給個usb的DriverEntry範例

以下是一个简单的 USB 驱动程序的 DriverEntry 函数示例：

#include <ntddk.h>
#include <usb.h>

NTSTATUS DriverEntry(PDRIVER_OBJECT DriverObject, PUNICODE_STRING RegistryPath)
{
    NTSTATUS status = STATUS_SUCCESS;
    PDEVICE_OBJECT deviceObject = NULL;
    UNICODE_STRING deviceName;
    UNICODE_STRING symbolicLinkName;

    RtlInitUnicodeString(&deviceName, L"\\Device\\MyUSBDevice");
    RtlInitUnicodeString(&symbolicLinkName, L"\\DosDevices\\MyUSBDevice");

    status = IoCreateDevice(DriverObject,
                            0,
                            &deviceName,
                            FILE_DEVICE_UNKNOWN,
                            FILE_DEVICE_SECURE_OPEN,
                            FALSE,
                            &deviceObject);
    if (NT_SUCCESS(status))
    {
        status = IoCreateSymbolicLink(&symbolicLinkName, &deviceName);
        if (NT_SUCCESS(status))
        {
            // 在这里进行 USB 初始化操作，例如打开 USB 控制器、初始化 USB 栈等
            // ...

            // 注册 USB 设备接口
            USB_DEVICE_DESCRIPTOR deviceDescriptor;
            USBD_INTERFACE_LIST_ENTRY interfaceList[2];

            interfaceList[0].InterfaceClassGuid = GUID_CLASS_USB_DEVICE;
            interfaceList[0].InterfaceReference = NULL;
            interfaceList[0].InterfaceStructSize = sizeof(USBD_INTERFACE_LIST_ENTRY);
            interfaceList[0].InterfaceSubClass = 0;
            interfaceList[0].InterfaceProtocol = 0;
            interfaceList[0].Reserved = 0;

            interfaceList[1].InterfaceClassGuid = GUID_NULL;
            interfaceList[1].InterfaceReference = NULL;
            interfaceList[1].InterfaceStructSize = sizeof(USBD_INTERFACE_LIST_ENTRY);
            interfaceList[1].InterfaceSubClass = 0;
            interfaceList[1].InterfaceProtocol = 0;
            interfaceList[1].Reserved = 0;

            USB_DEVICE_CREATE_PARAMS createParams;
            RtlZeroMemory(&createParams, sizeof(createParams));
            createParams.SelfSize = sizeof(createParams);
            createParams.Version = USB_DEVICE_CREATE_PARAMS_VERSION_1;
            createParams.DeviceDescriptor = &deviceDescriptor;
            createParams.InterfaceList = interfaceList;
            createParams.MiniportDriverResources = NULL;
            createParams.MiniportDriverResourcesLength = 0;

            // 填充设备描述符
            deviceDescriptor.bLength = sizeof(deviceDescriptor);
            deviceDescriptor.bDescriptorType = USB_DEVICE_DESCRIPTOR_TYPE;
            deviceDescriptor.bcdUSB = 0x0200;
            deviceDescriptor.bDeviceClass = 0;
            deviceDescriptor.bDeviceSubClass = 0;
            deviceDescriptor.bDeviceProtocol = 0;
            deviceDescriptor.bMaxPacketSize0 = 64;
            deviceDescriptor.idVendor = 0x1234;
            deviceDescriptor.idProduct = 0x5678;
            deviceDescriptor.bcdDevice = 0x0100;
            deviceDescriptor.iManufacturer = 0;
            deviceDescriptor.iProduct = 0;
            deviceDescriptor.iSerialNumber = 0;
            deviceDescriptor.bNumConfigurations = 1;

            status = IoRegisterDeviceInterface(deviceObject,
                                                &GUID_CLASS_USB_DEVICE,
                                                NULL,
                                                &createParams.InterfaceList[0].InterfaceClassGuid);
            if (NT_SUCCESS(status))
            {
                // 在这里进行 USB 设备初始化操作，例如打开 USB 设备、分配 USB 端点等
                // ...

                // 注册 I/O 处理程序
                DriverObject->MajorFunction[IRP_MJ_CREATE] = MyUsbCreate;
                DriverObject->MajorFunction[IRP_MJ_CLOSE] = MyUsbClose;
                DriverObject->MajorFunction[IRP_MJ_DEVICE_CONTROL] = MyUsbDeviceControl;
            }
            else
            {
                IoDeleteSymbolicLink(&symbolicLinkName);
                IoDeleteDevice(deviceObject);
            }
        }
        else
        {
            IoDeleteDevice(deviceObject);
        }
    }

    return status;
}

需要注意的是，这只是一个简单的示例，实际的 USB 驱动程序可能需要更复杂的初始化和设备管理操作。此外，还需要实现 MyUsbCreate、MyUsbClose 和 MyUsbDeviceControl 等 I/O 处理程序来处理设备请求。