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