Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * Implementation of the policy database. | |
3 | * | |
4 | * Author : Stephen Smalley, <sds@epoch.ncsc.mil> | |
5 | */ | |
6 | ||
7 | /* | |
8 | * Updated: Trusted Computer Solutions, Inc. <dgoeddel@trustedcs.com> | |
9 | * | |
10 | * Support for enhanced MLS infrastructure. | |
11 | * | |
12 | * Updated: Frank Mayer <mayerf@tresys.com> and Karl MacMillan <kmacmillan@tresys.com> | |
13 | * | |
2ced3dfd | 14 | * Added conditional policy language extensions |
1da177e4 | 15 | * |
82c21bfa | 16 | * Updated: Hewlett-Packard <paul@paul-moore.com> |
3bb56b25 PM |
17 | * |
18 | * Added support for the policy capability bitmap | |
19 | * | |
20 | * Copyright (C) 2007 Hewlett-Packard Development Company, L.P. | |
1da177e4 LT |
21 | * Copyright (C) 2004-2005 Trusted Computer Solutions, Inc. |
22 | * Copyright (C) 2003 - 2004 Tresys Technology, LLC | |
23 | * This program is free software; you can redistribute it and/or modify | |
2ced3dfd | 24 | * it under the terms of the GNU General Public License as published by |
1da177e4 LT |
25 | * the Free Software Foundation, version 2. |
26 | */ | |
27 | ||
28 | #include <linux/kernel.h> | |
9dc99780 | 29 | #include <linux/sched.h> |
1da177e4 LT |
30 | #include <linux/slab.h> |
31 | #include <linux/string.h> | |
32 | #include <linux/errno.h> | |
d9250dea | 33 | #include <linux/audit.h> |
6371dcd3 | 34 | #include <linux/flex_array.h> |
1da177e4 LT |
35 | #include "security.h" |
36 | ||
37 | #include "policydb.h" | |
38 | #include "conditional.h" | |
39 | #include "mls.h" | |
cee74f47 | 40 | #include "services.h" |
1da177e4 LT |
41 | |
42 | #define _DEBUG_HASHES | |
43 | ||
44 | #ifdef DEBUG_HASHES | |
634a539e | 45 | static const char *symtab_name[SYM_NUM] = { |
1da177e4 LT |
46 | "common prefixes", |
47 | "classes", | |
48 | "roles", | |
49 | "types", | |
50 | "users", | |
51 | "bools", | |
52 | "levels", | |
53 | "categories", | |
54 | }; | |
55 | #endif | |
56 | ||
1da177e4 LT |
57 | static unsigned int symtab_sizes[SYM_NUM] = { |
58 | 2, | |
59 | 32, | |
60 | 16, | |
61 | 512, | |
62 | 128, | |
63 | 16, | |
64 | 16, | |
65 | 16, | |
66 | }; | |
67 | ||
68 | struct policydb_compat_info { | |
69 | int version; | |
70 | int sym_num; | |
71 | int ocon_num; | |
72 | }; | |
73 | ||
74 | /* These need to be updated if SYM_NUM or OCON_NUM changes */ | |
75 | static struct policydb_compat_info policydb_compat[] = { | |
76 | { | |
2ced3dfd EP |
77 | .version = POLICYDB_VERSION_BASE, |
78 | .sym_num = SYM_NUM - 3, | |
79 | .ocon_num = OCON_NUM - 1, | |
1da177e4 LT |
80 | }, |
81 | { | |
2ced3dfd EP |
82 | .version = POLICYDB_VERSION_BOOL, |
83 | .sym_num = SYM_NUM - 2, | |
84 | .ocon_num = OCON_NUM - 1, | |
1da177e4 LT |
85 | }, |
86 | { | |
2ced3dfd EP |
87 | .version = POLICYDB_VERSION_IPV6, |
88 | .sym_num = SYM_NUM - 2, | |
89 | .ocon_num = OCON_NUM, | |
1da177e4 LT |
90 | }, |
91 | { | |
2ced3dfd EP |
92 | .version = POLICYDB_VERSION_NLCLASS, |
93 | .sym_num = SYM_NUM - 2, | |
94 | .ocon_num = OCON_NUM, | |
1da177e4 LT |
95 | }, |
96 | { | |
2ced3dfd EP |
97 | .version = POLICYDB_VERSION_MLS, |
98 | .sym_num = SYM_NUM, | |
99 | .ocon_num = OCON_NUM, | |
1da177e4 | 100 | }, |
782ebb99 | 101 | { |
2ced3dfd EP |
102 | .version = POLICYDB_VERSION_AVTAB, |
103 | .sym_num = SYM_NUM, | |
104 | .ocon_num = OCON_NUM, | |
782ebb99 | 105 | }, |
f3f87714 | 106 | { |
2ced3dfd EP |
107 | .version = POLICYDB_VERSION_RANGETRANS, |
108 | .sym_num = SYM_NUM, | |
109 | .ocon_num = OCON_NUM, | |
f3f87714 | 110 | }, |
3bb56b25 PM |
111 | { |
112 | .version = POLICYDB_VERSION_POLCAP, | |
113 | .sym_num = SYM_NUM, | |
114 | .ocon_num = OCON_NUM, | |
64dbf074 EP |
115 | }, |
116 | { | |
117 | .version = POLICYDB_VERSION_PERMISSIVE, | |
118 | .sym_num = SYM_NUM, | |
119 | .ocon_num = OCON_NUM, | |
d9250dea KK |
120 | }, |
121 | { | |
122 | .version = POLICYDB_VERSION_BOUNDARY, | |
123 | .sym_num = SYM_NUM, | |
124 | .ocon_num = OCON_NUM, | |
125 | }, | |
652bb9b0 EP |
126 | { |
127 | .version = POLICYDB_VERSION_FILENAME_TRANS, | |
128 | .sym_num = SYM_NUM, | |
129 | .ocon_num = OCON_NUM, | |
130 | }, | |
8023976c HC |
131 | { |
132 | .version = POLICYDB_VERSION_ROLETRANS, | |
133 | .sym_num = SYM_NUM, | |
134 | .ocon_num = OCON_NUM, | |
135 | }, | |
aa893269 EP |
136 | { |
137 | .version = POLICYDB_VERSION_NEW_OBJECT_DEFAULTS, | |
138 | .sym_num = SYM_NUM, | |
139 | .ocon_num = OCON_NUM, | |
140 | }, | |
eed7795d EP |
141 | { |
142 | .version = POLICYDB_VERSION_DEFAULT_TYPE, | |
143 | .sym_num = SYM_NUM, | |
144 | .ocon_num = OCON_NUM, | |
145 | }, | |
1da177e4 LT |
146 | }; |
147 | ||
148 | static struct policydb_compat_info *policydb_lookup_compat(int version) | |
149 | { | |
150 | int i; | |
151 | struct policydb_compat_info *info = NULL; | |
152 | ||
32725ad8 | 153 | for (i = 0; i < ARRAY_SIZE(policydb_compat); i++) { |
1da177e4 LT |
154 | if (policydb_compat[i].version == version) { |
155 | info = &policydb_compat[i]; | |
156 | break; | |
157 | } | |
158 | } | |
159 | return info; | |
160 | } | |
161 | ||
162 | /* | |
163 | * Initialize the role table. | |
164 | */ | |
165 | static int roles_init(struct policydb *p) | |
166 | { | |
167 | char *key = NULL; | |
168 | int rc; | |
169 | struct role_datum *role; | |
170 | ||
9398c7f7 | 171 | rc = -ENOMEM; |
89d155ef | 172 | role = kzalloc(sizeof(*role), GFP_KERNEL); |
9398c7f7 | 173 | if (!role) |
1da177e4 | 174 | goto out; |
9398c7f7 EP |
175 | |
176 | rc = -EINVAL; | |
1da177e4 | 177 | role->value = ++p->p_roles.nprim; |
9398c7f7 EP |
178 | if (role->value != OBJECT_R_VAL) |
179 | goto out; | |
180 | ||
181 | rc = -ENOMEM; | |
b3139bbc | 182 | key = kstrdup(OBJECT_R, GFP_KERNEL); |
9398c7f7 EP |
183 | if (!key) |
184 | goto out; | |
185 | ||
1da177e4 LT |
186 | rc = hashtab_insert(p->p_roles.table, key, role); |
187 | if (rc) | |
9398c7f7 | 188 | goto out; |
1da177e4 | 189 | |
9398c7f7 EP |
190 | return 0; |
191 | out: | |
1da177e4 | 192 | kfree(key); |
1da177e4 | 193 | kfree(role); |
9398c7f7 | 194 | return rc; |
1da177e4 LT |
195 | } |
196 | ||
2463c26d EP |
197 | static u32 filenametr_hash(struct hashtab *h, const void *k) |
198 | { | |
199 | const struct filename_trans *ft = k; | |
200 | unsigned long hash; | |
201 | unsigned int byte_num; | |
202 | unsigned char focus; | |
203 | ||
204 | hash = ft->stype ^ ft->ttype ^ ft->tclass; | |
205 | ||
206 | byte_num = 0; | |
207 | while ((focus = ft->name[byte_num++])) | |
208 | hash = partial_name_hash(focus, hash); | |
209 | return hash & (h->size - 1); | |
210 | } | |
211 | ||
212 | static int filenametr_cmp(struct hashtab *h, const void *k1, const void *k2) | |
213 | { | |
214 | const struct filename_trans *ft1 = k1; | |
215 | const struct filename_trans *ft2 = k2; | |
216 | int v; | |
217 | ||
218 | v = ft1->stype - ft2->stype; | |
219 | if (v) | |
220 | return v; | |
221 | ||
222 | v = ft1->ttype - ft2->ttype; | |
223 | if (v) | |
224 | return v; | |
225 | ||
226 | v = ft1->tclass - ft2->tclass; | |
227 | if (v) | |
228 | return v; | |
229 | ||
230 | return strcmp(ft1->name, ft2->name); | |
231 | ||
232 | } | |
233 | ||
2f3e82d6 SS |
234 | static u32 rangetr_hash(struct hashtab *h, const void *k) |
235 | { | |
236 | const struct range_trans *key = k; | |
237 | return (key->source_type + (key->target_type << 3) + | |
238 | (key->target_class << 5)) & (h->size - 1); | |
239 | } | |
240 | ||
241 | static int rangetr_cmp(struct hashtab *h, const void *k1, const void *k2) | |
242 | { | |
243 | const struct range_trans *key1 = k1, *key2 = k2; | |
4419aae1 EP |
244 | int v; |
245 | ||
246 | v = key1->source_type - key2->source_type; | |
247 | if (v) | |
248 | return v; | |
249 | ||
250 | v = key1->target_type - key2->target_type; | |
251 | if (v) | |
252 | return v; | |
253 | ||
254 | v = key1->target_class - key2->target_class; | |
255 | ||
256 | return v; | |
2f3e82d6 SS |
257 | } |
258 | ||
1da177e4 LT |
259 | /* |
260 | * Initialize a policy database structure. | |
261 | */ | |
262 | static int policydb_init(struct policydb *p) | |
263 | { | |
264 | int i, rc; | |
265 | ||
266 | memset(p, 0, sizeof(*p)); | |
267 | ||
268 | for (i = 0; i < SYM_NUM; i++) { | |
269 | rc = symtab_init(&p->symtab[i], symtab_sizes[i]); | |
270 | if (rc) | |
9398c7f7 | 271 | goto out; |
1da177e4 LT |
272 | } |
273 | ||
274 | rc = avtab_init(&p->te_avtab); | |
275 | if (rc) | |
9398c7f7 | 276 | goto out; |
1da177e4 LT |
277 | |
278 | rc = roles_init(p); | |
279 | if (rc) | |
9398c7f7 | 280 | goto out; |
1da177e4 LT |
281 | |
282 | rc = cond_policydb_init(p); | |
283 | if (rc) | |
9398c7f7 | 284 | goto out; |
1da177e4 | 285 | |
2463c26d EP |
286 | p->filename_trans = hashtab_create(filenametr_hash, filenametr_cmp, (1 << 10)); |
287 | if (!p->filename_trans) | |
288 | goto out; | |
289 | ||
2f3e82d6 SS |
290 | p->range_tr = hashtab_create(rangetr_hash, rangetr_cmp, 256); |
291 | if (!p->range_tr) | |
9398c7f7 | 292 | goto out; |
2f3e82d6 | 293 | |
03a4c018 | 294 | ebitmap_init(&p->filename_trans_ttypes); |
3bb56b25 | 295 | ebitmap_init(&p->policycaps); |
64dbf074 | 296 | ebitmap_init(&p->permissive_map); |
3bb56b25 | 297 | |
9398c7f7 | 298 | return 0; |
1da177e4 | 299 | out: |
2463c26d EP |
300 | hashtab_destroy(p->filename_trans); |
301 | hashtab_destroy(p->range_tr); | |
1da177e4 LT |
302 | for (i = 0; i < SYM_NUM; i++) |
303 | hashtab_destroy(p->symtab[i].table); | |
9398c7f7 | 304 | return rc; |
1da177e4 LT |
305 | } |
306 | ||
307 | /* | |
308 | * The following *_index functions are used to | |
309 | * define the val_to_name and val_to_struct arrays | |
310 | * in a policy database structure. The val_to_name | |
311 | * arrays are used when converting security context | |
312 | * structures into string representations. The | |
313 | * val_to_struct arrays are used when the attributes | |
314 | * of a class, role, or user are needed. | |
315 | */ | |
316 | ||
317 | static int common_index(void *key, void *datum, void *datap) | |
318 | { | |
319 | struct policydb *p; | |
320 | struct common_datum *comdatum; | |
ac76c05b | 321 | struct flex_array *fa; |
1da177e4 LT |
322 | |
323 | comdatum = datum; | |
324 | p = datap; | |
325 | if (!comdatum->value || comdatum->value > p->p_commons.nprim) | |
326 | return -EINVAL; | |
ac76c05b EP |
327 | |
328 | fa = p->sym_val_to_name[SYM_COMMONS]; | |
329 | if (flex_array_put_ptr(fa, comdatum->value - 1, key, | |
330 | GFP_KERNEL | __GFP_ZERO)) | |
331 | BUG(); | |
1da177e4 LT |
332 | return 0; |
333 | } | |
334 | ||
335 | static int class_index(void *key, void *datum, void *datap) | |
336 | { | |
337 | struct policydb *p; | |
338 | struct class_datum *cladatum; | |
ac76c05b | 339 | struct flex_array *fa; |
1da177e4 LT |
340 | |
341 | cladatum = datum; | |
342 | p = datap; | |
343 | if (!cladatum->value || cladatum->value > p->p_classes.nprim) | |
344 | return -EINVAL; | |
ac76c05b EP |
345 | fa = p->sym_val_to_name[SYM_CLASSES]; |
346 | if (flex_array_put_ptr(fa, cladatum->value - 1, key, | |
347 | GFP_KERNEL | __GFP_ZERO)) | |
348 | BUG(); | |
1da177e4 LT |
349 | p->class_val_to_struct[cladatum->value - 1] = cladatum; |
350 | return 0; | |
351 | } | |
352 | ||
353 | static int role_index(void *key, void *datum, void *datap) | |
354 | { | |
355 | struct policydb *p; | |
356 | struct role_datum *role; | |
ac76c05b | 357 | struct flex_array *fa; |
1da177e4 LT |
358 | |
359 | role = datum; | |
360 | p = datap; | |
d9250dea KK |
361 | if (!role->value |
362 | || role->value > p->p_roles.nprim | |
363 | || role->bounds > p->p_roles.nprim) | |
1da177e4 | 364 | return -EINVAL; |
ac76c05b EP |
365 | |
366 | fa = p->sym_val_to_name[SYM_ROLES]; | |
367 | if (flex_array_put_ptr(fa, role->value - 1, key, | |
368 | GFP_KERNEL | __GFP_ZERO)) | |
369 | BUG(); | |
1da177e4 LT |
370 | p->role_val_to_struct[role->value - 1] = role; |
371 | return 0; | |
372 | } | |
373 | ||
374 | static int type_index(void *key, void *datum, void *datap) | |
375 | { | |
376 | struct policydb *p; | |
377 | struct type_datum *typdatum; | |
ac76c05b | 378 | struct flex_array *fa; |
1da177e4 LT |
379 | |
380 | typdatum = datum; | |
381 | p = datap; | |
382 | ||
383 | if (typdatum->primary) { | |
d9250dea KK |
384 | if (!typdatum->value |
385 | || typdatum->value > p->p_types.nprim | |
386 | || typdatum->bounds > p->p_types.nprim) | |
1da177e4 | 387 | return -EINVAL; |
ac76c05b EP |
388 | fa = p->sym_val_to_name[SYM_TYPES]; |
389 | if (flex_array_put_ptr(fa, typdatum->value - 1, key, | |
390 | GFP_KERNEL | __GFP_ZERO)) | |
391 | BUG(); | |
392 | ||
393 | fa = p->type_val_to_struct_array; | |
394 | if (flex_array_put_ptr(fa, typdatum->value - 1, typdatum, | |
23bdecb0 EP |
395 | GFP_KERNEL | __GFP_ZERO)) |
396 | BUG(); | |
1da177e4 LT |
397 | } |
398 | ||
399 | return 0; | |
400 | } | |
401 | ||
402 | static int user_index(void *key, void *datum, void *datap) | |
403 | { | |
404 | struct policydb *p; | |
405 | struct user_datum *usrdatum; | |
ac76c05b | 406 | struct flex_array *fa; |
1da177e4 LT |
407 | |
408 | usrdatum = datum; | |
409 | p = datap; | |
d9250dea KK |
410 | if (!usrdatum->value |
411 | || usrdatum->value > p->p_users.nprim | |
412 | || usrdatum->bounds > p->p_users.nprim) | |
1da177e4 | 413 | return -EINVAL; |
ac76c05b EP |
414 | |
415 | fa = p->sym_val_to_name[SYM_USERS]; | |
416 | if (flex_array_put_ptr(fa, usrdatum->value - 1, key, | |
417 | GFP_KERNEL | __GFP_ZERO)) | |
418 | BUG(); | |
1da177e4 LT |
419 | p->user_val_to_struct[usrdatum->value - 1] = usrdatum; |
420 | return 0; | |
421 | } | |
422 | ||
423 | static int sens_index(void *key, void *datum, void *datap) | |
424 | { | |
425 | struct policydb *p; | |
426 | struct level_datum *levdatum; | |
ac76c05b | 427 | struct flex_array *fa; |
1da177e4 LT |
428 | |
429 | levdatum = datum; | |
430 | p = datap; | |
431 | ||
432 | if (!levdatum->isalias) { | |
433 | if (!levdatum->level->sens || | |
434 | levdatum->level->sens > p->p_levels.nprim) | |
435 | return -EINVAL; | |
ac76c05b EP |
436 | fa = p->sym_val_to_name[SYM_LEVELS]; |
437 | if (flex_array_put_ptr(fa, levdatum->level->sens - 1, key, | |
438 | GFP_KERNEL | __GFP_ZERO)) | |
439 | BUG(); | |
1da177e4 LT |
440 | } |
441 | ||
442 | return 0; | |
443 | } | |
444 | ||
445 | static int cat_index(void *key, void *datum, void *datap) | |
446 | { | |
447 | struct policydb *p; | |
448 | struct cat_datum *catdatum; | |
ac76c05b | 449 | struct flex_array *fa; |
1da177e4 LT |
450 | |
451 | catdatum = datum; | |
452 | p = datap; | |
453 | ||
454 | if (!catdatum->isalias) { | |
455 | if (!catdatum->value || catdatum->value > p->p_cats.nprim) | |
456 | return -EINVAL; | |
ac76c05b EP |
457 | fa = p->sym_val_to_name[SYM_CATS]; |
458 | if (flex_array_put_ptr(fa, catdatum->value - 1, key, | |
459 | GFP_KERNEL | __GFP_ZERO)) | |
460 | BUG(); | |
1da177e4 LT |
461 | } |
462 | ||
463 | return 0; | |
464 | } | |
465 | ||
466 | static int (*index_f[SYM_NUM]) (void *key, void *datum, void *datap) = | |
467 | { | |
468 | common_index, | |
469 | class_index, | |
470 | role_index, | |
471 | type_index, | |
472 | user_index, | |
473 | cond_index_bool, | |
474 | sens_index, | |
475 | cat_index, | |
476 | }; | |
477 | ||
1da177e4 | 478 | #ifdef DEBUG_HASHES |
be30b16d | 479 | static void hash_eval(struct hashtab *h, const char *hash_name) |
1da177e4 | 480 | { |
be30b16d | 481 | struct hashtab_info info; |
1da177e4 | 482 | |
be30b16d EP |
483 | hashtab_stat(h, &info); |
484 | printk(KERN_DEBUG "SELinux: %s: %d entries and %d/%d buckets used, " | |
485 | "longest chain length %d\n", hash_name, h->nel, | |
486 | info.slots_used, h->size, info.max_chain_len); | |
1da177e4 | 487 | } |
2f3e82d6 | 488 | |
be30b16d | 489 | static void symtab_hash_eval(struct symtab *s) |
2f3e82d6 | 490 | { |
be30b16d | 491 | int i; |
2f3e82d6 | 492 | |
be30b16d EP |
493 | for (i = 0; i < SYM_NUM; i++) |
494 | hash_eval(s[i].table, symtab_name[i]); | |
2f3e82d6 | 495 | } |
be30b16d | 496 | |
2f3e82d6 | 497 | #else |
be30b16d | 498 | static inline void hash_eval(struct hashtab *h, char *hash_name) |
2f3e82d6 SS |
499 | { |
500 | } | |
1da177e4 LT |
501 | #endif |
502 | ||
503 | /* | |
504 | * Define the other val_to_name and val_to_struct arrays | |
505 | * in a policy database structure. | |
506 | * | |
507 | * Caller must clean up on failure. | |
508 | */ | |
1d9bc6dc | 509 | static int policydb_index(struct policydb *p) |
1da177e4 | 510 | { |
9398c7f7 | 511 | int i, rc; |
1da177e4 | 512 | |
454d972c | 513 | printk(KERN_DEBUG "SELinux: %d users, %d roles, %d types, %d bools", |
1da177e4 | 514 | p->p_users.nprim, p->p_roles.nprim, p->p_types.nprim, p->p_bools.nprim); |
0719aaf5 | 515 | if (p->mls_enabled) |
1da177e4 LT |
516 | printk(", %d sens, %d cats", p->p_levels.nprim, |
517 | p->p_cats.nprim); | |
518 | printk("\n"); | |
519 | ||
454d972c | 520 | printk(KERN_DEBUG "SELinux: %d classes, %d rules\n", |
1da177e4 LT |
521 | p->p_classes.nprim, p->te_avtab.nel); |
522 | ||
523 | #ifdef DEBUG_HASHES | |
524 | avtab_hash_eval(&p->te_avtab, "rules"); | |
525 | symtab_hash_eval(p->symtab); | |
526 | #endif | |
527 | ||
1d9bc6dc EP |
528 | rc = -ENOMEM; |
529 | p->class_val_to_struct = | |
530 | kmalloc(p->p_classes.nprim * sizeof(*(p->class_val_to_struct)), | |
531 | GFP_KERNEL); | |
532 | if (!p->class_val_to_struct) | |
533 | goto out; | |
534 | ||
9398c7f7 | 535 | rc = -ENOMEM; |
1da177e4 LT |
536 | p->role_val_to_struct = |
537 | kmalloc(p->p_roles.nprim * sizeof(*(p->role_val_to_struct)), | |
2ced3dfd | 538 | GFP_KERNEL); |
9398c7f7 | 539 | if (!p->role_val_to_struct) |
1da177e4 | 540 | goto out; |
1da177e4 | 541 | |
9398c7f7 | 542 | rc = -ENOMEM; |
1da177e4 LT |
543 | p->user_val_to_struct = |
544 | kmalloc(p->p_users.nprim * sizeof(*(p->user_val_to_struct)), | |
2ced3dfd | 545 | GFP_KERNEL); |
9398c7f7 | 546 | if (!p->user_val_to_struct) |
1da177e4 | 547 | goto out; |
1da177e4 | 548 | |
23bdecb0 | 549 | /* Yes, I want the sizeof the pointer, not the structure */ |
9398c7f7 | 550 | rc = -ENOMEM; |
23bdecb0 EP |
551 | p->type_val_to_struct_array = flex_array_alloc(sizeof(struct type_datum *), |
552 | p->p_types.nprim, | |
553 | GFP_KERNEL | __GFP_ZERO); | |
554 | if (!p->type_val_to_struct_array) | |
555 | goto out; | |
556 | ||
557 | rc = flex_array_prealloc(p->type_val_to_struct_array, 0, | |
5a3ea878 | 558 | p->p_types.nprim, GFP_KERNEL | __GFP_ZERO); |
23bdecb0 | 559 | if (rc) |
d9250dea | 560 | goto out; |
d9250dea | 561 | |
3ac285ff DB |
562 | rc = cond_init_bool_indexes(p); |
563 | if (rc) | |
1da177e4 | 564 | goto out; |
1da177e4 | 565 | |
1d9bc6dc | 566 | for (i = 0; i < SYM_NUM; i++) { |
9398c7f7 | 567 | rc = -ENOMEM; |
ac76c05b EP |
568 | p->sym_val_to_name[i] = flex_array_alloc(sizeof(char *), |
569 | p->symtab[i].nprim, | |
570 | GFP_KERNEL | __GFP_ZERO); | |
9398c7f7 | 571 | if (!p->sym_val_to_name[i]) |
1da177e4 | 572 | goto out; |
ac76c05b EP |
573 | |
574 | rc = flex_array_prealloc(p->sym_val_to_name[i], | |
5a3ea878 | 575 | 0, p->symtab[i].nprim, |
ac76c05b EP |
576 | GFP_KERNEL | __GFP_ZERO); |
577 | if (rc) | |
578 | goto out; | |
579 | ||
1da177e4 LT |
580 | rc = hashtab_map(p->symtab[i].table, index_f[i], p); |
581 | if (rc) | |
582 | goto out; | |
583 | } | |
9398c7f7 | 584 | rc = 0; |
1da177e4 LT |
585 | out: |
586 | return rc; | |
587 | } | |
588 | ||
589 | /* | |
590 | * The following *_destroy functions are used to | |
591 | * free any memory allocated for each kind of | |
592 | * symbol data in the policy database. | |
593 | */ | |
594 | ||
595 | static int perm_destroy(void *key, void *datum, void *p) | |
596 | { | |
597 | kfree(key); | |
598 | kfree(datum); | |
599 | return 0; | |
600 | } | |
601 | ||
602 | static int common_destroy(void *key, void *datum, void *p) | |
603 | { | |
604 | struct common_datum *comdatum; | |
605 | ||
606 | kfree(key); | |
9398c7f7 EP |
607 | if (datum) { |
608 | comdatum = datum; | |
609 | hashtab_map(comdatum->permissions.table, perm_destroy, NULL); | |
610 | hashtab_destroy(comdatum->permissions.table); | |
611 | } | |
1da177e4 LT |
612 | kfree(datum); |
613 | return 0; | |
614 | } | |
615 | ||
6cbda6b6 | 616 | static int cls_destroy(void *key, void *datum, void *p) |
1da177e4 LT |
617 | { |
618 | struct class_datum *cladatum; | |
619 | struct constraint_node *constraint, *ctemp; | |
620 | struct constraint_expr *e, *etmp; | |
621 | ||
622 | kfree(key); | |
9398c7f7 EP |
623 | if (datum) { |
624 | cladatum = datum; | |
625 | hashtab_map(cladatum->permissions.table, perm_destroy, NULL); | |
626 | hashtab_destroy(cladatum->permissions.table); | |
627 | constraint = cladatum->constraints; | |
628 | while (constraint) { | |
629 | e = constraint->expr; | |
630 | while (e) { | |
631 | ebitmap_destroy(&e->names); | |
632 | etmp = e; | |
633 | e = e->next; | |
634 | kfree(etmp); | |
635 | } | |
636 | ctemp = constraint; | |
637 | constraint = constraint->next; | |
638 | kfree(ctemp); | |
1da177e4 | 639 | } |
9398c7f7 EP |
640 | |
641 | constraint = cladatum->validatetrans; | |
642 | while (constraint) { | |
643 | e = constraint->expr; | |
644 | while (e) { | |
645 | ebitmap_destroy(&e->names); | |
646 | etmp = e; | |
647 | e = e->next; | |
648 | kfree(etmp); | |
649 | } | |
650 | ctemp = constraint; | |
651 | constraint = constraint->next; | |
652 | kfree(ctemp); | |
1da177e4 | 653 | } |
1da177e4 | 654 | |
9398c7f7 EP |
655 | kfree(cladatum->comkey); |
656 | } | |
1da177e4 LT |
657 | kfree(datum); |
658 | return 0; | |
659 | } | |
660 | ||
661 | static int role_destroy(void *key, void *datum, void *p) | |
662 | { | |
663 | struct role_datum *role; | |
664 | ||
665 | kfree(key); | |
9398c7f7 EP |
666 | if (datum) { |
667 | role = datum; | |
668 | ebitmap_destroy(&role->dominates); | |
669 | ebitmap_destroy(&role->types); | |
670 | } | |
1da177e4 LT |
671 | kfree(datum); |
672 | return 0; | |
673 | } | |
674 | ||
675 | static int type_destroy(void *key, void *datum, void *p) | |
676 | { | |
677 | kfree(key); | |
678 | kfree(datum); | |
679 | return 0; | |
680 | } | |
681 | ||
682 | static int user_destroy(void *key, void *datum, void *p) | |
683 | { | |
684 | struct user_datum *usrdatum; | |
685 | ||
686 | kfree(key); | |
9398c7f7 EP |
687 | if (datum) { |
688 | usrdatum = datum; | |
689 | ebitmap_destroy(&usrdatum->roles); | |
690 | ebitmap_destroy(&usrdatum->range.level[0].cat); | |
691 | ebitmap_destroy(&usrdatum->range.level[1].cat); | |
692 | ebitmap_destroy(&usrdatum->dfltlevel.cat); | |
693 | } | |
1da177e4 LT |
694 | kfree(datum); |
695 | return 0; | |
696 | } | |
697 | ||
698 | static int sens_destroy(void *key, void *datum, void *p) | |
699 | { | |
700 | struct level_datum *levdatum; | |
701 | ||
702 | kfree(key); | |
9398c7f7 EP |
703 | if (datum) { |
704 | levdatum = datum; | |
705 | ebitmap_destroy(&levdatum->level->cat); | |
706 | kfree(levdatum->level); | |
707 | } | |
1da177e4 LT |
708 | kfree(datum); |
709 | return 0; | |
710 | } | |
711 | ||
712 | static int cat_destroy(void *key, void *datum, void *p) | |
713 | { | |
714 | kfree(key); | |
715 | kfree(datum); | |
716 | return 0; | |
717 | } | |
718 | ||
719 | static int (*destroy_f[SYM_NUM]) (void *key, void *datum, void *datap) = | |
720 | { | |
721 | common_destroy, | |
6cbda6b6 | 722 | cls_destroy, |
1da177e4 LT |
723 | role_destroy, |
724 | type_destroy, | |
725 | user_destroy, | |
726 | cond_destroy_bool, | |
727 | sens_destroy, | |
728 | cat_destroy, | |
729 | }; | |
730 | ||
2463c26d EP |
731 | static int filenametr_destroy(void *key, void *datum, void *p) |
732 | { | |
733 | struct filename_trans *ft = key; | |
734 | kfree(ft->name); | |
735 | kfree(key); | |
736 | kfree(datum); | |
737 | cond_resched(); | |
738 | return 0; | |
739 | } | |
740 | ||
2f3e82d6 SS |
741 | static int range_tr_destroy(void *key, void *datum, void *p) |
742 | { | |
743 | struct mls_range *rt = datum; | |
744 | kfree(key); | |
745 | ebitmap_destroy(&rt->level[0].cat); | |
746 | ebitmap_destroy(&rt->level[1].cat); | |
747 | kfree(datum); | |
748 | cond_resched(); | |
749 | return 0; | |
750 | } | |
751 | ||
1da177e4 LT |
752 | static void ocontext_destroy(struct ocontext *c, int i) |
753 | { | |
d1b43547 EP |
754 | if (!c) |
755 | return; | |
756 | ||
1da177e4 LT |
757 | context_destroy(&c->context[0]); |
758 | context_destroy(&c->context[1]); | |
759 | if (i == OCON_ISID || i == OCON_FS || | |
760 | i == OCON_NETIF || i == OCON_FSUSE) | |
761 | kfree(c->u.name); | |
762 | kfree(c); | |
763 | } | |
764 | ||
765 | /* | |
766 | * Free any memory allocated by a policy database structure. | |
767 | */ | |
768 | void policydb_destroy(struct policydb *p) | |
769 | { | |
770 | struct ocontext *c, *ctmp; | |
771 | struct genfs *g, *gtmp; | |
772 | int i; | |
782ebb99 SS |
773 | struct role_allow *ra, *lra = NULL; |
774 | struct role_trans *tr, *ltr = NULL; | |
1da177e4 LT |
775 | |
776 | for (i = 0; i < SYM_NUM; i++) { | |
9dc99780 | 777 | cond_resched(); |
1da177e4 LT |
778 | hashtab_map(p->symtab[i].table, destroy_f[i], NULL); |
779 | hashtab_destroy(p->symtab[i].table); | |
780 | } | |
781 | ||
ac76c05b EP |
782 | for (i = 0; i < SYM_NUM; i++) { |
783 | if (p->sym_val_to_name[i]) | |
784 | flex_array_free(p->sym_val_to_name[i]); | |
785 | } | |
1da177e4 | 786 | |
9a5f04bf JJ |
787 | kfree(p->class_val_to_struct); |
788 | kfree(p->role_val_to_struct); | |
789 | kfree(p->user_val_to_struct); | |
23bdecb0 EP |
790 | if (p->type_val_to_struct_array) |
791 | flex_array_free(p->type_val_to_struct_array); | |
1da177e4 LT |
792 | |
793 | avtab_destroy(&p->te_avtab); | |
794 | ||
795 | for (i = 0; i < OCON_NUM; i++) { | |
9dc99780 | 796 | cond_resched(); |
1da177e4 LT |
797 | c = p->ocontexts[i]; |
798 | while (c) { | |
799 | ctmp = c; | |
800 | c = c->next; | |
2ced3dfd | 801 | ocontext_destroy(ctmp, i); |
1da177e4 | 802 | } |
6e8c751e | 803 | p->ocontexts[i] = NULL; |
1da177e4 LT |
804 | } |
805 | ||
806 | g = p->genfs; | |
807 | while (g) { | |
9dc99780 | 808 | cond_resched(); |
1da177e4 LT |
809 | kfree(g->fstype); |
810 | c = g->head; | |
811 | while (c) { | |
812 | ctmp = c; | |
813 | c = c->next; | |
2ced3dfd | 814 | ocontext_destroy(ctmp, OCON_FSUSE); |
1da177e4 LT |
815 | } |
816 | gtmp = g; | |
817 | g = g->next; | |
818 | kfree(gtmp); | |
819 | } | |
6e8c751e | 820 | p->genfs = NULL; |
1da177e4 LT |
821 | |
822 | cond_policydb_destroy(p); | |
823 | ||
782ebb99 | 824 | for (tr = p->role_tr; tr; tr = tr->next) { |
9dc99780 | 825 | cond_resched(); |
a7f988ba | 826 | kfree(ltr); |
782ebb99 SS |
827 | ltr = tr; |
828 | } | |
a7f988ba | 829 | kfree(ltr); |
782ebb99 | 830 | |
2ced3dfd | 831 | for (ra = p->role_allow; ra; ra = ra->next) { |
9dc99780 | 832 | cond_resched(); |
a7f988ba | 833 | kfree(lra); |
782ebb99 SS |
834 | lra = ra; |
835 | } | |
a7f988ba | 836 | kfree(lra); |
782ebb99 | 837 | |
2463c26d EP |
838 | hashtab_map(p->filename_trans, filenametr_destroy, NULL); |
839 | hashtab_destroy(p->filename_trans); | |
840 | ||
2f3e82d6 SS |
841 | hashtab_map(p->range_tr, range_tr_destroy, NULL); |
842 | hashtab_destroy(p->range_tr); | |
782ebb99 | 843 | |
6371dcd3 EP |
844 | if (p->type_attr_map_array) { |
845 | for (i = 0; i < p->p_types.nprim; i++) { | |
846 | struct ebitmap *e; | |
847 | ||
848 | e = flex_array_get(p->type_attr_map_array, i); | |
849 | if (!e) | |
850 | continue; | |
851 | ebitmap_destroy(e); | |
852 | } | |
853 | flex_array_free(p->type_attr_map_array); | |
282c1f5e | 854 | } |
652bb9b0 | 855 | |
03a4c018 | 856 | ebitmap_destroy(&p->filename_trans_ttypes); |
3bb56b25 | 857 | ebitmap_destroy(&p->policycaps); |
64dbf074 | 858 | ebitmap_destroy(&p->permissive_map); |
3f12070e | 859 | |
1da177e4 LT |
860 | return; |
861 | } | |
862 | ||
863 | /* | |
864 | * Load the initial SIDs specified in a policy database | |
865 | * structure into a SID table. | |
866 | */ | |
867 | int policydb_load_isids(struct policydb *p, struct sidtab *s) | |
868 | { | |
869 | struct ocontext *head, *c; | |
870 | int rc; | |
871 | ||
872 | rc = sidtab_init(s); | |
873 | if (rc) { | |
454d972c | 874 | printk(KERN_ERR "SELinux: out of memory on SID table init\n"); |
1da177e4 LT |
875 | goto out; |
876 | } | |
877 | ||
878 | head = p->ocontexts[OCON_ISID]; | |
879 | for (c = head; c; c = c->next) { | |
9398c7f7 | 880 | rc = -EINVAL; |
1da177e4 | 881 | if (!c->context[0].user) { |
9398c7f7 EP |
882 | printk(KERN_ERR "SELinux: SID %s was never defined.\n", |
883 | c->u.name); | |
1da177e4 LT |
884 | goto out; |
885 | } | |
9398c7f7 EP |
886 | |
887 | rc = sidtab_insert(s, c->sid[0], &c->context[0]); | |
888 | if (rc) { | |
889 | printk(KERN_ERR "SELinux: unable to load initial SID %s.\n", | |
890 | c->u.name); | |
1da177e4 LT |
891 | goto out; |
892 | } | |
893 | } | |
9398c7f7 | 894 | rc = 0; |
1da177e4 LT |
895 | out: |
896 | return rc; | |
897 | } | |
898 | ||
45e5421e SS |
899 | int policydb_class_isvalid(struct policydb *p, unsigned int class) |
900 | { | |
901 | if (!class || class > p->p_classes.nprim) | |
902 | return 0; | |
903 | return 1; | |
904 | } | |
905 | ||
906 | int policydb_role_isvalid(struct policydb *p, unsigned int role) | |
907 | { | |
908 | if (!role || role > p->p_roles.nprim) | |
909 | return 0; | |
910 | return 1; | |
911 | } | |
912 | ||
913 | int policydb_type_isvalid(struct policydb *p, unsigned int type) | |
914 | { | |
915 | if (!type || type > p->p_types.nprim) | |
916 | return 0; | |
917 | return 1; | |
918 | } | |
919 | ||
1da177e4 LT |
920 | /* |
921 | * Return 1 if the fields in the security context | |
922 | * structure `c' are valid. Return 0 otherwise. | |
923 | */ | |
924 | int policydb_context_isvalid(struct policydb *p, struct context *c) | |
925 | { | |
926 | struct role_datum *role; | |
927 | struct user_datum *usrdatum; | |
928 | ||
929 | if (!c->role || c->role > p->p_roles.nprim) | |
930 | return 0; | |
931 | ||
932 | if (!c->user || c->user > p->p_users.nprim) | |
933 | return 0; | |
934 | ||
935 | if (!c->type || c->type > p->p_types.nprim) | |
936 | return 0; | |
937 | ||
938 | if (c->role != OBJECT_R_VAL) { | |
939 | /* | |
940 | * Role must be authorized for the type. | |
941 | */ | |
942 | role = p->role_val_to_struct[c->role - 1]; | |
9398c7f7 | 943 | if (!ebitmap_get_bit(&role->types, c->type - 1)) |
1da177e4 LT |
944 | /* role may not be associated with type */ |
945 | return 0; | |
946 | ||
947 | /* | |
948 | * User must be authorized for the role. | |
949 | */ | |
950 | usrdatum = p->user_val_to_struct[c->user - 1]; | |
951 | if (!usrdatum) | |
952 | return 0; | |
953 | ||
9398c7f7 | 954 | if (!ebitmap_get_bit(&usrdatum->roles, c->role - 1)) |
1da177e4 LT |
955 | /* user may not be associated with role */ |
956 | return 0; | |
957 | } | |
958 | ||
959 | if (!mls_context_isvalid(p, c)) | |
960 | return 0; | |
961 | ||
962 | return 1; | |
963 | } | |
964 | ||
965 | /* | |
966 | * Read a MLS range structure from a policydb binary | |
967 | * representation file. | |
968 | */ | |
969 | static int mls_read_range_helper(struct mls_range *r, void *fp) | |
970 | { | |
b5bf6c55 AD |
971 | __le32 buf[2]; |
972 | u32 items; | |
1da177e4 LT |
973 | int rc; |
974 | ||
975 | rc = next_entry(buf, fp, sizeof(u32)); | |
9398c7f7 | 976 | if (rc) |
1da177e4 LT |
977 | goto out; |
978 | ||
9398c7f7 | 979 | rc = -EINVAL; |
1da177e4 LT |
980 | items = le32_to_cpu(buf[0]); |
981 | if (items > ARRAY_SIZE(buf)) { | |
454d972c | 982 | printk(KERN_ERR "SELinux: mls: range overflow\n"); |
1da177e4 LT |
983 | goto out; |
984 | } | |
9398c7f7 | 985 | |
1da177e4 | 986 | rc = next_entry(buf, fp, sizeof(u32) * items); |
9398c7f7 | 987 | if (rc) { |
454d972c | 988 | printk(KERN_ERR "SELinux: mls: truncated range\n"); |
1da177e4 LT |
989 | goto out; |
990 | } | |
9398c7f7 | 991 | |
1da177e4 LT |
992 | r->level[0].sens = le32_to_cpu(buf[0]); |
993 | if (items > 1) | |
994 | r->level[1].sens = le32_to_cpu(buf[1]); | |
995 | else | |
996 | r->level[1].sens = r->level[0].sens; | |
997 | ||
998 | rc = ebitmap_read(&r->level[0].cat, fp); | |
999 | if (rc) { | |
9398c7f7 | 1000 | printk(KERN_ERR "SELinux: mls: error reading low categories\n"); |
1da177e4 LT |
1001 | goto out; |
1002 | } | |
1003 | if (items > 1) { | |
1004 | rc = ebitmap_read(&r->level[1].cat, fp); | |
1005 | if (rc) { | |
9398c7f7 | 1006 | printk(KERN_ERR "SELinux: mls: error reading high categories\n"); |
1da177e4 LT |
1007 | goto bad_high; |
1008 | } | |
1009 | } else { | |
1010 | rc = ebitmap_cpy(&r->level[1].cat, &r->level[0].cat); | |
1011 | if (rc) { | |
454d972c | 1012 | printk(KERN_ERR "SELinux: mls: out of memory\n"); |
1da177e4 LT |
1013 | goto bad_high; |
1014 | } | |
1015 | } | |
1016 | ||
9398c7f7 | 1017 | return 0; |
1da177e4 LT |
1018 | bad_high: |
1019 | ebitmap_destroy(&r->level[0].cat); | |
9398c7f7 EP |
1020 | out: |
1021 | return rc; | |
1da177e4 LT |
1022 | } |
1023 | ||
1024 | /* | |
1025 | * Read and validate a security context structure | |
1026 | * from a policydb binary representation file. | |
1027 | */ | |
1028 | static int context_read_and_validate(struct context *c, | |
1029 | struct policydb *p, | |
1030 | void *fp) | |
1031 | { | |
b5bf6c55 | 1032 | __le32 buf[3]; |
1da177e4 LT |
1033 | int rc; |
1034 | ||
1035 | rc = next_entry(buf, fp, sizeof buf); | |
9398c7f7 | 1036 | if (rc) { |
454d972c | 1037 | printk(KERN_ERR "SELinux: context truncated\n"); |
1da177e4 LT |
1038 | goto out; |
1039 | } | |
1040 | c->user = le32_to_cpu(buf[0]); | |
1041 | c->role = le32_to_cpu(buf[1]); | |
1042 | c->type = le32_to_cpu(buf[2]); | |
1043 | if (p->policyvers >= POLICYDB_VERSION_MLS) { | |
9398c7f7 EP |
1044 | rc = mls_read_range_helper(&c->range, fp); |
1045 | if (rc) { | |
1046 | printk(KERN_ERR "SELinux: error reading MLS range of context\n"); | |
1da177e4 LT |
1047 | goto out; |
1048 | } | |
1049 | } | |
1050 | ||
9398c7f7 | 1051 | rc = -EINVAL; |
1da177e4 | 1052 | if (!policydb_context_isvalid(p, c)) { |
454d972c | 1053 | printk(KERN_ERR "SELinux: invalid security context\n"); |
1da177e4 | 1054 | context_destroy(c); |
9398c7f7 | 1055 | goto out; |
1da177e4 | 1056 | } |
9398c7f7 | 1057 | rc = 0; |
1da177e4 LT |
1058 | out: |
1059 | return rc; | |
1060 | } | |
1061 | ||
1062 | /* | |
1063 | * The following *_read functions are used to | |
1064 | * read the symbol data from a policy database | |
1065 | * binary representation file. | |
1066 | */ | |
1067 | ||
1068 | static int perm_read(struct policydb *p, struct hashtab *h, void *fp) | |
1069 | { | |
1070 | char *key = NULL; | |
1071 | struct perm_datum *perdatum; | |
1072 | int rc; | |
b5bf6c55 AD |
1073 | __le32 buf[2]; |
1074 | u32 len; | |
1da177e4 | 1075 | |
9398c7f7 | 1076 | rc = -ENOMEM; |
89d155ef | 1077 | perdatum = kzalloc(sizeof(*perdatum), GFP_KERNEL); |
9398c7f7 EP |
1078 | if (!perdatum) |
1079 | goto bad; | |
1da177e4 LT |
1080 | |
1081 | rc = next_entry(buf, fp, sizeof buf); | |
9398c7f7 | 1082 | if (rc) |
1da177e4 LT |
1083 | goto bad; |
1084 | ||
1085 | len = le32_to_cpu(buf[0]); | |
1086 | perdatum->value = le32_to_cpu(buf[1]); | |
1087 | ||
9398c7f7 | 1088 | rc = -ENOMEM; |
2ced3dfd | 1089 | key = kmalloc(len + 1, GFP_KERNEL); |
9398c7f7 | 1090 | if (!key) |
1da177e4 | 1091 | goto bad; |
9398c7f7 | 1092 | |
1da177e4 | 1093 | rc = next_entry(key, fp, len); |
9398c7f7 | 1094 | if (rc) |
1da177e4 | 1095 | goto bad; |
df4ea865 | 1096 | key[len] = '\0'; |
1da177e4 LT |
1097 | |
1098 | rc = hashtab_insert(h, key, perdatum); | |
1099 | if (rc) | |
1100 | goto bad; | |
9398c7f7 EP |
1101 | |
1102 | return 0; | |
1da177e4 LT |
1103 | bad: |
1104 | perm_destroy(key, perdatum, NULL); | |
9398c7f7 | 1105 | return rc; |
1da177e4 LT |
1106 | } |
1107 | ||
1108 | static int common_read(struct policydb *p, struct hashtab *h, void *fp) | |
1109 | { | |
1110 | char *key = NULL; | |
1111 | struct common_datum *comdatum; | |
b5bf6c55 AD |
1112 | __le32 buf[4]; |
1113 | u32 len, nel; | |
1da177e4 LT |
1114 | int i, rc; |
1115 | ||
9398c7f7 | 1116 | rc = -ENOMEM; |
89d155ef | 1117 | comdatum = kzalloc(sizeof(*comdatum), GFP_KERNEL); |
9398c7f7 EP |
1118 | if (!comdatum) |
1119 | goto bad; | |
1da177e4 LT |
1120 | |
1121 | rc = next_entry(buf, fp, sizeof buf); | |
9398c7f7 | 1122 | if (rc) |
1da177e4 LT |
1123 | goto bad; |
1124 | ||
1125 | len = le32_to_cpu(buf[0]); | |
1126 | comdatum->value = le32_to_cpu(buf[1]); | |
1127 | ||
1128 | rc = symtab_init(&comdatum->permissions, PERM_SYMTAB_SIZE); | |
1129 | if (rc) | |
1130 | goto bad; | |
1131 | comdatum->permissions.nprim = le32_to_cpu(buf[2]); | |
1132 | nel = le32_to_cpu(buf[3]); | |
1133 | ||
9398c7f7 | 1134 | rc = -ENOMEM; |
2ced3dfd | 1135 | key = kmalloc(len + 1, GFP_KERNEL); |
9398c7f7 | 1136 | if (!key) |
1da177e4 | 1137 | goto bad; |
9398c7f7 | 1138 | |
1da177e4 | 1139 | rc = next_entry(key, fp, len); |
9398c7f7 | 1140 | if (rc) |
1da177e4 | 1141 | goto bad; |
df4ea865 | 1142 | key[len] = '\0'; |
1da177e4 LT |
1143 | |
1144 | for (i = 0; i < nel; i++) { | |
1145 | rc = perm_read(p, comdatum->permissions.table, fp); | |
1146 | if (rc) | |
1147 | goto bad; | |
1148 | } | |
1149 | ||
1150 | rc = hashtab_insert(h, key, comdatum); | |
1151 | if (rc) | |
1152 | goto bad; | |
9398c7f7 | 1153 | return 0; |
1da177e4 LT |
1154 | bad: |
1155 | common_destroy(key, comdatum, NULL); | |
9398c7f7 | 1156 | return rc; |
1da177e4 LT |
1157 | } |
1158 | ||
1159 | static int read_cons_helper(struct constraint_node **nodep, int ncons, | |
2ced3dfd | 1160 | int allowxtarget, void *fp) |
1da177e4 LT |
1161 | { |
1162 | struct constraint_node *c, *lc; | |
1163 | struct constraint_expr *e, *le; | |
b5bf6c55 AD |
1164 | __le32 buf[3]; |
1165 | u32 nexpr; | |
1da177e4 LT |
1166 | int rc, i, j, depth; |
1167 | ||
1168 | lc = NULL; | |
1169 | for (i = 0; i < ncons; i++) { | |
89d155ef | 1170 | c = kzalloc(sizeof(*c), GFP_KERNEL); |
1da177e4 LT |
1171 | if (!c) |
1172 | return -ENOMEM; | |
1da177e4 | 1173 | |
2ced3dfd | 1174 | if (lc) |
1da177e4 | 1175 | lc->next = c; |
2ced3dfd | 1176 | else |
1da177e4 | 1177 | *nodep = c; |
1da177e4 LT |
1178 | |
1179 | rc = next_entry(buf, fp, (sizeof(u32) * 2)); | |
9398c7f7 | 1180 | if (rc) |
1da177e4 LT |
1181 | return rc; |
1182 | c->permissions = le32_to_cpu(buf[0]); | |
1183 | nexpr = le32_to_cpu(buf[1]); | |
1184 | le = NULL; | |
1185 | depth = -1; | |
1186 | for (j = 0; j < nexpr; j++) { | |
89d155ef | 1187 | e = kzalloc(sizeof(*e), GFP_KERNEL); |
1da177e4 LT |
1188 | if (!e) |
1189 | return -ENOMEM; | |
1da177e4 | 1190 | |
2ced3dfd | 1191 | if (le) |
1da177e4 | 1192 | le->next = e; |
2ced3dfd | 1193 | else |
1da177e4 | 1194 | c->expr = e; |
1da177e4 LT |
1195 | |
1196 | rc = next_entry(buf, fp, (sizeof(u32) * 3)); | |
9398c7f7 | 1197 | if (rc) |
1da177e4 LT |
1198 | return rc; |
1199 | e->expr_type = le32_to_cpu(buf[0]); | |
1200 | e->attr = le32_to_cpu(buf[1]); | |
1201 | e->op = le32_to_cpu(buf[2]); | |
1202 | ||
1203 | switch (e->expr_type) { | |
1204 | case CEXPR_NOT: | |
1205 | if (depth < 0) | |
1206 | return -EINVAL; | |
1207 | break; | |
1208 | case CEXPR_AND: | |
1209 | case CEXPR_OR: | |
1210 | if (depth < 1) | |
1211 | return -EINVAL; | |
1212 | depth--; | |
1213 | break; | |
1214 | case CEXPR_ATTR: | |
1215 | if (depth == (CEXPR_MAXDEPTH - 1)) | |
1216 | return -EINVAL; | |
1217 | depth++; | |
1218 | break; | |
1219 | case CEXPR_NAMES: | |
1220 | if (!allowxtarget && (e->attr & CEXPR_XTARGET)) | |
1221 | return -EINVAL; | |
1222 | if (depth == (CEXPR_MAXDEPTH - 1)) | |
1223 | return -EINVAL; | |
1224 | depth++; | |
9398c7f7 EP |
1225 | rc = ebitmap_read(&e->names, fp); |
1226 | if (rc) | |
1227 | return rc; | |
1da177e4 LT |
1228 | break; |
1229 | default: | |
1230 | return -EINVAL; | |
1231 | } | |
1232 | le = e; | |
1233 | } | |
1234 | if (depth != 0) | |
1235 | return -EINVAL; | |
1236 | lc = c; | |
1237 | } | |
1238 | ||
1239 | return 0; | |
1240 | } | |
1241 | ||
1242 | static int class_read(struct policydb *p, struct hashtab *h, void *fp) | |
1243 | { | |
1244 | char *key = NULL; | |
1245 | struct class_datum *cladatum; | |
b5bf6c55 AD |
1246 | __le32 buf[6]; |
1247 | u32 len, len2, ncons, nel; | |
1da177e4 LT |
1248 | int i, rc; |
1249 | ||
9398c7f7 | 1250 | rc = -ENOMEM; |
89d155ef | 1251 | cladatum = kzalloc(sizeof(*cladatum), GFP_KERNEL); |
9398c7f7 EP |
1252 | if (!cladatum) |
1253 | goto bad; | |
1da177e4 LT |
1254 | |
1255 | rc = next_entry(buf, fp, sizeof(u32)*6); | |
9398c7f7 | 1256 | if (rc) |
1da177e4 LT |
1257 | goto bad; |
1258 | ||
1259 | len = le32_to_cpu(buf[0]); | |
1260 | len2 = le32_to_cpu(buf[1]); | |
1261 | cladatum->value = le32_to_cpu(buf[2]); | |
1262 | ||
1263 | rc = symtab_init(&cladatum->permissions, PERM_SYMTAB_SIZE); | |
1264 | if (rc) | |
1265 | goto bad; | |
1266 | cladatum->permissions.nprim = le32_to_cpu(buf[3]); | |
1267 | nel = le32_to_cpu(buf[4]); | |
1268 | ||
1269 | ncons = le32_to_cpu(buf[5]); | |
1270 | ||
9398c7f7 | 1271 | rc = -ENOMEM; |
2ced3dfd | 1272 | key = kmalloc(len + 1, GFP_KERNEL); |
9398c7f7 | 1273 | if (!key) |
1da177e4 | 1274 | goto bad; |
9398c7f7 | 1275 | |
1da177e4 | 1276 | rc = next_entry(key, fp, len); |
9398c7f7 | 1277 | if (rc) |
1da177e4 | 1278 | goto bad; |
df4ea865 | 1279 | key[len] = '\0'; |
1da177e4 LT |
1280 | |
1281 | if (len2) { | |
9398c7f7 | 1282 | rc = -ENOMEM; |
2ced3dfd | 1283 | cladatum->comkey = kmalloc(len2 + 1, GFP_KERNEL); |
9398c7f7 | 1284 | if (!cladatum->comkey) |
1da177e4 | 1285 | goto bad; |
1da177e4 | 1286 | rc = next_entry(cladatum->comkey, fp, len2); |
9398c7f7 | 1287 | if (rc) |
1da177e4 | 1288 | goto bad; |
df4ea865 | 1289 | cladatum->comkey[len2] = '\0'; |
1da177e4 | 1290 | |
9398c7f7 EP |
1291 | rc = -EINVAL; |
1292 | cladatum->comdatum = hashtab_search(p->p_commons.table, cladatum->comkey); | |
1da177e4 | 1293 | if (!cladatum->comdatum) { |
9398c7f7 | 1294 | printk(KERN_ERR "SELinux: unknown common %s\n", cladatum->comkey); |
1da177e4 LT |
1295 | goto bad; |
1296 | } | |
1297 | } | |
1298 | for (i = 0; i < nel; i++) { | |
1299 | rc = perm_read(p, cladatum->permissions.table, fp); | |
1300 | if (rc) | |
1301 | goto bad; | |
1302 | } | |
1303 | ||
1304 | rc = read_cons_helper(&cladatum->constraints, ncons, 0, fp); | |
1305 | if (rc) | |
1306 | goto bad; | |
1307 | ||
1308 | if (p->policyvers >= POLICYDB_VERSION_VALIDATETRANS) { | |
1309 | /* grab the validatetrans rules */ | |
1310 | rc = next_entry(buf, fp, sizeof(u32)); | |
9398c7f7 | 1311 | if (rc) |
1da177e4 LT |
1312 | goto bad; |
1313 | ncons = le32_to_cpu(buf[0]); | |
1314 | rc = read_cons_helper(&cladatum->validatetrans, ncons, 1, fp); | |
1315 | if (rc) | |
1316 | goto bad; | |
1317 | } | |
1318 | ||
aa893269 EP |
1319 | if (p->policyvers >= POLICYDB_VERSION_NEW_OBJECT_DEFAULTS) { |
1320 | rc = next_entry(buf, fp, sizeof(u32) * 3); | |
1321 | if (rc) | |
1322 | goto bad; | |
1323 | ||
1324 | cladatum->default_user = le32_to_cpu(buf[0]); | |
1325 | cladatum->default_role = le32_to_cpu(buf[1]); | |
1326 | cladatum->default_range = le32_to_cpu(buf[2]); | |
1327 | } | |
1328 | ||
eed7795d EP |
1329 | if (p->policyvers >= POLICYDB_VERSION_DEFAULT_TYPE) { |
1330 | rc = next_entry(buf, fp, sizeof(u32) * 1); | |
1331 | if (rc) | |
1332 | goto bad; | |
1333 | cladatum->default_type = le32_to_cpu(buf[0]); | |
1334 | } | |
1335 | ||
1da177e4 LT |
1336 | rc = hashtab_insert(h, key, cladatum); |
1337 | if (rc) | |
1338 | goto bad; | |
1339 | ||
9398c7f7 | 1340 | return 0; |
1da177e4 | 1341 | bad: |
6cbda6b6 | 1342 | cls_destroy(key, cladatum, NULL); |
9398c7f7 | 1343 | return rc; |
1da177e4 LT |
1344 | } |
1345 | ||
1346 | static int role_read(struct policydb *p, struct hashtab *h, void *fp) | |
1347 | { | |
1348 | char *key = NULL; | |
1349 | struct role_datum *role; | |
d9250dea KK |
1350 | int rc, to_read = 2; |
1351 | __le32 buf[3]; | |
b5bf6c55 | 1352 | u32 len; |
1da177e4 | 1353 | |
9398c7f7 | 1354 | rc = -ENOMEM; |
89d155ef | 1355 | role = kzalloc(sizeof(*role), GFP_KERNEL); |
9398c7f7 EP |
1356 | if (!role) |
1357 | goto bad; | |
1da177e4 | 1358 | |
d9250dea KK |
1359 | if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) |
1360 | to_read = 3; | |
1361 | ||
1362 | rc = next_entry(buf, fp, sizeof(buf[0]) * to_read); | |
9398c7f7 | 1363 | if (rc) |
1da177e4 LT |
1364 | goto bad; |
1365 | ||
1366 | len = le32_to_cpu(buf[0]); | |
1367 | role->value = le32_to_cpu(buf[1]); | |
d9250dea KK |
1368 | if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) |
1369 | role->bounds = le32_to_cpu(buf[2]); | |
1da177e4 | 1370 | |
9398c7f7 | 1371 | rc = -ENOMEM; |
2ced3dfd | 1372 | key = kmalloc(len + 1, GFP_KERNEL); |
9398c7f7 | 1373 | if (!key) |
1da177e4 | 1374 | goto bad; |
9398c7f7 | 1375 | |
1da177e4 | 1376 | rc = next_entry(key, fp, len); |
9398c7f7 | 1377 | if (rc) |
1da177e4 | 1378 | goto bad; |
df4ea865 | 1379 | key[len] = '\0'; |
1da177e4 LT |
1380 | |
1381 | rc = ebitmap_read(&role->dominates, fp); | |
1382 | if (rc) | |
1383 | goto bad; | |
1384 | ||
1385 | rc = ebitmap_read(&role->types, fp); | |
1386 | if (rc) | |
1387 | goto bad; | |
1388 | ||
1389 | if (strcmp(key, OBJECT_R) == 0) { | |
9398c7f7 | 1390 | rc = -EINVAL; |
1da177e4 | 1391 | if (role->value != OBJECT_R_VAL) { |
744ba35e | 1392 | printk(KERN_ERR "SELinux: Role %s has wrong value %d\n", |
1da177e4 | 1393 | OBJECT_R, role->value); |
1da177e4 LT |
1394 | goto bad; |
1395 | } | |
1396 | rc = 0; | |
1397 | goto bad; | |
1398 | } | |
1399 | ||
1400 | rc = hashtab_insert(h, key, role); | |
1401 | if (rc) | |
1402 | goto bad; | |
9398c7f7 | 1403 | return 0; |
1da177e4 LT |
1404 | bad: |
1405 | role_destroy(key, role, NULL); | |
9398c7f7 | 1406 | return rc; |
1da177e4 LT |
1407 | } |
1408 | ||
1409 | static int type_read(struct policydb *p, struct hashtab *h, void *fp) | |
1410 | { | |
1411 | char *key = NULL; | |
1412 | struct type_datum *typdatum; | |
d9250dea KK |
1413 | int rc, to_read = 3; |
1414 | __le32 buf[4]; | |
b5bf6c55 | 1415 | u32 len; |
1da177e4 | 1416 | |
9398c7f7 | 1417 | rc = -ENOMEM; |
2ced3dfd | 1418 | typdatum = kzalloc(sizeof(*typdatum), GFP_KERNEL); |
9398c7f7 EP |
1419 | if (!typdatum) |
1420 | goto bad; | |
1da177e4 | 1421 | |
d9250dea KK |
1422 | if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) |
1423 | to_read = 4; | |
1424 | ||
1425 | rc = next_entry(buf, fp, sizeof(buf[0]) * to_read); | |
9398c7f7 | 1426 | if (rc) |
1da177e4 LT |
1427 | goto bad; |
1428 | ||
1429 | len = le32_to_cpu(buf[0]); | |
1430 | typdatum->value = le32_to_cpu(buf[1]); | |
d9250dea KK |
1431 | if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) { |
1432 | u32 prop = le32_to_cpu(buf[2]); | |
1433 | ||
1434 | if (prop & TYPEDATUM_PROPERTY_PRIMARY) | |
1435 | typdatum->primary = 1; | |
1436 | if (prop & TYPEDATUM_PROPERTY_ATTRIBUTE) | |
1437 | typdatum->attribute = 1; | |
1438 | ||
1439 | typdatum->bounds = le32_to_cpu(buf[3]); | |
1440 | } else { | |
1441 | typdatum->primary = le32_to_cpu(buf[2]); | |
1442 | } | |
1da177e4 | 1443 | |
9398c7f7 | 1444 | rc = -ENOMEM; |
2ced3dfd | 1445 | key = kmalloc(len + 1, GFP_KERNEL); |
9398c7f7 | 1446 | if (!key) |
1da177e4 | 1447 | goto bad; |
1da177e4 | 1448 | rc = next_entry(key, fp, len); |
9398c7f7 | 1449 | if (rc) |
1da177e4 | 1450 | goto bad; |
df4ea865 | 1451 | key[len] = '\0'; |
1da177e4 LT |
1452 | |
1453 | rc = hashtab_insert(h, key, typdatum); | |
1454 | if (rc) | |
1455 | goto bad; | |
9398c7f7 | 1456 | return 0; |
1da177e4 LT |
1457 | bad: |
1458 | type_destroy(key, typdatum, NULL); | |
9398c7f7 | 1459 | return rc; |
1da177e4 LT |
1460 | } |
1461 | ||
1462 | ||
1463 | /* | |
1464 | * Read a MLS level structure from a policydb binary | |
1465 | * representation file. | |
1466 | */ | |
1467 | static int mls_read_level(struct mls_level *lp, void *fp) | |
1468 | { | |
b5bf6c55 | 1469 | __le32 buf[1]; |
1da177e4 LT |
1470 | int rc; |
1471 | ||
1472 | memset(lp, 0, sizeof(*lp)); | |
1473 | ||
1474 | rc = next_entry(buf, fp, sizeof buf); | |
9398c7f7 | 1475 | if (rc) { |
454d972c | 1476 | printk(KERN_ERR "SELinux: mls: truncated level\n"); |
9398c7f7 | 1477 | return rc; |
1da177e4 LT |
1478 | } |
1479 | lp->sens = le32_to_cpu(buf[0]); | |
1480 | ||
9398c7f7 EP |
1481 | rc = ebitmap_read(&lp->cat, fp); |
1482 | if (rc) { | |
1483 | printk(KERN_ERR "SELinux: mls: error reading level categories\n"); | |
1484 | return rc; | |
1da177e4 LT |
1485 | } |
1486 | return 0; | |
1da177e4 LT |
1487 | } |
1488 | ||
1489 | static int user_read(struct policydb *p, struct hashtab *h, void *fp) | |
1490 | { | |
1491 | char *key = NULL; | |
1492 | struct user_datum *usrdatum; | |
d9250dea KK |
1493 | int rc, to_read = 2; |
1494 | __le32 buf[3]; | |
b5bf6c55 | 1495 | u32 len; |
1da177e4 | 1496 | |
9398c7f7 | 1497 | rc = -ENOMEM; |
89d155ef | 1498 | usrdatum = kzalloc(sizeof(*usrdatum), GFP_KERNEL); |
9398c7f7 EP |
1499 | if (!usrdatum) |
1500 | goto bad; | |
1da177e4 | 1501 | |
d9250dea KK |
1502 | if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) |
1503 | to_read = 3; | |
1504 | ||
1505 | rc = next_entry(buf, fp, sizeof(buf[0]) * to_read); | |
9398c7f7 | 1506 | if (rc) |
1da177e4 LT |
1507 | goto bad; |
1508 | ||
1509 | len = le32_to_cpu(buf[0]); | |
1510 | usrdatum->value = le32_to_cpu(buf[1]); | |
d9250dea KK |
1511 | if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) |
1512 | usrdatum->bounds = le32_to_cpu(buf[2]); | |
1da177e4 | 1513 | |
9398c7f7 | 1514 | rc = -ENOMEM; |
2ced3dfd | 1515 | key = kmalloc(len + 1, GFP_KERNEL); |
9398c7f7 | 1516 | if (!key) |
1da177e4 | 1517 | goto bad; |
1da177e4 | 1518 | rc = next_entry(key, fp, len); |
9398c7f7 | 1519 | if (rc) |
1da177e4 | 1520 | goto bad; |
df4ea865 | 1521 | key[len] = '\0'; |
1da177e4 LT |
1522 | |
1523 | rc = ebitmap_read(&usrdatum->roles, fp); | |
1524 | if (rc) | |
1525 | goto bad; | |
1526 | ||
1527 | if (p->policyvers >= POLICYDB_VERSION_MLS) { | |
1528 | rc = mls_read_range_helper(&usrdatum->range, fp); | |
1529 | if (rc) | |
1530 | goto bad; | |
1531 | rc = mls_read_level(&usrdatum->dfltlevel, fp); | |
1532 | if (rc) | |
1533 | goto bad; | |
1534 | } | |
1535 | ||
1536 | rc = hashtab_insert(h, key, usrdatum); | |
1537 | if (rc) | |
1538 | goto bad; | |
9398c7f7 | 1539 | return 0; |
1da177e4 LT |
1540 | bad: |
1541 | user_destroy(key, usrdatum, NULL); | |
9398c7f7 | 1542 | return rc; |
1da177e4 LT |
1543 | } |
1544 | ||
1545 | static int sens_read(struct policydb *p, struct hashtab *h, void *fp) | |
1546 | { | |
1547 | char *key = NULL; | |
1548 | struct level_datum *levdatum; | |
1549 | int rc; | |
b5bf6c55 AD |
1550 | __le32 buf[2]; |
1551 | u32 len; | |
1da177e4 | 1552 | |
9398c7f7 | 1553 | rc = -ENOMEM; |
89d155ef | 1554 | levdatum = kzalloc(sizeof(*levdatum), GFP_ATOMIC); |
9398c7f7 EP |
1555 | if (!levdatum) |
1556 | goto bad; | |
1da177e4 LT |
1557 | |
1558 | rc = next_entry(buf, fp, sizeof buf); | |
9398c7f7 | 1559 | if (rc) |
1da177e4 LT |
1560 | goto bad; |
1561 | ||
1562 | len = le32_to_cpu(buf[0]); | |
1563 | levdatum->isalias = le32_to_cpu(buf[1]); | |
1564 | ||
9398c7f7 | 1565 | rc = -ENOMEM; |
2ced3dfd | 1566 | key = kmalloc(len + 1, GFP_ATOMIC); |
9398c7f7 | 1567 | if (!key) |
1da177e4 | 1568 | goto bad; |
1da177e4 | 1569 | rc = next_entry(key, fp, len); |
9398c7f7 | 1570 | if (rc) |
1da177e4 | 1571 | goto bad; |
df4ea865 | 1572 | key[len] = '\0'; |
1da177e4 | 1573 | |
9398c7f7 | 1574 | rc = -ENOMEM; |
1da177e4 | 1575 | levdatum->level = kmalloc(sizeof(struct mls_level), GFP_ATOMIC); |
9398c7f7 | 1576 | if (!levdatum->level) |
1da177e4 | 1577 | goto bad; |
9398c7f7 EP |
1578 | |
1579 | rc = mls_read_level(levdatum->level, fp); | |
1580 | if (rc) | |
1da177e4 | 1581 | goto bad; |
1da177e4 LT |
1582 | |
1583 | rc = hashtab_insert(h, key, levdatum); | |
1584 | if (rc) | |
1585 | goto bad; | |
9398c7f7 | 1586 | return 0; |
1da177e4 LT |
1587 | bad: |
1588 | sens_destroy(key, levdatum, NULL); | |
9398c7f7 | 1589 | return rc; |
1da177e4 LT |
1590 | } |
1591 | ||
1592 | static int cat_read(struct policydb *p, struct hashtab *h, void *fp) | |
1593 | { | |
1594 | char *key = NULL; | |
1595 | struct cat_datum *catdatum; | |
1596 | int rc; | |
b5bf6c55 AD |
1597 | __le32 buf[3]; |
1598 | u32 len; | |
1da177e4 | 1599 | |
9398c7f7 | 1600 | rc = -ENOMEM; |
89d155ef | 1601 | catdatum = kzalloc(sizeof(*catdatum), GFP_ATOMIC); |
9398c7f7 EP |
1602 | if (!catdatum) |
1603 | goto bad; | |
1da177e4 LT |
1604 | |
1605 | rc = next_entry(buf, fp, sizeof buf); | |
9398c7f7 | 1606 | if (rc) |
1da177e4 LT |
1607 | goto bad; |
1608 | ||
1609 | len = le32_to_cpu(buf[0]); | |
1610 | catdatum->value = le32_to_cpu(buf[1]); | |
1611 | catdatum->isalias = le32_to_cpu(buf[2]); | |
1612 | ||
9398c7f7 | 1613 | rc = -ENOMEM; |
2ced3dfd | 1614 | key = kmalloc(len + 1, GFP_ATOMIC); |
9398c7f7 | 1615 | if (!key) |
1da177e4 | 1616 | goto bad; |
1da177e4 | 1617 | rc = next_entry(key, fp, len); |
9398c7f7 | 1618 | if (rc) |
1da177e4 | 1619 | goto bad; |
df4ea865 | 1620 | key[len] = '\0'; |
1da177e4 LT |
1621 | |
1622 | rc = hashtab_insert(h, key, catdatum); | |
1623 | if (rc) | |
1624 | goto bad; | |
9398c7f7 | 1625 | return 0; |
1da177e4 LT |
1626 | bad: |
1627 | cat_destroy(key, catdatum, NULL); | |
9398c7f7 | 1628 | return rc; |
1da177e4 LT |
1629 | } |
1630 | ||
1631 | static int (*read_f[SYM_NUM]) (struct policydb *p, struct hashtab *h, void *fp) = | |
1632 | { | |
1633 | common_read, | |
1634 | class_read, | |
1635 | role_read, | |
1636 | type_read, | |
1637 | user_read, | |
1638 | cond_read_bool, | |
1639 | sens_read, | |
1640 | cat_read, | |
1641 | }; | |
1642 | ||
d9250dea KK |
1643 | static int user_bounds_sanity_check(void *key, void *datum, void *datap) |
1644 | { | |
1645 | struct user_datum *upper, *user; | |
1646 | struct policydb *p = datap; | |
1647 | int depth = 0; | |
1648 | ||
1649 | upper = user = datum; | |
1650 | while (upper->bounds) { | |
1651 | struct ebitmap_node *node; | |
1652 | unsigned long bit; | |
1653 | ||
1654 | if (++depth == POLICYDB_BOUNDS_MAXDEPTH) { | |
1655 | printk(KERN_ERR "SELinux: user %s: " | |
1656 | "too deep or looped boundary", | |
1657 | (char *) key); | |
1658 | return -EINVAL; | |
1659 | } | |
1660 | ||
1661 | upper = p->user_val_to_struct[upper->bounds - 1]; | |
1662 | ebitmap_for_each_positive_bit(&user->roles, node, bit) { | |
1663 | if (ebitmap_get_bit(&upper->roles, bit)) | |
1664 | continue; | |
1665 | ||
1666 | printk(KERN_ERR | |
1667 | "SELinux: boundary violated policy: " | |
1668 | "user=%s role=%s bounds=%s\n", | |
ac76c05b EP |
1669 | sym_name(p, SYM_USERS, user->value - 1), |
1670 | sym_name(p, SYM_ROLES, bit), | |
1671 | sym_name(p, SYM_USERS, upper->value - 1)); | |
d9250dea KK |
1672 | |
1673 | return -EINVAL; | |
1674 | } | |
1675 | } | |
1676 | ||
1677 | return 0; | |
1678 | } | |
1679 | ||
1680 | static int role_bounds_sanity_check(void *key, void *datum, void *datap) | |
1681 | { | |
1682 | struct role_datum *upper, *role; | |
1683 | struct policydb *p = datap; | |
1684 | int depth = 0; | |
1685 | ||
1686 | upper = role = datum; | |
1687 | while (upper->bounds) { | |
1688 | struct ebitmap_node *node; | |
1689 | unsigned long bit; | |
1690 | ||
1691 | if (++depth == POLICYDB_BOUNDS_MAXDEPTH) { | |
1692 | printk(KERN_ERR "SELinux: role %s: " | |
1693 | "too deep or looped bounds\n", | |
1694 | (char *) key); | |
1695 | return -EINVAL; | |
1696 | } | |
1697 | ||
1698 | upper = p->role_val_to_struct[upper->bounds - 1]; | |
1699 | ebitmap_for_each_positive_bit(&role->types, node, bit) { | |
1700 | if (ebitmap_get_bit(&upper->types, bit)) | |
1701 | continue; | |
1702 | ||
1703 | printk(KERN_ERR | |
1704 | "SELinux: boundary violated policy: " | |
1705 | "role=%s type=%s bounds=%s\n", | |
ac76c05b EP |
1706 | sym_name(p, SYM_ROLES, role->value - 1), |
1707 | sym_name(p, SYM_TYPES, bit), | |
1708 | sym_name(p, SYM_ROLES, upper->value - 1)); | |
d9250dea KK |
1709 | |
1710 | return -EINVAL; | |
1711 | } | |
1712 | } | |
1713 | ||
1714 | return 0; | |
1715 | } | |
1716 | ||
1717 | static int type_bounds_sanity_check(void *key, void *datum, void *datap) | |
1718 | { | |
daa6d83a | 1719 | struct type_datum *upper; |
d9250dea KK |
1720 | struct policydb *p = datap; |
1721 | int depth = 0; | |
1722 | ||
daa6d83a | 1723 | upper = datum; |
d9250dea KK |
1724 | while (upper->bounds) { |
1725 | if (++depth == POLICYDB_BOUNDS_MAXDEPTH) { | |
1726 | printk(KERN_ERR "SELinux: type %s: " | |
1727 | "too deep or looped boundary\n", | |
1728 | (char *) key); | |
1729 | return -EINVAL; | |
1730 | } | |
1731 | ||
23bdecb0 EP |
1732 | upper = flex_array_get_ptr(p->type_val_to_struct_array, |
1733 | upper->bounds - 1); | |
1734 | BUG_ON(!upper); | |
1735 | ||
d9250dea KK |
1736 | if (upper->attribute) { |
1737 | printk(KERN_ERR "SELinux: type %s: " | |
1738 | "bounded by attribute %s", | |
1739 | (char *) key, | |
ac76c05b | 1740 | sym_name(p, SYM_TYPES, upper->value - 1)); |
d9250dea KK |
1741 | return -EINVAL; |
1742 | } | |
1743 | } | |
1744 | ||
1745 | return 0; | |
1746 | } | |
1747 | ||
1748 | static int policydb_bounds_sanity_check(struct policydb *p) | |
1749 | { | |
1750 | int rc; | |
1751 | ||
1752 | if (p->policyvers < POLICYDB_VERSION_BOUNDARY) | |
1753 | return 0; | |
1754 | ||
1755 | rc = hashtab_map(p->p_users.table, | |
1756 | user_bounds_sanity_check, p); | |
1757 | if (rc) | |
1758 | return rc; | |
1759 | ||
1760 | rc = hashtab_map(p->p_roles.table, | |
1761 | role_bounds_sanity_check, p); | |
1762 | if (rc) | |
1763 | return rc; | |
1764 | ||
1765 | rc = hashtab_map(p->p_types.table, | |
1766 | type_bounds_sanity_check, p); | |
1767 | if (rc) | |
1768 | return rc; | |
1769 | ||
1770 | return 0; | |
1771 | } | |
1772 | ||
c6d3aaa4 SS |
1773 | u16 string_to_security_class(struct policydb *p, const char *name) |
1774 | { | |
1775 | struct class_datum *cladatum; | |
1776 | ||
1777 | cladatum = hashtab_search(p->p_classes.table, name); | |
1778 | if (!cladatum) | |
1779 | return 0; | |
1780 | ||
1781 | return cladatum->value; | |
1782 | } | |
1783 | ||
1784 | u32 string_to_av_perm(struct policydb *p, u16 tclass, const char *name) | |
1785 | { | |
1786 | struct class_datum *cladatum; | |
1787 | struct perm_datum *perdatum = NULL; | |
1788 | struct common_datum *comdatum; | |
1789 | ||
1790 | if (!tclass || tclass > p->p_classes.nprim) | |
1791 | return 0; | |
1792 | ||
1793 | cladatum = p->class_val_to_struct[tclass-1]; | |
1794 | comdatum = cladatum->comdatum; | |
1795 | if (comdatum) | |
1796 | perdatum = hashtab_search(comdatum->permissions.table, | |
1797 | name); | |
1798 | if (!perdatum) | |
1799 | perdatum = hashtab_search(cladatum->permissions.table, | |
1800 | name); | |
1801 | if (!perdatum) | |
1802 | return 0; | |
1803 | ||
1804 | return 1U << (perdatum->value-1); | |
1805 | } | |
1806 | ||
9ee0c823 EP |
1807 | static int range_read(struct policydb *p, void *fp) |
1808 | { | |
1809 | struct range_trans *rt = NULL; | |
1810 | struct mls_range *r = NULL; | |
1811 | int i, rc; | |
1812 | __le32 buf[2]; | |
1813 | u32 nel; | |
1814 | ||
1815 | if (p->policyvers < POLICYDB_VERSION_MLS) | |
1816 | return 0; | |
1817 | ||
1818 | rc = next_entry(buf, fp, sizeof(u32)); | |
1819 | if (rc) | |
1820 | goto out; | |
1821 | ||
1822 | nel = le32_to_cpu(buf[0]); | |
1823 | for (i = 0; i < nel; i++) { | |
1824 | rc = -ENOMEM; | |
1825 | rt = kzalloc(sizeof(*rt), GFP_KERNEL); | |
1826 | if (!rt) | |
1827 | goto out; | |
1828 | ||
1829 | rc = next_entry(buf, fp, (sizeof(u32) * 2)); | |
1830 | if (rc) | |
1831 | goto out; | |
1832 | ||
1833 | rt->source_type = le32_to_cpu(buf[0]); | |
1834 | rt->target_type = le32_to_cpu(buf[1]); | |
1835 | if (p->policyvers >= POLICYDB_VERSION_RANGETRANS) { | |
1836 | rc = next_entry(buf, fp, sizeof(u32)); | |
1837 | if (rc) | |
1838 | goto out; | |
1839 | rt->target_class = le32_to_cpu(buf[0]); | |
1840 | } else | |
1841 | rt->target_class = p->process_class; | |
1842 | ||
1843 | rc = -EINVAL; | |
1844 | if (!policydb_type_isvalid(p, rt->source_type) || | |
1845 | !policydb_type_isvalid(p, rt->target_type) || | |
1846 | !policydb_class_isvalid(p, rt->target_class)) | |
1847 | goto out; | |
1848 | ||
1849 | rc = -ENOMEM; | |
1850 | r = kzalloc(sizeof(*r), GFP_KERNEL); | |
1851 | if (!r) | |
1852 | goto out; | |
1853 | ||
1854 | rc = mls_read_range_helper(r, fp); | |
1855 | if (rc) | |
1856 | goto out; | |
1857 | ||
1858 | rc = -EINVAL; | |
1859 | if (!mls_range_isvalid(p, r)) { | |
1860 | printk(KERN_WARNING "SELinux: rangetrans: invalid range\n"); | |
1861 | goto out; | |
1862 | } | |
1863 | ||
1864 | rc = hashtab_insert(p->range_tr, rt, r); | |
1865 | if (rc) | |
1866 | goto out; | |
1867 | ||
1868 | rt = NULL; | |
1869 | r = NULL; | |
1870 | } | |
be30b16d | 1871 | hash_eval(p->range_tr, "rangetr"); |
9ee0c823 EP |
1872 | rc = 0; |
1873 | out: | |
1874 | kfree(rt); | |
1875 | kfree(r); | |
1876 | return rc; | |
1877 | } | |
1878 | ||
652bb9b0 EP |
1879 | static int filename_trans_read(struct policydb *p, void *fp) |
1880 | { | |
2463c26d EP |
1881 | struct filename_trans *ft; |
1882 | struct filename_trans_datum *otype; | |
652bb9b0 | 1883 | char *name; |
2463c26d | 1884 | u32 nel, len; |
652bb9b0 EP |
1885 | __le32 buf[4]; |
1886 | int rc, i; | |
1887 | ||
1888 | if (p->policyvers < POLICYDB_VERSION_FILENAME_TRANS) | |
1889 | return 0; | |
1890 | ||
1891 | rc = next_entry(buf, fp, sizeof(u32)); | |
1892 | if (rc) | |
2463c26d | 1893 | return rc; |
652bb9b0 EP |
1894 | nel = le32_to_cpu(buf[0]); |
1895 | ||
652bb9b0 | 1896 | for (i = 0; i < nel; i++) { |
2463c26d EP |
1897 | ft = NULL; |
1898 | otype = NULL; | |
1899 | name = NULL; | |
1900 | ||
652bb9b0 EP |
1901 | rc = -ENOMEM; |
1902 | ft = kzalloc(sizeof(*ft), GFP_KERNEL); | |
1903 | if (!ft) | |
1904 | goto out; | |
1905 | ||
2463c26d EP |
1906 | rc = -ENOMEM; |
1907 | otype = kmalloc(sizeof(*otype), GFP_KERNEL); | |
1908 | if (!otype) | |
1909 | goto out; | |
652bb9b0 EP |
1910 | |
1911 | /* length of the path component string */ | |
1912 | rc = next_entry(buf, fp, sizeof(u32)); | |
1913 | if (rc) | |
1914 | goto out; | |
1915 | len = le32_to_cpu(buf[0]); | |
1916 | ||
1917 | rc = -ENOMEM; | |
1918 | name = kmalloc(len + 1, GFP_KERNEL); | |
1919 | if (!name) | |
1920 | goto out; | |
1921 | ||
1922 | ft->name = name; | |
1923 | ||
1924 | /* path component string */ | |
1925 | rc = next_entry(name, fp, len); | |
1926 | if (rc) | |
1927 | goto out; | |
1928 | name[len] = 0; | |
1929 | ||
652bb9b0 EP |
1930 | rc = next_entry(buf, fp, sizeof(u32) * 4); |
1931 | if (rc) | |
1932 | goto out; | |
1933 | ||
1934 | ft->stype = le32_to_cpu(buf[0]); | |
1935 | ft->ttype = le32_to_cpu(buf[1]); | |
1936 | ft->tclass = le32_to_cpu(buf[2]); | |
2463c26d EP |
1937 | |
1938 | otype->otype = le32_to_cpu(buf[3]); | |
03a4c018 EP |
1939 | |
1940 | rc = ebitmap_set_bit(&p->filename_trans_ttypes, ft->ttype, 1); | |
1941 | if (rc) | |
1942 | goto out; | |
2463c26d EP |
1943 | |
1944 | hashtab_insert(p->filename_trans, ft, otype); | |
652bb9b0 | 1945 | } |
2463c26d EP |
1946 | hash_eval(p->filename_trans, "filenametr"); |
1947 | return 0; | |
652bb9b0 | 1948 | out: |
2463c26d EP |
1949 | kfree(ft); |
1950 | kfree(name); | |
1951 | kfree(otype); | |
1952 | ||
652bb9b0 EP |
1953 | return rc; |
1954 | } | |
1955 | ||
d1b43547 EP |
1956 | static int genfs_read(struct policydb *p, void *fp) |
1957 | { | |
1958 | int i, j, rc; | |
1959 | u32 nel, nel2, len, len2; | |
1960 | __le32 buf[1]; | |
1961 | struct ocontext *l, *c; | |
1962 | struct ocontext *newc = NULL; | |
1963 | struct genfs *genfs_p, *genfs; | |
1964 | struct genfs *newgenfs = NULL; | |
1965 | ||
1966 | rc = next_entry(buf, fp, sizeof(u32)); | |
1967 | if (rc) | |
1968 | goto out; | |
1969 | nel = le32_to_cpu(buf[0]); | |
1970 | ||
1971 | for (i = 0; i < nel; i++) { | |
1972 | rc = next_entry(buf, fp, sizeof(u32)); | |
1973 | if (rc) | |
1974 | goto out; | |
1975 | len = le32_to_cpu(buf[0]); | |
1976 | ||
1977 | rc = -ENOMEM; | |
1978 | newgenfs = kzalloc(sizeof(*newgenfs), GFP_KERNEL); | |
1979 | if (!newgenfs) | |
1980 | goto out; | |
1981 | ||
1982 | rc = -ENOMEM; | |
1983 | newgenfs->fstype = kmalloc(len + 1, GFP_KERNEL); | |
1984 | if (!newgenfs->fstype) | |
1985 | goto out; | |
1986 | ||
1987 | rc = next_entry(newgenfs->fstype, fp, len); | |
1988 | if (rc) | |
1989 | goto out; | |
1990 | ||
1991 | newgenfs->fstype[len] = 0; | |
1992 | ||
1993 | for (genfs_p = NULL, genfs = p->genfs; genfs; | |
1994 | genfs_p = genfs, genfs = genfs->next) { | |
1995 | rc = -EINVAL; | |
1996 | if (strcmp(newgenfs->fstype, genfs->fstype) == 0) { | |
1997 | printk(KERN_ERR "SELinux: dup genfs fstype %s\n", | |
1998 | newgenfs->fstype); | |
1999 | goto out; | |
2000 | } | |
2001 | if (strcmp(newgenfs->fstype, genfs->fstype) < 0) | |
2002 | break; | |
2003 | } | |
2004 | newgenfs->next = genfs; | |
2005 | if (genfs_p) | |
2006 | genfs_p->next = newgenfs; | |
2007 | else | |
2008 | p->genfs = newgenfs; | |
2009 | genfs = newgenfs; | |
2010 | newgenfs = NULL; | |
2011 | ||
2012 | rc = next_entry(buf, fp, sizeof(u32)); | |
2013 | if (rc) | |
2014 | goto out; | |
2015 | ||
2016 | nel2 = le32_to_cpu(buf[0]); | |
2017 | for (j = 0; j < nel2; j++) { | |
2018 | rc = next_entry(buf, fp, sizeof(u32)); | |
2019 | if (rc) | |
2020 | goto out; | |
2021 | len = le32_to_cpu(buf[0]); | |
2022 | ||
2023 | rc = -ENOMEM; | |
2024 | newc = kzalloc(sizeof(*newc), GFP_KERNEL); | |
2025 | if (!newc) | |
2026 | goto out; | |
2027 | ||
2028 | rc = -ENOMEM; | |
2029 | newc->u.name = kmalloc(len + 1, GFP_KERNEL); | |
2030 | if (!newc->u.name) | |
2031 | goto out; | |
2032 | ||
2033 | rc = next_entry(newc->u.name, fp, len); | |
2034 | if (rc) | |
2035 | goto out; | |
2036 | newc->u.name[len] = 0; | |
2037 | ||
2038 | rc = next_entry(buf, fp, sizeof(u32)); | |
2039 | if (rc) | |
2040 | goto out; | |
2041 | ||
2042 | newc->v.sclass = le32_to_cpu(buf[0]); | |
2043 | rc = context_read_and_validate(&newc->context[0], p, fp); | |
2044 | if (rc) | |
2045 | goto out; | |
2046 | ||
2047 | for (l = NULL, c = genfs->head; c; | |
2048 | l = c, c = c->next) { | |
2049 | rc = -EINVAL; | |
2050 | if (!strcmp(newc->u.name, c->u.name) && | |
2051 | (!c->v.sclass || !newc->v.sclass || | |
2052 | newc->v.sclass == c->v.sclass)) { | |
2053 | printk(KERN_ERR "SELinux: dup genfs entry (%s,%s)\n", | |
2054 | genfs->fstype, c->u.name); | |
2055 | goto out; | |
2056 | } | |
2057 | len = strlen(newc->u.name); | |
2058 | len2 = strlen(c->u.name); | |
2059 | if (len > len2) | |
2060 | break; | |
2061 | } | |
2062 | ||
2063 | newc->next = c; | |
2064 | if (l) | |
2065 | l->next = newc; | |
2066 | else | |
2067 | genfs->head = newc; | |
2068 | newc = NULL; | |
2069 | } | |
2070 | } | |
2071 | rc = 0; | |
2072 | out: | |
2073 | if (newgenfs) | |
2074 | kfree(newgenfs->fstype); | |
2075 | kfree(newgenfs); | |
2076 | ocontext_destroy(newc, OCON_FSUSE); | |
2077 | ||
2078 | return rc; | |
2079 | } | |
2080 | ||
692a8a23 EP |
2081 | static int ocontext_read(struct policydb *p, struct policydb_compat_info *info, |
2082 | void *fp) | |
2083 | { | |
2084 | int i, j, rc; | |
2085 | u32 nel, len; | |
2086 | __le32 buf[3]; | |
2087 | struct ocontext *l, *c; | |
2088 | u32 nodebuf[8]; | |
2089 | ||
2090 | for (i = 0; i < info->ocon_num; i++) { | |
2091 | rc = next_entry(buf, fp, sizeof(u32)); | |
2092 | if (rc) | |
2093 | goto out; | |
2094 | nel = le32_to_cpu(buf[0]); | |
2095 | ||
2096 | l = NULL; | |
2097 | for (j = 0; j < nel; j++) { | |
2098 | rc = -ENOMEM; | |
2099 | c = kzalloc(sizeof(*c), GFP_KERNEL); | |
2100 | if (!c) | |
2101 | goto out; | |
2102 | if (l) | |
2103 | l->next = c; | |
2104 | else | |
2105 | p->ocontexts[i] = c; | |
2106 | l = c; | |
2107 | ||
2108 | switch (i) { | |
2109 | case OCON_ISID: | |
2110 | rc = next_entry(buf, fp, sizeof(u32)); | |
2111 | if (rc) | |
2112 | goto out; | |
2113 | ||
2114 | c->sid[0] = le32_to_cpu(buf[0]); | |
2115 | rc = context_read_and_validate(&c->context[0], p, fp); | |
2116 | if (rc) | |
2117 | goto out; | |
2118 | break; | |
2119 | case OCON_FS: | |
2120 | case OCON_NETIF: | |
2121 | rc = next_entry(buf, fp, sizeof(u32)); | |
2122 | if (rc) | |
2123 | goto out; | |
2124 | len = le32_to_cpu(buf[0]); | |
2125 | ||
2126 | rc = -ENOMEM; | |
2127 | c->u.name = kmalloc(len + 1, GFP_KERNEL); | |
2128 | if (!c->u.name) | |
2129 | goto out; | |
2130 | ||
2131 | rc = next_entry(c->u.name, fp, len); | |
2132 | if (rc) | |
2133 | goto out; | |
2134 | ||
2135 | c->u.name[len] = 0; | |
2136 | rc = context_read_and_validate(&c->context[0], p, fp); | |
2137 | if (rc) | |
2138 | goto out; | |
2139 | rc = context_read_and_validate(&c->context[1], p, fp); | |
2140 | if (rc) | |
2141 | goto out; | |
2142 | break; | |
2143 | case OCON_PORT: | |
2144 | rc = next_entry(buf, fp, sizeof(u32)*3); | |
2145 | if (rc) | |
2146 | goto out; | |
2147 | c->u.port.protocol = le32_to_cpu(buf[0]); | |
2148 | c->u.port.low_port = le32_to_cpu(buf[1]); | |
2149 | c->u.port.high_port = le32_to_cpu(buf[2]); | |
2150 | rc = context_read_and_validate(&c->context[0], p, fp); | |
2151 | if (rc) | |
2152 | goto out; | |
2153 | break; | |
2154 | case OCON_NODE: | |
2155 | rc = next_entry(nodebuf, fp, sizeof(u32) * 2); | |
2156 | if (rc) | |
2157 | goto out; | |
2158 | c->u.node.addr = nodebuf[0]; /* network order */ | |
2159 | c->u.node.mask = nodebuf[1]; /* network order */ | |
2160 | rc = context_read_and_validate(&c->context[0], p, fp); | |
2161 | if (rc) | |
2162 | goto out; | |
2163 | break; | |
2164 | case OCON_FSUSE: | |
2165 | rc = next_entry(buf, fp, sizeof(u32)*2); | |
2166 | if (rc) | |
2167 | goto out; | |
2168 | ||
2169 | rc = -EINVAL; | |
2170 | c->v.behavior = le32_to_cpu(buf[0]); | |
2171 | if (c->v.behavior > SECURITY_FS_USE_NONE) | |
2172 | goto out; | |
2173 | ||
2174 | rc = -ENOMEM; | |
2175 | len = le32_to_cpu(buf[1]); | |
2176 | c->u.name = kmalloc(len + 1, GFP_KERNEL); | |
2177 | if (!c->u.name) | |
2178 | goto out; | |
2179 | ||
2180 | rc = next_entry(c->u.name, fp, len); | |
2181 | if (rc) | |
2182 | goto out; | |
2183 | c->u.name[len] = 0; | |
2184 | rc = context_read_and_validate(&c->context[0], p, fp); | |
2185 | if (rc) | |
2186 | goto out; | |
2187 | break; | |
2188 | case OCON_NODE6: { | |
2189 | int k; | |
2190 | ||
2191 | rc = next_entry(nodebuf, fp, sizeof(u32) * 8); | |
2192 | if (rc) | |
2193 | goto out; | |
2194 | for (k = 0; k < 4; k++) | |
2195 | c->u.node6.addr[k] = nodebuf[k]; | |
2196 | for (k = 0; k < 4; k++) | |
2197 | c->u.node6.mask[k] = nodebuf[k+4]; | |
2198 | rc = context_read_and_validate(&c->context[0], p, fp); | |
2199 | if (rc) | |
2200 | goto out; | |
2201 | break; | |
2202 | } | |
2203 | } | |
2204 | } | |
2205 | } | |
2206 | rc = 0; | |
2207 | out: | |
2208 | return rc; | |
2209 | } | |
2210 | ||
1da177e4 LT |
2211 | /* |
2212 | * Read the configuration data from a policy database binary | |
2213 | * representation file into a policy database structure. | |
2214 | */ | |
2215 | int policydb_read(struct policydb *p, void *fp) | |
2216 | { | |
2217 | struct role_allow *ra, *lra; | |
2218 | struct role_trans *tr, *ltr; | |
1da177e4 | 2219 | int i, j, rc; |
59dbd1ba | 2220 | __le32 buf[4]; |
d1b43547 EP |
2221 | u32 len, nprim, nel; |
2222 | ||
1da177e4 LT |
2223 | char *policydb_str; |
2224 | struct policydb_compat_info *info; | |
1da177e4 | 2225 | |
1da177e4 LT |
2226 | rc = policydb_init(p); |
2227 | if (rc) | |
9398c7f7 | 2228 | return rc; |
1da177e4 LT |
2229 | |
2230 | /* Read the magic number and string length. */ | |
2ced3dfd | 2231 | rc = next_entry(buf, fp, sizeof(u32) * 2); |
9398c7f7 | 2232 | if (rc) |
1da177e4 LT |
2233 | goto bad; |
2234 | ||
9398c7f7 | 2235 | rc = -EINVAL; |
b5bf6c55 | 2236 | if (le32_to_cpu(buf[0]) != POLICYDB_MAGIC) { |
454d972c | 2237 | printk(KERN_ERR "SELinux: policydb magic number 0x%x does " |
1da177e4 | 2238 | "not match expected magic number 0x%x\n", |
b5bf6c55 | 2239 | le32_to_cpu(buf[0]), POLICYDB_MAGIC); |
1da177e4 LT |
2240 | goto bad; |
2241 | } | |
2242 | ||
9398c7f7 | 2243 | rc = -EINVAL; |
b5bf6c55 | 2244 | len = le32_to_cpu(buf[1]); |
1da177e4 | 2245 | if (len != strlen(POLICYDB_STRING)) { |
454d972c | 2246 | printk(KERN_ERR "SELinux: policydb string length %d does not " |
1da177e4 LT |
2247 | "match expected length %Zu\n", |
2248 | len, strlen(POLICYDB_STRING)); | |
2249 | goto bad; | |
2250 | } | |
9398c7f7 EP |
2251 | |
2252 | rc = -ENOMEM; | |
2ced3dfd | 2253 | policydb_str = kmalloc(len + 1, GFP_KERNEL); |
1da177e4 | 2254 | if (!policydb_str) { |
454d972c | 2255 | printk(KERN_ERR "SELinux: unable to allocate memory for policydb " |
1da177e4 | 2256 | "string of length %d\n", len); |
1da177e4 LT |
2257 | goto bad; |
2258 | } | |
9398c7f7 | 2259 | |
1da177e4 | 2260 | rc = next_entry(policydb_str, fp, len); |
9398c7f7 | 2261 | if (rc) { |
454d972c | 2262 | printk(KERN_ERR "SELinux: truncated policydb string identifier\n"); |
1da177e4 LT |
2263 | kfree(policydb_str); |
2264 | goto bad; | |
2265 | } | |
9398c7f7 EP |
2266 | |
2267 | rc = -EINVAL; | |
df4ea865 | 2268 | policydb_str[len] = '\0'; |
1da177e4 | 2269 | if (strcmp(policydb_str, POLICYDB_STRING)) { |
454d972c | 2270 | printk(KERN_ERR "SELinux: policydb string %s does not match " |
1da177e4 LT |
2271 | "my string %s\n", policydb_str, POLICYDB_STRING); |
2272 | kfree(policydb_str); | |
2273 | goto bad; | |
2274 | } | |
2275 | /* Done with policydb_str. */ | |
2276 | kfree(policydb_str); | |
2277 | policydb_str = NULL; | |
2278 | ||
0719aaf5 | 2279 | /* Read the version and table sizes. */ |
1da177e4 | 2280 | rc = next_entry(buf, fp, sizeof(u32)*4); |
9398c7f7 | 2281 | if (rc) |
1da177e4 | 2282 | goto bad; |
1da177e4 | 2283 | |
9398c7f7 | 2284 | rc = -EINVAL; |
b5bf6c55 | 2285 | p->policyvers = le32_to_cpu(buf[0]); |
1da177e4 LT |
2286 | if (p->policyvers < POLICYDB_VERSION_MIN || |
2287 | p->policyvers > POLICYDB_VERSION_MAX) { | |
454d972c | 2288 | printk(KERN_ERR "SELinux: policydb version %d does not match " |
2ced3dfd EP |
2289 | "my version range %d-%d\n", |
2290 | le32_to_cpu(buf[0]), POLICYDB_VERSION_MIN, POLICYDB_VERSION_MAX); | |
2291 | goto bad; | |
1da177e4 LT |
2292 | } |
2293 | ||
b5bf6c55 | 2294 | if ((le32_to_cpu(buf[1]) & POLICYDB_CONFIG_MLS)) { |
0719aaf5 | 2295 | p->mls_enabled = 1; |
1da177e4 | 2296 | |
9398c7f7 | 2297 | rc = -EINVAL; |
1da177e4 | 2298 | if (p->policyvers < POLICYDB_VERSION_MLS) { |
744ba35e EP |
2299 | printk(KERN_ERR "SELinux: security policydb version %d " |
2300 | "(MLS) not backwards compatible\n", | |
2301 | p->policyvers); | |
1da177e4 LT |
2302 | goto bad; |
2303 | } | |
1da177e4 | 2304 | } |
3f12070e EP |
2305 | p->reject_unknown = !!(le32_to_cpu(buf[1]) & REJECT_UNKNOWN); |
2306 | p->allow_unknown = !!(le32_to_cpu(buf[1]) & ALLOW_UNKNOWN); | |
1da177e4 | 2307 | |
9398c7f7 EP |
2308 | if (p->policyvers >= POLICYDB_VERSION_POLCAP) { |
2309 | rc = ebitmap_read(&p->policycaps, fp); | |
2310 | if (rc) | |
2311 | goto bad; | |
2312 | } | |
3bb56b25 | 2313 | |
9398c7f7 EP |
2314 | if (p->policyvers >= POLICYDB_VERSION_PERMISSIVE) { |
2315 | rc = ebitmap_read(&p->permissive_map, fp); | |
2316 | if (rc) | |
2317 | goto bad; | |
2318 | } | |
64dbf074 | 2319 | |
9398c7f7 | 2320 | rc = -EINVAL; |
1da177e4 LT |
2321 | info = policydb_lookup_compat(p->policyvers); |
2322 | if (!info) { | |
454d972c | 2323 | printk(KERN_ERR "SELinux: unable to find policy compat info " |
1da177e4 LT |
2324 | "for version %d\n", p->policyvers); |
2325 | goto bad; | |
2326 | } | |
2327 | ||
9398c7f7 | 2328 | rc = -EINVAL; |
b5bf6c55 AD |
2329 | if (le32_to_cpu(buf[2]) != info->sym_num || |
2330 | le32_to_cpu(buf[3]) != info->ocon_num) { | |
454d972c | 2331 | printk(KERN_ERR "SELinux: policydb table sizes (%d,%d) do " |
b5bf6c55 AD |
2332 | "not match mine (%d,%d)\n", le32_to_cpu(buf[2]), |
2333 | le32_to_cpu(buf[3]), | |
1da177e4 LT |
2334 | info->sym_num, info->ocon_num); |
2335 | goto bad; | |
2336 | } | |
2337 | ||
2338 | for (i = 0; i < info->sym_num; i++) { | |
2339 | rc = next_entry(buf, fp, sizeof(u32)*2); | |
9398c7f7 | 2340 | if (rc) |
1da177e4 LT |
2341 | goto bad; |
2342 | nprim = le32_to_cpu(buf[0]); | |
2343 | nel = le32_to_cpu(buf[1]); | |
2344 | for (j = 0; j < nel; j++) { | |
2345 | rc = read_f[i](p, p->symtab[i].table, fp); | |
2346 | if (rc) | |
2347 | goto bad; | |
2348 | } | |
2349 | ||
2350 | p->symtab[i].nprim = nprim; | |
2351 | } | |
2352 | ||
1214eac7 HC |
2353 | rc = -EINVAL; |
2354 | p->process_class = string_to_security_class(p, "process"); | |
2355 | if (!p->process_class) | |
2356 | goto bad; | |
2357 | ||
45e5421e | 2358 | rc = avtab_read(&p->te_avtab, fp, p); |
1da177e4 LT |
2359 | if (rc) |
2360 | goto bad; | |
2361 | ||
2362 | if (p->policyvers >= POLICYDB_VERSION_BOOL) { | |
2363 | rc = cond_read_list(p, fp); | |
2364 | if (rc) | |
2365 | goto bad; | |
2366 | } | |
2367 | ||
2368 | rc = next_entry(buf, fp, sizeof(u32)); | |
9398c7f7 | 2369 | if (rc) |
1da177e4 LT |
2370 | goto bad; |
2371 | nel = le32_to_cpu(buf[0]); | |
2372 | ltr = NULL; | |
2373 | for (i = 0; i < nel; i++) { | |
9398c7f7 | 2374 | rc = -ENOMEM; |
89d155ef | 2375 | tr = kzalloc(sizeof(*tr), GFP_KERNEL); |
9398c7f7 | 2376 | if (!tr) |
1da177e4 | 2377 | goto bad; |
2ced3dfd | 2378 | if (ltr) |
1da177e4 | 2379 | ltr->next = tr; |
2ced3dfd | 2380 | else |
1da177e4 | 2381 | p->role_tr = tr; |
1da177e4 | 2382 | rc = next_entry(buf, fp, sizeof(u32)*3); |
9398c7f7 | 2383 | if (rc) |
1da177e4 | 2384 | goto bad; |
9398c7f7 EP |
2385 | |
2386 | rc = -EINVAL; | |
1da177e4 LT |
2387 | tr->role = le32_to_cpu(buf[0]); |
2388 | tr->type = le32_to_cpu(buf[1]); | |
2389 | tr->new_role = le32_to_cpu(buf[2]); | |
8023976c HC |
2390 | if (p->policyvers >= POLICYDB_VERSION_ROLETRANS) { |
2391 | rc = next_entry(buf, fp, sizeof(u32)); | |
2392 | if (rc) | |
2393 | goto bad; | |
2394 | tr->tclass = le32_to_cpu(buf[0]); | |
2395 | } else | |
2396 | tr->tclass = p->process_class; | |
2397 | ||
45e5421e SS |
2398 | if (!policydb_role_isvalid(p, tr->role) || |
2399 | !policydb_type_isvalid(p, tr->type) || | |
8023976c | 2400 | !policydb_class_isvalid(p, tr->tclass) || |
9398c7f7 | 2401 | !policydb_role_isvalid(p, tr->new_role)) |
45e5421e | 2402 | goto bad; |
1da177e4 LT |
2403 | ltr = tr; |
2404 | } | |
2405 | ||
2406 | rc = next_entry(buf, fp, sizeof(u32)); | |
9398c7f7 | 2407 | if (rc) |
1da177e4 LT |
2408 | goto bad; |
2409 | nel = le32_to_cpu(buf[0]); | |
2410 | lra = NULL; | |
2411 | for (i = 0; i < nel; i++) { | |
9398c7f7 | 2412 | rc = -ENOMEM; |
89d155ef | 2413 | ra = kzalloc(sizeof(*ra), GFP_KERNEL); |
9398c7f7 | 2414 | if (!ra) |
1da177e4 | 2415 | goto bad; |
2ced3dfd | 2416 | if (lra) |
1da177e4 | 2417 | lra->next = ra; |
2ced3dfd | 2418 | else |
1da177e4 | 2419 | p->role_allow = ra; |
1da177e4 | 2420 | rc = next_entry(buf, fp, sizeof(u32)*2); |
9398c7f7 | 2421 | if (rc) |
1da177e4 | 2422 | goto bad; |
9398c7f7 EP |
2423 | |
2424 | rc = -EINVAL; | |
1da177e4 LT |
2425 | ra->role = le32_to_cpu(buf[0]); |
2426 | ra->new_role = le32_to_cpu(buf[1]); | |
45e5421e | 2427 | if (!policydb_role_isvalid(p, ra->role) || |
9398c7f7 | 2428 | !policydb_role_isvalid(p, ra->new_role)) |
45e5421e | 2429 | goto bad; |
1da177e4 LT |
2430 | lra = ra; |
2431 | } | |
2432 | ||
652bb9b0 EP |
2433 | rc = filename_trans_read(p, fp); |
2434 | if (rc) | |
2435 | goto bad; | |
2436 | ||
1d9bc6dc | 2437 | rc = policydb_index(p); |
1da177e4 LT |
2438 | if (rc) |
2439 | goto bad; | |
2440 | ||
9398c7f7 EP |
2441 | rc = -EINVAL; |
2442 | p->process_trans_perms = string_to_av_perm(p, p->process_class, "transition"); | |
2443 | p->process_trans_perms |= string_to_av_perm(p, p->process_class, "dyntransition"); | |
c6d3aaa4 SS |
2444 | if (!p->process_trans_perms) |
2445 | goto bad; | |
2446 | ||
692a8a23 EP |
2447 | rc = ocontext_read(p, info, fp); |
2448 | if (rc) | |
2449 | goto bad; | |
1da177e4 | 2450 | |
d1b43547 EP |
2451 | rc = genfs_read(p, fp); |
2452 | if (rc) | |
1da177e4 | 2453 | goto bad; |
1da177e4 | 2454 | |
9ee0c823 EP |
2455 | rc = range_read(p, fp); |
2456 | if (rc) | |
2457 | goto bad; | |
1da177e4 | 2458 | |
6371dcd3 EP |
2459 | rc = -ENOMEM; |
2460 | p->type_attr_map_array = flex_array_alloc(sizeof(struct ebitmap), | |
2461 | p->p_types.nprim, | |
2462 | GFP_KERNEL | __GFP_ZERO); | |
2463 | if (!p->type_attr_map_array) | |
2464 | goto bad; | |
2465 | ||
2466 | /* preallocate so we don't have to worry about the put ever failing */ | |
5a3ea878 | 2467 | rc = flex_array_prealloc(p->type_attr_map_array, 0, p->p_types.nprim, |
6371dcd3 EP |
2468 | GFP_KERNEL | __GFP_ZERO); |
2469 | if (rc) | |
782ebb99 SS |
2470 | goto bad; |
2471 | ||
2472 | for (i = 0; i < p->p_types.nprim; i++) { | |
6371dcd3 EP |
2473 | struct ebitmap *e = flex_array_get(p->type_attr_map_array, i); |
2474 | ||
2475 | BUG_ON(!e); | |
2476 | ebitmap_init(e); | |
782ebb99 | 2477 | if (p->policyvers >= POLICYDB_VERSION_AVTAB) { |
6371dcd3 EP |
2478 | rc = ebitmap_read(e, fp); |
2479 | if (rc) | |
782ebb99 SS |
2480 | goto bad; |
2481 | } | |
2482 | /* add the type itself as the degenerate case */ | |
6371dcd3 EP |
2483 | rc = ebitmap_set_bit(e, i, 1); |
2484 | if (rc) | |
2485 | goto bad; | |
782ebb99 SS |
2486 | } |
2487 | ||
d9250dea KK |
2488 | rc = policydb_bounds_sanity_check(p); |
2489 | if (rc) | |
2490 | goto bad; | |
2491 | ||
1da177e4 LT |
2492 | rc = 0; |
2493 | out: | |
2494 | return rc; | |
1da177e4 | 2495 | bad: |
1da177e4 LT |
2496 | policydb_destroy(p); |
2497 | goto out; | |
2498 | } | |
cee74f47 EP |
2499 | |
2500 | /* | |
2501 | * Write a MLS level structure to a policydb binary | |
2502 | * representation file. | |
2503 | */ | |
2504 | static int mls_write_level(struct mls_level *l, void *fp) | |
2505 | { | |
2506 | __le32 buf[1]; | |
2507 | int rc; | |
2508 | ||
2509 | buf[0] = cpu_to_le32(l->sens); | |
2510 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
2511 | if (rc) | |
2512 | return rc; | |
2513 | ||
2514 | rc = ebitmap_write(&l->cat, fp); | |
2515 | if (rc) | |
2516 | return rc; | |
2517 | ||
2518 | return 0; | |
2519 | } | |
2520 | ||
2521 | /* | |
2522 | * Write a MLS range structure to a policydb binary | |
2523 | * representation file. | |
2524 | */ | |
2525 | static int mls_write_range_helper(struct mls_range *r, void *fp) | |
2526 | { | |
2527 | __le32 buf[3]; | |
2528 | size_t items; | |
2529 | int rc, eq; | |
2530 | ||
2531 | eq = mls_level_eq(&r->level[1], &r->level[0]); | |
2532 | ||
2533 | if (eq) | |
2534 | items = 2; | |
2535 | else | |
2536 | items = 3; | |
2537 | buf[0] = cpu_to_le32(items-1); | |
2538 | buf[1] = cpu_to_le32(r->level[0].sens); | |
2539 | if (!eq) | |
2540 | buf[2] = cpu_to_le32(r->level[1].sens); | |
2541 | ||
2542 | BUG_ON(items > (sizeof(buf)/sizeof(buf[0]))); | |
2543 | ||
2544 | rc = put_entry(buf, sizeof(u32), items, fp); | |
2545 | if (rc) | |
2546 | return rc; | |
2547 | ||
2548 | rc = ebitmap_write(&r->level[0].cat, fp); | |
2549 | if (rc) | |
2550 | return rc; | |
2551 | if (!eq) { | |
2552 | rc = ebitmap_write(&r->level[1].cat, fp); | |
2553 | if (rc) | |
2554 | return rc; | |
2555 | } | |
2556 | ||
2557 | return 0; | |
2558 | } | |
2559 | ||
2560 | static int sens_write(void *vkey, void *datum, void *ptr) | |
2561 | { | |
2562 | char *key = vkey; | |
2563 | struct level_datum *levdatum = datum; | |
2564 | struct policy_data *pd = ptr; | |
2565 | void *fp = pd->fp; | |
2566 | __le32 buf[2]; | |
2567 | size_t len; | |
2568 | int rc; | |
2569 | ||
2570 | len = strlen(key); | |
2571 | buf[0] = cpu_to_le32(len); | |
2572 | buf[1] = cpu_to_le32(levdatum->isalias); | |
2573 | rc = put_entry(buf, sizeof(u32), 2, fp); | |
2574 | if (rc) | |
2575 | return rc; | |
2576 | ||
2577 | rc = put_entry(key, 1, len, fp); | |
2578 | if (rc) | |
2579 | return rc; | |
2580 | ||
2581 | rc = mls_write_level(levdatum->level, fp); | |
2582 | if (rc) | |
2583 | return rc; | |
2584 | ||
2585 | return 0; | |
2586 | } | |
2587 | ||
2588 | static int cat_write(void *vkey, void *datum, void *ptr) | |
2589 | { | |
2590 | char *key = vkey; | |
2591 | struct cat_datum *catdatum = datum; | |
2592 | struct policy_data *pd = ptr; | |
2593 | void *fp = pd->fp; | |
2594 | __le32 buf[3]; | |
2595 | size_t len; | |
2596 | int rc; | |
2597 | ||
2598 | len = strlen(key); | |
2599 | buf[0] = cpu_to_le32(len); | |
2600 | buf[1] = cpu_to_le32(catdatum->value); | |
2601 | buf[2] = cpu_to_le32(catdatum->isalias); | |
2602 | rc = put_entry(buf, sizeof(u32), 3, fp); | |
2603 | if (rc) | |
2604 | return rc; | |
2605 | ||
2606 | rc = put_entry(key, 1, len, fp); | |
2607 | if (rc) | |
2608 | return rc; | |
2609 | ||
2610 | return 0; | |
2611 | } | |
2612 | ||
c900ff32 | 2613 | static int role_trans_write(struct policydb *p, void *fp) |
cee74f47 | 2614 | { |
c900ff32 | 2615 | struct role_trans *r = p->role_tr; |
cee74f47 EP |
2616 | struct role_trans *tr; |
2617 | u32 buf[3]; | |
2618 | size_t nel; | |
2619 | int rc; | |
2620 | ||
2621 | nel = 0; | |
2622 | for (tr = r; tr; tr = tr->next) | |
2623 | nel++; | |
2624 | buf[0] = cpu_to_le32(nel); | |
2625 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
2626 | if (rc) | |
2627 | return rc; | |
2628 | for (tr = r; tr; tr = tr->next) { | |
2629 | buf[0] = cpu_to_le32(tr->role); | |
2630 | buf[1] = cpu_to_le32(tr->type); | |
2631 | buf[2] = cpu_to_le32(tr->new_role); | |
2632 | rc = put_entry(buf, sizeof(u32), 3, fp); | |
2633 | if (rc) | |
2634 | return rc; | |
c900ff32 HC |
2635 | if (p->policyvers >= POLICYDB_VERSION_ROLETRANS) { |
2636 | buf[0] = cpu_to_le32(tr->tclass); | |
2637 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
2638 | if (rc) | |
2639 | return rc; | |
2640 | } | |
cee74f47 EP |
2641 | } |
2642 | ||
2643 | return 0; | |
2644 | } | |
2645 | ||
2646 | static int role_allow_write(struct role_allow *r, void *fp) | |
2647 | { | |
2648 | struct role_allow *ra; | |
2649 | u32 buf[2]; | |
2650 | size_t nel; | |
2651 | int rc; | |
2652 | ||
2653 | nel = 0; | |
2654 | for (ra = r; ra; ra = ra->next) | |
2655 | nel++; | |
2656 | buf[0] = cpu_to_le32(nel); | |
2657 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
2658 | if (rc) | |
2659 | return rc; | |
2660 | for (ra = r; ra; ra = ra->next) { | |
2661 | buf[0] = cpu_to_le32(ra->role); | |
2662 | buf[1] = cpu_to_le32(ra->new_role); | |
2663 | rc = put_entry(buf, sizeof(u32), 2, fp); | |
2664 | if (rc) | |
2665 | return rc; | |
2666 | } | |
2667 | return 0; | |
2668 | } | |
2669 | ||
2670 | /* | |
2671 | * Write a security context structure | |
2672 | * to a policydb binary representation file. | |
2673 | */ | |
2674 | static int context_write(struct policydb *p, struct context *c, | |
2675 | void *fp) | |
2676 | { | |
2677 | int rc; | |
2678 | __le32 buf[3]; | |
2679 | ||
2680 | buf[0] = cpu_to_le32(c->user); | |
2681 | buf[1] = cpu_to_le32(c->role); | |
2682 | buf[2] = cpu_to_le32(c->type); | |
2683 | ||
2684 | rc = put_entry(buf, sizeof(u32), 3, fp); | |
2685 | if (rc) | |
2686 | return rc; | |
2687 | ||
2688 | rc = mls_write_range_helper(&c->range, fp); | |
2689 | if (rc) | |
2690 | return rc; | |
2691 | ||
2692 | return 0; | |
2693 | } | |
2694 | ||
2695 | /* | |
2696 | * The following *_write functions are used to | |
2697 | * write the symbol data to a policy database | |
2698 | * binary representation file. | |
2699 | */ | |
2700 | ||
2701 | static int perm_write(void *vkey, void *datum, void *fp) | |
2702 | { | |
2703 | char *key = vkey; | |
2704 | struct perm_datum *perdatum = datum; | |
2705 | __le32 buf[2]; | |
2706 | size_t len; | |
2707 | int rc; | |
2708 | ||
2709 | len = strlen(key); | |
2710 | buf[0] = cpu_to_le32(len); | |
2711 | buf[1] = cpu_to_le32(perdatum->value); | |
2712 | rc = put_entry(buf, sizeof(u32), 2, fp); | |
2713 | if (rc) | |
2714 | return rc; | |
2715 | ||
2716 | rc = put_entry(key, 1, len, fp); | |
2717 | if (rc) | |
2718 | return rc; | |
2719 | ||
2720 | return 0; | |
2721 | } | |
2722 | ||
2723 | static int common_write(void *vkey, void *datum, void *ptr) | |
2724 | { | |
2725 | char *key = vkey; | |
2726 | struct common_datum *comdatum = datum; | |
2727 | struct policy_data *pd = ptr; | |
2728 | void *fp = pd->fp; | |
2729 | __le32 buf[4]; | |
2730 | size_t len; | |
2731 | int rc; | |
2732 | ||
2733 | len = strlen(key); | |
2734 | buf[0] = cpu_to_le32(len); | |
2735 | buf[1] = cpu_to_le32(comdatum->value); | |
2736 | buf[2] = cpu_to_le32(comdatum->permissions.nprim); | |
2737 | buf[3] = cpu_to_le32(comdatum->permissions.table->nel); | |
2738 | rc = put_entry(buf, sizeof(u32), 4, fp); | |
2739 | if (rc) | |
2740 | return rc; | |
2741 | ||
2742 | rc = put_entry(key, 1, len, fp); | |
2743 | if (rc) | |
2744 | return rc; | |
2745 | ||
2746 | rc = hashtab_map(comdatum->permissions.table, perm_write, fp); | |
2747 | if (rc) | |
2748 | return rc; | |
2749 | ||
2750 | return 0; | |
2751 | } | |
2752 | ||
2753 | static int write_cons_helper(struct policydb *p, struct constraint_node *node, | |
2754 | void *fp) | |
2755 | { | |
2756 | struct constraint_node *c; | |
2757 | struct constraint_expr *e; | |
2758 | __le32 buf[3]; | |
2759 | u32 nel; | |
2760 | int rc; | |
2761 | ||
2762 | for (c = node; c; c = c->next) { | |
2763 | nel = 0; | |
2764 | for (e = c->expr; e; e = e->next) | |
2765 | nel++; | |
2766 | buf[0] = cpu_to_le32(c->permissions); | |
2767 | buf[1] = cpu_to_le32(nel); | |
2768 | rc = put_entry(buf, sizeof(u32), 2, fp); | |
2769 | if (rc) | |
2770 | return rc; | |
2771 | for (e = c->expr; e; e = e->next) { | |
2772 | buf[0] = cpu_to_le32(e->expr_type); | |
2773 | buf[1] = cpu_to_le32(e->attr); | |
2774 | buf[2] = cpu_to_le32(e->op); | |
2775 | rc = put_entry(buf, sizeof(u32), 3, fp); | |
2776 | if (rc) | |
2777 | return rc; | |
2778 | ||
2779 | switch (e->expr_type) { | |
2780 | case CEXPR_NAMES: | |
2781 | rc = ebitmap_write(&e->names, fp); | |
2782 | if (rc) | |
2783 | return rc; | |
2784 | break; | |
2785 | default: | |
2786 | break; | |
2787 | } | |
2788 | } | |
2789 | } | |
2790 | ||
2791 | return 0; | |
2792 | } | |
2793 | ||
2794 | static int class_write(void *vkey, void *datum, void *ptr) | |
2795 | { | |
2796 | char *key = vkey; | |
2797 | struct class_datum *cladatum = datum; | |
2798 | struct policy_data *pd = ptr; | |
2799 | void *fp = pd->fp; | |
2800 | struct policydb *p = pd->p; | |
2801 | struct constraint_node *c; | |
2802 | __le32 buf[6]; | |
2803 | u32 ncons; | |
2804 | size_t len, len2; | |
2805 | int rc; | |
2806 | ||
2807 | len = strlen(key); | |
2808 | if (cladatum->comkey) | |
2809 | len2 = strlen(cladatum->comkey); | |
2810 | else | |
2811 | len2 = 0; | |
2812 | ||
2813 | ncons = 0; | |
2814 | for (c = cladatum->constraints; c; c = c->next) | |
2815 | ncons++; | |
2816 | ||
2817 | buf[0] = cpu_to_le32(len); | |
2818 | buf[1] = cpu_to_le32(len2); | |
2819 | buf[2] = cpu_to_le32(cladatum->value); | |
2820 | buf[3] = cpu_to_le32(cladatum->permissions.nprim); | |
2821 | if (cladatum->permissions.table) | |
2822 | buf[4] = cpu_to_le32(cladatum->permissions.table->nel); | |
2823 | else | |
2824 | buf[4] = 0; | |
2825 | buf[5] = cpu_to_le32(ncons); | |
2826 | rc = put_entry(buf, sizeof(u32), 6, fp); | |
2827 | if (rc) | |
2828 | return rc; | |
2829 | ||
2830 | rc = put_entry(key, 1, len, fp); | |
2831 | if (rc) | |
2832 | return rc; | |
2833 | ||
2834 | if (cladatum->comkey) { | |
2835 | rc = put_entry(cladatum->comkey, 1, len2, fp); | |
2836 | if (rc) | |
2837 | return rc; | |
2838 | } | |
2839 | ||
2840 | rc = hashtab_map(cladatum->permissions.table, perm_write, fp); | |
2841 | if (rc) | |
2842 | return rc; | |
2843 | ||
2844 | rc = write_cons_helper(p, cladatum->constraints, fp); | |
2845 | if (rc) | |
2846 | return rc; | |
2847 | ||
2848 | /* write out the validatetrans rule */ | |
2849 | ncons = 0; | |
2850 | for (c = cladatum->validatetrans; c; c = c->next) | |
2851 | ncons++; | |
2852 | ||
2853 | buf[0] = cpu_to_le32(ncons); | |
2854 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
2855 | if (rc) | |
2856 | return rc; | |
2857 | ||
2858 | rc = write_cons_helper(p, cladatum->validatetrans, fp); | |
2859 | if (rc) | |
2860 | return rc; | |
2861 | ||
aa893269 EP |
2862 | if (p->policyvers >= POLICYDB_VERSION_NEW_OBJECT_DEFAULTS) { |
2863 | buf[0] = cpu_to_le32(cladatum->default_user); | |
2864 | buf[1] = cpu_to_le32(cladatum->default_role); | |
2865 | buf[2] = cpu_to_le32(cladatum->default_range); | |
2866 | ||
2867 | rc = put_entry(buf, sizeof(uint32_t), 3, fp); | |
2868 | if (rc) | |
2869 | return rc; | |
2870 | } | |
2871 | ||
eed7795d EP |
2872 | if (p->policyvers >= POLICYDB_VERSION_DEFAULT_TYPE) { |
2873 | buf[0] = cpu_to_le32(cladatum->default_type); | |
2874 | rc = put_entry(buf, sizeof(uint32_t), 1, fp); | |
2875 | if (rc) | |
2876 | return rc; | |
2877 | } | |
2878 | ||
cee74f47 EP |
2879 | return 0; |
2880 | } | |
2881 | ||
2882 | static int role_write(void *vkey, void *datum, void *ptr) | |
2883 | { | |
2884 | char *key = vkey; | |
2885 | struct role_datum *role = datum; | |
2886 | struct policy_data *pd = ptr; | |
2887 | void *fp = pd->fp; | |
2888 | struct policydb *p = pd->p; | |
2889 | __le32 buf[3]; | |
2890 | size_t items, len; | |
2891 | int rc; | |
2892 | ||
2893 | len = strlen(key); | |
2894 | items = 0; | |
2895 | buf[items++] = cpu_to_le32(len); | |
2896 | buf[items++] = cpu_to_le32(role->value); | |
2897 | if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) | |
2898 | buf[items++] = cpu_to_le32(role->bounds); | |
2899 | ||
2900 | BUG_ON(items > (sizeof(buf)/sizeof(buf[0]))); | |
2901 | ||
2902 | rc = put_entry(buf, sizeof(u32), items, fp); | |
2903 | if (rc) | |
2904 | return rc; | |
2905 | ||
2906 | rc = put_entry(key, 1, len, fp); | |
2907 | if (rc) | |
2908 | return rc; | |
2909 | ||
2910 | rc = ebitmap_write(&role->dominates, fp); | |
2911 | if (rc) | |
2912 | return rc; | |
2913 | ||
2914 | rc = ebitmap_write(&role->types, fp); | |
2915 | if (rc) | |
2916 | return rc; | |
2917 | ||
2918 | return 0; | |
2919 | } | |
2920 | ||
2921 | static int type_write(void *vkey, void *datum, void *ptr) | |
2922 | { | |
2923 | char *key = vkey; | |
2924 | struct type_datum *typdatum = datum; | |
2925 | struct policy_data *pd = ptr; | |
2926 | struct policydb *p = pd->p; | |
2927 | void *fp = pd->fp; | |
2928 | __le32 buf[4]; | |
2929 | int rc; | |
2930 | size_t items, len; | |
2931 | ||
2932 | len = strlen(key); | |
2933 | items = 0; | |
2934 | buf[items++] = cpu_to_le32(len); | |
2935 | buf[items++] = cpu_to_le32(typdatum->value); | |
2936 | if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) { | |
2937 | u32 properties = 0; | |
2938 | ||
2939 | if (typdatum->primary) | |
2940 | properties |= TYPEDATUM_PROPERTY_PRIMARY; | |
2941 | ||
2942 | if (typdatum->attribute) | |
2943 | properties |= TYPEDATUM_PROPERTY_ATTRIBUTE; | |
2944 | ||
2945 | buf[items++] = cpu_to_le32(properties); | |
2946 | buf[items++] = cpu_to_le32(typdatum->bounds); | |
2947 | } else { | |
2948 | buf[items++] = cpu_to_le32(typdatum->primary); | |
2949 | } | |
2950 | BUG_ON(items > (sizeof(buf) / sizeof(buf[0]))); | |
2951 | rc = put_entry(buf, sizeof(u32), items, fp); | |
2952 | if (rc) | |
2953 | return rc; | |
2954 | ||
2955 | rc = put_entry(key, 1, len, fp); | |
2956 | if (rc) | |
2957 | return rc; | |
2958 | ||
2959 | return 0; | |
2960 | } | |
2961 | ||
2962 | static int user_write(void *vkey, void *datum, void *ptr) | |
2963 | { | |
2964 | char *key = vkey; | |
2965 | struct user_datum *usrdatum = datum; | |
2966 | struct policy_data *pd = ptr; | |
2967 | struct policydb *p = pd->p; | |
2968 | void *fp = pd->fp; | |
2969 | __le32 buf[3]; | |
2970 | size_t items, len; | |
2971 | int rc; | |
2972 | ||
2973 | len = strlen(key); | |
2974 | items = 0; | |
2975 | buf[items++] = cpu_to_le32(len); | |
2976 | buf[items++] = cpu_to_le32(usrdatum->value); | |
2977 | if (p->policyvers >= POLICYDB_VERSION_BOUNDARY) | |
2978 | buf[items++] = cpu_to_le32(usrdatum->bounds); | |
2979 | BUG_ON(items > (sizeof(buf) / sizeof(buf[0]))); | |
2980 | rc = put_entry(buf, sizeof(u32), items, fp); | |
2981 | if (rc) | |
2982 | return rc; | |
2983 | ||
2984 | rc = put_entry(key, 1, len, fp); | |
2985 | if (rc) | |
2986 | return rc; | |
2987 | ||
2988 | rc = ebitmap_write(&usrdatum->roles, fp); | |
2989 | if (rc) | |
2990 | return rc; | |
2991 | ||
2992 | rc = mls_write_range_helper(&usrdatum->range, fp); | |
2993 | if (rc) | |
2994 | return rc; | |
2995 | ||
2996 | rc = mls_write_level(&usrdatum->dfltlevel, fp); | |
2997 | if (rc) | |
2998 | return rc; | |
2999 | ||
3000 | return 0; | |
3001 | } | |
3002 | ||
3003 | static int (*write_f[SYM_NUM]) (void *key, void *datum, | |
3004 | void *datap) = | |
3005 | { | |
3006 | common_write, | |
3007 | class_write, | |
3008 | role_write, | |
3009 | type_write, | |
3010 | user_write, | |
3011 | cond_write_bool, | |
3012 | sens_write, | |
3013 | cat_write, | |
3014 | }; | |
3015 | ||
3016 | static int ocontext_write(struct policydb *p, struct policydb_compat_info *info, | |
3017 | void *fp) | |
3018 | { | |
3019 | unsigned int i, j, rc; | |
3020 | size_t nel, len; | |
3021 | __le32 buf[3]; | |
3022 | u32 nodebuf[8]; | |
3023 | struct ocontext *c; | |
3024 | for (i = 0; i < info->ocon_num; i++) { | |
3025 | nel = 0; | |
3026 | for (c = p->ocontexts[i]; c; c = c->next) | |
3027 | nel++; | |
3028 | buf[0] = cpu_to_le32(nel); | |
3029 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3030 | if (rc) | |
3031 | return rc; | |
3032 | for (c = p->ocontexts[i]; c; c = c->next) { | |
3033 | switch (i) { | |
3034 | case OCON_ISID: | |
3035 | buf[0] = cpu_to_le32(c->sid[0]); | |
3036 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3037 | if (rc) | |
3038 | return rc; | |
3039 | rc = context_write(p, &c->context[0], fp); | |
3040 | if (rc) | |
3041 | return rc; | |
3042 | break; | |
3043 | case OCON_FS: | |
3044 | case OCON_NETIF: | |
3045 | len = strlen(c->u.name); | |
3046 | buf[0] = cpu_to_le32(len); | |
3047 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3048 | if (rc) | |
3049 | return rc; | |
3050 | rc = put_entry(c->u.name, 1, len, fp); | |
3051 | if (rc) | |
3052 | return rc; | |
3053 | rc = context_write(p, &c->context[0], fp); | |
3054 | if (rc) | |
3055 | return rc; | |
3056 | rc = context_write(p, &c->context[1], fp); | |
3057 | if (rc) | |
3058 | return rc; | |
3059 | break; | |
3060 | case OCON_PORT: | |
3061 | buf[0] = cpu_to_le32(c->u.port.protocol); | |
3062 | buf[1] = cpu_to_le32(c->u.port.low_port); | |
3063 | buf[2] = cpu_to_le32(c->u.port.high_port); | |
3064 | rc = put_entry(buf, sizeof(u32), 3, fp); | |
3065 | if (rc) | |
3066 | return rc; | |
3067 | rc = context_write(p, &c->context[0], fp); | |
3068 | if (rc) | |
3069 | return rc; | |
3070 | break; | |
3071 | case OCON_NODE: | |
3072 | nodebuf[0] = c->u.node.addr; /* network order */ | |
3073 | nodebuf[1] = c->u.node.mask; /* network order */ | |
3074 | rc = put_entry(nodebuf, sizeof(u32), 2, fp); | |
3075 | if (rc) | |
3076 | return rc; | |
3077 | rc = context_write(p, &c->context[0], fp); | |
3078 | if (rc) | |
3079 | return rc; | |
3080 | break; | |
3081 | case OCON_FSUSE: | |
3082 | buf[0] = cpu_to_le32(c->v.behavior); | |
3083 | len = strlen(c->u.name); | |
3084 | buf[1] = cpu_to_le32(len); | |
3085 | rc = put_entry(buf, sizeof(u32), 2, fp); | |
3086 | if (rc) | |
3087 | return rc; | |
3088 | rc = put_entry(c->u.name, 1, len, fp); | |
3089 | if (rc) | |
3090 | return rc; | |
3091 | rc = context_write(p, &c->context[0], fp); | |
3092 | if (rc) | |
3093 | return rc; | |
3094 | break; | |
3095 | case OCON_NODE6: | |
3096 | for (j = 0; j < 4; j++) | |
3097 | nodebuf[j] = c->u.node6.addr[j]; /* network order */ | |
3098 | for (j = 0; j < 4; j++) | |
3099 | nodebuf[j + 4] = c->u.node6.mask[j]; /* network order */ | |
3100 | rc = put_entry(nodebuf, sizeof(u32), 8, fp); | |
3101 | if (rc) | |
3102 | return rc; | |
3103 | rc = context_write(p, &c->context[0], fp); | |
3104 | if (rc) | |
3105 | return rc; | |
3106 | break; | |
3107 | } | |
3108 | } | |
3109 | } | |
3110 | return 0; | |
3111 | } | |
3112 | ||
3113 | static int genfs_write(struct policydb *p, void *fp) | |
3114 | { | |
3115 | struct genfs *genfs; | |
3116 | struct ocontext *c; | |
3117 | size_t len; | |
3118 | __le32 buf[1]; | |
3119 | int rc; | |
3120 | ||
3121 | len = 0; | |
3122 | for (genfs = p->genfs; genfs; genfs = genfs->next) | |
3123 | len++; | |
3124 | buf[0] = cpu_to_le32(len); | |
3125 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3126 | if (rc) | |
3127 | return rc; | |
3128 | for (genfs = p->genfs; genfs; genfs = genfs->next) { | |
3129 | len = strlen(genfs->fstype); | |
3130 | buf[0] = cpu_to_le32(len); | |
3131 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3132 | if (rc) | |
3133 | return rc; | |
3134 | rc = put_entry(genfs->fstype, 1, len, fp); | |
3135 | if (rc) | |
3136 | return rc; | |
3137 | len = 0; | |
3138 | for (c = genfs->head; c; c = c->next) | |
3139 | len++; | |
3140 | buf[0] = cpu_to_le32(len); | |
3141 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3142 | if (rc) | |
3143 | return rc; | |
3144 | for (c = genfs->head; c; c = c->next) { | |
3145 | len = strlen(c->u.name); | |
3146 | buf[0] = cpu_to_le32(len); | |
3147 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3148 | if (rc) | |
3149 | return rc; | |
3150 | rc = put_entry(c->u.name, 1, len, fp); | |
3151 | if (rc) | |
3152 | return rc; | |
3153 | buf[0] = cpu_to_le32(c->v.sclass); | |
3154 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3155 | if (rc) | |
3156 | return rc; | |
3157 | rc = context_write(p, &c->context[0], fp); | |
3158 | if (rc) | |
3159 | return rc; | |
3160 | } | |
3161 | } | |
3162 | return 0; | |
3163 | } | |
3164 | ||
3f058ef7 | 3165 | static int hashtab_cnt(void *key, void *data, void *ptr) |
cee74f47 EP |
3166 | { |
3167 | int *cnt = ptr; | |
3168 | *cnt = *cnt + 1; | |
3169 | ||
3170 | return 0; | |
3171 | } | |
3172 | ||
3173 | static int range_write_helper(void *key, void *data, void *ptr) | |
3174 | { | |
3175 | __le32 buf[2]; | |
3176 | struct range_trans *rt = key; | |
3177 | struct mls_range *r = data; | |
3178 | struct policy_data *pd = ptr; | |
3179 | void *fp = pd->fp; | |
3180 | struct policydb *p = pd->p; | |
3181 | int rc; | |
3182 | ||
3183 | buf[0] = cpu_to_le32(rt->source_type); | |
3184 | buf[1] = cpu_to_le32(rt->target_type); | |
3185 | rc = put_entry(buf, sizeof(u32), 2, fp); | |
3186 | if (rc) | |
3187 | return rc; | |
3188 | if (p->policyvers >= POLICYDB_VERSION_RANGETRANS) { | |
3189 | buf[0] = cpu_to_le32(rt->target_class); | |
3190 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3191 | if (rc) | |
3192 | return rc; | |
3193 | } | |
3194 | rc = mls_write_range_helper(r, fp); | |
3195 | if (rc) | |
3196 | return rc; | |
3197 | ||
3198 | return 0; | |
3199 | } | |
3200 | ||
3201 | static int range_write(struct policydb *p, void *fp) | |
3202 | { | |
3203 | size_t nel; | |
3204 | __le32 buf[1]; | |
3205 | int rc; | |
3206 | struct policy_data pd; | |
3207 | ||
3208 | pd.p = p; | |
3209 | pd.fp = fp; | |
3210 | ||
3211 | /* count the number of entries in the hashtab */ | |
3212 | nel = 0; | |
3f058ef7 | 3213 | rc = hashtab_map(p->range_tr, hashtab_cnt, &nel); |
cee74f47 EP |
3214 | if (rc) |
3215 | return rc; | |
3216 | ||
3217 | buf[0] = cpu_to_le32(nel); | |
3218 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3219 | if (rc) | |
3220 | return rc; | |
3221 | ||
3222 | /* actually write all of the entries */ | |
3223 | rc = hashtab_map(p->range_tr, range_write_helper, &pd); | |
3224 | if (rc) | |
3225 | return rc; | |
3226 | ||
3227 | return 0; | |
3228 | } | |
3229 | ||
2463c26d | 3230 | static int filename_write_helper(void *key, void *data, void *ptr) |
652bb9b0 | 3231 | { |
652bb9b0 | 3232 | __le32 buf[4]; |
2463c26d EP |
3233 | struct filename_trans *ft = key; |
3234 | struct filename_trans_datum *otype = data; | |
3235 | void *fp = ptr; | |
652bb9b0 | 3236 | int rc; |
2463c26d | 3237 | u32 len; |
652bb9b0 | 3238 | |
2463c26d EP |
3239 | len = strlen(ft->name); |
3240 | buf[0] = cpu_to_le32(len); | |
652bb9b0 EP |
3241 | rc = put_entry(buf, sizeof(u32), 1, fp); |
3242 | if (rc) | |
3243 | return rc; | |
3244 | ||
2463c26d EP |
3245 | rc = put_entry(ft->name, sizeof(char), len, fp); |
3246 | if (rc) | |
3247 | return rc; | |
652bb9b0 | 3248 | |
2463c26d EP |
3249 | buf[0] = ft->stype; |
3250 | buf[1] = ft->ttype; | |
3251 | buf[2] = ft->tclass; | |
3252 | buf[3] = otype->otype; | |
652bb9b0 | 3253 | |
2463c26d EP |
3254 | rc = put_entry(buf, sizeof(u32), 4, fp); |
3255 | if (rc) | |
3256 | return rc; | |
652bb9b0 | 3257 | |
652bb9b0 EP |
3258 | return 0; |
3259 | } | |
2463c26d EP |
3260 | |
3261 | static int filename_trans_write(struct policydb *p, void *fp) | |
3262 | { | |
3263 | u32 nel; | |
3264 | __le32 buf[1]; | |
3265 | int rc; | |
3266 | ||
ded50988 RL |
3267 | if (p->policyvers < POLICYDB_VERSION_FILENAME_TRANS) |
3268 | return 0; | |
3269 | ||
2463c26d EP |
3270 | nel = 0; |
3271 | rc = hashtab_map(p->filename_trans, hashtab_cnt, &nel); | |
3272 | if (rc) | |
3273 | return rc; | |
3274 | ||
3275 | buf[0] = cpu_to_le32(nel); | |
3276 | rc = put_entry(buf, sizeof(u32), 1, fp); | |
3277 | if (rc) | |
3278 | return rc; | |
3279 | ||
3280 | rc = hashtab_map(p->filename_trans, filename_write_helper, fp); | |
3281 | if (rc) | |
3282 | return rc; | |
3283 | ||
3284 | return 0; | |
3285 | } | |
3286 | ||
cee74f47 EP |
3287 | /* |
3288 | * Write the configuration data in a policy database | |
3289 | * structure to a policy database binary representation | |
3290 | * file. | |
3291 | */ | |
3292 | int policydb_write(struct policydb *p, void *fp) | |
3293 | { | |
3294 | unsigned int i, num_syms; | |
3295 | int rc; | |
3296 | __le32 buf[4]; | |
3297 | u32 config; | |
3298 | size_t len; | |
3299 | struct policydb_compat_info *info; | |
3300 | ||
3301 | /* | |
3302 | * refuse to write policy older than compressed avtab | |
3303 | * to simplify the writer. There are other tests dropped | |
3304 | * since we assume this throughout the writer code. Be | |
3305 | * careful if you ever try to remove this restriction | |
3306 | */ | |
3307 | if (p->policyvers < POLICYDB_VERSION_AVTAB) { | |
3308 | printk(KERN_ERR "SELinux: refusing to write policy version %d." | |
3309 | " Because it is less than version %d\n", p->policyvers, | |
3310 | POLICYDB_VERSION_AVTAB); | |
3311 | return -EINVAL; | |
3312 | } | |
3313 | ||
3314 | config = 0; | |
3315 | if (p->mls_enabled) | |
3316 | config |= POLICYDB_CONFIG_MLS; | |
3317 | ||
3318 | if (p->reject_unknown) | |
3319 | config |= REJECT_UNKNOWN; | |
3320 | if (p->allow_unknown) | |
3321 | config |= ALLOW_UNKNOWN; | |
3322 | ||
3323 | /* Write the magic number and string identifiers. */ | |
3324 | buf[0] = cpu_to_le32(POLICYDB_MAGIC); | |
3325 | len = strlen(POLICYDB_STRING); | |
3326 | buf[1] = cpu_to_le32(len); | |
3327 | rc = put_entry(buf, sizeof(u32), 2, fp); | |
3328 | if (rc) | |
3329 | return rc; | |
3330 | rc = put_entry(POLICYDB_STRING, 1, len, fp); | |
3331 | if (rc) | |
3332 | return rc; | |
3333 | ||
3334 | /* Write the version, config, and table sizes. */ | |
3335 | info = policydb_lookup_compat(p->policyvers); | |
3336 | if (!info) { | |
3337 | printk(KERN_ERR "SELinux: compatibility lookup failed for policy " | |
3338 | "version %d", p->policyvers); | |
9398c7f7 | 3339 | return -EINVAL; |
cee74f47 EP |
3340 | } |
3341 | ||
3342 | buf[0] = cpu_to_le32(p->policyvers); | |
3343 | buf[1] = cpu_to_le32(config); | |
3344 | buf[2] = cpu_to_le32(info->sym_num); | |
3345 | buf[3] = cpu_to_le32(info->ocon_num); | |
3346 | ||
3347 | rc = put_entry(buf, sizeof(u32), 4, fp); | |
3348 | if (rc) | |
3349 | return rc; | |
3350 | ||
3351 | if (p->policyvers >= POLICYDB_VERSION_POLCAP) { | |
3352 | rc = ebitmap_write(&p->policycaps, fp); | |
3353 | if (rc) | |
3354 | return rc; | |
3355 | } | |
3356 | ||
3357 | if (p->policyvers >= POLICYDB_VERSION_PERMISSIVE) { | |
3358 | rc = ebitmap_write(&p->permissive_map, fp); | |
3359 | if (rc) | |
3360 | return rc; | |
3361 | } | |
3362 | ||
3363 | num_syms = info->sym_num; | |
3364 | for (i = 0; i < num_syms; i++) { | |
3365 | struct policy_data pd; | |
3366 | ||
3367 | pd.fp = fp; | |
3368 | pd.p = p; | |
3369 | ||
3370 | buf[0] = cpu_to_le32(p->symtab[i].nprim); | |
3371 | buf[1] = cpu_to_le32(p->symtab[i].table->nel); | |
3372 | ||
3373 | rc = put_entry(buf, sizeof(u32), 2, fp); | |
3374 | if (rc) | |
3375 | return rc; | |
3376 | rc = hashtab_map(p->symtab[i].table, write_f[i], &pd); | |
3377 | if (rc) | |
3378 | return rc; | |
3379 | } | |
3380 | ||
3381 | rc = avtab_write(p, &p->te_avtab, fp); | |
3382 | if (rc) | |
3383 | return rc; | |
3384 | ||
3385 | rc = cond_write_list(p, p->cond_list, fp); | |
3386 | if (rc) | |
3387 | return rc; | |
3388 | ||
c900ff32 | 3389 | rc = role_trans_write(p, fp); |
cee74f47 EP |
3390 | if (rc) |
3391 | return rc; | |
3392 | ||
3393 | rc = role_allow_write(p->role_allow, fp); | |
3394 | if (rc) | |
3395 | return rc; | |
3396 | ||
652bb9b0 EP |
3397 | rc = filename_trans_write(p, fp); |
3398 | if (rc) | |
3399 | return rc; | |
3400 | ||
cee74f47 EP |
3401 | rc = ocontext_write(p, info, fp); |
3402 | if (rc) | |
3403 | return rc; | |
3404 | ||
3405 | rc = genfs_write(p, fp); | |
3406 | if (rc) | |
3407 | return rc; | |
3408 | ||
3409 | rc = range_write(p, fp); | |
3410 | if (rc) | |
3411 | return rc; | |
3412 | ||
3413 | for (i = 0; i < p->p_types.nprim; i++) { | |
3414 | struct ebitmap *e = flex_array_get(p->type_attr_map_array, i); | |
3415 | ||
3416 | BUG_ON(!e); | |
3417 | rc = ebitmap_write(e, fp); | |
3418 | if (rc) | |
3419 | return rc; | |
3420 | } | |
3421 | ||
3422 | return 0; | |
3423 | } |