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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * Security plug functions | |
3 | * | |
4 | * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> | |
5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
6 | * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> | |
d291f1a6 | 7 | * Copyright (C) 2016 Mellanox Technologies |
1da177e4 LT |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | */ | |
14 | ||
c59ede7b | 15 | #include <linux/capability.h> |
d47be3df | 16 | #include <linux/dcache.h> |
1da177e4 LT |
17 | #include <linux/module.h> |
18 | #include <linux/init.h> | |
19 | #include <linux/kernel.h> | |
3c4ed7bd | 20 | #include <linux/lsm_hooks.h> |
f381c272 | 21 | #include <linux/integrity.h> |
6c21a7fb | 22 | #include <linux/ima.h> |
3e1be52d | 23 | #include <linux/evm.h> |
40401530 | 24 | #include <linux/fsnotify.h> |
8b3ec681 AV |
25 | #include <linux/mman.h> |
26 | #include <linux/mount.h> | |
27 | #include <linux/personality.h> | |
75331a59 | 28 | #include <linux/backing-dev.h> |
3bb857e4 | 29 | #include <linux/string.h> |
ac8f82a0 | 30 | #include <linux/msg.h> |
ab5e2f3f | 31 | #include <linux/prctl.h> |
40401530 | 32 | #include <net/flow.h> |
ac8f82a0 | 33 | #include <net/sock.h> |
1da177e4 | 34 | |
823eb1cc | 35 | #define MAX_LSM_EVM_XATTR 2 |
1da177e4 | 36 | |
b1d9e6b0 CS |
37 | /* Maximum number of letters for an LSM name string */ |
38 | #define SECURITY_NAME_MAX 10 | |
2106feaf | 39 | #define SECURITY_CHOSEN_NAMES_MAX (SECURITY_NAME_MAX * LSM_MAX_MAJOR) |
a3c3cde2 | 40 | #define MODULE_STACK "(stacking)" |
b1d9e6b0 | 41 | |
3dfc9b02 | 42 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
8f408ab6 DJ |
43 | static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain); |
44 | ||
d69dece5 | 45 | char *lsm_names; |
ab5e2f3f JJ |
46 | |
47 | /* | |
48 | * If stacking is enabled the task blob will always | |
49 | * include an indicator of what security module data | |
50 | * should be displayed. This is set with PR_SET_DISPLAY_LSM. | |
51 | */ | |
52 | static struct lsm_blob_sizes blob_sizes = { | |
53 | #ifdef CONFIG_SECURITY_STACKING | |
af50aca1 | 54 | .lbs_task = SECURITY_NAME_MAX + 6, |
ab5e2f3f JJ |
55 | #endif |
56 | }; | |
98738d70 | 57 | |
076c54c5 | 58 | /* Boot-time LSM user choice */ |
2106feaf | 59 | static __initdata char chosen_lsms[SECURITY_CHOSEN_NAMES_MAX + 1] = |
a3c3cde2 CS |
60 | #ifdef CONFIG_SECURITY_STACKING |
61 | MODULE_STACK; | |
62 | #else | |
6e65f92f | 63 | CONFIG_DEFAULT_SECURITY; |
a3c3cde2 | 64 | #endif |
15d2143f JJ |
65 | static __initdata char chosen_display_lsm[SECURITY_NAME_MAX + 1]; |
66 | static char default_display_lsm[SECURITY_NAME_MAX + 1]; | |
1da177e4 | 67 | |
1da177e4 LT |
68 | static void __init do_security_initcalls(void) |
69 | { | |
70 | initcall_t *call; | |
71 | call = __security_initcall_start; | |
72 | while (call < __security_initcall_end) { | |
73 | (*call) (); | |
74 | call++; | |
75 | } | |
76 | } | |
77 | ||
78 | /** | |
79 | * security_init - initializes the security framework | |
80 | * | |
81 | * This should be called early in the kernel initialization sequence. | |
82 | */ | |
83 | int __init security_init(void) | |
84 | { | |
3dfc9b02 TH |
85 | int i; |
86 | struct list_head *list = (struct list_head *) &security_hook_heads; | |
87 | ||
88 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head); | |
89 | i++) | |
90 | INIT_LIST_HEAD(&list[i]); | |
b1d9e6b0 | 91 | pr_info("Security Framework initialized\n"); |
1da177e4 | 92 | |
b1d9e6b0 | 93 | /* |
730daa16 | 94 | * Load minor LSMs, with the capability module always first. |
b1d9e6b0 CS |
95 | */ |
96 | capability_add_hooks(); | |
b1d9e6b0 | 97 | yama_add_hooks(); |
9b091556 | 98 | loadpin_add_hooks(); |
730daa16 | 99 | |
b1d9e6b0 | 100 | /* |
98738d70 CS |
101 | * The first call to a module specific init function |
102 | * updates the blob size requirements. | |
103 | */ | |
104 | do_security_initcalls(); | |
105 | ||
106 | /* | |
107 | * The second call to a module specific init function | |
108 | * adds hooks to the hook lists and does any other early | |
109 | * initializations required. | |
b1d9e6b0 | 110 | */ |
1da177e4 LT |
111 | do_security_initcalls(); |
112 | ||
98738d70 CS |
113 | #ifdef CONFIG_SECURITY_LSM_DEBUG |
114 | pr_info("LSM: cred blob size = %d\n", blob_sizes.lbs_cred); | |
004c5200 | 115 | pr_info("LSM: file blob size = %d\n", blob_sizes.lbs_file); |
ac8f82a0 CS |
116 | pr_info("LSM: inode blob size = %d\n", blob_sizes.lbs_inode); |
117 | pr_info("LSM: ipc blob size = %d\n", blob_sizes.lbs_ipc); | |
118 | #ifdef CONFIG_KEYS | |
119 | pr_info("LSM: key blob size = %d\n", blob_sizes.lbs_key); | |
120 | #endif /* CONFIG_KEYS */ | |
121 | pr_info("LSM: msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
122 | pr_info("LSM: sock blob size = %d\n", blob_sizes.lbs_sock); | |
123 | pr_info("LSM: superblock blob size = %d\n", blob_sizes.lbs_superblock); | |
edcfdebc | 124 | pr_info("LSM: task blob size = %d\n", blob_sizes.lbs_task); |
ac8f82a0 | 125 | #endif /* CONFIG_SECURITY_LSM_DEBUG */ |
98738d70 | 126 | |
1da177e4 LT |
127 | return 0; |
128 | } | |
129 | ||
076c54c5 AD |
130 | /* Save user chosen LSM */ |
131 | static int __init choose_lsm(char *str) | |
132 | { | |
2106feaf JJ |
133 | strncpy(chosen_lsms, str, SECURITY_CHOSEN_NAMES_MAX); |
134 | pr_info("LSM: command line set '%s' security module(s).\n", | |
135 | chosen_lsms); | |
076c54c5 AD |
136 | return 1; |
137 | } | |
138 | __setup("security=", choose_lsm); | |
139 | ||
15d2143f JJ |
140 | static int __init choose_display_lsm(char *str) |
141 | { | |
142 | strncpy(chosen_display_lsm, str, SECURITY_NAME_MAX); | |
143 | pr_info("LSM: command line set default display lsm %s'\n", | |
144 | chosen_display_lsm); | |
145 | return 1; | |
146 | } | |
147 | __setup("security.display=", choose_display_lsm); | |
148 | ||
3bb857e4 MS |
149 | static bool match_last_lsm(const char *list, const char *lsm) |
150 | { | |
151 | const char *last; | |
152 | ||
153 | if (WARN_ON(!list || !lsm)) | |
154 | return false; | |
155 | last = strrchr(list, ','); | |
156 | if (last) | |
157 | /* Pass the comma, strcmp() will check for '\0' */ | |
158 | last++; | |
159 | else | |
160 | last = list; | |
161 | return !strcmp(last, lsm); | |
162 | } | |
163 | ||
d69dece5 CS |
164 | static int lsm_append(char *new, char **result) |
165 | { | |
166 | char *cp; | |
167 | ||
168 | if (*result == NULL) { | |
169 | *result = kstrdup(new, GFP_KERNEL); | |
170 | } else { | |
3bb857e4 MS |
171 | /* Check if it is the last registered name */ |
172 | if (match_last_lsm(*result, new)) | |
173 | return 0; | |
d69dece5 CS |
174 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
175 | if (cp == NULL) | |
176 | return -ENOMEM; | |
177 | kfree(*result); | |
178 | *result = cp; | |
179 | } | |
180 | return 0; | |
181 | } | |
182 | ||
076c54c5 AD |
183 | /** |
184 | * security_module_enable - Load given security module on boot ? | |
b1d9e6b0 | 185 | * @module: the name of the module |
a3c3cde2 | 186 | * @stacked: indicates that the module wants to be stacked |
076c54c5 AD |
187 | * |
188 | * Each LSM must pass this method before registering its own operations | |
189 | * to avoid security registration races. This method may also be used | |
7cea51be | 190 | * to check if your LSM is currently loaded during kernel initialization. |
076c54c5 | 191 | * |
0e056eb5 MCC |
192 | * Returns: |
193 | * | |
194 | * true if: | |
195 | * | |
196 | * - The passed LSM is the one chosen by user at boot time, | |
197 | * - or the passed LSM is configured as the default and the user did not | |
198 | * choose an alternate LSM at boot time. | |
199 | * | |
076c54c5 AD |
200 | * Otherwise, return false. |
201 | */ | |
2106feaf JJ |
202 | #ifdef CONFIG_SECURITY_STACKING |
203 | static bool __init cmp_lsms(const char *lsm) | |
204 | { | |
205 | const char *str = chosen_lsms; | |
206 | const char *split; | |
207 | int len = strlen(lsm); | |
208 | ||
209 | if (len > SECURITY_NAME_MAX) { | |
210 | pr_info("LSM: security module name '%s' exceeds limit\n", lsm); | |
211 | return false; | |
212 | } | |
213 | for (split = strchr(str, ','); split; split = strchr(str, ',')) { | |
214 | if ((len == split - str) && !strncmp(lsm, str, split - str)) | |
215 | return true; | |
216 | str = split + 1; | |
217 | } | |
218 | if ((len == strlen(str)) && !strncmp(lsm, str, strlen(str))) | |
219 | return true; | |
220 | return false; | |
221 | } | |
222 | #endif | |
223 | ||
a3c3cde2 | 224 | bool __init security_module_enable(const char *lsm, const bool stacked) |
076c54c5 | 225 | { |
a3c3cde2 CS |
226 | #ifdef CONFIG_SECURITY_STACKING |
227 | /* | |
228 | * Module defined on the command line security=XXXX | |
229 | */ | |
15d2143f JJ |
230 | if (strcmp(chosen_lsms, MODULE_STACK)) { |
231 | if (cmp_lsms(lsm)) { | |
232 | /* set to first LSM registered and then override */ | |
233 | if (!*default_display_lsm) | |
234 | strcpy(default_display_lsm, lsm); | |
235 | else if (*chosen_display_lsm && !strcmp(chosen_display_lsm, lsm)) { | |
236 | strcpy(default_display_lsm, lsm); | |
237 | pr_info("LSM: default display lsm '%s'\n", default_display_lsm); | |
238 | } | |
239 | return true; | |
240 | } | |
241 | return false; | |
242 | } | |
a3c3cde2 CS |
243 | /* |
244 | * Module configured as stacked. | |
245 | */ | |
15d2143f JJ |
246 | if (stacked && !*default_display_lsm) |
247 | strcpy(default_display_lsm, lsm); | |
248 | else if (stacked && *chosen_display_lsm && !strcmp(chosen_display_lsm, lsm)) { | |
249 | strcpy(default_display_lsm, lsm); | |
250 | pr_info("LSM: default display lsm '%s'\n", default_display_lsm); | |
251 | } | |
252 | ||
a3c3cde2 CS |
253 | return stacked; |
254 | #else | |
15d2143f JJ |
255 | if (strcmp(lsm, chosen_lsms) == 0) { |
256 | strcpy(default_display_lsm, lsm); | |
a3c3cde2 | 257 | return true; |
15d2143f | 258 | } |
a3c3cde2 CS |
259 | return false; |
260 | #endif | |
076c54c5 AD |
261 | } |
262 | ||
7faa33fe JJ |
263 | /* |
264 | * Keep the order of major modules for mapping secids. | |
265 | */ | |
266 | static int lsm_next_major; | |
267 | ||
d69dece5 CS |
268 | /** |
269 | * security_add_hooks - Add a modules hooks to the hook lists. | |
270 | * @hooks: the hooks to add | |
271 | * @count: the number of hooks to add | |
272 | * @lsm: the name of the security module | |
273 | * | |
274 | * Each LSM has to register its hooks with the infrastructure. | |
275 | */ | |
276 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
277 | char *lsm) | |
278 | { | |
279 | int i; | |
7faa33fe JJ |
280 | int lsm_index = lsm_next_major++; |
281 | ||
282 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
283 | pr_info("LSM: Security module %s gets index %d\n", lsm, lsm_index); | |
284 | #endif | |
d69dece5 CS |
285 | for (i = 0; i < count; i++) { |
286 | hooks[i].lsm = lsm; | |
7faa33fe | 287 | hooks[i].lsm_index = lsm_index; |
d69dece5 CS |
288 | list_add_tail_rcu(&hooks[i].list, hooks[i].head); |
289 | } | |
290 | if (lsm_append(lsm, &lsm_names) < 0) | |
291 | panic("%s - Cannot get early memory.\n", __func__); | |
292 | } | |
293 | ||
8f408ab6 DJ |
294 | int call_lsm_notifier(enum lsm_event event, void *data) |
295 | { | |
296 | return atomic_notifier_call_chain(&lsm_notifier_chain, event, data); | |
297 | } | |
298 | EXPORT_SYMBOL(call_lsm_notifier); | |
299 | ||
300 | int register_lsm_notifier(struct notifier_block *nb) | |
301 | { | |
302 | return atomic_notifier_chain_register(&lsm_notifier_chain, nb); | |
303 | } | |
304 | EXPORT_SYMBOL(register_lsm_notifier); | |
305 | ||
306 | int unregister_lsm_notifier(struct notifier_block *nb) | |
307 | { | |
308 | return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb); | |
309 | } | |
310 | EXPORT_SYMBOL(unregister_lsm_notifier); | |
311 | ||
98738d70 CS |
312 | /** |
313 | * lsm_cred_alloc - allocate a composite cred blob | |
314 | * @cred: the cred that needs a blob | |
315 | * @gfp: allocation type | |
316 | * | |
317 | * Allocate the cred blob for all the modules | |
318 | * | |
319 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
320 | */ | |
321 | int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
322 | { | |
323 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
324 | if (cred->security) | |
325 | pr_info("%s: Inbound cred blob is not NULL.\n", __func__); | |
326 | #endif | |
327 | if (blob_sizes.lbs_cred == 0) | |
328 | return 0; | |
329 | ||
330 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
331 | if (cred->security == NULL) | |
332 | return -ENOMEM; | |
333 | return 0; | |
334 | } | |
335 | ||
336 | /** | |
337 | * lsm_early_cred - during initialization allocate a composite cred blob | |
338 | * @cred: the cred that needs a blob | |
339 | * | |
340 | * Allocate the cred blob for all the modules if it's not already there | |
341 | */ | |
342 | void lsm_early_cred(struct cred *cred) | |
343 | { | |
344 | int rc; | |
345 | ||
346 | if (cred == NULL) | |
347 | panic("%s: NULL cred.\n", __func__); | |
348 | if (cred->security != NULL) | |
349 | return; | |
350 | rc = lsm_cred_alloc(cred, GFP_KERNEL); | |
351 | if (rc) | |
352 | panic("%s: Early cred alloc failed.\n", __func__); | |
353 | } | |
354 | ||
355 | static void __init lsm_set_size(int *need, int *lbs) | |
356 | { | |
357 | int offset; | |
358 | ||
359 | if (*need > 0) { | |
360 | offset = *lbs; | |
361 | *lbs += *need; | |
362 | *need = offset; | |
363 | } | |
364 | } | |
365 | ||
366 | /** | |
367 | * security_add_blobs - Report blob sizes | |
368 | * @needed: the size of blobs needed by the module | |
369 | * | |
370 | * Each LSM has to register its blobs with the infrastructure. | |
371 | * The "needed" data tells the infrastructure how much memory | |
372 | * the module requires for each of its blobs. On return the | |
373 | * structure is filled with the offset that module should use | |
374 | * from the blob pointer. | |
375 | */ | |
376 | void __init security_add_blobs(struct lsm_blob_sizes *needed) | |
377 | { | |
378 | lsm_set_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
004c5200 | 379 | lsm_set_size(&needed->lbs_file, &blob_sizes.lbs_file); |
ac8f82a0 CS |
380 | lsm_set_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
381 | lsm_set_size(&needed->lbs_key, &blob_sizes.lbs_key); | |
382 | lsm_set_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
383 | lsm_set_size(&needed->lbs_sock, &blob_sizes.lbs_sock); | |
384 | lsm_set_size(&needed->lbs_superblock, &blob_sizes.lbs_superblock); | |
edcfdebc | 385 | lsm_set_size(&needed->lbs_task, &blob_sizes.lbs_task); |
ac8f82a0 CS |
386 | /* |
387 | * The inode blob gets an rcu_head in addition to | |
388 | * what the modules might need. | |
389 | */ | |
390 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
391 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
392 | lsm_set_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
004c5200 CS |
393 | } |
394 | ||
395 | /** | |
396 | * lsm_file_alloc - allocate a composite file blob | |
397 | * @file: the file that needs a blob | |
398 | * | |
399 | * Allocate the file blob for all the modules | |
400 | * | |
401 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
402 | */ | |
403 | int lsm_file_alloc(struct file *file) | |
404 | { | |
405 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
406 | if (file->f_security) | |
407 | pr_info("%s: Inbound file blob is not NULL.\n", __func__); | |
408 | #endif | |
409 | if (blob_sizes.lbs_file == 0) | |
410 | return 0; | |
411 | ||
412 | file->f_security = kzalloc(blob_sizes.lbs_file, GFP_KERNEL); | |
413 | if (file->f_security == NULL) | |
414 | return -ENOMEM; | |
415 | return 0; | |
98738d70 CS |
416 | } |
417 | ||
ab5e2f3f JJ |
418 | #ifdef CONFIG_SECURITY_STACKING |
419 | static inline char *lsm_of_task(struct task_struct *task) | |
420 | { | |
421 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
422 | if (task->security == NULL) | |
423 | pr_info("%s: task has no lsm name.\n", __func__); | |
424 | #endif | |
425 | return task->security; | |
426 | } | |
427 | #endif | |
428 | ||
429 | #ifdef CONFIG_SECURITY_STACKING | |
430 | struct lsm_value { | |
431 | char *lsm; | |
432 | char *data; | |
433 | }; | |
434 | ||
435 | /** | |
436 | * lsm_parse_context - break a compound "context" into module data | |
437 | * @cxt: the initial data, which will be modified | |
438 | * @vlist: an array to receive the results | |
439 | * | |
440 | * Returns the number of entries, or -EINVAL if the cxt is unworkable. | |
441 | */ | |
442 | static int lsm_parse_context(char *cxt, struct lsm_value *vlist) | |
443 | { | |
444 | char *lsm; | |
445 | char *data; | |
446 | char *cp; | |
447 | int i; | |
448 | ||
449 | lsm = cxt; | |
450 | for (i = 0; i < LSM_MAX_MAJOR; i++) { | |
451 | data = strstr(lsm, "='"); | |
452 | if (!data) | |
453 | break; | |
454 | *data = '\0'; | |
455 | data += 2; | |
456 | cp = strchr(data, '\''); | |
457 | if (!cp) | |
458 | return -EINVAL; | |
459 | *cp++ = '\0'; | |
460 | vlist[i].lsm = lsm; | |
461 | vlist[i].data = data; | |
462 | if (*cp == '\0') { | |
463 | i++; | |
464 | break; | |
465 | } | |
466 | if (*cp == ',') | |
467 | cp++; | |
468 | else | |
469 | return -EINVAL; | |
470 | lsm = cp; | |
471 | } | |
472 | return i; | |
473 | } | |
474 | #endif /* CONFIG_SECURITY_STACKING */ | |
475 | ||
edcfdebc CS |
476 | /** |
477 | * lsm_task_alloc - allocate a composite task blob | |
478 | * @task: the task that needs a blob | |
479 | * | |
480 | * Allocate the task blob for all the modules | |
481 | * | |
482 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
483 | */ | |
484 | int lsm_task_alloc(struct task_struct *task) | |
485 | { | |
486 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
487 | if (task->security) | |
488 | pr_info("%s: Inbound task blob is not NULL.\n", __func__); | |
489 | #endif | |
490 | if (blob_sizes.lbs_task == 0) | |
491 | return 0; | |
492 | ||
493 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
494 | if (task->security == NULL) | |
495 | return -ENOMEM; | |
f37cb143 JJ |
496 | |
497 | /* inherit current display lsm */ | |
498 | #ifdef CONFIG_SECURITY_STACKING | |
499 | if (current->security) | |
500 | strcpy(task->security, lsm_of_task(current)); | |
15d2143f JJ |
501 | else |
502 | strcpy(task->security, default_display_lsm); | |
f37cb143 | 503 | #endif |
edcfdebc CS |
504 | return 0; |
505 | } | |
506 | ||
ac8f82a0 CS |
507 | /** |
508 | * lsm_inode_alloc - allocate a composite inode blob | |
509 | * @inode: the inode that needs a blob | |
510 | * | |
511 | * Allocate the inode blob for all the modules | |
512 | * | |
513 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
514 | */ | |
515 | int lsm_inode_alloc(struct inode *inode) | |
516 | { | |
517 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
518 | if (inode->i_security) | |
519 | pr_info("%s: Inbound inode blob is not NULL.\n", __func__); | |
520 | #endif | |
521 | if (blob_sizes.lbs_inode == 0) | |
522 | return 0; | |
523 | ||
524 | inode->i_security = kzalloc(blob_sizes.lbs_inode, GFP_KERNEL); | |
525 | if (inode->i_security == NULL) | |
526 | return -ENOMEM; | |
527 | return 0; | |
528 | } | |
529 | ||
530 | /** | |
531 | * lsm_early_inode - during initialization allocate a composite inode blob | |
532 | * @inode: the inode that needs a blob | |
533 | * | |
534 | * Allocate the inode blob for all the modules if it's not already there | |
535 | */ | |
536 | void lsm_early_inode(struct inode *inode) | |
537 | { | |
538 | int rc; | |
539 | ||
540 | if (inode == NULL) | |
541 | panic("%s: NULL inode.\n", __func__); | |
542 | if (inode->i_security != NULL) | |
543 | return; | |
544 | rc = lsm_inode_alloc(inode); | |
545 | if (rc) | |
546 | panic("%s: Early inode alloc failed.\n", __func__); | |
547 | } | |
548 | ||
549 | /** | |
550 | * lsm_ipc_alloc - allocate a composite ipc blob | |
551 | * @kip: the ipc that needs a blob | |
552 | * | |
553 | * Allocate the ipc blob for all the modules | |
554 | * | |
555 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
556 | */ | |
557 | int lsm_ipc_alloc(struct kern_ipc_perm *kip) | |
558 | { | |
559 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
560 | if (kip->security) | |
561 | pr_info("%s: Inbound ipc blob is not NULL.\n", __func__); | |
562 | #endif | |
563 | if (blob_sizes.lbs_ipc == 0) | |
564 | return 0; | |
565 | ||
566 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
567 | if (kip->security == NULL) | |
568 | return -ENOMEM; | |
569 | return 0; | |
570 | } | |
571 | ||
572 | #ifdef CONFIG_KEYS | |
573 | /** | |
574 | * lsm_key_alloc - allocate a composite key blob | |
575 | * @key: the key that needs a blob | |
576 | * | |
577 | * Allocate the key blob for all the modules | |
578 | * | |
579 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
580 | */ | |
581 | int lsm_key_alloc(struct key *key) | |
582 | { | |
583 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
584 | if (key->security) | |
585 | pr_info("%s: Inbound key blob is not NULL.\n", __func__); | |
586 | #endif | |
587 | if (blob_sizes.lbs_key == 0) | |
588 | return 0; | |
589 | ||
590 | key->security = kzalloc(blob_sizes.lbs_key, GFP_KERNEL); | |
591 | if (key->security == NULL) | |
592 | return -ENOMEM; | |
593 | return 0; | |
594 | } | |
595 | #endif /* CONFIG_KEYS */ | |
596 | ||
597 | /** | |
598 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
599 | * @mp: the msg_msg that needs a blob | |
600 | * | |
601 | * Allocate the ipc blob for all the modules | |
602 | * | |
603 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
604 | */ | |
605 | int lsm_msg_msg_alloc(struct msg_msg *mp) | |
606 | { | |
607 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
608 | if (mp->security) | |
609 | pr_info("%s: Inbound msg_msg blob is not NULL.\n", __func__); | |
610 | #endif | |
611 | if (blob_sizes.lbs_msg_msg == 0) | |
612 | return 0; | |
613 | ||
614 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
615 | if (mp->security == NULL) | |
616 | return -ENOMEM; | |
617 | return 0; | |
618 | } | |
619 | ||
620 | /** | |
621 | * lsm_sock_alloc - allocate a composite sock blob | |
622 | * @sock: the sock that needs a blob | |
623 | * @priority: allocation mode | |
624 | * | |
625 | * Allocate the sock blob for all the modules | |
626 | * | |
627 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
628 | */ | |
629 | int lsm_sock_alloc(struct sock *sock, gfp_t priority) | |
630 | { | |
631 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
632 | if (sock->sk_security) | |
633 | pr_info("%s: Inbound sock blob is not NULL.\n", __func__); | |
634 | #endif | |
635 | if (blob_sizes.lbs_sock == 0) | |
636 | return 0; | |
637 | ||
638 | sock->sk_security = kzalloc(blob_sizes.lbs_sock, priority); | |
639 | if (sock->sk_security == NULL) | |
640 | return -ENOMEM; | |
641 | return 0; | |
642 | } | |
643 | ||
644 | /** | |
645 | * lsm_superblock_alloc - allocate a composite superblock blob | |
646 | * @sb: the superblock that needs a blob | |
647 | * | |
648 | * Allocate the superblock blob for all the modules | |
649 | * | |
650 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
651 | */ | |
652 | int lsm_superblock_alloc(struct super_block *sb) | |
653 | { | |
654 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
655 | if (sb->s_security) | |
656 | pr_info("%s: Inbound superblock blob is not NULL.\n", __func__); | |
657 | #endif | |
658 | if (blob_sizes.lbs_superblock == 0) | |
659 | return 0; | |
660 | ||
661 | sb->s_security = kzalloc(blob_sizes.lbs_superblock, GFP_KERNEL); | |
662 | if (sb->s_security == NULL) | |
663 | return -ENOMEM; | |
664 | return 0; | |
665 | } | |
666 | ||
f25fce3e | 667 | /* |
b1d9e6b0 | 668 | * Hook list operation macros. |
1da177e4 | 669 | * |
f25fce3e CS |
670 | * call_void_hook: |
671 | * This is a hook that does not return a value. | |
1da177e4 | 672 | * |
f25fce3e CS |
673 | * call_int_hook: |
674 | * This is a hook that returns a value. | |
1da177e4 | 675 | */ |
1da177e4 | 676 | |
b1d9e6b0 CS |
677 | #define call_void_hook(FUNC, ...) \ |
678 | do { \ | |
679 | struct security_hook_list *P; \ | |
680 | \ | |
681 | list_for_each_entry(P, &security_hook_heads.FUNC, list) \ | |
682 | P->hook.FUNC(__VA_ARGS__); \ | |
683 | } while (0) | |
684 | ||
685 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
686 | int RC = IRC; \ | |
687 | do { \ | |
688 | struct security_hook_list *P; \ | |
689 | \ | |
690 | list_for_each_entry(P, &security_hook_heads.FUNC, list) { \ | |
691 | RC = P->hook.FUNC(__VA_ARGS__); \ | |
692 | if (RC != 0) \ | |
693 | break; \ | |
694 | } \ | |
695 | } while (0); \ | |
696 | RC; \ | |
697 | }) | |
1da177e4 | 698 | |
20510f2f JM |
699 | /* Security operations */ |
700 | ||
79af7307 SS |
701 | int security_binder_set_context_mgr(struct task_struct *mgr) |
702 | { | |
f25fce3e | 703 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 SS |
704 | } |
705 | ||
706 | int security_binder_transaction(struct task_struct *from, | |
707 | struct task_struct *to) | |
708 | { | |
f25fce3e | 709 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 SS |
710 | } |
711 | ||
712 | int security_binder_transfer_binder(struct task_struct *from, | |
713 | struct task_struct *to) | |
714 | { | |
f25fce3e | 715 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 SS |
716 | } |
717 | ||
718 | int security_binder_transfer_file(struct task_struct *from, | |
719 | struct task_struct *to, struct file *file) | |
720 | { | |
f25fce3e | 721 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 SS |
722 | } |
723 | ||
9e48858f | 724 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 725 | { |
f25fce3e | 726 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
727 | } |
728 | ||
729 | int security_ptrace_traceme(struct task_struct *parent) | |
730 | { | |
f25fce3e | 731 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
732 | } |
733 | ||
734 | int security_capget(struct task_struct *target, | |
735 | kernel_cap_t *effective, | |
736 | kernel_cap_t *inheritable, | |
737 | kernel_cap_t *permitted) | |
738 | { | |
f25fce3e CS |
739 | return call_int_hook(capget, 0, target, |
740 | effective, inheritable, permitted); | |
20510f2f JM |
741 | } |
742 | ||
d84f4f99 DH |
743 | int security_capset(struct cred *new, const struct cred *old, |
744 | const kernel_cap_t *effective, | |
745 | const kernel_cap_t *inheritable, | |
746 | const kernel_cap_t *permitted) | |
20510f2f | 747 | { |
f25fce3e CS |
748 | return call_int_hook(capset, 0, new, old, |
749 | effective, inheritable, permitted); | |
20510f2f JM |
750 | } |
751 | ||
b7e724d3 | 752 | int security_capable(const struct cred *cred, struct user_namespace *ns, |
3486740a | 753 | int cap) |
20510f2f | 754 | { |
f25fce3e | 755 | return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT); |
06112163 EP |
756 | } |
757 | ||
c7eba4a9 EP |
758 | int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, |
759 | int cap) | |
06112163 | 760 | { |
f25fce3e | 761 | return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT); |
20510f2f JM |
762 | } |
763 | ||
20510f2f JM |
764 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
765 | { | |
f25fce3e | 766 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
767 | } |
768 | ||
769 | int security_quota_on(struct dentry *dentry) | |
770 | { | |
f25fce3e | 771 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
772 | } |
773 | ||
12b3052c | 774 | int security_syslog(int type) |
20510f2f | 775 | { |
f25fce3e | 776 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
777 | } |
778 | ||
457db29b | 779 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 780 | { |
f25fce3e | 781 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
782 | } |
783 | ||
20510f2f JM |
784 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
785 | { | |
b1d9e6b0 CS |
786 | struct security_hook_list *hp; |
787 | int cap_sys_admin = 1; | |
788 | int rc; | |
789 | ||
790 | /* | |
791 | * The module will respond with a positive value if | |
792 | * it thinks the __vm_enough_memory() call should be | |
793 | * made with the cap_sys_admin set. If all of the modules | |
794 | * agree that it should be set it will. If any module | |
795 | * thinks it should not be set it won't. | |
796 | */ | |
797 | list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { | |
798 | rc = hp->hook.vm_enough_memory(mm, pages); | |
799 | if (rc <= 0) { | |
800 | cap_sys_admin = 0; | |
801 | break; | |
802 | } | |
803 | } | |
804 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
805 | } |
806 | ||
a6f76f23 | 807 | int security_bprm_set_creds(struct linux_binprm *bprm) |
20510f2f | 808 | { |
f25fce3e | 809 | return call_int_hook(bprm_set_creds, 0, bprm); |
20510f2f JM |
810 | } |
811 | ||
a6f76f23 | 812 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 813 | { |
6c21a7fb MZ |
814 | int ret; |
815 | ||
f25fce3e | 816 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
817 | if (ret) |
818 | return ret; | |
819 | return ima_bprm_check(bprm); | |
20510f2f JM |
820 | } |
821 | ||
a6f76f23 | 822 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 823 | { |
f25fce3e | 824 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
825 | } |
826 | ||
a6f76f23 | 827 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 828 | { |
f25fce3e | 829 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
830 | } |
831 | ||
832 | int security_bprm_secureexec(struct linux_binprm *bprm) | |
833 | { | |
f25fce3e | 834 | return call_int_hook(bprm_secureexec, 0, bprm); |
20510f2f JM |
835 | } |
836 | ||
837 | int security_sb_alloc(struct super_block *sb) | |
838 | { | |
ac8f82a0 CS |
839 | int rc = lsm_superblock_alloc(sb); |
840 | ||
841 | if (rc) | |
842 | return rc; | |
f25fce3e | 843 | return call_int_hook(sb_alloc_security, 0, sb); |
20510f2f JM |
844 | } |
845 | ||
846 | void security_sb_free(struct super_block *sb) | |
847 | { | |
f25fce3e | 848 | call_void_hook(sb_free_security, sb); |
ac8f82a0 CS |
849 | kfree(sb->s_security); |
850 | sb->s_security = NULL; | |
20510f2f JM |
851 | } |
852 | ||
e0007529 | 853 | int security_sb_copy_data(char *orig, char *copy) |
20510f2f | 854 | { |
f25fce3e | 855 | return call_int_hook(sb_copy_data, 0, orig, copy); |
20510f2f | 856 | } |
e0007529 | 857 | EXPORT_SYMBOL(security_sb_copy_data); |
20510f2f | 858 | |
ff36fe2c EP |
859 | int security_sb_remount(struct super_block *sb, void *data) |
860 | { | |
f25fce3e | 861 | return call_int_hook(sb_remount, 0, sb, data); |
ff36fe2c EP |
862 | } |
863 | ||
12204e24 | 864 | int security_sb_kern_mount(struct super_block *sb, int flags, void *data) |
20510f2f | 865 | { |
f25fce3e | 866 | return call_int_hook(sb_kern_mount, 0, sb, flags, data); |
20510f2f JM |
867 | } |
868 | ||
2069f457 EP |
869 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
870 | { | |
f25fce3e | 871 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
872 | } |
873 | ||
20510f2f JM |
874 | int security_sb_statfs(struct dentry *dentry) |
875 | { | |
f25fce3e | 876 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
877 | } |
878 | ||
8a04c43b | 879 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 880 | const char *type, unsigned long flags, void *data) |
20510f2f | 881 | { |
f25fce3e | 882 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
883 | } |
884 | ||
20510f2f JM |
885 | int security_sb_umount(struct vfsmount *mnt, int flags) |
886 | { | |
f25fce3e | 887 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
888 | } |
889 | ||
3b73b68c | 890 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 891 | { |
f25fce3e | 892 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
893 | } |
894 | ||
c9180a57 | 895 | int security_sb_set_mnt_opts(struct super_block *sb, |
649f6e77 DQ |
896 | struct security_mnt_opts *opts, |
897 | unsigned long kern_flags, | |
898 | unsigned long *set_kern_flags) | |
c9180a57 | 899 | { |
b1d9e6b0 CS |
900 | return call_int_hook(sb_set_mnt_opts, |
901 | opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb, | |
902 | opts, kern_flags, set_kern_flags); | |
c9180a57 | 903 | } |
e0007529 | 904 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 905 | |
094f7b69 | 906 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
907 | struct super_block *newsb, |
908 | unsigned long kern_flags, | |
909 | unsigned long *set_kern_flags) | |
c9180a57 | 910 | { |
0b4d3452 SM |
911 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
912 | kern_flags, set_kern_flags); | |
c9180a57 | 913 | } |
e0007529 EP |
914 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
915 | ||
916 | int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) | |
917 | { | |
f25fce3e | 918 | return call_int_hook(sb_parse_opts_str, 0, options, opts); |
e0007529 EP |
919 | } |
920 | EXPORT_SYMBOL(security_sb_parse_opts_str); | |
c9180a57 | 921 | |
20510f2f JM |
922 | int security_inode_alloc(struct inode *inode) |
923 | { | |
ac8f82a0 CS |
924 | int rc = lsm_inode_alloc(inode); |
925 | ||
926 | if (rc) | |
927 | return rc; | |
f25fce3e | 928 | return call_int_hook(inode_alloc_security, 0, inode); |
20510f2f JM |
929 | } |
930 | ||
ac8f82a0 CS |
931 | static void inode_free_by_rcu(struct rcu_head *head) |
932 | { | |
933 | /* | |
934 | * The rcu head is at the start of the inode blob | |
935 | */ | |
936 | kfree(head); | |
937 | } | |
938 | ||
20510f2f JM |
939 | void security_inode_free(struct inode *inode) |
940 | { | |
f381c272 | 941 | integrity_inode_free(inode); |
f25fce3e | 942 | call_void_hook(inode_free_security, inode); |
ac8f82a0 CS |
943 | /* |
944 | * The inode may still be referenced in a path walk and | |
945 | * a call to security_inode_permission() can be made | |
946 | * after inode_free_security() is called. Ideally, the VFS | |
947 | * wouldn't do this, but fixing that is a much harder | |
948 | * job. For now, simply free the i_security via RCU, and | |
949 | * leave the current inode->i_security pointer intact. | |
950 | * The inode will be freed after the RCU grace period too. | |
951 | */ | |
952 | if (inode->i_security != NULL) { | |
953 | call_rcu((struct rcu_head *)inode->i_security, | |
954 | inode_free_by_rcu); | |
955 | inode->i_security = NULL; | |
956 | } | |
20510f2f JM |
957 | } |
958 | ||
d47be3df | 959 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 960 | const struct qstr *name, void **ctx, |
d47be3df DQ |
961 | u32 *ctxlen) |
962 | { | |
b1d9e6b0 CS |
963 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
964 | name, ctx, ctxlen); | |
d47be3df DQ |
965 | } |
966 | EXPORT_SYMBOL(security_dentry_init_security); | |
967 | ||
2602625b VG |
968 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
969 | struct qstr *name, | |
970 | const struct cred *old, struct cred *new) | |
971 | { | |
972 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
973 | name, old, new); | |
974 | } | |
975 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
976 | ||
20510f2f | 977 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
978 | const struct qstr *qstr, |
979 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 980 | { |
823eb1cc MZ |
981 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
982 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
983 | int ret; |
984 | ||
20510f2f | 985 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 986 | return 0; |
9d8f13ba | 987 | |
9d8f13ba | 988 | if (!initxattrs) |
e308fd3b JB |
989 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
990 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 991 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 992 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 993 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
994 | &lsm_xattr->name, |
995 | &lsm_xattr->value, | |
996 | &lsm_xattr->value_len); | |
997 | if (ret) | |
998 | goto out; | |
823eb1cc MZ |
999 | |
1000 | evm_xattr = lsm_xattr + 1; | |
1001 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1002 | if (ret) | |
1003 | goto out; | |
9d8f13ba MZ |
1004 | ret = initxattrs(inode, new_xattrs, fs_data); |
1005 | out: | |
9548906b | 1006 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1007 | kfree(xattr->value); |
9d8f13ba MZ |
1008 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1009 | } | |
1010 | EXPORT_SYMBOL(security_inode_init_security); | |
1011 | ||
1012 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, | |
9548906b | 1013 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1014 | void **value, size_t *len) |
20510f2f JM |
1015 | { |
1016 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1017 | return -EOPNOTSUPP; |
e308fd3b JB |
1018 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1019 | qstr, name, value, len); | |
20510f2f | 1020 | } |
9d8f13ba | 1021 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1022 | |
be6d3e56 | 1023 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1024 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1025 | unsigned int dev) |
1026 | { | |
c6f493d6 | 1027 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1028 | return 0; |
f25fce3e | 1029 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1030 | } |
1031 | EXPORT_SYMBOL(security_path_mknod); | |
1032 | ||
d3607752 | 1033 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1034 | { |
c6f493d6 | 1035 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1036 | return 0; |
f25fce3e | 1037 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1038 | } |
82140443 | 1039 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1040 | |
989f74e0 | 1041 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1042 | { |
c6f493d6 | 1043 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1044 | return 0; |
f25fce3e | 1045 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 | 1046 | } |
b6450630 | 1047 | EXPORT_SYMBOL_GPL(security_path_rmdir); |
be6d3e56 | 1048 | |
989f74e0 | 1049 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1050 | { |
c6f493d6 | 1051 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1052 | return 0; |
f25fce3e | 1053 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1054 | } |
82140443 | 1055 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1056 | |
d3607752 | 1057 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1058 | const char *old_name) |
1059 | { | |
c6f493d6 | 1060 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1061 | return 0; |
f25fce3e | 1062 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 | 1063 | } |
b6450630 | 1064 | EXPORT_SYMBOL_GPL(security_path_symlink); |
be6d3e56 | 1065 | |
3ccee46a | 1066 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1067 | struct dentry *new_dentry) |
1068 | { | |
c6f493d6 | 1069 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1070 | return 0; |
f25fce3e | 1071 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 | 1072 | } |
b6450630 | 1073 | EXPORT_SYMBOL_GPL(security_path_link); |
be6d3e56 | 1074 | |
3ccee46a AV |
1075 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1076 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1077 | unsigned int flags) |
be6d3e56 | 1078 | { |
c6f493d6 DH |
1079 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1080 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1081 | return 0; |
da1ce067 MS |
1082 | |
1083 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1084 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1085 | old_dir, old_dentry); | |
da1ce067 MS |
1086 | if (err) |
1087 | return err; | |
1088 | } | |
1089 | ||
f25fce3e CS |
1090 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1091 | new_dentry); | |
be6d3e56 | 1092 | } |
82140443 | 1093 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1094 | |
81f4c506 | 1095 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1096 | { |
c6f493d6 | 1097 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1098 | return 0; |
f25fce3e | 1099 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1100 | } |
b6450630 | 1101 | EXPORT_SYMBOL_GPL(security_path_truncate); |
89eda068 | 1102 | |
be01f9f2 | 1103 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1104 | { |
c6f493d6 | 1105 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1106 | return 0; |
f25fce3e | 1107 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 | 1108 | } |
b6450630 | 1109 | EXPORT_SYMBOL_GPL(security_path_chmod); |
89eda068 | 1110 | |
7fd25dac | 1111 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1112 | { |
c6f493d6 | 1113 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1114 | return 0; |
f25fce3e | 1115 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1116 | } |
b6450630 | 1117 | EXPORT_SYMBOL_GPL(security_path_chown); |
8b8efb44 | 1118 | |
77b286c0 | 1119 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1120 | { |
f25fce3e | 1121 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1122 | } |
be6d3e56 KT |
1123 | #endif |
1124 | ||
4acdaf27 | 1125 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1126 | { |
1127 | if (unlikely(IS_PRIVATE(dir))) | |
1128 | return 0; | |
f25fce3e | 1129 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1130 | } |
800a9647 | 1131 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1132 | |
1133 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1134 | struct dentry *new_dentry) | |
1135 | { | |
c6f493d6 | 1136 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1137 | return 0; |
f25fce3e | 1138 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1139 | } |
1140 | ||
1141 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1142 | { | |
c6f493d6 | 1143 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1144 | return 0; |
f25fce3e | 1145 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1146 | } |
1147 | ||
1148 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1149 | const char *old_name) | |
1150 | { | |
1151 | if (unlikely(IS_PRIVATE(dir))) | |
1152 | return 0; | |
f25fce3e | 1153 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1154 | } |
1155 | ||
18bb1db3 | 1156 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1157 | { |
1158 | if (unlikely(IS_PRIVATE(dir))) | |
1159 | return 0; | |
f25fce3e | 1160 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1161 | } |
800a9647 | 1162 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1163 | |
1164 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1165 | { | |
c6f493d6 | 1166 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1167 | return 0; |
f25fce3e | 1168 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1169 | } |
1170 | ||
1a67aafb | 1171 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1172 | { |
1173 | if (unlikely(IS_PRIVATE(dir))) | |
1174 | return 0; | |
f25fce3e | 1175 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1176 | } |
1177 | ||
1178 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1179 | struct inode *new_dir, struct dentry *new_dentry, |
1180 | unsigned int flags) | |
20510f2f | 1181 | { |
c6f493d6 DH |
1182 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1183 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1184 | return 0; |
da1ce067 MS |
1185 | |
1186 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1187 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1188 | old_dir, old_dentry); |
1189 | if (err) | |
1190 | return err; | |
1191 | } | |
1192 | ||
f25fce3e | 1193 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1194 | new_dir, new_dentry); |
1195 | } | |
1196 | ||
1197 | int security_inode_readlink(struct dentry *dentry) | |
1198 | { | |
c6f493d6 | 1199 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1200 | return 0; |
f25fce3e | 1201 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f | 1202 | } |
b6450630 | 1203 | EXPORT_SYMBOL_GPL(security_inode_readlink); |
20510f2f | 1204 | |
bda0be7a N |
1205 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1206 | bool rcu) | |
20510f2f | 1207 | { |
bda0be7a | 1208 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1209 | return 0; |
e22619a2 | 1210 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1211 | } |
1212 | ||
b77b0646 | 1213 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1214 | { |
1215 | if (unlikely(IS_PRIVATE(inode))) | |
1216 | return 0; | |
f25fce3e | 1217 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f | 1218 | } |
b6450630 | 1219 | EXPORT_SYMBOL_GPL(security_inode_permission); |
20510f2f JM |
1220 | |
1221 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1222 | { | |
817b54aa MZ |
1223 | int ret; |
1224 | ||
c6f493d6 | 1225 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1226 | return 0; |
f25fce3e | 1227 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1228 | if (ret) |
1229 | return ret; | |
1230 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1231 | } |
b1da47e2 | 1232 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1233 | |
3f7036a0 | 1234 | int security_inode_getattr(const struct path *path) |
20510f2f | 1235 | { |
c6f493d6 | 1236 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1237 | return 0; |
f25fce3e | 1238 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1239 | } |
1240 | ||
8f0cfa52 DH |
1241 | int security_inode_setxattr(struct dentry *dentry, const char *name, |
1242 | const void *value, size_t size, int flags) | |
20510f2f | 1243 | { |
3e1be52d MZ |
1244 | int ret; |
1245 | ||
c6f493d6 | 1246 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1247 | return 0; |
b1d9e6b0 CS |
1248 | /* |
1249 | * SELinux and Smack integrate the cap call, | |
1250 | * so assume that all LSMs supplying this call do so. | |
1251 | */ | |
1252 | ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, | |
f25fce3e | 1253 | flags); |
b1d9e6b0 CS |
1254 | |
1255 | if (ret == 1) | |
1256 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1257 | if (ret) |
1258 | return ret; | |
1259 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1260 | if (ret) |
1261 | return ret; | |
1262 | return evm_inode_setxattr(dentry, name, value, size); | |
20510f2f JM |
1263 | } |
1264 | ||
8f0cfa52 DH |
1265 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1266 | const void *value, size_t size, int flags) | |
20510f2f | 1267 | { |
c6f493d6 | 1268 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1269 | return; |
f25fce3e | 1270 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1271 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1272 | } |
1273 | ||
8f0cfa52 | 1274 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1275 | { |
c6f493d6 | 1276 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1277 | return 0; |
f25fce3e | 1278 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1279 | } |
1280 | ||
1281 | int security_inode_listxattr(struct dentry *dentry) | |
1282 | { | |
c6f493d6 | 1283 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1284 | return 0; |
f25fce3e | 1285 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1286 | } |
1287 | ||
8f0cfa52 | 1288 | int security_inode_removexattr(struct dentry *dentry, const char *name) |
20510f2f | 1289 | { |
3e1be52d MZ |
1290 | int ret; |
1291 | ||
c6f493d6 | 1292 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1293 | return 0; |
b1d9e6b0 CS |
1294 | /* |
1295 | * SELinux and Smack integrate the cap call, | |
1296 | * so assume that all LSMs supplying this call do so. | |
1297 | */ | |
1298 | ret = call_int_hook(inode_removexattr, 1, dentry, name); | |
1299 | if (ret == 1) | |
1300 | ret = cap_inode_removexattr(dentry, name); | |
42c63330 MZ |
1301 | if (ret) |
1302 | return ret; | |
1303 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1304 | if (ret) |
1305 | return ret; | |
1306 | return evm_inode_removexattr(dentry, name); | |
20510f2f JM |
1307 | } |
1308 | ||
b5376771 SH |
1309 | int security_inode_need_killpriv(struct dentry *dentry) |
1310 | { | |
f25fce3e | 1311 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1312 | } |
1313 | ||
1314 | int security_inode_killpriv(struct dentry *dentry) | |
1315 | { | |
f25fce3e | 1316 | return call_int_hook(inode_killpriv, 0, dentry); |
b5376771 SH |
1317 | } |
1318 | ||
ea861dfd | 1319 | int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) |
20510f2f | 1320 | { |
2885c1e3 CS |
1321 | struct security_hook_list *hp; |
1322 | int rc; | |
1323 | ||
20510f2f | 1324 | if (unlikely(IS_PRIVATE(inode))) |
8d952504 | 1325 | return -EOPNOTSUPP; |
2885c1e3 CS |
1326 | /* |
1327 | * Only one module will provide an attribute with a given name. | |
1328 | */ | |
1329 | list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { | |
1330 | rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); | |
1331 | if (rc != -EOPNOTSUPP) | |
1332 | return rc; | |
1333 | } | |
1334 | return -EOPNOTSUPP; | |
20510f2f JM |
1335 | } |
1336 | ||
1337 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1338 | { | |
2885c1e3 CS |
1339 | struct security_hook_list *hp; |
1340 | int rc; | |
1341 | ||
20510f2f | 1342 | if (unlikely(IS_PRIVATE(inode))) |
8d952504 | 1343 | return -EOPNOTSUPP; |
2885c1e3 CS |
1344 | /* |
1345 | * Only one module will provide an attribute with a given name. | |
1346 | */ | |
1347 | list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { | |
1348 | rc = hp->hook.inode_setsecurity(inode, name, value, size, | |
1349 | flags); | |
1350 | if (rc != -EOPNOTSUPP) | |
1351 | return rc; | |
1352 | } | |
1353 | return -EOPNOTSUPP; | |
20510f2f JM |
1354 | } |
1355 | ||
1356 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1357 | { | |
1358 | if (unlikely(IS_PRIVATE(inode))) | |
1359 | return 0; | |
f25fce3e | 1360 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1361 | } |
c9bccef6 | 1362 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1363 | |
d6335d77 | 1364 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1365 | { |
f25fce3e | 1366 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1367 | } |
1368 | ||
d8ad8b49 VG |
1369 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1370 | { | |
1371 | return call_int_hook(inode_copy_up, 0, src, new); | |
1372 | } | |
1373 | EXPORT_SYMBOL(security_inode_copy_up); | |
1374 | ||
121ab822 VG |
1375 | int security_inode_copy_up_xattr(const char *name) |
1376 | { | |
1377 | return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name); | |
1378 | } | |
1379 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1380 | ||
20510f2f JM |
1381 | int security_file_permission(struct file *file, int mask) |
1382 | { | |
c4ec54b4 EP |
1383 | int ret; |
1384 | ||
f25fce3e | 1385 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1386 | if (ret) |
1387 | return ret; | |
1388 | ||
1389 | return fsnotify_perm(file, mask); | |
20510f2f | 1390 | } |
b6450630 | 1391 | EXPORT_SYMBOL_GPL(security_file_permission); |
20510f2f JM |
1392 | |
1393 | int security_file_alloc(struct file *file) | |
1394 | { | |
004c5200 CS |
1395 | int rc = lsm_file_alloc(file); |
1396 | ||
1397 | if (rc) | |
1398 | return rc; | |
f25fce3e | 1399 | return call_int_hook(file_alloc_security, 0, file); |
20510f2f JM |
1400 | } |
1401 | ||
1402 | void security_file_free(struct file *file) | |
1403 | { | |
f25fce3e | 1404 | call_void_hook(file_free_security, file); |
004c5200 CS |
1405 | |
1406 | kfree(file->f_security); | |
1407 | file->f_security = NULL; | |
20510f2f JM |
1408 | } |
1409 | ||
1410 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1411 | { | |
f25fce3e | 1412 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f JM |
1413 | } |
1414 | ||
98de59bf | 1415 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1416 | { |
8b3ec681 | 1417 | /* |
98de59bf AV |
1418 | * Does we have PROT_READ and does the application expect |
1419 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1420 | */ |
98de59bf AV |
1421 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1422 | return prot; | |
8b3ec681 | 1423 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1424 | return prot; |
1425 | /* | |
1426 | * if that's an anonymous mapping, let it. | |
1427 | */ | |
1428 | if (!file) | |
1429 | return prot | PROT_EXEC; | |
1430 | /* | |
1431 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1432 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1433 | */ |
90f8572b | 1434 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1435 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1436 | if (file->f_op->mmap_capabilities) { |
1437 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1438 | if (!(caps & NOMMU_MAP_EXEC)) | |
1439 | return prot; | |
1440 | } | |
8b3ec681 | 1441 | #endif |
98de59bf | 1442 | return prot | PROT_EXEC; |
8b3ec681 | 1443 | } |
98de59bf AV |
1444 | /* anything on noexec mount won't get PROT_EXEC */ |
1445 | return prot; | |
1446 | } | |
1447 | ||
1448 | int security_mmap_file(struct file *file, unsigned long prot, | |
1449 | unsigned long flags) | |
1450 | { | |
1451 | int ret; | |
f25fce3e | 1452 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1453 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1454 | if (ret) |
1455 | return ret; | |
1456 | return ima_file_mmap(file, prot); | |
20510f2f | 1457 | } |
b6450630 | 1458 | EXPORT_SYMBOL_GPL(security_mmap_file); |
20510f2f | 1459 | |
e5467859 AV |
1460 | int security_mmap_addr(unsigned long addr) |
1461 | { | |
f25fce3e | 1462 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1463 | } |
1464 | ||
20510f2f JM |
1465 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1466 | unsigned long prot) | |
1467 | { | |
f25fce3e | 1468 | return call_int_hook(file_mprotect, 0, vma, reqprot, prot); |
20510f2f JM |
1469 | } |
1470 | ||
1471 | int security_file_lock(struct file *file, unsigned int cmd) | |
1472 | { | |
f25fce3e | 1473 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1474 | } |
1475 | ||
1476 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1477 | { | |
f25fce3e | 1478 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1479 | } |
1480 | ||
e0b93edd | 1481 | void security_file_set_fowner(struct file *file) |
20510f2f | 1482 | { |
f25fce3e | 1483 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1484 | } |
1485 | ||
1486 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1487 | struct fown_struct *fown, int sig) | |
1488 | { | |
f25fce3e | 1489 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1490 | } |
1491 | ||
1492 | int security_file_receive(struct file *file) | |
1493 | { | |
f25fce3e | 1494 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1495 | } |
1496 | ||
83d49856 | 1497 | int security_file_open(struct file *file, const struct cred *cred) |
20510f2f | 1498 | { |
c4ec54b4 EP |
1499 | int ret; |
1500 | ||
f25fce3e | 1501 | ret = call_int_hook(file_open, 0, file, cred); |
c4ec54b4 EP |
1502 | if (ret) |
1503 | return ret; | |
1504 | ||
1505 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1506 | } |
1507 | ||
1508 | int security_task_create(unsigned long clone_flags) | |
1509 | { | |
f25fce3e | 1510 | return call_int_hook(task_create, 0, clone_flags); |
20510f2f JM |
1511 | } |
1512 | ||
e4e55b47 TH |
1513 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1514 | { | |
44559d36 CS |
1515 | int rc = lsm_task_alloc(task); |
1516 | ||
1517 | if (rc) | |
1518 | return rc; | |
e4e55b47 TH |
1519 | return call_int_hook(task_alloc, 0, task, clone_flags); |
1520 | } | |
1521 | ||
1a2a4d06 KC |
1522 | void security_task_free(struct task_struct *task) |
1523 | { | |
f25fce3e | 1524 | call_void_hook(task_free, task); |
edcfdebc CS |
1525 | |
1526 | kfree(task->security); | |
1527 | task->security = NULL; | |
1a2a4d06 KC |
1528 | } |
1529 | ||
ee18d64c DH |
1530 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1531 | { | |
98738d70 CS |
1532 | int rc = lsm_cred_alloc(cred, gfp); |
1533 | ||
1534 | if (rc) | |
1535 | return rc; | |
1536 | ||
f25fce3e | 1537 | return call_int_hook(cred_alloc_blank, 0, cred, gfp); |
ee18d64c DH |
1538 | } |
1539 | ||
d84f4f99 | 1540 | void security_cred_free(struct cred *cred) |
20510f2f | 1541 | { |
f25fce3e | 1542 | call_void_hook(cred_free, cred); |
98738d70 CS |
1543 | |
1544 | kfree(cred->security); | |
1545 | cred->security = NULL; | |
20510f2f JM |
1546 | } |
1547 | ||
d84f4f99 | 1548 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1549 | { |
98738d70 CS |
1550 | int rc = lsm_cred_alloc(new, gfp); |
1551 | ||
1552 | if (rc) | |
1553 | return rc; | |
1554 | ||
f25fce3e | 1555 | return call_int_hook(cred_prepare, 0, new, old, gfp); |
d84f4f99 DH |
1556 | } |
1557 | ||
ee18d64c DH |
1558 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1559 | { | |
f25fce3e | 1560 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1561 | } |
1562 | ||
3a3b7ce9 DH |
1563 | int security_kernel_act_as(struct cred *new, u32 secid) |
1564 | { | |
f25fce3e | 1565 | return call_int_hook(kernel_act_as, 0, new, secid); |
3a3b7ce9 DH |
1566 | } |
1567 | ||
1568 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1569 | { | |
f25fce3e | 1570 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1571 | } |
1572 | ||
dd8dbf2e | 1573 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1574 | { |
f25fce3e | 1575 | return call_int_hook(kernel_module_request, 0, kmod_name); |
9188499c EP |
1576 | } |
1577 | ||
39eeb4fb MZ |
1578 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id) |
1579 | { | |
1580 | int ret; | |
1581 | ||
1582 | ret = call_int_hook(kernel_read_file, 0, file, id); | |
1583 | if (ret) | |
1584 | return ret; | |
1585 | return ima_read_file(file, id); | |
1586 | } | |
1587 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1588 | ||
bc8ca5b9 MZ |
1589 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1590 | enum kernel_read_file_id id) | |
b44a7dfc | 1591 | { |
cf222217 MZ |
1592 | int ret; |
1593 | ||
1594 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1595 | if (ret) | |
1596 | return ret; | |
1597 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1598 | } |
1599 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1600 | ||
d84f4f99 DH |
1601 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1602 | int flags) | |
20510f2f | 1603 | { |
f25fce3e | 1604 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1605 | } |
1606 | ||
20510f2f JM |
1607 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1608 | { | |
f25fce3e | 1609 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1610 | } |
1611 | ||
1612 | int security_task_getpgid(struct task_struct *p) | |
1613 | { | |
f25fce3e | 1614 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1615 | } |
1616 | ||
1617 | int security_task_getsid(struct task_struct *p) | |
1618 | { | |
f25fce3e | 1619 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1620 | } |
1621 | ||
1622 | void security_task_getsecid(struct task_struct *p, u32 *secid) | |
1623 | { | |
b1d9e6b0 | 1624 | *secid = 0; |
f25fce3e | 1625 | call_void_hook(task_getsecid, p, secid); |
20510f2f JM |
1626 | } |
1627 | EXPORT_SYMBOL(security_task_getsecid); | |
1628 | ||
20510f2f JM |
1629 | int security_task_setnice(struct task_struct *p, int nice) |
1630 | { | |
f25fce3e | 1631 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1632 | } |
1633 | ||
1634 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1635 | { | |
f25fce3e | 1636 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1637 | } |
1638 | ||
1639 | int security_task_getioprio(struct task_struct *p) | |
1640 | { | |
f25fce3e | 1641 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1642 | } |
1643 | ||
791ec491 SS |
1644 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1645 | unsigned int flags) | |
1646 | { | |
1647 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1648 | } | |
1649 | ||
8fd00b4d JS |
1650 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1651 | struct rlimit *new_rlim) | |
20510f2f | 1652 | { |
f25fce3e | 1653 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1654 | } |
1655 | ||
b0ae1981 | 1656 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1657 | { |
f25fce3e | 1658 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1659 | } |
1660 | ||
1661 | int security_task_getscheduler(struct task_struct *p) | |
1662 | { | |
f25fce3e | 1663 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1664 | } |
1665 | ||
1666 | int security_task_movememory(struct task_struct *p) | |
1667 | { | |
f25fce3e | 1668 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1669 | } |
1670 | ||
1671 | int security_task_kill(struct task_struct *p, struct siginfo *info, | |
1672 | int sig, u32 secid) | |
1673 | { | |
f25fce3e | 1674 | return call_int_hook(task_kill, 0, p, info, sig, secid); |
20510f2f JM |
1675 | } |
1676 | ||
ab5e2f3f JJ |
1677 | #ifdef CONFIG_SECURITY_STACKING |
1678 | static char *nolsm = "-default"; | |
1679 | #define NOLSMLEN 9 | |
1680 | ||
281260ac JJ |
1681 | static bool is_registered_lsm(const char *str, size_t size) |
1682 | { | |
1683 | struct security_hook_list *hp; | |
1684 | ||
1685 | list_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
1686 | if (size == strlen(hp->lsm) && !strncmp(str, hp->lsm, size)) | |
1687 | return true; | |
1688 | } | |
1689 | ||
1690 | return false; | |
1691 | } | |
1692 | ||
1693 | static bool set_lsm_of_current(const char *str, size_t size) | |
1694 | { | |
1695 | char *lsm = lsm_of_task(current); | |
1696 | ||
1697 | if (is_registered_lsm(str, size)) { | |
1698 | strncpy(lsm, str, size); | |
1699 | lsm[size] = '\0'; | |
1700 | } else if (size == NOLSMLEN && !strncmp(str, nolsm, size)) { | |
1701 | lsm[0] = '\0'; | |
1702 | } else { | |
1703 | return false; | |
1704 | } | |
1705 | return true; | |
1706 | } | |
1707 | ||
ab5e2f3f JJ |
1708 | static int lsm_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
1709 | unsigned long arg4, unsigned long arg5) | |
1710 | { | |
1711 | char *lsm = lsm_of_task(current); | |
1712 | char buffer[SECURITY_NAME_MAX + 1]; | |
1713 | __user char *optval = (__user char *)arg2; | |
1714 | __user int *optlen = (__user int *)arg3; | |
1715 | int dlen; | |
1716 | int len; | |
1717 | ||
1718 | switch (option) { | |
1719 | case PR_GET_DISPLAY_LSM: | |
1720 | len = arg4; | |
1721 | if (lsm[0] == '\0') { | |
1722 | lsm = nolsm; | |
1723 | dlen = NOLSMLEN; | |
1724 | } else | |
1725 | dlen = strlen(lsm) + 1; | |
1726 | if (dlen > len) | |
1727 | return -ERANGE; | |
1728 | if (copy_to_user(optval, lsm, dlen)) | |
1729 | return -EFAULT; | |
1730 | if (put_user(dlen, optlen)) | |
1731 | return -EFAULT; | |
1732 | break; | |
1733 | case PR_SET_DISPLAY_LSM: | |
1734 | len = arg3; | |
1735 | if (len > SECURITY_NAME_MAX) | |
1736 | return -EINVAL; | |
1737 | if (copy_from_user(buffer, optval, len)) | |
1738 | return -EFAULT; | |
1739 | buffer[len] = '\0'; | |
4ea81591 | 1740 | /* verify the requested LSM is registered */ |
281260ac | 1741 | if (!set_lsm_of_current(buffer, len)) |
4ea81591 | 1742 | return -ENOENT; |
ab5e2f3f JJ |
1743 | break; |
1744 | default: | |
1745 | return -ENOSYS; | |
1746 | } | |
1747 | return 0; | |
1748 | } | |
1749 | #endif | |
1750 | ||
20510f2f | 1751 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1752 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1753 | { |
b1d9e6b0 CS |
1754 | int thisrc; |
1755 | int rc = -ENOSYS; | |
1756 | struct security_hook_list *hp; | |
1757 | ||
ab5e2f3f JJ |
1758 | #ifdef CONFIG_SECURITY_STACKING |
1759 | rc = lsm_task_prctl(option, arg2, arg3, arg4, arg5); | |
1760 | if (rc != -ENOSYS) | |
1761 | return rc; | |
1762 | #endif | |
1763 | ||
b1d9e6b0 CS |
1764 | list_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
1765 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); | |
1766 | if (thisrc != -ENOSYS) { | |
1767 | rc = thisrc; | |
1768 | if (thisrc != 0) | |
1769 | break; | |
1770 | } | |
1771 | } | |
1772 | return rc; | |
20510f2f JM |
1773 | } |
1774 | ||
1775 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1776 | { | |
f25fce3e | 1777 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1778 | } |
1779 | ||
1780 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1781 | { | |
f25fce3e | 1782 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1783 | } |
1784 | ||
8a076191 AD |
1785 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1786 | { | |
b1d9e6b0 | 1787 | *secid = 0; |
f25fce3e | 1788 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1789 | } |
1790 | ||
20510f2f JM |
1791 | int security_msg_msg_alloc(struct msg_msg *msg) |
1792 | { | |
ac8f82a0 CS |
1793 | int rc = lsm_msg_msg_alloc(msg); |
1794 | ||
1795 | if (rc) | |
1796 | return rc; | |
f25fce3e | 1797 | return call_int_hook(msg_msg_alloc_security, 0, msg); |
20510f2f JM |
1798 | } |
1799 | ||
1800 | void security_msg_msg_free(struct msg_msg *msg) | |
1801 | { | |
f25fce3e | 1802 | call_void_hook(msg_msg_free_security, msg); |
ac8f82a0 CS |
1803 | kfree(msg->security); |
1804 | msg->security = NULL; | |
20510f2f JM |
1805 | } |
1806 | ||
1807 | int security_msg_queue_alloc(struct msg_queue *msq) | |
1808 | { | |
ac8f82a0 CS |
1809 | int rc = lsm_ipc_alloc(&msq->q_perm); |
1810 | ||
1811 | if (rc) | |
1812 | return rc; | |
f25fce3e | 1813 | return call_int_hook(msg_queue_alloc_security, 0, msq); |
20510f2f JM |
1814 | } |
1815 | ||
1816 | void security_msg_queue_free(struct msg_queue *msq) | |
1817 | { | |
ac8f82a0 CS |
1818 | struct kern_ipc_perm *kip = &msq->q_perm; |
1819 | ||
f25fce3e | 1820 | call_void_hook(msg_queue_free_security, msq); |
ac8f82a0 CS |
1821 | kfree(kip->security); |
1822 | kip->security = NULL; | |
20510f2f JM |
1823 | } |
1824 | ||
1825 | int security_msg_queue_associate(struct msg_queue *msq, int msqflg) | |
1826 | { | |
f25fce3e | 1827 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
1828 | } |
1829 | ||
1830 | int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) | |
1831 | { | |
f25fce3e | 1832 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
1833 | } |
1834 | ||
1835 | int security_msg_queue_msgsnd(struct msg_queue *msq, | |
1836 | struct msg_msg *msg, int msqflg) | |
1837 | { | |
f25fce3e | 1838 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
1839 | } |
1840 | ||
1841 | int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, | |
1842 | struct task_struct *target, long type, int mode) | |
1843 | { | |
f25fce3e | 1844 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
1845 | } |
1846 | ||
1847 | int security_shm_alloc(struct shmid_kernel *shp) | |
1848 | { | |
ac8f82a0 CS |
1849 | int rc = lsm_ipc_alloc(&shp->shm_perm); |
1850 | ||
1851 | if (rc) | |
1852 | return rc; | |
f25fce3e | 1853 | return call_int_hook(shm_alloc_security, 0, shp); |
20510f2f JM |
1854 | } |
1855 | ||
1856 | void security_shm_free(struct shmid_kernel *shp) | |
1857 | { | |
ac8f82a0 CS |
1858 | struct kern_ipc_perm *kip = &shp->shm_perm; |
1859 | ||
f25fce3e | 1860 | call_void_hook(shm_free_security, shp); |
ac8f82a0 CS |
1861 | kfree(kip->security); |
1862 | kip->security = NULL; | |
20510f2f JM |
1863 | } |
1864 | ||
1865 | int security_shm_associate(struct shmid_kernel *shp, int shmflg) | |
1866 | { | |
f25fce3e | 1867 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
1868 | } |
1869 | ||
1870 | int security_shm_shmctl(struct shmid_kernel *shp, int cmd) | |
1871 | { | |
f25fce3e | 1872 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
1873 | } |
1874 | ||
1875 | int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) | |
1876 | { | |
f25fce3e | 1877 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
1878 | } |
1879 | ||
1880 | int security_sem_alloc(struct sem_array *sma) | |
1881 | { | |
ac8f82a0 CS |
1882 | int rc = lsm_ipc_alloc(&sma->sem_perm); |
1883 | ||
1884 | if (rc) | |
1885 | return rc; | |
f25fce3e | 1886 | return call_int_hook(sem_alloc_security, 0, sma); |
20510f2f JM |
1887 | } |
1888 | ||
1889 | void security_sem_free(struct sem_array *sma) | |
1890 | { | |
ac8f82a0 CS |
1891 | struct kern_ipc_perm *kip = &sma->sem_perm; |
1892 | ||
f25fce3e | 1893 | call_void_hook(sem_free_security, sma); |
ac8f82a0 CS |
1894 | kfree(kip->security); |
1895 | kip->security = NULL; | |
20510f2f JM |
1896 | } |
1897 | ||
1898 | int security_sem_associate(struct sem_array *sma, int semflg) | |
1899 | { | |
f25fce3e | 1900 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
1901 | } |
1902 | ||
1903 | int security_sem_semctl(struct sem_array *sma, int cmd) | |
1904 | { | |
f25fce3e | 1905 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
1906 | } |
1907 | ||
1908 | int security_sem_semop(struct sem_array *sma, struct sembuf *sops, | |
1909 | unsigned nsops, int alter) | |
1910 | { | |
f25fce3e | 1911 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
1912 | } |
1913 | ||
1914 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
1915 | { | |
1916 | if (unlikely(inode && IS_PRIVATE(inode))) | |
1917 | return; | |
f25fce3e | 1918 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
1919 | } |
1920 | EXPORT_SYMBOL(security_d_instantiate); | |
1921 | ||
9eee8d63 CS |
1922 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
1923 | char **value) | |
20510f2f | 1924 | { |
ab5e2f3f JJ |
1925 | #ifdef CONFIG_SECURITY_STACKING |
1926 | char *speclsm = lsm_of_task(p); | |
1927 | #endif | |
9eee8d63 | 1928 | struct security_hook_list *hp; |
a3c3cde2 CS |
1929 | char *vp; |
1930 | char *cp = NULL; | |
1931 | int trc; | |
9eee8d63 CS |
1932 | int rc; |
1933 | ||
a3c3cde2 CS |
1934 | /* |
1935 | * "context" requires work here in addition to what | |
1936 | * the modules provide. | |
1937 | */ | |
1938 | if (strcmp(name, "context") == 0) { | |
1939 | *value = NULL; | |
1940 | rc = -EINVAL; | |
1941 | list_for_each_entry(hp, | |
1942 | &security_hook_heads.getprocattr, list) { | |
1943 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1944 | continue; | |
1945 | trc = hp->hook.getprocattr(p, "context", &vp); | |
1946 | if (trc == -ENOENT) | |
1947 | continue; | |
1948 | if (trc <= 0) { | |
1949 | kfree(*value); | |
1950 | return trc; | |
1951 | } | |
1952 | rc = trc; | |
1953 | if (*value == NULL) { | |
1954 | *value = vp; | |
1955 | } else { | |
1956 | cp = kasprintf(GFP_KERNEL, "%s,%s", *value, vp); | |
1957 | if (cp == NULL) { | |
1958 | kfree(*value); | |
1959 | kfree(vp); | |
1960 | return -ENOMEM; | |
1961 | } | |
1962 | kfree(*value); | |
1963 | kfree(vp); | |
1964 | *value = cp; | |
1965 | } | |
1966 | } | |
1967 | if (rc > 0) | |
1968 | return strlen(*value); | |
1969 | return rc; | |
281260ac JJ |
1970 | } else if (strcmp(name, "display_lsm") == 0) { |
1971 | *value = kstrdup(current->security, GFP_KERNEL); | |
1972 | if (*value == NULL) | |
1973 | return -ENOMEM; | |
1974 | return strlen(*value); | |
a3c3cde2 CS |
1975 | } |
1976 | ||
9eee8d63 CS |
1977 | list_for_each_entry(hp, &security_hook_heads.getprocattr, list) { |
1978 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1979 | continue; | |
ab5e2f3f JJ |
1980 | #ifdef CONFIG_SECURITY_STACKING |
1981 | if (!lsm && speclsm && speclsm[0] && strcmp(speclsm, hp->lsm)) | |
1982 | continue; | |
1983 | #endif | |
9eee8d63 | 1984 | rc = hp->hook.getprocattr(p, name, value); |
4b84c3ba | 1985 | if (rc != -ENOSYS) |
9eee8d63 CS |
1986 | return rc; |
1987 | } | |
1988 | return -EINVAL; | |
20510f2f JM |
1989 | } |
1990 | ||
9eee8d63 CS |
1991 | int security_setprocattr(const char *lsm, const char *name, void *value, |
1992 | size_t size) | |
20510f2f | 1993 | { |
ab5e2f3f JJ |
1994 | #ifdef CONFIG_SECURITY_STACKING |
1995 | char *speclsm = lsm_of_task(current); | |
1996 | struct lsm_value *lsm_value = NULL; | |
1997 | int count; | |
1998 | #else | |
1999 | char *tvalue; | |
2000 | #endif | |
9eee8d63 CS |
2001 | struct security_hook_list *hp; |
2002 | int rc; | |
ab5e2f3f | 2003 | char *temp; |
a3c3cde2 | 2004 | char *cp; |
a3c3cde2 CS |
2005 | |
2006 | /* | |
2007 | * If lsm is NULL look at all the modules to find one | |
2008 | * that processes name. If lsm is not NULL only look at | |
2009 | * that module. | |
2010 | * | |
2011 | * "context" is handled directly here. | |
2012 | */ | |
2013 | if (strcmp(name, "context") == 0) { | |
a3c3cde2 | 2014 | rc = -EINVAL; |
ab5e2f3f JJ |
2015 | temp = kmemdup(value, size + 1, GFP_KERNEL); |
2016 | if (!temp) | |
2017 | return -ENOMEM; | |
2018 | ||
2019 | temp[size] = '\0'; | |
2020 | cp = strrchr(temp, '\''); | |
2021 | if (!cp) | |
2022 | goto free_out; | |
2023 | ||
2024 | cp[1] = '\0'; | |
2025 | #ifdef CONFIG_SECURITY_STACKING | |
2026 | lsm_value = kzalloc(sizeof(*lsm_value) * LSM_MAX_MAJOR, | |
2027 | GFP_KERNEL); | |
2028 | if (!lsm_value) { | |
2029 | rc = -ENOMEM; | |
2030 | goto free_out; | |
a3c3cde2 CS |
2031 | } |
2032 | ||
ab5e2f3f JJ |
2033 | count = lsm_parse_context(temp, lsm_value); |
2034 | if (count <= 0) | |
2035 | goto free_out; | |
2036 | ||
2037 | for (count--; count >= 0; count--) { | |
2038 | list_for_each_entry(hp, | |
2039 | &security_hook_heads.setprocattr, list) { | |
2040 | ||
2041 | if (lsm && strcmp(lsm, hp->lsm)) | |
2042 | continue; | |
2043 | if (!strcmp(hp->lsm, lsm_value[count].lsm)) { | |
2044 | rc = hp->hook.setprocattr("context", | |
2045 | lsm_value[count].data, | |
2046 | strlen(lsm_value[count].data)); | |
2047 | break; | |
2048 | } | |
2049 | } | |
2050 | if (rc < 0 || (lsm && rc >0)) | |
2051 | break; | |
2052 | } | |
2053 | #else /* CONFIG_SECURITY_STACKING */ | |
2054 | cp = strstr(temp, "='"); | |
2055 | if (!cp) | |
2056 | goto free_out; | |
2057 | *cp = '\0'; | |
2058 | tvalue = strchr(cp + 2, '\''); | |
2059 | if (!tvalue) | |
2060 | goto free_out; | |
a3c3cde2 | 2061 | list_for_each_entry(hp, &security_hook_heads.setprocattr, |
ab5e2f3f JJ |
2062 | list) { |
2063 | if (lsm == NULL || !strcmp(lsm, hp->lsm)) { | |
2064 | rc = hp->hook.setprocattr(name, tvalue, size); | |
2065 | break; | |
2066 | } | |
a3c3cde2 | 2067 | } |
ab5e2f3f | 2068 | #endif /* CONFIG_SECURITY_STACKING */ |
a3c3cde2 | 2069 | free_out: |
ab5e2f3f JJ |
2070 | kfree(temp); |
2071 | #ifdef CONFIG_SECURITY_STACKING | |
2072 | kfree(lsm_value); | |
2073 | #endif | |
2074 | if (rc >= 0) | |
2075 | return size; | |
a3c3cde2 | 2076 | return rc; |
281260ac JJ |
2077 | } else if (strcmp(name, "display_lsm") == 0) { |
2078 | #ifdef CONFIG_SECURITY_STACKING | |
2079 | if (set_lsm_of_current(value, size)) | |
2080 | return size; | |
2081 | #endif | |
2082 | return -EINVAL; | |
a3c3cde2 | 2083 | } |
9eee8d63 CS |
2084 | |
2085 | list_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
ab5e2f3f | 2086 | if (lsm && strcmp(lsm, hp->lsm)) |
9eee8d63 | 2087 | continue; |
ab5e2f3f JJ |
2088 | #ifdef CONFIG_SECURITY_STACKING |
2089 | if (!lsm && speclsm && speclsm[0] && strcmp(speclsm, hp->lsm)) | |
2090 | continue; | |
2091 | #endif | |
9eee8d63 | 2092 | rc = hp->hook.setprocattr(name, value, size); |
4b84c3ba | 2093 | if (rc) |
9eee8d63 CS |
2094 | return rc; |
2095 | } | |
2096 | return -EINVAL; | |
20510f2f JM |
2097 | } |
2098 | ||
2099 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2100 | { | |
f25fce3e | 2101 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2102 | } |
20510f2f | 2103 | |
746df9b5 DQ |
2104 | int security_ismaclabel(const char *name) |
2105 | { | |
f25fce3e | 2106 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2107 | } |
2108 | EXPORT_SYMBOL(security_ismaclabel); | |
2109 | ||
20510f2f JM |
2110 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
2111 | { | |
b1d9e6b0 CS |
2112 | return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata, |
2113 | seclen); | |
20510f2f JM |
2114 | } |
2115 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2116 | ||
7bf570dc | 2117 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 2118 | { |
b1d9e6b0 | 2119 | *secid = 0; |
f25fce3e | 2120 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
2121 | } |
2122 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2123 | ||
20510f2f JM |
2124 | void security_release_secctx(char *secdata, u32 seclen) |
2125 | { | |
ab5e2f3f JJ |
2126 | #ifdef CONFIG_SECURITY_STACKING |
2127 | char *speclsm = lsm_of_task(current); | |
2128 | #endif | |
2129 | struct security_hook_list *hp; | |
2130 | ||
2131 | list_for_each_entry(hp, &security_hook_heads.release_secctx, list) { | |
2132 | #ifdef CONFIG_SECURITY_STACKING | |
2133 | if (speclsm[0] && strcmp(hp->lsm, speclsm)) | |
2134 | continue; | |
2135 | #endif | |
2136 | hp->hook.release_secctx(secdata, seclen); | |
2137 | break; | |
2138 | } | |
20510f2f JM |
2139 | } |
2140 | EXPORT_SYMBOL(security_release_secctx); | |
2141 | ||
6f3be9f5 AG |
2142 | void security_inode_invalidate_secctx(struct inode *inode) |
2143 | { | |
2144 | call_void_hook(inode_invalidate_secctx, inode); | |
2145 | } | |
2146 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2147 | ||
1ee65e37 DQ |
2148 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2149 | { | |
f25fce3e | 2150 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2151 | } |
2152 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2153 | ||
2154 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2155 | { | |
f25fce3e | 2156 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2157 | } |
2158 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2159 | ||
2160 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
2161 | { | |
b1d9e6b0 | 2162 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
2163 | } |
2164 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2165 | ||
20510f2f JM |
2166 | #ifdef CONFIG_SECURITY_NETWORK |
2167 | ||
3610cda5 | 2168 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2169 | { |
f25fce3e | 2170 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2171 | } |
2172 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2173 | ||
2174 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2175 | { | |
f25fce3e | 2176 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2177 | } |
2178 | EXPORT_SYMBOL(security_unix_may_send); | |
2179 | ||
2180 | int security_socket_create(int family, int type, int protocol, int kern) | |
2181 | { | |
f25fce3e | 2182 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2183 | } |
2184 | ||
2185 | int security_socket_post_create(struct socket *sock, int family, | |
2186 | int type, int protocol, int kern) | |
2187 | { | |
f25fce3e | 2188 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2189 | protocol, kern); |
2190 | } | |
2191 | ||
2192 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) | |
2193 | { | |
f25fce3e | 2194 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2195 | } |
2196 | ||
2197 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2198 | { | |
f25fce3e | 2199 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2200 | } |
2201 | ||
2202 | int security_socket_listen(struct socket *sock, int backlog) | |
2203 | { | |
f25fce3e | 2204 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2205 | } |
2206 | ||
2207 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2208 | { | |
f25fce3e | 2209 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2210 | } |
2211 | ||
20510f2f JM |
2212 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2213 | { | |
f25fce3e | 2214 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2215 | } |
2216 | ||
2217 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2218 | int size, int flags) | |
2219 | { | |
f25fce3e | 2220 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2221 | } |
2222 | ||
2223 | int security_socket_getsockname(struct socket *sock) | |
2224 | { | |
f25fce3e | 2225 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2226 | } |
2227 | ||
2228 | int security_socket_getpeername(struct socket *sock) | |
2229 | { | |
f25fce3e | 2230 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2231 | } |
2232 | ||
2233 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2234 | { | |
f25fce3e | 2235 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2236 | } |
2237 | ||
2238 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2239 | { | |
f25fce3e | 2240 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2241 | } |
2242 | ||
2243 | int security_socket_shutdown(struct socket *sock, int how) | |
2244 | { | |
f25fce3e | 2245 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2246 | } |
2247 | ||
2248 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2249 | { | |
f25fce3e | 2250 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2251 | } |
2252 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2253 | ||
2254 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2255 | int __user *optlen, unsigned len) | |
2256 | { | |
d827e191 JJ |
2257 | #ifdef CONFIG_SECURITY_STACKING |
2258 | struct security_hook_list *hp; | |
2259 | char *lsm = lsm_of_task(current); | |
2260 | ||
2261 | list_for_each_entry(hp, &security_hook_heads.socket_getpeersec_stream, | |
2262 | list) { | |
2263 | if (!lsm || !lsm[0] || !strcmp(lsm, hp->lsm)) | |
2264 | return hp->hook.socket_getpeersec_stream(sock, optval, | |
2265 | optlen, len); | |
2266 | } | |
2267 | return -ENOPROTOOPT; | |
2268 | #else | |
b1d9e6b0 CS |
2269 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
2270 | optval, optlen, len); | |
d827e191 | 2271 | #endif |
20510f2f JM |
2272 | } |
2273 | ||
2274 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
2275 | { | |
e308fd3b JB |
2276 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
2277 | skb, secid); | |
20510f2f JM |
2278 | } |
2279 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2280 | ||
2281 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2282 | { | |
ac8f82a0 CS |
2283 | int rc = lsm_sock_alloc(sk, priority); |
2284 | ||
2285 | if (rc) | |
2286 | return rc; | |
f25fce3e | 2287 | return call_int_hook(sk_alloc_security, 0, sk, family, priority); |
20510f2f JM |
2288 | } |
2289 | ||
2290 | void security_sk_free(struct sock *sk) | |
2291 | { | |
f25fce3e | 2292 | call_void_hook(sk_free_security, sk); |
ac8f82a0 CS |
2293 | kfree(sk->sk_security); |
2294 | sk->sk_security = NULL; | |
20510f2f JM |
2295 | } |
2296 | ||
2297 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2298 | { | |
f25fce3e | 2299 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2300 | } |
6230c9b4 | 2301 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f JM |
2302 | |
2303 | void security_sk_classify_flow(struct sock *sk, struct flowi *fl) | |
2304 | { | |
f25fce3e | 2305 | call_void_hook(sk_getsecid, sk, &fl->flowi_secid); |
20510f2f JM |
2306 | } |
2307 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2308 | ||
2309 | void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) | |
2310 | { | |
f25fce3e | 2311 | call_void_hook(req_classify_flow, req, fl); |
20510f2f JM |
2312 | } |
2313 | EXPORT_SYMBOL(security_req_classify_flow); | |
2314 | ||
2315 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2316 | { | |
f25fce3e | 2317 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2318 | } |
2319 | EXPORT_SYMBOL(security_sock_graft); | |
2320 | ||
2321 | int security_inet_conn_request(struct sock *sk, | |
2322 | struct sk_buff *skb, struct request_sock *req) | |
2323 | { | |
f25fce3e | 2324 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2325 | } |
2326 | EXPORT_SYMBOL(security_inet_conn_request); | |
2327 | ||
2328 | void security_inet_csk_clone(struct sock *newsk, | |
2329 | const struct request_sock *req) | |
2330 | { | |
f25fce3e | 2331 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2332 | } |
2333 | ||
2334 | void security_inet_conn_established(struct sock *sk, | |
2335 | struct sk_buff *skb) | |
2336 | { | |
f25fce3e | 2337 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f JM |
2338 | } |
2339 | ||
2606fd1f EP |
2340 | int security_secmark_relabel_packet(u32 secid) |
2341 | { | |
f25fce3e | 2342 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2343 | } |
2344 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2345 | ||
2346 | void security_secmark_refcount_inc(void) | |
2347 | { | |
f25fce3e | 2348 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2349 | } |
2350 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2351 | ||
2352 | void security_secmark_refcount_dec(void) | |
2353 | { | |
f25fce3e | 2354 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2355 | } |
2356 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2357 | ||
5dbbaf2d PM |
2358 | int security_tun_dev_alloc_security(void **security) |
2359 | { | |
f25fce3e | 2360 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2361 | } |
2362 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2363 | ||
2364 | void security_tun_dev_free_security(void *security) | |
2365 | { | |
f25fce3e | 2366 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2367 | } |
2368 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2369 | ||
2b980dbd PM |
2370 | int security_tun_dev_create(void) |
2371 | { | |
f25fce3e | 2372 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2373 | } |
2374 | EXPORT_SYMBOL(security_tun_dev_create); | |
2375 | ||
5dbbaf2d | 2376 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2377 | { |
f25fce3e | 2378 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2379 | } |
5dbbaf2d | 2380 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2381 | |
5dbbaf2d | 2382 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2383 | { |
f25fce3e | 2384 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2385 | } |
2386 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2387 | ||
5dbbaf2d PM |
2388 | int security_tun_dev_open(void *security) |
2389 | { | |
f25fce3e | 2390 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2391 | } |
2392 | EXPORT_SYMBOL(security_tun_dev_open); | |
2393 | ||
20510f2f JM |
2394 | #endif /* CONFIG_SECURITY_NETWORK */ |
2395 | ||
d291f1a6 DJ |
2396 | #ifdef CONFIG_SECURITY_INFINIBAND |
2397 | ||
2398 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2399 | { | |
2400 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2401 | } | |
2402 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2403 | ||
47a2b338 DJ |
2404 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2405 | { | |
2406 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2407 | } | |
2408 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2409 | ||
d291f1a6 DJ |
2410 | int security_ib_alloc_security(void **sec) |
2411 | { | |
2412 | return call_int_hook(ib_alloc_security, 0, sec); | |
2413 | } | |
2414 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2415 | ||
2416 | void security_ib_free_security(void *sec) | |
2417 | { | |
2418 | call_void_hook(ib_free_security, sec); | |
2419 | } | |
2420 | EXPORT_SYMBOL(security_ib_free_security); | |
2421 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2422 | ||
20510f2f JM |
2423 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2424 | ||
52a4c640 NA |
2425 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2426 | struct xfrm_user_sec_ctx *sec_ctx, | |
2427 | gfp_t gfp) | |
20510f2f | 2428 | { |
f25fce3e | 2429 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2430 | } |
2431 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2432 | ||
03e1ad7b PM |
2433 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2434 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2435 | { |
f25fce3e | 2436 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2437 | } |
2438 | ||
03e1ad7b | 2439 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2440 | { |
f25fce3e | 2441 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2442 | } |
2443 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2444 | ||
03e1ad7b | 2445 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2446 | { |
f25fce3e | 2447 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2448 | } |
2449 | ||
2e5aa866 PM |
2450 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2451 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2452 | { |
f25fce3e | 2453 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2454 | } |
2455 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2456 | ||
2457 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2458 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2459 | { | |
f25fce3e | 2460 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2461 | } |
2462 | ||
2463 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2464 | { | |
f25fce3e | 2465 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2466 | } |
2467 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2468 | ||
2469 | void security_xfrm_state_free(struct xfrm_state *x) | |
2470 | { | |
f25fce3e | 2471 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2472 | } |
2473 | ||
03e1ad7b | 2474 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
20510f2f | 2475 | { |
f25fce3e | 2476 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
20510f2f JM |
2477 | } |
2478 | ||
2479 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 DM |
2480 | struct xfrm_policy *xp, |
2481 | const struct flowi *fl) | |
20510f2f | 2482 | { |
b1d9e6b0 CS |
2483 | struct security_hook_list *hp; |
2484 | int rc = 1; | |
2485 | ||
2486 | /* | |
2487 | * Since this function is expected to return 0 or 1, the judgment | |
2488 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2489 | * we can use the first LSM's judgment because currently only SELinux | |
2490 | * supplies this call. | |
2491 | * | |
2492 | * For speed optimization, we explicitly break the loop rather than | |
2493 | * using the macro | |
2494 | */ | |
2495 | list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, | |
2496 | list) { | |
2497 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl); | |
2498 | break; | |
2499 | } | |
2500 | return rc; | |
20510f2f JM |
2501 | } |
2502 | ||
2503 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2504 | { | |
f25fce3e | 2505 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2506 | } |
2507 | ||
2508 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) | |
2509 | { | |
f25fce3e CS |
2510 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, |
2511 | 0); | |
20510f2f JM |
2512 | |
2513 | BUG_ON(rc); | |
2514 | } | |
2515 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2516 | ||
2517 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2518 | ||
2519 | #ifdef CONFIG_KEYS | |
2520 | ||
d84f4f99 DH |
2521 | int security_key_alloc(struct key *key, const struct cred *cred, |
2522 | unsigned long flags) | |
20510f2f | 2523 | { |
ac8f82a0 CS |
2524 | int rc = lsm_key_alloc(key); |
2525 | ||
2526 | if (rc) | |
2527 | return rc; | |
f25fce3e | 2528 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2529 | } |
2530 | ||
2531 | void security_key_free(struct key *key) | |
2532 | { | |
f25fce3e | 2533 | call_void_hook(key_free, key); |
ac8f82a0 CS |
2534 | kfree(key->security); |
2535 | key->security = NULL; | |
20510f2f JM |
2536 | } |
2537 | ||
2538 | int security_key_permission(key_ref_t key_ref, | |
f5895943 | 2539 | const struct cred *cred, unsigned perm) |
20510f2f | 2540 | { |
f25fce3e | 2541 | return call_int_hook(key_permission, 0, key_ref, cred, perm); |
20510f2f JM |
2542 | } |
2543 | ||
70a5bb72 DH |
2544 | int security_key_getsecurity(struct key *key, char **_buffer) |
2545 | { | |
b1d9e6b0 | 2546 | *_buffer = NULL; |
f25fce3e | 2547 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2548 | } |
2549 | ||
20510f2f | 2550 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2551 | |
2552 | #ifdef CONFIG_AUDIT | |
2553 | ||
2554 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2555 | { | |
f25fce3e | 2556 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
03d37d25 AD |
2557 | } |
2558 | ||
2559 | int security_audit_rule_known(struct audit_krule *krule) | |
2560 | { | |
f25fce3e | 2561 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2562 | } |
2563 | ||
2564 | void security_audit_rule_free(void *lsmrule) | |
2565 | { | |
f25fce3e | 2566 | call_void_hook(audit_rule_free, lsmrule); |
03d37d25 AD |
2567 | } |
2568 | ||
2569 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, | |
2570 | struct audit_context *actx) | |
2571 | { | |
f25fce3e CS |
2572 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule, |
2573 | actx); | |
03d37d25 | 2574 | } |
b1d9e6b0 | 2575 | #endif /* CONFIG_AUDIT */ |