-extern int rpc_rmdir(char *);
-extern struct dentry *rpc_mkpipe(char *, void *, struct rpc_pipe_ops *, int flags);
-extern int rpc_unlink(char *);
+extern int rpc_rmdir(struct dentry *);
+extern struct dentry *rpc_mkpipe(struct dentry *, const char *, void *, struct rpc_pipe_ops *, int flags);
+extern int rpc_unlink(struct dentry *);
+extern struct vfsmount *rpc_get_mount(void);
+extern void rpc_put_mount(void);