@@ -22,6 +22,7 @@
#endif
#include <net/netns/xfrm.h>
+struct user_namespace;
struct proc_dir_entry;
struct net_device;
struct sock;
@@ -52,6 +53,8 @@ struct net {
struct list_head cleanup_list; /* namespaces on death row */
struct list_head exit_list; /* Use only net_mutex */
+ struct user_namespace *user_ns; /* Owning user namespace */
+
struct proc_dir_entry *proc_net;
struct proc_dir_entry *proc_net_stat;
@@ -110,10 +113,12 @@ struct net {
extern struct net init_net;
#ifdef CONFIG_NET
-extern struct net *copy_net_ns(unsigned long flags, struct net *net_ns);
+extern struct net *copy_net_ns(unsigned long flags,
+ struct user_namespace *user_ns, struct net *old_net);
#else /* CONFIG_NET */
-static inline struct net *copy_net_ns(unsigned long flags, struct net *net_ns)
+static inline struct net *copy_net_ns(unsigned long flags,
+ struct user_namespace *user_ns, struct net *old_net)
{
/* There is nothing to copy so this is a noop */
return net_ns;
@@ -90,7 +90,7 @@ static struct nsproxy *create_new_namespaces(unsigned long flags,
goto out_pid;
}
- new_nsp->net_ns = copy_net_ns(flags, tsk->nsproxy->net_ns);
+ new_nsp->net_ns = copy_net_ns(flags, task_cred_xxx(tsk, user_ns), tsk->nsproxy->net_ns);
if (IS_ERR(new_nsp->net_ns)) {
err = PTR_ERR(new_nsp->net_ns);
goto out_net;
@@ -11,6 +11,7 @@
#include <linux/proc_fs.h>
#include <linux/file.h>
#include <linux/export.h>
+#include <linux/user_namespace.h>
#include <net/net_namespace.h>
#include <net/netns/generic.h>
@@ -143,7 +144,7 @@ static void ops_free_list(const struct pernet_operations *ops,
/*
* setup_net runs the initializers for the network namespace object.
*/
-static __net_init int setup_net(struct net *net)
+static __net_init int setup_net(struct net *net, struct user_namespace *user_ns)
{
/* Must be called with net_mutex held */
const struct pernet_operations *ops, *saved_ops;
@@ -153,6 +154,7 @@ static __net_init int setup_net(struct net *net)
atomic_set(&net->count, 1);
atomic_set(&net->passive, 1);
net->dev_base_seq = 1;
+ net->user_ns = user_ns;
#ifdef NETNS_REFCNT_DEBUG
atomic_set(&net->use_count, 0);
@@ -230,7 +232,8 @@ void net_drop_ns(void *p)
net_free(ns);
}
-struct net *copy_net_ns(unsigned long flags, struct net *old_net)
+struct net *copy_net_ns(unsigned long flags,
+ struct user_namespace *user_ns, struct net *old_net)
{
struct net *net;
int rv;
@@ -241,8 +244,11 @@ struct net *copy_net_ns(unsigned long flags, struct net *old_net)
net = net_alloc();
if (!net)
return ERR_PTR(-ENOMEM);
+
+ get_user_ns(user_ns);
+
mutex_lock(&net_mutex);
- rv = setup_net(net);
+ rv = setup_net(net, user_ns);
if (rv == 0) {
rtnl_lock();
list_add_tail_rcu(&net->list, &net_namespace_list);
@@ -250,6 +256,7 @@ struct net *copy_net_ns(unsigned long flags, struct net *old_net)
}
mutex_unlock(&net_mutex);
if (rv < 0) {
+ put_user_ns(user_ns);
net_drop_ns(net);
return ERR_PTR(rv);
}
@@ -400,7 +407,7 @@ static int __init net_ns_init(void)
rcu_assign_pointer(init_net.gen, ng);
mutex_lock(&net_mutex);
- if (setup_net(&init_net))
+ if (setup_net(&init_net, &init_user_ns))
panic("Could not setup the initial network namespace");
rtnl_lock();