1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * NetLabel System
4 *
5 * The NetLabel system manages static and dynamic label mappings for network
6 * protocols such as CIPSO and RIPSO.
7 *
8 * Author: Paul Moore <paul@paul-moore.com>
9 */
10
11 /*
12 * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008
13 */
14
15 #ifndef _NETLABEL_H
16 #define _NETLABEL_H
17
18 #include <linux/types.h>
19 #include <linux/slab.h>
20 #include <linux/net.h>
21 #include <linux/skbuff.h>
22 #include <linux/in.h>
23 #include <linux/in6.h>
24 #include <net/netlink.h>
25 #include <net/request_sock.h>
26 #include <linux/refcount.h>
27
28 struct cipso_v4_doi;
29 struct calipso_doi;
30
31 /*
32 * NetLabel - A management interface for maintaining network packet label
33 * mapping tables for explicit packet labling protocols.
34 *
35 * Network protocols such as CIPSO and RIPSO require a label translation layer
36 * to convert the label on the packet into something meaningful on the host
37 * machine. In the current Linux implementation these mapping tables live
38 * inside the kernel; NetLabel provides a mechanism for user space applications
39 * to manage these mapping tables.
40 *
41 * NetLabel makes use of the Generic NETLINK mechanism as a transport layer to
42 * send messages between kernel and user space. The general format of a
43 * NetLabel message is shown below:
44 *
45 * +-----------------+-------------------+--------- --- -- -
46 * | struct nlmsghdr | struct genlmsghdr | payload
47 * +-----------------+-------------------+--------- --- -- -
48 *
49 * The 'nlmsghdr' and 'genlmsghdr' structs should be dealt with like normal.
50 * The payload is dependent on the subsystem specified in the
51 * 'nlmsghdr->nlmsg_type' and should be defined below, supporting functions
52 * should be defined in the corresponding net/netlabel/netlabel_<subsys>.h|c
53 * file. All of the fields in the NetLabel payload are NETLINK attributes, see
54 * the include/net/netlink.h file for more information on NETLINK attributes.
55 *
56 */
57
58 /*
59 * NetLabel NETLINK protocol
60 */
61
62 /* NetLabel NETLINK protocol version
63 * 1: initial version
64 * 2: added static labels for unlabeled connections
65 * 3: network selectors added to the NetLabel/LSM domain mapping and the
66 * CIPSO_V4_MAP_LOCAL CIPSO mapping was added
67 */
68 #define NETLBL_PROTO_VERSION 3
69
70 /* NetLabel NETLINK types/families */
71 #define NETLBL_NLTYPE_NONE 0
72 #define NETLBL_NLTYPE_MGMT 1
73 #define NETLBL_NLTYPE_MGMT_NAME "NLBL_MGMT"
74 #define NETLBL_NLTYPE_RIPSO 2
75 #define NETLBL_NLTYPE_RIPSO_NAME "NLBL_RIPSO"
76 #define NETLBL_NLTYPE_CIPSOV4 3
77 #define NETLBL_NLTYPE_CIPSOV4_NAME "NLBL_CIPSOv4"
78 #define NETLBL_NLTYPE_CIPSOV6 4
79 #define NETLBL_NLTYPE_CIPSOV6_NAME "NLBL_CIPSOv6"
80 #define NETLBL_NLTYPE_UNLABELED 5
81 #define NETLBL_NLTYPE_UNLABELED_NAME "NLBL_UNLBL"
82 #define NETLBL_NLTYPE_ADDRSELECT 6
83 #define NETLBL_NLTYPE_ADDRSELECT_NAME "NLBL_ADRSEL"
84 #define NETLBL_NLTYPE_CALIPSO 7
85 #define NETLBL_NLTYPE_CALIPSO_NAME "NLBL_CALIPSO"
86
87 /*
88 * NetLabel - Kernel API for accessing the network packet label mappings.
89 *
90 * The following functions are provided for use by other kernel modules,
91 * specifically kernel LSM modules, to provide a consistent, transparent API
92 * for dealing with explicit packet labeling protocols such as CIPSO and
93 * RIPSO. The functions defined here are implemented in the
94 * net/netlabel/netlabel_kapi.c file.
95 *
96 */
97
98 /* NetLabel audit information */
99 struct netlbl_audit {
100 u32 secid;
101 kuid_t loginuid;
102 unsigned int sessionid;
103 };
104
105 /*
106 * LSM security attributes
107 */
108
109 /**
110 * struct netlbl_lsm_cache - NetLabel LSM security attribute cache
111 * @refcount: atomic reference counter
112 * @free: LSM supplied function to free the cache data
113 * @data: LSM supplied cache data
114 *
115 * Description:
116 * This structure is provided for LSMs which wish to make use of the NetLabel
117 * caching mechanism to store LSM specific data/attributes in the NetLabel
118 * cache. If the LSM has to perform a lot of translation from the NetLabel
119 * security attributes into it's own internal representation then the cache
120 * mechanism can provide a way to eliminate some or all of that translation
121 * overhead on a cache hit.
122 *
123 */
124 struct netlbl_lsm_cache {
125 refcount_t refcount;
126 void (*free) (const void *data);
127 void *data;
128 };
129
130 /**
131 * struct netlbl_lsm_catmap - NetLabel LSM secattr category bitmap
132 * @startbit: the value of the lowest order bit in the bitmap
133 * @bitmap: the category bitmap
134 * @next: pointer to the next bitmap "node" or NULL
135 *
136 * Description:
137 * This structure is used to represent category bitmaps. Due to the large
138 * number of categories supported by most labeling protocols it is not
139 * practical to transfer a full bitmap internally so NetLabel adopts a sparse
140 * bitmap structure modeled after SELinux's ebitmap structure.
141 * The catmap bitmap field MUST be a power of two in length and large
142 * enough to hold at least 240 bits. Special care (i.e. check the code!)
143 * should be used when changing these values as the LSM implementation
144 * probably has functions which rely on the sizes of these types to speed
145 * processing.
146 *
147 */
148 #define NETLBL_CATMAP_MAPCNT 4
149 #define NETLBL_CATMAP_MAPSIZE (sizeof(u64) * 8)
150 #define NETLBL_CATMAP_SIZE (NETLBL_CATMAP_MAPSIZE * \
151 NETLBL_CATMAP_MAPCNT)
152 #define NETLBL_CATMAP_BIT ((u64)0x01)
153 struct netlbl_lsm_catmap {
154 u32 startbit;
155 u64 bitmap[NETLBL_CATMAP_MAPCNT];
156 struct netlbl_lsm_catmap *next;
157 };
158
159 /**
160 * struct netlbl_lsm_secattr - NetLabel LSM security attributes
161 * @flags: indicate structure attributes, see NETLBL_SECATTR_*
162 * @type: indicate the NLTYPE of the attributes
163 * @domain: the NetLabel LSM domain
164 * @cache: NetLabel LSM specific cache
165 * @attr.mls: MLS sensitivity label
166 * @attr.mls.cat: MLS category bitmap
167 * @attr.mls.lvl: MLS sensitivity level
168 * @attr.secid: LSM specific secid token
169 *
170 * Description:
171 * This structure is used to pass security attributes between NetLabel and the
172 * LSM modules. The flags field is used to specify which fields within the
173 * struct are valid and valid values can be created by bitwise OR'ing the
174 * NETLBL_SECATTR_* defines. The domain field is typically set by the LSM to
175 * specify domain specific configuration settings and is not usually used by
176 * NetLabel itself when returning security attributes to the LSM.
177 *
178 */
179 struct netlbl_lsm_secattr {
180 u32 flags;
181 /* bitmap values for 'flags' */
182 #define NETLBL_SECATTR_NONE 0x00000000
183 #define NETLBL_SECATTR_DOMAIN 0x00000001
184 #define NETLBL_SECATTR_DOMAIN_CPY (NETLBL_SECATTR_DOMAIN | \
185 NETLBL_SECATTR_FREE_DOMAIN)
186 #define NETLBL_SECATTR_CACHE 0x00000002
187 #define NETLBL_SECATTR_MLS_LVL 0x00000004
188 #define NETLBL_SECATTR_MLS_CAT 0x00000008
189 #define NETLBL_SECATTR_SECID 0x00000010
190 /* bitmap meta-values for 'flags' */
191 #define NETLBL_SECATTR_FREE_DOMAIN 0x01000000
192 #define NETLBL_SECATTR_CACHEABLE (NETLBL_SECATTR_MLS_LVL | \
193 NETLBL_SECATTR_MLS_CAT | \
194 NETLBL_SECATTR_SECID)
195 u32 type;
196 char *domain;
197 struct netlbl_lsm_cache *cache;
198 struct {
199 struct {
200 struct netlbl_lsm_catmap *cat;
201 u32 lvl;
202 } mls;
203 u32 secid;
204 } attr;
205 };
206
207 /**
208 * struct netlbl_calipso_ops - NetLabel CALIPSO operations
209 * @doi_add: add a CALIPSO DOI
210 * @doi_free: free a CALIPSO DOI
211 * @doi_getdef: returns a reference to a DOI
212 * @doi_putdef: releases a reference of a DOI
213 * @doi_walk: enumerate the DOI list
214 * @sock_getattr: retrieve the socket's attr
215 * @sock_setattr: set the socket's attr
216 * @sock_delattr: remove the socket's attr
217 * @req_setattr: set the req socket's attr
218 * @req_delattr: remove the req socket's attr
219 * @opt_getattr: retrieve attr from memory block
220 * @skbuff_optptr: find option in packet
221 * @skbuff_setattr: set the skbuff's attr
222 * @skbuff_delattr: remove the skbuff's attr
223 * @cache_invalidate: invalidate cache
224 * @cache_add: add cache entry
225 *
226 * Description:
227 * This structure is filled out by the CALIPSO engine and passed
228 * to the NetLabel core via a call to netlbl_calipso_ops_register().
229 * It enables the CALIPSO engine (and hence IPv6) to be compiled
230 * as a module.
231 */
232 struct netlbl_calipso_ops {
233 int (*doi_add)(struct calipso_doi *doi_def,
234 struct netlbl_audit *audit_info);
235 void (*doi_free)(struct calipso_doi *doi_def);
236 int (*doi_remove)(u32 doi, struct netlbl_audit *audit_info);
237 struct calipso_doi *(*doi_getdef)(u32 doi);
238 void (*doi_putdef)(struct calipso_doi *doi_def);
239 int (*doi_walk)(u32 *skip_cnt,
240 int (*callback)(struct calipso_doi *doi_def, void *arg),
241 void *cb_arg);
242 int (*sock_getattr)(struct sock *sk,
243 struct netlbl_lsm_secattr *secattr);
244 int (*sock_setattr)(struct sock *sk,
245 const struct calipso_doi *doi_def,
246 const struct netlbl_lsm_secattr *secattr);
247 void (*sock_delattr)(struct sock *sk);
248 int (*req_setattr)(struct request_sock *req,
249 const struct calipso_doi *doi_def,
250 const struct netlbl_lsm_secattr *secattr);
251 void (*req_delattr)(struct request_sock *req);
252 int (*opt_getattr)(const unsigned char *calipso,
253 struct netlbl_lsm_secattr *secattr);
254 unsigned char *(*skbuff_optptr)(const struct sk_buff *skb);
255 int (*skbuff_setattr)(struct sk_buff *skb,
256 const struct calipso_doi *doi_def,
257 const struct netlbl_lsm_secattr *secattr);
258 int (*skbuff_delattr)(struct sk_buff *skb);
259 void (*cache_invalidate)(void);
260 int (*cache_add)(const unsigned char *calipso_ptr,
261 const struct netlbl_lsm_secattr *secattr);
262 };
263
264 /*
265 * LSM security attribute operations (inline)
266 */
267
268 /**
269 * netlbl_secattr_cache_alloc - Allocate and initialize a secattr cache
270 * @flags: the memory allocation flags
271 *
272 * Description:
273 * Allocate and initialize a netlbl_lsm_cache structure. Returns a pointer
274 * on success, NULL on failure.
275 *
276 */
277 static inline struct netlbl_lsm_cache *netlbl_secattr_cache_alloc_noprof(gfp_t flags)
278 {
279 struct netlbl_lsm_cache *cache;
280
281 cache = kzalloc_noprof(sizeof(*cache), flags);
282 if (cache)
283 refcount_set(&cache->refcount, 1);
284 return cache;
285 }
286 #define netlbl_secattr_cache_alloc(...) \
287 alloc_hooks(netlbl_secattr_cache_alloc_noprof(__VA_ARGS__))
288
289 /**
290 * netlbl_secattr_cache_free - Frees a netlbl_lsm_cache struct
291 * @cache: the struct to free
292 *
293 * Description:
294 * Frees @secattr including all of the internal buffers.
295 *
296 */
297 static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache)
298 {
299 if (!refcount_dec_and_test(&cache->refcount))
300 return;
301
302 if (cache->free)
303 cache->free(cache->data);
304 kfree(cache);
305 }
306
307 /**
308 * netlbl_catmap_alloc - Allocate a LSM secattr catmap
309 * @flags: memory allocation flags
310 *
311 * Description:
312 * Allocate memory for a LSM secattr catmap, returns a pointer on success, NULL
313 * on failure.
314 *
315 */
316 static inline struct netlbl_lsm_catmap *netlbl_catmap_alloc_noprof(gfp_t flags)
317 {
318 return kzalloc_noprof(sizeof(struct netlbl_lsm_catmap), flags);
319 }
320 #define netlbl_catmap_alloc(...) alloc_hooks(netlbl_catmap_alloc_noprof(__VA_ARGS__))
321
322 /**
323 * netlbl_catmap_free - Free a LSM secattr catmap
324 * @catmap: the category bitmap
325 *
326 * Description:
327 * Free a LSM secattr catmap.
328 *
329 */
330 static inline void netlbl_catmap_free(struct netlbl_lsm_catmap *catmap)
331 {
332 struct netlbl_lsm_catmap *iter;
333
334 while (catmap) {
335 iter = catmap;
336 catmap = catmap->next;
337 kfree(iter);
338 }
339 }
340
341 /**
342 * netlbl_secattr_init - Initialize a netlbl_lsm_secattr struct
343 * @secattr: the struct to initialize
344 *
345 * Description:
346 * Initialize an already allocated netlbl_lsm_secattr struct.
347 *
348 */
349 static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr)
350 {
351 memset(secattr, 0, sizeof(*secattr));
352 }
353
354 /**
355 * netlbl_secattr_destroy - Clears a netlbl_lsm_secattr struct
356 * @secattr: the struct to clear
357 *
358 * Description:
359 * Destroys the @secattr struct, including freeing all of the internal buffers.
360 * The struct must be reset with a call to netlbl_secattr_init() before reuse.
361 *
362 */
363 static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr)
364 {
365 if (secattr->flags & NETLBL_SECATTR_FREE_DOMAIN)
366 kfree(secattr->domain);
367 if (secattr->flags & NETLBL_SECATTR_CACHE)
368 netlbl_secattr_cache_free(secattr->cache);
369 if (secattr->flags & NETLBL_SECATTR_MLS_CAT)
370 netlbl_catmap_free(secattr->attr.mls.cat);
371 }
372
373 /**
374 * netlbl_secattr_alloc - Allocate and initialize a netlbl_lsm_secattr struct
375 * @flags: the memory allocation flags
376 *
377 * Description:
378 * Allocate and initialize a netlbl_lsm_secattr struct. Returns a valid
379 * pointer on success, or NULL on failure.
380 *
381 */
382 static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc_noprof(gfp_t flags)
383 {
384 return kzalloc_noprof(sizeof(struct netlbl_lsm_secattr), flags);
385 }
386 #define netlbl_secattr_alloc(...) alloc_hooks(netlbl_secattr_alloc_noprof(__VA_ARGS__))
387
388 /**
389 * netlbl_secattr_free - Frees a netlbl_lsm_secattr struct
390 * @secattr: the struct to free
391 *
392 * Description:
393 * Frees @secattr including all of the internal buffers.
394 *
395 */
396 static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr)
397 {
398 netlbl_secattr_destroy(secattr);
399 kfree(secattr);
400 }
401
402 #ifdef CONFIG_NETLABEL
403 /*
404 * LSM configuration operations
405 */
406 int netlbl_cfg_map_del(const char *domain,
407 u16 family,
408 const void *addr,
409 const void *mask,
410 struct netlbl_audit *audit_info);
411 int netlbl_cfg_unlbl_map_add(const char *domain,
412 u16 family,
413 const void *addr,
414 const void *mask,
415 struct netlbl_audit *audit_info);
416 int netlbl_cfg_unlbl_static_add(struct net *net,
417 const char *dev_name,
418 const void *addr,
419 const void *mask,
420 u16 family,
421 u32 secid,
422 struct netlbl_audit *audit_info);
423 int netlbl_cfg_unlbl_static_del(struct net *net,
424 const char *dev_name,
425 const void *addr,
426 const void *mask,
427 u16 family,
428 struct netlbl_audit *audit_info);
429 int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
430 struct netlbl_audit *audit_info);
431 void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info);
432 int netlbl_cfg_cipsov4_map_add(u32 doi,
433 const char *domain,
434 const struct in_addr *addr,
435 const struct in_addr *mask,
436 struct netlbl_audit *audit_info);
437 int netlbl_cfg_calipso_add(struct calipso_doi *doi_def,
438 struct netlbl_audit *audit_info);
439 void netlbl_cfg_calipso_del(u32 doi, struct netlbl_audit *audit_info);
440 int netlbl_cfg_calipso_map_add(u32 doi,
441 const char *domain,
442 const struct in6_addr *addr,
443 const struct in6_addr *mask,
444 struct netlbl_audit *audit_info);
445 /*
446 * LSM security attribute operations
447 */
448 int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset);
449 int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset);
450 int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap,
451 u32 *offset,
452 unsigned long *bitmap);
453 int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap,
454 u32 bit,
455 gfp_t flags);
456 int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap,
457 u32 start,
458 u32 end,
459 gfp_t flags);
460 int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
461 u32 offset,
462 unsigned long bitmap,
463 gfp_t flags);
464
465 /* Bitmap functions
466 */
467 int netlbl_bitmap_walk(const unsigned char *bitmap, u32 bitmap_len,
468 u32 offset, u8 state);
469 void netlbl_bitmap_setbit(unsigned char *bitmap, u32 bit, u8 state);
470
471 /*
472 * LSM protocol operations (NetLabel LSM/kernel API)
473 */
474 int netlbl_enabled(void);
475 int netlbl_sock_setattr(struct sock *sk,
476 u16 family,
477 const struct netlbl_lsm_secattr *secattr,
478 bool sk_locked);
479 void netlbl_sock_delattr(struct sock *sk);
480 int netlbl_sock_getattr(struct sock *sk,
481 struct netlbl_lsm_secattr *secattr);
482 int netlbl_conn_setattr(struct sock *sk,
483 struct sockaddr *addr,
484 const struct netlbl_lsm_secattr *secattr);
485 int netlbl_req_setattr(struct request_sock *req,
486 const struct netlbl_lsm_secattr *secattr);
487 void netlbl_req_delattr(struct request_sock *req);
488 int netlbl_skbuff_setattr(struct sk_buff *skb,
489 u16 family,
490 const struct netlbl_lsm_secattr *secattr);
491 int netlbl_skbuff_getattr(const struct sk_buff *skb,
492 u16 family,
493 struct netlbl_lsm_secattr *secattr);
494 void netlbl_skbuff_err(struct sk_buff *skb, u16 family, int error, int gateway);
495 bool netlbl_sk_lock_check(struct sock *sk);
496
497 /*
498 * LSM label mapping cache operations
499 */
500 void netlbl_cache_invalidate(void);
501 int netlbl_cache_add(const struct sk_buff *skb, u16 family,
502 const struct netlbl_lsm_secattr *secattr);
503
504 /*
505 * Protocol engine operations
506 */
507 struct audit_buffer *netlbl_audit_start(int type,
508 struct netlbl_audit *audit_info);
509 #else
510 static inline int netlbl_cfg_map_del(const char *domain,
511 u16 family,
512 const void *addr,
513 const void *mask,
514 struct netlbl_audit *audit_info)
515 {
516 return -ENOSYS;
517 }
518 static inline int netlbl_cfg_unlbl_map_add(const char *domain,
519 u16 family,
520 void *addr,
521 void *mask,
522 struct netlbl_audit *audit_info)
523 {
524 return -ENOSYS;
525 }
526 static inline int netlbl_cfg_unlbl_static_add(struct net *net,
527 const char *dev_name,
528 const void *addr,
529 const void *mask,
530 u16 family,
531 u32 secid,
532 struct netlbl_audit *audit_info)
533 {
534 return -ENOSYS;
535 }
536 static inline int netlbl_cfg_unlbl_static_del(struct net *net,
537 const char *dev_name,
538 const void *addr,
539 const void *mask,
540 u16 family,
541 struct netlbl_audit *audit_info)
542 {
543 return -ENOSYS;
544 }
545 static inline int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
546 struct netlbl_audit *audit_info)
547 {
548 return -ENOSYS;
549 }
550 static inline void netlbl_cfg_cipsov4_del(u32 doi,
551 struct netlbl_audit *audit_info)
552 {
553 return;
554 }
555 static inline int netlbl_cfg_cipsov4_map_add(u32 doi,
556 const char *domain,
557 const struct in_addr *addr,
558 const struct in_addr *mask,
559 struct netlbl_audit *audit_info)
560 {
561 return -ENOSYS;
562 }
563 static inline int netlbl_cfg_calipso_add(struct calipso_doi *doi_def,
564 struct netlbl_audit *audit_info)
565 {
566 return -ENOSYS;
567 }
568 static inline void netlbl_cfg_calipso_del(u32 doi,
569 struct netlbl_audit *audit_info)
570 {
571 return;
572 }
573 static inline int netlbl_cfg_calipso_map_add(u32 doi,
574 const char *domain,
575 const struct in6_addr *addr,
576 const struct in6_addr *mask,
577 struct netlbl_audit *audit_info)
578 {
579 return -ENOSYS;
580 }
581 static inline int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap,
582 u32 offset)
583 {
584 return -ENOENT;
585 }
586 static inline int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap,
587 u32 offset)
588 {
589 return -ENOENT;
590 }
591 static inline int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap,
592 u32 *offset,
593 unsigned long *bitmap)
594 {
595 return 0;
596 }
597 static inline int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap,
598 u32 bit,
599 gfp_t flags)
600 {
601 return 0;
602 }
603 static inline int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap,
604 u32 start,
605 u32 end,
606 gfp_t flags)
607 {
608 return 0;
609 }
610 static inline int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
611 u32 offset,
612 unsigned long bitmap,
613 gfp_t flags)
614 {
615 return 0;
616 }
617 static inline int netlbl_enabled(void)
618 {
619 return 0;
620 }
621 static inline int netlbl_sock_setattr(struct sock *sk,
622 u16 family,
623 const struct netlbl_lsm_secattr *secattr,
624 bool sk_locked)
625 {
626 return -ENOSYS;
627 }
628 static inline void netlbl_sock_delattr(struct sock *sk)
629 {
630 }
631 static inline int netlbl_sock_getattr(struct sock *sk,
632 struct netlbl_lsm_secattr *secattr)
633 {
634 return -ENOSYS;
635 }
636 static inline int netlbl_conn_setattr(struct sock *sk,
637 struct sockaddr *addr,
638 const struct netlbl_lsm_secattr *secattr)
639 {
640 return -ENOSYS;
641 }
642 static inline int netlbl_req_setattr(struct request_sock *req,
643 const struct netlbl_lsm_secattr *secattr)
644 {
645 return -ENOSYS;
646 }
647 static inline void netlbl_req_delattr(struct request_sock *req)
648 {
649 return;
650 }
651 static inline int netlbl_skbuff_setattr(struct sk_buff *skb,
652 u16 family,
653 const struct netlbl_lsm_secattr *secattr)
654 {
655 return -ENOSYS;
656 }
657 static inline int netlbl_skbuff_getattr(const struct sk_buff *skb,
658 u16 family,
659 struct netlbl_lsm_secattr *secattr)
660 {
661 return -ENOSYS;
662 }
663 static inline void netlbl_skbuff_err(struct sk_buff *skb,
664 int error,
665 int gateway)
666 {
667 return;
668 }
669 static inline void netlbl_cache_invalidate(void)
670 {
671 return;
672 }
673 static inline int netlbl_cache_add(const struct sk_buff *skb, u16 family,
674 const struct netlbl_lsm_secattr *secattr)
675 {
676 return 0;
677 }
678 static inline struct audit_buffer *netlbl_audit_start(int type,
679 struct netlbl_audit *audit_info)
680 {
681 return NULL;
682 }
683
684 static inline bool netlbl_sk_lock_check(struct sock *sk)
685 {
686 return true;
687 }
688 #endif /* CONFIG_NETLABEL */
689
690 const struct netlbl_calipso_ops *
691 netlbl_calipso_ops_register(const struct netlbl_calipso_ops *ops);
692
693 #endif /* _NETLABEL_H */
694
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