FreeBSD/Linux Kernel Cross Reference
sys/sys/random.h
1 /*-
2 * Copyright (c) 2000 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/8.0/sys/sys/random.h 136433 2004-10-12 14:55:59Z rwatson $
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_WRITE = 0,
43 RANDOM_KEYBOARD,
44 RANDOM_MOUSE,
45 RANDOM_NET,
46 RANDOM_INTERRUPT,
47 RANDOM_PURE,
48 ENTROPYSOURCE
49 };
50 void random_harvest(void *, u_int, u_int, u_int, enum esource);
51
52 /* Allow the sysadmin to select the broad category of
53 * entropy types to harvest
54 */
55 struct harvest_select {
56 int ethernet;
57 int point_to_point;
58 int interrupt;
59 int swi;
60 };
61
62 extern struct harvest_select harvest;
63
64 #endif /* _KERNEL */
65
66 #endif /* _SYS_RANDOM_H_ */
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