Add kern.conf_dir sysctl. This is a R+W string used to specify the

directory containing rc.conf.local and rc.local, and possibly other
    things in the future.

    This sysctl is used by the diskless startup code and new rc.conf.  If
    it cannot be found or is empty, the system should revert to using /etc.

sys/kern/kern_mib.c

@@ -37,7 +37,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)kern_sysctl.c	8.4 (Berkeley) 4/14/94
- * $Id: kern_mib.c,v 1.15 1998/03/28 11:49:52 dufault Exp $
+ * $Id: kern_mib.c,v 1.16 1998/08/31 08:41:52 kato Exp $
  */
 
 #include <sys/param.h>
@@ -127,6 +127,11 @@ char hostname[MAXHOSTNAMELEN];
 SYSCTL_STRING(_kern, KERN_HOSTNAME, hostname, CTLFLAG_RW,
 	hostname, sizeof(hostname), "");
 
+char conf_dir[64];
+
+SYSCTL_STRING(_kern, OID_AUTO, conf_dir, CTLFLAG_RW,
+	conf_dir, sizeof(conf_dir), "");
+
 int securelevel = -1;
 
 static int