]>
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", | |
68 | [LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality", | |
69 | }; | |
70 | ||
3dfc9b02 | 71 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
42df744c | 72 | static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain); |
8f408ab6 | 73 | |
33bf60ca | 74 | static struct kmem_cache *lsm_file_cache; |
afb1cbe3 | 75 | static struct kmem_cache *lsm_inode_cache; |
33bf60ca | 76 | |
d69dece5 | 77 | char *lsm_names; |
bbd3662a CS |
78 | static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init; |
79 | ||
076c54c5 | 80 | /* Boot-time LSM user choice */ |
79f7865d | 81 | static __initdata const char *chosen_lsm_order; |
5ef4e419 | 82 | static __initdata const char *chosen_major_lsm; |
1da177e4 | 83 | |
13e735c0 KC |
84 | static __initconst const char * const builtin_lsm_order = CONFIG_LSM; |
85 | ||
2d4d5119 KC |
86 | /* Ordered list of LSMs to initialize. */ |
87 | static __initdata struct lsm_info **ordered_lsms; | |
14bd99c8 | 88 | static __initdata struct lsm_info *exclusive; |
2d4d5119 | 89 | |
9b8c7c14 KC |
90 | static __initdata bool debug; |
91 | #define init_debug(...) \ | |
92 | do { \ | |
93 | if (debug) \ | |
94 | pr_info(__VA_ARGS__); \ | |
95 | } while (0) | |
96 | ||
f4941d75 KC |
97 | static bool __init is_enabled(struct lsm_info *lsm) |
98 | { | |
a8027fb0 KC |
99 | if (!lsm->enabled) |
100 | return false; | |
f4941d75 | 101 | |
a8027fb0 | 102 | return *lsm->enabled; |
f4941d75 KC |
103 | } |
104 | ||
105 | /* Mark an LSM's enabled flag. */ | |
106 | static int lsm_enabled_true __initdata = 1; | |
107 | static int lsm_enabled_false __initdata = 0; | |
108 | static void __init set_enabled(struct lsm_info *lsm, bool enabled) | |
109 | { | |
110 | /* | |
111 | * When an LSM hasn't configured an enable variable, we can use | |
112 | * a hard-coded location for storing the default enabled state. | |
113 | */ | |
114 | if (!lsm->enabled) { | |
115 | if (enabled) | |
116 | lsm->enabled = &lsm_enabled_true; | |
117 | else | |
118 | lsm->enabled = &lsm_enabled_false; | |
119 | } else if (lsm->enabled == &lsm_enabled_true) { | |
120 | if (!enabled) | |
121 | lsm->enabled = &lsm_enabled_false; | |
122 | } else if (lsm->enabled == &lsm_enabled_false) { | |
123 | if (enabled) | |
124 | lsm->enabled = &lsm_enabled_true; | |
125 | } else { | |
126 | *lsm->enabled = enabled; | |
127 | } | |
128 | } | |
129 | ||
2d4d5119 KC |
130 | /* Is an LSM already listed in the ordered LSMs list? */ |
131 | static bool __init exists_ordered_lsm(struct lsm_info *lsm) | |
132 | { | |
133 | struct lsm_info **check; | |
134 | ||
135 | for (check = ordered_lsms; *check; check++) | |
136 | if (*check == lsm) | |
137 | return true; | |
138 | ||
139 | return false; | |
140 | } | |
141 | ||
142 | /* Append an LSM to the list of ordered LSMs to initialize. */ | |
143 | static int last_lsm __initdata; | |
144 | static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from) | |
145 | { | |
146 | /* Ignore duplicate selections. */ | |
147 | if (exists_ordered_lsm(lsm)) | |
148 | return; | |
149 | ||
150 | if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from)) | |
151 | return; | |
152 | ||
a8027fb0 KC |
153 | /* Enable this LSM, if it is not already set. */ |
154 | if (!lsm->enabled) | |
155 | lsm->enabled = &lsm_enabled_true; | |
2d4d5119 | 156 | ordered_lsms[last_lsm++] = lsm; |
a8027fb0 | 157 | |
2d4d5119 KC |
158 | init_debug("%s ordering: %s (%sabled)\n", from, lsm->name, |
159 | is_enabled(lsm) ? "en" : "dis"); | |
160 | } | |
161 | ||
f4941d75 KC |
162 | /* Is an LSM allowed to be initialized? */ |
163 | static bool __init lsm_allowed(struct lsm_info *lsm) | |
164 | { | |
165 | /* Skip if the LSM is disabled. */ | |
166 | if (!is_enabled(lsm)) | |
167 | return false; | |
168 | ||
14bd99c8 KC |
169 | /* Not allowed if another exclusive LSM already initialized. */ |
170 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) { | |
171 | init_debug("exclusive disabled: %s\n", lsm->name); | |
172 | return false; | |
173 | } | |
174 | ||
f4941d75 KC |
175 | return true; |
176 | } | |
177 | ||
bbd3662a CS |
178 | static void __init lsm_set_blob_size(int *need, int *lbs) |
179 | { | |
180 | int offset; | |
181 | ||
182 | if (*need > 0) { | |
183 | offset = *lbs; | |
184 | *lbs += *need; | |
185 | *need = offset; | |
186 | } | |
187 | } | |
188 | ||
189 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
190 | { | |
191 | if (!needed) | |
192 | return; | |
193 | ||
194 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 195 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
196 | /* |
197 | * The inode blob gets an rcu_head in addition to | |
198 | * what the modules might need. | |
199 | */ | |
200 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
201 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
202 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
203 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
204 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
f4ad8f2c | 205 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
206 | } |
207 | ||
d8e9bbd4 KC |
208 | /* Prepare LSM for initialization. */ |
209 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
210 | { |
211 | int enabled = lsm_allowed(lsm); | |
212 | ||
213 | /* Record enablement (to handle any following exclusive LSMs). */ | |
214 | set_enabled(lsm, enabled); | |
215 | ||
d8e9bbd4 | 216 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 217 | if (enabled) { |
14bd99c8 KC |
218 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
219 | exclusive = lsm; | |
220 | init_debug("exclusive chosen: %s\n", lsm->name); | |
221 | } | |
bbd3662a CS |
222 | |
223 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
224 | } |
225 | } | |
226 | ||
227 | /* Initialize a given LSM, if it is enabled. */ | |
228 | static void __init initialize_lsm(struct lsm_info *lsm) | |
229 | { | |
230 | if (is_enabled(lsm)) { | |
231 | int ret; | |
14bd99c8 | 232 | |
f4941d75 KC |
233 | init_debug("initializing %s\n", lsm->name); |
234 | ret = lsm->init(); | |
235 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
236 | } | |
237 | } | |
238 | ||
13e735c0 | 239 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 240 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
241 | { |
242 | struct lsm_info *lsm; | |
13e735c0 KC |
243 | char *sep, *name, *next; |
244 | ||
e2bc445b KC |
245 | /* LSM_ORDER_FIRST is always first. */ |
246 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
247 | if (lsm->order == LSM_ORDER_FIRST) | |
248 | append_ordered_lsm(lsm, "first"); | |
249 | } | |
250 | ||
7e611486 | 251 | /* Process "security=", if given. */ |
7e611486 KC |
252 | if (chosen_major_lsm) { |
253 | struct lsm_info *major; | |
254 | ||
255 | /* | |
256 | * To match the original "security=" behavior, this | |
257 | * explicitly does NOT fallback to another Legacy Major | |
258 | * if the selected one was separately disabled: disable | |
259 | * all non-matching Legacy Major LSMs. | |
260 | */ | |
261 | for (major = __start_lsm_info; major < __end_lsm_info; | |
262 | major++) { | |
263 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
264 | strcmp(major->name, chosen_major_lsm) != 0) { | |
265 | set_enabled(major, false); | |
266 | init_debug("security=%s disabled: %s\n", | |
267 | chosen_major_lsm, major->name); | |
268 | } | |
269 | } | |
270 | } | |
5ef4e419 | 271 | |
13e735c0 KC |
272 | sep = kstrdup(order, GFP_KERNEL); |
273 | next = sep; | |
274 | /* Walk the list, looking for matching LSMs. */ | |
275 | while ((name = strsep(&next, ",")) != NULL) { | |
276 | bool found = false; | |
277 | ||
278 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
279 | if (lsm->order == LSM_ORDER_MUTABLE && |
280 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
281 | append_ordered_lsm(lsm, origin); |
282 | found = true; | |
283 | } | |
284 | } | |
285 | ||
286 | if (!found) | |
287 | init_debug("%s ignored: %s\n", origin, name); | |
657d910b | 288 | } |
c91d8106 CS |
289 | |
290 | /* Process "security=", if given. */ | |
291 | if (chosen_major_lsm) { | |
292 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
293 | if (exists_ordered_lsm(lsm)) | |
294 | continue; | |
295 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
296 | append_ordered_lsm(lsm, "security="); | |
297 | } | |
298 | } | |
299 | ||
300 | /* Disable all LSMs not in the ordered list. */ | |
301 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
302 | if (exists_ordered_lsm(lsm)) | |
303 | continue; | |
304 | set_enabled(lsm, false); | |
305 | init_debug("%s disabled: %s\n", origin, lsm->name); | |
306 | } | |
307 | ||
13e735c0 | 308 | kfree(sep); |
657d910b KC |
309 | } |
310 | ||
1cfb2a51 TH |
311 | static void __init lsm_early_cred(struct cred *cred); |
312 | static void __init lsm_early_task(struct task_struct *task); | |
313 | ||
e6b1db98 MG |
314 | static int lsm_append(const char *new, char **result); |
315 | ||
2d4d5119 KC |
316 | static void __init ordered_lsm_init(void) |
317 | { | |
318 | struct lsm_info **lsm; | |
319 | ||
320 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
321 | GFP_KERNEL); | |
322 | ||
89a9684e KC |
323 | if (chosen_lsm_order) { |
324 | if (chosen_major_lsm) { | |
325 | pr_info("security= is ignored because it is superseded by lsm=\n"); | |
326 | chosen_major_lsm = NULL; | |
327 | } | |
79f7865d | 328 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 329 | } else |
79f7865d | 330 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
331 | |
332 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
333 | prepare_lsm(*lsm); |
334 | ||
bbd3662a | 335 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
33bf60ca | 336 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); |
afb1cbe3 | 337 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); |
ecd5f82e CS |
338 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); |
339 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
f4ad8f2c | 340 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); |
33bf60ca CS |
341 | |
342 | /* | |
343 | * Create any kmem_caches needed for blobs | |
344 | */ | |
345 | if (blob_sizes.lbs_file) | |
346 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
347 | blob_sizes.lbs_file, 0, | |
348 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
349 | if (blob_sizes.lbs_inode) |
350 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
351 | blob_sizes.lbs_inode, 0, | |
352 | SLAB_PANIC, NULL); | |
bbd3662a | 353 | |
1cfb2a51 TH |
354 | lsm_early_cred((struct cred *) current->cred); |
355 | lsm_early_task(current); | |
d8e9bbd4 KC |
356 | for (lsm = ordered_lsms; *lsm; lsm++) |
357 | initialize_lsm(*lsm); | |
2d4d5119 KC |
358 | |
359 | kfree(ordered_lsms); | |
360 | } | |
361 | ||
e6b1db98 MG |
362 | int __init early_security_init(void) |
363 | { | |
364 | int i; | |
365 | struct hlist_head *list = (struct hlist_head *) &security_hook_heads; | |
366 | struct lsm_info *lsm; | |
367 | ||
368 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head); | |
369 | i++) | |
370 | INIT_HLIST_HEAD(&list[i]); | |
371 | ||
372 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
373 | if (!lsm->enabled) | |
374 | lsm->enabled = &lsm_enabled_true; | |
375 | prepare_lsm(lsm); | |
376 | initialize_lsm(lsm); | |
377 | } | |
378 | ||
379 | return 0; | |
380 | } | |
381 | ||
1da177e4 LT |
382 | /** |
383 | * security_init - initializes the security framework | |
384 | * | |
385 | * This should be called early in the kernel initialization sequence. | |
386 | */ | |
387 | int __init security_init(void) | |
388 | { | |
e6b1db98 | 389 | struct lsm_info *lsm; |
3dfc9b02 | 390 | |
98d29170 KC |
391 | pr_info("Security Framework initializing\n"); |
392 | ||
e6b1db98 MG |
393 | /* |
394 | * Append the names of the early LSM modules now that kmalloc() is | |
395 | * available | |
396 | */ | |
397 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
398 | if (lsm->enabled) | |
399 | lsm_append(lsm->name, &lsm_names); | |
400 | } | |
1da177e4 | 401 | |
657d910b KC |
402 | /* Load LSMs in specified order. */ |
403 | ordered_lsm_init(); | |
404 | ||
1da177e4 LT |
405 | return 0; |
406 | } | |
407 | ||
076c54c5 | 408 | /* Save user chosen LSM */ |
5ef4e419 | 409 | static int __init choose_major_lsm(char *str) |
076c54c5 | 410 | { |
5ef4e419 | 411 | chosen_major_lsm = str; |
076c54c5 AD |
412 | return 1; |
413 | } | |
5ef4e419 | 414 | __setup("security=", choose_major_lsm); |
076c54c5 | 415 | |
79f7865d KC |
416 | /* Explicitly choose LSM initialization order. */ |
417 | static int __init choose_lsm_order(char *str) | |
418 | { | |
419 | chosen_lsm_order = str; | |
420 | return 1; | |
421 | } | |
422 | __setup("lsm=", choose_lsm_order); | |
423 | ||
9b8c7c14 KC |
424 | /* Enable LSM order debugging. */ |
425 | static int __init enable_debug(char *str) | |
426 | { | |
427 | debug = true; | |
428 | return 1; | |
429 | } | |
430 | __setup("lsm.debug", enable_debug); | |
431 | ||
3bb857e4 MS |
432 | static bool match_last_lsm(const char *list, const char *lsm) |
433 | { | |
434 | const char *last; | |
435 | ||
436 | if (WARN_ON(!list || !lsm)) | |
437 | return false; | |
438 | last = strrchr(list, ','); | |
439 | if (last) | |
440 | /* Pass the comma, strcmp() will check for '\0' */ | |
441 | last++; | |
442 | else | |
443 | last = list; | |
444 | return !strcmp(last, lsm); | |
445 | } | |
446 | ||
e6b1db98 | 447 | static int lsm_append(const char *new, char **result) |
d69dece5 CS |
448 | { |
449 | char *cp; | |
450 | ||
451 | if (*result == NULL) { | |
452 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
453 | if (*result == NULL) |
454 | return -ENOMEM; | |
d69dece5 | 455 | } else { |
3bb857e4 MS |
456 | /* Check if it is the last registered name */ |
457 | if (match_last_lsm(*result, new)) | |
458 | return 0; | |
d69dece5 CS |
459 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
460 | if (cp == NULL) | |
461 | return -ENOMEM; | |
462 | kfree(*result); | |
463 | *result = cp; | |
464 | } | |
465 | return 0; | |
466 | } | |
467 | ||
d69dece5 CS |
468 | /** |
469 | * security_add_hooks - Add a modules hooks to the hook lists. | |
470 | * @hooks: the hooks to add | |
471 | * @count: the number of hooks to add | |
472 | * @lsm: the name of the security module | |
473 | * | |
474 | * Each LSM has to register its hooks with the infrastructure. | |
475 | */ | |
476 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
477 | char *lsm) | |
478 | { | |
479 | int i; | |
480 | ||
481 | for (i = 0; i < count; i++) { | |
482 | hooks[i].lsm = lsm; | |
df0ce173 | 483 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
d69dece5 | 484 | } |
e6b1db98 MG |
485 | |
486 | /* | |
487 | * Don't try to append during early_security_init(), we'll come back | |
488 | * and fix this up afterwards. | |
489 | */ | |
490 | if (slab_is_available()) { | |
491 | if (lsm_append(lsm, &lsm_names) < 0) | |
492 | panic("%s - Cannot get early memory.\n", __func__); | |
493 | } | |
d69dece5 CS |
494 | } |
495 | ||
42df744c | 496 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 497 | { |
42df744c JK |
498 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
499 | event, data); | |
8f408ab6 | 500 | } |
42df744c | 501 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 502 | |
42df744c | 503 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 504 | { |
42df744c JK |
505 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
506 | nb); | |
8f408ab6 | 507 | } |
42df744c | 508 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 509 | |
42df744c | 510 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 511 | { |
42df744c JK |
512 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
513 | nb); | |
8f408ab6 | 514 | } |
42df744c | 515 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 516 | |
bbd3662a CS |
517 | /** |
518 | * lsm_cred_alloc - allocate a composite cred blob | |
519 | * @cred: the cred that needs a blob | |
520 | * @gfp: allocation type | |
521 | * | |
522 | * Allocate the cred blob for all the modules | |
523 | * | |
524 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
525 | */ | |
526 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
527 | { | |
528 | if (blob_sizes.lbs_cred == 0) { | |
529 | cred->security = NULL; | |
530 | return 0; | |
531 | } | |
532 | ||
533 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
534 | if (cred->security == NULL) | |
535 | return -ENOMEM; | |
536 | return 0; | |
537 | } | |
538 | ||
539 | /** | |
540 | * lsm_early_cred - during initialization allocate a composite cred blob | |
541 | * @cred: the cred that needs a blob | |
542 | * | |
1cfb2a51 | 543 | * Allocate the cred blob for all the modules |
bbd3662a | 544 | */ |
1cfb2a51 | 545 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 546 | { |
1cfb2a51 | 547 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 548 | |
bbd3662a CS |
549 | if (rc) |
550 | panic("%s: Early cred alloc failed.\n", __func__); | |
551 | } | |
552 | ||
33bf60ca CS |
553 | /** |
554 | * lsm_file_alloc - allocate a composite file blob | |
555 | * @file: the file that needs a blob | |
556 | * | |
557 | * Allocate the file blob for all the modules | |
558 | * | |
559 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
560 | */ | |
561 | static int lsm_file_alloc(struct file *file) | |
562 | { | |
563 | if (!lsm_file_cache) { | |
564 | file->f_security = NULL; | |
565 | return 0; | |
566 | } | |
567 | ||
568 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
569 | if (file->f_security == NULL) | |
570 | return -ENOMEM; | |
571 | return 0; | |
572 | } | |
573 | ||
afb1cbe3 CS |
574 | /** |
575 | * lsm_inode_alloc - allocate a composite inode blob | |
576 | * @inode: the inode that needs a blob | |
577 | * | |
578 | * Allocate the inode blob for all the modules | |
579 | * | |
580 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
581 | */ | |
582 | int lsm_inode_alloc(struct inode *inode) | |
583 | { | |
584 | if (!lsm_inode_cache) { | |
585 | inode->i_security = NULL; | |
586 | return 0; | |
587 | } | |
588 | ||
589 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
590 | if (inode->i_security == NULL) | |
591 | return -ENOMEM; | |
592 | return 0; | |
593 | } | |
594 | ||
f4ad8f2c CS |
595 | /** |
596 | * lsm_task_alloc - allocate a composite task blob | |
597 | * @task: the task that needs a blob | |
598 | * | |
599 | * Allocate the task blob for all the modules | |
600 | * | |
601 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
602 | */ | |
3e8c7367 | 603 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c CS |
604 | { |
605 | if (blob_sizes.lbs_task == 0) { | |
606 | task->security = NULL; | |
607 | return 0; | |
608 | } | |
609 | ||
610 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
611 | if (task->security == NULL) | |
612 | return -ENOMEM; | |
613 | return 0; | |
614 | } | |
615 | ||
ecd5f82e CS |
616 | /** |
617 | * lsm_ipc_alloc - allocate a composite ipc blob | |
618 | * @kip: the ipc that needs a blob | |
619 | * | |
620 | * Allocate the ipc blob for all the modules | |
621 | * | |
622 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
623 | */ | |
3e8c7367 | 624 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
625 | { |
626 | if (blob_sizes.lbs_ipc == 0) { | |
627 | kip->security = NULL; | |
628 | return 0; | |
629 | } | |
630 | ||
631 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
632 | if (kip->security == NULL) | |
633 | return -ENOMEM; | |
634 | return 0; | |
635 | } | |
636 | ||
637 | /** | |
638 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
639 | * @mp: the msg_msg that needs a blob | |
640 | * | |
641 | * Allocate the ipc blob for all the modules | |
642 | * | |
643 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
644 | */ | |
3e8c7367 | 645 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
646 | { |
647 | if (blob_sizes.lbs_msg_msg == 0) { | |
648 | mp->security = NULL; | |
649 | return 0; | |
650 | } | |
651 | ||
652 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
653 | if (mp->security == NULL) | |
654 | return -ENOMEM; | |
655 | return 0; | |
656 | } | |
657 | ||
f4ad8f2c CS |
658 | /** |
659 | * lsm_early_task - during initialization allocate a composite task blob | |
660 | * @task: the task that needs a blob | |
661 | * | |
1cfb2a51 | 662 | * Allocate the task blob for all the modules |
f4ad8f2c | 663 | */ |
1cfb2a51 | 664 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 665 | { |
1cfb2a51 | 666 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 667 | |
f4ad8f2c CS |
668 | if (rc) |
669 | panic("%s: Early task alloc failed.\n", __func__); | |
670 | } | |
671 | ||
98e828a0 KS |
672 | /* |
673 | * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and | |
674 | * can be accessed with: | |
675 | * | |
676 | * LSM_RET_DEFAULT(<hook_name>) | |
677 | * | |
678 | * The macros below define static constants for the default value of each | |
679 | * LSM hook. | |
680 | */ | |
681 | #define LSM_RET_DEFAULT(NAME) (NAME##_default) | |
682 | #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME) | |
683 | #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \ | |
684 | static const int LSM_RET_DEFAULT(NAME) = (DEFAULT); | |
685 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ | |
686 | DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME) | |
687 | ||
688 | #include <linux/lsm_hook_defs.h> | |
689 | #undef LSM_HOOK | |
690 | ||
f25fce3e | 691 | /* |
b1d9e6b0 | 692 | * Hook list operation macros. |
1da177e4 | 693 | * |
f25fce3e CS |
694 | * call_void_hook: |
695 | * This is a hook that does not return a value. | |
1da177e4 | 696 | * |
f25fce3e CS |
697 | * call_int_hook: |
698 | * This is a hook that returns a value. | |
1da177e4 | 699 | */ |
1da177e4 | 700 | |
b1d9e6b0 CS |
701 | #define call_void_hook(FUNC, ...) \ |
702 | do { \ | |
703 | struct security_hook_list *P; \ | |
704 | \ | |
df0ce173 | 705 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
706 | P->hook.FUNC(__VA_ARGS__); \ |
707 | } while (0) | |
708 | ||
709 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
710 | int RC = IRC; \ | |
711 | do { \ | |
712 | struct security_hook_list *P; \ | |
713 | \ | |
df0ce173 | 714 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
715 | RC = P->hook.FUNC(__VA_ARGS__); \ |
716 | if (RC != 0) \ | |
717 | break; \ | |
718 | } \ | |
719 | } while (0); \ | |
720 | RC; \ | |
721 | }) | |
1da177e4 | 722 | |
20510f2f JM |
723 | /* Security operations */ |
724 | ||
79af7307 SS |
725 | int security_binder_set_context_mgr(struct task_struct *mgr) |
726 | { | |
f25fce3e | 727 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 SS |
728 | } |
729 | ||
730 | int security_binder_transaction(struct task_struct *from, | |
731 | struct task_struct *to) | |
732 | { | |
f25fce3e | 733 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 SS |
734 | } |
735 | ||
736 | int security_binder_transfer_binder(struct task_struct *from, | |
737 | struct task_struct *to) | |
738 | { | |
f25fce3e | 739 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 SS |
740 | } |
741 | ||
742 | int security_binder_transfer_file(struct task_struct *from, | |
743 | struct task_struct *to, struct file *file) | |
744 | { | |
f25fce3e | 745 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 SS |
746 | } |
747 | ||
9e48858f | 748 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 749 | { |
f25fce3e | 750 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
751 | } |
752 | ||
753 | int security_ptrace_traceme(struct task_struct *parent) | |
754 | { | |
f25fce3e | 755 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
756 | } |
757 | ||
758 | int security_capget(struct task_struct *target, | |
759 | kernel_cap_t *effective, | |
760 | kernel_cap_t *inheritable, | |
761 | kernel_cap_t *permitted) | |
762 | { | |
f25fce3e CS |
763 | return call_int_hook(capget, 0, target, |
764 | effective, inheritable, permitted); | |
20510f2f JM |
765 | } |
766 | ||
d84f4f99 DH |
767 | int security_capset(struct cred *new, const struct cred *old, |
768 | const kernel_cap_t *effective, | |
769 | const kernel_cap_t *inheritable, | |
770 | const kernel_cap_t *permitted) | |
20510f2f | 771 | { |
f25fce3e CS |
772 | return call_int_hook(capset, 0, new, old, |
773 | effective, inheritable, permitted); | |
20510f2f JM |
774 | } |
775 | ||
c1a85a00 MM |
776 | int security_capable(const struct cred *cred, |
777 | struct user_namespace *ns, | |
778 | int cap, | |
779 | unsigned int opts) | |
20510f2f | 780 | { |
c1a85a00 | 781 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
782 | } |
783 | ||
20510f2f JM |
784 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
785 | { | |
f25fce3e | 786 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
787 | } |
788 | ||
789 | int security_quota_on(struct dentry *dentry) | |
790 | { | |
f25fce3e | 791 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
792 | } |
793 | ||
12b3052c | 794 | int security_syslog(int type) |
20510f2f | 795 | { |
f25fce3e | 796 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
797 | } |
798 | ||
457db29b | 799 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 800 | { |
f25fce3e | 801 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
802 | } |
803 | ||
20510f2f JM |
804 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
805 | { | |
b1d9e6b0 CS |
806 | struct security_hook_list *hp; |
807 | int cap_sys_admin = 1; | |
808 | int rc; | |
809 | ||
810 | /* | |
811 | * The module will respond with a positive value if | |
812 | * it thinks the __vm_enough_memory() call should be | |
813 | * made with the cap_sys_admin set. If all of the modules | |
814 | * agree that it should be set it will. If any module | |
815 | * thinks it should not be set it won't. | |
816 | */ | |
df0ce173 | 817 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
818 | rc = hp->hook.vm_enough_memory(mm, pages); |
819 | if (rc <= 0) { | |
820 | cap_sys_admin = 0; | |
821 | break; | |
822 | } | |
823 | } | |
824 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
825 | } |
826 | ||
b8bff599 | 827 | int security_bprm_creds_for_exec(struct linux_binprm *bprm) |
20510f2f | 828 | { |
b8bff599 EB |
829 | return call_int_hook(bprm_creds_for_exec, 0, bprm); |
830 | } | |
831 | ||
56305aa9 | 832 | int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file) |
20510f2f | 833 | { |
56305aa9 | 834 | return call_int_hook(bprm_creds_from_file, 0, bprm, file); |
20510f2f JM |
835 | } |
836 | ||
a6f76f23 | 837 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 838 | { |
6c21a7fb MZ |
839 | int ret; |
840 | ||
f25fce3e | 841 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
842 | if (ret) |
843 | return ret; | |
844 | return ima_bprm_check(bprm); | |
20510f2f JM |
845 | } |
846 | ||
a6f76f23 | 847 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 848 | { |
f25fce3e | 849 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
850 | } |
851 | ||
a6f76f23 | 852 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 853 | { |
f25fce3e | 854 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
855 | } |
856 | ||
0b52075e AV |
857 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
858 | { | |
859 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
860 | } | |
861 | ||
da2441fd DH |
862 | int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param) |
863 | { | |
864 | return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param); | |
865 | } | |
866 | ||
20510f2f JM |
867 | int security_sb_alloc(struct super_block *sb) |
868 | { | |
f25fce3e | 869 | return call_int_hook(sb_alloc_security, 0, sb); |
20510f2f JM |
870 | } |
871 | ||
872 | void security_sb_free(struct super_block *sb) | |
873 | { | |
f25fce3e | 874 | call_void_hook(sb_free_security, sb); |
20510f2f JM |
875 | } |
876 | ||
204cc0cc | 877 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 878 | { |
204cc0cc AV |
879 | if (!*mnt_opts) |
880 | return; | |
881 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
882 | *mnt_opts = NULL; | |
20510f2f | 883 | } |
204cc0cc | 884 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 885 | |
204cc0cc | 886 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 887 | { |
204cc0cc | 888 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 889 | } |
f5c0c26d | 890 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 891 | |
c039bc3c | 892 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 893 | void *mnt_opts) |
20510f2f | 894 | { |
204cc0cc | 895 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 896 | } |
a65001e8 | 897 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 898 | |
a10d7c22 | 899 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 900 | { |
a10d7c22 | 901 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
902 | } |
903 | ||
2069f457 EP |
904 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
905 | { | |
f25fce3e | 906 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
907 | } |
908 | ||
20510f2f JM |
909 | int security_sb_statfs(struct dentry *dentry) |
910 | { | |
f25fce3e | 911 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
912 | } |
913 | ||
8a04c43b | 914 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 915 | const char *type, unsigned long flags, void *data) |
20510f2f | 916 | { |
f25fce3e | 917 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
918 | } |
919 | ||
20510f2f JM |
920 | int security_sb_umount(struct vfsmount *mnt, int flags) |
921 | { | |
f25fce3e | 922 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
923 | } |
924 | ||
3b73b68c | 925 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 926 | { |
f25fce3e | 927 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
928 | } |
929 | ||
c9180a57 | 930 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 931 | void *mnt_opts, |
649f6e77 DQ |
932 | unsigned long kern_flags, |
933 | unsigned long *set_kern_flags) | |
c9180a57 | 934 | { |
b1d9e6b0 | 935 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
936 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
937 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 938 | } |
e0007529 | 939 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 940 | |
094f7b69 | 941 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
942 | struct super_block *newsb, |
943 | unsigned long kern_flags, | |
944 | unsigned long *set_kern_flags) | |
c9180a57 | 945 | { |
0b4d3452 SM |
946 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
947 | kern_flags, set_kern_flags); | |
c9180a57 | 948 | } |
e0007529 EP |
949 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
950 | ||
757cbe59 AV |
951 | int security_add_mnt_opt(const char *option, const char *val, int len, |
952 | void **mnt_opts) | |
e0007529 | 953 | { |
757cbe59 AV |
954 | return call_int_hook(sb_add_mnt_opt, -EINVAL, |
955 | option, val, len, mnt_opts); | |
e0007529 | 956 | } |
757cbe59 | 957 | EXPORT_SYMBOL(security_add_mnt_opt); |
c9180a57 | 958 | |
2db154b3 DH |
959 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
960 | { | |
961 | return call_int_hook(move_mount, 0, from_path, to_path); | |
962 | } | |
963 | ||
ac5656d8 AG |
964 | int security_path_notify(const struct path *path, u64 mask, |
965 | unsigned int obj_type) | |
966 | { | |
967 | return call_int_hook(path_notify, 0, path, mask, obj_type); | |
968 | } | |
969 | ||
20510f2f JM |
970 | int security_inode_alloc(struct inode *inode) |
971 | { | |
afb1cbe3 CS |
972 | int rc = lsm_inode_alloc(inode); |
973 | ||
974 | if (unlikely(rc)) | |
975 | return rc; | |
976 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
977 | if (unlikely(rc)) | |
978 | security_inode_free(inode); | |
979 | return rc; | |
980 | } | |
981 | ||
982 | static void inode_free_by_rcu(struct rcu_head *head) | |
983 | { | |
984 | /* | |
985 | * The rcu head is at the start of the inode blob | |
986 | */ | |
987 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
988 | } |
989 | ||
990 | void security_inode_free(struct inode *inode) | |
991 | { | |
f381c272 | 992 | integrity_inode_free(inode); |
f25fce3e | 993 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
994 | /* |
995 | * The inode may still be referenced in a path walk and | |
996 | * a call to security_inode_permission() can be made | |
997 | * after inode_free_security() is called. Ideally, the VFS | |
998 | * wouldn't do this, but fixing that is a much harder | |
999 | * job. For now, simply free the i_security via RCU, and | |
1000 | * leave the current inode->i_security pointer intact. | |
1001 | * The inode will be freed after the RCU grace period too. | |
1002 | */ | |
1003 | if (inode->i_security) | |
1004 | call_rcu((struct rcu_head *)inode->i_security, | |
1005 | inode_free_by_rcu); | |
20510f2f JM |
1006 | } |
1007 | ||
d47be3df | 1008 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 1009 | const struct qstr *name, void **ctx, |
d47be3df DQ |
1010 | u32 *ctxlen) |
1011 | { | |
b1d9e6b0 CS |
1012 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
1013 | name, ctx, ctxlen); | |
d47be3df DQ |
1014 | } |
1015 | EXPORT_SYMBOL(security_dentry_init_security); | |
1016 | ||
2602625b VG |
1017 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
1018 | struct qstr *name, | |
1019 | const struct cred *old, struct cred *new) | |
1020 | { | |
1021 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
1022 | name, old, new); | |
1023 | } | |
1024 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
1025 | ||
20510f2f | 1026 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
1027 | const struct qstr *qstr, |
1028 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 1029 | { |
823eb1cc MZ |
1030 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
1031 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
1032 | int ret; |
1033 | ||
20510f2f | 1034 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 1035 | return 0; |
9d8f13ba | 1036 | |
9d8f13ba | 1037 | if (!initxattrs) |
e308fd3b JB |
1038 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
1039 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 1040 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 1041 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 1042 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
1043 | &lsm_xattr->name, |
1044 | &lsm_xattr->value, | |
1045 | &lsm_xattr->value_len); | |
1046 | if (ret) | |
1047 | goto out; | |
823eb1cc MZ |
1048 | |
1049 | evm_xattr = lsm_xattr + 1; | |
1050 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1051 | if (ret) | |
1052 | goto out; | |
9d8f13ba MZ |
1053 | ret = initxattrs(inode, new_xattrs, fs_data); |
1054 | out: | |
9548906b | 1055 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1056 | kfree(xattr->value); |
9d8f13ba MZ |
1057 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1058 | } | |
1059 | EXPORT_SYMBOL(security_inode_init_security); | |
1060 | ||
1061 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, | |
9548906b | 1062 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1063 | void **value, size_t *len) |
20510f2f JM |
1064 | { |
1065 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1066 | return -EOPNOTSUPP; |
e308fd3b JB |
1067 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1068 | qstr, name, value, len); | |
20510f2f | 1069 | } |
9d8f13ba | 1070 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1071 | |
be6d3e56 | 1072 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1073 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1074 | unsigned int dev) |
1075 | { | |
c6f493d6 | 1076 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1077 | return 0; |
f25fce3e | 1078 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1079 | } |
1080 | EXPORT_SYMBOL(security_path_mknod); | |
1081 | ||
d3607752 | 1082 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1083 | { |
c6f493d6 | 1084 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1085 | return 0; |
f25fce3e | 1086 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1087 | } |
82140443 | 1088 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1089 | |
989f74e0 | 1090 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1091 | { |
c6f493d6 | 1092 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1093 | return 0; |
f25fce3e | 1094 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 KT |
1095 | } |
1096 | ||
989f74e0 | 1097 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1098 | { |
c6f493d6 | 1099 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1100 | return 0; |
f25fce3e | 1101 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1102 | } |
82140443 | 1103 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1104 | |
d3607752 | 1105 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1106 | const char *old_name) |
1107 | { | |
c6f493d6 | 1108 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1109 | return 0; |
f25fce3e | 1110 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 KT |
1111 | } |
1112 | ||
3ccee46a | 1113 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1114 | struct dentry *new_dentry) |
1115 | { | |
c6f493d6 | 1116 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1117 | return 0; |
f25fce3e | 1118 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 KT |
1119 | } |
1120 | ||
3ccee46a AV |
1121 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1122 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1123 | unsigned int flags) |
be6d3e56 | 1124 | { |
c6f493d6 DH |
1125 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1126 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1127 | return 0; |
da1ce067 MS |
1128 | |
1129 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1130 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1131 | old_dir, old_dentry); | |
da1ce067 MS |
1132 | if (err) |
1133 | return err; | |
1134 | } | |
1135 | ||
f25fce3e CS |
1136 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1137 | new_dentry); | |
be6d3e56 | 1138 | } |
82140443 | 1139 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1140 | |
81f4c506 | 1141 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1142 | { |
c6f493d6 | 1143 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1144 | return 0; |
f25fce3e | 1145 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1146 | } |
89eda068 | 1147 | |
be01f9f2 | 1148 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1149 | { |
c6f493d6 | 1150 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1151 | return 0; |
f25fce3e | 1152 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 TH |
1153 | } |
1154 | ||
7fd25dac | 1155 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1156 | { |
c6f493d6 | 1157 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1158 | return 0; |
f25fce3e | 1159 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1160 | } |
8b8efb44 | 1161 | |
77b286c0 | 1162 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1163 | { |
f25fce3e | 1164 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1165 | } |
be6d3e56 KT |
1166 | #endif |
1167 | ||
4acdaf27 | 1168 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1169 | { |
1170 | if (unlikely(IS_PRIVATE(dir))) | |
1171 | return 0; | |
f25fce3e | 1172 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1173 | } |
800a9647 | 1174 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1175 | |
1176 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1177 | struct dentry *new_dentry) | |
1178 | { | |
c6f493d6 | 1179 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1180 | return 0; |
f25fce3e | 1181 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1182 | } |
1183 | ||
1184 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1185 | { | |
c6f493d6 | 1186 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1187 | return 0; |
f25fce3e | 1188 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1189 | } |
1190 | ||
1191 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1192 | const char *old_name) | |
1193 | { | |
1194 | if (unlikely(IS_PRIVATE(dir))) | |
1195 | return 0; | |
f25fce3e | 1196 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1197 | } |
1198 | ||
18bb1db3 | 1199 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1200 | { |
1201 | if (unlikely(IS_PRIVATE(dir))) | |
1202 | return 0; | |
f25fce3e | 1203 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1204 | } |
800a9647 | 1205 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1206 | |
1207 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1208 | { | |
c6f493d6 | 1209 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1210 | return 0; |
f25fce3e | 1211 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1212 | } |
1213 | ||
1a67aafb | 1214 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1215 | { |
1216 | if (unlikely(IS_PRIVATE(dir))) | |
1217 | return 0; | |
f25fce3e | 1218 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1219 | } |
1220 | ||
1221 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1222 | struct inode *new_dir, struct dentry *new_dentry, |
1223 | unsigned int flags) | |
20510f2f | 1224 | { |
c6f493d6 DH |
1225 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1226 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1227 | return 0; |
da1ce067 MS |
1228 | |
1229 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1230 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1231 | old_dir, old_dentry); |
1232 | if (err) | |
1233 | return err; | |
1234 | } | |
1235 | ||
f25fce3e | 1236 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1237 | new_dir, new_dentry); |
1238 | } | |
1239 | ||
1240 | int security_inode_readlink(struct dentry *dentry) | |
1241 | { | |
c6f493d6 | 1242 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1243 | return 0; |
f25fce3e | 1244 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1245 | } |
1246 | ||
bda0be7a N |
1247 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1248 | bool rcu) | |
20510f2f | 1249 | { |
bda0be7a | 1250 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1251 | return 0; |
e22619a2 | 1252 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1253 | } |
1254 | ||
b77b0646 | 1255 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1256 | { |
1257 | if (unlikely(IS_PRIVATE(inode))) | |
1258 | return 0; | |
f25fce3e | 1259 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f JM |
1260 | } |
1261 | ||
1262 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1263 | { | |
817b54aa MZ |
1264 | int ret; |
1265 | ||
c6f493d6 | 1266 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1267 | return 0; |
f25fce3e | 1268 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1269 | if (ret) |
1270 | return ret; | |
1271 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1272 | } |
b1da47e2 | 1273 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1274 | |
3f7036a0 | 1275 | int security_inode_getattr(const struct path *path) |
20510f2f | 1276 | { |
c6f493d6 | 1277 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1278 | return 0; |
f25fce3e | 1279 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1280 | } |
1281 | ||
8f0cfa52 DH |
1282 | int security_inode_setxattr(struct dentry *dentry, const char *name, |
1283 | const void *value, size_t size, int flags) | |
20510f2f | 1284 | { |
3e1be52d MZ |
1285 | int ret; |
1286 | ||
c6f493d6 | 1287 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1288 | return 0; |
b1d9e6b0 CS |
1289 | /* |
1290 | * SELinux and Smack integrate the cap call, | |
1291 | * so assume that all LSMs supplying this call do so. | |
1292 | */ | |
1293 | ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, | |
f25fce3e | 1294 | flags); |
b1d9e6b0 CS |
1295 | |
1296 | if (ret == 1) | |
1297 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1298 | if (ret) |
1299 | return ret; | |
1300 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1301 | if (ret) |
1302 | return ret; | |
1303 | return evm_inode_setxattr(dentry, name, value, size); | |
20510f2f JM |
1304 | } |
1305 | ||
8f0cfa52 DH |
1306 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1307 | const void *value, size_t size, int flags) | |
20510f2f | 1308 | { |
c6f493d6 | 1309 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1310 | return; |
f25fce3e | 1311 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1312 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1313 | } |
1314 | ||
8f0cfa52 | 1315 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1316 | { |
c6f493d6 | 1317 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1318 | return 0; |
f25fce3e | 1319 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1320 | } |
1321 | ||
1322 | int security_inode_listxattr(struct dentry *dentry) | |
1323 | { | |
c6f493d6 | 1324 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1325 | return 0; |
f25fce3e | 1326 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1327 | } |
1328 | ||
8f0cfa52 | 1329 | int security_inode_removexattr(struct dentry *dentry, const char *name) |
20510f2f | 1330 | { |
3e1be52d MZ |
1331 | int ret; |
1332 | ||
c6f493d6 | 1333 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1334 | return 0; |
b1d9e6b0 CS |
1335 | /* |
1336 | * SELinux and Smack integrate the cap call, | |
1337 | * so assume that all LSMs supplying this call do so. | |
1338 | */ | |
1339 | ret = call_int_hook(inode_removexattr, 1, dentry, name); | |
1340 | if (ret == 1) | |
1341 | ret = cap_inode_removexattr(dentry, name); | |
42c63330 MZ |
1342 | if (ret) |
1343 | return ret; | |
1344 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1345 | if (ret) |
1346 | return ret; | |
1347 | return evm_inode_removexattr(dentry, name); | |
20510f2f JM |
1348 | } |
1349 | ||
b5376771 SH |
1350 | int security_inode_need_killpriv(struct dentry *dentry) |
1351 | { | |
f25fce3e | 1352 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1353 | } |
1354 | ||
1355 | int security_inode_killpriv(struct dentry *dentry) | |
1356 | { | |
f25fce3e | 1357 | return call_int_hook(inode_killpriv, 0, dentry); |
b5376771 SH |
1358 | } |
1359 | ||
ea861dfd | 1360 | int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) |
20510f2f | 1361 | { |
2885c1e3 CS |
1362 | struct security_hook_list *hp; |
1363 | int rc; | |
1364 | ||
20510f2f | 1365 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1366 | return LSM_RET_DEFAULT(inode_getsecurity); |
2885c1e3 CS |
1367 | /* |
1368 | * Only one module will provide an attribute with a given name. | |
1369 | */ | |
df0ce173 | 1370 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
2885c1e3 | 1371 | rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); |
98e828a0 | 1372 | if (rc != LSM_RET_DEFAULT(inode_getsecurity)) |
2885c1e3 CS |
1373 | return rc; |
1374 | } | |
98e828a0 | 1375 | return LSM_RET_DEFAULT(inode_getsecurity); |
20510f2f JM |
1376 | } |
1377 | ||
1378 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1379 | { | |
2885c1e3 CS |
1380 | struct security_hook_list *hp; |
1381 | int rc; | |
1382 | ||
20510f2f | 1383 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1384 | return LSM_RET_DEFAULT(inode_setsecurity); |
2885c1e3 CS |
1385 | /* |
1386 | * Only one module will provide an attribute with a given name. | |
1387 | */ | |
df0ce173 | 1388 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1389 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1390 | flags); | |
98e828a0 | 1391 | if (rc != LSM_RET_DEFAULT(inode_setsecurity)) |
2885c1e3 CS |
1392 | return rc; |
1393 | } | |
98e828a0 | 1394 | return LSM_RET_DEFAULT(inode_setsecurity); |
20510f2f JM |
1395 | } |
1396 | ||
1397 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1398 | { | |
1399 | if (unlikely(IS_PRIVATE(inode))) | |
1400 | return 0; | |
f25fce3e | 1401 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1402 | } |
c9bccef6 | 1403 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1404 | |
d6335d77 | 1405 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1406 | { |
f25fce3e | 1407 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1408 | } |
1409 | ||
d8ad8b49 VG |
1410 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1411 | { | |
1412 | return call_int_hook(inode_copy_up, 0, src, new); | |
1413 | } | |
1414 | EXPORT_SYMBOL(security_inode_copy_up); | |
1415 | ||
121ab822 VG |
1416 | int security_inode_copy_up_xattr(const char *name) |
1417 | { | |
23e390cd KS |
1418 | struct security_hook_list *hp; |
1419 | int rc; | |
1420 | ||
1421 | /* | |
1422 | * The implementation can return 0 (accept the xattr), 1 (discard the | |
1423 | * xattr), -EOPNOTSUPP if it does not know anything about the xattr or | |
1424 | * any other error code incase of an error. | |
1425 | */ | |
1426 | hlist_for_each_entry(hp, | |
1427 | &security_hook_heads.inode_copy_up_xattr, list) { | |
1428 | rc = hp->hook.inode_copy_up_xattr(name); | |
1429 | if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr)) | |
1430 | return rc; | |
1431 | } | |
1432 | ||
1433 | return LSM_RET_DEFAULT(inode_copy_up_xattr); | |
121ab822 VG |
1434 | } |
1435 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1436 | ||
b230d5ab OM |
1437 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1438 | struct kernfs_node *kn) | |
1439 | { | |
1440 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1441 | } | |
1442 | ||
20510f2f JM |
1443 | int security_file_permission(struct file *file, int mask) |
1444 | { | |
c4ec54b4 EP |
1445 | int ret; |
1446 | ||
f25fce3e | 1447 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1448 | if (ret) |
1449 | return ret; | |
1450 | ||
1451 | return fsnotify_perm(file, mask); | |
20510f2f JM |
1452 | } |
1453 | ||
1454 | int security_file_alloc(struct file *file) | |
1455 | { | |
33bf60ca CS |
1456 | int rc = lsm_file_alloc(file); |
1457 | ||
1458 | if (rc) | |
1459 | return rc; | |
1460 | rc = call_int_hook(file_alloc_security, 0, file); | |
1461 | if (unlikely(rc)) | |
1462 | security_file_free(file); | |
1463 | return rc; | |
20510f2f JM |
1464 | } |
1465 | ||
1466 | void security_file_free(struct file *file) | |
1467 | { | |
33bf60ca CS |
1468 | void *blob; |
1469 | ||
f25fce3e | 1470 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1471 | |
1472 | blob = file->f_security; | |
1473 | if (blob) { | |
1474 | file->f_security = NULL; | |
1475 | kmem_cache_free(lsm_file_cache, blob); | |
1476 | } | |
20510f2f JM |
1477 | } |
1478 | ||
1479 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1480 | { | |
f25fce3e | 1481 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f | 1482 | } |
292f902a | 1483 | EXPORT_SYMBOL_GPL(security_file_ioctl); |
20510f2f | 1484 | |
98de59bf | 1485 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1486 | { |
8b3ec681 | 1487 | /* |
98de59bf AV |
1488 | * Does we have PROT_READ and does the application expect |
1489 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1490 | */ |
98de59bf AV |
1491 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1492 | return prot; | |
8b3ec681 | 1493 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1494 | return prot; |
1495 | /* | |
1496 | * if that's an anonymous mapping, let it. | |
1497 | */ | |
1498 | if (!file) | |
1499 | return prot | PROT_EXEC; | |
1500 | /* | |
1501 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1502 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1503 | */ |
90f8572b | 1504 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1505 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1506 | if (file->f_op->mmap_capabilities) { |
1507 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1508 | if (!(caps & NOMMU_MAP_EXEC)) | |
1509 | return prot; | |
1510 | } | |
8b3ec681 | 1511 | #endif |
98de59bf | 1512 | return prot | PROT_EXEC; |
8b3ec681 | 1513 | } |
98de59bf AV |
1514 | /* anything on noexec mount won't get PROT_EXEC */ |
1515 | return prot; | |
1516 | } | |
1517 | ||
1518 | int security_mmap_file(struct file *file, unsigned long prot, | |
1519 | unsigned long flags) | |
1520 | { | |
1521 | int ret; | |
f25fce3e | 1522 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1523 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1524 | if (ret) |
1525 | return ret; | |
1526 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1527 | } |
1528 | ||
e5467859 AV |
1529 | int security_mmap_addr(unsigned long addr) |
1530 | { | |
f25fce3e | 1531 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1532 | } |
1533 | ||
20510f2f JM |
1534 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1535 | unsigned long prot) | |
1536 | { | |
8eb613c0 MZ |
1537 | int ret; |
1538 | ||
1539 | ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot); | |
1540 | if (ret) | |
1541 | return ret; | |
1542 | return ima_file_mprotect(vma, prot); | |
20510f2f JM |
1543 | } |
1544 | ||
1545 | int security_file_lock(struct file *file, unsigned int cmd) | |
1546 | { | |
f25fce3e | 1547 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1548 | } |
1549 | ||
1550 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1551 | { | |
f25fce3e | 1552 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1553 | } |
1554 | ||
e0b93edd | 1555 | void security_file_set_fowner(struct file *file) |
20510f2f | 1556 | { |
f25fce3e | 1557 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1558 | } |
1559 | ||
1560 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1561 | struct fown_struct *fown, int sig) | |
1562 | { | |
f25fce3e | 1563 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1564 | } |
1565 | ||
1566 | int security_file_receive(struct file *file) | |
1567 | { | |
f25fce3e | 1568 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1569 | } |
1570 | ||
e3f20ae2 | 1571 | int security_file_open(struct file *file) |
20510f2f | 1572 | { |
c4ec54b4 EP |
1573 | int ret; |
1574 | ||
94817692 | 1575 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1576 | if (ret) |
1577 | return ret; | |
1578 | ||
1579 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1580 | } |
1581 | ||
e4e55b47 TH |
1582 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1583 | { | |
f4ad8f2c CS |
1584 | int rc = lsm_task_alloc(task); |
1585 | ||
1586 | if (rc) | |
1587 | return rc; | |
1588 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1589 | if (unlikely(rc)) | |
1590 | security_task_free(task); | |
1591 | return rc; | |
e4e55b47 TH |
1592 | } |
1593 | ||
1a2a4d06 KC |
1594 | void security_task_free(struct task_struct *task) |
1595 | { | |
f25fce3e | 1596 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1597 | |
1598 | kfree(task->security); | |
1599 | task->security = NULL; | |
1a2a4d06 KC |
1600 | } |
1601 | ||
ee18d64c DH |
1602 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1603 | { | |
bbd3662a CS |
1604 | int rc = lsm_cred_alloc(cred, gfp); |
1605 | ||
1606 | if (rc) | |
1607 | return rc; | |
1608 | ||
1609 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1610 | if (unlikely(rc)) |
bbd3662a CS |
1611 | security_cred_free(cred); |
1612 | return rc; | |
ee18d64c DH |
1613 | } |
1614 | ||
d84f4f99 | 1615 | void security_cred_free(struct cred *cred) |
20510f2f | 1616 | { |
a5795fd3 JM |
1617 | /* |
1618 | * There is a failure case in prepare_creds() that | |
1619 | * may result in a call here with ->security being NULL. | |
1620 | */ | |
1621 | if (unlikely(cred->security == NULL)) | |
1622 | return; | |
1623 | ||
f25fce3e | 1624 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1625 | |
1626 | kfree(cred->security); | |
1627 | cred->security = NULL; | |
20510f2f JM |
1628 | } |
1629 | ||
d84f4f99 | 1630 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1631 | { |
bbd3662a CS |
1632 | int rc = lsm_cred_alloc(new, gfp); |
1633 | ||
1634 | if (rc) | |
1635 | return rc; | |
1636 | ||
1637 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1638 | if (unlikely(rc)) |
bbd3662a CS |
1639 | security_cred_free(new); |
1640 | return rc; | |
d84f4f99 DH |
1641 | } |
1642 | ||
ee18d64c DH |
1643 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1644 | { | |
f25fce3e | 1645 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1646 | } |
1647 | ||
3ec30113 MG |
1648 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
1649 | { | |
1650 | *secid = 0; | |
1651 | call_void_hook(cred_getsecid, c, secid); | |
1652 | } | |
1653 | EXPORT_SYMBOL(security_cred_getsecid); | |
1654 | ||
3a3b7ce9 DH |
1655 | int security_kernel_act_as(struct cred *new, u32 secid) |
1656 | { | |
f25fce3e | 1657 | return call_int_hook(kernel_act_as, 0, new, secid); |
3a3b7ce9 DH |
1658 | } |
1659 | ||
1660 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1661 | { | |
f25fce3e | 1662 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1663 | } |
1664 | ||
dd8dbf2e | 1665 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1666 | { |
6eb864c1 MK |
1667 | int ret; |
1668 | ||
1669 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1670 | if (ret) | |
1671 | return ret; | |
1672 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1673 | } |
1674 | ||
2039bda1 KC |
1675 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, |
1676 | bool contents) | |
39eeb4fb MZ |
1677 | { |
1678 | int ret; | |
1679 | ||
2039bda1 | 1680 | ret = call_int_hook(kernel_read_file, 0, file, id, contents); |
39eeb4fb MZ |
1681 | if (ret) |
1682 | return ret; | |
2039bda1 | 1683 | return ima_read_file(file, id, contents); |
39eeb4fb MZ |
1684 | } |
1685 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1686 | ||
bc8ca5b9 MZ |
1687 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1688 | enum kernel_read_file_id id) | |
b44a7dfc | 1689 | { |
cf222217 MZ |
1690 | int ret; |
1691 | ||
1692 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1693 | if (ret) | |
1694 | return ret; | |
1695 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1696 | } |
1697 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1698 | ||
b64fcae7 | 1699 | int security_kernel_load_data(enum kernel_load_data_id id, bool contents) |
377179cd | 1700 | { |
16c267aa MZ |
1701 | int ret; |
1702 | ||
b64fcae7 | 1703 | ret = call_int_hook(kernel_load_data, 0, id, contents); |
16c267aa MZ |
1704 | if (ret) |
1705 | return ret; | |
b64fcae7 | 1706 | return ima_load_data(id, contents); |
377179cd | 1707 | } |
83a68a06 | 1708 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1709 | |
b64fcae7 KC |
1710 | int security_kernel_post_load_data(char *buf, loff_t size, |
1711 | enum kernel_load_data_id id, | |
1712 | char *description) | |
1713 | { | |
1714 | int ret; | |
1715 | ||
1716 | ret = call_int_hook(kernel_post_load_data, 0, buf, size, id, | |
1717 | description); | |
1718 | if (ret) | |
1719 | return ret; | |
1720 | return ima_post_load_data(buf, size, id, description); | |
1721 | } | |
1722 | EXPORT_SYMBOL_GPL(security_kernel_post_load_data); | |
1723 | ||
d84f4f99 DH |
1724 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1725 | int flags) | |
20510f2f | 1726 | { |
f25fce3e | 1727 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1728 | } |
1729 | ||
39030e13 TC |
1730 | int security_task_fix_setgid(struct cred *new, const struct cred *old, |
1731 | int flags) | |
1732 | { | |
1733 | return call_int_hook(task_fix_setgid, 0, new, old, flags); | |
1734 | } | |
1735 | ||
20510f2f JM |
1736 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1737 | { | |
f25fce3e | 1738 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1739 | } |
1740 | ||
1741 | int security_task_getpgid(struct task_struct *p) | |
1742 | { | |
f25fce3e | 1743 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1744 | } |
1745 | ||
1746 | int security_task_getsid(struct task_struct *p) | |
1747 | { | |
f25fce3e | 1748 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1749 | } |
1750 | ||
1751 | void security_task_getsecid(struct task_struct *p, u32 *secid) | |
1752 | { | |
b1d9e6b0 | 1753 | *secid = 0; |
f25fce3e | 1754 | call_void_hook(task_getsecid, p, secid); |
20510f2f JM |
1755 | } |
1756 | EXPORT_SYMBOL(security_task_getsecid); | |
1757 | ||
20510f2f JM |
1758 | int security_task_setnice(struct task_struct *p, int nice) |
1759 | { | |
f25fce3e | 1760 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1761 | } |
1762 | ||
1763 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1764 | { | |
f25fce3e | 1765 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1766 | } |
1767 | ||
1768 | int security_task_getioprio(struct task_struct *p) | |
1769 | { | |
f25fce3e | 1770 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1771 | } |
1772 | ||
791ec491 SS |
1773 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1774 | unsigned int flags) | |
1775 | { | |
1776 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1777 | } | |
1778 | ||
8fd00b4d JS |
1779 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1780 | struct rlimit *new_rlim) | |
20510f2f | 1781 | { |
f25fce3e | 1782 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1783 | } |
1784 | ||
b0ae1981 | 1785 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1786 | { |
f25fce3e | 1787 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1788 | } |
1789 | ||
1790 | int security_task_getscheduler(struct task_struct *p) | |
1791 | { | |
f25fce3e | 1792 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1793 | } |
1794 | ||
1795 | int security_task_movememory(struct task_struct *p) | |
1796 | { | |
f25fce3e | 1797 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1798 | } |
1799 | ||
ae7795bc | 1800 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 1801 | int sig, const struct cred *cred) |
20510f2f | 1802 | { |
6b4f3d01 | 1803 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
1804 | } |
1805 | ||
20510f2f | 1806 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1807 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1808 | { |
b1d9e6b0 | 1809 | int thisrc; |
98e828a0 | 1810 | int rc = LSM_RET_DEFAULT(task_prctl); |
b1d9e6b0 CS |
1811 | struct security_hook_list *hp; |
1812 | ||
df0ce173 | 1813 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 | 1814 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
98e828a0 | 1815 | if (thisrc != LSM_RET_DEFAULT(task_prctl)) { |
b1d9e6b0 CS |
1816 | rc = thisrc; |
1817 | if (thisrc != 0) | |
1818 | break; | |
1819 | } | |
1820 | } | |
1821 | return rc; | |
20510f2f JM |
1822 | } |
1823 | ||
1824 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1825 | { | |
f25fce3e | 1826 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1827 | } |
1828 | ||
1829 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1830 | { | |
f25fce3e | 1831 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1832 | } |
1833 | ||
8a076191 AD |
1834 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1835 | { | |
b1d9e6b0 | 1836 | *secid = 0; |
f25fce3e | 1837 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1838 | } |
1839 | ||
20510f2f JM |
1840 | int security_msg_msg_alloc(struct msg_msg *msg) |
1841 | { | |
ecd5f82e CS |
1842 | int rc = lsm_msg_msg_alloc(msg); |
1843 | ||
1844 | if (unlikely(rc)) | |
1845 | return rc; | |
1846 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
1847 | if (unlikely(rc)) | |
1848 | security_msg_msg_free(msg); | |
1849 | return rc; | |
20510f2f JM |
1850 | } |
1851 | ||
1852 | void security_msg_msg_free(struct msg_msg *msg) | |
1853 | { | |
f25fce3e | 1854 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
1855 | kfree(msg->security); |
1856 | msg->security = NULL; | |
20510f2f JM |
1857 | } |
1858 | ||
d8c6e854 | 1859 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 1860 | { |
ecd5f82e CS |
1861 | int rc = lsm_ipc_alloc(msq); |
1862 | ||
1863 | if (unlikely(rc)) | |
1864 | return rc; | |
1865 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
1866 | if (unlikely(rc)) | |
1867 | security_msg_queue_free(msq); | |
1868 | return rc; | |
20510f2f JM |
1869 | } |
1870 | ||
d8c6e854 | 1871 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 1872 | { |
f25fce3e | 1873 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
1874 | kfree(msq->security); |
1875 | msq->security = NULL; | |
20510f2f JM |
1876 | } |
1877 | ||
d8c6e854 | 1878 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 1879 | { |
f25fce3e | 1880 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
1881 | } |
1882 | ||
d8c6e854 | 1883 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 1884 | { |
f25fce3e | 1885 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
1886 | } |
1887 | ||
d8c6e854 | 1888 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
1889 | struct msg_msg *msg, int msqflg) |
1890 | { | |
f25fce3e | 1891 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
1892 | } |
1893 | ||
d8c6e854 | 1894 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
1895 | struct task_struct *target, long type, int mode) |
1896 | { | |
f25fce3e | 1897 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
1898 | } |
1899 | ||
7191adff | 1900 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 1901 | { |
ecd5f82e CS |
1902 | int rc = lsm_ipc_alloc(shp); |
1903 | ||
1904 | if (unlikely(rc)) | |
1905 | return rc; | |
1906 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
1907 | if (unlikely(rc)) | |
1908 | security_shm_free(shp); | |
1909 | return rc; | |
20510f2f JM |
1910 | } |
1911 | ||
7191adff | 1912 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 1913 | { |
f25fce3e | 1914 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
1915 | kfree(shp->security); |
1916 | shp->security = NULL; | |
20510f2f JM |
1917 | } |
1918 | ||
7191adff | 1919 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 1920 | { |
f25fce3e | 1921 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
1922 | } |
1923 | ||
7191adff | 1924 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 1925 | { |
f25fce3e | 1926 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
1927 | } |
1928 | ||
7191adff | 1929 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 1930 | { |
f25fce3e | 1931 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
1932 | } |
1933 | ||
aefad959 | 1934 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 1935 | { |
ecd5f82e CS |
1936 | int rc = lsm_ipc_alloc(sma); |
1937 | ||
1938 | if (unlikely(rc)) | |
1939 | return rc; | |
1940 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
1941 | if (unlikely(rc)) | |
1942 | security_sem_free(sma); | |
1943 | return rc; | |
20510f2f JM |
1944 | } |
1945 | ||
aefad959 | 1946 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 1947 | { |
f25fce3e | 1948 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
1949 | kfree(sma->security); |
1950 | sma->security = NULL; | |
20510f2f JM |
1951 | } |
1952 | ||
aefad959 | 1953 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 1954 | { |
f25fce3e | 1955 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
1956 | } |
1957 | ||
aefad959 | 1958 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 1959 | { |
f25fce3e | 1960 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
1961 | } |
1962 | ||
aefad959 | 1963 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
1964 | unsigned nsops, int alter) |
1965 | { | |
f25fce3e | 1966 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
1967 | } |
1968 | ||
1969 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
1970 | { | |
1971 | if (unlikely(inode && IS_PRIVATE(inode))) | |
1972 | return; | |
f25fce3e | 1973 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
1974 | } |
1975 | EXPORT_SYMBOL(security_d_instantiate); | |
1976 | ||
6d9c939d CS |
1977 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
1978 | char **value) | |
20510f2f | 1979 | { |
6d9c939d CS |
1980 | struct security_hook_list *hp; |
1981 | ||
1982 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
1983 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1984 | continue; | |
1985 | return hp->hook.getprocattr(p, name, value); | |
1986 | } | |
98e828a0 | 1987 | return LSM_RET_DEFAULT(getprocattr); |
20510f2f JM |
1988 | } |
1989 | ||
6d9c939d CS |
1990 | int security_setprocattr(const char *lsm, const char *name, void *value, |
1991 | size_t size) | |
20510f2f | 1992 | { |
6d9c939d CS |
1993 | struct security_hook_list *hp; |
1994 | ||
1995 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
1996 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
1997 | continue; | |
1998 | return hp->hook.setprocattr(name, value, size); | |
1999 | } | |
98e828a0 | 2000 | return LSM_RET_DEFAULT(setprocattr); |
20510f2f JM |
2001 | } |
2002 | ||
2003 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2004 | { | |
f25fce3e | 2005 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2006 | } |
20510f2f | 2007 | |
746df9b5 DQ |
2008 | int security_ismaclabel(const char *name) |
2009 | { | |
f25fce3e | 2010 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2011 | } |
2012 | EXPORT_SYMBOL(security_ismaclabel); | |
2013 | ||
20510f2f JM |
2014 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
2015 | { | |
0550cfe8 KS |
2016 | struct security_hook_list *hp; |
2017 | int rc; | |
2018 | ||
2019 | /* | |
2020 | * Currently, only one LSM can implement secid_to_secctx (i.e this | |
2021 | * LSM hook is not "stackable"). | |
2022 | */ | |
2023 | hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) { | |
2024 | rc = hp->hook.secid_to_secctx(secid, secdata, seclen); | |
2025 | if (rc != LSM_RET_DEFAULT(secid_to_secctx)) | |
2026 | return rc; | |
2027 | } | |
2028 | ||
2029 | return LSM_RET_DEFAULT(secid_to_secctx); | |
20510f2f JM |
2030 | } |
2031 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2032 | ||
7bf570dc | 2033 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 2034 | { |
b1d9e6b0 | 2035 | *secid = 0; |
f25fce3e | 2036 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
2037 | } |
2038 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2039 | ||
20510f2f JM |
2040 | void security_release_secctx(char *secdata, u32 seclen) |
2041 | { | |
f25fce3e | 2042 | call_void_hook(release_secctx, secdata, seclen); |
20510f2f JM |
2043 | } |
2044 | EXPORT_SYMBOL(security_release_secctx); | |
2045 | ||
6f3be9f5 AG |
2046 | void security_inode_invalidate_secctx(struct inode *inode) |
2047 | { | |
2048 | call_void_hook(inode_invalidate_secctx, inode); | |
2049 | } | |
2050 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2051 | ||
1ee65e37 DQ |
2052 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2053 | { | |
f25fce3e | 2054 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2055 | } |
2056 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2057 | ||
2058 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2059 | { | |
f25fce3e | 2060 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2061 | } |
2062 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2063 | ||
2064 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
2065 | { | |
b1d9e6b0 | 2066 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
2067 | } |
2068 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2069 | ||
344fa64e DH |
2070 | #ifdef CONFIG_WATCH_QUEUE |
2071 | int security_post_notification(const struct cred *w_cred, | |
2072 | const struct cred *cred, | |
2073 | struct watch_notification *n) | |
2074 | { | |
2075 | return call_int_hook(post_notification, 0, w_cred, cred, n); | |
2076 | } | |
2077 | #endif /* CONFIG_WATCH_QUEUE */ | |
2078 | ||
998f5040 DH |
2079 | #ifdef CONFIG_KEY_NOTIFICATIONS |
2080 | int security_watch_key(struct key *key) | |
2081 | { | |
2082 | return call_int_hook(watch_key, 0, key); | |
2083 | } | |
2084 | #endif | |
2085 | ||
20510f2f JM |
2086 | #ifdef CONFIG_SECURITY_NETWORK |
2087 | ||
3610cda5 | 2088 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2089 | { |
f25fce3e | 2090 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2091 | } |
2092 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2093 | ||
2094 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2095 | { | |
f25fce3e | 2096 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2097 | } |
2098 | EXPORT_SYMBOL(security_unix_may_send); | |
2099 | ||
2100 | int security_socket_create(int family, int type, int protocol, int kern) | |
2101 | { | |
f25fce3e | 2102 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2103 | } |
2104 | ||
2105 | int security_socket_post_create(struct socket *sock, int family, | |
2106 | int type, int protocol, int kern) | |
2107 | { | |
f25fce3e | 2108 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2109 | protocol, kern); |
2110 | } | |
2111 | ||
aae7cfcb DH |
2112 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
2113 | { | |
2114 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
2115 | } | |
2116 | EXPORT_SYMBOL(security_socket_socketpair); | |
2117 | ||
20510f2f JM |
2118 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
2119 | { | |
f25fce3e | 2120 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2121 | } |
2122 | ||
2123 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2124 | { | |
f25fce3e | 2125 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2126 | } |
2127 | ||
2128 | int security_socket_listen(struct socket *sock, int backlog) | |
2129 | { | |
f25fce3e | 2130 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2131 | } |
2132 | ||
2133 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2134 | { | |
f25fce3e | 2135 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2136 | } |
2137 | ||
20510f2f JM |
2138 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2139 | { | |
f25fce3e | 2140 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2141 | } |
2142 | ||
2143 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2144 | int size, int flags) | |
2145 | { | |
f25fce3e | 2146 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2147 | } |
2148 | ||
2149 | int security_socket_getsockname(struct socket *sock) | |
2150 | { | |
f25fce3e | 2151 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2152 | } |
2153 | ||
2154 | int security_socket_getpeername(struct socket *sock) | |
2155 | { | |
f25fce3e | 2156 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2157 | } |
2158 | ||
2159 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2160 | { | |
f25fce3e | 2161 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2162 | } |
2163 | ||
2164 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2165 | { | |
f25fce3e | 2166 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2167 | } |
2168 | ||
2169 | int security_socket_shutdown(struct socket *sock, int how) | |
2170 | { | |
f25fce3e | 2171 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2172 | } |
2173 | ||
2174 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2175 | { | |
f25fce3e | 2176 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2177 | } |
2178 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2179 | ||
2180 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2181 | int __user *optlen, unsigned len) | |
2182 | { | |
b1d9e6b0 CS |
2183 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
2184 | optval, optlen, len); | |
20510f2f JM |
2185 | } |
2186 | ||
2187 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
2188 | { | |
e308fd3b JB |
2189 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
2190 | skb, secid); | |
20510f2f JM |
2191 | } |
2192 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2193 | ||
2194 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2195 | { | |
f25fce3e | 2196 | return call_int_hook(sk_alloc_security, 0, sk, family, priority); |
20510f2f JM |
2197 | } |
2198 | ||
2199 | void security_sk_free(struct sock *sk) | |
2200 | { | |
f25fce3e | 2201 | call_void_hook(sk_free_security, sk); |
20510f2f JM |
2202 | } |
2203 | ||
2204 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2205 | { | |
f25fce3e | 2206 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2207 | } |
6230c9b4 | 2208 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f JM |
2209 | |
2210 | void security_sk_classify_flow(struct sock *sk, struct flowi *fl) | |
2211 | { | |
f25fce3e | 2212 | call_void_hook(sk_getsecid, sk, &fl->flowi_secid); |
20510f2f JM |
2213 | } |
2214 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2215 | ||
2216 | void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) | |
2217 | { | |
f25fce3e | 2218 | call_void_hook(req_classify_flow, req, fl); |
20510f2f JM |
2219 | } |
2220 | EXPORT_SYMBOL(security_req_classify_flow); | |
2221 | ||
2222 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2223 | { | |
f25fce3e | 2224 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2225 | } |
2226 | EXPORT_SYMBOL(security_sock_graft); | |
2227 | ||
2228 | int security_inet_conn_request(struct sock *sk, | |
2229 | struct sk_buff *skb, struct request_sock *req) | |
2230 | { | |
f25fce3e | 2231 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2232 | } |
2233 | EXPORT_SYMBOL(security_inet_conn_request); | |
2234 | ||
2235 | void security_inet_csk_clone(struct sock *newsk, | |
2236 | const struct request_sock *req) | |
2237 | { | |
f25fce3e | 2238 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2239 | } |
2240 | ||
2241 | void security_inet_conn_established(struct sock *sk, | |
2242 | struct sk_buff *skb) | |
2243 | { | |
f25fce3e | 2244 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2245 | } |
72e89f50 | 2246 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2247 | |
2606fd1f EP |
2248 | int security_secmark_relabel_packet(u32 secid) |
2249 | { | |
f25fce3e | 2250 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2251 | } |
2252 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2253 | ||
2254 | void security_secmark_refcount_inc(void) | |
2255 | { | |
f25fce3e | 2256 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2257 | } |
2258 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2259 | ||
2260 | void security_secmark_refcount_dec(void) | |
2261 | { | |
f25fce3e | 2262 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2263 | } |
2264 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2265 | ||
5dbbaf2d PM |
2266 | int security_tun_dev_alloc_security(void **security) |
2267 | { | |
f25fce3e | 2268 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2269 | } |
2270 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2271 | ||
2272 | void security_tun_dev_free_security(void *security) | |
2273 | { | |
f25fce3e | 2274 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2275 | } |
2276 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2277 | ||
2b980dbd PM |
2278 | int security_tun_dev_create(void) |
2279 | { | |
f25fce3e | 2280 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2281 | } |
2282 | EXPORT_SYMBOL(security_tun_dev_create); | |
2283 | ||
5dbbaf2d | 2284 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2285 | { |
f25fce3e | 2286 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2287 | } |
5dbbaf2d | 2288 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2289 | |
5dbbaf2d | 2290 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2291 | { |
f25fce3e | 2292 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2293 | } |
2294 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2295 | ||
5dbbaf2d PM |
2296 | int security_tun_dev_open(void *security) |
2297 | { | |
f25fce3e | 2298 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2299 | } |
2300 | EXPORT_SYMBOL(security_tun_dev_open); | |
2301 | ||
72e89f50 RH |
2302 | int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) |
2303 | { | |
2304 | return call_int_hook(sctp_assoc_request, 0, ep, skb); | |
2305 | } | |
2306 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2307 | ||
2308 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2309 | struct sockaddr *address, int addrlen) | |
2310 | { | |
2311 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2312 | address, addrlen); | |
2313 | } | |
2314 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2315 | ||
2316 | void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, | |
2317 | struct sock *newsk) | |
2318 | { | |
2319 | call_void_hook(sctp_sk_clone, ep, sk, newsk); | |
2320 | } | |
2321 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2322 | ||
20510f2f JM |
2323 | #endif /* CONFIG_SECURITY_NETWORK */ |
2324 | ||
d291f1a6 DJ |
2325 | #ifdef CONFIG_SECURITY_INFINIBAND |
2326 | ||
2327 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2328 | { | |
2329 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2330 | } | |
2331 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2332 | ||
47a2b338 DJ |
2333 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2334 | { | |
2335 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2336 | } | |
2337 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2338 | ||
d291f1a6 DJ |
2339 | int security_ib_alloc_security(void **sec) |
2340 | { | |
2341 | return call_int_hook(ib_alloc_security, 0, sec); | |
2342 | } | |
2343 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2344 | ||
2345 | void security_ib_free_security(void *sec) | |
2346 | { | |
2347 | call_void_hook(ib_free_security, sec); | |
2348 | } | |
2349 | EXPORT_SYMBOL(security_ib_free_security); | |
2350 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2351 | ||
20510f2f JM |
2352 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2353 | ||
52a4c640 NA |
2354 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2355 | struct xfrm_user_sec_ctx *sec_ctx, | |
2356 | gfp_t gfp) | |
20510f2f | 2357 | { |
f25fce3e | 2358 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2359 | } |
2360 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2361 | ||
03e1ad7b PM |
2362 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2363 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2364 | { |
f25fce3e | 2365 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2366 | } |
2367 | ||
03e1ad7b | 2368 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2369 | { |
f25fce3e | 2370 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2371 | } |
2372 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2373 | ||
03e1ad7b | 2374 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2375 | { |
f25fce3e | 2376 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2377 | } |
2378 | ||
2e5aa866 PM |
2379 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2380 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2381 | { |
f25fce3e | 2382 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2383 | } |
2384 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2385 | ||
2386 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2387 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2388 | { | |
f25fce3e | 2389 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2390 | } |
2391 | ||
2392 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2393 | { | |
f25fce3e | 2394 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2395 | } |
2396 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2397 | ||
2398 | void security_xfrm_state_free(struct xfrm_state *x) | |
2399 | { | |
f25fce3e | 2400 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2401 | } |
2402 | ||
03e1ad7b | 2403 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
20510f2f | 2404 | { |
f25fce3e | 2405 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
20510f2f JM |
2406 | } |
2407 | ||
2408 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 DM |
2409 | struct xfrm_policy *xp, |
2410 | const struct flowi *fl) | |
20510f2f | 2411 | { |
b1d9e6b0 | 2412 | struct security_hook_list *hp; |
98e828a0 | 2413 | int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match); |
b1d9e6b0 CS |
2414 | |
2415 | /* | |
2416 | * Since this function is expected to return 0 or 1, the judgment | |
2417 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2418 | * we can use the first LSM's judgment because currently only SELinux | |
2419 | * supplies this call. | |
2420 | * | |
2421 | * For speed optimization, we explicitly break the loop rather than | |
2422 | * using the macro | |
2423 | */ | |
df0ce173 | 2424 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 CS |
2425 | list) { |
2426 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl); | |
2427 | break; | |
2428 | } | |
2429 | return rc; | |
20510f2f JM |
2430 | } |
2431 | ||
2432 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2433 | { | |
f25fce3e | 2434 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2435 | } |
2436 | ||
2437 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) | |
2438 | { | |
f25fce3e CS |
2439 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, |
2440 | 0); | |
20510f2f JM |
2441 | |
2442 | BUG_ON(rc); | |
2443 | } | |
2444 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2445 | ||
2446 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2447 | ||
2448 | #ifdef CONFIG_KEYS | |
2449 | ||
d84f4f99 DH |
2450 | int security_key_alloc(struct key *key, const struct cred *cred, |
2451 | unsigned long flags) | |
20510f2f | 2452 | { |
f25fce3e | 2453 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2454 | } |
2455 | ||
2456 | void security_key_free(struct key *key) | |
2457 | { | |
f25fce3e | 2458 | call_void_hook(key_free, key); |
20510f2f JM |
2459 | } |
2460 | ||
8c0637e9 DH |
2461 | int security_key_permission(key_ref_t key_ref, const struct cred *cred, |
2462 | enum key_need_perm need_perm) | |
20510f2f | 2463 | { |
8c0637e9 | 2464 | return call_int_hook(key_permission, 0, key_ref, cred, need_perm); |
20510f2f JM |
2465 | } |
2466 | ||
70a5bb72 DH |
2467 | int security_key_getsecurity(struct key *key, char **_buffer) |
2468 | { | |
b1d9e6b0 | 2469 | *_buffer = NULL; |
f25fce3e | 2470 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2471 | } |
2472 | ||
20510f2f | 2473 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2474 | |
2475 | #ifdef CONFIG_AUDIT | |
2476 | ||
2477 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2478 | { | |
f25fce3e | 2479 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
03d37d25 AD |
2480 | } |
2481 | ||
2482 | int security_audit_rule_known(struct audit_krule *krule) | |
2483 | { | |
f25fce3e | 2484 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2485 | } |
2486 | ||
2487 | void security_audit_rule_free(void *lsmrule) | |
2488 | { | |
f25fce3e | 2489 | call_void_hook(audit_rule_free, lsmrule); |
03d37d25 AD |
2490 | } |
2491 | ||
90462a5b | 2492 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule) |
03d37d25 | 2493 | { |
90462a5b | 2494 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule); |
03d37d25 | 2495 | } |
b1d9e6b0 | 2496 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2497 | |
2498 | #ifdef CONFIG_BPF_SYSCALL | |
2499 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2500 | { | |
2501 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2502 | } | |
2503 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2504 | { | |
2505 | return call_int_hook(bpf_map, 0, map, fmode); | |
2506 | } | |
2507 | int security_bpf_prog(struct bpf_prog *prog) | |
2508 | { | |
2509 | return call_int_hook(bpf_prog, 0, prog); | |
2510 | } | |
2511 | int security_bpf_map_alloc(struct bpf_map *map) | |
2512 | { | |
2513 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2514 | } | |
2515 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2516 | { | |
2517 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2518 | } | |
2519 | void security_bpf_map_free(struct bpf_map *map) | |
2520 | { | |
2521 | call_void_hook(bpf_map_free_security, map); | |
2522 | } | |
2523 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2524 | { | |
2525 | call_void_hook(bpf_prog_free_security, aux); | |
2526 | } | |
2527 | #endif /* CONFIG_BPF_SYSCALL */ | |
9e47d31d MG |
2528 | |
2529 | int security_locked_down(enum lockdown_reason what) | |
2530 | { | |
2531 | return call_int_hook(locked_down, 0, what); | |
2532 | } | |
2533 | EXPORT_SYMBOL(security_locked_down); | |
da97e184 JFG |
2534 | |
2535 | #ifdef CONFIG_PERF_EVENTS | |
2536 | int security_perf_event_open(struct perf_event_attr *attr, int type) | |
2537 | { | |
2538 | return call_int_hook(perf_event_open, 0, attr, type); | |
2539 | } | |
2540 | ||
2541 | int security_perf_event_alloc(struct perf_event *event) | |
2542 | { | |
2543 | return call_int_hook(perf_event_alloc, 0, event); | |
2544 | } | |
2545 | ||
2546 | void security_perf_event_free(struct perf_event *event) | |
2547 | { | |
2548 | call_void_hook(perf_event_free, event); | |
2549 | } | |
2550 | ||
2551 | int security_perf_event_read(struct perf_event *event) | |
2552 | { | |
2553 | return call_int_hook(perf_event_read, 0, event); | |
2554 | } | |
2555 | ||
2556 | int security_perf_event_write(struct perf_event *event) | |
2557 | { | |
2558 | return call_int_hook(perf_event_write, 0, event); | |
2559 | } | |
2560 | #endif /* CONFIG_PERF_EVENTS */ |