[PATCH 17/16] net: Disable netfilter sockopts when not in the initial network namespace

[ebiederm@xmission.com (Eric W. Biederman)]

Until we support multiple network namespaces with netfilter only allow
netfilter configuration in the initial network namespace.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
---

Ooops I overlooked this one on my first path through when gathering up this
patchset.

 net/netfilter/nf_sockopt.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)

diff --git a/net/netfilter/nf_sockopt.c b/net/netfilter/nf_sockopt.c
index 8b8ece7..c12ea9b 100644
--- a/net/netfilter/nf_sockopt.c
+++ b/net/netfilter/nf_sockopt.c
@@ -80,6 +80,9 @@ static int nf_sockopt(struct sock *sk, int pf, int val,
 	struct nf_sockopt_ops *ops;
 	int ret;
 
+	if (sk->sk_net != &init_net)
+		return -ENOPROTOOPT;
+
 	if (mutex_lock_interruptible(&nf_sockopt_mutex) != 0)
 		return -EINTR;
 
@@ -138,6 +141,10 @@ static int compat_nf_sockopt(struct sock *sk, int pf, int val,
 	struct nf_sockopt_ops *ops;
 	int ret;
 
+	if (sk->sk_net != &init_net)
+		return -ENOPROTOOPT;
+
+
 	if (mutex_lock_interruptible(&nf_sockopt_mutex) != 0)
 		return -EINTR;
 
-- 
1.5.3.rc6.17.g1911