Linux force feedback wheel support

[jdeneux]

thelusiv, I looked into this a long time ago when I wanted to integrate FF into the SDL, or at least make my FF code collaborate with SDL.
SDL can use /dev/input/jsX or /dev/input/eventX depending on how it's compiled. If it uses the second method, then extending the SDL_Joystick (or whatever it's called) to support FF would be easy.

I don't know of any non-intrusive method to do what you are trying to do. I think maybe you could use the name of the device (you can retrieve that with SDL, see the joystick test app in SDL's source code).
Then I think maybe you can also retrieve the name of the joystick through /dev/input/eventX. Then it's just a matter of iterating over the files in /dev/input/eventX and looking for a name match.

That method is not perfect, I don't think one should assume event devices are named /dev/input/eventX. Another problem is that it does not work if you have two devices with the same name (e.g. two "anonymous" devices, or two identical devices).