power.cpp

武安河书第一版（vxd）Windows 驱动例子

#include "co_proc.h"

NTSTATUS Co_procPower(IN PDEVICE_OBJECT fdo,IN PIRP Irp){
	PCO_PROC_DEVICE_EXTENSION dx=(PCO_PROC_DEVICE_EXTENSION)fdo->DeviceExtension;
	if(dx->PnpState<Started) return CompleteIrp(Irp,STATUS_DEVICE_NOT_CONNECTED,0);
	NTSTATUS status=IoAcquireRemoveLock(&dx->CountOfUse,Irp);
	if(!NT_SUCCESS(status)) return CompleteIrp(Irp,STATUS_DELETE_PENDING,0);
	status=STATUS_SUCCESS;
	PoStartNextPowerIrp(Irp);
	IoSkipCurrentIrpStackLocation(Irp);
	status=PoCallDriver(dx->NextStackDevice,Irp);
	IoReleaseRemoveLock(&dx->CountOfUse,Irp);
	return status;
}