init.d script for using seti user & group, plus also fix for stopping bug

setiathome (text/plain), 2.33 KB, created by Julie Brandon on 2004-04-22 12:13:22 UTC

#!/sbin/runscript

if [ -z "${SETIATHOME_THREADS}" ]; then
	SETIATHOME_THREADS=$( egrep -c "^bogomips" /proc/cpuinfo )
fi

depend() { 
	need net
}

checkconfig() {
	SETIBINDIR="/opt/setiathome"
	if [ ! -e "${SETIATHOME_DIR}" ] ; then
		einfo "Creating ${SETIATHOME_DIR}"
		mkdir "${SETIATHOME_DIR}"
		chown seti.seti "${SETIATHOME_DIR}"
	fi

	if [ ! -e "${SETIATHOME_DIR}/user_info.sah" ] ; then
		eerror "Please setup SETI@home first by running the following commands:"
		eerror cd "${SETIATHOME_DIR}"
		eerror su seti -c ${SETIBINDIR}/setiathome -login ${SETIATHOME_OPTIONS}
		return 1
	fi

	if [ "${SETIATHOME_THREADS}" != '1' ] ; then
		cd ${SETIATHOME_DIR}
		for thread in `seq 2 "${SETIATHOME_THREADS}"`; do
			if [ ! -e "${SETIATHOME_DIR}/thread${thread}" ]; then
				mkdir "${SETIATHOME_DIR}/thread${thread}"
				cp "${SETIATHOME_DIR}/user_info.sah" "${SETIATHOME_DIR}/thread${thread}"
				chown seti.seti "${SETIATHOME_DIR}/thread${thread}" "${SETIATHOME_DIR}/thread${thread}/user_info.sah"
			fi
		done
	fi
	return 0
}

start() {
	checkconfig || return 1;

	if [ "${SETIATHOME_THREADS}" = '1' ] ; then
		ebegin "Starting SETI@home"
	else
		ebegin "Starting SETI@home (${SETIATHOME_THREADS} threads)"
	fi

	for thread in `seq 1 "${SETIATHOME_THREADS}"`; do
		cd "${SETIATHOME_DIR}"
		if [ "${thread}" != '1' ]; then
			cd "thread${thread}"
		fi

		${SETIATHOME_DIR}/setiwrapper ${SETIBINDIR} ${SETIATHOME_OPTIONS} >& setiathome.log &
	done

	eend $?
}

stop() {
	ebegin "Stopping SETI@home"
	# By default, killing the setiwrapper shell processes does not
	# reliably appear to immediately abort the running child commands, as
	# such we need to kill off the shell AND its child command
	# processes as neatly as we can
	
	# Grab the PIDs of the setiwrapper shell scripts
	WRAPPERPPIDS=`/sbin/pidof -x setiwrapper`
	# For each setiwrapper script ..
	for WRAPPERPPID in ${WRAPPERPPIDS}; do
		# Stop the shell script running (so it can't potentially
		# spawn new children)
		kill -STOP ${WRAPPERPPID}
		# Terminate all the children created by the script
		kill -TERM `ps --no-headers -opid --ppid ${WRAPPERPPID}`
		# Ask the wrapper script to neatly hang-up
		kill -HUP ${WRAPPERPPID}
		# Restart the stopped script so that it gets its HUP signal,
		# and can terminate cleanly, leaving no zombies 
		# (running, dead, or alive)
		kill -CONT ${WRAPPERPPID}
	done
	eend $?
}