1 files changed, 82 insertions, 0 deletions
diff --git a/src/VBox/Runtime/common/path/RTPathAbsExDup.cpp b/src/VBox/Runtime/common/path/RTPathAbsExDup.cpp
new file mode 100644
index 00000000..6d658092
--- /dev/null
+++ b/src/VBox/Runtime/common/path/RTPathAbsExDup.cpp
@@ -0,0 +1,82 @@
+/* $Id: RTPathAbsExDup.cpp $ */
+/** @file
+ * IPRT - RTPathAbsExDup
+ */
+
+/*
+ * Copyright (C) 2006-2023 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 "internal/iprt.h"
+#include <iprt/path.h>
+#include <iprt/errcore.h>
+#include <iprt/param.h>
+#include <iprt/string.h>
+
+
+
+RTDECL(char *) RTPathAbsExDup(const char *pszBase, const char *pszPath, uint32_t fFlags)
+{
+    unsigned    cTries    = 16;
+    size_t      cbAbsPath = RTPATH_MAX / 2;
+    for (;;)
+    {
+        char  *pszAbsPath = RTStrAlloc(cbAbsPath);
+        if (pszAbsPath)
+        {
+            size_t cbActual = cbAbsPath;
+            int rc = RTPathAbsEx(pszBase, pszPath, fFlags, pszAbsPath, &cbActual);
+            if (RT_SUCCESS(rc))
+            {
+                if (cbActual < cbAbsPath / 2)
+                    RTStrRealloc(&pszAbsPath, cbActual + 1);
+                return pszAbsPath;
+            }
+
+            RTStrFree(pszAbsPath);
+
+            if (rc != VERR_BUFFER_OVERFLOW)
+                break;
+
+            if (--cTries == 0)
+                break;
+
+            cbAbsPath = RT_MAX(RT_ALIGN_Z(cbActual + 16, 64), cbAbsPath + 256);
+        }
+        else
+            break;
+    }
+    return NULL;
+}
+