[NFS-Ganesha-Devel] NFS Filtering Adapter

Is there a standard way to add validation on e.g. filename length/type? E.g. if I add a filename thats too long NFS over nfs ganesha will fail. I can add this logic in FSAL CEPH here https://github.com/phdeniel/nfs-ganesha/blob/master/src/FSAL/FSAL_CEPH/ha... but I'm wondering if there's a better way?