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30#ifndef _NETLABEL_H
31#define _NETLABEL_H
32
33#include <linux/types.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 <asm/atomic.h>
41
42struct cipso_v4_doi;
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80
81#define NETLBL_PROTO_VERSION 3
82
83
84#define NETLBL_NLTYPE_NONE 0
85#define NETLBL_NLTYPE_MGMT 1
86#define NETLBL_NLTYPE_MGMT_NAME "NLBL_MGMT"
87#define NETLBL_NLTYPE_RIPSO 2
88#define NETLBL_NLTYPE_RIPSO_NAME "NLBL_RIPSO"
89#define NETLBL_NLTYPE_CIPSOV4 3
90#define NETLBL_NLTYPE_CIPSOV4_NAME "NLBL_CIPSOv4"
91#define NETLBL_NLTYPE_CIPSOV6 4
92#define NETLBL_NLTYPE_CIPSOV6_NAME "NLBL_CIPSOv6"
93#define NETLBL_NLTYPE_UNLABELED 5
94#define NETLBL_NLTYPE_UNLABELED_NAME "NLBL_UNLBL"
95#define NETLBL_NLTYPE_ADDRSELECT 6
96#define NETLBL_NLTYPE_ADDRSELECT_NAME "NLBL_ADRSEL"
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109
110struct netlbl_audit {
111 u32 secid;
112 uid_t loginuid;
113 u32 sessionid;
114};
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135struct netlbl_lsm_cache {
136 atomic_t refcount;
137 void (*free) (const void *data);
138 void *data;
139};
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159#define NETLBL_CATMAP_MAPTYPE u64
160#define NETLBL_CATMAP_MAPCNT 4
161#define NETLBL_CATMAP_MAPSIZE (sizeof(NETLBL_CATMAP_MAPTYPE) * 8)
162#define NETLBL_CATMAP_SIZE (NETLBL_CATMAP_MAPSIZE * \
163 NETLBL_CATMAP_MAPCNT)
164#define NETLBL_CATMAP_BIT (NETLBL_CATMAP_MAPTYPE)0x01
165struct netlbl_lsm_secattr_catmap {
166 u32 startbit;
167 NETLBL_CATMAP_MAPTYPE bitmap[NETLBL_CATMAP_MAPCNT];
168 struct netlbl_lsm_secattr_catmap *next;
169};
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191struct netlbl_lsm_secattr {
192 u32 flags;
193
194#define NETLBL_SECATTR_NONE 0x00000000
195#define NETLBL_SECATTR_DOMAIN 0x00000001
196#define NETLBL_SECATTR_DOMAIN_CPY (NETLBL_SECATTR_DOMAIN | \
197 NETLBL_SECATTR_FREE_DOMAIN)
198#define NETLBL_SECATTR_CACHE 0x00000002
199#define NETLBL_SECATTR_MLS_LVL 0x00000004
200#define NETLBL_SECATTR_MLS_CAT 0x00000008
201#define NETLBL_SECATTR_SECID 0x00000010
202
203#define NETLBL_SECATTR_FREE_DOMAIN 0x01000000
204#define NETLBL_SECATTR_CACHEABLE (NETLBL_SECATTR_MLS_LVL | \
205 NETLBL_SECATTR_MLS_CAT | \
206 NETLBL_SECATTR_SECID)
207 u32 type;
208 char *domain;
209 struct netlbl_lsm_cache *cache;
210 struct {
211 struct {
212 struct netlbl_lsm_secattr_catmap *cat;
213 u32 lvl;
214 } mls;
215 u32 secid;
216 } attr;
217};
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232static inline struct netlbl_lsm_cache *netlbl_secattr_cache_alloc(gfp_t flags)
233{
234 struct netlbl_lsm_cache *cache;
235
236 cache = kzalloc(sizeof(*cache), flags);
237 if (cache)
238 atomic_set(&cache->refcount, 1);
239 return cache;
240}
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250static inline void netlbl_secattr_cache_free(struct netlbl_lsm_cache *cache)
251{
252 if (!atomic_dec_and_test(&cache->refcount))
253 return;
254
255 if (cache->free)
256 cache->free(cache->data);
257 kfree(cache);
258}
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269static inline struct netlbl_lsm_secattr_catmap *netlbl_secattr_catmap_alloc(
270 gfp_t flags)
271{
272 return kzalloc(sizeof(struct netlbl_lsm_secattr_catmap), flags);
273}
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283static inline void netlbl_secattr_catmap_free(
284 struct netlbl_lsm_secattr_catmap *catmap)
285{
286 struct netlbl_lsm_secattr_catmap *iter;
287
288 do {
289 iter = catmap;
290 catmap = catmap->next;
291 kfree(iter);
292 } while (catmap);
293}
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303static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr)
304{
305 memset(secattr, 0, sizeof(*secattr));
306}
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317static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr)
318{
319 if (secattr->flags & NETLBL_SECATTR_FREE_DOMAIN)
320 kfree(secattr->domain);
321 if (secattr->flags & NETLBL_SECATTR_CACHE)
322 netlbl_secattr_cache_free(secattr->cache);
323 if (secattr->flags & NETLBL_SECATTR_MLS_CAT)
324 netlbl_secattr_catmap_free(secattr->attr.mls.cat);
325}
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336static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(gfp_t flags)
337{
338 return kzalloc(sizeof(struct netlbl_lsm_secattr), flags);
339}
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349static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr)
350{
351 netlbl_secattr_destroy(secattr);
352 kfree(secattr);
353}
354
355#ifdef CONFIG_NETLABEL
356
357
358
359int netlbl_cfg_map_del(const char *domain,
360 u16 family,
361 const void *addr,
362 const void *mask,
363 struct netlbl_audit *audit_info);
364int netlbl_cfg_unlbl_map_add(const char *domain,
365 u16 family,
366 const void *addr,
367 const void *mask,
368 struct netlbl_audit *audit_info);
369int netlbl_cfg_unlbl_static_add(struct net *net,
370 const char *dev_name,
371 const void *addr,
372 const void *mask,
373 u16 family,
374 u32 secid,
375 struct netlbl_audit *audit_info);
376int netlbl_cfg_unlbl_static_del(struct net *net,
377 const char *dev_name,
378 const void *addr,
379 const void *mask,
380 u16 family,
381 struct netlbl_audit *audit_info);
382int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
383 struct netlbl_audit *audit_info);
384void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info);
385int netlbl_cfg_cipsov4_map_add(u32 doi,
386 const char *domain,
387 const struct in_addr *addr,
388 const struct in_addr *mask,
389 struct netlbl_audit *audit_info);
390
391
392
393int netlbl_secattr_catmap_walk(struct netlbl_lsm_secattr_catmap *catmap,
394 u32 offset);
395int netlbl_secattr_catmap_walk_rng(struct netlbl_lsm_secattr_catmap *catmap,
396 u32 offset);
397int netlbl_secattr_catmap_setbit(struct netlbl_lsm_secattr_catmap *catmap,
398 u32 bit,
399 gfp_t flags);
400int netlbl_secattr_catmap_setrng(struct netlbl_lsm_secattr_catmap *catmap,
401 u32 start,
402 u32 end,
403 gfp_t flags);
404
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407
408int netlbl_enabled(void);
409int netlbl_sock_setattr(struct sock *sk,
410 u16 family,
411 const struct netlbl_lsm_secattr *secattr);
412void netlbl_sock_delattr(struct sock *sk);
413int netlbl_sock_getattr(struct sock *sk,
414 struct netlbl_lsm_secattr *secattr);
415int netlbl_conn_setattr(struct sock *sk,
416 struct sockaddr *addr,
417 const struct netlbl_lsm_secattr *secattr);
418int netlbl_req_setattr(struct request_sock *req,
419 const struct netlbl_lsm_secattr *secattr);
420void netlbl_req_delattr(struct request_sock *req);
421int netlbl_skbuff_setattr(struct sk_buff *skb,
422 u16 family,
423 const struct netlbl_lsm_secattr *secattr);
424int netlbl_skbuff_getattr(const struct sk_buff *skb,
425 u16 family,
426 struct netlbl_lsm_secattr *secattr);
427void netlbl_skbuff_err(struct sk_buff *skb, int error, int gateway);
428
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432void netlbl_cache_invalidate(void);
433int netlbl_cache_add(const struct sk_buff *skb,
434 const struct netlbl_lsm_secattr *secattr);
435
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439struct audit_buffer *netlbl_audit_start(int type,
440 struct netlbl_audit *audit_info);
441#else
442static inline int netlbl_cfg_map_del(const char *domain,
443 u16 family,
444 const void *addr,
445 const void *mask,
446 struct netlbl_audit *audit_info)
447{
448 return -ENOSYS;
449}
450static inline int netlbl_cfg_unlbl_map_add(const char *domain,
451 u16 family,
452 void *addr,
453 void *mask,
454 struct netlbl_audit *audit_info)
455{
456 return -ENOSYS;
457}
458static inline int netlbl_cfg_unlbl_static_add(struct net *net,
459 const char *dev_name,
460 const void *addr,
461 const void *mask,
462 u16 family,
463 u32 secid,
464 struct netlbl_audit *audit_info)
465{
466 return -ENOSYS;
467}
468static inline int netlbl_cfg_unlbl_static_del(struct net *net,
469 const char *dev_name,
470 const void *addr,
471 const void *mask,
472 u16 family,
473 struct netlbl_audit *audit_info)
474{
475 return -ENOSYS;
476}
477static inline int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
478 struct netlbl_audit *audit_info)
479{
480 return -ENOSYS;
481}
482static inline void netlbl_cfg_cipsov4_del(u32 doi,
483 struct netlbl_audit *audit_info)
484{
485 return;
486}
487static inline int netlbl_cfg_cipsov4_map_add(u32 doi,
488 const char *domain,
489 const struct in_addr *addr,
490 const struct in_addr *mask,
491 struct netlbl_audit *audit_info)
492{
493 return -ENOSYS;
494}
495static inline int netlbl_secattr_catmap_walk(
496 struct netlbl_lsm_secattr_catmap *catmap,
497 u32 offset)
498{
499 return -ENOENT;
500}
501static inline int netlbl_secattr_catmap_walk_rng(
502 struct netlbl_lsm_secattr_catmap *catmap,
503 u32 offset)
504{
505 return -ENOENT;
506}
507static inline int netlbl_secattr_catmap_setbit(
508 struct netlbl_lsm_secattr_catmap *catmap,
509 u32 bit,
510 gfp_t flags)
511{
512 return 0;
513}
514static inline int netlbl_secattr_catmap_setrng(
515 struct netlbl_lsm_secattr_catmap *catmap,
516 u32 start,
517 u32 end,
518 gfp_t flags)
519{
520 return 0;
521}
522static inline int netlbl_enabled(void)
523{
524 return 0;
525}
526static inline int netlbl_sock_setattr(struct sock *sk,
527 u16 family,
528 const struct netlbl_lsm_secattr *secattr)
529{
530 return -ENOSYS;
531}
532static inline void netlbl_sock_delattr(struct sock *sk)
533{
534}
535static inline int netlbl_sock_getattr(struct sock *sk,
536 struct netlbl_lsm_secattr *secattr)
537{
538 return -ENOSYS;
539}
540static inline int netlbl_conn_setattr(struct sock *sk,
541 struct sockaddr *addr,
542 const struct netlbl_lsm_secattr *secattr)
543{
544 return -ENOSYS;
545}
546static inline int netlbl_req_setattr(struct request_sock *req,
547 const struct netlbl_lsm_secattr *secattr)
548{
549 return -ENOSYS;
550}
551static inline void netlbl_req_delattr(struct request_sock *req)
552{
553 return;
554}
555static inline int netlbl_skbuff_setattr(struct sk_buff *skb,
556 u16 family,
557 const struct netlbl_lsm_secattr *secattr)
558{
559 return -ENOSYS;
560}
561static inline int netlbl_skbuff_getattr(const struct sk_buff *skb,
562 u16 family,
563 struct netlbl_lsm_secattr *secattr)
564{
565 return -ENOSYS;
566}
567static inline void netlbl_skbuff_err(struct sk_buff *skb,
568 int error,
569 int gateway)
570{
571 return;
572}
573static inline void netlbl_cache_invalidate(void)
574{
575 return;
576}
577static inline int netlbl_cache_add(const struct sk_buff *skb,
578 const struct netlbl_lsm_secattr *secattr)
579{
580 return 0;
581}
582static inline struct audit_buffer *netlbl_audit_start(int type,
583 struct netlbl_audit *audit_info)
584{
585 return NULL;
586}
587#endif
588
589#endif
590