[NFS-Ganesha-Devel] Adding validation to NFS operations

I want to add validation to to nfs operations. E.g. if I try to create a filename thats too long over nfs via nfs ganesha, I want nfs to fail. I can add this logic to https://github.com/phdeniel/nfs-ganesha/blob/master/src/FSAL/FSAL_CEPH/handl... and compile ganesha myself, but is there a better way to do it?