This IOCTL is used by a user-mode application or kernel-mode driver that requires notification when something of interest happens in the virtual miniport. This IOCTL might be used, for example, when a vendor-specific, time-consuming operation such as device discovery completes.

Major code


Input buffer

The buffer at Irp->AssociatedIrp.SystemBuffer contains a user-defined structure.

Input buffer length

Parameters.DeviceIoControl.InputBufferLength indicates the size, in bytes, of all the input data.

Output buffer

Updated user-defined structures are returned in the buffer at Irp->AssociatedIrp.SystemBuffer.

Output buffer length

The length of the buffer.

Status block

The Information field contains the number of bytes returned in the output buffer. The Status field indicates the results of the operation.


Requirement Value
Header ntddscsi.h (include Ntddscsi.h)

See also