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# Copyright 2004-2007 Gentoo Foundation
# Copyright 2007 Roy Marples
# All rights reserved
# 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.
bridge_depend() {
before interface macnet
program /sbin/brctl
}
_config_vars="$_config_vars bridge bridge_add brctl"
_is_bridge() {
brctl show 2>/dev/null | grep -q "^${IFACE}[[:space:]]"
}
bridge_pre_start() {
local ports= brif= iface="${IFACE}" e= x=
local ports="$(_get_array "bridge_${IFVAR}")"
local opts="$(_get_array "brctl_${IFVAR}")"
eval brif=\$bridge_add_${IFVAR}
[ -z "${ports}" -a -z "${brif}" -a -z "${opts}" ] && return 0
[ -n "${ports}" ] && bridge_post_stop
(
if [ -z "${ports}" -a -n "${brif}" ]; then
ports="${IFACE}"
IFACE="${brif}"
else
ports="${ports}"
metric=1000
fi
if ! _is_bridge; then
ebegin "Creating bridge ${IFACE}"
if ! brctl addbr "${IFACE}"; then
eend 1
return 1
fi
fi
local IFS="$__IFS"
for x in ${opts}; do
unset IFS
set -- ${x}
x=$1
shift
set -- "${x}" "${IFACE}" "$@"
brctl "$@"
done
unset IFS
if [ -n "${ports}" ]; then
einfo "Adding ports to ${IFACE}"
eindent
local OIFACE="${IFACE}"
for x in ${ports}; do
ebegin "${x}"
local IFACE="${x}"
_set_flag promisc
_up
if ! brctl addif "${OIFACE}" "${x}"; then
_set_flag -promisc
eend 1
return 1
fi
eend 0
done
eoutdent
fi
) || return 1
# Bring up the bridge
_up
}
bridge_post_stop() {
local port= ports= delete=false extra=
if _is_bridge; then
ebegin "Destroying bridge ${IFACE}"
_down
ports="$(brctl show 2>/dev/null | \
sed -n -e '/^'"${IFACE}"'[[:space:]]/,/^\S/ { /^\('"${IFACE}"'[[:space:]]\|\t\)/s/^.*\t//p }')"
delete=true
iface=${IFACE}
eindent
else
# Work out if we're added to a bridge for removal or not
eval set -- $(brctl show 2>/dev/null | sed -e "s/'/'\\\\''/g" -e "s/$/'/g" -e "s/^/'/g")
local line=
for line in "$@"; do
set -- ${line}
if [ "$3" = "${IFACE}" ]; then
iface=$1
break
fi
done
[ -z "${iface}" ] && return 0
extra=" from ${iface}"
fi
for port in ${ports}; do
ebegin "Removing port ${port}${extra}"
local IFACE="${port}"
_set_flag -promisc
brctl delif "${iface}" "${port}"
eend $?
done
if ${delete}; then
eoutdent
brctl delbr "${iface}"
eend $?
fi
return 0
}
# vim: set ts=4 :
|
