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#!/bin/sh

# Copyright (c) 2017 Franco Fichtner <franco@opnsense.org>
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.

SWAPUSE=$(grep -c use_swap_file /conf/config.xml)
SWAPFILE=/usr/swap0
SWAPSIZE=2048
SWAPDEV=md98

# auto-configured fstab entries:

swapon -a

# swap file option for SSDs:

if [ "${SWAPUSE}" != "0" ]; then
	if [ ! -f ${SWAPFILE} ]; then
		dd if=/dev/zero of=${SWAPFILE} bs=1m count=${SWAPSIZE}
		chmod 0600 ${SWAPFILE}
	fi
	if mdconfig -a -t vnode -f ${SWAPFILE} -u ${SWAPDEV}; then
		swapon /dev/${SWAPDEV}
	fi
else
	rm -f ${SWAPFILE}
fi

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