openrc/net.Linux/bridge.sh
Roy Marples 5af58b4514 Rewrite the core parts in C. We now provide librc so other programs can
query runlevels, services and state without using bash. We also provide
libeinfo so other programs can easily use our informational functions.

As such, we have dropped the requirement of using bash as the init script
shell. We now use /bin/sh and have strived to make the scripts as portable
as possible. Shells that work are bash and dash. busybox works provided
you disable s-s-d. If you have WIPE_TMP set to yes in conf.d/bootmisc you
should disable find too.
zsh and ksh do not work at this time.

Networking support is currently being re-vamped also as it was heavily bash
array based. As such, a new config format is available like so
config_eth0="1.2.3.4/24 5.6.7.8/16"
or like so
config_eth0="'1.2.3.4 netmask 255.255.255.0' '5.6.7.8 netmask 255.255.0.0'"

We will still support the old bash array format provided that /bin/sh IS
a link it bash.

ChangeLog for baselayout-1 can be found in our SVN repo.
2007-04-05 11:18:42 +00:00

114 lines
2.2 KiB
Bash

# Copyright 2004-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
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= opts= iface="${IFACE}" e= x=
eval $(_get_array "bridge_${IFVAR}")
ports="$@"
eval brif=\$bridge_add_${IFVAR}
eval $(_get_array "brctl_${IFVAR}")
opts="$@"
[ -z "${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
eval set -- ${opts}
for x in "$@" ; do
case " ${x} " in
*" ${IFACE} "*) ;;
*) x="${x} ${IFACE}" ;;
esac
brctl ${x}
done
fi
if [ -n "${ports}" ] ; then
einfo "Adding ports to ${IFACE}"
eindent
eval set -- ${ports}
for x in "$@" ; do
ebegin "${x}"
if ! ifconfig "${x}" promisc up && brctl addif "${IFACE}" "${x}" ; then
ifconfig "${x}" -promisc 2>/dev/null
eend 1
return 1
fi
eend 0
done
eoutdent
fi
)
}
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}"
ifconfig "${port}" -promisc
brctl delif "${iface}" "${port}"
eend $?
done
if ${delete} ; then
eoutdent
brctl delbr "${iface}"
eend $?
fi
return 0
}
# vim: set ts=4 :