#!/bin/bash -xe
set -o pipefail

# Kernel mangling

kver=$(ls -1 "${root:?}"/usr/lib/modules)

# move kernel out of /boot into /usr/lib/modules/
mv "${root:?}"/boot/vmlinuz-"$kver" "${root:?}"/usr/lib/modules/"$kver"/vmlinuz
mv "${root:?}"/boot/initrd.img-"$kver" "${root:?}"/usr/lib/modules/"$kver"/initramfs.img
mv "${root:?}"/boot/config-"$kver" "${root:?}"/usr/lib/modules/"$kver"/config
mv "${root:?}"/boot/System.map-"$kver" "${root:?}"/usr/lib/modules/"$kver"/System.map

# remove kernel symlinks from root
rm "${root:?}"/vmlinuz* "${root:?}"/initrd.*

khash=$(sha256sum "${root:?}"/usr/lib/modules/"$kver"/vmlinuz | awk '{print $1}')

# add ostree style kernel links from /usr/lib/ostree-boot
mkdir -p "${root:?}"/usr/lib/ostree-boot
ln -s /usr/lib/modules/"$kver"/vmlinuz "${root:?}"/usr/lib/ostree-boot/vmlinuz-"$khash"
ln -s /usr/lib/modules/"$kver"/initramfs.img "${root:?}"/usr/lib/ostree-boot/initramfs-"$khash"