#!/bin/bash

#$Header: /usr/local/cvsroot/3GNetworkEmulator/Source/UUInterface/Load.Nistnet,v 1.1 2003/11/17 16:17:02 penuser Exp $

# Script to load the kernel module, saving the rtc if possible

#

# Mark Carson, NIST/UMCP

#  1/2001

# Surely there's a better way to do this...

versionstring=`uname -r | sed 's/\./ /g'`

read version0 version1 version2 << below

$versionstring

below

case $version0 in

	2)

		;;

	*)

		echo Sorry, NIST Net runs only on 2.0.xx or 2.2.xx kernels

		exit 1

		;;

esac

# This no doubt is not the way to find the system map

# for the current kernel, but hopefully it will do.

if [ -r /System.map ] ; then

	map=/System.map

elif [ -r /boot/System.map ] ; then

	map=/boot/System.map

elif [ -r /usr/src/linux/System.map ] ; then

	map=/usr/src/linux/System.map

fi

case $version1 in

	0)

		# Look for irq_action - why doesn't a pipe work? Sheesh...

		grep irq_action $map > /tmp/j$$

		read irq_action junk < /tmp/j$$

		rm /tmp/j$$

		if [ "$irq_action" != "" ] ; then

			insmod nistnet irq_desc_addr=0x$irq_action

		else

			insmod nistnet

		fi

		;;

	2)

		# Look for irq_desc - why doesn't a pipe work? Sheesh...

		grep irq_desc $map > /tmp/j$$

		read irq_desc junk < /tmp/j$$

		rm /tmp/j$$

		if [ "$irq_desc" != "" ] ; then

			insmod nistnet irq_desc_addr=0x$irq_desc

		else

			insmod nistnet

		fi

		;;

	4)

		# Try to remove rtc module

		rmmod rtc

		if [ $? != 0 ] ; then

		    echo "Couldn't find rtc module - /dev/rtc will be mostly"

		    echo "unusable after running nistnet.  Sorry about that...."

		    echo "To prevent this message, recompile rtc"

		    echo "(Enhanced Real Time Clock Support, under"

		    echo "character devices) as a module."

		else

		    echo "rtc module removed - you may want to reinstall it"

		    echo "(with insmod rtc) after you are done with nistnet"

		fi

		insmod nistnet

		echo "nistnet module installed"

		;;

	*)

		echo Sorry, NIST Net runs only on 2.0, 2.2 or 2.4 kernels

		exit 1

		;;

esac

exit 0