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sunxi: sysupgrade: sync with x86

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sunxi sysupgrade was based on the x86 implementation; sync fixes and other
changes from the current x86 version:

x86: fix sysupgrades on disks with 4k block size
x86: sysupgrade: move partition table change check to platform_check_image
x86: sysupgrade: refactor platform_do_upgrade
x86: sysupgrade: explicitly rescan disk after writing partition table

Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
This commit is contained in:
Matthias Schiffer 2017-05-04 07:39:20 +02:00
parent 6bb7b87315
commit ce06d2bd01
No known key found for this signature in database
GPG Key ID: 16EF3F64CB201D9C
2 changed files with 68 additions and 46 deletions
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2
target/linux/sunxi/Makefile
View File

@ -28,6 +28,6 @@ KERNELNAME:=zImage dtbs
include $(INCLUDE_DIR)/target.mk
DEFAULT_PACKAGES += uboot-envtools
DEFAULT_PACKAGES += mkf2fs e2fsprogs
DEFAULT_PACKAGES += partx-utils mkf2fs e2fsprogs
$(eval $(call BuildTarget))

112
target/linux/sunxi/base-files/lib/upgrade/platform.sh
View File

@ -1,5 +1,28 @@
platform_check_image() {
true
local diskdev partdev diff
export_bootdevice && export_partdevice diskdev -2 || {
echo "Unable to determine upgrade device"
return 1
}
get_partitions "/dev/$diskdev" bootdisk
#extract the boot sector from the image
get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b 2>/dev/null
get_partitions /tmp/image.bs image
#compare tables
diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
rm -f /tmp/image.bs /tmp/partmap.bootdisk /tmp/partmap.image
if [ -n "$diff" ]; then
echo "Partition layout has changed. Full image will be written."
ask_bool 0 "Abort" && exit 1
return 0
fi
}
platform_copy_config() {
@ -13,55 +36,54 @@ platform_copy_config() {
}
platform_do_upgrade() {
local diskdev partdev ibs diff
local diskdev partdev diff
if export_bootdevice && export_partdevice diskdev -2; then
sync
if [ "$SAVE_PARTITIONS" = "1" ]; then
get_partitions "/dev/$diskdev" bootdisk
export_bootdevice && export_partdevice diskdev -2 || {
echo "Unable to determine upgrade device"
return 1
}
#get block size
if [ -f "/sys/block/$diskdev/queue/physical_block_size" ]; then
ibs="$(cat "/sys/block/$diskdev/queue/physical_block_size")"
else
ibs=512
fi
sync
#extract the boot sector from the image
get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
if [ "$SAVE_PARTITIONS" = "1" ]; then
get_partitions "/dev/$diskdev" bootdisk
get_partitions /tmp/image.bs image
#extract the boot sector from the image
get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
#compare tables
diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
if [ -n "$diff" ]; then
echo "Partition layout is changed. Full image will be written."
ask_bool 0 "Abort" && exit
get_partitions /tmp/image.bs image
get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync
return 0
fi
#write uboot image
get_image "$@" | dd of="$diskdev" bs=1024 skip=8 seek=8 count=1016 conv=fsync
#iterate over each partition from the image and write it to the boot disk
while read part start size; do
part="$(($part - 2))"
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
echo "Unable to find partition $part device, skipped."
fi
done < /tmp/partmap.image
#copy partition uuid
echo "Writing new UUID to /dev/$diskdev..."
get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
else
get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync
fi
sleep 1
#compare tables
diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
else
diff=1
fi
if [ -n "$diff" ]; then
get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync
# Separate removal and addtion is necessary; otherwise, partition 1
# will be missing if it overlaps with the old partition 2
partx -d - "/dev/$diskdev"
partx -a - "/dev/$diskdev"
return 0
fi
#write uboot image
get_image "$@" | dd of="$diskdev" bs=1024 skip=8 seek=8 count=1016 conv=fsync
#iterate over each partition from the image and write it to the boot disk
while read part start size; do
part="$(($part - 2))"
if export_partdevice partdev $part; then
echo "Writing image to /dev/$partdev..."
get_image "$@" | dd of="/dev/$partdev" ibs="512" obs=1M skip="$start" count="$size" conv=fsync
else
echo "Unable to find partition $part device, skipped."
fi
done < /tmp/partmap.image
#copy partition uuid
echo "Writing new UUID to /dev/$diskdev..."
get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
}