package/base-files/files/sbin/sysupgrade

   1 #!/bin/sh
   2 . /etc/functions.sh
   3
   4 # initialize defaults
   5 RAMFS_COPY_BIN=""       # extra programs for temporary ramfs root
   6 RAMFS_COPY_DATA=""      # extra data files
   7 export INTERACTIVE=0
   8 export VERBOSE=1
   9 export SAVE_CONFIG=1
  10 export SAVE_OVERLAY=0
  11 export DELAY=
  12 export CONF_IMAGE=
  13
  14 # parse options
  15 while [ -n "$1" ]; do
  16         case "$1" in
  17                 -i) export INTERACTIVE=1;;
  18                 -d) export DELAY="$2"; shift;;
  19                 -v) export VERBOSE="$(($VERBOSE + 1))";;
  20                 -q) export VERBOSE="$(($VERBOSE - 1))";;
  21                 -n) export SAVE_CONFIG=0;;
  22                 -c) export SAVE_OVERLAY=1;;
  23                 -f) export CONF_IMAGE="$2"; shift;;
  24                 -*)
  25                         echo "Invalid option: $1"
  26                         exit 1
  27                 ;;
  28                 *) break;;
  29         esac
  30         shift;
  31 done
  32
  33 export CONFFILES=/tmp/sysupgrade.conffiles
  34 export CONF_TAR=/tmp/sysupgrade.tgz
  35
  36 export ARGV="$*"
  37 export ARGC="$#"
  38
  39 [ -z "$ARGV" ] && {
  40         cat <<EOF
  41 Usage: $0 [options] <image file or URL>
  42
  43 Options:
  44         -d <delay>   add a delay before rebooting
  45         -f <config>  restore configuration from .tar.gz (file or url)
  46         -i           interactive mode
  47         -c           attempt to preserve all changed files in /etc/
  48         -n           do not save configuration over reflash
  49         -q           less verbose
  50         -v           more verbose
  51
  52 EOF
  53         exit 1
  54 }
  55
  56 add_uci_conffiles() {
  57         local file="$1"
  58         find /etc/config /etc/passwd /etc/group /etc/dropbear \
  59                 /etc/firewall.user /etc/rc.local -type f > "$file"
  60         return 0
  61 }
  62
  63 add_overlayfiles() {
  64         local file="$1"
  65         find /overlay/etc/ -type f | sed \
  66                 -e 's,^/overlay/,/,' \
  67                 -e '\,/META_[a-zA-Z0-9]*$,d' \
  68                 -e '\,/functions.sh$,d' \
  69                 -e '\,/[^/]*-opkg$,d' \
  70         > "$file"
  71         return 0
  72 }
  73
  74 # hooks
  75 sysupgrade_image_check="platform_check_image"
  76 [ $SAVE_OVERLAY = 0 -o ! -d /overlay/etc ] && \
  77         sysupgrade_init_conffiles="add_uci_conffiles" || \
  78         sysupgrade_init_conffiles="add_overlayfiles"
  79
  80 include /lib/upgrade
  81
  82 do_save_conffiles() {
  83         [ -z "$(rootfs_type)" ] && {
  84                 echo "Cannot save config while running from ramdisk."
  85                 ask_bool 0 "Abort" && exit
  86                 return 0
  87         }
  88         run_hooks "$CONFFILES" $sysupgrade_init_conffiles
  89         ask_bool 0 "Edit config file list" && vi "$CONFFILES"
  90
  91         v "Saving config files..."
  92         [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
  93         tar c${TAR_V}zf "$CONF_TAR" -T "$CONFFILES" 2>/dev/null
  94 }
  95
  96 type platform_check_image >/dev/null 2>/dev/null || {
  97         echo "Firmware upgrade is not implemented for this platform."
  98         exit 1
  99 }
 100
 101 for check in $sysupgrade_image_check; do
 102         ( eval "$check \"\$ARGV\"" ) || {
 103                 echo "Image check '$check' failed."
 104                 exit 1
 105         }
 106 done
 107
 108 if [ -n "$CONF_IMAGE" ]; then
 109         case "$(get_magic_word $CONF_IMAGE cat)" in
 110                 # .gz files
 111                 1f8b) ;;
 112                 *)
 113                         echo "Invalid config file. Please use only .tar.gz files"
 114                         exit 1
 115                 ;;
 116         esac
 117         get_image "$CONF_IMAGE" "cat" > "$CONF_TAR"
 118         export SAVE_CONFIG=1
 119 elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
 120         do_save_conffiles
 121         export SAVE_CONFIG=1
 122 else
 123         export SAVE_CONFIG=0
 124 fi
 125 run_hooks "" $sysupgrade_pre_upgrade
 126
 127 if [ -n "$(rootfs_type)" ]; then
 128         v "Switching to ramdisk..."
 129         run_ramfs '. /etc/functions.sh; include /lib/upgrade; do_upgrade'
 130 else
 131         do_upgrade
 132 fi