+struct mount_options;
+
+int nfs_nfs_proto_family(struct mount_options *options, sa_family_t *family);
+int nfs_mount_proto_family(struct mount_options *options, sa_family_t *family);
+int nfs_nfs_version(struct mount_options *options, unsigned long *version);
+int nfs_nfs_protocol(struct mount_options *options, unsigned long *protocol);
+
+int nfs_options2pmap(struct mount_options *,
+ struct pmap *, struct pmap *);
+