struct usb_device
{
    struct usb_device *next, *prev;

    char filename[LIBUSB_PATH_MAX];

    struct usb_bus *bus;

    struct usb_device_descriptor descriptor;  # Frage 1
    struct usb_config_descriptor *config;

    void *dev;		/* Darwin support */  # Frage 2

    unsigned char devnum;

    unsigned char num_children;
    struct usb_device **children;
};