[bot] AutoMerging: merge all upstream's changes:

* https://github.com/coolsnowwolf/lede:
  base-files: fixes x86 sysupgrade (coolsnowwolf#10992)

package/base-files/files/lib/upgrade/common.sh

@@ -65,16 +65,9 @@ _v() {
 	[ -n "$VERBOSE" ] && [ "$VERBOSE" -ge 1 ] && echo "$*" >&2
 }
 
-_vn() {
-	[ -n "$VERBOSE" ] && [ "$VERBOSE" -ge 1 ] && echo -n "$*" >&2
-}
-
 v() {
 	_v "$(date) upgrade: $@"
-}
-
-vn() {
-	_vn "$(date) upgrade: $@"
+	logger -p info -t upgrade "$@"
 }
 
 json_string() {
@@ -95,8 +88,7 @@ get_image() { # <source> [ <command> ]
 	if [ -z "$cmd" ]; then
 		local magic="$(dd if="$from" bs=2 count=1 2>/dev/null | hexdump -n 2 -e '1/1 "%02x"')"
 		case "$magic" in
-			1f8b) cmd="zcat";;
-			425a) cmd="bzcat";;
+			1f8b) cmd="busybox zcat";;
 			*) cmd="cat";;
 		esac
 	fi
@@ -135,6 +127,33 @@ get_magic_fat32() {
 	(get_image "$@" | dd bs=1 count=5 skip=82) 2>/dev/null
 }
 
+identify_magic_long() {
+	local magic=$1
+	case "$magic" in
+		"55424923")
+			echo "ubi"
+			;;
+		"31181006")
+			echo "ubifs"
+			;;
+		"68737173")
+			echo "squashfs"
+			;;
+		"d00dfeed")
+			echo "fit"
+			;;
+		"4349"*)
+			echo "combined"
+			;;
+		"1f8b"*)
+			echo "gzip"
+			;;
+		*)
+			echo "unknown $magic"
+			;;
+	esac
+}
+
 part_magic_efi() {
 	local magic=$(get_magic_gpt "$@")
 	[ "$magic" = "EFI PART" ]
@@ -163,9 +182,11 @@ export_bootdevice() {
 				fi
 			done
 		;;
+		PARTUUID=????????-????-????-????-??????????0?/PARTNROFF=1 | \
 		PARTUUID=????????-????-????-????-??????????02)
 			uuid="${rootpart#PARTUUID=}"
-			uuid="${uuid%02}00"
+			uuid="${uuid%/PARTNROFF=1}"
+			uuid="${uuid%0?}00"
 			for disk in $(find /dev -type b); do
 				set -- $(dd if=$disk bs=1 skip=568 count=16 2>/dev/null | hexdump -v -e '8/1 "%02x "" "2/1 "%02x""-"6/1 "%02x"')
 				if [ "$4$3$2$1-$6$5-$8$7-$9" = "$uuid" ]; then
@@ -211,7 +232,7 @@ export_partdevice() {
 		while read line; do
 			export -n "$line"
 		done < "$uevent"
-		if [ $BOOTDEV_MAJOR = $MAJOR -a $(($BOOTDEV_MINOR + $offset)) = $MINOR -a -b "/dev/$DEVNAME" ]; then
+		if [ "$BOOTDEV_MAJOR" = "$MAJOR" -a $(($BOOTDEV_MINOR + $offset)) = "$MINOR" -a -b "/dev/$DEVNAME" ]; then
 			export "$var=$DEVNAME"
 			return 0
 		fi
@@ -228,15 +249,6 @@ hex_le32_to_cpu() {
 	echo "$@"
 }
 
-get_partition_by_name() {
-	for partname in /sys/class/block/$1/*/name; do
-		[ "$(cat ${partname})" = "$2" ] && {
-			basename ${partname%%/name}
-			break
-		}
-	done
-}
-
 get_partitions() { # <device> <filename>
 	local disk="$1"
 	local filename="$2"