#!/usr/bin/sh
# "ihcp_remove"
# 18 May, 1998
#
# This shell script will remove all traces of the ihcp driver
# and install a 'clean' kernel
#
# This script will do the following:
# 1. Remove the ihcp archive from /usr/conf/lib
# 2. Remove ihcp from /usr/conf/master.d
# 3. Remove the ihcp entry from /stand/system
# 4. Remove the device special files from /dev
# 5. Copy vmunix.back to vmunix - if vmunix.back exists
#    If not, make a virgin unix

	echo

# if /usr/conf/lib/libihcp.a exists, remove it

	if [ -a /usr/conf/lib/libihcp.a ] 
	then
		echo removing /usr/conf/lib/libihcp.a
		echo

		rm /usr/conf/lib/libihcp.a
	fi

# if /usr/conf/master.d/ihcp exists, remove it

	if [ -a /usr/conf/master.d/ihcp ]
	then
		echo removing /usr/conf/master.d/ihcp
		echo

		rm /usr/conf/master.d/ihcp
	fi

# remove the ihcp entry from /stand/system if it is present

	grep ihcp /stand/system >./ihcp_temp

	if [[ -s ./ihcp_temp ]]
	then
		echo removing ihcp from /stand/system
		echo

		/sbin/chmod 666 /stand/system
		sed -e '/ihcp/d' /stand/system >./ihcp_temp
		cp ./ihcp_temp /stand/system
		/sbin/chmod 444 /stand/system
	fi

	if [ -a ./ihcp_temp ]
	then
		rm ./ihcp_temp
	fi

# remove any ihcp special files from /dev

	if [ -a /dev/ihcp* ]
	then
		echo removing ihcp files from /dev
		echo

		rm /dev/ihcp*
	fi

# if /stand/vmunix.back exists, copy it to /stand/vmunix,
# else, make a fresh unix

	if [[ -s /stand/vmunix.back ]]
	then
		echo copying /stand/vmunix.back to /stand/vmunix
		echo

		cp /stand/vmunix.back /stand/vmunix
	else
		echo making clean unix
		echo

		/usr/sbin/mk_kernel
		cp /stand/build/vmunix_test /stand/vmunix
	fi

	echo
	echo DONE - if no error messages, reboot to install clean kernel
	echo