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#!/bin/sh
#
# pfSense-upgrade.wrapper
#
# part of pfSense (https://www.pfsense.org)
# Copyright (c) 2015-2016 Rubicon Communications, LLC (Netgate)
# All rights reserved.
#
# 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.
pfsense_upgrade=$(realpath $(dirname $0)/../libexec/$(basename $0))
lockfile="/tmp/$(basename $0).lock"
if [ ! -f ${pfsense_upgrade} ]; then
echo "ERROR: Unable to find ${pfsense_upgrade}"
exit 1
fi
# lockf return codes, from sysexits(3)
EX_TEMPFAIL=75 # The specified lock file was already locked by another process.
EX_CANTCREAT=73 # The lockf utility was unable to create the lock file, e.g.,
# because of insufficient access privileges.
EX_OSERR=71 # A system call (e.g., fork(2)) failed unexpectedly.
EX_SOFTWARE=70 # The command did not exit normally, but may have been signaled
# or stopped.
/usr/bin/lockf -s -t 5 ${lockfile} ${pfsense_upgrade} "$@"
rc=$?
unset error
case "$rc" in
${EX_TEMPFAIL})
echo "Another instance is already running... Aborting!"
exit 1
;;
${EX_CANTCREAT})
echo "ERROR: Unable to create lockfile ${lockfile}"
exit 1
;;
${EX_OSERR})
echo "ERROR: An unexpected OS error happened"
error=1
;;
${EX_SOFTWARE})
echo "ERROR: An unexpected error happened"
error=1
;;
esac
[ -f "${lockfile}" ] \
&& rm -f ${lockfile}
[ -n "${error}" ] \
&& exit 1
exit $rc
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