random.h revision 72667 
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: head/sys/sys/random.h 72667 2001-02-18 17:40:47Z markm $
27 */
28
29#ifndef	_SYS_RANDOM_H_
30#define	_SYS_RANDOM_H_
31
32#ifdef _KERNEL
33
34u_int read_random(void *, u_int);
35
36enum esource { RANDOM_WRITE, RANDOM_KEYBOARD, RANDOM_MOUSE, RANDOM_NET,
37		RANDOM_INTERRUPT, ENTROPYSOURCE };
38void random_harvest(void *, u_int, u_int, u_int, enum esource);
39
40/* Allow the sysadmin to select the broad category of
41 * entropy types to harvest
42 */
43struct harvest_select {
44	int ethernet;
45	int point_to_point;
46	int interrupt;
47};
48
49extern struct harvest_select harvest;
50
51#endif
52
53#endif /* _SYS_RANDOM_H_ */
54