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