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30#ifndef _NETLABEL_H
31#define _NETLABEL_H
32
33#include <linux/types.h>
34#include <linux/slab.h>
35#include <linux/net.h>
36#include <linux/skbuff.h>
37#include <linux/in.h>
38#include <linux/in6.h>
39#include <net/netlink.h>
40#include <net/request_sock.h>
41#include <linux/atomic.h>
42
43struct cipso_v4_doi;
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82#define NETLBL_PROTO_VERSION 3
83
84
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"
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110
111struct netlbl_audit {
112 u32 secid;
113 kuid_t loginuid;
114 u32 sessionid;
115};
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136struct netlbl_lsm_cache {
137 atomic_t refcount;
138 void (*free) (const void *data);
139 void *data;
140};
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160#define NETLBL_CATMAP_MAPTYPE u64
161#define NETLBL_CATMAP_MAPCNT 4
162#define NETLBL_CATMAP_MAPSIZE (sizeof(NETLBL_CATMAP_MAPTYPE) * 8)
163#define NETLBL_CATMAP_SIZE (NETLBL_CATMAP_MAPSIZE * \
164 NETLBL_CATMAP_MAPCNT)
165#define NETLBL_CATMAP_BIT (NETLBL_CATMAP_MAPTYPE)0x01
166struct netlbl_lsm_secattr_catmap {
167 u32 startbit;
168 NETLBL_CATMAP_MAPTYPE bitmap[NETLBL_CATMAP_MAPCNT];
169 struct netlbl_lsm_secattr_catmap *next;
170};
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192struct netlbl_lsm_secattr {
193 u32 flags;
194
195#define NETLBL_SECATTR_NONE 0x00000000
196#define NETLBL_SECATTR_DOMAIN 0x00000001
197#define NETLBL_SECATTR_DOMAIN_CPY (NETLBL_SECATTR_DOMAIN | \
198 NETLBL_SECATTR_FREE_DOMAIN)
199#define NETLBL_SECATTR_CACHE 0x00000002
200#define NETLBL_SECATTR_MLS_LVL 0x00000004
201#define NETLBL_SECATTR_MLS_CAT 0x00000008
202#define NETLBL_SECATTR_SECID 0x00000010
203
204#define NETLBL_SECATTR_FREE_DOMAIN 0x01000000
205#define NETLBL_SECATTR_CACHEABLE (NETLBL_SECATTR_MLS_LVL | \
206 NETLBL_SECATTR_MLS_CAT | \
207 NETLBL_SECATTR_SECID)
208 u32 type;
209 char *domain;
210 struct netlbl_lsm_cache *cache;
211 struct {
212 struct {
213 struct netlbl_lsm_secattr_catmap *cat;
214 u32 lvl;
215 } mls;
216 u32 secid;
217 } attr;
218};
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233static inline struct netlbl_lsm_cache *netlbl_secattr_cache_alloc(gfp_t flags)
234{
235 struct netlbl_lsm_cache *cache;
236
237 cache = kzalloc(sizeof(*cache), flags);
238 if (cache)
239 atomic_set(&cache->refcount, 1);
240 return cache;
241}
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251static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache)
252{
253 if (!atomic_dec_and_test(&cache->refcount))
254 return;
255
256 if (cache->free)
257 cache->free(cache->data);
258 kfree(cache);
259}
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270static inline struct netlbl_lsm_secattr_catmap *netlbl_secattr_catmap_alloc(
271 gfp_t flags)
272{
273 return kzalloc(sizeof(struct netlbl_lsm_secattr_catmap), flags);
274}
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284static inline void netlbl_secattr_catmap_free(
285 struct netlbl_lsm_secattr_catmap *catmap)
286{
287 struct netlbl_lsm_secattr_catmap *iter;
288
289 do {
290 iter = catmap;
291 catmap = catmap->next;
292 kfree(iter);
293 } while (catmap);
294}
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304static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr)
305{
306 memset(secattr, 0, sizeof(*secattr));
307}
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318static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr)
319{
320 if (secattr->flags & NETLBL_SECATTR_FREE_DOMAIN)
321 kfree(secattr->domain);
322 if (secattr->flags & NETLBL_SECATTR_CACHE)
323 netlbl_secattr_cache_free(secattr->cache);
324 if (secattr->flags & NETLBL_SECATTR_MLS_CAT)
325 netlbl_secattr_catmap_free(secattr->attr.mls.cat);
326}
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337static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(gfp_t flags)
338{
339 return kzalloc(sizeof(struct netlbl_lsm_secattr), flags);
340}
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350static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr)
351{
352 netlbl_secattr_destroy(secattr);
353 kfree(secattr);
354}
355
356#ifdef CONFIG_NETLABEL
357
358
359
360int netlbl_cfg_map_del(const char *domain,
361 u16 family,
362 const void *addr,
363 const void *mask,
364 struct netlbl_audit *audit_info);
365int netlbl_cfg_unlbl_map_add(const char *domain,
366 u16 family,
367 const void *addr,
368 const void *mask,
369 struct netlbl_audit *audit_info);
370int netlbl_cfg_unlbl_static_add(struct net *net,
371 const char *dev_name,
372 const void *addr,
373 const void *mask,
374 u16 family,
375 u32 secid,
376 struct netlbl_audit *audit_info);
377int netlbl_cfg_unlbl_static_del(struct net *net,
378 const char *dev_name,
379 const void *addr,
380 const void *mask,
381 u16 family,
382 struct netlbl_audit *audit_info);
383int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
384 struct netlbl_audit *audit_info);
385void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info);
386int netlbl_cfg_cipsov4_map_add(u32 doi,
387 const char *domain,
388 const struct in_addr *addr,
389 const struct in_addr *mask,
390 struct netlbl_audit *audit_info);
391
392
393
394int netlbl_secattr_catmap_walk(struct netlbl_lsm_secattr_catmap *catmap,
395 u32 offset);
396int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap,
397 u32 offset);
398int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap,
399 u32 bit,
400 gfp_t flags);
401int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap,
402 u32 start,
403 u32 end,
404 gfp_t flags);
405
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409int netlbl_enabled(void);
410int netlbl_sock_setattr(struct sock *sk,
411 u16 family,
412 const struct netlbl_lsm_secattr *secattr);
413void netlbl_sock_delattr(struct sock *sk);
414int netlbl_sock_getattr(struct sock *sk,
415 struct netlbl_lsm_secattr *secattr);
416int netlbl_conn_setattr(struct sock *sk,
417 struct sockaddr *addr,
418 const struct netlbl_lsm_secattr *secattr);
419int netlbl_req_setattr(struct request_sock *req,
420 const struct netlbl_lsm_secattr *secattr);
421void netlbl_req_delattr(struct request_sock *req);
422int netlbl_skbuff_setattr(struct sk_buff *skb,
423 u16 family,
424 const struct netlbl_lsm_secattr *secattr);
425int netlbl_skbuff_getattr(const struct sk_buff *skb,
426 u16 family,
427 struct netlbl_lsm_secattr *secattr);
428void netlbl_skbuff_err(struct sk_buff *skb, int error, int gateway);
429
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433void netlbl_cache_invalidate(void);
434int netlbl_cache_add(const struct sk_buff *skb,
435 const struct netlbl_lsm_secattr *secattr);
436
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439
440struct audit_buffer *netlbl_audit_start(int type,
441 struct netlbl_audit *audit_info);
442#else
443static inline int netlbl_cfg_map_del(const char *domain,
444 u16 family,
445 const void *addr,
446 const void *mask,
447 struct netlbl_audit *audit_info)
448{
449 return -ENOSYS;
450}
451static inline int netlbl_cfg_unlbl_map_add(const char *domain,
452 u16 family,
453 void *addr,
454 void *mask,
455 struct netlbl_audit *audit_info)
456{
457 return -ENOSYS;
458}
459static inline int netlbl_cfg_unlbl_static_add(struct net *net,
460 const char *dev_name,
461 const void *addr,
462 const void *mask,
463 u16 family,
464 u32 secid,
465 struct netlbl_audit *audit_info)
466{
467 return -ENOSYS;
468}
469static inline int netlbl_cfg_unlbl_static_del(struct net *net,
470 const char *dev_name,
471 const void *addr,
472 const void *mask,
473 u16 family,
474 struct netlbl_audit *audit_info)
475{
476 return -ENOSYS;
477}
478static inline int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
479 struct netlbl_audit *audit_info)
480{
481 return -ENOSYS;
482}
483static inline void netlbl_cfg_cipsov4_del(u32 doi,
484 struct netlbl_audit *audit_info)
485{
486 return;
487}
488static inline int netlbl_cfg_cipsov4_map_add(u32 doi,
489 const char *domain,
490 const struct in_addr *addr,
491 const struct in_addr *mask,
492 struct netlbl_audit *audit_info)
493{
494 return -ENOSYS;
495}
496static inline int netlbl_secattr_catmap_walk(
497 struct netlbl_lsm_secattr_catmap *catmap,
498 u32 offset)
499{
500 return -ENOENT;
501}
502static inline int netlbl_secattr_catmap_walk_rng(
503 struct netlbl_lsm_secattr_catmap *catmap,
504 u32 offset)
505{
506 return -ENOENT;
507}
508static inline int netlbl_secattr_catmap_setbit(
509 struct netlbl_lsm_secattr_catmap *catmap,
510 u32 bit,
511 gfp_t flags)
512{
513 return 0;
514}
515static inline int netlbl_secattr_catmap_setrng(
516 struct netlbl_lsm_secattr_catmap *catmap,
517 u32 start,
518 u32 end,
519 gfp_t flags)
520{
521 return 0;
522}
523static inline int netlbl_enabled(void)
524{
525 return 0;
526}
527static inline int netlbl_sock_setattr(struct sock *sk,
528 u16 family,
529 const struct netlbl_lsm_secattr *secattr)
530{
531 return -ENOSYS;
532}
533static inline void netlbl_sock_delattr(struct sock *sk)
534{
535}
536static inline int netlbl_sock_getattr(struct sock *sk,
537 struct netlbl_lsm_secattr *secattr)
538{
539 return -ENOSYS;
540}
541static inline int netlbl_conn_setattr(struct sock *sk,
542 struct sockaddr *addr,
543 const struct netlbl_lsm_secattr *secattr)
544{
545 return -ENOSYS;
546}
547static inline int netlbl_req_setattr(struct request_sock *req,
548 const struct netlbl_lsm_secattr *secattr)
549{
550 return -ENOSYS;
551}
552static inline void netlbl_req_delattr(struct request_sock *req)
553{
554 return;
555}
556static inline int netlbl_skbuff_setattr(struct sk_buff *skb,
557 u16 family,
558 const struct netlbl_lsm_secattr *secattr)
559{
560 return -ENOSYS;
561}
562static inline int netlbl_skbuff_getattr(const struct sk_buff *skb,
563 u16 family,
564 struct netlbl_lsm_secattr *secattr)
565{
566 return -ENOSYS;
567}
568static inline void netlbl_skbuff_err(struct sk_buff *skb,
569 int error,
570 int gateway)
571{
572 return;
573}
574static inline void netlbl_cache_invalidate(void)
575{
576 return;
577}
578static inline int netlbl_cache_add(const struct sk_buff *skb,
579 const struct netlbl_lsm_secattr *secattr)
580{
581 return 0;
582}
583static inline struct audit_buffer *netlbl_audit_start(int type,
584 struct netlbl_audit *audit_info)
585{
586 return NULL;
587}
588#endif
589
590#endif
591