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="$1"
  58         ( find /etc/config /etc/passwd /etc/group /etc/dropbear \
  59                 /etc/firewall.user /etc/rc.local -type f;
  60           opkg list-changed-conffiles ) | sort -u > "$file"
  61         return 0
  62 }
  63
  64 add_overlayfiles() {
  65         local file="$1"
  66         find /overlay/etc/ -type f | sed \
  67                 -e 's,^/overlay/,/,' \
  68                 -e '\,/META_[a-zA-Z0-9]*$,d' \
  69                 -e '\,/functions.sh$,d' \
  70                 -e '\,/[^/]*-opkg$,d' \
  71         > "$file"
  72         return 0
  73 }
  74
  75 # hooks
  76 sysupgrade_image_check="platform_check_image"
  77 [ $SAVE_OVERLAY = 0 -o ! -d /overlay/etc ] && \
  78         sysupgrade_init_conffiles="add_uci_conffiles" || \
  79         sysupgrade_init_conffiles="add_overlayfiles"
  80
  81 include /lib/upgrade
  82
  83 do_save_conffiles() {
  84         [ -z "$(rootfs_type)" ] && {
  85                 echo "Cannot save config while running from ramdisk."
  86                 ask_bool 0 "Abort" && exit
  87                 return 0
  88         }
  89         run_hooks "$CONFFILES" $sysupgrade_init_conffiles
  90         ask_bool 0 "Edit config file list" && vi "$CONFFILES"
  91
  92         v "Saving config files..."
  93         [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
  94         tar c${TAR_V}zf "$CONF_TAR" -T "$CONFFILES" 2>/dev/null
  95 }
  96
  97 type platform_check_image >/dev/null 2>/dev/null || {
  98         echo "Firmware upgrade is not implemented for this platform."
  99         exit 1
 100 }
 101
 102 for check in $sysupgrade_image_check; do
 103         ( eval "$check \"\$ARGV\"" ) || {
 104                 echo "Image check '$check' failed."
 105                 exit 1
 106         }
 107 done
 108
 109 if [ -n "$CONF_IMAGE" ]; then
 110         case "$(get_magic_word $CONF_IMAGE cat)" in
 111                 # .gz files
 112                 1f8b) ;;
 113                 *)
 114                         echo "Invalid config file. Please use only .tar.gz files"
 115                         exit 1
 116                 ;;
 117         esac
 118         get_image "$CONF_IMAGE" "cat" > "$CONF_TAR"
 119         export SAVE_CONFIG=1
 120 elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
 121         do_save_conffiles
 122         export SAVE_CONFIG=1
 123 else
 124         export SAVE_CONFIG=0
 125 fi
 126 run_hooks "" $sysupgrade_pre_upgrade
 127
 128 if [ -n "$(rootfs_type)" ]; then
 129         v "Switching to ramdisk..."
 130         run_ramfs '. /etc/functions.sh; include /lib/upgrade; do_upgrade'
 131 else
 132         do_upgrade
 133 fi