s390utils/52-zipl-rescue.install

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#!/bin/bash
[[ -f /etc/os-release ]] && . /etc/os-release
[[ -f /etc/sysconfig/kernel ]] && . /etc/sysconfig/kernel
COMMAND="$1"
KERNEL_VERSION="$2"
BOOT_DIR_ABS="$3"
KERNEL_IMAGE="$4"
MACHINE_ID=$KERNEL_INSTALL_MACHINE_ID
BLS_DIR="/boot/loader/entries"
[[ "$KERNEL_VERSION" == *\+* ]] && flavor=-"${KERNEL_VERSION##*+}"
case "$COMMAND" in
add)
if [[ ! -f /sbin/new-kernel-pkg ]]; then
declare -a BOOT_OPTIONS
if [[ -f /etc/kernel/cmdline ]]; then
read -r -d '' -a BOOT_OPTIONS < /etc/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 ! [[ ${BOOT_OPTIONS[*]} ]]; then
echo "Could not determine the kernel command line parameters." >&2
echo "Please specify the kernel command line in /etc/kernel/cmdline!" >&2
exit 1
fi
BLS_RESCUE="${BLS_DIR}/${MACHINE_ID}-0-rescue.conf"
if [[ -f "${BLS_RESCUE}" ]] && grep -q '^options.*$kernelopts' "${BLS_RESCUE}"; then
sed -i -e "s,^linux.*,linux /boot/vmlinuz-0-rescue-${MACHINE_ID},g" "${BLS_RESCUE}"
sed -i -e "s,^initrd.*,initrd /boot/initramfs-0-rescue-${MACHINE_ID}.img,g" "${BLS_RESCUE}"
sed -i -e "s#^options.*#options ${BOOT_OPTIONS[*]}#g" "${BLS_RESCUE}"
fi
fi
;;
*)
;;
esac