From 8a7c811a5bdb7901ad6debcda5fdbfc4ab95a92d Mon Sep 17 00:00:00 2001
From: Garrett Wollman <wollman@FreeBSD.org>
Date: Wed, 23 Nov 1994 20:36:08 +0000
Subject: [PATCH] Don't core on ``root on qq0 and fx0 and yy0'' specifications;
 just take the first one and ignore all the rest, giving a warning message.
 Fixes PR #3.

---
 usr.sbin/config/config.y | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/usr.sbin/config/config.y b/usr.sbin/config/config.y
index 9a041d066d4b..6773073e1042 100644
--- a/usr.sbin/config/config.y
+++ b/usr.sbin/config/config.y
@@ -67,7 +67,7 @@
 %type	<str>	device_name
 %type	<val>	major_minor
 %type	<val>	arg_device_spec
-%type	<val>	root_device_spec
+%type	<val>	root_device_spec root_device_specs
 %type	<val>	dump_device_spec
 %type	<file>	swap_device_spec
 %type	<file>	comp_device_spec
@@ -112,6 +112,7 @@
 #include "config.h"
 #include <ctype.h>
 #include <stdio.h>
+#include <err.h>
 
 struct	device cur;
 struct	device *curp = 0;
@@ -285,7 +286,7 @@ swap_device_spec:
 	;
 
 root_spec:
-	  ROOT optional_on root_device_spec
+	  ROOT optional_on root_device_specs
 		= {
 			struct file_list *fl = *confp;
 
@@ -296,6 +297,15 @@ root_spec:
 		}
 	;
 
+root_device_specs:
+	  root_device_spec AND root_device_specs
+		= {
+			warnx("extraneous root devices ignored");
+			$$ = $1;
+		  }
+	| root_device_spec
+	;
+
 root_device_spec:
 	  device_name
 		= { $$ = nametodev($1, 0, 'a'); }