sysconfig/network-scripts/ifup


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#!/bin/bash
PATH=/sbin:/usr/sbin:/bin:/usr/bin

cd /etc/sysconfig/network-scripts
. network-functions

need_hostname

CONFIG=$1

[ -z "$CONFIG" ] && {
    echo "usage: ifup <device name>" >&2
    exit 1
}

[ -f "$CONFIG" ] || CONFIG=ifcfg-$CONFIG
[ -f "$CONFIG" ] || {
    echo "usage: ifup <device name>" >&2
    exit 1
}

if [ $UID != 0 ]; then
    if [ -x /usr/sbin/usernetctl ]; then
	exec /usr/sbin/usernetctl $CONFIG up
    fi
    echo "Users cannot control this device." >&2
    exit 1
fi

source_config

if [ "foo$2" = "fooboot" -a "${ONBOOT}" = "no" ]
then
    exit
fi

IPSETUP=no

DEVICETYPE=`echo $DEVICE | sed "s/[0-9]*$//"`
REALDEVICE=`echo $DEVICE | sed 's/:.*//g'`
if echo $DEVICE | grep -q ':' ; then
    ISALIAS=yes
else
    ISALIAS=no
fi

# Old BOOTP variable
if [ "$BOOTP" = "yes" ]; then
    BOOTPROTO=bootp
fi

OTHERSCRIPT="/etc/sysconfig/network-scripts/ifup-${DEVICETYPE}"

if [ -x $OTHERSCRIPT ]; then
    exec $OTHERSCRIPT $CONFIG $2
fi

# is this device available? (this catches PCMCIA devices for us)
/sbin/ifconfig ${REALDEVICE} 2>&1 | grep -s "unknown interface" > /dev/null
if [ "$?" = "0" ]; then
    echo "Delaying ${DEVICE} initialization."
    exit 0
fi

if [ "$SLAVE" = yes -a "$ISALIAS" = no -a "$MASTER" != "" -a \
     -x /sbin/ifenslave ]; then
    RFLAG="" ; [ "$RECIEVE-ONLY" = yes ] && RFLAG="-r"

    ifconfig ${DEVICE} down
    echo "Enslaving $DEVICE to $MASTER"
    ifenslave $RFLAG "$DEVICE" "$MASTER"

    exit 0
fi

if [ "$BOOTPROTO" = bootp -a "$ISALIAS" = no ]; then
    ifconfig ${DEVICE} down
# XXX 2.2 kernels complain about broadcast and netmask
    ifconfig ${DEVICE} 0.0.0.0	# broadcast 255.255.255.255 netmask 0.0.0.0
    route add default ${DEVICE}
    echo "Sending bootp request"
    TMPFILE=`/bin/mktemp /tmp/bootp-${DEVICE}.XXXXXX` || {
	ifconfig ${DEVICE} down
	echo 'mktemp failed'
	exit 1
    }
# XXX Give slow 10Mbps/100Mbps autodetecting cards a second chance
    bootpc --returniffail --timeoutwait 6 --dev ${DEVICE} 2>/dev/null > ${TMPFILE}
    if [ "$?" != "0" ]; then
      bootpc --returniffail --timeoutwait 6 --dev ${DEVICE} 2>/dev/null > ${TMPFILE}
    fi

    if [ "$?" = "0" ]; then
	. ${TMPFILE}
	BOOTPHOSTNAME="$HOSTNAME"
	echo "bootp response received -- using IP ${IPADDR}"
    elif [ -z "$IPADDR" ]; then
	ifconfig ${DEVICE} down
	echo "No bootp response recieved -- not configuring device ${DEVICE}."
	rm -f ${TMPFILE}
	exit 1
    else 
	echo "No bootp response recieved -- using default configuration for device ${DEVICE}."
    fi

    rm -f ${TMPFILE}
elif [ "$BOOTPROTO" = dhcp -a "$ISALIAS" = no ]; then
    echo -n "Using DHCP for ${DEVICE}... "
    IFNAME=${DEVICE} \
	/sbin/dhcpcd -c /etc/sysconfig/network-scripts/ifdhcpc-done ${DEVICE} 
    echo "echo \$$ > /var/run/dhcp-wait-${DEVICE}.pid; exec sleep 30" | sh

    if [ -f /var/run/dhcp-wait-${DEVICE}.pid ]; then
	echo "failed."
	exit 1
    else
	rm -f /var/run/dhcp-wait-${DEVICE}.pid
	echo "done."
	IPSETUP=yes
    fi
fi

if [ "$IPSETUP" != yes ]; then
    if [ -z "$NETMASK" ]; then
	eval `/bin/ipcalc --netmask ${IPADDR}`
    fi

    if [ -z "$BROADCAST" ]; then
	eval `/bin/ipcalc --broadcast ${IPADDR} ${NETMASK}`
    fi

    if [ -z "$NETWORK" ]; then
	eval `/bin/ipcalc --network ${IPADDR} ${NETMASK}`
    fi

    ifconfig ${DEVICE} ${MACADDR:+hw ether $MACADDR} ${IPADDR} \
      netmask ${NETMASK} broadcast ${BROADCAST}
    if [ "$ISALIAS" = no ] ; then
	route add -net ${NETWORK} netmask ${NETMASK} ${DEVICE}
    else
	route add -host ${IPADDR} ${DEVICE}
    fi

    # this is broken! it's only here for compatibility with old RH systems
    if [ "${GATEWAY}" != "" -a "${GATEWAY}" != "none" ]; then
	route add default gw ${GATEWAY} metric 1 ${DEVICE}
    fi

    . /etc/sysconfig/network

    if [ "${GATEWAY}" != "" ]; then
	if [ "${GATEWAYDEV}" = "" -o "${GATEWAYDEV}" = "${DEVICE}" ]; then
	    # set up default gateway
	    route add default gw ${GATEWAY} ${DEVICE}
	    DEFGW=${GATEWAY}
	fi
    fi

    if [ "$BOOTPROTO" = bootp -a "$ISALIAS" = no ]; then
	if [ -n "$GATEWAYS" ]; then
	    for gw in $GATEWAYS; do
		if [ $gw != "${DEFGW}" ]; then
		    route add default gw $gw ${DEVICE}
		fi
	    done
	fi

	if [ -n "$DNSSRVS" -a -n "$SEARCH" ]; then
	    echo "search $SEARCH" > /etc/resolv.conf
	    for dns in $DNSSRVS; do
		    echo "nameserver $dns" >> /etc/resolv.conf
	    done
	fi

	if [ -n "$BOOTPHOSTNAME" -a -n "$NEEDHOSTNAME" ]; then
	    set_hostname $BOOTPHOSTNAME
	fi
    fi
fi

if [ "$IPX" = yes ]; then
	/etc/sysconfig/network-scripts/ifup-ipx $DEVICE
fi

exec /etc/sysconfig/network-scripts/ifup-post $CONFIG