source: freewrt/package/fwifupdown/files/ifupdown.sh@ 2af55bb

#!/bin/sh
#
# This file is part of the FreeWRT project. FreeWRT is copyrighted
# material, please see the LICENCE file in the top-level directory
# or at http://www.freewrt.org/licence for details.
#
# Christian Fischer <spaetzle@freewrt.org>
# Thorsten Glaser <tg@freewrt.org>
#

config() {
        [ x"$1" = x"1" ]
}

what=${0##*/}
case $what in
ifup)
        ;;
ifdown)
        ;;
*)
        echo "Usage: ifup|ifdown [options]"
        echo "For options see man busybox"
        exit 1
        ;;
esac

. /etc/rc.conf
. /etc/network/mfunctions.sh
redirect="2>&-"

if config $FWIFUPDOWN_DEBUG; then
        set -x
        redirect=
fi

# cleanup ifstate files
rm -rf /tmp/ifupdown/ifstate
mkdir -p /tmp/ifupdown/ifstate

eval IFUPDOWN_ENV= $(grep '^FWIFUPDOWN_' /etc/rc.conf |sed "s/#.*//g") \
    busybox $what $@ $redirect

i=0     # did we print the initialisation message?
j=0     # timeout in seconds
rv=0    # exit status of this script
while sleep 1; do
        if test $j -gt 30; then
                mstate 1
                mprint "bridge initialisation timed out"
                rv=1
                break
        fi
        for x in /tmp/ifupdown/ifstate/bridge/*; do
                # any bridges to check?
                test -e "$x" || break 2         # no -> out of both loops
                # print initialisation message, but once only
                test $i = 1 || mprint -n \
                    "Waiting for bridge initialisation to finish"
                i=1
                # check this bridge for its states
                s=ok
                for state in $(brctl showstp ${x##*/} | \
                    fgrep state | sed "s/^.*state//"); do
                        test x"$state" = x"forwarding" && continue
                        # if only one is not forwarding, wait
                        s=no
                        break
                done
                test $s = ok || break   # not ok? wait one second
                rm -f $x                # this bridge done, check next ones
        done
        j=$(expr $j + 1)
done
test $i = 0 || {
        mstate $rv
        mprint "took $j seconds"
}

# vim:ts=4