| #!/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 [[ ! -f /etc/machine-id ]] || [[ ! -s /etc/machine-id ]]; then |
| systemd-machine-id-setup |
| fi |
| |
| [[ -f /etc/machine-id ]] && read MACHINE_ID < /etc/machine-id |
| |
| 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 |
| fi |
| |
| if ! [[ "${BOOT_OPTIONS[@]}" ]]; then |
| read -r -d '' -a line < /proc/cmdline |
| for i in "${line[@]}"; do |
| [[ "${i#initrd=*}" != "$i" ]] && continue |
| BOOT_OPTIONS+=("$i") |
| done |
| fi |
| |
| if ! [[ ${BOOT_OPTIONS[*]} ]]; then |
| echo "Could not determine the kernel command line parameters." >&2 |
| echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2 |
| exit 1 |
| fi |
| |
| LOADER_ENTRY="/boot/loader/entries/${MACHINE_ID}-0-rescue.conf" |
| BOOT_DIR="/${MACHINE_ID}/0-rescue" |
| |
| ret=0 |
| |
| case "$COMMAND" in |
| add) |
| for i in "/boot/loader/entries/${MACHINE_ID}-0-rescue.conf"; do |
| [[ -f $i ]] && exit 0 |
| done |
| |
| # 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 "$BOOT_DIR_ABS" |
| |
| if ! cp --reflink=auto "$KERNEL_IMAGE" "$BOOT_DIR_ABS"/linux; then |
| echo "Can't copy '$KERNEL_IMAGE to '$BOOT_DIR_ABS/linux'!" >&2 |
| fi |
| |
| dracut --no-hostonly -a "rescue" "$BOOT_DIR_ABS"/initrd "$KERNEL_VERSION" |
| ((ret+=$?)) |
| |
| { |
| 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" |
| } > $LOADER_ENTRY |
| ((ret+=$?)) |
| ;; |
| |
| remove) |
| exit 0 |
| ;; |
| |
| *) |
| usage |
| ret=1;; |
| esac |
| |
| ((ret+=$?)) |
| |
| exit $ret |