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30#include <linux/init.h>
31#include <linux/types.h>
32#include <linux/slab.h>
33#include <linux/audit.h>
34#include <linux/in.h>
35#include <linux/in6.h>
36#include <net/ip.h>
37#include <net/ipv6.h>
38#include <net/netlabel.h>
39#include <net/cipso_ipv4.h>
40#include <net/calipso.h>
41#include <asm/bug.h>
42#include <linux/atomic.h>
43
44#include "netlabel_domainhash.h"
45#include "netlabel_unlabeled.h"
46#include "netlabel_cipso_v4.h"
47#include "netlabel_calipso.h"
48#include "netlabel_user.h"
49#include "netlabel_mgmt.h"
50#include "netlabel_addrlist.h"
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70int netlbl_cfg_map_del(const char *domain,
71 u16 family,
72 const void *addr,
73 const void *mask,
74 struct netlbl_audit *audit_info)
75{
76 if (addr == NULL && mask == NULL) {
77 return netlbl_domhsh_remove(domain, family, audit_info);
78 } else if (addr != NULL && mask != NULL) {
79 switch (family) {
80 case AF_INET:
81 return netlbl_domhsh_remove_af4(domain, addr, mask,
82 audit_info);
83#if IS_ENABLED(CONFIG_IPV6)
84 case AF_INET6:
85 return netlbl_domhsh_remove_af6(domain, addr, mask,
86 audit_info);
87#endif
88 default:
89 return -EPFNOSUPPORT;
90 }
91 } else
92 return -EINVAL;
93}
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109int netlbl_cfg_unlbl_map_add(const char *domain,
110 u16 family,
111 const void *addr,
112 const void *mask,
113 struct netlbl_audit *audit_info)
114{
115 int ret_val = -ENOMEM;
116 struct netlbl_dom_map *entry;
117 struct netlbl_domaddr_map *addrmap = NULL;
118 struct netlbl_domaddr4_map *map4 = NULL;
119 struct netlbl_domaddr6_map *map6 = NULL;
120
121 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
122 if (entry == NULL)
123 return -ENOMEM;
124 if (domain != NULL) {
125 entry->domain = kstrdup(domain, GFP_ATOMIC);
126 if (entry->domain == NULL)
127 goto cfg_unlbl_map_add_failure;
128 }
129 entry->family = family;
130
131 if (addr == NULL && mask == NULL)
132 entry->def.type = NETLBL_NLTYPE_UNLABELED;
133 else if (addr != NULL && mask != NULL) {
134 addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC);
135 if (addrmap == NULL)
136 goto cfg_unlbl_map_add_failure;
137 INIT_LIST_HEAD(&addrmap->list4);
138 INIT_LIST_HEAD(&addrmap->list6);
139
140 switch (family) {
141 case AF_INET: {
142 const struct in_addr *addr4 = addr;
143 const struct in_addr *mask4 = mask;
144 map4 = kzalloc(sizeof(*map4), GFP_ATOMIC);
145 if (map4 == NULL)
146 goto cfg_unlbl_map_add_failure;
147 map4->def.type = NETLBL_NLTYPE_UNLABELED;
148 map4->list.addr = addr4->s_addr & mask4->s_addr;
149 map4->list.mask = mask4->s_addr;
150 map4->list.valid = 1;
151 ret_val = netlbl_af4list_add(&map4->list,
152 &addrmap->list4);
153 if (ret_val != 0)
154 goto cfg_unlbl_map_add_failure;
155 break;
156 }
157#if IS_ENABLED(CONFIG_IPV6)
158 case AF_INET6: {
159 const struct in6_addr *addr6 = addr;
160 const struct in6_addr *mask6 = mask;
161 map6 = kzalloc(sizeof(*map6), GFP_ATOMIC);
162 if (map6 == NULL)
163 goto cfg_unlbl_map_add_failure;
164 map6->def.type = NETLBL_NLTYPE_UNLABELED;
165 map6->list.addr = *addr6;
166 map6->list.addr.s6_addr32[0] &= mask6->s6_addr32[0];
167 map6->list.addr.s6_addr32[1] &= mask6->s6_addr32[1];
168 map6->list.addr.s6_addr32[2] &= mask6->s6_addr32[2];
169 map6->list.addr.s6_addr32[3] &= mask6->s6_addr32[3];
170 map6->list.mask = *mask6;
171 map6->list.valid = 1;
172 ret_val = netlbl_af6list_add(&map6->list,
173 &addrmap->list6);
174 if (ret_val != 0)
175 goto cfg_unlbl_map_add_failure;
176 break;
177 }
178#endif
179 default:
180 goto cfg_unlbl_map_add_failure;
181 }
182
183 entry->def.addrsel = addrmap;
184 entry->def.type = NETLBL_NLTYPE_ADDRSELECT;
185 } else {
186 ret_val = -EINVAL;
187 goto cfg_unlbl_map_add_failure;
188 }
189
190 ret_val = netlbl_domhsh_add(entry, audit_info);
191 if (ret_val != 0)
192 goto cfg_unlbl_map_add_failure;
193
194 return 0;
195
196cfg_unlbl_map_add_failure:
197 kfree(entry->domain);
198 kfree(entry);
199 kfree(addrmap);
200 kfree(map4);
201 kfree(map6);
202 return ret_val;
203}
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222int netlbl_cfg_unlbl_static_add(struct net *net,
223 const char *dev_name,
224 const void *addr,
225 const void *mask,
226 u16 family,
227 u32 secid,
228 struct netlbl_audit *audit_info)
229{
230 u32 addr_len;
231
232 switch (family) {
233 case AF_INET:
234 addr_len = sizeof(struct in_addr);
235 break;
236#if IS_ENABLED(CONFIG_IPV6)
237 case AF_INET6:
238 addr_len = sizeof(struct in6_addr);
239 break;
240#endif
241 default:
242 return -EPFNOSUPPORT;
243 }
244
245 return netlbl_unlhsh_add(net,
246 dev_name, addr, mask, addr_len,
247 secid, audit_info);
248}
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265int netlbl_cfg_unlbl_static_del(struct net *net,
266 const char *dev_name,
267 const void *addr,
268 const void *mask,
269 u16 family,
270 struct netlbl_audit *audit_info)
271{
272 u32 addr_len;
273
274 switch (family) {
275 case AF_INET:
276 addr_len = sizeof(struct in_addr);
277 break;
278#if IS_ENABLED(CONFIG_IPV6)
279 case AF_INET6:
280 addr_len = sizeof(struct in6_addr);
281 break;
282#endif
283 default:
284 return -EPFNOSUPPORT;
285 }
286
287 return netlbl_unlhsh_remove(net,
288 dev_name, addr, mask, addr_len,
289 audit_info);
290}
291
292
293
294
295
296
297
298
299
300
301
302int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
303 struct netlbl_audit *audit_info)
304{
305 return cipso_v4_doi_add(doi_def, audit_info);
306}
307
308
309
310
311
312
313
314
315
316
317
318void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info)
319{
320 cipso_v4_doi_remove(doi, audit_info);
321}
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337int netlbl_cfg_cipsov4_map_add(u32 doi,
338 const char *domain,
339 const struct in_addr *addr,
340 const struct in_addr *mask,
341 struct netlbl_audit *audit_info)
342{
343 int ret_val = -ENOMEM;
344 struct cipso_v4_doi *doi_def;
345 struct netlbl_dom_map *entry;
346 struct netlbl_domaddr_map *addrmap = NULL;
347 struct netlbl_domaddr4_map *addrinfo = NULL;
348
349 doi_def = cipso_v4_doi_getdef(doi);
350 if (doi_def == NULL)
351 return -ENOENT;
352
353 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
354 if (entry == NULL)
355 goto out_entry;
356 entry->family = AF_INET;
357 if (domain != NULL) {
358 entry->domain = kstrdup(domain, GFP_ATOMIC);
359 if (entry->domain == NULL)
360 goto out_domain;
361 }
362
363 if (addr == NULL && mask == NULL) {
364 entry->def.cipso = doi_def;
365 entry->def.type = NETLBL_NLTYPE_CIPSOV4;
366 } else if (addr != NULL && mask != NULL) {
367 addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC);
368 if (addrmap == NULL)
369 goto out_addrmap;
370 INIT_LIST_HEAD(&addrmap->list4);
371 INIT_LIST_HEAD(&addrmap->list6);
372
373 addrinfo = kzalloc(sizeof(*addrinfo), GFP_ATOMIC);
374 if (addrinfo == NULL)
375 goto out_addrinfo;
376 addrinfo->def.cipso = doi_def;
377 addrinfo->def.type = NETLBL_NLTYPE_CIPSOV4;
378 addrinfo->list.addr = addr->s_addr & mask->s_addr;
379 addrinfo->list.mask = mask->s_addr;
380 addrinfo->list.valid = 1;
381 ret_val = netlbl_af4list_add(&addrinfo->list, &addrmap->list4);
382 if (ret_val != 0)
383 goto cfg_cipsov4_map_add_failure;
384
385 entry->def.addrsel = addrmap;
386 entry->def.type = NETLBL_NLTYPE_ADDRSELECT;
387 } else {
388 ret_val = -EINVAL;
389 goto out_addrmap;
390 }
391
392 ret_val = netlbl_domhsh_add(entry, audit_info);
393 if (ret_val != 0)
394 goto cfg_cipsov4_map_add_failure;
395
396 return 0;
397
398cfg_cipsov4_map_add_failure:
399 kfree(addrinfo);
400out_addrinfo:
401 kfree(addrmap);
402out_addrmap:
403 kfree(entry->domain);
404out_domain:
405 kfree(entry);
406out_entry:
407 cipso_v4_doi_putdef(doi_def);
408 return ret_val;
409}
410
411
412
413
414
415
416
417
418
419
420
421int netlbl_cfg_calipso_add(struct calipso_doi *doi_def,
422 struct netlbl_audit *audit_info)
423{
424#if IS_ENABLED(CONFIG_IPV6)
425 return calipso_doi_add(doi_def, audit_info);
426#else
427 return -ENOSYS;
428#endif
429}
430
431
432
433
434
435
436
437
438
439
440
441void netlbl_cfg_calipso_del(u32 doi, struct netlbl_audit *audit_info)
442{
443#if IS_ENABLED(CONFIG_IPV6)
444 calipso_doi_remove(doi, audit_info);
445#endif
446}
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462int netlbl_cfg_calipso_map_add(u32 doi,
463 const char *domain,
464 const struct in6_addr *addr,
465 const struct in6_addr *mask,
466 struct netlbl_audit *audit_info)
467{
468#if IS_ENABLED(CONFIG_IPV6)
469 int ret_val = -ENOMEM;
470 struct calipso_doi *doi_def;
471 struct netlbl_dom_map *entry;
472 struct netlbl_domaddr_map *addrmap = NULL;
473 struct netlbl_domaddr6_map *addrinfo = NULL;
474
475 doi_def = calipso_doi_getdef(doi);
476 if (doi_def == NULL)
477 return -ENOENT;
478
479 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
480 if (entry == NULL)
481 goto out_entry;
482 entry->family = AF_INET6;
483 if (domain != NULL) {
484 entry->domain = kstrdup(domain, GFP_ATOMIC);
485 if (entry->domain == NULL)
486 goto out_domain;
487 }
488
489 if (addr == NULL && mask == NULL) {
490 entry->def.calipso = doi_def;
491 entry->def.type = NETLBL_NLTYPE_CALIPSO;
492 } else if (addr != NULL && mask != NULL) {
493 addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC);
494 if (addrmap == NULL)
495 goto out_addrmap;
496 INIT_LIST_HEAD(&addrmap->list4);
497 INIT_LIST_HEAD(&addrmap->list6);
498
499 addrinfo = kzalloc(sizeof(*addrinfo), GFP_ATOMIC);
500 if (addrinfo == NULL)
501 goto out_addrinfo;
502 addrinfo->def.calipso = doi_def;
503 addrinfo->def.type = NETLBL_NLTYPE_CALIPSO;
504 addrinfo->list.addr = *addr;
505 addrinfo->list.addr.s6_addr32[0] &= mask->s6_addr32[0];
506 addrinfo->list.addr.s6_addr32[1] &= mask->s6_addr32[1];
507 addrinfo->list.addr.s6_addr32[2] &= mask->s6_addr32[2];
508 addrinfo->list.addr.s6_addr32[3] &= mask->s6_addr32[3];
509 addrinfo->list.mask = *mask;
510 addrinfo->list.valid = 1;
511 ret_val = netlbl_af6list_add(&addrinfo->list, &addrmap->list6);
512 if (ret_val != 0)
513 goto cfg_calipso_map_add_failure;
514
515 entry->def.addrsel = addrmap;
516 entry->def.type = NETLBL_NLTYPE_ADDRSELECT;
517 } else {
518 ret_val = -EINVAL;
519 goto out_addrmap;
520 }
521
522 ret_val = netlbl_domhsh_add(entry, audit_info);
523 if (ret_val != 0)
524 goto cfg_calipso_map_add_failure;
525
526 return 0;
527
528cfg_calipso_map_add_failure:
529 kfree(addrinfo);
530out_addrinfo:
531 kfree(addrmap);
532out_addrmap:
533 kfree(entry->domain);
534out_domain:
535 kfree(entry);
536out_entry:
537 calipso_doi_putdef(doi_def);
538 return ret_val;
539#else
540 return -ENOSYS;
541#endif
542}
543
544
545
546
547
548#define _CM_F_NONE 0x00000000
549#define _CM_F_ALLOC 0x00000001
550#define _CM_F_WALK 0x00000002
551
552
553
554
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566
567static struct netlbl_lsm_catmap *_netlbl_catmap_getnode(
568 struct netlbl_lsm_catmap **catmap,
569 u32 offset,
570 unsigned int cm_flags,
571 gfp_t gfp_flags)
572{
573 struct netlbl_lsm_catmap *iter = *catmap;
574 struct netlbl_lsm_catmap *prev = NULL;
575
576 if (iter == NULL)
577 goto catmap_getnode_alloc;
578 if (offset < iter->startbit)
579 goto catmap_getnode_walk;
580 while (iter && offset >= (iter->startbit + NETLBL_CATMAP_SIZE)) {
581 prev = iter;
582 iter = iter->next;
583 }
584 if (iter == NULL || offset < iter->startbit)
585 goto catmap_getnode_walk;
586
587 return iter;
588
589catmap_getnode_walk:
590 if (cm_flags & _CM_F_WALK)
591 return iter;
592catmap_getnode_alloc:
593 if (!(cm_flags & _CM_F_ALLOC))
594 return NULL;
595
596 iter = netlbl_catmap_alloc(gfp_flags);
597 if (iter == NULL)
598 return NULL;
599 iter->startbit = offset & ~(NETLBL_CATMAP_SIZE - 1);
600
601 if (prev == NULL) {
602 iter->next = *catmap;
603 *catmap = iter;
604 } else {
605 iter->next = prev->next;
606 prev->next = iter;
607 }
608
609 return iter;
610}
611
612
613
614
615
616
617
618
619
620
621
622int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset)
623{
624 struct netlbl_lsm_catmap *iter = catmap;
625 u32 idx;
626 u32 bit;
627 NETLBL_CATMAP_MAPTYPE bitmap;
628
629 iter = _netlbl_catmap_getnode(&catmap, offset, _CM_F_WALK, 0);
630 if (iter == NULL)
631 return -ENOENT;
632 if (offset > iter->startbit) {
633 offset -= iter->startbit;
634 idx = offset / NETLBL_CATMAP_MAPSIZE;
635 bit = offset % NETLBL_CATMAP_MAPSIZE;
636 } else {
637 idx = 0;
638 bit = 0;
639 }
640 bitmap = iter->bitmap[idx] >> bit;
641
642 for (;;) {
643 if (bitmap != 0) {
644 while ((bitmap & NETLBL_CATMAP_BIT) == 0) {
645 bitmap >>= 1;
646 bit++;
647 }
648 return iter->startbit +
649 (NETLBL_CATMAP_MAPSIZE * idx) + bit;
650 }
651 if (++idx >= NETLBL_CATMAP_MAPCNT) {
652 if (iter->next != NULL) {
653 iter = iter->next;
654 idx = 0;
655 } else
656 return -ENOENT;
657 }
658 bitmap = iter->bitmap[idx];
659 bit = 0;
660 }
661
662 return -ENOENT;
663}
664EXPORT_SYMBOL(netlbl_catmap_walk);
665
666
667
668
669
670
671
672
673
674
675
676
677int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset)
678{
679 struct netlbl_lsm_catmap *iter;
680 struct netlbl_lsm_catmap *prev = NULL;
681 u32 idx;
682 u32 bit;
683 NETLBL_CATMAP_MAPTYPE bitmask;
684 NETLBL_CATMAP_MAPTYPE bitmap;
685
686 iter = _netlbl_catmap_getnode(&catmap, offset, _CM_F_WALK, 0);
687 if (iter == NULL)
688 return -ENOENT;
689 if (offset > iter->startbit) {
690 offset -= iter->startbit;
691 idx = offset / NETLBL_CATMAP_MAPSIZE;
692 bit = offset % NETLBL_CATMAP_MAPSIZE;
693 } else {
694 idx = 0;
695 bit = 0;
696 }
697 bitmask = NETLBL_CATMAP_BIT << bit;
698
699 for (;;) {
700 bitmap = iter->bitmap[idx];
701 while (bitmask != 0 && (bitmap & bitmask) != 0) {
702 bitmask <<= 1;
703 bit++;
704 }
705
706 if (prev && idx == 0 && bit == 0)
707 return prev->startbit + NETLBL_CATMAP_SIZE - 1;
708 else if (bitmask != 0)
709 return iter->startbit +
710 (NETLBL_CATMAP_MAPSIZE * idx) + bit - 1;
711 else if (++idx >= NETLBL_CATMAP_MAPCNT) {
712 if (iter->next == NULL)
713 return iter->startbit + NETLBL_CATMAP_SIZE - 1;
714 prev = iter;
715 iter = iter->next;
716 idx = 0;
717 }
718 bitmask = NETLBL_CATMAP_BIT;
719 bit = 0;
720 }
721
722 return -ENOENT;
723}
724
725
726
727
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729
730
731
732
733
734
735
736
737
738
739int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap,
740 u32 *offset,
741 unsigned long *bitmap)
742{
743 struct netlbl_lsm_catmap *iter;
744 u32 off = *offset;
745 u32 idx;
746
747
748 if ((off & (BITS_PER_LONG - 1)) != 0)
749 return -EINVAL;
750
751 if (off < catmap->startbit) {
752 off = catmap->startbit;
753 *offset = off;
754 }
755 iter = _netlbl_catmap_getnode(&catmap, off, _CM_F_WALK, 0);
756 if (iter == NULL) {
757 *offset = (u32)-1;
758 return 0;
759 }
760
761 if (off < iter->startbit) {
762 *offset = iter->startbit;
763 off = 0;
764 } else
765 off -= iter->startbit;
766 idx = off / NETLBL_CATMAP_MAPSIZE;
767 *bitmap = iter->bitmap[idx] >> (off % NETLBL_CATMAP_MAPSIZE);
768
769 return 0;
770}
771
772
773
774
775
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781
782
783int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap,
784 u32 bit,
785 gfp_t flags)
786{
787 struct netlbl_lsm_catmap *iter;
788 u32 idx;
789
790 iter = _netlbl_catmap_getnode(catmap, bit, _CM_F_ALLOC, flags);
791 if (iter == NULL)
792 return -ENOMEM;
793
794 bit -= iter->startbit;
795 idx = bit / NETLBL_CATMAP_MAPSIZE;
796 iter->bitmap[idx] |= NETLBL_CATMAP_BIT << (bit % NETLBL_CATMAP_MAPSIZE);
797
798 return 0;
799}
800EXPORT_SYMBOL(netlbl_catmap_setbit);
801
802
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808
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810
811
812
813
814int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap,
815 u32 start,
816 u32 end,
817 gfp_t flags)
818{
819 int rc = 0;
820 u32 spot = start;
821
822 while (rc == 0 && spot <= end) {
823 if (((spot & (BITS_PER_LONG - 1)) == 0) &&
824 ((end - spot) > BITS_PER_LONG)) {
825 rc = netlbl_catmap_setlong(catmap,
826 spot,
827 (unsigned long)-1,
828 flags);
829 spot += BITS_PER_LONG;
830 } else
831 rc = netlbl_catmap_setbit(catmap, spot++, flags);
832 }
833
834 return rc;
835}
836
837
838
839
840
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843
844
845
846
847
848
849
850int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
851 u32 offset,
852 unsigned long bitmap,
853 gfp_t flags)
854{
855 struct netlbl_lsm_catmap *iter;
856 u32 idx;
857
858
859 if ((offset & (BITS_PER_LONG - 1)) != 0)
860 return -EINVAL;
861
862 iter = _netlbl_catmap_getnode(catmap, offset, _CM_F_ALLOC, flags);
863 if (iter == NULL)
864 return -ENOMEM;
865
866 offset -= iter->startbit;
867 idx = offset / NETLBL_CATMAP_MAPSIZE;
868 iter->bitmap[idx] |= bitmap << (offset % NETLBL_CATMAP_MAPSIZE);
869
870 return 0;
871}
872
873
874
875
876
877
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879
880
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882
883
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885
886
887
888int netlbl_bitmap_walk(const unsigned char *bitmap, u32 bitmap_len,
889 u32 offset, u8 state)
890{
891 u32 bit_spot;
892 u32 byte_offset;
893 unsigned char bitmask;
894 unsigned char byte;
895
896 byte_offset = offset / 8;
897 byte = bitmap[byte_offset];
898 bit_spot = offset;
899 bitmask = 0x80 >> (offset % 8);
900
901 while (bit_spot < bitmap_len) {
902 if ((state && (byte & bitmask) == bitmask) ||
903 (state == 0 && (byte & bitmask) == 0))
904 return bit_spot;
905
906 bit_spot++;
907 bitmask >>= 1;
908 if (bitmask == 0) {
909 byte = bitmap[++byte_offset];
910 bitmask = 0x80;
911 }
912 }
913
914 return -1;
915}
916EXPORT_SYMBOL(netlbl_bitmap_walk);
917
918
919
920
921
922
923
924
925
926
927
928void netlbl_bitmap_setbit(unsigned char *bitmap, u32 bit, u8 state)
929{
930 u32 byte_spot;
931 u8 bitmask;
932
933
934 byte_spot = bit / 8;
935 bitmask = 0x80 >> (bit % 8);
936 if (state)
937 bitmap[byte_spot] |= bitmask;
938 else
939 bitmap[byte_spot] &= ~bitmask;
940}
941EXPORT_SYMBOL(netlbl_bitmap_setbit);
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959int netlbl_enabled(void)
960{
961
962
963
964 return (atomic_read(&netlabel_mgmt_protocount) > 0);
965}
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982int netlbl_sock_setattr(struct sock *sk,
983 u16 family,
984 const struct netlbl_lsm_secattr *secattr)
985{
986 int ret_val;
987 struct netlbl_dom_map *dom_entry;
988
989 rcu_read_lock();
990 dom_entry = netlbl_domhsh_getentry(secattr->domain, family);
991 if (dom_entry == NULL) {
992 ret_val = -ENOENT;
993 goto socket_setattr_return;
994 }
995 switch (family) {
996 case AF_INET:
997 switch (dom_entry->def.type) {
998 case NETLBL_NLTYPE_ADDRSELECT:
999 ret_val = -EDESTADDRREQ;
1000 break;
1001 case NETLBL_NLTYPE_CIPSOV4:
1002 ret_val = cipso_v4_sock_setattr(sk,
1003 dom_entry->def.cipso,
1004 secattr);
1005 break;
1006 case NETLBL_NLTYPE_UNLABELED:
1007 ret_val = 0;
1008 break;
1009 default:
1010 ret_val = -ENOENT;
1011 }
1012 break;
1013#if IS_ENABLED(CONFIG_IPV6)
1014 case AF_INET6:
1015 switch (dom_entry->def.type) {
1016 case NETLBL_NLTYPE_ADDRSELECT:
1017 ret_val = -EDESTADDRREQ;
1018 break;
1019 case NETLBL_NLTYPE_CALIPSO:
1020 ret_val = calipso_sock_setattr(sk,
1021 dom_entry->def.calipso,
1022 secattr);
1023 break;
1024 case NETLBL_NLTYPE_UNLABELED:
1025 ret_val = 0;
1026 break;
1027 default:
1028 ret_val = -ENOENT;
1029 }
1030 break;
1031#endif
1032 default:
1033 ret_val = -EPROTONOSUPPORT;
1034 }
1035
1036socket_setattr_return:
1037 rcu_read_unlock();
1038 return ret_val;
1039}
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050void netlbl_sock_delattr(struct sock *sk)
1051{
1052 switch (sk->sk_family) {
1053 case AF_INET:
1054 cipso_v4_sock_delattr(sk);
1055 break;
1056#if IS_ENABLED(CONFIG_IPV6)
1057 case AF_INET6:
1058 calipso_sock_delattr(sk);
1059 break;
1060#endif
1061 }
1062}
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076int netlbl_sock_getattr(struct sock *sk,
1077 struct netlbl_lsm_secattr *secattr)
1078{
1079 int ret_val;
1080
1081 switch (sk->sk_family) {
1082 case AF_INET:
1083 ret_val = cipso_v4_sock_getattr(sk, secattr);
1084 break;
1085#if IS_ENABLED(CONFIG_IPV6)
1086 case AF_INET6:
1087 ret_val = calipso_sock_getattr(sk, secattr);
1088 break;
1089#endif
1090 default:
1091 ret_val = -EPROTONOSUPPORT;
1092 }
1093
1094 return ret_val;
1095}
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109int netlbl_conn_setattr(struct sock *sk,
1110 struct sockaddr *addr,
1111 const struct netlbl_lsm_secattr *secattr)
1112{
1113 int ret_val;
1114 struct sockaddr_in *addr4;
1115#if IS_ENABLED(CONFIG_IPV6)
1116 struct sockaddr_in6 *addr6;
1117#endif
1118 struct netlbl_dommap_def *entry;
1119
1120 rcu_read_lock();
1121 switch (addr->sa_family) {
1122 case AF_INET:
1123 addr4 = (struct sockaddr_in *)addr;
1124 entry = netlbl_domhsh_getentry_af4(secattr->domain,
1125 addr4->sin_addr.s_addr);
1126 if (entry == NULL) {
1127 ret_val = -ENOENT;
1128 goto conn_setattr_return;
1129 }
1130 switch (entry->type) {
1131 case NETLBL_NLTYPE_CIPSOV4:
1132 ret_val = cipso_v4_sock_setattr(sk,
1133 entry->cipso, secattr);
1134 break;
1135 case NETLBL_NLTYPE_UNLABELED:
1136
1137
1138 netlbl_sock_delattr(sk);
1139 ret_val = 0;
1140 break;
1141 default:
1142 ret_val = -ENOENT;
1143 }
1144 break;
1145#if IS_ENABLED(CONFIG_IPV6)
1146 case AF_INET6:
1147 addr6 = (struct sockaddr_in6 *)addr;
1148 entry = netlbl_domhsh_getentry_af6(secattr->domain,
1149 &addr6->sin6_addr);
1150 if (entry == NULL) {
1151 ret_val = -ENOENT;
1152 goto conn_setattr_return;
1153 }
1154 switch (entry->type) {
1155 case NETLBL_NLTYPE_CALIPSO:
1156 ret_val = calipso_sock_setattr(sk,
1157 entry->calipso, secattr);
1158 break;
1159 case NETLBL_NLTYPE_UNLABELED:
1160
1161
1162 netlbl_sock_delattr(sk);
1163 ret_val = 0;
1164 break;
1165 default:
1166 ret_val = -ENOENT;
1167 }
1168 break;
1169#endif
1170 default:
1171 ret_val = -EPROTONOSUPPORT;
1172 }
1173
1174conn_setattr_return:
1175 rcu_read_unlock();
1176 return ret_val;
1177}
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189int netlbl_req_setattr(struct request_sock *req,
1190 const struct netlbl_lsm_secattr *secattr)
1191{
1192 int ret_val;
1193 struct netlbl_dommap_def *entry;
1194 struct inet_request_sock *ireq = inet_rsk(req);
1195
1196 rcu_read_lock();
1197 switch (req->rsk_ops->family) {
1198 case AF_INET:
1199 entry = netlbl_domhsh_getentry_af4(secattr->domain,
1200 ireq->ir_rmt_addr);
1201 if (entry == NULL) {
1202 ret_val = -ENOENT;
1203 goto req_setattr_return;
1204 }
1205 switch (entry->type) {
1206 case NETLBL_NLTYPE_CIPSOV4:
1207 ret_val = cipso_v4_req_setattr(req,
1208 entry->cipso, secattr);
1209 break;
1210 case NETLBL_NLTYPE_UNLABELED:
1211 netlbl_req_delattr(req);
1212 ret_val = 0;
1213 break;
1214 default:
1215 ret_val = -ENOENT;
1216 }
1217 break;
1218#if IS_ENABLED(CONFIG_IPV6)
1219 case AF_INET6:
1220 entry = netlbl_domhsh_getentry_af6(secattr->domain,
1221 &ireq->ir_v6_rmt_addr);
1222 if (entry == NULL) {
1223 ret_val = -ENOENT;
1224 goto req_setattr_return;
1225 }
1226 switch (entry->type) {
1227 case NETLBL_NLTYPE_CALIPSO:
1228 ret_val = calipso_req_setattr(req,
1229 entry->calipso, secattr);
1230 break;
1231 case NETLBL_NLTYPE_UNLABELED:
1232 netlbl_req_delattr(req);
1233 ret_val = 0;
1234 break;
1235 default:
1236 ret_val = -ENOENT;
1237 }
1238 break;
1239#endif
1240 default:
1241 ret_val = -EPROTONOSUPPORT;
1242 }
1243
1244req_setattr_return:
1245 rcu_read_unlock();
1246 return ret_val;
1247}
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257void netlbl_req_delattr(struct request_sock *req)
1258{
1259 switch (req->rsk_ops->family) {
1260 case AF_INET:
1261 cipso_v4_req_delattr(req);
1262 break;
1263#if IS_ENABLED(CONFIG_IPV6)
1264 case AF_INET6:
1265 calipso_req_delattr(req);
1266 break;
1267#endif
1268 }
1269}
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282int netlbl_skbuff_setattr(struct sk_buff *skb,
1283 u16 family,
1284 const struct netlbl_lsm_secattr *secattr)
1285{
1286 int ret_val;
1287 struct iphdr *hdr4;
1288#if IS_ENABLED(CONFIG_IPV6)
1289 struct ipv6hdr *hdr6;
1290#endif
1291 struct netlbl_dommap_def *entry;
1292
1293 rcu_read_lock();
1294 switch (family) {
1295 case AF_INET:
1296 hdr4 = ip_hdr(skb);
1297 entry = netlbl_domhsh_getentry_af4(secattr->domain,
1298 hdr4->daddr);
1299 if (entry == NULL) {
1300 ret_val = -ENOENT;
1301 goto skbuff_setattr_return;
1302 }
1303 switch (entry->type) {
1304 case NETLBL_NLTYPE_CIPSOV4:
1305 ret_val = cipso_v4_skbuff_setattr(skb, entry->cipso,
1306 secattr);
1307 break;
1308 case NETLBL_NLTYPE_UNLABELED:
1309
1310
1311 ret_val = cipso_v4_skbuff_delattr(skb);
1312 break;
1313 default:
1314 ret_val = -ENOENT;
1315 }
1316 break;
1317#if IS_ENABLED(CONFIG_IPV6)
1318 case AF_INET6:
1319 hdr6 = ipv6_hdr(skb);
1320 entry = netlbl_domhsh_getentry_af6(secattr->domain,
1321 &hdr6->daddr);
1322 if (entry == NULL) {
1323 ret_val = -ENOENT;
1324 goto skbuff_setattr_return;
1325 }
1326 switch (entry->type) {
1327 case NETLBL_NLTYPE_CALIPSO:
1328 ret_val = calipso_skbuff_setattr(skb, entry->calipso,
1329 secattr);
1330 break;
1331 case NETLBL_NLTYPE_UNLABELED:
1332
1333
1334 ret_val = calipso_skbuff_delattr(skb);
1335 break;
1336 default:
1337 ret_val = -ENOENT;
1338 }
1339 break;
1340#endif
1341 default:
1342 ret_val = -EPROTONOSUPPORT;
1343 }
1344
1345skbuff_setattr_return:
1346 rcu_read_unlock();
1347 return ret_val;
1348}
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363int netlbl_skbuff_getattr(const struct sk_buff *skb,
1364 u16 family,
1365 struct netlbl_lsm_secattr *secattr)
1366{
1367 unsigned char *ptr;
1368
1369 switch (family) {
1370 case AF_INET:
1371 ptr = cipso_v4_optptr(skb);
1372 if (ptr && cipso_v4_getattr(ptr, secattr) == 0)
1373 return 0;
1374 break;
1375#if IS_ENABLED(CONFIG_IPV6)
1376 case AF_INET6:
1377 ptr = calipso_optptr(skb);
1378 if (ptr && calipso_getattr(ptr, secattr) == 0)
1379 return 0;
1380 break;
1381#endif
1382 }
1383
1384 return netlbl_unlabel_getattr(skb, family, secattr);
1385}
1386
1387
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
1399
1400void netlbl_skbuff_err(struct sk_buff *skb, u16 family, int error, int gateway)
1401{
1402 switch (family) {
1403 case AF_INET:
1404 if (cipso_v4_optptr(skb))
1405 cipso_v4_error(skb, error, gateway);
1406 break;
1407 }
1408}
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419void netlbl_cache_invalidate(void)
1420{
1421 cipso_v4_cache_invalidate();
1422#if IS_ENABLED(CONFIG_IPV6)
1423 calipso_cache_invalidate();
1424#endif
1425}
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439int netlbl_cache_add(const struct sk_buff *skb, u16 family,
1440 const struct netlbl_lsm_secattr *secattr)
1441{
1442 unsigned char *ptr;
1443
1444 if ((secattr->flags & NETLBL_SECATTR_CACHE) == 0)
1445 return -ENOMSG;
1446
1447 switch (family) {
1448 case AF_INET:
1449 ptr = cipso_v4_optptr(skb);
1450 if (ptr)
1451 return cipso_v4_cache_add(ptr, secattr);
1452 break;
1453#if IS_ENABLED(CONFIG_IPV6)
1454 case AF_INET6:
1455 ptr = calipso_optptr(skb);
1456 if (ptr)
1457 return calipso_cache_add(ptr, secattr);
1458 break;
1459#endif
1460 }
1461 return -ENOMSG;
1462}
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480struct audit_buffer *netlbl_audit_start(int type,
1481 struct netlbl_audit *audit_info)
1482{
1483 return netlbl_audit_start_common(type, audit_info);
1484}
1485EXPORT_SYMBOL(netlbl_audit_start);
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498static int __init netlbl_init(void)
1499{
1500 int ret_val;
1501
1502 printk(KERN_INFO "NetLabel: Initializing\n");
1503 printk(KERN_INFO "NetLabel: domain hash size = %u\n",
1504 (1 << NETLBL_DOMHSH_BITSIZE));
1505 printk(KERN_INFO "NetLabel: protocols = UNLABELED CIPSOv4 CALIPSO\n");
1506
1507 ret_val = netlbl_domhsh_init(NETLBL_DOMHSH_BITSIZE);
1508 if (ret_val != 0)
1509 goto init_failure;
1510
1511 ret_val = netlbl_unlabel_init(NETLBL_UNLHSH_BITSIZE);
1512 if (ret_val != 0)
1513 goto init_failure;
1514
1515 ret_val = netlbl_netlink_init();
1516 if (ret_val != 0)
1517 goto init_failure;
1518
1519 ret_val = netlbl_unlabel_defconf();
1520 if (ret_val != 0)
1521 goto init_failure;
1522 printk(KERN_INFO "NetLabel: unlabeled traffic allowed by default\n");
1523
1524 return 0;
1525
1526init_failure:
1527 panic("NetLabel: failed to initialize properly (%d)\n", ret_val);
1528}
1529
1530subsys_initcall(netlbl_init);
1531