Kill -r. Union makes for a poor nullfs.

Author: doranand

sbin/mount_union/mount_union.8

@@ -1,4 +1,4 @@
-.\"	$NetBSD: mount_union.8,v 1.17 2007/08/01 08:52:07 pooka Exp $
+.\"	$NetBSD: mount_union.8,v 1.18 2008/02/05 16:54:07 ad Exp $
 .\"
 .\" Copyright (c) 1994
 .\" The Regents of the University of California.  All rights reserved.
@@ -32,15 +32,15 @@
 .\"
 .\"	@(#)mount_union.8	8.7 (Berkeley) 5/1/95
 .\"
-.Dd August 1, 2007
+.Dd Febuary 5, 2008
 .Dt MOUNT_UNION 8
 .Os
 .Sh NAME
 .Nm mount_union
 .Nd mount union filesystems
 .Sh SYNOPSIS
 .Nm
-.Op Fl br
+.Op Fl b
 .Op Fl o Ar options
 .Ar directory
 .Ar uniondir
@@ -86,9 +86,6 @@ flag followed by a comma separated string of options.
 See the
 .Xr mount 8
 man page for possible options and their meanings.
-.It Fl r
-Hide the lower layer completely in the same way as mounting with
-.Xr mount_null 8 .
 .El
 .Pp
 Filenames are looked up in the upper layer and then in the

sbin/mount_union/mount_union.c

@@ -1,4 +1,4 @@
-/*	$NetBSD: mount_union.c,v 1.19 2007/07/16 17:06:55 pooka Exp $	*/
+/*	$NetBSD: mount_union.c,v 1.20 2008/02/05 16:54:07 ad Exp $	*/
 
 /*
  * Copyright (c) 1992, 1993, 1994
@@ -42,7 +42,7 @@ __COPYRIGHT("@(#) Copyright (c) 1992, 1993, 1994\n\
 #if 0
 static char sccsid[] = "@(#)mount_union.c	8.6 (Berkeley) 4/26/95";
 #else
-__RCSID("$NetBSD: mount_union.c,v 1.19 2007/07/16 17:06:55 pooka Exp $");
+__RCSID("$NetBSD: mount_union.c,v 1.20 2008/02/05 16:54:07 ad Exp $");
 #endif
 #endif /* not lint */
 
@@ -89,7 +89,7 @@ mount_union(int argc, char *argv[])
 
 	mntflags = 0;
 	args.mntflags = UNMNT_ABOVE;
-	while ((ch = getopt(argc, argv, "bo:r")) != -1)
+	while ((ch = getopt(argc, argv, "bo:")) != -1)
 		switch (ch) {
 		case 'b':
 			args.mntflags &= ~UNMNT_OPMASK;
@@ -101,10 +101,6 @@ mount_union(int argc, char *argv[])
 				err(1, "getmntopts");
 			freemntopts(mp);
 			break;
-		case 'r':
-			args.mntflags &= ~UNMNT_OPMASK;
-			args.mntflags |= UNMNT_REPLACE;
-			break;
 		case '?':
 		default:
 			usage();