[package] base-files: add an experimental "-c" flag which tries to preserve *all...

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@22977 3c298f89-4303-0410-b956-a3cf2f4a3e73

diff --git a/package/base-files/Makefile b/package/base-files/Makefile
index 00a9b35..bdaf53c 100644 (file)
--- a/package/base-files/Makefile
+++ b/package/base-files/Makefile
@@ -10,7 +10,7 @@ include $(TOPDIR)/rules.mk
 include $(INCLUDE_DIR)/kernel.mk
 
 PKG_NAME:=base-files
-PKG_RELEASE:=52
+PKG_RELEASE:=54
 
 PKG_FILE_DEPENDS:=$(PLATFORM_DIR)/ $(GENERIC_PLATFORM_DIR)/base-files/
 PKG_BUILD_DEPENDS:=opkg/host

diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
index 0cf51cf..0fb0753 100755 (executable)
--- a/package/base-files/files/sbin/sysupgrade
+++ b/package/base-files/files/sbin/sysupgrade
@@ -7,8 +7,10 @@ RAMFS_COPY_DATA=""     # extra data files
 export INTERACTIVE=0
 export VERBOSE=1
 export SAVE_CONFIG=1
+export SAVE_OVERLAY=0
 export DELAY=
 export CONF_IMAGE=
+
 # parse options
 while [ -n "$1" ]; do 
        case "$1" in
@@ -17,6 +19,7 @@ while [ -n "$1" ]; do
                -v) export VERBOSE="$(($VERBOSE + 1))";;
                -q) export VERBOSE="$(($VERBOSE - 1))";;
                -n) export SAVE_CONFIG=0;;
+               -c) export SAVE_OVERLAY=1;;
                -f) export CONF_IMAGE="$2"; shift;;
                -*)
                        echo "Invalid option: $1"
@@ -41,7 +44,8 @@ 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
+       -c           attempt to preserve all changed files in /etc/
+       -n           do not save configuration over reflash
        -q           less verbose
        -v           more verbose
 
@@ -56,9 +60,22 @@ add_uci_conffiles() {
        return 0
 }
 
+add_overlayfiles() {
+       local file="$1"
+       find /overlay/etc/ -type f | sed \
+               -e 's,^/overlay/,/,' \
+               -e '\,/META_[a-zA-Z0-9]*$,d' \
+               -e '\,/functions.sh$,d' \
+               -e '\,/[^/]*-opkg$,d' \
+       > "$file"
+       return 0
+}
+
 # hooks
 sysupgrade_image_check="platform_check_image"
-sysupgrade_init_conffiles="add_uci_conffiles"
+[ $SAVE_OVERLAY = 0 -o ! -d /overlay/etc ] && \
+       sysupgrade_init_conffiles="add_uci_conffiles" || \
+       sysupgrade_init_conffiles="add_overlayfiles"
 
 include /lib/upgrade