问如何使用libusb获取驱动器名？

EN

#define VID             0x4444
#define PID             0x0001
#define PID_FILE        0x1000

//..

libusb_device **devs;
uint8_t i = 0;
uint8_t path[9];
std::string devices;

libusb_init(&ctx);
libusb_get_device_list(ctx, &devs);

while ((dev = devs[i++]) != NULL)
{
    struct libusb_device_descriptor desc;
    uint8_t r = libusb_get_device_descriptor(dev, &desc);
    r = libusb_get_port_numbers(dev, path, SIZE_PATH);

    if (desc.idVendor == VID && (desc.idProduct == PID || desc.idProduct == PID_FILE))
    {
        printf("%04x:%04x (bus %d, device %d)\n",
            desc.idVendor, desc.idProduct,
            libusb_get_bus_number(dev), libusb_get_device_address(dev));

        path[8] = libusb_get_port_numbers(dev, path, SIZE_PATH);
        path[path[8]] = libusb_get_bus_number(dev);

        for (uint8_t g = 0; g < 9; g++) {
            devices += format("X%x", path[g]);
        }

        devices += ",";
    }
}