X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/71b1c2cbf3edd91a8f1048bb8572237cff3b3d52..02e3b0f5531da86339e8da86b1f78a9b6aba7f50:/package/base-files/files/sbin/sysupgrade?ds=sidebyside

diff --git a/package/base-files/files/sbin/sysupgrade b/package/base-files/files/sbin/sysupgrade
index 1825cec58..7efb2b436 100755
--- 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=
+export HELP=0
 
 # parse options
 while [ -n "$1" ]; do 
@@ -18,7 +20,9 @@ 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;;
+		-h|--help) export HELP=1; break;;
 		-*)
 			echo "Invalid option: $1"
 			exit 1
@@ -34,7 +38,7 @@ export CONF_TAR=/tmp/sysupgrade.tgz
 export ARGV="$*"
 export ARGC="$#"
 
-[ -z "$ARGV" ] && {
+[ -z "$ARGV" -o $HELP -gt 0 ] && {
 	cat <<EOF
 Usage: $0 [options] <image file or URL>
 
@@ -42,9 +46,11 @@ 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
+	-h / --help  display this help
 
 EOF
 	exit 1
@@ -52,13 +58,29 @@ EOF
 
 add_uci_conffiles() {
 	local file="$1"
-	find /etc/config /etc/passwd /etc/group /etc/dropbear /etc/firewall.user > "$file"
+	( find $(sed -ne '/^[[:space:]]*$/d; /^#/d; p' \
+		/etc/sysupgrade.conf /lib/upgrade/keep.d/* 2>/dev/null) \
+		-type f 2>/dev/null;
+	  opkg list-changed-conffiles ) | sort -u > "$file"
+	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
 
@@ -89,7 +111,7 @@ for check in $sysupgrade_image_check; do
 done
 
 if [ -n "$CONF_IMAGE" ]; then
-	case "$(get_magic_word "$CONF_IMAGE")" in
+	case "$(get_magic_word $CONF_IMAGE cat)" in
 		# .gz files
 		1f8b) ;;
 		*)
@@ -97,7 +119,7 @@ if [ -n "$CONF_IMAGE" ]; then
 			exit 1
 		;;
 	esac
-	get_image "$CONF_IMAGE" > "$CONF_TAR"
+	get_image "$CONF_IMAGE" "cat" > "$CONF_TAR"
 	export SAVE_CONFIG=1
 elif ask_bool $SAVE_CONFIG "Keep config files over reflash"; then
 	do_save_conffiles
@@ -107,5 +129,9 @@ else
 fi
 run_hooks "" $sysupgrade_pre_upgrade
 
-v "Switching to ramdisk..."
-run_ramfs '. /etc/functions.sh; include /lib/upgrade; do_upgrade'
+if [ -n "$(rootfs_type)" ]; then
+	v "Switching to ramdisk..."
+	run_ramfs '. /etc/functions.sh; include /lib/upgrade; do_upgrade'
+else
+	do_upgrade
+fi