configure_network.sh

#!/bin/sh
#
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# (the "License").  You may not use this file except in compliance
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#
# Simple script to configure the network adapter according to th values of the nvramrc variable network-boot-arguments
#
# History
#   07.11.2009 v1.0.0 /bs
#       initial release for the Extended MilaX WANBOOT image v1.0.0
#   09.11.2009 v1.0.1 /bs
#       new version for the Extended MilaX WANBOOT image v1.0.1:
#           added code to plumb the network adapter
#           added code to handle multiple net aliasse
#
# Links:
#   Description and Download links for the Extended MilaX WANBOOT image:
#       http://wikis.sun.com/display/BigAdmin/Converting+the+MilaX+Live+CD+for+SPARC+to+a+WANBOOT+image#ConvertingtheMilaXLiveCDforSPARCtoaWANBOOTimage-MilaXWANBOOTimages
#
# Author
#   Bernd.Schemmer@gmx.de
#   http://www.bnsmb.de
#
#

PATH=/usr/sbin/:/sbin:/usr/bin:/bin:${PATH}
export PATH

# get the contents of the nvramrc variable network-boot-arguments
#
eval ` eeprom network-boot-arguments | cut -f2- -d "=" | tr -s ",-" ";_"  `

# result variables of the eval command:
#
# client_id=0AE1E784
# file=http://10.224.164.136/cgi_bin/wanboot_cgi
# host_ip=10.225.231.132.
# hostname=rtdev01t1
# router_ip=10.225.231.254
# subnet_mask=255.255.255.128

NETDEV=""
NETWORK_DEVICE=`prtconf -vpPD | grep " net:"  | tr -s " " | cut -f3 -d " " | tr -d "'" ` 
[ "${NETWORK_DEVICE}"x != ""x ] && NETDEV=` ls -l /dev | grep ${NETWORK_DEVICE}: | tr -s " " | cut -f9 -d " " `

NETWORK_CONFIGURED=1

if [ "${NETDEV}"x != ""x ] ; then
      ifconfig  "${NETDEV}" plumb
      CUR_IP=`ifconfig  "${NETDEV}" | grep inet | cut -f2 -d " " `
      if [ "${CUR_IP}"x != "0.0.0.0"x ] ;then
            echo "Network adapter "${NETDEV}" already configured:"
            ifconfig "${NETDEV}"
            echo "Nothing to do here"
            NETWORK_CONFIGURED=0
      fi

      if [ "${NETWORK_CONFIGURED}" = 1 ] ; then
            if [ "${NETDEV}"x != ""x -a "${host_ip}"x != ""x -a "$ {router_ip}"x != ""x -a "${subnet_mask}" != ""x ] ; then
                  echo "Configuring the network ..."
                  set -x
                  ifconfig ${NETDEV} plumb  ${host_ip} netmask ${subnet_mask} broadcast + up
                  route add default ${router_ip}
                  set +x
            else
                  echo "Network configuration is incomplete -- can not configure the network."
            fi
      fi
fi

if [ "${hostname}"x != ""x ] ; then
      echo "Configuring the nodename ..."
      uname -S "${hostname}"
      echo "${hostname}">/etc/nodename..
      grep "${hostname}" /etc/hosts >/dev/null
      if [ $? -ne 0 ] ; then
            if [ "${host_ip}"x != ""x ] ; then
                  echo ${host_ip} ${hostname} >>/etc/hosts
            fi
      else
            echo "/etc/hosts already configured."
      fi
else
      echo "Nodename not found in the nvram -- can not configure the nodename"
fi