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#!/bin/bash
COMMAND="${1:?}"
KERNEL_VERSION="${2:?}"
#shellcheck disable=SC2034
BOOT_DIR_ABS="$3"
KERNEL_IMAGE="$4"
# If the initrd was provided on the kernel command line, we shouldn't generate our own.
if [[ "$COMMAND" != "add" || "$#" -gt 4 ]]; then
exit 0
fi
# Do not attempt to create initramfs if the supplied image is already a UKI
if [[ "$KERNEL_INSTALL_IMAGE_TYPE" = "uki" ]]; then
exit 0
fi
if [[ "${KERNEL_INSTALL_INITRD_GENERATOR:-dracut}" = "dracut" ]]; then
# We are the initrd generator
IMAGE="initrd"
UEFI_OPTS="--no-uefi"
else
exit 0
fi
if [[ "$KERNEL_INSTALL_UKI_GENERATOR" = "dracut" ]]; then
# We are chosen to generate the UKI as well as initrd
IMAGE="uki.efi"
UEFI_OPTS="--uefi"
fi
if [[ -f ${KERNEL_IMAGE%/*}/$IMAGE ]]; then
# we found an initrd or uki.efi at the same place as the kernel
# use this and don't generate a new one
[[ $KERNEL_INSTALL_VERBOSE == 1 ]] && echo \
"There is an $IMAGE image at the same place as the kernel, skipping generating a new one"
cp --reflink=auto "${KERNEL_IMAGE%/*}/$IMAGE" "$KERNEL_INSTALL_STAGING_AREA/$IMAGE" \
&& chown root:root "$KERNEL_INSTALL_STAGING_AREA/$IMAGE" \
&& chmod 0600 "$KERNEL_INSTALL_STAGING_AREA/$IMAGE" \
&& exit 0
fi
if [ -n "$KERNEL_INSTALL_CONF_ROOT" ]; then
if [ -f "$KERNEL_INSTALL_CONF_ROOT/cmdline" ]; then
read -r -d '' -a BOOT_OPTIONS < "$KERNEL_INSTALL_CONF_ROOT/cmdline"
fi
elif [[ -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
# shellcheck disable=SC2046
dracut -f \
--add-confdir hostonly \
${noimageifnotneeded:+--noimageifnotneeded} \
$([[ $KERNEL_INSTALL_VERBOSE == 1 ]] && echo --verbose) \
$([[ -n $KERNEL_IMAGE ]] && echo --kernel-image "$KERNEL_IMAGE") \
"$UEFI_OPTS" \
--kver "$KERNEL_VERSION" \
"$KERNEL_INSTALL_STAGING_AREA/$IMAGE" || exit 1
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