1 files changed, 94 insertions, 0 deletions
diff --git a/src/VBox/Runtime/testcase/tstRTMemWipe.cpp b/src/VBox/Runtime/testcase/tstRTMemWipe.cpp
new file mode 100644
index 00000000..b259f5e7
--- /dev/null
+++ b/src/VBox/Runtime/testcase/tstRTMemWipe.cpp
@@ -0,0 +1,94 @@
+/* $Id: tstRTMemWipe.cpp $ */
+/** @file
+ * IPRT Testcase - RTMemWipe* functions.
+ */
+
+/*
+ * Copyright (C) 2012-2019 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/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);
+}
+