reactos/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(
  21     PCDFS_IRP_CONTEXT IrpContext)
  22 {
  23     PIRP Irp;
  24     NTSTATUS Status;
  25     PVCB Vcb = NULL;
  26     PFILE_OBJECT FileObject;
  27     PIO_STACK_LOCATION Stack;
  28
  29     DPRINT("CdfsDeviceControl()\n");
  30
  31     ASSERT(IrpContext);
  32
  33     Irp = IrpContext->Irp;
  34     Stack = IrpContext->Stack;
  35     FileObject = Stack->FileObject;
  36     Irp->IoStatus.Information = 0;
  37
  38     /* FIXME: HACK, it means that CD has changed */
  39     if (!FileObject)
  40     {
  41         DPRINT1("FIXME: CdfsDeviceControl called without FileObject!\n");
  42         return STATUS_INVALID_DEVICE_REQUEST;
  43     }
  44
  45     /* Only support such operations on volume */
  46     if (!(FileObject->RelatedFileObject == NULL || FileObject->RelatedFileObject->FsContext2 != NULL))
  47     {
  48         return STATUS_INVALID_PARAMETER;
  49     }
  50
  51     if (Stack->Parameters.DeviceIoControl.IoControlCode == IOCTL_CDROM_DISK_TYPE)
  52     {
  53         /* We should handle this one, but we don't! */
  54         Status = STATUS_NOT_IMPLEMENTED;
  55     }
  56     else
  57     {
  58         /* Pass it to storage driver */
  59         IoSkipCurrentIrpStackLocation(Irp);
  60         Vcb = (PVCB)Stack->DeviceObject->DeviceExtension;
  61
  62         /* Lower driver will complete - we don't have to */
  63         IrpContext->Flags &= ~IRPCONTEXT_COMPLETE;
  64
  65         Status = IoCallDriver(Vcb->StorageDevice, Irp);
  66     }
  67
  68     return Status;
  69 }