nfsm_disct
void *nfsm_disct(struct mbuf **, caddr_t *, int, int, int);
error = nfsm_disct(mdp, dposp, NFSX_FATTR(v3), t1, &cp2);
int nfsm_disct(struct mbuf **, char **, int, int, char **);
} else if ((t1 = nfsm_disct(&md, &dpos, (s), t1, &cp2)) != 0){ \