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