1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BPF_CGROUP_H
3 #define _BPF_CGROUP_H
4
5 #include <linux/bpf.h>
6 #include <linux/errno.h>
7 #include <linux/jump_label.h>
8 #include <linux/percpu.h>
9 #include <linux/percpu-refcount.h>
10 #include <linux/rbtree.h>
11 #include <uapi/linux/bpf.h>
12
13 struct sock;
14 struct sockaddr;
15 struct cgroup;
16 struct sk_buff;
17 struct bpf_map;
18 struct bpf_prog;
19 struct bpf_sock_ops_kern;
20 struct bpf_cgroup_storage;
21 struct ctl_table;
22 struct ctl_table_header;
23
24 #ifdef CONFIG_CGROUP_BPF
25
26 extern struct static_key_false cgroup_bpf_enabled_key[MAX_BPF_ATTACH_TYPE];
27 #define cgroup_bpf_enabled(type) static_branch_unlikely(&cgroup_bpf_enabled_key[type])
28
29 DECLARE_PER_CPU(struct bpf_cgroup_storage*,
30 bpf_cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE]);
31
32 #define for_each_cgroup_storage_type(stype) \
33 for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)
34
35 struct bpf_cgroup_storage_map;
36
37 struct bpf_storage_buffer {
38 struct rcu_head rcu;
39 char data[];
40 };
41
42 struct bpf_cgroup_storage {
43 union {
44 struct bpf_storage_buffer *buf;
45 void __percpu *percpu_buf;
46 };
47 struct bpf_cgroup_storage_map *map;
48 struct bpf_cgroup_storage_key key;
49 struct list_head list_map;
50 struct list_head list_cg;
51 struct rb_node node;
52 struct rcu_head rcu;
53 };
54
55 struct bpf_cgroup_link {
56 struct bpf_link link;
57 struct cgroup *cgroup;
58 enum bpf_attach_type type;
59 };
60
61 struct bpf_prog_list {
62 struct list_head node;
63 struct bpf_prog *prog;
64 struct bpf_cgroup_link *link;
65 struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE];
66 };
67
68 struct bpf_prog_array;
69
70 struct cgroup_bpf {
71 /* array of effective progs in this cgroup */
72 struct bpf_prog_array __rcu *effective[MAX_BPF_ATTACH_TYPE];
73
74 /* attached progs to this cgroup and attach flags
75 * when flags == 0 or BPF_F_ALLOW_OVERRIDE the progs list will
76 * have either zero or one element
77 * when BPF_F_ALLOW_MULTI the list can have up to BPF_CGROUP_MAX_PROGS
78 */
79 struct list_head progs[MAX_BPF_ATTACH_TYPE];
80 u32 flags[MAX_BPF_ATTACH_TYPE];
81
82 /* list of cgroup shared storages */
83 struct list_head storages;
84
85 /* temp storage for effective prog array used by prog_attach/detach */
86 struct bpf_prog_array *inactive;
87
88 /* reference counter used to detach bpf programs after cgroup removal */
89 struct percpu_ref refcnt;
90
91 /* cgroup_bpf is released using a work queue */
92 struct work_struct release_work;
93 };
94
95 int cgroup_bpf_inherit(struct cgroup *cgrp);
96 void cgroup_bpf_offline(struct cgroup *cgrp);
97
98 int __cgroup_bpf_attach(struct cgroup *cgrp,
99 struct bpf_prog *prog, struct bpf_prog *replace_prog,
100 struct bpf_cgroup_link *link,
101 enum bpf_attach_type type, u32 flags);
102 int __cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
103 struct bpf_cgroup_link *link,
104 enum bpf_attach_type type);
105 int __cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
106 union bpf_attr __user *uattr);
107
108 /* Wrapper for __cgroup_bpf_*() protected by cgroup_mutex */
109 int cgroup_bpf_attach(struct cgroup *cgrp,
110 struct bpf_prog *prog, struct bpf_prog *replace_prog,
111 struct bpf_cgroup_link *link, enum bpf_attach_type type,
112 u32 flags);
113 int cgroup_bpf_detach(struct cgroup *cgrp, struct bpf_prog *prog,
114 enum bpf_attach_type type);
115 int cgroup_bpf_query(struct cgroup *cgrp, const union bpf_attr *attr,
116 union bpf_attr __user *uattr);
117
118 int __cgroup_bpf_run_filter_skb(struct sock *sk,
119 struct sk_buff *skb,
120 enum bpf_attach_type type);
121
122 int __cgroup_bpf_run_filter_sk(struct sock *sk,
123 enum bpf_attach_type type);
124
125 int __cgroup_bpf_run_filter_sock_addr(struct sock *sk,
126 struct sockaddr *uaddr,
127 enum bpf_attach_type type,
128 void *t_ctx,
129 u32 *flags);
130
131 int __cgroup_bpf_run_filter_sock_ops(struct sock *sk,
132 struct bpf_sock_ops_kern *sock_ops,
133 enum bpf_attach_type type);
134
135 int __cgroup_bpf_check_dev_permission(short dev_type, u32 major, u32 minor,
136 short access, enum bpf_attach_type type);
137
138 int __cgroup_bpf_run_filter_sysctl(struct ctl_table_header *head,
139 struct ctl_table *table, int write,
140 char **buf, size_t *pcount, loff_t *ppos,
141 enum bpf_attach_type type);
142
143 int __cgroup_bpf_run_filter_setsockopt(struct sock *sock, int *level,
144 int *optname, char __user *optval,
145 int *optlen, char **kernel_optval);
146 int __cgroup_bpf_run_filter_getsockopt(struct sock *sk, int level,
147 int optname, char __user *optval,
148 int __user *optlen, int max_optlen,
149 int retval);
150
151 int __cgroup_bpf_run_filter_getsockopt_kern(struct sock *sk, int level,
152 int optname, void *optval,
153 int *optlen, int retval);
154
155 static inline enum bpf_cgroup_storage_type cgroup_storage_type(
156 struct bpf_map *map)
157 {
158 if (map->map_type == BPF_MAP_TYPE_PERCPU_CGROUP_STORAGE)
159 return BPF_CGROUP_STORAGE_PERCPU;
160
161 return BPF_CGROUP_STORAGE_SHARED;
162 }
163
164 static inline void bpf_cgroup_storage_set(struct bpf_cgroup_storage
165 *storage[MAX_BPF_CGROUP_STORAGE_TYPE])
166 {
167 enum bpf_cgroup_storage_type stype;
168
169 for_each_cgroup_storage_type(stype)
170 this_cpu_write(bpf_cgroup_storage[stype], storage[stype]);
171 }
172
173 struct bpf_cgroup_storage *
174 cgroup_storage_lookup(struct bpf_cgroup_storage_map *map,
175 void *key, bool locked);
176 struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(struct bpf_prog *prog,
177 enum bpf_cgroup_storage_type stype);
178 void bpf_cgroup_storage_free(struct bpf_cgroup_storage *storage);
179 void bpf_cgroup_storage_link(struct bpf_cgroup_storage *storage,
180 struct cgroup *cgroup,
181 enum bpf_attach_type type);
182 void bpf_cgroup_storage_unlink(struct bpf_cgroup_storage *storage);
183 int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux, struct bpf_map *map);
184
185 int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key, void *value);
186 int bpf_percpu_cgroup_storage_update(struct bpf_map *map, void *key,
187 void *value, u64 flags);
188
189 /* Wrappers for __cgroup_bpf_run_filter_skb() guarded by cgroup_bpf_enabled. */
190 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk, skb) \
191 ({ \
192 int __ret = 0; \
193 if (cgroup_bpf_enabled(BPF_CGROUP_INET_INGRESS)) \
194 __ret = __cgroup_bpf_run_filter_skb(sk, skb, \
195 BPF_CGROUP_INET_INGRESS); \
196 \
197 __ret; \
198 })
199
200 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk, skb) \
201 ({ \
202 int __ret = 0; \
203 if (cgroup_bpf_enabled(BPF_CGROUP_INET_EGRESS) && sk && sk == skb->sk) { \
204 typeof(sk) __sk = sk_to_full_sk(sk); \
205 if (sk_fullsock(__sk)) \
206 __ret = __cgroup_bpf_run_filter_skb(__sk, skb, \
207 BPF_CGROUP_INET_EGRESS); \
208 } \
209 __ret; \
210 })
211
212 #define BPF_CGROUP_RUN_SK_PROG(sk, type) \
213 ({ \
214 int __ret = 0; \
215 if (cgroup_bpf_enabled(type)) { \
216 __ret = __cgroup_bpf_run_filter_sk(sk, type); \
217 } \
218 __ret; \
219 })
220
221 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) \
222 BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET_SOCK_CREATE)
223
224 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk) \
225 BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET_SOCK_RELEASE)
226
227 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) \
228 BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET4_POST_BIND)
229
230 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) \
231 BPF_CGROUP_RUN_SK_PROG(sk, BPF_CGROUP_INET6_POST_BIND)
232
233 #define BPF_CGROUP_RUN_SA_PROG(sk, uaddr, type) \
234 ({ \
235 u32 __unused_flags; \
236 int __ret = 0; \
237 if (cgroup_bpf_enabled(type)) \
238 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type, \
239 NULL, \
240 &__unused_flags); \
241 __ret; \
242 })
243
244 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, type, t_ctx) \
245 ({ \
246 u32 __unused_flags; \
247 int __ret = 0; \
248 if (cgroup_bpf_enabled(type)) { \
249 lock_sock(sk); \
250 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type, \
251 t_ctx, \
252 &__unused_flags); \
253 release_sock(sk); \
254 } \
255 __ret; \
256 })
257
258 /* BPF_CGROUP_INET4_BIND and BPF_CGROUP_INET6_BIND can return extra flags
259 * via upper bits of return code. The only flag that is supported
260 * (at bit position 0) is to indicate CAP_NET_BIND_SERVICE capability check
261 * should be bypassed (BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE).
262 */
263 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, type, bind_flags) \
264 ({ \
265 u32 __flags = 0; \
266 int __ret = 0; \
267 if (cgroup_bpf_enabled(type)) { \
268 lock_sock(sk); \
269 __ret = __cgroup_bpf_run_filter_sock_addr(sk, uaddr, type, \
270 NULL, &__flags); \
271 release_sock(sk); \
272 if (__flags & BPF_RET_BIND_NO_CAP_NET_BIND_SERVICE) \
273 *bind_flags |= BIND_NO_CAP_NET_BIND_SERVICE; \
274 } \
275 __ret; \
276 })
277
278 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) \
279 ((cgroup_bpf_enabled(BPF_CGROUP_INET4_CONNECT) || \
280 cgroup_bpf_enabled(BPF_CGROUP_INET6_CONNECT)) && \
281 (sk)->sk_prot->pre_connect)
282
283 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr) \
284 BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET4_CONNECT)
285
286 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr) \
287 BPF_CGROUP_RUN_SA_PROG(sk, uaddr, BPF_CGROUP_INET6_CONNECT)
288
289 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr) \
290 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_INET4_CONNECT, NULL)
291
292 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr) \
293 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_INET6_CONNECT, NULL)
294
295 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx) \
296 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP4_SENDMSG, t_ctx)
297
298 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx) \
299 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP6_SENDMSG, t_ctx)
300
301 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr) \
302 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP4_RECVMSG, NULL)
303
304 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) \
305 BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, BPF_CGROUP_UDP6_RECVMSG, NULL)
306
307 /* The SOCK_OPS"_SK" macro should be used when sock_ops->sk is not a
308 * fullsock and its parent fullsock cannot be traced by
309 * sk_to_full_sk().
310 *
311 * e.g. sock_ops->sk is a request_sock and it is under syncookie mode.
312 * Its listener-sk is not attached to the rsk_listener.
313 * In this case, the caller holds the listener-sk (unlocked),
314 * set its sock_ops->sk to req_sk, and call this SOCK_OPS"_SK" with
315 * the listener-sk such that the cgroup-bpf-progs of the
316 * listener-sk will be run.
317 *
318 * Regardless of syncookie mode or not,
319 * calling bpf_setsockopt on listener-sk will not make sense anyway,
320 * so passing 'sock_ops->sk == req_sk' to the bpf prog is appropriate here.
321 */
322 #define BPF_CGROUP_RUN_PROG_SOCK_OPS_SK(sock_ops, sk) \
323 ({ \
324 int __ret = 0; \
325 if (cgroup_bpf_enabled(BPF_CGROUP_SOCK_OPS)) \
326 __ret = __cgroup_bpf_run_filter_sock_ops(sk, \
327 sock_ops, \
328 BPF_CGROUP_SOCK_OPS); \
329 __ret; \
330 })
331
332 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) \
333 ({ \
334 int __ret = 0; \
335 if (cgroup_bpf_enabled(BPF_CGROUP_SOCK_OPS) && (sock_ops)->sk) { \
336 typeof(sk) __sk = sk_to_full_sk((sock_ops)->sk); \
337 if (__sk && sk_fullsock(__sk)) \
338 __ret = __cgroup_bpf_run_filter_sock_ops(__sk, \
339 sock_ops, \
340 BPF_CGROUP_SOCK_OPS); \
341 } \
342 __ret; \
343 })
344
345 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type, major, minor, access) \
346 ({ \
347 int __ret = 0; \
348 if (cgroup_bpf_enabled(BPF_CGROUP_DEVICE)) \
349 __ret = __cgroup_bpf_check_dev_permission(type, major, minor, \
350 access, \
351 BPF_CGROUP_DEVICE); \
352 \
353 __ret; \
354 })
355
356
357 #define BPF_CGROUP_RUN_PROG_SYSCTL(head, table, write, buf, count, pos) \
358 ({ \
359 int __ret = 0; \
360 if (cgroup_bpf_enabled(BPF_CGROUP_SYSCTL)) \
361 __ret = __cgroup_bpf_run_filter_sysctl(head, table, write, \
362 buf, count, pos, \
363 BPF_CGROUP_SYSCTL); \
364 __ret; \
365 })
366
367 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
368 kernel_optval) \
369 ({ \
370 int __ret = 0; \
371 if (cgroup_bpf_enabled(BPF_CGROUP_SETSOCKOPT)) \
372 __ret = __cgroup_bpf_run_filter_setsockopt(sock, level, \
373 optname, optval, \
374 optlen, \
375 kernel_optval); \
376 __ret; \
377 })
378
379 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) \
380 ({ \
381 int __ret = 0; \
382 if (cgroup_bpf_enabled(BPF_CGROUP_GETSOCKOPT)) \
383 get_user(__ret, optlen); \
384 __ret; \
385 })
386
387 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, optlen, \
388 max_optlen, retval) \
389 ({ \
390 int __ret = retval; \
391 if (cgroup_bpf_enabled(BPF_CGROUP_GETSOCKOPT)) \
392 if (!(sock)->sk_prot->bpf_bypass_getsockopt || \
393 !INDIRECT_CALL_INET_1((sock)->sk_prot->bpf_bypass_getsockopt, \
394 tcp_bpf_bypass_getsockopt, \
395 level, optname)) \
396 __ret = __cgroup_bpf_run_filter_getsockopt( \
397 sock, level, optname, optval, optlen, \
398 max_optlen, retval); \
399 __ret; \
400 })
401
402 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval, \
403 optlen, retval) \
404 ({ \
405 int __ret = retval; \
406 if (cgroup_bpf_enabled(BPF_CGROUP_GETSOCKOPT)) \
407 __ret = __cgroup_bpf_run_filter_getsockopt_kern( \
408 sock, level, optname, optval, optlen, retval); \
409 __ret; \
410 })
411
412 int cgroup_bpf_prog_attach(const union bpf_attr *attr,
413 enum bpf_prog_type ptype, struct bpf_prog *prog);
414 int cgroup_bpf_prog_detach(const union bpf_attr *attr,
415 enum bpf_prog_type ptype);
416 int cgroup_bpf_link_attach(const union bpf_attr *attr, struct bpf_prog *prog);
417 int cgroup_bpf_prog_query(const union bpf_attr *attr,
418 union bpf_attr __user *uattr);
419 #else
420
421 struct bpf_prog;
422 struct cgroup_bpf {};
423 static inline int cgroup_bpf_inherit(struct cgroup *cgrp) { return 0; }
424 static inline void cgroup_bpf_offline(struct cgroup *cgrp) {}
425
426 static inline int cgroup_bpf_prog_attach(const union bpf_attr *attr,
427 enum bpf_prog_type ptype,
428 struct bpf_prog *prog)
429 {
430 return -EINVAL;
431 }
432
433 static inline int cgroup_bpf_prog_detach(const union bpf_attr *attr,
434 enum bpf_prog_type ptype)
435 {
436 return -EINVAL;
437 }
438
439 static inline int cgroup_bpf_link_attach(const union bpf_attr *attr,
440 struct bpf_prog *prog)
441 {
442 return -EINVAL;
443 }
444
445 static inline int cgroup_bpf_prog_query(const union bpf_attr *attr,
446 union bpf_attr __user *uattr)
447 {
448 return -EINVAL;
449 }
450
451 static inline void bpf_cgroup_storage_set(
452 struct bpf_cgroup_storage *storage[MAX_BPF_CGROUP_STORAGE_TYPE]) {}
453 static inline int bpf_cgroup_storage_assign(struct bpf_prog_aux *aux,
454 struct bpf_map *map) { return 0; }
455 static inline struct bpf_cgroup_storage *bpf_cgroup_storage_alloc(
456 struct bpf_prog *prog, enum bpf_cgroup_storage_type stype) { return NULL; }
457 static inline void bpf_cgroup_storage_free(
458 struct bpf_cgroup_storage *storage) {}
459 static inline int bpf_percpu_cgroup_storage_copy(struct bpf_map *map, void *key,
460 void *value) {
461 return 0;
462 }
463 static inline int bpf_percpu_cgroup_storage_update(struct bpf_map *map,
464 void *key, void *value, u64 flags) {
465 return 0;
466 }
467
468 #define cgroup_bpf_enabled(type) (0)
469 #define BPF_CGROUP_RUN_SA_PROG_LOCK(sk, uaddr, type, t_ctx) ({ 0; })
470 #define BPF_CGROUP_PRE_CONNECT_ENABLED(sk) (0)
471 #define BPF_CGROUP_RUN_PROG_INET_INGRESS(sk,skb) ({ 0; })
472 #define BPF_CGROUP_RUN_PROG_INET_EGRESS(sk,skb) ({ 0; })
473 #define BPF_CGROUP_RUN_PROG_INET_SOCK(sk) ({ 0; })
474 #define BPF_CGROUP_RUN_PROG_INET_SOCK_RELEASE(sk) ({ 0; })
475 #define BPF_CGROUP_RUN_PROG_INET_BIND_LOCK(sk, uaddr, type, flags) ({ 0; })
476 #define BPF_CGROUP_RUN_PROG_INET4_POST_BIND(sk) ({ 0; })
477 #define BPF_CGROUP_RUN_PROG_INET6_POST_BIND(sk) ({ 0; })
478 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT(sk, uaddr) ({ 0; })
479 #define BPF_CGROUP_RUN_PROG_INET4_CONNECT_LOCK(sk, uaddr) ({ 0; })
480 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT(sk, uaddr) ({ 0; })
481 #define BPF_CGROUP_RUN_PROG_INET6_CONNECT_LOCK(sk, uaddr) ({ 0; })
482 #define BPF_CGROUP_RUN_PROG_UDP4_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
483 #define BPF_CGROUP_RUN_PROG_UDP6_SENDMSG_LOCK(sk, uaddr, t_ctx) ({ 0; })
484 #define BPF_CGROUP_RUN_PROG_UDP4_RECVMSG_LOCK(sk, uaddr) ({ 0; })
485 #define BPF_CGROUP_RUN_PROG_UDP6_RECVMSG_LOCK(sk, uaddr) ({ 0; })
486 #define BPF_CGROUP_RUN_PROG_SOCK_OPS(sock_ops) ({ 0; })
487 #define BPF_CGROUP_RUN_PROG_DEVICE_CGROUP(type,major,minor,access) ({ 0; })
488 #define BPF_CGROUP_RUN_PROG_SYSCTL(head,table,write,buf,count,pos) ({ 0; })
489 #define BPF_CGROUP_GETSOCKOPT_MAX_OPTLEN(optlen) ({ 0; })
490 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT(sock, level, optname, optval, \
491 optlen, max_optlen, retval) ({ retval; })
492 #define BPF_CGROUP_RUN_PROG_GETSOCKOPT_KERN(sock, level, optname, optval, \
493 optlen, retval) ({ retval; })
494 #define BPF_CGROUP_RUN_PROG_SETSOCKOPT(sock, level, optname, optval, optlen, \
495 kernel_optval) ({ 0; })
496
497 #define for_each_cgroup_storage_type(stype) for (; false; )
498
499 #endif /* CONFIG_CGROUP_BPF */
500
501 #endif /* _BPF_CGROUP_H */
502
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.