diff options
-rw-r--r-- | security/selinux/ss/conditional.c | 59 |
1 files changed, 26 insertions, 33 deletions
diff --git a/security/selinux/ss/conditional.c b/security/selinux/ss/conditional.c index a996cf1d378a..5691af498c40 100644 --- a/security/selinux/ss/conditional.c +++ b/security/selinux/ss/conditional.c | |||
@@ -1,9 +1,9 @@ | |||
1 | /* Authors: Karl MacMillan <kmacmillan@tresys.com> | 1 | /* Authors: Karl MacMillan <kmacmillan@tresys.com> |
2 | * Frank Mayer <mayerf@tresys.com> | 2 | * Frank Mayer <mayerf@tresys.com> |
3 | * | 3 | * |
4 | * Copyright (C) 2003 - 2004 Tresys Technology, LLC | 4 | * Copyright (C) 2003 - 2004 Tresys Technology, LLC |
5 | * This program is free software; you can redistribute it and/or modify | 5 | * This program is free software; you can redistribute it and/or modify |
6 | * it under the terms of the GNU General Public License as published by | 6 | * it under the terms of the GNU General Public License as published by |
7 | * the Free Software Foundation, version 2. | 7 | * the Free Software Foundation, version 2. |
8 | */ | 8 | */ |
9 | 9 | ||
@@ -90,7 +90,7 @@ static int cond_evaluate_expr(struct policydb *p, struct cond_expr *expr) | |||
90 | int evaluate_cond_node(struct policydb *p, struct cond_node *node) | 90 | int evaluate_cond_node(struct policydb *p, struct cond_node *node) |
91 | { | 91 | { |
92 | int new_state; | 92 | int new_state; |
93 | struct cond_av_list* cur; | 93 | struct cond_av_list *cur; |
94 | 94 | ||
95 | new_state = cond_evaluate_expr(p, node->expr); | 95 | new_state = cond_evaluate_expr(p, node->expr); |
96 | if (new_state != node->cur_state) { | 96 | if (new_state != node->cur_state) { |
@@ -99,20 +99,18 @@ int evaluate_cond_node(struct policydb *p, struct cond_node *node) | |||
99 | printk(KERN_ERR "SELinux: expression result was undefined - disabling all rules.\n"); | 99 | printk(KERN_ERR "SELinux: expression result was undefined - disabling all rules.\n"); |
100 | /* turn the rules on or off */ | 100 | /* turn the rules on or off */ |
101 | for (cur = node->true_list; cur != NULL; cur = cur->next) { | 101 | for (cur = node->true_list; cur != NULL; cur = cur->next) { |
102 | if (new_state <= 0) { | 102 | if (new_state <= 0) |
103 | cur->node->key.specified &= ~AVTAB_ENABLED; | 103 | cur->node->key.specified &= ~AVTAB_ENABLED; |
104 | } else { | 104 | else |
105 | cur->node->key.specified |= AVTAB_ENABLED; | 105 | cur->node->key.specified |= AVTAB_ENABLED; |
106 | } | ||
107 | } | 106 | } |
108 | 107 | ||
109 | for (cur = node->false_list; cur != NULL; cur = cur->next) { | 108 | for (cur = node->false_list; cur != NULL; cur = cur->next) { |
110 | /* -1 or 1 */ | 109 | /* -1 or 1 */ |
111 | if (new_state) { | 110 | if (new_state) |
112 | cur->node->key.specified &= ~AVTAB_ENABLED; | 111 | cur->node->key.specified &= ~AVTAB_ENABLED; |
113 | } else { | 112 | else |
114 | cur->node->key.specified |= AVTAB_ENABLED; | 113 | cur->node->key.specified |= AVTAB_ENABLED; |
115 | } | ||
116 | } | 114 | } |
117 | } | 115 | } |
118 | return 0; | 116 | return 0; |
@@ -174,8 +172,8 @@ void cond_policydb_destroy(struct policydb *p) | |||
174 | int cond_init_bool_indexes(struct policydb *p) | 172 | int cond_init_bool_indexes(struct policydb *p) |
175 | { | 173 | { |
176 | kfree(p->bool_val_to_struct); | 174 | kfree(p->bool_val_to_struct); |
177 | p->bool_val_to_struct = (struct cond_bool_datum**) | 175 | p->bool_val_to_struct = (struct cond_bool_datum **) |
178 | kmalloc(p->p_bools.nprim * sizeof(struct cond_bool_datum*), GFP_KERNEL); | 176 | kmalloc(p->p_bools.nprim * sizeof(struct cond_bool_datum *), GFP_KERNEL); |
179 | if (!p->bool_val_to_struct) | 177 | if (!p->bool_val_to_struct) |
180 | return -1; | 178 | return -1; |
181 | return 0; | 179 | return 0; |
@@ -200,7 +198,7 @@ int cond_index_bool(void *key, void *datum, void *datap) | |||
200 | return -EINVAL; | 198 | return -EINVAL; |
201 | 199 | ||
202 | p->p_bool_val_to_name[booldatum->value - 1] = key; | 200 | p->p_bool_val_to_name[booldatum->value - 1] = key; |
203 | p->bool_val_to_struct[booldatum->value -1] = booldatum; | 201 | p->bool_val_to_struct[booldatum->value - 1] = booldatum; |
204 | 202 | ||
205 | return 0; | 203 | return 0; |
206 | } | 204 | } |
@@ -252,8 +250,7 @@ err: | |||
252 | return -1; | 250 | return -1; |
253 | } | 251 | } |
254 | 252 | ||
255 | struct cond_insertf_data | 253 | struct cond_insertf_data { |
256 | { | ||
257 | struct policydb *p; | 254 | struct policydb *p; |
258 | struct cond_av_list *other; | 255 | struct cond_av_list *other; |
259 | struct cond_av_list *head; | 256 | struct cond_av_list *head; |
@@ -353,9 +350,8 @@ static int cond_read_av_list(struct policydb *p, void *fp, struct cond_av_list * | |||
353 | return -1; | 350 | return -1; |
354 | 351 | ||
355 | len = le32_to_cpu(buf[0]); | 352 | len = le32_to_cpu(buf[0]); |
356 | if (len == 0) { | 353 | if (len == 0) |
357 | return 0; | 354 | return 0; |
358 | } | ||
359 | 355 | ||
360 | data.p = p; | 356 | data.p = p; |
361 | data.other = other; | 357 | data.other = other; |
@@ -408,15 +404,14 @@ static int cond_read_node(struct policydb *p, struct cond_node *node, void *fp) | |||
408 | /* expr */ | 404 | /* expr */ |
409 | len = le32_to_cpu(buf[0]); | 405 | len = le32_to_cpu(buf[0]); |
410 | 406 | ||
411 | for (i = 0; i < len; i++ ) { | 407 | for (i = 0; i < len; i++) { |
412 | rc = next_entry(buf, fp, sizeof(u32) * 2); | 408 | rc = next_entry(buf, fp, sizeof(u32) * 2); |
413 | if (rc < 0) | 409 | if (rc < 0) |
414 | goto err; | 410 | goto err; |
415 | 411 | ||
416 | expr = kzalloc(sizeof(struct cond_expr), GFP_KERNEL); | 412 | expr = kzalloc(sizeof(struct cond_expr), GFP_KERNEL); |
417 | if (!expr) { | 413 | if (!expr) |
418 | goto err; | 414 | goto err; |
419 | } | ||
420 | 415 | ||
421 | expr->expr_type = le32_to_cpu(buf[0]); | 416 | expr->expr_type = le32_to_cpu(buf[0]); |
422 | expr->bool = le32_to_cpu(buf[1]); | 417 | expr->bool = le32_to_cpu(buf[1]); |
@@ -426,11 +421,10 @@ static int cond_read_node(struct policydb *p, struct cond_node *node, void *fp) | |||
426 | goto err; | 421 | goto err; |
427 | } | 422 | } |
428 | 423 | ||
429 | if (i == 0) { | 424 | if (i == 0) |
430 | node->expr = expr; | 425 | node->expr = expr; |
431 | } else { | 426 | else |
432 | last->next = expr; | 427 | last->next = expr; |
433 | } | ||
434 | last = expr; | 428 | last = expr; |
435 | } | 429 | } |
436 | 430 | ||
@@ -469,11 +463,10 @@ int cond_read_list(struct policydb *p, void *fp) | |||
469 | if (cond_read_node(p, node, fp) != 0) | 463 | if (cond_read_node(p, node, fp) != 0) |
470 | goto err; | 464 | goto err; |
471 | 465 | ||
472 | if (i == 0) { | 466 | if (i == 0) |
473 | p->cond_list = node; | 467 | p->cond_list = node; |
474 | } else { | 468 | else |
475 | last->next = node; | 469 | last->next = node; |
476 | } | ||
477 | last = node; | 470 | last = node; |
478 | } | 471 | } |
479 | return 0; | 472 | return 0; |
@@ -490,24 +483,24 @@ void cond_compute_av(struct avtab *ctab, struct avtab_key *key, struct av_decisi | |||
490 | { | 483 | { |
491 | struct avtab_node *node; | 484 | struct avtab_node *node; |
492 | 485 | ||
493 | if(!ctab || !key || !avd) | 486 | if (!ctab || !key || !avd) |
494 | return; | 487 | return; |
495 | 488 | ||
496 | for(node = avtab_search_node(ctab, key); node != NULL; | 489 | for (node = avtab_search_node(ctab, key); node != NULL; |
497 | node = avtab_search_node_next(node, key->specified)) { | 490 | node = avtab_search_node_next(node, key->specified)) { |
498 | if ( (u16) (AVTAB_ALLOWED|AVTAB_ENABLED) == | 491 | if ((u16)(AVTAB_ALLOWED|AVTAB_ENABLED) == |
499 | (node->key.specified & (AVTAB_ALLOWED|AVTAB_ENABLED))) | 492 | (node->key.specified & (AVTAB_ALLOWED|AVTAB_ENABLED))) |
500 | avd->allowed |= node->datum.data; | 493 | avd->allowed |= node->datum.data; |
501 | if ( (u16) (AVTAB_AUDITDENY|AVTAB_ENABLED) == | 494 | if ((u16)(AVTAB_AUDITDENY|AVTAB_ENABLED) == |
502 | (node->key.specified & (AVTAB_AUDITDENY|AVTAB_ENABLED))) | 495 | (node->key.specified & (AVTAB_AUDITDENY|AVTAB_ENABLED))) |
503 | /* Since a '0' in an auditdeny mask represents a | 496 | /* Since a '0' in an auditdeny mask represents a |
504 | * permission we do NOT want to audit (dontaudit), we use | 497 | * permission we do NOT want to audit (dontaudit), we use |
505 | * the '&' operand to ensure that all '0's in the mask | 498 | * the '&' operand to ensure that all '0's in the mask |
506 | * are retained (much unlike the allow and auditallow cases). | 499 | * are retained (much unlike the allow and auditallow cases). |
507 | */ | 500 | */ |
508 | avd->auditdeny &= node->datum.data; | 501 | avd->auditdeny &= node->datum.data; |
509 | if ( (u16) (AVTAB_AUDITALLOW|AVTAB_ENABLED) == | 502 | if ((u16)(AVTAB_AUDITALLOW|AVTAB_ENABLED) == |
510 | (node->key.specified & (AVTAB_AUDITALLOW|AVTAB_ENABLED))) | 503 | (node->key.specified & (AVTAB_AUDITALLOW|AVTAB_ENABLED))) |
511 | avd->auditallow |= node->datum.data; | 504 | avd->auditallow |= node->datum.data; |
512 | } | 505 | } |
513 | return; | 506 | return; |