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