: ${OK=0} ${FAIL=1} ${STOP=10}
VER=`uname -r`
HD_SPACE=/etc/conf/pack.d/hd/space.c
LINKPKG=/etc/perms/inst
Wd_Sdevice=/etc/conf/sdevice.d/wd
Wd0_Sdevice=/etc/conf/sdevice.d/wd0
Wd1_Sdevice=/etc/conf/sdevice.d/wd1
Tmp_Wd=/tmp/tmpwd
Tmp_Wd0=/tmp/tmpwd0
Tmp_Wd1=/tmp/tmpwd1
CONF=/etc/conf/cf.d
PRODUCT="VIA/VESA IDE Device Driver"

# Check whether the linkpkg exists.
linkpkg_check()
{
	if  [ ! -f $LINKPKG ] ; then
		echo "Please install the LINK PACKAGE first.\n"
		exit $FAIL
	fi
}

#Mask Default IDE Card
mask_default_ide()
{
	
	grep Y $Wd_Sdevice > /dev/null 2>&1
	if [ $? -eq 0 ] ; then
		sed "s/Y/N/" $Wd_Sdevice > $Tmp_Wd || { 
		echo "Enable to modify the $Wd_Sdevice\n"
		return $FAIL
		}
	fi

	grep Y $Wd0_Sdevice > /dev/null 2>&1
	if [ $? -eq 0 ] ; then
		sed "s/Y/N/" $Wd0_Sdevice > $Tmp_Wd0 || { 
		echo "Enable to modify the $Wd0_Sdevice\n"
		return $FAIL
		}
	fi

	grep Y $Wd1_Sdevice > /dev/null 2>&1
	if [ $? -eq 0 ] ; then
		sed "s/Y/N/" $Wd1_Sdevice > $Tmp_Wd1 || { 
		echo "Enable to modify the $Wd1_Sdevice\n"
		return $FAIL
		}
	fi
	
	trap_off	

	mv $Tmp_Wd $Wd_Sdevice > /dev/null 2>&1
	mv $Tmp_Wd0 $Wd0_Sdevice > /dev/null 2>&1
	mv $Tmp_Wd1 $Wd1_Sdevice > /dev/null 2>&1

	trap_on
	return $OK	
}

# Add the routine entry to the "/etc/conf/pack.d/hd/space.c"
add_hd_space_c()
{

ed $HD_SPACE > /dev/null 2>&1 <<EOF
/wd0
a
extern int	vth0pres(), vth0open(), vth0intr(), vth0halt();
.
/wd0
a
	{vth0pres, vth0open, vth0intr, vth0halt, 1},
.
w
EOF
}

#Rebuild the kernel.
build_kernel()
{

	cd $CONF
	getyn "You must create and install a new kernel
to complete the $PRODUCT installation.

Do you wish to create a new kernel now"  ||  {

	getyn "The $PRODUCT software will not function until a
new kernel is re-linked and installed.
Do you wish to create a new kernel now" || {
		exit $OK
		}
	}
	echo "\nRe-linking the kernel ..." >&2
	../bin/idbuild -y || { 
		echo "kernel link failed."
		exit $FAIL
	}
	echo "
The system must be re-booted for the installation to be complete

Press <Return> to continue\c"
	read x
}

# Turn on the trap.
trap_on()  {	
	trap 'echo "\nThe installation is Interrupted! Exiting ! "; cleanup 1' 1 2 3 15
}

# Turn off the trap.
trap_off()  {
	trap '' 1 2 3 15
}
 
# Remove temp files and exit with the status passed as argument
cleanup() {
	trap_off
	rm -f $Tmp_Wd $Tmp_Wd0 $Tmp_Wd1 > /dev/null 2>&1
	exit $1
}

# Get the Yes or No answer.
getyn()
{
	while	echo "\n$* (y/n)? \c">&2
	do	read yn rest
		case $yn in
		[yY])	return 0 			;;
		[nN])	return 1			;;
		*)	echo "Please answer y or n" >&2	;;
		esac
	done
}

# Main
if [ "$VER" = "3.2" ]
then
	linkpkg_check

	cd /tmp/ID/vth
	/etc/conf/bin/idcheck -p vth ; exit_code=$?
	if [ $exit_code -lt 16 ] ; then 
		mkdir /etc/conf/pack.d/vth
		/etc/conf/bin/idinstall -a -e -k -m -s -o -p -t vth
	else
		/etc/conf/bin/idinstall -u -e -k -m -s -o -p -t vth
	fi

	cd /tmp/ID/vth0
	/etc/conf/bin/idcheck -p vth0 ; exit_code=$?
	if [ $exit_code -lt 16 ] ; then 
		mkdir /etc/conf/pack.d/vth0
		/etc/conf/bin/idinstall -a -e -k -m -s -o -p -t vth0
	else
		/etc/conf/bin/idinstall -u -e -k -m -s -o -p -t vth0
	fi

	cd /tmp/ID/vth1
	/etc/conf/bin/idcheck -p vth1 ; exit_code=$?
	if [ $exit_code -lt 16 ] ; then 
		mkdir /etc/conf/pack.d/vth1
		/etc/conf/bin/idinstall -a -e -k -m -s -o -p -t vth1
	else
		/etc/conf/bin/idinstall -u -e -k -m -s -o -p -t vth1
	fi
	echo "Disable default IDE driver !"
	mask_default_ide
	echo "Disable default IDE driver successfully !\n"
	echo "Change the IDE configuration file."
	add_hd_space_c
	echo "Change the IDE configuration file successfully !\n "
	build_kernel
else
	echo "This device driver must be installed on the SCO UNIX upper" 
	echo "\"3.2\" version.\n"
	exit 
fi