root / lab4 / .minix-src / include / sys / rnd.h @ 14
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| 1 | 13 | up20180614 | /* $NetBSD: rnd.h,v 1.49 2015/04/14 12:51:30 riastradh Exp $ */
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| 2 | |||
| 3 | /*-
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| 4 | * Copyright (c) 1997 The NetBSD Foundation, Inc.
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| 5 | * All rights reserved.
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| 6 | *
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| 7 | * This code is derived from software contributed to The NetBSD Foundation
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| 8 | * by Michael Graff <explorer@flame.org>. This code uses ideas and
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| 9 | * algorithms from the Linux driver written by Ted Ts'o.
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| 10 | *
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| 11 | * Redistribution and use in source and binary forms, with or without
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| 12 | * modification, are permitted provided that the following conditions
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| 13 | * are met:
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| 14 | * 1. Redistributions of source code must retain the above copyright
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| 15 | * notice, this list of conditions and the following disclaimer.
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| 16 | * 2. Redistributions in binary form must reproduce the above copyright
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| 17 | * notice, this list of conditions and the following disclaimer in the
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| 18 | * documentation and/or other materials provided with the distribution.
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| 19 | *
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| 20 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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| 22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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| 23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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| 24 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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| 30 | * POSSIBILITY OF SUCH DAMAGE.
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| 31 | */
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| 32 | |||
| 33 | #ifndef _SYS_RND_H_
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| 34 | #define _SYS_RND_H_
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| 35 | |||
| 36 | #ifdef _KERNEL
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| 37 | |||
| 38 | #include <sys/types.h> |
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| 39 | |||
| 40 | struct file;
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| 41 | |||
| 42 | #define RND_DEV_RANDOM 0 /* minor for blocking until unpredictable */ |
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| 43 | #define RND_DEV_URANDOM 1 /* minor for randomly generating data */ |
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| 44 | |||
| 45 | void rnd_init(void); |
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| 46 | void rnd_init_softint(void); |
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| 47 | void rnd_seed(void *, size_t); |
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| 48 | int rnd_system_ioctl(struct file *, u_long, void *); |
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| 49 | |||
| 50 | extern int rnd_initial_entropy; |
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| 51 | |||
| 52 | #endif /* _KERNEL */ |
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| 53 | |||
| 54 | #endif /* !_SYS_RND_H_ */ |