62 lines
1.9 KiB
C#
62 lines
1.9 KiB
C#
// ==++==
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//
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// Copyright (c) Microsoft Corporation. All rights reserved.
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//
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// ==--==
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/*============================================================
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**
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** Class: SafeLocalMemHandle
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**
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** <EMAIL>Author: David Gutierrez ([....]) </EMAIL>
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**
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** A wrapper for handle to local memory
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**
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** Date: July 8, 2002
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**
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===========================================================*/
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using System;
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using System.Security;
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using System.Security.Permissions;
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using System.Runtime.InteropServices;
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using System.Runtime.CompilerServices;
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using Microsoft.Win32;
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using Microsoft.Win32.SafeHandles;
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using System.Runtime.ConstrainedExecution;
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using System.Runtime.Versioning;
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namespace Microsoft.Win32.SafeHandles {
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[HostProtectionAttribute(MayLeakOnAbort = true)]
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[SuppressUnmanagedCodeSecurityAttribute]
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internal sealed class SafeLocalMemHandle : SafeHandleZeroOrMinusOneIsInvalid
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{
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internal SafeLocalMemHandle() : base(true) {}
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[SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode=true)]
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internal SafeLocalMemHandle(IntPtr existingHandle, bool ownsHandle) : base(ownsHandle) {
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SetHandle(existingHandle);
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}
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[DllImport(ExternDll.Advapi32, CharSet=System.Runtime.InteropServices.CharSet.Auto, SetLastError=true, BestFitMapping=false)]
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[ResourceExposure(ResourceScope.None)]
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internal static extern unsafe bool ConvertStringSecurityDescriptorToSecurityDescriptor(string StringSecurityDescriptor, int StringSDRevision, out SafeLocalMemHandle pSecurityDescriptor, IntPtr SecurityDescriptorSize);
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[DllImport(ExternDll.Kernel32)]
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[ResourceExposure(ResourceScope.None)]
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[ReliabilityContract(Consistency.WillNotCorruptState, Cer.Success)]
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private static extern IntPtr LocalFree(IntPtr hMem);
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override protected bool ReleaseHandle()
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{
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return LocalFree(handle) == IntPtr.Zero;
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}
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}
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}
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