59 lines
2.3 KiB
C
59 lines
2.3 KiB
C
/* $NetBSD: rnd_private.h,v 1.1 2011/11/29 03:50:31 tls Exp $ */
|
|
|
|
/*-
|
|
* Copyright (c) 1997 The NetBSD Foundation, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
|
* by Michael Graff <explorer@flame.org>. This code uses ideas and
|
|
* algorithms from the Linux driver written by Ted Ts'o.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in the
|
|
* documentation and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
|
|
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
|
|
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
|
|
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
|
* POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#ifndef _DEV_RNDPRIVATE_H
|
|
#define _DEV_RNDPRIVATE_H
|
|
/*
|
|
* Number of bytes returned per hash. This value is used in both
|
|
* rnd.c and rndpool.c to decide when enough entropy exists to do a
|
|
* hash to extract it.
|
|
*/
|
|
#define RND_ENTROPY_THRESHOLD 10
|
|
|
|
/*
|
|
* Size of the event queue. This _MUST_ be a power of 2.
|
|
*/
|
|
#ifndef RND_EVENTQSIZE
|
|
#define RND_EVENTQSIZE 128
|
|
#endif
|
|
|
|
/*
|
|
* Used by rnd_extract_data() and rndpool_extract_data() to describe how
|
|
* "good" the data has to be.
|
|
*/
|
|
#define RND_EXTRACT_ANY 0 /* extract anything, even if no entropy */
|
|
#define RND_EXTRACT_GOOD 1 /* return as many good bytes
|
|
(short read ok) */
|
|
|
|
uint32_t rnd_extract_data(void *, uint32_t, uint32_t);
|
|
#endif
|