[PATCH libdrm] libdrm: Fix drmNodeIsDRM() on DragonFly

[Emil Velikov]

On Tue, 11 Dec 2018 at 22:15, François Tigeot <ftigeot at wolfpond.org> wrote:
>
> * There is no way to check if a device name is really a drm device
>   by looking it up in a virtual filesystem like on Linux
>
> * The major device number is also dynamically allocated from a pool,
>   comparing it to a constant makes no sense
>
> * In the absence of better ideas, just assume the device name really
>   points to a drm device and always return true
>
I guess one could use the sysfs path, although that may require a few
extra lines to the linux emulation layer.

What's the reason behind the dynamic allocation of the major? FWIW
some userspace requires a fixed DRM_MAJOR - they will need patching to
run :-(

Thanks
Emil