PC World 2000 February/PCWorld_2000-02_cd.bin/live/etc/pcmcia/network

Text File | 1999-10-31 | 5.4 KB | 219 lines

#! /bin/bash
#
# network 1.56 1999/10/18 21:12:03 (David Hinds)
#
# Initialize or shutdown a PCMCIA ethernet adapter
#
# This script should be invoked with two arguments.  The first is the
# action to be taken, either "start", "stop", or "restart".  The
# second is the network interface name.
#
# The script passes an extended device address to 'network.opts' in
# the ADDRESS variable, to retrieve device-specific configuration
# options.  The address format is "scheme,socket,instance,hwaddr"
# where "scheme" is the current PCMCIA device configuration scheme,
# "socket" is the socket number, "instance" is used to number multiple
# interfaces in a single socket, and "hwaddr" is the card's hardware
# ethernet address.
#

if [ -r ./shared ] ; then . ./shared ; else . /etc/pcmcia/shared ; fi

# Get device attributes
get_info $DEVICE
HWADDR=`/sbin/ifconfig $DEVICE | sed -n -e 's/.*addr \([^ ]*\) */\1/p'`

# Load site-specific settings
ADDRESS="$SCHEME,$SOCKET,$INSTANCE,$HWADDR"
start_fn () { return; }
stop_fn () { return; }
. $0.opts

RESOLV=/etc/resolv.conf

case "$ACTION" in

'start')

    test "$IF_PORT" && /sbin/ifport $DEVICE $IF_PORT

    if is_true $PUMP ; then
    /sbin/pump -i $DEVICE
    elif is_true $BOOTP ; then
    /sbin/ifconfig $DEVICE up 0.0.0.0
    /sbin/route add default dev $DEVICE
    eval `/sbin/bootpc --bootfile '' --returniffail \
        --timeoutwait 10 --dev $DEVICE`
    /sbin/route del default
    /sbin/ifconfig $DEVICE down
    if [ "$GATEWAYS" ] ; then
        set - $GATEWAYS ; GATEWAY=$1
    fi
    elif is_true $DHCP ; then
    /sbin/ifconfig $DEVICE up 0.0.0.0
    /sbin/route add default dev $DEVICE
    if /sbin/dhcpcd -V 2>&1 | grep -q DHCP ; then
        /sbin/dhcpcd $DEVICE >/dev/null 2>&1 || exit 1
    else
        # Jump through hoops for lame 0.70-era dhcpcd
        L=/var/run/dhcp-lock-$DEVICE
        /bin/echo "#!/bin/sh\nrm $L" > $L ; chmod +x $L
        /sbin/dhcpcd -c $L $DEVICE >/dev/null 2>&1
        for t in 0 1 2 3 4 5 6 7 8 9 ; do
        sleep 2 ; if [ ! -e $L ] ; then break ; fi
        done
        rm -f $L
        if [ -e /etc/dhcpc/resolv.conf ] ; then
        echo "# $DEVICE begin" > $RESOLV.N
        cat /etc/dhcpc/resolv.conf >> $RESOLV.N
        echo "# $DEVICE end" >> $RESOLV.N
        cat $RESOLV >> $RESOLV.N ; mv $RESOLV.N $RESOLV
        fi
    fi
    fi

    if is_true $DHCLIENT ; then
    /sbin/dhclient $DEVICE
    fi

    if [ "$IPADDR" ] ; then

    # Basic network setup
    BC=${BROADCAST:+broadcast $BROADCAST}
    /sbin/ifconfig $DEVICE up $IPADDR netmask $NETMASK $BC

    if [ "$NETWORK" ] ; then
        /sbin/ifuser $DEVICE $NETWORK || \
        /sbin/route add -net $NETWORK netmask $NETMASK dev $DEVICE
    elif [ "$GATEWAY" ] ; then
        /sbin/ifuser $DEVICE $GATEWAY || \
        /sbin/route add $GATEWAY $DEVICE
    fi

    test "$GATEWAY" && /sbin/route add default gw $GATEWAY metric 1

    # Update DNS stuff
    if [ "$DOMAIN$SEARCH$DNSSRVS$DNS_1$DNS_2$DNS_3" ] ; then
        echo "# $DEVICE begin" > $RESOLV.N
        test "$DOMAIN" && echo "domain $DOMAIN" >> $RESOLV.N
        test "$SEARCH" && echo "search $SEARCH" >> $RESOLV.N
        for DNS in ${DNSSRVS:-$DNS_1 $DNS_2 $DNS_3} ; do
        echo "nameserver $DNS" >> $RESOLV.N
        done
        echo "# $DEVICE end" >> $RESOLV.N
        sed -e "/# $DEVICE begin/,/# $DEVICE end/d" $RESOLV >> $RESOLV.N
        mv $RESOLV.N $RESOLV
    fi

    # Handle NFS mounts
    if [ "$MOUNTS" ] ; then
        for MT in $MOUNTS ; do mount -v $MT ; done
    fi

    fi

    if [ "$IPX_NETNUM" ] ; then
    ipx_interface add $DEVICE $IPX_FRAME $IPX_NETNUM
    fi

    if test -x /sbin/ipmasq && istrue "$IPMASQ" ; then
    /sbin/ipmasq
    fi

    start_fn $DEVICE
    ;;

'stop')

    stop_fn $DEVICE

    if is_true $PUMP || is_true $BOOTP || is_true $DHCP || is_true $DHCLIENT || [ "$IPADDR" ] ; then

    # Shut down all NFS mounts on this interface
    nfsstop ()
    {
        local HOST MT
        if read HOST MT ; then
        nfsstop
        if /sbin/ifuser $DEVICE $HOST ; then
            fuser -s -k -m $MT
            umount -v $MT
        fi
        fi
    }
    mount -t nfs | sed -e 's/:.* on \(.*\) type .*/ \1/' | nfsstop

    test "$IPX_NETNUM" && ipx_interface del $DEVICE $IPX_FRAME

    # Remove nameservers
    if fgrep -q "# $DEVICE begin" $RESOLV ; then
        sed -e "/# $DEVICE begin/,/# $DEVICE end/d"    $RESOLV > $RESOLV.N
        mv $RESOLV.N $RESOLV
    fi

    if is_true $PUMP ; then
        pump -r -i $DEVICE
    elif is_true $DHCP ; then
        kill -TERM `cat /var/run/dhcpcd-$DEVICE.pid`
        sleep 2
        /sbin/dhcpcd -V 2>&1 | grep -q DHCP || \
        rm -f /var/run/dhcpcd-$DEVICE.pid
    fi

        if is_true $DHCLIENT ; then
        kill -TERM `cat /var/run/dhclient.pid`
        rm -f /var/run/dhcpcd-$DEVICE.pid
        fi
    fi

    /sbin/ifconfig $DEVICE down
    ;;

'check')
    /sbin/ifconfig $DEVICE | grep -q RUNNING || exit 0

    # Check for any in-use NFS mounts
    nfscheck ()
    {
    while read HOST MT ; do
        /sbin/ifuser $DEVICE $HOST && fuser -sm $MT && exit 1
    done
    }
    mount -t nfs | sed -e 's/:.* on \(.*\) type .*/ \1/' | nfscheck

    # Check for active TCP or UDP connections
    getdests ()
    {
        IFS=" :" ; read A ; read A
    while read A B C D E HOST PORT STATE ; do
        if [ "$STATE" != "FIN_WAIT1" -a "$STATE" != "FIN_WAIT2" \
        -a "$STATE" != "CLOSE_WAIT" -a "$STATE" != "TIME_WAIT" \
        -a "$HOST" != "127.0.0.1" -a "$HOST" != "0.0.0.0" \
        -a "$PORT" != "*" ] ; then
        echo $HOST
        fi
    done
    }
    DESTS=`netstat -ntuw | getdests`
    /sbin/ifuser $DEVICE $DESTS && exit 1
    ;;

'cksum')
    chk_simple "$3,$SOCKET,$INSTANCE,$HWADDR" || exit 1
    ;;

'restart')
    test "$IPADDR" && /sbin/ifconfig $DEVICE down up
    ;;

'suspend'|'resume')
    ;;

*)
    usage
    ;;

esac

exit 0