#!/bin/bash
-# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
-# ex: ts=8 sw=4 sts=4 et filetype=sh
set -e
+# do some sanity checks first
+[ -e /run/initramfs/bin/sh ] && exit 0
+[ -e /run/initramfs/.need_shutdown ] || exit 0
+
KERNEL_VERSION="$(uname -r)"
+[[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
+SKIP="$dracutbasedir/skipcpio"
+[[ -x $SKIP ]] || SKIP=cat
+
[[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
+mount -o ro /boot &>/dev/null || true
+
if [[ $MACHINE_ID ]] && [[ -d /boot/${MACHINE_ID} || -L /boot/${MACHINE_ID} ]] ; then
IMG="/boot/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
fi
cd /run/initramfs
[ -f .need_shutdown -a -f "$IMG" ] || exit 1
-if zcat "$IMG" | cpio -id --quiet >/dev/null; then
+
+if $SKIP "$IMG" | zcat | cpio -id --no-absolute-filenames --quiet >/dev/null; then
+ rm -f -- .need_shutdown
+elif $SKIP "$IMG" | xzcat | cpio -id --no-absolute-filenames --quiet >/dev/null; then
+ rm -f -- .need_shutdown
+elif $SKIP "$IMG" | lz4 -d -c | cpio -id --no-absolute-filenames --quiet >/dev/null; then
rm -f -- .need_shutdown
-elif xzcat "$IMG" | cpio -id --quiet >/dev/null; then
+elif $SKIP "$IMG" | zstd -d -c | cpio -id --no-absolute-filenames --quiet >/dev/null; then
rm -f -- .need_shutdown
else
# something failed, so we clean up