#!/bin/sh
# zram-swap:	Configure and activate /dev/zram0 as swap device
#
# chkconfig: 2345 08 92
# description:	Configure and activate /dev/zram0 as swap device

# Do not load RH compatibility interface.
WITHOUT_RC_COMPAT=1

# Source function library.
. /etc/init.d/functions

. /etc/sysconfig/zram-swap

start()
{
	RETVAL=1
	SWAPON="swapon /dev/$ZDEV"
	modprobe zram
	[ -b "/dev/ZDEV" ] || sleep 1
	if [ -n "$ZSIZE" ] && [ "$ZSIZE" -ge 1 ] && [ -n "$ZDEV" ] && [ -b "/dev/$ZDEV" ]; then
		echo "$ZSIZE" > /sys/block/$ZDEV/disksize
		mkswap /dev/$ZDEV
		[ -n "$ZPRIORITY" ] && SWAPON="swapon -p $ZPRIORITY /dev/$ZDEV" 
		action "Activating swap on $ZDEV" $SWAPON
		RETVAL=0
	fi
	return $RETVAL
}

stop()
{
		action "Deactivate $ZRAM:" swapoff /dev/$ZDEV
		echo 1 > /sys/block/$ZDEV/reset
	RETVAL=$?
	return $RETVAL
}

restart()
{
	stop
	start
}

# See how we were called.
case "$1" in
	start)
		start
		;;
	stop)
		stop
		;;
	reload|restart)
		restart
		;;
	condreload|condrestart|condstop)
		;;
	*)
		msg_usage "${0##*/} {start|stop|reload|restart|condreload|condrestart|condstop}"
		RETVAL=1
esac

exit $RETVAL