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