[pschweitzer] 62444: [FASTFAT] - Implement VfatNotifyChangeDirectory which handles file system notifications registration - Also add support to dispatch routine for not queuing IRPs when pending an...

Author: pschweitzer
Date: Fri Mar  7 19:42:54 2014
New Revision: 62444

URL: http://svn.reactos.org/svn/reactos?rev=62444&view=rev
Log:
[FASTFAT]
- Implement VfatNotifyChangeDirectory which handles file system notifications registration
- Also add support to dispatch routine for not queuing IRPs when pending and not required
CORE-2582

Modified:
    trunk/reactos/drivers/filesystems/fastfat/dir.c

Modified: trunk/reactos/drivers/filesystems/fastfat/dir.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/drivers/filesystems/fastfat...
==============================================================================
--- trunk/reactos/drivers/filesystems/fastfat/dir.c	[iso-8859-1] (original)
+++ trunk/reactos/drivers/filesystems/fastfat/dir.c	[iso-8859-1] Fri Mar  7 19:42:54 2014
@@ -584,6 +584,32 @@
     return Status;
 }

+NTSTATUS VfatNotifyChangeDirectory(PVFAT_IRP_CONTEXT * IrpContext)
+{
+    PVCB pVcb;
+    PVFATFCB pFcb;
+    PIO_STACK_LOCATION Stack;
+    Stack = (*IrpContext)->Stack;
+    pVcb = (*IrpContext)->DeviceExt;
+    pFcb = (PVFATFCB) (*IrpContext)->FileObject->FsContext;
+ 
+    FsRtlNotifyFullChangeDirectory(pVcb->NotifySync,
+                                   &(pVcb->NotifyList),
+                                   (*IrpContext)->FileObject->FsContext2,
+                                   (PSTRING)&(pFcb->PathNameU),
+                                   BooleanFlagOn(Stack->Flags, SL_WATCH_TREE),
+                                   FALSE,
+                                   Stack->Parameters.NotifyDirectory.CompletionFilter,
+                                   (*IrpContext)->Irp,
+                                   NULL,
+                                   NULL);
+
+    /* We don't need the IRP context as we won't handle IRP completion */
+    VfatFreeIrpContext(*IrpContext);
+    *IrpContext = NULL;
+
+    return STATUS_PENDING;
+}

/*
  * FUNCTION: directory control : read/write directory informations
@@ -603,8 +629,7 @@
             break;

case IRP_MN_NOTIFY_CHANGE_DIRECTORY:
-            DPRINT("VFAT, dir : change\n");
-            Status = STATUS_NOT_IMPLEMENTED;
+            Status = VfatNotifyChangeDirectory(&IrpContext);
             break;

default:
@@ -617,7 +642,11 @@

if (Status == STATUS_PENDING)
     {
-        Status = VfatQueueRequest(IrpContext);
+        /* Only queue if there's IRP context */
+        if (IrpContext)
+        {
+            Status = VfatQueueRequest(IrpContext);
+        }
     }
     else
     {