1 /* 2 * Copyright (C) 2007-2010 Lawrence Livermore National Security, LLC. 3 * Copyright (C) 2007 The Regents of the University of California. 4 * Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER). 5 * Written by Brian Behlendorf <behlendorf1@llnl.gov>. 6 * UCRL-CODE-235197 7 * 8 * This file is part of the SPL, Solaris Porting Layer. 9 * 10 * The SPL is free software; you can redistribute it and/or modify it 11 * under the terms of the GNU General Public License as published by the 12 * Free Software Foundation; either version 2 of the License, or (at your 13 * option) any later version. 14 * 15 * The SPL is distributed in the hope that it will be useful, but WITHOUT 16 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 17 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 18 * for more details. 19 * 20 * You should have received a copy of the GNU General Public License along 21 * with the SPL. If not, see <http://www.gnu.org/licenses/>. 22 */ 23 24 #ifndef _SPL_RANDOM_H 25 #define _SPL_RANDOM_H 26 27 #include <linux/module.h> 28 #include <linux/random.h> 29 30 static __inline__ int 31 random_get_bytes(uint8_t *ptr, size_t len) 32 { 33 get_random_bytes((void *)ptr, (int)len); 34 return (0); 35 } 36 37 extern int random_get_pseudo_bytes(uint8_t *ptr, size_t len); 38 39 static __inline__ uint32_t 40 random_in_range(uint32_t range) 41 { 42 uint32_t r; 43 44 ASSERT(range != 0); 45 46 if (range == 1) 47 return (0); 48 49 (void) random_get_pseudo_bytes((uint8_t *)&r, sizeof (r)); 50 51 return (r % range); 52 } 53 54 #endif /* _SPL_RANDOM_H */ 55