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authorDenis V. Lunev <den@openvz.org>2007-12-01 00:21:31 +1100
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:54:24 -0800
commitb854272b3c732316676e9128f7b9e6f1e1ff88b0 (patch)
treec90c74b9ec068453881f1173da4c57d6bb00a7d9 /net/bridge/br_netlink.c
parentad5d20a63940fcfb40af76ba06148f36d5d0b433 (diff)
downloadlinux-stericsson-b854272b3c732316676e9128f7b9e6f1e1ff88b0.tar.gz
[NET]: Modify all rtnetlink methods to only work in the initial namespace (v2)
Before I can enable rtnetlink to work in all network namespaces I need to be certain that something won't break. So this patch deliberately disables all of the rtnletlink methods in everything except the initial network namespace. After the methods have been audited this extra check can be disabled. Changes from v1: - added IPv6 addrlabel protection Signed-off-by: Denis V. Lunev <den@openvz.org> Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'net/bridge/br_netlink.c')
-rw-r--r--net/bridge/br_netlink.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c
index 53ab8e0cb518..a4ffa2b63cd5 100644
--- a/net/bridge/br_netlink.c
+++ b/net/bridge/br_netlink.c
@@ -13,6 +13,7 @@
#include <linux/kernel.h>
#include <net/rtnetlink.h>
#include <net/net_namespace.h>
+#include <net/sock.h>
#include "br_private.h"
static inline size_t br_nlmsg_size(void)
@@ -107,9 +108,13 @@ errout:
*/
static int br_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct net *net = skb->sk->sk_net;
struct net_device *dev;
int idx;
+ if (net != &init_net)
+ return 0;
+
idx = 0;
for_each_netdev(&init_net, dev) {
/* not a bridge port */
@@ -135,12 +140,16 @@ skip:
*/
static int br_rtm_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
+ struct net *net = skb->sk->sk_net;
struct ifinfomsg *ifm;
struct nlattr *protinfo;
struct net_device *dev;
struct net_bridge_port *p;
u8 new_state;
+ if (net != &init_net)
+ return -EINVAL;
+
if (nlmsg_len(nlh) < sizeof(*ifm))
return -EINVAL;