| 1 | /* $Id: tstRTMemWipe.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT Testcase - RTMemWipe* functions.
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2012-2020 Oracle Corporation
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| 8 | *
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| 9 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 10 | * available from http://www.virtualbox.org. This file is free software;
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| 11 | * you can redistribute it and/or modify it under the terms of the GNU
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| 12 | * General Public License (GPL) as published by the Free Software
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| 13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 16 | *
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| 17 | * The contents of this file may alternatively be used under the terms
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| 18 | * of the Common Development and Distribution License Version 1.0
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| 19 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 20 | * VirtualBox OSE distribution, in which case the provisions of the
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| 21 | * CDDL are applicable instead of those of the GPL.
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| 22 | *
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| 23 | * You may elect to license modified versions of this file under the
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| 24 | * terms and conditions of either the GPL or the CDDL or both.
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| 25 | */
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| 26 |
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| 27 |
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| 28 | /*********************************************************************************************************************************
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| 29 | * Header Files *
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| 30 | *********************************************************************************************************************************/
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| 31 | #include <iprt/path.h>
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| 32 | #include <iprt/rand.h>
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| 33 | #include <iprt/string.h>
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| 34 | #include <iprt/stream.h>
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| 35 | #include <iprt/initterm.h>
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| 36 | #include <iprt/mem.h>
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| 37 | #include <iprt/test.h>
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| 38 |
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| 39 |
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| 40 | /*********************************************************************************************************************************
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| 41 | * Global Variables *
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| 42 | *********************************************************************************************************************************/
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| 43 |
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| 44 | static void doMemWipeThoroughly(RTTEST hTest)
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| 45 | {
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| 46 | for (uint32_t p = 0; p < RTRandU32Ex(1, 64); p++)
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| 47 | {
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| 48 | uint32_t cbAlloc = RTRandS32Ex(1, _1M) * sizeof(uint8_t);
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| 49 |
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| 50 | RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Testing wipe #%.02RU32 (%u bytes) ...\n",
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| 51 | p + 1, cbAlloc);
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| 52 |
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| 53 | void *pvBuf = RTMemAlloc(cbAlloc);
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| 54 | if (!pvBuf)
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| 55 | {
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| 56 | RTTestIFailed("No memory for first buffer (%z bytes)\n",
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| 57 | cbAlloc);
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| 58 | continue;
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| 59 | }
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| 60 | RTRandBytes(pvBuf, cbAlloc);
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| 61 |
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| 62 | void *pvWipe = RTMemDup(pvBuf, cbAlloc);
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| 63 | if (!pvWipe)
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| 64 | {
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| 65 | RTMemFree(pvBuf);
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| 66 |
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| 67 | RTTestIFailed("No memory for second buffer (%z bytes)\n",
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| 68 | cbAlloc);
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| 69 | continue;
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| 70 | }
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| 71 | uint32_t cbWipeRand = RTRandU32Ex(1, cbAlloc);
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| 72 | RTMemWipeThoroughly(pvWipe, RT_MIN(cbAlloc, cbWipeRand), p /* Passes */);
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| 73 | if (!memcmp(pvWipe, pvBuf, cbAlloc))
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| 74 | RTTestIFailed("Memory blocks must differ (%z bytes, 0x%p vs. 0x%p)!\n",
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| 75 | cbAlloc, pvWipe, pvBuf);
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| 76 |
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| 77 | RTMemFree(pvWipe);
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| 78 | RTMemFree(pvBuf);
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| 79 | }
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| 80 | }
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| 81 |
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| 82 | int main()
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| 83 | {
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| 84 | RTTEST hTest;
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| 85 | RTEXITCODE rcExit = RTTestInitAndCreate("memwipe", &hTest);
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| 86 | if (rcExit != RTEXITCODE_SUCCESS)
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| 87 | return rcExit;
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| 88 | RTTestBanner(hTest);
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| 89 |
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| 90 | doMemWipeThoroughly(hTest);
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| 91 |
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| 92 | return RTTestSummaryAndDestroy(hTest);
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| 93 | }
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| 94 |
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