最简单的一个wdm测试

据说有新的wdf 比 wdm 好.....不过我还是地学一学

写了一个最简单的wdm...

WDM比NT式加载有点麻烦..需要个.inf配置文件,,而且有时还要重启系统(可能是我菜吧..不知道其它办法 = =).

这提供那加载工具,,自己下载好了EzDriverInstaller.zip

首先,先定义,其中那个guid由guid.exe工具生成,,,在VC或VS的工具那里有.

#include 
// {D8477C35-5951-4eee-9592-88CCB549EEB4}
DEFINE_GUID(Ternsoft_WDM_DEVICE,0xd8477c35, 0x5951, 0x4eee, 0x95, 0x92, 0x88, 0xcc, 0xb5, 0x49, 0xee, 0xb4);

typedef struct{

	DEVICE_OBJECT *pStackNextDeviceObject;
	UNICODE_STRING ustrSymbolicLinkName;

}DEVICE_EXTENSION;

wdm设备的生成不再在DriverEntry了,

#ifdef __cplusplus
extern "C" {
#endif
NTSTATUS DriverEntry(
    IN OUT PDRIVER_OBJECT   DriverObject,
    IN PUNICODE_STRING      RegistryPath
    )
{

	KdPrint(("DriverEntry"));

    DriverObject->MajorFunction[IRP_MJ_CREATE] =
    DriverObject->MajorFunction[IRP_MJ_CLOSE] = DRIVERWDMTEST_DispatchCreateClose;
    DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = DRIVERWDMTEST_DispatchDeviceControl;
	DriverObject->MajorFunction[IRP_MJ_PNP]=DRIVERWDMTEST_DispatchPnp;
    DriverObject->DriverUnload = DRIVERWDMTEST_DriverUnload;
	DriverObject->DriverExtension->AddDevice=DRIVERWDMTEST_AddDevice;


	KdPrint(("DriverEntry finished"));
    return STATUS_SUCCESS;
}
#ifdef __cplusplus
}; // extern "C"
#endif

而是 DriverObject->DriverExtension->AddDevice=DRIVERWDMTEST_AddDevice 指定在一个方法里.

NTSTATUS DRIVERWDMTEST_AddDevice (
				   __in struct _DRIVER_OBJECT *DriverObject,
				   __in struct _DEVICE_OBJECT *PhysicalDeviceObject
				   )
{
	KdPrint(("DRIVERWDMTEST_AddDevice test wdm haha ternsoft.com"));

	DEVICE_OBJECT *pFunDeviceObject;
	NTSTATUS status=IoCreateDevice(DriverObject,sizeof(DEVICE_EXTENSION),NULL,//木有指定设备名
		FILE_DEVICE_UNKNOWN,0,FALSE,&pFunDeviceObject); 

	if (!NT_SUCCESS(status))
	{
		KdPrint(("IoCreateDevice failed"));
		return status;
	}

	DEVICE_EXTENSION *pDEX=(DEVICE_EXTENSION*)pFunDeviceObject->DeviceExtension;
	pDEX->pStackNextDeviceObject=IoAttachDeviceToDeviceStack(pFunDeviceObject,PhysicalDeviceObject);

	status=IoRegisterDeviceInterface(PhysicalDeviceObject,&Ternsoft_WDM_DEVICE,NULL,&pDEX->ustrSymbolicLinkName);
	if (!NT_SUCCESS(status))
	{
		KdPrint(("IoRegisterDeviceInterface failed"));
		return status;
	}
	KdPrint(("IoRegisterDeviceInterface %wZ",&pDEX->ustrSymbolicLinkName));
	IoSetDeviceInterfaceState(&pDEX->ustrSymbolicLinkName,true);

	pFunDeviceObject->Flags |= DO_BUFFERED_IO | DO_POWER_PAGABLE;
	pFunDeviceObject->Flags &= ~DO_DEVICE_INITIALIZING;

	KdPrint(("DRIVERWDMTEST_AddDevice finished!"));
	return STATUS_SUCCESS;
}

另外我的pnp派遣函数灰常简单...啥事也没做,直接交给下层处理

NTSTATUS DRIVERWDMTEST_DispatchPnp(
	IN PDEVICE_OBJECT		DeviceObject,
	IN PIRP					Irp
	)
{

	KdPrint(("DRIVERWDMTEST_DispatchPnp"));
	DEVICE_EXTENSION *pDEX=(DEVICE_EXTENSION*)DeviceObject->DeviceExtension;
	/*
	NTSTATUS status = STATUS_SUCCESS;
	Irp->IoStatus.Status = status;
	Irp->IoStatus.Information = 0;
	IoCompleteRequest(Irp, IO_NO_INCREMENT);
	return status;
	*/
	IoSkipCurrentIrpStackLocation(Irp);
	return IoCallDriver(pDEX->pStackNextDeviceObject, Irp);
	
}