pfSense

#!/bin/sh

#

# rc.dumpon

#

# part of pfSense (https://www.pfsense.org)

# Copyright (c) 2004-2013 BSD Perimeter

# Copyright (c) 2013-2016 Electric Sheep Fencing

# Copyright (c) 2014-2022 Rubicon Communications, LLC (Netgate)

# All rights reserved.

#

# Based on src/etc/rc.d/dumpon from FreeBSD

#

# Licensed under the Apache License, Version 2.0 (the "License");

# you may not use this file except in compliance with the License.

# You may obtain a copy of the License at

#

# http://www.apache.org/licenses/LICENSE-2.0

#

# Unless required by applicable law or agreed to in writing, software

# distributed under the License is distributed on an "AS IS" BASIS,

# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

# See the License for the specific language governing permissions and

# limitations under the License.

dumpon_try()

{

	if /sbin/dumpon "${1}" ; then

		# Make a symlink in devfs for savecore

		echo "Using ${1} for dump device."

		ln -fs "${1}" /dev/dumpdev

		return 0

	fi

	echo "Unable to specify $1 as a dump device."

	return 1

}

# Enable dumpdev so that savecore can see it. Enable it

# early so a crash early in the boot process can be caught.

#

while read dev mp type more ; do

	[ "${type}" = "swap" ] || continue

	[ -c "${dev}" ] || continue

	dumpon_try "${dev}" && works=true

done </etc/fstab

if [ "${works}" != "true" ]; then

	# fstab entries did not work, try swap labels

	for dev in /dev/label/swap*; do

		if [ ! -e "${dev}" ]; then

			continue;

		fi

		dumpon_try "${dev}" && works=true

	done

	if [ "${works}" != "true" ]; then

		echo "No suitable dump device was found." 1>&2

		exit

	fi

fi