VOID
TdiBuildAction (
IN PIRP Irp,
IN PDEVICE_OBJECT DeviceObject,
IN PFILE_OBJECT FileObject,
IN PVOID CompletionRoutine,
IN PVOID Context,
IN PMDL MdlAddress
);
TdiBuildAction builds an IRP containing a TDI_ACTION 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 TdiBuildAction places the parameter list. IRP members related to the action request are:
| IRP Component | Meaning |
| IoStatus.Status | Specifies the final status of the action request. |
| IoStatus.Information | Contains the number of data bytes the internal driver action function writes. |
| IrpSp->MajorFunction | Specifies IRP_MJ_INTERNAL_DEVICE_CONTROL. |
| IrpSp->MinorFunction | Specifies TDI_ACTION. |
| IrpSp->FileObject | Points to an address, connection endpoint, or control channel file object. |
| MdlAddress | Points to a chain of MDLs describing the action parameter block. |
| IrpSp->Parameters | Unused. |
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.
MdlAddress
Points to the MDL chain describing the action parameter block.
See Also