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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