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Added support for IOCTL_CDROM_READ_TOC.

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svn path=/trunk/; revision=3505
This commit is contained in:
Hartmut Birr 2002-09-15 22:19:16 +00:00
parent c9aa7a8462
commit c7c45f9bac
2 changed files with 99 additions and 3 deletions
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76
reactos/drivers/storage/cdrom/cdrom.c
View file

@ -16,7 +16,7 @@
* along with this program; if not, write to the Free Software * along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/ */
/* $Id: cdrom.c,v 1.14 2002/09/08 10:22:22 chorns Exp $ /* $Id: cdrom.c,v 1.15 2002/09/15 22:19:16 hbirr Exp $
* *
* COPYRIGHT: See COPYING in the top level directory * COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
@ -512,7 +512,45 @@ CdromClassCreateDeviceObject(IN PDRIVER_OBJECT DriverObject,
return(STATUS_SUCCESS); return(STATUS_SUCCESS);
} }
/**********************************************************************
* NAME
* CdromClassReadTocEntry
*
* ARGUMENTS:
* DeviceObject
* TrackNo
* Buffer
* Length
*
* RETURNS:
* Status.
*/
static NTSTATUS
CdromClassReadTocEntry(PDEVICE_OBJECT DeviceObject, UINT TrackNo, PVOID Buffer, UINT Length)
{
PDEVICE_EXTENSION DeviceExtension = (PDEVICE_EXTENSION)DeviceObject->DeviceExtension;
SCSI_REQUEST_BLOCK Srb;
PCDB Cdb;
RtlZeroMemory(&Srb, sizeof(SCSI_REQUEST_BLOCK));
Srb.CdbLength = 10;
Srb.TimeOutValue = DeviceExtension->TimeOutValue;
Cdb = (PCDB)Srb.Cdb;
Cdb->READ_TOC.OperationCode = SCSIOP_READ_TOC;
Cdb->READ_TOC.StartingTrack = TrackNo;
Cdb->READ_TOC.Format = 0;
Cdb->READ_TOC.AllocationLength[0] = Length >> 8;
Cdb->READ_TOC.AllocationLength[1] = Length & 0xff;
Cdb->READ_TOC.Msf = 1;
return ScsiClassSendSrbSynchronous(DeviceObject,
&Srb,
Buffer,
Length,
FALSE);
}
/********************************************************************** /**********************************************************************
* NAME EXPORTED * NAME EXPORTED
@ -586,7 +624,43 @@ CdromClassDeviceControl(IN PDEVICE_OBJECT DeviceObject,
} }
} }
break; break;
case IOCTL_CDROM_READ_TOC:
DPRINT("IOCTL_CDROM_READ_TOC\n");
if (IrpStack->Parameters.DeviceIoControl.OutputBufferLength < sizeof(CDROM_TOC))
{
Status = STATUS_INFO_LENGTH_MISMATCH;
}
else
{
PCDROM_TOC TocBuffer;
USHORT Length;
TocBuffer = Irp->AssociatedIrp.SystemBuffer;
/* First read the lead out */
Length = 4 + sizeof(TRACK_DATA);
Status = CdromClassReadTocEntry(DeviceObject, 0xaa, TocBuffer, Length);
if (NT_SUCCESS(Status))
{
if (TocBuffer->FirstTrack == 0xaa)
{
/* there is an empty cd */
Information = Length;
}
else
{
/* read the toc */
Length = 4 + sizeof(TRACK_DATA) * (TocBuffer->LastTrack - TocBuffer->FirstTrack + 2);
Status = CdromClassReadTocEntry(DeviceObject, TocBuffer->FirstTrack, TocBuffer, Length);
if (NT_SUCCESS(Status))
{
Information = Length;
}
}
}
}
break;
default: default:
/* Call the common device control function */ /* Call the common device control function */
return(ScsiClassDeviceControl(DeviceObject, Irp)); return(ScsiClassDeviceControl(DeviceObject, Irp));

26
reactos/include/ntos/cdrom.h
View file

@ -1,4 +1,4 @@
/* $Id: cdrom.h,v 1.1 2002/04/10 17:00:52 ekohl Exp $ /* $Id: cdrom.h,v 1.2 2002/09/15 22:19:16 hbirr Exp $
* *
* COPYRIGHT: See COPYING in the top level directory * COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel * PROJECT: ReactOS kernel
@ -12,8 +12,30 @@
#ifndef __INCLUDE_NTOS_CDROM_H #ifndef __INCLUDE_NTOS_CDROM_H
#define __INCLUDE_NTOS_CDROM_H #define __INCLUDE_NTOS_CDROM_H
#define IOCTL_CDROM_READ_TOC CTL_CODE(FILE_DEVICE_CD_ROM, 0x0000, METHOD_BUFFERED, FILE_READ_ACCESS)
#define IOCTL_CDROM_GET_DRIVE_GEOMETRY CTL_CODE(FILE_DEVICE_CD_ROM, 0x0013, METHOD_BUFFERED, FILE_READ_ACCESS)
#define MAXIMUM_NUMBER_TRACKS 100
#define MAXIMUM_CDROM_SIZE 804
typedef struct _TRACK_DATA {
UCHAR Reserved;
UCHAR Control : 4;
UCHAR Adr : 4;
UCHAR TrackNumber;
UCHAR Reserved1;
UCHAR Address[4];
} TRACK_DATA, *PTRACK_DATA;
typedef struct _CDROM_TOC {
UCHAR Length[2];
UCHAR FirstTrack;
UCHAR LastTrack;
TRACK_DATA TrackData[MAXIMUM_NUMBER_TRACKS];
} CDROM_TOC, *PCDROM_TOC;
#define CDROM_TOC_SIZE sizeof(CDROM_TOC)
#define IOCTL_CDROM_GET_DRIVE_GEOMETRY CTL_CODE(FILE_DEVICE_CD_ROM, 0x0013, METHOD_BUFFERED, FILE_READ_ACCESS)
#endif /* __INCLUDE_NTOS_CDROM_H */ #endif /* __INCLUDE_NTOS_CDROM_H */