base-files: provide a sysupgrade -r (--restore-backup) option as convenience wrapper...

[openwrt/staging/chunkeey.git] / package / base-files / files / sbin / sysupgrade

diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
index 62a4012a328010823e6578fe91d822eed2d22bcf..802848ade7259df17f6e17f2e21a2e144a595d19 100755 (executable)
--- a/package/base-files/files/sbin/sysupgrade
+++ b/package/base-files/files/sbin/sysupgrade
@@ -11,6 +11,7 @@ export SAVE_OVERLAY=0
 export DELAY=
 export CONF_IMAGE=
 export CONF_BACKUP=
+export CONF_RESTORE=
 export HELP=0
 export FORCE=0
 
@@ -24,6 +25,7 @@ while [ -n "$1" ]; do
                -n) export SAVE_CONFIG=0;;
                -c) export SAVE_OVERLAY=1;;
                -b|--create-backup) export CONF_BACKUP="$2"; shift;;
+               -r|--restore-backup) export CONF_RESTORE="$2"; shift;;
                -f) export CONF_IMAGE="$2"; shift;;
                -F|--force) export FORCE=1;;
                -h|--help) export HELP=1; break;;
@@ -55,6 +57,10 @@ Options:
                     create .tar.gz of files specified in sysupgrade.conf
                     then exit. Does not flash an image. If file is '-',
                     i.e. stdout, verbosity is set to 0 (i.e. quiet).
+       -r / --restore-backup <file>
+                    restore a .tar.gz created with sysupgrade -b
+                    then exit. Does not flash an image. If file is '-',
+                    the archive is read from stdin.
        -n           do not save configuration over reflash
        -F / --force
                     Flash image even if image checks fail, this is dangerous!
@@ -126,6 +132,12 @@ if [ -n "$CONF_BACKUP" ]; then
        exit $?
 fi
 
+if [ -f "$CONF_RESTORE" ] || [ "$CONF_RESTORE" = "-" ]; then
+       [ "$VERBOSE" -gt 1 ] && TAR_V="v" || TAR_V=""
+       tar -C / -x${TAR_V}zf "$CONF_RESTORE"
+       exit $?
+fi
+
 type platform_check_image >/dev/null 2>/dev/null || {
        echo "Firmware upgrade is not implemented for this platform."
        exit 1