From 50fcbd0ea9e456e2b0f8fe33b055b5352f2fa679 Mon Sep 17 00:00:00 2001
From: Eric Kohl <eric.kohl@reactos.org>
Date: Sun, 10 Oct 2004 18:23:09 +0000
Subject: [PATCH] NtReadFile(): Take FILE_USE_FILE_POINTER_POSITION into
 account.

svn path=/trunk/; revision=11260
---
 reactos/ntoskrnl/io/rw.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/reactos/ntoskrnl/io/rw.c b/reactos/ntoskrnl/io/rw.c
index 73c8bf0b038..dbb84a072e4 100644
--- a/reactos/ntoskrnl/io/rw.c
+++ b/reactos/ntoskrnl/io/rw.c
@@ -1,4 +1,4 @@
-/* $Id: rw.c,v 1.55 2004/09/28 10:51:05 ekohl Exp $
+/* $Id: rw.c,v 1.56 2004/10/10 18:23:09 ekohl Exp $
  *
  * COPYRIGHT:      See COPYING in the top level directory
  * PROJECT:        ReactOS kernel
@@ -70,7 +70,9 @@ NtReadFile (IN HANDLE FileHandle,
     return Status;
   }
 
-  if (ByteOffset == NULL)
+  if (ByteOffset == NULL ||
+      (ByteOffset->u.LowPart == FILE_USE_FILE_POINTER_POSITION &&
+       ByteOffset->u.HighPart == 0xffffffff))
   {
     /* a valid ByteOffset is required if asynch. op. */
     if (!(FileObject->Flags & FO_SYNCHRONOUS_IO))