ChangerGetStatus - NtDoc
Native API online documentation, based on the System Informer
(formerly Process Hacker) phnt
headers
// mcd.h
NTSTATUS ChangerGetStatus(
[in] PDEVICE_OBJECT DeviceObject,
[in] PIRP Irp
);
View the official Windows Driver Kit DDI referenceNo description available.
ChangerGetStatus handles the device-specific aspects of a device-control IRP with the IOCTL code IOCTL_CHANGER_GET_STATUS.
DeviceObject [in]Pointer to the device object that represents the changer.
Irp [in]Pointer to the IRP.
ChangerGetStatus returns the STATUS_XXX value returned by the system port driver. If there is not enough memory to process the request or to process the STATUS_XXX value returned by the system port driver ChangerGetStatus returns STATUS_INSUFFICIENT_RESOURCES.
This routine is required.
ChangerGetStatus indicates whether the changer is able to accept requests.
ChangerGetStatus builds an SRB with a CDB to get the changer's status (using the SCSI command TEST UNIT READY or non-SCSI equivalent) and sends it to the system port driver to obtain status of the changer.