blob: 182c3d878f3294b3078bdd615f15ad849cf4b71e (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
|
/* $Id: RTMemWipeThoroughly.cpp $ */
/** @file
* IPRT - RTMemWipeThoroughly.
*/
/*
* Copyright (C) 2008-2019 Oracle Corporation
*
* This file is part of VirtualBox Open Source Edition (OSE), as
* available from http://www.virtualbox.org. This file is free software;
* you can redistribute it and/or modify it under the terms of the GNU
* General Public License (GPL) as published by the Free Software
* Foundation, in version 2 as it comes in the "COPYING" file of the
* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
* VirtualBox OSE distribution, in which case the provisions of the
* CDDL are applicable instead of those of the GPL.
*
* You may elect to license modified versions of this file under the
* terms and conditions of either the GPL or the CDDL or both.
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/mem.h>
#include "internal/iprt.h"
#include <iprt/asm.h>
#include <iprt/rand.h>
#include <iprt/string.h>
RTDECL(void) RTMemWipeThoroughly(void *pv, size_t cb, size_t cMinPasses) RT_NO_THROW_DEF
{
size_t cPasses = RT_MIN(cMinPasses, 6);
do
{
memset(pv, 0xff, cb);
ASMMemoryFence();
memset(pv, 0x00, cb);
ASMMemoryFence();
RTRandBytes(pv, cb);
ASMMemoryFence();
} while (cPasses-- > 0);
}
|
