1 /*
2  * NetLabel System
3  *
4  * The NetLabel system manages static and dynamic label mappings for network
5  * protocols such as CIPSO and RIPSO.
6  *
7  * Author: Paul Moore <paul@paul-moore.com>
8  *
9  */
10 
11 /*
12  * (c) Copyright Hewlett-Packard Development Company, L.P., 2006, 2008
13  *
14  * This program is free software;  you can redistribute it and/or modify
15  * it under the terms of the GNU General Public License as published by
16  * the Free Software Foundation; either version 2 of the License, or
17  * (at your option) any later version.
18  *
19  * This program is distributed in the hope that it will be useful,
20  * but WITHOUT ANY WARRANTY;  without even the implied warranty of
21  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
22  * the GNU General Public License for more details.
23  *
24  * You should have received a copy of the GNU General Public License
25  * along with this program;  if not, see <http://www.gnu.org/licenses/>.
26  *
27  */
28 
29 #ifndef _NETLABEL_H
30 #define _NETLABEL_H
31 
32 #include <linux/types.h>
33 #include <linux/slab.h>
34 #include <linux/net.h>
35 #include <linux/skbuff.h>
36 #include <linux/in.h>
37 #include <linux/in6.h>
38 #include <net/netlink.h>
39 #include <net/request_sock.h>
40 #include <linux/refcount.h>
41 
42 struct cipso_v4_doi;
43 struct calipso_doi;
44 
45 /*
46  * NetLabel - A management interface for maintaining network packet label
47  *            mapping tables for explicit packet labling protocols.
48  *
49  * Network protocols such as CIPSO and RIPSO require a label translation layer
50  * to convert the label on the packet into something meaningful on the host
51  * machine.  In the current Linux implementation these mapping tables live
52  * inside the kernel; NetLabel provides a mechanism for user space applications
53  * to manage these mapping tables.
54  *
55  * NetLabel makes use of the Generic NETLINK mechanism as a transport layer to
56  * send messages between kernel and user space.  The general format of a
57  * NetLabel message is shown below:
58  *
59  *  +-----------------+-------------------+--------- --- -- -
60  *  | struct nlmsghdr | struct genlmsghdr | payload
61  *  +-----------------+-------------------+--------- --- -- -
62  *
63  * The 'nlmsghdr' and 'genlmsghdr' structs should be dealt with like normal.
64  * The payload is dependent on the subsystem specified in the
65  * 'nlmsghdr->nlmsg_type' and should be defined below, supporting functions
66  * should be defined in the corresponding net/netlabel/netlabel_<subsys>.h|c
67  * file.  All of the fields in the NetLabel payload are NETLINK attributes, see
68  * the include/net/netlink.h file for more information on NETLINK attributes.
69  *
70  */
71 
72 /*
73  * NetLabel NETLINK protocol
74  */
75 
76 /* NetLabel NETLINK protocol version
77  *  1: initial version
78  *  2: added static labels for unlabeled connections
79  *  3: network selectors added to the NetLabel/LSM domain mapping and the
80  *     CIPSO_V4_MAP_LOCAL CIPSO mapping was added
81  */
82 #define NETLBL_PROTO_VERSION            3
83 
84 /* NetLabel NETLINK types/families */
85 #define NETLBL_NLTYPE_NONE              0
86 #define NETLBL_NLTYPE_MGMT              1
87 #define NETLBL_NLTYPE_MGMT_NAME         "NLBL_MGMT"
88 #define NETLBL_NLTYPE_RIPSO             2
89 #define NETLBL_NLTYPE_RIPSO_NAME        "NLBL_RIPSO"
90 #define NETLBL_NLTYPE_CIPSOV4           3
91 #define NETLBL_NLTYPE_CIPSOV4_NAME      "NLBL_CIPSOv4"
92 #define NETLBL_NLTYPE_CIPSOV6           4
93 #define NETLBL_NLTYPE_CIPSOV6_NAME      "NLBL_CIPSOv6"
94 #define NETLBL_NLTYPE_UNLABELED         5
95 #define NETLBL_NLTYPE_UNLABELED_NAME    "NLBL_UNLBL"
96 #define NETLBL_NLTYPE_ADDRSELECT        6
97 #define NETLBL_NLTYPE_ADDRSELECT_NAME   "NLBL_ADRSEL"
98 #define NETLBL_NLTYPE_CALIPSO           7
99 #define NETLBL_NLTYPE_CALIPSO_NAME      "NLBL_CALIPSO"
100 
101 /*
102  * NetLabel - Kernel API for accessing the network packet label mappings.
103  *
104  * The following functions are provided for use by other kernel modules,
105  * specifically kernel LSM modules, to provide a consistent, transparent API
106  * for dealing with explicit packet labeling protocols such as CIPSO and
107  * RIPSO.  The functions defined here are implemented in the
108  * net/netlabel/netlabel_kapi.c file.
109  *
110  */
111 
112 /* NetLabel audit information */
113 struct netlbl_audit {
114 	u32 secid;
115 	kuid_t loginuid;
116 	unsigned int sessionid;
117 };
118 
119 /*
120  * LSM security attributes
121  */
122 
123 /**
124  * struct netlbl_lsm_cache - NetLabel LSM security attribute cache
125  * @refcount: atomic reference counter
126  * @free: LSM supplied function to free the cache data
127  * @data: LSM supplied cache data
128  *
129  * Description:
130  * This structure is provided for LSMs which wish to make use of the NetLabel
131  * caching mechanism to store LSM specific data/attributes in the NetLabel
132  * cache.  If the LSM has to perform a lot of translation from the NetLabel
133  * security attributes into it's own internal representation then the cache
134  * mechanism can provide a way to eliminate some or all of that translation
135  * overhead on a cache hit.
136  *
137  */
138 struct netlbl_lsm_cache {
139 	refcount_t refcount;
140 	void (*free) (const void *data);
141 	void *data;
142 };
143 
144 /**
145  * struct netlbl_lsm_catmap - NetLabel LSM secattr category bitmap
146  * @startbit: the value of the lowest order bit in the bitmap
147  * @bitmap: the category bitmap
148  * @next: pointer to the next bitmap "node" or NULL
149  *
150  * Description:
151  * This structure is used to represent category bitmaps.  Due to the large
152  * number of categories supported by most labeling protocols it is not
153  * practical to transfer a full bitmap internally so NetLabel adopts a sparse
154  * bitmap structure modeled after SELinux's ebitmap structure.
155  * The catmap bitmap field MUST be a power of two in length and large
156  * enough to hold at least 240 bits.  Special care (i.e. check the code!)
157  * should be used when changing these values as the LSM implementation
158  * probably has functions which rely on the sizes of these types to speed
159  * processing.
160  *
161  */
162 #define NETLBL_CATMAP_MAPTYPE           u64
163 #define NETLBL_CATMAP_MAPCNT            4
164 #define NETLBL_CATMAP_MAPSIZE           (sizeof(NETLBL_CATMAP_MAPTYPE) * 8)
165 #define NETLBL_CATMAP_SIZE              (NETLBL_CATMAP_MAPSIZE * \
166 					 NETLBL_CATMAP_MAPCNT)
167 #define NETLBL_CATMAP_BIT               (NETLBL_CATMAP_MAPTYPE)0x01
168 struct netlbl_lsm_catmap {
169 	u32 startbit;
170 	NETLBL_CATMAP_MAPTYPE bitmap[NETLBL_CATMAP_MAPCNT];
171 	struct netlbl_lsm_catmap *next;
172 };
173 
174 /**
175  * struct netlbl_lsm_secattr - NetLabel LSM security attributes
176  * @flags: indicate structure attributes, see NETLBL_SECATTR_*
177  * @type: indicate the NLTYPE of the attributes
178  * @domain: the NetLabel LSM domain
179  * @cache: NetLabel LSM specific cache
180  * @attr.mls: MLS sensitivity label
181  * @attr.mls.cat: MLS category bitmap
182  * @attr.mls.lvl: MLS sensitivity level
183  * @attr.secid: LSM specific secid token
184  *
185  * Description:
186  * This structure is used to pass security attributes between NetLabel and the
187  * LSM modules.  The flags field is used to specify which fields within the
188  * struct are valid and valid values can be created by bitwise OR'ing the
189  * NETLBL_SECATTR_* defines.  The domain field is typically set by the LSM to
190  * specify domain specific configuration settings and is not usually used by
191  * NetLabel itself when returning security attributes to the LSM.
192  *
193  */
194 struct netlbl_lsm_secattr {
195 	u32 flags;
196 	/* bitmap values for 'flags' */
197 #define NETLBL_SECATTR_NONE             0x00000000
198 #define NETLBL_SECATTR_DOMAIN           0x00000001
199 #define NETLBL_SECATTR_DOMAIN_CPY       (NETLBL_SECATTR_DOMAIN | \
200 					 NETLBL_SECATTR_FREE_DOMAIN)
201 #define NETLBL_SECATTR_CACHE            0x00000002
202 #define NETLBL_SECATTR_MLS_LVL          0x00000004
203 #define NETLBL_SECATTR_MLS_CAT          0x00000008
204 #define NETLBL_SECATTR_SECID            0x00000010
205 	/* bitmap meta-values for 'flags' */
206 #define NETLBL_SECATTR_FREE_DOMAIN      0x01000000
207 #define NETLBL_SECATTR_CACHEABLE        (NETLBL_SECATTR_MLS_LVL | \
208 					 NETLBL_SECATTR_MLS_CAT | \
209 					 NETLBL_SECATTR_SECID)
210 	u32 type;
211 	char *domain;
212 	struct netlbl_lsm_cache *cache;
213 	struct {
214 		struct {
215 			struct netlbl_lsm_catmap *cat;
216 			u32 lvl;
217 		} mls;
218 		u32 secid;
219 	} attr;
220 };
221 
222 /**
223  * struct netlbl_calipso_ops - NetLabel CALIPSO operations
224  * @doi_add: add a CALIPSO DOI
225  * @doi_free: free a CALIPSO DOI
226  * @doi_getdef: returns a reference to a DOI
227  * @doi_putdef: releases a reference of a DOI
228  * @doi_walk: enumerate the DOI list
229  * @sock_getattr: retrieve the socket's attr
230  * @sock_setattr: set the socket's attr
231  * @sock_delattr: remove the socket's attr
232  * @req_setattr: set the req socket's attr
233  * @req_delattr: remove the req socket's attr
234  * @opt_getattr: retrieve attr from memory block
235  * @skbuff_optptr: find option in packet
236  * @skbuff_setattr: set the skbuff's attr
237  * @skbuff_delattr: remove the skbuff's attr
238  * @cache_invalidate: invalidate cache
239  * @cache_add: add cache entry
240  *
241  * Description:
242  * This structure is filled out by the CALIPSO engine and passed
243  * to the NetLabel core via a call to netlbl_calipso_ops_register().
244  * It enables the CALIPSO engine (and hence IPv6) to be compiled
245  * as a module.
246  */
247 struct netlbl_calipso_ops {
248 	int (*doi_add)(struct calipso_doi *doi_def,
249 		       struct netlbl_audit *audit_info);
250 	void (*doi_free)(struct calipso_doi *doi_def);
251 	int (*doi_remove)(u32 doi, struct netlbl_audit *audit_info);
252 	struct calipso_doi *(*doi_getdef)(u32 doi);
253 	void (*doi_putdef)(struct calipso_doi *doi_def);
254 	int (*doi_walk)(u32 *skip_cnt,
255 			int (*callback)(struct calipso_doi *doi_def, void *arg),
256 			void *cb_arg);
257 	int (*sock_getattr)(struct sock *sk,
258 			    struct netlbl_lsm_secattr *secattr);
259 	int (*sock_setattr)(struct sock *sk,
260 			    const struct calipso_doi *doi_def,
261 			    const struct netlbl_lsm_secattr *secattr);
262 	void (*sock_delattr)(struct sock *sk);
263 	int (*req_setattr)(struct request_sock *req,
264 			   const struct calipso_doi *doi_def,
265 			   const struct netlbl_lsm_secattr *secattr);
266 	void (*req_delattr)(struct request_sock *req);
267 	int (*opt_getattr)(const unsigned char *calipso,
268 			   struct netlbl_lsm_secattr *secattr);
269 	unsigned char *(*skbuff_optptr)(const struct sk_buff *skb);
270 	int (*skbuff_setattr)(struct sk_buff *skb,
271 			      const struct calipso_doi *doi_def,
272 			      const struct netlbl_lsm_secattr *secattr);
273 	int (*skbuff_delattr)(struct sk_buff *skb);
274 	void (*cache_invalidate)(void);
275 	int (*cache_add)(const unsigned char *calipso_ptr,
276 			 const struct netlbl_lsm_secattr *secattr);
277 };
278 
279 /*
280  * LSM security attribute operations (inline)
281  */
282 
283 /**
284  * netlbl_secattr_cache_alloc - Allocate and initialize a secattr cache
285  * @flags: the memory allocation flags
286  *
287  * Description:
288  * Allocate and initialize a netlbl_lsm_cache structure.  Returns a pointer
289  * on success, NULL on failure.
290  *
291  */
netlbl_secattr_cache_alloc(gfp_t flags)292 static inline struct netlbl_lsm_cache *netlbl_secattr_cache_alloc(gfp_t flags)
293 {
294 	struct netlbl_lsm_cache *cache;
295 
296 	cache = kzalloc(sizeof(*cache), flags);
297 	if (cache)
298 		refcount_set(&cache->refcount, 1);
299 	return cache;
300 }
301 
302 /**
303  * netlbl_secattr_cache_free - Frees a netlbl_lsm_cache struct
304  * @cache: the struct to free
305  *
306  * Description:
307  * Frees @secattr including all of the internal buffers.
308  *
309  */
netlbl_secattr_cache_free(struct netlbl_lsm_cache * cache)310 static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache)
311 {
312 	if (!refcount_dec_and_test(&cache->refcount))
313 		return;
314 
315 	if (cache->free)
316 		cache->free(cache->data);
317 	kfree(cache);
318 }
319 
320 /**
321  * netlbl_catmap_alloc - Allocate a LSM secattr catmap
322  * @flags: memory allocation flags
323  *
324  * Description:
325  * Allocate memory for a LSM secattr catmap, returns a pointer on success, NULL
326  * on failure.
327  *
328  */
netlbl_catmap_alloc(gfp_t flags)329 static inline struct netlbl_lsm_catmap *netlbl_catmap_alloc(gfp_t flags)
330 {
331 	return kzalloc(sizeof(struct netlbl_lsm_catmap), flags);
332 }
333 
334 /**
335  * netlbl_catmap_free - Free a LSM secattr catmap
336  * @catmap: the category bitmap
337  *
338  * Description:
339  * Free a LSM secattr catmap.
340  *
341  */
netlbl_catmap_free(struct netlbl_lsm_catmap * catmap)342 static inline void netlbl_catmap_free(struct netlbl_lsm_catmap *catmap)
343 {
344 	struct netlbl_lsm_catmap *iter;
345 
346 	while (catmap) {
347 		iter = catmap;
348 		catmap = catmap->next;
349 		kfree(iter);
350 	}
351 }
352 
353 /**
354  * netlbl_secattr_init - Initialize a netlbl_lsm_secattr struct
355  * @secattr: the struct to initialize
356  *
357  * Description:
358  * Initialize an already allocated netlbl_lsm_secattr struct.
359  *
360  */
netlbl_secattr_init(struct netlbl_lsm_secattr * secattr)361 static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr)
362 {
363 	memset(secattr, 0, sizeof(*secattr));
364 }
365 
366 /**
367  * netlbl_secattr_destroy - Clears a netlbl_lsm_secattr struct
368  * @secattr: the struct to clear
369  *
370  * Description:
371  * Destroys the @secattr struct, including freeing all of the internal buffers.
372  * The struct must be reset with a call to netlbl_secattr_init() before reuse.
373  *
374  */
netlbl_secattr_destroy(struct netlbl_lsm_secattr * secattr)375 static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr)
376 {
377 	if (secattr->flags & NETLBL_SECATTR_FREE_DOMAIN)
378 		kfree(secattr->domain);
379 	if (secattr->flags & NETLBL_SECATTR_CACHE)
380 		netlbl_secattr_cache_free(secattr->cache);
381 	if (secattr->flags & NETLBL_SECATTR_MLS_CAT)
382 		netlbl_catmap_free(secattr->attr.mls.cat);
383 }
384 
385 /**
386  * netlbl_secattr_alloc - Allocate and initialize a netlbl_lsm_secattr struct
387  * @flags: the memory allocation flags
388  *
389  * Description:
390  * Allocate and initialize a netlbl_lsm_secattr struct.  Returns a valid
391  * pointer on success, or NULL on failure.
392  *
393  */
netlbl_secattr_alloc(gfp_t flags)394 static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(gfp_t flags)
395 {
396 	return kzalloc(sizeof(struct netlbl_lsm_secattr), flags);
397 }
398 
399 /**
400  * netlbl_secattr_free - Frees a netlbl_lsm_secattr struct
401  * @secattr: the struct to free
402  *
403  * Description:
404  * Frees @secattr including all of the internal buffers.
405  *
406  */
netlbl_secattr_free(struct netlbl_lsm_secattr * secattr)407 static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr)
408 {
409 	netlbl_secattr_destroy(secattr);
410 	kfree(secattr);
411 }
412 
413 #ifdef CONFIG_NETLABEL
414 /*
415  * LSM configuration operations
416  */
417 int netlbl_cfg_map_del(const char *domain,
418 		       u16 family,
419 		       const void *addr,
420 		       const void *mask,
421 		       struct netlbl_audit *audit_info);
422 int netlbl_cfg_unlbl_map_add(const char *domain,
423 			     u16 family,
424 			     const void *addr,
425 			     const void *mask,
426 			     struct netlbl_audit *audit_info);
427 int netlbl_cfg_unlbl_static_add(struct net *net,
428 				const char *dev_name,
429 				const void *addr,
430 				const void *mask,
431 				u16 family,
432 				u32 secid,
433 				struct netlbl_audit *audit_info);
434 int netlbl_cfg_unlbl_static_del(struct net *net,
435 				const char *dev_name,
436 				const void *addr,
437 				const void *mask,
438 				u16 family,
439 				struct netlbl_audit *audit_info);
440 int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
441 			   struct netlbl_audit *audit_info);
442 void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info);
443 int netlbl_cfg_cipsov4_map_add(u32 doi,
444 			       const char *domain,
445 			       const struct in_addr *addr,
446 			       const struct in_addr *mask,
447 			       struct netlbl_audit *audit_info);
448 int netlbl_cfg_calipso_add(struct calipso_doi *doi_def,
449 			   struct netlbl_audit *audit_info);
450 void netlbl_cfg_calipso_del(u32 doi, struct netlbl_audit *audit_info);
451 int netlbl_cfg_calipso_map_add(u32 doi,
452 			       const char *domain,
453 			       const struct in6_addr *addr,
454 			       const struct in6_addr *mask,
455 			       struct netlbl_audit *audit_info);
456 /*
457  * LSM security attribute operations
458  */
459 int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset);
460 int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset);
461 int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap,
462 			  u32 *offset,
463 			  unsigned long *bitmap);
464 int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap,
465 			 u32 bit,
466 			 gfp_t flags);
467 int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap,
468 			 u32 start,
469 			 u32 end,
470 			 gfp_t flags);
471 int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
472 			  u32 offset,
473 			  unsigned long bitmap,
474 			  gfp_t flags);
475 
476 /* Bitmap functions
477  */
478 int netlbl_bitmap_walk(const unsigned char *bitmap, u32 bitmap_len,
479 		       u32 offset, u8 state);
480 void netlbl_bitmap_setbit(unsigned char *bitmap, u32 bit, u8 state);
481 
482 /*
483  * LSM protocol operations (NetLabel LSM/kernel API)
484  */
485 int netlbl_enabled(void);
486 int netlbl_sock_setattr(struct sock *sk,
487 			u16 family,
488 			const struct netlbl_lsm_secattr *secattr);
489 void netlbl_sock_delattr(struct sock *sk);
490 int netlbl_sock_getattr(struct sock *sk,
491 			struct netlbl_lsm_secattr *secattr);
492 int netlbl_conn_setattr(struct sock *sk,
493 			struct sockaddr *addr,
494 			const struct netlbl_lsm_secattr *secattr);
495 int netlbl_req_setattr(struct request_sock *req,
496 		       const struct netlbl_lsm_secattr *secattr);
497 void netlbl_req_delattr(struct request_sock *req);
498 int netlbl_skbuff_setattr(struct sk_buff *skb,
499 			  u16 family,
500 			  const struct netlbl_lsm_secattr *secattr);
501 int netlbl_skbuff_getattr(const struct sk_buff *skb,
502 			  u16 family,
503 			  struct netlbl_lsm_secattr *secattr);
504 void netlbl_skbuff_err(struct sk_buff *skb, u16 family, int error, int gateway);
505 
506 /*
507  * LSM label mapping cache operations
508  */
509 void netlbl_cache_invalidate(void);
510 int netlbl_cache_add(const struct sk_buff *skb, u16 family,
511 		     const struct netlbl_lsm_secattr *secattr);
512 
513 /*
514  * Protocol engine operations
515  */
516 struct audit_buffer *netlbl_audit_start(int type,
517 					struct netlbl_audit *audit_info);
518 #else
netlbl_cfg_map_del(const char * domain,u16 family,const void * addr,const void * mask,struct netlbl_audit * audit_info)519 static inline int netlbl_cfg_map_del(const char *domain,
520 				     u16 family,
521 				     const void *addr,
522 				     const void *mask,
523 				     struct netlbl_audit *audit_info)
524 {
525 	return -ENOSYS;
526 }
netlbl_cfg_unlbl_map_add(const char * domain,u16 family,void * addr,void * mask,struct netlbl_audit * audit_info)527 static inline int netlbl_cfg_unlbl_map_add(const char *domain,
528 					   u16 family,
529 					   void *addr,
530 					   void *mask,
531 					   struct netlbl_audit *audit_info)
532 {
533 	return -ENOSYS;
534 }
netlbl_cfg_unlbl_static_add(struct net * net,const char * dev_name,const void * addr,const void * mask,u16 family,u32 secid,struct netlbl_audit * audit_info)535 static inline int netlbl_cfg_unlbl_static_add(struct net *net,
536 					      const char *dev_name,
537 					      const void *addr,
538 					      const void *mask,
539 					      u16 family,
540 					      u32 secid,
541 					      struct netlbl_audit *audit_info)
542 {
543 	return -ENOSYS;
544 }
netlbl_cfg_unlbl_static_del(struct net * net,const char * dev_name,const void * addr,const void * mask,u16 family,struct netlbl_audit * audit_info)545 static inline int netlbl_cfg_unlbl_static_del(struct net *net,
546 					      const char *dev_name,
547 					      const void *addr,
548 					      const void *mask,
549 					      u16 family,
550 					      struct netlbl_audit *audit_info)
551 {
552 	return -ENOSYS;
553 }
netlbl_cfg_cipsov4_add(struct cipso_v4_doi * doi_def,struct netlbl_audit * audit_info)554 static inline int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
555 					 struct netlbl_audit *audit_info)
556 {
557 	return -ENOSYS;
558 }
netlbl_cfg_cipsov4_del(u32 doi,struct netlbl_audit * audit_info)559 static inline void netlbl_cfg_cipsov4_del(u32 doi,
560 					  struct netlbl_audit *audit_info)
561 {
562 	return;
563 }
netlbl_cfg_cipsov4_map_add(u32 doi,const char * domain,const struct in_addr * addr,const struct in_addr * mask,struct netlbl_audit * audit_info)564 static inline int netlbl_cfg_cipsov4_map_add(u32 doi,
565 					     const char *domain,
566 					     const struct in_addr *addr,
567 					     const struct in_addr *mask,
568 					     struct netlbl_audit *audit_info)
569 {
570 	return -ENOSYS;
571 }
netlbl_cfg_calipso_add(struct calipso_doi * doi_def,struct netlbl_audit * audit_info)572 static inline int netlbl_cfg_calipso_add(struct calipso_doi *doi_def,
573 					 struct netlbl_audit *audit_info)
574 {
575 	return -ENOSYS;
576 }
netlbl_cfg_calipso_del(u32 doi,struct netlbl_audit * audit_info)577 static inline void netlbl_cfg_calipso_del(u32 doi,
578 					  struct netlbl_audit *audit_info)
579 {
580 	return;
581 }
netlbl_cfg_calipso_map_add(u32 doi,const char * domain,const struct in6_addr * addr,const struct in6_addr * mask,struct netlbl_audit * audit_info)582 static inline int netlbl_cfg_calipso_map_add(u32 doi,
583 					     const char *domain,
584 					     const struct in6_addr *addr,
585 					     const struct in6_addr *mask,
586 					     struct netlbl_audit *audit_info)
587 {
588 	return -ENOSYS;
589 }
netlbl_catmap_walk(struct netlbl_lsm_catmap * catmap,u32 offset)590 static inline int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap,
591 				     u32 offset)
592 {
593 	return -ENOENT;
594 }
netlbl_catmap_walkrng(struct netlbl_lsm_catmap * catmap,u32 offset)595 static inline int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap,
596 					u32 offset)
597 {
598 	return -ENOENT;
599 }
netlbl_catmap_getlong(struct netlbl_lsm_catmap * catmap,u32 * offset,unsigned long * bitmap)600 static inline int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap,
601 					u32 *offset,
602 					unsigned long *bitmap)
603 {
604 	return 0;
605 }
netlbl_catmap_setbit(struct netlbl_lsm_catmap ** catmap,u32 bit,gfp_t flags)606 static inline int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap,
607 				       u32 bit,
608 				       gfp_t flags)
609 {
610 	return 0;
611 }
netlbl_catmap_setrng(struct netlbl_lsm_catmap ** catmap,u32 start,u32 end,gfp_t flags)612 static inline int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap,
613 				       u32 start,
614 				       u32 end,
615 				       gfp_t flags)
616 {
617 	return 0;
618 }
netlbl_catmap_setlong(struct netlbl_lsm_catmap ** catmap,u32 offset,unsigned long bitmap,gfp_t flags)619 static inline int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
620 					u32 offset,
621 					unsigned long bitmap,
622 					gfp_t flags)
623 {
624 	return 0;
625 }
netlbl_enabled(void)626 static inline int netlbl_enabled(void)
627 {
628 	return 0;
629 }
netlbl_sock_setattr(struct sock * sk,u16 family,const struct netlbl_lsm_secattr * secattr)630 static inline int netlbl_sock_setattr(struct sock *sk,
631 				      u16 family,
632 				      const struct netlbl_lsm_secattr *secattr)
633 {
634 	return -ENOSYS;
635 }
netlbl_sock_delattr(struct sock * sk)636 static inline void netlbl_sock_delattr(struct sock *sk)
637 {
638 }
netlbl_sock_getattr(struct sock * sk,struct netlbl_lsm_secattr * secattr)639 static inline int netlbl_sock_getattr(struct sock *sk,
640 				      struct netlbl_lsm_secattr *secattr)
641 {
642 	return -ENOSYS;
643 }
netlbl_conn_setattr(struct sock * sk,struct sockaddr * addr,const struct netlbl_lsm_secattr * secattr)644 static inline int netlbl_conn_setattr(struct sock *sk,
645 				      struct sockaddr *addr,
646 				      const struct netlbl_lsm_secattr *secattr)
647 {
648 	return -ENOSYS;
649 }
netlbl_req_setattr(struct request_sock * req,const struct netlbl_lsm_secattr * secattr)650 static inline int netlbl_req_setattr(struct request_sock *req,
651 				     const struct netlbl_lsm_secattr *secattr)
652 {
653 	return -ENOSYS;
654 }
netlbl_req_delattr(struct request_sock * req)655 static inline void netlbl_req_delattr(struct request_sock *req)
656 {
657 	return;
658 }
netlbl_skbuff_setattr(struct sk_buff * skb,u16 family,const struct netlbl_lsm_secattr * secattr)659 static inline int netlbl_skbuff_setattr(struct sk_buff *skb,
660 				      u16 family,
661 				      const struct netlbl_lsm_secattr *secattr)
662 {
663 	return -ENOSYS;
664 }
netlbl_skbuff_getattr(const struct sk_buff * skb,u16 family,struct netlbl_lsm_secattr * secattr)665 static inline int netlbl_skbuff_getattr(const struct sk_buff *skb,
666 					u16 family,
667 					struct netlbl_lsm_secattr *secattr)
668 {
669 	return -ENOSYS;
670 }
netlbl_skbuff_err(struct sk_buff * skb,int error,int gateway)671 static inline void netlbl_skbuff_err(struct sk_buff *skb,
672 				     int error,
673 				     int gateway)
674 {
675 	return;
676 }
netlbl_cache_invalidate(void)677 static inline void netlbl_cache_invalidate(void)
678 {
679 	return;
680 }
netlbl_cache_add(const struct sk_buff * skb,u16 family,const struct netlbl_lsm_secattr * secattr)681 static inline int netlbl_cache_add(const struct sk_buff *skb, u16 family,
682 				   const struct netlbl_lsm_secattr *secattr)
683 {
684 	return 0;
685 }
netlbl_audit_start(int type,struct netlbl_audit * audit_info)686 static inline struct audit_buffer *netlbl_audit_start(int type,
687 						struct netlbl_audit *audit_info)
688 {
689 	return NULL;
690 }
691 #endif /* CONFIG_NETLABEL */
692 
693 const struct netlbl_calipso_ops *
694 netlbl_calipso_ops_register(const struct netlbl_calipso_ops *ops);
695 
696 #endif /* _NETLABEL_H */
697