diff options
Diffstat (limited to 'target/linux')
| -rw-r--r-- | target/linux/x86/base-files/lib/upgrade/platform.sh | 69 |
1 files changed, 36 insertions, 33 deletions
diff --git a/target/linux/x86/base-files/lib/upgrade/platform.sh b/target/linux/x86/base-files/lib/upgrade/platform.sh index 81b349a818..4fa71999be 100644 --- a/target/linux/x86/base-files/lib/upgrade/platform.sh +++ b/target/linux/x86/base-files/lib/upgrade/platform.sh @@ -47,40 +47,43 @@ platform_copy_config() { platform_do_upgrade() { local diskdev partdev diff - if export_bootdevice && export_partdevice diskdev 0; then - sync - if [ "$SAVE_PARTITIONS" = "1" ]; then - get_partitions "/dev/$diskdev" bootdisk - - #extract the boot sector from the image - get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b - - get_partitions /tmp/image.bs image - - #compare tables - diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)" - if [ -n "$diff" ]; then - get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync - return 0 - fi - - #iterate over each partition from the image and write it to the boot disk - while read part start size; do - 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 + export_bootdevice && export_partdevice diskdev 0 || { + echo "Unable to determine upgrade device" + return 1 + } + + sync + + if [ "$SAVE_PARTITIONS" = "1" ]; then + get_partitions "/dev/$diskdev" bootdisk + + #extract the boot sector from the image + get_image "$@" | dd of=/tmp/image.bs count=1 bs=512b + + get_partitions /tmp/image.bs image + + #compare tables + diff="$(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 + return 0 + fi + + #iterate over each partition from the image and write it to the boot disk + while read part start size; do + 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 - get_image "$@" | dd of="/dev/$diskdev" bs=4096 conv=fsync + echo "Unable to find partition $part device, skipped." fi + done < /tmp/partmap.image - sleep 1 - fi + #copy partition uuid + echo "Writing new UUID to /dev/$diskdev..." + get_image "$@" | dd of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync } |