+int nfs_lookup(const char *hostname, const sa_family_t family,
+ struct sockaddr *sap, socklen_t *salen);
+int nfs_string_to_sockaddr(const char *, struct sockaddr *, socklen_t *);
+int nfs_present_sockaddr(const struct sockaddr *,
+ const socklen_t, char *, const size_t);
+int nfs_callback_address(const struct sockaddr *, const socklen_t,
+ struct sockaddr *, socklen_t *);
+int clnt_ping(struct sockaddr_in *, const unsigned long,
+ const unsigned long, const unsigned int,
+ struct sockaddr_in *);
+
+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 *);