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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Security plug functions | |
4 | * | |
5 | * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> | |
6 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
7 | * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> | |
d291f1a6 | 8 | * Copyright (C) 2016 Mellanox Technologies |
1da177e4 LT |
9 | */ |
10 | ||
9b8c7c14 KC |
11 | #define pr_fmt(fmt) "LSM: " fmt |
12 | ||
afdb09c7 | 13 | #include <linux/bpf.h> |
c59ede7b | 14 | #include <linux/capability.h> |
d47be3df | 15 | #include <linux/dcache.h> |
876979c9 | 16 | #include <linux/export.h> |
1da177e4 LT |
17 | #include <linux/init.h> |
18 | #include <linux/kernel.h> | |
3c4ed7bd | 19 | #include <linux/lsm_hooks.h> |
f381c272 | 20 | #include <linux/integrity.h> |
6c21a7fb | 21 | #include <linux/ima.h> |
3e1be52d | 22 | #include <linux/evm.h> |
40401530 | 23 | #include <linux/fsnotify.h> |
8b3ec681 AV |
24 | #include <linux/mman.h> |
25 | #include <linux/mount.h> | |
26 | #include <linux/personality.h> | |
75331a59 | 27 | #include <linux/backing-dev.h> |
3bb857e4 | 28 | #include <linux/string.h> |
ecd5f82e | 29 | #include <linux/msg.h> |
40401530 | 30 | #include <net/flow.h> |
1da177e4 | 31 | |
823eb1cc | 32 | #define MAX_LSM_EVM_XATTR 2 |
1da177e4 | 33 | |
2d4d5119 KC |
34 | /* How many LSMs were built into the kernel? */ |
35 | #define LSM_COUNT (__end_lsm_info - __start_lsm_info) | |
36 | ||
3dfc9b02 | 37 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
8f408ab6 DJ |
38 | static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain); |
39 | ||
33bf60ca | 40 | static struct kmem_cache *lsm_file_cache; |
afb1cbe3 | 41 | static struct kmem_cache *lsm_inode_cache; |
33bf60ca | 42 | |
d69dece5 | 43 | char *lsm_names; |
bbd3662a CS |
44 | static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init; |
45 | ||
076c54c5 | 46 | /* Boot-time LSM user choice */ |
79f7865d | 47 | static __initdata const char *chosen_lsm_order; |
5ef4e419 | 48 | static __initdata const char *chosen_major_lsm; |
1da177e4 | 49 | |
13e735c0 KC |
50 | static __initconst const char * const builtin_lsm_order = CONFIG_LSM; |
51 | ||
2d4d5119 KC |
52 | /* Ordered list of LSMs to initialize. */ |
53 | static __initdata struct lsm_info **ordered_lsms; | |
14bd99c8 | 54 | static __initdata struct lsm_info *exclusive; |
2d4d5119 | 55 | |
9b8c7c14 KC |
56 | static __initdata bool debug; |
57 | #define init_debug(...) \ | |
58 | do { \ | |
59 | if (debug) \ | |
60 | pr_info(__VA_ARGS__); \ | |
61 | } while (0) | |
62 | ||
f4941d75 KC |
63 | static bool __init is_enabled(struct lsm_info *lsm) |
64 | { | |
a8027fb0 KC |
65 | if (!lsm->enabled) |
66 | return false; | |
f4941d75 | 67 | |
a8027fb0 | 68 | return *lsm->enabled; |
f4941d75 KC |
69 | } |
70 | ||
71 | /* Mark an LSM's enabled flag. */ | |
72 | static int lsm_enabled_true __initdata = 1; | |
73 | static int lsm_enabled_false __initdata = 0; | |
74 | static void __init set_enabled(struct lsm_info *lsm, bool enabled) | |
75 | { | |
76 | /* | |
77 | * When an LSM hasn't configured an enable variable, we can use | |
78 | * a hard-coded location for storing the default enabled state. | |
79 | */ | |
80 | if (!lsm->enabled) { | |
81 | if (enabled) | |
82 | lsm->enabled = &lsm_enabled_true; | |
83 | else | |
84 | lsm->enabled = &lsm_enabled_false; | |
85 | } else if (lsm->enabled == &lsm_enabled_true) { | |
86 | if (!enabled) | |
87 | lsm->enabled = &lsm_enabled_false; | |
88 | } else if (lsm->enabled == &lsm_enabled_false) { | |
89 | if (enabled) | |
90 | lsm->enabled = &lsm_enabled_true; | |
91 | } else { | |
92 | *lsm->enabled = enabled; | |
93 | } | |
94 | } | |
95 | ||
2d4d5119 KC |
96 | /* Is an LSM already listed in the ordered LSMs list? */ |
97 | static bool __init exists_ordered_lsm(struct lsm_info *lsm) | |
98 | { | |
99 | struct lsm_info **check; | |
100 | ||
101 | for (check = ordered_lsms; *check; check++) | |
102 | if (*check == lsm) | |
103 | return true; | |
104 | ||
105 | return false; | |
106 | } | |
107 | ||
108 | /* Append an LSM to the list of ordered LSMs to initialize. */ | |
109 | static int last_lsm __initdata; | |
110 | static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from) | |
111 | { | |
112 | /* Ignore duplicate selections. */ | |
113 | if (exists_ordered_lsm(lsm)) | |
114 | return; | |
115 | ||
116 | if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from)) | |
117 | return; | |
118 | ||
a8027fb0 KC |
119 | /* Enable this LSM, if it is not already set. */ |
120 | if (!lsm->enabled) | |
121 | lsm->enabled = &lsm_enabled_true; | |
2d4d5119 | 122 | ordered_lsms[last_lsm++] = lsm; |
a8027fb0 | 123 | |
2d4d5119 KC |
124 | init_debug("%s ordering: %s (%sabled)\n", from, lsm->name, |
125 | is_enabled(lsm) ? "en" : "dis"); | |
126 | } | |
127 | ||
f4941d75 KC |
128 | /* Is an LSM allowed to be initialized? */ |
129 | static bool __init lsm_allowed(struct lsm_info *lsm) | |
130 | { | |
131 | /* Skip if the LSM is disabled. */ | |
132 | if (!is_enabled(lsm)) | |
133 | return false; | |
134 | ||
14bd99c8 KC |
135 | /* Not allowed if another exclusive LSM already initialized. */ |
136 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) { | |
137 | init_debug("exclusive disabled: %s\n", lsm->name); | |
138 | return false; | |
139 | } | |
140 | ||
f4941d75 KC |
141 | return true; |
142 | } | |
143 | ||
bbd3662a CS |
144 | static void __init lsm_set_blob_size(int *need, int *lbs) |
145 | { | |
146 | int offset; | |
147 | ||
148 | if (*need > 0) { | |
149 | offset = *lbs; | |
150 | *lbs += *need; | |
151 | *need = offset; | |
152 | } | |
153 | } | |
154 | ||
155 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
156 | { | |
157 | if (!needed) | |
158 | return; | |
159 | ||
160 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 161 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
162 | /* |
163 | * The inode blob gets an rcu_head in addition to | |
164 | * what the modules might need. | |
165 | */ | |
166 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
167 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
168 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
169 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
170 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
f4ad8f2c | 171 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
172 | } |
173 | ||
d8e9bbd4 KC |
174 | /* Prepare LSM for initialization. */ |
175 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
176 | { |
177 | int enabled = lsm_allowed(lsm); | |
178 | ||
179 | /* Record enablement (to handle any following exclusive LSMs). */ | |
180 | set_enabled(lsm, enabled); | |
181 | ||
d8e9bbd4 | 182 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 183 | if (enabled) { |
14bd99c8 KC |
184 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
185 | exclusive = lsm; | |
186 | init_debug("exclusive chosen: %s\n", lsm->name); | |
187 | } | |
bbd3662a CS |
188 | |
189 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
190 | } |
191 | } | |
192 | ||
193 | /* Initialize a given LSM, if it is enabled. */ | |
194 | static void __init initialize_lsm(struct lsm_info *lsm) | |
195 | { | |
196 | if (is_enabled(lsm)) { | |
197 | int ret; | |
14bd99c8 | 198 | |
f4941d75 KC |
199 | init_debug("initializing %s\n", lsm->name); |
200 | ret = lsm->init(); | |
201 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
202 | } | |
203 | } | |
204 | ||
13e735c0 | 205 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 206 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
207 | { |
208 | struct lsm_info *lsm; | |
13e735c0 KC |
209 | char *sep, *name, *next; |
210 | ||
e2bc445b KC |
211 | /* LSM_ORDER_FIRST is always first. */ |
212 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
213 | if (lsm->order == LSM_ORDER_FIRST) | |
214 | append_ordered_lsm(lsm, "first"); | |
215 | } | |
216 | ||
7e611486 | 217 | /* Process "security=", if given. */ |
7e611486 KC |
218 | if (chosen_major_lsm) { |
219 | struct lsm_info *major; | |
220 | ||
221 | /* | |
222 | * To match the original "security=" behavior, this | |
223 | * explicitly does NOT fallback to another Legacy Major | |
224 | * if the selected one was separately disabled: disable | |
225 | * all non-matching Legacy Major LSMs. | |
226 | */ | |
227 | for (major = __start_lsm_info; major < __end_lsm_info; | |
228 | major++) { | |
229 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
230 | strcmp(major->name, chosen_major_lsm) != 0) { | |
231 | set_enabled(major, false); | |
232 | init_debug("security=%s disabled: %s\n", | |
233 | chosen_major_lsm, major->name); | |
234 | } | |
235 | } | |
236 | } | |
5ef4e419 | 237 | |
13e735c0 KC |
238 | sep = kstrdup(order, GFP_KERNEL); |
239 | next = sep; | |
240 | /* Walk the list, looking for matching LSMs. */ | |
241 | while ((name = strsep(&next, ",")) != NULL) { | |
242 | bool found = false; | |
243 | ||
244 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
245 | if (lsm->order == LSM_ORDER_MUTABLE && |
246 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
247 | append_ordered_lsm(lsm, origin); |
248 | found = true; | |
249 | } | |
250 | } | |
251 | ||
252 | if (!found) | |
253 | init_debug("%s ignored: %s\n", origin, name); | |
657d910b | 254 | } |
c91d8106 CS |
255 | |
256 | /* Process "security=", if given. */ | |
257 | if (chosen_major_lsm) { | |
258 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
259 | if (exists_ordered_lsm(lsm)) | |
260 | continue; | |
261 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
262 | append_ordered_lsm(lsm, "security="); | |
263 | } | |
264 | } | |
265 | ||
266 | /* Disable all LSMs not in the ordered list. */ | |
267 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
268 | if (exists_ordered_lsm(lsm)) | |
269 | continue; | |
270 | set_enabled(lsm, false); | |
271 | init_debug("%s disabled: %s\n", origin, lsm->name); | |
272 | } | |
273 | ||
13e735c0 | 274 | kfree(sep); |
657d910b KC |
275 | } |
276 | ||
1cfb2a51 TH |
277 | static void __init lsm_early_cred(struct cred *cred); |
278 | static void __init lsm_early_task(struct task_struct *task); | |
279 | ||
2d4d5119 KC |
280 | static void __init ordered_lsm_init(void) |
281 | { | |
282 | struct lsm_info **lsm; | |
283 | ||
284 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
285 | GFP_KERNEL); | |
286 | ||
89a9684e KC |
287 | if (chosen_lsm_order) { |
288 | if (chosen_major_lsm) { | |
289 | pr_info("security= is ignored because it is superseded by lsm=\n"); | |
290 | chosen_major_lsm = NULL; | |
291 | } | |
79f7865d | 292 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 293 | } else |
79f7865d | 294 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
295 | |
296 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
297 | prepare_lsm(*lsm); |
298 | ||
bbd3662a | 299 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
33bf60ca | 300 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); |
afb1cbe3 | 301 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); |
ecd5f82e CS |
302 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); |
303 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
f4ad8f2c | 304 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); |
33bf60ca CS |
305 | |
306 | /* | |
307 | * Create any kmem_caches needed for blobs | |
308 | */ | |
309 | if (blob_sizes.lbs_file) | |
310 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
311 | blob_sizes.lbs_file, 0, | |
312 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
313 | if (blob_sizes.lbs_inode) |
314 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
315 | blob_sizes.lbs_inode, 0, | |
316 | SLAB_PANIC, NULL); | |
bbd3662a | 317 | |
1cfb2a51 TH |
318 | lsm_early_cred((struct cred *) current->cred); |
319 | lsm_early_task(current); | |
d8e9bbd4 KC |
320 | for (lsm = ordered_lsms; *lsm; lsm++) |
321 | initialize_lsm(*lsm); | |
2d4d5119 KC |
322 | |
323 | kfree(ordered_lsms); | |
324 | } | |
325 | ||
1da177e4 LT |
326 | /** |
327 | * security_init - initializes the security framework | |
328 | * | |
329 | * This should be called early in the kernel initialization sequence. | |
330 | */ | |
331 | int __init security_init(void) | |
332 | { | |
3dfc9b02 | 333 | int i; |
df0ce173 | 334 | struct hlist_head *list = (struct hlist_head *) &security_hook_heads; |
3dfc9b02 | 335 | |
98d29170 KC |
336 | pr_info("Security Framework initializing\n"); |
337 | ||
df0ce173 | 338 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head); |
3dfc9b02 | 339 | i++) |
df0ce173 | 340 | INIT_HLIST_HEAD(&list[i]); |
1da177e4 | 341 | |
657d910b KC |
342 | /* Load LSMs in specified order. */ |
343 | ordered_lsm_init(); | |
344 | ||
1da177e4 LT |
345 | return 0; |
346 | } | |
347 | ||
076c54c5 | 348 | /* Save user chosen LSM */ |
5ef4e419 | 349 | static int __init choose_major_lsm(char *str) |
076c54c5 | 350 | { |
5ef4e419 | 351 | chosen_major_lsm = str; |
076c54c5 AD |
352 | return 1; |
353 | } | |
5ef4e419 | 354 | __setup("security=", choose_major_lsm); |
076c54c5 | 355 | |
79f7865d KC |
356 | /* Explicitly choose LSM initialization order. */ |
357 | static int __init choose_lsm_order(char *str) | |
358 | { | |
359 | chosen_lsm_order = str; | |
360 | return 1; | |
361 | } | |
362 | __setup("lsm=", choose_lsm_order); | |
363 | ||
9b8c7c14 KC |
364 | /* Enable LSM order debugging. */ |
365 | static int __init enable_debug(char *str) | |
366 | { | |
367 | debug = true; | |
368 | return 1; | |
369 | } | |
370 | __setup("lsm.debug", enable_debug); | |
371 | ||
3bb857e4 MS |
372 | static bool match_last_lsm(const char *list, const char *lsm) |
373 | { | |
374 | const char *last; | |
375 | ||
376 | if (WARN_ON(!list || !lsm)) | |
377 | return false; | |
378 | last = strrchr(list, ','); | |
379 | if (last) | |
380 | /* Pass the comma, strcmp() will check for '\0' */ | |
381 | last++; | |
382 | else | |
383 | last = list; | |
384 | return !strcmp(last, lsm); | |
385 | } | |
386 | ||
d69dece5 CS |
387 | static int lsm_append(char *new, char **result) |
388 | { | |
389 | char *cp; | |
390 | ||
391 | if (*result == NULL) { | |
392 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
393 | if (*result == NULL) |
394 | return -ENOMEM; | |
d69dece5 | 395 | } else { |
3bb857e4 MS |
396 | /* Check if it is the last registered name */ |
397 | if (match_last_lsm(*result, new)) | |
398 | return 0; | |
d69dece5 CS |
399 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
400 | if (cp == NULL) | |
401 | return -ENOMEM; | |
402 | kfree(*result); | |
403 | *result = cp; | |
404 | } | |
405 | return 0; | |
406 | } | |
407 | ||
d69dece5 CS |
408 | /** |
409 | * security_add_hooks - Add a modules hooks to the hook lists. | |
410 | * @hooks: the hooks to add | |
411 | * @count: the number of hooks to add | |
412 | * @lsm: the name of the security module | |
413 | * | |
414 | * Each LSM has to register its hooks with the infrastructure. | |
415 | */ | |
416 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
417 | char *lsm) | |
418 | { | |
419 | int i; | |
420 | ||
421 | for (i = 0; i < count; i++) { | |
422 | hooks[i].lsm = lsm; | |
df0ce173 | 423 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
d69dece5 CS |
424 | } |
425 | if (lsm_append(lsm, &lsm_names) < 0) | |
426 | panic("%s - Cannot get early memory.\n", __func__); | |
427 | } | |
428 | ||
8f408ab6 DJ |
429 | int call_lsm_notifier(enum lsm_event event, void *data) |
430 | { | |
431 | return atomic_notifier_call_chain(&lsm_notifier_chain, event, data); | |
432 | } | |
433 | EXPORT_SYMBOL(call_lsm_notifier); | |
434 | ||
435 | int register_lsm_notifier(struct notifier_block *nb) | |
436 | { | |
437 | return atomic_notifier_chain_register(&lsm_notifier_chain, nb); | |
438 | } | |
439 | EXPORT_SYMBOL(register_lsm_notifier); | |
440 | ||
441 | int unregister_lsm_notifier(struct notifier_block *nb) | |
442 | { | |
443 | return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb); | |
444 | } | |
445 | EXPORT_SYMBOL(unregister_lsm_notifier); | |
446 | ||
bbd3662a CS |
447 | /** |
448 | * lsm_cred_alloc - allocate a composite cred blob | |
449 | * @cred: the cred that needs a blob | |
450 | * @gfp: allocation type | |
451 | * | |
452 | * Allocate the cred blob for all the modules | |
453 | * | |
454 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
455 | */ | |
456 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
457 | { | |
458 | if (blob_sizes.lbs_cred == 0) { | |
459 | cred->security = NULL; | |
460 | return 0; | |
461 | } | |
462 | ||
463 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
464 | if (cred->security == NULL) | |
465 | return -ENOMEM; | |
466 | return 0; | |
467 | } | |
468 | ||
469 | /** | |
470 | * lsm_early_cred - during initialization allocate a composite cred blob | |
471 | * @cred: the cred that needs a blob | |
472 | * | |
1cfb2a51 | 473 | * Allocate the cred blob for all the modules |
bbd3662a | 474 | */ |
1cfb2a51 | 475 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 476 | { |
1cfb2a51 | 477 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 478 | |
bbd3662a CS |
479 | if (rc) |
480 | panic("%s: Early cred alloc failed.\n", __func__); | |
481 | } | |
482 | ||
33bf60ca CS |
483 | /** |
484 | * lsm_file_alloc - allocate a composite file blob | |
485 | * @file: the file that needs a blob | |
486 | * | |
487 | * Allocate the file blob for all the modules | |
488 | * | |
489 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
490 | */ | |
491 | static int lsm_file_alloc(struct file *file) | |
492 | { | |
493 | if (!lsm_file_cache) { | |
494 | file->f_security = NULL; | |
495 | return 0; | |
496 | } | |
497 | ||
498 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
499 | if (file->f_security == NULL) | |
500 | return -ENOMEM; | |
501 | return 0; | |
502 | } | |
503 | ||
afb1cbe3 CS |
504 | /** |
505 | * lsm_inode_alloc - allocate a composite inode blob | |
506 | * @inode: the inode that needs a blob | |
507 | * | |
508 | * Allocate the inode blob for all the modules | |
509 | * | |
510 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
511 | */ | |
512 | int lsm_inode_alloc(struct inode *inode) | |
513 | { | |
514 | if (!lsm_inode_cache) { | |
515 | inode->i_security = NULL; | |
516 | return 0; | |
517 | } | |
518 | ||
519 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
520 | if (inode->i_security == NULL) | |
521 | return -ENOMEM; | |
522 | return 0; | |
523 | } | |
524 | ||
f4ad8f2c CS |
525 | /** |
526 | * lsm_task_alloc - allocate a composite task blob | |
527 | * @task: the task that needs a blob | |
528 | * | |
529 | * Allocate the task blob for all the modules | |
530 | * | |
531 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
532 | */ | |
3e8c7367 | 533 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c CS |
534 | { |
535 | if (blob_sizes.lbs_task == 0) { | |
536 | task->security = NULL; | |
537 | return 0; | |
538 | } | |
539 | ||
540 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
541 | if (task->security == NULL) | |
542 | return -ENOMEM; | |
543 | return 0; | |
544 | } | |
545 | ||
ecd5f82e CS |
546 | /** |
547 | * lsm_ipc_alloc - allocate a composite ipc blob | |
548 | * @kip: the ipc that needs a blob | |
549 | * | |
550 | * Allocate the ipc blob for all the modules | |
551 | * | |
552 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
553 | */ | |
3e8c7367 | 554 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
555 | { |
556 | if (blob_sizes.lbs_ipc == 0) { | |
557 | kip->security = NULL; | |
558 | return 0; | |
559 | } | |
560 | ||
561 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
562 | if (kip->security == NULL) | |
563 | return -ENOMEM; | |
564 | return 0; | |
565 | } | |
566 | ||
567 | /** | |
568 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
569 | * @mp: the msg_msg that needs a blob | |
570 | * | |
571 | * Allocate the ipc blob for all the modules | |
572 | * | |
573 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
574 | */ | |
3e8c7367 | 575 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
576 | { |
577 | if (blob_sizes.lbs_msg_msg == 0) { | |
578 | mp->security = NULL; | |
579 | return 0; | |
580 | } | |
581 | ||
582 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
583 | if (mp->security == NULL) | |
584 | return -ENOMEM; | |
585 | return 0; | |
586 | } | |
587 | ||
f4ad8f2c CS |
588 | /** |
589 | * lsm_early_task - during initialization allocate a composite task blob | |
590 | * @task: the task that needs a blob | |
591 | * | |
1cfb2a51 | 592 | * Allocate the task blob for all the modules |
f4ad8f2c | 593 | */ |
1cfb2a51 | 594 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 595 | { |
1cfb2a51 | 596 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 597 | |
f4ad8f2c CS |
598 | if (rc) |
599 | panic("%s: Early task alloc failed.\n", __func__); | |
600 | } | |
601 | ||
f25fce3e | 602 | /* |
b1d9e6b0 | 603 | * Hook list operation macros. |
1da177e4 | 604 | * |
f25fce3e CS |
605 | * call_void_hook: |
606 | * This is a hook that does not return a value. | |
1da177e4 | 607 | * |
f25fce3e CS |
608 | * call_int_hook: |
609 | * This is a hook that returns a value. | |
1da177e4 | 610 | */ |
1da177e4 | 611 | |
b1d9e6b0 CS |
612 | #define call_void_hook(FUNC, ...) \ |
613 | do { \ | |
614 | struct security_hook_list *P; \ | |
615 | \ | |
df0ce173 | 616 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
617 | P->hook.FUNC(__VA_ARGS__); \ |
618 | } while (0) | |
619 | ||
620 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
621 | int RC = IRC; \ | |
622 | do { \ | |
623 | struct security_hook_list *P; \ | |
624 | \ | |
df0ce173 | 625 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
626 | RC = P->hook.FUNC(__VA_ARGS__); \ |
627 | if (RC != 0) \ | |
628 | break; \ | |
629 | } \ | |
630 | } while (0); \ | |
631 | RC; \ | |
632 | }) | |
1da177e4 | 633 | |
20510f2f JM |
634 | /* Security operations */ |
635 | ||
79af7307 SS |
636 | int security_binder_set_context_mgr(struct task_struct *mgr) |
637 | { | |
f25fce3e | 638 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 SS |
639 | } |
640 | ||
641 | int security_binder_transaction(struct task_struct *from, | |
642 | struct task_struct *to) | |
643 | { | |
f25fce3e | 644 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 SS |
645 | } |
646 | ||
647 | int security_binder_transfer_binder(struct task_struct *from, | |
648 | struct task_struct *to) | |
649 | { | |
f25fce3e | 650 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 SS |
651 | } |
652 | ||
653 | int security_binder_transfer_file(struct task_struct *from, | |
654 | struct task_struct *to, struct file *file) | |
655 | { | |
f25fce3e | 656 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 SS |
657 | } |
658 | ||
9e48858f | 659 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 660 | { |
f25fce3e | 661 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
662 | } |
663 | ||
664 | int security_ptrace_traceme(struct task_struct *parent) | |
665 | { | |
f25fce3e | 666 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
667 | } |
668 | ||
669 | int security_capget(struct task_struct *target, | |
670 | kernel_cap_t *effective, | |
671 | kernel_cap_t *inheritable, | |
672 | kernel_cap_t *permitted) | |
673 | { | |
f25fce3e CS |
674 | return call_int_hook(capget, 0, target, |
675 | effective, inheritable, permitted); | |
20510f2f JM |
676 | } |
677 | ||
d84f4f99 DH |
678 | int security_capset(struct cred *new, const struct cred *old, |
679 | const kernel_cap_t *effective, | |
680 | const kernel_cap_t *inheritable, | |
681 | const kernel_cap_t *permitted) | |
20510f2f | 682 | { |
f25fce3e CS |
683 | return call_int_hook(capset, 0, new, old, |
684 | effective, inheritable, permitted); | |
20510f2f JM |
685 | } |
686 | ||
c1a85a00 MM |
687 | int security_capable(const struct cred *cred, |
688 | struct user_namespace *ns, | |
689 | int cap, | |
690 | unsigned int opts) | |
20510f2f | 691 | { |
c1a85a00 | 692 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
693 | } |
694 | ||
20510f2f JM |
695 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
696 | { | |
f25fce3e | 697 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
698 | } |
699 | ||
700 | int security_quota_on(struct dentry *dentry) | |
701 | { | |
f25fce3e | 702 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
703 | } |
704 | ||
12b3052c | 705 | int security_syslog(int type) |
20510f2f | 706 | { |
f25fce3e | 707 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
708 | } |
709 | ||
457db29b | 710 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 711 | { |
f25fce3e | 712 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
713 | } |
714 | ||
20510f2f JM |
715 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
716 | { | |
b1d9e6b0 CS |
717 | struct security_hook_list *hp; |
718 | int cap_sys_admin = 1; | |
719 | int rc; | |
720 | ||
721 | /* | |
722 | * The module will respond with a positive value if | |
723 | * it thinks the __vm_enough_memory() call should be | |
724 | * made with the cap_sys_admin set. If all of the modules | |
725 | * agree that it should be set it will. If any module | |
726 | * thinks it should not be set it won't. | |
727 | */ | |
df0ce173 | 728 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
729 | rc = hp->hook.vm_enough_memory(mm, pages); |
730 | if (rc <= 0) { | |
731 | cap_sys_admin = 0; | |
732 | break; | |
733 | } | |
734 | } | |
735 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
736 | } |
737 | ||
a6f76f23 | 738 | int security_bprm_set_creds(struct linux_binprm *bprm) |
20510f2f | 739 | { |
f25fce3e | 740 | return call_int_hook(bprm_set_creds, 0, bprm); |
20510f2f JM |
741 | } |
742 | ||
a6f76f23 | 743 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 744 | { |
6c21a7fb MZ |
745 | int ret; |
746 | ||
f25fce3e | 747 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
748 | if (ret) |
749 | return ret; | |
750 | return ima_bprm_check(bprm); | |
20510f2f JM |
751 | } |
752 | ||
a6f76f23 | 753 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 754 | { |
f25fce3e | 755 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
756 | } |
757 | ||
a6f76f23 | 758 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 759 | { |
f25fce3e | 760 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
761 | } |
762 | ||
0b52075e AV |
763 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
764 | { | |
765 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
766 | } | |
767 | ||
da2441fd DH |
768 | int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param) |
769 | { | |
770 | return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param); | |
771 | } | |
772 | ||
20510f2f JM |
773 | int security_sb_alloc(struct super_block *sb) |
774 | { | |
f25fce3e | 775 | return call_int_hook(sb_alloc_security, 0, sb); |
20510f2f JM |
776 | } |
777 | ||
778 | void security_sb_free(struct super_block *sb) | |
779 | { | |
f25fce3e | 780 | call_void_hook(sb_free_security, sb); |
20510f2f JM |
781 | } |
782 | ||
204cc0cc | 783 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 784 | { |
204cc0cc AV |
785 | if (!*mnt_opts) |
786 | return; | |
787 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
788 | *mnt_opts = NULL; | |
20510f2f | 789 | } |
204cc0cc | 790 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 791 | |
204cc0cc | 792 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 793 | { |
204cc0cc | 794 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 795 | } |
f5c0c26d | 796 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 797 | |
c039bc3c | 798 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 799 | void *mnt_opts) |
20510f2f | 800 | { |
204cc0cc | 801 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 802 | } |
a65001e8 | 803 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 804 | |
a10d7c22 | 805 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 806 | { |
a10d7c22 | 807 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
808 | } |
809 | ||
2069f457 EP |
810 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
811 | { | |
f25fce3e | 812 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
813 | } |
814 | ||
20510f2f JM |
815 | int security_sb_statfs(struct dentry *dentry) |
816 | { | |
f25fce3e | 817 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
818 | } |
819 | ||
8a04c43b | 820 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 821 | const char *type, unsigned long flags, void *data) |
20510f2f | 822 | { |
f25fce3e | 823 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
824 | } |
825 | ||
20510f2f JM |
826 | int security_sb_umount(struct vfsmount *mnt, int flags) |
827 | { | |
f25fce3e | 828 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
829 | } |
830 | ||
3b73b68c | 831 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 832 | { |
f25fce3e | 833 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
834 | } |
835 | ||
c9180a57 | 836 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 837 | void *mnt_opts, |
649f6e77 DQ |
838 | unsigned long kern_flags, |
839 | unsigned long *set_kern_flags) | |
c9180a57 | 840 | { |
b1d9e6b0 | 841 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
842 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
843 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 844 | } |
e0007529 | 845 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 846 | |
094f7b69 | 847 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
848 | struct super_block *newsb, |
849 | unsigned long kern_flags, | |
850 | unsigned long *set_kern_flags) | |
c9180a57 | 851 | { |
0b4d3452 SM |
852 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
853 | kern_flags, set_kern_flags); | |
c9180a57 | 854 | } |
e0007529 EP |
855 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
856 | ||
757cbe59 AV |
857 | int security_add_mnt_opt(const char *option, const char *val, int len, |
858 | void **mnt_opts) | |
e0007529 | 859 | { |
757cbe59 AV |
860 | return call_int_hook(sb_add_mnt_opt, -EINVAL, |
861 | option, val, len, mnt_opts); | |
e0007529 | 862 | } |
757cbe59 | 863 | EXPORT_SYMBOL(security_add_mnt_opt); |
c9180a57 | 864 | |
2db154b3 DH |
865 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
866 | { | |
867 | return call_int_hook(move_mount, 0, from_path, to_path); | |
868 | } | |
869 | ||
20510f2f JM |
870 | int security_inode_alloc(struct inode *inode) |
871 | { | |
afb1cbe3 CS |
872 | int rc = lsm_inode_alloc(inode); |
873 | ||
874 | if (unlikely(rc)) | |
875 | return rc; | |
876 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
877 | if (unlikely(rc)) | |
878 | security_inode_free(inode); | |
879 | return rc; | |
880 | } | |
881 | ||
882 | static void inode_free_by_rcu(struct rcu_head *head) | |
883 | { | |
884 | /* | |
885 | * The rcu head is at the start of the inode blob | |
886 | */ | |
887 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
888 | } |
889 | ||
890 | void security_inode_free(struct inode *inode) | |
891 | { | |
f381c272 | 892 | integrity_inode_free(inode); |
f25fce3e | 893 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
894 | /* |
895 | * The inode may still be referenced in a path walk and | |
896 | * a call to security_inode_permission() can be made | |
897 | * after inode_free_security() is called. Ideally, the VFS | |
898 | * wouldn't do this, but fixing that is a much harder | |
899 | * job. For now, simply free the i_security via RCU, and | |
900 | * leave the current inode->i_security pointer intact. | |
901 | * The inode will be freed after the RCU grace period too. | |
902 | */ | |
903 | if (inode->i_security) | |
904 | call_rcu((struct rcu_head *)inode->i_security, | |
905 | inode_free_by_rcu); | |
20510f2f JM |
906 | } |
907 | ||
d47be3df | 908 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 909 | const struct qstr *name, void **ctx, |
d47be3df DQ |
910 | u32 *ctxlen) |
911 | { | |
b1d9e6b0 CS |
912 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
913 | name, ctx, ctxlen); | |
d47be3df DQ |
914 | } |
915 | EXPORT_SYMBOL(security_dentry_init_security); | |
916 | ||
2602625b VG |
917 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
918 | struct qstr *name, | |
919 | const struct cred *old, struct cred *new) | |
920 | { | |
921 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
922 | name, old, new); | |
923 | } | |
924 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
925 | ||
20510f2f | 926 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
927 | const struct qstr *qstr, |
928 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 929 | { |
823eb1cc MZ |
930 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
931 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
932 | int ret; |
933 | ||
20510f2f | 934 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 935 | return 0; |
9d8f13ba | 936 | |
9d8f13ba | 937 | if (!initxattrs) |
e308fd3b JB |
938 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
939 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 940 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 941 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 942 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
943 | &lsm_xattr->name, |
944 | &lsm_xattr->value, | |
945 | &lsm_xattr->value_len); | |
946 | if (ret) | |
947 | goto out; | |
823eb1cc MZ |
948 | |
949 | evm_xattr = lsm_xattr + 1; | |
950 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
951 | if (ret) | |
952 | goto out; | |
9d8f13ba MZ |
953 | ret = initxattrs(inode, new_xattrs, fs_data); |
954 | out: | |
9548906b | 955 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 956 | kfree(xattr->value); |
9d8f13ba MZ |
957 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
958 | } | |
959 | EXPORT_SYMBOL(security_inode_init_security); | |
960 | ||
961 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, | |
9548906b | 962 | const struct qstr *qstr, const char **name, |
9d8f13ba | 963 | void **value, size_t *len) |
20510f2f JM |
964 | { |
965 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 966 | return -EOPNOTSUPP; |
e308fd3b JB |
967 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
968 | qstr, name, value, len); | |
20510f2f | 969 | } |
9d8f13ba | 970 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 971 | |
be6d3e56 | 972 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 973 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
974 | unsigned int dev) |
975 | { | |
c6f493d6 | 976 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 977 | return 0; |
f25fce3e | 978 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
979 | } |
980 | EXPORT_SYMBOL(security_path_mknod); | |
981 | ||
d3607752 | 982 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 983 | { |
c6f493d6 | 984 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 985 | return 0; |
f25fce3e | 986 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 987 | } |
82140443 | 988 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 989 | |
989f74e0 | 990 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 991 | { |
c6f493d6 | 992 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 993 | return 0; |
f25fce3e | 994 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 KT |
995 | } |
996 | ||
989f74e0 | 997 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 998 | { |
c6f493d6 | 999 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1000 | return 0; |
f25fce3e | 1001 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1002 | } |
82140443 | 1003 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1004 | |
d3607752 | 1005 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1006 | const char *old_name) |
1007 | { | |
c6f493d6 | 1008 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1009 | return 0; |
f25fce3e | 1010 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 KT |
1011 | } |
1012 | ||
3ccee46a | 1013 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1014 | struct dentry *new_dentry) |
1015 | { | |
c6f493d6 | 1016 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1017 | return 0; |
f25fce3e | 1018 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 KT |
1019 | } |
1020 | ||
3ccee46a AV |
1021 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1022 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1023 | unsigned int flags) |
be6d3e56 | 1024 | { |
c6f493d6 DH |
1025 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1026 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1027 | return 0; |
da1ce067 MS |
1028 | |
1029 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1030 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1031 | old_dir, old_dentry); | |
da1ce067 MS |
1032 | if (err) |
1033 | return err; | |
1034 | } | |
1035 | ||
f25fce3e CS |
1036 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1037 | new_dentry); | |
be6d3e56 | 1038 | } |
82140443 | 1039 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1040 | |
81f4c506 | 1041 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1042 | { |
c6f493d6 | 1043 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1044 | return 0; |
f25fce3e | 1045 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1046 | } |
89eda068 | 1047 | |
be01f9f2 | 1048 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1049 | { |
c6f493d6 | 1050 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1051 | return 0; |
f25fce3e | 1052 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 TH |
1053 | } |
1054 | ||
7fd25dac | 1055 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1056 | { |
c6f493d6 | 1057 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1058 | return 0; |
f25fce3e | 1059 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1060 | } |
8b8efb44 | 1061 | |
77b286c0 | 1062 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1063 | { |
f25fce3e | 1064 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1065 | } |
be6d3e56 KT |
1066 | #endif |
1067 | ||
4acdaf27 | 1068 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1069 | { |
1070 | if (unlikely(IS_PRIVATE(dir))) | |
1071 | return 0; | |
f25fce3e | 1072 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1073 | } |
800a9647 | 1074 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1075 | |
1076 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1077 | struct dentry *new_dentry) | |
1078 | { | |
c6f493d6 | 1079 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1080 | return 0; |
f25fce3e | 1081 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1082 | } |
1083 | ||
1084 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1085 | { | |
c6f493d6 | 1086 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1087 | return 0; |
f25fce3e | 1088 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1089 | } |
1090 | ||
1091 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1092 | const char *old_name) | |
1093 | { | |
1094 | if (unlikely(IS_PRIVATE(dir))) | |
1095 | return 0; | |
f25fce3e | 1096 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1097 | } |
1098 | ||
18bb1db3 | 1099 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1100 | { |
1101 | if (unlikely(IS_PRIVATE(dir))) | |
1102 | return 0; | |
f25fce3e | 1103 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1104 | } |
800a9647 | 1105 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1106 | |
1107 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1108 | { | |
c6f493d6 | 1109 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1110 | return 0; |
f25fce3e | 1111 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1112 | } |
1113 | ||
1a67aafb | 1114 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1115 | { |
1116 | if (unlikely(IS_PRIVATE(dir))) | |
1117 | return 0; | |
f25fce3e | 1118 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1119 | } |
1120 | ||
1121 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1122 | struct inode *new_dir, struct dentry *new_dentry, |
1123 | unsigned int flags) | |
20510f2f | 1124 | { |
c6f493d6 DH |
1125 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1126 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1127 | return 0; |
da1ce067 MS |
1128 | |
1129 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1130 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1131 | old_dir, old_dentry); |
1132 | if (err) | |
1133 | return err; | |
1134 | } | |
1135 | ||
f25fce3e | 1136 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1137 | new_dir, new_dentry); |
1138 | } | |
1139 | ||
1140 | int security_inode_readlink(struct dentry *dentry) | |
1141 | { | |
c6f493d6 | 1142 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1143 | return 0; |
f25fce3e | 1144 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1145 | } |
1146 | ||
bda0be7a N |
1147 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1148 | bool rcu) | |
20510f2f | 1149 | { |
bda0be7a | 1150 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1151 | return 0; |
e22619a2 | 1152 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1153 | } |
1154 | ||
b77b0646 | 1155 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1156 | { |
1157 | if (unlikely(IS_PRIVATE(inode))) | |
1158 | return 0; | |
f25fce3e | 1159 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f JM |
1160 | } |
1161 | ||
1162 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1163 | { | |
817b54aa MZ |
1164 | int ret; |
1165 | ||
c6f493d6 | 1166 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1167 | return 0; |
f25fce3e | 1168 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1169 | if (ret) |
1170 | return ret; | |
1171 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1172 | } |
b1da47e2 | 1173 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1174 | |
3f7036a0 | 1175 | int security_inode_getattr(const struct path *path) |
20510f2f | 1176 | { |
c6f493d6 | 1177 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1178 | return 0; |
f25fce3e | 1179 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1180 | } |
1181 | ||
8f0cfa52 DH |
1182 | int security_inode_setxattr(struct dentry *dentry, const char *name, |
1183 | const void *value, size_t size, int flags) | |
20510f2f | 1184 | { |
3e1be52d MZ |
1185 | int ret; |
1186 | ||
c6f493d6 | 1187 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1188 | return 0; |
b1d9e6b0 CS |
1189 | /* |
1190 | * SELinux and Smack integrate the cap call, | |
1191 | * so assume that all LSMs supplying this call do so. | |
1192 | */ | |
1193 | ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, | |
f25fce3e | 1194 | flags); |
b1d9e6b0 CS |
1195 | |
1196 | if (ret == 1) | |
1197 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1198 | if (ret) |
1199 | return ret; | |
1200 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1201 | if (ret) |
1202 | return ret; | |
1203 | return evm_inode_setxattr(dentry, name, value, size); | |
20510f2f JM |
1204 | } |
1205 | ||
8f0cfa52 DH |
1206 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1207 | const void *value, size_t size, int flags) | |
20510f2f | 1208 | { |
c6f493d6 | 1209 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1210 | return; |
f25fce3e | 1211 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1212 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1213 | } |
1214 | ||
8f0cfa52 | 1215 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1216 | { |
c6f493d6 | 1217 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1218 | return 0; |
f25fce3e | 1219 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1220 | } |
1221 | ||
1222 | int security_inode_listxattr(struct dentry *dentry) | |
1223 | { | |
c6f493d6 | 1224 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1225 | return 0; |
f25fce3e | 1226 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1227 | } |
1228 | ||
8f0cfa52 | 1229 | int security_inode_removexattr(struct dentry *dentry, const char *name) |
20510f2f | 1230 | { |
3e1be52d MZ |
1231 | int ret; |
1232 | ||
c6f493d6 | 1233 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1234 | return 0; |
b1d9e6b0 CS |
1235 | /* |
1236 | * SELinux and Smack integrate the cap call, | |
1237 | * so assume that all LSMs supplying this call do so. | |
1238 | */ | |
1239 | ret = call_int_hook(inode_removexattr, 1, dentry, name); | |
1240 | if (ret == 1) | |
1241 | ret = cap_inode_removexattr(dentry, name); | |
42c63330 MZ |
1242 | if (ret) |
1243 | return ret; | |
1244 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1245 | if (ret) |
1246 | return ret; | |
1247 | return evm_inode_removexattr(dentry, name); | |
20510f2f JM |
1248 | } |
1249 | ||
b5376771 SH |
1250 | int security_inode_need_killpriv(struct dentry *dentry) |
1251 | { | |
f25fce3e | 1252 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1253 | } |
1254 | ||
1255 | int security_inode_killpriv(struct dentry *dentry) | |
1256 | { | |
f25fce3e | 1257 | return call_int_hook(inode_killpriv, 0, dentry); |
b5376771 SH |
1258 | } |
1259 | ||
ea861dfd | 1260 | int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) |
20510f2f | 1261 | { |
2885c1e3 CS |
1262 | struct security_hook_list *hp; |
1263 | int rc; | |
1264 | ||
20510f2f | 1265 | if (unlikely(IS_PRIVATE(inode))) |
8d952504 | 1266 | return -EOPNOTSUPP; |
2885c1e3 CS |
1267 | /* |
1268 | * Only one module will provide an attribute with a given name. | |
1269 | */ | |
df0ce173 | 1270 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
2885c1e3 CS |
1271 | rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); |
1272 | if (rc != -EOPNOTSUPP) | |
1273 | return rc; | |
1274 | } | |
1275 | return -EOPNOTSUPP; | |
20510f2f JM |
1276 | } |
1277 | ||
1278 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1279 | { | |
2885c1e3 CS |
1280 | struct security_hook_list *hp; |
1281 | int rc; | |
1282 | ||
20510f2f | 1283 | if (unlikely(IS_PRIVATE(inode))) |
8d952504 | 1284 | return -EOPNOTSUPP; |
2885c1e3 CS |
1285 | /* |
1286 | * Only one module will provide an attribute with a given name. | |
1287 | */ | |
df0ce173 | 1288 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1289 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1290 | flags); | |
1291 | if (rc != -EOPNOTSUPP) | |
1292 | return rc; | |
1293 | } | |
1294 | return -EOPNOTSUPP; | |
20510f2f JM |
1295 | } |
1296 | ||
1297 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1298 | { | |
1299 | if (unlikely(IS_PRIVATE(inode))) | |
1300 | return 0; | |
f25fce3e | 1301 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1302 | } |
c9bccef6 | 1303 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1304 | |
d6335d77 | 1305 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1306 | { |
f25fce3e | 1307 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1308 | } |
1309 | ||
d8ad8b49 VG |
1310 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1311 | { | |
1312 | return call_int_hook(inode_copy_up, 0, src, new); | |
1313 | } | |
1314 | EXPORT_SYMBOL(security_inode_copy_up); | |
1315 | ||
121ab822 VG |
1316 | int security_inode_copy_up_xattr(const char *name) |
1317 | { | |
1318 | return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name); | |
1319 | } | |
1320 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1321 | ||
b230d5ab OM |
1322 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1323 | struct kernfs_node *kn) | |
1324 | { | |
1325 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1326 | } | |
1327 | ||
20510f2f JM |
1328 | int security_file_permission(struct file *file, int mask) |
1329 | { | |
c4ec54b4 EP |
1330 | int ret; |
1331 | ||
f25fce3e | 1332 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1333 | if (ret) |
1334 | return ret; | |
1335 | ||
1336 | return fsnotify_perm(file, mask); | |
20510f2f JM |
1337 | } |
1338 | ||
1339 | int security_file_alloc(struct file *file) | |
1340 | { | |
33bf60ca CS |
1341 | int rc = lsm_file_alloc(file); |
1342 | ||
1343 | if (rc) | |
1344 | return rc; | |
1345 | rc = call_int_hook(file_alloc_security, 0, file); | |
1346 | if (unlikely(rc)) | |
1347 | security_file_free(file); | |
1348 | return rc; | |
20510f2f JM |
1349 | } |
1350 | ||
1351 | void security_file_free(struct file *file) | |
1352 | { | |
33bf60ca CS |
1353 | void *blob; |
1354 | ||
f25fce3e | 1355 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1356 | |
1357 | blob = file->f_security; | |
1358 | if (blob) { | |
1359 | file->f_security = NULL; | |
1360 | kmem_cache_free(lsm_file_cache, blob); | |
1361 | } | |
20510f2f JM |
1362 | } |
1363 | ||
1364 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1365 | { | |
f25fce3e | 1366 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f JM |
1367 | } |
1368 | ||
98de59bf | 1369 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1370 | { |
8b3ec681 | 1371 | /* |
98de59bf AV |
1372 | * Does we have PROT_READ and does the application expect |
1373 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1374 | */ |
98de59bf AV |
1375 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1376 | return prot; | |
8b3ec681 | 1377 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1378 | return prot; |
1379 | /* | |
1380 | * if that's an anonymous mapping, let it. | |
1381 | */ | |
1382 | if (!file) | |
1383 | return prot | PROT_EXEC; | |
1384 | /* | |
1385 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1386 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1387 | */ |
90f8572b | 1388 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1389 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1390 | if (file->f_op->mmap_capabilities) { |
1391 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1392 | if (!(caps & NOMMU_MAP_EXEC)) | |
1393 | return prot; | |
1394 | } | |
8b3ec681 | 1395 | #endif |
98de59bf | 1396 | return prot | PROT_EXEC; |
8b3ec681 | 1397 | } |
98de59bf AV |
1398 | /* anything on noexec mount won't get PROT_EXEC */ |
1399 | return prot; | |
1400 | } | |
1401 | ||
1402 | int security_mmap_file(struct file *file, unsigned long prot, | |
1403 | unsigned long flags) | |
1404 | { | |
1405 | int ret; | |
f25fce3e | 1406 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1407 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1408 | if (ret) |
1409 | return ret; | |
1410 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1411 | } |
1412 | ||
e5467859 AV |
1413 | int security_mmap_addr(unsigned long addr) |
1414 | { | |
f25fce3e | 1415 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1416 | } |
1417 | ||
20510f2f JM |
1418 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1419 | unsigned long prot) | |
1420 | { | |
f25fce3e | 1421 | return call_int_hook(file_mprotect, 0, vma, reqprot, prot); |
20510f2f JM |
1422 | } |
1423 | ||
1424 | int security_file_lock(struct file *file, unsigned int cmd) | |
1425 | { | |
f25fce3e | 1426 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1427 | } |
1428 | ||
1429 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1430 | { | |
f25fce3e | 1431 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1432 | } |
1433 | ||
e0b93edd | 1434 | void security_file_set_fowner(struct file *file) |
20510f2f | 1435 | { |
f25fce3e | 1436 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1437 | } |
1438 | ||
1439 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1440 | struct fown_struct *fown, int sig) | |
1441 | { | |
f25fce3e | 1442 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1443 | } |
1444 | ||
1445 | int security_file_receive(struct file *file) | |
1446 | { | |
f25fce3e | 1447 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1448 | } |
1449 | ||
e3f20ae2 | 1450 | int security_file_open(struct file *file) |
20510f2f | 1451 | { |
c4ec54b4 EP |
1452 | int ret; |
1453 | ||
94817692 | 1454 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1455 | if (ret) |
1456 | return ret; | |
1457 | ||
1458 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1459 | } |
1460 | ||
e4e55b47 TH |
1461 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1462 | { | |
f4ad8f2c CS |
1463 | int rc = lsm_task_alloc(task); |
1464 | ||
1465 | if (rc) | |
1466 | return rc; | |
1467 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1468 | if (unlikely(rc)) | |
1469 | security_task_free(task); | |
1470 | return rc; | |
e4e55b47 TH |
1471 | } |
1472 | ||
1a2a4d06 KC |
1473 | void security_task_free(struct task_struct *task) |
1474 | { | |
f25fce3e | 1475 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1476 | |
1477 | kfree(task->security); | |
1478 | task->security = NULL; | |
1a2a4d06 KC |
1479 | } |
1480 | ||
ee18d64c DH |
1481 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1482 | { | |
bbd3662a CS |
1483 | int rc = lsm_cred_alloc(cred, gfp); |
1484 | ||
1485 | if (rc) | |
1486 | return rc; | |
1487 | ||
1488 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1489 | if (unlikely(rc)) |
bbd3662a CS |
1490 | security_cred_free(cred); |
1491 | return rc; | |
ee18d64c DH |
1492 | } |
1493 | ||
d84f4f99 | 1494 | void security_cred_free(struct cred *cred) |
20510f2f | 1495 | { |
a5795fd3 JM |
1496 | /* |
1497 | * There is a failure case in prepare_creds() that | |
1498 | * may result in a call here with ->security being NULL. | |
1499 | */ | |
1500 | if (unlikely(cred->security == NULL)) | |
1501 | return; | |
1502 | ||
f25fce3e | 1503 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1504 | |
1505 | kfree(cred->security); | |
1506 | cred->security = NULL; | |
20510f2f JM |
1507 | } |
1508 | ||
d84f4f99 | 1509 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1510 | { |
bbd3662a CS |
1511 | int rc = lsm_cred_alloc(new, gfp); |
1512 | ||
1513 | if (rc) | |
1514 | return rc; | |
1515 | ||
1516 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1517 | if (unlikely(rc)) |
bbd3662a CS |
1518 | security_cred_free(new); |
1519 | return rc; | |
d84f4f99 DH |
1520 | } |
1521 | ||
ee18d64c DH |
1522 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1523 | { | |
f25fce3e | 1524 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1525 | } |
1526 | ||
3ec30113 MG |
1527 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
1528 | { | |
1529 | *secid = 0; | |
1530 | call_void_hook(cred_getsecid, c, secid); | |
1531 | } | |
1532 | EXPORT_SYMBOL(security_cred_getsecid); | |
1533 | ||
3a3b7ce9 DH |
1534 | int security_kernel_act_as(struct cred *new, u32 secid) |
1535 | { | |
f25fce3e | 1536 | return call_int_hook(kernel_act_as, 0, new, secid); |
3a3b7ce9 DH |
1537 | } |
1538 | ||
1539 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1540 | { | |
f25fce3e | 1541 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1542 | } |
1543 | ||
dd8dbf2e | 1544 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1545 | { |
6eb864c1 MK |
1546 | int ret; |
1547 | ||
1548 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1549 | if (ret) | |
1550 | return ret; | |
1551 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1552 | } |
1553 | ||
39eeb4fb MZ |
1554 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id) |
1555 | { | |
1556 | int ret; | |
1557 | ||
1558 | ret = call_int_hook(kernel_read_file, 0, file, id); | |
1559 | if (ret) | |
1560 | return ret; | |
1561 | return ima_read_file(file, id); | |
1562 | } | |
1563 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1564 | ||
bc8ca5b9 MZ |
1565 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1566 | enum kernel_read_file_id id) | |
b44a7dfc | 1567 | { |
cf222217 MZ |
1568 | int ret; |
1569 | ||
1570 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1571 | if (ret) | |
1572 | return ret; | |
1573 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1574 | } |
1575 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1576 | ||
377179cd MZ |
1577 | int security_kernel_load_data(enum kernel_load_data_id id) |
1578 | { | |
16c267aa MZ |
1579 | int ret; |
1580 | ||
1581 | ret = call_int_hook(kernel_load_data, 0, id); | |
1582 | if (ret) | |
1583 | return ret; | |
1584 | return ima_load_data(id); | |
377179cd | 1585 | } |
83a68a06 | 1586 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1587 | |
d84f4f99 DH |
1588 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1589 | int flags) | |
20510f2f | 1590 | { |
f25fce3e | 1591 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1592 | } |
1593 | ||
20510f2f JM |
1594 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1595 | { | |
f25fce3e | 1596 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1597 | } |
1598 | ||
1599 | int security_task_getpgid(struct task_struct *p) | |
1600 | { | |
f25fce3e | 1601 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1602 | } |
1603 | ||
1604 | int security_task_getsid(struct task_struct *p) | |
1605 | { | |
f25fce3e | 1606 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1607 | } |
1608 | ||
1609 | void security_task_getsecid(struct task_struct *p, u32 *secid) | |
1610 | { | |
b1d9e6b0 | 1611 | *secid = 0; |
f25fce3e | 1612 | call_void_hook(task_getsecid, p, secid); |
20510f2f JM |
1613 | } |
1614 | EXPORT_SYMBOL(security_task_getsecid); | |
1615 | ||
20510f2f JM |
1616 | int security_task_setnice(struct task_struct *p, int nice) |
1617 | { | |
f25fce3e | 1618 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1619 | } |
1620 | ||
1621 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1622 | { | |
f25fce3e | 1623 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1624 | } |
1625 | ||
1626 | int security_task_getioprio(struct task_struct *p) | |
1627 | { | |
f25fce3e | 1628 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1629 | } |
1630 | ||
791ec491 SS |
1631 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1632 | unsigned int flags) | |
1633 | { | |
1634 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1635 | } | |
1636 | ||
8fd00b4d JS |
1637 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1638 | struct rlimit *new_rlim) | |
20510f2f | 1639 | { |
f25fce3e | 1640 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1641 | } |
1642 | ||
b0ae1981 | 1643 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1644 | { |
f25fce3e | 1645 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1646 | } |
1647 | ||
1648 | int security_task_getscheduler(struct task_struct *p) | |
1649 | { | |
f25fce3e | 1650 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1651 | } |
1652 | ||
1653 | int security_task_movememory(struct task_struct *p) | |
1654 | { | |
f25fce3e | 1655 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1656 | } |
1657 | ||
ae7795bc | 1658 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 1659 | int sig, const struct cred *cred) |
20510f2f | 1660 | { |
6b4f3d01 | 1661 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
1662 | } |
1663 | ||
20510f2f | 1664 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1665 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1666 | { |
b1d9e6b0 CS |
1667 | int thisrc; |
1668 | int rc = -ENOSYS; | |
1669 | struct security_hook_list *hp; | |
1670 | ||
df0ce173 | 1671 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 CS |
1672 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
1673 | if (thisrc != -ENOSYS) { | |
1674 | rc = thisrc; | |
1675 | if (thisrc != 0) | |
1676 | break; | |
1677 | } | |
1678 | } | |
1679 | return rc; | |
20510f2f JM |
1680 | } |
1681 | ||
1682 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1683 | { | |
f25fce3e | 1684 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1685 | } |
1686 | ||
1687 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1688 | { | |
f25fce3e | 1689 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1690 | } |
1691 | ||
8a076191 AD |
1692 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1693 | { | |
b1d9e6b0 | 1694 | *secid = 0; |
f25fce3e | 1695 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1696 | } |
1697 | ||
20510f2f JM |
1698 | int security_msg_msg_alloc(struct msg_msg *msg) |
1699 | { | |
ecd5f82e CS |
1700 | int rc = lsm_msg_msg_alloc(msg); |
1701 | ||
1702 | if (unlikely(rc)) | |
1703 | return rc; | |
1704 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
1705 | if (unlikely(rc)) | |
1706 | security_msg_msg_free(msg); | |
1707 | return rc; | |
20510f2f JM |
1708 | } |
1709 | ||
1710 | void security_msg_msg_free(struct msg_msg *msg) | |
1711 | { | |
f25fce3e | 1712 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
1713 | kfree(msg->security); |
1714 | msg->security = NULL; | |
20510f2f JM |
1715 | } |
1716 | ||
d8c6e854 | 1717 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 1718 | { |
ecd5f82e CS |
1719 | int rc = lsm_ipc_alloc(msq); |
1720 | ||
1721 | if (unlikely(rc)) | |
1722 | return rc; | |
1723 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
1724 | if (unlikely(rc)) | |
1725 | security_msg_queue_free(msq); | |
1726 | return rc; | |
20510f2f JM |
1727 | } |
1728 | ||
d8c6e854 | 1729 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 1730 | { |
f25fce3e | 1731 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
1732 | kfree(msq->security); |
1733 | msq->security = NULL; | |
20510f2f JM |
1734 | } |
1735 | ||
d8c6e854 | 1736 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 1737 | { |
f25fce3e | 1738 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
1739 | } |
1740 | ||
d8c6e854 | 1741 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 1742 | { |
f25fce3e | 1743 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
1744 | } |
1745 | ||
d8c6e854 | 1746 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
1747 | struct msg_msg *msg, int msqflg) |
1748 | { | |
f25fce3e | 1749 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
1750 | } |
1751 | ||
d8c6e854 | 1752 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
1753 | struct task_struct *target, long type, int mode) |
1754 | { | |
f25fce3e | 1755 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
1756 | } |
1757 | ||
7191adff | 1758 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 1759 | { |
ecd5f82e CS |
1760 | int rc = lsm_ipc_alloc(shp); |
1761 | ||
1762 | if (unlikely(rc)) | |
1763 | return rc; | |
1764 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
1765 | if (unlikely(rc)) | |
1766 | security_shm_free(shp); | |
1767 | return rc; | |
20510f2f JM |
1768 | } |
1769 | ||
7191adff | 1770 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 1771 | { |
f25fce3e | 1772 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
1773 | kfree(shp->security); |
1774 | shp->security = NULL; | |
20510f2f JM |
1775 | } |
1776 | ||
7191adff | 1777 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 1778 | { |
f25fce3e | 1779 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
1780 | } |
1781 | ||
7191adff | 1782 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 1783 | { |
f25fce3e | 1784 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
1785 | } |
1786 | ||
7191adff | 1787 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 1788 | { |
f25fce3e | 1789 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
1790 | } |
1791 | ||
aefad959 | 1792 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 1793 | { |
ecd5f82e CS |
1794 | int rc = lsm_ipc_alloc(sma); |
1795 | ||
1796 | if (unlikely(rc)) | |
1797 | return rc; | |
1798 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
1799 | if (unlikely(rc)) | |
1800 | security_sem_free(sma); | |
1801 | return rc; | |
20510f2f JM |
1802 | } |
1803 | ||
aefad959 | 1804 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 1805 | { |
f25fce3e | 1806 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
1807 | kfree(sma->security); |
1808 | sma->security = NULL; | |
20510f2f JM |
1809 | } |
1810 | ||
aefad959 | 1811 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 1812 | { |
f25fce3e | 1813 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
1814 | } |
1815 | ||
aefad959 | 1816 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 1817 | { |
f25fce3e | 1818 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
1819 | } |
1820 | ||
aefad959 | 1821 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
1822 | unsigned nsops, int alter) |
1823 | { | |
f25fce3e | 1824 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
1825 | } |
1826 | ||
1827 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
1828 | { | |
1829 | if (unlikely(inode && IS_PRIVATE(inode))) | |
1830 | return; | |
f25fce3e | 1831 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
1832 | } |
1833 | EXPORT_SYMBOL(security_d_instantiate); | |
1834 | ||
6d9c939d CS |
1835 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
1836 | char **value) | |
20510f2f | 1837 | { |
6d9c939d CS |
1838 | struct security_hook_list *hp; |
1839 | ||
1840 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
1841 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1842 | continue; | |
1843 | return hp->hook.getprocattr(p, name, value); | |
1844 | } | |
1845 | return -EINVAL; | |
20510f2f JM |
1846 | } |
1847 | ||
6d9c939d CS |
1848 | int security_setprocattr(const char *lsm, const char *name, void *value, |
1849 | size_t size) | |
20510f2f | 1850 | { |
6d9c939d CS |
1851 | struct security_hook_list *hp; |
1852 | ||
1853 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
1854 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1855 | continue; | |
1856 | return hp->hook.setprocattr(name, value, size); | |
1857 | } | |
1858 | return -EINVAL; | |
20510f2f JM |
1859 | } |
1860 | ||
1861 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
1862 | { | |
f25fce3e | 1863 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 1864 | } |
20510f2f | 1865 | |
746df9b5 DQ |
1866 | int security_ismaclabel(const char *name) |
1867 | { | |
f25fce3e | 1868 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
1869 | } |
1870 | EXPORT_SYMBOL(security_ismaclabel); | |
1871 | ||
20510f2f JM |
1872 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
1873 | { | |
b1d9e6b0 CS |
1874 | return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata, |
1875 | seclen); | |
20510f2f JM |
1876 | } |
1877 | EXPORT_SYMBOL(security_secid_to_secctx); | |
1878 | ||
7bf570dc | 1879 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 1880 | { |
b1d9e6b0 | 1881 | *secid = 0; |
f25fce3e | 1882 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
1883 | } |
1884 | EXPORT_SYMBOL(security_secctx_to_secid); | |
1885 | ||
20510f2f JM |
1886 | void security_release_secctx(char *secdata, u32 seclen) |
1887 | { | |
f25fce3e | 1888 | call_void_hook(release_secctx, secdata, seclen); |
20510f2f JM |
1889 | } |
1890 | EXPORT_SYMBOL(security_release_secctx); | |
1891 | ||
6f3be9f5 AG |
1892 | void security_inode_invalidate_secctx(struct inode *inode) |
1893 | { | |
1894 | call_void_hook(inode_invalidate_secctx, inode); | |
1895 | } | |
1896 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
1897 | ||
1ee65e37 DQ |
1898 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
1899 | { | |
f25fce3e | 1900 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
1901 | } |
1902 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
1903 | ||
1904 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
1905 | { | |
f25fce3e | 1906 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
1907 | } |
1908 | EXPORT_SYMBOL(security_inode_setsecctx); | |
1909 | ||
1910 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
1911 | { | |
b1d9e6b0 | 1912 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
1913 | } |
1914 | EXPORT_SYMBOL(security_inode_getsecctx); | |
1915 | ||
20510f2f JM |
1916 | #ifdef CONFIG_SECURITY_NETWORK |
1917 | ||
3610cda5 | 1918 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 1919 | { |
f25fce3e | 1920 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
1921 | } |
1922 | EXPORT_SYMBOL(security_unix_stream_connect); | |
1923 | ||
1924 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
1925 | { | |
f25fce3e | 1926 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
1927 | } |
1928 | EXPORT_SYMBOL(security_unix_may_send); | |
1929 | ||
1930 | int security_socket_create(int family, int type, int protocol, int kern) | |
1931 | { | |
f25fce3e | 1932 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
1933 | } |
1934 | ||
1935 | int security_socket_post_create(struct socket *sock, int family, | |
1936 | int type, int protocol, int kern) | |
1937 | { | |
f25fce3e | 1938 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
1939 | protocol, kern); |
1940 | } | |
1941 | ||
aae7cfcb DH |
1942 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
1943 | { | |
1944 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
1945 | } | |
1946 | EXPORT_SYMBOL(security_socket_socketpair); | |
1947 | ||
20510f2f JM |
1948 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
1949 | { | |
f25fce3e | 1950 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
1951 | } |
1952 | ||
1953 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
1954 | { | |
f25fce3e | 1955 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
1956 | } |
1957 | ||
1958 | int security_socket_listen(struct socket *sock, int backlog) | |
1959 | { | |
f25fce3e | 1960 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
1961 | } |
1962 | ||
1963 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
1964 | { | |
f25fce3e | 1965 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
1966 | } |
1967 | ||
20510f2f JM |
1968 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
1969 | { | |
f25fce3e | 1970 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
1971 | } |
1972 | ||
1973 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
1974 | int size, int flags) | |
1975 | { | |
f25fce3e | 1976 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
1977 | } |
1978 | ||
1979 | int security_socket_getsockname(struct socket *sock) | |
1980 | { | |
f25fce3e | 1981 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
1982 | } |
1983 | ||
1984 | int security_socket_getpeername(struct socket *sock) | |
1985 | { | |
f25fce3e | 1986 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
1987 | } |
1988 | ||
1989 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
1990 | { | |
f25fce3e | 1991 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
1992 | } |
1993 | ||
1994 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
1995 | { | |
f25fce3e | 1996 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
1997 | } |
1998 | ||
1999 | int security_socket_shutdown(struct socket *sock, int how) | |
2000 | { | |
f25fce3e | 2001 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2002 | } |
2003 | ||
2004 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2005 | { | |
f25fce3e | 2006 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2007 | } |
2008 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2009 | ||
2010 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2011 | int __user *optlen, unsigned len) | |
2012 | { | |
b1d9e6b0 CS |
2013 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
2014 | optval, optlen, len); | |
20510f2f JM |
2015 | } |
2016 | ||
2017 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
2018 | { | |
e308fd3b JB |
2019 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
2020 | skb, secid); | |
20510f2f JM |
2021 | } |
2022 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2023 | ||
2024 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2025 | { | |
f25fce3e | 2026 | return call_int_hook(sk_alloc_security, 0, sk, family, priority); |
20510f2f JM |
2027 | } |
2028 | ||
2029 | void security_sk_free(struct sock *sk) | |
2030 | { | |
f25fce3e | 2031 | call_void_hook(sk_free_security, sk); |
20510f2f JM |
2032 | } |
2033 | ||
2034 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2035 | { | |
f25fce3e | 2036 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2037 | } |
6230c9b4 | 2038 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f JM |
2039 | |
2040 | void security_sk_classify_flow(struct sock *sk, struct flowi *fl) | |
2041 | { | |
f25fce3e | 2042 | call_void_hook(sk_getsecid, sk, &fl->flowi_secid); |
20510f2f JM |
2043 | } |
2044 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2045 | ||
2046 | void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) | |
2047 | { | |
f25fce3e | 2048 | call_void_hook(req_classify_flow, req, fl); |
20510f2f JM |
2049 | } |
2050 | EXPORT_SYMBOL(security_req_classify_flow); | |
2051 | ||
2052 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2053 | { | |
f25fce3e | 2054 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2055 | } |
2056 | EXPORT_SYMBOL(security_sock_graft); | |
2057 | ||
2058 | int security_inet_conn_request(struct sock *sk, | |
2059 | struct sk_buff *skb, struct request_sock *req) | |
2060 | { | |
f25fce3e | 2061 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2062 | } |
2063 | EXPORT_SYMBOL(security_inet_conn_request); | |
2064 | ||
2065 | void security_inet_csk_clone(struct sock *newsk, | |
2066 | const struct request_sock *req) | |
2067 | { | |
f25fce3e | 2068 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2069 | } |
2070 | ||
2071 | void security_inet_conn_established(struct sock *sk, | |
2072 | struct sk_buff *skb) | |
2073 | { | |
f25fce3e | 2074 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2075 | } |
72e89f50 | 2076 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2077 | |
2606fd1f EP |
2078 | int security_secmark_relabel_packet(u32 secid) |
2079 | { | |
f25fce3e | 2080 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2081 | } |
2082 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2083 | ||
2084 | void security_secmark_refcount_inc(void) | |
2085 | { | |
f25fce3e | 2086 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2087 | } |
2088 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2089 | ||
2090 | void security_secmark_refcount_dec(void) | |
2091 | { | |
f25fce3e | 2092 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2093 | } |
2094 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2095 | ||
5dbbaf2d PM |
2096 | int security_tun_dev_alloc_security(void **security) |
2097 | { | |
f25fce3e | 2098 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2099 | } |
2100 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2101 | ||
2102 | void security_tun_dev_free_security(void *security) | |
2103 | { | |
f25fce3e | 2104 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2105 | } |
2106 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2107 | ||
2b980dbd PM |
2108 | int security_tun_dev_create(void) |
2109 | { | |
f25fce3e | 2110 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2111 | } |
2112 | EXPORT_SYMBOL(security_tun_dev_create); | |
2113 | ||
5dbbaf2d | 2114 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2115 | { |
f25fce3e | 2116 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2117 | } |
5dbbaf2d | 2118 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2119 | |
5dbbaf2d | 2120 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2121 | { |
f25fce3e | 2122 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2123 | } |
2124 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2125 | ||
5dbbaf2d PM |
2126 | int security_tun_dev_open(void *security) |
2127 | { | |
f25fce3e | 2128 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2129 | } |
2130 | EXPORT_SYMBOL(security_tun_dev_open); | |
2131 | ||
72e89f50 RH |
2132 | int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) |
2133 | { | |
2134 | return call_int_hook(sctp_assoc_request, 0, ep, skb); | |
2135 | } | |
2136 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2137 | ||
2138 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2139 | struct sockaddr *address, int addrlen) | |
2140 | { | |
2141 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2142 | address, addrlen); | |
2143 | } | |
2144 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2145 | ||
2146 | void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, | |
2147 | struct sock *newsk) | |
2148 | { | |
2149 | call_void_hook(sctp_sk_clone, ep, sk, newsk); | |
2150 | } | |
2151 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2152 | ||
20510f2f JM |
2153 | #endif /* CONFIG_SECURITY_NETWORK */ |
2154 | ||
d291f1a6 DJ |
2155 | #ifdef CONFIG_SECURITY_INFINIBAND |
2156 | ||
2157 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2158 | { | |
2159 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2160 | } | |
2161 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2162 | ||
47a2b338 DJ |
2163 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2164 | { | |
2165 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2166 | } | |
2167 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2168 | ||
d291f1a6 DJ |
2169 | int security_ib_alloc_security(void **sec) |
2170 | { | |
2171 | return call_int_hook(ib_alloc_security, 0, sec); | |
2172 | } | |
2173 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2174 | ||
2175 | void security_ib_free_security(void *sec) | |
2176 | { | |
2177 | call_void_hook(ib_free_security, sec); | |
2178 | } | |
2179 | EXPORT_SYMBOL(security_ib_free_security); | |
2180 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2181 | ||
20510f2f JM |
2182 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2183 | ||
52a4c640 NA |
2184 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2185 | struct xfrm_user_sec_ctx *sec_ctx, | |
2186 | gfp_t gfp) | |
20510f2f | 2187 | { |
f25fce3e | 2188 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2189 | } |
2190 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2191 | ||
03e1ad7b PM |
2192 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2193 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2194 | { |
f25fce3e | 2195 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2196 | } |
2197 | ||
03e1ad7b | 2198 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2199 | { |
f25fce3e | 2200 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2201 | } |
2202 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2203 | ||
03e1ad7b | 2204 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2205 | { |
f25fce3e | 2206 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2207 | } |
2208 | ||
2e5aa866 PM |
2209 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2210 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2211 | { |
f25fce3e | 2212 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2213 | } |
2214 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2215 | ||
2216 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2217 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2218 | { | |
f25fce3e | 2219 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2220 | } |
2221 | ||
2222 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2223 | { | |
f25fce3e | 2224 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2225 | } |
2226 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2227 | ||
2228 | void security_xfrm_state_free(struct xfrm_state *x) | |
2229 | { | |
f25fce3e | 2230 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2231 | } |
2232 | ||
03e1ad7b | 2233 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
20510f2f | 2234 | { |
f25fce3e | 2235 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
20510f2f JM |
2236 | } |
2237 | ||
2238 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 DM |
2239 | struct xfrm_policy *xp, |
2240 | const struct flowi *fl) | |
20510f2f | 2241 | { |
b1d9e6b0 CS |
2242 | struct security_hook_list *hp; |
2243 | int rc = 1; | |
2244 | ||
2245 | /* | |
2246 | * Since this function is expected to return 0 or 1, the judgment | |
2247 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2248 | * we can use the first LSM's judgment because currently only SELinux | |
2249 | * supplies this call. | |
2250 | * | |
2251 | * For speed optimization, we explicitly break the loop rather than | |
2252 | * using the macro | |
2253 | */ | |
df0ce173 | 2254 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 CS |
2255 | list) { |
2256 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl); | |
2257 | break; | |
2258 | } | |
2259 | return rc; | |
20510f2f JM |
2260 | } |
2261 | ||
2262 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2263 | { | |
f25fce3e | 2264 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2265 | } |
2266 | ||
2267 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) | |
2268 | { | |
f25fce3e CS |
2269 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, |
2270 | 0); | |
20510f2f JM |
2271 | |
2272 | BUG_ON(rc); | |
2273 | } | |
2274 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2275 | ||
2276 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2277 | ||
2278 | #ifdef CONFIG_KEYS | |
2279 | ||
d84f4f99 DH |
2280 | int security_key_alloc(struct key *key, const struct cred *cred, |
2281 | unsigned long flags) | |
20510f2f | 2282 | { |
f25fce3e | 2283 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2284 | } |
2285 | ||
2286 | void security_key_free(struct key *key) | |
2287 | { | |
f25fce3e | 2288 | call_void_hook(key_free, key); |
20510f2f JM |
2289 | } |
2290 | ||
2291 | int security_key_permission(key_ref_t key_ref, | |
f5895943 | 2292 | const struct cred *cred, unsigned perm) |
20510f2f | 2293 | { |
f25fce3e | 2294 | return call_int_hook(key_permission, 0, key_ref, cred, perm); |
20510f2f JM |
2295 | } |
2296 | ||
70a5bb72 DH |
2297 | int security_key_getsecurity(struct key *key, char **_buffer) |
2298 | { | |
b1d9e6b0 | 2299 | *_buffer = NULL; |
f25fce3e | 2300 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2301 | } |
2302 | ||
20510f2f | 2303 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2304 | |
2305 | #ifdef CONFIG_AUDIT | |
2306 | ||
2307 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2308 | { | |
f25fce3e | 2309 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
03d37d25 AD |
2310 | } |
2311 | ||
2312 | int security_audit_rule_known(struct audit_krule *krule) | |
2313 | { | |
f25fce3e | 2314 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2315 | } |
2316 | ||
2317 | void security_audit_rule_free(void *lsmrule) | |
2318 | { | |
f25fce3e | 2319 | call_void_hook(audit_rule_free, lsmrule); |
03d37d25 AD |
2320 | } |
2321 | ||
90462a5b | 2322 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule) |
03d37d25 | 2323 | { |
90462a5b | 2324 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule); |
03d37d25 | 2325 | } |
b1d9e6b0 | 2326 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2327 | |
2328 | #ifdef CONFIG_BPF_SYSCALL | |
2329 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2330 | { | |
2331 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2332 | } | |
2333 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2334 | { | |
2335 | return call_int_hook(bpf_map, 0, map, fmode); | |
2336 | } | |
2337 | int security_bpf_prog(struct bpf_prog *prog) | |
2338 | { | |
2339 | return call_int_hook(bpf_prog, 0, prog); | |
2340 | } | |
2341 | int security_bpf_map_alloc(struct bpf_map *map) | |
2342 | { | |
2343 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2344 | } | |
2345 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2346 | { | |
2347 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2348 | } | |
2349 | void security_bpf_map_free(struct bpf_map *map) | |
2350 | { | |
2351 | call_void_hook(bpf_map_free_security, map); | |
2352 | } | |
2353 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2354 | { | |
2355 | call_void_hook(bpf_prog_free_security, aux); | |
2356 | } | |
2357 | #endif /* CONFIG_BPF_SYSCALL */ |