Imported Upstream version 2.0.0.11353upstream/2.0.0.11353

36 files changed, 0 insertions, 890 deletions

diff --git a/src/mscorlib/corefx/Interop/Windows/BCrypt/Interop.BCryptGenRandom.cs b/src/mscorlib/corefx/Interop/Windows/BCrypt/Interop.BCryptGenRandom.cs
deleted file mode 100644
index d2ce4131b0..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/BCrypt/Interop.BCryptGenRandom.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-// 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.
-
-using System;
-using System.Diagnostics;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class BCrypt
-    {
-        internal static unsafe NTSTATUS BCryptGenRandom(byte* pbBuffer, int count)
-        {
-            Debug.Assert(pbBuffer != null);
-            Debug.Assert(count >= 0);
-
-            return BCryptGenRandom(IntPtr.Zero, pbBuffer, count, BCRYPT_USE_SYSTEM_PREFERRED_RNG);
-        }
-
-        private const int BCRYPT_USE_SYSTEM_PREFERRED_RNG = 0x00000002;
-
-        [DllImport(Libraries.BCrypt, CharSet = CharSet.Unicode)]
-        private static unsafe extern NTSTATUS BCryptGenRandom(IntPtr hAlgorithm, byte* pbBuffer, int cbBuffer, int dwFlags);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/BCrypt/Interop.NTSTATUS.cs b/src/mscorlib/corefx/Interop/Windows/BCrypt/Interop.NTSTATUS.cs
deleted file mode 100644
index 49d674f399..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/BCrypt/Interop.NTSTATUS.cs
+++ /dev/null
@@ -1,19 +0,0 @@
-// 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.
-
-using System;
-
-internal partial class Interop
-{
-    internal partial class BCrypt
-    {
-        internal enum NTSTATUS : uint
-        {
-            STATUS_SUCCESS = 0x0,
-            STATUS_NOT_FOUND = 0xc0000225,
-            STATUS_INVALID_PARAMETER = 0xc000000d,
-            STATUS_NO_MEMORY = 0xc0000017,
-        }
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/Crypt32/Interop.CryptProtectMemory.cs b/src/mscorlib/corefx/Interop/Windows/Crypt32/Interop.CryptProtectMemory.cs
deleted file mode 100644
index b10cb6a041..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/Crypt32/Interop.CryptProtectMemory.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-// 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.
-
-using System;
-using System.Runtime.InteropServices;
-using System.Security;
-
-internal partial class Interop
-{
-    internal partial class Crypt32
-    {
-        internal const uint CRYPTPROTECTMEMORY_BLOCK_SIZE = 16;
-        internal const uint CRYPTPROTECTMEMORY_SAME_PROCESS = 0;
-
-        [DllImport(Libraries.Crypt32, CharSet = CharSet.Unicode, SetLastError = true)]
-        internal static extern bool CryptProtectMemory(SafeBSTRHandle pData, uint cbData, uint dwFlags);
-
-        [DllImport(Libraries.Crypt32, CharSet = CharSet.Unicode, SetLastError = true)]
-        internal static extern bool CryptUnprotectMemory(SafeBSTRHandle pData, uint cbData, uint dwFlags);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/Interop.BOOL.cs b/src/mscorlib/corefx/Interop/Windows/Interop.BOOL.cs
deleted file mode 100644
index 9f4dab8935..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/Interop.BOOL.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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.
-
-internal partial class Interop
-{
-    /// <summary>
-    /// Blittable version of Windows BOOL type. It is convenient in situations where
-    /// manual marshalling is required, or to avoid overhead of regular bool marshalling.
-    /// </summary>
-    /// <remarks>
-    /// Some Windows APIs return arbitrary integer values although the return type is defined
-    /// as BOOL. It is best to never compare BOOL to TRUE. Always use bResult != BOOL.FALSE
-    /// or bResult == BOOL.FALSE .
-    /// </remarks>
-    internal enum BOOL : int
-    {
-        FALSE = 0,
-        TRUE = 1,
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/Interop.Errors.cs b/src/mscorlib/corefx/Interop/Windows/Interop.Errors.cs
deleted file mode 100644
index 7eeb18de01..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/Interop.Errors.cs
+++ /dev/null
@@ -1,71 +0,0 @@
-// 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.
-
-internal partial class Interop
-{
-    internal partial class Errors
-    {
-        internal const int ERROR_SUCCESS = 0x0;
-        internal const int ERROR_INVALID_FUNCTION = 0x1;
-        internal const int ERROR_FILE_NOT_FOUND = 0x2;
-        internal const int ERROR_PATH_NOT_FOUND = 0x3;
-        internal const int ERROR_ACCESS_DENIED = 0x5;
-        internal const int ERROR_INVALID_HANDLE = 0x6;
-        internal const int ERROR_NOT_ENOUGH_MEMORY = 0x8;
-        internal const int ERROR_INVALID_DATA = 0xD;
-        internal const int ERROR_INVALID_DRIVE = 0xF;
-        internal const int ERROR_NO_MORE_FILES = 0x12;
-        internal const int ERROR_NOT_READY = 0x15;
-        internal const int ERROR_BAD_LENGTH = 0x18;
-        internal const int ERROR_SHARING_VIOLATION = 0x20;
-        internal const int ERROR_LOCK_VIOLATION = 0x21;
-        internal const int ERROR_HANDLE_EOF = 0x26;
-        internal const int ERROR_FILE_EXISTS = 0x50;
-        internal const int ERROR_INVALID_PARAMETER = 0x57;
-        internal const int ERROR_BROKEN_PIPE = 0x6D;
-        internal const int ERROR_INSUFFICIENT_BUFFER = 0x7A;
-        internal const int ERROR_INVALID_NAME = 0x7B;
-        internal const int ERROR_NEGATIVE_SEEK = 0x83;
-        internal const int ERROR_DIR_NOT_EMPTY = 0x91;
-        internal const int ERROR_BAD_PATHNAME = 0xA1;
-        internal const int ERROR_LOCK_FAILED = 0xA7;
-        internal const int ERROR_BUSY = 0xAA;
-        internal const int ERROR_ALREADY_EXISTS = 0xB7;
-        internal const int ERROR_BAD_EXE_FORMAT = 0xC1;
-        internal const int ERROR_ENVVAR_NOT_FOUND = 0xCB;
-        internal const int ERROR_FILENAME_EXCED_RANGE = 0xCE;
-        internal const int ERROR_EXE_MACHINE_TYPE_MISMATCH = 0xD8;
-        internal const int ERROR_PIPE_BUSY = 0xE7;
-        internal const int ERROR_NO_DATA = 0xE8;
-        internal const int ERROR_PIPE_NOT_CONNECTED = 0xE9;
-        internal const int ERROR_MORE_DATA = 0xEA;
-        internal const int ERROR_NO_MORE_ITEMS = 0x103;
-        internal const int ERROR_PARTIAL_COPY = 0x12B;
-        internal const int ERROR_ARITHMETIC_OVERFLOW = 0x216;
-        internal const int ERROR_PIPE_CONNECTED = 0x217;
-        internal const int ERROR_PIPE_LISTENING = 0x218;
-        internal const int ERROR_OPERATION_ABORTED = 0x3E3;
-        internal const int ERROR_IO_PENDING = 0x3E5;
-        internal const int ERROR_NO_TOKEN = 0x3f0;
-        internal const int ERROR_DLL_INIT_FAILED = 0x45A;
-        internal const int ERROR_NOT_FOUND = 0x490;
-        internal const int ERROR_NON_ACCOUNT_SID = 0x4E9;
-        internal const int ERROR_NOT_ALL_ASSIGNED = 0x514;
-        internal const int ERROR_UNKNOWN_REVISION = 0x519;
-        internal const int ERROR_INVALID_OWNER = 0x51B;
-        internal const int ERROR_INVALID_PRIMARY_GROUP = 0x51C;
-        internal const int ERROR_NO_SUCH_PRIVILEGE = 0x521;
-        internal const int ERROR_PRIVILEGE_NOT_HELD = 0x522;
-        internal const int ERROR_INVALID_ACL = 0x538;
-        internal const int ERROR_INVALID_SECURITY_DESCR = 0x53A;
-        internal const int ERROR_INVALID_SID = 0x539;
-        internal const int ERROR_BAD_IMPERSONATION_LEVEL = 0x542;
-        internal const int ERROR_CANT_OPEN_ANONYMOUS = 0x543;
-        internal const int ERROR_NO_SECURITY_ON_OBJECT = 0x546;
-        internal const int ERROR_TRUSTED_RELATIONSHIP_FAILURE = 0x6FD;
-        internal const int ERROR_RESOURCE_LANG_NOT_FOUND = 0x717;
-        internal const int EFail = unchecked((int)0x80004005);
-        internal const int E_FILENOTFOUND = unchecked((int)0x80070002);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/Interop.Libraries.cs b/src/mscorlib/corefx/Interop/Windows/Interop.Libraries.cs
deleted file mode 100644
index f19f9dcf52..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/Interop.Libraries.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-// 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.
-
-internal static partial class Interop
-{
-    internal static class Libraries
-    {
-        internal const string BCrypt = "BCrypt.dll";
-        internal const string Crypt32 = "crypt32.dll";
-        internal const string Kernel32 = "kernel32.dll";
-        internal const string NtDll = "ntdll.dll";
-        internal const string OleAut32 = "oleaut32.dll";
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/NtDll/Interop.ZeroMemory.cs b/src/mscorlib/corefx/Interop/Windows/NtDll/Interop.ZeroMemory.cs
deleted file mode 100644
index bd2a64cf14..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/NtDll/Interop.ZeroMemory.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-// 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.
-
-using System;
-using System.Runtime.InteropServices;
-using System.Security;
-
-internal partial class Interop
-{
-    internal partial class NtDll
-    {
-
-        [DllImport(Libraries.NtDll, CharSet = CharSet.Unicode, EntryPoint = "RtlZeroMemory")]
-        internal static extern void ZeroMemory(IntPtr address, UIntPtr length);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.CancelIoEx.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.CancelIoEx.cs
deleted file mode 100644
index fc99e3052f..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.CancelIoEx.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System.Runtime.InteropServices;
-using System.Threading;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern unsafe bool CancelIoEx(SafeHandle handle, NativeOverlapped* lpOverlapped);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.CloseHandle.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.CloseHandle.cs
deleted file mode 100644
index 96ed922a84..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.CloseHandle.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-// 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.
-
-using System;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        [return: MarshalAs(UnmanagedType.Bool)]
-        internal static extern bool CloseHandle(IntPtr handle);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.CreateFile.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.CreateFile.cs
deleted file mode 100644
index 5f6f6115ab..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.CreateFile.cs
+++ /dev/null
@@ -1,40 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.IO;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        /// <summary>
-        /// WARNING: This method does not implicitly handle long paths. Use CreateFile.
-        /// </summary>
-        [DllImport(Libraries.Kernel32, EntryPoint = "CreateFileW", SetLastError = true, CharSet = CharSet.Unicode, BestFitMapping = false)]
-        private static extern SafeFileHandle CreateFilePrivate(
-            string lpFileName,
-            int dwDesiredAccess,
-            System.IO.FileShare dwShareMode,
-            [In] ref SECURITY_ATTRIBUTES securityAttrs,
-            System.IO.FileMode dwCreationDisposition,
-            int dwFlagsAndAttributes,
-            IntPtr hTemplateFile);
-
-        internal static SafeFileHandle CreateFile(
-            string lpFileName,
-            int dwDesiredAccess,
-            System.IO.FileShare dwShareMode,
-            [In] ref SECURITY_ATTRIBUTES securityAttrs,
-            System.IO.FileMode dwCreationDisposition,
-            int dwFlagsAndAttributes,
-            IntPtr hTemplateFile)
-        {
-            lpFileName = PathInternal.EnsureExtendedPrefixOverMaxPath(lpFileName);
-            return CreateFilePrivate(lpFileName, dwDesiredAccess, dwShareMode, ref securityAttrs, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
-        }
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FileOperations.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FileOperations.cs
deleted file mode 100644
index 6e3ebb9ae9..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FileOperations.cs
+++ /dev/null
@@ -1,12 +0,0 @@
-// 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.
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-
-        internal const uint SEM_FAILCRITICALERRORS = 1;
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FileTypes.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FileTypes.cs
deleted file mode 100644
index 1d306665b1..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FileTypes.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-// 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.
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        internal partial class FileTypes
-        {
-            internal const int FILE_TYPE_DISK = 0x0001;
-            internal const int FILE_TYPE_CHAR = 0x0002;
-            internal const int FILE_TYPE_PIPE = 0x0003;
-        }
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FlushFileBuffers.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FlushFileBuffers.cs
deleted file mode 100644
index e10a2279cf..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FlushFileBuffers.cs
+++ /dev/null
@@ -1,17 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        [return: MarshalAs(UnmanagedType.Bool)]
-        internal static extern bool FlushFileBuffers(SafeHandle hHandle);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FormatMessage.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FormatMessage.cs
deleted file mode 100644
index 94722b6c8b..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.FormatMessage.cs
+++ /dev/null
@@ -1,112 +0,0 @@
-// 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.
-
-using System;
-using System.Text;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        private const int FORMAT_MESSAGE_IGNORE_INSERTS = 0x00000200;
-        private const int FORMAT_MESSAGE_FROM_HMODULE = 0x00000800;
-        private const int FORMAT_MESSAGE_FROM_SYSTEM = 0x00001000;
-        private const int FORMAT_MESSAGE_ARGUMENT_ARRAY = 0x00002000;
-
-
-        private const int ERROR_INSUFFICIENT_BUFFER = 0x7A;
-
-        [DllImport(Libraries.Kernel32, CharSet = CharSet.Unicode, EntryPoint = "FormatMessageW", SetLastError = true, BestFitMapping = true)]
-        private static extern int FormatMessage(
-            int dwFlags,
-            IntPtr lpSource,
-            uint dwMessageId,
-            int dwLanguageId,
-            [Out] StringBuilder lpBuffer,
-            int nSize,
-            IntPtr[] arguments);
-
-        /// <summary>
-        ///     Returns a string message for the specified Win32 error code.
-        /// </summary>
-        internal static string GetMessage(int errorCode)
-        {
-            return GetMessage(IntPtr.Zero, errorCode);
-        }
-
-        internal static string GetMessage(IntPtr moduleHandle, int errorCode)
-        {
-            var sb = new StringBuilder(InitialBufferSize);
-            do
-            {
-                string errorMsg;
-                if (TryGetErrorMessage(moduleHandle, errorCode, sb, out errorMsg))
-                {
-                    return errorMsg;
-                }
-                else
-                {
-                    // increase the capacity of the StringBuilder.
-                    sb.Capacity *= BufferSizeIncreaseFactor;
-                }
-            }
-            while (sb.Capacity < MaxAllowedBufferSize);
-
-            // If you come here then a size as large as 65K is also not sufficient and so we give the generic errorMsg.
-            return string.Format("Unknown error (0x{0:x})", errorCode);
-        }
-
-        private static bool TryGetErrorMessage(IntPtr moduleHandle, int errorCode, StringBuilder sb, out string errorMsg)
-        {
-            errorMsg = "";
-
-            int flags = FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_ARGUMENT_ARRAY;
-            if (moduleHandle != IntPtr.Zero)
-            {
-                flags |= FORMAT_MESSAGE_FROM_HMODULE;
-            }
-
-            int result = FormatMessage(flags, moduleHandle, (uint)errorCode, 0, sb, sb.Capacity, null);
-            if (result != 0)
-            {
-                int i = sb.Length;
-                while (i > 0)
-                {
-                    char ch = sb[i - 1];
-                    if (ch > 32 && ch != '.') break;
-                    i--;
-                }
-                errorMsg = sb.ToString(0, i);
-            }
-            else if (Marshal.GetLastWin32Error() == ERROR_INSUFFICIENT_BUFFER)
-            {
-                return false;
-            }
-            else
-            {
-                errorMsg = string.Format("Unknown error (0x{0:x})", errorCode);
-            }
-
-            return true;
-        }
-
-        // Windows API FormatMessage lets you format a message string given an errorcode.
-        // Unlike other APIs this API does not support a way to query it for the total message size.
-        //
-        // So the API can only be used in one of these two ways.
-        // a. You pass a buffer of appropriate size and get the resource.
-        // b. Windows creates a buffer and passes the address back and the onus of releasing the buffer lies on the caller.
-        //
-        // Since the error code is coming from the user, it is not possible to know the size in advance.
-        // Unfortunately we can't use option b. since the buffer can only be freed using LocalFree and it is a private API on onecore.
-        // Also, using option b is ugly for the managed code and could cause memory leak in situations where freeing is unsuccessful.
-        // 
-        // As a result we use the following approach.
-        // We initially call the API with a buffer size of 256 and then gradually increase the size in case of failure until we reach the maximum allowed limit of 65K.
-        private const int InitialBufferSize = 256;
-        private const int BufferSizeIncreaseFactor = 4;
-        private const int MaxAllowedBufferSize = 65 * 1024;
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetFileInformationByHandleEx.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetFileInformationByHandleEx.cs
deleted file mode 100644
index 146c4638ee..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetFileInformationByHandleEx.cs
+++ /dev/null
@@ -1,26 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern bool GetFileInformationByHandleEx(SafeFileHandle hFile, FILE_INFO_BY_HANDLE_CLASS FileInformationClass, out FILE_STANDARD_INFO lpFileInformation, uint dwBufferSize);
-
-        internal partial struct FILE_STANDARD_INFO
-        {
-            internal long AllocationSize;
-            internal long EndOfFile;
-            internal uint NumberOfLinks;
-            internal BOOL DeletePending;
-            internal BOOL Directory;
-        }
-
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetFileType_SafeHandle.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetFileType_SafeHandle.cs
deleted file mode 100644
index c07a1683a5..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetFileType_SafeHandle.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal extern static int GetFileType(SafeHandle hFile);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetFullPathNameW.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetFullPathNameW.cs
deleted file mode 100644
index 15dd581113..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetFullPathNameW.cs
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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.
-
-using System;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        /// <summary>
-        /// WARNING: This method does not implicitly handle long paths. Use GetFullPathName or PathHelper.
-        /// </summary>
-        [DllImport(Libraries.Kernel32, SetLastError = true, CharSet = CharSet.Unicode, BestFitMapping = false, ExactSpelling = true)]
-        unsafe internal static extern uint GetFullPathNameW(char* path, uint numBufferChars, char[] buffer, IntPtr mustBeZero);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetLongPathNameW.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetLongPathNameW.cs
deleted file mode 100644
index a58d1013ca..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetLongPathNameW.cs
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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.
-
-using System;
-using System.Runtime.InteropServices;
-
-partial class Interop
-{
-    partial class Kernel32
-    {
-        /// <summary>
-        /// WARNING: This method does not implicitly handle long paths. Use GetFullPath/PathHelper.
-        /// </summary>
-        [DllImport(Libraries.Kernel32, SetLastError = true, CharSet = CharSet.Unicode, BestFitMapping = false, ExactSpelling = true)]
-        internal static extern uint GetLongPathNameW(char[] lpszShortPath, char[] lpszLongPath, uint cchBuffer);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetTempFileNameW.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetTempFileNameW.cs
deleted file mode 100644
index d157a29c92..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetTempFileNameW.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-// 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.
-
-using System;
-using System.Text;
-using System.Runtime.InteropServices;
-
-partial class Interop
-{
-    partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, CharSet = CharSet.Unicode, SetLastError = true, BestFitMapping = false)]
-        internal static extern uint GetTempFileNameW(string tmpPath, string prefix, uint uniqueIdOrZero, [Out]StringBuilder tmpFileName);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetTempPathW.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetTempPathW.cs
deleted file mode 100644
index 25ffcd55b0..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.GetTempPathW.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-// 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.
-
-using System.IO;
-using System.Text;
-using System.Runtime.InteropServices;
-
-partial class Interop
-{
-    partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, CharSet = CharSet.Unicode, BestFitMapping = false)]
-        internal static extern uint GetTempPathW(int bufferLen, [Out]StringBuilder buffer);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.LockFile.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.LockFile.cs
deleted file mode 100644
index a21d00f4f6..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.LockFile.cs
+++ /dev/null
@@ -1,20 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.IO;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern bool LockFile(SafeFileHandle handle, int offsetLow, int offsetHigh, int countLow, int countHigh);
-
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern bool UnlockFile(SafeFileHandle handle, int offsetLow, int offsetHigh, int countLow, int countHigh);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.ReadFile_SafeHandle_IntPtr.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.ReadFile_SafeHandle_IntPtr.cs
deleted file mode 100644
index 076f7f136f..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.ReadFile_SafeHandle_IntPtr.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern unsafe int ReadFile(
-            SafeHandle handle,
-            byte* bytes,
-            int numBytesToRead,
-            out int numBytesRead,
-            IntPtr mustBeZero);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.ReadFile_SafeHandle_NativeOverlapped.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.ReadFile_SafeHandle_NativeOverlapped.cs
deleted file mode 100644
index 3ae65a8806..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.ReadFile_SafeHandle_NativeOverlapped.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.Runtime.InteropServices;
-using System.Threading;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern unsafe int ReadFile(
-            SafeHandle handle,
-            byte* bytes,
-            int numBytesToRead,
-            IntPtr numBytesRead_mustBeZero,
-            NativeOverlapped* overlapped);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SECURITY_ATTRIBUTES.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SECURITY_ATTRIBUTES.cs
deleted file mode 100644
index 8d31f8622f..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SECURITY_ATTRIBUTES.cs
+++ /dev/null
@@ -1,21 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [StructLayout(LayoutKind.Sequential)]
-        internal struct SECURITY_ATTRIBUTES
-        {
-            internal uint nLength;
-            internal IntPtr lpSecurityDescriptor;
-            internal BOOL bInheritHandle;
-        }
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SafeCreateFile.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SafeCreateFile.cs
deleted file mode 100644
index 4192f569e0..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SafeCreateFile.cs
+++ /dev/null
@@ -1,45 +0,0 @@
-// 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.
-
-using System;
-using System.IO;
-using System.Runtime.InteropServices;
-using Microsoft.Win32.SafeHandles;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        internal static readonly IntPtr INVALID_HANDLE_VALUE = new IntPtr(-1);  // WinBase.h
-
-        /// <summary>
-        /// Does not allow access to non-file devices. This disallows DOS devices like "con:", "com1:",
-        /// "lpt1:", etc.  Use this to avoid security problems, like allowing a web client asking a server
-        /// for "http://server/com1.aspx" and then causing a worker process to hang.
-        /// </summary>
-        internal static SafeFileHandle SafeCreateFile(
-            String lpFileName,
-            int dwDesiredAccess,
-            System.IO.FileShare dwShareMode,
-            ref Interop.Kernel32.SECURITY_ATTRIBUTES securityAttrs,
-            FileMode dwCreationDisposition,
-            int dwFlagsAndAttributes,
-            IntPtr hTemplateFile)
-        {
-            SafeFileHandle handle = UnsafeCreateFile(lpFileName, dwDesiredAccess, dwShareMode, ref securityAttrs, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
-
-            if (!handle.IsInvalid)
-            {
-                int fileType = Interop.Kernel32.GetFileType(handle);
-                if (fileType != Interop.Kernel32.FileTypes.FILE_TYPE_DISK)
-                {
-                    handle.Dispose();
-                    throw new NotSupportedException(SR.NotSupported_FileStreamOnNonFiles);
-                }
-            }
-
-            return handle;
-        }
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SecurityOptions.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SecurityOptions.cs
deleted file mode 100644
index 4a4402484f..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SecurityOptions.cs
+++ /dev/null
@@ -1,18 +0,0 @@
-// 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.
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        internal partial class SecurityOptions
-        {
-            internal const int SECURITY_SQOS_PRESENT = 0x00100000;
-            internal const int SECURITY_ANONYMOUS = 0 << 16;
-            internal const int SECURITY_IDENTIFICATION = 1 << 16;
-            internal const int SECURITY_IMPERSONATION = 2 << 16;
-            internal const int SECURITY_DELEGATION = 3 << 16;
-        }
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetEndOfFile.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetEndOfFile.cs
deleted file mode 100644
index e5d60041a8..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetEndOfFile.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern bool SetEndOfFile(SafeFileHandle hFile);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetErrorMode.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetErrorMode.cs
deleted file mode 100644
index caa2ce5bfa..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetErrorMode.cs
+++ /dev/null
@@ -1,14 +0,0 @@
-// 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.
-
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = false, EntryPoint = "SetErrorMode", ExactSpelling = true)]
-        internal static extern uint SetErrorMode(uint newMode);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetFileInformationByHandle.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetFileInformationByHandle.cs
deleted file mode 100644
index e31a453ba9..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetFileInformationByHandle.cs
+++ /dev/null
@@ -1,39 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        internal enum FILE_INFO_BY_HANDLE_CLASS : uint
-        {
-            FileBasicInfo = 0x0u,
-            FileStandardInfo = 0x1u,
-            FileNameInfo = 0x2u,
-            FileRenameInfo = 0x3u,
-            FileDispositionInfo = 0x4u,
-            FileAllocationInfo = 0x5u,
-            FileEndOfFileInfo = 0x6u,
-            FileStreamInfo = 0x7u,
-            FileCompressionInfo = 0x8u,
-            FileAttributeTagInfo = 0x9u,
-            FileIdBothDirectoryInfo = 0xAu,
-            FileIdBothDirectoryRestartInfo = 0xBu,
-            FileIoPriorityHintInfo = 0xCu,
-            FileRemoteProtocolInfo = 0xDu,
-            FileFullDirectoryInfo = 0xEu,
-            FileFullDirectoryRestartInfo = 0xFu,
-            FileStorageInfo = 0x10u,
-            FileAlignmentInfo = 0x11u,
-            FileIdInfo = 0x12u,
-            FileIdExtdDirectoryInfo = 0x13u,
-            FileIdExtdDirectoryRestartInfo = 0x14u,
-            MaximumFileInfoByHandleClass = 0x15u,
-        }
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetFilePointerEx.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetFilePointerEx.cs
deleted file mode 100644
index c0e5247a52..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.SetFilePointerEx.cs
+++ /dev/null
@@ -1,15 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern bool SetFilePointerEx(SafeFileHandle hFile, long liDistanceToMove, out long lpNewFilePointer, uint dwMoveMethod);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.UnsafeCreateFile.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.UnsafeCreateFile.cs
deleted file mode 100644
index 9a5cd2834d..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.UnsafeCreateFile.cs
+++ /dev/null
@@ -1,25 +0,0 @@
-// 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.
-
-using System;
-using System.IO;
-using Microsoft.Win32.SafeHandles;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        internal static SafeFileHandle UnsafeCreateFile(
-            string lpFileName,
-            int dwDesiredAccess,
-            FileShare dwShareMode,
-            ref Interop.Kernel32.SECURITY_ATTRIBUTES securityAttrs,
-            FileMode dwCreationDisposition,
-            int dwFlagsAndAttributes,
-            IntPtr hTemplateFile)
-        {
-            return CreateFile(lpFileName, dwDesiredAccess, dwShareMode, ref securityAttrs, dwCreationDisposition, dwFlagsAndAttributes, hTemplateFile);
-        }
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WideCharToMultiByte.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WideCharToMultiByte.cs
deleted file mode 100644
index 07271cae33..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WideCharToMultiByte.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-// 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.
-
-using System;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        [DllImport(Libraries.Kernel32)]
-        internal static extern unsafe int WideCharToMultiByte(
-            uint CodePage, uint dwFlags, 
-            char* lpWideCharStr, int cchWideChar, 
-            byte* lpMultiByteStr, int cbMultiByte, 
-            IntPtr lpDefaultChar, IntPtr lpUsedDefaultChar);
-
-        internal const uint CP_ACP = 0;
-        internal const uint WC_NO_BEST_FIT_CHARS = 0x00000400;
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_IntPtr.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_IntPtr.cs
deleted file mode 100644
index e7e868e142..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_IntPtr.cs
+++ /dev/null
@@ -1,24 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.Runtime.InteropServices;
-
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        // Note there are two different WriteFile prototypes - this is to use 
-        // the type system to force you to not trip across a "feature" in 
-        // Win32's async IO support.  You can't do the following three things
-        // simultaneously: overlapped IO, free the memory for the overlapped 
-        // struct in a callback (or an EndWrite method called by that callback),
-        // and pass in an address for the numBytesRead parameter.
-
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern unsafe int WriteFile(SafeHandle handle, byte* bytes, int numBytesToWrite, out int numBytesWritten, IntPtr mustBeZero);
-
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_NativeOverlapped.cs b/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_NativeOverlapped.cs
deleted file mode 100644
index dc1e97555b..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/kernel32/Interop.WriteFile_SafeHandle_NativeOverlapped.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-// 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.
-
-using Microsoft.Win32.SafeHandles;
-using System;
-using System.Runtime.InteropServices;
-using System.Threading;
-internal partial class Interop
-{
-    internal partial class Kernel32
-    {
-        // Note there are two different WriteFile prototypes - this is to use 
-        // the type system to force you to not trip across a "feature" in 
-        // Win32's async IO support.  You can't do the following three things
-        // simultaneously: overlapped IO, free the memory for the overlapped 
-        // struct in a callback (or an EndWrite method called by that callback),
-        // and pass in an address for the numBytesRead parameter.
-        [DllImport(Libraries.Kernel32, SetLastError = true)]
-        internal static extern unsafe int WriteFile(SafeHandle handle, byte* bytes, int numBytesToWrite, IntPtr numBytesWritten_mustBeZero, NativeOverlapped* lpOverlapped);
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/oleaut32/Interop.SysAllocStringLen.cs b/src/mscorlib/corefx/Interop/Windows/oleaut32/Interop.SysAllocStringLen.cs
deleted file mode 100644
index 65da4eaaea..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/oleaut32/Interop.SysAllocStringLen.cs
+++ /dev/null
@@ -1,16 +0,0 @@
-// 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.
-
-using System;
-using System.Runtime.InteropServices;
-using System.Security;
-
-internal partial class Interop
-{
-    internal partial class OleAut32
-    {
-        [DllImport(Libraries.OleAut32, CharSet = CharSet.Unicode)]
-        internal static extern SafeBSTRHandle SysAllocStringLen(IntPtr src, uint len);  // BSTR
-    }
-}
diff --git a/src/mscorlib/corefx/Interop/Windows/oleaut32/Interop.SysStringLen.cs b/src/mscorlib/corefx/Interop/Windows/oleaut32/Interop.SysStringLen.cs
deleted file mode 100644
index 027d8eece9..0000000000
--- a/src/mscorlib/corefx/Interop/Windows/oleaut32/Interop.SysStringLen.cs
+++ /dev/null
@@ -1,22 +0,0 @@
-// 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.
-
-using System;
-using System.Runtime.InteropServices;
-using System.Security;
-
-internal partial class Interop
-{
-    internal partial class OleAut32
-    {
-        [DllImport(Libraries.OleAut32)]
-        internal static extern uint SysStringLen(SafeBSTRHandle bstr);
-
-        [DllImport(Libraries.OleAut32)]
-        internal static extern uint SysStringLen(IntPtr bstr);
-
-        [DllImport(Libraries.OleAut32)]
-        internal static extern void SysFreeString(IntPtr bstr);
-    }
-}