bug reported by nelson

cc9c9814 · kaashoek · 4b5443c3 · cc9c9814
--- a/BUGS
+++ b/BUGS
@@ -52,4 +52,7 @@ ide.c: synchronous disk write -> polling disk write.  search for
 fs.c: split all name operations off in name.c?  (starting with namei but move 
      wdir keep in fs.c)

+      unlink . and .. should be disallowed
+
 ls.c: apply tim's patch
+