base-files: export x86 platform upgrade functions to common.sh

Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>

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

@@ -206,6 +206,96 @@ get_magic_long() {
 	(get_image "$@" | dd bs=4 count=1 | hexdump -v -n 4 -e '1/1 "%02x"') 2>/dev/null
 }
 
+export_bootdevice() {
+	local cmdline uuid disk uevent
+	local MAJOR MINOR DEVNAME DEVTYPE
+
+	if read cmdline < /proc/cmdline; then
+		case "$cmdline" in
+			*block2mtd=*)
+				disk="${cmdline##*block2mtd=}"
+				disk="${disk%%,*}"
+			;;
+			*root=*)
+				disk="${cmdline##*root=}"
+				disk="${disk%% *}"
+			;;
+		esac
+
+		case "$disk" in
+			PARTUUID=[a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]-02)
+				uuid="${disk#PARTUUID=}"
+				uuid="${uuid%-02}"
+				for disk in $(find /dev -type b); do
+					set -- $(dd if=$disk bs=1 skip=440 count=4 2>/dev/null | hexdump -v -e '4/1 "%02x "')
+					if [ "$4$3$2$1" = "$uuid" ]; then
+						uevent="/sys/class/block/${disk##*/}/uevent"
+						break
+					fi
+				done
+			;;
+			/dev/*)
+				uevent="/sys/class/block/${disk##*/}/uevent"
+			;;
+		esac
+
+		if [ -e "$uevent" ]; then
+			. "$uevent"
+
+			export BOOTDEV_MAJOR=$MAJOR
+			export BOOTDEV_MINOR=$MINOR
+			return 0
+		fi
+	fi
+
+	return 1
+}
+
+export_partdevice() {
+	local var="$1" offset="$2"
+	local uevent MAJOR MINOR DEVNAME DEVTYPE
+
+	for uevent in /sys/class/block/*/uevent; do
+		. "$uevent"
+		if [ $BOOTDEV_MAJOR = $MAJOR -a $(($BOOTDEV_MINOR + $offset)) = $MINOR -a -b "/dev/$DEVNAME" ]; then
+			export "$var=$DEVNAME"
+			return 0
+		fi
+	done
+
+	return 1
+}
+
+get_partitions() { # <device> <filename>
+	local disk="$1"
+	local filename="$2"
+
+	if [ -b "$disk" -o -f "$disk" ]; then
+		v "Reading partition table from $filename..."
+
+		local magic="$(hexdump -v -n 2 -s 0x1FE -e '1/2 "0x%04X"' "$disk")"
+		if [ "$magic" != 0xAA55 ]; then
+			v "Invalid partition table on $disk"
+			exit
+		fi
+
+		rm -f "/tmp/partmap.$filename"
+
+		local part
+		for part in 1 2 3 4; do
+			set -- $(hexdump -v -n 12 -s "$((0x1B2 + $part * 16))" -e '3/4 "0x%08X "' "$disk")
+
+			local type="$(($1 % 256))"
+			local lba="$(($2))"
+			local num="$(($3))"
+
+			[ $type -gt 0 ] || continue
+
+			printf "%2d %5d %7d\n" $part $lba $num >> "/tmp/partmap.$filename"
+		done
+	fi
+}
+
 jffs2_copy_config() {
 	if grep rootfs_data /proc/mtd >/dev/null; then
 		# squashfs+jffs2

target/linux/x86/base-files/lib/preinit/79_move_config

@@ -4,9 +4,9 @@
 move_config() {
 	local partdev
 
-	. /lib/upgrade/platform.sh
+	. /lib/upgrade/common.sh
 
-	if platform_export_bootdevice && platform_export_partdevice partdev 1; then
+	if export_bootdevice && export_partdevice partdev 1; then
 		if mount -t ext4 -o rw,noatime "/dev/$partdev" /mnt; then
 			if [ -f /mnt/sysupgrade.tgz ]; then
 				mv -f /mnt/sysupgrade.tgz /

target/linux/x86/base-files/lib/upgrade/platform.sh

@@ -1,64 +1,3 @@
-platform_export_partdevice() {
-	local var="$1" offset="$2"
-	local uevent MAJOR MINOR DEVNAME DEVTYPE
-
-	for uevent in /sys/class/block/*/uevent; do
-		. "$uevent"
-		if [ $BOOTDEV_MAJOR = $MAJOR -a $(($BOOTDEV_MINOR + $offset)) = $MINOR -a -b "/dev/$DEVNAME" ]; then
-			export "$var=$DEVNAME"
-			return 0
-		fi
-	done
-
-	return 1
-}
-
-platform_export_bootdevice() {
-	local cmdline uuid disk uevent
-	local MAJOR MINOR DEVNAME DEVTYPE
-
-	if read cmdline < /proc/cmdline; then
-		case "$cmdline" in
-			*block2mtd=*)
-				disk="${cmdline##*block2mtd=}"
-				disk="${disk%%,*}"
-			;;
-			*root=*)
-				disk="${cmdline##*root=}"
-				disk="${disk%% *}"
-			;;
-		esac
-
-		case "$disk" in
-			PARTUUID=[a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9][a-f0-9]-02)
-				uuid="${disk#PARTUUID=}"
-				uuid="${uuid%-02}"
-				for disk in $(find /dev -type b); do
-					set -- $(dd if=$disk bs=1 skip=440 count=4 2>/dev/null | hexdump -v -e '4/1 "%02x "')
-					if [ "$4$3$2$1" = "$uuid" ]; then
-						uevent="/sys/class/block/${disk##*/}/uevent"
-						break
-					fi
-				done
-			;;
-			/dev/*)
-				uevent="/sys/class/block/${disk##*/}/uevent"
-			;;
-		esac
-
-		if [ -e "$uevent" ]; then
-			. "$uevent"
-
-			export BOOTDEV_MAJOR=$MAJOR
-			export BOOTDEV_MINOR=$MINOR
-
-			return 0
-		fi
-	fi
-
-	return 1
-}
-
 platform_check_image() {
 	[ "$#" -gt 1 ] && return 1
 
@@ -74,47 +13,17 @@ platform_check_image() {
 platform_copy_config() {
 	local partdev
 
-	if platform_export_partdevice partdev 1; then
+	if export_partdevice partdev 1; then
 		mount -t ext4 -o rw,noatime "/dev/$partdev" /mnt
 		cp -af "$CONF_TAR" /mnt/
 		umount /mnt
 	fi
 }
 
-get_partitions() { # <device> <filename>
-	local disk="$1"
-	local filename="$2"
-
-	if [ -b "$disk" -o -f "$disk" ]; then
-		echo "Reading partition table from $filename..."
-
-		local magic="$(hexdump -v -n 2 -s 0x1FE -e '1/2 "0x%04X"' "$disk")"
-		if [ "$magic" != 0xAA55 ]; then
-			echo "Invalid partition table on $disk"
-			exit
-		fi
-
-		rm -f "/tmp/partmap.$filename"
-
-		local part
-		for part in 1 2 3 4; do
-			set -- $(hexdump -v -n 12 -s "$((0x1B2 + $part * 16))" -e '3/4 "0x%08X "' "$disk")
-
-			local type="$(($1 % 256))"
-			local lba="$(($2))"
-			local num="$(($3))"
-
-			[ $type -gt 0 ] || continue
-
-			printf "%2d %5d %7d\n" $part $lba $num >> "/tmp/partmap.$filename"
-		done
-	fi
-}
-
 platform_do_upgrade() {
 	local diskdev partdev ibs diff
 
-	if platform_export_bootdevice && platform_export_partdevice diskdev 0; then
+	if export_bootdevice && export_partdevice diskdev 0; then
 		sync
 		if [ "$SAVE_PARTITIONS" = "1" ]; then
 			get_partitions "/dev/$diskdev" bootdisk
@@ -143,7 +52,7 @@ platform_do_upgrade() {
 
 			#iterate over each partition from the image and write it to the boot disk
 			while read part start size; do
-				if platform_export_partdevice partdev $part; then
+				if export_partdevice partdev $part; then
 					echo "Writing image to /dev/$partdev..."
 					get_image "$@" | dd of="/dev/$partdev" ibs="$ibs" obs=1M skip="$start" count="$size" conv=fsync
 				else