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76#include <linux/slab.h>
77#include <linux/spinlock.h>
78#include <linux/string.h>
79#include <linux/cred.h>
80#include <linux/rculist.h>
81#include <linux/user_namespace.h>
82
83#include "include/apparmor.h"
84#include "include/capability.h"
85#include "include/cred.h"
86#include "include/file.h"
87#include "include/ipc.h"
88#include "include/match.h"
89#include "include/path.h"
90#include "include/policy.h"
91#include "include/policy_ns.h"
92#include "include/policy_unpack.h"
93#include "include/resource.h"
94
95int unprivileged_userns_apparmor_policy = 1;
96
97const char *const aa_profile_mode_names[] = {
98 "enforce",
99 "complain",
100 "kill",
101 "unconfined",
102};
103
104
105
106
107
108
109
110
111
112
113
114static void __add_profile(struct list_head *list, struct aa_profile *profile)
115{
116 struct aa_label *l;
117
118 AA_BUG(!list);
119 AA_BUG(!profile);
120 AA_BUG(!profile->ns);
121 AA_BUG(!mutex_is_locked(&profile->ns->lock));
122
123 list_add_rcu(&profile->base.list, list);
124
125 aa_get_profile(profile);
126 l = aa_label_insert(&profile->ns->labels, &profile->label);
127 AA_BUG(l != &profile->label);
128 aa_put_label(l);
129}
130
131
132
133
134
135
136
137
138
139
140
141
142
143static void __list_remove_profile(struct aa_profile *profile)
144{
145 AA_BUG(!profile);
146 AA_BUG(!profile->ns);
147 AA_BUG(!mutex_is_locked(&profile->ns->lock));
148
149 list_del_rcu(&profile->base.list);
150 aa_put_profile(profile);
151}
152
153
154
155
156
157
158
159static void __remove_profile(struct aa_profile *profile)
160{
161 AA_BUG(!profile);
162 AA_BUG(!profile->ns);
163 AA_BUG(!mutex_is_locked(&profile->ns->lock));
164
165
166 __aa_profile_list_release(&profile->base.profiles);
167
168 aa_label_remove(&profile->label);
169 __aafs_profile_rmdir(profile);
170 __list_remove_profile(profile);
171}
172
173
174
175
176
177
178
179void __aa_profile_list_release(struct list_head *head)
180{
181 struct aa_profile *profile, *tmp;
182 list_for_each_entry_safe(profile, tmp, head, base.list)
183 __remove_profile(profile);
184}
185
186
187
188
189
190
191static void aa_free_data(void *ptr, void *arg)
192{
193 struct aa_data *data = ptr;
194
195 kzfree(data->data);
196 kzfree(data->key);
197 kzfree(data);
198}
199
200
201
202
203
204
205
206
207
208
209
210void aa_free_profile(struct aa_profile *profile)
211{
212 struct rhashtable *rht;
213 int i;
214
215 AA_DEBUG("%s(%p)\n", __func__, profile);
216
217 if (!profile)
218 return;
219
220
221 aa_policy_destroy(&profile->base);
222 aa_put_profile(rcu_access_pointer(profile->parent));
223
224 aa_put_ns(profile->ns);
225 kzfree(profile->rename);
226
227 aa_free_file_rules(&profile->file);
228 aa_free_cap_rules(&profile->caps);
229 aa_free_rlimit_rules(&profile->rlimits);
230
231 for (i = 0; i < profile->xattr_count; i++)
232 kzfree(profile->xattrs[i]);
233 kzfree(profile->xattrs);
234 kzfree(profile->dirname);
235 aa_put_dfa(profile->xmatch);
236 aa_put_dfa(profile->policy.dfa);
237
238 if (profile->data) {
239 rht = profile->data;
240 profile->data = NULL;
241 rhashtable_free_and_destroy(rht, aa_free_data, NULL);
242 kzfree(rht);
243 }
244
245 kzfree(profile->hash);
246 aa_put_loaddata(profile->rawdata);
247
248 kzfree(profile);
249}
250
251
252
253
254
255
256
257
258struct aa_profile *aa_alloc_profile(const char *hname, struct aa_proxy *proxy,
259 gfp_t gfp)
260{
261 struct aa_profile *profile;
262
263
264 profile = kzalloc(sizeof(*profile) + sizeof(struct aa_profile *) * 2,
265 gfp);
266 if (!profile)
267 return NULL;
268
269 if (!aa_policy_init(&profile->base, NULL, hname, gfp))
270 goto fail;
271 if (!aa_label_init(&profile->label, 1))
272 goto fail;
273
274
275 if (!proxy) {
276 proxy = aa_alloc_proxy(&profile->label, gfp);
277 if (!proxy)
278 goto fail;
279 } else
280 aa_get_proxy(proxy);
281 profile->label.proxy = proxy;
282
283 profile->label.hname = profile->base.hname;
284 profile->label.flags |= FLAG_PROFILE;
285 profile->label.vec[0] = profile;
286
287
288 return profile;
289
290fail:
291 aa_free_profile(profile);
292
293 return NULL;
294}
295
296
297
298
299
300
301
302
303
304
305
306
307
308static struct aa_profile *__strn_find_child(struct list_head *head,
309 const char *name, int len)
310{
311 return (struct aa_profile *)__policy_strn_find(head, name, len);
312}
313
314
315
316
317
318
319
320
321
322
323static struct aa_profile *__find_child(struct list_head *head, const char *name)
324{
325 return __strn_find_child(head, name, strlen(name));
326}
327
328
329
330
331
332
333
334
335struct aa_profile *aa_find_child(struct aa_profile *parent, const char *name)
336{
337 struct aa_profile *profile;
338
339 rcu_read_lock();
340 do {
341 profile = __find_child(&parent->base.profiles, name);
342 } while (profile && !aa_get_profile_not0(profile));
343 rcu_read_unlock();
344
345
346 return profile;
347}
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362static struct aa_policy *__lookup_parent(struct aa_ns *ns,
363 const char *hname)
364{
365 struct aa_policy *policy;
366 struct aa_profile *profile = NULL;
367 char *split;
368
369 policy = &ns->base;
370
371 for (split = strstr(hname, "//"); split;) {
372 profile = __strn_find_child(&policy->profiles, hname,
373 split - hname);
374 if (!profile)
375 return NULL;
376 policy = &profile->base;
377 hname = split + 2;
378 split = strstr(hname, "//");
379 }
380 if (!profile)
381 return &ns->base;
382 return &profile->base;
383}
384
385
386
387
388
389
390
391
392
393
394
395
396
397static struct aa_profile *__lookupn_profile(struct aa_policy *base,
398 const char *hname, size_t n)
399{
400 struct aa_profile *profile = NULL;
401 const char *split;
402
403 for (split = strnstr(hname, "//", n); split;
404 split = strnstr(hname, "//", n)) {
405 profile = __strn_find_child(&base->profiles, hname,
406 split - hname);
407 if (!profile)
408 return NULL;
409
410 base = &profile->base;
411 n -= split + 2 - hname;
412 hname = split + 2;
413 }
414
415 if (n)
416 return __strn_find_child(&base->profiles, hname, n);
417 return NULL;
418}
419
420static struct aa_profile *__lookup_profile(struct aa_policy *base,
421 const char *hname)
422{
423 return __lookupn_profile(base, hname, strlen(hname));
424}
425
426
427
428
429
430
431
432
433
434struct aa_profile *aa_lookupn_profile(struct aa_ns *ns, const char *hname,
435 size_t n)
436{
437 struct aa_profile *profile;
438
439 rcu_read_lock();
440 do {
441 profile = __lookupn_profile(&ns->base, hname, n);
442 } while (profile && !aa_get_profile_not0(profile));
443 rcu_read_unlock();
444
445
446 if (!profile && strncmp(hname, "unconfined", n) == 0)
447 profile = aa_get_newest_profile(ns->unconfined);
448
449
450 return profile;
451}
452
453struct aa_profile *aa_lookup_profile(struct aa_ns *ns, const char *hname)
454{
455 return aa_lookupn_profile(ns, hname, strlen(hname));
456}
457
458struct aa_profile *aa_fqlookupn_profile(struct aa_label *base,
459 const char *fqname, size_t n)
460{
461 struct aa_profile *profile;
462 struct aa_ns *ns;
463 const char *name, *ns_name;
464 size_t ns_len;
465
466 name = aa_splitn_fqname(fqname, n, &ns_name, &ns_len);
467 if (ns_name) {
468 ns = aa_lookupn_ns(labels_ns(base), ns_name, ns_len);
469 if (!ns)
470 return NULL;
471 } else
472 ns = aa_get_ns(labels_ns(base));
473
474 if (name)
475 profile = aa_lookupn_profile(ns, name, n - (name - fqname));
476 else if (ns)
477
478 profile = aa_get_newest_profile(ns->unconfined);
479 else
480 profile = NULL;
481 aa_put_ns(ns);
482
483 return profile;
484}
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504struct aa_profile *aa_new_null_profile(struct aa_profile *parent, bool hat,
505 const char *base, gfp_t gfp)
506{
507 struct aa_profile *p, *profile;
508 const char *bname;
509 char *name = NULL;
510
511 AA_BUG(!parent);
512
513 if (base) {
514 name = kmalloc(strlen(parent->base.hname) + 8 + strlen(base),
515 gfp);
516 if (name) {
517 sprintf(name, "%s//null-%s", parent->base.hname, base);
518 goto name;
519 }
520
521 }
522
523 name = kmalloc(strlen(parent->base.hname) + 2 + 7 + 8, gfp);
524 if (!name)
525 return NULL;
526 sprintf(name, "%s//null-%x", parent->base.hname,
527 atomic_inc_return(&parent->ns->uniq_null));
528
529name:
530
531 bname = basename(name);
532 profile = aa_find_child(parent, bname);
533 if (profile)
534 goto out;
535
536 profile = aa_alloc_profile(name, NULL, gfp);
537 if (!profile)
538 goto fail;
539
540 profile->mode = APPARMOR_COMPLAIN;
541 profile->label.flags |= FLAG_NULL;
542 if (hat)
543 profile->label.flags |= FLAG_HAT;
544 profile->path_flags = parent->path_flags;
545
546
547 rcu_assign_pointer(profile->parent, aa_get_profile(parent));
548 profile->ns = aa_get_ns(parent->ns);
549 profile->file.dfa = aa_get_dfa(nulldfa);
550 profile->policy.dfa = aa_get_dfa(nulldfa);
551
552 mutex_lock_nested(&profile->ns->lock, profile->ns->level);
553 p = __find_child(&parent->base.profiles, bname);
554 if (p) {
555 aa_free_profile(profile);
556 profile = aa_get_profile(p);
557 } else {
558 __add_profile(&parent->base.profiles, profile);
559 }
560 mutex_unlock(&profile->ns->lock);
561
562
563out:
564 kfree(name);
565
566 return profile;
567
568fail:
569 kfree(name);
570 aa_free_profile(profile);
571 return NULL;
572}
573
574
575
576
577
578
579
580
581
582static int replacement_allowed(struct aa_profile *profile, int noreplace,
583 const char **info)
584{
585 if (profile) {
586 if (profile->label.flags & FLAG_IMMUTIBLE) {
587 *info = "cannot replace immutible profile";
588 return -EPERM;
589 } else if (noreplace) {
590 *info = "profile already exists";
591 return -EEXIST;
592 }
593 }
594 return 0;
595}
596
597
598static void audit_cb(struct audit_buffer *ab, void *va)
599{
600 struct common_audit_data *sa = va;
601
602 if (aad(sa)->iface.ns) {
603 audit_log_format(ab, " ns=");
604 audit_log_untrustedstring(ab, aad(sa)->iface.ns);
605 }
606}
607
608
609
610
611
612
613
614
615
616
617
618
619static int audit_policy(struct aa_label *label, const char *op,
620 const char *ns_name, const char *name,
621 const char *info, int error)
622{
623 DEFINE_AUDIT_DATA(sa, LSM_AUDIT_DATA_NONE, op);
624
625 aad(&sa)->iface.ns = ns_name;
626 aad(&sa)->name = name;
627 aad(&sa)->info = info;
628 aad(&sa)->error = error;
629 aad(&sa)->label = label;
630
631 aa_audit_msg(AUDIT_APPARMOR_STATUS, &sa, audit_cb);
632
633 return error;
634}
635
636
637
638
639
640
641
642
643
644bool policy_view_capable(struct aa_ns *ns)
645{
646 struct user_namespace *user_ns = current_user_ns();
647 struct aa_ns *view_ns = aa_get_current_ns();
648 bool root_in_user_ns = uid_eq(current_euid(), make_kuid(user_ns, 0)) ||
649 in_egroup_p(make_kgid(user_ns, 0));
650 bool response = false;
651 if (!ns)
652 ns = view_ns;
653
654 if (root_in_user_ns && aa_ns_visible(view_ns, ns, true) &&
655 (user_ns == &init_user_ns ||
656 (unprivileged_userns_apparmor_policy != 0 &&
657 user_ns->level == view_ns->level)))
658 response = true;
659 aa_put_ns(view_ns);
660
661 return response;
662}
663
664bool policy_admin_capable(struct aa_ns *ns)
665{
666 struct user_namespace *user_ns = current_user_ns();
667 bool capable = ns_capable(user_ns, CAP_MAC_ADMIN);
668
669 AA_DEBUG("cap_mac_admin? %d\n", capable);
670 AA_DEBUG("policy locked? %d\n", aa_g_lock_policy);
671
672 return policy_view_capable(ns) && capable && !aa_g_lock_policy;
673}
674
675
676
677
678
679
680
681
682int aa_may_manage_policy(struct aa_label *label, struct aa_ns *ns, u32 mask)
683{
684 const char *op;
685
686 if (mask & AA_MAY_REMOVE_POLICY)
687 op = OP_PROF_RM;
688 else if (mask & AA_MAY_REPLACE_POLICY)
689 op = OP_PROF_REPL;
690 else
691 op = OP_PROF_LOAD;
692
693
694 if (aa_g_lock_policy)
695 return audit_policy(label, op, NULL, NULL, "policy_locked",
696 -EACCES);
697
698 if (!policy_admin_capable(ns))
699 return audit_policy(label, op, NULL, NULL, "not policy admin",
700 -EACCES);
701
702
703 return 0;
704}
705
706static struct aa_profile *__list_lookup_parent(struct list_head *lh,
707 struct aa_profile *profile)
708{
709 const char *base = basename(profile->base.hname);
710 long len = base - profile->base.hname;
711 struct aa_load_ent *ent;
712
713
714 if (len <= 2)
715 return NULL;
716 len -= 2;
717
718 list_for_each_entry(ent, lh, list) {
719 if (ent->new == profile)
720 continue;
721 if (strncmp(ent->new->base.hname, profile->base.hname, len) ==
722 0 && ent->new->base.hname[len] == 0)
723 return ent->new;
724 }
725
726 return NULL;
727}
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742static void __replace_profile(struct aa_profile *old, struct aa_profile *new)
743{
744 struct aa_profile *child, *tmp;
745
746 if (!list_empty(&old->base.profiles)) {
747 LIST_HEAD(lh);
748 list_splice_init_rcu(&old->base.profiles, &lh, synchronize_rcu);
749
750 list_for_each_entry_safe(child, tmp, &lh, base.list) {
751 struct aa_profile *p;
752
753 list_del_init(&child->base.list);
754 p = __find_child(&new->base.profiles, child->base.name);
755 if (p) {
756
757 __replace_profile(child, p);
758 continue;
759 }
760
761
762
763
764 p = aa_deref_parent(child);
765 rcu_assign_pointer(child->parent, aa_get_profile(new));
766 list_add_rcu(&child->base.list, &new->base.profiles);
767 aa_put_profile(p);
768 }
769 }
770
771 if (!rcu_access_pointer(new->parent)) {
772 struct aa_profile *parent = aa_deref_parent(old);
773 rcu_assign_pointer(new->parent, aa_get_profile(parent));
774 }
775 aa_label_replace(&old->label, &new->label);
776
777 __aafs_profile_migrate_dents(old, new);
778
779 if (list_empty(&new->base.list)) {
780
781 list_replace_rcu(&old->base.list, &new->base.list);
782 aa_get_profile(new);
783 aa_put_profile(old);
784 } else
785 __list_remove_profile(old);
786}
787
788
789
790
791
792
793
794
795
796
797
798static int __lookup_replace(struct aa_ns *ns, const char *hname,
799 bool noreplace, struct aa_profile **p,
800 const char **info)
801{
802 *p = aa_get_profile(__lookup_profile(&ns->base, hname));
803 if (*p) {
804 int error = replacement_allowed(*p, noreplace, info);
805 if (error) {
806 *info = "profile can not be replaced";
807 return error;
808 }
809 }
810
811 return 0;
812}
813
814static void share_name(struct aa_profile *old, struct aa_profile *new)
815{
816 aa_put_str(new->base.hname);
817 aa_get_str(old->base.hname);
818 new->base.hname = old->base.hname;
819 new->base.name = old->base.name;
820 new->label.hname = old->label.hname;
821}
822
823
824
825
826static struct aa_profile *update_to_newest_parent(struct aa_profile *new)
827{
828 struct aa_profile *parent, *newest;
829
830 parent = rcu_dereference_protected(new->parent,
831 mutex_is_locked(&new->ns->lock));
832 newest = aa_get_newest_profile(parent);
833
834
835 if (newest != parent) {
836 aa_put_profile(parent);
837 rcu_assign_pointer(new->parent, newest);
838 } else
839 aa_put_profile(newest);
840
841 return newest;
842}
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858ssize_t aa_replace_profiles(struct aa_ns *policy_ns, struct aa_label *label,
859 u32 mask, struct aa_loaddata *udata)
860{
861 const char *ns_name, *info = NULL;
862 struct aa_ns *ns = NULL;
863 struct aa_load_ent *ent, *tmp;
864 struct aa_loaddata *rawdata_ent;
865 const char *op;
866 ssize_t count, error;
867 LIST_HEAD(lh);
868
869 op = mask & AA_MAY_REPLACE_POLICY ? OP_PROF_REPL : OP_PROF_LOAD;
870 aa_get_loaddata(udata);
871
872 error = aa_unpack(udata, &lh, &ns_name);
873 if (error)
874 goto out;
875
876
877
878
879
880
881 count = 0;
882 list_for_each_entry(ent, &lh, list) {
883 if (ns_name) {
884 if (ent->ns_name &&
885 strcmp(ent->ns_name, ns_name) != 0) {
886 info = "policy load has mixed namespaces";
887 error = -EACCES;
888 goto fail;
889 }
890 } else if (ent->ns_name) {
891 if (count) {
892 info = "policy load has mixed namespaces";
893 error = -EACCES;
894 goto fail;
895 }
896 ns_name = ent->ns_name;
897 } else
898 count++;
899 }
900 if (ns_name) {
901 ns = aa_prepare_ns(policy_ns ? policy_ns : labels_ns(label),
902 ns_name);
903 if (IS_ERR(ns)) {
904 op = OP_PROF_LOAD;
905 info = "failed to prepare namespace";
906 error = PTR_ERR(ns);
907 ns = NULL;
908 ent = NULL;
909 goto fail;
910 }
911 } else
912 ns = aa_get_ns(policy_ns ? policy_ns : labels_ns(label));
913
914 mutex_lock_nested(&ns->lock, ns->level);
915
916 list_for_each_entry(rawdata_ent, &ns->rawdata_list, list) {
917 if (aa_rawdata_eq(rawdata_ent, udata)) {
918 struct aa_loaddata *tmp;
919
920 tmp = __aa_get_loaddata(rawdata_ent);
921
922 if (tmp) {
923 aa_put_loaddata(udata);
924 udata = tmp;
925 break;
926 }
927 }
928 }
929
930 list_for_each_entry(ent, &lh, list) {
931 struct aa_policy *policy;
932
933 ent->new->rawdata = aa_get_loaddata(udata);
934 error = __lookup_replace(ns, ent->new->base.hname,
935 !(mask & AA_MAY_REPLACE_POLICY),
936 &ent->old, &info);
937 if (error)
938 goto fail_lock;
939
940 if (ent->new->rename) {
941 error = __lookup_replace(ns, ent->new->rename,
942 !(mask & AA_MAY_REPLACE_POLICY),
943 &ent->rename, &info);
944 if (error)
945 goto fail_lock;
946 }
947
948
949 ent->new->ns = aa_get_ns(ns);
950
951 if (ent->old || ent->rename)
952 continue;
953
954
955 policy = __lookup_parent(ns, ent->new->base.hname);
956 if (!policy) {
957 struct aa_profile *p;
958 p = __list_lookup_parent(&lh, ent->new);
959 if (!p) {
960 error = -ENOENT;
961 info = "parent does not exist";
962 goto fail_lock;
963 }
964 rcu_assign_pointer(ent->new->parent, aa_get_profile(p));
965 } else if (policy != &ns->base) {
966
967 struct aa_profile *p = (struct aa_profile *) policy;
968 rcu_assign_pointer(ent->new->parent, aa_get_profile(p));
969 }
970 }
971
972
973 if (!udata->dents[AAFS_LOADDATA_DIR]) {
974 error = __aa_fs_create_rawdata(ns, udata);
975 if (error) {
976 info = "failed to create raw_data dir and files";
977 ent = NULL;
978 goto fail_lock;
979 }
980 }
981 list_for_each_entry(ent, &lh, list) {
982 if (!ent->old) {
983 struct dentry *parent;
984 if (rcu_access_pointer(ent->new->parent)) {
985 struct aa_profile *p;
986 p = aa_deref_parent(ent->new);
987 parent = prof_child_dir(p);
988 } else
989 parent = ns_subprofs_dir(ent->new->ns);
990 error = __aafs_profile_mkdir(ent->new, parent);
991 }
992
993 if (error) {
994 info = "failed to create";
995 goto fail_lock;
996 }
997 }
998
999
1000 __aa_bump_ns_revision(ns);
1001 __aa_loaddata_update(udata, ns->revision);
1002 list_for_each_entry_safe(ent, tmp, &lh, list) {
1003 list_del_init(&ent->list);
1004 op = (!ent->old && !ent->rename) ? OP_PROF_LOAD : OP_PROF_REPL;
1005
1006 if (ent->old && ent->old->rawdata == ent->new->rawdata) {
1007
1008 audit_policy(label, op, ns_name, ent->new->base.hname,
1009 "same as current profile, skipping",
1010 error);
1011 goto skip;
1012 }
1013
1014
1015
1016
1017
1018 audit_policy(label, op, ns_name, ent->new->base.hname, NULL,
1019 error);
1020
1021 if (ent->old) {
1022 share_name(ent->old, ent->new);
1023 __replace_profile(ent->old, ent->new);
1024 } else {
1025 struct list_head *lh;
1026
1027 if (rcu_access_pointer(ent->new->parent)) {
1028 struct aa_profile *parent;
1029
1030 parent = update_to_newest_parent(ent->new);
1031 lh = &parent->base.profiles;
1032 } else
1033 lh = &ns->base.profiles;
1034 __add_profile(lh, ent->new);
1035 }
1036 skip:
1037 aa_load_ent_free(ent);
1038 }
1039 __aa_labelset_update_subtree(ns);
1040 mutex_unlock(&ns->lock);
1041
1042out:
1043 aa_put_ns(ns);
1044 aa_put_loaddata(udata);
1045
1046 if (error)
1047 return error;
1048 return udata->size;
1049
1050fail_lock:
1051 mutex_unlock(&ns->lock);
1052
1053
1054 op = (ent && !ent->old) ? OP_PROF_LOAD : OP_PROF_REPL;
1055fail:
1056 audit_policy(label, op, ns_name, ent ? ent->new->base.hname : NULL,
1057 info, error);
1058
1059 info = "valid profile in failed atomic policy load";
1060 list_for_each_entry(tmp, &lh, list) {
1061 if (tmp == ent) {
1062 info = "unchecked profile in failed atomic policy load";
1063
1064 continue;
1065 }
1066 op = (!tmp->old) ? OP_PROF_LOAD : OP_PROF_REPL;
1067 audit_policy(label, op, ns_name, tmp->new->base.hname, info,
1068 error);
1069 }
1070 list_for_each_entry_safe(ent, tmp, &lh, list) {
1071 list_del_init(&ent->list);
1072 aa_load_ent_free(ent);
1073 }
1074
1075 goto out;
1076}
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092ssize_t aa_remove_profiles(struct aa_ns *policy_ns, struct aa_label *subj,
1093 char *fqname, size_t size)
1094{
1095 struct aa_ns *ns = NULL;
1096 struct aa_profile *profile = NULL;
1097 const char *name = fqname, *info = NULL;
1098 const char *ns_name = NULL;
1099 ssize_t error = 0;
1100
1101 if (*fqname == 0) {
1102 info = "no profile specified";
1103 error = -ENOENT;
1104 goto fail;
1105 }
1106
1107 if (fqname[0] == ':') {
1108 size_t ns_len;
1109
1110 name = aa_splitn_fqname(fqname, size, &ns_name, &ns_len);
1111
1112 ns = aa_lookupn_ns(policy_ns ? policy_ns : labels_ns(subj),
1113 ns_name, ns_len);
1114 if (!ns) {
1115 info = "namespace does not exist";
1116 error = -ENOENT;
1117 goto fail;
1118 }
1119 } else
1120
1121 ns = aa_get_ns(policy_ns ? policy_ns : labels_ns(subj));
1122
1123 if (!name) {
1124
1125 mutex_lock_nested(&ns->parent->lock, ns->level);
1126 __aa_remove_ns(ns);
1127 __aa_bump_ns_revision(ns);
1128 mutex_unlock(&ns->parent->lock);
1129 } else {
1130
1131 mutex_lock_nested(&ns->lock, ns->level);
1132 profile = aa_get_profile(__lookup_profile(&ns->base, name));
1133 if (!profile) {
1134 error = -ENOENT;
1135 info = "profile does not exist";
1136 goto fail_ns_lock;
1137 }
1138 name = profile->base.hname;
1139 __remove_profile(profile);
1140 __aa_labelset_update_subtree(ns);
1141 __aa_bump_ns_revision(ns);
1142 mutex_unlock(&ns->lock);
1143 }
1144
1145
1146 (void) audit_policy(subj, OP_PROF_RM, ns_name, name, info,
1147 error);
1148 aa_put_ns(ns);
1149 aa_put_profile(profile);
1150 return size;
1151
1152fail_ns_lock:
1153 mutex_unlock(&ns->lock);
1154 aa_put_ns(ns);
1155
1156fail:
1157 (void) audit_policy(subj, OP_PROF_RM, ns_name, name, info,
1158 error);
1159 return error;
1160}
1161