87 lines
1.9 KiB
Bash
Executable File
87 lines
1.9 KiB
Bash
Executable File
#!/bin/bash
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set -eux
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# inject-subiquity-snap.sh $old_iso $subiquity_snap $new_iso
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OLD_ISO=$(readlink -f $1)
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SUBIQUITY_SNAP_PATH=$(readlink -f $2)
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SUBIQUITY_SNAP=$(basename $SUBIQUITY_SNAP_PATH)
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NEW_ISO=$(readlink -f $3)
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tmpdir=$(mktemp -d)
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cd $tmpdir
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MOUNTS=()
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add_mount() {
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MOUNTS=($1 ${MOUNTS[@]+"${MOUNTS[@]}"})
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}
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cleanup () {
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for m in ${MOUNTS[@]+"${MOUNTS[@]}"}; do
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umount $m
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done
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rm -rf $tmpdir
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}
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trap cleanup EXIT
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add_overlay() {
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lower=$1
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mountpoint=$2
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work=$(mktemp -dp $tmpdir)
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upper=$(mktemp -dp $tmpdir)
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mount -t overlay overlay -o lowerdir=$lower,upperdir=$upper,workdir=$work $mountpoint
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add_mount $mountpoint
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}
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mkdir old_iso
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mount -t iso9660 -o loop $OLD_ISO old_iso
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add_mount old_iso
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mkdir old_installer
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mount -t squashfs old_iso/casper/installer.squashfs old_installer
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add_mount old_installer
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mkdir new_installer
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add_overlay old_installer new_installer
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CORE_SNAP=$(cd old_installer/var/lib/snapd/seed/snaps/; ls -1 core*.snap)
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cat <<EOF > new_installer/var/lib/snapd/seed/seed.yaml
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snaps:
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- name: core
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channel: stable
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file: ${CORE_SNAP}
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- name: subiquity
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unasserted: true
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classic: true
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file: ${SUBIQUITY_SNAP}
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EOF
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rm -f new_installer/var/lib/snapd/seed/assertions/subiquity*.assert
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rm -f new_installer/var/lib/snapd/seed/snaps/subiquity*.snap
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cp $SUBIQUITY_SNAP_PATH new_installer/var/lib/snapd/seed/snaps/
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mkdir new_iso
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add_overlay old_iso new_iso
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rm new_iso/casper/installer.squashfs
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mksquashfs new_installer new_iso/casper/installer.squashfs
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xorriso -as mkisofs -r -checksum_algorithm_iso md5,sha1 \
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-V Ubuntu\ custom\ amd64 \
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-o $NEW_ISO \
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-cache-inodes -J -l \
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-b isolinux/isolinux.bin -c isolinux/boot.cat -no-emul-boot \
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-boot-load-size 4 -boot-info-table \
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-eltorito-alt-boot -e boot/grub/efi.img -no-emul-boot \
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-isohybrid-gpt-basdat -isohybrid-apm-hfsplus \
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-isohybrid-mbr /usr/lib/ISOLINUX/isohdpfx.bin \
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new_iso/boot new_iso
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