68 lines
1.6 KiB
Bash
Executable File
68 lines
1.6 KiB
Bash
Executable File
#!/bin/sh
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# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
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# ex: ts=8 sw=4 sts=4 et filetype=sh
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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="$3"
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BOOT_DIR="${3#/boot}"
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[[ -f /etc/os-release ]] && . /etc/os-release
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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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readarray -t BOOT_OPTIONS < /etc/kernel/cmdline
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fi
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if ! [[ "${BOOT_OPTIONS[@]}" ]]; then
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readarray -t BOOT_OPTIONS < /proc/cmdline
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fi
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if ! [[ $BOOT_OPTIONS ]]; then
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exit 1
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fi
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LOADER_ENTRY="/boot/loader/entries/${MACHINE_ID}-00-${KERNEL_VERSION}-rescue.conf"
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ret=0
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case "$COMMAND" in
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add)
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for i in "/boot/loader/entries/${MACHINE_ID}-00-"*"-rescue.conf"; do
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[[ -f $i ]] && exit 0
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done
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dracut --no-hostonly -a "rescue" "$3"/initrd-rescue "$2"
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((ret+=$?))
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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-rescue"
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} > $LOADER_ENTRY
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((ret+=$?))
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if (( $ret == 0 )); then
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command -v yumdb &>/dev/null && \
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yumdb set installonly keep kernel-$KERNEL_VERSION >/dev/null
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fi
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;;
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remove)
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[[ -f $LOADER_ENTRY ]] || exit 0
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rm -f "$LOADER_ENTRY" "$3"/initrd-rescue
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;;
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*)
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usage
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ret=1;;
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esac
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((ret+=$?))
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exit $ret
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