1/*
2 *  Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC.
3 *  Copyright (C) 2007 The Regents of the University of California.
4 *  Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
5 *  Written by Brian Behlendorf <behlendorf1@llnl.gov>.
6 *  UCRL-CODE-235197
7 *
8 *  This file is part of the SPL, Solaris Porting Layer.
9 *
10 *  The SPL is free software; you can redistribute it and/or modify it
11 *  under the terms of the GNU General Public License as published by the
12 *  Free Software Foundation; either version 2 of the License, or (at your
13 *  option) any later version.
14 *
15 *  The SPL is distributed in the hope that it will be useful, but WITHOUT
16 *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
18 *  for more details.
19 *
20 *  You should have received a copy of the GNU General Public License along
21 *  with the SPL.  If not, see <http://www.gnu.org/licenses/>.
22 */
23
24#ifndef _SPL_RANDOM_H
25#define	_SPL_RANDOM_H
26
27#include <linux/module.h>
28#include <linux/random.h>
29
30static __inline__ int
31random_get_bytes(uint8_t *ptr, size_t len)
32{
33	get_random_bytes((void *)ptr, (int)len);
34	return (0);
35}
36
37extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len);
38
39static __inline__ uint32_t
40random_in_range(uint32_t range)
41{
42	uint32_t r;
43
44	ASSERT(range != 0);
45
46	if (range == 1)
47		return (0);
48
49	(void) random_get_pseudo_bytes((uint8_t *)&r, sizeof (r));
50
51	return (r % range);
52}
53
54#endif	/* _SPL_RANDOM_H */
55