IoCopyCurrentIrpStackLocationToNext - NtDoc
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headers
// wdm.h
VOID IoCopyCurrentIrpStackLocationToNext(
[in, out] PIRP Irp
);
View the official Windows Driver Kit DDI referenceNo description available.
The IoCopyCurrentIrpStackLocationToNext routine copies the IRP stack parameters from the current I/O stack location to the stack location of the next-lower driver.
Irp [in, out]A pointer to the IRP.
A driver calls IoCopyCurrentIrpStackLocationToNext to copy the IRP parameters from its stack location to the next-lower driver's stack location.
After calling this routine, a driver typically sets an I/O completion routine with IoSetCompletionRoutine before passing the IRP to the next-lower driver with IoCallDriver. Drivers that pass on their IRP parameters but do not set an I/O completion routine should call IoSkipCurrentIrpStackLocation instead of this routine.
If your driver calls IoSkipCurrentIrpStackLocation, be careful not to modify the IO_STACK_LOCATION structure in a way that could unintentionally affect the lower driver or the system's behavior with respect to that driver. In particular, your driver should not modify the IO_STACK_LOCATION structure's Parameters union, and should not call the IoMarkIrpPending routine.