drivers/filesystems/cdfs/devctrl.c

   1 /*
   2  * COPYRIGHT:        See COPYING in the top level directory
   3  * PROJECT:          ReactOS kernel
   4  * FILE:             drivers/filesystems/cdfs/devctrl.c
   5  * PURPOSE:          CDROM (ISO 9660) filesystem driver
   6  * PROGRAMMER:       Pierre Schweitzer
   7  *
   8  */
   9
  10 /* INCLUDES *****************************************************************/
  11
  12 #include "cdfs.h"
  13
  14 #define NDEBUG
  15 #include <debug.h>
  16
  17 /* FUNCTIONS ****************************************************************/
  18
  19 NTSTATUS NTAPI
  20 CdfsDeviceControl(PDEVICE_OBJECT DeviceObject,
  21                   PIRP Irp)
  22 {
  23     NTSTATUS Status;
  24     PVCB Vcb = NULL;
  25     PFILE_OBJECT FileObject;
  26     PIO_STACK_LOCATION Stack = IoGetCurrentIrpStackLocation(Irp);
  27
  28     UNREFERENCED_PARAMETER(DeviceObject);
  29
  30     FileObject = Stack->FileObject;
  31     Irp->IoStatus.Information = 0;
  32
  33     /* FIXME: HACK, it means that CD has changed */
  34     if (!FileObject)
  35     {
  36         DPRINT1("FIXME: CdfsDeviceControl called without FileObject!\n");
  37         Irp->IoStatus.Status = STATUS_INVALID_DEVICE_REQUEST;
  38         IoCompleteRequest(Irp, IO_NO_INCREMENT);
  39         return STATUS_INVALID_DEVICE_REQUEST;
  40     }
  41
  42     /* Only support such operations on volume */
  43     if (!(FileObject->RelatedFileObject == NULL || FileObject->RelatedFileObject->FsContext2 != NULL))
  44     {
  45         Irp->IoStatus.Status = STATUS_INVALID_PARAMETER;
  46         IoCompleteRequest(Irp, IO_NO_INCREMENT);
  47         return STATUS_INVALID_PARAMETER;
  48     }
  49
  50     if (Stack->Parameters.DeviceIoControl.IoControlCode == IOCTL_CDROM_DISK_TYPE)
  51     {
  52         /* We should handle this one, but we don't! */
  53         Status = STATUS_NOT_IMPLEMENTED;
  54         Irp->IoStatus.Status = Status;
  55         IoCompleteRequest(Irp, IO_NO_INCREMENT);
  56     }
  57     else
  58     {
  59         /* Pass it to storage driver */
  60         IoSkipCurrentIrpStackLocation(Irp);
  61         Vcb = (PVCB)Stack->DeviceObject->DeviceExtension;
  62         Status = IoCallDriver(Vcb->StorageDevice, Irp);
  63     }
  64
  65     return Status;
  66 }