ns proc: Add support for the network namespace.
Implementing file descriptors for the network namespace
is simple and straight forward.
Acked-by: David S. Miller <davem@davemloft.net>
Acked-by: Daniel Lezcano <daniel.lezcano@free.fr>
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 3f86026..bf7707e 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -573,3 +573,34 @@
mutex_unlock(&net_mutex);
}
EXPORT_SYMBOL_GPL(unregister_pernet_device);
+
+#ifdef CONFIG_NET_NS
+static void *netns_get(struct task_struct *task)
+{
+ struct net *net;
+ rcu_read_lock();
+ net = get_net(task->nsproxy->net_ns);
+ rcu_read_unlock();
+ return net;
+}
+
+static void netns_put(void *ns)
+{
+ put_net(ns);
+}
+
+static int netns_install(struct nsproxy *nsproxy, void *ns)
+{
+ put_net(nsproxy->net_ns);
+ nsproxy->net_ns = get_net(ns);
+ return 0;
+}
+
+const struct proc_ns_operations netns_operations = {
+ .name = "net",
+ .type = CLONE_NEWNET,
+ .get = netns_get,
+ .put = netns_put,
+ .install = netns_install,
+};
+#endif