1 files changed, 97 insertions, 0 deletions
diff --git a/src/VBox/Runtime/generic/RTPathIsSame-generic.cpp b/src/VBox/Runtime/generic/RTPathIsSame-generic.cpp
new file mode 100644
index 00000000..0324d3da
--- /dev/null
+++ b/src/VBox/Runtime/generic/RTPathIsSame-generic.cpp
@@ -0,0 +1,97 @@
+/* $Id: RTPathIsSame-generic.cpp $ */
+/** @file
+ * IPRT - Assertions, generic RTPathIsSame.
+ */
+
+/*
+ * Copyright (C) 2013-2020 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 "internal/iprt.h"
+
+#include <iprt/err.h>
+#include <iprt/string.h>
+
+
+RTDECL(int) RTPathIsSame(const char *pszPath1, const char *pszPath2)
+{
+    /*
+     * Simple checks based on the path values.
+     */
+    if (pszPath1 == pszPath2)
+        return true;
+    if (!pszPath1)
+        return false;
+    if (!pszPath2)
+        return false;
+    if (!strcmp(pszPath1, pszPath2))
+        return true;
+
+    /*
+     * If the files exist, try use the attributes.
+     */
+    RTFSOBJINFO ObjInfo1;
+    int rc = RTPathQueryInfoEx(pszPath1, &ObjInfo1, RTFSOBJATTRADD_UNIX, RTPATH_F_ON_LINK);
+    if (RT_SUCCESS(rc))
+    {
+        RTFSOBJINFO ObjInfo2;
+        rc = RTPathQueryInfoEx(pszPath2, &ObjInfo2, RTFSOBJATTRADD_UNIX, RTPATH_F_ON_LINK);
+        if (RT_SUCCESS(rc))
+        {
+            if ((ObjInfo1.Attr.fMode & RTFS_TYPE_MASK) != (ObjInfo2.Attr.fMode & RTFS_TYPE_MASK))
+                return false;
+            if (ObjInfo1.Attr.u.Unix.INodeIdDevice       != ObjInfo2.Attr.u.Unix.INodeIdDevice)
+                return false;
+            if (ObjInfo1.Attr.u.Unix.INodeId             != ObjInfo2.Attr.u.Unix.INodeId)
+                return false;
+            if (ObjInfo1.Attr.u.Unix.GenerationId        != ObjInfo2.Attr.u.Unix.GenerationId)
+                return false;
+            if (   ObjInfo1.Attr.u.Unix.INodeIdDevice != 0
+                && ObjInfo1.Attr.u.Unix.INodeId       != 0)
+                return true;
+        }
+    }
+
+    /*
+     * Fallback, compare absolute/real paths. Return failure on paths that are
+     * too long.
+     */
+    char szPath1[RTPATH_MAX];
+    rc = RTPathAbs(pszPath1, szPath1, sizeof(szPath1));
+    AssertRCReturn(rc, VERR_FILENAME_TOO_LONG);
+
+    char szPath2[RTPATH_MAX];
+    rc = RTPathAbs(pszPath2, szPath2, sizeof(szPath2)); AssertRC(rc);
+    AssertRCReturn(rc, VERR_FILENAME_TOO_LONG);
+
+    if (RTPathCompare(szPath1, szPath2) == 0)
+        return true;
+
+    /** @todo Relsolve any symbolic links in the paths. Too lazy for that right
+     *        now. */
+    return false;
+}
+RT_EXPORT_SYMBOL(RTPathIsSame);
+