#!/bin/bash
#
# SCSI-specific hotplug policy agent.
#
# This should handle 2.2.18+ (?) and 2.4.* SCSI hotplugging,
# with a consistent framework for adding device and driver
# specific treatments.
#
# Kernel SCSI hotplug params include:
#	
#	ACTION=%s [add or remove]
#	SCSI_HOST=%u
#	SCSI_BUS=%u
#	SCSI_TARGET=%u
#	SCSI_LUN=%u
#	SCSI_VENDOR=%s
#	SCSI_MODEL=%s
#	SCSI_REV=%s
#	SCSI_TYPE=%d
#	SCSI_REMOVABLE=%d
#	SCSI_EMULATED=%d
#	SCSI_EVENT_ATTACHED=%lu
#	[ SCSI_EVENT_DETACHED=%lu when ACTION=remove]
#
# If devfs is being used, a newly added SCSI device will be found in
# the directory:
# /dev/scsi/host$SCSI_HOST/bus$SCSI_BUS/target$SCSI_TARGET/lun$SCSI_LUN
#
#
# HISTORY:
#
# 8-Mar-2001	First cut (dpg)
#
# $Id: 
#

cd /etc/hotplug
. hotplug.functions
# DEBUG=yes export DEBUG

case $ACTION in

add)
	case $SCSI_TYPE in
	0 | 7)
		# TYPE_DISK or TYPE_MOD
		$MODPROBE sd_mod > /dev/null 2>&1
		# mesg scsi.agent loading sd_mod
		;;
	5 | 4)
		# TYPE_ROM or TYPE_WORM
		$MODPROBE sr_mod > /dev/null 2>&1
		# should now check /proc/sys/dev/cdrom/info for "1"
		# in CD-R or CD-RW row. If so load sg
		# mesg scsi.agent loading sr_mod
		;;
	1)
		# TYPE_TAPE
		if [ "$SCSI_VENDOR" = "OnStream" ]; then
			$MODPROBE osst > /dev/null 2>&1
			# mesg scsi.agent loading osst
		else
			$MODPROBE st > /dev/null 2>&1
			# mesg scsi.agent loading st
		fi
		;;
	*)
		# something else (scanner) so load sg
		$MODPROBE sg > /dev/null 2>&1
		# mesg scsi.agent loading sg
		;;
	esac
	;;
remove)
	# could try rmmod here but that might be pre-emptive
	;;
*)
	mesg SCSI $ACTION event not supported
        exit 1
esac