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909cc6ef5f
This hack was to bring all existing installations to the newest GRUB version as fast as possible. Since 19.07.x is EoL we can assume this task is completed. Now sysupgrade will solely be responsible for bootloader upgrade. Signed-off-by: Tomasz Maciej Nowak <tmn505@gmail.com>
131 lines
3.3 KiB
Bash
131 lines
3.3 KiB
Bash
RAMFS_COPY_BIN='grub-bios-setup'
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platform_check_image() {
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local diskdev partdev diff
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[ "$#" -gt 1 ] && return 1
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case "$(get_magic_word "$1")" in
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eb48|eb63) ;;
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*)
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v "Invalid image type"
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return 1
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;;
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esac
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export_bootdevice && export_partdevice diskdev 0 || {
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v "Unable to determine upgrade device"
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return 1
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}
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get_partitions "/dev/$diskdev" bootdisk
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v "Extract boot sector from the image"
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get_image_dd "$1" of=/tmp/image.bs count=63 bs=512b
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get_partitions /tmp/image.bs image
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#compare tables
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diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
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rm -f /tmp/image.bs /tmp/partmap.bootdisk /tmp/partmap.image
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if [ -n "$diff" ]; then
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v "Partition layout has changed. Full image will be written."
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ask_bool 0 "Abort" && exit 1
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return 0
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fi
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}
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platform_copy_config() {
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local partdev parttype=ext4
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if export_partdevice partdev 1; then
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part_magic_fat "/dev/$partdev" && parttype=vfat
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mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt
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cp -af "$UPGRADE_BACKUP" "/mnt/$BACKUP_FILE"
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umount /mnt
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fi
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}
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platform_do_bootloader_upgrade() {
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local bootpart parttable=msdos
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local diskdev="$1"
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if export_partdevice bootpart 1; then
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mkdir -p /tmp/boot
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mount -o rw,noatime "/dev/$bootpart" /tmp/boot
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echo "(hd0) /dev/$diskdev" > /tmp/device.map
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part_magic_efi "/dev/$diskdev" && parttable=gpt
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v "Upgrading bootloader on /dev/$diskdev..."
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grub-bios-setup \
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-m "/tmp/device.map" \
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-d "/tmp/boot/boot/grub" \
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-r "hd0,${parttable}1" \
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"/dev/$diskdev"
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umount /tmp/boot
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fi
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}
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platform_do_upgrade() {
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local diskdev partdev diff
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export_bootdevice && export_partdevice diskdev 0 || {
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v "Unable to determine upgrade device"
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return 1
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}
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sync
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if [ "$UPGRADE_OPT_SAVE_PARTITIONS" = "1" ]; then
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get_partitions "/dev/$diskdev" bootdisk
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v "Extract boot sector from the image"
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get_image_dd "$1" of=/tmp/image.bs count=63 bs=512b
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get_partitions /tmp/image.bs image
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#compare tables
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diff="$(grep -F -x -v -f /tmp/partmap.bootdisk /tmp/partmap.image)"
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else
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diff=1
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fi
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if [ -n "$diff" ]; then
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get_image_dd "$1" of="/dev/$diskdev" bs=4096 conv=fsync
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# Separate removal and addtion is necessary; otherwise, partition 1
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# will be missing if it overlaps with the old partition 2
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partx -d - "/dev/$diskdev"
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partx -a - "/dev/$diskdev"
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return 0
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fi
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#iterate over each partition from the image and write it to the boot disk
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while read part start size; do
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if export_partdevice partdev $part; then
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v "Writing image to /dev/$partdev..."
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get_image_dd "$1" of="/dev/$partdev" ibs=512 obs=1M skip="$start" count="$size" conv=fsync
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else
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v "Unable to find partition $part device, skipped."
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fi
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done < /tmp/partmap.image
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v "Writing new UUID to /dev/$diskdev..."
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get_image_dd "$1" of="/dev/$diskdev" bs=1 skip=440 count=4 seek=440 conv=fsync
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platform_do_bootloader_upgrade "$diskdev"
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local parttype=ext4
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part_magic_efi "/dev/$diskdev" || return 0
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if export_partdevice partdev 1; then
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part_magic_fat "/dev/$partdev" && parttype=vfat
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mount -t $parttype -o rw,noatime "/dev/$partdev" /mnt
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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"')
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sed -i "s/\(PARTUUID=\)[a-f0-9-]\+/\1$4$3$2$1-$6$5-$8$7-$9/ig" /mnt/boot/grub/grub.cfg
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umount /mnt
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fi
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}
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