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