#! /bin/sh # /etc/rc.d/rc.inet1 # This script is used to bring up the various network interfaces. # # @(#)/etc/rc.d/rc.inet1 10.2 Sun Jul 24 12:45:56 PDT 2005 (pjv) ############################ # READ NETWORK CONFIG FILE # ############################ # Get the configuration information from /etc/rc.d/rc.inet1.conf: . /etc/rc.d/rc.inet1.conf ########### # LOGGING # ########### # If possible, log events in /var/log/messages: if [ -f /var/run/syslogd.pid -a -x /usr/bin/logger ]; then LOGGER=/usr/bin/logger else # output to stdout/stderr: LOGGER=/bin/cat fi ############################ # DETERMINE INTERFACE LIST # ############################ # Compose a list of interfaces from /etc/rc.d/rc.inet1.conf (with a maximum # of 6 interfaces, but you can easily enlarge the interface limit # - send me a picture of such a box :-). # If a value for IFNAME[n] is not set, we assume it is an eth'n' interface. # This way, the new script is compatible with older rc.inet1.conf files. # The IFNAME array will be used to determine which interfaces to bring up/down. MAXNICS=6 i=0 while [ $i -lt $MAXNICS ]; do IFNAME[$i]=${IFNAME[$i]:=eth${i}} i=$(($i+1)) done if [ "$DEBUG_ETH_UP" = "yes" ]; then echo "/etc/rc.d/rc.inet1: List of interfaces: '${IFNAME[@]}'" | $LOGGER fi ###################### # LOOPBACK FUNCTIONS # ###################### # Function to bring up the loopback interface. If loopback is # already up, do nothing. lo_up() { if grep lo: /proc/net/dev 1> /dev/null ; then if ! /sbin/ifconfig | grep "^lo" 1> /dev/null ; then echo "/etc/rc.d/rc.inet1: /sbin/ifconfig lo 127.0.0.1" | $LOGGER /sbin/ifconfig lo 127.0.0.1 echo "/etc/rc.d/rc.inet1: /sbin/route add -net 127.0.0.0 netmask 255.0.0.0 lo" | $LOGGER /sbin/route add -net 127.0.0.0 netmask 255.0.0.0 lo fi fi } # Function to take down the loopback interface: lo_down() { if grep lo: /proc/net/dev 1> /dev/null ; then echo "/etc/rc.d/rc.inet1: /sbin/ifconfig lo down" | $LOGGER /sbin/ifconfig lo down fi } ####################### # INTERFACE FUNCTIONS # ####################### # Function to bring up a network interface. If the interface is # already up or does not yet exist (perhaps because the kernel driver # is not loaded yet), do nothing. if_up() { # Determine position 'i' of this interface in the IFNAME array: i=0 while [ $i -lt $MAXNICS ]; do [ "${IFNAME[$i]}" = "${1}" ] && break i=$(($i+1)) done # If the interface isn't in the kernel yet (but there's an alias for it in # modules.conf), then it should be loaded first: if ! grep `echo ${1}: | cut -f 1 -d :`: /proc/net/dev 1> /dev/null ; then # no interface yet if /sbin/modprobe -c | grep -w "alias ${1}" | grep -vw "alias ${1} off" > /dev/null ; then echo "/etc/rc.d/rc.inet1: /sbin/modprobe ${1}" | $LOGGER /sbin/modprobe ${1} fi fi if grep `echo ${1}: | cut -f 1 -d :`: /proc/net/dev 1> /dev/null ; then # interface exists if ! /sbin/ifconfig | grep -w "${1}" 1>/dev/null || \ ! /sbin/ifconfig ${1} | grep "inet addr" 1> /dev/null ; then # interface not up or not configured if [ ! "${HWADDR[$i]}" = "" ]; then # Set hardware address _before_ the interface goes up: echo "/etc/rc.d/rc.inet1: /sbin/ifconfig ${1} hw ether ${HWADDR[$i]}" | $LOGGER /sbin/ifconfig ${1} hw ether ${HWADDR[$i]} fi if [ ! "${MTU[$i]}" = "" ]; then # Set MTU to something else than 1500 echo "/etc/rc.d/rc.inet1: /sbin/ifconfig ${1} mtu ${MTU[$i]}" | $LOGGER /sbin/ifconfig ${1} mtu ${MTU[$i]} fi if [ -x /etc/rc.d/rc.wireless ]; then . /etc/rc.d/rc.wireless ${1} start # Initialize any wireless parameters fi if [ "${USE_DHCP[$i]}" = "yes" ]; then # use DHCP to bring interface up [ ${DHCP_HOSTNAME[$i]} ] && DHCP_OPTIONS="-h ${DHCP_HOSTNAME[$i]}" [ "${DHCP_KEEPRESOLV[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -R" [ "${DHCP_KEEPNTP[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -N" [ "${DHCP_KEEPGW[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -G" [ ${DHCP_IPADDR[$i]} ] && DHCP_OPTIONS="$DHCP_OPTIONS -s ${DHCP_IPADDR[$i]}" echo "Polling for DHCP server on interface ${1}:" # If you set a timeout, you get one, even if the kernel doesn't think that # your device is connected, in case /sys isn't right (which it usually isn't # except right after the device is loaded, when it usually is): if [ "${DHCP_TIMEOUT[$i]}" = "" ]; then ifconfig ${1} up && sleep 1 CONNSTATUS="$(cat /sys/class/net/${1}/carrier 2> /dev/null)" ifconfig ${1} down if [ "$CONNSTATUS" = "0" ]; then # The kernel has just told us the cable isn't even plugged in, but we will # give any DHCP server a short chance to reply anyway: echo "No carrier detected on ${1}. Reducing DHCP timeout to 10 seconds." DHCP_TIMEOUT[$i]=10 fi fi # 30 seconds should be a reasonable default DHCP timeout. 60 was too much. :-) echo "/etc/rc.d/rc.inet1: /sbin/dhcpcd -d -t ${DHCP_TIMEOUT[$i]:-30} ${DHCP_OPTIONS} ${1}" | $LOGGER /sbin/dhcpcd -d -t ${DHCP_TIMEOUT[$i]:-30} ${DHCP_OPTIONS} ${1} else # bring up interface using a static IP address if [ ! "${IPADDR[$i]}" = "" ]; then # skip unconfigured interfaces # Determine broadcast address from the IP address and netmask: BROADCAST[$i]=`/bin/ipmask ${NETMASK[$i]} ${IPADDR[$i]}|cut -f1 -d' '` # Set up the network card: echo "/etc/rc.d/rc.inet1: /sbin/ifconfig ${1} ${IPADDR[$i]} broadcast ${BROADCAST[$i]} netmask ${NETMASK[$i]}" | $LOGGER /sbin/ifconfig ${1} ${IPADDR[$i]} broadcast ${BROADCAST[$i]} netmask ${NETMASK[$i]} else if [ "$DEBUG_ETH_UP" = "yes" ]; then echo "/etc/rc.d/rc.inet1: ${1} interface is not configured in /etc/rc.d/rc.inet1.conf" | $LOGGER fi fi fi else if [ "$DEBUG_ETH_UP" = "yes" ]; then echo "/etc/rc.d/rc.inet1: ${1} is already up, skipping" | $LOGGER fi fi else if [ "$DEBUG_ETH_UP" = "yes" ]; then echo "/etc/rc.d/rc.inet1: ${1} interface does not exist (yet)" | $LOGGER fi fi } # Function to take down a network interface: if_down() { # Determine position 'i' of this interface in the IFNAME array: i=0 while [ $i -lt $MAXNICS ]; do [ "${IFNAME[$i]}" = "${1}" ] && break i=$(($i+1)) done if grep `echo ${1}: | cut -f 1 -d :`: /proc/net/dev 1> /dev/null ; then if [ "${USE_DHCP[$i]}" = "yes" ]; then echo "/etc/rc.d/rc.inet1: /sbin/dhcpcd -k -d ${1}" | $LOGGER /sbin/dhcpcd -k -d ${1} 2> /dev/null || /sbin/ifconfig ${1} down sleep 1 else echo "/etc/rc.d/rc.inet1: /sbin/ifconfig ${1} down" | $LOGGER /sbin/ifconfig ${1} down fi if [ -x /etc/rc.d/rc.wireless ]; then . /etc/rc.d/rc.wireless ${1} stop # Kill wireless daemons if any. fi fi } ##################### # GATEWAY FUNCTIONS # ##################### # Function to bring up the gateway if there is not yet a default route: gateway_up() { if ! /sbin/route -n | grep "^0.0.0.0" 1> /dev/null ; then if [ ! "$GATEWAY" = "" ]; then echo "/etc/rc.d/rc.inet1: /sbin/route add default gw ${GATEWAY} metric 1" | $LOGGER /sbin/route add default gw ${GATEWAY} metric 1 2>&1 | $LOGGER fi fi } # Function to take down an existing default gateway: gateway_down() { if /sbin/route -n | grep "^0.0.0.0" 1> /dev/null ; then echo "/etc/rc.d/rc.inet1: /sbin/route del default" | $LOGGER /sbin/route del default fi } # Function to start the network: start() { lo_up for i in ${IFNAME[@]} ; do if_up $i done gateway_up } # Function to stop the network: stop() { gateway_down for i in ${IFNAME[@]} ; do if_down $i done lo_down } ############ ### MAIN ### ############ case "$1" in 'start') # "start" brings up all configured interfaces: start ;; 'stop') # "stop" takes down all configured interfaces: stop ;; 'restart') # "restart" restarts the network: stop start ;; *_start) # Example: "eth1_start" will start the specified interface 'eth1' INTERFACE=`echo $1 | /bin/cut -d '_' -f 1` if_up $INTERFACE gateway_up ;; *_stop) # Example: "eth0_stop" will stop the specified interface 'eth0' INTERFACE=`echo $1 | /bin/cut -d '_' -f 1` if_down $INTERFACE ;; *_restart) # Example: "wlan0_restart" will take 'wlan0' down and up again INTERFACE=`echo $1 | /bin/cut -d '_' -f 1` if_down $INTERFACE sleep 1 if_up $INTERFACE gateway_up ;; 'up') # "up" does the same thing as "start" start ;; 'down') # "down" does the same thing as "stop" stop ;; *_up) # "*_up" does the same thing as "*_start" INTERFACE=`echo $1 | /bin/cut -d '_' -f 1` if_up $INTERFACE gateway_up ;; *_down) # "*_down" does the same thing as "*_stop" INTERFACE=`echo $1 | /bin/cut -d '_' -f 1` if_down $INTERFACE ;; *) # The default is to bring up all configured interfaces: lo_up for i in ${IFNAME[@]} ; do if_up $i done gateway_up esac # End of /etc/rc.d/rc.inet1