projects / apple / xnu.git / blame
| Commit | Line | Data |
|---|---|---|
| 1c79356b | 1 | /* |
| 5d5c5d0d A |
2 | * Copyright (c) 1999, 2000-2001 Apple Computer, Inc. All rights reserved. |
| 3 | * | |
| 8ad349bb | 4 | * @APPLE_LICENSE_OSREFERENCE_HEADER_START@ |
| 1c79356b | 5 | * |
| 8ad349bb A |
6 | * This file contains Original Code and/or Modifications of Original Code |
| 7 | * as defined in and that are subject to the Apple Public Source License | |
| 8 | * Version 2.0 (the 'License'). You may not use this file except in | |
| 9 | * compliance with the License. The rights granted to you under the | |
| 10 | * License may not be used to create, or enable the creation or | |
| 11 | * redistribution of, unlawful or unlicensed copies of an Apple operating | |
| 12 | * system, or to circumvent, violate, or enable the circumvention or | |
| 13 | * violation of, any terms of an Apple operating system software license | |
| 14 | * agreement. | |
| 15 | * | |
| 16 | * Please obtain a copy of the License at | |
| 17 | * http://www.opensource.apple.com/apsl/ and read it before using this | |
| 18 | * file. | |
| 19 | * | |
| 20 | * The Original Code and all software distributed under the License are | |
| 21 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
| 22 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, | |
| 23 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
| 24 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. | |
| 25 | * Please see the License for the specific language governing rights and | |
| 26 | * limitations under the License. | |
| 27 | * | |
| 28 | * @APPLE_LICENSE_OSREFERENCE_HEADER_END@ | |
| 1c79356b | 29 | */ |
| 1c79356b | 30 | |
| 0b4e3aa0 A |
31 | /* |
| 32 | File: yarrowUtils.c | |
| 1c79356b | 33 | |
| 0b4e3aa0 | 34 | Contains: Misc. utility functions. |
| 1c79356b | 35 | |
| 0b4e3aa0 | 36 | Written by: Doug Mitchell |
| 1c79356b | 37 | |
| 0b4e3aa0 | 38 | Copyright: (c) 2000 by Apple Computer, Inc., all rights reserved. |
| 1c79356b | 39 | |
| 0b4e3aa0 | 40 | Change History (most recent first): |
| 1c79356b | 41 | |
| 0b4e3aa0 A |
42 | 02/29/00 dpm Created. |
| 43 | ||
| 44 | */ | |
| 1c79356b | 45 | |
| 0b4e3aa0 | 46 | #include "dev/random/YarrowCoreLib/include/yarrowUtils.h" |
| 91447636 | 47 | #include <string.h> |
| 1c79356b | 48 | |
| 0b4e3aa0 A |
49 | void |
| 50 | trashMemory(void* mem, int len) | |
| 51 | /* This function should only be used on data in RAM */ | |
| 52 | { | |
| 53 | if(len == 0) { | |
| 54 | /* some memsets really don't like this */ | |
| 55 | return; | |
| 56 | } | |
| 57 | ||
| 58 | /* Cycle a bit just in case it is one of those weird memory units */ | |
| 59 | /* No, I don't know which units those would be */ | |
| 60 | memset(mem,0x00,len); | |
| 61 | memset(mem,0xFF,len); | |
| 62 | memset(mem,0x00,len); | |
| 1c79356b | 63 | } |
| 0b4e3aa0 | 64 | |
| 1c79356b | 65 |