1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
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;
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
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"
98
99
100
101
102
103
104
105
106
107
108
109
110
111struct netlbl_audit {
112 u32 secid;
113 kuid_t loginuid;
114 unsigned int sessionid;
115};
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136struct netlbl_lsm_cache {
137 atomic_t refcount;
138 void (*free) (const void *data);
139 void *data;
140};
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
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_catmap {
167 u32 startbit;
168 NETLBL_CATMAP_MAPTYPE bitmap[NETLBL_CATMAP_MAPCNT];
169 struct netlbl_lsm_catmap *next;
170};
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
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_catmap *cat;
214 u32 lvl;
215 } mls;
216 u32 secid;
217 } attr;
218};
219
220
221
222
223
224
225
226
227
228
229
230
231
232
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}
242
243
244
245
246
247
248
249
250
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}
260
261
262
263
264
265
266
267
268
269
270static inline struct netlbl_lsm_catmap *netlbl_catmap_alloc(gfp_t flags)
271{
272 return kzalloc(sizeof(struct netlbl_lsm_catmap), flags);
273}
274
275
276
277
278
279
280
281
282
283static inline void netlbl_catmap_free(struct netlbl_lsm_catmap *catmap)
284{
285 struct netlbl_lsm_catmap *iter;
286
287 while (catmap) {
288 iter = catmap;
289 catmap = catmap->next;
290 kfree(iter);
291 }
292}
293
294
295
296
297
298
299
300
301
302static inline void netlbl_secattr_init(struct netlbl_lsm_secattr *secattr)
303{
304 memset(secattr, 0, sizeof(*secattr));
305}
306
307
308
309
310
311
312
313
314
315
316static inline void netlbl_secattr_destroy(struct netlbl_lsm_secattr *secattr)
317{
318 if (secattr->flags & NETLBL_SECATTR_FREE_DOMAIN)
319 kfree(secattr->domain);
320 if (secattr->flags & NETLBL_SECATTR_CACHE)
321 netlbl_secattr_cache_free(secattr->cache);
322 if (secattr->flags & NETLBL_SECATTR_MLS_CAT)
323 netlbl_catmap_free(secattr->attr.mls.cat);
324}
325
326
327
328
329
330
331
332
333
334
335static inline struct netlbl_lsm_secattr *netlbl_secattr_alloc(gfp_t flags)
336{
337 return kzalloc(sizeof(struct netlbl_lsm_secattr), flags);
338}
339
340
341
342
343
344
345
346
347
348static inline void netlbl_secattr_free(struct netlbl_lsm_secattr *secattr)
349{
350 netlbl_secattr_destroy(secattr);
351 kfree(secattr);
352}
353
354#ifdef CONFIG_NETLABEL
355
356
357
358int netlbl_cfg_map_del(const char *domain,
359 u16 family,
360 const void *addr,
361 const void *mask,
362 struct netlbl_audit *audit_info);
363int netlbl_cfg_unlbl_map_add(const char *domain,
364 u16 family,
365 const void *addr,
366 const void *mask,
367 struct netlbl_audit *audit_info);
368int netlbl_cfg_unlbl_static_add(struct net *net,
369 const char *dev_name,
370 const void *addr,
371 const void *mask,
372 u16 family,
373 u32 secid,
374 struct netlbl_audit *audit_info);
375int netlbl_cfg_unlbl_static_del(struct net *net,
376 const char *dev_name,
377 const void *addr,
378 const void *mask,
379 u16 family,
380 struct netlbl_audit *audit_info);
381int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
382 struct netlbl_audit *audit_info);
383void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info);
384int netlbl_cfg_cipsov4_map_add(u32 doi,
385 const char *domain,
386 const struct in_addr *addr,
387 const struct in_addr *mask,
388 struct netlbl_audit *audit_info);
389
390
391
392int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset);
393int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset);
394int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap,
395 u32 *offset,
396 unsigned long *bitmap);
397int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap,
398 u32 bit,
399 gfp_t flags);
400int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap,
401 u32 start,
402 u32 end,
403 gfp_t flags);
404int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
405 u32 offset,
406 unsigned long bitmap,
407 gfp_t flags);
408
409
410
411
412int netlbl_enabled(void);
413int netlbl_sock_setattr(struct sock *sk,
414 u16 family,
415 const struct netlbl_lsm_secattr *secattr);
416void netlbl_sock_delattr(struct sock *sk);
417int netlbl_sock_getattr(struct sock *sk,
418 struct netlbl_lsm_secattr *secattr);
419int netlbl_conn_setattr(struct sock *sk,
420 struct sockaddr *addr,
421 const struct netlbl_lsm_secattr *secattr);
422int netlbl_req_setattr(struct request_sock *req,
423 const struct netlbl_lsm_secattr *secattr);
424void netlbl_req_delattr(struct request_sock *req);
425int netlbl_skbuff_setattr(struct sk_buff *skb,
426 u16 family,
427 const struct netlbl_lsm_secattr *secattr);
428int netlbl_skbuff_getattr(const struct sk_buff *skb,
429 u16 family,
430 struct netlbl_lsm_secattr *secattr);
431void netlbl_skbuff_err(struct sk_buff *skb, int error, int gateway);
432
433
434
435
436void netlbl_cache_invalidate(void);
437int netlbl_cache_add(const struct sk_buff *skb,
438 const struct netlbl_lsm_secattr *secattr);
439
440
441
442
443struct audit_buffer *netlbl_audit_start(int type,
444 struct netlbl_audit *audit_info);
445#else
446static inline int netlbl_cfg_map_del(const char *domain,
447 u16 family,
448 const void *addr,
449 const void *mask,
450 struct netlbl_audit *audit_info)
451{
452 return -ENOSYS;
453}
454static inline int netlbl_cfg_unlbl_map_add(const char *domain,
455 u16 family,
456 void *addr,
457 void *mask,
458 struct netlbl_audit *audit_info)
459{
460 return -ENOSYS;
461}
462static inline int netlbl_cfg_unlbl_static_add(struct net *net,
463 const char *dev_name,
464 const void *addr,
465 const void *mask,
466 u16 family,
467 u32 secid,
468 struct netlbl_audit *audit_info)
469{
470 return -ENOSYS;
471}
472static inline int netlbl_cfg_unlbl_static_del(struct net *net,
473 const char *dev_name,
474 const void *addr,
475 const void *mask,
476 u16 family,
477 struct netlbl_audit *audit_info)
478{
479 return -ENOSYS;
480}
481static inline int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
482 struct netlbl_audit *audit_info)
483{
484 return -ENOSYS;
485}
486static inline void netlbl_cfg_cipsov4_del(u32 doi,
487 struct netlbl_audit *audit_info)
488{
489 return;
490}
491static inline int netlbl_cfg_cipsov4_map_add(u32 doi,
492 const char *domain,
493 const struct in_addr *addr,
494 const struct in_addr *mask,
495 struct netlbl_audit *audit_info)
496{
497 return -ENOSYS;
498}
499static inline int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap,
500 u32 offset)
501{
502 return -ENOENT;
503}
504static inline int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap,
505 u32 offset)
506{
507 return -ENOENT;
508}
509static inline int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap,
510 u32 *offset,
511 unsigned long *bitmap)
512{
513 return 0;
514}
515static inline int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap,
516 u32 bit,
517 gfp_t flags)
518{
519 return 0;
520}
521static inline int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap,
522 u32 start,
523 u32 end,
524 gfp_t flags)
525{
526 return 0;
527}
528static int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
529 u32 offset,
530 unsigned long bitmap,
531 gfp_t flags)
532{
533 return 0;
534}
535static inline int netlbl_enabled(void)
536{
537 return 0;
538}
539static inline int netlbl_sock_setattr(struct sock *sk,
540 u16 family,
541 const struct netlbl_lsm_secattr *secattr)
542{
543 return -ENOSYS;
544}
545static inline void netlbl_sock_delattr(struct sock *sk)
546{
547}
548static inline int netlbl_sock_getattr(struct sock *sk,
549 struct netlbl_lsm_secattr *secattr)
550{
551 return -ENOSYS;
552}
553static inline int netlbl_conn_setattr(struct sock *sk,
554 struct sockaddr *addr,
555 const struct netlbl_lsm_secattr *secattr)
556{
557 return -ENOSYS;
558}
559static inline int netlbl_req_setattr(struct request_sock *req,
560 const struct netlbl_lsm_secattr *secattr)
561{
562 return -ENOSYS;
563}
564static inline void netlbl_req_delattr(struct request_sock *req)
565{
566 return;
567}
568static inline int netlbl_skbuff_setattr(struct sk_buff *skb,
569 u16 family,
570 const struct netlbl_lsm_secattr *secattr)
571{
572 return -ENOSYS;
573}
574static inline int netlbl_skbuff_getattr(const struct sk_buff *skb,
575 u16 family,
576 struct netlbl_lsm_secattr *secattr)
577{
578 return -ENOSYS;
579}
580static inline void netlbl_skbuff_err(struct sk_buff *skb,
581 int error,
582 int gateway)
583{
584 return;
585}
586static inline void netlbl_cache_invalidate(void)
587{
588 return;
589}
590static inline int netlbl_cache_add(const struct sk_buff *skb,
591 const struct netlbl_lsm_secattr *secattr)
592{
593 return 0;
594}
595static inline struct audit_buffer *netlbl_audit_start(int type,
596 struct netlbl_audit *audit_info)
597{
598 return NULL;
599}
600#endif
601
602#endif
603