#!/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 " >&2 exit 1 } need_config ${CONFIG} [ -f "${CONFIG}" ] || { echo $"$0: configuration for ${1} not found." >&2 echo $"Usage: ifup " >&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 ${MTU} fi # Is there a firewall running, and does it look like one we configured? FWACTIVE= if iptables -L -n 2>/dev/null | grep -q RH-Lokkit-0-50-INPUT ; then FWACTIVE=1 else modprobe -r iptable_filter >/dev/null 2>&1 fi # Remove any temporary references which were previously added to dhclient config if [ -w /etc/dhclient-${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}" ] && \ ip link set ${REALDEVICE} $(toggle_value arp $ARP) 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=${SCOPE:-} fi if [ -n "$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 ${REALDEVICE} fi fi fi # Add Zeroconf route. if [ -z "${NOZEROCONF}" -a "${ISALIAS}" = "no" ]; then ip route replace 169.254.0.0/16 dev eth0 fi # IPv6 initialisation? if [ "${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}