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