71 lines
2.1 KiB
C
71 lines
2.1 KiB
C
/*
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* Copyright (c) 2007 Pawel Jakub Dawidek <pjd@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef _OPENSOLARIS_SYS_RANDOM_H_
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#define _OPENSOLARIS_SYS_RANDOM_H_
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#include_next <sys/random.h>
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#if __FreeBSD_version >= 1300108
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#include <sys/prng.h>
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#endif
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static inline int
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random_get_bytes(uint8_t *p, size_t s)
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{
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arc4rand(p, (int)s, 0);
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return (0);
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}
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static inline int
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random_get_pseudo_bytes(uint8_t *p, size_t s)
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{
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arc4rand(p, (int)s, 0);
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return (0);
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}
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static inline uint32_t
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random_in_range(uint32_t range)
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{
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#if defined(_KERNEL) && __FreeBSD_version >= 1300108
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return (prng32_bounded(range));
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#else
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uint32_t r;
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ASSERT(range != 0);
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if (range == 1)
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return (0);
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(void) random_get_pseudo_bytes((uint8_t *)&r, sizeof (r));
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return (r % range);
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#endif
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}
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#endif /* !_OPENSOLARIS_SYS_RANDOM_H_ */
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