Chip 2007 January, February, March & April/Chip-Cover-CD-2007-02.iso/boot/i386/rescue/etc/sysconfig/network/scripts/ifup-bridge

Text File | 2006-11-29 | 5KB | 185 lines

#!/bin/bash
#
# Copyright (c) 2005 SUSE Linux Products GmbH Nuernberg, Germany.
# All rights reserved.
#
# Author:
#    Stefan Scheler <[e-mail]>
#
# Based on a patch by:
#    Jan Engelhardt <[e-mail]>
#

usage () {
    echo $@
    echo "usage: if{up,down,status}-bridge [<config>] <hwdesc> [-o <options>]"
    echo "  hwdesc may be the interface name or any valid description"
    echo "  of the corresponding device, for details see ifup(8)."
    echo
    echo "Options are:"
    echo "    [on]boot : we are currently booting (or shutting down)"
    echo "    auto     : alias for boot"
    echo "    hotplug  : we are handling a hotplug event"
    echo "    debug    : be verbose"
    exit $R_USAGE
}

######################################################################
# change the working direcory and source some common files
#
R_INTERNAL=1      # internal error, e.g. no config or missing scripts
cd /etc/sysconfig/network || exit $R_INTERNAL
test -f ./config && . ./config
test -f scripts/functions && . scripts/functions || exit $R_INTERNAL
test -f /sbin/getcfg || exit $R_INTERNAL

######################################################################
# check arguments and how we are called (in case of links)
#
SCRIPTNAME=${0##*/}
debug $*
ACTION=${SCRIPTNAME#if}
ACTION=${ACTION%%-bridge}
case "${ACTION}" in
    up|status|down) ;;
    *) usage
esac
INTERFACE=$1
case "$INTERFACE" in ""|-h|*help*) usage; esac
shift
if [ -n "$1" -a "$1" != "-o" ] ; then
    CONFIG=$INTERFACE
    INTERFACE=$1
fi
shift
test "$1" = "-o" && shift
OPTIONS="$@"
MODE=manual
while [ $# -gt 0 ]; do
    case $1 in
        boot|onboot) MODE=auto ;;
        hotplug)     MODE=auto ;;
        auto)        MODE=auto ;;
        quiet)       be_quiet_has_gone ;;
        debug)       DEBUG=yes ;;
        *)           debug unknown option $1 ;;
    esac
    shift
done

######################################################################
# Check needed tools
#
if ! [ -x /sbin/brctl ]; then
    logerror "bride-utils not installed"
    exit $R_INTERNAL
fi

######################################################################
# check presence of configuration file and source it
#
test -f ./ifcfg-$CONFIG && . ./ifcfg-$CONFIG

######################################################################
case $ACTION in
up)

    ######################################################################
    # Bridge setup
    #
    printf "    %-9s " "$INTERFACE"

    # Add bridge
    brctl show | grep -v "bridge id" | grep "^$INTERFACE" &>/dev/null
    case "$?" in
    0)
        logerror "Warning: Bridge $INTERFACE already up!"
        exit $R_ERROR
        ;;
    *)
        MESSAGE=`brctl addbr "$INTERFACE"`
        if [ $? -ne 0 ]; then
            logerror "Error: failed to add bridge $INTERFACE: $MESSAGE"
            exit $R_ERROR
        fi
        ;;
    esac

    # Add ports
    echo -en "Ports:"
    COUNTER=1
    for p in $BRIDGE_PORTS; do
        PORT_INTERFACE=`getcfg-interface $p`
        MESSAGE=`ip link set dev "$PORT_INTERFACE" up && brctl addif "$INTERFACE" "$PORT_INTERFACE"`
        if [ $? -ne 0 ]; then
            logerror " Warning: failed to bring $PORT_INTERFACE up: $MESSAGE"
        else
            # set path costs
            if [ -n "$BRIDGE_PATHCOSTS" ]; then
                COSTS=`echo $BRIDGE_PATHCOSTS | cut -d\  -f $COUNTER`
                brctl setpathcost $INTERFACE $PORT_INTERFACE $COSTS
            fi
            # set port prio
            if [ -n "$BRIDGE_PORTPRIORITIES" ]; then
                PRIO=`echo $BRIDGE_PORTPRIORITIES | cut -d\  -f $COUNTER`
                brctl setportprio $INTERFACE $PORT_INTERFACE $PRIO
            fi
            echo -en " [$p]"
        fi
        COUNTER=$[$COUNTER+1]
    done
    echo -en "\n";

    # Set flags
    [ -n "$BRIDGE_AGEINGTIME" ] && brctl setageing     "$INTERFACE" "$BRIDGE_AGEINGTIME"
    [ -n "$BRIDGE_STP"        ] && brctl stp           "$INTERFACE" "$BRIDGE_STP"
    [ -n "$BRIDGE_PRIORITY"   ] && brctl setbridgeprio "$INTERFACE" "$BRIDGE_PRIORITY"
    [ -n "$BRIDGE_FORWARDDELAY" ] && brctl setfd       "$INTERFACE" "$BRIDGE_FORWARDDELAY"
    [ -n "$BRIDGE_HELLOTIME"  ] && brctl sethello      "$INTERFACE" "$BRIDGE_HELLOTIME"
    [ -n "$BRIDGE_MAXAGE"     ] && brctl setmaxage     "$INTERFACE" "$BRIDGE_MAXAGE"

    RETVAL=$R_SUCCESS
    ;;
down)

    ######################################################################
    # Bridge shutdown
    #
    brctl show | grep -v "bridge id" | grep "^$INTERFACE" &>/dev/null
    if [ $? -eq 0 ]; then
        MESSAGE=`brctl delbr "$INTERFACE"`
        if [ $? -ne 0 ]; then
            logmessage "Error: failed to delete bridge $INTERFACE: $MESSAGE"
            exit $R_STATUS
        fi
        for p in $BRIDGE_PORTS; do
            PORT_INTERFACE=`getcfg-interface $p`
            MESSAGE=`ip link set dev "$PORT_INTERFACE" down`
            if [ $? -ne 0 ]; then
                logmessage "Warning: failed to bring $p down: $MESSAGE"
            fi
        done
    fi
    RETVAL=$R_SUCCESS
    ;;
status)

    ######################################################################
    # Bridge status
    #
    if is_iface_up $INTERFACE ; then
        # do not show status output on boot, this may log
        # the WEP key in the boot log
        if [ "$MODE" != onboot ]; then
            brctl show $INTERFACE
            brctl showstp $INTERFACE
        fi
        RETVAL=$R_SUCCESS
    else
        RETVAL=$R_NOTRUNNING
    fi
    ;;
esac

exit $RETVAL