2016-05-24 10:07:02 +00:00
|
|
|
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
|
2015-03-24 10:08:12 +00:00
|
|
|
|
|
|
|
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}"
|
2016-05-24 10:07:02 +00:00
|
|
|
for disk in $(find /dev -type b); do
|
2015-03-24 10:08:12 +00:00
|
|
|
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
|
2016-05-24 10:07:02 +00:00
|
|
|
uevent="/sys/class/block/${disk##*/}/uevent"
|
|
|
|
break
|
2015-03-24 10:08:12 +00:00
|
|
|
fi
|
|
|
|
done
|
|
|
|
;;
|
|
|
|
/dev/*)
|
2016-05-24 10:07:02 +00:00
|
|
|
uevent="/sys/class/block/${disk##*/}/uevent"
|
2015-03-24 10:08:12 +00:00
|
|
|
;;
|
|
|
|
esac
|
2016-05-24 10:07:02 +00:00
|
|
|
|
|
|
|
if [ -e "$uevent" ]; then
|
|
|
|
. "$uevent"
|
|
|
|
|
|
|
|
export BOOTDEV_MAJOR=$MAJOR
|
|
|
|
export BOOTDEV_MINOR=$MINOR
|
|
|
|
|
|
|
|
return 0
|
|
|
|
fi
|
2015-03-24 10:08:12 +00:00
|
|
|
fi
|
|
|
|
|
|
|
|
return 1
|
2012-06-19 22:36:53 +00:00
|
|
|
}
|
|
|
|
|
2007-08-21 18:23:57 +00:00
|
|
|
platform_check_image() {
|
2014-06-02 12:43:22 +00:00
|
|
|
[ "$#" -gt 1 ] && return 1
|
2007-08-21 18:23:57 +00:00
|
|
|
|
|
|
|
case "$(get_magic_word "$1")" in
|
2012-10-23 16:34:00 +00:00
|
|
|
eb48|eb63) return 0;;
|
2007-08-21 18:23:57 +00:00
|
|
|
*)
|
|
|
|
echo "Invalid image type"
|
|
|
|
return 1
|
|
|
|
;;
|
|
|
|
esac
|
|
|
|
}
|
|
|
|
|
2012-06-19 22:36:53 +00:00
|
|
|
platform_copy_config() {
|
2016-05-24 10:07:02 +00:00
|
|
|
local partdev
|
|
|
|
|
|
|
|
if platform_export_partdevice partdev 1; then
|
|
|
|
mount -t ext4 -o rw,noatime "/dev/$partdev" /mnt
|
2015-03-24 10:08:12 +00:00
|
|
|
cp -af "$CONF_TAR" /mnt/
|
|
|
|
umount /mnt
|
|
|
|
fi
|
2012-06-19 22:36:53 +00:00
|
|
|
}
|
|
|
|
|
2016-02-09 12:33:17 +00:00
|
|
|
get_partitions() { # <device> <filename>
|
|
|
|
local disk="$1"
|
|
|
|
local filename="$2"
|
|
|
|
|
|
|
|
if [ -b "$disk" -o -f "$disk" ]; then
|
|
|
|
echo "Reading partition table from $filename..."
|
2016-03-30 01:10:51 +00:00
|
|
|
|
|
|
|
local magic="$(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
|
2016-02-09 12:33:17 +00:00
|
|
|
fi
|
|
|
|
}
|
|
|
|
|
2012-06-19 22:36:53 +00:00
|
|
|
platform_do_upgrade() {
|
2016-05-24 10:07:02 +00:00
|
|
|
local diskdev partdev ibs diff
|
2012-06-19 22:36:53 +00:00
|
|
|
|
2016-05-24 10:07:02 +00:00
|
|
|
if platform_export_bootdevice && platform_export_partdevice diskdev 0; then
|
2015-03-24 10:08:12 +00:00
|
|
|
sync
|
2016-02-09 12:33:17 +00:00
|
|
|
if [ "$SAVE_PARTITIONS" = "1" ]; then
|
2016-05-24 10:07:02 +00:00
|
|
|
get_partitions "/dev/$diskdev" bootdisk
|
2016-02-09 12:33:17 +00:00
|
|
|
|
|
|
|
#get block size
|
2016-05-24 10:07:02 +00:00
|
|
|
if [ -f "/sys/block/$diskdev/queue/physical_block_size" ]; then
|
|
|
|
ibs="$(cat "/sys/block/$diskdev/queue/physical_block_size")"
|
2016-03-30 01:10:51 +00:00
|
|
|
else
|
|
|
|
ibs=512
|
|
|
|
fi
|
2016-02-09 12:33:17 +00:00
|
|
|
|
|
|
|
#extract the boot sector from the image
|
|
|
|
get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b
|
|
|
|
|
|
|
|
get_partitions /tmp/image.bs image
|
|
|
|
|
|
|
|
#compare tables
|
2016-03-30 01:10:51 +00:00
|
|
|
diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
|
2016-02-09 12:33:17 +00:00
|
|
|
if [ -n "$diff" ]; then
|
|
|
|
echo "Partition layout is changed. Full image will be written."
|
|
|
|
ask_bool 0 "Abort" && exit
|
|
|
|
|
2016-05-24 10:07:02 +00:00
|
|
|
get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync
|
2016-02-09 12:33:17 +00:00
|
|
|
return 0
|
|
|
|
fi
|
|
|
|
|
|
|
|
#iterate over each partition from the image and write it to the boot disk
|
|
|
|
while read part start size; do
|
2016-05-24 10:07:02 +00:00
|
|
|
if platform_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 $part device, skipped."
|
|
|
|
fi
|
2016-03-30 01:10:51 +00:00
|
|
|
done < /tmp/partmap.image
|
2016-02-09 12:33:17 +00:00
|
|
|
|
|
|
|
#copy partition uuid
|
2016-05-24 10:07:02 +00:00
|
|
|
echo "Writing new UUID to /dev/$diskdev..."
|
|
|
|
get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
|
2016-02-09 12:33:17 +00:00
|
|
|
else
|
2016-05-24 10:07:02 +00:00
|
|
|
get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync
|
2016-02-09 12:33:17 +00:00
|
|
|
fi
|
|
|
|
|
2015-03-24 10:08:12 +00:00
|
|
|
sleep 1
|
|
|
|
fi
|
2007-08-21 18:23:57 +00:00
|
|
|
}
|