random.h revision 104479
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 104479 2002-10-04 20:34:08Z sam $ 27 */ 28 29#ifndef _SYS_RANDOM_H_ 30#define _SYS_RANDOM_H_ 31 32#ifdef _KERNEL 33 34int read_random(void *, int); 35 36enum esource { 37 RANDOM_START = 0, 38 RANDOM_WRITE = 0, 39 RANDOM_KEYBOARD, 40 RANDOM_MOUSE, 41 RANDOM_NET, 42 RANDOM_INTERRUPT, 43 RANDOM_PURE, 44 ENTROPYSOURCE 45}; 46void random_harvest(void *, u_int, u_int, u_int, enum esource); 47 48/* Allow the sysadmin to select the broad category of 49 * entropy types to harvest 50 */ 51struct harvest_select { 52 int ethernet; 53 int point_to_point; 54 int interrupt; 55 int swi; 56}; 57 58extern struct harvest_select harvest; 59 60#endif /* _KERNEL */ 61 62#endif /* _SYS_RANDOM_H_ */ 63