add option in sysupgrade to restore config from file or URL (patch from #4043)

SVN-Revision: 12772

diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
index 2230e5b0ca6f85eedb8f2330bcb5828cf1605643..1825cec58e122e9764e650ff4f6a8648a2f92592 100755 (executable)
--- a/package/base-files/files/sbin/sysupgrade
+++ b/package/base-files/files/sbin/sysupgrade
@@ -8,6 +8,7 @@ export INTERACTIVE=0
 export VERBOSE=1
 export SAVE_CONFIG=1
 export DELAY=
+export CONF_IMAGE=
 
 # parse options
 while [ -n "$1" ]; do 
@@ -17,6 +18,7 @@ while [ -n "$1" ]; do
                -v) export VERBOSE="$(($VERBOSE + 1))";;
                -q) export VERBOSE="$(($VERBOSE - 1))";;
                -n) export SAVE_CONFIG=0;;
+               -f) export CONF_IMAGE="$2"; shift;;
                -*)
                        echo "Invalid option: $1"
                        exit 1
@@ -38,6 +40,7 @@ Usage: $0 [options] <image file or URL>
 
 Options:
        -d <delay>   add a delay before rebooting
+       -f <config>  restore configuration from .tar.gz (file or url)
        -i           interactive mode
        -n           do not save configuration over reflash
        -q           less verbose
@@ -85,7 +88,18 @@ for check in $sysupgrade_image_check; do
        }
 done
 
-if ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
+if [ -n "$CONF_IMAGE" ]; then
+       case "$(get_magic_word "$CONF_IMAGE")" in
+               # .gz files
+               1f8b) ;;
+               *)
+                       echo "Invalid config file. Please use only .tar.gz files"
+                       exit 1
+               ;;
+       esac
+       get_image "$CONF_IMAGE" > "$CONF_TAR"
+       export SAVE_CONFIG=1
+elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
        do_save_conffiles
        export SAVE_CONFIG=1
 else