diff options
Diffstat (limited to 'sysconfig/network-scripts/ifup-aliases')
| -rwxr-xr-x | sysconfig/network-scripts/ifup-aliases | 381 |
1 files changed, 0 insertions, 381 deletions
diff --git a/sysconfig/network-scripts/ifup-aliases b/sysconfig/network-scripts/ifup-aliases deleted file mode 100755 index 52d43ea8..00000000 --- a/sysconfig/network-scripts/ifup-aliases +++ /dev/null @@ -1,381 +0,0 @@ -#!/bin/bash - -# -# configures aliases of device $1 -# -# This script goes out of its way to arrive at the configuration of ip -# aliases described in the ifcfg-$DEV:* and ifcfg-$DEV-range* files from -# whatever existing configuration it may be given: existing aliases not -# specified in the configuration will be removed, netmasks and broadcast -# addrs will be updated on existing aliases, and new aliases will be setup. -# -# range specification files: -# -# One can specify ranges of alised ipaddress using ifcfg-$DEV-range* files. -# Specify multiple ranges using multiple files, such as ifcfg-eth0-range0 and -# ifcfg-eth0-range1, etc. In these files, the following configuration variables -# specify the range: -# -# IPADDR_START -- ipaddr to start range at. eg "192.168.30.1" -# IPADDR_END -- ipaddr to end range at. eg "192.168.30.254" -# CLONENUM_START -- interface clone number to start using for this range. eg "0" -# -# The above example values create the interfaces eth0:0 through eth0:253 using -# ipaddrs 192.168.30.1 through 192.168.30.254, inclusive. -# -# Other configuration variables such as NETMASK and BROADCAST may be specified -# in the range file and will apply to all of the ipaddresses in the range. Range -# files also inherit configuration from the ifcfg-$DEV file just like normal. -# -# Note that IPADDR_START and IPADR_END are required to be in the same class-c -# block. I.e. IPADDR_START=192.168.30.1 and IPADDR_END=192.168.31.255 is -# not valid. -# -# speed with large sets of interfaces: -# -# Considerable effort was spent making this script fast. It can efficiently -# handle a thousand ip aliases on one interface. -# -# With large sets of ipaddresses the NO_ALIASROUTING=yes configuration is -# highly recommended. (This can be specified in ifcfg-$DEV and inherited.) This -# prevents this script from setting up routing details for the virtual -# interfaces, which I don't think is needed, because outgoing traffic can use the -# main interface. However, make your own conclusions on what you need. -# -# My test setup of four class C address blocks on a P166 took 25 seconds of -# which 16 seconds of this was spent in the ifcconfig calls. Without the -# NO_ALIASROUTING=yes config an additional 12 seconds is spent in route calls. -# -# notes on internals: -# -# This script uses the bash "eval" command to lookup shell variables with names -# which are generated from other shell variables. This allows us to, in effect, -# create hashes using the shell variable namesspace by just including the hash -# key in the name of the variable. -# -# This script originally written by: David Harris <dharris@drh.net> -# Principal Engineer, DRH Internet -# June 30, 1999 -# -# modified by: Bill Nottingham <notting@redhat.com> - -TEXTDOMAIN=initscripts -TEXTDOMAINDIR=/etc/locale - -device=$1 -if [ "$device" = "" ]; then - echo $"usage: ifup-aliases <net-device> [<parent-config>]\n" - exit 1 -fi - -PARENTCONFIG=${2:-ifcfg-$device} -parent_device=$device - -cd /etc/sysconfig/network-scripts -. ./network-functions - -# Grab the current configuration of any running aliases, place device info -# into variables of the form: -# rdev_<index>_addr = <ip address> -# rdev_<index>_pb = <prefix>_<broadcast> -# rdevip_<ipaddress> = <index> -# Example: -# rdev_0_addr=192.168.1.1 -# rdev_0_pb=24_192.16.1.255 -# rdevip_192_168_1_1=0 -# -# A list of all the devices is created in rdev_LIST. - -eval $( ip addr show $device label $device:* | \ - awk 'BEGIN { COUNT=0;LAST_DEV="" } /inet / { - # Split IP address into address/prefix - split($2,IPADDR,"/"); - # Create A_B_C_D IP address form - IP_ADDR=IPADDR[1]; - gsub(/\./,"_",IP_ADDR); - # Split device into device:index - split($NF,DEV,":"); - # Update last device - LAST_DEV=LAST_DEV " " DEV[2]; - printf("rdev_%s_addr=%s\nrdevip_%s=%s\nrdev_%s_pb=%s_%s\nrdev_LIST=\"%s\"\n", - DEV[2],IPADDR[1],IP_ADDR,DEV[2],DEV[2],IPADDR[2],$4,LAST_DEV); - } END { - if(LAST_DEV == "") print "no_devices_are_up=yes" - }' ); - -# -# Store configuration of the parent device and network -# - -# read from the /etc/sysconfig/network -eval ` ( - . /etc/sysconfig/network; - echo network_GATEWAY=$GATEWAY\;; - echo network_GATEWAYDEV=$GATEWAYDEV\;; -) ` - -# read defaults from the parent config file -[ -f $PARENTCONFIG ] || { - net_log $"Missing config file $PARENTCONFIG." - exit 1 -} -eval ` ( - . ./$PARENTCONFIG; - echo default_PREFIX=$PREFIX\;; - echo default_NETMASK=$NETMASK\;; - echo default_BROADCAST=$BROADCAST\;; - echo default_GATEWAY=$GATEWAY\;; - echo default_NO_ALIASROUTING=$NO_ALIASROUTING\;; - echo default_ARPCHECK=$ARPCHECK\;; - echo default_ARPUPDATE=$ARPUPDATE\;; -) ` -[ -z "$default_GATEWAY" ] && default_GATEWAY=$network_GATEWAY - -function ini_env () -{ - DEVICE="" - IPADDR="" - IPV6ADDR="" - PREFIX=$default_PREFIX - NETMASK=$default_NETMASK - BROADCAST=$default_BROADCAST - GATEWAY=$default_GATEWAY - NO_ALIASROUTING=$default_NO_ALIASROUTING - ONPARENT="" - ARPCHECK=$default_ARPCHECK - ARPUPDATE=$default_ARPUPDATE -} - -function is_default_gateway () -{ - LC_ALL=C /sbin/ip route ls default scope global \ - | awk '$3 == "'"$1"'" { found = 1; } END { exit found == 0; }' -} - -# -# Read the alias configuration files and enable each aliased -# device using new_interface() -# - -function new_interface () -{ - - ipa=$IPADDR; ipb=${ipa#*.}; ipc=${ipb#*.}; - IPGLOP="${ipa%%.*}_${ipb%%.*}_${ipc%%.*}_${ipc#*.}"; - DEVNUM=${DEVICE#*:} - - MATCH='^[0-9A-Za-z_]*$' - if (LC_ALL=C; [[ ! "$DEVNUM" =~ $MATCH ]]); then - net_log $"error in $FILE: invalid alias number" - return 1 - fi - - eval " - ipseen=\$ipseen_${IPGLOP}; devseen=\$devseen_${DEVNUM}; - ipseen_${IPGLOP}=$FILE; devseen_${DEVNUM}=$FILE; - "; - - if [ -n "$ipseen" ]; then - net_log $"error in $FILE: already seen ipaddr $IPADDR in $ipseen" - return 1 - fi - - if [ -n "$devseen" ]; then - net_log $"error in $FILE: already seen device $parent_device:$DEVNUM in $devseen" - return 1 - fi - - if [ -z "$DEVICE" -o -z "$IPADDR" ]; then - if [ -n "$IPV6ADDR" -a -n "$DEVICE" ] && ! is_false "$IPV6INIT"; then - /etc/sysconfig/network-scripts/ifup-ipv6 ${DEVICE} - return $? - fi - net_log $"error in $FILE: didn't specify device or ipaddr" - return 1 - fi - - if [ -z "$NETMASK" -a -z "$PREFIX" ]; then - net_log $"error iN $FILE: didn't specify netmask or prefix" - fi - - if [ -z "$PREFIX" ]; then - eval $(/bin/ipcalc --prefix ${IPADDR} ${NETMASK}) - fi - - if [ -z "$BROADCAST" -o "$BROADCAST" = "$default_BROADCAST" ]; then - eval $(/bin/ipcalc --broadcast ${IPADDR}/${PREFIX}) - fi - - if [ "$no_devices_are_up" = "yes" ]; then - setup_this=yes - else - - setup_this="" - - eval " - rdev_addr=\$rdev_${DEVNUM}_addr; - rdev_pb=\$rdev_${DEVNUM}_pb; - rdev_mark=\$rdev_${DEVNUM}_mark; - rdevip=\$rdevip_${IPGLOP}; - "; - - if [ -n "$rdev_addr" ]; then - if [ "$rdev_addr" = "${IPADDR}" ]; then - newmark=keep - if [ "$rdev_pb" != "${PREFIX}_${BROADCAST}" ]; then - setup_this=freshen - else - setup_this=no - fi - else - if [ "$rdev_mark" != "remove" ]; then - /sbin/ip addr flush dev $parent_device label $parent_device:${DEVNUM} - do_netreport=yes - fi - newmark=remove - setup_this=yes - fi - if [ -n "$rdev_mark" -a "$rdev_mark" != "$newmark" ]; then - net_log $"error in ifcfg-${parent_device}: files" - return 1 - fi - eval " rdev_${DEVNUM}_mark=\$newmark "; - else - setup_this=yes - fi - - if [ -n "$rdevip" -a "$rdevip" != "${DEVNUM}" ]; then - eval " mark_remove=\$rdev_${rdevip}_mark "; - if [ -n "$mark_remove" -a "$mark_remove" != "remove" ]; then - net_log $"error in ifcfg-${parent_device}: files" - return 1 - fi - if [ "$mark_remove" != "remove" ]; then - eval " rdev_${rdevip}_mark=remove "; - /sbin/ip addr flush dev $parent_device label $parent_device:$rdevip - do_netreport=yes - fi - fi - - fi - - if [ "$setup_this" = "freshen" ] ; then - # we can do the freshen stuff right now - /sbin/ip addr change ${IPADDR}/${PREFIX} brd ${BROADCAST} - fi - - if [ "$setup_this" = "yes" ] ; then - if [ "${parent_device}" != "lo" ] && [ "${ARPCHECK}" != "no" ] && \ - is_available ${parent_device} && \ - ( grep -qswi "up" /sys/class/net/${parent_device}/operstate || grep -qswi "1" /sys/class/net/${parent_device}/carrier ) ; then - echo $"Determining if ip address ${IPADDR} is already in use for device ${parent_device}..." - ARPING=$(/sbin/arping -c 2 -w ${ARPING_WAIT:-3} -D -I ${parent_device} ${IPADDR}) - if [ $? = 1 ]; then - ARPINGMAC=$(echo $ARPING | sed -ne 's/.*\[\(.*\)\].*/\1/p') - net_log $"Error, some other host ($ARPINGMAC) already uses address ${IPADDR}." - return 1 - fi - fi - - /sbin/ip addr add ${IPADDR}/${PREFIX} brd ${BROADCAST} \ - dev ${parent_device} label ${DEVICE} - - # update ARP cache of neighboring computers: - if ! is_false "${ARPUPDATE}" && [ "${REALDEVICE}" != "lo" ]; then - /sbin/arping -q -A -c 1 -I ${parent_device} ${IPADDR} - ( sleep 2; /sbin/arping -q -U -c 1 -I ${parent_device} ${IPADDR} ) > /dev/null 2>&1 < /dev/null & - fi - - ! is_false "$IPV6INIT" && \ - /etc/sysconfig/network-scripts/ifup-ipv6 ${DEVICE} - - if [ "$NO_ALIASROUTING" != yes ]; then - - GATEWAYDEV=$network_GATEWAYDEV; - - if [ -n "${GATEWAY}" -a \ - \( -z "${GATEWAYDEV}" -o "${GATEWAYDEV}" = "${DEVICE}" \) ]; then - # set up default gateway, if it isn't already there - if ! is_default_gateway "$GATEWAY"; then - ip route replace default ${METRIC:+metric $METRIC} via ${GATEWAY} dev ${DEVICE} - fi - fi - - /etc/sysconfig/network-scripts/ifup-routes ${DEVICE} ${NAME} - - do_netreport=yes - ifuplocal_queue="$ifuplocal_queue $DEVICE" - fi - fi -} - -if [ "$BASH_VERSINFO" ]; then - shopt -s nullglob -else - allow_null_glob_expansion=foo -fi - -for FILE in ifcfg-${parent_device}:* ; do - is_ignored_file "$FILE" && continue - ini_env - . ./$FILE - [ -z "$DEVICE" ] && DEVICE=${FILE##ifcfg-} - [ "$ONPARENT" != "no" -a "$ONPARENT" != "NO" ] && new_interface - unset DEVICE -done - -for FILE in ifcfg-${parent_device}-range* ; do - is_ignored_file "$FILE" && continue - ini_env - . ./$FILE - - ipaddr_prefix=${IPADDR_START%.*} - ipaddr_startnum=${IPADDR_START##*.} - ipaddr_endnum=${IPADDR_END##*.} - - if [ "${IPADDR_START%.*}" != "${IPADDR_END%.*}" ]; then - net_log $"error in $FILE: IPADDR_START and IPADDR_END don't agree" - continue - fi - - if [ $ipaddr_startnum -gt $ipaddr_endnum ]; then - net_log $"error in $FILE: IPADDR_START greater than IPADDR_END" - continue - fi - - ipaddr_num=$ipaddr_startnum - ipaddr_clonenum=$CLONENUM_START - - while [ $ipaddr_num -le $ipaddr_endnum ]; do - IPADDR="$ipaddr_prefix.$ipaddr_num" - DEVICE="$parent_device:$ipaddr_clonenum" - IPV6INIT="no" - [ "$ONPARENT" != "no" -a "$ONPARENT" != "NO" ] && new_interface - ipaddr_num=$(($ipaddr_num+1)) - ipaddr_clonenum=$(($ipaddr_clonenum+1)) - done -done - -# -# Remove any devices that should not be around -# -for DEVNUM in $rdev_LIST ; do - eval " rdev_mark=\$rdev_${DEVNUM}_mark " - if [ -z "$rdev_mark" ]; then - /sbin/ip addr flush dev $parent_device label $parent_device:${DEVNUM} - do_netreport=yes - fi -done -# -# Notify of new device creation -# - -if [ -n "$do_netreport" ]; then - do_netreport -fi - -if [ -x /sbin/ifup-local ]; then - for DEVICE in $ifuplocal_queue ; do - /sbin/ifup-local ${DEVICE} - done -fi |