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Diffstat (limited to 'net/core/net_namespace.c')
-rw-r--r--net/core/net_namespace.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 15f68842ac6b..f7b6dda798e0 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -39,9 +39,16 @@ EXPORT_SYMBOL_GPL(net_namespace_list);
DECLARE_RWSEM(net_rwsem);
EXPORT_SYMBOL_GPL(net_rwsem);
+#ifdef CONFIG_KEYS
+static struct key_tag init_net_key_domain = { .usage = REFCOUNT_INIT(1) };
+#endif
+
struct net init_net = {
.count = REFCOUNT_INIT(1),
.dev_base_head = LIST_HEAD_INIT(init_net.dev_base_head),
+#ifdef CONFIG_KEYS
+ .key_domain = &init_net_key_domain,
+#endif
};
EXPORT_SYMBOL(init_net);
@@ -387,10 +394,22 @@ static struct net *net_alloc(void)
if (!net)
goto out_free;
+#ifdef CONFIG_KEYS
+ net->key_domain = kzalloc(sizeof(struct key_tag), GFP_KERNEL);
+ if (!net->key_domain)
+ goto out_free_2;
+ refcount_set(&net->key_domain->usage, 1);
+#endif
+
rcu_assign_pointer(net->gen, ng);
out:
return net;
+#ifdef CONFIG_KEYS
+out_free_2:
+ kmem_cache_free(net_cachep, net);
+ net = NULL;
+#endif
out_free:
kfree(ng);
goto out;
@@ -567,6 +586,7 @@ static void cleanup_net(struct work_struct *work)
list_for_each_entry_safe(net, tmp, &net_exit_list, exit_list) {
list_del_init(&net->exit_list);
dec_net_namespaces(net->ucounts);
+ key_remove_domain(net->key_domain);
put_user_ns(net->user_ns);
net_drop_ns(net);
}