1/*-
2 * Copyright (c) 2015 Mark R V Murray
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 *    notice, this list of conditions and the following disclaimer
10 *    in this position and unchanged.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 *    notice, this list of conditions and the following disclaimer in the
13 *    documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27/*-
28 * This is a skeleton for folks who wish to build a loadable module
29 * containing an alternative entropy-processing algorithm for random(4).
30 *
31 * The functions below should be completed with the appropriate code,
32 * and the nearby fortuna.c may be consulted for examples of working code.
33 *
34 * The author is willing to provide reasonable help to those wishing to
35 * write such a module for themselves. Please use the markm@ FreeBSD
36 * email address, and ensure that you are developing this on a suitably
37 * supported branch (This is currently 12-CURRENT, and may be no
38 * older than 12-STABLE in the future).
39 */
40
41#ifndef SYS_DEV_RANDOM_OTHER_H_INCLUDED
42#define	SYS_DEV_RANDOM_OTHER_H_INCLUDED
43
44#ifdef _KERNEL
45typedef struct mtx mtx_t;
46#define	RANDOM_RESEED_INIT_LOCK(x)		mtx_init(&other_mtx, "reseed mutex", NULL, MTX_DEF)
47#define	RANDOM_RESEED_DEINIT_LOCK(x)		mtx_destroy(&other_mtx)
48#define	RANDOM_RESEED_LOCK(x)			mtx_lock(&other_mtx)
49#define	RANDOM_RESEED_UNLOCK(x)			mtx_unlock(&other_mtx)
50#define	RANDOM_RESEED_ASSERT_LOCK_OWNED(x)	mtx_assert(&other_mtx, MA_OWNED)
51#else
52#define	RANDOM_RESEED_INIT_LOCK(x)		mtx_init(&other_mtx, mtx_plain)
53#define	RANDOM_RESEED_DEINIT_LOCK(x)		mtx_destroy(&other_mtx)
54#define	RANDOM_RESEED_LOCK(x)			mtx_lock(&other_mtx)
55#define	RANDOM_RESEED_UNLOCK(x)			mtx_unlock(&other_mtx)
56#define	RANDOM_RESEED_ASSERT_LOCK_OWNED(x)
57#endif
58
59#endif /* SYS_DEV_RANDOM_OTHER_H_INCLUDED */
60