class/corlib/System.Security/SecurityContextSwitcher.cs

   1 //
   2 // System.Security.SecurityContextSwitcher structure
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using System;
  30 using System.Runtime.ConstrainedExecution;
  31 using System.Runtime.InteropServices;
  32
  33 namespace System.Security {
  34
  35         [MonoTODO ("need to determine internals")]
  36         [ComVisibleAttribute (false)]
  37         public struct SecurityContextSwitcher : IDisposable {
  38
  39                 private bool _undo;
  40
  41                 public override bool Equals (object obj)
  42                 {
  43                         return false;
  44                 }
  45
  46                 public override int GetHashCode ()
  47                 {
  48                         return 0;
  49                 }
  50
  51                 [ReliabilityContract (Consistency.WillNotCorruptState, CER.MayFail)]
  52                 public void Undo ()
  53                 {
  54                         _undo = true;
  55                 }
  56
  57                 void IDisposable.Dispose ()
  58                 {
  59                         if (!_undo)
  60                                 Undo ();
  61                 }
  62
  63 // LAMESPEC: documented but not implemented (not shown by corcompare)
  64 #if false
  65                 public static bool op_Equality (SecurityContextSwitcher c1, SecurityContextSwitcher c2)
  66                 {
  67                         return false;
  68                 }
  69
  70                 public static bool op_Inequality (SecurityContextSwitcher c1, SecurityContextSwitcher c2)
  71                 {
  72                         return false;
  73                 }
  74 #endif
  75         }
  76 }