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 DELAY=
  14 export CONF_IMAGE=
  15 export CONF_BACKUP_LIST=0
  16 export CONF_BACKUP=
  17 export CONF_RESTORE=
  18 export NEED_IMAGE=
  19 export HELP=0
  20 export FORCE=0
  21 export TEST=0
  22
  23 # parse options
  24 while [ -n "$1" ]; do
  25         case "$1" in
  26                 -i) export INTERACTIVE=1;;
  27                 -d) export DELAY="$2"; shift;;
  28                 -v) export VERBOSE="$(($VERBOSE + 1))";;
  29                 -q) export VERBOSE="$(($VERBOSE - 1))";;
  30                 -n) export SAVE_CONFIG=0;;
  31                 -c) export SAVE_OVERLAY=1;;
  32                 -b|--create-backup) export CONF_BACKUP="$2" NEED_IMAGE=1; shift;;
  33                 -r|--restore-backup) export CONF_RESTORE="$2" NEED_IMAGE=1; shift;;
  34                 -l|--list-backup) export CONF_BACKUP_LIST=1; break;;
  35                 -f) export CONF_IMAGE="$2"; shift;;
  36                 -F|--force) export FORCE=1;;
  37                 -T|--test) export TEST=1;;
  38                 -h|--help) export HELP=1; break;;
  39                 -*)
  40                         echo "Invalid option: $1"
  41                         exit 1
  42                 ;;
  43                 *) break;;
  44         esac
  45         shift;
  46 done
  47
  48 export CONFFILES=/tmp/sysupgrade.conffiles
  49 export CONF_TAR=/tmp/sysupgrade.tgz
  50
  51 export ARGV="$*"
  52 export ARGC="$#"
  53
  54 [ -z "$ARGV" -a -z "$NEED_IMAGE" -o $HELP -gt 0 ] && {
  55         cat <<EOF
  56 Usage: $0 [<upgrade-option>...] <image file or URL>
  57        $0 [-q] [-i] <backup-command> <file>
  58
  59 upgrade-option:
  60         -d <delay>   add a delay before rebooting
  61         -f <config>  restore configuration from .tar.gz (file or url)
  62         -i           interactive mode
  63         -c           attempt to preserve all changed files in /etc/
  64         -n           do not save configuration over reflash
  65         -T | --test
  66                      Verify image and config .tar.gz but do not actually flash.
  67         -F | --force
  68                      Flash image even if image checks fail, this is dangerous!
  69         -q           less verbose
  70         -v           more verbose
  71         -h | --help  display this help
  72
  73 backup-command:
  74         -b | --create-backup <file>
  75                      create .tar.gz of files specified in sysupgrade.conf
  76                      then exit. Does not flash an image. If file is '-',
  77                      i.e. stdout, verbosity is set to 0 (i.e. quiet).
  78         -r | --restore-backup <file>
  79                      restore a .tar.gz created with sysupgrade -b
  80                      then exit. Does not flash an image. If file is '-',
  81                      the archive is read from stdin.
  82         -l | --list-backup
  83                      list the files that would be backed up when calling
  84                      sysupgrade -b. Does not create a backup file.
  85
  86 EOF
  87         exit 1
  88 }
  89
  90 [ -n "$ARGV" -a -n "$NEED_IMAGE" ] && {
  91         cat <<-EOF
  92                 -b|--create-backup and -r|--restore-backup do not perform a firmware upgrade.
  93                 Do not specify both -b|-r and a firmware image.
  94         EOF
  95         exit 1
  96 }
  97
  98 # prevent messages from clobbering the tarball when using stdout
  99 [ "$CONF_BACKUP" = "-" ] && export VERBOSE=0
 100
 101 add_uci_conffiles() {
 102         local file="$1"
 103         ( find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
 104                 /etc/sysupgrade.conf /lib/upgrade/keep.d/* 2>/dev/null) \
 105                 -type f 2>/dev/null;
 106           opkg list-changed-conffiles ) | sort -u > "$file"
 107         return 0
 108 }
 109
 110 add_overlayfiles() {
 111         local file="$1"
 112         find /overlay/etc/ -type f | sed \
 113                 -e 's,^/overlay/,/,' \
 114                 -e '\,/META_[a-zA-Z0-9]*$,d' \
 115                 -e '\,/functions.sh$,d' \
 116                 -e '\,/[^/]*-opkg$,d' \
 117         > "$file"
 118         return 0
 119 }
 120
 121 # hooks
 122 sysupgrade_image_check="platform_check_image"
 123 [ $SAVE_OVERLAY = 0 -o ! -d /overlay/etc ] && \
 124         sysupgrade_init_conffiles="add_uci_conffiles" || \
 125         sysupgrade_init_conffiles="add_overlayfiles"
 126
 127 include /lib/upgrade
 128
 129 do_save_conffiles() {
 130         local conf_tar="${1:-$CONF_TAR}"
 131
 132         [ -z "$(rootfs_type)" ] && {
 133                 echo "Cannot save config while running from ramdisk."
 134                 ask_bool 0 "Abort" && exit
 135                 return 0
 136         }
 137         run_hooks "$CONFFILES" $sysupgrade_init_conffiles
 138         ask_bool 0 "Edit config file list" && vi "$CONFFILES"
 139
 140         v "Saving config files..."
 141         [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
 142         tar c${TAR_V}zf "$conf_tar" -T "$CONFFILES" 2>/dev/null
 143
 144         rm -f "$CONFFILES"
 145 }
 146
 147 if [ $CONF_BACKUP_LIST -eq 1 ]; then
 148         add_uci_conffiles "$CONFFILES"
 149         cat "$CONFFILES"
 150         rm -f "$CONFFILES"
 151         exit 0
 152 fi
 153
 154 if [ -n "$CONF_BACKUP" ]; then
 155         do_save_conffiles "$CONF_BACKUP"
 156         exit $?
 157 fi
 158
 159 if [ -n "$CONF_RESTORE" ]; then
 160         if [ "$CONF_RESTORE" != "-" ] && [ ! -f "$CONF_RESTORE" ]; then
 161                 echo "Backup archive '$CONF_RESTORE' not found."
 162                 exit 1
 163         fi
 164
 165         [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
 166         tar -C / -x${TAR_V}zf "$CONF_RESTORE"
 167         exit $?
 168 fi
 169
 170 type platform_check_image >/dev/null 2>/dev/null || {
 171         echo "Firmware upgrade is not implemented for this platform."
 172         exit 1
 173 }
 174
 175 for check in $sysupgrade_image_check; do
 176         ( eval "$check \"\$ARGV\"" ) || {
 177                 if [ $FORCE -eq 1 ]; then
 178                         echo "Image check '$check' failed but --force given - will update anyway!"
 179                         break
 180                 else
 181                         echo "Image check '$check' failed."
 182                         exit 1
 183                 fi
 184         }
 185 done
 186
 187 if [ -n "$CONF_IMAGE" ]; then
 188         case "$(get_magic_word $CONF_IMAGE cat)" in
 189                 # .gz files
 190                 1f8b) ;;
 191                 *)
 192                         echo "Invalid config file. Please use only .tar.gz files"
 193                         exit 1
 194                 ;;
 195         esac
 196         get_image "$CONF_IMAGE" "cat" > "$CONF_TAR"
 197         export SAVE_CONFIG=1
 198 elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
 199         [ $TEST -eq 1 ] || do_save_conffiles
 200         export SAVE_CONFIG=1
 201 else
 202         export SAVE_CONFIG=0
 203 fi
 204
 205 if [ $TEST -eq 1 ]; then
 206         exit 0
 207 fi
 208
 209 run_hooks "" $sysupgrade_pre_upgrade
 210
 211 ubus call system upgrade
 212 touch /tmp/sysupgrade
 213
 214 if [ ! -f /tmp/failsafe ] ; then
 215         kill_remaining TERM
 216         sleep 3
 217         kill_remaining KILL
 218 fi
 219
 220 if [ -n "$(rootfs_type)" ]; then
 221         v "Switching to ramdisk..."
 222         run_ramfs '. /lib/functions.sh; include /lib/upgrade; do_upgrade'
 223 else
 224         do_upgrade
 225 fi