| RAMFS_COPY_BIN='grub-bios-setup' |
| |
| platform_check_image() { |
| local diskdev partdev diff |
| [ "$#" -gt 1 ] && return 1 |
| |
| case "$(get_magic_word "$1")" in |
| eb48|eb63) ;; |
| *) |
| v "Invalid image type" |
| return 1 |
| ;; |
| esac |
| |
| export_bootdevice && export_partdevice diskdev 0 || { |
| v "Unable to determine upgrade device" |
| return 1 |
| } |
| |
| get_partitions "/dev/$diskdev" bootdisk |
| |
| v "Extract boot sector from the image" |
| get_image_dd "$1" of=/tmp/image.bs count=63 bs=512b |
| |
| get_partitions /tmp/image.bs image |
| |
| #compare tables |
| diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)" |
| |
| rm -f /tmp/image.bs /tmp/partmap.bootdisk /tmp/partmap.image |
| |
| if [ -n "$diff" ]; then |
| v "Partition layout has changed. Full image will be written." |
| ask_bool 0 "Abort" && exit 1 |
| return 0 |
| fi |
| } |
| |
| platform_copy_config() { |
| local partdev parttype=ext4 |
| |
| if export_partdevice partdev 1; then |
| part_magic_fat "/dev/$partdev" && parttype=vfat |
| mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt |
| cp -af "$UPGRADE_BACKUP" "/mnt/$BACKUP_FILE" |
| umount /mnt |
| fi |
| } |
| |
| platform_do_bootloader_upgrade() { |
| local bootpart parttable=msdos |
| local diskdev="$1" |
| |
| if export_partdevice bootpart 1; then |
| mkdir -p /tmp/boot |
| mount -o rw,noatime "/dev/$bootpart" /tmp/boot |
| echo "(hd0) /dev/$diskdev" > /tmp/device.map |
| part_magic_efi "/dev/$diskdev" && parttable=gpt |
| |
| v "Upgrading bootloader on /dev/$diskdev..." |
| grub-bios-setup \ |
| -m "/tmp/device.map" \ |
| -d "/tmp/boot/boot/grub" \ |
| -r "hd0,${parttable}1" \ |
| "/dev/$diskdev" \ |
| && touch /tmp/boot/boot/grub/upgraded |
| |
| umount /tmp/boot |
| fi |
| } |
| |
| platform_do_upgrade() { |
| local diskdev partdev diff |
| |
| export_bootdevice && export_partdevice diskdev 0 || { |
| v "Unable to determine upgrade device" |
| return 1 |
| } |
| |
| sync |
| |
| if [ "$UPGRADE_OPT_SAVE_PARTITIONS" = "1" ]; then |
| get_partitions "/dev/$diskdev" bootdisk |
| |
| v "Extract boot sector from the image" |
| get_image_dd "$1" of=/tmp/image.bs count=63 bs=512b |
| |
| get_partitions /tmp/image.bs image |
| |
| #compare tables |
| diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)" |
| else |
| diff=1 |
| fi |
| |
| if [ -n "$diff" ]; then |
| get_image_dd "$1" of="/dev/$diskdev" bs=4096 conv=fsync |
| |
| # Separate removal and addtion is necessary; otherwise, partition 1 |
| # will be missing if it overlaps with the old partition 2 |
| partx -d - "/dev/$diskdev" |
| partx -a - "/dev/$diskdev" |
| |
| 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 $part; then |
| v "Writing image to /dev/$partdev..." |
| get_image_dd "$1" of="/dev/$partdev" ibs=512 obs=1M skip="$start" count="$size" conv=fsync |
| else |
| v "Unable to find partition $part device, skipped." |
| fi |
| done < /tmp/partmap.image |
| |
| v "Writing new UUID to /dev/$diskdev..." |
| get_image_dd "$1" of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync |
| |
| platform_do_bootloader_upgrade "$diskdev" |
| local parttype=ext4 |
| part_magic_efi "/dev/$diskdev" || return 0 |
| |
| if export_partdevice partdev 1; then |
| part_magic_fat "/dev/$partdev" && parttype=vfat |
| mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt |
| set -- $(dd if="/dev/$diskdev" bs=1 skip=1168 count=16 2>/dev/null | hexdump -v -e '8/1 "%02x "" "2/1 "%02x""-"6/1 "%02x"') |
| sed -i "s/\(PARTUUID=\)[a-f0-9-]\+/\1$4$3$2$1-$6$5-$8$7-$9/ig" /mnt/boot/grub/grub.cfg |
| umount /mnt |
| fi |
| } |