143 lines
3.4 KiB
Bash
143 lines
3.4 KiB
Bash
# Copyright 2007 Roy Marples
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# All rights reserved
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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# SUCH DAMAGE.
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bridge_depend() {
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before interface macnet
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program /sbin/brctl
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}
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_config_vars="$_config_vars bridge bridge_add brctl"
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_is_bridge() {
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brctl show 2>/dev/null | grep -q "^${IFACE}[[:space:]]"
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}
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bridge_pre_start() {
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local ports= brif= iface="${IFACE}" e= x=
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local ports="$(_get_array "bridge_${IFVAR}")"
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local opts="$(_get_array "brctl_${IFVAR}")"
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eval brif=\$bridge_add_${IFVAR}
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[ -z "${ports}" -a -z "${brif}" -a -z "${opts}" ] && return 0
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[ -n "${ports}" ] && bridge_post_stop
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(
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if [ -z "${ports}" -a -n "${brif}" ]; then
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ports="${IFACE}"
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IFACE="${brif}"
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else
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ports="${ports}"
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metric=1000
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fi
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if ! _is_bridge; then
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ebegin "Creating bridge ${IFACE}"
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if ! brctl addbr "${IFACE}"; then
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eend 1
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return 1
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fi
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fi
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local IFS="$__IFS"
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for x in ${opts}; do
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unset IFS
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set -- ${x}
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x=$1
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shift
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set -- "${x}" "${IFACE}" "$@"
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brctl "$@"
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done
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unset IFS
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if [ -n "${ports}" ]; then
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einfo "Adding ports to ${IFACE}"
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eindent
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local OIFACE="${IFACE}"
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for x in ${ports}; do
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ebegin "${x}"
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local IFACE="${x}"
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_set_flag promisc
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_up
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if ! brctl addif "${OIFACE}" "${x}"; then
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_set_flag -promisc
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eend 1
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return 1
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fi
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eend 0
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done
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eoutdent
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fi
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) || return 1
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# Bring up the bridge
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_up
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}
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bridge_post_stop() {
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local port= ports= delete=false extra=
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if _is_bridge; then
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ebegin "Destroying bridge ${IFACE}"
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_down
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ports="$(brctl show 2>/dev/null | \
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sed -n -e '/^'"${IFACE}"'[[:space:]]/,/^\S/ { /^\('"${IFACE}"'[[:space:]]\|\t\)/s/^.*\t//p }')"
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delete=true
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iface=${IFACE}
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eindent
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else
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# Work out if we're added to a bridge for removal or not
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eval set -- $(brctl show 2>/dev/null | sed -e "s/'/'\\\\''/g" -e "s/$/'/g" -e "s/^/'/g")
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local line=
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for line; do
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set -- ${line}
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if [ "$3" = "${IFACE}" ]; then
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iface=$1
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break
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fi
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done
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[ -z "${iface}" ] && return 0
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extra=" from ${iface}"
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fi
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for port in ${ports}; do
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ebegin "Removing port ${port}${extra}"
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local IFACE="${port}"
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_set_flag -promisc
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brctl delif "${iface}" "${port}"
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eend $?
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done
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if ${delete}; then
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eoutdent
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brctl delbr "${iface}"
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eend $?
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fi
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return 0
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}
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# vim: set ts=4 :
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