From 418ee7239bdf5ad3749339bc44e0a0b9c6f5d1e1 Mon Sep 17 00:00:00 2001
From: Michael Martin <michael.martin@reactos.org>
Date: Thu, 9 Apr 2009 21:10:04 +0000
Subject: [PATCH] - rw.c: After the write wait has been satisfied, check that
 the pipe is not closed before trying to acquire the mutex. Fix bug #4351.

svn path=/trunk/; revision=40432
---
 reactos/drivers/filesystems/npfs/rw.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/reactos/drivers/filesystems/npfs/rw.c b/reactos/drivers/filesystems/npfs/rw.c
index aa6df9a0680..7b14449b308 100644
--- a/reactos/drivers/filesystems/npfs/rw.c
+++ b/reactos/drivers/filesystems/npfs/rw.c
@@ -836,6 +836,17 @@ NpfsWrite(PDEVICE_OBJECT DeviceObject,
                 Status = STATUS_PIPE_BROKEN;
                 goto done;
             }
+            /* Check that the pipe has not been closed */
+            if (ReaderCcb->PipeState != FILE_PIPE_CONNECTED_STATE)
+            {
+                /* If the other side is valid, fire event */
+                if (Ccb)
+                {
+                    KeResetEvent(&Ccb->WriteEvent);
+                }
+                Status = STATUS_PIPE_BROKEN;
+                goto done;
+            }
             ExAcquireFastMutex(&ReaderCcb->DataListLock);
         }