1 platform_check_image
() {
2 [ "$#" -gt 1 ] && return 1
4 case "$(get_magic_word "$1")" in
7 echo "Invalid image type"
13 platform_copy_config
() {
16 if export_partdevice partdev
1; then
17 mount
-t ext4
-o rw
,noatime
"/dev/$partdev" /mnt
18 cp -af "$CONF_TAR" /mnt
/
23 platform_do_upgrade
() {
24 local diskdev partdev ibs
diff
26 if export_bootdevice
&& export_partdevice diskdev
0; then
28 if [ "$SAVE_PARTITIONS" = "1" ]; then
29 get_partitions
"/dev/$diskdev" bootdisk
32 if [ -f "/sys/block/$diskdev/queue/physical_block_size" ]; then
33 ibs
="$(cat "/sys
/block
/$diskdev/queue
/physical_block_size
")"
38 #extract the boot sector from the image
39 get_image
"$@" |
dd of
=/tmp
/image.bs count
=1 bs
=512b
41 get_partitions
/tmp
/image.bs image
44 diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
45 if [ -n "$diff" ]; then
46 echo "Partition layout is changed. Full image will be written."
47 ask_bool
0 "Abort" && exit
49 get_image
"$@" |
dd of
="/dev/$diskdev" bs
=4096 conv
=fsync
53 #iterate over each partition from the image and write it to the boot disk
54 while read part start size
; do
55 if export_partdevice partdev
$part; then
56 echo "Writing image to /dev/$partdev..."
57 get_image
"$@" |
dd of
="/dev/$partdev" ibs
="$ibs" obs
=1M skip
="$start" count
="$size" conv
=fsync
59 echo "Unable to find partition $part device, skipped."
61 done < /tmp
/partmap.image
64 echo "Writing new UUID to /dev/$diskdev..."
65 get_image
"$@" |
dd of
="/dev/$diskdev" bs
=1 skip
=440 count
=4 seek
=440 conv
=fsync
67 get_image
"$@" |
dd of
="/dev/$diskdev" bs
=4096 conv
=fsync