name : dracut-initramfs-restore #!/usr/bin/bash set -e # do some sanity checks first [ -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 $SKIP ]] || SKIP="cat" if [[ -d /efi/Default ]] || [[ -d /boot/Default ]] || [[ -d /boot/efi/Default ]]; then MACHINE_ID="Default" elif [[ -f /etc/machine-id ]]; then read -r MACHINE_ID < /etc/machine-id else MACHINE_ID="Default" fi mount -o ro /boot &> /dev/null || true if [[ -d /efi/loader/entries || -L /efi/loader/entries ]] \ && [[ -d /efi/$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 cd /run/initramfs if $SKIP "$IMG" | zcat | cpio -id --no-absolute-filenames --quiet > /dev/null \ || $SKIP "$IMG" | bzcat | cpio -id --no-absolute-filenames --quiet > /dev/null \ || $SKIP "$IMG" | xzcat | cpio -id --no-absolute-filenames --quiet > /dev/null \ || $SKIP "$IMG" | lz4 -d -c | cpio -id --no-absolute-filenames --quiet > /dev/null \ || $SKIP "$IMG" | lzop -d -c | cpio -id --no-absolute-filenames --quiet > /dev/null \ || $SKIP "$IMG" | zstd -d -c | cpio -id --no-absolute-filenames --quiet > /dev/null \ || $SKIP "$IMG" | cpio -id --no-absolute-filenames --quiet > /dev/null; then rm -f -- .need_shutdown else # something failed, so we clean up echo "Unpacking of $IMG to /run/initramfs failed" >&2 rm -f -- /run/initramfs/shutdown exit 1 fi if [[ -d squash ]]; then if ! unsquashfs -no-xattrs -f -d . squash-root.img > /dev/null; then echo "Squash module is enabled for this initramfs but failed to unpack squash-root.img" >&2 rm -f -- /run/initramfs/shutdown exit 1 fi fi if [ -e /etc/selinux/config -a -x /usr/sbin/setfiles ]; then . /etc/selinux/config [ -n "${SELINUXTYPE}" ] && /usr/sbin/setfiles -v -r /run/initramfs /etc/selinux/"${SELINUXTYPE}"/contexts/files/file_contexts /run/initramfs > /dev/null fi exit 0