Alexandre Julliard : ntdll: Don' t consider a 0-byte read from a serial port as a broken pipe.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 152d65c6f34c9973e6d6acece883443746e9b78a
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=152d65c6f34c9973e6d6acece883443746e9b78a

Author: Alexandre Julliard <julliard at winehq.org>
Date:   Wed May  7 20:18:09 2008 +0200

ntdll: Don't consider a 0-byte read from a serial port as a broken pipe.

---

 dlls/ntdll/file.c |   18 +++++++++++++++---
 1 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/dlls/ntdll/file.c b/dlls/ntdll/file.c
index fd72a61..972d600 100644
--- a/dlls/ntdll/file.c
+++ b/dlls/ntdll/file.c
@@ -599,10 +599,22 @@ NTSTATUS WINAPI NtReadFile(HANDLE hFile, HANDLE hEvent,
             if (!result || total == length)
             {
                 if (total)
+                {
                     status = STATUS_SUCCESS;
-                else
-                    status = (type == FD_TYPE_FILE || type == FD_TYPE_CHAR) ? STATUS_END_OF_FILE : STATUS_PIPE_BROKEN;
-                goto done;
+                    goto done;
+                }
+                switch (type)
+                {
+                case FD_TYPE_FILE:
+                case FD_TYPE_CHAR:
+                    status = STATUS_END_OF_FILE;
+                    goto done;
+                case FD_TYPE_SERIAL:
+                    break;
+                default:
+                    status = STATUS_PIPE_BROKEN;
+                    goto done;
+                }
             }
         }
         else