0a6a1f1d05
This brings our tree to NetBSD 7.0, as found on -current on the 10-10-2015. This updates: - LLVM to 3.6.1 - GCC to GCC 5.1 - Replace minix/commands/zdump with usr.bin/zdump - external/bsd/libelf has moved to /external/bsd/elftoolchain/ - Import ctwm - Drop sprintf from libminc Change-Id: I149836ac18e9326be9353958bab9b266efb056f0
73 lines
2.9 KiB
C
73 lines
2.9 KiB
C
/* $NetBSD: rndpool.h,v 1.3 2015/04/14 13:14:20 riastradh Exp $ */
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/*-
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* Copyright (c) 1997 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Michael Graff <explorer@flame.org>. This code uses ideas and
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* algorithms from the Linux driver written by Ted Ts'o.
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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 NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _SYS_RNDPOOL_H
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#define _SYS_RNDPOOL_H
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#ifndef _KERNEL /* XXX */
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#error <sys/rndpool.h> is meant for kernel consumers only.
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#endif
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#include <sys/types.h>
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#include <sys/rndio.h> /* rndpoolstat_t */
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/*
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* Size of entropy pool in 32-bit words. This _MUST_ be a power of 2. Don't
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* change this unless you really know what you are doing...
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*/
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#ifndef RND_POOLWORDS
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#define RND_POOLWORDS 128
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#endif
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#define RND_POOLBITS (RND_POOLWORDS * 32)
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typedef struct {
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uint32_t cursor; /* current add point in the pool */
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uint32_t rotate; /* how many bits to rotate by */
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rndpoolstat_t stats; /* current statistics */
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uint32_t pool[RND_POOLWORDS]; /* random pool data */
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} rndpool_t;
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/* Mode for rnd_extract_data. */
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#define RND_EXTRACT_ANY 0 /* extract as many bits as requested */
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#define RND_EXTRACT_GOOD 1 /* extract as many bits as we have counted
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* entropy */
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void rndpool_init(rndpool_t *);
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uint32_t rndpool_get_entropy_count(rndpool_t *);
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void rndpool_set_entropy_count(rndpool_t *, uint32_t);
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void rndpool_get_stats(rndpool_t *, void *, int);
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void rndpool_add_data(rndpool_t *,
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const void *const , uint32_t, uint32_t);
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uint32_t rndpool_extract_data(rndpool_t *, void *, uint32_t, uint32_t);
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#endif /* _SYS_RNDPOOL_H */
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