reactos/drivers/filesystems/fastfat_new/device.c

   1 /*
   2  * PROJECT:         ReactOS FAT file system driver
   3  * LICENSE:         GNU GPLv3 as published by the Free Software Foundation
   4  * FILE:            drivers/filesystems/fastfat/device.c
   5  * PURPOSE:         Device control
   6  * PROGRAMMERS:     Aleksey Bragin (aleksey@reactos.org)
   7  */
   8
   9 /* INCLUDES *****************************************************************/
  10
  11 #define NDEBUG
  12 #include "fastfat.h"
  13
  14 /* FUNCTIONS ****************************************************************/
  15
  16 NTSTATUS
  17 NTAPI
  18 FatDeviceControl(PDEVICE_OBJECT DeviceObject, PIRP Irp)
  19 {
  20     DPRINT1("FatDeviceControl()\n");
  21     return STATUS_NOT_IMPLEMENTED;
  22 }
  23
  24 NTSTATUS
  25 FatPerformDevIoCtrl(PDEVICE_OBJECT DeviceObject,
  26                     ULONG ControlCode,
  27                     PVOID InputBuffer,
  28                     ULONG InputBufferSize,
  29                     PVOID OutputBuffer,
  30                     ULONG OutputBufferSize,
  31                     BOOLEAN Override)
  32 {
  33     PIRP Irp;
  34     KEVENT Event;
  35     NTSTATUS Status;
  36     PIO_STACK_LOCATION Stack;
  37     IO_STATUS_BLOCK IoStatus;
  38
  39     /* Initialize the event for waiting */
  40     KeInitializeEvent(&Event, NotificationEvent, FALSE);
  41
  42     /* Build the device I/O control request */
  43     Irp = IoBuildDeviceIoControlRequest(ControlCode,
  44                                         DeviceObject,
  45                                         InputBuffer,
  46                                         InputBufferSize,
  47                                         OutputBuffer,
  48                                         OutputBufferSize,
  49                                         FALSE,
  50                                         &Event,
  51                                         &IoStatus);
  52
  53     /* Fail if IRP hasn't been allocated */
  54     if (!Irp) return STATUS_INSUFFICIENT_RESOURCES;
  55
  56     /* Set verify override flag if requested */
  57     if (Override)
  58     {
  59         Stack = IoGetNextIrpStackLocation(Irp);
  60         Stack->Flags |= SL_OVERRIDE_VERIFY_VOLUME;
  61     }
  62
  63     /* Call the driver */
  64     Status = IoCallDriver(DeviceObject, Irp);
  65
  66     /* Wait if needed */
  67     if (Status == STATUS_PENDING)
  68     {
  69         KeWaitForSingleObject(&Event, Executive, KernelMode, FALSE, NULL);
  70         Status = IoStatus.Status;
  71     }
  72
  73     return Status;
  74 }
  75
  76 /* EOF */