[ -e /run/initramfs/bin/sh ] && exit 0
[ -e /run/initramfs/.need_shutdown ] || exit 0
+# SIGTERM signal is received upon forced shutdown: ignore the signal
+# We want to remain alive to be able to trap unpacking errors to avoid
+# switching root to an incompletely unpacked initramfs
+trap 'echo "Received SIGTERM signal, ignoring!" >&2' TERM
+
KERNEL_VERSION="$(uname -r)"
[[ $dracutbasedir ]] || dracutbasedir=/usr/lib/dracut
SKIP="$dracutbasedir/skipcpio"
-[[ -x $SKIP ]] || SKIP=cat
+[[ -x $SKIP ]] || SKIP="cat"
-[[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id
+if [[ -d /efi/Default ]] || [[ -d /boot/Default ]] || [[ -d /boot/efi/Default ]]; then
+ MACHINE_ID="Default"
+elif [[ -s /etc/machine-id ]]; then
+ read -r MACHINE_ID < /etc/machine-id
+ [[ $MACHINE_ID == "uninitialized" ]] && MACHINE_ID="Default"
+else
+ MACHINE_ID="Default"
+fi
-mount -o ro /boot &>/dev/null || true
+mount -o ro /boot &> /dev/null || true
-if [[ $MACHINE_ID ]] && [[ -d /boot/${MACHINE_ID} || -L /boot/${MACHINE_ID} ]] ; then
+if [[ -d /efi/loader/entries || -L /efi/loader/entries ]] \
+ && [[ -d /efi/$MACHINE_ID || -L /efi/$MACHINE_ID ]]; then
+ IMG="/efi/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
+elif [[ -d /boot/loader/entries || -L /boot/loader/entries ]] \
+ && [[ -d /boot/$MACHINE_ID || -L /boot/$MACHINE_ID ]]; then
IMG="/boot/${MACHINE_ID}/${KERNEL_VERSION}/initrd"
+elif [[ -d /boot/efi/loader/entries || -L /boot/efi/loader/entries ]] \
+ && [[ -d /boot/efi/$MACHINE_ID || -L /boot/efi/$MACHINE_ID ]]; then
+ IMG="/boot/efi/$MACHINE_ID/$KERNEL_VERSION/initrd"
+elif [[ -f /lib/modules/${KERNEL_VERSION}/initrd ]]; then
+ IMG="/lib/modules/${KERNEL_VERSION}/initrd"
+elif [[ -f /boot/initramfs-${KERNEL_VERSION}.img ]]; then
+ IMG="/boot/initramfs-${KERNEL_VERSION}.img"
+elif mountpoint -q /efi; then
+ IMG="/efi/$MACHINE_ID/$KERNEL_VERSION/initrd"
+elif mountpoint -q /boot/efi; then
+ IMG="/boot/efi/$MACHINE_ID/$KERNEL_VERSION/initrd"
+else
+ echo "No initramfs image found to restore!"
+ exit 1
fi
-[[ -f $IMG ]] || IMG="/boot/initramfs-${KERNEL_VERSION}.img"
cd /run/initramfs
-[ -f .need_shutdown -a -f "$IMG" ] || exit 1
-
-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
+if (command -v zcat > /dev/null && $SKIP "$IMG" 2> /dev/null | zcat 2> /dev/null | cpio -id --no-absolute-filenames --quiet > /dev/null 2>&1) \
+ || (command -v bzcat > /dev/null && $SKIP "$IMG" 2> /dev/null | bzcat 2> /dev/null | cpio -id --no-absolute-filenames --quiet > /dev/null 2>&1) \
+ || (command -v xzcat > /dev/null && $SKIP "$IMG" 2> /dev/null | xzcat 2> /dev/null | cpio -id --no-absolute-filenames --quiet > /dev/null 2>&1) \
+ || (command -v lz4 > /dev/null && $SKIP "$IMG" 2> /dev/null | lz4 -d -c 2> /dev/null | cpio -id --no-absolute-filenames --quiet > /dev/null 2>&1) \
+ || (command -v lzop > /dev/null && $SKIP "$IMG" 2> /dev/null | lzop -d -c 2> /dev/null | cpio -id --no-absolute-filenames --quiet > /dev/null 2>&1) \
+ || (command -v zstd > /dev/null && $SKIP "$IMG" 2> /dev/null | zstd -d -c 2> /dev/null | cpio -id --no-absolute-filenames --quiet > /dev/null 2>&1) \
+ || ($SKIP "$IMG" 2> /dev/null | cpio -id --no-absolute-filenames --quiet > /dev/null 2>&1); then
rm -f -- .need_shutdown
else
# something failed, so we clean up
exit 1
fi
+if [[ -d squash ]]; then
+ if ! unsquashfs -no-xattrs -f -d . squash-root.img > /dev/null; then
+ echo "Squash module is enabled for this initramfs but failed to unpack squash-root.img" >&2
+ rm -f -- /run/initramfs/shutdown
+ exit 1
+ fi
+fi
+
+if [ -e /etc/selinux/config -a -x /usr/sbin/setfiles ]; then
+ . /etc/selinux/config
+ [ -n "${SELINUXTYPE}" ] && /usr/sbin/setfiles -v -r /run/initramfs /etc/selinux/"${SELINUXTYPE}"/contexts/files/file_contexts /run/initramfs > /dev/null
+fi
+
exit 0