1 platform_check_image
() {
5 platform_copy_config
() {
8 if export_partdevice partdev
-1; then
9 mount
-t vfat
-o rw
,noatime
"/dev/$partdev" /mnt
10 cp -af "$CONF_TAR" /mnt
/
15 platform_do_upgrade
() {
16 local diskdev partdev ibs
diff
18 if export_bootdevice
&& export_partdevice diskdev
-2; then
20 if [ "$SAVE_PARTITIONS" = "1" ]; then
21 get_partitions
"/dev/$diskdev" bootdisk
24 if [ -f "/sys/block/$diskdev/queue/physical_block_size" ]; then
25 ibs
="$(cat "/sys
/block
/$diskdev/queue
/physical_block_size
")"
30 #extract the boot sector from the image
31 get_image
"$@" |
dd of
=/tmp
/image.bs count
=1 bs
=512b
33 get_partitions
/tmp
/image.bs image
36 diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
37 if [ -n "$diff" ]; then
38 echo "Partition layout is changed. Full image will be written."
39 ask_bool
0 "Abort" && exit
41 get_image
"$@" |
dd of
="/dev/$diskdev" bs
=4096 conv
=fsync
46 get_image
"$@" |
dd of
="$diskdev" bs
=1024 skip
=8 seek
=8 count
=1016 conv
=fsync
47 #iterate over each partition from the image and write it to the boot disk
48 while read part start size
; do
50 if export_partdevice partdev
$part; then
51 echo "Writing image to /dev/$partdev..."
52 get_image
"$@" |
dd of
="/dev/$partdev" ibs
="$ibs" obs
=1M skip
="$start" count
="$size" conv
=fsync
54 echo "Unable to find partition $part device, skipped."
56 done < /tmp
/partmap.image
59 echo "Writing new UUID to /dev/$diskdev..."
60 get_image
"$@" |
dd of
="/dev/$diskdev" bs
=1 skip
=440 count
=4 seek
=440 conv
=fsync
62 get_image
"$@" |
dd of
="/dev/$diskdev" bs
=4096 conv
=fsync