Added some modifications for asyncronous i/o requests (for vfatfs).

svn path=/trunk/; revision=2343

diff --git a/reactos/ntoskrnl/io/create.c b/reactos/ntoskrnl/io/create.c
index 623c441..a942fb4 100644 (file)
--- a/reactos/ntoskrnl/io/create.c
+++ b/reactos/ntoskrnl/io/create.c
@@ -1,4 +1,4 @@
-/* $Id: create.c,v 1.49 2001/11/02 09:17:52 ekohl Exp $
+/* $Id: create.c,v 1.50 2001/11/02 22:22:33 hbirr Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -315,6 +315,7 @@ IoCreateFile(
    PIRP                        Irp;
    KEVENT                      Event;
    PIO_STACK_LOCATION  StackLoc;
+   IO_STATUS_BLOCK      IoSB;
    
    DPRINT("IoCreateFile(FileHandle %x, DesiredAccess %x, "
          "ObjectAttributes %x ObjectAttributes->ObjectName->Buffer %S)\n",
@@ -360,9 +361,11 @@ IoCreateFile(
        return (STATUS_UNSUCCESSFUL);
      }
      
-   Irp->UserIosb = IoStatusBlock;   //return iostatus
+   Irp->UserIosb = &IoSB;   //return iostatus
    Irp->AssociatedIrp.SystemBuffer = EaBuffer;
    Irp->Tail.Overlay.AuxiliaryBuffer = (PCHAR)ExtraCreateParameters;
+   Irp->Tail.Overlay.Thread = PsGetCurrentThread();
+   Irp->UserEvent = &Event;
    
    /*
     * Get the stack location for the new
@@ -407,14 +410,17 @@ IoCreateFile(
                              KernelMode,
                              FALSE,
                              NULL);
-       Status = IoStatusBlock->Status;
+       Status = IoSB.Status;
      }
    if (!NT_SUCCESS(Status))
      {
        DPRINT("Failing create request with status %x\n", Status);
        ZwClose(*FileHandle);
      }
-   
+   if (IoStatusBlock)
+     {
+       *IoStatusBlock = IoSB;
+     }
    assert_irql(PASSIVE_LEVEL);
 
    DPRINT("Finished IoCreateFile() (*FileHandle) %x\n", (*FileHandle));

diff --git a/reactos/ntoskrnl/io/dir.c b/reactos/ntoskrnl/io/dir.c
index 9203572..baf14b5 100644 (file)
--- a/reactos/ntoskrnl/io/dir.c
+++ b/reactos/ntoskrnl/io/dir.c
@@ -1,4 +1,4 @@
-/* $Id: dir.c,v 1.10 2000/03/26 19:38:22 ea Exp $
+/* $Id: dir.c,v 1.11 2001/11/02 22:22:33 hbirr Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -87,6 +87,7 @@ NtQueryDirectoryFile(
    NTSTATUS Status;
    KEVENT Event;
    PIO_STACK_LOCATION IoStack;
+   IO_STATUS_BLOCK IoSB;
    
    DPRINT("NtQueryDirectoryFile()\n");
    
@@ -113,7 +114,7 @@ NtQueryDirectoryFile(
      }
    
    
-   Irp->UserIosb = IoStatusBlock;
+   Irp->UserIosb = &IoSB;
    Irp->UserEvent = &Event;
    Irp->UserBuffer=FileInformation;
    
@@ -155,7 +156,11 @@ NtQueryDirectoryFile(
          {
             KeWaitForSingleObject(&Event,Executive,KernelMode,FALSE,NULL);
          }
-       Status = IoStatusBlock->Status;
+       Status = IoSB.Status;
+     }
+   if (IoStatusBlock)
+     {
+       *IoStatusBlock = IoSB;
      }
    return(Status);
 }

diff --git a/reactos/ntoskrnl/io/file.c b/reactos/ntoskrnl/io/file.c
index 4d631e9..6e279f9 100644 (file)
--- a/reactos/ntoskrnl/io/file.c
+++ b/reactos/ntoskrnl/io/file.c
@@ -1,4 +1,4 @@
-/* $Id: file.c,v 1.14 2001/06/12 12:30:36 ekohl Exp $
+/* $Id: file.c,v 1.15 2001/11/02 22:22:33 hbirr Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -40,6 +40,7 @@ NtQueryInformationFile(HANDLE FileHandle,
    PIO_STACK_LOCATION StackPtr;
    KEVENT Event;
    PVOID SystemBuffer;
+   IO_STATUS_BLOCK IoSB;
    
    assert(IoStatusBlock != NULL);
    assert(FileInformation != NULL);
@@ -87,7 +88,7 @@ NtQueryInformationFile(HANDLE FileHandle,
      }
    
    Irp->AssociatedIrp.SystemBuffer = SystemBuffer;
-   Irp->UserIosb = IoStatusBlock;
+   Irp->UserIosb = &IoSB;
    Irp->UserEvent = &Event;
    
    StackPtr = IoGetNextIrpStackLocation(Irp);
@@ -104,15 +105,19 @@ NtQueryInformationFile(HANDLE FileHandle,
    
    Status = IoCallDriver(FileObject->DeviceObject,
                         Irp);
-   if (Status==STATUS_PENDING && (FileObject->Flags & FO_SYNCHRONOUS_IO))
+   if (Status==STATUS_PENDING && !(FileObject->Flags & FO_SYNCHRONOUS_IO))
      {
        KeWaitForSingleObject(&Event,
                              Executive,
                              KernelMode,
                              FALSE,
                              NULL);
-       Status = Irp->IoStatus.Status;
+       Status = IoSB.Status;
      }
+  if (IoStatusBlock)
+    {
+      *IoStatusBlock = IoSB;
+    }
 
   if (NT_SUCCESS(Status))
     {
@@ -187,14 +192,14 @@ IoQueryFileInformation(IN PFILE_OBJECT FileObject,
    
    Status = IoCallDriver(FileObject->DeviceObject,
                         Irp);
-   if (Status==STATUS_PENDING && (FileObject->Flags & FO_SYNCHRONOUS_IO))
+   if (Status==STATUS_PENDING && !(FileObject->Flags & FO_SYNCHRONOUS_IO))
      {
        KeWaitForSingleObject(&Event,
                              Executive,
                              KernelMode,
                              FALSE,
                              NULL);
-       Status = Irp->IoStatus.Status;
+       Status = IoStatusBlock.Status;
      }
    
    if (ReturnedLength != NULL)
@@ -222,6 +227,7 @@ NtSetInformationFile(HANDLE FileHandle,
    KEVENT Event;
    NTSTATUS Status;
    PVOID SystemBuffer;
+   IO_STATUS_BLOCK IoSB;
    
    assert(IoStatusBlock != NULL)
    assert(FileInformation != NULL)
@@ -280,7 +286,7 @@ NtSetInformationFile(HANDLE FileHandle,
                      Length);
    
    Irp->AssociatedIrp.SystemBuffer = SystemBuffer;
-   Irp->UserIosb = IoStatusBlock;
+   Irp->UserIosb = &IoSB;
    Irp->UserEvent = &Event;
    
    StackPtr = IoGetNextIrpStackLocation(Irp);
@@ -302,16 +308,19 @@ NtSetInformationFile(HANDLE FileHandle,
    DPRINT("FileObject->DeviceObject %x\n", FileObject->DeviceObject);
    Status = IoCallDriver(FileObject->DeviceObject,
                         Irp);
-   if (Status == STATUS_PENDING && (FileObject->Flags & FO_SYNCHRONOUS_IO))
+   if (Status == STATUS_PENDING && !(FileObject->Flags & FO_SYNCHRONOUS_IO))
      {
        KeWaitForSingleObject(&Event,
                              Executive,
                              KernelMode,
                              FALSE,
                              NULL);
-       Status = Irp->IoStatus.Status;
+       Status = IoSB.Status;
+     }
+   if (IoStatusBlock)
+     {
+       *IoStatusBlock = IoSB;
      }
-   
    ExFreePool(SystemBuffer);
    ObDereferenceObject(FileObject);
    

diff --git a/reactos/ntoskrnl/io/flush.c b/reactos/ntoskrnl/io/flush.c
index fd5b420..d3cd560 100644 (file)
--- a/reactos/ntoskrnl/io/flush.c
+++ b/reactos/ntoskrnl/io/flush.c
@@ -49,6 +49,7 @@ NtFlushBuffersFile (
    PIO_STACK_LOCATION StackPtr;
    KEVENT Event;
    NTSTATUS Status;
+   IO_STATUS_BLOCK IoSB;
       
    Status = ObReferenceObjectByHandle(FileHandle,
                                      FILE_WRITE_DATA,
@@ -68,7 +69,7 @@ NtFlushBuffersFile (
                                      0,
                                      NULL,
                                      &Event,
-                                     IoStatusBlock);
+                                     &IoSB);
 
    StackPtr = IoGetNextIrpStackLocation(Irp);
    StackPtr->FileObject = FileObject;
@@ -77,7 +78,11 @@ NtFlushBuffersFile (
    if (Status==STATUS_PENDING)
      {
        KeWaitForSingleObject(&Event,Executive,KernelMode,FALSE,NULL);
-       Status = Irp->IoStatus.Status;
+       Status = IoSB.Status;
+     }
+   if (IoStatusBlock)
+     {
+       *IoStatusBlock = IoSB;
      }
    return(Status);
 }

diff --git a/reactos/ntoskrnl/io/fs.c b/reactos/ntoskrnl/io/fs.c
index eb59595..63c959e 100644 (file)
--- a/reactos/ntoskrnl/io/fs.c
+++ b/reactos/ntoskrnl/io/fs.c
@@ -1,4 +1,4 @@
-/* $Id: fs.c,v 1.18 2001/07/15 15:36:31 ekohl Exp $
+/* $Id: fs.c,v 1.19 2001/11/02 22:22:33 hbirr Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -56,6 +56,7 @@ NtFsControlFile (
    PIRP Irp;
    PIO_STACK_LOCATION StackPtr;
    KEVENT KEvent;
+   IO_STATUS_BLOCK IoSB;
 
    DPRINT("NtFsControlFile(DeviceHandle %x EventHandle %x ApcRoutine %x "
           "ApcContext %x IoStatusBlock %x IoControlCode %x "
@@ -89,7 +90,7 @@ NtFsControlFile (
                                       OutputBufferSize,
                                       FALSE,
                                       &KEvent,
-                                      IoStatusBlock);
+                                      &IoSB);
    
    Irp->Overlay.AsynchronousParameters.UserApcRoutine = ApcRoutine;
    Irp->Overlay.AsynchronousParameters.UserApcContext = ApcContext;
@@ -103,10 +104,14 @@ NtFsControlFile (
    StackPtr->MajorFunction = IRP_MJ_FILE_SYSTEM_CONTROL;
    
    Status = IoCallDriver(DeviceObject,Irp);
-   if (Status == STATUS_PENDING && (FileObject->Flags & FO_SYNCHRONOUS_IO))
+   if (Status == STATUS_PENDING && !(FileObject->Flags & FO_SYNCHRONOUS_IO))
      {
        KeWaitForSingleObject(&KEvent,Executive,KernelMode,FALSE,NULL);
-       return(IoStatusBlock->Status);
+       Status = IoSB.Status;
+     }
+   if (IoStatusBlock)
+     {
+        *IoStatusBlock = IoSB;
      }
    return(Status);
 }

diff --git a/reactos/ntoskrnl/io/ioctrl.c b/reactos/ntoskrnl/io/ioctrl.c
index 03958d6..4e07fc4 100644 (file)
--- a/reactos/ntoskrnl/io/ioctrl.c
+++ b/reactos/ntoskrnl/io/ioctrl.c
@@ -1,4 +1,4 @@
-/* $Id: ioctrl.c,v 1.12 2001/03/21 23:27:18 chorns Exp $
+/* $Id: ioctrl.c,v 1.13 2001/11/02 22:22:33 hbirr Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -39,6 +39,8 @@ NTSTATUS STDCALL NtDeviceIoControlFile (IN HANDLE DeviceHandle,
    PIRP Irp;
    PIO_STACK_LOCATION StackPtr;
    KEVENT KEvent;
+   PKEVENT ptrEvent;
+   IO_STATUS_BLOCK IoSB;
 
    DPRINT("NtDeviceIoControlFile(DeviceHandle %x Event %x UserApcRoutine %x "
           "UserApcContext %x IoStatusBlock %x IoControlCode %x "
@@ -59,7 +61,32 @@ NTSTATUS STDCALL NtDeviceIoControlFile (IN HANDLE DeviceHandle,
      {
        return(Status);
      }
-   
+   if (Event != NULL)
+     {
+        Status = ObReferenceObjectByHandle (Event,
+                                            SYNCHRONIZE,
+                                            ExEventObjectType,
+                                            UserMode,
+                                            (PVOID*)&ptrEvent,
+                                            NULL);
+        if (!NT_SUCCESS(Status))
+          {
+            ObDereferenceObject(FileObject);
+           return Status;
+          }
+      }
+    else if (FileObject->Flags & FO_SYNCHRONOUS_IO)
+      {
+         ptrEvent = NULL;
+      }
+    else
+      {
+         KeInitializeEvent (&KEvent, 
+                            NotificationEvent,
+                            FALSE);
+         ptrEvent = &KEvent;
+      }
+
    DeviceObject = FileObject->DeviceObject;
 
    KeInitializeEvent(&KEvent,NotificationEvent,TRUE);
@@ -71,8 +98,8 @@ NTSTATUS STDCALL NtDeviceIoControlFile (IN HANDLE DeviceHandle,
                                       OutputBuffer,
                                       OutputBufferSize,
                                       FALSE,
-                                      &KEvent,
-                                      IoStatusBlock);
+                                      ptrEvent,
+                                      Event ? IoStatusBlock : &IoSB);
 
    Irp->Overlay.AsynchronousParameters.UserApcRoutine = UserApcRoutine;
    Irp->Overlay.AsynchronousParameters.UserApcContext = UserApcContext;
@@ -84,10 +111,14 @@ NTSTATUS STDCALL NtDeviceIoControlFile (IN HANDLE DeviceHandle,
    StackPtr->Parameters.DeviceIoControl.OutputBufferLength = OutputBufferSize;
 
    Status = IoCallDriver(DeviceObject,Irp);
-   if (Status == STATUS_PENDING && (FileObject->Flags & FO_SYNCHRONOUS_IO))
+   if (Event == NULL && Status == STATUS_PENDING && !(FileObject->Flags & FO_SYNCHRONOUS_IO))
    {
       KeWaitForSingleObject(&KEvent,Executive,KernelMode,FALSE,NULL);
-      return(IoStatusBlock->Status);
+      Status = IoSB.Status;
+   }
+   if (IoStatusBlock)
+   {
+      *IoStatusBlock = IoSB;
    }
    return(Status);
 }

diff --git a/reactos/ntoskrnl/io/rw.c b/reactos/ntoskrnl/io/rw.c
index 4aef0c0..c5ea018 100644 (file)
--- a/reactos/ntoskrnl/io/rw.c
+++ b/reactos/ntoskrnl/io/rw.c
@@ -1,4 +1,4 @@
-/* $Id: rw.c,v 1.33 2000/10/22 16:36:50 ekohl Exp $
+/* $Id: rw.c,v 1.34 2001/11/02 22:22:33 hbirr Exp $
  *
  * COPYRIGHT:      See COPYING in the top level directory
  * PROJECT:        ReactOS kernel
@@ -54,6 +54,7 @@ NTSTATUS STDCALL NtReadFile(HANDLE                    FileHandle,
    PIO_STACK_LOCATION StackPtr;
    PKEVENT ptrEvent = NULL;
    KEVENT Event;
+   IO_STATUS_BLOCK IoSB;
    
    DPRINT("NtReadFile(FileHandle %x Buffer %x Length %x ByteOffset %x, "
          "IoStatusBlock %x)\n", FileHandle, Buffer, Length, ByteOffset,
@@ -92,15 +93,15 @@ NTSTATUS STDCALL NtReadFile(HANDLE                  FileHandle,
      }
    else if (FileObject->Flags & FO_SYNCHRONOUS_IO)
      { 
+       ptrEvent = NULL;
+     }
+   else
+     {
        KeInitializeEvent(&Event,
                          NotificationEvent,
                          FALSE);
        ptrEvent = &Event;
      }
-   else
-     {
-       ptrEvent = NULL;
-     }
    
    Irp = IoBuildSynchronousFsdRequest(IRP_MJ_READ,
                                      FileObject->DeviceObject,
@@ -108,7 +109,7 @@ NTSTATUS STDCALL NtReadFile(HANDLE                  FileHandle,
                                      Length,
                                      ByteOffset,
                                      ptrEvent,
-                                     IoStatusBlock);
+                                     EventHandle ? IoStatusBlock : &IoSB);
    
    Irp->Overlay.AsynchronousParameters.UserApcRoutine = ApcRoutine;
    Irp->Overlay.AsynchronousParameters.UserApcContext = ApcContext;
@@ -126,8 +127,8 @@ NTSTATUS STDCALL NtReadFile(HANDLE                  FileHandle,
    
    Status = IoCallDriver(FileObject->DeviceObject,
                         Irp);
-   if ((Status == STATUS_PENDING) && 
-       (FileObject->Flags & FO_SYNCHRONOUS_IO))
+   if (EventHandle == NULL && Status == STATUS_PENDING && 
+       !(FileObject->Flags & FO_SYNCHRONOUS_IO))
      {
        BOOLEAN Alertable;
        
@@ -145,9 +146,12 @@ NTSTATUS STDCALL NtReadFile(HANDLE                 FileHandle,
                              KernelMode,
                              Alertable,
                              NULL);
-       Status = IoStatusBlock->Status;
+       Status = IoSB.Status;
+     }
+   if (IoStatusBlock && EventHandle == NULL)
+     {
+       *IoStatusBlock = IoSB;
      }
-   
    return (Status);
 }
 
@@ -181,6 +185,7 @@ NTSTATUS STDCALL NtWriteFile(HANDLE                 FileHandle,
    PIO_STACK_LOCATION StackPtr;
    KEVENT Event;
    PKEVENT ptrEvent;
+   IO_STATUS_BLOCK IoSB;
    
    DPRINT("NtWriteFile(FileHandle %x, Buffer %x, Length %d)\n",
          FileHandle, Buffer, Length);
@@ -217,26 +222,23 @@ NTSTATUS STDCALL NtWriteFile(HANDLE                       FileHandle,
      }
    else if (FileObject->Flags & FO_SYNCHRONOUS_IO)
      { 
+       ptrEvent = NULL;
+     }
+   else
+     {
        KeInitializeEvent(&Event,
                          NotificationEvent,
                          FALSE);
        ptrEvent = &Event;
      }
-   else
-     {
-       ptrEvent = NULL;
-     }
 
-   KeInitializeEvent(&Event,
-                    NotificationEvent,
-                    FALSE);
    Irp = IoBuildSynchronousFsdRequest(IRP_MJ_WRITE,
                                      FileObject->DeviceObject,
                                      Buffer,
                                      Length,
                                      ByteOffset,
                                      ptrEvent,
-                                     IoStatusBlock);
+                                     EventHandle ? IoStatusBlock : &IoSB);
    
    Irp->Overlay.AsynchronousParameters.UserApcRoutine = ApcRoutine;
    Irp->Overlay.AsynchronousParameters.UserApcContext = ApcContext;
@@ -254,15 +256,19 @@ NTSTATUS STDCALL NtWriteFile(HANDLE                       FileHandle,
        StackPtr->Parameters.Write.Key = 0;
      }
    Status = IoCallDriver(FileObject->DeviceObject, Irp);
-   if ((Status == STATUS_PENDING) && 
-       (FileObject->Flags & FO_SYNCHRONOUS_IO))
+   if (EventHandle == NULL && Status == STATUS_PENDING && 
+       !(FileObject->Flags & FO_SYNCHRONOUS_IO))
      {
        KeWaitForSingleObject(&Event,
                              Executive,
                              KernelMode,
                              FALSE,
                              NULL);
-       Status = Irp->IoStatus.Status;
+       Status = IoSB.Status;
+     }
+   if (IoStatusBlock && EventHandle == NULL)
+     {
+       *IoStatusBlock = IoSB;
      }
    return(Status);
 }

diff --git a/reactos/ntoskrnl/io/vpb.c b/reactos/ntoskrnl/io/vpb.c
index 9dabe6d..c7a6eb8 100644 (file)
--- a/reactos/ntoskrnl/io/vpb.c
+++ b/reactos/ntoskrnl/io/vpb.c
@@ -1,4 +1,4 @@
-/* $Id: vpb.c,v 1.13 2001/06/12 12:30:36 ekohl Exp $
+/* $Id: vpb.c,v 1.14 2001/11/02 22:22:33 hbirr Exp $
  *
  * COPYRIGHT:       See COPYING in the top level directory
  * PROJECT:         ReactOS kernel
@@ -102,6 +102,7 @@ NtQueryVolumeInformationFile(IN HANDLE FileHandle,
    NTSTATUS Status;
    PIO_STACK_LOCATION StackPtr;
    PVOID SystemBuffer;
+   IO_STATUS_BLOCK IoSB;
    
    assert(IoStatusBlock != NULL);
    assert(FsInformation != NULL);
@@ -145,7 +146,8 @@ NtQueryVolumeInformationFile(IN HANDLE FileHandle,
    
    Irp->AssociatedIrp.SystemBuffer = SystemBuffer;
    Irp->UserEvent = &Event;
-   Irp->UserIosb = IoStatusBlock;
+   Irp->UserIosb = &IoSB;
+   Irp->Tail.Overlay.Thread = PsGetCurrentThread();
    
    StackPtr = IoGetNextIrpStackLocation(Irp);
    StackPtr->MajorFunction = IRP_MJ_QUERY_VOLUME_INFORMATION;
@@ -167,7 +169,7 @@ NtQueryVolumeInformationFile(IN HANDLE FileHandle,
                              KernelMode,
                              FALSE,
                              NULL);
-       Status = IoStatusBlock->Status;
+       Status = IoSB.Status;
      }
    DPRINT("Status %x\n", Status);
    
@@ -176,8 +178,12 @@ NtQueryVolumeInformationFile(IN HANDLE FileHandle,
        DPRINT("Information %lu\n", IoStatusBlock->Information);
        MmSafeCopyToUser(FsInformation,
                         SystemBuffer,
-                        IoStatusBlock->Information);
-    }
+                        IoSB.Information);
+     }
+   if (IoStatusBlock)
+     {
+       *IoStatusBlock = IoSB;
+     }
    ExFreePool(SystemBuffer);
    ObDereferenceObject(FileObject);
    
@@ -229,6 +235,7 @@ IoQueryVolumeInformation(IN PFILE_OBJECT FileObject,
    Irp->AssociatedIrp.SystemBuffer = FsInformation;
    Irp->UserEvent = &Event;
    Irp->UserIosb = &IoStatusBlock;
+   Irp->Tail.Overlay.Thread = PsGetCurrentThread();
    
    StackPtr = IoGetNextIrpStackLocation(Irp);
    StackPtr->MajorFunction = IRP_MJ_QUERY_VOLUME_INFORMATION;
@@ -278,6 +285,7 @@ NtSetVolumeInformationFile(IN HANDLE FileHandle,
    NTSTATUS Status;
    PIO_STACK_LOCATION StackPtr;
    PVOID SystemBuffer;
+   IO_STATUS_BLOCK IoSB;
    
    Status = ObReferenceObjectByHandle(FileHandle,
                                      FILE_WRITE_ATTRIBUTES,
@@ -319,7 +327,8 @@ NtSetVolumeInformationFile(IN HANDLE FileHandle,
    
    Irp->AssociatedIrp.SystemBuffer = SystemBuffer;
    Irp->UserEvent = &Event;
-   Irp->UserIosb = IoStatusBlock;
+   Irp->UserIosb = &IoSB;
+   Irp->Tail.Overlay.Thread = PsGetCurrentThread();
    
    StackPtr = IoGetNextIrpStackLocation(Irp);
    StackPtr->MajorFunction = IRP_MJ_SET_VOLUME_INFORMATION;
@@ -340,8 +349,12 @@ NtSetVolumeInformationFile(IN HANDLE FileHandle,
                              KernelMode,
                              FALSE,
                              NULL);
+        Status = IoSB.Status;
      }
-   
+   if (IoStatusBlock)
+   {
+     *IoStatusBlock = IoSB;
+   }
    ExFreePool(SystemBuffer);
    
    return(Status);