Commit | Line | Data |
---|---|---|
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> | |
b89999d0 | 19 | #include <linux/kernel_read_file.h> |
3c4ed7bd | 20 | #include <linux/lsm_hooks.h> |
f381c272 | 21 | #include <linux/integrity.h> |
6c21a7fb | 22 | #include <linux/ima.h> |
3e1be52d | 23 | #include <linux/evm.h> |
40401530 | 24 | #include <linux/fsnotify.h> |
8b3ec681 AV |
25 | #include <linux/mman.h> |
26 | #include <linux/mount.h> | |
27 | #include <linux/personality.h> | |
75331a59 | 28 | #include <linux/backing-dev.h> |
3bb857e4 | 29 | #include <linux/string.h> |
ecd5f82e | 30 | #include <linux/msg.h> |
40401530 | 31 | #include <net/flow.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 | ||
59438b46 SS |
38 | /* |
39 | * These are descriptions of the reasons that can be passed to the | |
40 | * security_locked_down() LSM hook. Placing this array here allows | |
41 | * all security modules to use the same descriptions for auditing | |
42 | * purposes. | |
43 | */ | |
44 | const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = { | |
45 | [LOCKDOWN_NONE] = "none", | |
46 | [LOCKDOWN_MODULE_SIGNATURE] = "unsigned module loading", | |
47 | [LOCKDOWN_DEV_MEM] = "/dev/mem,kmem,port", | |
48 | [LOCKDOWN_EFI_TEST] = "/dev/efi_test access", | |
49 | [LOCKDOWN_KEXEC] = "kexec of unsigned images", | |
50 | [LOCKDOWN_HIBERNATION] = "hibernation", | |
51 | [LOCKDOWN_PCI_ACCESS] = "direct PCI access", | |
52 | [LOCKDOWN_IOPORT] = "raw io port access", | |
53 | [LOCKDOWN_MSR] = "raw MSR access", | |
54 | [LOCKDOWN_ACPI_TABLES] = "modifying ACPI tables", | |
55 | [LOCKDOWN_PCMCIA_CIS] = "direct PCMCIA CIS storage", | |
56 | [LOCKDOWN_TIOCSSERIAL] = "reconfiguration of serial port IO", | |
57 | [LOCKDOWN_MODULE_PARAMETERS] = "unsafe module parameters", | |
58 | [LOCKDOWN_MMIOTRACE] = "unsafe mmio", | |
59 | [LOCKDOWN_DEBUGFS] = "debugfs access", | |
60 | [LOCKDOWN_XMON_WR] = "xmon write access", | |
61 | [LOCKDOWN_INTEGRITY_MAX] = "integrity", | |
62 | [LOCKDOWN_KCORE] = "/proc/kcore access", | |
63 | [LOCKDOWN_KPROBES] = "use of kprobes", | |
64 | [LOCKDOWN_BPF_READ] = "use of bpf to read kernel RAM", | |
65 | [LOCKDOWN_PERF] = "unsafe use of perf", | |
66 | [LOCKDOWN_TRACEFS] = "use of tracefs", | |
67 | [LOCKDOWN_XMON_RW] = "xmon read and write access", | |
c7a5899e | 68 | [LOCKDOWN_XFRM_SECRET] = "xfrm SA secret", |
59438b46 SS |
69 | [LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality", |
70 | }; | |
71 | ||
3dfc9b02 | 72 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
42df744c | 73 | static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain); |
8f408ab6 | 74 | |
33bf60ca | 75 | static struct kmem_cache *lsm_file_cache; |
afb1cbe3 | 76 | static struct kmem_cache *lsm_inode_cache; |
33bf60ca | 77 | |
d69dece5 | 78 | char *lsm_names; |
bbd3662a CS |
79 | static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init; |
80 | ||
076c54c5 | 81 | /* Boot-time LSM user choice */ |
79f7865d | 82 | static __initdata const char *chosen_lsm_order; |
5ef4e419 | 83 | static __initdata const char *chosen_major_lsm; |
1da177e4 | 84 | |
13e735c0 KC |
85 | static __initconst const char * const builtin_lsm_order = CONFIG_LSM; |
86 | ||
2d4d5119 KC |
87 | /* Ordered list of LSMs to initialize. */ |
88 | static __initdata struct lsm_info **ordered_lsms; | |
14bd99c8 | 89 | static __initdata struct lsm_info *exclusive; |
2d4d5119 | 90 | |
9b8c7c14 KC |
91 | static __initdata bool debug; |
92 | #define init_debug(...) \ | |
93 | do { \ | |
94 | if (debug) \ | |
95 | pr_info(__VA_ARGS__); \ | |
96 | } while (0) | |
97 | ||
f4941d75 KC |
98 | static bool __init is_enabled(struct lsm_info *lsm) |
99 | { | |
a8027fb0 KC |
100 | if (!lsm->enabled) |
101 | return false; | |
f4941d75 | 102 | |
a8027fb0 | 103 | return *lsm->enabled; |
f4941d75 KC |
104 | } |
105 | ||
106 | /* Mark an LSM's enabled flag. */ | |
107 | static int lsm_enabled_true __initdata = 1; | |
108 | static int lsm_enabled_false __initdata = 0; | |
109 | static void __init set_enabled(struct lsm_info *lsm, bool enabled) | |
110 | { | |
111 | /* | |
112 | * When an LSM hasn't configured an enable variable, we can use | |
113 | * a hard-coded location for storing the default enabled state. | |
114 | */ | |
115 | if (!lsm->enabled) { | |
116 | if (enabled) | |
117 | lsm->enabled = &lsm_enabled_true; | |
118 | else | |
119 | lsm->enabled = &lsm_enabled_false; | |
120 | } else if (lsm->enabled == &lsm_enabled_true) { | |
121 | if (!enabled) | |
122 | lsm->enabled = &lsm_enabled_false; | |
123 | } else if (lsm->enabled == &lsm_enabled_false) { | |
124 | if (enabled) | |
125 | lsm->enabled = &lsm_enabled_true; | |
126 | } else { | |
127 | *lsm->enabled = enabled; | |
128 | } | |
129 | } | |
130 | ||
2d4d5119 KC |
131 | /* Is an LSM already listed in the ordered LSMs list? */ |
132 | static bool __init exists_ordered_lsm(struct lsm_info *lsm) | |
133 | { | |
134 | struct lsm_info **check; | |
135 | ||
136 | for (check = ordered_lsms; *check; check++) | |
137 | if (*check == lsm) | |
138 | return true; | |
139 | ||
140 | return false; | |
141 | } | |
142 | ||
143 | /* Append an LSM to the list of ordered LSMs to initialize. */ | |
144 | static int last_lsm __initdata; | |
145 | static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from) | |
146 | { | |
147 | /* Ignore duplicate selections. */ | |
148 | if (exists_ordered_lsm(lsm)) | |
149 | return; | |
150 | ||
151 | if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from)) | |
152 | return; | |
153 | ||
a8027fb0 KC |
154 | /* Enable this LSM, if it is not already set. */ |
155 | if (!lsm->enabled) | |
156 | lsm->enabled = &lsm_enabled_true; | |
2d4d5119 | 157 | ordered_lsms[last_lsm++] = lsm; |
a8027fb0 | 158 | |
2d4d5119 KC |
159 | init_debug("%s ordering: %s (%sabled)\n", from, lsm->name, |
160 | is_enabled(lsm) ? "en" : "dis"); | |
161 | } | |
162 | ||
f4941d75 KC |
163 | /* Is an LSM allowed to be initialized? */ |
164 | static bool __init lsm_allowed(struct lsm_info *lsm) | |
165 | { | |
166 | /* Skip if the LSM is disabled. */ | |
167 | if (!is_enabled(lsm)) | |
168 | return false; | |
169 | ||
14bd99c8 KC |
170 | /* Not allowed if another exclusive LSM already initialized. */ |
171 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) { | |
172 | init_debug("exclusive disabled: %s\n", lsm->name); | |
173 | return false; | |
174 | } | |
175 | ||
f4941d75 KC |
176 | return true; |
177 | } | |
178 | ||
bbd3662a CS |
179 | static void __init lsm_set_blob_size(int *need, int *lbs) |
180 | { | |
181 | int offset; | |
182 | ||
183 | if (*need > 0) { | |
184 | offset = *lbs; | |
185 | *lbs += *need; | |
186 | *need = offset; | |
187 | } | |
188 | } | |
189 | ||
190 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
191 | { | |
192 | if (!needed) | |
193 | return; | |
194 | ||
195 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 196 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
197 | /* |
198 | * The inode blob gets an rcu_head in addition to | |
199 | * what the modules might need. | |
200 | */ | |
201 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
202 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
203 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
204 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
205 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
f4ad8f2c | 206 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
207 | } |
208 | ||
d8e9bbd4 KC |
209 | /* Prepare LSM for initialization. */ |
210 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
211 | { |
212 | int enabled = lsm_allowed(lsm); | |
213 | ||
214 | /* Record enablement (to handle any following exclusive LSMs). */ | |
215 | set_enabled(lsm, enabled); | |
216 | ||
d8e9bbd4 | 217 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 218 | if (enabled) { |
14bd99c8 KC |
219 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
220 | exclusive = lsm; | |
221 | init_debug("exclusive chosen: %s\n", lsm->name); | |
222 | } | |
bbd3662a CS |
223 | |
224 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
225 | } |
226 | } | |
227 | ||
228 | /* Initialize a given LSM, if it is enabled. */ | |
229 | static void __init initialize_lsm(struct lsm_info *lsm) | |
230 | { | |
231 | if (is_enabled(lsm)) { | |
232 | int ret; | |
14bd99c8 | 233 | |
f4941d75 KC |
234 | init_debug("initializing %s\n", lsm->name); |
235 | ret = lsm->init(); | |
236 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
237 | } | |
238 | } | |
239 | ||
13e735c0 | 240 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 241 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
242 | { |
243 | struct lsm_info *lsm; | |
13e735c0 KC |
244 | char *sep, *name, *next; |
245 | ||
e2bc445b KC |
246 | /* LSM_ORDER_FIRST is always first. */ |
247 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
248 | if (lsm->order == LSM_ORDER_FIRST) | |
249 | append_ordered_lsm(lsm, "first"); | |
250 | } | |
251 | ||
7e611486 | 252 | /* Process "security=", if given. */ |
7e611486 KC |
253 | if (chosen_major_lsm) { |
254 | struct lsm_info *major; | |
255 | ||
256 | /* | |
257 | * To match the original "security=" behavior, this | |
258 | * explicitly does NOT fallback to another Legacy Major | |
259 | * if the selected one was separately disabled: disable | |
260 | * all non-matching Legacy Major LSMs. | |
261 | */ | |
262 | for (major = __start_lsm_info; major < __end_lsm_info; | |
263 | major++) { | |
264 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
265 | strcmp(major->name, chosen_major_lsm) != 0) { | |
266 | set_enabled(major, false); | |
267 | init_debug("security=%s disabled: %s\n", | |
268 | chosen_major_lsm, major->name); | |
269 | } | |
270 | } | |
271 | } | |
5ef4e419 | 272 | |
13e735c0 KC |
273 | sep = kstrdup(order, GFP_KERNEL); |
274 | next = sep; | |
275 | /* Walk the list, looking for matching LSMs. */ | |
276 | while ((name = strsep(&next, ",")) != NULL) { | |
277 | bool found = false; | |
278 | ||
279 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
280 | if (lsm->order == LSM_ORDER_MUTABLE && |
281 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
282 | append_ordered_lsm(lsm, origin); |
283 | found = true; | |
284 | } | |
285 | } | |
286 | ||
287 | if (!found) | |
288 | init_debug("%s ignored: %s\n", origin, name); | |
657d910b | 289 | } |
c91d8106 CS |
290 | |
291 | /* Process "security=", if given. */ | |
292 | if (chosen_major_lsm) { | |
293 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
294 | if (exists_ordered_lsm(lsm)) | |
295 | continue; | |
296 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
297 | append_ordered_lsm(lsm, "security="); | |
298 | } | |
299 | } | |
300 | ||
301 | /* Disable all LSMs not in the ordered list. */ | |
302 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
303 | if (exists_ordered_lsm(lsm)) | |
304 | continue; | |
305 | set_enabled(lsm, false); | |
306 | init_debug("%s disabled: %s\n", origin, lsm->name); | |
307 | } | |
308 | ||
13e735c0 | 309 | kfree(sep); |
657d910b KC |
310 | } |
311 | ||
1cfb2a51 TH |
312 | static void __init lsm_early_cred(struct cred *cred); |
313 | static void __init lsm_early_task(struct task_struct *task); | |
314 | ||
e6b1db98 MG |
315 | static int lsm_append(const char *new, char **result); |
316 | ||
2d4d5119 KC |
317 | static void __init ordered_lsm_init(void) |
318 | { | |
319 | struct lsm_info **lsm; | |
320 | ||
321 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
322 | GFP_KERNEL); | |
323 | ||
89a9684e KC |
324 | if (chosen_lsm_order) { |
325 | if (chosen_major_lsm) { | |
326 | pr_info("security= is ignored because it is superseded by lsm=\n"); | |
327 | chosen_major_lsm = NULL; | |
328 | } | |
79f7865d | 329 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 330 | } else |
79f7865d | 331 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
332 | |
333 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
334 | prepare_lsm(*lsm); |
335 | ||
bbd3662a | 336 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
33bf60ca | 337 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); |
afb1cbe3 | 338 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); |
ecd5f82e CS |
339 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); |
340 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
f4ad8f2c | 341 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); |
33bf60ca CS |
342 | |
343 | /* | |
344 | * Create any kmem_caches needed for blobs | |
345 | */ | |
346 | if (blob_sizes.lbs_file) | |
347 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
348 | blob_sizes.lbs_file, 0, | |
349 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
350 | if (blob_sizes.lbs_inode) |
351 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
352 | blob_sizes.lbs_inode, 0, | |
353 | SLAB_PANIC, NULL); | |
bbd3662a | 354 | |
1cfb2a51 TH |
355 | lsm_early_cred((struct cred *) current->cred); |
356 | lsm_early_task(current); | |
d8e9bbd4 KC |
357 | for (lsm = ordered_lsms; *lsm; lsm++) |
358 | initialize_lsm(*lsm); | |
2d4d5119 KC |
359 | |
360 | kfree(ordered_lsms); | |
361 | } | |
362 | ||
e6b1db98 MG |
363 | int __init early_security_init(void) |
364 | { | |
365 | int i; | |
366 | struct hlist_head *list = (struct hlist_head *) &security_hook_heads; | |
367 | struct lsm_info *lsm; | |
368 | ||
369 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head); | |
370 | i++) | |
371 | INIT_HLIST_HEAD(&list[i]); | |
372 | ||
373 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
374 | if (!lsm->enabled) | |
375 | lsm->enabled = &lsm_enabled_true; | |
376 | prepare_lsm(lsm); | |
377 | initialize_lsm(lsm); | |
378 | } | |
379 | ||
380 | return 0; | |
381 | } | |
382 | ||
1da177e4 LT |
383 | /** |
384 | * security_init - initializes the security framework | |
385 | * | |
386 | * This should be called early in the kernel initialization sequence. | |
387 | */ | |
388 | int __init security_init(void) | |
389 | { | |
e6b1db98 | 390 | struct lsm_info *lsm; |
3dfc9b02 | 391 | |
98d29170 KC |
392 | pr_info("Security Framework initializing\n"); |
393 | ||
e6b1db98 MG |
394 | /* |
395 | * Append the names of the early LSM modules now that kmalloc() is | |
396 | * available | |
397 | */ | |
398 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
399 | if (lsm->enabled) | |
400 | lsm_append(lsm->name, &lsm_names); | |
401 | } | |
1da177e4 | 402 | |
657d910b KC |
403 | /* Load LSMs in specified order. */ |
404 | ordered_lsm_init(); | |
405 | ||
1da177e4 LT |
406 | return 0; |
407 | } | |
408 | ||
076c54c5 | 409 | /* Save user chosen LSM */ |
5ef4e419 | 410 | static int __init choose_major_lsm(char *str) |
076c54c5 | 411 | { |
5ef4e419 | 412 | chosen_major_lsm = str; |
076c54c5 AD |
413 | return 1; |
414 | } | |
5ef4e419 | 415 | __setup("security=", choose_major_lsm); |
076c54c5 | 416 | |
79f7865d KC |
417 | /* Explicitly choose LSM initialization order. */ |
418 | static int __init choose_lsm_order(char *str) | |
419 | { | |
420 | chosen_lsm_order = str; | |
421 | return 1; | |
422 | } | |
423 | __setup("lsm=", choose_lsm_order); | |
424 | ||
9b8c7c14 KC |
425 | /* Enable LSM order debugging. */ |
426 | static int __init enable_debug(char *str) | |
427 | { | |
428 | debug = true; | |
429 | return 1; | |
430 | } | |
431 | __setup("lsm.debug", enable_debug); | |
432 | ||
3bb857e4 MS |
433 | static bool match_last_lsm(const char *list, const char *lsm) |
434 | { | |
435 | const char *last; | |
436 | ||
437 | if (WARN_ON(!list || !lsm)) | |
438 | return false; | |
439 | last = strrchr(list, ','); | |
440 | if (last) | |
441 | /* Pass the comma, strcmp() will check for '\0' */ | |
442 | last++; | |
443 | else | |
444 | last = list; | |
445 | return !strcmp(last, lsm); | |
446 | } | |
447 | ||
e6b1db98 | 448 | static int lsm_append(const char *new, char **result) |
d69dece5 CS |
449 | { |
450 | char *cp; | |
451 | ||
452 | if (*result == NULL) { | |
453 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
454 | if (*result == NULL) |
455 | return -ENOMEM; | |
d69dece5 | 456 | } else { |
3bb857e4 MS |
457 | /* Check if it is the last registered name */ |
458 | if (match_last_lsm(*result, new)) | |
459 | return 0; | |
d69dece5 CS |
460 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
461 | if (cp == NULL) | |
462 | return -ENOMEM; | |
463 | kfree(*result); | |
464 | *result = cp; | |
465 | } | |
466 | return 0; | |
467 | } | |
468 | ||
d69dece5 CS |
469 | /** |
470 | * security_add_hooks - Add a modules hooks to the hook lists. | |
471 | * @hooks: the hooks to add | |
472 | * @count: the number of hooks to add | |
473 | * @lsm: the name of the security module | |
474 | * | |
475 | * Each LSM has to register its hooks with the infrastructure. | |
476 | */ | |
477 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
478 | char *lsm) | |
479 | { | |
480 | int i; | |
481 | ||
482 | for (i = 0; i < count; i++) { | |
483 | hooks[i].lsm = lsm; | |
df0ce173 | 484 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
d69dece5 | 485 | } |
e6b1db98 MG |
486 | |
487 | /* | |
488 | * Don't try to append during early_security_init(), we'll come back | |
489 | * and fix this up afterwards. | |
490 | */ | |
491 | if (slab_is_available()) { | |
492 | if (lsm_append(lsm, &lsm_names) < 0) | |
493 | panic("%s - Cannot get early memory.\n", __func__); | |
494 | } | |
d69dece5 CS |
495 | } |
496 | ||
42df744c | 497 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 498 | { |
42df744c JK |
499 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
500 | event, data); | |
8f408ab6 | 501 | } |
42df744c | 502 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 503 | |
42df744c | 504 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 505 | { |
42df744c JK |
506 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
507 | nb); | |
8f408ab6 | 508 | } |
42df744c | 509 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 510 | |
42df744c | 511 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 512 | { |
42df744c JK |
513 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
514 | nb); | |
8f408ab6 | 515 | } |
42df744c | 516 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 517 | |
bbd3662a CS |
518 | /** |
519 | * lsm_cred_alloc - allocate a composite cred blob | |
520 | * @cred: the cred that needs a blob | |
521 | * @gfp: allocation type | |
522 | * | |
523 | * Allocate the cred blob for all the modules | |
524 | * | |
525 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
526 | */ | |
527 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
528 | { | |
529 | if (blob_sizes.lbs_cred == 0) { | |
530 | cred->security = NULL; | |
531 | return 0; | |
532 | } | |
533 | ||
534 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
535 | if (cred->security == NULL) | |
536 | return -ENOMEM; | |
537 | return 0; | |
538 | } | |
539 | ||
540 | /** | |
541 | * lsm_early_cred - during initialization allocate a composite cred blob | |
542 | * @cred: the cred that needs a blob | |
543 | * | |
1cfb2a51 | 544 | * Allocate the cred blob for all the modules |
bbd3662a | 545 | */ |
1cfb2a51 | 546 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 547 | { |
1cfb2a51 | 548 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 549 | |
bbd3662a CS |
550 | if (rc) |
551 | panic("%s: Early cred alloc failed.\n", __func__); | |
552 | } | |
553 | ||
33bf60ca CS |
554 | /** |
555 | * lsm_file_alloc - allocate a composite file blob | |
556 | * @file: the file that needs a blob | |
557 | * | |
558 | * Allocate the file blob for all the modules | |
559 | * | |
560 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
561 | */ | |
562 | static int lsm_file_alloc(struct file *file) | |
563 | { | |
564 | if (!lsm_file_cache) { | |
565 | file->f_security = NULL; | |
566 | return 0; | |
567 | } | |
568 | ||
569 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
570 | if (file->f_security == NULL) | |
571 | return -ENOMEM; | |
572 | return 0; | |
573 | } | |
574 | ||
afb1cbe3 CS |
575 | /** |
576 | * lsm_inode_alloc - allocate a composite inode blob | |
577 | * @inode: the inode that needs a blob | |
578 | * | |
579 | * Allocate the inode blob for all the modules | |
580 | * | |
581 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
582 | */ | |
583 | int lsm_inode_alloc(struct inode *inode) | |
584 | { | |
585 | if (!lsm_inode_cache) { | |
586 | inode->i_security = NULL; | |
587 | return 0; | |
588 | } | |
589 | ||
590 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
591 | if (inode->i_security == NULL) | |
592 | return -ENOMEM; | |
593 | return 0; | |
594 | } | |
595 | ||
f4ad8f2c CS |
596 | /** |
597 | * lsm_task_alloc - allocate a composite task blob | |
598 | * @task: the task that needs a blob | |
599 | * | |
600 | * Allocate the task blob for all the modules | |
601 | * | |
602 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
603 | */ | |
3e8c7367 | 604 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c CS |
605 | { |
606 | if (blob_sizes.lbs_task == 0) { | |
607 | task->security = NULL; | |
608 | return 0; | |
609 | } | |
610 | ||
611 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
612 | if (task->security == NULL) | |
613 | return -ENOMEM; | |
614 | return 0; | |
615 | } | |
616 | ||
ecd5f82e CS |
617 | /** |
618 | * lsm_ipc_alloc - allocate a composite ipc blob | |
619 | * @kip: the ipc that needs a blob | |
620 | * | |
621 | * Allocate the ipc blob for all the modules | |
622 | * | |
623 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
624 | */ | |
3e8c7367 | 625 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
626 | { |
627 | if (blob_sizes.lbs_ipc == 0) { | |
628 | kip->security = NULL; | |
629 | return 0; | |
630 | } | |
631 | ||
632 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
633 | if (kip->security == NULL) | |
634 | return -ENOMEM; | |
635 | return 0; | |
636 | } | |
637 | ||
638 | /** | |
639 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
640 | * @mp: the msg_msg that needs a blob | |
641 | * | |
642 | * Allocate the ipc blob for all the modules | |
643 | * | |
644 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
645 | */ | |
3e8c7367 | 646 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
647 | { |
648 | if (blob_sizes.lbs_msg_msg == 0) { | |
649 | mp->security = NULL; | |
650 | return 0; | |
651 | } | |
652 | ||
653 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
654 | if (mp->security == NULL) | |
655 | return -ENOMEM; | |
656 | return 0; | |
657 | } | |
658 | ||
f4ad8f2c CS |
659 | /** |
660 | * lsm_early_task - during initialization allocate a composite task blob | |
661 | * @task: the task that needs a blob | |
662 | * | |
1cfb2a51 | 663 | * Allocate the task blob for all the modules |
f4ad8f2c | 664 | */ |
1cfb2a51 | 665 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 666 | { |
1cfb2a51 | 667 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 668 | |
f4ad8f2c CS |
669 | if (rc) |
670 | panic("%s: Early task alloc failed.\n", __func__); | |
671 | } | |
672 | ||
98e828a0 KS |
673 | /* |
674 | * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and | |
675 | * can be accessed with: | |
676 | * | |
677 | * LSM_RET_DEFAULT(<hook_name>) | |
678 | * | |
679 | * The macros below define static constants for the default value of each | |
680 | * LSM hook. | |
681 | */ | |
682 | #define LSM_RET_DEFAULT(NAME) (NAME##_default) | |
683 | #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME) | |
684 | #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \ | |
685 | static const int LSM_RET_DEFAULT(NAME) = (DEFAULT); | |
686 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ | |
687 | DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME) | |
688 | ||
689 | #include <linux/lsm_hook_defs.h> | |
690 | #undef LSM_HOOK | |
691 | ||
f25fce3e | 692 | /* |
b1d9e6b0 | 693 | * Hook list operation macros. |
1da177e4 | 694 | * |
f25fce3e CS |
695 | * call_void_hook: |
696 | * This is a hook that does not return a value. | |
1da177e4 | 697 | * |
f25fce3e CS |
698 | * call_int_hook: |
699 | * This is a hook that returns a value. | |
1da177e4 | 700 | */ |
1da177e4 | 701 | |
b1d9e6b0 CS |
702 | #define call_void_hook(FUNC, ...) \ |
703 | do { \ | |
704 | struct security_hook_list *P; \ | |
705 | \ | |
df0ce173 | 706 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
707 | P->hook.FUNC(__VA_ARGS__); \ |
708 | } while (0) | |
709 | ||
710 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
711 | int RC = IRC; \ | |
712 | do { \ | |
713 | struct security_hook_list *P; \ | |
714 | \ | |
df0ce173 | 715 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
716 | RC = P->hook.FUNC(__VA_ARGS__); \ |
717 | if (RC != 0) \ | |
718 | break; \ | |
719 | } \ | |
720 | } while (0); \ | |
721 | RC; \ | |
722 | }) | |
1da177e4 | 723 | |
20510f2f JM |
724 | /* Security operations */ |
725 | ||
79af7307 SS |
726 | int security_binder_set_context_mgr(struct task_struct *mgr) |
727 | { | |
f25fce3e | 728 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 SS |
729 | } |
730 | ||
731 | int security_binder_transaction(struct task_struct *from, | |
732 | struct task_struct *to) | |
733 | { | |
f25fce3e | 734 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 SS |
735 | } |
736 | ||
737 | int security_binder_transfer_binder(struct task_struct *from, | |
738 | struct task_struct *to) | |
739 | { | |
f25fce3e | 740 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 SS |
741 | } |
742 | ||
743 | int security_binder_transfer_file(struct task_struct *from, | |
744 | struct task_struct *to, struct file *file) | |
745 | { | |
f25fce3e | 746 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 SS |
747 | } |
748 | ||
9e48858f | 749 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 750 | { |
f25fce3e | 751 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
752 | } |
753 | ||
754 | int security_ptrace_traceme(struct task_struct *parent) | |
755 | { | |
f25fce3e | 756 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
757 | } |
758 | ||
759 | int security_capget(struct task_struct *target, | |
760 | kernel_cap_t *effective, | |
761 | kernel_cap_t *inheritable, | |
762 | kernel_cap_t *permitted) | |
763 | { | |
f25fce3e CS |
764 | return call_int_hook(capget, 0, target, |
765 | effective, inheritable, permitted); | |
20510f2f JM |
766 | } |
767 | ||
d84f4f99 DH |
768 | int security_capset(struct cred *new, const struct cred *old, |
769 | const kernel_cap_t *effective, | |
770 | const kernel_cap_t *inheritable, | |
771 | const kernel_cap_t *permitted) | |
20510f2f | 772 | { |
f25fce3e CS |
773 | return call_int_hook(capset, 0, new, old, |
774 | effective, inheritable, permitted); | |
20510f2f JM |
775 | } |
776 | ||
c1a85a00 MM |
777 | int security_capable(const struct cred *cred, |
778 | struct user_namespace *ns, | |
779 | int cap, | |
780 | unsigned int opts) | |
20510f2f | 781 | { |
c1a85a00 | 782 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
783 | } |
784 | ||
20510f2f JM |
785 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
786 | { | |
f25fce3e | 787 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
788 | } |
789 | ||
790 | int security_quota_on(struct dentry *dentry) | |
791 | { | |
f25fce3e | 792 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
793 | } |
794 | ||
12b3052c | 795 | int security_syslog(int type) |
20510f2f | 796 | { |
f25fce3e | 797 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
798 | } |
799 | ||
457db29b | 800 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 801 | { |
f25fce3e | 802 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
803 | } |
804 | ||
20510f2f JM |
805 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
806 | { | |
b1d9e6b0 CS |
807 | struct security_hook_list *hp; |
808 | int cap_sys_admin = 1; | |
809 | int rc; | |
810 | ||
811 | /* | |
812 | * The module will respond with a positive value if | |
813 | * it thinks the __vm_enough_memory() call should be | |
814 | * made with the cap_sys_admin set. If all of the modules | |
815 | * agree that it should be set it will. If any module | |
816 | * thinks it should not be set it won't. | |
817 | */ | |
df0ce173 | 818 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
819 | rc = hp->hook.vm_enough_memory(mm, pages); |
820 | if (rc <= 0) { | |
821 | cap_sys_admin = 0; | |
822 | break; | |
823 | } | |
824 | } | |
825 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
826 | } |
827 | ||
b8bff599 | 828 | int security_bprm_creds_for_exec(struct linux_binprm *bprm) |
20510f2f | 829 | { |
b8bff599 EB |
830 | return call_int_hook(bprm_creds_for_exec, 0, bprm); |
831 | } | |
832 | ||
56305aa9 | 833 | int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file) |
20510f2f | 834 | { |
56305aa9 | 835 | return call_int_hook(bprm_creds_from_file, 0, bprm, file); |
20510f2f JM |
836 | } |
837 | ||
a6f76f23 | 838 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 839 | { |
6c21a7fb MZ |
840 | int ret; |
841 | ||
f25fce3e | 842 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
843 | if (ret) |
844 | return ret; | |
845 | return ima_bprm_check(bprm); | |
20510f2f JM |
846 | } |
847 | ||
a6f76f23 | 848 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 849 | { |
f25fce3e | 850 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
851 | } |
852 | ||
a6f76f23 | 853 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 854 | { |
f25fce3e | 855 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
856 | } |
857 | ||
0b52075e AV |
858 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
859 | { | |
860 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
861 | } | |
862 | ||
da2441fd DH |
863 | int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param) |
864 | { | |
865 | return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param); | |
866 | } | |
867 | ||
20510f2f JM |
868 | int security_sb_alloc(struct super_block *sb) |
869 | { | |
f25fce3e | 870 | return call_int_hook(sb_alloc_security, 0, sb); |
20510f2f JM |
871 | } |
872 | ||
873 | void security_sb_free(struct super_block *sb) | |
874 | { | |
f25fce3e | 875 | call_void_hook(sb_free_security, sb); |
20510f2f JM |
876 | } |
877 | ||
204cc0cc | 878 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 879 | { |
204cc0cc AV |
880 | if (!*mnt_opts) |
881 | return; | |
882 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
883 | *mnt_opts = NULL; | |
20510f2f | 884 | } |
204cc0cc | 885 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 886 | |
204cc0cc | 887 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 888 | { |
204cc0cc | 889 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 890 | } |
f5c0c26d | 891 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 892 | |
c039bc3c | 893 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 894 | void *mnt_opts) |
20510f2f | 895 | { |
204cc0cc | 896 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 897 | } |
a65001e8 | 898 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 899 | |
a10d7c22 | 900 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 901 | { |
a10d7c22 | 902 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
903 | } |
904 | ||
2069f457 EP |
905 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
906 | { | |
f25fce3e | 907 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
908 | } |
909 | ||
20510f2f JM |
910 | int security_sb_statfs(struct dentry *dentry) |
911 | { | |
f25fce3e | 912 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
913 | } |
914 | ||
8a04c43b | 915 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 916 | const char *type, unsigned long flags, void *data) |
20510f2f | 917 | { |
f25fce3e | 918 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
919 | } |
920 | ||
20510f2f JM |
921 | int security_sb_umount(struct vfsmount *mnt, int flags) |
922 | { | |
f25fce3e | 923 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
924 | } |
925 | ||
3b73b68c | 926 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 927 | { |
f25fce3e | 928 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
929 | } |
930 | ||
c9180a57 | 931 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 932 | void *mnt_opts, |
649f6e77 DQ |
933 | unsigned long kern_flags, |
934 | unsigned long *set_kern_flags) | |
c9180a57 | 935 | { |
b1d9e6b0 | 936 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
937 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
938 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 939 | } |
e0007529 | 940 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 941 | |
094f7b69 | 942 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
943 | struct super_block *newsb, |
944 | unsigned long kern_flags, | |
945 | unsigned long *set_kern_flags) | |
c9180a57 | 946 | { |
0b4d3452 SM |
947 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
948 | kern_flags, set_kern_flags); | |
c9180a57 | 949 | } |
e0007529 EP |
950 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
951 | ||
757cbe59 AV |
952 | int security_add_mnt_opt(const char *option, const char *val, int len, |
953 | void **mnt_opts) | |
e0007529 | 954 | { |
757cbe59 AV |
955 | return call_int_hook(sb_add_mnt_opt, -EINVAL, |
956 | option, val, len, mnt_opts); | |
e0007529 | 957 | } |
757cbe59 | 958 | EXPORT_SYMBOL(security_add_mnt_opt); |
c9180a57 | 959 | |
2db154b3 DH |
960 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
961 | { | |
962 | return call_int_hook(move_mount, 0, from_path, to_path); | |
963 | } | |
964 | ||
ac5656d8 AG |
965 | int security_path_notify(const struct path *path, u64 mask, |
966 | unsigned int obj_type) | |
967 | { | |
968 | return call_int_hook(path_notify, 0, path, mask, obj_type); | |
969 | } | |
970 | ||
20510f2f JM |
971 | int security_inode_alloc(struct inode *inode) |
972 | { | |
afb1cbe3 CS |
973 | int rc = lsm_inode_alloc(inode); |
974 | ||
975 | if (unlikely(rc)) | |
976 | return rc; | |
977 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
978 | if (unlikely(rc)) | |
979 | security_inode_free(inode); | |
980 | return rc; | |
981 | } | |
982 | ||
983 | static void inode_free_by_rcu(struct rcu_head *head) | |
984 | { | |
985 | /* | |
986 | * The rcu head is at the start of the inode blob | |
987 | */ | |
988 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
989 | } |
990 | ||
991 | void security_inode_free(struct inode *inode) | |
992 | { | |
f381c272 | 993 | integrity_inode_free(inode); |
f25fce3e | 994 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
995 | /* |
996 | * The inode may still be referenced in a path walk and | |
997 | * a call to security_inode_permission() can be made | |
998 | * after inode_free_security() is called. Ideally, the VFS | |
999 | * wouldn't do this, but fixing that is a much harder | |
1000 | * job. For now, simply free the i_security via RCU, and | |
1001 | * leave the current inode->i_security pointer intact. | |
1002 | * The inode will be freed after the RCU grace period too. | |
1003 | */ | |
1004 | if (inode->i_security) | |
1005 | call_rcu((struct rcu_head *)inode->i_security, | |
1006 | inode_free_by_rcu); | |
20510f2f JM |
1007 | } |
1008 | ||
d47be3df | 1009 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 1010 | const struct qstr *name, void **ctx, |
d47be3df DQ |
1011 | u32 *ctxlen) |
1012 | { | |
b1d9e6b0 CS |
1013 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
1014 | name, ctx, ctxlen); | |
d47be3df DQ |
1015 | } |
1016 | EXPORT_SYMBOL(security_dentry_init_security); | |
1017 | ||
2602625b VG |
1018 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
1019 | struct qstr *name, | |
1020 | const struct cred *old, struct cred *new) | |
1021 | { | |
1022 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
1023 | name, old, new); | |
1024 | } | |
1025 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
1026 | ||
20510f2f | 1027 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
1028 | const struct qstr *qstr, |
1029 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 1030 | { |
823eb1cc MZ |
1031 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
1032 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
1033 | int ret; |
1034 | ||
20510f2f | 1035 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 1036 | return 0; |
9d8f13ba | 1037 | |
9d8f13ba | 1038 | if (!initxattrs) |
e308fd3b JB |
1039 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
1040 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 1041 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 1042 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 1043 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
1044 | &lsm_xattr->name, |
1045 | &lsm_xattr->value, | |
1046 | &lsm_xattr->value_len); | |
1047 | if (ret) | |
1048 | goto out; | |
823eb1cc MZ |
1049 | |
1050 | evm_xattr = lsm_xattr + 1; | |
1051 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1052 | if (ret) | |
1053 | goto out; | |
9d8f13ba MZ |
1054 | ret = initxattrs(inode, new_xattrs, fs_data); |
1055 | out: | |
9548906b | 1056 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1057 | kfree(xattr->value); |
9d8f13ba MZ |
1058 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1059 | } | |
1060 | EXPORT_SYMBOL(security_inode_init_security); | |
1061 | ||
215b674b LG |
1062 | int security_inode_init_security_anon(struct inode *inode, |
1063 | const struct qstr *name, | |
1064 | const struct inode *context_inode) | |
1065 | { | |
1066 | return call_int_hook(inode_init_security_anon, 0, inode, name, | |
1067 | context_inode); | |
1068 | } | |
1069 | ||
9d8f13ba | 1070 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, |
9548906b | 1071 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1072 | void **value, size_t *len) |
20510f2f JM |
1073 | { |
1074 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1075 | return -EOPNOTSUPP; |
e308fd3b JB |
1076 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1077 | qstr, name, value, len); | |
20510f2f | 1078 | } |
9d8f13ba | 1079 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1080 | |
be6d3e56 | 1081 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1082 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1083 | unsigned int dev) |
1084 | { | |
c6f493d6 | 1085 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1086 | return 0; |
f25fce3e | 1087 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1088 | } |
1089 | EXPORT_SYMBOL(security_path_mknod); | |
1090 | ||
d3607752 | 1091 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1092 | { |
c6f493d6 | 1093 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1094 | return 0; |
f25fce3e | 1095 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1096 | } |
82140443 | 1097 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1098 | |
989f74e0 | 1099 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1100 | { |
c6f493d6 | 1101 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1102 | return 0; |
f25fce3e | 1103 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 KT |
1104 | } |
1105 | ||
989f74e0 | 1106 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1107 | { |
c6f493d6 | 1108 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1109 | return 0; |
f25fce3e | 1110 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1111 | } |
82140443 | 1112 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1113 | |
d3607752 | 1114 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1115 | const char *old_name) |
1116 | { | |
c6f493d6 | 1117 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1118 | return 0; |
f25fce3e | 1119 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 KT |
1120 | } |
1121 | ||
3ccee46a | 1122 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1123 | struct dentry *new_dentry) |
1124 | { | |
c6f493d6 | 1125 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1126 | return 0; |
f25fce3e | 1127 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 KT |
1128 | } |
1129 | ||
3ccee46a AV |
1130 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1131 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1132 | unsigned int flags) |
be6d3e56 | 1133 | { |
c6f493d6 DH |
1134 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1135 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1136 | return 0; |
da1ce067 MS |
1137 | |
1138 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1139 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1140 | old_dir, old_dentry); | |
da1ce067 MS |
1141 | if (err) |
1142 | return err; | |
1143 | } | |
1144 | ||
f25fce3e CS |
1145 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1146 | new_dentry); | |
be6d3e56 | 1147 | } |
82140443 | 1148 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1149 | |
81f4c506 | 1150 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1151 | { |
c6f493d6 | 1152 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1153 | return 0; |
f25fce3e | 1154 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1155 | } |
89eda068 | 1156 | |
be01f9f2 | 1157 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1158 | { |
c6f493d6 | 1159 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1160 | return 0; |
f25fce3e | 1161 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 TH |
1162 | } |
1163 | ||
7fd25dac | 1164 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1165 | { |
c6f493d6 | 1166 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1167 | return 0; |
f25fce3e | 1168 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1169 | } |
8b8efb44 | 1170 | |
77b286c0 | 1171 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1172 | { |
f25fce3e | 1173 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1174 | } |
be6d3e56 KT |
1175 | #endif |
1176 | ||
4acdaf27 | 1177 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1178 | { |
1179 | if (unlikely(IS_PRIVATE(dir))) | |
1180 | return 0; | |
f25fce3e | 1181 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1182 | } |
800a9647 | 1183 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1184 | |
1185 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1186 | struct dentry *new_dentry) | |
1187 | { | |
c6f493d6 | 1188 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1189 | return 0; |
f25fce3e | 1190 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1191 | } |
1192 | ||
1193 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1194 | { | |
c6f493d6 | 1195 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1196 | return 0; |
f25fce3e | 1197 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1198 | } |
1199 | ||
1200 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1201 | const char *old_name) | |
1202 | { | |
1203 | if (unlikely(IS_PRIVATE(dir))) | |
1204 | return 0; | |
f25fce3e | 1205 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1206 | } |
1207 | ||
18bb1db3 | 1208 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1209 | { |
1210 | if (unlikely(IS_PRIVATE(dir))) | |
1211 | return 0; | |
f25fce3e | 1212 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1213 | } |
800a9647 | 1214 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1215 | |
1216 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1217 | { | |
c6f493d6 | 1218 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1219 | return 0; |
f25fce3e | 1220 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1221 | } |
1222 | ||
1a67aafb | 1223 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1224 | { |
1225 | if (unlikely(IS_PRIVATE(dir))) | |
1226 | return 0; | |
f25fce3e | 1227 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1228 | } |
1229 | ||
1230 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1231 | struct inode *new_dir, struct dentry *new_dentry, |
1232 | unsigned int flags) | |
20510f2f | 1233 | { |
c6f493d6 DH |
1234 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1235 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1236 | return 0; |
da1ce067 MS |
1237 | |
1238 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1239 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1240 | old_dir, old_dentry); |
1241 | if (err) | |
1242 | return err; | |
1243 | } | |
1244 | ||
f25fce3e | 1245 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1246 | new_dir, new_dentry); |
1247 | } | |
1248 | ||
1249 | int security_inode_readlink(struct dentry *dentry) | |
1250 | { | |
c6f493d6 | 1251 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1252 | return 0; |
f25fce3e | 1253 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1254 | } |
1255 | ||
bda0be7a N |
1256 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1257 | bool rcu) | |
20510f2f | 1258 | { |
bda0be7a | 1259 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1260 | return 0; |
e22619a2 | 1261 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1262 | } |
1263 | ||
b77b0646 | 1264 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1265 | { |
1266 | if (unlikely(IS_PRIVATE(inode))) | |
1267 | return 0; | |
f25fce3e | 1268 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f JM |
1269 | } |
1270 | ||
1271 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1272 | { | |
817b54aa MZ |
1273 | int ret; |
1274 | ||
c6f493d6 | 1275 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1276 | return 0; |
f25fce3e | 1277 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1278 | if (ret) |
1279 | return ret; | |
1280 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1281 | } |
b1da47e2 | 1282 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1283 | |
3f7036a0 | 1284 | int security_inode_getattr(const struct path *path) |
20510f2f | 1285 | { |
c6f493d6 | 1286 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1287 | return 0; |
f25fce3e | 1288 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1289 | } |
1290 | ||
71bc356f CB |
1291 | int security_inode_setxattr(struct user_namespace *mnt_userns, |
1292 | struct dentry *dentry, const char *name, | |
8f0cfa52 | 1293 | const void *value, size_t size, int flags) |
20510f2f | 1294 | { |
3e1be52d MZ |
1295 | int ret; |
1296 | ||
c6f493d6 | 1297 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1298 | return 0; |
b1d9e6b0 CS |
1299 | /* |
1300 | * SELinux and Smack integrate the cap call, | |
1301 | * so assume that all LSMs supplying this call do so. | |
1302 | */ | |
71bc356f CB |
1303 | ret = call_int_hook(inode_setxattr, 1, mnt_userns, dentry, name, value, |
1304 | size, flags); | |
b1d9e6b0 CS |
1305 | |
1306 | if (ret == 1) | |
1307 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1308 | if (ret) |
1309 | return ret; | |
1310 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1311 | if (ret) |
1312 | return ret; | |
1313 | return evm_inode_setxattr(dentry, name, value, size); | |
20510f2f JM |
1314 | } |
1315 | ||
8f0cfa52 DH |
1316 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1317 | const void *value, size_t size, int flags) | |
20510f2f | 1318 | { |
c6f493d6 | 1319 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1320 | return; |
f25fce3e | 1321 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1322 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1323 | } |
1324 | ||
8f0cfa52 | 1325 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1326 | { |
c6f493d6 | 1327 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1328 | return 0; |
f25fce3e | 1329 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1330 | } |
1331 | ||
1332 | int security_inode_listxattr(struct dentry *dentry) | |
1333 | { | |
c6f493d6 | 1334 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1335 | return 0; |
f25fce3e | 1336 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1337 | } |
1338 | ||
71bc356f CB |
1339 | int security_inode_removexattr(struct user_namespace *mnt_userns, |
1340 | struct dentry *dentry, const char *name) | |
20510f2f | 1341 | { |
3e1be52d MZ |
1342 | int ret; |
1343 | ||
c6f493d6 | 1344 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1345 | return 0; |
b1d9e6b0 CS |
1346 | /* |
1347 | * SELinux and Smack integrate the cap call, | |
1348 | * so assume that all LSMs supplying this call do so. | |
1349 | */ | |
71bc356f | 1350 | ret = call_int_hook(inode_removexattr, 1, mnt_userns, dentry, name); |
b1d9e6b0 | 1351 | if (ret == 1) |
71bc356f | 1352 | ret = cap_inode_removexattr(mnt_userns, dentry, name); |
42c63330 MZ |
1353 | if (ret) |
1354 | return ret; | |
1355 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1356 | if (ret) |
1357 | return ret; | |
1358 | return evm_inode_removexattr(dentry, name); | |
20510f2f JM |
1359 | } |
1360 | ||
b5376771 SH |
1361 | int security_inode_need_killpriv(struct dentry *dentry) |
1362 | { | |
f25fce3e | 1363 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1364 | } |
1365 | ||
71bc356f CB |
1366 | int security_inode_killpriv(struct user_namespace *mnt_userns, |
1367 | struct dentry *dentry) | |
b5376771 | 1368 | { |
71bc356f | 1369 | return call_int_hook(inode_killpriv, 0, mnt_userns, dentry); |
b5376771 SH |
1370 | } |
1371 | ||
71bc356f CB |
1372 | int security_inode_getsecurity(struct user_namespace *mnt_userns, |
1373 | struct inode *inode, const char *name, | |
1374 | void **buffer, bool alloc) | |
20510f2f | 1375 | { |
2885c1e3 CS |
1376 | struct security_hook_list *hp; |
1377 | int rc; | |
1378 | ||
20510f2f | 1379 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1380 | return LSM_RET_DEFAULT(inode_getsecurity); |
2885c1e3 CS |
1381 | /* |
1382 | * Only one module will provide an attribute with a given name. | |
1383 | */ | |
df0ce173 | 1384 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
71bc356f | 1385 | rc = hp->hook.inode_getsecurity(mnt_userns, inode, name, buffer, alloc); |
98e828a0 | 1386 | if (rc != LSM_RET_DEFAULT(inode_getsecurity)) |
2885c1e3 CS |
1387 | return rc; |
1388 | } | |
98e828a0 | 1389 | return LSM_RET_DEFAULT(inode_getsecurity); |
20510f2f JM |
1390 | } |
1391 | ||
1392 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1393 | { | |
2885c1e3 CS |
1394 | struct security_hook_list *hp; |
1395 | int rc; | |
1396 | ||
20510f2f | 1397 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1398 | return LSM_RET_DEFAULT(inode_setsecurity); |
2885c1e3 CS |
1399 | /* |
1400 | * Only one module will provide an attribute with a given name. | |
1401 | */ | |
df0ce173 | 1402 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1403 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1404 | flags); | |
98e828a0 | 1405 | if (rc != LSM_RET_DEFAULT(inode_setsecurity)) |
2885c1e3 CS |
1406 | return rc; |
1407 | } | |
98e828a0 | 1408 | return LSM_RET_DEFAULT(inode_setsecurity); |
20510f2f JM |
1409 | } |
1410 | ||
1411 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1412 | { | |
1413 | if (unlikely(IS_PRIVATE(inode))) | |
1414 | return 0; | |
f25fce3e | 1415 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1416 | } |
c9bccef6 | 1417 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1418 | |
d6335d77 | 1419 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1420 | { |
f25fce3e | 1421 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1422 | } |
1423 | ||
d8ad8b49 VG |
1424 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1425 | { | |
1426 | return call_int_hook(inode_copy_up, 0, src, new); | |
1427 | } | |
1428 | EXPORT_SYMBOL(security_inode_copy_up); | |
1429 | ||
121ab822 VG |
1430 | int security_inode_copy_up_xattr(const char *name) |
1431 | { | |
23e390cd KS |
1432 | struct security_hook_list *hp; |
1433 | int rc; | |
1434 | ||
1435 | /* | |
1436 | * The implementation can return 0 (accept the xattr), 1 (discard the | |
1437 | * xattr), -EOPNOTSUPP if it does not know anything about the xattr or | |
1438 | * any other error code incase of an error. | |
1439 | */ | |
1440 | hlist_for_each_entry(hp, | |
1441 | &security_hook_heads.inode_copy_up_xattr, list) { | |
1442 | rc = hp->hook.inode_copy_up_xattr(name); | |
1443 | if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr)) | |
1444 | return rc; | |
1445 | } | |
1446 | ||
1447 | return LSM_RET_DEFAULT(inode_copy_up_xattr); | |
121ab822 VG |
1448 | } |
1449 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1450 | ||
b230d5ab OM |
1451 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1452 | struct kernfs_node *kn) | |
1453 | { | |
1454 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1455 | } | |
1456 | ||
20510f2f JM |
1457 | int security_file_permission(struct file *file, int mask) |
1458 | { | |
c4ec54b4 EP |
1459 | int ret; |
1460 | ||
f25fce3e | 1461 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1462 | if (ret) |
1463 | return ret; | |
1464 | ||
1465 | return fsnotify_perm(file, mask); | |
20510f2f JM |
1466 | } |
1467 | ||
1468 | int security_file_alloc(struct file *file) | |
1469 | { | |
33bf60ca CS |
1470 | int rc = lsm_file_alloc(file); |
1471 | ||
1472 | if (rc) | |
1473 | return rc; | |
1474 | rc = call_int_hook(file_alloc_security, 0, file); | |
1475 | if (unlikely(rc)) | |
1476 | security_file_free(file); | |
1477 | return rc; | |
20510f2f JM |
1478 | } |
1479 | ||
1480 | void security_file_free(struct file *file) | |
1481 | { | |
33bf60ca CS |
1482 | void *blob; |
1483 | ||
f25fce3e | 1484 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1485 | |
1486 | blob = file->f_security; | |
1487 | if (blob) { | |
1488 | file->f_security = NULL; | |
1489 | kmem_cache_free(lsm_file_cache, blob); | |
1490 | } | |
20510f2f JM |
1491 | } |
1492 | ||
1493 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1494 | { | |
f25fce3e | 1495 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f | 1496 | } |
292f902a | 1497 | EXPORT_SYMBOL_GPL(security_file_ioctl); |
20510f2f | 1498 | |
98de59bf | 1499 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1500 | { |
8b3ec681 | 1501 | /* |
98de59bf AV |
1502 | * Does we have PROT_READ and does the application expect |
1503 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1504 | */ |
98de59bf AV |
1505 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1506 | return prot; | |
8b3ec681 | 1507 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1508 | return prot; |
1509 | /* | |
1510 | * if that's an anonymous mapping, let it. | |
1511 | */ | |
1512 | if (!file) | |
1513 | return prot | PROT_EXEC; | |
1514 | /* | |
1515 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1516 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1517 | */ |
90f8572b | 1518 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1519 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1520 | if (file->f_op->mmap_capabilities) { |
1521 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1522 | if (!(caps & NOMMU_MAP_EXEC)) | |
1523 | return prot; | |
1524 | } | |
8b3ec681 | 1525 | #endif |
98de59bf | 1526 | return prot | PROT_EXEC; |
8b3ec681 | 1527 | } |
98de59bf AV |
1528 | /* anything on noexec mount won't get PROT_EXEC */ |
1529 | return prot; | |
1530 | } | |
1531 | ||
1532 | int security_mmap_file(struct file *file, unsigned long prot, | |
1533 | unsigned long flags) | |
1534 | { | |
1535 | int ret; | |
f25fce3e | 1536 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1537 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1538 | if (ret) |
1539 | return ret; | |
1540 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1541 | } |
1542 | ||
e5467859 AV |
1543 | int security_mmap_addr(unsigned long addr) |
1544 | { | |
f25fce3e | 1545 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1546 | } |
1547 | ||
20510f2f JM |
1548 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1549 | unsigned long prot) | |
1550 | { | |
8eb613c0 MZ |
1551 | int ret; |
1552 | ||
1553 | ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot); | |
1554 | if (ret) | |
1555 | return ret; | |
1556 | return ima_file_mprotect(vma, prot); | |
20510f2f JM |
1557 | } |
1558 | ||
1559 | int security_file_lock(struct file *file, unsigned int cmd) | |
1560 | { | |
f25fce3e | 1561 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1562 | } |
1563 | ||
1564 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1565 | { | |
f25fce3e | 1566 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1567 | } |
1568 | ||
e0b93edd | 1569 | void security_file_set_fowner(struct file *file) |
20510f2f | 1570 | { |
f25fce3e | 1571 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1572 | } |
1573 | ||
1574 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1575 | struct fown_struct *fown, int sig) | |
1576 | { | |
f25fce3e | 1577 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1578 | } |
1579 | ||
1580 | int security_file_receive(struct file *file) | |
1581 | { | |
f25fce3e | 1582 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1583 | } |
1584 | ||
e3f20ae2 | 1585 | int security_file_open(struct file *file) |
20510f2f | 1586 | { |
c4ec54b4 EP |
1587 | int ret; |
1588 | ||
94817692 | 1589 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1590 | if (ret) |
1591 | return ret; | |
1592 | ||
1593 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1594 | } |
1595 | ||
e4e55b47 TH |
1596 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1597 | { | |
f4ad8f2c CS |
1598 | int rc = lsm_task_alloc(task); |
1599 | ||
1600 | if (rc) | |
1601 | return rc; | |
1602 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1603 | if (unlikely(rc)) | |
1604 | security_task_free(task); | |
1605 | return rc; | |
e4e55b47 TH |
1606 | } |
1607 | ||
1a2a4d06 KC |
1608 | void security_task_free(struct task_struct *task) |
1609 | { | |
f25fce3e | 1610 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1611 | |
1612 | kfree(task->security); | |
1613 | task->security = NULL; | |
1a2a4d06 KC |
1614 | } |
1615 | ||
ee18d64c DH |
1616 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1617 | { | |
bbd3662a CS |
1618 | int rc = lsm_cred_alloc(cred, gfp); |
1619 | ||
1620 | if (rc) | |
1621 | return rc; | |
1622 | ||
1623 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1624 | if (unlikely(rc)) |
bbd3662a CS |
1625 | security_cred_free(cred); |
1626 | return rc; | |
ee18d64c DH |
1627 | } |
1628 | ||
d84f4f99 | 1629 | void security_cred_free(struct cred *cred) |
20510f2f | 1630 | { |
a5795fd3 JM |
1631 | /* |
1632 | * There is a failure case in prepare_creds() that | |
1633 | * may result in a call here with ->security being NULL. | |
1634 | */ | |
1635 | if (unlikely(cred->security == NULL)) | |
1636 | return; | |
1637 | ||
f25fce3e | 1638 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1639 | |
1640 | kfree(cred->security); | |
1641 | cred->security = NULL; | |
20510f2f JM |
1642 | } |
1643 | ||
d84f4f99 | 1644 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1645 | { |
bbd3662a CS |
1646 | int rc = lsm_cred_alloc(new, gfp); |
1647 | ||
1648 | if (rc) | |
1649 | return rc; | |
1650 | ||
1651 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1652 | if (unlikely(rc)) |
bbd3662a CS |
1653 | security_cred_free(new); |
1654 | return rc; | |
d84f4f99 DH |
1655 | } |
1656 | ||
ee18d64c DH |
1657 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1658 | { | |
f25fce3e | 1659 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1660 | } |
1661 | ||
3ec30113 MG |
1662 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
1663 | { | |
1664 | *secid = 0; | |
1665 | call_void_hook(cred_getsecid, c, secid); | |
1666 | } | |
1667 | EXPORT_SYMBOL(security_cred_getsecid); | |
1668 | ||
3a3b7ce9 DH |
1669 | int security_kernel_act_as(struct cred *new, u32 secid) |
1670 | { | |
f25fce3e | 1671 | return call_int_hook(kernel_act_as, 0, new, secid); |
3a3b7ce9 DH |
1672 | } |
1673 | ||
1674 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1675 | { | |
f25fce3e | 1676 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1677 | } |
1678 | ||
dd8dbf2e | 1679 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1680 | { |
6eb864c1 MK |
1681 | int ret; |
1682 | ||
1683 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1684 | if (ret) | |
1685 | return ret; | |
1686 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1687 | } |
1688 | ||
2039bda1 KC |
1689 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, |
1690 | bool contents) | |
39eeb4fb MZ |
1691 | { |
1692 | int ret; | |
1693 | ||
2039bda1 | 1694 | ret = call_int_hook(kernel_read_file, 0, file, id, contents); |
39eeb4fb MZ |
1695 | if (ret) |
1696 | return ret; | |
2039bda1 | 1697 | return ima_read_file(file, id, contents); |
39eeb4fb MZ |
1698 | } |
1699 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1700 | ||
bc8ca5b9 MZ |
1701 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1702 | enum kernel_read_file_id id) | |
b44a7dfc | 1703 | { |
cf222217 MZ |
1704 | int ret; |
1705 | ||
1706 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1707 | if (ret) | |
1708 | return ret; | |
1709 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1710 | } |
1711 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1712 | ||
b64fcae7 | 1713 | int security_kernel_load_data(enum kernel_load_data_id id, bool contents) |
377179cd | 1714 | { |
16c267aa MZ |
1715 | int ret; |
1716 | ||
b64fcae7 | 1717 | ret = call_int_hook(kernel_load_data, 0, id, contents); |
16c267aa MZ |
1718 | if (ret) |
1719 | return ret; | |
b64fcae7 | 1720 | return ima_load_data(id, contents); |
377179cd | 1721 | } |
83a68a06 | 1722 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1723 | |
b64fcae7 KC |
1724 | int security_kernel_post_load_data(char *buf, loff_t size, |
1725 | enum kernel_load_data_id id, | |
1726 | char *description) | |
1727 | { | |
1728 | int ret; | |
1729 | ||
1730 | ret = call_int_hook(kernel_post_load_data, 0, buf, size, id, | |
1731 | description); | |
1732 | if (ret) | |
1733 | return ret; | |
1734 | return ima_post_load_data(buf, size, id, description); | |
1735 | } | |
1736 | EXPORT_SYMBOL_GPL(security_kernel_post_load_data); | |
1737 | ||
d84f4f99 DH |
1738 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1739 | int flags) | |
20510f2f | 1740 | { |
f25fce3e | 1741 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1742 | } |
1743 | ||
39030e13 TC |
1744 | int security_task_fix_setgid(struct cred *new, const struct cred *old, |
1745 | int flags) | |
1746 | { | |
1747 | return call_int_hook(task_fix_setgid, 0, new, old, flags); | |
1748 | } | |
1749 | ||
20510f2f JM |
1750 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1751 | { | |
f25fce3e | 1752 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1753 | } |
1754 | ||
1755 | int security_task_getpgid(struct task_struct *p) | |
1756 | { | |
f25fce3e | 1757 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1758 | } |
1759 | ||
1760 | int security_task_getsid(struct task_struct *p) | |
1761 | { | |
f25fce3e | 1762 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1763 | } |
1764 | ||
1765 | void security_task_getsecid(struct task_struct *p, u32 *secid) | |
1766 | { | |
b1d9e6b0 | 1767 | *secid = 0; |
f25fce3e | 1768 | call_void_hook(task_getsecid, p, secid); |
20510f2f JM |
1769 | } |
1770 | EXPORT_SYMBOL(security_task_getsecid); | |
1771 | ||
20510f2f JM |
1772 | int security_task_setnice(struct task_struct *p, int nice) |
1773 | { | |
f25fce3e | 1774 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1775 | } |
1776 | ||
1777 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1778 | { | |
f25fce3e | 1779 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1780 | } |
1781 | ||
1782 | int security_task_getioprio(struct task_struct *p) | |
1783 | { | |
f25fce3e | 1784 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1785 | } |
1786 | ||
791ec491 SS |
1787 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1788 | unsigned int flags) | |
1789 | { | |
1790 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1791 | } | |
1792 | ||
8fd00b4d JS |
1793 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1794 | struct rlimit *new_rlim) | |
20510f2f | 1795 | { |
f25fce3e | 1796 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1797 | } |
1798 | ||
b0ae1981 | 1799 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1800 | { |
f25fce3e | 1801 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1802 | } |
1803 | ||
1804 | int security_task_getscheduler(struct task_struct *p) | |
1805 | { | |
f25fce3e | 1806 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1807 | } |
1808 | ||
1809 | int security_task_movememory(struct task_struct *p) | |
1810 | { | |
f25fce3e | 1811 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1812 | } |
1813 | ||
ae7795bc | 1814 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 1815 | int sig, const struct cred *cred) |
20510f2f | 1816 | { |
6b4f3d01 | 1817 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
1818 | } |
1819 | ||
20510f2f | 1820 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1821 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1822 | { |
b1d9e6b0 | 1823 | int thisrc; |
98e828a0 | 1824 | int rc = LSM_RET_DEFAULT(task_prctl); |
b1d9e6b0 CS |
1825 | struct security_hook_list *hp; |
1826 | ||
df0ce173 | 1827 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 | 1828 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
98e828a0 | 1829 | if (thisrc != LSM_RET_DEFAULT(task_prctl)) { |
b1d9e6b0 CS |
1830 | rc = thisrc; |
1831 | if (thisrc != 0) | |
1832 | break; | |
1833 | } | |
1834 | } | |
1835 | return rc; | |
20510f2f JM |
1836 | } |
1837 | ||
1838 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1839 | { | |
f25fce3e | 1840 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1841 | } |
1842 | ||
1843 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1844 | { | |
f25fce3e | 1845 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1846 | } |
1847 | ||
8a076191 AD |
1848 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1849 | { | |
b1d9e6b0 | 1850 | *secid = 0; |
f25fce3e | 1851 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1852 | } |
1853 | ||
20510f2f JM |
1854 | int security_msg_msg_alloc(struct msg_msg *msg) |
1855 | { | |
ecd5f82e CS |
1856 | int rc = lsm_msg_msg_alloc(msg); |
1857 | ||
1858 | if (unlikely(rc)) | |
1859 | return rc; | |
1860 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
1861 | if (unlikely(rc)) | |
1862 | security_msg_msg_free(msg); | |
1863 | return rc; | |
20510f2f JM |
1864 | } |
1865 | ||
1866 | void security_msg_msg_free(struct msg_msg *msg) | |
1867 | { | |
f25fce3e | 1868 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
1869 | kfree(msg->security); |
1870 | msg->security = NULL; | |
20510f2f JM |
1871 | } |
1872 | ||
d8c6e854 | 1873 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 1874 | { |
ecd5f82e CS |
1875 | int rc = lsm_ipc_alloc(msq); |
1876 | ||
1877 | if (unlikely(rc)) | |
1878 | return rc; | |
1879 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
1880 | if (unlikely(rc)) | |
1881 | security_msg_queue_free(msq); | |
1882 | return rc; | |
20510f2f JM |
1883 | } |
1884 | ||
d8c6e854 | 1885 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 1886 | { |
f25fce3e | 1887 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
1888 | kfree(msq->security); |
1889 | msq->security = NULL; | |
20510f2f JM |
1890 | } |
1891 | ||
d8c6e854 | 1892 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 1893 | { |
f25fce3e | 1894 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
1895 | } |
1896 | ||
d8c6e854 | 1897 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 1898 | { |
f25fce3e | 1899 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
1900 | } |
1901 | ||
d8c6e854 | 1902 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
1903 | struct msg_msg *msg, int msqflg) |
1904 | { | |
f25fce3e | 1905 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
1906 | } |
1907 | ||
d8c6e854 | 1908 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
1909 | struct task_struct *target, long type, int mode) |
1910 | { | |
f25fce3e | 1911 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
1912 | } |
1913 | ||
7191adff | 1914 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 1915 | { |
ecd5f82e CS |
1916 | int rc = lsm_ipc_alloc(shp); |
1917 | ||
1918 | if (unlikely(rc)) | |
1919 | return rc; | |
1920 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
1921 | if (unlikely(rc)) | |
1922 | security_shm_free(shp); | |
1923 | return rc; | |
20510f2f JM |
1924 | } |
1925 | ||
7191adff | 1926 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 1927 | { |
f25fce3e | 1928 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
1929 | kfree(shp->security); |
1930 | shp->security = NULL; | |
20510f2f JM |
1931 | } |
1932 | ||
7191adff | 1933 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 1934 | { |
f25fce3e | 1935 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
1936 | } |
1937 | ||
7191adff | 1938 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 1939 | { |
f25fce3e | 1940 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
1941 | } |
1942 | ||
7191adff | 1943 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 1944 | { |
f25fce3e | 1945 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
1946 | } |
1947 | ||
aefad959 | 1948 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 1949 | { |
ecd5f82e CS |
1950 | int rc = lsm_ipc_alloc(sma); |
1951 | ||
1952 | if (unlikely(rc)) | |
1953 | return rc; | |
1954 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
1955 | if (unlikely(rc)) | |
1956 | security_sem_free(sma); | |
1957 | return rc; | |
20510f2f JM |
1958 | } |
1959 | ||
aefad959 | 1960 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 1961 | { |
f25fce3e | 1962 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
1963 | kfree(sma->security); |
1964 | sma->security = NULL; | |
20510f2f JM |
1965 | } |
1966 | ||
aefad959 | 1967 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 1968 | { |
f25fce3e | 1969 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
1970 | } |
1971 | ||
aefad959 | 1972 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 1973 | { |
f25fce3e | 1974 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
1975 | } |
1976 | ||
aefad959 | 1977 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
1978 | unsigned nsops, int alter) |
1979 | { | |
f25fce3e | 1980 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
1981 | } |
1982 | ||
1983 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
1984 | { | |
1985 | if (unlikely(inode && IS_PRIVATE(inode))) | |
1986 | return; | |
f25fce3e | 1987 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
1988 | } |
1989 | EXPORT_SYMBOL(security_d_instantiate); | |
1990 | ||
6d9c939d CS |
1991 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
1992 | char **value) | |
20510f2f | 1993 | { |
6d9c939d CS |
1994 | struct security_hook_list *hp; |
1995 | ||
1996 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
1997 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1998 | continue; | |
1999 | return hp->hook.getprocattr(p, name, value); | |
2000 | } | |
98e828a0 | 2001 | return LSM_RET_DEFAULT(getprocattr); |
20510f2f JM |
2002 | } |
2003 | ||
6d9c939d CS |
2004 | int security_setprocattr(const char *lsm, const char *name, void *value, |
2005 | size_t size) | |
20510f2f | 2006 | { |
6d9c939d CS |
2007 | struct security_hook_list *hp; |
2008 | ||
2009 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
2010 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
2011 | continue; | |
2012 | return hp->hook.setprocattr(name, value, size); | |
2013 | } | |
98e828a0 | 2014 | return LSM_RET_DEFAULT(setprocattr); |
20510f2f JM |
2015 | } |
2016 | ||
2017 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2018 | { | |
f25fce3e | 2019 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2020 | } |
20510f2f | 2021 | |
746df9b5 DQ |
2022 | int security_ismaclabel(const char *name) |
2023 | { | |
f25fce3e | 2024 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2025 | } |
2026 | EXPORT_SYMBOL(security_ismaclabel); | |
2027 | ||
20510f2f JM |
2028 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
2029 | { | |
0550cfe8 KS |
2030 | struct security_hook_list *hp; |
2031 | int rc; | |
2032 | ||
2033 | /* | |
2034 | * Currently, only one LSM can implement secid_to_secctx (i.e this | |
2035 | * LSM hook is not "stackable"). | |
2036 | */ | |
2037 | hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) { | |
2038 | rc = hp->hook.secid_to_secctx(secid, secdata, seclen); | |
2039 | if (rc != LSM_RET_DEFAULT(secid_to_secctx)) | |
2040 | return rc; | |
2041 | } | |
2042 | ||
2043 | return LSM_RET_DEFAULT(secid_to_secctx); | |
20510f2f JM |
2044 | } |
2045 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2046 | ||
7bf570dc | 2047 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 2048 | { |
b1d9e6b0 | 2049 | *secid = 0; |
f25fce3e | 2050 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
2051 | } |
2052 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2053 | ||
20510f2f JM |
2054 | void security_release_secctx(char *secdata, u32 seclen) |
2055 | { | |
f25fce3e | 2056 | call_void_hook(release_secctx, secdata, seclen); |
20510f2f JM |
2057 | } |
2058 | EXPORT_SYMBOL(security_release_secctx); | |
2059 | ||
6f3be9f5 AG |
2060 | void security_inode_invalidate_secctx(struct inode *inode) |
2061 | { | |
2062 | call_void_hook(inode_invalidate_secctx, inode); | |
2063 | } | |
2064 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2065 | ||
1ee65e37 DQ |
2066 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2067 | { | |
f25fce3e | 2068 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2069 | } |
2070 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2071 | ||
2072 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2073 | { | |
f25fce3e | 2074 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2075 | } |
2076 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2077 | ||
2078 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
2079 | { | |
b1d9e6b0 | 2080 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
2081 | } |
2082 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2083 | ||
344fa64e DH |
2084 | #ifdef CONFIG_WATCH_QUEUE |
2085 | int security_post_notification(const struct cred *w_cred, | |
2086 | const struct cred *cred, | |
2087 | struct watch_notification *n) | |
2088 | { | |
2089 | return call_int_hook(post_notification, 0, w_cred, cred, n); | |
2090 | } | |
2091 | #endif /* CONFIG_WATCH_QUEUE */ | |
2092 | ||
998f5040 DH |
2093 | #ifdef CONFIG_KEY_NOTIFICATIONS |
2094 | int security_watch_key(struct key *key) | |
2095 | { | |
2096 | return call_int_hook(watch_key, 0, key); | |
2097 | } | |
2098 | #endif | |
2099 | ||
20510f2f JM |
2100 | #ifdef CONFIG_SECURITY_NETWORK |
2101 | ||
3610cda5 | 2102 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2103 | { |
f25fce3e | 2104 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2105 | } |
2106 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2107 | ||
2108 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2109 | { | |
f25fce3e | 2110 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2111 | } |
2112 | EXPORT_SYMBOL(security_unix_may_send); | |
2113 | ||
2114 | int security_socket_create(int family, int type, int protocol, int kern) | |
2115 | { | |
f25fce3e | 2116 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2117 | } |
2118 | ||
2119 | int security_socket_post_create(struct socket *sock, int family, | |
2120 | int type, int protocol, int kern) | |
2121 | { | |
f25fce3e | 2122 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2123 | protocol, kern); |
2124 | } | |
2125 | ||
aae7cfcb DH |
2126 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
2127 | { | |
2128 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
2129 | } | |
2130 | EXPORT_SYMBOL(security_socket_socketpair); | |
2131 | ||
20510f2f JM |
2132 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
2133 | { | |
f25fce3e | 2134 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2135 | } |
2136 | ||
2137 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2138 | { | |
f25fce3e | 2139 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2140 | } |
2141 | ||
2142 | int security_socket_listen(struct socket *sock, int backlog) | |
2143 | { | |
f25fce3e | 2144 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2145 | } |
2146 | ||
2147 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2148 | { | |
f25fce3e | 2149 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2150 | } |
2151 | ||
20510f2f JM |
2152 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2153 | { | |
f25fce3e | 2154 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2155 | } |
2156 | ||
2157 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2158 | int size, int flags) | |
2159 | { | |
f25fce3e | 2160 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2161 | } |
2162 | ||
2163 | int security_socket_getsockname(struct socket *sock) | |
2164 | { | |
f25fce3e | 2165 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2166 | } |
2167 | ||
2168 | int security_socket_getpeername(struct socket *sock) | |
2169 | { | |
f25fce3e | 2170 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2171 | } |
2172 | ||
2173 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2174 | { | |
f25fce3e | 2175 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2176 | } |
2177 | ||
2178 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2179 | { | |
f25fce3e | 2180 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2181 | } |
2182 | ||
2183 | int security_socket_shutdown(struct socket *sock, int how) | |
2184 | { | |
f25fce3e | 2185 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2186 | } |
2187 | ||
2188 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2189 | { | |
f25fce3e | 2190 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2191 | } |
2192 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2193 | ||
2194 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2195 | int __user *optlen, unsigned len) | |
2196 | { | |
b1d9e6b0 CS |
2197 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
2198 | optval, optlen, len); | |
20510f2f JM |
2199 | } |
2200 | ||
2201 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
2202 | { | |
e308fd3b JB |
2203 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
2204 | skb, secid); | |
20510f2f JM |
2205 | } |
2206 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2207 | ||
2208 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2209 | { | |
f25fce3e | 2210 | return call_int_hook(sk_alloc_security, 0, sk, family, priority); |
20510f2f JM |
2211 | } |
2212 | ||
2213 | void security_sk_free(struct sock *sk) | |
2214 | { | |
f25fce3e | 2215 | call_void_hook(sk_free_security, sk); |
20510f2f JM |
2216 | } |
2217 | ||
2218 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2219 | { | |
f25fce3e | 2220 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2221 | } |
6230c9b4 | 2222 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f | 2223 | |
3df98d79 | 2224 | void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic) |
20510f2f | 2225 | { |
3df98d79 | 2226 | call_void_hook(sk_getsecid, sk, &flic->flowic_secid); |
20510f2f JM |
2227 | } |
2228 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2229 | ||
3df98d79 PM |
2230 | void security_req_classify_flow(const struct request_sock *req, |
2231 | struct flowi_common *flic) | |
20510f2f | 2232 | { |
3df98d79 | 2233 | call_void_hook(req_classify_flow, req, flic); |
20510f2f JM |
2234 | } |
2235 | EXPORT_SYMBOL(security_req_classify_flow); | |
2236 | ||
2237 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2238 | { | |
f25fce3e | 2239 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2240 | } |
2241 | EXPORT_SYMBOL(security_sock_graft); | |
2242 | ||
41dd9596 | 2243 | int security_inet_conn_request(const struct sock *sk, |
20510f2f JM |
2244 | struct sk_buff *skb, struct request_sock *req) |
2245 | { | |
f25fce3e | 2246 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2247 | } |
2248 | EXPORT_SYMBOL(security_inet_conn_request); | |
2249 | ||
2250 | void security_inet_csk_clone(struct sock *newsk, | |
2251 | const struct request_sock *req) | |
2252 | { | |
f25fce3e | 2253 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2254 | } |
2255 | ||
2256 | void security_inet_conn_established(struct sock *sk, | |
2257 | struct sk_buff *skb) | |
2258 | { | |
f25fce3e | 2259 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2260 | } |
72e89f50 | 2261 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2262 | |
2606fd1f EP |
2263 | int security_secmark_relabel_packet(u32 secid) |
2264 | { | |
f25fce3e | 2265 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2266 | } |
2267 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2268 | ||
2269 | void security_secmark_refcount_inc(void) | |
2270 | { | |
f25fce3e | 2271 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2272 | } |
2273 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2274 | ||
2275 | void security_secmark_refcount_dec(void) | |
2276 | { | |
f25fce3e | 2277 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2278 | } |
2279 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2280 | ||
5dbbaf2d PM |
2281 | int security_tun_dev_alloc_security(void **security) |
2282 | { | |
f25fce3e | 2283 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2284 | } |
2285 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2286 | ||
2287 | void security_tun_dev_free_security(void *security) | |
2288 | { | |
f25fce3e | 2289 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2290 | } |
2291 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2292 | ||
2b980dbd PM |
2293 | int security_tun_dev_create(void) |
2294 | { | |
f25fce3e | 2295 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2296 | } |
2297 | EXPORT_SYMBOL(security_tun_dev_create); | |
2298 | ||
5dbbaf2d | 2299 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2300 | { |
f25fce3e | 2301 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2302 | } |
5dbbaf2d | 2303 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2304 | |
5dbbaf2d | 2305 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2306 | { |
f25fce3e | 2307 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2308 | } |
2309 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2310 | ||
5dbbaf2d PM |
2311 | int security_tun_dev_open(void *security) |
2312 | { | |
f25fce3e | 2313 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2314 | } |
2315 | EXPORT_SYMBOL(security_tun_dev_open); | |
2316 | ||
72e89f50 RH |
2317 | int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) |
2318 | { | |
2319 | return call_int_hook(sctp_assoc_request, 0, ep, skb); | |
2320 | } | |
2321 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2322 | ||
2323 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2324 | struct sockaddr *address, int addrlen) | |
2325 | { | |
2326 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2327 | address, addrlen); | |
2328 | } | |
2329 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2330 | ||
2331 | void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, | |
2332 | struct sock *newsk) | |
2333 | { | |
2334 | call_void_hook(sctp_sk_clone, ep, sk, newsk); | |
2335 | } | |
2336 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2337 | ||
20510f2f JM |
2338 | #endif /* CONFIG_SECURITY_NETWORK */ |
2339 | ||
d291f1a6 DJ |
2340 | #ifdef CONFIG_SECURITY_INFINIBAND |
2341 | ||
2342 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2343 | { | |
2344 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2345 | } | |
2346 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2347 | ||
47a2b338 DJ |
2348 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2349 | { | |
2350 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2351 | } | |
2352 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2353 | ||
d291f1a6 DJ |
2354 | int security_ib_alloc_security(void **sec) |
2355 | { | |
2356 | return call_int_hook(ib_alloc_security, 0, sec); | |
2357 | } | |
2358 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2359 | ||
2360 | void security_ib_free_security(void *sec) | |
2361 | { | |
2362 | call_void_hook(ib_free_security, sec); | |
2363 | } | |
2364 | EXPORT_SYMBOL(security_ib_free_security); | |
2365 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2366 | ||
20510f2f JM |
2367 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2368 | ||
52a4c640 NA |
2369 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2370 | struct xfrm_user_sec_ctx *sec_ctx, | |
2371 | gfp_t gfp) | |
20510f2f | 2372 | { |
f25fce3e | 2373 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2374 | } |
2375 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2376 | ||
03e1ad7b PM |
2377 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2378 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2379 | { |
f25fce3e | 2380 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2381 | } |
2382 | ||
03e1ad7b | 2383 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2384 | { |
f25fce3e | 2385 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2386 | } |
2387 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2388 | ||
03e1ad7b | 2389 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2390 | { |
f25fce3e | 2391 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2392 | } |
2393 | ||
2e5aa866 PM |
2394 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2395 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2396 | { |
f25fce3e | 2397 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2398 | } |
2399 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2400 | ||
2401 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2402 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2403 | { | |
f25fce3e | 2404 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2405 | } |
2406 | ||
2407 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2408 | { | |
f25fce3e | 2409 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2410 | } |
2411 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2412 | ||
2413 | void security_xfrm_state_free(struct xfrm_state *x) | |
2414 | { | |
f25fce3e | 2415 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2416 | } |
2417 | ||
03e1ad7b | 2418 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
20510f2f | 2419 | { |
f25fce3e | 2420 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
20510f2f JM |
2421 | } |
2422 | ||
2423 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 | 2424 | struct xfrm_policy *xp, |
3df98d79 | 2425 | const struct flowi_common *flic) |
20510f2f | 2426 | { |
b1d9e6b0 | 2427 | struct security_hook_list *hp; |
98e828a0 | 2428 | int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match); |
b1d9e6b0 CS |
2429 | |
2430 | /* | |
2431 | * Since this function is expected to return 0 or 1, the judgment | |
2432 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2433 | * we can use the first LSM's judgment because currently only SELinux | |
2434 | * supplies this call. | |
2435 | * | |
2436 | * For speed optimization, we explicitly break the loop rather than | |
2437 | * using the macro | |
2438 | */ | |
df0ce173 | 2439 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 | 2440 | list) { |
3df98d79 | 2441 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic); |
b1d9e6b0 CS |
2442 | break; |
2443 | } | |
2444 | return rc; | |
20510f2f JM |
2445 | } |
2446 | ||
2447 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2448 | { | |
f25fce3e | 2449 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2450 | } |
2451 | ||
3df98d79 | 2452 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic) |
20510f2f | 2453 | { |
3df98d79 | 2454 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid, |
f25fce3e | 2455 | 0); |
20510f2f JM |
2456 | |
2457 | BUG_ON(rc); | |
2458 | } | |
2459 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2460 | ||
2461 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2462 | ||
2463 | #ifdef CONFIG_KEYS | |
2464 | ||
d84f4f99 DH |
2465 | int security_key_alloc(struct key *key, const struct cred *cred, |
2466 | unsigned long flags) | |
20510f2f | 2467 | { |
f25fce3e | 2468 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2469 | } |
2470 | ||
2471 | void security_key_free(struct key *key) | |
2472 | { | |
f25fce3e | 2473 | call_void_hook(key_free, key); |
20510f2f JM |
2474 | } |
2475 | ||
8c0637e9 DH |
2476 | int security_key_permission(key_ref_t key_ref, const struct cred *cred, |
2477 | enum key_need_perm need_perm) | |
20510f2f | 2478 | { |
8c0637e9 | 2479 | return call_int_hook(key_permission, 0, key_ref, cred, need_perm); |
20510f2f JM |
2480 | } |
2481 | ||
70a5bb72 DH |
2482 | int security_key_getsecurity(struct key *key, char **_buffer) |
2483 | { | |
b1d9e6b0 | 2484 | *_buffer = NULL; |
f25fce3e | 2485 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2486 | } |
2487 | ||
20510f2f | 2488 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2489 | |
2490 | #ifdef CONFIG_AUDIT | |
2491 | ||
2492 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2493 | { | |
f25fce3e | 2494 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
03d37d25 AD |
2495 | } |
2496 | ||
2497 | int security_audit_rule_known(struct audit_krule *krule) | |
2498 | { | |
f25fce3e | 2499 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2500 | } |
2501 | ||
2502 | void security_audit_rule_free(void *lsmrule) | |
2503 | { | |
f25fce3e | 2504 | call_void_hook(audit_rule_free, lsmrule); |
03d37d25 AD |
2505 | } |
2506 | ||
90462a5b | 2507 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule) |
03d37d25 | 2508 | { |
90462a5b | 2509 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule); |
03d37d25 | 2510 | } |
b1d9e6b0 | 2511 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2512 | |
2513 | #ifdef CONFIG_BPF_SYSCALL | |
2514 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2515 | { | |
2516 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2517 | } | |
2518 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2519 | { | |
2520 | return call_int_hook(bpf_map, 0, map, fmode); | |
2521 | } | |
2522 | int security_bpf_prog(struct bpf_prog *prog) | |
2523 | { | |
2524 | return call_int_hook(bpf_prog, 0, prog); | |
2525 | } | |
2526 | int security_bpf_map_alloc(struct bpf_map *map) | |
2527 | { | |
2528 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2529 | } | |
2530 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2531 | { | |
2532 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2533 | } | |
2534 | void security_bpf_map_free(struct bpf_map *map) | |
2535 | { | |
2536 | call_void_hook(bpf_map_free_security, map); | |
2537 | } | |
2538 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2539 | { | |
2540 | call_void_hook(bpf_prog_free_security, aux); | |
2541 | } | |
2542 | #endif /* CONFIG_BPF_SYSCALL */ | |
9e47d31d MG |
2543 | |
2544 | int security_locked_down(enum lockdown_reason what) | |
2545 | { | |
2546 | return call_int_hook(locked_down, 0, what); | |
2547 | } | |
2548 | EXPORT_SYMBOL(security_locked_down); | |
da97e184 JFG |
2549 | |
2550 | #ifdef CONFIG_PERF_EVENTS | |
2551 | int security_perf_event_open(struct perf_event_attr *attr, int type) | |
2552 | { | |
2553 | return call_int_hook(perf_event_open, 0, attr, type); | |
2554 | } | |
2555 | ||
2556 | int security_perf_event_alloc(struct perf_event *event) | |
2557 | { | |
2558 | return call_int_hook(perf_event_alloc, 0, event); | |
2559 | } | |
2560 | ||
2561 | void security_perf_event_free(struct perf_event *event) | |
2562 | { | |
2563 | call_void_hook(perf_event_free, event); | |
2564 | } | |
2565 | ||
2566 | int security_perf_event_read(struct perf_event *event) | |
2567 | { | |
2568 | return call_int_hook(perf_event_read, 0, event); | |
2569 | } | |
2570 | ||
2571 | int security_perf_event_write(struct perf_event *event) | |
2572 | { | |
2573 | return call_int_hook(perf_event_write, 0, event); | |
2574 | } | |
2575 | #endif /* CONFIG_PERF_EVENTS */ |