VOID
TdiBuildQueryInformation (
IN PIRP Irp,
IN PDEVICE_OBJECT DeviceObject,
IN PFILE_OBJECT FileObject,
IN PVOID CompletionRoutine,
IN PVOID Context,
IN UINT QueryType,
IN PMDL MdlAddress
);
TdiBuildQueryInformation builds an IRP containing a TDI_QUERY_INFORMATION request message. It sets up the request message in the minor function code member of the I/O stack location and sets IRP_MJ_INTERNAL_DEVICE_CONTROL as a major function code.
Parameters
Irp
Points to the I/O stack location for the kernel-mode client IRP. The current stack location must point to the location in which TdiBuildQueryInformation places the parameter list. IRP members related to the query information request are:
| IRP Component | Meaning |
| IoStatus.Status | Specifies the final status of the query information request. |
| IoStatus.Information | Contains the number of data bytes the driver receives. |
| IrpSp->MajorFunction | Specifies IRP_MJ_INTERNAL_DEVICE_CONTROL. |
| IrpSp->MinorFunction | Specifies TDI_QUERY_INFORMATION. |
| IrpSp->FileObject | Points to an address, connection endpoint, or control channel file object. |
| MdlAddress | Points to a chain of MDLs describing the buffer to contain information that the internal driver query information function writes. |
| IrpSp->Parameters | Points to a TDI_REQUEST_KERNEL_QUERY_INFORMATION structure containing the query type for a kernel-mode client request. For query types, see the description of TDI_QUERY_INFORMATION. |
DeviceObject
Points to the device object that describes the TDI driver.
FileObject
Points to an address, connection endpoint, or control channel file object.
CompletionRoutine
Points to the client completion function the I/O subsystem can call when I/O is complete. This parameter must be NULL if the I/O subsystem calls no completion function.
Context
Points to the context the client associates with its completion function.
QueryType
Specifies the query type (see TDI_QUERY_INFORMATION).
MdlAddress
Points to the MDL chain describing the data the internal TDI driver query information function writes.
See Also