#!/usr/bin/bash
COMMAND="$1"
KERNEL_VERSION="$2"
BOOT_DIR_ABS="$3"
KERNEL_IMAGE="$4"
# If KERNEL_INSTALL_MACHINE_ID is defined but empty, BOOT_DIR_ABS is a fake directory.
# So, let's skip to create initrd.
if ! [[ ${KERNEL_INSTALL_MACHINE_ID-x} ]]; then
exit 0
fi
if [[ -d "$BOOT_DIR_ABS" ]]; then
INITRD="initrd"
else
BOOT_DIR_ABS="/boot"
INITRD="initramfs-${KERNEL_VERSION}.img"
fi
ret=0
case "$COMMAND" in
add)
INITRD_IMAGE_PREGENERATED=${KERNEL_IMAGE%/*}/initrd
if [[ -f ${INITRD_IMAGE_PREGENERATED} ]]; then
# we found an initrd at the same place as the kernel
# use this and don't generate a new one
cp --reflink=auto "$INITRD_IMAGE_PREGENERATED" "$BOOT_DIR_ABS/$INITRD" \
&& chown root:root "$BOOT_DIR_ABS/$INITRD" \
&& chmod 0600 "$BOOT_DIR_ABS/$INITRD" \
&& exit 0
fi
if [[ -f /etc/kernel/cmdline ]]; then
read -r -d '' -a BOOT_OPTIONS < /etc/kernel/cmdline
elif [[ -f /usr/lib/kernel/cmdline ]]; then
read -r -d '' -a BOOT_OPTIONS < /usr/lib/kernel/cmdline
else
declare -a BOOT_OPTIONS
read -r -d '' -a line < /proc/cmdline
for i in "${line[@]}"; do
[[ "${i#initrd=*}" != "$i" ]] && continue
BOOT_OPTIONS+=("$i")
done
fi
unset noimageifnotneeded
for ((i=0; i < "${#BOOT_OPTIONS[@]}"; i++)); do
# shellcheck disable=SC1001
if [[ ${BOOT_OPTIONS[$i]} == root\=PARTUUID\=* ]]; then
noimageifnotneeded="yes"
break
fi
done
dracut -f ${noimageifnotneeded:+--noimageifnotneeded} "$BOOT_DIR_ABS/$INITRD" "$KERNEL_VERSION"
ret=$?
;;
remove)
if [[ "$KERNEL_INSTALL_BOOT_ENTRY_TYPE" == "type2" ]]; then
[[ "${KERNEL_INSTALL_VERBOSE:-0}" -gt 0 ]] && \
echo "Not removing UKI image (type2); handled by systemd's 90-uki-copy.install"
exit 0
fi
rm -f -- "$BOOT_DIR_ABS/$INITRD"
ret=$?
;;
esac
exit $ret
