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/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / CompMod / Microsoft / Win32 / SafeHandles / SafeUserTokenHandle.cs / 1 / SafeUserTokenHandle.cs
// ==++== // // Copyright (c) Microsoft Corporation. All rights reserved. // // ==--== /*============================================================ ** ** Class: SafeUserTokenHandle ** **Author: David Gutierrez ([....]) ** ** A wrapper for a user token handle ** ** Date: July 8, 2002 ** ===========================================================*/ using System; using System.Security; using System.Security.Permissions; using System.Runtime.InteropServices; using System.Runtime.CompilerServices; using Microsoft.Win32; using Microsoft.Win32.SafeHandles; using System.Runtime.ConstrainedExecution; namespace Microsoft.Win32.SafeHandles { [HostProtectionAttribute(MayLeakOnAbort = true)] [SuppressUnmanagedCodeSecurityAttribute] internal sealed class SafeUserTokenHandle : SafeHandleZeroOrMinusOneIsInvalid { // Note that OpenProcess returns 0 on failure. internal SafeUserTokenHandle() : base (true) {} internal SafeUserTokenHandle(IntPtr existingHandle, bool ownsHandle) : base(ownsHandle) { SetHandle(existingHandle); } #if !FEATURE_PAL [DllImport(ExternDll.Advapi32, CharSet=System.Runtime.InteropServices.CharSet.Auto, SetLastError=true, BestFitMapping=false)] internal extern static bool DuplicateTokenEx(SafeHandle hToken, int access, NativeMethods.SECURITY_ATTRIBUTES tokenAttributes, int impersonationLevel, int tokenType, out SafeUserTokenHandle hNewToken); #endif // !FEATURE_PAL [DllImport(ExternDll.Kernel32, ExactSpelling=true, SetLastError=true)] [ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)] private static extern bool CloseHandle(IntPtr handle); override protected bool ReleaseHandle() { return CloseHandle(handle); } } }
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