#!/sbin/runscript
# Copyright 1999-2003 Gentoo Technologies, Inc.
# Distributed under the terms of the GNU General Public License v2
# $Header: $

depend() {
	need localmount
}

# Depending on the kernel version, the packet devices have the
# following format (where {#} is the minor block number):

# <  2.6.8: /dev/pktcdvd{#}  (all devices in /dev)
# >= 2.6.8: /dev/pktcdvd/{#} (all devices in /dev/pktcdvd)

# The pktsetup program doesn't seem to return any error codes;
# only error messages.  So, we do our best to see whether the
# block device has been set up or torn down correctly.

# This method is not terribly elegent.  Blech.

start() {
	local cdrw_dev=""
	local errmsg=""
	local minor=0
	local retval=0
	local last_result=0

	/sbin/modprobe -a pktcdvd && sleep 5 # udev is propagating devices. zzzzz....

	for cdrw_dev in ${cdrw_list}
	do
		ebegin "Enabling CD-RW packet writing on ${cdrw_dev}"
		# Starting with kernel 2.6.8 there is a different syntax
		# for the pktsetup program.
		if [ "$(get_KV)" -ge "$(KV_to_int '2.6.8')" ]
			then errmsg=$(/usr/bin/pktsetup ${minor} ${cdrw_dev} 2>&1)
			else errmsg=$(/usr/bin/pktsetup /dev/pktcdvd${minor} ${cdrw_dev} 2>&1)
		fi
		if [ -z "${errmsg}" ]
			then last_result=0
			else last_result=1
		fi
		retval=$(( ${retval} + ${last_result} ))
		minor=$(( ${minor} + 1 ))
		if [ ${last_result} -gt 0 ]
		then
			ewend ${last_result} "Failed to enable packet writing on ${cdrw_dev}: ${errmsg}"
		fi
	done
	eend ${retval}
}

stop() {
	local cdrw_dev=""
	local errmsg=""
	local minor=0
	local retval=0
	local last_result=0

	for cdrw_dev in ${cdrw_list}
	do
		ebegin "Disabling CD-RW packet writing on ${cdrw_dev}"
		# We need to dismount the cdrw drive before we're allowed
		# to deallocate the block device.
		if [ "$(get_KV)" -ge "$(KV_to_int '2.6.8')" ]
		then
			umount /dev/pktcdvd/${minor} >/dev/null 2>&1 || true
			errmsg=$(/usr/bin/pktsetup -d ${minor} 2>&1)
		else
			umount /dev/pktcdvd${minor} >/dev/null 2>&1 || true
			errmsg=$(/usr/bin/pktsetup -d /dev/pktcdvd${minor} ${cdrw_dev} 2>&1)
		fi
		if [ -z "${errmsg}" ]
			then last_result=0
			else last_result=1
		fi
		retval=$(( ${retval} + ${last_result} ))
		minor=$(( ${minor} + 1 ))
		if [ ${last_result} -gt 0 ]
		then
			ewend ${last_result} "Failed to disable packet writing on ${cdrw_dev}: ${errmsg}"
		fi
	done

	/sbin/modprobe -r pktcdvd

	eend ${retval}
}