#! /bin/sh
#
# $Id: nw_node_preremove.SunOS,v 1.6.10.4 2005/12/15 03:46:52 chejle Exp $ Copyright (c) 2003-2005 EMC Corporation.
#

#
# Copyright (c) 2003-2005 EMC Corporation.
#
# All rights reserved.  This is an UNPUBLISHED work, and
# comprises proprietary and confidential information of EMC.
# Unauthorized use, disclosure, and distribution are strictly
# prohibited.  Use, duplication, or disclosure of the software
# and documentation by the U.S. Government is subject to
# restrictions set forth in a license agreement between the
# Government and EMC or other written agreement specifying
# the Government's rights to use the software and any applicable
# FAR provisions, such as FAR 52.227-19.
#

PATH=/usr/sbin:/usr/bin:/sbin
PRODUCT_NAME="Sun StorEdge EBS"

#==============================================================================
# Function:	unload_drivers
# Summary:	unload the lus and op drivers so they can be removed
#==============================================================================
unload_drivers()
{
if [ `uname -r | cut -f 2 -d '.'` -lt 10 ]; then
	# remove lus driver on Solaris 9 and below
	rem_drv lus > /dev/null 2>&1
	if [ $? -eq 0 ]; then
		echo "lus driver unloaded"
	else
		echo "lus driver did not unload properly"
		exit 2
	fi
else
	# cleanup and unload/reload sgen driver on Solaris 10 and above
	# if user says it is OK

	# always remove any mods we made to /kernel/drv/sgen.conf
	del_sgen

	ID=`modinfo | grep sgen | awk '{print $1}'`
	if [ -n "$ID" ]; then
		echo
		echo "The changes made to sgen.conf will not take effect until sgen is reloaded. "
		echo
		echo "If you are sure that no process is currently using sgen to control "
		echo "     a tape library or other device, then it may be safely unloaded. "
		RESULT=`ckyorn -Q -p "Would you like to unload sgen? (default=no)" -d no`
		if [ `expr ${RESULT} : [yY]` -ne 0 ]; then
			modunload -i ${ID}
			if [ $? != 0 ]; then
				echo "   ERROR: modunload -i $ID failed "
				echo "   You must unload and reload sgen manually or reboot this system before "
				echo "   changes will take effect "
				echo
			else
				echo "  sgen unloaded OK - we will now reload it so other applications "
				echo "  that depend on it will continue to function properly. "
				echo
				modload -p drv/sgen
			fi
		else
				echo "   You must unload and reload sgen manually or reboot this system before "
				echo "   changes will take effect "
				echo

		fi
	else
		# on removal, if sgen isn't currently loaded we don't need to do anything...
		echo "	sgen is not currently loaded so we have nothing to do right here. Have a nice day!"
	fi

fi
rem_drv op > /dev/null 2>&1
if [ $? -eq 0 ]; then
	echo "optical driver unloaded"
else
	echo "optical driver did not unload properly"
	exit 2
fi
}

#==============================================================================
# Function:	del_sgen
# Summary:	remove entries from /kernel/drv/sgen.conf
#==============================================================================
del_sgen()
{
file=${PKG_INSTALL_ROOT}/kernel/drv/sgen.conf
echo "Removing entries from ${file}"

# remove entries from /etc/devlink.tab
sedcmd="/^#begin - added by ${PKGINST}/,/^#end - added by ${PKGINST}/d"
sed -e "${sedcmd}" ${file} > ${file}.tmp.$$
if [ $? -eq 0 ]; then
	mv ${file}.tmp.$$ ${file}
else
	echo "cleanup of ${file} failed"
	exit 2
fi
}

#==============================================================================
# Function:	stop_daemons
# Summary:	find nsr_shutdown and stop any running daemons
#==============================================================================
stop_daemons()
{
if [ $PKGINST = LGTOnode ]; then
	NSR_SHUTDOWN=${CLIENT_BASEDIR}/sbin/nsr_shutdown
else
	NSR_SHUTDOWN=${CLIENT_BASEDIR}/sbin/nsr/nsr_shutdown
fi

[ -z "${NSR_SHUTDOWN}" ] && return		# not installed
[ ! -x "${NSR_SHUTDOWN}" ] && return		# not executable

${NSR_SHUTDOWN} -l > /dev/null 2>&1		# no running daemons

if [ $? -eq 0 ]; then
	echo "Shutting down the ${PRODUCT_NAME} daemons"
	${NSR_SHUTDOWN} -q
fi

}

#==============================================================================
# Function:	main
#==============================================================================
stop_daemons
unload_drivers
exit 0