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chore: make initramfs script POSIX-compliant #548

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Merged
fiftydinar merged 1 commit into from
Feb 9, 2026
Merged

chore: make initramfs script POSIX-compliant #548

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28 changes: 16 additions & 12 deletions modules/initramfs/initramfs.sh
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Original file line number Diff line number Diff line change
@@ -1,19 +1,19 @@
#!/usr/bin/env bash
#!/bin/sh

set -euo pipefail
set -eu

if ! command -v rpm-ostree &> /dev/null || ! command -v bootc &> /dev/null; then
if ! command -v rpm-ostree >/dev/null 2>&1 || ! command -v bootc >/dev/null 2>&1; then
echo "This module is only compatible with Fedora Atomic images"
exit 1
fi

if [[ "${OS_VERSION}" -le 40 ]]; then
if [ "${OS_VERSION}" -le 40 ]; then
echo "This module is only compatible with Fedora 41+ images."
exit 1
fi

# If images already installed cliwrap, use it. Only used in transition period, so it should be removed when base images like Ublue remove cliwrap
if [[ -f "/usr/libexec/rpm-ostree/wrapped/dracut" ]]; then
if [ -f "/usr/libexec/rpm-ostree/wrapped/dracut" ]; then
DRACUT="/usr/libexec/rpm-ostree/wrapped/dracut"
else
DRACUT="/usr/bin/dracut"
Expand All @@ -25,10 +25,12 @@ fi
# Refactor the module to support UKIs once they are starting to be used, if possible.
# That won't be soon, so this module should work for good period of time

KERNEL_MODULES_PATH="/usr/lib/modules"
readarray -t QUALIFIED_KERNEL < <(find "${KERNEL_MODULES_PATH}" -mindepth 1 -maxdepth 1 -type d -printf "%f\n")
kernel_count=0
for kernel_path in /usr/lib/modules/*/; do
kernel_count=$(( kernel_count + 1 ))
done

if [[ "${#QUALIFIED_KERNEL[@]}" -gt 1 ]]; then
if [ "${kernel_count}" -gt 1 ]; then
echo "NOTE: There are several versions of kernel's initramfs."
echo " There is a possibility that you have multiple kernels installed in the image."
echo " It is most ideal to have only 1 kernel, to make initramfs regeneration faster."
Expand All @@ -45,17 +47,19 @@ kmsgloglvl=0
fileloglvl=0
EOF

for qual_kernel in "${QUALIFIED_KERNEL[@]}"; do
INITRAMFS_IMAGE="${KERNEL_MODULES_PATH}/${qual_kernel}/initramfs.img"
for kernel_path in /usr/lib/modules/*/; do
kernel_path="${kernel_path%/}"
initramfs_image="${kernel_path}/initramfs.img"
qual_kernel=${kernel_path##*/}
echo "Starting initramfs regeneration for kernel version: ${qual_kernel}"
"${DRACUT}" \
--kver "${qual_kernel}" \
--force \
--add 'ostree' \
--no-hostonly \
--reproducible \
"${INITRAMFS_IMAGE}"
chmod 0600 "${INITRAMFS_IMAGE}"
"${initramfs_image}"
chmod 0600 "${initramfs_image}"
done

rm -- "${temp_conf_file}"
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