smbfs_smb_lookup
int smbfs_smb_lookup(struct smbnode *dnp, const char **namep, int *nmlenp,
error = smbfs_smb_lookup(dnp, &name, &nmlen, &fa, &scred);
error = smbfs_smb_lookup(dnp, &name, &nmlen, &fattr, &scred);
error = smbfs_smb_lookup(dnp, &name, &nmlen, &fattr, &scred);
error = smbfs_smb_lookup(pnp, &name, &nlen, fap, scrp);