#!/bin/sh
#
# This kdump-tools hook includes kdump sysctl overrides to the
# kdump minimal initrd.
#
# OPTION=VAR is a control provided only by Ubuntu initramfs-tools,
# so this is innocuous and harmless on Debian - kept here for
# better code sync between Debian and Ubuntu.
# shellcheck disable=SC2034
OPTION=KDUMP

PREREQ=""
prereqs()
{
	echo "$PREREQ"
}

case $1 in
prereqs)
	prereqs
	exit 0
	;;
esac

# In Debian we don't have the fine-tuned control of what hooks to run
# based on OPTION=VAR (like Ubuntu). So, we need the folowing check
# in order to prevent this hook to run for regular initrds - it should
# only be executed for kdump smaller initrd.
if [ "${CONFDIR}" != "/var/lib/kdump/initramfs-tools" ]; then
	exit 0
fi

. /usr/share/initramfs-tools/hook-functions

KDUMP_SYSCTL_PATH="/etc/kdump/sysctl.conf"

# Avoid stopping the initrd generation in case of no sysctl overrides
if [ ! -f ${KDUMP_SYSCTL_PATH} ]; then
	echo "WARNING: kdump-tools hook couldn't find ${KDUMP_SYSCTL_PATH}"
	exit 0
fi

copy_file config ${KDUMP_SYSCTL_PATH}