reactos/drivers/dd/green/misc.c

   1 /* $Id:
   2  *
   3  * COPYRIGHT:       See COPYING in the top level directory
   4  * PROJECT:         ReactOS VT100 emulator
   5  * FILE:            drivers/dd/green/misc.c
   6  * PURPOSE:         Misceallenous operations
   7  *
   8  * PROGRAMMERS:     Hervé Poussineau (hpoussin@reactos.com)
   9  */
  10
  11 //#define NDEBUG
  12 #include "green.h"
  13
  14 NTSTATUS
  15 GreenDeviceIoControl(
  16         IN PDEVICE_OBJECT DeviceObject,
  17         IN ULONG CtlCode,
  18         IN PVOID InputBuffer OPTIONAL,
  19         IN ULONG InputBufferSize,
  20         IN OUT PVOID OutputBuffer OPTIONAL,
  21         IN OUT PULONG OutputBufferSize)
  22 {
  23         KEVENT Event;
  24         PIRP Irp;
  25         IO_STATUS_BLOCK IoStatus;
  26         NTSTATUS Status;
  27
  28         KeInitializeEvent (&Event, NotificationEvent, FALSE);
  29
  30         Irp = IoBuildDeviceIoControlRequest(CtlCode,
  31                 DeviceObject,
  32                 InputBuffer,
  33                 InputBufferSize,
  34                 OutputBuffer,
  35                 (OutputBufferSize) ? *OutputBufferSize : 0,
  36                 FALSE,
  37                 &Event,
  38                 &IoStatus);
  39         if (Irp == NULL)
  40         {
  41                 DPRINT("Green: IoBuildDeviceIoControlRequest() failed\n");
  42                 return STATUS_INSUFFICIENT_RESOURCES;
  43         }
  44
  45         Status = IoCallDriver(DeviceObject, Irp);
  46
  47         if (Status == STATUS_PENDING)
  48         {
  49                 DPRINT("Green: Operation pending\n");
  50                 KeWaitForSingleObject(&Event, Suspended, KernelMode, FALSE, NULL);
  51                 Status = IoStatus.Status;
  52         }
  53
  54         if (OutputBufferSize)
  55         {
  56                 *OutputBufferSize = IoStatus.Information;
  57         }
  58
  59         return Status;
  60 }