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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; |
42df744c | 38 | static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain); |
8f408ab6 | 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 | ||
42df744c | 429 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 430 | { |
42df744c JK |
431 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
432 | event, data); | |
8f408ab6 | 433 | } |
42df744c | 434 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 435 | |
42df744c | 436 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 437 | { |
42df744c JK |
438 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
439 | nb); | |
8f408ab6 | 440 | } |
42df744c | 441 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 442 | |
42df744c | 443 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 444 | { |
42df744c JK |
445 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
446 | nb); | |
8f408ab6 | 447 | } |
42df744c | 448 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 449 | |
bbd3662a CS |
450 | /** |
451 | * lsm_cred_alloc - allocate a composite cred blob | |
452 | * @cred: the cred that needs a blob | |
453 | * @gfp: allocation type | |
454 | * | |
455 | * Allocate the cred blob for all the modules | |
456 | * | |
457 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
458 | */ | |
459 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
460 | { | |
461 | if (blob_sizes.lbs_cred == 0) { | |
462 | cred->security = NULL; | |
463 | return 0; | |
464 | } | |
465 | ||
466 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
467 | if (cred->security == NULL) | |
468 | return -ENOMEM; | |
469 | return 0; | |
470 | } | |
471 | ||
472 | /** | |
473 | * lsm_early_cred - during initialization allocate a composite cred blob | |
474 | * @cred: the cred that needs a blob | |
475 | * | |
1cfb2a51 | 476 | * Allocate the cred blob for all the modules |
bbd3662a | 477 | */ |
1cfb2a51 | 478 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 479 | { |
1cfb2a51 | 480 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 481 | |
bbd3662a CS |
482 | if (rc) |
483 | panic("%s: Early cred alloc failed.\n", __func__); | |
484 | } | |
485 | ||
33bf60ca CS |
486 | /** |
487 | * lsm_file_alloc - allocate a composite file blob | |
488 | * @file: the file that needs a blob | |
489 | * | |
490 | * Allocate the file blob for all the modules | |
491 | * | |
492 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
493 | */ | |
494 | static int lsm_file_alloc(struct file *file) | |
495 | { | |
496 | if (!lsm_file_cache) { | |
497 | file->f_security = NULL; | |
498 | return 0; | |
499 | } | |
500 | ||
501 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
502 | if (file->f_security == NULL) | |
503 | return -ENOMEM; | |
504 | return 0; | |
505 | } | |
506 | ||
afb1cbe3 CS |
507 | /** |
508 | * lsm_inode_alloc - allocate a composite inode blob | |
509 | * @inode: the inode that needs a blob | |
510 | * | |
511 | * Allocate the inode blob for all the modules | |
512 | * | |
513 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
514 | */ | |
515 | int lsm_inode_alloc(struct inode *inode) | |
516 | { | |
517 | if (!lsm_inode_cache) { | |
518 | inode->i_security = NULL; | |
519 | return 0; | |
520 | } | |
521 | ||
522 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
523 | if (inode->i_security == NULL) | |
524 | return -ENOMEM; | |
525 | return 0; | |
526 | } | |
527 | ||
f4ad8f2c CS |
528 | /** |
529 | * lsm_task_alloc - allocate a composite task blob | |
530 | * @task: the task that needs a blob | |
531 | * | |
532 | * Allocate the task blob for all the modules | |
533 | * | |
534 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
535 | */ | |
3e8c7367 | 536 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c CS |
537 | { |
538 | if (blob_sizes.lbs_task == 0) { | |
539 | task->security = NULL; | |
540 | return 0; | |
541 | } | |
542 | ||
543 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
544 | if (task->security == NULL) | |
545 | return -ENOMEM; | |
546 | return 0; | |
547 | } | |
548 | ||
ecd5f82e CS |
549 | /** |
550 | * lsm_ipc_alloc - allocate a composite ipc blob | |
551 | * @kip: the ipc that needs a blob | |
552 | * | |
553 | * Allocate the ipc blob for all the modules | |
554 | * | |
555 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
556 | */ | |
3e8c7367 | 557 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
558 | { |
559 | if (blob_sizes.lbs_ipc == 0) { | |
560 | kip->security = NULL; | |
561 | return 0; | |
562 | } | |
563 | ||
564 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
565 | if (kip->security == NULL) | |
566 | return -ENOMEM; | |
567 | return 0; | |
568 | } | |
569 | ||
570 | /** | |
571 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
572 | * @mp: the msg_msg that needs a blob | |
573 | * | |
574 | * Allocate the ipc blob for all the modules | |
575 | * | |
576 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
577 | */ | |
3e8c7367 | 578 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
579 | { |
580 | if (blob_sizes.lbs_msg_msg == 0) { | |
581 | mp->security = NULL; | |
582 | return 0; | |
583 | } | |
584 | ||
585 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
586 | if (mp->security == NULL) | |
587 | return -ENOMEM; | |
588 | return 0; | |
589 | } | |
590 | ||
f4ad8f2c CS |
591 | /** |
592 | * lsm_early_task - during initialization allocate a composite task blob | |
593 | * @task: the task that needs a blob | |
594 | * | |
1cfb2a51 | 595 | * Allocate the task blob for all the modules |
f4ad8f2c | 596 | */ |
1cfb2a51 | 597 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 598 | { |
1cfb2a51 | 599 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 600 | |
f4ad8f2c CS |
601 | if (rc) |
602 | panic("%s: Early task alloc failed.\n", __func__); | |
603 | } | |
604 | ||
f25fce3e | 605 | /* |
b1d9e6b0 | 606 | * Hook list operation macros. |
1da177e4 | 607 | * |
f25fce3e CS |
608 | * call_void_hook: |
609 | * This is a hook that does not return a value. | |
1da177e4 | 610 | * |
f25fce3e CS |
611 | * call_int_hook: |
612 | * This is a hook that returns a value. | |
1da177e4 | 613 | */ |
1da177e4 | 614 | |
b1d9e6b0 CS |
615 | #define call_void_hook(FUNC, ...) \ |
616 | do { \ | |
617 | struct security_hook_list *P; \ | |
618 | \ | |
df0ce173 | 619 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
620 | P->hook.FUNC(__VA_ARGS__); \ |
621 | } while (0) | |
622 | ||
623 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
624 | int RC = IRC; \ | |
625 | do { \ | |
626 | struct security_hook_list *P; \ | |
627 | \ | |
df0ce173 | 628 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
629 | RC = P->hook.FUNC(__VA_ARGS__); \ |
630 | if (RC != 0) \ | |
631 | break; \ | |
632 | } \ | |
633 | } while (0); \ | |
634 | RC; \ | |
635 | }) | |
1da177e4 | 636 | |
20510f2f JM |
637 | /* Security operations */ |
638 | ||
79af7307 SS |
639 | int security_binder_set_context_mgr(struct task_struct *mgr) |
640 | { | |
f25fce3e | 641 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 SS |
642 | } |
643 | ||
644 | int security_binder_transaction(struct task_struct *from, | |
645 | struct task_struct *to) | |
646 | { | |
f25fce3e | 647 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 SS |
648 | } |
649 | ||
650 | int security_binder_transfer_binder(struct task_struct *from, | |
651 | struct task_struct *to) | |
652 | { | |
f25fce3e | 653 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 SS |
654 | } |
655 | ||
656 | int security_binder_transfer_file(struct task_struct *from, | |
657 | struct task_struct *to, struct file *file) | |
658 | { | |
f25fce3e | 659 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 SS |
660 | } |
661 | ||
9e48858f | 662 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 663 | { |
f25fce3e | 664 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
665 | } |
666 | ||
667 | int security_ptrace_traceme(struct task_struct *parent) | |
668 | { | |
f25fce3e | 669 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
670 | } |
671 | ||
672 | int security_capget(struct task_struct *target, | |
673 | kernel_cap_t *effective, | |
674 | kernel_cap_t *inheritable, | |
675 | kernel_cap_t *permitted) | |
676 | { | |
f25fce3e CS |
677 | return call_int_hook(capget, 0, target, |
678 | effective, inheritable, permitted); | |
20510f2f JM |
679 | } |
680 | ||
d84f4f99 DH |
681 | int security_capset(struct cred *new, const struct cred *old, |
682 | const kernel_cap_t *effective, | |
683 | const kernel_cap_t *inheritable, | |
684 | const kernel_cap_t *permitted) | |
20510f2f | 685 | { |
f25fce3e CS |
686 | return call_int_hook(capset, 0, new, old, |
687 | effective, inheritable, permitted); | |
20510f2f JM |
688 | } |
689 | ||
c1a85a00 MM |
690 | int security_capable(const struct cred *cred, |
691 | struct user_namespace *ns, | |
692 | int cap, | |
693 | unsigned int opts) | |
20510f2f | 694 | { |
c1a85a00 | 695 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
696 | } |
697 | ||
20510f2f JM |
698 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
699 | { | |
f25fce3e | 700 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
701 | } |
702 | ||
703 | int security_quota_on(struct dentry *dentry) | |
704 | { | |
f25fce3e | 705 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
706 | } |
707 | ||
12b3052c | 708 | int security_syslog(int type) |
20510f2f | 709 | { |
f25fce3e | 710 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
711 | } |
712 | ||
457db29b | 713 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 714 | { |
f25fce3e | 715 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
716 | } |
717 | ||
20510f2f JM |
718 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
719 | { | |
b1d9e6b0 CS |
720 | struct security_hook_list *hp; |
721 | int cap_sys_admin = 1; | |
722 | int rc; | |
723 | ||
724 | /* | |
725 | * The module will respond with a positive value if | |
726 | * it thinks the __vm_enough_memory() call should be | |
727 | * made with the cap_sys_admin set. If all of the modules | |
728 | * agree that it should be set it will. If any module | |
729 | * thinks it should not be set it won't. | |
730 | */ | |
df0ce173 | 731 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
732 | rc = hp->hook.vm_enough_memory(mm, pages); |
733 | if (rc <= 0) { | |
734 | cap_sys_admin = 0; | |
735 | break; | |
736 | } | |
737 | } | |
738 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
739 | } |
740 | ||
a6f76f23 | 741 | int security_bprm_set_creds(struct linux_binprm *bprm) |
20510f2f | 742 | { |
f25fce3e | 743 | return call_int_hook(bprm_set_creds, 0, bprm); |
20510f2f JM |
744 | } |
745 | ||
a6f76f23 | 746 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 747 | { |
6c21a7fb MZ |
748 | int ret; |
749 | ||
f25fce3e | 750 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
751 | if (ret) |
752 | return ret; | |
753 | return ima_bprm_check(bprm); | |
20510f2f JM |
754 | } |
755 | ||
a6f76f23 | 756 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 757 | { |
f25fce3e | 758 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
759 | } |
760 | ||
a6f76f23 | 761 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 762 | { |
f25fce3e | 763 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
764 | } |
765 | ||
0b52075e AV |
766 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
767 | { | |
768 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
769 | } | |
770 | ||
da2441fd DH |
771 | int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param) |
772 | { | |
773 | return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param); | |
774 | } | |
775 | ||
20510f2f JM |
776 | int security_sb_alloc(struct super_block *sb) |
777 | { | |
f25fce3e | 778 | return call_int_hook(sb_alloc_security, 0, sb); |
20510f2f JM |
779 | } |
780 | ||
781 | void security_sb_free(struct super_block *sb) | |
782 | { | |
f25fce3e | 783 | call_void_hook(sb_free_security, sb); |
20510f2f JM |
784 | } |
785 | ||
204cc0cc | 786 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 787 | { |
204cc0cc AV |
788 | if (!*mnt_opts) |
789 | return; | |
790 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
791 | *mnt_opts = NULL; | |
20510f2f | 792 | } |
204cc0cc | 793 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 794 | |
204cc0cc | 795 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 796 | { |
204cc0cc | 797 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 798 | } |
f5c0c26d | 799 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 800 | |
c039bc3c | 801 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 802 | void *mnt_opts) |
20510f2f | 803 | { |
204cc0cc | 804 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 805 | } |
a65001e8 | 806 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 807 | |
a10d7c22 | 808 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 809 | { |
a10d7c22 | 810 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
811 | } |
812 | ||
2069f457 EP |
813 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
814 | { | |
f25fce3e | 815 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
816 | } |
817 | ||
20510f2f JM |
818 | int security_sb_statfs(struct dentry *dentry) |
819 | { | |
f25fce3e | 820 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
821 | } |
822 | ||
8a04c43b | 823 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 824 | const char *type, unsigned long flags, void *data) |
20510f2f | 825 | { |
f25fce3e | 826 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
827 | } |
828 | ||
20510f2f JM |
829 | int security_sb_umount(struct vfsmount *mnt, int flags) |
830 | { | |
f25fce3e | 831 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
832 | } |
833 | ||
3b73b68c | 834 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 835 | { |
f25fce3e | 836 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
837 | } |
838 | ||
c9180a57 | 839 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 840 | void *mnt_opts, |
649f6e77 DQ |
841 | unsigned long kern_flags, |
842 | unsigned long *set_kern_flags) | |
c9180a57 | 843 | { |
b1d9e6b0 | 844 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
845 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
846 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 847 | } |
e0007529 | 848 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 849 | |
094f7b69 | 850 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
851 | struct super_block *newsb, |
852 | unsigned long kern_flags, | |
853 | unsigned long *set_kern_flags) | |
c9180a57 | 854 | { |
0b4d3452 SM |
855 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
856 | kern_flags, set_kern_flags); | |
c9180a57 | 857 | } |
e0007529 EP |
858 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
859 | ||
757cbe59 AV |
860 | int security_add_mnt_opt(const char *option, const char *val, int len, |
861 | void **mnt_opts) | |
e0007529 | 862 | { |
757cbe59 AV |
863 | return call_int_hook(sb_add_mnt_opt, -EINVAL, |
864 | option, val, len, mnt_opts); | |
e0007529 | 865 | } |
757cbe59 | 866 | EXPORT_SYMBOL(security_add_mnt_opt); |
c9180a57 | 867 | |
2db154b3 DH |
868 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
869 | { | |
870 | return call_int_hook(move_mount, 0, from_path, to_path); | |
871 | } | |
872 | ||
20510f2f JM |
873 | int security_inode_alloc(struct inode *inode) |
874 | { | |
afb1cbe3 CS |
875 | int rc = lsm_inode_alloc(inode); |
876 | ||
877 | if (unlikely(rc)) | |
878 | return rc; | |
879 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
880 | if (unlikely(rc)) | |
881 | security_inode_free(inode); | |
882 | return rc; | |
883 | } | |
884 | ||
885 | static void inode_free_by_rcu(struct rcu_head *head) | |
886 | { | |
887 | /* | |
888 | * The rcu head is at the start of the inode blob | |
889 | */ | |
890 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
891 | } |
892 | ||
893 | void security_inode_free(struct inode *inode) | |
894 | { | |
f381c272 | 895 | integrity_inode_free(inode); |
f25fce3e | 896 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
897 | /* |
898 | * The inode may still be referenced in a path walk and | |
899 | * a call to security_inode_permission() can be made | |
900 | * after inode_free_security() is called. Ideally, the VFS | |
901 | * wouldn't do this, but fixing that is a much harder | |
902 | * job. For now, simply free the i_security via RCU, and | |
903 | * leave the current inode->i_security pointer intact. | |
904 | * The inode will be freed after the RCU grace period too. | |
905 | */ | |
906 | if (inode->i_security) | |
907 | call_rcu((struct rcu_head *)inode->i_security, | |
908 | inode_free_by_rcu); | |
20510f2f JM |
909 | } |
910 | ||
d47be3df | 911 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 912 | const struct qstr *name, void **ctx, |
d47be3df DQ |
913 | u32 *ctxlen) |
914 | { | |
b1d9e6b0 CS |
915 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
916 | name, ctx, ctxlen); | |
d47be3df DQ |
917 | } |
918 | EXPORT_SYMBOL(security_dentry_init_security); | |
919 | ||
2602625b VG |
920 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
921 | struct qstr *name, | |
922 | const struct cred *old, struct cred *new) | |
923 | { | |
924 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
925 | name, old, new); | |
926 | } | |
927 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
928 | ||
20510f2f | 929 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
930 | const struct qstr *qstr, |
931 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 932 | { |
823eb1cc MZ |
933 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
934 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
935 | int ret; |
936 | ||
20510f2f | 937 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 938 | return 0; |
9d8f13ba | 939 | |
9d8f13ba | 940 | if (!initxattrs) |
e308fd3b JB |
941 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
942 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 943 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 944 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 945 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
946 | &lsm_xattr->name, |
947 | &lsm_xattr->value, | |
948 | &lsm_xattr->value_len); | |
949 | if (ret) | |
950 | goto out; | |
823eb1cc MZ |
951 | |
952 | evm_xattr = lsm_xattr + 1; | |
953 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
954 | if (ret) | |
955 | goto out; | |
9d8f13ba MZ |
956 | ret = initxattrs(inode, new_xattrs, fs_data); |
957 | out: | |
9548906b | 958 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 959 | kfree(xattr->value); |
9d8f13ba MZ |
960 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
961 | } | |
962 | EXPORT_SYMBOL(security_inode_init_security); | |
963 | ||
964 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, | |
9548906b | 965 | const struct qstr *qstr, const char **name, |
9d8f13ba | 966 | void **value, size_t *len) |
20510f2f JM |
967 | { |
968 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 969 | return -EOPNOTSUPP; |
e308fd3b JB |
970 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
971 | qstr, name, value, len); | |
20510f2f | 972 | } |
9d8f13ba | 973 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 974 | |
be6d3e56 | 975 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 976 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
977 | unsigned int dev) |
978 | { | |
c6f493d6 | 979 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 980 | return 0; |
f25fce3e | 981 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
982 | } |
983 | EXPORT_SYMBOL(security_path_mknod); | |
984 | ||
d3607752 | 985 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 986 | { |
c6f493d6 | 987 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 988 | return 0; |
f25fce3e | 989 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 990 | } |
82140443 | 991 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 992 | |
989f74e0 | 993 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 994 | { |
c6f493d6 | 995 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 996 | return 0; |
f25fce3e | 997 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 KT |
998 | } |
999 | ||
989f74e0 | 1000 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1001 | { |
c6f493d6 | 1002 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1003 | return 0; |
f25fce3e | 1004 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1005 | } |
82140443 | 1006 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1007 | |
d3607752 | 1008 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1009 | const char *old_name) |
1010 | { | |
c6f493d6 | 1011 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1012 | return 0; |
f25fce3e | 1013 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 KT |
1014 | } |
1015 | ||
3ccee46a | 1016 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1017 | struct dentry *new_dentry) |
1018 | { | |
c6f493d6 | 1019 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1020 | return 0; |
f25fce3e | 1021 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 KT |
1022 | } |
1023 | ||
3ccee46a AV |
1024 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1025 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1026 | unsigned int flags) |
be6d3e56 | 1027 | { |
c6f493d6 DH |
1028 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1029 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1030 | return 0; |
da1ce067 MS |
1031 | |
1032 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1033 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1034 | old_dir, old_dentry); | |
da1ce067 MS |
1035 | if (err) |
1036 | return err; | |
1037 | } | |
1038 | ||
f25fce3e CS |
1039 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1040 | new_dentry); | |
be6d3e56 | 1041 | } |
82140443 | 1042 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1043 | |
81f4c506 | 1044 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1045 | { |
c6f493d6 | 1046 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1047 | return 0; |
f25fce3e | 1048 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1049 | } |
89eda068 | 1050 | |
be01f9f2 | 1051 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1052 | { |
c6f493d6 | 1053 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1054 | return 0; |
f25fce3e | 1055 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 TH |
1056 | } |
1057 | ||
7fd25dac | 1058 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1059 | { |
c6f493d6 | 1060 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1061 | return 0; |
f25fce3e | 1062 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1063 | } |
8b8efb44 | 1064 | |
77b286c0 | 1065 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1066 | { |
f25fce3e | 1067 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1068 | } |
be6d3e56 KT |
1069 | #endif |
1070 | ||
4acdaf27 | 1071 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1072 | { |
1073 | if (unlikely(IS_PRIVATE(dir))) | |
1074 | return 0; | |
f25fce3e | 1075 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1076 | } |
800a9647 | 1077 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1078 | |
1079 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1080 | struct dentry *new_dentry) | |
1081 | { | |
c6f493d6 | 1082 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1083 | return 0; |
f25fce3e | 1084 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1085 | } |
1086 | ||
1087 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1088 | { | |
c6f493d6 | 1089 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1090 | return 0; |
f25fce3e | 1091 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1092 | } |
1093 | ||
1094 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1095 | const char *old_name) | |
1096 | { | |
1097 | if (unlikely(IS_PRIVATE(dir))) | |
1098 | return 0; | |
f25fce3e | 1099 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1100 | } |
1101 | ||
18bb1db3 | 1102 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1103 | { |
1104 | if (unlikely(IS_PRIVATE(dir))) | |
1105 | return 0; | |
f25fce3e | 1106 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1107 | } |
800a9647 | 1108 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1109 | |
1110 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1111 | { | |
c6f493d6 | 1112 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1113 | return 0; |
f25fce3e | 1114 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1115 | } |
1116 | ||
1a67aafb | 1117 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1118 | { |
1119 | if (unlikely(IS_PRIVATE(dir))) | |
1120 | return 0; | |
f25fce3e | 1121 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1122 | } |
1123 | ||
1124 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1125 | struct inode *new_dir, struct dentry *new_dentry, |
1126 | unsigned int flags) | |
20510f2f | 1127 | { |
c6f493d6 DH |
1128 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1129 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1130 | return 0; |
da1ce067 MS |
1131 | |
1132 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1133 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1134 | old_dir, old_dentry); |
1135 | if (err) | |
1136 | return err; | |
1137 | } | |
1138 | ||
f25fce3e | 1139 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1140 | new_dir, new_dentry); |
1141 | } | |
1142 | ||
1143 | int security_inode_readlink(struct dentry *dentry) | |
1144 | { | |
c6f493d6 | 1145 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1146 | return 0; |
f25fce3e | 1147 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1148 | } |
1149 | ||
bda0be7a N |
1150 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1151 | bool rcu) | |
20510f2f | 1152 | { |
bda0be7a | 1153 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1154 | return 0; |
e22619a2 | 1155 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1156 | } |
1157 | ||
b77b0646 | 1158 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1159 | { |
1160 | if (unlikely(IS_PRIVATE(inode))) | |
1161 | return 0; | |
f25fce3e | 1162 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f JM |
1163 | } |
1164 | ||
1165 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1166 | { | |
817b54aa MZ |
1167 | int ret; |
1168 | ||
c6f493d6 | 1169 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1170 | return 0; |
f25fce3e | 1171 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1172 | if (ret) |
1173 | return ret; | |
1174 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1175 | } |
b1da47e2 | 1176 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1177 | |
3f7036a0 | 1178 | int security_inode_getattr(const struct path *path) |
20510f2f | 1179 | { |
c6f493d6 | 1180 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1181 | return 0; |
f25fce3e | 1182 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1183 | } |
1184 | ||
8f0cfa52 DH |
1185 | int security_inode_setxattr(struct dentry *dentry, const char *name, |
1186 | const void *value, size_t size, int flags) | |
20510f2f | 1187 | { |
3e1be52d MZ |
1188 | int ret; |
1189 | ||
c6f493d6 | 1190 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1191 | return 0; |
b1d9e6b0 CS |
1192 | /* |
1193 | * SELinux and Smack integrate the cap call, | |
1194 | * so assume that all LSMs supplying this call do so. | |
1195 | */ | |
1196 | ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, | |
f25fce3e | 1197 | flags); |
b1d9e6b0 CS |
1198 | |
1199 | if (ret == 1) | |
1200 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1201 | if (ret) |
1202 | return ret; | |
1203 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1204 | if (ret) |
1205 | return ret; | |
1206 | return evm_inode_setxattr(dentry, name, value, size); | |
20510f2f JM |
1207 | } |
1208 | ||
8f0cfa52 DH |
1209 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1210 | const void *value, size_t size, int flags) | |
20510f2f | 1211 | { |
c6f493d6 | 1212 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1213 | return; |
f25fce3e | 1214 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1215 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1216 | } |
1217 | ||
8f0cfa52 | 1218 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1219 | { |
c6f493d6 | 1220 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1221 | return 0; |
f25fce3e | 1222 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1223 | } |
1224 | ||
1225 | int security_inode_listxattr(struct dentry *dentry) | |
1226 | { | |
c6f493d6 | 1227 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1228 | return 0; |
f25fce3e | 1229 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1230 | } |
1231 | ||
8f0cfa52 | 1232 | int security_inode_removexattr(struct dentry *dentry, const char *name) |
20510f2f | 1233 | { |
3e1be52d MZ |
1234 | int ret; |
1235 | ||
c6f493d6 | 1236 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1237 | return 0; |
b1d9e6b0 CS |
1238 | /* |
1239 | * SELinux and Smack integrate the cap call, | |
1240 | * so assume that all LSMs supplying this call do so. | |
1241 | */ | |
1242 | ret = call_int_hook(inode_removexattr, 1, dentry, name); | |
1243 | if (ret == 1) | |
1244 | ret = cap_inode_removexattr(dentry, name); | |
42c63330 MZ |
1245 | if (ret) |
1246 | return ret; | |
1247 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1248 | if (ret) |
1249 | return ret; | |
1250 | return evm_inode_removexattr(dentry, name); | |
20510f2f JM |
1251 | } |
1252 | ||
b5376771 SH |
1253 | int security_inode_need_killpriv(struct dentry *dentry) |
1254 | { | |
f25fce3e | 1255 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1256 | } |
1257 | ||
1258 | int security_inode_killpriv(struct dentry *dentry) | |
1259 | { | |
f25fce3e | 1260 | return call_int_hook(inode_killpriv, 0, dentry); |
b5376771 SH |
1261 | } |
1262 | ||
ea861dfd | 1263 | int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) |
20510f2f | 1264 | { |
2885c1e3 CS |
1265 | struct security_hook_list *hp; |
1266 | int rc; | |
1267 | ||
20510f2f | 1268 | if (unlikely(IS_PRIVATE(inode))) |
8d952504 | 1269 | return -EOPNOTSUPP; |
2885c1e3 CS |
1270 | /* |
1271 | * Only one module will provide an attribute with a given name. | |
1272 | */ | |
df0ce173 | 1273 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
2885c1e3 CS |
1274 | rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); |
1275 | if (rc != -EOPNOTSUPP) | |
1276 | return rc; | |
1277 | } | |
1278 | return -EOPNOTSUPP; | |
20510f2f JM |
1279 | } |
1280 | ||
1281 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1282 | { | |
2885c1e3 CS |
1283 | struct security_hook_list *hp; |
1284 | int rc; | |
1285 | ||
20510f2f | 1286 | if (unlikely(IS_PRIVATE(inode))) |
8d952504 | 1287 | return -EOPNOTSUPP; |
2885c1e3 CS |
1288 | /* |
1289 | * Only one module will provide an attribute with a given name. | |
1290 | */ | |
df0ce173 | 1291 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1292 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1293 | flags); | |
1294 | if (rc != -EOPNOTSUPP) | |
1295 | return rc; | |
1296 | } | |
1297 | return -EOPNOTSUPP; | |
20510f2f JM |
1298 | } |
1299 | ||
1300 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1301 | { | |
1302 | if (unlikely(IS_PRIVATE(inode))) | |
1303 | return 0; | |
f25fce3e | 1304 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1305 | } |
c9bccef6 | 1306 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1307 | |
d6335d77 | 1308 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1309 | { |
f25fce3e | 1310 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1311 | } |
1312 | ||
d8ad8b49 VG |
1313 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1314 | { | |
1315 | return call_int_hook(inode_copy_up, 0, src, new); | |
1316 | } | |
1317 | EXPORT_SYMBOL(security_inode_copy_up); | |
1318 | ||
121ab822 VG |
1319 | int security_inode_copy_up_xattr(const char *name) |
1320 | { | |
1321 | return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name); | |
1322 | } | |
1323 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1324 | ||
b230d5ab OM |
1325 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1326 | struct kernfs_node *kn) | |
1327 | { | |
1328 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1329 | } | |
1330 | ||
20510f2f JM |
1331 | int security_file_permission(struct file *file, int mask) |
1332 | { | |
c4ec54b4 EP |
1333 | int ret; |
1334 | ||
f25fce3e | 1335 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1336 | if (ret) |
1337 | return ret; | |
1338 | ||
1339 | return fsnotify_perm(file, mask); | |
20510f2f JM |
1340 | } |
1341 | ||
1342 | int security_file_alloc(struct file *file) | |
1343 | { | |
33bf60ca CS |
1344 | int rc = lsm_file_alloc(file); |
1345 | ||
1346 | if (rc) | |
1347 | return rc; | |
1348 | rc = call_int_hook(file_alloc_security, 0, file); | |
1349 | if (unlikely(rc)) | |
1350 | security_file_free(file); | |
1351 | return rc; | |
20510f2f JM |
1352 | } |
1353 | ||
1354 | void security_file_free(struct file *file) | |
1355 | { | |
33bf60ca CS |
1356 | void *blob; |
1357 | ||
f25fce3e | 1358 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1359 | |
1360 | blob = file->f_security; | |
1361 | if (blob) { | |
1362 | file->f_security = NULL; | |
1363 | kmem_cache_free(lsm_file_cache, blob); | |
1364 | } | |
20510f2f JM |
1365 | } |
1366 | ||
1367 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1368 | { | |
f25fce3e | 1369 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f JM |
1370 | } |
1371 | ||
98de59bf | 1372 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1373 | { |
8b3ec681 | 1374 | /* |
98de59bf AV |
1375 | * Does we have PROT_READ and does the application expect |
1376 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1377 | */ |
98de59bf AV |
1378 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1379 | return prot; | |
8b3ec681 | 1380 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1381 | return prot; |
1382 | /* | |
1383 | * if that's an anonymous mapping, let it. | |
1384 | */ | |
1385 | if (!file) | |
1386 | return prot | PROT_EXEC; | |
1387 | /* | |
1388 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1389 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1390 | */ |
90f8572b | 1391 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1392 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1393 | if (file->f_op->mmap_capabilities) { |
1394 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1395 | if (!(caps & NOMMU_MAP_EXEC)) | |
1396 | return prot; | |
1397 | } | |
8b3ec681 | 1398 | #endif |
98de59bf | 1399 | return prot | PROT_EXEC; |
8b3ec681 | 1400 | } |
98de59bf AV |
1401 | /* anything on noexec mount won't get PROT_EXEC */ |
1402 | return prot; | |
1403 | } | |
1404 | ||
1405 | int security_mmap_file(struct file *file, unsigned long prot, | |
1406 | unsigned long flags) | |
1407 | { | |
1408 | int ret; | |
f25fce3e | 1409 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1410 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1411 | if (ret) |
1412 | return ret; | |
1413 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1414 | } |
1415 | ||
e5467859 AV |
1416 | int security_mmap_addr(unsigned long addr) |
1417 | { | |
f25fce3e | 1418 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1419 | } |
1420 | ||
20510f2f JM |
1421 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1422 | unsigned long prot) | |
1423 | { | |
f25fce3e | 1424 | return call_int_hook(file_mprotect, 0, vma, reqprot, prot); |
20510f2f JM |
1425 | } |
1426 | ||
1427 | int security_file_lock(struct file *file, unsigned int cmd) | |
1428 | { | |
f25fce3e | 1429 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1430 | } |
1431 | ||
1432 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1433 | { | |
f25fce3e | 1434 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1435 | } |
1436 | ||
e0b93edd | 1437 | void security_file_set_fowner(struct file *file) |
20510f2f | 1438 | { |
f25fce3e | 1439 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1440 | } |
1441 | ||
1442 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1443 | struct fown_struct *fown, int sig) | |
1444 | { | |
f25fce3e | 1445 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1446 | } |
1447 | ||
1448 | int security_file_receive(struct file *file) | |
1449 | { | |
f25fce3e | 1450 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1451 | } |
1452 | ||
e3f20ae2 | 1453 | int security_file_open(struct file *file) |
20510f2f | 1454 | { |
c4ec54b4 EP |
1455 | int ret; |
1456 | ||
94817692 | 1457 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1458 | if (ret) |
1459 | return ret; | |
1460 | ||
1461 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1462 | } |
1463 | ||
e4e55b47 TH |
1464 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1465 | { | |
f4ad8f2c CS |
1466 | int rc = lsm_task_alloc(task); |
1467 | ||
1468 | if (rc) | |
1469 | return rc; | |
1470 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1471 | if (unlikely(rc)) | |
1472 | security_task_free(task); | |
1473 | return rc; | |
e4e55b47 TH |
1474 | } |
1475 | ||
1a2a4d06 KC |
1476 | void security_task_free(struct task_struct *task) |
1477 | { | |
f25fce3e | 1478 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1479 | |
1480 | kfree(task->security); | |
1481 | task->security = NULL; | |
1a2a4d06 KC |
1482 | } |
1483 | ||
ee18d64c DH |
1484 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1485 | { | |
bbd3662a CS |
1486 | int rc = lsm_cred_alloc(cred, gfp); |
1487 | ||
1488 | if (rc) | |
1489 | return rc; | |
1490 | ||
1491 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1492 | if (unlikely(rc)) |
bbd3662a CS |
1493 | security_cred_free(cred); |
1494 | return rc; | |
ee18d64c DH |
1495 | } |
1496 | ||
d84f4f99 | 1497 | void security_cred_free(struct cred *cred) |
20510f2f | 1498 | { |
a5795fd3 JM |
1499 | /* |
1500 | * There is a failure case in prepare_creds() that | |
1501 | * may result in a call here with ->security being NULL. | |
1502 | */ | |
1503 | if (unlikely(cred->security == NULL)) | |
1504 | return; | |
1505 | ||
f25fce3e | 1506 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1507 | |
1508 | kfree(cred->security); | |
1509 | cred->security = NULL; | |
20510f2f JM |
1510 | } |
1511 | ||
d84f4f99 | 1512 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1513 | { |
bbd3662a CS |
1514 | int rc = lsm_cred_alloc(new, gfp); |
1515 | ||
1516 | if (rc) | |
1517 | return rc; | |
1518 | ||
1519 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1520 | if (unlikely(rc)) |
bbd3662a CS |
1521 | security_cred_free(new); |
1522 | return rc; | |
d84f4f99 DH |
1523 | } |
1524 | ||
ee18d64c DH |
1525 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1526 | { | |
f25fce3e | 1527 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1528 | } |
1529 | ||
3ec30113 MG |
1530 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
1531 | { | |
1532 | *secid = 0; | |
1533 | call_void_hook(cred_getsecid, c, secid); | |
1534 | } | |
1535 | EXPORT_SYMBOL(security_cred_getsecid); | |
1536 | ||
3a3b7ce9 DH |
1537 | int security_kernel_act_as(struct cred *new, u32 secid) |
1538 | { | |
f25fce3e | 1539 | return call_int_hook(kernel_act_as, 0, new, secid); |
3a3b7ce9 DH |
1540 | } |
1541 | ||
1542 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1543 | { | |
f25fce3e | 1544 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1545 | } |
1546 | ||
dd8dbf2e | 1547 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1548 | { |
6eb864c1 MK |
1549 | int ret; |
1550 | ||
1551 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1552 | if (ret) | |
1553 | return ret; | |
1554 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1555 | } |
1556 | ||
39eeb4fb MZ |
1557 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id) |
1558 | { | |
1559 | int ret; | |
1560 | ||
1561 | ret = call_int_hook(kernel_read_file, 0, file, id); | |
1562 | if (ret) | |
1563 | return ret; | |
1564 | return ima_read_file(file, id); | |
1565 | } | |
1566 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1567 | ||
bc8ca5b9 MZ |
1568 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1569 | enum kernel_read_file_id id) | |
b44a7dfc | 1570 | { |
cf222217 MZ |
1571 | int ret; |
1572 | ||
1573 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1574 | if (ret) | |
1575 | return ret; | |
1576 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1577 | } |
1578 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1579 | ||
377179cd MZ |
1580 | int security_kernel_load_data(enum kernel_load_data_id id) |
1581 | { | |
16c267aa MZ |
1582 | int ret; |
1583 | ||
1584 | ret = call_int_hook(kernel_load_data, 0, id); | |
1585 | if (ret) | |
1586 | return ret; | |
1587 | return ima_load_data(id); | |
377179cd | 1588 | } |
83a68a06 | 1589 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1590 | |
d84f4f99 DH |
1591 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1592 | int flags) | |
20510f2f | 1593 | { |
f25fce3e | 1594 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1595 | } |
1596 | ||
20510f2f JM |
1597 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1598 | { | |
f25fce3e | 1599 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1600 | } |
1601 | ||
1602 | int security_task_getpgid(struct task_struct *p) | |
1603 | { | |
f25fce3e | 1604 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1605 | } |
1606 | ||
1607 | int security_task_getsid(struct task_struct *p) | |
1608 | { | |
f25fce3e | 1609 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1610 | } |
1611 | ||
1612 | void security_task_getsecid(struct task_struct *p, u32 *secid) | |
1613 | { | |
b1d9e6b0 | 1614 | *secid = 0; |
f25fce3e | 1615 | call_void_hook(task_getsecid, p, secid); |
20510f2f JM |
1616 | } |
1617 | EXPORT_SYMBOL(security_task_getsecid); | |
1618 | ||
20510f2f JM |
1619 | int security_task_setnice(struct task_struct *p, int nice) |
1620 | { | |
f25fce3e | 1621 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1622 | } |
1623 | ||
1624 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1625 | { | |
f25fce3e | 1626 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1627 | } |
1628 | ||
1629 | int security_task_getioprio(struct task_struct *p) | |
1630 | { | |
f25fce3e | 1631 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1632 | } |
1633 | ||
791ec491 SS |
1634 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1635 | unsigned int flags) | |
1636 | { | |
1637 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1638 | } | |
1639 | ||
8fd00b4d JS |
1640 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1641 | struct rlimit *new_rlim) | |
20510f2f | 1642 | { |
f25fce3e | 1643 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1644 | } |
1645 | ||
b0ae1981 | 1646 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1647 | { |
f25fce3e | 1648 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1649 | } |
1650 | ||
1651 | int security_task_getscheduler(struct task_struct *p) | |
1652 | { | |
f25fce3e | 1653 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1654 | } |
1655 | ||
1656 | int security_task_movememory(struct task_struct *p) | |
1657 | { | |
f25fce3e | 1658 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1659 | } |
1660 | ||
ae7795bc | 1661 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 1662 | int sig, const struct cred *cred) |
20510f2f | 1663 | { |
6b4f3d01 | 1664 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
1665 | } |
1666 | ||
20510f2f | 1667 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1668 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1669 | { |
b1d9e6b0 CS |
1670 | int thisrc; |
1671 | int rc = -ENOSYS; | |
1672 | struct security_hook_list *hp; | |
1673 | ||
df0ce173 | 1674 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 CS |
1675 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
1676 | if (thisrc != -ENOSYS) { | |
1677 | rc = thisrc; | |
1678 | if (thisrc != 0) | |
1679 | break; | |
1680 | } | |
1681 | } | |
1682 | return rc; | |
20510f2f JM |
1683 | } |
1684 | ||
1685 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1686 | { | |
f25fce3e | 1687 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1688 | } |
1689 | ||
1690 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1691 | { | |
f25fce3e | 1692 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1693 | } |
1694 | ||
8a076191 AD |
1695 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1696 | { | |
b1d9e6b0 | 1697 | *secid = 0; |
f25fce3e | 1698 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1699 | } |
1700 | ||
20510f2f JM |
1701 | int security_msg_msg_alloc(struct msg_msg *msg) |
1702 | { | |
ecd5f82e CS |
1703 | int rc = lsm_msg_msg_alloc(msg); |
1704 | ||
1705 | if (unlikely(rc)) | |
1706 | return rc; | |
1707 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
1708 | if (unlikely(rc)) | |
1709 | security_msg_msg_free(msg); | |
1710 | return rc; | |
20510f2f JM |
1711 | } |
1712 | ||
1713 | void security_msg_msg_free(struct msg_msg *msg) | |
1714 | { | |
f25fce3e | 1715 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
1716 | kfree(msg->security); |
1717 | msg->security = NULL; | |
20510f2f JM |
1718 | } |
1719 | ||
d8c6e854 | 1720 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 1721 | { |
ecd5f82e CS |
1722 | int rc = lsm_ipc_alloc(msq); |
1723 | ||
1724 | if (unlikely(rc)) | |
1725 | return rc; | |
1726 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
1727 | if (unlikely(rc)) | |
1728 | security_msg_queue_free(msq); | |
1729 | return rc; | |
20510f2f JM |
1730 | } |
1731 | ||
d8c6e854 | 1732 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 1733 | { |
f25fce3e | 1734 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
1735 | kfree(msq->security); |
1736 | msq->security = NULL; | |
20510f2f JM |
1737 | } |
1738 | ||
d8c6e854 | 1739 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 1740 | { |
f25fce3e | 1741 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
1742 | } |
1743 | ||
d8c6e854 | 1744 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 1745 | { |
f25fce3e | 1746 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
1747 | } |
1748 | ||
d8c6e854 | 1749 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
1750 | struct msg_msg *msg, int msqflg) |
1751 | { | |
f25fce3e | 1752 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
1753 | } |
1754 | ||
d8c6e854 | 1755 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
1756 | struct task_struct *target, long type, int mode) |
1757 | { | |
f25fce3e | 1758 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
1759 | } |
1760 | ||
7191adff | 1761 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 1762 | { |
ecd5f82e CS |
1763 | int rc = lsm_ipc_alloc(shp); |
1764 | ||
1765 | if (unlikely(rc)) | |
1766 | return rc; | |
1767 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
1768 | if (unlikely(rc)) | |
1769 | security_shm_free(shp); | |
1770 | return rc; | |
20510f2f JM |
1771 | } |
1772 | ||
7191adff | 1773 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 1774 | { |
f25fce3e | 1775 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
1776 | kfree(shp->security); |
1777 | shp->security = NULL; | |
20510f2f JM |
1778 | } |
1779 | ||
7191adff | 1780 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 1781 | { |
f25fce3e | 1782 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
1783 | } |
1784 | ||
7191adff | 1785 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 1786 | { |
f25fce3e | 1787 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
1788 | } |
1789 | ||
7191adff | 1790 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 1791 | { |
f25fce3e | 1792 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
1793 | } |
1794 | ||
aefad959 | 1795 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 1796 | { |
ecd5f82e CS |
1797 | int rc = lsm_ipc_alloc(sma); |
1798 | ||
1799 | if (unlikely(rc)) | |
1800 | return rc; | |
1801 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
1802 | if (unlikely(rc)) | |
1803 | security_sem_free(sma); | |
1804 | return rc; | |
20510f2f JM |
1805 | } |
1806 | ||
aefad959 | 1807 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 1808 | { |
f25fce3e | 1809 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
1810 | kfree(sma->security); |
1811 | sma->security = NULL; | |
20510f2f JM |
1812 | } |
1813 | ||
aefad959 | 1814 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 1815 | { |
f25fce3e | 1816 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
1817 | } |
1818 | ||
aefad959 | 1819 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 1820 | { |
f25fce3e | 1821 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
1822 | } |
1823 | ||
aefad959 | 1824 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
1825 | unsigned nsops, int alter) |
1826 | { | |
f25fce3e | 1827 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
1828 | } |
1829 | ||
1830 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
1831 | { | |
1832 | if (unlikely(inode && IS_PRIVATE(inode))) | |
1833 | return; | |
f25fce3e | 1834 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
1835 | } |
1836 | EXPORT_SYMBOL(security_d_instantiate); | |
1837 | ||
6d9c939d CS |
1838 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
1839 | char **value) | |
20510f2f | 1840 | { |
6d9c939d CS |
1841 | struct security_hook_list *hp; |
1842 | ||
1843 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
1844 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1845 | continue; | |
1846 | return hp->hook.getprocattr(p, name, value); | |
1847 | } | |
1848 | return -EINVAL; | |
20510f2f JM |
1849 | } |
1850 | ||
6d9c939d CS |
1851 | int security_setprocattr(const char *lsm, const char *name, void *value, |
1852 | size_t size) | |
20510f2f | 1853 | { |
6d9c939d CS |
1854 | struct security_hook_list *hp; |
1855 | ||
1856 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
1857 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1858 | continue; | |
1859 | return hp->hook.setprocattr(name, value, size); | |
1860 | } | |
1861 | return -EINVAL; | |
20510f2f JM |
1862 | } |
1863 | ||
1864 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
1865 | { | |
f25fce3e | 1866 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 1867 | } |
20510f2f | 1868 | |
746df9b5 DQ |
1869 | int security_ismaclabel(const char *name) |
1870 | { | |
f25fce3e | 1871 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
1872 | } |
1873 | EXPORT_SYMBOL(security_ismaclabel); | |
1874 | ||
20510f2f JM |
1875 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
1876 | { | |
b1d9e6b0 CS |
1877 | return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata, |
1878 | seclen); | |
20510f2f JM |
1879 | } |
1880 | EXPORT_SYMBOL(security_secid_to_secctx); | |
1881 | ||
7bf570dc | 1882 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 1883 | { |
b1d9e6b0 | 1884 | *secid = 0; |
f25fce3e | 1885 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
1886 | } |
1887 | EXPORT_SYMBOL(security_secctx_to_secid); | |
1888 | ||
20510f2f JM |
1889 | void security_release_secctx(char *secdata, u32 seclen) |
1890 | { | |
f25fce3e | 1891 | call_void_hook(release_secctx, secdata, seclen); |
20510f2f JM |
1892 | } |
1893 | EXPORT_SYMBOL(security_release_secctx); | |
1894 | ||
6f3be9f5 AG |
1895 | void security_inode_invalidate_secctx(struct inode *inode) |
1896 | { | |
1897 | call_void_hook(inode_invalidate_secctx, inode); | |
1898 | } | |
1899 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
1900 | ||
1ee65e37 DQ |
1901 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
1902 | { | |
f25fce3e | 1903 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
1904 | } |
1905 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
1906 | ||
1907 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
1908 | { | |
f25fce3e | 1909 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
1910 | } |
1911 | EXPORT_SYMBOL(security_inode_setsecctx); | |
1912 | ||
1913 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
1914 | { | |
b1d9e6b0 | 1915 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
1916 | } |
1917 | EXPORT_SYMBOL(security_inode_getsecctx); | |
1918 | ||
20510f2f JM |
1919 | #ifdef CONFIG_SECURITY_NETWORK |
1920 | ||
3610cda5 | 1921 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 1922 | { |
f25fce3e | 1923 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
1924 | } |
1925 | EXPORT_SYMBOL(security_unix_stream_connect); | |
1926 | ||
1927 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
1928 | { | |
f25fce3e | 1929 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
1930 | } |
1931 | EXPORT_SYMBOL(security_unix_may_send); | |
1932 | ||
1933 | int security_socket_create(int family, int type, int protocol, int kern) | |
1934 | { | |
f25fce3e | 1935 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
1936 | } |
1937 | ||
1938 | int security_socket_post_create(struct socket *sock, int family, | |
1939 | int type, int protocol, int kern) | |
1940 | { | |
f25fce3e | 1941 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
1942 | protocol, kern); |
1943 | } | |
1944 | ||
aae7cfcb DH |
1945 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
1946 | { | |
1947 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
1948 | } | |
1949 | EXPORT_SYMBOL(security_socket_socketpair); | |
1950 | ||
20510f2f JM |
1951 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
1952 | { | |
f25fce3e | 1953 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
1954 | } |
1955 | ||
1956 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
1957 | { | |
f25fce3e | 1958 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
1959 | } |
1960 | ||
1961 | int security_socket_listen(struct socket *sock, int backlog) | |
1962 | { | |
f25fce3e | 1963 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
1964 | } |
1965 | ||
1966 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
1967 | { | |
f25fce3e | 1968 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
1969 | } |
1970 | ||
20510f2f JM |
1971 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
1972 | { | |
f25fce3e | 1973 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
1974 | } |
1975 | ||
1976 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
1977 | int size, int flags) | |
1978 | { | |
f25fce3e | 1979 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
1980 | } |
1981 | ||
1982 | int security_socket_getsockname(struct socket *sock) | |
1983 | { | |
f25fce3e | 1984 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
1985 | } |
1986 | ||
1987 | int security_socket_getpeername(struct socket *sock) | |
1988 | { | |
f25fce3e | 1989 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
1990 | } |
1991 | ||
1992 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
1993 | { | |
f25fce3e | 1994 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
1995 | } |
1996 | ||
1997 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
1998 | { | |
f25fce3e | 1999 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2000 | } |
2001 | ||
2002 | int security_socket_shutdown(struct socket *sock, int how) | |
2003 | { | |
f25fce3e | 2004 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2005 | } |
2006 | ||
2007 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2008 | { | |
f25fce3e | 2009 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2010 | } |
2011 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2012 | ||
2013 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2014 | int __user *optlen, unsigned len) | |
2015 | { | |
b1d9e6b0 CS |
2016 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
2017 | optval, optlen, len); | |
20510f2f JM |
2018 | } |
2019 | ||
2020 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
2021 | { | |
e308fd3b JB |
2022 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
2023 | skb, secid); | |
20510f2f JM |
2024 | } |
2025 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2026 | ||
2027 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2028 | { | |
f25fce3e | 2029 | return call_int_hook(sk_alloc_security, 0, sk, family, priority); |
20510f2f JM |
2030 | } |
2031 | ||
2032 | void security_sk_free(struct sock *sk) | |
2033 | { | |
f25fce3e | 2034 | call_void_hook(sk_free_security, sk); |
20510f2f JM |
2035 | } |
2036 | ||
2037 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2038 | { | |
f25fce3e | 2039 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2040 | } |
6230c9b4 | 2041 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f JM |
2042 | |
2043 | void security_sk_classify_flow(struct sock *sk, struct flowi *fl) | |
2044 | { | |
f25fce3e | 2045 | call_void_hook(sk_getsecid, sk, &fl->flowi_secid); |
20510f2f JM |
2046 | } |
2047 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2048 | ||
2049 | void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) | |
2050 | { | |
f25fce3e | 2051 | call_void_hook(req_classify_flow, req, fl); |
20510f2f JM |
2052 | } |
2053 | EXPORT_SYMBOL(security_req_classify_flow); | |
2054 | ||
2055 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2056 | { | |
f25fce3e | 2057 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2058 | } |
2059 | EXPORT_SYMBOL(security_sock_graft); | |
2060 | ||
2061 | int security_inet_conn_request(struct sock *sk, | |
2062 | struct sk_buff *skb, struct request_sock *req) | |
2063 | { | |
f25fce3e | 2064 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2065 | } |
2066 | EXPORT_SYMBOL(security_inet_conn_request); | |
2067 | ||
2068 | void security_inet_csk_clone(struct sock *newsk, | |
2069 | const struct request_sock *req) | |
2070 | { | |
f25fce3e | 2071 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2072 | } |
2073 | ||
2074 | void security_inet_conn_established(struct sock *sk, | |
2075 | struct sk_buff *skb) | |
2076 | { | |
f25fce3e | 2077 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2078 | } |
72e89f50 | 2079 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2080 | |
2606fd1f EP |
2081 | int security_secmark_relabel_packet(u32 secid) |
2082 | { | |
f25fce3e | 2083 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2084 | } |
2085 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2086 | ||
2087 | void security_secmark_refcount_inc(void) | |
2088 | { | |
f25fce3e | 2089 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2090 | } |
2091 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2092 | ||
2093 | void security_secmark_refcount_dec(void) | |
2094 | { | |
f25fce3e | 2095 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2096 | } |
2097 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2098 | ||
5dbbaf2d PM |
2099 | int security_tun_dev_alloc_security(void **security) |
2100 | { | |
f25fce3e | 2101 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2102 | } |
2103 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2104 | ||
2105 | void security_tun_dev_free_security(void *security) | |
2106 | { | |
f25fce3e | 2107 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2108 | } |
2109 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2110 | ||
2b980dbd PM |
2111 | int security_tun_dev_create(void) |
2112 | { | |
f25fce3e | 2113 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2114 | } |
2115 | EXPORT_SYMBOL(security_tun_dev_create); | |
2116 | ||
5dbbaf2d | 2117 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2118 | { |
f25fce3e | 2119 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2120 | } |
5dbbaf2d | 2121 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2122 | |
5dbbaf2d | 2123 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2124 | { |
f25fce3e | 2125 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2126 | } |
2127 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2128 | ||
5dbbaf2d PM |
2129 | int security_tun_dev_open(void *security) |
2130 | { | |
f25fce3e | 2131 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2132 | } |
2133 | EXPORT_SYMBOL(security_tun_dev_open); | |
2134 | ||
72e89f50 RH |
2135 | int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) |
2136 | { | |
2137 | return call_int_hook(sctp_assoc_request, 0, ep, skb); | |
2138 | } | |
2139 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2140 | ||
2141 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2142 | struct sockaddr *address, int addrlen) | |
2143 | { | |
2144 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2145 | address, addrlen); | |
2146 | } | |
2147 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2148 | ||
2149 | void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, | |
2150 | struct sock *newsk) | |
2151 | { | |
2152 | call_void_hook(sctp_sk_clone, ep, sk, newsk); | |
2153 | } | |
2154 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2155 | ||
20510f2f JM |
2156 | #endif /* CONFIG_SECURITY_NETWORK */ |
2157 | ||
d291f1a6 DJ |
2158 | #ifdef CONFIG_SECURITY_INFINIBAND |
2159 | ||
2160 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2161 | { | |
2162 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2163 | } | |
2164 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2165 | ||
47a2b338 DJ |
2166 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2167 | { | |
2168 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2169 | } | |
2170 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2171 | ||
d291f1a6 DJ |
2172 | int security_ib_alloc_security(void **sec) |
2173 | { | |
2174 | return call_int_hook(ib_alloc_security, 0, sec); | |
2175 | } | |
2176 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2177 | ||
2178 | void security_ib_free_security(void *sec) | |
2179 | { | |
2180 | call_void_hook(ib_free_security, sec); | |
2181 | } | |
2182 | EXPORT_SYMBOL(security_ib_free_security); | |
2183 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2184 | ||
20510f2f JM |
2185 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2186 | ||
52a4c640 NA |
2187 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2188 | struct xfrm_user_sec_ctx *sec_ctx, | |
2189 | gfp_t gfp) | |
20510f2f | 2190 | { |
f25fce3e | 2191 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2192 | } |
2193 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2194 | ||
03e1ad7b PM |
2195 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2196 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2197 | { |
f25fce3e | 2198 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2199 | } |
2200 | ||
03e1ad7b | 2201 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2202 | { |
f25fce3e | 2203 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2204 | } |
2205 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2206 | ||
03e1ad7b | 2207 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2208 | { |
f25fce3e | 2209 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2210 | } |
2211 | ||
2e5aa866 PM |
2212 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2213 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2214 | { |
f25fce3e | 2215 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2216 | } |
2217 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2218 | ||
2219 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2220 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2221 | { | |
f25fce3e | 2222 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2223 | } |
2224 | ||
2225 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2226 | { | |
f25fce3e | 2227 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2228 | } |
2229 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2230 | ||
2231 | void security_xfrm_state_free(struct xfrm_state *x) | |
2232 | { | |
f25fce3e | 2233 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2234 | } |
2235 | ||
03e1ad7b | 2236 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
20510f2f | 2237 | { |
f25fce3e | 2238 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
20510f2f JM |
2239 | } |
2240 | ||
2241 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 DM |
2242 | struct xfrm_policy *xp, |
2243 | const struct flowi *fl) | |
20510f2f | 2244 | { |
b1d9e6b0 CS |
2245 | struct security_hook_list *hp; |
2246 | int rc = 1; | |
2247 | ||
2248 | /* | |
2249 | * Since this function is expected to return 0 or 1, the judgment | |
2250 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2251 | * we can use the first LSM's judgment because currently only SELinux | |
2252 | * supplies this call. | |
2253 | * | |
2254 | * For speed optimization, we explicitly break the loop rather than | |
2255 | * using the macro | |
2256 | */ | |
df0ce173 | 2257 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 CS |
2258 | list) { |
2259 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl); | |
2260 | break; | |
2261 | } | |
2262 | return rc; | |
20510f2f JM |
2263 | } |
2264 | ||
2265 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2266 | { | |
f25fce3e | 2267 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2268 | } |
2269 | ||
2270 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) | |
2271 | { | |
f25fce3e CS |
2272 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, |
2273 | 0); | |
20510f2f JM |
2274 | |
2275 | BUG_ON(rc); | |
2276 | } | |
2277 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2278 | ||
2279 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2280 | ||
2281 | #ifdef CONFIG_KEYS | |
2282 | ||
d84f4f99 DH |
2283 | int security_key_alloc(struct key *key, const struct cred *cred, |
2284 | unsigned long flags) | |
20510f2f | 2285 | { |
f25fce3e | 2286 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2287 | } |
2288 | ||
2289 | void security_key_free(struct key *key) | |
2290 | { | |
f25fce3e | 2291 | call_void_hook(key_free, key); |
20510f2f JM |
2292 | } |
2293 | ||
2294 | int security_key_permission(key_ref_t key_ref, | |
f5895943 | 2295 | const struct cred *cred, unsigned perm) |
20510f2f | 2296 | { |
f25fce3e | 2297 | return call_int_hook(key_permission, 0, key_ref, cred, perm); |
20510f2f JM |
2298 | } |
2299 | ||
70a5bb72 DH |
2300 | int security_key_getsecurity(struct key *key, char **_buffer) |
2301 | { | |
b1d9e6b0 | 2302 | *_buffer = NULL; |
f25fce3e | 2303 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2304 | } |
2305 | ||
20510f2f | 2306 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2307 | |
2308 | #ifdef CONFIG_AUDIT | |
2309 | ||
2310 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2311 | { | |
f25fce3e | 2312 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
03d37d25 AD |
2313 | } |
2314 | ||
2315 | int security_audit_rule_known(struct audit_krule *krule) | |
2316 | { | |
f25fce3e | 2317 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2318 | } |
2319 | ||
2320 | void security_audit_rule_free(void *lsmrule) | |
2321 | { | |
f25fce3e | 2322 | call_void_hook(audit_rule_free, lsmrule); |
03d37d25 AD |
2323 | } |
2324 | ||
90462a5b | 2325 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule) |
03d37d25 | 2326 | { |
90462a5b | 2327 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule); |
03d37d25 | 2328 | } |
b1d9e6b0 | 2329 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2330 | |
2331 | #ifdef CONFIG_BPF_SYSCALL | |
2332 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2333 | { | |
2334 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2335 | } | |
2336 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2337 | { | |
2338 | return call_int_hook(bpf_map, 0, map, fmode); | |
2339 | } | |
2340 | int security_bpf_prog(struct bpf_prog *prog) | |
2341 | { | |
2342 | return call_int_hook(bpf_prog, 0, prog); | |
2343 | } | |
2344 | int security_bpf_map_alloc(struct bpf_map *map) | |
2345 | { | |
2346 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2347 | } | |
2348 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2349 | { | |
2350 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2351 | } | |
2352 | void security_bpf_map_free(struct bpf_map *map) | |
2353 | { | |
2354 | call_void_hook(bpf_map_free_security, map); | |
2355 | } | |
2356 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2357 | { | |
2358 | call_void_hook(bpf_prog_free_security, aux); | |
2359 | } | |
2360 | #endif /* CONFIG_BPF_SYSCALL */ |