From: David S. Miller <davem@davemloft.net>
Date: Wed, 28 Jan 2009 06:41:03 +0000 (-0800)
Subject: ipv6: Make mc_forwarding sysctl read-only.
X-Git-Tag: v6.6-pxa1908~40760^2~15
X-Git-Url: https://git.dujemihanovic.xyz/?a=commitdiff_plain;h=a4e6db07984529847c6ad8bc616485e721dcb809;p=linux.git

ipv6: Make mc_forwarding sysctl read-only.

The kernel manages this value internally, as necessary, as
VIFs are added/removed and as multicast routers are registered
and deregistered.

Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index e92ad8455c63..f9afb452249c 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -4250,7 +4250,7 @@ static struct addrconf_sysctl_table
 			.procname	=	"mc_forwarding",
 			.data		=	&ipv6_devconf.mc_forwarding,
 			.maxlen		=	sizeof(int),
-			.mode		=	0644,
+			.mode		=	0444,
 			.proc_handler	=	proc_dointvec,
 		},
 #endif