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 * $FreeBSD$ 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 ENTROPYSOURCE 60 }; 61 void random_harvest(void *, u_int, u_int, enum esource); 62 63 /* Allow the sysadmin to select the broad category of 64 * entropy types to harvest 65 */ 66 struct harvest_select { 67 int ethernet; 68 int point_to_point; 69 int interrupt; 70 int swi; 71 int namei; 72 }; 73 74 extern struct harvest_select harvest; 75 76 #endif /* _KERNEL */ 77 78 #endif /* _SYS_RANDOM_H_ */ 79