Imported Upstream version 4.0.0~alpha1

Former-commit-id: 806294f5ded97629b74c85c09952f2a74fe182d9

external/referencesource/mscorlib/system/io/fileaccess.cs

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+// ==++==
+// 
+//   Copyright (c) Microsoft Corporation.  All rights reserved.
+// 
+// ==--==
+/*============================================================
+**
+** Enum:   FileAccess
+** 
+** <OWNER>[....]</OWNER>
+**
+**
+** Purpose: Enum describing whether you want read and/or write
+** permission to a file.
+**
+**
+===========================================================*/
+
+using System;
+
+namespace System.IO {
+    // Contains constants for specifying the access you want for a file.
+    // You can have Read, Write or ReadWrite access.
+    // 
+[Serializable]
+[Flags]
+[System.Runtime.InteropServices.ComVisible(true)]
+    public enum FileAccess
+    {
+        // Specifies read access to the file. Data can be read from the file and
+        // the file pointer can be moved. Combine with WRITE for read-write access.
+        Read = 1,
+    
+        // Specifies write access to the file. Data can be written to the file and
+        // the file pointer can be moved. Combine with READ for read-write access.
+        Write = 2,
+    
+        // Specifies read and write access to the file. Data can be written to the
+        // file and the file pointer can be moved. Data can also be read from the 
+        // file.
+        ReadWrite = 3,
+    }
+}