mirror of
https://github.com/coolsnowwolf/lede.git
synced 2025-04-16 04:13:31 +00:00
130 lines
3.5 KiB
Bash
130 lines
3.5 KiB
Bash
platform_check_image() {
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local board=$(board_name)
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local diskdev partdev diff
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[ "$#" -gt 1 ] && return 1
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v "Board is ${board}"
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export_bootdevice && export_partdevice diskdev 0 || {
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v "platform_check_image: Unable to determine upgrade device"
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return 1
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}
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get_partitions "/dev/$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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else
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v "ERROR: Unable to find partition to copy config data to"
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fi
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sleep 5
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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/$diskdev..."
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umount /tmp/boot
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fi
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}
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platform_do_upgrade() {
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local board=$(board_name)
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local diskdev partdev diff
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export_bootdevice && export_partdevice diskdev 0 || {
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v "platform_do_upgrade: 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 "$diff" ]; then
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# Need to remove partitions before dd, otherwise the partitions
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# that are added after will have minor numbers offset
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partx -d - "/dev/$diskdev"
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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 -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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# Provide time for the storage medium to flush before system reset
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# (despite the sync/umount it appears NVMe etc. do it in the background)
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sleep 5
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}
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