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