#!/bin/sh
#
# rng-tools	initscript for the rng-tools package
#		Copr. 2003 by Henrique de Moraes Holschuh <hmh@debian.org>
#		Copr. 2002 by Viral Shah <viral@debian.org>
#
# $Id: rng-tools.init,v 1.6.2.5.2.4 2005/05/11 09:29:26 hmh Exp $
# 
# chkconfig: 2345 34 66
# description:  Hardware RNG entropy gatherer daemon

WITHOUT_RC_COMPAT=1

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

HRNGDEVICE=/dev/hwrng
RNGDOPTIONS=
DESC="Hardware RNG entropy gatherer daemon"

SourceIfNotEmpty /etc/sysconfig/rngd

DAEMON=/usr/sbin/rngd
NAME=rngd
PIDFILE=/var/run/rngd.pid
LOCKFILE=/var/lock/subsys/rngd

DEVICELIST="hwrng hw_random hwrandom intel_rng i810_rng"

[ -f ${DAEMON} ] || exit 0

finddevice () {
	[ -c "$HRNGDEVICE" ] && return 0
	for i in $DEVICELIST ; do
		if [ -c "/dev/$i" ] ; then
			HRNGDEVICE="/dev/$i"
			return 0
		fi
		if [ -c "/dev/misc/$i" ] ; then
			HRNGDEVICE="/dev/misc/$i"
			return 0
		fi
	done

	echo "(Hardware RNG device inode not found)"
	echo "$0: Cannot find a hardware RNG device to use." >&2
	exit 1
}

start()
{
	finddevice
	start_daemon --pidfile "$PIDFILE" --make-pidfile --lockfile "$LOCKFILE" --name "$NAME" -- rngd -f -r "$HRNGDEVICE" "$RNGDOPTIONS"
	RETVAL=$?
}

stop()
{
	stop_daemon --pidfile "$PIDFILE" --lockfile "$LOCKFILE" --name "$NAME" -- rngd
	RETVAL=$?
}

restart()
{
	stop
	start
}

case "$1" in
  start)
	start
	;;
  stop)
	stop
	;;
  restart|reload)
	restart
	;;
  condstop)
	if [ -e "$LOCKFILE" ]; then
		stop
	fi
	;;
  condrestart)
	if [ -e "$LOCKFILE" ]; then
		restart
	fi
	;;
  status)
	status --pidfile "$PIDFILE" --expect-user root rngd
	;;
  *)
	echo "Usage: ${0##*/} {start|stop|reload|restart|condstop|condrestart|status}"
	RETVAL=1
esac

exit $RETVAL