IOCTL_TAPE_GET_MEDIA_PARAMS IOCTL

Returns information about the media's total and remaining capacity, its block size, the number of partitions, and whether it is write-protected.

Major Code

IRP_MJ_DEVICE_CONTROL

Input Buffer

None.

Input Buffer Length

None.

Output Buffer

The driver returns the TAPE_GET_MEDIA_PARAMETERS data in the buffer at Irp->AssociatedIrp.SystemBuffer. For a description of the TAPE_GET_MEDIA_PARAMETERS structure, see TapeMiniGetMediaParameters.

Output Buffer Length

Parameters.DeviceIoControl.OutputBufferLength in the I/O stack location indicates the size, in bytes, of the parameter buffer, which must be >= sizeof(TAPE_GET_MEDIA_PARAMETERS).

Status Block

The Information field is set to the number of bytes returned. The Status field is set to STATUS_SUCCESS, or possibly to STATUS_IO_DEVICE_ERROR, STATUS_DEVICE_DATA_ERROR, STATUS_DATA_OVERRUN, STATUS_NO_SUCH_DEVICE, STATUS_IO_TIMEOUT, STATUS_DEVICE_NOT_READY, STATUS_INFO_LENGTH_MISMATCH, STATUS_NO_MEDIA_IN_DEVICE, or STATUS_VERIFY_REQUIRED.

Requirements

   
Header ntddtape.h (include Ntddtape.h)

See Also

TAPE_GET_MEDIA_PARAMETERS

TAPE_STATUS

TapeMiniGetMediaParameters