FreeBSD/Linux Kernel Cross Reference
sys/sys/random.h
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: releng/10.2/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
34 int 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 */
40 enum 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 };
62 void 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 */
67 struct harvest_select {
68 int ethernet;
69 int point_to_point;
70 int interrupt;
71 int swi;
72 int namei;
73 };
74
75 extern struct harvest_select harvest;
76
77 #endif /* _KERNEL */
78
79 #endif /* _SYS_RANDOM_H_ */
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