#!/bin/bash
#
# Copyright 2015 Hewlett-Packard Development Company, L.P.
#
# 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.
#
#
# This is a terrible, terrible, truly terrible work around for
# environments that have libvirt < 1.2.11. ebtables requires that you
# specifically tell it you would like to not race and get punched in
# the face when 2 run at the same time with a --concurrent flag.
#
# INSTALL instructions
#
# * Copy /sbin/ebtables to /sbin/ebtables.real
# * Copy the ebtables.workaround script to /sbin/ebtables
#
# Note: upgrades to ebtables will overwrite this work around. If you
# are packaging this file consider putting a trigger in place so that
# the workaround is replaced after ebtables upgrade.
#
# Additional Note: this file can be removed from nova once our libvirt
# minimum is >= 1.2.11.

flock -w 300 /var/lock/ebtables.nova /sbin/ebtables.real $@