|
|
|
@ -61,7 +61,27 @@ get_partitions() { # <device> <filename> |
|
|
|
|
|
|
|
|
|
if [ -b "$disk" -o -f "$disk" ]; then |
|
|
|
|
echo "Reading partition table from $filename..." |
|
|
|
|
partx -r "$disk" -gbo NR,START,SECTORS > "/tmp/partx.$filename" |
|
|
|
|
|
|
|
|
|
local magic="$(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 |
|
|
|
|
} |
|
|
|
|
|
|
|
|
@ -76,9 +96,11 @@ platform_do_upgrade() { |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#get block size |
|
|
|
|
sectors="$(partx -r $disk -gbo SECTORS --nr 1:1)" |
|
|
|
|
size="$(partx -r $disk -gbo SIZE --nr 1:1)" |
|
|
|
|
ibs="$(($size / $sectors))" |
|
|
|
|
if [ -f "/sys/block/${disk##*/}/queue/physical_block_size" ]; then |
|
|
|
|
ibs="$(cat "/sys/block/${disk##*/}/queue/physical_block_size")" |
|
|
|
|
else |
|
|
|
|
ibs=512 |
|
|
|
|
fi |
|
|
|
|
|
|
|
|
|
#extract the boot sector from the image |
|
|
|
|
get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b |
|
|
|
@ -86,7 +108,7 @@ platform_do_upgrade() { |
|
|
|
|
get_partitions /tmp/image.bs image |
|
|
|
|
|
|
|
|
|
#compare tables |
|
|
|
|
diff="$(grep -F -x -v -f /tmp/partx.bootdisk /tmp/partx.image)" |
|
|
|
|
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 |
|
|
|
@ -99,7 +121,7 @@ platform_do_upgrade() { |
|
|
|
|
while read part start size; do |
|
|
|
|
echo "Writing image to $disk$part..." |
|
|
|
|
get_image "$@" | dd of="$disk$part" ibs="$ibs" obs=1M skip="$start" count="$size" conv=fsync |
|
|
|
|
done < /tmp/partx.image |
|
|
|
|
done < /tmp/partmap.image |
|
|
|
|
|
|
|
|
|
#copy partition uuid |
|
|
|
|
echo "Writing new UUID to $disk$part..." |
|
|
|
|