From 0c19516de4fdc16088892f55431c01dac47f21b4 Mon Sep 17 00:00:00 2001
From: Ben Vanik <ben.vanik@gmail.com>
Date: Sun, 20 Oct 2013 15:05:09 -0700
Subject: [PATCH] Fixing file position default value.

---
 src/xenia/kernel/modules/xboxkrnl/xboxkrnl_io.cc | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_io.cc b/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_io.cc
index 659134f44..410993377 100644
--- a/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_io.cc
+++ b/src/xenia/kernel/modules/xboxkrnl/xboxkrnl_io.cc
@@ -167,7 +167,8 @@ SHIM_CALL NtReadFile_shim(
     // TODO(benvanik): async path.
     if (true) {
       // Synchronous request.
-      if (byte_offset == 0xFFFFFFFFfffffffe) {
+      if (!byte_offset_ptr ||
+          byte_offset == 0xFFFFFFFFfffffffe) {
         // FILE_USE_FILE_POINTER_POSITION
         byte_offset = -1;
       }