include/sys/random.h

   1 /*
   2  *  This file is part of the SPL: Solaris Porting Layer.
   3  *
   4  *  Copyright (c) 2008 Lawrence Livermore National Security, LLC.
   5  *  Produced at Lawrence Livermore National Laboratory
   6  *  Written by:
   7  *          Brian Behlendorf <behlendorf1@llnl.gov>,
   8  *          Herb Wartens <wartens2@llnl.gov>,
   9  *          Jim Garlick <garlick@llnl.gov>
  10  *  UCRL-CODE-235197
  11  *
  12  *  This is free software; you can redistribute it and/or modify it
  13  *  under the terms of the GNU General Public License as published by
  14  *  the Free Software Foundation; either version 2 of the License, or
  15  *  (at your option) any later version.
  16  *
  17  *  This is distributed in the hope that it will be useful, but WITHOUT
  18  *  ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  19  *  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  20  *  for more details.
  21  *
  22  *  You should have received a copy of the GNU General Public License along
  23  *  with this program; if not, write to the Free Software Foundation, Inc.,
  24  *  51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
  25  */
  26
  27 #ifndef _SPL_RANDOM_H
  28 #define _SPL_RANDOM_H
  29
  30 #ifdef  __cplusplus
  31 extern "C" {
  32 #endif
  33
  34 #include <linux/module.h>
  35 #include <linux/random.h>
  36
  37 /* FIXME:
  38  * Should add support for blocking in the future to
  39  * ensure that proper entopy is collected.  ZFS doesn't
  40  * use it at the moment so this is good enough for now.
  41  * Always will succeed by returning 0.
  42  */
  43 static __inline__ int
  44 random_get_bytes(uint8_t *ptr, size_t len)
  45 {
  46         ASSERT(len >= 0);
  47         get_random_bytes((void *)ptr,(int)len);
  48         return 0;
  49 }
  50
  51  /* Always will succeed by returning 0. */
  52 static __inline__ int
  53 random_get_pseudo_bytes(uint8_t *ptr, size_t len)
  54 {
  55         ASSERT(len >= 0);
  56         get_random_bytes((void *)ptr,(int)len);
  57         return 0;
  58 }
  59
  60 #ifdef  __cplusplus
  61 }
  62 #endif
  63
  64 #endif  /* _SPL_RANDOM_H */