[pschweitzer] 65508: [FASTFAT] Properly handle shared accesses on volume open. No need to add the support for this in cleanup, it was already there.

Author: pschweitzer
Date: Thu Nov 27 20:28:50 2014
New Revision: 65508
URL: http://svn.reactos.org/svn/reactos?rev=65508&view=rev
Log:
[FASTFAT]
Properly handle shared accesses on volume open.
No need to add the support for this in cleanup, it was already there.
Modified:
    trunk/reactos/drivers/filesystems/fastfat/create.c
Modified: trunk/reactos/drivers/filesystems/fastfat/create.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfa…
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat/create.c  [iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat/create.c  [iso-8859-1] Thu Nov 27 20:28:50
2014
@@ -503,6 +503,27 @@
         }
         pFcb = DeviceExt->VolumeFcb;
+
+        if (pFcb->OpenHandleCount == 0)
+        {
+
IoSetShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
+                             Stack->Parameters.Create.ShareAccess,
+                             FileObject,
+                             &pFcb->FCBShareAccess);
+        }
+        else
+        {
+            Status =
IoCheckShareAccess(Stack->Parameters.Create.SecurityContext->DesiredAccess,
+                                        Stack->Parameters.Create.ShareAccess,
+                                        FileObject,
+                                        &pFcb->FCBShareAccess,
+                                        FALSE);
+            if (!NT_SUCCESS(Status))
+            {
+                return Status;
+            }
+        }
+
         vfatAttachFCBToFileObject(DeviceExt, pFcb, FileObject);
         DeviceExt->OpenHandleCount++;