From your description I don’t see why that can’t be implemented as a device driver and a set of ioctl calls. https://en.wikipedia.org/wiki/Ioctl https://en.wiki

From your description I don’t see why that can’t be implemented as a device driver and a set of ioctl calls. https://en.wikipedia.org/wiki/Ioctl https://en.wikipedia.org/wiki/Ioctl: “In computing, ioctl (an abbreviation of input/output control) is a system call for device-specific input/output operations and other operations which cannot be expressed by regular system calls. It takes a parameter specifying a request code; the effect of a call depends completely on the request code. Request codes are often device-specific. For instance, a CD-ROM device driver which can instruct a physical device to eject a disc would provide an ioctl request code to do so.”