1 /* 2 * Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org> 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 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #ifndef _OPENSOLARIS_SYS_RANDOM_H_ 30 #define _OPENSOLARIS_SYS_RANDOM_H_ 31 32 #include_next <sys/random.h> 33 #if __FreeBSD_version >= 1300108 34 #include <sys/prng.h> 35 #endif 36 37 static inline int 38 random_get_bytes(uint8_t *p, size_t s) 39 { 40 arc4rand(p, (int)s, 0); 41 return (0); 42 } 43 44 static inline int 45 random_get_pseudo_bytes(uint8_t *p, size_t s) 46 { 47 arc4rand(p, (int)s, 0); 48 return (0); 49 } 50 51 static inline uint32_t 52 random_in_range(uint32_t range) 53 { 54 #if defined(_KERNEL) && __FreeBSD_version >= 1300108 55 return (prng32_bounded(range)); 56 #else 57 uint32_t r; 58 59 ASSERT(range != 0); 60 61 if (range == 1) 62 return (0); 63 64 (void) random_get_pseudo_bytes((uint8_t *)&r, sizeof (r)); 65 66 return (r % range); 67 #endif 68 } 69 70 #endif /* !_OPENSOLARIS_SYS_RANDOM_H_ */ 71