diff options
author | Robby Workman <rworkman@slackware.com> | 2017-01-06 15:27:27 -0600 |
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committer | Robby Workman <rworkman@slackware.com> | 2017-01-06 15:27:27 -0600 |
commit | 2b563b7a34b1d00d7162983ff13c12867cc62c2e (patch) | |
tree | a4af435e0c64b2bf9f2838f3363cf0bf21cda4e2 /rc.inet1 | |
download | slacknetsetup-2b563b7a34b1d00d7162983ff13c12867cc62c2e.tar.xz |
Initial commit of rc.inet1* and rc.wireless*
If other files are needed, they can be added later
Diffstat (limited to 'rc.inet1')
-rw-r--r-- | rc.inet1 | 326 |
1 files changed, 326 insertions, 0 deletions
diff --git a/rc.inet1 b/rc.inet1 new file mode 100644 index 0000000..19b89d5 --- /dev/null +++ b/rc.inet1 @@ -0,0 +1,326 @@ +#! /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=${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 assemble a bridge interface. +br_open() { + # argument is 'i' - the position of this interface in the IFNAME array. + /sbin/brctl addbr ${IFNAME[$1]} + for BRIF in $(echo ${BRNICS[$1]}); do + /sbin/ifconfig $BRIF down + /sbin/ifconfig $BRIF 0.0.0.0 promisc up + /sbin/brctl addif ${IFNAME[$1]} $BRIF + done +} + +# Function to disassemble a bridge interface. +br_close() { + # argument is 'i' - the position of this interface in the IFNAME array. + #for BRIF in $(echo ${BRNICS[$1]}); do + for BRIF in $(ls --indicator-style=none /sys/class/net/${IFNAME[$1]}/brif/) + do + /sbin/brctl delif ${IFNAME[$1]} $BRIF + done + /sbin/ifconfig ${IFNAME[$1]} down + /sbin/brctl delbr ${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 the interface is a bridge, then create it first: + [ -n "${BRNICS[$i]}" ] && br_open $i + # If the interface isn't in the kernel yet (but there's an alias for it in + # modules.conf), then it should be loaded first: + if [ "${IPADDR[$i]}" = "" -a "${USE_DHCP[$i]}" != "yes" ]; then # skip unconfigured interfaces + if [ "$DEBUG_ETH_UP" = "yes" ]; then + echo "/etc/rc.d/rc.inet1: skipping ${1} early, interface is not configured in /etc/rc.d/rc.inet1.conf" | $LOGGER + fi + continue + fi + if ! grep `echo ${1}: | cut -f 1 -d :`: /proc/net/dev 1> /dev/null ; 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 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 ${1} | grep -w inet 1> /dev/null ; then # interface not up or not configured + if [ ! "${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 + # Clear DHCP_OPTIONS before adding new options to it: + unset DHCP_OPTIONS + # Set DHCP_OPTIONS for this interface: + [ ${DHCP_HOSTNAME[$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" + [ ${DHCP_IPADDR[$i]} ] && DHCP_OPTIONS="$DHCP_OPTIONS -r ${DHCP_IPADDR[$i]}" + echo "Polling for DHCP server on interface ${1}:" + # If you set a timeout, you get one, even if the kernel doesn't think that + # your device is connected, in case /sys isn't right (which it usually isn't + # except right after the device is loaded, when it usually is): + #### (start commented out) + # This is deactivated for now since the kernel has been returning incorrect + # results concerning whether the interface carrier is detected. + #if [ "${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 + #### (end commented out) + # 10 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]:-10} ${DHCP_OPTIONS} ${1}" | $LOGGER + /sbin/dhcpcd -L -t ${DHCP_TIMEOUT[$i]:-10} ${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 ${1} stop # Kill wireless daemons if any. + fi + # If the interface is a bridge, then destroy it now: + if [ -n "${BRNICS[$i]}" ]; then + br_close $i + fi + fi +} + +##################### +# GATEWAY FUNCTIONS # +##################### + +# Function to bring up the gateway if there is not yet a default route: +gateway_up() { + if ! /sbin/route -n | grep "^0.0.0.0" 1> /dev/null ; then + if [ ! "$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 + ;; +'lo_start') # Start the loopback interface: + lo_up + ;; +*_start) # Example: "eth1_start" will start the specified interface 'eth1' + INTERFACE=`echo $1 | /bin/cut -d '_' -f 1` + if_up $INTERFACE + gateway_up + ;; +'lo_stop') # Stop the loopback interface: + lo_down + ;; +*_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 + ;; +'lo_up') # Start the loopback interface: + lo_up + ;; +*_up) # "*_up" does the same thing as "*_start" + INTERFACE=`echo $1 | /bin/cut -d '_' -f 1` + if_up $INTERFACE + gateway_up + ;; +'lo_down') # Stop the loopback interface: + lo_down + ;; +*_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: + start +esac + +# End of /etc/rc.d/rc.inet1 |