SafeEventLogWriteHandle.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / System.Runtime.DurableInstancing / System / Runtime / Interop / SafeEventLogWriteHandle.cs / 1305376 / SafeEventLogWriteHandle.cs
                        

                        
                            //------------------------------------------------------------ 
// Copyright (c) Microsoft Corporation.  All rights reserved.
//-----------------------------------------------------------

namespace System.Runtime.Interop 
{
    using Microsoft.Win32.SafeHandles; 
    using System.Runtime.InteropServices; 
    using System.Runtime.Versioning;
    using System.Globalization; 
    using System.Diagnostics;
    using System.Security;

    [Fx.Tag.SecurityNote(Critical = "Usage of SafeHandleZeroOrMinusOneIsInvalid, which is protected by a LinkDemand and InheritanceDemand")] 
    [SecurityCritical]
    sealed class SafeEventLogWriteHandle : SafeHandleZeroOrMinusOneIsInvalid 
    { 
        // Note: RegisterEventSource returns 0 on failure
        [Fx.Tag.SecurityNote(Critical = "Usage of SafeHandleZeroOrMinusOneIsInvalid, which is protected by a LinkDemand and InheritanceDemand")] 
        [SecurityCritical]
        SafeEventLogWriteHandle() : base(true) { }

        [ResourceConsumption(ResourceScope.Machine)] 
        [Fx.Tag.SecurityNote(Critical = "Usage of SafeHandleZeroOrMinusOneIsInvalid, which is protected by a LinkDemand and InheritanceDemand")]
        [SecurityCritical] 
        public static SafeEventLogWriteHandle RegisterEventSource(string uncServerName, string sourceName) 
        {
            SafeEventLogWriteHandle retval = UnsafeNativeMethods.RegisterEventSource(uncServerName, sourceName); 
            int error = Marshal.GetLastWin32Error();
            if (retval.IsInvalid)
            {
                Debug.Print("SafeEventLogWriteHandle::RegisterEventSource[" + uncServerName + ", " + sourceName + "] Failed. Last Error: " + 
                    error.ToString(CultureInfo.InvariantCulture));
            } 
 
            return retval;
        } 

        [DllImport("advapi32", SetLastError = true)]
 	    [ResourceExposure(ResourceScope.None)]
        static extern bool DeregisterEventSource(IntPtr hEventLog); 

        [Fx.Tag.SecurityNote(Critical = "Usage of SafeHandleZeroOrMinusOneIsInvalid, which is protected by a LinkDemand and InheritanceDemand")] 
        [SecurityCritical] 
        protected override bool ReleaseHandle()
        { 
            return DeregisterEventSource(this.handle);
        }
    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.

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