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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/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 kuid_t loginuid;
113 unsigned int 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_catmap {
166 u32 startbit;
167 NETLBL_CATMAP_MAPTYPE bitmap[NETLBL_CATMAP_MAPCNT];
168 struct netlbl_lsm_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_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_catmap *netlbl_catmap_alloc(gfp_t flags)
270{
271 return kzalloc(sizeof(struct netlbl_lsm_catmap), flags);
272}
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282static inline void netlbl_catmap_free(struct netlbl_lsm_catmap *catmap)
283{
284 struct netlbl_lsm_catmap *iter;
285
286 while (catmap) {
287 iter = catmap;
288 catmap = catmap->next;
289 kfree(iter);
290 }
291}
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301static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr)
302{
303 memset(secattr, 0, sizeof(*secattr));
304}
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315static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr)
316{
317 if (secattr->flags & NETLBL_SECATTR_FREE_DOMAIN)
318 kfree(secattr->domain);
319 if (secattr->flags & NETLBL_SECATTR_CACHE)
320 netlbl_secattr_cache_free(secattr->cache);
321 if (secattr->flags & NETLBL_SECATTR_MLS_CAT)
322 netlbl_catmap_free(secattr->attr.mls.cat);
323}
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334static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(gfp_t flags)
335{
336 return kzalloc(sizeof(struct netlbl_lsm_secattr), flags);
337}
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347static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr)
348{
349 netlbl_secattr_destroy(secattr);
350 kfree(secattr);
351}
352
353#ifdef CONFIG_NETLABEL
354
355
356
357int netlbl_cfg_map_del(const char *domain,
358 u16 family,
359 const void *addr,
360 const void *mask,
361 struct netlbl_audit *audit_info);
362int netlbl_cfg_unlbl_map_add(const char *domain,
363 u16 family,
364 const void *addr,
365 const void *mask,
366 struct netlbl_audit *audit_info);
367int netlbl_cfg_unlbl_static_add(struct net *net,
368 const char *dev_name,
369 const void *addr,
370 const void *mask,
371 u16 family,
372 u32 secid,
373 struct netlbl_audit *audit_info);
374int netlbl_cfg_unlbl_static_del(struct net *net,
375 const char *dev_name,
376 const void *addr,
377 const void *mask,
378 u16 family,
379 struct netlbl_audit *audit_info);
380int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
381 struct netlbl_audit *audit_info);
382void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info);
383int netlbl_cfg_cipsov4_map_add(u32 doi,
384 const char *domain,
385 const struct in_addr *addr,
386 const struct in_addr *mask,
387 struct netlbl_audit *audit_info);
388
389
390
391int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset);
392int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset);
393int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap,
394 u32 *offset,
395 unsigned long *bitmap);
396int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap,
397 u32 bit,
398 gfp_t flags);
399int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap,
400 u32 start,
401 u32 end,
402 gfp_t flags);
403int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
404 u32 offset,
405 unsigned long bitmap,
406 gfp_t flags);
407
408
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410
411int netlbl_enabled(void);
412int netlbl_sock_setattr(struct sock *sk,
413 u16 family,
414 const struct netlbl_lsm_secattr *secattr);
415void netlbl_sock_delattr(struct sock *sk);
416int netlbl_sock_getattr(struct sock *sk,
417 struct netlbl_lsm_secattr *secattr);
418int netlbl_conn_setattr(struct sock *sk,
419 struct sockaddr *addr,
420 const struct netlbl_lsm_secattr *secattr);
421int netlbl_req_setattr(struct request_sock *req,
422 const struct netlbl_lsm_secattr *secattr);
423void netlbl_req_delattr(struct request_sock *req);
424int netlbl_skbuff_setattr(struct sk_buff *skb,
425 u16 family,
426 const struct netlbl_lsm_secattr *secattr);
427int netlbl_skbuff_getattr(const struct sk_buff *skb,
428 u16 family,
429 struct netlbl_lsm_secattr *secattr);
430void netlbl_skbuff_err(struct sk_buff *skb, int error, int gateway);
431
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435void netlbl_cache_invalidate(void);
436int netlbl_cache_add(const struct sk_buff *skb,
437 const struct netlbl_lsm_secattr *secattr);
438
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442struct audit_buffer *netlbl_audit_start(int type,
443 struct netlbl_audit *audit_info);
444#else
445static inline int netlbl_cfg_map_del(const char *domain,
446 u16 family,
447 const void *addr,
448 const void *mask,
449 struct netlbl_audit *audit_info)
450{
451 return -ENOSYS;
452}
453static inline int netlbl_cfg_unlbl_map_add(const char *domain,
454 u16 family,
455 void *addr,
456 void *mask,
457 struct netlbl_audit *audit_info)
458{
459 return -ENOSYS;
460}
461static inline int netlbl_cfg_unlbl_static_add(struct net *net,
462 const char *dev_name,
463 const void *addr,
464 const void *mask,
465 u16 family,
466 u32 secid,
467 struct netlbl_audit *audit_info)
468{
469 return -ENOSYS;
470}
471static inline int netlbl_cfg_unlbl_static_del(struct net *net,
472 const char *dev_name,
473 const void *addr,
474 const void *mask,
475 u16 family,
476 struct netlbl_audit *audit_info)
477{
478 return -ENOSYS;
479}
480static inline int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
481 struct netlbl_audit *audit_info)
482{
483 return -ENOSYS;
484}
485static inline void netlbl_cfg_cipsov4_del(u32 doi,
486 struct netlbl_audit *audit_info)
487{
488 return;
489}
490static inline int netlbl_cfg_cipsov4_map_add(u32 doi,
491 const char *domain,
492 const struct in_addr *addr,
493 const struct in_addr *mask,
494 struct netlbl_audit *audit_info)
495{
496 return -ENOSYS;
497}
498static inline int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap,
499 u32 offset)
500{
501 return -ENOENT;
502}
503static inline int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap,
504 u32 offset)
505{
506 return -ENOENT;
507}
508static inline int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap,
509 u32 *offset,
510 unsigned long *bitmap)
511{
512 return 0;
513}
514static inline int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap,
515 u32 bit,
516 gfp_t flags)
517{
518 return 0;
519}
520static inline int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap,
521 u32 start,
522 u32 end,
523 gfp_t flags)
524{
525 return 0;
526}
527static inline int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
528 u32 offset,
529 unsigned long bitmap,
530 gfp_t flags)
531{
532 return 0;
533}
534static inline int netlbl_enabled(void)
535{
536 return 0;
537}
538static inline int netlbl_sock_setattr(struct sock *sk,
539 u16 family,
540 const struct netlbl_lsm_secattr *secattr)
541{
542 return -ENOSYS;
543}
544static inline void netlbl_sock_delattr(struct sock *sk)
545{
546}
547static inline int netlbl_sock_getattr(struct sock *sk,
548 struct netlbl_lsm_secattr *secattr)
549{
550 return -ENOSYS;
551}
552static inline int netlbl_conn_setattr(struct sock *sk,
553 struct sockaddr *addr,
554 const struct netlbl_lsm_secattr *secattr)
555{
556 return -ENOSYS;
557}
558static inline int netlbl_req_setattr(struct request_sock *req,
559 const struct netlbl_lsm_secattr *secattr)
560{
561 return -ENOSYS;
562}
563static inline void netlbl_req_delattr(struct request_sock *req)
564{
565 return;
566}
567static inline int netlbl_skbuff_setattr(struct sk_buff *skb,
568 u16 family,
569 const struct netlbl_lsm_secattr *secattr)
570{
571 return -ENOSYS;
572}
573static inline int netlbl_skbuff_getattr(const struct sk_buff *skb,
574 u16 family,
575 struct netlbl_lsm_secattr *secattr)
576{
577 return -ENOSYS;
578}
579static inline void netlbl_skbuff_err(struct sk_buff *skb,
580 int error,
581 int gateway)
582{
583 return;
584}
585static inline void netlbl_cache_invalidate(void)
586{
587 return;
588}
589static inline int netlbl_cache_add(const struct sk_buff *skb,
590 const struct netlbl_lsm_secattr *secattr)
591{
592 return 0;
593}
594static inline struct audit_buffer *netlbl_audit_start(int type,
595 struct netlbl_audit *audit_info)
596{
597 return NULL;
598}
599#endif
600
601#endif
602