aurora/build_scripts/base/19-initramfs.sh

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#!/usr/bin/bash
echo "::group:: ===$(basename "$0")==="
set -ouex pipefail
KERNEL_VERSION=$(rpm -q --queryformat="%{evr}.%{arch}" kernel-core)
INITRAMFS="/usr/lib/modules/${KERNEL_VERSION}/initramfs.img"
V4L2_PATH="$(rpm -ql kmod-v4l2loopback)"
DRACUT_REMOVE=(
# makes no difference if in initramfs or not
# this is a hack FIXME in ublue-os/akmods
${V4L2_PATH} # ko.kz file has build id's changing -> non-reproducible
)
# https://github.com/ublue-os/aurora/issues/2568
# these strings change with every build
TMP_OS_RELEASE=$(mktemp --tmpdir 'os-release-XXXXXXXXXX')
OS_RELEASE="/usr/lib/os-release"
cp "${OS_RELEASE}" "${TMP_OS_RELEASE}"
sed -Ei -e '/^((OSTREE_)?(IMAGE_)?VERSION|PRETTY_NAME|BUILD_ID)=/d' "${OS_RELEASE}"
DRACUT_NO_XATTR=1 /usr/bin/dracut \
--kver "${KERNEL_VERSION}" \
--reproducible \
--verbose \
--force \
--remove "${DRACUT_REMOVE[@]}" \
"${INITRAMFS}"
# mv causes permissions to change
cp "${TMP_OS_RELEASE}" "${OS_RELEASE}"
rm "${TMP_OS_RELEASE}"
chmod 0600 "${INITRAMFS}"
# for debugging
sha256sum "${INITRAMFS}"
echo "::endgroup::"