package/base-files/files/sbin/sysupgrade

   1 #!/bin/sh
   2 . /lib/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 export CONF_BACKUP=
  14 export CONF_RESTORE=
  15 export NEED_IMAGE=
  16 export HELP=0
  17 export FORCE=0
  18 export TEST=0
  19
  20 # parse options
  21 while [ -n "$1" ]; do
  22         case "$1" in
  23                 -i) export INTERACTIVE=1;;
  24                 -d) export DELAY="$2"; shift;;
  25                 -v) export VERBOSE="$(($VERBOSE + 1))";;
  26                 -q) export VERBOSE="$(($VERBOSE - 1))";;
  27                 -n) export SAVE_CONFIG=0;;
  28                 -c) export SAVE_OVERLAY=1;;
  29                 -b|--create-backup) export CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
  30                 -r|--restore-backup) export CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
  31                 -f) export CONF_IMAGE="$2"; shift;;
  32                 -F|--force) export FORCE=1;;
  33                 -T|--test) export TEST=1;;
  34                 -h|--help) export HELP=1; break;;
  35                 -*)
  36                         echo "Invalid option: $1"
  37                         exit 1
  38                 ;;
  39                 *) break;;
  40         esac
  41         shift;
  42 done
  43
  44 export CONFFILES=/tmp/sysupgrade.conffiles
  45 export CONF_TAR=/tmp/sysupgrade.tgz
  46
  47 export ARGV="$*"
  48 export ARGC="$#"
  49
  50 [ -z "$ARGV" -a -z "$NEED_IMAGE" -o $HELP -gt 0 ] && {
  51         cat <<EOF
  52 Usage: $0 [<upgrade-option>...] <image file or URL>
  53        $0 [-q] [-i] <backup-command> <file>
  54
  55 upgrade-option:
  56         -d <delay>   add a delay before rebooting
  57         -f <config>  restore configuration from .tar.gz (file or url)
  58         -i           interactive mode
  59         -c           attempt to preserve all changed files in /etc/
  60         -n           do not save configuration over reflash
  61         -T | --test
  62                      Verify image and config .tar.gz but do not actually flash.
  63         -F | --force
  64                      Flash image even if image checks fail, this is dangerous!
  65         -q           less verbose
  66         -v           more verbose
  67         -h | --help  display this help
  68
  69 backup-command:
  70         -b | --create-backup <file>
  71                      create .tar.gz of files specified in sysupgrade.conf
  72                      then exit. Does not flash an image. If file is '-',
  73                      i.e. stdout, verbosity is set to 0 (i.e. quiet).
  74         -r | --restore-backup <file>
  75                      restore a .tar.gz created with sysupgrade -b
  76                      then exit. Does not flash an image. If file is '-',
  77                      the archive is read from stdin.
  78
  79 EOF
  80         exit 1
  81 }
  82
  83 [ -n "$ARGV" -a -n "$NEED_IMAGE" ] && {
  84         cat <<-EOF
  85                 -b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
  86                 Do not specify both -b|-r and a firmware image.
  87         EOF
  88         exit 1
  89 }
  90
  91 # prevent messages from clobbering the tarball when using stdout
  92 [ "$CONF_BACKUP" = "-" ] && export VERBOSE=0
  93
  94 add_uci_conffiles() {
  95         local file="$1"
  96         ( find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
  97                 /etc/sysupgrade.conf /lib/upgrade/keep.d/* 2>/dev/null) \
  98                 -type f 2>/dev/null;
  99           opkg list-changed-conffiles ) | sort -u > "$file"
 100         return 0
 101 }
 102
 103 add_overlayfiles() {
 104         local file="$1"
 105         find /overlay/etc/ -type f | sed \
 106                 -e 's,^/overlay/,/,' \
 107                 -e '\,/META_[a-zA-Z0-9]*$,d' \
 108                 -e '\,/functions.sh$,d' \
 109                 -e '\,/[^/]*-opkg$,d' \
 110         > "$file"
 111         return 0
 112 }
 113
 114 # hooks
 115 sysupgrade_image_check="platform_check_image"
 116 [ $SAVE_OVERLAY = 0 -o ! -d /overlay/etc ] && \
 117         sysupgrade_init_conffiles="add_uci_conffiles" || \
 118         sysupgrade_init_conffiles="add_overlayfiles"
 119
 120 include /lib/upgrade
 121
 122 do_save_conffiles() {
 123         local conf_tar="${1:-$CONF_TAR}"
 124
 125         [ -z "$(rootfs_type)" ] && {
 126                 echo "Cannot save config while running from ramdisk."
 127                 ask_bool 0 "Abort" && exit
 128                 return 0
 129         }
 130         run_hooks "$CONFFILES" $sysupgrade_init_conffiles
 131         ask_bool 0 "Edit config file list" && vi "$CONFFILES"
 132
 133         v "Saving config files..."
 134         [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
 135         tar c${TAR_V}zf "$conf_tar" -T "$CONFFILES" 2>/dev/null
 136 }
 137
 138 if [ -n "$CONF_BACKUP" ]; then
 139         do_save_conffiles "$CONF_BACKUP"
 140         exit $?
 141 fi
 142
 143 if [ -n "$CONF_RESTORE" ]; then
 144         if [ "$CONF_RESTORE" != "-" ] && [ ! -f "$CONF_RESTORE" ]; then
 145                 echo "Backup archive '$CONF_RESTORE' not found."
 146                 exit 1
 147         fi
 148
 149         [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
 150         tar -C / -x${TAR_V}zf "$CONF_RESTORE"
 151         exit $?
 152 fi
 153
 154 type platform_check_image >/dev/null 2>/dev/null || {
 155         echo "Firmware upgrade is not implemented for this platform."
 156         exit 1
 157 }
 158
 159 for check in $sysupgrade_image_check; do
 160         ( eval "$check \"\$ARGV\"" ) || {
 161                 if [ $FORCE -eq 1 ]; then
 162                         echo "Image check '$check' failed but --force given - will update anyway!"
 163                         break
 164                 else
 165                         echo "Image check '$check' failed."
 166                         exit 1
 167                 fi
 168         }
 169 done
 170
 171 if [ -n "$CONF_IMAGE" ]; then
 172         case "$(get_magic_word $CONF_IMAGE cat)" in
 173                 # .gz files
 174                 1f8b) ;;
 175                 *)
 176                         echo "Invalid config file. Please use only .tar.gz files"
 177                         exit 1
 178                 ;;
 179         esac
 180         get_image "$CONF_IMAGE" "cat" > "$CONF_TAR"
 181         export SAVE_CONFIG=1
 182 elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
 183         [ $TEST -eq 1 ] || do_save_conffiles
 184         export SAVE_CONFIG=1
 185 else
 186         export SAVE_CONFIG=0
 187 fi
 188
 189 if [ $TEST -eq 1 ]; then
 190         exit 0
 191 fi
 192
 193 run_hooks "" $sysupgrade_pre_upgrade
 194
 195 ubus call system upgrade
 196 touch /tmp/sysupgrade
 197
 198 kill_remaining TERM
 199 sleep 3
 200 kill_remaining KILL
 201
 202 if [ -n "$(rootfs_type)" ]; then
 203         v "Switching to ramdisk..."
 204         run_ramfs '. /lib/functions.sh; include /lib/upgrade; do_upgrade'
 205 else
 206         do_upgrade
 207 fi