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/* $Id: tstRTMemWipe.cpp $ */
/** @file
* IPRT Testcase - RTMemWipe* functions.
*/
/*
* Copyright (C) 2012-2023 Oracle and/or its affiliates.
*
* This file is part of VirtualBox base platform packages, as
* available from https://www.virtualbox.org.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation, in version 3 of the
* License.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses>.
*
* The contents of this file may alternatively be used under the terms
* of the Common Development and Distribution License Version 1.0
* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
* in the VirtualBox 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.
*
* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
*/
/*********************************************************************************************************************************
* Header Files *
*********************************************************************************************************************************/
#include <iprt/path.h>
#include <iprt/rand.h>
#include <iprt/string.h>
#include <iprt/stream.h>
#include <iprt/initterm.h>
#include <iprt/mem.h>
#include <iprt/test.h>
/*********************************************************************************************************************************
* Global Variables *
*********************************************************************************************************************************/
static void doMemWipeThoroughly(RTTEST hTest)
{
for (uint32_t p = 0; p < RTRandU32Ex(1, 64); p++)
{
uint32_t cbAlloc = RTRandS32Ex(1, _1M) * sizeof(uint8_t);
RTTestPrintf(hTest, RTTESTLVL_ALWAYS, "Testing wipe #%.02RU32 (%u bytes) ...\n",
p + 1, cbAlloc);
void *pvBuf = RTMemAlloc(cbAlloc);
if (!pvBuf)
{
RTTestIFailed("No memory for first buffer (%z bytes)\n",
cbAlloc);
continue;
}
RTRandBytes(pvBuf, cbAlloc);
void *pvWipe = RTMemDup(pvBuf, cbAlloc);
if (!pvWipe)
{
RTMemFree(pvBuf);
RTTestIFailed("No memory for second buffer (%z bytes)\n",
cbAlloc);
continue;
}
uint32_t cbWipeRand = RTRandU32Ex(1, cbAlloc);
RTMemWipeThoroughly(pvWipe, RT_MIN(cbAlloc, cbWipeRand), p /* Passes */);
if (!memcmp(pvWipe, pvBuf, cbAlloc))
RTTestIFailed("Memory blocks must differ (%z bytes, 0x%p vs. 0x%p)!\n",
cbAlloc, pvWipe, pvBuf);
RTMemFree(pvWipe);
RTMemFree(pvBuf);
}
}
int main()
{
RTTEST hTest;
RTEXITCODE rcExit = RTTestInitAndCreate("memwipe", &hTest);
if (rcExit != RTEXITCODE_SUCCESS)
return rcExit;
RTTestBanner(hTest);
doMemWipeThoroughly(hTest);
return RTTestSummaryAndDestroy(hTest);
}
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