From bd6fb64bb3b9f178e5d707daa2119f98c952f04d Mon Sep 17 00:00:00 2001
From: Mike Silbersack <silby@FreeBSD.org>
Date: Tue, 21 Oct 2003 16:48:33 +0000
Subject: [PATCH] Add another sysctl flag, CTLFLAG_TUN, which is a hint to the
 userland sysctl that a given variable is tunable.

Also added is CTLFLAG_RDTUN, which is CTLFLAG_RD|CTLFLAG_TUN; TUN does
not always imply read-only, so RDTUN should be used where RD was used
before.
---
 sys/sys/sysctl.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/sys/sysctl.h b/sys/sys/sysctl.h
index b570b8c3b45..ed20e503098 100644
--- a/sys/sys/sysctl.h
+++ b/sys/sys/sysctl.h
@@ -87,6 +87,8 @@ struct ctlname {
 #define CTLFLAG_DYN	0x02000000	/* Dynamic oid - can be freed */
 #define CTLFLAG_SKIP	0x01000000	/* Skip this sysctl when listing */
 #define CTLMASK_SECURE	0x00F00000	/* Secure level */
+#define CTLFLAG_TUN	0x00080000	/* Tunable variable */
+#define CTLFLAG_RDTUN	(CTLFLAG_RD|CTLFLAG_TUN)
 
 /*
  * Secure level.   Note that CTLFLAG_SECURE == CTLFLAG_SECURE1.