package/base-files/files/sbin/sysupgrade

   1 #!/bin/sh
   2 . /etc/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 HELP=0
  15
  16 # parse options
  17 while [ -n "$1" ]; do
  18         case "$1" in
  19                 -i) export INTERACTIVE=1;;
  20                 -d) export DELAY="$2"; shift;;
  21                 -v) export VERBOSE="$(($VERBOSE + 1))";;
  22                 -q) export VERBOSE="$(($VERBOSE - 1))";;
  23                 -n) export SAVE_CONFIG=0;;
  24                 -c) export SAVE_OVERLAY=1;;
  25                 -b|--create-backup) export CONF_BACKUP="$2"; shift;;
  26                 -f) export CONF_IMAGE="$2"; shift;;
  27                 -h|--help) export HELP=1; break;;
  28                 -*)
  29                         echo "Invalid option: $1"
  30                         exit 1
  31                 ;;
  32                 *) break;;
  33         esac
  34         shift;
  35 done
  36
  37 export CONFFILES=/tmp/sysupgrade.conffiles
  38 export CONF_TAR=/tmp/sysupgrade.tgz
  39
  40 export ARGV="$*"
  41 export ARGC="$#"
  42
  43 [ -z "$ARGV" -a -z "$CONF_BACKUP" -o $HELP -gt 0 ] && {
  44         cat <<EOF
  45 Usage: $0 [options] <image file or URL>
  46
  47 Options:
  48         -d <delay>   add a delay before rebooting
  49         -f <config>  restore configuration from .tar.gz (file or url)
  50         -i           interactive mode
  51         -c           attempt to preserve all changed files in /etc/
  52         -b / --create-backup <file>
  53                      create .tar.gz of files specified in sysupgrade.conf
  54                      then exit. Does not flash an image. If file is '-',
  55                      i.e. stdout, verbosity is set to 0 (i.e. quiet).
  56         -n           do not save configuration over reflash
  57         -q           less verbose
  58         -v           more verbose
  59         -h / --help  display this help
  60
  61 EOF
  62         exit 1
  63 }
  64
  65 [ -n "$ARGV" -a -n "$CONF_BACKUP" ] && {
  66         cat <<-EOF
  67                 -b/--create-backup does not perform a firmware upgrade. Do not
  68                 specify both -b and a firmware image.
  69         EOF
  70         exit 1
  71 }
  72
  73 # prevent messages from clobbering the tarball when using stdout
  74 [ "$CONF_BACKUP" = "-" ] && export VERBOSE=0
  75
  76 add_uci_conffiles() {
  77         local file="$1"
  78         ( find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
  79                 /etc/sysupgrade.conf /lib/upgrade/keep.d/* 2>/dev/null) \
  80                 -type f 2>/dev/null;
  81           opkg list-changed-conffiles ) | sort -u > "$file"
  82         return 0
  83 }
  84
  85 add_overlayfiles() {
  86         local file="$1"
  87         find /overlay/etc/ -type f | sed \
  88                 -e 's,^/overlay/,/,' \
  89                 -e '\,/META_[a-zA-Z0-9]*$,d' \
  90                 -e '\,/functions.sh$,d' \
  91                 -e '\,/[^/]*-opkg$,d' \
  92         > "$file"
  93         return 0
  94 }
  95
  96 # hooks
  97 sysupgrade_image_check="platform_check_image"
  98 [ $SAVE_OVERLAY = 0 -o ! -d /overlay/etc ] && \
  99         sysupgrade_init_conffiles="add_uci_conffiles" || \
 100         sysupgrade_init_conffiles="add_overlayfiles"
 101
 102 include /lib/upgrade
 103
 104 do_save_conffiles() {
 105         local conf_tar="${1:-$CONF_TAR}"
 106
 107         [ -z "$(rootfs_type)" ] && {
 108                 echo "Cannot save config while running from ramdisk."
 109                 ask_bool 0 "Abort" && exit
 110                 return 0
 111         }
 112         run_hooks "$CONFFILES" $sysupgrade_init_conffiles
 113         ask_bool 0 "Edit config file list" && vi "$CONFFILES"
 114
 115         v "Saving config files..."
 116         [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
 117         tar c${TAR_V}zf "$conf_tar" -T "$CONFFILES" 2>/dev/null
 118 }
 119
 120 if [ -n "$CONF_BACKUP" ]; then
 121         do_save_conffiles "$CONF_BACKUP"
 122         exit $?
 123 fi
 124
 125 type platform_check_image >/dev/null 2>/dev/null || {
 126         echo "Firmware upgrade is not implemented for this platform."
 127         exit 1
 128 }
 129
 130 for check in $sysupgrade_image_check; do
 131         ( eval "$check \"\$ARGV\"" ) || {
 132                 echo "Image check '$check' failed."
 133                 exit 1
 134         }
 135 done
 136
 137 if [ -n "$CONF_IMAGE" ]; then
 138         case "$(get_magic_word $CONF_IMAGE cat)" in
 139                 # .gz files
 140                 1f8b) ;;
 141                 *)
 142                         echo "Invalid config file. Please use only .tar.gz files"
 143                         exit 1
 144                 ;;
 145         esac
 146         get_image "$CONF_IMAGE" "cat" > "$CONF_TAR"
 147         export SAVE_CONFIG=1
 148 elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
 149         do_save_conffiles
 150         export SAVE_CONFIG=1
 151 else
 152         export SAVE_CONFIG=0
 153 fi
 154
 155 run_hooks "" $sysupgrade_pre_upgrade
 156
 157 kill_remaining TERM
 158 sleep 3
 159 kill_remaining KILL
 160
 161 if [ -n "$(rootfs_type)" ]; then
 162         v "Switching to ramdisk..."
 163         run_ramfs '. /etc/functions.sh; include /lib/upgrade; do_upgrade'
 164 else
 165         do_upgrade
 166 fi