[pschweitzer] 70787: [NTFS] Add a missing lock

Author: pschweitzer
Date: Thu Feb 25 20:49:31 2016
New Revision: 70787

URL: http://svn.reactos.org/svn/reactos?rev=70787&view=rev
Log:
[NTFS]
Add a missing lock

Modified:
    trunk/reactos/drivers/filesystems/ntfs/dirctl.c

Modified: trunk/reactos/drivers/filesystems/ntfs/dirctl.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/ntfs/d…
==============================================================================
--- trunk/reactos/drivers/filesystems/ntfs/dirctl.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/ntfs/dirctl.c	[iso-8859-1] Thu Feb 25 20:49:31 2016
@@ -363,6 +363,13 @@
 
     DPRINT("Buffer=%p tofind=%S\n", Buffer, Ccb->DirectorySearchPattern);
 
+    if (!ExAcquireResourceExclusiveLite(&DeviceExtension->DirResource,
+                                        BooleanFlagOn(IrpContext->Flags,
IRPCONTEXT_CANWAIT)))
+    {
+        ExReleaseResourceLite(&Fcb->MainResource);
+        return STATUS_PENDING;
+    }
+
     while (Status == STATUS_SUCCESS && BufferLength > 0)
     {
         Status = NtfsFindFileAt(DeviceExtension,
@@ -469,6 +476,7 @@
         Buffer0->NextEntryOffset = 0;
     }
 
+    ExReleaseResourceLite(&DeviceExtension->DirResource);
     ExReleaseResourceLite(&Fcb->MainResource);
 
     if (FileIndex > 0)