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