diff --git a/src/dotnet/Interop.cs b/src/dotnet/Interop.cs
index 578ee345..a6b41ddf 100644
--- a/src/dotnet/Interop.cs
+++ b/src/dotnet/Interop.cs
@@ -196,10 +196,28 @@ namespace Fsp.Interop
         /// Not currently implemented. Set to 0.
         /// </summary>
         public UInt32 HardLinks;
+
         /// <summary>
         /// The extended attribute size of the file.
         /// </summary>
-        public UInt32 EaSize;
+        public UInt32 EaSize
+        {
+            get { return GetEaSize(); }
+            set { SetEaSize(value); }
+        }
+
+        internal static int EaSizeOffset =
+            (int)Marshal.OffsetOf(typeof(FileInfo), "HardLinks") + 4;
+        internal unsafe UInt32 GetEaSize()
+        {
+            fixed (FileInfo *P = &this)
+                return *(UInt32 *)((Int64)(IntPtr)P + EaSizeOffset);
+        }
+        internal unsafe void SetEaSize(UInt32 value)
+        {
+            fixed (FileInfo *P = &this)
+                *(UInt32 *)((Int64)(IntPtr)P + EaSizeOffset) = value;
+        }
     }
 
     [StructLayout(LayoutKind.Sequential)]
diff --git a/tst/passthrough-dotnet/Program.cs b/tst/passthrough-dotnet/Program.cs
index 43ad156a..3d3521e0 100644
--- a/tst/passthrough-dotnet/Program.cs
+++ b/tst/passthrough-dotnet/Program.cs
@@ -78,7 +78,6 @@ namespace passthrough
                 FileInfo.ChangeTime = FileInfo.LastWriteTime;
                 FileInfo.IndexNumber = 0;
                 FileInfo.HardLinks = 0;
-                FileInfo.EaSize = 0;
             }
             public Int32 GetFileInfo(out FileInfo FileInfo)
             {
@@ -99,7 +98,6 @@ namespace passthrough
                     FileInfo.ChangeTime = FileInfo.LastWriteTime;
                     FileInfo.IndexNumber = 0;
                     FileInfo.HardLinks = 0;
-                    FileInfo.EaSize = 0;
                 }
                 else
                     GetFileInfoFromFileSystemInfo(DirInfo, out FileInfo);