--- /dev/null
+# CONFIG_6PACK is not set
+# CONFIG_8139CP is not set
+# CONFIG_9P_FS is not set
+# CONFIG_ACENIC is not set
+# CONFIG_ACORN_PARTITION is not set
+# CONFIG_ADAPTEC_STARFIRE is not set
+# CONFIG_ADFS_FS is not set
+# CONFIG_AFFS_FS is not set
+# CONFIG_AFS_FS is not set
+# CONFIG_AF_RXRPC is not set
+CONFIG_AIRO=m
+CONFIG_AIRO_CS=m
+# CONFIG_AMD8111_ETH is not set
+# CONFIG_AMIGA_PARTITION is not set
+CONFIG_ANON_INODES=y
+# CONFIG_APPLICOM is not set
+CONFIG_ARCH_FLATMEM_ENABLE=y
+# CONFIG_ARCNET is not set
+CONFIG_ARPD=y
+CONFIG_ASK_IP_FIB_HASH=y
+# CONFIG_ATA is not set
+# CONFIG_ATA_GENERIC is not set
+# CONFIG_ATALK is not set
+# CONFIG_ATARI_PARTITION is not set
+# CONFIG_ATA_OVER_ETH is not set
+# CONFIG_ATL1 is not set
+CONFIG_ATM=m
+CONFIG_ATMEL=m
+# CONFIG_ATM_AMBASSADOR is not set
+CONFIG_ATM_BR2684=m
+CONFIG_ATM_BR2684_IPFILTER=y
+CONFIG_ATM_CLIP=m
+CONFIG_ATM_CLIP_NO_ICMP=y
+# CONFIG_ATM_DRIVERS is not set
+CONFIG_ATM_DUMMY=m
+# CONFIG_ATM_ENI is not set
+# CONFIG_ATM_FIRESTREAM is not set
+# CONFIG_ATM_FORE200E_MAYBE is not set
+# CONFIG_ATM_HE is not set
+# CONFIG_ATM_HORIZON is not set
+# CONFIG_ATM_IA is not set
+# CONFIG_ATM_IDT77252 is not set
+# CONFIG_ATM_LANAI is not set
+CONFIG_ATM_LANE=m
+CONFIG_ATM_MPOA=m
+# CONFIG_ATM_NICSTAR is not set
+CONFIG_ATM_TCP=m
+# CONFIG_ATM_ZATM is not set
+# CONFIG_AUDIT is not set
+# CONFIG_AUTOFS4_FS is not set
+# CONFIG_AUTOFS_FS is not set
+CONFIG_AX25=m
+# CONFIG_AX25_DAMA_SLAVE is not set
+# CONFIG_AX88796 is not set
+# CONFIG_B44 is not set
+# CONFIG_BACKLIGHT_LCD_SUPPORT is not set
+CONFIG_BASE_FULL=y
+# CONFIG_BASLER_EXCITE is not set
+# CONFIG_BAYCOM_EPP is not set
+# CONFIG_BAYCOM_PAR is not set
+# CONFIG_BAYCOM_SER_FDX is not set
+# CONFIG_BAYCOM_SER_HDX is not set
+CONFIG_BCM43XX=m
+CONFIG_BCM43XX_DEBUG=y
+CONFIG_BCM43XX_DMA=y
+CONFIG_BCM43XX_DMA_AND_PIO_MODE=y
+# CONFIG_BCM43XX_DMA_MODE is not set
+CONFIG_BCM43XX_PIO=y
+# CONFIG_BCM43XX_PIO_MODE is not set
+# CONFIG_BEFS_FS is not set
+# CONFIG_BFS_FS is not set
+CONFIG_BINFMT_ELF=y
+# CONFIG_BINFMT_MISC is not set
+# CONFIG_BLINK is not set
+# CONFIG_BLK_CPQ_CISS_DA is not set
+# CONFIG_BLK_CPQ_DA is not set
+CONFIG_BLK_DEV=y
+# CONFIG_BLK_DEV_BSG is not set
+# CONFIG_BLK_DEV_3W_XXXX_RAID is not set
+# CONFIG_BLK_DEV_AEC62XX is not set
+# CONFIG_BLK_DEV_ALI15X3 is not set
+# CONFIG_BLK_DEV_AMD74XX is not set
+# CONFIG_BLK_DEV_ATIIXP is not set
+# CONFIG_BLK_DEV_CMD640 is not set
+# CONFIG_BLK_DEV_CMD64X is not set
+# CONFIG_BLK_DEV_COW_COMMON is not set
+CONFIG_BLK_DEV_CRYPTOLOOP=m
+# CONFIG_BLK_DEV_CS5520 is not set
+# CONFIG_BLK_DEV_CS5530 is not set
+# CONFIG_BLK_DEV_CS5535 is not set
+# CONFIG_BLK_DEV_CY82C693 is not set
+# CONFIG_BLK_DEV_DAC960 is not set
+# CONFIG_BLK_DEV_DELKIN is not set
+# CONFIG_BLK_DEV_FD is not set
+# CONFIG_BLK_DEV_IDECD is not set
+# CONFIG_BLK_DEV_IDEFLOPPY is not set
+# CONFIG_BLK_DEV_IDECS is not set
+# CONFIG_BLK_DEV_IDEPCI is not set
+# CONFIG_BLK_DEV_IDEPNP is not set
+# CONFIG_BLK_DEV_IDESCSI is not set
+# CONFIG_BLK_DEV_IDETAPE is not set
+# CONFIG_BLK_DEV_IDE_SATA is not set
+CONFIG_BLK_DEV_INITRD=y
+# CONFIG_BLK_DEV_IO_TRACE is not set
+# CONFIG_BLK_DEV_IT8213 is not set
+# CONFIG_BLK_DEV_IT821X is not set
+# CONFIG_BLK_DEV_JMICRON is not set
+CONFIG_BLK_DEV_LOOP=m
+CONFIG_BLK_DEV_NBD=m
+# CONFIG_BLK_DEV_NS87415 is not set
+# CONFIG_BLK_DEV_OFFBOARD is not set
+# CONFIG_BLK_DEV_OPTI621 is not set
+# CONFIG_BLK_DEV_PDC202XX_NEW is not set
+# CONFIG_BLK_DEV_PDC202XX_OLD is not set
+# CONFIG_BLK_DEV_PIIX is not set
+# CONFIG_BLK_DEV_RAM is not set
+# CONFIG_BLK_DEV_RZ1000 is not set
+CONFIG_BLK_DEV_SD=m
+# CONFIG_BLK_DEV_SIIMAGE is not set
+# CONFIG_BLK_DEV_SIS5513 is not set
+# CONFIG_BLK_DEV_SLC90E66 is not set
+# CONFIG_BLK_DEV_SR is not set
+# CONFIG_BLK_DEV_SVWKS is not set
+# CONFIG_BLK_DEV_SX8 is not set
+# CONFIG_BLK_DEV_TC86C001 is not set
+# CONFIG_BLK_DEV_TRIFLEX is not set
+# CONFIG_BLK_DEV_TRM290 is not set
+# CONFIG_BLK_DEV_UB is not set
+# CONFIG_BLK_DEV_UMEM is not set
+CONFIG_BLOCK=y
+# CONFIG_BNX2 is not set
+CONFIG_BONDING=m
+# CONFIG_BPQETHER is not set
+CONFIG_BRIDGE=y
+CONFIG_BRIDGE_EBT_802_3=m
+CONFIG_BRIDGE_EBT_AMONG=m
+CONFIG_BRIDGE_EBT_ARP=m
+CONFIG_BRIDGE_EBT_ARPREPLY=m
+CONFIG_BRIDGE_EBT_BROUTE=m
+CONFIG_BRIDGE_EBT_DNAT=m
+CONFIG_BRIDGE_EBT_IP=m
+CONFIG_BRIDGE_EBT_LIMIT=m
+CONFIG_BRIDGE_EBT_LOG=m
+CONFIG_BRIDGE_EBT_MARK=m
+CONFIG_BRIDGE_EBT_MARK_T=m
+CONFIG_BRIDGE_EBT_PKTTYPE=m
+CONFIG_BRIDGE_EBT_REDIRECT=m
+CONFIG_BRIDGE_EBT_SNAT=m
+CONFIG_BRIDGE_EBT_STP=m
+CONFIG_BRIDGE_EBT_T_FILTER=m
+CONFIG_BRIDGE_EBT_T_NAT=m
+CONFIG_BRIDGE_EBT_ULOG=m
+CONFIG_BRIDGE_EBT_VLAN=m
+# CONFIG_BRIDGE_NETFILTER is not set
+CONFIG_BRIDGE_NF_EBTABLES=m
+CONFIG_BROKEN_ON_SMP=y
+CONFIG_BSD_DISKLABEL=y
+CONFIG_BSD_PROCESS_ACCT=y
+# CONFIG_BSD_PROCESS_ACCT_V3 is not set
+CONFIG_BT=m
+CONFIG_BT_BNEP=m
+CONFIG_BT_BNEP_MC_FILTER=y
+CONFIG_BT_BNEP_PROTO_FILTER=y
+# CONFIG_BT_CMTP is not set
+CONFIG_BT_HCIBCM203X=m
+CONFIG_BT_HCIBFUSB=m
+# CONFIG_BT_HCIBLUECARD is not set
+CONFIG_BT_HCIBPA10X=m
+# CONFIG_BT_HCIBT3C is not set
+# CONFIG_BT_HCIBTUART is not set
+# CONFIG_BT_HCIDTL1 is not set
+CONFIG_BT_HCIUART=m
+CONFIG_BT_HCIUART_BCSP=y
+CONFIG_BT_HCIUART_H4=y
+CONFIG_BT_HCIUSB=m
+CONFIG_BT_HCIUSB_SCO=y
+CONFIG_BT_HCIVHCI=m
+CONFIG_BT_HIDP=m
+CONFIG_BT_L2CAP=m
+CONFIG_BT_RFCOMM=m
+CONFIG_BT_RFCOMM_TTY=y
+CONFIG_BT_SCO=m
+CONFIG_BUG=y
+# CONFIG_CAPI_AVM is not set
+# CONFIG_CAPI_EICON is not set
+# CONFIG_CAPI_TRACE is not set
+CONFIG_CARDBUS=y
+# CONFIG_CARDMAN_4000 is not set
+# CONFIG_CARDMAN_4040 is not set
+# CONFIG_CASSINI is not set
+CONFIG_CC_OPTIMIZE_FOR_SIZE=y
+# CONFIG_CDROM_PKTCDVD is not set
+CONFIG_CFG80211=m
+# CONFIG_CHELSIO_T1 is not set
+# CONFIG_CHELSIO_T3 is not set
+# CONFIG_CHR_DEV_OSST is not set
+# CONFIG_CHR_DEV_SCH is not set
+# CONFIG_CHR_DEV_SG is not set
+# CONFIG_CHR_DEV_ST is not set
+# CONFIG_CICADA_PHY is not set
+CONFIG_CIFS=m
+# CONFIG_CIFS_DEBUG2 is not set
+# CONFIG_CIFS_EXPERIMENTAL is not set
+CONFIG_CIFS_POSIX=y
+CONFIG_CIFS_STATS=y
+# CONFIG_CIFS_STATS2 is not set
+# CONFIG_CIFS_WEAK_PW_HASH is not set
+# CONFIG_CIFS_XATTR is not set
+CONFIG_CLS_U32_MARK=y
+CONFIG_CLS_U32_PERF=y
+CONFIG_CMDLINE=""
+# CONFIG_CODA_FS is not set
+CONFIG_CONFIGFS_FS=y
+# CONFIG_CONNECTOR is not set
+# CONFIG_CRAMFS is not set
+CONFIG_CRC16=m
+CONFIG_CRC32=y
+# CONFIG_CRC7 is not set
+CONFIG_CRC_CCITT=m
+CONFIG_CRC_ITU_T=m
+CONFIG_CROSSCOMPILE=y
+CONFIG_CRYPTO=y
+CONFIG_CRYPTO_AES=m
+CONFIG_CRYPTO_ALGAPI=m
+CONFIG_CRYPTO_ANUBIS=m
+CONFIG_CRYPTO_ARC4=m
+CONFIG_CRYPTO_BLKCIPHER=m
+CONFIG_CRYPTO_BLOWFISH=m
+CONFIG_CRYPTO_CAMELLIA=m
+CONFIG_CRYPTO_CAST5=m
+CONFIG_CRYPTO_CAST6=m
+CONFIG_CRYPTO_CBC=m
+CONFIG_CRYPTO_CRC32C=m
+# CONFIG_CRYPTO_CRYPTD is not set
+CONFIG_CRYPTO_DEFLATE=m
+CONFIG_CRYPTO_DES=m
+CONFIG_CRYPTO_ECB=m
+# CONFIG_CRYPTO_FCRYPT is not set
+# CONFIG_CRYPTO_GF128MUL is not set
+CONFIG_CRYPTO_HASH=m
+CONFIG_CRYPTO_HMAC=m
+CONFIG_CRYPTO_HW=n
+CONFIG_CRYPTO_KHAZAD=m
+# CONFIG_CRYPTO_LRW is not set
+CONFIG_CRYPTO_MANAGER=m
+CONFIG_CRYPTO_MD4=m
+CONFIG_CRYPTO_MD5=m
+CONFIG_CRYPTO_MICHAEL_MIC=m
+CONFIG_CRYPTO_NULL=m
+# CONFIG_CRYPTO_PCBC is not set
+CONFIG_CRYPTO_SERPENT=m
+CONFIG_CRYPTO_SHA1=m
+CONFIG_CRYPTO_SHA256=m
+CONFIG_CRYPTO_SHA512=m
+CONFIG_CRYPTO_TEA=m
+CONFIG_CRYPTO_TEST=m
+CONFIG_CRYPTO_TGR192=m
+CONFIG_CRYPTO_TWOFISH=m
+CONFIG_CRYPTO_TWOFISH_COMMON=m
+CONFIG_CRYPTO_WP512=m
+# CONFIG_CRYPTO_XCBC is not set
+# CONFIG_DAB is not set
+# CONFIG_DAVICOM_PHY is not set
+# CONFIG_DEBUG_FS is not set
+# CONFIG_DEBUG_KERNEL is not set
+# CONFIG_DECNET is not set
+# CONFIG_DEFAULT_AS is not set
+# CONFIG_DEFAULT_BIC is not set
+# CONFIG_DEFAULT_CFQ is not set
+# CONFIG_DEFAULT_CUBIC is not set
+CONFIG_DEFAULT_DEADLINE=y
+# CONFIG_DEFAULT_HTCP is not set
+CONFIG_DEFAULT_IOSCHED="deadline"
+# CONFIG_DEFAULT_NOOP is not set
+# CONFIG_DEFAULT_RENO is not set
+CONFIG_DEFAULT_TCP_CONG="vegas"
+CONFIG_DEFAULT_VEGAS=y
+# CONFIG_DEFAULT_WESTWOOD is not set
+CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config"
+# CONFIG_DEVFS_DEBUG is not set
+CONFIG_DEVFS_FS=y
+CONFIG_DEVFS_MOUNT=y
+# CONFIG_DGRS is not set
+# CONFIG_DISCONTIGMEM_MANUAL is not set
+# CONFIG_DISPLAY_SUPPORT is not set
+# CONFIG_DL2K is not set
+# CONFIG_DLM is not set
+# CONFIG_DMA_ENGINE is not set
+# CONFIG_DNOTIFY is not set
+# CONFIG_DRM is not set
+# CONFIG_DTLK is not set
+# CONFIG_DUMMY is not set
+# CONFIG_DVB is not set
+# CONFIG_DVB_CORE is not set
+CONFIG_E100=m
+# CONFIG_E1000 is not set
+# CONFIG_ECONET is not set
+# CONFIG_EEPRO100 is not set
+CONFIG_EEPROM_93CX6=m
+# CONFIG_EFI_PARTITION is not set
+# CONFIG_EFS_FS is not set
+# CONFIG_ELF_CORE is not set
+CONFIG_EMBEDDED=y
+# CONFIG_ENABLE_MUST_CHECK is not set
+# CONFIG_EPIC100 is not set
+CONFIG_EPOLL=y
+# CONFIG_EQUALIZER is not set
+CONFIG_EVENTFD=y
+CONFIG_EXPERIMENTAL=y
+CONFIG_EXPORTFS=m
+CONFIG_EXT2_FS=m
+# CONFIG_EXT2_FS_XATTR is not set
+# CONFIG_EXT2_FS_XIP is not set
+CONFIG_EXT3_FS=m
+# CONFIG_EXT3_FS_XATTR is not set
+# CONFIG_EXT4DEV_FS is not set
+CONFIG_FAT_DEFAULT_CODEPAGE=437
+CONFIG_FAT_DEFAULT_IOCHARSET="iso8859-1"
+CONFIG_FAT_FS=m
+# CONFIG_FB is not set
+# CONFIG_FB_IBM_GXT4500 is not set
+# CONFIG_FDDI is not set
+# CONFIG_FEALNX is not set
+CONFIG_FIB_RULES=y
+# CONFIG_FIREWIRE is not set
+CONFIG_FLATMEM=y
+CONFIG_FLATMEM_MANUAL=y
+CONFIG_FLAT_NODE_MEM_MAP=y
+# CONFIG_FORCEDETH is not set
+# CONFIG_FS_POSIX_ACL is not set
+# CONFIG_FTL is not set
+# CONFIG_FUSE_FS is not set
+# CONFIG_FUSION is not set
+# CONFIG_FUSION_FC is not set
+# CONFIG_FUSION_SAS is not set
+# CONFIG_FUSION_SPI is not set
+CONFIG_FUTEX=y
+CONFIG_FW_LOADER=y
+CONFIG_GACT_PROB=y
+# CONFIG_GAMEPORT is not set
+CONFIG_GENERIC_CALIBRATE_DELAY=y
+CONFIG_GENERIC_HARDIRQS=y
+CONFIG_GENERIC_HWEIGHT=y
+CONFIG_GENERIC_IRQ_PROBE=y
+CONFIG_GENERIC_TIME=y
+# CONFIG_GFS2_FS is not set
+# CONFIG_HAMACHI is not set
+CONFIG_HAMRADIO=y
+# CONFIG_HAPPYMEAL is not set
+# CONFIG_HEADERS_CHECK is not set
+CONFIG_HERMES=m
+CONFIG_HFSPLUS_FS=m
+CONFIG_HFS_FS=m
+# CONFIG_HID is not set
+# CONFIG_HID_DEBUG is not set
+# CONFIG_HID_FF is not set
+CONFIG_HIGH_RES_TIMERS=y
+# CONFIG_HIPPI is not set
+CONFIG_HOSTAP=m
+CONFIG_HOSTAP_CS=m
+CONFIG_HOSTAP_FIRMWARE=y
+CONFIG_HOSTAP_FIRMWARE_NVRAM=y
+CONFIG_HOSTAP_PCI=m
+CONFIG_HOSTAP_PLX=m
+CONFIG_HOTPLUG=y
+# CONFIG_HOTPLUG_CPU is not set
+# CONFIG_HOTPLUG_PCI is not set
+# CONFIG_HP100 is not set
+# CONFIG_HPFS_FS is not set
+# CONFIG_HUGETLB_PAGE is not set
+# CONFIG_HWMON is not set
+# CONFIG_HWMON_VID is not set
+CONFIG_HZ=100
+CONFIG_HZ_100=y
+# CONFIG_HZ_1000 is not set
+# CONFIG_HZ_1024 is not set
+# CONFIG_HZ_128 is not set
+# CONFIG_HZ_250 is not set
+# CONFIG_HZ_256 is not set
+# CONFIG_HZ_300 is not set
+# CONFIG_HZ_48 is not set
+# CONFIG_I2C_ALGOPCA is not set
+# CONFIG_I2C_ALGOPCF is not set
+# CONFIG_I2C_ALI1535 is not set
+# CONFIG_I2C_ALI1563 is not set
+# CONFIG_I2C_ALI15X3 is not set
+# CONFIG_I2C_AMD756 is not set
+# CONFIG_I2C_AMD8111 is not set
+# CONFIG_I2C_CHARDEV is not set
+# CONFIG_I2C_DEBUG_ALGO is not set
+# CONFIG_I2C_DEBUG_BUS is not set
+# CONFIG_I2C_DEBUG_CHIP is not set
+# CONFIG_I2C_DEBUG_CORE is not set
+# CONFIG_I2C_ELEKTOR is not set
+# CONFIG_I2C_GPIO is not set
+# CONFIG_I2C_I801 is not set
+# CONFIG_I2C_I810 is not set
+# CONFIG_I2C_NFORCE2 is not set
+# CONFIG_I2C_OCORES is not set
+# CONFIG_I2C_PARPORT_LIGHT is not set
+# CONFIG_I2C_PCA_ISA is not set
+# CONFIG_I2C_PIIX4 is not set
+# CONFIG_I2C_PROSAVAGE is not set
+# CONFIG_I2C_SAVAGE4 is not set
+# CONFIG_I2C_SIMTEC is not set
+# CONFIG_I2C_SIS5595 is not set
+# CONFIG_I2C_SIS630 is not set
+# CONFIG_I2C_SIS96X is not set
+# CONFIG_I2C_STUB is not set
+# CONFIG_I2C_TINY_USB is not set
+# CONFIG_I2C_VIA is not set
+# CONFIG_I2C_VIAPRO is not set
+# CONFIG_I2C_VOODOO3 is not set
+# CONFIG_I2O is not set
+# CONFIG_I82092 is not set
+# CONFIG_ICPLUS_PHY is not set
+CONFIG_IDE_MAX_HWIFS=4
+# CONFIG_IDEDISK_MULTI_MODE is not set
+# CONFIG_IDE_TASK_IOCTL is not set
+CONFIG_IDE_PROC_FS=y
+# CONFIG_IEEE1394 is not set
+CONFIG_IEEE80211=m
+CONFIG_IEEE80211_CRYPT_CCMP=m
+CONFIG_IEEE80211_CRYPT_TKIP=m
+CONFIG_IEEE80211_CRYPT_WEP=m
+# CONFIG_IEEE80211_DEBUG is not set
+CONFIG_IEEE80211_SOFTMAC=m
+# CONFIG_IEEE80211_SOFTMAC_DEBUG is not set
+CONFIG_IFB=m
+CONFIG_IKCONFIG=y
+CONFIG_IKCONFIG_PROC=y
+CONFIG_IMQ=m
+# CONFIG_IMQ_BEHAVIOR_AA is not set
+# CONFIG_IMQ_BEHAVIOR_AB is not set
+CONFIG_IMQ_BEHAVIOR_BA=y
+# CONFIG_IMQ_BEHAVIOR_BB is not set
+CONFIG_IMQ_NUM_DEVS=2
+CONFIG_INET=y
+CONFIG_INET6_AH=m
+CONFIG_INET6_ESP=m
+CONFIG_INET6_IPCOMP=m
+CONFIG_INET6_TUNNEL=m
+CONFIG_INET6_XFRM_MODE_BEET=m
+# CONFIG_INET6_XFRM_MODE_ROUTEOPTIMIZATION is not set
+CONFIG_INET6_XFRM_MODE_TRANSPORT=m
+CONFIG_INET6_XFRM_MODE_TUNNEL=m
+CONFIG_INET6_XFRM_TUNNEL=m
+CONFIG_INET_AH=m
+CONFIG_INET_DIAG=m
+CONFIG_INET_ESP=m
+CONFIG_INET_IPCOMP=m
+CONFIG_INET_TCP_DIAG=m
+CONFIG_INET_TUNNEL=m
+CONFIG_INET_XFRM_MODE_BEET=m
+CONFIG_INET_XFRM_MODE_TRANSPORT=m
+CONFIG_INET_XFRM_MODE_TUNNEL=m
+CONFIG_INET_XFRM_TUNNEL=m
+# CONFIG_INFINIBAND is not set
+# CONFIG_INFTL is not set
+CONFIG_INIT_ENV_ARG_LIMIT=32
+# CONFIG_INOTIFY is not set
+# CONFIG_INOTIFY_USER is not set
+# CONFIG_INPUT is not set
+# CONFIG_INPUT_ATI_REMOTE is not set
+# CONFIG_INPUT_ATI_REMOTE2 is not set
+# CONFIG_INPUT_EVBUG is not set
+CONFIG_INPUT_EVDEV=m
+# CONFIG_INPUT_FF_MEMLESS is not set
+# CONFIG_INPUT_JOYDEV is not set
+# CONFIG_INPUT_JOYSTICK is not set
+# CONFIG_INPUT_KEYBOARD is not set
+# CONFIG_INPUT_KEYSPAN_REMOTE is not set
+# CONFIG_INPUT_MISC is not set
+# CONFIG_INPUT_MOUSE is not set
+# CONFIG_INPUT_MOUSEDEV is not set
+# CONFIG_INPUT_PCSPKR is not set
+# CONFIG_INPUT_POLLDEV is not set
+# CONFIG_INPUT_POWERMATE is not set
+# CONFIG_INPUT_TABLET is not set
+# CONFIG_INPUT_TOUCHSCREEN is not set
+# CONFIG_INPUT_TSDEV is not set
+# CONFIG_INPUT_UINPUT is not set
+# CONFIG_INPUT_WISTRON_BTNS is not set
+# CONFIG_IOSCHED_AS is not set
+# CONFIG_IOSCHED_CFQ is not set
+CONFIG_IOSCHED_DEADLINE=y
+CONFIG_IOSCHED_NOOP=y
+CONFIG_IP6_NF_FILTER=m
+CONFIG_IP6_NF_IPTABLES=m
+CONFIG_IP6_NF_MANGLE=m
+CONFIG_IP6_NF_MATCH_AH=m
+CONFIG_IP6_NF_MATCH_EUI64=m
+CONFIG_IP6_NF_MATCH_FRAG=m
+CONFIG_IP6_NF_MATCH_HL=m
+CONFIG_IP6_NF_MATCH_IPV6HEADER=m
+CONFIG_IP6_NF_MATCH_LIMIT=m
+CONFIG_IP6_NF_MATCH_MH=m
+CONFIG_IP6_NF_MATCH_OPTS=m
+CONFIG_IP6_NF_MATCH_OWNER=m
+CONFIG_IP6_NF_MATCH_RT=m
+CONFIG_IP6_NF_QUEUE=m
+CONFIG_IP6_NF_RAW=m
+CONFIG_IP6_NF_TARGET_HL=m
+CONFIG_IP6_NF_TARGET_IMQ=m
+CONFIG_IP6_NF_TARGET_LOG=m
+CONFIG_IP6_NF_TARGET_REJECT=m
+CONFIG_IP6_NF_TARGET_ROUTE=m
+# CONFIG_IPC_NS is not set
+# CONFIG_IPMI_HANDLER is not set
+CONFIG_IPSEC_NAT_TRAVERSAL=y
+CONFIG_IPV6=m
+# CONFIG_IPV6_MIP6 is not set
+# CONFIG_IPV6_MULTIPLE_TABLES is not set
+# CONFIG_IPV6_OPTIMISTIC_DAD is not set
+# CONFIG_IPV6_PRIVACY is not set
+CONFIG_IPV6_ROUTER_PREF=y
+# CONFIG_IPV6_ROUTE_INFO is not set
+CONFIG_IPV6_SIT=m
+# CONFIG_IPV6_TUNNEL is not set
+CONFIG_IPW2100=m
+# CONFIG_IPW2100_DEBUG is not set
+CONFIG_IPW2100_MONITOR=y
+CONFIG_IPW2200=m
+# CONFIG_IPW2200_DEBUG is not set
+CONFIG_IPW2200_MONITOR=y
+# CONFIG_IPW2200_PROMISCUOUS is not set
+# CONFIG_IPW2200_QOS is not set
+# CONFIG_IPW2200_RADIOTAP is not set
+# CONFIG_IPX is not set
+CONFIG_IP_ADVANCED_ROUTER=y
+# CONFIG_IP_DCCP is not set
+CONFIG_IP_FIB_HASH=y
+# CONFIG_IP_FIB_TRIE is not set
+# CONFIG_IP_MROUTE is not set
+CONFIG_IP_MULTICAST=y
+CONFIG_IP_MULTIPLE_TABLES=y
+CONFIG_IP_NF_AMANDA=m
+CONFIG_IP_NF_ARPFILTER=m
+CONFIG_IP_NF_ARPTABLES=m
+CONFIG_IP_NF_ARP_MANGLE=m
+CONFIG_IP_NF_CONNTRACK=y
+# CONFIG_IP_NF_CONNTRACK_EVENTS is not set
+CONFIG_IP_NF_CONNTRACK_MARK=y
+CONFIG_IP_NF_CT_ACCT=y
+CONFIG_IP_NF_CT_PROTO_SCTP=m
+CONFIG_IP_NF_FILTER=y
+CONFIG_IP_NF_FTP=m
+CONFIG_IP_NF_H323=m
+CONFIG_IP_NF_IPTABLES=y
+CONFIG_IP_NF_IRC=m
+CONFIG_IP_NF_MANGLE=y
+CONFIG_IP_NF_MATCH_ADDRTYPE=m
+CONFIG_IP_NF_MATCH_AH=m
+CONFIG_IP_NF_MATCH_ECN=m
+CONFIG_IP_NF_MATCH_HASHLIMIT=m
+CONFIG_IP_NF_MATCH_IPP2P=m
+CONFIG_IP_NF_MATCH_IPRANGE=m
+CONFIG_IP_NF_MATCH_LAYER7=m
+# CONFIG_IP_NF_MATCH_LAYER7_DEBUG is not set
+CONFIG_IP_NF_MATCH_OWNER=m
+CONFIG_IP_NF_MATCH_RECENT=m
+CONFIG_IP_NF_MATCH_SET=m
+CONFIG_IP_NF_MATCH_TIME=m
+CONFIG_IP_NF_MATCH_TOS=m
+CONFIG_IP_NF_MATCH_TTL=m
+CONFIG_IP_NF_NAT=y
+CONFIG_IP_NF_NAT_AMANDA=m
+CONFIG_IP_NF_NAT_FTP=m
+CONFIG_IP_NF_NAT_H323=m
+CONFIG_IP_NF_NAT_IRC=m
+CONFIG_IP_NF_NAT_NEEDED=y
+CONFIG_IP_NF_NAT_PPTP=m
+CONFIG_IP_NF_NAT_SIP=m
+# CONFIG_IP_NF_NAT_SNMP_BASIC is not set
+CONFIG_IP_NF_NAT_TFTP=m
+# CONFIG_IP_NF_NETBIOS_NS is not set
+CONFIG_IP_NF_PPTP=m
+CONFIG_IP_NF_QUEUE=m
+CONFIG_IP_NF_RAW=m
+CONFIG_IP_NF_SET=m
+CONFIG_IP_NF_SET_HASHSIZE=1024
+CONFIG_IP_NF_SET_IPHASH=m
+CONFIG_IP_NF_SET_IPMAP=m
+CONFIG_IP_NF_SET_IPPORTHASH=m
+CONFIG_IP_NF_SET_IPTREE=m
+CONFIG_IP_NF_SET_MACIPMAP=m
+CONFIG_IP_NF_SET_MAX=256
+CONFIG_IP_NF_SET_NETHASH=m
+CONFIG_IP_NF_SET_PORTMAP=m
+CONFIG_IP_NF_SIP=m
+# CONFIG_IP_NF_TARGET_CLUSTERIP is not set
+CONFIG_IP_NF_TARGET_ECN=m
+CONFIG_IP_NF_TARGET_IMQ=m
+CONFIG_IP_NF_TARGET_LOG=m
+CONFIG_IP_NF_TARGET_MASQUERADE=y
+CONFIG_IP_NF_TARGET_NETMAP=m
+CONFIG_IP_NF_TARGET_REDIRECT=m
+CONFIG_IP_NF_TARGET_REJECT=y
+CONFIG_IP_NF_TARGET_ROUTE=m
+CONFIG_IP_NF_TARGET_SAME=m
+CONFIG_IP_NF_TARGET_SET=m
+CONFIG_IP_NF_TARGET_TOS=m
+CONFIG_IP_NF_TARGET_TTL=m
+CONFIG_IP_NF_TARGET_ULOG=m
+CONFIG_IP_NF_TFTP=m
+# CONFIG_IP_PNP is not set
+CONFIG_IP_ROUTE_FWMARK=y
+CONFIG_IP_ROUTE_MULTIPATH=y
+CONFIG_IP_ROUTE_MULTIPATH_CACHED=y
+CONFIG_IP_ROUTE_MULTIPATH_DRR=m
+CONFIG_IP_ROUTE_MULTIPATH_RANDOM=m
+CONFIG_IP_ROUTE_MULTIPATH_RR=m
+CONFIG_IP_ROUTE_MULTIPATH_WRANDOM=m
+CONFIG_IP_ROUTE_VERBOSE=y
+# CONFIG_IP_SCTP is not set
+# CONFIG_IP_VS is not set
+# CONFIG_IRDA is not set
+# CONFIG_ISCSI_TCP is not set
+CONFIG_ISDN=m
+CONFIG_ISDN_CAPI=m
+CONFIG_ISDN_CAPI_CAPI20=m
+CONFIG_ISDN_CAPI_CAPIFS=m
+CONFIG_ISDN_CAPI_CAPIFS_BOOL=y
+CONFIG_ISDN_CAPI_MIDDLEWARE=y
+# CONFIG_ISDN_DRV_AVMB1_VERBOSE_REASON is not set
+# CONFIG_ISDN_I4L is not set
+CONFIG_ISO9660_FS=m
+# CONFIG_IXGB is not set
+CONFIG_JBD=m
+# CONFIG_JBD_DEBUG is not set
+# CONFIG_JFFS2_CMODE_NONE is not set
+CONFIG_JFFS2_CMODE_PRIORITY=y
+# CONFIG_JFFS2_CMODE_SIZE is not set
+CONFIG_JFFS2_COMPRESSION_OPTIONS=y
+CONFIG_JFFS2_FS=y
+CONFIG_JFFS2_FS_DEBUG=0
+CONFIG_JFFS2_FS_WRITEBUFFER=y
+# CONFIG_JFFS2_FS_XATTR is not set
+CONFIG_JFFS2_RTIME=y
+# CONFIG_JFFS2_RUBIN is not set
+CONFIG_JFFS2_SUMMARY=y
+CONFIG_JFFS2_ZLIB=y
+# CONFIG_JFFS_FS is not set
+# CONFIG_JFS_DEBUG is not set
+# CONFIG_JFS_FS is not set
+# CONFIG_JFS_POSIX_ACL is not set
+# CONFIG_JFS_SECURITY is not set
+# CONFIG_JFS_STATISTICS is not set
+CONFIG_JOLIET=y
+# CONFIG_KALLSYMS is not set
+# CONFIG_KARMA_PARTITION is not set
+# CONFIG_KEXEC is not set
+# CONFIG_KEYS is not set
+# CONFIG_KMOD is not set
+# CONFIG_LAPB is not set
+# CONFIG_LASAT is not set
+# CONFIG_LBD is not set
+# CONFIG_LDM_PARTITION is not set
+CONFIG_LEDS_CLASS=y
+CONFIG_LEDS_TRIGGERS=y
+CONFIG_LEDS_TRIGGER_HEARTBEAT=y
+CONFIG_LEDS_TRIGGER_TIMER=y
+# CONFIG_LEDS_TRIGGER_IDE_DISK is not set
+# CONFIG_LEDS_TRIGGER_MORSE is not set
+# CONFIG_LEGACY_PTYS is not set
+CONFIG_LIBCRC32C=m
+# CONFIG_LIBERTAS is not set
+# CONFIG_LIBERTAS_USB is not set
+CONFIG_LLC=y
+CONFIG_LLC2=m
+CONFIG_LOCALVERSION=""
+CONFIG_LOCALVERSION_AUTO=y
+CONFIG_LOCKD=m
+CONFIG_LOCKDEP_SUPPORT=y
+CONFIG_LOCKD_V4=y
+CONFIG_LOG_BUF_SHIFT=14
+# CONFIG_LSF is not set
+# CONFIG_LXT_PHY is not set
+CONFIG_MAC80211=m
+# CONFIG_MAC80211_DEBUG is not set
+CONFIG_MAC80211_LEDS=y
+# CONFIG_MAC_EMUMOUSEBTN is not set
+CONFIG_MAC_PARTITION=y
+# CONFIG_MACVLAN is not set
+# CONFIG_MAGIC_SYSRQ is not set
+# CONFIG_MARKEINS is not set
+# CONFIG_MARVELL_PHY is not set
+# CONFIG_MD is not set
+# CONFIG_MEGARAID_LEGACY is not set
+# CONFIG_MEGARAID_NEWGEN is not set
+# CONFIG_MEGARAID_SAS is not set
+# CONFIG_MFD_SM501 is not set
+CONFIG_MII=y
+CONFIG_MINIX_FS=m
+# CONFIG_MINIX_SUBPARTITION is not set
+CONFIG_MINI_FO=y
+CONFIG_MISC_DEVICES=y
+CONFIG_MKISS=m
+# CONFIG_MMC is not set
+CONFIG_MMU=y
+CONFIG_MODULES=y
+# CONFIG_MODULE_FORCE_UNLOAD is not set
+# CONFIG_MODULE_SRCVERSION_ALL is not set
+CONFIG_MODULE_UNLOAD=y
+# CONFIG_MODVERSIONS is not set
+CONFIG_MSDOS_FS=m
+CONFIG_MSDOS_PARTITION=y
+# CONFIG_MTD_NAND is not set
+CONFIG_MTD_ROOTFS_ROOT_DEV=y
+CONFIG_MTD_ROOTFS_SPLIT=y
+# CONFIG_MTD_UBI is not set
+# CONFIG_MYRI10GE is not set
+# CONFIG_NCP_FS is not set
+CONFIG_NET=y
+# CONFIG_NETCONSOLE is not set
+# CONFIG_NETDEBUG is not set
+CONFIG_NETDEVICES=y
+# CONFIG_NETDEV_10000 is not set
+# CONFIG_NETDEVICES_MULTIQUEUE is not set
+CONFIG_NETFILTER=y
+# CONFIG_NETFILTER_DEBUG is not set
+# CONFIG_NETFILTER_NETLINK is not set
+CONFIG_NETFILTER_XTABLES=y
+CONFIG_NETFILTER_XT_MATCH_COMMENT=m
+CONFIG_NETFILTER_XT_MATCH_CONNBYTES=m
+CONFIG_NETFILTER_XT_MATCH_CONNLIMIT=m
+CONFIG_NETFILTER_XT_MATCH_CONNMARK=m
+CONFIG_NETFILTER_XT_MATCH_CONNTRACK=m
+CONFIG_NETFILTER_XT_MATCH_DCCP=m
+CONFIG_NETFILTER_XT_MATCH_DSCP=m
+CONFIG_NETFILTER_XT_MATCH_ESP=m
+CONFIG_NETFILTER_XT_MATCH_HASHLIMIT=m
+CONFIG_NETFILTER_XT_MATCH_HELPER=m
+CONFIG_NETFILTER_XT_MATCH_LENGTH=m
+CONFIG_NETFILTER_XT_MATCH_LIMIT=y
+CONFIG_NETFILTER_XT_MATCH_MAC=m
+CONFIG_NETFILTER_XT_MATCH_MARK=m
+CONFIG_NETFILTER_XT_MATCH_MULTIPORT=y
+CONFIG_NETFILTER_XT_MATCH_PHYSDEV=m
+CONFIG_NETFILTER_XT_MATCH_PKTTYPE=m
+CONFIG_NETFILTER_XT_MATCH_POLICY=m
+CONFIG_NETFILTER_XT_MATCH_PORTSCAN=m
+# CONFIG_NETFILTER_XT_MATCH_QUOTA is not set
+CONFIG_NETFILTER_XT_MATCH_REALM=m
+CONFIG_NETFILTER_XT_MATCH_SCTP=m
+CONFIG_NETFILTER_XT_MATCH_STATE=y
+# CONFIG_NETFILTER_XT_MATCH_STATISTIC is not set
+CONFIG_NETFILTER_XT_MATCH_U32=m
+CONFIG_NETFILTER_XT_MATCH_STRING=m
+CONFIG_NETFILTER_XT_MATCH_TCPMSS=m
+CONFIG_NETFILTER_XT_TARGET_CHAOS=m
+CONFIG_NETFILTER_XT_TARGET_CLASSIFY=m
+CONFIG_NETFILTER_XT_TARGET_CONNMARK=m
+CONFIG_NETFILTER_XT_TARGET_DELUDE=m
+CONFIG_NETFILTER_XT_TARGET_DSCP=m
+CONFIG_NETFILTER_XT_TARGET_MARK=m
+CONFIG_NETFILTER_XT_TARGET_NFLOG=m
+CONFIG_NETFILTER_XT_TARGET_NFQUEUE=m
+CONFIG_NETFILTER_XT_TARGET_NOTRACK=m
+CONFIG_NETFILTER_XT_TARGET_TCPMSS=y
+CONFIG_NETFILTER_XT_TARGET_TRACE=m
+# CONFIG_NETPOLL is not set
+# CONFIG_NETROM is not set
+# CONFIG_NETWORK_SECMARK is not set
+# CONFIG_NETXEN_NIC is not set
+# CONFIG_NET_9P is not set
+CONFIG_NET_ACT_GACT=m
+CONFIG_NET_ACT_IPT=m
+CONFIG_NET_ACT_MIRRED=m
+CONFIG_NET_ACT_PEDIT=m
+CONFIG_NET_ACT_POLICE=m
+# CONFIG_NET_ACT_SIMP is not set
+CONFIG_NET_CLS=y
+CONFIG_NET_CLS_ACT=y
+CONFIG_NET_CLS_BASIC=m
+CONFIG_NET_CLS_FW=m
+CONFIG_NET_CLS_IND=y
+CONFIG_NET_CLS_POLICE=y
+CONFIG_NET_CLS_ROUTE=y
+CONFIG_NET_CLS_ROUTE4=m
+CONFIG_NET_CLS_RSVP=m
+CONFIG_NET_CLS_RSVP6=m
+CONFIG_NET_CLS_TCINDEX=m
+CONFIG_NET_CLS_U32=m
+CONFIG_NET_EMATCH=y
+CONFIG_NET_EMATCH_CMP=m
+CONFIG_NET_EMATCH_META=m
+CONFIG_NET_EMATCH_NBYTE=m
+CONFIG_NET_EMATCH_STACK=32
+CONFIG_NET_EMATCH_TEXT=m
+CONFIG_NET_EMATCH_U32=m
+CONFIG_NET_ESTIMATOR=y
+CONFIG_NET_ETHERNET=y
+# CONFIG_NET_FC is not set
+CONFIG_NET_IPGRE=m
+CONFIG_NET_IPGRE_BROADCAST=y
+CONFIG_NET_IPIP=m
+CONFIG_NET_KEY=m
+# CONFIG_NET_KEY_MIGRATE is not set
+CONFIG_NET_PCI=y
+# CONFIG_NET_PCMCIA is not set
+CONFIG_NET_PKTGEN=m
+# CONFIG_NET_POLL_CONTROLLER is not set
+CONFIG_NET_RADIO=y
+CONFIG_NET_SCHED=y
+CONFIG_NET_SCH_ATM=m
+CONFIG_NET_SCH_CBQ=m
+# CONFIG_NET_SCH_CLK_CPU is not set
+# CONFIG_NET_SCH_CLK_GETTIMEOFDAY is not set
+CONFIG_NET_SCH_CLK_JIFFIES=y
+CONFIG_NET_SCH_DSMARK=m
+CONFIG_NET_SCH_ESFQ=m
+CONFIG_NET_SCH_GRED=m
+CONFIG_NET_SCH_HFSC=m
+CONFIG_NET_SCH_HTB=m
+CONFIG_NET_SCH_INGRESS=m
+CONFIG_NET_SCH_NETEM=m
+CONFIG_NET_SCH_PRIO=m
+CONFIG_NET_SCH_RED=m
+CONFIG_NET_SCH_RR=m
+CONFIG_NET_SCH_SFQ=m
+CONFIG_NET_SCH_TBF=m
+CONFIG_NET_SCH_TEQL=m
+# CONFIG_NET_TULIP is not set
+CONFIG_NET_WIRELESS=y
+CONFIG_NET_WIRELESS_RTNETLINK=y
+CONFIG_NEW_LEDS=y
+CONFIG_NFSD=m
+CONFIG_NFSD_TCP=y
+# CONFIG_NFSD_V2_ACL is not set
+CONFIG_NFSD_V3=y
+# CONFIG_NFSD_V3_ACL is not set
+CONFIG_NFSD_V4=y
+# CONFIG_NFS_ACL_SUPPORT is not set
+CONFIG_NFS_COMMON=y
+# CONFIG_NFS_DIRECTIO is not set
+CONFIG_NFS_FS=m
+CONFIG_NFS_V3=y
+# CONFIG_NFS_V3_ACL is not set
+CONFIG_NFS_V4=y
+# CONFIG_NFTL is not set
+CONFIG_NF_CONNTRACK=y
+CONFIG_NF_CONNTRACK_AMANDA=m
+CONFIG_NF_CONNTRACK_ENABLED=y
+# CONFIG_NF_CONNTRACK_EVENTS is not set
+CONFIG_NF_CONNTRACK_FTP=m
+CONFIG_NF_CONNTRACK_H323=m
+CONFIG_NF_CONNTRACK_IPV4=y
+CONFIG_NF_CONNTRACK_IPV6=m
+CONFIG_NF_CONNTRACK_IRC=m
+CONFIG_NF_CONNTRACK_MARK=y
+# CONFIG_NF_CONNTRACK_NETBIOS_NS is not set
+CONFIG_NF_CONNTRACK_PPTP=m
+CONFIG_NF_CONNTRACK_PROC_COMPAT=y
+CONFIG_NF_CONNTRACK_RTSP=m
+# CONFIG_NF_CONNTRACK_SANE is not set
+CONFIG_NF_CONNTRACK_SIP=m
+CONFIG_NF_CONNTRACK_SUPPORT=y
+CONFIG_NF_CONNTRACK_TFTP=m
+CONFIG_NF_CT_ACCT=y
+# CONFIG_NF_CT_PROTO_SCTP is not set
+# CONFIG_NF_CT_PROTO_UDPLITE is not set
+CONFIG_NF_NAT=y
+CONFIG_NF_NAT_AMANDA=m
+CONFIG_NF_NAT_FTP=m
+CONFIG_NF_NAT_H323=m
+CONFIG_NF_NAT_IRC=m
+CONFIG_NF_NAT_NEEDED=y
+CONFIG_NF_NAT_PPTP=m
+CONFIG_NF_NAT_RTSP=m
+CONFIG_NF_NAT_SIP=m
+CONFIG_NF_NAT_SNMP_BASIC=m
+CONFIG_NF_NAT_TFTP=m
+CONFIG_NLS=m
+# CONFIG_NLS_ASCII is not set
+CONFIG_NLS_CODEPAGE_1250=m
+# CONFIG_NLS_CODEPAGE_1251 is not set
+CONFIG_NLS_CODEPAGE_437=m
+# CONFIG_NLS_CODEPAGE_737 is not set
+# CONFIG_NLS_CODEPAGE_775 is not set
+CONFIG_NLS_CODEPAGE_850=m
+# CONFIG_NLS_CODEPAGE_852 is not set
+# CONFIG_NLS_CODEPAGE_855 is not set
+# CONFIG_NLS_CODEPAGE_857 is not set
+# CONFIG_NLS_CODEPAGE_860 is not set
+# CONFIG_NLS_CODEPAGE_861 is not set
+# CONFIG_NLS_CODEPAGE_862 is not set
+# CONFIG_NLS_CODEPAGE_863 is not set
+# CONFIG_NLS_CODEPAGE_864 is not set
+# CONFIG_NLS_CODEPAGE_865 is not set
+# CONFIG_NLS_CODEPAGE_866 is not set
+# CONFIG_NLS_CODEPAGE_869 is not set
+# CONFIG_NLS_CODEPAGE_874 is not set
+# CONFIG_NLS_CODEPAGE_932 is not set
+# CONFIG_NLS_CODEPAGE_936 is not set
+# CONFIG_NLS_CODEPAGE_949 is not set
+# CONFIG_NLS_CODEPAGE_950 is not set
+CONFIG_NLS_DEFAULT="iso8859-1"
+CONFIG_NLS_ISO8859_1=m
+# CONFIG_NLS_ISO8859_13 is not set
+# CONFIG_NLS_ISO8859_14 is not set
+CONFIG_NLS_ISO8859_15=m
+# CONFIG_NLS_ISO8859_2 is not set
+# CONFIG_NLS_ISO8859_3 is not set
+# CONFIG_NLS_ISO8859_4 is not set
+# CONFIG_NLS_ISO8859_5 is not set
+# CONFIG_NLS_ISO8859_6 is not set
+# CONFIG_NLS_ISO8859_7 is not set
+# CONFIG_NLS_ISO8859_8 is not set
+# CONFIG_NLS_ISO8859_9 is not set
+CONFIG_NLS_KOI8_R=m
+# CONFIG_NLS_KOI8_U is not set
+CONFIG_NLS_UTF8=m
+CONFIG_NORTEL_HERMES=m
+CONFIG_NO_HZ=y
+# CONFIG_NS83820 is not set
+# CONFIG_NTFS_DEBUG is not set
+# CONFIG_NTFS_FS is not set
+# CONFIG_NTFS_RW is not set
+# CONFIG_OCFS2_FS is not set
+# CONFIG_OSF_PARTITION is not set
+CONFIG_PACKET=y
+CONFIG_PACKET_MMAP=y
+# CONFIG_PARPORT is not set
+# CONFIG_PARPORT_PC is not set
+CONFIG_PARTITION_ADVANCED=y
+# CONFIG_PATA_ALI is not set
+# CONFIG_PATA_AMD is not set
+# CONFIG_PATA_ARTOP is not set
+# CONFIG_PATA_ATIIXP is not set
+# CONFIG_PATA_CMD640_PCI is not set
+# CONFIG_PATA_CMD64X is not set
+# CONFIG_PATA_CS5520 is not set
+# CONFIG_PATA_CS5530 is not set
+# CONFIG_PATA_CS5535 is not set
+# CONFIG_PATA_CYPRESS is not set
+# CONFIG_PATA_EFAR is not set
+# CONFIG_PATA_HPT366 is not set
+# CONFIG_PATA_HPT37X is not set
+# CONFIG_PATA_HPT3X2N is not set
+# CONFIG_PATA_HPT3X3 is not set
+# CONFIG_PATA_ISAPNP is not set
+# CONFIG_PATA_IT8213 is not set
+# CONFIG_PATA_IT821X is not set
+# CONFIG_PATA_JMICRON is not set
+# CONFIG_PATA_LEGACY is not set
+# CONFIG_PATA_MARVELL is not set
+# CONFIG_PATA_MPIIX is not set
+# CONFIG_PATA_NETCELL is not set
+# CONFIG_PATA_NS87410 is not set
+# CONFIG_PATA_OLDPIIX is not set
+# CONFIG_PATA_OPTI is not set
+# CONFIG_PATA_OPTIDMA is not set
+# CONFIG_PATA_PCMCIA is not set
+# CONFIG_PATA_PDC2027X is not set
+# CONFIG_PATA_PDC_OLD is not set
+CONFIG_PATA_PLATFORM=m
+# CONFIG_PATA_QDI is not set
+# CONFIG_PATA_RADISYS is not set
+# CONFIG_PATA_RZ1000 is not set
+# CONFIG_PATA_SC1200 is not set
+# CONFIG_PATA_SERVERWORKS is not set
+# CONFIG_PATA_SIL680 is not set
+# CONFIG_PATA_SIS is not set
+# CONFIG_PATA_TRIFLEX is not set
+# CONFIG_PATA_VIA is not set
+# CONFIG_PATA_WINBOND is not set
+# CONFIG_PATA_WINBOND_VLB is not set
+# CONFIG_PC300TOO is not set
+# CONFIG_PCCARD is not set
+CONFIG_PCI=y
+# CONFIG_PCI_ATMEL is not set
+CONFIG_PCI_HERMES=m
+# CONFIG_PCMCIA is not set
+# CONFIG_PCMCIA_AHA152X is not set
+# CONFIG_PCMCIA_ATMEL is not set
+# CONFIG_PCMCIA_DEBUG is not set
+# CONFIG_PCMCIA_FDOMAIN is not set
+# CONFIG_PCMCIA_HERMES is not set
+# CONFIG_PCMCIA_IOCTL is not set
+# CONFIG_PCMCIA_LOAD_CIS is not set
+# CONFIG_PCMCIA_NETWAVE is not set
+# CONFIG_PCMCIA_NINJA_SCSI is not set
+# CONFIG_PCMCIA_QLOGIC is not set
+# CONFIG_PCMCIA_RAYCS is not set
+# CONFIG_PCMCIA_SPECTRUM is not set
+# CONFIG_PCMCIA_SYM53C500 is not set
+# CONFIG_PCMCIA_WAVELAN is not set
+# CONFIG_PCMCIA_WL3501 is not set
+# CONFIG_PCNET32 is not set
+# CONFIG_PD6729 is not set
+# CONFIG_PHANTOM is not set
+# CONFIG_PHONE is not set
+# CONFIG_PHYLIB is not set
+CONFIG_PLIST=y
+CONFIG_PLX_HERMES=m
+# CONFIG_PM is not set
+# CONFIG_POSIX_MQUEUE is not set
+# CONFIG_POWER_SUPPLY is not set
+CONFIG_PPP=m
+CONFIG_PPPOATM=m
+CONFIG_PPPOE=m
+CONFIG_PPPOL2TP=m
+CONFIG_PPP_ASYNC=m
+CONFIG_PPP_BSDCOMP=m
+CONFIG_PPP_DEFLATE=m
+CONFIG_PPP_FILTER=y
+CONFIG_PPP_MPPE=m
+CONFIG_PPP_MULTILINK=y
+CONFIG_PPP_SYNC_TTY=m
+# CONFIG_PREEMPT is not set
+CONFIG_PREEMPT_NONE=y
+# CONFIG_PREEMPT_VOLUNTARY is not set
+CONFIG_PREVENT_FIRMWARE_BUILD=y
+CONFIG_PRINTK=y
+# CONFIG_PRINTK_TIME is not set
+CONFIG_PRISM54=m
+CONFIG_PROC_FS=y
+CONFIG_PROC_KCORE=y
+CONFIG_PROC_SYSCTL=y
+# CONFIG_PROFILING is not set
+# CONFIG_QEMU is not set
+# CONFIG_QLA3XXX is not set
+# CONFIG_QNX4FS_FS is not set
+# CONFIG_QUOTA is not set
+# CONFIG_R3964 is not set
+# CONFIG_R8169 is not set
+# CONFIG_RADIO_ADAPTERS is not set
+# CONFIG_RADIO_AZTECH is not set
+# CONFIG_RADIO_CADET is not set
+# CONFIG_RADIO_GEMTEK is not set
+# CONFIG_RADIO_GEMTEK_PCI is not set
+# CONFIG_RADIO_MAESTRO is not set
+# CONFIG_RADIO_MAXIRADIO is not set
+# CONFIG_RADIO_RTRACK is not set
+# CONFIG_RADIO_RTRACK2 is not set
+# CONFIG_RADIO_SF16FMI is not set
+# CONFIG_RADIO_SF16FMR2 is not set
+# CONFIG_RADIO_TERRATEC is not set
+# CONFIG_RADIO_TRUST is not set
+# CONFIG_RADIO_TYPHOON is not set
+# CONFIG_RADIO_ZOLTRIX is not set
+# CONFIG_RAID_ATTRS is not set
+CONFIG_RAMFS=y
+# CONFIG_RAW_DRIVER is not set
+# CONFIG_REISERFS_CHECK is not set
+# CONFIG_REISERFS_FS is not set
+# CONFIG_REISERFS_FS_XATTR is not set
+# CONFIG_REISERFS_PROC_INFO is not set
+# CONFIG_RELAY is not set
+# CONFIG_RESOURCES_64BIT is not set
+# CONFIG_RFD_FTL is not set
+# CONFIG_RFKILL is not set
+# CONFIG_ROMFS_FS is not set
+# CONFIG_ROSE is not set
+CONFIG_RPCSEC_GSS_KRB5=m
+# CONFIG_RPCSEC_GSS_SPKM3 is not set
+# CONFIG_RTC_CLASS is not set
+CONFIG_RTC_DRV_CMOS=y
+# CONFIG_RTC_DRV_MAX6900 is not set
+CONFIG_RT_MUTEXES=y
+# CONFIG_S2IO is not set
+# CONFIG_SATA_AHCI is not set
+# CONFIG_PDC_ADMA is not set
+# CONFIG_SATA_INIC162X is not set
+# CONFIG_SATA_MV is not set
+# CONFIG_SATA_NV is not set
+# CONFIG_SATA_PROMISE is not set
+# CONFIG_SATA_QSTOR is not set
+# CONFIG_SATA_SIL is not set
+# CONFIG_SATA_SIL24 is not set
+# CONFIG_SATA_SIS is not set
+# CONFIG_SATA_SVW is not set
+# CONFIG_SATA_SX4 is not set
+# CONFIG_SATA_ULI is not set
+# CONFIG_SATA_VIA is not set
+# CONFIG_SATA_VITESSE is not set
+# CONFIG_SC92031 is not set
+CONFIG_SCSI=m
+# CONFIG_SCSI_3W_9XXX is not set
+# CONFIG_SCSI_7000FASST is not set
+# CONFIG_SCSI_AACRAID is not set
+# CONFIG_SCSI_ACARD is not set
+# CONFIG_SCSI_ADVANSYS is not set
+# CONFIG_SCSI_AHA152X is not set
+# CONFIG_SCSI_AHA1542 is not set
+# CONFIG_SCSI_AIC79XX is not set
+# CONFIG_SCSI_AIC7XXX is not set
+# CONFIG_SCSI_AIC7XXX_OLD is not set
+# CONFIG_SCSI_AIC94XX is not set
+# CONFIG_SCSI_ARCMSR is not set
+# CONFIG_SCSI_BUSLOGIC is not set
+# CONFIG_SCSI_CONSTANTS is not set
+# CONFIG_SCSI_DC390T is not set
+# CONFIG_SCSI_DC395x is not set
+# CONFIG_SCSI_DEBUG is not set
+CONFIG_SCSI_DMA=y
+# CONFIG_SCSI_DMX3191D is not set
+# CONFIG_SCSI_DPT_I2O is not set
+# CONFIG_SCSI_DTC3280 is not set
+# CONFIG_SCSI_EATA is not set
+# CONFIG_SCSI_ESP_CORE is not set
+# CONFIG_SCSI_FC_ATTRS is not set
+# CONFIG_SCSI_FUTURE_DOMAIN is not set
+# CONFIG_SCSI_GDTH is not set
+# CONFIG_SCSI_GENERIC_NCR5380 is not set
+# CONFIG_SCSI_GENERIC_NCR5380_MMIO is not set
+# CONFIG_SCSI_HPTIOP is not set
+# CONFIG_SCSI_IN2000 is not set
+# CONFIG_SCSI_INIA100 is not set
+# CONFIG_SCSI_INITIO is not set
+# CONFIG_SCSI_IPR is not set
+# CONFIG_SCSI_IPS is not set
+# CONFIG_SCSI_ISCSI_ATTRS is not set
+# CONFIG_SCSI_LOGGING is not set
+CONFIG_SCSI_LOWLEVEL=y
+# CONFIG_SCSI_LPFC is not set
+CONFIG_SCSI_MULTI_LUN=y
+# CONFIG_SCSI_NCR53C406A is not set
+# CONFIG_SCSI_NETLINK is not set
+# CONFIG_SCSI_NSP32 is not set
+# CONFIG_SCSI_PAS16 is not set
+CONFIG_SCSI_PROC_FS=y
+# CONFIG_SCSI_PSI240I is not set
+# CONFIG_SCSI_QLA_FC is not set
+# CONFIG_SCSI_QLA_ISCSI is not set
+# CONFIG_SCSI_QLOGIC_1280 is not set
+# CONFIG_SCSI_QLOGIC_FAS is not set
+# CONFIG_SCSI_SAS_ATTRS is not set
+# CONFIG_SCSI_SAS_LIBSAS is not set
+# CONFIG_SCSI_SCAN_ASYNC is not set
+# CONFIG_SCSI_SEAGATE is not set
+# CONFIG_SCSI_SPI_ATTRS is not set
+# CONFIG_SCSI_SRP is not set
+# CONFIG_SCSI_STEX is not set
+# CONFIG_SCSI_SYM53C416 is not set
+# CONFIG_SCSI_SYM53C8XX_2 is not set
+# CONFIG_SCSI_T128 is not set
+# CONFIG_SCSI_TGT is not set
+# CONFIG_SCSI_U14_34F is not set
+# CONFIG_SCSI_ULTRASTOR is not set
+# CONFIG_SECCOMP is not set
+# CONFIG_SECURITY is not set
+CONFIG_SELECT_MEMORY_MODEL=y
+# CONFIG_SENSORS_ABITUGURU is not set
+# CONFIG_SENSORS_AD7418 is not set
+# CONFIG_SENSORS_ADM1021 is not set
+# CONFIG_SENSORS_ADM1025 is not set
+# CONFIG_SENSORS_ADM1026 is not set
+# CONFIG_SENSORS_ADM1029 is not set
+# CONFIG_SENSORS_ADM1031 is not set
+# CONFIG_SENSORS_ADM9240 is not set
+# CONFIG_SENSORS_ASB100 is not set
+# CONFIG_SENSORS_ATXP1 is not set
+# CONFIG_SENSORS_DS1337 is not set
+# CONFIG_SENSORS_DS1374 is not set
+# CONFIG_SENSORS_DS1621 is not set
+# CONFIG_SENSORS_EEPROM is not set
+# CONFIG_SENSORS_F71805F is not set
+# CONFIG_SENSORS_FSCHER is not set
+# CONFIG_SENSORS_FSCPOS is not set
+# CONFIG_SENSORS_GL518SM is not set
+# CONFIG_SENSORS_GL520SM is not set
+# CONFIG_SENSORS_HDAPS is not set
+# CONFIG_SENSORS_IT87 is not set
+# CONFIG_SENSORS_K8TEMP is not set
+# CONFIG_SENSORS_LM63 is not set
+# CONFIG_SENSORS_LM75 is not set
+# CONFIG_SENSORS_LM77 is not set
+# CONFIG_SENSORS_LM78 is not set
+# CONFIG_SENSORS_LM80 is not set
+# CONFIG_SENSORS_LM83 is not set
+# CONFIG_SENSORS_LM85 is not set
+# CONFIG_SENSORS_LM87 is not set
+# CONFIG_SENSORS_LM90 is not set
+# CONFIG_SENSORS_LM92 is not set
+# CONFIG_SENSORS_MAX1619 is not set
+# CONFIG_SENSORS_MAX6650 is not set
+# CONFIG_SENSORS_MAX6875 is not set
+# CONFIG_SENSORS_PC87427 is not set
+# CONFIG_SENSORS_PCA9539 is not set
+# CONFIG_SENSORS_PCF8574 is not set
+# CONFIG_SENSORS_PCF8591 is not set
+# CONFIG_SENSORS_SIS5595 is not set
+# CONFIG_SENSORS_SMSC47B397 is not set
+# CONFIG_SENSORS_SMSC47M1 is not set
+# CONFIG_SENSORS_SMSC47M192 is not set
+# CONFIG_SENSORS_VIA686A is not set
+# CONFIG_SENSORS_VT1211 is not set
+# CONFIG_SENSORS_VT8231 is not set
+# CONFIG_SENSORS_W83627EHF is not set
+# CONFIG_SENSORS_W83627HF is not set
+# CONFIG_SENSORS_W83781D is not set
+# CONFIG_SENSORS_W83791D is not set
+# CONFIG_SENSORS_W83792D is not set
+# CONFIG_SENSORS_W83793 is not set
+# CONFIG_SENSORS_W83L785TS is not set
+CONFIG_SERIAL_8250=y
+CONFIG_SERIAL_8250_CONSOLE=y
+CONFIG_SERIAL_8250_CS=m
+CONFIG_SERIAL_8250_NR_UARTS=2
+# CONFIG_SERIAL_8250_PCI is not set
+CONFIG_SERIAL_8250_RUNTIME_UARTS=2
+CONFIG_SERIAL_CORE=y
+CONFIG_SERIAL_CORE_CONSOLE=y
+# CONFIG_SERIAL_JSM is not set
+# CONFIG_SERIAL_NONSTANDARD is not set
+# CONFIG_SERIAL_UARTLITE is not set
+# CONFIG_SERIO is not set
+# CONFIG_SGI_IOC4 is not set
+# CONFIG_SGI_PARTITION is not set
+# CONFIG_SHAPER is not set
+CONFIG_SHMEM=y
+CONFIG_SIGNALFD=y
+# CONFIG_SIS190 is not set
+# CONFIG_SIS900 is not set
+# CONFIG_SK98LIN is not set
+# CONFIG_SKGE is not set
+# CONFIG_SKY2 is not set
+CONFIG_SLAB=y
+CONFIG_SLHC=m
+# CONFIG_SLIP is not set
+# CONFIG_SLOB is not set
+# CONFIG_SLUB is not set
+# CONFIG_SMB_FS is not set
+# CONFIG_SMB_NLS_DEFAULT is not set
+CONFIG_SND=m
+# CONFIG_SND_AD1816A is not set
+# CONFIG_SND_AD1848 is not set
+# CONFIG_SND_AD1889 is not set
+# CONFIG_SND_ADLIB is not set
+# CONFIG_SND_ALI5451 is not set
+# CONFIG_SND_ALS100 is not set
+# CONFIG_SND_ALS300 is not set
+# CONFIG_SND_ALS4000 is not set
+# CONFIG_SND_ATIIXP is not set
+# CONFIG_SND_ATIIXP_MODEM is not set
+# CONFIG_SND_AU8810 is not set
+# CONFIG_SND_AU8820 is not set
+# CONFIG_SND_AU8830 is not set
+# CONFIG_SND_AZT2320 is not set
+# CONFIG_SND_AZT3328 is not set
+# CONFIG_SND_BT87X is not set
+# CONFIG_SND_CA0106 is not set
+# CONFIG_SND_CMI8330 is not set
+# CONFIG_SND_CMIPCI is not set
+# CONFIG_SND_CS4231 is not set
+# CONFIG_SND_CS4232 is not set
+# CONFIG_SND_CS4236 is not set
+# CONFIG_SND_CS4281 is not set
+# CONFIG_SND_CS46XX is not set
+# CONFIG_SND_CS5535AUDIO is not set
+# CONFIG_SND_DARLA20 is not set
+# CONFIG_SND_DARLA24 is not set
+# CONFIG_SND_DEBUG is not set
+# CONFIG_SND_DT019X is not set
+# CONFIG_SND_DUMMY is not set
+# CONFIG_SND_DYNAMIC_MINORS is not set
+# CONFIG_SND_ECHO3G is not set
+# CONFIG_SND_EMU10K1 is not set
+# CONFIG_SND_EMU10K1X is not set
+# CONFIG_SND_ENS1370 is not set
+# CONFIG_SND_ENS1371 is not set
+# CONFIG_SND_ES1688 is not set
+# CONFIG_SND_ES18XX is not set
+# CONFIG_SND_ES1938 is not set
+# CONFIG_SND_ES1968 is not set
+# CONFIG_SND_ES968 is not set
+# CONFIG_SND_FM801 is not set
+# CONFIG_SND_GINA20 is not set
+# CONFIG_SND_GINA24 is not set
+# CONFIG_SND_GUSCLASSIC is not set
+# CONFIG_SND_GUSEXTREME is not set
+# CONFIG_SND_GUSMAX is not set
+# CONFIG_SND_HDA_INTEL is not set
+# CONFIG_SND_HDSP is not set
+# CONFIG_SND_HDSPM is not set
+CONFIG_SND_HWDEP=m
+# CONFIG_SND_ICE1712 is not set
+# CONFIG_SND_ICE1724 is not set
+# CONFIG_SND_INDIGO is not set
+# CONFIG_SND_INDIGODJ is not set
+# CONFIG_SND_INDIGOIO is not set
+# CONFIG_SND_INTEL8X0 is not set
+# CONFIG_SND_INTEL8X0M is not set
+# CONFIG_SND_INTERWAVE is not set
+# CONFIG_SND_INTERWAVE_STB is not set
+# CONFIG_SND_KORG1212 is not set
+# CONFIG_SND_LAYLA20 is not set
+# CONFIG_SND_LAYLA24 is not set
+# CONFIG_SND_MAESTRO3 is not set
+# CONFIG_SND_MIA is not set
+# CONFIG_SND_MIRO is not set
+# CONFIG_SND_MIXART is not set
+CONFIG_SND_MIXER_OSS=m
+# CONFIG_SND_MONA is not set
+# CONFIG_SND_MPU401 is not set
+# CONFIG_SND_MTPAV is not set
+# CONFIG_SND_NM256 is not set
+# CONFIG_SND_OPL3SA2 is not set
+# CONFIG_SND_OPTI92X_AD1848 is not set
+# CONFIG_SND_OPTI92X_CS4231 is not set
+# CONFIG_SND_OPTI93X is not set
+CONFIG_SND_OSSEMUL=y
+CONFIG_SND_PCM=m
+CONFIG_SND_PCM_OSS=m
+CONFIG_SND_PCM_OSS_PLUGINS=y
+# CONFIG_SND_PCXHR is not set
+# CONFIG_SND_PDAUDIOCF is not set
+CONFIG_SND_RAWMIDI=m
+# CONFIG_SND_RIPTIDE is not set
+# CONFIG_SND_RME32 is not set
+# CONFIG_SND_RME96 is not set
+# CONFIG_SND_RME9652 is not set
+# CONFIG_SND_RTCTIMER is not set
+# CONFIG_SND_SB16 is not set
+# CONFIG_SND_SB8 is not set
+# CONFIG_SND_SBAWE is not set
+# CONFIG_SND_SEQUENCER is not set
+# CONFIG_SND_SERIAL_U16550 is not set
+# CONFIG_SND_SGALAXY is not set
+# CONFIG_SND_SOC is not set
+# CONFIG_SND_SONICVIBES is not set
+# CONFIG_SND_SSCAPE is not set
+# CONFIG_SND_SUPPORT_OLD_API is not set
+CONFIG_SND_TIMER=m
+# CONFIG_SND_TRIDENT is not set
+CONFIG_SND_USB_AUDIO=m
+# CONFIG_SND_USB_CAIAQ is not set
+# CONFIG_SND_USB_USX2Y is not set
+# CONFIG_SND_VERBOSE_PRINTK is not set
+CONFIG_SND_VERBOSE_PROCFS=y
+# CONFIG_SND_VIA82XX is not set
+# CONFIG_SND_VIA82XX_MODEM is not set
+# CONFIG_SND_VX222 is not set
+# CONFIG_SND_VXPOCKET is not set
+# CONFIG_SND_WAVEFRONT is not set
+# CONFIG_SND_YMFPCI is not set
+# CONFIG_SNI_RM is not set
+# CONFIG_SOLARIS_X86_PARTITION is not set
+CONFIG_SOUND=m
+# CONFIG_SOUND_PRIME is not set
+# CONFIG_SPARSEMEM_MANUAL is not set
+# CONFIG_SPI is not set
+# CONFIG_SPI_MASTER is not set
+CONFIG_SPLIT_PTLOCK_CPUS=4
+CONFIG_SQUASHFS=y
+# CONFIG_SQUASHFS_EMBEDDED is not set
+CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE=3
+# CONFIG_SQUASHFS_VMALLOC is not set
+# CONFIG_SSFDC is not set
+CONFIG_STACKTRACE_SUPPORT=y
+CONFIG_STANDALONE=y
+# CONFIG_STRIP is not set
+# CONFIG_SUNDANCE is not set
+# CONFIG_SUNGEM is not set
+CONFIG_SUNRPC=m
+# CONFIG_SUNRPC_BIND34 is not set
+CONFIG_SUNRPC_GSS=m
+# CONFIG_SUN_PARTITION is not set
+CONFIG_SUSPEND_UP_POSSIBLE=y
+CONFIG_SWAP=y
+# CONFIG_SYNCLINK_CS is not set
+CONFIG_SYN_COOKIES=y
+CONFIG_SYSCTL=y
+CONFIG_SYSCTL_SYSCALL=y
+CONFIG_SYSFS=y
+# CONFIG_SYSFS_DEPRECATED is not set
+# CONFIG_SYSV68_PARTITION is not set
+CONFIG_SYSVIPC=y
+# CONFIG_SYSV_FS is not set
+# CONFIG_SYS_HYPERVISOR is not set
+# CONFIG_TASKSTATS is not set
+# CONFIG_TCG_TPM is not set
+CONFIG_TCP_CONG_ADVANCED=y
+CONFIG_TCP_CONG_BIC=m
+CONFIG_TCP_CONG_CUBIC=m
+CONFIG_TCP_CONG_HSTCP=m
+CONFIG_TCP_CONG_HTCP=m
+CONFIG_TCP_CONG_HYBLA=m
+CONFIG_TCP_CONG_ILLINOIS=m
+CONFIG_TCP_CONG_LP=m
+CONFIG_TCP_CONG_SCALABLE=m
+CONFIG_TCP_CONG_VEGAS=y
+CONFIG_TCP_CONG_VENO=m
+CONFIG_TCP_CONG_WESTWOOD=m
+CONFIG_TCP_CONG_YEAH=m
+# CONFIG_TCP_MD5SIG is not set
+CONFIG_TEXTSEARCH=y
+CONFIG_TEXTSEARCH_BM=m
+CONFIG_TEXTSEARCH_FSM=m
+CONFIG_TEXTSEARCH_KMP=m
+# CONFIG_TIFM_CORE is not set
+# CONFIG_TIGON3 is not set
+CONFIG_TIMERFD=y
+# CONFIG_TINY_SHMEM is not set
+# CONFIG_TIPC is not set
+# CONFIG_TLAN is not set
+CONFIG_TMD_HERMES=m
+CONFIG_TMPFS=y
+# CONFIG_TMPFS_POSIX_ACL is not set
+# CONFIG_TR is not set
+CONFIG_TRACE_IRQFLAGS_SUPPORT=y
+CONFIG_TUN=m
+# CONFIG_TUNER_3036 is not set
+CONFIG_UDF_FS=m
+CONFIG_UDF_NLS=y
+# CONFIG_UFS_FS is not set
+# CONFIG_UIO is not set
+# CONFIG_ULTRIX_PARTITION is not set
+CONFIG_UNIX=y
+CONFIG_UNIX98_PTYS=y
+# CONFIG_UNIXWARE_DISKLABEL is not set
+CONFIG_USB=m
+# CONFIG_USB_ACECAD is not set
+CONFIG_USB_ACM=m
+# CONFIG_USB_ADUTUX is not set
+# CONFIG_USB_AIPTEK is not set
+CONFIG_USB_ALI_M5632=y
+CONFIG_USB_AN2720=y
+# CONFIG_USB_APPLEDISPLAY is not set
+# CONFIG_USB_APPLETOUCH is not set
+CONFIG_USB_ARCH_HAS_EHCI=y
+CONFIG_USB_ARCH_HAS_HCD=y
+CONFIG_USB_ARCH_HAS_OHCI=y
+CONFIG_USB_ARMLINUX=y
+# CONFIG_USB_ATI_REMOTE is not set
+# CONFIG_USB_ATI_REMOTE2 is not set
+CONFIG_USB_ATM=m
+# CONFIG_USB_AUERSWALD is not set
+# CONFIG_USB_BANDWIDTH is not set
+CONFIG_USB_BELKIN=y
+# CONFIG_USB_BERRY_CHARGE is not set
+CONFIG_USB_CATC=m
+# CONFIG_USB_CXACRU is not set
+# CONFIG_USB_CYPRESS_CY7C63 is not set
+# CONFIG_USB_CYTHERM is not set
+# CONFIG_USB_DABUSB is not set
+# CONFIG_USB_DEBUG is not set
+CONFIG_USB_DEVICEFS=y
+# CONFIG_USB_DEVICE_CLASS is not set
+# CONFIG_USB_DSBR is not set
+# CONFIG_USB_DYNAMIC_MINORS is not set
+# CONFIG_USB_EHCI_ROOT_HUB_TT is not set
+# CONFIG_USB_EHCI_SPLIT_ISO is not set
+# CONFIG_USB_EHCI_TT_NEWSCHED is not set
+# CONFIG_USB_EMI26 is not set
+# CONFIG_USB_EMI62 is not set
+# CONFIG_USB_EPSON2888 is not set
+# CONFIG_USB_ET61X251 is not set
+CONFIG_USB_EZUSB=y
+# CONFIG_USB_FTDI_ELAN is not set
+# CONFIG_USB_GADGET is not set
+CONFIG_USB_HID=m
+# CONFIG_USB_HIDDEV is not set
+CONFIG_USB_HIDINPUT=y
+# CONFIG_USB_HIDINPUT_POWERBOOK is not set
+# CONFIG_USB_IBMCAM is not set
+# CONFIG_USB_IDMOUSE is not set
+# CONFIG_USB_IOWARRIOR is not set
+# CONFIG_USB_ISP116X_HCD is not set
+CONFIG_USB_KAWETH=m
+# CONFIG_USB_KBD is not set
+# CONFIG_USB_KBTAB is not set
+# CONFIG_USB_KC2190 is not set
+# CONFIG_USB_KEYSPAN_REMOTE is not set
+# CONFIG_USB_KONICAWC is not set
+# CONFIG_USB_LCD is not set
+# CONFIG_USB_LD is not set
+# CONFIG_USB_LED is not set
+# CONFIG_USB_LEGOTOWER is not set
+# CONFIG_USB_LIBUSUAL is not set
+# CONFIG_USB_MDC800 is not set
+# CONFIG_USB_MICROTEK is not set
+# CONFIG_USB_MON is not set
+# CONFIG_USB_MOUSE is not set
+CONFIG_USB_NET_AX8817X=m
+CONFIG_USB_NET_CDCETHER=m
+CONFIG_USB_NET_CDC_SUBSET=m
+CONFIG_USB_NET_DM9601=m
+CONFIG_USB_NET_GL620A=m
+CONFIG_USB_NET_MCS7830=m
+CONFIG_USB_NET_NET1080=m
+CONFIG_USB_NET_PLUSB=m
+CONFIG_USB_NET_RNDIS_HOST=m
+CONFIG_USB_NET_ZAURUS=m
+# CONFIG_USB_OHCI_BIG_ENDIAN is not set
+# CONFIG_USB_OHCI_HCD is not set
+CONFIG_USB_OHCI_LITTLE_ENDIAN=y
+# CONFIG_USB_OTG is not set
+# CONFIG_USB_OV511 is not set
+CONFIG_USB_PEGASUS=m
+# CONFIG_USB_PHIDGET is not set
+# CONFIG_USB_POWERMATE is not set
+CONFIG_USB_PRINTER=m
+# CONFIG_USB_QUICKCAM_MESSENGER is not set
+# CONFIG_USB_RIO500 is not set
+# CONFIG_USB_RTL8150 is not set
+# CONFIG_USB_SE401 is not set
+CONFIG_USB_SERIAL=m
+CONFIG_USB_SERIAL_AIRCABLE=m
+CONFIG_USB_SERIAL_AIRPRIME=m
+CONFIG_USB_SERIAL_ARK3116=m
+CONFIG_USB_SERIAL_BELKIN=m
+CONFIG_USB_SERIAL_CP2101=m
+CONFIG_USB_SERIAL_CYBERJACK=m
+CONFIG_USB_SERIAL_CYPRESS_M8=m
+# CONFIG_USB_SERIAL_DEBUG is not set
+CONFIG_USB_SERIAL_DIGI_ACCELEPORT=m
+CONFIG_USB_SERIAL_EDGEPORT=m
+CONFIG_USB_SERIAL_EDGEPORT_TI=m
+CONFIG_USB_SERIAL_EMPEG=m
+CONFIG_USB_SERIAL_FTDI_SIO=m
+CONFIG_USB_SERIAL_FUNSOFT=m
+CONFIG_USB_SERIAL_GARMIN=m
+CONFIG_USB_SERIAL_GENERIC=y
+CONFIG_USB_SERIAL_HP4X=m
+CONFIG_USB_SERIAL_IPAQ=m
+CONFIG_USB_SERIAL_IPW=m
+CONFIG_USB_SERIAL_IR=m
+CONFIG_USB_SERIAL_KEYSPAN=m
+CONFIG_USB_SERIAL_KEYSPAN_MPR=y
+CONFIG_USB_SERIAL_KEYSPAN_PDA=m
+CONFIG_USB_SERIAL_KEYSPAN_USA18X=y
+CONFIG_USB_SERIAL_KEYSPAN_USA19=y
+CONFIG_USB_SERIAL_KEYSPAN_USA19QI=y
+CONFIG_USB_SERIAL_KEYSPAN_USA19QW=y
+CONFIG_USB_SERIAL_KEYSPAN_USA19W=y
+CONFIG_USB_SERIAL_KEYSPAN_USA28=y
+CONFIG_USB_SERIAL_KEYSPAN_USA28X=y
+CONFIG_USB_SERIAL_KEYSPAN_USA28XA=y
+CONFIG_USB_SERIAL_KEYSPAN_USA28XB=y
+CONFIG_USB_SERIAL_KEYSPAN_USA49W=y
+CONFIG_USB_SERIAL_KEYSPAN_USA49WLC=y
+CONFIG_USB_SERIAL_KLSI=m
+CONFIG_USB_SERIAL_KOBIL_SCT=m
+CONFIG_USB_SERIAL_MCT_U232=m
+CONFIG_USB_SERIAL_MOS7720=m
+CONFIG_USB_SERIAL_MOS7840=m
+CONFIG_USB_SERIAL_NAVMAN=m
+CONFIG_USB_SERIAL_OMNINET=m
+CONFIG_USB_SERIAL_OPTION=m
+CONFIG_USB_SERIAL_PL2303=m
+CONFIG_USB_SERIAL_SAFE=m
+CONFIG_USB_SERIAL_SAFE_PADDED=y
+CONFIG_USB_SERIAL_SIERRAWIRELESS=m
+CONFIG_USB_SERIAL_TI=m
+CONFIG_USB_SERIAL_VISOR=m
+CONFIG_USB_SERIAL_WHITEHEAT=m
+CONFIG_USB_SERIAL_XIRCOM=m
+# CONFIG_USB_SISUSBVGA is not set
+# CONFIG_USB_SL811_HCD is not set
+# CONFIG_USB_SN9C102 is not set
+CONFIG_USB_SPEEDTOUCH=m
+CONFIG_USB_STORAGE=m
+CONFIG_USB_STORAGE_ALAUDA=y
+CONFIG_USB_STORAGE_DATAFAB=y
+# CONFIG_USB_STORAGE_DEBUG is not set
+CONFIG_USB_STORAGE_DPCM=y
+CONFIG_USB_STORAGE_FREECOM=y
+# CONFIG_USB_STORAGE_ISD200 is not set
+CONFIG_USB_STORAGE_JUMPSHOT=y
+CONFIG_USB_STORAGE_KARMA=y
+# CONFIG_USB_STORAGE_ONETOUCH is not set
+CONFIG_USB_STORAGE_SDDR09=y
+CONFIG_USB_STORAGE_SDDR55=y
+CONFIG_USB_STORAGE_USBAT=y
+# CONFIG_USB_STV680 is not set
+CONFIG_USB_SUPPORT=y
+# CONFIG_USB_TEST is not set
+# CONFIG_USB_TOUCHSCREEN is not set
+# CONFIG_USB_TRANCEVIBRATOR is not set
+CONFIG_USB_UEAGLEATM=m
+CONFIG_USB_USBNET=m
+CONFIG_USB_USBNET_MII=m
+# CONFIG_USB_VICAM is not set
+# CONFIG_USB_W9968CF is not set
+# CONFIG_USB_WACOM is not set
+# CONFIG_USB_XPAD is not set
+# CONFIG_USB_XUSBATM is not set
+CONFIG_USB_YEALINK=m
+# CONFIG_USB_ZC0301 is not set
+# CONFIG_USB_ZD1201 is not set
+# CONFIG_USB_ZR364XX is not set
+# CONFIG_UTS_NS is not set
+CONFIG_VFAT_FS=m
+# CONFIG_VIA_VELOCITY is not set
+# CONFIG_VIDEO_ADV7170 is not set
+# CONFIG_VIDEO_ADV7175 is not set
+# CONFIG_VIDEO_ADV_DEBUG is not set
+# CONFIG_VIDEO_BT819 is not set
+# CONFIG_VIDEO_BT848 is not set
+# CONFIG_VIDEO_BT856 is not set
+# CONFIG_VIDEO_BT866 is not set
+# CONFIG_VIDEO_CAFE_CCIC is not set
+# CONFIG_VIDEO_CAPTURE_DRIVERS is not set
+# CONFIG_VIDEO_CPIA is not set
+# CONFIG_VIDEO_CS53L32A is not set
+# CONFIG_VIDEO_CX2341X is not set
+# CONFIG_VIDEO_CX25840 is not set
+# CONFIG_VIDEO_CX88 is not set
+CONFIG_VIDEO_DEV=m
+# CONFIG_VIDEO_DPC is not set
+# CONFIG_VIDEO_EM28XX is not set
+# CONFIG_VIDEO_HELPER_CHIPS_AUTO is not set
+# CONFIG_VIDEO_HEXIUM_GEMINI is not set
+# CONFIG_VIDEO_HEXIUM_ORION is not set
+# CONFIG_VIDEO_IVTV is not set
+# CONFIG_VIDEO_KS0127 is not set
+# CONFIG_VIDEO_MSP3400 is not set
+# CONFIG_VIDEO_MXB is not set
+# CONFIG_VIDEO_OUTPUT_CONTROL is not set
+# CONFIG_VIDEO_OV7670 is not set
+# CONFIG_VIDEO_OVCAMCHIP is not set
+# CONFIG_VIDEO_PMS is not set
+# CONFIG_VIDEO_PVRUSB2 is not set
+# CONFIG_VIDEO_SAA5246A is not set
+# CONFIG_VIDEO_SAA5249 is not set
+# CONFIG_VIDEO_SAA7110 is not set
+# CONFIG_VIDEO_SAA7111 is not set
+# CONFIG_VIDEO_SAA7114 is not set
+# CONFIG_VIDEO_SAA711X is not set
+# CONFIG_VIDEO_SAA7127 is not set
+# CONFIG_VIDEO_SAA7134 is not set
+# CONFIG_VIDEO_SAA7185 is not set
+# CONFIG_VIDEO_SAA7191 is not set
+# CONFIG_VIDEO_STRADIS is not set
+# CONFIG_VIDEO_TDA7432 is not set
+# CONFIG_VIDEO_TDA9840 is not set
+# CONFIG_VIDEO_TDA9875 is not set
+# CONFIG_VIDEO_TEA6415C is not set
+# CONFIG_VIDEO_TEA6420 is not set
+# CONFIG_VIDEO_TLV320AIC23B is not set
+# CONFIG_VIDEO_TVAUDIO is not set
+# CONFIG_VIDEO_TVP5150 is not set
+# CONFIG_VIDEO_UPD64031A is not set
+# CONFIG_VIDEO_UPD64083 is not set
+# CONFIG_VIDEO_USBVISION is not set
+# CONFIG_VIDEO_V4L1 is not set
+CONFIG_VIDEO_V4L1_COMPAT=y
+CONFIG_VIDEO_V4L2=y
+# CONFIG_VIDEO_VIVI is not set
+# CONFIG_VIDEO_VPX3220 is not set
+# CONFIG_VIDEO_WM8739 is not set
+# CONFIG_VIDEO_WM8775 is not set
+# CONFIG_VIDEO_ZORAN is not set
+CONFIG_VIRT_TO_BUS=y
+# CONFIG_VITESSE_PHY is not set
+CONFIG_VLAN_8021Q=y
+# CONFIG_VM_EVENT_COUNTERS is not set
+# CONFIG_VT is not set
+# CONFIG_VXFS_FS is not set
+# CONFIG_W1 is not set
+# CONFIG_WAN is not set
+# CONFIG_WAN_ROUTER is not set
+CONFIG_WATCHDOG=y
+# CONFIG_WATCHDOG_NOWAYOUT is not set
+# CONFIG_WDTPCI is not set
+CONFIG_WIRELESS_EXT=y
+CONFIG_WLAN_80211=y
+# CONFIG_WLAN_PRE80211 is not set
+# CONFIG_WR_PPMC is not set
+# CONFIG_X25 is not set
+CONFIG_XFRM=y
+# CONFIG_XFRM_MIGRATE is not set
+# CONFIG_XFRM_SUB_POLICY is not set
+CONFIG_XFRM_USER=m
+CONFIG_XFS_FS=m
+# CONFIG_XFS_POSIX_ACL is not set
+# CONFIG_XFS_QUOTA is not set
+# CONFIG_XFS_RT is not set
+# CONFIG_XFS_SECURITY is not set
+# CONFIG_YAFFS_FS is not set
+# CONFIG_YAM is not set
+# CONFIG_YELLOWFIN is not set
+CONFIG_YENTA=m
+# CONFIG_YENTA_O2 is not set
+# CONFIG_YENTA_RICOH is not set
+# CONFIG_YENTA_TI is not set
+# CONFIG_YENTA_TOSHIBA is not set
+CONFIG_ZD1211RW=m
+# CONFIG_ZD1211RW_DEBUG is not set
+CONFIG_ZISOFS=y
+CONFIG_ZISOFS_FS=m
+CONFIG_ZLIB_DEFLATE=y
+CONFIG_ZLIB_INFLATE=y
+CONFIG_ZONE_DMA=y
+CONFIG_ZONE_DMA_FLAG=1
--- /dev/null
+diff -urN linux-2.6.22.4/fs/Kconfig linux-2.6.22.4-squashfs/fs/Kconfig
+--- linux-2.6.22.4/fs/Kconfig 2007-08-21 06:33:06.000000000 +0200
++++ linux-2.6.22.4-squashfs/fs/Kconfig 2007-09-20 19:13:44.000000000 +0200
+@@ -1367,6 +1367,71 @@
+
+ If unsure, say N.
+
++config SQUASHFS
++ tristate "SquashFS 3.0 - Squashed file system support"
++ select ZLIB_INFLATE
++ help
++ Saying Y here includes support for SquashFS 3.0 (a Compressed Read-Only File
++ System). Squashfs is a highly compressed read-only filesystem for Linux.
++ It uses zlib compression to compress both files, inodes and directories.
++ Inodes in the system are very small and all blocks are packed to minimise
++ data overhead. Block sizes greater than 4K are supported up to a maximum of 64K.
++ SquashFS 3.0 supports 64 bit filesystems and files (larger than 4GB), full
++ uid/gid information, hard links and timestamps.
++
++ Squashfs is intended for general read-only filesystem use, for archival
++ use (i.e. in cases where a .tar.gz file may be used), and in embedded
++ systems where low overhead is needed. Further information and filesystem tools
++ are available from http://squashfs.sourceforge.net.
++
++ If you want to compile this as a module ( = code which can be
++ inserted in and removed from the running kernel whenever you want),
++ say M here and read <file:Documentation/modules.txt>. The module
++ will be called squashfs. Note that the root file system (the one
++ containing the directory /) cannot be compiled as a module.
++
++ If unsure, say N.
++
++config SQUASHFS_EMBEDDED
++
++ bool "Additional options for memory-constrained systems"
++ depends on SQUASHFS
++ default n
++ help
++ Saying Y here allows you to specify cache sizes and how Squashfs
++ allocates memory. This is only intended for memory constrained
++ systems.
++
++ If unsure, say N.
++
++config SQUASHFS_FRAGMENT_CACHE_SIZE
++ int "Number of fragments cached" if SQUASHFS_EMBEDDED
++ depends on SQUASHFS
++ default "3"
++ help
++ By default SquashFS caches the last 3 fragments read from
++ the filesystem. Increasing this amount may mean SquashFS
++ has to re-read fragments less often from disk, at the expense
++ of extra system memory. Decreasing this amount will mean
++ SquashFS uses less memory at the expense of extra reads from disk.
++
++ Note there must be at least one cached fragment. Anything
++ much more than three will probably not make much difference.
++
++config SQUASHFS_VMALLOC
++ bool "Use Vmalloc rather than Kmalloc" if SQUASHFS_EMBEDDED
++ depends on SQUASHFS
++ default n
++ help
++ By default SquashFS uses kmalloc to obtain fragment cache memory.
++ Kmalloc memory is the standard kernel allocator, but it can fail
++ on memory constrained systems. Because of the way Vmalloc works,
++ Vmalloc can succeed when kmalloc fails. Specifying this option
++ will make SquashFS always use Vmalloc to allocate the
++ fragment cache memory.
++
++ If unsure, say N.
++
+ config VXFS_FS
+ tristate "FreeVxFS file system support (VERITAS VxFS(TM) compatible)"
+ depends on BLOCK
+diff -urN linux-2.6.22.4/fs/Makefile linux-2.6.22.4-squashfs/fs/Makefile
+--- linux-2.6.22.4/fs/Makefile 2007-08-21 06:33:06.000000000 +0200
++++ linux-2.6.22.4-squashfs/fs/Makefile 2007-09-20 19:13:44.000000000 +0200
+@@ -72,6 +72,7 @@
+ obj-$(CONFIG_JBD2) += jbd2/
+ obj-$(CONFIG_EXT2_FS) += ext2/
+ obj-$(CONFIG_CRAMFS) += cramfs/
++obj-$(CONFIG_SQUASHFS) += squashfs/
+ obj-$(CONFIG_RAMFS) += ramfs/
+ obj-$(CONFIG_HUGETLBFS) += hugetlbfs/
+ obj-$(CONFIG_CODA_FS) += coda/
+diff -urN linux-2.6.22.4/fs/squashfs/inode.c linux-2.6.22.4-squashfs/fs/squashfs/inode.c
+--- linux-2.6.22.4/fs/squashfs/inode.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.22.4-squashfs/fs/squashfs/inode.c 2007-09-20 19:13:44.000000000 +0200
+@@ -0,0 +1,2122 @@
++/*
++ * Squashfs - a compressed read only filesystem for Linux
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005, 2006
++ * Phillip Lougher <phillip@lougher.org.uk>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2,
++ * or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * inode.c
++ */
++
++#include <linux/types.h>
++#include <linux/squashfs_fs.h>
++#include <linux/module.h>
++#include <linux/errno.h>
++#include <linux/slab.h>
++#include <linux/fs.h>
++#include <linux/smp_lock.h>
++#include <linux/slab.h>
++#include <linux/squashfs_fs_sb.h>
++#include <linux/squashfs_fs_i.h>
++#include <linux/buffer_head.h>
++#include <linux/vfs.h>
++#include <linux/init.h>
++#include <linux/dcache.h>
++#include <linux/wait.h>
++#include <linux/zlib.h>
++#include <linux/blkdev.h>
++#include <linux/vmalloc.h>
++#include <asm/uaccess.h>
++#include <asm/semaphore.h>
++
++#include "squashfs.h"
++
++static void squashfs_put_super(struct super_block *);
++static int squashfs_statfs(struct dentry *, struct kstatfs *);
++static int squashfs_symlink_readpage(struct file *file, struct page *page);
++static int squashfs_readpage(struct file *file, struct page *page);
++static int squashfs_readpage4K(struct file *file, struct page *page);
++static int squashfs_readdir(struct file *, void *, filldir_t);
++static struct inode *squashfs_alloc_inode(struct super_block *sb);
++static void squashfs_destroy_inode(struct inode *inode);
++static int init_inodecache(void);
++static void destroy_inodecache(void);
++static struct dentry *squashfs_lookup(struct inode *, struct dentry *,
++ struct nameidata *);
++static struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode);
++static long long read_blocklist(struct inode *inode, int index,
++ int readahead_blks, char *block_list,
++ unsigned short **block_p, unsigned int *bsize);
++static int squashfs_get_sb(struct file_system_type *, int,
++ const char *, void *, struct vfsmount *);
++
++
++static z_stream stream;
++
++static struct file_system_type squashfs_fs_type = {
++ .owner = THIS_MODULE,
++ .name = "squashfs",
++ .get_sb = squashfs_get_sb,
++ .kill_sb = kill_block_super,
++ .fs_flags = FS_REQUIRES_DEV
++};
++
++static unsigned char squashfs_filetype_table[] = {
++ DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK
++};
++
++static struct super_operations squashfs_ops = {
++ .alloc_inode = squashfs_alloc_inode,
++ .destroy_inode = squashfs_destroy_inode,
++ .statfs = squashfs_statfs,
++ .put_super = squashfs_put_super,
++};
++
++SQSH_EXTERN struct address_space_operations squashfs_symlink_aops = {
++ .readpage = squashfs_symlink_readpage
++};
++
++SQSH_EXTERN struct address_space_operations squashfs_aops = {
++ .readpage = squashfs_readpage
++};
++
++SQSH_EXTERN struct address_space_operations squashfs_aops_4K = {
++ .readpage = squashfs_readpage4K
++};
++
++static struct file_operations squashfs_dir_ops = {
++ .read = generic_read_dir,
++ .readdir = squashfs_readdir
++};
++
++SQSH_EXTERN struct inode_operations squashfs_dir_inode_ops = {
++ .lookup = squashfs_lookup
++};
++
++
++static struct buffer_head *get_block_length(struct super_block *s,
++ int *cur_index, int *offset, int *c_byte)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ unsigned short temp;
++ struct buffer_head *bh;
++
++ if (!(bh = sb_bread(s, *cur_index)))
++ goto out;
++
++ if (msblk->devblksize - *offset == 1) {
++ if (msblk->swap)
++ ((unsigned char *) &temp)[1] = *((unsigned char *)
++ (bh->b_data + *offset));
++ else
++ ((unsigned char *) &temp)[0] = *((unsigned char *)
++ (bh->b_data + *offset));
++ brelse(bh);
++ if (!(bh = sb_bread(s, ++(*cur_index))))
++ goto out;
++ if (msblk->swap)
++ ((unsigned char *) &temp)[0] = *((unsigned char *)
++ bh->b_data);
++ else
++ ((unsigned char *) &temp)[1] = *((unsigned char *)
++ bh->b_data);
++ *c_byte = temp;
++ *offset = 1;
++ } else {
++ if (msblk->swap) {
++ ((unsigned char *) &temp)[1] = *((unsigned char *)
++ (bh->b_data + *offset));
++ ((unsigned char *) &temp)[0] = *((unsigned char *)
++ (bh->b_data + *offset + 1));
++ } else {
++ ((unsigned char *) &temp)[0] = *((unsigned char *)
++ (bh->b_data + *offset));
++ ((unsigned char *) &temp)[1] = *((unsigned char *)
++ (bh->b_data + *offset + 1));
++ }
++ *c_byte = temp;
++ *offset += 2;
++ }
++
++ if (SQUASHFS_CHECK_DATA(msblk->sblk.flags)) {
++ if (*offset == msblk->devblksize) {
++ brelse(bh);
++ if (!(bh = sb_bread(s, ++(*cur_index))))
++ goto out;
++ *offset = 0;
++ }
++ if (*((unsigned char *) (bh->b_data + *offset)) !=
++ SQUASHFS_MARKER_BYTE) {
++ ERROR("Metadata block marker corrupt @ %x\n",
++ *cur_index);
++ brelse(bh);
++ goto out;
++ }
++ (*offset)++;
++ }
++ return bh;
++
++out:
++ return NULL;
++}
++
++
++SQSH_EXTERN unsigned int squashfs_read_data(struct super_block *s, char *buffer,
++ long long index, unsigned int length,
++ long long *next_index)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct buffer_head *bh[((SQUASHFS_FILE_MAX_SIZE - 1) >>
++ msblk->devblksize_log2) + 2];
++ unsigned int offset = index & ((1 << msblk->devblksize_log2) - 1);
++ unsigned int cur_index = index >> msblk->devblksize_log2;
++ int bytes, avail_bytes, b = 0, k;
++ char *c_buffer;
++ unsigned int compressed;
++ unsigned int c_byte = length;
++
++ if (c_byte) {
++ bytes = msblk->devblksize - offset;
++ compressed = SQUASHFS_COMPRESSED_BLOCK(c_byte);
++ c_buffer = compressed ? msblk->read_data : buffer;
++ c_byte = SQUASHFS_COMPRESSED_SIZE_BLOCK(c_byte);
++
++ TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed
++ ? "" : "un", (unsigned int) c_byte);
++
++ if (!(bh[0] = sb_getblk(s, cur_index)))
++ goto block_release;
++
++ for (b = 1; bytes < c_byte; b++) {
++ if (!(bh[b] = sb_getblk(s, ++cur_index)))
++ goto block_release;
++ bytes += msblk->devblksize;
++ }
++ ll_rw_block(READ, b, bh);
++ } else {
++ if (!(bh[0] = get_block_length(s, &cur_index, &offset,
++ &c_byte)))
++ goto read_failure;
++
++ bytes = msblk->devblksize - offset;
++ compressed = SQUASHFS_COMPRESSED(c_byte);
++ c_buffer = compressed ? msblk->read_data : buffer;
++ c_byte = SQUASHFS_COMPRESSED_SIZE(c_byte);
++
++ TRACE("Block @ 0x%llx, %scompressed size %d\n", index, compressed
++ ? "" : "un", (unsigned int) c_byte);
++
++ for (b = 1; bytes < c_byte; b++) {
++ if (!(bh[b] = sb_getblk(s, ++cur_index)))
++ goto block_release;
++ bytes += msblk->devblksize;
++ }
++ ll_rw_block(READ, b - 1, bh + 1);
++ }
++
++ if (compressed)
++ down(&msblk->read_data_mutex);
++
++ for (bytes = 0, k = 0; k < b; k++) {
++ avail_bytes = (c_byte - bytes) > (msblk->devblksize - offset) ?
++ msblk->devblksize - offset :
++ c_byte - bytes;
++ wait_on_buffer(bh[k]);
++ if (!buffer_uptodate(bh[k]))
++ goto block_release;
++ memcpy(c_buffer + bytes, bh[k]->b_data + offset, avail_bytes);
++ bytes += avail_bytes;
++ offset = 0;
++ brelse(bh[k]);
++ }
++
++ /*
++ * uncompress block
++ */
++ if (compressed) {
++ int zlib_err;
++
++ stream.next_in = c_buffer;
++ stream.avail_in = c_byte;
++ stream.next_out = buffer;
++ stream.avail_out = msblk->read_size;
++
++ if (((zlib_err = zlib_inflateInit(&stream)) != Z_OK) ||
++ ((zlib_err = zlib_inflate(&stream, Z_FINISH))
++ != Z_STREAM_END) || ((zlib_err =
++ zlib_inflateEnd(&stream)) != Z_OK)) {
++ ERROR("zlib_fs returned unexpected result 0x%x\n",
++ zlib_err);
++ bytes = 0;
++ } else
++ bytes = stream.total_out;
++
++ up(&msblk->read_data_mutex);
++ }
++
++ if (next_index)
++ *next_index = index + c_byte + (length ? 0 :
++ (SQUASHFS_CHECK_DATA(msblk->sblk.flags)
++ ? 3 : 2));
++ return bytes;
++
++block_release:
++ while (--b >= 0)
++ brelse(bh[b]);
++
++read_failure:
++ ERROR("sb_bread failed reading block 0x%x\n", cur_index);
++ return 0;
++}
++
++
++SQSH_EXTERN int squashfs_get_cached_block(struct super_block *s, char *buffer,
++ long long block, unsigned int offset,
++ int length, long long *next_block,
++ unsigned int *next_offset)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ int n, i, bytes, return_length = length;
++ long long next_index;
++
++ TRACE("Entered squashfs_get_cached_block [%llx:%x]\n", block, offset);
++
++ while ( 1 ) {
++ for (i = 0; i < SQUASHFS_CACHED_BLKS; i++)
++ if (msblk->block_cache[i].block == block)
++ break;
++
++ down(&msblk->block_cache_mutex);
++
++ if (i == SQUASHFS_CACHED_BLKS) {
++ /* read inode header block */
++ for (i = msblk->next_cache, n = SQUASHFS_CACHED_BLKS;
++ n ; n --, i = (i + 1) %
++ SQUASHFS_CACHED_BLKS)
++ if (msblk->block_cache[i].block !=
++ SQUASHFS_USED_BLK)
++ break;
++
++ if (n == 0) {
++ wait_queue_t wait;
++
++ init_waitqueue_entry(&wait, current);
++ add_wait_queue(&msblk->waitq, &wait);
++ set_current_state(TASK_UNINTERRUPTIBLE);
++ up(&msblk->block_cache_mutex);
++ schedule();
++ set_current_state(TASK_RUNNING);
++ remove_wait_queue(&msblk->waitq, &wait);
++ continue;
++ }
++ msblk->next_cache = (i + 1) % SQUASHFS_CACHED_BLKS;
++
++ if (msblk->block_cache[i].block ==
++ SQUASHFS_INVALID_BLK) {
++ if (!(msblk->block_cache[i].data =
++ kmalloc(SQUASHFS_METADATA_SIZE,
++ GFP_KERNEL))) {
++ ERROR("Failed to allocate cache"
++ "block\n");
++ up(&msblk->block_cache_mutex);
++ goto out;
++ }
++ }
++
++ msblk->block_cache[i].block = SQUASHFS_USED_BLK;
++ up(&msblk->block_cache_mutex);
++
++ if (!(msblk->block_cache[i].length =
++ squashfs_read_data(s,
++ msblk->block_cache[i].data,
++ block, 0, &next_index))) {
++ ERROR("Unable to read cache block [%llx:%x]\n",
++ block, offset);
++ goto out;
++ }
++
++ down(&msblk->block_cache_mutex);
++ wake_up(&msblk->waitq);
++ msblk->block_cache[i].block = block;
++ msblk->block_cache[i].next_index = next_index;
++ TRACE("Read cache block [%llx:%x]\n", block, offset);
++ }
++
++ if (msblk->block_cache[i].block != block) {
++ up(&msblk->block_cache_mutex);
++ continue;
++ }
++
++ if ((bytes = msblk->block_cache[i].length - offset) >= length) {
++ if (buffer)
++ memcpy(buffer, msblk->block_cache[i].data +
++ offset, length);
++ if (msblk->block_cache[i].length - offset == length) {
++ *next_block = msblk->block_cache[i].next_index;
++ *next_offset = 0;
++ } else {
++ *next_block = block;
++ *next_offset = offset + length;
++ }
++ up(&msblk->block_cache_mutex);
++ goto finish;
++ } else {
++ if (buffer) {
++ memcpy(buffer, msblk->block_cache[i].data +
++ offset, bytes);
++ buffer += bytes;
++ }
++ block = msblk->block_cache[i].next_index;
++ up(&msblk->block_cache_mutex);
++ length -= bytes;
++ offset = 0;
++ }
++ }
++
++finish:
++ return return_length;
++out:
++ return 0;
++}
++
++
++static int get_fragment_location(struct super_block *s, unsigned int fragment,
++ long long *fragment_start_block,
++ unsigned int *fragment_size)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ long long start_block =
++ msblk->fragment_index[SQUASHFS_FRAGMENT_INDEX(fragment)];
++ int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET(fragment);
++ struct squashfs_fragment_entry fragment_entry;
++
++ if (msblk->swap) {
++ struct squashfs_fragment_entry sfragment_entry;
++
++ if (!squashfs_get_cached_block(s, (char *) &sfragment_entry,
++ start_block, offset,
++ sizeof(sfragment_entry), &start_block,
++ &offset))
++ goto out;
++ SQUASHFS_SWAP_FRAGMENT_ENTRY(&fragment_entry, &sfragment_entry);
++ } else
++ if (!squashfs_get_cached_block(s, (char *) &fragment_entry,
++ start_block, offset,
++ sizeof(fragment_entry), &start_block,
++ &offset))
++ goto out;
++
++ *fragment_start_block = fragment_entry.start_block;
++ *fragment_size = fragment_entry.size;
++
++ return 1;
++
++out:
++ return 0;
++}
++
++
++SQSH_EXTERN void release_cached_fragment(struct squashfs_sb_info *msblk, struct
++ squashfs_fragment_cache *fragment)
++{
++ down(&msblk->fragment_mutex);
++ fragment->locked --;
++ wake_up(&msblk->fragment_wait_queue);
++ up(&msblk->fragment_mutex);
++}
++
++
++SQSH_EXTERN struct squashfs_fragment_cache *get_cached_fragment(struct super_block
++ *s, long long start_block,
++ int length)
++{
++ int i, n;
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++
++ while ( 1 ) {
++ down(&msblk->fragment_mutex);
++
++ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS &&
++ msblk->fragment[i].block != start_block; i++);
++
++ if (i == SQUASHFS_CACHED_FRAGMENTS) {
++ for (i = msblk->next_fragment, n =
++ SQUASHFS_CACHED_FRAGMENTS; n &&
++ msblk->fragment[i].locked; n--, i = (i + 1) %
++ SQUASHFS_CACHED_FRAGMENTS);
++
++ if (n == 0) {
++ wait_queue_t wait;
++
++ init_waitqueue_entry(&wait, current);
++ add_wait_queue(&msblk->fragment_wait_queue,
++ &wait);
++ set_current_state(TASK_UNINTERRUPTIBLE);
++ up(&msblk->fragment_mutex);
++ schedule();
++ set_current_state(TASK_RUNNING);
++ remove_wait_queue(&msblk->fragment_wait_queue,
++ &wait);
++ continue;
++ }
++ msblk->next_fragment = (msblk->next_fragment + 1) %
++ SQUASHFS_CACHED_FRAGMENTS;
++
++ if (msblk->fragment[i].data == NULL)
++ if (!(msblk->fragment[i].data = SQUASHFS_ALLOC
++ (SQUASHFS_FILE_MAX_SIZE))) {
++ ERROR("Failed to allocate fragment "
++ "cache block\n");
++ up(&msblk->fragment_mutex);
++ goto out;
++ }
++
++ msblk->fragment[i].block = SQUASHFS_INVALID_BLK;
++ msblk->fragment[i].locked = 1;
++ up(&msblk->fragment_mutex);
++
++ if (!(msblk->fragment[i].length = squashfs_read_data(s,
++ msblk->fragment[i].data,
++ start_block, length, NULL))) {
++ ERROR("Unable to read fragment cache block "
++ "[%llx]\n", start_block);
++ msblk->fragment[i].locked = 0;
++ goto out;
++ }
++
++ msblk->fragment[i].block = start_block;
++ TRACE("New fragment %d, start block %lld, locked %d\n",
++ i, msblk->fragment[i].block,
++ msblk->fragment[i].locked);
++ break;
++ }
++
++ msblk->fragment[i].locked++;
++ up(&msblk->fragment_mutex);
++ TRACE("Got fragment %d, start block %lld, locked %d\n", i,
++ msblk->fragment[i].block,
++ msblk->fragment[i].locked);
++ break;
++ }
++
++ return &msblk->fragment[i];
++
++out:
++ return NULL;
++}
++
++
++static struct inode *squashfs_new_inode(struct super_block *s,
++ struct squashfs_base_inode_header *inodeb)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct inode *i = new_inode(s);
++
++ if (i) {
++ i->i_ino = inodeb->inode_number;
++ i->i_mtime.tv_sec = inodeb->mtime;
++ i->i_atime.tv_sec = inodeb->mtime;
++ i->i_ctime.tv_sec = inodeb->mtime;
++ i->i_uid = msblk->uid[inodeb->uid];
++ i->i_mode = inodeb->mode;
++ i->i_size = 0;
++ if (inodeb->guid == SQUASHFS_GUIDS)
++ i->i_gid = i->i_uid;
++ else
++ i->i_gid = msblk->guid[inodeb->guid];
++ }
++
++ return i;
++}
++
++
++static struct inode *squashfs_iget(struct super_block *s, squashfs_inode_t inode)
++{
++ struct inode *i;
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ long long block = SQUASHFS_INODE_BLK(inode) +
++ sblk->inode_table_start;
++ unsigned int offset = SQUASHFS_INODE_OFFSET(inode);
++ long long next_block;
++ unsigned int next_offset;
++ union squashfs_inode_header id, sid;
++ struct squashfs_base_inode_header *inodeb = &id.base,
++ *sinodeb = &sid.base;
++
++ TRACE("Entered squashfs_iget\n");
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *) sinodeb, block,
++ offset, sizeof(*sinodeb), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_BASE_INODE_HEADER(inodeb, sinodeb,
++ sizeof(*sinodeb));
++ } else
++ if (!squashfs_get_cached_block(s, (char *) inodeb, block,
++ offset, sizeof(*inodeb), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ switch(inodeb->inode_type) {
++ case SQUASHFS_FILE_TYPE: {
++ unsigned int frag_size;
++ long long frag_blk;
++ struct squashfs_reg_inode_header *inodep = &id.reg;
++ struct squashfs_reg_inode_header *sinodep = &sid.reg;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_REG_INODE_HEADER(inodep, sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ frag_blk = SQUASHFS_INVALID_BLK;
++ if (inodep->fragment != SQUASHFS_INVALID_FRAG &&
++ !get_fragment_location(s,
++ inodep->fragment, &frag_blk, &frag_size))
++ goto failed_read;
++
++ if((i = squashfs_new_inode(s, inodeb)) == NULL)
++ goto failed_read1;
++
++ i->i_nlink = 1;
++ i->i_size = inodep->file_size;
++ i->i_fop = &generic_ro_fops;
++ i->i_mode |= S_IFREG;
++ i->i_blocks = ((i->i_size - 1) >> 9) + 1;
++ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk;
++ SQUASHFS_I(i)->u.s1.fragment_size = frag_size;
++ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset;
++ SQUASHFS_I(i)->start_block = inodep->start_block;
++ SQUASHFS_I(i)->u.s1.block_list_start = next_block;
++ SQUASHFS_I(i)->offset = next_offset;
++ if (sblk->block_size > 4096)
++ i->i_data.a_ops = &squashfs_aops;
++ else
++ i->i_data.a_ops = &squashfs_aops_4K;
++
++ TRACE("File inode %x:%x, start_block %llx, "
++ "block_list_start %llx, offset %x\n",
++ SQUASHFS_INODE_BLK(inode), offset,
++ inodep->start_block, next_block,
++ next_offset);
++ break;
++ }
++ case SQUASHFS_LREG_TYPE: {
++ unsigned int frag_size;
++ long long frag_blk;
++ struct squashfs_lreg_inode_header *inodep = &id.lreg;
++ struct squashfs_lreg_inode_header *sinodep = &sid.lreg;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_LREG_INODE_HEADER(inodep, sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ frag_blk = SQUASHFS_INVALID_BLK;
++ if (inodep->fragment != SQUASHFS_INVALID_FRAG &&
++ !get_fragment_location(s,
++ inodep->fragment, &frag_blk, &frag_size))
++ goto failed_read;
++
++ if((i = squashfs_new_inode(s, inodeb)) == NULL)
++ goto failed_read1;
++
++ i->i_nlink = inodep->nlink;
++ i->i_size = inodep->file_size;
++ i->i_fop = &generic_ro_fops;
++ i->i_mode |= S_IFREG;
++ i->i_blocks = ((i->i_size - 1) >> 9) + 1;
++ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk;
++ SQUASHFS_I(i)->u.s1.fragment_size = frag_size;
++ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset;
++ SQUASHFS_I(i)->start_block = inodep->start_block;
++ SQUASHFS_I(i)->u.s1.block_list_start = next_block;
++ SQUASHFS_I(i)->offset = next_offset;
++ if (sblk->block_size > 4096)
++ i->i_data.a_ops = &squashfs_aops;
++ else
++ i->i_data.a_ops = &squashfs_aops_4K;
++
++ TRACE("File inode %x:%x, start_block %llx, "
++ "block_list_start %llx, offset %x\n",
++ SQUASHFS_INODE_BLK(inode), offset,
++ inodep->start_block, next_block,
++ next_offset);
++ break;
++ }
++ case SQUASHFS_DIR_TYPE: {
++ struct squashfs_dir_inode_header *inodep = &id.dir;
++ struct squashfs_dir_inode_header *sinodep = &sid.dir;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_DIR_INODE_HEADER(inodep, sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ if((i = squashfs_new_inode(s, inodeb)) == NULL)
++ goto failed_read1;
++
++ i->i_nlink = inodep->nlink;
++ i->i_size = inodep->file_size;
++ i->i_op = &squashfs_dir_inode_ops;
++ i->i_fop = &squashfs_dir_ops;
++ i->i_mode |= S_IFDIR;
++ SQUASHFS_I(i)->start_block = inodep->start_block;
++ SQUASHFS_I(i)->offset = inodep->offset;
++ SQUASHFS_I(i)->u.s2.directory_index_count = 0;
++ SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode;
++
++ TRACE("Directory inode %x:%x, start_block %x, offset "
++ "%x\n", SQUASHFS_INODE_BLK(inode),
++ offset, inodep->start_block,
++ inodep->offset);
++ break;
++ }
++ case SQUASHFS_LDIR_TYPE: {
++ struct squashfs_ldir_inode_header *inodep = &id.ldir;
++ struct squashfs_ldir_inode_header *sinodep = &sid.ldir;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_LDIR_INODE_HEADER(inodep,
++ sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ if((i = squashfs_new_inode(s, inodeb)) == NULL)
++ goto failed_read1;
++
++ i->i_nlink = inodep->nlink;
++ i->i_size = inodep->file_size;
++ i->i_op = &squashfs_dir_inode_ops;
++ i->i_fop = &squashfs_dir_ops;
++ i->i_mode |= S_IFDIR;
++ SQUASHFS_I(i)->start_block = inodep->start_block;
++ SQUASHFS_I(i)->offset = inodep->offset;
++ SQUASHFS_I(i)->u.s2.directory_index_start = next_block;
++ SQUASHFS_I(i)->u.s2.directory_index_offset =
++ next_offset;
++ SQUASHFS_I(i)->u.s2.directory_index_count =
++ inodep->i_count;
++ SQUASHFS_I(i)->u.s2.parent_inode = inodep->parent_inode;
++
++ TRACE("Long directory inode %x:%x, start_block %x, "
++ "offset %x\n",
++ SQUASHFS_INODE_BLK(inode), offset,
++ inodep->start_block, inodep->offset);
++ break;
++ }
++ case SQUASHFS_SYMLINK_TYPE: {
++ struct squashfs_symlink_inode_header *inodep =
++ &id.symlink;
++ struct squashfs_symlink_inode_header *sinodep =
++ &sid.symlink;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_SYMLINK_INODE_HEADER(inodep,
++ sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ if((i = squashfs_new_inode(s, inodeb)) == NULL)
++ goto failed_read1;
++
++ i->i_nlink = inodep->nlink;
++ i->i_size = inodep->symlink_size;
++ i->i_op = &page_symlink_inode_operations;
++ i->i_data.a_ops = &squashfs_symlink_aops;
++ i->i_mode |= S_IFLNK;
++ SQUASHFS_I(i)->start_block = next_block;
++ SQUASHFS_I(i)->offset = next_offset;
++
++ TRACE("Symbolic link inode %x:%x, start_block %llx, "
++ "offset %x\n",
++ SQUASHFS_INODE_BLK(inode), offset,
++ next_block, next_offset);
++ break;
++ }
++ case SQUASHFS_BLKDEV_TYPE:
++ case SQUASHFS_CHRDEV_TYPE: {
++ struct squashfs_dev_inode_header *inodep = &id.dev;
++ struct squashfs_dev_inode_header *sinodep = &sid.dev;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_DEV_INODE_HEADER(inodep, sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ if ((i = squashfs_new_inode(s, inodeb)) == NULL)
++ goto failed_read1;
++
++ i->i_nlink = inodep->nlink;
++ i->i_mode |= (inodeb->inode_type ==
++ SQUASHFS_CHRDEV_TYPE) ? S_IFCHR :
++ S_IFBLK;
++ init_special_inode(i, i->i_mode,
++ old_decode_dev(inodep->rdev));
++
++ TRACE("Device inode %x:%x, rdev %x\n",
++ SQUASHFS_INODE_BLK(inode), offset,
++ inodep->rdev);
++ break;
++ }
++ case SQUASHFS_FIFO_TYPE:
++ case SQUASHFS_SOCKET_TYPE: {
++ struct squashfs_ipc_inode_header *inodep = &id.ipc;
++ struct squashfs_ipc_inode_header *sinodep = &sid.ipc;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_IPC_INODE_HEADER(inodep, sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ if ((i = squashfs_new_inode(s, inodeb)) == NULL)
++ goto failed_read1;
++
++ i->i_nlink = inodep->nlink;
++ i->i_mode |= (inodeb->inode_type == SQUASHFS_FIFO_TYPE)
++ ? S_IFIFO : S_IFSOCK;
++ init_special_inode(i, i->i_mode, 0);
++ break;
++ }
++ default:
++ ERROR("Unknown inode type %d in squashfs_iget!\n",
++ inodeb->inode_type);
++ goto failed_read1;
++ }
++
++ insert_inode_hash(i);
++ return i;
++
++failed_read:
++ ERROR("Unable to read inode [%llx:%x]\n", block, offset);
++
++failed_read1:
++ return NULL;
++}
++
++
++static int read_fragment_index_table(struct super_block *s)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++
++ /* Allocate fragment index table */
++ if (!(msblk->fragment_index = kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES
++ (sblk->fragments), GFP_KERNEL))) {
++ ERROR("Failed to allocate uid/gid table\n");
++ return 0;
++ }
++
++ if (SQUASHFS_FRAGMENT_INDEX_BYTES(sblk->fragments) &&
++ !squashfs_read_data(s, (char *)
++ msblk->fragment_index,
++ sblk->fragment_table_start,
++ SQUASHFS_FRAGMENT_INDEX_BYTES
++ (sblk->fragments) |
++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
++ ERROR("unable to read fragment index table\n");
++ return 0;
++ }
++
++ if (msblk->swap) {
++ int i;
++ long long fragment;
++
++ for (i = 0; i < SQUASHFS_FRAGMENT_INDEXES(sblk->fragments);
++ i++) {
++ SQUASHFS_SWAP_FRAGMENT_INDEXES((&fragment),
++ &msblk->fragment_index[i], 1);
++ msblk->fragment_index[i] = fragment;
++ }
++ }
++
++ return 1;
++}
++
++
++static int supported_squashfs_filesystem(struct squashfs_sb_info *msblk, int silent)
++{
++ struct squashfs_super_block *sblk = &msblk->sblk;
++
++ msblk->iget = squashfs_iget;
++ msblk->read_blocklist = read_blocklist;
++ msblk->read_fragment_index_table = read_fragment_index_table;
++
++ if (sblk->s_major == 1) {
++ if (!squashfs_1_0_supported(msblk)) {
++ SERROR("Major/Minor mismatch, Squashfs 1.0 filesystems "
++ "are unsupported\n");
++ SERROR("Please recompile with "
++ "Squashfs 1.0 support enabled\n");
++ return 0;
++ }
++ } else if (sblk->s_major == 2) {
++ if (!squashfs_2_0_supported(msblk)) {
++ SERROR("Major/Minor mismatch, Squashfs 2.0 filesystems "
++ "are unsupported\n");
++ SERROR("Please recompile with "
++ "Squashfs 2.0 support enabled\n");
++ return 0;
++ }
++ } else if(sblk->s_major != SQUASHFS_MAJOR || sblk->s_minor >
++ SQUASHFS_MINOR) {
++ SERROR("Major/Minor mismatch, trying to mount newer %d.%d "
++ "filesystem\n", sblk->s_major, sblk->s_minor);
++ SERROR("Please update your kernel\n");
++ return 0;
++ }
++
++ return 1;
++}
++
++
++static int squashfs_fill_super(struct super_block *s, void *data, int silent)
++{
++ struct squashfs_sb_info *msblk;
++ struct squashfs_super_block *sblk;
++ int i;
++ char b[BDEVNAME_SIZE];
++ struct inode *root;
++
++ TRACE("Entered squashfs_read_superblock\n");
++
++ if (!(s->s_fs_info = kmalloc(sizeof(struct squashfs_sb_info),
++ GFP_KERNEL))) {
++ ERROR("Failed to allocate superblock\n");
++ goto failure;
++ }
++ memset(s->s_fs_info, 0, sizeof(struct squashfs_sb_info));
++ msblk = s->s_fs_info;
++ sblk = &msblk->sblk;
++
++ msblk->devblksize = sb_min_blocksize(s, BLOCK_SIZE);
++ msblk->devblksize_log2 = ffz(~msblk->devblksize);
++
++ init_MUTEX(&msblk->read_data_mutex);
++ init_MUTEX(&msblk->read_page_mutex);
++ init_MUTEX(&msblk->block_cache_mutex);
++ init_MUTEX(&msblk->fragment_mutex);
++ init_MUTEX(&msblk->meta_index_mutex);
++
++ init_waitqueue_head(&msblk->waitq);
++ init_waitqueue_head(&msblk->fragment_wait_queue);
++
++ if (!squashfs_read_data(s, (char *) sblk, SQUASHFS_START,
++ sizeof(struct squashfs_super_block) |
++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
++ SERROR("unable to read superblock\n");
++ goto failed_mount;
++ }
++
++ /* Check it is a SQUASHFS superblock */
++ msblk->swap = 0;
++ if ((s->s_magic = sblk->s_magic) != SQUASHFS_MAGIC) {
++ if (sblk->s_magic == SQUASHFS_MAGIC_SWAP) {
++ struct squashfs_super_block ssblk;
++
++ WARNING("Mounting a different endian SQUASHFS "
++ "filesystem on %s\n", bdevname(s->s_bdev, b));
++
++ SQUASHFS_SWAP_SUPER_BLOCK(&ssblk, sblk);
++ memcpy(sblk, &ssblk, sizeof(struct squashfs_super_block));
++ msblk->swap = 1;
++ } else {
++ SERROR("Can't find a SQUASHFS superblock on %s\n",
++ bdevname(s->s_bdev, b));
++ goto failed_mount;
++ }
++ }
++
++ /* Check the MAJOR & MINOR versions */
++ if(!supported_squashfs_filesystem(msblk, silent))
++ goto failed_mount;
++
++ TRACE("Found valid superblock on %s\n", bdevname(s->s_bdev, b));
++ TRACE("Inodes are %scompressed\n",
++ SQUASHFS_UNCOMPRESSED_INODES
++ (sblk->flags) ? "un" : "");
++ TRACE("Data is %scompressed\n",
++ SQUASHFS_UNCOMPRESSED_DATA(sblk->flags)
++ ? "un" : "");
++ TRACE("Check data is %s present in the filesystem\n",
++ SQUASHFS_CHECK_DATA(sblk->flags) ?
++ "" : "not");
++ TRACE("Filesystem size %lld bytes\n", sblk->bytes_used);
++ TRACE("Block size %d\n", sblk->block_size);
++ TRACE("Number of inodes %d\n", sblk->inodes);
++ if (sblk->s_major > 1)
++ TRACE("Number of fragments %d\n", sblk->fragments);
++ TRACE("Number of uids %d\n", sblk->no_uids);
++ TRACE("Number of gids %d\n", sblk->no_guids);
++ TRACE("sblk->inode_table_start %llx\n", sblk->inode_table_start);
++ TRACE("sblk->directory_table_start %llx\n", sblk->directory_table_start);
++ if (sblk->s_major > 1)
++ TRACE("sblk->fragment_table_start %llx\n",
++ sblk->fragment_table_start);
++ TRACE("sblk->uid_start %llx\n", sblk->uid_start);
++
++ s->s_flags |= MS_RDONLY;
++ s->s_op = &squashfs_ops;
++
++ /* Init inode_table block pointer array */
++ if (!(msblk->block_cache = kmalloc(sizeof(struct squashfs_cache) *
++ SQUASHFS_CACHED_BLKS, GFP_KERNEL))) {
++ ERROR("Failed to allocate block cache\n");
++ goto failed_mount;
++ }
++
++ for (i = 0; i < SQUASHFS_CACHED_BLKS; i++)
++ msblk->block_cache[i].block = SQUASHFS_INVALID_BLK;
++
++ msblk->next_cache = 0;
++
++ /* Allocate read_data block */
++ msblk->read_size = (sblk->block_size < SQUASHFS_METADATA_SIZE) ?
++ SQUASHFS_METADATA_SIZE :
++ sblk->block_size;
++
++ if (!(msblk->read_data = kmalloc(msblk->read_size, GFP_KERNEL))) {
++ ERROR("Failed to allocate read_data block\n");
++ goto failed_mount;
++ }
++
++ /* Allocate read_page block */
++ if (!(msblk->read_page = kmalloc(sblk->block_size, GFP_KERNEL))) {
++ ERROR("Failed to allocate read_page block\n");
++ goto failed_mount;
++ }
++
++ /* Allocate uid and gid tables */
++ if (!(msblk->uid = kmalloc((sblk->no_uids + sblk->no_guids) *
++ sizeof(unsigned int), GFP_KERNEL))) {
++ ERROR("Failed to allocate uid/gid table\n");
++ goto failed_mount;
++ }
++ msblk->guid = msblk->uid + sblk->no_uids;
++
++ if (msblk->swap) {
++ unsigned int suid[sblk->no_uids + sblk->no_guids];
++
++ if (!squashfs_read_data(s, (char *) &suid, sblk->uid_start,
++ ((sblk->no_uids + sblk->no_guids) *
++ sizeof(unsigned int)) |
++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
++ ERROR("unable to read uid/gid table\n");
++ goto failed_mount;
++ }
++
++ SQUASHFS_SWAP_DATA(msblk->uid, suid, (sblk->no_uids +
++ sblk->no_guids), (sizeof(unsigned int) * 8));
++ } else
++ if (!squashfs_read_data(s, (char *) msblk->uid, sblk->uid_start,
++ ((sblk->no_uids + sblk->no_guids) *
++ sizeof(unsigned int)) |
++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
++ ERROR("unable to read uid/gid table\n");
++ goto failed_mount;
++ }
++
++
++ if (sblk->s_major == 1 && squashfs_1_0_supported(msblk))
++ goto allocate_root;
++
++ if (!(msblk->fragment = kmalloc(sizeof(struct squashfs_fragment_cache) *
++ SQUASHFS_CACHED_FRAGMENTS, GFP_KERNEL))) {
++ ERROR("Failed to allocate fragment block cache\n");
++ goto failed_mount;
++ }
++
++ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++) {
++ msblk->fragment[i].locked = 0;
++ msblk->fragment[i].block = SQUASHFS_INVALID_BLK;
++ msblk->fragment[i].data = NULL;
++ }
++
++ msblk->next_fragment = 0;
++
++ /* Allocate fragment index table */
++ if (msblk->read_fragment_index_table(s) == 0)
++ goto failed_mount;
++
++allocate_root:
++ if ((root = (msblk->iget)(s, sblk->root_inode)) == NULL)
++ goto failed_mount;
++
++ if ((s->s_root = d_alloc_root(root)) == NULL) {
++ ERROR("Root inode create failed\n");
++ iput(root);
++ goto failed_mount;
++ }
++
++ TRACE("Leaving squashfs_read_super\n");
++ return 0;
++
++failed_mount:
++ kfree(msblk->fragment_index);
++ kfree(msblk->fragment);
++ kfree(msblk->uid);
++ kfree(msblk->read_page);
++ kfree(msblk->read_data);
++ kfree(msblk->block_cache);
++ kfree(msblk->fragment_index_2);
++ kfree(s->s_fs_info);
++ s->s_fs_info = NULL;
++ return -EINVAL;
++
++failure:
++ return -ENOMEM;
++}
++
++
++static int squashfs_statfs(struct dentry *dentry, struct kstatfs *buf)
++{
++ struct squashfs_sb_info *msblk = dentry->d_inode->i_sb->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++
++ TRACE("Entered squashfs_statfs\n");
++
++ buf->f_type = SQUASHFS_MAGIC;
++ buf->f_bsize = sblk->block_size;
++ buf->f_blocks = ((sblk->bytes_used - 1) >> sblk->block_log) + 1;
++ buf->f_bfree = buf->f_bavail = 0;
++ buf->f_files = sblk->inodes;
++ buf->f_ffree = 0;
++ buf->f_namelen = SQUASHFS_NAME_LEN;
++
++ return 0;
++}
++
++
++static int squashfs_symlink_readpage(struct file *file, struct page *page)
++{
++ struct inode *inode = page->mapping->host;
++ int index = page->index << PAGE_CACHE_SHIFT, length, bytes;
++ long long block = SQUASHFS_I(inode)->start_block;
++ int offset = SQUASHFS_I(inode)->offset;
++ void *pageaddr = kmap(page);
++
++ TRACE("Entered squashfs_symlink_readpage, page index %ld, start block "
++ "%llx, offset %x\n", page->index,
++ SQUASHFS_I(inode)->start_block,
++ SQUASHFS_I(inode)->offset);
++
++ for (length = 0; length < index; length += bytes) {
++ if (!(bytes = squashfs_get_cached_block(inode->i_sb, NULL,
++ block, offset, PAGE_CACHE_SIZE, &block,
++ &offset))) {
++ ERROR("Unable to read symbolic link [%llx:%x]\n", block,
++ offset);
++ goto skip_read;
++ }
++ }
++
++ if (length != index) {
++ ERROR("(squashfs_symlink_readpage) length != index\n");
++ bytes = 0;
++ goto skip_read;
++ }
++
++ bytes = (i_size_read(inode) - length) > PAGE_CACHE_SIZE ? PAGE_CACHE_SIZE :
++ i_size_read(inode) - length;
++
++ if (!(bytes = squashfs_get_cached_block(inode->i_sb, pageaddr, block,
++ offset, bytes, &block, &offset)))
++ ERROR("Unable to read symbolic link [%llx:%x]\n", block, offset);
++
++skip_read:
++ memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
++ kunmap(page);
++ SetPageUptodate(page);
++ unlock_page(page);
++
++ return 0;
++}
++
++
++struct meta_index *locate_meta_index(struct inode *inode, int index, int offset)
++{
++ struct meta_index *meta = NULL;
++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
++ int i;
++
++ down(&msblk->meta_index_mutex);
++
++ TRACE("locate_meta_index: index %d, offset %d\n", index, offset);
++
++ if(msblk->meta_index == NULL)
++ goto not_allocated;
++
++ for (i = 0; i < SQUASHFS_META_NUMBER; i ++)
++ if (msblk->meta_index[i].inode_number == inode->i_ino &&
++ msblk->meta_index[i].offset >= offset &&
++ msblk->meta_index[i].offset <= index &&
++ msblk->meta_index[i].locked == 0) {
++ TRACE("locate_meta_index: entry %d, offset %d\n", i,
++ msblk->meta_index[i].offset);
++ meta = &msblk->meta_index[i];
++ offset = meta->offset;
++ }
++
++ if (meta)
++ meta->locked = 1;
++
++not_allocated:
++ up(&msblk->meta_index_mutex);
++
++ return meta;
++}
++
++
++struct meta_index *empty_meta_index(struct inode *inode, int offset, int skip)
++{
++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
++ struct meta_index *meta = NULL;
++ int i;
++
++ down(&msblk->meta_index_mutex);
++
++ TRACE("empty_meta_index: offset %d, skip %d\n", offset, skip);
++
++ if(msblk->meta_index == NULL) {
++ if (!(msblk->meta_index = kmalloc(sizeof(struct meta_index) *
++ SQUASHFS_META_NUMBER, GFP_KERNEL))) {
++ ERROR("Failed to allocate meta_index\n");
++ goto failed;
++ }
++ for(i = 0; i < SQUASHFS_META_NUMBER; i++) {
++ msblk->meta_index[i].inode_number = 0;
++ msblk->meta_index[i].locked = 0;
++ }
++ msblk->next_meta_index = 0;
++ }
++
++ for(i = SQUASHFS_META_NUMBER; i &&
++ msblk->meta_index[msblk->next_meta_index].locked; i --)
++ msblk->next_meta_index = (msblk->next_meta_index + 1) %
++ SQUASHFS_META_NUMBER;
++
++ if(i == 0) {
++ TRACE("empty_meta_index: failed!\n");
++ goto failed;
++ }
++
++ TRACE("empty_meta_index: returned meta entry %d, %p\n",
++ msblk->next_meta_index,
++ &msblk->meta_index[msblk->next_meta_index]);
++
++ meta = &msblk->meta_index[msblk->next_meta_index];
++ msblk->next_meta_index = (msblk->next_meta_index + 1) %
++ SQUASHFS_META_NUMBER;
++
++ meta->inode_number = inode->i_ino;
++ meta->offset = offset;
++ meta->skip = skip;
++ meta->entries = 0;
++ meta->locked = 1;
++
++failed:
++ up(&msblk->meta_index_mutex);
++ return meta;
++}
++
++
++void release_meta_index(struct inode *inode, struct meta_index *meta)
++{
++ meta->locked = 0;
++}
++
++
++static int read_block_index(struct super_block *s, int blocks, char *block_list,
++ long long *start_block, int *offset)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ unsigned int *block_listp;
++ int block = 0;
++
++ if (msblk->swap) {
++ char sblock_list[blocks << 2];
++
++ if (!squashfs_get_cached_block(s, sblock_list, *start_block,
++ *offset, blocks << 2, start_block, offset)) {
++ ERROR("Unable to read block list [%llx:%x]\n",
++ *start_block, *offset);
++ goto failure;
++ }
++ SQUASHFS_SWAP_INTS(((unsigned int *)block_list),
++ ((unsigned int *)sblock_list), blocks);
++ } else
++ if (!squashfs_get_cached_block(s, block_list, *start_block,
++ *offset, blocks << 2, start_block, offset)) {
++ ERROR("Unable to read block list [%llx:%x]\n",
++ *start_block, *offset);
++ goto failure;
++ }
++
++ for (block_listp = (unsigned int *) block_list; blocks;
++ block_listp++, blocks --)
++ block += SQUASHFS_COMPRESSED_SIZE_BLOCK(*block_listp);
++
++ return block;
++
++failure:
++ return -1;
++}
++
++
++#define SIZE 256
++
++static inline int calculate_skip(int blocks) {
++ int skip = (blocks - 1) / ((SQUASHFS_SLOTS * SQUASHFS_META_ENTRIES + 1) * SQUASHFS_META_INDEXES);
++ return skip >= 7 ? 7 : skip + 1;
++}
++
++
++static int get_meta_index(struct inode *inode, int index,
++ long long *index_block, int *index_offset,
++ long long *data_block, char *block_list)
++{
++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ int skip = calculate_skip(i_size_read(inode) >> sblk->block_log);
++ int offset = 0;
++ struct meta_index *meta;
++ struct meta_entry *meta_entry;
++ long long cur_index_block = SQUASHFS_I(inode)->u.s1.block_list_start;
++ int cur_offset = SQUASHFS_I(inode)->offset;
++ long long cur_data_block = SQUASHFS_I(inode)->start_block;
++ int i;
++
++ index /= SQUASHFS_META_INDEXES * skip;
++
++ while ( offset < index ) {
++ meta = locate_meta_index(inode, index, offset + 1);
++
++ if (meta == NULL) {
++ if ((meta = empty_meta_index(inode, offset + 1,
++ skip)) == NULL)
++ goto all_done;
++ } else {
++ offset = index < meta->offset + meta->entries ? index :
++ meta->offset + meta->entries - 1;
++ meta_entry = &meta->meta_entry[offset - meta->offset];
++ cur_index_block = meta_entry->index_block + sblk->inode_table_start;
++ cur_offset = meta_entry->offset;
++ cur_data_block = meta_entry->data_block;
++ TRACE("get_meta_index: offset %d, meta->offset %d, "
++ "meta->entries %d\n", offset, meta->offset,
++ meta->entries);
++ TRACE("get_meta_index: index_block 0x%llx, offset 0x%x"
++ " data_block 0x%llx\n", cur_index_block,
++ cur_offset, cur_data_block);
++ }
++
++ for (i = meta->offset + meta->entries; i <= index &&
++ i < meta->offset + SQUASHFS_META_ENTRIES; i++) {
++ int blocks = skip * SQUASHFS_META_INDEXES;
++
++ while (blocks) {
++ int block = blocks > (SIZE >> 2) ? (SIZE >> 2) :
++ blocks;
++ int res = read_block_index(inode->i_sb, block,
++ block_list, &cur_index_block,
++ &cur_offset);
++
++ if (res == -1)
++ goto failed;
++
++ cur_data_block += res;
++ blocks -= block;
++ }
++
++ meta_entry = &meta->meta_entry[i - meta->offset];
++ meta_entry->index_block = cur_index_block - sblk->inode_table_start;
++ meta_entry->offset = cur_offset;
++ meta_entry->data_block = cur_data_block;
++ meta->entries ++;
++ offset ++;
++ }
++
++ TRACE("get_meta_index: meta->offset %d, meta->entries %d\n",
++ meta->offset, meta->entries);
++
++ release_meta_index(inode, meta);
++ }
++
++all_done:
++ *index_block = cur_index_block;
++ *index_offset = cur_offset;
++ *data_block = cur_data_block;
++
++ return offset * SQUASHFS_META_INDEXES * skip;
++
++failed:
++ release_meta_index(inode, meta);
++ return -1;
++}
++
++
++static long long read_blocklist(struct inode *inode, int index,
++ int readahead_blks, char *block_list,
++ unsigned short **block_p, unsigned int *bsize)
++{
++ long long block_ptr;
++ int offset;
++ long long block;
++ int res = get_meta_index(inode, index, &block_ptr, &offset, &block,
++ block_list);
++
++ TRACE("read_blocklist: res %d, index %d, block_ptr 0x%llx, offset"
++ " 0x%x, block 0x%llx\n", res, index, block_ptr, offset,
++ block);
++
++ if(res == -1)
++ goto failure;
++
++ index -= res;
++
++ while ( index ) {
++ int blocks = index > (SIZE >> 2) ? (SIZE >> 2) : index;
++ int res = read_block_index(inode->i_sb, blocks, block_list,
++ &block_ptr, &offset);
++ if (res == -1)
++ goto failure;
++ block += res;
++ index -= blocks;
++ }
++
++ if (read_block_index(inode->i_sb, 1, block_list,
++ &block_ptr, &offset) == -1)
++ goto failure;
++ *bsize = *((unsigned int *) block_list);
++
++ return block;
++
++failure:
++ return 0;
++}
++
++
++static int squashfs_readpage(struct file *file, struct page *page)
++{
++ struct inode *inode = page->mapping->host;
++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ unsigned char block_list[SIZE];
++ long long block;
++ unsigned int bsize, i = 0, bytes = 0, byte_offset = 0;
++ int index = page->index >> (sblk->block_log - PAGE_CACHE_SHIFT);
++ void *pageaddr;
++ struct squashfs_fragment_cache *fragment = NULL;
++ char *data_ptr = msblk->read_page;
++
++ int mask = (1 << (sblk->block_log - PAGE_CACHE_SHIFT)) - 1;
++ int start_index = page->index & ~mask;
++ int end_index = start_index | mask;
++
++ TRACE("Entered squashfs_readpage, page index %lx, start block %llx\n",
++ page->index,
++ SQUASHFS_I(inode)->start_block);
++
++ if (page->index >= ((i_size_read(inode) + PAGE_CACHE_SIZE - 1) >>
++ PAGE_CACHE_SHIFT))
++ goto skip_read;
++
++ if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK
++ || index < (i_size_read(inode) >>
++ sblk->block_log)) {
++ if ((block = (msblk->read_blocklist)(inode, index, 1,
++ block_list, NULL, &bsize)) == 0)
++ goto skip_read;
++
++ down(&msblk->read_page_mutex);
++
++ if (!(bytes = squashfs_read_data(inode->i_sb, msblk->read_page,
++ block, bsize, NULL))) {
++ ERROR("Unable to read page, block %llx, size %x\n", block,
++ bsize);
++ up(&msblk->read_page_mutex);
++ goto skip_read;
++ }
++ } else {
++ if ((fragment = get_cached_fragment(inode->i_sb,
++ SQUASHFS_I(inode)->
++ u.s1.fragment_start_block,
++ SQUASHFS_I(inode)->u.s1.fragment_size))
++ == NULL) {
++ ERROR("Unable to read page, block %llx, size %x\n",
++ SQUASHFS_I(inode)->
++ u.s1.fragment_start_block,
++ (int) SQUASHFS_I(inode)->
++ u.s1.fragment_size);
++ goto skip_read;
++ }
++ bytes = SQUASHFS_I(inode)->u.s1.fragment_offset +
++ (i_size_read(inode) & (sblk->block_size
++ - 1));
++ byte_offset = SQUASHFS_I(inode)->u.s1.fragment_offset;
++ data_ptr = fragment->data;
++ }
++
++ for (i = start_index; i <= end_index && byte_offset < bytes;
++ i++, byte_offset += PAGE_CACHE_SIZE) {
++ struct page *push_page;
++ int available_bytes = (bytes - byte_offset) > PAGE_CACHE_SIZE ?
++ PAGE_CACHE_SIZE : bytes - byte_offset;
++
++ TRACE("bytes %d, i %d, byte_offset %d, available_bytes %d\n",
++ bytes, i, byte_offset, available_bytes);
++
++ if (i == page->index) {
++ pageaddr = kmap_atomic(page, KM_USER0);
++ memcpy(pageaddr, data_ptr + byte_offset,
++ available_bytes);
++ memset(pageaddr + available_bytes, 0,
++ PAGE_CACHE_SIZE - available_bytes);
++ kunmap_atomic(pageaddr, KM_USER0);
++ flush_dcache_page(page);
++ SetPageUptodate(page);
++ unlock_page(page);
++ } else if ((push_page =
++ grab_cache_page_nowait(page->mapping, i))) {
++ pageaddr = kmap_atomic(push_page, KM_USER0);
++
++ memcpy(pageaddr, data_ptr + byte_offset,
++ available_bytes);
++ memset(pageaddr + available_bytes, 0,
++ PAGE_CACHE_SIZE - available_bytes);
++ kunmap_atomic(pageaddr, KM_USER0);
++ flush_dcache_page(push_page);
++ SetPageUptodate(push_page);
++ unlock_page(push_page);
++ page_cache_release(push_page);
++ }
++ }
++
++ if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK
++ || index < (i_size_read(inode) >>
++ sblk->block_log))
++ up(&msblk->read_page_mutex);
++ else
++ release_cached_fragment(msblk, fragment);
++
++ return 0;
++
++skip_read:
++ pageaddr = kmap_atomic(page, KM_USER0);
++ memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
++ kunmap_atomic(pageaddr, KM_USER0);
++ flush_dcache_page(page);
++ SetPageUptodate(page);
++ unlock_page(page);
++
++ return 0;
++}
++
++
++static int squashfs_readpage4K(struct file *file, struct page *page)
++{
++ struct inode *inode = page->mapping->host;
++ struct squashfs_sb_info *msblk = inode->i_sb->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ unsigned char block_list[SIZE];
++ long long block;
++ unsigned int bsize, bytes = 0;
++ void *pageaddr;
++
++ TRACE("Entered squashfs_readpage4K, page index %lx, start block %llx\n",
++ page->index,
++ SQUASHFS_I(inode)->start_block);
++
++ if (page->index >= ((i_size_read(inode) + PAGE_CACHE_SIZE - 1) >>
++ PAGE_CACHE_SHIFT)) {
++ pageaddr = kmap_atomic(page, KM_USER0);
++ goto skip_read;
++ }
++
++ if (SQUASHFS_I(inode)->u.s1.fragment_start_block == SQUASHFS_INVALID_BLK
++ || page->index < (i_size_read(inode) >>
++ sblk->block_log)) {
++ block = (msblk->read_blocklist)(inode, page->index, 1,
++ block_list, NULL, &bsize);
++
++ down(&msblk->read_page_mutex);
++ bytes = squashfs_read_data(inode->i_sb, msblk->read_page, block,
++ bsize, NULL);
++ pageaddr = kmap_atomic(page, KM_USER0);
++ if (bytes)
++ memcpy(pageaddr, msblk->read_page, bytes);
++ else
++ ERROR("Unable to read page, block %llx, size %x\n",
++ block, bsize);
++ up(&msblk->read_page_mutex);
++ } else {
++ struct squashfs_fragment_cache *fragment =
++ get_cached_fragment(inode->i_sb,
++ SQUASHFS_I(inode)->
++ u.s1.fragment_start_block,
++ SQUASHFS_I(inode)-> u.s1.fragment_size);
++ pageaddr = kmap_atomic(page, KM_USER0);
++ if (fragment) {
++ bytes = i_size_read(inode) & (sblk->block_size - 1);
++ memcpy(pageaddr, fragment->data + SQUASHFS_I(inode)->
++ u.s1.fragment_offset, bytes);
++ release_cached_fragment(msblk, fragment);
++ } else
++ ERROR("Unable to read page, block %llx, size %x\n",
++ SQUASHFS_I(inode)->
++ u.s1.fragment_start_block, (int)
++ SQUASHFS_I(inode)-> u.s1.fragment_size);
++ }
++
++skip_read:
++ memset(pageaddr + bytes, 0, PAGE_CACHE_SIZE - bytes);
++ kunmap_atomic(pageaddr, KM_USER0);
++ flush_dcache_page(page);
++ SetPageUptodate(page);
++ unlock_page(page);
++
++ return 0;
++}
++
++
++static int get_dir_index_using_offset(struct super_block *s, long long
++ *next_block, unsigned int *next_offset,
++ long long index_start,
++ unsigned int index_offset, int i_count,
++ long long f_pos)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ int i, length = 0;
++ struct squashfs_dir_index index;
++
++ TRACE("Entered get_dir_index_using_offset, i_count %d, f_pos %d\n",
++ i_count, (unsigned int) f_pos);
++
++ f_pos =- 3;
++ if (f_pos == 0)
++ goto finish;
++
++ for (i = 0; i < i_count; i++) {
++ if (msblk->swap) {
++ struct squashfs_dir_index sindex;
++ squashfs_get_cached_block(s, (char *) &sindex,
++ index_start, index_offset,
++ sizeof(sindex), &index_start,
++ &index_offset);
++ SQUASHFS_SWAP_DIR_INDEX(&index, &sindex);
++ } else
++ squashfs_get_cached_block(s, (char *) &index,
++ index_start, index_offset,
++ sizeof(index), &index_start,
++ &index_offset);
++
++ if (index.index > f_pos)
++ break;
++
++ squashfs_get_cached_block(s, NULL, index_start, index_offset,
++ index.size + 1, &index_start,
++ &index_offset);
++
++ length = index.index;
++ *next_block = index.start_block + sblk->directory_table_start;
++ }
++
++ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE;
++
++finish:
++ return length + 3;
++}
++
++
++static int get_dir_index_using_name(struct super_block *s, long long
++ *next_block, unsigned int *next_offset,
++ long long index_start,
++ unsigned int index_offset, int i_count,
++ const char *name, int size)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ int i, length = 0;
++ char buffer[sizeof(struct squashfs_dir_index) + SQUASHFS_NAME_LEN + 1];
++ struct squashfs_dir_index *index = (struct squashfs_dir_index *) buffer;
++ char str[SQUASHFS_NAME_LEN + 1];
++
++ TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count);
++
++ strncpy(str, name, size);
++ str[size] = '\0';
++
++ for (i = 0; i < i_count; i++) {
++ if (msblk->swap) {
++ struct squashfs_dir_index sindex;
++ squashfs_get_cached_block(s, (char *) &sindex,
++ index_start, index_offset,
++ sizeof(sindex), &index_start,
++ &index_offset);
++ SQUASHFS_SWAP_DIR_INDEX(index, &sindex);
++ } else
++ squashfs_get_cached_block(s, (char *) index,
++ index_start, index_offset,
++ sizeof(struct squashfs_dir_index),
++ &index_start, &index_offset);
++
++ squashfs_get_cached_block(s, index->name, index_start,
++ index_offset, index->size + 1,
++ &index_start, &index_offset);
++
++ index->name[index->size + 1] = '\0';
++
++ if (strcmp(index->name, str) > 0)
++ break;
++
++ length = index->index;
++ *next_block = index->start_block + sblk->directory_table_start;
++ }
++
++ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE;
++ return length + 3;
++}
++
++
++static int squashfs_readdir(struct file *file, void *dirent, filldir_t filldir)
++{
++ struct inode *i = file->f_dentry->d_inode;
++ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ long long next_block = SQUASHFS_I(i)->start_block +
++ sblk->directory_table_start;
++ int next_offset = SQUASHFS_I(i)->offset, length = 0, dirs_read = 0,
++ dir_count;
++ struct squashfs_dir_header dirh;
++ char buffer[sizeof(struct squashfs_dir_entry) + SQUASHFS_NAME_LEN + 1];
++ struct squashfs_dir_entry *dire = (struct squashfs_dir_entry *) buffer;
++
++ TRACE("Entered squashfs_readdir [%llx:%x]\n", next_block, next_offset);
++
++ while(file->f_pos < 3) {
++ char *name;
++ int size, i_ino;
++
++ if(file->f_pos == 0) {
++ name = ".";
++ size = 1;
++ i_ino = i->i_ino;
++ } else {
++ name = "..";
++ size = 2;
++ i_ino = SQUASHFS_I(i)->u.s2.parent_inode;
++ }
++ TRACE("Calling filldir(%x, %s, %d, %d, %d, %d)\n",
++ (unsigned int) dirent, name, size, (int)
++ file->f_pos, i_ino,
++ squashfs_filetype_table[1]);
++
++ if (filldir(dirent, name, size,
++ file->f_pos, i_ino,
++ squashfs_filetype_table[1]) < 0) {
++ TRACE("Filldir returned less than 0\n");
++ goto finish;
++ }
++ file->f_pos += size;
++ dirs_read++;
++ }
++
++ length = get_dir_index_using_offset(i->i_sb, &next_block, &next_offset,
++ SQUASHFS_I(i)->u.s2.directory_index_start,
++ SQUASHFS_I(i)->u.s2.directory_index_offset,
++ SQUASHFS_I(i)->u.s2.directory_index_count,
++ file->f_pos);
++
++ while (length < i_size_read(i)) {
++ /* read directory header */
++ if (msblk->swap) {
++ struct squashfs_dir_header sdirh;
++
++ if (!squashfs_get_cached_block(i->i_sb, (char *) &sdirh,
++ next_block, next_offset, sizeof(sdirh),
++ &next_block, &next_offset))
++ goto failed_read;
++
++ length += sizeof(sdirh);
++ SQUASHFS_SWAP_DIR_HEADER(&dirh, &sdirh);
++ } else {
++ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh,
++ next_block, next_offset, sizeof(dirh),
++ &next_block, &next_offset))
++ goto failed_read;
++
++ length += sizeof(dirh);
++ }
++
++ dir_count = dirh.count + 1;
++ while (dir_count--) {
++ if (msblk->swap) {
++ struct squashfs_dir_entry sdire;
++ if (!squashfs_get_cached_block(i->i_sb, (char *)
++ &sdire, next_block, next_offset,
++ sizeof(sdire), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ length += sizeof(sdire);
++ SQUASHFS_SWAP_DIR_ENTRY(dire, &sdire);
++ } else {
++ if (!squashfs_get_cached_block(i->i_sb, (char *)
++ dire, next_block, next_offset,
++ sizeof(*dire), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ length += sizeof(*dire);
++ }
++
++ if (!squashfs_get_cached_block(i->i_sb, dire->name,
++ next_block, next_offset,
++ dire->size + 1, &next_block,
++ &next_offset))
++ goto failed_read;
++
++ length += dire->size + 1;
++
++ if (file->f_pos >= length)
++ continue;
++
++ dire->name[dire->size + 1] = '\0';
++
++ TRACE("Calling filldir(%x, %s, %d, %d, %x:%x, %d, %d)\n",
++ (unsigned int) dirent, dire->name,
++ dire->size + 1, (int) file->f_pos,
++ dirh.start_block, dire->offset,
++ dirh.inode_number + dire->inode_number,
++ squashfs_filetype_table[dire->type]);
++
++ if (filldir(dirent, dire->name, dire->size + 1,
++ file->f_pos,
++ dirh.inode_number + dire->inode_number,
++ squashfs_filetype_table[dire->type])
++ < 0) {
++ TRACE("Filldir returned less than 0\n");
++ goto finish;
++ }
++ file->f_pos = length;
++ dirs_read++;
++ }
++ }
++
++finish:
++ return dirs_read;
++
++failed_read:
++ ERROR("Unable to read directory block [%llx:%x]\n", next_block,
++ next_offset);
++ return 0;
++}
++
++
++static struct dentry *squashfs_lookup(struct inode *i, struct dentry *dentry,
++ struct nameidata *nd)
++{
++ const unsigned char *name = dentry->d_name.name;
++ int len = dentry->d_name.len;
++ struct inode *inode = NULL;
++ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ long long next_block = SQUASHFS_I(i)->start_block +
++ sblk->directory_table_start;
++ int next_offset = SQUASHFS_I(i)->offset, length = 0,
++ dir_count;
++ struct squashfs_dir_header dirh;
++ char buffer[sizeof(struct squashfs_dir_entry) + SQUASHFS_NAME_LEN];
++ struct squashfs_dir_entry *dire = (struct squashfs_dir_entry *) buffer;
++
++ TRACE("Entered squashfs_lookup [%llx:%x]\n", next_block, next_offset);
++
++ if (len > SQUASHFS_NAME_LEN)
++ goto exit_loop;
++
++ length = get_dir_index_using_name(i->i_sb, &next_block, &next_offset,
++ SQUASHFS_I(i)->u.s2.directory_index_start,
++ SQUASHFS_I(i)->u.s2.directory_index_offset,
++ SQUASHFS_I(i)->u.s2.directory_index_count, name,
++ len);
++
++ while (length < i_size_read(i)) {
++ /* read directory header */
++ if (msblk->swap) {
++ struct squashfs_dir_header sdirh;
++ if (!squashfs_get_cached_block(i->i_sb, (char *) &sdirh,
++ next_block, next_offset, sizeof(sdirh),
++ &next_block, &next_offset))
++ goto failed_read;
++
++ length += sizeof(sdirh);
++ SQUASHFS_SWAP_DIR_HEADER(&dirh, &sdirh);
++ } else {
++ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh,
++ next_block, next_offset, sizeof(dirh),
++ &next_block, &next_offset))
++ goto failed_read;
++
++ length += sizeof(dirh);
++ }
++
++ dir_count = dirh.count + 1;
++ while (dir_count--) {
++ if (msblk->swap) {
++ struct squashfs_dir_entry sdire;
++ if (!squashfs_get_cached_block(i->i_sb, (char *)
++ &sdire, next_block,next_offset,
++ sizeof(sdire), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ length += sizeof(sdire);
++ SQUASHFS_SWAP_DIR_ENTRY(dire, &sdire);
++ } else {
++ if (!squashfs_get_cached_block(i->i_sb, (char *)
++ dire, next_block,next_offset,
++ sizeof(*dire), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ length += sizeof(*dire);
++ }
++
++ if (!squashfs_get_cached_block(i->i_sb, dire->name,
++ next_block, next_offset, dire->size + 1,
++ &next_block, &next_offset))
++ goto failed_read;
++
++ length += dire->size + 1;
++
++ if (name[0] < dire->name[0])
++ goto exit_loop;
++
++ if ((len == dire->size + 1) && !strncmp(name,
++ dire->name, len)) {
++ squashfs_inode_t ino =
++ SQUASHFS_MKINODE(dirh.start_block,
++ dire->offset);
++
++ TRACE("calling squashfs_iget for directory "
++ "entry %s, inode %x:%x, %d\n", name,
++ dirh.start_block, dire->offset,
++ dirh.inode_number + dire->inode_number);
++
++ inode = (msblk->iget)(i->i_sb, ino);
++
++ goto exit_loop;
++ }
++ }
++ }
++
++exit_loop:
++ d_add(dentry, inode);
++ return ERR_PTR(0);
++
++failed_read:
++ ERROR("Unable to read directory block [%llx:%x]\n", next_block,
++ next_offset);
++ goto exit_loop;
++}
++
++
++static void squashfs_put_super(struct super_block *s)
++{
++ int i;
++
++ if (s->s_fs_info) {
++ struct squashfs_sb_info *sbi = s->s_fs_info;
++ if (sbi->block_cache)
++ for (i = 0; i < SQUASHFS_CACHED_BLKS; i++)
++ if (sbi->block_cache[i].block !=
++ SQUASHFS_INVALID_BLK)
++ kfree(sbi->block_cache[i].data);
++ if (sbi->fragment)
++ for (i = 0; i < SQUASHFS_CACHED_FRAGMENTS; i++)
++ SQUASHFS_FREE(sbi->fragment[i].data);
++ kfree(sbi->fragment);
++ kfree(sbi->block_cache);
++ kfree(sbi->read_data);
++ kfree(sbi->read_page);
++ kfree(sbi->uid);
++ kfree(sbi->fragment_index);
++ kfree(sbi->fragment_index_2);
++ kfree(sbi->meta_index);
++ kfree(s->s_fs_info);
++ s->s_fs_info = NULL;
++ }
++}
++
++
++static int squashfs_get_sb(struct file_system_type *fs_type,
++ int flags, const char *dev_name, void *data,
++ struct vfsmount *mnt)
++{
++ return get_sb_bdev(fs_type, flags, dev_name, data, squashfs_fill_super, mnt);
++}
++
++
++static int __init init_squashfs_fs(void)
++{
++ int err = init_inodecache();
++ if (err)
++ goto out;
++
++ printk(KERN_INFO "squashfs: version 3.0 (2006/03/15) "
++ "Phillip Lougher\n");
++
++ if (!(stream.workspace = vmalloc(zlib_inflate_workspacesize()))) {
++ ERROR("Failed to allocate zlib workspace\n");
++ destroy_inodecache();
++ err = -ENOMEM;
++ goto out;
++ }
++
++ if ((err = register_filesystem(&squashfs_fs_type))) {
++ vfree(stream.workspace);
++ destroy_inodecache();
++ }
++
++out:
++ return err;
++}
++
++
++static void __exit exit_squashfs_fs(void)
++{
++ vfree(stream.workspace);
++ unregister_filesystem(&squashfs_fs_type);
++ destroy_inodecache();
++}
++
++
++static struct kmem_cache * squashfs_inode_cachep;
++
++
++static struct inode *squashfs_alloc_inode(struct super_block *sb)
++{
++ struct squashfs_inode_info *ei;
++ ei = kmem_cache_alloc(squashfs_inode_cachep, GFP_KERNEL);
++ if (!ei)
++ return NULL;
++ return &ei->vfs_inode;
++}
++
++
++static void squashfs_destroy_inode(struct inode *inode)
++{
++ kmem_cache_free(squashfs_inode_cachep, SQUASHFS_I(inode));
++}
++
++
++static void init_once(void * foo, struct kmem_cache * cachep, unsigned long flags)
++{
++ struct squashfs_inode_info *ei = foo;
++
++ inode_init_once(&ei->vfs_inode);
++}
++
++
++static int __init init_inodecache(void)
++{
++ squashfs_inode_cachep = kmem_cache_create("squashfs_inode_cache",
++ sizeof(struct squashfs_inode_info),
++ 0, SLAB_HWCACHE_ALIGN|SLAB_RECLAIM_ACCOUNT,
++ init_once);
++ if (squashfs_inode_cachep == NULL)
++ return -ENOMEM;
++ return 0;
++}
++
++
++static void destroy_inodecache(void)
++{
++ kmem_cache_destroy(squashfs_inode_cachep);
++}
++
++
++module_init(init_squashfs_fs);
++module_exit(exit_squashfs_fs);
++MODULE_DESCRIPTION("squashfs, a compressed read-only filesystem");
++MODULE_AUTHOR("Phillip Lougher <phillip@lougher.org.uk>");
++MODULE_LICENSE("GPL");
+diff -urN linux-2.6.22.4/fs/squashfs/Makefile linux-2.6.22.4-squashfs/fs/squashfs/Makefile
+--- linux-2.6.22.4/fs/squashfs/Makefile 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.22.4-squashfs/fs/squashfs/Makefile 2007-09-20 19:13:44.000000000 +0200
+@@ -0,0 +1,7 @@
++#
++# Makefile for the linux squashfs routines.
++#
++
++obj-$(CONFIG_SQUASHFS) += squashfs.o
++squashfs-y += inode.o
++squashfs-y += squashfs2_0.o
+diff -urN linux-2.6.22.4/fs/squashfs/squashfs2_0.c linux-2.6.22.4-squashfs/fs/squashfs/squashfs2_0.c
+--- linux-2.6.22.4/fs/squashfs/squashfs2_0.c 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.22.4-squashfs/fs/squashfs/squashfs2_0.c 2007-09-20 19:13:44.000000000 +0200
+@@ -0,0 +1,758 @@
++/*
++ * Squashfs - a compressed read only filesystem for Linux
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005, 2006
++ * Phillip Lougher <phillip@lougher.org.uk>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2,
++ * or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * squashfs2_0.c
++ */
++
++#include <linux/types.h>
++#include <linux/squashfs_fs.h>
++#include <linux/module.h>
++#include <linux/errno.h>
++#include <linux/slab.h>
++#include <linux/fs.h>
++#include <linux/smp_lock.h>
++#include <linux/slab.h>
++#include <linux/squashfs_fs_sb.h>
++#include <linux/squashfs_fs_i.h>
++#include <linux/buffer_head.h>
++#include <linux/vfs.h>
++#include <linux/init.h>
++#include <linux/dcache.h>
++#include <linux/wait.h>
++#include <linux/zlib.h>
++#include <linux/blkdev.h>
++#include <linux/vmalloc.h>
++#include <asm/uaccess.h>
++#include <asm/semaphore.h>
++
++#include "squashfs.h"
++static int squashfs_readdir_2(struct file *file, void *dirent, filldir_t filldir);
++static struct dentry *squashfs_lookup_2(struct inode *, struct dentry *,
++ struct nameidata *);
++
++static struct file_operations squashfs_dir_ops_2 = {
++ .read = generic_read_dir,
++ .readdir = squashfs_readdir_2
++};
++
++static struct inode_operations squashfs_dir_inode_ops_2 = {
++ .lookup = squashfs_lookup_2
++};
++
++static unsigned char squashfs_filetype_table[] = {
++ DT_UNKNOWN, DT_DIR, DT_REG, DT_LNK, DT_BLK, DT_CHR, DT_FIFO, DT_SOCK
++};
++
++static int read_fragment_index_table_2(struct super_block *s)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++
++ if (!(msblk->fragment_index_2 = kmalloc(SQUASHFS_FRAGMENT_INDEX_BYTES_2
++ (sblk->fragments), GFP_KERNEL))) {
++ ERROR("Failed to allocate uid/gid table\n");
++ return 0;
++ }
++
++ if (SQUASHFS_FRAGMENT_INDEX_BYTES_2(sblk->fragments) &&
++ !squashfs_read_data(s, (char *)
++ msblk->fragment_index_2,
++ sblk->fragment_table_start,
++ SQUASHFS_FRAGMENT_INDEX_BYTES_2
++ (sblk->fragments) |
++ SQUASHFS_COMPRESSED_BIT_BLOCK, NULL)) {
++ ERROR("unable to read fragment index table\n");
++ return 0;
++ }
++
++ if (msblk->swap) {
++ int i;
++ unsigned int fragment;
++
++ for (i = 0; i < SQUASHFS_FRAGMENT_INDEXES_2(sblk->fragments);
++ i++) {
++ SQUASHFS_SWAP_FRAGMENT_INDEXES_2((&fragment),
++ &msblk->fragment_index_2[i], 1);
++ msblk->fragment_index_2[i] = fragment;
++ }
++ }
++
++ return 1;
++}
++
++
++static int get_fragment_location_2(struct super_block *s, unsigned int fragment,
++ long long *fragment_start_block,
++ unsigned int *fragment_size)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ long long start_block =
++ msblk->fragment_index_2[SQUASHFS_FRAGMENT_INDEX_2(fragment)];
++ int offset = SQUASHFS_FRAGMENT_INDEX_OFFSET_2(fragment);
++ struct squashfs_fragment_entry_2 fragment_entry;
++
++ if (msblk->swap) {
++ struct squashfs_fragment_entry_2 sfragment_entry;
++
++ if (!squashfs_get_cached_block(s, (char *) &sfragment_entry,
++ start_block, offset,
++ sizeof(sfragment_entry), &start_block,
++ &offset))
++ goto out;
++ SQUASHFS_SWAP_FRAGMENT_ENTRY_2(&fragment_entry, &sfragment_entry);
++ } else
++ if (!squashfs_get_cached_block(s, (char *) &fragment_entry,
++ start_block, offset,
++ sizeof(fragment_entry), &start_block,
++ &offset))
++ goto out;
++
++ *fragment_start_block = fragment_entry.start_block;
++ *fragment_size = fragment_entry.size;
++
++ return 1;
++
++out:
++ return 0;
++}
++
++
++static struct inode *squashfs_new_inode(struct super_block *s,
++ struct squashfs_base_inode_header_2 *inodeb, unsigned int ino)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ struct inode *i = new_inode(s);
++
++ if (i) {
++ i->i_ino = ino;
++ i->i_mtime.tv_sec = sblk->mkfs_time;
++ i->i_atime.tv_sec = sblk->mkfs_time;
++ i->i_ctime.tv_sec = sblk->mkfs_time;
++ i->i_uid = msblk->uid[inodeb->uid];
++ i->i_mode = inodeb->mode;
++ i->i_nlink = 1;
++ i->i_size = 0;
++ if (inodeb->guid == SQUASHFS_GUIDS)
++ i->i_gid = i->i_uid;
++ else
++ i->i_gid = msblk->guid[inodeb->guid];
++ }
++
++ return i;
++}
++
++
++static struct inode *squashfs_iget_2(struct super_block *s, squashfs_inode_t inode)
++{
++ struct inode *i;
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ unsigned int block = SQUASHFS_INODE_BLK(inode) +
++ sblk->inode_table_start;
++ unsigned int offset = SQUASHFS_INODE_OFFSET(inode);
++ unsigned int ino = SQUASHFS_MK_VFS_INODE(block
++ - sblk->inode_table_start, offset);
++ long long next_block;
++ unsigned int next_offset;
++ union squashfs_inode_header_2 id, sid;
++ struct squashfs_base_inode_header_2 *inodeb = &id.base,
++ *sinodeb = &sid.base;
++
++ TRACE("Entered squashfs_iget\n");
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *) sinodeb, block,
++ offset, sizeof(*sinodeb), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_BASE_INODE_HEADER_2(inodeb, sinodeb,
++ sizeof(*sinodeb));
++ } else
++ if (!squashfs_get_cached_block(s, (char *) inodeb, block,
++ offset, sizeof(*inodeb), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ switch(inodeb->inode_type) {
++ case SQUASHFS_FILE_TYPE: {
++ struct squashfs_reg_inode_header_2 *inodep = &id.reg;
++ struct squashfs_reg_inode_header_2 *sinodep = &sid.reg;
++ long long frag_blk;
++ unsigned int frag_size;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_REG_INODE_HEADER_2(inodep, sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ frag_blk = SQUASHFS_INVALID_BLK;
++ if (inodep->fragment != SQUASHFS_INVALID_FRAG &&
++ !get_fragment_location_2(s,
++ inodep->fragment, &frag_blk, &frag_size))
++ goto failed_read;
++
++ if((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
++ goto failed_read1;
++
++ i->i_size = inodep->file_size;
++ i->i_fop = &generic_ro_fops;
++ i->i_mode |= S_IFREG;
++ i->i_mtime.tv_sec = inodep->mtime;
++ i->i_atime.tv_sec = inodep->mtime;
++ i->i_ctime.tv_sec = inodep->mtime;
++ i->i_blocks = ((i->i_size - 1) >> 9) + 1;
++ i->i_blksize = PAGE_CACHE_SIZE;
++ SQUASHFS_I(i)->u.s1.fragment_start_block = frag_blk;
++ SQUASHFS_I(i)->u.s1.fragment_size = frag_size;
++ SQUASHFS_I(i)->u.s1.fragment_offset = inodep->offset;
++ SQUASHFS_I(i)->start_block = inodep->start_block;
++ SQUASHFS_I(i)->u.s1.block_list_start = next_block;
++ SQUASHFS_I(i)->offset = next_offset;
++ if (sblk->block_size > 4096)
++ i->i_data.a_ops = &squashfs_aops;
++ else
++ i->i_data.a_ops = &squashfs_aops_4K;
++
++ TRACE("File inode %x:%x, start_block %x, "
++ "block_list_start %llx, offset %x\n",
++ SQUASHFS_INODE_BLK(inode), offset,
++ inodep->start_block, next_block,
++ next_offset);
++ break;
++ }
++ case SQUASHFS_DIR_TYPE: {
++ struct squashfs_dir_inode_header_2 *inodep = &id.dir;
++ struct squashfs_dir_inode_header_2 *sinodep = &sid.dir;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_DIR_INODE_HEADER_2(inodep, sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ if((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
++ goto failed_read1;
++
++ i->i_size = inodep->file_size;
++ i->i_op = &squashfs_dir_inode_ops_2;
++ i->i_fop = &squashfs_dir_ops_2;
++ i->i_mode |= S_IFDIR;
++ i->i_mtime.tv_sec = inodep->mtime;
++ i->i_atime.tv_sec = inodep->mtime;
++ i->i_ctime.tv_sec = inodep->mtime;
++ SQUASHFS_I(i)->start_block = inodep->start_block;
++ SQUASHFS_I(i)->offset = inodep->offset;
++ SQUASHFS_I(i)->u.s2.directory_index_count = 0;
++ SQUASHFS_I(i)->u.s2.parent_inode = 0;
++
++ TRACE("Directory inode %x:%x, start_block %x, offset "
++ "%x\n", SQUASHFS_INODE_BLK(inode),
++ offset, inodep->start_block,
++ inodep->offset);
++ break;
++ }
++ case SQUASHFS_LDIR_TYPE: {
++ struct squashfs_ldir_inode_header_2 *inodep = &id.ldir;
++ struct squashfs_ldir_inode_header_2 *sinodep = &sid.ldir;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_LDIR_INODE_HEADER_2(inodep,
++ sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ if((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
++ goto failed_read1;
++
++ i->i_size = inodep->file_size;
++ i->i_op = &squashfs_dir_inode_ops_2;
++ i->i_fop = &squashfs_dir_ops_2;
++ i->i_mode |= S_IFDIR;
++ i->i_mtime.tv_sec = inodep->mtime;
++ i->i_atime.tv_sec = inodep->mtime;
++ i->i_ctime.tv_sec = inodep->mtime;
++ SQUASHFS_I(i)->start_block = inodep->start_block;
++ SQUASHFS_I(i)->offset = inodep->offset;
++ SQUASHFS_I(i)->u.s2.directory_index_start = next_block;
++ SQUASHFS_I(i)->u.s2.directory_index_offset =
++ next_offset;
++ SQUASHFS_I(i)->u.s2.directory_index_count =
++ inodep->i_count;
++ SQUASHFS_I(i)->u.s2.parent_inode = 0;
++
++ TRACE("Long directory inode %x:%x, start_block %x, "
++ "offset %x\n",
++ SQUASHFS_INODE_BLK(inode), offset,
++ inodep->start_block, inodep->offset);
++ break;
++ }
++ case SQUASHFS_SYMLINK_TYPE: {
++ struct squashfs_symlink_inode_header_2 *inodep =
++ &id.symlink;
++ struct squashfs_symlink_inode_header_2 *sinodep =
++ &sid.symlink;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_SYMLINK_INODE_HEADER_2(inodep,
++ sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ if((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
++ goto failed_read1;
++
++ i->i_size = inodep->symlink_size;
++ i->i_op = &page_symlink_inode_operations;
++ i->i_data.a_ops = &squashfs_symlink_aops;
++ i->i_mode |= S_IFLNK;
++ SQUASHFS_I(i)->start_block = next_block;
++ SQUASHFS_I(i)->offset = next_offset;
++
++ TRACE("Symbolic link inode %x:%x, start_block %llx, "
++ "offset %x\n",
++ SQUASHFS_INODE_BLK(inode), offset,
++ next_block, next_offset);
++ break;
++ }
++ case SQUASHFS_BLKDEV_TYPE:
++ case SQUASHFS_CHRDEV_TYPE: {
++ struct squashfs_dev_inode_header_2 *inodep = &id.dev;
++ struct squashfs_dev_inode_header_2 *sinodep = &sid.dev;
++
++ if (msblk->swap) {
++ if (!squashfs_get_cached_block(s, (char *)
++ sinodep, block, offset,
++ sizeof(*sinodep), &next_block,
++ &next_offset))
++ goto failed_read;
++ SQUASHFS_SWAP_DEV_INODE_HEADER_2(inodep, sinodep);
++ } else
++ if (!squashfs_get_cached_block(s, (char *)
++ inodep, block, offset,
++ sizeof(*inodep), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ if ((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
++ goto failed_read1;
++
++ i->i_mode |= (inodeb->inode_type ==
++ SQUASHFS_CHRDEV_TYPE) ? S_IFCHR :
++ S_IFBLK;
++ init_special_inode(i, i->i_mode,
++ old_decode_dev(inodep->rdev));
++
++ TRACE("Device inode %x:%x, rdev %x\n",
++ SQUASHFS_INODE_BLK(inode), offset,
++ inodep->rdev);
++ break;
++ }
++ case SQUASHFS_FIFO_TYPE:
++ case SQUASHFS_SOCKET_TYPE: {
++ if ((i = squashfs_new_inode(s, inodeb, ino)) == NULL)
++ goto failed_read1;
++
++ i->i_mode |= (inodeb->inode_type == SQUASHFS_FIFO_TYPE)
++ ? S_IFIFO : S_IFSOCK;
++ init_special_inode(i, i->i_mode, 0);
++ break;
++ }
++ default:
++ ERROR("Unknown inode type %d in squashfs_iget!\n",
++ inodeb->inode_type);
++ goto failed_read1;
++ }
++
++ insert_inode_hash(i);
++ return i;
++
++failed_read:
++ ERROR("Unable to read inode [%x:%x]\n", block, offset);
++
++failed_read1:
++ return NULL;
++}
++
++
++static int get_dir_index_using_offset(struct super_block *s, long long
++ *next_block, unsigned int *next_offset,
++ long long index_start,
++ unsigned int index_offset, int i_count,
++ long long f_pos)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ int i, length = 0;
++ struct squashfs_dir_index_2 index;
++
++ TRACE("Entered get_dir_index_using_offset, i_count %d, f_pos %d\n",
++ i_count, (unsigned int) f_pos);
++
++ if (f_pos == 0)
++ goto finish;
++
++ for (i = 0; i < i_count; i++) {
++ if (msblk->swap) {
++ struct squashfs_dir_index_2 sindex;
++ squashfs_get_cached_block(s, (char *) &sindex,
++ index_start, index_offset,
++ sizeof(sindex), &index_start,
++ &index_offset);
++ SQUASHFS_SWAP_DIR_INDEX_2(&index, &sindex);
++ } else
++ squashfs_get_cached_block(s, (char *) &index,
++ index_start, index_offset,
++ sizeof(index), &index_start,
++ &index_offset);
++
++ if (index.index > f_pos)
++ break;
++
++ squashfs_get_cached_block(s, NULL, index_start, index_offset,
++ index.size + 1, &index_start,
++ &index_offset);
++
++ length = index.index;
++ *next_block = index.start_block + sblk->directory_table_start;
++ }
++
++ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE;
++
++finish:
++ return length;
++}
++
++
++static int get_dir_index_using_name(struct super_block *s, long long
++ *next_block, unsigned int *next_offset,
++ long long index_start,
++ unsigned int index_offset, int i_count,
++ const char *name, int size)
++{
++ struct squashfs_sb_info *msblk = s->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ int i, length = 0;
++ char buffer[sizeof(struct squashfs_dir_index_2) + SQUASHFS_NAME_LEN + 1];
++ struct squashfs_dir_index_2 *index = (struct squashfs_dir_index_2 *) buffer;
++ char str[SQUASHFS_NAME_LEN + 1];
++
++ TRACE("Entered get_dir_index_using_name, i_count %d\n", i_count);
++
++ strncpy(str, name, size);
++ str[size] = '\0';
++
++ for (i = 0; i < i_count; i++) {
++ if (msblk->swap) {
++ struct squashfs_dir_index_2 sindex;
++ squashfs_get_cached_block(s, (char *) &sindex,
++ index_start, index_offset,
++ sizeof(sindex), &index_start,
++ &index_offset);
++ SQUASHFS_SWAP_DIR_INDEX_2(index, &sindex);
++ } else
++ squashfs_get_cached_block(s, (char *) index,
++ index_start, index_offset,
++ sizeof(struct squashfs_dir_index_2),
++ &index_start, &index_offset);
++
++ squashfs_get_cached_block(s, index->name, index_start,
++ index_offset, index->size + 1,
++ &index_start, &index_offset);
++
++ index->name[index->size + 1] = '\0';
++
++ if (strcmp(index->name, str) > 0)
++ break;
++
++ length = index->index;
++ *next_block = index->start_block + sblk->directory_table_start;
++ }
++
++ *next_offset = (length + *next_offset) % SQUASHFS_METADATA_SIZE;
++ return length;
++}
++
++
++static int squashfs_readdir_2(struct file *file, void *dirent, filldir_t filldir)
++{
++ struct inode *i = file->f_dentry->d_inode;
++ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ long long next_block = SQUASHFS_I(i)->start_block +
++ sblk->directory_table_start;
++ int next_offset = SQUASHFS_I(i)->offset, length = 0, dirs_read = 0,
++ dir_count;
++ struct squashfs_dir_header_2 dirh;
++ char buffer[sizeof(struct squashfs_dir_entry_2) + SQUASHFS_NAME_LEN + 1];
++ struct squashfs_dir_entry_2 *dire = (struct squashfs_dir_entry_2 *) buffer;
++
++ TRACE("Entered squashfs_readdir_2 [%llx:%x]\n", next_block, next_offset);
++
++ length = get_dir_index_using_offset(i->i_sb, &next_block, &next_offset,
++ SQUASHFS_I(i)->u.s2.directory_index_start,
++ SQUASHFS_I(i)->u.s2.directory_index_offset,
++ SQUASHFS_I(i)->u.s2.directory_index_count,
++ file->f_pos);
++
++ while (length < i_size_read(i)) {
++ /* read directory header */
++ if (msblk->swap) {
++ struct squashfs_dir_header_2 sdirh;
++
++ if (!squashfs_get_cached_block(i->i_sb, (char *) &sdirh,
++ next_block, next_offset, sizeof(sdirh),
++ &next_block, &next_offset))
++ goto failed_read;
++
++ length += sizeof(sdirh);
++ SQUASHFS_SWAP_DIR_HEADER_2(&dirh, &sdirh);
++ } else {
++ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh,
++ next_block, next_offset, sizeof(dirh),
++ &next_block, &next_offset))
++ goto failed_read;
++
++ length += sizeof(dirh);
++ }
++
++ dir_count = dirh.count + 1;
++ while (dir_count--) {
++ if (msblk->swap) {
++ struct squashfs_dir_entry_2 sdire;
++ if (!squashfs_get_cached_block(i->i_sb, (char *)
++ &sdire, next_block, next_offset,
++ sizeof(sdire), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ length += sizeof(sdire);
++ SQUASHFS_SWAP_DIR_ENTRY_2(dire, &sdire);
++ } else {
++ if (!squashfs_get_cached_block(i->i_sb, (char *)
++ dire, next_block, next_offset,
++ sizeof(*dire), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ length += sizeof(*dire);
++ }
++
++ if (!squashfs_get_cached_block(i->i_sb, dire->name,
++ next_block, next_offset,
++ dire->size + 1, &next_block,
++ &next_offset))
++ goto failed_read;
++
++ length += dire->size + 1;
++
++ if (file->f_pos >= length)
++ continue;
++
++ dire->name[dire->size + 1] = '\0';
++
++ TRACE("Calling filldir(%x, %s, %d, %d, %x:%x, %d)\n",
++ (unsigned int) dirent, dire->name,
++ dire->size + 1, (int) file->f_pos,
++ dirh.start_block, dire->offset,
++ squashfs_filetype_table[dire->type]);
++
++ if (filldir(dirent, dire->name, dire->size + 1,
++ file->f_pos, SQUASHFS_MK_VFS_INODE(
++ dirh.start_block, dire->offset),
++ squashfs_filetype_table[dire->type])
++ < 0) {
++ TRACE("Filldir returned less than 0\n");
++ goto finish;
++ }
++ file->f_pos = length;
++ dirs_read++;
++ }
++ }
++
++finish:
++ return dirs_read;
++
++failed_read:
++ ERROR("Unable to read directory block [%llx:%x]\n", next_block,
++ next_offset);
++ return 0;
++}
++
++
++static struct dentry *squashfs_lookup_2(struct inode *i, struct dentry *dentry,
++ struct nameidata *nd)
++{
++ const unsigned char *name = dentry->d_name.name;
++ int len = dentry->d_name.len;
++ struct inode *inode = NULL;
++ struct squashfs_sb_info *msblk = i->i_sb->s_fs_info;
++ struct squashfs_super_block *sblk = &msblk->sblk;
++ long long next_block = SQUASHFS_I(i)->start_block +
++ sblk->directory_table_start;
++ int next_offset = SQUASHFS_I(i)->offset, length = 0,
++ dir_count;
++ struct squashfs_dir_header_2 dirh;
++ char buffer[sizeof(struct squashfs_dir_entry_2) + SQUASHFS_NAME_LEN];
++ struct squashfs_dir_entry_2 *dire = (struct squashfs_dir_entry_2 *) buffer;
++ int sorted = sblk->s_major == 2 && sblk->s_minor >= 1;
++
++ TRACE("Entered squashfs_lookup [%llx:%x]\n", next_block, next_offset);
++
++ if (len > SQUASHFS_NAME_LEN)
++ goto exit_loop;
++
++ length = get_dir_index_using_name(i->i_sb, &next_block, &next_offset,
++ SQUASHFS_I(i)->u.s2.directory_index_start,
++ SQUASHFS_I(i)->u.s2.directory_index_offset,
++ SQUASHFS_I(i)->u.s2.directory_index_count, name,
++ len);
++
++ while (length < i_size_read(i)) {
++ /* read directory header */
++ if (msblk->swap) {
++ struct squashfs_dir_header_2 sdirh;
++ if (!squashfs_get_cached_block(i->i_sb, (char *) &sdirh,
++ next_block, next_offset, sizeof(sdirh),
++ &next_block, &next_offset))
++ goto failed_read;
++
++ length += sizeof(sdirh);
++ SQUASHFS_SWAP_DIR_HEADER_2(&dirh, &sdirh);
++ } else {
++ if (!squashfs_get_cached_block(i->i_sb, (char *) &dirh,
++ next_block, next_offset, sizeof(dirh),
++ &next_block, &next_offset))
++ goto failed_read;
++
++ length += sizeof(dirh);
++ }
++
++ dir_count = dirh.count + 1;
++ while (dir_count--) {
++ if (msblk->swap) {
++ struct squashfs_dir_entry_2 sdire;
++ if (!squashfs_get_cached_block(i->i_sb, (char *)
++ &sdire, next_block,next_offset,
++ sizeof(sdire), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ length += sizeof(sdire);
++ SQUASHFS_SWAP_DIR_ENTRY_2(dire, &sdire);
++ } else {
++ if (!squashfs_get_cached_block(i->i_sb, (char *)
++ dire, next_block,next_offset,
++ sizeof(*dire), &next_block,
++ &next_offset))
++ goto failed_read;
++
++ length += sizeof(*dire);
++ }
++
++ if (!squashfs_get_cached_block(i->i_sb, dire->name,
++ next_block, next_offset, dire->size + 1,
++ &next_block, &next_offset))
++ goto failed_read;
++
++ length += dire->size + 1;
++
++ if (sorted && name[0] < dire->name[0])
++ goto exit_loop;
++
++ if ((len == dire->size + 1) && !strncmp(name,
++ dire->name, len)) {
++ squashfs_inode_t ino =
++ SQUASHFS_MKINODE(dirh.start_block,
++ dire->offset);
++
++ TRACE("calling squashfs_iget for directory "
++ "entry %s, inode %x:%x, %lld\n", name,
++ dirh.start_block, dire->offset, ino);
++
++ inode = (msblk->iget)(i->i_sb, ino);
++
++ goto exit_loop;
++ }
++ }
++ }
++
++exit_loop:
++ d_add(dentry, inode);
++ return ERR_PTR(0);
++
++failed_read:
++ ERROR("Unable to read directory block [%llx:%x]\n", next_block,
++ next_offset);
++ goto exit_loop;
++}
++
++
++int squashfs_2_0_supported(struct squashfs_sb_info *msblk)
++{
++ struct squashfs_super_block *sblk = &msblk->sblk;
++
++ msblk->iget = squashfs_iget_2;
++ msblk->read_fragment_index_table = read_fragment_index_table_2;
++
++ sblk->bytes_used = sblk->bytes_used_2;
++ sblk->uid_start = sblk->uid_start_2;
++ sblk->guid_start = sblk->guid_start_2;
++ sblk->inode_table_start = sblk->inode_table_start_2;
++ sblk->directory_table_start = sblk->directory_table_start_2;
++ sblk->fragment_table_start = sblk->fragment_table_start_2;
++
++ return 1;
++}
+diff -urN linux-2.6.22.4/fs/squashfs/squashfs.h linux-2.6.22.4-squashfs/fs/squashfs/squashfs.h
+--- linux-2.6.22.4/fs/squashfs/squashfs.h 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.22.4-squashfs/fs/squashfs/squashfs.h 2007-09-20 19:13:44.000000000 +0200
+@@ -0,0 +1,86 @@
++/*
++ * Squashfs - a compressed read only filesystem for Linux
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005, 2006
++ * Phillip Lougher <phillip@lougher.org.uk>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2,
++ * or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * squashfs.h
++ */
++
++#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
++#undef CONFIG_SQUASHFS_1_0_COMPATIBILITY
++#endif
++
++#ifdef SQUASHFS_TRACE
++#define TRACE(s, args...) printk(KERN_NOTICE "SQUASHFS: "s, ## args)
++#else
++#define TRACE(s, args...) {}
++#endif
++
++#define ERROR(s, args...) printk(KERN_ERR "SQUASHFS error: "s, ## args)
++
++#define SERROR(s, args...) do { \
++ if (!silent) \
++ printk(KERN_ERR "SQUASHFS error: "s, ## args);\
++ } while(0)
++
++#define WARNING(s, args...) printk(KERN_WARNING "SQUASHFS: "s, ## args)
++
++static inline struct squashfs_inode_info *SQUASHFS_I(struct inode *inode)
++{
++ return list_entry(inode, struct squashfs_inode_info, vfs_inode);
++}
++
++#if defined(CONFIG_SQUASHFS_1_0_COMPATIBILITY ) || defined(CONFIG_SQUASHFS_2_0_COMPATIBILITY)
++#define SQSH_EXTERN
++extern unsigned int squashfs_read_data(struct super_block *s, char *buffer,
++ long long index, unsigned int length,
++ long long *next_index);
++extern int squashfs_get_cached_block(struct super_block *s, char *buffer,
++ long long block, unsigned int offset,
++ int length, long long *next_block,
++ unsigned int *next_offset);
++extern void release_cached_fragment(struct squashfs_sb_info *msblk, struct
++ squashfs_fragment_cache *fragment);
++extern struct squashfs_fragment_cache *get_cached_fragment(struct super_block
++ *s, long long start_block,
++ int length);
++extern struct address_space_operations squashfs_symlink_aops;
++extern struct address_space_operations squashfs_aops;
++extern struct address_space_operations squashfs_aops_4K;
++extern struct inode_operations squashfs_dir_inode_ops;
++#else
++#define SQSH_EXTERN static
++#endif
++
++#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
++extern int squashfs_1_0_supported(struct squashfs_sb_info *msblk);
++#else
++static inline int squashfs_1_0_supported(struct squashfs_sb_info *msblk)
++{
++ return 0;
++}
++#endif
++
++#ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY
++extern int squashfs_2_0_supported(struct squashfs_sb_info *msblk);
++#else
++static inline int squashfs_2_0_supported(struct squashfs_sb_info *msblk)
++{
++ return 0;
++}
++#endif
+diff -urN linux-2.6.22.4/include/linux/magic.h linux-2.6.22.4-squashfs/include/linux/magic.h
+--- linux-2.6.22.4/include/linux/magic.h 2007-08-21 06:33:06.000000000 +0200
++++ linux-2.6.22.4-squashfs/include/linux/magic.h 2007-09-20 19:15:43.000000000 +0200
+@@ -36,6 +36,9 @@
+ #define REISER2FS_SUPER_MAGIC_STRING "ReIsEr2Fs"
+ #define REISER2FS_JR_SUPER_MAGIC_STRING "ReIsEr3Fs"
+
++#define SQUASHFS_MAGIC 0x73717368
++#define SQUASHFS_MAGIC_SWAP 0x68737173
++
+ #define SMB_SUPER_MAGIC 0x517B
+ #define USBDEVICE_SUPER_MAGIC 0x9fa2
+
+diff -urN linux-2.6.22.4/include/linux/squashfs_fs.h linux-2.6.22.4-squashfs/include/linux/squashfs_fs.h
+--- linux-2.6.22.4/include/linux/squashfs_fs.h 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.22.4-squashfs/include/linux/squashfs_fs.h 2007-09-20 19:15:01.000000000 +0200
+@@ -0,0 +1,911 @@
++#ifndef SQUASHFS_FS
++#define SQUASHFS_FS
++
++/*
++ * Squashfs
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005, 2006
++ * Phillip Lougher <phillip@lougher.org.uk>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2,
++ * or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * squashfs_fs.h
++ */
++
++#ifndef CONFIG_SQUASHFS_2_0_COMPATIBILITY
++#define CONFIG_SQUASHFS_2_0_COMPATIBILITY
++#endif
++
++#ifdef CONFIG_SQUASHFS_VMALLOC
++#define SQUASHFS_ALLOC(a) vmalloc(a)
++#define SQUASHFS_FREE(a) vfree(a)
++#else
++#define SQUASHFS_ALLOC(a) kmalloc(a, GFP_KERNEL)
++#define SQUASHFS_FREE(a) kfree(a)
++#endif
++#define SQUASHFS_CACHED_FRAGMENTS CONFIG_SQUASHFS_FRAGMENT_CACHE_SIZE
++#define SQUASHFS_MAJOR 3
++#define SQUASHFS_MINOR 0
++#define SQUASHFS_START 0
++
++/* size of metadata (inode and directory) blocks */
++#define SQUASHFS_METADATA_SIZE 8192
++#define SQUASHFS_METADATA_LOG 13
++
++/* default size of data blocks */
++#define SQUASHFS_FILE_SIZE 65536
++#define SQUASHFS_FILE_LOG 16
++
++#define SQUASHFS_FILE_MAX_SIZE 65536
++
++/* Max number of uids and gids */
++#define SQUASHFS_UIDS 256
++#define SQUASHFS_GUIDS 255
++
++/* Max length of filename (not 255) */
++#define SQUASHFS_NAME_LEN 256
++
++#define SQUASHFS_INVALID ((long long) 0xffffffffffff)
++#define SQUASHFS_INVALID_FRAG ((unsigned int) 0xffffffff)
++#define SQUASHFS_INVALID_BLK ((long long) -1)
++#define SQUASHFS_USED_BLK ((long long) -2)
++
++/* Filesystem flags */
++#define SQUASHFS_NOI 0
++#define SQUASHFS_NOD 1
++#define SQUASHFS_CHECK 2
++#define SQUASHFS_NOF 3
++#define SQUASHFS_NO_FRAG 4
++#define SQUASHFS_ALWAYS_FRAG 5
++#define SQUASHFS_DUPLICATE 6
++
++#define SQUASHFS_BIT(flag, bit) ((flag >> bit) & 1)
++
++#define SQUASHFS_UNCOMPRESSED_INODES(flags) SQUASHFS_BIT(flags, \
++ SQUASHFS_NOI)
++
++#define SQUASHFS_UNCOMPRESSED_DATA(flags) SQUASHFS_BIT(flags, \
++ SQUASHFS_NOD)
++
++#define SQUASHFS_UNCOMPRESSED_FRAGMENTS(flags) SQUASHFS_BIT(flags, \
++ SQUASHFS_NOF)
++
++#define SQUASHFS_NO_FRAGMENTS(flags) SQUASHFS_BIT(flags, \
++ SQUASHFS_NO_FRAG)
++
++#define SQUASHFS_ALWAYS_FRAGMENTS(flags) SQUASHFS_BIT(flags, \
++ SQUASHFS_ALWAYS_FRAG)
++
++#define SQUASHFS_DUPLICATES(flags) SQUASHFS_BIT(flags, \
++ SQUASHFS_DUPLICATE)
++
++#define SQUASHFS_CHECK_DATA(flags) SQUASHFS_BIT(flags, \
++ SQUASHFS_CHECK)
++
++#define SQUASHFS_MKFLAGS(noi, nod, check_data, nof, no_frag, always_frag, \
++ duplicate_checking) (noi | (nod << 1) | (check_data << 2) \
++ | (nof << 3) | (no_frag << 4) | (always_frag << 5) | \
++ (duplicate_checking << 6))
++
++/* Max number of types and file types */
++#define SQUASHFS_DIR_TYPE 1
++#define SQUASHFS_FILE_TYPE 2
++#define SQUASHFS_SYMLINK_TYPE 3
++#define SQUASHFS_BLKDEV_TYPE 4
++#define SQUASHFS_CHRDEV_TYPE 5
++#define SQUASHFS_FIFO_TYPE 6
++#define SQUASHFS_SOCKET_TYPE 7
++#define SQUASHFS_LDIR_TYPE 8
++#define SQUASHFS_LREG_TYPE 9
++
++/* 1.0 filesystem type definitions */
++#define SQUASHFS_TYPES 5
++#define SQUASHFS_IPC_TYPE 0
++
++/* Flag whether block is compressed or uncompressed, bit is set if block is
++ * uncompressed */
++#define SQUASHFS_COMPRESSED_BIT (1 << 15)
++
++#define SQUASHFS_COMPRESSED_SIZE(B) (((B) & ~SQUASHFS_COMPRESSED_BIT) ? \
++ (B) & ~SQUASHFS_COMPRESSED_BIT : SQUASHFS_COMPRESSED_BIT)
++
++#define SQUASHFS_COMPRESSED(B) (!((B) & SQUASHFS_COMPRESSED_BIT))
++
++#define SQUASHFS_COMPRESSED_BIT_BLOCK (1 << 24)
++
++#define SQUASHFS_COMPRESSED_SIZE_BLOCK(B) (((B) & \
++ ~SQUASHFS_COMPRESSED_BIT_BLOCK) ? (B) & \
++ ~SQUASHFS_COMPRESSED_BIT_BLOCK : SQUASHFS_COMPRESSED_BIT_BLOCK)
++
++#define SQUASHFS_COMPRESSED_BLOCK(B) (!((B) & SQUASHFS_COMPRESSED_BIT_BLOCK))
++
++/*
++ * Inode number ops. Inodes consist of a compressed block number, and an
++ * uncompressed offset within that block
++ */
++#define SQUASHFS_INODE_BLK(a) ((unsigned int) ((a) >> 16))
++
++#define SQUASHFS_INODE_OFFSET(a) ((unsigned int) ((a) & 0xffff))
++
++#define SQUASHFS_MKINODE(A, B) ((squashfs_inode_t)(((squashfs_inode_t) (A)\
++ << 16) + (B)))
++
++/* Compute 32 bit VFS inode number from squashfs inode number */
++#define SQUASHFS_MK_VFS_INODE(a, b) ((unsigned int) (((a) << 8) + \
++ ((b) >> 2) + 1))
++/* XXX */
++
++/* Translate between VFS mode and squashfs mode */
++#define SQUASHFS_MODE(a) ((a) & 0xfff)
++
++/* fragment and fragment table defines */
++#define SQUASHFS_FRAGMENT_BYTES(A) (A * sizeof(struct squashfs_fragment_entry))
++
++#define SQUASHFS_FRAGMENT_INDEX(A) (SQUASHFS_FRAGMENT_BYTES(A) / \
++ SQUASHFS_METADATA_SIZE)
++
++#define SQUASHFS_FRAGMENT_INDEX_OFFSET(A) (SQUASHFS_FRAGMENT_BYTES(A) % \
++ SQUASHFS_METADATA_SIZE)
++
++#define SQUASHFS_FRAGMENT_INDEXES(A) ((SQUASHFS_FRAGMENT_BYTES(A) + \
++ SQUASHFS_METADATA_SIZE - 1) / \
++ SQUASHFS_METADATA_SIZE)
++
++#define SQUASHFS_FRAGMENT_INDEX_BYTES(A) (SQUASHFS_FRAGMENT_INDEXES(A) *\
++ sizeof(long long))
++
++/* cached data constants for filesystem */
++#define SQUASHFS_CACHED_BLKS 8
++
++#define SQUASHFS_MAX_FILE_SIZE_LOG 64
++
++#define SQUASHFS_MAX_FILE_SIZE ((long long) 1 << \
++ (SQUASHFS_MAX_FILE_SIZE_LOG - 2))
++
++#define SQUASHFS_MARKER_BYTE 0xff
++
++/* meta index cache */
++#define SQUASHFS_META_INDEXES (SQUASHFS_METADATA_SIZE / sizeof(unsigned int))
++#define SQUASHFS_META_ENTRIES 31
++#define SQUASHFS_META_NUMBER 8
++#define SQUASHFS_SLOTS 4
++
++#include <linux/magic.h>
++
++struct meta_entry {
++ long long data_block;
++ unsigned int index_block;
++ unsigned short offset;
++ unsigned short pad;
++};
++
++struct meta_index {
++ unsigned int inode_number;
++ unsigned int offset;
++ unsigned short entries;
++ unsigned short skip;
++ unsigned short locked;
++ unsigned short pad;
++ struct meta_entry meta_entry[SQUASHFS_META_ENTRIES];
++};
++
++
++/*
++ * definitions for structures on disk
++ */
++
++typedef long long squashfs_block_t;
++typedef long long squashfs_inode_t;
++
++struct squashfs_super_block {
++ unsigned int s_magic;
++ unsigned int inodes;
++ unsigned int bytes_used_2;
++ unsigned int uid_start_2;
++ unsigned int guid_start_2;
++ unsigned int inode_table_start_2;
++ unsigned int directory_table_start_2;
++ unsigned int s_major:16;
++ unsigned int s_minor:16;
++ unsigned int block_size_1:16;
++ unsigned int block_log:16;
++ unsigned int flags:8;
++ unsigned int no_uids:8;
++ unsigned int no_guids:8;
++ unsigned int mkfs_time /* time of filesystem creation */;
++ squashfs_inode_t root_inode;
++ unsigned int block_size;
++ unsigned int fragments;
++ unsigned int fragment_table_start_2;
++ long long bytes_used;
++ long long uid_start;
++ long long guid_start;
++ long long inode_table_start;
++ long long directory_table_start;
++ long long fragment_table_start;
++ long long unused;
++} __attribute__ ((packed));
++
++struct squashfs_dir_index {
++ unsigned int index;
++ unsigned int start_block;
++ unsigned char size;
++ unsigned char name[0];
++} __attribute__ ((packed));
++
++#define SQUASHFS_BASE_INODE_HEADER \
++ unsigned int inode_type:4; \
++ unsigned int mode:12; \
++ unsigned int uid:8; \
++ unsigned int guid:8; \
++ unsigned int mtime; \
++ unsigned int inode_number;
++
++struct squashfs_base_inode_header {
++ SQUASHFS_BASE_INODE_HEADER;
++} __attribute__ ((packed));
++
++struct squashfs_ipc_inode_header {
++ SQUASHFS_BASE_INODE_HEADER;
++ unsigned int nlink;
++} __attribute__ ((packed));
++
++struct squashfs_dev_inode_header {
++ SQUASHFS_BASE_INODE_HEADER;
++ unsigned int nlink;
++ unsigned short rdev;
++} __attribute__ ((packed));
++
++struct squashfs_symlink_inode_header {
++ SQUASHFS_BASE_INODE_HEADER;
++ unsigned int nlink;
++ unsigned short symlink_size;
++ char symlink[0];
++} __attribute__ ((packed));
++
++struct squashfs_reg_inode_header {
++ SQUASHFS_BASE_INODE_HEADER;
++ squashfs_block_t start_block;
++ unsigned int fragment;
++ unsigned int offset;
++ unsigned int file_size;
++ unsigned short block_list[0];
++} __attribute__ ((packed));
++
++struct squashfs_lreg_inode_header {
++ SQUASHFS_BASE_INODE_HEADER;
++ unsigned int nlink;
++ squashfs_block_t start_block;
++ unsigned int fragment;
++ unsigned int offset;
++ long long file_size;
++ unsigned short block_list[0];
++} __attribute__ ((packed));
++
++struct squashfs_dir_inode_header {
++ SQUASHFS_BASE_INODE_HEADER;
++ unsigned int nlink;
++ unsigned int file_size:19;
++ unsigned int offset:13;
++ unsigned int start_block;
++ unsigned int parent_inode;
++} __attribute__ ((packed));
++
++struct squashfs_ldir_inode_header {
++ SQUASHFS_BASE_INODE_HEADER;
++ unsigned int nlink;
++ unsigned int file_size:27;
++ unsigned int offset:13;
++ unsigned int start_block;
++ unsigned int i_count:16;
++ unsigned int parent_inode;
++ struct squashfs_dir_index index[0];
++} __attribute__ ((packed));
++
++union squashfs_inode_header {
++ struct squashfs_base_inode_header base;
++ struct squashfs_dev_inode_header dev;
++ struct squashfs_symlink_inode_header symlink;
++ struct squashfs_reg_inode_header reg;
++ struct squashfs_lreg_inode_header lreg;
++ struct squashfs_dir_inode_header dir;
++ struct squashfs_ldir_inode_header ldir;
++ struct squashfs_ipc_inode_header ipc;
++};
++
++struct squashfs_dir_entry {
++ unsigned int offset:13;
++ unsigned int type:3;
++ unsigned int size:8;
++ int inode_number:16;
++ char name[0];
++} __attribute__ ((packed));
++
++struct squashfs_dir_header {
++ unsigned int count:8;
++ unsigned int start_block;
++ unsigned int inode_number;
++} __attribute__ ((packed));
++
++struct squashfs_fragment_entry {
++ long long start_block;
++ unsigned int size;
++ unsigned int unused;
++} __attribute__ ((packed));
++
++extern int squashfs_uncompress_block(void *d, int dstlen, void *s, int srclen);
++extern int squashfs_uncompress_init(void);
++extern int squashfs_uncompress_exit(void);
++
++/*
++ * macros to convert each packed bitfield structure from little endian to big
++ * endian and vice versa. These are needed when creating or using a filesystem
++ * on a machine with different byte ordering to the target architecture.
++ *
++ */
++
++#define SQUASHFS_SWAP_START \
++ int bits;\
++ int b_pos;\
++ unsigned long long val;\
++ unsigned char *s;\
++ unsigned char *d;
++
++#define SQUASHFS_SWAP_SUPER_BLOCK(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_super_block));\
++ SQUASHFS_SWAP((s)->s_magic, d, 0, 32);\
++ SQUASHFS_SWAP((s)->inodes, d, 32, 32);\
++ SQUASHFS_SWAP((s)->bytes_used_2, d, 64, 32);\
++ SQUASHFS_SWAP((s)->uid_start_2, d, 96, 32);\
++ SQUASHFS_SWAP((s)->guid_start_2, d, 128, 32);\
++ SQUASHFS_SWAP((s)->inode_table_start_2, d, 160, 32);\
++ SQUASHFS_SWAP((s)->directory_table_start_2, d, 192, 32);\
++ SQUASHFS_SWAP((s)->s_major, d, 224, 16);\
++ SQUASHFS_SWAP((s)->s_minor, d, 240, 16);\
++ SQUASHFS_SWAP((s)->block_size_1, d, 256, 16);\
++ SQUASHFS_SWAP((s)->block_log, d, 272, 16);\
++ SQUASHFS_SWAP((s)->flags, d, 288, 8);\
++ SQUASHFS_SWAP((s)->no_uids, d, 296, 8);\
++ SQUASHFS_SWAP((s)->no_guids, d, 304, 8);\
++ SQUASHFS_SWAP((s)->mkfs_time, d, 312, 32);\
++ SQUASHFS_SWAP((s)->root_inode, d, 344, 64);\
++ SQUASHFS_SWAP((s)->block_size, d, 408, 32);\
++ SQUASHFS_SWAP((s)->fragments, d, 440, 32);\
++ SQUASHFS_SWAP((s)->fragment_table_start_2, d, 472, 32);\
++ SQUASHFS_SWAP((s)->bytes_used, d, 504, 64);\
++ SQUASHFS_SWAP((s)->uid_start, d, 568, 64);\
++ SQUASHFS_SWAP((s)->guid_start, d, 632, 64);\
++ SQUASHFS_SWAP((s)->inode_table_start, d, 696, 64);\
++ SQUASHFS_SWAP((s)->directory_table_start, d, 760, 64);\
++ SQUASHFS_SWAP((s)->fragment_table_start, d, 824, 64);\
++ SQUASHFS_SWAP((s)->unused, d, 888, 64);\
++}
++
++#define SQUASHFS_SWAP_BASE_INODE_CORE(s, d, n)\
++ SQUASHFS_MEMSET(s, d, n);\
++ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\
++ SQUASHFS_SWAP((s)->mode, d, 4, 12);\
++ SQUASHFS_SWAP((s)->uid, d, 16, 8);\
++ SQUASHFS_SWAP((s)->guid, d, 24, 8);\
++ SQUASHFS_SWAP((s)->mtime, d, 32, 32);\
++ SQUASHFS_SWAP((s)->inode_number, d, 64, 32);
++
++#define SQUASHFS_SWAP_BASE_INODE_HEADER(s, d, n) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, n)\
++}
++
++#define SQUASHFS_SWAP_IPC_INODE_HEADER(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
++ sizeof(struct squashfs_ipc_inode_header))\
++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
++}
++
++#define SQUASHFS_SWAP_DEV_INODE_HEADER(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
++ sizeof(struct squashfs_dev_inode_header)); \
++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
++ SQUASHFS_SWAP((s)->rdev, d, 128, 16);\
++}
++
++#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
++ sizeof(struct squashfs_symlink_inode_header));\
++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
++ SQUASHFS_SWAP((s)->symlink_size, d, 128, 16);\
++}
++
++#define SQUASHFS_SWAP_REG_INODE_HEADER(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
++ sizeof(struct squashfs_reg_inode_header));\
++ SQUASHFS_SWAP((s)->start_block, d, 96, 64);\
++ SQUASHFS_SWAP((s)->fragment, d, 160, 32);\
++ SQUASHFS_SWAP((s)->offset, d, 192, 32);\
++ SQUASHFS_SWAP((s)->file_size, d, 224, 32);\
++}
++
++#define SQUASHFS_SWAP_LREG_INODE_HEADER(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
++ sizeof(struct squashfs_lreg_inode_header));\
++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
++ SQUASHFS_SWAP((s)->start_block, d, 128, 64);\
++ SQUASHFS_SWAP((s)->fragment, d, 192, 32);\
++ SQUASHFS_SWAP((s)->offset, d, 224, 32);\
++ SQUASHFS_SWAP((s)->file_size, d, 256, 64);\
++}
++
++#define SQUASHFS_SWAP_DIR_INODE_HEADER(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
++ sizeof(struct squashfs_dir_inode_header));\
++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
++ SQUASHFS_SWAP((s)->file_size, d, 128, 19);\
++ SQUASHFS_SWAP((s)->offset, d, 147, 13);\
++ SQUASHFS_SWAP((s)->start_block, d, 160, 32);\
++ SQUASHFS_SWAP((s)->parent_inode, d, 192, 32);\
++}
++
++#define SQUASHFS_SWAP_LDIR_INODE_HEADER(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE(s, d, \
++ sizeof(struct squashfs_ldir_inode_header));\
++ SQUASHFS_SWAP((s)->nlink, d, 96, 32);\
++ SQUASHFS_SWAP((s)->file_size, d, 128, 27);\
++ SQUASHFS_SWAP((s)->offset, d, 155, 13);\
++ SQUASHFS_SWAP((s)->start_block, d, 168, 32);\
++ SQUASHFS_SWAP((s)->i_count, d, 200, 16);\
++ SQUASHFS_SWAP((s)->parent_inode, d, 216, 32);\
++}
++
++#define SQUASHFS_SWAP_DIR_INDEX(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index));\
++ SQUASHFS_SWAP((s)->index, d, 0, 32);\
++ SQUASHFS_SWAP((s)->start_block, d, 32, 32);\
++ SQUASHFS_SWAP((s)->size, d, 64, 8);\
++}
++
++#define SQUASHFS_SWAP_DIR_HEADER(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header));\
++ SQUASHFS_SWAP((s)->count, d, 0, 8);\
++ SQUASHFS_SWAP((s)->start_block, d, 8, 32);\
++ SQUASHFS_SWAP((s)->inode_number, d, 40, 32);\
++}
++
++#define SQUASHFS_SWAP_DIR_ENTRY(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry));\
++ SQUASHFS_SWAP((s)->offset, d, 0, 13);\
++ SQUASHFS_SWAP((s)->type, d, 13, 3);\
++ SQUASHFS_SWAP((s)->size, d, 16, 8);\
++ SQUASHFS_SWAP((s)->inode_number, d, 24, 16);\
++}
++
++#define SQUASHFS_SWAP_FRAGMENT_ENTRY(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry));\
++ SQUASHFS_SWAP((s)->start_block, d, 0, 64);\
++ SQUASHFS_SWAP((s)->size, d, 64, 32);\
++}
++
++#define SQUASHFS_SWAP_SHORTS(s, d, n) {\
++ int entry;\
++ int bit_position;\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, n * 2);\
++ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \
++ 16)\
++ SQUASHFS_SWAP(s[entry], d, bit_position, 16);\
++}
++
++#define SQUASHFS_SWAP_INTS(s, d, n) {\
++ int entry;\
++ int bit_position;\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, n * 4);\
++ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \
++ 32)\
++ SQUASHFS_SWAP(s[entry], d, bit_position, 32);\
++}
++
++#define SQUASHFS_SWAP_LONG_LONGS(s, d, n) {\
++ int entry;\
++ int bit_position;\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, n * 8);\
++ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \
++ 64)\
++ SQUASHFS_SWAP(s[entry], d, bit_position, 64);\
++}
++
++#define SQUASHFS_SWAP_DATA(s, d, n, bits) {\
++ int entry;\
++ int bit_position;\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, n * bits / 8);\
++ for(entry = 0, bit_position = 0; entry < n; entry++, bit_position += \
++ bits)\
++ SQUASHFS_SWAP(s[entry], d, bit_position, bits);\
++}
++
++#define SQUASHFS_SWAP_FRAGMENT_INDEXES(s, d, n) SQUASHFS_SWAP_LONG_LONGS(s, d, n)
++
++#ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
++
++struct squashfs_base_inode_header_1 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:4; /* index into uid table */
++ unsigned int guid:4; /* index into guid table */
++} __attribute__ ((packed));
++
++struct squashfs_ipc_inode_header_1 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:4; /* index into uid table */
++ unsigned int guid:4; /* index into guid table */
++ unsigned int type:4;
++ unsigned int offset:4;
++} __attribute__ ((packed));
++
++struct squashfs_dev_inode_header_1 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:4; /* index into uid table */
++ unsigned int guid:4; /* index into guid table */
++ unsigned short rdev;
++} __attribute__ ((packed));
++
++struct squashfs_symlink_inode_header_1 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:4; /* index into uid table */
++ unsigned int guid:4; /* index into guid table */
++ unsigned short symlink_size;
++ char symlink[0];
++} __attribute__ ((packed));
++
++struct squashfs_reg_inode_header_1 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:4; /* index into uid table */
++ unsigned int guid:4; /* index into guid table */
++ unsigned int mtime;
++ unsigned int start_block;
++ unsigned int file_size:32;
++ unsigned short block_list[0];
++} __attribute__ ((packed));
++
++struct squashfs_dir_inode_header_1 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:4; /* index into uid table */
++ unsigned int guid:4; /* index into guid table */
++ unsigned int file_size:19;
++ unsigned int offset:13;
++ unsigned int mtime;
++ unsigned int start_block:24;
++} __attribute__ ((packed));
++
++#define SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, n) \
++ SQUASHFS_MEMSET(s, d, n);\
++ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\
++ SQUASHFS_SWAP((s)->mode, d, 4, 12);\
++ SQUASHFS_SWAP((s)->uid, d, 16, 4);\
++ SQUASHFS_SWAP((s)->guid, d, 20, 4);
++
++#define SQUASHFS_SWAP_BASE_INODE_HEADER_1(s, d, n) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, n)\
++}
++
++#define SQUASHFS_SWAP_IPC_INODE_HEADER_1(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \
++ sizeof(struct squashfs_ipc_inode_header_1));\
++ SQUASHFS_SWAP((s)->type, d, 24, 4);\
++ SQUASHFS_SWAP((s)->offset, d, 28, 4);\
++}
++
++#define SQUASHFS_SWAP_DEV_INODE_HEADER_1(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \
++ sizeof(struct squashfs_dev_inode_header_1));\
++ SQUASHFS_SWAP((s)->rdev, d, 24, 16);\
++}
++
++#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_1(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \
++ sizeof(struct squashfs_symlink_inode_header_1));\
++ SQUASHFS_SWAP((s)->symlink_size, d, 24, 16);\
++}
++
++#define SQUASHFS_SWAP_REG_INODE_HEADER_1(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \
++ sizeof(struct squashfs_reg_inode_header_1));\
++ SQUASHFS_SWAP((s)->mtime, d, 24, 32);\
++ SQUASHFS_SWAP((s)->start_block, d, 56, 32);\
++ SQUASHFS_SWAP((s)->file_size, d, 88, 32);\
++}
++
++#define SQUASHFS_SWAP_DIR_INODE_HEADER_1(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_1(s, d, \
++ sizeof(struct squashfs_dir_inode_header_1));\
++ SQUASHFS_SWAP((s)->file_size, d, 24, 19);\
++ SQUASHFS_SWAP((s)->offset, d, 43, 13);\
++ SQUASHFS_SWAP((s)->mtime, d, 56, 32);\
++ SQUASHFS_SWAP((s)->start_block, d, 88, 24);\
++}
++
++#endif
++
++#ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY
++
++struct squashfs_dir_index_2 {
++ unsigned int index:27;
++ unsigned int start_block:29;
++ unsigned char size;
++ unsigned char name[0];
++} __attribute__ ((packed));
++
++struct squashfs_base_inode_header_2 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:8; /* index into uid table */
++ unsigned int guid:8; /* index into guid table */
++} __attribute__ ((packed));
++
++struct squashfs_ipc_inode_header_2 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:8; /* index into uid table */
++ unsigned int guid:8; /* index into guid table */
++} __attribute__ ((packed));
++
++struct squashfs_dev_inode_header_2 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:8; /* index into uid table */
++ unsigned int guid:8; /* index into guid table */
++ unsigned short rdev;
++} __attribute__ ((packed));
++
++struct squashfs_symlink_inode_header_2 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:8; /* index into uid table */
++ unsigned int guid:8; /* index into guid table */
++ unsigned short symlink_size;
++ char symlink[0];
++} __attribute__ ((packed));
++
++struct squashfs_reg_inode_header_2 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:8; /* index into uid table */
++ unsigned int guid:8; /* index into guid table */
++ unsigned int mtime;
++ unsigned int start_block;
++ unsigned int fragment;
++ unsigned int offset;
++ unsigned int file_size:32;
++ unsigned short block_list[0];
++} __attribute__ ((packed));
++
++struct squashfs_dir_inode_header_2 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:8; /* index into uid table */
++ unsigned int guid:8; /* index into guid table */
++ unsigned int file_size:19;
++ unsigned int offset:13;
++ unsigned int mtime;
++ unsigned int start_block:24;
++} __attribute__ ((packed));
++
++struct squashfs_ldir_inode_header_2 {
++ unsigned int inode_type:4;
++ unsigned int mode:12; /* protection */
++ unsigned int uid:8; /* index into uid table */
++ unsigned int guid:8; /* index into guid table */
++ unsigned int file_size:27;
++ unsigned int offset:13;
++ unsigned int mtime;
++ unsigned int start_block:24;
++ unsigned int i_count:16;
++ struct squashfs_dir_index_2 index[0];
++} __attribute__ ((packed));
++
++union squashfs_inode_header_2 {
++ struct squashfs_base_inode_header_2 base;
++ struct squashfs_dev_inode_header_2 dev;
++ struct squashfs_symlink_inode_header_2 symlink;
++ struct squashfs_reg_inode_header_2 reg;
++ struct squashfs_dir_inode_header_2 dir;
++ struct squashfs_ldir_inode_header_2 ldir;
++ struct squashfs_ipc_inode_header_2 ipc;
++};
++
++struct squashfs_dir_header_2 {
++ unsigned int count:8;
++ unsigned int start_block:24;
++} __attribute__ ((packed));
++
++struct squashfs_dir_entry_2 {
++ unsigned int offset:13;
++ unsigned int type:3;
++ unsigned int size:8;
++ char name[0];
++} __attribute__ ((packed));
++
++struct squashfs_fragment_entry_2 {
++ unsigned int start_block;
++ unsigned int size;
++} __attribute__ ((packed));
++
++#define SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, n)\
++ SQUASHFS_MEMSET(s, d, n);\
++ SQUASHFS_SWAP((s)->inode_type, d, 0, 4);\
++ SQUASHFS_SWAP((s)->mode, d, 4, 12);\
++ SQUASHFS_SWAP((s)->uid, d, 16, 8);\
++ SQUASHFS_SWAP((s)->guid, d, 24, 8);\
++
++#define SQUASHFS_SWAP_BASE_INODE_HEADER_2(s, d, n) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, n)\
++}
++
++#define SQUASHFS_SWAP_IPC_INODE_HEADER_2(s, d) \
++ SQUASHFS_SWAP_BASE_INODE_HEADER_2(s, d, sizeof(struct squashfs_ipc_inode_header_2))
++
++#define SQUASHFS_SWAP_DEV_INODE_HEADER_2(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \
++ sizeof(struct squashfs_dev_inode_header_2)); \
++ SQUASHFS_SWAP((s)->rdev, d, 32, 16);\
++}
++
++#define SQUASHFS_SWAP_SYMLINK_INODE_HEADER_2(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \
++ sizeof(struct squashfs_symlink_inode_header_2));\
++ SQUASHFS_SWAP((s)->symlink_size, d, 32, 16);\
++}
++
++#define SQUASHFS_SWAP_REG_INODE_HEADER_2(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \
++ sizeof(struct squashfs_reg_inode_header_2));\
++ SQUASHFS_SWAP((s)->mtime, d, 32, 32);\
++ SQUASHFS_SWAP((s)->start_block, d, 64, 32);\
++ SQUASHFS_SWAP((s)->fragment, d, 96, 32);\
++ SQUASHFS_SWAP((s)->offset, d, 128, 32);\
++ SQUASHFS_SWAP((s)->file_size, d, 160, 32);\
++}
++
++#define SQUASHFS_SWAP_DIR_INODE_HEADER_2(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \
++ sizeof(struct squashfs_dir_inode_header_2));\
++ SQUASHFS_SWAP((s)->file_size, d, 32, 19);\
++ SQUASHFS_SWAP((s)->offset, d, 51, 13);\
++ SQUASHFS_SWAP((s)->mtime, d, 64, 32);\
++ SQUASHFS_SWAP((s)->start_block, d, 96, 24);\
++}
++
++#define SQUASHFS_SWAP_LDIR_INODE_HEADER_2(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_SWAP_BASE_INODE_CORE_2(s, d, \
++ sizeof(struct squashfs_ldir_inode_header_2));\
++ SQUASHFS_SWAP((s)->file_size, d, 32, 27);\
++ SQUASHFS_SWAP((s)->offset, d, 59, 13);\
++ SQUASHFS_SWAP((s)->mtime, d, 72, 32);\
++ SQUASHFS_SWAP((s)->start_block, d, 104, 24);\
++ SQUASHFS_SWAP((s)->i_count, d, 128, 16);\
++}
++
++#define SQUASHFS_SWAP_DIR_INDEX_2(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_index_2));\
++ SQUASHFS_SWAP((s)->index, d, 0, 27);\
++ SQUASHFS_SWAP((s)->start_block, d, 27, 29);\
++ SQUASHFS_SWAP((s)->size, d, 56, 8);\
++}
++#define SQUASHFS_SWAP_DIR_HEADER_2(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_header_2));\
++ SQUASHFS_SWAP((s)->count, d, 0, 8);\
++ SQUASHFS_SWAP((s)->start_block, d, 8, 24);\
++}
++
++#define SQUASHFS_SWAP_DIR_ENTRY_2(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_dir_entry_2));\
++ SQUASHFS_SWAP((s)->offset, d, 0, 13);\
++ SQUASHFS_SWAP((s)->type, d, 13, 3);\
++ SQUASHFS_SWAP((s)->size, d, 16, 8);\
++}
++
++#define SQUASHFS_SWAP_FRAGMENT_ENTRY_2(s, d) {\
++ SQUASHFS_SWAP_START\
++ SQUASHFS_MEMSET(s, d, sizeof(struct squashfs_fragment_entry_2));\
++ SQUASHFS_SWAP((s)->start_block, d, 0, 32);\
++ SQUASHFS_SWAP((s)->size, d, 32, 32);\
++}
++
++#define SQUASHFS_SWAP_FRAGMENT_INDEXES_2(s, d, n) SQUASHFS_SWAP_INTS(s, d, n)
++
++/* fragment and fragment table defines */
++#define SQUASHFS_FRAGMENT_BYTES_2(A) (A * sizeof(struct squashfs_fragment_entry_2))
++
++#define SQUASHFS_FRAGMENT_INDEX_2(A) (SQUASHFS_FRAGMENT_BYTES_2(A) / \
++ SQUASHFS_METADATA_SIZE)
++
++#define SQUASHFS_FRAGMENT_INDEX_OFFSET_2(A) (SQUASHFS_FRAGMENT_BYTES_2(A) % \
++ SQUASHFS_METADATA_SIZE)
++
++#define SQUASHFS_FRAGMENT_INDEXES_2(A) ((SQUASHFS_FRAGMENT_BYTES_2(A) + \
++ SQUASHFS_METADATA_SIZE - 1) / \
++ SQUASHFS_METADATA_SIZE)
++
++#define SQUASHFS_FRAGMENT_INDEX_BYTES_2(A) (SQUASHFS_FRAGMENT_INDEXES_2(A) *\
++ sizeof(int))
++
++#endif
++
++#ifdef __KERNEL__
++
++/*
++ * macros used to swap each structure entry, taking into account
++ * bitfields and different bitfield placing conventions on differing
++ * architectures
++ */
++
++#include <asm/byteorder.h>
++
++#ifdef __BIG_ENDIAN
++ /* convert from little endian to big endian */
++#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, \
++ tbits, b_pos)
++#else
++ /* convert from big endian to little endian */
++#define SQUASHFS_SWAP(value, p, pos, tbits) _SQUASHFS_SWAP(value, p, pos, \
++ tbits, 64 - tbits - b_pos)
++#endif
++
++#define _SQUASHFS_SWAP(value, p, pos, tbits, SHIFT) {\
++ b_pos = pos % 8;\
++ val = 0;\
++ s = (unsigned char *)p + (pos / 8);\
++ d = ((unsigned char *) &val) + 7;\
++ for(bits = 0; bits < (tbits + b_pos); bits += 8) \
++ *d-- = *s++;\
++ value = (val >> (SHIFT))/* & ((1 << tbits) - 1)*/;\
++}
++
++#define SQUASHFS_MEMSET(s, d, n) memset(s, 0, n);
++
++#endif
++#endif
+diff -urN linux-2.6.22.4/include/linux/squashfs_fs_i.h linux-2.6.22.4-squashfs/include/linux/squashfs_fs_i.h
+--- linux-2.6.22.4/include/linux/squashfs_fs_i.h 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.22.4-squashfs/include/linux/squashfs_fs_i.h 2007-09-20 19:13:44.000000000 +0200
+@@ -0,0 +1,45 @@
++#ifndef SQUASHFS_FS_I
++#define SQUASHFS_FS_I
++/*
++ * Squashfs
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005, 2006
++ * Phillip Lougher <phillip@lougher.org.uk>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2,
++ * or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * squashfs_fs_i.h
++ */
++
++struct squashfs_inode_info {
++ long long start_block;
++ unsigned int offset;
++ union {
++ struct {
++ long long fragment_start_block;
++ unsigned int fragment_size;
++ unsigned int fragment_offset;
++ long long block_list_start;
++ } s1;
++ struct {
++ long long directory_index_start;
++ unsigned int directory_index_offset;
++ unsigned int directory_index_count;
++ unsigned int parent_inode;
++ } s2;
++ } u;
++ struct inode vfs_inode;
++};
++#endif
+diff -urN linux-2.6.22.4/include/linux/squashfs_fs_sb.h linux-2.6.22.4-squashfs/include/linux/squashfs_fs_sb.h
+--- linux-2.6.22.4/include/linux/squashfs_fs_sb.h 1970-01-01 01:00:00.000000000 +0100
++++ linux-2.6.22.4-squashfs/include/linux/squashfs_fs_sb.h 2007-09-20 19:13:44.000000000 +0200
+@@ -0,0 +1,74 @@
++#ifndef SQUASHFS_FS_SB
++#define SQUASHFS_FS_SB
++/*
++ * Squashfs
++ *
++ * Copyright (c) 2002, 2003, 2004, 2005, 2006
++ * Phillip Lougher <phillip@lougher.org.uk>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version 2,
++ * or (at your option) any later version.
++ *
++ * This program is distributed in the hope that it will be useful,
++ * but WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
++ * GNU General Public License for more details.
++ *
++ * You should have received a copy of the GNU General Public License
++ * along with this program; if not, write to the Free Software
++ * Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
++ *
++ * squashfs_fs_sb.h
++ */
++
++#include <linux/squashfs_fs.h>
++
++struct squashfs_cache {
++ long long block;
++ int length;
++ long long next_index;
++ char *data;
++};
++
++struct squashfs_fragment_cache {
++ long long block;
++ int length;
++ unsigned int locked;
++ char *data;
++};
++
++struct squashfs_sb_info {
++ struct squashfs_super_block sblk;
++ int devblksize;
++ int devblksize_log2;
++ int swap;
++ struct squashfs_cache *block_cache;
++ struct squashfs_fragment_cache *fragment;
++ int next_cache;
++ int next_fragment;
++ int next_meta_index;
++ unsigned int *uid;
++ unsigned int *guid;
++ long long *fragment_index;
++ unsigned int *fragment_index_2;
++ unsigned int read_size;
++ char *read_data;
++ char *read_page;
++ struct semaphore read_data_mutex;
++ struct semaphore read_page_mutex;
++ struct semaphore block_cache_mutex;
++ struct semaphore fragment_mutex;
++ struct semaphore meta_index_mutex;
++ wait_queue_head_t waitq;
++ wait_queue_head_t fragment_wait_queue;
++ struct meta_index *meta_index;
++ struct inode *(*iget)(struct super_block *s, squashfs_inode_t \
++ inode);
++ long long (*read_blocklist)(struct inode *inode, int \
++ index, int readahead_blks, char *block_list, \
++ unsigned short **block_p, unsigned int *bsize);
++ int (*read_fragment_index_table)(struct super_block *s);
++};
++#endif
+diff -urN linux-2.6.22.4/init/do_mounts_rd.c linux-2.6.22.4-squashfs/init/do_mounts_rd.c
+--- linux-2.6.22.4/init/do_mounts_rd.c 2007-08-21 06:33:06.000000000 +0200
++++ linux-2.6.22.4-squashfs/init/do_mounts_rd.c 2007-09-20 19:13:44.000000000 +0200
+@@ -5,6 +5,7 @@
+ #include <linux/ext2_fs.h>
+ #include <linux/romfs_fs.h>
+ #include <linux/cramfs_fs.h>
++#include <linux/squashfs_fs.h>
+ #include <linux/initrd.h>
+ #include <linux/string.h>
+
+@@ -39,6 +40,7 @@
+ * numbers could not be found.
+ *
+ * We currently check for the following magic numbers:
++ * squashfs
+ * minix
+ * ext2
+ * romfs
+@@ -53,6 +55,7 @@
+ struct ext2_super_block *ext2sb;
+ struct romfs_super_block *romfsb;
+ struct cramfs_super *cramfsb;
++ struct squashfs_super_block *squashfsb;
+ int nblocks = -1;
+ unsigned char *buf;
+
+@@ -64,6 +67,7 @@
+ ext2sb = (struct ext2_super_block *) buf;
+ romfsb = (struct romfs_super_block *) buf;
+ cramfsb = (struct cramfs_super *) buf;
++ squashfsb = (struct squashfs_super_block *) buf;
+ memset(buf, 0xe5, size);
+
+ /*
+@@ -101,6 +105,15 @@
+ goto done;
+ }
+
++ /* squashfs is at block zero too */
++ if (squashfsb->s_magic == SQUASHFS_MAGIC) {
++ printk(KERN_NOTICE
++ "RAMDISK: squashfs filesystem found at block %d\n",
++ start_block);
++ nblocks = (squashfsb->bytes_used+BLOCK_SIZE-1)>>BLOCK_SIZE_BITS;
++ goto done;
++ }
++
+ /*
+ * Read block 1 to test for minix and ext2 superblock
+ */
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/LzmaDecode.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/LzmaDecode.h 2007-09-21 16:23:55.000000000 +0800
+@@ -0,0 +1,100 @@
++/*
++ LzmaDecode.h
++ LZMA Decoder interface
++
++ LZMA SDK 4.05 Copyright (c) 1999-2004 Igor Pavlov (2004-08-25)
++ http://www.7-zip.org/
++
++ LZMA SDK is licensed under two licenses:
++ 1) GNU Lesser General Public License (GNU LGPL)
++ 2) Common Public License (CPL)
++ It means that you can select one of these two licenses and
++ follow rules of that license.
++
++ SPECIAL EXCEPTION:
++ Igor Pavlov, as the author of this code, expressly permits you to
++ statically or dynamically link your code (or bind by name) to the
++ interfaces of this file without subjecting your linked code to the
++ terms of the CPL or GNU LGPL. Any modifications or additions
++ to this file, however, are subject to the LGPL or CPL terms.
++*/
++
++#ifndef __LZMADECODE_H
++#define __LZMADECODE_H
++
++/* #define _LZMA_IN_CB */
++/* Use callback for input data */
++
++/* #define _LZMA_OUT_READ */
++/* Use read function for output data */
++
++/* #define _LZMA_PROB32 */
++/* It can increase speed on some 32-bit CPUs,
++ but memory usage will be doubled in that case */
++
++/* #define _LZMA_LOC_OPT */
++/* Enable local speed optimizations inside code */
++
++#ifndef UInt32
++#ifdef _LZMA_UINT32_IS_ULONG
++#define UInt32 unsigned long
++#else
++#define UInt32 unsigned int
++#endif
++#endif
++
++#ifdef _LZMA_PROB32
++#define CProb UInt32
++#else
++#define CProb unsigned short
++#endif
++
++#define LZMA_RESULT_OK 0
++#define LZMA_RESULT_DATA_ERROR 1
++#define LZMA_RESULT_NOT_ENOUGH_MEM 2
++
++#ifdef _LZMA_IN_CB
++typedef struct _ILzmaInCallback
++{
++ int (*Read)(void *object, unsigned char **buffer, UInt32 *bufferSize);
++} ILzmaInCallback;
++#endif
++
++#define LZMA_BASE_SIZE 1846
++#define LZMA_LIT_SIZE 768
++
++/*
++bufferSize = (LZMA_BASE_SIZE + (LZMA_LIT_SIZE << (lc + lp)))* sizeof(CProb)
++bufferSize += 100 in case of _LZMA_OUT_READ
++by default CProb is unsigned short,
++but if specify _LZMA_PROB_32, CProb will be UInt32(unsigned int)
++*/
++
++#ifdef _LZMA_OUT_READ
++int LzmaDecoderInit(
++ unsigned char *buffer, UInt32 bufferSize,
++ int lc, int lp, int pb,
++ unsigned char *dictionary, UInt32 dictionarySize,
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *inCallback
++ #else
++ unsigned char *inStream, UInt32 inSize
++ #endif
++);
++#endif
++
++int LzmaDecode(
++ unsigned char *buffer,
++ #ifndef _LZMA_OUT_READ
++ UInt32 bufferSize,
++ int lc, int lp, int pb,
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *inCallback,
++ #else
++ unsigned char *inStream, UInt32 inSize,
++ #endif
++ #endif
++ unsigned char *outStream, UInt32 outSize,
++ UInt32 *outSizeProcessed);
++
++#endif
+Index: linux-2.6.23-rc6/lib/LzmaDecode.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/lib/LzmaDecode.c 2007-09-21 16:23:55.000000000 +0800
+@@ -0,0 +1,663 @@
++/*
++ LzmaDecode.c
++ LZMA Decoder
++
++ LZMA SDK 4.05 Copyright (c) 1999-2004 Igor Pavlov (2004-08-25)
++ http://www.7-zip.org/
++
++ LZMA SDK is licensed under two licenses:
++ 1) GNU Lesser General Public License (GNU LGPL)
++ 2) Common Public License (CPL)
++ It means that you can select one of these two licenses and
++ follow rules of that license.
++
++ SPECIAL EXCEPTION:
++ Igor Pavlov, as the author of this code, expressly permits you to
++ statically or dynamically link your code (or bind by name) to the
++ interfaces of this file without subjecting your linked code to the
++ terms of the CPL or GNU LGPL. Any modifications or additions
++ to this file, however, are subject to the LGPL or CPL terms.
++*/
++
++#include <linux/LzmaDecode.h>
++
++#ifndef Byte
++#define Byte unsigned char
++#endif
++
++#define kNumTopBits 24
++#define kTopValue ((UInt32)1 << kNumTopBits)
++
++#define kNumBitModelTotalBits 11
++#define kBitModelTotal (1 << kNumBitModelTotalBits)
++#define kNumMoveBits 5
++
++typedef struct _CRangeDecoder
++{
++ Byte *Buffer;
++ Byte *BufferLim;
++ UInt32 Range;
++ UInt32 Code;
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *InCallback;
++ int Result;
++ #endif
++ int ExtraBytes;
++} CRangeDecoder;
++
++Byte RangeDecoderReadByte(CRangeDecoder *rd)
++{
++ if (rd->Buffer == rd->BufferLim)
++ {
++ #ifdef _LZMA_IN_CB
++ UInt32 size;
++ rd->Result = rd->InCallback->Read(rd->InCallback, &rd->Buffer, &size);
++ rd->BufferLim = rd->Buffer + size;
++ if (size == 0)
++ #endif
++ {
++ rd->ExtraBytes = 1;
++ return 0xFF;
++ }
++ }
++ return (*rd->Buffer++);
++}
++
++/* #define ReadByte (*rd->Buffer++) */
++#define ReadByte (RangeDecoderReadByte(rd))
++
++void RangeDecoderInit(CRangeDecoder *rd,
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *inCallback
++ #else
++ Byte *stream, UInt32 bufferSize
++ #endif
++ )
++{
++ int i;
++ #ifdef _LZMA_IN_CB
++ rd->InCallback = inCallback;
++ rd->Buffer = rd->BufferLim = 0;
++ #else
++ rd->Buffer = stream;
++ rd->BufferLim = stream + bufferSize;
++ #endif
++ rd->ExtraBytes = 0;
++ rd->Code = 0;
++ rd->Range = (0xFFFFFFFF);
++ for(i = 0; i < 5; i++)
++ rd->Code = (rd->Code << 8) | ReadByte;
++}
++
++#define RC_INIT_VAR UInt32 range = rd->Range; UInt32 code = rd->Code;
++#define RC_FLUSH_VAR rd->Range = range; rd->Code = code;
++#define RC_NORMALIZE if (range < kTopValue) { range <<= 8; code = (code << 8) | ReadByte; }
++
++UInt32 RangeDecoderDecodeDirectBits(CRangeDecoder *rd, int numTotalBits)
++{
++ RC_INIT_VAR
++ UInt32 result = 0;
++ int i;
++ for (i = numTotalBits; i > 0; i--)
++ {
++ /* UInt32 t; */
++ range >>= 1;
++
++ result <<= 1;
++ if (code >= range)
++ {
++ code -= range;
++ result |= 1;
++ }
++ /*
++ t = (code - range) >> 31;
++ t &= 1;
++ code -= range & (t - 1);
++ result = (result + result) | (1 - t);
++ */
++ RC_NORMALIZE
++ }
++ RC_FLUSH_VAR
++ return result;
++}
++
++int RangeDecoderBitDecode(CProb *prob, CRangeDecoder *rd)
++{
++ UInt32 bound = (rd->Range >> kNumBitModelTotalBits) * *prob;
++ if (rd->Code < bound)
++ {
++ rd->Range = bound;
++ *prob += (kBitModelTotal - *prob) >> kNumMoveBits;
++ if (rd->Range < kTopValue)
++ {
++ rd->Code = (rd->Code << 8) | ReadByte;
++ rd->Range <<= 8;
++ }
++ return 0;
++ }
++ else
++ {
++ rd->Range -= bound;
++ rd->Code -= bound;
++ *prob -= (*prob) >> kNumMoveBits;
++ if (rd->Range < kTopValue)
++ {
++ rd->Code = (rd->Code << 8) | ReadByte;
++ rd->Range <<= 8;
++ }
++ return 1;
++ }
++}
++
++#define RC_GET_BIT2(prob, mi, A0, A1) \
++ UInt32 bound = (range >> kNumBitModelTotalBits) * *prob; \
++ if (code < bound) \
++ { A0; range = bound; *prob += (kBitModelTotal - *prob) >> kNumMoveBits; mi <<= 1; } \
++ else \
++ { A1; range -= bound; code -= bound; *prob -= (*prob) >> kNumMoveBits; mi = (mi + mi) + 1; } \
++ RC_NORMALIZE
++
++#define RC_GET_BIT(prob, mi) RC_GET_BIT2(prob, mi, ; , ;)
++
++int RangeDecoderBitTreeDecode(CProb *probs, int numLevels, CRangeDecoder *rd)
++{
++ int mi = 1;
++ int i;
++ #ifdef _LZMA_LOC_OPT
++ RC_INIT_VAR
++ #endif
++ for(i = numLevels; i > 0; i--)
++ {
++ #ifdef _LZMA_LOC_OPT
++ CProb *prob = probs + mi;
++ RC_GET_BIT(prob, mi)
++ #else
++ mi = (mi + mi) + RangeDecoderBitDecode(probs + mi, rd);
++ #endif
++ }
++ #ifdef _LZMA_LOC_OPT
++ RC_FLUSH_VAR
++ #endif
++ return mi - (1 << numLevels);
++}
++
++int RangeDecoderReverseBitTreeDecode(CProb *probs, int numLevels, CRangeDecoder *rd)
++{
++ int mi = 1;
++ int i;
++ int symbol = 0;
++ #ifdef _LZMA_LOC_OPT
++ RC_INIT_VAR
++ #endif
++ for(i = 0; i < numLevels; i++)
++ {
++ #ifdef _LZMA_LOC_OPT
++ CProb *prob = probs + mi;
++ RC_GET_BIT2(prob, mi, ; , symbol |= (1 << i))
++ #else
++ int bit = RangeDecoderBitDecode(probs + mi, rd);
++ mi = mi + mi + bit;
++ symbol |= (bit << i);
++ #endif
++ }
++ #ifdef _LZMA_LOC_OPT
++ RC_FLUSH_VAR
++ #endif
++ return symbol;
++}
++
++Byte LzmaLiteralDecode(CProb *probs, CRangeDecoder *rd)
++{
++ int symbol = 1;
++ #ifdef _LZMA_LOC_OPT
++ RC_INIT_VAR
++ #endif
++ do
++ {
++ #ifdef _LZMA_LOC_OPT
++ CProb *prob = probs + symbol;
++ RC_GET_BIT(prob, symbol)
++ #else
++ symbol = (symbol + symbol) | RangeDecoderBitDecode(probs + symbol, rd);
++ #endif
++ }
++ while (symbol < 0x100);
++ #ifdef _LZMA_LOC_OPT
++ RC_FLUSH_VAR
++ #endif
++ return symbol;
++}
++
++Byte LzmaLiteralDecodeMatch(CProb *probs, CRangeDecoder *rd, Byte matchByte)
++{
++ int symbol = 1;
++ #ifdef _LZMA_LOC_OPT
++ RC_INIT_VAR
++ #endif
++ do
++ {
++ int bit;
++ int matchBit = (matchByte >> 7) & 1;
++ matchByte <<= 1;
++ #ifdef _LZMA_LOC_OPT
++ {
++ CProb *prob = probs + ((1 + matchBit) << 8) + symbol;
++ RC_GET_BIT2(prob, symbol, bit = 0, bit = 1)
++ }
++ #else
++ bit = RangeDecoderBitDecode(probs + ((1 + matchBit) << 8) + symbol, rd);
++ symbol = (symbol << 1) | bit;
++ #endif
++ if (matchBit != bit)
++ {
++ while (symbol < 0x100)
++ {
++ #ifdef _LZMA_LOC_OPT
++ CProb *prob = probs + symbol;
++ RC_GET_BIT(prob, symbol)
++ #else
++ symbol = (symbol + symbol) | RangeDecoderBitDecode(probs + symbol, rd);
++ #endif
++ }
++ break;
++ }
++ }
++ while (symbol < 0x100);
++ #ifdef _LZMA_LOC_OPT
++ RC_FLUSH_VAR
++ #endif
++ return symbol;
++}
++
++#define kNumPosBitsMax 4
++#define kNumPosStatesMax (1 << kNumPosBitsMax)
++
++#define kLenNumLowBits 3
++#define kLenNumLowSymbols (1 << kLenNumLowBits)
++#define kLenNumMidBits 3
++#define kLenNumMidSymbols (1 << kLenNumMidBits)
++#define kLenNumHighBits 8
++#define kLenNumHighSymbols (1 << kLenNumHighBits)
++
++#define LenChoice 0
++#define LenChoice2 (LenChoice + 1)
++#define LenLow (LenChoice2 + 1)
++#define LenMid (LenLow + (kNumPosStatesMax << kLenNumLowBits))
++#define LenHigh (LenMid + (kNumPosStatesMax << kLenNumMidBits))
++#define kNumLenProbs (LenHigh + kLenNumHighSymbols)
++
++int LzmaLenDecode(CProb *p, CRangeDecoder *rd, int posState)
++{
++ if(RangeDecoderBitDecode(p + LenChoice, rd) == 0)
++ return RangeDecoderBitTreeDecode(p + LenLow +
++ (posState << kLenNumLowBits), kLenNumLowBits, rd);
++ if(RangeDecoderBitDecode(p + LenChoice2, rd) == 0)
++ return kLenNumLowSymbols + RangeDecoderBitTreeDecode(p + LenMid +
++ (posState << kLenNumMidBits), kLenNumMidBits, rd);
++ return kLenNumLowSymbols + kLenNumMidSymbols +
++ RangeDecoderBitTreeDecode(p + LenHigh, kLenNumHighBits, rd);
++}
++
++#define kNumStates 12
++
++#define kStartPosModelIndex 4
++#define kEndPosModelIndex 14
++#define kNumFullDistances (1 << (kEndPosModelIndex >> 1))
++
++#define kNumPosSlotBits 6
++#define kNumLenToPosStates 4
++
++#define kNumAlignBits 4
++#define kAlignTableSize (1 << kNumAlignBits)
++
++#define kMatchMinLen 2
++
++#define IsMatch 0
++#define IsRep (IsMatch + (kNumStates << kNumPosBitsMax))
++#define IsRepG0 (IsRep + kNumStates)
++#define IsRepG1 (IsRepG0 + kNumStates)
++#define IsRepG2 (IsRepG1 + kNumStates)
++#define IsRep0Long (IsRepG2 + kNumStates)
++#define PosSlot (IsRep0Long + (kNumStates << kNumPosBitsMax))
++#define SpecPos (PosSlot + (kNumLenToPosStates << kNumPosSlotBits))
++#define Align (SpecPos + kNumFullDistances - kEndPosModelIndex)
++#define LenCoder (Align + kAlignTableSize)
++#define RepLenCoder (LenCoder + kNumLenProbs)
++#define Literal (RepLenCoder + kNumLenProbs)
++
++#if Literal != LZMA_BASE_SIZE
++StopCompilingDueBUG
++#endif
++
++#ifdef _LZMA_OUT_READ
++
++typedef struct _LzmaVarState
++{
++ CRangeDecoder RangeDecoder;
++ Byte *Dictionary;
++ UInt32 DictionarySize;
++ UInt32 DictionaryPos;
++ UInt32 GlobalPos;
++ UInt32 Reps[4];
++ int lc;
++ int lp;
++ int pb;
++ int State;
++ int PreviousIsMatch;
++ int RemainLen;
++} LzmaVarState;
++
++int LzmaDecoderInit(
++ unsigned char *buffer, UInt32 bufferSize,
++ int lc, int lp, int pb,
++ unsigned char *dictionary, UInt32 dictionarySize,
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *inCallback
++ #else
++ unsigned char *inStream, UInt32 inSize
++ #endif
++ )
++{
++ LzmaVarState *vs = (LzmaVarState *)buffer;
++ CProb *p = (CProb *)(buffer + sizeof(LzmaVarState));
++ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp));
++ UInt32 i;
++ if (bufferSize < numProbs * sizeof(CProb) + sizeof(LzmaVarState))
++ return LZMA_RESULT_NOT_ENOUGH_MEM;
++ vs->Dictionary = dictionary;
++ vs->DictionarySize = dictionarySize;
++ vs->DictionaryPos = 0;
++ vs->GlobalPos = 0;
++ vs->Reps[0] = vs->Reps[1] = vs->Reps[2] = vs->Reps[3] = 1;
++ vs->lc = lc;
++ vs->lp = lp;
++ vs->pb = pb;
++ vs->State = 0;
++ vs->PreviousIsMatch = 0;
++ vs->RemainLen = 0;
++ dictionary[dictionarySize - 1] = 0;
++ for (i = 0; i < numProbs; i++)
++ p[i] = kBitModelTotal >> 1;
++ RangeDecoderInit(&vs->RangeDecoder,
++ #ifdef _LZMA_IN_CB
++ inCallback
++ #else
++ inStream, inSize
++ #endif
++ );
++ return LZMA_RESULT_OK;
++}
++
++int LzmaDecode(unsigned char *buffer,
++ unsigned char *outStream, UInt32 outSize,
++ UInt32 *outSizeProcessed)
++{
++ LzmaVarState *vs = (LzmaVarState *)buffer;
++ CProb *p = (CProb *)(buffer + sizeof(LzmaVarState));
++ CRangeDecoder rd = vs->RangeDecoder;
++ int state = vs->State;
++ int previousIsMatch = vs->PreviousIsMatch;
++ Byte previousByte;
++ UInt32 rep0 = vs->Reps[0], rep1 = vs->Reps[1], rep2 = vs->Reps[2], rep3 = vs->Reps[3];
++ UInt32 nowPos = 0;
++ UInt32 posStateMask = (1 << (vs->pb)) - 1;
++ UInt32 literalPosMask = (1 << (vs->lp)) - 1;
++ int lc = vs->lc;
++ int len = vs->RemainLen;
++ UInt32 globalPos = vs->GlobalPos;
++
++ Byte *dictionary = vs->Dictionary;
++ UInt32 dictionarySize = vs->DictionarySize;
++ UInt32 dictionaryPos = vs->DictionaryPos;
++
++ if (len == -1)
++ {
++ *outSizeProcessed = 0;
++ return LZMA_RESULT_OK;
++ }
++
++ while(len > 0 && nowPos < outSize)
++ {
++ UInt32 pos = dictionaryPos - rep0;
++ if (pos >= dictionarySize)
++ pos += dictionarySize;
++ outStream[nowPos++] = dictionary[dictionaryPos] = dictionary[pos];
++ if (++dictionaryPos == dictionarySize)
++ dictionaryPos = 0;
++ len--;
++ }
++ if (dictionaryPos == 0)
++ previousByte = dictionary[dictionarySize - 1];
++ else
++ previousByte = dictionary[dictionaryPos - 1];
++#else
++
++int LzmaDecode(
++ Byte *buffer, UInt32 bufferSize,
++ int lc, int lp, int pb,
++ #ifdef _LZMA_IN_CB
++ ILzmaInCallback *inCallback,
++ #else
++ unsigned char *inStream, UInt32 inSize,
++ #endif
++ unsigned char *outStream, UInt32 outSize,
++ UInt32 *outSizeProcessed)
++{
++ UInt32 numProbs = Literal + ((UInt32)LZMA_LIT_SIZE << (lc + lp));
++ CProb *p = (CProb *)buffer;
++ CRangeDecoder rd;
++ UInt32 i;
++ int state = 0;
++ int previousIsMatch = 0;
++ Byte previousByte = 0;
++ UInt32 rep0 = 1, rep1 = 1, rep2 = 1, rep3 = 1;
++ UInt32 nowPos = 0;
++ UInt32 posStateMask = (1 << pb) - 1;
++ UInt32 literalPosMask = (1 << lp) - 1;
++ int len = 0;
++ if (bufferSize < numProbs * sizeof(CProb))
++ return LZMA_RESULT_NOT_ENOUGH_MEM;
++ for (i = 0; i < numProbs; i++)
++ p[i] = kBitModelTotal >> 1;
++ RangeDecoderInit(&rd,
++ #ifdef _LZMA_IN_CB
++ inCallback
++ #else
++ inStream, inSize
++ #endif
++ );
++#endif
++
++ *outSizeProcessed = 0;
++ while(nowPos < outSize)
++ {
++ int posState = (int)(
++ (nowPos
++ #ifdef _LZMA_OUT_READ
++ + globalPos
++ #endif
++ )
++ & posStateMask);
++ #ifdef _LZMA_IN_CB
++ if (rd.Result != LZMA_RESULT_OK)
++ return rd.Result;
++ #endif
++ if (rd.ExtraBytes != 0)
++ return LZMA_RESULT_DATA_ERROR;
++ if (RangeDecoderBitDecode(p + IsMatch + (state << kNumPosBitsMax) + posState, &rd) == 0)
++ {
++ CProb *probs = p + Literal + (LZMA_LIT_SIZE *
++ (((
++ (nowPos
++ #ifdef _LZMA_OUT_READ
++ + globalPos
++ #endif
++ )
++ & literalPosMask) << lc) + (previousByte >> (8 - lc))));
++
++ if (state < 4) state = 0;
++ else if (state < 10) state -= 3;
++ else state -= 6;
++ if (previousIsMatch)
++ {
++ Byte matchByte;
++ #ifdef _LZMA_OUT_READ
++ UInt32 pos = dictionaryPos - rep0;
++ if (pos >= dictionarySize)
++ pos += dictionarySize;
++ matchByte = dictionary[pos];
++ #else
++ matchByte = outStream[nowPos - rep0];
++ #endif
++ previousByte = LzmaLiteralDecodeMatch(probs, &rd, matchByte);
++ previousIsMatch = 0;
++ }
++ else
++ previousByte = LzmaLiteralDecode(probs, &rd);
++ outStream[nowPos++] = previousByte;
++ #ifdef _LZMA_OUT_READ
++ dictionary[dictionaryPos] = previousByte;
++ if (++dictionaryPos == dictionarySize)
++ dictionaryPos = 0;
++ #endif
++ }
++ else
++ {
++ previousIsMatch = 1;
++ if (RangeDecoderBitDecode(p + IsRep + state, &rd) == 1)
++ {
++ if (RangeDecoderBitDecode(p + IsRepG0 + state, &rd) == 0)
++ {
++ if (RangeDecoderBitDecode(p + IsRep0Long + (state << kNumPosBitsMax) + posState, &rd) == 0)
++ {
++ #ifdef _LZMA_OUT_READ
++ UInt32 pos;
++ #endif
++ if (
++ (nowPos
++ #ifdef _LZMA_OUT_READ
++ + globalPos
++ #endif
++ )
++ == 0)
++ return LZMA_RESULT_DATA_ERROR;
++ state = state < 7 ? 9 : 11;
++ #ifdef _LZMA_OUT_READ
++ pos = dictionaryPos - rep0;
++ if (pos >= dictionarySize)
++ pos += dictionarySize;
++ previousByte = dictionary[pos];
++ dictionary[dictionaryPos] = previousByte;
++ if (++dictionaryPos == dictionarySize)
++ dictionaryPos = 0;
++ #else
++ previousByte = outStream[nowPos - rep0];
++ #endif
++ outStream[nowPos++] = previousByte;
++ continue;
++ }
++ }
++ else
++ {
++ UInt32 distance;
++ if(RangeDecoderBitDecode(p + IsRepG1 + state, &rd) == 0)
++ distance = rep1;
++ else
++ {
++ if(RangeDecoderBitDecode(p + IsRepG2 + state, &rd) == 0)
++ distance = rep2;
++ else
++ {
++ distance = rep3;
++ rep3 = rep2;
++ }
++ rep2 = rep1;
++ }
++ rep1 = rep0;
++ rep0 = distance;
++ }
++ len = LzmaLenDecode(p + RepLenCoder, &rd, posState);
++ state = state < 7 ? 8 : 11;
++ }
++ else
++ {
++ int posSlot;
++ rep3 = rep2;
++ rep2 = rep1;
++ rep1 = rep0;
++ state = state < 7 ? 7 : 10;
++ len = LzmaLenDecode(p + LenCoder, &rd, posState);
++ posSlot = RangeDecoderBitTreeDecode(p + PosSlot +
++ ((len < kNumLenToPosStates ? len : kNumLenToPosStates - 1) <<
++ kNumPosSlotBits), kNumPosSlotBits, &rd);
++ if (posSlot >= kStartPosModelIndex)
++ {
++ int numDirectBits = ((posSlot >> 1) - 1);
++ rep0 = ((2 | ((UInt32)posSlot & 1)) << numDirectBits);
++ if (posSlot < kEndPosModelIndex)
++ {
++ rep0 += RangeDecoderReverseBitTreeDecode(
++ p + SpecPos + rep0 - posSlot - 1, numDirectBits, &rd);
++ }
++ else
++ {
++ rep0 += RangeDecoderDecodeDirectBits(&rd,
++ numDirectBits - kNumAlignBits) << kNumAlignBits;
++ rep0 += RangeDecoderReverseBitTreeDecode(p + Align, kNumAlignBits, &rd);
++ }
++ }
++ else
++ rep0 = posSlot;
++ rep0++;
++ }
++ if (rep0 == (UInt32)(0))
++ {
++ /* it's for stream version */
++ len = -1;
++ break;
++ }
++ if (rep0 > nowPos
++ #ifdef _LZMA_OUT_READ
++ + globalPos
++ #endif
++ )
++ {
++ return LZMA_RESULT_DATA_ERROR;
++ }
++ len += kMatchMinLen;
++ do
++ {
++ #ifdef _LZMA_OUT_READ
++ UInt32 pos = dictionaryPos - rep0;
++ if (pos >= dictionarySize)
++ pos += dictionarySize;
++ previousByte = dictionary[pos];
++ dictionary[dictionaryPos] = previousByte;
++ if (++dictionaryPos == dictionarySize)
++ dictionaryPos = 0;
++ #else
++ previousByte = outStream[nowPos - rep0];
++ #endif
++ outStream[nowPos++] = previousByte;
++ len--;
++ }
++ while(len > 0 && nowPos < outSize);
++ }
++ }
++
++ #ifdef _LZMA_OUT_READ
++ vs->RangeDecoder = rd;
++ vs->DictionaryPos = dictionaryPos;
++ vs->GlobalPos = globalPos + nowPos;
++ vs->Reps[0] = rep0;
++ vs->Reps[1] = rep1;
++ vs->Reps[2] = rep2;
++ vs->Reps[3] = rep3;
++ vs->State = state;
++ vs->PreviousIsMatch = previousIsMatch;
++ vs->RemainLen = len;
++ #endif
++
++ *outSizeProcessed = nowPos;
++ return LZMA_RESULT_OK;
++}
+Index: linux-2.6.23-rc6/lib/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/lib/Makefile 2007-09-21 16:23:55.000000000 +0800
++++ linux-2.6.23-rc6/lib/Makefile 2007-09-21 16:23:55.000000000 +0800
+@@ -13,7 +13,7 @@
+ lib-y += kobject.o kref.o kobject_uevent.o klist.o
+
+ obj-y += div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
+- bust_spinlocks.o hexdump.o
++ bust_spinlocks.o hexdump.o LzmaDecode.o
+
+ ifeq ($(CONFIG_DEBUG_KOBJECT),y)
+ CFLAGS_kobject.o += -DDEBUG
+@@ -62,6 +62,7 @@
+ obj-$(CONFIG_AUDIT_GENERIC) += audit.o
+
+ obj-$(CONFIG_SWIOTLB) += swiotlb.o
++
+ obj-$(CONFIG_FAULT_INJECTION) += fault-inject.o
+
+ lib-$(CONFIG_GENERIC_BUG) += bug.o
--- /dev/null
+Index: linux-2.6.23-rc6/fs/squashfs/inode.c
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/squashfs/inode.c 2007-09-21 16:23:55.000000000 +0800
++++ linux-2.6.23-rc6/fs/squashfs/inode.c 2007-09-21 16:23:56.000000000 +0800
+@@ -4,6 +4,9 @@
+ * Copyright (c) 2002, 2003, 2004, 2005, 2006
+ * Phillip Lougher <phillip@lougher.org.uk>
+ *
++ * LZMA decompressor support added by Oleg I. Vdovikin
++ * Copyright (c) 2005 Oleg I.Vdovikin <oleg@cs.msu.su>
++ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2,
+@@ -21,6 +24,7 @@
+ * inode.c
+ */
+
++#define SQUASHFS_LZMA
+ #include <linux/types.h>
+ #include <linux/squashfs_fs.h>
+ #include <linux/module.h>
+@@ -44,6 +48,19 @@
+
+ #include "squashfs.h"
+
++#ifdef SQUASHFS_LZMA
++#include <linux/LzmaDecode.h>
++
++/* default LZMA settings, should be in sync with mksquashfs */
++#define LZMA_LC 3
++#define LZMA_LP 0
++#define LZMA_PB 2
++
++#define LZMA_WORKSPACE_SIZE ((LZMA_BASE_SIZE + \
++ (LZMA_LIT_SIZE << (LZMA_LC + LZMA_LP))) * sizeof(CProb))
++
++#endif
++
+ static void squashfs_put_super(struct super_block *);
+ static int squashfs_statfs(struct dentry *, struct kstatfs *);
+ static int squashfs_symlink_readpage(struct file *file, struct page *page);
+@@ -64,7 +81,11 @@
+ const char *, void *, struct vfsmount *);
+
+
++#ifdef SQUASHFS_LZMA
++static unsigned char lzma_workspace[LZMA_WORKSPACE_SIZE];
++#else
+ static z_stream stream;
++#endif
+
+ static struct file_system_type squashfs_fs_type = {
+ .owner = THIS_MODULE,
+@@ -249,6 +270,15 @@
+ if (compressed) {
+ int zlib_err;
+
++#ifdef SQUASHFS_LZMA
++ if ((zlib_err = LzmaDecode(lzma_workspace,
++ LZMA_WORKSPACE_SIZE, LZMA_LC, LZMA_LP, LZMA_PB,
++ c_buffer, c_byte, buffer, msblk->read_size, &bytes)) != LZMA_RESULT_OK)
++ {
++ ERROR("lzma returned unexpected result 0x%x\n", zlib_err);
++ bytes = 0;
++ }
++#else
+ stream.next_in = c_buffer;
+ stream.avail_in = c_byte;
+ stream.next_out = buffer;
+@@ -263,7 +293,7 @@
+ bytes = 0;
+ } else
+ bytes = stream.total_out;
+-
++#endif
+ up(&msblk->read_data_mutex);
+ }
+
+@@ -2045,15 +2075,19 @@
+ printk(KERN_INFO "squashfs: version 3.0 (2006/03/15) "
+ "Phillip Lougher\n");
+
++#ifndef SQUASHFS_LZMA
+ if (!(stream.workspace = vmalloc(zlib_inflate_workspacesize()))) {
+ ERROR("Failed to allocate zlib workspace\n");
+ destroy_inodecache();
+ err = -ENOMEM;
+ goto out;
+ }
++#endif
+
+ if ((err = register_filesystem(&squashfs_fs_type))) {
++#ifndef SQUASHFS_LZMA
+ vfree(stream.workspace);
++#endif
+ destroy_inodecache();
+ }
+
+@@ -2064,7 +2098,9 @@
+
+ static void __exit exit_squashfs_fs(void)
+ {
++#ifndef SQUASHFS_LZMA
+ vfree(stream.workspace);
++#endif
+ unregister_filesystem(&squashfs_fs_type);
+ destroy_inodecache();
+ }
--- /dev/null
+Index: linux-2.6.23-rc6/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/Makefile 2007-09-21 16:23:55.000000000 +0800
++++ linux-2.6.23-rc6/Makefile 2007-09-21 16:23:56.000000000 +0800
+@@ -508,6 +508,9 @@
+ NOSTDINC_FLAGS += -nostdinc -isystem $(shell $(CC) -print-file-name=include)
+ CHECKFLAGS += $(NOSTDINC_FLAGS)
+
++# improve gcc optimization
++CFLAGS += $(call cc-option,-funit-at-a-time,)
++
+ # warn about C99 declaration after statement
+ CFLAGS += $(call cc-option,-Wdeclaration-after-statement,)
+
--- /dev/null
+Index: linux-2.6.23-rc6/include/asm-mips/system.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/asm-mips/system.h 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/include/asm-mips/system.h 2007-09-21 16:23:57.000000000 +0800
+@@ -180,7 +180,7 @@
+ if something tries to do an invalid xchg(). */
+ extern void __xchg_called_with_bad_pointer(void);
+
+-static inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
++static __always_inline unsigned long __xchg(unsigned long x, volatile void * ptr, int size)
+ {
+ switch (size) {
+ case 4:
--- /dev/null
+Index: linux-2.6.23-rc6/drivers/mtd/chips/cfi_cmdset_0002.c
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/mtd/chips/cfi_cmdset_0002.c 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/drivers/mtd/chips/cfi_cmdset_0002.c 2007-09-21 16:23:57.000000000 +0800
+@@ -51,6 +51,7 @@
+ #define SST49LF040B 0x0050
+ #define SST49LF008A 0x005a
+ #define AT49BV6416 0x00d6
++#define MANUFACTURER_SAMSUNG 0x00ec
+
+ static int cfi_amdstd_read (struct mtd_info *, loff_t, size_t, size_t *, u_char *);
+ static int cfi_amdstd_write_words(struct mtd_info *, loff_t, size_t, size_t *, const u_char *);
+@@ -294,12 +295,19 @@
+
+ if (extp->MajorVersion != '1' ||
+ (extp->MinorVersion < '0' || extp->MinorVersion > '4')) {
+- printk(KERN_ERR " Unknown Amd/Fujitsu Extended Query "
+- "version %c.%c.\n", extp->MajorVersion,
+- extp->MinorVersion);
+- kfree(extp);
+- kfree(mtd);
+- return NULL;
++ if (cfi->mfr == MANUFACTURER_SAMSUNG &&
++ (extp->MajorVersion == '3' && extp->MinorVersion == '3')) {
++ printk(KERN_NOTICE " Newer Samsung flash detected, "
++ "should be compatibile with Amd/Fujitsu.\n");
++ }
++ else {
++ printk(KERN_ERR " Unknown Amd/Fujitsu Extended Query "
++ "version %c.%c.\n", extp->MajorVersion,
++ extp->MinorVersion);
++ kfree(extp);
++ kfree(mtd);
++ return NULL;
++ }
+ }
+
+ /* Install our own private info structure */
--- /dev/null
+Index: linux-2.6.23-rc6/drivers/mtd/chips/cfi_cmdset_0001.c
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/mtd/chips/cfi_cmdset_0001.c 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/drivers/mtd/chips/cfi_cmdset_0001.c 2007-09-21 16:23:57.000000000 +0800
+@@ -933,7 +933,7 @@
+
+ static int __xipram xip_wait_for_operation(
+ struct map_info *map, struct flchip *chip,
+- unsigned long adr, unsigned int chip_op_time )
++ unsigned long adr, int *chip_op_time )
+ {
+ struct cfi_private *cfi = map->fldrv_priv;
+ struct cfi_pri_intelext *cfip = cfi->cmdset_priv;
+@@ -942,7 +942,7 @@
+ flstate_t oldstate, newstate;
+
+ start = xip_currtime();
+- usec = chip_op_time * 8;
++ usec = *chip_op_time * 8;
+ if (usec == 0)
+ usec = 500000;
+ done = 0;
+@@ -1052,8 +1052,8 @@
+ #define XIP_INVAL_CACHED_RANGE(map, from, size) \
+ INVALIDATE_CACHED_RANGE(map, from, size)
+
+-#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, usec) \
+- xip_wait_for_operation(map, chip, cmd_adr, usec)
++#define INVAL_CACHE_AND_WAIT(map, chip, cmd_adr, inval_adr, inval_len, p_usec) \
++ xip_wait_for_operation(map, chip, cmd_adr, p_usec)
+
+ #else
+
+@@ -1065,65 +1065,65 @@
+ static int inval_cache_and_wait_for_operation(
+ struct map_info *map, struct flchip *chip,
+ unsigned long cmd_adr, unsigned long inval_adr, int inval_len,
+- unsigned int chip_op_time)
++ int *chip_op_time )
+ {
+ struct cfi_private *cfi = map->fldrv_priv;
+ map_word status, status_OK = CMD(0x80);
+- int chip_state = chip->state;
+- unsigned int timeo, sleep_time;
++ int z, chip_state = chip->state;
++ unsigned long timeo;
+
+ spin_unlock(chip->mutex);
+ if (inval_len)
+ INVALIDATE_CACHED_RANGE(map, inval_adr, inval_len);
++ if (*chip_op_time)
++ cfi_udelay(*chip_op_time);
+ spin_lock(chip->mutex);
+
+- /* set our timeout to 8 times the expected delay */
+- timeo = chip_op_time * 8;
+- if (!timeo)
+- timeo = 500000;
+- sleep_time = chip_op_time / 2;
++ timeo = *chip_op_time * 8 * HZ / 1000000;
++ if (timeo < HZ/2)
++ timeo = HZ/2;
++ timeo += jiffies;
+
++ z = 0;
+ for (;;) {
++ if (chip->state != chip_state) {
++ /* Someone's suspended the operation: sleep */
++ DECLARE_WAITQUEUE(wait, current);
++
++ set_current_state(TASK_UNINTERRUPTIBLE);
++ add_wait_queue(&chip->wq, &wait);
++ spin_unlock(chip->mutex);
++ schedule();
++ remove_wait_queue(&chip->wq, &wait);
++ timeo = jiffies + (HZ / 2); /* FIXME */
++ spin_lock(chip->mutex);
++ continue;
++ }
++
+ status = map_read(map, cmd_adr);
+ if (map_word_andequal(map, status, status_OK, status_OK))
+ break;
+
+- if (!timeo) {
++ /* OK Still waiting */
++ if (time_after(jiffies, timeo)) {
+ map_write(map, CMD(0x70), cmd_adr);
+ chip->state = FL_STATUS;
+ return -ETIME;
+ }
+
+- /* OK Still waiting. Drop the lock, wait a while and retry. */
++ /* Latency issues. Drop the lock, wait a while and retry */
++ z++;
+ spin_unlock(chip->mutex);
+- if (sleep_time >= 1000000/HZ) {
+- /*
+- * Half of the normal delay still remaining
+- * can be performed with a sleeping delay instead
+- * of busy waiting.
+- */
+- msleep(sleep_time/1000);
+- timeo -= sleep_time;
+- sleep_time = 1000000/HZ;
+- } else {
+- udelay(1);
+- cond_resched();
+- timeo--;
+- }
++ cfi_udelay(1);
+ spin_lock(chip->mutex);
+-
+- while (chip->state != chip_state) {
+- /* Someone's suspended the operation: sleep */
+- DECLARE_WAITQUEUE(wait, current);
+- set_current_state(TASK_UNINTERRUPTIBLE);
+- add_wait_queue(&chip->wq, &wait);
+- spin_unlock(chip->mutex);
+- schedule();
+- remove_wait_queue(&chip->wq, &wait);
+- spin_lock(chip->mutex);
+- }
+ }
+
++ if (!z) {
++ if (!--(*chip_op_time))
++ *chip_op_time = 1;
++ } else if (z > 1)
++ ++(*chip_op_time);
++
+ /* Done and happy. */
+ chip->state = FL_STATUS;
+ return 0;
+@@ -1132,7 +1132,8 @@
+ #endif
+
+ #define WAIT_TIMEOUT(map, chip, adr, udelay) \
+- INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, udelay);
++ ({ int __udelay = (udelay); \
++ INVAL_CACHE_AND_WAIT(map, chip, adr, 0, 0, &__udelay); })
+
+
+ static int do_point_onechip (struct map_info *map, struct flchip *chip, loff_t adr, size_t len)
+@@ -1356,7 +1357,7 @@
+
+ ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
+ adr, map_bankwidth(map),
+- chip->word_write_time);
++ &chip->word_write_time);
+ if (ret) {
+ xip_enable(map, chip, adr);
+ printk(KERN_ERR "%s: word write error (status timeout)\n", map->name);
+@@ -1593,7 +1594,7 @@
+
+ ret = INVAL_CACHE_AND_WAIT(map, chip, cmd_adr,
+ adr, len,
+- chip->buffer_write_time);
++ &chip->buffer_write_time);
+ if (ret) {
+ map_write(map, CMD(0x70), cmd_adr);
+ chip->state = FL_STATUS;
+@@ -1728,7 +1729,7 @@
+
+ ret = INVAL_CACHE_AND_WAIT(map, chip, adr,
+ adr, len,
+- chip->erase_time);
++ &chip->erase_time);
+ if (ret) {
+ map_write(map, CMD(0x70), adr);
+ chip->state = FL_STATUS;
--- /dev/null
+Index: linux-2.6.23-rc6/fs/squashfs/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/squashfs/Makefile 2007-09-21 16:23:55.000000000 +0800
++++ linux-2.6.23-rc6/fs/squashfs/Makefile 2007-09-21 16:23:58.000000000 +0800
+@@ -4,4 +4,3 @@
+
+ obj-$(CONFIG_SQUASHFS) += squashfs.o
+ squashfs-y += inode.o
+-squashfs-y += squashfs2_0.o
+Index: linux-2.6.23-rc6/fs/squashfs/squashfs.h
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/squashfs/squashfs.h 2007-09-21 16:23:55.000000000 +0800
++++ linux-2.6.23-rc6/fs/squashfs/squashfs.h 2007-09-21 16:23:58.000000000 +0800
+@@ -24,6 +24,9 @@
+ #ifdef CONFIG_SQUASHFS_1_0_COMPATIBILITY
+ #undef CONFIG_SQUASHFS_1_0_COMPATIBILITY
+ #endif
++#ifdef CONFIG_SQUASHFS_2_0_COMPATIBILITY
++#undef CONFIG_SQUASHFS_2_0_COMPATIBILITY
++#endif
+
+ #ifdef SQUASHFS_TRACE
+ #define TRACE(s, args...) printk(KERN_NOTICE "SQUASHFS: "s, ## args)
--- /dev/null
+Index: linux-2.6.23-rc6/arch/mips/kernel/head.S
+===================================================================
+--- linux-2.6.23-rc6.orig/arch/mips/kernel/head.S 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/arch/mips/kernel/head.S 2007-09-21 16:23:58.000000000 +0800
+@@ -130,6 +130,8 @@
+ #endif
+ .endm
+
++ j kernel_entry
++ nop
+ #ifndef CONFIG_NO_EXCEPT_FILL
+ /*
+ * Reserved space for exception handlers.
--- /dev/null
+Index: linux-2.6.23-rc6/arch/mips/mm/tlbex.c
+===================================================================
+--- linux-2.6.23-rc6.orig/arch/mips/mm/tlbex.c 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/arch/mips/mm/tlbex.c 2007-09-21 16:23:58.000000000 +0800
+@@ -887,7 +887,6 @@
+ case CPU_R10000:
+ case CPU_R12000:
+ case CPU_R14000:
+- case CPU_4KC:
+ case CPU_SB1:
+ case CPU_SB1A:
+ case CPU_4KSC:
+@@ -916,6 +915,7 @@
+ tlbw(p);
+ break;
+
++ case CPU_4KC:
+ case CPU_4KEC:
+ case CPU_24K:
+ case CPU_34K:
--- /dev/null
+Index: linux-2.6.23-rc6/drivers/mtd/devices/block2mtd.c
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/mtd/devices/block2mtd.c 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/drivers/mtd/devices/block2mtd.c 2007-09-21 16:23:59.000000000 +0800
+@@ -16,6 +16,7 @@
+ #include <linux/list.h>
+ #include <linux/init.h>
+ #include <linux/mtd/mtd.h>
++#include <linux/mtd/partitions.h>
+ #include <linux/buffer_head.h>
+ #include <linux/mutex.h>
+ #include <linux/mount.h>
+@@ -237,10 +238,11 @@
+
+
+ /* FIXME: ensure that mtd->size % erase_size == 0 */
+-static struct block2mtd_dev *add_device(char *devname, int erase_size)
++static struct block2mtd_dev *add_device(char *devname, int erase_size, char *mtdname)
+ {
+ struct block_device *bdev;
+ struct block2mtd_dev *dev;
++ struct mtd_partition *part;
+
+ if (!devname)
+ return NULL;
+@@ -279,14 +281,18 @@
+
+ /* Setup the MTD structure */
+ /* make the name contain the block device in */
+- dev->mtd.name = kmalloc(sizeof("block2mtd: ") + strlen(devname),
+- GFP_KERNEL);
++
++ if (!mtdname)
++ mtdname = devname;
++
++ dev->mtd.name = kmalloc(strlen(mtdname) + 1, GFP_KERNEL);
++
+ if (!dev->mtd.name)
+ goto devinit_err;
++
++ strcpy(dev->mtd.name, mtdname);
+
+- sprintf(dev->mtd.name, "block2mtd: %s", devname);
+-
+- dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK;
++ dev->mtd.size = dev->blkdev->bd_inode->i_size & PAGE_MASK & ~(erase_size - 1);
+ dev->mtd.erasesize = erase_size;
+ dev->mtd.writesize = 1;
+ dev->mtd.type = MTD_RAM;
+@@ -298,15 +304,18 @@
+ dev->mtd.read = block2mtd_read;
+ dev->mtd.priv = dev;
+ dev->mtd.owner = THIS_MODULE;
+-
+- if (add_mtd_device(&dev->mtd)) {
++
++ part = kzalloc(sizeof(struct mtd_partition), GFP_KERNEL);
++ part->name = dev->mtd.name;
++ part->offset = 0;
++ part->size = dev->mtd.size;
++ if (add_mtd_partitions(&dev->mtd, part, 1)) {
+ /* Device didnt get added, so free the entry */
+ goto devinit_err;
+ }
+ list_add(&dev->list, &blkmtd_device_list);
+ INFO("mtd%d: [%s] erase_size = %dKiB [%d]", dev->mtd.index,
+- dev->mtd.name + strlen("blkmtd: "),
+- dev->mtd.erasesize >> 10, dev->mtd.erasesize);
++ mtdname, dev->mtd.erasesize >> 10, dev->mtd.erasesize);
+ return dev;
+
+ devinit_err:
+@@ -379,9 +388,9 @@
+
+ static int block2mtd_setup2(const char *val)
+ {
+- char buf[80 + 12]; /* 80 for device, 12 for erase size */
++ char buf[80 + 12 + 80]; /* 80 for device, 12 for erase size, 80 for name */
+ char *str = buf;
+- char *token[2];
++ char *token[3];
+ char *name;
+ size_t erase_size = PAGE_SIZE;
+ int i, ret;
+@@ -392,7 +401,7 @@
+ strcpy(str, val);
+ kill_final_newline(str);
+
+- for (i = 0; i < 2; i++)
++ for (i = 0; i < 3; i++)
+ token[i] = strsep(&str, ",");
+
+ if (str)
+@@ -412,8 +421,10 @@
+ parse_err("illegal erase size");
+ }
+ }
++ if (token[2] && (strlen(token[2]) + 1 > 80))
++ parse_err("mtd device name too long");
+
+- add_device(name, erase_size);
++ add_device(name, erase_size, token[2]);
+
+ return 0;
+ }
+@@ -447,7 +458,7 @@
+
+
+ module_param_call(block2mtd, block2mtd_setup, NULL, NULL, 0200);
+-MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>]\"");
++MODULE_PARM_DESC(block2mtd, "Device to use. \"block2mtd=<dev>[,<erasesize>[,<name>]]\"");
+
+ static int __init block2mtd_init(void)
+ {
--- /dev/null
+Index: linux-2.6.23-rc6/drivers/mtd/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/mtd/Kconfig 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/drivers/mtd/Kconfig 2007-09-21 16:23:59.000000000 +0800
+@@ -47,6 +47,16 @@
+ devices. Partitioning on NFTL 'devices' is a different - that's the
+ 'normal' form of partitioning used on a block device.
+
++config MTD_ROOTFS_ROOT_DEV
++ bool "Automatically set 'rootfs' partition to be root filesystem"
++ depends on MTD_PARTITIONS
++ default y
++
++config MTD_ROOTFS_SPLIT
++ bool "Automatically split 'rootfs' partition for squashfs"
++ depends on MTD_PARTITIONS
++ default y
++
+ config MTD_REDBOOT_PARTS
+ tristate "RedBoot partition table parsing"
+ depends on MTD_PARTITIONS
+Index: linux-2.6.23-rc6/drivers/mtd/mtdpart.c
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/mtd/mtdpart.c 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/drivers/mtd/mtdpart.c 2007-09-21 16:23:59.000000000 +0800
+@@ -20,6 +20,8 @@
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+ #include <linux/mtd/compatmac.h>
++#include <linux/squashfs_fs.h>
++#include <linux/root_dev.h>
+
+ /* Our partition linked list */
+ static LIST_HEAD(mtd_partitions);
+@@ -39,7 +41,7 @@
+ * the pointer to that structure with this macro.
+ */
+ #define PART(x) ((struct mtd_part *)(x))
+-
++#define IS_PART(mtd) (mtd->read == part_read)
+
+ /*
+ * MTD methods which simply translate the effective address and pass through
+@@ -308,6 +310,312 @@
+ return 0;
+ }
+
++static u_int32_t cur_offset = 0;
++static int add_one_partition(struct mtd_info *master, const struct mtd_partition *part,
++ int i, struct mtd_part **slp)
++{
++ struct mtd_part *slave;
++
++ /* allocate the partition structure */
++ slave = kzalloc (sizeof(*slave), GFP_KERNEL);
++ if (!slave) {
++ printk ("memory allocation error while creating partitions for \"%s\"\n",
++ master->name);
++ del_mtd_partitions(master);
++ return -ENOMEM;
++ }
++ list_add(&slave->list, &mtd_partitions);
++
++ /* set up the MTD object for this partition */
++ slave->mtd.type = master->type;
++ slave->mtd.flags = master->flags & ~part->mask_flags;
++ slave->mtd.size = part->size;
++ slave->mtd.writesize = master->writesize;
++ slave->mtd.oobsize = master->oobsize;
++ slave->mtd.oobavail = master->oobavail;
++ slave->mtd.subpage_sft = master->subpage_sft;
++
++ slave->mtd.name = part->name;
++ slave->mtd.owner = master->owner;
++
++ slave->mtd.read = part_read;
++ slave->mtd.write = part_write;
++ slave->mtd.refresh_device = part->refresh_partition;
++
++ if(master->point && master->unpoint){
++ slave->mtd.point = part_point;
++ slave->mtd.unpoint = part_unpoint;
++ }
++
++ if (master->read_oob)
++ slave->mtd.read_oob = part_read_oob;
++ if (master->write_oob)
++ slave->mtd.write_oob = part_write_oob;
++ if(master->read_user_prot_reg)
++ slave->mtd.read_user_prot_reg = part_read_user_prot_reg;
++ if(master->read_fact_prot_reg)
++ slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg;
++ if(master->write_user_prot_reg)
++ slave->mtd.write_user_prot_reg = part_write_user_prot_reg;
++ if(master->lock_user_prot_reg)
++ slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg;
++ if(master->get_user_prot_info)
++ slave->mtd.get_user_prot_info = part_get_user_prot_info;
++ if(master->get_fact_prot_info)
++ slave->mtd.get_fact_prot_info = part_get_fact_prot_info;
++ if (master->sync)
++ slave->mtd.sync = part_sync;
++ if (!i && master->suspend && master->resume) {
++ slave->mtd.suspend = part_suspend;
++ slave->mtd.resume = part_resume;
++ }
++ if (master->writev)
++ slave->mtd.writev = part_writev;
++ if (master->lock)
++ slave->mtd.lock = part_lock;
++ if (master->unlock)
++ slave->mtd.unlock = part_unlock;
++ if (master->block_isbad)
++ slave->mtd.block_isbad = part_block_isbad;
++ if (master->block_markbad)
++ slave->mtd.block_markbad = part_block_markbad;
++ slave->mtd.erase = part_erase;
++ slave->master = master;
++ slave->offset = part->offset;
++ slave->index = i;
++
++ if (slave->offset == MTDPART_OFS_APPEND)
++ slave->offset = cur_offset;
++ if (slave->offset == MTDPART_OFS_NXTBLK) {
++ slave->offset = cur_offset;
++ if ((cur_offset % master->erasesize) != 0) {
++ /* Round up to next erasesize */
++ slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize;
++ printk(KERN_NOTICE "Moving partition %d: "
++ "0x%08x -> 0x%08x\n", i,
++ cur_offset, slave->offset);
++ }
++ }
++ if (slave->mtd.size == MTDPART_SIZ_FULL)
++ slave->mtd.size = master->size - slave->offset;
++ cur_offset = slave->offset + slave->mtd.size;
++
++ printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset,
++ slave->offset + slave->mtd.size, slave->mtd.name);
++
++ /* let's do some sanity checks */
++ if (slave->offset >= master->size) {
++ /* let's register it anyway to preserve ordering */
++ slave->offset = 0;
++ slave->mtd.size = 0;
++ printk ("mtd: partition \"%s\" is out of reach -- disabled\n",
++ part->name);
++ }
++ if (slave->offset + slave->mtd.size > master->size) {
++ slave->mtd.size = master->size - slave->offset;
++ printk ("mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n",
++ part->name, master->name, slave->mtd.size);
++ }
++ if (master->numeraseregions>1) {
++ /* Deal with variable erase size stuff */
++ int i;
++ struct mtd_erase_region_info *regions = master->eraseregions;
++
++ /* Find the first erase regions which is part of this partition. */
++ for (i=0; i < master->numeraseregions && slave->offset >= regions[i].offset; i++)
++ ;
++
++ for (i--; i < master->numeraseregions && slave->offset + slave->mtd.size > regions[i].offset; i++) {
++ if (slave->mtd.erasesize < regions[i].erasesize) {
++ slave->mtd.erasesize = regions[i].erasesize;
++ }
++ }
++ } else {
++ /* Single erase size */
++ slave->mtd.erasesize = master->erasesize;
++ }
++
++ if ((slave->mtd.flags & MTD_WRITEABLE) &&
++ (slave->offset % slave->mtd.erasesize)) {
++ /* Doesn't start on a boundary of major erase size */
++ /* FIXME: Let it be writable if it is on a boundary of _minor_ erase size though */
++ slave->mtd.flags &= ~MTD_WRITEABLE;
++ printk ("mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n",
++ part->name);
++ }
++ if ((slave->mtd.flags & MTD_WRITEABLE) &&
++ (slave->mtd.size % slave->mtd.erasesize)) {
++ slave->mtd.flags &= ~MTD_WRITEABLE;
++ printk ("mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
++ part->name);
++ }
++
++ slave->mtd.ecclayout = master->ecclayout;
++ if (master->block_isbad) {
++ uint32_t offs = 0;
++
++ while(offs < slave->mtd.size) {
++ if (master->block_isbad(master,
++ offs + slave->offset))
++ slave->mtd.ecc_stats.badblocks++;
++ offs += slave->mtd.erasesize;
++ }
++ }
++
++ if(part->mtdp)
++ { /* store the object pointer (caller may or may not register it */
++ *part->mtdp = &slave->mtd;
++ slave->registered = 0;
++ }
++ else
++ {
++ /* register our partition */
++ add_mtd_device(&slave->mtd);
++ slave->registered = 1;
++ }
++
++ if (slp)
++ *slp = slave;
++
++ return 0;
++}
++
++#ifdef CONFIG_MTD_ROOTFS_SPLIT
++#define ROOTFS_SPLIT_NAME "rootfs_data"
++#define ROOTFS_REMOVED_NAME "<removed>"
++static int split_squashfs(struct mtd_info *master, int offset, int *split_offset)
++{
++ char buf[512];
++ struct squashfs_super_block *sb = (struct squashfs_super_block *) buf;
++ int len, ret;
++
++ ret = master->read(master, offset, sizeof(*sb), &len, buf);
++ if (ret || (len != sizeof(*sb))) {
++ printk(KERN_ALERT "split_squashfs: error occured while reading "
++ "from \"%s\"\n", master->name);
++ return -EINVAL;
++ }
++
++ if (*((u32 *) buf) != SQUASHFS_MAGIC) {
++ printk(KERN_ALERT "split_squasfs: no squashfs found in \"%s\"\n",
++ master->name);
++ *split_offset = 0;
++ return 0;
++ }
++
++ if (sb->bytes_used <= 0) {
++ printk(KERN_ALERT "split_squashfs: squashfs is empty in \"%s\"\n",
++ master->name);
++ *split_offset = 0;
++ return 0;
++ }
++
++ len = (u32) sb->bytes_used;
++ len += (offset & 0x000fffff);
++ len += (master->erasesize - 1);
++ len &= ~(master->erasesize - 1);
++ len -= (offset & 0x000fffff);
++ *split_offset = offset + len;
++
++ return 0;
++}
++
++static int split_rootfs_data(struct mtd_info *master, struct mtd_info *rpart, struct mtd_partition *part,
++ int index)
++{
++ struct mtd_partition *dpart;
++ struct mtd_part *slave = NULL;
++ int split_offset = 0;
++ int ret;
++
++ ret = split_squashfs(master, part->offset, &split_offset);
++ if (ret)
++ return ret;
++
++ if (split_offset <= 0)
++ return 0;
++
++ dpart = kmalloc(sizeof(*part)+sizeof(ROOTFS_SPLIT_NAME)+1, GFP_KERNEL);
++ if (dpart == NULL) {
++ printk(KERN_INFO "split_squashfs: no memory for partition \"%s\"\n",
++ ROOTFS_SPLIT_NAME);
++ return -ENOMEM;
++ }
++
++ memcpy(dpart, part, sizeof(*part));
++ dpart->name = (unsigned char *)&dpart[1];
++ strcpy(dpart->name, ROOTFS_SPLIT_NAME);
++
++ dpart->size -= split_offset - dpart->offset;
++ dpart->offset = split_offset;
++
++ if (dpart == NULL)
++ return 1;
++
++ printk(KERN_INFO "mtd: partition \"%s\" created automatically, ofs=%X, len=%X \n",
++ ROOTFS_SPLIT_NAME, dpart->offset, dpart->size);
++
++ ret = add_one_partition(master, dpart, index, &slave);
++ if (ret)
++ kfree(dpart);
++ else if (slave)
++ rpart->split = &slave->mtd;
++
++ return ret;
++}
++
++static int refresh_rootfs_split(struct mtd_info *mtd)
++{
++ struct mtd_partition tpart;
++ struct mtd_part *part;
++ int index = 0;
++ int offset, size;
++ int ret;
++
++ part = PART(mtd);
++
++ /* check for the new squashfs offset first */
++ ret = split_squashfs(part->master, part->offset, &offset);
++ if (ret)
++ return ret;
++
++ if ((offset > 0) && !mtd->split) {
++ printk(KERN_INFO "%s: creating new split partition for \"%s\"\n", __func__, mtd->name);
++ /* if we don't have a rootfs split partition, create a new one */
++ tpart.name = mtd->name;
++ tpart.size = mtd->size;
++ tpart.offset = part->offset;
++
++ /* find the index of the last partition */
++ if (!list_empty(&mtd_partitions))
++ index = list_first_entry(&mtd_partitions, struct mtd_part, list)->index + 1;
++
++ return split_rootfs_data(part->master, &part->mtd, &tpart, index);
++ } else if ((offset > 0) && mtd->split) {
++ /* update the offsets of the existing partition */
++ size = mtd->size + part->offset - offset;
++
++ part = PART(mtd->split);
++ part->offset = offset;
++ part->mtd.size = size;
++ printk(KERN_INFO "%s: %s partition \"" ROOTFS_SPLIT_NAME "\", offset: 0x%06x (0x%06x)\n",
++ __func__, (!strcmp(part->mtd.name, ROOTFS_SPLIT_NAME) ? "updating" : "creating"),
++ part->offset, part->mtd.size);
++ strcpy(part->mtd.name, ROOTFS_SPLIT_NAME);
++ } else if ((offset <= 0) && mtd->split) {
++ printk(KERN_INFO "%s: removing partition \"%s\"\n", __func__, mtd->split->name);
++
++ /* mark existing partition as removed */
++ part = PART(mtd->split);
++ strcpy(part->mtd.name, ROOTFS_REMOVED_NAME);
++ part->offset = 0;
++ part->mtd.size = 0;
++ }
++
++ return 0;
++}
++#endif /* CONFIG_MTD_ROOTFS_SPLIT */
++
+ /*
+ * This function, given a master MTD object and a partition table, creates
+ * and registers slave MTD objects which are bound to the master according to
+@@ -320,168 +628,31 @@
+ int nbparts)
+ {
+ struct mtd_part *slave;
+- u_int32_t cur_offset = 0;
+- int i;
++ struct mtd_partition *part;
++ int i, j, ret = 0;
+
+ printk (KERN_NOTICE "Creating %d MTD partitions on \"%s\":\n", nbparts, master->name);
+
+- for (i = 0; i < nbparts; i++) {
+-
+- /* allocate the partition structure */
+- slave = kzalloc (sizeof(*slave), GFP_KERNEL);
+- if (!slave) {
+- printk ("memory allocation error while creating partitions for \"%s\"\n",
+- master->name);
+- del_mtd_partitions(master);
+- return -ENOMEM;
+- }
+- list_add(&slave->list, &mtd_partitions);
+-
+- /* set up the MTD object for this partition */
+- slave->mtd.type = master->type;
+- slave->mtd.flags = master->flags & ~parts[i].mask_flags;
+- slave->mtd.size = parts[i].size;
+- slave->mtd.writesize = master->writesize;
+- slave->mtd.oobsize = master->oobsize;
+- slave->mtd.oobavail = master->oobavail;
+- slave->mtd.subpage_sft = master->subpage_sft;
+-
+- slave->mtd.name = parts[i].name;
+- slave->mtd.owner = master->owner;
+-
+- slave->mtd.read = part_read;
+- slave->mtd.write = part_write;
+-
+- if(master->point && master->unpoint){
+- slave->mtd.point = part_point;
+- slave->mtd.unpoint = part_unpoint;
+- }
+-
+- if (master->read_oob)
+- slave->mtd.read_oob = part_read_oob;
+- if (master->write_oob)
+- slave->mtd.write_oob = part_write_oob;
+- if(master->read_user_prot_reg)
+- slave->mtd.read_user_prot_reg = part_read_user_prot_reg;
+- if(master->read_fact_prot_reg)
+- slave->mtd.read_fact_prot_reg = part_read_fact_prot_reg;
+- if(master->write_user_prot_reg)
+- slave->mtd.write_user_prot_reg = part_write_user_prot_reg;
+- if(master->lock_user_prot_reg)
+- slave->mtd.lock_user_prot_reg = part_lock_user_prot_reg;
+- if(master->get_user_prot_info)
+- slave->mtd.get_user_prot_info = part_get_user_prot_info;
+- if(master->get_fact_prot_info)
+- slave->mtd.get_fact_prot_info = part_get_fact_prot_info;
+- if (master->sync)
+- slave->mtd.sync = part_sync;
+- if (!i && master->suspend && master->resume) {
+- slave->mtd.suspend = part_suspend;
+- slave->mtd.resume = part_resume;
+- }
+- if (master->writev)
+- slave->mtd.writev = part_writev;
+- if (master->lock)
+- slave->mtd.lock = part_lock;
+- if (master->unlock)
+- slave->mtd.unlock = part_unlock;
+- if (master->block_isbad)
+- slave->mtd.block_isbad = part_block_isbad;
+- if (master->block_markbad)
+- slave->mtd.block_markbad = part_block_markbad;
+- slave->mtd.erase = part_erase;
+- slave->master = master;
+- slave->offset = parts[i].offset;
+- slave->index = i;
+-
+- if (slave->offset == MTDPART_OFS_APPEND)
+- slave->offset = cur_offset;
+- if (slave->offset == MTDPART_OFS_NXTBLK) {
+- slave->offset = cur_offset;
+- if ((cur_offset % master->erasesize) != 0) {
+- /* Round up to next erasesize */
+- slave->offset = ((cur_offset / master->erasesize) + 1) * master->erasesize;
+- printk(KERN_NOTICE "Moving partition %d: "
+- "0x%08x -> 0x%08x\n", i,
+- cur_offset, slave->offset);
+- }
+- }
+- if (slave->mtd.size == MTDPART_SIZ_FULL)
+- slave->mtd.size = master->size - slave->offset;
+- cur_offset = slave->offset + slave->mtd.size;
+-
+- printk (KERN_NOTICE "0x%08x-0x%08x : \"%s\"\n", slave->offset,
+- slave->offset + slave->mtd.size, slave->mtd.name);
+-
+- /* let's do some sanity checks */
+- if (slave->offset >= master->size) {
+- /* let's register it anyway to preserve ordering */
+- slave->offset = 0;
+- slave->mtd.size = 0;
+- printk ("mtd: partition \"%s\" is out of reach -- disabled\n",
+- parts[i].name);
+- }
+- if (slave->offset + slave->mtd.size > master->size) {
+- slave->mtd.size = master->size - slave->offset;
+- printk ("mtd: partition \"%s\" extends beyond the end of device \"%s\" -- size truncated to %#x\n",
+- parts[i].name, master->name, slave->mtd.size);
+- }
+- if (master->numeraseregions>1) {
+- /* Deal with variable erase size stuff */
+- int i;
+- struct mtd_erase_region_info *regions = master->eraseregions;
+-
+- /* Find the first erase regions which is part of this partition. */
+- for (i=0; i < master->numeraseregions && slave->offset >= regions[i].offset; i++)
+- ;
+-
+- for (i--; i < master->numeraseregions && slave->offset + slave->mtd.size > regions[i].offset; i++) {
+- if (slave->mtd.erasesize < regions[i].erasesize) {
+- slave->mtd.erasesize = regions[i].erasesize;
+- }
++ for (i = 0, j = 0; i < nbparts; i++) {
++ part = (struct mtd_partition *) &parts[i];
++ ret = add_one_partition(master, part, j, &slave);
++ if (ret)
++ return ret;
++ j++;
++
++ if (strcmp(part->name, "rootfs") == 0 && slave->registered) {
++#ifdef CONFIG_MTD_ROOTFS_ROOT_DEV
++ if (ROOT_DEV == 0) {
++ printk(KERN_NOTICE "mtd: partition \"rootfs\" "
++ "set to be root filesystem\n");
++ ROOT_DEV = MKDEV(MTD_BLOCK_MAJOR, slave->mtd.index);
+ }
+- } else {
+- /* Single erase size */
+- slave->mtd.erasesize = master->erasesize;
+- }
+-
+- if ((slave->mtd.flags & MTD_WRITEABLE) &&
+- (slave->offset % slave->mtd.erasesize)) {
+- /* Doesn't start on a boundary of major erase size */
+- /* FIXME: Let it be writable if it is on a boundary of _minor_ erase size though */
+- slave->mtd.flags &= ~MTD_WRITEABLE;
+- printk ("mtd: partition \"%s\" doesn't start on an erase block boundary -- force read-only\n",
+- parts[i].name);
+- }
+- if ((slave->mtd.flags & MTD_WRITEABLE) &&
+- (slave->mtd.size % slave->mtd.erasesize)) {
+- slave->mtd.flags &= ~MTD_WRITEABLE;
+- printk ("mtd: partition \"%s\" doesn't end on an erase block -- force read-only\n",
+- parts[i].name);
+- }
+-
+- slave->mtd.ecclayout = master->ecclayout;
+- if (master->block_isbad) {
+- uint32_t offs = 0;
+-
+- while(offs < slave->mtd.size) {
+- if (master->block_isbad(master,
+- offs + slave->offset))
+- slave->mtd.ecc_stats.badblocks++;
+- offs += slave->mtd.erasesize;
+- }
+- }
+-
+- if(parts[i].mtdp)
+- { /* store the object pointer (caller may or may not register it */
+- *parts[i].mtdp = &slave->mtd;
+- slave->registered = 0;
+- }
+- else
+- {
+- /* register our partition */
+- add_mtd_device(&slave->mtd);
+- slave->registered = 1;
++#endif
++#ifdef CONFIG_MTD_ROOTFS_SPLIT
++ ret = split_rootfs_data(master, &slave->mtd, part, j);
++ if (ret == 0)
++ j++;
++#endif
+ }
+ }
+
+@@ -557,6 +728,32 @@
+ return ret;
+ }
+
++int refresh_mtd_partitions(struct mtd_info *mtd)
++{
++ int ret = 0;
++
++ if (IS_PART(mtd)) {
++ struct mtd_part *part;
++ struct mtd_info *master;
++
++ part = PART(mtd);
++ master = part->master;
++ if (master->refresh_device)
++ ret = master->refresh_device(master);
++ }
++
++ if (!ret && mtd->refresh_device)
++ ret = mtd->refresh_device(mtd);
++
++#ifdef CONFIG_MTD_ROOTFS_SPLIT
++ if (!ret && IS_PART(mtd) && !strcmp(mtd->name, "rootfs"))
++ refresh_rootfs_split(mtd);
++#endif
++
++ return 0;
++}
++
+ EXPORT_SYMBOL_GPL(parse_mtd_partitions);
++EXPORT_SYMBOL_GPL(refresh_mtd_partitions);
+ EXPORT_SYMBOL_GPL(register_mtd_parser);
+ EXPORT_SYMBOL_GPL(deregister_mtd_parser);
+Index: linux-2.6.23-rc6/drivers/mtd/devices/block2mtd.c
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/mtd/devices/block2mtd.c 2007-09-21 16:23:59.000000000 +0800
++++ linux-2.6.23-rc6/drivers/mtd/devices/block2mtd.c 2007-09-21 16:23:59.000000000 +0800
+@@ -34,6 +34,8 @@
+ struct block_device *blkdev;
+ struct mtd_info mtd;
+ struct mutex write_mutex;
++ rwlock_t bdev_mutex;
++ char devname[0];
+ };
+
+
+@@ -86,6 +88,12 @@
+ size_t len = instr->len;
+ int err;
+
++ read_lock(&dev->bdev_mutex);
++ if (!dev->blkdev) {
++ err = -EINVAL;
++ goto done;
++ }
++
+ instr->state = MTD_ERASING;
+ mutex_lock(&dev->write_mutex);
+ err = _block2mtd_erase(dev, from, len);
+@@ -98,6 +106,10 @@
+
+ instr->state = MTD_ERASE_DONE;
+ mtd_erase_callback(instr);
++
++done:
++ read_unlock(&dev->bdev_mutex);
++
+ return err;
+ }
+
+@@ -109,10 +121,14 @@
+ struct page *page;
+ int index = from >> PAGE_SHIFT;
+ int offset = from & (PAGE_SIZE-1);
+- int cpylen;
++ int cpylen, err = 0;
++
++ read_lock(&dev->bdev_mutex);
++ if (!dev->blkdev || (from > mtd->size)) {
++ err = -EINVAL;
++ goto done;
++ }
+
+- if (from > mtd->size)
+- return -EINVAL;
+ if (from + len > mtd->size)
+ len = mtd->size - from;
+
+@@ -127,10 +143,14 @@
+ len = len - cpylen;
+
+ page = page_read(dev->blkdev->bd_inode->i_mapping, index);
+- if (!page)
+- return -ENOMEM;
+- if (IS_ERR(page))
+- return PTR_ERR(page);
++ if (!page) {
++ err = -ENOMEM;
++ goto done;
++ }
++ if (IS_ERR(page)) {
++ err = PTR_ERR(page);
++ goto done;
++ }
+
+ memcpy(buf, page_address(page) + offset, cpylen);
+ page_cache_release(page);
+@@ -141,7 +161,10 @@
+ offset = 0;
+ index++;
+ }
+- return 0;
++
++done:
++ read_unlock(&dev->bdev_mutex);
++ return err;
+ }
+
+
+@@ -193,12 +216,22 @@
+ size_t *retlen, const u_char *buf)
+ {
+ struct block2mtd_dev *dev = mtd->priv;
+- int err;
++ int err = 0;
++
++ read_lock(&dev->bdev_mutex);
++ if (!dev->blkdev) {
++ err = -EINVAL;
++ goto done;
++ }
+
+ if (!len)
+- return 0;
+- if (to >= mtd->size)
+- return -ENOSPC;
++ goto done;
++
++ if (to >= mtd->size) {
++ err = -ENOSPC;
++ goto done;
++ }
++
+ if (to + len > mtd->size)
+ len = mtd->size - to;
+
+@@ -207,6 +240,9 @@
+ mutex_unlock(&dev->write_mutex);
+ if (err > 0)
+ err = 0;
++
++done:
++ read_unlock(&dev->bdev_mutex);
+ return err;
+ }
+
+@@ -215,51 +251,29 @@
+ static void block2mtd_sync(struct mtd_info *mtd)
+ {
+ struct block2mtd_dev *dev = mtd->priv;
+- sync_blockdev(dev->blkdev);
+- return;
+-}
+-
+-
+-static void block2mtd_free_device(struct block2mtd_dev *dev)
+-{
+- if (!dev)
+- return;
+-
+- kfree(dev->mtd.name);
+
+- if (dev->blkdev) {
+- invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping,
+- 0, -1);
+- close_bdev_excl(dev->blkdev);
+- }
++ read_lock(&dev->bdev_mutex);
++ if (dev->blkdev)
++ sync_blockdev(dev->blkdev);
++ read_unlock(&dev->bdev_mutex);
+
+- kfree(dev);
++ return;
+ }
+
+
+-/* FIXME: ensure that mtd->size % erase_size == 0 */
+-static struct block2mtd_dev *add_device(char *devname, int erase_size, char *mtdname)
++static int _open_bdev(struct block2mtd_dev *dev)
+ {
+ struct block_device *bdev;
+- struct block2mtd_dev *dev;
+- struct mtd_partition *part;
+-
+- if (!devname)
+- return NULL;
+-
+- dev = kzalloc(sizeof(struct block2mtd_dev), GFP_KERNEL);
+- if (!dev)
+- return NULL;
+
+ /* Get a handle on the device */
+- bdev = open_bdev_excl(devname, O_RDWR, NULL);
++ bdev = open_bdev_excl(dev->devname, O_RDWR, NULL);
+ #ifndef MODULE
+ if (IS_ERR(bdev)) {
+
+ /* We might not have rootfs mounted at this point. Try
+ to resolve the device name by other means. */
+
+- dev_t devt = name_to_dev_t(devname);
++ dev_t devt = name_to_dev_t(dev->devname);
+ if (devt) {
+ bdev = open_by_devnum(devt, FMODE_WRITE | FMODE_READ);
+ }
+@@ -267,17 +281,96 @@
+ #endif
+
+ if (IS_ERR(bdev)) {
+- ERROR("error: cannot open device %s", devname);
+- goto devinit_err;
++ ERROR("error: cannot open device %s", dev->devname);
++ return 1;
+ }
+ dev->blkdev = bdev;
+
+ if (MAJOR(bdev->bd_dev) == MTD_BLOCK_MAJOR) {
+ ERROR("attempting to use an MTD device as a block device");
+- goto devinit_err;
++ return 1;
+ }
+
++ return 0;
++}
++
++static void _close_bdev(struct block2mtd_dev *dev)
++{
++ struct block_device *bdev;
++
++ if (!dev->blkdev)
++ return;
++
++ bdev = dev->blkdev;
++ invalidate_mapping_pages(dev->blkdev->bd_inode->i_mapping, 0, -1);
++ close_bdev_excl(dev->blkdev);
++ dev->blkdev = NULL;
++}
++
++static void block2mtd_free_device(struct block2mtd_dev *dev)
++{
++ if (!dev)
++ return;
++
++ kfree(dev->mtd.name);
++ _close_bdev(dev);
++ kfree(dev);
++}
++
++
++static int block2mtd_refresh(struct mtd_info *mtd)
++{
++ struct block2mtd_dev *dev = mtd->priv;
++ struct block_device *bdev;
++ dev_t devt;
++ int err = 0;
++
++ /* no other mtd function can run at this point */
++ write_lock(&dev->bdev_mutex);
++
++ /* get the device number for the whole disk */
++ devt = MKDEV(MAJOR(dev->blkdev->bd_dev), 0);
++
++ /* close the old block device */
++ _close_bdev(dev);
++
++ /* open the whole disk, issue a partition rescan, then */
++ bdev = open_by_devnum(devt, FMODE_WRITE | FMODE_READ);
++ if (!bdev || !bdev->bd_disk)
++ err = -EINVAL;
++ else {
++ err = rescan_partitions(bdev->bd_disk, bdev);
++ }
++ if (bdev)
++ close_bdev_excl(bdev);
++
++ /* try to open the partition block device again */
++ _open_bdev(dev);
++ write_unlock(&dev->bdev_mutex);
++
++ return err;
++}
++
++/* FIXME: ensure that mtd->size % erase_size == 0 */
++static struct block2mtd_dev *add_device(char *devname, int erase_size, char *mtdname)
++{
++ struct block2mtd_dev *dev;
++ struct mtd_partition *part;
++
++ if (!devname)
++ return NULL;
++
++ dev = kzalloc(sizeof(struct block2mtd_dev) + strlen(devname) + 1, GFP_KERNEL);
++ if (!dev)
++ return NULL;
++
++ strcpy(dev->devname, devname);
++
++ if (_open_bdev(dev))
++ goto devinit_err;
++
+ mutex_init(&dev->write_mutex);
++ rwlock_init(&dev->bdev_mutex);
+
+ /* Setup the MTD structure */
+ /* make the name contain the block device in */
+@@ -304,6 +397,7 @@
+ dev->mtd.read = block2mtd_read;
+ dev->mtd.priv = dev;
+ dev->mtd.owner = THIS_MODULE;
++ dev->mtd.refresh_device = block2mtd_refresh;
+
+ part = kzalloc(sizeof(struct mtd_partition), GFP_KERNEL);
+ part->name = dev->mtd.name;
+Index: linux-2.6.23-rc6/drivers/mtd/mtdchar.c
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/mtd/mtdchar.c 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/drivers/mtd/mtdchar.c 2007-09-21 16:23:59.000000000 +0800
+@@ -17,6 +17,7 @@
+
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/compatmac.h>
++#include <linux/mtd/partitions.h>
+
+ #include <asm/uaccess.h>
+
+@@ -753,6 +754,13 @@
+ file->f_pos = 0;
+ break;
+ }
++#ifdef CONFIG_MTD_PARTITIONS
++ case MTDREFRESH:
++ {
++ ret = refresh_mtd_partitions(mtd);
++ break;
++ }
++#endif
+
+ default:
+ ret = -ENOTTY;
+Index: linux-2.6.23-rc6/include/linux/mtd/mtd.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/mtd/mtd.h 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/mtd/mtd.h 2007-09-21 16:23:59.000000000 +0800
+@@ -98,6 +98,7 @@
+ uint8_t *oobbuf;
+ };
+
++struct mtd_info;
+ struct mtd_info {
+ u_char type;
+ u_int32_t flags;
+@@ -195,6 +196,9 @@
+ struct module *owner;
+ int usecount;
+
++ int (*refresh_device)(struct mtd_info *mtd);
++ struct mtd_info *split;
++
+ /* If the driver is something smart, like UBI, it may need to maintain
+ * its own reference counting. The below functions are only for driver.
+ * The driver may register its callbacks. These callbacks are not
+Index: linux-2.6.23-rc6/include/linux/mtd/partitions.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/mtd/partitions.h 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/mtd/partitions.h 2007-09-21 16:23:59.000000000 +0800
+@@ -36,6 +36,7 @@
+ * erasesize aligned (e.g. use MTDPART_OFS_NEXTBLK).
+ */
+
++struct mtd_partition;
+ struct mtd_partition {
+ char *name; /* identifier string */
+ u_int32_t size; /* partition size */
+@@ -43,6 +44,7 @@
+ u_int32_t mask_flags; /* master MTD flags to mask out for this partition */
+ struct nand_ecclayout *ecclayout; /* out of band layout for this partition (NAND only)*/
+ struct mtd_info **mtdp; /* pointer to store the MTD object */
++ int (*refresh_partition)(struct mtd_info *);
+ };
+
+ #define MTDPART_OFS_NXTBLK (-2)
+@@ -52,6 +54,7 @@
+
+ int add_mtd_partitions(struct mtd_info *, const struct mtd_partition *, int);
+ int del_mtd_partitions(struct mtd_info *);
++int refresh_mtd_partitions(struct mtd_info *);
+
+ /*
+ * Functions dealing with the various ways of partitioning the space
+Index: linux-2.6.23-rc6/include/mtd/mtd-abi.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/mtd/mtd-abi.h 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/include/mtd/mtd-abi.h 2007-09-21 16:23:59.000000000 +0800
+@@ -95,6 +95,7 @@
+ #define ECCGETLAYOUT _IOR('M', 17, struct nand_ecclayout)
+ #define ECCGETSTATS _IOR('M', 18, struct mtd_ecc_stats)
+ #define MTDFILEMODE _IO('M', 19)
++#define MTDREFRESH _IO('M', 23)
+
+ /*
+ * Obsolete legacy interface. Keep it in order not to break userspace
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_layer7.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_layer7.h 2007-09-21 16:23:59.000000000 +0800
+@@ -0,0 +1,26 @@
++/*
++ By Matthew Strait <quadong@users.sf.net>, Dec 2003.
++ http://l7-filter.sf.net
++
++ This program is free software; you can redistribute it and/or
++ modify it under the terms of the GNU General Public License
++ as published by the Free Software Foundation; either version
++ 2 of the License, or (at your option) any later version.
++ http://www.gnu.org/licenses/gpl.txt
++*/
++
++#ifndef _IPT_LAYER7_H
++#define _IPT_LAYER7_H
++
++#define MAX_PATTERN_LEN 8192
++#define MAX_PROTOCOL_LEN 256
++
++typedef char *(*proc_ipt_search) (char *, char, char *);
++
++struct ipt_layer7_info {
++ char protocol[MAX_PROTOCOL_LEN];
++ char invert:1;
++ char pattern[MAX_PATTERN_LEN];
++};
++
++#endif /* _IPT_LAYER7_H */
+Index: linux-2.6.23-rc6/net/netfilter/nf_conntrack_core.c
+===================================================================
+--- linux-2.6.23-rc6.orig/net/netfilter/nf_conntrack_core.c 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/net/netfilter/nf_conntrack_core.c 2007-09-21 16:23:59.000000000 +0800
+@@ -207,6 +207,13 @@
+ * too. */
+ nf_ct_remove_expectations(ct);
+
++ #if defined(CONFIG_IP_NF_MATCH_LAYER7) || defined(CONFIG_IP_NF_MATCH_LAYER7_MODULE)
++ if(ct->layer7.app_proto)
++ kfree(ct->layer7.app_proto);
++ if(ct->layer7.app_data)
++ kfree(ct->layer7.app_data);
++ #endif
++
+ /* We overload first tuple to link into unconfirmed list. */
+ if (!nf_ct_is_confirmed(ct)) {
+ BUG_ON(hlist_unhashed(&ct->tuplehash[IP_CT_DIR_ORIGINAL].hnode));
+Index: linux-2.6.23-rc6/net/netfilter/nf_conntrack_standalone.c
+===================================================================
+--- linux-2.6.23-rc6.orig/net/netfilter/nf_conntrack_standalone.c 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/net/netfilter/nf_conntrack_standalone.c 2007-09-21 16:23:59.000000000 +0800
+@@ -179,6 +179,12 @@
+ return -ENOSPC;
+ #endif
+
++#if defined(CONFIG_IP_NF_MATCH_LAYER7) || defined(CONFIG_IP_NF_MATCH_LAYER7_MODULE)
++ if(conntrack->layer7.app_proto)
++ if (seq_printf(s, "l7proto=%s ",conntrack->layer7.app_proto))
++ return 1;
++#endif
++
+ if (seq_printf(s, "use=%u\n", atomic_read(&conntrack->ct_general.use)))
+ return -ENOSPC;
+
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c 2007-09-21 16:23:59.000000000 +0800
+@@ -0,0 +1,583 @@
++/*
++ Kernel module to match application layer (OSI layer 7) data in connections.
++
++ http://l7-filter.sf.net
++
++ By Matthew Strait and Ethan Sommer, 2003-2006.
++
++ This program is free software; you can redistribute it and/or
++ modify it under the terms of the GNU General Public License
++ as published by the Free Software Foundation; either version
++ 2 of the License, or (at your option) any later version.
++ http://www.gnu.org/licenses/gpl.txt
++
++ Based on ipt_string.c (C) 2000 Emmanuel Roger <winfield@freegates.be>
++ and cls_layer7.c (C) 2003 Matthew Strait, Ethan Sommer, Justin Levandoski
++
++ Jan Engelhardt, 2007-03-11: Arrange to compile with nf_conntrack
++*/
++
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/proc_fs.h>
++#include <linux/ctype.h>
++#include <net/ip.h>
++#include <net/tcp.h>
++#include <net/netfilter/nf_conntrack.h>
++#include <net/netfilter/nf_nat_rule.h>
++#include <linux/spinlock.h>
++
++#include "regexp/regexp.c"
++
++#include <linux/netfilter_ipv4/ipt_layer7.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++
++MODULE_AUTHOR("Matthew Strait <quadong@users.sf.net>, Ethan Sommer <sommere@users.sf.net>");
++MODULE_LICENSE("GPL");
++MODULE_DESCRIPTION("iptables application layer match module");
++MODULE_VERSION("2.0");
++
++static int maxdatalen = 2048; // this is the default
++module_param(maxdatalen, int, 0444);
++MODULE_PARM_DESC(maxdatalen, "maximum bytes of data looked at by l7-filter");
++
++#ifdef CONFIG_IP_NF_MATCH_LAYER7_DEBUG
++ #define DPRINTK(format,args...) printk(format,##args)
++#else
++ #define DPRINTK(format,args...)
++#endif
++
++#define TOTAL_PACKETS master_conntrack->counters[IP_CT_DIR_ORIGINAL].packets + \
++ master_conntrack->counters[IP_CT_DIR_REPLY].packets
++
++/* Number of packets whose data we look at.
++This can be modified through /proc/net/layer7_numpackets */
++static int num_packets = 10;
++
++static struct pattern_cache {
++ char * regex_string;
++ regexp * pattern;
++ struct pattern_cache * next;
++} * first_pattern_cache = NULL;
++
++/* I'm new to locking. Here are my assumptions:
++
++- No one will write to /proc/net/layer7_numpackets over and over very fast;
++ if they did, nothing awful would happen.
++
++- This code will never be processing the same packet twice at the same time,
++ because iptables rules are traversed in order.
++
++- It doesn't matter if two packets from different connections are in here at
++ the same time, because they don't share any data.
++
++- It _does_ matter if two packets from the same connection (or one from a
++ master and one from its child) are here at the same time. In this case,
++ we have to protect the conntracks and the list of compiled patterns.
++*/
++DEFINE_RWLOCK(ct_lock);
++DEFINE_SPINLOCK(list_lock);
++
++#ifdef CONFIG_IP_NF_MATCH_LAYER7_DEBUG
++/* Converts an unfriendly string into a friendly one by
++replacing unprintables with periods and all whitespace with " ". */
++static char * friendly_print(unsigned char * s)
++{
++ char * f = kmalloc(strlen(s) + 1, GFP_ATOMIC);
++ int i;
++
++ if(!f) {
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory in friendly_print, bailing.\n");
++ return NULL;
++ }
++
++ for(i = 0; i < strlen(s); i++){
++ if(isprint(s[i]) && s[i] < 128) f[i] = s[i];
++ else if(isspace(s[i])) f[i] = ' ';
++ else f[i] = '.';
++ }
++ f[i] = '\0';
++ return f;
++}
++
++static char dec2hex(int i)
++{
++ switch (i) {
++ case 0 ... 9:
++ return (char)(i + '0');
++ break;
++ case 10 ... 15:
++ return (char)(i - 10 + 'a');
++ break;
++ default:
++ if (net_ratelimit())
++ printk("Problem in dec2hex\n");
++ return '\0';
++ }
++}
++
++static char * hex_print(unsigned char * s)
++{
++ char * g = kmalloc(strlen(s)*3 + 1, GFP_ATOMIC);
++ int i;
++
++ if(!g) {
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory in hex_print, bailing.\n");
++ return NULL;
++ }
++
++ for(i = 0; i < strlen(s); i++) {
++ g[i*3 ] = dec2hex(s[i]/16);
++ g[i*3 + 1] = dec2hex(s[i]%16);
++ g[i*3 + 2] = ' ';
++ }
++ g[i*3] = '\0';
++
++ return g;
++}
++#endif // DEBUG
++
++/* Use instead of regcomp. As we expect to be seeing the same regexps over and
++over again, it make sense to cache the results. */
++static regexp * compile_and_cache(char * regex_string, char * protocol)
++{
++ struct pattern_cache * node = first_pattern_cache;
++ struct pattern_cache * last_pattern_cache = first_pattern_cache;
++ struct pattern_cache * tmp;
++ unsigned int len;
++
++ while (node != NULL) {
++ if (!strcmp(node->regex_string, regex_string))
++ return node->pattern;
++
++ last_pattern_cache = node;/* points at the last non-NULL node */
++ node = node->next;
++ }
++
++ /* If we reach the end of the list, then we have not yet cached
++ the pattern for this regex. Let's do that now.
++ Be paranoid about running out of memory to avoid list corruption. */
++ tmp = kmalloc(sizeof(struct pattern_cache), GFP_ATOMIC);
++
++ if(!tmp) {
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory in compile_and_cache, bailing.\n");
++ return NULL;
++ }
++
++ tmp->regex_string = kmalloc(strlen(regex_string) + 1, GFP_ATOMIC);
++ tmp->pattern = kmalloc(sizeof(struct regexp), GFP_ATOMIC);
++ tmp->next = NULL;
++
++ if(!tmp->regex_string || !tmp->pattern) {
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory in compile_and_cache, bailing.\n");
++ kfree(tmp->regex_string);
++ kfree(tmp->pattern);
++ kfree(tmp);
++ return NULL;
++ }
++
++ /* Ok. The new node is all ready now. */
++ node = tmp;
++
++ if(first_pattern_cache == NULL) /* list is empty */
++ first_pattern_cache = node; /* make node the beginning */
++ else
++ last_pattern_cache->next = node; /* attach node to the end */
++
++ /* copy the string and compile the regex */
++ len = strlen(regex_string);
++ DPRINTK("About to compile this: \"%s\"\n", regex_string);
++ node->pattern = regcomp(regex_string, &len);
++ if ( !node->pattern ) {
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: Error compiling regexp \"%s\" (%s)\n", regex_string, protocol);
++ /* pattern is now cached as NULL, so we won't try again. */
++ }
++
++ strcpy(node->regex_string, regex_string);
++ return node->pattern;
++}
++
++static int can_handle(const struct sk_buff *skb)
++{
++ if(!ip_hdr(skb)) /* not IP */
++ return 0;
++ if(ip_hdr(skb)->protocol != IPPROTO_TCP &&
++ ip_hdr(skb)->protocol != IPPROTO_UDP &&
++ ip_hdr(skb)->protocol != IPPROTO_ICMP)
++ return 0;
++ return 1;
++}
++
++/* Returns offset the into the skb->data that the application data starts */
++static int app_data_offset(const struct sk_buff *skb)
++{
++ /* In case we are ported somewhere (ebtables?) where ip_hdr(skb)
++ isn't set, this can be gotten from 4*(skb->data[0] & 0x0f) as well. */
++ int ip_hl = 4*ip_hdr(skb)->ihl;
++
++ if( ip_hdr(skb)->protocol == IPPROTO_TCP ) {
++ /* 12 == offset into TCP header for the header length field.
++ Can't get this with skb->h.th->doff because the tcphdr
++ struct doesn't get set when routing (this is confirmed to be
++ true in Netfilter as well as QoS.) */
++ int tcp_hl = 4*(skb->data[ip_hl + 12] >> 4);
++
++ return ip_hl + tcp_hl;
++ } else if( ip_hdr(skb)->protocol == IPPROTO_UDP ) {
++ return ip_hl + 8; /* UDP header is always 8 bytes */
++ } else if( ip_hdr(skb)->protocol == IPPROTO_ICMP ) {
++ return ip_hl + 8; /* ICMP header is 8 bytes */
++ } else {
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: tried to handle unknown protocol!\n");
++ return ip_hl + 8; /* something reasonable */
++ }
++}
++
++/* handles whether there's a match when we aren't appending data anymore */
++static int match_no_append(struct nf_conn * conntrack, struct nf_conn * master_conntrack,
++ enum ip_conntrack_info ctinfo, enum ip_conntrack_info master_ctinfo,
++ struct ipt_layer7_info * info)
++{
++ /* If we're in here, throw the app data away */
++ write_lock(&ct_lock);
++ if(master_conntrack->layer7.app_data != NULL) {
++
++ #ifdef CONFIG_IP_NF_MATCH_LAYER7_DEBUG
++ if(!master_conntrack->layer7.app_proto) {
++ char * f = friendly_print(master_conntrack->layer7.app_data);
++ char * g = hex_print(master_conntrack->layer7.app_data);
++ DPRINTK("\nl7-filter gave up after %d bytes (%d packets):\n%s\n",
++ strlen(f), TOTAL_PACKETS, f);
++ kfree(f);
++ DPRINTK("In hex: %s\n", g);
++ kfree(g);
++ }
++ #endif
++
++ kfree(master_conntrack->layer7.app_data);
++ master_conntrack->layer7.app_data = NULL; /* don't free again */
++ }
++ write_unlock(&ct_lock);
++
++ if(master_conntrack->layer7.app_proto){
++ /* Here child connections set their .app_proto (for /proc/net/ip_conntrack) */
++ write_lock(&ct_lock);
++ if(!conntrack->layer7.app_proto) {
++ conntrack->layer7.app_proto = kmalloc(strlen(master_conntrack->layer7.app_proto)+1, GFP_ATOMIC);
++ if(!conntrack->layer7.app_proto){
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory in match_no_append, bailing.\n");
++ write_unlock(&ct_lock);
++ return 1;
++ }
++ strcpy(conntrack->layer7.app_proto, master_conntrack->layer7.app_proto);
++ }
++ write_unlock(&ct_lock);
++
++ return (!strcmp(master_conntrack->layer7.app_proto, info->protocol));
++ }
++ else {
++ /* If not classified, set to "unknown" to distinguish from
++ connections that are still being tested. */
++ write_lock(&ct_lock);
++ master_conntrack->layer7.app_proto = kmalloc(strlen("unknown")+1, GFP_ATOMIC);
++ if(!master_conntrack->layer7.app_proto){
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory in match_no_append, bailing.\n");
++ write_unlock(&ct_lock);
++ return 1;
++ }
++ strcpy(master_conntrack->layer7.app_proto, "unknown");
++ write_unlock(&ct_lock);
++ return 0;
++ }
++}
++
++/* add the new app data to the conntrack. Return number of bytes added. */
++static int add_data(struct nf_conn * master_conntrack,
++ char * app_data, int appdatalen)
++{
++ int length = 0, i;
++ int oldlength = master_conntrack->layer7.app_data_len;
++
++ // This is a fix for a race condition by Deti Fliegl. However, I'm not
++ // clear on whether the race condition exists or whether this really
++ // fixes it. I might just be being dense... Anyway, if it's not really
++ // a fix, all it does is waste a very small amount of time.
++ if(!master_conntrack->layer7.app_data) return 0;
++
++ /* Strip nulls. Make everything lower case (our regex lib doesn't
++ do case insensitivity). Add it to the end of the current data. */
++ for(i = 0; i < maxdatalen-oldlength-1 &&
++ i < appdatalen; i++) {
++ if(app_data[i] != '\0') {
++ master_conntrack->layer7.app_data[length+oldlength] =
++ /* the kernel version of tolower mungs 'upper ascii' */
++ isascii(app_data[i])? tolower(app_data[i]) : app_data[i];
++ length++;
++ }
++ }
++
++ master_conntrack->layer7.app_data[length+oldlength] = '\0';
++ master_conntrack->layer7.app_data_len = length + oldlength;
++
++ return length;
++}
++
++/* Returns true on match and false otherwise. */
++static bool match(const struct sk_buff *skbin,
++ const struct net_device *in, const struct net_device *out,
++ const struct xt_match *match, const void *matchinfo,
++ int offset, unsigned int protoff, bool *hotdrop)
++{
++ /* sidestep const without getting a compiler warning... */
++ struct sk_buff * skb = (struct sk_buff *)skbin;
++
++ struct ipt_layer7_info * info = (struct ipt_layer7_info *)matchinfo;
++ enum ip_conntrack_info master_ctinfo, ctinfo;
++ struct nf_conn *master_conntrack;
++ struct nf_conn *conntrack;
++ unsigned char * app_data;
++ unsigned int pattern_result, appdatalen;
++ regexp * comppattern;
++
++ if(!can_handle(skb)){
++ DPRINTK("layer7: This is some protocol I can't handle.\n");
++ return info->invert;
++ }
++
++ /* Treat parent & all its children together as one connection, except
++ for the purpose of setting conntrack->layer7.app_proto in the actual
++ connection. This makes /proc/net/ip_conntrack more satisfying. */
++ if(((conntrack = nf_ct_get((struct sk_buff *)skb, &ctinfo)) == NULL) ||
++ ((master_conntrack = nf_ct_get((struct sk_buff *)skb, &master_ctinfo)) == NULL)) {
++ return info->invert;
++ }
++
++ /* Try to get a master conntrack (and its master etc) for FTP, etc. */
++ while (master_ct(master_conntrack) != NULL)
++ master_conntrack = master_ct(master_conntrack);
++
++ /* if we've classified it or seen too many packets */
++ if(TOTAL_PACKETS > num_packets ||
++ master_conntrack->layer7.app_proto) {
++
++ pattern_result = match_no_append(conntrack, master_conntrack, ctinfo, master_ctinfo, info);
++
++ /* skb->cb[0] == seen. Don't do things twice if there are multiple l7
++ rules. I'm not sure that using cb for this purpose is correct, even though
++ it says "put your private variables there". But it doesn't look like it
++ is being used for anything else in the skbs that make it here. */
++ skb->cb[0] = 1; /* marking it seen here is probably irrelevant, but consistant */
++
++ return (pattern_result ^ info->invert);
++ }
++
++ if(skb_is_nonlinear(skb)){
++ if(skb_linearize(skb) != 0){
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: failed to linearize packet, bailing.\n");
++ return info->invert;
++ }
++ }
++
++ /* now that the skb is linearized, it's safe to set these. */
++ app_data = skb->data + app_data_offset(skb);
++ appdatalen = skb->tail - app_data;
++
++ spin_lock_bh(&list_lock);
++ /* the return value gets checked later, when we're ready to use it */
++ comppattern = compile_and_cache(info->pattern, info->protocol);
++ spin_unlock_bh(&list_lock);
++
++ /* On the first packet of a connection, allocate space for app data */
++ write_lock(&ct_lock);
++ if(TOTAL_PACKETS == 1 && !skb->cb[0] && !master_conntrack->layer7.app_data) {
++ master_conntrack->layer7.app_data = kmalloc(maxdatalen, GFP_ATOMIC);
++ if(!master_conntrack->layer7.app_data){
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory in match, bailing.\n");
++ write_unlock(&ct_lock);
++ return info->invert;
++ }
++
++ master_conntrack->layer7.app_data[0] = '\0';
++ }
++ write_unlock(&ct_lock);
++
++ /* Can be here, but unallocated, if numpackets is increased near
++ the beginning of a connection */
++ if(master_conntrack->layer7.app_data == NULL)
++ return (info->invert); /* unmatched */
++
++ if(!skb->cb[0]){
++ int newbytes;
++ write_lock(&ct_lock);
++ newbytes = add_data(master_conntrack, app_data, appdatalen);
++ write_unlock(&ct_lock);
++
++ if(newbytes == 0) { /* didn't add any data */
++ skb->cb[0] = 1;
++ /* Didn't match before, not going to match now */
++ return info->invert;
++ }
++ }
++
++ /* If looking for "unknown", then never match. "Unknown" means that
++ we've given up; we're still trying with these packets. */
++ read_lock(&ct_lock);
++ if(!strcmp(info->protocol, "unknown")) {
++ pattern_result = 0;
++ /* If looking for "unset", then always match. "Unset" means that we
++ haven't yet classified the connection. */
++ } else if(!strcmp(info->protocol, "unset")) {
++ pattern_result = 2;
++ DPRINTK("layer7: matched unset: not yet classified (%d/%d packets)\n", TOTAL_PACKETS, num_packets);
++ /* If the regexp failed to compile, don't bother running it */
++ } else if(comppattern && regexec(comppattern, master_conntrack->layer7.app_data)) {
++ DPRINTK("layer7: matched %s\n", info->protocol);
++ pattern_result = 1;
++ } else pattern_result = 0;
++ read_unlock(&ct_lock);
++
++ if(pattern_result == 1) {
++ write_lock(&ct_lock);
++ master_conntrack->layer7.app_proto = kmalloc(strlen(info->protocol)+1, GFP_ATOMIC);
++ if(!master_conntrack->layer7.app_proto){
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory in match, bailing.\n");
++ write_unlock(&ct_lock);
++ return (pattern_result ^ info->invert);
++ }
++ strcpy(master_conntrack->layer7.app_proto, info->protocol);
++ write_unlock(&ct_lock);
++ } else if(pattern_result > 1) { /* cleanup from "unset" */
++ pattern_result = 1;
++ }
++
++ /* mark the packet seen */
++ skb->cb[0] = 1;
++
++ return (pattern_result ^ info->invert);
++}
++
++static struct xt_match layer7_match = {
++ .name = "layer7",
++ .match = &match,
++ .matchsize = sizeof(struct ipt_layer7_info),
++ .family = AF_INET,
++ .me = THIS_MODULE
++};
++
++/* taken from drivers/video/modedb.c */
++static int my_atoi(const char *s)
++{
++ int val = 0;
++
++ for (;; s++) {
++ switch (*s) {
++ case '0'...'9':
++ val = 10*val+(*s-'0');
++ break;
++ default:
++ return val;
++ }
++ }
++}
++
++/* write out num_packets to userland. */
++static int layer7_read_proc(char* page, char ** start, off_t off, int count,
++ int* eof, void * data)
++{
++ if(num_packets > 99 && net_ratelimit())
++ printk(KERN_ERR "layer7: NOT REACHED. num_packets too big\n");
++
++ page[0] = num_packets/10 + '0';
++ page[1] = num_packets%10 + '0';
++ page[2] = '\n';
++ page[3] = '\0';
++
++ *eof=1;
++
++ return 3;
++}
++
++/* Read in num_packets from userland */
++static int layer7_write_proc(struct file* file, const char* buffer,
++ unsigned long count, void *data)
++{
++ char * foo = kmalloc(count, GFP_ATOMIC);
++
++ if(!foo){
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory, bailing. num_packets unchanged.\n");
++ return count;
++ }
++
++ if(copy_from_user(foo, buffer, count)) {
++ return -EFAULT;
++ }
++
++
++ num_packets = my_atoi(foo);
++ kfree (foo);
++
++ /* This has an arbitrary limit to make the math easier. I'm lazy.
++ But anyway, 99 is a LOT! If you want more, you're doing it wrong! */
++ if(num_packets > 99) {
++ printk(KERN_WARNING "layer7: num_packets can't be > 99.\n");
++ num_packets = 99;
++ } else if(num_packets < 1) {
++ printk(KERN_WARNING "layer7: num_packets can't be < 1.\n");
++ num_packets = 1;
++ }
++
++ return count;
++}
++
++/* register the proc file */
++static void layer7_init_proc(void)
++{
++ struct proc_dir_entry* entry;
++ entry = create_proc_entry("layer7_numpackets", 0644, proc_net);
++ entry->read_proc = layer7_read_proc;
++ entry->write_proc = layer7_write_proc;
++}
++
++static void layer7_cleanup_proc(void)
++{
++ remove_proc_entry("layer7_numpackets", proc_net);
++}
++
++static int __init ipt_layer7_init(void)
++{
++ need_conntrack();
++
++ layer7_init_proc();
++ if(maxdatalen < 1) {
++ printk(KERN_WARNING "layer7: maxdatalen can't be < 1, using 1\n");
++ maxdatalen = 1;
++ }
++ /* This is not a hard limit. It's just here to prevent people from
++ bringing their slow machines to a grinding halt. */
++ else if(maxdatalen > 65536) {
++ printk(KERN_WARNING "layer7: maxdatalen can't be > 65536, using 65536\n");
++ maxdatalen = 65536;
++ }
++ return xt_register_match(&layer7_match);
++}
++
++static void __exit ipt_layer7_fini(void)
++{
++ layer7_cleanup_proc();
++ xt_unregister_match(&layer7_match);
++}
++
++module_init(ipt_layer7_init);
++module_exit(ipt_layer7_fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Kconfig 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig 2007-09-21 16:23:59.000000000 +0800
+@@ -63,6 +63,24 @@
+
+ To compile it as a module, choose M here. If unsure, say N.
+
++config IP_NF_MATCH_LAYER7
++ tristate "Layer 7 match support (EXPERIMENTAL)"
++ depends on IP_NF_IPTABLES && NF_CT_ACCT && NF_CONNTRACK && EXPERIMENTAL
++ help
++ Say Y if you want to be able to classify connections (and their
++ packets) based on regular expression matching of their application
++ layer data. This is one way to classify applications such as
++ peer-to-peer filesharing systems that do not always use the same
++ port.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++config IP_NF_MATCH_LAYER7_DEBUG
++ bool "Layer 7 debugging output"
++ depends on IP_NF_MATCH_LAYER7
++ help
++ Say Y to get lots of debugging output.
++
+ config IP_NF_MATCH_TOS
+ tristate "TOS match support"
+ depends on IP_NF_IPTABLES
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Makefile 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Makefile 2007-09-21 16:23:59.000000000 +0800
+@@ -50,6 +50,8 @@
+ obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o
+ obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o
+
++obj-$(CONFIG_IP_NF_MATCH_LAYER7) += ipt_layer7.o
++
+ # targets
+ obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
+ obj-$(CONFIG_IP_NF_TARGET_TOS) += ipt_TOS.o
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/regexp/regexp.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/regexp/regexp.c 2007-09-21 16:23:59.000000000 +0800
+@@ -0,0 +1,1197 @@
++/*
++ * regcomp and regexec -- regsub and regerror are elsewhere
++ * @(#)regexp.c 1.3 of 18 April 87
++ *
++ * Copyright (c) 1986 by University of Toronto.
++ * Written by Henry Spencer. Not derived from licensed software.
++ *
++ * Permission is granted to anyone to use this software for any
++ * purpose on any computer system, and to redistribute it freely,
++ * subject to the following restrictions:
++ *
++ * 1. The author is not responsible for the consequences of use of
++ * this software, no matter how awful, even if they arise
++ * from defects in it.
++ *
++ * 2. The origin of this software must not be misrepresented, either
++ * by explicit claim or by omission.
++ *
++ * 3. Altered versions must be plainly marked as such, and must not
++ * be misrepresented as being the original software.
++ *
++ * Beware that some of this code is subtly aware of the way operator
++ * precedence is structured in regular expressions. Serious changes in
++ * regular-expression syntax might require a total rethink.
++ *
++ * This code was modified by Ethan Sommer to work within the kernel
++ * (it now uses kmalloc etc..)
++ *
++ * Modified slightly by Matthew Strait to use more modern C.
++ */
++
++#include "regexp.h"
++#include "regmagic.h"
++
++/* added by ethan and matt. Lets it work in both kernel and user space.
++(So iptables can use it, for instance.) Yea, it goes both ways... */
++#if __KERNEL__
++ #define malloc(foo) kmalloc(foo,GFP_ATOMIC)
++#else
++ #define printk(format,args...) printf(format,##args)
++#endif
++
++void regerror(char * s)
++{
++ printk("<3>Regexp: %s\n", s);
++ /* NOTREACHED */
++}
++
++/*
++ * The "internal use only" fields in regexp.h are present to pass info from
++ * compile to execute that permits the execute phase to run lots faster on
++ * simple cases. They are:
++ *
++ * regstart char that must begin a match; '\0' if none obvious
++ * reganch is the match anchored (at beginning-of-line only)?
++ * regmust string (pointer into program) that match must include, or NULL
++ * regmlen length of regmust string
++ *
++ * Regstart and reganch permit very fast decisions on suitable starting points
++ * for a match, cutting down the work a lot. Regmust permits fast rejection
++ * of lines that cannot possibly match. The regmust tests are costly enough
++ * that regcomp() supplies a regmust only if the r.e. contains something
++ * potentially expensive (at present, the only such thing detected is * or +
++ * at the start of the r.e., which can involve a lot of backup). Regmlen is
++ * supplied because the test in regexec() needs it and regcomp() is computing
++ * it anyway.
++ */
++
++/*
++ * Structure for regexp "program". This is essentially a linear encoding
++ * of a nondeterministic finite-state machine (aka syntax charts or
++ * "railroad normal form" in parsing technology). Each node is an opcode
++ * plus a "next" pointer, possibly plus an operand. "Next" pointers of
++ * all nodes except BRANCH implement concatenation; a "next" pointer with
++ * a BRANCH on both ends of it is connecting two alternatives. (Here we
++ * have one of the subtle syntax dependencies: an individual BRANCH (as
++ * opposed to a collection of them) is never concatenated with anything
++ * because of operator precedence.) The operand of some types of node is
++ * a literal string; for others, it is a node leading into a sub-FSM. In
++ * particular, the operand of a BRANCH node is the first node of the branch.
++ * (NB this is *not* a tree structure: the tail of the branch connects
++ * to the thing following the set of BRANCHes.) The opcodes are:
++ */
++
++/* definition number opnd? meaning */
++#define END 0 /* no End of program. */
++#define BOL 1 /* no Match "" at beginning of line. */
++#define EOL 2 /* no Match "" at end of line. */
++#define ANY 3 /* no Match any one character. */
++#define ANYOF 4 /* str Match any character in this string. */
++#define ANYBUT 5 /* str Match any character not in this string. */
++#define BRANCH 6 /* node Match this alternative, or the next... */
++#define BACK 7 /* no Match "", "next" ptr points backward. */
++#define EXACTLY 8 /* str Match this string. */
++#define NOTHING 9 /* no Match empty string. */
++#define STAR 10 /* node Match this (simple) thing 0 or more times. */
++#define PLUS 11 /* node Match this (simple) thing 1 or more times. */
++#define OPEN 20 /* no Mark this point in input as start of #n. */
++ /* OPEN+1 is number 1, etc. */
++#define CLOSE 30 /* no Analogous to OPEN. */
++
++/*
++ * Opcode notes:
++ *
++ * BRANCH The set of branches constituting a single choice are hooked
++ * together with their "next" pointers, since precedence prevents
++ * anything being concatenated to any individual branch. The
++ * "next" pointer of the last BRANCH in a choice points to the
++ * thing following the whole choice. This is also where the
++ * final "next" pointer of each individual branch points; each
++ * branch starts with the operand node of a BRANCH node.
++ *
++ * BACK Normal "next" pointers all implicitly point forward; BACK
++ * exists to make loop structures possible.
++ *
++ * STAR,PLUS '?', and complex '*' and '+', are implemented as circular
++ * BRANCH structures using BACK. Simple cases (one character
++ * per match) are implemented with STAR and PLUS for speed
++ * and to minimize recursive plunges.
++ *
++ * OPEN,CLOSE ...are numbered at compile time.
++ */
++
++/*
++ * A node is one char of opcode followed by two chars of "next" pointer.
++ * "Next" pointers are stored as two 8-bit pieces, high order first. The
++ * value is a positive offset from the opcode of the node containing it.
++ * An operand, if any, simply follows the node. (Note that much of the
++ * code generation knows about this implicit relationship.)
++ *
++ * Using two bytes for the "next" pointer is vast overkill for most things,
++ * but allows patterns to get big without disasters.
++ */
++#define OP(p) (*(p))
++#define NEXT(p) (((*((p)+1)&0377)<<8) + (*((p)+2)&0377))
++#define OPERAND(p) ((p) + 3)
++
++/*
++ * See regmagic.h for one further detail of program structure.
++ */
++
++
++/*
++ * Utility definitions.
++ */
++#ifndef CHARBITS
++#define UCHARAT(p) ((int)*(unsigned char *)(p))
++#else
++#define UCHARAT(p) ((int)*(p)&CHARBITS)
++#endif
++
++#define FAIL(m) { regerror(m); return(NULL); }
++#define ISMULT(c) ((c) == '*' || (c) == '+' || (c) == '?')
++#define META "^$.[()|?+*\\"
++
++/*
++ * Flags to be passed up and down.
++ */
++#define HASWIDTH 01 /* Known never to match null string. */
++#define SIMPLE 02 /* Simple enough to be STAR/PLUS operand. */
++#define SPSTART 04 /* Starts with * or +. */
++#define WORST 0 /* Worst case. */
++
++/*
++ * Global work variables for regcomp().
++ */
++struct match_globals {
++char *reginput; /* String-input pointer. */
++char *regbol; /* Beginning of input, for ^ check. */
++char **regstartp; /* Pointer to startp array. */
++char **regendp; /* Ditto for endp. */
++char *regparse; /* Input-scan pointer. */
++int regnpar; /* () count. */
++char regdummy;
++char *regcode; /* Code-emit pointer; ®dummy = don't. */
++long regsize; /* Code size. */
++};
++
++/*
++ * Forward declarations for regcomp()'s friends.
++ */
++#ifndef STATIC
++#define STATIC static
++#endif
++STATIC char *reg(struct match_globals *g, int paren,int *flagp);
++STATIC char *regbranch(struct match_globals *g, int *flagp);
++STATIC char *regpiece(struct match_globals *g, int *flagp);
++STATIC char *regatom(struct match_globals *g, int *flagp);
++STATIC char *regnode(struct match_globals *g, char op);
++STATIC char *regnext(struct match_globals *g, char *p);
++STATIC void regc(struct match_globals *g, char b);
++STATIC void reginsert(struct match_globals *g, char op, char *opnd);
++STATIC void regtail(struct match_globals *g, char *p, char *val);
++STATIC void regoptail(struct match_globals *g, char *p, char *val);
++
++
++__kernel_size_t my_strcspn(const char *s1,const char *s2)
++{
++ char *scan1;
++ char *scan2;
++ int count;
++
++ count = 0;
++ for (scan1 = (char *)s1; *scan1 != '\0'; scan1++) {
++ for (scan2 = (char *)s2; *scan2 != '\0';) /* ++ moved down. */
++ if (*scan1 == *scan2++)
++ return(count);
++ count++;
++ }
++ return(count);
++}
++
++/*
++ - regcomp - compile a regular expression into internal code
++ *
++ * We can't allocate space until we know how big the compiled form will be,
++ * but we can't compile it (and thus know how big it is) until we've got a
++ * place to put the code. So we cheat: we compile it twice, once with code
++ * generation turned off and size counting turned on, and once "for real".
++ * This also means that we don't allocate space until we are sure that the
++ * thing really will compile successfully, and we never have to move the
++ * code and thus invalidate pointers into it. (Note that it has to be in
++ * one piece because free() must be able to free it all.)
++ *
++ * Beware that the optimization-preparation code in here knows about some
++ * of the structure of the compiled regexp.
++ */
++regexp *
++regcomp(char *exp,int *patternsize)
++{
++ register regexp *r;
++ register char *scan;
++ register char *longest;
++ register int len;
++ int flags;
++ struct match_globals g;
++
++ /* commented out by ethan
++ extern char *malloc();
++ */
++
++ if (exp == NULL)
++ FAIL("NULL argument");
++
++ /* First pass: determine size, legality. */
++ g.regparse = exp;
++ g.regnpar = 1;
++ g.regsize = 0L;
++ g.regcode = &g.regdummy;
++ regc(&g, MAGIC);
++ if (reg(&g, 0, &flags) == NULL)
++ return(NULL);
++
++ /* Small enough for pointer-storage convention? */
++ if (g.regsize >= 32767L) /* Probably could be 65535L. */
++ FAIL("regexp too big");
++
++ /* Allocate space. */
++ *patternsize=sizeof(regexp) + (unsigned)g.regsize;
++ r = (regexp *)malloc(sizeof(regexp) + (unsigned)g.regsize);
++ if (r == NULL)
++ FAIL("out of space");
++
++ /* Second pass: emit code. */
++ g.regparse = exp;
++ g.regnpar = 1;
++ g.regcode = r->program;
++ regc(&g, MAGIC);
++ if (reg(&g, 0, &flags) == NULL)
++ return(NULL);
++
++ /* Dig out information for optimizations. */
++ r->regstart = '\0'; /* Worst-case defaults. */
++ r->reganch = 0;
++ r->regmust = NULL;
++ r->regmlen = 0;
++ scan = r->program+1; /* First BRANCH. */
++ if (OP(regnext(&g, scan)) == END) { /* Only one top-level choice. */
++ scan = OPERAND(scan);
++
++ /* Starting-point info. */
++ if (OP(scan) == EXACTLY)
++ r->regstart = *OPERAND(scan);
++ else if (OP(scan) == BOL)
++ r->reganch++;
++
++ /*
++ * If there's something expensive in the r.e., find the
++ * longest literal string that must appear and make it the
++ * regmust. Resolve ties in favor of later strings, since
++ * the regstart check works with the beginning of the r.e.
++ * and avoiding duplication strengthens checking. Not a
++ * strong reason, but sufficient in the absence of others.
++ */
++ if (flags&SPSTART) {
++ longest = NULL;
++ len = 0;
++ for (; scan != NULL; scan = regnext(&g, scan))
++ if (OP(scan) == EXACTLY && strlen(OPERAND(scan)) >= len) {
++ longest = OPERAND(scan);
++ len = strlen(OPERAND(scan));
++ }
++ r->regmust = longest;
++ r->regmlen = len;
++ }
++ }
++
++ return(r);
++}
++
++/*
++ - reg - regular expression, i.e. main body or parenthesized thing
++ *
++ * Caller must absorb opening parenthesis.
++ *
++ * Combining parenthesis handling with the base level of regular expression
++ * is a trifle forced, but the need to tie the tails of the branches to what
++ * follows makes it hard to avoid.
++ */
++static char *
++reg(struct match_globals *g, int paren, int *flagp /* Parenthesized? */ )
++{
++ register char *ret;
++ register char *br;
++ register char *ender;
++ register int parno = 0; /* 0 makes gcc happy */
++ int flags;
++
++ *flagp = HASWIDTH; /* Tentatively. */
++
++ /* Make an OPEN node, if parenthesized. */
++ if (paren) {
++ if (g->regnpar >= NSUBEXP)
++ FAIL("too many ()");
++ parno = g->regnpar;
++ g->regnpar++;
++ ret = regnode(g, OPEN+parno);
++ } else
++ ret = NULL;
++
++ /* Pick up the branches, linking them together. */
++ br = regbranch(g, &flags);
++ if (br == NULL)
++ return(NULL);
++ if (ret != NULL)
++ regtail(g, ret, br); /* OPEN -> first. */
++ else
++ ret = br;
++ if (!(flags&HASWIDTH))
++ *flagp &= ~HASWIDTH;
++ *flagp |= flags&SPSTART;
++ while (*g->regparse == '|') {
++ g->regparse++;
++ br = regbranch(g, &flags);
++ if (br == NULL)
++ return(NULL);
++ regtail(g, ret, br); /* BRANCH -> BRANCH. */
++ if (!(flags&HASWIDTH))
++ *flagp &= ~HASWIDTH;
++ *flagp |= flags&SPSTART;
++ }
++
++ /* Make a closing node, and hook it on the end. */
++ ender = regnode(g, (paren) ? CLOSE+parno : END);
++ regtail(g, ret, ender);
++
++ /* Hook the tails of the branches to the closing node. */
++ for (br = ret; br != NULL; br = regnext(g, br))
++ regoptail(g, br, ender);
++
++ /* Check for proper termination. */
++ if (paren && *g->regparse++ != ')') {
++ FAIL("unmatched ()");
++ } else if (!paren && *g->regparse != '\0') {
++ if (*g->regparse == ')') {
++ FAIL("unmatched ()");
++ } else
++ FAIL("junk on end"); /* "Can't happen". */
++ /* NOTREACHED */
++ }
++
++ return(ret);
++}
++
++/*
++ - regbranch - one alternative of an | operator
++ *
++ * Implements the concatenation operator.
++ */
++static char *
++regbranch(struct match_globals *g, int *flagp)
++{
++ register char *ret;
++ register char *chain;
++ register char *latest;
++ int flags;
++
++ *flagp = WORST; /* Tentatively. */
++
++ ret = regnode(g, BRANCH);
++ chain = NULL;
++ while (*g->regparse != '\0' && *g->regparse != '|' && *g->regparse != ')') {
++ latest = regpiece(g, &flags);
++ if (latest == NULL)
++ return(NULL);
++ *flagp |= flags&HASWIDTH;
++ if (chain == NULL) /* First piece. */
++ *flagp |= flags&SPSTART;
++ else
++ regtail(g, chain, latest);
++ chain = latest;
++ }
++ if (chain == NULL) /* Loop ran zero times. */
++ (void) regnode(g, NOTHING);
++
++ return(ret);
++}
++
++/*
++ - regpiece - something followed by possible [*+?]
++ *
++ * Note that the branching code sequences used for ? and the general cases
++ * of * and + are somewhat optimized: they use the same NOTHING node as
++ * both the endmarker for their branch list and the body of the last branch.
++ * It might seem that this node could be dispensed with entirely, but the
++ * endmarker role is not redundant.
++ */
++static char *
++regpiece(struct match_globals *g, int *flagp)
++{
++ register char *ret;
++ register char op;
++ register char *next;
++ int flags;
++
++ ret = regatom(g, &flags);
++ if (ret == NULL)
++ return(NULL);
++
++ op = *g->regparse;
++ if (!ISMULT(op)) {
++ *flagp = flags;
++ return(ret);
++ }
++
++ if (!(flags&HASWIDTH) && op != '?')
++ FAIL("*+ operand could be empty");
++ *flagp = (op != '+') ? (WORST|SPSTART) : (WORST|HASWIDTH);
++
++ if (op == '*' && (flags&SIMPLE))
++ reginsert(g, STAR, ret);
++ else if (op == '*') {
++ /* Emit x* as (x&|), where & means "self". */
++ reginsert(g, BRANCH, ret); /* Either x */
++ regoptail(g, ret, regnode(g, BACK)); /* and loop */
++ regoptail(g, ret, ret); /* back */
++ regtail(g, ret, regnode(g, BRANCH)); /* or */
++ regtail(g, ret, regnode(g, NOTHING)); /* null. */
++ } else if (op == '+' && (flags&SIMPLE))
++ reginsert(g, PLUS, ret);
++ else if (op == '+') {
++ /* Emit x+ as x(&|), where & means "self". */
++ next = regnode(g, BRANCH); /* Either */
++ regtail(g, ret, next);
++ regtail(g, regnode(g, BACK), ret); /* loop back */
++ regtail(g, next, regnode(g, BRANCH)); /* or */
++ regtail(g, ret, regnode(g, NOTHING)); /* null. */
++ } else if (op == '?') {
++ /* Emit x? as (x|) */
++ reginsert(g, BRANCH, ret); /* Either x */
++ regtail(g, ret, regnode(g, BRANCH)); /* or */
++ next = regnode(g, NOTHING); /* null. */
++ regtail(g, ret, next);
++ regoptail(g, ret, next);
++ }
++ g->regparse++;
++ if (ISMULT(*g->regparse))
++ FAIL("nested *?+");
++
++ return(ret);
++}
++
++/*
++ - regatom - the lowest level
++ *
++ * Optimization: gobbles an entire sequence of ordinary characters so that
++ * it can turn them into a single node, which is smaller to store and
++ * faster to run. Backslashed characters are exceptions, each becoming a
++ * separate node; the code is simpler that way and it's not worth fixing.
++ */
++static char *
++regatom(struct match_globals *g, int *flagp)
++{
++ register char *ret;
++ int flags;
++
++ *flagp = WORST; /* Tentatively. */
++
++ switch (*g->regparse++) {
++ case '^':
++ ret = regnode(g, BOL);
++ break;
++ case '$':
++ ret = regnode(g, EOL);
++ break;
++ case '.':
++ ret = regnode(g, ANY);
++ *flagp |= HASWIDTH|SIMPLE;
++ break;
++ case '[': {
++ register int class;
++ register int classend;
++
++ if (*g->regparse == '^') { /* Complement of range. */
++ ret = regnode(g, ANYBUT);
++ g->regparse++;
++ } else
++ ret = regnode(g, ANYOF);
++ if (*g->regparse == ']' || *g->regparse == '-')
++ regc(g, *g->regparse++);
++ while (*g->regparse != '\0' && *g->regparse != ']') {
++ if (*g->regparse == '-') {
++ g->regparse++;
++ if (*g->regparse == ']' || *g->regparse == '\0')
++ regc(g, '-');
++ else {
++ class = UCHARAT(g->regparse-2)+1;
++ classend = UCHARAT(g->regparse);
++ if (class > classend+1)
++ FAIL("invalid [] range");
++ for (; class <= classend; class++)
++ regc(g, class);
++ g->regparse++;
++ }
++ } else
++ regc(g, *g->regparse++);
++ }
++ regc(g, '\0');
++ if (*g->regparse != ']')
++ FAIL("unmatched []");
++ g->regparse++;
++ *flagp |= HASWIDTH|SIMPLE;
++ }
++ break;
++ case '(':
++ ret = reg(g, 1, &flags);
++ if (ret == NULL)
++ return(NULL);
++ *flagp |= flags&(HASWIDTH|SPSTART);
++ break;
++ case '\0':
++ case '|':
++ case ')':
++ FAIL("internal urp"); /* Supposed to be caught earlier. */
++ break;
++ case '?':
++ case '+':
++ case '*':
++ FAIL("?+* follows nothing");
++ break;
++ case '\\':
++ if (*g->regparse == '\0')
++ FAIL("trailing \\");
++ ret = regnode(g, EXACTLY);
++ regc(g, *g->regparse++);
++ regc(g, '\0');
++ *flagp |= HASWIDTH|SIMPLE;
++ break;
++ default: {
++ register int len;
++ register char ender;
++
++ g->regparse--;
++ len = my_strcspn((const char *)g->regparse, (const char *)META);
++ if (len <= 0)
++ FAIL("internal disaster");
++ ender = *(g->regparse+len);
++ if (len > 1 && ISMULT(ender))
++ len--; /* Back off clear of ?+* operand. */
++ *flagp |= HASWIDTH;
++ if (len == 1)
++ *flagp |= SIMPLE;
++ ret = regnode(g, EXACTLY);
++ while (len > 0) {
++ regc(g, *g->regparse++);
++ len--;
++ }
++ regc(g, '\0');
++ }
++ break;
++ }
++
++ return(ret);
++}
++
++/*
++ - regnode - emit a node
++ */
++static char * /* Location. */
++regnode(struct match_globals *g, char op)
++{
++ register char *ret;
++ register char *ptr;
++
++ ret = g->regcode;
++ if (ret == &g->regdummy) {
++ g->regsize += 3;
++ return(ret);
++ }
++
++ ptr = ret;
++ *ptr++ = op;
++ *ptr++ = '\0'; /* Null "next" pointer. */
++ *ptr++ = '\0';
++ g->regcode = ptr;
++
++ return(ret);
++}
++
++/*
++ - regc - emit (if appropriate) a byte of code
++ */
++static void
++regc(struct match_globals *g, char b)
++{
++ if (g->regcode != &g->regdummy)
++ *g->regcode++ = b;
++ else
++ g->regsize++;
++}
++
++/*
++ - reginsert - insert an operator in front of already-emitted operand
++ *
++ * Means relocating the operand.
++ */
++static void
++reginsert(struct match_globals *g, char op, char* opnd)
++{
++ register char *src;
++ register char *dst;
++ register char *place;
++
++ if (g->regcode == &g->regdummy) {
++ g->regsize += 3;
++ return;
++ }
++
++ src = g->regcode;
++ g->regcode += 3;
++ dst = g->regcode;
++ while (src > opnd)
++ *--dst = *--src;
++
++ place = opnd; /* Op node, where operand used to be. */
++ *place++ = op;
++ *place++ = '\0';
++ *place++ = '\0';
++}
++
++/*
++ - regtail - set the next-pointer at the end of a node chain
++ */
++static void
++regtail(struct match_globals *g, char *p, char *val)
++{
++ register char *scan;
++ register char *temp;
++ register int offset;
++
++ if (p == &g->regdummy)
++ return;
++
++ /* Find last node. */
++ scan = p;
++ for (;;) {
++ temp = regnext(g, scan);
++ if (temp == NULL)
++ break;
++ scan = temp;
++ }
++
++ if (OP(scan) == BACK)
++ offset = scan - val;
++ else
++ offset = val - scan;
++ *(scan+1) = (offset>>8)&0377;
++ *(scan+2) = offset&0377;
++}
++
++/*
++ - regoptail - regtail on operand of first argument; nop if operandless
++ */
++static void
++regoptail(struct match_globals *g, char *p, char *val)
++{
++ /* "Operandless" and "op != BRANCH" are synonymous in practice. */
++ if (p == NULL || p == &g->regdummy || OP(p) != BRANCH)
++ return;
++ regtail(g, OPERAND(p), val);
++}
++
++/*
++ * regexec and friends
++ */
++
++
++/*
++ * Forwards.
++ */
++STATIC int regtry(struct match_globals *g, regexp *prog, char *string);
++STATIC int regmatch(struct match_globals *g, char *prog);
++STATIC int regrepeat(struct match_globals *g, char *p);
++
++#ifdef DEBUG
++int regnarrate = 0;
++void regdump();
++STATIC char *regprop(char *op);
++#endif
++
++/*
++ - regexec - match a regexp against a string
++ */
++int
++regexec(regexp *prog, char *string)
++{
++ register char *s;
++ struct match_globals g;
++
++ /* Be paranoid... */
++ if (prog == NULL || string == NULL) {
++ printk("<3>Regexp: NULL parameter\n");
++ return(0);
++ }
++
++ /* Check validity of program. */
++ if (UCHARAT(prog->program) != MAGIC) {
++ printk("<3>Regexp: corrupted program\n");
++ return(0);
++ }
++
++ /* If there is a "must appear" string, look for it. */
++ if (prog->regmust != NULL) {
++ s = string;
++ while ((s = strchr(s, prog->regmust[0])) != NULL) {
++ if (strncmp(s, prog->regmust, prog->regmlen) == 0)
++ break; /* Found it. */
++ s++;
++ }
++ if (s == NULL) /* Not present. */
++ return(0);
++ }
++
++ /* Mark beginning of line for ^ . */
++ g.regbol = string;
++
++ /* Simplest case: anchored match need be tried only once. */
++ if (prog->reganch)
++ return(regtry(&g, prog, string));
++
++ /* Messy cases: unanchored match. */
++ s = string;
++ if (prog->regstart != '\0')
++ /* We know what char it must start with. */
++ while ((s = strchr(s, prog->regstart)) != NULL) {
++ if (regtry(&g, prog, s))
++ return(1);
++ s++;
++ }
++ else
++ /* We don't -- general case. */
++ do {
++ if (regtry(&g, prog, s))
++ return(1);
++ } while (*s++ != '\0');
++
++ /* Failure. */
++ return(0);
++}
++
++/*
++ - regtry - try match at specific point
++ */
++static int /* 0 failure, 1 success */
++regtry(struct match_globals *g, regexp *prog, char *string)
++{
++ register int i;
++ register char **sp;
++ register char **ep;
++
++ g->reginput = string;
++ g->regstartp = prog->startp;
++ g->regendp = prog->endp;
++
++ sp = prog->startp;
++ ep = prog->endp;
++ for (i = NSUBEXP; i > 0; i--) {
++ *sp++ = NULL;
++ *ep++ = NULL;
++ }
++ if (regmatch(g, prog->program + 1)) {
++ prog->startp[0] = string;
++ prog->endp[0] = g->reginput;
++ return(1);
++ } else
++ return(0);
++}
++
++/*
++ - regmatch - main matching routine
++ *
++ * Conceptually the strategy is simple: check to see whether the current
++ * node matches, call self recursively to see whether the rest matches,
++ * and then act accordingly. In practice we make some effort to avoid
++ * recursion, in particular by going through "ordinary" nodes (that don't
++ * need to know whether the rest of the match failed) by a loop instead of
++ * by recursion.
++ */
++static int /* 0 failure, 1 success */
++regmatch(struct match_globals *g, char *prog)
++{
++ register char *scan = prog; /* Current node. */
++ char *next; /* Next node. */
++
++#ifdef DEBUG
++ if (scan != NULL && regnarrate)
++ fprintf(stderr, "%s(\n", regprop(scan));
++#endif
++ while (scan != NULL) {
++#ifdef DEBUG
++ if (regnarrate)
++ fprintf(stderr, "%s...\n", regprop(scan));
++#endif
++ next = regnext(g, scan);
++
++ switch (OP(scan)) {
++ case BOL:
++ if (g->reginput != g->regbol)
++ return(0);
++ break;
++ case EOL:
++ if (*g->reginput != '\0')
++ return(0);
++ break;
++ case ANY:
++ if (*g->reginput == '\0')
++ return(0);
++ g->reginput++;
++ break;
++ case EXACTLY: {
++ register int len;
++ register char *opnd;
++
++ opnd = OPERAND(scan);
++ /* Inline the first character, for speed. */
++ if (*opnd != *g->reginput)
++ return(0);
++ len = strlen(opnd);
++ if (len > 1 && strncmp(opnd, g->reginput, len) != 0)
++ return(0);
++ g->reginput += len;
++ }
++ break;
++ case ANYOF:
++ if (*g->reginput == '\0' || strchr(OPERAND(scan), *g->reginput) == NULL)
++ return(0);
++ g->reginput++;
++ break;
++ case ANYBUT:
++ if (*g->reginput == '\0' || strchr(OPERAND(scan), *g->reginput) != NULL)
++ return(0);
++ g->reginput++;
++ break;
++ case NOTHING:
++ case BACK:
++ break;
++ case OPEN+1:
++ case OPEN+2:
++ case OPEN+3:
++ case OPEN+4:
++ case OPEN+5:
++ case OPEN+6:
++ case OPEN+7:
++ case OPEN+8:
++ case OPEN+9: {
++ register int no;
++ register char *save;
++
++ no = OP(scan) - OPEN;
++ save = g->reginput;
++
++ if (regmatch(g, next)) {
++ /*
++ * Don't set startp if some later
++ * invocation of the same parentheses
++ * already has.
++ */
++ if (g->regstartp[no] == NULL)
++ g->regstartp[no] = save;
++ return(1);
++ } else
++ return(0);
++ }
++ break;
++ case CLOSE+1:
++ case CLOSE+2:
++ case CLOSE+3:
++ case CLOSE+4:
++ case CLOSE+5:
++ case CLOSE+6:
++ case CLOSE+7:
++ case CLOSE+8:
++ case CLOSE+9:
++ {
++ register int no;
++ register char *save;
++
++ no = OP(scan) - CLOSE;
++ save = g->reginput;
++
++ if (regmatch(g, next)) {
++ /*
++ * Don't set endp if some later
++ * invocation of the same parentheses
++ * already has.
++ */
++ if (g->regendp[no] == NULL)
++ g->regendp[no] = save;
++ return(1);
++ } else
++ return(0);
++ }
++ break;
++ case BRANCH: {
++ register char *save;
++
++ if (OP(next) != BRANCH) /* No choice. */
++ next = OPERAND(scan); /* Avoid recursion. */
++ else {
++ do {
++ save = g->reginput;
++ if (regmatch(g, OPERAND(scan)))
++ return(1);
++ g->reginput = save;
++ scan = regnext(g, scan);
++ } while (scan != NULL && OP(scan) == BRANCH);
++ return(0);
++ /* NOTREACHED */
++ }
++ }
++ break;
++ case STAR:
++ case PLUS: {
++ register char nextch;
++ register int no;
++ register char *save;
++ register int min;
++
++ /*
++ * Lookahead to avoid useless match attempts
++ * when we know what character comes next.
++ */
++ nextch = '\0';
++ if (OP(next) == EXACTLY)
++ nextch = *OPERAND(next);
++ min = (OP(scan) == STAR) ? 0 : 1;
++ save = g->reginput;
++ no = regrepeat(g, OPERAND(scan));
++ while (no >= min) {
++ /* If it could work, try it. */
++ if (nextch == '\0' || *g->reginput == nextch)
++ if (regmatch(g, next))
++ return(1);
++ /* Couldn't or didn't -- back up. */
++ no--;
++ g->reginput = save + no;
++ }
++ return(0);
++ }
++ break;
++ case END:
++ return(1); /* Success! */
++ break;
++ default:
++ printk("<3>Regexp: memory corruption\n");
++ return(0);
++ break;
++ }
++
++ scan = next;
++ }
++
++ /*
++ * We get here only if there's trouble -- normally "case END" is
++ * the terminating point.
++ */
++ printk("<3>Regexp: corrupted pointers\n");
++ return(0);
++}
++
++/*
++ - regrepeat - repeatedly match something simple, report how many
++ */
++static int
++regrepeat(struct match_globals *g, char *p)
++{
++ register int count = 0;
++ register char *scan;
++ register char *opnd;
++
++ scan = g->reginput;
++ opnd = OPERAND(p);
++ switch (OP(p)) {
++ case ANY:
++ count = strlen(scan);
++ scan += count;
++ break;
++ case EXACTLY:
++ while (*opnd == *scan) {
++ count++;
++ scan++;
++ }
++ break;
++ case ANYOF:
++ while (*scan != '\0' && strchr(opnd, *scan) != NULL) {
++ count++;
++ scan++;
++ }
++ break;
++ case ANYBUT:
++ while (*scan != '\0' && strchr(opnd, *scan) == NULL) {
++ count++;
++ scan++;
++ }
++ break;
++ default: /* Oh dear. Called inappropriately. */
++ printk("<3>Regexp: internal foulup\n");
++ count = 0; /* Best compromise. */
++ break;
++ }
++ g->reginput = scan;
++
++ return(count);
++}
++
++/*
++ - regnext - dig the "next" pointer out of a node
++ */
++static char*
++regnext(struct match_globals *g, char *p)
++{
++ register int offset;
++
++ if (p == &g->regdummy)
++ return(NULL);
++
++ offset = NEXT(p);
++ if (offset == 0)
++ return(NULL);
++
++ if (OP(p) == BACK)
++ return(p-offset);
++ else
++ return(p+offset);
++}
++
++#ifdef DEBUG
++
++STATIC char *regprop();
++
++/*
++ - regdump - dump a regexp onto stdout in vaguely comprehensible form
++ */
++void
++regdump(regexp *r)
++{
++ register char *s;
++ register char op = EXACTLY; /* Arbitrary non-END op. */
++ register char *next;
++ /* extern char *strchr(); */
++
++
++ s = r->program + 1;
++ while (op != END) { /* While that wasn't END last time... */
++ op = OP(s);
++ printf("%2d%s", s-r->program, regprop(s)); /* Where, what. */
++ next = regnext(s);
++ if (next == NULL) /* Next ptr. */
++ printf("(0)");
++ else
++ printf("(%d)", (s-r->program)+(next-s));
++ s += 3;
++ if (op == ANYOF || op == ANYBUT || op == EXACTLY) {
++ /* Literal string, where present. */
++ while (*s != '\0') {
++ putchar(*s);
++ s++;
++ }
++ s++;
++ }
++ putchar('\n');
++ }
++
++ /* Header fields of interest. */
++ if (r->regstart != '\0')
++ printf("start `%c' ", r->regstart);
++ if (r->reganch)
++ printf("anchored ");
++ if (r->regmust != NULL)
++ printf("must have \"%s\"", r->regmust);
++ printf("\n");
++}
++
++/*
++ - regprop - printable representation of opcode
++ */
++static char *
++regprop(char *op)
++{
++#define BUFLEN 50
++ register char *p;
++ static char buf[BUFLEN];
++
++ strcpy(buf, ":");
++
++ switch (OP(op)) {
++ case BOL:
++ p = "BOL";
++ break;
++ case EOL:
++ p = "EOL";
++ break;
++ case ANY:
++ p = "ANY";
++ break;
++ case ANYOF:
++ p = "ANYOF";
++ break;
++ case ANYBUT:
++ p = "ANYBUT";
++ break;
++ case BRANCH:
++ p = "BRANCH";
++ break;
++ case EXACTLY:
++ p = "EXACTLY";
++ break;
++ case NOTHING:
++ p = "NOTHING";
++ break;
++ case BACK:
++ p = "BACK";
++ break;
++ case END:
++ p = "END";
++ break;
++ case OPEN+1:
++ case OPEN+2:
++ case OPEN+3:
++ case OPEN+4:
++ case OPEN+5:
++ case OPEN+6:
++ case OPEN+7:
++ case OPEN+8:
++ case OPEN+9:
++ snprintf(buf+strlen(buf),BUFLEN-strlen(buf), "OPEN%d", OP(op)-OPEN);
++ p = NULL;
++ break;
++ case CLOSE+1:
++ case CLOSE+2:
++ case CLOSE+3:
++ case CLOSE+4:
++ case CLOSE+5:
++ case CLOSE+6:
++ case CLOSE+7:
++ case CLOSE+8:
++ case CLOSE+9:
++ snprintf(buf+strlen(buf),BUFLEN-strlen(buf), "CLOSE%d", OP(op)-CLOSE);
++ p = NULL;
++ break;
++ case STAR:
++ p = "STAR";
++ break;
++ case PLUS:
++ p = "PLUS";
++ break;
++ default:
++ printk("<3>Regexp: corrupted opcode\n");
++ break;
++ }
++ if (p != NULL)
++ strncat(buf, p, BUFLEN-strlen(buf));
++ return(buf);
++}
++#endif
++
++
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/regexp/regexp.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/regexp/regexp.h 2007-09-21 16:23:59.000000000 +0800
+@@ -0,0 +1,41 @@
++/*
++ * Definitions etc. for regexp(3) routines.
++ *
++ * Caveat: this is V8 regexp(3) [actually, a reimplementation thereof],
++ * not the System V one.
++ */
++
++#ifndef REGEXP_H
++#define REGEXP_H
++
++
++/*
++http://www.opensource.apple.com/darwinsource/10.3/expect-1/expect/expect.h ,
++which contains a version of this library, says:
++
++ *
++ * NSUBEXP must be at least 10, and no greater than 117 or the parser
++ * will not work properly.
++ *
++
++However, it looks rather like this library is limited to 10. If you think
++otherwise, let us know.
++*/
++
++#define NSUBEXP 10
++typedef struct regexp {
++ char *startp[NSUBEXP];
++ char *endp[NSUBEXP];
++ char regstart; /* Internal use only. */
++ char reganch; /* Internal use only. */
++ char *regmust; /* Internal use only. */
++ int regmlen; /* Internal use only. */
++ char program[1]; /* Unwarranted chumminess with compiler. */
++} regexp;
++
++regexp * regcomp(char *exp, int *patternsize);
++int regexec(regexp *prog, char *string);
++void regsub(regexp *prog, char *source, char *dest);
++void regerror(char *s);
++
++#endif
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/regexp/regmagic.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/regexp/regmagic.h 2007-09-21 16:23:59.000000000 +0800
+@@ -0,0 +1,5 @@
++/*
++ * The first byte of the regexp internal "program" is actually this magic
++ * number; the start node begins in the second byte.
++ */
++#define MAGIC 0234
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/regexp/regsub.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/regexp/regsub.c 2007-09-21 16:23:59.000000000 +0800
+@@ -0,0 +1,95 @@
++/*
++ * regsub
++ * @(#)regsub.c 1.3 of 2 April 86
++ *
++ * Copyright (c) 1986 by University of Toronto.
++ * Written by Henry Spencer. Not derived from licensed software.
++ *
++ * Permission is granted to anyone to use this software for any
++ * purpose on any computer system, and to redistribute it freely,
++ * subject to the following restrictions:
++ *
++ * 1. The author is not responsible for the consequences of use of
++ * this software, no matter how awful, even if they arise
++ * from defects in it.
++ *
++ * 2. The origin of this software must not be misrepresented, either
++ * by explicit claim or by omission.
++ *
++ * 3. Altered versions must be plainly marked as such, and must not
++ * be misrepresented as being the original software.
++ *
++ *
++ * This code was modified by Ethan Sommer to work within the kernel
++ * (it now uses kmalloc etc..)
++ *
++ */
++#include "regexp.h"
++#include "regmagic.h"
++#include <linux/string.h>
++
++
++#ifndef CHARBITS
++#define UCHARAT(p) ((int)*(unsigned char *)(p))
++#else
++#define UCHARAT(p) ((int)*(p)&CHARBITS)
++#endif
++
++#if 0
++//void regerror(char * s)
++//{
++// printk("regexp(3): %s", s);
++// /* NOTREACHED */
++//}
++#endif
++
++/*
++ - regsub - perform substitutions after a regexp match
++ */
++void
++regsub(regexp * prog, char * source, char * dest)
++{
++ register char *src;
++ register char *dst;
++ register char c;
++ register int no;
++ register int len;
++
++ /* Not necessary and gcc doesn't like it -MLS */
++ /*extern char *strncpy();*/
++
++ if (prog == NULL || source == NULL || dest == NULL) {
++ regerror("NULL parm to regsub");
++ return;
++ }
++ if (UCHARAT(prog->program) != MAGIC) {
++ regerror("damaged regexp fed to regsub");
++ return;
++ }
++
++ src = source;
++ dst = dest;
++ while ((c = *src++) != '\0') {
++ if (c == '&')
++ no = 0;
++ else if (c == '\\' && '0' <= *src && *src <= '9')
++ no = *src++ - '0';
++ else
++ no = -1;
++
++ if (no < 0) { /* Ordinary character. */
++ if (c == '\\' && (*src == '\\' || *src == '&'))
++ c = *src++;
++ *dst++ = c;
++ } else if (prog->startp[no] != NULL && prog->endp[no] != NULL) {
++ len = prog->endp[no] - prog->startp[no];
++ (void) strncpy(dst, prog->startp[no], len);
++ dst += len;
++ if (len != 0 && *(dst-1) == '\0') { /* strncpy hit NUL. */
++ regerror("damaged match string");
++ return;
++ }
++ }
++ }
++ *dst++ = '\0';
++}
+Index: linux-2.6.23-rc6/include/net/netfilter/nf_conntrack.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/net/netfilter/nf_conntrack.h 2007-09-21 16:23:54.000000000 +0800
++++ linux-2.6.23-rc6/include/net/netfilter/nf_conntrack.h 2007-09-21 16:23:59.000000000 +0800
+@@ -127,6 +127,21 @@
+ u_int32_t secmark;
+ #endif
+
++#if defined(CONFIG_IP_NF_MATCH_LAYER7) || defined(CONFIG_IP_NF_MATCH_LAYER7_MODULE)
++ struct {
++ /*
++ * e.g. "http". NULL before decision. "unknown" after decision
++ * if no match.
++ */
++ char *app_proto;
++ /*
++ * application layer data so far. NULL after match decision.
++ */
++ char *app_data;
++ unsigned int app_data_len;
++ } layer7;
++#endif
++
+ /* Storage reserved for other modules: */
+ union nf_conntrack_proto proto;
+
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_layer7.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/netfilter_ipv4/ipt_layer7.h 2007-09-21 16:23:59.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_layer7.h 2007-09-21 16:24:00.000000000 +0800
+@@ -21,6 +21,7 @@
+ char protocol[MAX_PROTOCOL_LEN];
+ char invert:1;
+ char pattern[MAX_PATTERN_LEN];
++ char pkt;
+ };
+
+ #endif /* _IPT_LAYER7_H */
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/ipt_layer7.c 2007-09-21 16:23:59.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ipt_layer7.c 2007-09-21 16:24:00.000000000 +0800
+@@ -300,33 +300,34 @@
+ }
+
+ /* add the new app data to the conntrack. Return number of bytes added. */
+-static int add_data(struct nf_conn * master_conntrack,
+- char * app_data, int appdatalen)
++static int add_datastr(char *target, int offset, char *app_data, int len)
+ {
+ int length = 0, i;
+- int oldlength = master_conntrack->layer7.app_data_len;
+-
+- // This is a fix for a race condition by Deti Fliegl. However, I'm not
+- // clear on whether the race condition exists or whether this really
+- // fixes it. I might just be being dense... Anyway, if it's not really
+- // a fix, all it does is waste a very small amount of time.
+- if(!master_conntrack->layer7.app_data) return 0;
++ if(!target) return 0;
+
+ /* Strip nulls. Make everything lower case (our regex lib doesn't
+ do case insensitivity). Add it to the end of the current data. */
+- for(i = 0; i < maxdatalen-oldlength-1 &&
+- i < appdatalen; i++) {
++ for(i = 0; i < maxdatalen-offset-1 && i < len; i++) {
+ if(app_data[i] != '\0') {
+- master_conntrack->layer7.app_data[length+oldlength] =
++ target[length+offset] =
+ /* the kernel version of tolower mungs 'upper ascii' */
+ isascii(app_data[i])? tolower(app_data[i]) : app_data[i];
+ length++;
+ }
+ }
++ target[length+offset] = '\0';
++
++ return length;
++}
+
+- master_conntrack->layer7.app_data[length+oldlength] = '\0';
+- master_conntrack->layer7.app_data_len = length + oldlength;
++/* add the new app data to the conntrack. Return number of bytes added. */
++static int add_data(struct nf_conn * master_conntrack,
++ char * app_data, int appdatalen)
++{
++ int length;
+
++ length = add_datastr(master_conntrack->layer7.app_data, master_conntrack->layer7.app_data_len, app_data, appdatalen);
++ master_conntrack->layer7.app_data_len += length;
+ return length;
+ }
+
+@@ -343,7 +344,7 @@
+ enum ip_conntrack_info master_ctinfo, ctinfo;
+ struct nf_conn *master_conntrack;
+ struct nf_conn *conntrack;
+- unsigned char * app_data;
++ unsigned char *app_data, *tmp_data;
+ unsigned int pattern_result, appdatalen;
+ regexp * comppattern;
+
+@@ -365,8 +366,8 @@
+ master_conntrack = master_ct(master_conntrack);
+
+ /* if we've classified it or seen too many packets */
+- if(TOTAL_PACKETS > num_packets ||
+- master_conntrack->layer7.app_proto) {
++ if(!info->pkt && (TOTAL_PACKETS > num_packets ||
++ master_conntrack->layer7.app_proto)) {
+
+ pattern_result = match_no_append(conntrack, master_conntrack, ctinfo, master_ctinfo, info);
+
+@@ -396,6 +397,23 @@
+ comppattern = compile_and_cache(info->pattern, info->protocol);
+ spin_unlock_bh(&list_lock);
+
++ if (info->pkt) {
++ tmp_data = kmalloc(maxdatalen, GFP_ATOMIC);
++ if(!tmp_data){
++ if (net_ratelimit())
++ printk(KERN_ERR "layer7: out of memory in match, bailing.\n");
++ return info->invert;
++ }
++
++ tmp_data[0] = '\0';
++ add_datastr(tmp_data, 0, app_data, appdatalen);
++ pattern_result = ((comppattern && regexec(comppattern, tmp_data)) ? 1 : 0);
++ kfree(tmp_data);
++ tmp_data = NULL;
++
++ return (pattern_result ^ info->invert);
++ }
++
+ /* On the first packet of a connection, allocate space for app data */
+ write_lock(&ct_lock);
+ if(TOTAL_PACKETS == 1 && !skb->cb[0] && !master_conntrack->layer7.app_data) {
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_ipp2p.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_ipp2p.h 2007-09-21 16:24:00.000000000 +0800
+@@ -0,0 +1,31 @@
++#ifndef __IPT_IPP2P_H
++#define __IPT_IPP2P_H
++#define IPP2P_VERSION "0.8.1_rc1"
++
++struct ipt_p2p_info {
++ int cmd;
++ int debug;
++};
++
++#endif //__IPT_IPP2P_H
++
++#define SHORT_HAND_IPP2P 1 /* --ipp2p switch*/
++//#define SHORT_HAND_DATA 4 /* --ipp2p-data switch*/
++#define SHORT_HAND_NONE 5 /* no short hand*/
++
++#define IPP2P_EDK (1 << 1)
++#define IPP2P_DATA_KAZAA (1 << 2)
++#define IPP2P_DATA_EDK (1 << 3)
++#define IPP2P_DATA_DC (1 << 4)
++#define IPP2P_DC (1 << 5)
++#define IPP2P_DATA_GNU (1 << 6)
++#define IPP2P_GNU (1 << 7)
++#define IPP2P_KAZAA (1 << 8)
++#define IPP2P_BIT (1 << 9)
++#define IPP2P_APPLE (1 << 10)
++#define IPP2P_SOUL (1 << 11)
++#define IPP2P_WINMX (1 << 12)
++#define IPP2P_ARES (1 << 13)
++#define IPP2P_MUTE (1 << 14)
++#define IPP2P_WASTE (1 << 15)
++#define IPP2P_XDCC (1 << 16)
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_ipp2p.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ipt_ipp2p.c 2007-09-21 16:24:00.000000000 +0800
+@@ -0,0 +1,856 @@
++#if defined(MODVERSIONS)
++#include <linux/modversions.h>
++#endif
++#include <linux/module.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/version.h>
++#include <linux/netfilter_ipv4/ipt_ipp2p.h>
++#include <net/tcp.h>
++#include <net/udp.h>
++
++#define get_u8(X,O) (*(__u8 *)(X + O))
++#define get_u16(X,O) (*(__u16 *)(X + O))
++#define get_u32(X,O) (*(__u32 *)(X + O))
++
++MODULE_AUTHOR("Eicke Friedrich/Klaus Degner <ipp2p@ipp2p.org>");
++MODULE_DESCRIPTION("An extension to iptables to identify P2P traffic.");
++MODULE_LICENSE("GPL");
++
++
++/*Search for UDP eDonkey/eMule/Kad commands*/
++int
++udp_search_edk (unsigned char *haystack, int packet_len)
++{
++ unsigned char *t = haystack;
++ t += 8;
++
++ switch (t[0]) {
++ case 0xe3:
++ { /*edonkey*/
++ switch (t[1])
++ {
++ /* client -> server status request */
++ case 0x96:
++ if (packet_len == 14) return ((IPP2P_EDK * 100) + 50);
++ break;
++ /* server -> client status request */
++ case 0x97: if (packet_len == 42) return ((IPP2P_EDK * 100) + 51);
++ break;
++ /* server description request */
++ /* e3 2a ff f0 .. | size == 6 */
++ case 0xa2: if ( (packet_len == 14) && ( get_u16(t,2) == __constant_htons(0xfff0) ) ) return ((IPP2P_EDK * 100) + 52);
++ break;
++ /* server description response */
++ /* e3 a3 ff f0 .. | size > 40 && size < 200 */
++ //case 0xa3: return ((IPP2P_EDK * 100) + 53);
++ // break;
++ case 0x9a: if (packet_len==26) return ((IPP2P_EDK * 100) + 54);
++ break;
++
++ case 0x92: if (packet_len==18) return ((IPP2P_EDK * 100) + 55);
++ break;
++ }
++ break;
++ }
++ case 0xe4:
++ {
++ switch (t[1])
++ {
++ /* e4 20 .. | size == 43 */
++ case 0x20: if ((packet_len == 43) && (t[2] != 0x00) && (t[34] != 0x00)) return ((IPP2P_EDK * 100) + 60);
++ break;
++ /* e4 00 .. 00 | size == 35 ? */
++ case 0x00: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 61);
++ break;
++ /* e4 10 .. 00 | size == 35 ? */
++ case 0x10: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 62);
++ break;
++ /* e4 18 .. 00 | size == 35 ? */
++ case 0x18: if ((packet_len == 35) && (t[26] == 0x00)) return ((IPP2P_EDK * 100) + 63);
++ break;
++ /* e4 52 .. | size = 44 */
++ case 0x52: if (packet_len == 44 ) return ((IPP2P_EDK * 100) + 64);
++ break;
++ /* e4 58 .. | size == 6 */
++ case 0x58: if (packet_len == 14 ) return ((IPP2P_EDK * 100) + 65);
++ break;
++ /* e4 59 .. | size == 2 */
++ case 0x59: if (packet_len == 10 )return ((IPP2P_EDK * 100) + 66);
++ break;
++ /* e4 28 .. | packet_len == 52,77,102,127... */
++ case 0x28: if (((packet_len-52) % 25) == 0) return ((IPP2P_EDK * 100) + 67);
++ break;
++ /* e4 50 xx xx | size == 4 */
++ case 0x50: if (packet_len == 12) return ((IPP2P_EDK * 100) + 68);
++ break;
++ /* e4 40 xx xx | size == 48 */
++ case 0x40: if (packet_len == 56) return ((IPP2P_EDK * 100) + 69);
++ break;
++ }
++ break;
++ }
++ } /* end of switch (t[0]) */
++ return 0;
++}/*udp_search_edk*/
++
++
++/*Search for UDP Gnutella commands*/
++int
++udp_search_gnu (unsigned char *haystack, int packet_len)
++{
++ unsigned char *t = haystack;
++ t += 8;
++
++ if (memcmp(t, "GND", 3) == 0) return ((IPP2P_GNU * 100) + 51);
++ if (memcmp(t, "GNUTELLA ", 9) == 0) return ((IPP2P_GNU * 100) + 52);
++ return 0;
++}/*udp_search_gnu*/
++
++
++/*Search for UDP KaZaA commands*/
++int
++udp_search_kazaa (unsigned char *haystack, int packet_len)
++{
++ unsigned char *t = haystack;
++
++ if (t[packet_len-1] == 0x00){
++ t += (packet_len - 6);
++ if (memcmp(t, "KaZaA", 5) == 0) return (IPP2P_KAZAA * 100 +50);
++ }
++
++ return 0;
++}/*udp_search_kazaa*/
++
++/*Search for UDP DirectConnect commands*/
++int
++udp_search_directconnect (unsigned char *haystack, int packet_len)
++{
++ unsigned char *t = haystack;
++ if ((*(t + 8) == 0x24) && (*(t + packet_len - 1) == 0x7c)) {
++ t+=8;
++ if (memcmp(t, "SR ", 3) == 0) return ((IPP2P_DC * 100) + 60);
++ if (memcmp(t, "Ping ", 5) == 0) return ((IPP2P_DC * 100) + 61);
++ }
++ return 0;
++}/*udp_search_directconnect*/
++
++
++
++/*Search for UDP BitTorrent commands*/
++int
++udp_search_bit (unsigned char *haystack, int packet_len)
++{
++ switch(packet_len)
++ {
++ case 24:
++ /* ^ 00 00 04 17 27 10 19 80 */
++ if ((ntohl(get_u32(haystack, 8)) == 0x00000417) && (ntohl(get_u32(haystack, 12)) == 0x27101980))
++ return (IPP2P_BIT * 100 + 50);
++ break;
++ case 44:
++ if (get_u32(haystack, 16) == __constant_htonl(0x00000400) && get_u32(haystack, 36) == __constant_htonl(0x00000104))
++ return (IPP2P_BIT * 100 + 51);
++ if (get_u32(haystack, 16) == __constant_htonl(0x00000400))
++ return (IPP2P_BIT * 100 + 61);
++ break;
++ case 65:
++ if (get_u32(haystack, 16) == __constant_htonl(0x00000404) && get_u32(haystack, 36) == __constant_htonl(0x00000104))
++ return (IPP2P_BIT * 100 + 52);
++ if (get_u32(haystack, 16) == __constant_htonl(0x00000404))
++ return (IPP2P_BIT * 100 + 62);
++ break;
++ case 67:
++ if (get_u32(haystack, 16) == __constant_htonl(0x00000406) && get_u32(haystack, 36) == __constant_htonl(0x00000104))
++ return (IPP2P_BIT * 100 + 53);
++ if (get_u32(haystack, 16) == __constant_htonl(0x00000406))
++ return (IPP2P_BIT * 100 + 63);
++ break;
++ case 211:
++ if (get_u32(haystack, 8) == __constant_htonl(0x00000405))
++ return (IPP2P_BIT * 100 + 54);
++ break;
++ case 29:
++ if ((get_u32(haystack, 8) == __constant_htonl(0x00000401)))
++ return (IPP2P_BIT * 100 + 55);
++ break;
++ case 52:
++ if (get_u32(haystack,8) == __constant_htonl(0x00000827) &&
++ get_u32(haystack,12) == __constant_htonl(0x37502950))
++ return (IPP2P_BIT * 100 + 80);
++ break;
++ default:
++ /* this packet does not have a constant size */
++ if (packet_len >= 40 && get_u32(haystack, 16) == __constant_htonl(0x00000402) && get_u32(haystack, 36) == __constant_htonl(0x00000104))
++ return (IPP2P_BIT * 100 + 56);
++ break;
++ }
++
++ /* some extra-bitcomet rules:
++ * "d1:" [a|r] "d2:id20:"
++ */
++ if (packet_len > 30 && get_u8(haystack, 8) == 'd' && get_u8(haystack, 9) == '1' && get_u8(haystack, 10) == ':' )
++ {
++ if (get_u8(haystack, 11) == 'a' || get_u8(haystack, 11) == 'r')
++ {
++ if (memcmp(haystack+12,"d2:id20:",8)==0)
++ return (IPP2P_BIT * 100 + 57);
++ }
++ }
++
++#if 0
++ /* bitlord rules */
++ /* packetlen must be bigger than 40 */
++ /* first 4 bytes are zero */
++ if (packet_len > 40 && get_u32(haystack, 8) == 0x00000000)
++ {
++ /* first rule: 00 00 00 00 01 00 00 xx xx xx xx 00 00 00 00*/
++ if (get_u32(haystack, 12) == 0x00000000 &&
++ get_u32(haystack, 16) == 0x00010000 &&
++ get_u32(haystack, 24) == 0x00000000 )
++ return (IPP2P_BIT * 100 + 71);
++
++ /* 00 01 00 00 0d 00 00 xx xx xx xx 00 00 00 00*/
++ if (get_u32(haystack, 12) == 0x00000001 &&
++ get_u32(haystack, 16) == 0x000d0000 &&
++ get_u32(haystack, 24) == 0x00000000 )
++ return (IPP2P_BIT * 100 + 71);
++
++
++ }
++#endif
++
++ return 0;
++}/*udp_search_bit*/
++
++
++
++/*Search for Ares commands*/
++//#define IPP2P_DEBUG_ARES
++int
++search_ares (const unsigned char *payload, const u16 plen)
++//int search_ares (unsigned char *haystack, int packet_len, int head_len)
++{
++// const unsigned char *t = haystack + head_len;
++
++ /* all ares packets start with */
++ if (payload[1] == 0 && (plen - payload[0]) == 3)
++ {
++ switch (payload[2])
++ {
++ case 0x5a:
++ /* ares connect */
++ if ( plen == 6 && payload[5] == 0x05 ) return ((IPP2P_ARES * 100) + 1);
++ break;
++ case 0x09:
++ /* ares search, min 3 chars --> 14 bytes
++ * lets define a search can be up to 30 chars --> max 34 bytes
++ */
++ if ( plen >= 14 && plen <= 34 ) return ((IPP2P_ARES * 100) + 1);
++ break;
++#ifdef IPP2P_DEBUG_ARES
++ default:
++ printk(KERN_DEBUG "Unknown Ares command %x recognized, len: %u \n", (unsigned int) payload[2],plen);
++#endif /* IPP2P_DEBUG_ARES */
++ }
++ }
++
++#if 0
++ /* found connect packet: 03 00 5a 04 03 05 */
++ /* new version ares 1.8: 03 00 5a xx xx 05 */
++ if ((plen) == 6){ /* possible connect command*/
++ if ((payload[0] == 0x03) && (payload[1] == 0x00) && (payload[2] == 0x5a) && (payload[5] == 0x05))
++ return ((IPP2P_ARES * 100) + 1);
++ }
++ if ((plen) == 60){ /* possible download command*/
++ if ((payload[59] == 0x0a) && (payload[58] == 0x0a)){
++ if (memcmp(t, "PUSH SHA1:", 10) == 0) /* found download command */
++ return ((IPP2P_ARES * 100) + 2);
++ }
++ }
++#endif
++
++ return 0;
++} /*search_ares*/
++
++/*Search for SoulSeek commands*/
++int
++search_soul (const unsigned char *payload, const u16 plen)
++{
++//#define IPP2P_DEBUG_SOUL
++ /* match: xx xx xx xx | xx = sizeof(payload) - 4 */
++ if (get_u32(payload, 0) == (plen - 4)){
++ const __u32 m=get_u32(payload, 4);
++ /* match 00 yy yy 00, yy can be everything */
++ if ( get_u8(payload, 4) == 0x00 && get_u8(payload, 7) == 0x00 )
++ {
++#ifdef IPP2P_DEBUG_SOUL
++ printk(KERN_DEBUG "0: Soulseek command 0x%x recognized\n",get_u32(payload, 4));
++#endif /* IPP2P_DEBUG_SOUL */
++ return ((IPP2P_SOUL * 100) + 1);
++ }
++
++ /* next match: 01 yy 00 00 | yy can be everything */
++ if ( get_u8(payload, 4) == 0x01 && get_u16(payload, 6) == 0x0000 )
++ {
++#ifdef IPP2P_DEBUG_SOUL
++ printk(KERN_DEBUG "1: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
++#endif /* IPP2P_DEBUG_SOUL */
++ return ((IPP2P_SOUL * 100) + 2);
++ }
++
++ /* other soulseek commandos are: 1-5,7,9,13-18,22,23,26,28,35-37,40-46,50,51,60,62-69,91,92,1001 */
++ /* try to do this in an intelligent way */
++ /* get all small commandos */
++ switch(m)
++ {
++ case 7:
++ case 9:
++ case 22:
++ case 23:
++ case 26:
++ case 28:
++ case 50:
++ case 51:
++ case 60:
++ case 91:
++ case 92:
++ case 1001:
++#ifdef IPP2P_DEBUG_SOUL
++ printk(KERN_DEBUG "2: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
++#endif /* IPP2P_DEBUG_SOUL */
++ return ((IPP2P_SOUL * 100) + 3);
++ }
++
++ if (m > 0 && m < 6 )
++ {
++#ifdef IPP2P_DEBUG_SOUL
++ printk(KERN_DEBUG "3: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
++#endif /* IPP2P_DEBUG_SOUL */
++ return ((IPP2P_SOUL * 100) + 4);
++ }
++ if (m > 12 && m < 19 )
++ {
++#ifdef IPP2P_DEBUG_SOUL
++ printk(KERN_DEBUG "4: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
++#endif /* IPP2P_DEBUG_SOUL */
++ return ((IPP2P_SOUL * 100) + 5);
++ }
++
++ if (m > 34 && m < 38 )
++ {
++#ifdef IPP2P_DEBUG_SOUL
++ printk(KERN_DEBUG "5: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
++#endif /* IPP2P_DEBUG_SOUL */
++ return ((IPP2P_SOUL * 100) + 6);
++ }
++
++ if (m > 39 && m < 47 )
++ {
++#ifdef IPP2P_DEBUG_SOUL
++ printk(KERN_DEBUG "6: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
++#endif /* IPP2P_DEBUG_SOUL */
++ return ((IPP2P_SOUL * 100) + 7);
++ }
++
++ if (m > 61 && m < 70 )
++ {
++#ifdef IPP2P_DEBUG_SOUL
++ printk(KERN_DEBUG "7: Soulseek command 0x%x recognized\n",get_u16(payload, 4));
++#endif /* IPP2P_DEBUG_SOUL */
++ return ((IPP2P_SOUL * 100) + 8);
++ }
++
++#ifdef IPP2P_DEBUG_SOUL
++ printk(KERN_DEBUG "unknown SOULSEEK command: 0x%x, first 16 bit: 0x%x, first 8 bit: 0x%x ,soulseek ???\n",get_u32(payload, 4),get_u16(payload, 4) >> 16,get_u8(payload, 4) >> 24);
++#endif /* IPP2P_DEBUG_SOUL */
++ }
++
++ /* match 14 00 00 00 01 yy 00 00 00 STRING(YY) 01 00 00 00 00 46|50 00 00 00 00 */
++ /* without size at the beginning !!! */
++ if ( get_u32(payload, 0) == 0x14 && get_u8(payload, 4) == 0x01 )
++ {
++ __u32 y=get_u32(payload, 5);
++ /* we need 19 chars + string */
++ if ( (y + 19) <= (plen) )
++ {
++ const unsigned char *w=payload+9+y;
++ if (get_u32(w, 0) == 0x01 && ( get_u16(w, 4) == 0x4600 || get_u16(w, 4) == 0x5000) && get_u32(w, 6) == 0x00);
++#ifdef IPP2P_DEBUG_SOUL
++ printk(KERN_DEBUG "Soulssek special client command recognized\n");
++#endif /* IPP2P_DEBUG_SOUL */
++ return ((IPP2P_SOUL * 100) + 9);
++ }
++ }
++ return 0;
++}
++
++
++/*Search for WinMX commands*/
++int
++search_winmx (const unsigned char *payload, const u16 plen)
++{
++//#define IPP2P_DEBUG_WINMX
++ if (((plen) == 4) && (memcmp(payload, "SEND", 4) == 0)) return ((IPP2P_WINMX * 100) + 1);
++ if (((plen) == 3) && (memcmp(payload, "GET", 3) == 0)) return ((IPP2P_WINMX * 100) + 2);
++ //if (packet_len < (head_len + 10)) return 0;
++ if (plen < 10) return 0;
++
++ if ((memcmp(payload, "SEND", 4) == 0) || (memcmp(payload, "GET", 3) == 0)){
++ u16 c=4;
++ const u16 end=plen-2;
++ u8 count=0;
++ while (c < end)
++ {
++ if (payload[c]== 0x20 && payload[c+1] == 0x22)
++ {
++ c++;
++ count++;
++ if (count>=2) return ((IPP2P_WINMX * 100) + 3);
++ }
++ c++;
++ }
++ }
++
++ if ( plen == 149 && payload[0] == '8' )
++ {
++#ifdef IPP2P_DEBUG_WINMX
++ printk(KERN_INFO "maybe WinMX\n");
++#endif
++ if (get_u32(payload,17) == 0 && get_u32(payload,21) == 0 && get_u32(payload,25) == 0 &&
++// get_u32(payload,33) == __constant_htonl(0x71182b1a) && get_u32(payload,37) == __constant_htonl(0x05050000) &&
++// get_u32(payload,133) == __constant_htonl(0x31097edf) && get_u32(payload,145) == __constant_htonl(0xdcb8f792))
++ get_u16(payload,39) == 0 && get_u16(payload,135) == __constant_htons(0x7edf) && get_u16(payload,147) == __constant_htons(0xf792))
++
++ {
++#ifdef IPP2P_DEBUG_WINMX
++ printk(KERN_INFO "got WinMX\n");
++#endif
++ return ((IPP2P_WINMX * 100) + 4);
++ }
++ }
++ return 0;
++} /*search_winmx*/
++
++
++/*Search for appleJuice commands*/
++int
++search_apple (const unsigned char *payload, const u16 plen)
++{
++ if ( (plen > 7) && (payload[6] == 0x0d) && (payload[7] == 0x0a) && (memcmp(payload, "ajprot", 6) == 0)) return (IPP2P_APPLE * 100);
++
++ return 0;
++}
++
++
++/*Search for BitTorrent commands*/
++int
++search_bittorrent (const unsigned char *payload, const u16 plen)
++{
++ if (plen > 20)
++ {
++ /* test for match 0x13+"BitTorrent protocol" */
++ if (payload[0] == 0x13)
++ {
++ if (memcmp(payload+1, "BitTorrent protocol", 19) == 0) return (IPP2P_BIT * 100);
++ }
++
++ /* get tracker commandos, all starts with GET /
++ * then it can follow: scrape| announce
++ * and then ?hash_info=
++ */
++ if (memcmp(payload,"GET /",5) == 0)
++ {
++ /* message scrape */
++ if ( memcmp(payload+5,"scrape?info_hash=",17)==0 ) return (IPP2P_BIT * 100 + 1);
++ /* message announce */
++ if ( memcmp(payload+5,"announce?info_hash=",19)==0 ) return (IPP2P_BIT * 100 + 2);
++ }
++ }
++ else
++ {
++ /* bitcomet encryptes the first packet, so we have to detect another
++ * one later in the flow */
++ /* first try failed, too many missdetections */
++ //if ( size == 5 && get_u32(t,0) == __constant_htonl(1) && t[4] < 3) return (IPP2P_BIT * 100 + 3);
++
++ /* second try: block request packets */
++ if ( plen == 17 && get_u32(payload,0) == __constant_htonl(0x0d) && payload[4] == 0x06 && get_u32(payload,13) == __constant_htonl(0x4000) ) return (IPP2P_BIT * 100 + 3);
++ }
++
++ return 0;
++}
++
++
++
++/*check for Kazaa get command*/
++int
++search_kazaa (const unsigned char *payload, const u16 plen)
++
++{
++ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a) && memcmp(payload, "GET /.hash=", 11) == 0)
++ return (IPP2P_DATA_KAZAA * 100);
++
++ return 0;
++}
++
++
++/*check for gnutella get command*/
++int
++search_gnu (const unsigned char *payload, const u16 plen)
++{
++ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a))
++ {
++ if (memcmp(payload, "GET /get/", 9) == 0) return ((IPP2P_DATA_GNU * 100) + 1);
++ if (memcmp(payload, "GET /uri-res/", 13) == 0) return ((IPP2P_DATA_GNU * 100) + 2);
++ }
++ return 0;
++}
++
++
++/*check for gnutella get commands and other typical data*/
++int
++search_all_gnu (const unsigned char *payload, const u16 plen)
++{
++
++ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a))
++ {
++
++ if (memcmp(payload, "GNUTELLA CONNECT/", 17) == 0) return ((IPP2P_GNU * 100) + 1);
++ if (memcmp(payload, "GNUTELLA/", 9) == 0) return ((IPP2P_GNU * 100) + 2);
++
++
++ if ((memcmp(payload, "GET /get/", 9) == 0) || (memcmp(payload, "GET /uri-res/", 13) == 0))
++ {
++ u16 c=8;
++ const u16 end=plen-22;
++ while (c < end) {
++ if ( payload[c] == 0x0a && payload[c+1] == 0x0d && ((memcmp(&payload[c+2], "X-Gnutella-", 11) == 0) || (memcmp(&payload[c+2], "X-Queue:", 8) == 0)))
++ return ((IPP2P_GNU * 100) + 3);
++ c++;
++ }
++ }
++ }
++ return 0;
++}
++
++
++/*check for KaZaA download commands and other typical data*/
++int
++search_all_kazaa (const unsigned char *payload, const u16 plen)
++{
++ if ((payload[plen-2] == 0x0d) && (payload[plen-1] == 0x0a))
++ {
++
++ if (memcmp(payload, "GIVE ", 5) == 0) return ((IPP2P_KAZAA * 100) + 1);
++
++ if (memcmp(payload, "GET /", 5) == 0) {
++ u16 c = 8;
++ const u16 end=plen-22;
++ while (c < end) {
++ if ( payload[c] == 0x0a && payload[c+1] == 0x0d && ((memcmp(&payload[c+2], "X-Kazaa-Username: ", 18) == 0) || (memcmp(&payload[c+2], "User-Agent: PeerEnabler/", 24) == 0)))
++ return ((IPP2P_KAZAA * 100) + 2);
++ c++;
++ }
++ }
++ }
++ return 0;
++}
++
++/*fast check for edonkey file segment transfer command*/
++int
++search_edk (const unsigned char *payload, const u16 plen)
++{
++ if (payload[0] != 0xe3)
++ return 0;
++ else {
++ if (payload[5] == 0x47)
++ return (IPP2P_DATA_EDK * 100);
++ else
++ return 0;
++ }
++}
++
++
++
++/*intensive but slower search for some edonkey packets including size-check*/
++int
++search_all_edk (const unsigned char *payload, const u16 plen)
++{
++ if (payload[0] != 0xe3)
++ return 0;
++ else {
++ //t += head_len;
++ const u16 cmd = get_u16(payload, 1);
++ if (cmd == (plen - 5)) {
++ switch (payload[5]) {
++ case 0x01: return ((IPP2P_EDK * 100) + 1); /*Client: hello or Server:hello*/
++ case 0x4c: return ((IPP2P_EDK * 100) + 9); /*Client: Hello-Answer*/
++ }
++ }
++ return 0;
++ }
++}
++
++
++/*fast check for Direct Connect send command*/
++int
++search_dc (const unsigned char *payload, const u16 plen)
++{
++
++ if (payload[0] != 0x24 )
++ return 0;
++ else {
++ if (memcmp(&payload[1], "Send|", 5) == 0)
++ return (IPP2P_DATA_DC * 100);
++ else
++ return 0;
++ }
++
++}
++
++
++/*intensive but slower check for all direct connect packets*/
++int
++search_all_dc (const unsigned char *payload, const u16 plen)
++{
++// unsigned char *t = haystack;
++
++ if (payload[0] == 0x24 && payload[plen-1] == 0x7c)
++ {
++ const unsigned char *t=&payload[1];
++ /* Client-Hub-Protocol */
++ if (memcmp(t, "Lock ", 5) == 0) return ((IPP2P_DC * 100) + 1);
++ /* Client-Client-Protocol, some are already recognized by client-hub (like lock) */
++ if (memcmp(t, "MyNick ", 7) == 0) return ((IPP2P_DC * 100) + 38);
++ }
++ return 0;
++}
++
++/*check for mute*/
++int
++search_mute (const unsigned char *payload, const u16 plen)
++{
++ if ( plen == 209 || plen == 345 || plen == 473 || plen == 609 || plen == 1121 )
++ {
++ //printk(KERN_DEBUG "size hit: %u",size);
++ if (memcmp(payload,"PublicKey: ",11) == 0 )
++ {
++ return ((IPP2P_MUTE * 100) + 0);
++
++/* if (memcmp(t+size-14,"\x0aEndPublicKey\x0a",14) == 0)
++ {
++ printk(KERN_DEBUG "end pubic key hit: %u",size);
++
++ }*/
++ }
++ }
++ return 0;
++}
++
++
++/* check for xdcc */
++int
++search_xdcc (const unsigned char *payload, const u16 plen)
++{
++ /* search in small packets only */
++ if (plen > 20 && plen < 200 && payload[plen-1] == 0x0a && payload[plen-2] == 0x0d && memcmp(payload,"PRIVMSG ",8) == 0)
++ {
++
++ u16 x=10;
++ const u16 end=plen - 13;
++
++ /* is seems to be a irc private massage, chedck for xdcc command */
++ while (x < end)
++ {
++ if (payload[x] == ':')
++ {
++ if ( memcmp(&payload[x+1],"xdcc send #",11) == 0 )
++ return ((IPP2P_XDCC * 100) + 0);
++ }
++ x++;
++ }
++ }
++ return 0;
++}
++
++/* search for waste */
++int search_waste(const unsigned char *payload, const u16 plen)
++{
++ if ( plen >= 8 && memcmp(payload,"GET.sha1:",9) == 0)
++ return ((IPP2P_WASTE * 100) + 0);
++
++ return 0;
++}
++
++
++static struct {
++ int command;
++ __u8 short_hand; /*for fucntions included in short hands*/
++ int packet_len;
++ int (*function_name) (const unsigned char *, const u16);
++} matchlist[] = {
++ {IPP2P_EDK,SHORT_HAND_IPP2P,20, &search_all_edk},
++// {IPP2P_DATA_KAZAA,SHORT_HAND_DATA,200, &search_kazaa},
++// {IPP2P_DATA_EDK,SHORT_HAND_DATA,60, &search_edk},
++// {IPP2P_DATA_DC,SHORT_HAND_DATA,26, &search_dc},
++ {IPP2P_DC,SHORT_HAND_IPP2P,5, search_all_dc},
++// {IPP2P_DATA_GNU,SHORT_HAND_DATA,40, &search_gnu},
++ {IPP2P_GNU,SHORT_HAND_IPP2P,5, &search_all_gnu},
++ {IPP2P_KAZAA,SHORT_HAND_IPP2P,5, &search_all_kazaa},
++ {IPP2P_BIT,SHORT_HAND_IPP2P,20, &search_bittorrent},
++ {IPP2P_APPLE,SHORT_HAND_IPP2P,5, &search_apple},
++ {IPP2P_SOUL,SHORT_HAND_IPP2P,5, &search_soul},
++ {IPP2P_WINMX,SHORT_HAND_IPP2P,2, &search_winmx},
++ {IPP2P_ARES,SHORT_HAND_IPP2P,5, &search_ares},
++ {IPP2P_MUTE,SHORT_HAND_NONE,200, &search_mute},
++ {IPP2P_WASTE,SHORT_HAND_NONE,5, &search_waste},
++ {IPP2P_XDCC,SHORT_HAND_NONE,5, &search_xdcc},
++ {0,0,0,NULL}
++};
++
++
++static struct {
++ int command;
++ __u8 short_hand; /*for fucntions included in short hands*/
++ int packet_len;
++ int (*function_name) (unsigned char *, int);
++} udp_list[] = {
++ {IPP2P_KAZAA,SHORT_HAND_IPP2P,14, &udp_search_kazaa},
++ {IPP2P_BIT,SHORT_HAND_IPP2P,23, &udp_search_bit},
++ {IPP2P_GNU,SHORT_HAND_IPP2P,11, &udp_search_gnu},
++ {IPP2P_EDK,SHORT_HAND_IPP2P,9, &udp_search_edk},
++ {IPP2P_DC,SHORT_HAND_IPP2P,12, &udp_search_directconnect},
++ {0,0,0,NULL}
++};
++
++
++static bool
++match(const struct sk_buff *skb,
++ const struct net_device *in,
++ const struct net_device *out,
++ const struct xt_match *match,
++ const void *matchinfo,
++ int offset,
++ unsigned int protoff,
++ bool *hotdrop)
++{
++ const struct ipt_p2p_info *info = matchinfo;
++ unsigned char *haystack;
++ struct iphdr *ip = ip_hdr(skb);
++ int p2p_result = 0, i = 0;
++// int head_len;
++ int hlen = ntohs(ip->tot_len)-(ip->ihl*4); /*hlen = packet-data length*/
++
++ /*must not be a fragment*/
++ if (offset) {
++ if (info->debug) printk("IPP2P.match: offset found %i \n",offset);
++ return 0;
++ }
++
++ /*make sure that skb is linear*/
++ if(skb_is_nonlinear(skb)){
++ if (info->debug) printk("IPP2P.match: nonlinear skb found\n");
++ return 0;
++ }
++
++
++ haystack=(char *)ip+(ip->ihl*4); /*haystack = packet data*/
++
++ switch (ip->protocol){
++ case IPPROTO_TCP: /*what to do with a TCP packet*/
++ {
++ struct tcphdr *tcph = (void *) ip + ip->ihl * 4;
++
++ if (tcph->fin) return 0; /*if FIN bit is set bail out*/
++ if (tcph->syn) return 0; /*if SYN bit is set bail out*/
++ if (tcph->rst) return 0; /*if RST bit is set bail out*/
++
++ haystack += tcph->doff * 4; /*get TCP-Header-Size*/
++ hlen -= tcph->doff * 4;
++ while (matchlist[i].command) {
++ if ((((info->cmd & matchlist[i].command) == matchlist[i].command) ||
++ ((info->cmd & matchlist[i].short_hand) == matchlist[i].short_hand)) &&
++ (hlen > matchlist[i].packet_len)) {
++ p2p_result = matchlist[i].function_name(haystack, hlen);
++ if (p2p_result)
++ {
++ if (info->debug) printk("IPP2P.debug:TCP-match: %i from: %u.%u.%u.%u:%i to: %u.%u.%u.%u:%i Length: %i\n",
++ p2p_result, NIPQUAD(ip->saddr),ntohs(tcph->source), NIPQUAD(ip->daddr),ntohs(tcph->dest),hlen);
++ return p2p_result;
++ }
++ }
++ i++;
++ }
++ return p2p_result;
++ }
++
++ case IPPROTO_UDP: /*what to do with an UDP packet*/
++ {
++ struct udphdr *udph = (void *) ip + ip->ihl * 4;
++
++ while (udp_list[i].command){
++ if ((((info->cmd & udp_list[i].command) == udp_list[i].command) ||
++ ((info->cmd & udp_list[i].short_hand) == udp_list[i].short_hand)) &&
++ (hlen > udp_list[i].packet_len)) {
++ p2p_result = udp_list[i].function_name(haystack, hlen);
++ if (p2p_result){
++ if (info->debug) printk("IPP2P.debug:UDP-match: %i from: %u.%u.%u.%u:%i to: %u.%u.%u.%u:%i Length: %i\n",
++ p2p_result, NIPQUAD(ip->saddr),ntohs(udph->source), NIPQUAD(ip->daddr),ntohs(udph->dest),hlen);
++ return p2p_result;
++ }
++ }
++ i++;
++ }
++ return p2p_result;
++ }
++
++ default: return 0;
++ }
++}
++
++
++
++static bool
++checkentry(const char *tablename,
++ const void *ip,
++ const struct xt_match *match,
++ void *matchinfo,
++ unsigned int hook_mask)
++{
++ /* Must specify -p tcp */
++/* if (ip->proto != IPPROTO_TCP || (ip->invflags & IPT_INV_PROTO)) {
++ * printk("ipp2p: Only works on TCP packets, use -p tcp\n");
++ * return 0;
++ * }*/
++ return 1;
++}
++
++
++
++
++static struct ipt_match ipp2p_match = {
++ .name = "ipp2p",
++ .match = &match,
++ .family = AF_INET,
++ .matchsize = sizeof(struct ipt_p2p_info),
++ .checkentry = &checkentry,
++ .me = THIS_MODULE,
++};
++
++
++static int __init init(void)
++{
++ printk(KERN_INFO "IPP2P v%s loading\n", IPP2P_VERSION);
++ return xt_register_match(&ipp2p_match);
++}
++
++static void __exit fini(void)
++{
++ xt_unregister_match(&ipp2p_match);
++ printk(KERN_INFO "IPP2P v%s unloaded\n", IPP2P_VERSION);
++}
++
++module_init(init);
++module_exit(fini);
++
++
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Kconfig 2007-09-21 16:23:59.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig 2007-09-21 16:24:00.000000000 +0800
+@@ -81,6 +81,12 @@
+ help
+ Say Y to get lots of debugging output.
+
++config IP_NF_MATCH_IPP2P
++ tristate "IPP2P"
++ depends on IP_NF_IPTABLES
++ help
++ Module for matching traffic of various Peer-to-Peer applications
++
+ config IP_NF_MATCH_TOS
+ tristate "TOS match support"
+ depends on IP_NF_IPTABLES
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Makefile 2007-09-21 16:23:59.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Makefile 2007-09-21 16:24:00.000000000 +0800
+@@ -49,7 +49,7 @@
+ obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o
+ obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o
+ obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o
+-
++obj-$(CONFIG_IP_NF_MATCH_IPP2P) += ipt_ipp2p.o
+ obj-$(CONFIG_IP_NF_MATCH_LAYER7) += ipt_layer7.o
+
+ # targets
--- /dev/null
+Index: linux-2.6.23-rc7/include/net/xfrmudp.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc7/include/net/xfrmudp.h 2007-10-02 00:58:05.000000000 +0800
+@@ -0,0 +1,10 @@
++/*
++ * pointer to function for type that xfrm4_input wants, to permit
++ * decoupling of XFRM from udp.c
++ */
++#define HAVE_XFRM4_UDP_REGISTER
++
++typedef int (*xfrm4_rcv_encap_t)(struct sk_buff *skb, __u16 encap_type);
++extern int udp4_register_esp_rcvencap(xfrm4_rcv_encap_t func
++ , xfrm4_rcv_encap_t *oldfunc);
++extern int udp4_unregister_esp_rcvencap(xfrm4_rcv_encap_t func);
+Index: linux-2.6.23-rc7/net/ipv4/Kconfig
+===================================================================
+--- linux-2.6.23-rc7.orig/net/ipv4/Kconfig 2007-10-02 00:58:02.000000000 +0800
++++ linux-2.6.23-rc7/net/ipv4/Kconfig 2007-10-02 00:58:05.000000000 +0800
+@@ -224,6 +224,12 @@
+ Network), but can be distributed all over the Internet. If you want
+ to do that, say Y here and to "IP multicast routing" below.
+
++config IPSEC_NAT_TRAVERSAL
++ bool "IPSEC NAT-Traversal (KLIPS compatible)"
++ depends on INET
++ ---help---
++ Includes support for RFC3947/RFC3948 NAT-Traversal of ESP over UDP.
++
+ config IP_MROUTE
+ bool "IP: multicast routing"
+ depends on IP_MULTICAST
+Index: linux-2.6.23-rc7/net/ipv4/xfrm4_input.c
+===================================================================
+--- linux-2.6.23-rc7.orig/net/ipv4/xfrm4_input.c 2007-10-02 00:58:02.000000000 +0800
++++ linux-2.6.23-rc7/net/ipv4/xfrm4_input.c 2007-10-02 00:58:33.000000000 +0800
+@@ -15,6 +15,7 @@
+ #include <linux/netfilter_ipv4.h>
+ #include <net/ip.h>
+ #include <net/xfrm.h>
++#include <net/xfrmudp.h>
+
+ static int xfrm4_parse_spi(struct sk_buff *skb, u8 nexthdr, __be32 *spi, __be32 *seq)
+ {
+@@ -161,6 +162,29 @@
+ return 0;
+ }
+
++#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
++static xfrm4_rcv_encap_t xfrm4_rcv_encap_func = NULL;
++
++int udp4_register_esp_rcvencap(xfrm4_rcv_encap_t func,
++ xfrm4_rcv_encap_t *oldfunc)
++{
++ if(oldfunc != NULL)
++ *oldfunc = xfrm4_rcv_encap_func;
++
++ xfrm4_rcv_encap_func = func;
++ return 0;
++}
++
++int udp4_unregister_esp_rcvencap(xfrm4_rcv_encap_t func)
++{
++ if(xfrm4_rcv_encap_func != func)
++ return -1;
++
++ xfrm4_rcv_encap_func = NULL;
++ return 0;
++}
++#endif /* CONFIG_IPSEC_NAT_TRAVERSAL */
++
+ /* If it's a keepalive packet, then just eat it.
+ * If it's an encapsulated packet, then pass it to the
+ * IPsec xfrm input.
+@@ -251,7 +275,13 @@
+ iph->protocol = IPPROTO_ESP;
+
+ /* process ESP */
++#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
++ if(xfrm4_rcv_encap_func == NULL)
++ goto drop;
++ ret = (*xfrm4_rcv_encap_func)(skb, up->encap_type);
++#else
+ ret = xfrm4_rcv_encap(skb, encap_type);
++#endif
+ return ret;
+
+ drop:
+@@ -265,3 +295,8 @@
+ }
+
+ EXPORT_SYMBOL(xfrm4_rcv);
++
++#ifdef CONFIG_IPSEC_NAT_TRAVERSAL
++EXPORT_SYMBOL(udp4_register_esp_rcvencap);
++EXPORT_SYMBOL(udp4_unregister_esp_rcvencap);
++#endif
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set.h 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,498 @@
++#ifndef _IP_SET_H
++#define _IP_SET_H
++
++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
++ * Patrick Schaaf <bof@bof.de>
++ * Martin Josefsson <gandalf@wlug.westbo.se>
++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#if 0
++#define IP_SET_DEBUG
++#endif
++
++/*
++ * A sockopt of such quality has hardly ever been seen before on the open
++ * market! This little beauty, hardly ever used: above 64, so it's
++ * traditionally used for firewalling, not touched (even once!) by the
++ * 2.0, 2.2 and 2.4 kernels!
++ *
++ * Comes with its own certificate of authenticity, valid anywhere in the
++ * Free world!
++ *
++ * Rusty, 19.4.2000
++ */
++#define SO_IP_SET 83
++
++/*
++ * Heavily modify by Joakim Axelsson 08.03.2002
++ * - Made it more modulebased
++ *
++ * Additional heavy modifications by Jozsef Kadlecsik 22.02.2004
++ * - bindings added
++ * - in order to "deal with" backward compatibility, renamed to ipset
++ */
++
++/*
++ * Used so that the kernel module and ipset-binary can match their versions
++ */
++#define IP_SET_PROTOCOL_VERSION 2
++
++#define IP_SET_MAXNAMELEN 32 /* set names and set typenames */
++
++/* Lets work with our own typedef for representing an IP address.
++ * We hope to make the code more portable, possibly to IPv6...
++ *
++ * The representation works in HOST byte order, because most set types
++ * will perform arithmetic operations and compare operations.
++ *
++ * For now the type is an uint32_t.
++ *
++ * Make sure to ONLY use the functions when translating and parsing
++ * in order to keep the host byte order and make it more portable:
++ * parse_ip()
++ * parse_mask()
++ * parse_ipandmask()
++ * ip_tostring()
++ * (Joakim: where are they???)
++ */
++
++typedef uint32_t ip_set_ip_t;
++
++/* Sets are identified by an id in kernel space. Tweak with ip_set_id_t
++ * and IP_SET_INVALID_ID if you want to increase the max number of sets.
++ */
++typedef uint16_t ip_set_id_t;
++
++#define IP_SET_INVALID_ID 65535
++
++/* How deep we follow bindings */
++#define IP_SET_MAX_BINDINGS 6
++
++/*
++ * Option flags for kernel operations (ipt_set_info)
++ */
++#define IPSET_SRC 0x01 /* Source match/add */
++#define IPSET_DST 0x02 /* Destination match/add */
++#define IPSET_MATCH_INV 0x04 /* Inverse matching */
++
++/*
++ * Set features
++ */
++#define IPSET_TYPE_IP 0x01 /* IP address type of set */
++#define IPSET_TYPE_PORT 0x02 /* Port type of set */
++#define IPSET_DATA_SINGLE 0x04 /* Single data storage */
++#define IPSET_DATA_DOUBLE 0x08 /* Double data storage */
++
++/* Reserved keywords */
++#define IPSET_TOKEN_DEFAULT ":default:"
++#define IPSET_TOKEN_ALL ":all:"
++
++/* SO_IP_SET operation constants, and their request struct types.
++ *
++ * Operation ids:
++ * 0-99: commands with version checking
++ * 100-199: add/del/test/bind/unbind
++ * 200-299: list, save, restore
++ */
++
++/* Single shot operations:
++ * version, create, destroy, flush, rename and swap
++ *
++ * Sets are identified by name.
++ */
++
++#define IP_SET_REQ_STD \
++ unsigned op; \
++ unsigned version; \
++ char name[IP_SET_MAXNAMELEN]
++
++#define IP_SET_OP_CREATE 0x00000001 /* Create a new (empty) set */
++struct ip_set_req_create {
++ IP_SET_REQ_STD;
++ char typename[IP_SET_MAXNAMELEN];
++};
++
++#define IP_SET_OP_DESTROY 0x00000002 /* Remove a (empty) set */
++struct ip_set_req_std {
++ IP_SET_REQ_STD;
++};
++
++#define IP_SET_OP_FLUSH 0x00000003 /* Remove all IPs in a set */
++/* Uses ip_set_req_std */
++
++#define IP_SET_OP_RENAME 0x00000004 /* Rename a set */
++/* Uses ip_set_req_create */
++
++#define IP_SET_OP_SWAP 0x00000005 /* Swap two sets */
++/* Uses ip_set_req_create */
++
++union ip_set_name_index {
++ char name[IP_SET_MAXNAMELEN];
++ ip_set_id_t index;
++};
++
++#define IP_SET_OP_GET_BYNAME 0x00000006 /* Get set index by name */
++struct ip_set_req_get_set {
++ unsigned op;
++ unsigned version;
++ union ip_set_name_index set;
++};
++
++#define IP_SET_OP_GET_BYINDEX 0x00000007 /* Get set name by index */
++/* Uses ip_set_req_get_set */
++
++#define IP_SET_OP_VERSION 0x00000100 /* Ask kernel version */
++struct ip_set_req_version {
++ unsigned op;
++ unsigned version;
++};
++
++/* Double shots operations:
++ * add, del, test, bind and unbind.
++ *
++ * First we query the kernel to get the index and type of the target set,
++ * then issue the command. Validity of IP is checked in kernel in order
++ * to minimalize sockopt operations.
++ */
++
++/* Get minimal set data for add/del/test/bind/unbind IP */
++#define IP_SET_OP_ADT_GET 0x00000010 /* Get set and type */
++struct ip_set_req_adt_get {
++ unsigned op;
++ unsigned version;
++ union ip_set_name_index set;
++ char typename[IP_SET_MAXNAMELEN];
++};
++
++#define IP_SET_REQ_BYINDEX \
++ unsigned op; \
++ ip_set_id_t index;
++
++struct ip_set_req_adt {
++ IP_SET_REQ_BYINDEX;
++};
++
++#define IP_SET_OP_ADD_IP 0x00000101 /* Add an IP to a set */
++/* Uses ip_set_req_adt, with type specific addage */
++
++#define IP_SET_OP_DEL_IP 0x00000102 /* Remove an IP from a set */
++/* Uses ip_set_req_adt, with type specific addage */
++
++#define IP_SET_OP_TEST_IP 0x00000103 /* Test an IP in a set */
++/* Uses ip_set_req_adt, with type specific addage */
++
++#define IP_SET_OP_BIND_SET 0x00000104 /* Bind an IP to a set */
++/* Uses ip_set_req_bind, with type specific addage */
++struct ip_set_req_bind {
++ IP_SET_REQ_BYINDEX;
++ char binding[IP_SET_MAXNAMELEN];
++};
++
++#define IP_SET_OP_UNBIND_SET 0x00000105 /* Unbind an IP from a set */
++/* Uses ip_set_req_bind, with type speficic addage
++ * index = 0 means unbinding for all sets */
++
++#define IP_SET_OP_TEST_BIND_SET 0x00000106 /* Test binding an IP to a set */
++/* Uses ip_set_req_bind, with type specific addage */
++
++/* Multiple shots operations: list, save, restore.
++ *
++ * - check kernel version and query the max number of sets
++ * - get the basic information on all sets
++ * and size required for the next step
++ * - get actual set data: header, data, bindings
++ */
++
++/* Get max_sets and the index of a queried set
++ */
++#define IP_SET_OP_MAX_SETS 0x00000020
++struct ip_set_req_max_sets {
++ unsigned op;
++ unsigned version;
++ ip_set_id_t max_sets; /* max_sets */
++ ip_set_id_t sets; /* real number of sets */
++ union ip_set_name_index set; /* index of set if name used */
++};
++
++/* Get the id and name of the sets plus size for next step */
++#define IP_SET_OP_LIST_SIZE 0x00000201
++#define IP_SET_OP_SAVE_SIZE 0x00000202
++struct ip_set_req_setnames {
++ unsigned op;
++ ip_set_id_t index; /* set to list/save */
++ size_t size; /* size to get setdata/bindings */
++ /* followed by sets number of struct ip_set_name_list */
++};
++
++struct ip_set_name_list {
++ char name[IP_SET_MAXNAMELEN];
++ char typename[IP_SET_MAXNAMELEN];
++ ip_set_id_t index;
++ ip_set_id_t id;
++};
++
++/* The actual list operation */
++#define IP_SET_OP_LIST 0x00000203
++struct ip_set_req_list {
++ IP_SET_REQ_BYINDEX;
++ /* sets number of struct ip_set_list in reply */
++};
++
++struct ip_set_list {
++ ip_set_id_t index;
++ ip_set_id_t binding;
++ u_int32_t ref;
++ size_t header_size; /* Set header data of header_size */
++ size_t members_size; /* Set members data of members_size */
++ size_t bindings_size; /* Set bindings data of bindings_size */
++};
++
++struct ip_set_hash_list {
++ ip_set_ip_t ip;
++ ip_set_id_t binding;
++};
++
++/* The save operation */
++#define IP_SET_OP_SAVE 0x00000204
++/* Uses ip_set_req_list, in the reply replaced by
++ * sets number of struct ip_set_save plus a marker
++ * ip_set_save followed by ip_set_hash_save structures.
++ */
++struct ip_set_save {
++ ip_set_id_t index;
++ ip_set_id_t binding;
++ size_t header_size; /* Set header data of header_size */
++ size_t members_size; /* Set members data of members_size */
++};
++
++/* At restoring, ip == 0 means default binding for the given set: */
++struct ip_set_hash_save {
++ ip_set_ip_t ip;
++ ip_set_id_t id;
++ ip_set_id_t binding;
++};
++
++/* The restore operation */
++#define IP_SET_OP_RESTORE 0x00000205
++/* Uses ip_set_req_setnames followed by ip_set_restore structures
++ * plus a marker ip_set_restore, followed by ip_set_hash_save
++ * structures.
++ */
++struct ip_set_restore {
++ char name[IP_SET_MAXNAMELEN];
++ char typename[IP_SET_MAXNAMELEN];
++ ip_set_id_t index;
++ size_t header_size; /* Create data of header_size */
++ size_t members_size; /* Set members data of members_size */
++};
++
++static inline int bitmap_bytes(ip_set_ip_t a, ip_set_ip_t b)
++{
++ return 4 * ((((b - a + 8) / 8) + 3) / 4);
++}
++
++#ifdef __KERNEL__
++
++#define ip_set_printk(format, args...) \
++ do { \
++ printk("%s: %s: ", __FILE__, __FUNCTION__); \
++ printk(format "\n" , ## args); \
++ } while (0)
++
++#if defined(IP_SET_DEBUG)
++#define DP(format, args...) \
++ do { \
++ printk("%s: %s (DBG): ", __FILE__, __FUNCTION__);\
++ printk(format "\n" , ## args); \
++ } while (0)
++#define IP_SET_ASSERT(x) \
++ do { \
++ if (!(x)) \
++ printk("IP_SET_ASSERT: %s:%i(%s)\n", \
++ __FILE__, __LINE__, __FUNCTION__); \
++ } while (0)
++#else
++#define DP(format, args...)
++#define IP_SET_ASSERT(x)
++#endif
++
++struct ip_set;
++
++/*
++ * The ip_set_type definition - one per set type, e.g. "ipmap".
++ *
++ * Each individual set has a pointer, set->type, going to one
++ * of these structures. Function pointers inside the structure implement
++ * the real behaviour of the sets.
++ *
++ * If not mentioned differently, the implementation behind the function
++ * pointers of a set_type, is expected to return 0 if ok, and a negative
++ * errno (e.g. -EINVAL) on error.
++ */
++struct ip_set_type {
++ struct list_head list; /* next in list of set types */
++
++ /* test for IP in set (kernel: iptables -m set src|dst)
++ * return 0 if not in set, 1 if in set.
++ */
++ int (*testip_kernel) (struct ip_set *set,
++ const struct sk_buff * skb,
++ ip_set_ip_t *ip,
++ const u_int32_t *flags,
++ unsigned char index);
++
++ /* test for IP in set (userspace: ipset -T set IP)
++ * return 0 if not in set, 1 if in set.
++ */
++ int (*testip) (struct ip_set *set,
++ const void *data, size_t size,
++ ip_set_ip_t *ip);
++
++ /*
++ * Size of the data structure passed by when
++ * adding/deletin/testing an entry.
++ */
++ size_t reqsize;
++
++ /* Add IP into set (userspace: ipset -A set IP)
++ * Return -EEXIST if the address is already in the set,
++ * and -ERANGE if the address lies outside the set bounds.
++ * If the address was not already in the set, 0 is returned.
++ */
++ int (*addip) (struct ip_set *set,
++ const void *data, size_t size,
++ ip_set_ip_t *ip);
++
++ /* Add IP into set (kernel: iptables ... -j SET set src|dst)
++ * Return -EEXIST if the address is already in the set,
++ * and -ERANGE if the address lies outside the set bounds.
++ * If the address was not already in the set, 0 is returned.
++ */
++ int (*addip_kernel) (struct ip_set *set,
++ const struct sk_buff * skb,
++ ip_set_ip_t *ip,
++ const u_int32_t *flags,
++ unsigned char index);
++
++ /* remove IP from set (userspace: ipset -D set --entry x)
++ * Return -EEXIST if the address is NOT in the set,
++ * and -ERANGE if the address lies outside the set bounds.
++ * If the address really was in the set, 0 is returned.
++ */
++ int (*delip) (struct ip_set *set,
++ const void *data, size_t size,
++ ip_set_ip_t *ip);
++
++ /* remove IP from set (kernel: iptables ... -j SET --entry x)
++ * Return -EEXIST if the address is NOT in the set,
++ * and -ERANGE if the address lies outside the set bounds.
++ * If the address really was in the set, 0 is returned.
++ */
++ int (*delip_kernel) (struct ip_set *set,
++ const struct sk_buff * skb,
++ ip_set_ip_t *ip,
++ const u_int32_t *flags,
++ unsigned char index);
++
++ /* new set creation - allocated type specific items
++ */
++ int (*create) (struct ip_set *set,
++ const void *data, size_t size);
++
++ /* retry the operation after successfully tweaking the set
++ */
++ int (*retry) (struct ip_set *set);
++
++ /* set destruction - free type specific items
++ * There is no return value.
++ * Can be called only when child sets are destroyed.
++ */
++ void (*destroy) (struct ip_set *set);
++
++ /* set flushing - reset all bits in the set, or something similar.
++ * There is no return value.
++ */
++ void (*flush) (struct ip_set *set);
++
++ /* Listing: size needed for header
++ */
++ size_t header_size;
++
++ /* Listing: Get the header
++ *
++ * Fill in the information in "data".
++ * This function is always run after list_header_size() under a
++ * writelock on the set. Therefor is the length of "data" always
++ * correct.
++ */
++ void (*list_header) (const struct ip_set *set,
++ void *data);
++
++ /* Listing: Get the size for the set members
++ */
++ int (*list_members_size) (const struct ip_set *set);
++
++ /* Listing: Get the set members
++ *
++ * Fill in the information in "data".
++ * This function is always run after list_member_size() under a
++ * writelock on the set. Therefor is the length of "data" always
++ * correct.
++ */
++ void (*list_members) (const struct ip_set *set,
++ void *data);
++
++ char typename[IP_SET_MAXNAMELEN];
++ unsigned char features;
++ int protocol_version;
++
++ /* Set this to THIS_MODULE if you are a module, otherwise NULL */
++ struct module *me;
++};
++
++extern int ip_set_register_set_type(struct ip_set_type *set_type);
++extern void ip_set_unregister_set_type(struct ip_set_type *set_type);
++
++/* A generic ipset */
++struct ip_set {
++ char name[IP_SET_MAXNAMELEN]; /* the name of the set */
++ rwlock_t lock; /* lock for concurrency control */
++ ip_set_id_t id; /* set id for swapping */
++ ip_set_id_t binding; /* default binding for the set */
++ atomic_t ref; /* in kernel and in hash references */
++ struct ip_set_type *type; /* the set types */
++ void *data; /* pooltype specific data */
++};
++
++/* Structure to bind set elements to sets */
++struct ip_set_hash {
++ struct list_head list; /* list of clashing entries in hash */
++ ip_set_ip_t ip; /* ip from set */
++ ip_set_id_t id; /* set id */
++ ip_set_id_t binding; /* set we bind the element to */
++};
++
++/* register and unregister set references */
++extern ip_set_id_t ip_set_get_byname(const char name[IP_SET_MAXNAMELEN]);
++extern ip_set_id_t ip_set_get_byindex(ip_set_id_t id);
++extern void ip_set_put(ip_set_id_t id);
++
++/* API for iptables set match, and SET target */
++extern void ip_set_addip_kernel(ip_set_id_t id,
++ const struct sk_buff *skb,
++ const u_int32_t *flags);
++extern void ip_set_delip_kernel(ip_set_id_t id,
++ const struct sk_buff *skb,
++ const u_int32_t *flags);
++extern int ip_set_testip_kernel(ip_set_id_t id,
++ const struct sk_buff *skb,
++ const u_int32_t *flags);
++
++#endif /* __KERNEL__ */
++
++#endif /*_IP_SET_H*/
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_iphash.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_iphash.h 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,30 @@
++#ifndef __IP_SET_IPHASH_H
++#define __IP_SET_IPHASH_H
++
++#include <linux/netfilter_ipv4/ip_set.h>
++
++#define SETTYPE_NAME "iphash"
++#define MAX_RANGE 0x0000FFFF
++
++struct ip_set_iphash {
++ ip_set_ip_t *members; /* the iphash proper */
++ uint32_t elements; /* number of elements */
++ uint32_t hashsize; /* hash size */
++ uint16_t probes; /* max number of probes */
++ uint16_t resize; /* resize factor in percent */
++ ip_set_ip_t netmask; /* netmask */
++ void *initval[0]; /* initvals for jhash_1word */
++};
++
++struct ip_set_req_iphash_create {
++ uint32_t hashsize;
++ uint16_t probes;
++ uint16_t resize;
++ ip_set_ip_t netmask;
++};
++
++struct ip_set_req_iphash {
++ ip_set_ip_t ip;
++};
++
++#endif /* __IP_SET_IPHASH_H */
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_ipmap.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_ipmap.h 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,56 @@
++#ifndef __IP_SET_IPMAP_H
++#define __IP_SET_IPMAP_H
++
++#include <linux/netfilter_ipv4/ip_set.h>
++
++#define SETTYPE_NAME "ipmap"
++#define MAX_RANGE 0x0000FFFF
++
++struct ip_set_ipmap {
++ void *members; /* the ipmap proper */
++ ip_set_ip_t first_ip; /* host byte order, included in range */
++ ip_set_ip_t last_ip; /* host byte order, included in range */
++ ip_set_ip_t netmask; /* subnet netmask */
++ ip_set_ip_t sizeid; /* size of set in IPs */
++ ip_set_ip_t hosts; /* number of hosts in a subnet */
++};
++
++struct ip_set_req_ipmap_create {
++ ip_set_ip_t from;
++ ip_set_ip_t to;
++ ip_set_ip_t netmask;
++};
++
++struct ip_set_req_ipmap {
++ ip_set_ip_t ip;
++};
++
++unsigned int
++mask_to_bits(ip_set_ip_t mask)
++{
++ unsigned int bits = 32;
++ ip_set_ip_t maskaddr;
++
++ if (mask == 0xFFFFFFFF)
++ return bits;
++
++ maskaddr = 0xFFFFFFFE;
++ while (--bits >= 0 && maskaddr != mask)
++ maskaddr <<= 1;
++
++ return bits;
++}
++
++ip_set_ip_t
++range_to_mask(ip_set_ip_t from, ip_set_ip_t to, unsigned int *bits)
++{
++ ip_set_ip_t mask = 0xFFFFFFFE;
++
++ *bits = 32;
++ while (--(*bits) >= 0 && mask && (to & mask) != from)
++ mask <<= 1;
++
++ return mask;
++}
++
++#endif /* __IP_SET_IPMAP_H */
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_ipporthash.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_ipporthash.h 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,34 @@
++#ifndef __IP_SET_IPPORTHASH_H
++#define __IP_SET_IPPORTHASH_H
++
++#include <linux/netfilter_ipv4/ip_set.h>
++
++#define SETTYPE_NAME "ipporthash"
++#define MAX_RANGE 0x0000FFFF
++#define INVALID_PORT (MAX_RANGE + 1)
++
++struct ip_set_ipporthash {
++ ip_set_ip_t *members; /* the ipporthash proper */
++ uint32_t elements; /* number of elements */
++ uint32_t hashsize; /* hash size */
++ uint16_t probes; /* max number of probes */
++ uint16_t resize; /* resize factor in percent */
++ ip_set_ip_t first_ip; /* host byte order, included in range */
++ ip_set_ip_t last_ip; /* host byte order, included in range */
++ void *initval[0]; /* initvals for jhash_1word */
++};
++
++struct ip_set_req_ipporthash_create {
++ uint32_t hashsize;
++ uint16_t probes;
++ uint16_t resize;
++ ip_set_ip_t from;
++ ip_set_ip_t to;
++};
++
++struct ip_set_req_ipporthash {
++ ip_set_ip_t ip;
++ ip_set_ip_t port;
++};
++
++#endif /* __IP_SET_IPPORTHASH_H */
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_iptree.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_iptree.h 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,40 @@
++#ifndef __IP_SET_IPTREE_H
++#define __IP_SET_IPTREE_H
++
++#include <linux/netfilter_ipv4/ip_set.h>
++
++#define SETTYPE_NAME "iptree"
++#define MAX_RANGE 0x0000FFFF
++
++struct ip_set_iptreed {
++ unsigned long expires[256]; /* x.x.x.ADDR */
++};
++
++struct ip_set_iptreec {
++ struct ip_set_iptreed *tree[256]; /* x.x.ADDR.* */
++};
++
++struct ip_set_iptreeb {
++ struct ip_set_iptreec *tree[256]; /* x.ADDR.*.* */
++};
++
++struct ip_set_iptree {
++ unsigned int timeout;
++ unsigned int gc_interval;
++#ifdef __KERNEL__
++ uint32_t elements; /* number of elements */
++ struct timer_list gc;
++ struct ip_set_iptreeb *tree[256]; /* ADDR.*.*.* */
++#endif
++};
++
++struct ip_set_req_iptree_create {
++ unsigned int timeout;
++};
++
++struct ip_set_req_iptree {
++ ip_set_ip_t ip;
++ unsigned int timeout;
++};
++
++#endif /* __IP_SET_IPTREE_H */
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_macipmap.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_macipmap.h 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,38 @@
++#ifndef __IP_SET_MACIPMAP_H
++#define __IP_SET_MACIPMAP_H
++
++#include <linux/netfilter_ipv4/ip_set.h>
++
++#define SETTYPE_NAME "macipmap"
++#define MAX_RANGE 0x0000FFFF
++
++/* general flags */
++#define IPSET_MACIP_MATCHUNSET 1
++
++/* per ip flags */
++#define IPSET_MACIP_ISSET 1
++
++struct ip_set_macipmap {
++ void *members; /* the macipmap proper */
++ ip_set_ip_t first_ip; /* host byte order, included in range */
++ ip_set_ip_t last_ip; /* host byte order, included in range */
++ u_int32_t flags;
++};
++
++struct ip_set_req_macipmap_create {
++ ip_set_ip_t from;
++ ip_set_ip_t to;
++ u_int32_t flags;
++};
++
++struct ip_set_req_macipmap {
++ ip_set_ip_t ip;
++ unsigned char ethernet[ETH_ALEN];
++};
++
++struct ip_set_macip {
++ unsigned short flags;
++ unsigned char ethernet[ETH_ALEN];
++};
++
++#endif /* __IP_SET_MACIPMAP_H */
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_malloc.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_malloc.h 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,116 @@
++#ifndef _IP_SET_MALLOC_H
++#define _IP_SET_MALLOC_H
++
++#ifdef __KERNEL__
++
++/* Memory allocation and deallocation */
++static size_t max_malloc_size = 0;
++
++static inline void init_max_malloc_size(void)
++{
++#define CACHE(x) max_malloc_size = x;
++#include <linux/kmalloc_sizes.h>
++#undef CACHE
++}
++
++static inline void * ip_set_malloc(size_t bytes)
++{
++ if (bytes > max_malloc_size)
++ return vmalloc(bytes);
++ else
++ return kmalloc(bytes, GFP_KERNEL);
++}
++
++static inline void ip_set_free(void * data, size_t bytes)
++{
++ if (bytes > max_malloc_size)
++ vfree(data);
++ else
++ kfree(data);
++}
++
++struct harray {
++ size_t max_elements;
++ void *arrays[0];
++};
++
++static inline void *
++harray_malloc(size_t hashsize, size_t typesize, int flags)
++{
++ struct harray *harray;
++ size_t max_elements, size, i, j;
++
++ if (!max_malloc_size)
++ init_max_malloc_size();
++
++ if (typesize > max_malloc_size)
++ return NULL;
++
++ max_elements = max_malloc_size/typesize;
++ size = hashsize/max_elements;
++ if (hashsize % max_elements)
++ size++;
++
++ /* Last pointer signals end of arrays */
++ harray = kmalloc(sizeof(struct harray) + (size + 1) * sizeof(void *),
++ flags);
++
++ if (!harray)
++ return NULL;
++
++ for (i = 0; i < size - 1; i++) {
++ harray->arrays[i] = kmalloc(max_elements * typesize, flags);
++ if (!harray->arrays[i])
++ goto undo;
++ memset(harray->arrays[i], 0, max_elements * typesize);
++ }
++ harray->arrays[i] = kmalloc((hashsize - i * max_elements) * typesize,
++ flags);
++ if (!harray->arrays[i])
++ goto undo;
++ memset(harray->arrays[i], 0, (hashsize - i * max_elements) * typesize);
++
++ harray->max_elements = max_elements;
++ harray->arrays[size] = NULL;
++
++ return (void *)harray;
++
++ undo:
++ for (j = 0; j < i; j++) {
++ kfree(harray->arrays[j]);
++ }
++ kfree(harray);
++ return NULL;
++}
++
++static inline void harray_free(void *h)
++{
++ struct harray *harray = (struct harray *) h;
++ size_t i;
++
++ for (i = 0; harray->arrays[i] != NULL; i++)
++ kfree(harray->arrays[i]);
++ kfree(harray);
++}
++
++static inline void harray_flush(void *h, size_t hashsize, size_t typesize)
++{
++ struct harray *harray = (struct harray *) h;
++ size_t i;
++
++ for (i = 0; harray->arrays[i+1] != NULL; i++)
++ memset(harray->arrays[i], 0, harray->max_elements * typesize);
++ memset(harray->arrays[i], 0,
++ (hashsize - i * harray->max_elements) * typesize);
++}
++
++#define HARRAY_ELEM(h, type, which) \
++({ \
++ struct harray *__h = (struct harray *)(h); \
++ ((type)((__h)->arrays[(which)/(__h)->max_elements]) \
++ + (which)%(__h)->max_elements); \
++})
++
++#endif /* __KERNEL__ */
++
++#endif /*_IP_SET_MALLOC_H*/
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_nethash.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_nethash.h 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,55 @@
++#ifndef __IP_SET_NETHASH_H
++#define __IP_SET_NETHASH_H
++
++#include <linux/netfilter_ipv4/ip_set.h>
++
++#define SETTYPE_NAME "nethash"
++#define MAX_RANGE 0x0000FFFF
++
++struct ip_set_nethash {
++ ip_set_ip_t *members; /* the nethash proper */
++ uint32_t elements; /* number of elements */
++ uint32_t hashsize; /* hash size */
++ uint16_t probes; /* max number of probes */
++ uint16_t resize; /* resize factor in percent */
++ unsigned char cidr[30]; /* CIDR sizes */
++ void *initval[0]; /* initvals for jhash_1word */
++};
++
++struct ip_set_req_nethash_create {
++ uint32_t hashsize;
++ uint16_t probes;
++ uint16_t resize;
++};
++
++struct ip_set_req_nethash {
++ ip_set_ip_t ip;
++ unsigned char cidr;
++};
++
++static unsigned char shifts[] = {255, 253, 249, 241, 225, 193, 129, 1};
++
++static inline ip_set_ip_t
++pack(ip_set_ip_t ip, unsigned char cidr)
++{
++ ip_set_ip_t addr, *paddr = &addr;
++ unsigned char n, t, *a;
++
++ addr = htonl(ip & (0xFFFFFFFF << (32 - (cidr))));
++#ifdef __KERNEL__
++ DP("ip:%u.%u.%u.%u/%u", NIPQUAD(addr), cidr);
++#endif
++ n = cidr / 8;
++ t = cidr % 8;
++ a = &((unsigned char *)paddr)[n];
++ *a = *a /(1 << (8 - t)) + shifts[t];
++#ifdef __KERNEL__
++ DP("n: %u, t: %u, a: %u", n, t, *a);
++ DP("ip:%u.%u.%u.%u/%u, %u.%u.%u.%u",
++ HIPQUAD(ip), cidr, NIPQUAD(addr));
++#endif
++
++ return ntohl(addr);
++}
++
++#endif /* __IP_SET_NETHASH_H */
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_portmap.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ip_set_portmap.h 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,25 @@
++#ifndef __IP_SET_PORTMAP_H
++#define __IP_SET_PORTMAP_H
++
++#include <linux/netfilter_ipv4/ip_set.h>
++
++#define SETTYPE_NAME "portmap"
++#define MAX_RANGE 0x0000FFFF
++#define INVALID_PORT (MAX_RANGE + 1)
++
++struct ip_set_portmap {
++ void *members; /* the portmap proper */
++ ip_set_ip_t first_port; /* host byte order, included in range */
++ ip_set_ip_t last_port; /* host byte order, included in range */
++};
++
++struct ip_set_req_portmap_create {
++ ip_set_ip_t from;
++ ip_set_ip_t to;
++};
++
++struct ip_set_req_portmap {
++ ip_set_ip_t port;
++};
++
++#endif /* __IP_SET_PORTMAP_H */
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_set.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_set.h 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,21 @@
++#ifndef _IPT_SET_H
++#define _IPT_SET_H
++
++#include <linux/netfilter_ipv4/ip_set.h>
++
++struct ipt_set_info {
++ ip_set_id_t index;
++ u_int32_t flags[IP_SET_MAX_BINDINGS + 1];
++};
++
++/* match info */
++struct ipt_set_info_match {
++ struct ipt_set_info match_set;
++};
++
++struct ipt_set_info_target {
++ struct ipt_set_info add_set;
++ struct ipt_set_info del_set;
++};
++
++#endif /*_IPT_SET_H*/
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ip_set.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ip_set.c 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,2001 @@
++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
++ * Patrick Schaaf <bof@bof.de>
++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* Kernel module for IP set management */
++
++#include <linux/version.h>
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++#include <linux/config.h>
++#endif
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/kmod.h>
++#include <linux/ip.h>
++#include <linux/skbuff.h>
++#include <linux/random.h>
++#include <linux/jhash.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/errno.h>
++#include <asm/uaccess.h>
++#include <asm/bitops.h>
++#include <asm/semaphore.h>
++#include <linux/spinlock.h>
++#include <linux/vmalloc.h>
++
++#define ASSERT_READ_LOCK(x)
++#define ASSERT_WRITE_LOCK(x)
++#include <linux/netfilter_ipv4/ip_set.h>
++
++static struct list_head set_type_list; /* all registered sets */
++static struct ip_set **ip_set_list; /* all individual sets */
++static DEFINE_RWLOCK(ip_set_lock); /* protects the lists and the hash */
++static DECLARE_MUTEX(ip_set_app_mutex); /* serializes user access */
++static ip_set_id_t ip_set_max = CONFIG_IP_NF_SET_MAX;
++static ip_set_id_t ip_set_bindings_hash_size = CONFIG_IP_NF_SET_HASHSIZE;
++static struct list_head *ip_set_hash; /* hash of bindings */
++static unsigned int ip_set_hash_random; /* random seed */
++
++/*
++ * Sets are identified either by the index in ip_set_list or by id.
++ * The id never changes and is used to find a key in the hash.
++ * The index may change by swapping and used at all other places
++ * (set/SET netfilter modules, binding value, etc.)
++ *
++ * Userspace requests are serialized by ip_set_mutex and sets can
++ * be deleted only from userspace. Therefore ip_set_list locking
++ * must obey the following rules:
++ *
++ * - kernel requests: read and write locking mandatory
++ * - user requests: read locking optional, write locking mandatory
++ */
++
++static inline void
++__ip_set_get(ip_set_id_t index)
++{
++ atomic_inc(&ip_set_list[index]->ref);
++}
++
++static inline void
++__ip_set_put(ip_set_id_t index)
++{
++ atomic_dec(&ip_set_list[index]->ref);
++}
++
++/*
++ * Binding routines
++ */
++
++static inline struct ip_set_hash *
++__ip_set_find(u_int32_t key, ip_set_id_t id, ip_set_ip_t ip)
++{
++ struct ip_set_hash *set_hash;
++
++ list_for_each_entry(set_hash, &ip_set_hash[key], list)
++ if (set_hash->id == id && set_hash->ip == ip)
++ return set_hash;
++
++ return NULL;
++}
++
++static ip_set_id_t
++ip_set_find_in_hash(ip_set_id_t id, ip_set_ip_t ip)
++{
++ u_int32_t key = jhash_2words(id, ip, ip_set_hash_random)
++ % ip_set_bindings_hash_size;
++ struct ip_set_hash *set_hash;
++
++ ASSERT_READ_LOCK(&ip_set_lock);
++ IP_SET_ASSERT(ip_set_list[id]);
++ DP("set: %s, ip: %u.%u.%u.%u", ip_set_list[id]->name, HIPQUAD(ip));
++
++ set_hash = __ip_set_find(key, id, ip);
++
++ DP("set: %s, ip: %u.%u.%u.%u, binding: %s", ip_set_list[id]->name,
++ HIPQUAD(ip),
++ set_hash != NULL ? ip_set_list[set_hash->binding]->name : "");
++
++ return (set_hash != NULL ? set_hash->binding : IP_SET_INVALID_ID);
++}
++
++static inline void
++__set_hash_del(struct ip_set_hash *set_hash)
++{
++ ASSERT_WRITE_LOCK(&ip_set_lock);
++ IP_SET_ASSERT(ip_set_list[set_hash->binding]);
++
++ __ip_set_put(set_hash->binding);
++ list_del(&set_hash->list);
++ kfree(set_hash);
++}
++
++static int
++ip_set_hash_del(ip_set_id_t id, ip_set_ip_t ip)
++{
++ u_int32_t key = jhash_2words(id, ip, ip_set_hash_random)
++ % ip_set_bindings_hash_size;
++ struct ip_set_hash *set_hash;
++
++ IP_SET_ASSERT(ip_set_list[id]);
++ DP("set: %s, ip: %u.%u.%u.%u", ip_set_list[id]->name, HIPQUAD(ip));
++ write_lock_bh(&ip_set_lock);
++ set_hash = __ip_set_find(key, id, ip);
++ DP("set: %s, ip: %u.%u.%u.%u, binding: %s", ip_set_list[id]->name,
++ HIPQUAD(ip),
++ set_hash != NULL ? ip_set_list[set_hash->binding]->name : "");
++
++ if (set_hash != NULL)
++ __set_hash_del(set_hash);
++ write_unlock_bh(&ip_set_lock);
++ return 0;
++}
++
++static int
++ip_set_hash_add(ip_set_id_t id, ip_set_ip_t ip, ip_set_id_t binding)
++{
++ u_int32_t key = jhash_2words(id, ip, ip_set_hash_random)
++ % ip_set_bindings_hash_size;
++ struct ip_set_hash *set_hash;
++ int ret = 0;
++
++ IP_SET_ASSERT(ip_set_list[id]);
++ IP_SET_ASSERT(ip_set_list[binding]);
++ DP("set: %s, ip: %u.%u.%u.%u, binding: %s", ip_set_list[id]->name,
++ HIPQUAD(ip), ip_set_list[binding]->name);
++ write_lock_bh(&ip_set_lock);
++ set_hash = __ip_set_find(key, id, ip);
++ if (!set_hash) {
++ set_hash = kmalloc(sizeof(struct ip_set_hash), GFP_ATOMIC);
++ if (!set_hash) {
++ ret = -ENOMEM;
++ goto unlock;
++ }
++ INIT_LIST_HEAD(&set_hash->list);
++ set_hash->id = id;
++ set_hash->ip = ip;
++ list_add(&set_hash->list, &ip_set_hash[key]);
++ } else {
++ IP_SET_ASSERT(ip_set_list[set_hash->binding]);
++ DP("overwrite binding: %s",
++ ip_set_list[set_hash->binding]->name);
++ __ip_set_put(set_hash->binding);
++ }
++ set_hash->binding = binding;
++ __ip_set_get(set_hash->binding);
++ DP("stored: key %u, id %u (%s), ip %u.%u.%u.%u, binding %u (%s)",
++ key, id, ip_set_list[id]->name,
++ HIPQUAD(ip), binding, ip_set_list[binding]->name);
++ unlock:
++ write_unlock_bh(&ip_set_lock);
++ return ret;
++}
++
++#define FOREACH_HASH_DO(fn, args...) \
++({ \
++ ip_set_id_t __key; \
++ struct ip_set_hash *__set_hash; \
++ \
++ for (__key = 0; __key < ip_set_bindings_hash_size; __key++) { \
++ list_for_each_entry(__set_hash, &ip_set_hash[__key], list) \
++ fn(__set_hash , ## args); \
++ } \
++})
++
++#define FOREACH_HASH_RW_DO(fn, args...) \
++({ \
++ ip_set_id_t __key; \
++ struct ip_set_hash *__set_hash, *__n; \
++ \
++ ASSERT_WRITE_LOCK(&ip_set_lock); \
++ for (__key = 0; __key < ip_set_bindings_hash_size; __key++) { \
++ list_for_each_entry_safe(__set_hash, __n, &ip_set_hash[__key], list)\
++ fn(__set_hash , ## args); \
++ } \
++})
++
++/* Add, del and test set entries from kernel */
++
++#define follow_bindings(index, set, ip) \
++((index = ip_set_find_in_hash((set)->id, ip)) != IP_SET_INVALID_ID \
++ || (index = (set)->binding) != IP_SET_INVALID_ID)
++
++int
++ip_set_testip_kernel(ip_set_id_t index,
++ const struct sk_buff *skb,
++ const u_int32_t *flags)
++{
++ struct ip_set *set;
++ ip_set_ip_t ip;
++ int res;
++ unsigned char i = 0;
++
++ IP_SET_ASSERT(flags[i]);
++ read_lock_bh(&ip_set_lock);
++ do {
++ set = ip_set_list[index];
++ IP_SET_ASSERT(set);
++ DP("set %s, index %u", set->name, index);
++ read_lock_bh(&set->lock);
++ res = set->type->testip_kernel(set, skb, &ip, flags, i++);
++ read_unlock_bh(&set->lock);
++ i += !!(set->type->features & IPSET_DATA_DOUBLE);
++ } while (res > 0
++ && flags[i]
++ && follow_bindings(index, set, ip));
++ read_unlock_bh(&ip_set_lock);
++
++ return res;
++}
++
++void
++ip_set_addip_kernel(ip_set_id_t index,
++ const struct sk_buff *skb,
++ const u_int32_t *flags)
++{
++ struct ip_set *set;
++ ip_set_ip_t ip;
++ int res;
++ unsigned char i = 0;
++
++ IP_SET_ASSERT(flags[i]);
++ retry:
++ read_lock_bh(&ip_set_lock);
++ do {
++ set = ip_set_list[index];
++ IP_SET_ASSERT(set);
++ DP("set %s, index %u", set->name, index);
++ write_lock_bh(&set->lock);
++ res = set->type->addip_kernel(set, skb, &ip, flags, i++);
++ write_unlock_bh(&set->lock);
++ i += !!(set->type->features & IPSET_DATA_DOUBLE);
++ } while ((res == 0 || res == -EEXIST)
++ && flags[i]
++ && follow_bindings(index, set, ip));
++ read_unlock_bh(&ip_set_lock);
++
++ if (res == -EAGAIN
++ && set->type->retry
++ && (res = set->type->retry(set)) == 0)
++ goto retry;
++}
++
++void
++ip_set_delip_kernel(ip_set_id_t index,
++ const struct sk_buff *skb,
++ const u_int32_t *flags)
++{
++ struct ip_set *set;
++ ip_set_ip_t ip;
++ int res;
++ unsigned char i = 0;
++
++ IP_SET_ASSERT(flags[i]);
++ read_lock_bh(&ip_set_lock);
++ do {
++ set = ip_set_list[index];
++ IP_SET_ASSERT(set);
++ DP("set %s, index %u", set->name, index);
++ write_lock_bh(&set->lock);
++ res = set->type->delip_kernel(set, skb, &ip, flags, i++);
++ write_unlock_bh(&set->lock);
++ i += !!(set->type->features & IPSET_DATA_DOUBLE);
++ } while ((res == 0 || res == -EEXIST)
++ && flags[i]
++ && follow_bindings(index, set, ip));
++ read_unlock_bh(&ip_set_lock);
++}
++
++/* Register and deregister settype */
++
++static inline struct ip_set_type *
++find_set_type(const char *name)
++{
++ struct ip_set_type *set_type;
++
++ list_for_each_entry(set_type, &set_type_list, list)
++ if (!strncmp(set_type->typename, name, IP_SET_MAXNAMELEN - 1))
++ return set_type;
++ return NULL;
++}
++
++int
++ip_set_register_set_type(struct ip_set_type *set_type)
++{
++ int ret = 0;
++
++ if (set_type->protocol_version != IP_SET_PROTOCOL_VERSION) {
++ ip_set_printk("'%s' uses wrong protocol version %u (want %u)",
++ set_type->typename,
++ set_type->protocol_version,
++ IP_SET_PROTOCOL_VERSION);
++ return -EINVAL;
++ }
++
++ write_lock_bh(&ip_set_lock);
++ if (find_set_type(set_type->typename)) {
++ /* Duplicate! */
++ ip_set_printk("'%s' already registered!",
++ set_type->typename);
++ ret = -EINVAL;
++ goto unlock;
++ }
++ if (!try_module_get(THIS_MODULE)) {
++ ret = -EFAULT;
++ goto unlock;
++ }
++ list_add(&set_type->list, &set_type_list);
++ DP("'%s' registered.", set_type->typename);
++ unlock:
++ write_unlock_bh(&ip_set_lock);
++ return ret;
++}
++
++void
++ip_set_unregister_set_type(struct ip_set_type *set_type)
++{
++ write_lock_bh(&ip_set_lock);
++ if (!find_set_type(set_type->typename)) {
++ ip_set_printk("'%s' not registered?",
++ set_type->typename);
++ goto unlock;
++ }
++ list_del(&set_type->list);
++ module_put(THIS_MODULE);
++ DP("'%s' unregistered.", set_type->typename);
++ unlock:
++ write_unlock_bh(&ip_set_lock);
++
++}
++
++/*
++ * Userspace routines
++ */
++
++/*
++ * Find set by name, reference it once. The reference makes sure the
++ * thing pointed to, does not go away under our feet. Drop the reference
++ * later, using ip_set_put().
++ */
++ip_set_id_t
++ip_set_get_byname(const char *name)
++{
++ ip_set_id_t i, index = IP_SET_INVALID_ID;
++
++ down(&ip_set_app_mutex);
++ for (i = 0; i < ip_set_max; i++) {
++ if (ip_set_list[i] != NULL
++ && strcmp(ip_set_list[i]->name, name) == 0) {
++ __ip_set_get(i);
++ index = i;
++ break;
++ }
++ }
++ up(&ip_set_app_mutex);
++ return index;
++}
++
++/*
++ * Find set by index, reference it once. The reference makes sure the
++ * thing pointed to, does not go away under our feet. Drop the reference
++ * later, using ip_set_put().
++ */
++ip_set_id_t
++ip_set_get_byindex(ip_set_id_t index)
++{
++ down(&ip_set_app_mutex);
++
++ if (index >= ip_set_max)
++ return IP_SET_INVALID_ID;
++
++ if (ip_set_list[index])
++ __ip_set_get(index);
++ else
++ index = IP_SET_INVALID_ID;
++
++ up(&ip_set_app_mutex);
++ return index;
++}
++
++/*
++ * If the given set pointer points to a valid set, decrement
++ * reference count by 1. The caller shall not assume the index
++ * to be valid, after calling this function.
++ */
++void ip_set_put(ip_set_id_t index)
++{
++ down(&ip_set_app_mutex);
++ if (ip_set_list[index])
++ __ip_set_put(index);
++ up(&ip_set_app_mutex);
++}
++
++/* Find a set by name or index */
++static ip_set_id_t
++ip_set_find_byname(const char *name)
++{
++ ip_set_id_t i, index = IP_SET_INVALID_ID;
++
++ for (i = 0; i < ip_set_max; i++) {
++ if (ip_set_list[i] != NULL
++ && strcmp(ip_set_list[i]->name, name) == 0) {
++ index = i;
++ break;
++ }
++ }
++ return index;
++}
++
++static ip_set_id_t
++ip_set_find_byindex(ip_set_id_t index)
++{
++ if (index >= ip_set_max || ip_set_list[index] == NULL)
++ index = IP_SET_INVALID_ID;
++
++ return index;
++}
++
++/*
++ * Add, del, test, bind and unbind
++ */
++
++static inline int
++__ip_set_testip(struct ip_set *set,
++ const void *data,
++ size_t size,
++ ip_set_ip_t *ip)
++{
++ int res;
++
++ read_lock_bh(&set->lock);
++ res = set->type->testip(set, data, size, ip);
++ read_unlock_bh(&set->lock);
++
++ return res;
++}
++
++static int
++__ip_set_addip(ip_set_id_t index,
++ const void *data,
++ size_t size)
++{
++ struct ip_set *set = ip_set_list[index];
++ ip_set_ip_t ip;
++ int res;
++
++ IP_SET_ASSERT(set);
++ do {
++ write_lock_bh(&set->lock);
++ res = set->type->addip(set, data, size, &ip);
++ write_unlock_bh(&set->lock);
++ } while (res == -EAGAIN
++ && set->type->retry
++ && (res = set->type->retry(set)) == 0);
++
++ return res;
++}
++
++static int
++ip_set_addip(ip_set_id_t index,
++ const void *data,
++ size_t size)
++{
++
++ return __ip_set_addip(index,
++ data + sizeof(struct ip_set_req_adt),
++ size - sizeof(struct ip_set_req_adt));
++}
++
++static int
++ip_set_delip(ip_set_id_t index,
++ const void *data,
++ size_t size)
++{
++ struct ip_set *set = ip_set_list[index];
++ ip_set_ip_t ip;
++ int res;
++
++ IP_SET_ASSERT(set);
++ write_lock_bh(&set->lock);
++ res = set->type->delip(set,
++ data + sizeof(struct ip_set_req_adt),
++ size - sizeof(struct ip_set_req_adt),
++ &ip);
++ write_unlock_bh(&set->lock);
++
++ return res;
++}
++
++static int
++ip_set_testip(ip_set_id_t index,
++ const void *data,
++ size_t size)
++{
++ struct ip_set *set = ip_set_list[index];
++ ip_set_ip_t ip;
++ int res;
++
++ IP_SET_ASSERT(set);
++ res = __ip_set_testip(set,
++ data + sizeof(struct ip_set_req_adt),
++ size - sizeof(struct ip_set_req_adt),
++ &ip);
++
++ return (res > 0 ? -EEXIST : res);
++}
++
++static int
++ip_set_bindip(ip_set_id_t index,
++ const void *data,
++ size_t size)
++{
++ struct ip_set *set = ip_set_list[index];
++ struct ip_set_req_bind *req_bind;
++ ip_set_id_t binding;
++ ip_set_ip_t ip;
++ int res;
++
++ IP_SET_ASSERT(set);
++ if (size < sizeof(struct ip_set_req_bind))
++ return -EINVAL;
++
++ req_bind = (struct ip_set_req_bind *) data;
++ req_bind->binding[IP_SET_MAXNAMELEN - 1] = '\0';
++
++ if (strcmp(req_bind->binding, IPSET_TOKEN_DEFAULT) == 0) {
++ /* Default binding of a set */
++ char *binding_name;
++
++ if (size != sizeof(struct ip_set_req_bind) + IP_SET_MAXNAMELEN)
++ return -EINVAL;
++
++ binding_name = (char *)(data + sizeof(struct ip_set_req_bind));
++ binding_name[IP_SET_MAXNAMELEN - 1] = '\0';
++
++ binding = ip_set_find_byname(binding_name);
++ if (binding == IP_SET_INVALID_ID)
++ return -ENOENT;
++
++ write_lock_bh(&ip_set_lock);
++ /* Sets as binding values are referenced */
++ if (set->binding != IP_SET_INVALID_ID)
++ __ip_set_put(set->binding);
++ set->binding = binding;
++ __ip_set_get(set->binding);
++ write_unlock_bh(&ip_set_lock);
++
++ return 0;
++ }
++ binding = ip_set_find_byname(req_bind->binding);
++ if (binding == IP_SET_INVALID_ID)
++ return -ENOENT;
++
++ res = __ip_set_testip(set,
++ data + sizeof(struct ip_set_req_bind),
++ size - sizeof(struct ip_set_req_bind),
++ &ip);
++ DP("set %s, ip: %u.%u.%u.%u, binding %s",
++ set->name, HIPQUAD(ip), ip_set_list[binding]->name);
++
++ if (res >= 0)
++ res = ip_set_hash_add(set->id, ip, binding);
++
++ return res;
++}
++
++#define FOREACH_SET_DO(fn, args...) \
++({ \
++ ip_set_id_t __i; \
++ struct ip_set *__set; \
++ \
++ for (__i = 0; __i < ip_set_max; __i++) { \
++ __set = ip_set_list[__i]; \
++ if (__set != NULL) \
++ fn(__set , ##args); \
++ } \
++})
++
++static inline void
++__set_hash_del_byid(struct ip_set_hash *set_hash, ip_set_id_t id)
++{
++ if (set_hash->id == id)
++ __set_hash_del(set_hash);
++}
++
++static inline void
++__unbind_default(struct ip_set *set)
++{
++ if (set->binding != IP_SET_INVALID_ID) {
++ /* Sets as binding values are referenced */
++ __ip_set_put(set->binding);
++ set->binding = IP_SET_INVALID_ID;
++ }
++}
++
++static int
++ip_set_unbindip(ip_set_id_t index,
++ const void *data,
++ size_t size)
++{
++ struct ip_set *set;
++ struct ip_set_req_bind *req_bind;
++ ip_set_ip_t ip;
++ int res;
++
++ DP("");
++ if (size < sizeof(struct ip_set_req_bind))
++ return -EINVAL;
++
++ req_bind = (struct ip_set_req_bind *) data;
++ req_bind->binding[IP_SET_MAXNAMELEN - 1] = '\0';
++
++ DP("%u %s", index, req_bind->binding);
++ if (index == IP_SET_INVALID_ID) {
++ /* unbind :all: */
++ if (strcmp(req_bind->binding, IPSET_TOKEN_DEFAULT) == 0) {
++ /* Default binding of sets */
++ write_lock_bh(&ip_set_lock);
++ FOREACH_SET_DO(__unbind_default);
++ write_unlock_bh(&ip_set_lock);
++ return 0;
++ } else if (strcmp(req_bind->binding, IPSET_TOKEN_ALL) == 0) {
++ /* Flush all bindings of all sets*/
++ write_lock_bh(&ip_set_lock);
++ FOREACH_HASH_RW_DO(__set_hash_del);
++ write_unlock_bh(&ip_set_lock);
++ return 0;
++ }
++ DP("unreachable reached!");
++ return -EINVAL;
++ }
++
++ set = ip_set_list[index];
++ IP_SET_ASSERT(set);
++ if (strcmp(req_bind->binding, IPSET_TOKEN_DEFAULT) == 0) {
++ /* Default binding of set */
++ ip_set_id_t binding = ip_set_find_byindex(set->binding);
++
++ if (binding == IP_SET_INVALID_ID)
++ return -ENOENT;
++
++ write_lock_bh(&ip_set_lock);
++ /* Sets in hash values are referenced */
++ __ip_set_put(set->binding);
++ set->binding = IP_SET_INVALID_ID;
++ write_unlock_bh(&ip_set_lock);
++
++ return 0;
++ } else if (strcmp(req_bind->binding, IPSET_TOKEN_ALL) == 0) {
++ /* Flush all bindings */
++
++ write_lock_bh(&ip_set_lock);
++ FOREACH_HASH_RW_DO(__set_hash_del_byid, set->id);
++ write_unlock_bh(&ip_set_lock);
++ return 0;
++ }
++
++ res = __ip_set_testip(set,
++ data + sizeof(struct ip_set_req_bind),
++ size - sizeof(struct ip_set_req_bind),
++ &ip);
++
++ DP("set %s, ip: %u.%u.%u.%u", set->name, HIPQUAD(ip));
++ if (res >= 0)
++ res = ip_set_hash_del(set->id, ip);
++
++ return res;
++}
++
++static int
++ip_set_testbind(ip_set_id_t index,
++ const void *data,
++ size_t size)
++{
++ struct ip_set *set = ip_set_list[index];
++ struct ip_set_req_bind *req_bind;
++ ip_set_id_t binding;
++ ip_set_ip_t ip;
++ int res;
++
++ IP_SET_ASSERT(set);
++ if (size < sizeof(struct ip_set_req_bind))
++ return -EINVAL;
++
++ req_bind = (struct ip_set_req_bind *) data;
++ req_bind->binding[IP_SET_MAXNAMELEN - 1] = '\0';
++
++ if (strcmp(req_bind->binding, IPSET_TOKEN_DEFAULT) == 0) {
++ /* Default binding of set */
++ char *binding_name;
++
++ if (size != sizeof(struct ip_set_req_bind) + IP_SET_MAXNAMELEN)
++ return -EINVAL;
++
++ binding_name = (char *)(data + sizeof(struct ip_set_req_bind));
++ binding_name[IP_SET_MAXNAMELEN - 1] = '\0';
++
++ binding = ip_set_find_byname(binding_name);
++ if (binding == IP_SET_INVALID_ID)
++ return -ENOENT;
++
++ res = (set->binding == binding) ? -EEXIST : 0;
++
++ return res;
++ }
++ binding = ip_set_find_byname(req_bind->binding);
++ if (binding == IP_SET_INVALID_ID)
++ return -ENOENT;
++
++
++ res = __ip_set_testip(set,
++ data + sizeof(struct ip_set_req_bind),
++ size - sizeof(struct ip_set_req_bind),
++ &ip);
++ DP("set %s, ip: %u.%u.%u.%u, binding %s",
++ set->name, HIPQUAD(ip), ip_set_list[binding]->name);
++
++ if (res >= 0)
++ res = (ip_set_find_in_hash(set->id, ip) == binding)
++ ? -EEXIST : 0;
++
++ return res;
++}
++
++static struct ip_set_type *
++find_set_type_rlock(const char *typename)
++{
++ struct ip_set_type *type;
++
++ read_lock_bh(&ip_set_lock);
++ type = find_set_type(typename);
++ if (type == NULL)
++ read_unlock_bh(&ip_set_lock);
++
++ return type;
++}
++
++static int
++find_free_id(const char *name,
++ ip_set_id_t *index,
++ ip_set_id_t *id)
++{
++ ip_set_id_t i;
++
++ *id = IP_SET_INVALID_ID;
++ for (i = 0; i < ip_set_max; i++) {
++ if (ip_set_list[i] == NULL) {
++ if (*id == IP_SET_INVALID_ID)
++ *id = *index = i;
++ } else if (strcmp(name, ip_set_list[i]->name) == 0)
++ /* Name clash */
++ return -EEXIST;
++ }
++ if (*id == IP_SET_INVALID_ID)
++ /* No free slot remained */
++ return -ERANGE;
++ /* Check that index is usable as id (swapping) */
++ check:
++ for (i = 0; i < ip_set_max; i++) {
++ if (ip_set_list[i] != NULL
++ && ip_set_list[i]->id == *id) {
++ *id = i;
++ goto check;
++ }
++ }
++ return 0;
++}
++
++/*
++ * Create a set
++ */
++static int
++ip_set_create(const char *name,
++ const char *typename,
++ ip_set_id_t restore,
++ const void *data,
++ size_t size)
++{
++ struct ip_set *set;
++ ip_set_id_t index = 0, id;
++ int res = 0;
++
++ DP("setname: %s, typename: %s, id: %u", name, typename, restore);
++ /*
++ * First, and without any locks, allocate and initialize
++ * a normal base set structure.
++ */
++ set = kmalloc(sizeof(struct ip_set), GFP_KERNEL);
++ if (!set)
++ return -ENOMEM;
++ set->lock = RW_LOCK_UNLOCKED;
++ strncpy(set->name, name, IP_SET_MAXNAMELEN);
++ set->binding = IP_SET_INVALID_ID;
++ atomic_set(&set->ref, 0);
++
++ /*
++ * Next, take the &ip_set_lock, check that we know the type,
++ * and take a reference on the type, to make sure it
++ * stays available while constructing our new set.
++ *
++ * After referencing the type, we drop the &ip_set_lock,
++ * and let the new set construction run without locks.
++ */
++ set->type = find_set_type_rlock(typename);
++ if (set->type == NULL) {
++ /* Try loading the module */
++ char modulename[IP_SET_MAXNAMELEN + strlen("ip_set_") + 1];
++ strcpy(modulename, "ip_set_");
++ strcat(modulename, typename);
++ DP("try to load %s", modulename);
++ request_module(modulename);
++ set->type = find_set_type_rlock(typename);
++ }
++ if (set->type == NULL) {
++ ip_set_printk("no set type '%s', set '%s' not created",
++ typename, name);
++ res = -ENOENT;
++ goto out;
++ }
++ if (!try_module_get(set->type->me)) {
++ read_unlock_bh(&ip_set_lock);
++ res = -EFAULT;
++ goto out;
++ }
++ read_unlock_bh(&ip_set_lock);
++
++ /*
++ * Without holding any locks, create private part.
++ */
++ res = set->type->create(set, data, size);
++ if (res != 0)
++ goto put_out;
++
++ /* BTW, res==0 here. */
++
++ /*
++ * Here, we have a valid, constructed set. &ip_set_lock again,
++ * find free id/index and check that it is not already in
++ * ip_set_list.
++ */
++ write_lock_bh(&ip_set_lock);
++ if ((res = find_free_id(set->name, &index, &id)) != 0) {
++ DP("no free id!");
++ goto cleanup;
++ }
++
++ /* Make sure restore gets the same index */
++ if (restore != IP_SET_INVALID_ID && index != restore) {
++ DP("Can't restore, sets are screwed up");
++ res = -ERANGE;
++ goto cleanup;
++ }
++
++ /*
++ * Finally! Add our shiny new set to the list, and be done.
++ */
++ DP("create: '%s' created with index %u, id %u!", set->name, index, id);
++ set->id = id;
++ ip_set_list[index] = set;
++ write_unlock_bh(&ip_set_lock);
++ return res;
++
++ cleanup:
++ write_unlock_bh(&ip_set_lock);
++ set->type->destroy(set);
++ put_out:
++ module_put(set->type->me);
++ out:
++ kfree(set);
++ return res;
++}
++
++/*
++ * Destroy a given existing set
++ */
++static void
++ip_set_destroy_set(ip_set_id_t index)
++{
++ struct ip_set *set = ip_set_list[index];
++
++ IP_SET_ASSERT(set);
++ DP("set: %s", set->name);
++ write_lock_bh(&ip_set_lock);
++ FOREACH_HASH_RW_DO(__set_hash_del_byid, set->id);
++ if (set->binding != IP_SET_INVALID_ID)
++ __ip_set_put(set->binding);
++ ip_set_list[index] = NULL;
++ write_unlock_bh(&ip_set_lock);
++
++ /* Must call it without holding any lock */
++ set->type->destroy(set);
++ module_put(set->type->me);
++ kfree(set);
++}
++
++/*
++ * Destroy a set - or all sets
++ * Sets must not be referenced/used.
++ */
++static int
++ip_set_destroy(ip_set_id_t index)
++{
++ ip_set_id_t i;
++
++ /* ref modification always protected by the mutex */
++ if (index != IP_SET_INVALID_ID) {
++ if (atomic_read(&ip_set_list[index]->ref))
++ return -EBUSY;
++ ip_set_destroy_set(index);
++ } else {
++ for (i = 0; i < ip_set_max; i++) {
++ if (ip_set_list[i] != NULL
++ && (atomic_read(&ip_set_list[i]->ref)))
++ return -EBUSY;
++ }
++
++ for (i = 0; i < ip_set_max; i++) {
++ if (ip_set_list[i] != NULL)
++ ip_set_destroy_set(i);
++ }
++ }
++ return 0;
++}
++
++static void
++ip_set_flush_set(struct ip_set *set)
++{
++ DP("set: %s %u", set->name, set->id);
++
++ write_lock_bh(&set->lock);
++ set->type->flush(set);
++ write_unlock_bh(&set->lock);
++}
++
++/*
++ * Flush data in a set - or in all sets
++ */
++static int
++ip_set_flush(ip_set_id_t index)
++{
++ if (index != IP_SET_INVALID_ID) {
++ IP_SET_ASSERT(ip_set_list[index]);
++ ip_set_flush_set(ip_set_list[index]);
++ } else
++ FOREACH_SET_DO(ip_set_flush_set);
++
++ return 0;
++}
++
++/* Rename a set */
++static int
++ip_set_rename(ip_set_id_t index, const char *name)
++{
++ struct ip_set *set = ip_set_list[index];
++ ip_set_id_t i;
++ int res = 0;
++
++ DP("set: %s to %s", set->name, name);
++ write_lock_bh(&ip_set_lock);
++ for (i = 0; i < ip_set_max; i++) {
++ if (ip_set_list[i] != NULL
++ && strncmp(ip_set_list[i]->name,
++ name,
++ IP_SET_MAXNAMELEN - 1) == 0) {
++ res = -EEXIST;
++ goto unlock;
++ }
++ }
++ strncpy(set->name, name, IP_SET_MAXNAMELEN);
++ unlock:
++ write_unlock_bh(&ip_set_lock);
++ return res;
++}
++
++/*
++ * Swap two sets so that name/index points to the other.
++ * References are also swapped.
++ */
++static int
++ip_set_swap(ip_set_id_t from_index, ip_set_id_t to_index)
++{
++ struct ip_set *from = ip_set_list[from_index];
++ struct ip_set *to = ip_set_list[to_index];
++ char from_name[IP_SET_MAXNAMELEN];
++ u_int32_t from_ref;
++
++ DP("set: %s to %s", from->name, to->name);
++ /* Features must not change. Artifical restriction. */
++ if (from->type->features != to->type->features)
++ return -ENOEXEC;
++
++ /* No magic here: ref munging protected by the mutex */
++ write_lock_bh(&ip_set_lock);
++ strncpy(from_name, from->name, IP_SET_MAXNAMELEN);
++ from_ref = atomic_read(&from->ref);
++
++ strncpy(from->name, to->name, IP_SET_MAXNAMELEN);
++ atomic_set(&from->ref, atomic_read(&to->ref));
++ strncpy(to->name, from_name, IP_SET_MAXNAMELEN);
++ atomic_set(&to->ref, from_ref);
++
++ ip_set_list[from_index] = to;
++ ip_set_list[to_index] = from;
++
++ write_unlock_bh(&ip_set_lock);
++ return 0;
++}
++
++/*
++ * List set data
++ */
++
++static inline void
++__set_hash_bindings_size_list(struct ip_set_hash *set_hash,
++ ip_set_id_t id, size_t *size)
++{
++ if (set_hash->id == id)
++ *size += sizeof(struct ip_set_hash_list);
++}
++
++static inline void
++__set_hash_bindings_size_save(struct ip_set_hash *set_hash,
++ ip_set_id_t id, size_t *size)
++{
++ if (set_hash->id == id)
++ *size += sizeof(struct ip_set_hash_save);
++}
++
++static inline void
++__set_hash_bindings(struct ip_set_hash *set_hash,
++ ip_set_id_t id, void *data, int *used)
++{
++ if (set_hash->id == id) {
++ struct ip_set_hash_list *hash_list =
++ (struct ip_set_hash_list *)(data + *used);
++
++ hash_list->ip = set_hash->ip;
++ hash_list->binding = set_hash->binding;
++ *used += sizeof(struct ip_set_hash_list);
++ }
++}
++
++static int ip_set_list_set(ip_set_id_t index,
++ void *data,
++ int *used,
++ int len)
++{
++ struct ip_set *set = ip_set_list[index];
++ struct ip_set_list *set_list;
++
++ /* Pointer to our header */
++ set_list = (struct ip_set_list *) (data + *used);
++
++ DP("set: %s, used: %d %p %p", set->name, *used, data, data + *used);
++
++ /* Get and ensure header size */
++ if (*used + sizeof(struct ip_set_list) > len)
++ goto not_enough_mem;
++ *used += sizeof(struct ip_set_list);
++
++ read_lock_bh(&set->lock);
++ /* Get and ensure set specific header size */
++ set_list->header_size = set->type->header_size;
++ if (*used + set_list->header_size > len)
++ goto unlock_set;
++
++ /* Fill in the header */
++ set_list->index = index;
++ set_list->binding = set->binding;
++ set_list->ref = atomic_read(&set->ref);
++
++ /* Fill in set spefific header data */
++ set->type->list_header(set, data + *used);
++ *used += set_list->header_size;
++
++ /* Get and ensure set specific members size */
++ set_list->members_size = set->type->list_members_size(set);
++ if (*used + set_list->members_size > len)
++ goto unlock_set;
++
++ /* Fill in set spefific members data */
++ set->type->list_members(set, data + *used);
++ *used += set_list->members_size;
++ read_unlock_bh(&set->lock);
++
++ /* Bindings */
++
++ /* Get and ensure set specific bindings size */
++ set_list->bindings_size = 0;
++ FOREACH_HASH_DO(__set_hash_bindings_size_list,
++ set->id, &set_list->bindings_size);
++ if (*used + set_list->bindings_size > len)
++ goto not_enough_mem;
++
++ /* Fill in set spefific bindings data */
++ FOREACH_HASH_DO(__set_hash_bindings, set->id, data, used);
++
++ return 0;
++
++ unlock_set:
++ read_unlock_bh(&set->lock);
++ not_enough_mem:
++ DP("not enough mem, try again");
++ return -EAGAIN;
++}
++
++/*
++ * Save sets
++ */
++static int ip_set_save_set(ip_set_id_t index,
++ void *data,
++ int *used,
++ int len)
++{
++ struct ip_set *set;
++ struct ip_set_save *set_save;
++
++ /* Pointer to our header */
++ set_save = (struct ip_set_save *) (data + *used);
++
++ /* Get and ensure header size */
++ if (*used + sizeof(struct ip_set_save) > len)
++ goto not_enough_mem;
++ *used += sizeof(struct ip_set_save);
++
++ set = ip_set_list[index];
++ DP("set: %s, used: %u(%u) %p %p", set->name, *used, len,
++ data, data + *used);
++
++ read_lock_bh(&set->lock);
++ /* Get and ensure set specific header size */
++ set_save->header_size = set->type->header_size;
++ if (*used + set_save->header_size > len)
++ goto unlock_set;
++
++ /* Fill in the header */
++ set_save->index = index;
++ set_save->binding = set->binding;
++
++ /* Fill in set spefific header data */
++ set->type->list_header(set, data + *used);
++ *used += set_save->header_size;
++
++ DP("set header filled: %s, used: %u(%u) %p %p", set->name, *used,
++ set_save->header_size, data, data + *used);
++ /* Get and ensure set specific members size */
++ set_save->members_size = set->type->list_members_size(set);
++ if (*used + set_save->members_size > len)
++ goto unlock_set;
++
++ /* Fill in set spefific members data */
++ set->type->list_members(set, data + *used);
++ *used += set_save->members_size;
++ read_unlock_bh(&set->lock);
++ DP("set members filled: %s, used: %u(%u) %p %p", set->name, *used,
++ set_save->members_size, data, data + *used);
++ return 0;
++
++ unlock_set:
++ read_unlock_bh(&set->lock);
++ not_enough_mem:
++ DP("not enough mem, try again");
++ return -EAGAIN;
++}
++
++static inline void
++__set_hash_save_bindings(struct ip_set_hash *set_hash,
++ ip_set_id_t id,
++ void *data,
++ int *used,
++ int len,
++ int *res)
++{
++ if (*res == 0
++ && (id == IP_SET_INVALID_ID || set_hash->id == id)) {
++ struct ip_set_hash_save *hash_save =
++ (struct ip_set_hash_save *)(data + *used);
++ /* Ensure bindings size */
++ if (*used + sizeof(struct ip_set_hash_save) > len) {
++ *res = -ENOMEM;
++ return;
++ }
++ hash_save->id = set_hash->id;
++ hash_save->ip = set_hash->ip;
++ hash_save->binding = set_hash->binding;
++ *used += sizeof(struct ip_set_hash_save);
++ }
++}
++
++static int ip_set_save_bindings(ip_set_id_t index,
++ void *data,
++ int *used,
++ int len)
++{
++ int res = 0;
++ struct ip_set_save *set_save;
++
++ DP("used %u, len %u", *used, len);
++ /* Get and ensure header size */
++ if (*used + sizeof(struct ip_set_save) > len)
++ return -ENOMEM;
++
++ /* Marker */
++ set_save = (struct ip_set_save *) (data + *used);
++ set_save->index = IP_SET_INVALID_ID;
++ set_save->header_size = 0;
++ set_save->members_size = 0;
++ *used += sizeof(struct ip_set_save);
++
++ DP("marker added used %u, len %u", *used, len);
++ /* Fill in bindings data */
++ if (index != IP_SET_INVALID_ID)
++ /* Sets are identified by id in hash */
++ index = ip_set_list[index]->id;
++ FOREACH_HASH_DO(__set_hash_save_bindings, index, data, used, len, &res);
++
++ return res;
++}
++
++/*
++ * Restore sets
++ */
++static int ip_set_restore(void *data,
++ int len)
++{
++ int res = 0;
++ int line = 0, used = 0, members_size;
++ struct ip_set *set;
++ struct ip_set_hash_save *hash_save;
++ struct ip_set_restore *set_restore;
++ ip_set_id_t index;
++
++ /* Loop to restore sets */
++ while (1) {
++ line++;
++
++ DP("%u %u %u", used, sizeof(struct ip_set_restore), len);
++ /* Get and ensure header size */
++ if (used + sizeof(struct ip_set_restore) > len)
++ return line;
++ set_restore = (struct ip_set_restore *) (data + used);
++ used += sizeof(struct ip_set_restore);
++
++ /* Ensure data size */
++ if (used
++ + set_restore->header_size
++ + set_restore->members_size > len)
++ return line;
++
++ /* Check marker */
++ if (set_restore->index == IP_SET_INVALID_ID) {
++ line--;
++ goto bindings;
++ }
++
++ /* Try to create the set */
++ DP("restore %s %s", set_restore->name, set_restore->typename);
++ res = ip_set_create(set_restore->name,
++ set_restore->typename,
++ set_restore->index,
++ data + used,
++ set_restore->header_size);
++
++ if (res != 0)
++ return line;
++ used += set_restore->header_size;
++
++ index = ip_set_find_byindex(set_restore->index);
++ DP("index %u, restore_index %u", index, set_restore->index);
++ if (index != set_restore->index)
++ return line;
++ /* Try to restore members data */
++ set = ip_set_list[index];
++ members_size = 0;
++ DP("members_size %u reqsize %u",
++ set_restore->members_size, set->type->reqsize);
++ while (members_size + set->type->reqsize <=
++ set_restore->members_size) {
++ line++;
++ DP("members: %u, line %u", members_size, line);
++ res = __ip_set_addip(index,
++ data + used + members_size,
++ set->type->reqsize);
++ if (!(res == 0 || res == -EEXIST))
++ return line;
++ members_size += set->type->reqsize;
++ }
++
++ DP("members_size %u %u",
++ set_restore->members_size, members_size);
++ if (members_size != set_restore->members_size)
++ return line++;
++ used += set_restore->members_size;
++ }
++
++ bindings:
++ /* Loop to restore bindings */
++ while (used < len) {
++ line++;
++
++ DP("restore binding, line %u", line);
++ /* Get and ensure size */
++ if (used + sizeof(struct ip_set_hash_save) > len)
++ return line;
++ hash_save = (struct ip_set_hash_save *) (data + used);
++ used += sizeof(struct ip_set_hash_save);
++
++ /* hash_save->id is used to store the index */
++ index = ip_set_find_byindex(hash_save->id);
++ DP("restore binding index %u, id %u, %u -> %u",
++ index, hash_save->id, hash_save->ip, hash_save->binding);
++ if (index != hash_save->id)
++ return line;
++ if (ip_set_find_byindex(hash_save->binding) == IP_SET_INVALID_ID) {
++ DP("corrupt binding set index %u", hash_save->binding);
++ return line;
++ }
++ set = ip_set_list[hash_save->id];
++ /* Null valued IP means default binding */
++ if (hash_save->ip)
++ res = ip_set_hash_add(set->id,
++ hash_save->ip,
++ hash_save->binding);
++ else {
++ IP_SET_ASSERT(set->binding == IP_SET_INVALID_ID);
++ write_lock_bh(&ip_set_lock);
++ set->binding = hash_save->binding;
++ __ip_set_get(set->binding);
++ write_unlock_bh(&ip_set_lock);
++ DP("default binding: %u", set->binding);
++ }
++ if (res != 0)
++ return line;
++ }
++ if (used != len)
++ return line;
++
++ return 0;
++}
++
++static int
++ip_set_sockfn_set(struct sock *sk, int optval, void *user, unsigned int len)
++{
++ void *data;
++ int res = 0; /* Assume OK */
++ unsigned *op;
++ struct ip_set_req_adt *req_adt;
++ ip_set_id_t index = IP_SET_INVALID_ID;
++ int (*adtfn)(ip_set_id_t index,
++ const void *data, size_t size);
++ struct fn_table {
++ int (*fn)(ip_set_id_t index,
++ const void *data, size_t size);
++ } adtfn_table[] =
++ { { ip_set_addip }, { ip_set_delip }, { ip_set_testip},
++ { ip_set_bindip}, { ip_set_unbindip }, { ip_set_testbind },
++ };
++
++ DP("optval=%d, user=%p, len=%d", optval, user, len);
++ if (!capable(CAP_NET_ADMIN))
++ return -EPERM;
++ if (optval != SO_IP_SET)
++ return -EBADF;
++ if (len <= sizeof(unsigned)) {
++ ip_set_printk("short userdata (want >%zu, got %u)",
++ sizeof(unsigned), len);
++ return -EINVAL;
++ }
++ data = vmalloc(len);
++ if (!data) {
++ DP("out of mem for %u bytes", len);
++ return -ENOMEM;
++ }
++ if (copy_from_user(data, user, len) != 0) {
++ res = -EFAULT;
++ goto done;
++ }
++ if (down_interruptible(&ip_set_app_mutex)) {
++ res = -EINTR;
++ goto done;
++ }
++
++ op = (unsigned *)data;
++ DP("op=%x", *op);
++
++ if (*op < IP_SET_OP_VERSION) {
++ /* Check the version at the beginning of operations */
++ struct ip_set_req_version *req_version =
++ (struct ip_set_req_version *) data;
++ if (req_version->version != IP_SET_PROTOCOL_VERSION) {
++ res = -EPROTO;
++ goto done;
++ }
++ }
++
++ switch (*op) {
++ case IP_SET_OP_CREATE:{
++ struct ip_set_req_create *req_create
++ = (struct ip_set_req_create *) data;
++
++ if (len < sizeof(struct ip_set_req_create)) {
++ ip_set_printk("short CREATE data (want >=%zu, got %u)",
++ sizeof(struct ip_set_req_create), len);
++ res = -EINVAL;
++ goto done;
++ }
++ req_create->name[IP_SET_MAXNAMELEN - 1] = '\0';
++ req_create->typename[IP_SET_MAXNAMELEN - 1] = '\0';
++ res = ip_set_create(req_create->name,
++ req_create->typename,
++ IP_SET_INVALID_ID,
++ data + sizeof(struct ip_set_req_create),
++ len - sizeof(struct ip_set_req_create));
++ goto done;
++ }
++ case IP_SET_OP_DESTROY:{
++ struct ip_set_req_std *req_destroy
++ = (struct ip_set_req_std *) data;
++
++ if (len != sizeof(struct ip_set_req_std)) {
++ ip_set_printk("invalid DESTROY data (want %zu, got %u)",
++ sizeof(struct ip_set_req_std), len);
++ res = -EINVAL;
++ goto done;
++ }
++ if (strcmp(req_destroy->name, IPSET_TOKEN_ALL) == 0) {
++ /* Destroy all sets */
++ index = IP_SET_INVALID_ID;
++ } else {
++ req_destroy->name[IP_SET_MAXNAMELEN - 1] = '\0';
++ index = ip_set_find_byname(req_destroy->name);
++
++ if (index == IP_SET_INVALID_ID) {
++ res = -ENOENT;
++ goto done;
++ }
++ }
++
++ res = ip_set_destroy(index);
++ goto done;
++ }
++ case IP_SET_OP_FLUSH:{
++ struct ip_set_req_std *req_flush =
++ (struct ip_set_req_std *) data;
++
++ if (len != sizeof(struct ip_set_req_std)) {
++ ip_set_printk("invalid FLUSH data (want %zu, got %u)",
++ sizeof(struct ip_set_req_std), len);
++ res = -EINVAL;
++ goto done;
++ }
++ if (strcmp(req_flush->name, IPSET_TOKEN_ALL) == 0) {
++ /* Flush all sets */
++ index = IP_SET_INVALID_ID;
++ } else {
++ req_flush->name[IP_SET_MAXNAMELEN - 1] = '\0';
++ index = ip_set_find_byname(req_flush->name);
++
++ if (index == IP_SET_INVALID_ID) {
++ res = -ENOENT;
++ goto done;
++ }
++ }
++ res = ip_set_flush(index);
++ goto done;
++ }
++ case IP_SET_OP_RENAME:{
++ struct ip_set_req_create *req_rename
++ = (struct ip_set_req_create *) data;
++
++ if (len != sizeof(struct ip_set_req_create)) {
++ ip_set_printk("invalid RENAME data (want %zu, got %u)",
++ sizeof(struct ip_set_req_create), len);
++ res = -EINVAL;
++ goto done;
++ }
++
++ req_rename->name[IP_SET_MAXNAMELEN - 1] = '\0';
++ req_rename->typename[IP_SET_MAXNAMELEN - 1] = '\0';
++
++ index = ip_set_find_byname(req_rename->name);
++ if (index == IP_SET_INVALID_ID) {
++ res = -ENOENT;
++ goto done;
++ }
++ res = ip_set_rename(index, req_rename->typename);
++ goto done;
++ }
++ case IP_SET_OP_SWAP:{
++ struct ip_set_req_create *req_swap
++ = (struct ip_set_req_create *) data;
++ ip_set_id_t to_index;
++
++ if (len != sizeof(struct ip_set_req_create)) {
++ ip_set_printk("invalid SWAP data (want %zu, got %u)",
++ sizeof(struct ip_set_req_create), len);
++ res = -EINVAL;
++ goto done;
++ }
++
++ req_swap->name[IP_SET_MAXNAMELEN - 1] = '\0';
++ req_swap->typename[IP_SET_MAXNAMELEN - 1] = '\0';
++
++ index = ip_set_find_byname(req_swap->name);
++ if (index == IP_SET_INVALID_ID) {
++ res = -ENOENT;
++ goto done;
++ }
++ to_index = ip_set_find_byname(req_swap->typename);
++ if (to_index == IP_SET_INVALID_ID) {
++ res = -ENOENT;
++ goto done;
++ }
++ res = ip_set_swap(index, to_index);
++ goto done;
++ }
++ default:
++ break; /* Set identified by id */
++ }
++
++ /* There we may have add/del/test/bind/unbind/test_bind operations */
++ if (*op < IP_SET_OP_ADD_IP || *op > IP_SET_OP_TEST_BIND_SET) {
++ res = -EBADMSG;
++ goto done;
++ }
++ adtfn = adtfn_table[*op - IP_SET_OP_ADD_IP].fn;
++
++ if (len < sizeof(struct ip_set_req_adt)) {
++ ip_set_printk("short data in adt request (want >=%zu, got %u)",
++ sizeof(struct ip_set_req_adt), len);
++ res = -EINVAL;
++ goto done;
++ }
++ req_adt = (struct ip_set_req_adt *) data;
++
++ /* -U :all: :all:|:default: uses IP_SET_INVALID_ID */
++ if (!(*op == IP_SET_OP_UNBIND_SET
++ && req_adt->index == IP_SET_INVALID_ID)) {
++ index = ip_set_find_byindex(req_adt->index);
++ if (index == IP_SET_INVALID_ID) {
++ res = -ENOENT;
++ goto done;
++ }
++ }
++ res = adtfn(index, data, len);
++
++ done:
++ up(&ip_set_app_mutex);
++ vfree(data);
++ if (res > 0)
++ res = 0;
++ DP("final result %d", res);
++ return res;
++}
++
++static int
++ip_set_sockfn_get(struct sock *sk, int optval, void *user, int *len)
++{
++ int res = 0;
++ unsigned *op;
++ ip_set_id_t index = IP_SET_INVALID_ID;
++ void *data;
++ int copylen = *len;
++
++ DP("optval=%d, user=%p, len=%d", optval, user, *len);
++ if (!capable(CAP_NET_ADMIN))
++ return -EPERM;
++ if (optval != SO_IP_SET)
++ return -EBADF;
++ if (*len < sizeof(unsigned)) {
++ ip_set_printk("short userdata (want >=%zu, got %d)",
++ sizeof(unsigned), *len);
++ return -EINVAL;
++ }
++ data = vmalloc(*len);
++ if (!data) {
++ DP("out of mem for %d bytes", *len);
++ return -ENOMEM;
++ }
++ if (copy_from_user(data, user, *len) != 0) {
++ res = -EFAULT;
++ goto done;
++ }
++ if (down_interruptible(&ip_set_app_mutex)) {
++ res = -EINTR;
++ goto done;
++ }
++
++ op = (unsigned *) data;
++ DP("op=%x", *op);
++
++ if (*op < IP_SET_OP_VERSION) {
++ /* Check the version at the beginning of operations */
++ struct ip_set_req_version *req_version =
++ (struct ip_set_req_version *) data;
++ if (req_version->version != IP_SET_PROTOCOL_VERSION) {
++ res = -EPROTO;
++ goto done;
++ }
++ }
++
++ switch (*op) {
++ case IP_SET_OP_VERSION: {
++ struct ip_set_req_version *req_version =
++ (struct ip_set_req_version *) data;
++
++ if (*len != sizeof(struct ip_set_req_version)) {
++ ip_set_printk("invalid VERSION (want %zu, got %d)",
++ sizeof(struct ip_set_req_version),
++ *len);
++ res = -EINVAL;
++ goto done;
++ }
++
++ req_version->version = IP_SET_PROTOCOL_VERSION;
++ res = copy_to_user(user, req_version,
++ sizeof(struct ip_set_req_version));
++ goto done;
++ }
++ case IP_SET_OP_GET_BYNAME: {
++ struct ip_set_req_get_set *req_get
++ = (struct ip_set_req_get_set *) data;
++
++ if (*len != sizeof(struct ip_set_req_get_set)) {
++ ip_set_printk("invalid GET_BYNAME (want %zu, got %d)",
++ sizeof(struct ip_set_req_get_set), *len);
++ res = -EINVAL;
++ goto done;
++ }
++ req_get->set.name[IP_SET_MAXNAMELEN - 1] = '\0';
++ index = ip_set_find_byname(req_get->set.name);
++ req_get->set.index = index;
++ goto copy;
++ }
++ case IP_SET_OP_GET_BYINDEX: {
++ struct ip_set_req_get_set *req_get
++ = (struct ip_set_req_get_set *) data;
++
++ if (*len != sizeof(struct ip_set_req_get_set)) {
++ ip_set_printk("invalid GET_BYINDEX (want %zu, got %d)",
++ sizeof(struct ip_set_req_get_set), *len);
++ res = -EINVAL;
++ goto done;
++ }
++ req_get->set.name[IP_SET_MAXNAMELEN - 1] = '\0';
++ index = ip_set_find_byindex(req_get->set.index);
++ strncpy(req_get->set.name,
++ index == IP_SET_INVALID_ID ? ""
++ : ip_set_list[index]->name, IP_SET_MAXNAMELEN);
++ goto copy;
++ }
++ case IP_SET_OP_ADT_GET: {
++ struct ip_set_req_adt_get *req_get
++ = (struct ip_set_req_adt_get *) data;
++
++ if (*len != sizeof(struct ip_set_req_adt_get)) {
++ ip_set_printk("invalid ADT_GET (want %zu, got %d)",
++ sizeof(struct ip_set_req_adt_get), *len);
++ res = -EINVAL;
++ goto done;
++ }
++ req_get->set.name[IP_SET_MAXNAMELEN - 1] = '\0';
++ index = ip_set_find_byname(req_get->set.name);
++ if (index != IP_SET_INVALID_ID) {
++ req_get->set.index = index;
++ strncpy(req_get->typename,
++ ip_set_list[index]->type->typename,
++ IP_SET_MAXNAMELEN - 1);
++ } else {
++ res = -ENOENT;
++ goto done;
++ }
++ goto copy;
++ }
++ case IP_SET_OP_MAX_SETS: {
++ struct ip_set_req_max_sets *req_max_sets
++ = (struct ip_set_req_max_sets *) data;
++ ip_set_id_t i;
++
++ if (*len != sizeof(struct ip_set_req_max_sets)) {
++ ip_set_printk("invalid MAX_SETS (want %zu, got %d)",
++ sizeof(struct ip_set_req_max_sets), *len);
++ res = -EINVAL;
++ goto done;
++ }
++
++ if (strcmp(req_max_sets->set.name, IPSET_TOKEN_ALL) == 0) {
++ req_max_sets->set.index = IP_SET_INVALID_ID;
++ } else {
++ req_max_sets->set.name[IP_SET_MAXNAMELEN - 1] = '\0';
++ req_max_sets->set.index =
++ ip_set_find_byname(req_max_sets->set.name);
++ if (req_max_sets->set.index == IP_SET_INVALID_ID) {
++ res = -ENOENT;
++ goto done;
++ }
++ }
++ req_max_sets->max_sets = ip_set_max;
++ req_max_sets->sets = 0;
++ for (i = 0; i < ip_set_max; i++) {
++ if (ip_set_list[i] != NULL)
++ req_max_sets->sets++;
++ }
++ goto copy;
++ }
++ case IP_SET_OP_LIST_SIZE:
++ case IP_SET_OP_SAVE_SIZE: {
++ struct ip_set_req_setnames *req_setnames
++ = (struct ip_set_req_setnames *) data;
++ struct ip_set_name_list *name_list;
++ struct ip_set *set;
++ ip_set_id_t i;
++ int used;
++
++ if (*len < sizeof(struct ip_set_req_setnames)) {
++ ip_set_printk("short LIST_SIZE (want >=%zu, got %d)",
++ sizeof(struct ip_set_req_setnames), *len);
++ res = -EINVAL;
++ goto done;
++ }
++
++ req_setnames->size = 0;
++ used = sizeof(struct ip_set_req_setnames);
++ for (i = 0; i < ip_set_max; i++) {
++ if (ip_set_list[i] == NULL)
++ continue;
++ name_list = (struct ip_set_name_list *)
++ (data + used);
++ used += sizeof(struct ip_set_name_list);
++ if (used > copylen) {
++ res = -EAGAIN;
++ goto done;
++ }
++ set = ip_set_list[i];
++ /* Fill in index, name, etc. */
++ name_list->index = i;
++ name_list->id = set->id;
++ strncpy(name_list->name,
++ set->name,
++ IP_SET_MAXNAMELEN - 1);
++ strncpy(name_list->typename,
++ set->type->typename,
++ IP_SET_MAXNAMELEN - 1);
++ DP("filled %s of type %s, index %u\n",
++ name_list->name, name_list->typename,
++ name_list->index);
++ if (!(req_setnames->index == IP_SET_INVALID_ID
++ || req_setnames->index == i))
++ continue;
++ /* Update size */
++ switch (*op) {
++ case IP_SET_OP_LIST_SIZE: {
++ req_setnames->size += sizeof(struct ip_set_list)
++ + set->type->header_size
++ + set->type->list_members_size(set);
++ /* Sets are identified by id in the hash */
++ FOREACH_HASH_DO(__set_hash_bindings_size_list,
++ set->id, &req_setnames->size);
++ break;
++ }
++ case IP_SET_OP_SAVE_SIZE: {
++ req_setnames->size += sizeof(struct ip_set_save)
++ + set->type->header_size
++ + set->type->list_members_size(set);
++ FOREACH_HASH_DO(__set_hash_bindings_size_save,
++ set->id, &req_setnames->size);
++ break;
++ }
++ default:
++ break;
++ }
++ }
++ if (copylen != used) {
++ res = -EAGAIN;
++ goto done;
++ }
++ goto copy;
++ }
++ case IP_SET_OP_LIST: {
++ struct ip_set_req_list *req_list
++ = (struct ip_set_req_list *) data;
++ ip_set_id_t i;
++ int used;
++
++ if (*len < sizeof(struct ip_set_req_list)) {
++ ip_set_printk("short LIST (want >=%zu, got %d)",
++ sizeof(struct ip_set_req_list), *len);
++ res = -EINVAL;
++ goto done;
++ }
++ index = req_list->index;
++ if (index != IP_SET_INVALID_ID
++ && ip_set_find_byindex(index) != index) {
++ res = -ENOENT;
++ goto done;
++ }
++ used = 0;
++ if (index == IP_SET_INVALID_ID) {
++ /* List all sets */
++ for (i = 0; i < ip_set_max && res == 0; i++) {
++ if (ip_set_list[i] != NULL)
++ res = ip_set_list_set(i, data, &used, *len);
++ }
++ } else {
++ /* List an individual set */
++ res = ip_set_list_set(index, data, &used, *len);
++ }
++ if (res != 0)
++ goto done;
++ else if (copylen != used) {
++ res = -EAGAIN;
++ goto done;
++ }
++ goto copy;
++ }
++ case IP_SET_OP_SAVE: {
++ struct ip_set_req_list *req_save
++ = (struct ip_set_req_list *) data;
++ ip_set_id_t i;
++ int used;
++
++ if (*len < sizeof(struct ip_set_req_list)) {
++ ip_set_printk("short SAVE (want >=%zu, got %d)",
++ sizeof(struct ip_set_req_list), *len);
++ res = -EINVAL;
++ goto done;
++ }
++ index = req_save->index;
++ if (index != IP_SET_INVALID_ID
++ && ip_set_find_byindex(index) != index) {
++ res = -ENOENT;
++ goto done;
++ }
++ used = 0;
++ if (index == IP_SET_INVALID_ID) {
++ /* Save all sets */
++ for (i = 0; i < ip_set_max && res == 0; i++) {
++ if (ip_set_list[i] != NULL)
++ res = ip_set_save_set(i, data, &used, *len);
++ }
++ } else {
++ /* Save an individual set */
++ res = ip_set_save_set(index, data, &used, *len);
++ }
++ if (res == 0)
++ res = ip_set_save_bindings(index, data, &used, *len);
++
++ if (res != 0)
++ goto done;
++ else if (copylen != used) {
++ res = -EAGAIN;
++ goto done;
++ }
++ goto copy;
++ }
++ case IP_SET_OP_RESTORE: {
++ struct ip_set_req_setnames *req_restore
++ = (struct ip_set_req_setnames *) data;
++ int line;
++
++ if (*len < sizeof(struct ip_set_req_setnames)
++ || *len != req_restore->size) {
++ ip_set_printk("invalid RESTORE (want =%zu, got %d)",
++ req_restore->size, *len);
++ res = -EINVAL;
++ goto done;
++ }
++ line = ip_set_restore(data + sizeof(struct ip_set_req_setnames),
++ req_restore->size - sizeof(struct ip_set_req_setnames));
++ DP("ip_set_restore: %u", line);
++ if (line != 0) {
++ res = -EAGAIN;
++ req_restore->size = line;
++ copylen = sizeof(struct ip_set_req_setnames);
++ goto copy;
++ }
++ goto done;
++ }
++ default:
++ res = -EBADMSG;
++ goto done;
++ } /* end of switch(op) */
++
++ copy:
++ DP("set %s, copylen %u", index != IP_SET_INVALID_ID
++ && ip_set_list[index]
++ ? ip_set_list[index]->name
++ : ":all:", copylen);
++ res = copy_to_user(user, data, copylen);
++
++ done:
++ up(&ip_set_app_mutex);
++ vfree(data);
++ if (res > 0)
++ res = 0;
++ DP("final result %d", res);
++ return res;
++}
++
++static struct nf_sockopt_ops so_set = {
++ .pf = PF_INET,
++ .set_optmin = SO_IP_SET,
++ .set_optmax = SO_IP_SET + 1,
++ .set = &ip_set_sockfn_set,
++ .get_optmin = SO_IP_SET,
++ .get_optmax = SO_IP_SET + 1,
++ .get = &ip_set_sockfn_get,
++ .use = 0
++};
++
++static int max_sets, hash_size;
++module_param(max_sets, int, 0600);
++MODULE_PARM_DESC(max_sets, "maximal number of sets");
++module_param(hash_size, int, 0600);
++MODULE_PARM_DESC(hash_size, "hash size for bindings");
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
++MODULE_DESCRIPTION("module implementing core IP set support");
++
++static int __init init(void)
++{
++ int res;
++ ip_set_id_t i;
++
++ get_random_bytes(&ip_set_hash_random, 4);
++ if (max_sets)
++ ip_set_max = max_sets;
++ ip_set_list = vmalloc(sizeof(struct ip_set *) * ip_set_max);
++ if (!ip_set_list) {
++ printk(KERN_ERR "Unable to create ip_set_list\n");
++ return -ENOMEM;
++ }
++ memset(ip_set_list, 0, sizeof(struct ip_set *) * ip_set_max);
++ if (hash_size)
++ ip_set_bindings_hash_size = hash_size;
++ ip_set_hash = vmalloc(sizeof(struct list_head) * ip_set_bindings_hash_size);
++ if (!ip_set_hash) {
++ printk(KERN_ERR "Unable to create ip_set_hash\n");
++ vfree(ip_set_list);
++ return -ENOMEM;
++ }
++ for (i = 0; i < ip_set_bindings_hash_size; i++)
++ INIT_LIST_HEAD(&ip_set_hash[i]);
++
++ INIT_LIST_HEAD(&set_type_list);
++
++ res = nf_register_sockopt(&so_set);
++ if (res != 0) {
++ ip_set_printk("SO_SET registry failed: %d", res);
++ vfree(ip_set_list);
++ vfree(ip_set_hash);
++ return res;
++ }
++ return 0;
++}
++
++static void __exit fini(void)
++{
++ /* There can't be any existing set or binding */
++ nf_unregister_sockopt(&so_set);
++ vfree(ip_set_list);
++ vfree(ip_set_hash);
++ DP("these are the famous last words");
++}
++
++EXPORT_SYMBOL(ip_set_register_set_type);
++EXPORT_SYMBOL(ip_set_unregister_set_type);
++
++EXPORT_SYMBOL(ip_set_get_byname);
++EXPORT_SYMBOL(ip_set_get_byindex);
++EXPORT_SYMBOL(ip_set_put);
++
++EXPORT_SYMBOL(ip_set_addip_kernel);
++EXPORT_SYMBOL(ip_set_delip_kernel);
++EXPORT_SYMBOL(ip_set_testip_kernel);
++
++module_init(init);
++module_exit(fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_iphash.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_iphash.c 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,413 @@
++/* Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* Kernel module implementing an ip hash set */
++
++#include <linux/module.h>
++#include <linux/ip.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ip_set.h>
++#include <linux/errno.h>
++#include <asm/uaccess.h>
++#include <asm/bitops.h>
++#include <linux/spinlock.h>
++#include <linux/vmalloc.h>
++#include <linux/random.h>
++#include <linux/jhash.h>
++
++#include <net/ip.h>
++
++#include <linux/netfilter_ipv4/ip_set_malloc.h>
++#include <linux/netfilter_ipv4/ip_set_iphash.h>
++
++static int limit = MAX_RANGE;
++
++static inline __u32
++jhash_ip(const struct ip_set_iphash *map, uint16_t i, ip_set_ip_t ip)
++{
++ return jhash_1word(ip, *(((uint32_t *) map->initval) + i));
++}
++
++static inline __u32
++hash_id(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data;
++ __u32 id;
++ u_int16_t i;
++ ip_set_ip_t *elem;
++
++ *hash_ip = ip & map->netmask;
++ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u, %u.%u.%u.%u",
++ set->name, HIPQUAD(ip), HIPQUAD(*hash_ip), HIPQUAD(map->netmask));
++
++ for (i = 0; i < map->probes; i++) {
++ id = jhash_ip(map, i, *hash_ip) % map->hashsize;
++ DP("hash key: %u", id);
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
++ if (*elem == *hash_ip)
++ return id;
++ /* No shortcut at testing - there can be deleted
++ * entries. */
++ }
++ return UINT_MAX;
++}
++
++static inline int
++__testip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ return (ip && hash_id(set, ip, hash_ip) != UINT_MAX);
++}
++
++static int
++testip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_iphash *req =
++ (struct ip_set_req_iphash *) data;
++
++ if (size != sizeof(struct ip_set_req_iphash)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_iphash),
++ size);
++ return -EINVAL;
++ }
++ return __testip(set, req->ip, hash_ip);
++}
++
++static int
++testip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ return __testip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ hash_ip);
++}
++
++static inline int
++__addip(struct ip_set_iphash *map, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ __u32 probe;
++ u_int16_t i;
++ ip_set_ip_t *elem;
++
++ if (!ip || map->elements > limit)
++ return -ERANGE;
++
++ *hash_ip = ip & map->netmask;
++
++ for (i = 0; i < map->probes; i++) {
++ probe = jhash_ip(map, i, *hash_ip) % map->hashsize;
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, probe);
++ if (*elem == *hash_ip)
++ return -EEXIST;
++ if (!*elem) {
++ *elem = *hash_ip;
++ map->elements++;
++ return 0;
++ }
++ }
++ /* Trigger rehashing */
++ return -EAGAIN;
++}
++
++static int
++addip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_iphash *req =
++ (struct ip_set_req_iphash *) data;
++
++ if (size != sizeof(struct ip_set_req_iphash)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_iphash),
++ size);
++ return -EINVAL;
++ }
++ return __addip((struct ip_set_iphash *) set->data, req->ip, hash_ip);
++}
++
++static int
++addip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ return __addip((struct ip_set_iphash *) set->data,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ hash_ip);
++}
++
++static int retry(struct ip_set *set)
++{
++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data;
++ ip_set_ip_t hash_ip, *elem;
++ void *members;
++ u_int32_t i, hashsize = map->hashsize;
++ int res;
++ struct ip_set_iphash *tmp;
++
++ if (map->resize == 0)
++ return -ERANGE;
++
++ again:
++ res = 0;
++
++ /* Calculate new hash size */
++ hashsize += (hashsize * map->resize)/100;
++ if (hashsize == map->hashsize)
++ hashsize++;
++
++ ip_set_printk("rehashing of set %s triggered: "
++ "hashsize grows from %u to %u",
++ set->name, map->hashsize, hashsize);
++
++ tmp = kmalloc(sizeof(struct ip_set_iphash)
++ + map->probes * sizeof(uint32_t), GFP_ATOMIC);
++ if (!tmp) {
++ DP("out of memory for %d bytes",
++ sizeof(struct ip_set_iphash)
++ + map->probes * sizeof(uint32_t));
++ return -ENOMEM;
++ }
++ tmp->members = harray_malloc(hashsize, sizeof(ip_set_ip_t), GFP_ATOMIC);
++ if (!tmp->members) {
++ DP("out of memory for %d bytes", hashsize * sizeof(ip_set_ip_t));
++ kfree(tmp);
++ return -ENOMEM;
++ }
++ tmp->hashsize = hashsize;
++ tmp->elements = 0;
++ tmp->probes = map->probes;
++ tmp->resize = map->resize;
++ tmp->netmask = map->netmask;
++ memcpy(tmp->initval, map->initval, map->probes * sizeof(uint32_t));
++
++ write_lock_bh(&set->lock);
++ map = (struct ip_set_iphash *) set->data; /* Play safe */
++ for (i = 0; i < map->hashsize && res == 0; i++) {
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i);
++ if (*elem)
++ res = __addip(tmp, *elem, &hash_ip);
++ }
++ if (res) {
++ /* Failure, try again */
++ write_unlock_bh(&set->lock);
++ harray_free(tmp->members);
++ kfree(tmp);
++ goto again;
++ }
++
++ /* Success at resizing! */
++ members = map->members;
++
++ map->hashsize = tmp->hashsize;
++ map->members = tmp->members;
++ write_unlock_bh(&set->lock);
++
++ harray_free(members);
++ kfree(tmp);
++
++ return 0;
++}
++
++static inline int
++__delip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data;
++ ip_set_ip_t id, *elem;
++
++ if (!ip)
++ return -ERANGE;
++
++ id = hash_id(set, ip, hash_ip);
++ if (id == UINT_MAX)
++ return -EEXIST;
++
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
++ *elem = 0;
++ map->elements--;
++
++ return 0;
++}
++
++static int
++delip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_iphash *req =
++ (struct ip_set_req_iphash *) data;
++
++ if (size != sizeof(struct ip_set_req_iphash)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_iphash),
++ size);
++ return -EINVAL;
++ }
++ return __delip(set, req->ip, hash_ip);
++}
++
++static int
++delip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ return __delip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ hash_ip);
++}
++
++static int create(struct ip_set *set, const void *data, size_t size)
++{
++ struct ip_set_req_iphash_create *req =
++ (struct ip_set_req_iphash_create *) data;
++ struct ip_set_iphash *map;
++ uint16_t i;
++
++ if (size != sizeof(struct ip_set_req_iphash_create)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_iphash_create),
++ size);
++ return -EINVAL;
++ }
++
++ if (req->hashsize < 1) {
++ ip_set_printk("hashsize too small");
++ return -ENOEXEC;
++ }
++
++ if (req->probes < 1) {
++ ip_set_printk("probes too small");
++ return -ENOEXEC;
++ }
++
++ map = kmalloc(sizeof(struct ip_set_iphash)
++ + req->probes * sizeof(uint32_t), GFP_KERNEL);
++ if (!map) {
++ DP("out of memory for %d bytes",
++ sizeof(struct ip_set_iphash)
++ + req->probes * sizeof(uint32_t));
++ return -ENOMEM;
++ }
++ for (i = 0; i < req->probes; i++)
++ get_random_bytes(((uint32_t *) map->initval)+i, 4);
++ map->elements = 0;
++ map->hashsize = req->hashsize;
++ map->probes = req->probes;
++ map->resize = req->resize;
++ map->netmask = req->netmask;
++ map->members = harray_malloc(map->hashsize, sizeof(ip_set_ip_t), GFP_KERNEL);
++ if (!map->members) {
++ DP("out of memory for %d bytes", map->hashsize * sizeof(ip_set_ip_t));
++ kfree(map);
++ return -ENOMEM;
++ }
++
++ set->data = map;
++ return 0;
++}
++
++static void destroy(struct ip_set *set)
++{
++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data;
++
++ harray_free(map->members);
++ kfree(map);
++
++ set->data = NULL;
++}
++
++static void flush(struct ip_set *set)
++{
++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data;
++ harray_flush(map->members, map->hashsize, sizeof(ip_set_ip_t));
++ map->elements = 0;
++}
++
++static void list_header(const struct ip_set *set, void *data)
++{
++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data;
++ struct ip_set_req_iphash_create *header =
++ (struct ip_set_req_iphash_create *) data;
++
++ header->hashsize = map->hashsize;
++ header->probes = map->probes;
++ header->resize = map->resize;
++ header->netmask = map->netmask;
++}
++
++static int list_members_size(const struct ip_set *set)
++{
++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data;
++
++ return (map->hashsize * sizeof(ip_set_ip_t));
++}
++
++static void list_members(const struct ip_set *set, void *data)
++{
++ struct ip_set_iphash *map = (struct ip_set_iphash *) set->data;
++ ip_set_ip_t i, *elem;
++
++ for (i = 0; i < map->hashsize; i++) {
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i);
++ ((ip_set_ip_t *)data)[i] = *elem;
++ }
++}
++
++static struct ip_set_type ip_set_iphash = {
++ .typename = SETTYPE_NAME,
++ .features = IPSET_TYPE_IP | IPSET_DATA_SINGLE,
++ .protocol_version = IP_SET_PROTOCOL_VERSION,
++ .create = &create,
++ .destroy = &destroy,
++ .flush = &flush,
++ .reqsize = sizeof(struct ip_set_req_iphash),
++ .addip = &addip,
++ .addip_kernel = &addip_kernel,
++ .retry = &retry,
++ .delip = &delip,
++ .delip_kernel = &delip_kernel,
++ .testip = &testip,
++ .testip_kernel = &testip_kernel,
++ .header_size = sizeof(struct ip_set_req_iphash_create),
++ .list_header = &list_header,
++ .list_members_size = &list_members_size,
++ .list_members = &list_members,
++ .me = THIS_MODULE,
++};
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
++MODULE_DESCRIPTION("iphash type of IP sets");
++module_param(limit, int, 0600);
++MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets");
++
++static int __init init(void)
++{
++ return ip_set_register_set_type(&ip_set_iphash);
++}
++
++static void __exit fini(void)
++{
++ /* FIXME: possible race with ip_set_create() */
++ ip_set_unregister_set_type(&ip_set_iphash);
++}
++
++module_init(init);
++module_exit(fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_ipmap.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_ipmap.c 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,327 @@
++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
++ * Patrick Schaaf <bof@bof.de>
++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* Kernel module implementing an IP set type: the single bitmap type */
++
++#include <linux/module.h>
++#include <linux/ip.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ip_set.h>
++#include <linux/errno.h>
++#include <asm/uaccess.h>
++#include <asm/bitops.h>
++#include <linux/spinlock.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv4/ip_set_ipmap.h>
++
++static inline ip_set_ip_t
++ip_to_id(const struct ip_set_ipmap *map, ip_set_ip_t ip)
++{
++ return (ip - map->first_ip)/map->hosts;
++}
++
++static inline int
++__testip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data;
++
++ if (ip < map->first_ip || ip > map->last_ip)
++ return -ERANGE;
++
++ *hash_ip = ip & map->netmask;
++ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u",
++ set->name, HIPQUAD(ip), HIPQUAD(*hash_ip));
++ return !!test_bit(ip_to_id(map, *hash_ip), map->members);
++}
++
++static int
++testip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_ipmap *req =
++ (struct ip_set_req_ipmap *) data;
++
++ if (size != sizeof(struct ip_set_req_ipmap)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_ipmap),
++ size);
++ return -EINVAL;
++ }
++ return __testip(set, req->ip, hash_ip);
++}
++
++static int
++testip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ int res;
++
++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u",
++ flags[index] & IPSET_SRC ? "SRC" : "DST",
++ NIPQUAD(ip_hdr(skb)->saddr),
++ NIPQUAD(ip_hdr(skb)->daddr));
++
++ res = __testip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ hash_ip);
++ return (res < 0 ? 0 : res);
++}
++
++static inline int
++__addip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data;
++
++ if (ip < map->first_ip || ip > map->last_ip)
++ return -ERANGE;
++
++ *hash_ip = ip & map->netmask;
++ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip));
++ if (test_and_set_bit(ip_to_id(map, *hash_ip), map->members))
++ return -EEXIST;
++
++ return 0;
++}
++
++static int
++addip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_ipmap *req =
++ (struct ip_set_req_ipmap *) data;
++
++ if (size != sizeof(struct ip_set_req_ipmap)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_ipmap),
++ size);
++ return -EINVAL;
++ }
++ DP("%u.%u.%u.%u", HIPQUAD(req->ip));
++ return __addip(set, req->ip, hash_ip);
++}
++
++static int
++addip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ return __addip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ hash_ip);
++}
++
++static inline int
++__delip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data;
++
++ if (ip < map->first_ip || ip > map->last_ip)
++ return -ERANGE;
++
++ *hash_ip = ip & map->netmask;
++ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip));
++ if (!test_and_clear_bit(ip_to_id(map, *hash_ip), map->members))
++ return -EEXIST;
++
++ return 0;
++}
++
++static int
++delip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_ipmap *req =
++ (struct ip_set_req_ipmap *) data;
++
++ if (size != sizeof(struct ip_set_req_ipmap)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_ipmap),
++ size);
++ return -EINVAL;
++ }
++ return __delip(set, req->ip, hash_ip);
++}
++
++static int
++delip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ return __delip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ hash_ip);
++}
++
++static int create(struct ip_set *set, const void *data, size_t size)
++{
++ int newbytes;
++ struct ip_set_req_ipmap_create *req =
++ (struct ip_set_req_ipmap_create *) data;
++ struct ip_set_ipmap *map;
++
++ if (size != sizeof(struct ip_set_req_ipmap_create)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_ipmap_create),
++ size);
++ return -EINVAL;
++ }
++
++ DP("from %u.%u.%u.%u to %u.%u.%u.%u",
++ HIPQUAD(req->from), HIPQUAD(req->to));
++
++ if (req->from > req->to) {
++ DP("bad ip range");
++ return -ENOEXEC;
++ }
++
++ map = kmalloc(sizeof(struct ip_set_ipmap), GFP_KERNEL);
++ if (!map) {
++ DP("out of memory for %d bytes",
++ sizeof(struct ip_set_ipmap));
++ return -ENOMEM;
++ }
++ map->first_ip = req->from;
++ map->last_ip = req->to;
++ map->netmask = req->netmask;
++
++ if (req->netmask == 0xFFFFFFFF) {
++ map->hosts = 1;
++ map->sizeid = map->last_ip - map->first_ip + 1;
++ } else {
++ unsigned int mask_bits, netmask_bits;
++ ip_set_ip_t mask;
++
++ map->first_ip &= map->netmask; /* Should we better bark? */
++
++ mask = range_to_mask(map->first_ip, map->last_ip, &mask_bits);
++ netmask_bits = mask_to_bits(map->netmask);
++
++ if ((!mask && (map->first_ip || map->last_ip != 0xFFFFFFFF))
++ || netmask_bits <= mask_bits)
++ return -ENOEXEC;
++
++ DP("mask_bits %u, netmask_bits %u",
++ mask_bits, netmask_bits);
++ map->hosts = 2 << (32 - netmask_bits - 1);
++ map->sizeid = 2 << (netmask_bits - mask_bits - 1);
++ }
++ if (map->sizeid > MAX_RANGE + 1) {
++ ip_set_printk("range too big (max %d addresses)",
++ MAX_RANGE+1);
++ kfree(map);
++ return -ENOEXEC;
++ }
++ DP("hosts %u, sizeid %u", map->hosts, map->sizeid);
++ newbytes = bitmap_bytes(0, map->sizeid - 1);
++ map->members = kmalloc(newbytes, GFP_KERNEL);
++ if (!map->members) {
++ DP("out of memory for %d bytes", newbytes);
++ kfree(map);
++ return -ENOMEM;
++ }
++ memset(map->members, 0, newbytes);
++
++ set->data = map;
++ return 0;
++}
++
++static void destroy(struct ip_set *set)
++{
++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data;
++
++ kfree(map->members);
++ kfree(map);
++
++ set->data = NULL;
++}
++
++static void flush(struct ip_set *set)
++{
++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data;
++ memset(map->members, 0, bitmap_bytes(0, map->sizeid - 1));
++}
++
++static void list_header(const struct ip_set *set, void *data)
++{
++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data;
++ struct ip_set_req_ipmap_create *header =
++ (struct ip_set_req_ipmap_create *) data;
++
++ header->from = map->first_ip;
++ header->to = map->last_ip;
++ header->netmask = map->netmask;
++}
++
++static int list_members_size(const struct ip_set *set)
++{
++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data;
++
++ return bitmap_bytes(0, map->sizeid - 1);
++}
++
++static void list_members(const struct ip_set *set, void *data)
++{
++ struct ip_set_ipmap *map = (struct ip_set_ipmap *) set->data;
++ int bytes = bitmap_bytes(0, map->sizeid - 1);
++
++ memcpy(data, map->members, bytes);
++}
++
++static struct ip_set_type ip_set_ipmap = {
++ .typename = SETTYPE_NAME,
++ .features = IPSET_TYPE_IP | IPSET_DATA_SINGLE,
++ .protocol_version = IP_SET_PROTOCOL_VERSION,
++ .create = &create,
++ .destroy = &destroy,
++ .flush = &flush,
++ .reqsize = sizeof(struct ip_set_req_ipmap),
++ .addip = &addip,
++ .addip_kernel = &addip_kernel,
++ .delip = &delip,
++ .delip_kernel = &delip_kernel,
++ .testip = &testip,
++ .testip_kernel = &testip_kernel,
++ .header_size = sizeof(struct ip_set_req_ipmap_create),
++ .list_header = &list_header,
++ .list_members_size = &list_members_size,
++ .list_members = &list_members,
++ .me = THIS_MODULE,
++};
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
++MODULE_DESCRIPTION("ipmap type of IP sets");
++
++static int __init init(void)
++{
++ return ip_set_register_set_type(&ip_set_ipmap);
++}
++
++static void __exit fini(void)
++{
++ /* FIXME: possible race with ip_set_create() */
++ ip_set_unregister_set_type(&ip_set_ipmap);
++}
++
++module_init(init);
++module_exit(fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_ipporthash.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_ipporthash.c 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,535 @@
++/* Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* Kernel module implementing an ip+port hash set */
++
++#include <linux/module.h>
++#include <linux/ip.h>
++#include <linux/tcp.h>
++#include <linux/udp.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ip_set.h>
++#include <linux/errno.h>
++#include <asm/uaccess.h>
++#include <asm/bitops.h>
++#include <linux/spinlock.h>
++#include <linux/vmalloc.h>
++#include <linux/random.h>
++#include <linux/jhash.h>
++
++#include <net/ip.h>
++
++#include <linux/netfilter_ipv4/ip_set_malloc.h>
++#include <linux/netfilter_ipv4/ip_set_ipporthash.h>
++
++static int limit = MAX_RANGE;
++
++/* We must handle non-linear skbs */
++static inline ip_set_ip_t
++get_port(const struct sk_buff *skb, u_int32_t flags)
++{
++ struct iphdr *iph = ip_hdr(skb);
++ u_int16_t offset = ntohs(iph->frag_off) & IP_OFFSET;
++
++ switch (iph->protocol) {
++ case IPPROTO_TCP: {
++ struct tcphdr tcph;
++
++ /* See comments at tcp_match in ip_tables.c */
++ if (offset)
++ return INVALID_PORT;
++
++ if (skb_copy_bits(skb, ip_hdrlen(skb), &tcph, sizeof(tcph)) < 0)
++ /* No choice either */
++ return INVALID_PORT;
++
++ return ntohs(flags & IPSET_SRC ?
++ tcph.source : tcph.dest);
++ }
++ case IPPROTO_UDP: {
++ struct udphdr udph;
++
++ if (offset)
++ return INVALID_PORT;
++
++ if (skb_copy_bits(skb, ip_hdrlen(skb), &udph, sizeof(udph)) < 0)
++ /* No choice either */
++ return INVALID_PORT;
++
++ return ntohs(flags & IPSET_SRC ?
++ udph.source : udph.dest);
++ }
++ default:
++ return INVALID_PORT;
++ }
++}
++
++static inline __u32
++jhash_ip(const struct ip_set_ipporthash *map, uint16_t i, ip_set_ip_t ip)
++{
++ return jhash_1word(ip, *(((uint32_t *) map->initval) + i));
++}
++
++#define HASH_IP(map, ip, port) (port + ((ip - ((map)->first_ip)) << 16))
++
++static inline __u32
++hash_id(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t port,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_ipporthash *map =
++ (struct ip_set_ipporthash *) set->data;
++ __u32 id;
++ u_int16_t i;
++ ip_set_ip_t *elem;
++
++ *hash_ip = HASH_IP(map, ip, port);
++ DP("set: %s, ipport:%u.%u.%u.%u:%u, %u.%u.%u.%u",
++ set->name, HIPQUAD(ip), port, HIPQUAD(*hash_ip));
++
++ for (i = 0; i < map->probes; i++) {
++ id = jhash_ip(map, i, *hash_ip) % map->hashsize;
++ DP("hash key: %u", id);
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
++ if (*elem == *hash_ip)
++ return id;
++ /* No shortcut at testing - there can be deleted
++ * entries. */
++ }
++ return UINT_MAX;
++}
++
++static inline int
++__testip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t port,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data;
++
++ if (ip < map->first_ip || ip > map->last_ip)
++ return -ERANGE;
++
++ return (hash_id(set, ip, port, hash_ip) != UINT_MAX);
++}
++
++static int
++testip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_ipporthash *req =
++ (struct ip_set_req_ipporthash *) data;
++
++ if (size != sizeof(struct ip_set_req_ipporthash)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_ipporthash),
++ size);
++ return -EINVAL;
++ }
++ return __testip(set, req->ip, req->port, hash_ip);
++}
++
++static int
++testip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ ip_set_ip_t port;
++
++ if (flags[index+1] == 0)
++ return -EINVAL;
++
++ port = get_port(skb, flags[index+1]);
++
++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u",
++ flags[index] & IPSET_SRC ? "SRC" : "DST",
++ NIPQUAD(ip_hdr(skb)->saddr),
++ NIPQUAD(ip_hdr(skb)->daddr));
++ DP("flag %s port %u",
++ flags[index+1] & IPSET_SRC ? "SRC" : "DST",
++ port);
++ if (port == INVALID_PORT)
++ return 0;
++
++ return __testip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ port,
++ hash_ip);
++}
++
++static inline int
++__add_haship(struct ip_set_ipporthash *map, ip_set_ip_t hash_ip)
++{
++ __u32 probe;
++ u_int16_t i;
++ ip_set_ip_t *elem;
++
++ for (i = 0; i < map->probes; i++) {
++ probe = jhash_ip(map, i, hash_ip) % map->hashsize;
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, probe);
++ if (*elem == hash_ip)
++ return -EEXIST;
++ if (!*elem) {
++ *elem = hash_ip;
++ map->elements++;
++ return 0;
++ }
++ }
++ /* Trigger rehashing */
++ return -EAGAIN;
++}
++
++static inline int
++__addip(struct ip_set_ipporthash *map, ip_set_ip_t ip, ip_set_ip_t port,
++ ip_set_ip_t *hash_ip)
++{
++ if (map->elements > limit)
++ return -ERANGE;
++ if (ip < map->first_ip || ip > map->last_ip)
++ return -ERANGE;
++
++ *hash_ip = HASH_IP(map, ip, port);
++
++ return __add_haship(map, *hash_ip);
++}
++
++static int
++addip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_ipporthash *req =
++ (struct ip_set_req_ipporthash *) data;
++
++ if (size != sizeof(struct ip_set_req_ipporthash)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_ipporthash),
++ size);
++ return -EINVAL;
++ }
++ return __addip((struct ip_set_ipporthash *) set->data,
++ req->ip, req->port, hash_ip);
++}
++
++static int
++addip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ ip_set_ip_t port;
++
++ if (flags[index+1] == 0)
++ return -EINVAL;
++
++ port = get_port(skb, flags[index+1]);
++
++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u",
++ flags[index] & IPSET_SRC ? "SRC" : "DST",
++ NIPQUAD(ip_hdr(skb)->saddr),
++ NIPQUAD(ip_hdr(skb)->daddr));
++ DP("flag %s port %u",
++ flags[index+1] & IPSET_SRC ? "SRC" : "DST",
++ port);
++ if (port == INVALID_PORT)
++ return -EINVAL;
++
++ return __addip((struct ip_set_ipporthash *) set->data,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ port,
++ hash_ip);
++}
++
++static int retry(struct ip_set *set)
++{
++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data;
++ ip_set_ip_t *elem;
++ void *members;
++ u_int32_t i, hashsize = map->hashsize;
++ int res;
++ struct ip_set_ipporthash *tmp;
++
++ if (map->resize == 0)
++ return -ERANGE;
++
++ again:
++ res = 0;
++
++ /* Calculate new hash size */
++ hashsize += (hashsize * map->resize)/100;
++ if (hashsize == map->hashsize)
++ hashsize++;
++
++ ip_set_printk("rehashing of set %s triggered: "
++ "hashsize grows from %u to %u",
++ set->name, map->hashsize, hashsize);
++
++ tmp = kmalloc(sizeof(struct ip_set_ipporthash)
++ + map->probes * sizeof(uint32_t), GFP_ATOMIC);
++ if (!tmp) {
++ DP("out of memory for %d bytes",
++ sizeof(struct ip_set_ipporthash)
++ + map->probes * sizeof(uint32_t));
++ return -ENOMEM;
++ }
++ tmp->members = harray_malloc(hashsize, sizeof(ip_set_ip_t), GFP_ATOMIC);
++ if (!tmp->members) {
++ DP("out of memory for %d bytes", hashsize * sizeof(ip_set_ip_t));
++ kfree(tmp);
++ return -ENOMEM;
++ }
++ tmp->hashsize = hashsize;
++ tmp->elements = 0;
++ tmp->probes = map->probes;
++ tmp->resize = map->resize;
++ tmp->first_ip = map->first_ip;
++ tmp->last_ip = map->last_ip;
++ memcpy(tmp->initval, map->initval, map->probes * sizeof(uint32_t));
++
++ write_lock_bh(&set->lock);
++ map = (struct ip_set_ipporthash *) set->data; /* Play safe */
++ for (i = 0; i < map->hashsize && res == 0; i++) {
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i);
++ if (*elem)
++ res = __add_haship(tmp, *elem);
++ }
++ if (res) {
++ /* Failure, try again */
++ write_unlock_bh(&set->lock);
++ harray_free(tmp->members);
++ kfree(tmp);
++ goto again;
++ }
++
++ /* Success at resizing! */
++ members = map->members;
++
++ map->hashsize = tmp->hashsize;
++ map->members = tmp->members;
++ write_unlock_bh(&set->lock);
++
++ harray_free(members);
++ kfree(tmp);
++
++ return 0;
++}
++
++static inline int
++__delip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t port,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data;
++ ip_set_ip_t id;
++ ip_set_ip_t *elem;
++
++ if (ip < map->first_ip || ip > map->last_ip)
++ return -ERANGE;
++
++ id = hash_id(set, ip, port, hash_ip);
++
++ if (id == UINT_MAX)
++ return -EEXIST;
++
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
++ *elem = 0;
++ map->elements--;
++
++ return 0;
++}
++
++static int
++delip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_ipporthash *req =
++ (struct ip_set_req_ipporthash *) data;
++
++ if (size != sizeof(struct ip_set_req_ipporthash)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_ipporthash),
++ size);
++ return -EINVAL;
++ }
++ return __delip(set, req->ip, req->port, hash_ip);
++}
++
++static int
++delip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ ip_set_ip_t port;
++
++ if (flags[index+1] == 0)
++ return -EINVAL;
++
++ port = get_port(skb, flags[index+1]);
++
++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u",
++ flags[index] & IPSET_SRC ? "SRC" : "DST",
++ NIPQUAD(ip_hdr(skb)->saddr),
++ NIPQUAD(ip_hdr(skb)->daddr));
++ DP("flag %s port %u",
++ flags[index+1] & IPSET_SRC ? "SRC" : "DST",
++ port);
++ if (port == INVALID_PORT)
++ return -EINVAL;
++
++ return __delip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ port,
++ hash_ip);
++}
++
++static int create(struct ip_set *set, const void *data, size_t size)
++{
++ struct ip_set_req_ipporthash_create *req =
++ (struct ip_set_req_ipporthash_create *) data;
++ struct ip_set_ipporthash *map;
++ uint16_t i;
++
++ if (size != sizeof(struct ip_set_req_ipporthash_create)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_ipporthash_create),
++ size);
++ return -EINVAL;
++ }
++
++ if (req->hashsize < 1) {
++ ip_set_printk("hashsize too small");
++ return -ENOEXEC;
++ }
++
++ if (req->probes < 1) {
++ ip_set_printk("probes too small");
++ return -ENOEXEC;
++ }
++
++ map = kmalloc(sizeof(struct ip_set_ipporthash)
++ + req->probes * sizeof(uint32_t), GFP_KERNEL);
++ if (!map) {
++ DP("out of memory for %d bytes",
++ sizeof(struct ip_set_ipporthash)
++ + req->probes * sizeof(uint32_t));
++ return -ENOMEM;
++ }
++ for (i = 0; i < req->probes; i++)
++ get_random_bytes(((uint32_t *) map->initval)+i, 4);
++ map->elements = 0;
++ map->hashsize = req->hashsize;
++ map->probes = req->probes;
++ map->resize = req->resize;
++ map->first_ip = req->from;
++ map->last_ip = req->to;
++ map->members = harray_malloc(map->hashsize, sizeof(ip_set_ip_t), GFP_KERNEL);
++ if (!map->members) {
++ DP("out of memory for %d bytes", map->hashsize * sizeof(ip_set_ip_t));
++ kfree(map);
++ return -ENOMEM;
++ }
++
++ set->data = map;
++ return 0;
++}
++
++static void destroy(struct ip_set *set)
++{
++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data;
++
++ harray_free(map->members);
++ kfree(map);
++
++ set->data = NULL;
++}
++
++static void flush(struct ip_set *set)
++{
++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data;
++ harray_flush(map->members, map->hashsize, sizeof(ip_set_ip_t));
++ map->elements = 0;
++}
++
++static void list_header(const struct ip_set *set, void *data)
++{
++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data;
++ struct ip_set_req_ipporthash_create *header =
++ (struct ip_set_req_ipporthash_create *) data;
++
++ header->hashsize = map->hashsize;
++ header->probes = map->probes;
++ header->resize = map->resize;
++ header->from = map->first_ip;
++ header->to = map->last_ip;
++}
++
++static int list_members_size(const struct ip_set *set)
++{
++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data;
++
++ return (map->hashsize * sizeof(ip_set_ip_t));
++}
++
++static void list_members(const struct ip_set *set, void *data)
++{
++ struct ip_set_ipporthash *map = (struct ip_set_ipporthash *) set->data;
++ ip_set_ip_t i, *elem;
++
++ for (i = 0; i < map->hashsize; i++) {
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i);
++ ((ip_set_ip_t *)data)[i] = *elem;
++ }
++}
++
++static struct ip_set_type ip_set_ipporthash = {
++ .typename = SETTYPE_NAME,
++ .features = IPSET_TYPE_IP | IPSET_TYPE_PORT | IPSET_DATA_DOUBLE,
++ .protocol_version = IP_SET_PROTOCOL_VERSION,
++ .create = &create,
++ .destroy = &destroy,
++ .flush = &flush,
++ .reqsize = sizeof(struct ip_set_req_ipporthash),
++ .addip = &addip,
++ .addip_kernel = &addip_kernel,
++ .retry = &retry,
++ .delip = &delip,
++ .delip_kernel = &delip_kernel,
++ .testip = &testip,
++ .testip_kernel = &testip_kernel,
++ .header_size = sizeof(struct ip_set_req_ipporthash_create),
++ .list_header = &list_header,
++ .list_members_size = &list_members_size,
++ .list_members = &list_members,
++ .me = THIS_MODULE,
++};
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
++MODULE_DESCRIPTION("ipporthash type of IP sets");
++module_param(limit, int, 0600);
++MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets");
++
++static int __init init(void)
++{
++ return ip_set_register_set_type(&ip_set_ipporthash);
++}
++
++static void __exit fini(void)
++{
++ /* FIXME: possible race with ip_set_create() */
++ ip_set_unregister_set_type(&ip_set_ipporthash);
++}
++
++module_init(init);
++module_exit(fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_iptree.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_iptree.c 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,571 @@
++/* Copyright (C) 2005 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* Kernel module implementing an IP set type: the iptree type */
++
++#include <linux/version.h>
++#include <linux/module.h>
++#include <linux/ip.h>
++#include <linux/skbuff.h>
++#include <linux/slab.h>
++#include <linux/delay.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ip_set.h>
++#include <linux/errno.h>
++#include <asm/uaccess.h>
++#include <asm/bitops.h>
++#include <linux/spinlock.h>
++
++/* Backward compatibility */
++#ifndef __nocast
++#define __nocast
++#endif
++
++#include <linux/netfilter_ipv4/ip_set_iptree.h>
++
++static int limit = MAX_RANGE;
++
++/* Garbage collection interval in seconds: */
++#define IPTREE_GC_TIME 5*60
++/* Sleep so many milliseconds before trying again
++ * to delete the gc timer at destroying/flushing a set */
++#define IPTREE_DESTROY_SLEEP 100
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
++static struct kmem_cache *branch_cachep;
++static struct kmem_cache *leaf_cachep;
++#else
++static kmem_cache_t *branch_cachep;
++static kmem_cache_t *leaf_cachep;
++#endif
++
++#define ABCD(a,b,c,d,addrp) do { \
++ a = ((unsigned char *)addrp)[3]; \
++ b = ((unsigned char *)addrp)[2]; \
++ c = ((unsigned char *)addrp)[1]; \
++ d = ((unsigned char *)addrp)[0]; \
++} while (0)
++
++#define TESTIP_WALK(map, elem, branch) do { \
++ if ((map)->tree[elem]) { \
++ branch = (map)->tree[elem]; \
++ } else \
++ return 0; \
++} while (0)
++
++static inline int
++__testip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++ struct ip_set_iptreeb *btree;
++ struct ip_set_iptreec *ctree;
++ struct ip_set_iptreed *dtree;
++ unsigned char a,b,c,d;
++
++ if (!ip)
++ return -ERANGE;
++
++ *hash_ip = ip;
++ ABCD(a, b, c, d, hash_ip);
++ DP("%u %u %u %u timeout %u", a, b, c, d, map->timeout);
++ TESTIP_WALK(map, a, btree);
++ TESTIP_WALK(btree, b, ctree);
++ TESTIP_WALK(ctree, c, dtree);
++ DP("%lu %lu", dtree->expires[d], jiffies);
++ return !!(map->timeout ? (time_after(dtree->expires[d], jiffies))
++ : dtree->expires[d]);
++}
++
++static int
++testip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_iptree *req =
++ (struct ip_set_req_iptree *) data;
++
++ if (size != sizeof(struct ip_set_req_iptree)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_iptree),
++ size);
++ return -EINVAL;
++ }
++ return __testip(set, req->ip, hash_ip);
++}
++
++static int
++testip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ int res;
++
++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u",
++ flags[index] & IPSET_SRC ? "SRC" : "DST",
++ NIPQUAD(ip_hdr(skb)->saddr),
++ NIPQUAD(ip_hdr(skb)->daddr));
++
++ res = __testip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ hash_ip);
++ return (res < 0 ? 0 : res);
++}
++
++#define ADDIP_WALK(map, elem, branch, type, cachep, flags) do { \
++ if ((map)->tree[elem]) { \
++ DP("found %u", elem); \
++ branch = (map)->tree[elem]; \
++ } else { \
++ branch = (type *) \
++ kmem_cache_alloc(cachep, flags); \
++ if (branch == NULL) \
++ return -ENOMEM; \
++ memset(branch, 0, sizeof(*branch)); \
++ (map)->tree[elem] = branch; \
++ DP("alloc %u", elem); \
++ } \
++} while (0)
++
++static inline int
++__addip(struct ip_set *set, ip_set_ip_t ip, unsigned int timeout,
++ ip_set_ip_t *hash_ip,
++ unsigned int __nocast flags)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++ struct ip_set_iptreeb *btree;
++ struct ip_set_iptreec *ctree;
++ struct ip_set_iptreed *dtree;
++ unsigned char a,b,c,d;
++ int ret = 0;
++
++ if (!ip || map->elements > limit)
++ /* We could call the garbage collector
++ * but it's probably overkill */
++ return -ERANGE;
++
++ *hash_ip = ip;
++ ABCD(a, b, c, d, hash_ip);
++ DP("%u %u %u %u timeout %u", a, b, c, d, timeout);
++ ADDIP_WALK(map, a, btree, struct ip_set_iptreeb, branch_cachep, flags);
++ ADDIP_WALK(btree, b, ctree, struct ip_set_iptreec, branch_cachep, flags);
++ ADDIP_WALK(ctree, c, dtree, struct ip_set_iptreed, leaf_cachep, flags);
++ if (dtree->expires[d]
++ && (!map->timeout || time_after(dtree->expires[d], jiffies)))
++ ret = -EEXIST;
++ dtree->expires[d] = map->timeout ? (timeout * HZ + jiffies) : 1;
++ /* Lottery */
++ if (dtree->expires[d] == 0)
++ dtree->expires[d] = 1;
++ DP("%u %lu", d, dtree->expires[d]);
++ if (ret == 0)
++ map->elements++;
++ return ret;
++}
++
++static int
++addip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++ struct ip_set_req_iptree *req =
++ (struct ip_set_req_iptree *) data;
++
++ if (size != sizeof(struct ip_set_req_iptree)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_iptree),
++ size);
++ return -EINVAL;
++ }
++ DP("%u.%u.%u.%u %u", HIPQUAD(req->ip), req->timeout);
++ return __addip(set, req->ip,
++ req->timeout ? req->timeout : map->timeout,
++ hash_ip,
++ GFP_ATOMIC);
++}
++
++static int
++addip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++
++ return __addip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ map->timeout,
++ hash_ip,
++ GFP_ATOMIC);
++}
++
++#define DELIP_WALK(map, elem, branch) do { \
++ if ((map)->tree[elem]) { \
++ branch = (map)->tree[elem]; \
++ } else \
++ return -EEXIST; \
++} while (0)
++
++static inline int
++__delip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++ struct ip_set_iptreeb *btree;
++ struct ip_set_iptreec *ctree;
++ struct ip_set_iptreed *dtree;
++ unsigned char a,b,c,d;
++
++ if (!ip)
++ return -ERANGE;
++
++ *hash_ip = ip;
++ ABCD(a, b, c, d, hash_ip);
++ DELIP_WALK(map, a, btree);
++ DELIP_WALK(btree, b, ctree);
++ DELIP_WALK(ctree, c, dtree);
++
++ if (dtree->expires[d]) {
++ dtree->expires[d] = 0;
++ map->elements--;
++ return 0;
++ }
++ return -EEXIST;
++}
++
++static int
++delip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_iptree *req =
++ (struct ip_set_req_iptree *) data;
++
++ if (size != sizeof(struct ip_set_req_iptree)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_iptree),
++ size);
++ return -EINVAL;
++ }
++ return __delip(set, req->ip, hash_ip);
++}
++
++static int
++delip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ return __delip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ hash_ip);
++}
++
++#define LOOP_WALK_BEGIN(map, i, branch) \
++ for (i = 0; i < 256; i++) { \
++ if (!(map)->tree[i]) \
++ continue; \
++ branch = (map)->tree[i]
++
++#define LOOP_WALK_END }
++
++static void ip_tree_gc(unsigned long ul_set)
++{
++ struct ip_set *set = (void *) ul_set;
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++ struct ip_set_iptreeb *btree;
++ struct ip_set_iptreec *ctree;
++ struct ip_set_iptreed *dtree;
++ unsigned int a,b,c,d;
++ unsigned char i,j,k;
++
++ i = j = k = 0;
++ DP("gc: %s", set->name);
++ write_lock_bh(&set->lock);
++ LOOP_WALK_BEGIN(map, a, btree);
++ LOOP_WALK_BEGIN(btree, b, ctree);
++ LOOP_WALK_BEGIN(ctree, c, dtree);
++ for (d = 0; d < 256; d++) {
++ if (dtree->expires[d]) {
++ DP("gc: %u %u %u %u: expires %lu jiffies %lu",
++ a, b, c, d,
++ dtree->expires[d], jiffies);
++ if (map->timeout
++ && time_before(dtree->expires[d], jiffies)) {
++ dtree->expires[d] = 0;
++ map->elements--;
++ } else
++ k = 1;
++ }
++ }
++ if (k == 0) {
++ DP("gc: %s: leaf %u %u %u empty",
++ set->name, a, b, c);
++ kmem_cache_free(leaf_cachep, dtree);
++ ctree->tree[c] = NULL;
++ } else {
++ DP("gc: %s: leaf %u %u %u not empty",
++ set->name, a, b, c);
++ j = 1;
++ k = 0;
++ }
++ LOOP_WALK_END;
++ if (j == 0) {
++ DP("gc: %s: branch %u %u empty",
++ set->name, a, b);
++ kmem_cache_free(branch_cachep, ctree);
++ btree->tree[b] = NULL;
++ } else {
++ DP("gc: %s: branch %u %u not empty",
++ set->name, a, b);
++ i = 1;
++ j = k = 0;
++ }
++ LOOP_WALK_END;
++ if (i == 0) {
++ DP("gc: %s: branch %u empty",
++ set->name, a);
++ kmem_cache_free(branch_cachep, btree);
++ map->tree[a] = NULL;
++ } else {
++ DP("gc: %s: branch %u not empty",
++ set->name, a);
++ i = j = k = 0;
++ }
++ LOOP_WALK_END;
++ write_unlock_bh(&set->lock);
++
++ map->gc.expires = jiffies + map->gc_interval * HZ;
++ add_timer(&map->gc);
++}
++
++static inline void init_gc_timer(struct ip_set *set)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++
++ /* Even if there is no timeout for the entries,
++ * we still have to call gc because delete
++ * do not clean up empty branches */
++ map->gc_interval = IPTREE_GC_TIME;
++ init_timer(&map->gc);
++ map->gc.data = (unsigned long) set;
++ map->gc.function = ip_tree_gc;
++ map->gc.expires = jiffies + map->gc_interval * HZ;
++ add_timer(&map->gc);
++}
++
++static int create(struct ip_set *set, const void *data, size_t size)
++{
++ struct ip_set_req_iptree_create *req =
++ (struct ip_set_req_iptree_create *) data;
++ struct ip_set_iptree *map;
++
++ if (size != sizeof(struct ip_set_req_iptree_create)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_iptree_create),
++ size);
++ return -EINVAL;
++ }
++
++ map = kmalloc(sizeof(struct ip_set_iptree), GFP_KERNEL);
++ if (!map) {
++ DP("out of memory for %d bytes",
++ sizeof(struct ip_set_iptree));
++ return -ENOMEM;
++ }
++ memset(map, 0, sizeof(*map));
++ map->timeout = req->timeout;
++ map->elements = 0;
++ set->data = map;
++
++ init_gc_timer(set);
++
++ return 0;
++}
++
++static void __flush(struct ip_set_iptree *map)
++{
++ struct ip_set_iptreeb *btree;
++ struct ip_set_iptreec *ctree;
++ struct ip_set_iptreed *dtree;
++ unsigned int a,b,c;
++
++ LOOP_WALK_BEGIN(map, a, btree);
++ LOOP_WALK_BEGIN(btree, b, ctree);
++ LOOP_WALK_BEGIN(ctree, c, dtree);
++ kmem_cache_free(leaf_cachep, dtree);
++ LOOP_WALK_END;
++ kmem_cache_free(branch_cachep, ctree);
++ LOOP_WALK_END;
++ kmem_cache_free(branch_cachep, btree);
++ LOOP_WALK_END;
++ map->elements = 0;
++}
++
++static void destroy(struct ip_set *set)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++
++ /* gc might be running */
++ while (!del_timer(&map->gc))
++ msleep(IPTREE_DESTROY_SLEEP);
++ __flush(map);
++ kfree(map);
++ set->data = NULL;
++}
++
++static void flush(struct ip_set *set)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++ unsigned int timeout = map->timeout;
++
++ /* gc might be running */
++ while (!del_timer(&map->gc))
++ msleep(IPTREE_DESTROY_SLEEP);
++ __flush(map);
++ memset(map, 0, sizeof(*map));
++ map->timeout = timeout;
++
++ init_gc_timer(set);
++}
++
++static void list_header(const struct ip_set *set, void *data)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++ struct ip_set_req_iptree_create *header =
++ (struct ip_set_req_iptree_create *) data;
++
++ header->timeout = map->timeout;
++}
++
++static int list_members_size(const struct ip_set *set)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++ struct ip_set_iptreeb *btree;
++ struct ip_set_iptreec *ctree;
++ struct ip_set_iptreed *dtree;
++ unsigned int a,b,c,d;
++ unsigned int count = 0;
++
++ LOOP_WALK_BEGIN(map, a, btree);
++ LOOP_WALK_BEGIN(btree, b, ctree);
++ LOOP_WALK_BEGIN(ctree, c, dtree);
++ for (d = 0; d < 256; d++) {
++ if (dtree->expires[d]
++ && (!map->timeout || time_after(dtree->expires[d], jiffies)))
++ count++;
++ }
++ LOOP_WALK_END;
++ LOOP_WALK_END;
++ LOOP_WALK_END;
++
++ DP("members %u", count);
++ return (count * sizeof(struct ip_set_req_iptree));
++}
++
++static void list_members(const struct ip_set *set, void *data)
++{
++ struct ip_set_iptree *map = (struct ip_set_iptree *) set->data;
++ struct ip_set_iptreeb *btree;
++ struct ip_set_iptreec *ctree;
++ struct ip_set_iptreed *dtree;
++ unsigned int a,b,c,d;
++ size_t offset = 0;
++ struct ip_set_req_iptree *entry;
++
++ LOOP_WALK_BEGIN(map, a, btree);
++ LOOP_WALK_BEGIN(btree, b, ctree);
++ LOOP_WALK_BEGIN(ctree, c, dtree);
++ for (d = 0; d < 256; d++) {
++ if (dtree->expires[d]
++ && (!map->timeout || time_after(dtree->expires[d], jiffies))) {
++ entry = (struct ip_set_req_iptree *)(data + offset);
++ entry->ip = ((a << 24) | (b << 16) | (c << 8) | d);
++ entry->timeout = !map->timeout ? 0
++ : (dtree->expires[d] - jiffies)/HZ;
++ offset += sizeof(struct ip_set_req_iptree);
++ }
++ }
++ LOOP_WALK_END;
++ LOOP_WALK_END;
++ LOOP_WALK_END;
++}
++
++static struct ip_set_type ip_set_iptree = {
++ .typename = SETTYPE_NAME,
++ .features = IPSET_TYPE_IP | IPSET_DATA_SINGLE,
++ .protocol_version = IP_SET_PROTOCOL_VERSION,
++ .create = &create,
++ .destroy = &destroy,
++ .flush = &flush,
++ .reqsize = sizeof(struct ip_set_req_iptree),
++ .addip = &addip,
++ .addip_kernel = &addip_kernel,
++ .delip = &delip,
++ .delip_kernel = &delip_kernel,
++ .testip = &testip,
++ .testip_kernel = &testip_kernel,
++ .header_size = sizeof(struct ip_set_req_iptree_create),
++ .list_header = &list_header,
++ .list_members_size = &list_members_size,
++ .list_members = &list_members,
++ .me = THIS_MODULE,
++};
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
++MODULE_DESCRIPTION("iptree type of IP sets");
++module_param(limit, int, 0600);
++MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets");
++
++static int __init init(void)
++{
++ int ret;
++
++ branch_cachep = kmem_cache_create("ip_set_iptreeb",
++ sizeof(struct ip_set_iptreeb),
++ 0, 0, NULL, NULL);
++ if (!branch_cachep) {
++ printk(KERN_ERR "Unable to create ip_set_iptreeb slab cache\n");
++ ret = -ENOMEM;
++ goto out;
++ }
++ leaf_cachep = kmem_cache_create("ip_set_iptreed",
++ sizeof(struct ip_set_iptreed),
++ 0, 0, NULL, NULL);
++ if (!leaf_cachep) {
++ printk(KERN_ERR "Unable to create ip_set_iptreed slab cache\n");
++ ret = -ENOMEM;
++ goto free_branch;
++ }
++ ret = ip_set_register_set_type(&ip_set_iptree);
++ if (ret == 0)
++ goto out;
++
++ kmem_cache_destroy(leaf_cachep);
++ free_branch:
++ kmem_cache_destroy(branch_cachep);
++ out:
++ return ret;
++}
++
++static void __exit fini(void)
++{
++ /* FIXME: possible race with ip_set_create() */
++ ip_set_unregister_set_type(&ip_set_iptree);
++ kmem_cache_destroy(leaf_cachep);
++ kmem_cache_destroy(branch_cachep);
++}
++
++module_init(init);
++module_exit(fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_macipmap.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_macipmap.c 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,353 @@
++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
++ * Patrick Schaaf <bof@bof.de>
++ * Martin Josefsson <gandalf@wlug.westbo.se>
++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* Kernel module implementing an IP set type: the macipmap type */
++
++#include <linux/module.h>
++#include <linux/ip.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ip_set.h>
++#include <linux/errno.h>
++#include <asm/uaccess.h>
++#include <asm/bitops.h>
++#include <linux/spinlock.h>
++#include <linux/if_ether.h>
++#include <linux/vmalloc.h>
++
++#include <linux/netfilter_ipv4/ip_set_malloc.h>
++#include <linux/netfilter_ipv4/ip_set_macipmap.h>
++
++static int
++testip(struct ip_set *set, const void *data, size_t size, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_macipmap *map = (struct ip_set_macipmap *) set->data;
++ struct ip_set_macip *table = (struct ip_set_macip *) map->members;
++ struct ip_set_req_macipmap *req = (struct ip_set_req_macipmap *) data;
++
++ if (size != sizeof(struct ip_set_req_macipmap)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_macipmap),
++ size);
++ return -EINVAL;
++ }
++
++ if (req->ip < map->first_ip || req->ip > map->last_ip)
++ return -ERANGE;
++
++ *hash_ip = req->ip;
++ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u",
++ set->name, HIPQUAD(req->ip), HIPQUAD(*hash_ip));
++ if (test_bit(IPSET_MACIP_ISSET,
++ (void *) &table[req->ip - map->first_ip].flags)) {
++ return (memcmp(req->ethernet,
++ &table[req->ip - map->first_ip].ethernet,
++ ETH_ALEN) == 0);
++ } else {
++ return (map->flags & IPSET_MACIP_MATCHUNSET ? 1 : 0);
++ }
++}
++
++static int
++testip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ struct ip_set_macipmap *map =
++ (struct ip_set_macipmap *) set->data;
++ struct ip_set_macip *table =
++ (struct ip_set_macip *) map->members;
++ ip_set_ip_t ip;
++
++ ip = ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr);
++ DP("flag: %s src: %u.%u.%u.%u dst: %u.%u.%u.%u",
++ flags[index] & IPSET_SRC ? "SRC" : "DST",
++ NIPQUAD(ip_hdr(skb)->saddr),
++ NIPQUAD(ip_hdr(skb)->daddr));
++
++ if (ip < map->first_ip || ip > map->last_ip)
++ return 0;
++
++ *hash_ip = ip;
++ DP("set: %s, ip:%u.%u.%u.%u, %u.%u.%u.%u",
++ set->name, HIPQUAD(ip), HIPQUAD(*hash_ip));
++ if (test_bit(IPSET_MACIP_ISSET,
++ (void *) &table[ip - map->first_ip].flags)) {
++ /* Is mac pointer valid?
++ * If so, compare... */
++ return (skb_mac_header(skb) >= skb->head
++ && (skb_mac_header(skb) + ETH_HLEN) <= skb->data
++ && (memcmp(eth_hdr(skb)->h_source,
++ &table[ip - map->first_ip].ethernet,
++ ETH_ALEN) == 0));
++ } else {
++ return (map->flags & IPSET_MACIP_MATCHUNSET ? 1 : 0);
++ }
++}
++
++/* returns 0 on success */
++static inline int
++__addip(struct ip_set *set,
++ ip_set_ip_t ip, unsigned char *ethernet, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_macipmap *map =
++ (struct ip_set_macipmap *) set->data;
++ struct ip_set_macip *table =
++ (struct ip_set_macip *) map->members;
++
++ if (ip < map->first_ip || ip > map->last_ip)
++ return -ERANGE;
++ if (test_and_set_bit(IPSET_MACIP_ISSET,
++ (void *) &table[ip - map->first_ip].flags))
++ return -EEXIST;
++
++ *hash_ip = ip;
++ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip));
++ memcpy(&table[ip - map->first_ip].ethernet, ethernet, ETH_ALEN);
++ return 0;
++}
++
++static int
++addip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_macipmap *req =
++ (struct ip_set_req_macipmap *) data;
++
++ if (size != sizeof(struct ip_set_req_macipmap)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_macipmap),
++ size);
++ return -EINVAL;
++ }
++ return __addip(set, req->ip, req->ethernet, hash_ip);
++}
++
++static int
++addip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ ip_set_ip_t ip;
++
++ ip = ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr);
++
++ if (!(skb_mac_header(skb) >= skb->head
++ && (skb_mac_header(skb) + ETH_HLEN) <= skb->data))
++ return -EINVAL;
++
++ return __addip(set, ip, eth_hdr(skb)->h_source, hash_ip);
++}
++
++static inline int
++__delip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_macipmap *map =
++ (struct ip_set_macipmap *) set->data;
++ struct ip_set_macip *table =
++ (struct ip_set_macip *) map->members;
++
++ if (ip < map->first_ip || ip > map->last_ip)
++ return -ERANGE;
++ if (!test_and_clear_bit(IPSET_MACIP_ISSET,
++ (void *)&table[ip - map->first_ip].flags))
++ return -EEXIST;
++
++ *hash_ip = ip;
++ DP("%u.%u.%u.%u, %u.%u.%u.%u", HIPQUAD(ip), HIPQUAD(*hash_ip));
++ return 0;
++}
++
++static int
++delip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_macipmap *req =
++ (struct ip_set_req_macipmap *) data;
++
++ if (size != sizeof(struct ip_set_req_macipmap)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_macipmap),
++ size);
++ return -EINVAL;
++ }
++ return __delip(set, req->ip, hash_ip);
++}
++
++static int
++delip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ return __delip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ hash_ip);
++}
++
++static inline size_t members_size(ip_set_id_t from, ip_set_id_t to)
++{
++ return (size_t)((to - from + 1) * sizeof(struct ip_set_macip));
++}
++
++static int create(struct ip_set *set, const void *data, size_t size)
++{
++ int newbytes;
++ struct ip_set_req_macipmap_create *req =
++ (struct ip_set_req_macipmap_create *) data;
++ struct ip_set_macipmap *map;
++
++ if (size != sizeof(struct ip_set_req_macipmap_create)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_macipmap_create),
++ size);
++ return -EINVAL;
++ }
++
++ DP("from %u.%u.%u.%u to %u.%u.%u.%u",
++ HIPQUAD(req->from), HIPQUAD(req->to));
++
++ if (req->from > req->to) {
++ DP("bad ip range");
++ return -ENOEXEC;
++ }
++
++ if (req->to - req->from > MAX_RANGE) {
++ ip_set_printk("range too big (max %d addresses)",
++ MAX_RANGE+1);
++ return -ENOEXEC;
++ }
++
++ map = kmalloc(sizeof(struct ip_set_macipmap), GFP_KERNEL);
++ if (!map) {
++ DP("out of memory for %d bytes",
++ sizeof(struct ip_set_macipmap));
++ return -ENOMEM;
++ }
++ map->flags = req->flags;
++ map->first_ip = req->from;
++ map->last_ip = req->to;
++ newbytes = members_size(map->first_ip, map->last_ip);
++ map->members = ip_set_malloc(newbytes);
++ DP("members: %u %p", newbytes, map->members);
++ if (!map->members) {
++ DP("out of memory for %d bytes", newbytes);
++ kfree(map);
++ return -ENOMEM;
++ }
++ memset(map->members, 0, newbytes);
++
++ set->data = map;
++ return 0;
++}
++
++static void destroy(struct ip_set *set)
++{
++ struct ip_set_macipmap *map =
++ (struct ip_set_macipmap *) set->data;
++
++ ip_set_free(map->members, members_size(map->first_ip, map->last_ip));
++ kfree(map);
++
++ set->data = NULL;
++}
++
++static void flush(struct ip_set *set)
++{
++ struct ip_set_macipmap *map =
++ (struct ip_set_macipmap *) set->data;
++ memset(map->members, 0, members_size(map->first_ip, map->last_ip));
++}
++
++static void list_header(const struct ip_set *set, void *data)
++{
++ struct ip_set_macipmap *map =
++ (struct ip_set_macipmap *) set->data;
++ struct ip_set_req_macipmap_create *header =
++ (struct ip_set_req_macipmap_create *) data;
++
++ DP("list_header %x %x %u", map->first_ip, map->last_ip,
++ map->flags);
++
++ header->from = map->first_ip;
++ header->to = map->last_ip;
++ header->flags = map->flags;
++}
++
++static int list_members_size(const struct ip_set *set)
++{
++ struct ip_set_macipmap *map =
++ (struct ip_set_macipmap *) set->data;
++
++ DP("%u", members_size(map->first_ip, map->last_ip));
++ return members_size(map->first_ip, map->last_ip);
++}
++
++static void list_members(const struct ip_set *set, void *data)
++{
++ struct ip_set_macipmap *map =
++ (struct ip_set_macipmap *) set->data;
++
++ int bytes = members_size(map->first_ip, map->last_ip);
++
++ DP("members: %u %p", bytes, map->members);
++ memcpy(data, map->members, bytes);
++}
++
++static struct ip_set_type ip_set_macipmap = {
++ .typename = SETTYPE_NAME,
++ .features = IPSET_TYPE_IP | IPSET_DATA_SINGLE,
++ .protocol_version = IP_SET_PROTOCOL_VERSION,
++ .create = &create,
++ .destroy = &destroy,
++ .flush = &flush,
++ .reqsize = sizeof(struct ip_set_req_macipmap),
++ .addip = &addip,
++ .addip_kernel = &addip_kernel,
++ .delip = &delip,
++ .delip_kernel = &delip_kernel,
++ .testip = &testip,
++ .testip_kernel = &testip_kernel,
++ .header_size = sizeof(struct ip_set_req_macipmap_create),
++ .list_header = &list_header,
++ .list_members_size = &list_members_size,
++ .list_members = &list_members,
++ .me = THIS_MODULE,
++};
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
++MODULE_DESCRIPTION("macipmap type of IP sets");
++
++static int __init init(void)
++{
++ init_max_malloc_size();
++ return ip_set_register_set_type(&ip_set_macipmap);
++}
++
++static void __exit fini(void)
++{
++ /* FIXME: possible race with ip_set_create() */
++ ip_set_unregister_set_type(&ip_set_macipmap);
++}
++
++module_init(init);
++module_exit(fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_nethash.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_nethash.c 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,481 @@
++/* Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* Kernel module implementing a cidr nethash set */
++
++#include <linux/module.h>
++#include <linux/ip.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ip_set.h>
++#include <linux/errno.h>
++#include <asm/uaccess.h>
++#include <asm/bitops.h>
++#include <linux/spinlock.h>
++#include <linux/vmalloc.h>
++#include <linux/random.h>
++#include <linux/jhash.h>
++
++#include <net/ip.h>
++
++#include <linux/netfilter_ipv4/ip_set_malloc.h>
++#include <linux/netfilter_ipv4/ip_set_nethash.h>
++
++static int limit = MAX_RANGE;
++
++static inline __u32
++jhash_ip(const struct ip_set_nethash *map, uint16_t i, ip_set_ip_t ip)
++{
++ return jhash_1word(ip, *(((uint32_t *) map->initval) + i));
++}
++
++static inline __u32
++hash_id_cidr(struct ip_set_nethash *map,
++ ip_set_ip_t ip,
++ unsigned char cidr,
++ ip_set_ip_t *hash_ip)
++{
++ __u32 id;
++ u_int16_t i;
++ ip_set_ip_t *elem;
++
++ *hash_ip = pack(ip, cidr);
++
++ for (i = 0; i < map->probes; i++) {
++ id = jhash_ip(map, i, *hash_ip) % map->hashsize;
++ DP("hash key: %u", id);
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
++ if (*elem == *hash_ip)
++ return id;
++ }
++ return UINT_MAX;
++}
++
++static inline __u32
++hash_id(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data;
++ __u32 id = UINT_MAX;
++ int i;
++
++ for (i = 0; i < 30 && map->cidr[i]; i++) {
++ id = hash_id_cidr(map, ip, map->cidr[i], hash_ip);
++ if (id != UINT_MAX)
++ break;
++ }
++ return id;
++}
++
++static inline int
++__testip_cidr(struct ip_set *set, ip_set_ip_t ip, unsigned char cidr,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data;
++
++ return (ip && hash_id_cidr(map, ip, cidr, hash_ip) != UINT_MAX);
++}
++
++static inline int
++__testip(struct ip_set *set, ip_set_ip_t ip, ip_set_ip_t *hash_ip)
++{
++ return (ip && hash_id(set, ip, hash_ip) != UINT_MAX);
++}
++
++static int
++testip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_nethash *req =
++ (struct ip_set_req_nethash *) data;
++
++ if (size != sizeof(struct ip_set_req_nethash)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_nethash),
++ size);
++ return -EINVAL;
++ }
++ return (req->cidr == 32 ? __testip(set, req->ip, hash_ip)
++ : __testip_cidr(set, req->ip, req->cidr, hash_ip));
++}
++
++static int
++testip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ return __testip(set,
++ ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr),
++ hash_ip);
++}
++
++static inline int
++__addip_base(struct ip_set_nethash *map, ip_set_ip_t ip)
++{
++ __u32 probe;
++ u_int16_t i;
++ ip_set_ip_t *elem;
++
++ for (i = 0; i < map->probes; i++) {
++ probe = jhash_ip(map, i, ip) % map->hashsize;
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, probe);
++ if (*elem == ip)
++ return -EEXIST;
++ if (!*elem) {
++ *elem = ip;
++ map->elements++;
++ return 0;
++ }
++ }
++ /* Trigger rehashing */
++ return -EAGAIN;
++}
++
++static inline int
++__addip(struct ip_set_nethash *map, ip_set_ip_t ip, unsigned char cidr,
++ ip_set_ip_t *hash_ip)
++{
++ if (!ip || map->elements > limit)
++ return -ERANGE;
++
++ *hash_ip = pack(ip, cidr);
++ DP("%u.%u.%u.%u/%u, %u.%u.%u.%u", HIPQUAD(ip), cidr, HIPQUAD(*hash_ip));
++
++ return __addip_base(map, *hash_ip);
++}
++
++static void
++update_cidr_sizes(struct ip_set_nethash *map, unsigned char cidr)
++{
++ unsigned char next;
++ int i;
++
++ for (i = 0; i < 30 && map->cidr[i]; i++) {
++ if (map->cidr[i] == cidr) {
++ return;
++ } else if (map->cidr[i] < cidr) {
++ next = map->cidr[i];
++ map->cidr[i] = cidr;
++ cidr = next;
++ }
++ }
++ if (i < 30)
++ map->cidr[i] = cidr;
++}
++
++static int
++addip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_nethash *req =
++ (struct ip_set_req_nethash *) data;
++ int ret;
++
++ if (size != sizeof(struct ip_set_req_nethash)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_nethash),
++ size);
++ return -EINVAL;
++ }
++ ret = __addip((struct ip_set_nethash *) set->data,
++ req->ip, req->cidr, hash_ip);
++
++ if (ret == 0)
++ update_cidr_sizes((struct ip_set_nethash *) set->data,
++ req->cidr);
++
++ return ret;
++}
++
++static int
++addip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data;
++ int ret = -ERANGE;
++ ip_set_ip_t ip = ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr);
++
++ if (map->cidr[0])
++ ret = __addip(map, ip, map->cidr[0], hash_ip);
++
++ return ret;
++}
++
++static int retry(struct ip_set *set)
++{
++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data;
++ ip_set_ip_t *elem;
++ void *members;
++ u_int32_t i, hashsize = map->hashsize;
++ int res;
++ struct ip_set_nethash *tmp;
++
++ if (map->resize == 0)
++ return -ERANGE;
++
++ again:
++ res = 0;
++
++ /* Calculate new parameters */
++ hashsize += (hashsize * map->resize)/100;
++ if (hashsize == map->hashsize)
++ hashsize++;
++
++ ip_set_printk("rehashing of set %s triggered: "
++ "hashsize grows from %u to %u",
++ set->name, map->hashsize, hashsize);
++
++ tmp = kmalloc(sizeof(struct ip_set_nethash)
++ + map->probes * sizeof(uint32_t), GFP_ATOMIC);
++ if (!tmp) {
++ DP("out of memory for %d bytes",
++ sizeof(struct ip_set_nethash)
++ + map->probes * sizeof(uint32_t));
++ return -ENOMEM;
++ }
++ tmp->members = harray_malloc(hashsize, sizeof(ip_set_ip_t), GFP_ATOMIC);
++ if (!tmp->members) {
++ DP("out of memory for %d bytes", hashsize * sizeof(ip_set_ip_t));
++ kfree(tmp);
++ return -ENOMEM;
++ }
++ tmp->hashsize = hashsize;
++ tmp->elements = 0;
++ tmp->probes = map->probes;
++ tmp->resize = map->resize;
++ memcpy(tmp->initval, map->initval, map->probes * sizeof(uint32_t));
++ memcpy(tmp->cidr, map->cidr, 30 * sizeof(unsigned char));
++
++ write_lock_bh(&set->lock);
++ map = (struct ip_set_nethash *) set->data; /* Play safe */
++ for (i = 0; i < map->hashsize && res == 0; i++) {
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i);
++ if (*elem)
++ res = __addip_base(tmp, *elem);
++ }
++ if (res) {
++ /* Failure, try again */
++ write_unlock_bh(&set->lock);
++ harray_free(tmp->members);
++ kfree(tmp);
++ goto again;
++ }
++
++ /* Success at resizing! */
++ members = map->members;
++
++ map->hashsize = tmp->hashsize;
++ map->members = tmp->members;
++ write_unlock_bh(&set->lock);
++
++ harray_free(members);
++ kfree(tmp);
++
++ return 0;
++}
++
++static inline int
++__delip(struct ip_set_nethash *map, ip_set_ip_t ip, unsigned char cidr,
++ ip_set_ip_t *hash_ip)
++{
++ ip_set_ip_t id, *elem;
++
++ if (!ip)
++ return -ERANGE;
++
++ id = hash_id_cidr(map, ip, cidr, hash_ip);
++ if (id == UINT_MAX)
++ return -EEXIST;
++
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, id);
++ *elem = 0;
++ map->elements--;
++ return 0;
++}
++
++static int
++delip(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_ip)
++{
++ struct ip_set_req_nethash *req =
++ (struct ip_set_req_nethash *) data;
++
++ if (size != sizeof(struct ip_set_req_nethash)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_nethash),
++ size);
++ return -EINVAL;
++ }
++ /* TODO: no garbage collection in map->cidr */
++ return __delip((struct ip_set_nethash *) set->data,
++ req->ip, req->cidr, hash_ip);
++}
++
++static int
++delip_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_ip,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data;
++ int ret = -ERANGE;
++ ip_set_ip_t ip = ntohl(flags[index] & IPSET_SRC
++ ? ip_hdr(skb)->saddr
++ : ip_hdr(skb)->daddr);
++
++ if (map->cidr[0])
++ ret = __delip(map, ip, map->cidr[0], hash_ip);
++
++ return ret;
++}
++
++static int create(struct ip_set *set, const void *data, size_t size)
++{
++ struct ip_set_req_nethash_create *req =
++ (struct ip_set_req_nethash_create *) data;
++ struct ip_set_nethash *map;
++ uint16_t i;
++
++ if (size != sizeof(struct ip_set_req_nethash_create)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_nethash_create),
++ size);
++ return -EINVAL;
++ }
++
++ if (req->hashsize < 1) {
++ ip_set_printk("hashsize too small");
++ return -ENOEXEC;
++ }
++ if (req->probes < 1) {
++ ip_set_printk("probes too small");
++ return -ENOEXEC;
++ }
++
++ map = kmalloc(sizeof(struct ip_set_nethash)
++ + req->probes * sizeof(uint32_t), GFP_KERNEL);
++ if (!map) {
++ DP("out of memory for %d bytes",
++ sizeof(struct ip_set_nethash)
++ + req->probes * sizeof(uint32_t));
++ return -ENOMEM;
++ }
++ for (i = 0; i < req->probes; i++)
++ get_random_bytes(((uint32_t *) map->initval)+i, 4);
++ map->elements = 0;
++ map->hashsize = req->hashsize;
++ map->probes = req->probes;
++ map->resize = req->resize;
++ memset(map->cidr, 0, 30 * sizeof(unsigned char));
++ map->members = harray_malloc(map->hashsize, sizeof(ip_set_ip_t), GFP_KERNEL);
++ if (!map->members) {
++ DP("out of memory for %d bytes", map->hashsize * sizeof(ip_set_ip_t));
++ kfree(map);
++ return -ENOMEM;
++ }
++
++ set->data = map;
++ return 0;
++}
++
++static void destroy(struct ip_set *set)
++{
++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data;
++
++ harray_free(map->members);
++ kfree(map);
++
++ set->data = NULL;
++}
++
++static void flush(struct ip_set *set)
++{
++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data;
++ harray_flush(map->members, map->hashsize, sizeof(ip_set_ip_t));
++ memset(map->cidr, 0, 30 * sizeof(unsigned char));
++ map->elements = 0;
++}
++
++static void list_header(const struct ip_set *set, void *data)
++{
++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data;
++ struct ip_set_req_nethash_create *header =
++ (struct ip_set_req_nethash_create *) data;
++
++ header->hashsize = map->hashsize;
++ header->probes = map->probes;
++ header->resize = map->resize;
++}
++
++static int list_members_size(const struct ip_set *set)
++{
++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data;
++
++ return (map->hashsize * sizeof(ip_set_ip_t));
++}
++
++static void list_members(const struct ip_set *set, void *data)
++{
++ struct ip_set_nethash *map = (struct ip_set_nethash *) set->data;
++ ip_set_ip_t i, *elem;
++
++ for (i = 0; i < map->hashsize; i++) {
++ elem = HARRAY_ELEM(map->members, ip_set_ip_t *, i);
++ ((ip_set_ip_t *)data)[i] = *elem;
++ }
++}
++
++static struct ip_set_type ip_set_nethash = {
++ .typename = SETTYPE_NAME,
++ .features = IPSET_TYPE_IP | IPSET_DATA_SINGLE,
++ .protocol_version = IP_SET_PROTOCOL_VERSION,
++ .create = &create,
++ .destroy = &destroy,
++ .flush = &flush,
++ .reqsize = sizeof(struct ip_set_req_nethash),
++ .addip = &addip,
++ .addip_kernel = &addip_kernel,
++ .retry = &retry,
++ .delip = &delip,
++ .delip_kernel = &delip_kernel,
++ .testip = &testip,
++ .testip_kernel = &testip_kernel,
++ .header_size = sizeof(struct ip_set_req_nethash_create),
++ .list_header = &list_header,
++ .list_members_size = &list_members_size,
++ .list_members = &list_members,
++ .me = THIS_MODULE,
++};
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
++MODULE_DESCRIPTION("nethash type of IP sets");
++module_param(limit, int, 0600);
++MODULE_PARM_DESC(limit, "maximal number of elements stored in the sets");
++
++static int __init init(void)
++{
++ return ip_set_register_set_type(&ip_set_nethash);
++}
++
++static void __exit fini(void)
++{
++ /* FIXME: possible race with ip_set_create() */
++ ip_set_unregister_set_type(&ip_set_nethash);
++}
++
++module_init(init);
++module_exit(fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_portmap.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ip_set_portmap.c 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,334 @@
++/* Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* Kernel module implementing a port set type as a bitmap */
++
++#include <linux/module.h>
++#include <linux/ip.h>
++#include <linux/tcp.h>
++#include <linux/udp.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ip_set.h>
++#include <linux/errno.h>
++#include <asm/uaccess.h>
++#include <asm/bitops.h>
++#include <linux/spinlock.h>
++
++#include <net/ip.h>
++
++#include <linux/netfilter_ipv4/ip_set_portmap.h>
++
++/* We must handle non-linear skbs */
++static inline ip_set_ip_t
++get_port(const struct sk_buff *skb, u_int32_t flags)
++{
++ struct iphdr *iph = ip_hdr(skb);
++ u_int16_t offset = ntohs(iph->frag_off) & IP_OFFSET;
++
++ switch (iph->protocol) {
++ case IPPROTO_TCP: {
++ struct tcphdr tcph;
++
++ /* See comments at tcp_match in ip_tables.c */
++ if (offset)
++ return INVALID_PORT;
++
++ if (skb_copy_bits(skb, ip_hdr(skb)->ihl*4, &tcph, sizeof(tcph)) < 0)
++ /* No choice either */
++ return INVALID_PORT;
++
++ return ntohs(flags & IPSET_SRC ?
++ tcph.source : tcph.dest);
++ }
++ case IPPROTO_UDP: {
++ struct udphdr udph;
++
++ if (offset)
++ return INVALID_PORT;
++
++ if (skb_copy_bits(skb, ip_hdr(skb)->ihl*4, &udph, sizeof(udph)) < 0)
++ /* No choice either */
++ return INVALID_PORT;
++
++ return ntohs(flags & IPSET_SRC ?
++ udph.source : udph.dest);
++ }
++ default:
++ return INVALID_PORT;
++ }
++}
++
++static inline int
++__testport(struct ip_set *set, ip_set_ip_t port, ip_set_ip_t *hash_port)
++{
++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data;
++
++ if (port < map->first_port || port > map->last_port)
++ return -ERANGE;
++
++ *hash_port = port;
++ DP("set: %s, port:%u, %u", set->name, port, *hash_port);
++ return !!test_bit(port - map->first_port, map->members);
++}
++
++static int
++testport(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_port)
++{
++ struct ip_set_req_portmap *req =
++ (struct ip_set_req_portmap *) data;
++
++ if (size != sizeof(struct ip_set_req_portmap)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_portmap),
++ size);
++ return -EINVAL;
++ }
++ return __testport(set, req->port, hash_port);
++}
++
++static int
++testport_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_port,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ int res;
++ ip_set_ip_t port = get_port(skb, flags[index]);
++
++ DP("flag %s port %u", flags[index] & IPSET_SRC ? "SRC" : "DST", port);
++ if (port == INVALID_PORT)
++ return 0;
++
++ res = __testport(set, port, hash_port);
++
++ return (res < 0 ? 0 : res);
++}
++
++static inline int
++__addport(struct ip_set *set, ip_set_ip_t port, ip_set_ip_t *hash_port)
++{
++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data;
++
++ if (port < map->first_port || port > map->last_port)
++ return -ERANGE;
++ if (test_and_set_bit(port - map->first_port, map->members))
++ return -EEXIST;
++
++ *hash_port = port;
++ DP("port %u", port);
++ return 0;
++}
++
++static int
++addport(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_port)
++{
++ struct ip_set_req_portmap *req =
++ (struct ip_set_req_portmap *) data;
++
++ if (size != sizeof(struct ip_set_req_portmap)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_portmap),
++ size);
++ return -EINVAL;
++ }
++ return __addport(set, req->port, hash_port);
++}
++
++static int
++addport_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_port,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ ip_set_ip_t port = get_port(skb, flags[index]);
++
++ if (port == INVALID_PORT)
++ return -EINVAL;
++
++ return __addport(set, port, hash_port);
++}
++
++static inline int
++__delport(struct ip_set *set, ip_set_ip_t port, ip_set_ip_t *hash_port)
++{
++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data;
++
++ if (port < map->first_port || port > map->last_port)
++ return -ERANGE;
++ if (!test_and_clear_bit(port - map->first_port, map->members))
++ return -EEXIST;
++
++ *hash_port = port;
++ DP("port %u", port);
++ return 0;
++}
++
++static int
++delport(struct ip_set *set, const void *data, size_t size,
++ ip_set_ip_t *hash_port)
++{
++ struct ip_set_req_portmap *req =
++ (struct ip_set_req_portmap *) data;
++
++ if (size != sizeof(struct ip_set_req_portmap)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_portmap),
++ size);
++ return -EINVAL;
++ }
++ return __delport(set, req->port, hash_port);
++}
++
++static int
++delport_kernel(struct ip_set *set,
++ const struct sk_buff *skb,
++ ip_set_ip_t *hash_port,
++ const u_int32_t *flags,
++ unsigned char index)
++{
++ ip_set_ip_t port = get_port(skb, flags[index]);
++
++ if (port == INVALID_PORT)
++ return -EINVAL;
++
++ return __delport(set, port, hash_port);
++}
++
++static int create(struct ip_set *set, const void *data, size_t size)
++{
++ int newbytes;
++ struct ip_set_req_portmap_create *req =
++ (struct ip_set_req_portmap_create *) data;
++ struct ip_set_portmap *map;
++
++ if (size != sizeof(struct ip_set_req_portmap_create)) {
++ ip_set_printk("data length wrong (want %zu, have %zu)",
++ sizeof(struct ip_set_req_portmap_create),
++ size);
++ return -EINVAL;
++ }
++
++ DP("from %u to %u", req->from, req->to);
++
++ if (req->from > req->to) {
++ DP("bad port range");
++ return -ENOEXEC;
++ }
++
++ if (req->to - req->from > MAX_RANGE) {
++ ip_set_printk("range too big (max %d ports)",
++ MAX_RANGE+1);
++ return -ENOEXEC;
++ }
++
++ map = kmalloc(sizeof(struct ip_set_portmap), GFP_KERNEL);
++ if (!map) {
++ DP("out of memory for %d bytes",
++ sizeof(struct ip_set_portmap));
++ return -ENOMEM;
++ }
++ map->first_port = req->from;
++ map->last_port = req->to;
++ newbytes = bitmap_bytes(req->from, req->to);
++ map->members = kmalloc(newbytes, GFP_KERNEL);
++ if (!map->members) {
++ DP("out of memory for %d bytes", newbytes);
++ kfree(map);
++ return -ENOMEM;
++ }
++ memset(map->members, 0, newbytes);
++
++ set->data = map;
++ return 0;
++}
++
++static void destroy(struct ip_set *set)
++{
++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data;
++
++ kfree(map->members);
++ kfree(map);
++
++ set->data = NULL;
++}
++
++static void flush(struct ip_set *set)
++{
++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data;
++ memset(map->members, 0, bitmap_bytes(map->first_port, map->last_port));
++}
++
++static void list_header(const struct ip_set *set, void *data)
++{
++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data;
++ struct ip_set_req_portmap_create *header =
++ (struct ip_set_req_portmap_create *) data;
++
++ DP("list_header %u %u", map->first_port, map->last_port);
++
++ header->from = map->first_port;
++ header->to = map->last_port;
++}
++
++static int list_members_size(const struct ip_set *set)
++{
++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data;
++
++ return bitmap_bytes(map->first_port, map->last_port);
++}
++
++static void list_members(const struct ip_set *set, void *data)
++{
++ struct ip_set_portmap *map = (struct ip_set_portmap *) set->data;
++ int bytes = bitmap_bytes(map->first_port, map->last_port);
++
++ memcpy(data, map->members, bytes);
++}
++
++static struct ip_set_type ip_set_portmap = {
++ .typename = SETTYPE_NAME,
++ .features = IPSET_TYPE_PORT | IPSET_DATA_SINGLE,
++ .protocol_version = IP_SET_PROTOCOL_VERSION,
++ .create = &create,
++ .destroy = &destroy,
++ .flush = &flush,
++ .reqsize = sizeof(struct ip_set_req_portmap),
++ .addip = &addport,
++ .addip_kernel = &addport_kernel,
++ .delip = &delport,
++ .delip_kernel = &delport_kernel,
++ .testip = &testport,
++ .testip_kernel = &testport_kernel,
++ .header_size = sizeof(struct ip_set_req_portmap_create),
++ .list_header = &list_header,
++ .list_members_size = &list_members_size,
++ .list_members = &list_members,
++ .me = THIS_MODULE,
++};
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
++MODULE_DESCRIPTION("portmap type of IP sets");
++
++static int __init init(void)
++{
++ return ip_set_register_set_type(&ip_set_portmap);
++}
++
++static void __exit fini(void)
++{
++ /* FIXME: possible race with ip_set_create() */
++ ip_set_unregister_set_type(&ip_set_portmap);
++}
++
++module_init(init);
++module_exit(fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_set.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ipt_set.c 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,150 @@
++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
++ * Patrick Schaaf <bof@bof.de>
++ * Martin Josefsson <gandalf@wlug.westbo.se>
++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* Kernel module to match an IP set. */
++
++#include <linux/module.h>
++#include <linux/ip.h>
++#include <linux/skbuff.h>
++#include <linux/version.h>
++
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ip_set.h>
++#include <linux/netfilter_ipv4/ipt_set.h>
++
++static inline int
++match_set(const struct ipt_set_info *info,
++ const struct sk_buff *skb,
++ int inv)
++{
++ if (ip_set_testip_kernel(info->index, skb, info->flags))
++ inv = !inv;
++ return inv;
++}
++
++static int
++match(const struct sk_buff *skb,
++ const struct net_device *in,
++ const struct net_device *out,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ const struct xt_match *match,
++#endif
++ const void *matchinfo,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ int offset, unsigned int protoff, int *hotdrop)
++#else
++ int offset, int *hotdrop)
++#endif
++{
++ const struct ipt_set_info_match *info = matchinfo;
++
++ return match_set(&info->match_set,
++ skb,
++ info->match_set.flags[0] & IPSET_MATCH_INV);
++}
++
++static int
++checkentry(const char *tablename,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ const void *inf,
++#else
++ const struct ipt_ip *ip,
++#endif
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ const struct xt_match *match,
++#endif
++ void *matchinfo,
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ unsigned int matchsize,
++#endif
++ unsigned int hook_mask)
++{
++ struct ipt_set_info_match *info =
++ (struct ipt_set_info_match *) matchinfo;
++ ip_set_id_t index;
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ if (matchsize != IPT_ALIGN(sizeof(struct ipt_set_info_match))) {
++ ip_set_printk("invalid matchsize %d", matchsize);
++ return 0;
++ }
++#endif
++
++ index = ip_set_get_byindex(info->match_set.index);
++
++ if (index == IP_SET_INVALID_ID) {
++ ip_set_printk("Cannot find set indentified by id %u to match",
++ info->match_set.index);
++ return 0; /* error */
++ }
++ if (info->match_set.flags[IP_SET_MAX_BINDINGS] != 0) {
++ ip_set_printk("That's nasty!");
++ return 0; /* error */
++ }
++
++ return 1;
++}
++
++static void destroy(
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ const struct xt_match *match,
++#endif
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ void *matchinfo, unsigned int matchsize)
++#else
++ void *matchinfo)
++#endif
++{
++ struct ipt_set_info_match *info = matchinfo;
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ if (matchsize != IPT_ALIGN(sizeof(struct ipt_set_info_match))) {
++ ip_set_printk("invalid matchsize %d", matchsize);
++ return;
++ }
++#endif
++ ip_set_put(info->match_set.index);
++}
++
++static struct ipt_match set_match = {
++ .name = "set",
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
++ .family = AF_INET,
++#endif
++ .match = &match,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ .matchsize = sizeof(struct ipt_set_info_match),
++#endif
++ .checkentry = &checkentry,
++ .destroy = &destroy,
++ .me = THIS_MODULE
++};
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
++MODULE_DESCRIPTION("iptables IP set match module");
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
++#define ipt_register_match xt_register_match
++#define ipt_unregister_match xt_unregister_match
++#endif
++
++static int __init ipt_ipset_init(void)
++{
++ return ipt_register_match(&set_match);
++}
++
++static void __exit ipt_ipset_fini(void)
++{
++ ipt_unregister_match(&set_match);
++}
++
++module_init(ipt_ipset_init);
++module_exit(ipt_ipset_fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_SET.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ipt_SET.c 2007-09-21 16:24:01.000000000 +0800
+@@ -0,0 +1,169 @@
++/* Copyright (C) 2000-2002 Joakim Axelsson <gozem@linux.nu>
++ * Patrick Schaaf <bof@bof.de>
++ * Martin Josefsson <gandalf@wlug.westbo.se>
++ * Copyright (C) 2003-2004 Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* ipt_SET.c - netfilter target to manipulate IP sets */
++
++#include <linux/types.h>
++#include <linux/ip.h>
++#include <linux/timer.h>
++#include <linux/module.h>
++#include <linux/netfilter.h>
++#include <linux/netdevice.h>
++#include <linux/if.h>
++#include <linux/inetdevice.h>
++#include <linux/version.h>
++#include <linux/skbuff.h>
++#include <net/protocol.h>
++#include <net/checksum.h>
++#include <linux/netfilter_ipv4.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ipt_set.h>
++
++static unsigned int
++target(struct sk_buff **pskb,
++ const struct net_device *in,
++ const struct net_device *out,
++ unsigned int hooknum,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ const struct xt_target *target,
++#endif
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ const void *targinfo,
++ void *userinfo)
++#else
++ const void *targinfo)
++#endif
++{
++ const struct ipt_set_info_target *info = targinfo;
++
++ if (info->add_set.index != IP_SET_INVALID_ID)
++ ip_set_addip_kernel(info->add_set.index,
++ *pskb,
++ info->add_set.flags);
++ if (info->del_set.index != IP_SET_INVALID_ID)
++ ip_set_delip_kernel(info->del_set.index,
++ *pskb,
++ info->del_set.flags);
++
++ return IPT_CONTINUE;
++}
++
++static int
++checkentry(const char *tablename,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ const void *e,
++#else
++ const struct ipt_entry *e,
++#endif
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ const struct xt_target *target,
++#endif
++ void *targinfo,
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ unsigned int targinfosize,
++#endif
++ unsigned int hook_mask)
++{
++ struct ipt_set_info_target *info =
++ (struct ipt_set_info_target *) targinfo;
++ ip_set_id_t index;
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ if (targinfosize != IPT_ALIGN(sizeof(*info))) {
++ DP("bad target info size %u", targinfosize);
++ return 0;
++ }
++#endif
++
++ if (info->add_set.index != IP_SET_INVALID_ID) {
++ index = ip_set_get_byindex(info->add_set.index);
++ if (index == IP_SET_INVALID_ID) {
++ ip_set_printk("cannot find add_set index %u as target",
++ info->add_set.index);
++ return 0; /* error */
++ }
++ }
++
++ if (info->del_set.index != IP_SET_INVALID_ID) {
++ index = ip_set_get_byindex(info->del_set.index);
++ if (index == IP_SET_INVALID_ID) {
++ ip_set_printk("cannot find del_set index %u as target",
++ info->del_set.index);
++ return 0; /* error */
++ }
++ }
++ if (info->add_set.flags[IP_SET_MAX_BINDINGS] != 0
++ || info->del_set.flags[IP_SET_MAX_BINDINGS] != 0) {
++ ip_set_printk("That's nasty!");
++ return 0; /* error */
++ }
++
++ return 1;
++}
++
++static void destroy(
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ const struct xt_target *target,
++#endif
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ void *targetinfo, unsigned int targetsize)
++#else
++ void *targetinfo)
++#endif
++{
++ struct ipt_set_info_target *info = targetinfo;
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ if (targetsize != IPT_ALIGN(sizeof(struct ipt_set_info_target))) {
++ ip_set_printk("invalid targetsize %d", targetsize);
++ return;
++ }
++#endif
++ if (info->add_set.index != IP_SET_INVALID_ID)
++ ip_set_put(info->add_set.index);
++ if (info->del_set.index != IP_SET_INVALID_ID)
++ ip_set_put(info->del_set.index);
++}
++
++static struct ipt_target SET_target = {
++ .name = "SET",
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
++ .family = AF_INET,
++#endif
++ .target = target,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ .targetsize = sizeof(struct ipt_set_info_target),
++#endif
++ .checkentry = checkentry,
++ .destroy = destroy,
++ .me = THIS_MODULE
++};
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Jozsef Kadlecsik <kadlec@blackhole.kfki.hu>");
++MODULE_DESCRIPTION("iptables IP set target module");
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,21)
++#define ipt_register_target xt_register_target
++#define ipt_unregister_target xt_unregister_target
++#endif
++
++static int __init ipt_SET_init(void)
++{
++ return ipt_register_target(&SET_target);
++}
++
++static void __exit ipt_SET_fini(void)
++{
++ ipt_unregister_target(&SET_target);
++}
++
++module_init(ipt_SET_init);
++module_exit(ipt_SET_fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Kconfig 2007-09-21 16:24:00.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig 2007-09-21 16:24:01.000000000 +0800
+@@ -426,5 +426,114 @@
+ Allows altering the ARP packet payload: source and destination
+ hardware and network addresses.
+
++config IP_NF_SET
++ tristate "IP set support"
++ depends on INET && NETFILTER
++ help
++ This option adds IP set support to the kernel.
++ In order to define and use sets, you need the userspace utility
++ ipset(8).
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++config IP_NF_SET_MAX
++ int "Maximum number of IP sets"
++ default 256
++ range 2 65534
++ depends on IP_NF_SET
++ help
++ You can define here default value of the maximum number
++ of IP sets for the kernel.
++
++ The value can be overriden by the 'max_sets' module
++ parameter of the 'ip_set' module.
++
++config IP_NF_SET_HASHSIZE
++ int "Hash size for bindings of IP sets"
++ default 1024
++ depends on IP_NF_SET
++ help
++ You can define here default value of the hash size for
++ bindings of IP sets.
++
++ The value can be overriden by the 'hash_size' module
++ parameter of the 'ip_set' module.
++
++config IP_NF_SET_IPMAP
++ tristate "ipmap set support"
++ depends on IP_NF_SET
++ help
++ This option adds the ipmap set type support.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++config IP_NF_SET_MACIPMAP
++ tristate "macipmap set support"
++ depends on IP_NF_SET
++ help
++ This option adds the macipmap set type support.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++config IP_NF_SET_PORTMAP
++ tristate "portmap set support"
++ depends on IP_NF_SET
++ help
++ This option adds the portmap set type support.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++config IP_NF_SET_IPHASH
++ tristate "iphash set support"
++ depends on IP_NF_SET
++ help
++ This option adds the iphash set type support.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++config IP_NF_SET_NETHASH
++ tristate "nethash set support"
++ depends on IP_NF_SET
++ help
++ This option adds the nethash set type support.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++config IP_NF_SET_IPPORTHASH
++ tristate "ipporthash set support"
++ depends on IP_NF_SET
++ help
++ This option adds the ipporthash set type support.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++config IP_NF_SET_IPTREE
++ tristate "iptree set support"
++ depends on IP_NF_SET
++ help
++ This option adds the iptree set type support.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++config IP_NF_MATCH_SET
++ tristate "set match support"
++ depends on IP_NF_SET
++ help
++ Set matching matches against given IP sets.
++ You need the ipset utility to create and set up the sets.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++config IP_NF_TARGET_SET
++ tristate "SET target support"
++ depends on IP_NF_SET
++ help
++ The SET target makes possible to add/delete entries
++ in IP sets.
++ You need the ipset utility to create and set up the sets.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
++
+ endmenu
+
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Makefile 2007-09-21 16:24:00.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Makefile 2007-09-21 16:24:01.000000000 +0800
+@@ -48,6 +48,7 @@
+ obj-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o
+ obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o
+ obj-$(CONFIG_IP_NF_MATCH_TTL) += ipt_ttl.o
++obj-$(CONFIG_IP_NF_MATCH_SET) += ipt_set.o
+ obj-$(CONFIG_IP_NF_MATCH_ADDRTYPE) += ipt_addrtype.o
+ obj-$(CONFIG_IP_NF_MATCH_IPP2P) += ipt_ipp2p.o
+ obj-$(CONFIG_IP_NF_MATCH_LAYER7) += ipt_layer7.o
+@@ -64,6 +65,17 @@
+ obj-$(CONFIG_IP_NF_TARGET_ULOG) += ipt_ULOG.o
+ obj-$(CONFIG_IP_NF_TARGET_CLUSTERIP) += ipt_CLUSTERIP.o
+ obj-$(CONFIG_IP_NF_TARGET_TTL) += ipt_TTL.o
++obj-$(CONFIG_IP_NF_TARGET_SET) += ipt_SET.o
++
++# sets
++obj-$(CONFIG_IP_NF_SET) += ip_set.o
++obj-$(CONFIG_IP_NF_SET_IPMAP) += ip_set_ipmap.o
++obj-$(CONFIG_IP_NF_SET_PORTMAP) += ip_set_portmap.o
++obj-$(CONFIG_IP_NF_SET_MACIPMAP) += ip_set_macipmap.o
++obj-$(CONFIG_IP_NF_SET_IPHASH) += ip_set_iphash.o
++obj-$(CONFIG_IP_NF_SET_NETHASH) += ip_set_nethash.o
++obj-$(CONFIG_IP_NF_SET_IPPORTHASH) += ip_set_ipporthash.o
++obj-$(CONFIG_IP_NF_SET_IPTREE) += ip_set_iptree.o
+
+ # generic ARP tables
+ obj-$(CONFIG_IP_NF_ARPTABLES) += arp_tables.o
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_time.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_time.h 2007-09-21 16:24:02.000000000 +0800
+@@ -0,0 +1,18 @@
++#ifndef __ipt_time_h_included__
++#define __ipt_time_h_included__
++
++
++struct ipt_time_info {
++ u_int8_t days_match; /* 1 bit per day. -SMTWTFS */
++ u_int16_t time_start; /* 0 < time_start < 23*60+59 = 1439 */
++ u_int16_t time_stop; /* 0:0 < time_stat < 23:59 */
++
++ /* FIXME: Keep this one for userspace iptables binary compability: */
++ u_int8_t kerneltime; /* ignore skb time (and use kerneltime) or not. */
++
++ time_t date_start;
++ time_t date_stop;
++};
++
++
++#endif /* __ipt_time_h_included__ */
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_time.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ipt_time.c 2007-09-21 16:24:02.000000000 +0800
+@@ -0,0 +1,180 @@
++/*
++ This is a module which is used for time matching
++ It is using some modified code from dietlibc (localtime() function)
++ that you can find at http://www.fefe.de/dietlibc/
++ This file is distributed under the terms of the GNU General Public
++ License (GPL). Copies of the GPL can be obtained from: ftp://prep.ai.mit.edu/pub/gnu/GPL
++ 2001-05-04 Fabrice MARIE <fabrice@netfilter.org> : initial development.
++ 2001-21-05 Fabrice MARIE <fabrice@netfilter.org> : bug fix in the match code,
++ thanks to "Zeng Yu" <zengy@capitel.com.cn> for bug report.
++ 2001-26-09 Fabrice MARIE <fabrice@netfilter.org> : force the match to be in LOCAL_IN or PRE_ROUTING only.
++ 2001-30-11 Fabrice : added the possibility to use the match in FORWARD/OUTPUT with a little hack,
++ added Nguyen Dang Phuoc Dong <dongnd@tlnet.com.vn> patch to support timezones.
++ 2004-05-02 Fabrice : added support for date matching, from an idea of Fabien COELHO.
++*/
++
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ipt_time.h>
++#include <linux/time.h>
++
++MODULE_AUTHOR("Fabrice MARIE <fabrice@netfilter.org>");
++MODULE_DESCRIPTION("Match arrival timestamp/date");
++MODULE_LICENSE("GPL");
++
++struct tm
++{
++ int tm_sec; /* Seconds. [0-60] (1 leap second) */
++ int tm_min; /* Minutes. [0-59] */
++ int tm_hour; /* Hours. [0-23] */
++ int tm_mday; /* Day. [1-31] */
++ int tm_mon; /* Month. [0-11] */
++ int tm_year; /* Year - 1900. */
++ int tm_wday; /* Day of week. [0-6] */
++ int tm_yday; /* Days in year.[0-365] */
++ int tm_isdst; /* DST. [-1/0/1]*/
++
++ long int tm_gmtoff; /* we don't care, we count from GMT */
++ const char *tm_zone; /* we don't care, we count from GMT */
++};
++
++void
++localtime(const u32 time, struct tm *r);
++
++static bool
++match(const struct sk_buff *skb,
++ const struct net_device *in,
++ const struct net_device *out,
++ const struct xt_match *match,
++ const void *matchinfo,
++ int offset,
++ unsigned int protoff,
++ bool *hotdrop)
++{
++ const struct ipt_time_info *info = matchinfo; /* match info for rule */
++ struct timeval tv;
++ struct tm currenttime; /* time human readable */
++ u_int8_t days_of_week[7] = {64, 32, 16, 8, 4, 2, 1};
++ u_int16_t packet_time;
++
++ /* We might not have a timestamp, get one */
++ if (skb->tstamp.tv64 == 0)
++ __net_timestamp((struct sk_buff *)skb);
++
++ skb_get_timestamp(skb, &tv);
++ /* First we make sure we are in the date start-stop boundaries */
++ if ((tv.tv_sec < info->date_start) || (tv.tv_sec > info->date_stop))
++ return 0; /* We are outside the date boundaries */
++
++ /* Transform the timestamp of the packet, in a human readable form */
++ localtime(tv.tv_sec, ¤ttime);
++
++ /* check if we match this timestamp, we start by the days... */
++ if ((days_of_week[currenttime.tm_wday] & info->days_match) != days_of_week[currenttime.tm_wday])
++ return 0; /* the day doesn't match */
++
++ /* ... check the time now */
++ packet_time = (currenttime.tm_hour * 60) + currenttime.tm_min;
++ if ((packet_time < info->time_start) || (packet_time > info->time_stop))
++ return 0;
++
++ /* here we match ! */
++ return 1;
++}
++
++static bool
++checkentry(const char *tablename,
++ const void *ip,
++ const struct xt_match *match,
++ void *matchinfo,
++ unsigned int hook_mask)
++{
++ struct ipt_time_info *info = matchinfo; /* match info for rule */
++
++ /* First, check that we are in the correct hooks */
++ if (hook_mask
++ & ~((1 << NF_IP_PRE_ROUTING) | (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD) | (1 << NF_IP_LOCAL_OUT)))
++ {
++ printk("ipt_time: error, only valid for PRE_ROUTING, LOCAL_IN, FORWARD and OUTPUT)\n");
++ return 0;
++ }
++
++ /* Now check the coherence of the data ... */
++ if ((info->time_start > 1439) || /* 23*60+59 = 1439*/
++ (info->time_stop > 1439))
++ {
++ printk(KERN_WARNING "ipt_time: invalid argument\n");
++ return 0;
++ }
++
++ return 1;
++}
++
++static struct ipt_match time_match = {
++ .name = "time",
++ .match = &match,
++ .matchsize = sizeof(struct ipt_time_info),
++ .checkentry = &checkentry,
++ .me = THIS_MODULE
++};
++
++static int __init init(void)
++{
++ printk("ipt_time loading\n");
++ return xt_register_match(&time_match);
++}
++
++static void __exit fini(void)
++{
++ xt_unregister_match(&time_match);
++ printk("ipt_time unloaded\n");
++}
++
++module_init(init);
++module_exit(fini);
++
++
++/* The part below is borowed and modified from dietlibc */
++
++/* seconds per day */
++#define SPD 24*60*60
++
++void
++localtime(const u32 time, struct tm *r) {
++ u32 i, timep;
++ extern struct timezone sys_tz;
++ const unsigned int __spm[12] =
++ { 0,
++ (31),
++ (31+28),
++ (31+28+31),
++ (31+28+31+30),
++ (31+28+31+30+31),
++ (31+28+31+30+31+30),
++ (31+28+31+30+31+30+31),
++ (31+28+31+30+31+30+31+31),
++ (31+28+31+30+31+30+31+31+30),
++ (31+28+31+30+31+30+31+31+30+31),
++ (31+28+31+30+31+30+31+31+30+31+30),
++ };
++ register u32 work;
++
++ timep = time - (sys_tz.tz_minuteswest * 60);
++ work=timep%(SPD);
++ r->tm_sec=work%60; work/=60;
++ r->tm_min=work%60; r->tm_hour=work/60;
++ work=timep/(SPD);
++ r->tm_wday=(4+work)%7;
++ for (i=1970; ; ++i) {
++ register time_t k= (!(i%4) && ((i%100) || !(i%400)))?366:365;
++ if (work>k)
++ work-=k;
++ else
++ break;
++ }
++ r->tm_year=i-1900;
++ for (i=11; i && __spm[i]>work; --i) ;
++ r->tm_mon=i;
++ r->tm_mday=work-__spm[i]+1;
++}
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Kconfig 2007-09-21 16:24:01.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig 2007-09-21 16:24:02.000000000 +0800
+@@ -96,6 +96,22 @@
+
+ To compile it as a module, choose M here. If unsure, say N.
+
++
++config IP_NF_MATCH_TIME
++ tristate 'TIME match support'
++ depends on IP_NF_IPTABLES
++ help
++ This option adds a `time' match, which allows you
++ to match based on the packet arrival time/date
++ (arrival time/date at the machine which netfilter is running on) or
++ departure time/date (for locally generated packets).
++
++ If you say Y here, try iptables -m time --help for more information.
++ If you want to compile it as a module, say M here and read
++
++ Documentation/modules.txt. If unsure, say `N'.
++
++
+ config IP_NF_MATCH_RECENT
+ tristate "recent match support"
+ depends on IP_NF_IPTABLES
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Makefile 2007-09-21 16:24:01.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Makefile 2007-09-21 16:24:02.000000000 +0800
+@@ -44,6 +44,7 @@
+ obj-$(CONFIG_IP_NF_MATCH_IPRANGE) += ipt_iprange.o
+ obj-$(CONFIG_IP_NF_MATCH_OWNER) += ipt_owner.o
+ obj-$(CONFIG_IP_NF_MATCH_TOS) += ipt_tos.o
++obj-$(CONFIG_IP_NF_MATCH_TIME) += ipt_time.o
+ obj-$(CONFIG_IP_NF_MATCH_RECENT) += ipt_recent.o
+ obj-$(CONFIG_IP_NF_MATCH_ECN) += ipt_ecn.o
+ obj-$(CONFIG_IP_NF_MATCH_AH) += ipt_ah.o
--- /dev/null
+Index: linux-2.6.23-rc6/drivers/net/imq.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/drivers/net/imq.c 2007-09-21 16:24:02.000000000 +0800
+@@ -0,0 +1,402 @@
++/*
++ * Pseudo-driver for the intermediate queue device.
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ *
++ * Authors: Patrick McHardy, <kaber@trash.net>
++ *
++ * The first version was written by Martin Devera, <devik@cdi.cz>
++ *
++ * Credits: Jan Rafaj <imq2t@cedric.vabo.cz>
++ * - Update patch to 2.4.21
++ * Sebastian Strollo <sstrollo@nortelnetworks.com>
++ * - Fix "Dead-loop on netdevice imq"-issue
++ * Marcel Sebek <sebek64@post.cz>
++ * - Update to 2.6.2-rc1
++ *
++ * After some time of inactivity there is a group taking care
++ * of IMQ again: http://www.linuximq.net
++ *
++ *
++ * 2004/06/30 - New version of IMQ patch to kernels <=2.6.7 including
++ * the following changes:
++ *
++ * - Correction of ipv6 support "+"s issue (Hasso Tepper)
++ * - Correction of imq_init_devs() issue that resulted in
++ * kernel OOPS unloading IMQ as module (Norbert Buchmuller)
++ * - Addition of functionality to choose number of IMQ devices
++ * during kernel config (Andre Correa)
++ * - Addition of functionality to choose how IMQ hooks on
++ * PRE and POSTROUTING (after or before NAT) (Andre Correa)
++ * - Cosmetic corrections (Norbert Buchmuller) (Andre Correa)
++ *
++ *
++ * 2005/12/16 - IMQ versions between 2.6.7 and 2.6.13 were
++ * released with almost no problems. 2.6.14-x was released
++ * with some important changes: nfcache was removed; After
++ * some weeks of trouble we figured out that some IMQ fields
++ * in skb were missing in skbuff.c - skb_clone and copy_skb_header.
++ * These functions are correctly patched by this new patch version.
++ *
++ * Thanks for all who helped to figure out all the problems with
++ * 2.6.14.x: Patrick McHardy, Rune Kock, VeNoMouS, Max CtRiX,
++ * Kevin Shanahan, Richard Lucassen, Valery Dachev (hopefully
++ * I didn't forget anybody). I apologize again for my lack of time.
++ *
++ * More info at: http://www.linuximq.net/ (Andre Correa)
++ */
++
++#include <linux/module.h>
++#include <linux/kernel.h>
++#include <linux/moduleparam.h>
++#include <linux/skbuff.h>
++#include <linux/netdevice.h>
++#include <linux/rtnetlink.h>
++#include <linux/if_arp.h>
++#include <linux/netfilter.h>
++#include <linux/netfilter_ipv4.h>
++#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
++ #include <linux/netfilter_ipv6.h>
++#endif
++#include <linux/imq.h>
++#include <net/pkt_sched.h>
++
++extern int qdisc_restart1(struct net_device *dev);
++
++static nf_hookfn imq_nf_hook;
++
++static struct nf_hook_ops imq_ingress_ipv4 = {
++ .hook = imq_nf_hook,
++ .owner = THIS_MODULE,
++ .pf = PF_INET,
++ .hooknum = NF_IP_PRE_ROUTING,
++#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB)
++ .priority = NF_IP_PRI_MANGLE + 1
++#else
++ .priority = NF_IP_PRI_NAT_DST + 1
++#endif
++};
++
++static struct nf_hook_ops imq_egress_ipv4 = {
++ .hook = imq_nf_hook,
++ .owner = THIS_MODULE,
++ .pf = PF_INET,
++ .hooknum = NF_IP_POST_ROUTING,
++#if defined(CONFIG_IMQ_BEHAVIOR_AA) || defined(CONFIG_IMQ_BEHAVIOR_BA)
++ .priority = NF_IP_PRI_LAST
++#else
++ .priority = NF_IP_PRI_NAT_SRC - 1
++#endif
++};
++
++#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
++static struct nf_hook_ops imq_ingress_ipv6 = {
++ .hook = imq_nf_hook,
++ .owner = THIS_MODULE,
++ .pf = PF_INET6,
++ .hooknum = NF_IP6_PRE_ROUTING,
++#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB)
++ .priority = NF_IP6_PRI_MANGLE + 1
++#else
++ .priority = NF_IP6_PRI_NAT_DST + 1
++#endif
++};
++
++static struct nf_hook_ops imq_egress_ipv6 = {
++ .hook = imq_nf_hook,
++ .owner = THIS_MODULE,
++ .pf = PF_INET6,
++ .hooknum = NF_IP6_POST_ROUTING,
++#if defined(CONFIG_IMQ_BEHAVIOR_AA) || defined(CONFIG_IMQ_BEHAVIOR_BA)
++ .priority = NF_IP6_PRI_LAST
++#else
++ .priority = NF_IP6_PRI_NAT_SRC - 1
++#endif
++};
++#endif
++
++#if defined(CONFIG_IMQ_NUM_DEVS)
++static unsigned int numdevs = CONFIG_IMQ_NUM_DEVS;
++#else
++static unsigned int numdevs = 2;
++#endif
++
++static struct net_device *imq_devs;
++
++static struct net_device_stats *imq_get_stats(struct net_device *dev)
++{
++ return (struct net_device_stats *)dev->priv;
++}
++
++/* called for packets kfree'd in qdiscs at places other than enqueue */
++static void imq_skb_destructor(struct sk_buff *skb)
++{
++ struct nf_info *info = skb->nf_info;
++
++ if (info) {
++ if (info->indev)
++ dev_put(info->indev);
++ if (info->outdev)
++ dev_put(info->outdev);
++ kfree(info);
++ }
++}
++
++static int imq_dev_xmit(struct sk_buff *skb, struct net_device *dev)
++{
++ struct net_device_stats *stats = (struct net_device_stats*) dev->priv;
++
++ stats->tx_bytes += skb->len;
++ stats->tx_packets++;
++
++ skb->imq_flags = 0;
++ skb->destructor = NULL;
++
++ dev->trans_start = jiffies;
++ nf_reinject(skb, skb->nf_info, NF_ACCEPT);
++ return 0;
++}
++
++static int imq_nf_queue(struct sk_buff *skb, struct nf_info *info, unsigned queue_num, void *data)
++{
++ struct net_device *dev;
++ struct net_device_stats *stats;
++ struct sk_buff *skb2 = NULL;
++ struct Qdisc *q;
++ unsigned int index = skb->imq_flags&IMQ_F_IFMASK;
++ int ret = -1;
++
++ if (index > numdevs)
++ return -1;
++
++ dev = imq_devs + index;
++ if (!(dev->flags & IFF_UP)) {
++ skb->imq_flags = 0;
++ nf_reinject(skb, info, NF_ACCEPT);
++ return 0;
++ }
++ dev->last_rx = jiffies;
++
++ if (skb->destructor) {
++ skb2 = skb;
++ skb = skb_clone(skb, GFP_ATOMIC);
++ if (!skb)
++ return -1;
++ }
++ skb->nf_info = info;
++
++ stats = (struct net_device_stats *)dev->priv;
++ stats->rx_bytes+= skb->len;
++ stats->rx_packets++;
++
++ spin_lock_bh(&dev->queue_lock);
++ q = dev->qdisc;
++ if (q->enqueue) {
++ q->enqueue(skb_get(skb), q);
++ if (skb_shared(skb)) {
++ skb->destructor = imq_skb_destructor;
++ kfree_skb(skb);
++ ret = 0;
++ }
++ }
++ if (spin_is_locked(&dev->_xmit_lock))
++ netif_schedule(dev);
++ else
++ while (!netif_queue_stopped(dev) && qdisc_restart1(dev) < 0)
++ /* NOTHING */;
++
++ spin_unlock_bh(&dev->queue_lock);
++
++ if (skb2)
++ kfree_skb(ret ? skb : skb2);
++
++ return ret;
++}
++
++static struct nf_queue_handler nfqh = {
++ .name = "imq",
++ .outfn = imq_nf_queue,
++};
++
++static unsigned int imq_nf_hook(unsigned int hook, struct sk_buff **pskb,
++ const struct net_device *indev,
++ const struct net_device *outdev,
++ int (*okfn)(struct sk_buff *))
++{
++ if ((*pskb)->imq_flags & IMQ_F_ENQUEUE)
++ return NF_QUEUE;
++
++ return NF_ACCEPT;
++}
++
++
++static int __init imq_init_hooks(void)
++{
++ int err;
++
++ err = nf_register_queue_handler(PF_INET, &nfqh);
++ if (err > 0)
++ goto err1;
++ if ((err = nf_register_hook(&imq_ingress_ipv4)))
++ goto err2;
++ if ((err = nf_register_hook(&imq_egress_ipv4)))
++ goto err3;
++#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
++ if ((err = nf_register_queue_handler(PF_INET6, &nfqh)))
++ goto err4;
++ if ((err = nf_register_hook(&imq_ingress_ipv6)))
++ goto err5;
++ if ((err = nf_register_hook(&imq_egress_ipv6)))
++ goto err6;
++#endif
++
++ return 0;
++
++#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
++err6:
++ nf_unregister_hook(&imq_ingress_ipv6);
++err5:
++ nf_unregister_queue_handler(PF_INET6, &nfqh);
++err4:
++ nf_unregister_hook(&imq_egress_ipv4);
++#endif
++err3:
++ nf_unregister_hook(&imq_ingress_ipv4);
++err2:
++ nf_unregister_queue_handler(PF_INET, &nfqh);
++err1:
++ return err;
++}
++
++static void __exit imq_unhook(void)
++{
++ nf_unregister_hook(&imq_ingress_ipv4);
++ nf_unregister_hook(&imq_egress_ipv4);
++ nf_unregister_queue_handler(PF_INET, &nfqh);
++#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE)
++ nf_unregister_hook(&imq_ingress_ipv6);
++ nf_unregister_hook(&imq_egress_ipv6);
++ nf_unregister_queue_handler(PF_INET6, &nfqh);
++#endif
++}
++
++static int __init imq_dev_init(struct net_device *dev)
++{
++ dev->hard_start_xmit = imq_dev_xmit;
++ dev->type = ARPHRD_VOID;
++ dev->mtu = 1500;
++ dev->tx_queue_len = 30;
++ dev->flags = IFF_NOARP;
++ dev->priv = kmalloc(sizeof(struct net_device_stats), GFP_KERNEL);
++ if (dev->priv == NULL)
++ return -ENOMEM;
++ memset(dev->priv, 0, sizeof(struct net_device_stats));
++ dev->get_stats = imq_get_stats;
++
++ return 0;
++}
++
++static void imq_dev_uninit(struct net_device *dev)
++{
++ kfree(dev->priv);
++}
++
++static int __init imq_init_devs(void)
++{
++ struct net_device *dev;
++ int i,j;
++ j = numdevs;
++
++ if (!numdevs || numdevs > IMQ_MAX_DEVS) {
++ printk(KERN_ERR "IMQ: numdevs has to be betweed 1 and %u\n",
++ IMQ_MAX_DEVS);
++ return -EINVAL;
++ }
++
++ imq_devs = kmalloc(sizeof(struct net_device) * numdevs, GFP_KERNEL);
++ if (!imq_devs)
++ return -ENOMEM;
++ memset(imq_devs, 0, sizeof(struct net_device) * numdevs);
++
++ /* we start counting at zero */
++ numdevs--;
++
++ for (i = 0, dev = imq_devs; i <= numdevs; i++, dev++) {
++ SET_MODULE_OWNER(dev);
++ strcpy(dev->name, "imq%d");
++ dev->init = imq_dev_init;
++ dev->uninit = imq_dev_uninit;
++
++ if (register_netdev(dev) < 0)
++ goto err_register;
++ }
++ printk(KERN_INFO "IMQ starting with %u devices...\n", j);
++ return 0;
++
++err_register:
++ for (; i; i--)
++ unregister_netdev(--dev);
++ kfree(imq_devs);
++ return -EIO;
++}
++
++static void imq_cleanup_devs(void)
++{
++ int i;
++ struct net_device *dev = imq_devs;
++
++ for (i = 0; i <= numdevs; i++)
++ unregister_netdev(dev++);
++
++ kfree(imq_devs);
++}
++
++static int __init imq_init_module(void)
++{
++ int err;
++
++ if ((err = imq_init_devs())) {
++ printk(KERN_ERR "IMQ: Error trying imq_init_devs()\n");
++ return err;
++ }
++ if ((err = imq_init_hooks())) {
++ printk(KERN_ERR "IMQ: Error trying imq_init_hooks()\n");
++ imq_cleanup_devs();
++ return err;
++ }
++
++ printk(KERN_INFO "IMQ driver loaded successfully.\n");
++
++#if defined(CONFIG_IMQ_BEHAVIOR_BA) || defined(CONFIG_IMQ_BEHAVIOR_BB)
++ printk(KERN_INFO "\tHooking IMQ before NAT on PREROUTING.\n");
++#else
++ printk(KERN_INFO "\tHooking IMQ after NAT on PREROUTING.\n");
++#endif
++#if defined(CONFIG_IMQ_BEHAVIOR_AB) || defined(CONFIG_IMQ_BEHAVIOR_BB)
++ printk(KERN_INFO "\tHooking IMQ before NAT on POSTROUTING.\n");
++#else
++ printk(KERN_INFO "\tHooking IMQ after NAT on POSTROUTING.\n");
++#endif
++
++ return 0;
++}
++
++static void __exit imq_cleanup_module(void)
++{
++ imq_unhook();
++ imq_cleanup_devs();
++ printk(KERN_INFO "IMQ driver unloaded successfully.\n");
++}
++
++
++module_init(imq_init_module);
++module_exit(imq_cleanup_module);
++
++module_param(numdevs, int, 0);
++MODULE_PARM_DESC(numdevs, "number of IMQ devices (how many imq* devices will be created)");
++MODULE_AUTHOR("http://www.linuximq.net");
++MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
++MODULE_LICENSE("GPL");
+Index: linux-2.6.23-rc6/drivers/net/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/net/Kconfig 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/drivers/net/Kconfig 2007-09-21 16:24:02.000000000 +0800
+@@ -112,6 +112,129 @@
+ To compile this driver as a module, choose M here: the module
+ will be called eql. If unsure, say N.
+
++config IMQ
++ tristate "IMQ (intermediate queueing device) support"
++ depends on NETDEVICES && NETFILTER
++ ---help---
++ The IMQ device(s) is used as placeholder for QoS queueing
++ disciplines. Every packet entering/leaving the IP stack can be
++ directed through the IMQ device where it's enqueued/dequeued to the
++ attached qdisc. This allows you to treat network devices as classes
++ and distribute bandwidth among them. Iptables is used to specify
++ through which IMQ device, if any, packets travel.
++
++ More information at: http://www.linuximq.net/
++
++ To compile this driver as a module, choose M here: the module
++ will be called imq. If unsure, say N.
++
++choice
++ prompt "IMQ behavior (PRE/POSTROUTING)"
++ depends on IMQ
++ default IMQ_BEHAVIOR_BA
++ help
++
++ This settings defines how IMQ behaves in respect to its
++ hooking in PREROUTING and POSTROUTING.
++
++ IMQ can work in any of the following ways:
++
++ PREROUTING | POSTROUTING
++ -----------------|-------------------
++ #1 After NAT | After NAT
++ #2 After NAT | Before NAT
++ #3 Before NAT | After NAT
++ #4 Before NAT | Before NAT
++
++ The default behavior is to hook before NAT on PREROUTING
++ and after NAT on POSTROUTING (#3).
++
++ This settings are specially usefull when trying to use IMQ
++ to shape NATed clients.
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
++config IMQ_BEHAVIOR_AA
++ bool "IMQ AA"
++ help
++ This settings defines how IMQ behaves in respect to its
++ hooking in PREROUTING and POSTROUTING.
++
++ Choosing this option will make IMQ hook like this:
++
++ PREROUTING: After NAT
++ POSTROUTING: After NAT
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
++config IMQ_BEHAVIOR_AB
++ bool "IMQ AB"
++ help
++ This settings defines how IMQ behaves in respect to its
++ hooking in PREROUTING and POSTROUTING.
++
++ Choosing this option will make IMQ hook like this:
++
++ PREROUTING: After NAT
++ POSTROUTING: Before NAT
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
++config IMQ_BEHAVIOR_BA
++ bool "IMQ BA"
++ help
++ This settings defines how IMQ behaves in respect to its
++ hooking in PREROUTING and POSTROUTING.
++
++ Choosing this option will make IMQ hook like this:
++
++ PREROUTING: Before NAT
++ POSTROUTING: After NAT
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
++config IMQ_BEHAVIOR_BB
++ bool "IMQ BB"
++ help
++ This settings defines how IMQ behaves in respect to its
++ hooking in PREROUTING and POSTROUTING.
++
++ Choosing this option will make IMQ hook like this:
++
++ PREROUTING: Before NAT
++ POSTROUTING: Before NAT
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
++endchoice
++
++config IMQ_NUM_DEVS
++
++ int "Number of IMQ devices"
++ range 2 8
++ depends on IMQ
++ default "2"
++ help
++
++ This settings defines how many IMQ devices will be
++ created.
++
++ The default value is 2.
++
++ More information can be found at: www.linuximq.net
++
++ If not sure leave the default settings alone.
++
+ config TUN
+ tristate "Universal TUN/TAP device driver support"
+ select CRC32
+Index: linux-2.6.23-rc6/drivers/net/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/net/Makefile 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/drivers/net/Makefile 2007-09-21 16:24:02.000000000 +0800
+@@ -130,6 +130,7 @@
+ obj-$(CONFIG_XEN_NETDEV_FRONTEND) += xen-netfront.o
+
+ obj-$(CONFIG_DUMMY) += dummy.o
++obj-$(CONFIG_IMQ) += imq.o
+ obj-$(CONFIG_IFB) += ifb.o
+ obj-$(CONFIG_MACVLAN) += macvlan.o
+ obj-$(CONFIG_DE600) += de600.o
+Index: linux-2.6.23-rc6/include/linux/imq.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/imq.h 2007-09-21 16:24:02.000000000 +0800
+@@ -0,0 +1,9 @@
++#ifndef _IMQ_H
++#define _IMQ_H
++
++#define IMQ_MAX_DEVS 16
++
++#define IMQ_F_IFMASK 0x7f
++#define IMQ_F_ENQUEUE 0x80
++
++#endif /* _IMQ_H */
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_IMQ.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_IMQ.h 2007-09-21 16:24:02.000000000 +0800
+@@ -0,0 +1,8 @@
++#ifndef _IPT_IMQ_H
++#define _IPT_IMQ_H
++
++struct ipt_imq_info {
++ unsigned int todev; /* target imq device */
++};
++
++#endif /* _IPT_IMQ_H */
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv6/ip6t_IMQ.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv6/ip6t_IMQ.h 2007-09-21 16:24:02.000000000 +0800
+@@ -0,0 +1,8 @@
++#ifndef _IP6T_IMQ_H
++#define _IP6T_IMQ_H
++
++struct ip6t_imq_info {
++ unsigned int todev; /* target imq device */
++};
++
++#endif /* _IP6T_IMQ_H */
+Index: linux-2.6.23-rc6/include/linux/skbuff.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/skbuff.h 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/skbuff.h 2007-09-21 16:24:02.000000000 +0800
+@@ -296,6 +296,10 @@
+ struct nf_conntrack *nfct;
+ struct sk_buff *nfct_reasm;
+ #endif
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++ unsigned char imq_flags;
++ struct nf_info *nf_info;
++#endif
+ #ifdef CONFIG_BRIDGE_NETFILTER
+ struct nf_bridge_info *nf_bridge;
+ #endif
+Index: linux-2.6.23-rc6/net/core/dev.c
+===================================================================
+--- linux-2.6.23-rc6.orig/net/core/dev.c 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/core/dev.c 2007-09-21 16:24:02.000000000 +0800
+@@ -94,6 +94,9 @@
+ #include <linux/skbuff.h>
+ #include <net/sock.h>
+ #include <linux/rtnetlink.h>
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++#include <linux/imq.h>
++#endif
+ #include <linux/proc_fs.h>
+ #include <linux/seq_file.h>
+ #include <linux/stat.h>
+@@ -1463,6 +1466,9 @@
+ {
+ if (likely(!skb->next)) {
+ if (!list_empty(&ptype_all))
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++ if (!(skb->imq_flags & IMQ_F_ENQUEUE))
++#endif
+ dev_queue_xmit_nit(skb, dev);
+
+ if (netif_needs_gso(dev, skb)) {
+Index: linux-2.6.23-rc6/net/core/skbuff.c
+===================================================================
+--- linux-2.6.23-rc6.orig/net/core/skbuff.c 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/core/skbuff.c 2007-09-21 16:24:02.000000000 +0800
+@@ -421,6 +421,10 @@
+ C(ip_summed);
+ skb_copy_queue_mapping(n, skb);
+ C(priority);
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++ C(imq_flags);
++ C(nf_info);
++#endif /*CONFIG_IMQ*/
+ #if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
+ C(ipvs_property);
+ #endif
+@@ -496,6 +500,10 @@
+ #if defined(CONFIG_IP_VS) || defined(CONFIG_IP_VS_MODULE)
+ new->ipvs_property = old->ipvs_property;
+ #endif
++#if defined(CONFIG_IMQ) || defined(CONFIG_IMQ_MODULE)
++ new->imq_flags = old->imq_flags;
++ new->nf_info = old->nf_info;
++#endif /*CONFIG_IMQ*/
+ #ifdef CONFIG_NET_SCHED
+ #ifdef CONFIG_NET_CLS_ACT
+ new->tc_verd = old->tc_verd;
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_IMQ.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ipt_IMQ.c 2007-09-21 16:24:02.000000000 +0800
+@@ -0,0 +1,69 @@
++/*
++ * This target marks packets to be enqueued to an imq device
++ */
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <linux/netfilter_ipv4/ipt_IMQ.h>
++#include <linux/imq.h>
++
++static unsigned int imq_target(struct sk_buff **pskb,
++ const struct net_device *in,
++ const struct net_device *out,
++ unsigned int hooknum,
++ const struct xt_target *target,
++ const void *targinfo)
++{
++ struct ipt_imq_info *mr = (struct ipt_imq_info*)targinfo;
++
++ (*pskb)->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++
++ return XT_CONTINUE;
++}
++
++static bool imq_checkentry(const char *tablename,
++ const void *e,
++ const struct xt_target *target,
++ void *targinfo,
++ unsigned int hook_mask)
++{
++ struct ipt_imq_info *mr;
++
++ mr = (struct ipt_imq_info*)targinfo;
++
++ if (mr->todev > IMQ_MAX_DEVS) {
++ printk(KERN_WARNING
++ "IMQ: invalid device specified, highest is %u\n",
++ IMQ_MAX_DEVS);
++ return 0;
++ }
++
++ return 1;
++}
++
++static struct xt_target ipt_imq_reg = {
++ .name = "IMQ",
++ .family = AF_INET,
++ .target = imq_target,
++ .targetsize = sizeof(struct ipt_imq_info),
++ .checkentry = imq_checkentry,
++ .me = THIS_MODULE,
++ .table = "mangle"
++};
++
++static int __init init(void)
++{
++ return xt_register_target(&ipt_imq_reg);
++}
++
++static void __exit fini(void)
++{
++ xt_unregister_target(&ipt_imq_reg);
++}
++
++module_init(init);
++module_exit(fini);
++
++MODULE_AUTHOR("http://www.linuximq.net");
++MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
++MODULE_LICENSE("GPL");
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Kconfig 2007-09-21 16:24:02.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig 2007-09-21 16:24:02.000000000 +0800
+@@ -351,6 +351,17 @@
+
+ To compile it as a module, choose M here. If unsure, say N.
+
++config IP_NF_TARGET_IMQ
++ tristate "IMQ target support"
++ depends on IP_NF_MANGLE
++ help
++ This option adds a `IMQ' target which is used to specify if and
++ to which IMQ device packets should get enqueued/dequeued.
++
++ For more information visit: http://www.linuximq.net/
++
++ To compile it as a module, choose M here. If unsure, say N.
++
+ config IP_NF_TARGET_TOS
+ tristate "TOS target support"
+ depends on IP_NF_MANGLE
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Makefile 2007-09-21 16:24:02.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Makefile 2007-09-21 16:24:02.000000000 +0800
+@@ -58,6 +58,7 @@
+ obj-$(CONFIG_IP_NF_TARGET_REJECT) += ipt_REJECT.o
+ obj-$(CONFIG_IP_NF_TARGET_TOS) += ipt_TOS.o
+ obj-$(CONFIG_IP_NF_TARGET_ECN) += ipt_ECN.o
++obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o
+ obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
+ obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
+ obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o
+Index: linux-2.6.23-rc6/net/ipv6/netfilter/ip6t_IMQ.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv6/netfilter/ip6t_IMQ.c 2007-09-21 16:24:02.000000000 +0800
+@@ -0,0 +1,69 @@
++/*
++ * This target marks packets to be enqueued to an imq device
++ */
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/netfilter_ipv6/ip6_tables.h>
++#include <linux/netfilter_ipv6/ip6t_IMQ.h>
++#include <linux/imq.h>
++
++static unsigned int imq_target(struct sk_buff **pskb,
++ const struct net_device *in,
++ const struct net_device *out,
++ unsigned int hooknum,
++ const struct xt_target *target,
++ const void *targinfo)
++{
++ struct ip6t_imq_info *mr = (struct ip6t_imq_info*)targinfo;
++
++ (*pskb)->imq_flags = mr->todev | IMQ_F_ENQUEUE;
++
++ return XT_CONTINUE;
++}
++
++static int imq_checkentry(const char *tablename,
++ const void *entry,
++ const struct xt_target *target,
++ void *targinfo,
++ unsigned int hook_mask)
++{
++ struct ip6t_imq_info *mr;
++
++ mr = (struct ip6t_imq_info*)targinfo;
++
++ if (mr->todev > IMQ_MAX_DEVS) {
++ printk(KERN_WARNING
++ "IMQ: invalid device specified, highest is %u\n",
++ IMQ_MAX_DEVS);
++ return 0;
++ }
++
++ return 1;
++}
++
++static struct xt_target ip6t_imq_reg = {
++ .name = "IMQ",
++ .family = AF_INET6,
++ .target = imq_target,
++ .targetsize = sizeof(struct ip6t_imq_info),
++ .table = "mangle",
++ .checkentry = imq_checkentry,
++ .me = THIS_MODULE
++};
++
++static int __init init(void)
++{
++ return xt_register_target(&ip6t_imq_reg);
++}
++
++static void __exit fini(void)
++{
++ xt_unregister_target(&ip6t_imq_reg);
++}
++
++module_init(init);
++module_exit(fini);
++
++MODULE_AUTHOR("http://www.linuximq.net");
++MODULE_DESCRIPTION("Pseudo-driver for the intermediate queue device. See http://www.linuximq.net/ for more information.");
++MODULE_LICENSE("GPL");
+Index: linux-2.6.23-rc6/net/ipv6/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv6/netfilter/Kconfig 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv6/netfilter/Kconfig 2007-09-21 16:24:02.000000000 +0800
+@@ -173,6 +173,15 @@
+
+ To compile it as a module, choose M here. If unsure, say N.
+
++config IP6_NF_TARGET_IMQ
++ tristate "IMQ target support"
++ depends on IP6_NF_MANGLE
++ help
++ This option adds a `IMQ' target which is used to specify if and
++ to which imq device packets should get enqueued/dequeued.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
+ config IP6_NF_TARGET_HL
+ tristate 'HL (hoplimit) target support'
+ depends on IP6_NF_MANGLE
+Index: linux-2.6.23-rc6/net/ipv6/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv6/netfilter/Makefile 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv6/netfilter/Makefile 2007-09-21 16:24:02.000000000 +0800
+@@ -13,6 +13,7 @@
+ obj-$(CONFIG_IP6_NF_MATCH_OWNER) += ip6t_owner.o
+ obj-$(CONFIG_IP6_NF_FILTER) += ip6table_filter.o
+ obj-$(CONFIG_IP6_NF_MANGLE) += ip6table_mangle.o
++obj-$(CONFIG_IP6_NF_TARGET_IMQ) += ip6t_IMQ.o
+ obj-$(CONFIG_IP6_NF_TARGET_HL) += ip6t_HL.o
+ obj-$(CONFIG_IP6_NF_QUEUE) += ip6_queue.o
+ obj-$(CONFIG_IP6_NF_TARGET_LOG) += ip6t_LOG.o
+Index: linux-2.6.23-rc6/net/sched/sch_generic.c
+===================================================================
+--- linux-2.6.23-rc6.orig/net/sched/sch_generic.c 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/sched/sch_generic.c 2007-09-21 16:24:02.000000000 +0800
+@@ -190,6 +190,11 @@
+ return ret;
+ }
+
++int qdisc_restart1(struct net_device *dev)
++{
++ return qdisc_restart(dev);
++}
++
+ void __qdisc_run(struct net_device *dev)
+ {
+ do {
+@@ -619,3 +624,4 @@
+ EXPORT_SYMBOL(qdisc_reset);
+ EXPORT_SYMBOL(qdisc_lock_tree);
+ EXPORT_SYMBOL(qdisc_unlock_tree);
++EXPORT_SYMBOL(qdisc_restart1);
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_ROUTE.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv4/ipt_ROUTE.h 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,23 @@
++/* Header file for iptables ipt_ROUTE target
++ *
++ * (C) 2002 by Cédric de Launois <delaunois@info.ucl.ac.be>
++ *
++ * This software is distributed under GNU GPL v2, 1991
++ */
++#ifndef _IPT_ROUTE_H_target
++#define _IPT_ROUTE_H_target
++
++#define IPT_ROUTE_IFNAMSIZ 16
++
++struct ipt_route_target_info {
++ char oif[IPT_ROUTE_IFNAMSIZ]; /* Output Interface Name */
++ char iif[IPT_ROUTE_IFNAMSIZ]; /* Input Interface Name */
++ u_int32_t gw; /* IP address of gateway */
++ u_int8_t flags;
++};
++
++/* Values for "flags" field */
++#define IPT_ROUTE_CONTINUE 0x01
++#define IPT_ROUTE_TEE 0x02
++
++#endif /*_IPT_ROUTE_H_target*/
+Index: linux-2.6.23-rc6/include/linux/netfilter_ipv6/ip6t_ROUTE.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter_ipv6/ip6t_ROUTE.h 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,23 @@
++/* Header file for iptables ip6t_ROUTE target
++ *
++ * (C) 2003 by Cédric de Launois <delaunois@info.ucl.ac.be>
++ *
++ * This software is distributed under GNU GPL v2, 1991
++ */
++#ifndef _IPT_ROUTE_H_target
++#define _IPT_ROUTE_H_target
++
++#define IP6T_ROUTE_IFNAMSIZ 16
++
++struct ip6t_route_target_info {
++ char oif[IP6T_ROUTE_IFNAMSIZ]; /* Output Interface Name */
++ char iif[IP6T_ROUTE_IFNAMSIZ]; /* Input Interface Name */
++ u_int32_t gw[4]; /* IPv6 address of gateway */
++ u_int8_t flags;
++};
++
++/* Values for "flags" field */
++#define IP6T_ROUTE_CONTINUE 0x01
++#define IP6T_ROUTE_TEE 0x02
++
++#endif /*_IP6T_ROUTE_H_target*/
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/ipt_ROUTE.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv4/netfilter/ipt_ROUTE.c 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,463 @@
++/*
++ * This implements the ROUTE target, which enables you to setup unusual
++ * routes not supported by the standard kernel routing table.
++ *
++ * Copyright (C) 2002 Cedric de Launois <delaunois@info.ucl.ac.be>
++ *
++ * v 1.11 2004/11/23
++ *
++ * This software is distributed under GNU GPL v2, 1991
++ */
++
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/ip.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#include <net/netfilter/nf_conntrack.h>
++#include <linux/netfilter_ipv4/ipt_ROUTE.h>
++#include <linux/netdevice.h>
++#include <linux/route.h>
++#include <linux/version.h>
++#include <linux/if_arp.h>
++#include <net/ip.h>
++#include <net/route.h>
++#include <net/icmp.h>
++#include <net/checksum.h>
++
++#if 0
++#define DEBUGP printk
++#else
++#define DEBUGP(format, args...)
++#endif
++
++MODULE_LICENSE("GPL");
++MODULE_AUTHOR("Cedric de Launois <delaunois@info.ucl.ac.be>");
++MODULE_DESCRIPTION("iptables ROUTE target module");
++
++/* Try to route the packet according to the routing keys specified in
++ * route_info. Keys are :
++ * - ifindex :
++ * 0 if no oif preferred,
++ * otherwise set to the index of the desired oif
++ * - route_info->gw :
++ * 0 if no gateway specified,
++ * otherwise set to the next host to which the pkt must be routed
++ * If success, skb->dev is the output device to which the packet must
++ * be sent and skb->dst is not NULL
++ *
++ * RETURN: -1 if an error occured
++ * 1 if the packet was succesfully routed to the
++ * destination desired
++ * 0 if the kernel routing table could not route the packet
++ * according to the keys specified
++ */
++static int route(struct sk_buff *skb,
++ unsigned int ifindex,
++ const struct ipt_route_target_info *route_info)
++{
++ int err;
++ struct rtable *rt;
++ struct iphdr *iph = ip_hdr(skb);
++ struct flowi fl = {
++ .oif = ifindex,
++ .nl_u = {
++ .ip4_u = {
++ .daddr = iph->daddr,
++ .saddr = 0,
++ .tos = RT_TOS(iph->tos),
++ .scope = RT_SCOPE_UNIVERSE,
++ }
++ }
++ };
++
++ /* The destination address may be overloaded by the target */
++ if (route_info->gw)
++ fl.fl4_dst = route_info->gw;
++
++ /* Trying to route the packet using the standard routing table. */
++ if ((err = ip_route_output_key(&rt, &fl))) {
++ if (net_ratelimit())
++ DEBUGP("ipt_ROUTE: couldn't route pkt (err: %i)",err);
++ return -1;
++ }
++
++ /* Drop old route. */
++ dst_release(skb->dst);
++ skb->dst = NULL;
++
++ /* Success if no oif specified or if the oif correspond to the
++ * one desired */
++ if (!ifindex || rt->u.dst.dev->ifindex == ifindex) {
++ skb->dst = &rt->u.dst;
++ skb->dev = skb->dst->dev;
++ skb->protocol = htons(ETH_P_IP);
++ return 1;
++ }
++
++ /* The interface selected by the routing table is not the one
++ * specified by the user. This may happen because the dst address
++ * is one of our own addresses.
++ */
++ if (net_ratelimit())
++ DEBUGP("ipt_ROUTE: failed to route as desired gw=%u.%u.%u.%u oif=%i (got oif=%i)\n",
++ NIPQUAD(route_info->gw), ifindex, rt->u.dst.dev->ifindex);
++
++ return 0;
++}
++
++
++/* Stolen from ip_finish_output2
++ * PRE : skb->dev is set to the device we are leaving by
++ * skb->dst is not NULL
++ * POST: the packet is sent with the link layer header pushed
++ * the packet is destroyed
++ */
++static void ip_direct_send(struct sk_buff *skb)
++{
++ struct dst_entry *dst = skb->dst;
++ struct hh_cache *hh = dst->hh;
++ struct net_device *dev = dst->dev;
++ int hh_len = LL_RESERVED_SPACE(dev);
++
++ /* Be paranoid, rather than too clever. */
++ if (unlikely(skb_headroom(skb) < hh_len && dev->hard_header)) {
++ struct sk_buff *skb2;
++
++ skb2 = skb_realloc_headroom(skb, LL_RESERVED_SPACE(dev));
++ if (skb2 == NULL) {
++ kfree_skb(skb);
++ return;
++ }
++ if (skb->sk)
++ skb_set_owner_w(skb2, skb->sk);
++ kfree_skb(skb);
++ skb = skb2;
++ }
++
++ if (hh) {
++ int hh_alen;
++
++ read_lock_bh(&hh->hh_lock);
++ hh_alen = HH_DATA_ALIGN(hh->hh_len);
++ memcpy(skb->data - hh_alen, hh->hh_data, hh_alen);
++ read_unlock_bh(&hh->hh_lock);
++ skb_push(skb, hh->hh_len);
++ hh->hh_output(skb);
++ } else if (dst->neighbour)
++ dst->neighbour->output(skb);
++ else {
++ if (net_ratelimit())
++ DEBUGP(KERN_DEBUG "ipt_ROUTE: no hdr & no neighbour cache!\n");
++ kfree_skb(skb);
++ }
++}
++
++
++/* PRE : skb->dev is set to the device we are leaving by
++ * POST: - the packet is directly sent to the skb->dev device, without
++ * pushing the link layer header.
++ * - the packet is destroyed
++ */
++static inline int dev_direct_send(struct sk_buff *skb)
++{
++ return dev_queue_xmit(skb);
++}
++
++
++static unsigned int route_oif(const struct ipt_route_target_info *route_info,
++ struct sk_buff *skb)
++{
++ unsigned int ifindex = 0;
++ struct net_device *dev_out = NULL;
++
++ /* The user set the interface name to use.
++ * Getting the current interface index.
++ */
++ if ((dev_out = dev_get_by_name(route_info->oif))) {
++ ifindex = dev_out->ifindex;
++ } else {
++ /* Unknown interface name : packet dropped */
++ if (net_ratelimit())
++ DEBUGP("ipt_ROUTE: oif interface %s not found\n", route_info->oif);
++ return NF_DROP;
++ }
++
++ /* Trying the standard way of routing packets */
++ switch (route(skb, ifindex, route_info)) {
++ case 1:
++ dev_put(dev_out);
++ if (route_info->flags & IPT_ROUTE_CONTINUE)
++ return IPT_CONTINUE;
++
++ ip_direct_send(skb);
++ return NF_STOLEN;
++
++ case 0:
++ /* Failed to send to oif. Trying the hard way */
++ if (route_info->flags & IPT_ROUTE_CONTINUE)
++ return NF_DROP;
++
++ if (net_ratelimit())
++ DEBUGP("ipt_ROUTE: forcing the use of %i\n",
++ ifindex);
++
++ /* We have to force the use of an interface.
++ * This interface must be a tunnel interface since
++ * otherwise we can't guess the hw address for
++ * the packet. For a tunnel interface, no hw address
++ * is needed.
++ */
++ if ((dev_out->type != ARPHRD_TUNNEL)
++ && (dev_out->type != ARPHRD_IPGRE)) {
++ if (net_ratelimit())
++ DEBUGP("ipt_ROUTE: can't guess the hw addr !\n");
++ dev_put(dev_out);
++ return NF_DROP;
++ }
++
++ /* Send the packet. This will also free skb
++ * Do not go through the POST_ROUTING hook because
++ * skb->dst is not set and because it will probably
++ * get confused by the destination IP address.
++ */
++ skb->dev = dev_out;
++ dev_direct_send(skb);
++ dev_put(dev_out);
++ return NF_STOLEN;
++
++ default:
++ /* Unexpected error */
++ dev_put(dev_out);
++ return NF_DROP;
++ }
++}
++
++
++static unsigned int route_iif(const struct ipt_route_target_info *route_info,
++ struct sk_buff *skb)
++{
++ struct net_device *dev_in = NULL;
++
++ /* Getting the current interface index. */
++ if (!(dev_in = dev_get_by_name(route_info->iif))) {
++ if (net_ratelimit())
++ DEBUGP("ipt_ROUTE: iif interface %s not found\n", route_info->iif);
++ return NF_DROP;
++ }
++
++ skb->dev = dev_in;
++ dst_release(skb->dst);
++ skb->dst = NULL;
++
++ netif_rx(skb);
++ dev_put(dev_in);
++ return NF_STOLEN;
++}
++
++
++static unsigned int route_gw(const struct ipt_route_target_info *route_info,
++ struct sk_buff *skb)
++{
++ if (route(skb, 0, route_info)!=1)
++ return NF_DROP;
++
++ if (route_info->flags & IPT_ROUTE_CONTINUE)
++ return IPT_CONTINUE;
++
++ ip_direct_send(skb);
++ return NF_STOLEN;
++}
++
++
++/* To detect and deter routed packet loopback when using the --tee option,
++ * we take a page out of the raw.patch book: on the copied skb, we set up
++ * a fake ->nfct entry, pointing to the local &route_tee_track. We skip
++ * routing packets when we see they already have that ->nfct.
++ */
++
++static struct nf_conn route_tee_track;
++
++static unsigned int ipt_route_target(struct sk_buff **pskb,
++ const struct net_device *in,
++ const struct net_device *out,
++ unsigned int hooknum,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ const struct xt_target *target,
++#endif
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ const void *targinfo,
++ void *userinfo)
++#else
++ const void *targinfo)
++#endif
++{
++ const struct ipt_route_target_info *route_info = targinfo;
++ struct sk_buff *skb = *pskb;
++ unsigned int res;
++
++ if (skb->nfct == &route_tee_track.ct_general) {
++ /* Loopback - a packet we already routed, is to be
++ * routed another time. Avoid that, now.
++ */
++ if (net_ratelimit())
++ DEBUGP(KERN_DEBUG "ipt_ROUTE: loopback - DROP!\n");
++ return NF_DROP;
++ }
++
++ /* If we are at PREROUTING or INPUT hook
++ * the TTL isn't decreased by the IP stack
++ */
++ if (hooknum == NF_IP_PRE_ROUTING ||
++ hooknum == NF_IP_LOCAL_IN) {
++
++ struct iphdr *iph = ip_hdr(skb);
++
++ if (iph->ttl <= 1) {
++ struct rtable *rt;
++ struct flowi fl = {
++ .oif = 0,
++ .nl_u = {
++ .ip4_u = {
++ .daddr = iph->daddr,
++ .saddr = iph->saddr,
++ .tos = RT_TOS(iph->tos),
++ .scope = ((iph->tos & RTO_ONLINK) ?
++ RT_SCOPE_LINK :
++ RT_SCOPE_UNIVERSE)
++ }
++ }
++ };
++
++ if (ip_route_output_key(&rt, &fl)) {
++ return NF_DROP;
++ }
++
++ if (skb->dev == rt->u.dst.dev) {
++ /* Drop old route. */
++ dst_release(skb->dst);
++ skb->dst = &rt->u.dst;
++
++ /* this will traverse normal stack, and
++ * thus call conntrack on the icmp packet */
++ icmp_send(skb, ICMP_TIME_EXCEEDED,
++ ICMP_EXC_TTL, 0);
++ }
++
++ return NF_DROP;
++ }
++
++ /*
++ * If we are at INPUT the checksum must be recalculated since
++ * the length could change as the result of a defragmentation.
++ */
++ if(hooknum == NF_IP_LOCAL_IN) {
++ iph->ttl = iph->ttl - 1;
++ iph->check = 0;
++ iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
++ } else {
++ ip_decrease_ttl(iph);
++ }
++ }
++
++ if ((route_info->flags & IPT_ROUTE_TEE)) {
++ /*
++ * Copy the *pskb, and route the copy. Will later return
++ * IPT_CONTINUE for the original skb, which should continue
++ * on its way as if nothing happened. The copy should be
++ * independantly delivered to the ROUTE --gw.
++ */
++ skb = skb_copy(*pskb, GFP_ATOMIC);
++ if (!skb) {
++ if (net_ratelimit())
++ DEBUGP(KERN_DEBUG "ipt_ROUTE: copy failed!\n");
++ return IPT_CONTINUE;
++ }
++ }
++
++ /* Tell conntrack to forget this packet since it may get confused
++ * when a packet is leaving with dst address == our address.
++ * Good idea ? Dunno. Need advice.
++ *
++ * NEW: mark the skb with our &route_tee_track, so we avoid looping
++ * on any already routed packet.
++ */
++ if (!(route_info->flags & IPT_ROUTE_CONTINUE)) {
++ nf_conntrack_put(skb->nfct);
++ skb->nfct = &route_tee_track.ct_general;
++ skb->nfctinfo = IP_CT_NEW;
++ nf_conntrack_get(skb->nfct);
++ }
++
++ if (route_info->oif[0] != '\0') {
++ res = route_oif(route_info, skb);
++ } else if (route_info->iif[0] != '\0') {
++ res = route_iif(route_info, skb);
++ } else if (route_info->gw) {
++ res = route_gw(route_info, skb);
++ } else {
++ if (net_ratelimit())
++ DEBUGP(KERN_DEBUG "ipt_ROUTE: no parameter !\n");
++ res = IPT_CONTINUE;
++ }
++
++ if ((route_info->flags & IPT_ROUTE_TEE))
++ res = IPT_CONTINUE;
++
++ return res;
++}
++
++
++static bool ipt_route_checkentry(const char *tablename,
++ const void *e,
++ const struct xt_target *target,
++ void *targinfo,
++ unsigned int hook_mask)
++{
++ if (strcmp(tablename, "mangle") != 0) {
++ printk("ipt_ROUTE: bad table `%s', use the `mangle' table.\n",
++ tablename);
++ return 0;
++ }
++
++ if (hook_mask & ~( (1 << NF_IP_PRE_ROUTING)
++ | (1 << NF_IP_LOCAL_IN)
++ | (1 << NF_IP_FORWARD)
++ | (1 << NF_IP_LOCAL_OUT)
++ | (1 << NF_IP_POST_ROUTING))) {
++ printk("ipt_ROUTE: bad hook\n");
++ return 0;
++ }
++
++ return 1;
++}
++
++
++static struct ipt_target ipt_route_reg = {
++ .name = "ROUTE",
++ .target = ipt_route_target,
++ .targetsize = sizeof(struct ipt_route_target_info),
++ .checkentry = ipt_route_checkentry,
++ .me = THIS_MODULE,
++};
++
++static int __init init(void)
++{
++ /* Set up fake conntrack (stolen from raw.patch):
++ - to never be deleted, not in any hashes */
++ atomic_set(&route_tee_track.ct_general.use, 1);
++ /* - and look it like as a confirmed connection */
++ set_bit(IPS_CONFIRMED_BIT, &route_tee_track.status);
++ /* Initialize fake conntrack so that NAT will skip it */
++ route_tee_track.status |= IPS_NAT_DONE_MASK;
++
++ return xt_register_target(&ipt_route_reg);
++}
++
++
++static void __exit fini(void)
++{
++ xt_unregister_target(&ipt_route_reg);
++}
++
++module_init(init);
++module_exit(fini);
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Kconfig 2007-09-21 16:24:02.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Kconfig 2007-09-21 16:24:03.000000000 +0800
+@@ -562,5 +562,22 @@
+ To compile it as a module, choose M here. If unsure, say N.
+
+
++config IP_NF_TARGET_ROUTE
++ tristate 'ROUTE target support'
++ depends on IP_NF_MANGLE
++ help
++ This option adds a `ROUTE' target, which enables you to setup unusual
++ routes. For example, the ROUTE lets you route a received packet through
++ an interface or towards a host, even if the regular destination of the
++ packet is the router itself. The ROUTE target is also able to change the
++ incoming interface of a packet.
++
++ The target can be or not a final target. It has to be used inside the
++ mangle table.
++
++ If you want to compile it as a module, say M here and read
++ Documentation/modules.txt. The module will be called ipt_ROUTE.o.
++ If unsure, say `N'.
++
+ endmenu
+
+Index: linux-2.6.23-rc6/net/ipv4/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/netfilter/Makefile 2007-09-21 16:24:02.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/netfilter/Makefile 2007-09-21 16:24:03.000000000 +0800
+@@ -61,6 +61,7 @@
+ obj-$(CONFIG_IP_NF_TARGET_IMQ) += ipt_IMQ.o
+ obj-$(CONFIG_IP_NF_TARGET_MASQUERADE) += ipt_MASQUERADE.o
+ obj-$(CONFIG_IP_NF_TARGET_REDIRECT) += ipt_REDIRECT.o
++obj-$(CONFIG_IP_NF_TARGET_ROUTE) += ipt_ROUTE.o
+ obj-$(CONFIG_IP_NF_TARGET_NETMAP) += ipt_NETMAP.o
+ obj-$(CONFIG_IP_NF_TARGET_SAME) += ipt_SAME.o
+ obj-$(CONFIG_IP_NF_TARGET_LOG) += ipt_LOG.o
+Index: linux-2.6.23-rc6/net/ipv6/ndisc.c
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv6/ndisc.c 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv6/ndisc.c 2007-09-21 16:24:03.000000000 +0800
+@@ -154,6 +154,8 @@
+ .gc_thresh3 = 1024,
+ };
+
++EXPORT_SYMBOL(nd_tbl);
++
+ /* ND options */
+ struct ndisc_options {
+ struct nd_opt_hdr *nd_opt_array[__ND_OPT_ARRAY_MAX];
+Index: linux-2.6.23-rc6/net/ipv6/netfilter/ip6t_ROUTE.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/ipv6/netfilter/ip6t_ROUTE.c 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,330 @@
++/*
++ * This implements the ROUTE v6 target, which enables you to setup unusual
++ * routes not supported by the standard kernel routing table.
++ *
++ * Copyright (C) 2003 Cedric de Launois <delaunois@info.ucl.ac.be>
++ *
++ * v 1.1 2004/11/23
++ *
++ * This software is distributed under GNU GPL v2, 1991
++ */
++
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/ipv6.h>
++#include <linux/netfilter_ipv6/ip6_tables.h>
++#include <linux/netfilter_ipv6/ip6t_ROUTE.h>
++#include <linux/netdevice.h>
++#include <linux/version.h>
++#include <net/ipv6.h>
++#include <net/ndisc.h>
++#include <net/ip6_route.h>
++#include <linux/icmpv6.h>
++
++#if 1
++#define DEBUGP printk
++#else
++#define DEBUGP(format, args...)
++#endif
++
++#define NIP6(addr) \
++ ntohs((addr).s6_addr16[0]), \
++ ntohs((addr).s6_addr16[1]), \
++ ntohs((addr).s6_addr16[2]), \
++ ntohs((addr).s6_addr16[3]), \
++ ntohs((addr).s6_addr16[4]), \
++ ntohs((addr).s6_addr16[5]), \
++ ntohs((addr).s6_addr16[6]), \
++ ntohs((addr).s6_addr16[7])
++
++/* Route the packet according to the routing keys specified in
++ * route_info. Keys are :
++ * - ifindex :
++ * 0 if no oif preferred,
++ * otherwise set to the index of the desired oif
++ * - route_info->gw :
++ * 0 if no gateway specified,
++ * otherwise set to the next host to which the pkt must be routed
++ * If success, skb->dev is the output device to which the packet must
++ * be sent and skb->dst is not NULL
++ *
++ * RETURN: 1 if the packet was succesfully routed to the
++ * destination desired
++ * 0 if the kernel routing table could not route the packet
++ * according to the keys specified
++ */
++static int
++route6(struct sk_buff *skb,
++ unsigned int ifindex,
++ const struct ip6t_route_target_info *route_info)
++{
++ struct rt6_info *rt = NULL;
++ struct ipv6hdr *ipv6h = ipv6_hdr(skb);
++ struct in6_addr *gw = (struct in6_addr*)&route_info->gw;
++
++ DEBUGP("ip6t_ROUTE: called with: ");
++ DEBUGP("DST=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ", NIP6(ipv6h->daddr));
++ DEBUGP("GATEWAY=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ", NIP6(*gw));
++ DEBUGP("OUT=%s\n", route_info->oif);
++
++ if (ipv6_addr_any(gw))
++ rt = rt6_lookup(&ipv6h->daddr, &ipv6h->saddr, ifindex, 1);
++ else
++ rt = rt6_lookup(gw, &ipv6h->saddr, ifindex, 1);
++
++ if (!rt)
++ goto no_route;
++
++ DEBUGP("ip6t_ROUTE: routing gives: ");
++ DEBUGP("DST=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ", NIP6(rt->rt6i_dst.addr));
++ DEBUGP("GATEWAY=%04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x ", NIP6(rt->rt6i_gateway));
++ DEBUGP("OUT=%s\n", rt->rt6i_dev->name);
++
++ if (ifindex && rt->rt6i_dev->ifindex!=ifindex)
++ goto wrong_route;
++
++ if (!rt->rt6i_nexthop) {
++ DEBUGP("ip6t_ROUTE: discovering neighbour\n");
++ rt->rt6i_nexthop = ndisc_get_neigh(rt->rt6i_dev, &rt->rt6i_dst.addr);
++ }
++
++ /* Drop old route. */
++ dst_release(skb->dst);
++ skb->dst = &rt->u.dst;
++ skb->dev = rt->rt6i_dev;
++ return 1;
++
++ wrong_route:
++ dst_release(&rt->u.dst);
++ no_route:
++ if (!net_ratelimit())
++ return 0;
++
++ printk("ip6t_ROUTE: no explicit route found ");
++ if (ifindex)
++ printk("via interface %s ", route_info->oif);
++ if (!ipv6_addr_any(gw))
++ printk("via gateway %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x", NIP6(*gw));
++ printk("\n");
++ return 0;
++}
++
++
++/* Stolen from ip6_output_finish
++ * PRE : skb->dev is set to the device we are leaving by
++ * skb->dst is not NULL
++ * POST: the packet is sent with the link layer header pushed
++ * the packet is destroyed
++ */
++static void ip_direct_send(struct sk_buff *skb)
++{
++ struct dst_entry *dst = skb->dst;
++ struct hh_cache *hh = dst->hh;
++
++ if (hh) {
++ read_lock_bh(&hh->hh_lock);
++ memcpy(skb->data - 16, hh->hh_data, 16);
++ read_unlock_bh(&hh->hh_lock);
++ skb_push(skb, hh->hh_len);
++ hh->hh_output(skb);
++ } else if (dst->neighbour)
++ dst->neighbour->output(skb);
++ else {
++ if (net_ratelimit())
++ DEBUGP(KERN_DEBUG "ip6t_ROUTE: no hdr & no neighbour cache!\n");
++ kfree_skb(skb);
++ }
++}
++
++
++static unsigned int
++route6_oif(const struct ip6t_route_target_info *route_info,
++ struct sk_buff *skb)
++{
++ unsigned int ifindex = 0;
++ struct net_device *dev_out = NULL;
++
++ /* The user set the interface name to use.
++ * Getting the current interface index.
++ */
++ if ((dev_out = dev_get_by_name(route_info->oif))) {
++ ifindex = dev_out->ifindex;
++ } else {
++ /* Unknown interface name : packet dropped */
++ if (net_ratelimit())
++ DEBUGP("ip6t_ROUTE: oif interface %s not found\n", route_info->oif);
++
++ if (route_info->flags & IP6T_ROUTE_CONTINUE)
++ return IP6T_CONTINUE;
++ else
++ return NF_DROP;
++ }
++
++ /* Trying the standard way of routing packets */
++ if (route6(skb, ifindex, route_info)) {
++ dev_put(dev_out);
++ if (route_info->flags & IP6T_ROUTE_CONTINUE)
++ return IP6T_CONTINUE;
++
++ ip_direct_send(skb);
++ return NF_STOLEN;
++ } else
++ return NF_DROP;
++}
++
++
++static unsigned int
++route6_gw(const struct ip6t_route_target_info *route_info,
++ struct sk_buff *skb)
++{
++ if (route6(skb, 0, route_info)) {
++ if (route_info->flags & IP6T_ROUTE_CONTINUE)
++ return IP6T_CONTINUE;
++
++ ip_direct_send(skb);
++ return NF_STOLEN;
++ } else
++ return NF_DROP;
++}
++
++
++static unsigned int
++ip6t_route_target(struct sk_buff **pskb,
++ const struct net_device *in,
++ const struct net_device *out,
++ unsigned int hooknum,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ const struct xt_target *target,
++#endif
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ const void *targinfo,
++ void *userinfo)
++#else
++ const void *targinfo)
++#endif
++{
++ const struct ip6t_route_target_info *route_info = targinfo;
++ struct sk_buff *skb = *pskb;
++ struct in6_addr *gw = (struct in6_addr*)&route_info->gw;
++ unsigned int res;
++
++ if (route_info->flags & IP6T_ROUTE_CONTINUE)
++ goto do_it;
++
++ /* If we are at PREROUTING or INPUT hook
++ * the TTL isn't decreased by the IP stack
++ */
++ if (hooknum == NF_IP6_PRE_ROUTING ||
++ hooknum == NF_IP6_LOCAL_IN) {
++
++ struct ipv6hdr *ipv6h = ipv6_hdr(skb);
++
++ if (ipv6h->hop_limit <= 1) {
++ /* Force OUTPUT device used as source address */
++ skb->dev = skb->dst->dev;
++
++ icmpv6_send(skb, ICMPV6_TIME_EXCEED,
++ ICMPV6_EXC_HOPLIMIT, 0, skb->dev);
++
++ return NF_DROP;
++ }
++
++ ipv6h->hop_limit--;
++ }
++
++ if ((route_info->flags & IP6T_ROUTE_TEE)) {
++ /*
++ * Copy the *pskb, and route the copy. Will later return
++ * IP6T_CONTINUE for the original skb, which should continue
++ * on its way as if nothing happened. The copy should be
++ * independantly delivered to the ROUTE --gw.
++ */
++ skb = skb_copy(*pskb, GFP_ATOMIC);
++ if (!skb) {
++ if (net_ratelimit())
++ DEBUGP(KERN_DEBUG "ip6t_ROUTE: copy failed!\n");
++ return IP6T_CONTINUE;
++ }
++ }
++
++do_it:
++ if (route_info->oif[0]) {
++ res = route6_oif(route_info, skb);
++ } else if (!ipv6_addr_any(gw)) {
++ res = route6_gw(route_info, skb);
++ } else {
++ if (net_ratelimit())
++ DEBUGP(KERN_DEBUG "ip6t_ROUTE: no parameter !\n");
++ res = IP6T_CONTINUE;
++ }
++
++ if ((route_info->flags & IP6T_ROUTE_TEE))
++ res = IP6T_CONTINUE;
++
++ return res;
++}
++
++
++static int
++ip6t_route_checkentry(const char *tablename,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ const void *entry,
++#else
++ const struct ip6t_entry *entry
++#endif
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ const struct xt_target *target,
++#endif
++ void *targinfo,
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ unsigned int targinfosize,
++#endif
++ unsigned int hook_mask)
++{
++ if (strcmp(tablename, "mangle") != 0) {
++ printk("ip6t_ROUTE: can only be called from \"mangle\" table.\n");
++ return 0;
++ }
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ if (targinfosize != IP6T_ALIGN(sizeof(struct ip6t_route_target_info))) {
++ printk(KERN_WARNING "ip6t_ROUTE: targinfosize %u != %Zu\n",
++ targinfosize,
++ IP6T_ALIGN(sizeof(struct ip6t_route_target_info)));
++ return 0;
++ }
++#endif
++
++ return 1;
++}
++
++
++static struct ip6t_target ip6t_route_reg = {
++ .name = "ROUTE",
++ .target = ip6t_route_target,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,17)
++ .targetsize = sizeof(struct ip6t_route_target_info),
++#endif
++ .checkentry = ip6t_route_checkentry,
++ .me = THIS_MODULE
++};
++
++
++static int __init init(void)
++{
++ printk(KERN_DEBUG "registering ipv6 ROUTE target\n");
++ if (xt_register_target(&ip6t_route_reg))
++ return -EINVAL;
++
++ return 0;
++}
++
++
++static void __exit fini(void)
++{
++ xt_unregister_target(&ip6t_route_reg);
++}
++
++module_init(init);
++module_exit(fini);
++MODULE_LICENSE("GPL");
+Index: linux-2.6.23-rc6/net/ipv6/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv6/netfilter/Kconfig 2007-09-21 16:24:02.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv6/netfilter/Kconfig 2007-09-21 16:24:03.000000000 +0800
+@@ -209,5 +209,18 @@
+ If you want to compile it as a module, say M here and read
+ <file:Documentation/kbuild/modules.txt>. If unsure, say `N'.
+
++config IP6_NF_TARGET_ROUTE
++ tristate 'ROUTE target support'
++ depends on IP6_NF_MANGLE
++ help
++ This option adds a `ROUTE' target, which enables you to setup unusual
++ routes. The ROUTE target is also able to change the incoming interface
++ of a packet.
++
++ The target can be or not a final target. It has to be used inside the
++ mangle table.
++
++ Not working as a module.
++
+ endmenu
+
+Index: linux-2.6.23-rc6/net/ipv6/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv6/netfilter/Makefile 2007-09-21 16:24:02.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv6/netfilter/Makefile 2007-09-21 16:24:03.000000000 +0800
+@@ -20,6 +20,7 @@
+ obj-$(CONFIG_IP6_NF_RAW) += ip6table_raw.o
+ obj-$(CONFIG_IP6_NF_MATCH_HL) += ip6t_hl.o
+ obj-$(CONFIG_IP6_NF_TARGET_REJECT) += ip6t_REJECT.o
++obj-$(CONFIG_IP6_NF_TARGET_ROUTE) += ip6t_ROUTE.o
+ obj-$(CONFIG_IP6_NF_MATCH_MH) += ip6t_mh.o
+
+ # objects for l3 independent conntrack
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/netfilter/oot_conntrack.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter/oot_conntrack.h 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,5 @@
++#if defined(CONFIG_IP_NF_CONNTRACK) || defined(CONFIG_IP_NF_CONNTRACK_MODULE)
++# include <linux/netfilter_ipv4/ip_conntrack.h>
++#else /* linux-2.6.20+ */
++# include <net/netfilter/nf_nat_rule.h>
++#endif
+Index: linux-2.6.23-rc6/include/linux/netfilter/oot_trans.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter/oot_trans.h 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,14 @@
++/* Out of tree workarounds */
++#include <linux/version.h>
++#if LINUX_VERSION_CODE <= KERNEL_VERSION(2, 6, 18)
++# define HAVE_MATCHINFOSIZE 1
++# define HAVE_TARGUSERINFO 1
++# define HAVE_TARGINFOSIZE 1
++#endif
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 20)
++# define nfmark mark
++#endif
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2, 6, 21)
++# define tcp_v4_check(tcph, tcph_sz, s, d, csp) \
++ tcp_v4_check((tcph_sz), (s), (d), (csp))
++#endif
+Index: linux-2.6.23-rc6/include/linux/netfilter/xt_CHAOS.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter/xt_CHAOS.h 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,14 @@
++#ifndef _LINUX_XT_CHAOS_H
++#define _LINUX_XT_CHAOS_H 1
++
++enum xt_chaos_variant {
++ XTCHAOS_NORMAL,
++ XTCHAOS_TARPIT,
++ XTCHAOS_DELUDE,
++};
++
++struct xt_chaos_info {
++ enum xt_chaos_variant variant;
++};
++
++#endif /* _LINUX_XT_CHAOS_H */
+Index: linux-2.6.23-rc6/include/linux/netfilter/xt_portscan.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/linux/netfilter/xt_portscan.h 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,8 @@
++#ifndef _LINUX_XT_PORTSCAN_H
++#define _LINUX_XT_PORTSCAN_H 1
++
++struct xt_portscan_info {
++ unsigned int match_stealth, match_syn, match_cn, match_gr;
++};
++
++#endif /* _LINUX_XT_PORTSCAN_H */
+Index: linux-2.6.23-rc6/net/netfilter/find_match.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/netfilter/find_match.c 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,39 @@
++/*
++ xt_request_find_match
++ by Jan Engelhardt <jengelh [at] gmx de>, 2006 - 2007
++
++ Based upon linux-2.6.18.5/net/netfilter/x_tables.c:
++ Copyright (C) 2006-2006 Harald Welte <laforge@netfilter.org>
++ This program is free software; you can redistribute it and/or modify
++ it under the terms of the GNU General Public License version 2 as
++ published by the Free Software Foundation.
++*/
++#include <linux/err.h>
++#include <linux/netfilter_arp.h>
++#include <linux/socket.h>
++#include <linux/netfilter/x_tables.h>
++
++/*
++ * Yeah this code is sub-optimal, but the function is missing in
++ * mainline so far. -jengelh
++ */
++static struct xt_match *xt_request_find_match_lo(int af, const char *name,
++ u8 revision)
++{
++ static const char *const xt_prefix[] = {
++ [AF_INET] = "ip",
++ [AF_INET6] = "ip6",
++ [NF_ARP] = "arp",
++ };
++ struct xt_match *match;
++
++ match = try_then_request_module(xt_find_match(af, name, revision),
++ "%st_%s", xt_prefix[af], name);
++ if(IS_ERR(match) || match == NULL)
++ return NULL;
++
++ return match;
++}
++
++/* In case it goes into mainline, let this out-of-tree package compile */
++#define xt_request_find_match xt_request_find_match_lo
+Index: linux-2.6.23-rc6/net/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/netfilter/Kconfig 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/netfilter/Kconfig 2007-09-21 16:24:03.000000000 +0800
+@@ -265,6 +265,14 @@
+
+ # alphabetically ordered list of targets
+
++config NETFILTER_XT_TARGET_CHAOS
++ tristate '"CHAOS" target support'
++ depends on NETFILTER_XTABLES
++ help
++ This option adds a `CHAOS' target.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
+ config NETFILTER_XT_TARGET_CLASSIFY
+ tristate '"CLASSIFY" target support'
+ depends on NETFILTER_XTABLES
+@@ -292,6 +300,14 @@
+ <file:Documentation/kbuild/modules.txt>. The module will be called
+ ipt_CONNMARK.ko. If unsure, say `N'.
+
++config NETFILTER_XT_TARGET_DELUDE
++ tristate '"DELUDE" target support'
++ depends on NETFILTER_XTABLES
++ help
++ This option adds a `DELUDE' target.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
+ config NETFILTER_XT_TARGET_DSCP
+ tristate '"DSCP" target support'
+ depends on NETFILTER_XTABLES
+@@ -556,6 +572,14 @@
+
+ To compile it as a module, choose M here. If unsure, say N.
+
++config NETFILTER_XT_MATCH_PORTSCAN
++ tristate '"portscan" match support'
++ depends on NETFILTER_XTABLES
++ help
++ This option adds a 'portscan' match support.
++
++ To compile it as a module, choose M here. If unsure, say N.
++
+ config NETFILTER_XT_MATCH_MULTIPORT
+ tristate "Multiple port match support"
+ depends on NETFILTER_XTABLES
+Index: linux-2.6.23-rc6/net/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/net/netfilter/Makefile 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/netfilter/Makefile 2007-09-21 16:24:03.000000000 +0800
+@@ -38,8 +38,10 @@
+ obj-$(CONFIG_NETFILTER_XTABLES) += x_tables.o xt_tcpudp.o
+
+ # targets
++obj-$(CONFIG_NETFILTER_XT_TARGET_CHAOS) += xt_CHAOS.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CLASSIFY) += xt_CLASSIFY.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_CONNMARK) += xt_CONNMARK.o
++obj-$(CONFIG_NETFILTER_XT_TARGET_DELUDE) += xt_DELUDE.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_DSCP) += xt_DSCP.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_MARK) += xt_MARK.o
+ obj-$(CONFIG_NETFILTER_XT_TARGET_NFQUEUE) += xt_NFQUEUE.o
+@@ -66,6 +68,7 @@
+ obj-$(CONFIG_NETFILTER_XT_MATCH_MARK) += xt_mark.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_MULTIPORT) += xt_multiport.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_POLICY) += xt_policy.o
++obj-$(CONFIG_NETFILTER_XT_MATCH_PORTSCAN) += xt_portscan.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_PKTTYPE) += xt_pkttype.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_QUOTA) += xt_quota.o
+ obj-$(CONFIG_NETFILTER_XT_MATCH_REALM) += xt_realm.o
+Index: linux-2.6.23-rc6/net/netfilter/xt_CHAOS.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/netfilter/xt_CHAOS.c 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,204 @@
++/*
++ CHAOS target for netfilter
++
++ Copyright © Jan Engelhardt <jengelh [at] gmx de>, 2006 - 2007
++ This program is free software; you can redistribute it and/or modify
++ it under the terms of the GNU General Public License version 2 as
++ published by the Free Software Foundation.
++*/
++#include <linux/icmp.h>
++#include <linux/in.h>
++#include <linux/ip.h>
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/stat.h>
++#include <linux/netfilter/x_tables.h>
++#include <linux/netfilter/xt_tcpudp.h>
++#include <linux/netfilter_ipv4/ipt_REJECT.h>
++#include <net/ip.h>
++#include <linux/netfilter/xt_CHAOS.h>
++#include "find_match.c"
++#include <linux/netfilter/oot_trans.h>
++#define PFX KBUILD_MODNAME ": "
++
++/* Module parameters */
++static unsigned int reject_percentage = ~0U * .01;
++static unsigned int delude_percentage = ~0U * .0101;
++module_param(reject_percentage, uint, S_IRUGO | S_IWUSR);
++module_param(delude_percentage, uint, S_IRUGO | S_IWUSR);
++
++/* References to other matches/targets */
++static struct xt_match *xm_tcp;
++static struct xt_target *xt_delude, *xt_reject, *xt_tarpit;
++
++static int have_delude, have_tarpit;
++
++/* Static data for other matches/targets */
++static const struct ipt_reject_info reject_params = {
++ .with = ICMP_HOST_UNREACH,
++};
++
++static const struct xt_tcp tcp_params = {
++ .spts = {0, ~0},
++ .dpts = {0, ~0},
++};
++
++/* CHAOS functions */
++static void xt_chaos_total(const struct xt_chaos_info *info,
++ struct sk_buff **pskb, const struct net_device *in,
++ const struct net_device *out, unsigned int hooknum)
++{
++ const int protoff = ip_hdrlen(*pskb);
++ const int offset = ntohs(ip_hdr(*pskb)->frag_off) & IP_OFFSET;
++ const struct xt_target *destiny;
++ int hotdrop = 0, ret;
++
++ ret = xm_tcp->match(*pskb, in, out, xm_tcp, &tcp_params,
++ offset, protoff, &hotdrop);
++ if(!ret || hotdrop || (unsigned int)net_random() > delude_percentage)
++ return;
++
++ destiny = (info->variant == XTCHAOS_TARPIT) ? xt_tarpit : xt_delude;
++#ifdef HAVE_TARGUSERINFO
++ destiny->target(pskb, in, out, hooknum, destiny, NULL, NULL);
++#else
++ destiny->target(pskb, in, out, hooknum, destiny, NULL);
++#endif
++ return;
++}
++
++static unsigned int xt_chaos_target(struct sk_buff **pskb,
++ const struct net_device *in, const struct net_device *out,
++ unsigned int hooknum, const struct xt_target *target, const void *targinfo
++#ifdef HAVE_TARGUSERINFO
++ ,
++ void *userinfo
++#endif
++ )
++{
++ /* Equivalent to:
++ * -A chaos -m statistic --mode random --probability \
++ * $reject_percentage -j REJECT --reject-with host-unreach;
++ * -A chaos -p tcp -m statistic --mode random --probability \
++ * $delude_percentage -j DELUDE;
++ * -A chaos -j DROP;
++ */
++ const struct xt_chaos_info *info = targinfo;
++
++ if((unsigned int)net_random() <= reject_percentage)
++#ifdef HAVE_TARGUSERINFO
++ return xt_reject->target(pskb, in, out, hooknum, target,
++ &reject_params, userinfo);
++#else
++ return xt_reject->target(pskb, in, out, hooknum, target,
++ &reject_params);
++#endif
++
++ /* TARPIT/DELUDE may not be called from the OUTPUT chain */
++ if(ip_hdr(*pskb)->protocol == IPPROTO_TCP &&
++ info->variant != XTCHAOS_NORMAL && hooknum != NF_IP_LOCAL_OUT)
++ xt_chaos_total(info, pskb, in, out, hooknum);
++
++ return NF_DROP;
++}
++
++static int xt_chaos_checkentry(const char *tablename, const void *entry,
++ const struct xt_target *target, void *targinfo,
++#ifdef HAVE_TARGINFOSIZE
++ unsigned int targinfosize,
++#endif
++ unsigned int hook_mask)
++{
++ const struct xt_chaos_info *info = targinfo;
++ if(info->variant == XTCHAOS_DELUDE && !have_delude) {
++ printk(KERN_WARNING PFX "Error: Cannot use --delude when "
++ "DELUDE module not available\n");
++ return 0;
++ }
++ if(info->variant == XTCHAOS_TARPIT && !have_tarpit) {
++ printk(KERN_WARNING PFX "Error: Cannot use --tarpit when "
++ "TARPIT module not available\n");
++ return 0;
++ }
++ return 1;
++}
++
++static struct xt_target xt_chaos_info = {
++ .name = "CHAOS",
++ .target = xt_chaos_target,
++ .checkentry = xt_chaos_checkentry,
++ .table = "filter",
++ .targetsize = sizeof(struct xt_chaos_info),
++ .hooks = (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD) |
++ (1 << NF_IP_LOCAL_OUT),
++ .family = AF_INET,
++ .me = THIS_MODULE,
++};
++
++static int __init xt_chaos_init(void)
++{
++ int ret = -EINVAL;
++
++ xm_tcp = xt_request_find_match(AF_INET, "tcp", 0);
++ if(xm_tcp == NULL) {
++ printk(KERN_WARNING PFX "Error: Could not find or load "
++ "\"tcp\" match\n");
++ return -EINVAL;
++ }
++
++ xt_reject = xt_request_find_target(AF_INET, "REJECT", 0);
++ if(xt_reject == NULL) {
++ printk(KERN_WARNING PFX "Error: Could not find or load "
++ "\"REJECT\" target\n");
++ goto out2;
++ }
++
++ xt_tarpit = xt_request_find_target(AF_INET, "TARPIT", 0);
++ have_tarpit = xt_tarpit != NULL;
++ if(!have_tarpit)
++ printk(KERN_WARNING PFX "Warning: Could not find or load "
++ "\"TARPIT\" target\n");
++
++ xt_delude = xt_request_find_target(AF_INET, "DELUDE", 0);
++ have_delude = xt_delude != NULL;
++ if(!have_delude)
++ printk(KERN_WARNING PFX "Warning: Could not find or load "
++ "\"DELUDE\" target\n");
++
++ if((ret = xt_register_target(&xt_chaos_info)) != 0) {
++ printk(KERN_WARNING PFX "xt_register_target returned "
++ "error %d\n", ret);
++ goto out3;
++ }
++
++ return 0;
++
++ out3:
++ if(have_delude)
++ module_put(xt_delude->me);
++ if(have_tarpit)
++ module_put(xt_tarpit->me);
++ module_put(xt_reject->me);
++ out2:
++ module_put(xm_tcp->me);
++ return ret;
++}
++
++static void __exit xt_chaos_exit(void)
++{
++ xt_unregister_target(&xt_chaos_info);
++ module_put(xm_tcp->me);
++ module_put(xt_reject->me);
++ if(have_delude)
++ module_put(xt_delude->me);
++ if(have_tarpit)
++ module_put(xt_tarpit->me);
++ return;
++}
++
++module_init(xt_chaos_init);
++module_exit(xt_chaos_exit);
++MODULE_AUTHOR("Jan Engelhardt <jengelh@gmx.de>");
++MODULE_DESCRIPTION("netfilter CHAOS target");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("ipt_CHAOS");
+Index: linux-2.6.23-rc6/net/netfilter/xt_DELUDE.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/netfilter/xt_DELUDE.c 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,288 @@
++/*
++ DELUDE target
++ Copyright © Jan Engelhardt <jengelh [at] gmx de>, 2007
++
++ Based upon linux-2.6.18.5/net/ipv4/netfilter/ipt_REJECT.c:
++ (C) 1999-2001 Paul `Rusty' Russell
++ (C) 2002-2004 Netfilter Core Team <coreteam@netfilter.org>
++
++ xt_DELUDE acts like REJECT, but does reply with SYN-ACK on SYN.
++
++ This program is free software; you can redistribute it and/or modify
++ it under the terms of the GNU General Public License version 2 as
++ published by the Free Software Foundation.
++*/
++#include <linux/module.h>
++#include <linux/skbuff.h>
++#include <linux/ip.h>
++#include <linux/random.h>
++#include <linux/tcp.h>
++#include <linux/udp.h>
++#include <linux/icmp.h>
++#include <net/icmp.h>
++#include <net/ip.h>
++#include <net/tcp.h>
++#include <net/route.h>
++#include <net/dst.h>
++#include <linux/netfilter_ipv4/ip_tables.h>
++#ifdef CONFIG_BRIDGE_NETFILTER
++# include <linux/netfilter_bridge.h>
++#endif
++#include <linux/netfilter/oot_trans.h>
++#define PFX KBUILD_MODNAME ": "
++
++static inline struct rtable *route_reverse(struct sk_buff *skb,
++ struct tcphdr *tcph, int hook)
++{
++ struct iphdr *iph = ip_hdr(skb);
++ struct dst_entry *odst;
++ struct flowi fl = {};
++ struct rtable *rt;
++
++ /* We don't require ip forwarding to be enabled to be able to
++ * send a RST reply for bridged traffic. */
++ if (hook != NF_IP_FORWARD
++#ifdef CONFIG_BRIDGE_NETFILTER
++ || (skb->nf_bridge && skb->nf_bridge->mask & BRNF_BRIDGED)
++#endif
++ ) {
++ fl.nl_u.ip4_u.daddr = iph->saddr;
++ if (hook == NF_IP_LOCAL_IN)
++ fl.nl_u.ip4_u.saddr = iph->daddr;
++ fl.nl_u.ip4_u.tos = RT_TOS(iph->tos);
++
++ if (ip_route_output_key(&rt, &fl) != 0)
++ return NULL;
++ } else {
++ /* non-local src, find valid iif to satisfy
++ * rp-filter when calling ip_route_input. */
++ fl.nl_u.ip4_u.daddr = iph->daddr;
++ if (ip_route_output_key(&rt, &fl) != 0)
++ return NULL;
++
++ odst = skb->dst;
++ if (ip_route_input(skb, iph->saddr, iph->daddr,
++ RT_TOS(iph->tos), rt->u.dst.dev) != 0) {
++ dst_release(&rt->u.dst);
++ return NULL;
++ }
++ dst_release(&rt->u.dst);
++ rt = (struct rtable *)skb->dst;
++ skb->dst = odst;
++
++ fl.nl_u.ip4_u.daddr = iph->saddr;
++ fl.nl_u.ip4_u.saddr = iph->daddr;
++ fl.nl_u.ip4_u.tos = RT_TOS(iph->tos);
++ }
++
++ if (rt->u.dst.error) {
++ dst_release(&rt->u.dst);
++ return NULL;
++ }
++
++ fl.proto = IPPROTO_TCP;
++ fl.fl_ip_sport = tcph->dest;
++ fl.fl_ip_dport = tcph->source;
++
++ xfrm_lookup((struct dst_entry **)&rt, &fl, NULL, 0);
++
++ return rt;
++}
++
++static void send_reset(struct sk_buff *oldskb, int hook)
++{
++ struct sk_buff *nskb;
++ struct iphdr *iph = ip_hdr(oldskb);
++ struct tcphdr _otcph, *oth, *tcph;
++ __be16 tmp_port;
++ __be32 tmp_addr;
++ int needs_ack;
++ unsigned int addr_type;
++
++ /* IP header checks: fragment. */
++ if (iph->frag_off & htons(IP_OFFSET))
++ return;
++
++ oth = skb_header_pointer(oldskb, ip_hdrlen(oldskb),
++ sizeof(_otcph), &_otcph);
++ if (oth == NULL)
++ return;
++
++ /* No RST for RST. */
++ if (oth->rst)
++ return;
++
++ /* Check checksum */
++ if (nf_ip_checksum(oldskb, hook, ip_hdrlen(oldskb), IPPROTO_TCP))
++ return;
++
++ /* We need a linear, writeable skb. We also need to expand
++ headroom in case hh_len of incoming interface < hh_len of
++ outgoing interface */
++ nskb = skb_copy_expand(oldskb, LL_MAX_HEADER, skb_tailroom(oldskb),
++ GFP_ATOMIC);
++ if (!nskb)
++ return;
++
++ /* This packet will not be the same as the other: clear nf fields */
++ nf_reset(nskb);
++ nskb->nfmark = 0;
++ skb_init_secmark(nskb);
++
++ skb_shinfo(nskb)->gso_size = 0;
++ skb_shinfo(nskb)->gso_segs = 0;
++ skb_shinfo(nskb)->gso_type = 0;
++
++ tcph = tcp_hdr(nskb);
++
++ /* Swap source and dest */
++ tmp_addr = ip_hdr(nskb)->saddr;
++ ip_hdr(nskb)->saddr = ip_hdr(nskb)->daddr;
++ ip_hdr(nskb)->daddr = tmp_addr;
++ tmp_port = tcph->source;
++ tcph->source = tcph->dest;
++ tcph->dest = tmp_port;
++
++ /* Truncate to length (no data) */
++ tcph->doff = sizeof(struct tcphdr)/4;
++ skb_trim(nskb, ip_hdrlen(nskb) + sizeof(struct tcphdr));
++ ip_hdr(nskb)->tot_len = htons(nskb->len);
++
++ if(oth->syn && !oth->ack && !oth->rst && !oth->fin) {
++ /* DELUDE essential part */
++ tcph->ack_seq = htonl(ntohl(oth->seq) + oth->syn + oth->fin +
++ oldskb->len - ip_hdrlen(oldskb) -
++ (oth->doff << 2));
++ tcph->seq = htonl(secure_tcp_sequence_number(
++ ip_hdr(nskb)->saddr, ip_hdr(nskb)->daddr,
++ tcph->source, tcph->dest));
++ tcph->ack = 1;
++ } else {
++ if(!tcph->ack) {
++ needs_ack = 1;
++ tcph->ack_seq = htonl(ntohl(oth->seq) + oth->syn + oth->fin
++ + oldskb->len - ip_hdrlen(oldskb)
++ - (oth->doff<<2));
++ tcph->seq = 0;
++ } else {
++ needs_ack = 0;
++ tcph->seq = oth->ack_seq;
++ tcph->ack_seq = 0;
++ }
++
++ /* Reset flags */
++ ((u_int8_t *)tcph)[13] = 0;
++ tcph->rst = 1;
++ tcph->ack = needs_ack;
++ }
++
++
++ tcph->window = 0;
++ tcph->urg_ptr = 0;
++
++ /* Adjust TCP checksum */
++ tcph->check = 0;
++ tcph->check = tcp_v4_check(tcph, sizeof(struct tcphdr),
++ ip_hdr(nskb)->saddr,
++ ip_hdr(nskb)->daddr,
++ csum_partial((char *)tcph,
++ sizeof(struct tcphdr), 0));
++
++ /* Set DF, id = 0 */
++ ip_hdr(nskb)->frag_off = htons(IP_DF);
++ ip_hdr(nskb)->id = 0;
++
++ addr_type = RTN_UNSPEC;
++ if (hook != NF_IP_FORWARD
++#ifdef CONFIG_BRIDGE_NETFILTER
++ || (nskb->nf_bridge && nskb->nf_bridge->mask & BRNF_BRIDGED)
++#endif
++ )
++ addr_type = RTN_LOCAL;
++
++ if (ip_route_me_harder(&nskb, addr_type))
++ goto free_nskb;
++
++ nskb->ip_summed = CHECKSUM_NONE;
++
++ /* Adjust IP TTL */
++ ip_hdr(nskb)->ttl = dst_metric(nskb->dst, RTAX_HOPLIMIT);
++
++ /* Adjust IP checksum */
++ ip_hdr(nskb)->check = 0;
++ ip_hdr(nskb)->check = ip_fast_csum((unsigned char *)ip_hdr(nskb),
++ ip_hdr(nskb)->ihl);
++
++ /* "Never happens" */
++ if (nskb->len > dst_mtu(nskb->dst))
++ goto free_nskb;
++
++ nf_ct_attach(nskb, oldskb);
++
++ NF_HOOK(PF_INET, NF_IP_LOCAL_OUT, nskb, NULL, nskb->dst->dev,
++ dst_output);
++ return;
++
++ free_nskb:
++ kfree_skb(nskb);
++}
++
++static unsigned int xt_delude_target(struct sk_buff **pskb,
++ const struct net_device *in, const struct net_device *out,
++ unsigned int hooknum, const struct xt_target *target, const void *targinfo
++#ifdef HAVE_TARGUSERINFO
++ ,
++ void *userinfo
++#endif
++ )
++{
++ /* WARNING: This code causes reentry within iptables.
++ This means that the iptables jump stack is now crap. We
++ must return an absolute verdict. --RR */
++ send_reset(*pskb, hooknum);
++ return NF_DROP;
++}
++
++static int xt_delude_check(const char *tablename, const void *e_void,
++ const struct xt_target *target, void *targinfo,
++#ifdef HAVE_TARGINFOSIZE
++ unsigned int targinfosize,
++#endif
++ unsigned int hook_mask)
++{
++ if(hook_mask & ~((1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD))) {
++ printk(KERN_WARNING PFX "DELUDE may not be used in chains "
++ "other than INPUT and FORWARD\n");
++ return 0;
++ }
++ return 1;
++}
++
++static struct xt_target xt_delude_info = {
++ .name = "DELUDE",
++ .target = xt_delude_target,
++ .checkentry = xt_delude_check,
++ .table = "filter",
++ .hooks = (1 << NF_IP_LOCAL_IN) | (1 << NF_IP_FORWARD) |
++ (1 << NF_IP_LOCAL_OUT),
++ .proto = IPPROTO_TCP,
++ .family = AF_INET,
++ .me = THIS_MODULE,
++};
++
++static int __init xt_delude_init(void)
++{
++ return xt_register_target(&xt_delude_info);
++}
++
++static void __exit xt_delude_exit(void)
++{
++ xt_unregister_target(&xt_delude_info);
++}
++
++module_init(xt_delude_init);
++module_exit(xt_delude_exit);
++MODULE_AUTHOR("Jan Engelhardt <jengelh@gmx.de>");
++MODULE_DESCRIPTION("netfilter DELUDE target");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("ipt_DELUDE");
+Index: linux-2.6.23-rc6/net/netfilter/xt_portscan.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/netfilter/xt_portscan.c 2007-09-21 16:24:03.000000000 +0800
+@@ -0,0 +1,272 @@
++/*
++ portscan match for netfilter
++
++ Written by Jan Engelhardt, 2006 - 2007
++ This program is free software; you can redistribute it and/or modify
++ it under the terms of the GNU General Public License version 2 as
++ published by the Free Software Foundation.
++*/
++#include <linux/in.h>
++#include <linux/ip.h>
++#include <linux/module.h>
++#include <linux/moduleparam.h>
++#include <linux/skbuff.h>
++#include <linux/stat.h>
++#include <linux/tcp.h>
++#include <linux/types.h>
++#include <linux/version.h>
++#include <linux/netfilter/x_tables.h>
++#include <linux/netfilter/xt_tcpudp.h>
++#include <linux/netfilter/oot_conntrack.h>
++#include <linux/netfilter/xt_portscan.h>
++#include <linux/netfilter/oot_trans.h>
++#define PFX KBUILD_MODNAME ": "
++
++enum {
++ TCP_FLAGS_ALL3 = TCP_FLAG_FIN | TCP_FLAG_RST | TCP_FLAG_SYN,
++ TCP_FLAGS_ALL4 = TCP_FLAGS_ALL3 | TCP_FLAG_ACK,
++ TCP_FLAGS_ALL6 = TCP_FLAGS_ALL4 | TCP_FLAG_PSH | TCP_FLAG_URG,
++};
++
++/* Module parameters */
++static unsigned int
++ connmark_mask = ~0,
++ packet_mask = ~0,
++ mark_seen = 0x9,
++ mark_synrcv = 0x1,
++ mark_closed = 0x2,
++ mark_synscan = 0x3,
++ mark_estab1 = 0x4,
++ mark_estab2 = 0x5,
++ mark_cnscan = 0x6,
++ mark_grscan = 0x7,
++ mark_valid = 0x8;
++
++module_param(connmark_mask, uint, S_IRUGO | S_IWUSR);
++module_param(packet_mask, uint, S_IRUGO | S_IWUSR);
++module_param(mark_seen, uint, S_IRUGO | S_IWUSR);
++module_param(mark_synrcv, uint, S_IRUGO | S_IWUSR);
++module_param(mark_closed, uint, S_IRUGO | S_IWUSR);
++module_param(mark_synscan, uint, S_IRUGO | S_IWUSR);
++module_param(mark_estab1, uint, S_IRUGO | S_IWUSR);
++module_param(mark_estab2, uint, S_IRUGO | S_IWUSR);
++module_param(mark_cnscan, uint, S_IRUGO | S_IWUSR);
++module_param(mark_grscan, uint, S_IRUGO | S_IWUSR);
++module_param(mark_valid, uint, S_IRUGO | S_IWUSR);
++MODULE_PARM_DESC(connmark_mask, "only set specified bits in connection mark");
++MODULE_PARM_DESC(packet_mask, "only set specified bits in packet mark");
++MODULE_PARM_DESC(mark_seen, "nfmark value for packet-seen state");
++MODULE_PARM_DESC(mark_synrcv, "connmark value for SYN Received state");
++MODULE_PARM_DESC(mark_closed, "connmark value for closed state");
++MODULE_PARM_DESC(mark_synscan, "connmark value for SYN Scan state");
++MODULE_PARM_DESC(mark_estab1, "connmark value for Established-1 state");
++MODULE_PARM_DESC(mark_estab2, "connmark value for Established-2 state");
++MODULE_PARM_DESC(mark_cnscan, "connmark value for Connect Scan state");
++MODULE_PARM_DESC(mark_grscan, "connmark value for Grab Scan state");
++MODULE_PARM_DESC(mark_valid, "connmark value for Valid state");
++
++/* TCP flag functions */
++static inline int tflg_ack4(const struct tcphdr *th)
++{
++ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) == TCP_FLAG_ACK;
++}
++
++static inline int tflg_ack6(const struct tcphdr *th)
++{
++ return (tcp_flag_word(th) & TCP_FLAGS_ALL6) == TCP_FLAG_ACK;
++}
++
++static inline int tflg_fin(const struct tcphdr *th)
++{
++ return (tcp_flag_word(th) & TCP_FLAGS_ALL3) == TCP_FLAG_FIN;
++}
++
++static inline int tflg_rst(const struct tcphdr *th)
++{
++ return (tcp_flag_word(th) & TCP_FLAGS_ALL3) == TCP_FLAG_RST;
++}
++
++static inline int tflg_rstack(const struct tcphdr *th)
++{
++ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) ==
++ (TCP_FLAG_ACK | TCP_FLAG_RST);
++}
++
++static inline int tflg_syn(const struct tcphdr *th)
++{
++ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) == TCP_FLAG_SYN;
++}
++
++static inline int tflg_synack(const struct tcphdr *th)
++{
++ return (tcp_flag_word(th) & TCP_FLAGS_ALL4) ==
++ (TCP_FLAG_SYN | TCP_FLAG_ACK);
++}
++
++/* portscan functions */
++static inline int xt_portscan_stealth(const struct tcphdr *th)
++{
++ /*
++ * "Connection refused" replies to our own probes must not be matched.
++ */
++ if(tflg_rstack(th))
++ return 0;
++
++ if(tflg_rst(th) && printk_ratelimit()) {
++ printk(KERN_WARNING PFX "Warning: Pure RST received\n");
++ return 0;
++ }
++
++ /*
++ * -p tcp ! --syn -m conntrack --ctstate INVALID: Looking for non-start
++ * packets that are not associated with any connection -- this will
++ * match most scan types (NULL, XMAS, FIN) and ridiculous flag
++ * combinations (SYN-RST, SYN-FIN, SYN-FIN-RST, FIN-RST, etc.).
++ */
++ return !tflg_syn(th);
++}
++
++static inline int xt_portscan_full(int mark, enum ip_conntrack_info ctstate,
++ int loopback, const struct tcphdr *tcph, int payload_len)
++{
++ if(mark == mark_estab2) {
++ /*
++ * -m connmark --mark $ESTAB2
++ */
++ if(tflg_ack4(tcph) && payload_len == 0)
++ return mark; /* keep mark */
++ else if(tflg_rst(tcph) || tflg_fin(tcph))
++ return mark_grscan;
++ else
++ return mark_valid;
++ } else if(mark == mark_estab1) {
++ /*
++ * -m connmark --mark $ESTAB1
++ */
++ if(tflg_rst(tcph) || tflg_fin(tcph))
++ return mark_cnscan;
++ else if(!loopback && tflg_ack4(tcph) && payload_len == 0)
++ return mark_estab2;
++ else
++ return mark_valid;
++ } else if(mark == mark_synrcv) {
++ /*
++ * -m connmark --mark $SYN
++ */
++ if(loopback && tflg_synack(tcph))
++ return mark; /* keep mark */
++ else if(loopback && tflg_rstack(tcph))
++ return mark_closed;
++ else if(tflg_ack6(tcph))
++ return mark_estab1;
++ else
++ return mark_synscan;
++ } else if(ctstate == IP_CT_NEW && tflg_syn(tcph)) {
++ /*
++ * -p tcp --syn --ctstate NEW
++ */
++ return mark_synrcv;
++ }
++ return mark;
++}
++
++static int xt_portscan_match(const struct sk_buff *skb,
++ const struct net_device *in, const struct net_device *out,
++ const struct xt_match *match, const void *matchinfo, int offset,
++ unsigned int protoff, int *hotdrop)
++{
++ const struct xt_portscan_info *info = matchinfo;
++ enum ip_conntrack_info ctstate;
++ struct nf_conn *ctdata;
++ const struct tcphdr *tcph;
++ struct tcphdr tcph_buf;
++
++ tcph = skb_header_pointer(skb, protoff, sizeof(tcph_buf), &tcph_buf);
++ if(tcph == NULL)
++ return 0;
++
++ /* Check for invalid packets: -m conntrack --ctstate INVALID */
++ if((ctdata = nf_ct_get(skb, &ctstate)) == NULL) {
++ if(info->match_stealth)
++ return xt_portscan_stealth(tcph);
++ /*
++ * If @ctdata is NULL, we cannot match the other scan
++ * types, return.
++ */
++ return 0;
++ }
++
++ /*
++ * If -m portscan was previously applied to this packet, the rules we
++ * simulate must not be run through again. And for speedup, do not call
++ * it either when the connection is already VALID.
++ */
++ if((ctdata->mark & connmark_mask) == mark_valid ||
++ (skb->nfmark & packet_mask) != mark_seen)
++ {
++ unsigned int n;
++ n = xt_portscan_full(ctdata->mark & connmark_mask, ctstate,
++ in == &loopback_dev, tcph,
++ skb->len - protoff - 4 * tcph->doff);
++
++ ctdata->mark = (ctdata->mark & ~connmark_mask) | n;
++ ((struct sk_buff *)skb)->nfmark =
++ (skb->nfmark & ~packet_mask) | mark_seen;
++ }
++
++ return (info->match_syn && ctdata->mark == mark_synscan) ||
++ (info->match_cn && ctdata->mark == mark_cnscan) ||
++ (info->match_gr && ctdata->mark == mark_grscan);
++}
++
++static int xt_portscan_checkentry(const char *tablename, const void *entry,
++ const struct xt_match *match, void *matchinfo,
++#ifdef HAVE_MATCHINFOSIZE
++ unsigned int matchinfosize,
++#endif
++ unsigned int hook_mask)
++{
++ const struct xt_portscan_info *info = matchinfo;
++#ifdef HAVE_MATCHINFOSIZE
++ if(matchinfosize != XT_ALIGN(sizeof(struct xt_portscan_info))) {
++ printk(KERN_WARNING PFX "matchinfosize %u != %Zu\n",
++ matchinfosize,
++ XT_ALIGN(sizeof(struct xt_portscan_info)));
++ return 0;
++ }
++#endif
++ if((info->match_stealth & ~1) || (info->match_syn & ~1) ||
++ (info->match_cn & ~1) || (info->match_gr & ~1)) {
++ printk(KERN_WARNING PFX "Invalid flags\n");
++ return 0;
++ }
++ return 1;
++}
++
++static struct xt_match xt_portscan = {
++ .name = "portscan",
++ .match = xt_portscan_match,
++ .checkentry = xt_portscan_checkentry,
++ .matchsize = sizeof(struct xt_portscan_info),
++ .proto = IPPROTO_TCP,
++ .family = AF_INET,
++ .me = THIS_MODULE,
++};
++
++static int __init xt_portscan_init(void)
++{
++ return xt_register_match(&xt_portscan);
++}
++
++static void __exit xt_portscan_exit(void)
++{
++ xt_unregister_match(&xt_portscan);
++ return;
++}
++
++module_init(xt_portscan_init);
++module_exit(xt_portscan_exit);
++MODULE_AUTHOR("Jan Engelhardt <jengelh@gmx.de>");
++MODULE_DESCRIPTION("netfilter portscan match module");
++MODULE_LICENSE("GPL");
++MODULE_ALIAS("ipt_portscan");
+Index: linux-2.6.23-rc6/drivers/char/random.c
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/char/random.c 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/drivers/char/random.c 2007-09-21 16:24:03.000000000 +0800
+@@ -1562,6 +1562,8 @@
+ return seq;
+ }
+
++EXPORT_SYMBOL(secure_tcp_sequence_number);
++
+ /* Generate secure starting point for ephemeral IPV4 transport port search */
+ u32 secure_ipv4_port_ephemeral(__be32 saddr, __be32 daddr, __be16 dport)
+ {
--- /dev/null
+Index: linux-2.6.23-rc6/net/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/netfilter/Kconfig 2007-09-21 16:24:03.000000000 +0800
++++ linux-2.6.23-rc6/net/netfilter/Kconfig 2007-09-21 16:24:04.000000000 +0800
+@@ -143,7 +143,7 @@
+
+ config NF_CONNTRACK_H323
+ tristate "H.323 protocol support (EXPERIMENTAL)"
+- depends on EXPERIMENTAL && NF_CONNTRACK && (IPV6 || IPV6=n)
++ depends on EXPERIMENTAL && NF_CONNTRACK
+ help
+ H.323 is a VoIP signalling protocol from ITU-T. As one of the most
+ important VoIP protocols, it is widely used by voice hardware and
+@@ -403,7 +403,7 @@
+
+ config NETFILTER_XT_TARGET_TCPMSS
+ tristate '"TCPMSS" target support'
+- depends on NETFILTER_XTABLES && (IPV6 || IPV6=n)
++ depends on NETFILTER_XTABLES
+ ---help---
+ This option adds a `TCPMSS' target, which allows you to alter the
+ MSS value of TCP SYN packets, to control the maximum size for that
--- /dev/null
+Index: linux-2.6.23-rc9/include/linux/netfilter/nf_conntrack_rtsp.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc9/include/linux/netfilter/nf_conntrack_rtsp.h 2007-10-03 23:41:29.000000000 +0800
+@@ -0,0 +1,63 @@
++/*
++ * RTSP extension for IP connection tracking.
++ * (C) 2003 by Tom Marshall <tmarshall at real.com>
++ * based on ip_conntrack_irc.h
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++#ifndef _IP_CONNTRACK_RTSP_H
++#define _IP_CONNTRACK_RTSP_H
++
++//#define IP_NF_RTSP_DEBUG 1
++#define IP_NF_RTSP_VERSION "0.6.21"
++
++#ifdef __KERNEL__
++/* port block types */
++typedef enum {
++ pb_single, /* client_port=x */
++ pb_range, /* client_port=x-y */
++ pb_discon /* client_port=x/y (rtspbis) */
++} portblock_t;
++
++/* We record seq number and length of rtsp headers here, all in host order. */
++
++/*
++ * This structure is per expected connection. It is a member of struct
++ * ip_conntrack_expect. The TCP SEQ for the conntrack expect is stored
++ * there and we are expected to only store the length of the data which
++ * needs replaced. If a packet contains multiple RTSP messages, we create
++ * one expected connection per message.
++ *
++ * We use these variables to mark the entire header block. This may seem
++ * like overkill, but the nature of RTSP requires it. A header may appear
++ * multiple times in a message. We must treat two Transport headers the
++ * same as one Transport header with two entries.
++ */
++struct ip_ct_rtsp_expect
++{
++ u_int32_t len; /* length of header block */
++ portblock_t pbtype; /* Type of port block that was requested */
++ u_int16_t loport; /* Port that was requested, low or first */
++ u_int16_t hiport; /* Port that was requested, high or second */
++#if 0
++ uint method; /* RTSP method */
++ uint cseq; /* CSeq from request */
++#endif
++};
++
++extern unsigned int (*nf_nat_rtsp_hook)(struct sk_buff **pskb,
++ enum ip_conntrack_info ctinfo,
++ unsigned int matchoff, unsigned int matchlen,
++ struct ip_ct_rtsp_expect *prtspexp,
++ struct nf_conntrack_expect *exp);
++
++extern void (*nf_nat_rtsp_hook_expectfn)(struct nf_conn *ct, struct nf_conntrack_expect *exp);
++
++#define RTSP_PORT 554
++
++#endif /* __KERNEL__ */
++
++#endif /* _IP_CONNTRACK_RTSP_H */
+Index: linux-2.6.23-rc9/include/linux/netfilter_helpers.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc9/include/linux/netfilter_helpers.h 2007-10-03 23:41:29.000000000 +0800
+@@ -0,0 +1,133 @@
++/*
++ * Helpers for netfiler modules. This file provides implementations for basic
++ * functions such as strncasecmp(), etc.
++ *
++ * gcc will warn for defined but unused functions, so we only include the
++ * functions requested. The following macros are used:
++ * NF_NEED_STRNCASECMP nf_strncasecmp()
++ * NF_NEED_STRTOU16 nf_strtou16()
++ * NF_NEED_STRTOU32 nf_strtou32()
++ */
++#ifndef _NETFILTER_HELPERS_H
++#define _NETFILTER_HELPERS_H
++
++/* Only include these functions for kernel code. */
++#ifdef __KERNEL__
++
++#include <linux/ctype.h>
++#define iseol(c) ( (c) == '\r' || (c) == '\n' )
++
++/*
++ * The standard strncasecmp()
++ */
++#ifdef NF_NEED_STRNCASECMP
++static int
++nf_strncasecmp(const char* s1, const char* s2, u_int32_t len)
++{
++ if (s1 == NULL || s2 == NULL)
++ {
++ if (s1 == NULL && s2 == NULL)
++ {
++ return 0;
++ }
++ return (s1 == NULL) ? -1 : 1;
++ }
++ while (len > 0 && tolower(*s1) == tolower(*s2))
++ {
++ len--;
++ s1++;
++ s2++;
++ }
++ return ( (len == 0) ? 0 : (tolower(*s1) - tolower(*s2)) );
++}
++#endif /* NF_NEED_STRNCASECMP */
++
++/*
++ * Parse a string containing a 16-bit unsigned integer.
++ * Returns the number of chars used, or zero if no number is found.
++ */
++#ifdef NF_NEED_STRTOU16
++static int
++nf_strtou16(const char* pbuf, u_int16_t* pval)
++{
++ int n = 0;
++
++ *pval = 0;
++ while (isdigit(pbuf[n]))
++ {
++ *pval = (*pval * 10) + (pbuf[n] - '0');
++ n++;
++ }
++
++ return n;
++}
++#endif /* NF_NEED_STRTOU16 */
++
++/*
++ * Parse a string containing a 32-bit unsigned integer.
++ * Returns the number of chars used, or zero if no number is found.
++ */
++#ifdef NF_NEED_STRTOU32
++static int
++nf_strtou32(const char* pbuf, u_int32_t* pval)
++{
++ int n = 0;
++
++ *pval = 0;
++ while (pbuf[n] >= '0' && pbuf[n] <= '9')
++ {
++ *pval = (*pval * 10) + (pbuf[n] - '0');
++ n++;
++ }
++
++ return n;
++}
++#endif /* NF_NEED_STRTOU32 */
++
++/*
++ * Given a buffer and length, advance to the next line and mark the current
++ * line.
++ */
++#ifdef NF_NEED_NEXTLINE
++static int
++nf_nextline(char* p, uint len, uint* poff, uint* plineoff, uint* plinelen)
++{
++ uint off = *poff;
++ uint physlen = 0;
++
++ if (off >= len)
++ {
++ return 0;
++ }
++
++ while (p[off] != '\n')
++ {
++ if (len-off <= 1)
++ {
++ return 0;
++ }
++
++ physlen++;
++ off++;
++ }
++
++ /* if we saw a crlf, physlen needs adjusted */
++ if (physlen > 0 && p[off] == '\n' && p[off-1] == '\r')
++ {
++ physlen--;
++ }
++
++ /* advance past the newline */
++ off++;
++
++ *plineoff = *poff;
++ *plinelen = physlen;
++ *poff = off;
++
++ return 1;
++}
++#endif /* NF_NEED_NEXTLINE */
++
++#endif /* __KERNEL__ */
++
++#endif /* _NETFILTER_HELPERS_H */
+Index: linux-2.6.23-rc9/include/linux/netfilter_mime.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc9/include/linux/netfilter_mime.h 2007-10-03 23:41:29.000000000 +0800
+@@ -0,0 +1,89 @@
++/*
++ * MIME functions for netfilter modules. This file provides implementations
++ * for basic MIME parsing. MIME headers are used in many protocols, such as
++ * HTTP, RTSP, SIP, etc.
++ *
++ * gcc will warn for defined but unused functions, so we only include the
++ * functions requested. The following macros are used:
++ * NF_NEED_MIME_NEXTLINE nf_mime_nextline()
++ */
++#ifndef _NETFILTER_MIME_H
++#define _NETFILTER_MIME_H
++
++/* Only include these functions for kernel code. */
++#ifdef __KERNEL__
++
++#include <linux/ctype.h>
++
++/*
++ * Given a buffer and length, advance to the next line and mark the current
++ * line. If the current line is empty, *plinelen will be set to zero. If
++ * not, it will be set to the actual line length (including CRLF).
++ *
++ * 'line' in this context means logical line (includes LWS continuations).
++ * Returns 1 on success, 0 on failure.
++ */
++#ifdef NF_NEED_MIME_NEXTLINE
++static int
++nf_mime_nextline(char* p, uint len, uint* poff, uint* plineoff, uint* plinelen)
++{
++ uint off = *poff;
++ uint physlen = 0;
++ int is_first_line = 1;
++
++ if (off >= len)
++ {
++ return 0;
++ }
++
++ do
++ {
++ while (p[off] != '\n')
++ {
++ if (len-off <= 1)
++ {
++ return 0;
++ }
++
++ physlen++;
++ off++;
++ }
++
++ /* if we saw a crlf, physlen needs adjusted */
++ if (physlen > 0 && p[off] == '\n' && p[off-1] == '\r')
++ {
++ physlen--;
++ }
++
++ /* advance past the newline */
++ off++;
++
++ /* check for an empty line */
++ if (physlen == 0)
++ {
++ break;
++ }
++
++ /* check for colon on the first physical line */
++ if (is_first_line)
++ {
++ is_first_line = 0;
++ if (memchr(p+(*poff), ':', physlen) == NULL)
++ {
++ return 0;
++ }
++ }
++ }
++ while (p[off] == ' ' || p[off] == '\t');
++
++ *plineoff = *poff;
++ *plinelen = (physlen == 0) ? 0 : (off - *poff);
++ *poff = off;
++
++ return 1;
++}
++#endif /* NF_NEED_MIME_NEXTLINE */
++
++#endif /* __KERNEL__ */
++
++#endif /* _NETFILTER_MIME_H */
+Index: linux-2.6.23-rc9/net/ipv4/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc9.orig/net/ipv4/netfilter/Makefile 2007-10-02 15:04:56.000000000 +0800
++++ linux-2.6.23-rc9/net/ipv4/netfilter/Makefile 2007-10-03 23:41:29.000000000 +0800
+@@ -23,6 +23,7 @@
+ obj-$(CONFIG_NF_NAT_FTP) += nf_nat_ftp.o
+ obj-$(CONFIG_NF_NAT_H323) += nf_nat_h323.o
+ obj-$(CONFIG_NF_NAT_IRC) += nf_nat_irc.o
++obj-$(CONFIG_NF_NAT_RTSP) += nf_nat_rtsp.o
+ obj-$(CONFIG_NF_NAT_PPTP) += nf_nat_pptp.o
+ obj-$(CONFIG_NF_NAT_SIP) += nf_nat_sip.o
+ obj-$(CONFIG_NF_NAT_SNMP_BASIC) += nf_nat_snmp_basic.o
+Index: linux-2.6.23-rc9/net/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc9.orig/net/netfilter/Kconfig 2007-10-02 15:04:56.000000000 +0800
++++ linux-2.6.23-rc9/net/netfilter/Kconfig 2007-10-03 23:41:29.000000000 +0800
+@@ -249,6 +249,16 @@
+
+ To compile it as a module, choose M here. If unsure, say N.
+
++config NF_CONNTRACK_RTSP
++ tristate "RTSP protocol support"
++ depends on NF_CONNTRACK
++ help
++ Support the RTSP protocol. This allows UDP transports to be setup
++ properly, including RTP and RDT.
++
++ If you want to compile it as a module, say 'M' here and read
++ Documentation/modules.txt. If unsure, say 'Y'.
++
+ config NF_CT_NETLINK
+ tristate 'Connection tracking netlink interface (EXPERIMENTAL)'
+ depends on EXPERIMENTAL && NF_CONNTRACK && NETFILTER_NETLINK
+Index: linux-2.6.23-rc9/net/netfilter/Makefile
+===================================================================
+--- linux-2.6.23-rc9.orig/net/netfilter/Makefile 2007-10-02 15:04:56.000000000 +0800
++++ linux-2.6.23-rc9/net/netfilter/Makefile 2007-10-03 23:41:29.000000000 +0800
+@@ -33,6 +33,7 @@
+ obj-$(CONFIG_NF_CONNTRACK_SANE) += nf_conntrack_sane.o
+ obj-$(CONFIG_NF_CONNTRACK_SIP) += nf_conntrack_sip.o
+ obj-$(CONFIG_NF_CONNTRACK_TFTP) += nf_conntrack_tftp.o
++obj-$(CONFIG_NF_CONNTRACK_RTSP) += nf_conntrack_rtsp.o
+
+ # generic X tables
+ obj-$(CONFIG_NETFILTER_XTABLES) += x_tables.o xt_tcpudp.o
+Index: linux-2.6.23-rc9/net/ipv4/netfilter/Kconfig
+===================================================================
+--- linux-2.6.23-rc9.orig/net/ipv4/netfilter/Kconfig 2007-10-02 15:04:56.000000000 +0800
++++ linux-2.6.23-rc9/net/ipv4/netfilter/Kconfig 2007-10-03 23:41:29.000000000 +0800
+@@ -314,6 +314,11 @@
+ depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT
+ default NF_NAT && NF_CONNTRACK_IRC
+
++config NF_NAT_RTSP
++ tristate
++ depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT
++ default NF_NAT && NF_CONNTRACK_RTSP
++
+ config NF_NAT_TFTP
+ tristate
+ depends on IP_NF_IPTABLES && NF_CONNTRACK && NF_NAT
+Index: linux-2.6.23-rc9/net/netfilter/nf_conntrack_rtsp.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc9/net/netfilter/nf_conntrack_rtsp.c 2007-10-03 23:41:29.000000000 +0800
+@@ -0,0 +1,515 @@
++/*
++ * RTSP extension for IP connection tracking
++ * (C) 2003 by Tom Marshall <tmarshall at real.com>
++ * based on ip_conntrack_irc.c
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ *
++ * Module load syntax:
++ * insmod nf_conntrack_rtsp.o ports=port1,port2,...port<MAX_PORTS>
++ * max_outstanding=n setup_timeout=secs
++ *
++ * If no ports are specified, the default will be port 554.
++ *
++ * With max_outstanding you can define the maximum number of not yet
++ * answered SETUP requests per RTSP session (default 8).
++ * With setup_timeout you can specify how long the system waits for
++ * an expected data channel (default 300 seconds).
++ *
++ * 2005-02-13: Harald Welte <laforge at netfilter.org>
++ * - port to 2.6
++ * - update to recent post-2.6.11 api changes
++ * 2006-09-14: Steven Van Acker <deepstar at singularity.be>
++ * - removed calls to NAT code from conntrack helper: NAT no longer needed to use rtsp-conntrack
++ * 2007-04-18: Michael Guntsche <mike at it-loops.com>
++ * - Port to new NF API
++ */
++
++#include <linux/module.h>
++#include <linux/netfilter.h>
++#include <linux/ip.h>
++#include <linux/inet.h>
++#include <net/tcp.h>
++
++#include <net/netfilter/nf_conntrack.h>
++#include <net/netfilter/nf_conntrack_expect.h>
++#include <net/netfilter/nf_conntrack_helper.h>
++#include <linux/netfilter/nf_conntrack_rtsp.h>
++
++#define NF_NEED_STRNCASECMP
++#define NF_NEED_STRTOU16
++#define NF_NEED_STRTOU32
++#define NF_NEED_NEXTLINE
++#include <linux/netfilter_helpers.h>
++#define NF_NEED_MIME_NEXTLINE
++#include <linux/netfilter_mime.h>
++
++#include <linux/ctype.h>
++#define MAX_SIMUL_SETUP 8 /* XXX: use max_outstanding */
++#define INFOP(fmt, args...) printk(KERN_INFO "%s: %s: " fmt, __FILE__, __FUNCTION__ , ## args)
++#if 0
++#define DEBUGP(fmt, args...) printk(KERN_DEBUG "%s: %s: " fmt, __FILE__, __FUNCTION__ , ## args)
++#else
++#define DEBUGP(fmt, args...)
++#endif
++
++#define MAX_PORTS 8
++static int ports[MAX_PORTS];
++static int num_ports = 0;
++static int max_outstanding = 8;
++static unsigned int setup_timeout = 300;
++
++MODULE_AUTHOR("Tom Marshall <tmarshall at real.com>");
++MODULE_DESCRIPTION("RTSP connection tracking module");
++MODULE_LICENSE("GPL");
++module_param_array(ports, int, &num_ports, 0400);
++MODULE_PARM_DESC(ports, "port numbers of RTSP servers");
++module_param(max_outstanding, int, 0400);
++MODULE_PARM_DESC(max_outstanding, "max number of outstanding SETUP requests per RTSP session");
++module_param(setup_timeout, int, 0400);
++MODULE_PARM_DESC(setup_timeout, "timeout on for unestablished data channels");
++
++static char *rtsp_buffer;
++static DEFINE_SPINLOCK(rtsp_buffer_lock);
++
++unsigned int (*nf_nat_rtsp_hook)(struct sk_buff **pskb,
++ enum ip_conntrack_info ctinfo,
++ unsigned int matchoff, unsigned int matchlen,struct ip_ct_rtsp_expect* prtspexp,
++ struct nf_conntrack_expect *exp);
++void (*nf_nat_rtsp_hook_expectfn)(struct nf_conn *ct, struct nf_conntrack_expect *exp);
++
++EXPORT_SYMBOL_GPL(nf_nat_rtsp_hook);
++
++/*
++ * Max mappings we will allow for one RTSP connection (for RTP, the number
++ * of allocated ports is twice this value). Note that SMIL burns a lot of
++ * ports so keep this reasonably high. If this is too low, you will see a
++ * lot of "no free client map entries" messages.
++ */
++#define MAX_PORT_MAPS 16
++
++/*** default port list was here in the masq code: 554, 3030, 4040 ***/
++
++#define SKIP_WSPACE(ptr,len,off) while(off < len && isspace(*(ptr+off))) { off++; }
++
++/*
++ * Parse an RTSP packet.
++ *
++ * Returns zero if parsing failed.
++ *
++ * Parameters:
++ * IN ptcp tcp data pointer
++ * IN tcplen tcp data len
++ * IN/OUT ptcpoff points to current tcp offset
++ * OUT phdrsoff set to offset of rtsp headers
++ * OUT phdrslen set to length of rtsp headers
++ * OUT pcseqoff set to offset of CSeq header
++ * OUT pcseqlen set to length of CSeq header
++ */
++static int
++rtsp_parse_message(char* ptcp, uint tcplen, uint* ptcpoff,
++ uint* phdrsoff, uint* phdrslen,
++ uint* pcseqoff, uint* pcseqlen,
++ uint* transoff, uint* translen)
++{
++ uint entitylen = 0;
++ uint lineoff;
++ uint linelen;
++
++ if (!nf_nextline(ptcp, tcplen, ptcpoff, &lineoff, &linelen))
++ return 0;
++
++ *phdrsoff = *ptcpoff;
++ while (nf_mime_nextline(ptcp, tcplen, ptcpoff, &lineoff, &linelen)) {
++ if (linelen == 0) {
++ if (entitylen > 0)
++ *ptcpoff += min(entitylen, tcplen - *ptcpoff);
++ break;
++ }
++ if (lineoff+linelen > tcplen) {
++ INFOP("!! overrun !!\n");
++ break;
++ }
++
++ if (nf_strncasecmp(ptcp+lineoff, "CSeq:", 5) == 0) {
++ *pcseqoff = lineoff;
++ *pcseqlen = linelen;
++ }
++
++ if (nf_strncasecmp(ptcp+lineoff, "Transport:", 10) == 0) {
++ *transoff = lineoff;
++ *translen = linelen;
++ }
++
++ if (nf_strncasecmp(ptcp+lineoff, "Content-Length:", 15) == 0) {
++ uint off = lineoff+15;
++ SKIP_WSPACE(ptcp+lineoff, linelen, off);
++ nf_strtou32(ptcp+off, &entitylen);
++ }
++ }
++ *phdrslen = (*ptcpoff) - (*phdrsoff);
++
++ return 1;
++}
++
++/*
++ * Find lo/hi client ports (if any) in transport header
++ * In:
++ * ptcp, tcplen = packet
++ * tranoff, tranlen = buffer to search
++ *
++ * Out:
++ * pport_lo, pport_hi = lo/hi ports (host endian)
++ *
++ * Returns nonzero if any client ports found
++ *
++ * Note: it is valid (and expected) for the client to request multiple
++ * transports, so we need to parse the entire line.
++ */
++static int
++rtsp_parse_transport(char* ptran, uint tranlen,
++ struct ip_ct_rtsp_expect* prtspexp)
++{
++ int rc = 0;
++ uint off = 0;
++
++ if (tranlen < 10 || !iseol(ptran[tranlen-1]) ||
++ nf_strncasecmp(ptran, "Transport:", 10) != 0) {
++ INFOP("sanity check failed\n");
++ return 0;
++ }
++
++ DEBUGP("tran='%.*s'\n", (int)tranlen, ptran);
++ off += 10;
++ SKIP_WSPACE(ptran, tranlen, off);
++
++ /* Transport: tran;field;field=val,tran;field;field=val,... */
++ while (off < tranlen) {
++ const char* pparamend;
++ uint nextparamoff;
++
++ pparamend = memchr(ptran+off, ',', tranlen-off);
++ pparamend = (pparamend == NULL) ? ptran+tranlen : pparamend+1;
++ nextparamoff = pparamend-ptran;
++
++ while (off < nextparamoff) {
++ const char* pfieldend;
++ uint nextfieldoff;
++
++ pfieldend = memchr(ptran+off, ';', nextparamoff-off);
++ nextfieldoff = (pfieldend == NULL) ? nextparamoff : pfieldend-ptran+1;
++
++ if (strncmp(ptran+off, "client_port=", 12) == 0) {
++ u_int16_t port;
++ uint numlen;
++
++ off += 12;
++ numlen = nf_strtou16(ptran+off, &port);
++ off += numlen;
++ if (prtspexp->loport != 0 && prtspexp->loport != port)
++ DEBUGP("multiple ports found, port %hu ignored\n", port);
++ else {
++ DEBUGP("lo port found : %hu\n", port);
++ prtspexp->loport = prtspexp->hiport = port;
++ if (ptran[off] == '-') {
++ off++;
++ numlen = nf_strtou16(ptran+off, &port);
++ off += numlen;
++ prtspexp->pbtype = pb_range;
++ prtspexp->hiport = port;
++
++ // If we have a range, assume rtp:
++ // loport must be even, hiport must be loport+1
++ if ((prtspexp->loport & 0x0001) != 0 ||
++ prtspexp->hiport != prtspexp->loport+1) {
++ DEBUGP("incorrect range: %hu-%hu, correcting\n",
++ prtspexp->loport, prtspexp->hiport);
++ prtspexp->loport &= 0xfffe;
++ prtspexp->hiport = prtspexp->loport+1;
++ }
++ } else if (ptran[off] == '/') {
++ off++;
++ numlen = nf_strtou16(ptran+off, &port);
++ off += numlen;
++ prtspexp->pbtype = pb_discon;
++ prtspexp->hiport = port;
++ }
++ rc = 1;
++ }
++ }
++
++ /*
++ * Note we don't look for the destination parameter here.
++ * If we are using NAT, the NAT module will handle it. If not,
++ * and the client is sending packets elsewhere, the expectation
++ * will quietly time out.
++ */
++
++ off = nextfieldoff;
++ }
++
++ off = nextparamoff;
++ }
++
++ return rc;
++}
++
++void expected(struct nf_conn *ct, struct nf_conntrack_expect *exp)
++{
++ if(nf_nat_rtsp_hook_expectfn) {
++ nf_nat_rtsp_hook_expectfn(ct,exp);
++ }
++}
++
++/*** conntrack functions ***/
++
++/* outbound packet: client->server */
++
++static inline int
++help_out(struct sk_buff **pskb, unsigned char *rb_ptr, unsigned int datalen,
++ struct nf_conn *ct, enum ip_conntrack_info ctinfo)
++{
++ struct ip_ct_rtsp_expect expinfo;
++
++ int dir = CTINFO2DIR(ctinfo); /* = IP_CT_DIR_ORIGINAL */
++ //struct tcphdr* tcph = (void*)iph + iph->ihl * 4;
++ //uint tcplen = pktlen - iph->ihl * 4;
++ char* pdata = rb_ptr;
++ //uint datalen = tcplen - tcph->doff * 4;
++ uint dataoff = 0;
++ int ret = NF_ACCEPT;
++
++ struct nf_conntrack_expect *exp;
++
++ __be16 be_loport;
++
++ memset(&expinfo, 0, sizeof(expinfo));
++
++ while (dataoff < datalen) {
++ uint cmdoff = dataoff;
++ uint hdrsoff = 0;
++ uint hdrslen = 0;
++ uint cseqoff = 0;
++ uint cseqlen = 0;
++ uint transoff = 0;
++ uint translen = 0;
++ uint off;
++
++ if (!rtsp_parse_message(pdata, datalen, &dataoff,
++ &hdrsoff, &hdrslen,
++ &cseqoff, &cseqlen,
++ &transoff, &translen))
++ break; /* not a valid message */
++
++ if (strncmp(pdata+cmdoff, "SETUP ", 6) != 0)
++ continue; /* not a SETUP message */
++ DEBUGP("found a setup message\n");
++
++ off = 0;
++ if(translen) {
++ rtsp_parse_transport(pdata+transoff, translen, &expinfo);
++ }
++
++ if (expinfo.loport == 0) {
++ DEBUGP("no udp transports found\n");
++ continue; /* no udp transports found */
++ }
++
++ DEBUGP("udp transport found, ports=(%d,%hu,%hu)\n",
++ (int)expinfo.pbtype, expinfo.loport, expinfo.hiport);
++
++ exp = nf_conntrack_expect_alloc(ct);
++ if (!exp) {
++ ret = NF_DROP;
++ goto out;
++ }
++
++ be_loport = htons(expinfo.loport);
++
++ nf_conntrack_expect_init(exp, ct->tuplehash[!dir].tuple.src.l3num,
++ &ct->tuplehash[!dir].tuple.src.u3, &ct->tuplehash[!dir].tuple.dst.u3,
++ IPPROTO_UDP, NULL, &be_loport);
++
++ exp->master = ct;
++
++ exp->expectfn = expected;
++ exp->flags = 0;
++
++ if (expinfo.pbtype == pb_range) {
++ DEBUGP("Changing expectation mask to handle multiple ports\n");
++ exp->mask.dst.u.udp.port = 0xfffe;
++ }
++
++ DEBUGP("expect_related %u.%u.%u.%u:%u-%u.%u.%u.%u:%u\n",
++ NIPQUAD(exp->tuple.src.u3.ip),
++ ntohs(exp->tuple.src.u.udp.port),
++ NIPQUAD(exp->tuple.dst.u3.ip),
++ ntohs(exp->tuple.dst.u.udp.port));
++
++ if (nf_nat_rtsp_hook)
++ /* pass the request off to the nat helper */
++ ret = nf_nat_rtsp_hook(pskb, ctinfo, hdrsoff, hdrslen, &expinfo, exp);
++ else if (nf_conntrack_expect_related(exp) != 0) {
++ INFOP("nf_conntrack_expect_related failed\n");
++ ret = NF_DROP;
++ }
++ nf_conntrack_expect_put(exp);
++ goto out;
++ }
++out:
++
++ return ret;
++}
++
++
++static inline int
++help_in(struct sk_buff **pskb, size_t pktlen,
++ struct nf_conn* ct, enum ip_conntrack_info ctinfo)
++{
++ return NF_ACCEPT;
++}
++
++static int help(struct sk_buff **pskb, unsigned int protoff,
++ struct nf_conn *ct, enum ip_conntrack_info ctinfo)
++{
++ struct tcphdr _tcph, *th;
++ unsigned int dataoff, datalen;
++ char *rb_ptr;
++ int ret = NF_DROP;
++
++ /* Until there's been traffic both ways, don't look in packets. */
++ if (ctinfo != IP_CT_ESTABLISHED &&
++ ctinfo != IP_CT_ESTABLISHED + IP_CT_IS_REPLY) {
++ DEBUGP("conntrackinfo = %u\n", ctinfo);
++ return NF_ACCEPT;
++ }
++
++ /* Not whole TCP header? */
++ th = skb_header_pointer(*pskb,protoff, sizeof(_tcph), &_tcph);
++
++ if (!th)
++ return NF_ACCEPT;
++
++ /* No data ? */
++ dataoff = protoff + th->doff*4;
++ datalen = (*pskb)->len - dataoff;
++ if (dataoff >= (*pskb)->len)
++ return NF_ACCEPT;
++
++ spin_lock_bh(&rtsp_buffer_lock);
++ rb_ptr = skb_header_pointer(*pskb, dataoff,
++ (*pskb)->len - dataoff, rtsp_buffer);
++ BUG_ON(rb_ptr == NULL);
++
++#if 0
++ /* Checksum invalid? Ignore. */
++ /* FIXME: Source route IP option packets --RR */
++ if (tcp_v4_check(tcph, tcplen, iph->saddr, iph->daddr,
++ csum_partial((char*)tcph, tcplen, 0)))
++ {
++ DEBUGP("bad csum: %p %u %u.%u.%u.%u %u.%u.%u.%u\n",
++ tcph, tcplen, NIPQUAD(iph->saddr), NIPQUAD(iph->daddr));
++ return NF_ACCEPT;
++ }
++#endif
++
++ switch (CTINFO2DIR(ctinfo)) {
++ case IP_CT_DIR_ORIGINAL:
++ ret = help_out(pskb, rb_ptr, datalen, ct, ctinfo);
++ break;
++ case IP_CT_DIR_REPLY:
++ DEBUGP("IP_CT_DIR_REPLY\n");
++ /* inbound packet: server->client */
++ ret = NF_ACCEPT;
++ break;
++ }
++
++ spin_unlock_bh(&rtsp_buffer_lock);
++
++ return ret;
++}
++
++static struct nf_conntrack_helper rtsp_helpers[MAX_PORTS];
++static char rtsp_names[MAX_PORTS][10];
++
++/* This function is intentionally _NOT_ defined as __exit */
++static void
++fini(void)
++{
++ int i;
++ for (i = 0; i < num_ports; i++) {
++ DEBUGP("unregistering port %d\n", ports[i]);
++ nf_conntrack_helper_unregister(&rtsp_helpers[i]);
++ }
++ kfree(rtsp_buffer);
++}
++
++static int __init
++init(void)
++{
++ int i, ret;
++ struct nf_conntrack_helper *hlpr;
++ char *tmpname;
++
++ printk("nf_conntrack_rtsp v" IP_NF_RTSP_VERSION " loading\n");
++
++ if (max_outstanding < 1) {
++ printk("nf_conntrack_rtsp: max_outstanding must be a positive integer\n");
++ return -EBUSY;
++ }
++ if (setup_timeout < 0) {
++ printk("nf_conntrack_rtsp: setup_timeout must be a positive integer\n");
++ return -EBUSY;
++ }
++
++ rtsp_buffer = kmalloc(65536, GFP_KERNEL);
++ if (!rtsp_buffer)
++ return -ENOMEM;
++
++ /* If no port given, default to standard rtsp port */
++ if (ports[0] == 0) {
++ ports[0] = RTSP_PORT;
++ }
++
++ for (i = 0; (i < MAX_PORTS) && ports[i]; i++) {
++ hlpr = &rtsp_helpers[i];
++ memset(hlpr, 0, sizeof(struct nf_conntrack_helper));
++ hlpr->tuple.src.u.tcp.port = htons(ports[i]);
++ hlpr->tuple.dst.protonum = IPPROTO_TCP;
++ hlpr->mask.src.u.tcp.port = 0xFFFF;
++ hlpr->mask.dst.protonum = 0xFF;
++ hlpr->max_expected = max_outstanding;
++ hlpr->timeout = setup_timeout;
++ hlpr->me = THIS_MODULE;
++ hlpr->help = help;
++
++ tmpname = &rtsp_names[i][0];
++ if (ports[i] == RTSP_PORT) {
++ sprintf(tmpname, "rtsp");
++ } else {
++ sprintf(tmpname, "rtsp-%d", i);
++ }
++ hlpr->name = tmpname;
++
++ DEBUGP("port #%d: %d\n", i, ports[i]);
++
++ ret = nf_conntrack_helper_register(hlpr);
++
++ if (ret) {
++ printk("nf_conntrack_rtsp: ERROR registering port %d\n", ports[i]);
++ fini();
++ return -EBUSY;
++ }
++ num_ports++;
++ }
++ return 0;
++}
++
++module_init(init);
++module_exit(fini);
++
++EXPORT_SYMBOL(nf_nat_rtsp_hook_expectfn);
++
+Index: linux-2.6.23-rc9/net/ipv4/netfilter/nf_nat_rtsp.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc9/net/ipv4/netfilter/nf_nat_rtsp.c 2007-10-03 23:41:29.000000000 +0800
+@@ -0,0 +1,496 @@
++/*
++ * RTSP extension for TCP NAT alteration
++ * (C) 2003 by Tom Marshall <tmarshall at real.com>
++ * based on ip_nat_irc.c
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ *
++ * Module load syntax:
++ * insmod nf_nat_rtsp.o ports=port1,port2,...port<MAX_PORTS>
++ * stunaddr=<address>
++ * destaction=[auto|strip|none]
++ *
++ * If no ports are specified, the default will be port 554 only.
++ *
++ * stunaddr specifies the address used to detect that a client is using STUN.
++ * If this address is seen in the destination parameter, it is assumed that
++ * the client has already punched a UDP hole in the firewall, so we don't
++ * mangle the client_port. If none is specified, it is autodetected. It
++ * only needs to be set if you have multiple levels of NAT. It should be
++ * set to the external address that the STUN clients detect. Note that in
++ * this case, it will not be possible for clients to use UDP with servers
++ * between the NATs.
++ *
++ * If no destaction is specified, auto is used.
++ * destaction=auto: strip destination parameter if it is not stunaddr.
++ * destaction=strip: always strip destination parameter (not recommended).
++ * destaction=none: do not touch destination parameter (not recommended).
++ */
++
++#include <linux/module.h>
++#include <net/tcp.h>
++#include <net/netfilter/nf_nat_helper.h>
++#include <net/netfilter/nf_nat_rule.h>
++#include <linux/netfilter/nf_conntrack_rtsp.h>
++#include <net/netfilter/nf_conntrack_expect.h>
++
++#include <linux/inet.h>
++#include <linux/ctype.h>
++#define NF_NEED_STRNCASECMP
++#define NF_NEED_STRTOU16
++#include <linux/netfilter_helpers.h>
++#define NF_NEED_MIME_NEXTLINE
++#include <linux/netfilter_mime.h>
++
++#define INFOP(fmt, args...) printk(KERN_INFO "%s: %s: " fmt, __FILE__, __FUNCTION__ , ## args)
++#if 0
++#define DEBUGP(fmt, args...) printk(KERN_DEBUG "%s: %s: " fmt, __FILE__, __FUNCTION__ , ## args)
++#else
++#define DEBUGP(fmt, args...)
++#endif
++
++#define MAX_PORTS 8
++#define DSTACT_AUTO 0
++#define DSTACT_STRIP 1
++#define DSTACT_NONE 2
++
++static char* stunaddr = NULL;
++static char* destaction = NULL;
++
++static u_int32_t extip = 0;
++static int dstact = 0;
++
++MODULE_AUTHOR("Tom Marshall <tmarshall at real.com>");
++MODULE_DESCRIPTION("RTSP network address translation module");
++MODULE_LICENSE("GPL");
++module_param(stunaddr, charp, 0644);
++MODULE_PARM_DESC(stunaddr, "Address for detecting STUN");
++module_param(destaction, charp, 0644);
++MODULE_PARM_DESC(destaction, "Action for destination parameter (auto/strip/none)");
++
++#define SKIP_WSPACE(ptr,len,off) while(off < len && isspace(*(ptr+off))) { off++; }
++
++/*** helper functions ***/
++
++static void
++get_skb_tcpdata(struct sk_buff* skb, char** pptcpdata, uint* ptcpdatalen)
++{
++ struct iphdr* iph = ip_hdr(skb);
++ struct tcphdr* tcph = (void *)iph + ip_hdrlen(skb);
++
++ *pptcpdata = (char*)tcph + tcph->doff*4;
++ *ptcpdatalen = ((char*)skb_transport_header(skb) + skb->len) - *pptcpdata;
++}
++
++/*** nat functions ***/
++
++/*
++ * Mangle the "Transport:" header:
++ * - Replace all occurences of "client_port=<spec>"
++ * - Handle destination parameter
++ *
++ * In:
++ * ct, ctinfo = conntrack context
++ * pskb = packet
++ * tranoff = Transport header offset from TCP data
++ * tranlen = Transport header length (incl. CRLF)
++ * rport_lo = replacement low port (host endian)
++ * rport_hi = replacement high port (host endian)
++ *
++ * Returns packet size difference.
++ *
++ * Assumes that a complete transport header is present, ending with CR or LF
++ */
++static int
++rtsp_mangle_tran(enum ip_conntrack_info ctinfo,
++ struct nf_conntrack_expect* exp,
++ struct ip_ct_rtsp_expect* prtspexp,
++ struct sk_buff** pskb, uint tranoff, uint tranlen)
++{
++ char* ptcp;
++ uint tcplen;
++ char* ptran;
++ char rbuf1[16]; /* Replacement buffer (one port) */
++ uint rbuf1len; /* Replacement len (one port) */
++ char rbufa[16]; /* Replacement buffer (all ports) */
++ uint rbufalen; /* Replacement len (all ports) */
++ u_int32_t newip;
++ u_int16_t loport, hiport;
++ uint off = 0;
++ uint diff; /* Number of bytes we removed */
++
++ struct nf_conn *ct = exp->master;
++ struct nf_conntrack_tuple *t;
++
++ char szextaddr[15+1];
++ uint extaddrlen;
++ int is_stun;
++
++ get_skb_tcpdata(*pskb, &ptcp, &tcplen);
++ ptran = ptcp+tranoff;
++
++ if (tranoff+tranlen > tcplen || tcplen-tranoff < tranlen ||
++ tranlen < 10 || !iseol(ptran[tranlen-1]) ||
++ nf_strncasecmp(ptran, "Transport:", 10) != 0)
++ {
++ INFOP("sanity check failed\n");
++ return 0;
++ }
++ off += 10;
++ SKIP_WSPACE(ptcp+tranoff, tranlen, off);
++
++ newip = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip;
++ t = &exp->tuple;
++ t->dst.u3.ip = newip;
++
++ extaddrlen = extip ? sprintf(szextaddr, "%u.%u.%u.%u", NIPQUAD(extip))
++ : sprintf(szextaddr, "%u.%u.%u.%u", NIPQUAD(newip));
++ DEBUGP("stunaddr=%s (%s)\n", szextaddr, (extip?"forced":"auto"));
++
++ rbuf1len = rbufalen = 0;
++ switch (prtspexp->pbtype)
++ {
++ case pb_single:
++ for (loport = prtspexp->loport; loport != 0; loport++) /* XXX: improper wrap? */
++ {
++ t->dst.u.udp.port = htons(loport);
++ if (nf_conntrack_expect_related(exp) == 0)
++ {
++ DEBUGP("using port %hu\n", loport);
++ break;
++ }
++ }
++ if (loport != 0)
++ {
++ rbuf1len = sprintf(rbuf1, "%hu", loport);
++ rbufalen = sprintf(rbufa, "%hu", loport);
++ }
++ break;
++ case pb_range:
++ for (loport = prtspexp->loport; loport != 0; loport += 2) /* XXX: improper wrap? */
++ {
++ t->dst.u.udp.port = htons(loport);
++ if (nf_conntrack_expect_related(exp) == 0)
++ {
++ hiport = loport + ~exp->mask.dst.u.udp.port;
++ DEBUGP("using ports %hu-%hu\n", loport, hiport);
++ break;
++ }
++ }
++ if (loport != 0)
++ {
++ rbuf1len = sprintf(rbuf1, "%hu", loport);
++ rbufalen = sprintf(rbufa, "%hu-%hu", loport, loport+1);
++ }
++ break;
++ case pb_discon:
++ for (loport = prtspexp->loport; loport != 0; loport++) /* XXX: improper wrap? */
++ {
++ t->dst.u.udp.port = htons(loport);
++ if (nf_conntrack_expect_related(exp) == 0)
++ {
++ DEBUGP("using port %hu (1 of 2)\n", loport);
++ break;
++ }
++ }
++ for (hiport = prtspexp->hiport; hiport != 0; hiport++) /* XXX: improper wrap? */
++ {
++ t->dst.u.udp.port = htons(hiport);
++ if (nf_conntrack_expect_related(exp) == 0)
++ {
++ DEBUGP("using port %hu (2 of 2)\n", hiport);
++ break;
++ }
++ }
++ if (loport != 0 && hiport != 0)
++ {
++ rbuf1len = sprintf(rbuf1, "%hu", loport);
++ if (hiport == loport+1)
++ {
++ rbufalen = sprintf(rbufa, "%hu-%hu", loport, hiport);
++ }
++ else
++ {
++ rbufalen = sprintf(rbufa, "%hu/%hu", loport, hiport);
++ }
++ }
++ break;
++ }
++
++ if (rbuf1len == 0)
++ {
++ return 0; /* cannot get replacement port(s) */
++ }
++
++ /* Transport: tran;field;field=val,tran;field;field=val,... */
++ while (off < tranlen)
++ {
++ uint saveoff;
++ const char* pparamend;
++ uint nextparamoff;
++
++ pparamend = memchr(ptran+off, ',', tranlen-off);
++ pparamend = (pparamend == NULL) ? ptran+tranlen : pparamend+1;
++ nextparamoff = pparamend-ptcp;
++
++ /*
++ * We pass over each param twice. On the first pass, we look for a
++ * destination= field. It is handled by the security policy. If it
++ * is present, allowed, and equal to our external address, we assume
++ * that STUN is being used and we leave the client_port= field alone.
++ */
++ is_stun = 0;
++ saveoff = off;
++ while (off < nextparamoff)
++ {
++ const char* pfieldend;
++ uint nextfieldoff;
++
++ pfieldend = memchr(ptran+off, ';', nextparamoff-off);
++ nextfieldoff = (pfieldend == NULL) ? nextparamoff : pfieldend-ptran+1;
++
++ if (dstact != DSTACT_NONE && strncmp(ptran+off, "destination=", 12) == 0)
++ {
++ if (strncmp(ptran+off+12, szextaddr, extaddrlen) == 0)
++ {
++ is_stun = 1;
++ }
++ if (dstact == DSTACT_STRIP || (dstact == DSTACT_AUTO && !is_stun))
++ {
++ diff = nextfieldoff-off;
++ if (!nf_nat_mangle_tcp_packet(pskb, ct, ctinfo,
++ off, diff, NULL, 0))
++ {
++ /* mangle failed, all we can do is bail */
++ nf_conntrack_unexpect_related(exp);
++ return 0;
++ }
++ get_skb_tcpdata(*pskb, &ptcp, &tcplen);
++ ptran = ptcp+tranoff;
++ tranlen -= diff;
++ nextparamoff -= diff;
++ nextfieldoff -= diff;
++ }
++ }
++
++ off = nextfieldoff;
++ }
++ if (is_stun)
++ {
++ continue;
++ }
++ off = saveoff;
++ while (off < nextparamoff)
++ {
++ const char* pfieldend;
++ uint nextfieldoff;
++
++ pfieldend = memchr(ptran+off, ';', nextparamoff-off);
++ nextfieldoff = (pfieldend == NULL) ? nextparamoff : pfieldend-ptran+1;
++
++ if (strncmp(ptran+off, "client_port=", 12) == 0)
++ {
++ u_int16_t port;
++ uint numlen;
++ uint origoff;
++ uint origlen;
++ char* rbuf = rbuf1;
++ uint rbuflen = rbuf1len;
++
++ off += 12;
++ origoff = (ptran-ptcp)+off;
++ origlen = 0;
++ numlen = nf_strtou16(ptran+off, &port);
++ off += numlen;
++ origlen += numlen;
++ if (port != prtspexp->loport)
++ {
++ DEBUGP("multiple ports found, port %hu ignored\n", port);
++ }
++ else
++ {
++ if (ptran[off] == '-' || ptran[off] == '/')
++ {
++ off++;
++ origlen++;
++ numlen = nf_strtou16(ptran+off, &port);
++ off += numlen;
++ origlen += numlen;
++ rbuf = rbufa;
++ rbuflen = rbufalen;
++ }
++
++ /*
++ * note we cannot just memcpy() if the sizes are the same.
++ * the mangle function does skb resizing, checks for a
++ * cloned skb, and updates the checksums.
++ *
++ * parameter 4 below is offset from start of tcp data.
++ */
++ diff = origlen-rbuflen;
++ if (!nf_nat_mangle_tcp_packet(pskb, ct, ctinfo,
++ origoff, origlen, rbuf, rbuflen))
++ {
++ /* mangle failed, all we can do is bail */
++ nf_conntrack_unexpect_related(exp);
++ return 0;
++ }
++ get_skb_tcpdata(*pskb, &ptcp, &tcplen);
++ ptran = ptcp+tranoff;
++ tranlen -= diff;
++ nextparamoff -= diff;
++ nextfieldoff -= diff;
++ }
++ }
++
++ off = nextfieldoff;
++ }
++
++ off = nextparamoff;
++ }
++
++ return 1;
++}
++
++static uint
++help_out(struct sk_buff **pskb, enum ip_conntrack_info ctinfo,
++ unsigned int matchoff, unsigned int matchlen, struct ip_ct_rtsp_expect* prtspexp,
++ struct nf_conntrack_expect* exp)
++{
++ char* ptcp;
++ uint tcplen;
++ uint hdrsoff;
++ uint hdrslen;
++ uint lineoff;
++ uint linelen;
++ uint off;
++
++ //struct iphdr* iph = (struct iphdr*)(*pskb)->nh.iph;
++ //struct tcphdr* tcph = (struct tcphdr*)((void*)iph + iph->ihl*4);
++
++ get_skb_tcpdata(*pskb, &ptcp, &tcplen);
++ hdrsoff = matchoff;//exp->seq - ntohl(tcph->seq);
++ hdrslen = matchlen;
++ off = hdrsoff;
++ DEBUGP("NAT rtsp help_out\n");
++
++ while (nf_mime_nextline(ptcp, hdrsoff+hdrslen, &off, &lineoff, &linelen))
++ {
++ if (linelen == 0)
++ {
++ break;
++ }
++ if (off > hdrsoff+hdrslen)
++ {
++ INFOP("!! overrun !!");
++ break;
++ }
++ DEBUGP("hdr: len=%u, %.*s", linelen, (int)linelen, ptcp+lineoff);
++
++ if (nf_strncasecmp(ptcp+lineoff, "Transport:", 10) == 0)
++ {
++ uint oldtcplen = tcplen;
++ DEBUGP("hdr: Transport\n");
++ if (!rtsp_mangle_tran(ctinfo, exp, prtspexp, pskb, lineoff, linelen))
++ {
++ DEBUGP("hdr: Transport mangle failed");
++ break;
++ }
++ get_skb_tcpdata(*pskb, &ptcp, &tcplen);
++ hdrslen -= (oldtcplen-tcplen);
++ off -= (oldtcplen-tcplen);
++ lineoff -= (oldtcplen-tcplen);
++ linelen -= (oldtcplen-tcplen);
++ DEBUGP("rep: len=%u, %.*s", linelen, (int)linelen, ptcp+lineoff);
++ }
++ }
++
++ return NF_ACCEPT;
++}
++
++static unsigned int
++help(struct sk_buff **pskb, enum ip_conntrack_info ctinfo,
++ unsigned int matchoff, unsigned int matchlen, struct ip_ct_rtsp_expect* prtspexp,
++ struct nf_conntrack_expect* exp)
++{
++ int dir = CTINFO2DIR(ctinfo);
++ int rc = NF_ACCEPT;
++
++ switch (dir)
++ {
++ case IP_CT_DIR_ORIGINAL:
++ rc = help_out(pskb, ctinfo, matchoff, matchlen, prtspexp, exp);
++ break;
++ case IP_CT_DIR_REPLY:
++ DEBUGP("unmangle ! %u\n", ctinfo);
++ /* XXX: unmangle */
++ rc = NF_ACCEPT;
++ break;
++ }
++ //UNLOCK_BH(&ip_rtsp_lock);
++
++ return rc;
++}
++
++static void expected(struct nf_conn* ct, struct nf_conntrack_expect *exp)
++{
++ struct nf_nat_multi_range_compat mr;
++ u_int32_t newdstip, newsrcip, newip;
++
++ struct nf_conn *master = ct->master;
++
++ newdstip = master->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip;
++ newsrcip = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip;
++ //FIXME (how to port that ?)
++ //code from 2.4 : newip = (HOOK2MANIP(hooknum) == IP_NAT_MANIP_SRC) ? newsrcip : newdstip;
++ newip = newdstip;
++
++ DEBUGP("newsrcip=%u.%u.%u.%u, newdstip=%u.%u.%u.%u, newip=%u.%u.%u.%u\n",
++ NIPQUAD(newsrcip), NIPQUAD(newdstip), NIPQUAD(newip));
++
++ mr.rangesize = 1;
++ // We don't want to manip the per-protocol, just the IPs.
++ mr.range[0].flags = IP_NAT_RANGE_MAP_IPS;
++ mr.range[0].min_ip = mr.range[0].max_ip = newip;
++
++ nf_nat_setup_info(ct, &mr.range[0], NF_IP_PRE_ROUTING);
++}
++
++
++static void __exit fini(void)
++{
++ nf_nat_rtsp_hook = NULL;
++ nf_nat_rtsp_hook_expectfn = NULL;
++ synchronize_net();
++}
++
++static int __init init(void)
++{
++ printk("nf_nat_rtsp v" IP_NF_RTSP_VERSION " loading\n");
++
++ BUG_ON(nf_nat_rtsp_hook);
++ nf_nat_rtsp_hook = help;
++ nf_nat_rtsp_hook_expectfn = &expected;
++
++ if (stunaddr != NULL)
++ extip = in_aton(stunaddr);
++
++ if (destaction != NULL) {
++ if (strcmp(destaction, "auto") == 0)
++ dstact = DSTACT_AUTO;
++
++ if (strcmp(destaction, "strip") == 0)
++ dstact = DSTACT_STRIP;
++
++ if (strcmp(destaction, "none") == 0)
++ dstact = DSTACT_NONE;
++ }
++
++ return 0;
++}
++
++module_init(init);
++module_exit(fini);
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/pkt_sched.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/pkt_sched.h 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/pkt_sched.h 2007-09-21 16:24:04.000000000 +0800
+@@ -155,8 +155,40 @@
+ *
+ * The only reason for this is efficiency, it is possible
+ * to change these parameters in compile time.
++ *
++ * If you need to play with these values use esfq instead.
+ */
+
++/* ESFQ section */
++
++enum
++{
++ /* traditional */
++ TCA_SFQ_HASH_CLASSIC,
++ TCA_SFQ_HASH_DST,
++ TCA_SFQ_HASH_SRC,
++ TCA_SFQ_HASH_FWMARK,
++ /* direct */
++ TCA_SFQ_HASH_DSTDIR,
++ TCA_SFQ_HASH_SRCDIR,
++ TCA_SFQ_HASH_FWMARKDIR,
++ /* conntrack */
++ TCA_SFQ_HASH_CTORIGDST,
++ TCA_SFQ_HASH_CTORIGSRC,
++ TCA_SFQ_HASH_CTREPLDST,
++ TCA_SFQ_HASH_CTREPLSRC,
++};
++
++struct tc_esfq_qopt
++{
++ unsigned quantum; /* Bytes per round allocated to flow */
++ int perturb_period; /* Period of hash perturbation */
++ __u32 limit; /* Maximal packets in queue */
++ unsigned divisor; /* Hash divisor */
++ unsigned flows; /* Maximal number of flows */
++ unsigned hash_kind; /* Hash function to use for flow identification */
++};
++
+ /* RED section */
+
+ enum
+Index: linux-2.6.23-rc6/net/sched/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/net/sched/Kconfig 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/sched/Kconfig 2007-09-21 16:24:04.000000000 +0800
+@@ -144,6 +144,26 @@
+ To compile this code as a module, choose M here: the
+ module will be called sch_sfq.
+
++config NET_SCH_ESFQ
++ tristate "Enhanced Stochastic Fairness Queueing (ESFQ)"
++ ---help---
++ Say Y here if you want to use the Enhanced Stochastic Fairness
++ Queueing (ESFQ) packet scheduling algorithm for some of your network
++ devices or as a leaf discipline for a classful qdisc such as HTB or
++ CBQ (see the top of <file:net/sched/sch_esfq.c> for details and
++ references to the SFQ algorithm).
++
++ This is an enchanced SFQ version which allows you to control some
++ hardcoded values in the SFQ scheduler.
++
++ ESFQ also adds control of the hash function used to identify packet
++ flows. The original SFQ discipline hashes by connection; ESFQ add
++ several other hashing methods, such as by src IP or by dst IP, which
++ can be more fair to users in some networking situations.
++
++ To compile this code as a module, choose M here: the
++ module will be called sch_esfq.
++
+ config NET_SCH_TEQL
+ tristate "True Link Equalizer (TEQL)"
+ ---help---
+Index: linux-2.6.23-rc6/net/sched/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/net/sched/Makefile 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/sched/Makefile 2007-09-21 16:24:04.000000000 +0800
+@@ -22,6 +22,7 @@
+ obj-$(CONFIG_NET_SCH_INGRESS) += sch_ingress.o
+ obj-$(CONFIG_NET_SCH_DSMARK) += sch_dsmark.o
+ obj-$(CONFIG_NET_SCH_SFQ) += sch_sfq.o
++obj-$(CONFIG_NET_SCH_ESFQ) += sch_esfq.o
+ obj-$(CONFIG_NET_SCH_TBF) += sch_tbf.o
+ obj-$(CONFIG_NET_SCH_TEQL) += sch_teql.o
+ obj-$(CONFIG_NET_SCH_PRIO) += sch_prio.o
+Index: linux-2.6.23-rc6/net/sched/sch_esfq.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/net/sched/sch_esfq.c 2007-09-21 16:24:04.000000000 +0800
+@@ -0,0 +1,704 @@
++/*
++ * net/sched/sch_esfq.c Extended Stochastic Fairness Queueing discipline.
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ *
++ * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
++ *
++ * Changes: Alexander Atanasov, <alex@ssi.bg>
++ * Added dynamic depth,limit,divisor,hash_kind options.
++ * Added dst and src hashes.
++ *
++ * Alexander Clouter, <alex@digriz.org.uk>
++ * Ported ESFQ to Linux 2.6.
++ *
++ * Corey Hickey, <bugfood-c@fatooh.org>
++ * Maintenance of the Linux 2.6 port.
++ * Added fwmark hash (thanks to Robert Kurjata).
++ * Added direct hashing for src, dst, and fwmark.
++ * Added usage of jhash.
++ *
++ */
++
++#include <linux/module.h>
++#include <asm/uaccess.h>
++#include <asm/system.h>
++#include <linux/bitops.h>
++#include <linux/types.h>
++#include <linux/kernel.h>
++#include <linux/jiffies.h>
++#include <linux/string.h>
++#include <linux/mm.h>
++#include <linux/socket.h>
++#include <linux/sockios.h>
++#include <linux/in.h>
++#include <linux/errno.h>
++#include <linux/interrupt.h>
++#include <linux/if_ether.h>
++#include <linux/inet.h>
++#include <linux/netdevice.h>
++#include <linux/etherdevice.h>
++#include <linux/notifier.h>
++#include <linux/init.h>
++#include <net/ip.h>
++#include <linux/ipv6.h>
++#include <net/route.h>
++#include <linux/skbuff.h>
++#include <net/sock.h>
++#include <net/pkt_sched.h>
++#include <linux/jhash.h>
++
++#ifdef CONFIG_NF_CONNTRACK_ENABLED
++#include <net/netfilter/nf_conntrack.h>
++#endif
++
++/* Stochastic Fairness Queuing algorithm.
++ For more comments look at sch_sfq.c.
++ The difference is that you can change limit, depth,
++ hash table size and choose alternate hash types.
++
++ classic: same as in sch_sfq.c
++ dst: destination IP address
++ src: source IP address
++ fwmark: netfilter mark value
++ dst_direct:
++ src_direct:
++ fwmark_direct: direct hashing of the above sources
++ ctorigdst: original destination IP address
++ ctorigsrc: original source IP address
++ ctrepldst: reply destination IP address
++ ctreplsrc: reply source IP
++
++*/
++
++
++/* This type should contain at least SFQ_DEPTH*2 values */
++typedef unsigned int esfq_index;
++
++struct esfq_head
++{
++ esfq_index next;
++ esfq_index prev;
++};
++
++struct esfq_sched_data
++{
++/* Parameters */
++ int perturb_period;
++ unsigned quantum; /* Allotment per round: MUST BE >= MTU */
++ int limit;
++ unsigned depth;
++ unsigned hash_divisor;
++ unsigned hash_kind;
++/* Variables */
++ struct timer_list perturb_timer;
++ int perturbation;
++ esfq_index tail; /* Index of current slot in round */
++ esfq_index max_depth; /* Maximal depth */
++
++ esfq_index *ht; /* Hash table */
++ esfq_index *next; /* Active slots link */
++ short *allot; /* Current allotment per slot */
++ unsigned short *hash; /* Hash value indexed by slots */
++ struct sk_buff_head *qs; /* Slot queue */
++ struct esfq_head *dep; /* Linked list of slots, indexed by depth */
++ unsigned dyn_min; /* For dynamic divisor adjustment; minimum value seen */
++ unsigned dyn_max; /* maximum value seen */
++ unsigned dyn_range; /* saved range */
++};
++
++/* This contains the info we will hash. */
++struct esfq_packet_info
++{
++ u32 proto; /* protocol or port */
++ u32 src; /* source from packet header */
++ u32 dst; /* destination from packet header */
++ u32 ctorigsrc; /* original source from conntrack */
++ u32 ctorigdst; /* original destination from conntrack */
++ u32 ctreplsrc; /* reply source from conntrack */
++ u32 ctrepldst; /* reply destination from conntrack */
++ u32 mark; /* netfilter mark (fwmark) */
++};
++
++/* Hash input values directly into the "nearest" slot, taking into account the
++ * range of input values seen. This is most useful when the hash table is at
++ * least as large as the range of possible values.
++ * Note: this functionality was added before the change to using jhash, and may
++ * no longer be useful. */
++static __inline__ unsigned esfq_hash_direct(struct esfq_sched_data *q, u32 h)
++{
++ /* adjust minimum and maximum */
++ if (h < q->dyn_min || h > q->dyn_max) {
++ q->dyn_min = h < q->dyn_min ? h : q->dyn_min;
++ q->dyn_max = h > q->dyn_max ? h : q->dyn_max;
++
++ /* find new range */
++ if ((q->dyn_range = q->dyn_max - q->dyn_min) >= q->hash_divisor)
++ printk(KERN_WARNING "ESFQ: (direct hash) Input range %u is larger than hash "
++ "table. See ESFQ README for details.\n", q->dyn_range);
++ }
++
++ /* hash input values into slot numbers */
++ if (q->dyn_min == q->dyn_max)
++ return 0; /* only one value seen; avoid division by 0 */
++ else
++ return (h - q->dyn_min) * (q->hash_divisor - 1) / q->dyn_range;
++}
++
++static __inline__ unsigned esfq_jhash_1word(struct esfq_sched_data *q,u32 a)
++{
++ return jhash_1word(a, q->perturbation) & (q->hash_divisor-1);
++}
++
++static __inline__ unsigned esfq_jhash_2words(struct esfq_sched_data *q, u32 a, u32 b)
++{
++ return jhash_2words(a, b, q->perturbation) & (q->hash_divisor-1);
++}
++
++static __inline__ unsigned esfq_jhash_3words(struct esfq_sched_data *q, u32 a, u32 b, u32 c)
++{
++ return jhash_3words(a, b, c, q->perturbation) & (q->hash_divisor-1);
++}
++
++
++static unsigned esfq_hash(struct esfq_sched_data *q, struct sk_buff *skb)
++{
++ struct esfq_packet_info info;
++#ifdef CONFIG_NF_CONNTRACK_ENABLED
++ enum ip_conntrack_info ctinfo;
++ struct nf_conn *ct = nf_ct_get(skb, &ctinfo);
++#endif
++
++ switch (skb->protocol) {
++ case __constant_htons(ETH_P_IP):
++ {
++ struct iphdr *iph = ip_hdr(skb);
++ info.dst = iph->daddr;
++ info.src = iph->saddr;
++ if (!(iph->frag_off&htons(IP_MF|IP_OFFSET)) &&
++ (iph->protocol == IPPROTO_TCP ||
++ iph->protocol == IPPROTO_UDP ||
++ iph->protocol == IPPROTO_SCTP ||
++ iph->protocol == IPPROTO_DCCP ||
++ iph->protocol == IPPROTO_ESP))
++ info.proto = *(((u32*)iph) + iph->ihl);
++ else
++ info.proto = iph->protocol;
++ break;
++ }
++ case __constant_htons(ETH_P_IPV6):
++ {
++ struct ipv6hdr *iph = ipv6_hdr(skb);
++ /* Hash ipv6 addresses into a u32. This isn't ideal,
++ * but the code is simple. */
++ info.dst = jhash2(iph->daddr.s6_addr32, 4, q->perturbation);
++ info.src = jhash2(iph->saddr.s6_addr32, 4, q->perturbation);
++ if (iph->nexthdr == IPPROTO_TCP ||
++ iph->nexthdr == IPPROTO_UDP ||
++ iph->nexthdr == IPPROTO_SCTP ||
++ iph->nexthdr == IPPROTO_DCCP ||
++ iph->nexthdr == IPPROTO_ESP)
++ info.proto = *(u32*)&iph[1];
++ else
++ info.proto = iph->nexthdr;
++ break;
++ }
++ default:
++ info.dst = (u32)(unsigned long)skb->dst;
++ info.src = (u32)(unsigned long)skb->sk;
++ info.proto = skb->protocol;
++ }
++
++ info.mark = skb->mark;
++
++#ifdef CONFIG_NF_CONNTRACK_ENABLED
++ /* defaults if there is no conntrack info */
++ info.ctorigsrc = info.src;
++ info.ctorigdst = info.dst;
++ info.ctreplsrc = info.dst;
++ info.ctrepldst = info.src;
++ /* collect conntrack info */
++ if (ct && ct != &nf_conntrack_untracked) {
++ if (skb->protocol == __constant_htons(ETH_P_IP)) {
++ info.ctorigsrc = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip;
++ info.ctorigdst = ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip;
++ info.ctreplsrc = ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip;
++ info.ctrepldst = ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip;
++ }
++ else if (skb->protocol == __constant_htons(ETH_P_IPV6)) {
++ /* Again, hash ipv6 addresses into a single u32. */
++ info.ctorigsrc = jhash2(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.src.u3.ip6, 4, q->perturbation);
++ info.ctorigdst = jhash2(ct->tuplehash[IP_CT_DIR_ORIGINAL].tuple.dst.u3.ip6, 4, q->perturbation);
++ info.ctreplsrc = jhash2(ct->tuplehash[IP_CT_DIR_REPLY].tuple.src.u3.ip6, 4, q->perturbation);
++ info.ctrepldst = jhash2(ct->tuplehash[IP_CT_DIR_REPLY].tuple.dst.u3.ip6, 4, q->perturbation);
++ }
++
++ }
++#endif
++
++ switch(q->hash_kind)
++ {
++ case TCA_SFQ_HASH_CLASSIC:
++ return esfq_jhash_3words(q, info.dst, info.src, info.proto);
++ case TCA_SFQ_HASH_DST:
++ return esfq_jhash_1word(q, info.dst);
++ case TCA_SFQ_HASH_DSTDIR:
++ return esfq_hash_direct(q, ntohl(info.dst));
++ case TCA_SFQ_HASH_SRC:
++ return esfq_jhash_1word(q, info.src);
++ case TCA_SFQ_HASH_SRCDIR:
++ return esfq_hash_direct(q, ntohl(info.src));
++ case TCA_SFQ_HASH_FWMARK:
++ return esfq_jhash_1word(q, info.mark);
++ case TCA_SFQ_HASH_FWMARKDIR:
++ return esfq_hash_direct(q, info.mark);
++#ifdef CONFIG_NF_CONNTRACK_ENABLED
++ case TCA_SFQ_HASH_CTORIGDST:
++ return esfq_jhash_1word(q, info.ctorigdst);
++ case TCA_SFQ_HASH_CTORIGSRC:
++ return esfq_jhash_1word(q, info.ctorigsrc);
++ case TCA_SFQ_HASH_CTREPLDST:
++ return esfq_jhash_1word(q, info.ctrepldst);
++ case TCA_SFQ_HASH_CTREPLSRC:
++ return esfq_jhash_1word(q, info.ctreplsrc);
++#endif
++ default:
++ if (net_ratelimit())
++ printk(KERN_WARNING "ESFQ: Unknown hash method. Falling back to classic.\n");
++ }
++ return esfq_jhash_3words(q, info.dst, info.src, info.proto);
++}
++
++static inline void esfq_link(struct esfq_sched_data *q, esfq_index x)
++{
++ esfq_index p, n;
++ int d = q->qs[x].qlen + q->depth;
++
++ p = d;
++ n = q->dep[d].next;
++ q->dep[x].next = n;
++ q->dep[x].prev = p;
++ q->dep[p].next = q->dep[n].prev = x;
++}
++
++static inline void esfq_dec(struct esfq_sched_data *q, esfq_index x)
++{
++ esfq_index p, n;
++
++ n = q->dep[x].next;
++ p = q->dep[x].prev;
++ q->dep[p].next = n;
++ q->dep[n].prev = p;
++
++ if (n == p && q->max_depth == q->qs[x].qlen + 1)
++ q->max_depth--;
++
++ esfq_link(q, x);
++}
++
++static inline void esfq_inc(struct esfq_sched_data *q, esfq_index x)
++{
++ esfq_index p, n;
++ int d;
++
++ n = q->dep[x].next;
++ p = q->dep[x].prev;
++ q->dep[p].next = n;
++ q->dep[n].prev = p;
++ d = q->qs[x].qlen;
++ if (q->max_depth < d)
++ q->max_depth = d;
++
++ esfq_link(q, x);
++}
++
++static unsigned int esfq_drop(struct Qdisc *sch)
++{
++ struct esfq_sched_data *q = qdisc_priv(sch);
++ esfq_index d = q->max_depth;
++ struct sk_buff *skb;
++ unsigned int len;
++
++ /* Queue is full! Find the longest slot and
++ drop a packet from it */
++
++ if (d > 1) {
++ esfq_index x = q->dep[d+q->depth].next;
++ skb = q->qs[x].prev;
++ len = skb->len;
++ __skb_unlink(skb, &q->qs[x]);
++ kfree_skb(skb);
++ esfq_dec(q, x);
++ sch->q.qlen--;
++ sch->qstats.drops++;
++ sch->qstats.backlog -= len;
++ return len;
++ }
++
++ if (d == 1) {
++ /* It is difficult to believe, but ALL THE SLOTS HAVE LENGTH 1. */
++ d = q->next[q->tail];
++ q->next[q->tail] = q->next[d];
++ q->allot[q->next[d]] += q->quantum;
++ skb = q->qs[d].prev;
++ len = skb->len;
++ __skb_unlink(skb, &q->qs[d]);
++ kfree_skb(skb);
++ esfq_dec(q, d);
++ sch->q.qlen--;
++ q->ht[q->hash[d]] = q->depth;
++ sch->qstats.drops++;
++ sch->qstats.backlog -= len;
++ return len;
++ }
++
++ return 0;
++}
++
++static int
++esfq_enqueue(struct sk_buff *skb, struct Qdisc* sch)
++{
++ struct esfq_sched_data *q = qdisc_priv(sch);
++ unsigned hash = esfq_hash(q, skb);
++ unsigned depth = q->depth;
++ esfq_index x;
++
++ x = q->ht[hash];
++ if (x == depth) {
++ q->ht[hash] = x = q->dep[depth].next;
++ q->hash[x] = hash;
++ }
++ sch->qstats.backlog += skb->len;
++ __skb_queue_tail(&q->qs[x], skb);
++ esfq_inc(q, x);
++ if (q->qs[x].qlen == 1) { /* The flow is new */
++ if (q->tail == depth) { /* It is the first flow */
++ q->tail = x;
++ q->next[x] = x;
++ q->allot[x] = q->quantum;
++ } else {
++ q->next[x] = q->next[q->tail];
++ q->next[q->tail] = x;
++ q->tail = x;
++ }
++ }
++ if (++sch->q.qlen < q->limit-1) {
++ sch->bstats.bytes += skb->len;
++ sch->bstats.packets++;
++ return 0;
++ }
++
++ esfq_drop(sch);
++ return NET_XMIT_CN;
++}
++
++static int
++esfq_requeue(struct sk_buff *skb, struct Qdisc* sch)
++{
++ struct esfq_sched_data *q = qdisc_priv(sch);
++ unsigned hash = esfq_hash(q, skb);
++ unsigned depth = q->depth;
++ esfq_index x;
++
++ x = q->ht[hash];
++ if (x == depth) {
++ q->ht[hash] = x = q->dep[depth].next;
++ q->hash[x] = hash;
++ }
++ sch->qstats.backlog += skb->len;
++ __skb_queue_head(&q->qs[x], skb);
++ esfq_inc(q, x);
++ if (q->qs[x].qlen == 1) { /* The flow is new */
++ if (q->tail == depth) { /* It is the first flow */
++ q->tail = x;
++ q->next[x] = x;
++ q->allot[x] = q->quantum;
++ } else {
++ q->next[x] = q->next[q->tail];
++ q->next[q->tail] = x;
++ q->tail = x;
++ }
++ }
++ if (++sch->q.qlen < q->limit - 1) {
++ sch->qstats.requeues++;
++ return 0;
++ }
++
++ sch->qstats.drops++;
++ esfq_drop(sch);
++ return NET_XMIT_CN;
++}
++
++
++
++
++static struct sk_buff *
++esfq_dequeue(struct Qdisc* sch)
++{
++ struct esfq_sched_data *q = qdisc_priv(sch);
++ struct sk_buff *skb;
++ unsigned depth = q->depth;
++ esfq_index a, old_a;
++
++ /* No active slots */
++ if (q->tail == depth)
++ return NULL;
++
++ a = old_a = q->next[q->tail];
++
++ /* Grab packet */
++ skb = __skb_dequeue(&q->qs[a]);
++ esfq_dec(q, a);
++ sch->q.qlen--;
++ sch->qstats.backlog -= skb->len;
++
++ /* Is the slot empty? */
++ if (q->qs[a].qlen == 0) {
++ q->ht[q->hash[a]] = depth;
++ a = q->next[a];
++ if (a == old_a) {
++ q->tail = depth;
++ return skb;
++ }
++ q->next[q->tail] = a;
++ q->allot[a] += q->quantum;
++ } else if ((q->allot[a] -= skb->len) <= 0) {
++ q->tail = a;
++ a = q->next[a];
++ q->allot[a] += q->quantum;
++ }
++
++ return skb;
++}
++
++static void
++esfq_reset(struct Qdisc* sch)
++{
++ struct sk_buff *skb;
++
++ while ((skb = esfq_dequeue(sch)) != NULL)
++ kfree_skb(skb);
++}
++
++static void esfq_perturbation(unsigned long arg)
++{
++ struct Qdisc *sch = (struct Qdisc*)arg;
++ struct esfq_sched_data *q = qdisc_priv(sch);
++
++ q->perturbation = net_random()&0x1F;
++
++ if (q->perturb_period) {
++ q->perturb_timer.expires = jiffies + q->perturb_period;
++ add_timer(&q->perturb_timer);
++ }
++}
++
++static int esfq_change(struct Qdisc *sch, struct rtattr *opt)
++{
++ struct esfq_sched_data *q = qdisc_priv(sch);
++ struct tc_esfq_qopt *ctl = RTA_DATA(opt);
++ int old_perturb = q->perturb_period;
++
++ if (opt->rta_len < RTA_LENGTH(sizeof(*ctl)))
++ return -EINVAL;
++
++ sch_tree_lock(sch);
++ q->quantum = ctl->quantum ? : psched_mtu(sch->dev);
++ q->perturb_period = ctl->perturb_period*HZ;
++// q->hash_divisor = ctl->divisor;
++// q->tail = q->limit = q->depth = ctl->flows;
++
++ if (ctl->limit)
++ q->limit = min_t(u32, ctl->limit, q->depth);
++
++ if (ctl->hash_kind) {
++ q->hash_kind = ctl->hash_kind;
++ if (q->hash_kind != TCA_SFQ_HASH_CLASSIC)
++ q->perturb_period = 0;
++ }
++
++ // is sch_tree_lock enough to do this ?
++ while (sch->q.qlen >= q->limit-1)
++ esfq_drop(sch);
++
++ if (old_perturb)
++ del_timer(&q->perturb_timer);
++ if (q->perturb_period) {
++ q->perturb_timer.expires = jiffies + q->perturb_period;
++ add_timer(&q->perturb_timer);
++ } else {
++ q->perturbation = 0;
++ }
++ sch_tree_unlock(sch);
++ return 0;
++}
++
++static int esfq_init(struct Qdisc *sch, struct rtattr *opt)
++{
++ struct esfq_sched_data *q = qdisc_priv(sch);
++ struct tc_esfq_qopt *ctl;
++ esfq_index p = ~0U/2;
++ int i;
++
++ if (opt && opt->rta_len < RTA_LENGTH(sizeof(*ctl)))
++ return -EINVAL;
++
++ init_timer(&q->perturb_timer);
++ q->perturb_timer.data = (unsigned long)sch;
++ q->perturb_timer.function = esfq_perturbation;
++ q->perturbation = 0;
++ q->hash_kind = TCA_SFQ_HASH_CLASSIC;
++ q->max_depth = 0;
++ q->dyn_min = ~0U; /* maximum value for this type */
++ q->dyn_max = 0; /* dyn_min/dyn_max will be set properly upon first packet */
++ if (opt == NULL) {
++ q->quantum = psched_mtu(sch->dev);
++ q->perturb_period = 0;
++ q->hash_divisor = 1024;
++ q->tail = q->limit = q->depth = 128;
++
++ } else {
++ ctl = RTA_DATA(opt);
++ q->quantum = ctl->quantum ? : psched_mtu(sch->dev);
++ q->perturb_period = ctl->perturb_period*HZ;
++ q->hash_divisor = ctl->divisor ? : 1024;
++ q->tail = q->limit = q->depth = ctl->flows ? : 128;
++
++ if ( q->depth > p - 1 )
++ return -EINVAL;
++
++ if (ctl->limit)
++ q->limit = min_t(u32, ctl->limit, q->depth);
++
++ if (ctl->hash_kind) {
++ q->hash_kind = ctl->hash_kind;
++ }
++
++ if (q->perturb_period) {
++ q->perturb_timer.expires = jiffies + q->perturb_period;
++ add_timer(&q->perturb_timer);
++ }
++ }
++
++ q->ht = kmalloc(q->hash_divisor*sizeof(esfq_index), GFP_KERNEL);
++ if (!q->ht)
++ goto err_case;
++
++ q->dep = kmalloc((1+q->depth*2)*sizeof(struct esfq_head), GFP_KERNEL);
++ if (!q->dep)
++ goto err_case;
++ q->next = kmalloc(q->depth*sizeof(esfq_index), GFP_KERNEL);
++ if (!q->next)
++ goto err_case;
++
++ q->allot = kmalloc(q->depth*sizeof(short), GFP_KERNEL);
++ if (!q->allot)
++ goto err_case;
++ q->hash = kmalloc(q->depth*sizeof(unsigned short), GFP_KERNEL);
++ if (!q->hash)
++ goto err_case;
++ q->qs = kmalloc(q->depth*sizeof(struct sk_buff_head), GFP_KERNEL);
++ if (!q->qs)
++ goto err_case;
++
++ for (i=0; i< q->hash_divisor; i++)
++ q->ht[i] = q->depth;
++ for (i=0; i<q->depth; i++) {
++ skb_queue_head_init(&q->qs[i]);
++ q->dep[i+q->depth].next = i+q->depth;
++ q->dep[i+q->depth].prev = i+q->depth;
++ }
++
++ for (i=0; i<q->depth; i++)
++ esfq_link(q, i);
++ return 0;
++err_case:
++ del_timer(&q->perturb_timer);
++ if (q->ht)
++ kfree(q->ht);
++ if (q->dep)
++ kfree(q->dep);
++ if (q->next)
++ kfree(q->next);
++ if (q->allot)
++ kfree(q->allot);
++ if (q->hash)
++ kfree(q->hash);
++ if (q->qs)
++ kfree(q->qs);
++ return -ENOBUFS;
++}
++
++static void esfq_destroy(struct Qdisc *sch)
++{
++ struct esfq_sched_data *q = qdisc_priv(sch);
++ del_timer(&q->perturb_timer);
++ if(q->ht)
++ kfree(q->ht);
++ if(q->dep)
++ kfree(q->dep);
++ if(q->next)
++ kfree(q->next);
++ if(q->allot)
++ kfree(q->allot);
++ if(q->hash)
++ kfree(q->hash);
++ if(q->qs)
++ kfree(q->qs);
++}
++
++static int esfq_dump(struct Qdisc *sch, struct sk_buff *skb)
++{
++ struct esfq_sched_data *q = qdisc_priv(sch);
++ unsigned char *b = skb->tail;
++ struct tc_esfq_qopt opt;
++
++ opt.quantum = q->quantum;
++ opt.perturb_period = q->perturb_period/HZ;
++
++ opt.limit = q->limit;
++ opt.divisor = q->hash_divisor;
++ opt.flows = q->depth;
++ opt.hash_kind = q->hash_kind;
++
++ RTA_PUT(skb, TCA_OPTIONS, sizeof(opt), &opt);
++
++ return skb->len;
++
++rtattr_failure:
++ skb_trim(skb, b - skb->data);
++ return -1;
++}
++
++static struct Qdisc_ops esfq_qdisc_ops =
++{
++ .next = NULL,
++ .cl_ops = NULL,
++ .id = "esfq",
++ .priv_size = sizeof(struct esfq_sched_data),
++ .enqueue = esfq_enqueue,
++ .dequeue = esfq_dequeue,
++ .requeue = esfq_requeue,
++ .drop = esfq_drop,
++ .init = esfq_init,
++ .reset = esfq_reset,
++ .destroy = esfq_destroy,
++ .change = NULL, /* esfq_change - needs more work */
++ .dump = esfq_dump,
++ .owner = THIS_MODULE,
++};
++
++static int __init esfq_module_init(void)
++{
++ return register_qdisc(&esfq_qdisc_ops);
++}
++static void __exit esfq_module_exit(void)
++{
++ unregister_qdisc(&esfq_qdisc_ops);
++}
++module_init(esfq_module_init)
++module_exit(esfq_module_exit)
++MODULE_LICENSE("GPL");
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/rtnetlink.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/rtnetlink.h 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/rtnetlink.h 2007-09-21 16:24:04.000000000 +0800
+@@ -293,6 +293,8 @@
+ #define RTNH_F_DEAD 1 /* Nexthop is dead (used by multipath) */
+ #define RTNH_F_PERVASIVE 2 /* Do recursive gateway lookup */
+ #define RTNH_F_ONLINK 4 /* Gateway is forced on link */
++#define RTNH_F_SUSPECT 8 /* We don't know the real state */
++#define RTNH_F_BADSTATE (RTNH_F_DEAD | RTNH_F_SUSPECT)
+
+ /* Macros to handle hexthops */
+
+Index: linux-2.6.23-rc6/include/net/flow.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/net/flow.h 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/include/net/flow.h 2007-09-21 16:24:04.000000000 +0800
+@@ -19,6 +19,8 @@
+ struct {
+ __be32 daddr;
+ __be32 saddr;
++ __u32 lsrc;
++ __u32 gw;
+ __u8 tos;
+ __u8 scope;
+ } ip4_u;
+@@ -43,6 +45,8 @@
+ #define fl6_flowlabel nl_u.ip6_u.flowlabel
+ #define fl4_dst nl_u.ip4_u.daddr
+ #define fl4_src nl_u.ip4_u.saddr
++#define fl4_lsrc nl_u.ip4_u.lsrc
++#define fl4_gw nl_u.ip4_u.gw
+ #define fl4_tos nl_u.ip4_u.tos
+ #define fl4_scope nl_u.ip4_u.scope
+
+Index: linux-2.6.23-rc6/net/ipv4/route.c
+===================================================================
+--- linux-2.6.23-rc6.orig/net/ipv4/route.c 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/net/ipv4/route.c 2007-09-21 16:24:04.000000000 +0800
+@@ -1116,6 +1116,7 @@
+
+ /* Gateway is different ... */
+ rt->rt_gateway = new_gw;
++ if (rt->fl.fl4_gw) rt->fl.fl4_gw = new_gw;
+
+ /* Redirect received -> path was valid */
+ dst_confirm(&rth->u.dst);
+@@ -1551,6 +1552,7 @@
+ rth->fl.fl4_tos = tos;
+ rth->fl.mark = skb->mark;
+ rth->fl.fl4_src = saddr;
++ rth->fl.fl4_lsrc = 0;
+ rth->rt_src = saddr;
+ #ifdef CONFIG_NET_CLS_ROUTE
+ rth->u.dst.tclassid = itag;
+@@ -1561,6 +1563,7 @@
+ dev_hold(rth->u.dst.dev);
+ rth->idev = in_dev_get(rth->u.dst.dev);
+ rth->fl.oif = 0;
++ rth->fl.fl4_gw = 0;
+ rth->rt_gateway = daddr;
+ rth->rt_spec_dst= spec_dst;
+ rth->rt_type = RTN_MULTICAST;
+@@ -1624,7 +1627,7 @@
+ static inline int __mkroute_input(struct sk_buff *skb,
+ struct fib_result* res,
+ struct in_device *in_dev,
+- __be32 daddr, __be32 saddr, u32 tos,
++ __be32 daddr, __be32 saddr, u32 tos, u32 lsrc,
+ struct rtable **result)
+ {
+
+@@ -1659,6 +1662,7 @@
+ flags |= RTCF_DIRECTSRC;
+
+ if (out_dev == in_dev && err && !(flags & (RTCF_NAT | RTCF_MASQ)) &&
++ !lsrc &&
+ (IN_DEV_SHARED_MEDIA(out_dev) ||
+ inet_addr_onlink(out_dev, saddr, FIB_RES_GW(*res))))
+ flags |= RTCF_DOREDIRECT;
+@@ -1692,6 +1696,7 @@
+ rth->fl.mark = skb->mark;
+ rth->fl.fl4_src = saddr;
+ rth->rt_src = saddr;
++ rth->fl.fl4_lsrc = lsrc;
+ rth->rt_gateway = daddr;
+ rth->rt_iif =
+ rth->fl.iif = in_dev->dev->ifindex;
+@@ -1699,6 +1704,7 @@
+ dev_hold(rth->u.dst.dev);
+ rth->idev = in_dev_get(rth->u.dst.dev);
+ rth->fl.oif = 0;
++ rth->fl.fl4_gw = 0;
+ rth->rt_spec_dst= spec_dst;
+
+ rth->u.dst.input = ip_forward;
+@@ -1720,19 +1726,21 @@
+ struct fib_result* res,
+ const struct flowi *fl,
+ struct in_device *in_dev,
+- __be32 daddr, __be32 saddr, u32 tos)
++ __be32 daddr, __be32 saddr, u32 tos,
++ u32 lsrc)
+ {
+ struct rtable* rth = NULL;
+ int err;
+ unsigned hash;
+
++ fib_select_default(fl, res);
+ #ifdef CONFIG_IP_ROUTE_MULTIPATH
+- if (res->fi && res->fi->fib_nhs > 1 && fl->oif == 0)
++ if (res->fi && res->fi->fib_nhs > 1)
+ fib_select_multipath(fl, res);
+ #endif
+
+ /* create a routing cache entry */
+- err = __mkroute_input(skb, res, in_dev, daddr, saddr, tos, &rth);
++ err = __mkroute_input(skb, res, in_dev, daddr, saddr, tos, lsrc, &rth);
+ if (err)
+ return err;
+
+@@ -1752,18 +1760,18 @@
+ */
+
+ static int ip_route_input_slow(struct sk_buff *skb, __be32 daddr, __be32 saddr,
+- u8 tos, struct net_device *dev)
++ u8 tos, struct net_device *dev, u32 lsrc)
+ {
+ struct fib_result res;
+ struct in_device *in_dev = in_dev_get(dev);
+ struct flowi fl = { .nl_u = { .ip4_u =
+ { .daddr = daddr,
+- .saddr = saddr,
++ .saddr = lsrc ? : saddr,
+ .tos = tos,
+ .scope = RT_SCOPE_UNIVERSE,
+ } },
+ .mark = skb->mark,
+- .iif = dev->ifindex };
++ .iif = lsrc? loopback_dev.ifindex : dev->ifindex };
+ unsigned flags = 0;
+ u32 itag = 0;
+ struct rtable * rth;
+@@ -1796,6 +1804,12 @@
+ if (BADCLASS(daddr) || ZERONET(daddr) || LOOPBACK(daddr))
+ goto martian_destination;
+
++ if (lsrc) {
++ if (MULTICAST(lsrc) || BADCLASS(lsrc) ||
++ ZERONET(lsrc) || LOOPBACK(lsrc))
++ goto e_inval;
++ }
++
+ /*
+ * Now we are ready to route packet.
+ */
+@@ -1805,6 +1819,10 @@
+ goto no_route;
+ }
+ free_res = 1;
++ if (lsrc && res.type != RTN_UNICAST && res.type != RTN_NAT)
++ goto e_inval;
++ fl.iif = dev->ifindex;
++ fl.fl4_src = saddr;
+
+ RT_CACHE_STAT_INC(in_slow_tot);
+
+@@ -1829,7 +1847,7 @@
+ if (res.type != RTN_UNICAST)
+ goto martian_destination;
+
+- err = ip_mkroute_input(skb, &res, &fl, in_dev, daddr, saddr, tos);
++ err = ip_mkroute_input(skb, &res, &fl, in_dev, daddr, saddr, tos, lsrc);
+ if (err == -ENOBUFS)
+ goto e_nobufs;
+ if (err == -EINVAL)
+@@ -1844,6 +1862,8 @@
+ brd_input:
+ if (skb->protocol != htons(ETH_P_IP))
+ goto e_inval;
++ if (lsrc)
++ goto e_inval;
+
+ if (ZERONET(saddr))
+ spec_dst = inet_select_addr(dev, 0, RT_SCOPE_LINK);
+@@ -1884,6 +1904,7 @@
+ rth->u.dst.dev = &loopback_dev;
+ dev_hold(rth->u.dst.dev);
+ rth->idev = in_dev_get(rth->u.dst.dev);
++ rth->fl.fl4_gw = 0;
+ rth->rt_gateway = daddr;
+ rth->rt_spec_dst= spec_dst;
+ rth->u.dst.input= ip_local_deliver;
+@@ -1933,8 +1954,9 @@
+ goto e_inval;
+ }
+
+-int ip_route_input(struct sk_buff *skb, __be32 daddr, __be32 saddr,
+- u8 tos, struct net_device *dev)
++static inline int
++ip_route_input_cached(struct sk_buff *skb, __be32 daddr, __be32 saddr,
++ u8 tos, struct net_device *dev, u32 lsrc)
+ {
+ struct rtable * rth;
+ unsigned hash;
+@@ -1949,6 +1971,7 @@
+ if (rth->fl.fl4_dst == daddr &&
+ rth->fl.fl4_src == saddr &&
+ rth->fl.iif == iif &&
++ rth->fl.fl4_lsrc == lsrc &&
+ rth->fl.oif == 0 &&
+ rth->fl.mark == skb->mark &&
+ rth->fl.fl4_tos == tos) {
+@@ -1995,7 +2018,19 @@
+ rcu_read_unlock();
+ return -EINVAL;
+ }
+- return ip_route_input_slow(skb, daddr, saddr, tos, dev);
++ return ip_route_input_slow(skb, daddr, saddr, tos, dev, lsrc);
++}
++
++int ip_route_input(struct sk_buff *skb, u32 daddr, u32 saddr,
++ u8 tos, struct net_device *dev)
++{
++ return ip_route_input_cached(skb, daddr, saddr, tos, dev, 0);
++}
++
++int ip_route_input_lookup(struct sk_buff *skb, u32 daddr, u32 saddr,
++ u8 tos, struct net_device *dev, u32 lsrc)
++{
++ return ip_route_input_cached(skb, daddr, saddr, tos, dev, lsrc);
+ }
+
+ static inline int __mkroute_output(struct rtable **result,
+@@ -2067,6 +2102,7 @@
+ rth->fl.fl4_tos = tos;
+ rth->fl.fl4_src = oldflp->fl4_src;
+ rth->fl.oif = oldflp->oif;
++ rth->fl.fl4_gw = oldflp->fl4_gw;
+ rth->fl.mark = oldflp->mark;
+ rth->rt_dst = fl->fl4_dst;
+ rth->rt_src = fl->fl4_src;
+@@ -2145,6 +2181,7 @@
+ struct flowi fl = { .nl_u = { .ip4_u =
+ { .daddr = oldflp->fl4_dst,
+ .saddr = oldflp->fl4_src,
++ .gw = oldflp->fl4_gw,
+ .tos = tos & IPTOS_RT_MASK,
+ .scope = ((tos & RTO_ONLINK) ?
+ RT_SCOPE_LINK :
+@@ -2248,6 +2285,7 @@
+ dev_out = &loopback_dev;
+ dev_hold(dev_out);
+ fl.oif = loopback_dev.ifindex;
++ fl.fl4_gw = 0;
+ res.type = RTN_LOCAL;
+ flags |= RTCF_LOCAL;
+ goto make_route;
+@@ -2255,7 +2293,7 @@
+
+ if (fib_lookup(&fl, &res)) {
+ res.fi = NULL;
+- if (oldflp->oif) {
++ if (oldflp->oif && dev_out->flags & IFF_UP) {
+ /* Apparently, routing tables are wrong. Assume,
+ that the destination is on link.
+
+@@ -2295,6 +2333,7 @@
+ dev_out = &loopback_dev;
+ dev_hold(dev_out);
+ fl.oif = dev_out->ifindex;
++ fl.fl4_gw = 0;
+ if (res.fi)
+ fib_info_put(res.fi);
+ res.fi = NULL;
+@@ -2302,13 +2341,12 @@
+ goto make_route;
+ }
+
++ if (res.type == RTN_UNICAST)
++ fib_select_default(&fl, &res);
+ #ifdef CONFIG_IP_ROUTE_MULTIPATH
+- if (res.fi->fib_nhs > 1 && fl.oif == 0)
++ if (res.fi->fib_nhs > 1)
+ fib_select_multipath(&fl, &res);
+- else
+ #endif
+- if (!res.prefixlen && res.type == RTN_UNICAST && !fl.oif)
+- fib_select_default(&fl, &res);
+
+ if (!fl.fl4_src)
+ fl.fl4_src = FIB_RES_PREFSRC(res);
+@@ -2345,6 +2383,7 @@
+ rth->fl.fl4_src == flp->fl4_src &&
+ rth->fl.iif == 0 &&
+ rth->fl.oif == flp->oif &&
++ rth->fl.fl4_gw == flp->fl4_gw &&
+ rth->fl.mark == flp->mark &&
+ !((rth->fl.fl4_tos ^ flp->fl4_tos) &
+ (IPTOS_RT_MASK | RTO_ONLINK))) {
+@@ -3034,3 +3073,4 @@
+ EXPORT_SYMBOL(__ip_select_ident);
+ EXPORT_SYMBOL(ip_route_input);
+ EXPORT_SYMBOL(ip_route_output_key);
++EXPORT_SYMBOL(ip_route_input_lookup);
--- /dev/null
+Index: linux-2.6.23-rc6/arch/mips/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/arch/mips/Makefile 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/arch/mips/Makefile 2007-09-21 16:24:05.000000000 +0800
+@@ -565,6 +565,9 @@
+ cflags-$(CONFIG_TOSHIBA_RBTX4938) += -Iinclude/asm-mips/mach-tx49xx
+ load-$(CONFIG_TOSHIBA_RBTX4938) += 0xffffffff80100000
+
++# temporary until string.h is fixed
++cflags-y += -ffreestanding
++
+ cflags-y += -Iinclude/asm-mips/mach-generic
+ drivers-$(CONFIG_PCI) += arch/mips/pci/
+
--- /dev/null
+Index: linux-2.6.23-rc6/fs/jffs2/build.c
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/jffs2/build.c 2007-09-21 16:23:53.000000000 +0800
++++ linux-2.6.23-rc6/fs/jffs2/build.c 2007-09-21 16:24:05.000000000 +0800
+@@ -105,6 +105,17 @@
+ dbg_fsbuild("scanned flash completely\n");
+ jffs2_dbg_dump_block_lists_nolock(c);
+
++ if (c->flags & (1 << 7)) {
++ printk("%s(): unlocking the mtd device... ", __func__);
++ if (c->mtd->unlock)
++ c->mtd->unlock(c->mtd, 0, c->mtd->size);
++ printk("done.\n");
++
++ printk("%s(): erasing all blocks after the end marker... ", __func__);
++ jffs2_erase_pending_blocks(c, -1);
++ printk("done.\n");
++ }
++
+ dbg_fsbuild("pass 1 starting\n");
+ c->flags |= JFFS2_SB_FLAG_BUILDING;
+ /* Now scan the directory tree, increasing nlink according to every dirent found. */
+Index: linux-2.6.23-rc6/fs/jffs2/scan.c
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/jffs2/scan.c 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/fs/jffs2/scan.c 2007-09-21 16:24:05.000000000 +0800
+@@ -142,9 +142,12 @@
+
+ /* reset summary info for next eraseblock scan */
+ jffs2_sum_reset_collected(s);
+-
+- ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
+- buf_size, s);
++
++ if (c->flags & (1 << 7))
++ ret = BLK_STATE_ALLFF;
++ else
++ ret = jffs2_scan_eraseblock(c, jeb, buf_size?flashbuf:(flashbuf+jeb->offset),
++ buf_size, s);
+
+ if (ret < 0)
+ goto out;
+@@ -545,6 +548,17 @@
+ return err;
+ }
+
++ if ((buf[0] == 0xde) &&
++ (buf[1] == 0xad) &&
++ (buf[2] == 0xc0) &&
++ (buf[3] == 0xde)) {
++ /* end of filesystem. erase everything after this point */
++ printk("%s(): End of filesystem marker found at 0x%x\n", __func__, jeb->offset);
++ c->flags |= (1 << 7);
++
++ return BLK_STATE_ALLFF;
++ }
++
+ /* We temporarily use 'ofs' as a pointer into the buffer/jeb */
+ ofs = 0;
+
--- /dev/null
+Index: linux-2.6.23-rc6/include/asm-powerpc/segment.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/include/asm-powerpc/segment.h 2007-09-21 16:24:05.000000000 +0800
+@@ -0,0 +1,6 @@
++#ifndef _ASM_SEGMENT_H
++#define _ASM_SEGMENT_H
++
++/* Only here because we have some old header files that expect it.. */
++
++#endif /* _ASM_SEGMENT_H */
--- /dev/null
+Index: linux-2.6.23-rc9/drivers/net/r8169.c
+===================================================================
+--- linux-2.6.23-rc9.orig/drivers/net/r8169.c 2007-10-02 12:50:51.000000000 +0800
++++ linux-2.6.23-rc9/drivers/net/r8169.c 2007-10-03 23:39:30.000000000 +0800
+@@ -1459,7 +1459,7 @@
+ .hw_start = rtl_hw_start_8169,
+ .region = 1,
+ .align = 0,
+- .intr_event = SYSErr | LinkChg | RxOverflow |
++ .intr_event = LinkChg | RxOverflow |
+ RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
+ .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow
+ },
+@@ -1467,7 +1467,7 @@
+ .hw_start = rtl_hw_start_8168,
+ .region = 2,
+ .align = 8,
+- .intr_event = SYSErr | LinkChg | RxOverflow |
++ .intr_event = LinkChg | RxOverflow |
+ TxErr | TxOK | RxOK | RxErr,
+ .napi_event = TxErr | TxOK | RxOK | RxOverflow
+ },
+@@ -1475,7 +1475,7 @@
+ .hw_start = rtl_hw_start_8101,
+ .region = 2,
+ .align = 8,
+- .intr_event = SYSErr | LinkChg | RxOverflow | PCSTimeout |
++ .intr_event = LinkChg | RxOverflow | PCSTimeout |
+ RxFIFOOver | TxErr | TxOK | RxOK | RxErr,
+ .napi_event = RxFIFOOver | TxErr | TxOK | RxOK | RxOverflow
+ }
+@@ -2769,10 +2769,12 @@
+ break;
+ }
+
++#if 0
+ if (unlikely(status & SYSErr)) {
+ rtl8169_pcierr_interrupt(dev);
+ break;
+ }
++#endif
+
+ if (status & LinkChg)
+ rtl8169_check_link_status(dev, tp, ioaddr);
--- /dev/null
+Index: linux-2.6.23-rc6/fs/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/Kconfig 2007-09-21 16:23:55.000000000 +0800
++++ linux-2.6.23-rc6/fs/Kconfig 2007-09-21 16:24:06.000000000 +0800
+@@ -461,6 +461,9 @@
+ This option will enlarge your kernel, but it allows debugging of
+ ocfs2 filesystem issues.
+
++config MINI_FO
++ tristate "Mini fanout overlay filesystem"
++
+ config MINIX_FS
+ tristate "Minix fs support"
+ help
+Index: linux-2.6.23-rc6/fs/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/Makefile 2007-09-21 16:23:55.000000000 +0800
++++ linux-2.6.23-rc6/fs/Makefile 2007-09-21 16:24:06.000000000 +0800
+@@ -76,6 +76,7 @@
+ obj-$(CONFIG_RAMFS) += ramfs/
+ obj-$(CONFIG_HUGETLBFS) += hugetlbfs/
+ obj-$(CONFIG_CODA_FS) += coda/
++obj-$(CONFIG_MINI_FO) += mini_fo/
+ obj-$(CONFIG_MINIX_FS) += minix/
+ obj-$(CONFIG_FAT_FS) += fat/
+ obj-$(CONFIG_MSDOS_FS) += msdos/
+Index: linux-2.6.23-rc6/fs/mini_fo/aux.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/aux.c 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,577 @@
++/*
++ * Copyright (c) 1997-2003 Erez Zadok
++ * Copyright (c) 2001-2003 Stony Brook University
++ *
++ * For specific licensing information, see the COPYING file distributed with
++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING.
++ *
++ * This Copyright notice must be kept intact and distributed with all
++ * fistgen sources INCLUDING sources generated by fistgen.
++ */
++/*
++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++/*
++ * $Id$
++ */
++
++#ifdef HAVE_CONFIG_H
++# include <config.h>
++#endif
++
++#include "fist.h"
++#include "mini_fo.h"
++
++/* check if file exists in storage */
++int exists_in_storage(dentry_t *dentry)
++{
++ check_mini_fo_dentry(dentry);
++ if(dtost(dentry) == MODIFIED || dtost(dentry) == CREATED || dtost(dentry) == DEL_REWRITTEN)
++ return 1;
++ return 0;
++}
++
++/* check if dentry is in an existing state */
++int is_mini_fo_existant(dentry_t *dentry)
++{
++ check_mini_fo_dentry(dentry);
++
++ if(dtost(dentry) == DELETED || dtost(dentry) == NON_EXISTANT)
++ return 0;
++ else
++ return 1;
++}
++
++/*
++ * This function will create a negative storage dentry for
++ * dentry, what is required for many create like options.
++ * It will create the storage structure if necessary.
++ */
++int get_neg_sto_dentry(dentry_t *dentry)
++{
++ int err = 0;
++ unsigned int len;
++ const unsigned char *name;
++
++ if(!dentry ||
++ !dtopd(dentry) ||
++ !(dtost(dentry) == UNMODIFIED ||
++ dtost(dentry) == NON_EXISTANT ||
++ dtost(dentry) == DELETED)) {
++ printk(KERN_CRIT "mini_fo: get_neg_sto_dentry: invalid dentry passed.\n");
++ err = -1;
++ goto out;
++ }
++ /* Have we got a neg. dentry already? */
++ if(dtohd2(dentry)) {
++ err = 0;
++ goto out;
++ }
++ if(dtost(dentry->d_parent) == UNMODIFIED) {
++ /* build sto struct */
++ err = build_sto_structure(dentry->d_parent->d_parent, dentry->d_parent);
++ if(err ||
++ dtost(dentry->d_parent) != MODIFIED) {
++ printk(KERN_CRIT "mini_fo: get_neg_sto_dentry: ERROR building sto structure.\n");
++ err = -1;
++ goto out;
++ }
++ }
++
++ len = dentry->d_name.len;
++ name = dentry->d_name.name;
++
++ dtohd2(dentry) =
++ lookup_one_len(name, dtohd2(dentry->d_parent), len);
++
++ out:
++ return err;
++}
++
++int check_mini_fo_dentry(dentry_t *dentry)
++{
++ ASSERT(dentry != NULL);
++ ASSERT(dtopd(dentry) != NULL);
++ ASSERT((dtohd(dentry) != NULL) || (dtohd2(dentry) != NULL));
++
++/* if(dtost(dentry) == MODIFIED) { */
++/* ASSERT(dentry->d_inode != NULL); */
++/* ASSERT(dtohd(dentry) != NULL); */
++/* ASSERT(dtohd(dentry)->d_inode != NULL); */
++/* ASSERT(dtohd2(dentry) != NULL); */
++/* ASSERT(dtohd2(dentry)->d_inode != NULL); */
++/* } */
++/* else if(dtost(dentry) == UNMODIFIED) { */
++/* ASSERT(dentry->d_inode != NULL); */
++/* ASSERT( */
++/* } */
++ return 0;
++}
++
++int check_mini_fo_file(file_t *file)
++{
++ ASSERT(file != NULL);
++ ASSERT(ftopd(file) != NULL);
++ ASSERT(file->f_dentry != NULL);
++
++ /* violent checking, check depending of state and type
++ * if(S_ISDIR(file->f_dentry->d_inode->i_mode)) {}
++ */
++ ASSERT((ftohf(file) != NULL) || (ftohf2(file) != NULL));
++ return 0;
++}
++
++int check_mini_fo_inode(inode_t *inode)
++{
++ ASSERT(inode != NULL);
++ ASSERT(itopd(inode) != NULL);
++ ASSERT((itohi(inode) != NULL) || (itohi2(inode) != NULL));
++ return 0;
++}
++
++/*
++ * will walk a base path as provided by get_mini_fo_bpath and return
++ * the (hopefully ;-) ) positive dentry of the renamed base dir.
++ *
++ * This does some work of path_init.
++ */
++dentry_t *bpath_walk(super_block_t *sb, char *bpath)
++{
++ int err;
++ struct vfsmount *mnt;
++ struct nameidata nd;
++
++ /* be paranoid */
++ if(!bpath || bpath[0] != '/') {
++ printk(KERN_CRIT "mini_fo: bpath_walk: Invalid string.\n");
++ return NULL;
++ }
++ if(!sb || !stopd(sb)) {
++ printk(KERN_CRIT "mini_fo: bpath_walk: Invalid sb.\n");
++ return NULL;
++ }
++
++ /* fix this: how do I reach this lock?
++ * read_lock(¤t->fs->lock); */
++ mnt = mntget(stopd(sb)->hidden_mnt);
++ /* read_unlock(¤t->fs->lock); */
++
++ err = vfs_path_lookup(mnt->mnt_root, mnt, bpath+1, 0, &nd);
++
++ /* validate */
++ if (err || !nd.dentry || !nd.dentry->d_inode) {
++ printk(KERN_CRIT "mini_fo: bpath_walk: path_walk failed.\n");
++ return NULL;
++ }
++ return nd.dentry;
++}
++
++
++/* returns the full path of the basefile incl. its name */
++int get_mini_fo_bpath(dentry_t *dentry, char **bpath, int *bpath_len)
++{
++ char *buf_walker;
++ int len = 0;
++ dentry_t *sky_walker;
++
++ if(!dentry || !dtohd(dentry)) {
++ printk(KERN_CRIT "mini_fo: get_mini_fo_bpath: invalid dentry passed.\n");
++ return -1;
++ }
++ sky_walker = dtohd(dentry);
++
++ do {
++ len += sky_walker->d_name.len + 1 ; /* 1 for '/' */
++ sky_walker = sky_walker->d_parent;
++ } while(sky_walker != stopd(dentry->d_inode->i_sb)->base_dir_dentry);
++
++ /* 1 to oil the loop */
++ *bpath = (char*) kmalloc(len + 1, GFP_KERNEL);
++ if(!*bpath) {
++ printk(KERN_CRIT "mini_fo: get_mini_fo_bpath: out of mem.\n");
++ return -1;
++ }
++ buf_walker = *bpath+len; /* put it on last char */
++ *buf_walker = '\n';
++ sky_walker = dtohd(dentry);
++
++ do {
++ buf_walker -= sky_walker->d_name.len;
++ strncpy(buf_walker,
++ sky_walker->d_name.name,
++ sky_walker->d_name.len);
++ *(--buf_walker) = '/';
++ sky_walker = sky_walker->d_parent;
++ } while(sky_walker != stopd(dentry->d_inode->i_sb)->base_dir_dentry);
++
++ /* bpath_len doesn't count newline! */
++ *bpath_len = len;
++ return 0;
++}
++
++int mini_fo_cp_cont(dentry_t *tgt_dentry, struct vfsmount *tgt_mnt,
++ dentry_t *src_dentry, struct vfsmount *src_mnt)
++{
++ void *buf;
++ mm_segment_t old_fs;
++ file_t *tgt_file;
++ file_t *src_file;
++ int bytes, len, tmp, err;
++ err = 0;
++
++ if(!(tgt_dentry->d_inode && src_dentry->d_inode)) {
++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR, neg. dentry passed.\n");
++ err = -EINVAL;
++ goto out;
++ }
++
++ dget(tgt_dentry);
++ dget(src_dentry);
++ mntget(tgt_mnt);
++ mntget(src_mnt);
++
++ /* open file write only */
++ tgt_file = dentry_open(tgt_dentry, tgt_mnt, 0x1);
++ if(!tgt_file || IS_ERR(tgt_file)) {
++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR opening target file.\n");
++ err = PTR_ERR(tgt_file);
++ goto out_err;
++ }
++
++ /* open file read only */
++ src_file = dentry_open(src_dentry, src_mnt, 0x0);
++ if(!src_file || IS_ERR(src_file)) {
++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR opening source file.\n");
++ err = PTR_ERR(src_file);
++
++ /* close target file */
++ fput(tgt_file);
++ goto out_err;
++ }
++
++ /* check if the filesystem(s) support read respective write */
++ if(!src_file->f_op->read || !tgt_file->f_op->write) {
++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR, no fs read or write support.\n");
++ err = -EPERM;
++ goto out_close;
++ }
++
++ /* allocate a page for transfering the data */
++ buf = (void *) __get_free_page(GFP_KERNEL);
++ if(!buf) {
++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR, out of kernel mem.\n");
++ goto out_err;
++ }
++
++ tgt_file->f_pos = 0;
++ src_file->f_pos = 0;
++
++ old_fs = get_fs();
++ set_fs(KERNEL_DS);
++
++ /* Doing this I assume that a read operation will return a full
++ * buffer while there is still data to read, and a less than
++ * full buffer when all data has been read.
++ */
++ bytes = len = PAGE_SIZE;
++ while(bytes == len) {
++ bytes = src_file->f_op->read(src_file, buf, len,
++ &src_file->f_pos);
++ tmp = tgt_file->f_op->write(tgt_file, buf, bytes,
++ &tgt_file->f_pos);
++ if(tmp != bytes) {
++ printk(KERN_CRIT "mini_fo_cp_cont: ERROR writing.\n");
++ goto out_close_unset;
++ }
++ }
++
++ free_page((unsigned long) buf);
++ set_fs(old_fs);
++ fput(tgt_file);
++ fput(src_file);
++ goto out;
++
++ out_close_unset:
++ free_page((unsigned long) buf);
++ set_fs(old_fs);
++
++ out_close:
++ fput(tgt_file);
++ fput(src_file);
++
++ out_err:
++ dput(tgt_dentry);
++ dput(src_dentry);
++
++ /* mk: not sure if this need to be done */
++ mntput(tgt_mnt);
++ mntput(src_mnt);
++
++ out:
++ return err;
++}
++
++/* mk:
++ * ndl (no-duplicate list) stuff
++ * This is used in mini_fo_readdir, to save the storage directory contents
++ * and later when reading base, match them against the list in order
++ * to avoid duplicates.
++ */
++
++/* add a file specified by name and len to the ndl
++ * Return values: 0 on success, <0 on failure.
++ */
++int ndl_add_entry(struct readdir_data *rd, const char *name, int len)
++{
++ struct ndl_entry *tmp_entry;
++
++ tmp_entry = (struct ndl_entry *)
++ kmalloc(sizeof(struct ndl_entry), GFP_KERNEL);
++ if(!tmp_entry) {
++ printk(KERN_CRIT "mini_fo: ndl_add_entry: out of mem.\n");
++ return -ENOMEM;
++ }
++ tmp_entry->name = (char*) kmalloc(len, GFP_KERNEL);
++ if(!tmp_entry->name) {
++ printk(KERN_CRIT "mini_fo: ndl_add_entry: out of mem.\n");
++ return -ENOMEM;
++ }
++ strncpy(tmp_entry->name, name, len);
++ tmp_entry->len = len;
++
++ list_add(&tmp_entry->list, &rd->ndl_list);
++ rd->ndl_size++;
++ return 0;
++}
++
++/* delete all list entries and free memory */
++void ndl_put_list(struct readdir_data *rd)
++{
++ struct list_head *tmp;
++ struct ndl_entry *tmp_entry;
++
++ if(rd->ndl_size <= 0)
++ return;
++ while(!list_empty(&rd->ndl_list)) {
++ tmp = rd->ndl_list.next;
++ list_del(tmp);
++ tmp_entry = list_entry(tmp, struct ndl_entry, list);
++ kfree(tmp_entry->name);
++ kfree(tmp_entry);
++ }
++ rd->ndl_size = 0;
++}
++
++/* Check if a file specified by name and len is in the ndl
++ * Return value: 0 if not in list, 1 if file is found in ndl.
++ */
++int ndl_check_entry(struct readdir_data *rd, const char *name, int len)
++{
++ struct list_head *tmp;
++ struct ndl_entry *tmp_entry;
++
++ if(rd->ndl_size <= 0)
++ return 0;
++
++ list_for_each(tmp, &rd->ndl_list) {
++ tmp_entry = list_entry(tmp, struct ndl_entry, list);
++ if(tmp_entry->len != len)
++ continue;
++ if(!strncmp(tmp_entry->name, name, len))
++ return 1;
++ }
++ return 0;
++}
++
++/* mk:
++ * Recursive function to create corresponding directorys in the storage fs.
++ * The function will build the storage directorys up to dentry.
++ */
++int build_sto_structure(dentry_t *dir, dentry_t *dentry)
++{
++ int err;
++ dentry_t *hidden_sto_dentry;
++ dentry_t *hidden_sto_dir_dentry;
++
++ if(dentry->d_parent != dir) {
++ printk(KERN_CRIT "mini_fo: build_sto_structure: invalid parameter or meta data corruption [1].\n");
++ return 1;
++ }
++
++ if(dtost(dir) != MODIFIED) {
++ err = build_sto_structure(dir->d_parent, dentry->d_parent);
++ if(err)
++ return err;
++ }
++
++ /* ok, coming back again. */
++ check_mini_fo_dentry(dentry);
++ hidden_sto_dentry = dtohd2(dentry);
++
++ if(!hidden_sto_dentry) {
++ /*
++ * This is the case after creating the first
++ * hidden_sto_dentry.
++ * After one negative storage_dentry, all pointers to
++ * hidden_storage dentries are set to NULL. We need to
++ * create the negative dentry before we create the storage
++ * file.
++ */
++ unsigned int len;
++ const unsigned char *name;
++ len = dtohd(dentry)->d_name.len;
++ name = dtohd(dentry)->d_name.name;
++ hidden_sto_dentry = lookup_one_len(name, dtohd2(dir), len);
++ dtohd2(dentry) = hidden_sto_dentry;
++ }
++
++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ /* lets be safe */
++ if(dtohd2(dir) != hidden_sto_dir_dentry) {
++ printk(KERN_CRIT "mini_fo: build_sto_structure: invalid parameter or meta data corruption [2].\n");
++ return 1;
++ }
++
++ /* check for errors in lock_parent */
++ err = PTR_ERR(hidden_sto_dir_dentry);
++ if(IS_ERR(hidden_sto_dir_dentry)) {
++ printk(KERN_CRIT "mini_fo: build_sto_structure: lock_parent failed.\n");
++ return err;
++ }
++
++ err = vfs_mkdir(hidden_sto_dir_dentry->d_inode,
++ hidden_sto_dentry,
++ dir->d_inode->i_mode);
++
++ if(err) {
++ printk(KERN_CRIT "mini_fo: build_sto_structure: failed to create storage dir [1].\n");
++ /* was: unlock_dir(dir); */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&dir->d_inode->i_mutex);
++#else
++ up(&dir->d_inode->i_sem);
++#endif
++ dput(dir);
++ return err;
++ }
++
++ /* everything ok! */
++ if(!dtohd2(dentry)->d_inode) {
++ printk(KERN_CRIT "mini_fo: build_sto_structure: failed to create storage dir [2].\n");
++ /* was: unlock_dir(dir); */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&dir->d_inode->i_mutex);
++#else
++ up(&dir->d_inode->i_sem);
++#endif
++ dput(dir);
++ return 1;
++ }
++
++ /* interpose the new inode and set new state */
++ itohi2(dentry->d_inode) = igrab(dtohd2(dentry)->d_inode);
++ dtopd(dentry)->state = MODIFIED;
++
++ /* initalize the wol list */
++ itopd(dentry->d_inode)->deleted_list_size = -1;
++ itopd(dentry->d_inode)->renamed_list_size = -1;
++ meta_build_lists(dentry);
++
++ fist_copy_attr_all(dentry->d_inode, itohi2(dentry->d_inode));
++ fist_copy_attr_timesizes(dir->d_inode,
++ hidden_sto_dir_dentry->d_inode);
++ dir->d_inode->i_nlink++;
++ /* was: unlock_dir(hidden_sto_dir_dentry); */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++ return 0;
++}
++
++
++#if 0 /* unused */
++
++/*
++ * Read "len" bytes from "filename" into "buf".
++ * "buf" is in kernel space.
++ */
++int
++mini_fo_read_file(const char *filename, void *buf, int len)
++{
++ file_t *filp;
++ mm_segment_t oldfs;
++ int bytes;
++ /* Chroot? Maybe NULL isn't right here */
++ filp = filp_open(filename, O_RDONLY, 0);
++ if (!filp || IS_ERR(filp)) {
++ printk("mini_fo_read_file err %d\n", (int) PTR_ERR(filp));
++ return -1; /* or do something else */
++ }
++
++ if (!filp->f_op->read)
++ return -2; /* file(system) doesn't allow reads */
++
++ /* now read len bytes from offset 0 */
++ filp->f_pos = 0; /* start offset */
++ oldfs = get_fs();
++ set_fs(KERNEL_DS);
++ bytes = filp->f_op->read(filp, buf, len, &filp->f_pos);
++ set_fs(oldfs);
++
++ /* close the file */
++ fput(filp);
++
++ return bytes;
++}
++
++
++
++/*
++ * Write "len" bytes from "buf" to "filename"
++ * "buf" is in kernel space.
++ */
++int
++mini_fo_write_file(const char *filename, void *buf, int len)
++{
++ file_t *filp;
++ mm_segment_t oldfs;
++ int bytes;
++ /* Chroot? Maybe NULL isn't right here */
++ filp = filp_open(filename, O_RDWR|O_CREAT, 0640);
++ if (!filp || IS_ERR(filp)) {
++ printk("mini_fo_write_file err %d\n", (int) PTR_ERR(filp));
++ return -1; /* or do something else */
++ }
++
++ if (!filp->f_op->write)
++ return -2; /* file(system) doesn't allow writes */
++
++ /* now write len bytes from offset 0 */
++ filp->f_pos = 0; /* start offset */
++ oldfs = get_fs();
++ set_fs(KERNEL_DS);
++ bytes = filp->f_op->write(filp, buf, len, &filp->f_pos);
++ set_fs(oldfs);
++
++ /* close the file */
++ fput(filp);
++
++ return bytes;
++}
++
++#endif /* unused */
++
+Index: linux-2.6.23-rc6/fs/mini_fo/ChangeLog
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/ChangeLog 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,281 @@
++2006-01-24 Markus Klotzbuecher <mk@mary.denx.de>
++
++ * Add tons of ugly ifdefs to Ed L. Cashin's mutex patch to
++ retain backwards compatibility.
++
++2006-01-24 Ed L. Cashin <ecashin@coraid.com>
++
++ * Support for the new mutex infrastructure
++ (7892f2f48d165a34b0b8130c8a195dfd807b8cb6)
++
++2005-10-15 Markus Klotzbuecher <mk@localhost.localdomain>
++
++ * Bugfix for a serious memory leak in mini_fo_follow_link.
++
++2005-09-21 Markus Klotzbuecher <mk@mary>
++
++ * new release 0.6.1
++
++ * fix of a compiler warning due to changes in 2.6.13
++
++2005-09-21 Klaus Wenninger <klaus.wenninger@siemens.com>
++
++ * file.c: readdir: fix for a bug that caused directory entries
++ to show up twice when using storage filesystems such as
++ minixfs or pramfs.
++
++2005-06-30 Eric Lammerts <eric@lammerts.org>
++
++ * fix for an oops when overwriting a binary thats beeing
++ executed.
++
++2005-06-09 <mk@mary>
++
++ * Renamed overlay to mini_fo-overlay.
++
++ * Added mini_fo-merge script to allow merging of storage and base
++ after making modifications.
++
++2005-05-22 root <mk@mary>
++
++ * Added overlay script that allows to easily mount mini_fo ontop
++ of a given base directory
++
++2005-05-10 <mk@mary>
++
++ * inode.c: xattr functions return -EOPNOSUPP instead of
++ -ENOSUPP, what confuses "ls -l"
++
++ * Changed license from LGPL to GPL.
++
++2005-05-08 root <mk@mary>
++
++ * Makefile: clean it up and added make install and make
++ uninstall.
++
++2005-05-06 <mk@mary>
++
++ * merged devel branch back to main. [v0-6-0-pre3]
++
++ * removed unused files print.c and fist_ioctl. [devel-0-0-18]
++
++ * ioctl: removed fist_ioctl stuff, that is not needed for
++ now.
++
++2005-05-03 <mk@mary>
++
++ * file.c: simplified mini_fo_open and mini_fo_setattr using
++ new state changing functions. [devel-0-0-17]
++
++ * inode.c: Fixed getattr state bug (see below) in 2.4 function
++ mini_fo_inode revalidate.
++
++ * inode.c: found an other bug in mini_fo_getattr. States are not
++ reliable in this function, as a file can be opened, unlinked and
++ the getattr function called. This results in a deleted dentry
++ with an inode. Fix is to ignore states and simply use the inode
++ available.
++
++2005-04-29 <mk@mary>
++
++ * file.c: Bugfix and cleanup in fasync and fsync. [devel-0-0-16]
++
++ * file.c: do not use mini_fo_lock so the generic version is
++ used (I guess).
++
++ * inode.c: getattr, never call getattr on lower files, as this
++ will cause the inum to change.
++
++ * inode.c: rename_reg_file renamed to rename_nondir, as it
++ doesn't matter as long it't not a dir. Removed all
++ rename_dev_file etc.
++
++ * tagged as devel-0-0-15
++
++ * inode.c: added support for chosing support for extended
++ attrs at compile time by XATTR define in mini_fo.h .
++
++ * inode.c: fixed mini_fo_getattr to use mini_fo inode and not
++ lower again, what avoids inode number changes that confused
++ rm again. This is the proper solution.
++
++2005-04-24 <mk@mary>
++
++ * all files: updated Copyright notive to 2005. [devel-0-0-14]
++
++ * inode.c: fixed mini_fo_getattr to not change the inode
++ number, even if lower files change.
++
++ * super.c: fixed a bug that caused deleted base file to show
++ up suddenly after some time, or after creating a special
++ file. The problem was that after some time or after special
++ file creating sync_sb_inodes is called by the vfs, that
++ called our mini_fo_put_inode. There was (wrongly) called
++ __meta_put_lists, that nuked the lists, although the inode
++ was going to continue its life. Moving __meta_put_lists to
++ mini_fo_clear_inode, where an inode is really destroyed,
++ solved the problem.
++
++
++2005-04-23 <mk@mary>
++
++ * state.c, aux.c: more cleaning up and
++ simplifications. [devel-0-0-13]
++
++ * inode.c: implemented mini_fo_getattr, that was required for
++ 2.6 because inode_revalidate has been remove there, and the
++ old "du" bug returned.
++
++
++2005-04-20 <mk@mary>
++
++ * aux.c: get_neg_sto_dentry(): allow to be called for dentries
++ in state UNMODIFIED, NON_EXISTANT _and_ DELETED.
++
++2005-04-19 <mk@mary>
++
++ * Fixed a bug under 2.6 that caused files deleted via mini_fo
++ not to be deleted properly and therefore the fs filled up
++ untill no memory was left. [devel-0-0-12]
++
++ * Added basic hard link support. This means that creating
++ hardlinks will work, but existing ones will be treated as
++ individual files. [devel-0-0-11]
++
++2005-04-17 <mk@mary>
++
++ * Bugfixes
++
++2005-04-13 root <mk@mary>
++
++ * Added file state.c for the state transition
++ functions. Doesn't work very well yet, though...
++
++2005-04-12 <mk@mary>
++
++ * Porting to 2.6 started, which is easier than expected, also
++ due to Olivier previous work.
++
++2005-04-08 <mk@mary>
++
++ * Fixed the bug that caused du to return invalid sizes of
++ directory trees. The problem was that
++ mini_fo_inode_revalidate didn't always copy the attributes
++ from the base inode properly.
++
++2005-04-01 Markus Klotzbuecher <mk@chasey>
++
++ * Merged devel branch back to main trunk and updated the
++ RELEASE notes. This will be 0-6-0-pre1.
++
++2005-03-31 Markus Klotzbuecher <mk@chasey>
++
++ * Fixed some bugs in rename_reg_file, that only showed up in
++ the kernel compile test. Kernel compiles cleanly ontop of
++ mini_fo, now also make mrproper etc. work. Seems pretty stable.
++
++2005-03-28 Markus Klotzbuecher <mk@chasey>
++
++ * Many, many directory renaming bugfixes and a lot of other
++ cleanup. Dir renaming seems to work relatively stable.
++
++2005-03-22 Markus Klotzbuecher <mk@chasey>
++
++ * Finished implementing lightweight directory renaming. Some
++ basic testing indicates it works fine.
++ Next is to implement testcases for the testsuite and confirm
++ everything is really working ok.
++
++2005-03-18 Markus Klotzbuecher <mk@chasey>
++
++ * Finished implementing meta.c stuff required for directory
++ renaming.
++
++2005-03-17 Markus Klotzbuecher <mk@chasey>
++
++ * Fixed all compile warnings + an extremly old bug that
++ somehow crept in while reworking the wol stuff to the META
++ system. Turning on -Werror again... :-)
++
++ * Fixed some bugs in the new rename_reg_file function.
++
++ * Rewrote mini_fo rename and split it into several
++ subfunctions, that handle the different types
++ seperately. Rewrote the regular file function aswell, as it
++ was implemented somewhat inefficient.
++
++2005-03-16 Markus Klotzbuecher <mk@chasey>
++
++ * Implemented new META subsystem, removed old WOL stuff in favor
++ if it.
++
++ * After some basic testing everything seems ok...
++
++2005-03-11 Markus Klotzbuecher <mk@chasey>
++
++ * Renaming a non regular file caused trouble because I always
++ tried to copy the contents. Now I only do this for regular
++ files. mini_fo_rename still isn't implemented properly, renaming
++ of device files, symlinks etc. results in a empty regular file
++ instead of the proper type.
++
++ * Directory renaming suddenly works! What a surprise! I guess
++ this is because renaming is implemented as making a copy and
++ removing the original. Still this might not work
++ everywhere...
++
++2005-03-09 Markus Klotzbuecher <mk@chasey>
++
++ * Bugfix, when a mini_fo directory that exists in storage
++ (state: MODIFIED, CREATED and DEL_REWRITTEN) is deleted, a
++ possibly existing WOL file contained in it needs to be
++ deleted too.
++
++ * Starting cleanup: defined state names in order to get rid of
++ the state numbers.
++
++2005-03-08 Markus Klotzbuecher <mk@chasey>
++
++ * Makefile fix, fist_ioctl was built against wrong sources if ARCH=um
++
++ * Fixed a bug in dentry.c, mini_fo_d_hash. In state 4 =
++ DEL_REWRITTEN the hash was calculated from the base dentry,
++ which was wrong and and caused assertions in
++ __mini_fo_hidden_dentry to fail.
++
++2005-02-21 <mk@mary>
++
++ * Implemented directory deleting (inode.c)
++
++ * main.c: made mini_fo_parse_options a little more robust.
++
++2004-12-22 <mk@mary>
++
++ * Makefile cleanup and uml stuff, removed unneccessary files
++
++ * Created a new and hopefully more informative README
++
++ * CHANGELOG: created a new CHANGELOG and added old entries reversely
++
++
++2004-10-24 Gleb Natapov <gleb@nbase.co.il>
++
++ * Fix: owner and group where not correctly copied from base to
++ storage.
++
++
++2004-10-05 Gleb Natapov <gleb@nbase.co.il>
++
++ * Implementation of fsync, fasync and lock mini_fo functions.
++
++
++2004-09-29 Bob Lee <bob@pantasys.com>
++
++ * Fix of a serious pointer bug
++
++
++2004-09-28 Gleb Natapov <gleb@nbase.co.il>
++
++ * Implementation of mini_fo_mknod and mini_fo_rename, support
++ for device files.
++
+Index: linux-2.6.23-rc6/fs/mini_fo/dentry.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/dentry.c 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,244 @@
++/*
++ * Copyright (c) 1997-2003 Erez Zadok
++ * Copyright (c) 2001-2003 Stony Brook University
++ *
++ * For specific licensing information, see the COPYING file distributed with
++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING.
++ *
++ * This Copyright notice must be kept intact and distributed with all
++ * fistgen sources INCLUDING sources generated by fistgen.
++ */
++/*
++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++/*
++ * $Id$
++ */
++
++#ifdef HAVE_CONFIG_H
++# include <config.h>
++#endif
++
++#include "fist.h"
++#include "mini_fo.h"
++
++/*
++ * THIS IS A BOOLEAN FUNCTION: returns 1 if valid, 0 otherwise.
++ */
++STATIC int
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++mini_fo_d_revalidate(dentry_t *dentry, struct nameidata *nd)
++#else
++mini_fo_d_revalidate(dentry_t *dentry, int flags)
++#endif
++{
++ int err1 = 1; /* valid = 1, invalid = 0 */
++ int err2 = 1;
++ dentry_t *hidden_dentry;
++ dentry_t *hidden_sto_dentry;
++
++
++ check_mini_fo_dentry(dentry);
++
++ hidden_dentry = dtohd(dentry);
++ hidden_sto_dentry = dtohd2(dentry);
++
++ if(hidden_dentry &&
++ hidden_dentry->d_op &&
++ hidden_dentry->d_op->d_revalidate) {
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ err1 = hidden_dentry->d_op->d_revalidate(hidden_dentry, nd);
++#else
++ err1 = hidden_dentry->d_op->d_revalidate(hidden_dentry, flags);
++#endif
++ }
++ if(hidden_sto_dentry &&
++ hidden_sto_dentry->d_op &&
++ hidden_sto_dentry->d_op->d_revalidate) {
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ err2 = hidden_sto_dentry->d_op->d_revalidate(hidden_sto_dentry,
++ nd);
++#else
++ err2 = hidden_sto_dentry->d_op->d_revalidate(hidden_sto_dentry,
++ flags);
++#endif
++ }
++
++ /* mk: if one of the lower level dentries are valid,
++ * the mini_fo dentry is too.
++ */
++ return (err1 || err2);
++}
++
++
++STATIC int
++mini_fo_d_hash(dentry_t *dentry, qstr_t *name)
++{
++ int err = 0;
++ dentry_t *hidden_dentry;
++ dentry_t *hidden_sto_dentry;
++
++ /* hidden_dentry = mini_fo_hidden_dentry(dentry);
++ * hidden_sto_dentry = mini_fo_hidden_sto_dentry(dentry); */
++
++ /* state 1, 3, 4, 5: build the hash for the storage dentry */
++ if((dtopd(dentry)->state == MODIFIED) ||
++ (dtopd(dentry)->state == CREATED) ||
++ (dtopd(dentry)->state == DEL_REWRITTEN) ||
++ (dtopd(dentry)->state == DELETED)) {
++ hidden_sto_dentry = dtohd2(dentry);
++ if(hidden_sto_dentry &&
++ hidden_sto_dentry->d_op &&
++ hidden_sto_dentry->d_op->d_hash) {
++ err = hidden_sto_dentry->d_op->d_hash(hidden_sto_dentry, name);
++ }
++ goto out;
++ }
++ /* state 2: build the hash for the base dentry */
++ if(dtopd(dentry)->state == UNMODIFIED) {
++ hidden_dentry = dtohd(dentry);
++ if(hidden_dentry &&
++ hidden_dentry->d_op &&
++ hidden_dentry->d_op->d_hash) {
++ err = hidden_dentry->d_op->d_hash(hidden_dentry, name);
++ }
++ goto out;
++ }
++ /* state 6: build hash for the dentry that exists */
++ if(dtopd(dentry)->state == NON_EXISTANT) {
++ hidden_sto_dentry = dtohd2(dentry);
++ if(hidden_sto_dentry &&
++ hidden_sto_dentry->d_op &&
++ hidden_sto_dentry->d_op->d_hash) {
++ err = hidden_sto_dentry->d_op->d_hash(hidden_sto_dentry, name);
++ goto out;
++ }
++ hidden_dentry = dtohd(dentry);
++ if(hidden_dentry &&
++ hidden_dentry->d_op &&
++ hidden_dentry->d_op->d_hash) {
++ err = hidden_dentry->d_op->d_hash(hidden_dentry, name);
++ goto out;
++ }
++ }
++
++ printk(KERN_CRIT "mini_fo: d_hash: invalid state detected.\n");
++
++ out:
++ return err;
++}
++
++
++STATIC int
++mini_fo_d_compare(dentry_t *dentry, qstr_t *a, qstr_t *b)
++{
++ int err;
++ dentry_t *hidden_dentry=NULL;
++
++ /* hidden_dentry = mini_fo_hidden_dentry(dentry); */
++ if(dtohd2(dentry))
++ hidden_dentry = dtohd2(dentry);
++ else if(dtohd(dentry))
++ hidden_dentry = dtohd(dentry);
++
++ if (hidden_dentry && hidden_dentry->d_op && hidden_dentry->d_op->d_compare) {
++ err = hidden_dentry->d_op->d_compare(hidden_dentry, a, b);
++ } else {
++ err = ((a->len != b->len) || memcmp(a->name, b->name, b->len));
++ }
++
++ return err;
++}
++
++
++int
++mini_fo_d_delete(dentry_t *dentry)
++{
++ dentry_t *hidden_dentry;
++ dentry_t *hidden_sto_dentry;
++ int err = 0;
++
++ /* this could be a negative dentry, so check first */
++ if (!dtopd(dentry)) {
++ printk(KERN_CRIT "mini_fo_d_delete: negative dentry passed.\n");
++ goto out;
++ }
++ hidden_dentry = dtohd(dentry);
++ hidden_sto_dentry = dtohd2(dentry);
++
++ if(hidden_dentry) {
++ if(hidden_dentry->d_op &&
++ hidden_dentry->d_op->d_delete) {
++ err = hidden_dentry->d_op->d_delete(hidden_dentry);
++ }
++ }
++ if(hidden_sto_dentry) {
++ if(hidden_sto_dentry->d_op &&
++ hidden_sto_dentry->d_op->d_delete) {
++ err = hidden_sto_dentry->d_op->d_delete(hidden_sto_dentry);
++ }
++ }
++
++ out:
++ return err;
++}
++
++
++void
++mini_fo_d_release(dentry_t *dentry)
++{
++ dentry_t *hidden_dentry;
++ dentry_t *hidden_sto_dentry;
++
++
++ /* this could be a negative dentry, so check first */
++ if (!dtopd(dentry)) {
++ printk(KERN_CRIT "mini_fo_d_release: no private data.\n");
++ goto out;
++ }
++ hidden_dentry = dtohd(dentry);
++ hidden_sto_dentry = dtohd2(dentry);
++
++ if(hidden_dentry) {
++ /* decrement hidden dentry's counter and free its inode */
++ dput(hidden_dentry);
++ }
++ if(hidden_sto_dentry) {
++ /* decrement hidden dentry's counter and free its inode */
++ dput(hidden_sto_dentry);
++ }
++
++ /* free private data (mini_fo_dentry_info) here */
++ kfree(dtopd(dentry));
++ __dtopd(dentry) = NULL; /* just to be safe */
++ out:
++ return;
++}
++
++
++/*
++ * we don't really need mini_fo_d_iput, because dentry_iput will call iput() if
++ * mini_fo_d_iput is not defined. We left this implemented for ease of
++ * tracing/debugging.
++ */
++void
++mini_fo_d_iput(dentry_t *dentry, inode_t *inode)
++{
++ iput(inode);
++}
++
++
++struct dentry_operations mini_fo_dops = {
++ d_revalidate: mini_fo_d_revalidate,
++ d_hash: mini_fo_d_hash,
++ d_compare: mini_fo_d_compare,
++ d_release: mini_fo_d_release,
++ d_delete: mini_fo_d_delete,
++ d_iput: mini_fo_d_iput,
++};
+Index: linux-2.6.23-rc6/fs/mini_fo/file.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/file.c 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,713 @@
++/*
++ * Copyright (c) 1997-2003 Erez Zadok
++ * Copyright (c) 2001-2003 Stony Brook University
++ *
++ * For specific licensing information, see the COPYING file distributed with
++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING.
++ *
++ * This Copyright notice must be kept intact and distributed with all
++ * fistgen sources INCLUDING sources generated by fistgen.
++ */
++/*
++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++/*
++ * $Id$
++ */
++
++#ifdef HAVE_CONFIG_H
++# include <config.h>
++#endif
++
++#include "fist.h"
++#include "mini_fo.h"
++#define ROUND_UP(x) (((x)+sizeof(long)-1) & ~(sizeof(long)-1))
++
++/*******************
++ * File Operations *
++ *******************/
++
++STATIC loff_t
++mini_fo_llseek(file_t *file, loff_t offset, int origin)
++{
++ loff_t err;
++ file_t *hidden_file = NULL;
++
++ if(S_ISDIR(file->f_dentry->d_inode->i_mode)) {
++ /* Check if trying to llseek from a directory */
++ err = -EISDIR;
++ goto out;
++ }
++ if (ftopd(file) != NULL) {
++ if(ftohf2(file)) {
++ hidden_file = ftohf2(file);
++ } else {
++ hidden_file = ftohf(file);
++ }
++ }
++
++ /* always set hidden position to this one */
++ hidden_file->f_pos = file->f_pos;
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ memcpy(&(hidden_file->f_ra),
++ &(file->f_ra),
++ sizeof(struct file_ra_state));
++#else
++ if (file->f_reada) { /* update readahead information if needed */
++ hidden_file->f_reada = file->f_reada;
++ hidden_file->f_ramax = file->f_ramax;
++ hidden_file->f_raend = file->f_raend;
++ hidden_file->f_ralen = file->f_ralen;
++ hidden_file->f_rawin = file->f_rawin;
++ }
++#endif
++ if (hidden_file->f_op && hidden_file->f_op->llseek)
++ err = hidden_file->f_op->llseek(hidden_file, offset, origin);
++ else
++ err = generic_file_llseek(hidden_file, offset, origin);
++
++ if (err < 0)
++ goto out;
++
++ if (err != file->f_pos) {
++ file->f_pos = err;
++ // ION maybe this?
++ // file->f_pos = hidden_file->f_pos;
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ file->f_reada = 0;
++#endif
++ file->f_version++;
++ }
++
++ out:
++ return err;
++}
++
++
++/* mk: fanout capable */
++STATIC ssize_t
++mini_fo_read(file_t *file, char *buf, size_t count, loff_t *ppos)
++{
++ int err = -EINVAL;
++ file_t *hidden_file = NULL;
++ loff_t pos = *ppos;
++
++ if(S_ISDIR(file->f_dentry->d_inode->i_mode)) {
++ /* Check if trying to read from a directory */
++ /* printk(KERN_CRIT "mini_fo_read: ERROR: trying to read data from a directory.\n"); */
++ err = -EISDIR;
++ goto out;
++ }
++
++ if (ftopd(file) != NULL) {
++ if(ftohf2(file)) {
++ hidden_file = ftohf2(file);
++ } else {
++ hidden_file = ftohf(file);
++ }
++ }
++
++ if (!hidden_file->f_op || !hidden_file->f_op->read)
++ goto out;
++
++ err = hidden_file->f_op->read(hidden_file, buf, count, &pos);
++ *ppos = pos;
++
++ if (err >= 0) {
++ /* atime should also be updated for reads of size zero or more */
++ fist_copy_attr_atime(file->f_dentry->d_inode,
++ hidden_file->f_dentry->d_inode);
++ }
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ /*
++ * MAJOR HACK
++ * because pread() does not have any way to tell us that it is
++ * our caller, then we don't know for sure if we have to update
++ * the file positions. This hack relies on read() having passed us
++ * the "real" pointer of its struct file's f_pos field.
++ */
++ if (ppos == &file->f_pos)
++ hidden_file->f_pos = *ppos = pos;
++ if (hidden_file->f_reada) { /* update readahead information if needed */
++ file->f_reada = hidden_file->f_reada;
++ file->f_ramax = hidden_file->f_ramax;
++ file->f_raend = hidden_file->f_raend;
++ file->f_ralen = hidden_file->f_ralen;
++ file->f_rawin = hidden_file->f_rawin;
++ }
++#else
++ memcpy(&(file->f_ra),&(hidden_file->f_ra),sizeof(struct file_ra_state));
++#endif
++
++ out:
++ return err;
++}
++
++
++/* this mini_fo_write() does not modify data pages! */
++STATIC ssize_t
++mini_fo_write(file_t *file, const char *buf, size_t count, loff_t *ppos)
++{
++ int err = -EINVAL;
++ file_t *hidden_file = NULL;
++ inode_t *inode;
++ inode_t *hidden_inode;
++ loff_t pos = *ppos;
++
++ /* mk: fan out: */
++ if (ftopd(file) != NULL) {
++ if(ftohf2(file)) {
++ hidden_file = ftohf2(file);
++ } else {
++ /* This is bad! We have no storage file to write to. This
++ * should never happen because if a file is opened for
++ * writing, a copy should have been made earlier.
++ */
++ printk(KERN_CRIT "mini_fo: write : ERROR, no storage file to write.\n");
++ err = -EINVAL;
++ goto out;
++ }
++ }
++
++ inode = file->f_dentry->d_inode;
++ hidden_inode = itohi2(inode);
++ if(!hidden_inode) {
++ printk(KERN_CRIT "mini_fo: write: no sto inode found, not good.\n");
++ goto out;
++ }
++
++ if (!hidden_file->f_op || !hidden_file->f_op->write)
++ goto out;
++
++ /* adjust for append -- seek to the end of the file */
++ if (file->f_flags & O_APPEND)
++ pos = inode->i_size;
++
++ err = hidden_file->f_op->write(hidden_file, buf, count, &pos);
++
++ /*
++ * copy ctime and mtime from lower layer attributes
++ * atime is unchanged for both layers
++ */
++ if (err >= 0)
++ fist_copy_attr_times(inode, hidden_inode);
++
++ *ppos = pos;
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ /*
++ * XXX: MAJOR HACK
++ *
++ * because pwrite() does not have any way to tell us that it is
++ * our caller, then we don't know for sure if we have to update
++ * the file positions. This hack relies on write() having passed us
++ * the "real" pointer of its struct file's f_pos field.
++ */
++ if (ppos == &file->f_pos)
++ hidden_file->f_pos = *ppos = pos;
++#endif
++ /* update this inode's size */
++ if (pos > inode->i_size)
++ inode->i_size = pos;
++
++ out:
++ return err;
++}
++
++/* Global variable to hold a file_t pointer.
++ * This serves to allow mini_fo_filldir function to know which file is
++ * beeing read, which is required for two reasons:
++ *
++ * - be able to call wol functions in order to avoid listing deleted
++ * base files.
++ * - if we're reading a directory which is in state 1, we need to
++ * maintain a list (in mini_fo_filldir) of which files allready
++ * have been copied to userspace,to detect files existing in base
++ * and storage and not list them twice.
++ */
++filldir_t mini_fo_filldir_orig;
++file_t *mini_fo_filldir_file;
++
++/* mainly copied from fs/readdir.c */
++STATIC int
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++mini_fo_filldir(void * __buf, const char * name, int namlen, loff_t offset,
++ u64 ino, unsigned int d_type)
++#else
++mini_fo_filldir(void * __buf, const char * name, int namlen, loff_t offset,
++ ino_t ino, unsigned int d_type)
++#endif
++{
++ struct getdents_callback * buf = (struct getdents_callback *) __buf;
++ file_t* file = mini_fo_filldir_file;
++
++ /* In theses states we filter meta files in storage (WOL) */
++ if(file && (dtopd(file->f_dentry)->state == MODIFIED ||
++ dtopd(file->f_dentry)->state == CREATED ||
++ dtopd(file->f_dentry)->state == DEL_REWRITTEN)) {
++
++ int tmp = strlen(META_FILENAME);
++ if(tmp == namlen) {
++ if(!strncmp(name, META_FILENAME, namlen))
++ return 0;
++ }
++ }
++
++ /* check if we are merging the contents of storage and base */
++ if(file && dtopd(file->f_dentry)->state == MODIFIED) {
++ /* check if we are still reading storage contents, if
++ * yes, we just save the name of the file for duplicate
++ * checking later. */
++
++ if(!ftopd(file)->rd.sto_done) {
++ /* put file into ndl list */
++ if(ndl_add_entry(&ftopd(file)->rd, name, namlen))
++ printk(KERN_CRIT "mini_fo_filldir: Error adding to ndl.\n");
++ } else {
++ /* check if file has been deleted */
++ if(meta_check_d_entry(file->f_dentry, name, namlen))
++ return 0;
++
++ /* do duplicate checking */
++ if(ndl_check_entry(&ftopd(file)->rd, name, namlen))
++ return 0;
++ }
++ }
++
++ return mini_fo_filldir_orig(buf, name, namlen, offset, ino, d_type);
++}
++
++
++STATIC int
++mini_fo_readdir(file_t *file, void *dirent, filldir_t filldir)
++{
++ int err = 0;/* mk: ??? -ENOTDIR; */
++ file_t *hidden_file = NULL;
++ file_t *hidden_sto_file = NULL;
++ inode_t *inode;
++ struct getdents_callback *buf;
++ int oldcount;
++
++#if defined(FIST_FILTER_NAME) || defined(FIST_FILTER_SCA)
++ struct mini_fo_getdents_callback buf;
++#endif /* FIST_FILTER_NAME || FIST_FILTER_SCA */
++
++ buf = (struct getdents_callback *) dirent;
++ oldcount = buf->count;
++ inode = file->f_dentry->d_inode;
++ mini_fo_filldir_file = file;
++ mini_fo_filldir_orig = filldir;
++
++ ftopd(file)->rd.sto_done = 0;
++ do {
++ if (ftopd(file) != NULL) {
++ if(ftohf2(file)) {
++ hidden_sto_file = ftohf2(file);
++ err = vfs_readdir(hidden_sto_file, mini_fo_filldir, dirent);
++ file->f_pos = hidden_sto_file->f_pos;
++ if (err > 0)
++ fist_copy_attr_atime(inode, hidden_sto_file->f_dentry->d_inode);
++ /* not finshed yet, we'll be called again */
++ if (buf->count != oldcount)
++ break;
++ }
++
++ ftopd(file)->rd.sto_done = 1;
++
++ if(ftohf(file)) {
++ hidden_file = ftohf(file);
++ err = vfs_readdir(hidden_file, mini_fo_filldir, dirent);
++ file->f_pos = hidden_file->f_pos;
++ if (err > 0)
++ fist_copy_attr_atime(inode, hidden_file->f_dentry->d_inode);
++ }
++
++ }
++ } while (0);
++
++ /* mk:
++ * we need to check if all the directory data has been copied to userspace,
++ * or if we will be called again by userspace to complete the operation.
++ */
++ if(buf->count == oldcount) {
++ ndl_put_list(&ftopd(file)->rd);
++ }
++
++ /* unset this, safe */
++ mini_fo_filldir_file = NULL;
++ return err;
++}
++
++
++STATIC unsigned int
++mini_fo_poll(file_t *file, poll_table *wait)
++{
++ unsigned int mask = DEFAULT_POLLMASK;
++ file_t *hidden_file = NULL;
++
++ if (ftopd(file) != NULL) {
++ if(ftohf2(file)) {
++ hidden_file = ftohf2(file);
++ } else {
++ hidden_file = ftohf(file);
++ }
++ }
++
++ if (!hidden_file->f_op || !hidden_file->f_op->poll)
++ goto out;
++
++ mask = hidden_file->f_op->poll(hidden_file, wait);
++
++ out:
++ return mask;
++}
++
++/* FIST-LITE special version of mmap */
++STATIC int
++mini_fo_mmap(file_t *file, vm_area_t *vma)
++{
++ int err = 0;
++ file_t *hidden_file = NULL;
++
++ /* fanout capability */
++ if (ftopd(file) != NULL) {
++ if(ftohf2(file)) {
++ hidden_file = ftohf2(file);
++ } else {
++ hidden_file = ftohf(file);
++ }
++ }
++
++ ASSERT(hidden_file != NULL);
++ ASSERT(hidden_file->f_op != NULL);
++ ASSERT(hidden_file->f_op->mmap != NULL);
++
++ vma->vm_file = hidden_file;
++ err = hidden_file->f_op->mmap(hidden_file, vma);
++ get_file(hidden_file); /* make sure it doesn't get freed on us */
++ fput(file); /* no need to keep extra ref on ours */
++
++ return err;
++}
++
++
++
++STATIC int
++mini_fo_open(inode_t *inode, file_t *file)
++{
++ int err = 0;
++ int hidden_flags;
++ file_t *hidden_file = NULL;
++ dentry_t *hidden_dentry = NULL;
++
++ /* fanout stuff */
++ file_t *hidden_sto_file = NULL;
++ dentry_t *hidden_sto_dentry = NULL;
++
++ __ftopd(file) =
++ kmalloc(sizeof(struct mini_fo_file_info), GFP_KERNEL);
++ if (!ftopd(file)) {
++ err = -ENOMEM;
++ goto out;
++ }
++
++ /* init the readdir_helper structure */
++ INIT_LIST_HEAD(&ftopd(file)->rd.ndl_list);
++ ftopd(file)->rd.ndl_size = 0;
++
++ /* In certain paths this could stay uninitalized and cause trouble */
++ ftohf(file) = NULL;
++ ftohf2(file) = NULL;
++ hidden_flags = file->f_flags;
++
++ /* create storage files? */
++ if(dtost(file->f_dentry) == UNMODIFIED) {
++ if(!IS_WRITE_FLAG(file->f_flags)) {
++ hidden_dentry = dtohd(file->f_dentry);
++ dget(hidden_dentry);
++ /* dentry_open will decrement mnt refcnt if err.
++ * otherwise fput() will do an mntput() for us upon file close. */
++ mntget(stopd(inode->i_sb)->hidden_mnt);
++ hidden_file = dentry_open(hidden_dentry,
++ stopd(inode->i_sb)->hidden_mnt,
++ hidden_flags);
++ if (IS_ERR(hidden_file)) {
++ err = PTR_ERR(hidden_file);
++ dput(hidden_dentry);
++ goto out;
++ }
++ ftohf(file) = hidden_file; /* link two files */
++ goto out;
++ }
++ else {
++ if(S_ISDIR(file->f_dentry->d_inode->i_mode)) {
++ err = dir_unmod_to_mod(file->f_dentry);
++ } else
++ err = nondir_unmod_to_mod(file->f_dentry, 1);
++
++ if (err) {
++ printk("mini_fo_open: ERROR creating storage file.\n");
++ goto out;
++ }
++ }
++ }
++ hidden_sto_dentry = dtohd2(file->f_dentry);
++ dget(hidden_sto_dentry);
++
++ if(dtopd(file->f_dentry)->state == MODIFIED) {
++ /* Directorys are special, interpose on both lower level files */
++ if(S_ISDIR(itohi(inode)->i_mode)) {
++ /* check for invalid file types of lower level files */
++ if(!(S_ISDIR(itohi(inode)->i_mode) && S_ISDIR(itohi2(inode)->i_mode))) {
++ printk(KERN_CRIT "mini_fo_open: meta data corruption detected.\n");
++ dput(hidden_sto_dentry);
++ err = -EINVAL;
++ goto out;
++ }
++
++ /* lower level directorys are ok, open the base file */
++ hidden_dentry = dtohd(file->f_dentry);
++ dget(hidden_dentry);
++
++ mntget(stopd(inode->i_sb)->hidden_mnt);
++ hidden_file = dentry_open(hidden_dentry,
++ stopd(inode->i_sb)->hidden_mnt,
++ hidden_flags);
++ if (IS_ERR(hidden_file)) {
++ err = PTR_ERR(hidden_file);
++ dput(hidden_dentry);
++ dput(hidden_sto_dentry);
++ goto out;
++ }
++ ftohf(file) = hidden_file; /* link the two files */
++ }
++ }
++
++ if(!exists_in_storage(file->f_dentry)) {
++ printk(KERN_CRIT "mini_fo_open: invalid file state detected.\n");
++ err = -EINVAL;
++ dput(hidden_sto_dentry);
++
++ /* If the base file has been opened, we need to close it here */
++ if(ftohf(file)) {
++ if (hidden_file->f_op && hidden_file->f_op->flush)
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++ hidden_file->f_op->flush(hidden_file, NULL);
++#else
++ hidden_file->f_op->flush(hidden_file);
++#endif
++ dput(hidden_dentry);
++ }
++ goto out;
++ }
++
++ /* ok, now we can safely open the storage file */
++ mntget(stopd(inode->i_sb)->hidden_mnt2);
++ hidden_sto_file = dentry_open(hidden_sto_dentry,
++ stopd(inode->i_sb)->hidden_mnt2,
++ hidden_flags);
++
++ /* dentry_open dputs the dentry if it fails */
++ if (IS_ERR(hidden_sto_file)) {
++ err = PTR_ERR(hidden_sto_file);
++ /* close base file if open */
++ if(ftohf(file)) {
++ if (hidden_file->f_op && hidden_file->f_op->flush)
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++ hidden_file->f_op->flush(hidden_file, NULL);
++#else
++ hidden_file->f_op->flush(hidden_file);
++#endif
++ dput(hidden_dentry);
++ }
++ goto out;
++ }
++ ftohf2(file) = hidden_sto_file; /* link storage file */
++
++ out:
++ if (err < 0 && ftopd(file)) {
++ kfree(ftopd(file));
++ }
++ return err;
++}
++
++STATIC int
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++mini_fo_flush(file_t *file, fl_owner_t id)
++#else
++mini_fo_flush(file_t *file)
++#endif
++{
++ int err1 = 0; /* assume ok (see open.c:close_fp) */
++ int err2 = 0;
++ file_t *hidden_file = NULL;
++
++ check_mini_fo_file(file);
++
++ /* mk: we don't do any state checking here, as its not worth the time.
++ * Just flush the lower level files if they exist.
++ */
++ if(ftopd(file) != NULL) {
++ if(ftohf(file) != NULL) {
++ hidden_file = ftohf(file);
++ if (hidden_file->f_op && hidden_file->f_op->flush)
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++ err1 = hidden_file->f_op->flush(hidden_file, id);
++#else
++ err1 = hidden_file->f_op->flush(hidden_file);
++#endif
++ }
++ if(ftohf2(file) != NULL) {
++ hidden_file = ftohf2(file);
++ if (hidden_file->f_op && hidden_file->f_op->flush)
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++ err2 = hidden_file->f_op->flush(hidden_file, id);
++#else
++ err2 = hidden_file->f_op->flush(hidden_file);
++#endif
++ }
++ }
++ return (err1 | err2);
++}
++
++
++STATIC int
++mini_fo_release(inode_t *inode, file_t *file)
++{
++ int err = 0;
++ file_t *hidden_file = NULL;
++
++ if (ftopd(file) != NULL) {
++ if(ftohf(file)) {
++ hidden_file = ftohf(file);
++ fput(hidden_file);
++ }
++ if(ftohf2(file)) {
++ hidden_file = ftohf2(file);
++ fput(hidden_file);
++ }
++ kfree(ftopd(file));
++ }
++ return err;
++}
++
++STATIC int
++mini_fo_fsync(file_t *file, dentry_t *dentry, int datasync)
++{
++ int err1 = 0;
++ int err2 = 0;
++ file_t *hidden_file = NULL;
++ dentry_t *hidden_dentry;
++
++ check_mini_fo_file(file);
++
++ if ((hidden_file = ftohf(file)) != NULL) {
++ hidden_dentry = dtohd(dentry);
++ if (hidden_file->f_op && hidden_file->f_op->fsync) {
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_dentry->d_inode->i_sem);
++#endif
++ err1 = hidden_file->f_op->fsync(hidden_file, hidden_dentry, datasync);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_dentry->d_inode->i_sem);
++#endif
++ }
++ }
++
++ if ((hidden_file = ftohf2(file)) != NULL) {
++ hidden_dentry = dtohd2(dentry);
++ if (hidden_file->f_op && hidden_file->f_op->fsync) {
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_dentry->d_inode->i_sem);
++#endif
++ err2 = hidden_file->f_op->fsync(hidden_file, hidden_dentry, datasync);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_dentry->d_inode->i_sem);
++#endif
++ }
++ }
++ else
++ goto err;
++
++err:
++ return (err1 || err2);
++}
++
++
++STATIC int
++mini_fo_fasync(int fd, file_t *file, int flag)
++{
++ int err1 = 0;
++ int err2 = 0;
++
++ file_t *hidden_file = NULL;
++
++ check_mini_fo_file(file);
++
++ if((hidden_file = ftohf(file)) != NULL) {
++ err1 = hidden_file->f_op->fasync(fd, hidden_file, flag);
++ }
++ if((hidden_file = ftohf2(file)) != NULL) {
++ err2 = hidden_file->f_op->fasync(fd, hidden_file, flag);
++ }
++
++ return (err1 || err2);
++}
++
++
++
++struct file_operations mini_fo_dir_fops =
++ {
++ read: generic_read_dir,
++ write: mini_fo_write,
++ readdir: mini_fo_readdir,
++ poll: mini_fo_poll,
++ /* ioctl: mini_fo_ioctl, */
++ mmap: mini_fo_mmap,
++ open: mini_fo_open,
++ flush: mini_fo_flush,
++ release: mini_fo_release,
++ fsync: mini_fo_fsync,
++ fasync: mini_fo_fasync,
++ /* not needed lock: mini_fo_lock, */
++ /* not needed: readv */
++ /* not needed: writev */
++ /* not implemented: sendpage */
++ /* not implemented: get_unmapped_area */
++ };
++
++struct file_operations mini_fo_main_fops =
++ {
++ llseek: mini_fo_llseek,
++ read: mini_fo_read,
++ write: mini_fo_write,
++ readdir: mini_fo_readdir,
++ poll: mini_fo_poll,
++ /* ioctl: mini_fo_ioctl, */
++ mmap: mini_fo_mmap,
++ open: mini_fo_open,
++ flush: mini_fo_flush,
++ release: mini_fo_release,
++ fsync: mini_fo_fsync,
++ fasync: mini_fo_fasync,
++ /* not needed: lock: mini_fo_lock, */
++ /* not needed: readv */
++ /* not needed: writev */
++ /* not implemented: sendpage */
++ /* not implemented: get_unmapped_area */
++ };
+Index: linux-2.6.23-rc6/fs/mini_fo/fist.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/fist.h 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,252 @@
++/*
++ * Copyright (c) 1997-2003 Erez Zadok
++ * Copyright (c) 2001-2003 Stony Brook University
++ *
++ * For specific licensing information, see the COPYING file distributed with
++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING.
++ *
++ * This Copyright notice must be kept intact and distributed with all
++ * fistgen sources INCLUDING sources generated by fistgen.
++ */
++/*
++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++
++/*
++ * $Id$
++ */
++
++#ifndef __FIST_H_
++#define __FIST_H_
++
++/*
++ * KERNEL ONLY CODE:
++ */
++#ifdef __KERNEL__
++#include <linux/version.h>
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,19)
++#include <linux/autoconf.h>
++#else
++#include <linux/config.h>
++#endif
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++#ifdef CONFIG_MODVERSIONS
++# define MODVERSIONS
++# include <linux/modversions.h>
++#endif /* CONFIG_MODVERSIONS */
++#endif /* KERNEL_VERSION < 2.6.0 */
++#include <linux/sched.h>
++#include <linux/kernel.h>
++#include <linux/mm.h>
++#include <linux/string.h>
++#include <linux/stat.h>
++#include <linux/errno.h>
++#include <linux/wait.h>
++#include <linux/limits.h>
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++#include <linux/locks.h>
++#else
++#include <linux/buffer_head.h>
++#include <linux/pagemap.h>
++#include <linux/namei.h>
++#include <linux/module.h>
++#include <linux/mount.h>
++#include <linux/page-flags.h>
++#include <linux/writeback.h>
++#include <linux/statfs.h>
++#endif
++#include <linux/smp.h>
++#include <linux/smp_lock.h>
++#include <linux/file.h>
++#include <linux/slab.h>
++#include <linux/vmalloc.h>
++#include <linux/poll.h>
++#include <linux/list.h>
++#include <linux/init.h>
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)
++#include <linux/xattr.h>
++#endif
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++#include <linux/security.h>
++#endif
++
++#include <linux/swap.h>
++
++#include <asm/system.h>
++/* #include <asm/segment.h> */
++#include <asm/mman.h>
++#include <linux/seq_file.h>
++
++/*
++ * MACROS:
++ */
++
++/* those mapped to ATTR_* were copied from linux/fs.h */
++#define FA_MODE ATTR_MODE
++#define FA_UID ATTR_UID
++#define FA_GID ATTR_GID
++#define FA_SIZE ATTR_SIZE
++#define FA_ATIME ATTR_ATIME
++#define FA_MTIME ATTR_MTIME
++#define FA_CTIME ATTR_CTIME
++#define FA_ATIME_SET ATTR_ATIME_SET
++#define FA_MTIME_SET ATTR_MTIME_SET
++#define FA_FORCE ATTR_FORCE
++#define FA_ATTR_FLAGS ATTR_ATTR_FLAG
++
++/* must be greater than all other ATTR_* flags! */
++#define FA_NLINK 2048
++#define FA_BLKSIZE 4096
++#define FA_BLOCKS 8192
++#define FA_TIMES (FA_ATIME|FA_MTIME|FA_CTIME)
++#define FA_ALL 0
++
++/* macros to manage changes between kernels */
++#define INODE_DATA(i) (&(i)->i_data)
++
++#define MIN(x,y) ((x < y) ? (x) : (y))
++#define MAX(x,y) ((x > y) ? (x) : (y))
++#define MAXPATHLEN PATH_MAX
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,5)
++# define lookup_one_len(a,b,c) lookup_one(a,b)
++#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,4,5) */
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,8)
++# define generic_file_llseek default_llseek
++#endif /* LINUX_VERSION_CODE < KERNEL_VERSION(2,4,8) */
++
++#ifndef SEEK_SET
++# define SEEK_SET 0
++#endif /* not SEEK_SET */
++
++#ifndef SEEK_CUR
++# define SEEK_CUR 1
++#endif /* not SEEK_CUR */
++
++#ifndef SEEK_END
++# define SEEK_END 2
++#endif /* not SEEK_END */
++
++#ifndef DEFAULT_POLLMASK
++# define DEFAULT_POLLMASK (POLLIN | POLLOUT | POLLRDNORM | POLLWRNORM)
++#endif /* not DEFAULT_POLLMASK */
++
++/* XXX: fix this so fistgen generates kfree() code directly */
++#define kfree_s(a,b) kfree(a)
++
++/*
++ * TYPEDEFS:
++ */
++typedef struct dentry dentry_t;
++typedef struct file file_t;
++typedef struct inode inode_t;
++typedef inode_t vnode_t;
++typedef struct page page_t;
++typedef struct qstr qstr_t;
++typedef struct super_block super_block_t;
++typedef super_block_t vfs_t;
++typedef struct vm_area_struct vm_area_t;
++
++
++/*
++ * EXTERNALS:
++ */
++
++#define FPPF(str,page) printk("PPF %s 0x%x/%d: Lck:%d Err:%d Ref:%d Upd:%d Other::%d:%d:%d:%d:\n", \
++ str, \
++ (int) page, \
++ (int) page->index, \
++ (PageLocked(page) ? 1 : 0), \
++ (PageError(page) ? 1 : 0), \
++ (PageReferenced(page) ? 1 : 0), \
++ (Page_Uptodate(page) ? 1 : 0), \
++ (PageDecrAfter(page) ? 1 : 0), \
++ (PageSlab(page) ? 1 : 0), \
++ (PageSwapCache(page) ? 1 : 0), \
++ (PageReserved(page) ? 1 : 0) \
++ )
++#define EZKDBG printk("EZK %s:%d:%s\n",__FILE__,__LINE__,__FUNCTION__)
++#if 0
++# define EZKDBG1 printk("EZK %s:%d\n",__FILE__,__LINE__)
++#else
++# define EZKDBG1
++#endif
++
++extern int fist_get_debug_value(void);
++extern int fist_set_debug_value(int val);
++#if 0 /* mini_fo doesn't need these */
++extern void fist_dprint_internal(int level, char *str,...);
++extern void fist_print_dentry(char *str, const dentry_t *dentry);
++extern void fist_print_inode(char *str, const inode_t *inode);
++extern void fist_print_file(char *str, const file_t *file);
++extern void fist_print_buffer_flags(char *str, struct buffer_head *buffer);
++extern void fist_print_page_flags(char *str, page_t *page);
++extern void fist_print_page_bytes(char *str, page_t *page);
++extern void fist_print_pte_flags(char *str, const page_t *page);
++extern void fist_checkinode(inode_t *inode, char *msg);
++extern void fist_print_sb(char *str, const super_block_t *sb);
++
++/* §$% by mk: special debug functions */
++extern void fist_mk_print_dentry(char *str, const dentry_t *dentry);
++extern void fist_mk_print_inode(char *str, const inode_t *inode);
++
++extern char *add_indent(void);
++extern char *del_indent(void);
++#endif/* mini_fo doesn't need these */
++
++
++#define STATIC
++#define ASSERT(EX) \
++do { \
++ if (!(EX)) { \
++ printk(KERN_CRIT "ASSERTION FAILED: %s at %s:%d (%s)\n", #EX, \
++ __FILE__, __LINE__, __FUNCTION__); \
++ (*((char *)0))=0; \
++ } \
++} while (0)
++/* same ASSERT, but tell me who was the caller of the function */
++#define ASSERT2(EX) \
++do { \
++ if (!(EX)) { \
++ printk(KERN_CRIT "ASSERTION FAILED (caller): %s at %s:%d (%s)\n", #EX, \
++ file, line, func); \
++ (*((char *)0))=0; \
++ } \
++} while (0)
++
++#if 0 /* mini_fo doesn't need these */
++#define dprintk(format, args...) printk(KERN_DEBUG format, ##args)
++#define fist_dprint(level, str, args...) fist_dprint_internal(level, KERN_DEBUG str, ## args)
++#define print_entry_location() fist_dprint(4, "%sIN: %s %s:%d\n", add_indent(), __FUNCTION__, __FILE__, __LINE__)
++#define print_exit_location() fist_dprint(4, "%s OUT: %s %s:%d\n", del_indent(), __FUNCTION__, __FILE__, __LINE__)
++#define print_exit_status(status) fist_dprint(4, "%s OUT: %s %s:%d, STATUS: %d\n", del_indent(), __FUNCTION__, __FILE__, __LINE__, status)
++#define print_exit_pointer(status) \
++do { \
++ if (IS_ERR(status)) \
++ fist_dprint(4, "%s OUT: %s %s:%d, RESULT: %ld\n", del_indent(), __FUNCTION__, __FILE__, __LINE__, PTR_ERR(status)); \
++ else \
++ fist_dprint(4, "%s OUT: %s %s:%d, RESULT: 0x%x\n", del_indent(), __FUNCTION__, __FILE__, __LINE__, PTR_ERR(status)); \
++} while (0)
++#endif/* mini_fo doesn't need these */
++
++#endif /* __KERNEL__ */
++
++
++/*
++ * DEFINITIONS FOR USER AND KERNEL CODE:
++ * (Note: ioctl numbers 1--9 are reserved for fistgen, the rest
++ * are auto-generated automatically based on the user's .fist file.)
++ */
++# define FIST_IOCTL_GET_DEBUG_VALUE _IOR(0x15, 1, int)
++# define FIST_IOCTL_SET_DEBUG_VALUE _IOW(0x15, 2, int)
++
++#endif /* not __FIST_H_ */
+Index: linux-2.6.23-rc6/fs/mini_fo/inode.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/inode.c 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,1564 @@
++/*
++ * Copyright (c) 1997-2003 Erez Zadok
++ * Copyright (c) 2001-2003 Stony Brook University
++ *
++ * For specific licensing information, see the COPYING file distributed with
++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING.
++ *
++ * This Copyright notice must be kept intact and distributed with all
++ * fistgen sources INCLUDING sources generated by fistgen.
++ */
++/*
++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++/*
++ * $Id$
++ */
++
++#ifdef HAVE_CONFIG_H
++# include <config.h>
++#endif
++
++#include "fist.h"
++#include "mini_fo.h"
++
++STATIC int
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++mini_fo_create(inode_t *dir, dentry_t *dentry, int mode, struct nameidata *nd)
++#else
++mini_fo_create(inode_t *dir, dentry_t *dentry, int mode)
++#endif
++{
++ int err = 0;
++
++ check_mini_fo_dentry(dentry);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ err = create_sto_reg_file(dentry, mode, nd);
++#else
++ err = create_sto_reg_file(dentry, mode);
++#endif
++ check_mini_fo_dentry(dentry);
++ return err;
++}
++
++
++STATIC dentry_t *
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++mini_fo_lookup(inode_t *dir, dentry_t *dentry, struct nameidata* nd)
++#else
++mini_fo_lookup(inode_t *dir, dentry_t *dentry)
++#endif
++{
++ int err = 0;
++ dentry_t *hidden_dir_dentry;
++ dentry_t *hidden_dentry = NULL;
++
++ dentry_t *hidden_sto_dir_dentry;
++ dentry_t *hidden_sto_dentry = NULL;
++
++ /* whiteout flag */
++ int del_flag = 0;
++ char *bpath = NULL;
++
++ const char *name;
++ unsigned int namelen;
++
++ /* Don't allow lookups of META-files */
++ namelen = strlen(META_FILENAME);
++ if(namelen == dentry->d_name.len) {
++ if(!strncmp(dentry->d_name.name, META_FILENAME, namelen)) {
++ err = -ENOENT;
++ goto out;
++ }
++ }
++
++ hidden_dir_dentry = dtohd(dentry->d_parent);
++ hidden_sto_dir_dentry = dtohd2(dentry->d_parent);
++
++ name = dentry->d_name.name;
++ namelen = dentry->d_name.len;
++
++ /* must initialize dentry operations */
++ dentry->d_op = &mini_fo_dops;
++
++ /* setup the del_flag */
++ del_flag = __meta_check_d_entry(dir, name, namelen);
++ bpath = __meta_check_r_entry(dir, name, namelen);
++
++ /* perform the lookups of base and storage files:
++ *
++ * This caused some serious trouble, as a lookup_one_len passing
++ * a negative dentry oopses. Solution is to only do the lookup
++ * if the dentry is positive, else we set it to NULL
++ * More trouble, who said a *_dir_dentry can't be NULL?
++ */
++ if(bpath) {
++ /* Cross-Interposing (C), yeah! */
++ hidden_dentry = bpath_walk(dir->i_sb, bpath);
++ if(!hidden_dentry || !hidden_dentry->d_inode) {
++ printk(KERN_CRIT "mini_fo_lookup: bpath_walk failed.\n");
++ err= -EINVAL;
++ goto out;
++ }
++
++ /* this can be set up safely without fear of spaghetti
++ * interposing as it is only used for copying times */
++ hidden_dir_dentry = hidden_dentry->d_parent;
++ kfree(bpath);
++ }
++ else if(hidden_dir_dentry && hidden_dir_dentry->d_inode)
++ hidden_dentry =
++ lookup_one_len(name, hidden_dir_dentry, namelen);
++ else
++ hidden_dentry = NULL;
++
++ if(hidden_sto_dir_dentry && hidden_sto_dir_dentry->d_inode)
++ hidden_sto_dentry =
++ lookup_one_len(name, hidden_sto_dir_dentry, namelen);
++ else
++ hidden_sto_dentry = NULL;
++
++ /* catch error in lookup */
++ if (IS_ERR(hidden_dentry) || IS_ERR(hidden_sto_dentry)) {
++ /* mk: we need to call dput on the dentry, whose
++ * lookup_one_len operation failed, in order to avoid
++ * unmount trouble.
++ */
++ if(IS_ERR(hidden_dentry)) {
++ printk(KERN_CRIT "mini_fo_lookup: ERR from base dentry, lookup failed.\n");
++ err = PTR_ERR(hidden_dentry);
++ } else {
++ dput(hidden_dentry);
++ }
++ if(IS_ERR(hidden_sto_dentry)) {
++ printk(KERN_CRIT "mini_fo_lookup: ERR from storage dentry, lookup failed.\n");
++ err = PTR_ERR(hidden_sto_dentry);
++ } else {
++ dput(hidden_sto_dentry);
++ }
++ goto out;
++ }
++
++ /* allocate dentry private data */
++ __dtopd(dentry) = (struct mini_fo_dentry_info *)
++ kmalloc(sizeof(struct mini_fo_dentry_info), GFP_KERNEL);
++
++ if (!dtopd(dentry)) {
++ err = -ENOMEM;
++ goto out_dput;
++ }
++
++ /* check for different states of the mini_fo file to be looked up. */
++
++ /* state 1, file has been modified */
++ if(hidden_dentry && hidden_sto_dentry &&
++ hidden_dentry->d_inode && hidden_sto_dentry->d_inode && !del_flag) {
++
++ /* update parent directory's atime */
++ fist_copy_attr_atime(dir, hidden_sto_dir_dentry->d_inode);
++
++ dtopd(dentry)->state = MODIFIED;
++ dtohd(dentry) = hidden_dentry;
++ dtohd2(dentry) = hidden_sto_dentry;
++
++ err = mini_fo_tri_interpose(hidden_dentry,
++ hidden_sto_dentry,
++ dentry, dir->i_sb, 1);
++ if (err) {
++ printk(KERN_CRIT "mini_fo_lookup: error interposing (state1).\n");
++ goto out_free;
++ }
++ goto out;
++ }
++ /* state 2, file is unmodified */
++ if(hidden_dentry && hidden_dentry->d_inode && !del_flag) {
++
++ fist_copy_attr_atime(dir, hidden_dir_dentry->d_inode);
++
++ dtopd(dentry)->state = UNMODIFIED;
++ dtohd(dentry) = hidden_dentry;
++ dtohd2(dentry) = hidden_sto_dentry; /* could be negative */
++
++ err = mini_fo_tri_interpose(hidden_dentry,
++ hidden_sto_dentry,
++ dentry, dir->i_sb, 1);
++ if (err) {
++ printk(KERN_CRIT "mini_fo_lookup: error interposing (state2).\n");
++ goto out_free;
++ }
++ goto out;
++ }
++ /* state 3, file has been newly created */
++ if(hidden_sto_dentry && hidden_sto_dentry->d_inode && !del_flag) {
++
++ fist_copy_attr_atime(dir, hidden_sto_dir_dentry->d_inode);
++ dtopd(dentry)->state = CREATED;
++ dtohd(dentry) = hidden_dentry; /* could be negative */
++ dtohd2(dentry) = hidden_sto_dentry;
++
++ err = mini_fo_tri_interpose(hidden_dentry,
++ hidden_sto_dentry,
++ dentry, dir->i_sb, 1);
++ if (err) {
++ printk(KERN_CRIT "mini_fo_lookup: error interposing (state3).\n");
++ goto out_free;
++ }
++ goto out;
++ }
++
++ /* state 4, file has deleted and created again. */
++ if(hidden_dentry && hidden_sto_dentry &&
++ hidden_dentry->d_inode &&
++ hidden_sto_dentry->d_inode && del_flag) {
++
++ fist_copy_attr_atime(dir, hidden_sto_dir_dentry->d_inode);
++ dtopd(dentry)->state = DEL_REWRITTEN;
++ dtohd(dentry) = NULL;
++ dtohd2(dentry) = hidden_sto_dentry;
++
++ err = mini_fo_tri_interpose(NULL,
++ hidden_sto_dentry,
++ dentry, dir->i_sb, 1);
++ if (err) {
++ printk(KERN_CRIT "mini_fo_lookup: error interposing (state4).\n");
++ goto out_free;
++ }
++ /* We will never need this dentry again, as the file has been
++ * deleted from base */
++ dput(hidden_dentry);
++ goto out;
++ }
++ /* state 5, file has been deleted in base */
++ if(hidden_dentry && hidden_sto_dentry &&
++ hidden_dentry->d_inode &&
++ !hidden_sto_dentry->d_inode && del_flag) {
++
++ /* check which parents atime we need for updating */
++ if(hidden_sto_dir_dentry->d_inode)
++ fist_copy_attr_atime(dir,
++ hidden_sto_dir_dentry->d_inode);
++ else
++ fist_copy_attr_atime(dir,
++ hidden_dir_dentry->d_inode);
++
++ dtopd(dentry)->state = DELETED;
++ dtohd(dentry) = NULL;
++ dtohd2(dentry) = hidden_sto_dentry;
++
++ /* add negative dentry to dcache to speed up lookups */
++ d_add(dentry, NULL);
++ dput(hidden_dentry);
++ goto out;
++ }
++ /* state 6, file does not exist */
++ if(((hidden_dentry && !hidden_dentry->d_inode) ||
++ (hidden_sto_dentry && !hidden_sto_dentry->d_inode)) && !del_flag)
++ {
++ /* check which parents atime we need for updating */
++ if(hidden_sto_dir_dentry && hidden_sto_dir_dentry->d_inode)
++ fist_copy_attr_atime(dir, hidden_sto_dir_dentry->d_inode);
++ else
++ fist_copy_attr_atime(dir, hidden_dir_dentry->d_inode);
++
++ dtopd(dentry)->state = NON_EXISTANT;
++ dtohd(dentry) = hidden_dentry;
++ dtohd2(dentry) = hidden_sto_dentry;
++ d_add(dentry, NULL);
++ goto out;
++ }
++
++ /* if we get to here, were in an invalid state. bad. */
++ printk(KERN_CRIT "mini_fo_lookup: ERROR, meta data corruption detected.\n");
++
++ /* end state checking */
++ out_free:
++ d_drop(dentry); /* so that our bad dentry will get destroyed */
++ kfree(dtopd(dentry));
++ __dtopd(dentry) = NULL; /* be safe */
++
++ out_dput:
++ if(hidden_dentry)
++ dput(hidden_dentry);
++ if(hidden_sto_dentry)
++ dput(hidden_sto_dentry); /* drops usage count and marks for release */
++
++ out:
++ /* initalize wol if file exists and is directory */
++ if(dentry->d_inode) {
++ if(S_ISDIR(dentry->d_inode->i_mode)) {
++ itopd(dentry->d_inode)->deleted_list_size = -1;
++ itopd(dentry->d_inode)->renamed_list_size = -1;
++ meta_build_lists(dentry);
++ }
++ }
++ return ERR_PTR(err);
++}
++
++
++STATIC int
++mini_fo_link(dentry_t *old_dentry, inode_t *dir, dentry_t *new_dentry)
++{
++ int err;
++ dentry_t *hidden_old_dentry;
++ dentry_t *hidden_new_dentry;
++ dentry_t *hidden_dir_dentry;
++
++
++ check_mini_fo_dentry(old_dentry);
++ check_mini_fo_dentry(new_dentry);
++ check_mini_fo_inode(dir);
++
++ /* no links to directorys and existing targets target allowed */
++ if(S_ISDIR(old_dentry->d_inode->i_mode) ||
++ is_mini_fo_existant(new_dentry)) {
++ err = -EPERM;
++ goto out;
++ }
++
++ /* bring it directly from unmod to del_rew */
++ if(dtost(old_dentry) == UNMODIFIED) {
++ err = nondir_unmod_to_mod(old_dentry, 1);
++ if(err) {
++ err = -EINVAL;
++ goto out;
++ }
++ err = meta_add_d_entry(old_dentry->d_parent,
++ old_dentry->d_name.name,
++ old_dentry->d_name.len);
++ if(err) {
++ err = -EINVAL;
++ goto out;
++ }
++ dput(dtohd(old_dentry));
++ dtohd(old_dentry) = NULL;
++ dtost(old_dentry) = DEL_REWRITTEN;
++ }
++
++ err = get_neg_sto_dentry(new_dentry);
++ if(err) {
++ err = -EINVAL;
++ goto out;
++ }
++
++ hidden_old_dentry = dtohd2(old_dentry);
++ hidden_new_dentry = dtohd2(new_dentry);
++
++ dget(hidden_old_dentry);
++ dget(hidden_new_dentry);
++
++ /* was: hidden_dir_dentry = lock_parent(hidden_new_dentry); */
++ hidden_dir_dentry = dget(hidden_new_dentry->d_parent);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_dir_dentry->d_inode->i_sem);
++#endif
++
++ err = vfs_link(hidden_old_dentry,
++ hidden_dir_dentry->d_inode,
++ hidden_new_dentry);
++ if (err || !hidden_new_dentry->d_inode)
++ goto out_lock;
++
++ dtost(new_dentry) = CREATED;
++ err = mini_fo_tri_interpose(NULL, hidden_new_dentry, new_dentry, dir->i_sb, 0);
++ if (err)
++ goto out_lock;
++
++ fist_copy_attr_timesizes(dir, hidden_new_dentry->d_inode);
++ /* propagate number of hard-links */
++ old_dentry->d_inode->i_nlink = itohi2(old_dentry->d_inode)->i_nlink;
++
++ out_lock:
++ /* was: unlock_dir(hidden_dir_dentry); */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_dir_dentry);
++
++ dput(hidden_new_dentry);
++ dput(hidden_old_dentry);
++ if (!new_dentry->d_inode)
++ d_drop(new_dentry);
++
++ out:
++ return err;
++}
++
++
++STATIC int
++mini_fo_unlink(inode_t *dir, dentry_t *dentry)
++{
++ int err = 0;
++
++ dget(dentry);
++ if(dtopd(dentry)->state == MODIFIED) {
++ err = nondir_mod_to_del(dentry);
++ goto out;
++ }
++ else if(dtopd(dentry)->state == UNMODIFIED) {
++ err = nondir_unmod_to_del(dentry);
++ goto out;
++ }
++ else if(dtopd(dentry)->state == CREATED) {
++ err = nondir_creat_to_del(dentry);
++ goto out;
++ }
++ else if(dtopd(dentry)->state == DEL_REWRITTEN) {
++ err = nondir_del_rew_to_del(dentry);
++ goto out;
++ }
++
++ printk(KERN_CRIT "mini_fo_unlink: ERROR, invalid state detected.\n");
++
++ out:
++ fist_copy_attr_times(dir, itohi2(dentry->d_parent->d_inode));
++
++ if(!err) {
++ /* is this causing my pain? d_delete(dentry); */
++ d_drop(dentry);
++ }
++
++ dput(dentry);
++ return err;
++}
++
++
++STATIC int
++mini_fo_symlink(inode_t *dir, dentry_t *dentry, const char *symname)
++{
++ int err=0;
++ dentry_t *hidden_sto_dentry;
++ dentry_t *hidden_sto_dir_dentry;
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ umode_t mode;
++#endif
++
++ /* Fail if the symlink file exists */
++ if(!(dtost(dentry) == DELETED ||
++ dtost(dentry) == NON_EXISTANT)) {
++ err = -EEXIST;
++ goto out;
++ }
++
++ err = get_neg_sto_dentry(dentry);
++ if(err) {
++ err = -EINVAL;
++ goto out;
++ }
++ hidden_sto_dentry = dtohd2(dentry);
++
++ dget(hidden_sto_dentry);
++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ mode = S_IALLUGO;
++ err = vfs_symlink(hidden_sto_dir_dentry->d_inode,
++ hidden_sto_dentry, symname, mode);
++#else
++ err = vfs_symlink(hidden_sto_dir_dentry->d_inode,
++ hidden_sto_dentry,
++ symname);
++#endif
++ if (err || !hidden_sto_dentry->d_inode)
++ goto out_lock;
++
++ if(dtost(dentry) == DELETED) {
++ dtost(dentry) = DEL_REWRITTEN;
++ err = mini_fo_tri_interpose(NULL, hidden_sto_dentry, dentry, dir->i_sb, 0);
++ if(err)
++ goto out_lock;
++ } else if(dtost(dentry) == NON_EXISTANT) {
++ dtost(dentry) = CREATED;
++ err = mini_fo_tri_interpose(dtohd(dentry), hidden_sto_dentry, dentry, dir->i_sb, 0);
++ if(err)
++ goto out_lock;
++ }
++ fist_copy_attr_timesizes(dir, hidden_sto_dir_dentry->d_inode);
++
++ out_lock:
++ /* was: unlock_dir(hidden_sto_dir_dentry); */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++
++ dput(hidden_sto_dentry);
++ if (!dentry->d_inode)
++ d_drop(dentry);
++ out:
++ return err;
++}
++
++STATIC int
++mini_fo_mkdir(inode_t *dir, dentry_t *dentry, int mode)
++{
++ int err;
++
++ err = create_sto_dir(dentry, mode);
++
++ check_mini_fo_dentry(dentry);
++
++ return err;
++}
++
++
++STATIC int
++mini_fo_rmdir(inode_t *dir, dentry_t *dentry)
++{
++ int err = 0;
++
++ dentry_t *hidden_sto_dentry;
++ dentry_t *hidden_sto_dir_dentry;
++ dentry_t *meta_dentry;
++ inode_t *hidden_sto_dir = NULL;
++
++ check_mini_fo_dentry(dentry);
++ check_mini_fo_inode(dir);
++
++ dget(dentry);
++ if(dtopd(dentry)->state == MODIFIED) {
++ /* XXX: disabled, because it does not bother to check files on
++ * the original filesystem - just a hack, but better than simply
++ * removing it without testing */
++ err = -EINVAL;
++ goto out;
++
++ hidden_sto_dir = itohi2(dir);
++ hidden_sto_dentry = dtohd2(dentry);
++
++ /* was:hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++ /* Delete an old WOL file contained in the storage dir */
++ meta_dentry = lookup_one_len(META_FILENAME,
++ hidden_sto_dentry,
++ strlen(META_FILENAME));
++ if(meta_dentry->d_inode) {
++ err = vfs_unlink(hidden_sto_dentry->d_inode, meta_dentry);
++ dput(meta_dentry);
++ if(!err)
++ d_delete(meta_dentry);
++ }
++
++ err = vfs_rmdir(hidden_sto_dir, hidden_sto_dentry);
++ dput(hidden_sto_dentry);
++ if(!err)
++ d_delete(hidden_sto_dentry);
++
++ /* propagate number of hard-links */
++ dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink;
++
++ dput(dtohd(dentry));
++
++ dtohd(dentry) = NULL;
++ dtopd(dentry)->state = DELETED;
++
++ /* carefull with R files */
++ if( __meta_is_r_entry(dir,
++ dentry->d_name.name,
++ dentry->d_name.len) == 1) {
++ err = meta_remove_r_entry(dentry->d_parent,
++ dentry->d_name.name,
++ dentry->d_name.len);
++ if(err) {
++ printk(KERN_CRIT "mini_fo: rmdir: meta_remove_r_entry failed.\n");
++ goto out;
++ }
++ }
++ else {
++ /* ok, add deleted file to META */
++ meta_add_d_entry(dentry->d_parent,
++ dentry->d_name.name,
++ dentry->d_name.len);
++ }
++ /* was: unlock_dir(hidden_sto_dir_dentry); */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++ goto out;
++ }
++ else if(dtopd(dentry)->state == UNMODIFIED) {
++ /* XXX: simply adding it to the delete list here is fscking dangerous!
++ * as a temporary hack, i will disable rmdir on unmodified directories
++ * for now.
++ */
++ err = -EINVAL;
++ goto out;
++
++ err = get_neg_sto_dentry(dentry);
++ if(err) {
++ err = -EINVAL;
++ goto out;
++ }
++
++ /* dput base dentry, this will relase the inode and free the
++ * dentry, as we will never need it again. */
++ dput(dtohd(dentry));
++ dtohd(dentry) = NULL;
++ dtopd(dentry)->state = DELETED;
++
++ /* add deleted file to META-file */
++ meta_add_d_entry(dentry->d_parent,
++ dentry->d_name.name,
++ dentry->d_name.len);
++ goto out;
++ }
++ else if(dtopd(dentry)->state == CREATED) {
++ hidden_sto_dir = itohi2(dir);
++ hidden_sto_dentry = dtohd2(dentry);
++
++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry);*/
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++ /* Delete an old WOL file contained in the storage dir */
++ meta_dentry = lookup_one_len(META_FILENAME,
++ hidden_sto_dentry,
++ strlen(META_FILENAME));
++ if(meta_dentry->d_inode) {
++ /* is this necessary? dget(meta_dentry); */
++ err = vfs_unlink(hidden_sto_dentry->d_inode,
++ meta_dentry);
++ dput(meta_dentry);
++ if(!err)
++ d_delete(meta_dentry);
++ }
++
++ err = vfs_rmdir(hidden_sto_dir, hidden_sto_dentry);
++ dput(hidden_sto_dentry);
++ if(!err)
++ d_delete(hidden_sto_dentry);
++
++ /* propagate number of hard-links */
++ dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink;
++ dtopd(dentry)->state = NON_EXISTANT;
++
++ /* was: unlock_dir(hidden_sto_dir_dentry); */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++
++ goto out;
++ }
++ else if(dtopd(dentry)->state == DEL_REWRITTEN) {
++ hidden_sto_dir = itohi2(dir);
++ hidden_sto_dentry = dtohd2(dentry);
++
++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry);*/
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++ /* Delete an old WOL file contained in the storage dir */
++ meta_dentry = lookup_one_len(META_FILENAME,
++ hidden_sto_dentry,
++ strlen(META_FILENAME));
++ if(meta_dentry->d_inode) {
++ /* is this necessary? dget(meta_dentry); */
++ err = vfs_unlink(hidden_sto_dentry->d_inode,
++ meta_dentry);
++ dput(meta_dentry);
++ if(!err)
++ d_delete(meta_dentry);
++ }
++
++ err = vfs_rmdir(hidden_sto_dir, hidden_sto_dentry);
++ dput(hidden_sto_dentry);
++ if(!err)
++ d_delete(hidden_sto_dentry);
++
++ /* propagate number of hard-links */
++ dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink;
++ dtopd(dentry)->state = DELETED;
++ /* was: unlock_dir(hidden_sto_dir_dentry); */
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++ goto out;
++ }
++
++ printk(KERN_CRIT "mini_fo_rmdir: ERROR, invalid state detected.\n");
++
++ out:
++ if(!err) {
++ d_drop(dentry);
++ }
++
++ fist_copy_attr_times(dir, itohi2(dentry->d_parent->d_inode));
++ dput(dentry);
++
++ return err;
++}
++
++
++STATIC int
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++mini_fo_mknod(inode_t *dir, dentry_t *dentry, int mode, dev_t dev)
++#else
++mini_fo_mknod(inode_t *dir, dentry_t *dentry, int mode, int dev)
++#endif
++{
++ int err = 0;
++
++ check_mini_fo_dentry(dentry);
++
++ err = create_sto_nod(dentry, mode, dev);
++ if(err) {
++ printk(KERN_CRIT "mini_fo_mknod: creating sto nod failed.\n");
++ err = -EINVAL;
++ }
++
++ check_mini_fo_dentry(dentry);
++ return err;
++}
++
++
++STATIC int
++mini_fo_rename(inode_t *old_dir, dentry_t *old_dentry,
++ inode_t *new_dir, dentry_t *new_dentry)
++{
++ /* dispatch */
++ if(S_ISDIR(old_dentry->d_inode->i_mode))
++ return rename_directory(old_dir, old_dentry, new_dir, new_dentry);
++ return rename_nondir(old_dir, old_dentry, new_dir, new_dentry);
++
++}
++
++int rename_directory(inode_t *old_dir, dentry_t *old_dentry,
++ inode_t *new_dir, dentry_t *new_dentry)
++{
++ int err, bpath_len;
++ char *bpath;
++
++ dentry_t *hidden_old_dentry;
++ dentry_t *hidden_new_dentry;
++ dentry_t *hidden_old_dir_dentry;
++ dentry_t *hidden_new_dir_dentry;
++
++ err = 0;
++ bpath = NULL;
++ bpath_len = 0;
++
++ /* this is a test, chuck out if it works */
++ if(!(dtopd(new_dentry)->state == DELETED ||
++ dtopd(new_dentry)->state == NON_EXISTANT)) {
++ printk(KERN_CRIT "mini_fo: rename_directory: \
++ uh, ah, new_dentry not negative.\n");
++ /* return -1; */
++ }
++
++ /* state = UNMODIFIED */
++ if(dtopd(old_dentry)->state == UNMODIFIED) {
++ err = dir_unmod_to_mod(old_dentry);
++ if (err)
++ goto out;
++ }
++
++ /* state = MODIFIED */
++ if(dtopd(old_dentry)->state == MODIFIED) {
++ bpath = meta_check_r_entry(old_dentry->d_parent,
++ old_dentry->d_name.name,
++ old_dentry->d_name.len);
++ if(bpath) {
++ err = meta_remove_r_entry(old_dentry->d_parent,
++ old_dentry->d_name.name,
++ old_dentry->d_name.len);
++ if(err) {
++ printk(KERN_CRIT "mini_fo: rename_directory:\
++ meta_remove_r_entry \
++ failed.\n");
++ goto out;
++ }
++ err = meta_add_r_entry(new_dentry->d_parent,
++ bpath,
++ strlen(bpath),
++ new_dentry->d_name.name,
++ new_dentry->d_name.len);
++ kfree(bpath);
++ }
++ else {/* wol it */
++ err = meta_add_d_entry(old_dentry->d_parent,
++ old_dentry->d_name.name,
++ old_dentry->d_name.len);
++ if (err)
++ goto out;
++ /* put it on rename list */
++ err = get_mini_fo_bpath(old_dentry,
++ &bpath,
++ &bpath_len);
++ if (err)
++ goto out;
++ err = meta_add_r_entry(new_dentry->d_parent,
++ bpath, bpath_len,
++ new_dentry->d_name.name,
++ new_dentry->d_name.len);
++ if (err)
++ goto out;
++ }
++ /* no state change, MODIFIED stays MODIFIED */
++ }
++ /* state = CREATED */
++ if(dtopd(old_dentry)->state == CREATED ||
++ dtopd(old_dentry)->state == DEL_REWRITTEN) {
++ if(dtohd(old_dentry))
++ dput(dtohd(old_dentry));
++
++ if(dtopd(new_dentry)->state == DELETED) {
++ dtopd(old_dentry)->state = DEL_REWRITTEN;
++ dtohd(old_dentry) = NULL;
++ }
++ else if(dtopd(new_dentry)->state == NON_EXISTANT) {
++ dtopd(old_dentry)->state = CREATED;
++ /* steal new dentry's neg. base dentry */
++ dtohd(old_dentry) = dtohd(new_dentry);
++ dtohd(new_dentry) = NULL;
++ }
++ }
++ if(dtopd(new_dentry)->state == UNMODIFIED ||
++ dtopd(new_dentry)->state == NON_EXISTANT) {
++ err = get_neg_sto_dentry(new_dentry);
++ if(err)
++ goto out;
++ }
++
++ /* now move sto file */
++ hidden_old_dentry = dtohd2(old_dentry);
++ hidden_new_dentry = dtohd2(new_dentry);
++
++ dget(hidden_old_dentry);
++ dget(hidden_new_dentry);
++
++ hidden_old_dir_dentry = dget(hidden_old_dentry->d_parent);
++ hidden_new_dir_dentry = dget(hidden_new_dentry->d_parent);
++ double_lock(hidden_old_dir_dentry, hidden_new_dir_dentry);
++
++ err = vfs_rename(hidden_old_dir_dentry->d_inode, hidden_old_dentry,
++ hidden_new_dir_dentry->d_inode, hidden_new_dentry);
++ if(err)
++ goto out_lock;
++
++ fist_copy_attr_all(new_dir, hidden_new_dir_dentry->d_inode);
++ if (new_dir != old_dir)
++ fist_copy_attr_all(old_dir,
++ hidden_old_dir_dentry->d_inode);
++
++ out_lock:
++ /* double_unlock will dput the new/old parent dentries
++ * whose refcnts were incremented via get_parent above. */
++ double_unlock(hidden_old_dir_dentry, hidden_new_dir_dentry);
++ dput(hidden_new_dentry);
++ dput(hidden_old_dentry);
++
++ out:
++ return err;
++}
++
++int rename_nondir(inode_t *old_dir, dentry_t *old_dentry,
++ inode_t *new_dir, dentry_t *new_dentry)
++{
++ int err=0;
++
++ check_mini_fo_dentry(old_dentry);
++ check_mini_fo_dentry(new_dentry);
++ check_mini_fo_inode(old_dir);
++ check_mini_fo_inode(new_dir);
++
++ /* state: UNMODIFIED */
++ if(dtost(old_dentry) == UNMODIFIED) {
++ err = nondir_unmod_to_mod(old_dentry, 1);
++ if(err) {
++ err = -EINVAL;
++ goto out;
++ }
++ }
++
++ /* the easy states */
++ if(exists_in_storage(old_dentry)) {
++
++ dentry_t *hidden_old_dentry;
++ dentry_t *hidden_new_dentry;
++ dentry_t *hidden_old_dir_dentry;
++ dentry_t *hidden_new_dir_dentry;
++
++ /* if old file is MODIFIED, add it to the deleted_list */
++ if(dtopd(old_dentry)->state == MODIFIED) {
++ meta_add_d_entry(old_dentry->d_parent,
++ old_dentry->d_name.name,
++ old_dentry->d_name.len);
++
++ dput(dtohd(old_dentry));
++ }
++ /* if old file is CREATED, we only release the base dentry */
++ if(dtopd(old_dentry)->state == CREATED) {
++ if(dtohd(old_dentry))
++ dput(dtohd(old_dentry));
++ }
++
++ /* now setup the new states (depends on new_dentry state) */
++ /* new dentry state = MODIFIED */
++ if(dtopd(new_dentry)->state == MODIFIED) {
++ meta_add_d_entry(new_dentry->d_parent,
++ new_dentry->d_name.name,
++ new_dentry->d_name.len);
++
++ /* new dentry will be d_put'ed later by the vfs
++ * so don't do it here
++ * dput(dtohd(new_dentry));
++ */
++ dtohd(old_dentry) = NULL;
++ dtopd(old_dentry)->state = DEL_REWRITTEN;
++ }
++ /* new dentry state = UNMODIFIED */
++ else if(dtopd(new_dentry)->state == UNMODIFIED) {
++ if(get_neg_sto_dentry(new_dentry))
++ return -EINVAL;
++
++ meta_add_d_entry(new_dentry->d_parent,
++ new_dentry->d_name.name,
++ new_dentry->d_name.len);
++
++ /* is this right??? */
++ /*dput(dtohd(new_dentry));*/
++ dtohd(old_dentry) = NULL;
++ dtopd(old_dentry)->state = DEL_REWRITTEN;
++ }
++ /* new dentry state = CREATED */
++ else if(dtopd(new_dentry)->state == CREATED) {
++ /* we keep the neg. base dentry (if exists) */
++ dtohd(old_dentry) = dtohd(new_dentry);
++ /* ...and set it to Null, or we'll get
++ * dcache.c:345 if it gets dput twice... */
++ dtohd(new_dentry) = NULL;
++ dtopd(old_dentry)->state = CREATED;
++ }
++ /* new dentry state = NON_EXISTANT */
++ else if(dtopd(new_dentry)->state == NON_EXISTANT) {
++ if(get_neg_sto_dentry(new_dentry))
++ return -EINVAL;
++
++ /* we keep the neg. base dentry (if exists) */
++ dtohd(old_dentry) = dtohd(new_dentry);
++ /* ...and set it to Null, or we'll get
++ * Dr. dcache.c:345 if it gets dput twice... */
++ dtohd(new_dentry) = NULL;
++ dtopd(old_dentry)->state = CREATED;
++ }
++ /* new dentry state = DEL_REWRITTEN or DELETED */
++ else if(dtopd(new_dentry)->state == DEL_REWRITTEN ||
++ dtopd(new_dentry)->state == DELETED) {
++ dtohd(old_dentry) = NULL;
++ dtopd(old_dentry)->state = DEL_REWRITTEN;
++ }
++ else { /* not possible, uhh, ahh */
++ printk(KERN_CRIT
++ "mini_fo: rename_reg_file: invalid state detected [1].\n");
++ return -1;
++ }
++
++ /* now we definitely have a sto file */
++ hidden_old_dentry = dtohd2(old_dentry);
++ hidden_new_dentry = dtohd2(new_dentry);
++
++ dget(hidden_old_dentry);
++ dget(hidden_new_dentry);
++
++ hidden_old_dir_dentry = dget(hidden_old_dentry->d_parent);
++ hidden_new_dir_dentry = dget(hidden_new_dentry->d_parent);
++ double_lock(hidden_old_dir_dentry, hidden_new_dir_dentry);
++
++ err = vfs_rename(hidden_old_dir_dentry->d_inode,
++ hidden_old_dentry,
++ hidden_new_dir_dentry->d_inode,
++ hidden_new_dentry);
++ if(err)
++ goto out_lock;
++
++ fist_copy_attr_all(new_dir, hidden_new_dir_dentry->d_inode);
++ if (new_dir != old_dir)
++ fist_copy_attr_all(old_dir, hidden_old_dir_dentry->d_inode);
++
++ out_lock:
++ /* double_unlock will dput the new/old parent dentries
++ * whose refcnts were incremented via get_parent above.
++ */
++ double_unlock(hidden_old_dir_dentry, hidden_new_dir_dentry);
++ dput(hidden_new_dentry);
++ dput(hidden_old_dentry);
++ out:
++ return err;
++ }
++ else { /* invalid state */
++ printk(KERN_CRIT "mini_fo: rename_reg_file: ERROR: invalid state detected [2].\n");
++ return -1;
++ }
++}
++
++
++STATIC int
++mini_fo_readlink(dentry_t *dentry, char *buf, int bufsiz)
++{
++ int err=0;
++ dentry_t *hidden_dentry = NULL;
++
++ if(dtohd2(dentry) && dtohd2(dentry)->d_inode) {
++ hidden_dentry = dtohd2(dentry);
++ } else if(dtohd(dentry) && dtohd(dentry)->d_inode) {
++ hidden_dentry = dtohd(dentry);
++ } else {
++ goto out;
++ }
++
++ if (!hidden_dentry->d_inode->i_op ||
++ !hidden_dentry->d_inode->i_op->readlink) {
++ err = -EINVAL; goto out;
++ }
++
++ err = hidden_dentry->d_inode->i_op->readlink(hidden_dentry,
++ buf,
++ bufsiz);
++ if (err > 0)
++ fist_copy_attr_atime(dentry->d_inode, hidden_dentry->d_inode);
++
++ out:
++ return err;
++}
++
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,13)
++static int mini_fo_follow_link(dentry_t *dentry, struct nameidata *nd)
++#else
++static void* mini_fo_follow_link(dentry_t *dentry, struct nameidata *nd)
++#endif
++{
++ char *buf;
++ int len = PAGE_SIZE, err;
++ mm_segment_t old_fs;
++
++ /* in 2.6 this is freed by mini_fo_put_link called by __do_follow_link */
++ buf = kmalloc(len, GFP_KERNEL);
++ if (!buf) {
++ err = -ENOMEM;
++ goto out;
++ }
++
++ /* read the symlink, and then we will follow it */
++ old_fs = get_fs();
++ set_fs(KERNEL_DS);
++ err = dentry->d_inode->i_op->readlink(dentry, buf, len);
++ set_fs(old_fs);
++ if (err < 0) {
++ kfree(buf);
++ buf = NULL;
++ goto out;
++ }
++ buf[err] = 0;
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ nd_set_link(nd, buf);
++ err = 0;
++#else
++ err = vfs_follow_link(nd, buf);
++#endif
++
++ out:
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ kfree(buf);
++#endif
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,13)
++ return err;
++#else
++ return ERR_PTR(err);
++#endif
++}
++
++STATIC
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,13)
++void mini_fo_put_link(struct dentry *dentry, struct nameidata *nd)
++#else
++void mini_fo_put_link(struct dentry *dentry, struct nameidata *nd, void *cookie)
++#endif
++{
++ char *link;
++ link = nd_get_link(nd);
++ kfree(link);
++}
++#endif
++
++STATIC int
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++mini_fo_permission(inode_t *inode, int mask, struct nameidata *nd)
++#else
++mini_fo_permission(inode_t *inode, int mask)
++#endif
++{
++ inode_t *hidden_inode;
++ int mode;
++ int err;
++
++ if(itohi2(inode)) {
++ hidden_inode = itohi2(inode);
++ } else {
++ hidden_inode = itohi(inode);
++ }
++ mode = inode->i_mode;
++
++ /* not really needed, as permission handles everything:
++ * err = vfs_permission(inode, mask);
++ * if (err)
++ * goto out;
++ */
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ err = permission(hidden_inode, mask, nd);
++#else
++ err = permission(hidden_inode, mask);
++#endif
++
++ /* out: */
++ return err;
++}
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++STATIC int
++mini_fo_inode_revalidate(dentry_t *dentry)
++{
++ int err = 0;
++ dentry_t *hidden_dentry;
++ inode_t *hidden_inode;
++
++ ASSERT(dentry->d_inode);
++ ASSERT(itopd(dentry->d_inode));
++
++ if(itohi2(dentry->d_inode)) {
++ hidden_dentry = dtohd2(dentry);
++ hidden_inode = hidden_dentry->d_inode;
++ } else if(itohi(dentry->d_inode)) {
++ hidden_dentry = dtohd(dentry);
++ hidden_inode = hidden_dentry->d_inode;
++ } else {
++ printk(KERN_CRIT "mini_fo_inode_revalidate: ERROR, invalid state detected.\n");
++ err = -ENOENT;
++ goto out;
++ }
++ if (hidden_inode && hidden_inode->i_op && hidden_inode->i_op->revalidate){
++ err = hidden_inode->i_op->revalidate(hidden_dentry);
++ if (err)
++ goto out;
++ }
++ fist_copy_attr_all(dentry->d_inode, hidden_inode);
++ out:
++ return err;
++}
++#endif
++
++STATIC int
++mini_fo_setattr(dentry_t *dentry, struct iattr *ia)
++{
++ int err = 0;
++
++ check_mini_fo_dentry(dentry);
++
++ if(!is_mini_fo_existant(dentry)) {
++ printk(KERN_CRIT "mini_fo_setattr: ERROR, invalid state detected [1].\n");
++ goto out;
++ }
++
++ if(dtost(dentry) == UNMODIFIED) {
++ if(!IS_COPY_FLAG(ia->ia_valid))
++ goto out; /* we ignore these changes to base */
++
++ if(S_ISDIR(dentry->d_inode->i_mode)) {
++ err = dir_unmod_to_mod(dentry);
++ } else {
++ /* we copy contents if file is not beeing truncated */
++ if(S_ISREG(dentry->d_inode->i_mode) &&
++ !(ia->ia_size == 0 && (ia->ia_valid & ATTR_SIZE))) {
++ err = nondir_unmod_to_mod(dentry, 1);
++ } else
++ err = nondir_unmod_to_mod(dentry, 0);
++ }
++ if(err) {
++ err = -EINVAL;
++ printk(KERN_CRIT "mini_fo_setattr: ERROR changing states.\n");
++ goto out;
++ }
++ }
++ if(!exists_in_storage(dentry)) {
++ printk(KERN_CRIT "mini_fo_setattr: ERROR, invalid state detected [2].\n");
++ err = -EINVAL;
++ goto out;
++ }
++ ASSERT(dentry->d_inode);
++ ASSERT(dtohd2(dentry));
++ ASSERT(itopd(dentry->d_inode));
++ ASSERT(itohi2(dentry->d_inode));
++
++ err = notify_change(dtohd2(dentry), ia);
++ fist_copy_attr_all(dentry->d_inode, itohi2(dentry->d_inode));
++ out:
++ return err;
++}
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++STATIC int
++mini_fo_getattr(struct vfsmount *mnt, struct dentry *dentry, struct kstat *stat)
++{
++ int err = 0;
++ dentry_t *hidden_dentry;
++
++ ASSERT(dentry->d_inode);
++ ASSERT(itopd(dentry->d_inode));
++
++ if(itohi2(dentry->d_inode)) {
++ hidden_dentry = dtohd2(dentry);
++ } else if(itohi(dentry->d_inode)) {
++ hidden_dentry = dtohd(dentry);
++ } else {
++ printk(KERN_CRIT "mini_fo_getattr: ERROR, invalid state detected.\n");
++ err = -ENOENT;
++ goto out;
++ }
++ fist_copy_attr_all(dentry->d_inode, hidden_dentry->d_inode);
++
++ ASSERT(hidden_dentry);
++ ASSERT(hidden_dentry->d_inode);
++ ASSERT(hidden_dentry->d_inode->i_op);
++
++ generic_fillattr(dentry->d_inode, stat);
++ if (!stat->blksize) {
++ struct super_block *s = hidden_dentry->d_inode->i_sb;
++ unsigned blocks;
++ blocks = (stat->size+s->s_blocksize-1) >> s->s_blocksize_bits;
++ stat->blocks = (s->s_blocksize / 512) * blocks;
++ stat->blksize = s->s_blocksize;
++ }
++ out:
++ return err;
++}
++#endif
++
++#if defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20))
++#if 0 /* no xattr_alloc() and xattr_free() */
++/* This is lifted from fs/xattr.c */
++static void *
++xattr_alloc(size_t size, size_t limit)
++{
++ void *ptr;
++
++ if (size > limit)
++ return ERR_PTR(-E2BIG);
++
++ if (!size) /* size request, no buffer is needed */
++ return NULL;
++ else if (size <= PAGE_SIZE)
++ ptr = kmalloc((unsigned long) size, GFP_KERNEL);
++ else
++ ptr = vmalloc((unsigned long) size);
++ if (!ptr)
++ return ERR_PTR(-ENOMEM);
++ return ptr;
++}
++
++static void
++xattr_free(void *ptr, size_t size)
++{
++ if (!size) /* size request, no buffer was needed */
++ return;
++ else if (size <= PAGE_SIZE)
++ kfree(ptr);
++ else
++ vfree(ptr);
++}
++#endif /* no xattr_alloc() and xattr_free() */
++
++/* BKL held by caller.
++ * dentry->d_inode->i_sem down
++ */
++STATIC int
++mini_fo_getxattr(struct dentry *dentry, const char *name, void *value, size_t size) {
++ struct dentry *hidden_dentry = NULL;
++ int err = -EOPNOTSUPP;
++ /* Define these anyway so we don't need as much ifdef'ed code. */
++ char *encoded_name = NULL;
++ char *encoded_value = NULL;
++
++ check_mini_fo_dentry(dentry);
++
++ if(exists_in_storage(dentry))
++ hidden_dentry = dtohd2(dentry);
++ else
++ hidden_dentry = dtohd(dentry);
++
++ ASSERT(hidden_dentry);
++ ASSERT(hidden_dentry->d_inode);
++ ASSERT(hidden_dentry->d_inode->i_op);
++
++ if (hidden_dentry->d_inode->i_op->getxattr) {
++ encoded_name = (char *)name;
++ encoded_value = (char *)value;
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_dentry->d_inode->i_sem);
++#endif
++ /* lock_kernel() already done by caller. */
++ err = hidden_dentry->d_inode->i_op->getxattr(hidden_dentry, encoded_name, encoded_value, size);
++ /* unlock_kernel() will be done by caller. */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_dentry->d_inode->i_sem);
++#endif
++ }
++ return err;
++}
++
++/* BKL held by caller.
++ * dentry->d_inode->i_sem down
++ */
++STATIC int
++#if ((LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,21) \
++ && LINUX_VERSION_CODE <= KERNEL_VERSION(2,4,23)) \
++ || LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0))
++mini_fo_setxattr(struct dentry *dentry, const char *name,
++ const void *value, size_t size, int flags)
++#else
++mini_fo_setxattr(struct dentry *dentry, const char *name,
++ void *value, size_t size, int flags)
++#endif
++
++{
++ struct dentry *hidden_dentry = NULL;
++ int err = -EOPNOTSUPP;
++
++ /* Define these anyway, so we don't have as much ifdef'ed code. */
++ char *encoded_value = NULL;
++ char *encoded_name = NULL;
++
++ check_mini_fo_dentry(dentry);
++
++ if(exists_in_storage(dentry))
++ hidden_dentry = dtohd2(dentry);
++ else
++ hidden_dentry = dtohd(dentry);
++
++ ASSERT(hidden_dentry);
++ ASSERT(hidden_dentry->d_inode);
++ ASSERT(hidden_dentry->d_inode->i_op);
++
++ if (hidden_dentry->d_inode->i_op->setxattr) {
++ encoded_name = (char *)name;
++ encoded_value = (char *)value;
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_dentry->d_inode->i_sem);
++#endif
++ /* lock_kernel() already done by caller. */
++ err = hidden_dentry->d_inode->i_op->setxattr(hidden_dentry, encoded_name, encoded_value, size, flags);
++ /* unlock_kernel() will be done by caller. */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_dentry->d_inode->i_sem);
++#endif
++ }
++ return err;
++}
++
++/* BKL held by caller.
++ * dentry->d_inode->i_sem down
++ */
++STATIC int
++mini_fo_removexattr(struct dentry *dentry, const char *name) {
++ struct dentry *hidden_dentry = NULL;
++ int err = -EOPNOTSUPP;
++ char *encoded_name;
++
++ check_mini_fo_dentry(dentry);
++
++ if(exists_in_storage(dentry))
++ hidden_dentry = dtohd2(dentry);
++ else
++ hidden_dentry = dtohd(dentry);
++
++ ASSERT(hidden_dentry);
++ ASSERT(hidden_dentry->d_inode);
++ ASSERT(hidden_dentry->d_inode->i_op);
++
++ if (hidden_dentry->d_inode->i_op->removexattr) {
++ encoded_name = (char *)name;
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_dentry->d_inode->i_sem);
++#endif
++ /* lock_kernel() already done by caller. */
++ err = hidden_dentry->d_inode->i_op->removexattr(hidden_dentry, encoded_name);
++ /* unlock_kernel() will be done by caller. */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_dentry->d_inode->i_sem);
++#endif
++ }
++ return err;
++}
++
++/* BKL held by caller.
++ * dentry->d_inode->i_sem down
++ */
++STATIC int
++mini_fo_listxattr(struct dentry *dentry, char *list, size_t size) {
++ struct dentry *hidden_dentry = NULL;
++ int err = -EOPNOTSUPP;
++ char *encoded_list = NULL;
++
++ check_mini_fo_dentry(dentry);
++
++ if(exists_in_storage(dentry))
++ hidden_dentry = dtohd2(dentry);
++ else
++ hidden_dentry = dtohd(dentry);
++
++ ASSERT(hidden_dentry);
++ ASSERT(hidden_dentry->d_inode);
++ ASSERT(hidden_dentry->d_inode->i_op);
++
++ if (hidden_dentry->d_inode->i_op->listxattr) {
++ encoded_list = list;
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_dentry->d_inode->i_sem);
++#endif
++ /* lock_kernel() already done by caller. */
++ err = hidden_dentry->d_inode->i_op->listxattr(hidden_dentry, encoded_list, size);
++ /* unlock_kernel() will be done by caller. */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_dentry->d_inode->i_sem);
++#endif
++ }
++ return err;
++}
++# endif /* defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)) */
++
++struct inode_operations mini_fo_symlink_iops =
++ {
++ readlink: mini_fo_readlink,
++ follow_link: mini_fo_follow_link,
++ /* mk: permission: mini_fo_permission, */
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ revalidate: mini_fo_inode_revalidate,
++#endif
++ setattr: mini_fo_setattr,
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ getattr: mini_fo_getattr,
++ put_link: mini_fo_put_link,
++#endif
++
++#if defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20))
++ setxattr: mini_fo_setxattr,
++ getxattr: mini_fo_getxattr,
++ listxattr: mini_fo_listxattr,
++ removexattr: mini_fo_removexattr
++# endif /* defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20)) */
++ };
++
++struct inode_operations mini_fo_dir_iops =
++ {
++ create: mini_fo_create,
++ lookup: mini_fo_lookup,
++ link: mini_fo_link,
++ unlink: mini_fo_unlink,
++ symlink: mini_fo_symlink,
++ mkdir: mini_fo_mkdir,
++ rmdir: mini_fo_rmdir,
++ mknod: mini_fo_mknod,
++ rename: mini_fo_rename,
++ /* no readlink/follow_link for non-symlinks */
++ // off because we have setattr
++ // truncate: mini_fo_truncate,
++ /* mk:permission: mini_fo_permission, */
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ revalidate: mini_fo_inode_revalidate,
++#endif
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ getattr: mini_fo_getattr,
++#endif
++ setattr: mini_fo_setattr,
++#if defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20))
++ setxattr: mini_fo_setxattr,
++ getxattr: mini_fo_getxattr,
++ listxattr: mini_fo_listxattr,
++ removexattr: mini_fo_removexattr
++# endif /* XATTR && LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) */
++ };
++
++struct inode_operations mini_fo_main_iops =
++ {
++ /* permission: mini_fo_permission, */
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ revalidate: mini_fo_inode_revalidate,
++#endif
++ setattr: mini_fo_setattr,
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ getattr: mini_fo_getattr,
++#endif
++#if defined(XATTR) && (LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20))
++ setxattr: mini_fo_setxattr,
++ getxattr: mini_fo_getxattr,
++ listxattr: mini_fo_listxattr,
++ removexattr: mini_fo_removexattr
++# endif /* XATTR && LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,20) */
++ };
+Index: linux-2.6.23-rc6/fs/mini_fo/main.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/main.c 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,423 @@
++/*
++ * Copyright (c) 1997-2003 Erez Zadok
++ * Copyright (c) 2001-2003 Stony Brook University
++ *
++ * For specific licensing information, see the COPYING file distributed with
++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING.
++ *
++ * This Copyright notice must be kept intact and distributed with all
++ * fistgen sources INCLUDING sources generated by fistgen.
++ */
++/*
++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++/*
++ * $Id$
++ */
++
++#ifdef HAVE_CONFIG_H
++# include <config.h>
++#endif
++
++#include "fist.h"
++#include "mini_fo.h"
++#include <linux/module.h>
++
++/* This definition must only appear after we include <linux/module.h> */
++#ifndef MODULE_LICENSE
++# define MODULE_LICENSE(bison)
++#endif /* not MODULE_LICENSE */
++
++/*
++ * This is the mini_fo tri interpose function, which extends the
++ * functionality of the regular interpose by interposing a higher
++ * level inode on top of two lower level ones: the base filesystem
++ * inode and the storage filesystem inode.
++ *
++ * sb we pass is mini_fo's super_block
++ */
++int
++mini_fo_tri_interpose(dentry_t *hidden_dentry,
++ dentry_t *hidden_sto_dentry,
++ dentry_t *dentry, super_block_t *sb, int flag)
++{
++ inode_t *hidden_inode = NULL;
++ inode_t *hidden_sto_inode = NULL; /* store corresponding storage inode */
++ int err = 0;
++ inode_t *inode;
++
++ /* Pointer to hidden_sto_inode if exists, else to hidden_inode.
++ * This is used to copy the attributes of the correct inode. */
++ inode_t *master_inode;
++
++ if(hidden_dentry)
++ hidden_inode = hidden_dentry->d_inode;
++ if(hidden_sto_dentry)
++ hidden_sto_inode = hidden_sto_dentry->d_inode;
++
++ ASSERT(dentry->d_inode == NULL);
++
++ /* mk: One of the inodes associated with the dentrys is likely to
++ * be NULL, so carefull:
++ */
++ ASSERT((hidden_inode != NULL) || (hidden_sto_inode != NULL));
++
++ if(hidden_sto_inode)
++ master_inode = hidden_sto_inode;
++ else
++ master_inode = hidden_inode;
++
++ /*
++ * We allocate our new inode below, by calling iget.
++ * iget will call our read_inode which will initialize some
++ * of the new inode's fields
++ */
++
++ /*
++ * original: inode = iget(sb, hidden_inode->i_ino);
++ */
++ inode = iget(sb, iunique(sb, 25));
++ if (!inode) {
++ err = -EACCES; /* should be impossible??? */
++ goto out;
++ }
++
++ /*
++ * interpose the inode if not already interposed
++ * this is possible if the inode is being reused
++ * XXX: what happens if we get_empty_inode() but there's another already?
++ * for now, ASSERT() that this can't happen; fix later.
++ */
++ if (itohi(inode) != NULL) {
++ printk(KERN_CRIT "mini_fo_tri_interpose: itohi(inode) != NULL.\n");
++ }
++ if (itohi2(inode) != NULL) {
++ printk(KERN_CRIT "mini_fo_tri_interpose: itohi2(inode) != NULL.\n");
++ }
++
++ /* mk: Carefull, igrab can't handle NULL inodes (ok, why should it?), so
++ * we need to check here:
++ */
++ if(hidden_inode)
++ itohi(inode) = igrab(hidden_inode);
++ else
++ itohi(inode) = NULL;
++
++ if(hidden_sto_inode)
++ itohi2(inode) = igrab(hidden_sto_inode);
++ else
++ itohi2(inode) = NULL;
++
++
++ /* Use different set of inode ops for symlinks & directories*/
++ if (S_ISLNK(master_inode->i_mode))
++ inode->i_op = &mini_fo_symlink_iops;
++ else if (S_ISDIR(master_inode->i_mode))
++ inode->i_op = &mini_fo_dir_iops;
++
++ /* Use different set of file ops for directories */
++ if (S_ISDIR(master_inode->i_mode))
++ inode->i_fop = &mini_fo_dir_fops;
++
++ /* properly initialize special inodes */
++ if (S_ISBLK(master_inode->i_mode) || S_ISCHR(master_inode->i_mode) ||
++ S_ISFIFO(master_inode->i_mode) || S_ISSOCK(master_inode->i_mode)) {
++ init_special_inode(inode, master_inode->i_mode, master_inode->i_rdev);
++ }
++
++ /* Fix our inode's address operations to that of the lower inode */
++ if (inode->i_mapping->a_ops != master_inode->i_mapping->a_ops) {
++ inode->i_mapping->a_ops = master_inode->i_mapping->a_ops;
++ }
++
++ /* only (our) lookup wants to do a d_add */
++ if (flag)
++ d_add(dentry, inode);
++ else
++ d_instantiate(dentry, inode);
++
++ ASSERT(dtopd(dentry) != NULL);
++
++ /* all well, copy inode attributes */
++ fist_copy_attr_all(inode, master_inode);
++
++ out:
++ return err;
++}
++
++/* parse mount options "base=" and "sto=" */
++dentry_t *
++mini_fo_parse_options(super_block_t *sb, char *options)
++{
++ dentry_t *hidden_root = ERR_PTR(-EINVAL);
++ dentry_t *hidden_root2 = ERR_PTR(-EINVAL);
++ struct nameidata nd, nd2;
++ char *name, *tmp, *end;
++ int err = 0;
++
++ /* We don't want to go off the end of our arguments later on. */
++ for (end = options; *end; end++);
++
++ while (options < end) {
++ tmp = options;
++ while (*tmp && *tmp != ',')
++ tmp++;
++ *tmp = '\0';
++ if (!strncmp("base=", options, 5)) {
++ name = options + 5;
++ printk(KERN_INFO "mini_fo: using base directory: %s\n", name);
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ if (path_init(name, LOOKUP_FOLLOW, &nd))
++ err = path_walk(name, &nd);
++#else
++ err = path_lookup(name, LOOKUP_FOLLOW, &nd);
++#endif
++ if (err) {
++ printk(KERN_CRIT "mini_fo: error accessing hidden directory '%s'\n", name);
++ hidden_root = ERR_PTR(err);
++ goto out;
++ }
++ hidden_root = nd.dentry;
++ stopd(sb)->base_dir_dentry = nd.dentry;
++ stopd(sb)->hidden_mnt = nd.mnt;
++
++ } else if(!strncmp("sto=", options, 4)) {
++ /* parse the storage dir */
++ name = options + 4;
++ printk(KERN_INFO "mini_fo: using storage directory: %s\n", name);
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ if(path_init(name, LOOKUP_FOLLOW, &nd2))
++ err = path_walk(name, &nd2);
++#else
++ err = path_lookup(name, LOOKUP_FOLLOW, &nd2);
++#endif
++ if(err) {
++ printk(KERN_CRIT "mini_fo: error accessing hidden storage directory '%s'\n", name);
++
++ hidden_root2 = ERR_PTR(err);
++ goto out;
++ }
++ hidden_root2 = nd2.dentry;
++ stopd(sb)->storage_dir_dentry = nd2.dentry;
++ stopd(sb)->hidden_mnt2 = nd2.mnt;
++ stohs2(sb) = hidden_root2->d_sb;
++
++ /* validate storage dir, this is done in
++ * mini_fo_read_super for the base directory.
++ */
++ if (IS_ERR(hidden_root2)) {
++ printk(KERN_WARNING "mini_fo_parse_options: storage dentry lookup failed (err = %ld)\n", PTR_ERR(hidden_root2));
++ goto out;
++ }
++ if (!hidden_root2->d_inode) {
++ printk(KERN_WARNING "mini_fo_parse_options: no storage dir to interpose on.\n");
++ goto out;
++ }
++ stohs2(sb) = hidden_root2->d_sb;
++ } else {
++ printk(KERN_WARNING "mini_fo: unrecognized option '%s'\n", options);
++ hidden_root = ERR_PTR(-EINVAL);
++ goto out;
++ }
++ options = tmp + 1;
++ }
++
++ out:
++ if(IS_ERR(hidden_root2))
++ return hidden_root2;
++ return hidden_root;
++}
++
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++static int
++#else
++super_block_t *
++#endif
++mini_fo_read_super(super_block_t *sb, void *raw_data, int silent)
++{
++ dentry_t *hidden_root;
++ int err = 0;
++
++ if (!raw_data) {
++ printk(KERN_WARNING "mini_fo_read_super: missing argument\n");
++ err = -EINVAL;
++ goto out;
++ }
++ /*
++ * Allocate superblock private data
++ */
++ __stopd(sb) = kmalloc(sizeof(struct mini_fo_sb_info), GFP_KERNEL);
++ if (!stopd(sb)) {
++ printk(KERN_WARNING "%s: out of memory\n", __FUNCTION__);
++ err = -ENOMEM;
++ goto out;
++ }
++ stohs(sb) = NULL;
++
++ hidden_root = mini_fo_parse_options(sb, raw_data);
++ if (IS_ERR(hidden_root)) {
++ printk(KERN_WARNING "mini_fo_read_super: lookup_dentry failed (err = %ld)\n", PTR_ERR(hidden_root));
++ err = PTR_ERR(hidden_root);
++ goto out_free;
++ }
++ if (!hidden_root->d_inode) {
++ printk(KERN_WARNING "mini_fo_read_super: no directory to interpose on\n");
++ goto out_free;
++ }
++ stohs(sb) = hidden_root->d_sb;
++
++ /*
++ * Linux 2.4.2-ac3 and beyond has code in
++ * mm/filemap.c:generic_file_write() that requires sb->s_maxbytes
++ * to be populated. If not set, all write()s under that sb will
++ * return 0.
++ *
++ * Linux 2.4.4+ automatically sets s_maxbytes to MAX_NON_LFS;
++ * the filesystem should override it only if it supports LFS.
++ */
++ /* non-SCA code is good to go with LFS */
++ sb->s_maxbytes = hidden_root->d_sb->s_maxbytes;
++
++ sb->s_op = &mini_fo_sops;
++ /*
++ * we can't use d_alloc_root if we want to use
++ * our own interpose function unchanged,
++ * so we simply replicate *most* of the code in d_alloc_root here
++ */
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ sb->s_root = d_alloc(NULL, &(const struct qstr) { "/", 1, 0 });
++#else
++ sb->s_root = d_alloc(NULL, &(const struct qstr){hash: 0, name: "/", len : 1});
++#endif
++ if (IS_ERR(sb->s_root)) {
++ printk(KERN_WARNING "mini_fo_read_super: d_alloc failed\n");
++ err = -ENOMEM;
++ goto out_dput;
++ }
++
++ sb->s_root->d_op = &mini_fo_dops;
++ sb->s_root->d_sb = sb;
++ sb->s_root->d_parent = sb->s_root;
++
++ /* link the upper and lower dentries */
++ __dtopd(sb->s_root) = (struct mini_fo_dentry_info *)
++ kmalloc(sizeof(struct mini_fo_dentry_info), GFP_KERNEL);
++ if (!dtopd(sb->s_root)) {
++ err = -ENOMEM;
++ goto out_dput2;
++ }
++ dtopd(sb->s_root)->state = MODIFIED;
++ dtohd(sb->s_root) = hidden_root;
++
++ /* fanout relevant, interpose on storage root dentry too */
++ dtohd2(sb->s_root) = stopd(sb)->storage_dir_dentry;
++
++ /* ...and call tri-interpose to interpose root dir inodes
++ * if (mini_fo_interpose(hidden_root, sb->s_root, sb, 0))
++ */
++ if(mini_fo_tri_interpose(hidden_root, dtohd2(sb->s_root), sb->s_root, sb, 0))
++ goto out_dput2;
++
++ /* initalize the wol list */
++ itopd(sb->s_root->d_inode)->deleted_list_size = -1;
++ itopd(sb->s_root->d_inode)->renamed_list_size = -1;
++ meta_build_lists(sb->s_root);
++
++ goto out;
++
++ out_dput2:
++ dput(sb->s_root);
++ out_dput:
++ dput(hidden_root);
++ dput(dtohd2(sb->s_root)); /* release the hidden_sto_dentry too */
++ out_free:
++ kfree(stopd(sb));
++ __stopd(sb) = NULL;
++ out:
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ return err;
++#else
++ if (err) {
++ return ERR_PTR(err);
++ } else {
++ return sb;
++ }
++#endif
++}
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++static int mini_fo_get_sb(struct file_system_type *fs_type,
++ int flags, const char *dev_name,
++ void *raw_data, struct vfsmount *mnt)
++{
++ return get_sb_nodev(fs_type, flags, raw_data, mini_fo_read_super, mnt);
++}
++#else
++static struct super_block *mini_fo_get_sb(struct file_system_type *fs_type,
++ int flags, const char *dev_name,
++ void *raw_data)
++{
++ return get_sb_nodev(fs_type, flags, raw_data, mini_fo_read_super);
++}
++#endif
++
++void mini_fo_kill_block_super(struct super_block *sb)
++{
++ generic_shutdown_super(sb);
++ /*
++ * XXX: BUG: Halcrow: Things get unstable sometime after this point:
++ * lib/rwsem-spinlock.c:127: spin_is_locked on uninitialized
++ * fs/fs-writeback.c:402: spin_lock(fs/super.c:a0381828) already
++ * locked by fs/fs-writeback.c/402
++ *
++ * Apparently, someone's not releasing a lock on sb_lock...
++ */
++}
++
++static struct file_system_type mini_fo_fs_type = {
++ .owner = THIS_MODULE,
++ .name = "mini_fo",
++ .get_sb = mini_fo_get_sb,
++ .kill_sb = mini_fo_kill_block_super,
++ .fs_flags = 0,
++};
++
++
++#else
++static DECLARE_FSTYPE(mini_fo_fs_type, "mini_fo", mini_fo_read_super, 0);
++#endif
++
++static int __init init_mini_fo_fs(void)
++{
++ printk("Registering mini_fo version $Id$\n");
++ return register_filesystem(&mini_fo_fs_type);
++}
++static void __exit exit_mini_fo_fs(void)
++{
++ printk("Unregistering mini_fo version $Id$\n");
++ unregister_filesystem(&mini_fo_fs_type);
++}
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++EXPORT_NO_SYMBOLS;
++#endif
++
++MODULE_AUTHOR("Erez Zadok <ezk@cs.sunysb.edu>");
++MODULE_DESCRIPTION("FiST-generated mini_fo filesystem");
++MODULE_LICENSE("GPL");
++
++/* MODULE_PARM(fist_debug_var, "i"); */
++/* MODULE_PARM_DESC(fist_debug_var, "Debug level"); */
++
++module_init(init_mini_fo_fs)
++module_exit(exit_mini_fo_fs)
+Index: linux-2.6.23-rc6/fs/mini_fo/Makefile
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/Makefile 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,17 @@
++#
++# Makefile for mini_fo 2.4 and 2.6 Linux kernels
++#
++# Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++#
++# This program is free software; you can redistribute it and/or
++# modify it under the terms of the GNU General Public License
++# as published by the Free Software Foundation; either version
++# 2 of the License, or (at your option) any later version.
++#
++
++obj-$(CONFIG_MINI_FO) := mini_fo.o
++mini_fo-objs := meta.o dentry.o file.o inode.o main.o super.o state.o aux.o
++
++# dependencies
++${mini_fo-objs}: mini_fo.h fist.h
++
+Index: linux-2.6.23-rc6/fs/mini_fo/meta.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/meta.c 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,1000 @@
++/*
++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++#ifdef HAVE_CONFIG_H
++# include <config.h>
++#endif /* HAVE_CONFIG_H */
++#include "fist.h"
++#include "mini_fo.h"
++
++int meta_build_lists(dentry_t *dentry)
++{
++ struct mini_fo_inode_info *inode_info;
++
++ dentry_t *meta_dentry = 0;
++ file_t *meta_file = 0;
++ mm_segment_t old_fs;
++ void *buf;
++
++ int bytes, len;
++ struct vfsmount *meta_mnt;
++ char *entry;
++
++ inode_info = itopd(dentry->d_inode);
++ if(!(inode_info->deleted_list_size == -1 &&
++ inode_info->renamed_list_size == -1)) {
++ printk(KERN_CRIT "mini_fo: meta_build_lists: \
++ Error, list(s) not virgin.\n");
++ return -1;
++ }
++
++ /* init our meta lists */
++ INIT_LIST_HEAD(&inode_info->deleted_list);
++ inode_info->deleted_list_size = 0;
++
++ INIT_LIST_HEAD(&inode_info->renamed_list);
++ inode_info->renamed_list_size = 0;
++
++ /* might there be a META-file? */
++ if(dtohd2(dentry) && dtohd2(dentry)->d_inode) {
++ meta_dentry = lookup_one_len(META_FILENAME,
++ dtohd2(dentry),
++ strlen(META_FILENAME));
++ if(!meta_dentry->d_inode) {
++ dput(meta_dentry);
++ goto out_ok;
++ }
++ /* $%& err, is this correct? */
++ meta_mnt = stopd(dentry->d_inode->i_sb)->hidden_mnt2;
++ mntget(meta_mnt);
++
++
++ /* open META-file for reading */
++ meta_file = dentry_open(meta_dentry, meta_mnt, 0x0);
++ if(!meta_file || IS_ERR(meta_file)) {
++ printk(KERN_CRIT "mini_fo: meta_build_lists: \
++ ERROR opening META file.\n");
++ goto out_err;
++ }
++
++ /* check if fs supports reading */
++ if(!meta_file->f_op->read) {
++ printk(KERN_CRIT "mini_fo: meta_build_lists: \
++ ERROR, fs does not support reading.\n");
++ goto out_err_close;
++ }
++
++ /* allocate a page for transfering the data */
++ buf = (void *) __get_free_page(GFP_KERNEL);
++ if(!buf) {
++ printk(KERN_CRIT "mini_fo: meta_build_lists: \
++ ERROR, out of mem.\n");
++ goto out_err_close;
++ }
++ meta_file->f_pos = 0;
++ old_fs = get_fs();
++ set_fs(KERNEL_DS);
++ do {
++ char *c;
++ bytes = meta_file->f_op->read(meta_file, buf, PAGE_SIZE, &meta_file->f_pos);
++ if(bytes == PAGE_SIZE) {
++ /* trim a cut off filename and adjust f_pos to get it next time */
++ for(c = (char*) buf+PAGE_SIZE;
++ *c != '\n';
++ c--, bytes--, meta_file->f_pos--);
++ }
++ entry = (char *) buf;
++ while(entry < (char *) buf+bytes) {
++
++ char *old_path;
++ char *dir_name;
++ int old_len, new_len;
++
++ /* len without '\n'*/
++ len = (int) (strchr(entry, '\n') - entry);
++ switch (*entry) {
++ case 'D':
++ /* format: "D filename" */
++ meta_list_add_d_entry(dentry,
++ entry+2,
++ len-2);
++ break;
++ case 'R':
++ /* format: "R path/xy/dir newDir" */
++ old_path = entry+2;
++ dir_name = strchr(old_path, ' ') + 1;
++ old_len = dir_name - old_path - 1;
++ new_len = ((int) entry) + len - ((int ) dir_name);
++ meta_list_add_r_entry(dentry,
++ old_path,
++ old_len,
++ dir_name,
++ new_len);
++ break;
++ default:
++ /* unknown entry type detected */
++ break;
++ }
++ entry += len+1;
++ }
++
++ } while(meta_file->f_pos < meta_dentry->d_inode->i_size);
++
++ free_page((unsigned long) buf);
++ set_fs(old_fs);
++ fput(meta_file);
++ }
++ goto out_ok;
++
++ out_err_close:
++ fput(meta_file);
++ out_err:
++ mntput(meta_mnt);
++ dput(meta_dentry);
++ return -1;
++ out_ok:
++ return 1; /* check this!!! inode_info->wol_size; */
++}
++
++/* cleanups up all lists and free's the mem by dentry */
++int meta_put_lists(dentry_t *dentry)
++{
++ if(!dentry || !dentry->d_inode) {
++ printk("mini_fo: meta_put_lists: invalid dentry passed.\n");
++ return -1;
++ }
++ return __meta_put_lists(dentry->d_inode);
++}
++
++/* cleanups up all lists and free's the mem by inode */
++int __meta_put_lists(inode_t *inode)
++{
++ int err = 0;
++ if(!inode || !itopd(inode)) {
++ printk("mini_fo: __meta_put_lists: invalid inode passed.\n");
++ return -1;
++ }
++ err = __meta_put_d_list(inode);
++ err |= __meta_put_r_list(inode);
++ return err;
++}
++
++int meta_sync_lists(dentry_t *dentry)
++{
++ int err = 0;
++ if(!dentry || !dentry->d_inode) {
++ printk("mini_fo: meta_sync_lists: \
++ invalid dentry passed.\n");
++ return -1;
++ }
++ err = meta_sync_d_list(dentry, 0);
++ err |= meta_sync_r_list(dentry, 1);
++ return err;
++}
++
++
++/* remove all D entries from the renamed list and free the mem */
++int __meta_put_d_list(inode_t *inode)
++{
++ struct list_head *tmp;
++ struct deleted_entry *del_entry;
++ struct mini_fo_inode_info *inode_info;
++
++ if(!inode || !itopd(inode)) {
++ printk(KERN_CRIT "mini_fo: __meta_put_d_list: \
++ invalid inode passed.\n");
++ return -1;
++ }
++ inode_info = itopd(inode);
++
++ /* nuke the DELETED-list */
++ if(inode_info->deleted_list_size <= 0)
++ return 0;
++
++ while(!list_empty(&inode_info->deleted_list)) {
++ tmp = inode_info->deleted_list.next;
++ list_del(tmp);
++ del_entry = list_entry(tmp, struct deleted_entry, list);
++ kfree(del_entry->name);
++ kfree(del_entry);
++ }
++ inode_info->deleted_list_size = 0;
++
++ return 0;
++}
++
++/* remove all R entries from the renamed list and free the mem */
++int __meta_put_r_list(inode_t *inode)
++{
++ struct list_head *tmp;
++ struct renamed_entry *ren_entry;
++ struct mini_fo_inode_info *inode_info;
++
++ if(!inode || !itopd(inode)) {
++ printk(KERN_CRIT "mini_fo: meta_put_r_list: invalid inode.\n");
++ return -1;
++ }
++ inode_info = itopd(inode);
++
++ /* nuke the RENAMED-list */
++ if(inode_info->renamed_list_size <= 0)
++ return 0;
++
++ while(!list_empty(&inode_info->renamed_list)) {
++ tmp = inode_info->renamed_list.next;
++ list_del(tmp);
++ ren_entry = list_entry(tmp, struct renamed_entry, list);
++ kfree(ren_entry->new_name);
++ kfree(ren_entry->old_name);
++ kfree(ren_entry);
++ }
++ inode_info->renamed_list_size = 0;
++
++ return 0;
++}
++
++int meta_add_d_entry(dentry_t *dentry, const char *name, int len)
++{
++ int err = 0;
++ err = meta_list_add_d_entry(dentry, name, len);
++ err |= meta_write_d_entry(dentry,name,len);
++ return err;
++}
++
++/* add a D entry to the deleted list */
++int meta_list_add_d_entry(dentry_t *dentry, const char *name, int len)
++{
++ struct deleted_entry *del_entry;
++ struct mini_fo_inode_info *inode_info;
++
++ if(!dentry || !dentry->d_inode) {
++ printk(KERN_CRIT "mini_fo: meta_list_add_d_entry: \
++ invalid dentry passed.\n");
++ return -1;
++ }
++ inode_info = itopd(dentry->d_inode);
++
++ if(inode_info->deleted_list_size < 0)
++ return -1;
++
++ del_entry = (struct deleted_entry *)
++ kmalloc(sizeof(struct deleted_entry), GFP_KERNEL);
++ del_entry->name = (char*) kmalloc(len, GFP_KERNEL);
++ if(!del_entry || !del_entry->name) {
++ printk(KERN_CRIT "mini_fo: meta_list_add_d_entry: \
++ out of mem.\n");
++ kfree(del_entry->name);
++ kfree(del_entry);
++ return -ENOMEM;
++ }
++
++ strncpy(del_entry->name, name, len);
++ del_entry->len = len;
++
++ list_add(&del_entry->list, &inode_info->deleted_list);
++ inode_info->deleted_list_size++;
++ return 0;
++}
++
++int meta_add_r_entry(dentry_t *dentry,
++ const char *old_name, int old_len,
++ const char *new_name, int new_len)
++{
++ int err = 0;
++ err = meta_list_add_r_entry(dentry,
++ old_name, old_len,
++ new_name, new_len);
++ err |= meta_write_r_entry(dentry,
++ old_name, old_len,
++ new_name, new_len);
++ return err;
++}
++
++/* add a R entry to the renamed list */
++int meta_list_add_r_entry(dentry_t *dentry,
++ const char *old_name, int old_len,
++ const char *new_name, int new_len)
++{
++ struct renamed_entry *ren_entry;
++ struct mini_fo_inode_info *inode_info;
++
++ if(!dentry || !dentry->d_inode) {
++ printk(KERN_CRIT "mini_fo: meta_list_add_r_entry: \
++ invalid dentry passed.\n");
++ return -1;
++ }
++ inode_info = itopd(dentry->d_inode);
++
++ if(inode_info->renamed_list_size < 0)
++ return -1;
++
++ ren_entry = (struct renamed_entry *)
++ kmalloc(sizeof(struct renamed_entry), GFP_KERNEL);
++ ren_entry->old_name = (char*) kmalloc(old_len, GFP_KERNEL);
++ ren_entry->new_name = (char*) kmalloc(new_len, GFP_KERNEL);
++
++ if(!ren_entry || !ren_entry->old_name || !ren_entry->new_name) {
++ printk(KERN_CRIT "mini_fo: meta_list_add_r_entry: \
++ out of mem.\n");
++ kfree(ren_entry->new_name);
++ kfree(ren_entry->old_name);
++ kfree(ren_entry);
++ return -ENOMEM;
++ }
++
++ strncpy(ren_entry->old_name, old_name, old_len);
++ ren_entry->old_len = old_len;
++ strncpy(ren_entry->new_name, new_name, new_len);
++ ren_entry->new_len = new_len;
++
++ list_add(&ren_entry->list, &inode_info->renamed_list);
++ inode_info->renamed_list_size++;
++ return 0;
++}
++
++
++int meta_remove_r_entry(dentry_t *dentry, const char *name, int len)
++{
++ int err = 0;
++ if(!dentry || !dentry->d_inode) {
++ printk(KERN_CRIT
++ "mini_fo: meta_remove_r_entry: \
++ invalid dentry passed.\n");
++ return -1;
++ }
++
++ err = meta_list_remove_r_entry(dentry, name, len);
++ err |= meta_sync_lists(dentry);
++ return err;
++}
++
++int meta_list_remove_r_entry(dentry_t *dentry, const char *name, int len)
++{
++ if(!dentry || !dentry->d_inode) {
++ printk(KERN_CRIT
++ "mini_fo: meta_list_remove_r_entry: \
++ invalid dentry passed.\n");
++ return -1;
++ }
++ return __meta_list_remove_r_entry(dentry->d_inode, name, len);
++}
++
++int __meta_list_remove_r_entry(inode_t *inode, const char *name, int len)
++{
++ struct list_head *tmp;
++ struct renamed_entry *ren_entry;
++ struct mini_fo_inode_info *inode_info;
++
++ if(!inode || !itopd(inode))
++ printk(KERN_CRIT
++ "mini_fo: __meta_list_remove_r_entry: \
++ invalid inode passed.\n");
++ inode_info = itopd(inode);
++
++ if(inode_info->renamed_list_size < 0)
++ return -1;
++ if(inode_info->renamed_list_size == 0)
++ return 1;
++
++ list_for_each(tmp, &inode_info->renamed_list) {
++ ren_entry = list_entry(tmp, struct renamed_entry, list);
++ if(ren_entry->new_len != len)
++ continue;
++
++ if(!strncmp(ren_entry->new_name, name, len)) {
++ list_del(tmp);
++ kfree(ren_entry->new_name);
++ kfree(ren_entry->old_name);
++ kfree(ren_entry);
++ inode_info->renamed_list_size--;
++ return 0;
++ }
++ }
++ return 1;
++}
++
++
++/* append a single D entry to the meta file */
++int meta_write_d_entry(dentry_t *dentry, const char *name, int len)
++{
++ dentry_t *meta_dentry = 0;
++ file_t *meta_file = 0;
++ mm_segment_t old_fs;
++
++ int bytes, err;
++ struct vfsmount *meta_mnt = 0;
++ char *buf;
++
++ err = 0;
++
++ if(itopd(dentry->d_inode)->deleted_list_size < 0) {
++ err = -1;
++ goto out;
++ }
++
++ if(dtopd(dentry)->state == UNMODIFIED) {
++ err = build_sto_structure(dentry->d_parent, dentry);
++ if(err) {
++ printk(KERN_CRIT "mini_fo: meta_write_d_entry: \
++ build_sto_structure failed.\n");
++ goto out;
++ }
++ }
++ meta_dentry = lookup_one_len(META_FILENAME,
++ dtohd2(dentry), strlen (META_FILENAME));
++
++ /* We need to create a META-file */
++ if(!meta_dentry->d_inode) {
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ vfs_create(dtohd2(dentry)->d_inode,
++ meta_dentry,
++ S_IRUSR | S_IWUSR,
++ NULL);
++#else
++ vfs_create(dtohd2(dentry)->d_inode,
++ meta_dentry,
++ S_IRUSR | S_IWUSR);
++#endif
++ }
++ /* open META-file for writing */
++ meta_file = dentry_open(meta_dentry, meta_mnt, 0x1);
++ if(!meta_file || IS_ERR(meta_file)) {
++ printk(KERN_CRIT "mini_fo: meta_write_d_entry: \
++ ERROR opening meta file.\n");
++ mntput(meta_mnt); /* $%& is this necessary? */
++ dput(meta_dentry);
++ err = -1;
++ goto out;
++ }
++
++ /* check if fs supports writing */
++ if(!meta_file->f_op->write) {
++ printk(KERN_CRIT "mini_fo: meta_write_d_entry: \
++ ERROR, fs does not support writing.\n");
++ goto out_err_close;
++ }
++
++ meta_file->f_pos = meta_dentry->d_inode->i_size; /* append */
++ old_fs = get_fs();
++ set_fs(KERNEL_DS);
++
++ /* size: len for name, 1 for \n and 2 for "D " */
++ buf = (char *) kmalloc(len+3, GFP_KERNEL);
++ if (!buf) {
++ printk(KERN_CRIT "mini_fo: meta_write_d_entry: \
++ out of mem.\n");
++ return -ENOMEM;
++ }
++
++ buf[0] = 'D';
++ buf[1] = ' ';
++ strncpy(buf+2, name, len);
++ buf[len+2] = '\n';
++ bytes = meta_file->f_op->write(meta_file, buf, len+3,
++ &meta_file->f_pos);
++ if(bytes != len+3) {
++ printk(KERN_CRIT "mini_fo: meta_write_d_entry: \
++ ERROR writing.\n");
++ err = -1;
++ }
++ kfree(buf);
++ set_fs(old_fs);
++
++ out_err_close:
++ fput(meta_file);
++ out:
++ return err;
++}
++
++/* append a single R entry to the meta file */
++int meta_write_r_entry(dentry_t *dentry,
++ const char *old_name, int old_len,
++ const char *new_name, int new_len)
++{
++ dentry_t *meta_dentry = 0;
++ file_t *meta_file = 0;
++ mm_segment_t old_fs;
++
++ int bytes, err, buf_len;
++ struct vfsmount *meta_mnt = 0;
++ char *buf;
++
++
++ err = 0;
++
++ if(itopd(dentry->d_inode)->renamed_list_size < 0) {
++ err = -1;
++ goto out;
++ }
++
++ /* build the storage structure? */
++ if(dtopd(dentry)->state == UNMODIFIED) {
++ err = build_sto_structure(dentry->d_parent, dentry);
++ if(err) {
++ printk(KERN_CRIT "mini_fo: meta_write_r_entry: \
++ build_sto_structure failed.\n");
++ goto out;
++ }
++ }
++ meta_dentry = lookup_one_len(META_FILENAME,
++ dtohd2(dentry),
++ strlen (META_FILENAME));
++ if(!meta_dentry->d_inode) {
++ /* We need to create a META-file */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ vfs_create(dtohd2(dentry)->d_inode,
++ meta_dentry, S_IRUSR | S_IWUSR, NULL);
++#else
++ vfs_create(dtohd2(dentry)->d_inode,
++ meta_dentry, S_IRUSR | S_IWUSR);
++#endif
++ }
++ /* open META-file for writing */
++ meta_file = dentry_open(meta_dentry, meta_mnt, 0x1);
++ if(!meta_file || IS_ERR(meta_file)) {
++ printk(KERN_CRIT "mini_fo: meta_write_r_entry: \
++ ERROR opening meta file.\n");
++ mntput(meta_mnt);
++ dput(meta_dentry);
++ err = -1;
++ goto out;
++ }
++
++ /* check if fs supports writing */
++ if(!meta_file->f_op->write) {
++ printk(KERN_CRIT "mini_fo: meta_write_r_entry: \
++ ERROR, fs does not support writing.\n");
++ goto out_err_close;
++ }
++
++ meta_file->f_pos = meta_dentry->d_inode->i_size; /* append */
++ old_fs = get_fs();
++ set_fs(KERNEL_DS);
++
++ /* size: 2 for "R ", old_len+new_len for names, 1 blank+1 \n */
++ buf_len = old_len + new_len + 4;
++ buf = (char *) kmalloc(buf_len, GFP_KERNEL);
++ if (!buf) {
++ printk(KERN_CRIT "mini_fo: meta_write_r_entry: out of mem.\n");
++ return -ENOMEM;
++ }
++
++ buf[0] = 'R';
++ buf[1] = ' ';
++ strncpy(buf + 2, old_name, old_len);
++ buf[old_len + 2] = ' ';
++ strncpy(buf + old_len + 3, new_name, new_len);
++ buf[buf_len -1] = '\n';
++ bytes = meta_file->f_op->write(meta_file, buf, buf_len, &meta_file->f_pos);
++ if(bytes != buf_len) {
++ printk(KERN_CRIT "mini_fo: meta_write_r_entry: ERROR writing.\n");
++ err = -1;
++ }
++
++ kfree(buf);
++ set_fs(old_fs);
++
++ out_err_close:
++ fput(meta_file);
++ out:
++ return err;
++}
++
++/* sync D list to disk, append data if app_flag is 1 */
++/* check the meta_mnt, which seems not to be used (properly) */
++
++int meta_sync_d_list(dentry_t *dentry, int app_flag)
++{
++ dentry_t *meta_dentry;
++ file_t *meta_file;
++ mm_segment_t old_fs;
++
++ int bytes, err;
++ struct vfsmount *meta_mnt;
++ char *buf;
++
++ struct list_head *tmp;
++ struct deleted_entry *del_entry;
++ struct mini_fo_inode_info *inode_info;
++
++ err = 0;
++ meta_file=0;
++ meta_mnt=0;
++
++ if(!dentry || !dentry->d_inode) {
++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \
++ invalid inode passed.\n");
++ err = -1;
++ goto out;
++ }
++ inode_info = itopd(dentry->d_inode);
++
++ if(inode_info->deleted_list_size < 0) {
++ err = -1;
++ goto out;
++ }
++
++ /* ok, there is something to sync */
++
++ /* build the storage structure? */
++ if(!dtohd2(dentry) && !itohi2(dentry->d_inode)) {
++ err = build_sto_structure(dentry->d_parent, dentry);
++ if(err) {
++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \
++ build_sto_structure failed.\n");
++ goto out;
++ }
++ }
++ meta_dentry = lookup_one_len(META_FILENAME,
++ dtohd2(dentry),
++ strlen(META_FILENAME));
++ if(!meta_dentry->d_inode) {
++ /* We need to create a META-file */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ vfs_create(dtohd2(dentry)->d_inode,
++ meta_dentry, S_IRUSR | S_IWUSR, NULL);
++#else
++ vfs_create(dtohd2(dentry)->d_inode,
++ meta_dentry, S_IRUSR | S_IWUSR);
++#endif
++ app_flag = 0;
++ }
++ /* need we truncate the meta file? */
++ if(!app_flag) {
++ struct iattr newattrs;
++ newattrs.ia_size = 0;
++ newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&meta_dentry->d_inode->i_mutex);
++#else
++ down(&meta_dentry->d_inode->i_sem);
++#endif
++ err = notify_change(meta_dentry, &newattrs);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&meta_dentry->d_inode->i_mutex);
++#else
++ up(&meta_dentry->d_inode->i_sem);
++#endif
++
++ if(err || meta_dentry->d_inode->i_size != 0) {
++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \
++ ERROR truncating meta file.\n");
++ goto out_err_close;
++ }
++ }
++
++ /* open META-file for writing */
++ meta_file = dentry_open(meta_dentry, meta_mnt, 0x1);
++ if(!meta_file || IS_ERR(meta_file)) {
++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \
++ ERROR opening meta file.\n");
++ /* we don't mntget so we dont't mntput (for now)
++ * mntput(meta_mnt);
++ */
++ dput(meta_dentry);
++ err = -1;
++ goto out;
++ }
++
++ /* check if fs supports writing */
++ if(!meta_file->f_op->write) {
++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \
++ ERROR, fs does not support writing.\n");
++ goto out_err_close;
++ }
++
++ meta_file->f_pos = meta_dentry->d_inode->i_size; /* append */
++ old_fs = get_fs();
++ set_fs(KERNEL_DS);
++
++ /* here we go... */
++ list_for_each(tmp, &inode_info->deleted_list) {
++ del_entry = list_entry(tmp, struct deleted_entry, list);
++
++ /* size: len for name, 1 for \n and 2 for "D " */
++ buf = (char *) kmalloc(del_entry->len+3, GFP_KERNEL);
++ if (!buf) {
++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \
++ out of mem.\n");
++ return -ENOMEM;
++ }
++
++ buf[0] = 'D';
++ buf[1] = ' ';
++ strncpy(buf+2, del_entry->name, del_entry->len);
++ buf[del_entry->len+2] = '\n';
++ bytes = meta_file->f_op->write(meta_file, buf,
++ del_entry->len+3,
++ &meta_file->f_pos);
++ if(bytes != del_entry->len+3) {
++ printk(KERN_CRIT "mini_fo: meta_sync_d_list: \
++ ERROR writing.\n");
++ err |= -1;
++ }
++ kfree(buf);
++ }
++ set_fs(old_fs);
++
++ out_err_close:
++ fput(meta_file);
++ out:
++ return err;
++
++}
++
++int meta_sync_r_list(dentry_t *dentry, int app_flag)
++{
++ dentry_t *meta_dentry;
++ file_t *meta_file;
++ mm_segment_t old_fs;
++
++ int bytes, err, buf_len;
++ struct vfsmount *meta_mnt;
++ char *buf;
++
++ struct list_head *tmp;
++ struct renamed_entry *ren_entry;
++ struct mini_fo_inode_info *inode_info;
++
++ err = 0;
++ meta_file=0;
++ meta_mnt=0;
++
++ if(!dentry || !dentry->d_inode) {
++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \
++ invalid dentry passed.\n");
++ err = -1;
++ goto out;
++ }
++ inode_info = itopd(dentry->d_inode);
++
++ if(inode_info->deleted_list_size < 0) {
++ err = -1;
++ goto out;
++ }
++
++ /* ok, there is something to sync */
++
++ /* build the storage structure? */
++ if(!dtohd2(dentry) && !itohi2(dentry->d_inode)) {
++ err = build_sto_structure(dentry->d_parent, dentry);
++ if(err) {
++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \
++ build_sto_structure failed.\n");
++ goto out;
++ }
++ }
++ meta_dentry = lookup_one_len(META_FILENAME,
++ dtohd2(dentry),
++ strlen(META_FILENAME));
++ if(!meta_dentry->d_inode) {
++ /* We need to create a META-file */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ vfs_create(dtohd2(dentry)->d_inode,
++ meta_dentry, S_IRUSR | S_IWUSR, NULL);
++#else
++ vfs_create(dtohd2(dentry)->d_inode,
++ meta_dentry, S_IRUSR | S_IWUSR);
++#endif
++ app_flag = 0;
++ }
++ /* need we truncate the meta file? */
++ if(!app_flag) {
++ struct iattr newattrs;
++ newattrs.ia_size = 0;
++ newattrs.ia_valid = ATTR_SIZE | ATTR_CTIME;
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&meta_dentry->d_inode->i_mutex);
++#else
++ down(&meta_dentry->d_inode->i_sem);
++#endif
++ err = notify_change(meta_dentry, &newattrs);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&meta_dentry->d_inode->i_mutex);
++#else
++ up(&meta_dentry->d_inode->i_sem);
++#endif
++ if(err || meta_dentry->d_inode->i_size != 0) {
++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \
++ ERROR truncating meta file.\n");
++ goto out_err_close;
++ }
++ }
++
++ /* open META-file for writing */
++ meta_file = dentry_open(meta_dentry, meta_mnt, 0x1);
++ if(!meta_file || IS_ERR(meta_file)) {
++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \
++ ERROR opening meta file.\n");
++ /* we don't mntget so we dont't mntput (for now)
++ * mntput(meta_mnt);
++ */
++ dput(meta_dentry);
++ err = -1;
++ goto out;
++ }
++
++ /* check if fs supports writing */
++ if(!meta_file->f_op->write) {
++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \
++ ERROR, fs does not support writing.\n");
++ goto out_err_close;
++ }
++
++ meta_file->f_pos = meta_dentry->d_inode->i_size; /* append */
++ old_fs = get_fs();
++ set_fs(KERNEL_DS);
++
++ /* here we go... */
++ list_for_each(tmp, &inode_info->renamed_list) {
++ ren_entry = list_entry(tmp, struct renamed_entry, list);
++ /* size:
++ * 2 for "R ", old_len+new_len for names, 1 blank+1 \n */
++ buf_len = ren_entry->old_len + ren_entry->new_len + 4;
++ buf = (char *) kmalloc(buf_len, GFP_KERNEL);
++ if (!buf) {
++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \
++ out of mem.\n");
++ return -ENOMEM;
++ }
++ buf[0] = 'R';
++ buf[1] = ' ';
++ strncpy(buf + 2, ren_entry->old_name, ren_entry->old_len);
++ buf[ren_entry->old_len + 2] = ' ';
++ strncpy(buf + ren_entry->old_len + 3,
++ ren_entry->new_name, ren_entry->new_len);
++ buf[buf_len - 1] = '\n';
++ bytes = meta_file->f_op->write(meta_file, buf,
++ buf_len, &meta_file->f_pos);
++ if(bytes != buf_len) {
++ printk(KERN_CRIT "mini_fo: meta_sync_r_list: \
++ ERROR writing.\n");
++ err |= -1;
++ }
++ kfree(buf);
++ }
++ set_fs(old_fs);
++
++ out_err_close:
++ fput(meta_file);
++ out:
++ return err;
++}
++
++int meta_check_d_entry(dentry_t *dentry, const char *name, int len)
++{
++ if(!dentry || !dentry->d_inode)
++ printk(KERN_CRIT "mini_fo: meta_check_d_dentry: \
++ invalid dentry passed.\n");
++ return __meta_check_d_entry(dentry->d_inode, name, len);
++}
++
++int __meta_check_d_entry(inode_t *inode, const char *name, int len)
++{
++ struct list_head *tmp;
++ struct deleted_entry *del_entry;
++ struct mini_fo_inode_info *inode_info;
++
++ if(!inode || !itopd(inode))
++ printk(KERN_CRIT "mini_fo: __meta_check_d_dentry: \
++ invalid inode passed.\n");
++
++ inode_info = itopd(inode);
++
++ if(inode_info->deleted_list_size <= 0)
++ return 0;
++
++ list_for_each(tmp, &inode_info->deleted_list) {
++ del_entry = list_entry(tmp, struct deleted_entry, list);
++ if(del_entry->len != len)
++ continue;
++
++ if(!strncmp(del_entry->name, name, len))
++ return 1;
++ }
++ return 0;
++}
++
++/*
++ * check if file has been renamed and return path to orig. base dir.
++ * Implements no error return values so far, what of course sucks.
++ * String is null terminated.'
++ */
++char* meta_check_r_entry(dentry_t *dentry, const char *name, int len)
++{
++ if(!dentry || !dentry->d_inode) {
++ printk(KERN_CRIT "mini_fo: meta_check_r_dentry: \
++ invalid dentry passed.\n");
++ return NULL;
++ }
++ return __meta_check_r_entry(dentry->d_inode, name, len);
++}
++
++char* __meta_check_r_entry(inode_t *inode, const char *name, int len)
++{
++ struct list_head *tmp;
++ struct renamed_entry *ren_entry;
++ struct mini_fo_inode_info *inode_info;
++ char *old_path;
++
++ if(!inode || !itopd(inode)) {
++ printk(KERN_CRIT "mini_fo: meta_check_r_dentry: \
++ invalid inode passed.\n");
++ return NULL;
++ }
++ inode_info = itopd(inode);
++
++ if(inode_info->renamed_list_size <= 0)
++ return NULL;
++
++ list_for_each(tmp, &inode_info->renamed_list) {
++ ren_entry = list_entry(tmp, struct renamed_entry, list);
++ if(ren_entry->new_len != len)
++ continue;
++
++ if(!strncmp(ren_entry->new_name, name, len)) {
++ old_path = (char *)
++ kmalloc(ren_entry->old_len+1, GFP_KERNEL);
++ strncpy(old_path,
++ ren_entry->old_name,
++ ren_entry->old_len);
++ old_path[ren_entry->old_len]='\0';
++ return old_path;
++ }
++ }
++ return NULL;
++}
++
++/*
++ * This version only checks if entry exists and return:
++ * 1 if exists,
++ * 0 if not,
++ * -1 if error.
++ */
++int meta_is_r_entry(dentry_t *dentry, const char *name, int len)
++{
++ if(!dentry || !dentry->d_inode) {
++ printk(KERN_CRIT "mini_fo: meta_check_r_dentry [2]: \
++ invalid dentry passed.\n");
++ return -1;
++ }
++ return __meta_is_r_entry(dentry->d_inode, name, len);
++}
++
++int __meta_is_r_entry(inode_t *inode, const char *name, int len)
++{
++ struct list_head *tmp;
++ struct renamed_entry *ren_entry;
++ struct mini_fo_inode_info *inode_info;
++
++ if(!inode || !itopd(inode)) {
++ printk(KERN_CRIT "mini_fo: meta_check_r_dentry [2]: \
++ invalid inode passed.\n");
++ return -1;
++ }
++ inode_info = itopd(inode);
++
++ if(inode_info->renamed_list_size <= 0)
++ return -1;
++
++ list_for_each(tmp, &inode_info->renamed_list) {
++ ren_entry = list_entry(tmp, struct renamed_entry, list);
++ if(ren_entry->new_len != len)
++ continue;
++
++ if(!strncmp(ren_entry->new_name, name, len))
++ return 1;
++ }
++ return 0;
++}
++
+Index: linux-2.6.23-rc6/fs/mini_fo/mini_fo.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/mini_fo.h 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,510 @@
++/*
++ * Copyright (c) 1997-2003 Erez Zadok
++ * Copyright (c) 2001-2003 Stony Brook University
++ *
++ * For specific licensing information, see the COPYING file distributed with
++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING.
++ *
++ * This Copyright notice must be kept intact and distributed with all
++ * fistgen sources INCLUDING sources generated by fistgen.
++ */
++/*
++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++/*
++ * $Id$
++ */
++
++#ifndef __MINI_FO_H_
++#define __MINI_FO_H_
++
++#ifdef __KERNEL__
++
++/* META stuff */
++#define META_FILENAME "META_dAfFgHE39ktF3HD2sr"
++
++/* use xattrs? */
++#define XATTR
++
++/* File attributes that when changed, result in a file beeing copied to storage */
++#define COPY_FLAGS ATTR_MODE | ATTR_UID | ATTR_GID | ATTR_SIZE
++
++/*
++ * mini_fo filestates
++ */
++#define MODIFIED 1
++#define UNMODIFIED 2
++#define CREATED 3
++#define DEL_REWRITTEN 4
++#define DELETED 5
++#define NON_EXISTANT 6
++
++/* fist file systems superblock magic */
++# define MINI_FO_SUPER_MAGIC 0xf15f
++
++/*
++ * STRUCTURES:
++ */
++
++/* mini_fo inode data in memory */
++struct mini_fo_inode_info {
++ inode_t *wii_inode;
++ inode_t *wii_inode2; /* pointer to storage inode */
++
++ /* META-data lists */
++ /* deleted list, ex wol */
++ struct list_head deleted_list;
++ int deleted_list_size;
++
++ /* renamed list */
++ struct list_head renamed_list;
++ int renamed_list_size;
++
++ /* add other lists here ... */
++};
++
++/* mini_fo dentry data in memory */
++struct mini_fo_dentry_info {
++ dentry_t *wdi_dentry;
++ dentry_t *wdi_dentry2; /* pointer to storage dentry */
++ unsigned int state; /* state of the mini_fo dentry */
++};
++
++
++/* mini_fo super-block data in memory */
++struct mini_fo_sb_info {
++ super_block_t *wsi_sb, *wsi_sb2; /* mk: might point to the same sb */
++ struct vfsmount *hidden_mnt, *hidden_mnt2;
++ dentry_t *base_dir_dentry;
++ dentry_t *storage_dir_dentry;
++ ;
++};
++
++/* readdir_data, readdir helper struct */
++struct readdir_data {
++ struct list_head ndl_list; /* linked list head ptr */
++ int ndl_size; /* list size */
++ int sto_done; /* flag to show that the storage dir entries have
++ * all been read an now follow base entries */
++};
++
++/* file private data. */
++struct mini_fo_file_info {
++ struct file *wfi_file;
++ struct file *wfi_file2; /* pointer to storage file */
++ struct readdir_data rd;
++};
++
++/* struct ndl_entry */
++struct ndl_entry {
++ struct list_head list;
++ char *name;
++ int len;
++};
++
++/********************************
++ * META-data structures
++ ********************************/
++
++/* deleted entry */
++struct deleted_entry {
++ struct list_head list;
++ char *name;
++ int len;
++};
++
++/* renamed entry */
++struct renamed_entry {
++ struct list_head list;
++ char *old_name; /* old directory with full path */
++ int old_len; /* length of above string */
++ char *new_name; /* new directory name */
++ int new_len; /* length of above string */
++};
++
++/* attr_change entry */
++struct attr_change_entry {
++ struct list_head list;
++ char *name;
++ int len;
++};
++
++/* link entry */
++struct link_entry {
++ struct list_head list;
++ int links_moved;
++ int inum_base;
++ int inum_sto;
++ char *weird_name;
++ int weird_name_len;
++};
++
++
++/* Some other stuff required for mini_fo_filldir64, copied from
++ * fs/readdir.c
++ */
++
++#define ROUND_UP64(x) (((x)+sizeof(u64)-1) & ~(sizeof(u64)-1))
++#define NAME_OFFSET(de) ((int) ((de)->d_name - (char *) (de)))
++
++
++struct linux_dirent64 {
++ u64 d_ino;
++ s64 d_off;
++ unsigned short d_reclen;
++ unsigned char d_type;
++ char d_name[0];
++};
++
++
++struct getdents_callback64 {
++ struct linux_dirent64 * current_dir;
++ struct linux_dirent64 * previous;
++ int count;
++ int error;
++};
++
++struct linux_dirent {
++ unsigned long d_ino;
++ unsigned long d_off;
++ unsigned short d_reclen;
++ char d_name[1];
++};
++
++struct getdents_callback {
++ struct linux_dirent * current_dir;
++ struct linux_dirent * previous;
++ int count;
++ int error;
++};
++
++
++/*
++ * MACROS:
++ */
++
++/* file TO private_data */
++# define ftopd(file) ((struct mini_fo_file_info *)((file)->private_data))
++# define __ftopd(file) ((file)->private_data)
++/* file TO hidden_file */
++# define ftohf(file) ((ftopd(file))->wfi_file)
++# define ftohf2(file) ((ftopd(file))->wfi_file2)
++
++/* inode TO private_data */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++# define itopd(ino) ((struct mini_fo_inode_info *)(ino)->i_private)
++# define __itopd(ino) ((ino)->i_private)
++#else
++# define itopd(ino) ((struct mini_fo_inode_info *)(ino)->u.generic_ip)
++# define __itopd(ino) ((ino)->u.generic_ip)
++#endif
++/* inode TO hidden_inode */
++# define itohi(ino) (itopd(ino)->wii_inode)
++# define itohi2(ino) (itopd(ino)->wii_inode2)
++
++/* superblock TO private_data */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++# define stopd(super) ((struct mini_fo_sb_info *)(super)->s_fs_info)
++# define __stopd(super) ((super)->s_fs_info)
++#else
++# define stopd(super) ((struct mini_fo_sb_info *)(super)->u.generic_sbp)
++# define __stopd(super) ((super)->u.generic_sbp)
++#endif
++
++/* unused? # define vfs2priv stopd */
++/* superblock TO hidden_superblock */
++
++# define stohs(super) (stopd(super)->wsi_sb)
++# define stohs2(super) (stopd(super)->wsi_sb2)
++
++/* dentry TO private_data */
++# define dtopd(dentry) ((struct mini_fo_dentry_info *)(dentry)->d_fsdata)
++# define __dtopd(dentry) ((dentry)->d_fsdata)
++/* dentry TO hidden_dentry */
++# define dtohd(dent) (dtopd(dent)->wdi_dentry)
++# define dtohd2(dent) (dtopd(dent)->wdi_dentry2)
++
++/* dentry to state */
++# define dtost(dent) (dtopd(dent)->state)
++# define sbt(sb) ((sb)->s_type->name)
++
++#define IS_WRITE_FLAG(flag) (flag & (O_RDWR | O_WRONLY | O_APPEND))
++#define IS_COPY_FLAG(flag) (flag & (COPY_FLAGS))
++
++/* macros to simplify non-SCA code */
++# define MALLOC_PAGE_POINTERS(hidden_pages, num_hidden_pages)
++# define MALLOC_PAGEDATA_POINTERS(hidden_pages_data, num_hidden_pages)
++# define FREE_PAGE_POINTERS(hidden_pages, num)
++# define FREE_PAGEDATA_POINTERS(hidden_pages_data, num)
++# define FOR_EACH_PAGE
++# define CURRENT_HIDDEN_PAGE hidden_page
++# define CURRENT_HIDDEN_PAGEDATA hidden_page_data
++# define CURRENT_HIDDEN_PAGEINDEX page->index
++
++/*
++ * EXTERNALS:
++ */
++extern struct file_operations mini_fo_main_fops;
++extern struct file_operations mini_fo_dir_fops;
++extern struct inode_operations mini_fo_main_iops;
++extern struct inode_operations mini_fo_dir_iops;
++extern struct inode_operations mini_fo_symlink_iops;
++extern struct super_operations mini_fo_sops;
++extern struct dentry_operations mini_fo_dops;
++extern struct vm_operations_struct mini_fo_shared_vmops;
++extern struct vm_operations_struct mini_fo_private_vmops;
++extern struct address_space_operations mini_fo_aops;
++
++#if 0 /* unused by mini_fo */
++extern int mini_fo_interpose(dentry_t *hidden_dentry, dentry_t *this_dentry, super_block_t *sb, int flag);
++#if defined(FIST_FILTER_DATA) || defined(FIST_FILTER_SCA)
++extern page_t *mini_fo_get1page(file_t *file, int index);
++extern int mini_fo_fill_zeros(file_t *file, page_t *page, unsigned from);
++# endif /* FIST_FILTER_DATA || FIST_FILTER_SCA */
++
++
++# define mini_fo_hidden_dentry(d) __mini_fo_hidden_dentry(__FILE__,__FUNCTION__,__LINE__,(d))
++# define mini_fo_hidden_sto_dentry(d) __mini_fo_hidden_sto_dentry(__FILE__,__FUNCTION__,__LINE__,(d))
++
++extern dentry_t *__mini_fo_hidden_dentry(char *file, char *func, int line, dentry_t *this_dentry);
++extern dentry_t *__mini_fo_hidden_sto_dentry(char *file, char *func, int line, dentry_t *this_dentry);
++
++extern int mini_fo_read_file(const char *filename, void *buf, int len);
++extern int mini_fo_write_file(const char *filename, void *buf, int len);
++extern dentry_t *fist_lookup(dentry_t *dir, const char *name, vnode_t **out, uid_t uid, gid_t gid);
++#endif /* unused by mini_fo */
++
++/* state transition functions */
++extern int nondir_unmod_to_mod(dentry_t *dentry, int cp_flag);
++extern int nondir_del_rew_to_del(dentry_t *dentry);
++extern int nondir_creat_to_del(dentry_t *dentry);
++extern int nondir_mod_to_del(dentry_t *dentry);
++extern int nondir_unmod_to_del(dentry_t *dentry);
++
++extern int dir_unmod_to_mod(dentry_t *dentry);
++
++/* rename specials */
++extern int rename_directory(inode_t *old_dir, dentry_t *old_dentry, inode_t *new_dir, dentry_t *new_dentry);
++extern int rename_nondir(inode_t *old_dir, dentry_t *old_dentry, inode_t *new_dir, dentry_t *new_dentry);
++
++/* misc stuff */
++extern int mini_fo_tri_interpose(dentry_t *hidden_dentry,
++ dentry_t *hidden_sto_dentry,
++ dentry_t *dentry,
++ super_block_t *sb, int flag);
++
++extern int mini_fo_cp_cont(dentry_t *tgt_dentry, struct vfsmount *tgt_mnt,
++ dentry_t *src_dentry, struct vfsmount *src_mnt);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++extern int mini_fo_create(inode_t *dir, dentry_t *dentry, int mode, struct nameidata *nd);
++
++extern int create_sto_nod(dentry_t *dentry, int mode, dev_t dev);
++extern int create_sto_reg_file(dentry_t *dentry, int mode, struct nameidata *nd);
++#else
++extern int mini_fo_create(inode_t *dir, dentry_t *dentry, int mode);
++
++extern int create_sto_nod(dentry_t *dentry, int mode, int dev);
++extern int create_sto_reg_file(dentry_t *dentry, int mode);
++#endif
++
++extern int create_sto_dir(dentry_t *dentry, int mode);
++
++extern int exists_in_storage(dentry_t *dentry);
++extern int is_mini_fo_existant(dentry_t *dentry);
++extern int get_neg_sto_dentry(dentry_t *dentry);
++extern int build_sto_structure(dentry_t *dir, dentry_t *dentry);
++extern int get_mini_fo_bpath(dentry_t *dentry, char **bpath, int *bpath_len);
++extern dentry_t *bpath_walk(super_block_t *sb, char *bpath);
++extern int bpath_put(dentry_t *dentry);
++
++/* check_mini_fo types functions */
++extern int check_mini_fo_dentry(dentry_t *dentry);
++extern int check_mini_fo_file(file_t *file);
++extern int check_mini_fo_inode(inode_t *inode);
++
++/* General meta functions, can be called from outside of meta.c */
++extern int meta_build_lists(dentry_t *dentry);
++extern int meta_put_lists(dentry_t *dentry);
++extern int __meta_put_lists(inode_t *inode);
++
++extern int meta_add_d_entry(dentry_t *dentry, const char *name, int len);
++extern int meta_add_r_entry(dentry_t *dentry,
++ const char *old_name, int old_len,
++ const char *new_name, int new_len);
++
++extern int meta_remove_r_entry(dentry_t *dentry, const char *name, int len);
++
++extern int meta_check_d_entry(dentry_t *dentry, const char *name, int len);
++extern int __meta_check_d_entry(inode_t *inode, const char *name, int len);
++
++extern char* meta_check_r_entry(dentry_t *dentry, const char *name, int len);
++extern char* __meta_check_r_entry(inode_t *inode, const char *name, int len);
++extern int meta_is_r_entry(dentry_t *dentry, const char *name, int len);
++extern int __meta_is_r_entry(inode_t *inode, const char *name, int len);
++
++/* Specific meta functions, should be called only inside meta.c */
++extern int __meta_put_d_list(inode_t *inode);
++extern int __meta_put_r_list(inode_t *inode);
++
++extern int meta_list_add_d_entry(dentry_t *dentry,
++ const char *name, int len);
++extern int meta_list_add_r_entry(dentry_t *dentry,
++ const char *old_name, int old_len,
++ const char *new_name, int new_len);
++
++extern int meta_list_remove_r_entry(dentry_t *dentry,
++ const char *name, int len);
++
++extern int __meta_list_remove_r_entry(inode_t *inode,
++ const char *name, int len);
++
++extern int meta_write_d_entry(dentry_t *dentry, const char *name, int len);
++extern int meta_write_r_entry(dentry_t *dentry,
++ const char *old_name, int old_len,
++ const char *new_name, int new_len);
++
++extern int meta_sync_lists(dentry_t *dentry);
++extern int meta_sync_d_list(dentry_t *dentry, int app_flag);
++extern int meta_sync_r_list(dentry_t *dentry, int app_flag);
++
++/* ndl stuff */
++extern int ndl_add_entry(struct readdir_data *rd, const char *name, int len);
++extern void ndl_put_list(struct readdir_data *rd);
++extern int ndl_check_entry(struct readdir_data *rd,
++ const char *name, int len);
++
++
++# define copy_inode_size(dst, src) \
++ dst->i_size = src->i_size; \
++ dst->i_blocks = src->i_blocks;
++
++static inline void
++fist_copy_attr_atime(inode_t *dest, const inode_t *src)
++{
++ ASSERT(dest != NULL);
++ ASSERT(src != NULL);
++ dest->i_atime = src->i_atime;
++}
++static inline void
++fist_copy_attr_times(inode_t *dest, const inode_t *src)
++{
++ ASSERT(dest != NULL);
++ ASSERT(src != NULL);
++ dest->i_atime = src->i_atime;
++ dest->i_mtime = src->i_mtime;
++ dest->i_ctime = src->i_ctime;
++}
++static inline void
++fist_copy_attr_timesizes(inode_t *dest, const inode_t *src)
++{
++ ASSERT(dest != NULL);
++ ASSERT(src != NULL);
++ dest->i_atime = src->i_atime;
++ dest->i_mtime = src->i_mtime;
++ dest->i_ctime = src->i_ctime;
++ copy_inode_size(dest, src);
++}
++static inline void
++fist_copy_attr_all(inode_t *dest, const inode_t *src)
++{
++ ASSERT(dest != NULL);
++ ASSERT(src != NULL);
++ dest->i_mode = src->i_mode;
++ dest->i_nlink = src->i_nlink;
++ dest->i_uid = src->i_uid;
++ dest->i_gid = src->i_gid;
++ dest->i_rdev = src->i_rdev;
++ dest->i_atime = src->i_atime;
++ dest->i_mtime = src->i_mtime;
++ dest->i_ctime = src->i_ctime;
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
++ dest->i_blksize = src->i_blksize;
++#endif
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,12)
++ dest->i_blkbits = src->i_blkbits;
++# endif /* linux 2.4.12 and newer */
++ copy_inode_size(dest, src);
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)
++ dest->i_attr_flags = src->i_attr_flags;
++#else
++ dest->i_flags = src->i_flags;
++#endif
++}
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++/* copied from linux/fs.h */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++static inline void double_lock(struct dentry *d1, struct dentry *d2)
++{
++ struct mutex *m1 = &d1->d_inode->i_mutex;
++ struct mutex *m2 = &d2->d_inode->i_mutex;
++ if (m1 != m2) {
++ if ((unsigned long) m1 < (unsigned long) m2) {
++ struct mutex *tmp = m2;
++ m2 = m1; m1 = tmp;
++ }
++ mutex_lock(m1);
++ }
++ mutex_lock(m2);
++}
++
++static inline void double_unlock(struct dentry *d1, struct dentry *d2)
++{
++ struct mutex *m1 = &d1->d_inode->i_mutex;
++ struct mutex *m2 = &d2->d_inode->i_mutex;
++ mutex_unlock(m1);
++ if (m1 != m2)
++ mutex_unlock(m2);
++ dput(d1);
++ dput(d2);
++}
++
++#else
++static inline void double_down(struct semaphore *s1, struct semaphore *s2)
++{
++ if (s1 != s2) {
++ if ((unsigned long) s1 < (unsigned long) s2) {
++ struct semaphore *tmp = s2;
++ s2 = s1; s1 = tmp;
++ }
++ down(s1);
++ }
++ down(s2);
++}
++
++static inline void double_up(struct semaphore *s1, struct semaphore *s2)
++{
++ up(s1);
++ if (s1 != s2)
++ up(s2);
++}
++
++static inline void double_lock(struct dentry *d1, struct dentry *d2)
++{
++ double_down(&d1->d_inode->i_sem, &d2->d_inode->i_sem);
++}
++
++static inline void double_unlock(struct dentry *d1, struct dentry *d2)
++{
++ double_up(&d1->d_inode->i_sem,&d2->d_inode->i_sem);
++ dput(d1);
++ dput(d2);
++}
++#endif /* if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16) */
++#endif /* if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0) */
++#endif /* __KERNEL__ */
++
++/*
++ * Definitions for user and kernel code
++ */
++
++/* ioctls */
++
++#endif /* not __MINI_FO_H_ */
+Index: linux-2.6.23-rc6/fs/mini_fo/mini_fo-merge
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/mini_fo-merge 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,180 @@
++#!/bin/bash
++#
++# Copyright (C) 2005 Markus Klotzbuecher <mk@creamnet.de>
++# This program is free software; you can redistribute it and/or
++# modify it under the terms of the GNU General Public License
++# as published by the Free Software Foundation; either version
++# 2 of the License, or (at your option) any later version.
++#
++
++BASE=
++STO=
++HELP=
++DRYRUN=
++VERBOSE=
++TMP="/tmp/"
++META_NAME="META_dAfFgHE39ktF3HD2sr"
++SKIP_DEL_LIST="skip-delete-list.mini_fo-merge"
++
++COMMAND=
++exec_command()
++{
++ if [ x$DRYRUN == "xset" ]; then
++ echo " would run: $COMMAND"
++ elif ! [ x$DRYRUN == "xset" ]; then
++ if [ x$VERBOSE == "xset" ]; then
++ echo " running: $COMMAND"
++ fi
++ eval $COMMAND
++ fi
++}
++
++usage()
++{
++cat <<EOF
++
++USAGE: $0 -b <base dir> -s <storage dir>
++Version 0.1
++
++This script merges the contents of a mini_fo storage file system back
++to the base file system.
++
++!!! Warning: This will modify the base filesystem and can destroy data
++ if used wrongly.
++
++Options:
++ -b <base dir>
++ the directory of the base file system.
++
++ -s <storage dir>
++ the directory of the storage file system.
++
++ -d dry run, will not change anything and print the commands that
++ would be executed.
++
++ -t tmp dir for storing temporary file. default: $TMP
++
++ -v show what operations are performed.
++
++ -h displays this message.
++
++EOF
++}
++
++# parse parameters
++while getopts hdvt:b:s: OPTS
++ do
++ case $OPTS in
++ h) HELP="set";;
++ d) DRYRUN="set";;
++ v) VERBOSE="set";;
++ b) BASE="$OPTARG";;
++ s) STO="$OPTARG";;
++ t) TMP="$OPTARG";;
++ ?) usage
++ exit 1;;
++ esac
++done
++
++if [ "x$HELP" == "xset" ]; then
++ usage
++ exit -1
++fi
++
++if ! [ -d "$BASE" ] || ! [ -d "$STO" ]; then
++ echo -e "$0:\n Error, -s and/or -b argument missing. type $0 -h for help."
++ exit -1;
++fi
++
++# get full paths
++pushd $STO; STO=`pwd`; popd
++pushd $BASE; BASE=`pwd`; popd
++TMP=${TMP%/}
++
++
++cat<<EOF
++###############################################################################
++# mini_fo-merge
++#
++# base dir: $BASE
++# storage dir: $STO
++# meta filename: $META_NAME
++# dry run: $DRYRUN
++# verbose: $VERBOSE
++# tmp files: $TMP
++###############################################################################
++
++EOF
++
++rm $TMP/$SKIP_DEL_LIST
++
++# first process all renamed dirs
++echo "Merging renamed directories..."
++pushd $STO &> /dev/null
++find . -name $META_NAME -type f -print0 | xargs -0 -e grep -e '^R ' | tr -s ':R' ' ' | while read ENTRY; do
++ echo "entry: $ENTRY"
++ META_FILE=`echo $ENTRY | cut -d ' ' -f 1`
++ OLD_B_DIR=`echo $ENTRY | cut -d ' ' -f 2 | sed -e 's/\///'`
++ NEW_NAME=`echo $ENTRY | cut -d ' ' -f 3`
++ NEW_B_DIR=`echo $META_FILE | sed -e "s/$META_NAME/$NEW_NAME/" | sed -e 's/^\.\///'`
++ echo "META_FILE: $META_FILE"
++ echo "OLD_B_DIR: $OLD_B_DIR"
++ echo "NEW_NAME: $NEW_NAME"
++ echo "NEW_B_DIR: $NEW_B_DIR"
++
++ pushd $BASE &> /dev/null
++ # remove an existing dir in storage
++ COMMAND="rm -rf $NEW_B_DIR"; exec_command
++ COMMAND="cp -R $OLD_B_DIR $NEW_B_DIR"; exec_command
++ echo ""
++ popd &> /dev/null
++
++ # remember this dir to exclude it from deleting later
++ echo $NEW_B_DIR >> $TMP/$SKIP_DEL_LIST
++done
++
++# delete all whiteouted files from base
++echo -e "\nDeleting whiteout'ed files from base file system..."
++find . -name $META_NAME -type f -print0 | xargs -0 -e grep -e '^D ' | sed -e 's/:D//' | while read ENTRY; do
++ META_FILE=`echo $ENTRY | cut -d ' ' -f 1`
++ DEL_NAME=`echo $ENTRY | cut -d ' ' -f 2`
++ DEL_FILE=`echo $META_FILE | sed -e "s/$META_NAME/$DEL_NAME/" | sed -e 's/^\.\///'`
++ grep -x $DEL_FILE $TMP/$SKIP_DEL_LIST &> /dev/null
++ if [ $? -ne 0 ]; then
++ pushd $BASE &> /dev/null
++ COMMAND="rm -rf $DEL_FILE"; exec_command
++ popd &> /dev/null
++ else
++ echo " excluding: $DEL_FILE as in skip-del-list."
++ fi
++done
++
++# create all dirs and update permissions
++echo -e "\nSetting up directory structures in base file system..."
++find . -type d | sed -e 's/^\.\///' | while read DIR; do
++ PERMS=`stat -c %a $DIR`
++ DIR_UID=`stat -c %u $DIR`
++ DIR_GID=`stat -c %g $DIR`
++ pushd $BASE &> /dev/null
++ if ! [ -d $DIR ]; then
++ COMMAND="mkdir -p $DIR"; exec_command
++ fi
++ COMMAND="chmod $PERMS $DIR"; exec_command
++ COMMAND="chown $DIR_UID:$DIR_GID $DIR"; exec_command
++ popd &> /dev/null
++done
++
++# merge all non-directory files
++echo -e "\nMerging all non-directory files...."
++for i in b c p f l s; do
++ find . -type $i | sed -e 's/^\.\///' | grep -v "$META_NAME" | while read FILE; do
++ pushd $BASE #&> /dev/null
++ COMMAND="cp -df $STO/$FILE $BASE/$FILE"; exec_command
++ popd &> /dev/null
++ done
++done
++popd &> /dev/null
++
++#rm $TMP/$SKIP_DEL_LIST
++
++echo "Done!"
+Index: linux-2.6.23-rc6/fs/mini_fo/mini_fo-overlay
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/mini_fo-overlay 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,130 @@
++#!/bin/bash
++#
++# Copyright (C) 2005 Markus Klotzbuecher <mk@creamnet.de>
++# This program is free software; you can redistribute it and/or
++# modify it under the terms of the GNU General Public License
++# as published by the Free Software Foundation; either version
++# 2 of the License, or (at your option) any later version.
++#
++
++HELP=
++SUFF=
++MNTP=
++MNT_DIR="/mnt"
++STO=
++STO_DIR="/tmp"
++BASE=
++
++usage()
++{
++cat <<EOF
++
++Usage: $0 [-s suffix] [-d sto_dir_dir] [-m mount point] base_dir
++Version 0.1
++
++This script overlays the given base directory using the mini_fo file
++system. If only the base directory base_dir is given, $0
++will use a storage directory called "sto-<base_dir_name>" in $STO_DIR,
++and mount point "mini_fo-<base_dir_dir>" in $MNT_DIR.
++
++Options:
++ -s <suffix>
++ add given suffix to storage directory and the mount
++ point. This is usefull for overlaying one base directory
++ several times and avoiding conflicts with storage directory
++ names and mount points.
++
++ -d <sto_dir_dir>
++ change the directory in which the storage directory will be
++ created (default is currently "$STO_DIR".
++
++ -m <mount point>
++ use an alternative directory to create the mini_fo
++ mountpoint (default is currently "$MNT_DIR".
++
++ -h displays this message.
++
++EOF
++exit 1;
++}
++
++while getopts hm:s:d: OPTS
++ do
++ case $OPTS in
++ s) SUFF="$OPTARG";;
++ d) STO_DIR="$OPTARG";;
++ m) MNT_DIR="$OPTARG";;
++ h) HELP="set";;
++ ?) usage
++ exit 1;;
++ esac
++done
++shift $(($OPTIND - 1))
++
++BASE="$1"
++
++if [ "x$HELP" == "xset" ]; then
++ usage
++ exit -1
++fi
++
++# fix suffix
++if [ "x$SUFF" != "x" ]; then
++ SUFF="-$SUFF"
++fi
++
++# kill trailing slashes
++MNT_DIR=${MNT_DIR%/}
++STO_DIR=${STO_DIR%/}
++BASE=${BASE%/}
++
++
++if ! [ -d "$BASE" ]; then
++ echo "invalid base dir $BASE, run $0 -h for help."
++ exit -1
++fi
++
++# check opts
++if ! [ -d "$MNT_DIR" ]; then
++ echo "invalid mount dir $MNT_DIR, run $0 -h for help."
++ exit -1
++fi
++
++if ! [ -d "$STO_DIR" ]; then
++ echo "invalid sto_dir_dir $STO_DIR, run $0 -h for help."
++ exit -1
++fi
++
++MNTP="$MNT_DIR/mini_fo-`basename $BASE`$SUFF"
++STO="$STO_DIR/sto-`basename $BASE`$SUFF"
++
++# create the mount point if it doesn't exist
++mkdir -p $MNTP
++if [ $? -ne 0 ]; then
++ echo "Error, failed to create mount point $MNTP"
++fi
++
++mkdir -p $STO
++if [ $? -ne 0 ]; then
++ echo "Error, failed to create storage dir $STO"
++fi
++
++# check if fs is already mounted
++mount | grep mini_fo | grep $MNTP &> /dev/null
++if [ $? -eq 0 ]; then
++ echo "Error, existing mini_fo mount at $MNTP."
++ exit -1
++fi
++
++mount | grep mini_fo | grep $STO &> /dev/null
++if [ $? -eq 0 ]; then
++ echo "Error, $STO seems to be used already."
++ exit -1
++fi
++
++# mount
++mount -t mini_fo -o base=$BASE,sto=$STO $BASE $MNTP
++
++if [ $? -ne 0 ]; then
++ echo "Error, mounting failed, maybe no permisson to mount?"
++fi
+Index: linux-2.6.23-rc6/fs/mini_fo/mmap.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/mmap.c 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,637 @@
++/*
++ * Copyright (c) 1997-2003 Erez Zadok
++ * Copyright (c) 2001-2003 Stony Brook University
++ *
++ * For specific licensing information, see the COPYING file distributed with
++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING.
++ *
++ * This Copyright notice must be kept intact and distributed with all
++ * fistgen sources INCLUDING sources generated by fistgen.
++ */
++/*
++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++/*
++ * $Id$
++ */
++
++#ifdef HAVE_CONFIG_H
++# include <config.h>
++#endif /* HAVE_CONFIG_H */
++
++#include "fist.h"
++#include "mini_fo.h"
++
++
++#ifdef FIST_COUNT_WRITES
++/* for counting writes in the middle vs. regular writes */
++unsigned long count_writes = 0, count_writes_middle = 0;
++#endif /* FIST_COUNT_WRITES */
++
++/* forward declaration of commit write and prepare write */
++STATIC int mini_fo_commit_write(file_t *file, page_t *page, unsigned from, unsigned to);
++STATIC int mini_fo_prepare_write(file_t *file, page_t *page, unsigned from, unsigned to);
++
++
++/*
++ * Function for handling creation of holes when lseek-ing past the
++ * end of the file and then writing some data.
++ */
++int
++mini_fo_fill_zeros(file_t* file, page_t *page, unsigned from)
++{
++ int err = 0;
++ dentry_t *dentry = file->f_dentry;
++ inode_t *inode = dentry->d_inode;
++ page_t *tmp_page;
++ int index;
++
++ print_entry_location();
++
++ for (index = inode->i_size >> PAGE_CACHE_SHIFT; index < page->index; index++) {
++ tmp_page = mini_fo_get1page(file, index);
++ if (IS_ERR(tmp_page)) {
++ err = PTR_ERR(tmp_page);
++ goto out;
++ }
++
++ /*
++ * zero out rest of the contents of the page between the appropriate
++ * offsets.
++ */
++ memset((char*)page_address(tmp_page) + (inode->i_size & ~PAGE_CACHE_MASK), 0, PAGE_CACHE_SIZE - (inode->i_size & ~PAGE_CACHE_MASK));
++
++ if (! (err = mini_fo_prepare_write(file, tmp_page, 0, PAGE_CACHE_SIZE)))
++ err = mini_fo_commit_write(file, tmp_page, 0, PAGE_CACHE_SIZE);
++
++ page_cache_release(tmp_page);
++ if (err < 0)
++ goto out;
++ if (current->need_resched)
++ schedule();
++ }
++
++ /* zero out appropriate parts of last page */
++
++ /*
++ * if the encoding type is block, then adjust the 'from' (where the
++ * zeroing will start) offset appropriately
++ */
++ from = from & (~(FIST_ENCODING_BLOCKSIZE - 1));
++
++ if ((from - (inode->i_size & ~PAGE_CACHE_MASK)) > 0) {
++
++ memset((char*)page_address(page) + (inode->i_size & ~PAGE_CACHE_MASK), 0, from - (inode->i_size & ~PAGE_CACHE_MASK));
++ if (! (err = mini_fo_prepare_write(file, page, 0, PAGE_CACHE_SIZE)))
++ err = mini_fo_commit_write(file, page, 0, PAGE_CACHE_SIZE);
++
++ if (err < 0)
++ goto out;
++ if (current->need_resched)
++ schedule();
++ }
++
++ out:
++ print_exit_status(err);
++ return err;
++}
++
++
++
++STATIC int
++mini_fo_writepage(page_t *page)
++{
++ int err = -EIO;
++ inode_t *inode;
++ inode_t *hidden_inode;
++ page_t *hidden_page;
++ char *kaddr, *hidden_kaddr;
++
++ print_entry_location();
++
++ inode = page->mapping->host;
++ hidden_inode = itohi(inode);
++
++ /*
++ * writepage is called when shared mmap'ed files need to write
++ * their pages, while prepare/commit_write are called from the
++ * non-paged write() interface. (However, in 2.3 the two interfaces
++ * share the same cache, while in 2.2 they didn't.)
++ *
++ * So we pretty much have to duplicate much of what commit_write does.
++ */
++
++ /* find lower page (returns a locked page) */
++ hidden_page = grab_cache_page(hidden_inode->i_mapping, page->index);
++ if (!hidden_page)
++ goto out;
++
++ /* get page address, and encode it */
++ kaddr = (char *) kmap(page);
++ hidden_kaddr = (char*) kmap(hidden_page);
++ mini_fo_encode_block(kaddr, hidden_kaddr, PAGE_CACHE_SIZE, inode, inode->i_sb, page->index);
++ /* if encode_block could fail, then return error */
++ kunmap(page);
++ kunmap(hidden_page);
++
++ /* call lower writepage (expects locked page) */
++ err = hidden_inode->i_mapping->a_ops->writepage(hidden_page);
++
++ /*
++ * update mtime and ctime of lower level file system
++ * mini_fo' mtime and ctime are updated by generic_file_write
++ */
++ hidden_inode->i_mtime = hidden_inode->i_ctime = CURRENT_TIME;
++
++#if LINUX_VERSION_CODE < KERNEL_VERSION(2,4,1)
++ UnlockPage(hidden_page); /* b/c grab_cache_page locked it */
++# endif /* kernel older than 2.4.1 */
++ page_cache_release(hidden_page); /* b/c grab_cache_page increased refcnt */
++
++ if (err)
++ ClearPageUptodate(page);
++ else
++ SetPageUptodate(page);
++ out:
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,4,1)
++ UnlockPage(page);
++# endif /* kernel 2.4.1 and newer */
++ print_exit_status(err);
++ return err;
++}
++
++
++/*
++ * get one page from cache or lower f/s, return error otherwise.
++ * returns unlocked, up-to-date page (if ok), with increased refcnt.
++ */
++page_t *
++mini_fo_get1page(file_t *file, int index)
++{
++ page_t *page;
++ dentry_t *dentry;
++ inode_t *inode;
++ struct address_space *mapping;
++ int err;
++
++ print_entry_location();
++
++ dentry = file->f_dentry; /* CPW: Moved below print_entry_location */
++ inode = dentry->d_inode;
++ mapping = inode->i_mapping;
++
++ fist_dprint(8, "%s: read page index %d pid %d\n", __FUNCTION__, index, current->pid);
++ if (index < 0) {
++ printk("%s BUG: index=%d\n", __FUNCTION__, index);
++ page = ERR_PTR(-EIO);
++ goto out;
++ }
++ page = read_cache_page(mapping,
++ index,
++ (filler_t *) mapping->a_ops->readpage,
++ (void *) file);
++ if (IS_ERR(page))
++ goto out;
++ wait_on_page(page);
++ if (!Page_Uptodate(page)) {
++ lock_page(page);
++ err = mapping->a_ops->readpage(file, page);
++ if (err) {
++ page = ERR_PTR(err);
++ goto out;
++ }
++ wait_on_page(page);
++ if (!Page_Uptodate(page)) {
++ page = ERR_PTR(-EIO);
++ goto out;
++ }
++ }
++
++ out:
++ print_exit_pointer(page);
++ return page;
++}
++
++
++/*
++ * get one page from cache or lower f/s, return error otherwise.
++ * similar to get1page, but doesn't guarantee that it will return
++ * an unlocked page.
++ */
++page_t *
++mini_fo_get1page_cached(file_t *file, int index)
++{
++ page_t *page;
++ dentry_t *dentry;
++ inode_t *inode;
++ struct address_space *mapping;
++ int err;
++
++ print_entry_location();
++
++ dentry = file->f_dentry; /* CPW: Moved below print_entry_location */
++ inode = dentry->d_inode;
++ mapping = inode->i_mapping;
++
++ fist_dprint(8, "%s: read page index %d pid %d\n", __FUNCTION__, index, current->pid);
++ if (index < 0) {
++ printk("%s BUG: index=%d\n", __FUNCTION__, index);
++ page = ERR_PTR(-EIO);
++ goto out;
++ }
++ page = read_cache_page(mapping,
++ index,
++ (filler_t *) mapping->a_ops->readpage,
++ (void *) file);
++ if (IS_ERR(page))
++ goto out;
++
++ out:
++ print_exit_pointer(page);
++ return page;
++}
++
++
++/*
++ * readpage is called from generic_page_read and the fault handler.
++ * If your file system uses generic_page_read for the read op, it
++ * must implement readpage.
++ *
++ * Readpage expects a locked page, and must unlock it.
++ */
++STATIC int
++mini_fo_do_readpage(file_t *file, page_t *page)
++{
++ int err = -EIO;
++ dentry_t *dentry;
++ file_t *hidden_file = NULL;
++ dentry_t *hidden_dentry;
++ inode_t *inode;
++ inode_t *hidden_inode;
++ char *page_data;
++ page_t *hidden_page;
++ char *hidden_page_data;
++ int real_size;
++
++ print_entry_location();
++
++ dentry = file->f_dentry; /* CPW: Moved below print_entry_location */
++ if (ftopd(file) != NULL)
++ hidden_file = ftohf(file);
++ hidden_dentry = dtohd(dentry);
++ inode = dentry->d_inode;
++ hidden_inode = itohi(inode);
++
++ fist_dprint(7, "%s: requesting page %d from file %s\n", __FUNCTION__, page->index, dentry->d_name.name);
++
++ MALLOC_PAGE_POINTERS(hidden_pages, num_hidden_pages);
++ MALLOC_PAGEDATA_POINTERS(hidden_pages_data, num_hidden_pages);
++ FOR_EACH_PAGE
++ CURRENT_HIDDEN_PAGE = NULL;
++
++ /* find lower page (returns a locked page) */
++ FOR_EACH_PAGE {
++ fist_dprint(8, "%s: Current page index = %d\n", __FUNCTION__, CURRENT_HIDDEN_PAGEINDEX);
++ CURRENT_HIDDEN_PAGE = read_cache_page(hidden_inode->i_mapping,
++ CURRENT_HIDDEN_PAGEINDEX,
++ (filler_t *) hidden_inode->i_mapping->a_ops->readpage,
++ (void *) hidden_file);
++ if (IS_ERR(CURRENT_HIDDEN_PAGE)) {
++ err = PTR_ERR(CURRENT_HIDDEN_PAGE);
++ CURRENT_HIDDEN_PAGE = NULL;
++ goto out_release;
++ }
++ }
++
++ /*
++ * wait for the page data to show up
++ * (signaled by readpage as unlocking the page)
++ */
++ FOR_EACH_PAGE {
++ wait_on_page(CURRENT_HIDDEN_PAGE);
++ if (!Page_Uptodate(CURRENT_HIDDEN_PAGE)) {
++ /*
++ * call readpage() again if we returned from wait_on_page with a
++ * page that's not up-to-date; that can happen when a partial
++ * page has a few buffers which are ok, but not the whole
++ * page.
++ */
++ lock_page(CURRENT_HIDDEN_PAGE);
++ err = hidden_inode->i_mapping->a_ops->readpage(hidden_file,
++ CURRENT_HIDDEN_PAGE);
++ if (err) {
++ CURRENT_HIDDEN_PAGE = NULL;
++ goto out_release;
++ }
++ wait_on_page(CURRENT_HIDDEN_PAGE);
++ if (!Page_Uptodate(CURRENT_HIDDEN_PAGE)) {
++ err = -EIO;
++ goto out_release;
++ }
++ }
++ }
++
++ /* map pages, get their addresses */
++ page_data = (char *) kmap(page);
++ FOR_EACH_PAGE
++ CURRENT_HIDDEN_PAGEDATA = (char *) kmap(CURRENT_HIDDEN_PAGE);
++
++ /* if decode_block could fail, then return error */
++ err = 0;
++ real_size = hidden_inode->i_size - (page->index << PAGE_CACHE_SHIFT);
++ if (real_size <= 0)
++ memset(page_data, 0, PAGE_CACHE_SIZE);
++ else if (real_size < PAGE_CACHE_SIZE) {
++ mini_fo_decode_block(hidden_page_data, page_data, real_size, inode, inode->i_sb, page->index);
++ memset(page_data + real_size, 0, PAGE_CACHE_SIZE - real_size);
++ } else
++ mini_fo_decode_block(hidden_page_data, page_data, PAGE_CACHE_SIZE, inode, inode->i_sb, page->index);
++
++ FOR_EACH_PAGE
++ kunmap(CURRENT_HIDDEN_PAGE);
++ kunmap(page);
++
++ out_release:
++ FOR_EACH_PAGE
++ if (CURRENT_HIDDEN_PAGE)
++ page_cache_release(CURRENT_HIDDEN_PAGE); /* undo read_cache_page */
++
++ FREE_PAGE_POINTERS(hidden_pages, num_hidden_pages);
++ FREE_PAGEDATA_POINTERS(hidden_pages_data, num_hidden_pages);
++
++ out:
++ if (err == 0)
++ SetPageUptodate(page);
++ else
++ ClearPageUptodate(page);
++
++ print_exit_status(err);
++ return err;
++}
++
++
++STATIC int
++mini_fo_readpage(file_t *file, page_t *page)
++{
++ int err;
++ print_entry_location();
++
++ err = mini_fo_do_readpage(file, page);
++
++ /*
++ * we have to unlock our page, b/c we _might_ have gotten a locked page.
++ * but we no longer have to wakeup on our page here, b/c UnlockPage does
++ * it
++ */
++ UnlockPage(page);
++
++ print_exit_status(err);
++ return err;
++}
++
++
++STATIC int
++mini_fo_prepare_write(file_t *file, page_t *page, unsigned from, unsigned to)
++{
++ int err = 0;
++
++ print_entry_location();
++
++ /*
++ * we call kmap(page) only here, and do the kunmap
++ * and the actual downcalls, including unlockpage and uncache
++ * in commit_write.
++ */
++ kmap(page);
++
++ /* fast path for whole page writes */
++ if (from == 0 && to == PAGE_CACHE_SIZE)
++ goto out;
++ /* read the page to "revalidate" our data */
++ /* call the helper function which doesn't unlock the page */
++ if (!Page_Uptodate(page))
++ err = mini_fo_do_readpage(file, page);
++
++ out:
++ print_exit_status(err);
++ return err;
++}
++
++
++
++STATIC int
++mini_fo_commit_write(file_t *file, page_t *page, unsigned from, unsigned to)
++{
++ int err = -ENOMEM;
++ inode_t *inode;
++ inode_t *hidden_inode;
++ page_t *hidden_page;
++ file_t *hidden_file = NULL;
++ loff_t pos;
++ unsigned bytes = to - from;
++ unsigned hidden_from, hidden_to, hidden_bytes;
++
++ print_entry_location();
++
++ inode = page->mapping->host; /* CPW: Moved below print_entry_location */
++ hidden_inode = itohi(inode);
++
++ ASSERT(file != NULL);
++ /*
++ * here we have a kmapped page, with data from the user copied
++ * into it. we need to encode_block it, and then call the lower
++ * commit_write. We also need to simulate same behavior of
++ * generic_file_write, and call prepare_write on the lower f/s first.
++ */
++#ifdef FIST_COUNT_WRITES
++ count_writes++;
++# endif /* FIST_COUNT_WRITES */
++
++ /* this is append and/or extend -- we can't have holes so fill them in */
++ if (page->index > (hidden_inode->i_size >> PAGE_CACHE_SHIFT)) {
++ page_t *tmp_page;
++ int index;
++ for (index = hidden_inode->i_size >> PAGE_CACHE_SHIFT; index < page->index; index++) {
++ tmp_page = mini_fo_get1page(file, index);
++ if (IS_ERR(tmp_page)) {
++ err = PTR_ERR(tmp_page);
++ goto out;
++ }
++ /* zero out the contents of the page at the appropriate offsets */
++ memset((char*)page_address(tmp_page) + (inode->i_size & ~PAGE_CACHE_MASK), 0, PAGE_CACHE_SIZE - (inode->i_size & ~PAGE_CACHE_MASK));
++ if (!(err = mini_fo_prepare_write(file, tmp_page, 0, PAGE_CACHE_SIZE)))
++ err = mini_fo_commit_write(file, tmp_page, 0, PAGE_CACHE_SIZE);
++ page_cache_release(tmp_page);
++ if (err < 0)
++ goto out;
++ if (current->need_resched)
++ schedule();
++ }
++ }
++
++ if (ftopd(file) != NULL)
++ hidden_file = ftohf(file);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_inode->i_mutex);
++#else
++ down(&hidden_inode->i_sem);
++#endif
++ /* find lower page (returns a locked page) */
++ hidden_page = grab_cache_page(hidden_inode->i_mapping, page->index);
++ if (!hidden_page)
++ goto out;
++
++#if FIST_ENCODING_BLOCKSIZE > 1
++# error encoding_blocksize greater than 1 is not yet supported
++# endif /* FIST_ENCODING_BLOCKSIZE > 1 */
++
++ hidden_from = from & (~(FIST_ENCODING_BLOCKSIZE - 1));
++ hidden_to = ((to + FIST_ENCODING_BLOCKSIZE - 1) & (~(FIST_ENCODING_BLOCKSIZE - 1)));
++ if ((page->index << PAGE_CACHE_SHIFT) + to > hidden_inode->i_size) {
++
++ /*
++ * if this call to commit_write had introduced holes and the code
++ * for handling holes was invoked, then the beginning of this page
++ * must be zeroed out
++ * zero out bytes from 'size_of_file%pagesize' to 'from'.
++ */
++ if ((hidden_from - (inode->i_size & ~PAGE_CACHE_MASK)) > 0)
++ memset((char*)page_address(page) + (inode->i_size & ~PAGE_CACHE_MASK), 0, hidden_from - (inode->i_size & ~PAGE_CACHE_MASK));
++
++ }
++ hidden_bytes = hidden_to - hidden_from;
++
++ /* call lower prepare_write */
++ err = -EINVAL;
++ if (hidden_inode->i_mapping &&
++ hidden_inode->i_mapping->a_ops &&
++ hidden_inode->i_mapping->a_ops->prepare_write)
++ err = hidden_inode->i_mapping->a_ops->prepare_write(hidden_file,
++ hidden_page,
++ hidden_from,
++ hidden_to);
++ if (err)
++ /* don't leave locked pages behind, esp. on an ENOSPC */
++ goto out_unlock;
++
++ fist_dprint(8, "%s: encoding %d bytes\n", __FUNCTION__, hidden_bytes);
++ mini_fo_encode_block((char *) page_address(page) + hidden_from, (char*) page_address(hidden_page) + hidden_from, hidden_bytes, inode, inode->i_sb, page->index);
++ /* if encode_block could fail, then goto unlock and return error */
++
++ /* call lower commit_write */
++ err = hidden_inode->i_mapping->a_ops->commit_write(hidden_file,
++ hidden_page,
++ hidden_from,
++ hidden_to);
++
++ if (err < 0)
++ goto out_unlock;
++
++ err = bytes; /* convert error to no. of bytes */
++
++ inode->i_blocks = hidden_inode->i_blocks;
++ /* we may have to update i_size */
++ pos = (page->index << PAGE_CACHE_SHIFT) + to;
++ if (pos > inode->i_size)
++ inode->i_size = pos;
++
++ /*
++ * update mtime and ctime of lower level file system
++ * mini_fo' mtime and ctime are updated by generic_file_write
++ */
++ hidden_inode->i_mtime = hidden_inode->i_ctime = CURRENT_TIME;
++
++ mark_inode_dirty_sync(inode);
++
++ out_unlock:
++ UnlockPage(hidden_page);
++ page_cache_release(hidden_page);
++ kunmap(page); /* kmap was done in prepare_write */
++ out:
++ /* we must set our page as up-to-date */
++ if (err < 0)
++ ClearPageUptodate(page);
++ else
++ SetPageUptodate(page);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_inode->i_mutex);
++#else
++ up(&hidden_inode->i_sem);
++#endif
++ print_exit_status(err);
++ return err; /* assume all is ok */
++}
++
++
++STATIC int
++mini_fo_bmap(struct address_space *mapping, long block)
++{
++ int err = 0;
++ inode_t *inode;
++ inode_t *hidden_inode;
++
++ print_entry_location();
++
++ inode = (inode_t *) mapping->host;
++ hidden_inode = itohi(inode);
++
++ if (hidden_inode->i_mapping->a_ops->bmap)
++ err = hidden_inode->i_mapping->a_ops->bmap(hidden_inode->i_mapping, block);
++ print_exit_location();
++ return err;
++}
++
++
++/*
++ * This function is copied verbatim from mm/filemap.c.
++ * XXX: It should be simply moved to some header file instead -- bug Al about it!
++ */
++static inline int sync_page(struct page *page)
++{
++ struct address_space *mapping = page->mapping;
++
++ if (mapping && mapping->a_ops && mapping->a_ops->sync_page)
++ return mapping->a_ops->sync_page(page);
++ return 0;
++}
++
++
++/*
++ * XXX: we may not need this function if not FIST_FILTER_DATA.
++ * FIXME: for FIST_FILTER_SCA, get all lower pages and sync them each.
++ */
++STATIC int
++mini_fo_sync_page(page_t *page)
++{
++ int err = 0;
++ inode_t *inode;
++ inode_t *hidden_inode;
++ page_t *hidden_page;
++
++ print_entry_location();
++
++ inode = page->mapping->host; /* CPW: Moved below print_entry_location */
++ hidden_inode = itohi(inode);
++
++ /* find lower page (returns a locked page) */
++ hidden_page = grab_cache_page(hidden_inode->i_mapping, page->index);
++ if (!hidden_page)
++ goto out;
++
++ err = sync_page(hidden_page);
++
++ UnlockPage(hidden_page); /* b/c grab_cache_page locked it */
++ page_cache_release(hidden_page); /* b/c grab_cache_page increased refcnt */
++
++ out:
++ print_exit_status(err);
++ return err;
++}
+Index: linux-2.6.23-rc6/fs/mini_fo/README
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/README 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,163 @@
++README for the mini_fo overlay file system
++=========================================
++
++
++WHAT IS MINI_FO?
++----------------
++
++mini_fo is a virtual kernel file system that can make read-only
++file systems writable. This is done by redirecting modifying operations
++to a writeable location called "storage directory", and leaving the
++original data in the "base directory" untouched. When reading, the
++file system merges the modifed and original data so that only the
++newest versions will appear. This occurs transparently to the user,
++who can access the data like on any other read-write file system.
++
++Base and storage directories may be located on the same or on
++different partitions and may be of different file system types. While
++the storage directory obviously needs to be writable, the base may or
++may not be writable, what doesn't matter as it will no be modified
++anyway.
++
++
++WHAT IS GOOD FOR?
++-----------------
++
++The primary purpose of the mini_fo file system is to allow easy
++software updates to embedded systems, that often store their root
++file system in a read-only flash file system, but there are many
++more as for example sandboxing, or for allowing live-cds to
++permanently store information.
++
++
++BUILDING
++--------
++This should be simple. Adjust the Makefile to point to the correct
++kernel headers you want to build the module for. Then:
++
++ # make
++
++should build "mini_fo.o" for a 2.4 kernel or "mini_fo.ko" for a 2.6
++kernel.
++
++If you are building the module for you current kernel, you can install
++the module (as root):
++
++ # make install
++
++or uninstall with
++
++ # make uninstall
++
++
++USING THE FILE SYSTEM
++--------------------
++
++the general mount syntax is:
++
++ mount -t mini_fo -o base=<base directory>,sto=<storage directory>\
++ <base directory> <mount point>
++
++Example:
++
++You have mounted a cdrom to /mnt/cdrom and want to modifiy some files
++on it:
++
++load the module (as root)
++
++ # insmod mini_fo.o for a 2.4 kernel or
++
++ # insmod mini_fo.ko for a 2.6 kernel
++
++
++create a storage dir in tmp and a mountpoint for mini_fo:
++
++ # mkdir /tmp/sto
++ # mkdir /mnt/mini_fo
++
++and mount the mini_fo file system:
++
++ # mount -t mini_fo -o base=/mnt/cdrom,sto=/tmp/sto /mnt/cdrom /mnt/mini_fo
++
++
++Now the data stored on the cd can be accessed via the mini_fo
++mountpoint just like any read-write file system, files can be modified
++and deleted, new ones can be created and so on. When done unmount the
++file system:
++
++ # unmount /mnt/mini_fo
++
++Note that if the file system is mounted again using the same storage
++file system, of course it will appear in the modified state again. If
++you remount it using an new empty storage directory, it will be
++unmodified. Therefore by executing:
++
++ # cd /tmp/sto
++ # rm -rf *
++
++you can nuke all the changes you made to the original file system. But
++ remember NEVER do this while the mini_fo file system is mounted!
++
++
++Alternatively you can use the mini_fo-overlay bash script, that
++simplifies managing mini_fo mounts. See TOOLS Section.
++
++
++TOOLS
++-----
++
++mini_fo-merge (experimental):
++
++This is a bash script that will merge changes contained in the storage
++directory back to the base directory. This allows mini_fo to function
++as a cache file system by overlaying a slow (network, ...) file system
++and using a fast (ramdisk, ...) as storage. When done, changes can be
++merged back to the (slow) base with mini_fo-merge. See "mini_fo-merge
++-h" for details.
++
++It can be usefull for merging changes back after a successfull test
++(patches, software updates...)
++
++
++mini_fo-overlay:
++
++This bash script simplifies managing one or more mini_fo mounts. For
++overlaying a directory called "basedir1", you can just call:
++
++ # mini_fo-overlay basedir1
++
++This will mount mini_fo with "basedir1" as base, "/tmp/sto-basedir1/"
++as storage to "/mnt/mini_fo-basedir1/". It has more options though,
++type "mini_fo-overlay -h" for details.
++
++
++DOCUMENTATION, REPORTING BUGS, GETTING HELP
++-------------------------------------------
++
++Please visit the mini_fo project page at:
++
++http://www.denx.de/twiki/bin/view/Know/MiniFOHome
++
++
++WARNINGS
++--------
++
++Never modify the base or the storage directorys while the mini_fo
++file system is mounted, or you might crash you system. Simply accessing
++and reading should not cause any trouble.
++
++Exporting a mini_fo mount point via NFS has not been tested, and may
++or may not work.
++
++Check the RELEASE_NOTES for details on bugs and features.
++
++
++
++Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++
++This program is free software; you can redistribute it and/or
++modify it under the terms of the GNU General Public License
++as published by the Free Software Foundation; either version
++2 of the License, or (at your option) any later version.
++
++
+Index: linux-2.6.23-rc6/fs/mini_fo/RELEASE_NOTES
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/RELEASE_NOTES 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,111 @@
++Release: mini_fo-0.6.1 (v0-6-1)
++Date: 21.09.2005
++
++
++Changes:
++--------
++v0-6-1:
++
++- bugfixes (see ChangeLog)
++
++- two helper scripts "mini_fo_merge" and "mini_fo_overlay" (see
++ README for details).
++
++v0-6-0:
++
++- Support for 2.4 and 2.6 (see Makefile)
++
++- Partial hard link support (creating works as expected, but already
++ existing links in the base file system will be treated as if they
++ were individual files).
++
++- Various bugfixes and cleanups.
++
++
++v0-6-0-pre1:
++
++- This is mini_fo-0-6-0-pre1! This release is a complete rewrite of
++ many vital mini_fo parts such as the old whiteout list code which
++ has been replaced by the new META subsystem.
++
++- Light weight directory renaming implemented. This means if a
++ directory is renamed via the mini_fo filesystem this will no longer
++ result in a complete copy in storage, instead only one empty
++ directory will be created. All base filed contained in the original
++ directory stay there until modified.
++
++- Special files (creating, renaming, deleting etc.) now working.
++
++- Many bugfixes and cleanup, mini_fo is now a lot more stable.
++
++
++v0-5-10:
++
++- Final release of the 0-5-* versions. Next will be a complete rewrite
++ of many features. This release contains several bugfixes related to
++ directory renaming.
++
++
++v0-5-10-pre6:
++
++- Lots of cleanup and several bugfixes related to directory deleting
++
++- Directory renaming suddenly works, what is most likely due to the
++ fact tha that "mv" is smart: if the classic rename doesn't work it
++ will assume that source and target file are on different fs and will
++ copy the directory and try to remove the source directory. Until
++ directory removing wasn't implemented, it would fail to do this and
++ rollback.
++ So, directory renaming works for now, but it doesn't yet do what you
++ would expect from a overlay fs, so use with care.
++
++
++v0-5-10-pre5:
++
++- implemented directory deleting
++- made parsing of mount options more stable
++- New format of mount options! (See README)
++- I can't reproduce the unknown panic with 2.4.25 anymore, so I'll
++ happily assume it never existed!
++
++
++Implemented features:
++---------------------
++
++- creating hard links (see BUGS on already existing hard links)
++- lightweight directory renaming
++- renaming device files, pipes, sockets, etc.
++- creating, renaming, deleting of special files
++- deleting directorys
++- general directory reading (simple "ls" )
++- creating files in existing directorys
++- creating directorys
++- renaming files.
++- reading and writing files (involves opening)
++- appending to files (creates copy in storage)
++- deleting files
++- llseek works too, what allows editors to work
++- persistency (a deleted file stay deleted over remounts)
++- use of symbolic links
++- creating of device files
++
++
++Not (yet) implemented features:
++-------------------------------
++
++- full hard link support.
++
++
++
++BUGS:
++-----
++
++Hard links in the base file system will be treated as individual
++files, not as links to one inode.
++
++The main problem with hard links isn't allowing to create them, but
++their pure existence. If you modify a base hard link, the changes made
++will only show up on this link, the other link will remain in the
++original state. I hope to fix this someday. Please note that this does
++not effect the special hard links '.' and '..', that are handled
++seperately by the lower fs.
+Index: linux-2.6.23-rc6/fs/mini_fo/state.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/state.c 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,620 @@
++/*
++ * Copyright (C) 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++#ifdef HAVE_CONFIG_H
++# include <config.h>
++#endif /* HAVE_CONFIG_H */
++
++#include "fist.h"
++#include "mini_fo.h"
++
++
++/* create the storage file, setup new states */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++int create_sto_reg_file(dentry_t *dentry, int mode, struct nameidata *nd)
++#else
++int create_sto_reg_file(dentry_t *dentry, int mode)
++#endif
++{
++ int err = 0;
++ inode_t *dir;
++ dentry_t *hidden_sto_dentry;
++ dentry_t *hidden_sto_dir_dentry;
++
++ if(exists_in_storage(dentry)) {
++ printk(KERN_CRIT "mini_fo: create_sto_file: wrong type or state.\n");
++ err = -EINVAL;
++ goto out;
++ }
++ err = get_neg_sto_dentry(dentry);
++
++ if (err) {
++ printk(KERN_CRIT "mini_fo: create_sto_file: ERROR getting neg. sto dentry.\n");
++ goto out;
++ }
++
++ dir = dentry->d_parent->d_inode;
++ hidden_sto_dentry = dtohd2(dentry);
++
++ /* lock parent */
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++ err = PTR_ERR(hidden_sto_dir_dentry);
++ if (IS_ERR(hidden_sto_dir_dentry))
++ goto out;
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ err = vfs_create(hidden_sto_dir_dentry->d_inode,
++ hidden_sto_dentry,
++ mode, nd);
++#else
++ err = vfs_create(hidden_sto_dir_dentry->d_inode,
++ hidden_sto_dentry,
++ mode);
++#endif
++ if(err) {
++ printk(KERN_CRIT "mini_fo: create_sto_file: ERROR creating sto file.\n");
++ goto out_lock;
++ }
++
++ if(!dtohd2(dentry)->d_inode) {
++ printk(KERN_CRIT "mini_fo: create_sto_file: ERROR creating sto file [2].\n");
++ err = -EINVAL;
++ goto out_lock;
++ }
++
++ /* interpose the new inode */
++ if(dtost(dentry) == DELETED) {
++ dtost(dentry) = DEL_REWRITTEN;
++ err = mini_fo_tri_interpose(NULL, hidden_sto_dentry, dentry, dir->i_sb, 0);
++ if(err)
++ goto out_lock;
++ }
++ else if(dtost(dentry) == NON_EXISTANT) {
++ dtost(dentry) = CREATED;
++ err = mini_fo_tri_interpose(dtohd(dentry), hidden_sto_dentry, dentry, dir->i_sb, 0);
++ if(err)
++ goto out_lock;
++ }
++ else if(dtost(dentry) == UNMODIFIED) {
++ dtost(dentry) = MODIFIED;
++ /* interpose on new inode */
++ if(itohi2(dentry->d_inode) != NULL) {
++ printk(KERN_CRIT "mini_fo: create_sto_file: invalid inode detected.\n");
++ err = -EINVAL;
++ goto out_lock;
++ }
++ itohi2(dentry->d_inode) = igrab(dtohd2(dentry)->d_inode);
++ }
++ fist_copy_attr_timesizes(dentry->d_parent->d_inode,
++ hidden_sto_dir_dentry->d_inode);
++
++ out_lock:
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++ out:
++ return err;
++}
++
++/* create the sto dir, setup states */
++int create_sto_dir(dentry_t *dentry, int mode)
++{
++ int err = 0;
++ inode_t *dir;
++ dentry_t *hidden_sto_dentry;
++ dentry_t *hidden_sto_dir_dentry;
++
++ /* had to take the "!S_ISDIR(mode))" check out, because it failed */
++ if(exists_in_storage(dentry)) {
++ printk(KERN_CRIT "mini_fo: create_sto_dir: wrong type or state.\\
++n");
++ err = -EINVAL;
++ goto out;
++ }
++
++ err = get_neg_sto_dentry(dentry);
++ if(err) {
++ err = -EINVAL;
++ goto out;
++ }
++
++ dir = dentry->d_parent->d_inode;
++ hidden_sto_dentry = dtohd2(dentry);
++
++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++ err = PTR_ERR(hidden_sto_dir_dentry);
++ if (IS_ERR(hidden_sto_dir_dentry))
++ goto out;
++
++ err = vfs_mkdir(hidden_sto_dir_dentry->d_inode,
++ hidden_sto_dentry,
++ mode);
++ if(err) {
++ printk(KERN_CRIT "mini_fo: create_sto_dir: ERROR creating sto dir.\n");
++ goto out_lock;
++ }
++
++ if(!dtohd2(dentry)->d_inode) {
++ printk(KERN_CRIT "mini_fo: create_sto_dir: ERROR creating sto dir [2].\n");
++ err = -EINVAL;
++ goto out_lock;
++ }
++
++ /* interpose the new inode */
++ if(dtost(dentry) == DELETED) {
++ dtost(dentry) = DEL_REWRITTEN;
++ err = mini_fo_tri_interpose(NULL, hidden_sto_dentry, dentry, dir->i_sb, 0);
++ if(err)
++ goto out_lock;
++ }
++ else if(dtopd(dentry)->state == NON_EXISTANT) {
++ dtopd(dentry)->state = CREATED;
++ err = mini_fo_tri_interpose(dtohd(dentry), hidden_sto_dentry, dentry, dir->i_sb, 0);
++ if(err)
++ goto out_lock;
++ }
++ else if(dtopd(dentry)->state == UNMODIFIED) {
++ dtopd(dentry)->state = MODIFIED;
++ /* interpose on new inode */
++ if(itohi2(dentry->d_inode) != NULL) {
++ printk(KERN_CRIT "mini_fo: create_sto_dir: ERROR, invalid inode detected.\n");
++ err = -EINVAL;
++ goto out_lock;
++ }
++ itohi2(dentry->d_inode) = igrab(dtohd2(dentry)->d_inode);
++ }
++
++ fist_copy_attr_timesizes(dir, hidden_sto_dir_dentry->d_inode);
++
++ /* initalize the wol list */
++ itopd(dentry->d_inode)->deleted_list_size = -1;
++ itopd(dentry->d_inode)->renamed_list_size = -1;
++ meta_build_lists(dentry);
++
++
++ out_lock:
++ /* was: unlock_dir(hidden_sto_dir_dentry); */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++ out:
++ return err;
++}
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++int create_sto_nod(dentry_t *dentry, int mode, dev_t dev)
++#else
++int create_sto_nod(dentry_t *dentry, int mode, int dev)
++#endif
++{
++ int err = 0;
++ inode_t *dir;
++ dentry_t *hidden_sto_dentry;
++ dentry_t *hidden_sto_dir_dentry;
++
++ if(exists_in_storage(dentry)) {
++ err = -EEXIST;
++ goto out;
++ }
++ err = get_neg_sto_dentry(dentry);
++
++ if (err) {
++ printk(KERN_CRIT "mini_fo: create_sto_nod: ERROR getting neg. sto dentry.\n");
++ goto out;
++ }
++
++ dir = dentry->d_parent->d_inode;
++ hidden_sto_dentry = dtohd2(dentry);
++
++ /* lock parent */
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++ err = PTR_ERR(hidden_sto_dir_dentry);
++ if (IS_ERR(hidden_sto_dir_dentry))
++ goto out;
++
++ err = vfs_mknod(hidden_sto_dir_dentry->d_inode, hidden_sto_dentry, mode, dev);
++ if(err)
++ goto out_lock;
++
++ if(!dtohd2(dentry)->d_inode) {
++ printk(KERN_CRIT "mini_fo: create_sto_nod: creating storage inode failed [1].\n");
++ err = -EINVAL; /* return something indicating failure */
++ goto out_lock;
++ }
++
++ /* interpose the new inode */
++ if(dtost(dentry) == DELETED) {
++ dtost(dentry) = DEL_REWRITTEN;
++ err = mini_fo_tri_interpose(NULL, hidden_sto_dentry, dentry, dir->i_sb, 0);
++ if(err)
++ goto out_lock;
++ }
++ else if(dtost(dentry) == NON_EXISTANT) {
++ dtost(dentry) = CREATED;
++ err = mini_fo_tri_interpose(dtohd(dentry), hidden_sto_dentry, dentry, dir->i_sb, 0);
++ if(err)
++ goto out_lock;
++ }
++ else if(dtost(dentry) == UNMODIFIED) {
++ dtost(dentry) = MODIFIED;
++ /* interpose on new inode */
++ if(itohi2(dentry->d_inode) != NULL) {
++ printk(KERN_CRIT "mini_fo: create_sto_nod: error, invalid inode detected.\n");
++ err = -EINVAL;
++ goto out_lock;
++ }
++ itohi2(dentry->d_inode) = igrab(dtohd2(dentry)->d_inode);
++ }
++
++ fist_copy_attr_timesizes(dir, hidden_sto_dir_dentry->d_inode);
++
++ out_lock:
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++ out:
++ return err;
++}
++
++
++/* unimplemented (and possibly not usefull):
++
++ nondir-del_to_del_rew
++ nondir-non_exist_to_creat
++
++ dir-unmod_to_del
++ dir-mod_to_del
++ dir-creat_to_del
++ dir-del_rew_to_del
++ dir-del_to_del_rew
++ dir-non_exist_to_creat
++*/
++
++
++/* bring a file of any type from state UNMODIFIED to MODIFIED */
++int nondir_unmod_to_mod(dentry_t *dentry, int cp_flag)
++{
++ int err = 0;
++ struct vfsmount *tgt_mnt;
++ struct vfsmount *src_mnt;
++ dentry_t *tgt_dentry;
++ dentry_t *src_dentry;
++ dentry_t *hidden_sto_dentry;
++ dentry_t *hidden_sto_dir_dentry;
++
++ check_mini_fo_dentry(dentry);
++
++ if((dtost(dentry) != UNMODIFIED) ||
++ S_ISDIR(dentry->d_inode->i_mode)) {
++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_mod: \
++ wrong type or state.\n");
++ err = -1;
++ goto out;
++ }
++ err = get_neg_sto_dentry(dentry);
++
++ if (err) {
++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_mod: \
++ ERROR getting neg. sto dentry.\n");
++ goto out;
++ }
++
++ /* create sto file */
++ hidden_sto_dentry = dtohd2(dentry);
++
++ /* lock parent */
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++ err = PTR_ERR(hidden_sto_dir_dentry);
++ if (IS_ERR(hidden_sto_dir_dentry))
++ goto out;
++
++ /* handle different types of nondirs */
++ if(S_ISCHR(dentry->d_inode->i_mode) ||
++ S_ISBLK(dentry->d_inode->i_mode)) {
++ err = vfs_mknod(hidden_sto_dir_dentry->d_inode,
++ hidden_sto_dentry,
++ dtohd(dentry)->d_inode->i_mode,
++ dtohd(dentry)->d_inode->i_rdev);
++ }
++
++ else if(S_ISREG(dentry->d_inode->i_mode)) {
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ err = vfs_create(hidden_sto_dir_dentry->d_inode,
++ hidden_sto_dentry,
++ dtohd(dentry)->d_inode->i_mode, NULL);
++#else
++ err = vfs_create(hidden_sto_dir_dentry->d_inode,
++ hidden_sto_dentry,
++ dtohd(dentry)->d_inode->i_mode);
++#endif
++ }
++ if(err) {
++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_mod: \
++ ERROR creating sto file.\n");
++ goto out_lock;
++ }
++
++ /* interpose on new inode */
++ if(itohi2(dentry->d_inode) != NULL) {
++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_mod: \
++ ERROR, invalid inode detected.\n");
++ err = -EINVAL;
++ goto out_lock;
++ }
++
++ itohi2(dentry->d_inode) = igrab(dtohd2(dentry)->d_inode);
++
++ fist_copy_attr_timesizes(dentry->d_parent->d_inode,
++ hidden_sto_dir_dentry->d_inode);
++ dtost(dentry) = MODIFIED;
++
++ /* copy contents if regular file and cp_flag = 1 */
++ if((cp_flag == 1) && S_ISREG(dentry->d_inode->i_mode)) {
++
++ /* unlock first */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++ dput(hidden_sto_dir_dentry);
++
++ tgt_dentry = dtohd2(dentry);
++ tgt_mnt = stopd(dentry->d_inode->i_sb)->hidden_mnt2;
++ src_dentry = dtohd(dentry);
++ src_mnt = stopd(dentry->d_inode->i_sb)->hidden_mnt;
++
++ err = mini_fo_cp_cont(tgt_dentry, tgt_mnt,
++ src_dentry, src_mnt);
++ if(err) {
++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_mod: \
++ ERROR copying contents.\n");
++ }
++ goto out;
++ }
++
++ out_lock:
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++ out:
++ return err;
++}
++
++/* this function is currently identical to nondir_creat_to_del */
++int nondir_del_rew_to_del(dentry_t *dentry)
++{
++ return nondir_creat_to_del(dentry);
++}
++
++int nondir_creat_to_del(dentry_t *dentry)
++{
++ int err = 0;
++
++ inode_t *hidden_sto_dir_inode;
++ dentry_t *hidden_sto_dir_dentry;
++ dentry_t *hidden_sto_dentry;
++
++ check_mini_fo_dentry(dentry);
++
++ /* for now this function serves for both state DEL_REWRITTEN and
++ * CREATED */
++ if(!(dtost(dentry) == CREATED || (dtost(dentry) == DEL_REWRITTEN)) ||
++ S_ISDIR(dentry->d_inode->i_mode)) {
++ printk(KERN_CRIT "mini_fo: nondir_mod_to_del/del_rew_to_del: \
++ wrong type or state.\n");
++ err = -1;
++ goto out;
++ }
++
++ hidden_sto_dir_inode = itohi2(dentry->d_parent->d_inode);
++ hidden_sto_dentry = dtohd2(dentry);
++
++ /* was: hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry);*/
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++ /* avoid destroying the hidden inode if the file is in use */
++ dget(hidden_sto_dentry);
++ err = vfs_unlink(hidden_sto_dir_inode, hidden_sto_dentry);
++ dput(hidden_sto_dentry);
++ if(!err)
++ d_delete(hidden_sto_dentry);
++
++ /* propagate number of hard-links */
++ dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink;
++
++ dtost(dentry) = NON_EXISTANT;
++
++ /* was: unlock_dir(hidden_sto_dir_dentry); */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++
++ out:
++ return err;
++}
++
++int nondir_mod_to_del(dentry_t *dentry)
++{
++ int err;
++ dentry_t *hidden_sto_dentry;
++ inode_t *hidden_sto_dir_inode;
++ dentry_t *hidden_sto_dir_dentry;
++
++ check_mini_fo_dentry(dentry);
++
++ if(dtost(dentry) != MODIFIED ||
++ S_ISDIR(dentry->d_inode->i_mode)) {
++ printk(KERN_CRIT "mini_fo: nondir_mod_to_del: \
++ wrong type or state.\n");
++ err = -1;
++ goto out;
++ }
++
++ hidden_sto_dir_inode = itohi2(dentry->d_parent->d_inode);
++ hidden_sto_dentry = dtohd2(dentry);
++
++ /* was hidden_sto_dir_dentry = lock_parent(hidden_sto_dentry); */
++ hidden_sto_dir_dentry = dget(hidden_sto_dentry->d_parent);
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_lock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ down(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++
++ /* avoid destroying the hidden inode if the file is in use */
++ dget(hidden_sto_dentry);
++ err = vfs_unlink(hidden_sto_dir_inode, hidden_sto_dentry);
++ dput(hidden_sto_dentry);
++ if(!err)
++ d_delete(hidden_sto_dentry);
++
++ /* propagate number of hard-links */
++ dentry->d_inode->i_nlink = itohi2(dentry->d_inode)->i_nlink;
++
++ /* dput base dentry, this will relase the inode and free the
++ * dentry, as we will never need it again. */
++ dput(dtohd(dentry));
++ dtohd(dentry) = NULL;
++ dtost(dentry) = DELETED;
++
++ /* add deleted file to META-file */
++ meta_add_d_entry(dentry->d_parent,
++ dentry->d_name.name,
++ dentry->d_name.len);
++
++ /* was: unlock_dir(hidden_sto_dir_dentry); */
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
++ mutex_unlock(&hidden_sto_dir_dentry->d_inode->i_mutex);
++#else
++ up(&hidden_sto_dir_dentry->d_inode->i_sem);
++#endif
++ dput(hidden_sto_dir_dentry);
++
++ out:
++ return err;
++}
++
++int nondir_unmod_to_del(dentry_t *dentry)
++{
++ int err = 0;
++
++ check_mini_fo_dentry(dentry);
++
++ if(dtost(dentry) != UNMODIFIED ||
++ S_ISDIR(dentry->d_inode->i_mode)) {
++ printk(KERN_CRIT "mini_fo: nondir_unmod_to_del: \
++ wrong type or state.\n");
++ err = -1;
++ goto out;
++ }
++
++ /* next we have to get a negative dentry for the storage file */
++ err = get_neg_sto_dentry(dentry);
++
++ if(err)
++ goto out;
++
++ /* add deleted file to META lists */
++ err = meta_add_d_entry(dentry->d_parent,
++ dentry->d_name.name,
++ dentry->d_name.len);
++
++ if(err)
++ goto out;
++
++ /* dput base dentry, this will relase the inode and free the
++ * dentry, as we will never need it again. */
++ dput(dtohd(dentry));
++ dtohd(dentry) = NULL;
++ dtost(dentry) = DELETED;
++
++ out:
++ return err;
++}
++
++/* bring a dir from state UNMODIFIED to MODIFIED */
++int dir_unmod_to_mod(dentry_t *dentry)
++{
++ int err;
++
++ check_mini_fo_dentry(dentry);
++
++ if(dtost(dentry) != UNMODIFIED ||
++ !S_ISDIR(dentry->d_inode->i_mode)) {
++ printk(KERN_CRIT "mini_fo: dir_unmod_to_mod: \
++ wrong type or state.\n");
++ err = -1;
++ goto out;
++ }
++
++ /* this creates our dir incl. sto. structure */
++ err = build_sto_structure(dentry->d_parent, dentry);
++ if(err) {
++ printk(KERN_CRIT "mini_fo: dir_unmod_to_mod: \
++ build_sto_structure failed.\n");
++ goto out;
++ }
++ out:
++ return err;
++}
++
+Index: linux-2.6.23-rc6/fs/mini_fo/super.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/mini_fo/super.c 2007-09-21 16:24:06.000000000 +0800
+@@ -0,0 +1,281 @@
++/*
++ * Copyright (c) 1997-2003 Erez Zadok
++ * Copyright (c) 2001-2003 Stony Brook University
++ *
++ * For specific licensing information, see the COPYING file distributed with
++ * this package, or get one from ftp://ftp.filesystems.org/pub/fist/COPYING.
++ *
++ * This Copyright notice must be kept intact and distributed with all
++ * fistgen sources INCLUDING sources generated by fistgen.
++ */
++/*
++ * Copyright (C) 2004, 2005 Markus Klotzbuecher <mk@creamnet.de>
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * as published by the Free Software Foundation; either version
++ * 2 of the License, or (at your option) any later version.
++ */
++
++/*
++ * $Id$
++ */
++
++#ifdef HAVE_CONFIG_H
++# include <config.h>
++#endif
++
++#include "fist.h"
++#include "mini_fo.h"
++
++
++STATIC void
++mini_fo_read_inode(inode_t *inode)
++{
++ static struct address_space_operations mini_fo_empty_aops;
++
++ __itopd(inode) = kmalloc(sizeof(struct mini_fo_inode_info), GFP_KERNEL);
++ if (!itopd(inode)) {
++ printk("<0>%s:%s:%d: No kernel memory!\n", __FILE__, __FUNCTION__, __LINE__);
++ ASSERT(NULL);
++ }
++ itohi(inode) = NULL;
++ itohi2(inode) = NULL;
++
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++ inode->i_version++;
++#else
++ inode->i_version = ++event; /* increment inode version */
++#endif
++ inode->i_op = &mini_fo_main_iops;
++ inode->i_fop = &mini_fo_main_fops;
++#if 0
++ /*
++ * XXX: To export a file system via NFS, it has to have the
++ * FS_REQUIRES_DEV flag, so turn it on. But should we inherit it from
++ * the lower file system, or can we allow our file system to be exported
++ * even if the lower one cannot be natively exported.
++ */
++ inode->i_sb->s_type->fs_flags |= FS_REQUIRES_DEV;
++ /*
++ * OK, the above was a hack, which is now turned off because it may
++ * cause a panic/oops on some systems. The correct way to export a
++ * "nodev" filesystem is via using nfs-utils > 1.0 and the "fsid=" export
++ * parameter, which requires 2.4.20 or later.
++ */
++#endif
++ /* I don't think ->a_ops is ever allowed to be NULL */
++ inode->i_mapping->a_ops = &mini_fo_empty_aops;
++}
++
++
++#if defined(FIST_DEBUG) || defined(FIST_FILTER_SCA)
++/*
++ * No need to call write_inode() on the lower inode, as it
++ * will have been marked 'dirty' anyway. But we might need
++ * to write some of our own stuff to disk.
++ */
++STATIC void
++mini_fo_write_inode(inode_t *inode, int sync)
++{
++ print_entry_location();
++ print_exit_location();
++}
++#endif /* defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) */
++
++
++STATIC void
++mini_fo_put_inode(inode_t *inode)
++{
++ /*
++ * This is really funky stuff:
++ * Basically, if i_count == 1, iput will then decrement it and this inode will be destroyed.
++ * It is currently holding a reference to the hidden inode.
++ * Therefore, it needs to release that reference by calling iput on the hidden inode.
++ * iput() _will_ do it for us (by calling our clear_inode), but _only_ if i_nlink == 0.
++ * The problem is, NFS keeps i_nlink == 1 for silly_rename'd files.
++ * So we must for our i_nlink to 0 here to trick iput() into calling our clear_inode.
++ */
++ if (atomic_read(&inode->i_count) == 1)
++ inode->i_nlink = 0;
++}
++
++
++#if defined(FIST_DEBUG) || defined(FIST_FILTER_SCA)
++/*
++ * we now define delete_inode, because there are two VFS paths that may
++ * destroy an inode: one of them calls clear inode before doing everything
++ * else that's needed, and the other is fine. This way we truncate the inode
++ * size (and its pages) and then clear our own inode, which will do an iput
++ * on our and the lower inode.
++ */
++STATIC void
++mini_fo_delete_inode(inode_t *inode)
++{
++ print_entry_location();
++
++ fist_checkinode(inode, "mini_fo_delete_inode IN");
++ inode->i_size = 0; /* every f/s seems to do that */
++ clear_inode(inode);
++
++ print_exit_location();
++}
++#endif /* defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) */
++
++
++/* final actions when unmounting a file system */
++STATIC void
++mini_fo_put_super(super_block_t *sb)
++{
++ if (stopd(sb)) {
++ mntput(stopd(sb)->hidden_mnt);
++ mntput(stopd(sb)->hidden_mnt2);
++
++ /* mk: no! dput(stopd(sb)->base_dir_dentry);
++ dput(stopd(sb)->storage_dir_dentry); */
++
++ kfree(stopd(sb));
++ __stopd(sb) = NULL;
++ }
++}
++
++
++#ifdef NOT_NEEDED
++/*
++ * This is called in do_umount before put_super.
++ * The superblock lock is not held yet.
++ * We probably do not need to define this or call write_super
++ * on the hidden_sb, because sync_supers() will get to hidden_sb
++ * sooner or later. But it is also called from file_fsync()...
++ */
++STATIC void
++mini_fo_write_super(super_block_t *sb)
++{
++ return;
++}
++#endif /* NOT_NEEDED */
++
++
++STATIC int
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++mini_fo_statfs(struct dentry *d, struct kstatfs *buf)
++#elif LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,0)
++mini_fo_statfs(super_block_t *sb, struct kstatfs *buf)
++#else
++mini_fo_statfs(super_block_t *sb, struct statfs *buf)
++#endif
++{
++ int err = 0;
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++ struct dentry *hidden_d;
++
++ hidden_d = dtohd(d);
++ err = vfs_statfs(hidden_d, buf);
++#else
++ super_block_t *hidden_sb;
++
++ hidden_sb = stohs(sb);
++ err = vfs_statfs(hidden_sb, buf);
++#endif
++
++ return err;
++}
++
++
++/*
++ * XXX: not implemented. This is not allowed yet.
++ * Should we call this on the hidden_sb? Probably not.
++ */
++STATIC int
++mini_fo_remount_fs(super_block_t *sb, int *flags, char *data)
++{
++ //printk(KERN_CRIT "mini_fo_remount_fs: WARNING, this function is umimplemented.\n");
++ return -ENOSYS;
++}
++
++
++/*
++ * Called by iput() when the inode reference count reached zero
++ * and the inode is not hashed anywhere. Used to clear anything
++ * that needs to be, before the inode is completely destroyed and put
++ * on the inode free list.
++ */
++STATIC void
++mini_fo_clear_inode(inode_t *inode)
++{
++ /*
++ * Decrement a reference to a hidden_inode, which was incremented
++ * by our read_inode when it was created initially.
++ */
++
++ /* release the wol_list */
++ if(S_ISDIR(inode->i_mode)) {
++ __meta_put_lists(inode);
++ }
++
++ /* mk: fan out fun */
++ if(itohi(inode))
++ iput(itohi(inode));
++ if(itohi2(inode))
++ iput(itohi2(inode));
++
++ // XXX: why this assertion fails?
++ // because it doesn't like us
++ // ASSERT((inode->i_state & I_DIRTY) == 0);
++ kfree(itopd(inode));
++ __itopd(inode) = NULL;
++}
++
++
++/*
++ * Called in do_umount() if the MNT_FORCE flag was used and this
++ * function is defined. See comment in linux/fs/super.c:do_umount().
++ * Used only in nfs, to kill any pending RPC tasks, so that subsequent
++ * code can actually succeed and won't leave tasks that need handling.
++ *
++ * PS. I wonder if this is somehow useful to undo damage that was
++ * left in the kernel after a user level file server (such as amd)
++ * dies.
++ */
++STATIC void
++#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,18)
++mini_fo_umount_begin(struct vfsmount *mnt, int flags)
++{
++ struct vfsmount *hidden_mnt;
++
++ hidden_mnt = stopd(mnt->mnt_sb)->hidden_mnt;
++
++ if (hidden_mnt->mnt_sb->s_op->umount_begin)
++ hidden_mnt->mnt_sb->s_op->umount_begin(hidden_mnt, flags);
++
++}
++#else
++mini_fo_umount_begin(super_block_t *sb)
++{
++ super_block_t *hidden_sb;
++
++ hidden_sb = stohs(sb);
++
++ if (hidden_sb->s_op->umount_begin)
++ hidden_sb->s_op->umount_begin(hidden_sb);
++
++}
++#endif
++
++
++struct super_operations mini_fo_sops =
++{
++ read_inode: mini_fo_read_inode,
++#if defined(FIST_DEBUG) || defined(FIST_FILTER_SCA)
++ write_inode: mini_fo_write_inode,
++#endif /* defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) */
++ put_inode: mini_fo_put_inode,
++#if defined(FIST_DEBUG) || defined(FIST_FILTER_SCA)
++ delete_inode: mini_fo_delete_inode,
++#endif /* defined(FIST_DEBUG) || defined(FIST_FILTER_SCA) */
++ put_super: mini_fo_put_super,
++ statfs: mini_fo_statfs,
++ remount_fs: mini_fo_remount_fs,
++ clear_inode: mini_fo_clear_inode,
++ umount_begin: mini_fo_umount_begin,
++};
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/ieee80211.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/ieee80211.h 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/ieee80211.h 2007-09-21 16:24:07.000000000 +0800
+@@ -106,6 +106,75 @@
+ } __attribute__ ((packed));
+
+
++struct ieee80211_ht_capability {
++ __le16 capabilities_info;
++ u8 mac_ht_params_info;
++ u8 supported_mcs_set[16];
++ __le16 extended_ht_capability_info;
++ __le32 tx_BF_capability_info;
++ u8 antenna_selection_info;
++}__attribute__ ((packed));
++
++struct ieee80211_ht_additional_info {
++ u8 control_chan;
++ u8 ht_param;
++ __le16 operation_mode;
++ __le16 stbc_param;
++ u8 basic_set[16];
++}__attribute__ ((packed));
++
++
++#define IEEE80211_TSINFO_TYPE(a) ((a.byte1 & 0x01) >> 0)
++#define IEEE80211_TSINFO_TSID(a) ((a.byte1 & 0x1E) >> 1)
++#define IEEE80211_TSINFO_DIR(a) ((a.byte1 & 0x60) >> 5)
++#define IEEE80211_TSINFO_POLICY(a) ((a.byte1 & 0x80) >> 7 + \
++ (a.byte2 & 0x01) << 1)
++#define IEEE80211_TSINFO_AGG(a) ((a.byte2 & 0x02) >> 1)
++#define IEEE80211_TSINFO_APSD(a) ((a.byte2 & 0x04) >> 2)
++#define IEEE80211_TSINFO_UP(a) ((a.byte2 & 0x38) >> 3)
++#define IEEE80211_TSINFO_ACK(a) ((a.byte2 & 0xC0) >> 6)
++#define IEEE80211_TSINFO_SCHEDULE(a) ((a.byte3 & 0x01) >> 0)
++
++#define IEEE80211_SET_TSINFO_TYPE(i, d) (i.byte1 |= (d << 0) & 0x01)
++#define IEEE80211_SET_TSINFO_TSID(i, d) (i.byte1 |= (d << 1) & 0x1E)
++#define IEEE80211_SET_TSINFO_DIR(i, d) (i.byte1 |= (d << 5) & 0x60)
++#define IEEE80211_SET_TSINFO_POLICY(i, d) \
++do { \
++ i.byte1 |= (d & 0x01) << 7; \
++ i.byte2 |= (d & 0x02) >> 1; \
++} while(0)
++#define IEEE80211_SET_TSINFO_AGG(i, d) (i.byte2 |= (d << 1) & 0x02)
++#define IEEE80211_SET_TSINFO_APSD(i, d) (i.byte2 |= (d << 2) & 0x04)
++#define IEEE80211_SET_TSINFO_UP(i, d) (i.byte2 |= (d << 3) & 0x38)
++#define IEEE80211_SET_TSINFO_ACK(i, d) (i.byte2 |= (d << 6) & 0xC0)
++#define IEEE80211_SET_TSINFO_SCHEDULE(i, d) (i.byte3 |= (d << 0) & 0x01)
++
++struct ieee80211_ts_info {
++ u8 byte1;
++ u8 byte2;
++ u8 byte3;
++} __attribute__ ((packed));
++
++struct ieee80211_elem_tspec {
++ struct ieee80211_ts_info ts_info;
++ __le16 nominal_msdu_size;
++ __le16 max_msdu_size;
++ __le32 min_service_interval;
++ __le32 max_service_interval;
++ __le32 inactivity_interval;
++ __le32 suspension_interval;
++ __le32 service_start_time;
++ __le32 min_data_rate;
++ __le32 mean_data_rate;
++ __le32 peak_data_rate;
++ __le32 burst_size;
++ __le32 delay_bound;
++ __le32 min_phy_rate;
++ __le16 surplus_band_allow;
++ __le16 medium_time;
++} __attribute__ ((packed));
++
++
+ struct ieee80211_mgmt {
+ __le16 frame_control;
+ __le16 duration;
+@@ -173,9 +242,51 @@
+ struct {
+ u8 action_code;
+ u8 dialog_token;
++ u8 variable[0];
++ } __attribute__ ((packed)) addts_req;
++ struct {
++ u8 action_code;
++ u8 dialog_token;
++ __le16 status_code;
++ u8 variable[0];
++ } __attribute__ ((packed)) addts_resp;
++ struct {
++ u8 action_code;
++ struct ieee80211_ts_info ts_info;
++ __le16 reason_code;
++ } __attribute__ ((packed)) delts;
++ struct {
++ u8 action_code;
++ u8 dialog_token;
+ u8 status_code;
+ u8 variable[0];
+ } __attribute__ ((packed)) wme_action;
++ struct {
++ u8 action_code;
++ u8 dest[6];
++ u8 src[6];
++ __le16 capab_info;
++ __le16 timeout;
++ /* Followed by Supported Rates and
++ * Extended Supported Rates */
++ u8 variable[0];
++ } __attribute__ ((packed)) dls_req;
++ struct {
++ u8 action_code;
++ __le16 status_code;
++ u8 dest[6];
++ u8 src[6];
++ /* Followed by Capability Information,
++ * Supported Rates and Extended
++ * Supported Rates */
++ u8 variable[0];
++ } __attribute__ ((packed)) dls_resp;
++ struct {
++ u8 action_code;
++ u8 dest[6];
++ u8 src[6];
++ __le16 reason_code;
++ } __attribute__ ((packed)) dls_teardown;
+ struct{
+ u8 action_code;
+ u8 element_id;
+@@ -184,6 +295,25 @@
+ u8 new_chan;
+ u8 switch_count;
+ } __attribute__((packed)) chan_switch;
++ struct{
++ u8 action_code;
++ u8 dialog_token;
++ __le16 capab;
++ __le16 timeout;
++ __le16 start_seq_num;
++ } __attribute__((packed)) addba_req;
++ struct{
++ u8 action_code;
++ u8 dialog_token;
++ __le16 status;
++ __le16 capab;
++ __le16 timeout;
++ } __attribute__((packed)) addba_resp;
++ struct{
++ u8 action_code;
++ __le16 params;
++ __le16 reason_code;
++ }__attribute__((packed)) delba;
+ } u;
+ } __attribute__ ((packed)) action;
+ } u;
+@@ -270,6 +400,18 @@
+ WLAN_STATUS_UNSUPP_RSN_VERSION = 44,
+ WLAN_STATUS_INVALID_RSN_IE_CAP = 45,
+ WLAN_STATUS_CIPHER_SUITE_REJECTED = 46,
++ /* 802.11e */
++ WLAN_STATUS_UNSPECIFIED_QOS = 32,
++ WLAN_STATUS_ASSOC_DENIED_NOBANDWIDTH = 33,
++ WLAN_STATUS_ASSOC_DENIED_LOWACK = 34,
++ WLAN_STATUS_ASSOC_DENIED_UNSUPP_QOS = 35,
++ WLAN_STATUS_REQUEST_DECLINED = 37,
++ WLAN_STATUS_INVALID_QOS_PARAM = 38,
++ WLAN_STATUS_CHANGE_TSPEC = 39,
++ WLAN_STATUS_WAIT_TS_DELAY = 47,
++ WLAN_STATUS_NO_DIRECT_LINK = 48,
++ WLAN_STATUS_STA_NOT_PRESENT = 49,
++ WLAN_STATUS_STA_NOT_QSTA = 50,
+ };
+
+
+@@ -300,9 +442,50 @@
+ WLAN_REASON_INVALID_RSN_IE_CAP = 22,
+ WLAN_REASON_IEEE8021X_FAILED = 23,
+ WLAN_REASON_CIPHER_SUITE_REJECTED = 24,
++ /* 802.11e */
++ WLAN_REASON_DISASSOC_UNSPECIFIED_QOS = 32,
++ WLAN_REASON_DISASSOC_QAP_NO_BANDWIDTH = 33,
++ WLAN_REASON_DISASSOC_LOW_ACK = 34,
++ WLAN_REASON_DISASSOC_QAP_EXCEED_TXOP = 35,
++ WLAN_REASON_QSTA_LEAVE_QBSS = 36,
++ WLAN_REASON_QSTA_NOT_USE = 37,
++ WLAN_REASON_QSTA_REQUIRE_SETUP = 38,
++ WLAN_REASON_QSTA_TIMEOUT = 39,
++ WLAN_REASON_QSTA_CIPHER_NOT_SUPP = 45,
+ };
+
+
++/* Category Code */
++enum ieee80211_category {
++ WLAN_CATEGORY_SPECTRUM_MGMT = 0,
++ WLAN_CATEGORY_QOS = 1,
++ WLAN_CATEGORY_DLS = 2,
++ WLAN_CATEGORY_BACK = 3,
++ WLAN_CATEGORY_WMM = 17,
++};
++
++/* QoS Action Code */
++enum ieee80211_qos_actioncode {
++ WLAN_ACTION_QOS_ADDTS_REQ = 0,
++ WLAN_ACTION_QOS_ADDTS_RESP = 1,
++ WLAN_ACTION_QOS_DELTS = 2,
++ WLAN_ACTION_QOS_SCHEDULE = 3,
++};
++
++/* DLS Action Code */
++enum ieee80211_dls_actioncode {
++ WLAN_ACTION_DLS_REQ = 0,
++ WLAN_ACTION_DLS_RESP = 1,
++ WLAN_ACTION_DLS_TEARDOWN = 2,
++};
++
++/* BACK Action Code */
++enum ieee80211_back_actioncode {
++ WLAN_ACTION_ADDBA_REQ = 0,
++ WLAN_ACTION_ADDBA_RESP = 1,
++ WLAN_ACTION_DELBA = 2,
++};
++
+ /* Information Element IDs */
+ enum ieee80211_eid {
+ WLAN_EID_SSID = 0,
+@@ -318,6 +501,15 @@
+ WLAN_EID_HP_PARAMS = 8,
+ WLAN_EID_HP_TABLE = 9,
+ WLAN_EID_REQUEST = 10,
++ /* 802.11e */
++ WLAN_EID_QBSS_LOAD = 11,
++ WLAN_EID_EDCA_PARAM_SET = 12,
++ WLAN_EID_TSPEC = 13,
++ WLAN_EID_TCLAS = 14,
++ WLAN_EID_SCHEDULE = 15,
++ WLAN_EID_TS_DELAY = 43,
++ WLAN_EID_TCLAS_PROCESSING = 44,
++ WLAN_EID_QOS_CAPA = 46,
+ /* 802.11h */
+ WLAN_EID_PWR_CONSTRAINT = 32,
+ WLAN_EID_PWR_CAPABILITY = 33,
+@@ -332,6 +524,9 @@
+ /* 802.11g */
+ WLAN_EID_ERP_INFO = 42,
+ WLAN_EID_EXT_SUPP_RATES = 50,
++ /* 802.11n */
++ WLAN_EID_HT_CAPABILITY = 45,
++ WLAN_EID_HT_EXTRA_INFO = 61,
+ /* 802.11i */
+ WLAN_EID_RSN = 48,
+ WLAN_EID_WPA = 221,
+@@ -340,6 +535,9 @@
+ WLAN_EID_QOS_PARAMETER = 222
+ };
+
++/* 80211n */
++#define IEEE80211_QOS_CONTROL_A_MSDU_PRESENT 0x0080
++
+ /* cipher suite selectors */
+ #define WLAN_CIPHER_SUITE_USE_GROUP 0x000FAC00
+ #define WLAN_CIPHER_SUITE_WEP40 0x000FAC01
+@@ -350,4 +548,37 @@
+
+ #define WLAN_MAX_KEY_LEN 32
+
++enum ieee80211_tsinfo_direction {
++ WLAN_TSINFO_UPLINK = 0,
++ WLAN_TSINFO_DOWNLINK = 1,
++ WLAN_TSINFO_DIRECTLINK = 2,
++ WLAN_TSINFO_BIDIRECTIONAL = 3,
++};
++
++enum ieee80211_tsinfo_access {
++ WLAN_TSINFO_EDCA = 1,
++ WLAN_TSINFO_HCCA = 2,
++ WLAN_TSINFO_HEMM = 3,
++};
++
++enum ieee80211_tsinfo_psb {
++ WLAN_TSINFO_PSB_LEGACY = 0,
++ WLAN_TSINFO_PSB_APSD = 1,
++};
++
++
++/* WI-FI Alliance OUI Type and Subtype */
++enum wifi_oui_type {
++ WIFI_OUI_TYPE_WPA = 1,
++ WIFI_OUI_TYPE_WMM = 2,
++ WIFI_OUI_TYPE_WSC = 4,
++ WIFI_OUI_TYPE_PSD = 6,
++};
++
++enum wifi_oui_stype_wmm {
++ WIFI_OUI_STYPE_WMM_INFO = 0,
++ WIFI_OUI_STYPE_WMM_PARAM = 1,
++ WIFI_OUI_STYPE_WMM_TSPEC = 2,
++};
++
+ #endif /* IEEE80211_H */
+Index: linux-2.6.23-rc6/include/linux/nl80211.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/nl80211.h 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/nl80211.h 2007-09-21 16:24:07.000000000 +0800
+@@ -7,6 +7,217 @@
+ */
+
+ /**
++ * enum nl80211_commands - supported nl80211 commands
++ * @NL80211_CMD_UNSPEC: unspecified command to catch errors
++ * @NL80211_CMD_RENAME_WIPHY: rename a wiphy, needs
++ * %NL80211_ATTR_WIPHY and %NL80211_ATTR_WIPHY_NAME
++ * @NL80211_CMD_WIPHY_NEWNAME: rename notification
++ * @NL80211_CMD_GET_CMDLIST: TO BE DEFINED PROPERLY. currently the code makes
++ * it depend on the wiphy only but it really should depend on the
++ * interface type too....
++ * @NL80211_CMD_NEW_CMDLIST: command list result
++ * @NL80211_CMD_ADD_VIRTUAL_INTERFACE: create a virtual interface for the
++ * wiphy identified by an %NL80211_ATTR_WIPHY attribute with the given
++ * %NL80211_ATTR_IFTYPE and %NL80211_ATTR_IFNAME.
++ * @NL80211_CMD_DEL_VIRTUAL_INTERFACE: destroy a virtual interface identified
++ * by %NL80211_ATTR_IFINDEX.
++ * @NL80211_CMD_CHANGE_VIRTUAL_INTERFACE: change type of virtual interface to
++ * the type given by %NL80211_ATTR_IFTYPE, the interface is identified by
++ * %NL80211_ATTR_IFINDEX.
++ * @NL80211_CMD_GET_WIPHYS: request a list of all wiphys present in the system
++ * @NL80211_CMD_NEW_WIPHYS: returned list of all wiphys
++ * @NL80211_CMD_GET_INTERFACES: request a list of all interfaces belonging to
++ * the wiphy identified by %NL80211_ATTR_WIPHY
++ * @NL80211_CMD_NEW_INTERFACES: result for %NL80211_CMD_GET_INTERFACES
++ * @NL80211_CMD_INITIATE_SCAN: initiate a scan with the passed parameters. THe
++ * parameters may contain %NL80211_ATTR_FLAG_SCAN_ACTIVE,
++ * %NL80211_ATTR_PHYMODE and a list of channels in an
++ * %NL80211_ATTR_CHANNEL_LIST attribute (an array of nested attributes)
++ * containing %NL80211_ATTR_CHANNEL, %NL80211_ATTR_PHYMODE, and possibly
++ * %NL80211_ATTR_FLAG_SCAN_ACTIVE. The outer %NL80211_ATTR_FLAG_SCAN_ACTIVE
++ * is ignored when a channel list is present.
++ * @NL80211_CMD_SCAN_RESULT: scan result, contains an array in
++ * %NL80211_ATTR_BSS_LIST.
++ * @NL80211_CMD_ASSOCIATE: associate with the given parameters
++ * (%NL80211_ATTR_SSID is mandatory, %NL80211_ATTR_TIMEOUT_TU,
++ * %NL80211_ATTR_BSSID, %NL80211_ATTR_CHANNEL, %NL80211_ATTR_PHYMODE,
++ * and %NL80211_ATTR_IE may be given)
++ * @NL80211_CMD_ADD_KEY: add a key with given %NL80211_ATTR_KEY_DATA,
++ * %NL80211_ATTR_KEY_ID, %NL80211_ATTR_KEY_TYPE, %NL80211_ATTR_MAC and
++ * %NL80211_ATTR_KEY_CIPHER attributes.
++ * @NL80211_CMD_DEL_KEY: delete a key identified by %NL80211_ATTR_KEY_ID,
++ * %NL80211_ATTR_KEY_TYPE and %NL80211_ATTR_MAC or all keys.
++ * @__NL80211_CMD_AFTER_LAST: internal use
++ */
++enum nl80211_commands {
++/* don't change the order or add anything inbetween, this is ABI! */
++ NL80211_CMD_UNSPEC,
++ /* %input: wiphy, wiphy_name */
++ NL80211_CMD_RENAME_WIPHY,
++ NL80211_CMD_WIPHY_NEWNAME,
++ /* %input: wiphy|ifindex */
++ NL80211_CMD_GET_CMDLIST,
++ NL80211_CMD_NEW_CMDLIST,
++ /* %input: wiphy, ifname, {iftype} */
++ NL80211_CMD_ADD_VIRTUAL_INTERFACE,
++ /* %input: wiphy, ifindex */
++ NL80211_CMD_DEL_VIRTUAL_INTERFACE,
++ /* %input: ifindex, iftype */
++ NL80211_CMD_CHANGE_VIRTUAL_INTERFACE,
++ /* %input: */
++ NL80211_CMD_GET_WIPHYS,
++ NL80211_CMD_NEW_WIPHYS,
++ /* %input: wiphy */
++ NL80211_CMD_GET_INTERFACES,
++ NL80211_CMD_NEW_INTERFACES,
++ NL80211_CMD_INITIATE_SCAN,
++ NL80211_CMD_SCAN_RESULT,
++ NL80211_CMD_GET_ASSOCIATION,
++ NL80211_CMD_ASSOCIATION_CHANGED,
++ NL80211_CMD_ASSOCIATE,
++ NL80211_CMD_DISASSOCIATE,
++ NL80211_CMD_DEAUTH,
++ NL80211_CMD_GET_AUTH_LIST,
++ NL80211_CMD_NEW_AUTH_LIST,
++ NL80211_CMD_AUTHENTICATION_CHANGED,
++ NL80211_CMD_AP_SET_BEACON,
++ NL80211_CMD_AP_ADD_STA,
++ NL80211_CMD_AP_UPDATE_STA,
++ NL80211_CMD_AP_GET_STA_INFO,
++ NL80211_CMD_AP_SET_RATESETS,
++ NL80211_CMD_ADD_KEY,
++ NL80211_CMD_DEL_KEY,
++
++ /* add commands here */
++
++ /* used to define NL80211_CMD_MAX below */
++ __NL80211_CMD_AFTER_LAST
++};
++#define NL80211_CMD_MAX (__NL80211_CMD_AFTER_LAST - 1)
++
++
++/**
++ * enum nl80211_attrs - nl80211 netlink attributes
++ * @NL80211_ATTR_UNSPEC: unspecified attribute to catch errors
++ * @NL80211_ATTR_IFINDEX: network interface index of the device to operate on
++ * @NL80211_ATTR_IFNAME: network interface name
++ * @NL80211_ATTR_WIPHY: index of wiphy to operate on, cf.
++ * /sys/class/ieee80211/<phyname>/index
++ * @NL80211_ATTR_WIPHY_NAME: wiphy name (used for renaming)
++ * @NL80211_ATTR_CMDS: list of u8's identifying commands a device supports
++ * @NL80211_ATTR_IFTYPE: type of virtual interface, see &enum nl80211_iftype
++ * @NL80211_ATTR_INTERFACE_LIST: interface array, nested netlink attribute
++ * @NL80211_ATTR_WIPHY_LIST: wiphy array, nested netlink attribute
++ * @NL80211_ATTR_BSSID: BSSID (must be 6 bytes)
++ * @NL80211_ATTR_SSID: SSID (1-32 bytes)
++ * @NL80211_ATTR_CHANNEL: channel number
++ * @NL80211_ATTR_PHYMODE: PHY mode, see &enum nl80211_phymode
++ * @NL80211_ATTR_CHANNEL_LIST: netlink nested attribute array containing scan
++ * parameters for channels
++ * @NL80211_ATTR_BSS_LIST: nested attribute containing an array
++ * @NL80211_ATTR_BSSTYPE: BSS type, see &enum nl80211_bsstype
++ * @NL80211_ATTR_BEACON_PERIOD: beacon period
++ * @NL80211_ATTR_DTIM_PERIOD: DTIM period
++ * @NL80211_ATTR_TIMESTAMP: 64-bit timestamp of received beacon/probe response
++ * @NL80211_ATTR_IE: information element(s), maximum length %NL80211_MAX_IE_LEN
++ * @NL80211_ATTR_AUTH_ALGORITHM: authentication algorithm
++ * @NL80211_ATTR_TIMEOUT_TU: timeout in TU (TO BE USED)
++ * @NL80211_ATTR_REASON_CODE: 802.11 reason code
++ * @NL80211_ATTR_ASSOCIATION_ID: association ID (u16, 1-2007)
++ * @NL80211_ATTR_DEAUTHENTICATED: TO BE USED
++ * @NL80211_ATTR_RX_SENSITIVITY: receiver sensitivity in dBm
++ * @NL80211_ATTR_TRANSMIT_POWER: transmit power in mW
++ * @NL80211_ATTR_FRAG_THRESHOLD: fragmentation threshold (bytes)
++ * @NL80211_ATTR_FLAG_SCAN_ACTIVE: netlink flag indiciating active scan
++ * @NL80211_ATTR_KEY_DATA: temporal key data
++ * @NL80211_ATTR_KEY_ID: key ID (u8, 0-3)
++ * @NL80211_ATTR_KEY_TYPE: key type (see &enum nl80211_keytype)
++ * @NL80211_ATTR_MAC: MAC address
++ * @NL80211_ATTR_KEY_CIPHER: key cipher suite (u32)
++ * @__NL80211_ATTR_AFTER_LAST: internal use
++ */
++enum nl80211_attrs {
++/* don't change the order or add anything inbetween, this is ABI! */
++ NL80211_ATTR_UNSPEC,
++ /* %type: u32 */
++ NL80211_ATTR_IFINDEX,
++ /* %type: nulstring */
++ NL80211_ATTR_IFNAME,
++ /* %type: u32 */
++ NL80211_ATTR_WIPHY,
++ /* %type: nulstring */
++ NL80211_ATTR_WIPHY_NAME,
++ NL80211_ATTR_CMDS,
++ /* %type: u32 */
++ NL80211_ATTR_IFTYPE,
++ NL80211_ATTR_INTERFACE_LIST,
++ NL80211_ATTR_WIPHY_LIST,
++ NL80211_ATTR_BSSID,
++ NL80211_ATTR_SSID,
++ NL80211_ATTR_CHANNEL,
++ NL80211_ATTR_PHYMODE,
++ NL80211_ATTR_CHANNEL_LIST,
++ NL80211_ATTR_BSS_LIST,
++ NL80211_ATTR_BSSTYPE,
++ NL80211_ATTR_BEACON_PERIOD,
++ NL80211_ATTR_DTIM_PERIOD,
++ NL80211_ATTR_TIMESTAMP,
++ NL80211_ATTR_IE,
++ NL80211_ATTR_AUTH_ALGORITHM,
++ NL80211_ATTR_TIMEOUT_TU,
++ NL80211_ATTR_REASON_CODE,
++ NL80211_ATTR_ASSOCIATION_ID,
++ NL80211_ATTR_DEAUTHENTICATED,
++ NL80211_ATTR_RX_SENSITIVITY,
++ NL80211_ATTR_TRANSMIT_POWER,
++ NL80211_ATTR_FRAG_THRESHOLD,
++ NL80211_ATTR_FLAG_SCAN_ACTIVE,
++
++ NL80211_ATTR_KEY_DATA,
++ NL80211_ATTR_KEY_ID,
++ NL80211_ATTR_KEY_TYPE,
++ NL80211_ATTR_MAC,
++ NL80211_ATTR_KEY_CIPHER,
++
++ NL80211_ATTR_BEACON_HEAD,
++ NL80211_ATTR_BEACON_TAIL,
++
++ /* add attributes here, update the policy in nl80211.c */
++
++ /* used to define NL80211_ATTR_MAX below */
++ __NL80211_ATTR_AFTER_LAST,
++};
++#define NL80211_ATTR_MAX (__NL80211_ATTR_AFTER_LAST - 1)
++
++/**
++ * enum nl80211_multicast_groups - multicast groups for nl80211
++ * @NL80211_GROUP_CONFIG: members of this group are notified of
++ * configuration changes
++ */
++enum nl80211_multicast_groups {
++ /* be notified of configuration changes like wiphy renames */
++ NL80211_GROUP_CONFIG,
++
++ /* add groups here */
++
++ /* keep last */
++ __NL80211_GROUP_AFTER_LAST
++};
++#define NL80211_GROUP_MAX (__NL80211_GROUP_AFTER_LAST - 1)
++
++/*
++ * maximum length of IE(s) passed in an NL80211_ATTR_IE.
++ * this is an arbitrary limit, 774 means three full-length
++ * IEs would fit... increase if necessary */
++#define NL80211_MAX_IE_LEN 774
++
++/*
++ * maximum number of items in an ATTR_CHANNEL_LIST,
++ * just to avoid too large allocations
++ */
++#define NL80211_MAX_CHANNEL_LIST_ITEM 200
++
++/**
+ * enum nl80211_iftype - (virtual) interface types
+ * @NL80211_IFTYPE_UNSPECIFIED: unspecified type, driver decides
+ * @NL80211_IFTYPE_ADHOC: independent BSS member
+@@ -35,4 +246,56 @@
+ };
+ #define NL80211_IFTYPE_MAX (__NL80211_IFTYPE_AFTER_LAST - 1)
+
++/**
++ * enum nl80211_phymode - PHY modes
++ * @NL80211_PHYMODE_A: 5 GHz PHY
++ * @NL80211_PHYMODE_B: 2.4 GHz PHY (B mode)
++ * @NL80211_PHYMODE_G: 2.4 GHz PHY (G, compatible with B)
++ * @__NL80211_PHYMODE_AFTER_LAST: internal use
++ *
++ * These values are used for %NL80211_ATTR_PHYMODE.
++ */
++enum nl80211_phymode {
++ NL80211_PHYMODE_A,
++ NL80211_PHYMODE_B,
++ NL80211_PHYMODE_G,
++
++ /* keep last */
++ __NL80211_PHYMODE_AFTER_LAST
++};
++#define NL80211_PHYMODE_MAX (__NL80211_PHYMODE_AFTER_LAST - 1)
++
++/**
++ * enum nl80211_bsstype - BSS types
++ * @NL80211_BSSTYPE_INFRASTRUCTURE: infrastructure BSS
++ * @NL80211_BSSTYPE_INDEPENDENT: independent BSS (ad-hoc network)
++ * @__NL80211_BSSTYPE_AFTER_LAST: internal use
++ *
++ * These values are used for %NL80211_ATTR_BSSTYPE.
++ */
++enum nl80211_bsstype {
++ NL80211_BSSTYPE_INFRASTRUCTURE,
++ NL80211_BSSTYPE_INDEPENDENT,
++
++ /* keep last */
++ __NL80211_BSSTYPE_AFTER_LAST
++};
++#define NL80211_BSSTYPE_MAX (__NL80211_BSSTYPE_AFTER_LAST - 1)
++
++/**
++ * enum nl80211_keytype - key types
++ * @NL80211_KEYTYPE_GROUP: group key
++ * @NL80211_KEYTYPE_PAIRWISE: pairwise key
++ * @NL80211_KEYTYPE_PEER: peer key
++ */
++enum nl80211_keytype {
++ NL80211_KEYTYPE_GROUP,
++ NL80211_KEYTYPE_PAIRWISE,
++ NL80211_KEYTYPE_PEER,
++
++ /* keep last */
++ __NL80211_KEYTYPE_AFTER_LAST
++};
++#define NL80211_KEYTYPE_MAX (__NL80211_KEYTYPE_AFTER_LAST - 1)
++
+ #endif /* __LINUX_NL80211_H */
+Index: linux-2.6.23-rc6/include/net/cfg80211.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/net/cfg80211.h 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/include/net/cfg80211.h 2007-09-21 16:24:07.000000000 +0800
+@@ -3,6 +3,7 @@
+
+ #include <linux/netlink.h>
+ #include <linux/skbuff.h>
++#include <linux/nl80211.h>
+ #include <net/genetlink.h>
+
+ /*
+@@ -49,6 +50,69 @@
+ struct ieee80211_radiotap_iterator *iterator);
+
+
++/**
++ * struct scan_channel - describes a single channel to scan
++ * @phymode: PHY mode for this channel
++ * @channel: channel number (1-14, ...)
++ * @active: scan actively or passively on this channel
++ */
++struct scan_channel {
++ enum nl80211_phymode phymode;
++ u32 channel;
++ int active;
++};
++
++/**
++ * struct scan_params - describes scan parameters
++ * @n_channels: number of items in @channels array or -1 to indicate all
++ * channels should be scanned (in that case @channels will be %NULL)
++ * @active: when n_channels is -1 this determines active/passive scanning.
++ * @phymode: when n_channels is -1 this determines PHY mode to scan. It is
++ * not possible to scan different PHY modes in one request w/o giving
++ * a channel list.
++ * @channels: array containing @n_channels &struct scan_channel items
++ */
++struct scan_params {
++ int n_channels;
++ int active;
++ enum nl80211_phymode phymode;
++ struct scan_channel *channels;
++};
++
++/**
++ * struct association_params - describes association parameters
++ * @valid: this member contains flags which items are valid
++ * @bssid: the BSSID of the BSS to associate [%ASSOC_PARAMS_BSSID]
++ * @timeout: timeout (in TU) [%ASSOC_PARAMS_TIMEOUT]
++ * @ie: information element(s) to include in the association frames [%ASSOC_PARAMS_IE]
++ * @ie_len: length of the information element(s)
++ * @ssid: the SSID, always valid.
++ * @ssid_len: length of the SSID
++ */
++struct association_params {
++ u8 *bssid;
++ u32 timeout;
++ u8 *ie;
++ int ie_len;
++ u8 *ssid;
++ int ssid_len;
++
++ unsigned int valid;
++};
++#define ASSOC_PARAMS_TIMEOUT (1<<0)
++
++/**
++ * struct key_params - key information
++ */
++struct key_params {
++ u8 *key;
++ int key_len;
++ int key_id;
++ u32 key_type;
++ u8 *macaddress;
++ u32 cipher;
++};
++
+ /* from net/wireless.h */
+ struct wiphy;
+
+@@ -68,11 +132,62 @@
+ * @add_virtual_intf: create a new virtual interface with the given name
+ *
+ * @del_virtual_intf: remove the virtual interface determined by ifindex.
++ *
++ * @change_virtual_intf: change type of virtual interface
++ *
++ * @associate: associate with given parameters
++ *
++ * @disassociate: disassociate from current AP
++ *
++ * @deauth: deauth from current AP
++ *
++ * @initiate_scan: scan with the given information (see &struct scan_params above)
++ *
++ * @get_association: get BSSID of the BSS that the device is currently
++ * associated to and return 1, or return 0 if not
++ * associated (or a negative error code)
++ * @get_auth_list: get list of BSSIDs of all BSSs the device has
++ * authenticated with, must call next_bssid for each,
++ * next_bssid returns non-zero on error, the given data
++ * is to be passed to that callback
++ * @add_key: add a key using &struct key_params
++ * @del_key: delete a key using info from &struct key_params
+ */
+ struct cfg80211_ops {
+ int (*add_virtual_intf)(struct wiphy *wiphy, char *name,
+- unsigned int type);
++ enum nl80211_iftype type);
+ int (*del_virtual_intf)(struct wiphy *wiphy, int ifindex);
++ int (*change_virtual_intf)(struct wiphy *wiphy, int ifindex,
++ enum nl80211_iftype type);
++
++ int (*associate)(struct wiphy *wiphy, struct net_device *dev,
++ struct association_params *params);
++ int (*disassociate)(struct wiphy *wiphy, struct net_device *dev);
++ int (*deauth)(struct wiphy *wiphy, struct net_device *dev);
++
++
++ int (*initiate_scan)(struct wiphy *wiphy, struct net_device *dev,
++ struct scan_params *params);
++
++
++ int (*get_association)(struct wiphy *wiphy, struct net_device *dev,
++ u8 *bssid);
++
++ int (*get_auth_list)(struct wiphy *wiphy, struct net_device *dev,
++ void *data,
++ int (*next_bssid)(void *data, u8 *bssid));
++
++ int (*add_key)(struct wiphy *wiphy, struct net_device *dev,
++ struct key_params *params);
++ int (*del_key)(struct wiphy *wiphy, struct net_device *dev,
++ struct key_params *params);
+ };
+
++
++/* helper functions specific to nl80211 */
++extern void *nl80211hdr_put(struct sk_buff *skb, u32 pid,
++ u32 seq, int flags, u8 cmd);
++extern void *nl80211msg_new(struct sk_buff **skb, u32 pid,
++ u32 seq, int flags, u8 cmd);
++
+ #endif /* __NET_CFG80211_H */
+Index: linux-2.6.23-rc6/include/net/iw_handler.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/net/iw_handler.h 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/include/net/iw_handler.h 2007-09-21 16:24:07.000000000 +0800
+@@ -431,7 +431,13 @@
+ * Those may be called only within the kernel.
+ */
+
+-/* functions that may be called by driver modules */
++/* First : function strictly used inside the kernel */
++
++/* Handle /proc/net/wireless, called in net/code/dev.c */
++extern int dev_get_wireless_info(char * buffer, char **start, off_t offset,
++ int length);
++
++/* Second : functions that may be called by driver modules */
+
+ /* Send a single event to user space */
+ extern void wireless_send_event(struct net_device * dev,
+Index: linux-2.6.23-rc6/include/net/mac80211.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/net/mac80211.h 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/include/net/mac80211.h 2007-09-21 16:24:07.000000000 +0800
+@@ -300,7 +300,6 @@
+ /* Following five fields are used for IEEE 802.11H */
+ unsigned int radar_detect;
+ unsigned int spect_mgmt;
+- /* All following fields are currently unused. */
+ unsigned int quiet_duration; /* duration of quiet period */
+ unsigned int quiet_offset; /* how far into the beacon is the quiet
+ * period */
+@@ -521,6 +520,9 @@
+ * per-packet RC4 key with each TX frame when doing hwcrypto */
+ #define IEEE80211_HW_TKIP_REQ_PHASE2_KEY (1<<14)
+
++ /* The device capable of supporting 11n */
++#define IEEE80211_HW_SUPPORT_HT_MODE (1<<15)
++
+ u32 flags; /* hardware flags defined above */
+
+ /* Set to the size of a needed device specific skb headroom for TX skbs. */
+@@ -649,8 +651,7 @@
+ * used if the wlan hardware or low-level driver implements PAE.
+ * 80211.o module will anyway filter frames based on authorization
+ * state, so this function pointer can be NULL if low-level driver does
+- * not require event notification about port state changes.
+- * Currently unused. */
++ * not require event notification about port state changes. */
+ int (*set_port_auth)(struct ieee80211_hw *hw, u8 *addr,
+ int authorized);
+
+@@ -702,8 +703,9 @@
+ /* Get statistics of the current TX queue status. This is used to get
+ * number of currently queued packets (queue length), maximum queue
+ * size (limit), and total number of packets sent using each TX queue
+- * (count).
+- * Currently unused. */
++ * (count). This information is used for WMM to find out which TX
++ * queues have room for more packets and by hostapd to provide
++ * statistics about the current queueing state to external programs. */
+ int (*get_tx_stats)(struct ieee80211_hw *hw,
+ struct ieee80211_tx_queue_stats *stats);
+
+@@ -713,12 +715,25 @@
+ * Must be atomic. */
+ u64 (*get_tsf)(struct ieee80211_hw *hw);
+
++ /* Call low level driver with 11n Block Ack action */
++ int (*handle_ba_action)(struct ieee80211_hw *hw,
++ struct ieee80211_mgmt *mgmt);
++
+ /* Reset the TSF timer and allow firmware/hardware to synchronize with
+ * other STAs in the IBSS. This is only used in IBSS mode. This
+ * function is optional if the firmware/hardware takes full care of
+ * TSF synchronization. */
+ void (*reset_tsf)(struct ieee80211_hw *hw);
+
++ /* Configure ht parameters. */
++ int (*conf_ht)(struct ieee80211_hw *hw,
++ struct ieee80211_ht_capability *ht_cap_param,
++ struct ieee80211_ht_additional_info *ht_extra_param);
++
++ /* Get ht capabilities from the device */
++ void (*get_ht_capab)(struct ieee80211_hw *hw,
++ struct ieee80211_ht_capability *ht_cap_param);
++
+ /* Setup beacon data for IBSS beacons. Unlike access point (Master),
+ * IBSS uses a fixed beacon frame which is configured using this
+ * function. This handler is required only for IBSS mode. */
--- /dev/null
+Index: linux-2.6.23-rc6/lib/kobject_uevent.c
+===================================================================
+--- linux-2.6.23-rc6.orig/lib/kobject_uevent.c 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/lib/kobject_uevent.c 2007-09-21 16:24:07.000000000 +0800
+@@ -40,9 +40,22 @@
+ char uevent_helper[UEVENT_HELPER_PATH_LEN] = "/sbin/hotplug";
+ static DEFINE_SPINLOCK(sequence_lock);
+ #if defined(CONFIG_NET)
+-static struct sock *uevent_sock;
++struct sock *uevent_sock = NULL;
++EXPORT_SYMBOL_GPL(uevent_sock);
+ #endif
+
++u64 uevent_next_seqnum(void)
++{
++ u64 seq;
++
++ spin_lock(&sequence_lock);
++ seq = ++uevent_seqnum;
++ spin_unlock(&sequence_lock);
++
++ return seq;
++}
++EXPORT_SYMBOL_GPL(uevent_next_seqnum);
++
+ /**
+ * kobject_uevent_env - send an uevent with environmental data
+ *
+@@ -159,9 +172,7 @@
+ }
+
+ /* we will send an event, request a new sequence number */
+- spin_lock(&sequence_lock);
+- seq = ++uevent_seqnum;
+- spin_unlock(&sequence_lock);
++ seq = uevent_next_seqnum();
+ sprintf(seq_buff, "SEQNUM=%llu", (unsigned long long)seq);
+
+ #if defined(CONFIG_NET)
--- /dev/null
+Index: linux-2.6.23-rc6/drivers/usb/host/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/usb/host/Kconfig 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/drivers/usb/host/Kconfig 2007-09-21 16:24:07.000000000 +0800
+@@ -154,6 +154,19 @@
+ Enables support for PCI-bus plug-in USB controller cards.
+ If unsure, say Y.
+
++config USB_OHCI_HCD_SSB
++ bool "OHCI support for the Broadcom SSB OHCI core (embedded systems only)"
++ depends on USB_OHCI_HCD && ((USB_OHCI_HCD=m && SSB) || (USB_OHCI_HCD=y && SSB=y)) && EXPERIMENTAL
++ default n
++ ---help---
++ Support for the Sonics Silicon Backplane (SSB) attached
++ Broadcom USB OHCI core.
++
++ This device is only present in some embedded devices with
++ Broadcom based SSB bus.
++
++ If unsure, say N.
++
+ config USB_OHCI_BIG_ENDIAN_DESC
+ bool
+ depends on USB_OHCI_HCD
+Index: linux-2.6.23-rc6/drivers/usb/host/ohci-hcd.c
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/usb/host/ohci-hcd.c 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/drivers/usb/host/ohci-hcd.c 2007-09-21 16:24:07.000000000 +0800
+@@ -926,11 +926,17 @@
+ #define PS3_SYSTEM_BUS_DRIVER ps3_ohci_driver
+ #endif
+
++#ifdef CONFIG_USB_OHCI_HCD_SSB
++#include "ohci-ssb.c"
++#define SSB_OHCI_DRIVER ssb_ohci_driver
++#endif
++
+ #if !defined(PCI_DRIVER) && \
+ !defined(PLATFORM_DRIVER) && \
+ !defined(OF_PLATFORM_DRIVER) && \
+ !defined(SA1111_DRIVER) && \
+- !defined(PS3_SYSTEM_BUS_DRIVER)
++ !defined(PS3_SYSTEM_BUS_DRIVER) && \
++ !defined(SSB_OHCI_DRIVER)
+ #error "missing bus glue for ohci-hcd"
+ #endif
+
+@@ -975,10 +981,20 @@
+ goto error_pci;
+ #endif
+
++#ifdef SSB_OHCI_DRIVER
++ retval = ssb_driver_register(&SSB_OHCI_DRIVER);
++ if (retval)
++ goto error_ssb;
++#endif
++
+ return retval;
+
+ /* Error path */
++#ifdef SSB_OHCI_DRIVER
++ error_ssb:
++#endif
+ #ifdef PCI_DRIVER
++ pci_unregister_driver(&PCI_DRIVER);
+ error_pci:
+ #endif
+ #ifdef SA1111_DRIVER
+@@ -1003,6 +1019,9 @@
+
+ static void __exit ohci_hcd_mod_exit(void)
+ {
++#ifdef SSB_OHCI_DRIVER
++ ssb_driver_unregister(&SSB_OHCI_DRIVER);
++#endif
+ #ifdef PCI_DRIVER
+ pci_unregister_driver(&PCI_DRIVER);
+ #endif
--- /dev/null
+Index: linux-2.6.23-rc6/drivers/ssb/driver_pcicore.c
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/ssb/driver_pcicore.c 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/drivers/ssb/driver_pcicore.c 2007-09-21 16:24:08.000000000 +0800
+@@ -93,6 +93,9 @@
+
+ /* Enable PCI bridge BAR1 prefetch and burst */
+ pci_write_config_dword(dev, SSB_BAR1_CONTROL, 3);
++
++ /* Make sure our latency is high enough to handle the devices behind us */
++ pci_write_config_byte(dev, PCI_LATENCY_TIMER, 0xa8);
+ }
+ DECLARE_PCI_FIXUP_EARLY(PCI_ANY_ID, PCI_ANY_ID, ssb_fixup_pcibridge);
+
+@@ -110,7 +113,7 @@
+
+ if (unlikely(pc->cardbusmode && dev > 1))
+ goto out;
+- if (bus == 0) {
++ if (bus == 0) {//FIXME busnumber ok?
+ /* Type 0 transaction */
+ if (unlikely(dev >= SSB_PCI_SLOT_MAX))
+ goto out;
+@@ -224,7 +227,7 @@
+ val = *((const u32 *)buf);
+ break;
+ }
+- writel(*((const u32 *)buf), mmio);
++ writel(val, mmio);
+
+ err = 0;
+ unmap:
+@@ -307,6 +310,8 @@
+ udelay(150);
+ val |= SSB_PCICORE_CTL_RST; /* Deassert RST# */
+ pcicore_write32(pc, SSB_PCICORE_CTL, val);
++ val = SSB_PCICORE_ARBCTL_INTERN;
++ pcicore_write32(pc, SSB_PCICORE_ARBCTL, val);
+ udelay(1);
+
+ //TODO cardbus mode
+@@ -336,6 +341,7 @@
+ * The following needs change, if we want to port hostmode
+ * to non-MIPS platform. */
+ set_io_port_base((unsigned long)ioremap_nocache(SSB_PCI_MEM, 0x04000000));
++ mdelay(300);
+ register_pci_controller(&ssb_pcicore_controller);
+ }
+
--- /dev/null
+Index: linux-2.6.23-rc9/drivers/leds/Kconfig
+===================================================================
+--- linux-2.6.23-rc9.orig/drivers/leds/Kconfig 2007-10-02 12:51:05.000000000 +0800
++++ linux-2.6.23-rc9/drivers/leds/Kconfig 2007-10-03 23:43:31.000000000 +0800
+@@ -133,4 +133,8 @@
+ load average.
+ If unsure, say Y.
+
++config LEDS_TRIGGER_MORSE
++ tristate "LED Morse Trigger"
++ depends on LEDS_TRIGGERS
++
+ endif # NEW_LEDS
+Index: linux-2.6.23-rc9/drivers/leds/Makefile
+===================================================================
+--- linux-2.6.23-rc9.orig/drivers/leds/Makefile 2007-10-02 12:51:05.000000000 +0800
++++ linux-2.6.23-rc9/drivers/leds/Makefile 2007-10-03 23:42:24.000000000 +0800
+@@ -22,3 +22,4 @@
+ obj-$(CONFIG_LEDS_TRIGGER_TIMER) += ledtrig-timer.o
+ obj-$(CONFIG_LEDS_TRIGGER_IDE_DISK) += ledtrig-ide-disk.o
+ obj-$(CONFIG_LEDS_TRIGGER_HEARTBEAT) += ledtrig-heartbeat.o
++obj-$(CONFIG_LEDS_TRIGGER_MORSE) += ledtrig-morse.o
--- /dev/null
+Index: linux-2.6.23-rc6/fs/Kconfig
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/Kconfig 2007-09-21 16:24:06.000000000 +0800
++++ linux-2.6.23-rc6/fs/Kconfig 2007-09-21 16:24:08.000000000 +0800
+@@ -419,6 +419,7 @@
+
+ source "fs/xfs/Kconfig"
+ source "fs/gfs2/Kconfig"
++source "fs/yaffs2/Kconfig"
+
+ config OCFS2_FS
+ tristate "OCFS2 file system support"
+Index: linux-2.6.23-rc6/fs/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/fs/Makefile 2007-09-21 16:24:06.000000000 +0800
++++ linux-2.6.23-rc6/fs/Makefile 2007-09-21 16:24:08.000000000 +0800
+@@ -120,3 +120,4 @@
+ obj-$(CONFIG_DEBUG_FS) += debugfs/
+ obj-$(CONFIG_OCFS2_FS) += ocfs2/
+ obj-$(CONFIG_GFS2_FS) += gfs2/
++obj-$(CONFIG_YAFFS_FS) += yaffs2/
+Index: linux-2.6.23-rc6/fs/yaffs2/Kconfig
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/Kconfig 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,175 @@
++#
++# YAFFS file system configurations
++#
++
++config YAFFS_FS
++ tristate "YAFFS2 file system support"
++ default n
++ depends on MTD
++ select YAFFS_YAFFS1
++ select YAFFS_YAFFS2
++ help
++ YAFFS2, or Yet Another Flash Filing System, is a filing system
++ optimised for NAND Flash chips.
++
++ To compile the YAFFS2 file system support as a module, choose M
++ here: the module will be called yaffs2.
++
++ If unsure, say N.
++
++ Further information on YAFFS2 is available at
++ <http://www.aleph1.co.uk/yaffs/>.
++
++config YAFFS_YAFFS1
++ bool "512 byte / page devices"
++ depends on YAFFS_FS
++ default y
++ help
++ Enable YAFFS1 support -- yaffs for 512 byte / page devices
++
++ Not needed for 2K-page devices.
++
++ If unsure, say Y.
++
++config YAFFS_9BYTE_TAGS
++ bool "Use older-style on-NAND data format with pageStatus byte"
++ depends on YAFFS_YAFFS1
++ default n
++ help
++
++ Older-style on-NAND data format has a "pageStatus" byte to record
++ chunk/page state. This byte is zero when the page is discarded.
++ Choose this option if you have existing on-NAND data using this
++ format that you need to continue to support. New data written
++ also uses the older-style format. Note: Use of this option
++ generally requires that MTD's oob layout be adjusted to use the
++ older-style format. See notes on tags formats and MTD versions.
++
++ If unsure, say N.
++
++config YAFFS_DOES_ECC
++ bool "Lets Yaffs do its own ECC"
++ depends on YAFFS_FS && YAFFS_YAFFS1 && !YAFFS_9BYTE_TAGS
++ default n
++ help
++ This enables Yaffs to use its own ECC functions instead of using
++ the ones from the generic MTD-NAND driver.
++
++ If unsure, say N.
++
++config YAFFS_ECC_WRONG_ORDER
++ bool "Use the same ecc byte order as Steven Hill's nand_ecc.c"
++ depends on YAFFS_FS && YAFFS_DOES_ECC && !YAFFS_9BYTE_TAGS
++ default n
++ help
++ This makes yaffs_ecc.c use the same ecc byte order as Steven
++ Hill's nand_ecc.c. If not set, then you get the same ecc byte
++ order as SmartMedia.
++
++ If unsure, say N.
++
++config YAFFS_YAFFS2
++ bool "2048 byte (or larger) / page devices"
++ depends on YAFFS_FS
++ default y
++ help
++ Enable YAFFS2 support -- yaffs for >= 2K bytes per page devices
++
++ If unsure, say Y.
++
++config YAFFS_AUTO_YAFFS2
++ bool "Autoselect yaffs2 format"
++ depends on YAFFS_YAFFS2
++ default y
++ help
++ Without this, you need to explicitely use yaffs2 as the file
++ system type. With this, you can say "yaffs" and yaffs or yaffs2
++ will be used depending on the device page size (yaffs on
++ 512-byte page devices, yaffs2 on 2K page devices).
++
++ If unsure, say Y.
++
++config YAFFS_DISABLE_LAZY_LOAD
++ bool "Disable lazy loading"
++ depends on YAFFS_YAFFS2
++ default n
++ help
++ "Lazy loading" defers loading file details until they are
++ required. This saves mount time, but makes the first look-up
++ a bit longer.
++
++ Lazy loading will only happen if enabled by this option being 'n'
++ and if the appropriate tags are available, else yaffs2 will
++ automatically fall back to immediate loading and do the right
++ thing.
++
++ Lazy laoding will be required by checkpointing.
++
++ Setting this to 'y' will disable lazy loading.
++
++ If unsure, say N.
++
++config YAFFS_CHECKPOINT_RESERVED_BLOCKS
++ int "Reserved blocks for checkpointing"
++ depends on YAFFS_YAFFS2
++ default 10
++ help
++ Give the number of Blocks to reserve for checkpointing.
++ Checkpointing saves the state at unmount so that mounting is
++ much faster as a scan of all the flash to regenerate this state
++ is not needed. These Blocks are reserved per partition, so if
++ you have very small partitions the default (10) may be a mess
++ for you. You can set this value to 0, but that does not mean
++ checkpointing is disabled at all. There only won't be any
++ specially reserved blocks for checkpointing, so if there is
++ enough free space on the filesystem, it will be used for
++ checkpointing.
++
++ If unsure, leave at default (10), but don't wonder if there are
++ always 2MB used on your large page device partition (10 x 2k
++ pagesize). When using small partitions or when being very small
++ on space, you probably want to set this to zero.
++
++config YAFFS_DISABLE_WIDE_TNODES
++ bool "Turn off wide tnodes"
++ depends on YAFFS_FS
++ default n
++ help
++ Wide tnodes are only used for NAND arrays >=32MB for 512-byte
++ page devices and >=128MB for 2k page devices. They use slightly
++ more RAM but are faster since they eliminate chunk group
++ searching.
++
++ Setting this to 'y' will force tnode width to 16 bits and save
++ memory but make large arrays slower.
++
++ If unsure, say N.
++
++config YAFFS_ALWAYS_CHECK_CHUNK_ERASED
++ bool "Force chunk erase check"
++ depends on YAFFS_FS
++ default n
++ help
++ Normally YAFFS only checks chunks before writing until an erased
++ chunk is found. This helps to detect any partially written
++ chunks that might have happened due to power loss.
++
++ Enabling this forces on the test that chunks are erased in flash
++ before writing to them. This takes more time but is potentially
++ a bit more secure.
++
++ Suggest setting Y during development and ironing out driver
++ issues etc. Suggest setting to N if you want faster writing.
++
++ If unsure, say Y.
++
++config YAFFS_SHORT_NAMES_IN_RAM
++ bool "Cache short names in RAM"
++ depends on YAFFS_FS
++ default y
++ help
++ If this config is set, then short names are stored with the
++ yaffs_Object. This costs an extra 16 bytes of RAM per object,
++ but makes look-ups faster.
++
++ If unsure, say Y.
+Index: linux-2.6.23-rc6/fs/yaffs2/Makefile
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/Makefile 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,11 @@
++#
++# Makefile for the linux YAFFS filesystem routines.
++#
++
++obj-$(CONFIG_YAFFS_FS) += yaffs.o
++
++yaffs-y := yaffs_ecc.o yaffs_fs.o yaffs_guts.o yaffs_checkptrw.o
++yaffs-y += yaffs_packedtags2.o yaffs_nand.o yaffs_qsort.o
++yaffs-y += yaffs_tagscompat.o yaffs_tagsvalidity.o
++yaffs-y += yaffs_mtdif1.o yaffs_packedtags1.o
++yaffs-y += yaffs_mtdif.o yaffs_mtdif2.o
+Index: linux-2.6.23-rc6/fs/yaffs2/devextras.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/devextras.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,264 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++/*
++ * This file is just holds extra declarations used during development.
++ * Most of these are from kernel includes placed here so we can use them in
++ * applications.
++ *
++ */
++
++#ifndef __EXTRAS_H__
++#define __EXTRAS_H__
++
++#if defined WIN32
++#define __inline__ __inline
++#define new newHack
++#endif
++
++#if !(defined __KERNEL__) || (defined WIN32)
++
++/* User space defines */
++
++typedef unsigned char __u8;
++typedef unsigned short __u16;
++typedef unsigned __u32;
++
++/*
++ * Simple doubly linked list implementation.
++ *
++ * Some of the internal functions ("__xxx") are useful when
++ * manipulating whole lists rather than single entries, as
++ * sometimes we already know the next/prev entries and we can
++ * generate better code by using them directly rather than
++ * using the generic single-entry routines.
++ */
++
++#define prefetch(x) 1
++
++struct list_head {
++ struct list_head *next, *prev;
++};
++
++#define LIST_HEAD_INIT(name) { &(name), &(name) }
++
++#define LIST_HEAD(name) \
++ struct list_head name = LIST_HEAD_INIT(name)
++
++#define INIT_LIST_HEAD(ptr) do { \
++ (ptr)->next = (ptr); (ptr)->prev = (ptr); \
++} while (0)
++
++/*
++ * Insert a new entry between two known consecutive entries.
++ *
++ * This is only for internal list manipulation where we know
++ * the prev/next entries already!
++ */
++static __inline__ void __list_add(struct list_head *new,
++ struct list_head *prev,
++ struct list_head *next)
++{
++ next->prev = new;
++ new->next = next;
++ new->prev = prev;
++ prev->next = new;
++}
++
++/**
++ * list_add - add a new entry
++ * @new: new entry to be added
++ * @head: list head to add it after
++ *
++ * Insert a new entry after the specified head.
++ * This is good for implementing stacks.
++ */
++static __inline__ void list_add(struct list_head *new, struct list_head *head)
++{
++ __list_add(new, head, head->next);
++}
++
++/**
++ * list_add_tail - add a new entry
++ * @new: new entry to be added
++ * @head: list head to add it before
++ *
++ * Insert a new entry before the specified head.
++ * This is useful for implementing queues.
++ */
++static __inline__ void list_add_tail(struct list_head *new,
++ struct list_head *head)
++{
++ __list_add(new, head->prev, head);
++}
++
++/*
++ * Delete a list entry by making the prev/next entries
++ * point to each other.
++ *
++ * This is only for internal list manipulation where we know
++ * the prev/next entries already!
++ */
++static __inline__ void __list_del(struct list_head *prev,
++ struct list_head *next)
++{
++ next->prev = prev;
++ prev->next = next;
++}
++
++/**
++ * list_del - deletes entry from list.
++ * @entry: the element to delete from the list.
++ * Note: list_empty on entry does not return true after this, the entry is
++ * in an undefined state.
++ */
++static __inline__ void list_del(struct list_head *entry)
++{
++ __list_del(entry->prev, entry->next);
++}
++
++/**
++ * list_del_init - deletes entry from list and reinitialize it.
++ * @entry: the element to delete from the list.
++ */
++static __inline__ void list_del_init(struct list_head *entry)
++{
++ __list_del(entry->prev, entry->next);
++ INIT_LIST_HEAD(entry);
++}
++
++/**
++ * list_empty - tests whether a list is empty
++ * @head: the list to test.
++ */
++static __inline__ int list_empty(struct list_head *head)
++{
++ return head->next == head;
++}
++
++/**
++ * list_splice - join two lists
++ * @list: the new list to add.
++ * @head: the place to add it in the first list.
++ */
++static __inline__ void list_splice(struct list_head *list,
++ struct list_head *head)
++{
++ struct list_head *first = list->next;
++
++ if (first != list) {
++ struct list_head *last = list->prev;
++ struct list_head *at = head->next;
++
++ first->prev = head;
++ head->next = first;
++
++ last->next = at;
++ at->prev = last;
++ }
++}
++
++/**
++ * list_entry - get the struct for this entry
++ * @ptr: the &struct list_head pointer.
++ * @type: the type of the struct this is embedded in.
++ * @member: the name of the list_struct within the struct.
++ */
++#define list_entry(ptr, type, member) \
++ ((type *)((char *)(ptr)-(unsigned long)(&((type *)0)->member)))
++
++/**
++ * list_for_each - iterate over a list
++ * @pos: the &struct list_head to use as a loop counter.
++ * @head: the head for your list.
++ */
++#define list_for_each(pos, head) \
++ for (pos = (head)->next, prefetch(pos->next); pos != (head); \
++ pos = pos->next, prefetch(pos->next))
++
++/**
++ * list_for_each_safe - iterate over a list safe against removal
++ * of list entry
++ * @pos: the &struct list_head to use as a loop counter.
++ * @n: another &struct list_head to use as temporary storage
++ * @head: the head for your list.
++ */
++#define list_for_each_safe(pos, n, head) \
++ for (pos = (head)->next, n = pos->next; pos != (head); \
++ pos = n, n = pos->next)
++
++/*
++ * File types
++ */
++#define DT_UNKNOWN 0
++#define DT_FIFO 1
++#define DT_CHR 2
++#define DT_DIR 4
++#define DT_BLK 6
++#define DT_REG 8
++#define DT_LNK 10
++#define DT_SOCK 12
++#define DT_WHT 14
++
++#ifndef WIN32
++#include <sys/stat.h>
++#endif
++
++/*
++ * Attribute flags. These should be or-ed together to figure out what
++ * has been changed!
++ */
++#define ATTR_MODE 1
++#define ATTR_UID 2
++#define ATTR_GID 4
++#define ATTR_SIZE 8
++#define ATTR_ATIME 16
++#define ATTR_MTIME 32
++#define ATTR_CTIME 64
++#define ATTR_ATIME_SET 128
++#define ATTR_MTIME_SET 256
++#define ATTR_FORCE 512 /* Not a change, but a change it */
++#define ATTR_ATTR_FLAG 1024
++
++struct iattr {
++ unsigned int ia_valid;
++ unsigned ia_mode;
++ unsigned ia_uid;
++ unsigned ia_gid;
++ unsigned ia_size;
++ unsigned ia_atime;
++ unsigned ia_mtime;
++ unsigned ia_ctime;
++ unsigned int ia_attr_flags;
++};
++
++#define KERN_DEBUG
++
++#else
++
++#ifndef WIN32
++#include <linux/types.h>
++#include <linux/list.h>
++#include <linux/fs.h>
++#include <linux/stat.h>
++#endif
++
++#endif
++
++#if defined WIN32
++#undef new
++#endif
++
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/moduleconfig.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/moduleconfig.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,65 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Martin Fouts <Martin.Fouts@palmsource.com>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_CONFIG_H__
++#define __YAFFS_CONFIG_H__
++
++#ifdef YAFFS_OUT_OF_TREE
++
++/* DO NOT UNSET THESE THREE. YAFFS2 will not compile if you do. */
++#define CONFIG_YAFFS_FS
++#define CONFIG_YAFFS_YAFFS1
++#define CONFIG_YAFFS_YAFFS2
++
++/* These options are independent of each other. Select those that matter. */
++
++/* Default: Not selected */
++/* Meaning: Yaffs does its own ECC, rather than using MTD ECC */
++//#define CONFIG_YAFFS_DOES_ECC
++
++/* Default: Not selected */
++/* Meaning: ECC byte order is 'wrong'. Only meaningful if */
++/* CONFIG_YAFFS_DOES_ECC is set */
++//#define CONFIG_YAFFS_ECC_WRONG_ORDER
++
++/* Default: Selected */
++/* Meaning: Disables testing whether chunks are erased before writing to them*/
++#define CONFIG_YAFFS_DISABLE_CHUNK_ERASED_CHECK
++
++/* Default: Selected */
++/* Meaning: Cache short names, taking more RAM, but faster look-ups */
++#define CONFIG_YAFFS_SHORT_NAMES_IN_RAM
++
++/* Default: 10 */
++/* Meaning: set the count of blocks to reserve for checkpointing */
++#define CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS 10
++
++/*
++Older-style on-NAND data format has a "pageStatus" byte to record
++chunk/page state. This byte is zeroed when the page is discarded.
++Choose this option if you have existing on-NAND data in this format
++that you need to continue to support. New data written also uses the
++older-style format.
++Note: Use of this option generally requires that MTD's oob layout be
++adjusted to use the older-style format. See notes on tags formats and
++MTD versions.
++*/
++/* Default: Not selected */
++/* Meaning: Use older-style on-NAND data format with pageStatus byte */
++#define CONFIG_YAFFS_9BYTE_TAGS
++
++#endif /* YAFFS_OUT_OF_TREE */
++
++#endif /* __YAFFS_CONFIG_H__ */
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_checkptrw.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_checkptrw.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,404 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++const char *yaffs_checkptrw_c_version =
++ "$Id: yaffs_checkptrw.c,v 1.14 2007-05-15 20:07:40 charles Exp $";
++
++
++#include "yaffs_checkptrw.h"
++
++
++static int yaffs_CheckpointSpaceOk(yaffs_Device *dev)
++{
++
++ int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
++
++ T(YAFFS_TRACE_CHECKPOINT,
++ (TSTR("checkpt blocks available = %d" TENDSTR),
++ blocksAvailable));
++
++
++ return (blocksAvailable <= 0) ? 0 : 1;
++}
++
++
++static int yaffs_CheckpointErase(yaffs_Device *dev)
++{
++
++ int i;
++
++
++ if(!dev->eraseBlockInNAND)
++ return 0;
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("checking blocks %d to %d"TENDSTR),
++ dev->internalStartBlock,dev->internalEndBlock));
++
++ for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
++ if(bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("erasing checkpt block %d"TENDSTR),i));
++ if(dev->eraseBlockInNAND(dev,i- dev->blockOffset /* realign */)){
++ bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
++ dev->nErasedBlocks++;
++ dev->nFreeChunks += dev->nChunksPerBlock;
++ }
++ else {
++ dev->markNANDBlockBad(dev,i);
++ bi->blockState = YAFFS_BLOCK_STATE_DEAD;
++ }
++ }
++ }
++
++ dev->blocksInCheckpoint = 0;
++
++ return 1;
++}
++
++
++static void yaffs_CheckpointFindNextErasedBlock(yaffs_Device *dev)
++{
++ int i;
++ int blocksAvailable = dev->nErasedBlocks - dev->nReservedBlocks;
++ T(YAFFS_TRACE_CHECKPOINT,
++ (TSTR("allocating checkpt block: erased %d reserved %d avail %d next %d "TENDSTR),
++ dev->nErasedBlocks,dev->nReservedBlocks,blocksAvailable,dev->checkpointNextBlock));
++
++ if(dev->checkpointNextBlock >= 0 &&
++ dev->checkpointNextBlock <= dev->internalEndBlock &&
++ blocksAvailable > 0){
++
++ for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){
++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
++ if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY){
++ dev->checkpointNextBlock = i + 1;
++ dev->checkpointCurrentBlock = i;
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("allocating checkpt block %d"TENDSTR),i));
++ return;
++ }
++ }
++ }
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("out of checkpt blocks"TENDSTR)));
++
++ dev->checkpointNextBlock = -1;
++ dev->checkpointCurrentBlock = -1;
++}
++
++static void yaffs_CheckpointFindNextCheckpointBlock(yaffs_Device *dev)
++{
++ int i;
++ yaffs_ExtendedTags tags;
++
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: start: blocks %d next %d" TENDSTR),
++ dev->blocksInCheckpoint, dev->checkpointNextBlock));
++
++ if(dev->blocksInCheckpoint < dev->checkpointMaxBlocks)
++ for(i = dev->checkpointNextBlock; i <= dev->internalEndBlock; i++){
++ int chunk = i * dev->nChunksPerBlock;
++ int realignedChunk = chunk - dev->chunkOffset;
++
++ dev->readChunkWithTagsFromNAND(dev,realignedChunk,NULL,&tags);
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("find next checkpt block: search: block %d oid %d seq %d eccr %d" TENDSTR),
++ i, tags.objectId,tags.sequenceNumber,tags.eccResult));
++
++ if(tags.sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA){
++ /* Right kind of block */
++ dev->checkpointNextBlock = tags.objectId;
++ dev->checkpointCurrentBlock = i;
++ dev->checkpointBlockList[dev->blocksInCheckpoint] = i;
++ dev->blocksInCheckpoint++;
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("found checkpt block %d"TENDSTR),i));
++ return;
++ }
++ }
++
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("found no more checkpt blocks"TENDSTR)));
++
++ dev->checkpointNextBlock = -1;
++ dev->checkpointCurrentBlock = -1;
++}
++
++
++int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting)
++{
++
++ /* Got the functions we need? */
++ if (!dev->writeChunkWithTagsToNAND ||
++ !dev->readChunkWithTagsFromNAND ||
++ !dev->eraseBlockInNAND ||
++ !dev->markNANDBlockBad)
++ return 0;
++
++ if(forWriting && !yaffs_CheckpointSpaceOk(dev))
++ return 0;
++
++ if(!dev->checkpointBuffer)
++ dev->checkpointBuffer = YMALLOC_DMA(dev->nDataBytesPerChunk);
++ if(!dev->checkpointBuffer)
++ return 0;
++
++
++ dev->checkpointPageSequence = 0;
++
++ dev->checkpointOpenForWrite = forWriting;
++
++ dev->checkpointByteCount = 0;
++ dev->checkpointSum = 0;
++ dev->checkpointXor = 0;
++ dev->checkpointCurrentBlock = -1;
++ dev->checkpointCurrentChunk = -1;
++ dev->checkpointNextBlock = dev->internalStartBlock;
++
++ /* Erase all the blocks in the checkpoint area */
++ if(forWriting){
++ memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
++ dev->checkpointByteOffset = 0;
++ return yaffs_CheckpointErase(dev);
++
++
++ } else {
++ int i;
++ /* Set to a value that will kick off a read */
++ dev->checkpointByteOffset = dev->nDataBytesPerChunk;
++ /* A checkpoint block list of 1 checkpoint block per 16 block is (hopefully)
++ * going to be way more than we need */
++ dev->blocksInCheckpoint = 0;
++ dev->checkpointMaxBlocks = (dev->internalEndBlock - dev->internalStartBlock)/16 + 2;
++ dev->checkpointBlockList = YMALLOC(sizeof(int) * dev->checkpointMaxBlocks);
++ for(i = 0; i < dev->checkpointMaxBlocks; i++)
++ dev->checkpointBlockList[i] = -1;
++ }
++
++ return 1;
++}
++
++int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum)
++{
++ __u32 compositeSum;
++ compositeSum = (dev->checkpointSum << 8) | (dev->checkpointXor & 0xFF);
++ *sum = compositeSum;
++ return 1;
++}
++
++static int yaffs_CheckpointFlushBuffer(yaffs_Device *dev)
++{
++
++ int chunk;
++ int realignedChunk;
++
++ yaffs_ExtendedTags tags;
++
++ if(dev->checkpointCurrentBlock < 0){
++ yaffs_CheckpointFindNextErasedBlock(dev);
++ dev->checkpointCurrentChunk = 0;
++ }
++
++ if(dev->checkpointCurrentBlock < 0)
++ return 0;
++
++ tags.chunkDeleted = 0;
++ tags.objectId = dev->checkpointNextBlock; /* Hint to next place to look */
++ tags.chunkId = dev->checkpointPageSequence + 1;
++ tags.sequenceNumber = YAFFS_SEQUENCE_CHECKPOINT_DATA;
++ tags.byteCount = dev->nDataBytesPerChunk;
++ if(dev->checkpointCurrentChunk == 0){
++ /* First chunk we write for the block? Set block state to
++ checkpoint */
++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,dev->checkpointCurrentBlock);
++ bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
++ dev->blocksInCheckpoint++;
++ }
++
++ chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock + dev->checkpointCurrentChunk;
++
++
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint wite buffer nand %d(%d:%d) objid %d chId %d" TENDSTR),
++ chunk, dev->checkpointCurrentBlock, dev->checkpointCurrentChunk,tags.objectId,tags.chunkId));
++
++ realignedChunk = chunk - dev->chunkOffset;
++
++ dev->writeChunkWithTagsToNAND(dev,realignedChunk,dev->checkpointBuffer,&tags);
++ dev->checkpointByteOffset = 0;
++ dev->checkpointPageSequence++;
++ dev->checkpointCurrentChunk++;
++ if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock){
++ dev->checkpointCurrentChunk = 0;
++ dev->checkpointCurrentBlock = -1;
++ }
++ memset(dev->checkpointBuffer,0,dev->nDataBytesPerChunk);
++
++ return 1;
++}
++
++
++int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes)
++{
++ int i=0;
++ int ok = 1;
++
++
++ __u8 * dataBytes = (__u8 *)data;
++
++
++
++ if(!dev->checkpointBuffer)
++ return 0;
++
++ if(!dev->checkpointOpenForWrite)
++ return -1;
++
++ while(i < nBytes && ok) {
++
++
++
++ dev->checkpointBuffer[dev->checkpointByteOffset] = *dataBytes ;
++ dev->checkpointSum += *dataBytes;
++ dev->checkpointXor ^= *dataBytes;
++
++ dev->checkpointByteOffset++;
++ i++;
++ dataBytes++;
++ dev->checkpointByteCount++;
++
++
++ if(dev->checkpointByteOffset < 0 ||
++ dev->checkpointByteOffset >= dev->nDataBytesPerChunk)
++ ok = yaffs_CheckpointFlushBuffer(dev);
++
++ }
++
++ return i;
++}
++
++int yaffs_CheckpointRead(yaffs_Device *dev, void *data, int nBytes)
++{
++ int i=0;
++ int ok = 1;
++ yaffs_ExtendedTags tags;
++
++
++ int chunk;
++ int realignedChunk;
++
++ __u8 *dataBytes = (__u8 *)data;
++
++ if(!dev->checkpointBuffer)
++ return 0;
++
++ if(dev->checkpointOpenForWrite)
++ return -1;
++
++ while(i < nBytes && ok) {
++
++
++ if(dev->checkpointByteOffset < 0 ||
++ dev->checkpointByteOffset >= dev->nDataBytesPerChunk) {
++
++ if(dev->checkpointCurrentBlock < 0){
++ yaffs_CheckpointFindNextCheckpointBlock(dev);
++ dev->checkpointCurrentChunk = 0;
++ }
++
++ if(dev->checkpointCurrentBlock < 0)
++ ok = 0;
++ else {
++
++ chunk = dev->checkpointCurrentBlock * dev->nChunksPerBlock +
++ dev->checkpointCurrentChunk;
++
++ realignedChunk = chunk - dev->chunkOffset;
++
++ /* read in the next chunk */
++ /* printf("read checkpoint page %d\n",dev->checkpointPage); */
++ dev->readChunkWithTagsFromNAND(dev, realignedChunk,
++ dev->checkpointBuffer,
++ &tags);
++
++ if(tags.chunkId != (dev->checkpointPageSequence + 1) ||
++ tags.sequenceNumber != YAFFS_SEQUENCE_CHECKPOINT_DATA)
++ ok = 0;
++
++ dev->checkpointByteOffset = 0;
++ dev->checkpointPageSequence++;
++ dev->checkpointCurrentChunk++;
++
++ if(dev->checkpointCurrentChunk >= dev->nChunksPerBlock)
++ dev->checkpointCurrentBlock = -1;
++ }
++ }
++
++ if(ok){
++ *dataBytes = dev->checkpointBuffer[dev->checkpointByteOffset];
++ dev->checkpointSum += *dataBytes;
++ dev->checkpointXor ^= *dataBytes;
++ dev->checkpointByteOffset++;
++ i++;
++ dataBytes++;
++ dev->checkpointByteCount++;
++ }
++ }
++
++ return i;
++}
++
++int yaffs_CheckpointClose(yaffs_Device *dev)
++{
++
++ if(dev->checkpointOpenForWrite){
++ if(dev->checkpointByteOffset != 0)
++ yaffs_CheckpointFlushBuffer(dev);
++ } else {
++ int i;
++ for(i = 0; i < dev->blocksInCheckpoint && dev->checkpointBlockList[i] >= 0; i++){
++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,dev->checkpointBlockList[i]);
++ if(bi->blockState == YAFFS_BLOCK_STATE_EMPTY)
++ bi->blockState = YAFFS_BLOCK_STATE_CHECKPOINT;
++ else {
++ // Todo this looks odd...
++ }
++ }
++ YFREE(dev->checkpointBlockList);
++ dev->checkpointBlockList = NULL;
++ }
++
++ dev->nFreeChunks -= dev->blocksInCheckpoint * dev->nChunksPerBlock;
++ dev->nErasedBlocks -= dev->blocksInCheckpoint;
++
++
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint byte count %d" TENDSTR),
++ dev->checkpointByteCount));
++
++ if(dev->checkpointBuffer){
++ /* free the buffer */
++ YFREE(dev->checkpointBuffer);
++ dev->checkpointBuffer = NULL;
++ return 1;
++ }
++ else
++ return 0;
++
++}
++
++int yaffs_CheckpointInvalidateStream(yaffs_Device *dev)
++{
++ /* Erase the first checksum block */
++
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("checkpoint invalidate"TENDSTR)));
++
++ if(!yaffs_CheckpointSpaceOk(dev))
++ return 0;
++
++ return yaffs_CheckpointErase(dev);
++}
++
++
++
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_checkptrw.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_checkptrw.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,35 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_CHECKPTRW_H__
++#define __YAFFS_CHECKPTRW_H__
++
++#include "yaffs_guts.h"
++
++int yaffs_CheckpointOpen(yaffs_Device *dev, int forWriting);
++
++int yaffs_CheckpointWrite(yaffs_Device *dev,const void *data, int nBytes);
++
++int yaffs_CheckpointRead(yaffs_Device *dev,void *data, int nBytes);
++
++int yaffs_GetCheckpointSum(yaffs_Device *dev, __u32 *sum);
++
++int yaffs_CheckpointClose(yaffs_Device *dev);
++
++int yaffs_CheckpointInvalidateStream(yaffs_Device *dev);
++
++
++#endif
++
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_ecc.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_ecc.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,331 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/*
++ * This code implements the ECC algorithm used in SmartMedia.
++ *
++ * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes.
++ * The two unused bit are set to 1.
++ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC
++ * blocks are used on a 512-byte NAND page.
++ *
++ */
++
++/* Table generated by gen-ecc.c
++ * Using a table means we do not have to calculate p1..p4 and p1'..p4'
++ * for each byte of data. These are instead provided in a table in bits7..2.
++ * Bit 0 of each entry indicates whether the entry has an odd or even parity, and therefore
++ * this bytes influence on the line parity.
++ */
++
++const char *yaffs_ecc_c_version =
++ "$Id: yaffs_ecc.c,v 1.9 2007-02-14 01:09:06 wookey Exp $";
++
++#include "yportenv.h"
++
++#include "yaffs_ecc.h"
++
++static const unsigned char column_parity_table[] = {
++ 0x00, 0x55, 0x59, 0x0c, 0x65, 0x30, 0x3c, 0x69,
++ 0x69, 0x3c, 0x30, 0x65, 0x0c, 0x59, 0x55, 0x00,
++ 0x95, 0xc0, 0xcc, 0x99, 0xf0, 0xa5, 0xa9, 0xfc,
++ 0xfc, 0xa9, 0xa5, 0xf0, 0x99, 0xcc, 0xc0, 0x95,
++ 0x99, 0xcc, 0xc0, 0x95, 0xfc, 0xa9, 0xa5, 0xf0,
++ 0xf0, 0xa5, 0xa9, 0xfc, 0x95, 0xc0, 0xcc, 0x99,
++ 0x0c, 0x59, 0x55, 0x00, 0x69, 0x3c, 0x30, 0x65,
++ 0x65, 0x30, 0x3c, 0x69, 0x00, 0x55, 0x59, 0x0c,
++ 0xa5, 0xf0, 0xfc, 0xa9, 0xc0, 0x95, 0x99, 0xcc,
++ 0xcc, 0x99, 0x95, 0xc0, 0xa9, 0xfc, 0xf0, 0xa5,
++ 0x30, 0x65, 0x69, 0x3c, 0x55, 0x00, 0x0c, 0x59,
++ 0x59, 0x0c, 0x00, 0x55, 0x3c, 0x69, 0x65, 0x30,
++ 0x3c, 0x69, 0x65, 0x30, 0x59, 0x0c, 0x00, 0x55,
++ 0x55, 0x00, 0x0c, 0x59, 0x30, 0x65, 0x69, 0x3c,
++ 0xa9, 0xfc, 0xf0, 0xa5, 0xcc, 0x99, 0x95, 0xc0,
++ 0xc0, 0x95, 0x99, 0xcc, 0xa5, 0xf0, 0xfc, 0xa9,
++ 0xa9, 0xfc, 0xf0, 0xa5, 0xcc, 0x99, 0x95, 0xc0,
++ 0xc0, 0x95, 0x99, 0xcc, 0xa5, 0xf0, 0xfc, 0xa9,
++ 0x3c, 0x69, 0x65, 0x30, 0x59, 0x0c, 0x00, 0x55,
++ 0x55, 0x00, 0x0c, 0x59, 0x30, 0x65, 0x69, 0x3c,
++ 0x30, 0x65, 0x69, 0x3c, 0x55, 0x00, 0x0c, 0x59,
++ 0x59, 0x0c, 0x00, 0x55, 0x3c, 0x69, 0x65, 0x30,
++ 0xa5, 0xf0, 0xfc, 0xa9, 0xc0, 0x95, 0x99, 0xcc,
++ 0xcc, 0x99, 0x95, 0xc0, 0xa9, 0xfc, 0xf0, 0xa5,
++ 0x0c, 0x59, 0x55, 0x00, 0x69, 0x3c, 0x30, 0x65,
++ 0x65, 0x30, 0x3c, 0x69, 0x00, 0x55, 0x59, 0x0c,
++ 0x99, 0xcc, 0xc0, 0x95, 0xfc, 0xa9, 0xa5, 0xf0,
++ 0xf0, 0xa5, 0xa9, 0xfc, 0x95, 0xc0, 0xcc, 0x99,
++ 0x95, 0xc0, 0xcc, 0x99, 0xf0, 0xa5, 0xa9, 0xfc,
++ 0xfc, 0xa9, 0xa5, 0xf0, 0x99, 0xcc, 0xc0, 0x95,
++ 0x00, 0x55, 0x59, 0x0c, 0x65, 0x30, 0x3c, 0x69,
++ 0x69, 0x3c, 0x30, 0x65, 0x0c, 0x59, 0x55, 0x00,
++};
++
++/* Count the bits in an unsigned char or a U32 */
++
++static int yaffs_CountBits(unsigned char x)
++{
++ int r = 0;
++ while (x) {
++ if (x & 1)
++ r++;
++ x >>= 1;
++ }
++ return r;
++}
++
++static int yaffs_CountBits32(unsigned x)
++{
++ int r = 0;
++ while (x) {
++ if (x & 1)
++ r++;
++ x >>= 1;
++ }
++ return r;
++}
++
++/* Calculate the ECC for a 256-byte block of data */
++void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc)
++{
++ unsigned int i;
++
++ unsigned char col_parity = 0;
++ unsigned char line_parity = 0;
++ unsigned char line_parity_prime = 0;
++ unsigned char t;
++ unsigned char b;
++
++ for (i = 0; i < 256; i++) {
++ b = column_parity_table[*data++];
++ col_parity ^= b;
++
++ if (b & 0x01) // odd number of bits in the byte
++ {
++ line_parity ^= i;
++ line_parity_prime ^= ~i;
++ }
++
++ }
++
++ ecc[2] = (~col_parity) | 0x03;
++
++ t = 0;
++ if (line_parity & 0x80)
++ t |= 0x80;
++ if (line_parity_prime & 0x80)
++ t |= 0x40;
++ if (line_parity & 0x40)
++ t |= 0x20;
++ if (line_parity_prime & 0x40)
++ t |= 0x10;
++ if (line_parity & 0x20)
++ t |= 0x08;
++ if (line_parity_prime & 0x20)
++ t |= 0x04;
++ if (line_parity & 0x10)
++ t |= 0x02;
++ if (line_parity_prime & 0x10)
++ t |= 0x01;
++ ecc[1] = ~t;
++
++ t = 0;
++ if (line_parity & 0x08)
++ t |= 0x80;
++ if (line_parity_prime & 0x08)
++ t |= 0x40;
++ if (line_parity & 0x04)
++ t |= 0x20;
++ if (line_parity_prime & 0x04)
++ t |= 0x10;
++ if (line_parity & 0x02)
++ t |= 0x08;
++ if (line_parity_prime & 0x02)
++ t |= 0x04;
++ if (line_parity & 0x01)
++ t |= 0x02;
++ if (line_parity_prime & 0x01)
++ t |= 0x01;
++ ecc[0] = ~t;
++
++#ifdef CONFIG_YAFFS_ECC_WRONG_ORDER
++ // Swap the bytes into the wrong order
++ t = ecc[0];
++ ecc[0] = ecc[1];
++ ecc[1] = t;
++#endif
++}
++
++
++/* Correct the ECC on a 256 byte block of data */
++
++int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
++ const unsigned char *test_ecc)
++{
++ unsigned char d0, d1, d2; /* deltas */
++
++ d0 = read_ecc[0] ^ test_ecc[0];
++ d1 = read_ecc[1] ^ test_ecc[1];
++ d2 = read_ecc[2] ^ test_ecc[2];
++
++ if ((d0 | d1 | d2) == 0)
++ return 0; /* no error */
++
++ if (((d0 ^ (d0 >> 1)) & 0x55) == 0x55 &&
++ ((d1 ^ (d1 >> 1)) & 0x55) == 0x55 &&
++ ((d2 ^ (d2 >> 1)) & 0x54) == 0x54) {
++ /* Single bit (recoverable) error in data */
++
++ unsigned byte;
++ unsigned bit;
++
++#ifdef CONFIG_YAFFS_ECC_WRONG_ORDER
++ // swap the bytes to correct for the wrong order
++ unsigned char t;
++
++ t = d0;
++ d0 = d1;
++ d1 = t;
++#endif
++
++ bit = byte = 0;
++
++ if (d1 & 0x80)
++ byte |= 0x80;
++ if (d1 & 0x20)
++ byte |= 0x40;
++ if (d1 & 0x08)
++ byte |= 0x20;
++ if (d1 & 0x02)
++ byte |= 0x10;
++ if (d0 & 0x80)
++ byte |= 0x08;
++ if (d0 & 0x20)
++ byte |= 0x04;
++ if (d0 & 0x08)
++ byte |= 0x02;
++ if (d0 & 0x02)
++ byte |= 0x01;
++
++ if (d2 & 0x80)
++ bit |= 0x04;
++ if (d2 & 0x20)
++ bit |= 0x02;
++ if (d2 & 0x08)
++ bit |= 0x01;
++
++ data[byte] ^= (1 << bit);
++
++ return 1; /* Corrected the error */
++ }
++
++ if ((yaffs_CountBits(d0) +
++ yaffs_CountBits(d1) +
++ yaffs_CountBits(d2)) == 1) {
++ /* Reccoverable error in ecc */
++
++ read_ecc[0] = test_ecc[0];
++ read_ecc[1] = test_ecc[1];
++ read_ecc[2] = test_ecc[2];
++
++ return 1; /* Corrected the error */
++ }
++
++ /* Unrecoverable error */
++
++ return -1;
++
++}
++
++
++/*
++ * ECCxxxOther does ECC calcs on arbitrary n bytes of data
++ */
++void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
++ yaffs_ECCOther * eccOther)
++{
++ unsigned int i;
++
++ unsigned char col_parity = 0;
++ unsigned line_parity = 0;
++ unsigned line_parity_prime = 0;
++ unsigned char b;
++
++ for (i = 0; i < nBytes; i++) {
++ b = column_parity_table[*data++];
++ col_parity ^= b;
++
++ if (b & 0x01) {
++ /* odd number of bits in the byte */
++ line_parity ^= i;
++ line_parity_prime ^= ~i;
++ }
++
++ }
++
++ eccOther->colParity = (col_parity >> 2) & 0x3f;
++ eccOther->lineParity = line_parity;
++ eccOther->lineParityPrime = line_parity_prime;
++}
++
++int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
++ yaffs_ECCOther * read_ecc,
++ const yaffs_ECCOther * test_ecc)
++{
++ unsigned char cDelta; /* column parity delta */
++ unsigned lDelta; /* line parity delta */
++ unsigned lDeltaPrime; /* line parity delta */
++ unsigned bit;
++
++ cDelta = read_ecc->colParity ^ test_ecc->colParity;
++ lDelta = read_ecc->lineParity ^ test_ecc->lineParity;
++ lDeltaPrime = read_ecc->lineParityPrime ^ test_ecc->lineParityPrime;
++
++ if ((cDelta | lDelta | lDeltaPrime) == 0)
++ return 0; /* no error */
++
++ if (lDelta == ~lDeltaPrime &&
++ (((cDelta ^ (cDelta >> 1)) & 0x15) == 0x15))
++ {
++ /* Single bit (recoverable) error in data */
++
++ bit = 0;
++
++ if (cDelta & 0x20)
++ bit |= 0x04;
++ if (cDelta & 0x08)
++ bit |= 0x02;
++ if (cDelta & 0x02)
++ bit |= 0x01;
++
++ if(lDelta >= nBytes)
++ return -1;
++
++ data[lDelta] ^= (1 << bit);
++
++ return 1; /* corrected */
++ }
++
++ if ((yaffs_CountBits32(lDelta) + yaffs_CountBits32(lDeltaPrime) +
++ yaffs_CountBits(cDelta)) == 1) {
++ /* Reccoverable error in ecc */
++
++ *read_ecc = *test_ecc;
++ return 1; /* corrected */
++ }
++
++ /* Unrecoverable error */
++
++ return -1;
++
++}
++
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_ecc.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_ecc.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,44 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++ /*
++ * This code implements the ECC algorithm used in SmartMedia.
++ *
++ * The ECC comprises 22 bits of parity information and is stuffed into 3 bytes.
++ * The two unused bit are set to 1.
++ * The ECC can correct single bit errors in a 256-byte page of data. Thus, two such ECC
++ * blocks are used on a 512-byte NAND page.
++ *
++ */
++
++#ifndef __YAFFS_ECC_H__
++#define __YAFFS_ECC_H__
++
++typedef struct {
++ unsigned char colParity;
++ unsigned lineParity;
++ unsigned lineParityPrime;
++} yaffs_ECCOther;
++
++void yaffs_ECCCalculate(const unsigned char *data, unsigned char *ecc);
++int yaffs_ECCCorrect(unsigned char *data, unsigned char *read_ecc,
++ const unsigned char *test_ecc);
++
++void yaffs_ECCCalculateOther(const unsigned char *data, unsigned nBytes,
++ yaffs_ECCOther * ecc);
++int yaffs_ECCCorrectOther(unsigned char *data, unsigned nBytes,
++ yaffs_ECCOther * read_ecc,
++ const yaffs_ECCOther * test_ecc);
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_fs.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_fs.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,2278 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ * Acknowledgements:
++ * Luc van OostenRyck for numerous patches.
++ * Nick Bane for numerous patches.
++ * Nick Bane for 2.5/2.6 integration.
++ * Andras Toth for mknod rdev issue.
++ * Michael Fischer for finding the problem with inode inconsistency.
++ * Some code bodily lifted from JFFS
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/*
++ *
++ * This is the file system front-end to YAFFS that hooks it up to
++ * the VFS.
++ *
++ * Special notes:
++ * >> 2.4: sb->u.generic_sbp points to the yaffs_Device associated with
++ * this superblock
++ * >> 2.6: sb->s_fs_info points to the yaffs_Device associated with this
++ * superblock
++ * >> inode->u.generic_ip points to the associated yaffs_Object.
++ */
++
++const char *yaffs_fs_c_version =
++ "$Id: yaffs_fs.c,v 1.60 2007-05-15 20:07:40 charles Exp $";
++extern const char *yaffs_guts_c_version;
++
++#include <linux/version.h>
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
++#include <linux/config.h>
++#endif
++#include <linux/kernel.h>
++#include <linux/module.h>
++#include <linux/slab.h>
++#include <linux/init.h>
++#include <linux/list.h>
++#include <linux/fs.h>
++#include <linux/proc_fs.h>
++#include <linux/smp_lock.h>
++#include <linux/pagemap.h>
++#include <linux/mtd/mtd.h>
++#include <linux/interrupt.h>
++#include <linux/string.h>
++#include <linux/ctype.h>
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++
++#include <linux/statfs.h> /* Added NCB 15-8-2003 */
++#include <asm/statfs.h>
++#define UnlockPage(p) unlock_page(p)
++#define Page_Uptodate(page) test_bit(PG_uptodate, &(page)->flags)
++
++/* FIXME: use sb->s_id instead ? */
++#define yaffs_devname(sb, buf) bdevname(sb->s_bdev, buf)
++
++#else
++
++#include <linux/locks.h>
++#define BDEVNAME_SIZE 0
++#define yaffs_devname(sb, buf) kdevname(sb->s_dev)
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,0))
++/* added NCB 26/5/2006 for 2.4.25-vrs2-tcl1 kernel */
++#define __user
++#endif
++
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++#define WRITE_SIZE_STR "writesize"
++#define WRITE_SIZE(mtd) (mtd)->writesize
++#else
++#define WRITE_SIZE_STR "oobblock"
++#define WRITE_SIZE(mtd) (mtd)->oobblock
++#endif
++
++#include <asm/uaccess.h>
++
++#include "yportenv.h"
++#include "yaffs_guts.h"
++
++#include <linux/mtd/mtd.h>
++#include "yaffs_mtdif.h"
++#include "yaffs_mtdif1.h"
++#include "yaffs_mtdif2.h"
++
++unsigned int yaffs_traceMask = YAFFS_TRACE_BAD_BLOCKS;
++unsigned int yaffs_wr_attempts = YAFFS_WR_ATTEMPTS;
++
++/* Module Parameters */
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++module_param(yaffs_traceMask,uint,0644);
++module_param(yaffs_wr_attempts,uint,0644);
++#else
++MODULE_PARM(yaffs_traceMask,"i");
++MODULE_PARM(yaffs_wr_attempts,"i");
++#endif
++
++/*#define T(x) printk x */
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
++#define yaffs_InodeToObjectLV(iptr) (iptr)->i_private
++#else
++#define yaffs_InodeToObjectLV(iptr) (iptr)->u.generic_ip
++#endif
++
++#define yaffs_InodeToObject(iptr) ((yaffs_Object *)(yaffs_InodeToObjectLV(iptr)))
++#define yaffs_DentryToObject(dptr) yaffs_InodeToObject((dptr)->d_inode)
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->s_fs_info)
++#else
++#define yaffs_SuperToDevice(sb) ((yaffs_Device *)sb->u.generic_sbp)
++#endif
++
++static void yaffs_put_super(struct super_block *sb);
++
++static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
++ loff_t * pos);
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++static int yaffs_file_flush(struct file *file, fl_owner_t id);
++#else
++static int yaffs_file_flush(struct file *file);
++#endif
++
++static int yaffs_sync_object(struct file *file, struct dentry *dentry,
++ int datasync);
++
++static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir);
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
++ struct nameidata *n);
++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
++ struct nameidata *n);
++#else
++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode);
++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry);
++#endif
++static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
++ struct dentry *dentry);
++static int yaffs_unlink(struct inode *dir, struct dentry *dentry);
++static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
++ const char *symname);
++static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode);
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
++ dev_t dev);
++#else
++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
++ int dev);
++#endif
++static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
++ struct inode *new_dir, struct dentry *new_dentry);
++static int yaffs_setattr(struct dentry *dentry, struct iattr *attr);
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++static int yaffs_sync_fs(struct super_block *sb, int wait);
++static void yaffs_write_super(struct super_block *sb);
++#else
++static int yaffs_sync_fs(struct super_block *sb);
++static int yaffs_write_super(struct super_block *sb);
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf);
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf);
++#else
++static int yaffs_statfs(struct super_block *sb, struct statfs *buf);
++#endif
++static void yaffs_read_inode(struct inode *inode);
++
++static void yaffs_put_inode(struct inode *inode);
++static void yaffs_delete_inode(struct inode *);
++static void yaffs_clear_inode(struct inode *);
++
++static int yaffs_readpage(struct file *file, struct page *page);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++static int yaffs_writepage(struct page *page, struct writeback_control *wbc);
++#else
++static int yaffs_writepage(struct page *page);
++#endif
++static int yaffs_prepare_write(struct file *f, struct page *pg,
++ unsigned offset, unsigned to);
++static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
++ unsigned to);
++
++static int yaffs_readlink(struct dentry *dentry, char __user * buffer,
++ int buflen);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
++static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
++#else
++static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd);
++#endif
++
++static struct address_space_operations yaffs_file_address_operations = {
++ .readpage = yaffs_readpage,
++ .writepage = yaffs_writepage,
++ .prepare_write = yaffs_prepare_write,
++ .commit_write = yaffs_commit_write,
++};
++
++static struct file_operations yaffs_file_operations = {
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,18))
++ .read = do_sync_read,
++ .write = do_sync_write,
++ .aio_read = generic_file_aio_read,
++ .aio_write = generic_file_aio_write,
++#else
++ .read = generic_file_read,
++ .write = generic_file_write,
++#endif
++ .mmap = generic_file_mmap,
++ .flush = yaffs_file_flush,
++ .fsync = yaffs_sync_object,
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++ .sendfile = generic_file_sendfile,
++#endif
++
++};
++
++static struct inode_operations yaffs_file_inode_operations = {
++ .setattr = yaffs_setattr,
++};
++
++static struct inode_operations yaffs_symlink_inode_operations = {
++ .readlink = yaffs_readlink,
++ .follow_link = yaffs_follow_link,
++ .setattr = yaffs_setattr,
++};
++
++static struct inode_operations yaffs_dir_inode_operations = {
++ .create = yaffs_create,
++ .lookup = yaffs_lookup,
++ .link = yaffs_link,
++ .unlink = yaffs_unlink,
++ .symlink = yaffs_symlink,
++ .mkdir = yaffs_mkdir,
++ .rmdir = yaffs_unlink,
++ .mknod = yaffs_mknod,
++ .rename = yaffs_rename,
++ .setattr = yaffs_setattr,
++};
++
++static struct file_operations yaffs_dir_operations = {
++ .read = generic_read_dir,
++ .readdir = yaffs_readdir,
++ .fsync = yaffs_sync_object,
++};
++
++static struct super_operations yaffs_super_ops = {
++ .statfs = yaffs_statfs,
++ .read_inode = yaffs_read_inode,
++ .put_inode = yaffs_put_inode,
++ .put_super = yaffs_put_super,
++ .delete_inode = yaffs_delete_inode,
++ .clear_inode = yaffs_clear_inode,
++ .sync_fs = yaffs_sync_fs,
++ .write_super = yaffs_write_super,
++};
++
++static void yaffs_GrossLock(yaffs_Device * dev)
++{
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs locking\n"));
++
++ down(&dev->grossLock);
++}
++
++static void yaffs_GrossUnlock(yaffs_Device * dev)
++{
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs unlocking\n"));
++ up(&dev->grossLock);
++
++}
++
++static int yaffs_readlink(struct dentry *dentry, char __user * buffer,
++ int buflen)
++{
++ unsigned char *alias;
++ int ret;
++
++ yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
++
++ yaffs_GrossLock(dev);
++
++ alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry));
++
++ yaffs_GrossUnlock(dev);
++
++ if (!alias)
++ return -ENOMEM;
++
++ ret = vfs_readlink(dentry, buffer, buflen, alias);
++ kfree(alias);
++ return ret;
++}
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
++static void *yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
++#else
++static int yaffs_follow_link(struct dentry *dentry, struct nameidata *nd)
++#endif
++{
++ unsigned char *alias;
++ int ret;
++ yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
++
++ yaffs_GrossLock(dev);
++
++ alias = yaffs_GetSymlinkAlias(yaffs_DentryToObject(dentry));
++
++ yaffs_GrossUnlock(dev);
++
++ if (!alias)
++ {
++ ret = -ENOMEM;
++ goto out;
++ }
++
++ ret = vfs_follow_link(nd, alias);
++ kfree(alias);
++out:
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
++ return ERR_PTR (ret);
++#else
++ return ret;
++#endif
++}
++
++struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
++ yaffs_Object * obj);
++
++/*
++ * Lookup is used to find objects in the fs
++ */
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++
++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry,
++ struct nameidata *n)
++#else
++static struct dentry *yaffs_lookup(struct inode *dir, struct dentry *dentry)
++#endif
++{
++ yaffs_Object *obj;
++ struct inode *inode = NULL; /* NCB 2.5/2.6 needs NULL here */
++
++ yaffs_Device *dev = yaffs_InodeToObject(dir)->myDev;
++
++ yaffs_GrossLock(dev);
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_lookup for %d:%s\n",
++ yaffs_InodeToObject(dir)->objectId, dentry->d_name.name));
++
++ obj =
++ yaffs_FindObjectByName(yaffs_InodeToObject(dir),
++ dentry->d_name.name);
++
++ obj = yaffs_GetEquivalentObject(obj); /* in case it was a hardlink */
++
++ /* Can't hold gross lock when calling yaffs_get_inode() */
++ yaffs_GrossUnlock(dev);
++
++ if (obj) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_lookup found %d\n", obj->objectId));
++
++ inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
++
++ if (inode) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_loookup dentry \n"));
++/* #if 0 asserted by NCB for 2.5/6 compatability - falls through to
++ * d_add even if NULL inode */
++#if 0
++ /*dget(dentry); // try to solve directory bug */
++ d_add(dentry, inode);
++
++ /* return dentry; */
++ return NULL;
++#endif
++ }
++
++ } else {
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_lookup not found\n"));
++
++ }
++
++/* added NCB for 2.5/6 compatability - forces add even if inode is
++ * NULL which creates dentry hash */
++ d_add(dentry, inode);
++
++ return NULL;
++ /* return (ERR_PTR(-EIO)); */
++
++}
++
++/* For now put inode is just for debugging
++ * Put inode is called when the inode **structure** is put.
++ */
++static void yaffs_put_inode(struct inode *inode)
++{
++ T(YAFFS_TRACE_OS,
++ ("yaffs_put_inode: ino %d, count %d\n", (int)inode->i_ino,
++ atomic_read(&inode->i_count)));
++
++}
++
++/* clear is called to tell the fs to release any per-inode data it holds */
++static void yaffs_clear_inode(struct inode *inode)
++{
++ yaffs_Object *obj;
++ yaffs_Device *dev;
++
++ obj = yaffs_InodeToObject(inode);
++
++ T(YAFFS_TRACE_OS,
++ ("yaffs_clear_inode: ino %d, count %d %s\n", (int)inode->i_ino,
++ atomic_read(&inode->i_count),
++ obj ? "object exists" : "null object"));
++
++ if (obj) {
++ dev = obj->myDev;
++ yaffs_GrossLock(dev);
++
++ /* Clear the association between the inode and
++ * the yaffs_Object.
++ */
++ obj->myInode = NULL;
++ yaffs_InodeToObjectLV(inode) = NULL;
++
++ /* If the object freeing was deferred, then the real
++ * free happens now.
++ * This should fix the inode inconsistency problem.
++ */
++
++ yaffs_HandleDeferedFree(obj);
++
++ yaffs_GrossUnlock(dev);
++ }
++
++}
++
++/* delete is called when the link count is zero and the inode
++ * is put (ie. nobody wants to know about it anymore, time to
++ * delete the file).
++ * NB Must call clear_inode()
++ */
++static void yaffs_delete_inode(struct inode *inode)
++{
++ yaffs_Object *obj = yaffs_InodeToObject(inode);
++ yaffs_Device *dev;
++
++ T(YAFFS_TRACE_OS,
++ ("yaffs_delete_inode: ino %d, count %d %s\n", (int)inode->i_ino,
++ atomic_read(&inode->i_count),
++ obj ? "object exists" : "null object"));
++
++ if (obj) {
++ dev = obj->myDev;
++ yaffs_GrossLock(dev);
++ yaffs_DeleteFile(obj);
++ yaffs_GrossUnlock(dev);
++ }
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,13))
++ truncate_inode_pages (&inode->i_data, 0);
++#endif
++ clear_inode(inode);
++}
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++static int yaffs_file_flush(struct file *file, fl_owner_t id)
++#else
++static int yaffs_file_flush(struct file *file)
++#endif
++{
++ yaffs_Object *obj = yaffs_DentryToObject(file->f_dentry);
++
++ yaffs_Device *dev = obj->myDev;
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_file_flush object %d (%s)\n", obj->objectId,
++ obj->dirty ? "dirty" : "clean"));
++
++ yaffs_GrossLock(dev);
++
++ yaffs_FlushFile(obj, 1);
++
++ yaffs_GrossUnlock(dev);
++
++ return 0;
++}
++
++static int yaffs_readpage_nolock(struct file *f, struct page *pg)
++{
++ /* Lifted from jffs2 */
++
++ yaffs_Object *obj;
++ unsigned char *pg_buf;
++ int ret;
++
++ yaffs_Device *dev;
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage at %08x, size %08x\n",
++ (unsigned)(pg->index << PAGE_CACHE_SHIFT),
++ (unsigned)PAGE_CACHE_SIZE));
++
++ obj = yaffs_DentryToObject(f->f_dentry);
++
++ dev = obj->myDev;
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++ BUG_ON(!PageLocked(pg));
++#else
++ if (!PageLocked(pg))
++ PAGE_BUG(pg);
++#endif
++
++ pg_buf = kmap(pg);
++ /* FIXME: Can kmap fail? */
++
++ yaffs_GrossLock(dev);
++
++ ret =
++ yaffs_ReadDataFromFile(obj, pg_buf, pg->index << PAGE_CACHE_SHIFT,
++ PAGE_CACHE_SIZE);
++
++ yaffs_GrossUnlock(dev);
++
++ if (ret >= 0)
++ ret = 0;
++
++ if (ret) {
++ ClearPageUptodate(pg);
++ SetPageError(pg);
++ } else {
++ SetPageUptodate(pg);
++ ClearPageError(pg);
++ }
++
++ flush_dcache_page(pg);
++ kunmap(pg);
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_readpage done\n"));
++ return ret;
++}
++
++static int yaffs_readpage_unlock(struct file *f, struct page *pg)
++{
++ int ret = yaffs_readpage_nolock(f, pg);
++ UnlockPage(pg);
++ return ret;
++}
++
++static int yaffs_readpage(struct file *f, struct page *pg)
++{
++ return yaffs_readpage_unlock(f, pg);
++}
++
++/* writepage inspired by/stolen from smbfs */
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++static int yaffs_writepage(struct page *page, struct writeback_control *wbc)
++#else
++static int yaffs_writepage(struct page *page)
++#endif
++{
++ struct address_space *mapping = page->mapping;
++ loff_t offset = (loff_t) page->index << PAGE_CACHE_SHIFT;
++ struct inode *inode;
++ unsigned long end_index;
++ char *buffer;
++ yaffs_Object *obj;
++ int nWritten = 0;
++ unsigned nBytes;
++
++ if (!mapping)
++ BUG();
++ inode = mapping->host;
++ if (!inode)
++ BUG();
++
++ if (offset > inode->i_size) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG
++ "yaffs_writepage at %08x, inode size = %08x!!!\n",
++ (unsigned)(page->index << PAGE_CACHE_SHIFT),
++ (unsigned)inode->i_size));
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG " -> don't care!!\n"));
++ unlock_page(page);
++ return 0;
++ }
++
++ end_index = inode->i_size >> PAGE_CACHE_SHIFT;
++
++ /* easy case */
++ if (page->index < end_index) {
++ nBytes = PAGE_CACHE_SIZE;
++ } else {
++ nBytes = inode->i_size & (PAGE_CACHE_SIZE - 1);
++ }
++
++ get_page(page);
++
++ buffer = kmap(page);
++
++ obj = yaffs_InodeToObject(inode);
++ yaffs_GrossLock(obj->myDev);
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_writepage at %08x, size %08x\n",
++ (unsigned)(page->index << PAGE_CACHE_SHIFT), nBytes));
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "writepag0: obj = %05x, ino = %05x\n",
++ (int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
++
++ nWritten =
++ yaffs_WriteDataToFile(obj, buffer, page->index << PAGE_CACHE_SHIFT,
++ nBytes, 0);
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "writepag1: obj = %05x, ino = %05x\n",
++ (int)obj->variant.fileVariant.fileSize, (int)inode->i_size));
++
++ yaffs_GrossUnlock(obj->myDev);
++
++ kunmap(page);
++ SetPageUptodate(page);
++ UnlockPage(page);
++ put_page(page);
++
++ return (nWritten == nBytes) ? 0 : -ENOSPC;
++}
++
++static int yaffs_prepare_write(struct file *f, struct page *pg,
++ unsigned offset, unsigned to)
++{
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_prepair_write\n"));
++ if (!Page_Uptodate(pg) && (offset || to < PAGE_CACHE_SIZE))
++ return yaffs_readpage_nolock(f, pg);
++
++ return 0;
++
++}
++
++static int yaffs_commit_write(struct file *f, struct page *pg, unsigned offset,
++ unsigned to)
++{
++
++ void *addr = page_address(pg) + offset;
++ loff_t pos = (((loff_t) pg->index) << PAGE_CACHE_SHIFT) + offset;
++ int nBytes = to - offset;
++ int nWritten;
++
++ unsigned spos = pos;
++ unsigned saddr = (unsigned)addr;
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_commit_write addr %x pos %x nBytes %d\n", saddr,
++ spos, nBytes));
++
++ nWritten = yaffs_file_write(f, addr, nBytes, &pos);
++
++ if (nWritten != nBytes) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG
++ "yaffs_commit_write not same size nWritten %d nBytes %d\n",
++ nWritten, nBytes));
++ SetPageError(pg);
++ ClearPageUptodate(pg);
++ } else {
++ SetPageUptodate(pg);
++ }
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_commit_write returning %d\n",
++ nWritten == nBytes ? 0 : nWritten));
++
++ return nWritten == nBytes ? 0 : nWritten;
++
++}
++
++static void yaffs_FillInodeFromObject(struct inode *inode, yaffs_Object * obj)
++{
++ if (inode && obj) {
++
++
++ /* Check mode against the variant type and attempt to repair if broken. */
++ __u32 mode = obj->yst_mode;
++ switch( obj->variantType ){
++ case YAFFS_OBJECT_TYPE_FILE :
++ if( ! S_ISREG(mode) ){
++ obj->yst_mode &= ~S_IFMT;
++ obj->yst_mode |= S_IFREG;
++ }
++
++ break;
++ case YAFFS_OBJECT_TYPE_SYMLINK :
++ if( ! S_ISLNK(mode) ){
++ obj->yst_mode &= ~S_IFMT;
++ obj->yst_mode |= S_IFLNK;
++ }
++
++ break;
++ case YAFFS_OBJECT_TYPE_DIRECTORY :
++ if( ! S_ISDIR(mode) ){
++ obj->yst_mode &= ~S_IFMT;
++ obj->yst_mode |= S_IFDIR;
++ }
++
++ break;
++ case YAFFS_OBJECT_TYPE_UNKNOWN :
++ case YAFFS_OBJECT_TYPE_HARDLINK :
++ case YAFFS_OBJECT_TYPE_SPECIAL :
++ default:
++ /* TODO? */
++ break;
++ }
++
++ inode->i_ino = obj->objectId;
++ inode->i_mode = obj->yst_mode;
++ inode->i_uid = obj->yst_uid;
++ inode->i_gid = obj->yst_gid;
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
++ inode->i_blksize = inode->i_sb->s_blocksize;
++#endif
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++
++ inode->i_rdev = old_decode_dev(obj->yst_rdev);
++ inode->i_atime.tv_sec = (time_t) (obj->yst_atime);
++ inode->i_atime.tv_nsec = 0;
++ inode->i_mtime.tv_sec = (time_t) obj->yst_mtime;
++ inode->i_mtime.tv_nsec = 0;
++ inode->i_ctime.tv_sec = (time_t) obj->yst_ctime;
++ inode->i_ctime.tv_nsec = 0;
++#else
++ inode->i_rdev = obj->yst_rdev;
++ inode->i_atime = obj->yst_atime;
++ inode->i_mtime = obj->yst_mtime;
++ inode->i_ctime = obj->yst_ctime;
++#endif
++ inode->i_size = yaffs_GetObjectFileLength(obj);
++ inode->i_blocks = (inode->i_size + 511) >> 9;
++
++ inode->i_nlink = yaffs_GetObjectLinkCount(obj);
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG
++ "yaffs_FillInode mode %x uid %d gid %d size %d count %d\n",
++ inode->i_mode, inode->i_uid, inode->i_gid,
++ (int)inode->i_size, atomic_read(&inode->i_count)));
++
++ switch (obj->yst_mode & S_IFMT) {
++ default: /* fifo, device or socket */
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++ init_special_inode(inode, obj->yst_mode,
++ old_decode_dev(obj->yst_rdev));
++#else
++ init_special_inode(inode, obj->yst_mode,
++ (dev_t) (obj->yst_rdev));
++#endif
++ break;
++ case S_IFREG: /* file */
++ inode->i_op = &yaffs_file_inode_operations;
++ inode->i_fop = &yaffs_file_operations;
++ inode->i_mapping->a_ops =
++ &yaffs_file_address_operations;
++ break;
++ case S_IFDIR: /* directory */
++ inode->i_op = &yaffs_dir_inode_operations;
++ inode->i_fop = &yaffs_dir_operations;
++ break;
++ case S_IFLNK: /* symlink */
++ inode->i_op = &yaffs_symlink_inode_operations;
++ break;
++ }
++
++ yaffs_InodeToObjectLV(inode) = obj;
++
++ obj->myInode = inode;
++
++ } else {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_FileInode invalid parameters\n"));
++ }
++
++}
++
++struct inode *yaffs_get_inode(struct super_block *sb, int mode, int dev,
++ yaffs_Object * obj)
++{
++ struct inode *inode;
++
++ if (!sb) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_get_inode for NULL super_block!!\n"));
++ return NULL;
++
++ }
++
++ if (!obj) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_get_inode for NULL object!!\n"));
++ return NULL;
++
++ }
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_get_inode for object %d\n", obj->objectId));
++
++ inode = iget(sb, obj->objectId);
++
++ /* NB Side effect: iget calls back to yaffs_read_inode(). */
++ /* iget also increments the inode's i_count */
++ /* NB You can't be holding grossLock or deadlock will happen! */
++
++ return inode;
++}
++
++static ssize_t yaffs_file_write(struct file *f, const char *buf, size_t n,
++ loff_t * pos)
++{
++ yaffs_Object *obj;
++ int nWritten, ipos;
++ struct inode *inode;
++ yaffs_Device *dev;
++
++ obj = yaffs_DentryToObject(f->f_dentry);
++
++ dev = obj->myDev;
++
++ yaffs_GrossLock(dev);
++
++ inode = f->f_dentry->d_inode;
++
++ if (!S_ISBLK(inode->i_mode) && f->f_flags & O_APPEND) {
++ ipos = inode->i_size;
++ } else {
++ ipos = *pos;
++ }
++
++ if (!obj) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_file_write: hey obj is null!\n"));
++ } else {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG
++ "yaffs_file_write about to write writing %d bytes"
++ "to object %d at %d\n",
++ n, obj->objectId, ipos));
++ }
++
++ nWritten = yaffs_WriteDataToFile(obj, buf, ipos, n, 0);
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_file_write writing %d bytes, %d written at %d\n",
++ n, nWritten, ipos));
++ if (nWritten > 0) {
++ ipos += nWritten;
++ *pos = ipos;
++ if (ipos > inode->i_size) {
++ inode->i_size = ipos;
++ inode->i_blocks = (ipos + 511) >> 9;
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG
++ "yaffs_file_write size updated to %d bytes, "
++ "%d blocks\n",
++ ipos, (int)(inode->i_blocks)));
++ }
++
++ }
++ yaffs_GrossUnlock(dev);
++ return nWritten == 0 ? -ENOSPC : nWritten;
++}
++
++static int yaffs_readdir(struct file *f, void *dirent, filldir_t filldir)
++{
++ yaffs_Object *obj;
++ yaffs_Device *dev;
++ struct inode *inode = f->f_dentry->d_inode;
++ unsigned long offset, curoffs;
++ struct list_head *i;
++ yaffs_Object *l;
++
++ char name[YAFFS_MAX_NAME_LENGTH + 1];
++
++ obj = yaffs_DentryToObject(f->f_dentry);
++ dev = obj->myDev;
++
++ yaffs_GrossLock(dev);
++
++ offset = f->f_pos;
++
++ T(YAFFS_TRACE_OS, ("yaffs_readdir: starting at %d\n", (int)offset));
++
++ if (offset == 0) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_readdir: entry . ino %d \n",
++ (int)inode->i_ino));
++ if (filldir(dirent, ".", 1, offset, inode->i_ino, DT_DIR)
++ < 0) {
++ goto out;
++ }
++ offset++;
++ f->f_pos++;
++ }
++ if (offset == 1) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_readdir: entry .. ino %d \n",
++ (int)f->f_dentry->d_parent->d_inode->i_ino));
++ if (filldir
++ (dirent, "..", 2, offset,
++ f->f_dentry->d_parent->d_inode->i_ino, DT_DIR) < 0) {
++ goto out;
++ }
++ offset++;
++ f->f_pos++;
++ }
++
++ curoffs = 1;
++
++ /* If the directory has changed since the open or last call to
++ readdir, rewind to after the 2 canned entries. */
++
++ if (f->f_version != inode->i_version) {
++ offset = 2;
++ f->f_pos = offset;
++ f->f_version = inode->i_version;
++ }
++
++ list_for_each(i, &obj->variant.directoryVariant.children) {
++ curoffs++;
++ if (curoffs >= offset) {
++ l = list_entry(i, yaffs_Object, siblings);
++
++ yaffs_GetObjectName(l, name,
++ YAFFS_MAX_NAME_LENGTH + 1);
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_readdir: %s inode %d\n", name,
++ yaffs_GetObjectInode(l)));
++
++ if (filldir(dirent,
++ name,
++ strlen(name),
++ offset,
++ yaffs_GetObjectInode(l),
++ yaffs_GetObjectType(l))
++ < 0) {
++ goto up_and_out;
++ }
++
++ offset++;
++ f->f_pos++;
++ }
++ }
++
++ up_and_out:
++ out:
++
++ yaffs_GrossUnlock(dev);
++
++ return 0;
++}
++
++/*
++ * File creation. Allocate an inode, and we're done..
++ */
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
++ dev_t rdev)
++#else
++static int yaffs_mknod(struct inode *dir, struct dentry *dentry, int mode,
++ int rdev)
++#endif
++{
++ struct inode *inode;
++
++ yaffs_Object *obj = NULL;
++ yaffs_Device *dev;
++
++ yaffs_Object *parent = yaffs_InodeToObject(dir);
++
++ int error = -ENOSPC;
++ uid_t uid = current->fsuid;
++ gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
++
++ if((dir->i_mode & S_ISGID) && S_ISDIR(mode))
++ mode |= S_ISGID;
++
++ if (parent) {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_mknod: parent object %d type %d\n",
++ parent->objectId, parent->variantType));
++ } else {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_mknod: could not get parent object\n"));
++ return -EPERM;
++ }
++
++ T(YAFFS_TRACE_OS, ("yaffs_mknod: making oject for %s, "
++ "mode %x dev %x\n",
++ dentry->d_name.name, mode, rdev));
++
++ dev = parent->myDev;
++
++ yaffs_GrossLock(dev);
++
++ switch (mode & S_IFMT) {
++ default:
++ /* Special (socket, fifo, device...) */
++ T(YAFFS_TRACE_OS, (KERN_DEBUG
++ "yaffs_mknod: making special\n"));
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++ obj =
++ yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
++ gid, old_encode_dev(rdev));
++#else
++ obj =
++ yaffs_MknodSpecial(parent, dentry->d_name.name, mode, uid,
++ gid, rdev);
++#endif
++ break;
++ case S_IFREG: /* file */
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n"));
++ obj =
++ yaffs_MknodFile(parent, dentry->d_name.name, mode, uid,
++ gid);
++ break;
++ case S_IFDIR: /* directory */
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_mknod: making directory\n"));
++ obj =
++ yaffs_MknodDirectory(parent, dentry->d_name.name, mode,
++ uid, gid);
++ break;
++ case S_IFLNK: /* symlink */
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mknod: making file\n"));
++ obj = NULL; /* Do we ever get here? */
++ break;
++ }
++
++ /* Can not call yaffs_get_inode() with gross lock held */
++ yaffs_GrossUnlock(dev);
++
++ if (obj) {
++ inode = yaffs_get_inode(dir->i_sb, mode, rdev, obj);
++ d_instantiate(dentry, inode);
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_mknod created object %d count = %d\n",
++ obj->objectId, atomic_read(&inode->i_count)));
++ error = 0;
++ } else {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_mknod failed making object\n"));
++ error = -ENOMEM;
++ }
++
++ return error;
++}
++
++static int yaffs_mkdir(struct inode *dir, struct dentry *dentry, int mode)
++{
++ int retVal;
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_mkdir\n"));
++ retVal = yaffs_mknod(dir, dentry, mode | S_IFDIR, 0);
++#if 0
++ /* attempt to fix dir bug - didn't work */
++ if (!retVal) {
++ dget(dentry);
++ }
++#endif
++ return retVal;
++}
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode,
++ struct nameidata *n)
++#else
++static int yaffs_create(struct inode *dir, struct dentry *dentry, int mode)
++#endif
++{
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_create\n"));
++ return yaffs_mknod(dir, dentry, mode | S_IFREG, 0);
++}
++
++static int yaffs_unlink(struct inode *dir, struct dentry *dentry)
++{
++ int retVal;
++
++ yaffs_Device *dev;
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_unlink %d:%s\n", (int)(dir->i_ino),
++ dentry->d_name.name));
++
++ dev = yaffs_InodeToObject(dir)->myDev;
++
++ yaffs_GrossLock(dev);
++
++ retVal = yaffs_Unlink(yaffs_InodeToObject(dir), dentry->d_name.name);
++
++ if (retVal == YAFFS_OK) {
++ dentry->d_inode->i_nlink--;
++ dir->i_version++;
++ yaffs_GrossUnlock(dev);
++ mark_inode_dirty(dentry->d_inode);
++ return 0;
++ }
++ yaffs_GrossUnlock(dev);
++ return -ENOTEMPTY;
++}
++
++/*
++ * Create a link...
++ */
++static int yaffs_link(struct dentry *old_dentry, struct inode *dir,
++ struct dentry *dentry)
++{
++ struct inode *inode = old_dentry->d_inode;
++ yaffs_Object *obj = NULL;
++ yaffs_Object *link = NULL;
++ yaffs_Device *dev;
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_link\n"));
++
++ obj = yaffs_InodeToObject(inode);
++ dev = obj->myDev;
++
++ yaffs_GrossLock(dev);
++
++ if (!S_ISDIR(inode->i_mode)) /* Don't link directories */
++ {
++ link =
++ yaffs_Link(yaffs_InodeToObject(dir), dentry->d_name.name,
++ obj);
++ }
++
++ if (link) {
++ old_dentry->d_inode->i_nlink = yaffs_GetObjectLinkCount(obj);
++ d_instantiate(dentry, old_dentry->d_inode);
++ atomic_inc(&old_dentry->d_inode->i_count);
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_link link count %d i_count %d\n",
++ old_dentry->d_inode->i_nlink,
++ atomic_read(&old_dentry->d_inode->i_count)));
++
++ }
++
++ yaffs_GrossUnlock(dev);
++
++ if (link) {
++
++ return 0;
++ }
++
++ return -EPERM;
++}
++
++static int yaffs_symlink(struct inode *dir, struct dentry *dentry,
++ const char *symname)
++{
++ yaffs_Object *obj;
++ yaffs_Device *dev;
++ uid_t uid = current->fsuid;
++ gid_t gid = (dir->i_mode & S_ISGID) ? dir->i_gid : current->fsgid;
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_symlink\n"));
++
++ dev = yaffs_InodeToObject(dir)->myDev;
++ yaffs_GrossLock(dev);
++ obj = yaffs_MknodSymLink(yaffs_InodeToObject(dir), dentry->d_name.name,
++ S_IFLNK | S_IRWXUGO, uid, gid, symname);
++ yaffs_GrossUnlock(dev);
++
++ if (obj) {
++
++ struct inode *inode;
++
++ inode = yaffs_get_inode(dir->i_sb, obj->yst_mode, 0, obj);
++ d_instantiate(dentry, inode);
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink created OK\n"));
++ return 0;
++ } else {
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "symlink not created\n"));
++
++ }
++
++ return -ENOMEM;
++}
++
++static int yaffs_sync_object(struct file *file, struct dentry *dentry,
++ int datasync)
++{
++
++ yaffs_Object *obj;
++ yaffs_Device *dev;
++
++ obj = yaffs_DentryToObject(dentry);
++
++ dev = obj->myDev;
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_object\n"));
++ yaffs_GrossLock(dev);
++ yaffs_FlushFile(obj, 1);
++ yaffs_GrossUnlock(dev);
++ return 0;
++}
++
++/*
++ * The VFS layer already does all the dentry stuff for rename.
++ *
++ * NB: POSIX says you can rename an object over an old object of the same name
++ */
++static int yaffs_rename(struct inode *old_dir, struct dentry *old_dentry,
++ struct inode *new_dir, struct dentry *new_dentry)
++{
++ yaffs_Device *dev;
++ int retVal = YAFFS_FAIL;
++ yaffs_Object *target;
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_rename\n"));
++ dev = yaffs_InodeToObject(old_dir)->myDev;
++
++ yaffs_GrossLock(dev);
++
++ /* Check if the target is an existing directory that is not empty. */
++ target =
++ yaffs_FindObjectByName(yaffs_InodeToObject(new_dir),
++ new_dentry->d_name.name);
++
++
++
++ if (target &&
++ target->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
++ !list_empty(&target->variant.directoryVariant.children)) {
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "target is non-empty dir\n"));
++
++ retVal = YAFFS_FAIL;
++ } else {
++
++ /* Now does unlinking internally using shadowing mechanism */
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "calling yaffs_RenameObject\n"));
++
++ retVal =
++ yaffs_RenameObject(yaffs_InodeToObject(old_dir),
++ old_dentry->d_name.name,
++ yaffs_InodeToObject(new_dir),
++ new_dentry->d_name.name);
++
++ }
++ yaffs_GrossUnlock(dev);
++
++ if (retVal == YAFFS_OK) {
++ if(target) {
++ new_dentry->d_inode->i_nlink--;
++ mark_inode_dirty(new_dentry->d_inode);
++ }
++
++ return 0;
++ } else {
++ return -ENOTEMPTY;
++ }
++
++}
++
++static int yaffs_setattr(struct dentry *dentry, struct iattr *attr)
++{
++ struct inode *inode = dentry->d_inode;
++ int error;
++ yaffs_Device *dev;
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_setattr of object %d\n",
++ yaffs_InodeToObject(inode)->objectId));
++
++ if ((error = inode_change_ok(inode, attr)) == 0) {
++
++ dev = yaffs_InodeToObject(inode)->myDev;
++ yaffs_GrossLock(dev);
++ if (yaffs_SetAttributes(yaffs_InodeToObject(inode), attr) ==
++ YAFFS_OK) {
++ error = 0;
++ } else {
++ error = -EPERM;
++ }
++ yaffs_GrossUnlock(dev);
++ if (!error)
++ error = inode_setattr(inode, attr);
++ }
++ return error;
++}
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++static int yaffs_statfs(struct dentry *dentry, struct kstatfs *buf)
++{
++ yaffs_Device *dev = yaffs_DentryToObject(dentry)->myDev;
++ struct super_block *sb = dentry->d_sb;
++#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++static int yaffs_statfs(struct super_block *sb, struct kstatfs *buf)
++{
++ yaffs_Device *dev = yaffs_SuperToDevice(sb);
++#else
++static int yaffs_statfs(struct super_block *sb, struct statfs *buf)
++{
++ yaffs_Device *dev = yaffs_SuperToDevice(sb);
++#endif
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_statfs\n"));
++
++ yaffs_GrossLock(dev);
++
++ buf->f_type = YAFFS_MAGIC;
++ buf->f_bsize = sb->s_blocksize;
++ buf->f_namelen = 255;
++ if (sb->s_blocksize > dev->nDataBytesPerChunk) {
++
++ buf->f_blocks =
++ (dev->endBlock - dev->startBlock +
++ 1) * dev->nChunksPerBlock / (sb->s_blocksize /
++ dev->nDataBytesPerChunk);
++ buf->f_bfree =
++ yaffs_GetNumberOfFreeChunks(dev) / (sb->s_blocksize /
++ dev->nDataBytesPerChunk);
++ } else {
++
++ buf->f_blocks =
++ (dev->endBlock - dev->startBlock +
++ 1) * dev->nChunksPerBlock * (dev->nDataBytesPerChunk /
++ sb->s_blocksize);
++ buf->f_bfree =
++ yaffs_GetNumberOfFreeChunks(dev) * (dev->nDataBytesPerChunk /
++ sb->s_blocksize);
++ }
++ buf->f_files = 0;
++ buf->f_ffree = 0;
++ buf->f_bavail = buf->f_bfree;
++
++ yaffs_GrossUnlock(dev);
++ return 0;
++}
++
++
++/**
++static int yaffs_do_sync_fs(struct super_block *sb)
++{
++
++ yaffs_Device *dev = yaffs_SuperToDevice(sb);
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_do_sync_fs\n"));
++
++ if(sb->s_dirt) {
++ yaffs_GrossLock(dev);
++
++ if(dev)
++ yaffs_CheckpointSave(dev);
++
++ yaffs_GrossUnlock(dev);
++
++ sb->s_dirt = 0;
++ }
++ return 0;
++}
++**/
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++static void yaffs_write_super(struct super_block *sb)
++#else
++static int yaffs_write_super(struct super_block *sb)
++#endif
++{
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_write_super\n"));
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
++ return 0; /* yaffs_do_sync_fs(sb);*/
++#endif
++}
++
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++static int yaffs_sync_fs(struct super_block *sb, int wait)
++#else
++static int yaffs_sync_fs(struct super_block *sb)
++#endif
++{
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_sync_fs\n"));
++
++ return 0; /* yaffs_do_sync_fs(sb);*/
++
++}
++
++
++static void yaffs_read_inode(struct inode *inode)
++{
++ /* NB This is called as a side effect of other functions, but
++ * we had to release the lock to prevent deadlocks, so
++ * need to lock again.
++ */
++
++ yaffs_Object *obj;
++ yaffs_Device *dev = yaffs_SuperToDevice(inode->i_sb);
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_read_inode for %d\n", (int)inode->i_ino));
++
++ yaffs_GrossLock(dev);
++
++ obj = yaffs_FindObjectByNumber(dev, inode->i_ino);
++
++ yaffs_FillInodeFromObject(inode, obj);
++
++ yaffs_GrossUnlock(dev);
++}
++
++static LIST_HEAD(yaffs_dev_list);
++
++static int yaffs_remount_fs(struct super_block *sb, int *flags, char *data)
++{
++ yaffs_Device *dev = yaffs_SuperToDevice(sb);
++
++ if( *flags & MS_RDONLY ) {
++ struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice;
++
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_remount_fs: %s: RO\n", dev->name ));
++
++ yaffs_GrossLock(dev);
++
++ yaffs_FlushEntireDeviceCache(dev);
++
++ yaffs_CheckpointSave(dev);
++
++ if (mtd->sync)
++ mtd->sync(mtd);
++
++ yaffs_GrossUnlock(dev);
++ }
++ else {
++ T(YAFFS_TRACE_OS,
++ (KERN_DEBUG "yaffs_remount_fs: %s: RW\n", dev->name ));
++ }
++
++ return 0;
++}
++
++static void yaffs_put_super(struct super_block *sb)
++{
++ yaffs_Device *dev = yaffs_SuperToDevice(sb);
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_put_super\n"));
++
++ yaffs_GrossLock(dev);
++
++ yaffs_FlushEntireDeviceCache(dev);
++
++ yaffs_CheckpointSave(dev);
++
++ if (dev->putSuperFunc) {
++ dev->putSuperFunc(sb);
++ }
++
++ yaffs_Deinitialise(dev);
++
++ yaffs_GrossUnlock(dev);
++
++ /* we assume this is protected by lock_kernel() in mount/umount */
++ list_del(&dev->devList);
++
++ if(dev->spareBuffer){
++ YFREE(dev->spareBuffer);
++ dev->spareBuffer = NULL;
++ }
++
++ kfree(dev);
++}
++
++
++static void yaffs_MTDPutSuper(struct super_block *sb)
++{
++
++ struct mtd_info *mtd = yaffs_SuperToDevice(sb)->genericDevice;
++
++ if (mtd->sync) {
++ mtd->sync(mtd);
++ }
++
++ put_mtd_device(mtd);
++}
++
++
++static void yaffs_MarkSuperBlockDirty(void *vsb)
++{
++ struct super_block *sb = (struct super_block *)vsb;
++
++ T(YAFFS_TRACE_OS, (KERN_DEBUG "yaffs_MarkSuperBlockDirty() sb = %p\n",sb));
++// if(sb)
++// sb->s_dirt = 1;
++}
++
++typedef struct {
++ int inband_tags;
++ int skip_checkpoint_read;
++ int skip_checkpoint_write;
++ int no_cache;
++} yaffs_options;
++
++#define MAX_OPT_LEN 20
++static int yaffs_parse_options(yaffs_options *options, const char *options_str)
++{
++ char cur_opt[MAX_OPT_LEN+1];
++ int p;
++ int error = 0;
++
++ /* Parse through the options which is a comma seperated list */
++
++ while(options_str && *options_str && !error){
++ memset(cur_opt,0,MAX_OPT_LEN+1);
++ p = 0;
++
++ while(*options_str && *options_str != ','){
++ if(p < MAX_OPT_LEN){
++ cur_opt[p] = *options_str;
++ p++;
++ }
++ options_str++;
++ }
++
++ if(!strcmp(cur_opt,"inband-tags"))
++ options->inband_tags = 1;
++ else if(!strcmp(cur_opt,"no-cache"))
++ options->no_cache = 1;
++ else if(!strcmp(cur_opt,"no-checkpoint-read"))
++ options->skip_checkpoint_read = 1;
++ else if(!strcmp(cur_opt,"no-checkpoint-write"))
++ options->skip_checkpoint_write = 1;
++ else if(!strcmp(cur_opt,"no-checkpoint")){
++ options->skip_checkpoint_read = 1;
++ options->skip_checkpoint_write = 1;
++ } else {
++ printk(KERN_INFO "yaffs: Bad mount option \"%s\"\n",cur_opt);
++ error = 1;
++ }
++
++ }
++
++ return error;
++}
++
++static struct super_block *yaffs_internal_read_super(int yaffsVersion,
++ struct super_block *sb,
++ void *data, int silent)
++{
++ int nBlocks;
++ struct inode *inode = NULL;
++ struct dentry *root;
++ yaffs_Device *dev = 0;
++ char devname_buf[BDEVNAME_SIZE + 1];
++ struct mtd_info *mtd;
++ int err;
++ char *data_str = (char *)data;
++
++ yaffs_options options;
++
++ sb->s_magic = YAFFS_MAGIC;
++ sb->s_op = &yaffs_super_ops;
++
++ if (!sb)
++ printk(KERN_INFO "yaffs: sb is NULL\n");
++ else if (!sb->s_dev)
++ printk(KERN_INFO "yaffs: sb->s_dev is NULL\n");
++ else if (!yaffs_devname(sb, devname_buf))
++ printk(KERN_INFO "yaffs: devname is NULL\n");
++ else
++ printk(KERN_INFO "yaffs: dev is %d name is \"%s\"\n",
++ sb->s_dev,
++ yaffs_devname(sb, devname_buf));
++
++ if(!data_str)
++ data_str = "";
++
++ printk(KERN_INFO "yaffs: passed flags \"%s\"\n",data_str);
++
++ memset(&options,0,sizeof(options));
++
++ if(yaffs_parse_options(&options,data_str)){
++ /* Option parsing failed */
++ return NULL;
++ }
++
++
++ sb->s_blocksize = PAGE_CACHE_SIZE;
++ sb->s_blocksize_bits = PAGE_CACHE_SHIFT;
++ T(YAFFS_TRACE_OS, ("yaffs_read_super: Using yaffs%d\n", yaffsVersion));
++ T(YAFFS_TRACE_OS,
++ ("yaffs_read_super: block size %d\n", (int)(sb->s_blocksize)));
++
++#ifdef CONFIG_YAFFS_DISABLE_WRITE_VERIFY
++ T(YAFFS_TRACE_OS,
++ ("yaffs: Write verification disabled. All guarantees "
++ "null and void\n"));
++#endif
++
++ T(YAFFS_TRACE_ALWAYS, ("yaffs: Attempting MTD mount on %u.%u, "
++ "\"%s\"\n",
++ MAJOR(sb->s_dev), MINOR(sb->s_dev),
++ yaffs_devname(sb, devname_buf)));
++
++ /* Check it's an mtd device..... */
++ if (MAJOR(sb->s_dev) != MTD_BLOCK_MAJOR) {
++ return NULL; /* This isn't an mtd device */
++ }
++ /* Get the device */
++ mtd = get_mtd_device(NULL, MINOR(sb->s_dev));
++ if (!mtd) {
++ T(YAFFS_TRACE_ALWAYS,
++ ("yaffs: MTD device #%u doesn't appear to exist\n",
++ MINOR(sb->s_dev)));
++ return NULL;
++ }
++ /* Check it's NAND */
++ if (mtd->type != MTD_NANDFLASH) {
++ T(YAFFS_TRACE_ALWAYS,
++ ("yaffs: MTD device is not NAND it's type %d\n", mtd->type));
++ return NULL;
++ }
++
++ T(YAFFS_TRACE_OS, (" erase %p\n", mtd->erase));
++ T(YAFFS_TRACE_OS, (" read %p\n", mtd->read));
++ T(YAFFS_TRACE_OS, (" write %p\n", mtd->write));
++ T(YAFFS_TRACE_OS, (" readoob %p\n", mtd->read_oob));
++ T(YAFFS_TRACE_OS, (" writeoob %p\n", mtd->write_oob));
++ T(YAFFS_TRACE_OS, (" block_isbad %p\n", mtd->block_isbad));
++ T(YAFFS_TRACE_OS, (" block_markbad %p\n", mtd->block_markbad));
++ T(YAFFS_TRACE_OS, (" %s %d\n", WRITE_SIZE_STR, WRITE_SIZE(mtd)));
++ T(YAFFS_TRACE_OS, (" oobsize %d\n", mtd->oobsize));
++ T(YAFFS_TRACE_OS, (" erasesize %d\n", mtd->erasesize));
++ T(YAFFS_TRACE_OS, (" size %d\n", mtd->size));
++
++#ifdef CONFIG_YAFFS_AUTO_YAFFS2
++
++ if (yaffsVersion == 1 &&
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ mtd->writesize >= 2048) {
++#else
++ mtd->oobblock >= 2048) {
++#endif
++ T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs2\n"));
++ yaffsVersion = 2;
++ }
++
++ /* Added NCB 26/5/2006 for completeness */
++ if (yaffsVersion == 2 &&
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ mtd->writesize == 512) {
++#else
++ mtd->oobblock == 512) {
++#endif
++ T(YAFFS_TRACE_ALWAYS,("yaffs: auto selecting yaffs1\n"));
++ yaffsVersion = 1;
++ }
++
++#endif
++
++ if (yaffsVersion == 2) {
++ /* Check for version 2 style functions */
++ if (!mtd->erase ||
++ !mtd->block_isbad ||
++ !mtd->block_markbad ||
++ !mtd->read ||
++ !mtd->write ||
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ !mtd->read_oob || !mtd->write_oob) {
++#else
++ !mtd->write_ecc ||
++ !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
++#endif
++ T(YAFFS_TRACE_ALWAYS,
++ ("yaffs: MTD device does not support required "
++ "functions\n"));;
++ return NULL;
++ }
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ if (mtd->writesize < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
++#else
++ if (mtd->oobblock < YAFFS_MIN_YAFFS2_CHUNK_SIZE ||
++#endif
++ mtd->oobsize < YAFFS_MIN_YAFFS2_SPARE_SIZE) {
++ T(YAFFS_TRACE_ALWAYS,
++ ("yaffs: MTD device does not have the "
++ "right page sizes\n"));
++ return NULL;
++ }
++ } else {
++ /* Check for V1 style functions */
++ if (!mtd->erase ||
++ !mtd->read ||
++ !mtd->write ||
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ !mtd->read_oob || !mtd->write_oob) {
++#else
++ !mtd->write_ecc ||
++ !mtd->read_ecc || !mtd->read_oob || !mtd->write_oob) {
++#endif
++ T(YAFFS_TRACE_ALWAYS,
++ ("yaffs: MTD device does not support required "
++ "functions\n"));;
++ return NULL;
++ }
++
++ if (WRITE_SIZE(mtd) < YAFFS_BYTES_PER_CHUNK ||
++ mtd->oobsize != YAFFS_BYTES_PER_SPARE) {
++ T(YAFFS_TRACE_ALWAYS,
++ ("yaffs: MTD device does not support have the "
++ "right page sizes\n"));
++ return NULL;
++ }
++ }
++
++ /* OK, so if we got here, we have an MTD that's NAND and looks
++ * like it has the right capabilities
++ * Set the yaffs_Device up for mtd
++ */
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++ sb->s_fs_info = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL);
++#else
++ sb->u.generic_sbp = dev = kmalloc(sizeof(yaffs_Device), GFP_KERNEL);
++#endif
++ if (!dev) {
++ /* Deep shit could not allocate device structure */
++ T(YAFFS_TRACE_ALWAYS,
++ ("yaffs_read_super: Failed trying to allocate "
++ "yaffs_Device. \n"));
++ return NULL;
++ }
++
++ memset(dev, 0, sizeof(yaffs_Device));
++ dev->genericDevice = mtd;
++ dev->name = mtd->name;
++
++ /* Set up the memory size parameters.... */
++
++ nBlocks = mtd->size / (YAFFS_CHUNKS_PER_BLOCK * YAFFS_BYTES_PER_CHUNK);
++ dev->startBlock = 0;
++ dev->endBlock = nBlocks - 1;
++ dev->nChunksPerBlock = YAFFS_CHUNKS_PER_BLOCK;
++ dev->nDataBytesPerChunk = YAFFS_BYTES_PER_CHUNK;
++ dev->nReservedBlocks = 5;
++ dev->nShortOpCaches = (options.no_cache) ? 0 : 10;
++
++ /* ... and the functions. */
++ if (yaffsVersion == 2) {
++ dev->writeChunkWithTagsToNAND =
++ nandmtd2_WriteChunkWithTagsToNAND;
++ dev->readChunkWithTagsFromNAND =
++ nandmtd2_ReadChunkWithTagsFromNAND;
++ dev->markNANDBlockBad = nandmtd2_MarkNANDBlockBad;
++ dev->queryNANDBlock = nandmtd2_QueryNANDBlock;
++ dev->spareBuffer = YMALLOC(mtd->oobsize);
++ dev->isYaffs2 = 1;
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ dev->nDataBytesPerChunk = mtd->writesize;
++ dev->nChunksPerBlock = mtd->erasesize / mtd->writesize;
++#else
++ dev->nDataBytesPerChunk = mtd->oobblock;
++ dev->nChunksPerBlock = mtd->erasesize / mtd->oobblock;
++#endif
++ nBlocks = mtd->size / mtd->erasesize;
++
++ dev->nCheckpointReservedBlocks = CONFIG_YAFFS_CHECKPOINT_RESERVED_BLOCKS;
++ dev->startBlock = 0;
++ dev->endBlock = nBlocks - 1;
++ } else {
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ /* use the MTD interface in yaffs_mtdif1.c */
++ dev->writeChunkWithTagsToNAND =
++ nandmtd1_WriteChunkWithTagsToNAND;
++ dev->readChunkWithTagsFromNAND =
++ nandmtd1_ReadChunkWithTagsFromNAND;
++ dev->markNANDBlockBad = nandmtd1_MarkNANDBlockBad;
++ dev->queryNANDBlock = nandmtd1_QueryNANDBlock;
++#else
++ dev->writeChunkToNAND = nandmtd_WriteChunkToNAND;
++ dev->readChunkFromNAND = nandmtd_ReadChunkFromNAND;
++#endif
++ dev->isYaffs2 = 0;
++ }
++ /* ... and common functions */
++ dev->eraseBlockInNAND = nandmtd_EraseBlockInNAND;
++ dev->initialiseNAND = nandmtd_InitialiseNAND;
++
++ dev->putSuperFunc = yaffs_MTDPutSuper;
++
++ dev->superBlock = (void *)sb;
++ dev->markSuperBlockDirty = yaffs_MarkSuperBlockDirty;
++
++
++#ifndef CONFIG_YAFFS_DOES_ECC
++ dev->useNANDECC = 1;
++#endif
++
++#ifdef CONFIG_YAFFS_DISABLE_WIDE_TNODES
++ dev->wideTnodesDisabled = 1;
++#endif
++
++ dev->skipCheckpointRead = options.skip_checkpoint_read;
++ dev->skipCheckpointWrite = options.skip_checkpoint_write;
++
++ /* we assume this is protected by lock_kernel() in mount/umount */
++ list_add_tail(&dev->devList, &yaffs_dev_list);
++
++ init_MUTEX(&dev->grossLock);
++
++ yaffs_GrossLock(dev);
++
++ err = yaffs_GutsInitialise(dev);
++
++ T(YAFFS_TRACE_OS,
++ ("yaffs_read_super: guts initialised %s\n",
++ (err == YAFFS_OK) ? "OK" : "FAILED"));
++
++ /* Release lock before yaffs_get_inode() */
++ yaffs_GrossUnlock(dev);
++
++ /* Create root inode */
++ if (err == YAFFS_OK)
++ inode = yaffs_get_inode(sb, S_IFDIR | 0755, 0,
++ yaffs_Root(dev));
++
++ if (!inode)
++ return NULL;
++
++ inode->i_op = &yaffs_dir_inode_operations;
++ inode->i_fop = &yaffs_dir_operations;
++
++ T(YAFFS_TRACE_OS, ("yaffs_read_super: got root inode\n"));
++
++ root = d_alloc_root(inode);
++
++ T(YAFFS_TRACE_OS, ("yaffs_read_super: d_alloc_root done\n"));
++
++ if (!root) {
++ iput(inode);
++ return NULL;
++ }
++ sb->s_root = root;
++
++ T(YAFFS_TRACE_OS, ("yaffs_read_super: done\n"));
++ return sb;
++}
++
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++static int yaffs_internal_read_super_mtd(struct super_block *sb, void *data,
++ int silent)
++{
++ return yaffs_internal_read_super(1, sb, data, silent) ? 0 : -EINVAL;
++}
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++static int yaffs_read_super(struct file_system_type *fs,
++ int flags, const char *dev_name,
++ void *data, struct vfsmount *mnt)
++{
++
++ return get_sb_bdev(fs, flags, dev_name, data,
++ yaffs_internal_read_super_mtd, mnt);
++}
++#else
++static struct super_block *yaffs_read_super(struct file_system_type *fs,
++ int flags, const char *dev_name,
++ void *data)
++{
++
++ return get_sb_bdev(fs, flags, dev_name, data,
++ yaffs_internal_read_super_mtd);
++}
++#endif
++
++static struct file_system_type yaffs_fs_type = {
++ .owner = THIS_MODULE,
++ .name = "yaffs",
++ .get_sb = yaffs_read_super,
++ .kill_sb = kill_block_super,
++ .fs_flags = FS_REQUIRES_DEV,
++};
++#else
++static struct super_block *yaffs_read_super(struct super_block *sb, void *data,
++ int silent)
++{
++ return yaffs_internal_read_super(1, sb, data, silent);
++}
++
++static DECLARE_FSTYPE(yaffs_fs_type, "yaffs", yaffs_read_super,
++ FS_REQUIRES_DEV);
++#endif
++
++
++#ifdef CONFIG_YAFFS_YAFFS2
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++static int yaffs2_internal_read_super_mtd(struct super_block *sb, void *data,
++ int silent)
++{
++ return yaffs_internal_read_super(2, sb, data, silent) ? 0 : -EINVAL;
++}
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++static int yaffs2_read_super(struct file_system_type *fs,
++ int flags, const char *dev_name, void *data,
++ struct vfsmount *mnt)
++{
++ return get_sb_bdev(fs, flags, dev_name, data,
++ yaffs2_internal_read_super_mtd, mnt);
++}
++#else
++static struct super_block *yaffs2_read_super(struct file_system_type *fs,
++ int flags, const char *dev_name,
++ void *data)
++{
++
++ return get_sb_bdev(fs, flags, dev_name, data,
++ yaffs2_internal_read_super_mtd);
++}
++#endif
++
++static struct file_system_type yaffs2_fs_type = {
++ .owner = THIS_MODULE,
++ .name = "yaffs2",
++ .get_sb = yaffs2_read_super,
++ .kill_sb = kill_block_super,
++ .fs_flags = FS_REQUIRES_DEV,
++};
++#else
++static struct super_block *yaffs2_read_super(struct super_block *sb,
++ void *data, int silent)
++{
++ return yaffs_internal_read_super(2, sb, data, silent);
++}
++
++static DECLARE_FSTYPE(yaffs2_fs_type, "yaffs2", yaffs2_read_super,
++ FS_REQUIRES_DEV);
++#endif
++
++#endif /* CONFIG_YAFFS_YAFFS2 */
++
++static struct proc_dir_entry *my_proc_entry;
++
++static char *yaffs_dump_dev(char *buf, yaffs_Device * dev)
++{
++ buf += sprintf(buf, "startBlock......... %d\n", dev->startBlock);
++ buf += sprintf(buf, "endBlock........... %d\n", dev->endBlock);
++ buf += sprintf(buf, "nDataBytesPerChunk. %d\n", dev->nDataBytesPerChunk);
++ buf += sprintf(buf, "chunkGroupBits..... %d\n", dev->chunkGroupBits);
++ buf += sprintf(buf, "chunkGroupSize..... %d\n", dev->chunkGroupSize);
++ buf += sprintf(buf, "nErasedBlocks...... %d\n", dev->nErasedBlocks);
++ buf += sprintf(buf, "nReservedBlocks.... %d\n", dev->nReservedBlocks);
++ buf += sprintf(buf, "nCheckptResBlocks.. %d\n", dev->nCheckpointReservedBlocks);
++ buf += sprintf(buf, "blocksInCheckpoint. %d\n", dev->blocksInCheckpoint);
++ buf += sprintf(buf, "nTnodesCreated..... %d\n", dev->nTnodesCreated);
++ buf += sprintf(buf, "nFreeTnodes........ %d\n", dev->nFreeTnodes);
++ buf += sprintf(buf, "nObjectsCreated.... %d\n", dev->nObjectsCreated);
++ buf += sprintf(buf, "nFreeObjects....... %d\n", dev->nFreeObjects);
++ buf += sprintf(buf, "nFreeChunks........ %d\n", dev->nFreeChunks);
++ buf += sprintf(buf, "nPageWrites........ %d\n", dev->nPageWrites);
++ buf += sprintf(buf, "nPageReads......... %d\n", dev->nPageReads);
++ buf += sprintf(buf, "nBlockErasures..... %d\n", dev->nBlockErasures);
++ buf += sprintf(buf, "nGCCopies.......... %d\n", dev->nGCCopies);
++ buf +=
++ sprintf(buf, "garbageCollections. %d\n", dev->garbageCollections);
++ buf +=
++ sprintf(buf, "passiveGCs......... %d\n",
++ dev->passiveGarbageCollections);
++ buf += sprintf(buf, "nRetriedWrites..... %d\n", dev->nRetriedWrites);
++ buf += sprintf(buf, "nShortOpCaches..... %d\n", dev->nShortOpCaches);
++ buf += sprintf(buf, "nRetireBlocks...... %d\n", dev->nRetiredBlocks);
++ buf += sprintf(buf, "eccFixed........... %d\n", dev->eccFixed);
++ buf += sprintf(buf, "eccUnfixed......... %d\n", dev->eccUnfixed);
++ buf += sprintf(buf, "tagsEccFixed....... %d\n", dev->tagsEccFixed);
++ buf += sprintf(buf, "tagsEccUnfixed..... %d\n", dev->tagsEccUnfixed);
++ buf += sprintf(buf, "cacheHits.......... %d\n", dev->cacheHits);
++ buf += sprintf(buf, "nDeletedFiles...... %d\n", dev->nDeletedFiles);
++ buf += sprintf(buf, "nUnlinkedFiles..... %d\n", dev->nUnlinkedFiles);
++ buf +=
++ sprintf(buf, "nBackgroudDeletions %d\n", dev->nBackgroundDeletions);
++ buf += sprintf(buf, "useNANDECC......... %d\n", dev->useNANDECC);
++ buf += sprintf(buf, "isYaffs2........... %d\n", dev->isYaffs2);
++
++ return buf;
++}
++
++static int yaffs_proc_read(char *page,
++ char **start,
++ off_t offset, int count, int *eof, void *data)
++{
++ struct list_head *item;
++ char *buf = page;
++ int step = offset;
++ int n = 0;
++
++ /* Get proc_file_read() to step 'offset' by one on each sucessive call.
++ * We use 'offset' (*ppos) to indicate where we are in devList.
++ * This also assumes the user has posted a read buffer large
++ * enough to hold the complete output; but that's life in /proc.
++ */
++
++ *(int *)start = 1;
++
++ /* Print header first */
++ if (step == 0) {
++ buf += sprintf(buf, "YAFFS built:" __DATE__ " " __TIME__
++ "\n%s\n%s\n", yaffs_fs_c_version,
++ yaffs_guts_c_version);
++ }
++
++ /* hold lock_kernel while traversing yaffs_dev_list */
++ lock_kernel();
++
++ /* Locate and print the Nth entry. Order N-squared but N is small. */
++ list_for_each(item, &yaffs_dev_list) {
++ yaffs_Device *dev = list_entry(item, yaffs_Device, devList);
++ if (n < step) {
++ n++;
++ continue;
++ }
++ buf += sprintf(buf, "\nDevice %d \"%s\"\n", n, dev->name);
++ buf = yaffs_dump_dev(buf, dev);
++ break;
++ }
++ unlock_kernel();
++
++ return buf - page < count ? buf - page : count;
++}
++
++/**
++ * Set the verbosity of the warnings and error messages.
++ *
++ * Note that the names can only be a..z or _ with the current code.
++ */
++
++static struct {
++ char *mask_name;
++ unsigned mask_bitfield;
++} mask_flags[] = {
++ {"allocate", YAFFS_TRACE_ALLOCATE},
++ {"always", YAFFS_TRACE_ALWAYS},
++ {"bad_blocks", YAFFS_TRACE_BAD_BLOCKS},
++ {"buffers", YAFFS_TRACE_BUFFERS},
++ {"bug", YAFFS_TRACE_BUG},
++ {"checkpt", YAFFS_TRACE_CHECKPOINT},
++ {"deletion", YAFFS_TRACE_DELETION},
++ {"erase", YAFFS_TRACE_ERASE},
++ {"error", YAFFS_TRACE_ERROR},
++ {"gc_detail", YAFFS_TRACE_GC_DETAIL},
++ {"gc", YAFFS_TRACE_GC},
++ {"mtd", YAFFS_TRACE_MTD},
++ {"nandaccess", YAFFS_TRACE_NANDACCESS},
++ {"os", YAFFS_TRACE_OS},
++ {"scan_debug", YAFFS_TRACE_SCAN_DEBUG},
++ {"scan", YAFFS_TRACE_SCAN},
++ {"tracing", YAFFS_TRACE_TRACING},
++
++ {"verify", YAFFS_TRACE_VERIFY},
++ {"verify_nand", YAFFS_TRACE_VERIFY_NAND},
++ {"verify_full", YAFFS_TRACE_VERIFY_FULL},
++ {"verify_all", YAFFS_TRACE_VERIFY_ALL},
++
++ {"write", YAFFS_TRACE_WRITE},
++ {"all", 0xffffffff},
++ {"none", 0},
++ {NULL, 0},
++};
++
++#define MAX_MASK_NAME_LENGTH 40
++static int yaffs_proc_write(struct file *file, const char *buf,
++ unsigned long count, void *data)
++{
++ unsigned rg = 0, mask_bitfield;
++ char *end;
++ char *mask_name;
++ char *x;
++ char substring[MAX_MASK_NAME_LENGTH+1];
++ int i;
++ int done = 0;
++ int add, len = 0;
++ int pos = 0;
++
++ rg = yaffs_traceMask;
++
++ while (!done && (pos < count)) {
++ done = 1;
++ while ((pos < count) && isspace(buf[pos])) {
++ pos++;
++ }
++
++ switch (buf[pos]) {
++ case '+':
++ case '-':
++ case '=':
++ add = buf[pos];
++ pos++;
++ break;
++
++ default:
++ add = ' ';
++ break;
++ }
++ mask_name = NULL;
++
++ mask_bitfield = simple_strtoul(buf + pos, &end, 0);
++ if (end > buf + pos) {
++ mask_name = "numeral";
++ len = end - (buf + pos);
++ done = 0;
++ } else {
++ for(x = buf + pos, i = 0;
++ (*x == '_' || (*x >='a' && *x <= 'z')) &&
++ i <MAX_MASK_NAME_LENGTH; x++, i++, pos++)
++ substring[i] = *x;
++ substring[i] = '\0';
++
++ for (i = 0; mask_flags[i].mask_name != NULL; i++) {
++ //len = strlen(mask_flags[i].mask_name);
++ //if (strncmp(buf + pos, mask_flags[i].mask_name, len) == 0) {
++ if(strcmp(substring,mask_flags[i].mask_name) == 0){
++ mask_name = mask_flags[i].mask_name;
++ mask_bitfield = mask_flags[i].mask_bitfield;
++ done = 0;
++ break;
++ }
++ }
++ }
++
++ if (mask_name != NULL) {
++ // pos += len;
++ done = 0;
++ switch(add) {
++ case '-':
++ rg &= ~mask_bitfield;
++ break;
++ case '+':
++ rg |= mask_bitfield;
++ break;
++ case '=':
++ rg = mask_bitfield;
++ break;
++ default:
++ rg |= mask_bitfield;
++ break;
++ }
++ }
++ }
++
++ yaffs_traceMask = rg | YAFFS_TRACE_ALWAYS;
++
++ printk("new trace = 0x%08X\n",yaffs_traceMask);
++
++ if (rg & YAFFS_TRACE_ALWAYS) {
++ for (i = 0; mask_flags[i].mask_name != NULL; i++) {
++ char flag;
++ flag = ((rg & mask_flags[i].mask_bitfield) == mask_flags[i].mask_bitfield) ? '+' : '-';
++ printk("%c%s\n", flag, mask_flags[i].mask_name);
++ }
++ }
++
++ return count;
++}
++
++/* Stuff to handle installation of file systems */
++struct file_system_to_install {
++ struct file_system_type *fst;
++ int installed;
++};
++
++static struct file_system_to_install fs_to_install[] = {
++//#ifdef CONFIG_YAFFS_YAFFS1
++ {&yaffs_fs_type, 0},
++//#endif
++//#ifdef CONFIG_YAFFS_YAFFS2
++ {&yaffs2_fs_type, 0},
++//#endif
++ {NULL, 0}
++};
++
++static int __init init_yaffs_fs(void)
++{
++ int error = 0;
++ struct file_system_to_install *fsinst;
++
++ T(YAFFS_TRACE_ALWAYS,
++ ("yaffs " __DATE__ " " __TIME__ " Installing. \n"));
++
++ /* Install the proc_fs entry */
++ my_proc_entry = create_proc_entry("yaffs",
++ S_IRUGO | S_IFREG,
++ &proc_root);
++
++ if (my_proc_entry) {
++ my_proc_entry->write_proc = yaffs_proc_write;
++ my_proc_entry->read_proc = yaffs_proc_read;
++ my_proc_entry->data = NULL;
++ } else {
++ return -ENOMEM;
++ }
++
++ /* Now add the file system entries */
++
++ fsinst = fs_to_install;
++
++ while (fsinst->fst && !error) {
++ error = register_filesystem(fsinst->fst);
++ if (!error) {
++ fsinst->installed = 1;
++ }
++ fsinst++;
++ }
++
++ /* Any errors? uninstall */
++ if (error) {
++ fsinst = fs_to_install;
++
++ while (fsinst->fst) {
++ if (fsinst->installed) {
++ unregister_filesystem(fsinst->fst);
++ fsinst->installed = 0;
++ }
++ fsinst++;
++ }
++ }
++
++ return error;
++}
++
++static void __exit exit_yaffs_fs(void)
++{
++
++ struct file_system_to_install *fsinst;
++
++ T(YAFFS_TRACE_ALWAYS, ("yaffs " __DATE__ " " __TIME__
++ " removing. \n"));
++
++ remove_proc_entry("yaffs", &proc_root);
++
++ fsinst = fs_to_install;
++
++ while (fsinst->fst) {
++ if (fsinst->installed) {
++ unregister_filesystem(fsinst->fst);
++ fsinst->installed = 0;
++ }
++ fsinst++;
++ }
++
++}
++
++module_init(init_yaffs_fs)
++module_exit(exit_yaffs_fs)
++
++MODULE_DESCRIPTION("YAFFS2 - a NAND specific flash file system");
++MODULE_AUTHOR("Charles Manning, Aleph One Ltd., 2002-2006");
++MODULE_LICENSE("GPL");
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_guts.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_guts.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,7469 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++const char *yaffs_guts_c_version =
++ "$Id: yaffs_guts.c,v 1.49 2007-05-15 20:07:40 charles Exp $";
++
++#include "yportenv.h"
++
++#include "yaffsinterface.h"
++#include "yaffs_guts.h"
++#include "yaffs_tagsvalidity.h"
++
++#include "yaffs_tagscompat.h"
++#ifndef CONFIG_YAFFS_USE_OWN_SORT
++#include "yaffs_qsort.h"
++#endif
++#include "yaffs_nand.h"
++
++#include "yaffs_checkptrw.h"
++
++#include "yaffs_nand.h"
++#include "yaffs_packedtags2.h"
++
++
++#ifdef CONFIG_YAFFS_WINCE
++void yfsd_LockYAFFS(BOOL fsLockOnly);
++void yfsd_UnlockYAFFS(BOOL fsLockOnly);
++#endif
++
++#define YAFFS_PASSIVE_GC_CHUNKS 2
++
++#include "yaffs_ecc.h"
++
++
++/* Robustification (if it ever comes about...) */
++static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND);
++static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk);
++static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
++ const __u8 * data,
++ const yaffs_ExtendedTags * tags);
++static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
++ const yaffs_ExtendedTags * tags);
++
++/* Other local prototypes */
++static int yaffs_UnlinkObject( yaffs_Object *obj);
++static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj);
++
++static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList);
++
++static int yaffs_WriteNewChunkWithTagsToNAND(yaffs_Device * dev,
++ const __u8 * buffer,
++ yaffs_ExtendedTags * tags,
++ int useReserve);
++static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
++ int chunkInNAND, int inScan);
++
++static yaffs_Object *yaffs_CreateNewObject(yaffs_Device * dev, int number,
++ yaffs_ObjectType type);
++static void yaffs_AddObjectToDirectory(yaffs_Object * directory,
++ yaffs_Object * obj);
++static int yaffs_UpdateObjectHeader(yaffs_Object * in, const YCHAR * name,
++ int force, int isShrink, int shadows);
++static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj);
++static int yaffs_CheckStructures(void);
++static int yaffs_DeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, __u32 level,
++ int chunkOffset, int *limit);
++static int yaffs_DoGenericObjectDeletion(yaffs_Object * in);
++
++static yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blockNo);
++
++static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo);
++static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
++ int lineNo);
++
++static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
++ int chunkInNAND);
++
++static int yaffs_UnlinkWorker(yaffs_Object * obj);
++static void yaffs_DestroyObject(yaffs_Object * obj);
++
++static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId,
++ int chunkInObject);
++
++loff_t yaffs_GetFileSize(yaffs_Object * obj);
++
++static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr);
++
++static void yaffs_VerifyFreeChunks(yaffs_Device * dev);
++
++static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in);
++
++#ifdef YAFFS_PARANOID
++static int yaffs_CheckFileSanity(yaffs_Object * in);
++#else
++#define yaffs_CheckFileSanity(in)
++#endif
++
++static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in);
++static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId);
++
++static void yaffs_InvalidateCheckpoint(yaffs_Device *dev);
++
++static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode,
++ yaffs_ExtendedTags * tags);
++
++static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos);
++static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev,
++ yaffs_FileStructure * fStruct,
++ __u32 chunkId);
++
++
++/* Function to calculate chunk and offset */
++
++static void yaffs_AddrToChunk(yaffs_Device *dev, loff_t addr, __u32 *chunk, __u32 *offset)
++{
++ if(dev->chunkShift){
++ /* Easy-peasy power of 2 case */
++ *chunk = (__u32)(addr >> dev->chunkShift);
++ *offset = (__u32)(addr & dev->chunkMask);
++ }
++ else if(dev->crumbsPerChunk)
++ {
++ /* Case where we're using "crumbs" */
++ *offset = (__u32)(addr & dev->crumbMask);
++ addr >>= dev->crumbShift;
++ *chunk = ((__u32)addr)/dev->crumbsPerChunk;
++ *offset += ((addr - (*chunk * dev->crumbsPerChunk)) << dev->crumbShift);
++ }
++ else
++ YBUG();
++}
++
++/* Function to return the number of shifts for a power of 2 greater than or equal
++ * to the given number
++ * Note we don't try to cater for all possible numbers and this does not have to
++ * be hellishly efficient.
++ */
++
++static __u32 ShiftsGE(__u32 x)
++{
++ int extraBits;
++ int nShifts;
++
++ nShifts = extraBits = 0;
++
++ while(x>1){
++ if(x & 1) extraBits++;
++ x>>=1;
++ nShifts++;
++ }
++
++ if(extraBits)
++ nShifts++;
++
++ return nShifts;
++}
++
++/* Function to return the number of shifts to get a 1 in bit 0
++ */
++
++static __u32 ShiftDiv(__u32 x)
++{
++ int nShifts;
++
++ nShifts = 0;
++
++ if(!x) return 0;
++
++ while( !(x&1)){
++ x>>=1;
++ nShifts++;
++ }
++
++ return nShifts;
++}
++
++
++
++/*
++ * Temporary buffer manipulations.
++ */
++
++static int yaffs_InitialiseTempBuffers(yaffs_Device *dev)
++{
++ int i;
++ __u8 *buf = (__u8 *)1;
++
++ memset(dev->tempBuffer,0,sizeof(dev->tempBuffer));
++
++ for (i = 0; buf && i < YAFFS_N_TEMP_BUFFERS; i++) {
++ dev->tempBuffer[i].line = 0; /* not in use */
++ dev->tempBuffer[i].buffer = buf =
++ YMALLOC_DMA(dev->nDataBytesPerChunk);
++ }
++
++ return buf ? YAFFS_OK : YAFFS_FAIL;
++
++}
++
++static __u8 *yaffs_GetTempBuffer(yaffs_Device * dev, int lineNo)
++{
++ int i, j;
++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
++ if (dev->tempBuffer[i].line == 0) {
++ dev->tempBuffer[i].line = lineNo;
++ if ((i + 1) > dev->maxTemp) {
++ dev->maxTemp = i + 1;
++ for (j = 0; j <= i; j++)
++ dev->tempBuffer[j].maxLine =
++ dev->tempBuffer[j].line;
++ }
++
++ return dev->tempBuffer[i].buffer;
++ }
++ }
++
++ T(YAFFS_TRACE_BUFFERS,
++ (TSTR("Out of temp buffers at line %d, other held by lines:"),
++ lineNo));
++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
++ T(YAFFS_TRACE_BUFFERS, (TSTR(" %d "), dev->tempBuffer[i].line));
++ }
++ T(YAFFS_TRACE_BUFFERS, (TSTR(" " TENDSTR)));
++
++ /*
++ * If we got here then we have to allocate an unmanaged one
++ * This is not good.
++ */
++
++ dev->unmanagedTempAllocations++;
++ return YMALLOC(dev->nDataBytesPerChunk);
++
++}
++
++static void yaffs_ReleaseTempBuffer(yaffs_Device * dev, __u8 * buffer,
++ int lineNo)
++{
++ int i;
++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
++ if (dev->tempBuffer[i].buffer == buffer) {
++ dev->tempBuffer[i].line = 0;
++ return;
++ }
++ }
++
++ if (buffer) {
++ /* assume it is an unmanaged one. */
++ T(YAFFS_TRACE_BUFFERS,
++ (TSTR("Releasing unmanaged temp buffer in line %d" TENDSTR),
++ lineNo));
++ YFREE(buffer);
++ dev->unmanagedTempDeallocations++;
++ }
++
++}
++
++/*
++ * Determine if we have a managed buffer.
++ */
++int yaffs_IsManagedTempBuffer(yaffs_Device * dev, const __u8 * buffer)
++{
++ int i;
++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
++ if (dev->tempBuffer[i].buffer == buffer)
++ return 1;
++
++ }
++
++ for (i = 0; i < dev->nShortOpCaches; i++) {
++ if( dev->srCache[i].data == buffer )
++ return 1;
++
++ }
++
++ if (buffer == dev->checkpointBuffer)
++ return 1;
++
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("yaffs: unmaged buffer detected.\n" TENDSTR)));
++ return 0;
++}
++
++
++
++/*
++ * Chunk bitmap manipulations
++ */
++
++static Y_INLINE __u8 *yaffs_BlockBits(yaffs_Device * dev, int blk)
++{
++ if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("**>> yaffs: BlockBits block %d is not valid" TENDSTR),
++ blk));
++ YBUG();
++ }
++ return dev->chunkBits +
++ (dev->chunkBitmapStride * (blk - dev->internalStartBlock));
++}
++
++static Y_INLINE void yaffs_VerifyChunkBitId(yaffs_Device *dev, int blk, int chunk)
++{
++ if(blk < dev->internalStartBlock || blk > dev->internalEndBlock ||
++ chunk < 0 || chunk >= dev->nChunksPerBlock) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("**>> yaffs: Chunk Id (%d:%d) invalid"TENDSTR),blk,chunk));
++ YBUG();
++ }
++}
++
++static Y_INLINE void yaffs_ClearChunkBits(yaffs_Device * dev, int blk)
++{
++ __u8 *blkBits = yaffs_BlockBits(dev, blk);
++
++ memset(blkBits, 0, dev->chunkBitmapStride);
++}
++
++static Y_INLINE void yaffs_ClearChunkBit(yaffs_Device * dev, int blk, int chunk)
++{
++ __u8 *blkBits = yaffs_BlockBits(dev, blk);
++
++ yaffs_VerifyChunkBitId(dev,blk,chunk);
++
++ blkBits[chunk / 8] &= ~(1 << (chunk & 7));
++}
++
++static Y_INLINE void yaffs_SetChunkBit(yaffs_Device * dev, int blk, int chunk)
++{
++ __u8 *blkBits = yaffs_BlockBits(dev, blk);
++
++ yaffs_VerifyChunkBitId(dev,blk,chunk);
++
++ blkBits[chunk / 8] |= (1 << (chunk & 7));
++}
++
++static Y_INLINE int yaffs_CheckChunkBit(yaffs_Device * dev, int blk, int chunk)
++{
++ __u8 *blkBits = yaffs_BlockBits(dev, blk);
++ yaffs_VerifyChunkBitId(dev,blk,chunk);
++
++ return (blkBits[chunk / 8] & (1 << (chunk & 7))) ? 1 : 0;
++}
++
++static Y_INLINE int yaffs_StillSomeChunkBits(yaffs_Device * dev, int blk)
++{
++ __u8 *blkBits = yaffs_BlockBits(dev, blk);
++ int i;
++ for (i = 0; i < dev->chunkBitmapStride; i++) {
++ if (*blkBits)
++ return 1;
++ blkBits++;
++ }
++ return 0;
++}
++
++static int yaffs_CountChunkBits(yaffs_Device * dev, int blk)
++{
++ __u8 *blkBits = yaffs_BlockBits(dev, blk);
++ int i;
++ int n = 0;
++ for (i = 0; i < dev->chunkBitmapStride; i++) {
++ __u8 x = *blkBits;
++ while(x){
++ if(x & 1)
++ n++;
++ x >>=1;
++ }
++
++ blkBits++;
++ }
++ return n;
++}
++
++/*
++ * Verification code
++ */
++
++static int yaffs_SkipVerification(yaffs_Device *dev)
++{
++ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY | YAFFS_TRACE_VERIFY_FULL));
++}
++
++static int yaffs_SkipFullVerification(yaffs_Device *dev)
++{
++ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_FULL));
++}
++
++static int yaffs_SkipNANDVerification(yaffs_Device *dev)
++{
++ return !(yaffs_traceMask & (YAFFS_TRACE_VERIFY_NAND));
++}
++
++static const char * blockStateName[] = {
++"Unknown",
++"Needs scanning",
++"Scanning",
++"Empty",
++"Allocating",
++"Full",
++"Dirty",
++"Checkpoint",
++"Collecting",
++"Dead"
++};
++
++static void yaffs_VerifyBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n)
++{
++ int actuallyUsed;
++ int inUse;
++
++ if(yaffs_SkipVerification(dev))
++ return;
++
++ /* Report illegal runtime states */
++ if(bi->blockState <0 || bi->blockState >= YAFFS_NUMBER_OF_BLOCK_STATES)
++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has undefined state %d"TENDSTR),n,bi->blockState));
++
++ switch(bi->blockState){
++ case YAFFS_BLOCK_STATE_UNKNOWN:
++ case YAFFS_BLOCK_STATE_SCANNING:
++ case YAFFS_BLOCK_STATE_NEEDS_SCANNING:
++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has bad run-state %s"TENDSTR),
++ n,blockStateName[bi->blockState]));
++ }
++
++ /* Check pages in use and soft deletions are legal */
++
++ actuallyUsed = bi->pagesInUse - bi->softDeletions;
++
++ if(bi->pagesInUse < 0 || bi->pagesInUse > dev->nChunksPerBlock ||
++ bi->softDeletions < 0 || bi->softDeletions > dev->nChunksPerBlock ||
++ actuallyUsed < 0 || actuallyUsed > dev->nChunksPerBlock)
++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has illegal values pagesInUsed %d softDeletions %d"TENDSTR),
++ n,bi->pagesInUse,bi->softDeletions));
++
++
++ /* Check chunk bitmap legal */
++ inUse = yaffs_CountChunkBits(dev,n);
++ if(inUse != bi->pagesInUse)
++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has inconsistent values pagesInUse %d counted chunk bits %d"TENDSTR),
++ n,bi->pagesInUse,inUse));
++
++ /* Check that the sequence number is valid.
++ * Ten million is legal, but is very unlikely
++ */
++ if(dev->isYaffs2 &&
++ (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING || bi->blockState == YAFFS_BLOCK_STATE_FULL) &&
++ (bi->sequenceNumber < YAFFS_LOWEST_SEQUENCE_NUMBER || bi->sequenceNumber > 10000000 ))
++ T(YAFFS_TRACE_VERIFY,(TSTR("Block %d has suspect sequence number of %d"TENDSTR),
++ n,bi->sequenceNumber));
++
++}
++
++static void yaffs_VerifyCollectedBlock(yaffs_Device *dev,yaffs_BlockInfo *bi,int n)
++{
++ yaffs_VerifyBlock(dev,bi,n);
++
++ /* After collection the block should be in the erased state */
++ /* TODO: This will need to change if we do partial gc */
++
++ if(bi->blockState != YAFFS_BLOCK_STATE_EMPTY){
++ T(YAFFS_TRACE_ERROR,(TSTR("Block %d is in state %d after gc, should be erased"TENDSTR),
++ n,bi->blockState));
++ }
++}
++
++static void yaffs_VerifyBlocks(yaffs_Device *dev)
++{
++ int i;
++ int nBlocksPerState[YAFFS_NUMBER_OF_BLOCK_STATES];
++ int nIllegalBlockStates = 0;
++
++
++ if(yaffs_SkipVerification(dev))
++ return;
++
++ memset(nBlocksPerState,0,sizeof(nBlocksPerState));
++
++
++ for(i = dev->internalStartBlock; i <= dev->internalEndBlock; i++){
++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev,i);
++ yaffs_VerifyBlock(dev,bi,i);
++
++ if(bi->blockState >=0 && bi->blockState < YAFFS_NUMBER_OF_BLOCK_STATES)
++ nBlocksPerState[bi->blockState]++;
++ else
++ nIllegalBlockStates++;
++
++ }
++
++ T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR)));
++ T(YAFFS_TRACE_VERIFY,(TSTR("Block summary"TENDSTR)));
++
++ T(YAFFS_TRACE_VERIFY,(TSTR("%d blocks have illegal states"TENDSTR),nIllegalBlockStates));
++ if(nBlocksPerState[YAFFS_BLOCK_STATE_ALLOCATING] > 1)
++ T(YAFFS_TRACE_VERIFY,(TSTR("Too many allocating blocks"TENDSTR)));
++
++ for(i = 0; i < YAFFS_NUMBER_OF_BLOCK_STATES; i++)
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("%s %d blocks"TENDSTR),
++ blockStateName[i],nBlocksPerState[i]));
++
++ if(dev->blocksInCheckpoint != nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT])
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Checkpoint block count wrong dev %d count %d"TENDSTR),
++ dev->blocksInCheckpoint, nBlocksPerState[YAFFS_BLOCK_STATE_CHECKPOINT]));
++
++ if(dev->nErasedBlocks != nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY])
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Erased block count wrong dev %d count %d"TENDSTR),
++ dev->nErasedBlocks, nBlocksPerState[YAFFS_BLOCK_STATE_EMPTY]));
++
++ if(nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING] > 1)
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Too many collecting blocks %d (max is 1)"TENDSTR),
++ nBlocksPerState[YAFFS_BLOCK_STATE_COLLECTING]));
++
++ T(YAFFS_TRACE_VERIFY,(TSTR(""TENDSTR)));
++
++}
++
++/*
++ * Verify the object header. oh must be valid, but obj and tags may be NULL in which
++ * case those tests will not be performed.
++ */
++static void yaffs_VerifyObjectHeader(yaffs_Object *obj, yaffs_ObjectHeader *oh, yaffs_ExtendedTags *tags, int parentCheck)
++{
++ if(yaffs_SkipVerification(obj->myDev))
++ return;
++
++ if(!(tags && obj && oh)){
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Verifying object header tags %x obj %x oh %x"TENDSTR),
++ (__u32)tags,(__u32)obj,(__u32)oh));
++ return;
++ }
++
++ if(oh->type <= YAFFS_OBJECT_TYPE_UNKNOWN ||
++ oh->type > YAFFS_OBJECT_TYPE_MAX)
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d header type is illegal value 0x%x"TENDSTR),
++ tags->objectId, oh->type));
++
++ if(tags->objectId != obj->objectId)
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d header mismatch objectId %d"TENDSTR),
++ tags->objectId, obj->objectId));
++
++
++ /*
++ * Check that the object's parent ids match if parentCheck requested.
++ *
++ * Tests do not apply to the root object.
++ */
++
++ if(parentCheck && tags->objectId > 1 && !obj->parent)
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d header mismatch parentId %d obj->parent is NULL"TENDSTR),
++ tags->objectId, oh->parentObjectId));
++
++
++ if(parentCheck && obj->parent &&
++ oh->parentObjectId != obj->parent->objectId &&
++ (oh->parentObjectId != YAFFS_OBJECTID_UNLINKED ||
++ obj->parent->objectId != YAFFS_OBJECTID_DELETED))
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d header mismatch parentId %d parentObjectId %d"TENDSTR),
++ tags->objectId, oh->parentObjectId, obj->parent->objectId));
++
++
++ if(tags->objectId > 1 && oh->name[0] == 0) /* Null name */
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d header name is NULL"TENDSTR),
++ obj->objectId));
++
++ if(tags->objectId > 1 && ((__u8)(oh->name[0])) == 0xff) /* Trashed name */
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d header name is 0xFF"TENDSTR),
++ obj->objectId));
++}
++
++
++
++static int yaffs_VerifyTnodeWorker(yaffs_Object * obj, yaffs_Tnode * tn,
++ __u32 level, int chunkOffset)
++{
++ int i;
++ yaffs_Device *dev = obj->myDev;
++ int ok = 1;
++ int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++
++ if (tn) {
++ if (level > 0) {
++
++ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){
++ if (tn->internal[i]) {
++ ok = yaffs_VerifyTnodeWorker(obj,
++ tn->internal[i],
++ level - 1,
++ (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i);
++ }
++ }
++ } else if (level == 0) {
++ int i;
++ yaffs_ExtendedTags tags;
++ __u32 objectId = obj->objectId;
++
++ chunkOffset <<= YAFFS_TNODES_LEVEL0_BITS;
++
++ for(i = 0; i < YAFFS_NTNODES_LEVEL0; i++){
++ __u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
++
++ if(theChunk > 0){
++ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),tags.objectId,tags.chunkId,theChunk)); */
++ yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags);
++ if(tags.objectId != objectId || tags.chunkId != chunkOffset){
++ T(~0,(TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
++ objectId, chunkOffset, theChunk,
++ tags.objectId, tags.chunkId));
++ }
++ }
++ chunkOffset++;
++ }
++ }
++ }
++
++ return ok;
++
++}
++
++
++static void yaffs_VerifyFile(yaffs_Object *obj)
++{
++ int requiredTallness;
++ int actualTallness;
++ __u32 lastChunk;
++ __u32 x;
++ __u32 i;
++ int ok;
++ yaffs_Device *dev;
++ yaffs_ExtendedTags tags;
++ yaffs_Tnode *tn;
++ __u32 objectId;
++
++ if(obj && yaffs_SkipVerification(obj->myDev))
++ return;
++
++ dev = obj->myDev;
++ objectId = obj->objectId;
++
++ /* Check file size is consistent with tnode depth */
++ lastChunk = obj->variant.fileVariant.fileSize / dev->nDataBytesPerChunk + 1;
++ x = lastChunk >> YAFFS_TNODES_LEVEL0_BITS;
++ requiredTallness = 0;
++ while (x> 0) {
++ x >>= YAFFS_TNODES_INTERNAL_BITS;
++ requiredTallness++;
++ }
++
++ actualTallness = obj->variant.fileVariant.topLevel;
++
++ if(requiredTallness > actualTallness )
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d had tnode tallness %d, needs to be %d"TENDSTR),
++ obj->objectId,actualTallness, requiredTallness));
++
++
++ /* Check that the chunks in the tnode tree are all correct.
++ * We do this by scanning through the tnode tree and
++ * checking the tags for every chunk match.
++ */
++
++ if(yaffs_SkipNANDVerification(dev))
++ return;
++
++ for(i = 1; i <= lastChunk; i++){
++ tn = yaffs_FindLevel0Tnode(dev, &obj->variant.fileVariant,i);
++
++ if (tn) {
++ __u32 theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
++ if(theChunk > 0){
++ /* T(~0,(TSTR("verifying (%d:%d) %d"TENDSTR),objectId,i,theChunk)); */
++ yaffs_ReadChunkWithTagsFromNAND(dev,theChunk,NULL, &tags);
++ if(tags.objectId != objectId || tags.chunkId != i){
++ T(~0,(TSTR("Object %d chunkId %d NAND mismatch chunk %d tags (%d:%d)"TENDSTR),
++ objectId, i, theChunk,
++ tags.objectId, tags.chunkId));
++ }
++ }
++ }
++
++ }
++
++}
++
++static void yaffs_VerifyDirectory(yaffs_Object *obj)
++{
++ if(obj && yaffs_SkipVerification(obj->myDev))
++ return;
++
++}
++
++static void yaffs_VerifyHardLink(yaffs_Object *obj)
++{
++ if(obj && yaffs_SkipVerification(obj->myDev))
++ return;
++
++ /* Verify sane equivalent object */
++}
++
++static void yaffs_VerifySymlink(yaffs_Object *obj)
++{
++ if(obj && yaffs_SkipVerification(obj->myDev))
++ return;
++
++ /* Verify symlink string */
++}
++
++static void yaffs_VerifySpecial(yaffs_Object *obj)
++{
++ if(obj && yaffs_SkipVerification(obj->myDev))
++ return;
++}
++
++static void yaffs_VerifyObject(yaffs_Object *obj)
++{
++ yaffs_Device *dev;
++
++ __u32 chunkMin;
++ __u32 chunkMax;
++
++ __u32 chunkIdOk;
++ __u32 chunkIsLive;
++
++ if(!obj)
++ return;
++
++ dev = obj->myDev;
++
++ if(yaffs_SkipVerification(dev))
++ return;
++
++ /* Check sane object header chunk */
++
++ chunkMin = dev->internalStartBlock * dev->nChunksPerBlock;
++ chunkMax = (dev->internalEndBlock+1) * dev->nChunksPerBlock - 1;
++
++ chunkIdOk = (obj->chunkId >= chunkMin && obj->chunkId <= chunkMax);
++ chunkIsLive = chunkIdOk &&
++ yaffs_CheckChunkBit(dev,
++ obj->chunkId / dev->nChunksPerBlock,
++ obj->chunkId % dev->nChunksPerBlock);
++ if(!obj->fake &&
++ (!chunkIdOk || !chunkIsLive)) {
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d has chunkId %d %s %s"TENDSTR),
++ obj->objectId,obj->chunkId,
++ chunkIdOk ? "" : ",out of range",
++ chunkIsLive || !chunkIdOk ? "" : ",marked as deleted"));
++ }
++
++ if(chunkIdOk && chunkIsLive &&!yaffs_SkipNANDVerification(dev)) {
++ yaffs_ExtendedTags tags;
++ yaffs_ObjectHeader *oh;
++ __u8 *buffer = yaffs_GetTempBuffer(dev,__LINE__);
++
++ oh = (yaffs_ObjectHeader *)buffer;
++
++ yaffs_ReadChunkWithTagsFromNAND(dev, obj->chunkId,buffer, &tags);
++
++ yaffs_VerifyObjectHeader(obj,oh,&tags,1);
++
++ yaffs_ReleaseTempBuffer(dev,buffer,__LINE__);
++ }
++
++ /* Verify it has a parent */
++ if(obj && !obj->fake &&
++ (!obj->parent || obj->parent->myDev != dev)){
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d has parent pointer %p which does not look like an object"TENDSTR),
++ obj->objectId,obj->parent));
++ }
++
++ /* Verify parent is a directory */
++ if(obj->parent && obj->parent->variantType != YAFFS_OBJECT_TYPE_DIRECTORY){
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d's parent is not a directory (type %d)"TENDSTR),
++ obj->objectId,obj->parent->variantType));
++ }
++
++ switch(obj->variantType){
++ case YAFFS_OBJECT_TYPE_FILE:
++ yaffs_VerifyFile(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_SYMLINK:
++ yaffs_VerifySymlink(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
++ yaffs_VerifyDirectory(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_HARDLINK:
++ yaffs_VerifyHardLink(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_SPECIAL:
++ yaffs_VerifySpecial(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_UNKNOWN:
++ default:
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Obj %d has illegaltype %d"TENDSTR),
++ obj->objectId,obj->variantType));
++ break;
++ }
++
++
++}
++
++static void yaffs_VerifyObjects(yaffs_Device *dev)
++{
++ yaffs_Object *obj;
++ int i;
++ struct list_head *lh;
++
++ if(yaffs_SkipVerification(dev))
++ return;
++
++ /* Iterate through the objects in each hash entry */
++
++ for(i = 0; i < YAFFS_NOBJECT_BUCKETS; i++){
++ list_for_each(lh, &dev->objectBucket[i].list) {
++ if (lh) {
++ obj = list_entry(lh, yaffs_Object, hashLink);
++ yaffs_VerifyObject(obj);
++ }
++ }
++ }
++
++}
++
++
++/*
++ * Simple hash function. Needs to have a reasonable spread
++ */
++
++static Y_INLINE int yaffs_HashFunction(int n)
++{
++ n = abs(n);
++ return (n % YAFFS_NOBJECT_BUCKETS);
++}
++
++/*
++ * Access functions to useful fake objects
++ */
++
++yaffs_Object *yaffs_Root(yaffs_Device * dev)
++{
++ return dev->rootDir;
++}
++
++yaffs_Object *yaffs_LostNFound(yaffs_Device * dev)
++{
++ return dev->lostNFoundDir;
++}
++
++
++/*
++ * Erased NAND checking functions
++ */
++
++int yaffs_CheckFF(__u8 * buffer, int nBytes)
++{
++ /* Horrible, slow implementation */
++ while (nBytes--) {
++ if (*buffer != 0xFF)
++ return 0;
++ buffer++;
++ }
++ return 1;
++}
++
++static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
++ int chunkInNAND)
++{
++
++ int retval = YAFFS_OK;
++ __u8 *data = yaffs_GetTempBuffer(dev, __LINE__);
++ yaffs_ExtendedTags tags;
++ int result;
++
++ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunkInNAND, data, &tags);
++
++ if(tags.eccResult > YAFFS_ECC_RESULT_NO_ERROR)
++ retval = YAFFS_FAIL;
++
++
++ if (!yaffs_CheckFF(data, dev->nDataBytesPerChunk) || tags.chunkUsed) {
++ T(YAFFS_TRACE_NANDACCESS,
++ (TSTR("Chunk %d not erased" TENDSTR), chunkInNAND));
++ retval = YAFFS_FAIL;
++ }
++
++ yaffs_ReleaseTempBuffer(dev, data, __LINE__);
++
++ return retval;
++
++}
++
++
++static int yaffs_WriteNewChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
++ const __u8 * data,
++ yaffs_ExtendedTags * tags,
++ int useReserve)
++{
++ int attempts = 0;
++ int writeOk = 0;
++ int chunk;
++
++ yaffs_InvalidateCheckpoint(dev);
++
++ do {
++ yaffs_BlockInfo *bi = 0;
++ int erasedOk = 0;
++
++ chunk = yaffs_AllocateChunk(dev, useReserve, &bi);
++ if (chunk < 0) {
++ /* no space */
++ break;
++ }
++
++ /* First check this chunk is erased, if it needs
++ * checking. The checking policy (unless forced
++ * always on) is as follows:
++ *
++ * Check the first page we try to write in a block.
++ * If the check passes then we don't need to check any
++ * more. If the check fails, we check again...
++ * If the block has been erased, we don't need to check.
++ *
++ * However, if the block has been prioritised for gc,
++ * then we think there might be something odd about
++ * this block and stop using it.
++ *
++ * Rationale: We should only ever see chunks that have
++ * not been erased if there was a partially written
++ * chunk due to power loss. This checking policy should
++ * catch that case with very few checks and thus save a
++ * lot of checks that are most likely not needed.
++ */
++ if (bi->gcPrioritise) {
++ yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
++ /* try another chunk */
++ continue;
++ }
++
++ /* let's give it a try */
++ attempts++;
++
++#ifdef CONFIG_YAFFS_ALWAYS_CHECK_CHUNK_ERASED
++ bi->skipErasedCheck = 0;
++#endif
++ if (!bi->skipErasedCheck) {
++ erasedOk = yaffs_CheckChunkErased(dev, chunk);
++ if (erasedOk != YAFFS_OK) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR ("**>> yaffs chunk %d was not erased"
++ TENDSTR), chunk));
++
++ /* try another chunk */
++ continue;
++ }
++ bi->skipErasedCheck = 1;
++ }
++
++ writeOk = yaffs_WriteChunkWithTagsToNAND(dev, chunk,
++ data, tags);
++ if (writeOk != YAFFS_OK) {
++ yaffs_HandleWriteChunkError(dev, chunk, erasedOk);
++ /* try another chunk */
++ continue;
++ }
++
++ /* Copy the data into the robustification buffer */
++ yaffs_HandleWriteChunkOk(dev, chunk, data, tags);
++
++ } while (writeOk != YAFFS_OK && attempts < yaffs_wr_attempts);
++
++ if (attempts > 1) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("**>> yaffs write required %d attempts" TENDSTR),
++ attempts));
++
++ dev->nRetriedWrites += (attempts - 1);
++ }
++
++ return chunk;
++}
++
++/*
++ * Block retiring for handling a broken block.
++ */
++
++static void yaffs_RetireBlock(yaffs_Device * dev, int blockInNAND)
++{
++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
++
++ yaffs_InvalidateCheckpoint(dev);
++
++ yaffs_MarkBlockBad(dev, blockInNAND);
++
++ bi->blockState = YAFFS_BLOCK_STATE_DEAD;
++ bi->gcPrioritise = 0;
++ bi->needsRetiring = 0;
++
++ dev->nRetiredBlocks++;
++}
++
++/*
++ * Functions for robustisizing TODO
++ *
++ */
++
++static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
++ const __u8 * data,
++ const yaffs_ExtendedTags * tags)
++{
++}
++
++static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
++ const yaffs_ExtendedTags * tags)
++{
++}
++
++void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi)
++{
++ if(!bi->gcPrioritise){
++ bi->gcPrioritise = 1;
++ dev->hasPendingPrioritisedGCs = 1;
++ bi->chunkErrorStrikes ++;
++
++ if(bi->chunkErrorStrikes > 3){
++ bi->needsRetiring = 1; /* Too many stikes, so retire this */
++ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Block struck out" TENDSTR)));
++
++ }
++
++ }
++}
++
++static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND, int erasedOk)
++{
++
++ int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockInNAND);
++
++ yaffs_HandleChunkError(dev,bi);
++
++
++ if(erasedOk ) {
++ /* Was an actual write failure, so mark the block for retirement */
++ bi->needsRetiring = 1;
++ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
++ (TSTR("**>> Block %d needs retiring" TENDSTR), blockInNAND));
++
++
++ }
++
++ /* Delete the chunk */
++ yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
++}
++
++
++/*---------------- Name handling functions ------------*/
++
++static __u16 yaffs_CalcNameSum(const YCHAR * name)
++{
++ __u16 sum = 0;
++ __u16 i = 1;
++
++ YUCHAR *bname = (YUCHAR *) name;
++ if (bname) {
++ while ((*bname) && (i < (YAFFS_MAX_NAME_LENGTH/2))) {
++
++#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
++ sum += yaffs_toupper(*bname) * i;
++#else
++ sum += (*bname) * i;
++#endif
++ i++;
++ bname++;
++ }
++ }
++ return sum;
++}
++
++static void yaffs_SetObjectName(yaffs_Object * obj, const YCHAR * name)
++{
++#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
++ if (name && yaffs_strlen(name) <= YAFFS_SHORT_NAME_LENGTH) {
++ yaffs_strcpy(obj->shortName, name);
++ } else {
++ obj->shortName[0] = _Y('\0');
++ }
++#endif
++ obj->sum = yaffs_CalcNameSum(name);
++}
++
++/*-------------------- TNODES -------------------
++
++ * List of spare tnodes
++ * The list is hooked together using the first pointer
++ * in the tnode.
++ */
++
++/* yaffs_CreateTnodes creates a bunch more tnodes and
++ * adds them to the tnode free list.
++ * Don't use this function directly
++ */
++
++static int yaffs_CreateTnodes(yaffs_Device * dev, int nTnodes)
++{
++ int i;
++ int tnodeSize;
++ yaffs_Tnode *newTnodes;
++ __u8 *mem;
++ yaffs_Tnode *curr;
++ yaffs_Tnode *next;
++ yaffs_TnodeList *tnl;
++
++ if (nTnodes < 1)
++ return YAFFS_OK;
++
++ /* Calculate the tnode size in bytes for variable width tnode support.
++ * Must be a multiple of 32-bits */
++ tnodeSize = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++
++ /* make these things */
++
++ newTnodes = YMALLOC(nTnodes * tnodeSize);
++ mem = (__u8 *)newTnodes;
++
++ if (!newTnodes) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("yaffs: Could not allocate Tnodes" TENDSTR)));
++ return YAFFS_FAIL;
++ }
++
++ /* Hook them into the free list */
++#if 0
++ for (i = 0; i < nTnodes - 1; i++) {
++ newTnodes[i].internal[0] = &newTnodes[i + 1];
++#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
++ newTnodes[i].internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
++#endif
++ }
++
++ newTnodes[nTnodes - 1].internal[0] = dev->freeTnodes;
++#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
++ newTnodes[nTnodes - 1].internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
++#endif
++ dev->freeTnodes = newTnodes;
++#else
++ /* New hookup for wide tnodes */
++ for(i = 0; i < nTnodes -1; i++) {
++ curr = (yaffs_Tnode *) &mem[i * tnodeSize];
++ next = (yaffs_Tnode *) &mem[(i+1) * tnodeSize];
++ curr->internal[0] = next;
++ }
++
++ curr = (yaffs_Tnode *) &mem[(nTnodes - 1) * tnodeSize];
++ curr->internal[0] = dev->freeTnodes;
++ dev->freeTnodes = (yaffs_Tnode *)mem;
++
++#endif
++
++
++ dev->nFreeTnodes += nTnodes;
++ dev->nTnodesCreated += nTnodes;
++
++ /* Now add this bunch of tnodes to a list for freeing up.
++ * NB If we can't add this to the management list it isn't fatal
++ * but it just means we can't free this bunch of tnodes later.
++ */
++
++ tnl = YMALLOC(sizeof(yaffs_TnodeList));
++ if (!tnl) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("yaffs: Could not add tnodes to management list" TENDSTR)));
++ return YAFFS_FAIL;
++
++ } else {
++ tnl->tnodes = newTnodes;
++ tnl->next = dev->allocatedTnodeList;
++ dev->allocatedTnodeList = tnl;
++ }
++
++ T(YAFFS_TRACE_ALLOCATE, (TSTR("yaffs: Tnodes added" TENDSTR)));
++
++ return YAFFS_OK;
++}
++
++/* GetTnode gets us a clean tnode. Tries to make allocate more if we run out */
++
++static yaffs_Tnode *yaffs_GetTnodeRaw(yaffs_Device * dev)
++{
++ yaffs_Tnode *tn = NULL;
++
++ /* If there are none left make more */
++ if (!dev->freeTnodes) {
++ yaffs_CreateTnodes(dev, YAFFS_ALLOCATION_NTNODES);
++ }
++
++ if (dev->freeTnodes) {
++ tn = dev->freeTnodes;
++#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
++ if (tn->internal[YAFFS_NTNODES_INTERNAL] != (void *)1) {
++ /* Hoosterman, this thing looks like it isn't in the list */
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("yaffs: Tnode list bug 1" TENDSTR)));
++ }
++#endif
++ dev->freeTnodes = dev->freeTnodes->internal[0];
++ dev->nFreeTnodes--;
++ }
++
++ return tn;
++}
++
++static yaffs_Tnode *yaffs_GetTnode(yaffs_Device * dev)
++{
++ yaffs_Tnode *tn = yaffs_GetTnodeRaw(dev);
++
++ if(tn)
++ memset(tn, 0, (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
++
++ return tn;
++}
++
++/* FreeTnode frees up a tnode and puts it back on the free list */
++static void yaffs_FreeTnode(yaffs_Device * dev, yaffs_Tnode * tn)
++{
++ if (tn) {
++#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
++ if (tn->internal[YAFFS_NTNODES_INTERNAL] != 0) {
++ /* Hoosterman, this thing looks like it is already in the list */
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("yaffs: Tnode list bug 2" TENDSTR)));
++ }
++ tn->internal[YAFFS_NTNODES_INTERNAL] = (void *)1;
++#endif
++ tn->internal[0] = dev->freeTnodes;
++ dev->freeTnodes = tn;
++ dev->nFreeTnodes++;
++ }
++}
++
++static void yaffs_DeinitialiseTnodes(yaffs_Device * dev)
++{
++ /* Free the list of allocated tnodes */
++ yaffs_TnodeList *tmp;
++
++ while (dev->allocatedTnodeList) {
++ tmp = dev->allocatedTnodeList->next;
++
++ YFREE(dev->allocatedTnodeList->tnodes);
++ YFREE(dev->allocatedTnodeList);
++ dev->allocatedTnodeList = tmp;
++
++ }
++
++ dev->freeTnodes = NULL;
++ dev->nFreeTnodes = 0;
++}
++
++static void yaffs_InitialiseTnodes(yaffs_Device * dev)
++{
++ dev->allocatedTnodeList = NULL;
++ dev->freeTnodes = NULL;
++ dev->nFreeTnodes = 0;
++ dev->nTnodesCreated = 0;
++
++}
++
++
++void yaffs_PutLevel0Tnode(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos, unsigned val)
++{
++ __u32 *map = (__u32 *)tn;
++ __u32 bitInMap;
++ __u32 bitInWord;
++ __u32 wordInMap;
++ __u32 mask;
++
++ pos &= YAFFS_TNODES_LEVEL0_MASK;
++ val >>= dev->chunkGroupBits;
++
++ bitInMap = pos * dev->tnodeWidth;
++ wordInMap = bitInMap /32;
++ bitInWord = bitInMap & (32 -1);
++
++ mask = dev->tnodeMask << bitInWord;
++
++ map[wordInMap] &= ~mask;
++ map[wordInMap] |= (mask & (val << bitInWord));
++
++ if(dev->tnodeWidth > (32-bitInWord)) {
++ bitInWord = (32 - bitInWord);
++ wordInMap++;;
++ mask = dev->tnodeMask >> (/*dev->tnodeWidth -*/ bitInWord);
++ map[wordInMap] &= ~mask;
++ map[wordInMap] |= (mask & (val >> bitInWord));
++ }
++}
++
++static __u32 yaffs_GetChunkGroupBase(yaffs_Device *dev, yaffs_Tnode *tn, unsigned pos)
++{
++ __u32 *map = (__u32 *)tn;
++ __u32 bitInMap;
++ __u32 bitInWord;
++ __u32 wordInMap;
++ __u32 val;
++
++ pos &= YAFFS_TNODES_LEVEL0_MASK;
++
++ bitInMap = pos * dev->tnodeWidth;
++ wordInMap = bitInMap /32;
++ bitInWord = bitInMap & (32 -1);
++
++ val = map[wordInMap] >> bitInWord;
++
++ if(dev->tnodeWidth > (32-bitInWord)) {
++ bitInWord = (32 - bitInWord);
++ wordInMap++;;
++ val |= (map[wordInMap] << bitInWord);
++ }
++
++ val &= dev->tnodeMask;
++ val <<= dev->chunkGroupBits;
++
++ return val;
++}
++
++/* ------------------- End of individual tnode manipulation -----------------*/
++
++/* ---------Functions to manipulate the look-up tree (made up of tnodes) ------
++ * The look up tree is represented by the top tnode and the number of topLevel
++ * in the tree. 0 means only the level 0 tnode is in the tree.
++ */
++
++/* FindLevel0Tnode finds the level 0 tnode, if one exists. */
++static yaffs_Tnode *yaffs_FindLevel0Tnode(yaffs_Device * dev,
++ yaffs_FileStructure * fStruct,
++ __u32 chunkId)
++{
++
++ yaffs_Tnode *tn = fStruct->top;
++ __u32 i;
++ int requiredTallness;
++ int level = fStruct->topLevel;
++
++ /* Check sane level and chunk Id */
++ if (level < 0 || level > YAFFS_TNODES_MAX_LEVEL) {
++ return NULL;
++ }
++
++ if (chunkId > YAFFS_MAX_CHUNK_ID) {
++ return NULL;
++ }
++
++ /* First check we're tall enough (ie enough topLevel) */
++
++ i = chunkId >> YAFFS_TNODES_LEVEL0_BITS;
++ requiredTallness = 0;
++ while (i) {
++ i >>= YAFFS_TNODES_INTERNAL_BITS;
++ requiredTallness++;
++ }
++
++ if (requiredTallness > fStruct->topLevel) {
++ /* Not tall enough, so we can't find it, return NULL. */
++ return NULL;
++ }
++
++ /* Traverse down to level 0 */
++ while (level > 0 && tn) {
++ tn = tn->
++ internal[(chunkId >>
++ ( YAFFS_TNODES_LEVEL0_BITS +
++ (level - 1) *
++ YAFFS_TNODES_INTERNAL_BITS)
++ ) &
++ YAFFS_TNODES_INTERNAL_MASK];
++ level--;
++
++ }
++
++ return tn;
++}
++
++/* AddOrFindLevel0Tnode finds the level 0 tnode if it exists, otherwise first expands the tree.
++ * This happens in two steps:
++ * 1. If the tree isn't tall enough, then make it taller.
++ * 2. Scan down the tree towards the level 0 tnode adding tnodes if required.
++ *
++ * Used when modifying the tree.
++ *
++ * If the tn argument is NULL, then a fresh tnode will be added otherwise the specified tn will
++ * be plugged into the ttree.
++ */
++
++static yaffs_Tnode *yaffs_AddOrFindLevel0Tnode(yaffs_Device * dev,
++ yaffs_FileStructure * fStruct,
++ __u32 chunkId,
++ yaffs_Tnode *passedTn)
++{
++
++ int requiredTallness;
++ int i;
++ int l;
++ yaffs_Tnode *tn;
++
++ __u32 x;
++
++
++ /* Check sane level and page Id */
++ if (fStruct->topLevel < 0 || fStruct->topLevel > YAFFS_TNODES_MAX_LEVEL) {
++ return NULL;
++ }
++
++ if (chunkId > YAFFS_MAX_CHUNK_ID) {
++ return NULL;
++ }
++
++ /* First check we're tall enough (ie enough topLevel) */
++
++ x = chunkId >> YAFFS_TNODES_LEVEL0_BITS;
++ requiredTallness = 0;
++ while (x) {
++ x >>= YAFFS_TNODES_INTERNAL_BITS;
++ requiredTallness++;
++ }
++
++
++ if (requiredTallness > fStruct->topLevel) {
++ /* Not tall enough,gotta make the tree taller */
++ for (i = fStruct->topLevel; i < requiredTallness; i++) {
++
++ tn = yaffs_GetTnode(dev);
++
++ if (tn) {
++ tn->internal[0] = fStruct->top;
++ fStruct->top = tn;
++ } else {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("yaffs: no more tnodes" TENDSTR)));
++ }
++ }
++
++ fStruct->topLevel = requiredTallness;
++ }
++
++ /* Traverse down to level 0, adding anything we need */
++
++ l = fStruct->topLevel;
++ tn = fStruct->top;
++
++ if(l > 0) {
++ while (l > 0 && tn) {
++ x = (chunkId >>
++ ( YAFFS_TNODES_LEVEL0_BITS +
++ (l - 1) * YAFFS_TNODES_INTERNAL_BITS)) &
++ YAFFS_TNODES_INTERNAL_MASK;
++
++
++ if((l>1) && !tn->internal[x]){
++ /* Add missing non-level-zero tnode */
++ tn->internal[x] = yaffs_GetTnode(dev);
++
++ } else if(l == 1) {
++ /* Looking from level 1 at level 0 */
++ if (passedTn) {
++ /* If we already have one, then release it.*/
++ if(tn->internal[x])
++ yaffs_FreeTnode(dev,tn->internal[x]);
++ tn->internal[x] = passedTn;
++
++ } else if(!tn->internal[x]) {
++ /* Don't have one, none passed in */
++ tn->internal[x] = yaffs_GetTnode(dev);
++ }
++ }
++
++ tn = tn->internal[x];
++ l--;
++ }
++ } else {
++ /* top is level 0 */
++ if(passedTn) {
++ memcpy(tn,passedTn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
++ yaffs_FreeTnode(dev,passedTn);
++ }
++ }
++
++ return tn;
++}
++
++static int yaffs_FindChunkInGroup(yaffs_Device * dev, int theChunk,
++ yaffs_ExtendedTags * tags, int objectId,
++ int chunkInInode)
++{
++ int j;
++
++ for (j = 0; theChunk && j < dev->chunkGroupSize; j++) {
++ if (yaffs_CheckChunkBit
++ (dev, theChunk / dev->nChunksPerBlock,
++ theChunk % dev->nChunksPerBlock)) {
++ yaffs_ReadChunkWithTagsFromNAND(dev, theChunk, NULL,
++ tags);
++ if (yaffs_TagsMatch(tags, objectId, chunkInInode)) {
++ /* found it; */
++ return theChunk;
++
++ }
++ }
++ theChunk++;
++ }
++ return -1;
++}
++
++
++/* DeleteWorker scans backwards through the tnode tree and deletes all the
++ * chunks and tnodes in the file
++ * Returns 1 if the tree was deleted.
++ * Returns 0 if it stopped early due to hitting the limit and the delete is incomplete.
++ */
++
++static int yaffs_DeleteWorker(yaffs_Object * in, yaffs_Tnode * tn, __u32 level,
++ int chunkOffset, int *limit)
++{
++ int i;
++ int chunkInInode;
++ int theChunk;
++ yaffs_ExtendedTags tags;
++ int foundChunk;
++ yaffs_Device *dev = in->myDev;
++
++ int allDone = 1;
++
++ if (tn) {
++ if (level > 0) {
++
++ for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
++ i--) {
++ if (tn->internal[i]) {
++ if (limit && (*limit) < 0) {
++ allDone = 0;
++ } else {
++ allDone =
++ yaffs_DeleteWorker(in,
++ tn->
++ internal
++ [i],
++ level -
++ 1,
++ (chunkOffset
++ <<
++ YAFFS_TNODES_INTERNAL_BITS)
++ + i,
++ limit);
++ }
++ if (allDone) {
++ yaffs_FreeTnode(dev,
++ tn->
++ internal[i]);
++ tn->internal[i] = NULL;
++ }
++ }
++
++ }
++ return (allDone) ? 1 : 0;
++ } else if (level == 0) {
++ int hitLimit = 0;
++
++ for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0 && !hitLimit;
++ i--) {
++ theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
++ if (theChunk) {
++
++ chunkInInode =
++ (chunkOffset <<
++ YAFFS_TNODES_LEVEL0_BITS) + i;
++
++ foundChunk =
++ yaffs_FindChunkInGroup(dev,
++ theChunk,
++ &tags,
++ in->objectId,
++ chunkInInode);
++
++ if (foundChunk > 0) {
++ yaffs_DeleteChunk(dev,
++ foundChunk, 1,
++ __LINE__);
++ in->nDataChunks--;
++ if (limit) {
++ *limit = *limit - 1;
++ if (*limit <= 0) {
++ hitLimit = 1;
++ }
++ }
++
++ }
++
++ yaffs_PutLevel0Tnode(dev,tn,i,0);
++ }
++
++ }
++ return (i < 0) ? 1 : 0;
++
++ }
++
++ }
++
++ return 1;
++
++}
++
++static void yaffs_SoftDeleteChunk(yaffs_Device * dev, int chunk)
++{
++
++ yaffs_BlockInfo *theBlock;
++
++ T(YAFFS_TRACE_DELETION, (TSTR("soft delete chunk %d" TENDSTR), chunk));
++
++ theBlock = yaffs_GetBlockInfo(dev, chunk / dev->nChunksPerBlock);
++ if (theBlock) {
++ theBlock->softDeletions++;
++ dev->nFreeChunks++;
++ }
++}
++
++/* SoftDeleteWorker scans backwards through the tnode tree and soft deletes all the chunks in the file.
++ * All soft deleting does is increment the block's softdelete count and pulls the chunk out
++ * of the tnode.
++ * Thus, essentially this is the same as DeleteWorker except that the chunks are soft deleted.
++ */
++
++static int yaffs_SoftDeleteWorker(yaffs_Object * in, yaffs_Tnode * tn,
++ __u32 level, int chunkOffset)
++{
++ int i;
++ int theChunk;
++ int allDone = 1;
++ yaffs_Device *dev = in->myDev;
++
++ if (tn) {
++ if (level > 0) {
++
++ for (i = YAFFS_NTNODES_INTERNAL - 1; allDone && i >= 0;
++ i--) {
++ if (tn->internal[i]) {
++ allDone =
++ yaffs_SoftDeleteWorker(in,
++ tn->
++ internal[i],
++ level - 1,
++ (chunkOffset
++ <<
++ YAFFS_TNODES_INTERNAL_BITS)
++ + i);
++ if (allDone) {
++ yaffs_FreeTnode(dev,
++ tn->
++ internal[i]);
++ tn->internal[i] = NULL;
++ } else {
++ /* Hoosterman... how could this happen? */
++ }
++ }
++ }
++ return (allDone) ? 1 : 0;
++ } else if (level == 0) {
++
++ for (i = YAFFS_NTNODES_LEVEL0 - 1; i >= 0; i--) {
++ theChunk = yaffs_GetChunkGroupBase(dev,tn,i);
++ if (theChunk) {
++ /* Note this does not find the real chunk, only the chunk group.
++ * We make an assumption that a chunk group is not larger than
++ * a block.
++ */
++ yaffs_SoftDeleteChunk(dev, theChunk);
++ yaffs_PutLevel0Tnode(dev,tn,i,0);
++ }
++
++ }
++ return 1;
++
++ }
++
++ }
++
++ return 1;
++
++}
++
++static void yaffs_SoftDeleteFile(yaffs_Object * obj)
++{
++ if (obj->deleted &&
++ obj->variantType == YAFFS_OBJECT_TYPE_FILE && !obj->softDeleted) {
++ if (obj->nDataChunks <= 0) {
++ /* Empty file with no duplicate object headers, just delete it immediately */
++ yaffs_FreeTnode(obj->myDev,
++ obj->variant.fileVariant.top);
++ obj->variant.fileVariant.top = NULL;
++ T(YAFFS_TRACE_TRACING,
++ (TSTR("yaffs: Deleting empty file %d" TENDSTR),
++ obj->objectId));
++ yaffs_DoGenericObjectDeletion(obj);
++ } else {
++ yaffs_SoftDeleteWorker(obj,
++ obj->variant.fileVariant.top,
++ obj->variant.fileVariant.
++ topLevel, 0);
++ obj->softDeleted = 1;
++ }
++ }
++}
++
++/* Pruning removes any part of the file structure tree that is beyond the
++ * bounds of the file (ie that does not point to chunks).
++ *
++ * A file should only get pruned when its size is reduced.
++ *
++ * Before pruning, the chunks must be pulled from the tree and the
++ * level 0 tnode entries must be zeroed out.
++ * Could also use this for file deletion, but that's probably better handled
++ * by a special case.
++ */
++
++static yaffs_Tnode *yaffs_PruneWorker(yaffs_Device * dev, yaffs_Tnode * tn,
++ __u32 level, int del0)
++{
++ int i;
++ int hasData;
++
++ if (tn) {
++ hasData = 0;
++
++ for (i = 0; i < YAFFS_NTNODES_INTERNAL; i++) {
++ if (tn->internal[i] && level > 0) {
++ tn->internal[i] =
++ yaffs_PruneWorker(dev, tn->internal[i],
++ level - 1,
++ (i == 0) ? del0 : 1);
++ }
++
++ if (tn->internal[i]) {
++ hasData++;
++ }
++ }
++
++ if (hasData == 0 && del0) {
++ /* Free and return NULL */
++
++ yaffs_FreeTnode(dev, tn);
++ tn = NULL;
++ }
++
++ }
++
++ return tn;
++
++}
++
++static int yaffs_PruneFileStructure(yaffs_Device * dev,
++ yaffs_FileStructure * fStruct)
++{
++ int i;
++ int hasData;
++ int done = 0;
++ yaffs_Tnode *tn;
++
++ if (fStruct->topLevel > 0) {
++ fStruct->top =
++ yaffs_PruneWorker(dev, fStruct->top, fStruct->topLevel, 0);
++
++ /* Now we have a tree with all the non-zero branches NULL but the height
++ * is the same as it was.
++ * Let's see if we can trim internal tnodes to shorten the tree.
++ * We can do this if only the 0th element in the tnode is in use
++ * (ie all the non-zero are NULL)
++ */
++
++ while (fStruct->topLevel && !done) {
++ tn = fStruct->top;
++
++ hasData = 0;
++ for (i = 1; i < YAFFS_NTNODES_INTERNAL; i++) {
++ if (tn->internal[i]) {
++ hasData++;
++ }
++ }
++
++ if (!hasData) {
++ fStruct->top = tn->internal[0];
++ fStruct->topLevel--;
++ yaffs_FreeTnode(dev, tn);
++ } else {
++ done = 1;
++ }
++ }
++ }
++
++ return YAFFS_OK;
++}
++
++/*-------------------- End of File Structure functions.-------------------*/
++
++/* yaffs_CreateFreeObjects creates a bunch more objects and
++ * adds them to the object free list.
++ */
++static int yaffs_CreateFreeObjects(yaffs_Device * dev, int nObjects)
++{
++ int i;
++ yaffs_Object *newObjects;
++ yaffs_ObjectList *list;
++
++ if (nObjects < 1)
++ return YAFFS_OK;
++
++ /* make these things */
++ newObjects = YMALLOC(nObjects * sizeof(yaffs_Object));
++ list = YMALLOC(sizeof(yaffs_ObjectList));
++
++ if (!newObjects || !list) {
++ if(newObjects)
++ YFREE(newObjects);
++ if(list)
++ YFREE(list);
++ T(YAFFS_TRACE_ALLOCATE,
++ (TSTR("yaffs: Could not allocate more objects" TENDSTR)));
++ return YAFFS_FAIL;
++ }
++
++ /* Hook them into the free list */
++ for (i = 0; i < nObjects - 1; i++) {
++ newObjects[i].siblings.next =
++ (struct list_head *)(&newObjects[i + 1]);
++ }
++
++ newObjects[nObjects - 1].siblings.next = (void *)dev->freeObjects;
++ dev->freeObjects = newObjects;
++ dev->nFreeObjects += nObjects;
++ dev->nObjectsCreated += nObjects;
++
++ /* Now add this bunch of Objects to a list for freeing up. */
++
++ list->objects = newObjects;
++ list->next = dev->allocatedObjectList;
++ dev->allocatedObjectList = list;
++
++ return YAFFS_OK;
++}
++
++
++/* AllocateEmptyObject gets us a clean Object. Tries to make allocate more if we run out */
++static yaffs_Object *yaffs_AllocateEmptyObject(yaffs_Device * dev)
++{
++ yaffs_Object *tn = NULL;
++
++ /* If there are none left make more */
++ if (!dev->freeObjects) {
++ yaffs_CreateFreeObjects(dev, YAFFS_ALLOCATION_NOBJECTS);
++ }
++
++ if (dev->freeObjects) {
++ tn = dev->freeObjects;
++ dev->freeObjects =
++ (yaffs_Object *) (dev->freeObjects->siblings.next);
++ dev->nFreeObjects--;
++
++ /* Now sweeten it up... */
++
++ memset(tn, 0, sizeof(yaffs_Object));
++ tn->myDev = dev;
++ tn->chunkId = -1;
++ tn->variantType = YAFFS_OBJECT_TYPE_UNKNOWN;
++ INIT_LIST_HEAD(&(tn->hardLinks));
++ INIT_LIST_HEAD(&(tn->hashLink));
++ INIT_LIST_HEAD(&tn->siblings);
++
++ /* Add it to the lost and found directory.
++ * NB Can't put root or lostNFound in lostNFound so
++ * check if lostNFound exists first
++ */
++ if (dev->lostNFoundDir) {
++ yaffs_AddObjectToDirectory(dev->lostNFoundDir, tn);
++ }
++ }
++
++ return tn;
++}
++
++static yaffs_Object *yaffs_CreateFakeDirectory(yaffs_Device * dev, int number,
++ __u32 mode)
++{
++
++ yaffs_Object *obj =
++ yaffs_CreateNewObject(dev, number, YAFFS_OBJECT_TYPE_DIRECTORY);
++ if (obj) {
++ obj->fake = 1; /* it is fake so it has no NAND presence... */
++ obj->renameAllowed = 0; /* ... and we're not allowed to rename it... */
++ obj->unlinkAllowed = 0; /* ... or unlink it */
++ obj->deleted = 0;
++ obj->unlinked = 0;
++ obj->yst_mode = mode;
++ obj->myDev = dev;
++ obj->chunkId = 0; /* Not a valid chunk. */
++ }
++
++ return obj;
++
++}
++
++static void yaffs_UnhashObject(yaffs_Object * tn)
++{
++ int bucket;
++ yaffs_Device *dev = tn->myDev;
++
++ /* If it is still linked into the bucket list, free from the list */
++ if (!list_empty(&tn->hashLink)) {
++ list_del_init(&tn->hashLink);
++ bucket = yaffs_HashFunction(tn->objectId);
++ dev->objectBucket[bucket].count--;
++ }
++
++}
++
++/* FreeObject frees up a Object and puts it back on the free list */
++static void yaffs_FreeObject(yaffs_Object * tn)
++{
++
++ yaffs_Device *dev = tn->myDev;
++
++#ifdef __KERNEL__
++ if (tn->myInode) {
++ /* We're still hooked up to a cached inode.
++ * Don't delete now, but mark for later deletion
++ */
++ tn->deferedFree = 1;
++ return;
++ }
++#endif
++
++ yaffs_UnhashObject(tn);
++
++ /* Link into the free list. */
++ tn->siblings.next = (struct list_head *)(dev->freeObjects);
++ dev->freeObjects = tn;
++ dev->nFreeObjects++;
++}
++
++#ifdef __KERNEL__
++
++void yaffs_HandleDeferedFree(yaffs_Object * obj)
++{
++ if (obj->deferedFree) {
++ yaffs_FreeObject(obj);
++ }
++}
++
++#endif
++
++static void yaffs_DeinitialiseObjects(yaffs_Device * dev)
++{
++ /* Free the list of allocated Objects */
++
++ yaffs_ObjectList *tmp;
++
++ while (dev->allocatedObjectList) {
++ tmp = dev->allocatedObjectList->next;
++ YFREE(dev->allocatedObjectList->objects);
++ YFREE(dev->allocatedObjectList);
++
++ dev->allocatedObjectList = tmp;
++ }
++
++ dev->freeObjects = NULL;
++ dev->nFreeObjects = 0;
++}
++
++static void yaffs_InitialiseObjects(yaffs_Device * dev)
++{
++ int i;
++
++ dev->allocatedObjectList = NULL;
++ dev->freeObjects = NULL;
++ dev->nFreeObjects = 0;
++
++ for (i = 0; i < YAFFS_NOBJECT_BUCKETS; i++) {
++ INIT_LIST_HEAD(&dev->objectBucket[i].list);
++ dev->objectBucket[i].count = 0;
++ }
++
++}
++
++static int yaffs_FindNiceObjectBucket(yaffs_Device * dev)
++{
++ static int x = 0;
++ int i;
++ int l = 999;
++ int lowest = 999999;
++
++ /* First let's see if we can find one that's empty. */
++
++ for (i = 0; i < 10 && lowest > 0; i++) {
++ x++;
++ x %= YAFFS_NOBJECT_BUCKETS;
++ if (dev->objectBucket[x].count < lowest) {
++ lowest = dev->objectBucket[x].count;
++ l = x;
++ }
++
++ }
++
++ /* If we didn't find an empty list, then try
++ * looking a bit further for a short one
++ */
++
++ for (i = 0; i < 10 && lowest > 3; i++) {
++ x++;
++ x %= YAFFS_NOBJECT_BUCKETS;
++ if (dev->objectBucket[x].count < lowest) {
++ lowest = dev->objectBucket[x].count;
++ l = x;
++ }
++
++ }
++
++ return l;
++}
++
++static int yaffs_CreateNewObjectNumber(yaffs_Device * dev)
++{
++ int bucket = yaffs_FindNiceObjectBucket(dev);
++
++ /* Now find an object value that has not already been taken
++ * by scanning the list.
++ */
++
++ int found = 0;
++ struct list_head *i;
++
++ __u32 n = (__u32) bucket;
++
++ /* yaffs_CheckObjectHashSanity(); */
++
++ while (!found) {
++ found = 1;
++ n += YAFFS_NOBJECT_BUCKETS;
++ if (1 || dev->objectBucket[bucket].count > 0) {
++ list_for_each(i, &dev->objectBucket[bucket].list) {
++ /* If there is already one in the list */
++ if (i
++ && list_entry(i, yaffs_Object,
++ hashLink)->objectId == n) {
++ found = 0;
++ }
++ }
++ }
++ }
++
++
++ return n;
++}
++
++static void yaffs_HashObject(yaffs_Object * in)
++{
++ int bucket = yaffs_HashFunction(in->objectId);
++ yaffs_Device *dev = in->myDev;
++
++ list_add(&in->hashLink, &dev->objectBucket[bucket].list);
++ dev->objectBucket[bucket].count++;
++
++}
++
++yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number)
++{
++ int bucket = yaffs_HashFunction(number);
++ struct list_head *i;
++ yaffs_Object *in;
++
++ list_for_each(i, &dev->objectBucket[bucket].list) {
++ /* Look if it is in the list */
++ if (i) {
++ in = list_entry(i, yaffs_Object, hashLink);
++ if (in->objectId == number) {
++#ifdef __KERNEL__
++ /* Don't tell the VFS about this one if it is defered free */
++ if (in->deferedFree)
++ return NULL;
++#endif
++
++ return in;
++ }
++ }
++ }
++
++ return NULL;
++}
++
++yaffs_Object *yaffs_CreateNewObject(yaffs_Device * dev, int number,
++ yaffs_ObjectType type)
++{
++
++ yaffs_Object *theObject;
++ yaffs_Tnode *tn;
++
++ if (number < 0) {
++ number = yaffs_CreateNewObjectNumber(dev);
++ }
++
++ theObject = yaffs_AllocateEmptyObject(dev);
++ if(!theObject)
++ return NULL;
++
++ if(type == YAFFS_OBJECT_TYPE_FILE){
++ tn = yaffs_GetTnode(dev);
++ if(!tn){
++ yaffs_FreeObject(theObject);
++ return NULL;
++ }
++ }
++
++
++
++ if (theObject) {
++ theObject->fake = 0;
++ theObject->renameAllowed = 1;
++ theObject->unlinkAllowed = 1;
++ theObject->objectId = number;
++ yaffs_HashObject(theObject);
++ theObject->variantType = type;
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_WinFileTimeNow(theObject->win_atime);
++ theObject->win_ctime[0] = theObject->win_mtime[0] =
++ theObject->win_atime[0];
++ theObject->win_ctime[1] = theObject->win_mtime[1] =
++ theObject->win_atime[1];
++
++#else
++
++ theObject->yst_atime = theObject->yst_mtime =
++ theObject->yst_ctime = Y_CURRENT_TIME;
++#endif
++ switch (type) {
++ case YAFFS_OBJECT_TYPE_FILE:
++ theObject->variant.fileVariant.fileSize = 0;
++ theObject->variant.fileVariant.scannedFileSize = 0;
++ theObject->variant.fileVariant.shrinkSize = 0xFFFFFFFF; /* max __u32 */
++ theObject->variant.fileVariant.topLevel = 0;
++ theObject->variant.fileVariant.top = tn;
++ break;
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
++ INIT_LIST_HEAD(&theObject->variant.directoryVariant.
++ children);
++ break;
++ case YAFFS_OBJECT_TYPE_SYMLINK:
++ case YAFFS_OBJECT_TYPE_HARDLINK:
++ case YAFFS_OBJECT_TYPE_SPECIAL:
++ /* No action required */
++ break;
++ case YAFFS_OBJECT_TYPE_UNKNOWN:
++ /* todo this should not happen */
++ break;
++ }
++ }
++
++ return theObject;
++}
++
++static yaffs_Object *yaffs_FindOrCreateObjectByNumber(yaffs_Device * dev,
++ int number,
++ yaffs_ObjectType type)
++{
++ yaffs_Object *theObject = NULL;
++
++ if (number > 0) {
++ theObject = yaffs_FindObjectByNumber(dev, number);
++ }
++
++ if (!theObject) {
++ theObject = yaffs_CreateNewObject(dev, number, type);
++ }
++
++ return theObject;
++
++}
++
++
++static YCHAR *yaffs_CloneString(const YCHAR * str)
++{
++ YCHAR *newStr = NULL;
++
++ if (str && *str) {
++ newStr = YMALLOC((yaffs_strlen(str) + 1) * sizeof(YCHAR));
++ if(newStr)
++ yaffs_strcpy(newStr, str);
++ }
++
++ return newStr;
++
++}
++
++/*
++ * Mknod (create) a new object.
++ * equivalentObject only has meaning for a hard link;
++ * aliasString only has meaning for a sumlink.
++ * rdev only has meaning for devices (a subset of special objects)
++ */
++
++static yaffs_Object *yaffs_MknodObject(yaffs_ObjectType type,
++ yaffs_Object * parent,
++ const YCHAR * name,
++ __u32 mode,
++ __u32 uid,
++ __u32 gid,
++ yaffs_Object * equivalentObject,
++ const YCHAR * aliasString, __u32 rdev)
++{
++ yaffs_Object *in;
++ YCHAR *str;
++
++ yaffs_Device *dev = parent->myDev;
++
++ /* Check if the entry exists. If it does then fail the call since we don't want a dup.*/
++ if (yaffs_FindObjectByName(parent, name)) {
++ return NULL;
++ }
++
++ in = yaffs_CreateNewObject(dev, -1, type);
++
++ if(type == YAFFS_OBJECT_TYPE_SYMLINK){
++ str = yaffs_CloneString(aliasString);
++ if(!str){
++ yaffs_FreeObject(in);
++ return NULL;
++ }
++ }
++
++
++
++ if (in) {
++ in->chunkId = -1;
++ in->valid = 1;
++ in->variantType = type;
++
++ in->yst_mode = mode;
++
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_WinFileTimeNow(in->win_atime);
++ in->win_ctime[0] = in->win_mtime[0] = in->win_atime[0];
++ in->win_ctime[1] = in->win_mtime[1] = in->win_atime[1];
++
++#else
++ in->yst_atime = in->yst_mtime = in->yst_ctime = Y_CURRENT_TIME;
++
++ in->yst_rdev = rdev;
++ in->yst_uid = uid;
++ in->yst_gid = gid;
++#endif
++ in->nDataChunks = 0;
++
++ yaffs_SetObjectName(in, name);
++ in->dirty = 1;
++
++ yaffs_AddObjectToDirectory(parent, in);
++
++ in->myDev = parent->myDev;
++
++ switch (type) {
++ case YAFFS_OBJECT_TYPE_SYMLINK:
++ in->variant.symLinkVariant.alias = str;
++ break;
++ case YAFFS_OBJECT_TYPE_HARDLINK:
++ in->variant.hardLinkVariant.equivalentObject =
++ equivalentObject;
++ in->variant.hardLinkVariant.equivalentObjectId =
++ equivalentObject->objectId;
++ list_add(&in->hardLinks, &equivalentObject->hardLinks);
++ break;
++ case YAFFS_OBJECT_TYPE_FILE:
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
++ case YAFFS_OBJECT_TYPE_SPECIAL:
++ case YAFFS_OBJECT_TYPE_UNKNOWN:
++ /* do nothing */
++ break;
++ }
++
++ if (yaffs_UpdateObjectHeader(in, name, 0, 0, 0) < 0) {
++ /* Could not create the object header, fail the creation */
++ yaffs_DestroyObject(in);
++ in = NULL;
++ }
++
++ }
++
++ return in;
++}
++
++yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name,
++ __u32 mode, __u32 uid, __u32 gid)
++{
++ return yaffs_MknodObject(YAFFS_OBJECT_TYPE_FILE, parent, name, mode,
++ uid, gid, NULL, NULL, 0);
++}
++
++yaffs_Object *yaffs_MknodDirectory(yaffs_Object * parent, const YCHAR * name,
++ __u32 mode, __u32 uid, __u32 gid)
++{
++ return yaffs_MknodObject(YAFFS_OBJECT_TYPE_DIRECTORY, parent, name,
++ mode, uid, gid, NULL, NULL, 0);
++}
++
++yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name,
++ __u32 mode, __u32 uid, __u32 gid, __u32 rdev)
++{
++ return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SPECIAL, parent, name, mode,
++ uid, gid, NULL, NULL, rdev);
++}
++
++yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name,
++ __u32 mode, __u32 uid, __u32 gid,
++ const YCHAR * alias)
++{
++ return yaffs_MknodObject(YAFFS_OBJECT_TYPE_SYMLINK, parent, name, mode,
++ uid, gid, NULL, alias, 0);
++}
++
++/* yaffs_Link returns the object id of the equivalent object.*/
++yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name,
++ yaffs_Object * equivalentObject)
++{
++ /* Get the real object in case we were fed a hard link as an equivalent object */
++ equivalentObject = yaffs_GetEquivalentObject(equivalentObject);
++
++ if (yaffs_MknodObject
++ (YAFFS_OBJECT_TYPE_HARDLINK, parent, name, 0, 0, 0,
++ equivalentObject, NULL, 0)) {
++ return equivalentObject;
++ } else {
++ return NULL;
++ }
++
++}
++
++static int yaffs_ChangeObjectName(yaffs_Object * obj, yaffs_Object * newDir,
++ const YCHAR * newName, int force, int shadows)
++{
++ int unlinkOp;
++ int deleteOp;
++
++ yaffs_Object *existingTarget;
++
++ if (newDir == NULL) {
++ newDir = obj->parent; /* use the old directory */
++ }
++
++ if (newDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("tragendy: yaffs_ChangeObjectName: newDir is not a directory"
++ TENDSTR)));
++ YBUG();
++ }
++
++ /* TODO: Do we need this different handling for YAFFS2 and YAFFS1?? */
++ if (obj->myDev->isYaffs2) {
++ unlinkOp = (newDir == obj->myDev->unlinkedDir);
++ } else {
++ unlinkOp = (newDir == obj->myDev->unlinkedDir
++ && obj->variantType == YAFFS_OBJECT_TYPE_FILE);
++ }
++
++ deleteOp = (newDir == obj->myDev->deletedDir);
++
++ existingTarget = yaffs_FindObjectByName(newDir, newName);
++
++ /* If the object is a file going into the unlinked directory,
++ * then it is OK to just stuff it in since duplicate names are allowed.
++ * else only proceed if the new name does not exist and if we're putting
++ * it into a directory.
++ */
++ if ((unlinkOp ||
++ deleteOp ||
++ force ||
++ (shadows > 0) ||
++ !existingTarget) &&
++ newDir->variantType == YAFFS_OBJECT_TYPE_DIRECTORY) {
++ yaffs_SetObjectName(obj, newName);
++ obj->dirty = 1;
++
++ yaffs_AddObjectToDirectory(newDir, obj);
++
++ if (unlinkOp)
++ obj->unlinked = 1;
++
++ /* If it is a deletion then we mark it as a shrink for gc purposes. */
++ if (yaffs_UpdateObjectHeader(obj, newName, 0, deleteOp, shadows)>= 0)
++ return YAFFS_OK;
++ }
++
++ return YAFFS_FAIL;
++}
++
++int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName,
++ yaffs_Object * newDir, const YCHAR * newName)
++{
++ yaffs_Object *obj;
++ yaffs_Object *existingTarget;
++ int force = 0;
++
++#ifdef CONFIG_YAFFS_CASE_INSENSITIVE
++ /* Special case for case insemsitive systems (eg. WinCE).
++ * While look-up is case insensitive, the name isn't.
++ * Therefore we might want to change x.txt to X.txt
++ */
++ if (oldDir == newDir && yaffs_strcmp(oldName, newName) == 0) {
++ force = 1;
++ }
++#endif
++
++ obj = yaffs_FindObjectByName(oldDir, oldName);
++ /* Check new name to long. */
++ if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK &&
++ yaffs_strlen(newName) > YAFFS_MAX_ALIAS_LENGTH)
++ /* ENAMETOOLONG */
++ return YAFFS_FAIL;
++ else if (obj->variantType != YAFFS_OBJECT_TYPE_SYMLINK &&
++ yaffs_strlen(newName) > YAFFS_MAX_NAME_LENGTH)
++ /* ENAMETOOLONG */
++ return YAFFS_FAIL;
++
++ if (obj && obj->renameAllowed) {
++
++ /* Now do the handling for an existing target, if there is one */
++
++ existingTarget = yaffs_FindObjectByName(newDir, newName);
++ if (existingTarget &&
++ existingTarget->variantType == YAFFS_OBJECT_TYPE_DIRECTORY &&
++ !list_empty(&existingTarget->variant.directoryVariant.children)) {
++ /* There is a target that is a non-empty directory, so we fail */
++ return YAFFS_FAIL; /* EEXIST or ENOTEMPTY */
++ } else if (existingTarget && existingTarget != obj) {
++ /* Nuke the target first, using shadowing,
++ * but only if it isn't the same object
++ */
++ yaffs_ChangeObjectName(obj, newDir, newName, force,
++ existingTarget->objectId);
++ yaffs_UnlinkObject(existingTarget);
++ }
++
++ return yaffs_ChangeObjectName(obj, newDir, newName, 1, 0);
++ }
++ return YAFFS_FAIL;
++}
++
++/*------------------------- Block Management and Page Allocation ----------------*/
++
++static int yaffs_InitialiseBlocks(yaffs_Device * dev)
++{
++ int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
++
++ dev->blockInfo = NULL;
++ dev->chunkBits = NULL;
++
++ dev->allocationBlock = -1; /* force it to get a new one */
++
++ /* If the first allocation strategy fails, thry the alternate one */
++ dev->blockInfo = YMALLOC(nBlocks * sizeof(yaffs_BlockInfo));
++ if(!dev->blockInfo){
++ dev->blockInfo = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockInfo));
++ dev->blockInfoAlt = 1;
++ }
++ else
++ dev->blockInfoAlt = 0;
++
++ if(dev->blockInfo){
++
++ /* Set up dynamic blockinfo stuff. */
++ dev->chunkBitmapStride = (dev->nChunksPerBlock + 7) / 8; /* round up bytes */
++ dev->chunkBits = YMALLOC(dev->chunkBitmapStride * nBlocks);
++ if(!dev->chunkBits){
++ dev->chunkBits = YMALLOC_ALT(dev->chunkBitmapStride * nBlocks);
++ dev->chunkBitsAlt = 1;
++ }
++ else
++ dev->chunkBitsAlt = 0;
++ }
++
++ if (dev->blockInfo && dev->chunkBits) {
++ memset(dev->blockInfo, 0, nBlocks * sizeof(yaffs_BlockInfo));
++ memset(dev->chunkBits, 0, dev->chunkBitmapStride * nBlocks);
++ return YAFFS_OK;
++ }
++
++ return YAFFS_FAIL;
++
++}
++
++static void yaffs_DeinitialiseBlocks(yaffs_Device * dev)
++{
++ if(dev->blockInfoAlt && dev->blockInfo)
++ YFREE_ALT(dev->blockInfo);
++ else if(dev->blockInfo)
++ YFREE(dev->blockInfo);
++
++ dev->blockInfoAlt = 0;
++
++ dev->blockInfo = NULL;
++
++ if(dev->chunkBitsAlt && dev->chunkBits)
++ YFREE_ALT(dev->chunkBits);
++ else if(dev->chunkBits)
++ YFREE(dev->chunkBits);
++ dev->chunkBitsAlt = 0;
++ dev->chunkBits = NULL;
++}
++
++static int yaffs_BlockNotDisqualifiedFromGC(yaffs_Device * dev,
++ yaffs_BlockInfo * bi)
++{
++ int i;
++ __u32 seq;
++ yaffs_BlockInfo *b;
++
++ if (!dev->isYaffs2)
++ return 1; /* disqualification only applies to yaffs2. */
++
++ if (!bi->hasShrinkHeader)
++ return 1; /* can gc */
++
++ /* Find the oldest dirty sequence number if we don't know it and save it
++ * so we don't have to keep recomputing it.
++ */
++ if (!dev->oldestDirtySequence) {
++ seq = dev->sequenceNumber;
++
++ for (i = dev->internalStartBlock; i <= dev->internalEndBlock;
++ i++) {
++ b = yaffs_GetBlockInfo(dev, i);
++ if (b->blockState == YAFFS_BLOCK_STATE_FULL &&
++ (b->pagesInUse - b->softDeletions) <
++ dev->nChunksPerBlock && b->sequenceNumber < seq) {
++ seq = b->sequenceNumber;
++ }
++ }
++ dev->oldestDirtySequence = seq;
++ }
++
++ /* Can't do gc of this block if there are any blocks older than this one that have
++ * discarded pages.
++ */
++ return (bi->sequenceNumber <= dev->oldestDirtySequence);
++
++}
++
++/* FindDiretiestBlock is used to select the dirtiest block (or close enough)
++ * for garbage collection.
++ */
++
++static int yaffs_FindBlockForGarbageCollection(yaffs_Device * dev,
++ int aggressive)
++{
++
++ int b = dev->currentDirtyChecker;
++
++ int i;
++ int iterations;
++ int dirtiest = -1;
++ int pagesInUse = 0;
++ int prioritised=0;
++ yaffs_BlockInfo *bi;
++ int pendingPrioritisedExist = 0;
++
++ /* First let's see if we need to grab a prioritised block */
++ if(dev->hasPendingPrioritisedGCs){
++ for(i = dev->internalStartBlock; i < dev->internalEndBlock && !prioritised; i++){
++
++ bi = yaffs_GetBlockInfo(dev, i);
++ //yaffs_VerifyBlock(dev,bi,i);
++
++ if(bi->gcPrioritise) {
++ pendingPrioritisedExist = 1;
++ if(bi->blockState == YAFFS_BLOCK_STATE_FULL &&
++ yaffs_BlockNotDisqualifiedFromGC(dev, bi)){
++ pagesInUse = (bi->pagesInUse - bi->softDeletions);
++ dirtiest = i;
++ prioritised = 1;
++ aggressive = 1; /* Fool the non-aggressive skip logiv below */
++ }
++ }
++ }
++
++ if(!pendingPrioritisedExist) /* None found, so we can clear this */
++ dev->hasPendingPrioritisedGCs = 0;
++ }
++
++ /* If we're doing aggressive GC then we are happy to take a less-dirty block, and
++ * search harder.
++ * else (we're doing a leasurely gc), then we only bother to do this if the
++ * block has only a few pages in use.
++ */
++
++ dev->nonAggressiveSkip--;
++
++ if (!aggressive && (dev->nonAggressiveSkip > 0)) {
++ return -1;
++ }
++
++ if(!prioritised)
++ pagesInUse =
++ (aggressive) ? dev->nChunksPerBlock : YAFFS_PASSIVE_GC_CHUNKS + 1;
++
++ if (aggressive) {
++ iterations =
++ dev->internalEndBlock - dev->internalStartBlock + 1;
++ } else {
++ iterations =
++ dev->internalEndBlock - dev->internalStartBlock + 1;
++ iterations = iterations / 16;
++ if (iterations > 200) {
++ iterations = 200;
++ }
++ }
++
++ for (i = 0; i <= iterations && pagesInUse > 0 && !prioritised; i++) {
++ b++;
++ if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
++ b = dev->internalStartBlock;
++ }
++
++ if (b < dev->internalStartBlock || b > dev->internalEndBlock) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("**>> Block %d is not valid" TENDSTR), b));
++ YBUG();
++ }
++
++ bi = yaffs_GetBlockInfo(dev, b);
++
++#if 0
++ if (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT) {
++ dirtiest = b;
++ pagesInUse = 0;
++ }
++ else
++#endif
++
++ if (bi->blockState == YAFFS_BLOCK_STATE_FULL &&
++ (bi->pagesInUse - bi->softDeletions) < pagesInUse &&
++ yaffs_BlockNotDisqualifiedFromGC(dev, bi)) {
++ dirtiest = b;
++ pagesInUse = (bi->pagesInUse - bi->softDeletions);
++ }
++ }
++
++ dev->currentDirtyChecker = b;
++
++ if (dirtiest > 0) {
++ T(YAFFS_TRACE_GC,
++ (TSTR("GC Selected block %d with %d free, prioritised:%d" TENDSTR), dirtiest,
++ dev->nChunksPerBlock - pagesInUse,prioritised));
++ }
++
++ dev->oldestDirtySequence = 0;
++
++ if (dirtiest > 0) {
++ dev->nonAggressiveSkip = 4;
++ }
++
++ return dirtiest;
++}
++
++static void yaffs_BlockBecameDirty(yaffs_Device * dev, int blockNo)
++{
++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, blockNo);
++
++ int erasedOk = 0;
++
++ /* If the block is still healthy erase it and mark as clean.
++ * If the block has had a data failure, then retire it.
++ */
++
++ T(YAFFS_TRACE_GC | YAFFS_TRACE_ERASE,
++ (TSTR("yaffs_BlockBecameDirty block %d state %d %s"TENDSTR),
++ blockNo, bi->blockState, (bi->needsRetiring) ? "needs retiring" : ""));
++
++ bi->blockState = YAFFS_BLOCK_STATE_DIRTY;
++
++ if (!bi->needsRetiring) {
++ yaffs_InvalidateCheckpoint(dev);
++ erasedOk = yaffs_EraseBlockInNAND(dev, blockNo);
++ if (!erasedOk) {
++ dev->nErasureFailures++;
++ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
++ (TSTR("**>> Erasure failed %d" TENDSTR), blockNo));
++ }
++ }
++
++ if (erasedOk &&
++ ((yaffs_traceMask & YAFFS_TRACE_ERASE) || !yaffs_SkipVerification(dev))) {
++ int i;
++ for (i = 0; i < dev->nChunksPerBlock; i++) {
++ if (!yaffs_CheckChunkErased
++ (dev, blockNo * dev->nChunksPerBlock + i)) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ (">>Block %d erasure supposedly OK, but chunk %d not erased"
++ TENDSTR), blockNo, i));
++ }
++ }
++ }
++
++ if (erasedOk) {
++ /* Clean it up... */
++ bi->blockState = YAFFS_BLOCK_STATE_EMPTY;
++ dev->nErasedBlocks++;
++ bi->pagesInUse = 0;
++ bi->softDeletions = 0;
++ bi->hasShrinkHeader = 0;
++ bi->skipErasedCheck = 1; /* This is clean, so no need to check */
++ bi->gcPrioritise = 0;
++ yaffs_ClearChunkBits(dev, blockNo);
++
++ T(YAFFS_TRACE_ERASE,
++ (TSTR("Erased block %d" TENDSTR), blockNo));
++ } else {
++ dev->nFreeChunks -= dev->nChunksPerBlock; /* We lost a block of free space */
++
++ yaffs_RetireBlock(dev, blockNo);
++ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
++ (TSTR("**>> Block %d retired" TENDSTR), blockNo));
++ }
++}
++
++static int yaffs_FindBlockForAllocation(yaffs_Device * dev)
++{
++ int i;
++
++ yaffs_BlockInfo *bi;
++
++ if (dev->nErasedBlocks < 1) {
++ /* Hoosterman we've got a problem.
++ * Can't get space to gc
++ */
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("yaffs tragedy: no more eraased blocks" TENDSTR)));
++
++ return -1;
++ }
++
++ /* Find an empty block. */
++
++ for (i = dev->internalStartBlock; i <= dev->internalEndBlock; i++) {
++ dev->allocationBlockFinder++;
++ if (dev->allocationBlockFinder < dev->internalStartBlock
++ || dev->allocationBlockFinder > dev->internalEndBlock) {
++ dev->allocationBlockFinder = dev->internalStartBlock;
++ }
++
++ bi = yaffs_GetBlockInfo(dev, dev->allocationBlockFinder);
++
++ if (bi->blockState == YAFFS_BLOCK_STATE_EMPTY) {
++ bi->blockState = YAFFS_BLOCK_STATE_ALLOCATING;
++ dev->sequenceNumber++;
++ bi->sequenceNumber = dev->sequenceNumber;
++ dev->nErasedBlocks--;
++ T(YAFFS_TRACE_ALLOCATE,
++ (TSTR("Allocated block %d, seq %d, %d left" TENDSTR),
++ dev->allocationBlockFinder, dev->sequenceNumber,
++ dev->nErasedBlocks));
++ return dev->allocationBlockFinder;
++ }
++ }
++
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("yaffs tragedy: no more eraased blocks, but there should have been %d"
++ TENDSTR), dev->nErasedBlocks));
++
++ return -1;
++}
++
++
++// Check if there's space to allocate...
++// Thinks.... do we need top make this ths same as yaffs_GetFreeChunks()?
++static int yaffs_CheckSpaceForAllocation(yaffs_Device * dev)
++{
++ int reservedChunks;
++ int reservedBlocks = dev->nReservedBlocks;
++ int checkpointBlocks;
++
++ checkpointBlocks = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
++ if(checkpointBlocks < 0)
++ checkpointBlocks = 0;
++
++ reservedChunks = ((reservedBlocks + checkpointBlocks) * dev->nChunksPerBlock);
++
++ return (dev->nFreeChunks > reservedChunks);
++}
++
++static int yaffs_AllocateChunk(yaffs_Device * dev, int useReserve, yaffs_BlockInfo **blockUsedPtr)
++{
++ int retVal;
++ yaffs_BlockInfo *bi;
++
++ if (dev->allocationBlock < 0) {
++ /* Get next block to allocate off */
++ dev->allocationBlock = yaffs_FindBlockForAllocation(dev);
++ dev->allocationPage = 0;
++ }
++
++ if (!useReserve && !yaffs_CheckSpaceForAllocation(dev)) {
++ /* Not enough space to allocate unless we're allowed to use the reserve. */
++ return -1;
++ }
++
++ if (dev->nErasedBlocks < dev->nReservedBlocks
++ && dev->allocationPage == 0) {
++ T(YAFFS_TRACE_ALLOCATE, (TSTR("Allocating reserve" TENDSTR)));
++ }
++
++ /* Next page please.... */
++ if (dev->allocationBlock >= 0) {
++ bi = yaffs_GetBlockInfo(dev, dev->allocationBlock);
++
++ retVal = (dev->allocationBlock * dev->nChunksPerBlock) +
++ dev->allocationPage;
++ bi->pagesInUse++;
++ yaffs_SetChunkBit(dev, dev->allocationBlock,
++ dev->allocationPage);
++
++ dev->allocationPage++;
++
++ dev->nFreeChunks--;
++
++ /* If the block is full set the state to full */
++ if (dev->allocationPage >= dev->nChunksPerBlock) {
++ bi->blockState = YAFFS_BLOCK_STATE_FULL;
++ dev->allocationBlock = -1;
++ }
++
++ if(blockUsedPtr)
++ *blockUsedPtr = bi;
++
++ return retVal;
++ }
++
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("!!!!!!!!! Allocator out !!!!!!!!!!!!!!!!!" TENDSTR)));
++
++ return -1;
++}
++
++static int yaffs_GetErasedChunks(yaffs_Device * dev)
++{
++ int n;
++
++ n = dev->nErasedBlocks * dev->nChunksPerBlock;
++
++ if (dev->allocationBlock > 0) {
++ n += (dev->nChunksPerBlock - dev->allocationPage);
++ }
++
++ return n;
++
++}
++
++static int yaffs_GarbageCollectBlock(yaffs_Device * dev, int block)
++{
++ int oldChunk;
++ int newChunk;
++ int chunkInBlock;
++ int markNAND;
++ int retVal = YAFFS_OK;
++ int cleanups = 0;
++ int i;
++ int isCheckpointBlock;
++ int matchingChunk;
++
++ int chunksBefore = yaffs_GetErasedChunks(dev);
++ int chunksAfter;
++
++ yaffs_ExtendedTags tags;
++
++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, block);
++
++ yaffs_Object *object;
++
++ isCheckpointBlock = (bi->blockState == YAFFS_BLOCK_STATE_CHECKPOINT);
++
++ bi->blockState = YAFFS_BLOCK_STATE_COLLECTING;
++
++ T(YAFFS_TRACE_TRACING,
++ (TSTR("Collecting block %d, in use %d, shrink %d, " TENDSTR), block,
++ bi->pagesInUse, bi->hasShrinkHeader));
++
++ /*yaffs_VerifyFreeChunks(dev); */
++
++ bi->hasShrinkHeader = 0; /* clear the flag so that the block can erase */
++
++ /* Take off the number of soft deleted entries because
++ * they're going to get really deleted during GC.
++ */
++ dev->nFreeChunks -= bi->softDeletions;
++
++ dev->isDoingGC = 1;
++
++ if (isCheckpointBlock ||
++ !yaffs_StillSomeChunkBits(dev, block)) {
++ T(YAFFS_TRACE_TRACING,
++ (TSTR
++ ("Collecting block %d that has no chunks in use" TENDSTR),
++ block));
++ yaffs_BlockBecameDirty(dev, block);
++ } else {
++
++ __u8 *buffer = yaffs_GetTempBuffer(dev, __LINE__);
++
++ yaffs_VerifyBlock(dev,bi,block);
++
++ for (chunkInBlock = 0, oldChunk = block * dev->nChunksPerBlock;
++ chunkInBlock < dev->nChunksPerBlock
++ && yaffs_StillSomeChunkBits(dev, block);
++ chunkInBlock++, oldChunk++) {
++ if (yaffs_CheckChunkBit(dev, block, chunkInBlock)) {
++
++ /* This page is in use and might need to be copied off */
++
++ markNAND = 1;
++
++ yaffs_InitialiseTags(&tags);
++
++ yaffs_ReadChunkWithTagsFromNAND(dev, oldChunk,
++ buffer, &tags);
++
++ object =
++ yaffs_FindObjectByNumber(dev,
++ tags.objectId);
++
++ T(YAFFS_TRACE_GC_DETAIL,
++ (TSTR
++ ("Collecting page %d, %d %d %d " TENDSTR),
++ chunkInBlock, tags.objectId, tags.chunkId,
++ tags.byteCount));
++
++ if(object && !yaffs_SkipVerification(dev)){
++ if(tags.chunkId == 0)
++ matchingChunk = object->chunkId;
++ else if(object->softDeleted)
++ matchingChunk = oldChunk; /* Defeat the test */
++ else
++ matchingChunk = yaffs_FindChunkInFile(object,tags.chunkId,NULL);
++
++ if(oldChunk != matchingChunk)
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("gc: page in gc mismatch: %d %d %d %d"TENDSTR),
++ oldChunk,matchingChunk,tags.objectId, tags.chunkId));
++
++ }
++
++ if (!object) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("page %d in gc has no object: %d %d %d "
++ TENDSTR), oldChunk,
++ tags.objectId, tags.chunkId, tags.byteCount));
++ }
++
++ if (object && object->deleted
++ && tags.chunkId != 0) {
++ /* Data chunk in a deleted file, throw it away
++ * It's a soft deleted data chunk,
++ * No need to copy this, just forget about it and
++ * fix up the object.
++ */
++
++ object->nDataChunks--;
++
++ if (object->nDataChunks <= 0) {
++ /* remeber to clean up the object */
++ dev->gcCleanupList[cleanups] =
++ tags.objectId;
++ cleanups++;
++ }
++ markNAND = 0;
++ } else if (0
++ /* Todo object && object->deleted && object->nDataChunks == 0 */
++ ) {
++ /* Deleted object header with no data chunks.
++ * Can be discarded and the file deleted.
++ */
++ object->chunkId = 0;
++ yaffs_FreeTnode(object->myDev,
++ object->variant.
++ fileVariant.top);
++ object->variant.fileVariant.top = NULL;
++ yaffs_DoGenericObjectDeletion(object);
++
++ } else if (object) {
++ /* It's either a data chunk in a live file or
++ * an ObjectHeader, so we're interested in it.
++ * NB Need to keep the ObjectHeaders of deleted files
++ * until the whole file has been deleted off
++ */
++ tags.serialNumber++;
++
++ dev->nGCCopies++;
++
++ if (tags.chunkId == 0) {
++ /* It is an object Id,
++ * We need to nuke the shrinkheader flags first
++ * We no longer want the shrinkHeader flag since its work is done
++ * and if it is left in place it will mess up scanning.
++ * Also, clear out any shadowing stuff
++ */
++
++ yaffs_ObjectHeader *oh;
++ oh = (yaffs_ObjectHeader *)buffer;
++ oh->isShrink = 0;
++ oh->shadowsObject = -1;
++ tags.extraShadows = 0;
++ tags.extraIsShrinkHeader = 0;
++
++ yaffs_VerifyObjectHeader(object,oh,&tags,1);
++ }
++
++ newChunk =
++ yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &tags, 1);
++
++ if (newChunk < 0) {
++ retVal = YAFFS_FAIL;
++ } else {
++
++ /* Ok, now fix up the Tnodes etc. */
++
++ if (tags.chunkId == 0) {
++ /* It's a header */
++ object->chunkId = newChunk;
++ object->serial = tags.serialNumber;
++ } else {
++ /* It's a data chunk */
++ yaffs_PutChunkIntoFile
++ (object,
++ tags.chunkId,
++ newChunk, 0);
++ }
++ }
++ }
++
++ yaffs_DeleteChunk(dev, oldChunk, markNAND, __LINE__);
++
++ }
++ }
++
++ yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
++
++
++ /* Do any required cleanups */
++ for (i = 0; i < cleanups; i++) {
++ /* Time to delete the file too */
++ object =
++ yaffs_FindObjectByNumber(dev,
++ dev->gcCleanupList[i]);
++ if (object) {
++ yaffs_FreeTnode(dev,
++ object->variant.fileVariant.
++ top);
++ object->variant.fileVariant.top = NULL;
++ T(YAFFS_TRACE_GC,
++ (TSTR
++ ("yaffs: About to finally delete object %d"
++ TENDSTR), object->objectId));
++ yaffs_DoGenericObjectDeletion(object);
++ object->myDev->nDeletedFiles--;
++ }
++
++ }
++
++ }
++
++ yaffs_VerifyCollectedBlock(dev,bi,block);
++
++ if (chunksBefore >= (chunksAfter = yaffs_GetErasedChunks(dev))) {
++ T(YAFFS_TRACE_GC,
++ (TSTR
++ ("gc did not increase free chunks before %d after %d"
++ TENDSTR), chunksBefore, chunksAfter));
++ }
++
++ dev->isDoingGC = 0;
++
++ return YAFFS_OK;
++}
++
++/* New garbage collector
++ * If we're very low on erased blocks then we do aggressive garbage collection
++ * otherwise we do "leasurely" garbage collection.
++ * Aggressive gc looks further (whole array) and will accept less dirty blocks.
++ * Passive gc only inspects smaller areas and will only accept more dirty blocks.
++ *
++ * The idea is to help clear out space in a more spread-out manner.
++ * Dunno if it really does anything useful.
++ */
++static int yaffs_CheckGarbageCollection(yaffs_Device * dev)
++{
++ int block;
++ int aggressive;
++ int gcOk = YAFFS_OK;
++ int maxTries = 0;
++
++ int checkpointBlockAdjust;
++
++ if (dev->isDoingGC) {
++ /* Bail out so we don't get recursive gc */
++ return YAFFS_OK;
++ }
++
++ /* This loop should pass the first time.
++ * We'll only see looping here if the erase of the collected block fails.
++ */
++
++ do {
++ maxTries++;
++
++ checkpointBlockAdjust = (dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint);
++ if(checkpointBlockAdjust < 0)
++ checkpointBlockAdjust = 0;
++
++ if (dev->nErasedBlocks < (dev->nReservedBlocks + checkpointBlockAdjust + 2)) {
++ /* We need a block soon...*/
++ aggressive = 1;
++ } else {
++ /* We're in no hurry */
++ aggressive = 0;
++ }
++
++ block = yaffs_FindBlockForGarbageCollection(dev, aggressive);
++
++ if (block > 0) {
++ dev->garbageCollections++;
++ if (!aggressive) {
++ dev->passiveGarbageCollections++;
++ }
++
++ T(YAFFS_TRACE_GC,
++ (TSTR
++ ("yaffs: GC erasedBlocks %d aggressive %d" TENDSTR),
++ dev->nErasedBlocks, aggressive));
++
++ gcOk = yaffs_GarbageCollectBlock(dev, block);
++ }
++
++ if (dev->nErasedBlocks < (dev->nReservedBlocks) && block > 0) {
++ T(YAFFS_TRACE_GC,
++ (TSTR
++ ("yaffs: GC !!!no reclaim!!! erasedBlocks %d after try %d block %d"
++ TENDSTR), dev->nErasedBlocks, maxTries, block));
++ }
++ } while ((dev->nErasedBlocks < dev->nReservedBlocks) && (block > 0)
++ && (maxTries < 2));
++
++ return aggressive ? gcOk : YAFFS_OK;
++}
++
++/*------------------------- TAGS --------------------------------*/
++
++static int yaffs_TagsMatch(const yaffs_ExtendedTags * tags, int objectId,
++ int chunkInObject)
++{
++ return (tags->chunkId == chunkInObject &&
++ tags->objectId == objectId && !tags->chunkDeleted) ? 1 : 0;
++
++}
++
++
++/*-------------------- Data file manipulation -----------------*/
++
++static int yaffs_FindChunkInFile(yaffs_Object * in, int chunkInInode,
++ yaffs_ExtendedTags * tags)
++{
++ /*Get the Tnode, then get the level 0 offset chunk offset */
++ yaffs_Tnode *tn;
++ int theChunk = -1;
++ yaffs_ExtendedTags localTags;
++ int retVal = -1;
++
++ yaffs_Device *dev = in->myDev;
++
++ if (!tags) {
++ /* Passed a NULL, so use our own tags space */
++ tags = &localTags;
++ }
++
++ tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode);
++
++ if (tn) {
++ theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
++
++ retVal =
++ yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
++ chunkInInode);
++ }
++ return retVal;
++}
++
++static int yaffs_FindAndDeleteChunkInFile(yaffs_Object * in, int chunkInInode,
++ yaffs_ExtendedTags * tags)
++{
++ /* Get the Tnode, then get the level 0 offset chunk offset */
++ yaffs_Tnode *tn;
++ int theChunk = -1;
++ yaffs_ExtendedTags localTags;
++
++ yaffs_Device *dev = in->myDev;
++ int retVal = -1;
++
++ if (!tags) {
++ /* Passed a NULL, so use our own tags space */
++ tags = &localTags;
++ }
++
++ tn = yaffs_FindLevel0Tnode(dev, &in->variant.fileVariant, chunkInInode);
++
++ if (tn) {
++
++ theChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
++
++ retVal =
++ yaffs_FindChunkInGroup(dev, theChunk, tags, in->objectId,
++ chunkInInode);
++
++ /* Delete the entry in the filestructure (if found) */
++ if (retVal != -1) {
++ yaffs_PutLevel0Tnode(dev,tn,chunkInInode,0);
++ }
++ } else {
++ /*T(("No level 0 found for %d\n", chunkInInode)); */
++ }
++
++ if (retVal == -1) {
++ /* T(("Could not find %d to delete\n",chunkInInode)); */
++ }
++ return retVal;
++}
++
++#ifdef YAFFS_PARANOID
++
++static int yaffs_CheckFileSanity(yaffs_Object * in)
++{
++ int chunk;
++ int nChunks;
++ int fSize;
++ int failed = 0;
++ int objId;
++ yaffs_Tnode *tn;
++ yaffs_Tags localTags;
++ yaffs_Tags *tags = &localTags;
++ int theChunk;
++ int chunkDeleted;
++
++ if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
++ /* T(("Object not a file\n")); */
++ return YAFFS_FAIL;
++ }
++
++ objId = in->objectId;
++ fSize = in->variant.fileVariant.fileSize;
++ nChunks =
++ (fSize + in->myDev->nDataBytesPerChunk - 1) / in->myDev->nDataBytesPerChunk;
++
++ for (chunk = 1; chunk <= nChunks; chunk++) {
++ tn = yaffs_FindLevel0Tnode(in->myDev, &in->variant.fileVariant,
++ chunk);
++
++ if (tn) {
++
++ theChunk = yaffs_GetChunkGroupBase(dev,tn,chunk);
++
++ if (yaffs_CheckChunkBits
++ (dev, theChunk / dev->nChunksPerBlock,
++ theChunk % dev->nChunksPerBlock)) {
++
++ yaffs_ReadChunkTagsFromNAND(in->myDev, theChunk,
++ tags,
++ &chunkDeleted);
++ if (yaffs_TagsMatch
++ (tags, in->objectId, chunk, chunkDeleted)) {
++ /* found it; */
++
++ }
++ } else {
++
++ failed = 1;
++ }
++
++ } else {
++ /* T(("No level 0 found for %d\n", chunk)); */
++ }
++ }
++
++ return failed ? YAFFS_FAIL : YAFFS_OK;
++}
++
++#endif
++
++static int yaffs_PutChunkIntoFile(yaffs_Object * in, int chunkInInode,
++ int chunkInNAND, int inScan)
++{
++ /* NB inScan is zero unless scanning.
++ * For forward scanning, inScan is > 0;
++ * for backward scanning inScan is < 0
++ */
++
++ yaffs_Tnode *tn;
++ yaffs_Device *dev = in->myDev;
++ int existingChunk;
++ yaffs_ExtendedTags existingTags;
++ yaffs_ExtendedTags newTags;
++ unsigned existingSerial, newSerial;
++
++ if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
++ /* Just ignore an attempt at putting a chunk into a non-file during scanning
++ * If it is not during Scanning then something went wrong!
++ */
++ if (!inScan) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("yaffs tragedy:attempt to put data chunk into a non-file"
++ TENDSTR)));
++ YBUG();
++ }
++
++ yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
++ return YAFFS_OK;
++ }
++
++ tn = yaffs_AddOrFindLevel0Tnode(dev,
++ &in->variant.fileVariant,
++ chunkInInode,
++ NULL);
++ if (!tn) {
++ return YAFFS_FAIL;
++ }
++
++ existingChunk = yaffs_GetChunkGroupBase(dev,tn,chunkInInode);
++
++ if (inScan != 0) {
++ /* If we're scanning then we need to test for duplicates
++ * NB This does not need to be efficient since it should only ever
++ * happen when the power fails during a write, then only one
++ * chunk should ever be affected.
++ *
++ * Correction for YAFFS2: This could happen quite a lot and we need to think about efficiency! TODO
++ * Update: For backward scanning we don't need to re-read tags so this is quite cheap.
++ */
++
++ if (existingChunk != 0) {
++ /* NB Right now existing chunk will not be real chunkId if the device >= 32MB
++ * thus we have to do a FindChunkInFile to get the real chunk id.
++ *
++ * We have a duplicate now we need to decide which one to use:
++ *
++ * Backwards scanning YAFFS2: The old one is what we use, dump the new one.
++ * Forward scanning YAFFS2: The new one is what we use, dump the old one.
++ * YAFFS1: Get both sets of tags and compare serial numbers.
++ */
++
++ if (inScan > 0) {
++ /* Only do this for forward scanning */
++ yaffs_ReadChunkWithTagsFromNAND(dev,
++ chunkInNAND,
++ NULL, &newTags);
++
++ /* Do a proper find */
++ existingChunk =
++ yaffs_FindChunkInFile(in, chunkInInode,
++ &existingTags);
++ }
++
++ if (existingChunk <= 0) {
++ /*Hoosterman - how did this happen? */
++
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("yaffs tragedy: existing chunk < 0 in scan"
++ TENDSTR)));
++
++ }
++
++ /* NB The deleted flags should be false, otherwise the chunks will
++ * not be loaded during a scan
++ */
++
++ newSerial = newTags.serialNumber;
++ existingSerial = existingTags.serialNumber;
++
++ if ((inScan > 0) &&
++ (in->myDev->isYaffs2 ||
++ existingChunk <= 0 ||
++ ((existingSerial + 1) & 3) == newSerial)) {
++ /* Forward scanning.
++ * Use new
++ * Delete the old one and drop through to update the tnode
++ */
++ yaffs_DeleteChunk(dev, existingChunk, 1,
++ __LINE__);
++ } else {
++ /* Backward scanning or we want to use the existing one
++ * Use existing.
++ * Delete the new one and return early so that the tnode isn't changed
++ */
++ yaffs_DeleteChunk(dev, chunkInNAND, 1,
++ __LINE__);
++ return YAFFS_OK;
++ }
++ }
++
++ }
++
++ if (existingChunk == 0) {
++ in->nDataChunks++;
++ }
++
++ yaffs_PutLevel0Tnode(dev,tn,chunkInInode,chunkInNAND);
++
++ return YAFFS_OK;
++}
++
++static int yaffs_ReadChunkDataFromObject(yaffs_Object * in, int chunkInInode,
++ __u8 * buffer)
++{
++ int chunkInNAND = yaffs_FindChunkInFile(in, chunkInInode, NULL);
++
++ if (chunkInNAND >= 0) {
++ return yaffs_ReadChunkWithTagsFromNAND(in->myDev, chunkInNAND,
++ buffer,NULL);
++ } else {
++ T(YAFFS_TRACE_NANDACCESS,
++ (TSTR("Chunk %d not found zero instead" TENDSTR),
++ chunkInNAND));
++ /* get sane (zero) data if you read a hole */
++ memset(buffer, 0, in->myDev->nDataBytesPerChunk);
++ return 0;
++ }
++
++}
++
++void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn)
++{
++ int block;
++ int page;
++ yaffs_ExtendedTags tags;
++ yaffs_BlockInfo *bi;
++
++ if (chunkId <= 0)
++ return;
++
++
++ dev->nDeletions++;
++ block = chunkId / dev->nChunksPerBlock;
++ page = chunkId % dev->nChunksPerBlock;
++
++
++ if(!yaffs_CheckChunkBit(dev,block,page))
++ T(YAFFS_TRACE_VERIFY,
++ (TSTR("Deleting invalid chunk %d"TENDSTR),
++ chunkId));
++
++ bi = yaffs_GetBlockInfo(dev, block);
++
++ T(YAFFS_TRACE_DELETION,
++ (TSTR("line %d delete of chunk %d" TENDSTR), lyn, chunkId));
++
++ if (markNAND &&
++ bi->blockState != YAFFS_BLOCK_STATE_COLLECTING && !dev->isYaffs2) {
++
++ yaffs_InitialiseTags(&tags);
++
++ tags.chunkDeleted = 1;
++
++ yaffs_WriteChunkWithTagsToNAND(dev, chunkId, NULL, &tags);
++ yaffs_HandleUpdateChunk(dev, chunkId, &tags);
++ } else {
++ dev->nUnmarkedDeletions++;
++ }
++
++ /* Pull out of the management area.
++ * If the whole block became dirty, this will kick off an erasure.
++ */
++ if (bi->blockState == YAFFS_BLOCK_STATE_ALLOCATING ||
++ bi->blockState == YAFFS_BLOCK_STATE_FULL ||
++ bi->blockState == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
++ bi->blockState == YAFFS_BLOCK_STATE_COLLECTING) {
++ dev->nFreeChunks++;
++
++ yaffs_ClearChunkBit(dev, block, page);
++
++ bi->pagesInUse--;
++
++ if (bi->pagesInUse == 0 &&
++ !bi->hasShrinkHeader &&
++ bi->blockState != YAFFS_BLOCK_STATE_ALLOCATING &&
++ bi->blockState != YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
++ yaffs_BlockBecameDirty(dev, block);
++ }
++
++ } else {
++ /* T(("Bad news deleting chunk %d\n",chunkId)); */
++ }
++
++}
++
++static int yaffs_WriteChunkDataToObject(yaffs_Object * in, int chunkInInode,
++ const __u8 * buffer, int nBytes,
++ int useReserve)
++{
++ /* Find old chunk Need to do this to get serial number
++ * Write new one and patch into tree.
++ * Invalidate old tags.
++ */
++
++ int prevChunkId;
++ yaffs_ExtendedTags prevTags;
++
++ int newChunkId;
++ yaffs_ExtendedTags newTags;
++
++ yaffs_Device *dev = in->myDev;
++
++ yaffs_CheckGarbageCollection(dev);
++
++ /* Get the previous chunk at this location in the file if it exists */
++ prevChunkId = yaffs_FindChunkInFile(in, chunkInInode, &prevTags);
++
++ /* Set up new tags */
++ yaffs_InitialiseTags(&newTags);
++
++ newTags.chunkId = chunkInInode;
++ newTags.objectId = in->objectId;
++ newTags.serialNumber =
++ (prevChunkId >= 0) ? prevTags.serialNumber + 1 : 1;
++ newTags.byteCount = nBytes;
++
++ newChunkId =
++ yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
++ useReserve);
++
++ if (newChunkId >= 0) {
++ yaffs_PutChunkIntoFile(in, chunkInInode, newChunkId, 0);
++
++ if (prevChunkId >= 0) {
++ yaffs_DeleteChunk(dev, prevChunkId, 1, __LINE__);
++
++ }
++
++ yaffs_CheckFileSanity(in);
++ }
++ return newChunkId;
++
++}
++
++/* UpdateObjectHeader updates the header on NAND for an object.
++ * If name is not NULL, then that new name is used.
++ */
++int yaffs_UpdateObjectHeader(yaffs_Object * in, const YCHAR * name, int force,
++ int isShrink, int shadows)
++{
++
++ yaffs_BlockInfo *bi;
++
++ yaffs_Device *dev = in->myDev;
++
++ int prevChunkId;
++ int retVal = 0;
++ int result = 0;
++
++ int newChunkId;
++ yaffs_ExtendedTags newTags;
++ yaffs_ExtendedTags oldTags;
++
++ __u8 *buffer = NULL;
++ YCHAR oldName[YAFFS_MAX_NAME_LENGTH + 1];
++
++ yaffs_ObjectHeader *oh = NULL;
++
++ yaffs_strcpy(oldName,"silly old name");
++
++ if (!in->fake || force) {
++
++ yaffs_CheckGarbageCollection(dev);
++ yaffs_CheckObjectDetailsLoaded(in);
++
++ buffer = yaffs_GetTempBuffer(in->myDev, __LINE__);
++ oh = (yaffs_ObjectHeader *) buffer;
++
++ prevChunkId = in->chunkId;
++
++ if (prevChunkId >= 0) {
++ result = yaffs_ReadChunkWithTagsFromNAND(dev, prevChunkId,
++ buffer, &oldTags);
++
++ yaffs_VerifyObjectHeader(in,oh,&oldTags,0);
++
++ memcpy(oldName, oh->name, sizeof(oh->name));
++ }
++
++ memset(buffer, 0xFF, dev->nDataBytesPerChunk);
++
++ oh->type = in->variantType;
++ oh->yst_mode = in->yst_mode;
++ oh->shadowsObject = shadows;
++
++#ifdef CONFIG_YAFFS_WINCE
++ oh->win_atime[0] = in->win_atime[0];
++ oh->win_ctime[0] = in->win_ctime[0];
++ oh->win_mtime[0] = in->win_mtime[0];
++ oh->win_atime[1] = in->win_atime[1];
++ oh->win_ctime[1] = in->win_ctime[1];
++ oh->win_mtime[1] = in->win_mtime[1];
++#else
++ oh->yst_uid = in->yst_uid;
++ oh->yst_gid = in->yst_gid;
++ oh->yst_atime = in->yst_atime;
++ oh->yst_mtime = in->yst_mtime;
++ oh->yst_ctime = in->yst_ctime;
++ oh->yst_rdev = in->yst_rdev;
++#endif
++ if (in->parent) {
++ oh->parentObjectId = in->parent->objectId;
++ } else {
++ oh->parentObjectId = 0;
++ }
++
++ if (name && *name) {
++ memset(oh->name, 0, sizeof(oh->name));
++ yaffs_strncpy(oh->name, name, YAFFS_MAX_NAME_LENGTH);
++ } else if (prevChunkId>=0) {
++ memcpy(oh->name, oldName, sizeof(oh->name));
++ } else {
++ memset(oh->name, 0, sizeof(oh->name));
++ }
++
++ oh->isShrink = isShrink;
++
++ switch (in->variantType) {
++ case YAFFS_OBJECT_TYPE_UNKNOWN:
++ /* Should not happen */
++ break;
++ case YAFFS_OBJECT_TYPE_FILE:
++ oh->fileSize =
++ (oh->parentObjectId == YAFFS_OBJECTID_DELETED
++ || oh->parentObjectId ==
++ YAFFS_OBJECTID_UNLINKED) ? 0 : in->variant.
++ fileVariant.fileSize;
++ break;
++ case YAFFS_OBJECT_TYPE_HARDLINK:
++ oh->equivalentObjectId =
++ in->variant.hardLinkVariant.equivalentObjectId;
++ break;
++ case YAFFS_OBJECT_TYPE_SPECIAL:
++ /* Do nothing */
++ break;
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
++ /* Do nothing */
++ break;
++ case YAFFS_OBJECT_TYPE_SYMLINK:
++ yaffs_strncpy(oh->alias,
++ in->variant.symLinkVariant.alias,
++ YAFFS_MAX_ALIAS_LENGTH);
++ oh->alias[YAFFS_MAX_ALIAS_LENGTH] = 0;
++ break;
++ }
++
++ /* Tags */
++ yaffs_InitialiseTags(&newTags);
++ in->serial++;
++ newTags.chunkId = 0;
++ newTags.objectId = in->objectId;
++ newTags.serialNumber = in->serial;
++
++ /* Add extra info for file header */
++
++ newTags.extraHeaderInfoAvailable = 1;
++ newTags.extraParentObjectId = oh->parentObjectId;
++ newTags.extraFileLength = oh->fileSize;
++ newTags.extraIsShrinkHeader = oh->isShrink;
++ newTags.extraEquivalentObjectId = oh->equivalentObjectId;
++ newTags.extraShadows = (oh->shadowsObject > 0) ? 1 : 0;
++ newTags.extraObjectType = in->variantType;
++
++ yaffs_VerifyObjectHeader(in,oh,&newTags,1);
++
++ /* Create new chunk in NAND */
++ newChunkId =
++ yaffs_WriteNewChunkWithTagsToNAND(dev, buffer, &newTags,
++ (prevChunkId >= 0) ? 1 : 0);
++
++ if (newChunkId >= 0) {
++
++ in->chunkId = newChunkId;
++
++ if (prevChunkId >= 0) {
++ yaffs_DeleteChunk(dev, prevChunkId, 1,
++ __LINE__);
++ }
++
++ if(!yaffs_ObjectHasCachedWriteData(in))
++ in->dirty = 0;
++
++ /* If this was a shrink, then mark the block that the chunk lives on */
++ if (isShrink) {
++ bi = yaffs_GetBlockInfo(in->myDev,
++ newChunkId /in->myDev-> nChunksPerBlock);
++ bi->hasShrinkHeader = 1;
++ }
++
++ }
++
++ retVal = newChunkId;
++
++ }
++
++ if (buffer)
++ yaffs_ReleaseTempBuffer(dev, buffer, __LINE__);
++
++ return retVal;
++}
++
++/*------------------------ Short Operations Cache ----------------------------------------
++ * In many situations where there is no high level buffering (eg WinCE) a lot of
++ * reads might be short sequential reads, and a lot of writes may be short
++ * sequential writes. eg. scanning/writing a jpeg file.
++ * In these cases, a short read/write cache can provide a huge perfomance benefit
++ * with dumb-as-a-rock code.
++ * In Linux, the page cache provides read buffering aand the short op cache provides write
++ * buffering.
++ *
++ * There are a limited number (~10) of cache chunks per device so that we don't
++ * need a very intelligent search.
++ */
++
++static int yaffs_ObjectHasCachedWriteData(yaffs_Object *obj)
++{
++ yaffs_Device *dev = obj->myDev;
++ int i;
++ yaffs_ChunkCache *cache;
++ int nCaches = obj->myDev->nShortOpCaches;
++
++ for(i = 0; i < nCaches; i++){
++ cache = &dev->srCache[i];
++ if (cache->object == obj &&
++ cache->dirty)
++ return 1;
++ }
++
++ return 0;
++}
++
++
++static void yaffs_FlushFilesChunkCache(yaffs_Object * obj)
++{
++ yaffs_Device *dev = obj->myDev;
++ int lowest = -99; /* Stop compiler whining. */
++ int i;
++ yaffs_ChunkCache *cache;
++ int chunkWritten = 0;
++ int nCaches = obj->myDev->nShortOpCaches;
++
++ if (nCaches > 0) {
++ do {
++ cache = NULL;
++
++ /* Find the dirty cache for this object with the lowest chunk id. */
++ for (i = 0; i < nCaches; i++) {
++ if (dev->srCache[i].object == obj &&
++ dev->srCache[i].dirty) {
++ if (!cache
++ || dev->srCache[i].chunkId <
++ lowest) {
++ cache = &dev->srCache[i];
++ lowest = cache->chunkId;
++ }
++ }
++ }
++
++ if (cache && !cache->locked) {
++ /* Write it out and free it up */
++
++ chunkWritten =
++ yaffs_WriteChunkDataToObject(cache->object,
++ cache->chunkId,
++ cache->data,
++ cache->nBytes,
++ 1);
++ cache->dirty = 0;
++ cache->object = NULL;
++ }
++
++ } while (cache && chunkWritten > 0);
++
++ if (cache) {
++ /* Hoosterman, disk full while writing cache out. */
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("yaffs tragedy: no space during cache write" TENDSTR)));
++
++ }
++ }
++
++}
++
++/*yaffs_FlushEntireDeviceCache(dev)
++ *
++ *
++ */
++
++void yaffs_FlushEntireDeviceCache(yaffs_Device *dev)
++{
++ yaffs_Object *obj;
++ int nCaches = dev->nShortOpCaches;
++ int i;
++
++ /* Find a dirty object in the cache and flush it...
++ * until there are no further dirty objects.
++ */
++ do {
++ obj = NULL;
++ for( i = 0; i < nCaches && !obj; i++) {
++ if (dev->srCache[i].object &&
++ dev->srCache[i].dirty)
++ obj = dev->srCache[i].object;
++
++ }
++ if(obj)
++ yaffs_FlushFilesChunkCache(obj);
++
++ } while(obj);
++
++}
++
++
++/* Grab us a cache chunk for use.
++ * First look for an empty one.
++ * Then look for the least recently used non-dirty one.
++ * Then look for the least recently used dirty one...., flush and look again.
++ */
++static yaffs_ChunkCache *yaffs_GrabChunkCacheWorker(yaffs_Device * dev)
++{
++ int i;
++ int usage;
++ int theOne;
++
++ if (dev->nShortOpCaches > 0) {
++ for (i = 0; i < dev->nShortOpCaches; i++) {
++ if (!dev->srCache[i].object)
++ return &dev->srCache[i];
++ }
++
++ return NULL;
++
++ theOne = -1;
++ usage = 0; /* just to stop the compiler grizzling */
++
++ for (i = 0; i < dev->nShortOpCaches; i++) {
++ if (!dev->srCache[i].dirty &&
++ ((dev->srCache[i].lastUse < usage && theOne >= 0) ||
++ theOne < 0)) {
++ usage = dev->srCache[i].lastUse;
++ theOne = i;
++ }
++ }
++
++
++ return theOne >= 0 ? &dev->srCache[theOne] : NULL;
++ } else {
++ return NULL;
++ }
++
++}
++
++static yaffs_ChunkCache *yaffs_GrabChunkCache(yaffs_Device * dev)
++{
++ yaffs_ChunkCache *cache;
++ yaffs_Object *theObj;
++ int usage;
++ int i;
++ int pushout;
++
++ if (dev->nShortOpCaches > 0) {
++ /* Try find a non-dirty one... */
++
++ cache = yaffs_GrabChunkCacheWorker(dev);
++
++ if (!cache) {
++ /* They were all dirty, find the last recently used object and flush
++ * its cache, then find again.
++ * NB what's here is not very accurate, we actually flush the object
++ * the last recently used page.
++ */
++
++ /* With locking we can't assume we can use entry zero */
++
++ theObj = NULL;
++ usage = -1;
++ cache = NULL;
++ pushout = -1;
++
++ for (i = 0; i < dev->nShortOpCaches; i++) {
++ if (dev->srCache[i].object &&
++ !dev->srCache[i].locked &&
++ (dev->srCache[i].lastUse < usage || !cache))
++ {
++ usage = dev->srCache[i].lastUse;
++ theObj = dev->srCache[i].object;
++ cache = &dev->srCache[i];
++ pushout = i;
++ }
++ }
++
++ if (!cache || cache->dirty) {
++ /* Flush and try again */
++ yaffs_FlushFilesChunkCache(theObj);
++ cache = yaffs_GrabChunkCacheWorker(dev);
++ }
++
++ }
++ return cache;
++ } else
++ return NULL;
++
++}
++
++/* Find a cached chunk */
++static yaffs_ChunkCache *yaffs_FindChunkCache(const yaffs_Object * obj,
++ int chunkId)
++{
++ yaffs_Device *dev = obj->myDev;
++ int i;
++ if (dev->nShortOpCaches > 0) {
++ for (i = 0; i < dev->nShortOpCaches; i++) {
++ if (dev->srCache[i].object == obj &&
++ dev->srCache[i].chunkId == chunkId) {
++ dev->cacheHits++;
++
++ return &dev->srCache[i];
++ }
++ }
++ }
++ return NULL;
++}
++
++/* Mark the chunk for the least recently used algorithym */
++static void yaffs_UseChunkCache(yaffs_Device * dev, yaffs_ChunkCache * cache,
++ int isAWrite)
++{
++
++ if (dev->nShortOpCaches > 0) {
++ if (dev->srLastUse < 0 || dev->srLastUse > 100000000) {
++ /* Reset the cache usages */
++ int i;
++ for (i = 1; i < dev->nShortOpCaches; i++) {
++ dev->srCache[i].lastUse = 0;
++ }
++ dev->srLastUse = 0;
++ }
++
++ dev->srLastUse++;
++
++ cache->lastUse = dev->srLastUse;
++
++ if (isAWrite) {
++ cache->dirty = 1;
++ }
++ }
++}
++
++/* Invalidate a single cache page.
++ * Do this when a whole page gets written,
++ * ie the short cache for this page is no longer valid.
++ */
++static void yaffs_InvalidateChunkCache(yaffs_Object * object, int chunkId)
++{
++ if (object->myDev->nShortOpCaches > 0) {
++ yaffs_ChunkCache *cache = yaffs_FindChunkCache(object, chunkId);
++
++ if (cache) {
++ cache->object = NULL;
++ }
++ }
++}
++
++/* Invalidate all the cache pages associated with this object
++ * Do this whenever ther file is deleted or resized.
++ */
++static void yaffs_InvalidateWholeChunkCache(yaffs_Object * in)
++{
++ int i;
++ yaffs_Device *dev = in->myDev;
++
++ if (dev->nShortOpCaches > 0) {
++ /* Invalidate it. */
++ for (i = 0; i < dev->nShortOpCaches; i++) {
++ if (dev->srCache[i].object == in) {
++ dev->srCache[i].object = NULL;
++ }
++ }
++ }
++}
++
++/*--------------------- Checkpointing --------------------*/
++
++
++static int yaffs_WriteCheckpointValidityMarker(yaffs_Device *dev,int head)
++{
++ yaffs_CheckpointValidity cp;
++
++ memset(&cp,0,sizeof(cp));
++
++ cp.structType = sizeof(cp);
++ cp.magic = YAFFS_MAGIC;
++ cp.version = YAFFS_CHECKPOINT_VERSION;
++ cp.head = (head) ? 1 : 0;
++
++ return (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp))?
++ 1 : 0;
++}
++
++static int yaffs_ReadCheckpointValidityMarker(yaffs_Device *dev, int head)
++{
++ yaffs_CheckpointValidity cp;
++ int ok;
++
++ ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
++
++ if(ok)
++ ok = (cp.structType == sizeof(cp)) &&
++ (cp.magic == YAFFS_MAGIC) &&
++ (cp.version == YAFFS_CHECKPOINT_VERSION) &&
++ (cp.head == ((head) ? 1 : 0));
++ return ok ? 1 : 0;
++}
++
++static void yaffs_DeviceToCheckpointDevice(yaffs_CheckpointDevice *cp,
++ yaffs_Device *dev)
++{
++ cp->nErasedBlocks = dev->nErasedBlocks;
++ cp->allocationBlock = dev->allocationBlock;
++ cp->allocationPage = dev->allocationPage;
++ cp->nFreeChunks = dev->nFreeChunks;
++
++ cp->nDeletedFiles = dev->nDeletedFiles;
++ cp->nUnlinkedFiles = dev->nUnlinkedFiles;
++ cp->nBackgroundDeletions = dev->nBackgroundDeletions;
++ cp->sequenceNumber = dev->sequenceNumber;
++ cp->oldestDirtySequence = dev->oldestDirtySequence;
++
++}
++
++static void yaffs_CheckpointDeviceToDevice(yaffs_Device *dev,
++ yaffs_CheckpointDevice *cp)
++{
++ dev->nErasedBlocks = cp->nErasedBlocks;
++ dev->allocationBlock = cp->allocationBlock;
++ dev->allocationPage = cp->allocationPage;
++ dev->nFreeChunks = cp->nFreeChunks;
++
++ dev->nDeletedFiles = cp->nDeletedFiles;
++ dev->nUnlinkedFiles = cp->nUnlinkedFiles;
++ dev->nBackgroundDeletions = cp->nBackgroundDeletions;
++ dev->sequenceNumber = cp->sequenceNumber;
++ dev->oldestDirtySequence = cp->oldestDirtySequence;
++}
++
++
++static int yaffs_WriteCheckpointDevice(yaffs_Device *dev)
++{
++ yaffs_CheckpointDevice cp;
++ __u32 nBytes;
++ __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
++
++ int ok;
++
++ /* Write device runtime values*/
++ yaffs_DeviceToCheckpointDevice(&cp,dev);
++ cp.structType = sizeof(cp);
++
++ ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
++
++ /* Write block info */
++ if(ok) {
++ nBytes = nBlocks * sizeof(yaffs_BlockInfo);
++ ok = (yaffs_CheckpointWrite(dev,dev->blockInfo,nBytes) == nBytes);
++ }
++
++ /* Write chunk bits */
++ if(ok) {
++ nBytes = nBlocks * dev->chunkBitmapStride;
++ ok = (yaffs_CheckpointWrite(dev,dev->chunkBits,nBytes) == nBytes);
++ }
++ return ok ? 1 : 0;
++
++}
++
++static int yaffs_ReadCheckpointDevice(yaffs_Device *dev)
++{
++ yaffs_CheckpointDevice cp;
++ __u32 nBytes;
++ __u32 nBlocks = (dev->internalEndBlock - dev->internalStartBlock + 1);
++
++ int ok;
++
++ ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
++ if(!ok)
++ return 0;
++
++ if(cp.structType != sizeof(cp))
++ return 0;
++
++
++ yaffs_CheckpointDeviceToDevice(dev,&cp);
++
++ nBytes = nBlocks * sizeof(yaffs_BlockInfo);
++
++ ok = (yaffs_CheckpointRead(dev,dev->blockInfo,nBytes) == nBytes);
++
++ if(!ok)
++ return 0;
++ nBytes = nBlocks * dev->chunkBitmapStride;
++
++ ok = (yaffs_CheckpointRead(dev,dev->chunkBits,nBytes) == nBytes);
++
++ return ok ? 1 : 0;
++}
++
++static void yaffs_ObjectToCheckpointObject(yaffs_CheckpointObject *cp,
++ yaffs_Object *obj)
++{
++
++ cp->objectId = obj->objectId;
++ cp->parentId = (obj->parent) ? obj->parent->objectId : 0;
++ cp->chunkId = obj->chunkId;
++ cp->variantType = obj->variantType;
++ cp->deleted = obj->deleted;
++ cp->softDeleted = obj->softDeleted;
++ cp->unlinked = obj->unlinked;
++ cp->fake = obj->fake;
++ cp->renameAllowed = obj->renameAllowed;
++ cp->unlinkAllowed = obj->unlinkAllowed;
++ cp->serial = obj->serial;
++ cp->nDataChunks = obj->nDataChunks;
++
++ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
++ cp->fileSizeOrEquivalentObjectId = obj->variant.fileVariant.fileSize;
++ else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
++ cp->fileSizeOrEquivalentObjectId = obj->variant.hardLinkVariant.equivalentObjectId;
++}
++
++static void yaffs_CheckpointObjectToObject( yaffs_Object *obj,yaffs_CheckpointObject *cp)
++{
++
++ yaffs_Object *parent;
++
++ obj->objectId = cp->objectId;
++
++ if(cp->parentId)
++ parent = yaffs_FindOrCreateObjectByNumber(
++ obj->myDev,
++ cp->parentId,
++ YAFFS_OBJECT_TYPE_DIRECTORY);
++ else
++ parent = NULL;
++
++ if(parent)
++ yaffs_AddObjectToDirectory(parent, obj);
++
++ obj->chunkId = cp->chunkId;
++ obj->variantType = cp->variantType;
++ obj->deleted = cp->deleted;
++ obj->softDeleted = cp->softDeleted;
++ obj->unlinked = cp->unlinked;
++ obj->fake = cp->fake;
++ obj->renameAllowed = cp->renameAllowed;
++ obj->unlinkAllowed = cp->unlinkAllowed;
++ obj->serial = cp->serial;
++ obj->nDataChunks = cp->nDataChunks;
++
++ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE)
++ obj->variant.fileVariant.fileSize = cp->fileSizeOrEquivalentObjectId;
++ else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK)
++ obj->variant.hardLinkVariant.equivalentObjectId = cp->fileSizeOrEquivalentObjectId;
++
++ if(obj->objectId >= YAFFS_NOBJECT_BUCKETS)
++ obj->lazyLoaded = 1;
++}
++
++
++
++static int yaffs_CheckpointTnodeWorker(yaffs_Object * in, yaffs_Tnode * tn,
++ __u32 level, int chunkOffset)
++{
++ int i;
++ yaffs_Device *dev = in->myDev;
++ int ok = 1;
++ int nTnodeBytes = (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8;
++
++ if (tn) {
++ if (level > 0) {
++
++ for (i = 0; i < YAFFS_NTNODES_INTERNAL && ok; i++){
++ if (tn->internal[i]) {
++ ok = yaffs_CheckpointTnodeWorker(in,
++ tn->internal[i],
++ level - 1,
++ (chunkOffset<<YAFFS_TNODES_INTERNAL_BITS) + i);
++ }
++ }
++ } else if (level == 0) {
++ __u32 baseOffset = chunkOffset << YAFFS_TNODES_LEVEL0_BITS;
++ /* printf("write tnode at %d\n",baseOffset); */
++ ok = (yaffs_CheckpointWrite(dev,&baseOffset,sizeof(baseOffset)) == sizeof(baseOffset));
++ if(ok)
++ ok = (yaffs_CheckpointWrite(dev,tn,nTnodeBytes) == nTnodeBytes);
++ }
++ }
++
++ return ok;
++
++}
++
++static int yaffs_WriteCheckpointTnodes(yaffs_Object *obj)
++{
++ __u32 endMarker = ~0;
++ int ok = 1;
++
++ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE){
++ ok = yaffs_CheckpointTnodeWorker(obj,
++ obj->variant.fileVariant.top,
++ obj->variant.fileVariant.topLevel,
++ 0);
++ if(ok)
++ ok = (yaffs_CheckpointWrite(obj->myDev,&endMarker,sizeof(endMarker)) ==
++ sizeof(endMarker));
++ }
++
++ return ok ? 1 : 0;
++}
++
++static int yaffs_ReadCheckpointTnodes(yaffs_Object *obj)
++{
++ __u32 baseChunk;
++ int ok = 1;
++ yaffs_Device *dev = obj->myDev;
++ yaffs_FileStructure *fileStructPtr = &obj->variant.fileVariant;
++ yaffs_Tnode *tn;
++ int nread = 0;
++
++ ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
++
++ while(ok && (~baseChunk)){
++ nread++;
++ /* Read level 0 tnode */
++
++
++ /* printf("read tnode at %d\n",baseChunk); */
++ tn = yaffs_GetTnodeRaw(dev);
++ if(tn)
++ ok = (yaffs_CheckpointRead(dev,tn,(dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8) ==
++ (dev->tnodeWidth * YAFFS_NTNODES_LEVEL0)/8);
++ else
++ ok = 0;
++
++ if(tn && ok){
++ ok = yaffs_AddOrFindLevel0Tnode(dev,
++ fileStructPtr,
++ baseChunk,
++ tn) ? 1 : 0;
++
++ }
++
++ if(ok)
++ ok = (yaffs_CheckpointRead(dev,&baseChunk,sizeof(baseChunk)) == sizeof(baseChunk));
++
++ }
++
++ T(YAFFS_TRACE_CHECKPOINT,(
++ TSTR("Checkpoint read tnodes %d records, last %d. ok %d" TENDSTR),
++ nread,baseChunk,ok));
++
++ return ok ? 1 : 0;
++}
++
++
++static int yaffs_WriteCheckpointObjects(yaffs_Device *dev)
++{
++ yaffs_Object *obj;
++ yaffs_CheckpointObject cp;
++ int i;
++ int ok = 1;
++ struct list_head *lh;
++
++
++ /* Iterate through the objects in each hash entry,
++ * dumping them to the checkpointing stream.
++ */
++
++ for(i = 0; ok && i < YAFFS_NOBJECT_BUCKETS; i++){
++ list_for_each(lh, &dev->objectBucket[i].list) {
++ if (lh) {
++ obj = list_entry(lh, yaffs_Object, hashLink);
++ if (!obj->deferedFree) {
++ yaffs_ObjectToCheckpointObject(&cp,obj);
++ cp.structType = sizeof(cp);
++
++ T(YAFFS_TRACE_CHECKPOINT,(
++ TSTR("Checkpoint write object %d parent %d type %d chunk %d obj addr %x" TENDSTR),
++ cp.objectId,cp.parentId,cp.variantType,cp.chunkId,(unsigned) obj));
++
++ ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
++
++ if(ok && obj->variantType == YAFFS_OBJECT_TYPE_FILE){
++ ok = yaffs_WriteCheckpointTnodes(obj);
++ }
++ }
++ }
++ }
++ }
++
++ /* Dump end of list */
++ memset(&cp,0xFF,sizeof(yaffs_CheckpointObject));
++ cp.structType = sizeof(cp);
++
++ if(ok)
++ ok = (yaffs_CheckpointWrite(dev,&cp,sizeof(cp)) == sizeof(cp));
++
++ return ok ? 1 : 0;
++}
++
++static int yaffs_ReadCheckpointObjects(yaffs_Device *dev)
++{
++ yaffs_Object *obj;
++ yaffs_CheckpointObject cp;
++ int ok = 1;
++ int done = 0;
++ yaffs_Object *hardList = NULL;
++
++ while(ok && !done) {
++ ok = (yaffs_CheckpointRead(dev,&cp,sizeof(cp)) == sizeof(cp));
++ if(cp.structType != sizeof(cp)) {
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("struct size %d instead of %d ok %d"TENDSTR),
++ cp.structType,sizeof(cp),ok));
++ ok = 0;
++ }
++
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("Checkpoint read object %d parent %d type %d chunk %d " TENDSTR),
++ cp.objectId,cp.parentId,cp.variantType,cp.chunkId));
++
++ if(ok && cp.objectId == ~0)
++ done = 1;
++ else if(ok){
++ obj = yaffs_FindOrCreateObjectByNumber(dev,cp.objectId, cp.variantType);
++ if(obj) {
++ yaffs_CheckpointObjectToObject(obj,&cp);
++ if(obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
++ ok = yaffs_ReadCheckpointTnodes(obj);
++ } else if(obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
++ obj->hardLinks.next =
++ (struct list_head *)
++ hardList;
++ hardList = obj;
++ }
++
++ }
++ }
++ }
++
++ if(ok)
++ yaffs_HardlinkFixup(dev,hardList);
++
++ return ok ? 1 : 0;
++}
++
++static int yaffs_WriteCheckpointSum(yaffs_Device *dev)
++{
++ __u32 checkpointSum;
++ int ok;
++
++ yaffs_GetCheckpointSum(dev,&checkpointSum);
++
++ ok = (yaffs_CheckpointWrite(dev,&checkpointSum,sizeof(checkpointSum)) == sizeof(checkpointSum));
++
++ if(!ok)
++ return 0;
++
++ return 1;
++}
++
++static int yaffs_ReadCheckpointSum(yaffs_Device *dev)
++{
++ __u32 checkpointSum0;
++ __u32 checkpointSum1;
++ int ok;
++
++ yaffs_GetCheckpointSum(dev,&checkpointSum0);
++
++ ok = (yaffs_CheckpointRead(dev,&checkpointSum1,sizeof(checkpointSum1)) == sizeof(checkpointSum1));
++
++ if(!ok)
++ return 0;
++
++ if(checkpointSum0 != checkpointSum1)
++ return 0;
++
++ return 1;
++}
++
++
++static int yaffs_WriteCheckpointData(yaffs_Device *dev)
++{
++
++ int ok = 1;
++
++ if(dev->skipCheckpointWrite || !dev->isYaffs2){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint write" TENDSTR)));
++ ok = 0;
++ }
++
++ if(ok)
++ ok = yaffs_CheckpointOpen(dev,1);
++
++ if(ok){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR)));
++ ok = yaffs_WriteCheckpointValidityMarker(dev,1);
++ }
++ if(ok){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint device" TENDSTR)));
++ ok = yaffs_WriteCheckpointDevice(dev);
++ }
++ if(ok){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint objects" TENDSTR)));
++ ok = yaffs_WriteCheckpointObjects(dev);
++ }
++ if(ok){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("write checkpoint validity" TENDSTR)));
++ ok = yaffs_WriteCheckpointValidityMarker(dev,0);
++ }
++
++ if(ok){
++ ok = yaffs_WriteCheckpointSum(dev);
++ }
++
++
++ if(!yaffs_CheckpointClose(dev))
++ ok = 0;
++
++ if(ok)
++ dev->isCheckpointed = 1;
++ else
++ dev->isCheckpointed = 0;
++
++ return dev->isCheckpointed;
++}
++
++static int yaffs_ReadCheckpointData(yaffs_Device *dev)
++{
++ int ok = 1;
++
++ if(dev->skipCheckpointRead || !dev->isYaffs2){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("skipping checkpoint read" TENDSTR)));
++ ok = 0;
++ }
++
++ if(ok)
++ ok = yaffs_CheckpointOpen(dev,0); /* open for read */
++
++ if(ok){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
++ ok = yaffs_ReadCheckpointValidityMarker(dev,1);
++ }
++ if(ok){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint device" TENDSTR)));
++ ok = yaffs_ReadCheckpointDevice(dev);
++ }
++ if(ok){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint objects" TENDSTR)));
++ ok = yaffs_ReadCheckpointObjects(dev);
++ }
++ if(ok){
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint validity" TENDSTR)));
++ ok = yaffs_ReadCheckpointValidityMarker(dev,0);
++ }
++
++ if(ok){
++ ok = yaffs_ReadCheckpointSum(dev);
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("read checkpoint checksum %d" TENDSTR),ok));
++ }
++
++ if(!yaffs_CheckpointClose(dev))
++ ok = 0;
++
++ if(ok)
++ dev->isCheckpointed = 1;
++ else
++ dev->isCheckpointed = 0;
++
++ return ok ? 1 : 0;
++
++}
++
++static void yaffs_InvalidateCheckpoint(yaffs_Device *dev)
++{
++ if(dev->isCheckpointed ||
++ dev->blocksInCheckpoint > 0){
++ dev->isCheckpointed = 0;
++ yaffs_CheckpointInvalidateStream(dev);
++ if(dev->superBlock && dev->markSuperBlockDirty)
++ dev->markSuperBlockDirty(dev->superBlock);
++ }
++}
++
++
++int yaffs_CheckpointSave(yaffs_Device *dev)
++{
++
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("save entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
++
++ yaffs_VerifyObjects(dev);
++ yaffs_VerifyBlocks(dev);
++ yaffs_VerifyFreeChunks(dev);
++
++ if(!dev->isCheckpointed) {
++ yaffs_InvalidateCheckpoint(dev);
++ yaffs_WriteCheckpointData(dev);
++ }
++
++ T(YAFFS_TRACE_ALWAYS,(TSTR("save exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
++
++ return dev->isCheckpointed;
++}
++
++int yaffs_CheckpointRestore(yaffs_Device *dev)
++{
++ int retval;
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore entry: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
++
++ retval = yaffs_ReadCheckpointData(dev);
++
++ if(dev->isCheckpointed){
++ yaffs_VerifyObjects(dev);
++ yaffs_VerifyBlocks(dev);
++ yaffs_VerifyFreeChunks(dev);
++ }
++
++ T(YAFFS_TRACE_CHECKPOINT,(TSTR("restore exit: isCheckpointed %d"TENDSTR),dev->isCheckpointed));
++
++ return retval;
++}
++
++/*--------------------- File read/write ------------------------
++ * Read and write have very similar structures.
++ * In general the read/write has three parts to it
++ * An incomplete chunk to start with (if the read/write is not chunk-aligned)
++ * Some complete chunks
++ * An incomplete chunk to end off with
++ *
++ * Curve-balls: the first chunk might also be the last chunk.
++ */
++
++int yaffs_ReadDataFromFile(yaffs_Object * in, __u8 * buffer, loff_t offset,
++ int nBytes)
++{
++
++ int chunk;
++ int start;
++ int nToCopy;
++ int n = nBytes;
++ int nDone = 0;
++ yaffs_ChunkCache *cache;
++
++ yaffs_Device *dev;
++
++ dev = in->myDev;
++
++ while (n > 0) {
++ //chunk = offset / dev->nDataBytesPerChunk + 1;
++ //start = offset % dev->nDataBytesPerChunk;
++ yaffs_AddrToChunk(dev,offset,&chunk,&start);
++ chunk++;
++
++ /* OK now check for the curveball where the start and end are in
++ * the same chunk.
++ */
++ if ((start + n) < dev->nDataBytesPerChunk) {
++ nToCopy = n;
++ } else {
++ nToCopy = dev->nDataBytesPerChunk - start;
++ }
++
++ cache = yaffs_FindChunkCache(in, chunk);
++
++ /* If the chunk is already in the cache or it is less than a whole chunk
++ * then use the cache (if there is caching)
++ * else bypass the cache.
++ */
++ if (cache || nToCopy != dev->nDataBytesPerChunk) {
++ if (dev->nShortOpCaches > 0) {
++
++ /* If we can't find the data in the cache, then load it up. */
++
++ if (!cache) {
++ cache = yaffs_GrabChunkCache(in->myDev);
++ cache->object = in;
++ cache->chunkId = chunk;
++ cache->dirty = 0;
++ cache->locked = 0;
++ yaffs_ReadChunkDataFromObject(in, chunk,
++ cache->
++ data);
++ cache->nBytes = 0;
++ }
++
++ yaffs_UseChunkCache(dev, cache, 0);
++
++ cache->locked = 1;
++
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_UnlockYAFFS(TRUE);
++#endif
++ memcpy(buffer, &cache->data[start], nToCopy);
++
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_LockYAFFS(TRUE);
++#endif
++ cache->locked = 0;
++ } else {
++ /* Read into the local buffer then copy..*/
++
++ __u8 *localBuffer =
++ yaffs_GetTempBuffer(dev, __LINE__);
++ yaffs_ReadChunkDataFromObject(in, chunk,
++ localBuffer);
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_UnlockYAFFS(TRUE);
++#endif
++ memcpy(buffer, &localBuffer[start], nToCopy);
++
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_LockYAFFS(TRUE);
++#endif
++ yaffs_ReleaseTempBuffer(dev, localBuffer,
++ __LINE__);
++ }
++
++ } else {
++#ifdef CONFIG_YAFFS_WINCE
++ __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
++
++ /* Under WinCE can't do direct transfer. Need to use a local buffer.
++ * This is because we otherwise screw up WinCE's memory mapper
++ */
++ yaffs_ReadChunkDataFromObject(in, chunk, localBuffer);
++
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_UnlockYAFFS(TRUE);
++#endif
++ memcpy(buffer, localBuffer, dev->nDataBytesPerChunk);
++
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_LockYAFFS(TRUE);
++ yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
++#endif
++
++#else
++ /* A full chunk. Read directly into the supplied buffer. */
++ yaffs_ReadChunkDataFromObject(in, chunk, buffer);
++#endif
++ }
++
++ n -= nToCopy;
++ offset += nToCopy;
++ buffer += nToCopy;
++ nDone += nToCopy;
++
++ }
++
++ return nDone;
++}
++
++int yaffs_WriteDataToFile(yaffs_Object * in, const __u8 * buffer, loff_t offset,
++ int nBytes, int writeThrough)
++{
++
++ int chunk;
++ int start;
++ int nToCopy;
++ int n = nBytes;
++ int nDone = 0;
++ int nToWriteBack;
++ int startOfWrite = offset;
++ int chunkWritten = 0;
++ int nBytesRead;
++
++ yaffs_Device *dev;
++
++ dev = in->myDev;
++
++ while (n > 0 && chunkWritten >= 0) {
++ //chunk = offset / dev->nDataBytesPerChunk + 1;
++ //start = offset % dev->nDataBytesPerChunk;
++ yaffs_AddrToChunk(dev,offset,&chunk,&start);
++ chunk++;
++
++ /* OK now check for the curveball where the start and end are in
++ * the same chunk.
++ */
++
++ if ((start + n) < dev->nDataBytesPerChunk) {
++ nToCopy = n;
++
++ /* Now folks, to calculate how many bytes to write back....
++ * If we're overwriting and not writing to then end of file then
++ * we need to write back as much as was there before.
++ */
++
++ nBytesRead =
++ in->variant.fileVariant.fileSize -
++ ((chunk - 1) * dev->nDataBytesPerChunk);
++
++ if (nBytesRead > dev->nDataBytesPerChunk) {
++ nBytesRead = dev->nDataBytesPerChunk;
++ }
++
++ nToWriteBack =
++ (nBytesRead >
++ (start + n)) ? nBytesRead : (start + n);
++
++ } else {
++ nToCopy = dev->nDataBytesPerChunk - start;
++ nToWriteBack = dev->nDataBytesPerChunk;
++ }
++
++ if (nToCopy != dev->nDataBytesPerChunk) {
++ /* An incomplete start or end chunk (or maybe both start and end chunk) */
++ if (dev->nShortOpCaches > 0) {
++ yaffs_ChunkCache *cache;
++ /* If we can't find the data in the cache, then load the cache */
++ cache = yaffs_FindChunkCache(in, chunk);
++
++ if (!cache
++ && yaffs_CheckSpaceForAllocation(in->
++ myDev)) {
++ cache = yaffs_GrabChunkCache(in->myDev);
++ cache->object = in;
++ cache->chunkId = chunk;
++ cache->dirty = 0;
++ cache->locked = 0;
++ yaffs_ReadChunkDataFromObject(in, chunk,
++ cache->
++ data);
++ }
++ else if(cache &&
++ !cache->dirty &&
++ !yaffs_CheckSpaceForAllocation(in->myDev)){
++ /* Drop the cache if it was a read cache item and
++ * no space check has been made for it.
++ */
++ cache = NULL;
++ }
++
++ if (cache) {
++ yaffs_UseChunkCache(dev, cache, 1);
++ cache->locked = 1;
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_UnlockYAFFS(TRUE);
++#endif
++
++ memcpy(&cache->data[start], buffer,
++ nToCopy);
++
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_LockYAFFS(TRUE);
++#endif
++ cache->locked = 0;
++ cache->nBytes = nToWriteBack;
++
++ if (writeThrough) {
++ chunkWritten =
++ yaffs_WriteChunkDataToObject
++ (cache->object,
++ cache->chunkId,
++ cache->data, cache->nBytes,
++ 1);
++ cache->dirty = 0;
++ }
++
++ } else {
++ chunkWritten = -1; /* fail the write */
++ }
++ } else {
++ /* An incomplete start or end chunk (or maybe both start and end chunk)
++ * Read into the local buffer then copy, then copy over and write back.
++ */
++
++ __u8 *localBuffer =
++ yaffs_GetTempBuffer(dev, __LINE__);
++
++ yaffs_ReadChunkDataFromObject(in, chunk,
++ localBuffer);
++
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_UnlockYAFFS(TRUE);
++#endif
++
++ memcpy(&localBuffer[start], buffer, nToCopy);
++
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_LockYAFFS(TRUE);
++#endif
++ chunkWritten =
++ yaffs_WriteChunkDataToObject(in, chunk,
++ localBuffer,
++ nToWriteBack,
++ 0);
++
++ yaffs_ReleaseTempBuffer(dev, localBuffer,
++ __LINE__);
++
++ }
++
++ } else {
++
++#ifdef CONFIG_YAFFS_WINCE
++ /* Under WinCE can't do direct transfer. Need to use a local buffer.
++ * This is because we otherwise screw up WinCE's memory mapper
++ */
++ __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_UnlockYAFFS(TRUE);
++#endif
++ memcpy(localBuffer, buffer, dev->nDataBytesPerChunk);
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_LockYAFFS(TRUE);
++#endif
++ chunkWritten =
++ yaffs_WriteChunkDataToObject(in, chunk, localBuffer,
++ dev->nDataBytesPerChunk,
++ 0);
++ yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
++#else
++ /* A full chunk. Write directly from the supplied buffer. */
++ chunkWritten =
++ yaffs_WriteChunkDataToObject(in, chunk, buffer,
++ dev->nDataBytesPerChunk,
++ 0);
++#endif
++ /* Since we've overwritten the cached data, we better invalidate it. */
++ yaffs_InvalidateChunkCache(in, chunk);
++ }
++
++ if (chunkWritten >= 0) {
++ n -= nToCopy;
++ offset += nToCopy;
++ buffer += nToCopy;
++ nDone += nToCopy;
++ }
++
++ }
++
++ /* Update file object */
++
++ if ((startOfWrite + nDone) > in->variant.fileVariant.fileSize) {
++ in->variant.fileVariant.fileSize = (startOfWrite + nDone);
++ }
++
++ in->dirty = 1;
++
++ return nDone;
++}
++
++
++/* ---------------------- File resizing stuff ------------------ */
++
++static void yaffs_PruneResizedChunks(yaffs_Object * in, int newSize)
++{
++
++ yaffs_Device *dev = in->myDev;
++ int oldFileSize = in->variant.fileVariant.fileSize;
++
++ int lastDel = 1 + (oldFileSize - 1) / dev->nDataBytesPerChunk;
++
++ int startDel = 1 + (newSize + dev->nDataBytesPerChunk - 1) /
++ dev->nDataBytesPerChunk;
++ int i;
++ int chunkId;
++
++ /* Delete backwards so that we don't end up with holes if
++ * power is lost part-way through the operation.
++ */
++ for (i = lastDel; i >= startDel; i--) {
++ /* NB this could be optimised somewhat,
++ * eg. could retrieve the tags and write them without
++ * using yaffs_DeleteChunk
++ */
++
++ chunkId = yaffs_FindAndDeleteChunkInFile(in, i, NULL);
++ if (chunkId > 0) {
++ if (chunkId <
++ (dev->internalStartBlock * dev->nChunksPerBlock)
++ || chunkId >=
++ ((dev->internalEndBlock +
++ 1) * dev->nChunksPerBlock)) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("Found daft chunkId %d for %d" TENDSTR),
++ chunkId, i));
++ } else {
++ in->nDataChunks--;
++ yaffs_DeleteChunk(dev, chunkId, 1, __LINE__);
++ }
++ }
++ }
++
++}
++
++int yaffs_ResizeFile(yaffs_Object * in, loff_t newSize)
++{
++
++ int oldFileSize = in->variant.fileVariant.fileSize;
++ int newSizeOfPartialChunk;
++ int newFullChunks;
++
++ yaffs_Device *dev = in->myDev;
++
++ yaffs_AddrToChunk(dev, newSize, &newFullChunks, &newSizeOfPartialChunk);
++
++ yaffs_FlushFilesChunkCache(in);
++ yaffs_InvalidateWholeChunkCache(in);
++
++ yaffs_CheckGarbageCollection(dev);
++
++ if (in->variantType != YAFFS_OBJECT_TYPE_FILE) {
++ return yaffs_GetFileSize(in);
++ }
++
++ if (newSize == oldFileSize) {
++ return oldFileSize;
++ }
++
++ if (newSize < oldFileSize) {
++
++ yaffs_PruneResizedChunks(in, newSize);
++
++ if (newSizeOfPartialChunk != 0) {
++ int lastChunk = 1 + newFullChunks;
++
++ __u8 *localBuffer = yaffs_GetTempBuffer(dev, __LINE__);
++
++ /* Got to read and rewrite the last chunk with its new size and zero pad */
++ yaffs_ReadChunkDataFromObject(in, lastChunk,
++ localBuffer);
++
++ memset(localBuffer + newSizeOfPartialChunk, 0,
++ dev->nDataBytesPerChunk - newSizeOfPartialChunk);
++
++ yaffs_WriteChunkDataToObject(in, lastChunk, localBuffer,
++ newSizeOfPartialChunk, 1);
++
++ yaffs_ReleaseTempBuffer(dev, localBuffer, __LINE__);
++ }
++
++ in->variant.fileVariant.fileSize = newSize;
++
++ yaffs_PruneFileStructure(dev, &in->variant.fileVariant);
++ } else {
++ /* newsSize > oldFileSize */
++ in->variant.fileVariant.fileSize = newSize;
++ }
++
++
++
++ /* Write a new object header.
++ * show we've shrunk the file, if need be
++ * Do this only if the file is not in the deleted directories.
++ */
++ if (in->parent->objectId != YAFFS_OBJECTID_UNLINKED &&
++ in->parent->objectId != YAFFS_OBJECTID_DELETED) {
++ yaffs_UpdateObjectHeader(in, NULL, 0,
++ (newSize < oldFileSize) ? 1 : 0, 0);
++ }
++
++ return newSize;
++}
++
++loff_t yaffs_GetFileSize(yaffs_Object * obj)
++{
++ obj = yaffs_GetEquivalentObject(obj);
++
++ switch (obj->variantType) {
++ case YAFFS_OBJECT_TYPE_FILE:
++ return obj->variant.fileVariant.fileSize;
++ case YAFFS_OBJECT_TYPE_SYMLINK:
++ return yaffs_strlen(obj->variant.symLinkVariant.alias);
++ default:
++ return 0;
++ }
++}
++
++
++
++int yaffs_FlushFile(yaffs_Object * in, int updateTime)
++{
++ int retVal;
++ if (in->dirty) {
++ yaffs_FlushFilesChunkCache(in);
++ if (updateTime) {
++#ifdef CONFIG_YAFFS_WINCE
++ yfsd_WinFileTimeNow(in->win_mtime);
++#else
++
++ in->yst_mtime = Y_CURRENT_TIME;
++
++#endif
++ }
++
++ retVal =
++ (yaffs_UpdateObjectHeader(in, NULL, 0, 0, 0) >=
++ 0) ? YAFFS_OK : YAFFS_FAIL;
++ } else {
++ retVal = YAFFS_OK;
++ }
++
++ return retVal;
++
++}
++
++static int yaffs_DoGenericObjectDeletion(yaffs_Object * in)
++{
++
++ /* First off, invalidate the file's data in the cache, without flushing. */
++ yaffs_InvalidateWholeChunkCache(in);
++
++ if (in->myDev->isYaffs2 && (in->parent != in->myDev->deletedDir)) {
++ /* Move to the unlinked directory so we have a record that it was deleted. */
++ yaffs_ChangeObjectName(in, in->myDev->deletedDir,"deleted", 0, 0);
++
++ }
++
++ yaffs_RemoveObjectFromDirectory(in);
++ yaffs_DeleteChunk(in->myDev, in->chunkId, 1, __LINE__);
++ in->chunkId = -1;
++
++ yaffs_FreeObject(in);
++ return YAFFS_OK;
++
++}
++
++/* yaffs_DeleteFile deletes the whole file data
++ * and the inode associated with the file.
++ * It does not delete the links associated with the file.
++ */
++static int yaffs_UnlinkFile(yaffs_Object * in)
++{
++
++ int retVal;
++ int immediateDeletion = 0;
++
++ if (1) {
++#ifdef __KERNEL__
++ if (!in->myInode) {
++ immediateDeletion = 1;
++
++ }
++#else
++ if (in->inUse <= 0) {
++ immediateDeletion = 1;
++
++ }
++#endif
++ if (immediateDeletion) {
++ retVal =
++ yaffs_ChangeObjectName(in, in->myDev->deletedDir,
++ "deleted", 0, 0);
++ T(YAFFS_TRACE_TRACING,
++ (TSTR("yaffs: immediate deletion of file %d" TENDSTR),
++ in->objectId));
++ in->deleted = 1;
++ in->myDev->nDeletedFiles++;
++ if (0 && in->myDev->isYaffs2) {
++ yaffs_ResizeFile(in, 0);
++ }
++ yaffs_SoftDeleteFile(in);
++ } else {
++ retVal =
++ yaffs_ChangeObjectName(in, in->myDev->unlinkedDir,
++ "unlinked", 0, 0);
++ }
++
++ }
++ return retVal;
++}
++
++int yaffs_DeleteFile(yaffs_Object * in)
++{
++ int retVal = YAFFS_OK;
++
++ if (in->nDataChunks > 0) {
++ /* Use soft deletion if there is data in the file */
++ if (!in->unlinked) {
++ retVal = yaffs_UnlinkFile(in);
++ }
++ if (retVal == YAFFS_OK && in->unlinked && !in->deleted) {
++ in->deleted = 1;
++ in->myDev->nDeletedFiles++;
++ yaffs_SoftDeleteFile(in);
++ }
++ return in->deleted ? YAFFS_OK : YAFFS_FAIL;
++ } else {
++ /* The file has no data chunks so we toss it immediately */
++ yaffs_FreeTnode(in->myDev, in->variant.fileVariant.top);
++ in->variant.fileVariant.top = NULL;
++ yaffs_DoGenericObjectDeletion(in);
++
++ return YAFFS_OK;
++ }
++}
++
++static int yaffs_DeleteDirectory(yaffs_Object * in)
++{
++ /* First check that the directory is empty. */
++ if (list_empty(&in->variant.directoryVariant.children)) {
++ return yaffs_DoGenericObjectDeletion(in);
++ }
++
++ return YAFFS_FAIL;
++
++}
++
++static int yaffs_DeleteSymLink(yaffs_Object * in)
++{
++ YFREE(in->variant.symLinkVariant.alias);
++
++ return yaffs_DoGenericObjectDeletion(in);
++}
++
++static int yaffs_DeleteHardLink(yaffs_Object * in)
++{
++ /* remove this hardlink from the list assocaited with the equivalent
++ * object
++ */
++ list_del(&in->hardLinks);
++ return yaffs_DoGenericObjectDeletion(in);
++}
++
++static void yaffs_DestroyObject(yaffs_Object * obj)
++{
++ switch (obj->variantType) {
++ case YAFFS_OBJECT_TYPE_FILE:
++ yaffs_DeleteFile(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
++ yaffs_DeleteDirectory(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_SYMLINK:
++ yaffs_DeleteSymLink(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_HARDLINK:
++ yaffs_DeleteHardLink(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_SPECIAL:
++ yaffs_DoGenericObjectDeletion(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_UNKNOWN:
++ break; /* should not happen. */
++ }
++}
++
++static int yaffs_UnlinkWorker(yaffs_Object * obj)
++{
++
++ if (obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
++ return yaffs_DeleteHardLink(obj);
++ } else if (!list_empty(&obj->hardLinks)) {
++ /* Curve ball: We're unlinking an object that has a hardlink.
++ *
++ * This problem arises because we are not strictly following
++ * The Linux link/inode model.
++ *
++ * We can't really delete the object.
++ * Instead, we do the following:
++ * - Select a hardlink.
++ * - Unhook it from the hard links
++ * - Unhook it from its parent directory (so that the rename can work)
++ * - Rename the object to the hardlink's name.
++ * - Delete the hardlink
++ */
++
++ yaffs_Object *hl;
++ int retVal;
++ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
++
++ hl = list_entry(obj->hardLinks.next, yaffs_Object, hardLinks);
++
++ list_del_init(&hl->hardLinks);
++ list_del_init(&hl->siblings);
++
++ yaffs_GetObjectName(hl, name, YAFFS_MAX_NAME_LENGTH + 1);
++
++ retVal = yaffs_ChangeObjectName(obj, hl->parent, name, 0, 0);
++
++ if (retVal == YAFFS_OK) {
++ retVal = yaffs_DoGenericObjectDeletion(hl);
++ }
++ return retVal;
++
++ } else {
++ switch (obj->variantType) {
++ case YAFFS_OBJECT_TYPE_FILE:
++ return yaffs_UnlinkFile(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
++ return yaffs_DeleteDirectory(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_SYMLINK:
++ return yaffs_DeleteSymLink(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_SPECIAL:
++ return yaffs_DoGenericObjectDeletion(obj);
++ break;
++ case YAFFS_OBJECT_TYPE_HARDLINK:
++ case YAFFS_OBJECT_TYPE_UNKNOWN:
++ default:
++ return YAFFS_FAIL;
++ }
++ }
++}
++
++
++static int yaffs_UnlinkObject( yaffs_Object *obj)
++{
++
++ if (obj && obj->unlinkAllowed) {
++ return yaffs_UnlinkWorker(obj);
++ }
++
++ return YAFFS_FAIL;
++
++}
++int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name)
++{
++ yaffs_Object *obj;
++
++ obj = yaffs_FindObjectByName(dir, name);
++ return yaffs_UnlinkObject(obj);
++}
++
++/*----------------------- Initialisation Scanning ---------------------- */
++
++static void yaffs_HandleShadowedObject(yaffs_Device * dev, int objId,
++ int backwardScanning)
++{
++ yaffs_Object *obj;
++
++ if (!backwardScanning) {
++ /* Handle YAFFS1 forward scanning case
++ * For YAFFS1 we always do the deletion
++ */
++
++ } else {
++ /* Handle YAFFS2 case (backward scanning)
++ * If the shadowed object exists then ignore.
++ */
++ if (yaffs_FindObjectByNumber(dev, objId)) {
++ return;
++ }
++ }
++
++ /* Let's create it (if it does not exist) assuming it is a file so that it can do shrinking etc.
++ * We put it in unlinked dir to be cleaned up after the scanning
++ */
++ obj =
++ yaffs_FindOrCreateObjectByNumber(dev, objId,
++ YAFFS_OBJECT_TYPE_FILE);
++ yaffs_AddObjectToDirectory(dev->unlinkedDir, obj);
++ obj->variant.fileVariant.shrinkSize = 0;
++ obj->valid = 1; /* So that we don't read any other info for this file */
++
++}
++
++typedef struct {
++ int seq;
++ int block;
++} yaffs_BlockIndex;
++
++
++static void yaffs_HardlinkFixup(yaffs_Device *dev, yaffs_Object *hardList)
++{
++ yaffs_Object *hl;
++ yaffs_Object *in;
++
++ while (hardList) {
++ hl = hardList;
++ hardList = (yaffs_Object *) (hardList->hardLinks.next);
++
++ in = yaffs_FindObjectByNumber(dev,
++ hl->variant.hardLinkVariant.
++ equivalentObjectId);
++
++ if (in) {
++ /* Add the hardlink pointers */
++ hl->variant.hardLinkVariant.equivalentObject = in;
++ list_add(&hl->hardLinks, &in->hardLinks);
++ } else {
++ /* Todo Need to report/handle this better.
++ * Got a problem... hardlink to a non-existant object
++ */
++ hl->variant.hardLinkVariant.equivalentObject = NULL;
++ INIT_LIST_HEAD(&hl->hardLinks);
++
++ }
++
++ }
++
++}
++
++
++
++
++
++static int ybicmp(const void *a, const void *b){
++ register int aseq = ((yaffs_BlockIndex *)a)->seq;
++ register int bseq = ((yaffs_BlockIndex *)b)->seq;
++ register int ablock = ((yaffs_BlockIndex *)a)->block;
++ register int bblock = ((yaffs_BlockIndex *)b)->block;
++ if( aseq == bseq )
++ return ablock - bblock;
++ else
++ return aseq - bseq;
++
++}
++
++static int yaffs_Scan(yaffs_Device * dev)
++{
++ yaffs_ExtendedTags tags;
++ int blk;
++ int blockIterator;
++ int startIterator;
++ int endIterator;
++ int nBlocksToScan = 0;
++ int result;
++
++ int chunk;
++ int c;
++ int deleted;
++ yaffs_BlockState state;
++ yaffs_Object *hardList = NULL;
++ yaffs_BlockInfo *bi;
++ int sequenceNumber;
++ yaffs_ObjectHeader *oh;
++ yaffs_Object *in;
++ yaffs_Object *parent;
++ int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
++
++ int alloc_failed = 0;
++
++
++ __u8 *chunkData;
++
++ yaffs_BlockIndex *blockIndex = NULL;
++
++ if (dev->isYaffs2) {
++ T(YAFFS_TRACE_SCAN,
++ (TSTR("yaffs_Scan is not for YAFFS2!" TENDSTR)));
++ return YAFFS_FAIL;
++ }
++
++ //TODO Throw all the yaffs2 stuuf out of yaffs_Scan since it is only for yaffs1 format.
++
++ T(YAFFS_TRACE_SCAN,
++ (TSTR("yaffs_Scan starts intstartblk %d intendblk %d..." TENDSTR),
++ dev->internalStartBlock, dev->internalEndBlock));
++
++ chunkData = yaffs_GetTempBuffer(dev, __LINE__);
++
++ dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
++
++ if (dev->isYaffs2) {
++ blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
++ if(!blockIndex)
++ return YAFFS_FAIL;
++ }
++
++ /* Scan all the blocks to determine their state */
++ for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
++ bi = yaffs_GetBlockInfo(dev, blk);
++ yaffs_ClearChunkBits(dev, blk);
++ bi->pagesInUse = 0;
++ bi->softDeletions = 0;
++
++ yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber);
++
++ bi->blockState = state;
++ bi->sequenceNumber = sequenceNumber;
++
++ T(YAFFS_TRACE_SCAN_DEBUG,
++ (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
++ state, sequenceNumber));
++
++ if (state == YAFFS_BLOCK_STATE_DEAD) {
++ T(YAFFS_TRACE_BAD_BLOCKS,
++ (TSTR("block %d is bad" TENDSTR), blk));
++ } else if (state == YAFFS_BLOCK_STATE_EMPTY) {
++ T(YAFFS_TRACE_SCAN_DEBUG,
++ (TSTR("Block empty " TENDSTR)));
++ dev->nErasedBlocks++;
++ dev->nFreeChunks += dev->nChunksPerBlock;
++ } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
++
++ /* Determine the highest sequence number */
++ if (dev->isYaffs2 &&
++ sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
++ sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
++
++ blockIndex[nBlocksToScan].seq = sequenceNumber;
++ blockIndex[nBlocksToScan].block = blk;
++
++ nBlocksToScan++;
++
++ if (sequenceNumber >= dev->sequenceNumber) {
++ dev->sequenceNumber = sequenceNumber;
++ }
++ } else if (dev->isYaffs2) {
++ /* TODO: Nasty sequence number! */
++ T(YAFFS_TRACE_SCAN,
++ (TSTR
++ ("Block scanning block %d has bad sequence number %d"
++ TENDSTR), blk, sequenceNumber));
++
++ }
++ }
++ }
++
++ /* Sort the blocks
++ * Dungy old bubble sort for now...
++ */
++ if (dev->isYaffs2) {
++ yaffs_BlockIndex temp;
++ int i;
++ int j;
++
++ for (i = 0; i < nBlocksToScan; i++)
++ for (j = i + 1; j < nBlocksToScan; j++)
++ if (blockIndex[i].seq > blockIndex[j].seq) {
++ temp = blockIndex[j];
++ blockIndex[j] = blockIndex[i];
++ blockIndex[i] = temp;
++ }
++ }
++
++ /* Now scan the blocks looking at the data. */
++ if (dev->isYaffs2) {
++ startIterator = 0;
++ endIterator = nBlocksToScan - 1;
++ T(YAFFS_TRACE_SCAN_DEBUG,
++ (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
++ } else {
++ startIterator = dev->internalStartBlock;
++ endIterator = dev->internalEndBlock;
++ }
++
++ /* For each block.... */
++ for (blockIterator = startIterator; !alloc_failed && blockIterator <= endIterator;
++ blockIterator++) {
++
++ if (dev->isYaffs2) {
++ /* get the block to scan in the correct order */
++ blk = blockIndex[blockIterator].block;
++ } else {
++ blk = blockIterator;
++ }
++
++ bi = yaffs_GetBlockInfo(dev, blk);
++ state = bi->blockState;
++
++ deleted = 0;
++
++ /* For each chunk in each block that needs scanning....*/
++ for (c = 0; !alloc_failed && c < dev->nChunksPerBlock &&
++ state == YAFFS_BLOCK_STATE_NEEDS_SCANNING; c++) {
++ /* Read the tags and decide what to do */
++ chunk = blk * dev->nChunksPerBlock + c;
++
++ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
++ &tags);
++
++ /* Let's have a good look at this chunk... */
++
++ if (!dev->isYaffs2 && tags.chunkDeleted) {
++ /* YAFFS1 only...
++ * A deleted chunk
++ */
++ deleted++;
++ dev->nFreeChunks++;
++ /*T((" %d %d deleted\n",blk,c)); */
++ } else if (!tags.chunkUsed) {
++ /* An unassigned chunk in the block
++ * This means that either the block is empty or
++ * this is the one being allocated from
++ */
++
++ if (c == 0) {
++ /* We're looking at the first chunk in the block so the block is unused */
++ state = YAFFS_BLOCK_STATE_EMPTY;
++ dev->nErasedBlocks++;
++ } else {
++ /* this is the block being allocated from */
++ T(YAFFS_TRACE_SCAN,
++ (TSTR
++ (" Allocating from %d %d" TENDSTR),
++ blk, c));
++ state = YAFFS_BLOCK_STATE_ALLOCATING;
++ dev->allocationBlock = blk;
++ dev->allocationPage = c;
++ dev->allocationBlockFinder = blk;
++ /* Set it to here to encourage the allocator to go forth from here. */
++
++ /* Yaffs2 sanity check:
++ * This should be the one with the highest sequence number
++ */
++ if (dev->isYaffs2
++ && (dev->sequenceNumber !=
++ bi->sequenceNumber)) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("yaffs: Allocation block %d was not highest sequence id:"
++ " block seq = %d, dev seq = %d"
++ TENDSTR), blk,bi->sequenceNumber,dev->sequenceNumber));
++ }
++ }
++
++ dev->nFreeChunks += (dev->nChunksPerBlock - c);
++ } else if (tags.chunkId > 0) {
++ /* chunkId > 0 so it is a data chunk... */
++ unsigned int endpos;
++
++ yaffs_SetChunkBit(dev, blk, c);
++ bi->pagesInUse++;
++
++ in = yaffs_FindOrCreateObjectByNumber(dev,
++ tags.
++ objectId,
++ YAFFS_OBJECT_TYPE_FILE);
++ /* PutChunkIntoFile checks for a clash (two data chunks with
++ * the same chunkId).
++ */
++
++ if(!in)
++ alloc_failed = 1;
++
++ if(in){
++ if(!yaffs_PutChunkIntoFile(in, tags.chunkId, chunk,1))
++ alloc_failed = 1;
++ }
++
++ endpos =
++ (tags.chunkId - 1) * dev->nDataBytesPerChunk +
++ tags.byteCount;
++ if (in &&
++ in->variantType == YAFFS_OBJECT_TYPE_FILE
++ && in->variant.fileVariant.scannedFileSize <
++ endpos) {
++ in->variant.fileVariant.
++ scannedFileSize = endpos;
++ if (!dev->useHeaderFileSize) {
++ in->variant.fileVariant.
++ fileSize =
++ in->variant.fileVariant.
++ scannedFileSize;
++ }
++
++ }
++ /* T((" %d %d data %d %d\n",blk,c,tags.objectId,tags.chunkId)); */
++ } else {
++ /* chunkId == 0, so it is an ObjectHeader.
++ * Thus, we read in the object header and make the object
++ */
++ yaffs_SetChunkBit(dev, blk, c);
++ bi->pagesInUse++;
++
++ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk,
++ chunkData,
++ NULL);
++
++ oh = (yaffs_ObjectHeader *) chunkData;
++
++ in = yaffs_FindObjectByNumber(dev,
++ tags.objectId);
++ if (in && in->variantType != oh->type) {
++ /* This should not happen, but somehow
++ * Wev'e ended up with an objectId that has been reused but not yet
++ * deleted, and worse still it has changed type. Delete the old object.
++ */
++
++ yaffs_DestroyObject(in);
++
++ in = 0;
++ }
++
++ in = yaffs_FindOrCreateObjectByNumber(dev,
++ tags.
++ objectId,
++ oh->type);
++
++ if(!in)
++ alloc_failed = 1;
++
++ if (in && oh->shadowsObject > 0) {
++ yaffs_HandleShadowedObject(dev,
++ oh->
++ shadowsObject,
++ 0);
++ }
++
++ if (in && in->valid) {
++ /* We have already filled this one. We have a duplicate and need to resolve it. */
++
++ unsigned existingSerial = in->serial;
++ unsigned newSerial = tags.serialNumber;
++
++ if (dev->isYaffs2 ||
++ ((existingSerial + 1) & 3) ==
++ newSerial) {
++ /* Use new one - destroy the exisiting one */
++ yaffs_DeleteChunk(dev,
++ in->chunkId,
++ 1, __LINE__);
++ in->valid = 0;
++ } else {
++ /* Use existing - destroy this one. */
++ yaffs_DeleteChunk(dev, chunk, 1,
++ __LINE__);
++ }
++ }
++
++ if (in && !in->valid &&
++ (tags.objectId == YAFFS_OBJECTID_ROOT ||
++ tags.objectId == YAFFS_OBJECTID_LOSTNFOUND)) {
++ /* We only load some info, don't fiddle with directory structure */
++ in->valid = 1;
++ in->variantType = oh->type;
++
++ in->yst_mode = oh->yst_mode;
++#ifdef CONFIG_YAFFS_WINCE
++ in->win_atime[0] = oh->win_atime[0];
++ in->win_ctime[0] = oh->win_ctime[0];
++ in->win_mtime[0] = oh->win_mtime[0];
++ in->win_atime[1] = oh->win_atime[1];
++ in->win_ctime[1] = oh->win_ctime[1];
++ in->win_mtime[1] = oh->win_mtime[1];
++#else
++ in->yst_uid = oh->yst_uid;
++ in->yst_gid = oh->yst_gid;
++ in->yst_atime = oh->yst_atime;
++ in->yst_mtime = oh->yst_mtime;
++ in->yst_ctime = oh->yst_ctime;
++ in->yst_rdev = oh->yst_rdev;
++#endif
++ in->chunkId = chunk;
++
++ } else if (in && !in->valid) {
++ /* we need to load this info */
++
++ in->valid = 1;
++ in->variantType = oh->type;
++
++ in->yst_mode = oh->yst_mode;
++#ifdef CONFIG_YAFFS_WINCE
++ in->win_atime[0] = oh->win_atime[0];
++ in->win_ctime[0] = oh->win_ctime[0];
++ in->win_mtime[0] = oh->win_mtime[0];
++ in->win_atime[1] = oh->win_atime[1];
++ in->win_ctime[1] = oh->win_ctime[1];
++ in->win_mtime[1] = oh->win_mtime[1];
++#else
++ in->yst_uid = oh->yst_uid;
++ in->yst_gid = oh->yst_gid;
++ in->yst_atime = oh->yst_atime;
++ in->yst_mtime = oh->yst_mtime;
++ in->yst_ctime = oh->yst_ctime;
++ in->yst_rdev = oh->yst_rdev;
++#endif
++ in->chunkId = chunk;
++
++ yaffs_SetObjectName(in, oh->name);
++ in->dirty = 0;
++
++ /* directory stuff...
++ * hook up to parent
++ */
++
++ parent =
++ yaffs_FindOrCreateObjectByNumber
++ (dev, oh->parentObjectId,
++ YAFFS_OBJECT_TYPE_DIRECTORY);
++ if (parent->variantType ==
++ YAFFS_OBJECT_TYPE_UNKNOWN) {
++ /* Set up as a directory */
++ parent->variantType =
++ YAFFS_OBJECT_TYPE_DIRECTORY;
++ INIT_LIST_HEAD(&parent->variant.
++ directoryVariant.
++ children);
++ } else if (parent->variantType !=
++ YAFFS_OBJECT_TYPE_DIRECTORY)
++ {
++ /* Hoosterman, another problem....
++ * We're trying to use a non-directory as a directory
++ */
++
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("yaffs tragedy: attempting to use non-directory as"
++ " a directory in scan. Put in lost+found."
++ TENDSTR)));
++ parent = dev->lostNFoundDir;
++ }
++
++ yaffs_AddObjectToDirectory(parent, in);
++
++ if (0 && (parent == dev->deletedDir ||
++ parent == dev->unlinkedDir)) {
++ in->deleted = 1; /* If it is unlinked at start up then it wants deleting */
++ dev->nDeletedFiles++;
++ }
++ /* Note re hardlinks.
++ * Since we might scan a hardlink before its equivalent object is scanned
++ * we put them all in a list.
++ * After scanning is complete, we should have all the objects, so we run through this
++ * list and fix up all the chains.
++ */
++
++ switch (in->variantType) {
++ case YAFFS_OBJECT_TYPE_UNKNOWN:
++ /* Todo got a problem */
++ break;
++ case YAFFS_OBJECT_TYPE_FILE:
++ if (dev->isYaffs2
++ && oh->isShrink) {
++ /* Prune back the shrunken chunks */
++ yaffs_PruneResizedChunks
++ (in, oh->fileSize);
++ /* Mark the block as having a shrinkHeader */
++ bi->hasShrinkHeader = 1;
++ }
++
++ if (dev->useHeaderFileSize)
++
++ in->variant.fileVariant.
++ fileSize =
++ oh->fileSize;
++
++ break;
++ case YAFFS_OBJECT_TYPE_HARDLINK:
++ in->variant.hardLinkVariant.
++ equivalentObjectId =
++ oh->equivalentObjectId;
++ in->hardLinks.next =
++ (struct list_head *)
++ hardList;
++ hardList = in;
++ break;
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
++ /* Do nothing */
++ break;
++ case YAFFS_OBJECT_TYPE_SPECIAL:
++ /* Do nothing */
++ break;
++ case YAFFS_OBJECT_TYPE_SYMLINK:
++ in->variant.symLinkVariant.alias =
++ yaffs_CloneString(oh->alias);
++ if(!in->variant.symLinkVariant.alias)
++ alloc_failed = 1;
++ break;
++ }
++
++ if (parent == dev->deletedDir) {
++ yaffs_DestroyObject(in);
++ bi->hasShrinkHeader = 1;
++ }
++ }
++ }
++ }
++
++ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
++ /* If we got this far while scanning, then the block is fully allocated.*/
++ state = YAFFS_BLOCK_STATE_FULL;
++ }
++
++ bi->blockState = state;
++
++ /* Now let's see if it was dirty */
++ if (bi->pagesInUse == 0 &&
++ !bi->hasShrinkHeader &&
++ bi->blockState == YAFFS_BLOCK_STATE_FULL) {
++ yaffs_BlockBecameDirty(dev, blk);
++ }
++
++ }
++
++ if (blockIndex) {
++ YFREE(blockIndex);
++ }
++
++
++ /* Ok, we've done all the scanning.
++ * Fix up the hard link chains.
++ * We should now have scanned all the objects, now it's time to add these
++ * hardlinks.
++ */
++
++ yaffs_HardlinkFixup(dev,hardList);
++
++ /* Handle the unlinked files. Since they were left in an unlinked state we should
++ * just delete them.
++ */
++ {
++ struct list_head *i;
++ struct list_head *n;
++
++ yaffs_Object *l;
++ /* Soft delete all the unlinked files */
++ list_for_each_safe(i, n,
++ &dev->unlinkedDir->variant.directoryVariant.
++ children) {
++ if (i) {
++ l = list_entry(i, yaffs_Object, siblings);
++ yaffs_DestroyObject(l);
++ }
++ }
++ }
++
++ yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
++
++ if(alloc_failed){
++ return YAFFS_FAIL;
++ }
++
++ T(YAFFS_TRACE_SCAN, (TSTR("yaffs_Scan ends" TENDSTR)));
++
++
++ return YAFFS_OK;
++}
++
++static void yaffs_CheckObjectDetailsLoaded(yaffs_Object *in)
++{
++ __u8 *chunkData;
++ yaffs_ObjectHeader *oh;
++ yaffs_Device *dev = in->myDev;
++ yaffs_ExtendedTags tags;
++ int result;
++ int alloc_failed = 0;
++
++ if(!in)
++ return;
++
++#if 0
++ T(YAFFS_TRACE_SCAN,(TSTR("details for object %d %s loaded" TENDSTR),
++ in->objectId,
++ in->lazyLoaded ? "not yet" : "already"));
++#endif
++
++ if(in->lazyLoaded){
++ in->lazyLoaded = 0;
++ chunkData = yaffs_GetTempBuffer(dev, __LINE__);
++
++ result = yaffs_ReadChunkWithTagsFromNAND(dev,in->chunkId,chunkData,&tags);
++ oh = (yaffs_ObjectHeader *) chunkData;
++
++ in->yst_mode = oh->yst_mode;
++#ifdef CONFIG_YAFFS_WINCE
++ in->win_atime[0] = oh->win_atime[0];
++ in->win_ctime[0] = oh->win_ctime[0];
++ in->win_mtime[0] = oh->win_mtime[0];
++ in->win_atime[1] = oh->win_atime[1];
++ in->win_ctime[1] = oh->win_ctime[1];
++ in->win_mtime[1] = oh->win_mtime[1];
++#else
++ in->yst_uid = oh->yst_uid;
++ in->yst_gid = oh->yst_gid;
++ in->yst_atime = oh->yst_atime;
++ in->yst_mtime = oh->yst_mtime;
++ in->yst_ctime = oh->yst_ctime;
++ in->yst_rdev = oh->yst_rdev;
++
++#endif
++ yaffs_SetObjectName(in, oh->name);
++
++ if(in->variantType == YAFFS_OBJECT_TYPE_SYMLINK){
++ in->variant.symLinkVariant.alias =
++ yaffs_CloneString(oh->alias);
++ if(!in->variant.symLinkVariant.alias)
++ alloc_failed = 1; /* Not returned to caller */
++ }
++
++ yaffs_ReleaseTempBuffer(dev,chunkData, __LINE__);
++ }
++}
++
++static int yaffs_ScanBackwards(yaffs_Device * dev)
++{
++ yaffs_ExtendedTags tags;
++ int blk;
++ int blockIterator;
++ int startIterator;
++ int endIterator;
++ int nBlocksToScan = 0;
++
++ int chunk;
++ int result;
++ int c;
++ int deleted;
++ yaffs_BlockState state;
++ yaffs_Object *hardList = NULL;
++ yaffs_BlockInfo *bi;
++ int sequenceNumber;
++ yaffs_ObjectHeader *oh;
++ yaffs_Object *in;
++ yaffs_Object *parent;
++ int nBlocks = dev->internalEndBlock - dev->internalStartBlock + 1;
++ int itsUnlinked;
++ __u8 *chunkData;
++
++ int fileSize;
++ int isShrink;
++ int foundChunksInBlock;
++ int equivalentObjectId;
++ int alloc_failed = 0;
++
++
++ yaffs_BlockIndex *blockIndex = NULL;
++ int altBlockIndex = 0;
++
++ if (!dev->isYaffs2) {
++ T(YAFFS_TRACE_SCAN,
++ (TSTR("yaffs_ScanBackwards is only for YAFFS2!" TENDSTR)));
++ return YAFFS_FAIL;
++ }
++
++ T(YAFFS_TRACE_SCAN,
++ (TSTR
++ ("yaffs_ScanBackwards starts intstartblk %d intendblk %d..."
++ TENDSTR), dev->internalStartBlock, dev->internalEndBlock));
++
++
++ dev->sequenceNumber = YAFFS_LOWEST_SEQUENCE_NUMBER;
++
++ blockIndex = YMALLOC(nBlocks * sizeof(yaffs_BlockIndex));
++
++ if(!blockIndex) {
++ blockIndex = YMALLOC_ALT(nBlocks * sizeof(yaffs_BlockIndex));
++ altBlockIndex = 1;
++ }
++
++ if(!blockIndex) {
++ T(YAFFS_TRACE_SCAN,
++ (TSTR("yaffs_Scan() could not allocate block index!" TENDSTR)));
++ return YAFFS_FAIL;
++ }
++
++ dev->blocksInCheckpoint = 0;
++
++ chunkData = yaffs_GetTempBuffer(dev, __LINE__);
++
++ /* Scan all the blocks to determine their state */
++ for (blk = dev->internalStartBlock; blk <= dev->internalEndBlock; blk++) {
++ bi = yaffs_GetBlockInfo(dev, blk);
++ yaffs_ClearChunkBits(dev, blk);
++ bi->pagesInUse = 0;
++ bi->softDeletions = 0;
++
++ yaffs_QueryInitialBlockState(dev, blk, &state, &sequenceNumber);
++
++ bi->blockState = state;
++ bi->sequenceNumber = sequenceNumber;
++
++ if(bi->sequenceNumber == YAFFS_SEQUENCE_CHECKPOINT_DATA)
++ bi->blockState = state = YAFFS_BLOCK_STATE_CHECKPOINT;
++
++ T(YAFFS_TRACE_SCAN_DEBUG,
++ (TSTR("Block scanning block %d state %d seq %d" TENDSTR), blk,
++ state, sequenceNumber));
++
++
++ if(state == YAFFS_BLOCK_STATE_CHECKPOINT){
++ dev->blocksInCheckpoint++;
++
++ } else if (state == YAFFS_BLOCK_STATE_DEAD) {
++ T(YAFFS_TRACE_BAD_BLOCKS,
++ (TSTR("block %d is bad" TENDSTR), blk));
++ } else if (state == YAFFS_BLOCK_STATE_EMPTY) {
++ T(YAFFS_TRACE_SCAN_DEBUG,
++ (TSTR("Block empty " TENDSTR)));
++ dev->nErasedBlocks++;
++ dev->nFreeChunks += dev->nChunksPerBlock;
++ } else if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
++
++ /* Determine the highest sequence number */
++ if (dev->isYaffs2 &&
++ sequenceNumber >= YAFFS_LOWEST_SEQUENCE_NUMBER &&
++ sequenceNumber < YAFFS_HIGHEST_SEQUENCE_NUMBER) {
++
++ blockIndex[nBlocksToScan].seq = sequenceNumber;
++ blockIndex[nBlocksToScan].block = blk;
++
++ nBlocksToScan++;
++
++ if (sequenceNumber >= dev->sequenceNumber) {
++ dev->sequenceNumber = sequenceNumber;
++ }
++ } else if (dev->isYaffs2) {
++ /* TODO: Nasty sequence number! */
++ T(YAFFS_TRACE_SCAN,
++ (TSTR
++ ("Block scanning block %d has bad sequence number %d"
++ TENDSTR), blk, sequenceNumber));
++
++ }
++ }
++ }
++
++ T(YAFFS_TRACE_SCAN,
++ (TSTR("%d blocks to be sorted..." TENDSTR), nBlocksToScan));
++
++
++
++ YYIELD();
++
++ /* Sort the blocks */
++#ifndef CONFIG_YAFFS_USE_OWN_SORT
++ yaffs_qsort(blockIndex, nBlocksToScan,
++ sizeof(yaffs_BlockIndex), ybicmp);
++#else
++ {
++ /* Dungy old bubble sort... */
++
++ yaffs_BlockIndex temp;
++ int i;
++ int j;
++
++ for (i = 0; i < nBlocksToScan; i++)
++ for (j = i + 1; j < nBlocksToScan; j++)
++ if (blockIndex[i].seq > blockIndex[j].seq) {
++ temp = blockIndex[j];
++ blockIndex[j] = blockIndex[i];
++ blockIndex[i] = temp;
++ }
++ }
++#endif
++
++ YYIELD();
++
++ T(YAFFS_TRACE_SCAN, (TSTR("...done" TENDSTR)));
++
++ /* Now scan the blocks looking at the data. */
++ startIterator = 0;
++ endIterator = nBlocksToScan - 1;
++ T(YAFFS_TRACE_SCAN_DEBUG,
++ (TSTR("%d blocks to be scanned" TENDSTR), nBlocksToScan));
++
++ /* For each block.... backwards */
++ for (blockIterator = endIterator; !alloc_failed && blockIterator >= startIterator;
++ blockIterator--) {
++ /* Cooperative multitasking! This loop can run for so
++ long that watchdog timers expire. */
++ YYIELD();
++
++ /* get the block to scan in the correct order */
++ blk = blockIndex[blockIterator].block;
++
++ bi = yaffs_GetBlockInfo(dev, blk);
++
++
++ state = bi->blockState;
++
++ deleted = 0;
++
++ /* For each chunk in each block that needs scanning.... */
++ foundChunksInBlock = 0;
++ for (c = dev->nChunksPerBlock - 1;
++ !alloc_failed && c >= 0 &&
++ (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
++ state == YAFFS_BLOCK_STATE_ALLOCATING); c--) {
++ /* Scan backwards...
++ * Read the tags and decide what to do
++ */
++
++ chunk = blk * dev->nChunksPerBlock + c;
++
++ result = yaffs_ReadChunkWithTagsFromNAND(dev, chunk, NULL,
++ &tags);
++
++ /* Let's have a good look at this chunk... */
++
++ if (!tags.chunkUsed) {
++ /* An unassigned chunk in the block.
++ * If there are used chunks after this one, then
++ * it is a chunk that was skipped due to failing the erased
++ * check. Just skip it so that it can be deleted.
++ * But, more typically, We get here when this is an unallocated
++ * chunk and his means that either the block is empty or
++ * this is the one being allocated from
++ */
++
++ if(foundChunksInBlock)
++ {
++ /* This is a chunk that was skipped due to failing the erased check */
++
++ } else if (c == 0) {
++ /* We're looking at the first chunk in the block so the block is unused */
++ state = YAFFS_BLOCK_STATE_EMPTY;
++ dev->nErasedBlocks++;
++ } else {
++ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING ||
++ state == YAFFS_BLOCK_STATE_ALLOCATING) {
++ if(dev->sequenceNumber == bi->sequenceNumber) {
++ /* this is the block being allocated from */
++
++ T(YAFFS_TRACE_SCAN,
++ (TSTR
++ (" Allocating from %d %d"
++ TENDSTR), blk, c));
++
++ state = YAFFS_BLOCK_STATE_ALLOCATING;
++ dev->allocationBlock = blk;
++ dev->allocationPage = c;
++ dev->allocationBlockFinder = blk;
++ }
++ else {
++ /* This is a partially written block that is not
++ * the current allocation block. This block must have
++ * had a write failure, so set up for retirement.
++ */
++
++ bi->needsRetiring = 1;
++ bi->gcPrioritise = 1;
++
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("Partially written block %d being set for retirement" TENDSTR),
++ blk));
++ }
++
++ }
++
++ }
++
++ dev->nFreeChunks++;
++
++ } else if (tags.chunkId > 0) {
++ /* chunkId > 0 so it is a data chunk... */
++ unsigned int endpos;
++ __u32 chunkBase =
++ (tags.chunkId - 1) * dev->nDataBytesPerChunk;
++
++ foundChunksInBlock = 1;
++
++
++ yaffs_SetChunkBit(dev, blk, c);
++ bi->pagesInUse++;
++
++ in = yaffs_FindOrCreateObjectByNumber(dev,
++ tags.
++ objectId,
++ YAFFS_OBJECT_TYPE_FILE);
++ if(!in){
++ /* Out of memory */
++ alloc_failed = 1;
++ }
++
++ if (in &&
++ in->variantType == YAFFS_OBJECT_TYPE_FILE
++ && chunkBase <
++ in->variant.fileVariant.shrinkSize) {
++ /* This has not been invalidated by a resize */
++ if(!yaffs_PutChunkIntoFile(in, tags.chunkId,
++ chunk, -1)){
++ alloc_failed = 1;
++ }
++
++ /* File size is calculated by looking at the data chunks if we have not
++ * seen an object header yet. Stop this practice once we find an object header.
++ */
++ endpos =
++ (tags.chunkId -
++ 1) * dev->nDataBytesPerChunk +
++ tags.byteCount;
++
++ if (!in->valid && /* have not got an object header yet */
++ in->variant.fileVariant.
++ scannedFileSize < endpos) {
++ in->variant.fileVariant.
++ scannedFileSize = endpos;
++ in->variant.fileVariant.
++ fileSize =
++ in->variant.fileVariant.
++ scannedFileSize;
++ }
++
++ } else if(in) {
++ /* This chunk has been invalidated by a resize, so delete */
++ yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
++
++ }
++ } else {
++ /* chunkId == 0, so it is an ObjectHeader.
++ * Thus, we read in the object header and make the object
++ */
++ foundChunksInBlock = 1;
++
++ yaffs_SetChunkBit(dev, blk, c);
++ bi->pagesInUse++;
++
++ oh = NULL;
++ in = NULL;
++
++ if (tags.extraHeaderInfoAvailable) {
++ in = yaffs_FindOrCreateObjectByNumber
++ (dev, tags.objectId,
++ tags.extraObjectType);
++ }
++
++ if (!in ||
++#ifdef CONFIG_YAFFS_DISABLE_LAZY_LOAD
++ !in->valid ||
++#endif
++ tags.extraShadows ||
++ (!in->valid &&
++ (tags.objectId == YAFFS_OBJECTID_ROOT ||
++ tags.objectId == YAFFS_OBJECTID_LOSTNFOUND))
++ ) {
++
++ /* If we don't have valid info then we need to read the chunk
++ * TODO In future we can probably defer reading the chunk and
++ * living with invalid data until needed.
++ */
++
++ result = yaffs_ReadChunkWithTagsFromNAND(dev,
++ chunk,
++ chunkData,
++ NULL);
++
++ oh = (yaffs_ObjectHeader *) chunkData;
++
++ if (!in)
++ in = yaffs_FindOrCreateObjectByNumber(dev, tags.objectId, oh->type);
++
++ }
++
++ if (!in) {
++ /* TODO Hoosterman we have a problem! */
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("yaffs tragedy: Could not make object for object %d "
++ "at chunk %d during scan"
++ TENDSTR), tags.objectId, chunk));
++
++ }
++
++ if (in->valid) {
++ /* We have already filled this one.
++ * We have a duplicate that will be discarded, but
++ * we first have to suck out resize info if it is a file.
++ */
++
++ if ((in->variantType == YAFFS_OBJECT_TYPE_FILE) &&
++ ((oh &&
++ oh-> type == YAFFS_OBJECT_TYPE_FILE)||
++ (tags.extraHeaderInfoAvailable &&
++ tags.extraObjectType == YAFFS_OBJECT_TYPE_FILE))
++ ) {
++ __u32 thisSize =
++ (oh) ? oh->fileSize : tags.
++ extraFileLength;
++ __u32 parentObjectId =
++ (oh) ? oh->
++ parentObjectId : tags.
++ extraParentObjectId;
++ unsigned isShrink =
++ (oh) ? oh->isShrink : tags.
++ extraIsShrinkHeader;
++
++ /* If it is deleted (unlinked at start also means deleted)
++ * we treat the file size as being zeroed at this point.
++ */
++ if (parentObjectId ==
++ YAFFS_OBJECTID_DELETED
++ || parentObjectId ==
++ YAFFS_OBJECTID_UNLINKED) {
++ thisSize = 0;
++ isShrink = 1;
++ }
++
++ if (isShrink &&
++ in->variant.fileVariant.
++ shrinkSize > thisSize) {
++ in->variant.fileVariant.
++ shrinkSize =
++ thisSize;
++ }
++
++ if (isShrink) {
++ bi->hasShrinkHeader = 1;
++ }
++
++ }
++ /* Use existing - destroy this one. */
++ yaffs_DeleteChunk(dev, chunk, 1, __LINE__);
++
++ }
++
++ if (!in->valid &&
++ (tags.objectId == YAFFS_OBJECTID_ROOT ||
++ tags.objectId ==
++ YAFFS_OBJECTID_LOSTNFOUND)) {
++ /* We only load some info, don't fiddle with directory structure */
++ in->valid = 1;
++
++ if(oh) {
++ in->variantType = oh->type;
++
++ in->yst_mode = oh->yst_mode;
++#ifdef CONFIG_YAFFS_WINCE
++ in->win_atime[0] = oh->win_atime[0];
++ in->win_ctime[0] = oh->win_ctime[0];
++ in->win_mtime[0] = oh->win_mtime[0];
++ in->win_atime[1] = oh->win_atime[1];
++ in->win_ctime[1] = oh->win_ctime[1];
++ in->win_mtime[1] = oh->win_mtime[1];
++#else
++ in->yst_uid = oh->yst_uid;
++ in->yst_gid = oh->yst_gid;
++ in->yst_atime = oh->yst_atime;
++ in->yst_mtime = oh->yst_mtime;
++ in->yst_ctime = oh->yst_ctime;
++ in->yst_rdev = oh->yst_rdev;
++
++#endif
++ } else {
++ in->variantType = tags.extraObjectType;
++ in->lazyLoaded = 1;
++ }
++
++ in->chunkId = chunk;
++
++ } else if (!in->valid) {
++ /* we need to load this info */
++
++ in->valid = 1;
++ in->chunkId = chunk;
++
++ if(oh) {
++ in->variantType = oh->type;
++
++ in->yst_mode = oh->yst_mode;
++#ifdef CONFIG_YAFFS_WINCE
++ in->win_atime[0] = oh->win_atime[0];
++ in->win_ctime[0] = oh->win_ctime[0];
++ in->win_mtime[0] = oh->win_mtime[0];
++ in->win_atime[1] = oh->win_atime[1];
++ in->win_ctime[1] = oh->win_ctime[1];
++ in->win_mtime[1] = oh->win_mtime[1];
++#else
++ in->yst_uid = oh->yst_uid;
++ in->yst_gid = oh->yst_gid;
++ in->yst_atime = oh->yst_atime;
++ in->yst_mtime = oh->yst_mtime;
++ in->yst_ctime = oh->yst_ctime;
++ in->yst_rdev = oh->yst_rdev;
++#endif
++
++ if (oh->shadowsObject > 0)
++ yaffs_HandleShadowedObject(dev,
++ oh->
++ shadowsObject,
++ 1);
++
++
++ yaffs_SetObjectName(in, oh->name);
++ parent =
++ yaffs_FindOrCreateObjectByNumber
++ (dev, oh->parentObjectId,
++ YAFFS_OBJECT_TYPE_DIRECTORY);
++
++ fileSize = oh->fileSize;
++ isShrink = oh->isShrink;
++ equivalentObjectId = oh->equivalentObjectId;
++
++ }
++ else {
++ in->variantType = tags.extraObjectType;
++ parent =
++ yaffs_FindOrCreateObjectByNumber
++ (dev, tags.extraParentObjectId,
++ YAFFS_OBJECT_TYPE_DIRECTORY);
++ fileSize = tags.extraFileLength;
++ isShrink = tags.extraIsShrinkHeader;
++ equivalentObjectId = tags.extraEquivalentObjectId;
++ in->lazyLoaded = 1;
++
++ }
++ in->dirty = 0;
++
++ /* directory stuff...
++ * hook up to parent
++ */
++
++ if (parent->variantType ==
++ YAFFS_OBJECT_TYPE_UNKNOWN) {
++ /* Set up as a directory */
++ parent->variantType =
++ YAFFS_OBJECT_TYPE_DIRECTORY;
++ INIT_LIST_HEAD(&parent->variant.
++ directoryVariant.
++ children);
++ } else if (parent->variantType !=
++ YAFFS_OBJECT_TYPE_DIRECTORY)
++ {
++ /* Hoosterman, another problem....
++ * We're trying to use a non-directory as a directory
++ */
++
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("yaffs tragedy: attempting to use non-directory as"
++ " a directory in scan. Put in lost+found."
++ TENDSTR)));
++ parent = dev->lostNFoundDir;
++ }
++
++ yaffs_AddObjectToDirectory(parent, in);
++
++ itsUnlinked = (parent == dev->deletedDir) ||
++ (parent == dev->unlinkedDir);
++
++ if (isShrink) {
++ /* Mark the block as having a shrinkHeader */
++ bi->hasShrinkHeader = 1;
++ }
++
++ /* Note re hardlinks.
++ * Since we might scan a hardlink before its equivalent object is scanned
++ * we put them all in a list.
++ * After scanning is complete, we should have all the objects, so we run
++ * through this list and fix up all the chains.
++ */
++
++ switch (in->variantType) {
++ case YAFFS_OBJECT_TYPE_UNKNOWN:
++ /* Todo got a problem */
++ break;
++ case YAFFS_OBJECT_TYPE_FILE:
++
++ if (in->variant.fileVariant.
++ scannedFileSize < fileSize) {
++ /* This covers the case where the file size is greater
++ * than where the data is
++ * This will happen if the file is resized to be larger
++ * than its current data extents.
++ */
++ in->variant.fileVariant.fileSize = fileSize;
++ in->variant.fileVariant.scannedFileSize =
++ in->variant.fileVariant.fileSize;
++ }
++
++ if (isShrink &&
++ in->variant.fileVariant.shrinkSize > fileSize) {
++ in->variant.fileVariant.shrinkSize = fileSize;
++ }
++
++ break;
++ case YAFFS_OBJECT_TYPE_HARDLINK:
++ if(!itsUnlinked) {
++ in->variant.hardLinkVariant.equivalentObjectId =
++ equivalentObjectId;
++ in->hardLinks.next =
++ (struct list_head *) hardList;
++ hardList = in;
++ }
++ break;
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
++ /* Do nothing */
++ break;
++ case YAFFS_OBJECT_TYPE_SPECIAL:
++ /* Do nothing */
++ break;
++ case YAFFS_OBJECT_TYPE_SYMLINK:
++ if(oh){
++ in->variant.symLinkVariant.alias =
++ yaffs_CloneString(oh->
++ alias);
++ if(!in->variant.symLinkVariant.alias)
++ alloc_failed = 1;
++ }
++ break;
++ }
++
++ }
++
++ }
++
++ } /* End of scanning for each chunk */
++
++ if (state == YAFFS_BLOCK_STATE_NEEDS_SCANNING) {
++ /* If we got this far while scanning, then the block is fully allocated. */
++ state = YAFFS_BLOCK_STATE_FULL;
++ }
++
++ bi->blockState = state;
++
++ /* Now let's see if it was dirty */
++ if (bi->pagesInUse == 0 &&
++ !bi->hasShrinkHeader &&
++ bi->blockState == YAFFS_BLOCK_STATE_FULL) {
++ yaffs_BlockBecameDirty(dev, blk);
++ }
++
++ }
++
++ if (altBlockIndex)
++ YFREE_ALT(blockIndex);
++ else
++ YFREE(blockIndex);
++
++ /* Ok, we've done all the scanning.
++ * Fix up the hard link chains.
++ * We should now have scanned all the objects, now it's time to add these
++ * hardlinks.
++ */
++ yaffs_HardlinkFixup(dev,hardList);
++
++
++ /*
++ * Sort out state of unlinked and deleted objects.
++ */
++ {
++ struct list_head *i;
++ struct list_head *n;
++
++ yaffs_Object *l;
++
++ /* Soft delete all the unlinked files */
++ list_for_each_safe(i, n,
++ &dev->unlinkedDir->variant.directoryVariant.
++ children) {
++ if (i) {
++ l = list_entry(i, yaffs_Object, siblings);
++ yaffs_DestroyObject(l);
++ }
++ }
++
++ /* Soft delete all the deletedDir files */
++ list_for_each_safe(i, n,
++ &dev->deletedDir->variant.directoryVariant.
++ children) {
++ if (i) {
++ l = list_entry(i, yaffs_Object, siblings);
++ yaffs_DestroyObject(l);
++
++ }
++ }
++ }
++
++ yaffs_ReleaseTempBuffer(dev, chunkData, __LINE__);
++
++ if(alloc_failed){
++ return YAFFS_FAIL;
++ }
++
++ T(YAFFS_TRACE_SCAN, (TSTR("yaffs_ScanBackwards ends" TENDSTR)));
++
++ return YAFFS_OK;
++}
++
++/*------------------------------ Directory Functions ----------------------------- */
++
++static void yaffs_RemoveObjectFromDirectory(yaffs_Object * obj)
++{
++ yaffs_Device *dev = obj->myDev;
++
++ if(dev && dev->removeObjectCallback)
++ dev->removeObjectCallback(obj);
++
++ list_del_init(&obj->siblings);
++ obj->parent = NULL;
++}
++
++
++static void yaffs_AddObjectToDirectory(yaffs_Object * directory,
++ yaffs_Object * obj)
++{
++
++ if (!directory) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("tragedy: Trying to add an object to a null pointer directory"
++ TENDSTR)));
++ YBUG();
++ }
++ if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("tragedy: Trying to add an object to a non-directory"
++ TENDSTR)));
++ YBUG();
++ }
++
++ if (obj->siblings.prev == NULL) {
++ /* Not initialised */
++ INIT_LIST_HEAD(&obj->siblings);
++
++ } else if (!list_empty(&obj->siblings)) {
++ /* If it is holed up somewhere else, un hook it */
++ yaffs_RemoveObjectFromDirectory(obj);
++ }
++ /* Now add it */
++ list_add(&obj->siblings, &directory->variant.directoryVariant.children);
++ obj->parent = directory;
++
++ if (directory == obj->myDev->unlinkedDir
++ || directory == obj->myDev->deletedDir) {
++ obj->unlinked = 1;
++ obj->myDev->nUnlinkedFiles++;
++ obj->renameAllowed = 0;
++ }
++}
++
++yaffs_Object *yaffs_FindObjectByName(yaffs_Object * directory,
++ const YCHAR * name)
++{
++ int sum;
++
++ struct list_head *i;
++ YCHAR buffer[YAFFS_MAX_NAME_LENGTH + 1];
++
++ yaffs_Object *l;
++
++ if (!name) {
++ return NULL;
++ }
++
++ if (!directory) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("tragedy: yaffs_FindObjectByName: null pointer directory"
++ TENDSTR)));
++ YBUG();
++ }
++ if (directory->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
++ YBUG();
++ }
++
++ sum = yaffs_CalcNameSum(name);
++
++ list_for_each(i, &directory->variant.directoryVariant.children) {
++ if (i) {
++ l = list_entry(i, yaffs_Object, siblings);
++
++ yaffs_CheckObjectDetailsLoaded(l);
++
++ /* Special case for lost-n-found */
++ if (l->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
++ if (yaffs_strcmp(name, YAFFS_LOSTNFOUND_NAME) == 0) {
++ return l;
++ }
++ } else if (yaffs_SumCompare(l->sum, sum) || l->chunkId <= 0)
++ {
++ /* LostnFound cunk called Objxxx
++ * Do a real check
++ */
++ yaffs_GetObjectName(l, buffer,
++ YAFFS_MAX_NAME_LENGTH);
++ if (yaffs_strncmp(name, buffer,YAFFS_MAX_NAME_LENGTH) == 0) {
++ return l;
++ }
++
++ }
++ }
++ }
++
++ return NULL;
++}
++
++
++#if 0
++int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir,
++ int (*fn) (yaffs_Object *))
++{
++ struct list_head *i;
++ yaffs_Object *l;
++
++ if (!theDir) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("tragedy: yaffs_FindObjectByName: null pointer directory"
++ TENDSTR)));
++ YBUG();
++ }
++ if (theDir->variantType != YAFFS_OBJECT_TYPE_DIRECTORY) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("tragedy: yaffs_FindObjectByName: non-directory" TENDSTR)));
++ YBUG();
++ }
++
++ list_for_each(i, &theDir->variant.directoryVariant.children) {
++ if (i) {
++ l = list_entry(i, yaffs_Object, siblings);
++ if (l && !fn(l)) {
++ return YAFFS_FAIL;
++ }
++ }
++ }
++
++ return YAFFS_OK;
++
++}
++#endif
++
++/* GetEquivalentObject dereferences any hard links to get to the
++ * actual object.
++ */
++
++yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj)
++{
++ if (obj && obj->variantType == YAFFS_OBJECT_TYPE_HARDLINK) {
++ /* We want the object id of the equivalent object, not this one */
++ obj = obj->variant.hardLinkVariant.equivalentObject;
++ yaffs_CheckObjectDetailsLoaded(obj);
++ }
++ return obj;
++
++}
++
++int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize)
++{
++ memset(name, 0, buffSize * sizeof(YCHAR));
++
++ yaffs_CheckObjectDetailsLoaded(obj);
++
++ if (obj->objectId == YAFFS_OBJECTID_LOSTNFOUND) {
++ yaffs_strncpy(name, YAFFS_LOSTNFOUND_NAME, buffSize - 1);
++ } else if (obj->chunkId <= 0) {
++ YCHAR locName[20];
++ /* make up a name */
++ yaffs_sprintf(locName, _Y("%s%d"), YAFFS_LOSTNFOUND_PREFIX,
++ obj->objectId);
++ yaffs_strncpy(name, locName, buffSize - 1);
++
++ }
++#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
++ else if (obj->shortName[0]) {
++ yaffs_strcpy(name, obj->shortName);
++ }
++#endif
++ else {
++ int result;
++ __u8 *buffer = yaffs_GetTempBuffer(obj->myDev, __LINE__);
++
++ yaffs_ObjectHeader *oh = (yaffs_ObjectHeader *) buffer;
++
++ memset(buffer, 0, obj->myDev->nDataBytesPerChunk);
++
++ if (obj->chunkId >= 0) {
++ result = yaffs_ReadChunkWithTagsFromNAND(obj->myDev,
++ obj->chunkId, buffer,
++ NULL);
++ }
++ yaffs_strncpy(name, oh->name, buffSize - 1);
++
++ yaffs_ReleaseTempBuffer(obj->myDev, buffer, __LINE__);
++ }
++
++ return yaffs_strlen(name);
++}
++
++int yaffs_GetObjectFileLength(yaffs_Object * obj)
++{
++
++ /* Dereference any hard linking */
++ obj = yaffs_GetEquivalentObject(obj);
++
++ if (obj->variantType == YAFFS_OBJECT_TYPE_FILE) {
++ return obj->variant.fileVariant.fileSize;
++ }
++ if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
++ return yaffs_strlen(obj->variant.symLinkVariant.alias);
++ } else {
++ /* Only a directory should drop through to here */
++ return obj->myDev->nDataBytesPerChunk;
++ }
++}
++
++int yaffs_GetObjectLinkCount(yaffs_Object * obj)
++{
++ int count = 0;
++ struct list_head *i;
++
++ if (!obj->unlinked) {
++ count++; /* the object itself */
++ }
++ list_for_each(i, &obj->hardLinks) {
++ count++; /* add the hard links; */
++ }
++ return count;
++
++}
++
++int yaffs_GetObjectInode(yaffs_Object * obj)
++{
++ obj = yaffs_GetEquivalentObject(obj);
++
++ return obj->objectId;
++}
++
++unsigned yaffs_GetObjectType(yaffs_Object * obj)
++{
++ obj = yaffs_GetEquivalentObject(obj);
++
++ switch (obj->variantType) {
++ case YAFFS_OBJECT_TYPE_FILE:
++ return DT_REG;
++ break;
++ case YAFFS_OBJECT_TYPE_DIRECTORY:
++ return DT_DIR;
++ break;
++ case YAFFS_OBJECT_TYPE_SYMLINK:
++ return DT_LNK;
++ break;
++ case YAFFS_OBJECT_TYPE_HARDLINK:
++ return DT_REG;
++ break;
++ case YAFFS_OBJECT_TYPE_SPECIAL:
++ if (S_ISFIFO(obj->yst_mode))
++ return DT_FIFO;
++ if (S_ISCHR(obj->yst_mode))
++ return DT_CHR;
++ if (S_ISBLK(obj->yst_mode))
++ return DT_BLK;
++ if (S_ISSOCK(obj->yst_mode))
++ return DT_SOCK;
++ default:
++ return DT_REG;
++ break;
++ }
++}
++
++YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj)
++{
++ obj = yaffs_GetEquivalentObject(obj);
++ if (obj->variantType == YAFFS_OBJECT_TYPE_SYMLINK) {
++ return yaffs_CloneString(obj->variant.symLinkVariant.alias);
++ } else {
++ return yaffs_CloneString(_Y(""));
++ }
++}
++
++#ifndef CONFIG_YAFFS_WINCE
++
++int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr)
++{
++ unsigned int valid = attr->ia_valid;
++
++ if (valid & ATTR_MODE)
++ obj->yst_mode = attr->ia_mode;
++ if (valid & ATTR_UID)
++ obj->yst_uid = attr->ia_uid;
++ if (valid & ATTR_GID)
++ obj->yst_gid = attr->ia_gid;
++
++ if (valid & ATTR_ATIME)
++ obj->yst_atime = Y_TIME_CONVERT(attr->ia_atime);
++ if (valid & ATTR_CTIME)
++ obj->yst_ctime = Y_TIME_CONVERT(attr->ia_ctime);
++ if (valid & ATTR_MTIME)
++ obj->yst_mtime = Y_TIME_CONVERT(attr->ia_mtime);
++
++ if (valid & ATTR_SIZE)
++ yaffs_ResizeFile(obj, attr->ia_size);
++
++ yaffs_UpdateObjectHeader(obj, NULL, 1, 0, 0);
++
++ return YAFFS_OK;
++
++}
++int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr)
++{
++ unsigned int valid = 0;
++
++ attr->ia_mode = obj->yst_mode;
++ valid |= ATTR_MODE;
++ attr->ia_uid = obj->yst_uid;
++ valid |= ATTR_UID;
++ attr->ia_gid = obj->yst_gid;
++ valid |= ATTR_GID;
++
++ Y_TIME_CONVERT(attr->ia_atime) = obj->yst_atime;
++ valid |= ATTR_ATIME;
++ Y_TIME_CONVERT(attr->ia_ctime) = obj->yst_ctime;
++ valid |= ATTR_CTIME;
++ Y_TIME_CONVERT(attr->ia_mtime) = obj->yst_mtime;
++ valid |= ATTR_MTIME;
++
++ attr->ia_size = yaffs_GetFileSize(obj);
++ valid |= ATTR_SIZE;
++
++ attr->ia_valid = valid;
++
++ return YAFFS_OK;
++
++}
++
++#endif
++
++#if 0
++int yaffs_DumpObject(yaffs_Object * obj)
++{
++ YCHAR name[257];
++
++ yaffs_GetObjectName(obj, name, 256);
++
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("Object %d, inode %d \"%s\"\n dirty %d valid %d serial %d sum %d"
++ " chunk %d type %d size %d\n"
++ TENDSTR), obj->objectId, yaffs_GetObjectInode(obj), name,
++ obj->dirty, obj->valid, obj->serial, obj->sum, obj->chunkId,
++ yaffs_GetObjectType(obj), yaffs_GetObjectFileLength(obj)));
++
++ return YAFFS_OK;
++}
++#endif
++
++/*---------------------------- Initialisation code -------------------------------------- */
++
++static int yaffs_CheckDevFunctions(const yaffs_Device * dev)
++{
++
++ /* Common functions, gotta have */
++ if (!dev->eraseBlockInNAND || !dev->initialiseNAND)
++ return 0;
++
++#ifdef CONFIG_YAFFS_YAFFS2
++
++ /* Can use the "with tags" style interface for yaffs1 or yaffs2 */
++ if (dev->writeChunkWithTagsToNAND &&
++ dev->readChunkWithTagsFromNAND &&
++ !dev->writeChunkToNAND &&
++ !dev->readChunkFromNAND &&
++ dev->markNANDBlockBad && dev->queryNANDBlock)
++ return 1;
++#endif
++
++ /* Can use the "spare" style interface for yaffs1 */
++ if (!dev->isYaffs2 &&
++ !dev->writeChunkWithTagsToNAND &&
++ !dev->readChunkWithTagsFromNAND &&
++ dev->writeChunkToNAND &&
++ dev->readChunkFromNAND &&
++ !dev->markNANDBlockBad && !dev->queryNANDBlock)
++ return 1;
++
++ return 0; /* bad */
++}
++
++
++static int yaffs_CreateInitialDirectories(yaffs_Device *dev)
++{
++ /* Initialise the unlinked, deleted, root and lost and found directories */
++
++ dev->lostNFoundDir = dev->rootDir = NULL;
++ dev->unlinkedDir = dev->deletedDir = NULL;
++
++ dev->unlinkedDir =
++ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_UNLINKED, S_IFDIR);
++
++ dev->deletedDir =
++ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_DELETED, S_IFDIR);
++
++ dev->rootDir =
++ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_ROOT,
++ YAFFS_ROOT_MODE | S_IFDIR);
++ dev->lostNFoundDir =
++ yaffs_CreateFakeDirectory(dev, YAFFS_OBJECTID_LOSTNFOUND,
++ YAFFS_LOSTNFOUND_MODE | S_IFDIR);
++
++ if(dev->lostNFoundDir && dev->rootDir && dev->unlinkedDir && dev->deletedDir){
++ yaffs_AddObjectToDirectory(dev->rootDir, dev->lostNFoundDir);
++ return YAFFS_OK;
++ }
++
++ return YAFFS_FAIL;
++}
++
++int yaffs_GutsInitialise(yaffs_Device * dev)
++{
++ int init_failed = 0;
++ unsigned x;
++ int bits;
++
++ T(YAFFS_TRACE_TRACING, (TSTR("yaffs: yaffs_GutsInitialise()" TENDSTR)));
++
++ /* Check stuff that must be set */
++
++ if (!dev) {
++ T(YAFFS_TRACE_ALWAYS, (TSTR("yaffs: Need a device" TENDSTR)));
++ return YAFFS_FAIL;
++ }
++
++ dev->internalStartBlock = dev->startBlock;
++ dev->internalEndBlock = dev->endBlock;
++ dev->blockOffset = 0;
++ dev->chunkOffset = 0;
++ dev->nFreeChunks = 0;
++
++ if (dev->startBlock == 0) {
++ dev->internalStartBlock = dev->startBlock + 1;
++ dev->internalEndBlock = dev->endBlock + 1;
++ dev->blockOffset = 1;
++ dev->chunkOffset = dev->nChunksPerBlock;
++ }
++
++ /* Check geometry parameters. */
++
++ if ((dev->isYaffs2 && dev->nDataBytesPerChunk < 1024) ||
++ (!dev->isYaffs2 && dev->nDataBytesPerChunk != 512) ||
++ dev->nChunksPerBlock < 2 ||
++ dev->nReservedBlocks < 2 ||
++ dev->internalStartBlock <= 0 ||
++ dev->internalEndBlock <= 0 ||
++ dev->internalEndBlock <= (dev->internalStartBlock + dev->nReservedBlocks + 2) // otherwise it is too small
++ ) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("yaffs: NAND geometry problems: chunk size %d, type is yaffs%s "
++ TENDSTR), dev->nDataBytesPerChunk, dev->isYaffs2 ? "2" : ""));
++ return YAFFS_FAIL;
++ }
++
++ if (yaffs_InitialiseNAND(dev) != YAFFS_OK) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("yaffs: InitialiseNAND failed" TENDSTR)));
++ return YAFFS_FAIL;
++ }
++
++ /* Got the right mix of functions? */
++ if (!yaffs_CheckDevFunctions(dev)) {
++ /* Function missing */
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR
++ ("yaffs: device function(s) missing or wrong\n" TENDSTR)));
++
++ return YAFFS_FAIL;
++ }
++
++ /* This is really a compilation check. */
++ if (!yaffs_CheckStructures()) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("yaffs_CheckStructures failed\n" TENDSTR)));
++ return YAFFS_FAIL;
++ }
++
++ if (dev->isMounted) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("yaffs: device already mounted\n" TENDSTR)));
++ return YAFFS_FAIL;
++ }
++
++ /* Finished with most checks. One or two more checks happen later on too. */
++
++ dev->isMounted = 1;
++
++
++
++ /* OK now calculate a few things for the device */
++
++ /*
++ * Calculate all the chunk size manipulation numbers:
++ */
++ /* Start off assuming it is a power of 2 */
++ dev->chunkShift = ShiftDiv(dev->nDataBytesPerChunk);
++ dev->chunkMask = (1<<dev->chunkShift) - 1;
++
++ if(dev->nDataBytesPerChunk == (dev->chunkMask + 1)){
++ /* Yes it is a power of 2, disable crumbs */
++ dev->crumbMask = 0;
++ dev->crumbShift = 0;
++ dev->crumbsPerChunk = 0;
++ } else {
++ /* Not a power of 2, use crumbs instead */
++ dev->crumbShift = ShiftDiv(sizeof(yaffs_PackedTags2TagsPart));
++ dev->crumbMask = (1<<dev->crumbShift)-1;
++ dev->crumbsPerChunk = dev->nDataBytesPerChunk/(1 << dev->crumbShift);
++ dev->chunkShift = 0;
++ dev->chunkMask = 0;
++ }
++
++
++ /*
++ * Calculate chunkGroupBits.
++ * We need to find the next power of 2 > than internalEndBlock
++ */
++
++ x = dev->nChunksPerBlock * (dev->internalEndBlock + 1);
++
++ bits = ShiftsGE(x);
++
++ /* Set up tnode width if wide tnodes are enabled. */
++ if(!dev->wideTnodesDisabled){
++ /* bits must be even so that we end up with 32-bit words */
++ if(bits & 1)
++ bits++;
++ if(bits < 16)
++ dev->tnodeWidth = 16;
++ else
++ dev->tnodeWidth = bits;
++ }
++ else
++ dev->tnodeWidth = 16;
++
++ dev->tnodeMask = (1<<dev->tnodeWidth)-1;
++
++ /* Level0 Tnodes are 16 bits or wider (if wide tnodes are enabled),
++ * so if the bitwidth of the
++ * chunk range we're using is greater than 16 we need
++ * to figure out chunk shift and chunkGroupSize
++ */
++
++ if (bits <= dev->tnodeWidth)
++ dev->chunkGroupBits = 0;
++ else
++ dev->chunkGroupBits = bits - dev->tnodeWidth;
++
++
++ dev->chunkGroupSize = 1 << dev->chunkGroupBits;
++
++ if (dev->nChunksPerBlock < dev->chunkGroupSize) {
++ /* We have a problem because the soft delete won't work if
++ * the chunk group size > chunks per block.
++ * This can be remedied by using larger "virtual blocks".
++ */
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("yaffs: chunk group too large\n" TENDSTR)));
++
++ return YAFFS_FAIL;
++ }
++
++ /* OK, we've finished verifying the device, lets continue with initialisation */
++
++ /* More device initialisation */
++ dev->garbageCollections = 0;
++ dev->passiveGarbageCollections = 0;
++ dev->currentDirtyChecker = 0;
++ dev->bufferedBlock = -1;
++ dev->doingBufferedBlockRewrite = 0;
++ dev->nDeletedFiles = 0;
++ dev->nBackgroundDeletions = 0;
++ dev->nUnlinkedFiles = 0;
++ dev->eccFixed = 0;
++ dev->eccUnfixed = 0;
++ dev->tagsEccFixed = 0;
++ dev->tagsEccUnfixed = 0;
++ dev->nErasureFailures = 0;
++ dev->nErasedBlocks = 0;
++ dev->isDoingGC = 0;
++ dev->hasPendingPrioritisedGCs = 1; /* Assume the worst for now, will get fixed on first GC */
++
++ /* Initialise temporary buffers and caches. */
++ if(!yaffs_InitialiseTempBuffers(dev))
++ init_failed = 1;
++
++ dev->srCache = NULL;
++ dev->gcCleanupList = NULL;
++
++
++ if (!init_failed &&
++ dev->nShortOpCaches > 0) {
++ int i;
++ __u8 *buf;
++ int srCacheBytes = dev->nShortOpCaches * sizeof(yaffs_ChunkCache);
++
++ if (dev->nShortOpCaches > YAFFS_MAX_SHORT_OP_CACHES) {
++ dev->nShortOpCaches = YAFFS_MAX_SHORT_OP_CACHES;
++ }
++
++ buf = dev->srCache = YMALLOC(srCacheBytes);
++
++ if(dev->srCache)
++ memset(dev->srCache,0,srCacheBytes);
++
++ for (i = 0; i < dev->nShortOpCaches && buf; i++) {
++ dev->srCache[i].object = NULL;
++ dev->srCache[i].lastUse = 0;
++ dev->srCache[i].dirty = 0;
++ dev->srCache[i].data = buf = YMALLOC_DMA(dev->nDataBytesPerChunk);
++ }
++ if(!buf)
++ init_failed = 1;
++
++ dev->srLastUse = 0;
++ }
++
++ dev->cacheHits = 0;
++
++ if(!init_failed){
++ dev->gcCleanupList = YMALLOC(dev->nChunksPerBlock * sizeof(__u32));
++ if(!dev->gcCleanupList)
++ init_failed = 1;
++ }
++
++ if (dev->isYaffs2) {
++ dev->useHeaderFileSize = 1;
++ }
++ if(!init_failed && !yaffs_InitialiseBlocks(dev))
++ init_failed = 1;
++
++ yaffs_InitialiseTnodes(dev);
++ yaffs_InitialiseObjects(dev);
++
++ if(!init_failed && !yaffs_CreateInitialDirectories(dev))
++ init_failed = 1;
++
++
++ if(!init_failed){
++ /* Now scan the flash. */
++ if (dev->isYaffs2) {
++ if(yaffs_CheckpointRestore(dev)) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("yaffs: restored from checkpoint" TENDSTR)));
++ } else {
++
++ /* Clean up the mess caused by an aborted checkpoint load
++ * and scan backwards.
++ */
++ yaffs_DeinitialiseBlocks(dev);
++ yaffs_DeinitialiseTnodes(dev);
++ yaffs_DeinitialiseObjects(dev);
++
++
++ dev->nErasedBlocks = 0;
++ dev->nFreeChunks = 0;
++ dev->allocationBlock = -1;
++ dev->allocationPage = -1;
++ dev->nDeletedFiles = 0;
++ dev->nUnlinkedFiles = 0;
++ dev->nBackgroundDeletions = 0;
++ dev->oldestDirtySequence = 0;
++
++ if(!init_failed && !yaffs_InitialiseBlocks(dev))
++ init_failed = 1;
++
++ yaffs_InitialiseTnodes(dev);
++ yaffs_InitialiseObjects(dev);
++
++ if(!init_failed && !yaffs_CreateInitialDirectories(dev))
++ init_failed = 1;
++
++ if(!init_failed && !yaffs_ScanBackwards(dev))
++ init_failed = 1;
++ }
++ }else
++ if(!yaffs_Scan(dev))
++ init_failed = 1;
++ }
++
++ if(init_failed){
++ /* Clean up the mess */
++ T(YAFFS_TRACE_TRACING,
++ (TSTR("yaffs: yaffs_GutsInitialise() aborted.\n" TENDSTR)));
++
++ yaffs_Deinitialise(dev);
++ return YAFFS_FAIL;
++ }
++
++ /* Zero out stats */
++ dev->nPageReads = 0;
++ dev->nPageWrites = 0;
++ dev->nBlockErasures = 0;
++ dev->nGCCopies = 0;
++ dev->nRetriedWrites = 0;
++
++ dev->nRetiredBlocks = 0;
++
++ yaffs_VerifyFreeChunks(dev);
++ yaffs_VerifyBlocks(dev);
++
++
++ T(YAFFS_TRACE_TRACING,
++ (TSTR("yaffs: yaffs_GutsInitialise() done.\n" TENDSTR)));
++ return YAFFS_OK;
++
++}
++
++void yaffs_Deinitialise(yaffs_Device * dev)
++{
++ if (dev->isMounted) {
++ int i;
++
++ yaffs_DeinitialiseBlocks(dev);
++ yaffs_DeinitialiseTnodes(dev);
++ yaffs_DeinitialiseObjects(dev);
++ if (dev->nShortOpCaches > 0 &&
++ dev->srCache) {
++
++ for (i = 0; i < dev->nShortOpCaches; i++) {
++ if(dev->srCache[i].data)
++ YFREE(dev->srCache[i].data);
++ dev->srCache[i].data = NULL;
++ }
++
++ YFREE(dev->srCache);
++ dev->srCache = NULL;
++ }
++
++ YFREE(dev->gcCleanupList);
++
++ for (i = 0; i < YAFFS_N_TEMP_BUFFERS; i++) {
++ YFREE(dev->tempBuffer[i].buffer);
++ }
++
++ dev->isMounted = 0;
++ }
++
++}
++
++static int yaffs_CountFreeChunks(yaffs_Device * dev)
++{
++ int nFree;
++ int b;
++
++ yaffs_BlockInfo *blk;
++
++ for (nFree = 0, b = dev->internalStartBlock; b <= dev->internalEndBlock;
++ b++) {
++ blk = yaffs_GetBlockInfo(dev, b);
++
++ switch (blk->blockState) {
++ case YAFFS_BLOCK_STATE_EMPTY:
++ case YAFFS_BLOCK_STATE_ALLOCATING:
++ case YAFFS_BLOCK_STATE_COLLECTING:
++ case YAFFS_BLOCK_STATE_FULL:
++ nFree +=
++ (dev->nChunksPerBlock - blk->pagesInUse +
++ blk->softDeletions);
++ break;
++ default:
++ break;
++ }
++
++ }
++
++ return nFree;
++}
++
++int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev)
++{
++ /* This is what we report to the outside world */
++
++ int nFree;
++ int nDirtyCacheChunks;
++ int blocksForCheckpoint;
++
++#if 1
++ nFree = dev->nFreeChunks;
++#else
++ nFree = yaffs_CountFreeChunks(dev);
++#endif
++
++ nFree += dev->nDeletedFiles;
++
++ /* Now count the number of dirty chunks in the cache and subtract those */
++
++ {
++ int i;
++ for (nDirtyCacheChunks = 0, i = 0; i < dev->nShortOpCaches; i++) {
++ if (dev->srCache[i].dirty)
++ nDirtyCacheChunks++;
++ }
++ }
++
++ nFree -= nDirtyCacheChunks;
++
++ nFree -= ((dev->nReservedBlocks + 1) * dev->nChunksPerBlock);
++
++ /* Now we figure out how much to reserve for the checkpoint and report that... */
++ blocksForCheckpoint = dev->nCheckpointReservedBlocks - dev->blocksInCheckpoint;
++ if(blocksForCheckpoint < 0)
++ blocksForCheckpoint = 0;
++
++ nFree -= (blocksForCheckpoint * dev->nChunksPerBlock);
++
++ if (nFree < 0)
++ nFree = 0;
++
++ return nFree;
++
++}
++
++static int yaffs_freeVerificationFailures;
++
++static void yaffs_VerifyFreeChunks(yaffs_Device * dev)
++{
++ int counted;
++ int difference;
++
++ if(yaffs_SkipVerification(dev))
++ return;
++
++ counted = yaffs_CountFreeChunks(dev);
++
++ difference = dev->nFreeChunks - counted;
++
++ if (difference) {
++ T(YAFFS_TRACE_ALWAYS,
++ (TSTR("Freechunks verification failure %d %d %d" TENDSTR),
++ dev->nFreeChunks, counted, difference));
++ yaffs_freeVerificationFailures++;
++ }
++}
++
++/*---------------------------------------- YAFFS test code ----------------------*/
++
++#define yaffs_CheckStruct(structure,syze, name) \
++ if(sizeof(structure) != syze) \
++ { \
++ T(YAFFS_TRACE_ALWAYS,(TSTR("%s should be %d but is %d\n" TENDSTR),\
++ name,syze,sizeof(structure))); \
++ return YAFFS_FAIL; \
++ }
++
++static int yaffs_CheckStructures(void)
++{
++/* yaffs_CheckStruct(yaffs_Tags,8,"yaffs_Tags") */
++/* yaffs_CheckStruct(yaffs_TagsUnion,8,"yaffs_TagsUnion") */
++/* yaffs_CheckStruct(yaffs_Spare,16,"yaffs_Spare") */
++#ifndef CONFIG_YAFFS_TNODE_LIST_DEBUG
++ yaffs_CheckStruct(yaffs_Tnode, 2 * YAFFS_NTNODES_LEVEL0, "yaffs_Tnode")
++#endif
++ yaffs_CheckStruct(yaffs_ObjectHeader, 512, "yaffs_ObjectHeader")
++
++ return YAFFS_OK;
++}
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_guts.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_guts.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,902 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_GUTS_H__
++#define __YAFFS_GUTS_H__
++
++#include "devextras.h"
++#include "yportenv.h"
++
++#define YAFFS_OK 1
++#define YAFFS_FAIL 0
++
++/* Give us a Y=0x59,
++ * Give us an A=0x41,
++ * Give us an FF=0xFF
++ * Give us an S=0x53
++ * And what have we got...
++ */
++#define YAFFS_MAGIC 0x5941FF53
++
++#define YAFFS_NTNODES_LEVEL0 16
++#define YAFFS_TNODES_LEVEL0_BITS 4
++#define YAFFS_TNODES_LEVEL0_MASK 0xf
++
++#define YAFFS_NTNODES_INTERNAL (YAFFS_NTNODES_LEVEL0 / 2)
++#define YAFFS_TNODES_INTERNAL_BITS (YAFFS_TNODES_LEVEL0_BITS - 1)
++#define YAFFS_TNODES_INTERNAL_MASK 0x7
++#define YAFFS_TNODES_MAX_LEVEL 6
++
++#ifndef CONFIG_YAFFS_NO_YAFFS1
++#define YAFFS_BYTES_PER_SPARE 16
++#define YAFFS_BYTES_PER_CHUNK 512
++#define YAFFS_CHUNK_SIZE_SHIFT 9
++#define YAFFS_CHUNKS_PER_BLOCK 32
++#define YAFFS_BYTES_PER_BLOCK (YAFFS_CHUNKS_PER_BLOCK*YAFFS_BYTES_PER_CHUNK)
++#endif
++
++#define YAFFS_MIN_YAFFS2_CHUNK_SIZE 1024
++#define YAFFS_MIN_YAFFS2_SPARE_SIZE 32
++
++#define YAFFS_MAX_CHUNK_ID 0x000FFFFF
++
++#define YAFFS_UNUSED_OBJECT_ID 0x0003FFFF
++
++#define YAFFS_ALLOCATION_NOBJECTS 100
++#define YAFFS_ALLOCATION_NTNODES 100
++#define YAFFS_ALLOCATION_NLINKS 100
++
++#define YAFFS_NOBJECT_BUCKETS 256
++
++
++#define YAFFS_OBJECT_SPACE 0x40000
++
++#define YAFFS_CHECKPOINT_VERSION 3
++
++#ifdef CONFIG_YAFFS_UNICODE
++#define YAFFS_MAX_NAME_LENGTH 127
++#define YAFFS_MAX_ALIAS_LENGTH 79
++#else
++#define YAFFS_MAX_NAME_LENGTH 255
++#define YAFFS_MAX_ALIAS_LENGTH 159
++#endif
++
++#define YAFFS_SHORT_NAME_LENGTH 15
++
++/* Some special object ids for pseudo objects */
++#define YAFFS_OBJECTID_ROOT 1
++#define YAFFS_OBJECTID_LOSTNFOUND 2
++#define YAFFS_OBJECTID_UNLINKED 3
++#define YAFFS_OBJECTID_DELETED 4
++
++/* Sseudo object ids for checkpointing */
++#define YAFFS_OBJECTID_SB_HEADER 0x10
++#define YAFFS_OBJECTID_CHECKPOINT_DATA 0x20
++#define YAFFS_SEQUENCE_CHECKPOINT_DATA 0x21
++
++/* */
++
++#define YAFFS_MAX_SHORT_OP_CACHES 20
++
++#define YAFFS_N_TEMP_BUFFERS 4
++
++/* We limit the number attempts at sucessfully saving a chunk of data.
++ * Small-page devices have 32 pages per block; large-page devices have 64.
++ * Default to something in the order of 5 to 10 blocks worth of chunks.
++ */
++#define YAFFS_WR_ATTEMPTS (5*64)
++
++/* Sequence numbers are used in YAFFS2 to determine block allocation order.
++ * The range is limited slightly to help distinguish bad numbers from good.
++ * This also allows us to perhaps in the future use special numbers for
++ * special purposes.
++ * EFFFFF00 allows the allocation of 8 blocks per second (~1Mbytes) for 15 years,
++ * and is a larger number than the lifetime of a 2GB device.
++ */
++#define YAFFS_LOWEST_SEQUENCE_NUMBER 0x00001000
++#define YAFFS_HIGHEST_SEQUENCE_NUMBER 0xEFFFFF00
++
++/* ChunkCache is used for short read/write operations.*/
++typedef struct {
++ struct yaffs_ObjectStruct *object;
++ int chunkId;
++ int lastUse;
++ int dirty;
++ int nBytes; /* Only valid if the cache is dirty */
++ int locked; /* Can't push out or flush while locked. */
++#ifdef CONFIG_YAFFS_YAFFS2
++ __u8 *data;
++#else
++ __u8 data[YAFFS_BYTES_PER_CHUNK];
++#endif
++} yaffs_ChunkCache;
++
++
++
++/* Tags structures in RAM
++ * NB This uses bitfield. Bitfields should not straddle a u32 boundary otherwise
++ * the structure size will get blown out.
++ */
++
++#ifndef CONFIG_YAFFS_NO_YAFFS1
++typedef struct {
++ unsigned chunkId:20;
++ unsigned serialNumber:2;
++ unsigned byteCount:10;
++ unsigned objectId:18;
++ unsigned ecc:12;
++ unsigned unusedStuff:2;
++
++} yaffs_Tags;
++
++typedef union {
++ yaffs_Tags asTags;
++ __u8 asBytes[8];
++} yaffs_TagsUnion;
++
++#endif
++
++/* Stuff used for extended tags in YAFFS2 */
++
++typedef enum {
++ YAFFS_ECC_RESULT_UNKNOWN,
++ YAFFS_ECC_RESULT_NO_ERROR,
++ YAFFS_ECC_RESULT_FIXED,
++ YAFFS_ECC_RESULT_UNFIXED
++} yaffs_ECCResult;
++
++typedef enum {
++ YAFFS_OBJECT_TYPE_UNKNOWN,
++ YAFFS_OBJECT_TYPE_FILE,
++ YAFFS_OBJECT_TYPE_SYMLINK,
++ YAFFS_OBJECT_TYPE_DIRECTORY,
++ YAFFS_OBJECT_TYPE_HARDLINK,
++ YAFFS_OBJECT_TYPE_SPECIAL
++} yaffs_ObjectType;
++
++#define YAFFS_OBJECT_TYPE_MAX YAFFS_OBJECT_TYPE_SPECIAL
++
++typedef struct {
++
++ unsigned validMarker0;
++ unsigned chunkUsed; /* Status of the chunk: used or unused */
++ unsigned objectId; /* If 0 then this is not part of an object (unused) */
++ unsigned chunkId; /* If 0 then this is a header, else a data chunk */
++ unsigned byteCount; /* Only valid for data chunks */
++
++ /* The following stuff only has meaning when we read */
++ yaffs_ECCResult eccResult;
++ unsigned blockBad;
++
++ /* YAFFS 1 stuff */
++ unsigned chunkDeleted; /* The chunk is marked deleted */
++ unsigned serialNumber; /* Yaffs1 2-bit serial number */
++
++ /* YAFFS2 stuff */
++ unsigned sequenceNumber; /* The sequence number of this block */
++
++ /* Extra info if this is an object header (YAFFS2 only) */
++
++ unsigned extraHeaderInfoAvailable; /* There is extra info available if this is not zero */
++ unsigned extraParentObjectId; /* The parent object */
++ unsigned extraIsShrinkHeader; /* Is it a shrink header? */
++ unsigned extraShadows; /* Does this shadow another object? */
++
++ yaffs_ObjectType extraObjectType; /* What object type? */
++
++ unsigned extraFileLength; /* Length if it is a file */
++ unsigned extraEquivalentObjectId; /* Equivalent object Id if it is a hard link */
++
++ unsigned validMarker1;
++
++} yaffs_ExtendedTags;
++
++/* Spare structure for YAFFS1 */
++typedef struct {
++ __u8 tagByte0;
++ __u8 tagByte1;
++ __u8 tagByte2;
++ __u8 tagByte3;
++ __u8 pageStatus; /* set to 0 to delete the chunk */
++ __u8 blockStatus;
++ __u8 tagByte4;
++ __u8 tagByte5;
++ __u8 ecc1[3];
++ __u8 tagByte6;
++ __u8 tagByte7;
++ __u8 ecc2[3];
++} yaffs_Spare;
++
++/*Special structure for passing through to mtd */
++struct yaffs_NANDSpare {
++ yaffs_Spare spare;
++ int eccres1;
++ int eccres2;
++};
++
++/* Block data in RAM */
++
++typedef enum {
++ YAFFS_BLOCK_STATE_UNKNOWN = 0,
++
++ YAFFS_BLOCK_STATE_SCANNING,
++ YAFFS_BLOCK_STATE_NEEDS_SCANNING,
++ /* The block might have something on it (ie it is allocating or full, perhaps empty)
++ * but it needs to be scanned to determine its true state.
++ * This state is only valid during yaffs_Scan.
++ * NB We tolerate empty because the pre-scanner might be incapable of deciding
++ * However, if this state is returned on a YAFFS2 device, then we expect a sequence number
++ */
++
++ YAFFS_BLOCK_STATE_EMPTY,
++ /* This block is empty */
++
++ YAFFS_BLOCK_STATE_ALLOCATING,
++ /* This block is partially allocated.
++ * At least one page holds valid data.
++ * This is the one currently being used for page
++ * allocation. Should never be more than one of these
++ */
++
++ YAFFS_BLOCK_STATE_FULL,
++ /* All the pages in this block have been allocated.
++ */
++
++ YAFFS_BLOCK_STATE_DIRTY,
++ /* All pages have been allocated and deleted.
++ * Erase me, reuse me.
++ */
++
++ YAFFS_BLOCK_STATE_CHECKPOINT,
++ /* This block is assigned to holding checkpoint data.
++ */
++
++ YAFFS_BLOCK_STATE_COLLECTING,
++ /* This block is being garbage collected */
++
++ YAFFS_BLOCK_STATE_DEAD
++ /* This block has failed and is not in use */
++} yaffs_BlockState;
++
++#define YAFFS_NUMBER_OF_BLOCK_STATES (YAFFS_BLOCK_STATE_DEAD + 1)
++
++
++typedef struct {
++
++ int softDeletions:10; /* number of soft deleted pages */
++ int pagesInUse:10; /* number of pages in use */
++ yaffs_BlockState blockState:4; /* One of the above block states */
++ __u32 needsRetiring:1; /* Data has failed on this block, need to get valid data off */
++ /* and retire the block. */
++ __u32 skipErasedCheck: 1; /* If this is set we can skip the erased check on this block */
++ __u32 gcPrioritise: 1; /* An ECC check or blank check has failed on this block.
++ It should be prioritised for GC */
++ __u32 chunkErrorStrikes:3; /* How many times we've had ecc etc failures on this block and tried to reuse it */
++
++#ifdef CONFIG_YAFFS_YAFFS2
++ __u32 hasShrinkHeader:1; /* This block has at least one shrink object header */
++ __u32 sequenceNumber; /* block sequence number for yaffs2 */
++#endif
++
++} yaffs_BlockInfo;
++
++/* -------------------------- Object structure -------------------------------*/
++/* This is the object structure as stored on NAND */
++
++typedef struct {
++ yaffs_ObjectType type;
++
++ /* Apply to everything */
++ int parentObjectId;
++ __u16 sum__NoLongerUsed; /* checksum of name. No longer used */
++ YCHAR name[YAFFS_MAX_NAME_LENGTH + 1];
++
++ /* Thes following apply to directories, files, symlinks - not hard links */
++ __u32 yst_mode; /* protection */
++
++#ifdef CONFIG_YAFFS_WINCE
++ __u32 notForWinCE[5];
++#else
++ __u32 yst_uid;
++ __u32 yst_gid;
++ __u32 yst_atime;
++ __u32 yst_mtime;
++ __u32 yst_ctime;
++#endif
++
++ /* File size applies to files only */
++ int fileSize;
++
++ /* Equivalent object id applies to hard links only. */
++ int equivalentObjectId;
++
++ /* Alias is for symlinks only. */
++ YCHAR alias[YAFFS_MAX_ALIAS_LENGTH + 1];
++
++ __u32 yst_rdev; /* device stuff for block and char devices (major/min) */
++
++#ifdef CONFIG_YAFFS_WINCE
++ __u32 win_ctime[2];
++ __u32 win_atime[2];
++ __u32 win_mtime[2];
++ __u32 roomToGrow[4];
++#else
++ __u32 roomToGrow[10];
++#endif
++
++ int shadowsObject; /* This object header shadows the specified object if > 0 */
++
++ /* isShrink applies to object headers written when we shrink the file (ie resize) */
++ __u32 isShrink;
++
++} yaffs_ObjectHeader;
++
++/*--------------------------- Tnode -------------------------- */
++
++union yaffs_Tnode_union {
++#ifdef CONFIG_YAFFS_TNODE_LIST_DEBUG
++ union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL + 1];
++#else
++ union yaffs_Tnode_union *internal[YAFFS_NTNODES_INTERNAL];
++#endif
++/* __u16 level0[YAFFS_NTNODES_LEVEL0]; */
++
++};
++
++typedef union yaffs_Tnode_union yaffs_Tnode;
++
++struct yaffs_TnodeList_struct {
++ struct yaffs_TnodeList_struct *next;
++ yaffs_Tnode *tnodes;
++};
++
++typedef struct yaffs_TnodeList_struct yaffs_TnodeList;
++
++/*------------------------ Object -----------------------------*/
++/* An object can be one of:
++ * - a directory (no data, has children links
++ * - a regular file (data.... not prunes :->).
++ * - a symlink [symbolic link] (the alias).
++ * - a hard link
++ */
++
++typedef struct {
++ __u32 fileSize;
++ __u32 scannedFileSize;
++ __u32 shrinkSize;
++ int topLevel;
++ yaffs_Tnode *top;
++} yaffs_FileStructure;
++
++typedef struct {
++ struct list_head children; /* list of child links */
++} yaffs_DirectoryStructure;
++
++typedef struct {
++ YCHAR *alias;
++} yaffs_SymLinkStructure;
++
++typedef struct {
++ struct yaffs_ObjectStruct *equivalentObject;
++ __u32 equivalentObjectId;
++} yaffs_HardLinkStructure;
++
++typedef union {
++ yaffs_FileStructure fileVariant;
++ yaffs_DirectoryStructure directoryVariant;
++ yaffs_SymLinkStructure symLinkVariant;
++ yaffs_HardLinkStructure hardLinkVariant;
++} yaffs_ObjectVariant;
++
++struct yaffs_ObjectStruct {
++ __u8 deleted:1; /* This should only apply to unlinked files. */
++ __u8 softDeleted:1; /* it has also been soft deleted */
++ __u8 unlinked:1; /* An unlinked file. The file should be in the unlinked directory.*/
++ __u8 fake:1; /* A fake object has no presence on NAND. */
++ __u8 renameAllowed:1; /* Some objects are not allowed to be renamed. */
++ __u8 unlinkAllowed:1;
++ __u8 dirty:1; /* the object needs to be written to flash */
++ __u8 valid:1; /* When the file system is being loaded up, this
++ * object might be created before the data
++ * is available (ie. file data records appear before the header).
++ */
++ __u8 lazyLoaded:1; /* This object has been lazy loaded and is missing some detail */
++
++ __u8 deferedFree:1; /* For Linux kernel. Object is removed from NAND, but is
++ * still in the inode cache. Free of object is defered.
++ * until the inode is released.
++ */
++
++ __u8 serial; /* serial number of chunk in NAND. Cached here */
++ __u16 sum; /* sum of the name to speed searching */
++
++ struct yaffs_DeviceStruct *myDev; /* The device I'm on */
++
++ struct list_head hashLink; /* list of objects in this hash bucket */
++
++ struct list_head hardLinks; /* all the equivalent hard linked objects */
++
++ /* directory structure stuff */
++ /* also used for linking up the free list */
++ struct yaffs_ObjectStruct *parent;
++ struct list_head siblings;
++
++ /* Where's my object header in NAND? */
++ int chunkId;
++
++ int nDataChunks; /* Number of data chunks attached to the file. */
++
++ __u32 objectId; /* the object id value */
++
++ __u32 yst_mode;
++
++#ifdef CONFIG_YAFFS_SHORT_NAMES_IN_RAM
++ YCHAR shortName[YAFFS_SHORT_NAME_LENGTH + 1];
++#endif
++
++#ifndef __KERNEL__
++ __u32 inUse;
++#endif
++
++#ifdef CONFIG_YAFFS_WINCE
++ __u32 win_ctime[2];
++ __u32 win_mtime[2];
++ __u32 win_atime[2];
++#else
++ __u32 yst_uid;
++ __u32 yst_gid;
++ __u32 yst_atime;
++ __u32 yst_mtime;
++ __u32 yst_ctime;
++#endif
++
++ __u32 yst_rdev;
++
++#ifdef __KERNEL__
++ struct inode *myInode;
++
++#endif
++
++ yaffs_ObjectType variantType;
++
++ yaffs_ObjectVariant variant;
++
++};
++
++typedef struct yaffs_ObjectStruct yaffs_Object;
++
++struct yaffs_ObjectList_struct {
++ yaffs_Object *objects;
++ struct yaffs_ObjectList_struct *next;
++};
++
++typedef struct yaffs_ObjectList_struct yaffs_ObjectList;
++
++typedef struct {
++ struct list_head list;
++ int count;
++} yaffs_ObjectBucket;
++
++
++/* yaffs_CheckpointObject holds the definition of an object as dumped
++ * by checkpointing.
++ */
++
++typedef struct {
++ int structType;
++ __u32 objectId;
++ __u32 parentId;
++ int chunkId;
++
++ yaffs_ObjectType variantType:3;
++ __u8 deleted:1;
++ __u8 softDeleted:1;
++ __u8 unlinked:1;
++ __u8 fake:1;
++ __u8 renameAllowed:1;
++ __u8 unlinkAllowed:1;
++ __u8 serial;
++
++ int nDataChunks;
++ __u32 fileSizeOrEquivalentObjectId;
++
++}yaffs_CheckpointObject;
++
++/*--------------------- Temporary buffers ----------------
++ *
++ * These are chunk-sized working buffers. Each device has a few
++ */
++
++typedef struct {
++ __u8 *buffer;
++ int line; /* track from whence this buffer was allocated */
++ int maxLine;
++} yaffs_TempBuffer;
++
++/*----------------- Device ---------------------------------*/
++
++struct yaffs_DeviceStruct {
++ struct list_head devList;
++ const char *name;
++
++ /* Entry parameters set up way early. Yaffs sets up the rest.*/
++ int nDataBytesPerChunk; /* Should be a power of 2 >= 512 */
++ int nChunksPerBlock; /* does not need to be a power of 2 */
++ int nBytesPerSpare; /* spare area size */
++ int startBlock; /* Start block we're allowed to use */
++ int endBlock; /* End block we're allowed to use */
++ int nReservedBlocks; /* We want this tuneable so that we can reduce */
++ /* reserved blocks on NOR and RAM. */
++
++
++ /* Stuff used by the shared space checkpointing mechanism */
++ /* If this value is zero, then this mechanism is disabled */
++
++ int nCheckpointReservedBlocks; /* Blocks to reserve for checkpoint data */
++
++
++
++
++ int nShortOpCaches; /* If <= 0, then short op caching is disabled, else
++ * the number of short op caches (don't use too many)
++ */
++
++ int useHeaderFileSize; /* Flag to determine if we should use file sizes from the header */
++
++ int useNANDECC; /* Flag to decide whether or not to use NANDECC */
++
++ void *genericDevice; /* Pointer to device context
++ * On an mtd this holds the mtd pointer.
++ */
++ void *superBlock;
++
++ /* NAND access functions (Must be set before calling YAFFS)*/
++
++ int (*writeChunkToNAND) (struct yaffs_DeviceStruct * dev,
++ int chunkInNAND, const __u8 * data,
++ const yaffs_Spare * spare);
++ int (*readChunkFromNAND) (struct yaffs_DeviceStruct * dev,
++ int chunkInNAND, __u8 * data,
++ yaffs_Spare * spare);
++ int (*eraseBlockInNAND) (struct yaffs_DeviceStruct * dev,
++ int blockInNAND);
++ int (*initialiseNAND) (struct yaffs_DeviceStruct * dev);
++
++#ifdef CONFIG_YAFFS_YAFFS2
++ int (*writeChunkWithTagsToNAND) (struct yaffs_DeviceStruct * dev,
++ int chunkInNAND, const __u8 * data,
++ const yaffs_ExtendedTags * tags);
++ int (*readChunkWithTagsFromNAND) (struct yaffs_DeviceStruct * dev,
++ int chunkInNAND, __u8 * data,
++ yaffs_ExtendedTags * tags);
++ int (*markNANDBlockBad) (struct yaffs_DeviceStruct * dev, int blockNo);
++ int (*queryNANDBlock) (struct yaffs_DeviceStruct * dev, int blockNo,
++ yaffs_BlockState * state, int *sequenceNumber);
++#endif
++
++ int isYaffs2;
++
++ /* The removeObjectCallback function must be supplied by OS flavours that
++ * need it. The Linux kernel does not use this, but yaffs direct does use
++ * it to implement the faster readdir
++ */
++ void (*removeObjectCallback)(struct yaffs_ObjectStruct *obj);
++
++ /* Callback to mark the superblock dirsty */
++ void (*markSuperBlockDirty)(void * superblock);
++
++ int wideTnodesDisabled; /* Set to disable wide tnodes */
++
++
++ /* End of stuff that must be set before initialisation. */
++
++ /* Checkpoint control. Can be set before or after initialisation */
++ __u8 skipCheckpointRead;
++ __u8 skipCheckpointWrite;
++
++ /* Runtime parameters. Set up by YAFFS. */
++
++ __u16 chunkGroupBits; /* 0 for devices <= 32MB. else log2(nchunks) - 16 */
++ __u16 chunkGroupSize; /* == 2^^chunkGroupBits */
++
++ /* Stuff to support wide tnodes */
++ __u32 tnodeWidth;
++ __u32 tnodeMask;
++
++ /* Stuff to support various file offses to chunk/offset translations */
++ /* "Crumbs" for nDataBytesPerChunk not being a power of 2 */
++ __u32 crumbMask;
++ __u32 crumbShift;
++ __u32 crumbsPerChunk;
++
++ /* Straight shifting for nDataBytesPerChunk being a power of 2 */
++ __u32 chunkShift;
++ __u32 chunkMask;
++
++
++#ifdef __KERNEL__
++
++ struct semaphore sem; /* Semaphore for waiting on erasure.*/
++ struct semaphore grossLock; /* Gross locking semaphore */
++ __u8 *spareBuffer; /* For mtdif2 use. Don't know the size of the buffer
++ * at compile time so we have to allocate it.
++ */
++ void (*putSuperFunc) (struct super_block * sb);
++#endif
++
++ int isMounted;
++
++ int isCheckpointed;
++
++
++ /* Stuff to support block offsetting to support start block zero */
++ int internalStartBlock;
++ int internalEndBlock;
++ int blockOffset;
++ int chunkOffset;
++
++
++ /* Runtime checkpointing stuff */
++ int checkpointPageSequence; /* running sequence number of checkpoint pages */
++ int checkpointByteCount;
++ int checkpointByteOffset;
++ __u8 *checkpointBuffer;
++ int checkpointOpenForWrite;
++ int blocksInCheckpoint;
++ int checkpointCurrentChunk;
++ int checkpointCurrentBlock;
++ int checkpointNextBlock;
++ int *checkpointBlockList;
++ int checkpointMaxBlocks;
++ __u32 checkpointSum;
++ __u32 checkpointXor;
++
++ /* Block Info */
++ yaffs_BlockInfo *blockInfo;
++ __u8 *chunkBits; /* bitmap of chunks in use */
++ unsigned blockInfoAlt:1; /* was allocated using alternative strategy */
++ unsigned chunkBitsAlt:1; /* was allocated using alternative strategy */
++ int chunkBitmapStride; /* Number of bytes of chunkBits per block.
++ * Must be consistent with nChunksPerBlock.
++ */
++
++ int nErasedBlocks;
++ int allocationBlock; /* Current block being allocated off */
++ __u32 allocationPage;
++ int allocationBlockFinder; /* Used to search for next allocation block */
++
++ /* Runtime state */
++ int nTnodesCreated;
++ yaffs_Tnode *freeTnodes;
++ int nFreeTnodes;
++ yaffs_TnodeList *allocatedTnodeList;
++
++ int isDoingGC;
++
++ int nObjectsCreated;
++ yaffs_Object *freeObjects;
++ int nFreeObjects;
++
++ yaffs_ObjectList *allocatedObjectList;
++
++ yaffs_ObjectBucket objectBucket[YAFFS_NOBJECT_BUCKETS];
++
++ int nFreeChunks;
++
++ int currentDirtyChecker; /* Used to find current dirtiest block */
++
++ __u32 *gcCleanupList; /* objects to delete at the end of a GC. */
++ int nonAggressiveSkip; /* GC state/mode */
++
++ /* Statistcs */
++ int nPageWrites;
++ int nPageReads;
++ int nBlockErasures;
++ int nErasureFailures;
++ int nGCCopies;
++ int garbageCollections;
++ int passiveGarbageCollections;
++ int nRetriedWrites;
++ int nRetiredBlocks;
++ int eccFixed;
++ int eccUnfixed;
++ int tagsEccFixed;
++ int tagsEccUnfixed;
++ int nDeletions;
++ int nUnmarkedDeletions;
++
++ int hasPendingPrioritisedGCs; /* We think this device might have pending prioritised gcs */
++
++ /* Special directories */
++ yaffs_Object *rootDir;
++ yaffs_Object *lostNFoundDir;
++
++ /* Buffer areas for storing data to recover from write failures TODO
++ * __u8 bufferedData[YAFFS_CHUNKS_PER_BLOCK][YAFFS_BYTES_PER_CHUNK];
++ * yaffs_Spare bufferedSpare[YAFFS_CHUNKS_PER_BLOCK];
++ */
++
++ int bufferedBlock; /* Which block is buffered here? */
++ int doingBufferedBlockRewrite;
++
++ yaffs_ChunkCache *srCache;
++ int srLastUse;
++
++ int cacheHits;
++
++ /* Stuff for background deletion and unlinked files.*/
++ yaffs_Object *unlinkedDir; /* Directory where unlinked and deleted files live. */
++ yaffs_Object *deletedDir; /* Directory where deleted objects are sent to disappear. */
++ yaffs_Object *unlinkedDeletion; /* Current file being background deleted.*/
++ int nDeletedFiles; /* Count of files awaiting deletion;*/
++ int nUnlinkedFiles; /* Count of unlinked files. */
++ int nBackgroundDeletions; /* Count of background deletions. */
++
++
++ yaffs_TempBuffer tempBuffer[YAFFS_N_TEMP_BUFFERS];
++ int maxTemp;
++ int unmanagedTempAllocations;
++ int unmanagedTempDeallocations;
++
++ /* yaffs2 runtime stuff */
++ unsigned sequenceNumber; /* Sequence number of currently allocating block */
++ unsigned oldestDirtySequence;
++
++};
++
++typedef struct yaffs_DeviceStruct yaffs_Device;
++
++/* The static layout of bllock usage etc is stored in the super block header */
++typedef struct {
++ int StructType;
++ int version;
++ int checkpointStartBlock;
++ int checkpointEndBlock;
++ int startBlock;
++ int endBlock;
++ int rfu[100];
++} yaffs_SuperBlockHeader;
++
++/* The CheckpointDevice structure holds the device information that changes at runtime and
++ * must be preserved over unmount/mount cycles.
++ */
++typedef struct {
++ int structType;
++ int nErasedBlocks;
++ int allocationBlock; /* Current block being allocated off */
++ __u32 allocationPage;
++ int nFreeChunks;
++
++ int nDeletedFiles; /* Count of files awaiting deletion;*/
++ int nUnlinkedFiles; /* Count of unlinked files. */
++ int nBackgroundDeletions; /* Count of background deletions. */
++
++ /* yaffs2 runtime stuff */
++ unsigned sequenceNumber; /* Sequence number of currently allocating block */
++ unsigned oldestDirtySequence;
++
++} yaffs_CheckpointDevice;
++
++
++typedef struct {
++ int structType;
++ __u32 magic;
++ __u32 version;
++ __u32 head;
++} yaffs_CheckpointValidity;
++
++/* Function to manipulate block info */
++static Y_INLINE yaffs_BlockInfo *yaffs_GetBlockInfo(yaffs_Device * dev, int blk)
++{
++ if (blk < dev->internalStartBlock || blk > dev->internalEndBlock) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("**>> yaffs: getBlockInfo block %d is not valid" TENDSTR),
++ blk));
++ YBUG();
++ }
++ return &dev->blockInfo[blk - dev->internalStartBlock];
++}
++
++/*----------------------- YAFFS Functions -----------------------*/
++
++int yaffs_GutsInitialise(yaffs_Device * dev);
++void yaffs_Deinitialise(yaffs_Device * dev);
++
++int yaffs_GetNumberOfFreeChunks(yaffs_Device * dev);
++
++int yaffs_RenameObject(yaffs_Object * oldDir, const YCHAR * oldName,
++ yaffs_Object * newDir, const YCHAR * newName);
++
++int yaffs_Unlink(yaffs_Object * dir, const YCHAR * name);
++int yaffs_DeleteFile(yaffs_Object * obj);
++
++int yaffs_GetObjectName(yaffs_Object * obj, YCHAR * name, int buffSize);
++int yaffs_GetObjectFileLength(yaffs_Object * obj);
++int yaffs_GetObjectInode(yaffs_Object * obj);
++unsigned yaffs_GetObjectType(yaffs_Object * obj);
++int yaffs_GetObjectLinkCount(yaffs_Object * obj);
++
++int yaffs_SetAttributes(yaffs_Object * obj, struct iattr *attr);
++int yaffs_GetAttributes(yaffs_Object * obj, struct iattr *attr);
++
++/* File operations */
++int yaffs_ReadDataFromFile(yaffs_Object * obj, __u8 * buffer, loff_t offset,
++ int nBytes);
++int yaffs_WriteDataToFile(yaffs_Object * obj, const __u8 * buffer, loff_t offset,
++ int nBytes, int writeThrough);
++int yaffs_ResizeFile(yaffs_Object * obj, loff_t newSize);
++
++yaffs_Object *yaffs_MknodFile(yaffs_Object * parent, const YCHAR * name,
++ __u32 mode, __u32 uid, __u32 gid);
++int yaffs_FlushFile(yaffs_Object * obj, int updateTime);
++
++/* Flushing and checkpointing */
++void yaffs_FlushEntireDeviceCache(yaffs_Device *dev);
++
++int yaffs_CheckpointSave(yaffs_Device *dev);
++int yaffs_CheckpointRestore(yaffs_Device *dev);
++
++/* Directory operations */
++yaffs_Object *yaffs_MknodDirectory(yaffs_Object * parent, const YCHAR * name,
++ __u32 mode, __u32 uid, __u32 gid);
++yaffs_Object *yaffs_FindObjectByName(yaffs_Object * theDir, const YCHAR * name);
++int yaffs_ApplyToDirectoryChildren(yaffs_Object * theDir,
++ int (*fn) (yaffs_Object *));
++
++yaffs_Object *yaffs_FindObjectByNumber(yaffs_Device * dev, __u32 number);
++
++/* Link operations */
++yaffs_Object *yaffs_Link(yaffs_Object * parent, const YCHAR * name,
++ yaffs_Object * equivalentObject);
++
++yaffs_Object *yaffs_GetEquivalentObject(yaffs_Object * obj);
++
++/* Symlink operations */
++yaffs_Object *yaffs_MknodSymLink(yaffs_Object * parent, const YCHAR * name,
++ __u32 mode, __u32 uid, __u32 gid,
++ const YCHAR * alias);
++YCHAR *yaffs_GetSymlinkAlias(yaffs_Object * obj);
++
++/* Special inodes (fifos, sockets and devices) */
++yaffs_Object *yaffs_MknodSpecial(yaffs_Object * parent, const YCHAR * name,
++ __u32 mode, __u32 uid, __u32 gid, __u32 rdev);
++
++/* Special directories */
++yaffs_Object *yaffs_Root(yaffs_Device * dev);
++yaffs_Object *yaffs_LostNFound(yaffs_Device * dev);
++
++#ifdef CONFIG_YAFFS_WINCE
++/* CONFIG_YAFFS_WINCE special stuff */
++void yfsd_WinFileTimeNow(__u32 target[2]);
++#endif
++
++#ifdef __KERNEL__
++
++void yaffs_HandleDeferedFree(yaffs_Object * obj);
++#endif
++
++/* Debug dump */
++int yaffs_DumpObject(yaffs_Object * obj);
++
++void yaffs_GutsTest(yaffs_Device * dev);
++
++/* A few useful functions */
++void yaffs_InitialiseTags(yaffs_ExtendedTags * tags);
++void yaffs_DeleteChunk(yaffs_Device * dev, int chunkId, int markNAND, int lyn);
++int yaffs_CheckFF(__u8 * buffer, int nBytes);
++void yaffs_HandleChunkError(yaffs_Device *dev, yaffs_BlockInfo *bi);
++
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,241 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++const char *yaffs_mtdif_c_version =
++ "$Id: yaffs_mtdif.c,v 1.19 2007-02-14 01:09:06 wookey Exp $";
++
++#include "yportenv.h"
++
++
++#include "yaffs_mtdif.h"
++
++#include "linux/mtd/mtd.h"
++#include "linux/types.h"
++#include "linux/time.h"
++#include "linux/mtd/nand.h"
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,18))
++static struct nand_oobinfo yaffs_oobinfo = {
++ .useecc = 1,
++ .eccbytes = 6,
++ .eccpos = {8, 9, 10, 13, 14, 15}
++};
++
++static struct nand_oobinfo yaffs_noeccinfo = {
++ .useecc = 0,
++};
++#endif
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++static inline void translate_spare2oob(const yaffs_Spare *spare, __u8 *oob)
++{
++ oob[0] = spare->tagByte0;
++ oob[1] = spare->tagByte1;
++ oob[2] = spare->tagByte2;
++ oob[3] = spare->tagByte3;
++ oob[4] = spare->tagByte4;
++ oob[5] = spare->tagByte5 & 0x3f;
++ oob[5] |= spare->blockStatus == 'Y' ? 0: 0x80;
++ oob[5] |= spare->pageStatus == 0 ? 0: 0x40;
++ oob[6] = spare->tagByte6;
++ oob[7] = spare->tagByte7;
++}
++
++static inline void translate_oob2spare(yaffs_Spare *spare, __u8 *oob)
++{
++ struct yaffs_NANDSpare *nspare = (struct yaffs_NANDSpare *)spare;
++ spare->tagByte0 = oob[0];
++ spare->tagByte1 = oob[1];
++ spare->tagByte2 = oob[2];
++ spare->tagByte3 = oob[3];
++ spare->tagByte4 = oob[4];
++ spare->tagByte5 = oob[5] == 0xff ? 0xff : oob[5] & 0x3f;
++ spare->blockStatus = oob[5] & 0x80 ? 0xff : 'Y';
++ spare->pageStatus = oob[5] & 0x40 ? 0xff : 0;
++ spare->ecc1[0] = spare->ecc1[1] = spare->ecc1[2] = 0xff;
++ spare->tagByte6 = oob[6];
++ spare->tagByte7 = oob[7];
++ spare->ecc2[0] = spare->ecc2[1] = spare->ecc2[2] = 0xff;
++
++ nspare->eccres1 = nspare->eccres2 = 0; /* FIXME */
++}
++#endif
++
++int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND,
++ const __u8 * data, const yaffs_Spare * spare)
++{
++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ struct mtd_oob_ops ops;
++#endif
++ size_t dummy;
++ int retval = 0;
++
++ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ __u8 spareAsBytes[8]; /* OOB */
++
++ if (data && !spare)
++ retval = mtd->write(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data);
++ else if (spare) {
++ if (dev->useNANDECC) {
++ translate_spare2oob(spare, spareAsBytes);
++ ops.mode = MTD_OOB_AUTO;
++ ops.ooblen = 8; /* temp hack */
++ } else {
++ ops.mode = MTD_OOB_RAW;
++ ops.ooblen = YAFFS_BYTES_PER_SPARE;
++ }
++ ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen;
++ ops.datbuf = (u8 *)data;
++ ops.ooboffs = 0;
++ ops.oobbuf = spareAsBytes;
++ retval = mtd->write_oob(mtd, addr, &ops);
++ }
++#else
++ __u8 *spareAsBytes = (__u8 *) spare;
++
++ if (data && spare) {
++ if (dev->useNANDECC)
++ retval =
++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data, spareAsBytes,
++ &yaffs_oobinfo);
++ else
++ retval =
++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data, spareAsBytes,
++ &yaffs_noeccinfo);
++ } else {
++ if (data)
++ retval =
++ mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy,
++ data);
++ if (spare)
++ retval =
++ mtd->write_oob(mtd, addr, YAFFS_BYTES_PER_SPARE,
++ &dummy, spareAsBytes);
++ }
++#endif
++
++ if (retval == 0)
++ return YAFFS_OK;
++ else
++ return YAFFS_FAIL;
++}
++
++int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data,
++ yaffs_Spare * spare)
++{
++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ struct mtd_oob_ops ops;
++#endif
++ size_t dummy;
++ int retval = 0;
++
++ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ __u8 spareAsBytes[8]; /* OOB */
++
++ if (data && !spare)
++ retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data);
++ else if (spare) {
++ if (dev->useNANDECC) {
++ ops.mode = MTD_OOB_AUTO;
++ ops.ooblen = 8; /* temp hack */
++ } else {
++ ops.mode = MTD_OOB_RAW;
++ ops.ooblen = YAFFS_BYTES_PER_SPARE;
++ }
++ ops.len = data ? dev->nDataBytesPerChunk : ops.ooblen;
++ ops.datbuf = data;
++ ops.ooboffs = 0;
++ ops.oobbuf = spareAsBytes;
++ retval = mtd->read_oob(mtd, addr, &ops);
++ if (dev->useNANDECC)
++ translate_oob2spare(spare, spareAsBytes);
++ }
++#else
++ __u8 *spareAsBytes = (__u8 *) spare;
++
++ if (data && spare) {
++ if (dev->useNANDECC) {
++ /* Careful, this call adds 2 ints */
++ /* to the end of the spare data. Calling function */
++ /* should allocate enough memory for spare, */
++ /* i.e. [YAFFS_BYTES_PER_SPARE+2*sizeof(int)]. */
++ retval =
++ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data, spareAsBytes,
++ &yaffs_oobinfo);
++ } else {
++ retval =
++ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data, spareAsBytes,
++ &yaffs_noeccinfo);
++ }
++ } else {
++ if (data)
++ retval =
++ mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
++ data);
++ if (spare)
++ retval =
++ mtd->read_oob(mtd, addr, YAFFS_BYTES_PER_SPARE,
++ &dummy, spareAsBytes);
++ }
++#endif
++
++ if (retval == 0)
++ return YAFFS_OK;
++ else
++ return YAFFS_FAIL;
++}
++
++int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber)
++{
++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++ __u32 addr =
++ ((loff_t) blockNumber) * dev->nDataBytesPerChunk
++ * dev->nChunksPerBlock;
++ struct erase_info ei;
++ int retval = 0;
++
++ ei.mtd = mtd;
++ ei.addr = addr;
++ ei.len = dev->nDataBytesPerChunk * dev->nChunksPerBlock;
++ ei.time = 1000;
++ ei.retries = 2;
++ ei.callback = NULL;
++ ei.priv = (u_long) dev;
++
++ /* Todo finish off the ei if required */
++
++ sema_init(&dev->sem, 0);
++
++ retval = mtd->erase(mtd, &ei);
++
++ if (retval == 0)
++ return YAFFS_OK;
++ else
++ return YAFFS_FAIL;
++}
++
++int nandmtd_InitialiseNAND(yaffs_Device * dev)
++{
++ return YAFFS_OK;
++}
++
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,27 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_MTDIF_H__
++#define __YAFFS_MTDIF_H__
++
++#include "yaffs_guts.h"
++
++int nandmtd_WriteChunkToNAND(yaffs_Device * dev, int chunkInNAND,
++ const __u8 * data, const yaffs_Spare * spare);
++int nandmtd_ReadChunkFromNAND(yaffs_Device * dev, int chunkInNAND, __u8 * data,
++ yaffs_Spare * spare);
++int nandmtd_EraseBlockInNAND(yaffs_Device * dev, int blockNumber);
++int nandmtd_InitialiseNAND(yaffs_Device * dev);
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif1-compat.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif1-compat.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,434 @@
++From ian@brightstareng.com Fri May 18 15:06:49 2007
++From ian@brightstareng.com Fri May 18 15:08:21 2007
++Received: from 206.173.66.57.ptr.us.xo.net ([206.173.66.57] helo=zebra.brightstareng.com)
++ by apollo.linkchoose.co.uk with esmtp (Exim 4.60)
++ (envelope-from <ian@brightstareng.com>)
++ id 1Hp380-00011e-T6
++ for david.goodenough@linkchoose.co.uk; Fri, 18 May 2007 15:08:21 +0100
++Received: from localhost (localhost.localdomain [127.0.0.1])
++ by zebra.brightstareng.com (Postfix) with ESMTP
++ id 4819F28C004; Fri, 18 May 2007 10:07:49 -0400 (EDT)
++Received: from zebra.brightstareng.com ([127.0.0.1])
++ by localhost (zebra [127.0.0.1]) (amavisd-new, port 10024) with ESMTP
++ id 05328-06; Fri, 18 May 2007 10:07:16 -0400 (EDT)
++Received: from pippin (unknown [192.168.1.25])
++ by zebra.brightstareng.com (Postfix) with ESMTP
++ id 8BEF528C1BC; Fri, 18 May 2007 10:06:53 -0400 (EDT)
++From: Ian McDonnell <ian@brightstareng.com>
++To: David Goodenough <david.goodenough@linkchoose.co.uk>
++Subject: Re: something tested this time -- yaffs_mtdif1-compat.c
++Date: Fri, 18 May 2007 10:06:49 -0400
++User-Agent: KMail/1.9.1
++References: <200705142207.06909.ian@brightstareng.com> <200705171131.53536.ian@brightstareng.com> <200705181334.32166.david.goodenough@linkchoose.co.uk>
++In-Reply-To: <200705181334.32166.david.goodenough@linkchoose.co.uk>
++Cc: Andrea Conti <alyf@alyf.net>,
++ Charles Manning <manningc2@actrix.gen.nz>
++MIME-Version: 1.0
++Content-Type: Multipart/Mixed;
++ boundary="Boundary-00=_5LbTGmt62YoutxM"
++Message-Id: <200705181006.49860.ian@brightstareng.com>
++X-Virus-Scanned: by amavisd-new at brightstareng.com
++Status: R
++X-Status: NT
++X-KMail-EncryptionState:
++X-KMail-SignatureState:
++X-KMail-MDN-Sent:
++
++--Boundary-00=_5LbTGmt62YoutxM
++Content-Type: text/plain;
++ charset="iso-8859-15"
++Content-Transfer-Encoding: 7bit
++Content-Disposition: inline
++
++David, Andrea,
++
++On Friday 18 May 2007 08:34, you wrote:
++> Yea team. With this fix in place (I put it in the wrong place
++> at first) I can now mount and ls the Yaffs partition without
++> an error messages!
++
++Good news!
++
++Attached is a newer yaffs_mtdif1.c with a bandaid to help the
++2.6.18 and 2.6.19 versions of MTD not trip on the oob read.
++See the LINUX_VERSION_CODE conditional in
++nandmtd1_ReadChunkWithTagsFromNAND.
++
++-imcd
++
++--Boundary-00=_5LbTGmt62YoutxM
++Content-Type: text/x-csrc;
++ charset="iso-8859-15";
++ name="yaffs_mtdif1.c"
++Content-Transfer-Encoding: 7bit
++Content-Disposition: attachment;
++ filename="yaffs_mtdif1.c"
++
++/*
++ * YAFFS: Yet another FFS. A NAND-flash specific file system.
++ * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND.
++ *
++ * Copyright (C) 2002 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/*
++ * This module provides the interface between yaffs_nand.c and the
++ * MTD API. This version is used when the MTD interface supports the
++ * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17,
++ * and we have small-page NAND device.
++ *
++ * These functions are invoked via function pointers in yaffs_nand.c.
++ * This replaces functionality provided by functions in yaffs_mtdif.c
++ * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are
++ * called in yaffs_mtdif.c when the function pointers are NULL.
++ * We assume the MTD layer is performing ECC (useNANDECC is true).
++ */
++
++#include "yportenv.h"
++#include "yaffs_guts.h"
++#include "yaffs_packedtags1.h"
++#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC
++
++#include "linux/kernel.h"
++#include "linux/version.h"
++#include "linux/types.h"
++#include "linux/mtd/mtd.h"
++
++/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++
++const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.3 2007/05/15 20:16:11 ian Exp $";
++
++#ifndef CONFIG_YAFFS_9BYTE_TAGS
++# define YTAG1_SIZE 8
++#else
++# define YTAG1_SIZE 9
++#endif
++
++#if 0
++/* Use the following nand_ecclayout with MTD when using
++ * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout.
++ * If you have existing Yaffs images and the byte order differs from this,
++ * adjust 'oobfree' to match your existing Yaffs data.
++ *
++ * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the
++ * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to
++ * the 9th byte.
++ *
++ * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5
++ * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P
++ * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus
++ * byte and B is the small-page bad-block indicator byte.
++ */
++static struct nand_ecclayout nand_oob_16 = {
++ .eccbytes = 6,
++ .eccpos = { 8, 9, 10, 13, 14, 15 },
++ .oobavail = 9,
++ .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
++};
++#endif
++
++/* Write a chunk (page) of data to NAND.
++ *
++ * Caller always provides ExtendedTags data which are converted to a more
++ * compact (packed) form for storage in NAND. A mini-ECC runs over the
++ * contents of the tags meta-data; used to valid the tags when read.
++ *
++ * - Pack ExtendedTags to PackedTags1 form
++ * - Compute mini-ECC for PackedTags1
++ * - Write data and packed tags to NAND.
++ *
++ * Note: Due to the use of the PackedTags1 meta-data which does not include
++ * a full sequence number (as found in the larger PackedTags2 form) it is
++ * necessary for Yaffs to re-write a chunk/page (just once) to mark it as
++ * discarded and dirty. This is not ideal: newer NAND parts are supposed
++ * to be written just once. When Yaffs performs this operation, this
++ * function is called with a NULL data pointer -- calling MTD write_oob
++ * without data is valid usage (2.6.17).
++ *
++ * Any underlying MTD error results in YAFFS_FAIL.
++ * Returns YAFFS_OK or YAFFS_FAIL.
++ */
++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
++ int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags)
++{
++ struct mtd_info * mtd = dev->genericDevice;
++ int chunkBytes = dev->nDataBytesPerChunk;
++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
++ struct mtd_oob_ops ops;
++ yaffs_PackedTags1 pt1;
++ int retval;
++
++ /* we assume that PackedTags1 and yaffs_Tags are compatible */
++ compile_time_assertion(sizeof(yaffs_PackedTags1) == 12);
++ compile_time_assertion(sizeof(yaffs_Tags) == 8);
++
++ yaffs_PackTags1(&pt1, etags);
++ yaffs_CalcTagsECC((yaffs_Tags *)&pt1);
++
++ /* When deleting a chunk, the upper layer provides only skeletal
++ * etags, one with chunkDeleted set. However, we need to update the
++ * tags, not erase them completely. So we use the NAND write property
++ * that only zeroed-bits stick and set tag bytes to all-ones and
++ * zero just the (not) deleted bit.
++ */
++#ifndef CONFIG_YAFFS_9BYTE_TAGS
++ if (etags->chunkDeleted) {
++ memset(&pt1, 0xff, 8);
++ /* clear delete status bit to indicate deleted */
++ pt1.deleted = 0;
++ }
++#else
++ ((__u8 *)&pt1)[8] = 0xff;
++ if (etags->chunkDeleted) {
++ memset(&pt1, 0xff, 8);
++ /* zero pageStatus byte to indicate deleted */
++ ((__u8 *)&pt1)[8] = 0;
++ }
++#endif
++
++ memset(&ops, 0, sizeof(ops));
++ ops.mode = MTD_OOB_AUTO;
++ ops.len = (data) ? chunkBytes : 0;
++ ops.ooblen = YTAG1_SIZE;
++ ops.datbuf = (__u8 *)data;
++ ops.oobbuf = (__u8 *)&pt1;
++
++ retval = mtd->write_oob(mtd, addr, &ops);
++ if (retval) {
++ yaffs_trace(YAFFS_TRACE_MTD,
++ "write_oob failed, chunk %d, mtd error %d\n",
++ chunkInNAND, retval);
++ }
++ return retval ? YAFFS_FAIL : YAFFS_OK;
++}
++
++/* Return with empty ExtendedTags but add eccResult.
++ */
++static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval)
++{
++ if (etags) {
++ memset(etags, 0, sizeof(*etags));
++ etags->eccResult = eccResult;
++ }
++ return retval;
++}
++
++/* Read a chunk (page) from NAND.
++ *
++ * Caller expects ExtendedTags data to be usable even on error; that is,
++ * all members except eccResult and blockBad are zeroed.
++ *
++ * - Check ECC results for data (if applicable)
++ * - Check for blank/erased block (return empty ExtendedTags if blank)
++ * - Check the PackedTags1 mini-ECC (correct if necessary/possible)
++ * - Convert PackedTags1 to ExtendedTags
++ * - Update eccResult and blockBad members to refect state.
++ *
++ * Returns YAFFS_OK or YAFFS_FAIL.
++ */
++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
++ int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags)
++{
++ struct mtd_info * mtd = dev->genericDevice;
++ int chunkBytes = dev->nDataBytesPerChunk;
++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
++ int eccres = YAFFS_ECC_RESULT_NO_ERROR;
++ struct mtd_oob_ops ops;
++ yaffs_PackedTags1 pt1;
++ int retval;
++ int deleted;
++
++ memset(&ops, 0, sizeof(ops));
++ ops.mode = MTD_OOB_AUTO;
++ ops.len = (data) ? chunkBytes : 0;
++ ops.ooblen = YTAG1_SIZE;
++ ops.datbuf = data;
++ ops.oobbuf = (__u8 *)&pt1;
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
++ /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
++ * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
++ */
++ ops.len = (ops.datbuf) ? ops.len : ops.ooblen;
++#endif
++ /* Read page and oob using MTD.
++ * Check status and determine ECC result.
++ */
++ retval = mtd->read_oob(mtd, addr, &ops);
++ if (retval) {
++ yaffs_trace(YAFFS_TRACE_MTD,
++ "read_oob failed, chunk %d, mtd error %d\n",
++ chunkInNAND, retval);
++ }
++
++ switch (retval) {
++ case 0:
++ /* no error */
++ break;
++
++ case -EUCLEAN:
++ /* MTD's ECC fixed the data */
++ eccres = YAFFS_ECC_RESULT_FIXED;
++ dev->eccFixed++;
++ break;
++
++ case -EBADMSG:
++ /* MTD's ECC could not fix the data */
++ dev->eccUnfixed++;
++ /* fall into... */
++ default:
++ rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
++ etags->blockBad = (mtd->block_isbad)(mtd, addr);
++ return YAFFS_FAIL;
++ }
++
++ /* Check for a blank/erased chunk.
++ */
++ if (yaffs_CheckFF((__u8 *)&pt1, 8)) {
++ /* when blank, upper layers want eccResult to be <= NO_ERROR */
++ return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK);
++ }
++
++#ifndef CONFIG_YAFFS_9BYTE_TAGS
++ /* Read deleted status (bit) then return it to it's non-deleted
++ * state before performing tags mini-ECC check. pt1.deleted is
++ * inverted.
++ */
++ deleted = !pt1.deleted;
++ pt1.deleted = 1;
++#else
++ (void) deleted; /* not used */
++#endif
++
++ /* Check the packed tags mini-ECC and correct if necessary/possible.
++ */
++ retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1);
++ switch (retval) {
++ case 0:
++ /* no tags error, use MTD result */
++ break;
++ case 1:
++ /* recovered tags-ECC error */
++ dev->tagsEccFixed++;
++ eccres = YAFFS_ECC_RESULT_FIXED;
++ break;
++ default:
++ /* unrecovered tags-ECC error */
++ dev->tagsEccUnfixed++;
++ return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL);
++ }
++
++ /* Unpack the tags to extended form and set ECC result.
++ * [set shouldBeFF just to keep yaffs_UnpackTags1 happy]
++ */
++ pt1.shouldBeFF = 0xFFFFFFFF;
++ yaffs_UnpackTags1(etags, &pt1);
++ etags->eccResult = eccres;
++
++ /* Set deleted state.
++ */
++#ifndef CONFIG_YAFFS_9BYTE_TAGS
++ etags->chunkDeleted = deleted;
++#else
++ etags->chunkDeleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7);
++#endif
++ return YAFFS_OK;
++}
++
++/* Mark a block bad.
++ *
++ * This is a persistant state.
++ * Use of this function should be rare.
++ *
++ * Returns YAFFS_OK or YAFFS_FAIL.
++ */
++int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
++{
++ struct mtd_info * mtd = dev->genericDevice;
++ int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
++ int retval;
++
++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo);
++
++ retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
++ return (retval) ? YAFFS_FAIL : YAFFS_OK;
++}
++
++/* Check any MTD prerequists.
++ *
++ * Returns YAFFS_OK or YAFFS_FAIL.
++ */
++static int nandmtd1_TestPrerequists(struct mtd_info * mtd)
++{
++ /* 2.6.18 has mtd->ecclayout->oobavail */
++ /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
++ int oobavail = mtd->ecclayout->oobavail;
++
++ if (oobavail < YTAG1_SIZE) {
++ yaffs_trace(YAFFS_TRACE_ERROR,
++ "mtd device has only %d bytes for tags, need %d",
++ oobavail, YTAG1_SIZE);
++ return YAFFS_FAIL;
++ }
++ return YAFFS_OK;
++}
++
++/* Query for the current state of a specific block.
++ *
++ * Examine the tags of the first chunk of the block and return the state:
++ * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad
++ * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use
++ * - YAFFS_BLOCK_STATE_EMPTY, the block is clean
++ *
++ * Always returns YAFFS_OK.
++ */
++int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
++ yaffs_BlockState * pState, int *pSequenceNumber)
++{
++ struct mtd_info * mtd = dev->genericDevice;
++ int chunkNo = blockNo * dev->nChunksPerBlock;
++ yaffs_ExtendedTags etags;
++ int state = YAFFS_BLOCK_STATE_DEAD;
++ int seqnum = 0;
++ int retval;
++
++ /* We don't yet have a good place to test for MTD config prerequists.
++ * Do it here as we are called during the initial scan.
++ */
++ if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) {
++ return YAFFS_FAIL;
++ }
++
++ retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
++ if (etags.blockBad) {
++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
++ "block %d is marked bad", blockNo);
++ state = YAFFS_BLOCK_STATE_DEAD;
++ }
++ else if (etags.chunkUsed) {
++ state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
++ seqnum = etags.sequenceNumber;
++ }
++ else {
++ state = YAFFS_BLOCK_STATE_EMPTY;
++ }
++
++ *pState = state;
++ *pSequenceNumber = seqnum;
++
++ /* query always succeeds */
++ return YAFFS_OK;
++}
++
++#endif /*KERNEL_VERSION*/
++
++--Boundary-00=_5LbTGmt62YoutxM--
++
++
++
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif1.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif1.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,363 @@
++/*
++ * YAFFS: Yet another FFS. A NAND-flash specific file system.
++ * yaffs_mtdif1.c NAND mtd interface functions for small-page NAND.
++ *
++ * Copyright (C) 2002 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/*
++ * This module provides the interface between yaffs_nand.c and the
++ * MTD API. This version is used when the MTD interface supports the
++ * 'mtd_oob_ops' style calls to read_oob and write_oob, circa 2.6.17,
++ * and we have small-page NAND device.
++ *
++ * These functions are invoked via function pointers in yaffs_nand.c.
++ * This replaces functionality provided by functions in yaffs_mtdif.c
++ * and the yaffs_TagsCompatability functions in yaffs_tagscompat.c that are
++ * called in yaffs_mtdif.c when the function pointers are NULL.
++ * We assume the MTD layer is performing ECC (useNANDECC is true).
++ */
++
++#include "yportenv.h"
++#include "yaffs_guts.h"
++#include "yaffs_packedtags1.h"
++#include "yaffs_tagscompat.h" // for yaffs_CalcTagsECC
++
++#include "linux/kernel.h"
++#include "linux/version.h"
++#include "linux/types.h"
++#include "linux/mtd/mtd.h"
++
++/* Don't compile this module if we don't have MTD's mtd_oob_ops interface */
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++
++const char *yaffs_mtdif1_c_version = "$Id: yaffs_mtdif1.c,v 1.3 2007/05/15 20:16:11 ian Exp $";
++
++#ifndef CONFIG_YAFFS_9BYTE_TAGS
++# define YTAG1_SIZE 8
++#else
++# define YTAG1_SIZE 9
++#endif
++
++#if 0
++/* Use the following nand_ecclayout with MTD when using
++ * CONFIG_YAFFS_9BYTE_TAGS and the older on-NAND tags layout.
++ * If you have existing Yaffs images and the byte order differs from this,
++ * adjust 'oobfree' to match your existing Yaffs data.
++ *
++ * This nand_ecclayout scatters/gathers to/from the old-yaffs layout with the
++ * pageStatus byte (at NAND spare offset 4) scattered/gathered from/to
++ * the 9th byte.
++ *
++ * Old-style on-NAND format: T0,T1,T2,T3,P,B,T4,T5,E0,E1,E2,T6,T7,E3,E4,E5
++ * We have/need PackedTags1 plus pageStatus: T0,T1,T2,T3,T4,T5,T6,T7,P
++ * where Tn are the tag bytes, En are MTD's ECC bytes, P is the pageStatus
++ * byte and B is the small-page bad-block indicator byte.
++ */
++static struct nand_ecclayout nand_oob_16 = {
++ .eccbytes = 6,
++ .eccpos = { 8, 9, 10, 13, 14, 15 },
++ .oobavail = 9,
++ .oobfree = { { 0, 4 }, { 6, 2 }, { 11, 2 }, { 4, 1 } }
++};
++#endif
++
++/* Write a chunk (page) of data to NAND.
++ *
++ * Caller always provides ExtendedTags data which are converted to a more
++ * compact (packed) form for storage in NAND. A mini-ECC runs over the
++ * contents of the tags meta-data; used to valid the tags when read.
++ *
++ * - Pack ExtendedTags to PackedTags1 form
++ * - Compute mini-ECC for PackedTags1
++ * - Write data and packed tags to NAND.
++ *
++ * Note: Due to the use of the PackedTags1 meta-data which does not include
++ * a full sequence number (as found in the larger PackedTags2 form) it is
++ * necessary for Yaffs to re-write a chunk/page (just once) to mark it as
++ * discarded and dirty. This is not ideal: newer NAND parts are supposed
++ * to be written just once. When Yaffs performs this operation, this
++ * function is called with a NULL data pointer -- calling MTD write_oob
++ * without data is valid usage (2.6.17).
++ *
++ * Any underlying MTD error results in YAFFS_FAIL.
++ * Returns YAFFS_OK or YAFFS_FAIL.
++ */
++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device *dev,
++ int chunkInNAND, const __u8 * data, const yaffs_ExtendedTags * etags)
++{
++ struct mtd_info * mtd = dev->genericDevice;
++ int chunkBytes = dev->nDataBytesPerChunk;
++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
++ struct mtd_oob_ops ops;
++ yaffs_PackedTags1 pt1;
++ int retval;
++
++ /* we assume that PackedTags1 and yaffs_Tags are compatible */
++ compile_time_assertion(sizeof(yaffs_PackedTags1) == 12);
++ compile_time_assertion(sizeof(yaffs_Tags) == 8);
++
++ dev->nPageWrites++;
++
++ yaffs_PackTags1(&pt1, etags);
++ yaffs_CalcTagsECC((yaffs_Tags *)&pt1);
++
++ /* When deleting a chunk, the upper layer provides only skeletal
++ * etags, one with chunkDeleted set. However, we need to update the
++ * tags, not erase them completely. So we use the NAND write property
++ * that only zeroed-bits stick and set tag bytes to all-ones and
++ * zero just the (not) deleted bit.
++ */
++#ifndef CONFIG_YAFFS_9BYTE_TAGS
++ if (etags->chunkDeleted) {
++ memset(&pt1, 0xff, 8);
++ /* clear delete status bit to indicate deleted */
++ pt1.deleted = 0;
++ }
++#else
++ ((__u8 *)&pt1)[8] = 0xff;
++ if (etags->chunkDeleted) {
++ memset(&pt1, 0xff, 8);
++ /* zero pageStatus byte to indicate deleted */
++ ((__u8 *)&pt1)[8] = 0;
++ }
++#endif
++
++ memset(&ops, 0, sizeof(ops));
++ ops.mode = MTD_OOB_AUTO;
++ ops.len = (data) ? chunkBytes : 0;
++ ops.ooblen = YTAG1_SIZE;
++ ops.datbuf = (__u8 *)data;
++ ops.oobbuf = (__u8 *)&pt1;
++
++ retval = mtd->write_oob(mtd, addr, &ops);
++ if (retval) {
++ yaffs_trace(YAFFS_TRACE_MTD,
++ "write_oob failed, chunk %d, mtd error %d\n",
++ chunkInNAND, retval);
++ }
++ return retval ? YAFFS_FAIL : YAFFS_OK;
++}
++
++/* Return with empty ExtendedTags but add eccResult.
++ */
++static int rettags(yaffs_ExtendedTags * etags, int eccResult, int retval)
++{
++ if (etags) {
++ memset(etags, 0, sizeof(*etags));
++ etags->eccResult = eccResult;
++ }
++ return retval;
++}
++
++/* Read a chunk (page) from NAND.
++ *
++ * Caller expects ExtendedTags data to be usable even on error; that is,
++ * all members except eccResult and blockBad are zeroed.
++ *
++ * - Check ECC results for data (if applicable)
++ * - Check for blank/erased block (return empty ExtendedTags if blank)
++ * - Check the PackedTags1 mini-ECC (correct if necessary/possible)
++ * - Convert PackedTags1 to ExtendedTags
++ * - Update eccResult and blockBad members to refect state.
++ *
++ * Returns YAFFS_OK or YAFFS_FAIL.
++ */
++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device *dev,
++ int chunkInNAND, __u8 * data, yaffs_ExtendedTags * etags)
++{
++ struct mtd_info * mtd = dev->genericDevice;
++ int chunkBytes = dev->nDataBytesPerChunk;
++ loff_t addr = ((loff_t)chunkInNAND) * chunkBytes;
++ int eccres = YAFFS_ECC_RESULT_NO_ERROR;
++ struct mtd_oob_ops ops;
++ yaffs_PackedTags1 pt1;
++ int retval;
++ int deleted;
++
++ dev->nPageReads++;
++
++ memset(&ops, 0, sizeof(ops));
++ ops.mode = MTD_OOB_AUTO;
++ ops.len = (data) ? chunkBytes : 0;
++ ops.ooblen = YTAG1_SIZE;
++ ops.datbuf = data;
++ ops.oobbuf = (__u8 *)&pt1;
++
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,20))
++ /* In MTD 2.6.18 to 2.6.19 nand_base.c:nand_do_read_oob() has a bug;
++ * help it out with ops.len = ops.ooblen when ops.datbuf == NULL.
++ */
++ ops.len = (ops.datbuf) ? ops.len : ops.ooblen;
++#endif
++ /* Read page and oob using MTD.
++ * Check status and determine ECC result.
++ */
++ retval = mtd->read_oob(mtd, addr, &ops);
++ if (retval) {
++ yaffs_trace(YAFFS_TRACE_MTD,
++ "read_oob failed, chunk %d, mtd error %d\n",
++ chunkInNAND, retval);
++ }
++
++ switch (retval) {
++ case 0:
++ /* no error */
++ break;
++
++ case -EUCLEAN:
++ /* MTD's ECC fixed the data */
++ eccres = YAFFS_ECC_RESULT_FIXED;
++ dev->eccFixed++;
++ break;
++
++ case -EBADMSG:
++ /* MTD's ECC could not fix the data */
++ dev->eccUnfixed++;
++ /* fall into... */
++ default:
++ rettags(etags, YAFFS_ECC_RESULT_UNFIXED, 0);
++ etags->blockBad = (mtd->block_isbad)(mtd, addr);
++ return YAFFS_FAIL;
++ }
++
++ /* Check for a blank/erased chunk.
++ */
++ if (yaffs_CheckFF((__u8 *)&pt1, 8)) {
++ /* when blank, upper layers want eccResult to be <= NO_ERROR */
++ return rettags(etags, YAFFS_ECC_RESULT_NO_ERROR, YAFFS_OK);
++ }
++
++#ifndef CONFIG_YAFFS_9BYTE_TAGS
++ /* Read deleted status (bit) then return it to it's non-deleted
++ * state before performing tags mini-ECC check. pt1.deleted is
++ * inverted.
++ */
++ deleted = !pt1.deleted;
++ pt1.deleted = 1;
++#else
++ deleted = (yaffs_CountBits(((__u8 *)&pt1)[8]) < 7);
++#endif
++
++ /* Check the packed tags mini-ECC and correct if necessary/possible.
++ */
++ retval = yaffs_CheckECCOnTags((yaffs_Tags *)&pt1);
++ switch (retval) {
++ case 0:
++ /* no tags error, use MTD result */
++ break;
++ case 1:
++ /* recovered tags-ECC error */
++ dev->tagsEccFixed++;
++ if (eccres == YAFFS_ECC_RESULT_NO_ERROR)
++ eccres = YAFFS_ECC_RESULT_FIXED;
++ break;
++ default:
++ /* unrecovered tags-ECC error */
++ dev->tagsEccUnfixed++;
++ return rettags(etags, YAFFS_ECC_RESULT_UNFIXED, YAFFS_FAIL);
++ }
++
++ /* Unpack the tags to extended form and set ECC result.
++ * [set shouldBeFF just to keep yaffs_UnpackTags1 happy]
++ */
++ pt1.shouldBeFF = 0xFFFFFFFF;
++ yaffs_UnpackTags1(etags, &pt1);
++ etags->eccResult = eccres;
++
++ /* Set deleted state */
++ etags->chunkDeleted = deleted;
++ return YAFFS_OK;
++}
++
++/* Mark a block bad.
++ *
++ * This is a persistant state.
++ * Use of this function should be rare.
++ *
++ * Returns YAFFS_OK or YAFFS_FAIL.
++ */
++int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
++{
++ struct mtd_info * mtd = dev->genericDevice;
++ int blocksize = dev->nChunksPerBlock * dev->nDataBytesPerChunk;
++ int retval;
++
++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS, "marking block %d bad", blockNo);
++
++ retval = mtd->block_markbad(mtd, (loff_t)blocksize * blockNo);
++ return (retval) ? YAFFS_FAIL : YAFFS_OK;
++}
++
++/* Check any MTD prerequists.
++ *
++ * Returns YAFFS_OK or YAFFS_FAIL.
++ */
++static int nandmtd1_TestPrerequists(struct mtd_info * mtd)
++{
++ /* 2.6.18 has mtd->ecclayout->oobavail */
++ /* 2.6.21 has mtd->ecclayout->oobavail and mtd->oobavail */
++ int oobavail = mtd->ecclayout->oobavail;
++
++ if (oobavail < YTAG1_SIZE) {
++ yaffs_trace(YAFFS_TRACE_ERROR,
++ "mtd device has only %d bytes for tags, need %d\n",
++ oobavail, YTAG1_SIZE);
++ return YAFFS_FAIL;
++ }
++ return YAFFS_OK;
++}
++
++/* Query for the current state of a specific block.
++ *
++ * Examine the tags of the first chunk of the block and return the state:
++ * - YAFFS_BLOCK_STATE_DEAD, the block is marked bad
++ * - YAFFS_BLOCK_STATE_NEEDS_SCANNING, the block is in use
++ * - YAFFS_BLOCK_STATE_EMPTY, the block is clean
++ *
++ * Always returns YAFFS_OK.
++ */
++int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
++ yaffs_BlockState * pState, int *pSequenceNumber)
++{
++ struct mtd_info * mtd = dev->genericDevice;
++ int chunkNo = blockNo * dev->nChunksPerBlock;
++ yaffs_ExtendedTags etags;
++ int state = YAFFS_BLOCK_STATE_DEAD;
++ int seqnum = 0;
++ int retval;
++
++ /* We don't yet have a good place to test for MTD config prerequists.
++ * Do it here as we are called during the initial scan.
++ */
++ if (nandmtd1_TestPrerequists(mtd) != YAFFS_OK) {
++ return YAFFS_FAIL;
++ }
++
++ retval = nandmtd1_ReadChunkWithTagsFromNAND(dev, chunkNo, NULL, &etags);
++ if (etags.blockBad) {
++ yaffs_trace(YAFFS_TRACE_BAD_BLOCKS,
++ "block %d is marked bad", blockNo);
++ state = YAFFS_BLOCK_STATE_DEAD;
++ }
++ else if (etags.chunkUsed) {
++ state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
++ seqnum = etags.sequenceNumber;
++ }
++ else {
++ state = YAFFS_BLOCK_STATE_EMPTY;
++ }
++
++ *pState = state;
++ *pSequenceNumber = seqnum;
++
++ /* query always succeeds */
++ return YAFFS_OK;
++}
++
++#endif /*KERNEL_VERSION*/
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif1.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif1.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,28 @@
++/*
++ * YAFFS: Yet another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_MTDIF1_H__
++#define __YAFFS_MTDIF1_H__
++
++int nandmtd1_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
++ const __u8 * data, const yaffs_ExtendedTags * tags);
++
++int nandmtd1_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
++ __u8 * data, yaffs_ExtendedTags * tags);
++
++int nandmtd1_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
++
++int nandmtd1_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
++ yaffs_BlockState * state, int *sequenceNumber);
++
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif2.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif2.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,232 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++/* mtd interface for YAFFS2 */
++
++const char *yaffs_mtdif2_c_version =
++ "$Id: yaffs_mtdif2.c,v 1.17 2007-02-14 01:09:06 wookey Exp $";
++
++#include "yportenv.h"
++
++
++#include "yaffs_mtdif2.h"
++
++#include "linux/mtd/mtd.h"
++#include "linux/types.h"
++#include "linux/time.h"
++
++#include "yaffs_packedtags2.h"
++
++int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
++ const __u8 * data,
++ const yaffs_ExtendedTags * tags)
++{
++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ struct mtd_oob_ops ops;
++#else
++ size_t dummy;
++#endif
++ int retval = 0;
++
++ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
++
++ yaffs_PackedTags2 pt;
++
++ T(YAFFS_TRACE_MTD,
++ (TSTR
++ ("nandmtd2_WriteChunkWithTagsToNAND chunk %d data %p tags %p"
++ TENDSTR), chunkInNAND, data, tags));
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ if (tags)
++ yaffs_PackTags2(&pt, tags);
++ else
++ BUG(); /* both tags and data should always be present */
++
++ if (data) {
++ ops.mode = MTD_OOB_AUTO;
++ ops.ooblen = sizeof(pt);
++ ops.len = dev->nDataBytesPerChunk;
++ ops.ooboffs = 0;
++ ops.datbuf = (__u8 *)data;
++ ops.oobbuf = (void *)&pt;
++ retval = mtd->write_oob(mtd, addr, &ops);
++ } else
++ BUG(); /* both tags and data should always be present */
++#else
++ if (tags) {
++ yaffs_PackTags2(&pt, tags);
++ }
++
++ if (data && tags) {
++ if (dev->useNANDECC)
++ retval =
++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data, (__u8 *) & pt, NULL);
++ else
++ retval =
++ mtd->write_ecc(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data, (__u8 *) & pt, NULL);
++ } else {
++ if (data)
++ retval =
++ mtd->write(mtd, addr, dev->nDataBytesPerChunk, &dummy,
++ data);
++ if (tags)
++ retval =
++ mtd->write_oob(mtd, addr, mtd->oobsize, &dummy,
++ (__u8 *) & pt);
++
++ }
++#endif
++
++ if (retval == 0)
++ return YAFFS_OK;
++ else
++ return YAFFS_FAIL;
++}
++
++int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
++ __u8 * data, yaffs_ExtendedTags * tags)
++{
++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ struct mtd_oob_ops ops;
++#endif
++ size_t dummy;
++ int retval = 0;
++
++ loff_t addr = ((loff_t) chunkInNAND) * dev->nDataBytesPerChunk;
++
++ yaffs_PackedTags2 pt;
++
++ T(YAFFS_TRACE_MTD,
++ (TSTR
++ ("nandmtd2_ReadChunkWithTagsFromNAND chunk %d data %p tags %p"
++ TENDSTR), chunkInNAND, data, tags));
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,17))
++ if (data && !tags)
++ retval = mtd->read(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data);
++ else if (tags) {
++ ops.mode = MTD_OOB_AUTO;
++ ops.ooblen = sizeof(pt);
++ ops.len = data ? dev->nDataBytesPerChunk : sizeof(pt);
++ ops.ooboffs = 0;
++ ops.datbuf = data;
++ ops.oobbuf = dev->spareBuffer;
++ retval = mtd->read_oob(mtd, addr, &ops);
++ }
++#else
++ if (data && tags) {
++ if (dev->useNANDECC) {
++ retval =
++ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data, dev->spareBuffer,
++ NULL);
++ } else {
++ retval =
++ mtd->read_ecc(mtd, addr, dev->nDataBytesPerChunk,
++ &dummy, data, dev->spareBuffer,
++ NULL);
++ }
++ } else {
++ if (data)
++ retval =
++ mtd->read(mtd, addr, dev->nDataBytesPerChunk, &dummy,
++ data);
++ if (tags)
++ retval =
++ mtd->read_oob(mtd, addr, mtd->oobsize, &dummy,
++ dev->spareBuffer);
++ }
++#endif
++
++ memcpy(&pt, dev->spareBuffer, sizeof(pt));
++
++ if (tags)
++ yaffs_UnpackTags2(tags, &pt);
++
++ if(tags && retval == -EBADMSG && tags->eccResult == YAFFS_ECC_RESULT_NO_ERROR)
++ tags->eccResult = YAFFS_ECC_RESULT_UNFIXED;
++
++ if (retval == 0)
++ return YAFFS_OK;
++ else
++ return YAFFS_FAIL;
++}
++
++int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo)
++{
++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++ int retval;
++ T(YAFFS_TRACE_MTD,
++ (TSTR("nandmtd2_MarkNANDBlockBad %d" TENDSTR), blockNo));
++
++ retval =
++ mtd->block_markbad(mtd,
++ blockNo * dev->nChunksPerBlock *
++ dev->nDataBytesPerChunk);
++
++ if (retval == 0)
++ return YAFFS_OK;
++ else
++ return YAFFS_FAIL;
++
++}
++
++int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
++ yaffs_BlockState * state, int *sequenceNumber)
++{
++ struct mtd_info *mtd = (struct mtd_info *)(dev->genericDevice);
++ int retval;
++
++ T(YAFFS_TRACE_MTD,
++ (TSTR("nandmtd2_QueryNANDBlock %d" TENDSTR), blockNo));
++ retval =
++ mtd->block_isbad(mtd,
++ blockNo * dev->nChunksPerBlock *
++ dev->nDataBytesPerChunk);
++
++ if (retval) {
++ T(YAFFS_TRACE_MTD, (TSTR("block is bad" TENDSTR)));
++
++ *state = YAFFS_BLOCK_STATE_DEAD;
++ *sequenceNumber = 0;
++ } else {
++ yaffs_ExtendedTags t;
++ nandmtd2_ReadChunkWithTagsFromNAND(dev,
++ blockNo *
++ dev->nChunksPerBlock, NULL,
++ &t);
++
++ if (t.chunkUsed) {
++ *sequenceNumber = t.sequenceNumber;
++ *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
++ } else {
++ *sequenceNumber = 0;
++ *state = YAFFS_BLOCK_STATE_EMPTY;
++ }
++ }
++ T(YAFFS_TRACE_MTD,
++ (TSTR("block is bad seq %d state %d" TENDSTR), *sequenceNumber,
++ *state));
++
++ if (retval == 0)
++ return YAFFS_OK;
++ else
++ return YAFFS_FAIL;
++}
++
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif2.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_mtdif2.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,29 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_MTDIF2_H__
++#define __YAFFS_MTDIF2_H__
++
++#include "yaffs_guts.h"
++int nandmtd2_WriteChunkWithTagsToNAND(yaffs_Device * dev, int chunkInNAND,
++ const __u8 * data,
++ const yaffs_ExtendedTags * tags);
++int nandmtd2_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
++ __u8 * data, yaffs_ExtendedTags * tags);
++int nandmtd2_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
++int nandmtd2_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
++ yaffs_BlockState * state, int *sequenceNumber);
++
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_nand.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_nand.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,134 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++const char *yaffs_nand_c_version =
++ "$Id: yaffs_nand.c,v 1.7 2007-02-14 01:09:06 wookey Exp $";
++
++#include "yaffs_nand.h"
++#include "yaffs_tagscompat.h"
++#include "yaffs_tagsvalidity.h"
++
++
++int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
++ __u8 * buffer,
++ yaffs_ExtendedTags * tags)
++{
++ int result;
++ yaffs_ExtendedTags localTags;
++
++ int realignedChunkInNAND = chunkInNAND - dev->chunkOffset;
++
++ /* If there are no tags provided, use local tags to get prioritised gc working */
++ if(!tags)
++ tags = &localTags;
++
++ if (dev->readChunkWithTagsFromNAND)
++ result = dev->readChunkWithTagsFromNAND(dev, realignedChunkInNAND, buffer,
++ tags);
++ else
++ result = yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(dev,
++ realignedChunkInNAND,
++ buffer,
++ tags);
++ if(tags &&
++ tags->eccResult > YAFFS_ECC_RESULT_NO_ERROR){
++
++ yaffs_BlockInfo *bi = yaffs_GetBlockInfo(dev, chunkInNAND/dev->nChunksPerBlock);
++ yaffs_HandleChunkError(dev,bi);
++ }
++
++ return result;
++}
++
++int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev,
++ int chunkInNAND,
++ const __u8 * buffer,
++ yaffs_ExtendedTags * tags)
++{
++ chunkInNAND -= dev->chunkOffset;
++
++
++ if (tags) {
++ tags->sequenceNumber = dev->sequenceNumber;
++ tags->chunkUsed = 1;
++ if (!yaffs_ValidateTags(tags)) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("Writing uninitialised tags" TENDSTR)));
++ YBUG();
++ }
++ T(YAFFS_TRACE_WRITE,
++ (TSTR("Writing chunk %d tags %d %d" TENDSTR), chunkInNAND,
++ tags->objectId, tags->chunkId));
++ } else {
++ T(YAFFS_TRACE_ERROR, (TSTR("Writing with no tags" TENDSTR)));
++ YBUG();
++ }
++
++ if (dev->writeChunkWithTagsToNAND)
++ return dev->writeChunkWithTagsToNAND(dev, chunkInNAND, buffer,
++ tags);
++ else
++ return yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(dev,
++ chunkInNAND,
++ buffer,
++ tags);
++}
++
++int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo)
++{
++ blockNo -= dev->blockOffset;
++
++;
++ if (dev->markNANDBlockBad)
++ return dev->markNANDBlockBad(dev, blockNo);
++ else
++ return yaffs_TagsCompatabilityMarkNANDBlockBad(dev, blockNo);
++}
++
++int yaffs_QueryInitialBlockState(yaffs_Device * dev,
++ int blockNo,
++ yaffs_BlockState * state,
++ unsigned *sequenceNumber)
++{
++ blockNo -= dev->blockOffset;
++
++ if (dev->queryNANDBlock)
++ return dev->queryNANDBlock(dev, blockNo, state, sequenceNumber);
++ else
++ return yaffs_TagsCompatabilityQueryNANDBlock(dev, blockNo,
++ state,
++ sequenceNumber);
++}
++
++
++int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
++ int blockInNAND)
++{
++ int result;
++
++ blockInNAND -= dev->blockOffset;
++
++
++ dev->nBlockErasures++;
++ result = dev->eraseBlockInNAND(dev, blockInNAND);
++
++ return result;
++}
++
++int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev)
++{
++ return dev->initialiseNAND(dev);
++}
++
++
++
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_nand.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_nand.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,44 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_NAND_H__
++#define __YAFFS_NAND_H__
++#include "yaffs_guts.h"
++
++
++
++int yaffs_ReadChunkWithTagsFromNAND(yaffs_Device * dev, int chunkInNAND,
++ __u8 * buffer,
++ yaffs_ExtendedTags * tags);
++
++int yaffs_WriteChunkWithTagsToNAND(yaffs_Device * dev,
++ int chunkInNAND,
++ const __u8 * buffer,
++ yaffs_ExtendedTags * tags);
++
++int yaffs_MarkBlockBad(yaffs_Device * dev, int blockNo);
++
++int yaffs_QueryInitialBlockState(yaffs_Device * dev,
++ int blockNo,
++ yaffs_BlockState * state,
++ unsigned *sequenceNumber);
++
++int yaffs_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
++ int blockInNAND);
++
++int yaffs_InitialiseNAND(struct yaffs_DeviceStruct *dev);
++
++#endif
++
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_nandemul2k.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_nandemul2k.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,39 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++/* Interface to emulated NAND functions (2k page size) */
++
++#ifndef __YAFFS_NANDEMUL2K_H__
++#define __YAFFS_NANDEMUL2K_H__
++
++#include "yaffs_guts.h"
++
++int nandemul2k_WriteChunkWithTagsToNAND(struct yaffs_DeviceStruct *dev,
++ int chunkInNAND, const __u8 * data,
++ yaffs_ExtendedTags * tags);
++int nandemul2k_ReadChunkWithTagsFromNAND(struct yaffs_DeviceStruct *dev,
++ int chunkInNAND, __u8 * data,
++ yaffs_ExtendedTags * tags);
++int nandemul2k_MarkNANDBlockBad(struct yaffs_DeviceStruct *dev, int blockNo);
++int nandemul2k_QueryNANDBlock(struct yaffs_DeviceStruct *dev, int blockNo,
++ yaffs_BlockState * state, int *sequenceNumber);
++int nandemul2k_EraseBlockInNAND(struct yaffs_DeviceStruct *dev,
++ int blockInNAND);
++int nandemul2k_InitialiseNAND(struct yaffs_DeviceStruct *dev);
++int nandemul2k_GetBytesPerChunk(void);
++int nandemul2k_GetChunksPerBlock(void);
++int nandemul2k_GetNumberOfBlocks(void);
++
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_packedtags1.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_packedtags1.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,52 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include "yaffs_packedtags1.h"
++#include "yportenv.h"
++
++void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t)
++{
++ pt->chunkId = t->chunkId;
++ pt->serialNumber = t->serialNumber;
++ pt->byteCount = t->byteCount;
++ pt->objectId = t->objectId;
++ pt->ecc = 0;
++ pt->deleted = (t->chunkDeleted) ? 0 : 1;
++ pt->unusedStuff = 0;
++ pt->shouldBeFF = 0xFFFFFFFF;
++
++}
++
++void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt)
++{
++ static const __u8 allFF[] =
++ { 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff,
++0xff };
++
++ if (memcmp(allFF, pt, sizeof(yaffs_PackedTags1))) {
++ t->blockBad = 0;
++ if (pt->shouldBeFF != 0xFFFFFFFF) {
++ t->blockBad = 1;
++ }
++ t->chunkUsed = 1;
++ t->objectId = pt->objectId;
++ t->chunkId = pt->chunkId;
++ t->byteCount = pt->byteCount;
++ t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++ t->chunkDeleted = (pt->deleted) ? 0 : 1;
++ t->serialNumber = pt->serialNumber;
++ } else {
++ memset(t, 0, sizeof(yaffs_ExtendedTags));
++
++ }
++}
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_packedtags1.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_packedtags1.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,37 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++/* This is used to pack YAFFS1 tags, not YAFFS2 tags. */
++
++#ifndef __YAFFS_PACKEDTAGS1_H__
++#define __YAFFS_PACKEDTAGS1_H__
++
++#include "yaffs_guts.h"
++
++typedef struct {
++ unsigned chunkId:20;
++ unsigned serialNumber:2;
++ unsigned byteCount:10;
++ unsigned objectId:18;
++ unsigned ecc:12;
++ unsigned deleted:1;
++ unsigned unusedStuff:1;
++ unsigned shouldBeFF;
++
++} yaffs_PackedTags1;
++
++void yaffs_PackTags1(yaffs_PackedTags1 * pt, const yaffs_ExtendedTags * t);
++void yaffs_UnpackTags1(yaffs_ExtendedTags * t, const yaffs_PackedTags1 * pt);
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_packedtags2.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_packedtags2.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,182 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include "yaffs_packedtags2.h"
++#include "yportenv.h"
++#include "yaffs_tagsvalidity.h"
++
++/* This code packs a set of extended tags into a binary structure for
++ * NAND storage
++ */
++
++/* Some of the information is "extra" struff which can be packed in to
++ * speed scanning
++ * This is defined by having the EXTRA_HEADER_INFO_FLAG set.
++ */
++
++/* Extra flags applied to chunkId */
++
++#define EXTRA_HEADER_INFO_FLAG 0x80000000
++#define EXTRA_SHRINK_FLAG 0x40000000
++#define EXTRA_SHADOWS_FLAG 0x20000000
++#define EXTRA_SPARE_FLAGS 0x10000000
++
++#define ALL_EXTRA_FLAGS 0xF0000000
++
++/* Also, the top 4 bits of the object Id are set to the object type. */
++#define EXTRA_OBJECT_TYPE_SHIFT (28)
++#define EXTRA_OBJECT_TYPE_MASK ((0x0F) << EXTRA_OBJECT_TYPE_SHIFT)
++
++static void yaffs_DumpPackedTags2(const yaffs_PackedTags2 * pt)
++{
++ T(YAFFS_TRACE_MTD,
++ (TSTR("packed tags obj %d chunk %d byte %d seq %d" TENDSTR),
++ pt->t.objectId, pt->t.chunkId, pt->t.byteCount,
++ pt->t.sequenceNumber));
++}
++
++static void yaffs_DumpTags2(const yaffs_ExtendedTags * t)
++{
++ T(YAFFS_TRACE_MTD,
++ (TSTR
++ ("ext.tags eccres %d blkbad %d chused %d obj %d chunk%d byte "
++ "%d del %d ser %d seq %d"
++ TENDSTR), t->eccResult, t->blockBad, t->chunkUsed, t->objectId,
++ t->chunkId, t->byteCount, t->chunkDeleted, t->serialNumber,
++ t->sequenceNumber));
++
++}
++
++void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t)
++{
++ pt->t.chunkId = t->chunkId;
++ pt->t.sequenceNumber = t->sequenceNumber;
++ pt->t.byteCount = t->byteCount;
++ pt->t.objectId = t->objectId;
++
++ if (t->chunkId == 0 && t->extraHeaderInfoAvailable) {
++ /* Store the extra header info instead */
++ /* We save the parent object in the chunkId */
++ pt->t.chunkId = EXTRA_HEADER_INFO_FLAG
++ | t->extraParentObjectId;
++ if (t->extraIsShrinkHeader) {
++ pt->t.chunkId |= EXTRA_SHRINK_FLAG;
++ }
++ if (t->extraShadows) {
++ pt->t.chunkId |= EXTRA_SHADOWS_FLAG;
++ }
++
++ pt->t.objectId &= ~EXTRA_OBJECT_TYPE_MASK;
++ pt->t.objectId |=
++ (t->extraObjectType << EXTRA_OBJECT_TYPE_SHIFT);
++
++ if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
++ pt->t.byteCount = t->extraEquivalentObjectId;
++ } else if (t->extraObjectType == YAFFS_OBJECT_TYPE_FILE) {
++ pt->t.byteCount = t->extraFileLength;
++ } else {
++ pt->t.byteCount = 0;
++ }
++ }
++
++ yaffs_DumpPackedTags2(pt);
++ yaffs_DumpTags2(t);
++
++#ifndef YAFFS_IGNORE_TAGS_ECC
++ {
++ yaffs_ECCCalculateOther((unsigned char *)&pt->t,
++ sizeof(yaffs_PackedTags2TagsPart),
++ &pt->ecc);
++ }
++#endif
++}
++
++void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt)
++{
++
++ memset(t, 0, sizeof(yaffs_ExtendedTags));
++
++ yaffs_InitialiseTags(t);
++
++ if (pt->t.sequenceNumber != 0xFFFFFFFF) {
++ /* Page is in use */
++#ifdef YAFFS_IGNORE_TAGS_ECC
++ {
++ t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++ }
++#else
++ {
++ yaffs_ECCOther ecc;
++ int result;
++ yaffs_ECCCalculateOther((unsigned char *)&pt->t,
++ sizeof
++ (yaffs_PackedTags2TagsPart),
++ &ecc);
++ result =
++ yaffs_ECCCorrectOther((unsigned char *)&pt->t,
++ sizeof
++ (yaffs_PackedTags2TagsPart),
++ &pt->ecc, &ecc);
++ switch(result){
++ case 0:
++ t->eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++ break;
++ case 1:
++ t->eccResult = YAFFS_ECC_RESULT_FIXED;
++ break;
++ case -1:
++ t->eccResult = YAFFS_ECC_RESULT_UNFIXED;
++ break;
++ default:
++ t->eccResult = YAFFS_ECC_RESULT_UNKNOWN;
++ }
++ }
++#endif
++ t->blockBad = 0;
++ t->chunkUsed = 1;
++ t->objectId = pt->t.objectId;
++ t->chunkId = pt->t.chunkId;
++ t->byteCount = pt->t.byteCount;
++ t->chunkDeleted = 0;
++ t->serialNumber = 0;
++ t->sequenceNumber = pt->t.sequenceNumber;
++
++ /* Do extra header info stuff */
++
++ if (pt->t.chunkId & EXTRA_HEADER_INFO_FLAG) {
++ t->chunkId = 0;
++ t->byteCount = 0;
++
++ t->extraHeaderInfoAvailable = 1;
++ t->extraParentObjectId =
++ pt->t.chunkId & (~(ALL_EXTRA_FLAGS));
++ t->extraIsShrinkHeader =
++ (pt->t.chunkId & EXTRA_SHRINK_FLAG) ? 1 : 0;
++ t->extraShadows =
++ (pt->t.chunkId & EXTRA_SHADOWS_FLAG) ? 1 : 0;
++ t->extraObjectType =
++ pt->t.objectId >> EXTRA_OBJECT_TYPE_SHIFT;
++ t->objectId &= ~EXTRA_OBJECT_TYPE_MASK;
++
++ if (t->extraObjectType == YAFFS_OBJECT_TYPE_HARDLINK) {
++ t->extraEquivalentObjectId = pt->t.byteCount;
++ } else {
++ t->extraFileLength = pt->t.byteCount;
++ }
++ }
++ }
++
++ yaffs_DumpPackedTags2(pt);
++ yaffs_DumpTags2(t);
++
++}
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_packedtags2.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_packedtags2.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,38 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++/* This is used to pack YAFFS2 tags, not YAFFS1tags. */
++
++#ifndef __YAFFS_PACKEDTAGS2_H__
++#define __YAFFS_PACKEDTAGS2_H__
++
++#include "yaffs_guts.h"
++#include "yaffs_ecc.h"
++
++typedef struct {
++ unsigned sequenceNumber;
++ unsigned objectId;
++ unsigned chunkId;
++ unsigned byteCount;
++} yaffs_PackedTags2TagsPart;
++
++typedef struct {
++ yaffs_PackedTags2TagsPart t;
++ yaffs_ECCOther ecc;
++} yaffs_PackedTags2;
++
++void yaffs_PackTags2(yaffs_PackedTags2 * pt, const yaffs_ExtendedTags * t);
++void yaffs_UnpackTags2(yaffs_ExtendedTags * t, yaffs_PackedTags2 * pt);
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_qsort.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_qsort.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,160 @@
++/*
++ * Copyright (c) 1992, 1993
++ * The Regents of the University of California. All rights reserved.
++ *
++ * Redistribution and use in source and binary forms, with or without
++ * modification, are permitted provided that the following conditions
++ * are met:
++ * 1. Redistributions of source code must retain the above copyright
++ * notice, this list of conditions and the following disclaimer.
++ * 2. Redistributions in binary form must reproduce the above copyright
++ * notice, this list of conditions and the following disclaimer in the
++ * documentation and/or other materials provided with the distribution.
++ * 3. Neither the name of the University nor the names of its contributors
++ * may be used to endorse or promote products derived from this software
++ * without specific prior written permission.
++ *
++ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
++ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
++ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
++ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
++ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
++ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
++ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
++ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
++ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
++ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
++ * SUCH DAMAGE.
++ */
++
++#include "yportenv.h"
++//#include <linux/string.h>
++
++/*
++ * Qsort routine from Bentley & McIlroy's "Engineering a Sort Function".
++ */
++#define swapcode(TYPE, parmi, parmj, n) { \
++ long i = (n) / sizeof (TYPE); \
++ register TYPE *pi = (TYPE *) (parmi); \
++ register TYPE *pj = (TYPE *) (parmj); \
++ do { \
++ register TYPE t = *pi; \
++ *pi++ = *pj; \
++ *pj++ = t; \
++ } while (--i > 0); \
++}
++
++#define SWAPINIT(a, es) swaptype = ((char *)a - (char *)0) % sizeof(long) || \
++ es % sizeof(long) ? 2 : es == sizeof(long)? 0 : 1;
++
++static __inline void
++swapfunc(char *a, char *b, int n, int swaptype)
++{
++ if (swaptype <= 1)
++ swapcode(long, a, b, n)
++ else
++ swapcode(char, a, b, n)
++}
++
++#define swap(a, b) \
++ if (swaptype == 0) { \
++ long t = *(long *)(a); \
++ *(long *)(a) = *(long *)(b); \
++ *(long *)(b) = t; \
++ } else \
++ swapfunc(a, b, es, swaptype)
++
++#define vecswap(a, b, n) if ((n) > 0) swapfunc(a, b, n, swaptype)
++
++static __inline char *
++med3(char *a, char *b, char *c, int (*cmp)(const void *, const void *))
++{
++ return cmp(a, b) < 0 ?
++ (cmp(b, c) < 0 ? b : (cmp(a, c) < 0 ? c : a ))
++ :(cmp(b, c) > 0 ? b : (cmp(a, c) < 0 ? a : c ));
++}
++
++#ifndef min
++#define min(a,b) (((a) < (b)) ? (a) : (b))
++#endif
++
++void
++yaffs_qsort(void *aa, size_t n, size_t es,
++ int (*cmp)(const void *, const void *))
++{
++ char *pa, *pb, *pc, *pd, *pl, *pm, *pn;
++ int d, r, swaptype, swap_cnt;
++ register char *a = aa;
++
++loop: SWAPINIT(a, es);
++ swap_cnt = 0;
++ if (n < 7) {
++ for (pm = (char *)a + es; pm < (char *) a + n * es; pm += es)
++ for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
++ pl -= es)
++ swap(pl, pl - es);
++ return;
++ }
++ pm = (char *)a + (n / 2) * es;
++ if (n > 7) {
++ pl = (char *)a;
++ pn = (char *)a + (n - 1) * es;
++ if (n > 40) {
++ d = (n / 8) * es;
++ pl = med3(pl, pl + d, pl + 2 * d, cmp);
++ pm = med3(pm - d, pm, pm + d, cmp);
++ pn = med3(pn - 2 * d, pn - d, pn, cmp);
++ }
++ pm = med3(pl, pm, pn, cmp);
++ }
++ swap(a, pm);
++ pa = pb = (char *)a + es;
++
++ pc = pd = (char *)a + (n - 1) * es;
++ for (;;) {
++ while (pb <= pc && (r = cmp(pb, a)) <= 0) {
++ if (r == 0) {
++ swap_cnt = 1;
++ swap(pa, pb);
++ pa += es;
++ }
++ pb += es;
++ }
++ while (pb <= pc && (r = cmp(pc, a)) >= 0) {
++ if (r == 0) {
++ swap_cnt = 1;
++ swap(pc, pd);
++ pd -= es;
++ }
++ pc -= es;
++ }
++ if (pb > pc)
++ break;
++ swap(pb, pc);
++ swap_cnt = 1;
++ pb += es;
++ pc -= es;
++ }
++ if (swap_cnt == 0) { /* Switch to insertion sort */
++ for (pm = (char *) a + es; pm < (char *) a + n * es; pm += es)
++ for (pl = pm; pl > (char *) a && cmp(pl - es, pl) > 0;
++ pl -= es)
++ swap(pl, pl - es);
++ return;
++ }
++
++ pn = (char *)a + n * es;
++ r = min(pa - (char *)a, pb - pa);
++ vecswap(a, pb - r, r);
++ r = min((long)(pd - pc), (long)(pn - pd - es));
++ vecswap(pb, pn - r, r);
++ if ((r = pb - pa) > es)
++ yaffs_qsort(a, r / es, es, cmp);
++ if ((r = pd - pc) > es) {
++ /* Iterate rather than recurse to save stack space */
++ a = pn - r;
++ n = r / es;
++ goto loop;
++ }
++/* yaffs_qsort(pn - r, r / es, es, cmp);*/
++}
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_qsort.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_qsort.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,23 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++
++#ifndef __YAFFS_QSORT_H__
++#define __YAFFS_QSORT_H__
++
++extern void yaffs_qsort (void *const base, size_t total_elems, size_t size,
++ int (*cmp)(const void *, const void *));
++
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_tagscompat.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_tagscompat.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,530 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include "yaffs_guts.h"
++#include "yaffs_tagscompat.h"
++#include "yaffs_ecc.h"
++
++static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND);
++#ifdef NOTYET
++static void yaffs_CheckWrittenBlock(yaffs_Device * dev, int chunkInNAND);
++static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
++ const __u8 * data,
++ const yaffs_Spare * spare);
++static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
++ const yaffs_Spare * spare);
++static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND);
++#endif
++
++static const char yaffs_countBitsTable[256] = {
++ 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4,
++ 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
++ 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
++ 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
++ 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
++ 1, 2, 2, 3, 2, 3, 3, 4, 2, 3, 3, 4, 3, 4, 4, 5,
++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
++ 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
++ 2, 3, 3, 4, 3, 4, 4, 5, 3, 4, 4, 5, 4, 5, 5, 6,
++ 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
++ 3, 4, 4, 5, 4, 5, 5, 6, 4, 5, 5, 6, 5, 6, 6, 7,
++ 4, 5, 5, 6, 5, 6, 6, 7, 5, 6, 6, 7, 6, 7, 7, 8
++};
++
++int yaffs_CountBits(__u8 x)
++{
++ int retVal;
++ retVal = yaffs_countBitsTable[x];
++ return retVal;
++}
++
++/********** Tags ECC calculations *********/
++
++void yaffs_CalcECC(const __u8 * data, yaffs_Spare * spare)
++{
++ yaffs_ECCCalculate(data, spare->ecc1);
++ yaffs_ECCCalculate(&data[256], spare->ecc2);
++}
++
++void yaffs_CalcTagsECC(yaffs_Tags * tags)
++{
++ /* Calculate an ecc */
++
++ unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes;
++ unsigned i, j;
++ unsigned ecc = 0;
++ unsigned bit = 0;
++
++ tags->ecc = 0;
++
++ for (i = 0; i < 8; i++) {
++ for (j = 1; j & 0xff; j <<= 1) {
++ bit++;
++ if (b[i] & j) {
++ ecc ^= bit;
++ }
++ }
++ }
++
++ tags->ecc = ecc;
++
++}
++
++int yaffs_CheckECCOnTags(yaffs_Tags * tags)
++{
++ unsigned ecc = tags->ecc;
++
++ yaffs_CalcTagsECC(tags);
++
++ ecc ^= tags->ecc;
++
++ if (ecc && ecc <= 64) {
++ /* TODO: Handle the failure better. Retire? */
++ unsigned char *b = ((yaffs_TagsUnion *) tags)->asBytes;
++
++ ecc--;
++
++ b[ecc / 8] ^= (1 << (ecc & 7));
++
++ /* Now recvalc the ecc */
++ yaffs_CalcTagsECC(tags);
++
++ return 1; /* recovered error */
++ } else if (ecc) {
++ /* Wierd ecc failure value */
++ /* TODO Need to do somethiong here */
++ return -1; /* unrecovered error */
++ }
++
++ return 0;
++}
++
++/********** Tags **********/
++
++static void yaffs_LoadTagsIntoSpare(yaffs_Spare * sparePtr,
++ yaffs_Tags * tagsPtr)
++{
++ yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr;
++
++ yaffs_CalcTagsECC(tagsPtr);
++
++ sparePtr->tagByte0 = tu->asBytes[0];
++ sparePtr->tagByte1 = tu->asBytes[1];
++ sparePtr->tagByte2 = tu->asBytes[2];
++ sparePtr->tagByte3 = tu->asBytes[3];
++ sparePtr->tagByte4 = tu->asBytes[4];
++ sparePtr->tagByte5 = tu->asBytes[5];
++ sparePtr->tagByte6 = tu->asBytes[6];
++ sparePtr->tagByte7 = tu->asBytes[7];
++}
++
++static void yaffs_GetTagsFromSpare(yaffs_Device * dev, yaffs_Spare * sparePtr,
++ yaffs_Tags * tagsPtr)
++{
++ yaffs_TagsUnion *tu = (yaffs_TagsUnion *) tagsPtr;
++ int result;
++
++ tu->asBytes[0] = sparePtr->tagByte0;
++ tu->asBytes[1] = sparePtr->tagByte1;
++ tu->asBytes[2] = sparePtr->tagByte2;
++ tu->asBytes[3] = sparePtr->tagByte3;
++ tu->asBytes[4] = sparePtr->tagByte4;
++ tu->asBytes[5] = sparePtr->tagByte5;
++ tu->asBytes[6] = sparePtr->tagByte6;
++ tu->asBytes[7] = sparePtr->tagByte7;
++
++ result = yaffs_CheckECCOnTags(tagsPtr);
++ if (result > 0) {
++ dev->tagsEccFixed++;
++ } else if (result < 0) {
++ dev->tagsEccUnfixed++;
++ }
++}
++
++static void yaffs_SpareInitialise(yaffs_Spare * spare)
++{
++ memset(spare, 0xFF, sizeof(yaffs_Spare));
++}
++
++static int yaffs_WriteChunkToNAND(struct yaffs_DeviceStruct *dev,
++ int chunkInNAND, const __u8 * data,
++ yaffs_Spare * spare)
++{
++ if (chunkInNAND < dev->startBlock * dev->nChunksPerBlock) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR("**>> yaffs chunk %d is not valid" TENDSTR),
++ chunkInNAND));
++ return YAFFS_FAIL;
++ }
++
++ dev->nPageWrites++;
++ return dev->writeChunkToNAND(dev, chunkInNAND, data, spare);
++}
++
++static int yaffs_ReadChunkFromNAND(struct yaffs_DeviceStruct *dev,
++ int chunkInNAND,
++ __u8 * data,
++ yaffs_Spare * spare,
++ yaffs_ECCResult * eccResult,
++ int doErrorCorrection)
++{
++ int retVal;
++ yaffs_Spare localSpare;
++
++ dev->nPageReads++;
++
++ if (!spare && data) {
++ /* If we don't have a real spare, then we use a local one. */
++ /* Need this for the calculation of the ecc */
++ spare = &localSpare;
++ }
++
++ if (!dev->useNANDECC) {
++ retVal = dev->readChunkFromNAND(dev, chunkInNAND, data, spare);
++ if (data && doErrorCorrection) {
++ /* Do ECC correction */
++ /* Todo handle any errors */
++ int eccResult1, eccResult2;
++ __u8 calcEcc[3];
++
++ yaffs_ECCCalculate(data, calcEcc);
++ eccResult1 =
++ yaffs_ECCCorrect(data, spare->ecc1, calcEcc);
++ yaffs_ECCCalculate(&data[256], calcEcc);
++ eccResult2 =
++ yaffs_ECCCorrect(&data[256], spare->ecc2, calcEcc);
++
++ if (eccResult1 > 0) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("**>>yaffs ecc error fix performed on chunk %d:0"
++ TENDSTR), chunkInNAND));
++ dev->eccFixed++;
++ } else if (eccResult1 < 0) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("**>>yaffs ecc error unfixed on chunk %d:0"
++ TENDSTR), chunkInNAND));
++ dev->eccUnfixed++;
++ }
++
++ if (eccResult2 > 0) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("**>>yaffs ecc error fix performed on chunk %d:1"
++ TENDSTR), chunkInNAND));
++ dev->eccFixed++;
++ } else if (eccResult2 < 0) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("**>>yaffs ecc error unfixed on chunk %d:1"
++ TENDSTR), chunkInNAND));
++ dev->eccUnfixed++;
++ }
++
++ if (eccResult1 || eccResult2) {
++ /* We had a data problem on this page */
++ yaffs_HandleReadDataError(dev, chunkInNAND);
++ }
++
++ if (eccResult1 < 0 || eccResult2 < 0)
++ *eccResult = YAFFS_ECC_RESULT_UNFIXED;
++ else if (eccResult1 > 0 || eccResult2 > 0)
++ *eccResult = YAFFS_ECC_RESULT_FIXED;
++ else
++ *eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++ }
++ } else {
++ /* Must allocate enough memory for spare+2*sizeof(int) */
++ /* for ecc results from device. */
++ struct yaffs_NANDSpare nspare;
++ retVal =
++ dev->readChunkFromNAND(dev, chunkInNAND, data,
++ (yaffs_Spare *) & nspare);
++ memcpy(spare, &nspare, sizeof(yaffs_Spare));
++ if (data && doErrorCorrection) {
++ if (nspare.eccres1 > 0) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("**>>mtd ecc error fix performed on chunk %d:0"
++ TENDSTR), chunkInNAND));
++ } else if (nspare.eccres1 < 0) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("**>>mtd ecc error unfixed on chunk %d:0"
++ TENDSTR), chunkInNAND));
++ }
++
++ if (nspare.eccres2 > 0) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("**>>mtd ecc error fix performed on chunk %d:1"
++ TENDSTR), chunkInNAND));
++ } else if (nspare.eccres2 < 0) {
++ T(YAFFS_TRACE_ERROR,
++ (TSTR
++ ("**>>mtd ecc error unfixed on chunk %d:1"
++ TENDSTR), chunkInNAND));
++ }
++
++ if (nspare.eccres1 || nspare.eccres2) {
++ /* We had a data problem on this page */
++ yaffs_HandleReadDataError(dev, chunkInNAND);
++ }
++
++ if (nspare.eccres1 < 0 || nspare.eccres2 < 0)
++ *eccResult = YAFFS_ECC_RESULT_UNFIXED;
++ else if (nspare.eccres1 > 0 || nspare.eccres2 > 0)
++ *eccResult = YAFFS_ECC_RESULT_FIXED;
++ else
++ *eccResult = YAFFS_ECC_RESULT_NO_ERROR;
++
++ }
++ }
++ return retVal;
++}
++
++#ifdef NOTYET
++static int yaffs_CheckChunkErased(struct yaffs_DeviceStruct *dev,
++ int chunkInNAND)
++{
++
++ static int init = 0;
++ static __u8 cmpbuf[YAFFS_BYTES_PER_CHUNK];
++ static __u8 data[YAFFS_BYTES_PER_CHUNK];
++ /* Might as well always allocate the larger size for */
++ /* dev->useNANDECC == true; */
++ static __u8 spare[sizeof(struct yaffs_NANDSpare)];
++
++ dev->readChunkFromNAND(dev, chunkInNAND, data, (yaffs_Spare *) spare);
++
++ if (!init) {
++ memset(cmpbuf, 0xff, YAFFS_BYTES_PER_CHUNK);
++ init = 1;
++ }
++
++ if (memcmp(cmpbuf, data, YAFFS_BYTES_PER_CHUNK))
++ return YAFFS_FAIL;
++ if (memcmp(cmpbuf, spare, 16))
++ return YAFFS_FAIL;
++
++ return YAFFS_OK;
++
++}
++#endif
++
++/*
++ * Functions for robustisizing
++ */
++
++static void yaffs_HandleReadDataError(yaffs_Device * dev, int chunkInNAND)
++{
++ int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
++
++ /* Mark the block for retirement */
++ yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1;
++ T(YAFFS_TRACE_ERROR | YAFFS_TRACE_BAD_BLOCKS,
++ (TSTR("**>>Block %d marked for retirement" TENDSTR), blockInNAND));
++
++ /* TODO:
++ * Just do a garbage collection on the affected block
++ * then retire the block
++ * NB recursion
++ */
++}
++
++#ifdef NOTYET
++static void yaffs_CheckWrittenBlock(yaffs_Device * dev, int chunkInNAND)
++{
++}
++
++static void yaffs_HandleWriteChunkOk(yaffs_Device * dev, int chunkInNAND,
++ const __u8 * data,
++ const yaffs_Spare * spare)
++{
++}
++
++static void yaffs_HandleUpdateChunk(yaffs_Device * dev, int chunkInNAND,
++ const yaffs_Spare * spare)
++{
++}
++
++static void yaffs_HandleWriteChunkError(yaffs_Device * dev, int chunkInNAND)
++{
++ int blockInNAND = chunkInNAND / dev->nChunksPerBlock;
++
++ /* Mark the block for retirement */
++ yaffs_GetBlockInfo(dev, blockInNAND)->needsRetiring = 1;
++ /* Delete the chunk */
++ yaffs_DeleteChunk(dev, chunkInNAND, 1, __LINE__);
++}
++
++static int yaffs_VerifyCompare(const __u8 * d0, const __u8 * d1,
++ const yaffs_Spare * s0, const yaffs_Spare * s1)
++{
++
++ if (memcmp(d0, d1, YAFFS_BYTES_PER_CHUNK) != 0 ||
++ s0->tagByte0 != s1->tagByte0 ||
++ s0->tagByte1 != s1->tagByte1 ||
++ s0->tagByte2 != s1->tagByte2 ||
++ s0->tagByte3 != s1->tagByte3 ||
++ s0->tagByte4 != s1->tagByte4 ||
++ s0->tagByte5 != s1->tagByte5 ||
++ s0->tagByte6 != s1->tagByte6 ||
++ s0->tagByte7 != s1->tagByte7 ||
++ s0->ecc1[0] != s1->ecc1[0] ||
++ s0->ecc1[1] != s1->ecc1[1] ||
++ s0->ecc1[2] != s1->ecc1[2] ||
++ s0->ecc2[0] != s1->ecc2[0] ||
++ s0->ecc2[1] != s1->ecc2[1] || s0->ecc2[2] != s1->ecc2[2]) {
++ return 0;
++ }
++
++ return 1;
++}
++#endif /* NOTYET */
++
++int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev,
++ int chunkInNAND,
++ const __u8 * data,
++ const yaffs_ExtendedTags *
++ eTags)
++{
++ yaffs_Spare spare;
++ yaffs_Tags tags;
++
++ yaffs_SpareInitialise(&spare);
++
++ if (eTags->chunkDeleted) {
++ spare.pageStatus = 0;
++ } else {
++ tags.objectId = eTags->objectId;
++ tags.chunkId = eTags->chunkId;
++ tags.byteCount = eTags->byteCount;
++ tags.serialNumber = eTags->serialNumber;
++
++ if (!dev->useNANDECC && data) {
++ yaffs_CalcECC(data, &spare);
++ }
++ yaffs_LoadTagsIntoSpare(&spare, &tags);
++
++ }
++
++ return yaffs_WriteChunkToNAND(dev, chunkInNAND, data, &spare);
++}
++
++int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev,
++ int chunkInNAND,
++ __u8 * data,
++ yaffs_ExtendedTags * eTags)
++{
++
++ yaffs_Spare spare;
++ yaffs_Tags tags;
++ yaffs_ECCResult eccResult;
++
++ static yaffs_Spare spareFF;
++ static int init;
++
++ if (!init) {
++ memset(&spareFF, 0xFF, sizeof(spareFF));
++ init = 1;
++ }
++
++ if (yaffs_ReadChunkFromNAND
++ (dev, chunkInNAND, data, &spare, &eccResult, 1)) {
++ /* eTags may be NULL */
++ if (eTags) {
++
++ int deleted =
++ (yaffs_CountBits(spare.pageStatus) < 7) ? 1 : 0;
++
++ eTags->chunkDeleted = deleted;
++ eTags->eccResult = eccResult;
++ eTags->blockBad = 0; /* We're reading it */
++ /* therefore it is not a bad block */
++ eTags->chunkUsed =
++ (memcmp(&spareFF, &spare, sizeof(spareFF)) !=
++ 0) ? 1 : 0;
++
++ if (eTags->chunkUsed) {
++ yaffs_GetTagsFromSpare(dev, &spare, &tags);
++
++ eTags->objectId = tags.objectId;
++ eTags->chunkId = tags.chunkId;
++ eTags->byteCount = tags.byteCount;
++ eTags->serialNumber = tags.serialNumber;
++ }
++ }
++
++ return YAFFS_OK;
++ } else {
++ return YAFFS_FAIL;
++ }
++}
++
++int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev,
++ int blockInNAND)
++{
++
++ yaffs_Spare spare;
++
++ memset(&spare, 0xff, sizeof(yaffs_Spare));
++
++ spare.blockStatus = 'Y';
++
++ yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock, NULL,
++ &spare);
++ yaffs_WriteChunkToNAND(dev, blockInNAND * dev->nChunksPerBlock + 1,
++ NULL, &spare);
++
++ return YAFFS_OK;
++
++}
++
++int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
++ int blockNo, yaffs_BlockState *
++ state,
++ int *sequenceNumber)
++{
++
++ yaffs_Spare spare0, spare1;
++ static yaffs_Spare spareFF;
++ static int init;
++ yaffs_ECCResult dummy;
++
++ if (!init) {
++ memset(&spareFF, 0xFF, sizeof(spareFF));
++ init = 1;
++ }
++
++ *sequenceNumber = 0;
++
++ yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock, NULL,
++ &spare0, &dummy, 1);
++ yaffs_ReadChunkFromNAND(dev, blockNo * dev->nChunksPerBlock + 1, NULL,
++ &spare1, &dummy, 1);
++
++ if (yaffs_CountBits(spare0.blockStatus & spare1.blockStatus) < 7)
++ *state = YAFFS_BLOCK_STATE_DEAD;
++ else if (memcmp(&spareFF, &spare0, sizeof(spareFF)) == 0)
++ *state = YAFFS_BLOCK_STATE_EMPTY;
++ else
++ *state = YAFFS_BLOCK_STATE_NEEDS_SCANNING;
++
++ return YAFFS_OK;
++}
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_tagscompat.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_tagscompat.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,40 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFS_TAGSCOMPAT_H__
++#define __YAFFS_TAGSCOMPAT_H__
++
++#include "yaffs_guts.h"
++int yaffs_TagsCompatabilityWriteChunkWithTagsToNAND(yaffs_Device * dev,
++ int chunkInNAND,
++ const __u8 * data,
++ const yaffs_ExtendedTags *
++ tags);
++int yaffs_TagsCompatabilityReadChunkWithTagsFromNAND(yaffs_Device * dev,
++ int chunkInNAND,
++ __u8 * data,
++ yaffs_ExtendedTags *
++ tags);
++int yaffs_TagsCompatabilityMarkNANDBlockBad(struct yaffs_DeviceStruct *dev,
++ int blockNo);
++int yaffs_TagsCompatabilityQueryNANDBlock(struct yaffs_DeviceStruct *dev,
++ int blockNo, yaffs_BlockState *
++ state, int *sequenceNumber);
++
++void yaffs_CalcTagsECC(yaffs_Tags * tags);
++int yaffs_CheckECCOnTags(yaffs_Tags * tags);
++int yaffs_CountBits(__u8 byte);
++
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_tagsvalidity.c
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_tagsvalidity.c 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,28 @@
++/*
++ * YAFFS: Yet Another Flash File System. A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU General Public License version 2 as
++ * published by the Free Software Foundation.
++ */
++
++#include "yaffs_tagsvalidity.h"
++
++void yaffs_InitialiseTags(yaffs_ExtendedTags * tags)
++{
++ memset(tags, 0, sizeof(yaffs_ExtendedTags));
++ tags->validMarker0 = 0xAAAAAAAA;
++ tags->validMarker1 = 0x55555555;
++}
++
++int yaffs_ValidateTags(yaffs_ExtendedTags * tags)
++{
++ return (tags->validMarker0 == 0xAAAAAAAA &&
++ tags->validMarker1 == 0x55555555);
++
++}
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffs_tagsvalidity.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffs_tagsvalidity.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,24 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++
++#ifndef __YAFFS_TAGS_VALIDITY_H__
++#define __YAFFS_TAGS_VALIDITY_H__
++
++#include "yaffs_guts.h"
++
++void yaffs_InitialiseTags(yaffs_ExtendedTags * tags);
++int yaffs_ValidateTags(yaffs_ExtendedTags * tags);
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yaffsinterface.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yaffsinterface.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,21 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++#ifndef __YAFFSINTERFACE_H__
++#define __YAFFSINTERFACE_H__
++
++int yaffs_Initialise(unsigned nBlocks);
++
++#endif
+Index: linux-2.6.23-rc6/fs/yaffs2/yportenv.h
+===================================================================
+--- /dev/null 1970-01-01 00:00:00.000000000 +0000
++++ linux-2.6.23-rc6/fs/yaffs2/yportenv.h 2007-09-21 16:24:08.000000000 +0800
+@@ -0,0 +1,186 @@
++/*
++ * YAFFS: Yet another Flash File System . A NAND-flash specific file system.
++ *
++ * Copyright (C) 2002-2007 Aleph One Ltd.
++ * for Toby Churchill Ltd and Brightstar Engineering
++ *
++ * Created by Charles Manning <charles@aleph1.co.uk>
++ *
++ * This program is free software; you can redistribute it and/or modify
++ * it under the terms of the GNU Lesser General Public License version 2.1 as
++ * published by the Free Software Foundation.
++ *
++ * Note: Only YAFFS headers are LGPL, YAFFS C code is covered by GPL.
++ */
++
++
++#ifndef __YPORTENV_H__
++#define __YPORTENV_H__
++
++#if defined CONFIG_YAFFS_WINCE
++
++#include "ywinceenv.h"
++
++#elif defined __KERNEL__
++
++#include "moduleconfig.h"
++
++/* Linux kernel */
++#include <linux/version.h>
++#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19))
++#include <linux/config.h>
++#endif
++#include <linux/kernel.h>
++#include <linux/mm.h>
++#include <linux/string.h>
++#include <linux/slab.h>
++#include <linux/vmalloc.h>
++
++#define YCHAR char
++#define YUCHAR unsigned char
++#define _Y(x) x
++#define yaffs_strcpy(a,b) strcpy(a,b)
++#define yaffs_strncpy(a,b,c) strncpy(a,b,c)
++#define yaffs_strncmp(a,b,c) strncmp(a,b,c)
++#define yaffs_strlen(s) strlen(s)
++#define yaffs_sprintf sprintf
++#define yaffs_toupper(a) toupper(a)
++
++#define Y_INLINE inline
++
++#define YAFFS_LOSTNFOUND_NAME "lost+found"
++#define YAFFS_LOSTNFOUND_PREFIX "obj"
++
++/* #define YPRINTF(x) printk x */
++#define YMALLOC(x) kmalloc(x,GFP_KERNEL)
++#define YFREE(x) kfree(x)
++#define YMALLOC_ALT(x) vmalloc(x)
++#define YFREE_ALT(x) vfree(x)
++#define YMALLOC_DMA(x) YMALLOC(x)
++
++// KR - added for use in scan so processes aren't blocked indefinitely.
++#define YYIELD() schedule()
++
++#define YAFFS_ROOT_MODE 0666
++#define YAFFS_LOSTNFOUND_MODE 0666
++
++#if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0))
++#define Y_CURRENT_TIME CURRENT_TIME.tv_sec
++#define Y_TIME_CONVERT(x) (x).tv_sec
++#else
++#define Y_CURRENT_TIME CURRENT_TIME
++#define Y_TIME_CONVERT(x) (x)
++#endif
++
++#define yaffs_SumCompare(x,y) ((x) == (y))
++#define yaffs_strcmp(a,b) strcmp(a,b)
++
++#define TENDSTR "\n"
++#define TSTR(x) KERN_WARNING x
++#define TOUT(p) printk p
++
++#define yaffs_trace(mask, fmt, args...) \
++ do { if ((mask) & (yaffs_traceMask|YAFFS_TRACE_ERROR)) \
++ printk(KERN_WARNING "yaffs: " fmt, ## args); \
++ } while (0)
++
++#define compile_time_assertion(assertion) \
++ ({ int x = __builtin_choose_expr(assertion, 0, (void)0); (void) x; })
++
++#elif defined CONFIG_YAFFS_DIRECT
++
++/* Direct interface */
++#include "ydirectenv.h"
++
++#elif defined CONFIG_YAFFS_UTIL
++
++/* Stuff for YAFFS utilities */
++
++#include "stdlib.h"
++#include "stdio.h"
++#include "string.h"
++
++#include "devextras.h"
++
++#define YMALLOC(x) malloc(x)
++#define YFREE(x) free(x)
++#define YMALLOC_ALT(x) malloc(x)
++#define YFREE_ALT(x) free(x)
++
++#define YCHAR char
++#define YUCHAR unsigned char
++#define _Y(x) x
++#define yaffs_strcpy(a,b) strcpy(a,b)
++#define yaffs_strncpy(a,b,c) strncpy(a,b,c)
++#define yaffs_strlen(s) strlen(s)
++#define yaffs_sprintf sprintf
++#define yaffs_toupper(a) toupper(a)
++
++#define Y_INLINE inline
++
++/* #define YINFO(s) YPRINTF(( __FILE__ " %d %s\n",__LINE__,s)) */
++/* #define YALERT(s) YINFO(s) */
++
++#define TENDSTR "\n"
++#define TSTR(x) x
++#define TOUT(p) printf p
++
++#define YAFFS_LOSTNFOUND_NAME "lost+found"
++#define YAFFS_LOSTNFOUND_PREFIX "obj"
++/* #define YPRINTF(x) printf x */
++
++#define YAFFS_ROOT_MODE 0666
++#define YAFFS_LOSTNFOUND_MODE 0666
++
++#define yaffs_SumCompare(x,y) ((x) == (y))
++#define yaffs_strcmp(a,b) strcmp(a,b)
++
++#else
++/* Should have specified a configuration type */
++#error Unknown configuration
++
++#endif
++
++/* see yaffs_fs.c */
++extern unsigned int yaffs_traceMask;
++extern unsigned int yaffs_wr_attempts;
++
++/*
++ * Tracing flags.
++ * The flags masked in YAFFS_TRACE_ALWAYS are always traced.
++ */
++
++#define YAFFS_TRACE_OS 0x00000002
++#define YAFFS_TRACE_ALLOCATE 0x00000004
++#define YAFFS_TRACE_SCAN 0x00000008
++#define YAFFS_TRACE_BAD_BLOCKS 0x00000010
++#define YAFFS_TRACE_ERASE 0x00000020
++#define YAFFS_TRACE_GC 0x00000040
++#define YAFFS_TRACE_WRITE 0x00000080
++#define YAFFS_TRACE_TRACING 0x00000100
++#define YAFFS_TRACE_DELETION 0x00000200
++#define YAFFS_TRACE_BUFFERS 0x00000400
++#define YAFFS_TRACE_NANDACCESS 0x00000800
++#define YAFFS_TRACE_GC_DETAIL 0x00001000
++#define YAFFS_TRACE_SCAN_DEBUG 0x00002000
++#define YAFFS_TRACE_MTD 0x00004000
++#define YAFFS_TRACE_CHECKPOINT 0x00008000
++
++#define YAFFS_TRACE_VERIFY 0x00010000
++#define YAFFS_TRACE_VERIFY_NAND 0x00020000
++#define YAFFS_TRACE_VERIFY_FULL 0x00040000
++#define YAFFS_TRACE_VERIFY_ALL 0x000F0000
++
++
++#define YAFFS_TRACE_ERROR 0x40000000
++#define YAFFS_TRACE_BUG 0x80000000
++#define YAFFS_TRACE_ALWAYS 0xF0000000
++
++
++#define T(mask,p) do{ if((mask) & (yaffs_traceMask | YAFFS_TRACE_ALWAYS)) TOUT(p);} while(0)
++
++#ifndef CONFIG_YAFFS_WINCE
++#define YBUG() T(YAFFS_TRACE_BUG,(TSTR("==>> yaffs bug: " __FILE__ " %d" TENDSTR),__LINE__))
++#endif
++
++#endif
--- /dev/null
+Index: linux-2.6.23-rc6/drivers/usb/serial/usb-serial.c
+===================================================================
+--- linux-2.6.23-rc6.orig/drivers/usb/serial/usb-serial.c 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/drivers/usb/serial/usb-serial.c 2007-09-21 16:24:09.000000000 +0800
+@@ -58,6 +58,7 @@
+ drivers depend on it.
+ */
+
++static ushort maxSize = 0;
+ static int debug;
+ static struct usb_serial *serial_table[SERIAL_TTY_MINORS]; /* initially all NULL */
+ static DEFINE_MUTEX(table_lock);
+@@ -866,7 +867,7 @@
+ dev_err(&interface->dev, "No free urbs available\n");
+ goto probe_error;
+ }
+- buffer_size = le16_to_cpu(endpoint->wMaxPacketSize);
++ buffer_size = (endpoint->wMaxPacketSize > maxSize) ? endpoint->wMaxPacketSize : maxSize;
+ port->bulk_in_size = buffer_size;
+ port->bulk_in_endpointAddress = endpoint->bEndpointAddress;
+ port->bulk_in_buffer = kmalloc (buffer_size, GFP_KERNEL);
+@@ -1276,3 +1277,5 @@
+
+ module_param(debug, bool, S_IRUGO | S_IWUSR);
+ MODULE_PARM_DESC(debug, "Debug enabled or not");
++module_param(maxSize, ushort,0);
++MODULE_PARM_DESC(maxSize,"User specified USB endpoint size");
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/time.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/time.h 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/time.h 2007-09-21 16:24:09.000000000 +0800
+@@ -1,6 +1,10 @@
+ #ifndef _LINUX_TIME_H
+ #define _LINUX_TIME_H
+
++#ifndef __KERNEL__
++#include <time.h>
++#else
++
+ #include <linux/types.h>
+
+ #ifdef __KERNEL__
+@@ -227,4 +231,6 @@
+ */
+ #define TIMER_ABSTIME 0x01
+
++#endif /* __KERNEL__ DEBIAN */
++
+ #endif
+Index: linux-2.6.23-rc6/include/linux/types.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/types.h 2007-09-21 16:23:52.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/types.h 2007-09-21 16:24:09.000000000 +0800
+@@ -1,6 +1,14 @@
+ #ifndef _LINUX_TYPES_H
+ #define _LINUX_TYPES_H
+
++/* Debian: Use userland types instead. */
++#ifndef __KERNEL__
++# include <sys/types.h>
++/* For other kernel headers. */
++# include <linux/posix_types.h>
++# include <asm/types.h>
++#else
++
+ #ifdef __KERNEL__
+
+ #define BITS_TO_LONGS(bits) \
+@@ -162,6 +170,8 @@
+
+ #endif /* __KERNEL_STRICT_NAMES */
+
++#endif /* __KERNEL__ DEBIAN */
++
+ /*
+ * Below are truly Linux-specific types that should never collide with
+ * any application/library that wants linux/types.h.
--- /dev/null
+Index: linux-2.6.23-rc6/scripts/genksyms/parse.c_shipped
+===================================================================
+--- linux-2.6.23-rc6.orig/scripts/genksyms/parse.c_shipped 2007-09-21 16:23:51.000000000 +0800
++++ linux-2.6.23-rc6/scripts/genksyms/parse.c_shipped 2007-09-21 16:24:10.000000000 +0800
+@@ -144,7 +144,9 @@
+
+
+ #include <assert.h>
++#ifndef __APPLE__
+ #include <malloc.h>
++#endif
+ #include "genksyms.h"
+
+ static int is_typedef;
+Index: linux-2.6.23-rc6/scripts/genksyms/parse.y
+===================================================================
+--- linux-2.6.23-rc6.orig/scripts/genksyms/parse.y 2007-09-21 16:23:51.000000000 +0800
++++ linux-2.6.23-rc6/scripts/genksyms/parse.y 2007-09-21 16:24:10.000000000 +0800
+@@ -24,7 +24,9 @@
+ %{
+
+ #include <assert.h>
++#ifndef __APPLE__
+ #include <malloc.h>
++#endif
+ #include "genksyms.h"
+
+ static int is_typedef;
+Index: linux-2.6.23-rc6/scripts/kallsyms.c
+===================================================================
+--- linux-2.6.23-rc6.orig/scripts/kallsyms.c 2007-09-21 16:23:51.000000000 +0800
++++ linux-2.6.23-rc6/scripts/kallsyms.c 2007-09-21 16:24:10.000000000 +0800
+@@ -28,6 +28,35 @@
+ #include <stdlib.h>
+ #include <string.h>
+ #include <ctype.h>
++#ifdef __APPLE__
++/* Darwin has no memmem implementation, this one is ripped of the uClibc-0.9.28 source */
++void *memmem (const void *haystack, size_t haystack_len,
++ const void *needle, size_t needle_len)
++{
++ const char *begin;
++ const char *const last_possible
++ = (const char *) haystack + haystack_len - needle_len;
++
++ if (needle_len == 0)
++ /* The first occurrence of the empty string is deemed to occur at
++ the beginning of the string. */
++ return (void *) haystack;
++
++ /* Sanity check, otherwise the loop might search through the whole
++ memory. */
++ if (__builtin_expect (haystack_len < needle_len, 0))
++ return NULL;
++
++ for (begin = (const char *) haystack; begin <= last_possible; ++begin)
++ if (begin[0] == ((const char *) needle)[0] &&
++ !memcmp ((const void *) &begin[1],
++ (const void *) ((const char *) needle + 1),
++ needle_len - 1))
++ return (void *) begin;
++
++ return NULL;
++}
++#endif
+
+ #define KSYM_NAME_LEN 128
+
+Index: linux-2.6.23-rc6/scripts/kconfig/Makefile
+===================================================================
+--- linux-2.6.23-rc6.orig/scripts/kconfig/Makefile 2007-09-21 16:23:51.000000000 +0800
++++ linux-2.6.23-rc6/scripts/kconfig/Makefile 2007-09-21 16:24:10.000000000 +0800
+@@ -88,6 +88,9 @@
+ # we really need to do so. (Do not call gcc as part of make mrproper)
+ HOST_EXTRACFLAGS = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ccflags)
+ HOST_LOADLIBES = $(shell $(CONFIG_SHELL) $(check-lxdialog) -ldflags $(HOSTCC))
++ifeq ($(shell uname -s),Darwin)
++HOST_LOADLIBES += -lncurses
++endif
+
+ HOST_EXTRACFLAGS += -DLOCALE
+
+Index: linux-2.6.23-rc6/scripts/mod/mk_elfconfig.c
+===================================================================
+--- linux-2.6.23-rc6.orig/scripts/mod/mk_elfconfig.c 2007-09-21 16:23:51.000000000 +0800
++++ linux-2.6.23-rc6/scripts/mod/mk_elfconfig.c 2007-09-21 16:24:10.000000000 +0800
+@@ -1,7 +1,11 @@
+ #include <stdio.h>
+ #include <stdlib.h>
+ #include <string.h>
++#ifndef __APPLE__
+ #include <elf.h>
++#else
++#include "../../../../../tools/sstrip/include/elf.h"
++#endif
+
+ int
+ main(int argc, char **argv)
+Index: linux-2.6.23-rc6/scripts/mod/modpost.h
+===================================================================
+--- linux-2.6.23-rc6.orig/scripts/mod/modpost.h 2007-09-21 16:23:51.000000000 +0800
++++ linux-2.6.23-rc6/scripts/mod/modpost.h 2007-09-21 16:24:10.000000000 +0800
+@@ -7,7 +7,11 @@
+ #include <sys/mman.h>
+ #include <fcntl.h>
+ #include <unistd.h>
++#ifndef __APPLE__
+ #include <elf.h>
++#else
++#include "../../../../../tools/sstrip/include/elf.h"
++#endif
+
+ #include "elfconfig.h"
+
--- /dev/null
+Index: linux-2.6.23-rc6/include/linux/stddef.h
+===================================================================
+--- linux-2.6.23-rc6.orig/include/linux/stddef.h 2007-09-21 16:23:51.000000000 +0800
++++ linux-2.6.23-rc6/include/linux/stddef.h 2007-09-21 16:24:10.000000000 +0800
+@@ -16,6 +16,7 @@
+ false = 0,
+ true = 1
+ };
++#endif /* __KERNEL__ */
+
+ #undef offsetof
+ #ifdef __compiler_offsetof
+@@ -23,6 +24,5 @@
+ #else
+ #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
+ #endif
+-#endif /* __KERNEL__ */
+
+ #endif
--- /dev/null
+Index: linux-2.6.23-rc6/scripts/gen_initramfs_list.sh
+===================================================================
+--- linux-2.6.23-rc6.orig/scripts/gen_initramfs_list.sh 2007-09-21 16:23:51.000000000 +0800
++++ linux-2.6.23-rc6/scripts/gen_initramfs_list.sh 2007-09-21 16:24:11.000000000 +0800
+@@ -125,7 +125,7 @@
+ str="${ftype} ${name} ${location} ${str}"
+ ;;
+ "nod")
+- local dev=`LC_ALL=C ls -l "${location}"`
++ local dev=`LC_ALL=C ls -l --time-style=locale "${location}"`
+ local maj=`field 5 ${dev}`
+ local min=`field 6 ${dev}`
+ maj=${maj%,}
+@@ -135,7 +135,7 @@
+ str="${ftype} ${name} ${str} ${dev} ${maj} ${min}"
+ ;;
+ "slink")
+- local target=`field 11 $(LC_ALL=C ls -l "${location}")`
++ local target=`field 11 $(LC_ALL=C ls -l --time-style=locale "${location}")`
+ str="${ftype} ${name} ${target} ${str}"
+ ;;
+ *)
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