name : 51-dracut-rescue.install #!/bin/bash export LANG=C COMMAND="$1" KERNEL_VERSION="$2" BOOT_DIR_ABS="${3%/*}/0-rescue" KERNEL_IMAGE="$4" dropindirs_sort() { suffix=$1; shift args=("$@") files=$( while (( $# > 0 )); do for i in ${1}/*${suffix}; do [[ -f $i ]] && echo ${i##*/} done shift done | sort -Vu ) for f in $files; do for d in "${args[@]}"; do if [[ -f "$d/$f" ]]; then echo "$d/$f" continue 2 fi done done } [[ -f /etc/os-release ]] && . /etc/os-release if [[ ${KERNEL_INSTALL_MACHINE_ID+x} ]]; then MACHINE_ID=$KERNEL_INSTALL_MACHINE_ID elif [[ -f /etc/machine-id ]] ; then read MACHINE_ID < /etc/machine-id fi if ! [[ $MACHINE_ID ]]; then exit 0 fi if [[ -f /etc/kernel/cmdline ]]; then read -r -d '' -a BOOT_OPTIONS < /etc/kernel/cmdline elif [[ -f /usr/lib/kernel/cmdline ]]; then read -r -d '' -a BOOT_OPTIONS < /usr/lib/kernel/cmdline else read -r -d '' -a line < /proc/cmdline for i in "${line[@]}"; do [[ "${i#initrd=*}" != "$i" ]] && continue BOOT_OPTIONS+=("$i") done fi if [[ -d "${BOOT_DIR_ABS%/*}" ]]; then BOOT_DIR="/${MACHINE_ID}/0-rescue" BOOT_ROOT=${BOOT_DIR_ABS%$BOOT_DIR} LOADER_ENTRY="$BOOT_ROOT/loader/entries/${MACHINE_ID}-0-rescue.conf" KERNEL="linux" INITRD="initrd" else BLS_DIR="/boot/loader/entries" BOOT_DIR_ABS="/boot" LOADER_ENTRY="$BLS_DIR/${MACHINE_ID}-0-rescue.conf" KERNEL="vmlinuz-0-rescue-${MACHINE_ID}" INITRD="initramfs-0-rescue-${MACHINE_ID}.img" fi ret=0 case "$COMMAND" in add) [[ -f "$LOADER_ENTRY" ]] && [[ -f "$BOOT_DIR_ABS/$KERNEL" ]] \ && [[ -f "$BOOT_DIR_ABS/$INITRD" ]] && exit 0 # source our config dir for f in $(dropindirs_sort ".conf" "/etc/dracut.conf.d" "/usr/lib/dracut/dracut.conf.d"); do [[ -e $f ]] && . "$f" done [[ $dracut_rescue_image != "yes" ]] && exit 0 [[ -d "$BOOT_DIR_ABS" ]] || mkdir -p "$BOOT_DIR_ABS" if ! cp "$KERNEL_IMAGE" "$BOOT_DIR_ABS/$KERNEL"; then echo "Can't copy '$KERNEL_IMAGE to '$BOOT_DIR_ABS/$KERNEL'!" >&2 fi if [[ ! -f "$BOOT_DIR_ABS/$INITRD" ]]; then dracut -f --no-hostonly -a "rescue" "$BOOT_DIR_ABS/$INITRD" "$KERNEL_VERSION" ((ret+=$?)) fi if [[ "${BOOT_DIR_ABS}" != "/boot" ]]; then { echo "title $PRETTY_NAME - Rescue Image" echo "version $KERNEL_VERSION" echo "machine-id $MACHINE_ID" echo "options ${BOOT_OPTIONS[@]} rd.auto=1" echo "linux $BOOT_DIR/linux" echo "initrd $BOOT_DIR/initrd" } > $LOADER_ENTRY else if [[ -e "${BLS_DIR}/${MACHINE_ID}-${KERNEL_VERSION}.conf" ]]; then cp -aT "${BLS_DIR}/${MACHINE_ID}-${KERNEL_VERSION}.conf" $LOADER_ENTRY else cp -aT "${KERNEL_IMAGE%/*}/bls.conf" $LOADER_ENTRY fi sed -i 's/'$KERNEL_VERSION'/0-rescue-'${MACHINE_ID}'/' $LOADER_ENTRY fi ((ret+=$?)) ;; remove) exit 0 ;; *) usage ret=1;; esac exit $ret