Commit | Line | Data |
---|---|---|
e005d193 JP |
1 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
2 | ||
5f256bec EB |
3 | #include <linux/workqueue.h> |
4 | #include <linux/rtnetlink.h> | |
5 | #include <linux/cache.h> | |
6 | #include <linux/slab.h> | |
7 | #include <linux/list.h> | |
8 | #include <linux/delay.h> | |
9dd776b6 | 9 | #include <linux/sched.h> |
c93cf61f | 10 | #include <linux/idr.h> |
11a28d37 | 11 | #include <linux/rculist.h> |
30ffee84 | 12 | #include <linux/nsproxy.h> |
0bb80f24 DH |
13 | #include <linux/fs.h> |
14 | #include <linux/proc_ns.h> | |
f0630529 | 15 | #include <linux/file.h> |
bc3b2d7f | 16 | #include <linux/export.h> |
038e7332 | 17 | #include <linux/user_namespace.h> |
0c7aecd4 | 18 | #include <linux/net_namespace.h> |
0c7aecd4 ND |
19 | #include <net/sock.h> |
20 | #include <net/netlink.h> | |
5f256bec | 21 | #include <net/net_namespace.h> |
dec827d1 | 22 | #include <net/netns/generic.h> |
5f256bec EB |
23 | |
24 | /* | |
25 | * Our network namespace constructor/destructor lists | |
26 | */ | |
27 | ||
28 | static LIST_HEAD(pernet_list); | |
29 | static struct list_head *first_device = &pernet_list; | |
200b916f | 30 | DEFINE_MUTEX(net_mutex); |
5f256bec | 31 | |
5f256bec | 32 | LIST_HEAD(net_namespace_list); |
b76a461f | 33 | EXPORT_SYMBOL_GPL(net_namespace_list); |
5f256bec | 34 | |
734b6541 RM |
35 | struct net init_net = { |
36 | .dev_base_head = LIST_HEAD_INIT(init_net.dev_base_head), | |
37 | }; | |
ff4b9502 | 38 | EXPORT_SYMBOL(init_net); |
5f256bec | 39 | |
f8c46cb3 DT |
40 | static bool init_net_initialized; |
41 | ||
6af2d5ff AD |
42 | #define MIN_PERNET_OPS_ID \ |
43 | ((sizeof(struct net_generic) + sizeof(void *) - 1) / sizeof(void *)) | |
44 | ||
dec827d1 PE |
45 | #define INITIAL_NET_GEN_PTRS 13 /* +1 for len +2 for rcu_head */ |
46 | ||
073862ba ED |
47 | static unsigned int max_gen_ptrs = INITIAL_NET_GEN_PTRS; |
48 | ||
49 | static struct net_generic *net_alloc_generic(void) | |
50 | { | |
51 | struct net_generic *ng; | |
6af2d5ff | 52 | unsigned int generic_size = offsetof(struct net_generic, ptr[max_gen_ptrs]); |
073862ba ED |
53 | |
54 | ng = kzalloc(generic_size, GFP_KERNEL); | |
55 | if (ng) | |
9bfc7b99 | 56 | ng->s.len = max_gen_ptrs; |
073862ba ED |
57 | |
58 | return ng; | |
59 | } | |
60 | ||
c7d03a00 | 61 | static int net_assign_generic(struct net *net, unsigned int id, void *data) |
05fceb4a JP |
62 | { |
63 | struct net_generic *ng, *old_ng; | |
64 | ||
65 | BUG_ON(!mutex_is_locked(&net_mutex)); | |
6af2d5ff | 66 | BUG_ON(id < MIN_PERNET_OPS_ID); |
05fceb4a | 67 | |
1c87733d ED |
68 | old_ng = rcu_dereference_protected(net->gen, |
69 | lockdep_is_held(&net_mutex)); | |
6af2d5ff AD |
70 | if (old_ng->s.len > id) { |
71 | old_ng->ptr[id] = data; | |
1a9a0592 AD |
72 | return 0; |
73 | } | |
05fceb4a | 74 | |
073862ba | 75 | ng = net_alloc_generic(); |
05fceb4a JP |
76 | if (ng == NULL) |
77 | return -ENOMEM; | |
78 | ||
79 | /* | |
80 | * Some synchronisation notes: | |
81 | * | |
82 | * The net_generic explores the net->gen array inside rcu | |
83 | * read section. Besides once set the net->gen->ptr[x] | |
84 | * pointer never changes (see rules in netns/generic.h). | |
85 | * | |
86 | * That said, we simply duplicate this array and schedule | |
87 | * the old copy for kfree after a grace period. | |
88 | */ | |
89 | ||
6af2d5ff AD |
90 | memcpy(&ng->ptr[MIN_PERNET_OPS_ID], &old_ng->ptr[MIN_PERNET_OPS_ID], |
91 | (old_ng->s.len - MIN_PERNET_OPS_ID) * sizeof(void *)); | |
92 | ng->ptr[id] = data; | |
05fceb4a JP |
93 | |
94 | rcu_assign_pointer(net->gen, ng); | |
9bfc7b99 | 95 | kfree_rcu(old_ng, s.rcu); |
05fceb4a JP |
96 | return 0; |
97 | } | |
98 | ||
f875bae0 EB |
99 | static int ops_init(const struct pernet_operations *ops, struct net *net) |
100 | { | |
b922934d JA |
101 | int err = -ENOMEM; |
102 | void *data = NULL; | |
103 | ||
f875bae0 | 104 | if (ops->id && ops->size) { |
b922934d | 105 | data = kzalloc(ops->size, GFP_KERNEL); |
f875bae0 | 106 | if (!data) |
b922934d | 107 | goto out; |
f875bae0 EB |
108 | |
109 | err = net_assign_generic(net, *ops->id, data); | |
b922934d JA |
110 | if (err) |
111 | goto cleanup; | |
f875bae0 | 112 | } |
b922934d | 113 | err = 0; |
f875bae0 | 114 | if (ops->init) |
b922934d JA |
115 | err = ops->init(net); |
116 | if (!err) | |
117 | return 0; | |
118 | ||
119 | cleanup: | |
120 | kfree(data); | |
121 | ||
122 | out: | |
123 | return err; | |
f875bae0 EB |
124 | } |
125 | ||
126 | static void ops_free(const struct pernet_operations *ops, struct net *net) | |
127 | { | |
128 | if (ops->id && ops->size) { | |
c7d03a00 | 129 | kfree(net_generic(net, *ops->id)); |
f875bae0 EB |
130 | } |
131 | } | |
132 | ||
72ad937a EB |
133 | static void ops_exit_list(const struct pernet_operations *ops, |
134 | struct list_head *net_exit_list) | |
135 | { | |
136 | struct net *net; | |
137 | if (ops->exit) { | |
138 | list_for_each_entry(net, net_exit_list, exit_list) | |
139 | ops->exit(net); | |
140 | } | |
72ad937a EB |
141 | if (ops->exit_batch) |
142 | ops->exit_batch(net_exit_list); | |
143 | } | |
144 | ||
145 | static void ops_free_list(const struct pernet_operations *ops, | |
146 | struct list_head *net_exit_list) | |
147 | { | |
148 | struct net *net; | |
149 | if (ops->size && ops->id) { | |
150 | list_for_each_entry(net, net_exit_list, exit_list) | |
151 | ops_free(ops, net); | |
152 | } | |
153 | } | |
154 | ||
95f38411 | 155 | /* should be called with nsid_lock held */ |
0c7aecd4 ND |
156 | static int alloc_netid(struct net *net, struct net *peer, int reqid) |
157 | { | |
3138dbf8 | 158 | int min = 0, max = 0; |
0c7aecd4 | 159 | |
0c7aecd4 ND |
160 | if (reqid >= 0) { |
161 | min = reqid; | |
162 | max = reqid + 1; | |
163 | } | |
164 | ||
95f38411 | 165 | return idr_alloc(&net->netns_ids, peer, min, max, GFP_ATOMIC); |
0c7aecd4 ND |
166 | } |
167 | ||
168 | /* This function is used by idr_for_each(). If net is equal to peer, the | |
169 | * function returns the id so that idr_for_each() stops. Because we cannot | |
170 | * returns the id 0 (idr_for_each() will not stop), we return the magic value | |
171 | * NET_ID_ZERO (-1) for it. | |
172 | */ | |
173 | #define NET_ID_ZERO -1 | |
174 | static int net_eq_idr(int id, void *net, void *peer) | |
175 | { | |
176 | if (net_eq(net, peer)) | |
177 | return id ? : NET_ID_ZERO; | |
178 | return 0; | |
179 | } | |
180 | ||
95f38411 ND |
181 | /* Should be called with nsid_lock held. If a new id is assigned, the bool alloc |
182 | * is set to true, thus the caller knows that the new id must be notified via | |
183 | * rtnl. | |
184 | */ | |
3138dbf8 | 185 | static int __peernet2id_alloc(struct net *net, struct net *peer, bool *alloc) |
0c7aecd4 ND |
186 | { |
187 | int id = idr_for_each(&net->netns_ids, net_eq_idr, peer); | |
3138dbf8 | 188 | bool alloc_it = *alloc; |
0c7aecd4 | 189 | |
3138dbf8 ND |
190 | *alloc = false; |
191 | ||
0c7aecd4 ND |
192 | /* Magic value for id 0. */ |
193 | if (id == NET_ID_ZERO) | |
194 | return 0; | |
195 | if (id > 0) | |
196 | return id; | |
197 | ||
3138dbf8 | 198 | if (alloc_it) { |
109582af | 199 | id = alloc_netid(net, peer, -1); |
3138dbf8 | 200 | *alloc = true; |
109582af ND |
201 | return id >= 0 ? id : NETNSA_NSID_NOT_ASSIGNED; |
202 | } | |
0c7aecd4 | 203 | |
109582af | 204 | return NETNSA_NSID_NOT_ASSIGNED; |
0c7aecd4 ND |
205 | } |
206 | ||
95f38411 | 207 | /* should be called with nsid_lock held */ |
3138dbf8 ND |
208 | static int __peernet2id(struct net *net, struct net *peer) |
209 | { | |
210 | bool no = false; | |
211 | ||
212 | return __peernet2id_alloc(net, peer, &no); | |
213 | } | |
214 | ||
215 | static void rtnl_net_notifyid(struct net *net, int cmd, int id); | |
0c7aecd4 ND |
216 | /* This function returns the id of a peer netns. If no id is assigned, one will |
217 | * be allocated and returned. | |
218 | */ | |
7a0877d4 | 219 | int peernet2id_alloc(struct net *net, struct net *peer) |
0c7aecd4 | 220 | { |
2a73306b | 221 | unsigned long flags; |
95f38411 | 222 | bool alloc; |
3138dbf8 | 223 | int id; |
0c7aecd4 | 224 | |
cfc44a4d WC |
225 | if (atomic_read(&net->count) == 0) |
226 | return NETNSA_NSID_NOT_ASSIGNED; | |
2a73306b | 227 | spin_lock_irqsave(&net->nsid_lock, flags); |
95f38411 | 228 | alloc = atomic_read(&peer->count) == 0 ? false : true; |
3138dbf8 | 229 | id = __peernet2id_alloc(net, peer, &alloc); |
2a73306b | 230 | spin_unlock_irqrestore(&net->nsid_lock, flags); |
3138dbf8 ND |
231 | if (alloc && id >= 0) |
232 | rtnl_net_notifyid(net, RTM_NEWNSID, id); | |
233 | return id; | |
0c7aecd4 ND |
234 | } |
235 | ||
95f38411 | 236 | /* This function returns, if assigned, the id of a peer netns. */ |
59324cf3 | 237 | int peernet2id(struct net *net, struct net *peer) |
95f38411 | 238 | { |
2a73306b | 239 | unsigned long flags; |
95f38411 ND |
240 | int id; |
241 | ||
2a73306b | 242 | spin_lock_irqsave(&net->nsid_lock, flags); |
95f38411 | 243 | id = __peernet2id(net, peer); |
2a73306b | 244 | spin_unlock_irqrestore(&net->nsid_lock, flags); |
95f38411 ND |
245 | return id; |
246 | } | |
38f507f1 | 247 | EXPORT_SYMBOL(peernet2id); |
95f38411 | 248 | |
59324cf3 ND |
249 | /* This function returns true is the peer netns has an id assigned into the |
250 | * current netns. | |
251 | */ | |
252 | bool peernet_has_id(struct net *net, struct net *peer) | |
253 | { | |
254 | return peernet2id(net, peer) >= 0; | |
255 | } | |
256 | ||
0c7aecd4 ND |
257 | struct net *get_net_ns_by_id(struct net *net, int id) |
258 | { | |
2a73306b | 259 | unsigned long flags; |
0c7aecd4 ND |
260 | struct net *peer; |
261 | ||
262 | if (id < 0) | |
263 | return NULL; | |
264 | ||
265 | rcu_read_lock(); | |
2a73306b | 266 | spin_lock_irqsave(&net->nsid_lock, flags); |
0c7aecd4 ND |
267 | peer = idr_find(&net->netns_ids, id); |
268 | if (peer) | |
269 | get_net(peer); | |
2a73306b | 270 | spin_unlock_irqrestore(&net->nsid_lock, flags); |
0c7aecd4 ND |
271 | rcu_read_unlock(); |
272 | ||
273 | return peer; | |
274 | } | |
275 | ||
5f256bec EB |
276 | /* |
277 | * setup_net runs the initializers for the network namespace object. | |
278 | */ | |
038e7332 | 279 | static __net_init int setup_net(struct net *net, struct user_namespace *user_ns) |
5f256bec EB |
280 | { |
281 | /* Must be called with net_mutex held */ | |
f875bae0 | 282 | const struct pernet_operations *ops, *saved_ops; |
486a87f1 | 283 | int error = 0; |
72ad937a | 284 | LIST_HEAD(net_exit_list); |
5f256bec | 285 | |
5f256bec | 286 | atomic_set(&net->count, 1); |
a685e089 | 287 | atomic_set(&net->passive, 1); |
4e985ada | 288 | net->dev_base_seq = 1; |
038e7332 | 289 | net->user_ns = user_ns; |
0c7aecd4 | 290 | idr_init(&net->netns_ids); |
de133464 | 291 | spin_lock_init(&net->nsid_lock); |
486a87f1 | 292 | |
768f3591 | 293 | list_for_each_entry(ops, &pernet_list, list) { |
f875bae0 EB |
294 | error = ops_init(ops, net); |
295 | if (error < 0) | |
296 | goto out_undo; | |
5f256bec EB |
297 | } |
298 | out: | |
299 | return error; | |
768f3591 | 300 | |
5f256bec EB |
301 | out_undo: |
302 | /* Walk through the list backwards calling the exit functions | |
303 | * for the pernet modules whose init functions did not fail. | |
304 | */ | |
72ad937a | 305 | list_add(&net->exit_list, &net_exit_list); |
f875bae0 | 306 | saved_ops = ops; |
72ad937a EB |
307 | list_for_each_entry_continue_reverse(ops, &pernet_list, list) |
308 | ops_exit_list(ops, &net_exit_list); | |
309 | ||
f875bae0 EB |
310 | ops = saved_ops; |
311 | list_for_each_entry_continue_reverse(ops, &pernet_list, list) | |
72ad937a | 312 | ops_free_list(ops, &net_exit_list); |
310928d9 DL |
313 | |
314 | rcu_barrier(); | |
5f256bec EB |
315 | goto out; |
316 | } | |
317 | ||
6a1a3b9f | 318 | |
ebe47d47 | 319 | #ifdef CONFIG_NET_NS |
2ed6afde AB |
320 | static struct ucounts *inc_net_namespaces(struct user_namespace *ns) |
321 | { | |
322 | return inc_ucount(ns, current_euid(), UCOUNT_NET_NAMESPACES); | |
323 | } | |
324 | ||
325 | static void dec_net_namespaces(struct ucounts *ucounts) | |
326 | { | |
327 | dec_ucount(ucounts, UCOUNT_NET_NAMESPACES); | |
328 | } | |
329 | ||
ebe47d47 CN |
330 | static struct kmem_cache *net_cachep; |
331 | static struct workqueue_struct *netns_wq; | |
332 | ||
486a87f1 | 333 | static struct net *net_alloc(void) |
45a19b0a | 334 | { |
486a87f1 DL |
335 | struct net *net = NULL; |
336 | struct net_generic *ng; | |
337 | ||
338 | ng = net_alloc_generic(); | |
339 | if (!ng) | |
340 | goto out; | |
341 | ||
342 | net = kmem_cache_zalloc(net_cachep, GFP_KERNEL); | |
45a19b0a | 343 | if (!net) |
486a87f1 | 344 | goto out_free; |
45a19b0a | 345 | |
486a87f1 DL |
346 | rcu_assign_pointer(net->gen, ng); |
347 | out: | |
348 | return net; | |
349 | ||
350 | out_free: | |
351 | kfree(ng); | |
352 | goto out; | |
353 | } | |
354 | ||
355 | static void net_free(struct net *net) | |
356 | { | |
416c51e1 | 357 | kfree(rcu_access_pointer(net->gen)); |
45a19b0a JFS |
358 | kmem_cache_free(net_cachep, net); |
359 | } | |
360 | ||
a685e089 AV |
361 | void net_drop_ns(void *p) |
362 | { | |
363 | struct net *ns = p; | |
364 | if (ns && atomic_dec_and_test(&ns->passive)) | |
365 | net_free(ns); | |
366 | } | |
367 | ||
038e7332 EB |
368 | struct net *copy_net_ns(unsigned long flags, |
369 | struct user_namespace *user_ns, struct net *old_net) | |
9dd776b6 | 370 | { |
70328660 | 371 | struct ucounts *ucounts; |
088eb2d9 AD |
372 | struct net *net; |
373 | int rv; | |
9dd776b6 | 374 | |
911cb193 RL |
375 | if (!(flags & CLONE_NEWNET)) |
376 | return get_net(old_net); | |
377 | ||
70328660 EB |
378 | ucounts = inc_net_namespaces(user_ns); |
379 | if (!ucounts) | |
df75e774 | 380 | return ERR_PTR(-ENOSPC); |
70328660 | 381 | |
088eb2d9 | 382 | net = net_alloc(); |
70328660 EB |
383 | if (!net) { |
384 | dec_net_namespaces(ucounts); | |
088eb2d9 | 385 | return ERR_PTR(-ENOMEM); |
70328660 | 386 | } |
038e7332 EB |
387 | |
388 | get_user_ns(user_ns); | |
389 | ||
7281a665 AV |
390 | rv = mutex_lock_killable(&net_mutex); |
391 | if (rv < 0) { | |
392 | net_free(net); | |
393 | dec_net_namespaces(ucounts); | |
394 | put_user_ns(user_ns); | |
395 | return ERR_PTR(rv); | |
396 | } | |
397 | ||
70328660 | 398 | net->ucounts = ucounts; |
038e7332 | 399 | rv = setup_net(net, user_ns); |
088eb2d9 | 400 | if (rv == 0) { |
486a87f1 | 401 | rtnl_lock(); |
11a28d37 | 402 | list_add_tail_rcu(&net->list, &net_namespace_list); |
486a87f1 DL |
403 | rtnl_unlock(); |
404 | } | |
9dd776b6 | 405 | mutex_unlock(&net_mutex); |
088eb2d9 | 406 | if (rv < 0) { |
70328660 | 407 | dec_net_namespaces(ucounts); |
038e7332 | 408 | put_user_ns(user_ns); |
a685e089 | 409 | net_drop_ns(net); |
088eb2d9 AD |
410 | return ERR_PTR(rv); |
411 | } | |
412 | return net; | |
413 | } | |
486a87f1 | 414 | |
2b035b39 EB |
415 | static DEFINE_SPINLOCK(cleanup_list_lock); |
416 | static LIST_HEAD(cleanup_list); /* Must hold cleanup_list_lock to touch */ | |
417 | ||
6a1a3b9f PE |
418 | static void cleanup_net(struct work_struct *work) |
419 | { | |
f875bae0 | 420 | const struct pernet_operations *ops; |
6d458f5b | 421 | struct net *net, *tmp; |
1818ce4d | 422 | struct list_head net_kill_list; |
72ad937a | 423 | LIST_HEAD(net_exit_list); |
6a1a3b9f | 424 | |
2b035b39 EB |
425 | /* Atomically snapshot the list of namespaces to cleanup */ |
426 | spin_lock_irq(&cleanup_list_lock); | |
427 | list_replace_init(&cleanup_list, &net_kill_list); | |
428 | spin_unlock_irq(&cleanup_list_lock); | |
6a1a3b9f PE |
429 | |
430 | mutex_lock(&net_mutex); | |
431 | ||
432 | /* Don't let anyone else find us. */ | |
433 | rtnl_lock(); | |
72ad937a | 434 | list_for_each_entry(net, &net_kill_list, cleanup_list) { |
2b035b39 | 435 | list_del_rcu(&net->list); |
72ad937a | 436 | list_add_tail(&net->exit_list, &net_exit_list); |
6d458f5b | 437 | for_each_net(tmp) { |
95f38411 | 438 | int id; |
6d458f5b | 439 | |
2a73306b | 440 | spin_lock_irq(&tmp->nsid_lock); |
95f38411 ND |
441 | id = __peernet2id(tmp, net); |
442 | if (id >= 0) | |
6d458f5b | 443 | idr_remove(&tmp->netns_ids, id); |
2a73306b | 444 | spin_unlock_irq(&tmp->nsid_lock); |
95f38411 ND |
445 | if (id >= 0) |
446 | rtnl_net_notifyid(tmp, RTM_DELNSID, id); | |
6d458f5b | 447 | } |
2a73306b | 448 | spin_lock_irq(&net->nsid_lock); |
6d458f5b | 449 | idr_destroy(&net->netns_ids); |
2a73306b | 450 | spin_unlock_irq(&net->nsid_lock); |
6d458f5b | 451 | |
72ad937a | 452 | } |
6a1a3b9f PE |
453 | rtnl_unlock(); |
454 | ||
11a28d37 JB |
455 | /* |
456 | * Another CPU might be rcu-iterating the list, wait for it. | |
457 | * This needs to be before calling the exit() notifiers, so | |
458 | * the rcu_barrier() below isn't sufficient alone. | |
459 | */ | |
460 | synchronize_rcu(); | |
461 | ||
6a1a3b9f | 462 | /* Run all of the network namespace exit methods */ |
72ad937a EB |
463 | list_for_each_entry_reverse(ops, &pernet_list, list) |
464 | ops_exit_list(ops, &net_exit_list); | |
465 | ||
f875bae0 | 466 | /* Free the net generic variables */ |
72ad937a EB |
467 | list_for_each_entry_reverse(ops, &pernet_list, list) |
468 | ops_free_list(ops, &net_exit_list); | |
6a1a3b9f PE |
469 | |
470 | mutex_unlock(&net_mutex); | |
471 | ||
472 | /* Ensure there are no outstanding rcu callbacks using this | |
473 | * network namespace. | |
474 | */ | |
475 | rcu_barrier(); | |
476 | ||
477 | /* Finally it is safe to free my network namespace structure */ | |
72ad937a EB |
478 | list_for_each_entry_safe(net, tmp, &net_exit_list, exit_list) { |
479 | list_del_init(&net->exit_list); | |
70328660 | 480 | dec_net_namespaces(net->ucounts); |
038e7332 | 481 | put_user_ns(net->user_ns); |
a685e089 | 482 | net_drop_ns(net); |
2b035b39 | 483 | } |
6a1a3b9f | 484 | } |
2b035b39 | 485 | static DECLARE_WORK(net_cleanup_work, cleanup_net); |
6a1a3b9f PE |
486 | |
487 | void __put_net(struct net *net) | |
488 | { | |
489 | /* Cleanup the network namespace in process context */ | |
2b035b39 EB |
490 | unsigned long flags; |
491 | ||
492 | spin_lock_irqsave(&cleanup_list_lock, flags); | |
493 | list_add(&net->cleanup_list, &cleanup_list); | |
494 | spin_unlock_irqrestore(&cleanup_list_lock, flags); | |
495 | ||
496 | queue_work(netns_wq, &net_cleanup_work); | |
6a1a3b9f PE |
497 | } |
498 | EXPORT_SYMBOL_GPL(__put_net); | |
499 | ||
956c9207 SR |
500 | struct net *get_net_ns_by_fd(int fd) |
501 | { | |
956c9207 | 502 | struct file *file; |
33c42940 | 503 | struct ns_common *ns; |
956c9207 SR |
504 | struct net *net; |
505 | ||
956c9207 | 506 | file = proc_ns_fget(fd); |
c316e6a3 AV |
507 | if (IS_ERR(file)) |
508 | return ERR_CAST(file); | |
956c9207 | 509 | |
f77c8014 | 510 | ns = get_proc_ns(file_inode(file)); |
33c42940 AV |
511 | if (ns->ops == &netns_operations) |
512 | net = get_net(container_of(ns, struct net, ns)); | |
c316e6a3 AV |
513 | else |
514 | net = ERR_PTR(-EINVAL); | |
956c9207 | 515 | |
c316e6a3 | 516 | fput(file); |
956c9207 SR |
517 | return net; |
518 | } | |
519 | ||
6a1a3b9f | 520 | #else |
956c9207 SR |
521 | struct net *get_net_ns_by_fd(int fd) |
522 | { | |
523 | return ERR_PTR(-EINVAL); | |
524 | } | |
6a1a3b9f | 525 | #endif |
4b681c82 | 526 | EXPORT_SYMBOL_GPL(get_net_ns_by_fd); |
6a1a3b9f | 527 | |
30ffee84 JB |
528 | struct net *get_net_ns_by_pid(pid_t pid) |
529 | { | |
530 | struct task_struct *tsk; | |
531 | struct net *net; | |
532 | ||
533 | /* Lookup the network namespace */ | |
534 | net = ERR_PTR(-ESRCH); | |
535 | rcu_read_lock(); | |
536 | tsk = find_task_by_vpid(pid); | |
537 | if (tsk) { | |
538 | struct nsproxy *nsproxy; | |
728dba3a EB |
539 | task_lock(tsk); |
540 | nsproxy = tsk->nsproxy; | |
30ffee84 JB |
541 | if (nsproxy) |
542 | net = get_net(nsproxy->net_ns); | |
728dba3a | 543 | task_unlock(tsk); |
30ffee84 JB |
544 | } |
545 | rcu_read_unlock(); | |
546 | return net; | |
547 | } | |
548 | EXPORT_SYMBOL_GPL(get_net_ns_by_pid); | |
549 | ||
98f842e6 EB |
550 | static __net_init int net_ns_net_init(struct net *net) |
551 | { | |
33c42940 AV |
552 | #ifdef CONFIG_NET_NS |
553 | net->ns.ops = &netns_operations; | |
554 | #endif | |
6344c433 | 555 | return ns_alloc_inum(&net->ns); |
98f842e6 EB |
556 | } |
557 | ||
558 | static __net_exit void net_ns_net_exit(struct net *net) | |
559 | { | |
6344c433 | 560 | ns_free_inum(&net->ns); |
98f842e6 EB |
561 | } |
562 | ||
563 | static struct pernet_operations __net_initdata net_ns_ops = { | |
564 | .init = net_ns_net_init, | |
565 | .exit = net_ns_net_exit, | |
566 | }; | |
567 | ||
3ee5256d | 568 | static const struct nla_policy rtnl_net_policy[NETNSA_MAX + 1] = { |
0c7aecd4 ND |
569 | [NETNSA_NONE] = { .type = NLA_UNSPEC }, |
570 | [NETNSA_NSID] = { .type = NLA_S32 }, | |
571 | [NETNSA_PID] = { .type = NLA_U32 }, | |
572 | [NETNSA_FD] = { .type = NLA_U32 }, | |
573 | }; | |
574 | ||
575 | static int rtnl_net_newid(struct sk_buff *skb, struct nlmsghdr *nlh) | |
576 | { | |
577 | struct net *net = sock_net(skb->sk); | |
578 | struct nlattr *tb[NETNSA_MAX + 1]; | |
2a73306b | 579 | unsigned long flags; |
0c7aecd4 ND |
580 | struct net *peer; |
581 | int nsid, err; | |
582 | ||
583 | err = nlmsg_parse(nlh, sizeof(struct rtgenmsg), tb, NETNSA_MAX, | |
584 | rtnl_net_policy); | |
585 | if (err < 0) | |
586 | return err; | |
587 | if (!tb[NETNSA_NSID]) | |
588 | return -EINVAL; | |
589 | nsid = nla_get_s32(tb[NETNSA_NSID]); | |
590 | ||
591 | if (tb[NETNSA_PID]) | |
592 | peer = get_net_ns_by_pid(nla_get_u32(tb[NETNSA_PID])); | |
593 | else if (tb[NETNSA_FD]) | |
594 | peer = get_net_ns_by_fd(nla_get_u32(tb[NETNSA_FD])); | |
595 | else | |
596 | return -EINVAL; | |
597 | if (IS_ERR(peer)) | |
598 | return PTR_ERR(peer); | |
599 | ||
2a73306b | 600 | spin_lock_irqsave(&net->nsid_lock, flags); |
3138dbf8 | 601 | if (__peernet2id(net, peer) >= 0) { |
2a73306b | 602 | spin_unlock_irqrestore(&net->nsid_lock, flags); |
0c7aecd4 ND |
603 | err = -EEXIST; |
604 | goto out; | |
605 | } | |
606 | ||
607 | err = alloc_netid(net, peer, nsid); | |
2a73306b | 608 | spin_unlock_irqrestore(&net->nsid_lock, flags); |
3138dbf8 ND |
609 | if (err >= 0) { |
610 | rtnl_net_notifyid(net, RTM_NEWNSID, err); | |
0c7aecd4 | 611 | err = 0; |
3138dbf8 | 612 | } |
0c7aecd4 ND |
613 | out: |
614 | put_net(peer); | |
615 | return err; | |
616 | } | |
617 | ||
618 | static int rtnl_net_get_size(void) | |
619 | { | |
620 | return NLMSG_ALIGN(sizeof(struct rtgenmsg)) | |
621 | + nla_total_size(sizeof(s32)) /* NETNSA_NSID */ | |
622 | ; | |
623 | } | |
624 | ||
625 | static int rtnl_net_fill(struct sk_buff *skb, u32 portid, u32 seq, int flags, | |
cab3c8ec | 626 | int cmd, struct net *net, int nsid) |
0c7aecd4 ND |
627 | { |
628 | struct nlmsghdr *nlh; | |
629 | struct rtgenmsg *rth; | |
0c7aecd4 ND |
630 | |
631 | nlh = nlmsg_put(skb, portid, seq, cmd, sizeof(*rth), flags); | |
632 | if (!nlh) | |
633 | return -EMSGSIZE; | |
634 | ||
635 | rth = nlmsg_data(nlh); | |
636 | rth->rtgen_family = AF_UNSPEC; | |
637 | ||
cab3c8ec | 638 | if (nla_put_s32(skb, NETNSA_NSID, nsid)) |
0c7aecd4 ND |
639 | goto nla_put_failure; |
640 | ||
641 | nlmsg_end(skb, nlh); | |
642 | return 0; | |
643 | ||
644 | nla_put_failure: | |
645 | nlmsg_cancel(skb, nlh); | |
646 | return -EMSGSIZE; | |
647 | } | |
648 | ||
649 | static int rtnl_net_getid(struct sk_buff *skb, struct nlmsghdr *nlh) | |
650 | { | |
651 | struct net *net = sock_net(skb->sk); | |
652 | struct nlattr *tb[NETNSA_MAX + 1]; | |
653 | struct sk_buff *msg; | |
0c7aecd4 | 654 | struct net *peer; |
cab3c8ec | 655 | int err, id; |
0c7aecd4 ND |
656 | |
657 | err = nlmsg_parse(nlh, sizeof(struct rtgenmsg), tb, NETNSA_MAX, | |
658 | rtnl_net_policy); | |
659 | if (err < 0) | |
660 | return err; | |
661 | if (tb[NETNSA_PID]) | |
662 | peer = get_net_ns_by_pid(nla_get_u32(tb[NETNSA_PID])); | |
663 | else if (tb[NETNSA_FD]) | |
664 | peer = get_net_ns_by_fd(nla_get_u32(tb[NETNSA_FD])); | |
665 | else | |
666 | return -EINVAL; | |
667 | ||
668 | if (IS_ERR(peer)) | |
669 | return PTR_ERR(peer); | |
670 | ||
671 | msg = nlmsg_new(rtnl_net_get_size(), GFP_KERNEL); | |
672 | if (!msg) { | |
673 | err = -ENOMEM; | |
674 | goto out; | |
675 | } | |
676 | ||
95f38411 | 677 | id = peernet2id(net, peer); |
0c7aecd4 | 678 | err = rtnl_net_fill(msg, NETLINK_CB(skb).portid, nlh->nlmsg_seq, 0, |
b04096ff | 679 | RTM_NEWNSID, net, id); |
0c7aecd4 ND |
680 | if (err < 0) |
681 | goto err_out; | |
682 | ||
683 | err = rtnl_unicast(msg, net, NETLINK_CB(skb).portid); | |
684 | goto out; | |
685 | ||
686 | err_out: | |
687 | nlmsg_free(msg); | |
688 | out: | |
689 | put_net(peer); | |
690 | return err; | |
691 | } | |
692 | ||
a143c40c ND |
693 | struct rtnl_net_dump_cb { |
694 | struct net *net; | |
695 | struct sk_buff *skb; | |
696 | struct netlink_callback *cb; | |
697 | int idx; | |
698 | int s_idx; | |
699 | }; | |
700 | ||
701 | static int rtnl_net_dumpid_one(int id, void *peer, void *data) | |
702 | { | |
703 | struct rtnl_net_dump_cb *net_cb = (struct rtnl_net_dump_cb *)data; | |
704 | int ret; | |
705 | ||
706 | if (net_cb->idx < net_cb->s_idx) | |
707 | goto cont; | |
708 | ||
709 | ret = rtnl_net_fill(net_cb->skb, NETLINK_CB(net_cb->cb->skb).portid, | |
710 | net_cb->cb->nlh->nlmsg_seq, NLM_F_MULTI, | |
cab3c8ec | 711 | RTM_NEWNSID, net_cb->net, id); |
a143c40c ND |
712 | if (ret < 0) |
713 | return ret; | |
714 | ||
715 | cont: | |
716 | net_cb->idx++; | |
717 | return 0; | |
718 | } | |
719 | ||
720 | static int rtnl_net_dumpid(struct sk_buff *skb, struct netlink_callback *cb) | |
721 | { | |
722 | struct net *net = sock_net(skb->sk); | |
723 | struct rtnl_net_dump_cb net_cb = { | |
724 | .net = net, | |
725 | .skb = skb, | |
726 | .cb = cb, | |
727 | .idx = 0, | |
728 | .s_idx = cb->args[0], | |
729 | }; | |
2a73306b | 730 | unsigned long flags; |
a143c40c | 731 | |
2a73306b | 732 | spin_lock_irqsave(&net->nsid_lock, flags); |
a143c40c | 733 | idr_for_each(&net->netns_ids, rtnl_net_dumpid_one, &net_cb); |
2a73306b | 734 | spin_unlock_irqrestore(&net->nsid_lock, flags); |
a143c40c ND |
735 | |
736 | cb->args[0] = net_cb.idx; | |
737 | return skb->len; | |
738 | } | |
739 | ||
cab3c8ec | 740 | static void rtnl_net_notifyid(struct net *net, int cmd, int id) |
9a963454 ND |
741 | { |
742 | struct sk_buff *msg; | |
743 | int err = -ENOMEM; | |
744 | ||
745 | msg = nlmsg_new(rtnl_net_get_size(), GFP_KERNEL); | |
746 | if (!msg) | |
747 | goto out; | |
748 | ||
cab3c8ec | 749 | err = rtnl_net_fill(msg, 0, 0, 0, cmd, net, id); |
9a963454 ND |
750 | if (err < 0) |
751 | goto err_out; | |
752 | ||
753 | rtnl_notify(msg, net, 0, RTNLGRP_NSID, NULL, 0); | |
754 | return; | |
755 | ||
756 | err_out: | |
757 | nlmsg_free(msg); | |
758 | out: | |
759 | rtnl_set_sk_err(net, RTNLGRP_NSID, err); | |
760 | } | |
761 | ||
5f256bec EB |
762 | static int __init net_ns_init(void) |
763 | { | |
486a87f1 | 764 | struct net_generic *ng; |
5f256bec | 765 | |
d57a9212 | 766 | #ifdef CONFIG_NET_NS |
5f256bec EB |
767 | net_cachep = kmem_cache_create("net_namespace", sizeof(struct net), |
768 | SMP_CACHE_BYTES, | |
769 | SLAB_PANIC, NULL); | |
3ef1355d BT |
770 | |
771 | /* Create workqueue for cleanup */ | |
772 | netns_wq = create_singlethread_workqueue("netns"); | |
773 | if (!netns_wq) | |
774 | panic("Could not create netns workq"); | |
d57a9212 | 775 | #endif |
3ef1355d | 776 | |
486a87f1 DL |
777 | ng = net_alloc_generic(); |
778 | if (!ng) | |
779 | panic("Could not allocate generic netns"); | |
780 | ||
781 | rcu_assign_pointer(init_net.gen, ng); | |
782 | ||
5f256bec | 783 | mutex_lock(&net_mutex); |
038e7332 | 784 | if (setup_net(&init_net, &init_user_ns)) |
ca0f3112 | 785 | panic("Could not setup the initial network namespace"); |
5f256bec | 786 | |
f8c46cb3 DT |
787 | init_net_initialized = true; |
788 | ||
f4618d39 | 789 | rtnl_lock(); |
11a28d37 | 790 | list_add_tail_rcu(&init_net.list, &net_namespace_list); |
f4618d39 | 791 | rtnl_unlock(); |
5f256bec EB |
792 | |
793 | mutex_unlock(&net_mutex); | |
5f256bec | 794 | |
98f842e6 EB |
795 | register_pernet_subsys(&net_ns_ops); |
796 | ||
0c7aecd4 | 797 | rtnl_register(PF_UNSPEC, RTM_NEWNSID, rtnl_net_newid, NULL, NULL); |
a143c40c ND |
798 | rtnl_register(PF_UNSPEC, RTM_GETNSID, rtnl_net_getid, rtnl_net_dumpid, |
799 | NULL); | |
0c7aecd4 | 800 | |
5f256bec EB |
801 | return 0; |
802 | } | |
803 | ||
804 | pure_initcall(net_ns_init); | |
805 | ||
ed160e83 | 806 | #ifdef CONFIG_NET_NS |
f875bae0 EB |
807 | static int __register_pernet_operations(struct list_head *list, |
808 | struct pernet_operations *ops) | |
5f256bec | 809 | { |
72ad937a | 810 | struct net *net; |
5f256bec | 811 | int error; |
72ad937a | 812 | LIST_HEAD(net_exit_list); |
5f256bec | 813 | |
5f256bec | 814 | list_add_tail(&ops->list, list); |
f875bae0 | 815 | if (ops->init || (ops->id && ops->size)) { |
1dba323b | 816 | for_each_net(net) { |
f875bae0 | 817 | error = ops_init(ops, net); |
5f256bec EB |
818 | if (error) |
819 | goto out_undo; | |
72ad937a | 820 | list_add_tail(&net->exit_list, &net_exit_list); |
5f256bec EB |
821 | } |
822 | } | |
1dba323b | 823 | return 0; |
5f256bec EB |
824 | |
825 | out_undo: | |
826 | /* If I have an error cleanup all namespaces I initialized */ | |
827 | list_del(&ops->list); | |
72ad937a EB |
828 | ops_exit_list(ops, &net_exit_list); |
829 | ops_free_list(ops, &net_exit_list); | |
1dba323b | 830 | return error; |
5f256bec EB |
831 | } |
832 | ||
f875bae0 | 833 | static void __unregister_pernet_operations(struct pernet_operations *ops) |
5f256bec EB |
834 | { |
835 | struct net *net; | |
72ad937a | 836 | LIST_HEAD(net_exit_list); |
5f256bec EB |
837 | |
838 | list_del(&ops->list); | |
72ad937a EB |
839 | for_each_net(net) |
840 | list_add_tail(&net->exit_list, &net_exit_list); | |
841 | ops_exit_list(ops, &net_exit_list); | |
842 | ops_free_list(ops, &net_exit_list); | |
5f256bec EB |
843 | } |
844 | ||
ed160e83 DL |
845 | #else |
846 | ||
f875bae0 EB |
847 | static int __register_pernet_operations(struct list_head *list, |
848 | struct pernet_operations *ops) | |
ed160e83 | 849 | { |
f8c46cb3 DT |
850 | if (!init_net_initialized) { |
851 | list_add_tail(&ops->list, list); | |
852 | return 0; | |
853 | } | |
854 | ||
b922934d | 855 | return ops_init(ops, &init_net); |
ed160e83 DL |
856 | } |
857 | ||
f875bae0 | 858 | static void __unregister_pernet_operations(struct pernet_operations *ops) |
ed160e83 | 859 | { |
f8c46cb3 DT |
860 | if (!init_net_initialized) { |
861 | list_del(&ops->list); | |
862 | } else { | |
863 | LIST_HEAD(net_exit_list); | |
864 | list_add(&init_net.exit_list, &net_exit_list); | |
865 | ops_exit_list(ops, &net_exit_list); | |
866 | ops_free_list(ops, &net_exit_list); | |
867 | } | |
ed160e83 | 868 | } |
f875bae0 EB |
869 | |
870 | #endif /* CONFIG_NET_NS */ | |
ed160e83 | 871 | |
c93cf61f PE |
872 | static DEFINE_IDA(net_generic_ids); |
873 | ||
f875bae0 EB |
874 | static int register_pernet_operations(struct list_head *list, |
875 | struct pernet_operations *ops) | |
876 | { | |
877 | int error; | |
878 | ||
879 | if (ops->id) { | |
880 | again: | |
6af2d5ff | 881 | error = ida_get_new_above(&net_generic_ids, MIN_PERNET_OPS_ID, ops->id); |
f875bae0 EB |
882 | if (error < 0) { |
883 | if (error == -EAGAIN) { | |
884 | ida_pre_get(&net_generic_ids, GFP_KERNEL); | |
885 | goto again; | |
886 | } | |
887 | return error; | |
888 | } | |
6af2d5ff | 889 | max_gen_ptrs = max(max_gen_ptrs, *ops->id + 1); |
f875bae0 EB |
890 | } |
891 | error = __register_pernet_operations(list, ops); | |
3a765eda EB |
892 | if (error) { |
893 | rcu_barrier(); | |
894 | if (ops->id) | |
895 | ida_remove(&net_generic_ids, *ops->id); | |
896 | } | |
f875bae0 EB |
897 | |
898 | return error; | |
899 | } | |
900 | ||
901 | static void unregister_pernet_operations(struct pernet_operations *ops) | |
902 | { | |
903 | ||
904 | __unregister_pernet_operations(ops); | |
3a765eda | 905 | rcu_barrier(); |
f875bae0 EB |
906 | if (ops->id) |
907 | ida_remove(&net_generic_ids, *ops->id); | |
908 | } | |
909 | ||
5f256bec EB |
910 | /** |
911 | * register_pernet_subsys - register a network namespace subsystem | |
912 | * @ops: pernet operations structure for the subsystem | |
913 | * | |
914 | * Register a subsystem which has init and exit functions | |
915 | * that are called when network namespaces are created and | |
916 | * destroyed respectively. | |
917 | * | |
918 | * When registered all network namespace init functions are | |
919 | * called for every existing network namespace. Allowing kernel | |
920 | * modules to have a race free view of the set of network namespaces. | |
921 | * | |
922 | * When a new network namespace is created all of the init | |
923 | * methods are called in the order in which they were registered. | |
924 | * | |
925 | * When a network namespace is destroyed all of the exit methods | |
926 | * are called in the reverse of the order with which they were | |
927 | * registered. | |
928 | */ | |
929 | int register_pernet_subsys(struct pernet_operations *ops) | |
930 | { | |
931 | int error; | |
932 | mutex_lock(&net_mutex); | |
933 | error = register_pernet_operations(first_device, ops); | |
934 | mutex_unlock(&net_mutex); | |
935 | return error; | |
936 | } | |
937 | EXPORT_SYMBOL_GPL(register_pernet_subsys); | |
938 | ||
939 | /** | |
940 | * unregister_pernet_subsys - unregister a network namespace subsystem | |
941 | * @ops: pernet operations structure to manipulate | |
942 | * | |
943 | * Remove the pernet operations structure from the list to be | |
53379e57 | 944 | * used when network namespaces are created or destroyed. In |
5f256bec EB |
945 | * addition run the exit method for all existing network |
946 | * namespaces. | |
947 | */ | |
b3c981d2 | 948 | void unregister_pernet_subsys(struct pernet_operations *ops) |
5f256bec EB |
949 | { |
950 | mutex_lock(&net_mutex); | |
b3c981d2 | 951 | unregister_pernet_operations(ops); |
5f256bec EB |
952 | mutex_unlock(&net_mutex); |
953 | } | |
954 | EXPORT_SYMBOL_GPL(unregister_pernet_subsys); | |
955 | ||
956 | /** | |
957 | * register_pernet_device - register a network namespace device | |
958 | * @ops: pernet operations structure for the subsystem | |
959 | * | |
960 | * Register a device which has init and exit functions | |
961 | * that are called when network namespaces are created and | |
962 | * destroyed respectively. | |
963 | * | |
964 | * When registered all network namespace init functions are | |
965 | * called for every existing network namespace. Allowing kernel | |
966 | * modules to have a race free view of the set of network namespaces. | |
967 | * | |
968 | * When a new network namespace is created all of the init | |
969 | * methods are called in the order in which they were registered. | |
970 | * | |
971 | * When a network namespace is destroyed all of the exit methods | |
972 | * are called in the reverse of the order with which they were | |
973 | * registered. | |
974 | */ | |
975 | int register_pernet_device(struct pernet_operations *ops) | |
976 | { | |
977 | int error; | |
978 | mutex_lock(&net_mutex); | |
979 | error = register_pernet_operations(&pernet_list, ops); | |
980 | if (!error && (first_device == &pernet_list)) | |
981 | first_device = &ops->list; | |
982 | mutex_unlock(&net_mutex); | |
983 | return error; | |
984 | } | |
985 | EXPORT_SYMBOL_GPL(register_pernet_device); | |
986 | ||
987 | /** | |
988 | * unregister_pernet_device - unregister a network namespace netdevice | |
989 | * @ops: pernet operations structure to manipulate | |
990 | * | |
991 | * Remove the pernet operations structure from the list to be | |
53379e57 | 992 | * used when network namespaces are created or destroyed. In |
5f256bec EB |
993 | * addition run the exit method for all existing network |
994 | * namespaces. | |
995 | */ | |
996 | void unregister_pernet_device(struct pernet_operations *ops) | |
997 | { | |
998 | mutex_lock(&net_mutex); | |
999 | if (&ops->list == first_device) | |
1000 | first_device = first_device->next; | |
1001 | unregister_pernet_operations(ops); | |
1002 | mutex_unlock(&net_mutex); | |
1003 | } | |
1004 | EXPORT_SYMBOL_GPL(unregister_pernet_device); | |
13b6f576 EB |
1005 | |
1006 | #ifdef CONFIG_NET_NS | |
64964528 | 1007 | static struct ns_common *netns_get(struct task_struct *task) |
13b6f576 | 1008 | { |
f0630529 EB |
1009 | struct net *net = NULL; |
1010 | struct nsproxy *nsproxy; | |
1011 | ||
728dba3a EB |
1012 | task_lock(task); |
1013 | nsproxy = task->nsproxy; | |
f0630529 EB |
1014 | if (nsproxy) |
1015 | net = get_net(nsproxy->net_ns); | |
728dba3a | 1016 | task_unlock(task); |
f0630529 | 1017 | |
ff24870f AV |
1018 | return net ? &net->ns : NULL; |
1019 | } | |
1020 | ||
1021 | static inline struct net *to_net_ns(struct ns_common *ns) | |
1022 | { | |
1023 | return container_of(ns, struct net, ns); | |
13b6f576 EB |
1024 | } |
1025 | ||
64964528 | 1026 | static void netns_put(struct ns_common *ns) |
13b6f576 | 1027 | { |
ff24870f | 1028 | put_net(to_net_ns(ns)); |
13b6f576 EB |
1029 | } |
1030 | ||
64964528 | 1031 | static int netns_install(struct nsproxy *nsproxy, struct ns_common *ns) |
13b6f576 | 1032 | { |
ff24870f | 1033 | struct net *net = to_net_ns(ns); |
142e1d1d | 1034 | |
5e4a0847 | 1035 | if (!ns_capable(net->user_ns, CAP_SYS_ADMIN) || |
c7b96acf | 1036 | !ns_capable(current_user_ns(), CAP_SYS_ADMIN)) |
142e1d1d EB |
1037 | return -EPERM; |
1038 | ||
13b6f576 | 1039 | put_net(nsproxy->net_ns); |
142e1d1d | 1040 | nsproxy->net_ns = get_net(net); |
13b6f576 EB |
1041 | return 0; |
1042 | } | |
1043 | ||
bcac25a5 AV |
1044 | static struct user_namespace *netns_owner(struct ns_common *ns) |
1045 | { | |
1046 | return to_net_ns(ns)->user_ns; | |
1047 | } | |
1048 | ||
13b6f576 EB |
1049 | const struct proc_ns_operations netns_operations = { |
1050 | .name = "net", | |
1051 | .type = CLONE_NEWNET, | |
1052 | .get = netns_get, | |
1053 | .put = netns_put, | |
1054 | .install = netns_install, | |
bcac25a5 | 1055 | .owner = netns_owner, |
13b6f576 EB |
1056 | }; |
1057 | #endif |