network

ARM7-S3C4510B 的源代码程序

#! /bin/sh
#
# network 1.10 1995/12/28 19:55:19 (David Hinds)
#
# $Id: network,v 1.1.1.1 2002/04/02 06:54:31 wyliang Exp $
#
# 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.
#
# Changes by Yoichi
# 09/12/96 added DHCP option
# 05/17/97 added check if there is a network device or not
#

usage()
{
    echo "usage: network [action] [device name]"
    echo "  actions: ident start check stop suspend resume"
    exit 1
}

if [ $# -lt 2 ] ; then usage ; fi
action=$1
device=$2

# Load site-specific settings
. /etc/pcmcia/network.opts

case "$action" in

'ident')
    ADDR=`/sbin/ifconfig $device | sed -n -e 's/.*addr \(.*\)/\1/p'`
    echo "Hardware address = $ADDR"
    ;;

'start')
	if ! cat /proc/net/dev | egrep $device >/dev/null ; then
		exit 1
	fi
    if [ "$DHCP" = "y" -o "$DHCP" = "Y" ] ; then
        if [ "$DHCPSTF" ] ; then
            /usr/sbin/dhcpcd -c $DHCPSTF ${device}
        else
            /usr/sbin/dhcpcd ${device}
        fi
    elif [ "$BOOTP" = "y" -o "$BOOTP" = "Y" ] ; then
	/sbin/ifconfig $device up
	/sbin/route add default dev $device
	eval `/sbin/bootpc --bootfile '' --dev $device`
	/sbin/route del default
	if [ "$GATEWAYS" = "" ] ; then
	    set - $GATEWAYS ; GATEWAY=$1
	fi
    fi

    if [ "$IPADDR" != "" ] ; then

	# Basic network setup
	/sbin/ifconfig $device up $IPADDR broadcast $BROADCAST \
            netmask $NETMASK
	/sbin/route add -net $NETWORK netmask $NETMASK
	if [ "$GATEWAY" != "" ] ; then
	    /sbin/route add default gw $GATEWAY metric 1
	fi

	# Configure nameservers
	if [ "$DNSSRVS $DNS_1 $DNS_2 $DNS_3" != "   " ] ; then
	    cp /etc/resolv.conf /etc/resolv.new
	    echo "# $device begin" >> /etc/resolv.new
	    for DNS in $DNSSRVS $DNS_1 $DNS_2 $DNS_3 ; do
		echo "nameserver $DNS" >> /etc/resolv.new
	    done
	    echo "# $device end" >> /etc/resolv.new
	    mv /etc/resolv.new /etc/resolv.conf
	fi
    fi
    ;;

'stop')
    if [ "$DHCP" = "y" -o "$DHCP" = "Y" ] ; then
		`mount | awk '/type nfs/ { print "umount " $3 }'`
        /usr/sbin/dhcpcd -k
    elif [ "$IPADDR" != "" ] ; then
	if [ "$GATEWAY" != "" ] ; then
	    /sbin/route del default
	fi
	/sbin/route del $NETWORK
	/sbin/ifconfig $device down

	# Remove nameservers
	awk "/# $device begin/ { p = 1 }		\
	    { if (!p) print }				\
	    /# $device end/ { p = 0 }"			\
	    < /etc/resolv.conf > /etc/resolv.new &&	\
	    mv /etc/resolv.new /etc/resolv.conf
    fi
    ;;

'check')
    # This is crude -- it checks for any external network activity
    netstat -ntuw | tail +3 | awk '{ print $5 }' | \
	grep -v 127.0.0.1 > /dev/null && exit 1
    ;;

'restart')
    if [ "$IPADDR" != "" ] ; then
	/sbin/ifconfig $device down up
    fi
    ;;

'suspend'|'resume')
    ;;

*)
    usage
    ;;

esac

exit 0