random.h revision 268933 
1/*-
2 * Copyright (c) 2000-2013 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 * $FreeBSD: stable/10/sys/sys/random.h 268933 2014-07-21 00:21:56Z jhb $
27 */
28
29#ifndef	_SYS_RANDOM_H_
30#define	_SYS_RANDOM_H_
31
32#ifdef _KERNEL
33
34int read_random(void *, int);
35
36/*
37 * Note: if you add or remove members of esource, remember to also update the
38 * KASSERT regarding what valid members are in random_harvest_internal().
39 */
40enum esource {
41	RANDOM_START = 0,
42	RANDOM_CACHED = 0,
43	RANDOM_ATTACH,
44	RANDOM_KEYBOARD,
45	RANDOM_MOUSE,
46	RANDOM_NET_TUN,
47	RANDOM_NET_ETHER,
48	RANDOM_NET_NG,
49	RANDOM_INTERRUPT,
50	RANDOM_SWI,
51	RANDOM_PURE_OCTEON,
52	RANDOM_PURE_SAFE,
53	RANDOM_PURE_GLXSB,
54	RANDOM_PURE_UBSEC,
55	RANDOM_PURE_HIFN,
56	RANDOM_PURE_RDRAND,
57	RANDOM_PURE_NEHEMIAH,
58	RANDOM_PURE_RNDTEST,
59	RANDOM_PURE_VIRTIO,
60	ENTROPYSOURCE
61};
62void random_harvest(void *, u_int, u_int, enum esource);
63
64/* Allow the sysadmin to select the broad category of
65 * entropy types to harvest
66 */
67struct harvest_select {
68	int ethernet;
69	int point_to_point;
70	int interrupt;
71	int swi;
72	int namei;
73};
74
75extern struct harvest_select harvest;
76
77#endif /* _KERNEL */
78
79#endif /* _SYS_RANDOM_H_ */
80