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#!/sbin/runscript

opts="${opts} attach"

depend() {
	# we can use dns and net, but we can also in most cases live without them
	use dns net
}

create_work_directory() {
	if [[ ! -d $RUNTIMEDIR ]]; then
		einfo "Directory $RUNTIMEDIR not existing, creating now."
		mkdir $RUNTIMEDIR
		chown ${USER}:${GROUP} $RUNTIMEDIR
		if [[ ! -d $RUNTIMEDIR ]]; then
			eeror "Directory $RUNTIMEDIR could not be created!"
			return 1
		fi
		ln -s /etc/ssl/certs/ca-certificates.crt $RUNTIMEDIR/ca-bundle.crt
	fi
}

generate_logs() {
	if [[ ! -f $LOGFILE ]]; then
		einfo "No $LOGFILE around. Creating new..."
		einfo "For good log rotation is great tool app-admin/logrotate"
		touch $LOGFILE
		chown ${USER}:${GROUP} $LOGFILE
	fi
}

cuda_check() {
	if [[ -f /opt/cuda/lib/libcudart.so ]]; then
		# symlink wont harm :]
		ln -snf /opt/cuda/lib/libcudart.so $RUNTIMEDIR/libcudart.so
	fi
}

start() {
	ebegin "Starting BOINC"

	create_work_directory
	cuda_check

	cd $RUNTIMEDIR

	if [[ ! -f lockfile ]]; then
		einfo "File $RUNTIMEDIR/lockfile does not exist, assuming first run."
		einfo "You need to setup an account on the BOINC project homepage beforehand!"
		einfo "Go to http://boinc.berkeley.edu/ and locate your project."
		einfo "Then either run /etc/init.d/boinc attach or connect with a gui client"
		einfo "and attach to a project with that."
		echo
		ewarn "Note that for attaching to some project you need your network up and running."
		ewarn "network is needed only for jobs fetching afterwards"
	fi

	generate_logs

	if [[ ${ALLOW_REMOTE_RPC} = "yes" ]]; then
		ARGS="${ARGS} -allow_remote_gui_rpc"
	fi
	
	# sys-apps/util-linux
	CHRT="/usr/bin/chrt ${SCHED_PARAM}"

	# check for baselayout version
	if [[ -n "${RC_UNAME}" ]]; then
		PARAMS="--background --stdout ${LOGFILE} --stderr ${LOGFILE} -- ${ARGS}"
	else
		PARAMS="-- ${ARGS} >> ${LOGFILE} 2>&1 &"
	fi

	eval ${CHRT} start-stop-daemon \
		--quiet --start --chdir ${RUNTIMEDIR} \
		--exec ${BOINCBIN} --chuid ${USER}:${GROUP} \
		--nicelevel ${NICELEVEL} \
		${PARAMS}

	RESULT=$?

	if [ "${CPU_SHARE}" -a -d /sys/kernel/uids ]; then
		BUID=`id -u ${USER}`
		# It might take a moment for start-stop-daemon to chuid
		[[ -d /sys/kernel/uids/${BUID} ]] || sleep 5 # 5 was working always here
		if [[ -w /sys/kernel/uids/${BUID}/cpu_share ]]; then
			echo ${CPU_SHARE} > /sys/kernel/uids/${BUID}/cpu_share
		fi							      
	fi	  

	eend $RESULT
}

attach() {
	printf "    Enter the Project URL: "
	read url
	printf "    Enter your Account Key: "
	read key

	RC_QUIET_STDOUT="yes" svc_status
	if [[ $? = 1 ]]; then
		svc_start
	fi
	ebegin "Attaching to project"
		# we have to work in runtime directory
		cd $RUNTIMEDIR
		# boinc does not return 1 when it fails currently
		$BOINCBIN --chuid ${USER}:${GROUP} --attach_project $url $key &> /dev/null
	eend $?

	sleep 10
	tail $LOGFILE
}

stop() {
	ebegin "Stopping BOINC"
	start-stop-daemon --stop --retry 3 --quiet --exec $BOINCBIN
	eend $?
}

restart() {
	svc_stop
	svc_start
}