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#!/bin/sh

# Copyright (C) 2019 Deciso B.V.
# Copyright (c) 2014-2022 Franco Fichtner <franco@opnsense.org>
# Copyright (c) 2004-2010 Scott Ullrich <sullrich@gmail.com>
# Copyright (c) 2003-2004 Manuel Kasper <mk@neon1.net>
#
# 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.

USE_MFS_VAR=$(grep -c 'use_mfs_var[^_]' /conf/config.xml)

# see if / is writable (aka. not a live media boot)
if _tmpdir=$(mktemp -d -q /.diskless.XXXXXX); then
	# only remove the directory
	rmdir ${_tmpdir}
else
	# config restore for install media does not support
	# this as neither /var/log nor /root are persistent
	USE_MFS_VAR=0

	# force the permission of /root to avoid a health audit
	# error on ISO format that will not have the correct
	# permission on boot
	chmod 750 /root
fi

# ensure default directories in /var
if ! mtree -deiU -f /etc/mtree/BSD.var.dist -p /var > /dev/null; then
	echo -n "Error while applying /var mtree specification, trying to continue"
	sleep 5
fi

# old config files are stored in this place
mkdir -p /var/etc

# Clear all files in this directory to prevent stale state of
# services.  At one point this also helped to prevent shutdown(8)
# from dropping "nologin" into the directory, preventing login on
# the next boot.  However, do not touch the directory tree.
for RUNDIR in /var/run /var/dhcpd/var/run /var/unbound/var/run; do
	if [ -d ${RUNDIR} ]; then
		find ${RUNDIR} ! -type d -exec rm {} \;
	fi
done

# setup output directory for php sessions
mkdir -p /var/lib/php/sessions
chown root:wheel /var/lib/php/sessions
chmod 750 /var/lib/php/sessions
rm -f /var/lib/php/sessions/sess_*

if [ ${USE_MFS_VAR} -ne 0 ]; then
	MAX_MFS_VAR=$(grep 'max_mfs_var' /conf/config.xml | sed 's/[^>]*>\([^<]*\)<.*/\1/')
	MAX_MEM_SYS=$(sysctl -n hw.physmem)

	if [ -z "${MAX_MFS_VAR}" ]; then
		# cap to 50% by default to avoid swapping
		MAX_MFS_VAR=50
	fi

	echo -n "Setting up /var/log memory disk..."
	mount -t tmpfs -o size=$((MAX_MEM_SYS / 100 * MAX_MFS_VAR)) tmpfs /var/log
	echo "done."
fi

# prep boog log
: > /var/log/boot.log

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