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#!/bin/bash
# Network Interface Configuration System
# Copyright (c) 1996-2001 Red Hat, Inc. all rights reserved.
#
# This software may be freely redistributed under the terms of the GNU
# public license.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
. /etc/init.d/functions
cd /etc/sysconfig/network-scripts
. network-functions
[ -f ../network ] && . ../network
[ -f ../networking/network ] && . ../networking/network
CONFIG=${1}
[ -z "${CONFIG}" ] && {
echo $"Usage: ifup <device name>" >&2
exit 1
}
need_config ${CONFIG}
[ -f "${CONFIG}" ] || {
echo $"$0: configuration for ${1} not found." >&2
echo $"Usage: ifup <device name>" >&2
exit 1
}
if [ ${UID} != 0 ]; then
if [ -x /usr/sbin/usernetctl ]; then
if /usr/sbin/usernetctl ${CONFIG} report ; then
exec /usr/sbin/usernetctl ${CONFIG} up
fi
fi
echo $"Users cannot control this device." >&2
exit 1
fi
source_config
if [ "foo$2" = "fooboot" -a "${ONBOOT}" = "no" -o "${ONBOOT}" = "NO" ]
then
exit 0
fi
if [ -n "$IN_HOTPLUG" -a "${HOTPLUG}" = "no" -o "${HOTPLUG}" = "NO" ]
then
exit 0
fi
# figure out more about what we are dealing with
DEVICETYPE=`echo ${DEVICE} | sed "s/[0-9]*$//"`
[ -z "$REALDEVICE" ] && 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
if [ "${BOOTPROTO}" = "bootp" -o "${BOOTPROTO}" = "dhcp" ]; then
DYNCONFIG=true
fi
if [ -x /sbin/ifup-pre-local ]; then
/sbin/ifup-pre-local ${DEVICE}
fi
OTHERSCRIPT="/etc/sysconfig/network-scripts/ifup-${DEVICETYPE}"
if [ -x ${OTHERSCRIPT} ]; then
exec ${OTHERSCRIPT} ${CONFIG} $2
fi
is_available ${REALDEVICE} || {
if [ "$?" = "1" ] ; then
echo $"$alias device does not seem to be present, delaying ${DEVICE} initialization."
exit 1
else
exit 0
fi
}
if [ -n "${HWADDR}" ]; then
FOUNDMACADDR=`LC_ALL= LANG= ip -o link show ${REALDEVICE} | \
sed 's/.*link\/ether \([[:alnum:]:]*\).*/\1/'`
if [ "${FOUNDMACADDR}" != "${HWADDR}" ]; then
/sbin/nameif "${REALDEVICE}" "${HWADDR}" || {
echo $"Device ${DEVICE} has different MAC address than expected, ignoring."
exit 1
}
fi
fi
# is the device wireless? If so, configure wireless device specifics
is_wireless_device ${DEVICE} && . ./ifup-wireless
# slave device?
if [ "${SLAVE}" = yes -a "${ISALIAS}" = no -a "${MASTER}" != "" -a \
-x /sbin/ifenslave ]; then
RFLAG="" ; [ "${RECEIVEONLY}" = yes ] && RFLAG="-r"
/sbin/ip link set ${DEVICE} down
echo $"Enslaving ${DEVICE} to ${MASTER}"
ifenslave ${RFLAG} "${MASTER}" "${DEVICE}"
exit 0
fi
# this isn't the same as the MAC in the configuration filename. It is
# available as a configuration option in the config file, forcing the kernel
# to think an ethernet card has a different MAC address than it really has.
if [ -n "${MACADDR}" ]; then
ip link set ${DEVICE} address ${MACADDR}
fi
if [ -n "${MTU}" ]; then
ip link set ${DEVICE} mtu ${MTU}
fi
# Is there a firewall running, and does it look like one we configured?
FWACTIVE=
if iptables -L -n 2>/dev/null | grep -q RH-Lokkit-0-50-INPUT ; then
FWACTIVE=1
fi
# Remove any temporary references which were previously added to dhclient config
if [ -w /etc/dhclient-${DEVICE}.conf ] && [ -x /sbin/dhclient ] ; then
grep -v "# temporary RHL ifup addition" /etc/dhclient-${DEVICE}.conf > /etc/dhclient-${DEVICE}.conf.ifupnew 2> /dev/null
cat /etc/dhclient-${DEVICE}.conf.ifupnew > /etc/dhclient-${DEVICE}.conf
rm -f /etc/dhclient-${DEVICE}.conf.ifupnew
fi
if [ -n "${DYNCONFIG}" ]; then
PUMPARGS=$PUMPARGS
DHCPCDARGS="$DHCPCDARGS -n"
DHCLIENTARGS="${DHCLIENTARGS} -1 -q -lf /var/lib/dhcp/dhclient-${DEVICE}.leases -pf /var/run/dhclient-${DEVICE}.pid -cf /etc/dhclient-${DEVICE}.conf"
if [ -n "${DHCP_HOSTNAME}" ]; then
# Send a host-name to the DHCP server (requ. by some dhcp servers).
PUMPARGS="${PUMPARGS} -h ${DHCP_HOSTNAME}"
DHCPCDARGS="${DHCPCDARGS} -h ${DHCP_HOSTNAME}"
if [ -x /sbin/dhclient ] ; then
if [ -w /etc/dhclient-${DEVICE}.conf ] ; then
if ! grep "send *host-name *\"${DHCP_HOSTNAME}\"" /etc/dhclient-${DEVICE}.conf > /dev/null 2>&1 ; then
echo "send host-name \"${DHCP_HOSTNAME}\"; # temporary RHL ifup addition" >> /etc/dhclient-${DEVICE}.conf
fi
elif ! [ -e /etc/dhclient-${DEVICE}.conf ] ; then
echo "send host-name \"${DHCP_HOSTNAME}\"; # temporary RHL ifup addition" >> /etc/dhclient-${DEVICE}.conf
fi
fi
fi
if need_hostname; then
# Set hostname of host to host-name option supplied by DHCP.
PUMPARGS="${PUMPARGS} --lookup-hostname"
DHCPCDARGS="${DHCPCDARGS} -H"
fi
if [ "${PEERDNS}" = "no" ]; then
# Do not update/replace resolv.conf.
PUMPARGS="${PUMPARGS} -d"
DHCPCDARGS="${DHCPCDARGS} -R"
fi
echo
echo -n $"Determining IP information for ${DEVICE}..."
if check_link_down ${DEVICE}; then
echo $" failed; no link present. Check cable?"
ip link set ${DEVICE} down >/dev/null 2>&1
exit 1
fi
# DHCP clients need DNS to be available, and we don't know
# what DNS server they're using until they are done.
FWHACK=
if [ -n "$FWACTIVE" -a "$FIREWALL_MODS" != "no" ]; then
iptables -I RH-Lokkit-0-50-INPUT -m udp -s 0/0 --sport 53 -d 0/0 --dport 1025:65535 -p udp -j ACCEPT
FWHACK=1
fi
if [ -x /sbin/dhclient ] && /sbin/dhclient ${DHCLIENTARGS} ${DEVICE} ; then
echo $" done."
elif [ -z "`pidof -x dhclient`" ] && [ -x /sbin/dhcpcd ] && /sbin/dhcpcd ${DHCPCDARGS} ${DEVICE} ; then
echo $" done."
elif [ -z "`pidof -x dhclient`" ] && [ -z "`pidof -x dhcpcd`" ] && [ -x /sbin/pump ] && /sbin/pump ${PUMPARGS} -i ${DEVICE}; then
echo $" done."
else
echo $" failed."
[ -n "$FWHACK" ] && iptables -D RH-Lokkit-0-50-INPUT -m udp -s 0/0 --sport 53 -d 0/0 --dport 1025:65535 -p udp -j ACCEPT
exit 1
fi
[ -n "$FWHACK" ] && iptables -D RH-Lokkit-0-50-INPUT -m udp -s 0/0 --sport 53 -d 0/0 --dport 1025:65535 -p udp -j ACCEPT
# DHCP likes to create duplicate routes. Fix that up.
NUMDEFROUTES=`ip -o route | \
grep "^default" | \
awk '{ nlines++ } END { print nlines }'`
if [ -n "$NUMDEFROUTES" -a "$NUMDEFROUTES" -gt 1 ]; then
# remove the default route for the new device (old route wins)
ip route del default dev ${DEVICE}
fi
# end dynamic device configuration
else
if [ -z "${IPADDR}" ]; then
# enable device without IP, useful for e.g. PPPoE
ip link set ${REALDEVICE} up
if [ "${NETWORKING_IPV6}" = "yes" ]; then
/etc/sysconfig/network-scripts/ifup-ipv6 ${CONFIG}
fi
exec /etc/sysconfig/network-scripts/ifup-post ${CONFIG} ${2}
fi
expand_config
[ -n "${ARP}${PROMISC}${ALLMULTI}" ] && \
ip link set ${REALDEVICE} $(toggle_value arp $ARP) \
$(toggle_value promisc $PROMISC) \
$(toggle_value allmulti $ALLMULTI)
if ! ip link set ${REALDEVICE} up ; then
echo $"Failed to bring up ${DEVICE}."
exit 1
fi
if ! arping -q -c 2 -w 3 -D -I ${REALDEVICE} ${IPADDR} ; then
echo $"Error, some other host already uses address ${IPADDR}."
exit 1
fi
if [ "${DEVICE}" = "lo" ]; then
SCOPE="scope host"
else
SCOPE=
fi
if [ -n "$SRCADDR" ]; then
SRC="src $SRCADDR"
else
SRC=
fi
if ! LC_ALL=C ip addr ls ${REALDEVICE} | grep -q "${IPADDR}/${PREFIX}" ; then
if ! ip addr add ${IPADDR}/${PREFIX} \
brd ${BROADCAST:-+} dev ${REALDEVICE} ${SCOPE} label ${DEVICE}; then
echo $"Error adding address ${IPADDR} for ${DEVICE}."
fi
fi
if [ -n "$SRCADDR" ]; then
sysctl -w "net.ipv4.conf.${REALDEVICE}.arp_filter=1" >/dev/null 2>&1
fi
# update ARP cache of neighboring computers
arping -q -A -c 1 -I ${REALDEVICE} ${IPADDR}
( sleep 2;
arping -q -U -c 1 -I ${REALDEVICE} ${IPADDR} ) > /dev/null 2>&1 < /dev/null &
# Add a route for the subnet. Replace any existing route.
if [ "${ISALIAS}" = no -a "${NETMASK}" != "255.255.255.255" ]; then
ip route replace ${NETWORK}/${PREFIX} ${SRC} dev ${REALDEVICE}
fi
# Set a default route.
if [ -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${REALDEVICE}" ]; then
# set up default gateway. replace if one already exists
if [ -n "${GATEWAY}" -a "`ipcalc --network ${GATEWAY} ${NETMASK} 2>/dev/null`" = "NETWORK=${NETWORK}" ]; then
ip route replace default via ${GATEWAY} ${SRC}
elif [ "${GATEWAYDEV}" = "${DEVICE}" ]; then
ip route replace default ${SRC} dev ${REALDEVICE}
fi
fi
fi
# IPv6 initialisation?
if [ "${NETWORKING_IPV6}" = "yes" ]; then
/etc/sysconfig/network-scripts/ifup-ipv6 ${CONFIG}
fi
if [ "${IPX}" = yes ]; then
/etc/sysconfig/network-scripts/ifup-ipx ${DEVICE}
fi
exec /etc/sysconfig/network-scripts/ifup-post ${CONFIG} ${2}
|