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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 | ||
afdb09c7 | 15 | #include <linux/bpf.h> |
c59ede7b | 16 | #include <linux/capability.h> |
d47be3df | 17 | #include <linux/dcache.h> |
1da177e4 LT |
18 | #include <linux/module.h> |
19 | #include <linux/init.h> | |
20 | #include <linux/kernel.h> | |
3c4ed7bd | 21 | #include <linux/lsm_hooks.h> |
f381c272 | 22 | #include <linux/integrity.h> |
6c21a7fb | 23 | #include <linux/ima.h> |
3e1be52d | 24 | #include <linux/evm.h> |
40401530 | 25 | #include <linux/fsnotify.h> |
8b3ec681 AV |
26 | #include <linux/mman.h> |
27 | #include <linux/mount.h> | |
28 | #include <linux/personality.h> | |
75331a59 | 29 | #include <linux/backing-dev.h> |
3bb857e4 | 30 | #include <linux/string.h> |
7a90fc39 | 31 | #include <linux/msg.h> |
a69a0684 | 32 | #include <linux/prctl.h> |
40401530 | 33 | #include <net/flow.h> |
7a90fc39 | 34 | #include <net/sock.h> |
1da177e4 | 35 | |
823eb1cc | 36 | #define MAX_LSM_EVM_XATTR 2 |
1da177e4 | 37 | |
b1d9e6b0 CS |
38 | /* Maximum number of letters for an LSM name string */ |
39 | #define SECURITY_NAME_MAX 10 | |
f9047a0c | 40 | #define SECURITY_CHOSEN_NAMES_MAX (SECURITY_NAME_MAX * LSM_MAX_MAJOR) |
54f4b36b | 41 | #define MODULE_STACK "(stacking)" |
b1d9e6b0 | 42 | |
3dfc9b02 | 43 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
8f408ab6 DJ |
44 | static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain); |
45 | ||
ab9b110b | 46 | static struct kmem_cache *lsm_file_cache; |
7a90fc39 | 47 | static struct kmem_cache *lsm_inode_cache; |
ab9b110b | 48 | |
d69dece5 | 49 | char *lsm_names; |
a69a0684 JJ |
50 | |
51 | /* | |
52 | * If stacking is enabled the task blob will always | |
53 | * include an indicator of what security module data | |
54 | * should be displayed. This is set with PR_SET_DISPLAY_LSM. | |
55 | */ | |
56 | static struct lsm_blob_sizes blob_sizes = { | |
57 | #ifdef CONFIG_SECURITY_STACKING | |
469fbb39 | 58 | .lbs_task = SECURITY_NAME_MAX + 6, |
a69a0684 JJ |
59 | #endif |
60 | }; | |
f1efc8c4 | 61 | |
076c54c5 | 62 | /* Boot-time LSM user choice */ |
f9047a0c | 63 | static __initdata char chosen_lsms[SECURITY_CHOSEN_NAMES_MAX + 1] = |
54f4b36b CS |
64 | #ifdef CONFIG_SECURITY_STACKING |
65 | MODULE_STACK; | |
66 | #else | |
6e65f92f | 67 | CONFIG_DEFAULT_SECURITY; |
54f4b36b | 68 | #endif |
adf8a6ee JJ |
69 | static __initdata char chosen_display_lsm[SECURITY_NAME_MAX + 1] |
70 | #ifdef CONFIG_SECURITY_STACKING | |
71 | = CONFIG_SECURITY_DEFAULT_DISPLAY_NAME | |
72 | #endif | |
73 | ; | |
6a3b4b47 | 74 | static char default_display_lsm[SECURITY_NAME_MAX + 1]; |
1da177e4 | 75 | |
1da177e4 LT |
76 | static void __init do_security_initcalls(void) |
77 | { | |
78 | initcall_t *call; | |
79 | call = __security_initcall_start; | |
80 | while (call < __security_initcall_end) { | |
81 | (*call) (); | |
82 | call++; | |
83 | } | |
84 | } | |
85 | ||
86 | /** | |
87 | * security_init - initializes the security framework | |
88 | * | |
89 | * This should be called early in the kernel initialization sequence. | |
90 | */ | |
91 | int __init security_init(void) | |
92 | { | |
3dfc9b02 TH |
93 | int i; |
94 | struct list_head *list = (struct list_head *) &security_hook_heads; | |
95 | ||
96 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head); | |
97 | i++) | |
98 | INIT_LIST_HEAD(&list[i]); | |
b1d9e6b0 | 99 | pr_info("Security Framework initialized\n"); |
1da177e4 | 100 | |
b1d9e6b0 | 101 | /* |
730daa16 | 102 | * Load minor LSMs, with the capability module always first. |
b1d9e6b0 CS |
103 | */ |
104 | capability_add_hooks(); | |
b1d9e6b0 | 105 | yama_add_hooks(); |
9b091556 | 106 | loadpin_add_hooks(); |
730daa16 | 107 | |
b1d9e6b0 | 108 | /* |
f1efc8c4 CS |
109 | * The first call to a module specific init function |
110 | * updates the blob size requirements. | |
111 | */ | |
112 | do_security_initcalls(); | |
113 | ||
ab9b110b CS |
114 | /* |
115 | * Create any kmem_caches needed for blobs | |
116 | */ | |
117 | if (blob_sizes.lbs_file) | |
118 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
119 | blob_sizes.lbs_file, 0, | |
120 | SLAB_PANIC, NULL); | |
7a90fc39 CS |
121 | if (blob_sizes.lbs_inode) |
122 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
123 | blob_sizes.lbs_inode, 0, | |
124 | SLAB_PANIC, NULL); | |
f1efc8c4 CS |
125 | /* |
126 | * The second call to a module specific init function | |
127 | * adds hooks to the hook lists and does any other early | |
128 | * initializations required. | |
b1d9e6b0 | 129 | */ |
1da177e4 LT |
130 | do_security_initcalls(); |
131 | ||
f1efc8c4 CS |
132 | #ifdef CONFIG_SECURITY_LSM_DEBUG |
133 | pr_info("LSM: cred blob size = %d\n", blob_sizes.lbs_cred); | |
ab9b110b | 134 | pr_info("LSM: file blob size = %d\n", blob_sizes.lbs_file); |
7a90fc39 CS |
135 | pr_info("LSM: inode blob size = %d\n", blob_sizes.lbs_inode); |
136 | pr_info("LSM: ipc blob size = %d\n", blob_sizes.lbs_ipc); | |
137 | #ifdef CONFIG_KEYS | |
138 | pr_info("LSM: key blob size = %d\n", blob_sizes.lbs_key); | |
139 | #endif /* CONFIG_KEYS */ | |
140 | pr_info("LSM: msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
141 | pr_info("LSM: sock blob size = %d\n", blob_sizes.lbs_sock); | |
142 | pr_info("LSM: superblock blob size = %d\n", blob_sizes.lbs_superblock); | |
7f79f508 | 143 | pr_info("LSM: task blob size = %d\n", blob_sizes.lbs_task); |
7a90fc39 | 144 | #endif /* CONFIG_SECURITY_LSM_DEBUG */ |
f1efc8c4 | 145 | |
1da177e4 LT |
146 | return 0; |
147 | } | |
148 | ||
076c54c5 AD |
149 | /* Save user chosen LSM */ |
150 | static int __init choose_lsm(char *str) | |
151 | { | |
f9047a0c JJ |
152 | strncpy(chosen_lsms, str, SECURITY_CHOSEN_NAMES_MAX); |
153 | pr_info("LSM: command line set '%s' security module(s).\n", | |
154 | chosen_lsms); | |
076c54c5 AD |
155 | return 1; |
156 | } | |
157 | __setup("security=", choose_lsm); | |
158 | ||
6a3b4b47 JJ |
159 | static int __init choose_display_lsm(char *str) |
160 | { | |
161 | strncpy(chosen_display_lsm, str, SECURITY_NAME_MAX); | |
162 | pr_info("LSM: command line set default display lsm %s'\n", | |
163 | chosen_display_lsm); | |
164 | return 1; | |
165 | } | |
166 | __setup("security.display=", choose_display_lsm); | |
167 | ||
3bb857e4 MS |
168 | static bool match_last_lsm(const char *list, const char *lsm) |
169 | { | |
170 | const char *last; | |
171 | ||
172 | if (WARN_ON(!list || !lsm)) | |
173 | return false; | |
174 | last = strrchr(list, ','); | |
175 | if (last) | |
176 | /* Pass the comma, strcmp() will check for '\0' */ | |
177 | last++; | |
178 | else | |
179 | last = list; | |
180 | return !strcmp(last, lsm); | |
181 | } | |
182 | ||
d69dece5 CS |
183 | static int lsm_append(char *new, char **result) |
184 | { | |
185 | char *cp; | |
186 | ||
187 | if (*result == NULL) { | |
188 | *result = kstrdup(new, GFP_KERNEL); | |
cf5fe980 EB |
189 | if (*result == NULL) |
190 | return -ENOMEM; | |
d69dece5 | 191 | } else { |
3bb857e4 MS |
192 | /* Check if it is the last registered name */ |
193 | if (match_last_lsm(*result, new)) | |
194 | return 0; | |
d69dece5 CS |
195 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
196 | if (cp == NULL) | |
197 | return -ENOMEM; | |
198 | kfree(*result); | |
199 | *result = cp; | |
200 | } | |
201 | return 0; | |
202 | } | |
203 | ||
076c54c5 AD |
204 | /** |
205 | * security_module_enable - Load given security module on boot ? | |
b1d9e6b0 | 206 | * @module: the name of the module |
54f4b36b | 207 | * @stacked: indicates that the module wants to be stacked |
076c54c5 AD |
208 | * |
209 | * Each LSM must pass this method before registering its own operations | |
210 | * to avoid security registration races. This method may also be used | |
7cea51be | 211 | * to check if your LSM is currently loaded during kernel initialization. |
076c54c5 | 212 | * |
0e056eb5 MCC |
213 | * Returns: |
214 | * | |
215 | * true if: | |
216 | * | |
217 | * - The passed LSM is the one chosen by user at boot time, | |
218 | * - or the passed LSM is configured as the default and the user did not | |
219 | * choose an alternate LSM at boot time. | |
220 | * | |
076c54c5 AD |
221 | * Otherwise, return false. |
222 | */ | |
f9047a0c JJ |
223 | #ifdef CONFIG_SECURITY_STACKING |
224 | static bool __init cmp_lsms(const char *lsm) | |
225 | { | |
226 | const char *str = chosen_lsms; | |
227 | const char *split; | |
228 | int len = strlen(lsm); | |
229 | ||
230 | if (len > SECURITY_NAME_MAX) { | |
231 | pr_info("LSM: security module name '%s' exceeds limit\n", lsm); | |
232 | return false; | |
233 | } | |
234 | for (split = strchr(str, ','); split; split = strchr(str, ',')) { | |
235 | if ((len == split - str) && !strncmp(lsm, str, split - str)) | |
236 | return true; | |
237 | str = split + 1; | |
238 | } | |
239 | if ((len == strlen(str)) && !strncmp(lsm, str, strlen(str))) | |
240 | return true; | |
241 | return false; | |
242 | } | |
243 | #endif | |
244 | ||
54f4b36b | 245 | bool __init security_module_enable(const char *lsm, const bool stacked) |
076c54c5 | 246 | { |
54f4b36b CS |
247 | #ifdef CONFIG_SECURITY_STACKING |
248 | /* | |
249 | * Module defined on the command line security=XXXX | |
250 | */ | |
6a3b4b47 JJ |
251 | if (strcmp(chosen_lsms, MODULE_STACK)) { |
252 | if (cmp_lsms(lsm)) { | |
253 | /* set to first LSM registered and then override */ | |
254 | if (!*default_display_lsm) | |
255 | strcpy(default_display_lsm, lsm); | |
256 | else if (*chosen_display_lsm && !strcmp(chosen_display_lsm, lsm)) { | |
257 | strcpy(default_display_lsm, lsm); | |
258 | pr_info("LSM: default display lsm '%s'\n", default_display_lsm); | |
259 | } | |
260 | return true; | |
261 | } | |
262 | return false; | |
263 | } | |
54f4b36b CS |
264 | /* |
265 | * Module configured as stacked. | |
266 | */ | |
6a3b4b47 JJ |
267 | if (stacked && !*default_display_lsm) |
268 | strcpy(default_display_lsm, lsm); | |
269 | else if (stacked && *chosen_display_lsm && !strcmp(chosen_display_lsm, lsm)) { | |
270 | strcpy(default_display_lsm, lsm); | |
271 | pr_info("LSM: default display lsm '%s'\n", default_display_lsm); | |
272 | } | |
273 | ||
54f4b36b CS |
274 | return stacked; |
275 | #else | |
6a3b4b47 JJ |
276 | if (strcmp(lsm, chosen_lsms) == 0) { |
277 | strcpy(default_display_lsm, lsm); | |
54f4b36b | 278 | return true; |
6a3b4b47 | 279 | } |
54f4b36b CS |
280 | return false; |
281 | #endif | |
076c54c5 AD |
282 | } |
283 | ||
d0c8f0ad JJ |
284 | /* |
285 | * Keep the order of major modules for mapping secids. | |
286 | */ | |
287 | static int lsm_next_major; | |
288 | ||
d69dece5 CS |
289 | /** |
290 | * security_add_hooks - Add a modules hooks to the hook lists. | |
291 | * @hooks: the hooks to add | |
292 | * @count: the number of hooks to add | |
293 | * @lsm: the name of the security module | |
294 | * | |
295 | * Each LSM has to register its hooks with the infrastructure. | |
296 | */ | |
297 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
298 | char *lsm) | |
299 | { | |
300 | int i; | |
d0c8f0ad JJ |
301 | int lsm_index = lsm_next_major++; |
302 | ||
303 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
304 | pr_info("LSM: Security module %s gets index %d\n", lsm, lsm_index); | |
305 | #endif | |
d69dece5 CS |
306 | for (i = 0; i < count; i++) { |
307 | hooks[i].lsm = lsm; | |
d0c8f0ad | 308 | hooks[i].lsm_index = lsm_index; |
d69dece5 CS |
309 | list_add_tail_rcu(&hooks[i].list, hooks[i].head); |
310 | } | |
311 | if (lsm_append(lsm, &lsm_names) < 0) | |
312 | panic("%s - Cannot get early memory.\n", __func__); | |
313 | } | |
314 | ||
8f408ab6 DJ |
315 | int call_lsm_notifier(enum lsm_event event, void *data) |
316 | { | |
317 | return atomic_notifier_call_chain(&lsm_notifier_chain, event, data); | |
318 | } | |
319 | EXPORT_SYMBOL(call_lsm_notifier); | |
320 | ||
321 | int register_lsm_notifier(struct notifier_block *nb) | |
322 | { | |
323 | return atomic_notifier_chain_register(&lsm_notifier_chain, nb); | |
324 | } | |
325 | EXPORT_SYMBOL(register_lsm_notifier); | |
326 | ||
327 | int unregister_lsm_notifier(struct notifier_block *nb) | |
328 | { | |
329 | return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb); | |
330 | } | |
331 | EXPORT_SYMBOL(unregister_lsm_notifier); | |
332 | ||
f1efc8c4 CS |
333 | /** |
334 | * lsm_cred_alloc - allocate a composite cred blob | |
335 | * @cred: the cred that needs a blob | |
336 | * @gfp: allocation type | |
337 | * | |
338 | * Allocate the cred blob for all the modules | |
339 | * | |
340 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
341 | */ | |
342 | int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
343 | { | |
344 | if (blob_sizes.lbs_cred == 0) { | |
345 | cred->security = NULL; | |
346 | return 0; | |
347 | } | |
348 | ||
349 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
350 | if (cred->security == NULL) | |
351 | return -ENOMEM; | |
352 | return 0; | |
353 | } | |
354 | ||
355 | /** | |
356 | * lsm_early_cred - during initialization allocate a composite cred blob | |
357 | * @cred: the cred that needs a blob | |
358 | * | |
359 | * Allocate the cred blob for all the modules if it's not already there | |
360 | */ | |
361 | void lsm_early_cred(struct cred *cred) | |
362 | { | |
363 | int rc; | |
364 | ||
365 | if (cred == NULL) | |
366 | panic("%s: NULL cred.\n", __func__); | |
367 | if (cred->security != NULL) | |
368 | return; | |
369 | rc = lsm_cred_alloc(cred, GFP_KERNEL); | |
370 | if (rc) | |
371 | panic("%s: Early cred alloc failed.\n", __func__); | |
372 | } | |
373 | ||
374 | static void __init lsm_set_size(int *need, int *lbs) | |
375 | { | |
376 | int offset; | |
377 | ||
378 | if (*need > 0) { | |
379 | offset = *lbs; | |
380 | *lbs += *need; | |
381 | *need = offset; | |
382 | } | |
383 | } | |
384 | ||
385 | /** | |
386 | * security_add_blobs - Report blob sizes | |
387 | * @needed: the size of blobs needed by the module | |
388 | * | |
389 | * Each LSM has to register its blobs with the infrastructure. | |
390 | * The "needed" data tells the infrastructure how much memory | |
391 | * the module requires for each of its blobs. On return the | |
392 | * structure is filled with the offset that module should use | |
393 | * from the blob pointer. | |
394 | */ | |
395 | void __init security_add_blobs(struct lsm_blob_sizes *needed) | |
396 | { | |
397 | lsm_set_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
ab9b110b | 398 | lsm_set_size(&needed->lbs_file, &blob_sizes.lbs_file); |
7a90fc39 CS |
399 | lsm_set_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
400 | lsm_set_size(&needed->lbs_key, &blob_sizes.lbs_key); | |
401 | lsm_set_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
402 | lsm_set_size(&needed->lbs_sock, &blob_sizes.lbs_sock); | |
403 | lsm_set_size(&needed->lbs_superblock, &blob_sizes.lbs_superblock); | |
7f79f508 | 404 | lsm_set_size(&needed->lbs_task, &blob_sizes.lbs_task); |
7a90fc39 CS |
405 | /* |
406 | * The inode blob gets an rcu_head in addition to | |
407 | * what the modules might need. | |
408 | */ | |
409 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
410 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
411 | lsm_set_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ab9b110b CS |
412 | } |
413 | ||
414 | /** | |
415 | * lsm_file_alloc - allocate a composite file blob | |
416 | * @file: the file that needs a blob | |
417 | * | |
418 | * Allocate the file blob for all the modules | |
419 | * | |
420 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
421 | */ | |
422 | int lsm_file_alloc(struct file *file) | |
423 | { | |
424 | if (!lsm_file_cache) { | |
425 | file->f_security = NULL; | |
426 | return 0; | |
427 | } | |
428 | ||
429 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
430 | if (file->f_security == NULL) | |
431 | return -ENOMEM; | |
432 | return 0; | |
f1efc8c4 CS |
433 | } |
434 | ||
a69a0684 JJ |
435 | #ifdef CONFIG_SECURITY_STACKING |
436 | static inline char *lsm_of_task(struct task_struct *task) | |
437 | { | |
438 | #ifdef CONFIG_SECURITY_LSM_DEBUG | |
439 | if (task->security == NULL) | |
440 | pr_info("%s: task has no lsm name.\n", __func__); | |
441 | #endif | |
442 | return task->security; | |
443 | } | |
444 | #endif | |
445 | ||
7f79f508 CS |
446 | /** |
447 | * lsm_task_alloc - allocate a composite task blob | |
448 | * @task: the task that needs a blob | |
449 | * | |
450 | * Allocate the task blob for all the modules | |
451 | * | |
452 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
453 | */ | |
454 | int lsm_task_alloc(struct task_struct *task) | |
455 | { | |
456 | if (blob_sizes.lbs_task == 0) { | |
457 | task->security = NULL; | |
458 | return 0; | |
459 | } | |
460 | ||
461 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
462 | if (task->security == NULL) | |
463 | return -ENOMEM; | |
76afa12e JJ |
464 | |
465 | /* inherit current display lsm */ | |
466 | #ifdef CONFIG_SECURITY_STACKING | |
467 | if (current->security) | |
468 | strcpy(task->security, lsm_of_task(current)); | |
6a3b4b47 JJ |
469 | else |
470 | strcpy(task->security, default_display_lsm); | |
76afa12e | 471 | #endif |
7f79f508 CS |
472 | return 0; |
473 | } | |
474 | ||
7a90fc39 CS |
475 | /** |
476 | * lsm_inode_alloc - allocate a composite inode blob | |
477 | * @inode: the inode that needs a blob | |
478 | * | |
479 | * Allocate the inode blob for all the modules | |
480 | * | |
481 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
482 | */ | |
483 | int lsm_inode_alloc(struct inode *inode) | |
484 | { | |
485 | if (!lsm_inode_cache) { | |
486 | inode->i_security = NULL; | |
487 | return 0; | |
488 | } | |
489 | ||
490 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_KERNEL); | |
491 | if (inode->i_security == NULL) | |
492 | return -ENOMEM; | |
493 | return 0; | |
494 | } | |
495 | ||
496 | /** | |
497 | * lsm_early_inode - during initialization allocate a composite inode blob | |
498 | * @inode: the inode that needs a blob | |
499 | * | |
500 | * Allocate the inode blob for all the modules if it's not already there | |
501 | */ | |
502 | void lsm_early_inode(struct inode *inode) | |
503 | { | |
504 | int rc; | |
505 | ||
506 | if (inode == NULL) | |
507 | panic("%s: NULL inode.\n", __func__); | |
508 | if (inode->i_security != NULL) | |
509 | return; | |
510 | rc = lsm_inode_alloc(inode); | |
511 | if (rc) | |
512 | panic("%s: Early inode alloc failed.\n", __func__); | |
513 | } | |
514 | ||
515 | /** | |
516 | * lsm_ipc_alloc - allocate a composite ipc blob | |
517 | * @kip: the ipc that needs a blob | |
518 | * | |
519 | * Allocate the ipc blob for all the modules | |
520 | * | |
521 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
522 | */ | |
523 | int lsm_ipc_alloc(struct kern_ipc_perm *kip) | |
524 | { | |
525 | if (blob_sizes.lbs_ipc == 0) { | |
526 | kip->security = NULL; | |
527 | return 0; | |
528 | } | |
529 | ||
530 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
531 | if (kip->security == NULL) | |
532 | return -ENOMEM; | |
533 | return 0; | |
534 | } | |
535 | ||
536 | #ifdef CONFIG_KEYS | |
537 | /** | |
538 | * lsm_key_alloc - allocate a composite key blob | |
539 | * @key: the key that needs a blob | |
540 | * | |
541 | * Allocate the key blob for all the modules | |
542 | * | |
543 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
544 | */ | |
545 | int lsm_key_alloc(struct key *key) | |
546 | { | |
547 | if (blob_sizes.lbs_key == 0) { | |
548 | key->security = NULL; | |
549 | return 0; | |
550 | } | |
551 | ||
552 | key->security = kzalloc(blob_sizes.lbs_key, GFP_KERNEL); | |
553 | if (key->security == NULL) | |
554 | return -ENOMEM; | |
555 | return 0; | |
556 | } | |
557 | #endif /* CONFIG_KEYS */ | |
558 | ||
559 | /** | |
560 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
561 | * @mp: the msg_msg that needs a blob | |
562 | * | |
563 | * Allocate the ipc blob for all the modules | |
564 | * | |
565 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
566 | */ | |
567 | int lsm_msg_msg_alloc(struct msg_msg *mp) | |
568 | { | |
569 | if (blob_sizes.lbs_msg_msg == 0) { | |
570 | mp->security = NULL; | |
571 | return 0; | |
572 | } | |
573 | ||
574 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
575 | if (mp->security == NULL) | |
576 | return -ENOMEM; | |
577 | return 0; | |
578 | } | |
579 | ||
580 | /** | |
581 | * lsm_sock_alloc - allocate a composite sock blob | |
582 | * @sock: the sock that needs a blob | |
583 | * @priority: allocation mode | |
584 | * | |
585 | * Allocate the sock blob for all the modules | |
586 | * | |
587 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
588 | */ | |
589 | int lsm_sock_alloc(struct sock *sock, gfp_t priority) | |
590 | { | |
591 | if (blob_sizes.lbs_sock == 0) { | |
592 | sock->sk_security = NULL; | |
593 | return 0; | |
594 | } | |
595 | ||
596 | sock->sk_security = kzalloc(blob_sizes.lbs_sock, priority); | |
597 | if (sock->sk_security == NULL) | |
598 | return -ENOMEM; | |
599 | return 0; | |
600 | } | |
601 | ||
602 | /** | |
603 | * lsm_superblock_alloc - allocate a composite superblock blob | |
604 | * @sb: the superblock that needs a blob | |
605 | * | |
606 | * Allocate the superblock blob for all the modules | |
607 | * | |
608 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
609 | */ | |
610 | int lsm_superblock_alloc(struct super_block *sb) | |
611 | { | |
612 | if (blob_sizes.lbs_superblock == 0) { | |
613 | sb->s_security = NULL; | |
614 | return 0; | |
615 | } | |
616 | ||
617 | sb->s_security = kzalloc(blob_sizes.lbs_superblock, GFP_KERNEL); | |
618 | if (sb->s_security == NULL) | |
619 | return -ENOMEM; | |
620 | return 0; | |
621 | } | |
622 | ||
f25fce3e | 623 | /* |
b1d9e6b0 | 624 | * Hook list operation macros. |
1da177e4 | 625 | * |
f25fce3e CS |
626 | * call_void_hook: |
627 | * This is a hook that does not return a value. | |
1da177e4 | 628 | * |
f25fce3e CS |
629 | * call_int_hook: |
630 | * This is a hook that returns a value. | |
1da177e4 | 631 | */ |
1da177e4 | 632 | |
b1d9e6b0 CS |
633 | #define call_void_hook(FUNC, ...) \ |
634 | do { \ | |
635 | struct security_hook_list *P; \ | |
636 | \ | |
637 | list_for_each_entry(P, &security_hook_heads.FUNC, list) \ | |
638 | P->hook.FUNC(__VA_ARGS__); \ | |
639 | } while (0) | |
640 | ||
641 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
642 | int RC = IRC; \ | |
643 | do { \ | |
644 | struct security_hook_list *P; \ | |
645 | \ | |
646 | list_for_each_entry(P, &security_hook_heads.FUNC, list) { \ | |
647 | RC = P->hook.FUNC(__VA_ARGS__); \ | |
648 | if (RC != 0) \ | |
649 | break; \ | |
650 | } \ | |
651 | } while (0); \ | |
652 | RC; \ | |
653 | }) | |
1da177e4 | 654 | |
20510f2f JM |
655 | /* Security operations */ |
656 | ||
79af7307 SS |
657 | int security_binder_set_context_mgr(struct task_struct *mgr) |
658 | { | |
f25fce3e | 659 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 SS |
660 | } |
661 | ||
662 | int security_binder_transaction(struct task_struct *from, | |
663 | struct task_struct *to) | |
664 | { | |
f25fce3e | 665 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 SS |
666 | } |
667 | ||
668 | int security_binder_transfer_binder(struct task_struct *from, | |
669 | struct task_struct *to) | |
670 | { | |
f25fce3e | 671 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 SS |
672 | } |
673 | ||
674 | int security_binder_transfer_file(struct task_struct *from, | |
675 | struct task_struct *to, struct file *file) | |
676 | { | |
f25fce3e | 677 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 SS |
678 | } |
679 | ||
9e48858f | 680 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 681 | { |
f25fce3e | 682 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
683 | } |
684 | ||
685 | int security_ptrace_traceme(struct task_struct *parent) | |
686 | { | |
f25fce3e | 687 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
688 | } |
689 | ||
690 | int security_capget(struct task_struct *target, | |
691 | kernel_cap_t *effective, | |
692 | kernel_cap_t *inheritable, | |
693 | kernel_cap_t *permitted) | |
694 | { | |
f25fce3e CS |
695 | return call_int_hook(capget, 0, target, |
696 | effective, inheritable, permitted); | |
20510f2f JM |
697 | } |
698 | ||
d84f4f99 DH |
699 | int security_capset(struct cred *new, const struct cred *old, |
700 | const kernel_cap_t *effective, | |
701 | const kernel_cap_t *inheritable, | |
702 | const kernel_cap_t *permitted) | |
20510f2f | 703 | { |
f25fce3e CS |
704 | return call_int_hook(capset, 0, new, old, |
705 | effective, inheritable, permitted); | |
20510f2f JM |
706 | } |
707 | ||
b7e724d3 | 708 | int security_capable(const struct cred *cred, struct user_namespace *ns, |
3486740a | 709 | int cap) |
20510f2f | 710 | { |
f25fce3e | 711 | return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT); |
06112163 EP |
712 | } |
713 | ||
c7eba4a9 EP |
714 | int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, |
715 | int cap) | |
06112163 | 716 | { |
f25fce3e | 717 | return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT); |
20510f2f JM |
718 | } |
719 | ||
20510f2f JM |
720 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
721 | { | |
f25fce3e | 722 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
723 | } |
724 | ||
725 | int security_quota_on(struct dentry *dentry) | |
726 | { | |
f25fce3e | 727 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
728 | } |
729 | ||
12b3052c | 730 | int security_syslog(int type) |
20510f2f | 731 | { |
f25fce3e | 732 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
733 | } |
734 | ||
457db29b | 735 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 736 | { |
f25fce3e | 737 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
738 | } |
739 | ||
20510f2f JM |
740 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
741 | { | |
b1d9e6b0 CS |
742 | struct security_hook_list *hp; |
743 | int cap_sys_admin = 1; | |
744 | int rc; | |
745 | ||
746 | /* | |
747 | * The module will respond with a positive value if | |
748 | * it thinks the __vm_enough_memory() call should be | |
749 | * made with the cap_sys_admin set. If all of the modules | |
750 | * agree that it should be set it will. If any module | |
751 | * thinks it should not be set it won't. | |
752 | */ | |
753 | list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { | |
754 | rc = hp->hook.vm_enough_memory(mm, pages); | |
755 | if (rc <= 0) { | |
756 | cap_sys_admin = 0; | |
757 | break; | |
758 | } | |
759 | } | |
760 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
761 | } |
762 | ||
a6f76f23 | 763 | int security_bprm_set_creds(struct linux_binprm *bprm) |
20510f2f | 764 | { |
f25fce3e | 765 | return call_int_hook(bprm_set_creds, 0, bprm); |
20510f2f JM |
766 | } |
767 | ||
a6f76f23 | 768 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 769 | { |
6c21a7fb MZ |
770 | int ret; |
771 | ||
f25fce3e | 772 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
773 | if (ret) |
774 | return ret; | |
775 | return ima_bprm_check(bprm); | |
20510f2f JM |
776 | } |
777 | ||
a6f76f23 | 778 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 779 | { |
f25fce3e | 780 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
781 | } |
782 | ||
a6f76f23 | 783 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 784 | { |
f25fce3e | 785 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
786 | } |
787 | ||
20510f2f JM |
788 | int security_sb_alloc(struct super_block *sb) |
789 | { | |
7a90fc39 CS |
790 | int rc = lsm_superblock_alloc(sb); |
791 | ||
792 | if (unlikely(rc)) | |
793 | return rc; | |
794 | rc = call_int_hook(sb_alloc_security, 0, sb); | |
795 | if (unlikely(rc)) | |
796 | security_sb_free(sb); | |
797 | return rc; | |
20510f2f JM |
798 | } |
799 | ||
800 | void security_sb_free(struct super_block *sb) | |
801 | { | |
f25fce3e | 802 | call_void_hook(sb_free_security, sb); |
7a90fc39 CS |
803 | kfree(sb->s_security); |
804 | sb->s_security = NULL; | |
20510f2f JM |
805 | } |
806 | ||
e0007529 | 807 | int security_sb_copy_data(char *orig, char *copy) |
20510f2f | 808 | { |
f25fce3e | 809 | return call_int_hook(sb_copy_data, 0, orig, copy); |
20510f2f | 810 | } |
e0007529 | 811 | EXPORT_SYMBOL(security_sb_copy_data); |
20510f2f | 812 | |
ff36fe2c EP |
813 | int security_sb_remount(struct super_block *sb, void *data) |
814 | { | |
f25fce3e | 815 | return call_int_hook(sb_remount, 0, sb, data); |
ff36fe2c EP |
816 | } |
817 | ||
12204e24 | 818 | int security_sb_kern_mount(struct super_block *sb, int flags, void *data) |
20510f2f | 819 | { |
f25fce3e | 820 | return call_int_hook(sb_kern_mount, 0, sb, flags, data); |
20510f2f JM |
821 | } |
822 | ||
2069f457 EP |
823 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
824 | { | |
f25fce3e | 825 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
826 | } |
827 | ||
20510f2f JM |
828 | int security_sb_statfs(struct dentry *dentry) |
829 | { | |
f25fce3e | 830 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
831 | } |
832 | ||
8a04c43b | 833 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 834 | const char *type, unsigned long flags, void *data) |
20510f2f | 835 | { |
f25fce3e | 836 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
837 | } |
838 | ||
20510f2f JM |
839 | int security_sb_umount(struct vfsmount *mnt, int flags) |
840 | { | |
f25fce3e | 841 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
842 | } |
843 | ||
3b73b68c | 844 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 845 | { |
f25fce3e | 846 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
847 | } |
848 | ||
c9180a57 | 849 | int security_sb_set_mnt_opts(struct super_block *sb, |
649f6e77 DQ |
850 | struct security_mnt_opts *opts, |
851 | unsigned long kern_flags, | |
852 | unsigned long *set_kern_flags) | |
c9180a57 | 853 | { |
b1d9e6b0 CS |
854 | return call_int_hook(sb_set_mnt_opts, |
855 | opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb, | |
856 | opts, kern_flags, set_kern_flags); | |
c9180a57 | 857 | } |
e0007529 | 858 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 859 | |
094f7b69 | 860 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
861 | struct super_block *newsb, |
862 | unsigned long kern_flags, | |
863 | unsigned long *set_kern_flags) | |
c9180a57 | 864 | { |
0b4d3452 SM |
865 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
866 | kern_flags, set_kern_flags); | |
c9180a57 | 867 | } |
e0007529 EP |
868 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
869 | ||
870 | int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) | |
871 | { | |
f25fce3e | 872 | return call_int_hook(sb_parse_opts_str, 0, options, opts); |
e0007529 EP |
873 | } |
874 | EXPORT_SYMBOL(security_sb_parse_opts_str); | |
c9180a57 | 875 | |
20510f2f JM |
876 | int security_inode_alloc(struct inode *inode) |
877 | { | |
7a90fc39 CS |
878 | int rc = lsm_inode_alloc(inode); |
879 | ||
880 | if (unlikely(rc)) | |
881 | return rc; | |
882 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
883 | if (unlikely(rc)) | |
884 | security_inode_free(inode); | |
885 | return rc; | |
886 | } | |
887 | ||
888 | static void inode_free_by_rcu(struct rcu_head *head) | |
889 | { | |
890 | /* | |
891 | * The rcu head is at the start of the inode blob | |
892 | */ | |
893 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
894 | } |
895 | ||
896 | void security_inode_free(struct inode *inode) | |
897 | { | |
f381c272 | 898 | integrity_inode_free(inode); |
f25fce3e | 899 | call_void_hook(inode_free_security, inode); |
7a90fc39 CS |
900 | /* |
901 | * The inode may still be referenced in a path walk and | |
902 | * a call to security_inode_permission() can be made | |
903 | * after inode_free_security() is called. Ideally, the VFS | |
904 | * wouldn't do this, but fixing that is a much harder | |
905 | * job. For now, simply free the i_security via RCU, and | |
906 | * leave the current inode->i_security pointer intact. | |
907 | * The inode will be freed after the RCU grace period too. | |
908 | */ | |
909 | if (inode->i_security) | |
910 | call_rcu((struct rcu_head *)inode->i_security, | |
911 | inode_free_by_rcu); | |
20510f2f JM |
912 | } |
913 | ||
d47be3df | 914 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 915 | const struct qstr *name, void **ctx, |
d47be3df DQ |
916 | u32 *ctxlen) |
917 | { | |
b1d9e6b0 CS |
918 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
919 | name, ctx, ctxlen); | |
d47be3df DQ |
920 | } |
921 | EXPORT_SYMBOL(security_dentry_init_security); | |
922 | ||
2602625b VG |
923 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
924 | struct qstr *name, | |
925 | const struct cred *old, struct cred *new) | |
926 | { | |
927 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
928 | name, old, new); | |
929 | } | |
930 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
931 | ||
20510f2f | 932 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
933 | const struct qstr *qstr, |
934 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 935 | { |
823eb1cc MZ |
936 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
937 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
938 | int ret; |
939 | ||
20510f2f | 940 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 941 | return 0; |
9d8f13ba | 942 | |
9d8f13ba | 943 | if (!initxattrs) |
e308fd3b JB |
944 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
945 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 946 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 947 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 948 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
949 | &lsm_xattr->name, |
950 | &lsm_xattr->value, | |
951 | &lsm_xattr->value_len); | |
952 | if (ret) | |
953 | goto out; | |
823eb1cc MZ |
954 | |
955 | evm_xattr = lsm_xattr + 1; | |
956 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
957 | if (ret) | |
958 | goto out; | |
9d8f13ba MZ |
959 | ret = initxattrs(inode, new_xattrs, fs_data); |
960 | out: | |
9548906b | 961 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 962 | kfree(xattr->value); |
9d8f13ba MZ |
963 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
964 | } | |
965 | EXPORT_SYMBOL(security_inode_init_security); | |
966 | ||
967 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, | |
9548906b | 968 | const struct qstr *qstr, const char **name, |
9d8f13ba | 969 | void **value, size_t *len) |
20510f2f JM |
970 | { |
971 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 972 | return -EOPNOTSUPP; |
e308fd3b JB |
973 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
974 | qstr, name, value, len); | |
20510f2f | 975 | } |
9d8f13ba | 976 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 977 | |
be6d3e56 | 978 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 979 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
980 | unsigned int dev) |
981 | { | |
c6f493d6 | 982 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 983 | return 0; |
f25fce3e | 984 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
985 | } |
986 | EXPORT_SYMBOL(security_path_mknod); | |
987 | ||
d3607752 | 988 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 989 | { |
c6f493d6 | 990 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 991 | return 0; |
f25fce3e | 992 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 993 | } |
82140443 | 994 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 995 | |
989f74e0 | 996 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 997 | { |
c6f493d6 | 998 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 999 | return 0; |
f25fce3e | 1000 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 | 1001 | } |
c088e31d | 1002 | EXPORT_SYMBOL_GPL(security_path_rmdir); |
be6d3e56 | 1003 | |
989f74e0 | 1004 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1005 | { |
c6f493d6 | 1006 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1007 | return 0; |
f25fce3e | 1008 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1009 | } |
82140443 | 1010 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1011 | |
d3607752 | 1012 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1013 | const char *old_name) |
1014 | { | |
c6f493d6 | 1015 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1016 | return 0; |
f25fce3e | 1017 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 | 1018 | } |
c088e31d | 1019 | EXPORT_SYMBOL_GPL(security_path_symlink); |
be6d3e56 | 1020 | |
3ccee46a | 1021 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1022 | struct dentry *new_dentry) |
1023 | { | |
c6f493d6 | 1024 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1025 | return 0; |
f25fce3e | 1026 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 | 1027 | } |
c088e31d | 1028 | EXPORT_SYMBOL_GPL(security_path_link); |
be6d3e56 | 1029 | |
3ccee46a AV |
1030 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1031 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1032 | unsigned int flags) |
be6d3e56 | 1033 | { |
c6f493d6 DH |
1034 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1035 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1036 | return 0; |
da1ce067 MS |
1037 | |
1038 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1039 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1040 | old_dir, old_dentry); | |
da1ce067 MS |
1041 | if (err) |
1042 | return err; | |
1043 | } | |
1044 | ||
f25fce3e CS |
1045 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1046 | new_dentry); | |
be6d3e56 | 1047 | } |
82140443 | 1048 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1049 | |
81f4c506 | 1050 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1051 | { |
c6f493d6 | 1052 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1053 | return 0; |
f25fce3e | 1054 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1055 | } |
c088e31d | 1056 | EXPORT_SYMBOL_GPL(security_path_truncate); |
89eda068 | 1057 | |
be01f9f2 | 1058 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1059 | { |
c6f493d6 | 1060 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1061 | return 0; |
f25fce3e | 1062 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 | 1063 | } |
c088e31d | 1064 | EXPORT_SYMBOL_GPL(security_path_chmod); |
89eda068 | 1065 | |
7fd25dac | 1066 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1067 | { |
c6f493d6 | 1068 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1069 | return 0; |
f25fce3e | 1070 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1071 | } |
c088e31d | 1072 | EXPORT_SYMBOL_GPL(security_path_chown); |
8b8efb44 | 1073 | |
77b286c0 | 1074 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1075 | { |
f25fce3e | 1076 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1077 | } |
be6d3e56 KT |
1078 | #endif |
1079 | ||
4acdaf27 | 1080 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1081 | { |
1082 | if (unlikely(IS_PRIVATE(dir))) | |
1083 | return 0; | |
f25fce3e | 1084 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1085 | } |
800a9647 | 1086 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1087 | |
1088 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1089 | struct dentry *new_dentry) | |
1090 | { | |
c6f493d6 | 1091 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1092 | return 0; |
f25fce3e | 1093 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1094 | } |
1095 | ||
1096 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1097 | { | |
c6f493d6 | 1098 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1099 | return 0; |
f25fce3e | 1100 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1101 | } |
1102 | ||
1103 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1104 | const char *old_name) | |
1105 | { | |
1106 | if (unlikely(IS_PRIVATE(dir))) | |
1107 | return 0; | |
f25fce3e | 1108 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1109 | } |
1110 | ||
18bb1db3 | 1111 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1112 | { |
1113 | if (unlikely(IS_PRIVATE(dir))) | |
1114 | return 0; | |
f25fce3e | 1115 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1116 | } |
800a9647 | 1117 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1118 | |
1119 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1120 | { | |
c6f493d6 | 1121 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1122 | return 0; |
f25fce3e | 1123 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1124 | } |
1125 | ||
1a67aafb | 1126 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1127 | { |
1128 | if (unlikely(IS_PRIVATE(dir))) | |
1129 | return 0; | |
f25fce3e | 1130 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1131 | } |
1132 | ||
1133 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1134 | struct inode *new_dir, struct dentry *new_dentry, |
1135 | unsigned int flags) | |
20510f2f | 1136 | { |
c6f493d6 DH |
1137 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1138 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1139 | return 0; |
da1ce067 MS |
1140 | |
1141 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1142 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1143 | old_dir, old_dentry); |
1144 | if (err) | |
1145 | return err; | |
1146 | } | |
1147 | ||
f25fce3e | 1148 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1149 | new_dir, new_dentry); |
1150 | } | |
1151 | ||
1152 | int security_inode_readlink(struct dentry *dentry) | |
1153 | { | |
c6f493d6 | 1154 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1155 | return 0; |
f25fce3e | 1156 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f | 1157 | } |
c088e31d | 1158 | EXPORT_SYMBOL_GPL(security_inode_readlink); |
20510f2f | 1159 | |
bda0be7a N |
1160 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1161 | bool rcu) | |
20510f2f | 1162 | { |
bda0be7a | 1163 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1164 | return 0; |
e22619a2 | 1165 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1166 | } |
1167 | ||
b77b0646 | 1168 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1169 | { |
1170 | if (unlikely(IS_PRIVATE(inode))) | |
1171 | return 0; | |
f25fce3e | 1172 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f | 1173 | } |
c088e31d | 1174 | EXPORT_SYMBOL_GPL(security_inode_permission); |
20510f2f JM |
1175 | |
1176 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1177 | { | |
817b54aa MZ |
1178 | int ret; |
1179 | ||
c6f493d6 | 1180 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1181 | return 0; |
f25fce3e | 1182 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1183 | if (ret) |
1184 | return ret; | |
1185 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1186 | } |
b1da47e2 | 1187 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1188 | |
3f7036a0 | 1189 | int security_inode_getattr(const struct path *path) |
20510f2f | 1190 | { |
c6f493d6 | 1191 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1192 | return 0; |
f25fce3e | 1193 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1194 | } |
1195 | ||
8f0cfa52 DH |
1196 | int security_inode_setxattr(struct dentry *dentry, const char *name, |
1197 | const void *value, size_t size, int flags) | |
20510f2f | 1198 | { |
3e1be52d MZ |
1199 | int ret; |
1200 | ||
c6f493d6 | 1201 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1202 | return 0; |
b1d9e6b0 CS |
1203 | /* |
1204 | * SELinux and Smack integrate the cap call, | |
1205 | * so assume that all LSMs supplying this call do so. | |
1206 | */ | |
1207 | ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, | |
f25fce3e | 1208 | flags); |
b1d9e6b0 CS |
1209 | |
1210 | if (ret == 1) | |
1211 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1212 | if (ret) |
1213 | return ret; | |
1214 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1215 | if (ret) |
1216 | return ret; | |
1217 | return evm_inode_setxattr(dentry, name, value, size); | |
20510f2f JM |
1218 | } |
1219 | ||
8f0cfa52 DH |
1220 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1221 | const void *value, size_t size, int flags) | |
20510f2f | 1222 | { |
c6f493d6 | 1223 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1224 | return; |
f25fce3e | 1225 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1226 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1227 | } |
1228 | ||
8f0cfa52 | 1229 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1230 | { |
c6f493d6 | 1231 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1232 | return 0; |
f25fce3e | 1233 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1234 | } |
1235 | ||
1236 | int security_inode_listxattr(struct dentry *dentry) | |
1237 | { | |
c6f493d6 | 1238 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1239 | return 0; |
f25fce3e | 1240 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1241 | } |
1242 | ||
8f0cfa52 | 1243 | int security_inode_removexattr(struct dentry *dentry, const char *name) |
20510f2f | 1244 | { |
3e1be52d MZ |
1245 | int ret; |
1246 | ||
c6f493d6 | 1247 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1248 | return 0; |
b1d9e6b0 CS |
1249 | /* |
1250 | * SELinux and Smack integrate the cap call, | |
1251 | * so assume that all LSMs supplying this call do so. | |
1252 | */ | |
1253 | ret = call_int_hook(inode_removexattr, 1, dentry, name); | |
1254 | if (ret == 1) | |
1255 | ret = cap_inode_removexattr(dentry, name); | |
42c63330 MZ |
1256 | if (ret) |
1257 | return ret; | |
1258 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1259 | if (ret) |
1260 | return ret; | |
1261 | return evm_inode_removexattr(dentry, name); | |
20510f2f JM |
1262 | } |
1263 | ||
b5376771 SH |
1264 | int security_inode_need_killpriv(struct dentry *dentry) |
1265 | { | |
f25fce3e | 1266 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1267 | } |
1268 | ||
1269 | int security_inode_killpriv(struct dentry *dentry) | |
1270 | { | |
f25fce3e | 1271 | return call_int_hook(inode_killpriv, 0, dentry); |
b5376771 SH |
1272 | } |
1273 | ||
ea861dfd | 1274 | int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) |
20510f2f | 1275 | { |
2885c1e3 CS |
1276 | struct security_hook_list *hp; |
1277 | int rc; | |
1278 | ||
20510f2f | 1279 | if (unlikely(IS_PRIVATE(inode))) |
8d952504 | 1280 | return -EOPNOTSUPP; |
2885c1e3 CS |
1281 | /* |
1282 | * Only one module will provide an attribute with a given name. | |
1283 | */ | |
1284 | list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { | |
1285 | rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); | |
1286 | if (rc != -EOPNOTSUPP) | |
1287 | return rc; | |
1288 | } | |
1289 | return -EOPNOTSUPP; | |
20510f2f JM |
1290 | } |
1291 | ||
1292 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1293 | { | |
2885c1e3 CS |
1294 | struct security_hook_list *hp; |
1295 | int rc; | |
1296 | ||
20510f2f | 1297 | if (unlikely(IS_PRIVATE(inode))) |
8d952504 | 1298 | return -EOPNOTSUPP; |
2885c1e3 CS |
1299 | /* |
1300 | * Only one module will provide an attribute with a given name. | |
1301 | */ | |
1302 | list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { | |
1303 | rc = hp->hook.inode_setsecurity(inode, name, value, size, | |
1304 | flags); | |
1305 | if (rc != -EOPNOTSUPP) | |
1306 | return rc; | |
1307 | } | |
1308 | return -EOPNOTSUPP; | |
20510f2f JM |
1309 | } |
1310 | ||
1311 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1312 | { | |
1313 | if (unlikely(IS_PRIVATE(inode))) | |
1314 | return 0; | |
f25fce3e | 1315 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1316 | } |
c9bccef6 | 1317 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1318 | |
d6335d77 | 1319 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1320 | { |
f25fce3e | 1321 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1322 | } |
1323 | ||
d8ad8b49 VG |
1324 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1325 | { | |
1326 | return call_int_hook(inode_copy_up, 0, src, new); | |
1327 | } | |
1328 | EXPORT_SYMBOL(security_inode_copy_up); | |
1329 | ||
121ab822 VG |
1330 | int security_inode_copy_up_xattr(const char *name) |
1331 | { | |
1332 | return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name); | |
1333 | } | |
1334 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1335 | ||
20510f2f JM |
1336 | int security_file_permission(struct file *file, int mask) |
1337 | { | |
c4ec54b4 EP |
1338 | int ret; |
1339 | ||
f25fce3e | 1340 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1341 | if (ret) |
1342 | return ret; | |
1343 | ||
1344 | return fsnotify_perm(file, mask); | |
20510f2f | 1345 | } |
c088e31d | 1346 | EXPORT_SYMBOL_GPL(security_file_permission); |
20510f2f JM |
1347 | |
1348 | int security_file_alloc(struct file *file) | |
1349 | { | |
ab9b110b CS |
1350 | int rc = lsm_file_alloc(file); |
1351 | ||
7a90fc39 | 1352 | if (unlikely(rc)) |
ab9b110b CS |
1353 | return rc; |
1354 | rc = call_int_hook(file_alloc_security, 0, file); | |
1355 | if (unlikely(rc)) | |
1356 | security_file_free(file); | |
1357 | return rc; | |
20510f2f JM |
1358 | } |
1359 | ||
1360 | void security_file_free(struct file *file) | |
1361 | { | |
ab9b110b CS |
1362 | void *blob; |
1363 | ||
1364 | if (!lsm_file_cache) | |
1365 | return; | |
1366 | ||
f25fce3e | 1367 | call_void_hook(file_free_security, file); |
ab9b110b CS |
1368 | |
1369 | blob = file->f_security; | |
1370 | file->f_security = NULL; | |
1371 | kmem_cache_free(lsm_file_cache, blob); | |
20510f2f JM |
1372 | } |
1373 | ||
1374 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1375 | { | |
f25fce3e | 1376 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f JM |
1377 | } |
1378 | ||
98de59bf | 1379 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1380 | { |
8b3ec681 | 1381 | /* |
98de59bf AV |
1382 | * Does we have PROT_READ and does the application expect |
1383 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1384 | */ |
98de59bf AV |
1385 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1386 | return prot; | |
8b3ec681 | 1387 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1388 | return prot; |
1389 | /* | |
1390 | * if that's an anonymous mapping, let it. | |
1391 | */ | |
1392 | if (!file) | |
1393 | return prot | PROT_EXEC; | |
1394 | /* | |
1395 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1396 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1397 | */ |
90f8572b | 1398 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1399 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1400 | if (file->f_op->mmap_capabilities) { |
1401 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1402 | if (!(caps & NOMMU_MAP_EXEC)) | |
1403 | return prot; | |
1404 | } | |
8b3ec681 | 1405 | #endif |
98de59bf | 1406 | return prot | PROT_EXEC; |
8b3ec681 | 1407 | } |
98de59bf AV |
1408 | /* anything on noexec mount won't get PROT_EXEC */ |
1409 | return prot; | |
1410 | } | |
1411 | ||
1412 | int security_mmap_file(struct file *file, unsigned long prot, | |
1413 | unsigned long flags) | |
1414 | { | |
1415 | int ret; | |
f25fce3e | 1416 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1417 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1418 | if (ret) |
1419 | return ret; | |
1420 | return ima_file_mmap(file, prot); | |
20510f2f | 1421 | } |
c088e31d | 1422 | EXPORT_SYMBOL_GPL(security_mmap_file); |
20510f2f | 1423 | |
e5467859 AV |
1424 | int security_mmap_addr(unsigned long addr) |
1425 | { | |
f25fce3e | 1426 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1427 | } |
1428 | ||
20510f2f JM |
1429 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1430 | unsigned long prot) | |
1431 | { | |
f25fce3e | 1432 | return call_int_hook(file_mprotect, 0, vma, reqprot, prot); |
20510f2f JM |
1433 | } |
1434 | ||
1435 | int security_file_lock(struct file *file, unsigned int cmd) | |
1436 | { | |
f25fce3e | 1437 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1438 | } |
1439 | ||
1440 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1441 | { | |
f25fce3e | 1442 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1443 | } |
1444 | ||
e0b93edd | 1445 | void security_file_set_fowner(struct file *file) |
20510f2f | 1446 | { |
f25fce3e | 1447 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1448 | } |
1449 | ||
1450 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1451 | struct fown_struct *fown, int sig) | |
1452 | { | |
f25fce3e | 1453 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1454 | } |
1455 | ||
1456 | int security_file_receive(struct file *file) | |
1457 | { | |
f25fce3e | 1458 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1459 | } |
1460 | ||
83d49856 | 1461 | int security_file_open(struct file *file, const struct cred *cred) |
20510f2f | 1462 | { |
c4ec54b4 EP |
1463 | int ret; |
1464 | ||
f25fce3e | 1465 | ret = call_int_hook(file_open, 0, file, cred); |
c4ec54b4 EP |
1466 | if (ret) |
1467 | return ret; | |
1468 | ||
1469 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1470 | } |
1471 | ||
e4e55b47 TH |
1472 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1473 | { | |
7f79f508 CS |
1474 | int rc = lsm_task_alloc(task); |
1475 | ||
7a90fc39 | 1476 | if (unlikely(rc)) |
7f79f508 CS |
1477 | return rc; |
1478 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1479 | if (unlikely(rc)) | |
1480 | security_task_free(task); | |
1481 | return rc; | |
e4e55b47 TH |
1482 | } |
1483 | ||
1a2a4d06 KC |
1484 | void security_task_free(struct task_struct *task) |
1485 | { | |
f25fce3e | 1486 | call_void_hook(task_free, task); |
7f79f508 CS |
1487 | |
1488 | kfree(task->security); | |
1489 | task->security = NULL; | |
1a2a4d06 KC |
1490 | } |
1491 | ||
ee18d64c DH |
1492 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1493 | { | |
f1efc8c4 CS |
1494 | int rc = lsm_cred_alloc(cred, gfp); |
1495 | ||
7a90fc39 | 1496 | if (unlikely(rc)) |
f1efc8c4 CS |
1497 | return rc; |
1498 | ||
1499 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
ab9b110b | 1500 | if (unlikely(rc)) |
f1efc8c4 CS |
1501 | security_cred_free(cred); |
1502 | return rc; | |
ee18d64c DH |
1503 | } |
1504 | ||
d84f4f99 | 1505 | void security_cred_free(struct cred *cred) |
20510f2f | 1506 | { |
9405bd1d JM |
1507 | /* |
1508 | * There is a failure case in prepare_creds() that | |
1509 | * may result in a call here with ->security being NULL. | |
1510 | */ | |
1511 | if (unlikely(cred->security == NULL)) | |
1512 | return; | |
1513 | ||
f25fce3e | 1514 | call_void_hook(cred_free, cred); |
f1efc8c4 CS |
1515 | |
1516 | kfree(cred->security); | |
1517 | cred->security = NULL; | |
20510f2f JM |
1518 | } |
1519 | ||
d84f4f99 | 1520 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1521 | { |
f1efc8c4 CS |
1522 | int rc = lsm_cred_alloc(new, gfp); |
1523 | ||
7a90fc39 | 1524 | if (unlikely(rc)) |
f1efc8c4 CS |
1525 | return rc; |
1526 | ||
1527 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
ab9b110b | 1528 | if (unlikely(rc)) |
f1efc8c4 CS |
1529 | security_cred_free(new); |
1530 | return rc; | |
d84f4f99 DH |
1531 | } |
1532 | ||
ee18d64c DH |
1533 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1534 | { | |
f25fce3e | 1535 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1536 | } |
1537 | ||
3a3b7ce9 DH |
1538 | int security_kernel_act_as(struct cred *new, u32 secid) |
1539 | { | |
f25fce3e | 1540 | return call_int_hook(kernel_act_as, 0, new, secid); |
3a3b7ce9 DH |
1541 | } |
1542 | ||
1543 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1544 | { | |
f25fce3e | 1545 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1546 | } |
1547 | ||
dd8dbf2e | 1548 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1549 | { |
f25fce3e | 1550 | return call_int_hook(kernel_module_request, 0, kmod_name); |
9188499c EP |
1551 | } |
1552 | ||
39eeb4fb MZ |
1553 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id) |
1554 | { | |
1555 | int ret; | |
1556 | ||
1557 | ret = call_int_hook(kernel_read_file, 0, file, id); | |
1558 | if (ret) | |
1559 | return ret; | |
1560 | return ima_read_file(file, id); | |
1561 | } | |
1562 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1563 | ||
bc8ca5b9 MZ |
1564 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1565 | enum kernel_read_file_id id) | |
b44a7dfc | 1566 | { |
cf222217 MZ |
1567 | int ret; |
1568 | ||
1569 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1570 | if (ret) | |
1571 | return ret; | |
1572 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1573 | } |
1574 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1575 | ||
d84f4f99 DH |
1576 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1577 | int flags) | |
20510f2f | 1578 | { |
f25fce3e | 1579 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1580 | } |
1581 | ||
20510f2f JM |
1582 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1583 | { | |
f25fce3e | 1584 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1585 | } |
1586 | ||
1587 | int security_task_getpgid(struct task_struct *p) | |
1588 | { | |
f25fce3e | 1589 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1590 | } |
1591 | ||
1592 | int security_task_getsid(struct task_struct *p) | |
1593 | { | |
f25fce3e | 1594 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1595 | } |
1596 | ||
1597 | void security_task_getsecid(struct task_struct *p, u32 *secid) | |
1598 | { | |
b1d9e6b0 | 1599 | *secid = 0; |
f25fce3e | 1600 | call_void_hook(task_getsecid, p, secid); |
20510f2f JM |
1601 | } |
1602 | EXPORT_SYMBOL(security_task_getsecid); | |
1603 | ||
20510f2f JM |
1604 | int security_task_setnice(struct task_struct *p, int nice) |
1605 | { | |
f25fce3e | 1606 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1607 | } |
1608 | ||
1609 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1610 | { | |
f25fce3e | 1611 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1612 | } |
1613 | ||
1614 | int security_task_getioprio(struct task_struct *p) | |
1615 | { | |
f25fce3e | 1616 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1617 | } |
1618 | ||
791ec491 SS |
1619 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1620 | unsigned int flags) | |
1621 | { | |
1622 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1623 | } | |
1624 | ||
8fd00b4d JS |
1625 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1626 | struct rlimit *new_rlim) | |
20510f2f | 1627 | { |
f25fce3e | 1628 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1629 | } |
1630 | ||
b0ae1981 | 1631 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1632 | { |
f25fce3e | 1633 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1634 | } |
1635 | ||
1636 | int security_task_getscheduler(struct task_struct *p) | |
1637 | { | |
f25fce3e | 1638 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1639 | } |
1640 | ||
1641 | int security_task_movememory(struct task_struct *p) | |
1642 | { | |
f25fce3e | 1643 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1644 | } |
1645 | ||
1646 | int security_task_kill(struct task_struct *p, struct siginfo *info, | |
1647 | int sig, u32 secid) | |
1648 | { | |
f25fce3e | 1649 | return call_int_hook(task_kill, 0, p, info, sig, secid); |
20510f2f JM |
1650 | } |
1651 | ||
a69a0684 JJ |
1652 | #ifdef CONFIG_SECURITY_STACKING |
1653 | static char *nolsm = "-default"; | |
1654 | #define NOLSMLEN 9 | |
1655 | ||
c9353421 JJ |
1656 | static bool is_registered_lsm(const char *str, size_t size) |
1657 | { | |
1658 | struct security_hook_list *hp; | |
1659 | ||
1660 | list_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
1661 | if (size == strlen(hp->lsm) && !strncmp(str, hp->lsm, size)) | |
1662 | return true; | |
1663 | } | |
1664 | ||
1665 | return false; | |
1666 | } | |
1667 | ||
1668 | static bool set_lsm_of_current(const char *str, size_t size) | |
1669 | { | |
1670 | char *lsm = lsm_of_task(current); | |
1671 | ||
1672 | if (is_registered_lsm(str, size)) { | |
1673 | strncpy(lsm, str, size); | |
1674 | lsm[size] = '\0'; | |
1675 | } else if (size == NOLSMLEN && !strncmp(str, nolsm, size)) { | |
1676 | lsm[0] = '\0'; | |
1677 | } else { | |
1678 | return false; | |
1679 | } | |
1680 | return true; | |
1681 | } | |
1682 | ||
a69a0684 JJ |
1683 | static int lsm_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
1684 | unsigned long arg4, unsigned long arg5) | |
1685 | { | |
1686 | char *lsm = lsm_of_task(current); | |
1687 | char buffer[SECURITY_NAME_MAX + 1]; | |
1688 | __user char *optval = (__user char *)arg2; | |
1689 | __user int *optlen = (__user int *)arg3; | |
1690 | int dlen; | |
1691 | int len; | |
1692 | ||
1693 | switch (option) { | |
1694 | case PR_GET_DISPLAY_LSM: | |
1695 | len = arg4; | |
1696 | if (lsm[0] == '\0') { | |
1697 | lsm = nolsm; | |
1698 | dlen = NOLSMLEN; | |
1699 | } else | |
1700 | dlen = strlen(lsm) + 1; | |
1701 | if (dlen > len) | |
1702 | return -ERANGE; | |
1703 | if (copy_to_user(optval, lsm, dlen)) | |
1704 | return -EFAULT; | |
1705 | if (put_user(dlen, optlen)) | |
1706 | return -EFAULT; | |
1707 | break; | |
1708 | case PR_SET_DISPLAY_LSM: | |
1709 | len = arg3; | |
1710 | if (len > SECURITY_NAME_MAX) | |
1711 | return -EINVAL; | |
1712 | if (copy_from_user(buffer, optval, len)) | |
1713 | return -EFAULT; | |
1714 | buffer[len] = '\0'; | |
b3da8757 | 1715 | /* verify the requested LSM is registered */ |
c9353421 | 1716 | if (!set_lsm_of_current(buffer, len)) |
b3da8757 | 1717 | return -ENOENT; |
a69a0684 JJ |
1718 | break; |
1719 | default: | |
1720 | return -ENOSYS; | |
1721 | } | |
1722 | return 0; | |
1723 | } | |
1724 | #endif | |
1725 | ||
20510f2f | 1726 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1727 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1728 | { |
b1d9e6b0 CS |
1729 | int thisrc; |
1730 | int rc = -ENOSYS; | |
1731 | struct security_hook_list *hp; | |
1732 | ||
a69a0684 JJ |
1733 | #ifdef CONFIG_SECURITY_STACKING |
1734 | rc = lsm_task_prctl(option, arg2, arg3, arg4, arg5); | |
1735 | if (rc != -ENOSYS) | |
1736 | return rc; | |
1737 | #endif | |
1738 | ||
b1d9e6b0 CS |
1739 | list_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
1740 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); | |
1741 | if (thisrc != -ENOSYS) { | |
1742 | rc = thisrc; | |
1743 | if (thisrc != 0) | |
1744 | break; | |
1745 | } | |
1746 | } | |
1747 | return rc; | |
20510f2f JM |
1748 | } |
1749 | ||
1750 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1751 | { | |
f25fce3e | 1752 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1753 | } |
1754 | ||
1755 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1756 | { | |
f25fce3e | 1757 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1758 | } |
1759 | ||
8a076191 AD |
1760 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1761 | { | |
b1d9e6b0 | 1762 | *secid = 0; |
f25fce3e | 1763 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1764 | } |
1765 | ||
20510f2f JM |
1766 | int security_msg_msg_alloc(struct msg_msg *msg) |
1767 | { | |
7a90fc39 CS |
1768 | int rc = lsm_msg_msg_alloc(msg); |
1769 | ||
1770 | if (unlikely(rc)) | |
1771 | return rc; | |
1772 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
1773 | if (unlikely(rc)) | |
1774 | security_msg_msg_free(msg); | |
1775 | return rc; | |
20510f2f JM |
1776 | } |
1777 | ||
1778 | void security_msg_msg_free(struct msg_msg *msg) | |
1779 | { | |
f25fce3e | 1780 | call_void_hook(msg_msg_free_security, msg); |
7a90fc39 CS |
1781 | kfree(msg->security); |
1782 | msg->security = NULL; | |
20510f2f JM |
1783 | } |
1784 | ||
1785 | int security_msg_queue_alloc(struct msg_queue *msq) | |
1786 | { | |
7a90fc39 CS |
1787 | int rc = lsm_ipc_alloc(&msq->q_perm); |
1788 | ||
1789 | if (unlikely(rc)) | |
1790 | return rc; | |
1791 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
1792 | if (unlikely(rc)) | |
1793 | security_msg_queue_free(msq); | |
1794 | return rc; | |
20510f2f JM |
1795 | } |
1796 | ||
1797 | void security_msg_queue_free(struct msg_queue *msq) | |
1798 | { | |
7a90fc39 CS |
1799 | struct kern_ipc_perm *kip = &msq->q_perm; |
1800 | ||
f25fce3e | 1801 | call_void_hook(msg_queue_free_security, msq); |
7a90fc39 CS |
1802 | kfree(kip->security); |
1803 | kip->security = NULL; | |
20510f2f JM |
1804 | } |
1805 | ||
1806 | int security_msg_queue_associate(struct msg_queue *msq, int msqflg) | |
1807 | { | |
f25fce3e | 1808 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
1809 | } |
1810 | ||
1811 | int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) | |
1812 | { | |
f25fce3e | 1813 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
1814 | } |
1815 | ||
1816 | int security_msg_queue_msgsnd(struct msg_queue *msq, | |
1817 | struct msg_msg *msg, int msqflg) | |
1818 | { | |
f25fce3e | 1819 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
1820 | } |
1821 | ||
1822 | int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, | |
1823 | struct task_struct *target, long type, int mode) | |
1824 | { | |
f25fce3e | 1825 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
1826 | } |
1827 | ||
1828 | int security_shm_alloc(struct shmid_kernel *shp) | |
1829 | { | |
7a90fc39 CS |
1830 | int rc = lsm_ipc_alloc(&shp->shm_perm); |
1831 | ||
1832 | if (unlikely(rc)) | |
1833 | return rc; | |
1834 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
1835 | if (unlikely(rc)) | |
1836 | security_shm_free(shp); | |
1837 | return rc; | |
20510f2f JM |
1838 | } |
1839 | ||
1840 | void security_shm_free(struct shmid_kernel *shp) | |
1841 | { | |
7a90fc39 CS |
1842 | struct kern_ipc_perm *kip = &shp->shm_perm; |
1843 | ||
f25fce3e | 1844 | call_void_hook(shm_free_security, shp); |
7a90fc39 CS |
1845 | kfree(kip->security); |
1846 | kip->security = NULL; | |
20510f2f JM |
1847 | } |
1848 | ||
1849 | int security_shm_associate(struct shmid_kernel *shp, int shmflg) | |
1850 | { | |
f25fce3e | 1851 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
1852 | } |
1853 | ||
1854 | int security_shm_shmctl(struct shmid_kernel *shp, int cmd) | |
1855 | { | |
f25fce3e | 1856 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
1857 | } |
1858 | ||
1859 | int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) | |
1860 | { | |
f25fce3e | 1861 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
1862 | } |
1863 | ||
1864 | int security_sem_alloc(struct sem_array *sma) | |
1865 | { | |
7a90fc39 CS |
1866 | int rc = lsm_ipc_alloc(&sma->sem_perm); |
1867 | ||
1868 | if (unlikely(rc)) | |
1869 | return rc; | |
1870 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
1871 | if (unlikely(rc)) | |
1872 | security_sem_free(sma); | |
1873 | return rc; | |
20510f2f JM |
1874 | } |
1875 | ||
1876 | void security_sem_free(struct sem_array *sma) | |
1877 | { | |
7a90fc39 CS |
1878 | struct kern_ipc_perm *kip = &sma->sem_perm; |
1879 | ||
f25fce3e | 1880 | call_void_hook(sem_free_security, sma); |
7a90fc39 CS |
1881 | kfree(kip->security); |
1882 | kip->security = NULL; | |
20510f2f JM |
1883 | } |
1884 | ||
1885 | int security_sem_associate(struct sem_array *sma, int semflg) | |
1886 | { | |
f25fce3e | 1887 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
1888 | } |
1889 | ||
1890 | int security_sem_semctl(struct sem_array *sma, int cmd) | |
1891 | { | |
f25fce3e | 1892 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
1893 | } |
1894 | ||
1895 | int security_sem_semop(struct sem_array *sma, struct sembuf *sops, | |
1896 | unsigned nsops, int alter) | |
1897 | { | |
f25fce3e | 1898 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
1899 | } |
1900 | ||
1901 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
1902 | { | |
1903 | if (unlikely(inode && IS_PRIVATE(inode))) | |
1904 | return; | |
f25fce3e | 1905 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
1906 | } |
1907 | EXPORT_SYMBOL(security_d_instantiate); | |
1908 | ||
dcd148a1 CS |
1909 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
1910 | char **value) | |
20510f2f | 1911 | { |
a69a0684 JJ |
1912 | #ifdef CONFIG_SECURITY_STACKING |
1913 | char *speclsm = lsm_of_task(p); | |
1914 | #endif | |
dcd148a1 | 1915 | struct security_hook_list *hp; |
c9353421 JJ |
1916 | int rc; |
1917 | ||
5a1d919f | 1918 | if (strcmp(name, "display_lsm") == 0) { |
c9353421 JJ |
1919 | *value = kstrdup(current->security, GFP_KERNEL); |
1920 | if (*value == NULL) | |
1921 | return -ENOMEM; | |
1922 | return strlen(*value); | |
1923 | } | |
dcd148a1 CS |
1924 | |
1925 | list_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
1926 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1927 | continue; | |
a69a0684 JJ |
1928 | #ifdef CONFIG_SECURITY_STACKING |
1929 | if (!lsm && speclsm && speclsm[0] && strcmp(speclsm, hp->lsm)) | |
1930 | continue; | |
1931 | #endif | |
1932 | rc = hp->hook.getprocattr(p, name, value); | |
1933 | if (rc != -ENOSYS) | |
1934 | return rc; | |
dcd148a1 CS |
1935 | } |
1936 | return -EINVAL; | |
20510f2f JM |
1937 | } |
1938 | ||
dcd148a1 CS |
1939 | int security_setprocattr(const char *lsm, const char *name, void *value, |
1940 | size_t size) | |
20510f2f | 1941 | { |
a69a0684 JJ |
1942 | #ifdef CONFIG_SECURITY_STACKING |
1943 | char *speclsm = lsm_of_task(current); | |
a69a0684 JJ |
1944 | #else |
1945 | char *tvalue; | |
1946 | #endif | |
dcd148a1 | 1947 | struct security_hook_list *hp; |
a69a0684 | 1948 | int rc; |
a69a0684 | 1949 | |
36788bfe CIK |
1950 | if (!size) |
1951 | return -EINVAL; | |
1952 | ||
5a1d919f | 1953 | if (strcmp(name, "display_lsm") == 0) { |
c9353421 JJ |
1954 | #ifdef CONFIG_SECURITY_STACKING |
1955 | if (set_lsm_of_current(value, size)) | |
1956 | return size; | |
1957 | #endif | |
1958 | return -EINVAL; | |
a69a0684 | 1959 | } |
dcd148a1 CS |
1960 | |
1961 | list_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
a69a0684 JJ |
1962 | #ifdef CONFIG_SECURITY_STACKING |
1963 | if (!lsm && speclsm && speclsm[0] && strcmp(speclsm, hp->lsm)) | |
dcd148a1 | 1964 | continue; |
a69a0684 JJ |
1965 | #endif |
1966 | rc = hp->hook.setprocattr(name, value, size); | |
1967 | if (rc) | |
1968 | return rc; | |
dcd148a1 CS |
1969 | } |
1970 | return -EINVAL; | |
20510f2f JM |
1971 | } |
1972 | ||
1973 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
1974 | { | |
f25fce3e | 1975 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 1976 | } |
20510f2f | 1977 | |
746df9b5 DQ |
1978 | int security_ismaclabel(const char *name) |
1979 | { | |
f25fce3e | 1980 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
1981 | } |
1982 | EXPORT_SYMBOL(security_ismaclabel); | |
1983 | ||
20510f2f JM |
1984 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
1985 | { | |
b1d9e6b0 CS |
1986 | return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata, |
1987 | seclen); | |
20510f2f JM |
1988 | } |
1989 | EXPORT_SYMBOL(security_secid_to_secctx); | |
1990 | ||
7bf570dc | 1991 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 1992 | { |
b1d9e6b0 | 1993 | *secid = 0; |
f25fce3e | 1994 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
1995 | } |
1996 | EXPORT_SYMBOL(security_secctx_to_secid); | |
1997 | ||
20510f2f JM |
1998 | void security_release_secctx(char *secdata, u32 seclen) |
1999 | { | |
a69a0684 JJ |
2000 | #ifdef CONFIG_SECURITY_STACKING |
2001 | char *speclsm = lsm_of_task(current); | |
2002 | #endif | |
2003 | struct security_hook_list *hp; | |
2004 | ||
2005 | list_for_each_entry(hp, &security_hook_heads.release_secctx, list) { | |
2006 | #ifdef CONFIG_SECURITY_STACKING | |
2007 | if (speclsm[0] && strcmp(hp->lsm, speclsm)) | |
2008 | continue; | |
2009 | #endif | |
2010 | hp->hook.release_secctx(secdata, seclen); | |
2011 | break; | |
2012 | } | |
20510f2f JM |
2013 | } |
2014 | EXPORT_SYMBOL(security_release_secctx); | |
2015 | ||
6f3be9f5 AG |
2016 | void security_inode_invalidate_secctx(struct inode *inode) |
2017 | { | |
2018 | call_void_hook(inode_invalidate_secctx, inode); | |
2019 | } | |
2020 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2021 | ||
1ee65e37 DQ |
2022 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2023 | { | |
f25fce3e | 2024 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2025 | } |
2026 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2027 | ||
2028 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2029 | { | |
f25fce3e | 2030 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2031 | } |
2032 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2033 | ||
2034 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
2035 | { | |
b1d9e6b0 | 2036 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
2037 | } |
2038 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2039 | ||
20510f2f JM |
2040 | #ifdef CONFIG_SECURITY_NETWORK |
2041 | ||
3610cda5 | 2042 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2043 | { |
f25fce3e | 2044 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2045 | } |
2046 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2047 | ||
2048 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2049 | { | |
f25fce3e | 2050 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2051 | } |
2052 | EXPORT_SYMBOL(security_unix_may_send); | |
2053 | ||
2054 | int security_socket_create(int family, int type, int protocol, int kern) | |
2055 | { | |
f25fce3e | 2056 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2057 | } |
2058 | ||
2059 | int security_socket_post_create(struct socket *sock, int family, | |
2060 | int type, int protocol, int kern) | |
2061 | { | |
f25fce3e | 2062 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2063 | protocol, kern); |
2064 | } | |
2065 | ||
2066 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) | |
2067 | { | |
f25fce3e | 2068 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2069 | } |
2070 | ||
2071 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2072 | { | |
f25fce3e | 2073 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2074 | } |
2075 | ||
2076 | int security_socket_listen(struct socket *sock, int backlog) | |
2077 | { | |
f25fce3e | 2078 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2079 | } |
2080 | ||
2081 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2082 | { | |
f25fce3e | 2083 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2084 | } |
2085 | ||
20510f2f JM |
2086 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2087 | { | |
f25fce3e | 2088 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2089 | } |
2090 | ||
2091 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2092 | int size, int flags) | |
2093 | { | |
f25fce3e | 2094 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2095 | } |
2096 | ||
2097 | int security_socket_getsockname(struct socket *sock) | |
2098 | { | |
f25fce3e | 2099 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2100 | } |
2101 | ||
2102 | int security_socket_getpeername(struct socket *sock) | |
2103 | { | |
f25fce3e | 2104 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2105 | } |
2106 | ||
2107 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2108 | { | |
f25fce3e | 2109 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2110 | } |
2111 | ||
2112 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2113 | { | |
f25fce3e | 2114 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2115 | } |
2116 | ||
2117 | int security_socket_shutdown(struct socket *sock, int how) | |
2118 | { | |
f25fce3e | 2119 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2120 | } |
2121 | ||
2122 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2123 | { | |
f25fce3e | 2124 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2125 | } |
2126 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2127 | ||
2128 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2129 | int __user *optlen, unsigned len) | |
2130 | { | |
8e42f92b JJ |
2131 | #ifdef CONFIG_SECURITY_STACKING |
2132 | struct security_hook_list *hp; | |
2133 | char *lsm = lsm_of_task(current); | |
2134 | ||
2135 | list_for_each_entry(hp, &security_hook_heads.socket_getpeersec_stream, | |
2136 | list) { | |
2137 | if (!lsm || !lsm[0] || !strcmp(lsm, hp->lsm)) | |
2138 | return hp->hook.socket_getpeersec_stream(sock, optval, | |
2139 | optlen, len); | |
2140 | } | |
2141 | return -ENOPROTOOPT; | |
2142 | #else | |
b1d9e6b0 CS |
2143 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
2144 | optval, optlen, len); | |
8e42f92b | 2145 | #endif |
20510f2f JM |
2146 | } |
2147 | ||
2148 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
2149 | { | |
e308fd3b JB |
2150 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
2151 | skb, secid); | |
20510f2f JM |
2152 | } |
2153 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2154 | ||
2155 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2156 | { | |
7a90fc39 CS |
2157 | int rc = lsm_sock_alloc(sk, priority); |
2158 | ||
2159 | if (unlikely(rc)) | |
2160 | return rc; | |
2161 | rc = call_int_hook(sk_alloc_security, 0, sk, family, priority); | |
2162 | if (unlikely(rc)) | |
2163 | security_sk_free(sk); | |
2164 | return rc; | |
20510f2f JM |
2165 | } |
2166 | ||
2167 | void security_sk_free(struct sock *sk) | |
2168 | { | |
f25fce3e | 2169 | call_void_hook(sk_free_security, sk); |
7a90fc39 CS |
2170 | kfree(sk->sk_security); |
2171 | sk->sk_security = NULL; | |
20510f2f JM |
2172 | } |
2173 | ||
2174 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2175 | { | |
f25fce3e | 2176 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2177 | } |
6230c9b4 | 2178 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f JM |
2179 | |
2180 | void security_sk_classify_flow(struct sock *sk, struct flowi *fl) | |
2181 | { | |
f25fce3e | 2182 | call_void_hook(sk_getsecid, sk, &fl->flowi_secid); |
20510f2f JM |
2183 | } |
2184 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2185 | ||
2186 | void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) | |
2187 | { | |
f25fce3e | 2188 | call_void_hook(req_classify_flow, req, fl); |
20510f2f JM |
2189 | } |
2190 | EXPORT_SYMBOL(security_req_classify_flow); | |
2191 | ||
2192 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2193 | { | |
f25fce3e | 2194 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2195 | } |
2196 | EXPORT_SYMBOL(security_sock_graft); | |
2197 | ||
2198 | int security_inet_conn_request(struct sock *sk, | |
2199 | struct sk_buff *skb, struct request_sock *req) | |
2200 | { | |
f25fce3e | 2201 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2202 | } |
2203 | EXPORT_SYMBOL(security_inet_conn_request); | |
2204 | ||
2205 | void security_inet_csk_clone(struct sock *newsk, | |
2206 | const struct request_sock *req) | |
2207 | { | |
f25fce3e | 2208 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2209 | } |
2210 | ||
2211 | void security_inet_conn_established(struct sock *sk, | |
2212 | struct sk_buff *skb) | |
2213 | { | |
f25fce3e | 2214 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f JM |
2215 | } |
2216 | ||
2606fd1f EP |
2217 | int security_secmark_relabel_packet(u32 secid) |
2218 | { | |
f25fce3e | 2219 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2220 | } |
2221 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2222 | ||
2223 | void security_secmark_refcount_inc(void) | |
2224 | { | |
f25fce3e | 2225 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2226 | } |
2227 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2228 | ||
2229 | void security_secmark_refcount_dec(void) | |
2230 | { | |
f25fce3e | 2231 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2232 | } |
2233 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2234 | ||
5dbbaf2d PM |
2235 | int security_tun_dev_alloc_security(void **security) |
2236 | { | |
f25fce3e | 2237 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2238 | } |
2239 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2240 | ||
2241 | void security_tun_dev_free_security(void *security) | |
2242 | { | |
f25fce3e | 2243 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2244 | } |
2245 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2246 | ||
2b980dbd PM |
2247 | int security_tun_dev_create(void) |
2248 | { | |
f25fce3e | 2249 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2250 | } |
2251 | EXPORT_SYMBOL(security_tun_dev_create); | |
2252 | ||
5dbbaf2d | 2253 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2254 | { |
f25fce3e | 2255 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2256 | } |
5dbbaf2d | 2257 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2258 | |
5dbbaf2d | 2259 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2260 | { |
f25fce3e | 2261 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2262 | } |
2263 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2264 | ||
5dbbaf2d PM |
2265 | int security_tun_dev_open(void *security) |
2266 | { | |
f25fce3e | 2267 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2268 | } |
2269 | EXPORT_SYMBOL(security_tun_dev_open); | |
2270 | ||
20510f2f JM |
2271 | #endif /* CONFIG_SECURITY_NETWORK */ |
2272 | ||
d291f1a6 DJ |
2273 | #ifdef CONFIG_SECURITY_INFINIBAND |
2274 | ||
2275 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2276 | { | |
2277 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2278 | } | |
2279 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2280 | ||
47a2b338 DJ |
2281 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2282 | { | |
2283 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2284 | } | |
2285 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2286 | ||
d291f1a6 DJ |
2287 | int security_ib_alloc_security(void **sec) |
2288 | { | |
2289 | return call_int_hook(ib_alloc_security, 0, sec); | |
2290 | } | |
2291 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2292 | ||
2293 | void security_ib_free_security(void *sec) | |
2294 | { | |
2295 | call_void_hook(ib_free_security, sec); | |
2296 | } | |
2297 | EXPORT_SYMBOL(security_ib_free_security); | |
2298 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2299 | ||
20510f2f JM |
2300 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2301 | ||
52a4c640 NA |
2302 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2303 | struct xfrm_user_sec_ctx *sec_ctx, | |
2304 | gfp_t gfp) | |
20510f2f | 2305 | { |
f25fce3e | 2306 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2307 | } |
2308 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2309 | ||
03e1ad7b PM |
2310 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2311 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2312 | { |
f25fce3e | 2313 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2314 | } |
2315 | ||
03e1ad7b | 2316 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2317 | { |
f25fce3e | 2318 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2319 | } |
2320 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2321 | ||
03e1ad7b | 2322 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2323 | { |
f25fce3e | 2324 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2325 | } |
2326 | ||
2e5aa866 PM |
2327 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2328 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2329 | { |
f25fce3e | 2330 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2331 | } |
2332 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2333 | ||
2334 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2335 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2336 | { | |
f25fce3e | 2337 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2338 | } |
2339 | ||
2340 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2341 | { | |
f25fce3e | 2342 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2343 | } |
2344 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2345 | ||
2346 | void security_xfrm_state_free(struct xfrm_state *x) | |
2347 | { | |
f25fce3e | 2348 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2349 | } |
2350 | ||
03e1ad7b | 2351 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
20510f2f | 2352 | { |
f25fce3e | 2353 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
20510f2f JM |
2354 | } |
2355 | ||
2356 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 DM |
2357 | struct xfrm_policy *xp, |
2358 | const struct flowi *fl) | |
20510f2f | 2359 | { |
b1d9e6b0 CS |
2360 | struct security_hook_list *hp; |
2361 | int rc = 1; | |
2362 | ||
2363 | /* | |
2364 | * Since this function is expected to return 0 or 1, the judgment | |
2365 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2366 | * we can use the first LSM's judgment because currently only SELinux | |
2367 | * supplies this call. | |
2368 | * | |
2369 | * For speed optimization, we explicitly break the loop rather than | |
2370 | * using the macro | |
2371 | */ | |
2372 | list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, | |
2373 | list) { | |
2374 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl); | |
2375 | break; | |
2376 | } | |
2377 | return rc; | |
20510f2f JM |
2378 | } |
2379 | ||
2380 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2381 | { | |
f25fce3e | 2382 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2383 | } |
2384 | ||
2385 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) | |
2386 | { | |
f25fce3e CS |
2387 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, |
2388 | 0); | |
20510f2f JM |
2389 | |
2390 | BUG_ON(rc); | |
2391 | } | |
2392 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2393 | ||
2394 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2395 | ||
2396 | #ifdef CONFIG_KEYS | |
2397 | ||
d84f4f99 DH |
2398 | int security_key_alloc(struct key *key, const struct cred *cred, |
2399 | unsigned long flags) | |
20510f2f | 2400 | { |
7a90fc39 CS |
2401 | int rc = lsm_key_alloc(key); |
2402 | ||
2403 | if (unlikely(rc)) | |
2404 | return rc; | |
2405 | rc = call_int_hook(key_alloc, 0, key, cred, flags); | |
2406 | if (unlikely(rc)) | |
2407 | security_key_free(key); | |
2408 | return rc; | |
20510f2f JM |
2409 | } |
2410 | ||
2411 | void security_key_free(struct key *key) | |
2412 | { | |
f25fce3e | 2413 | call_void_hook(key_free, key); |
7a90fc39 CS |
2414 | kfree(key->security); |
2415 | key->security = NULL; | |
20510f2f JM |
2416 | } |
2417 | ||
2418 | int security_key_permission(key_ref_t key_ref, | |
f5895943 | 2419 | const struct cred *cred, unsigned perm) |
20510f2f | 2420 | { |
f25fce3e | 2421 | return call_int_hook(key_permission, 0, key_ref, cred, perm); |
20510f2f JM |
2422 | } |
2423 | ||
70a5bb72 DH |
2424 | int security_key_getsecurity(struct key *key, char **_buffer) |
2425 | { | |
b1d9e6b0 | 2426 | *_buffer = NULL; |
f25fce3e | 2427 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2428 | } |
2429 | ||
20510f2f | 2430 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2431 | |
2432 | #ifdef CONFIG_AUDIT | |
2433 | ||
2434 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2435 | { | |
f25fce3e | 2436 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
03d37d25 AD |
2437 | } |
2438 | ||
2439 | int security_audit_rule_known(struct audit_krule *krule) | |
2440 | { | |
f25fce3e | 2441 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2442 | } |
2443 | ||
2444 | void security_audit_rule_free(void *lsmrule) | |
2445 | { | |
f25fce3e | 2446 | call_void_hook(audit_rule_free, lsmrule); |
03d37d25 AD |
2447 | } |
2448 | ||
2449 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, | |
2450 | struct audit_context *actx) | |
2451 | { | |
f25fce3e CS |
2452 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule, |
2453 | actx); | |
03d37d25 | 2454 | } |
b1d9e6b0 | 2455 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2456 | |
2457 | #ifdef CONFIG_BPF_SYSCALL | |
2458 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2459 | { | |
2460 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2461 | } | |
2462 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2463 | { | |
2464 | return call_int_hook(bpf_map, 0, map, fmode); | |
2465 | } | |
2466 | int security_bpf_prog(struct bpf_prog *prog) | |
2467 | { | |
2468 | return call_int_hook(bpf_prog, 0, prog); | |
2469 | } | |
2470 | int security_bpf_map_alloc(struct bpf_map *map) | |
2471 | { | |
2472 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2473 | } | |
2474 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2475 | { | |
2476 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2477 | } | |
2478 | void security_bpf_map_free(struct bpf_map *map) | |
2479 | { | |
2480 | call_void_hook(bpf_map_free_security, map); | |
2481 | } | |
2482 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2483 | { | |
2484 | call_void_hook(bpf_prog_free_security, aux); | |
2485 | } | |
2486 | #endif /* CONFIG_BPF_SYSCALL */ |