From 4b4aad7217d3292650e77eec2cf4c198ea9c3b4b Mon Sep 17 00:00:00 2001 From: Jiyoung Yun Date: Wed, 23 Nov 2016 19:09:09 +0900 Subject: Imported Upstream version 1.1.0 --- .../Win32/SafeHandles/SafeViewOfFileHandle.cs | 50 ++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 src/mscorlib/src/Microsoft/Win32/SafeHandles/SafeViewOfFileHandle.cs (limited to 'src/mscorlib/src/Microsoft/Win32/SafeHandles/SafeViewOfFileHandle.cs') diff --git a/src/mscorlib/src/Microsoft/Win32/SafeHandles/SafeViewOfFileHandle.cs b/src/mscorlib/src/Microsoft/Win32/SafeHandles/SafeViewOfFileHandle.cs new file mode 100644 index 0000000000..01ec4d2ad8 --- /dev/null +++ b/src/mscorlib/src/Microsoft/Win32/SafeHandles/SafeViewOfFileHandle.cs @@ -0,0 +1,50 @@ +// Licensed to the .NET Foundation under one or more agreements. +// The .NET Foundation licenses this file to you under the MIT license. +// See the LICENSE file in the project root for more information. + +/*============================================================ +** +** +** +** A wrapper for file handles +** +** +===========================================================*/ +using System; +using System.Security; +using System.Security.Permissions; +using System.Runtime.InteropServices; +using System.Runtime.CompilerServices; +using System.Runtime.ConstrainedExecution; +using System.Runtime.Versioning; +using Microsoft.Win32; +using Microsoft.Win32.SafeHandles; + +namespace Microsoft.Win32.SafeHandles +{ + [System.Security.SecurityCritical] // auto-generated + internal sealed class SafeViewOfFileHandle : SafeHandleZeroOrMinusOneIsInvalid + { + [System.Security.SecurityCritical] // auto-generated_required + internal SafeViewOfFileHandle() : base(true) {} + + // 0 is an Invalid Handle + [System.Security.SecurityCritical] // auto-generated_required + internal SafeViewOfFileHandle(IntPtr handle, bool ownsHandle) : base (ownsHandle) { + SetHandle(handle); + } + + [System.Security.SecurityCritical] + override protected bool ReleaseHandle() + { + if (Win32Native.UnmapViewOfFile(handle)) + { + handle = IntPtr.Zero; + return true; + } + + return false; + } + } +} + -- cgit v1.2.3