1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Implementation of the policy database.
4 *
5 * Author : Stephen Smalley, <stephen.smalley.work@gmail.com>
6 */
7
8/*
9 * Updated: Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com>
10 * Support for enhanced MLS infrastructure.
11 * Copyright (C) 2004-2005 Trusted Computer Solutions, Inc.
12 *
13 * Updated: Frank Mayer <mayerf@tresys.com> and
14 * Karl MacMillan <kmacmillan@tresys.com>
15 * Added conditional policy language extensions
16 * Copyright (C) 2003-2004 Tresys Technology, LLC
17 *
18 * Updated: Hewlett-Packard <paul@paul-moore.com>
19 * Added support for the policy capability bitmap
20 * Copyright (C) 2007 Hewlett-Packard Development Company, L.P.
21 *
22 * Update: Mellanox Techonologies
23 * Added Infiniband support
24 * Copyright (C) 2016 Mellanox Techonologies
25 */
26
27#include <linux/kernel.h>
28#include <linux/sched.h>
29#include <linux/slab.h>
30#include <linux/string.h>
31#include <linux/errno.h>
32#include <linux/audit.h>
33#include "security.h"
34
35#include "policydb.h"
36#include "conditional.h"
37#include "mls.h"
38#include "services.h"
39
40#ifdef CONFIG_SECURITY_SELINUX_DEBUG
41/* clang-format off */
42static const char *const symtab_name[SYM_NUM] = {
43 "common prefixes",
44 "classes",
45 "roles",
46 "types",
47 "users",
48 "bools",
49 "levels",
50 "categories",
51};
52/* clang-format off */
53#endif
54
55struct policydb_compat_info {
56 unsigned int version;
57 unsigned int sym_num;
58 unsigned int ocon_num;
59};
60
61/* These need to be updated if SYM_NUM or OCON_NUM changes */
62static const struct policydb_compat_info policydb_compat[] = {
63 {
64 .version = POLICYDB_VERSION_BASE,
65 .sym_num = SYM_NUM - 3,
66 .ocon_num = OCON_NUM - 3,
67 },
68 {
69 .version = POLICYDB_VERSION_BOOL,
70 .sym_num = SYM_NUM - 2,
71 .ocon_num = OCON_NUM - 3,
72 },
73 {
74 .version = POLICYDB_VERSION_IPV6,
75 .sym_num = SYM_NUM - 2,
76 .ocon_num = OCON_NUM - 2,
77 },
78 {
79 .version = POLICYDB_VERSION_NLCLASS,
80 .sym_num = SYM_NUM - 2,
81 .ocon_num = OCON_NUM - 2,
82 },
83 {
84 .version = POLICYDB_VERSION_MLS,
85 .sym_num = SYM_NUM,
86 .ocon_num = OCON_NUM - 2,
87 },
88 {
89 .version = POLICYDB_VERSION_AVTAB,
90 .sym_num = SYM_NUM,
91 .ocon_num = OCON_NUM - 2,
92 },
93 {
94 .version = POLICYDB_VERSION_RANGETRANS,
95 .sym_num = SYM_NUM,
96 .ocon_num = OCON_NUM - 2,
97 },
98 {
99 .version = POLICYDB_VERSION_POLCAP,
100 .sym_num = SYM_NUM,
101 .ocon_num = OCON_NUM - 2,
102 },
103 {
104 .version = POLICYDB_VERSION_PERMISSIVE,
105 .sym_num = SYM_NUM,
106 .ocon_num = OCON_NUM - 2,
107 },
108 {
109 .version = POLICYDB_VERSION_BOUNDARY,
110 .sym_num = SYM_NUM,
111 .ocon_num = OCON_NUM - 2,
112 },
113 {
114 .version = POLICYDB_VERSION_FILENAME_TRANS,
115 .sym_num = SYM_NUM,
116 .ocon_num = OCON_NUM - 2,
117 },
118 {
119 .version = POLICYDB_VERSION_ROLETRANS,
120 .sym_num = SYM_NUM,
121 .ocon_num = OCON_NUM - 2,
122 },
123 {
124 .version = POLICYDB_VERSION_NEW_OBJECT_DEFAULTS,
125 .sym_num = SYM_NUM,
126 .ocon_num = OCON_NUM - 2,
127 },
128 {
129 .version = POLICYDB_VERSION_DEFAULT_TYPE,
130 .sym_num = SYM_NUM,
131 .ocon_num = OCON_NUM - 2,
132 },
133 {
134 .version = POLICYDB_VERSION_CONSTRAINT_NAMES,
135 .sym_num = SYM_NUM,
136 .ocon_num = OCON_NUM - 2,
137 },
138 {
139 .version = POLICYDB_VERSION_XPERMS_IOCTL,
140 .sym_num = SYM_NUM,
141 .ocon_num = OCON_NUM - 2,
142 },
143 {
144 .version = POLICYDB_VERSION_INFINIBAND,
145 .sym_num = SYM_NUM,
146 .ocon_num = OCON_NUM,
147 },
148 {
149 .version = POLICYDB_VERSION_GLBLUB,
150 .sym_num = SYM_NUM,
151 .ocon_num = OCON_NUM,
152 },
153 {
154 .version = POLICYDB_VERSION_COMP_FTRANS,
155 .sym_num = SYM_NUM,
156 .ocon_num = OCON_NUM,
157 },
158 {
159 .version = POLICYDB_VERSION_COND_XPERMS,
160 .sym_num = SYM_NUM,
161 .ocon_num = OCON_NUM,
162 },
163 {
164 .version = POLICYDB_VERSION_NEVERAUDIT,
165 .sym_num = SYM_NUM,
166 .ocon_num = OCON_NUM,
167 },
168};
169
170static const struct policydb_compat_info *
171policydb_lookup_compat(unsigned int version)
172{
173 unsigned int i;
174
175 for (i = 0; i < ARRAY_SIZE(policydb_compat); i++) {
176 if (policydb_compat[i].version == version)
177 return &policydb_compat[i];
178 }
179
180 return NULL;
181}
182
183/*
184 * The following *_destroy functions are used to
185 * free any memory allocated for each kind of
186 * symbol data in the policy database.
187 */
188
189static int perm_destroy(void *key, void *datum, void *p)
190{
191 kfree(objp: key);
192 kfree(objp: datum);
193 return 0;
194}
195
196static int common_destroy(void *key, void *datum, void *p)
197{
198 struct common_datum *comdatum;
199
200 kfree(objp: key);
201 if (datum) {
202 comdatum = datum;
203 hashtab_map(h: &comdatum->permissions.table, apply: perm_destroy, NULL);
204 hashtab_destroy(h: &comdatum->permissions.table);
205 }
206 kfree(objp: datum);
207 return 0;
208}
209
210static void constraint_expr_destroy(struct constraint_expr *expr)
211{
212 if (expr) {
213 ebitmap_destroy(e: &expr->names);
214 if (expr->type_names) {
215 ebitmap_destroy(e: &expr->type_names->types);
216 ebitmap_destroy(e: &expr->type_names->negset);
217 kfree(objp: expr->type_names);
218 }
219 kfree(objp: expr);
220 }
221}
222
223static int cls_destroy(void *key, void *datum, void *p)
224{
225 struct class_datum *cladatum;
226 struct constraint_node *constraint, *ctemp;
227 struct constraint_expr *e, *etmp;
228
229 kfree(objp: key);
230 if (datum) {
231 cladatum = datum;
232 hashtab_map(h: &cladatum->permissions.table, apply: perm_destroy, NULL);
233 hashtab_destroy(h: &cladatum->permissions.table);
234 constraint = cladatum->constraints;
235 while (constraint) {
236 e = constraint->expr;
237 while (e) {
238 etmp = e;
239 e = e->next;
240 constraint_expr_destroy(expr: etmp);
241 }
242 ctemp = constraint;
243 constraint = constraint->next;
244 kfree(objp: ctemp);
245 }
246
247 constraint = cladatum->validatetrans;
248 while (constraint) {
249 e = constraint->expr;
250 while (e) {
251 etmp = e;
252 e = e->next;
253 constraint_expr_destroy(expr: etmp);
254 }
255 ctemp = constraint;
256 constraint = constraint->next;
257 kfree(objp: ctemp);
258 }
259 kfree(objp: cladatum->comkey);
260 }
261 kfree(objp: datum);
262 return 0;
263}
264
265static int role_destroy(void *key, void *datum, void *p)
266{
267 struct role_datum *role;
268
269 kfree(objp: key);
270 if (datum) {
271 role = datum;
272 ebitmap_destroy(e: &role->dominates);
273 ebitmap_destroy(e: &role->types);
274 }
275 kfree(objp: datum);
276 return 0;
277}
278
279static int type_destroy(void *key, void *datum, void *p)
280{
281 kfree(objp: key);
282 kfree(objp: datum);
283 return 0;
284}
285
286static int user_destroy(void *key, void *datum, void *p)
287{
288 struct user_datum *usrdatum;
289
290 kfree(objp: key);
291 if (datum) {
292 usrdatum = datum;
293 ebitmap_destroy(e: &usrdatum->roles);
294 ebitmap_destroy(e: &usrdatum->range.level[0].cat);
295 ebitmap_destroy(e: &usrdatum->range.level[1].cat);
296 ebitmap_destroy(e: &usrdatum->dfltlevel.cat);
297 }
298 kfree(objp: datum);
299 return 0;
300}
301
302static int sens_destroy(void *key, void *datum, void *p)
303{
304 struct level_datum *levdatum;
305
306 kfree(objp: key);
307 if (datum) {
308 levdatum = datum;
309 ebitmap_destroy(e: &levdatum->level.cat);
310 }
311 kfree(objp: datum);
312 return 0;
313}
314
315static int cat_destroy(void *key, void *datum, void *p)
316{
317 kfree(objp: key);
318 kfree(objp: datum);
319 return 0;
320}
321
322/* clang-format off */
323static int (*const destroy_f[SYM_NUM])(void *key, void *datum, void *datap) = {
324 common_destroy,
325 cls_destroy,
326 role_destroy,
327 type_destroy,
328 user_destroy,
329 cond_destroy_bool,
330 sens_destroy,
331 cat_destroy,
332};
333/* clang-format on */
334
335static int filenametr_destroy(void *key, void *datum, void *p)
336{
337 struct filename_trans_key *ft = key;
338 struct filename_trans_datum *next, *d = datum;
339
340 kfree(objp: ft->name);
341 kfree(objp: key);
342 do {
343 ebitmap_destroy(e: &d->stypes);
344 next = d->next;
345 kfree(objp: d);
346 d = next;
347 } while (unlikely(d));
348 cond_resched();
349 return 0;
350}
351
352static int range_tr_destroy(void *key, void *datum, void *p)
353{
354 struct mls_range *rt = datum;
355
356 kfree(objp: key);
357 ebitmap_destroy(e: &rt->level[0].cat);
358 ebitmap_destroy(e: &rt->level[1].cat);
359 kfree(objp: datum);
360 cond_resched();
361 return 0;
362}
363
364static int role_tr_destroy(void *key, void *datum, void *p)
365{
366 kfree(objp: key);
367 kfree(objp: datum);
368 return 0;
369}
370
371static void ocontext_destroy(struct ocontext *c, unsigned int i)
372{
373 if (!c)
374 return;
375
376 context_destroy(c: &c->context[0]);
377 context_destroy(c: &c->context[1]);
378 if (i == OCON_ISID || i == OCON_FS || i == OCON_NETIF ||
379 i == OCON_FSUSE)
380 kfree(objp: c->u.name);
381 kfree(objp: c);
382}
383
384/*
385 * Initialize the role table.
386 */
387static int roles_init(struct policydb *p)
388{
389 char *key = NULL;
390 int rc;
391 struct role_datum *role;
392
393 role = kzalloc(sizeof(*role), GFP_KERNEL);
394 if (!role)
395 return -ENOMEM;
396
397 rc = -EINVAL;
398 role->value = ++p->p_roles.nprim;
399 if (role->value != OBJECT_R_VAL)
400 goto out;
401
402 rc = -ENOMEM;
403 key = kstrdup(OBJECT_R, GFP_KERNEL);
404 if (!key)
405 goto out;
406
407 rc = symtab_insert(s: &p->p_roles, name: key, datum: role);
408 if (rc)
409 goto out;
410
411 return 0;
412out:
413 kfree(objp: key);
414 kfree(objp: role);
415 return rc;
416}
417
418static u32 filenametr_hash(const void *k)
419{
420 const struct filename_trans_key *ft = k;
421 unsigned long salt = ft->ttype ^ ft->tclass;
422
423 return full_name_hash(salt: (void *)salt, ft->name, strlen(ft->name));
424}
425
426static int filenametr_cmp(const void *k1, const void *k2)
427{
428 const struct filename_trans_key *ft1 = k1;
429 const struct filename_trans_key *ft2 = k2;
430 int v;
431
432 v = ft1->ttype - ft2->ttype;
433 if (v)
434 return v;
435
436 v = ft1->tclass - ft2->tclass;
437 if (v)
438 return v;
439
440 return strcmp(ft1->name, ft2->name);
441}
442
443static const struct hashtab_key_params filenametr_key_params = {
444 .hash = filenametr_hash,
445 .cmp = filenametr_cmp,
446};
447
448struct filename_trans_datum *
449policydb_filenametr_search(struct policydb *p, struct filename_trans_key *key)
450{
451 return hashtab_search(h: &p->filename_trans, key, key_params: filenametr_key_params);
452}
453
454static u32 rangetr_hash(const void *k)
455{
456 const struct range_trans *key = k;
457
458 return key->source_type + (key->target_type << 3) +
459 (key->target_class << 5);
460}
461
462static int rangetr_cmp(const void *k1, const void *k2)
463{
464 const struct range_trans *key1 = k1, *key2 = k2;
465 int v;
466
467 v = key1->source_type - key2->source_type;
468 if (v)
469 return v;
470
471 v = key1->target_type - key2->target_type;
472 if (v)
473 return v;
474
475 v = key1->target_class - key2->target_class;
476
477 return v;
478}
479
480static const struct hashtab_key_params rangetr_key_params = {
481 .hash = rangetr_hash,
482 .cmp = rangetr_cmp,
483};
484
485struct mls_range *policydb_rangetr_search(struct policydb *p,
486 struct range_trans *key)
487{
488 return hashtab_search(h: &p->range_tr, key, key_params: rangetr_key_params);
489}
490
491static u32 role_trans_hash(const void *k)
492{
493 const struct role_trans_key *key = k;
494
495 return jhash_3words(a: key->role, b: key->type,
496 c: (u32)key->tclass << 16 | key->tclass, initval: 0);
497}
498
499static int role_trans_cmp(const void *k1, const void *k2)
500{
501 const struct role_trans_key *key1 = k1, *key2 = k2;
502 int v;
503
504 v = key1->role - key2->role;
505 if (v)
506 return v;
507
508 v = key1->type - key2->type;
509 if (v)
510 return v;
511
512 return key1->tclass - key2->tclass;
513}
514
515static const struct hashtab_key_params roletr_key_params = {
516 .hash = role_trans_hash,
517 .cmp = role_trans_cmp,
518};
519
520struct role_trans_datum *policydb_roletr_search(struct policydb *p,
521 struct role_trans_key *key)
522{
523 return hashtab_search(h: &p->role_tr, key, key_params: roletr_key_params);
524}
525
526/*
527 * Initialize a policy database structure.
528 */
529static void policydb_init(struct policydb *p)
530{
531 memset(s: p, c: 0, n: sizeof(*p));
532
533 avtab_init(h: &p->te_avtab);
534 cond_policydb_init(p);
535
536 ebitmap_init(e: &p->filename_trans_ttypes);
537 ebitmap_init(e: &p->policycaps);
538 ebitmap_init(e: &p->permissive_map);
539 ebitmap_init(e: &p->neveraudit_map);
540}
541
542/*
543 * The following *_index functions are used to
544 * define the val_to_name and val_to_struct arrays
545 * in a policy database structure. The val_to_name
546 * arrays are used when converting security context
547 * structures into string representations. The
548 * val_to_struct arrays are used when the attributes
549 * of a class, role, or user are needed.
550 */
551
552static int common_index(void *key, void *datum, void *datap)
553{
554 struct policydb *p;
555 struct common_datum *comdatum;
556
557 comdatum = datum;
558 p = datap;
559 if (!comdatum->value || comdatum->value > p->p_commons.nprim)
560 return -EINVAL;
561
562 p->sym_val_to_name[SYM_COMMONS][comdatum->value - 1] = key;
563
564 return 0;
565}
566
567static int class_index(void *key, void *datum, void *datap)
568{
569 struct policydb *p;
570 struct class_datum *cladatum;
571
572 cladatum = datum;
573 p = datap;
574 if (!cladatum->value || cladatum->value > p->p_classes.nprim)
575 return -EINVAL;
576
577 p->sym_val_to_name[SYM_CLASSES][cladatum->value - 1] = key;
578 p->class_val_to_struct[cladatum->value - 1] = cladatum;
579 return 0;
580}
581
582static int role_index(void *key, void *datum, void *datap)
583{
584 struct policydb *p;
585 struct role_datum *role;
586
587 role = datum;
588 p = datap;
589 if (!role->value || role->value > p->p_roles.nprim ||
590 role->bounds > p->p_roles.nprim)
591 return -EINVAL;
592
593 p->sym_val_to_name[SYM_ROLES][role->value - 1] = key;
594 p->role_val_to_struct[role->value - 1] = role;
595 return 0;
596}
597
598static int type_index(void *key, void *datum, void *datap)
599{
600 struct policydb *p;
601 struct type_datum *typdatum;
602
603 typdatum = datum;
604 p = datap;
605
606 if (typdatum->primary) {
607 if (!typdatum->value || typdatum->value > p->p_types.nprim ||
608 typdatum->bounds > p->p_types.nprim)
609 return -EINVAL;
610 p->sym_val_to_name[SYM_TYPES][typdatum->value - 1] = key;
611 p->type_val_to_struct[typdatum->value - 1] = typdatum;
612 }
613
614 return 0;
615}
616
617static int user_index(void *key, void *datum, void *datap)
618{
619 struct policydb *p;
620 struct user_datum *usrdatum;
621
622 usrdatum = datum;
623 p = datap;
624 if (!usrdatum->value || usrdatum->value > p->p_users.nprim ||
625 usrdatum->bounds > p->p_users.nprim)
626 return -EINVAL;
627
628 p->sym_val_to_name[SYM_USERS][usrdatum->value - 1] = key;
629 p->user_val_to_struct[usrdatum->value - 1] = usrdatum;
630 return 0;
631}
632
633static int sens_index(void *key, void *datum, void *datap)
634{
635 struct policydb *p;
636 struct level_datum *levdatum;
637
638 levdatum = datum;
639 p = datap;
640
641 if (!levdatum->isalias) {
642 if (!levdatum->level.sens ||
643 levdatum->level.sens > p->p_levels.nprim)
644 return -EINVAL;
645
646 p->sym_val_to_name[SYM_LEVELS][levdatum->level.sens - 1] = key;
647 }
648
649 return 0;
650}
651
652static int cat_index(void *key, void *datum, void *datap)
653{
654 struct policydb *p;
655 struct cat_datum *catdatum;
656
657 catdatum = datum;
658 p = datap;
659
660 if (!catdatum->isalias) {
661 if (!catdatum->value || catdatum->value > p->p_cats.nprim)
662 return -EINVAL;
663
664 p->sym_val_to_name[SYM_CATS][catdatum->value - 1] = key;
665 }
666
667 return 0;
668}
669
670/* clang-format off */
671static int (*const index_f[SYM_NUM])(void *key, void *datum, void *datap) = {
672 common_index,
673 class_index,
674 role_index,
675 type_index,
676 user_index,
677 cond_index_bool,
678 sens_index,
679 cat_index,
680};
681/* clang-format on */
682
683#ifdef CONFIG_SECURITY_SELINUX_DEBUG
684static void hash_eval(struct hashtab *h, const char *hash_name,
685 const char *hash_details)
686{
687 struct hashtab_info info;
688
689 hashtab_stat(h, &info);
690 pr_debug(
691 "SELinux: %s%s%s: %d entries and %d/%d buckets used, longest chain length %d, sum of chain length^2 %llu\n",
692 hash_name, hash_details ? "@" : "", hash_details ?: "", h->nel,
693 info.slots_used, h->size, info.max_chain_len,
694 info.chain2_len_sum);
695}
696
697static void symtab_hash_eval(struct symtab *s)
698{
699 int i;
700
701 for (i = 0; i < SYM_NUM; i++)
702 hash_eval(&s[i].table, symtab_name[i], NULL);
703}
704
705#else
706static inline void hash_eval(struct hashtab *h, const char *hash_name,
707 const char *hash_details)
708{
709}
710static inline void symtab_hash_eval(struct symtab *s)
711{
712}
713#endif /* CONFIG_SECURITY_SELINUX_DEBUG */
714
715/*
716 * Define the other val_to_name and val_to_struct arrays
717 * in a policy database structure.
718 *
719 * Caller must clean up on failure.
720 */
721static int policydb_index(struct policydb *p)
722{
723 int i, rc;
724
725 if (p->mls_enabled)
726 pr_debug(
727 "SELinux: %d users, %d roles, %d types, %d bools, %d sens, %d cats\n",
728 p->p_users.nprim, p->p_roles.nprim, p->p_types.nprim,
729 p->p_bools.nprim, p->p_levels.nprim, p->p_cats.nprim);
730 else
731 pr_debug("SELinux: %d users, %d roles, %d types, %d bools\n",
732 p->p_users.nprim, p->p_roles.nprim, p->p_types.nprim,
733 p->p_bools.nprim);
734
735 pr_debug("SELinux: %d classes, %d rules\n", p->p_classes.nprim,
736 p->te_avtab.nel);
737
738 avtab_hash_eval(h: &p->te_avtab, tag: "rules");
739 symtab_hash_eval(s: p->symtab);
740
741 p->class_val_to_struct = kcalloc(p->p_classes.nprim,
742 sizeof(*p->class_val_to_struct),
743 GFP_KERNEL);
744 if (!p->class_val_to_struct)
745 return -ENOMEM;
746
747 p->role_val_to_struct = kcalloc(
748 p->p_roles.nprim, sizeof(*p->role_val_to_struct), GFP_KERNEL);
749 if (!p->role_val_to_struct)
750 return -ENOMEM;
751
752 p->user_val_to_struct = kcalloc(
753 p->p_users.nprim, sizeof(*p->user_val_to_struct), GFP_KERNEL);
754 if (!p->user_val_to_struct)
755 return -ENOMEM;
756
757 p->type_val_to_struct = kvcalloc(
758 p->p_types.nprim, sizeof(*p->type_val_to_struct), GFP_KERNEL);
759 if (!p->type_val_to_struct)
760 return -ENOMEM;
761
762 rc = cond_init_bool_indexes(p);
763 if (rc)
764 goto out;
765
766 for (i = 0; i < SYM_NUM; i++) {
767 p->sym_val_to_name[i] = kvcalloc(p->symtab[i].nprim,
768 sizeof(char *), GFP_KERNEL);
769 if (!p->sym_val_to_name[i])
770 return -ENOMEM;
771
772 rc = hashtab_map(h: &p->symtab[i].table, apply: index_f[i], args: p);
773 if (rc)
774 goto out;
775 }
776 rc = 0;
777out:
778 return rc;
779}
780
781/*
782 * Free any memory allocated by a policy database structure.
783 */
784void policydb_destroy(struct policydb *p)
785{
786 struct ocontext *c, *ctmp;
787 struct genfs *g, *gtmp;
788 u32 i;
789 struct role_allow *ra, *lra = NULL;
790
791 for (i = 0; i < SYM_NUM; i++) {
792 cond_resched();
793 hashtab_map(h: &p->symtab[i].table, apply: destroy_f[i], NULL);
794 hashtab_destroy(h: &p->symtab[i].table);
795 }
796
797 for (i = 0; i < SYM_NUM; i++)
798 kvfree(addr: p->sym_val_to_name[i]);
799
800 kfree(objp: p->class_val_to_struct);
801 kfree(objp: p->role_val_to_struct);
802 kfree(objp: p->user_val_to_struct);
803 kvfree(addr: p->type_val_to_struct);
804
805 avtab_destroy(h: &p->te_avtab);
806
807 for (i = 0; i < OCON_NUM; i++) {
808 cond_resched();
809 c = p->ocontexts[i];
810 while (c) {
811 ctmp = c;
812 c = c->next;
813 ocontext_destroy(c: ctmp, i);
814 }
815 p->ocontexts[i] = NULL;
816 }
817
818 g = p->genfs;
819 while (g) {
820 cond_resched();
821 kfree(objp: g->fstype);
822 c = g->head;
823 while (c) {
824 ctmp = c;
825 c = c->next;
826 ocontext_destroy(c: ctmp, OCON_FSUSE);
827 }
828 gtmp = g;
829 g = g->next;
830 kfree(objp: gtmp);
831 }
832 p->genfs = NULL;
833
834 cond_policydb_destroy(p);
835
836 hashtab_map(h: &p->role_tr, apply: role_tr_destroy, NULL);
837 hashtab_destroy(h: &p->role_tr);
838
839 for (ra = p->role_allow; ra; ra = ra->next) {
840 cond_resched();
841 kfree(objp: lra);
842 lra = ra;
843 }
844 kfree(objp: lra);
845
846 hashtab_map(h: &p->filename_trans, apply: filenametr_destroy, NULL);
847 hashtab_destroy(h: &p->filename_trans);
848
849 hashtab_map(h: &p->range_tr, apply: range_tr_destroy, NULL);
850 hashtab_destroy(h: &p->range_tr);
851
852 if (p->type_attr_map_array) {
853 for (i = 0; i < p->p_types.nprim; i++)
854 ebitmap_destroy(e: &p->type_attr_map_array[i]);
855 kvfree(addr: p->type_attr_map_array);
856 }
857
858 ebitmap_destroy(e: &p->filename_trans_ttypes);
859 ebitmap_destroy(e: &p->policycaps);
860 ebitmap_destroy(e: &p->permissive_map);
861 ebitmap_destroy(e: &p->neveraudit_map);
862}
863
864/*
865 * Load the initial SIDs specified in a policy database
866 * structure into a SID table.
867 */
868int policydb_load_isids(struct policydb *p, struct sidtab *s)
869{
870 struct ocontext *head, *c;
871 bool isid_init;
872 int rc;
873
874 rc = sidtab_init(s);
875 if (rc) {
876 pr_err("SELinux: out of memory on SID table init\n");
877 return rc;
878 }
879
880 isid_init = ebitmap_get_bit(e: &p->policycaps,
881 bit: POLICYDB_CAP_USERSPACE_INITIAL_CONTEXT);
882
883 head = p->ocontexts[OCON_ISID];
884 for (c = head; c; c = c->next) {
885 u32 sid = c->sid[0];
886 const char *name = security_get_initial_sid_context(sid);
887
888 if (sid == SECSID_NULL) {
889 pr_err("SELinux: SID 0 was assigned a context.\n");
890 sidtab_destroy(s);
891 return -EINVAL;
892 }
893
894 /* Ignore initial SIDs unused by this kernel. */
895 if (!name)
896 continue;
897
898 /*
899 * Also ignore SECINITSID_INIT if the policy doesn't declare
900 * support for it
901 */
902 if (sid == SECINITSID_INIT && !isid_init)
903 continue;
904
905 rc = sidtab_set_initial(s, sid, context: &c->context[0]);
906 if (rc) {
907 pr_err("SELinux: unable to load initial SID %s.\n",
908 name);
909 sidtab_destroy(s);
910 return rc;
911 }
912
913 /*
914 * If the policy doesn't support the "userspace_initial_context"
915 * capability, set SECINITSID_INIT to the same context as
916 * SECINITSID_KERNEL. This ensures the same behavior as before
917 * the reintroduction of SECINITSID_INIT, where all tasks
918 * started before policy load would initially get the context
919 * corresponding to SECINITSID_KERNEL.
920 */
921 if (sid == SECINITSID_KERNEL && !isid_init) {
922 rc = sidtab_set_initial(s, SECINITSID_INIT,
923 context: &c->context[0]);
924 if (rc) {
925 pr_err("SELinux: unable to load initial SID %s.\n",
926 name);
927 sidtab_destroy(s);
928 return rc;
929 }
930 }
931 }
932 return 0;
933}
934
935int policydb_class_isvalid(struct policydb *p, unsigned int class)
936{
937 if (!class || class > p->p_classes.nprim)
938 return 0;
939 return 1;
940}
941
942int policydb_role_isvalid(struct policydb *p, unsigned int role)
943{
944 if (!role || role > p->p_roles.nprim)
945 return 0;
946 return 1;
947}
948
949int policydb_type_isvalid(struct policydb *p, unsigned int type)
950{
951 if (!type || type > p->p_types.nprim)
952 return 0;
953 return 1;
954}
955
956/*
957 * Return 1 if the fields in the security context
958 * structure `c' are valid. Return 0 otherwise.
959 */
960int policydb_context_isvalid(struct policydb *p, struct context *c)
961{
962 struct role_datum *role;
963 struct user_datum *usrdatum;
964
965 if (!c->role || c->role > p->p_roles.nprim)
966 return 0;
967
968 if (!c->user || c->user > p->p_users.nprim)
969 return 0;
970
971 if (!c->type || c->type > p->p_types.nprim)
972 return 0;
973
974 if (c->role != OBJECT_R_VAL) {
975 /*
976 * Role must be authorized for the type.
977 */
978 role = p->role_val_to_struct[c->role - 1];
979 if (!role || !ebitmap_get_bit(e: &role->types, bit: c->type - 1))
980 /* role may not be associated with type */
981 return 0;
982
983 /*
984 * User must be authorized for the role.
985 */
986 usrdatum = p->user_val_to_struct[c->user - 1];
987 if (!usrdatum)
988 return 0;
989
990 if (!ebitmap_get_bit(e: &usrdatum->roles, bit: c->role - 1))
991 /* user may not be associated with role */
992 return 0;
993 }
994
995 if (!mls_context_isvalid(p, c))
996 return 0;
997
998 return 1;
999}
1000
1001/*
1002 * Read a MLS range structure from a policydb binary
1003 * representation file.
1004 */
1005static int mls_read_range_helper(struct mls_range *r, struct policy_file *fp)
1006{
1007 __le32 buf[2];
1008 u32 items;
1009 int rc;
1010
1011 rc = next_entry(buf, fp, bytes: sizeof(u32));
1012 if (rc)
1013 goto out;
1014
1015 rc = -EINVAL;
1016 items = le32_to_cpu(buf[0]);
1017 if (items > ARRAY_SIZE(buf)) {
1018 pr_err("SELinux: mls: range overflow\n");
1019 goto out;
1020 }
1021
1022 rc = next_entry(buf, fp, bytes: sizeof(u32) * items);
1023 if (rc) {
1024 pr_err("SELinux: mls: truncated range\n");
1025 goto out;
1026 }
1027
1028 r->level[0].sens = le32_to_cpu(buf[0]);
1029 if (items > 1)
1030 r->level[1].sens = le32_to_cpu(buf[1]);
1031 else
1032 r->level[1].sens = r->level[0].sens;
1033
1034 rc = ebitmap_read(e: &r->level[0].cat, fp);
1035 if (rc) {
1036 pr_err("SELinux: mls: error reading low categories\n");
1037 goto out;
1038 }
1039 if (items > 1) {
1040 rc = ebitmap_read(e: &r->level[1].cat, fp);
1041 if (rc) {
1042 pr_err("SELinux: mls: error reading high categories\n");
1043 goto bad_high;
1044 }
1045 } else {
1046 rc = ebitmap_cpy(dst: &r->level[1].cat, src: &r->level[0].cat);
1047 if (rc) {
1048 pr_err("SELinux: mls: out of memory\n");
1049 goto bad_high;
1050 }
1051 }
1052
1053 return 0;
1054bad_high:
1055 ebitmap_destroy(e: &r->level[0].cat);
1056out:
1057 return rc;
1058}
1059
1060/*
1061 * Read and validate a security context structure
1062 * from a policydb binary representation file.
1063 */
1064static int context_read_and_validate(struct context *c, struct policydb *p,
1065 struct policy_file *fp)
1066{
1067 __le32 buf[3];
1068 int rc;
1069
1070 rc = next_entry(buf, fp, bytes: sizeof buf);
1071 if (rc) {
1072 pr_err("SELinux: context truncated\n");
1073 goto out;
1074 }
1075 c->user = le32_to_cpu(buf[0]);
1076 c->role = le32_to_cpu(buf[1]);
1077 c->type = le32_to_cpu(buf[2]);
1078 if (p->policyvers >= POLICYDB_VERSION_MLS) {
1079 rc = mls_read_range_helper(r: &c->range, fp);
1080 if (rc) {
1081 pr_err("SELinux: error reading MLS range of context\n");
1082 goto out;
1083 }
1084 }
1085
1086 rc = -EINVAL;
1087 if (!policydb_context_isvalid(p, c)) {
1088 pr_err("SELinux: invalid security context\n");
1089 context_destroy(c);
1090 goto out;
1091 }
1092 rc = 0;
1093out:
1094 return rc;
1095}
1096
1097/*
1098 * The following *_read functions are used to
1099 * read the symbol data from a policy database
1100 * binary representation file.
1101 */
1102
1103int str_read(char **strp, gfp_t flags, struct policy_file *fp, u32 len)
1104{
1105 int rc;
1106 char *str;
1107
1108 if ((len == 0) || (len == (u32)-1))
1109 return -EINVAL;
1110
1111 str = kmalloc(len + 1, flags | __GFP_NOWARN);
1112 if (!str)
1113 return -ENOMEM;
1114
1115 rc = next_entry(buf: str, fp, bytes: len);
1116 if (rc) {
1117 kfree(objp: str);
1118 return rc;
1119 }
1120
1121 str[len] = '\0';
1122 *strp = str;
1123 return 0;
1124}
1125
1126static int perm_read(struct policydb *p, struct symtab *s, struct policy_file *fp)
1127{
1128 char *key = NULL;
1129 struct perm_datum *perdatum;
1130 int rc;
1131 __le32 buf[2];
1132 u32 len;
1133
1134 perdatum = kzalloc(sizeof(*perdatum), GFP_KERNEL);
1135 if (!perdatum)
1136 return -ENOMEM;
1137
1138 rc = next_entry(buf, fp, bytes: sizeof buf);
1139 if (rc)
1140 goto bad;
1141
1142 len = le32_to_cpu(buf[0]);
1143 perdatum->value = le32_to_cpu(buf[1]);
1144
1145 rc = str_read(strp: &key, GFP_KERNEL, fp, len);
1146 if (rc)
1147 goto bad;
1148
1149 rc = symtab_insert(s, name: key, datum: perdatum);
1150 if (rc)
1151 goto bad;
1152
1153 return 0;
1154bad:
1155 perm_destroy(key, datum: perdatum, NULL);
1156 return rc;
1157}
1158
1159static int common_read(struct policydb *p, struct symtab *s, struct policy_file *fp)
1160{
1161 char *key = NULL;
1162 struct common_datum *comdatum;
1163 __le32 buf[4];
1164 u32 i, len, nel;
1165 int rc;
1166
1167 comdatum = kzalloc(sizeof(*comdatum), GFP_KERNEL);
1168 if (!comdatum)
1169 return -ENOMEM;
1170
1171 rc = next_entry(buf, fp, bytes: sizeof buf);
1172 if (rc)
1173 goto bad;
1174
1175 len = le32_to_cpu(buf[0]);
1176 comdatum->value = le32_to_cpu(buf[1]);
1177 nel = le32_to_cpu(buf[3]);
1178
1179 rc = symtab_init(s: &comdatum->permissions, size: nel);
1180 if (rc)
1181 goto bad;
1182 comdatum->permissions.nprim = le32_to_cpu(buf[2]);
1183
1184 rc = str_read(strp: &key, GFP_KERNEL, fp, len);
1185 if (rc)
1186 goto bad;
1187
1188 for (i = 0; i < nel; i++) {
1189 rc = perm_read(p, s: &comdatum->permissions, fp);
1190 if (rc)
1191 goto bad;
1192 }
1193
1194 hash_eval(h: &comdatum->permissions.table, hash_name: "common_permissions", hash_details: key);
1195
1196 rc = symtab_insert(s, name: key, datum: comdatum);
1197 if (rc)
1198 goto bad;
1199 return 0;
1200bad:
1201 common_destroy(key, datum: comdatum, NULL);
1202 return rc;
1203}
1204
1205static void type_set_init(struct type_set *t)
1206{
1207 ebitmap_init(e: &t->types);
1208 ebitmap_init(e: &t->negset);
1209}
1210
1211static int type_set_read(struct type_set *t, struct policy_file *fp)
1212{
1213 __le32 buf[1];
1214 int rc;
1215
1216 if (ebitmap_read(e: &t->types, fp))
1217 return -EINVAL;
1218 if (ebitmap_read(e: &t->negset, fp))
1219 return -EINVAL;
1220
1221 rc = next_entry(buf, fp, bytes: sizeof(u32));
1222 if (rc < 0)
1223 return -EINVAL;
1224 t->flags = le32_to_cpu(buf[0]);
1225
1226 return 0;
1227}
1228
1229static int read_cons_helper(struct policydb *p, struct constraint_node **nodep,
1230 u32 ncons, int allowxtarget, struct policy_file *fp)
1231{
1232 struct constraint_node *c, *lc;
1233 struct constraint_expr *e, *le;
1234 __le32 buf[3];
1235 u32 i, j, nexpr;
1236 int rc, depth;
1237
1238 lc = NULL;
1239 for (i = 0; i < ncons; i++) {
1240 c = kzalloc(sizeof(*c), GFP_KERNEL);
1241 if (!c)
1242 return -ENOMEM;
1243
1244 if (lc)
1245 lc->next = c;
1246 else
1247 *nodep = c;
1248
1249 rc = next_entry(buf, fp, bytes: (sizeof(u32) * 2));
1250 if (rc)
1251 return rc;
1252 c->permissions = le32_to_cpu(buf[0]);
1253 nexpr = le32_to_cpu(buf[1]);
1254 le = NULL;
1255 depth = -1;
1256 for (j = 0; j < nexpr; j++) {
1257 e = kzalloc(sizeof(*e), GFP_KERNEL);
1258 if (!e)
1259 return -ENOMEM;
1260
1261 if (le)
1262 le->next = e;
1263 else
1264 c->expr = e;
1265
1266 rc = next_entry(buf, fp, bytes: (sizeof(u32) * 3));
1267 if (rc)
1268 return rc;
1269 e->expr_type = le32_to_cpu(buf[0]);
1270 e->attr = le32_to_cpu(buf[1]);
1271 e->op = le32_to_cpu(buf[2]);
1272
1273 switch (e->expr_type) {
1274 case CEXPR_NOT:
1275 if (depth < 0)
1276 return -EINVAL;
1277 break;
1278 case CEXPR_AND:
1279 case CEXPR_OR:
1280 if (depth < 1)
1281 return -EINVAL;
1282 depth--;
1283 break;
1284 case CEXPR_ATTR:
1285 if (depth == (CEXPR_MAXDEPTH - 1))
1286 return -EINVAL;
1287 depth++;
1288 break;
1289 case CEXPR_NAMES:
1290 if (!allowxtarget && (e->attr & CEXPR_XTARGET))
1291 return -EINVAL;
1292 if (depth == (CEXPR_MAXDEPTH - 1))
1293 return -EINVAL;
1294 depth++;
1295 rc = ebitmap_read(e: &e->names, fp);
1296 if (rc)
1297 return rc;
1298 if (p->policyvers >=
1299 POLICYDB_VERSION_CONSTRAINT_NAMES) {
1300 e->type_names =
1301 kzalloc(sizeof(*e->type_names),
1302 GFP_KERNEL);
1303 if (!e->type_names)
1304 return -ENOMEM;
1305 type_set_init(t: e->type_names);
1306 rc = type_set_read(t: e->type_names, fp);
1307 if (rc)
1308 return rc;
1309 }
1310 break;
1311 default:
1312 return -EINVAL;
1313 }
1314 le = e;
1315 }
1316 if (depth != 0)
1317 return -EINVAL;
1318 lc = c;
1319 }
1320
1321 return 0;
1322}
1323
1324static int class_read(struct policydb *p, struct symtab *s, struct policy_file *fp)
1325{
1326 char *key = NULL;
1327 struct class_datum *cladatum;
1328 __le32 buf[6];
1329 u32 i, len, len2, ncons, nel;
1330 int rc;
1331
1332 cladatum = kzalloc(sizeof(*cladatum), GFP_KERNEL);
1333 if (!cladatum)
1334 return -ENOMEM;
1335
1336 rc = next_entry(buf, fp, bytes: sizeof(u32) * 6);
1337 if (rc)
1338 goto bad;
1339
1340 len = le32_to_cpu(buf[0]);
1341 len2 = le32_to_cpu(buf[1]);
1342 cladatum->value = le32_to_cpu(buf[2]);
1343 nel = le32_to_cpu(buf[4]);
1344
1345 rc = symtab_init(s: &cladatum->permissions, size: nel);
1346 if (rc)
1347 goto bad;
1348 cladatum->permissions.nprim = le32_to_cpu(buf[3]);
1349
1350 ncons = le32_to_cpu(buf[5]);
1351
1352 rc = str_read(strp: &key, GFP_KERNEL, fp, len);
1353 if (rc)
1354 goto bad;
1355
1356 if (len2) {
1357 rc = str_read(strp: &cladatum->comkey, GFP_KERNEL, fp, len: len2);
1358 if (rc)
1359 goto bad;
1360
1361 rc = -EINVAL;
1362 cladatum->comdatum =
1363 symtab_search(s: &p->p_commons, name: cladatum->comkey);
1364 if (!cladatum->comdatum) {
1365 pr_err("SELinux: unknown common %s\n",
1366 cladatum->comkey);
1367 goto bad;
1368 }
1369 }
1370 for (i = 0; i < nel; i++) {
1371 rc = perm_read(p, s: &cladatum->permissions, fp);
1372 if (rc)
1373 goto bad;
1374 }
1375
1376 hash_eval(h: &cladatum->permissions.table, hash_name: "class_permissions", hash_details: key);
1377
1378 rc = read_cons_helper(p, nodep: &cladatum->constraints, ncons, allowxtarget: 0, fp);
1379 if (rc)
1380 goto bad;
1381
1382 if (p->policyvers >= POLICYDB_VERSION_VALIDATETRANS) {
1383 /* grab the validatetrans rules */
1384 rc = next_entry(buf, fp, bytes: sizeof(u32));
1385 if (rc)
1386 goto bad;
1387 ncons = le32_to_cpu(buf[0]);
1388 rc = read_cons_helper(p, nodep: &cladatum->validatetrans, ncons, allowxtarget: 1,
1389 fp);
1390 if (rc)
1391 goto bad;
1392 }
1393
1394 if (p->policyvers >= POLICYDB_VERSION_NEW_OBJECT_DEFAULTS) {
1395 rc = next_entry(buf, fp, bytes: sizeof(u32) * 3);
1396 if (rc)
1397 goto bad;
1398
1399 cladatum->default_user = le32_to_cpu(buf[0]);
1400 cladatum->default_role = le32_to_cpu(buf[1]);
1401 cladatum->default_range = le32_to_cpu(buf[2]);
1402 }
1403
1404 if (p->policyvers >= POLICYDB_VERSION_DEFAULT_TYPE) {
1405 rc = next_entry(buf, fp, bytes: sizeof(u32) * 1);
1406 if (rc)
1407 goto bad;
1408 cladatum->default_type = le32_to_cpu(buf[0]);
1409 }
1410
1411 rc = symtab_insert(s, name: key, datum: cladatum);
1412 if (rc)
1413 goto bad;
1414
1415 return 0;
1416bad:
1417 cls_destroy(key, datum: cladatum, NULL);
1418 return rc;
1419}
1420
1421static int role_read(struct policydb *p, struct symtab *s, struct policy_file *fp)
1422{
1423 char *key = NULL;
1424 struct role_datum *role;
1425 int rc;
1426 unsigned int to_read = 2;
1427 __le32 buf[3];
1428 u32 len;
1429
1430 role = kzalloc(sizeof(*role), GFP_KERNEL);
1431 if (!role)
1432 return -ENOMEM;
1433
1434 if (p->policyvers >= POLICYDB_VERSION_BOUNDARY)
1435 to_read = 3;
1436
1437 rc = next_entry(buf, fp, bytes: sizeof(buf[0]) * to_read);
1438 if (rc)
1439 goto bad;
1440
1441 len = le32_to_cpu(buf[0]);
1442 role->value = le32_to_cpu(buf[1]);
1443 if (p->policyvers >= POLICYDB_VERSION_BOUNDARY)
1444 role->bounds = le32_to_cpu(buf[2]);
1445
1446 rc = str_read(strp: &key, GFP_KERNEL, fp, len);
1447 if (rc)
1448 goto bad;
1449
1450 rc = ebitmap_read(e: &role->dominates, fp);
1451 if (rc)
1452 goto bad;
1453
1454 rc = ebitmap_read(e: &role->types, fp);
1455 if (rc)
1456 goto bad;
1457
1458 if (strcmp(key, OBJECT_R) == 0) {
1459 rc = -EINVAL;
1460 if (role->value != OBJECT_R_VAL) {
1461 pr_err("SELinux: Role %s has wrong value %d\n",
1462 OBJECT_R, role->value);
1463 goto bad;
1464 }
1465 rc = 0;
1466 goto bad;
1467 }
1468
1469 rc = symtab_insert(s, name: key, datum: role);
1470 if (rc)
1471 goto bad;
1472 return 0;
1473bad:
1474 role_destroy(key, datum: role, NULL);
1475 return rc;
1476}
1477
1478static int type_read(struct policydb *p, struct symtab *s, struct policy_file *fp)
1479{
1480 char *key = NULL;
1481 struct type_datum *typdatum;
1482 int rc;
1483 unsigned int to_read = 3;
1484 __le32 buf[4];
1485 u32 len;
1486
1487 typdatum = kzalloc(sizeof(*typdatum), GFP_KERNEL);
1488 if (!typdatum)
1489 return -ENOMEM;
1490
1491 if (p->policyvers >= POLICYDB_VERSION_BOUNDARY)
1492 to_read = 4;
1493
1494 rc = next_entry(buf, fp, bytes: sizeof(buf[0]) * to_read);
1495 if (rc)
1496 goto bad;
1497
1498 len = le32_to_cpu(buf[0]);
1499 typdatum->value = le32_to_cpu(buf[1]);
1500 if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) {
1501 u32 prop = le32_to_cpu(buf[2]);
1502
1503 if (prop & TYPEDATUM_PROPERTY_PRIMARY)
1504 typdatum->primary = 1;
1505 if (prop & TYPEDATUM_PROPERTY_ATTRIBUTE)
1506 typdatum->attribute = 1;
1507
1508 typdatum->bounds = le32_to_cpu(buf[3]);
1509 } else {
1510 typdatum->primary = le32_to_cpu(buf[2]);
1511 }
1512
1513 rc = str_read(strp: &key, GFP_KERNEL, fp, len);
1514 if (rc)
1515 goto bad;
1516
1517 rc = symtab_insert(s, name: key, datum: typdatum);
1518 if (rc)
1519 goto bad;
1520 return 0;
1521bad:
1522 type_destroy(key, datum: typdatum, NULL);
1523 return rc;
1524}
1525
1526/*
1527 * Read a MLS level structure from a policydb binary
1528 * representation file.
1529 */
1530static int mls_read_level(struct mls_level *lp, struct policy_file *fp)
1531{
1532 __le32 buf[1];
1533 int rc;
1534
1535 memset(s: lp, c: 0, n: sizeof(*lp));
1536
1537 rc = next_entry(buf, fp, bytes: sizeof buf);
1538 if (rc) {
1539 pr_err("SELinux: mls: truncated level\n");
1540 return rc;
1541 }
1542 lp->sens = le32_to_cpu(buf[0]);
1543
1544 rc = ebitmap_read(e: &lp->cat, fp);
1545 if (rc) {
1546 pr_err("SELinux: mls: error reading level categories\n");
1547 return rc;
1548 }
1549 return 0;
1550}
1551
1552static int user_read(struct policydb *p, struct symtab *s, struct policy_file *fp)
1553{
1554 char *key = NULL;
1555 struct user_datum *usrdatum;
1556 int rc;
1557 unsigned int to_read = 2;
1558 __le32 buf[3];
1559 u32 len;
1560
1561 usrdatum = kzalloc(sizeof(*usrdatum), GFP_KERNEL);
1562 if (!usrdatum)
1563 return -ENOMEM;
1564
1565 if (p->policyvers >= POLICYDB_VERSION_BOUNDARY)
1566 to_read = 3;
1567
1568 rc = next_entry(buf, fp, bytes: sizeof(buf[0]) * to_read);
1569 if (rc)
1570 goto bad;
1571
1572 len = le32_to_cpu(buf[0]);
1573 usrdatum->value = le32_to_cpu(buf[1]);
1574 if (p->policyvers >= POLICYDB_VERSION_BOUNDARY)
1575 usrdatum->bounds = le32_to_cpu(buf[2]);
1576
1577 rc = str_read(strp: &key, GFP_KERNEL, fp, len);
1578 if (rc)
1579 goto bad;
1580
1581 rc = ebitmap_read(e: &usrdatum->roles, fp);
1582 if (rc)
1583 goto bad;
1584
1585 if (p->policyvers >= POLICYDB_VERSION_MLS) {
1586 rc = mls_read_range_helper(r: &usrdatum->range, fp);
1587 if (rc)
1588 goto bad;
1589 rc = mls_read_level(lp: &usrdatum->dfltlevel, fp);
1590 if (rc)
1591 goto bad;
1592 }
1593
1594 rc = symtab_insert(s, name: key, datum: usrdatum);
1595 if (rc)
1596 goto bad;
1597 return 0;
1598bad:
1599 user_destroy(key, datum: usrdatum, NULL);
1600 return rc;
1601}
1602
1603static int sens_read(struct policydb *p, struct symtab *s, struct policy_file *fp)
1604{
1605 char *key = NULL;
1606 struct level_datum *levdatum;
1607 int rc;
1608 __le32 buf[2];
1609 u32 len;
1610
1611 levdatum = kzalloc(sizeof(*levdatum), GFP_KERNEL);
1612 if (!levdatum)
1613 return -ENOMEM;
1614
1615 rc = next_entry(buf, fp, bytes: sizeof buf);
1616 if (rc)
1617 goto bad;
1618
1619 len = le32_to_cpu(buf[0]);
1620 levdatum->isalias = le32_to_cpu(buf[1]);
1621
1622 rc = str_read(strp: &key, GFP_KERNEL, fp, len);
1623 if (rc)
1624 goto bad;
1625
1626 rc = mls_read_level(lp: &levdatum->level, fp);
1627 if (rc)
1628 goto bad;
1629
1630 rc = symtab_insert(s, name: key, datum: levdatum);
1631 if (rc)
1632 goto bad;
1633 return 0;
1634bad:
1635 sens_destroy(key, datum: levdatum, NULL);
1636 return rc;
1637}
1638
1639static int cat_read(struct policydb *p, struct symtab *s, struct policy_file *fp)
1640{
1641 char *key = NULL;
1642 struct cat_datum *catdatum;
1643 int rc;
1644 __le32 buf[3];
1645 u32 len;
1646
1647 catdatum = kzalloc(sizeof(*catdatum), GFP_KERNEL);
1648 if (!catdatum)
1649 return -ENOMEM;
1650
1651 rc = next_entry(buf, fp, bytes: sizeof buf);
1652 if (rc)
1653 goto bad;
1654
1655 len = le32_to_cpu(buf[0]);
1656 catdatum->value = le32_to_cpu(buf[1]);
1657 catdatum->isalias = le32_to_cpu(buf[2]);
1658
1659 rc = str_read(strp: &key, GFP_KERNEL, fp, len);
1660 if (rc)
1661 goto bad;
1662
1663 rc = symtab_insert(s, name: key, datum: catdatum);
1664 if (rc)
1665 goto bad;
1666 return 0;
1667bad:
1668 cat_destroy(key, datum: catdatum, NULL);
1669 return rc;
1670}
1671
1672/* clang-format off */
1673static int (*const read_f[SYM_NUM])(struct policydb *p, struct symtab *s,
1674 struct policy_file *fp) = {
1675 common_read,
1676 class_read,
1677 role_read,
1678 type_read,
1679 user_read,
1680 cond_read_bool,
1681 sens_read,
1682 cat_read,
1683};
1684/* clang-format on */
1685
1686static int user_bounds_sanity_check(void *key, void *datum, void *datap)
1687{
1688 struct user_datum *upper, *user;
1689 struct policydb *p = datap;
1690 int depth = 0;
1691
1692 upper = user = datum;
1693 while (upper->bounds) {
1694 struct ebitmap_node *node;
1695 u32 bit;
1696
1697 if (++depth == POLICYDB_BOUNDS_MAXDEPTH) {
1698 pr_err("SELinux: user %s: "
1699 "too deep or looped boundary\n",
1700 (char *)key);
1701 return -EINVAL;
1702 }
1703
1704 upper = p->user_val_to_struct[upper->bounds - 1];
1705 ebitmap_for_each_positive_bit(&user->roles, node, bit)
1706 {
1707 if (ebitmap_get_bit(e: &upper->roles, bit))
1708 continue;
1709
1710 pr_err("SELinux: boundary violated policy: "
1711 "user=%s role=%s bounds=%s\n",
1712 sym_name(p, SYM_USERS, user->value - 1),
1713 sym_name(p, SYM_ROLES, bit),
1714 sym_name(p, SYM_USERS, upper->value - 1));
1715
1716 return -EINVAL;
1717 }
1718 }
1719
1720 return 0;
1721}
1722
1723static int role_bounds_sanity_check(void *key, void *datum, void *datap)
1724{
1725 struct role_datum *upper, *role;
1726 struct policydb *p = datap;
1727 int depth = 0;
1728
1729 upper = role = datum;
1730 while (upper->bounds) {
1731 struct ebitmap_node *node;
1732 u32 bit;
1733
1734 if (++depth == POLICYDB_BOUNDS_MAXDEPTH) {
1735 pr_err("SELinux: role %s: "
1736 "too deep or looped bounds\n",
1737 (char *)key);
1738 return -EINVAL;
1739 }
1740
1741 upper = p->role_val_to_struct[upper->bounds - 1];
1742 ebitmap_for_each_positive_bit(&role->types, node, bit)
1743 {
1744 if (ebitmap_get_bit(e: &upper->types, bit))
1745 continue;
1746
1747 pr_err("SELinux: boundary violated policy: "
1748 "role=%s type=%s bounds=%s\n",
1749 sym_name(p, SYM_ROLES, role->value - 1),
1750 sym_name(p, SYM_TYPES, bit),
1751 sym_name(p, SYM_ROLES, upper->value - 1));
1752
1753 return -EINVAL;
1754 }
1755 }
1756
1757 return 0;
1758}
1759
1760static int type_bounds_sanity_check(void *key, void *datum, void *datap)
1761{
1762 struct type_datum *upper;
1763 struct policydb *p = datap;
1764 int depth = 0;
1765
1766 upper = datum;
1767 while (upper->bounds) {
1768 if (++depth == POLICYDB_BOUNDS_MAXDEPTH) {
1769 pr_err("SELinux: type %s: "
1770 "too deep or looped boundary\n",
1771 (char *)key);
1772 return -EINVAL;
1773 }
1774
1775 upper = p->type_val_to_struct[upper->bounds - 1];
1776 BUG_ON(!upper);
1777
1778 if (upper->attribute) {
1779 pr_err("SELinux: type %s: "
1780 "bounded by attribute %s\n",
1781 (char *)key,
1782 sym_name(p, SYM_TYPES, upper->value - 1));
1783 return -EINVAL;
1784 }
1785 }
1786
1787 return 0;
1788}
1789
1790static int policydb_bounds_sanity_check(struct policydb *p)
1791{
1792 int rc;
1793
1794 if (p->policyvers < POLICYDB_VERSION_BOUNDARY)
1795 return 0;
1796
1797 rc = hashtab_map(h: &p->p_users.table, apply: user_bounds_sanity_check, args: p);
1798 if (rc)
1799 return rc;
1800
1801 rc = hashtab_map(h: &p->p_roles.table, apply: role_bounds_sanity_check, args: p);
1802 if (rc)
1803 return rc;
1804
1805 rc = hashtab_map(h: &p->p_types.table, apply: type_bounds_sanity_check, args: p);
1806 if (rc)
1807 return rc;
1808
1809 return 0;
1810}
1811
1812u16 string_to_security_class(struct policydb *p, const char *name)
1813{
1814 struct class_datum *cladatum;
1815
1816 cladatum = symtab_search(s: &p->p_classes, name);
1817 if (!cladatum)
1818 return 0;
1819
1820 return cladatum->value;
1821}
1822
1823u32 string_to_av_perm(struct policydb *p, u16 tclass, const char *name)
1824{
1825 struct class_datum *cladatum;
1826 struct perm_datum *perdatum = NULL;
1827 struct common_datum *comdatum;
1828
1829 if (!tclass || tclass > p->p_classes.nprim)
1830 return 0;
1831
1832 cladatum = p->class_val_to_struct[tclass - 1];
1833 comdatum = cladatum->comdatum;
1834 if (comdatum)
1835 perdatum = symtab_search(s: &comdatum->permissions, name);
1836 if (!perdatum)
1837 perdatum = symtab_search(s: &cladatum->permissions, name);
1838 if (!perdatum)
1839 return 0;
1840
1841 return 1U << (perdatum->value - 1);
1842}
1843
1844static int range_read(struct policydb *p, struct policy_file *fp)
1845{
1846 struct range_trans *rt = NULL;
1847 struct mls_range *r = NULL;
1848 int rc;
1849 __le32 buf[2];
1850 u32 i, nel;
1851
1852 if (p->policyvers < POLICYDB_VERSION_MLS)
1853 return 0;
1854
1855 rc = next_entry(buf, fp, bytes: sizeof(u32));
1856 if (rc)
1857 return rc;
1858
1859 nel = le32_to_cpu(buf[0]);
1860
1861 rc = hashtab_init(h: &p->range_tr, nel_hint: nel);
1862 if (rc)
1863 return rc;
1864
1865 for (i = 0; i < nel; i++) {
1866 rc = -ENOMEM;
1867 rt = kzalloc(sizeof(*rt), GFP_KERNEL);
1868 if (!rt)
1869 goto out;
1870
1871 rc = next_entry(buf, fp, bytes: (sizeof(u32) * 2));
1872 if (rc)
1873 goto out;
1874
1875 rt->source_type = le32_to_cpu(buf[0]);
1876 rt->target_type = le32_to_cpu(buf[1]);
1877 if (p->policyvers >= POLICYDB_VERSION_RANGETRANS) {
1878 rc = next_entry(buf, fp, bytes: sizeof(u32));
1879 if (rc)
1880 goto out;
1881 rt->target_class = le32_to_cpu(buf[0]);
1882 } else
1883 rt->target_class = p->process_class;
1884
1885 rc = -EINVAL;
1886 if (!policydb_type_isvalid(p, type: rt->source_type) ||
1887 !policydb_type_isvalid(p, type: rt->target_type) ||
1888 !policydb_class_isvalid(p, class: rt->target_class))
1889 goto out;
1890
1891 rc = -ENOMEM;
1892 r = kzalloc(sizeof(*r), GFP_KERNEL);
1893 if (!r)
1894 goto out;
1895
1896 rc = mls_read_range_helper(r, fp);
1897 if (rc)
1898 goto out;
1899
1900 rc = -EINVAL;
1901 if (!mls_range_isvalid(p, r)) {
1902 pr_warn("SELinux: rangetrans: invalid range\n");
1903 goto out;
1904 }
1905
1906 rc = hashtab_insert(h: &p->range_tr, key: rt, datum: r, key_params: rangetr_key_params);
1907 if (rc)
1908 goto out;
1909
1910 rt = NULL;
1911 r = NULL;
1912 }
1913 hash_eval(h: &p->range_tr, hash_name: "rangetr", NULL);
1914 rc = 0;
1915out:
1916 kfree(objp: rt);
1917 kfree(objp: r);
1918 return rc;
1919}
1920
1921static int filename_trans_read_helper_compat(struct policydb *p, struct policy_file *fp)
1922{
1923 struct filename_trans_key key, *ft = NULL;
1924 struct filename_trans_datum *last, *datum = NULL;
1925 char *name = NULL;
1926 u32 len, stype, otype;
1927 __le32 buf[4];
1928 int rc;
1929
1930 /* length of the path component string */
1931 rc = next_entry(buf, fp, bytes: sizeof(u32));
1932 if (rc)
1933 return rc;
1934 len = le32_to_cpu(buf[0]);
1935
1936 /* path component string */
1937 rc = str_read(strp: &name, GFP_KERNEL, fp, len);
1938 if (rc)
1939 return rc;
1940
1941 rc = next_entry(buf, fp, bytes: sizeof(u32) * 4);
1942 if (rc)
1943 goto out;
1944
1945 stype = le32_to_cpu(buf[0]);
1946 key.ttype = le32_to_cpu(buf[1]);
1947 key.tclass = le32_to_cpu(buf[2]);
1948 key.name = name;
1949
1950 otype = le32_to_cpu(buf[3]);
1951
1952 last = NULL;
1953 datum = policydb_filenametr_search(p, key: &key);
1954 while (datum) {
1955 if (unlikely(ebitmap_get_bit(&datum->stypes, stype - 1))) {
1956 /* conflicting/duplicate rules are ignored */
1957 datum = NULL;
1958 rc = 0;
1959 goto out;
1960 }
1961 if (likely(datum->otype == otype))
1962 break;
1963 last = datum;
1964 datum = datum->next;
1965 }
1966 if (!datum) {
1967 rc = -ENOMEM;
1968 datum = kmalloc(sizeof(*datum), GFP_KERNEL);
1969 if (!datum)
1970 goto out;
1971
1972 ebitmap_init(e: &datum->stypes);
1973 datum->otype = otype;
1974 datum->next = NULL;
1975
1976 if (unlikely(last)) {
1977 last->next = datum;
1978 } else {
1979 rc = -ENOMEM;
1980 ft = kmemdup(&key, sizeof(key), GFP_KERNEL);
1981 if (!ft)
1982 goto out;
1983
1984 rc = hashtab_insert(h: &p->filename_trans, key: ft, datum,
1985 key_params: filenametr_key_params);
1986 if (rc)
1987 goto out;
1988 name = NULL;
1989
1990 rc = ebitmap_set_bit(e: &p->filename_trans_ttypes,
1991 bit: key.ttype, value: 1);
1992 if (rc)
1993 return rc;
1994 }
1995 }
1996 kfree(objp: name);
1997 return ebitmap_set_bit(e: &datum->stypes, bit: stype - 1, value: 1);
1998
1999out:
2000 kfree(objp: ft);
2001 kfree(objp: name);
2002 kfree(objp: datum);
2003 return rc;
2004}
2005
2006static int filename_trans_read_helper(struct policydb *p, struct policy_file *fp)
2007{
2008 struct filename_trans_key *ft = NULL;
2009 struct filename_trans_datum **dst, *datum, *first = NULL;
2010 char *name = NULL;
2011 u32 len, ttype, tclass, ndatum, i;
2012 __le32 buf[3];
2013 int rc;
2014
2015 /* length of the path component string */
2016 rc = next_entry(buf, fp, bytes: sizeof(u32));
2017 if (rc)
2018 return rc;
2019 len = le32_to_cpu(buf[0]);
2020
2021 /* path component string */
2022 rc = str_read(strp: &name, GFP_KERNEL, fp, len);
2023 if (rc)
2024 return rc;
2025
2026 rc = next_entry(buf, fp, bytes: sizeof(u32) * 3);
2027 if (rc)
2028 goto out;
2029
2030 ttype = le32_to_cpu(buf[0]);
2031 tclass = le32_to_cpu(buf[1]);
2032
2033 ndatum = le32_to_cpu(buf[2]);
2034 if (ndatum == 0) {
2035 pr_err("SELinux: Filename transition key with no datum\n");
2036 rc = -ENOENT;
2037 goto out;
2038 }
2039
2040 dst = &first;
2041 for (i = 0; i < ndatum; i++) {
2042 rc = -ENOMEM;
2043 datum = kmalloc(sizeof(*datum), GFP_KERNEL);
2044 if (!datum)
2045 goto out;
2046
2047 datum->next = NULL;
2048 *dst = datum;
2049
2050 /* ebitmap_read() will at least init the bitmap */
2051 rc = ebitmap_read(e: &datum->stypes, fp);
2052 if (rc)
2053 goto out;
2054
2055 rc = next_entry(buf, fp, bytes: sizeof(u32));
2056 if (rc)
2057 goto out;
2058
2059 datum->otype = le32_to_cpu(buf[0]);
2060
2061 dst = &datum->next;
2062 }
2063
2064 rc = -ENOMEM;
2065 ft = kmalloc(sizeof(*ft), GFP_KERNEL);
2066 if (!ft)
2067 goto out;
2068
2069 ft->ttype = ttype;
2070 ft->tclass = tclass;
2071 ft->name = name;
2072
2073 rc = hashtab_insert(h: &p->filename_trans, key: ft, datum: first,
2074 key_params: filenametr_key_params);
2075 if (rc == -EEXIST)
2076 pr_err("SELinux: Duplicate filename transition key\n");
2077 if (rc)
2078 goto out;
2079
2080 return ebitmap_set_bit(e: &p->filename_trans_ttypes, bit: ttype, value: 1);
2081
2082out:
2083 kfree(objp: ft);
2084 kfree(objp: name);
2085 while (first) {
2086 datum = first;
2087 first = first->next;
2088
2089 ebitmap_destroy(e: &datum->stypes);
2090 kfree(objp: datum);
2091 }
2092 return rc;
2093}
2094
2095static int filename_trans_read(struct policydb *p, struct policy_file *fp)
2096{
2097 u32 nel, i;
2098 __le32 buf[1];
2099 int rc;
2100
2101 if (p->policyvers < POLICYDB_VERSION_FILENAME_TRANS)
2102 return 0;
2103
2104 rc = next_entry(buf, fp, bytes: sizeof(u32));
2105 if (rc)
2106 return rc;
2107 nel = le32_to_cpu(buf[0]);
2108
2109 if (p->policyvers < POLICYDB_VERSION_COMP_FTRANS) {
2110 p->compat_filename_trans_count = nel;
2111
2112 rc = hashtab_init(h: &p->filename_trans, nel_hint: (1 << 11));
2113 if (rc)
2114 return rc;
2115
2116 for (i = 0; i < nel; i++) {
2117 rc = filename_trans_read_helper_compat(p, fp);
2118 if (rc)
2119 return rc;
2120 }
2121 } else {
2122 rc = hashtab_init(h: &p->filename_trans, nel_hint: nel);
2123 if (rc)
2124 return rc;
2125
2126 for (i = 0; i < nel; i++) {
2127 rc = filename_trans_read_helper(p, fp);
2128 if (rc)
2129 return rc;
2130 }
2131 }
2132 hash_eval(h: &p->filename_trans, hash_name: "filenametr", NULL);
2133 return 0;
2134}
2135
2136static int genfs_read(struct policydb *p, struct policy_file *fp)
2137{
2138 int rc;
2139 u32 i, j, nel, nel2, len, len2;
2140 __le32 buf[1];
2141 struct ocontext *l, *c;
2142 struct ocontext *newc = NULL;
2143 struct genfs *genfs_p, *genfs;
2144 struct genfs *newgenfs = NULL;
2145
2146 rc = next_entry(buf, fp, bytes: sizeof(u32));
2147 if (rc)
2148 return rc;
2149 nel = le32_to_cpu(buf[0]);
2150
2151 for (i = 0; i < nel; i++) {
2152 rc = next_entry(buf, fp, bytes: sizeof(u32));
2153 if (rc)
2154 goto out;
2155 len = le32_to_cpu(buf[0]);
2156
2157 rc = -ENOMEM;
2158 newgenfs = kzalloc(sizeof(*newgenfs), GFP_KERNEL);
2159 if (!newgenfs)
2160 goto out;
2161
2162 rc = str_read(strp: &newgenfs->fstype, GFP_KERNEL, fp, len);
2163 if (rc)
2164 goto out;
2165
2166 for (genfs_p = NULL, genfs = p->genfs; genfs;
2167 genfs_p = genfs, genfs = genfs->next) {
2168 rc = -EINVAL;
2169 if (strcmp(newgenfs->fstype, genfs->fstype) == 0) {
2170 pr_err("SELinux: dup genfs fstype %s\n",
2171 newgenfs->fstype);
2172 goto out;
2173 }
2174 if (strcmp(newgenfs->fstype, genfs->fstype) < 0)
2175 break;
2176 }
2177 newgenfs->next = genfs;
2178 if (genfs_p)
2179 genfs_p->next = newgenfs;
2180 else
2181 p->genfs = newgenfs;
2182 genfs = newgenfs;
2183 newgenfs = NULL;
2184
2185 rc = next_entry(buf, fp, bytes: sizeof(u32));
2186 if (rc)
2187 goto out;
2188
2189 nel2 = le32_to_cpu(buf[0]);
2190 for (j = 0; j < nel2; j++) {
2191 rc = next_entry(buf, fp, bytes: sizeof(u32));
2192 if (rc)
2193 goto out;
2194 len = le32_to_cpu(buf[0]);
2195
2196 rc = -ENOMEM;
2197 newc = kzalloc(sizeof(*newc), GFP_KERNEL);
2198 if (!newc)
2199 goto out;
2200
2201 rc = str_read(strp: &newc->u.name, GFP_KERNEL, fp, len);
2202 if (rc)
2203 goto out;
2204
2205 rc = next_entry(buf, fp, bytes: sizeof(u32));
2206 if (rc)
2207 goto out;
2208
2209 newc->v.sclass = le32_to_cpu(buf[0]);
2210 rc = context_read_and_validate(c: &newc->context[0], p,
2211 fp);
2212 if (rc)
2213 goto out;
2214
2215 for (l = NULL, c = genfs->head; c; l = c, c = c->next) {
2216 rc = -EINVAL;
2217 if (!strcmp(newc->u.name, c->u.name) &&
2218 (!c->v.sclass || !newc->v.sclass ||
2219 newc->v.sclass == c->v.sclass)) {
2220 pr_err("SELinux: dup genfs entry (%s,%s)\n",
2221 genfs->fstype, c->u.name);
2222 goto out;
2223 }
2224 len = strlen(newc->u.name);
2225 len2 = strlen(c->u.name);
2226 if (len > len2)
2227 break;
2228 }
2229
2230 newc->next = c;
2231 if (l)
2232 l->next = newc;
2233 else
2234 genfs->head = newc;
2235 newc = NULL;
2236 }
2237 }
2238 rc = 0;
2239out:
2240 if (newgenfs) {
2241 kfree(objp: newgenfs->fstype);
2242 kfree(objp: newgenfs);
2243 }
2244 ocontext_destroy(c: newc, OCON_FSUSE);
2245
2246 return rc;
2247}
2248
2249static int ocontext_read(struct policydb *p,
2250 const struct policydb_compat_info *info, struct policy_file *fp)
2251{
2252 int rc;
2253 unsigned int i;
2254 u32 j, nel, len;
2255 __be64 prefixbuf[1];
2256 __le32 buf[3];
2257 struct ocontext *l, *c;
2258 u32 nodebuf[8];
2259
2260 for (i = 0; i < info->ocon_num; i++) {
2261 rc = next_entry(buf, fp, bytes: sizeof(u32));
2262 if (rc)
2263 goto out;
2264 nel = le32_to_cpu(buf[0]);
2265
2266 l = NULL;
2267 for (j = 0; j < nel; j++) {
2268 rc = -ENOMEM;
2269 c = kzalloc(sizeof(*c), GFP_KERNEL);
2270 if (!c)
2271 goto out;
2272 if (l)
2273 l->next = c;
2274 else
2275 p->ocontexts[i] = c;
2276 l = c;
2277
2278 switch (i) {
2279 case OCON_ISID:
2280 rc = next_entry(buf, fp, bytes: sizeof(u32));
2281 if (rc)
2282 goto out;
2283
2284 c->sid[0] = le32_to_cpu(buf[0]);
2285 rc = context_read_and_validate(c: &c->context[0],
2286 p, fp);
2287 if (rc)
2288 goto out;
2289 break;
2290 case OCON_FS:
2291 case OCON_NETIF:
2292 rc = next_entry(buf, fp, bytes: sizeof(u32));
2293 if (rc)
2294 goto out;
2295 len = le32_to_cpu(buf[0]);
2296
2297 rc = str_read(strp: &c->u.name, GFP_KERNEL, fp, len);
2298 if (rc)
2299 goto out;
2300
2301 if (i == OCON_FS)
2302 pr_warn("SELinux: void and deprecated fs ocon %s\n",
2303 c->u.name);
2304
2305 rc = context_read_and_validate(c: &c->context[0],
2306 p, fp);
2307 if (rc)
2308 goto out;
2309 rc = context_read_and_validate(c: &c->context[1],
2310 p, fp);
2311 if (rc)
2312 goto out;
2313 break;
2314 case OCON_PORT:
2315 rc = next_entry(buf, fp, bytes: sizeof(u32) * 3);
2316 if (rc)
2317 goto out;
2318 c->u.port.protocol = le32_to_cpu(buf[0]);
2319 c->u.port.low_port = le32_to_cpu(buf[1]);
2320 c->u.port.high_port = le32_to_cpu(buf[2]);
2321 rc = context_read_and_validate(c: &c->context[0],
2322 p, fp);
2323 if (rc)
2324 goto out;
2325 break;
2326 case OCON_NODE:
2327 rc = next_entry(buf: nodebuf, fp, bytes: sizeof(u32) * 2);
2328 if (rc)
2329 goto out;
2330 c->u.node.addr = nodebuf[0]; /* network order */
2331 c->u.node.mask = nodebuf[1]; /* network order */
2332 rc = context_read_and_validate(c: &c->context[0],
2333 p, fp);
2334 if (rc)
2335 goto out;
2336 break;
2337 case OCON_FSUSE:
2338 rc = next_entry(buf, fp, bytes: sizeof(u32) * 2);
2339 if (rc)
2340 goto out;
2341
2342 rc = -EINVAL;
2343 c->v.behavior = le32_to_cpu(buf[0]);
2344 /* Determined at runtime, not in policy DB. */
2345 if (c->v.behavior == SECURITY_FS_USE_MNTPOINT)
2346 goto out;
2347 if (c->v.behavior > SECURITY_FS_USE_MAX)
2348 goto out;
2349
2350 len = le32_to_cpu(buf[1]);
2351 rc = str_read(strp: &c->u.name, GFP_KERNEL, fp, len);
2352 if (rc)
2353 goto out;
2354
2355 rc = context_read_and_validate(c: &c->context[0],
2356 p, fp);
2357 if (rc)
2358 goto out;
2359 break;
2360 case OCON_NODE6: {
2361 int k;
2362
2363 rc = next_entry(buf: nodebuf, fp, bytes: sizeof(u32) * 8);
2364 if (rc)
2365 goto out;
2366 for (k = 0; k < 4; k++)
2367 c->u.node6.addr[k] = nodebuf[k];
2368 for (k = 0; k < 4; k++)
2369 c->u.node6.mask[k] = nodebuf[k + 4];
2370 rc = context_read_and_validate(c: &c->context[0],
2371 p, fp);
2372 if (rc)
2373 goto out;
2374 break;
2375 }
2376 case OCON_IBPKEY: {
2377 u32 pkey_lo, pkey_hi;
2378
2379 rc = next_entry(buf: prefixbuf, fp, bytes: sizeof(u64));
2380 if (rc)
2381 goto out;
2382
2383 /* we need to have subnet_prefix in CPU order */
2384 c->u.ibpkey.subnet_prefix =
2385 be64_to_cpu(prefixbuf[0]);
2386
2387 rc = next_entry(buf, fp, bytes: sizeof(u32) * 2);
2388 if (rc)
2389 goto out;
2390
2391 pkey_lo = le32_to_cpu(buf[0]);
2392 pkey_hi = le32_to_cpu(buf[1]);
2393
2394 if (pkey_lo > U16_MAX || pkey_hi > U16_MAX) {
2395 rc = -EINVAL;
2396 goto out;
2397 }
2398
2399 c->u.ibpkey.low_pkey = pkey_lo;
2400 c->u.ibpkey.high_pkey = pkey_hi;
2401
2402 rc = context_read_and_validate(c: &c->context[0],
2403 p, fp);
2404 if (rc)
2405 goto out;
2406 break;
2407 }
2408 case OCON_IBENDPORT: {
2409 u32 port;
2410
2411 rc = next_entry(buf, fp, bytes: sizeof(u32) * 2);
2412 if (rc)
2413 goto out;
2414 len = le32_to_cpu(buf[0]);
2415
2416 rc = str_read(strp: &c->u.ibendport.dev_name,
2417 GFP_KERNEL, fp, len);
2418 if (rc)
2419 goto out;
2420
2421 port = le32_to_cpu(buf[1]);
2422 if (port > U8_MAX || port == 0) {
2423 rc = -EINVAL;
2424 goto out;
2425 }
2426
2427 c->u.ibendport.port = port;
2428
2429 rc = context_read_and_validate(c: &c->context[0],
2430 p, fp);
2431 if (rc)
2432 goto out;
2433 break;
2434 } /* end case */
2435 } /* end switch */
2436 }
2437 }
2438 rc = 0;
2439out:
2440 return rc;
2441}
2442
2443/*
2444 * Read the configuration data from a policy database binary
2445 * representation file into a policy database structure.
2446 */
2447int policydb_read(struct policydb *p, struct policy_file *fp)
2448{
2449 struct role_allow *ra, *lra;
2450 struct role_trans_key *rtk = NULL;
2451 struct role_trans_datum *rtd = NULL;
2452 int rc;
2453 __le32 buf[4];
2454 u32 i, j, len, nprim, nel, perm;
2455
2456 char *policydb_str;
2457 const struct policydb_compat_info *info;
2458
2459 policydb_init(p);
2460
2461 /* Read the magic number and string length. */
2462 rc = next_entry(buf, fp, bytes: sizeof(u32) * 2);
2463 if (rc)
2464 goto bad;
2465
2466 rc = -EINVAL;
2467 if (le32_to_cpu(buf[0]) != POLICYDB_MAGIC) {
2468 pr_err("SELinux: policydb magic number 0x%x does "
2469 "not match expected magic number 0x%x\n",
2470 le32_to_cpu(buf[0]), POLICYDB_MAGIC);
2471 goto bad;
2472 }
2473
2474 rc = -EINVAL;
2475 len = le32_to_cpu(buf[1]);
2476 if (len != strlen(POLICYDB_STRING)) {
2477 pr_err("SELinux: policydb string length %d does not "
2478 "match expected length %zu\n",
2479 len, strlen(POLICYDB_STRING));
2480 goto bad;
2481 }
2482
2483 rc = str_read(strp: &policydb_str, GFP_KERNEL, fp, len);
2484 if (rc) {
2485 if (rc == -ENOMEM) {
2486 pr_err("SELinux: unable to allocate memory for policydb string of length %d\n",
2487 len);
2488 } else {
2489 pr_err("SELinux: truncated policydb string identifier\n");
2490 }
2491 goto bad;
2492 }
2493
2494 rc = -EINVAL;
2495 if (strcmp(policydb_str, POLICYDB_STRING)) {
2496 pr_err("SELinux: policydb string %s does not match "
2497 "my string %s\n",
2498 policydb_str, POLICYDB_STRING);
2499 kfree(objp: policydb_str);
2500 goto bad;
2501 }
2502 /* Done with policydb_str. */
2503 kfree(objp: policydb_str);
2504 policydb_str = NULL;
2505
2506 /* Read the version and table sizes. */
2507 rc = next_entry(buf, fp, bytes: sizeof(u32) * 4);
2508 if (rc)
2509 goto bad;
2510
2511 rc = -EINVAL;
2512 p->policyvers = le32_to_cpu(buf[0]);
2513 if (p->policyvers < POLICYDB_VERSION_MIN ||
2514 p->policyvers > POLICYDB_VERSION_MAX) {
2515 pr_err("SELinux: policydb version %d does not match "
2516 "my version range %d-%d\n",
2517 le32_to_cpu(buf[0]), POLICYDB_VERSION_MIN,
2518 POLICYDB_VERSION_MAX);
2519 goto bad;
2520 }
2521
2522 if ((le32_to_cpu(buf[1]) & POLICYDB_CONFIG_MLS)) {
2523 p->mls_enabled = 1;
2524
2525 rc = -EINVAL;
2526 if (p->policyvers < POLICYDB_VERSION_MLS) {
2527 pr_err("SELinux: security policydb version %d "
2528 "(MLS) not backwards compatible\n",
2529 p->policyvers);
2530 goto bad;
2531 }
2532 }
2533 p->reject_unknown = !!(le32_to_cpu(buf[1]) & REJECT_UNKNOWN);
2534 p->allow_unknown = !!(le32_to_cpu(buf[1]) & ALLOW_UNKNOWN);
2535
2536 if (p->policyvers >= POLICYDB_VERSION_POLCAP) {
2537 rc = ebitmap_read(e: &p->policycaps, fp);
2538 if (rc)
2539 goto bad;
2540 }
2541
2542 if (p->policyvers >= POLICYDB_VERSION_PERMISSIVE) {
2543 rc = ebitmap_read(e: &p->permissive_map, fp);
2544 if (rc)
2545 goto bad;
2546 }
2547
2548 if (p->policyvers >= POLICYDB_VERSION_NEVERAUDIT) {
2549 rc = ebitmap_read(e: &p->neveraudit_map, fp);
2550 if (rc)
2551 goto bad;
2552 }
2553
2554 rc = -EINVAL;
2555 info = policydb_lookup_compat(version: p->policyvers);
2556 if (!info) {
2557 pr_err("SELinux: unable to find policy compat info "
2558 "for version %d\n",
2559 p->policyvers);
2560 goto bad;
2561 }
2562
2563 rc = -EINVAL;
2564 if (le32_to_cpu(buf[2]) != info->sym_num ||
2565 le32_to_cpu(buf[3]) != info->ocon_num) {
2566 pr_err("SELinux: policydb table sizes (%d,%d) do "
2567 "not match mine (%d,%d)\n",
2568 le32_to_cpu(buf[2]), le32_to_cpu(buf[3]), info->sym_num,
2569 info->ocon_num);
2570 goto bad;
2571 }
2572
2573 for (i = 0; i < info->sym_num; i++) {
2574 rc = next_entry(buf, fp, bytes: sizeof(u32) * 2);
2575 if (rc)
2576 goto bad;
2577 nprim = le32_to_cpu(buf[0]);
2578 nel = le32_to_cpu(buf[1]);
2579
2580 rc = symtab_init(s: &p->symtab[i], size: nel);
2581 if (rc)
2582 goto out;
2583
2584 if (i == SYM_ROLES) {
2585 rc = roles_init(p);
2586 if (rc)
2587 goto out;
2588 }
2589
2590 for (j = 0; j < nel; j++) {
2591 rc = read_f[i](p, &p->symtab[i], fp);
2592 if (rc)
2593 goto bad;
2594 }
2595
2596 p->symtab[i].nprim = nprim;
2597 }
2598
2599 rc = -EINVAL;
2600 p->process_class = string_to_security_class(p, name: "process");
2601 if (!p->process_class) {
2602 pr_err("SELinux: process class is required, not defined in policy\n");
2603 goto bad;
2604 }
2605
2606 rc = avtab_read(a: &p->te_avtab, fp, pol: p);
2607 if (rc)
2608 goto bad;
2609
2610 if (p->policyvers >= POLICYDB_VERSION_BOOL) {
2611 rc = cond_read_list(p, fp);
2612 if (rc)
2613 goto bad;
2614 }
2615
2616 rc = next_entry(buf, fp, bytes: sizeof(u32));
2617 if (rc)
2618 goto bad;
2619 nel = le32_to_cpu(buf[0]);
2620
2621 rc = hashtab_init(h: &p->role_tr, nel_hint: nel);
2622 if (rc)
2623 goto bad;
2624 for (i = 0; i < nel; i++) {
2625 rc = -ENOMEM;
2626 rtk = kmalloc(sizeof(*rtk), GFP_KERNEL);
2627 if (!rtk)
2628 goto bad;
2629
2630 rc = -ENOMEM;
2631 rtd = kmalloc(sizeof(*rtd), GFP_KERNEL);
2632 if (!rtd)
2633 goto bad;
2634
2635 rc = next_entry(buf, fp, bytes: sizeof(u32) * 3);
2636 if (rc)
2637 goto bad;
2638
2639 rtk->role = le32_to_cpu(buf[0]);
2640 rtk->type = le32_to_cpu(buf[1]);
2641 rtd->new_role = le32_to_cpu(buf[2]);
2642 if (p->policyvers >= POLICYDB_VERSION_ROLETRANS) {
2643 rc = next_entry(buf, fp, bytes: sizeof(u32));
2644 if (rc)
2645 goto bad;
2646 rtk->tclass = le32_to_cpu(buf[0]);
2647 } else
2648 rtk->tclass = p->process_class;
2649
2650 rc = -EINVAL;
2651 if (!policydb_role_isvalid(p, role: rtk->role) ||
2652 !policydb_type_isvalid(p, type: rtk->type) ||
2653 !policydb_class_isvalid(p, class: rtk->tclass) ||
2654 !policydb_role_isvalid(p, role: rtd->new_role))
2655 goto bad;
2656
2657 rc = hashtab_insert(h: &p->role_tr, key: rtk, datum: rtd, key_params: roletr_key_params);
2658 if (rc)
2659 goto bad;
2660
2661 rtk = NULL;
2662 rtd = NULL;
2663 }
2664
2665 hash_eval(h: &p->role_tr, hash_name: "roletr", NULL);
2666
2667 rc = next_entry(buf, fp, bytes: sizeof(u32));
2668 if (rc)
2669 goto bad;
2670 nel = le32_to_cpu(buf[0]);
2671 lra = NULL;
2672 for (i = 0; i < nel; i++) {
2673 rc = -ENOMEM;
2674 ra = kzalloc(sizeof(*ra), GFP_KERNEL);
2675 if (!ra)
2676 goto bad;
2677 if (lra)
2678 lra->next = ra;
2679 else
2680 p->role_allow = ra;
2681 rc = next_entry(buf, fp, bytes: sizeof(u32) * 2);
2682 if (rc)
2683 goto bad;
2684
2685 rc = -EINVAL;
2686 ra->role = le32_to_cpu(buf[0]);
2687 ra->new_role = le32_to_cpu(buf[1]);
2688 if (!policydb_role_isvalid(p, role: ra->role) ||
2689 !policydb_role_isvalid(p, role: ra->new_role))
2690 goto bad;
2691 lra = ra;
2692 }
2693
2694 rc = filename_trans_read(p, fp);
2695 if (rc)
2696 goto bad;
2697
2698 rc = policydb_index(p);
2699 if (rc)
2700 goto bad;
2701
2702 rc = -EINVAL;
2703 perm = string_to_av_perm(p, tclass: p->process_class, name: "transition");
2704 if (!perm) {
2705 pr_err("SELinux: process transition permission is required, not defined in policy\n");
2706 goto bad;
2707 }
2708 p->process_trans_perms = perm;
2709 perm = string_to_av_perm(p, tclass: p->process_class, name: "dyntransition");
2710 if (!perm) {
2711 pr_err("SELinux: process dyntransition permission is required, not defined in policy\n");
2712 goto bad;
2713 }
2714 p->process_trans_perms |= perm;
2715
2716 rc = ocontext_read(p, info, fp);
2717 if (rc)
2718 goto bad;
2719
2720 rc = genfs_read(p, fp);
2721 if (rc)
2722 goto bad;
2723
2724 rc = range_read(p, fp);
2725 if (rc)
2726 goto bad;
2727
2728 rc = -ENOMEM;
2729 p->type_attr_map_array = kvcalloc(
2730 p->p_types.nprim, sizeof(*p->type_attr_map_array), GFP_KERNEL);
2731 if (!p->type_attr_map_array)
2732 goto bad;
2733
2734 /* just in case ebitmap_init() becomes more than just a memset(0): */
2735 for (i = 0; i < p->p_types.nprim; i++)
2736 ebitmap_init(e: &p->type_attr_map_array[i]);
2737
2738 for (i = 0; i < p->p_types.nprim; i++) {
2739 struct ebitmap *e = &p->type_attr_map_array[i];
2740
2741 if (p->policyvers >= POLICYDB_VERSION_AVTAB) {
2742 rc = ebitmap_read(e, fp);
2743 if (rc)
2744 goto bad;
2745 }
2746 /* add the type itself as the degenerate case */
2747 rc = ebitmap_set_bit(e, bit: i, value: 1);
2748 if (rc)
2749 goto bad;
2750 }
2751
2752 rc = policydb_bounds_sanity_check(p);
2753 if (rc)
2754 goto bad;
2755
2756 rc = 0;
2757out:
2758 return rc;
2759bad:
2760 kfree(objp: rtk);
2761 kfree(objp: rtd);
2762 policydb_destroy(p);
2763 goto out;
2764}
2765
2766/*
2767 * Write a MLS level structure to a policydb binary
2768 * representation file.
2769 */
2770static int mls_write_level(struct mls_level *l, struct policy_file *fp)
2771{
2772 __le32 buf[1];
2773 int rc;
2774
2775 buf[0] = cpu_to_le32(l->sens);
2776 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
2777 if (rc)
2778 return rc;
2779
2780 rc = ebitmap_write(e: &l->cat, fp);
2781 if (rc)
2782 return rc;
2783
2784 return 0;
2785}
2786
2787/*
2788 * Write a MLS range structure to a policydb binary
2789 * representation file.
2790 */
2791static int mls_write_range_helper(struct mls_range *r, struct policy_file *fp)
2792{
2793 __le32 buf[3];
2794 size_t items;
2795 int rc, eq;
2796
2797 eq = mls_level_eq(l1: &r->level[1], l2: &r->level[0]);
2798
2799 if (eq)
2800 items = 2;
2801 else
2802 items = 3;
2803 buf[0] = cpu_to_le32(items - 1);
2804 buf[1] = cpu_to_le32(r->level[0].sens);
2805 if (!eq)
2806 buf[2] = cpu_to_le32(r->level[1].sens);
2807
2808 BUG_ON(items > ARRAY_SIZE(buf));
2809
2810 rc = put_entry(buf, bytes: sizeof(u32), num: items, fp);
2811 if (rc)
2812 return rc;
2813
2814 rc = ebitmap_write(e: &r->level[0].cat, fp);
2815 if (rc)
2816 return rc;
2817 if (!eq) {
2818 rc = ebitmap_write(e: &r->level[1].cat, fp);
2819 if (rc)
2820 return rc;
2821 }
2822
2823 return 0;
2824}
2825
2826static int sens_write(void *vkey, void *datum, void *ptr)
2827{
2828 char *key = vkey;
2829 struct level_datum *levdatum = datum;
2830 struct policy_data *pd = ptr;
2831 struct policy_file *fp = pd->fp;
2832 __le32 buf[2];
2833 size_t len;
2834 int rc;
2835
2836 len = strlen(key);
2837 buf[0] = cpu_to_le32(len);
2838 buf[1] = cpu_to_le32(levdatum->isalias);
2839 rc = put_entry(buf, bytes: sizeof(u32), num: 2, fp);
2840 if (rc)
2841 return rc;
2842
2843 rc = put_entry(buf: key, bytes: 1, num: len, fp);
2844 if (rc)
2845 return rc;
2846
2847 rc = mls_write_level(l: &levdatum->level, fp);
2848 if (rc)
2849 return rc;
2850
2851 return 0;
2852}
2853
2854static int cat_write(void *vkey, void *datum, void *ptr)
2855{
2856 char *key = vkey;
2857 struct cat_datum *catdatum = datum;
2858 struct policy_data *pd = ptr;
2859 struct policy_file *fp = pd->fp;
2860 __le32 buf[3];
2861 size_t len;
2862 int rc;
2863
2864 len = strlen(key);
2865 buf[0] = cpu_to_le32(len);
2866 buf[1] = cpu_to_le32(catdatum->value);
2867 buf[2] = cpu_to_le32(catdatum->isalias);
2868 rc = put_entry(buf, bytes: sizeof(u32), num: 3, fp);
2869 if (rc)
2870 return rc;
2871
2872 rc = put_entry(buf: key, bytes: 1, num: len, fp);
2873 if (rc)
2874 return rc;
2875
2876 return 0;
2877}
2878
2879static int role_trans_write_one(void *key, void *datum, void *ptr)
2880{
2881 struct role_trans_key *rtk = key;
2882 struct role_trans_datum *rtd = datum;
2883 struct policy_data *pd = ptr;
2884 struct policy_file *fp = pd->fp;
2885 struct policydb *p = pd->p;
2886 __le32 buf[3];
2887 int rc;
2888
2889 buf[0] = cpu_to_le32(rtk->role);
2890 buf[1] = cpu_to_le32(rtk->type);
2891 buf[2] = cpu_to_le32(rtd->new_role);
2892 rc = put_entry(buf, bytes: sizeof(u32), num: 3, fp);
2893 if (rc)
2894 return rc;
2895 if (p->policyvers >= POLICYDB_VERSION_ROLETRANS) {
2896 buf[0] = cpu_to_le32(rtk->tclass);
2897 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
2898 if (rc)
2899 return rc;
2900 }
2901 return 0;
2902}
2903
2904static int role_trans_write(struct policydb *p, struct policy_file *fp)
2905{
2906 struct policy_data pd = { .p = p, .fp = fp };
2907 __le32 buf[1];
2908 int rc;
2909
2910 buf[0] = cpu_to_le32(p->role_tr.nel);
2911 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
2912 if (rc)
2913 return rc;
2914
2915 return hashtab_map(h: &p->role_tr, apply: role_trans_write_one, args: &pd);
2916}
2917
2918static int role_allow_write(struct role_allow *r, struct policy_file *fp)
2919{
2920 struct role_allow *ra;
2921 __le32 buf[2];
2922 size_t nel;
2923 int rc;
2924
2925 nel = 0;
2926 for (ra = r; ra; ra = ra->next)
2927 nel++;
2928 buf[0] = cpu_to_le32(nel);
2929 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
2930 if (rc)
2931 return rc;
2932 for (ra = r; ra; ra = ra->next) {
2933 buf[0] = cpu_to_le32(ra->role);
2934 buf[1] = cpu_to_le32(ra->new_role);
2935 rc = put_entry(buf, bytes: sizeof(u32), num: 2, fp);
2936 if (rc)
2937 return rc;
2938 }
2939 return 0;
2940}
2941
2942/*
2943 * Write a security context structure
2944 * to a policydb binary representation file.
2945 */
2946static int context_write(struct policydb *p, struct context *c, struct policy_file *fp)
2947{
2948 int rc;
2949 __le32 buf[3];
2950
2951 buf[0] = cpu_to_le32(c->user);
2952 buf[1] = cpu_to_le32(c->role);
2953 buf[2] = cpu_to_le32(c->type);
2954
2955 rc = put_entry(buf, bytes: sizeof(u32), num: 3, fp);
2956 if (rc)
2957 return rc;
2958
2959 rc = mls_write_range_helper(r: &c->range, fp);
2960 if (rc)
2961 return rc;
2962
2963 return 0;
2964}
2965
2966/*
2967 * The following *_write functions are used to
2968 * write the symbol data to a policy database
2969 * binary representation file.
2970 */
2971
2972static int perm_write(void *vkey, void *datum, void *fp)
2973{
2974 char *key = vkey;
2975 struct perm_datum *perdatum = datum;
2976 __le32 buf[2];
2977 size_t len;
2978 int rc;
2979
2980 len = strlen(key);
2981 buf[0] = cpu_to_le32(len);
2982 buf[1] = cpu_to_le32(perdatum->value);
2983 rc = put_entry(buf, bytes: sizeof(u32), num: 2, fp);
2984 if (rc)
2985 return rc;
2986
2987 rc = put_entry(buf: key, bytes: 1, num: len, fp);
2988 if (rc)
2989 return rc;
2990
2991 return 0;
2992}
2993
2994static int common_write(void *vkey, void *datum, void *ptr)
2995{
2996 char *key = vkey;
2997 struct common_datum *comdatum = datum;
2998 struct policy_data *pd = ptr;
2999 struct policy_file *fp = pd->fp;
3000 __le32 buf[4];
3001 size_t len;
3002 int rc;
3003
3004 len = strlen(key);
3005 buf[0] = cpu_to_le32(len);
3006 buf[1] = cpu_to_le32(comdatum->value);
3007 buf[2] = cpu_to_le32(comdatum->permissions.nprim);
3008 buf[3] = cpu_to_le32(comdatum->permissions.table.nel);
3009 rc = put_entry(buf, bytes: sizeof(u32), num: 4, fp);
3010 if (rc)
3011 return rc;
3012
3013 rc = put_entry(buf: key, bytes: 1, num: len, fp);
3014 if (rc)
3015 return rc;
3016
3017 rc = hashtab_map(h: &comdatum->permissions.table, apply: perm_write, args: fp);
3018 if (rc)
3019 return rc;
3020
3021 return 0;
3022}
3023
3024static int type_set_write(struct type_set *t, struct policy_file *fp)
3025{
3026 int rc;
3027 __le32 buf[1];
3028
3029 if (ebitmap_write(e: &t->types, fp))
3030 return -EINVAL;
3031 if (ebitmap_write(e: &t->negset, fp))
3032 return -EINVAL;
3033
3034 buf[0] = cpu_to_le32(t->flags);
3035 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3036 if (rc)
3037 return -EINVAL;
3038
3039 return 0;
3040}
3041
3042static int write_cons_helper(struct policydb *p, struct constraint_node *node,
3043 struct policy_file *fp)
3044{
3045 struct constraint_node *c;
3046 struct constraint_expr *e;
3047 __le32 buf[3];
3048 u32 nel;
3049 int rc;
3050
3051 for (c = node; c; c = c->next) {
3052 nel = 0;
3053 for (e = c->expr; e; e = e->next)
3054 nel++;
3055 buf[0] = cpu_to_le32(c->permissions);
3056 buf[1] = cpu_to_le32(nel);
3057 rc = put_entry(buf, bytes: sizeof(u32), num: 2, fp);
3058 if (rc)
3059 return rc;
3060 for (e = c->expr; e; e = e->next) {
3061 buf[0] = cpu_to_le32(e->expr_type);
3062 buf[1] = cpu_to_le32(e->attr);
3063 buf[2] = cpu_to_le32(e->op);
3064 rc = put_entry(buf, bytes: sizeof(u32), num: 3, fp);
3065 if (rc)
3066 return rc;
3067
3068 switch (e->expr_type) {
3069 case CEXPR_NAMES:
3070 rc = ebitmap_write(e: &e->names, fp);
3071 if (rc)
3072 return rc;
3073 if (p->policyvers >=
3074 POLICYDB_VERSION_CONSTRAINT_NAMES) {
3075 rc = type_set_write(t: e->type_names, fp);
3076 if (rc)
3077 return rc;
3078 }
3079 break;
3080 default:
3081 break;
3082 }
3083 }
3084 }
3085
3086 return 0;
3087}
3088
3089static int class_write(void *vkey, void *datum, void *ptr)
3090{
3091 char *key = vkey;
3092 struct class_datum *cladatum = datum;
3093 struct policy_data *pd = ptr;
3094 struct policy_file *fp = pd->fp;
3095 struct policydb *p = pd->p;
3096 struct constraint_node *c;
3097 __le32 buf[6];
3098 u32 ncons;
3099 size_t len, len2;
3100 int rc;
3101
3102 len = strlen(key);
3103 if (cladatum->comkey)
3104 len2 = strlen(cladatum->comkey);
3105 else
3106 len2 = 0;
3107
3108 ncons = 0;
3109 for (c = cladatum->constraints; c; c = c->next)
3110 ncons++;
3111
3112 buf[0] = cpu_to_le32(len);
3113 buf[1] = cpu_to_le32(len2);
3114 buf[2] = cpu_to_le32(cladatum->value);
3115 buf[3] = cpu_to_le32(cladatum->permissions.nprim);
3116 buf[4] = cpu_to_le32(cladatum->permissions.table.nel);
3117 buf[5] = cpu_to_le32(ncons);
3118 rc = put_entry(buf, bytes: sizeof(u32), num: 6, fp);
3119 if (rc)
3120 return rc;
3121
3122 rc = put_entry(buf: key, bytes: 1, num: len, fp);
3123 if (rc)
3124 return rc;
3125
3126 if (cladatum->comkey) {
3127 rc = put_entry(buf: cladatum->comkey, bytes: 1, num: len2, fp);
3128 if (rc)
3129 return rc;
3130 }
3131
3132 rc = hashtab_map(h: &cladatum->permissions.table, apply: perm_write, args: fp);
3133 if (rc)
3134 return rc;
3135
3136 rc = write_cons_helper(p, node: cladatum->constraints, fp);
3137 if (rc)
3138 return rc;
3139
3140 /* write out the validatetrans rule */
3141 ncons = 0;
3142 for (c = cladatum->validatetrans; c; c = c->next)
3143 ncons++;
3144
3145 buf[0] = cpu_to_le32(ncons);
3146 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3147 if (rc)
3148 return rc;
3149
3150 rc = write_cons_helper(p, node: cladatum->validatetrans, fp);
3151 if (rc)
3152 return rc;
3153
3154 if (p->policyvers >= POLICYDB_VERSION_NEW_OBJECT_DEFAULTS) {
3155 buf[0] = cpu_to_le32(cladatum->default_user);
3156 buf[1] = cpu_to_le32(cladatum->default_role);
3157 buf[2] = cpu_to_le32(cladatum->default_range);
3158
3159 rc = put_entry(buf, bytes: sizeof(uint32_t), num: 3, fp);
3160 if (rc)
3161 return rc;
3162 }
3163
3164 if (p->policyvers >= POLICYDB_VERSION_DEFAULT_TYPE) {
3165 buf[0] = cpu_to_le32(cladatum->default_type);
3166 rc = put_entry(buf, bytes: sizeof(uint32_t), num: 1, fp);
3167 if (rc)
3168 return rc;
3169 }
3170
3171 return 0;
3172}
3173
3174static int role_write(void *vkey, void *datum, void *ptr)
3175{
3176 char *key = vkey;
3177 struct role_datum *role = datum;
3178 struct policy_data *pd = ptr;
3179 struct policy_file *fp = pd->fp;
3180 struct policydb *p = pd->p;
3181 __le32 buf[3];
3182 size_t items, len;
3183 int rc;
3184
3185 len = strlen(key);
3186 items = 0;
3187 buf[items++] = cpu_to_le32(len);
3188 buf[items++] = cpu_to_le32(role->value);
3189 if (p->policyvers >= POLICYDB_VERSION_BOUNDARY)
3190 buf[items++] = cpu_to_le32(role->bounds);
3191
3192 BUG_ON(items > ARRAY_SIZE(buf));
3193
3194 rc = put_entry(buf, bytes: sizeof(u32), num: items, fp);
3195 if (rc)
3196 return rc;
3197
3198 rc = put_entry(buf: key, bytes: 1, num: len, fp);
3199 if (rc)
3200 return rc;
3201
3202 rc = ebitmap_write(e: &role->dominates, fp);
3203 if (rc)
3204 return rc;
3205
3206 rc = ebitmap_write(e: &role->types, fp);
3207 if (rc)
3208 return rc;
3209
3210 return 0;
3211}
3212
3213static int type_write(void *vkey, void *datum, void *ptr)
3214{
3215 char *key = vkey;
3216 struct type_datum *typdatum = datum;
3217 struct policy_data *pd = ptr;
3218 struct policydb *p = pd->p;
3219 struct policy_file *fp = pd->fp;
3220 __le32 buf[4];
3221 int rc;
3222 size_t items, len;
3223
3224 len = strlen(key);
3225 items = 0;
3226 buf[items++] = cpu_to_le32(len);
3227 buf[items++] = cpu_to_le32(typdatum->value);
3228 if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) {
3229 u32 properties = 0;
3230
3231 if (typdatum->primary)
3232 properties |= TYPEDATUM_PROPERTY_PRIMARY;
3233
3234 if (typdatum->attribute)
3235 properties |= TYPEDATUM_PROPERTY_ATTRIBUTE;
3236
3237 buf[items++] = cpu_to_le32(properties);
3238 buf[items++] = cpu_to_le32(typdatum->bounds);
3239 } else {
3240 buf[items++] = cpu_to_le32(typdatum->primary);
3241 }
3242 BUG_ON(items > ARRAY_SIZE(buf));
3243 rc = put_entry(buf, bytes: sizeof(u32), num: items, fp);
3244 if (rc)
3245 return rc;
3246
3247 rc = put_entry(buf: key, bytes: 1, num: len, fp);
3248 if (rc)
3249 return rc;
3250
3251 return 0;
3252}
3253
3254static int user_write(void *vkey, void *datum, void *ptr)
3255{
3256 char *key = vkey;
3257 struct user_datum *usrdatum = datum;
3258 struct policy_data *pd = ptr;
3259 struct policydb *p = pd->p;
3260 struct policy_file *fp = pd->fp;
3261 __le32 buf[3];
3262 size_t items, len;
3263 int rc;
3264
3265 len = strlen(key);
3266 items = 0;
3267 buf[items++] = cpu_to_le32(len);
3268 buf[items++] = cpu_to_le32(usrdatum->value);
3269 if (p->policyvers >= POLICYDB_VERSION_BOUNDARY)
3270 buf[items++] = cpu_to_le32(usrdatum->bounds);
3271 BUG_ON(items > ARRAY_SIZE(buf));
3272 rc = put_entry(buf, bytes: sizeof(u32), num: items, fp);
3273 if (rc)
3274 return rc;
3275
3276 rc = put_entry(buf: key, bytes: 1, num: len, fp);
3277 if (rc)
3278 return rc;
3279
3280 rc = ebitmap_write(e: &usrdatum->roles, fp);
3281 if (rc)
3282 return rc;
3283
3284 rc = mls_write_range_helper(r: &usrdatum->range, fp);
3285 if (rc)
3286 return rc;
3287
3288 rc = mls_write_level(l: &usrdatum->dfltlevel, fp);
3289 if (rc)
3290 return rc;
3291
3292 return 0;
3293}
3294
3295/* clang-format off */
3296static int (*const write_f[SYM_NUM])(void *key, void *datum, void *datap) = {
3297 common_write,
3298 class_write,
3299 role_write,
3300 type_write,
3301 user_write,
3302 cond_write_bool,
3303 sens_write,
3304 cat_write,
3305};
3306/* clang-format on */
3307
3308static int ocontext_write(struct policydb *p,
3309 const struct policydb_compat_info *info,
3310 struct policy_file *fp)
3311{
3312 unsigned int i, j;
3313 int rc;
3314 size_t nel, len;
3315 __be64 prefixbuf[1];
3316 __le32 buf[3];
3317 u32 nodebuf[8];
3318 struct ocontext *c;
3319 for (i = 0; i < info->ocon_num; i++) {
3320 nel = 0;
3321 for (c = p->ocontexts[i]; c; c = c->next)
3322 nel++;
3323 buf[0] = cpu_to_le32(nel);
3324 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3325 if (rc)
3326 return rc;
3327 for (c = p->ocontexts[i]; c; c = c->next) {
3328 switch (i) {
3329 case OCON_ISID:
3330 buf[0] = cpu_to_le32(c->sid[0]);
3331 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3332 if (rc)
3333 return rc;
3334 rc = context_write(p, c: &c->context[0], fp);
3335 if (rc)
3336 return rc;
3337 break;
3338 case OCON_FS:
3339 case OCON_NETIF:
3340 len = strlen(c->u.name);
3341 buf[0] = cpu_to_le32(len);
3342 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3343 if (rc)
3344 return rc;
3345 rc = put_entry(buf: c->u.name, bytes: 1, num: len, fp);
3346 if (rc)
3347 return rc;
3348 rc = context_write(p, c: &c->context[0], fp);
3349 if (rc)
3350 return rc;
3351 rc = context_write(p, c: &c->context[1], fp);
3352 if (rc)
3353 return rc;
3354 break;
3355 case OCON_PORT:
3356 buf[0] = cpu_to_le32(c->u.port.protocol);
3357 buf[1] = cpu_to_le32(c->u.port.low_port);
3358 buf[2] = cpu_to_le32(c->u.port.high_port);
3359 rc = put_entry(buf, bytes: sizeof(u32), num: 3, fp);
3360 if (rc)
3361 return rc;
3362 rc = context_write(p, c: &c->context[0], fp);
3363 if (rc)
3364 return rc;
3365 break;
3366 case OCON_NODE:
3367 nodebuf[0] = c->u.node.addr; /* network order */
3368 nodebuf[1] = c->u.node.mask; /* network order */
3369 rc = put_entry(buf: nodebuf, bytes: sizeof(u32), num: 2, fp);
3370 if (rc)
3371 return rc;
3372 rc = context_write(p, c: &c->context[0], fp);
3373 if (rc)
3374 return rc;
3375 break;
3376 case OCON_FSUSE:
3377 buf[0] = cpu_to_le32(c->v.behavior);
3378 len = strlen(c->u.name);
3379 buf[1] = cpu_to_le32(len);
3380 rc = put_entry(buf, bytes: sizeof(u32), num: 2, fp);
3381 if (rc)
3382 return rc;
3383 rc = put_entry(buf: c->u.name, bytes: 1, num: len, fp);
3384 if (rc)
3385 return rc;
3386 rc = context_write(p, c: &c->context[0], fp);
3387 if (rc)
3388 return rc;
3389 break;
3390 case OCON_NODE6:
3391 for (j = 0; j < 4; j++)
3392 nodebuf[j] =
3393 c->u.node6.addr
3394 [j]; /* network order */
3395 for (j = 0; j < 4; j++)
3396 nodebuf[j + 4] =
3397 c->u.node6.mask
3398 [j]; /* network order */
3399 rc = put_entry(buf: nodebuf, bytes: sizeof(u32), num: 8, fp);
3400 if (rc)
3401 return rc;
3402 rc = context_write(p, c: &c->context[0], fp);
3403 if (rc)
3404 return rc;
3405 break;
3406 case OCON_IBPKEY:
3407 /* subnet_prefix is in CPU order */
3408 prefixbuf[0] =
3409 cpu_to_be64(c->u.ibpkey.subnet_prefix);
3410
3411 rc = put_entry(buf: prefixbuf, bytes: sizeof(u64), num: 1, fp);
3412 if (rc)
3413 return rc;
3414
3415 buf[0] = cpu_to_le32(c->u.ibpkey.low_pkey);
3416 buf[1] = cpu_to_le32(c->u.ibpkey.high_pkey);
3417
3418 rc = put_entry(buf, bytes: sizeof(u32), num: 2, fp);
3419 if (rc)
3420 return rc;
3421 rc = context_write(p, c: &c->context[0], fp);
3422 if (rc)
3423 return rc;
3424 break;
3425 case OCON_IBENDPORT:
3426 len = strlen(c->u.ibendport.dev_name);
3427 buf[0] = cpu_to_le32(len);
3428 buf[1] = cpu_to_le32(c->u.ibendport.port);
3429 rc = put_entry(buf, bytes: sizeof(u32), num: 2, fp);
3430 if (rc)
3431 return rc;
3432 rc = put_entry(buf: c->u.ibendport.dev_name, bytes: 1, num: len,
3433 fp);
3434 if (rc)
3435 return rc;
3436 rc = context_write(p, c: &c->context[0], fp);
3437 if (rc)
3438 return rc;
3439 break;
3440 }
3441 }
3442 }
3443 return 0;
3444}
3445
3446static int genfs_write(struct policydb *p, struct policy_file *fp)
3447{
3448 struct genfs *genfs;
3449 struct ocontext *c;
3450 size_t len;
3451 __le32 buf[1];
3452 int rc;
3453
3454 len = 0;
3455 for (genfs = p->genfs; genfs; genfs = genfs->next)
3456 len++;
3457 buf[0] = cpu_to_le32(len);
3458 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3459 if (rc)
3460 return rc;
3461 for (genfs = p->genfs; genfs; genfs = genfs->next) {
3462 len = strlen(genfs->fstype);
3463 buf[0] = cpu_to_le32(len);
3464 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3465 if (rc)
3466 return rc;
3467 rc = put_entry(buf: genfs->fstype, bytes: 1, num: len, fp);
3468 if (rc)
3469 return rc;
3470 len = 0;
3471 for (c = genfs->head; c; c = c->next)
3472 len++;
3473 buf[0] = cpu_to_le32(len);
3474 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3475 if (rc)
3476 return rc;
3477 for (c = genfs->head; c; c = c->next) {
3478 len = strlen(c->u.name);
3479 buf[0] = cpu_to_le32(len);
3480 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3481 if (rc)
3482 return rc;
3483 rc = put_entry(buf: c->u.name, bytes: 1, num: len, fp);
3484 if (rc)
3485 return rc;
3486 buf[0] = cpu_to_le32(c->v.sclass);
3487 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3488 if (rc)
3489 return rc;
3490 rc = context_write(p, c: &c->context[0], fp);
3491 if (rc)
3492 return rc;
3493 }
3494 }
3495 return 0;
3496}
3497
3498static int range_write_helper(void *key, void *data, void *ptr)
3499{
3500 __le32 buf[2];
3501 struct range_trans *rt = key;
3502 struct mls_range *r = data;
3503 struct policy_data *pd = ptr;
3504 struct policy_file *fp = pd->fp;
3505 struct policydb *p = pd->p;
3506 int rc;
3507
3508 buf[0] = cpu_to_le32(rt->source_type);
3509 buf[1] = cpu_to_le32(rt->target_type);
3510 rc = put_entry(buf, bytes: sizeof(u32), num: 2, fp);
3511 if (rc)
3512 return rc;
3513 if (p->policyvers >= POLICYDB_VERSION_RANGETRANS) {
3514 buf[0] = cpu_to_le32(rt->target_class);
3515 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3516 if (rc)
3517 return rc;
3518 }
3519 rc = mls_write_range_helper(r, fp);
3520 if (rc)
3521 return rc;
3522
3523 return 0;
3524}
3525
3526static int range_write(struct policydb *p, struct policy_file *fp)
3527{
3528 __le32 buf[1];
3529 int rc;
3530 struct policy_data pd;
3531
3532 pd.p = p;
3533 pd.fp = fp;
3534
3535 buf[0] = cpu_to_le32(p->range_tr.nel);
3536 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3537 if (rc)
3538 return rc;
3539
3540 /* actually write all of the entries */
3541 rc = hashtab_map(h: &p->range_tr, apply: range_write_helper, args: &pd);
3542 if (rc)
3543 return rc;
3544
3545 return 0;
3546}
3547
3548static int filename_write_helper_compat(void *key, void *data, void *ptr)
3549{
3550 struct filename_trans_key *ft = key;
3551 struct filename_trans_datum *datum = data;
3552 struct ebitmap_node *node;
3553 struct policy_file *fp = ptr;
3554 __le32 buf[4];
3555 int rc;
3556 u32 bit, len = strlen(ft->name);
3557
3558 do {
3559 ebitmap_for_each_positive_bit(&datum->stypes, node, bit)
3560 {
3561 buf[0] = cpu_to_le32(len);
3562 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3563 if (rc)
3564 return rc;
3565
3566 rc = put_entry(buf: ft->name, bytes: sizeof(char), num: len, fp);
3567 if (rc)
3568 return rc;
3569
3570 buf[0] = cpu_to_le32(bit + 1);
3571 buf[1] = cpu_to_le32(ft->ttype);
3572 buf[2] = cpu_to_le32(ft->tclass);
3573 buf[3] = cpu_to_le32(datum->otype);
3574
3575 rc = put_entry(buf, bytes: sizeof(u32), num: 4, fp);
3576 if (rc)
3577 return rc;
3578 }
3579
3580 datum = datum->next;
3581 } while (unlikely(datum));
3582
3583 return 0;
3584}
3585
3586static int filename_write_helper(void *key, void *data, void *ptr)
3587{
3588 struct filename_trans_key *ft = key;
3589 struct filename_trans_datum *datum;
3590 struct policy_file *fp = ptr;
3591 __le32 buf[3];
3592 int rc;
3593 u32 ndatum, len = strlen(ft->name);
3594
3595 buf[0] = cpu_to_le32(len);
3596 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3597 if (rc)
3598 return rc;
3599
3600 rc = put_entry(buf: ft->name, bytes: sizeof(char), num: len, fp);
3601 if (rc)
3602 return rc;
3603
3604 ndatum = 0;
3605 datum = data;
3606 do {
3607 ndatum++;
3608 datum = datum->next;
3609 } while (unlikely(datum));
3610
3611 buf[0] = cpu_to_le32(ft->ttype);
3612 buf[1] = cpu_to_le32(ft->tclass);
3613 buf[2] = cpu_to_le32(ndatum);
3614 rc = put_entry(buf, bytes: sizeof(u32), num: 3, fp);
3615 if (rc)
3616 return rc;
3617
3618 datum = data;
3619 do {
3620 rc = ebitmap_write(e: &datum->stypes, fp);
3621 if (rc)
3622 return rc;
3623
3624 buf[0] = cpu_to_le32(datum->otype);
3625 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3626 if (rc)
3627 return rc;
3628
3629 datum = datum->next;
3630 } while (unlikely(datum));
3631
3632 return 0;
3633}
3634
3635static int filename_trans_write(struct policydb *p, struct policy_file *fp)
3636{
3637 __le32 buf[1];
3638 int rc;
3639
3640 if (p->policyvers < POLICYDB_VERSION_FILENAME_TRANS)
3641 return 0;
3642
3643 if (p->policyvers < POLICYDB_VERSION_COMP_FTRANS) {
3644 buf[0] = cpu_to_le32(p->compat_filename_trans_count);
3645 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3646 if (rc)
3647 return rc;
3648
3649 rc = hashtab_map(h: &p->filename_trans,
3650 apply: filename_write_helper_compat, args: fp);
3651 } else {
3652 buf[0] = cpu_to_le32(p->filename_trans.nel);
3653 rc = put_entry(buf, bytes: sizeof(u32), num: 1, fp);
3654 if (rc)
3655 return rc;
3656
3657 rc = hashtab_map(h: &p->filename_trans, apply: filename_write_helper, args: fp);
3658 }
3659 return rc;
3660}
3661
3662/*
3663 * Write the configuration data in a policy database
3664 * structure to a policy database binary representation
3665 * file.
3666 */
3667int policydb_write(struct policydb *p, struct policy_file *fp)
3668{
3669 unsigned int num_syms;
3670 int rc;
3671 __le32 buf[4];
3672 u32 config, i;
3673 size_t len;
3674 const struct policydb_compat_info *info;
3675
3676 /*
3677 * refuse to write policy older than compressed avtab
3678 * to simplify the writer. There are other tests dropped
3679 * since we assume this throughout the writer code. Be
3680 * careful if you ever try to remove this restriction
3681 */
3682 if (p->policyvers < POLICYDB_VERSION_AVTAB) {
3683 pr_err("SELinux: refusing to write policy version %d."
3684 " Because it is less than version %d\n",
3685 p->policyvers, POLICYDB_VERSION_AVTAB);
3686 return -EINVAL;
3687 }
3688
3689 config = 0;
3690 if (p->mls_enabled)
3691 config |= POLICYDB_CONFIG_MLS;
3692
3693 if (p->reject_unknown)
3694 config |= REJECT_UNKNOWN;
3695 if (p->allow_unknown)
3696 config |= ALLOW_UNKNOWN;
3697
3698 /* Write the magic number and string identifiers. */
3699 buf[0] = cpu_to_le32(POLICYDB_MAGIC);
3700 len = strlen(POLICYDB_STRING);
3701 buf[1] = cpu_to_le32(len);
3702 rc = put_entry(buf, bytes: sizeof(u32), num: 2, fp);
3703 if (rc)
3704 return rc;
3705 rc = put_entry(POLICYDB_STRING, bytes: 1, num: len, fp);
3706 if (rc)
3707 return rc;
3708
3709 /* Write the version, config, and table sizes. */
3710 info = policydb_lookup_compat(version: p->policyvers);
3711 if (!info) {
3712 pr_err("SELinux: compatibility lookup failed for policy "
3713 "version %d\n",
3714 p->policyvers);
3715 return -EINVAL;
3716 }
3717
3718 buf[0] = cpu_to_le32(p->policyvers);
3719 buf[1] = cpu_to_le32(config);
3720 buf[2] = cpu_to_le32(info->sym_num);
3721 buf[3] = cpu_to_le32(info->ocon_num);
3722
3723 rc = put_entry(buf, bytes: sizeof(u32), num: 4, fp);
3724 if (rc)
3725 return rc;
3726
3727 if (p->policyvers >= POLICYDB_VERSION_POLCAP) {
3728 rc = ebitmap_write(e: &p->policycaps, fp);
3729 if (rc)
3730 return rc;
3731 }
3732
3733 if (p->policyvers >= POLICYDB_VERSION_PERMISSIVE) {
3734 rc = ebitmap_write(e: &p->permissive_map, fp);
3735 if (rc)
3736 return rc;
3737 }
3738
3739 if (p->policyvers >= POLICYDB_VERSION_NEVERAUDIT) {
3740 rc = ebitmap_write(e: &p->neveraudit_map, fp);
3741 if (rc)
3742 return rc;
3743 }
3744
3745 num_syms = info->sym_num;
3746 for (i = 0; i < num_syms; i++) {
3747 struct policy_data pd;
3748
3749 pd.fp = fp;
3750 pd.p = p;
3751
3752 buf[0] = cpu_to_le32(p->symtab[i].nprim);
3753 buf[1] = cpu_to_le32(p->symtab[i].table.nel);
3754
3755 rc = put_entry(buf, bytes: sizeof(u32), num: 2, fp);
3756 if (rc)
3757 return rc;
3758 rc = hashtab_map(h: &p->symtab[i].table, apply: write_f[i], args: &pd);
3759 if (rc)
3760 return rc;
3761 }
3762
3763 rc = avtab_write(p, a: &p->te_avtab, fp);
3764 if (rc)
3765 return rc;
3766
3767 rc = cond_write_list(p, fp);
3768 if (rc)
3769 return rc;
3770
3771 rc = role_trans_write(p, fp);
3772 if (rc)
3773 return rc;
3774
3775 rc = role_allow_write(r: p->role_allow, fp);
3776 if (rc)
3777 return rc;
3778
3779 rc = filename_trans_write(p, fp);
3780 if (rc)
3781 return rc;
3782
3783 rc = ocontext_write(p, info, fp);
3784 if (rc)
3785 return rc;
3786
3787 rc = genfs_write(p, fp);
3788 if (rc)
3789 return rc;
3790
3791 rc = range_write(p, fp);
3792 if (rc)
3793 return rc;
3794
3795 for (i = 0; i < p->p_types.nprim; i++) {
3796 struct ebitmap *e = &p->type_attr_map_array[i];
3797
3798 rc = ebitmap_write(e, fp);
3799 if (rc)
3800 return rc;
3801 }
3802
3803 return 0;
3804}
3805