1 /*- 2 * Copyright (c) 2015 Mark R V Murray 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer 10 * in this position and unchanged. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 /*- 30 * This is a skeleton for folks who wish to build a loadable module 31 * containing an alternative entropy-processing algorithm for random(4). 32 * 33 * The functions below should be completed with the appropriate code, 34 * and the nearby fortuna.c may be consulted for examples of working code. 35 * 36 * The author is willing to provide reasonable help to those wishing to 37 * write such a module for themselves. Please use the markm@ FreeBSD 38 * email address, and ensure that you are developing this on a suitably 39 * supported branch (This is currently 12-CURRENT, and may be no 40 * older than 12-STABLE in the future). 41 */ 42 43 #ifndef SYS_DEV_RANDOM_OTHER_H_INCLUDED 44 #define SYS_DEV_RANDOM_OTHER_H_INCLUDED 45 46 #ifdef _KERNEL 47 typedef struct mtx mtx_t; 48 #define RANDOM_RESEED_INIT_LOCK(x) mtx_init(&other_mtx, "reseed mutex", NULL, MTX_DEF) 49 #define RANDOM_RESEED_DEINIT_LOCK(x) mtx_destroy(&other_mtx) 50 #define RANDOM_RESEED_LOCK(x) mtx_lock(&other_mtx) 51 #define RANDOM_RESEED_UNLOCK(x) mtx_unlock(&other_mtx) 52 #define RANDOM_RESEED_ASSERT_LOCK_OWNED(x) mtx_assert(&other_mtx, MA_OWNED) 53 #else 54 #define RANDOM_RESEED_INIT_LOCK(x) mtx_init(&other_mtx, mtx_plain) 55 #define RANDOM_RESEED_DEINIT_LOCK(x) mtx_destroy(&other_mtx) 56 #define RANDOM_RESEED_LOCK(x) mtx_lock(&other_mtx) 57 #define RANDOM_RESEED_UNLOCK(x) mtx_unlock(&other_mtx) 58 #define RANDOM_RESEED_ASSERT_LOCK_OWNED(x) 59 #endif 60 61 #endif /* SYS_DEV_RANDOM_OTHER_H_INCLUDED */ 62