package/base-files/files/sbin/sysupgrade

   1 #!/bin/sh
   2 . /lib/functions.sh
   3 . /lib/functions/system.sh
   4
   5 # initialize defaults
   6 RAMFS_COPY_BIN=""       # extra programs for temporary ramfs root
   7 RAMFS_COPY_DATA=""      # extra data files
   8 export MTD_CONFIG_ARGS=""
   9 export INTERACTIVE=0
  10 export VERBOSE=1
  11 export SAVE_CONFIG=1
  12 export SAVE_OVERLAY=0
  13 export SAVE_PARTITIONS=1
  14 export DELAY=
  15 export CONF_IMAGE=
  16 export CONF_BACKUP_LIST=0
  17 export CONF_BACKUP=
  18 export CONF_RESTORE=
  19 export NEED_IMAGE=
  20 export HELP=0
  21 export FORCE=0
  22 export TEST=0
  23
  24 # parse options
  25 while [ -n "$1" ]; do
  26         case "$1" in
  27                 -i) export INTERACTIVE=1;;
  28                 -d) export DELAY="$2"; shift;;
  29                 -v) export VERBOSE="$(($VERBOSE + 1))";;
  30                 -q) export VERBOSE="$(($VERBOSE - 1))";;
  31                 -n) export SAVE_CONFIG=0;;
  32                 -c) export SAVE_OVERLAY=1;;
  33                 -p) export SAVE_PARTITIONS=0;;
  34                 -b|--create-backup) export CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
  35                 -r|--restore-backup) export CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
  36                 -l|--list-backup) export CONF_BACKUP_LIST=1; break;;
  37                 -f) export CONF_IMAGE="$2"; shift;;
  38                 -F|--force) export FORCE=1;;
  39                 -T|--test) export TEST=1;;
  40                 -h|--help) export HELP=1; break;;
  41                 -*)
  42                         echo "Invalid option: $1"
  43                         exit 1
  44                 ;;
  45                 *) break;;
  46         esac
  47         shift;
  48 done
  49
  50 export CONFFILES=/tmp/sysupgrade.conffiles
  51 export CONF_TAR=/tmp/sysupgrade.tgz
  52
  53 export ARGV="$*"
  54 export ARGC="$#"
  55
  56 [ -z "$ARGV" -a -z "$NEED_IMAGE" -o $HELP -gt 0 ] && {
  57         cat <<EOF
  58 Usage: $0 [<upgrade-option>...] <image file or URL>
  59        $0 [-q] [-i] <backup-command> <file>
  60
  61 upgrade-option:
  62         -d <delay>   add a delay before rebooting
  63         -f <config>  restore configuration from .tar.gz (file or url)
  64         -i           interactive mode
  65         -c           attempt to preserve all changed files in /etc/
  66         -n           do not save configuration over reflash
  67         -p           do not attempt to restore the partition table after flash.
  68         -T | --test
  69                      Verify image and config .tar.gz but do not actually flash.
  70         -F | --force
  71                      Flash image even if image checks fail, this is dangerous!
  72         -q           less verbose
  73         -v           more verbose
  74         -h | --help  display this help
  75
  76 backup-command:
  77         -b | --create-backup <file>
  78                      create .tar.gz of files specified in sysupgrade.conf
  79                      then exit. Does not flash an image. If file is '-',
  80                      i.e. stdout, verbosity is set to 0 (i.e. quiet).
  81         -r | --restore-backup <file>
  82                      restore a .tar.gz created with sysupgrade -b
  83                      then exit. Does not flash an image. If file is '-',
  84                      the archive is read from stdin.
  85         -l | --list-backup
  86                      list the files that would be backed up when calling
  87                      sysupgrade -b. Does not create a backup file.
  88
  89 EOF
  90         exit 1
  91 }
  92
  93 [ -n "$ARGV" -a -n "$NEED_IMAGE" ] && {
  94         cat <<-EOF
  95                 -b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
  96                 Do not specify both -b|-r and a firmware image.
  97         EOF
  98         exit 1
  99 }
 100
 101 # prevent messages from clobbering the tarball when using stdout
 102 [ "$CONF_BACKUP" = "-" ] && export VERBOSE=0
 103
 104 add_uci_conffiles() {
 105         local file="$1"
 106         ( find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
 107                 /etc/sysupgrade.conf /lib/upgrade/keep.d/* 2>/dev/null) \
 108                 -type f -o -type l 2>/dev/null;
 109           opkg list-changed-conffiles ) | sort -u > "$file"
 110         return 0
 111 }
 112
 113 add_overlayfiles() {
 114         local file="$1"
 115         if [ -d /overlay/upper ]; then
 116                 local overlaydir="/overlay/upper"
 117         else
 118                 local overlaydir="/overlay"
 119         fi
 120         find $overlaydir/etc/ -type f -o -type l | sed \
 121                 -e 's,^/overlay\/upper/,/,' \
 122                 -e 's,^/overlay/,/,' \
 123                 -e '\,/META_[a-zA-Z0-9]*$,d' \
 124                 -e '\,/functions.sh$,d' \
 125                 -e '\,/[^/]*-opkg$,d' \
 126         > "$file"
 127         return 0
 128 }
 129
 130 # hooks
 131 sysupgrade_image_check="platform_check_image"
 132 [ $SAVE_OVERLAY = 0 -o ! -d /overlay/etc ] && \
 133         sysupgrade_init_conffiles="add_uci_conffiles" || \
 134         sysupgrade_init_conffiles="add_overlayfiles"
 135
 136 include /lib/upgrade
 137
 138 [ "$1" = "nand" ] && nand_upgrade_stage2 $@
 139
 140 do_save_conffiles() {
 141         local conf_tar="${1:-$CONF_TAR}"
 142
 143         [ -z "$(rootfs_type)" ] && {
 144                 echo "Cannot save config while running from ramdisk."
 145                 ask_bool 0 "Abort" && exit
 146                 return 0
 147         }
 148         run_hooks "$CONFFILES" $sysupgrade_init_conffiles
 149         ask_bool 0 "Edit config file list" && vi "$CONFFILES"
 150
 151         v "Saving config files..."
 152         [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
 153         tar c${TAR_V}zf "$conf_tar" -T "$CONFFILES" 2>/dev/null
 154
 155         rm -f "$CONFFILES"
 156 }
 157
 158 if [ $CONF_BACKUP_LIST -eq 1 ]; then
 159         add_uci_conffiles "$CONFFILES"
 160         cat "$CONFFILES"
 161         rm -f "$CONFFILES"
 162         exit 0
 163 fi
 164
 165 if [ -n "$CONF_BACKUP" ]; then
 166         do_save_conffiles "$CONF_BACKUP"
 167         exit $?
 168 fi
 169
 170 if [ -n "$CONF_RESTORE" ]; then
 171         if [ "$CONF_RESTORE" != "-" ] && [ ! -f "$CONF_RESTORE" ]; then
 172                 echo "Backup archive '$CONF_RESTORE' not found."
 173                 exit 1
 174         fi
 175
 176         [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
 177         tar -C / -x${TAR_V}zf "$CONF_RESTORE"
 178         exit $?
 179 fi
 180
 181 type platform_check_image >/dev/null 2>/dev/null || {
 182         echo "Firmware upgrade is not implemented for this platform."
 183         exit 1
 184 }
 185
 186 for check in $sysupgrade_image_check; do
 187         ( eval "$check \"\$ARGV\"" ) || {
 188                 if [ $FORCE -eq 1 ]; then
 189                         echo "Image check '$check' failed but --force given - will update anyway!"
 190                         break
 191                 else
 192                         echo "Image check '$check' failed."
 193                         exit 1
 194                 fi
 195         }
 196 done
 197
 198 if [ -n "$CONF_IMAGE" ]; then
 199         case "$(get_magic_word $CONF_IMAGE cat)" in
 200                 # .gz files
 201                 1f8b) ;;
 202                 *)
 203                         echo "Invalid config file. Please use only .tar.gz files"
 204                         exit 1
 205                 ;;
 206         esac
 207         get_image "$CONF_IMAGE" "cat" > "$CONF_TAR"
 208         export SAVE_CONFIG=1
 209 elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
 210         [ $TEST -eq 1 ] || do_save_conffiles
 211         export SAVE_CONFIG=1
 212 else
 213         export SAVE_CONFIG=0
 214 fi
 215
 216 if [ $TEST -eq 1 ]; then
 217         exit 0
 218 fi
 219
 220 run_hooks "" $sysupgrade_pre_upgrade
 221
 222 # Some platforms/devices may want different sysupgrade process, e.g. without
 223 # killing processes yet or calling ubus system upgrade method.
 224 # This is needed e.g. on NAND devices where we just want to trigger stage1 at
 225 # this point.
 226 if type 'platform_pre_upgrade' >/dev/null 2>/dev/null; then
 227         platform_pre_upgrade "$ARGV"
 228 fi
 229
 230 ubus call system upgrade
 231 touch /tmp/sysupgrade
 232
 233 if [ ! -f /tmp/failsafe ] ; then
 234         kill_remaining TERM
 235         sleep 3
 236         kill_remaining KILL
 237 fi
 238
 239 if [ -n "$(rootfs_type)" ]; then
 240         v "Switching to ramdisk..."
 241         run_ramfs '. /lib/functions.sh; include /lib/upgrade; do_upgrade'
 242 else
 243         do_upgrade
 244 fi