1 files changed, 40 insertions, 0 deletions
diff --git a/src/mscorlib/shared/Interop/Windows/Kernel32/Interop.CreateFile.cs b/src/mscorlib/shared/Interop/Windows/Kernel32/Interop.CreateFile.cs
new file mode 100644
index 0000000000..9ee1e16fa6
--- /dev/null
+++ b/src/mscorlib/shared/Interop/Windows/Kernel32/Interop.CreateFile.cs
@@ -0,0 +1,40 @@
+// 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,
+            ref SECURITY_ATTRIBUTES securityAttrs,
+            System.IO.FileMode dwCreationDisposition,
+            int dwFlagsAndAttributes,
+            IntPtr hTemplateFile);
+
+        internal static SafeFileHandle CreateFile(
+            string lpFileName,
+            int dwDesiredAccess,
+            System.IO.FileShare dwShareMode,
+            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);
+        }
+    }
+}