x86: backport more sysupgrade patches

Should fix sysupgrades on disks with 4k block size.

patches/openwrt/0094-x86-move-sysupgrade.tgz-only-if-it-exists.patch

+From: Yousong Zhou <yszhou4tech@gmail.com>
+Date: Sun, 1 Jan 2017 01:06:29 +0800
+Subject: x86: move sysupgrade.tgz only if it exists
+
+To squash error messages at boot time
+
+    mv: can't rename '/mnt/sysupgrade.tgz': No such file or directory
+
+Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
+
+Backport of LEDE fa37bdc05a3e8ebab7de293d059959b2efc99581
+
+diff --git a/target/linux/x86/base-files/lib/preinit/79_move_config b/target/linux/x86/base-files/lib/preinit/79_move_config
+index 5ac81cb90d1c15782a9c4f271720cfa66d6d03a9..37954f0236faafca657a05a3c1efc7df2e162bfc 100644
+--- a/target/linux/x86/base-files/lib/preinit/79_move_config
++++ b/target/linux/x86/base-files/lib/preinit/79_move_config
+@@ -7,9 +7,12 @@ move_config() {
+ 	. /lib/upgrade/platform.sh
+ 
+ 	if platform_export_bootdevice && platform_export_partdevice partdev 1; then
+-		mount -t ext4 -o rw,noatime "/dev/$partdev" /mnt
+-		mv -f /mnt/sysupgrade.tgz /
+-		umount /mnt
++		if mount -t ext4 -o rw,noatime "/dev/$partdev" /mnt; then
++			if [ -f /mnt/sysupgrade.tgz ]; then
++				mv -f /mnt/sysupgrade.tgz /
++			fi
++			umount /mnt
++		fi
+ 	fi
+ }
+ 

patches/openwrt/0095-base-files-export-x86-platform-upgrade-functions-to-common.sh.patch

+From: Yousong Zhou <yszhou4tech@gmail.com>
+Date: Sun, 1 Jan 2017 01:06:37 +0800
+Subject: base-files: export x86 platform upgrade functions to common.sh
+
+Signed-off-by: Yousong Zhou <yszhou4tech@gmail.com>
+
+Backport of LEDE 6f61d8511eccf2736fd7f430aff2c98c595fa4b9
+
+diff --git a/package/base-files/files/lib/upgrade/common.sh b/package/base-files/files/lib/upgrade/common.sh
+index 14684959dd46d04b1c4b72213dbe06943ae64686..2064adf775c491725dbff5826b94bd6132d8d060 100644
+--- a/package/base-files/files/lib/upgrade/common.sh
++++ b/package/base-files/files/lib/upgrade/common.sh
+@@ -203,6 +203,96 @@ 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
+diff --git a/target/linux/x86/base-files/lib/preinit/79_move_config b/target/linux/x86/base-files/lib/preinit/79_move_config
+index 37954f0236faafca657a05a3c1efc7df2e162bfc..143ca5147b5693a5b8068dc10eb71b5066777160 100644
+--- a/target/linux/x86/base-files/lib/preinit/79_move_config
++++ b/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 /
+diff --git a/target/linux/x86/base-files/lib/upgrade/platform.sh b/target/linux/x86/base-files/lib/upgrade/platform.sh
+index c8bc3f7f608fc82ee3afc049b64af3a740fd2c37..8850917062618985126b5086dccfe11506ed1fbb 100644
+--- a/target/linux/x86/base-files/lib/upgrade/platform.sh
++++ b/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

patches/openwrt/0096-x86-fix-sysupgrades-on-disks-with-4k-block-size.patch

+From: Felix Fietkau <nbd@nbd.name>
+Date: Wed, 25 Jan 2017 08:13:11 +0100
+Subject: x86: fix sysupgrades on disks with 4k block size
+
+Even when the disk uses 4k blocks, the partition table still uses units
+of 512 byte sectors. Always use ibs=512 for the offsets
+
+Signed-off-by: Felix Fietkau <nbd@nbd.name>
+
+Backport of LEDE e9ecb228c9d80605884058d7653e2eb56ba64051
+
+diff --git a/target/linux/x86/base-files/lib/upgrade/platform.sh b/target/linux/x86/base-files/lib/upgrade/platform.sh
+index 8850917062618985126b5086dccfe11506ed1fbb..d3e9f360aadedad0995da55205364940c9884ba4 100644
+--- a/target/linux/x86/base-files/lib/upgrade/platform.sh
++++ b/target/linux/x86/base-files/lib/upgrade/platform.sh
+@@ -21,20 +21,13 @@ platform_copy_config() {
+ }
+ 
+ platform_do_upgrade() {
+-	local diskdev partdev ibs diff
++	local diskdev partdev diff
+ 
+ 	if export_bootdevice && export_partdevice diskdev 0; then
+ 		sync
+ 		if [ "$SAVE_PARTITIONS" = "1" ]; then
+ 			get_partitions "/dev/$diskdev" bootdisk
+ 
+-			#get block size
+-			if [ -f "/sys/block/$diskdev/queue/physical_block_size" ]; then
+-				ibs="$(cat "/sys/block/$diskdev/queue/physical_block_size")"
+-			else
+-				ibs=512
+-			fi
+-
+ 			#extract the boot sector from the image
+ 			get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
+ 
+@@ -54,7 +47,7 @@ platform_do_upgrade() {
+ 			while read part start size; do
+ 				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="$size" conv=fsync
++					get_image "$@" | dd of="/dev/$partdev" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
+ 				else
+ 					echo "Unable to find partition $part device, skipped."
+ 				fi