usb_ioctl
status_t (*usb_ioctl)(uint32 opcode, void *buffer,
status_t (*usb_ioctl)(uint32 opcode, void *buffer,
usb_ioctl, // usb_ioctl
status_t (*usb_ioctl)(uint32 opcode, void *,size_t);
usb_ioctl // usb_ioctl
if (gUSBModule->usb_ioctl('DNAM', deviceName, sizeof(deviceName)) >= B_OK) {