| 1 | /* $NetBSD: rnd_private.h,v 1.11 2015/04/14 13:14:20 riastradh Exp $ */ |
| 2 | |
| 3 | /*- |
| 4 | * Copyright (c) 1997 The NetBSD Foundation, Inc. |
| 5 | * All rights reserved. |
| 6 | * |
| 7 | * This code is derived from software contributed to The NetBSD Foundation |
| 8 | * by Michael Graff <explorer@flame.org>. This code uses ideas and |
| 9 | * algorithms from the Linux driver written by Ted Ts'o. |
| 10 | * |
| 11 | * Redistribution and use in source and binary forms, with or without |
| 12 | * modification, are permitted provided that the following conditions |
| 13 | * are met: |
| 14 | * 1. Redistributions of source code must retain the above copyright |
| 15 | * notice, this list of conditions and the following disclaimer. |
| 16 | * 2. Redistributions in binary form must reproduce the above copyright |
| 17 | * notice, this list of conditions and the following disclaimer in the |
| 18 | * documentation and/or other materials provided with the distribution. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
| 21 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
| 22 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
| 24 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 25 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 26 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 27 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 28 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 29 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 30 | * POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | #ifndef _DEV_RNDPRIVATE_H |
| 34 | #define _DEV_RNDPRIVATE_H |
| 35 | |
| 36 | #include <sys/types.h> |
| 37 | #include <sys/mutex.h> |
| 38 | #include <sys/queue.h> |
| 39 | #include <sys/rndio.h> |
| 40 | #include <sys/rndpool.h> |
| 41 | #include <sys/rndsource.h> |
| 42 | |
| 43 | /* |
| 44 | * Number of bytes returned per hash. This value is used in both |
| 45 | * rnd.c and rndpool.c to decide when enough entropy exists to do a |
| 46 | * hash to extract it. |
| 47 | */ |
| 48 | #define RND_ENTROPY_THRESHOLD 10 |
| 49 | |
| 50 | bool (void *, size_t); |
| 51 | bool (void *, size_t); |
| 52 | void rnd_getmore(size_t); |
| 53 | |
| 54 | /* |
| 55 | * Flag indicating rnd_init has run. |
| 56 | */ |
| 57 | extern int rnd_ready; |
| 58 | |
| 59 | /* |
| 60 | * Debugging flags. |
| 61 | */ |
| 62 | #ifdef RND_DEBUG |
| 63 | extern int rnd_debug; |
| 64 | #define RND_DEBUG_WRITE 0x0001 |
| 65 | #define RND_DEBUG_READ 0x0002 |
| 66 | #define RND_DEBUG_IOCTL 0x0004 |
| 67 | #define RND_DEBUG_SNOOZE 0x0008 |
| 68 | #endif |
| 69 | |
| 70 | #endif /* _DEV_RNDPRIVATE_H */ |
| 71 | |