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-#!/bin/bash
-# /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 ] && [ -x /usr/bin/logger ]; then
- LOGGER=/usr/bin/logger
-else # output to stdout/stderr:
- LOGGER=/bin/cat
-fi
-
-# Handy wrapper for verbose logging
-debug_log() {
- if [ "$DEBUG_ETH_UP" = "yes" ]; then
- echo "/etc/rc.d/rc.inet1: $*" | $LOGGER
- fi
-}
-
-############################
-# DETERMINE INTERFACE LIST #
-############################
-
-# Compose a list of interfaces from /etc/rc.d/rc.inet1.conf (with a maximum
-# of 6 interfaces, but you can easily enlarge the interface limit
-# - send me a picture of such a box :-).
-# If a value for IFNAME[n] is not set, we assume it is an eth'n' interface.
-# This way, the new script is compatible with older rc.inet1.conf files.
-# The IFNAME array will be used to determine which interfaces to bring up/down.
-MAXNICS=${MAXNICS:-6}
-i=0
-while [ $i -lt $MAXNICS ];
-do
- IFNAME[$i]=${IFNAME[$i]:=eth${i}}
- i=$(($i+1))
-done
-debug_log "List of interfaces: '${IFNAME[*]}'"
-
-######################
-# LOOPBACK FUNCTIONS #
-######################
-
-# Function to bring up the loopback interface. If loopback is
-# already up, do nothing.
-lo_up() {
- if [ -e /sys/class/net/lo ]; then
- if ! /sbin/ip link show dev lo | grep -wq -e "state UP" -e "state UNKNOWN" ; then
- echo "/etc/rc.d/rc.inet1: /sbin/ip address add 127.0.0.1/8 dev lo" | $LOGGER
- /sbin/ip address add 127.0.0.1/8 dev lo
- /sbin/ip link set dev lo up
- echo "/etc/rc.d/rc.inet1: /sbin/ip route add 127.0.0.0/8 dev lo" | $LOGGER
- /sbin/ip route add 127.0.0.0/8 dev lo
- fi
- fi
-}
-
-# Function to take down the loopback interface:
-lo_down() {
- if [ -e /sys/class/net/lo ]; then
- echo "/etc/rc.d/rc.inet1: /sbin/ip link set dev lo down" | $LOGGER
- /sbin/ip link set dev lo down
- fi
-}
-
-#######################
-# INTERFACE FUNCTIONS #
-#######################
-
-# Function to create virtual interfaces
-virtif_create() {
- # argument is 'i' - the position of this interface in the VIRTIFNAME array.
- # this loop goes from i=0 to i=number_of_configured_virtual_interfaces_minus_one
- # which means it doesn't do anything if there are none.
- for i in $(seq 0 $((${#VIRTIFNAME[@]} - 1))); do
- /sbin/ip tuntap add dev ${VIRTIFNAME[$i]} mode ${VIRTIFTYPE[$i]} user ${VIRTIFUSER[$i]} group ${VIRTIFGROUP[$i]}
- done
-}
-
-# Function to destory virtual interfaces
-virtif_destroy() {
- # argument is 'i' - the position of this interface in the VIRTIFNAME array.
- for i in $(seq 0 $((${#VIRTIFNAME[@]} - 1))); do
- /sbin/ip tuntap del dev ${VIRTIFNAME[$i]} mode ${VIRTIFTYPE[$i]}
- done
-}
-
-# Function to assemble a bridge interface.
-br_open() {
- # argument is 'i' - the position of this interface in the IFNAME array.
- /sbin/ip link add name ${IFNAME[$1]} type bridge
- for BRIF in ${BRNICS[$1]}; do
- /sbin/ip link set dev $BRIF down
- /sbin/ip address add 0.0.0.0 dev $BRIF
- /sbin/ip link set dev $BRIF master ${IFNAME[$1]}
- /sbin/ip link set dev $BRIF up
- done
- /sbin/ip link set dev ${IFNAME[$1]} up
-}
-
-# Function to disassemble a bridge interface.
-br_close() {
- /sbin/ip link set dev ${IFNAME[$1]} down
- # argument is 'i' - the position of this interface in the IFNAME array.
- #for BRIF in ${BRNICS[$1]}; do
- for BRIF in $(ls --indicator-style=none /sys/class/net/${IFNAME[$1]}/brif/)
- do
- /sbin/ip link set dev $BRIF nomaster
- done
- /sbin/ip link set dev ${IFNAME[$1]} down
- /sbin/ip link del ${IFNAME[$1]}
-}
-
-# 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 "i" is greater or equal to "MAXNICS" at this point, it means we didn't
- # find an entry in IFNAME array corresponding to "$1", which likely means
- # there are more interfaces configured than MAXNICS. Let's err on the
- # side of caution and do nothing instead of possibly doing the wrong thing.
- if [ $i -ge $MAXNICS ]; then
- echo "/etc/rc.d/rc.inet1: skipping ${1}, you might need to increase MAXNICS" | $LOGGER
- return
- fi
- # If the interface is a bridge, then create it first:
- [ -n "${BRNICS[$i]}" ] && br_open $i
- # If the interface isn't in the kernel yet (but there's an alias for it in
- # modules.conf), then it should be loaded first:
- if [ -z "${IPADDR[$i]}" ] && [ "${USE_DHCP[$i]}" != "yes" ]; then # skip unconfigured interfaces
- debug_log "skipping ${1} early, interface is not configured in /etc/rc.d/rc.inet1.conf"
- return 0
- fi
- if [ ! -e /sys/class/net/${1%%:*} ]; then # no interface yet
- if /sbin/modprobe -c | grep -v "^#" | grep -w "alias ${1}" | grep -vw "alias ${1} off" > /dev/null ; then
- echo "/etc/rc.d/rc.inet1: /sbin/modprobe ${1}" | $LOGGER
- /sbin/modprobe ${1}
- fi
- fi
- if [ -e /sys/class/net/${1%%:*} ]; then # interface exists
- if ! /sbin/ip address show dev ${1} 2>/dev/null | grep -wq inet || \
- ! /sbin/ip link show dev ${1} | grep -wq "state UP" ; then # interface not up or not configured
- if [ -n "${HWADDR[$i]}" ]; then # Set hardware address _before_ the interface goes up:
- echo "/etc/rc.d/rc.inet1: /sbin/ip link set dev ${1} address ${HWADDR[$i]}" | $LOGGER
- /sbin/ip link set dev ${1} address ${HWADDR[$i]}
- fi
- if [ -n "${MTU[$i]}" ]; then # Set MTU to something else than 1500
- echo "/etc/rc.d/rc.inet1: /sbin/ip link set dev ${1} mtu ${MTU[$i]}" | $LOGGER
- /sbin/ip link set dev ${1} mtu ${MTU[$i]}
- fi
- if /sbin/ip link show dev ${1} | grep -wq "state DOWN" ; then
- /sbin/ip link set dev ${1} up # Bring up interface
- fi
- if [ -x /etc/rc.d/rc.wireless ]; then
- . /etc/rc.d/rc.wireless ${1} start # Initialize any wireless parameters
- fi
- if [ "${USE_DHCP[$i]}" = "yes" ]; then # use DHCP to bring interface up
- # Clear DHCP_OPTIONS before adding new options to it:
- unset DHCP_OPTIONS
- # Set DHCP_OPTIONS for this interface:
- [ -n "${DHCP_HOSTNAME[$i]}" ] && DHCP_OPTIONS="-h ${DHCP_HOSTNAME[$i]}"
- [ "${DHCP_KEEPRESOLV[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -C resolv.conf"
- [ "${DHCP_KEEPNTP[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -C ntp.conf"
- [ "${DHCP_KEEPGW[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -G"
- [ "${DHCP_DEBUG[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -d"
- [ "${DHCP_NOIPV4LL[$i]}" = "yes" ] && DHCP_OPTIONS="$DHCP_OPTIONS -L"
- [ -n "${DHCP_IPADDR[$i]}" ] && DHCP_OPTIONS="$DHCP_OPTIONS -r ${DHCP_IPADDR[$i]}"
- echo "Polling for DHCP server on interface ${1}:"
- # If you set a timeout, you get one, even if the kernel doesn't think that
- # your device is connected, in case /sys isn't right (which it usually isn't
- # except right after the device is loaded, when it usually is):
- #### (start commented out)
- # This is deactivated for now since the kernel has been returning incorrect
- # results concerning whether the interface carrier is detected.
- #if [ -z "${DHCP_TIMEOUT[$i]}" ]; then
- # /sbin/ip link set dev ${1} up && sleep 1
- # CONNSTATUS="$(cat /sys/class/net/${1}/carrier 2> /dev/null)"
- # /sbin/ip link set dev ${1} down
- # if [ "$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 ${1}. Reducing DHCP timeout to 15 seconds."
- # DHCP_TIMEOUT[$i]=15
- # fi
- #fi
- #### (end commented out)
- # 15 seconds should be a reasonable default DHCP timeout. 30 was too much.
- echo "/etc/rc.d/rc.inet1: /sbin/dhcpcd -L -t ${DHCP_TIMEOUT[$i]:-15} ${DHCP_OPTIONS} ${1}" | $LOGGER
- /sbin/dhcpcd -L -t ${DHCP_TIMEOUT[$i]:-15} ${DHCP_OPTIONS} ${1}
- if [ "$?" == "0" ]; then # the dhcp call has succeeded
- if [ -n "${IPALIASES[$i]}" ]; then
- # Add extra IP addresses, if defined, to interface
- num=0
- for ipalias in ${IPALIASES[$i]}; do
- ip="${ipalias%/*}"
- nm="${ipalias#*/}"
- [ -z "$nm" ] || [ "$ip" == "$nm" ] && nm="32"
- /sbin/ip address add ${ip}/${nm} dev ${1} label ${1}:${num}
- num=$(($num + 1))
- done
- fi
- if [ "${PROMISCUOUS[$i]}" = "yes" ]; then
- # Set promiscuous mode on the interface
- /sbin/ip link set dev ${1} promisc on
- fi
- fi
- else # bring up interface using a static IP address
- if [ -n "${IPADDR[$i]}" ]; then # skip unconfigured interfaces
- # Set up the network card:
- echo "/etc/rc.d/rc.inet1: /sbin/ip address add ${IPADDR[$i]}/${NETMASK[$i]} broadcast + dev ${1}" | $LOGGER
- /sbin/ip address add ${IPADDR[$i]}/${NETMASK[$i]} broadcast + dev ${1}
- if /sbin/ip link show dev ${1} | grep -wq "state DOWN" ; then
- /sbin/ip link set dev ${1} up # Bring up interface
- fi
- # Add extra IP addresses, if defined, to interface
- if [ -n "${IPALIASES[$i]}" ]; then
- num=0
- for ipalias in ${IPALIASES[$i]}; do
- ip="${ipalias%/*}"
- nm="${ipalias#*/}"
- [ -z "$nm" ] || [ "$ip" == "$nm" ] && nm="32"
- /sbin/ip address add ${ip}/${nm} dev ${1} label ${1}:${num}
- num=$(($num + 1))
- done
- fi
- if [ "${PROMISCUOUS[$i]}" = "yes" ]; then
- # Set promiscuous mode on the interface
- /sbin/ip link set dev ${1} promisc on
- fi
- else
- debug_log "${1} interface is not configured in /etc/rc.d/rc.inet1.conf"
- fi
- fi
- else
- debug_log "${1} is already up, skipping"
- fi
- else
- debug_log "${1} interface does not exist (yet)"
- 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 [ $i -ge $MAXNICS ]; then
- echo "/etc/rc.d/rc.inet1: skipping ${1}, you might need to increase MAXNICS" | $LOGGER
- return
- fi
- if [ -e /sys/class/net/${1%%:*} ]; 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/ip link set dev ${1} down
- sleep 1
- else
- echo "/etc/rc.d/rc.inet1: /sbin/ip link set dev ${1} down" | $LOGGER
- /sbin/ip link set dev ${1} down
- fi
- if [ -x /etc/rc.d/rc.wireless ]; then
- . /etc/rc.d/rc.wireless ${1} stop # Kill wireless daemons if any.
- fi
- # If the interface is a bridge, then destroy it now:
- if [ -n "${BRNICS[$i]}" ]; then
- br_close $i
- fi
- # Flush the address from the interface:
- ip address flush dev ${1}
- fi
-}
-
-#####################
-# GATEWAY FUNCTIONS #
-#####################
-
-# Function to bring up the gateway if there is not yet a default route:
-gateway_up() {
- if ! /sbin/ip route show | grep -wq default ; then
- if [ -n "$GATEWAY" ]; then
- echo "/etc/rc.d/rc.inet1: /sbin/ip route add default via ${GATEWAY}" | $LOGGER
- /sbin/ip route add default via ${GATEWAY} | $LOGGER
- fi
- fi
-}
-
-# Function to take down an existing default gateway:
-gateway_down() {
- if /sbin/ip route show | grep -wq default ; then
- echo "/etc/rc.d/rc.inet1: /sbin/ip route del default" | $LOGGER
- /sbin/ip route del default
- fi
-}
-
-# Function to start the network:
-start() {
- lo_up
- virtif_create
- for i in "${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
- virtif_destroy
- lo_down
-}
-
-
-############
-### MAIN ###
-############
-
-case "$1" in
-start|up) # "start" (or "up") brings up all configured interfaces:
- start
- ;;
-stop|down) # "stop" (or "down") takes down all configured interfaces:
- stop
- ;;
-restart) # "restart" restarts the network:
- stop
- start
- ;;
-lo_start|lo_up) # Start the loopback interface:
- lo_up
- ;;
-lo_stop|lo_down) # Stop the loopback interface:
- lo_down
- ;;
-*_start|*_up) # Example: "eth1_start" (or "eth1_up") will start the specified interface 'eth1'
- INTERFACE=$(echo $1 | /bin/cut -d '_' -f 1)
- if_up $INTERFACE
- gateway_up
- ;;
-*_stop|*_down) # Example: "eth0_stop" (or "eth0_down") will stop the specified interface 'eth0'
- INTERFACE=$(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
- ;;
-*) # The default is to bring up all configured interfaces:
- start
-esac
-
-# End of /etc/rc.d/rc.inet1
generated by cgit v1.2.3 (git 2.26.2) at 2024-04-27 17:12:48 +0000