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133 lines
3.4 KiB
133 lines
3.4 KiB
#!/bin/bash |
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export LANG=C |
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COMMAND="$1" |
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KERNEL_VERSION="$2" |
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BOOT_DIR_ABS="${3%/*}/0-rescue" |
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KERNEL_IMAGE="$4" |
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dropindirs_sort() |
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{ |
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suffix=$1; shift |
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args=("$@") |
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files=$( |
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while (( $# > 0 )); do |
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for i in "${1}"/*"${suffix}"; do |
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[[ -f $i ]] && echo "${i##*/}" |
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done |
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shift |
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done | sort -Vu |
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) |
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for f in $files; do |
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for d in "${args[@]}"; do |
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if [[ -f "$d/$f" ]]; then |
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echo "$d/$f" |
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continue 2 |
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fi |
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done |
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done |
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} |
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[[ -f /etc/os-release ]] && . /etc/os-release |
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if [[ ${KERNEL_INSTALL_MACHINE_ID+x} ]]; then |
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MACHINE_ID=$KERNEL_INSTALL_MACHINE_ID |
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elif [[ -f /etc/machine-id ]] ; then |
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read -r MACHINE_ID < /etc/machine-id |
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fi |
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if ! [[ $MACHINE_ID ]]; then |
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exit 0 |
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fi |
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if [[ -f /etc/kernel/cmdline ]]; then |
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read -r -d '' -a BOOT_OPTIONS < /etc/kernel/cmdline |
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elif [[ -f /usr/lib/kernel/cmdline ]]; then |
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read -r -d '' -a BOOT_OPTIONS < /usr/lib/kernel/cmdline |
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else |
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declare -a BOOT_OPTIONS |
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read -r -d '' -a line < /proc/cmdline |
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for i in "${line[@]}"; do |
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[[ "${i#initrd=*}" != "$i" ]] && continue |
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BOOT_OPTIONS+=("$i") |
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done |
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fi |
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if [[ -d "${BOOT_DIR_ABS%/*}" ]]; then |
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BOOT_DIR="/${MACHINE_ID}/0-rescue" |
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BOOT_ROOT=${BOOT_DIR_ABS%$BOOT_DIR} |
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LOADER_ENTRY="$BOOT_ROOT/loader/entries/${MACHINE_ID}-0-rescue.conf" |
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KERNEL="linux" |
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INITRD="initrd" |
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else |
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BLS_DIR="/boot/loader/entries" |
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BOOT_DIR_ABS="/boot" |
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LOADER_ENTRY="$BLS_DIR/${MACHINE_ID}-0-rescue.conf" |
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KERNEL="vmlinuz-0-rescue-${MACHINE_ID}" |
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INITRD="initramfs-0-rescue-${MACHINE_ID}.img" |
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fi |
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ret=0 |
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case "$COMMAND" in |
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add) |
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[[ -f "$LOADER_ENTRY" ]] && [[ -f "$BOOT_DIR_ABS/$KERNEL" ]] \ |
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&& [[ -f "$BOOT_DIR_ABS/$INITRD" ]] && exit 0 |
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# source our config dir |
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for f in $(dropindirs_sort ".conf" "/etc/dracut.conf.d" "/usr/lib/dracut/dracut.conf.d"); do |
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if [[ -e $f ]]; then |
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# shellcheck disable=SC1090 |
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. "$f" |
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fi |
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done |
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# shellcheck disable=SC2154 |
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[[ $dracut_rescue_image != "yes" ]] && exit 0 |
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[[ -d "$BOOT_DIR_ABS" ]] || mkdir -p "$BOOT_DIR_ABS" |
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if ! cp --reflink=auto "$KERNEL_IMAGE" "$BOOT_DIR_ABS/$KERNEL"; then |
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echo "Can't copy '$KERNEL_IMAGE to '$BOOT_DIR_ABS/$KERNEL'!" >&2 |
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fi |
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if [[ ! -f "$BOOT_DIR_ABS/$INITRD" ]]; then |
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dracut -f --no-hostonly -a "rescue" "$BOOT_DIR_ABS/$INITRD" "$KERNEL_VERSION" |
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((ret+=$?)) |
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fi |
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if [[ "${BOOT_DIR_ABS}" != "/boot" ]]; then |
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{ |
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echo "title $PRETTY_NAME - Rescue Image" |
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echo "version $KERNEL_VERSION" |
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echo "machine-id $MACHINE_ID" |
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echo "options ${BOOT_OPTIONS[*]} rd.auto=1" |
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echo "linux $BOOT_DIR/linux" |
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echo "initrd $BOOT_DIR/initrd" |
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} > "$LOADER_ENTRY" |
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else |
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if [[ -e "${BLS_DIR}/${MACHINE_ID}-${KERNEL_VERSION}.conf" ]]; then |
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cp -aT "${BLS_DIR}/${MACHINE_ID}-${KERNEL_VERSION}.conf" "$LOADER_ENTRY" |
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else |
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cp -aT "${KERNEL_IMAGE%/*}/bls.conf" "$LOADER_ENTRY" |
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fi |
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sed -i "s/${KERNEL_VERSION}/0-rescue-${MACHINE_ID}/" "$LOADER_ENTRY" |
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fi |
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((ret+=$?)) |
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;; |
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remove) |
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exit 0 |
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;; |
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*) |
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usage |
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ret=1;; |
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esac |
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exit $ret
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