#!/bin/bash
#
# atop		Startup script for the Atop process logging in background
#
# chkconfig: 2345 96 4
# description: Advanced system and process activity monitor
#
### BEGIN INIT INFO
# Provides:             atop
# Required-Start:	$local_fs $remote_fs
# Required-Stop:	$local_fs $remote_fs
# Default-Start:	2 3 4 5
# Default-Stop:		0 1 6
# Short-Description: Advanced system and process activity monitor
# Description: Advanced system and process activity monitor
### END INIT INFO

. /lib/lsb/init-functions

# Check existance of binaries 
[ -f /usr/bin/atop ] || exit 0

PIDFILE=/run/atop.pid
RETVAL=0

# See how we were called.
case "$1" in
  start)
	# Check if atop runs already
	#
	if [ -e $PIDFILE ] && ps -p `cat $PIDFILE` | grep 'atop$' > /dev/null
	then
		:
	else
		# Start atop
		/usr/share/atop/atop.daily&
	fi
	touch /run/lock/atop
	;;

  stop)
	# Check if atop runs
	#
	if [ -e $PIDFILE ] && ps -p `cat $PIDFILE` | grep 'atop$' > /dev/null
	then
		kill -USR2 `cat $PIDFILE`	# final sample and terminate

		CNT=0

		while ps -p `cat $PIDFILE` > /dev/null
		do
			let CNT+=1

			if [ $CNT -gt 5 ]
			then
				break;
			fi

			sleep 1
		done

		rm $PIDFILE
	fi
	rm /run/lock/atop
	;;

  status)
	;;

  reload)
	/usr/share/atop/atop.daily&
	;;

  restart|force-reload)
	/usr/share/atop/atop.daily&
	;;

  *)
	echo "Usage: $0 [start|stop|status|reload|restart]"
	exit 1
esac

exit $RETVAL