Index: /trunk/src/VBox/Runtime/generic/RTDirCreateTemp-generic.cpp
===================================================================
--- /trunk/src/VBox/Runtime/generic/RTDirCreateTemp-generic.cpp	(revision 20104)
+++ /trunk/src/VBox/Runtime/generic/RTDirCreateTemp-generic.cpp	(revision 20104)
@@ -0,0 +1,87 @@
+/* $Id$ */
+/** @file
+ * IPRT - RTDirCreateTemp, generic implementation.
+ */
+
+/*
+ * Copyright (C) 2009 Sun Microsystems, Inc.
+ *
+ * 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.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
+ * Clara, CA 95054 USA or visit http://www.sun.com if you need
+ * additional information or have any questions.
+ */
+
+
+/*******************************************************************************
+*   Header Files                                                               *
+*******************************************************************************/
+#include <iprt/dir.h>
+
+#include <iprt/assert.h>
+#include <iprt/err.h>
+#include <iprt/rand.h>
+#include <iprt/string.h>
+
+
+RTDECL(int) RTDirCreateTemp(char *pszTemplate)
+{
+    /*
+     * Validate input.
+     */
+    AssertPtr(pszTemplate);
+    unsigned    cXes = 0;
+    char       *pszX = strchr(pszTemplate, '\0');
+    while (pszX != pszTemplate && pszX[-1] == 'X')
+    {
+        pszX--;
+        cXes++;
+    }
+    if (!cXes)
+    {
+        AssertFailed();
+        *pszTemplate = '\0';
+        return VERR_INVALID_PARAMETER;
+    }
+
+    /*
+     * Try ten thousand times.
+     */
+    int i = 10000;
+    while (i-- > 0)
+    {
+        static char const s_sz[] = "0123456789abcdefghijklmnopqrstuvwxyz";
+        unsigned j = cXes;
+        while (j-- > 0)
+            pszX[j] = s_sz[RTRandU32Ex(0, RT_ELEMENTS(s_sz) - 1)];
+        int rc = RTDirCreate(pszTemplate, 0700);
+        if (RT_SUCCESS(rc))
+            return rc;
+        if (rc != VERR_ALREADY_EXISTS)
+        {
+            *pszTemplate = '\0';
+            return rc;
+        }
+    }
+
+    /* we've given up. */
+    *pszTemplate = '\0';
+    return VERR_ALREADY_EXISTS;
+}
+