--- Net2/sys/filio.h	2018/04/24 18:10:36	1.1.1.1
+++ Net2/sys/filio.h	2018/04/24 18:16:43	1.1.1.2
@@ -1,3 +1,12 @@
 /*
  * dummy file for SVR4 compatibility -wfj
+ *
+ *	filio.h,v 1.2 1993/05/20 16:22:19 cgd Exp
  */
+
+#ifndef _SYS_FILIO_H
+#define _SYS_FILIO_H
+
+/* do nothing */
+
+#endif /* _SYS_FILIO_H */