5 [ -x /usr
/bin
/ldd
] || ldd
() { LD_TRACE_LOADED_OBJECTS
=1 $
*; }
6 libs
() { ldd $
* 2>/dev
/null |
sed -r 's/(.* => )?(.*) .*/\2/'; }
8 install_file
() { # <file> [ <file> ... ]
10 dest
="$RAM_ROOT/$file"
11 [ -f $file -a ! -f $dest ] && {
12 dir
="$(dirname $dest)"
19 install_bin
() { # <file> [ <symlink> ... ]
22 [ -x "$src" ] && files
="$src $(libs $src)"
25 for link
in "$@"; do {
26 dest
="$RAM_ROOT/$link"
27 dir
="$(dirname $dest)"
29 [ -f "$dest" ] ||
ln -s $src $dest
33 supivot
() { # <new_root> <old_root>
34 /bin
/mount |
grep "on $1 type" 2>&- 1>&- ||
/bin
/mount
-o bind $1 $1
35 mkdir
-p $1$2 $1/proc
$1/sys
$1/dev
$1/tmp
$1/overlay
&& \
36 /bin
/mount
-o noatime
,move
/proc
$1/proc
&& \
37 pivot_root
$1 $1$2 ||
{
42 /bin
/mount
-o noatime
,move
$2/sys
/sys
43 /bin
/mount
-o noatime
,move
$2/dev
/dev
44 /bin
/mount
-o noatime
,move
$2/tmp
/tmp
45 /bin
/mount
-o noatime
,move
$2/overlay
/overlay
2>&-
49 run_ramfs
() { # <command> [...]
50 install_bin
/bin
/busybox
/bin
/ash
/bin
/sh
/bin
/mount
/bin
/umount \
51 /sbin
/pivot_root
/sbin
/reboot
/bin
/sync
/bin
/dd /bin
/grep \
52 /bin
/cp /bin
/mv /bin
/tar /usr
/bin
/md5sum "/usr/bin/[" /bin
/dd \
53 /bin
/vi
/bin
/ls /bin
/cat /usr
/bin
/awk /usr
/bin
/hexdump \
54 /bin
/sleep /bin
/zcat
/usr
/bin
/bzcat
/usr
/bin
/printf /usr
/bin
/wc \
55 /bin
/cut
/usr
/bin
/printf /bin
/sync
/bin
/mkdir
/bin
/rmdir \
56 /bin
/rm /usr
/bin
/basename /bin
/kill /bin
/chmod /usr
/bin
/find \
59 install_bin
/bin
/uclient-fetch
/bin
/wget
61 install_bin
/sbin
/mount_root
62 install_bin
/sbin
/snapshot
63 install_bin
/sbin
/snapshot_tool
64 install_bin
/usr
/sbin
/ubiupdatevol
65 install_bin
/usr
/sbin
/ubiattach
66 install_bin
/usr
/sbin
/ubiblock
67 install_bin
/usr
/sbin
/ubiformat
68 install_bin
/usr
/sbin
/ubidetach
69 install_bin
/usr
/sbin
/ubirsvol
70 install_bin
/usr
/sbin
/ubirmvol
71 install_bin
/usr
/sbin
/ubimkvol
72 install_bin
/usr
/sbin
/partx
73 install_bin
/usr
/sbin
/losetup
74 install_bin
/usr
/sbin
/mkfs.ext4
75 for file in $RAMFS_COPY_BIN; do
76 install_bin
${file//:/ }
78 install_file
/etc
/resolv.conf
/lib
/*.sh
/lib
/functions
/*.sh
/lib
/upgrade
/*.sh
$RAMFS_COPY_DATA
80 [ -L "/lib64" ] && ln -s /lib
$RAM_ROOT/lib64
82 supivot
$RAM_ROOT /mnt ||
{
83 echo "Failed to switch over to ramfs. Please reboot."
87 /bin
/mount
-o remount
,ro
/mnt
90 grep /overlay
/proc
/mounts
> /dev
/null
&& {
91 /bin
/mount
-o noatime
,remount
,ro
/overlay
92 /bin
/umount
-l /overlay
95 # spawn a new shell from ramdisk to reduce the probability of cache issues
96 exec /bin
/busybox ash
-c "$*"
99 kill_remaining
() { # [ <signal> ]
100 local sig
="${1:-TERM}"
101 echo -n "Sending $sig to remaining processes ... "
104 local my_ppid
=$
(cut
-d' ' -f4 /proc
/$my_pid/stat
)
105 local my_ppisupgraded
=
106 grep -q upgraded
/proc
/$my_ppid/cmdline
>/dev
/null
&& {
107 local my_ppisupgraded
=1
111 for stat
in /proc
/[0-9]*/stat
; do
112 [ -f "$stat" ] ||
continue
114 local pid name state ppid rest
115 read pid name state ppid rest
< $stat
116 name
="${name#(}"; name
="${name%)}"
119 read cmdline
< /proc
/$pid/cmdline
121 # Skip kernel threads
122 [ -n "$cmdline" ] ||
continue
124 if [ $$
-eq 1 ] ||
[ $my_ppid -eq 1 ] && [ -n "$my_ppisupgraded" ]; then
125 # Running as init process, kill everything except me
126 if [ $pid -ne $$
] && [ $pid -ne $my_ppid ]; then
128 kill -$sig $pid 2>/dev
/null
132 # Skip essential services
133 *procd
*|
*ash
*|
*init
*|
*watchdog
*|
*ssh*|
*dropbear
*|
*telnet*|
*login
*|
*hostapd
*|
*wpa_supplicant
*|
*nas
*|
*relayd
*) : ;;
137 if [ $pid -ne $$
] && [ $ppid -ne $$
]; then
139 kill -$sig $pid 2>/dev
/null
149 local arg
="$1"; shift
156 local default
="$1"; shift;
157 local answer
="$default"
159 [ "$INTERACTIVE" -eq 1 ] && {
161 0) echo -n "$* (y/N): ";;
162 *) echo -n "$* (Y/n): ";;
168 *) answer
="$default";;
175 [ "$VERBOSE" -ge 1 ] && echo "$@"
179 /bin
/mount |
awk '($3 ~ /^\/$/) && ($5 !~ /rootfs/) { print $5 }'
182 get_image
() { # <source> [ <command> ]
188 http
://*|
ftp://*) cmd
="wget -O- -q";;
191 if [ -z "$conc" ]; then
192 local magic
="$(eval $cmd \"$from\" 2>/dev/null | dd bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x
"')"
199 eval "$cmd \"$from\" 2>/dev/null ${conc:+| $conc}"
203 (get_image
"$@" |
dd bs
=2 count
=1 |
hexdump -v -n 2 -e '1/1 "%02x"') 2>/dev
/null
207 (get_image
"$@" |
dd bs
=4 count
=1 |
hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev
/null
210 export_bootdevice
() {
211 local cmdline uuid disk uevent
212 local MAJOR MINOR DEVNAME DEVTYPE
214 if read cmdline
< /proc
/cmdline
; then
217 disk
="${cmdline##*block2mtd=}"
221 disk
="${cmdline##*root=}"
227 PARTUUID
=[a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
][a-f0-9
]-02)
228 uuid
="${disk#PARTUUID=}"
230 for disk
in $
(find /dev
-type b
); do
231 set -- $
(dd if=$disk bs
=1 skip
=440 count
=4 2>/dev
/null |
hexdump -v -e '4/1 "%02x "')
232 if [ "$4$3$2$1" = "$uuid" ]; then
233 uevent
="/sys/class/block/${disk##*/}/uevent"
239 uevent
="/sys/class/block/${disk##*/}/uevent"
243 if [ -e "$uevent" ]; then
246 export BOOTDEV_MAJOR
=$MAJOR
247 export BOOTDEV_MINOR
=$MINOR
255 export_partdevice
() {
256 local var
="$1" offset
="$2"
257 local uevent MAJOR MINOR DEVNAME DEVTYPE
259 for uevent
in /sys
/class
/block
/*/uevent
; do
261 if [ $BOOTDEV_MAJOR = $MAJOR -a $
(($BOOTDEV_MINOR + $offset)) = $MINOR -a -b "/dev/$DEVNAME" ]; then
262 export "$var=$DEVNAME"
270 get_partitions
() { # <device> <filename>
274 if [ -b "$disk" -o -f "$disk" ]; then
275 v
"Reading partition table from $filename..."
277 local magic
="$(hexdump -v -n 2 -s 0x1FE -e '1/2 "0x
%04X
"' "$disk")"
278 if [ "$magic" != 0xAA55 ]; then
279 v
"Invalid partition table on $disk"
283 rm -f "/tmp/partmap.$filename"
286 for part
in 1 2 3 4; do
287 set -- $
(hexdump -v -n 12 -s "$((0x1B2 + $part * 16))" -e '3/4 "0x%08X "' "$disk")
289 local type="$(($1 % 256))"
293 [ $type -gt 0 ] ||
continue
295 printf "%2d %5d %7d\n" $part $lba $num >> "/tmp/partmap.$filename"
300 jffs2_copy_config
() {
301 if grep rootfs_data
/proc
/mtd
>/dev
/null
; then
303 mtd
-e rootfs_data jffs2write
"$CONF_TAR" rootfs_data
306 mtd jffs2write
"$CONF_TAR" rootfs
310 # Flash firmware to MTD partition
312 # $(1): path to image
313 # $(2): (optional) pipe command to extract firmware, e.g. dd bs=n skip=m
314 default_do_upgrade
() {
316 if [ "$SAVE_CONFIG" -eq 1 ]; then
317 get_image
"$1" "$2" | mtd
$MTD_CONFIG_ARGS -j "$CONF_TAR" write - "${PART_NAME:-image}"
319 get_image
"$1" "$2" | mtd
write - "${PART_NAME:-image}"
324 v
"Performing system upgrade..."
325 if type 'platform_do_upgrade' >/dev
/null
2>/dev
/null
; then
326 platform_do_upgrade
"$ARGV"
328 default_do_upgrade
"$ARGV"
331 if [ "$SAVE_CONFIG" -eq 1 ] && type 'platform_copy_config' >/dev
/null
2>/dev
/null
; then
335 v
"Upgrade completed"
336 [ -n "$DELAY" ] && sleep "$DELAY"
337 ask_bool
1 "Reboot" && {
338 v
"Rebooting system..."
342 echo b
2>/dev
/null
>/proc
/sysrq-trigger