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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> |
68fa0bb2 | 31 | #include <net/sock.h> |
1da177e4 | 32 | |
823eb1cc | 33 | #define MAX_LSM_EVM_XATTR 2 |
1da177e4 | 34 | |
2d4d5119 KC |
35 | /* How many LSMs were built into the kernel? */ |
36 | #define LSM_COUNT (__end_lsm_info - __start_lsm_info) | |
37 | ||
3dfc9b02 | 38 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
42df744c | 39 | static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain); |
8f408ab6 | 40 | |
33bf60ca | 41 | static struct kmem_cache *lsm_file_cache; |
afb1cbe3 | 42 | static struct kmem_cache *lsm_inode_cache; |
33bf60ca | 43 | |
d69dece5 | 44 | char *lsm_names; |
502fb1b1 CS |
45 | |
46 | /* | |
47 | * Socket blobs include infrastructure managed data | |
48 | * Cred blobs include context display instructions | |
49 | */ | |
50 | static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init = { | |
51 | .lbs_cred = sizeof(struct lsm_one_hooks), | |
52 | }; | |
bbd3662a | 53 | |
076c54c5 | 54 | /* Boot-time LSM user choice */ |
79f7865d | 55 | static __initdata const char *chosen_lsm_order; |
5ef4e419 | 56 | static __initdata const char *chosen_major_lsm; |
1da177e4 | 57 | |
13e735c0 KC |
58 | static __initconst const char * const builtin_lsm_order = CONFIG_LSM; |
59 | ||
2d4d5119 KC |
60 | /* Ordered list of LSMs to initialize. */ |
61 | static __initdata struct lsm_info **ordered_lsms; | |
14bd99c8 | 62 | static __initdata struct lsm_info *exclusive; |
2d4d5119 | 63 | |
9b8c7c14 KC |
64 | static __initdata bool debug; |
65 | #define init_debug(...) \ | |
66 | do { \ | |
67 | if (debug) \ | |
68 | pr_info(__VA_ARGS__); \ | |
69 | } while (0) | |
70 | ||
f4941d75 KC |
71 | static bool __init is_enabled(struct lsm_info *lsm) |
72 | { | |
a8027fb0 KC |
73 | if (!lsm->enabled) |
74 | return false; | |
f4941d75 | 75 | |
a8027fb0 | 76 | return *lsm->enabled; |
f4941d75 KC |
77 | } |
78 | ||
79 | /* Mark an LSM's enabled flag. */ | |
80 | static int lsm_enabled_true __initdata = 1; | |
81 | static int lsm_enabled_false __initdata = 0; | |
82 | static void __init set_enabled(struct lsm_info *lsm, bool enabled) | |
83 | { | |
84 | /* | |
85 | * When an LSM hasn't configured an enable variable, we can use | |
86 | * a hard-coded location for storing the default enabled state. | |
87 | */ | |
88 | if (!lsm->enabled) { | |
89 | if (enabled) | |
90 | lsm->enabled = &lsm_enabled_true; | |
91 | else | |
92 | lsm->enabled = &lsm_enabled_false; | |
93 | } else if (lsm->enabled == &lsm_enabled_true) { | |
94 | if (!enabled) | |
95 | lsm->enabled = &lsm_enabled_false; | |
96 | } else if (lsm->enabled == &lsm_enabled_false) { | |
97 | if (enabled) | |
98 | lsm->enabled = &lsm_enabled_true; | |
99 | } else { | |
100 | *lsm->enabled = enabled; | |
101 | } | |
102 | } | |
103 | ||
2d4d5119 KC |
104 | /* Is an LSM already listed in the ordered LSMs list? */ |
105 | static bool __init exists_ordered_lsm(struct lsm_info *lsm) | |
106 | { | |
107 | struct lsm_info **check; | |
108 | ||
109 | for (check = ordered_lsms; *check; check++) | |
110 | if (*check == lsm) | |
111 | return true; | |
112 | ||
113 | return false; | |
114 | } | |
115 | ||
116 | /* Append an LSM to the list of ordered LSMs to initialize. */ | |
117 | static int last_lsm __initdata; | |
118 | static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from) | |
119 | { | |
120 | /* Ignore duplicate selections. */ | |
121 | if (exists_ordered_lsm(lsm)) | |
122 | return; | |
123 | ||
124 | if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from)) | |
125 | return; | |
126 | ||
a8027fb0 KC |
127 | /* Enable this LSM, if it is not already set. */ |
128 | if (!lsm->enabled) | |
129 | lsm->enabled = &lsm_enabled_true; | |
2d4d5119 | 130 | ordered_lsms[last_lsm++] = lsm; |
a8027fb0 | 131 | |
2d4d5119 KC |
132 | init_debug("%s ordering: %s (%sabled)\n", from, lsm->name, |
133 | is_enabled(lsm) ? "en" : "dis"); | |
134 | } | |
135 | ||
f4941d75 KC |
136 | /* Is an LSM allowed to be initialized? */ |
137 | static bool __init lsm_allowed(struct lsm_info *lsm) | |
138 | { | |
139 | /* Skip if the LSM is disabled. */ | |
140 | if (!is_enabled(lsm)) | |
141 | return false; | |
142 | ||
14bd99c8 KC |
143 | /* Not allowed if another exclusive LSM already initialized. */ |
144 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) { | |
145 | init_debug("exclusive disabled: %s\n", lsm->name); | |
146 | return false; | |
147 | } | |
148 | ||
f4941d75 KC |
149 | return true; |
150 | } | |
151 | ||
bbd3662a CS |
152 | static void __init lsm_set_blob_size(int *need, int *lbs) |
153 | { | |
154 | int offset; | |
155 | ||
156 | if (*need > 0) { | |
157 | offset = *lbs; | |
158 | *lbs += *need; | |
159 | *need = offset; | |
160 | } | |
161 | } | |
162 | ||
163 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
164 | { | |
165 | if (!needed) | |
166 | return; | |
167 | ||
168 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 169 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
170 | /* |
171 | * The inode blob gets an rcu_head in addition to | |
172 | * what the modules might need. | |
173 | */ | |
174 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
175 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
176 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
177 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
178 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
68fa0bb2 | 179 | lsm_set_blob_size(&needed->lbs_sock, &blob_sizes.lbs_sock); |
f4ad8f2c | 180 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
181 | } |
182 | ||
d8e9bbd4 KC |
183 | /* Prepare LSM for initialization. */ |
184 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
185 | { |
186 | int enabled = lsm_allowed(lsm); | |
187 | ||
188 | /* Record enablement (to handle any following exclusive LSMs). */ | |
189 | set_enabled(lsm, enabled); | |
190 | ||
d8e9bbd4 | 191 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 192 | if (enabled) { |
14bd99c8 KC |
193 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
194 | exclusive = lsm; | |
195 | init_debug("exclusive chosen: %s\n", lsm->name); | |
196 | } | |
bbd3662a CS |
197 | |
198 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
199 | } |
200 | } | |
201 | ||
202 | /* Initialize a given LSM, if it is enabled. */ | |
203 | static void __init initialize_lsm(struct lsm_info *lsm) | |
204 | { | |
205 | if (is_enabled(lsm)) { | |
206 | int ret; | |
14bd99c8 | 207 | |
f4941d75 KC |
208 | init_debug("initializing %s\n", lsm->name); |
209 | ret = lsm->init(); | |
210 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
211 | } | |
212 | } | |
213 | ||
13e735c0 | 214 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 215 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
216 | { |
217 | struct lsm_info *lsm; | |
13e735c0 KC |
218 | char *sep, *name, *next; |
219 | ||
e2bc445b KC |
220 | /* LSM_ORDER_FIRST is always first. */ |
221 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
222 | if (lsm->order == LSM_ORDER_FIRST) | |
223 | append_ordered_lsm(lsm, "first"); | |
224 | } | |
225 | ||
7e611486 | 226 | /* Process "security=", if given. */ |
7e611486 KC |
227 | if (chosen_major_lsm) { |
228 | struct lsm_info *major; | |
229 | ||
230 | /* | |
231 | * To match the original "security=" behavior, this | |
232 | * explicitly does NOT fallback to another Legacy Major | |
233 | * if the selected one was separately disabled: disable | |
234 | * all non-matching Legacy Major LSMs. | |
235 | */ | |
236 | for (major = __start_lsm_info; major < __end_lsm_info; | |
237 | major++) { | |
238 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
239 | strcmp(major->name, chosen_major_lsm) != 0) { | |
240 | set_enabled(major, false); | |
241 | init_debug("security=%s disabled: %s\n", | |
242 | chosen_major_lsm, major->name); | |
243 | } | |
244 | } | |
245 | } | |
5ef4e419 | 246 | |
13e735c0 KC |
247 | sep = kstrdup(order, GFP_KERNEL); |
248 | next = sep; | |
249 | /* Walk the list, looking for matching LSMs. */ | |
250 | while ((name = strsep(&next, ",")) != NULL) { | |
251 | bool found = false; | |
252 | ||
253 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
254 | if (lsm->order == LSM_ORDER_MUTABLE && |
255 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
256 | append_ordered_lsm(lsm, origin); |
257 | found = true; | |
258 | } | |
259 | } | |
260 | ||
261 | if (!found) | |
262 | init_debug("%s ignored: %s\n", origin, name); | |
657d910b | 263 | } |
c91d8106 CS |
264 | |
265 | /* Process "security=", if given. */ | |
266 | if (chosen_major_lsm) { | |
267 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
268 | if (exists_ordered_lsm(lsm)) | |
269 | continue; | |
270 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
271 | append_ordered_lsm(lsm, "security="); | |
272 | } | |
273 | } | |
274 | ||
275 | /* Disable all LSMs not in the ordered list. */ | |
276 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
277 | if (exists_ordered_lsm(lsm)) | |
278 | continue; | |
279 | set_enabled(lsm, false); | |
280 | init_debug("%s disabled: %s\n", origin, lsm->name); | |
281 | } | |
282 | ||
13e735c0 | 283 | kfree(sep); |
657d910b KC |
284 | } |
285 | ||
1cfb2a51 TH |
286 | static void __init lsm_early_cred(struct cred *cred); |
287 | static void __init lsm_early_task(struct task_struct *task); | |
288 | ||
2d4d5119 KC |
289 | static void __init ordered_lsm_init(void) |
290 | { | |
291 | struct lsm_info **lsm; | |
292 | ||
293 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
294 | GFP_KERNEL); | |
295 | ||
89a9684e KC |
296 | if (chosen_lsm_order) { |
297 | if (chosen_major_lsm) { | |
298 | pr_info("security= is ignored because it is superseded by lsm=\n"); | |
299 | chosen_major_lsm = NULL; | |
300 | } | |
79f7865d | 301 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 302 | } else |
79f7865d | 303 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
304 | |
305 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
306 | prepare_lsm(*lsm); |
307 | ||
bbd3662a | 308 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
33bf60ca | 309 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); |
afb1cbe3 | 310 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); |
ecd5f82e CS |
311 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); |
312 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
68fa0bb2 | 313 | init_debug("sock blob size = %d\n", blob_sizes.lbs_sock); |
f4ad8f2c | 314 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); |
33bf60ca CS |
315 | |
316 | /* | |
317 | * Create any kmem_caches needed for blobs | |
318 | */ | |
319 | if (blob_sizes.lbs_file) | |
320 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
321 | blob_sizes.lbs_file, 0, | |
322 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
323 | if (blob_sizes.lbs_inode) |
324 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
325 | blob_sizes.lbs_inode, 0, | |
326 | SLAB_PANIC, NULL); | |
bbd3662a | 327 | |
1cfb2a51 TH |
328 | lsm_early_cred((struct cred *) current->cred); |
329 | lsm_early_task(current); | |
d8e9bbd4 KC |
330 | for (lsm = ordered_lsms; *lsm; lsm++) |
331 | initialize_lsm(*lsm); | |
2d4d5119 KC |
332 | |
333 | kfree(ordered_lsms); | |
334 | } | |
335 | ||
1da177e4 LT |
336 | /** |
337 | * security_init - initializes the security framework | |
338 | * | |
339 | * This should be called early in the kernel initialization sequence. | |
340 | */ | |
341 | int __init security_init(void) | |
342 | { | |
3dfc9b02 | 343 | int i; |
df0ce173 | 344 | struct hlist_head *list = (struct hlist_head *) &security_hook_heads; |
3dfc9b02 | 345 | |
98d29170 KC |
346 | pr_info("Security Framework initializing\n"); |
347 | ||
df0ce173 | 348 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head); |
3dfc9b02 | 349 | i++) |
df0ce173 | 350 | INIT_HLIST_HEAD(&list[i]); |
1da177e4 | 351 | |
657d910b KC |
352 | /* Load LSMs in specified order. */ |
353 | ordered_lsm_init(); | |
354 | ||
1da177e4 LT |
355 | return 0; |
356 | } | |
357 | ||
076c54c5 | 358 | /* Save user chosen LSM */ |
5ef4e419 | 359 | static int __init choose_major_lsm(char *str) |
076c54c5 | 360 | { |
5ef4e419 | 361 | chosen_major_lsm = str; |
076c54c5 AD |
362 | return 1; |
363 | } | |
5ef4e419 | 364 | __setup("security=", choose_major_lsm); |
076c54c5 | 365 | |
79f7865d KC |
366 | /* Explicitly choose LSM initialization order. */ |
367 | static int __init choose_lsm_order(char *str) | |
368 | { | |
369 | chosen_lsm_order = str; | |
370 | return 1; | |
371 | } | |
372 | __setup("lsm=", choose_lsm_order); | |
373 | ||
9b8c7c14 KC |
374 | /* Enable LSM order debugging. */ |
375 | static int __init enable_debug(char *str) | |
376 | { | |
377 | debug = true; | |
378 | return 1; | |
379 | } | |
380 | __setup("lsm.debug", enable_debug); | |
381 | ||
3bb857e4 MS |
382 | static bool match_last_lsm(const char *list, const char *lsm) |
383 | { | |
384 | const char *last; | |
385 | ||
386 | if (WARN_ON(!list || !lsm)) | |
387 | return false; | |
388 | last = strrchr(list, ','); | |
389 | if (last) | |
390 | /* Pass the comma, strcmp() will check for '\0' */ | |
391 | last++; | |
392 | else | |
393 | last = list; | |
394 | return !strcmp(last, lsm); | |
395 | } | |
396 | ||
d69dece5 CS |
397 | static int lsm_append(char *new, char **result) |
398 | { | |
399 | char *cp; | |
400 | ||
401 | if (*result == NULL) { | |
402 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
403 | if (*result == NULL) |
404 | return -ENOMEM; | |
d69dece5 | 405 | } else { |
3bb857e4 MS |
406 | /* Check if it is the last registered name */ |
407 | if (match_last_lsm(*result, new)) | |
408 | return 0; | |
d69dece5 CS |
409 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
410 | if (cp == NULL) | |
411 | return -ENOMEM; | |
412 | kfree(*result); | |
413 | *result = cp; | |
414 | } | |
415 | return 0; | |
416 | } | |
417 | ||
aefe0d01 CS |
418 | /* Base list of once-only hooks */ |
419 | static struct lsm_one_hooks lsm_base_one; | |
420 | ||
d69dece5 CS |
421 | /** |
422 | * security_add_hooks - Add a modules hooks to the hook lists. | |
423 | * @hooks: the hooks to add | |
424 | * @count: the number of hooks to add | |
425 | * @lsm: the name of the security module | |
426 | * | |
427 | * Each LSM has to register its hooks with the infrastructure. | |
428 | */ | |
429 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
430 | char *lsm) | |
431 | { | |
432 | int i; | |
433 | ||
434 | for (i = 0; i < count; i++) { | |
435 | hooks[i].lsm = lsm; | |
df0ce173 | 436 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
aefe0d01 CS |
437 | |
438 | /* | |
439 | * Check for the special hooks that are restricted to | |
440 | * a single module to create the base set. Use the hooks | |
441 | * from that module for the set, which may not be complete. | |
442 | */ | |
443 | if (lsm_base_one.lsm && strcmp(lsm_base_one.lsm, hooks[i].lsm)) | |
444 | continue; | |
445 | if (hooks[i].head == &security_hook_heads.secid_to_secctx) | |
446 | lsm_base_one.secid_to_secctx = hooks[i].hook; | |
447 | else if (hooks[i].head == &security_hook_heads.secctx_to_secid) | |
448 | lsm_base_one.secctx_to_secid = hooks[i].hook; | |
449 | else if (hooks[i].head == | |
450 | &security_hook_heads.socket_getpeersec_stream) | |
451 | lsm_base_one.socket_getpeersec_stream = hooks[i].hook; | |
452 | else | |
453 | continue; | |
454 | if (lsm_base_one.lsm == NULL) | |
455 | lsm_base_one.lsm = kstrdup(hooks[i].lsm, GFP_KERNEL); | |
d69dece5 CS |
456 | } |
457 | if (lsm_append(lsm, &lsm_names) < 0) | |
458 | panic("%s - Cannot get early memory.\n", __func__); | |
459 | } | |
460 | ||
42df744c | 461 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 462 | { |
42df744c JK |
463 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
464 | event, data); | |
8f408ab6 | 465 | } |
42df744c | 466 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 467 | |
42df744c | 468 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 469 | { |
42df744c JK |
470 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
471 | nb); | |
8f408ab6 | 472 | } |
42df744c | 473 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 474 | |
42df744c | 475 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 476 | { |
42df744c JK |
477 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
478 | nb); | |
8f408ab6 | 479 | } |
42df744c | 480 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 481 | |
bbd3662a CS |
482 | /** |
483 | * lsm_cred_alloc - allocate a composite cred blob | |
484 | * @cred: the cred that needs a blob | |
485 | * @gfp: allocation type | |
486 | * | |
487 | * Allocate the cred blob for all the modules | |
488 | * | |
489 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
490 | */ | |
491 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
492 | { | |
493 | if (blob_sizes.lbs_cred == 0) { | |
494 | cred->security = NULL; | |
495 | return 0; | |
496 | } | |
497 | ||
498 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
499 | if (cred->security == NULL) | |
500 | return -ENOMEM; | |
501 | return 0; | |
502 | } | |
503 | ||
504 | /** | |
505 | * lsm_early_cred - during initialization allocate a composite cred blob | |
506 | * @cred: the cred that needs a blob | |
507 | * | |
1cfb2a51 | 508 | * Allocate the cred blob for all the modules |
bbd3662a | 509 | */ |
1cfb2a51 | 510 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 511 | { |
1cfb2a51 | 512 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 513 | |
bbd3662a CS |
514 | if (rc) |
515 | panic("%s: Early cred alloc failed.\n", __func__); | |
516 | } | |
517 | ||
33bf60ca CS |
518 | /** |
519 | * lsm_file_alloc - allocate a composite file blob | |
520 | * @file: the file that needs a blob | |
521 | * | |
522 | * Allocate the file blob for all the modules | |
523 | * | |
524 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
525 | */ | |
526 | static int lsm_file_alloc(struct file *file) | |
527 | { | |
528 | if (!lsm_file_cache) { | |
529 | file->f_security = NULL; | |
530 | return 0; | |
531 | } | |
532 | ||
533 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
534 | if (file->f_security == NULL) | |
535 | return -ENOMEM; | |
536 | return 0; | |
537 | } | |
538 | ||
afb1cbe3 CS |
539 | /** |
540 | * lsm_inode_alloc - allocate a composite inode blob | |
541 | * @inode: the inode that needs a blob | |
542 | * | |
543 | * Allocate the inode blob for all the modules | |
544 | * | |
545 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
546 | */ | |
547 | int lsm_inode_alloc(struct inode *inode) | |
548 | { | |
549 | if (!lsm_inode_cache) { | |
550 | inode->i_security = NULL; | |
551 | return 0; | |
552 | } | |
553 | ||
554 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
555 | if (inode->i_security == NULL) | |
556 | return -ENOMEM; | |
557 | return 0; | |
558 | } | |
559 | ||
f4ad8f2c CS |
560 | /** |
561 | * lsm_task_alloc - allocate a composite task blob | |
562 | * @task: the task that needs a blob | |
563 | * | |
564 | * Allocate the task blob for all the modules | |
565 | * | |
566 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
567 | */ | |
3e8c7367 | 568 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c CS |
569 | { |
570 | if (blob_sizes.lbs_task == 0) { | |
571 | task->security = NULL; | |
572 | return 0; | |
573 | } | |
574 | ||
575 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
576 | if (task->security == NULL) | |
577 | return -ENOMEM; | |
578 | return 0; | |
579 | } | |
580 | ||
ecd5f82e CS |
581 | /** |
582 | * lsm_ipc_alloc - allocate a composite ipc blob | |
583 | * @kip: the ipc that needs a blob | |
584 | * | |
585 | * Allocate the ipc blob for all the modules | |
586 | * | |
587 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
588 | */ | |
3e8c7367 | 589 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
590 | { |
591 | if (blob_sizes.lbs_ipc == 0) { | |
592 | kip->security = NULL; | |
593 | return 0; | |
594 | } | |
595 | ||
596 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
597 | if (kip->security == NULL) | |
598 | return -ENOMEM; | |
599 | return 0; | |
600 | } | |
601 | ||
602 | /** | |
603 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
604 | * @mp: the msg_msg that needs a blob | |
605 | * | |
606 | * Allocate the ipc blob for all the modules | |
607 | * | |
608 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
609 | */ | |
3e8c7367 | 610 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
611 | { |
612 | if (blob_sizes.lbs_msg_msg == 0) { | |
613 | mp->security = NULL; | |
614 | return 0; | |
615 | } | |
616 | ||
617 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
618 | if (mp->security == NULL) | |
619 | return -ENOMEM; | |
620 | return 0; | |
621 | } | |
622 | ||
68fa0bb2 JJ |
623 | /** |
624 | * lsm_sock_alloc - allocate a composite sock blob | |
625 | * @sock: the sock that needs a blob | |
626 | * @priority: allocation mode | |
627 | * | |
628 | * Allocate the sock blob for all the modules | |
629 | * | |
630 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
631 | */ | |
632 | static int lsm_sock_alloc(struct sock *sock, gfp_t priority) | |
633 | { | |
634 | if (blob_sizes.lbs_sock == 0) { | |
635 | sock->sk_security = NULL; | |
636 | return 0; | |
637 | } | |
638 | ||
639 | sock->sk_security = kzalloc(blob_sizes.lbs_sock, priority); | |
640 | if (sock->sk_security == NULL) | |
641 | return -ENOMEM; | |
642 | return 0; | |
643 | } | |
644 | ||
f4ad8f2c CS |
645 | /** |
646 | * lsm_early_task - during initialization allocate a composite task blob | |
647 | * @task: the task that needs a blob | |
648 | * | |
1cfb2a51 | 649 | * Allocate the task blob for all the modules |
f4ad8f2c | 650 | */ |
1cfb2a51 | 651 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 652 | { |
1cfb2a51 | 653 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 654 | |
f4ad8f2c CS |
655 | if (rc) |
656 | panic("%s: Early task alloc failed.\n", __func__); | |
657 | } | |
658 | ||
f25fce3e | 659 | /* |
b1d9e6b0 | 660 | * Hook list operation macros. |
1da177e4 | 661 | * |
f25fce3e CS |
662 | * call_void_hook: |
663 | * This is a hook that does not return a value. | |
1da177e4 | 664 | * |
f25fce3e CS |
665 | * call_int_hook: |
666 | * This is a hook that returns a value. | |
1da177e4 | 667 | */ |
1da177e4 | 668 | |
b1d9e6b0 CS |
669 | #define call_void_hook(FUNC, ...) \ |
670 | do { \ | |
671 | struct security_hook_list *P; \ | |
672 | \ | |
df0ce173 | 673 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
674 | P->hook.FUNC(__VA_ARGS__); \ |
675 | } while (0) | |
676 | ||
c8001f51 CS |
677 | #define call_one_void_hook(FUNC, ...) \ |
678 | do { \ | |
679 | struct security_hook_list *P; \ | |
680 | \ | |
681 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ | |
682 | P->hook.FUNC(__VA_ARGS__); \ | |
683 | break; \ | |
684 | } \ | |
685 | } while (0) | |
686 | ||
b1d9e6b0 CS |
687 | #define call_int_hook(FUNC, IRC, ...) ({ \ |
688 | int RC = IRC; \ | |
689 | do { \ | |
690 | struct security_hook_list *P; \ | |
691 | \ | |
df0ce173 | 692 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
693 | RC = P->hook.FUNC(__VA_ARGS__); \ |
694 | if (RC != 0) \ | |
695 | break; \ | |
696 | } \ | |
697 | } while (0); \ | |
698 | RC; \ | |
699 | }) | |
1da177e4 | 700 | |
c8001f51 CS |
701 | #define call_one_int_hook(FUNC, IRC, ...) ({ \ |
702 | int RC = IRC; \ | |
502fb1b1 CS |
703 | struct lsm_one_hooks *LOH = current_cred()->security; \ |
704 | if (LOH->FUNC.FUNC) \ | |
705 | RC = LOH->FUNC.FUNC(__VA_ARGS__); \ | |
706 | else if (LOH->lsm == NULL && lsm_base_one.FUNC.FUNC) \ | |
aefe0d01 | 707 | RC = lsm_base_one.FUNC.FUNC(__VA_ARGS__); \ |
c8001f51 CS |
708 | RC; \ |
709 | }) | |
710 | ||
20510f2f JM |
711 | /* Security operations */ |
712 | ||
79af7307 SS |
713 | int security_binder_set_context_mgr(struct task_struct *mgr) |
714 | { | |
f25fce3e | 715 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 | 716 | } |
1de76885 | 717 | EXPORT_SYMBOL(security_binder_set_context_mgr); |
79af7307 SS |
718 | |
719 | int security_binder_transaction(struct task_struct *from, | |
720 | struct task_struct *to) | |
721 | { | |
f25fce3e | 722 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 | 723 | } |
1de76885 | 724 | EXPORT_SYMBOL(security_binder_transaction); |
79af7307 SS |
725 | |
726 | int security_binder_transfer_binder(struct task_struct *from, | |
727 | struct task_struct *to) | |
728 | { | |
f25fce3e | 729 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 | 730 | } |
1de76885 | 731 | EXPORT_SYMBOL(security_binder_transfer_binder); |
79af7307 SS |
732 | |
733 | int security_binder_transfer_file(struct task_struct *from, | |
734 | struct task_struct *to, struct file *file) | |
735 | { | |
f25fce3e | 736 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 | 737 | } |
1de76885 | 738 | EXPORT_SYMBOL(security_binder_transfer_file); |
79af7307 | 739 | |
9e48858f | 740 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 741 | { |
f25fce3e | 742 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
743 | } |
744 | ||
745 | int security_ptrace_traceme(struct task_struct *parent) | |
746 | { | |
f25fce3e | 747 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
748 | } |
749 | ||
750 | int security_capget(struct task_struct *target, | |
751 | kernel_cap_t *effective, | |
752 | kernel_cap_t *inheritable, | |
753 | kernel_cap_t *permitted) | |
754 | { | |
f25fce3e CS |
755 | return call_int_hook(capget, 0, target, |
756 | effective, inheritable, permitted); | |
20510f2f JM |
757 | } |
758 | ||
d84f4f99 DH |
759 | int security_capset(struct cred *new, const struct cred *old, |
760 | const kernel_cap_t *effective, | |
761 | const kernel_cap_t *inheritable, | |
762 | const kernel_cap_t *permitted) | |
20510f2f | 763 | { |
f25fce3e CS |
764 | return call_int_hook(capset, 0, new, old, |
765 | effective, inheritable, permitted); | |
20510f2f JM |
766 | } |
767 | ||
c1a85a00 MM |
768 | int security_capable(const struct cred *cred, |
769 | struct user_namespace *ns, | |
770 | int cap, | |
771 | unsigned int opts) | |
20510f2f | 772 | { |
c1a85a00 | 773 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
774 | } |
775 | ||
20510f2f JM |
776 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
777 | { | |
f25fce3e | 778 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
779 | } |
780 | ||
781 | int security_quota_on(struct dentry *dentry) | |
782 | { | |
f25fce3e | 783 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
784 | } |
785 | ||
12b3052c | 786 | int security_syslog(int type) |
20510f2f | 787 | { |
f25fce3e | 788 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
789 | } |
790 | ||
457db29b | 791 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 792 | { |
f25fce3e | 793 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
794 | } |
795 | ||
20510f2f JM |
796 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
797 | { | |
b1d9e6b0 CS |
798 | struct security_hook_list *hp; |
799 | int cap_sys_admin = 1; | |
800 | int rc; | |
801 | ||
802 | /* | |
803 | * The module will respond with a positive value if | |
804 | * it thinks the __vm_enough_memory() call should be | |
805 | * made with the cap_sys_admin set. If all of the modules | |
806 | * agree that it should be set it will. If any module | |
807 | * thinks it should not be set it won't. | |
808 | */ | |
df0ce173 | 809 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
810 | rc = hp->hook.vm_enough_memory(mm, pages); |
811 | if (rc <= 0) { | |
812 | cap_sys_admin = 0; | |
813 | break; | |
814 | } | |
815 | } | |
816 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
817 | } |
818 | ||
a6f76f23 | 819 | int security_bprm_set_creds(struct linux_binprm *bprm) |
20510f2f | 820 | { |
f25fce3e | 821 | return call_int_hook(bprm_set_creds, 0, bprm); |
20510f2f JM |
822 | } |
823 | ||
a6f76f23 | 824 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 825 | { |
6c21a7fb MZ |
826 | int ret; |
827 | ||
f25fce3e | 828 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
829 | if (ret) |
830 | return ret; | |
831 | return ima_bprm_check(bprm); | |
20510f2f JM |
832 | } |
833 | ||
a6f76f23 | 834 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 835 | { |
f25fce3e | 836 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
837 | } |
838 | ||
a6f76f23 | 839 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 840 | { |
f25fce3e | 841 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
842 | } |
843 | ||
0b52075e AV |
844 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
845 | { | |
846 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
847 | } | |
848 | ||
da2441fd DH |
849 | int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param) |
850 | { | |
851 | return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param); | |
852 | } | |
853 | ||
20510f2f JM |
854 | int security_sb_alloc(struct super_block *sb) |
855 | { | |
f25fce3e | 856 | return call_int_hook(sb_alloc_security, 0, sb); |
20510f2f JM |
857 | } |
858 | ||
859 | void security_sb_free(struct super_block *sb) | |
860 | { | |
f25fce3e | 861 | call_void_hook(sb_free_security, sb); |
20510f2f JM |
862 | } |
863 | ||
204cc0cc | 864 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 865 | { |
204cc0cc AV |
866 | if (!*mnt_opts) |
867 | return; | |
868 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
869 | *mnt_opts = NULL; | |
20510f2f | 870 | } |
204cc0cc | 871 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 872 | |
204cc0cc | 873 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 874 | { |
204cc0cc | 875 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 876 | } |
f5c0c26d | 877 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 878 | |
c039bc3c | 879 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 880 | void *mnt_opts) |
20510f2f | 881 | { |
204cc0cc | 882 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 883 | } |
a65001e8 | 884 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 885 | |
a10d7c22 | 886 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 887 | { |
a10d7c22 | 888 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
889 | } |
890 | ||
2069f457 EP |
891 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
892 | { | |
f25fce3e | 893 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
894 | } |
895 | ||
20510f2f JM |
896 | int security_sb_statfs(struct dentry *dentry) |
897 | { | |
f25fce3e | 898 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
899 | } |
900 | ||
8a04c43b | 901 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 902 | const char *type, unsigned long flags, void *data) |
20510f2f | 903 | { |
f25fce3e | 904 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
905 | } |
906 | ||
20510f2f JM |
907 | int security_sb_umount(struct vfsmount *mnt, int flags) |
908 | { | |
f25fce3e | 909 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
910 | } |
911 | ||
3b73b68c | 912 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 913 | { |
f25fce3e | 914 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
915 | } |
916 | ||
c9180a57 | 917 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 918 | void *mnt_opts, |
649f6e77 DQ |
919 | unsigned long kern_flags, |
920 | unsigned long *set_kern_flags) | |
c9180a57 | 921 | { |
b1d9e6b0 | 922 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
923 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
924 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 925 | } |
e0007529 | 926 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 927 | |
094f7b69 | 928 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
929 | struct super_block *newsb, |
930 | unsigned long kern_flags, | |
931 | unsigned long *set_kern_flags) | |
c9180a57 | 932 | { |
0b4d3452 SM |
933 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
934 | kern_flags, set_kern_flags); | |
c9180a57 | 935 | } |
e0007529 EP |
936 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
937 | ||
757cbe59 AV |
938 | int security_add_mnt_opt(const char *option, const char *val, int len, |
939 | void **mnt_opts) | |
e0007529 | 940 | { |
757cbe59 AV |
941 | return call_int_hook(sb_add_mnt_opt, -EINVAL, |
942 | option, val, len, mnt_opts); | |
e0007529 | 943 | } |
757cbe59 | 944 | EXPORT_SYMBOL(security_add_mnt_opt); |
c9180a57 | 945 | |
2db154b3 DH |
946 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
947 | { | |
948 | return call_int_hook(move_mount, 0, from_path, to_path); | |
949 | } | |
950 | ||
20510f2f JM |
951 | int security_inode_alloc(struct inode *inode) |
952 | { | |
afb1cbe3 CS |
953 | int rc = lsm_inode_alloc(inode); |
954 | ||
955 | if (unlikely(rc)) | |
956 | return rc; | |
957 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
958 | if (unlikely(rc)) | |
959 | security_inode_free(inode); | |
960 | return rc; | |
961 | } | |
962 | ||
963 | static void inode_free_by_rcu(struct rcu_head *head) | |
964 | { | |
965 | /* | |
966 | * The rcu head is at the start of the inode blob | |
967 | */ | |
968 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
969 | } |
970 | ||
971 | void security_inode_free(struct inode *inode) | |
972 | { | |
f381c272 | 973 | integrity_inode_free(inode); |
f25fce3e | 974 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
975 | /* |
976 | * The inode may still be referenced in a path walk and | |
977 | * a call to security_inode_permission() can be made | |
978 | * after inode_free_security() is called. Ideally, the VFS | |
979 | * wouldn't do this, but fixing that is a much harder | |
980 | * job. For now, simply free the i_security via RCU, and | |
981 | * leave the current inode->i_security pointer intact. | |
982 | * The inode will be freed after the RCU grace period too. | |
983 | */ | |
984 | if (inode->i_security) | |
985 | call_rcu((struct rcu_head *)inode->i_security, | |
986 | inode_free_by_rcu); | |
20510f2f JM |
987 | } |
988 | ||
d47be3df | 989 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 990 | const struct qstr *name, void **ctx, |
d47be3df DQ |
991 | u32 *ctxlen) |
992 | { | |
b1d9e6b0 CS |
993 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
994 | name, ctx, ctxlen); | |
d47be3df DQ |
995 | } |
996 | EXPORT_SYMBOL(security_dentry_init_security); | |
997 | ||
2602625b VG |
998 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
999 | struct qstr *name, | |
1000 | const struct cred *old, struct cred *new) | |
1001 | { | |
1002 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
1003 | name, old, new); | |
1004 | } | |
1005 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
1006 | ||
20510f2f | 1007 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
1008 | const struct qstr *qstr, |
1009 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 1010 | { |
823eb1cc MZ |
1011 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
1012 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
1013 | int ret; |
1014 | ||
20510f2f | 1015 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 1016 | return 0; |
9d8f13ba | 1017 | |
9d8f13ba | 1018 | if (!initxattrs) |
e308fd3b JB |
1019 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
1020 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 1021 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 1022 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 1023 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
1024 | &lsm_xattr->name, |
1025 | &lsm_xattr->value, | |
1026 | &lsm_xattr->value_len); | |
1027 | if (ret) | |
1028 | goto out; | |
823eb1cc MZ |
1029 | |
1030 | evm_xattr = lsm_xattr + 1; | |
1031 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1032 | if (ret) | |
1033 | goto out; | |
9d8f13ba MZ |
1034 | ret = initxattrs(inode, new_xattrs, fs_data); |
1035 | out: | |
9548906b | 1036 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1037 | kfree(xattr->value); |
9d8f13ba MZ |
1038 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1039 | } | |
1040 | EXPORT_SYMBOL(security_inode_init_security); | |
1041 | ||
1042 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, | |
9548906b | 1043 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1044 | void **value, size_t *len) |
20510f2f JM |
1045 | { |
1046 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1047 | return -EOPNOTSUPP; |
e308fd3b JB |
1048 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1049 | qstr, name, value, len); | |
20510f2f | 1050 | } |
9d8f13ba | 1051 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1052 | |
be6d3e56 | 1053 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1054 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1055 | unsigned int dev) |
1056 | { | |
c6f493d6 | 1057 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1058 | return 0; |
f25fce3e | 1059 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1060 | } |
1061 | EXPORT_SYMBOL(security_path_mknod); | |
1062 | ||
d3607752 | 1063 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1064 | { |
c6f493d6 | 1065 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1066 | return 0; |
f25fce3e | 1067 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1068 | } |
82140443 | 1069 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1070 | |
989f74e0 | 1071 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1072 | { |
c6f493d6 | 1073 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1074 | return 0; |
f25fce3e | 1075 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 | 1076 | } |
8994cce9 | 1077 | EXPORT_SYMBOL_GPL(security_path_rmdir); |
be6d3e56 | 1078 | |
989f74e0 | 1079 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1080 | { |
c6f493d6 | 1081 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1082 | return 0; |
f25fce3e | 1083 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1084 | } |
82140443 | 1085 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1086 | |
d3607752 | 1087 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1088 | const char *old_name) |
1089 | { | |
c6f493d6 | 1090 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1091 | return 0; |
f25fce3e | 1092 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 | 1093 | } |
8994cce9 | 1094 | EXPORT_SYMBOL_GPL(security_path_symlink); |
be6d3e56 | 1095 | |
3ccee46a | 1096 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1097 | struct dentry *new_dentry) |
1098 | { | |
c6f493d6 | 1099 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1100 | return 0; |
f25fce3e | 1101 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 | 1102 | } |
8994cce9 | 1103 | EXPORT_SYMBOL_GPL(security_path_link); |
be6d3e56 | 1104 | |
3ccee46a AV |
1105 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1106 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1107 | unsigned int flags) |
be6d3e56 | 1108 | { |
c6f493d6 DH |
1109 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1110 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1111 | return 0; |
da1ce067 MS |
1112 | |
1113 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1114 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1115 | old_dir, old_dentry); | |
da1ce067 MS |
1116 | if (err) |
1117 | return err; | |
1118 | } | |
1119 | ||
f25fce3e CS |
1120 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1121 | new_dentry); | |
be6d3e56 | 1122 | } |
82140443 | 1123 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1124 | |
81f4c506 | 1125 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1126 | { |
c6f493d6 | 1127 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1128 | return 0; |
f25fce3e | 1129 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1130 | } |
8994cce9 | 1131 | EXPORT_SYMBOL_GPL(security_path_truncate); |
89eda068 | 1132 | |
be01f9f2 | 1133 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1134 | { |
c6f493d6 | 1135 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1136 | return 0; |
f25fce3e | 1137 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 | 1138 | } |
8994cce9 | 1139 | EXPORT_SYMBOL_GPL(security_path_chmod); |
89eda068 | 1140 | |
7fd25dac | 1141 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1142 | { |
c6f493d6 | 1143 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1144 | return 0; |
f25fce3e | 1145 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1146 | } |
8994cce9 | 1147 | EXPORT_SYMBOL_GPL(security_path_chown); |
8b8efb44 | 1148 | |
77b286c0 | 1149 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1150 | { |
f25fce3e | 1151 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1152 | } |
be6d3e56 KT |
1153 | #endif |
1154 | ||
4acdaf27 | 1155 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1156 | { |
1157 | if (unlikely(IS_PRIVATE(dir))) | |
1158 | return 0; | |
f25fce3e | 1159 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1160 | } |
800a9647 | 1161 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1162 | |
1163 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1164 | struct dentry *new_dentry) | |
1165 | { | |
c6f493d6 | 1166 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1167 | return 0; |
f25fce3e | 1168 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1169 | } |
1170 | ||
1171 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1172 | { | |
c6f493d6 | 1173 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1174 | return 0; |
f25fce3e | 1175 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1176 | } |
1177 | ||
1178 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1179 | const char *old_name) | |
1180 | { | |
1181 | if (unlikely(IS_PRIVATE(dir))) | |
1182 | return 0; | |
f25fce3e | 1183 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1184 | } |
1185 | ||
18bb1db3 | 1186 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1187 | { |
1188 | if (unlikely(IS_PRIVATE(dir))) | |
1189 | return 0; | |
f25fce3e | 1190 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1191 | } |
800a9647 | 1192 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1193 | |
1194 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1195 | { | |
c6f493d6 | 1196 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1197 | return 0; |
f25fce3e | 1198 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1199 | } |
1200 | ||
1a67aafb | 1201 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1202 | { |
1203 | if (unlikely(IS_PRIVATE(dir))) | |
1204 | return 0; | |
f25fce3e | 1205 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1206 | } |
1207 | ||
1208 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1209 | struct inode *new_dir, struct dentry *new_dentry, |
1210 | unsigned int flags) | |
20510f2f | 1211 | { |
c6f493d6 DH |
1212 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1213 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1214 | return 0; |
da1ce067 MS |
1215 | |
1216 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1217 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1218 | old_dir, old_dentry); |
1219 | if (err) | |
1220 | return err; | |
1221 | } | |
1222 | ||
f25fce3e | 1223 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1224 | new_dir, new_dentry); |
1225 | } | |
1226 | ||
1227 | int security_inode_readlink(struct dentry *dentry) | |
1228 | { | |
c6f493d6 | 1229 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1230 | return 0; |
f25fce3e | 1231 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1232 | } |
1233 | ||
bda0be7a N |
1234 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1235 | bool rcu) | |
20510f2f | 1236 | { |
bda0be7a | 1237 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1238 | return 0; |
e22619a2 | 1239 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1240 | } |
1241 | ||
b77b0646 | 1242 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1243 | { |
1244 | if (unlikely(IS_PRIVATE(inode))) | |
1245 | return 0; | |
f25fce3e | 1246 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f | 1247 | } |
8994cce9 | 1248 | EXPORT_SYMBOL_GPL(security_inode_permission); |
20510f2f JM |
1249 | |
1250 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1251 | { | |
817b54aa MZ |
1252 | int ret; |
1253 | ||
c6f493d6 | 1254 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1255 | return 0; |
f25fce3e | 1256 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1257 | if (ret) |
1258 | return ret; | |
1259 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1260 | } |
b1da47e2 | 1261 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1262 | |
3f7036a0 | 1263 | int security_inode_getattr(const struct path *path) |
20510f2f | 1264 | { |
c6f493d6 | 1265 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1266 | return 0; |
f25fce3e | 1267 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1268 | } |
1269 | ||
8f0cfa52 DH |
1270 | int security_inode_setxattr(struct dentry *dentry, const char *name, |
1271 | const void *value, size_t size, int flags) | |
20510f2f | 1272 | { |
3e1be52d MZ |
1273 | int ret; |
1274 | ||
c6f493d6 | 1275 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1276 | return 0; |
b1d9e6b0 CS |
1277 | /* |
1278 | * SELinux and Smack integrate the cap call, | |
1279 | * so assume that all LSMs supplying this call do so. | |
1280 | */ | |
1281 | ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, | |
f25fce3e | 1282 | flags); |
b1d9e6b0 CS |
1283 | |
1284 | if (ret == 1) | |
1285 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1286 | if (ret) |
1287 | return ret; | |
1288 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1289 | if (ret) |
1290 | return ret; | |
1291 | return evm_inode_setxattr(dentry, name, value, size); | |
20510f2f JM |
1292 | } |
1293 | ||
8f0cfa52 DH |
1294 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1295 | const void *value, size_t size, int flags) | |
20510f2f | 1296 | { |
c6f493d6 | 1297 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1298 | return; |
f25fce3e | 1299 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1300 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1301 | } |
1302 | ||
8f0cfa52 | 1303 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1304 | { |
c6f493d6 | 1305 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1306 | return 0; |
f25fce3e | 1307 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1308 | } |
1309 | ||
1310 | int security_inode_listxattr(struct dentry *dentry) | |
1311 | { | |
c6f493d6 | 1312 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1313 | return 0; |
f25fce3e | 1314 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1315 | } |
1316 | ||
8f0cfa52 | 1317 | int security_inode_removexattr(struct dentry *dentry, const char *name) |
20510f2f | 1318 | { |
3e1be52d MZ |
1319 | int ret; |
1320 | ||
c6f493d6 | 1321 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1322 | return 0; |
b1d9e6b0 CS |
1323 | /* |
1324 | * SELinux and Smack integrate the cap call, | |
1325 | * so assume that all LSMs supplying this call do so. | |
1326 | */ | |
1327 | ret = call_int_hook(inode_removexattr, 1, dentry, name); | |
1328 | if (ret == 1) | |
1329 | ret = cap_inode_removexattr(dentry, name); | |
42c63330 MZ |
1330 | if (ret) |
1331 | return ret; | |
1332 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1333 | if (ret) |
1334 | return ret; | |
1335 | return evm_inode_removexattr(dentry, name); | |
20510f2f JM |
1336 | } |
1337 | ||
b5376771 SH |
1338 | int security_inode_need_killpriv(struct dentry *dentry) |
1339 | { | |
f25fce3e | 1340 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1341 | } |
1342 | ||
1343 | int security_inode_killpriv(struct dentry *dentry) | |
1344 | { | |
f25fce3e | 1345 | return call_int_hook(inode_killpriv, 0, dentry); |
b5376771 SH |
1346 | } |
1347 | ||
ea861dfd | 1348 | int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) |
20510f2f | 1349 | { |
2885c1e3 CS |
1350 | struct security_hook_list *hp; |
1351 | int rc; | |
1352 | ||
20510f2f | 1353 | if (unlikely(IS_PRIVATE(inode))) |
8d952504 | 1354 | return -EOPNOTSUPP; |
2885c1e3 CS |
1355 | /* |
1356 | * Only one module will provide an attribute with a given name. | |
1357 | */ | |
df0ce173 | 1358 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
2885c1e3 CS |
1359 | rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); |
1360 | if (rc != -EOPNOTSUPP) | |
1361 | return rc; | |
1362 | } | |
1363 | return -EOPNOTSUPP; | |
20510f2f JM |
1364 | } |
1365 | ||
1366 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1367 | { | |
2885c1e3 CS |
1368 | struct security_hook_list *hp; |
1369 | int rc; | |
1370 | ||
20510f2f | 1371 | if (unlikely(IS_PRIVATE(inode))) |
8d952504 | 1372 | return -EOPNOTSUPP; |
2885c1e3 CS |
1373 | /* |
1374 | * Only one module will provide an attribute with a given name. | |
1375 | */ | |
df0ce173 | 1376 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1377 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1378 | flags); | |
1379 | if (rc != -EOPNOTSUPP) | |
1380 | return rc; | |
1381 | } | |
1382 | return -EOPNOTSUPP; | |
20510f2f JM |
1383 | } |
1384 | ||
1385 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1386 | { | |
1387 | if (unlikely(IS_PRIVATE(inode))) | |
1388 | return 0; | |
f25fce3e | 1389 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1390 | } |
c9bccef6 | 1391 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1392 | |
d6335d77 | 1393 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1394 | { |
f25fce3e | 1395 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1396 | } |
1397 | ||
d8ad8b49 VG |
1398 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1399 | { | |
1400 | return call_int_hook(inode_copy_up, 0, src, new); | |
1401 | } | |
1402 | EXPORT_SYMBOL(security_inode_copy_up); | |
1403 | ||
121ab822 VG |
1404 | int security_inode_copy_up_xattr(const char *name) |
1405 | { | |
1406 | return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name); | |
1407 | } | |
1408 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1409 | ||
b230d5ab OM |
1410 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1411 | struct kernfs_node *kn) | |
1412 | { | |
1413 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1414 | } | |
1415 | ||
20510f2f JM |
1416 | int security_file_permission(struct file *file, int mask) |
1417 | { | |
c4ec54b4 EP |
1418 | int ret; |
1419 | ||
f25fce3e | 1420 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1421 | if (ret) |
1422 | return ret; | |
1423 | ||
1424 | return fsnotify_perm(file, mask); | |
20510f2f | 1425 | } |
8994cce9 | 1426 | EXPORT_SYMBOL_GPL(security_file_permission); |
20510f2f JM |
1427 | |
1428 | int security_file_alloc(struct file *file) | |
1429 | { | |
33bf60ca CS |
1430 | int rc = lsm_file_alloc(file); |
1431 | ||
1432 | if (rc) | |
1433 | return rc; | |
1434 | rc = call_int_hook(file_alloc_security, 0, file); | |
1435 | if (unlikely(rc)) | |
1436 | security_file_free(file); | |
1437 | return rc; | |
20510f2f JM |
1438 | } |
1439 | ||
1440 | void security_file_free(struct file *file) | |
1441 | { | |
33bf60ca CS |
1442 | void *blob; |
1443 | ||
f25fce3e | 1444 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1445 | |
1446 | blob = file->f_security; | |
1447 | if (blob) { | |
1448 | file->f_security = NULL; | |
1449 | kmem_cache_free(lsm_file_cache, blob); | |
1450 | } | |
20510f2f JM |
1451 | } |
1452 | ||
1453 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1454 | { | |
f25fce3e | 1455 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f JM |
1456 | } |
1457 | ||
98de59bf | 1458 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1459 | { |
8b3ec681 | 1460 | /* |
98de59bf AV |
1461 | * Does we have PROT_READ and does the application expect |
1462 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1463 | */ |
98de59bf AV |
1464 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1465 | return prot; | |
8b3ec681 | 1466 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1467 | return prot; |
1468 | /* | |
1469 | * if that's an anonymous mapping, let it. | |
1470 | */ | |
1471 | if (!file) | |
1472 | return prot | PROT_EXEC; | |
1473 | /* | |
1474 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1475 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1476 | */ |
90f8572b | 1477 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1478 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1479 | if (file->f_op->mmap_capabilities) { |
1480 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1481 | if (!(caps & NOMMU_MAP_EXEC)) | |
1482 | return prot; | |
1483 | } | |
8b3ec681 | 1484 | #endif |
98de59bf | 1485 | return prot | PROT_EXEC; |
8b3ec681 | 1486 | } |
98de59bf AV |
1487 | /* anything on noexec mount won't get PROT_EXEC */ |
1488 | return prot; | |
1489 | } | |
1490 | ||
1491 | int security_mmap_file(struct file *file, unsigned long prot, | |
1492 | unsigned long flags) | |
1493 | { | |
1494 | int ret; | |
f25fce3e | 1495 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1496 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1497 | if (ret) |
1498 | return ret; | |
1499 | return ima_file_mmap(file, prot); | |
20510f2f | 1500 | } |
8994cce9 | 1501 | EXPORT_SYMBOL_GPL(security_mmap_file); |
20510f2f | 1502 | |
e5467859 AV |
1503 | int security_mmap_addr(unsigned long addr) |
1504 | { | |
f25fce3e | 1505 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1506 | } |
1507 | ||
20510f2f JM |
1508 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1509 | unsigned long prot) | |
1510 | { | |
f25fce3e | 1511 | return call_int_hook(file_mprotect, 0, vma, reqprot, prot); |
20510f2f JM |
1512 | } |
1513 | ||
1514 | int security_file_lock(struct file *file, unsigned int cmd) | |
1515 | { | |
f25fce3e | 1516 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1517 | } |
1518 | ||
1519 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1520 | { | |
f25fce3e | 1521 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1522 | } |
1523 | ||
e0b93edd | 1524 | void security_file_set_fowner(struct file *file) |
20510f2f | 1525 | { |
f25fce3e | 1526 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1527 | } |
1528 | ||
1529 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1530 | struct fown_struct *fown, int sig) | |
1531 | { | |
f25fce3e | 1532 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1533 | } |
1534 | ||
1535 | int security_file_receive(struct file *file) | |
1536 | { | |
f25fce3e | 1537 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1538 | } |
1539 | ||
e3f20ae2 | 1540 | int security_file_open(struct file *file) |
20510f2f | 1541 | { |
c4ec54b4 EP |
1542 | int ret; |
1543 | ||
94817692 | 1544 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1545 | if (ret) |
1546 | return ret; | |
1547 | ||
1548 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1549 | } |
1550 | ||
e4e55b47 TH |
1551 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1552 | { | |
f4ad8f2c CS |
1553 | int rc = lsm_task_alloc(task); |
1554 | ||
1555 | if (rc) | |
1556 | return rc; | |
1557 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1558 | if (unlikely(rc)) | |
1559 | security_task_free(task); | |
1560 | return rc; | |
e4e55b47 TH |
1561 | } |
1562 | ||
1a2a4d06 KC |
1563 | void security_task_free(struct task_struct *task) |
1564 | { | |
f25fce3e | 1565 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1566 | |
1567 | kfree(task->security); | |
1568 | task->security = NULL; | |
1a2a4d06 KC |
1569 | } |
1570 | ||
ee18d64c DH |
1571 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1572 | { | |
bbd3662a CS |
1573 | int rc = lsm_cred_alloc(cred, gfp); |
1574 | ||
1575 | if (rc) | |
1576 | return rc; | |
1577 | ||
1578 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1579 | if (unlikely(rc)) |
bbd3662a CS |
1580 | security_cred_free(cred); |
1581 | return rc; | |
ee18d64c DH |
1582 | } |
1583 | ||
d84f4f99 | 1584 | void security_cred_free(struct cred *cred) |
20510f2f | 1585 | { |
502fb1b1 CS |
1586 | struct lsm_one_hooks *loh = cred->security; |
1587 | ||
a5795fd3 JM |
1588 | /* |
1589 | * There is a failure case in prepare_creds() that | |
1590 | * may result in a call here with ->security being NULL. | |
1591 | */ | |
1592 | if (unlikely(cred->security == NULL)) | |
1593 | return; | |
1594 | ||
f25fce3e | 1595 | call_void_hook(cred_free, cred); |
bbd3662a | 1596 | |
502fb1b1 | 1597 | kfree(loh->lsm); |
bbd3662a CS |
1598 | kfree(cred->security); |
1599 | cred->security = NULL; | |
20510f2f JM |
1600 | } |
1601 | ||
502fb1b1 CS |
1602 | static int copy_loh(struct lsm_one_hooks *new, struct lsm_one_hooks *old, |
1603 | gfp_t gfp) | |
1604 | { | |
1605 | *new = *old; | |
1606 | if (old->lsm) { | |
1607 | new->lsm = kstrdup(old->lsm, gfp); | |
1608 | if (unlikely(new->lsm == NULL)) | |
1609 | return -ENOMEM; | |
1610 | } | |
1611 | return 0; | |
1612 | } | |
1613 | ||
d84f4f99 | 1614 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1615 | { |
bbd3662a CS |
1616 | int rc = lsm_cred_alloc(new, gfp); |
1617 | ||
502fb1b1 | 1618 | if (unlikely(rc)) |
bbd3662a CS |
1619 | return rc; |
1620 | ||
1621 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
502fb1b1 CS |
1622 | if (!unlikely(rc)) |
1623 | rc = copy_loh(new->security, old->security, gfp); | |
1624 | ||
33bf60ca | 1625 | if (unlikely(rc)) |
bbd3662a | 1626 | security_cred_free(new); |
502fb1b1 | 1627 | |
bbd3662a | 1628 | return rc; |
d84f4f99 DH |
1629 | } |
1630 | ||
ee18d64c DH |
1631 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1632 | { | |
f25fce3e | 1633 | call_void_hook(cred_transfer, new, old); |
502fb1b1 | 1634 | WARN_ON(copy_loh(new->security, old->security, GFP_KERNEL)); |
ee18d64c DH |
1635 | } |
1636 | ||
3ec30113 MG |
1637 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
1638 | { | |
1639 | *secid = 0; | |
1640 | call_void_hook(cred_getsecid, c, secid); | |
1641 | } | |
1642 | EXPORT_SYMBOL(security_cred_getsecid); | |
1643 | ||
3a3b7ce9 DH |
1644 | int security_kernel_act_as(struct cred *new, u32 secid) |
1645 | { | |
f25fce3e | 1646 | return call_int_hook(kernel_act_as, 0, new, secid); |
3a3b7ce9 DH |
1647 | } |
1648 | ||
1649 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1650 | { | |
f25fce3e | 1651 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1652 | } |
1653 | ||
dd8dbf2e | 1654 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1655 | { |
6eb864c1 MK |
1656 | int ret; |
1657 | ||
1658 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1659 | if (ret) | |
1660 | return ret; | |
1661 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1662 | } |
1663 | ||
39eeb4fb MZ |
1664 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id) |
1665 | { | |
1666 | int ret; | |
1667 | ||
1668 | ret = call_int_hook(kernel_read_file, 0, file, id); | |
1669 | if (ret) | |
1670 | return ret; | |
1671 | return ima_read_file(file, id); | |
1672 | } | |
1673 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1674 | ||
bc8ca5b9 MZ |
1675 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1676 | enum kernel_read_file_id id) | |
b44a7dfc | 1677 | { |
cf222217 MZ |
1678 | int ret; |
1679 | ||
1680 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1681 | if (ret) | |
1682 | return ret; | |
1683 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1684 | } |
1685 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1686 | ||
377179cd MZ |
1687 | int security_kernel_load_data(enum kernel_load_data_id id) |
1688 | { | |
16c267aa MZ |
1689 | int ret; |
1690 | ||
1691 | ret = call_int_hook(kernel_load_data, 0, id); | |
1692 | if (ret) | |
1693 | return ret; | |
1694 | return ima_load_data(id); | |
377179cd | 1695 | } |
83a68a06 | 1696 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1697 | |
d84f4f99 DH |
1698 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1699 | int flags) | |
20510f2f | 1700 | { |
f25fce3e | 1701 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1702 | } |
1703 | ||
20510f2f JM |
1704 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1705 | { | |
f25fce3e | 1706 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1707 | } |
1708 | ||
1709 | int security_task_getpgid(struct task_struct *p) | |
1710 | { | |
f25fce3e | 1711 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1712 | } |
1713 | ||
1714 | int security_task_getsid(struct task_struct *p) | |
1715 | { | |
f25fce3e | 1716 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1717 | } |
1718 | ||
1719 | void security_task_getsecid(struct task_struct *p, u32 *secid) | |
1720 | { | |
b1d9e6b0 | 1721 | *secid = 0; |
f25fce3e | 1722 | call_void_hook(task_getsecid, p, secid); |
20510f2f JM |
1723 | } |
1724 | EXPORT_SYMBOL(security_task_getsecid); | |
1725 | ||
20510f2f JM |
1726 | int security_task_setnice(struct task_struct *p, int nice) |
1727 | { | |
f25fce3e | 1728 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1729 | } |
1730 | ||
1731 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1732 | { | |
f25fce3e | 1733 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1734 | } |
1735 | ||
1736 | int security_task_getioprio(struct task_struct *p) | |
1737 | { | |
f25fce3e | 1738 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1739 | } |
1740 | ||
791ec491 SS |
1741 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1742 | unsigned int flags) | |
1743 | { | |
1744 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1745 | } | |
1746 | ||
8fd00b4d JS |
1747 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1748 | struct rlimit *new_rlim) | |
20510f2f | 1749 | { |
f25fce3e | 1750 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1751 | } |
1752 | ||
b0ae1981 | 1753 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1754 | { |
f25fce3e | 1755 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1756 | } |
1757 | ||
1758 | int security_task_getscheduler(struct task_struct *p) | |
1759 | { | |
f25fce3e | 1760 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1761 | } |
1762 | ||
1763 | int security_task_movememory(struct task_struct *p) | |
1764 | { | |
f25fce3e | 1765 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1766 | } |
1767 | ||
ae7795bc | 1768 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 1769 | int sig, const struct cred *cred) |
20510f2f | 1770 | { |
6b4f3d01 | 1771 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
1772 | } |
1773 | ||
20510f2f | 1774 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1775 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1776 | { |
b1d9e6b0 CS |
1777 | int thisrc; |
1778 | int rc = -ENOSYS; | |
1779 | struct security_hook_list *hp; | |
1780 | ||
df0ce173 | 1781 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 CS |
1782 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
1783 | if (thisrc != -ENOSYS) { | |
1784 | rc = thisrc; | |
1785 | if (thisrc != 0) | |
1786 | break; | |
1787 | } | |
1788 | } | |
1789 | return rc; | |
20510f2f JM |
1790 | } |
1791 | ||
1792 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1793 | { | |
f25fce3e | 1794 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1795 | } |
1796 | ||
1797 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1798 | { | |
f25fce3e | 1799 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1800 | } |
1801 | ||
8a076191 AD |
1802 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1803 | { | |
b1d9e6b0 | 1804 | *secid = 0; |
f25fce3e | 1805 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1806 | } |
1807 | ||
20510f2f JM |
1808 | int security_msg_msg_alloc(struct msg_msg *msg) |
1809 | { | |
ecd5f82e CS |
1810 | int rc = lsm_msg_msg_alloc(msg); |
1811 | ||
1812 | if (unlikely(rc)) | |
1813 | return rc; | |
1814 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
1815 | if (unlikely(rc)) | |
1816 | security_msg_msg_free(msg); | |
1817 | return rc; | |
20510f2f JM |
1818 | } |
1819 | ||
1820 | void security_msg_msg_free(struct msg_msg *msg) | |
1821 | { | |
f25fce3e | 1822 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
1823 | kfree(msg->security); |
1824 | msg->security = NULL; | |
20510f2f JM |
1825 | } |
1826 | ||
d8c6e854 | 1827 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 1828 | { |
ecd5f82e CS |
1829 | int rc = lsm_ipc_alloc(msq); |
1830 | ||
1831 | if (unlikely(rc)) | |
1832 | return rc; | |
1833 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
1834 | if (unlikely(rc)) | |
1835 | security_msg_queue_free(msq); | |
1836 | return rc; | |
20510f2f JM |
1837 | } |
1838 | ||
d8c6e854 | 1839 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 1840 | { |
f25fce3e | 1841 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
1842 | kfree(msq->security); |
1843 | msq->security = NULL; | |
20510f2f JM |
1844 | } |
1845 | ||
d8c6e854 | 1846 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 1847 | { |
f25fce3e | 1848 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
1849 | } |
1850 | ||
d8c6e854 | 1851 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 1852 | { |
f25fce3e | 1853 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
1854 | } |
1855 | ||
d8c6e854 | 1856 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
1857 | struct msg_msg *msg, int msqflg) |
1858 | { | |
f25fce3e | 1859 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
1860 | } |
1861 | ||
d8c6e854 | 1862 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
1863 | struct task_struct *target, long type, int mode) |
1864 | { | |
f25fce3e | 1865 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
1866 | } |
1867 | ||
7191adff | 1868 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 1869 | { |
ecd5f82e CS |
1870 | int rc = lsm_ipc_alloc(shp); |
1871 | ||
1872 | if (unlikely(rc)) | |
1873 | return rc; | |
1874 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
1875 | if (unlikely(rc)) | |
1876 | security_shm_free(shp); | |
1877 | return rc; | |
20510f2f JM |
1878 | } |
1879 | ||
7191adff | 1880 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 1881 | { |
f25fce3e | 1882 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
1883 | kfree(shp->security); |
1884 | shp->security = NULL; | |
20510f2f JM |
1885 | } |
1886 | ||
7191adff | 1887 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 1888 | { |
f25fce3e | 1889 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
1890 | } |
1891 | ||
7191adff | 1892 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 1893 | { |
f25fce3e | 1894 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
1895 | } |
1896 | ||
7191adff | 1897 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 1898 | { |
f25fce3e | 1899 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
1900 | } |
1901 | ||
aefad959 | 1902 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 1903 | { |
ecd5f82e CS |
1904 | int rc = lsm_ipc_alloc(sma); |
1905 | ||
1906 | if (unlikely(rc)) | |
1907 | return rc; | |
1908 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
1909 | if (unlikely(rc)) | |
1910 | security_sem_free(sma); | |
1911 | return rc; | |
20510f2f JM |
1912 | } |
1913 | ||
aefad959 | 1914 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 1915 | { |
f25fce3e | 1916 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
1917 | kfree(sma->security); |
1918 | sma->security = NULL; | |
20510f2f JM |
1919 | } |
1920 | ||
aefad959 | 1921 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 1922 | { |
f25fce3e | 1923 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
1924 | } |
1925 | ||
aefad959 | 1926 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 1927 | { |
f25fce3e | 1928 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
1929 | } |
1930 | ||
aefad959 | 1931 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
1932 | unsigned nsops, int alter) |
1933 | { | |
f25fce3e | 1934 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
1935 | } |
1936 | ||
1937 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
1938 | { | |
1939 | if (unlikely(inode && IS_PRIVATE(inode))) | |
1940 | return; | |
f25fce3e | 1941 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
1942 | } |
1943 | EXPORT_SYMBOL(security_d_instantiate); | |
1944 | ||
6d9c939d CS |
1945 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
1946 | char **value) | |
20510f2f | 1947 | { |
6d9c939d | 1948 | struct security_hook_list *hp; |
502fb1b1 CS |
1949 | struct lsm_one_hooks *loh = current_cred()->security; |
1950 | char *s; | |
1951 | ||
1952 | if (!strcmp(name, "display")) { | |
1953 | if (loh->lsm) | |
1954 | s = loh->lsm; | |
1955 | else if (lsm_base_one.lsm) | |
1956 | s = lsm_base_one.lsm; | |
1957 | else | |
1958 | return -EINVAL; | |
1959 | ||
1960 | *value = kstrdup(s, GFP_KERNEL); | |
1961 | if (*value) | |
1962 | return strlen(s); | |
1963 | return -ENOMEM; | |
1964 | } | |
6d9c939d CS |
1965 | |
1966 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
1967 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1968 | continue; | |
502fb1b1 CS |
1969 | if (lsm == NULL && loh->lsm && strcmp(loh->lsm, hp->lsm)) |
1970 | continue; | |
6d9c939d CS |
1971 | return hp->hook.getprocattr(p, name, value); |
1972 | } | |
1973 | return -EINVAL; | |
20510f2f JM |
1974 | } |
1975 | ||
6d9c939d CS |
1976 | int security_setprocattr(const char *lsm, const char *name, void *value, |
1977 | size_t size) | |
20510f2f | 1978 | { |
6d9c939d | 1979 | struct security_hook_list *hp; |
502fb1b1 CS |
1980 | struct lsm_one_hooks *loh = current_cred()->security; |
1981 | bool found = false; | |
1982 | char *s; | |
1983 | ||
1984 | /* | |
1985 | * End the passed name at a newline. | |
1986 | */ | |
1987 | s = strnchr(value, size, '\n'); | |
1988 | if (s) | |
1989 | *s = '\0'; | |
1990 | ||
1991 | if (!strcmp(name, "display")) { | |
1992 | union security_list_options secid_to_secctx; | |
1993 | union security_list_options secctx_to_secid; | |
1994 | union security_list_options socket_getpeersec_stream; | |
1995 | ||
1996 | if (size == 0 || size >= 100) | |
1997 | return -EINVAL; | |
1998 | ||
1999 | secid_to_secctx.secid_to_secctx = NULL; | |
2000 | hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, | |
2001 | list) { | |
2002 | if (size >= strlen(hp->lsm) && | |
2003 | !strncmp(value, hp->lsm, size)) { | |
2004 | secid_to_secctx = hp->hook; | |
2005 | found = true; | |
2006 | break; | |
2007 | } | |
2008 | } | |
2009 | secctx_to_secid.secctx_to_secid = NULL; | |
2010 | hlist_for_each_entry(hp, &security_hook_heads.secctx_to_secid, | |
2011 | list) { | |
2012 | if (size >= strlen(hp->lsm) && | |
2013 | !strncmp(value, hp->lsm, size)) { | |
2014 | secctx_to_secid = hp->hook; | |
2015 | found = true; | |
2016 | break; | |
2017 | } | |
2018 | } | |
2019 | socket_getpeersec_stream.socket_getpeersec_stream = NULL; | |
2020 | hlist_for_each_entry(hp, | |
2021 | &security_hook_heads.socket_getpeersec_stream, | |
2022 | list) { | |
2023 | if (size >= strlen(hp->lsm) && | |
2024 | !strncmp(value, hp->lsm, size)) { | |
2025 | socket_getpeersec_stream = hp->hook; | |
2026 | found = true; | |
2027 | break; | |
2028 | } | |
2029 | } | |
2030 | if (!found) | |
2031 | return -EINVAL; | |
2032 | ||
2033 | /* | |
2034 | * The named lsm is active and supplies one or more | |
2035 | * of the relevant hooks. Switch to it. | |
2036 | */ | |
2037 | s = kmemdup(value, size + 1, GFP_KERNEL); | |
2038 | if (s == NULL) | |
2039 | return -ENOMEM; | |
2040 | s[size] = '\0'; | |
2041 | ||
2042 | if (loh->lsm) | |
2043 | kfree(loh->lsm); | |
2044 | loh->lsm = s; | |
2045 | loh->secid_to_secctx = secid_to_secctx; | |
2046 | loh->secctx_to_secid = secctx_to_secid; | |
2047 | loh->socket_getpeersec_stream = socket_getpeersec_stream; | |
2048 | ||
2049 | return size; | |
2050 | } | |
6d9c939d CS |
2051 | |
2052 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
2053 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
2054 | continue; | |
502fb1b1 CS |
2055 | if (lsm == NULL && loh->lsm && strcmp(loh->lsm, hp->lsm)) |
2056 | continue; | |
6d9c939d CS |
2057 | return hp->hook.setprocattr(name, value, size); |
2058 | } | |
2059 | return -EINVAL; | |
20510f2f JM |
2060 | } |
2061 | ||
2062 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2063 | { | |
f25fce3e | 2064 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2065 | } |
20510f2f | 2066 | |
746df9b5 DQ |
2067 | int security_ismaclabel(const char *name) |
2068 | { | |
f25fce3e | 2069 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2070 | } |
2071 | EXPORT_SYMBOL(security_ismaclabel); | |
2072 | ||
20510f2f JM |
2073 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
2074 | { | |
c8001f51 | 2075 | return call_one_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata, |
b1d9e6b0 | 2076 | seclen); |
20510f2f JM |
2077 | } |
2078 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2079 | ||
7bf570dc | 2080 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 2081 | { |
b1d9e6b0 | 2082 | *secid = 0; |
c8001f51 | 2083 | return call_one_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
2084 | } |
2085 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2086 | ||
20510f2f JM |
2087 | void security_release_secctx(char *secdata, u32 seclen) |
2088 | { | |
c8001f51 | 2089 | call_one_void_hook(release_secctx, secdata, seclen); |
20510f2f JM |
2090 | } |
2091 | EXPORT_SYMBOL(security_release_secctx); | |
2092 | ||
6f3be9f5 AG |
2093 | void security_inode_invalidate_secctx(struct inode *inode) |
2094 | { | |
2095 | call_void_hook(inode_invalidate_secctx, inode); | |
2096 | } | |
2097 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2098 | ||
1ee65e37 DQ |
2099 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2100 | { | |
f25fce3e | 2101 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2102 | } |
2103 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2104 | ||
2105 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2106 | { | |
f25fce3e | 2107 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2108 | } |
2109 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2110 | ||
2111 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
2112 | { | |
b1d9e6b0 | 2113 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
2114 | } |
2115 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2116 | ||
20510f2f JM |
2117 | #ifdef CONFIG_SECURITY_NETWORK |
2118 | ||
3610cda5 | 2119 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2120 | { |
f25fce3e | 2121 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2122 | } |
2123 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2124 | ||
2125 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2126 | { | |
f25fce3e | 2127 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2128 | } |
2129 | EXPORT_SYMBOL(security_unix_may_send); | |
2130 | ||
2131 | int security_socket_create(int family, int type, int protocol, int kern) | |
2132 | { | |
f25fce3e | 2133 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2134 | } |
2135 | ||
2136 | int security_socket_post_create(struct socket *sock, int family, | |
2137 | int type, int protocol, int kern) | |
2138 | { | |
f25fce3e | 2139 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2140 | protocol, kern); |
2141 | } | |
2142 | ||
aae7cfcb DH |
2143 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
2144 | { | |
2145 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
2146 | } | |
2147 | EXPORT_SYMBOL(security_socket_socketpair); | |
2148 | ||
20510f2f JM |
2149 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
2150 | { | |
f25fce3e | 2151 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2152 | } |
2153 | ||
2154 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2155 | { | |
f25fce3e | 2156 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2157 | } |
2158 | ||
2159 | int security_socket_listen(struct socket *sock, int backlog) | |
2160 | { | |
f25fce3e | 2161 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2162 | } |
2163 | ||
2164 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2165 | { | |
f25fce3e | 2166 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2167 | } |
2168 | ||
20510f2f JM |
2169 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2170 | { | |
f25fce3e | 2171 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2172 | } |
2173 | ||
2174 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2175 | int size, int flags) | |
2176 | { | |
f25fce3e | 2177 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2178 | } |
2179 | ||
2180 | int security_socket_getsockname(struct socket *sock) | |
2181 | { | |
f25fce3e | 2182 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2183 | } |
2184 | ||
2185 | int security_socket_getpeername(struct socket *sock) | |
2186 | { | |
f25fce3e | 2187 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2188 | } |
2189 | ||
2190 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2191 | { | |
f25fce3e | 2192 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2193 | } |
2194 | ||
2195 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2196 | { | |
f25fce3e | 2197 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2198 | } |
2199 | ||
2200 | int security_socket_shutdown(struct socket *sock, int how) | |
2201 | { | |
f25fce3e | 2202 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2203 | } |
2204 | ||
2205 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2206 | { | |
f25fce3e | 2207 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2208 | } |
2209 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2210 | ||
2211 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2212 | int __user *optlen, unsigned len) | |
2213 | { | |
c8001f51 | 2214 | return call_one_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
b1d9e6b0 | 2215 | optval, optlen, len); |
20510f2f JM |
2216 | } |
2217 | ||
2218 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
2219 | { | |
e308fd3b JB |
2220 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
2221 | skb, secid); | |
20510f2f JM |
2222 | } |
2223 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2224 | ||
2225 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2226 | { | |
68fa0bb2 JJ |
2227 | int rc = lsm_sock_alloc(sk, priority); |
2228 | ||
2229 | if (unlikely(rc)) | |
2230 | return rc; | |
2231 | rc = call_int_hook(sk_alloc_security, 0, sk, family, priority); | |
2232 | if (unlikely(rc)) | |
2233 | security_sk_free(sk); | |
2234 | return rc; | |
20510f2f JM |
2235 | } |
2236 | ||
2237 | void security_sk_free(struct sock *sk) | |
2238 | { | |
f25fce3e | 2239 | call_void_hook(sk_free_security, sk); |
68fa0bb2 JJ |
2240 | kfree(sk->sk_security); |
2241 | sk->sk_security = NULL; | |
20510f2f JM |
2242 | } |
2243 | ||
2244 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2245 | { | |
f25fce3e | 2246 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2247 | } |
6230c9b4 | 2248 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f JM |
2249 | |
2250 | void security_sk_classify_flow(struct sock *sk, struct flowi *fl) | |
2251 | { | |
f25fce3e | 2252 | call_void_hook(sk_getsecid, sk, &fl->flowi_secid); |
20510f2f JM |
2253 | } |
2254 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2255 | ||
2256 | void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) | |
2257 | { | |
f25fce3e | 2258 | call_void_hook(req_classify_flow, req, fl); |
20510f2f JM |
2259 | } |
2260 | EXPORT_SYMBOL(security_req_classify_flow); | |
2261 | ||
2262 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2263 | { | |
f25fce3e | 2264 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2265 | } |
2266 | EXPORT_SYMBOL(security_sock_graft); | |
2267 | ||
2268 | int security_inet_conn_request(struct sock *sk, | |
2269 | struct sk_buff *skb, struct request_sock *req) | |
2270 | { | |
f25fce3e | 2271 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2272 | } |
2273 | EXPORT_SYMBOL(security_inet_conn_request); | |
2274 | ||
2275 | void security_inet_csk_clone(struct sock *newsk, | |
2276 | const struct request_sock *req) | |
2277 | { | |
f25fce3e | 2278 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2279 | } |
2280 | ||
2281 | void security_inet_conn_established(struct sock *sk, | |
2282 | struct sk_buff *skb) | |
2283 | { | |
f25fce3e | 2284 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2285 | } |
72e89f50 | 2286 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2287 | |
2606fd1f EP |
2288 | int security_secmark_relabel_packet(u32 secid) |
2289 | { | |
f25fce3e | 2290 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2291 | } |
2292 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2293 | ||
2294 | void security_secmark_refcount_inc(void) | |
2295 | { | |
f25fce3e | 2296 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2297 | } |
2298 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2299 | ||
2300 | void security_secmark_refcount_dec(void) | |
2301 | { | |
f25fce3e | 2302 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2303 | } |
2304 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2305 | ||
5dbbaf2d PM |
2306 | int security_tun_dev_alloc_security(void **security) |
2307 | { | |
f25fce3e | 2308 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2309 | } |
2310 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2311 | ||
2312 | void security_tun_dev_free_security(void *security) | |
2313 | { | |
f25fce3e | 2314 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2315 | } |
2316 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2317 | ||
2b980dbd PM |
2318 | int security_tun_dev_create(void) |
2319 | { | |
f25fce3e | 2320 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2321 | } |
2322 | EXPORT_SYMBOL(security_tun_dev_create); | |
2323 | ||
5dbbaf2d | 2324 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2325 | { |
f25fce3e | 2326 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2327 | } |
5dbbaf2d | 2328 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2329 | |
5dbbaf2d | 2330 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2331 | { |
f25fce3e | 2332 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2333 | } |
2334 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2335 | ||
5dbbaf2d PM |
2336 | int security_tun_dev_open(void *security) |
2337 | { | |
f25fce3e | 2338 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2339 | } |
2340 | EXPORT_SYMBOL(security_tun_dev_open); | |
2341 | ||
72e89f50 RH |
2342 | int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) |
2343 | { | |
2344 | return call_int_hook(sctp_assoc_request, 0, ep, skb); | |
2345 | } | |
2346 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2347 | ||
2348 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2349 | struct sockaddr *address, int addrlen) | |
2350 | { | |
2351 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2352 | address, addrlen); | |
2353 | } | |
2354 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2355 | ||
2356 | void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, | |
2357 | struct sock *newsk) | |
2358 | { | |
2359 | call_void_hook(sctp_sk_clone, ep, sk, newsk); | |
2360 | } | |
2361 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2362 | ||
20510f2f JM |
2363 | #endif /* CONFIG_SECURITY_NETWORK */ |
2364 | ||
d291f1a6 DJ |
2365 | #ifdef CONFIG_SECURITY_INFINIBAND |
2366 | ||
2367 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2368 | { | |
2369 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2370 | } | |
2371 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2372 | ||
47a2b338 DJ |
2373 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2374 | { | |
2375 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2376 | } | |
2377 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2378 | ||
d291f1a6 DJ |
2379 | int security_ib_alloc_security(void **sec) |
2380 | { | |
2381 | return call_int_hook(ib_alloc_security, 0, sec); | |
2382 | } | |
2383 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2384 | ||
2385 | void security_ib_free_security(void *sec) | |
2386 | { | |
2387 | call_void_hook(ib_free_security, sec); | |
2388 | } | |
2389 | EXPORT_SYMBOL(security_ib_free_security); | |
2390 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2391 | ||
20510f2f JM |
2392 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2393 | ||
52a4c640 NA |
2394 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2395 | struct xfrm_user_sec_ctx *sec_ctx, | |
2396 | gfp_t gfp) | |
20510f2f | 2397 | { |
f25fce3e | 2398 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2399 | } |
2400 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2401 | ||
03e1ad7b PM |
2402 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2403 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2404 | { |
f25fce3e | 2405 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2406 | } |
2407 | ||
03e1ad7b | 2408 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2409 | { |
f25fce3e | 2410 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2411 | } |
2412 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2413 | ||
03e1ad7b | 2414 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2415 | { |
f25fce3e | 2416 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2417 | } |
2418 | ||
2e5aa866 PM |
2419 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2420 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2421 | { |
f25fce3e | 2422 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2423 | } |
2424 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2425 | ||
2426 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2427 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2428 | { | |
f25fce3e | 2429 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2430 | } |
2431 | ||
2432 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2433 | { | |
f25fce3e | 2434 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2435 | } |
2436 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2437 | ||
2438 | void security_xfrm_state_free(struct xfrm_state *x) | |
2439 | { | |
f25fce3e | 2440 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2441 | } |
2442 | ||
03e1ad7b | 2443 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
20510f2f | 2444 | { |
f25fce3e | 2445 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
20510f2f JM |
2446 | } |
2447 | ||
2448 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 DM |
2449 | struct xfrm_policy *xp, |
2450 | const struct flowi *fl) | |
20510f2f | 2451 | { |
b1d9e6b0 CS |
2452 | struct security_hook_list *hp; |
2453 | int rc = 1; | |
2454 | ||
2455 | /* | |
2456 | * Since this function is expected to return 0 or 1, the judgment | |
2457 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2458 | * we can use the first LSM's judgment because currently only SELinux | |
2459 | * supplies this call. | |
2460 | * | |
2461 | * For speed optimization, we explicitly break the loop rather than | |
2462 | * using the macro | |
2463 | */ | |
df0ce173 | 2464 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 CS |
2465 | list) { |
2466 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl); | |
2467 | break; | |
2468 | } | |
2469 | return rc; | |
20510f2f JM |
2470 | } |
2471 | ||
2472 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2473 | { | |
f25fce3e | 2474 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2475 | } |
2476 | ||
2477 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) | |
2478 | { | |
f25fce3e CS |
2479 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, |
2480 | 0); | |
20510f2f JM |
2481 | |
2482 | BUG_ON(rc); | |
2483 | } | |
2484 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2485 | ||
2486 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2487 | ||
2488 | #ifdef CONFIG_KEYS | |
2489 | ||
d84f4f99 DH |
2490 | int security_key_alloc(struct key *key, const struct cred *cred, |
2491 | unsigned long flags) | |
20510f2f | 2492 | { |
f25fce3e | 2493 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2494 | } |
2495 | ||
2496 | void security_key_free(struct key *key) | |
2497 | { | |
f25fce3e | 2498 | call_void_hook(key_free, key); |
20510f2f JM |
2499 | } |
2500 | ||
2501 | int security_key_permission(key_ref_t key_ref, | |
f5895943 | 2502 | const struct cred *cred, unsigned perm) |
20510f2f | 2503 | { |
f25fce3e | 2504 | return call_int_hook(key_permission, 0, key_ref, cred, perm); |
20510f2f JM |
2505 | } |
2506 | ||
70a5bb72 DH |
2507 | int security_key_getsecurity(struct key *key, char **_buffer) |
2508 | { | |
b1d9e6b0 | 2509 | *_buffer = NULL; |
f25fce3e | 2510 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2511 | } |
2512 | ||
20510f2f | 2513 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2514 | |
2515 | #ifdef CONFIG_AUDIT | |
2516 | ||
2517 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2518 | { | |
f25fce3e | 2519 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
03d37d25 AD |
2520 | } |
2521 | ||
2522 | int security_audit_rule_known(struct audit_krule *krule) | |
2523 | { | |
f25fce3e | 2524 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2525 | } |
2526 | ||
2527 | void security_audit_rule_free(void *lsmrule) | |
2528 | { | |
f25fce3e | 2529 | call_void_hook(audit_rule_free, lsmrule); |
03d37d25 AD |
2530 | } |
2531 | ||
90462a5b | 2532 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule) |
03d37d25 | 2533 | { |
90462a5b | 2534 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule); |
03d37d25 | 2535 | } |
b1d9e6b0 | 2536 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2537 | |
2538 | #ifdef CONFIG_BPF_SYSCALL | |
2539 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2540 | { | |
2541 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2542 | } | |
2543 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2544 | { | |
2545 | return call_int_hook(bpf_map, 0, map, fmode); | |
2546 | } | |
2547 | int security_bpf_prog(struct bpf_prog *prog) | |
2548 | { | |
2549 | return call_int_hook(bpf_prog, 0, prog); | |
2550 | } | |
2551 | int security_bpf_map_alloc(struct bpf_map *map) | |
2552 | { | |
2553 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2554 | } | |
2555 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2556 | { | |
2557 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2558 | } | |
2559 | void security_bpf_map_free(struct bpf_map *map) | |
2560 | { | |
2561 | call_void_hook(bpf_map_free_security, map); | |
2562 | } | |
2563 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2564 | { | |
2565 | call_void_hook(bpf_prog_free_security, aux); | |
2566 | } | |
2567 | #endif /* CONFIG_BPF_SYSCALL */ |