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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 <asm/bug.h>
41#include <linux/atomic.h>
42
43#include "netlabel_domainhash.h"
44#include "netlabel_unlabeled.h"
45#include "netlabel_cipso_v4.h"
46#include "netlabel_user.h"
47#include "netlabel_mgmt.h"
48#include "netlabel_addrlist.h"
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68int netlbl_cfg_map_del(const char *domain,
69 u16 family,
70 const void *addr,
71 const void *mask,
72 struct netlbl_audit *audit_info)
73{
74 if (addr == NULL && mask == NULL) {
75 return netlbl_domhsh_remove(domain, audit_info);
76 } else if (addr != NULL && mask != NULL) {
77 switch (family) {
78 case AF_INET:
79 return netlbl_domhsh_remove_af4(domain, addr, mask,
80 audit_info);
81 default:
82 return -EPFNOSUPPORT;
83 }
84 } else
85 return -EINVAL;
86}
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102int netlbl_cfg_unlbl_map_add(const char *domain,
103 u16 family,
104 const void *addr,
105 const void *mask,
106 struct netlbl_audit *audit_info)
107{
108 int ret_val = -ENOMEM;
109 struct netlbl_dom_map *entry;
110 struct netlbl_domaddr_map *addrmap = NULL;
111 struct netlbl_domaddr4_map *map4 = NULL;
112 struct netlbl_domaddr6_map *map6 = NULL;
113
114 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
115 if (entry == NULL)
116 return -ENOMEM;
117 if (domain != NULL) {
118 entry->domain = kstrdup(domain, GFP_ATOMIC);
119 if (entry->domain == NULL)
120 goto cfg_unlbl_map_add_failure;
121 }
122
123 if (addr == NULL && mask == NULL)
124 entry->def.type = NETLBL_NLTYPE_UNLABELED;
125 else if (addr != NULL && mask != NULL) {
126 addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC);
127 if (addrmap == NULL)
128 goto cfg_unlbl_map_add_failure;
129 INIT_LIST_HEAD(&addrmap->list4);
130 INIT_LIST_HEAD(&addrmap->list6);
131
132 switch (family) {
133 case AF_INET: {
134 const struct in_addr *addr4 = addr;
135 const struct in_addr *mask4 = mask;
136 map4 = kzalloc(sizeof(*map4), GFP_ATOMIC);
137 if (map4 == NULL)
138 goto cfg_unlbl_map_add_failure;
139 map4->def.type = NETLBL_NLTYPE_UNLABELED;
140 map4->list.addr = addr4->s_addr & mask4->s_addr;
141 map4->list.mask = mask4->s_addr;
142 map4->list.valid = 1;
143 ret_val = netlbl_af4list_add(&map4->list,
144 &addrmap->list4);
145 if (ret_val != 0)
146 goto cfg_unlbl_map_add_failure;
147 break;
148 }
149#if IS_ENABLED(CONFIG_IPV6)
150 case AF_INET6: {
151 const struct in6_addr *addr6 = addr;
152 const struct in6_addr *mask6 = mask;
153 map6 = kzalloc(sizeof(*map6), GFP_ATOMIC);
154 if (map6 == NULL)
155 goto cfg_unlbl_map_add_failure;
156 map6->def.type = NETLBL_NLTYPE_UNLABELED;
157 map6->list.addr = *addr6;
158 map6->list.addr.s6_addr32[0] &= mask6->s6_addr32[0];
159 map6->list.addr.s6_addr32[1] &= mask6->s6_addr32[1];
160 map6->list.addr.s6_addr32[2] &= mask6->s6_addr32[2];
161 map6->list.addr.s6_addr32[3] &= mask6->s6_addr32[3];
162 map6->list.mask = *mask6;
163 map6->list.valid = 1;
164 ret_val = netlbl_af6list_add(&map6->list,
165 &addrmap->list6);
166 if (ret_val != 0)
167 goto cfg_unlbl_map_add_failure;
168 break;
169 }
170#endif
171 default:
172 goto cfg_unlbl_map_add_failure;
173 }
174
175 entry->def.addrsel = addrmap;
176 entry->def.type = NETLBL_NLTYPE_ADDRSELECT;
177 } else {
178 ret_val = -EINVAL;
179 goto cfg_unlbl_map_add_failure;
180 }
181
182 ret_val = netlbl_domhsh_add(entry, audit_info);
183 if (ret_val != 0)
184 goto cfg_unlbl_map_add_failure;
185
186 return 0;
187
188cfg_unlbl_map_add_failure:
189 kfree(entry->domain);
190 kfree(entry);
191 kfree(addrmap);
192 kfree(map4);
193 kfree(map6);
194 return ret_val;
195}
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214int netlbl_cfg_unlbl_static_add(struct net *net,
215 const char *dev_name,
216 const void *addr,
217 const void *mask,
218 u16 family,
219 u32 secid,
220 struct netlbl_audit *audit_info)
221{
222 u32 addr_len;
223
224 switch (family) {
225 case AF_INET:
226 addr_len = sizeof(struct in_addr);
227 break;
228#if IS_ENABLED(CONFIG_IPV6)
229 case AF_INET6:
230 addr_len = sizeof(struct in6_addr);
231 break;
232#endif
233 default:
234 return -EPFNOSUPPORT;
235 }
236
237 return netlbl_unlhsh_add(net,
238 dev_name, addr, mask, addr_len,
239 secid, audit_info);
240}
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257int netlbl_cfg_unlbl_static_del(struct net *net,
258 const char *dev_name,
259 const void *addr,
260 const void *mask,
261 u16 family,
262 struct netlbl_audit *audit_info)
263{
264 u32 addr_len;
265
266 switch (family) {
267 case AF_INET:
268 addr_len = sizeof(struct in_addr);
269 break;
270#if IS_ENABLED(CONFIG_IPV6)
271 case AF_INET6:
272 addr_len = sizeof(struct in6_addr);
273 break;
274#endif
275 default:
276 return -EPFNOSUPPORT;
277 }
278
279 return netlbl_unlhsh_remove(net,
280 dev_name, addr, mask, addr_len,
281 audit_info);
282}
283
284
285
286
287
288
289
290
291
292
293
294int netlbl_cfg_cipsov4_add(struct cipso_v4_doi *doi_def,
295 struct netlbl_audit *audit_info)
296{
297 return cipso_v4_doi_add(doi_def, audit_info);
298}
299
300
301
302
303
304
305
306
307
308
309
310void netlbl_cfg_cipsov4_del(u32 doi, struct netlbl_audit *audit_info)
311{
312 cipso_v4_doi_remove(doi, audit_info);
313}
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329int netlbl_cfg_cipsov4_map_add(u32 doi,
330 const char *domain,
331 const struct in_addr *addr,
332 const struct in_addr *mask,
333 struct netlbl_audit *audit_info)
334{
335 int ret_val = -ENOMEM;
336 struct cipso_v4_doi *doi_def;
337 struct netlbl_dom_map *entry;
338 struct netlbl_domaddr_map *addrmap = NULL;
339 struct netlbl_domaddr4_map *addrinfo = NULL;
340
341 doi_def = cipso_v4_doi_getdef(doi);
342 if (doi_def == NULL)
343 return -ENOENT;
344
345 entry = kzalloc(sizeof(*entry), GFP_ATOMIC);
346 if (entry == NULL)
347 goto out_entry;
348 if (domain != NULL) {
349 entry->domain = kstrdup(domain, GFP_ATOMIC);
350 if (entry->domain == NULL)
351 goto out_domain;
352 }
353
354 if (addr == NULL && mask == NULL) {
355 entry->def.cipso = doi_def;
356 entry->def.type = NETLBL_NLTYPE_CIPSOV4;
357 } else if (addr != NULL && mask != NULL) {
358 addrmap = kzalloc(sizeof(*addrmap), GFP_ATOMIC);
359 if (addrmap == NULL)
360 goto out_addrmap;
361 INIT_LIST_HEAD(&addrmap->list4);
362 INIT_LIST_HEAD(&addrmap->list6);
363
364 addrinfo = kzalloc(sizeof(*addrinfo), GFP_ATOMIC);
365 if (addrinfo == NULL)
366 goto out_addrinfo;
367 addrinfo->def.cipso = doi_def;
368 addrinfo->def.type = NETLBL_NLTYPE_CIPSOV4;
369 addrinfo->list.addr = addr->s_addr & mask->s_addr;
370 addrinfo->list.mask = mask->s_addr;
371 addrinfo->list.valid = 1;
372 ret_val = netlbl_af4list_add(&addrinfo->list, &addrmap->list4);
373 if (ret_val != 0)
374 goto cfg_cipsov4_map_add_failure;
375
376 entry->def.addrsel = addrmap;
377 entry->def.type = NETLBL_NLTYPE_ADDRSELECT;
378 } else {
379 ret_val = -EINVAL;
380 goto out_addrmap;
381 }
382
383 ret_val = netlbl_domhsh_add(entry, audit_info);
384 if (ret_val != 0)
385 goto cfg_cipsov4_map_add_failure;
386
387 return 0;
388
389cfg_cipsov4_map_add_failure:
390 kfree(addrinfo);
391out_addrinfo:
392 kfree(addrmap);
393out_addrmap:
394 kfree(entry->domain);
395out_domain:
396 kfree(entry);
397out_entry:
398 cipso_v4_doi_putdef(doi_def);
399 return ret_val;
400}
401
402
403
404
405
406#define _CM_F_NONE 0x00000000
407#define _CM_F_ALLOC 0x00000001
408#define _CM_F_WALK 0x00000002
409
410
411
412
413
414
415
416
417
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419
420
421
422
423
424
425static struct netlbl_lsm_catmap *_netlbl_catmap_getnode(
426 struct netlbl_lsm_catmap **catmap,
427 u32 offset,
428 unsigned int cm_flags,
429 gfp_t gfp_flags)
430{
431 struct netlbl_lsm_catmap *iter = *catmap;
432 struct netlbl_lsm_catmap *prev = NULL;
433
434 if (iter == NULL)
435 goto catmap_getnode_alloc;
436 if (offset < iter->startbit)
437 goto catmap_getnode_walk;
438 while (iter && offset >= (iter->startbit + NETLBL_CATMAP_SIZE)) {
439 prev = iter;
440 iter = iter->next;
441 }
442 if (iter == NULL || offset < iter->startbit)
443 goto catmap_getnode_walk;
444
445 return iter;
446
447catmap_getnode_walk:
448 if (cm_flags & _CM_F_WALK)
449 return iter;
450catmap_getnode_alloc:
451 if (!(cm_flags & _CM_F_ALLOC))
452 return NULL;
453
454 iter = netlbl_catmap_alloc(gfp_flags);
455 if (iter == NULL)
456 return NULL;
457 iter->startbit = offset & ~(NETLBL_CATMAP_SIZE - 1);
458
459 if (prev == NULL) {
460 iter->next = *catmap;
461 *catmap = iter;
462 } else {
463 iter->next = prev->next;
464 prev->next = iter;
465 }
466
467 return iter;
468}
469
470
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472
473
474
475
476
477
478
479
480int netlbl_catmap_walk(struct netlbl_lsm_catmap *catmap, u32 offset)
481{
482 struct netlbl_lsm_catmap *iter = catmap;
483 u32 idx;
484 u32 bit;
485 NETLBL_CATMAP_MAPTYPE bitmap;
486
487 iter = _netlbl_catmap_getnode(&catmap, offset, _CM_F_WALK, 0);
488 if (iter == NULL)
489 return -ENOENT;
490 if (offset > iter->startbit) {
491 offset -= iter->startbit;
492 idx = offset / NETLBL_CATMAP_MAPSIZE;
493 bit = offset % NETLBL_CATMAP_MAPSIZE;
494 } else {
495 idx = 0;
496 bit = 0;
497 }
498 bitmap = iter->bitmap[idx] >> bit;
499
500 for (;;) {
501 if (bitmap != 0) {
502 while ((bitmap & NETLBL_CATMAP_BIT) == 0) {
503 bitmap >>= 1;
504 bit++;
505 }
506 return iter->startbit +
507 (NETLBL_CATMAP_MAPSIZE * idx) + bit;
508 }
509 if (++idx >= NETLBL_CATMAP_MAPCNT) {
510 if (iter->next != NULL) {
511 iter = iter->next;
512 idx = 0;
513 } else
514 return -ENOENT;
515 }
516 bitmap = iter->bitmap[idx];
517 bit = 0;
518 }
519
520 return -ENOENT;
521}
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531
532
533
534int netlbl_catmap_walkrng(struct netlbl_lsm_catmap *catmap, u32 offset)
535{
536 struct netlbl_lsm_catmap *iter;
537 struct netlbl_lsm_catmap *prev = NULL;
538 u32 idx;
539 u32 bit;
540 NETLBL_CATMAP_MAPTYPE bitmask;
541 NETLBL_CATMAP_MAPTYPE bitmap;
542
543 iter = _netlbl_catmap_getnode(&catmap, offset, _CM_F_WALK, 0);
544 if (iter == NULL)
545 return -ENOENT;
546 if (offset > iter->startbit) {
547 offset -= iter->startbit;
548 idx = offset / NETLBL_CATMAP_MAPSIZE;
549 bit = offset % NETLBL_CATMAP_MAPSIZE;
550 } else {
551 idx = 0;
552 bit = 0;
553 }
554 bitmask = NETLBL_CATMAP_BIT << bit;
555
556 for (;;) {
557 bitmap = iter->bitmap[idx];
558 while (bitmask != 0 && (bitmap & bitmask) != 0) {
559 bitmask <<= 1;
560 bit++;
561 }
562
563 if (prev && idx == 0 && bit == 0)
564 return prev->startbit + NETLBL_CATMAP_SIZE - 1;
565 else if (bitmask != 0)
566 return iter->startbit +
567 (NETLBL_CATMAP_MAPSIZE * idx) + bit - 1;
568 else if (++idx >= NETLBL_CATMAP_MAPCNT) {
569 if (iter->next == NULL)
570 return iter->startbit + NETLBL_CATMAP_SIZE - 1;
571 prev = iter;
572 iter = iter->next;
573 idx = 0;
574 }
575 bitmask = NETLBL_CATMAP_BIT;
576 bit = 0;
577 }
578
579 return -ENOENT;
580}
581
582
583
584
585
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587
588
589
590
591
592
593
594
595
596int netlbl_catmap_getlong(struct netlbl_lsm_catmap *catmap,
597 u32 *offset,
598 unsigned long *bitmap)
599{
600 struct netlbl_lsm_catmap *iter;
601 u32 off = *offset;
602 u32 idx;
603
604
605 if ((off & (BITS_PER_LONG - 1)) != 0)
606 return -EINVAL;
607
608 if (off < catmap->startbit) {
609 off = catmap->startbit;
610 *offset = off;
611 }
612 iter = _netlbl_catmap_getnode(&catmap, off, _CM_F_NONE, 0);
613 if (iter == NULL) {
614 *offset = (u32)-1;
615 return 0;
616 }
617
618 if (off < iter->startbit) {
619 off = iter->startbit;
620 *offset = off;
621 } else
622 off -= iter->startbit;
623
624 idx = off / NETLBL_CATMAP_MAPSIZE;
625 *bitmap = iter->bitmap[idx] >> (off % NETLBL_CATMAP_SIZE);
626
627 return 0;
628}
629
630
631
632
633
634
635
636
637
638
639
640
641int netlbl_catmap_setbit(struct netlbl_lsm_catmap **catmap,
642 u32 bit,
643 gfp_t flags)
644{
645 struct netlbl_lsm_catmap *iter;
646 u32 idx;
647
648 iter = _netlbl_catmap_getnode(catmap, bit, _CM_F_ALLOC, flags);
649 if (iter == NULL)
650 return -ENOMEM;
651
652 bit -= iter->startbit;
653 idx = bit / NETLBL_CATMAP_MAPSIZE;
654 iter->bitmap[idx] |= NETLBL_CATMAP_BIT << (bit % NETLBL_CATMAP_MAPSIZE);
655
656 return 0;
657}
658
659
660
661
662
663
664
665
666
667
668
669
670
671int netlbl_catmap_setrng(struct netlbl_lsm_catmap **catmap,
672 u32 start,
673 u32 end,
674 gfp_t flags)
675{
676 int rc = 0;
677 u32 spot = start;
678
679 while (rc == 0 && spot <= end) {
680 if (((spot & (BITS_PER_LONG - 1)) != 0) &&
681 ((end - spot) > BITS_PER_LONG)) {
682 rc = netlbl_catmap_setlong(catmap,
683 spot,
684 (unsigned long)-1,
685 flags);
686 spot += BITS_PER_LONG;
687 } else
688 rc = netlbl_catmap_setbit(catmap, spot++, flags);
689 }
690
691 return rc;
692}
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707int netlbl_catmap_setlong(struct netlbl_lsm_catmap **catmap,
708 u32 offset,
709 unsigned long bitmap,
710 gfp_t flags)
711{
712 struct netlbl_lsm_catmap *iter;
713 u32 idx;
714
715
716 if ((offset & (BITS_PER_LONG - 1)) != 0)
717 return -EINVAL;
718
719 iter = _netlbl_catmap_getnode(catmap, offset, _CM_F_ALLOC, flags);
720 if (iter == NULL)
721 return -ENOMEM;
722
723 offset -= iter->startbit;
724 idx = offset / NETLBL_CATMAP_MAPSIZE;
725 iter->bitmap[idx] |= bitmap << (offset % NETLBL_CATMAP_MAPSIZE);
726
727 return 0;
728}
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746int netlbl_enabled(void)
747{
748
749
750
751 return (atomic_read(&netlabel_mgmt_protocount) > 0);
752}
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769int netlbl_sock_setattr(struct sock *sk,
770 u16 family,
771 const struct netlbl_lsm_secattr *secattr)
772{
773 int ret_val;
774 struct netlbl_dom_map *dom_entry;
775
776 rcu_read_lock();
777 dom_entry = netlbl_domhsh_getentry(secattr->domain);
778 if (dom_entry == NULL) {
779 ret_val = -ENOENT;
780 goto socket_setattr_return;
781 }
782 switch (family) {
783 case AF_INET:
784 switch (dom_entry->def.type) {
785 case NETLBL_NLTYPE_ADDRSELECT:
786 ret_val = -EDESTADDRREQ;
787 break;
788 case NETLBL_NLTYPE_CIPSOV4:
789 ret_val = cipso_v4_sock_setattr(sk,
790 dom_entry->def.cipso,
791 secattr);
792 break;
793 case NETLBL_NLTYPE_UNLABELED:
794 ret_val = 0;
795 break;
796 default:
797 ret_val = -ENOENT;
798 }
799 break;
800#if IS_ENABLED(CONFIG_IPV6)
801 case AF_INET6:
802
803
804 ret_val = 0;
805 break;
806#endif
807 default:
808 ret_val = -EPROTONOSUPPORT;
809 }
810
811socket_setattr_return:
812 rcu_read_unlock();
813 return ret_val;
814}
815
816
817
818
819
820
821
822
823
824
825void netlbl_sock_delattr(struct sock *sk)
826{
827 cipso_v4_sock_delattr(sk);
828}
829
830
831
832
833
834
835
836
837
838
839
840
841
842int netlbl_sock_getattr(struct sock *sk,
843 struct netlbl_lsm_secattr *secattr)
844{
845 int ret_val;
846
847 switch (sk->sk_family) {
848 case AF_INET:
849 ret_val = cipso_v4_sock_getattr(sk, secattr);
850 break;
851#if IS_ENABLED(CONFIG_IPV6)
852 case AF_INET6:
853 ret_val = -ENOMSG;
854 break;
855#endif
856 default:
857 ret_val = -EPROTONOSUPPORT;
858 }
859
860 return ret_val;
861}
862
863
864
865
866
867
868
869
870
871
872
873
874
875int netlbl_conn_setattr(struct sock *sk,
876 struct sockaddr *addr,
877 const struct netlbl_lsm_secattr *secattr)
878{
879 int ret_val;
880 struct sockaddr_in *addr4;
881 struct netlbl_dommap_def *entry;
882
883 rcu_read_lock();
884 switch (addr->sa_family) {
885 case AF_INET:
886 addr4 = (struct sockaddr_in *)addr;
887 entry = netlbl_domhsh_getentry_af4(secattr->domain,
888 addr4->sin_addr.s_addr);
889 if (entry == NULL) {
890 ret_val = -ENOENT;
891 goto conn_setattr_return;
892 }
893 switch (entry->type) {
894 case NETLBL_NLTYPE_CIPSOV4:
895 ret_val = cipso_v4_sock_setattr(sk,
896 entry->cipso, secattr);
897 break;
898 case NETLBL_NLTYPE_UNLABELED:
899
900
901 cipso_v4_sock_delattr(sk);
902 ret_val = 0;
903 break;
904 default:
905 ret_val = -ENOENT;
906 }
907 break;
908#if IS_ENABLED(CONFIG_IPV6)
909 case AF_INET6:
910
911
912 ret_val = 0;
913 break;
914#endif
915 default:
916 ret_val = -EPROTONOSUPPORT;
917 }
918
919conn_setattr_return:
920 rcu_read_unlock();
921 return ret_val;
922}
923
924
925
926
927
928
929
930
931
932
933
934int netlbl_req_setattr(struct request_sock *req,
935 const struct netlbl_lsm_secattr *secattr)
936{
937 int ret_val;
938 struct netlbl_dommap_def *entry;
939
940 rcu_read_lock();
941 switch (req->rsk_ops->family) {
942 case AF_INET:
943 entry = netlbl_domhsh_getentry_af4(secattr->domain,
944 inet_rsk(req)->ir_rmt_addr);
945 if (entry == NULL) {
946 ret_val = -ENOENT;
947 goto req_setattr_return;
948 }
949 switch (entry->type) {
950 case NETLBL_NLTYPE_CIPSOV4:
951 ret_val = cipso_v4_req_setattr(req,
952 entry->cipso, secattr);
953 break;
954 case NETLBL_NLTYPE_UNLABELED:
955
956
957 cipso_v4_req_delattr(req);
958 ret_val = 0;
959 break;
960 default:
961 ret_val = -ENOENT;
962 }
963 break;
964#if IS_ENABLED(CONFIG_IPV6)
965 case AF_INET6:
966
967
968 ret_val = 0;
969 break;
970#endif
971 default:
972 ret_val = -EPROTONOSUPPORT;
973 }
974
975req_setattr_return:
976 rcu_read_unlock();
977 return ret_val;
978}
979
980
981
982
983
984
985
986
987
988void netlbl_req_delattr(struct request_sock *req)
989{
990 cipso_v4_req_delattr(req);
991}
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004int netlbl_skbuff_setattr(struct sk_buff *skb,
1005 u16 family,
1006 const struct netlbl_lsm_secattr *secattr)
1007{
1008 int ret_val;
1009 struct iphdr *hdr4;
1010 struct netlbl_dommap_def *entry;
1011
1012 rcu_read_lock();
1013 switch (family) {
1014 case AF_INET:
1015 hdr4 = ip_hdr(skb);
1016 entry = netlbl_domhsh_getentry_af4(secattr->domain,hdr4->daddr);
1017 if (entry == NULL) {
1018 ret_val = -ENOENT;
1019 goto skbuff_setattr_return;
1020 }
1021 switch (entry->type) {
1022 case NETLBL_NLTYPE_CIPSOV4:
1023 ret_val = cipso_v4_skbuff_setattr(skb, entry->cipso,
1024 secattr);
1025 break;
1026 case NETLBL_NLTYPE_UNLABELED:
1027
1028
1029 ret_val = cipso_v4_skbuff_delattr(skb);
1030 break;
1031 default:
1032 ret_val = -ENOENT;
1033 }
1034 break;
1035#if IS_ENABLED(CONFIG_IPV6)
1036 case AF_INET6:
1037
1038
1039 ret_val = 0;
1040 break;
1041#endif
1042 default:
1043 ret_val = -EPROTONOSUPPORT;
1044 }
1045
1046skbuff_setattr_return:
1047 rcu_read_unlock();
1048 return ret_val;
1049}
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064int netlbl_skbuff_getattr(const struct sk_buff *skb,
1065 u16 family,
1066 struct netlbl_lsm_secattr *secattr)
1067{
1068 unsigned char *ptr;
1069
1070 switch (family) {
1071 case AF_INET:
1072 ptr = cipso_v4_optptr(skb);
1073 if (ptr && cipso_v4_getattr(ptr, secattr) == 0)
1074 return 0;
1075 break;
1076#if IS_ENABLED(CONFIG_IPV6)
1077 case AF_INET6:
1078 break;
1079#endif
1080 }
1081
1082 return netlbl_unlabel_getattr(skb, family, secattr);
1083}
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097void netlbl_skbuff_err(struct sk_buff *skb, int error, int gateway)
1098{
1099 if (cipso_v4_optptr(skb))
1100 cipso_v4_error(skb, error, gateway);
1101}
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112void netlbl_cache_invalidate(void)
1113{
1114 cipso_v4_cache_invalidate();
1115}
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128int netlbl_cache_add(const struct sk_buff *skb,
1129 const struct netlbl_lsm_secattr *secattr)
1130{
1131 unsigned char *ptr;
1132
1133 if ((secattr->flags & NETLBL_SECATTR_CACHE) == 0)
1134 return -ENOMSG;
1135
1136 ptr = cipso_v4_optptr(skb);
1137 if (ptr)
1138 return cipso_v4_cache_add(ptr, secattr);
1139
1140 return -ENOMSG;
1141}
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159struct audit_buffer *netlbl_audit_start(int type,
1160 struct netlbl_audit *audit_info)
1161{
1162 return netlbl_audit_start_common(type, audit_info);
1163}
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176static int __init netlbl_init(void)
1177{
1178 int ret_val;
1179
1180 printk(KERN_INFO "NetLabel: Initializing\n");
1181 printk(KERN_INFO "NetLabel: domain hash size = %u\n",
1182 (1 << NETLBL_DOMHSH_BITSIZE));
1183 printk(KERN_INFO "NetLabel: protocols ="
1184 " UNLABELED"
1185 " CIPSOv4"
1186 "\n");
1187
1188 ret_val = netlbl_domhsh_init(NETLBL_DOMHSH_BITSIZE);
1189 if (ret_val != 0)
1190 goto init_failure;
1191
1192 ret_val = netlbl_unlabel_init(NETLBL_UNLHSH_BITSIZE);
1193 if (ret_val != 0)
1194 goto init_failure;
1195
1196 ret_val = netlbl_netlink_init();
1197 if (ret_val != 0)
1198 goto init_failure;
1199
1200 ret_val = netlbl_unlabel_defconf();
1201 if (ret_val != 0)
1202 goto init_failure;
1203 printk(KERN_INFO "NetLabel: unlabeled traffic allowed by default\n");
1204
1205 return 0;
1206
1207init_failure:
1208 panic("NetLabel: failed to initialize properly (%d)\n", ret_val);
1209}
1210
1211subsys_initcall(netlbl_init);
1212