Various header changes.
diff --git a/include/plumb.h b/include/plumb.h
index a84344a..06b0aae 100644
--- a/include/plumb.h
+++ b/include/plumb.h
@@ -55,6 +55,13 @@
 int			plumbopen(char*, int);
 int			eplumb(int, char*);
 
+#ifdef _FS_H_
+Fid*		plumbopenfid(char*, int);
+Plumbmsg*	plumbrecvfid(Fid*);
+Plumbmsg*	threadplumbrecvfid(Fid*);
+int		plumbsendtofid(Fid*, Plumbmsg*);
+#endif
+
 #if defined(__cplusplus)
 }
 #endif