projects / apple / network_cmds.git / blame
| Commit | Line | Data |
|---|---|---|
| 89c4ed63 A |
1 | /* arc4_lock.c - global lock for arc4random |
| 2 | * | |
| 3 | * Copyright (c) 2014, NLnet Labs. All rights reserved. | |
| 4 | * | |
| 5 | * This software is open source. | |
| 6 | * | |
| 7 | * Redistribution and use in source and binary forms, with or without | |
| 8 | * modification, are permitted provided that the following conditions | |
| 9 | * are met: | |
| 10 | * | |
| 11 | * Redistributions of source code must retain the above copyright notice, | |
| 12 | * this list of conditions and the following disclaimer. | |
| 13 | * | |
| 14 | * Redistributions in binary form must reproduce the above copyright notice, | |
| 15 | * this list of conditions and the following disclaimer in the documentation | |
| 16 | * and/or other materials provided with the distribution. | |
| 17 | * | |
| 18 | * Neither the name of the NLNET LABS nor the names of its contributors may | |
| 19 | * be used to endorse or promote products derived from this software without | |
| 20 | * specific prior written permission. | |
| 21 | * | |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 23 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 24 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 25 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 26 | * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 27 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED | |
| 28 | * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR | |
| 29 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF | |
| 30 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING | |
| 31 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS | |
| 32 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 33 | */ | |
| 34 | #include "config.h" | |
| 35 | #define LOCKRET(func) func | |
| 36 | #include "util/locks.h" | |
| 37 | ||
| 38 | void _ARC4_LOCK(void); | |
| 39 | void _ARC4_UNLOCK(void); | |
| 40 | ||
| 41 | #ifdef THREADS_DISABLED | |
| 42 | void _ARC4_LOCK(void) | |
| 43 | { | |
| 44 | } | |
| 45 | ||
| 46 | void _ARC4_UNLOCK(void) | |
| 47 | { | |
| 48 | } | |
| 49 | #else /* !THREADS_DISABLED */ | |
| 50 | ||
| 51 | static lock_quick_t arc4lock; | |
| 52 | static int arc4lockinit = 0; | |
| 53 | ||
| 54 | void _ARC4_LOCK(void) | |
| 55 | { | |
| 56 | if(!arc4lockinit) { | |
| 57 | arc4lockinit = 1; | |
| 58 | lock_quick_init(&arc4lock); | |
| 59 | } | |
| 60 | lock_quick_lock(&arc4lock); | |
| 61 | } | |
| 62 | ||
| 63 | void _ARC4_UNLOCK(void) | |
| 64 | { | |
| 65 | lock_quick_unlock(&arc4lock); | |
| 66 | } | |
| 67 | #endif /* THREADS_DISABLED */ |