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# Copyright (c) 2007-2008 Roy Marples <roy@marples.name>
# All rights reserved. Released under the 2-clause BSD license.
bridge_depend()
{
before interface macnet
program /sbin/brctl
}
_config_vars="$_config_vars bridge bridge_add brctl"
_is_bridge()
{
# Ignore header line so as to allow for bridges named 'bridge'
brctl show 2>/dev/null | sed '1,1d' | grep -q "^${IFACE}[[:space:]]"
}
bridge_pre_start()
{
local brif= iface="${IFACE}" e= x=
local ports="$(_get_array "bridge_${IFVAR}")"
local opts="$(_get_array "brctl_${IFVAR}")"
eval brif=\$bridge_add_${IFVAR}
eval x=\${bridge_${IFVAR}-y\}
if [ -z "${brif}" -a -z "${opts}" ]; then
[ -n "${ports}" -o "${x}" != "y" ] || return 0
fi
[ -n "${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 ${IFACE}"
_down
# Ignore header line so as to allow for bridges named 'bridge'
ports="$(brctl show 2>/dev/null | \
sed -n -e '1,1d' -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
# Ignore header line so as to allow for bridges named 'bridge'
eval set -- $(brctl show 2>/dev/null | sed -e '1,1d' -e "s/'/'\\\\''/g" -e "s/$/'/g" -e "s/^/'/g")
local line=
for line; 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
}
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