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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Security plug functions | |
4 | * | |
5 | * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> | |
6 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
7 | * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> | |
d291f1a6 | 8 | * Copyright (C) 2016 Mellanox Technologies |
1da177e4 LT |
9 | */ |
10 | ||
9b8c7c14 KC |
11 | #define pr_fmt(fmt) "LSM: " fmt |
12 | ||
afdb09c7 | 13 | #include <linux/bpf.h> |
c59ede7b | 14 | #include <linux/capability.h> |
d47be3df | 15 | #include <linux/dcache.h> |
876979c9 | 16 | #include <linux/export.h> |
1da177e4 LT |
17 | #include <linux/init.h> |
18 | #include <linux/kernel.h> | |
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> |
12ddb08a | 32 | #include <net/sock.h> |
1da177e4 | 33 | |
823eb1cc | 34 | #define MAX_LSM_EVM_XATTR 2 |
1da177e4 | 35 | |
2d4d5119 KC |
36 | /* How many LSMs were built into the kernel? */ |
37 | #define LSM_COUNT (__end_lsm_info - __start_lsm_info) | |
38 | ||
59438b46 SS |
39 | /* |
40 | * These are descriptions of the reasons that can be passed to the | |
41 | * security_locked_down() LSM hook. Placing this array here allows | |
42 | * all security modules to use the same descriptions for auditing | |
43 | * purposes. | |
44 | */ | |
45 | const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = { | |
46 | [LOCKDOWN_NONE] = "none", | |
47 | [LOCKDOWN_MODULE_SIGNATURE] = "unsigned module loading", | |
48 | [LOCKDOWN_DEV_MEM] = "/dev/mem,kmem,port", | |
49 | [LOCKDOWN_EFI_TEST] = "/dev/efi_test access", | |
50 | [LOCKDOWN_KEXEC] = "kexec of unsigned images", | |
51 | [LOCKDOWN_HIBERNATION] = "hibernation", | |
52 | [LOCKDOWN_PCI_ACCESS] = "direct PCI access", | |
53 | [LOCKDOWN_IOPORT] = "raw io port access", | |
54 | [LOCKDOWN_MSR] = "raw MSR access", | |
55 | [LOCKDOWN_ACPI_TABLES] = "modifying ACPI tables", | |
56 | [LOCKDOWN_PCMCIA_CIS] = "direct PCMCIA CIS storage", | |
57 | [LOCKDOWN_TIOCSSERIAL] = "reconfiguration of serial port IO", | |
58 | [LOCKDOWN_MODULE_PARAMETERS] = "unsafe module parameters", | |
59 | [LOCKDOWN_MMIOTRACE] = "unsafe mmio", | |
60 | [LOCKDOWN_DEBUGFS] = "debugfs access", | |
61 | [LOCKDOWN_XMON_WR] = "xmon write access", | |
51e1bb9e | 62 | [LOCKDOWN_BPF_WRITE_USER] = "use of bpf to write user RAM", |
59438b46 SS |
63 | [LOCKDOWN_INTEGRITY_MAX] = "integrity", |
64 | [LOCKDOWN_KCORE] = "/proc/kcore access", | |
65 | [LOCKDOWN_KPROBES] = "use of kprobes", | |
71330842 | 66 | [LOCKDOWN_BPF_READ_KERNEL] = "use of bpf to read kernel RAM", |
59438b46 SS |
67 | [LOCKDOWN_PERF] = "unsafe use of perf", |
68 | [LOCKDOWN_TRACEFS] = "use of tracefs", | |
69 | [LOCKDOWN_XMON_RW] = "xmon read and write access", | |
c7a5899e | 70 | [LOCKDOWN_XFRM_SECRET] = "xfrm SA secret", |
59438b46 SS |
71 | [LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality", |
72 | }; | |
73 | ||
3dfc9b02 | 74 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
42df744c | 75 | static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain); |
8f408ab6 | 76 | |
33bf60ca | 77 | static struct kmem_cache *lsm_file_cache; |
afb1cbe3 | 78 | static struct kmem_cache *lsm_inode_cache; |
33bf60ca | 79 | |
d69dece5 | 80 | char *lsm_names; |
bbd3662a CS |
81 | static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init; |
82 | ||
076c54c5 | 83 | /* Boot-time LSM user choice */ |
79f7865d | 84 | static __initdata const char *chosen_lsm_order; |
5ef4e419 | 85 | static __initdata const char *chosen_major_lsm; |
1da177e4 | 86 | |
13e735c0 KC |
87 | static __initconst const char * const builtin_lsm_order = CONFIG_LSM; |
88 | ||
2d4d5119 KC |
89 | /* Ordered list of LSMs to initialize. */ |
90 | static __initdata struct lsm_info **ordered_lsms; | |
14bd99c8 | 91 | static __initdata struct lsm_info *exclusive; |
2d4d5119 | 92 | |
9b8c7c14 KC |
93 | static __initdata bool debug; |
94 | #define init_debug(...) \ | |
95 | do { \ | |
96 | if (debug) \ | |
97 | pr_info(__VA_ARGS__); \ | |
98 | } while (0) | |
99 | ||
f4941d75 KC |
100 | static bool __init is_enabled(struct lsm_info *lsm) |
101 | { | |
a8027fb0 KC |
102 | if (!lsm->enabled) |
103 | return false; | |
f4941d75 | 104 | |
a8027fb0 | 105 | return *lsm->enabled; |
f4941d75 KC |
106 | } |
107 | ||
108 | /* Mark an LSM's enabled flag. */ | |
109 | static int lsm_enabled_true __initdata = 1; | |
110 | static int lsm_enabled_false __initdata = 0; | |
111 | static void __init set_enabled(struct lsm_info *lsm, bool enabled) | |
112 | { | |
113 | /* | |
114 | * When an LSM hasn't configured an enable variable, we can use | |
115 | * a hard-coded location for storing the default enabled state. | |
116 | */ | |
117 | if (!lsm->enabled) { | |
118 | if (enabled) | |
119 | lsm->enabled = &lsm_enabled_true; | |
120 | else | |
121 | lsm->enabled = &lsm_enabled_false; | |
122 | } else if (lsm->enabled == &lsm_enabled_true) { | |
123 | if (!enabled) | |
124 | lsm->enabled = &lsm_enabled_false; | |
125 | } else if (lsm->enabled == &lsm_enabled_false) { | |
126 | if (enabled) | |
127 | lsm->enabled = &lsm_enabled_true; | |
128 | } else { | |
129 | *lsm->enabled = enabled; | |
130 | } | |
131 | } | |
132 | ||
2d4d5119 KC |
133 | /* Is an LSM already listed in the ordered LSMs list? */ |
134 | static bool __init exists_ordered_lsm(struct lsm_info *lsm) | |
135 | { | |
136 | struct lsm_info **check; | |
137 | ||
138 | for (check = ordered_lsms; *check; check++) | |
139 | if (*check == lsm) | |
140 | return true; | |
141 | ||
142 | return false; | |
143 | } | |
144 | ||
145 | /* Append an LSM to the list of ordered LSMs to initialize. */ | |
146 | static int last_lsm __initdata; | |
147 | static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from) | |
148 | { | |
149 | /* Ignore duplicate selections. */ | |
150 | if (exists_ordered_lsm(lsm)) | |
151 | return; | |
152 | ||
153 | if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from)) | |
154 | return; | |
155 | ||
a8027fb0 KC |
156 | /* Enable this LSM, if it is not already set. */ |
157 | if (!lsm->enabled) | |
158 | lsm->enabled = &lsm_enabled_true; | |
2d4d5119 | 159 | ordered_lsms[last_lsm++] = lsm; |
a8027fb0 | 160 | |
2d4d5119 KC |
161 | init_debug("%s ordering: %s (%sabled)\n", from, lsm->name, |
162 | is_enabled(lsm) ? "en" : "dis"); | |
163 | } | |
164 | ||
f4941d75 KC |
165 | /* Is an LSM allowed to be initialized? */ |
166 | static bool __init lsm_allowed(struct lsm_info *lsm) | |
167 | { | |
168 | /* Skip if the LSM is disabled. */ | |
169 | if (!is_enabled(lsm)) | |
170 | return false; | |
171 | ||
14bd99c8 KC |
172 | /* Not allowed if another exclusive LSM already initialized. */ |
173 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) { | |
174 | init_debug("exclusive disabled: %s\n", lsm->name); | |
175 | return false; | |
176 | } | |
177 | ||
f4941d75 KC |
178 | return true; |
179 | } | |
180 | ||
bbd3662a CS |
181 | static void __init lsm_set_blob_size(int *need, int *lbs) |
182 | { | |
183 | int offset; | |
184 | ||
185 | if (*need > 0) { | |
186 | offset = *lbs; | |
187 | *lbs += *need; | |
188 | *need = offset; | |
189 | } | |
190 | } | |
191 | ||
192 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
193 | { | |
194 | if (!needed) | |
195 | return; | |
196 | ||
197 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 198 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
199 | /* |
200 | * The inode blob gets an rcu_head in addition to | |
201 | * what the modules might need. | |
202 | */ | |
203 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
204 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
205 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
206 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
207 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
1aea7808 | 208 | lsm_set_blob_size(&needed->lbs_superblock, &blob_sizes.lbs_superblock); |
12ddb08a | 209 | lsm_set_blob_size(&needed->lbs_sock, &blob_sizes.lbs_sock); |
f4ad8f2c | 210 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
211 | } |
212 | ||
d8e9bbd4 KC |
213 | /* Prepare LSM for initialization. */ |
214 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
215 | { |
216 | int enabled = lsm_allowed(lsm); | |
217 | ||
218 | /* Record enablement (to handle any following exclusive LSMs). */ | |
219 | set_enabled(lsm, enabled); | |
220 | ||
d8e9bbd4 | 221 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 222 | if (enabled) { |
14bd99c8 KC |
223 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
224 | exclusive = lsm; | |
225 | init_debug("exclusive chosen: %s\n", lsm->name); | |
226 | } | |
bbd3662a CS |
227 | |
228 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
229 | } |
230 | } | |
231 | ||
232 | /* Initialize a given LSM, if it is enabled. */ | |
233 | static void __init initialize_lsm(struct lsm_info *lsm) | |
234 | { | |
235 | if (is_enabled(lsm)) { | |
236 | int ret; | |
14bd99c8 | 237 | |
f4941d75 KC |
238 | init_debug("initializing %s\n", lsm->name); |
239 | ret = lsm->init(); | |
240 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
241 | } | |
242 | } | |
243 | ||
13e735c0 | 244 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 245 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
246 | { |
247 | struct lsm_info *lsm; | |
13e735c0 KC |
248 | char *sep, *name, *next; |
249 | ||
e2bc445b KC |
250 | /* LSM_ORDER_FIRST is always first. */ |
251 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
252 | if (lsm->order == LSM_ORDER_FIRST) | |
253 | append_ordered_lsm(lsm, "first"); | |
254 | } | |
255 | ||
7e611486 | 256 | /* Process "security=", if given. */ |
7e611486 KC |
257 | if (chosen_major_lsm) { |
258 | struct lsm_info *major; | |
259 | ||
260 | /* | |
261 | * To match the original "security=" behavior, this | |
262 | * explicitly does NOT fallback to another Legacy Major | |
263 | * if the selected one was separately disabled: disable | |
264 | * all non-matching Legacy Major LSMs. | |
265 | */ | |
266 | for (major = __start_lsm_info; major < __end_lsm_info; | |
267 | major++) { | |
268 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
269 | strcmp(major->name, chosen_major_lsm) != 0) { | |
270 | set_enabled(major, false); | |
271 | init_debug("security=%s disabled: %s\n", | |
272 | chosen_major_lsm, major->name); | |
273 | } | |
274 | } | |
275 | } | |
5ef4e419 | 276 | |
13e735c0 KC |
277 | sep = kstrdup(order, GFP_KERNEL); |
278 | next = sep; | |
279 | /* Walk the list, looking for matching LSMs. */ | |
280 | while ((name = strsep(&next, ",")) != NULL) { | |
281 | bool found = false; | |
282 | ||
283 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
284 | if (lsm->order == LSM_ORDER_MUTABLE && |
285 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
286 | append_ordered_lsm(lsm, origin); |
287 | found = true; | |
288 | } | |
289 | } | |
290 | ||
291 | if (!found) | |
292 | init_debug("%s ignored: %s\n", origin, name); | |
657d910b | 293 | } |
c91d8106 CS |
294 | |
295 | /* Process "security=", if given. */ | |
296 | if (chosen_major_lsm) { | |
297 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
298 | if (exists_ordered_lsm(lsm)) | |
299 | continue; | |
300 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
301 | append_ordered_lsm(lsm, "security="); | |
302 | } | |
303 | } | |
304 | ||
305 | /* Disable all LSMs not in the ordered list. */ | |
306 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
307 | if (exists_ordered_lsm(lsm)) | |
308 | continue; | |
309 | set_enabled(lsm, false); | |
310 | init_debug("%s disabled: %s\n", origin, lsm->name); | |
311 | } | |
312 | ||
13e735c0 | 313 | kfree(sep); |
657d910b KC |
314 | } |
315 | ||
1cfb2a51 TH |
316 | static void __init lsm_early_cred(struct cred *cred); |
317 | static void __init lsm_early_task(struct task_struct *task); | |
318 | ||
e6b1db98 MG |
319 | static int lsm_append(const char *new, char **result); |
320 | ||
2d4d5119 KC |
321 | static void __init ordered_lsm_init(void) |
322 | { | |
323 | struct lsm_info **lsm; | |
324 | ||
325 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
326 | GFP_KERNEL); | |
327 | ||
89a9684e KC |
328 | if (chosen_lsm_order) { |
329 | if (chosen_major_lsm) { | |
330 | pr_info("security= is ignored because it is superseded by lsm=\n"); | |
331 | chosen_major_lsm = NULL; | |
332 | } | |
79f7865d | 333 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 334 | } else |
79f7865d | 335 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
336 | |
337 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
338 | prepare_lsm(*lsm); |
339 | ||
1aea7808 CS |
340 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
341 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); | |
342 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); | |
343 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); | |
344 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
345 | init_debug("superblock blob size = %d\n", blob_sizes.lbs_superblock); | |
12ddb08a | 346 | init_debug("sock blob size = %d\n", blob_sizes.lbs_sock); |
1aea7808 | 347 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); |
f17b27a2 | 348 | init_debug("lsmblob size = %zu\n", sizeof(struct lsmblob)); |
33bf60ca CS |
349 | |
350 | /* | |
351 | * Create any kmem_caches needed for blobs | |
352 | */ | |
353 | if (blob_sizes.lbs_file) | |
354 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
355 | blob_sizes.lbs_file, 0, | |
356 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
357 | if (blob_sizes.lbs_inode) |
358 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
359 | blob_sizes.lbs_inode, 0, | |
360 | SLAB_PANIC, NULL); | |
bbd3662a | 361 | |
1cfb2a51 TH |
362 | lsm_early_cred((struct cred *) current->cred); |
363 | lsm_early_task(current); | |
d8e9bbd4 KC |
364 | for (lsm = ordered_lsms; *lsm; lsm++) |
365 | initialize_lsm(*lsm); | |
2d4d5119 KC |
366 | |
367 | kfree(ordered_lsms); | |
368 | } | |
369 | ||
e6b1db98 MG |
370 | int __init early_security_init(void) |
371 | { | |
372 | int i; | |
373 | struct hlist_head *list = (struct hlist_head *) &security_hook_heads; | |
374 | struct lsm_info *lsm; | |
375 | ||
376 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head); | |
377 | i++) | |
378 | INIT_HLIST_HEAD(&list[i]); | |
379 | ||
380 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
381 | if (!lsm->enabled) | |
382 | lsm->enabled = &lsm_enabled_true; | |
383 | prepare_lsm(lsm); | |
384 | initialize_lsm(lsm); | |
385 | } | |
386 | ||
387 | return 0; | |
388 | } | |
389 | ||
1da177e4 LT |
390 | /** |
391 | * security_init - initializes the security framework | |
392 | * | |
393 | * This should be called early in the kernel initialization sequence. | |
394 | */ | |
395 | int __init security_init(void) | |
396 | { | |
e6b1db98 | 397 | struct lsm_info *lsm; |
3dfc9b02 | 398 | |
98d29170 KC |
399 | pr_info("Security Framework initializing\n"); |
400 | ||
e6b1db98 MG |
401 | /* |
402 | * Append the names of the early LSM modules now that kmalloc() is | |
403 | * available | |
404 | */ | |
405 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
406 | if (lsm->enabled) | |
407 | lsm_append(lsm->name, &lsm_names); | |
408 | } | |
1da177e4 | 409 | |
657d910b KC |
410 | /* Load LSMs in specified order. */ |
411 | ordered_lsm_init(); | |
412 | ||
1da177e4 LT |
413 | return 0; |
414 | } | |
415 | ||
076c54c5 | 416 | /* Save user chosen LSM */ |
5ef4e419 | 417 | static int __init choose_major_lsm(char *str) |
076c54c5 | 418 | { |
5ef4e419 | 419 | chosen_major_lsm = str; |
076c54c5 AD |
420 | return 1; |
421 | } | |
5ef4e419 | 422 | __setup("security=", choose_major_lsm); |
076c54c5 | 423 | |
79f7865d KC |
424 | /* Explicitly choose LSM initialization order. */ |
425 | static int __init choose_lsm_order(char *str) | |
426 | { | |
427 | chosen_lsm_order = str; | |
428 | return 1; | |
429 | } | |
430 | __setup("lsm=", choose_lsm_order); | |
431 | ||
9b8c7c14 KC |
432 | /* Enable LSM order debugging. */ |
433 | static int __init enable_debug(char *str) | |
434 | { | |
435 | debug = true; | |
436 | return 1; | |
437 | } | |
438 | __setup("lsm.debug", enable_debug); | |
439 | ||
3bb857e4 MS |
440 | static bool match_last_lsm(const char *list, const char *lsm) |
441 | { | |
442 | const char *last; | |
443 | ||
444 | if (WARN_ON(!list || !lsm)) | |
445 | return false; | |
446 | last = strrchr(list, ','); | |
447 | if (last) | |
448 | /* Pass the comma, strcmp() will check for '\0' */ | |
449 | last++; | |
450 | else | |
451 | last = list; | |
452 | return !strcmp(last, lsm); | |
453 | } | |
454 | ||
e6b1db98 | 455 | static int lsm_append(const char *new, char **result) |
d69dece5 CS |
456 | { |
457 | char *cp; | |
458 | ||
459 | if (*result == NULL) { | |
460 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
461 | if (*result == NULL) |
462 | return -ENOMEM; | |
d69dece5 | 463 | } else { |
3bb857e4 MS |
464 | /* Check if it is the last registered name */ |
465 | if (match_last_lsm(*result, new)) | |
466 | return 0; | |
d69dece5 CS |
467 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
468 | if (cp == NULL) | |
469 | return -ENOMEM; | |
470 | kfree(*result); | |
471 | *result = cp; | |
472 | } | |
473 | return 0; | |
474 | } | |
475 | ||
f17b27a2 CS |
476 | /* |
477 | * Current index to use while initializing the lsmblob secid list. | |
478 | */ | |
479 | static int lsm_slot __lsm_ro_after_init; | |
480 | ||
d69dece5 CS |
481 | /** |
482 | * security_add_hooks - Add a modules hooks to the hook lists. | |
483 | * @hooks: the hooks to add | |
484 | * @count: the number of hooks to add | |
f17b27a2 | 485 | * @lsmid: the the identification information for the security module |
d69dece5 CS |
486 | * |
487 | * Each LSM has to register its hooks with the infrastructure. | |
f17b27a2 CS |
488 | * If the LSM is using hooks that export secids allocate a slot |
489 | * for it in the lsmblob. | |
d69dece5 CS |
490 | */ |
491 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
f17b27a2 | 492 | struct lsm_id *lsmid) |
d69dece5 CS |
493 | { |
494 | int i; | |
495 | ||
f17b27a2 CS |
496 | if (lsmid->slot == LSMBLOB_NEEDED) { |
497 | if (lsm_slot >= LSMBLOB_ENTRIES) | |
498 | panic("%s Too many LSMs registered.\n", __func__); | |
499 | lsmid->slot = lsm_slot++; | |
500 | init_debug("%s assigned lsmblob slot %d\n", lsmid->lsm, | |
501 | lsmid->slot); | |
502 | } | |
503 | ||
d69dece5 | 504 | for (i = 0; i < count; i++) { |
f17b27a2 | 505 | hooks[i].lsmid = lsmid; |
df0ce173 | 506 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
d69dece5 | 507 | } |
e6b1db98 MG |
508 | |
509 | /* | |
510 | * Don't try to append during early_security_init(), we'll come back | |
511 | * and fix this up afterwards. | |
512 | */ | |
513 | if (slab_is_available()) { | |
f17b27a2 | 514 | if (lsm_append(lsmid->lsm, &lsm_names) < 0) |
e6b1db98 MG |
515 | panic("%s - Cannot get early memory.\n", __func__); |
516 | } | |
d69dece5 CS |
517 | } |
518 | ||
42df744c | 519 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 520 | { |
42df744c JK |
521 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
522 | event, data); | |
8f408ab6 | 523 | } |
42df744c | 524 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 525 | |
42df744c | 526 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 527 | { |
42df744c JK |
528 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
529 | nb); | |
8f408ab6 | 530 | } |
42df744c | 531 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 532 | |
42df744c | 533 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 534 | { |
42df744c JK |
535 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
536 | nb); | |
8f408ab6 | 537 | } |
42df744c | 538 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 539 | |
bbd3662a CS |
540 | /** |
541 | * lsm_cred_alloc - allocate a composite cred blob | |
542 | * @cred: the cred that needs a blob | |
543 | * @gfp: allocation type | |
544 | * | |
545 | * Allocate the cred blob for all the modules | |
546 | * | |
547 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
548 | */ | |
549 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
550 | { | |
551 | if (blob_sizes.lbs_cred == 0) { | |
552 | cred->security = NULL; | |
553 | return 0; | |
554 | } | |
555 | ||
556 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
557 | if (cred->security == NULL) | |
558 | return -ENOMEM; | |
559 | return 0; | |
560 | } | |
561 | ||
562 | /** | |
563 | * lsm_early_cred - during initialization allocate a composite cred blob | |
564 | * @cred: the cred that needs a blob | |
565 | * | |
1cfb2a51 | 566 | * Allocate the cred blob for all the modules |
bbd3662a | 567 | */ |
1cfb2a51 | 568 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 569 | { |
1cfb2a51 | 570 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 571 | |
bbd3662a CS |
572 | if (rc) |
573 | panic("%s: Early cred alloc failed.\n", __func__); | |
574 | } | |
575 | ||
33bf60ca CS |
576 | /** |
577 | * lsm_file_alloc - allocate a composite file blob | |
578 | * @file: the file that needs a blob | |
579 | * | |
580 | * Allocate the file blob for all the modules | |
581 | * | |
582 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
583 | */ | |
584 | static int lsm_file_alloc(struct file *file) | |
585 | { | |
586 | if (!lsm_file_cache) { | |
587 | file->f_security = NULL; | |
588 | return 0; | |
589 | } | |
590 | ||
591 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
592 | if (file->f_security == NULL) | |
593 | return -ENOMEM; | |
594 | return 0; | |
595 | } | |
596 | ||
afb1cbe3 CS |
597 | /** |
598 | * lsm_inode_alloc - allocate a composite inode blob | |
599 | * @inode: the inode that needs a blob | |
600 | * | |
601 | * Allocate the inode blob for all the modules | |
602 | * | |
603 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
604 | */ | |
605 | int lsm_inode_alloc(struct inode *inode) | |
606 | { | |
607 | if (!lsm_inode_cache) { | |
608 | inode->i_security = NULL; | |
609 | return 0; | |
610 | } | |
611 | ||
612 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
613 | if (inode->i_security == NULL) | |
614 | return -ENOMEM; | |
615 | return 0; | |
616 | } | |
617 | ||
f4ad8f2c CS |
618 | /** |
619 | * lsm_task_alloc - allocate a composite task blob | |
620 | * @task: the task that needs a blob | |
621 | * | |
622 | * Allocate the task blob for all the modules | |
623 | * | |
624 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
625 | */ | |
3e8c7367 | 626 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c CS |
627 | { |
628 | if (blob_sizes.lbs_task == 0) { | |
629 | task->security = NULL; | |
630 | return 0; | |
631 | } | |
632 | ||
633 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
634 | if (task->security == NULL) | |
635 | return -ENOMEM; | |
636 | return 0; | |
637 | } | |
638 | ||
ecd5f82e CS |
639 | /** |
640 | * lsm_ipc_alloc - allocate a composite ipc blob | |
641 | * @kip: the ipc that needs a blob | |
642 | * | |
643 | * Allocate the ipc blob for all the modules | |
644 | * | |
645 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
646 | */ | |
3e8c7367 | 647 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
648 | { |
649 | if (blob_sizes.lbs_ipc == 0) { | |
650 | kip->security = NULL; | |
651 | return 0; | |
652 | } | |
653 | ||
654 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
655 | if (kip->security == NULL) | |
656 | return -ENOMEM; | |
657 | return 0; | |
658 | } | |
659 | ||
660 | /** | |
661 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
662 | * @mp: the msg_msg that needs a blob | |
663 | * | |
664 | * Allocate the ipc blob for all the modules | |
665 | * | |
666 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
667 | */ | |
3e8c7367 | 668 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
669 | { |
670 | if (blob_sizes.lbs_msg_msg == 0) { | |
671 | mp->security = NULL; | |
672 | return 0; | |
673 | } | |
674 | ||
675 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
676 | if (mp->security == NULL) | |
677 | return -ENOMEM; | |
678 | return 0; | |
679 | } | |
680 | ||
12ddb08a CS |
681 | /** |
682 | * lsm_sock_alloc - allocate a composite sock blob | |
683 | * @sock: the sock that needs a blob | |
684 | * @priority: allocation mode | |
685 | * | |
686 | * Allocate the sock blob for all the modules | |
687 | * | |
688 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
689 | */ | |
690 | static int lsm_sock_alloc(struct sock *sock, gfp_t priority) | |
691 | { | |
692 | if (blob_sizes.lbs_sock == 0) { | |
693 | sock->sk_security = NULL; | |
694 | return 0; | |
695 | } | |
696 | ||
697 | sock->sk_security = kzalloc(blob_sizes.lbs_sock, priority); | |
698 | if (sock->sk_security == NULL) | |
699 | return -ENOMEM; | |
700 | return 0; | |
701 | } | |
702 | ||
f4ad8f2c CS |
703 | /** |
704 | * lsm_early_task - during initialization allocate a composite task blob | |
705 | * @task: the task that needs a blob | |
706 | * | |
1cfb2a51 | 707 | * Allocate the task blob for all the modules |
f4ad8f2c | 708 | */ |
1cfb2a51 | 709 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 710 | { |
1cfb2a51 | 711 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 712 | |
f4ad8f2c CS |
713 | if (rc) |
714 | panic("%s: Early task alloc failed.\n", __func__); | |
715 | } | |
716 | ||
1aea7808 CS |
717 | /** |
718 | * lsm_superblock_alloc - allocate a composite superblock blob | |
719 | * @sb: the superblock that needs a blob | |
720 | * | |
721 | * Allocate the superblock blob for all the modules | |
722 | * | |
723 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
724 | */ | |
725 | static int lsm_superblock_alloc(struct super_block *sb) | |
726 | { | |
727 | if (blob_sizes.lbs_superblock == 0) { | |
728 | sb->s_security = NULL; | |
729 | return 0; | |
730 | } | |
731 | ||
732 | sb->s_security = kzalloc(blob_sizes.lbs_superblock, GFP_KERNEL); | |
733 | if (sb->s_security == NULL) | |
734 | return -ENOMEM; | |
735 | return 0; | |
736 | } | |
737 | ||
98e828a0 KS |
738 | /* |
739 | * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and | |
740 | * can be accessed with: | |
741 | * | |
742 | * LSM_RET_DEFAULT(<hook_name>) | |
743 | * | |
744 | * The macros below define static constants for the default value of each | |
745 | * LSM hook. | |
746 | */ | |
747 | #define LSM_RET_DEFAULT(NAME) (NAME##_default) | |
748 | #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME) | |
749 | #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \ | |
750 | static const int LSM_RET_DEFAULT(NAME) = (DEFAULT); | |
751 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ | |
752 | DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME) | |
753 | ||
754 | #include <linux/lsm_hook_defs.h> | |
755 | #undef LSM_HOOK | |
756 | ||
f25fce3e | 757 | /* |
b1d9e6b0 | 758 | * Hook list operation macros. |
1da177e4 | 759 | * |
f25fce3e CS |
760 | * call_void_hook: |
761 | * This is a hook that does not return a value. | |
1da177e4 | 762 | * |
f25fce3e CS |
763 | * call_int_hook: |
764 | * This is a hook that returns a value. | |
1da177e4 | 765 | */ |
1da177e4 | 766 | |
b1d9e6b0 CS |
767 | #define call_void_hook(FUNC, ...) \ |
768 | do { \ | |
769 | struct security_hook_list *P; \ | |
770 | \ | |
df0ce173 | 771 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
772 | P->hook.FUNC(__VA_ARGS__); \ |
773 | } while (0) | |
774 | ||
775 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
776 | int RC = IRC; \ | |
777 | do { \ | |
778 | struct security_hook_list *P; \ | |
779 | \ | |
df0ce173 | 780 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
781 | RC = P->hook.FUNC(__VA_ARGS__); \ |
782 | if (RC != 0) \ | |
783 | break; \ | |
784 | } \ | |
785 | } while (0); \ | |
786 | RC; \ | |
787 | }) | |
1da177e4 | 788 | |
20510f2f JM |
789 | /* Security operations */ |
790 | ||
79af7307 SS |
791 | int security_binder_set_context_mgr(struct task_struct *mgr) |
792 | { | |
f25fce3e | 793 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 | 794 | } |
ebafbcf7 | 795 | EXPORT_SYMBOL(security_binder_set_context_mgr); |
79af7307 SS |
796 | |
797 | int security_binder_transaction(struct task_struct *from, | |
798 | struct task_struct *to) | |
799 | { | |
f25fce3e | 800 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 | 801 | } |
ebafbcf7 | 802 | EXPORT_SYMBOL(security_binder_transaction); |
79af7307 SS |
803 | |
804 | int security_binder_transfer_binder(struct task_struct *from, | |
805 | struct task_struct *to) | |
806 | { | |
f25fce3e | 807 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 | 808 | } |
ebafbcf7 | 809 | EXPORT_SYMBOL(security_binder_transfer_binder); |
79af7307 SS |
810 | |
811 | int security_binder_transfer_file(struct task_struct *from, | |
812 | struct task_struct *to, struct file *file) | |
813 | { | |
f25fce3e | 814 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 | 815 | } |
ebafbcf7 | 816 | EXPORT_SYMBOL(security_binder_transfer_file); |
79af7307 | 817 | |
9e48858f | 818 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 819 | { |
f25fce3e | 820 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
821 | } |
822 | ||
823 | int security_ptrace_traceme(struct task_struct *parent) | |
824 | { | |
f25fce3e | 825 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
826 | } |
827 | ||
828 | int security_capget(struct task_struct *target, | |
829 | kernel_cap_t *effective, | |
830 | kernel_cap_t *inheritable, | |
831 | kernel_cap_t *permitted) | |
832 | { | |
f25fce3e CS |
833 | return call_int_hook(capget, 0, target, |
834 | effective, inheritable, permitted); | |
20510f2f JM |
835 | } |
836 | ||
d84f4f99 DH |
837 | int security_capset(struct cred *new, const struct cred *old, |
838 | const kernel_cap_t *effective, | |
839 | const kernel_cap_t *inheritable, | |
840 | const kernel_cap_t *permitted) | |
20510f2f | 841 | { |
f25fce3e CS |
842 | return call_int_hook(capset, 0, new, old, |
843 | effective, inheritable, permitted); | |
20510f2f JM |
844 | } |
845 | ||
c1a85a00 MM |
846 | int security_capable(const struct cred *cred, |
847 | struct user_namespace *ns, | |
848 | int cap, | |
849 | unsigned int opts) | |
20510f2f | 850 | { |
c1a85a00 | 851 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
852 | } |
853 | ||
20510f2f JM |
854 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
855 | { | |
f25fce3e | 856 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
857 | } |
858 | ||
859 | int security_quota_on(struct dentry *dentry) | |
860 | { | |
f25fce3e | 861 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
862 | } |
863 | ||
12b3052c | 864 | int security_syslog(int type) |
20510f2f | 865 | { |
f25fce3e | 866 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
867 | } |
868 | ||
457db29b | 869 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 870 | { |
f25fce3e | 871 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
872 | } |
873 | ||
20510f2f JM |
874 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
875 | { | |
b1d9e6b0 CS |
876 | struct security_hook_list *hp; |
877 | int cap_sys_admin = 1; | |
878 | int rc; | |
879 | ||
880 | /* | |
881 | * The module will respond with a positive value if | |
882 | * it thinks the __vm_enough_memory() call should be | |
883 | * made with the cap_sys_admin set. If all of the modules | |
884 | * agree that it should be set it will. If any module | |
885 | * thinks it should not be set it won't. | |
886 | */ | |
df0ce173 | 887 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
888 | rc = hp->hook.vm_enough_memory(mm, pages); |
889 | if (rc <= 0) { | |
890 | cap_sys_admin = 0; | |
891 | break; | |
892 | } | |
893 | } | |
894 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
895 | } |
896 | ||
b8bff599 | 897 | int security_bprm_creds_for_exec(struct linux_binprm *bprm) |
20510f2f | 898 | { |
b8bff599 EB |
899 | return call_int_hook(bprm_creds_for_exec, 0, bprm); |
900 | } | |
901 | ||
56305aa9 | 902 | int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file) |
20510f2f | 903 | { |
56305aa9 | 904 | return call_int_hook(bprm_creds_from_file, 0, bprm, file); |
20510f2f JM |
905 | } |
906 | ||
a6f76f23 | 907 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 908 | { |
6c21a7fb MZ |
909 | int ret; |
910 | ||
f25fce3e | 911 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
912 | if (ret) |
913 | return ret; | |
914 | return ima_bprm_check(bprm); | |
20510f2f JM |
915 | } |
916 | ||
a6f76f23 | 917 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 918 | { |
f25fce3e | 919 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
920 | } |
921 | ||
a6f76f23 | 922 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 923 | { |
f25fce3e | 924 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
925 | } |
926 | ||
0b52075e AV |
927 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
928 | { | |
929 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
930 | } | |
931 | ||
da2441fd DH |
932 | int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param) |
933 | { | |
934 | return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param); | |
935 | } | |
936 | ||
20510f2f JM |
937 | int security_sb_alloc(struct super_block *sb) |
938 | { | |
1aea7808 CS |
939 | int rc = lsm_superblock_alloc(sb); |
940 | ||
941 | if (unlikely(rc)) | |
942 | return rc; | |
943 | rc = call_int_hook(sb_alloc_security, 0, sb); | |
944 | if (unlikely(rc)) | |
945 | security_sb_free(sb); | |
946 | return rc; | |
20510f2f JM |
947 | } |
948 | ||
83e804f0 MS |
949 | void security_sb_delete(struct super_block *sb) |
950 | { | |
951 | call_void_hook(sb_delete, sb); | |
20510f2f JM |
952 | } |
953 | ||
954 | void security_sb_free(struct super_block *sb) | |
955 | { | |
f25fce3e | 956 | call_void_hook(sb_free_security, sb); |
1aea7808 CS |
957 | kfree(sb->s_security); |
958 | sb->s_security = NULL; | |
20510f2f JM |
959 | } |
960 | ||
204cc0cc | 961 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 962 | { |
204cc0cc AV |
963 | if (!*mnt_opts) |
964 | return; | |
965 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
966 | *mnt_opts = NULL; | |
20510f2f | 967 | } |
204cc0cc | 968 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 969 | |
204cc0cc | 970 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 971 | { |
204cc0cc | 972 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 973 | } |
f5c0c26d | 974 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 975 | |
69c4a42d OK |
976 | int security_sb_mnt_opts_compat(struct super_block *sb, |
977 | void *mnt_opts) | |
978 | { | |
979 | return call_int_hook(sb_mnt_opts_compat, 0, sb, mnt_opts); | |
980 | } | |
981 | EXPORT_SYMBOL(security_sb_mnt_opts_compat); | |
982 | ||
c039bc3c | 983 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 984 | void *mnt_opts) |
20510f2f | 985 | { |
204cc0cc | 986 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 987 | } |
a65001e8 | 988 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 989 | |
a10d7c22 | 990 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 991 | { |
a10d7c22 | 992 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
993 | } |
994 | ||
2069f457 EP |
995 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
996 | { | |
f25fce3e | 997 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
998 | } |
999 | ||
20510f2f JM |
1000 | int security_sb_statfs(struct dentry *dentry) |
1001 | { | |
f25fce3e | 1002 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
1003 | } |
1004 | ||
8a04c43b | 1005 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 1006 | const char *type, unsigned long flags, void *data) |
20510f2f | 1007 | { |
f25fce3e | 1008 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
1009 | } |
1010 | ||
20510f2f JM |
1011 | int security_sb_umount(struct vfsmount *mnt, int flags) |
1012 | { | |
f25fce3e | 1013 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
1014 | } |
1015 | ||
3b73b68c | 1016 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 1017 | { |
f25fce3e | 1018 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
1019 | } |
1020 | ||
c9180a57 | 1021 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 1022 | void *mnt_opts, |
649f6e77 DQ |
1023 | unsigned long kern_flags, |
1024 | unsigned long *set_kern_flags) | |
c9180a57 | 1025 | { |
b1d9e6b0 | 1026 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
1027 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
1028 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 1029 | } |
e0007529 | 1030 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 1031 | |
094f7b69 | 1032 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
1033 | struct super_block *newsb, |
1034 | unsigned long kern_flags, | |
1035 | unsigned long *set_kern_flags) | |
c9180a57 | 1036 | { |
0b4d3452 SM |
1037 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
1038 | kern_flags, set_kern_flags); | |
c9180a57 | 1039 | } |
e0007529 EP |
1040 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
1041 | ||
757cbe59 AV |
1042 | int security_add_mnt_opt(const char *option, const char *val, int len, |
1043 | void **mnt_opts) | |
e0007529 | 1044 | { |
757cbe59 AV |
1045 | return call_int_hook(sb_add_mnt_opt, -EINVAL, |
1046 | option, val, len, mnt_opts); | |
e0007529 | 1047 | } |
757cbe59 | 1048 | EXPORT_SYMBOL(security_add_mnt_opt); |
c9180a57 | 1049 | |
2db154b3 DH |
1050 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
1051 | { | |
1052 | return call_int_hook(move_mount, 0, from_path, to_path); | |
1053 | } | |
1054 | ||
ac5656d8 AG |
1055 | int security_path_notify(const struct path *path, u64 mask, |
1056 | unsigned int obj_type) | |
1057 | { | |
1058 | return call_int_hook(path_notify, 0, path, mask, obj_type); | |
1059 | } | |
1060 | ||
20510f2f JM |
1061 | int security_inode_alloc(struct inode *inode) |
1062 | { | |
afb1cbe3 CS |
1063 | int rc = lsm_inode_alloc(inode); |
1064 | ||
1065 | if (unlikely(rc)) | |
1066 | return rc; | |
1067 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
1068 | if (unlikely(rc)) | |
1069 | security_inode_free(inode); | |
1070 | return rc; | |
1071 | } | |
1072 | ||
1073 | static void inode_free_by_rcu(struct rcu_head *head) | |
1074 | { | |
1075 | /* | |
1076 | * The rcu head is at the start of the inode blob | |
1077 | */ | |
1078 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
1079 | } |
1080 | ||
1081 | void security_inode_free(struct inode *inode) | |
1082 | { | |
f381c272 | 1083 | integrity_inode_free(inode); |
f25fce3e | 1084 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
1085 | /* |
1086 | * The inode may still be referenced in a path walk and | |
1087 | * a call to security_inode_permission() can be made | |
1088 | * after inode_free_security() is called. Ideally, the VFS | |
1089 | * wouldn't do this, but fixing that is a much harder | |
1090 | * job. For now, simply free the i_security via RCU, and | |
1091 | * leave the current inode->i_security pointer intact. | |
1092 | * The inode will be freed after the RCU grace period too. | |
1093 | */ | |
1094 | if (inode->i_security) | |
1095 | call_rcu((struct rcu_head *)inode->i_security, | |
1096 | inode_free_by_rcu); | |
20510f2f JM |
1097 | } |
1098 | ||
d47be3df | 1099 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 1100 | const struct qstr *name, void **ctx, |
d47be3df DQ |
1101 | u32 *ctxlen) |
1102 | { | |
b1d9e6b0 CS |
1103 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
1104 | name, ctx, ctxlen); | |
d47be3df DQ |
1105 | } |
1106 | EXPORT_SYMBOL(security_dentry_init_security); | |
1107 | ||
2602625b VG |
1108 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
1109 | struct qstr *name, | |
1110 | const struct cred *old, struct cred *new) | |
1111 | { | |
1112 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
1113 | name, old, new); | |
1114 | } | |
1115 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
1116 | ||
20510f2f | 1117 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
1118 | const struct qstr *qstr, |
1119 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 1120 | { |
823eb1cc MZ |
1121 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
1122 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
1123 | int ret; |
1124 | ||
20510f2f | 1125 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 1126 | return 0; |
9d8f13ba | 1127 | |
9d8f13ba | 1128 | if (!initxattrs) |
e308fd3b JB |
1129 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
1130 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 1131 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 1132 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 1133 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
1134 | &lsm_xattr->name, |
1135 | &lsm_xattr->value, | |
1136 | &lsm_xattr->value_len); | |
1137 | if (ret) | |
1138 | goto out; | |
823eb1cc MZ |
1139 | |
1140 | evm_xattr = lsm_xattr + 1; | |
1141 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1142 | if (ret) | |
1143 | goto out; | |
9d8f13ba MZ |
1144 | ret = initxattrs(inode, new_xattrs, fs_data); |
1145 | out: | |
9548906b | 1146 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1147 | kfree(xattr->value); |
9d8f13ba MZ |
1148 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1149 | } | |
1150 | EXPORT_SYMBOL(security_inode_init_security); | |
1151 | ||
215b674b LG |
1152 | int security_inode_init_security_anon(struct inode *inode, |
1153 | const struct qstr *name, | |
1154 | const struct inode *context_inode) | |
1155 | { | |
1156 | return call_int_hook(inode_init_security_anon, 0, inode, name, | |
1157 | context_inode); | |
1158 | } | |
1159 | ||
9d8f13ba | 1160 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, |
9548906b | 1161 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1162 | void **value, size_t *len) |
20510f2f JM |
1163 | { |
1164 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1165 | return -EOPNOTSUPP; |
e308fd3b JB |
1166 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1167 | qstr, name, value, len); | |
20510f2f | 1168 | } |
9d8f13ba | 1169 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1170 | |
be6d3e56 | 1171 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1172 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1173 | unsigned int dev) |
1174 | { | |
c6f493d6 | 1175 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1176 | return 0; |
f25fce3e | 1177 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1178 | } |
1179 | EXPORT_SYMBOL(security_path_mknod); | |
1180 | ||
d3607752 | 1181 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1182 | { |
c6f493d6 | 1183 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1184 | return 0; |
f25fce3e | 1185 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1186 | } |
82140443 | 1187 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1188 | |
989f74e0 | 1189 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1190 | { |
c6f493d6 | 1191 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1192 | return 0; |
f25fce3e | 1193 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 KT |
1194 | } |
1195 | ||
989f74e0 | 1196 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1197 | { |
c6f493d6 | 1198 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1199 | return 0; |
f25fce3e | 1200 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1201 | } |
82140443 | 1202 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1203 | |
d3607752 | 1204 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1205 | const char *old_name) |
1206 | { | |
c6f493d6 | 1207 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1208 | return 0; |
f25fce3e | 1209 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 KT |
1210 | } |
1211 | ||
3ccee46a | 1212 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1213 | struct dentry *new_dentry) |
1214 | { | |
c6f493d6 | 1215 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1216 | return 0; |
f25fce3e | 1217 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 KT |
1218 | } |
1219 | ||
3ccee46a AV |
1220 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1221 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1222 | unsigned int flags) |
be6d3e56 | 1223 | { |
c6f493d6 DH |
1224 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1225 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1226 | return 0; |
da1ce067 MS |
1227 | |
1228 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1229 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1230 | old_dir, old_dentry); | |
da1ce067 MS |
1231 | if (err) |
1232 | return err; | |
1233 | } | |
1234 | ||
f25fce3e CS |
1235 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1236 | new_dentry); | |
be6d3e56 | 1237 | } |
82140443 | 1238 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1239 | |
81f4c506 | 1240 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1241 | { |
c6f493d6 | 1242 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1243 | return 0; |
f25fce3e | 1244 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1245 | } |
89eda068 | 1246 | |
be01f9f2 | 1247 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1248 | { |
c6f493d6 | 1249 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1250 | return 0; |
f25fce3e | 1251 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 TH |
1252 | } |
1253 | ||
7fd25dac | 1254 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1255 | { |
c6f493d6 | 1256 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1257 | return 0; |
f25fce3e | 1258 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1259 | } |
8b8efb44 | 1260 | |
77b286c0 | 1261 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1262 | { |
f25fce3e | 1263 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1264 | } |
be6d3e56 KT |
1265 | #endif |
1266 | ||
4acdaf27 | 1267 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1268 | { |
1269 | if (unlikely(IS_PRIVATE(dir))) | |
1270 | return 0; | |
f25fce3e | 1271 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1272 | } |
800a9647 | 1273 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1274 | |
1275 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1276 | struct dentry *new_dentry) | |
1277 | { | |
c6f493d6 | 1278 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1279 | return 0; |
f25fce3e | 1280 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1281 | } |
1282 | ||
1283 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1284 | { | |
c6f493d6 | 1285 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1286 | return 0; |
f25fce3e | 1287 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1288 | } |
1289 | ||
1290 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1291 | const char *old_name) | |
1292 | { | |
1293 | if (unlikely(IS_PRIVATE(dir))) | |
1294 | return 0; | |
f25fce3e | 1295 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1296 | } |
1297 | ||
18bb1db3 | 1298 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1299 | { |
1300 | if (unlikely(IS_PRIVATE(dir))) | |
1301 | return 0; | |
f25fce3e | 1302 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1303 | } |
800a9647 | 1304 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1305 | |
1306 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1307 | { | |
c6f493d6 | 1308 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1309 | return 0; |
f25fce3e | 1310 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1311 | } |
1312 | ||
1a67aafb | 1313 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1314 | { |
1315 | if (unlikely(IS_PRIVATE(dir))) | |
1316 | return 0; | |
f25fce3e | 1317 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1318 | } |
1319 | ||
1320 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1321 | struct inode *new_dir, struct dentry *new_dentry, |
1322 | unsigned int flags) | |
20510f2f | 1323 | { |
c6f493d6 DH |
1324 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1325 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1326 | return 0; |
da1ce067 MS |
1327 | |
1328 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1329 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1330 | old_dir, old_dentry); |
1331 | if (err) | |
1332 | return err; | |
1333 | } | |
1334 | ||
f25fce3e | 1335 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1336 | new_dir, new_dentry); |
1337 | } | |
1338 | ||
1339 | int security_inode_readlink(struct dentry *dentry) | |
1340 | { | |
c6f493d6 | 1341 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1342 | return 0; |
f25fce3e | 1343 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1344 | } |
1345 | ||
bda0be7a N |
1346 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1347 | bool rcu) | |
20510f2f | 1348 | { |
bda0be7a | 1349 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1350 | return 0; |
e22619a2 | 1351 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1352 | } |
1353 | ||
b77b0646 | 1354 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1355 | { |
1356 | if (unlikely(IS_PRIVATE(inode))) | |
1357 | return 0; | |
f25fce3e | 1358 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f JM |
1359 | } |
1360 | ||
1361 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1362 | { | |
817b54aa MZ |
1363 | int ret; |
1364 | ||
c6f493d6 | 1365 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1366 | return 0; |
f25fce3e | 1367 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1368 | if (ret) |
1369 | return ret; | |
1370 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1371 | } |
b1da47e2 | 1372 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1373 | |
3f7036a0 | 1374 | int security_inode_getattr(const struct path *path) |
20510f2f | 1375 | { |
c6f493d6 | 1376 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1377 | return 0; |
f25fce3e | 1378 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1379 | } |
1380 | ||
71bc356f CB |
1381 | int security_inode_setxattr(struct user_namespace *mnt_userns, |
1382 | struct dentry *dentry, const char *name, | |
8f0cfa52 | 1383 | const void *value, size_t size, int flags) |
20510f2f | 1384 | { |
3e1be52d MZ |
1385 | int ret; |
1386 | ||
c6f493d6 | 1387 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1388 | return 0; |
b1d9e6b0 CS |
1389 | /* |
1390 | * SELinux and Smack integrate the cap call, | |
1391 | * so assume that all LSMs supplying this call do so. | |
1392 | */ | |
71bc356f CB |
1393 | ret = call_int_hook(inode_setxattr, 1, mnt_userns, dentry, name, value, |
1394 | size, flags); | |
b1d9e6b0 CS |
1395 | |
1396 | if (ret == 1) | |
1397 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1398 | if (ret) |
1399 | return ret; | |
1400 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1401 | if (ret) |
1402 | return ret; | |
7e135dc7 | 1403 | return evm_inode_setxattr(mnt_userns, dentry, name, value, size); |
20510f2f JM |
1404 | } |
1405 | ||
8f0cfa52 DH |
1406 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1407 | const void *value, size_t size, int flags) | |
20510f2f | 1408 | { |
c6f493d6 | 1409 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1410 | return; |
f25fce3e | 1411 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1412 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1413 | } |
1414 | ||
8f0cfa52 | 1415 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1416 | { |
c6f493d6 | 1417 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1418 | return 0; |
f25fce3e | 1419 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1420 | } |
1421 | ||
1422 | int security_inode_listxattr(struct dentry *dentry) | |
1423 | { | |
c6f493d6 | 1424 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1425 | return 0; |
f25fce3e | 1426 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1427 | } |
1428 | ||
71bc356f CB |
1429 | int security_inode_removexattr(struct user_namespace *mnt_userns, |
1430 | struct dentry *dentry, const char *name) | |
20510f2f | 1431 | { |
3e1be52d MZ |
1432 | int ret; |
1433 | ||
c6f493d6 | 1434 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1435 | return 0; |
b1d9e6b0 CS |
1436 | /* |
1437 | * SELinux and Smack integrate the cap call, | |
1438 | * so assume that all LSMs supplying this call do so. | |
1439 | */ | |
71bc356f | 1440 | ret = call_int_hook(inode_removexattr, 1, mnt_userns, dentry, name); |
b1d9e6b0 | 1441 | if (ret == 1) |
71bc356f | 1442 | ret = cap_inode_removexattr(mnt_userns, dentry, name); |
42c63330 MZ |
1443 | if (ret) |
1444 | return ret; | |
1445 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1446 | if (ret) |
1447 | return ret; | |
7e135dc7 | 1448 | return evm_inode_removexattr(mnt_userns, dentry, name); |
20510f2f JM |
1449 | } |
1450 | ||
b5376771 SH |
1451 | int security_inode_need_killpriv(struct dentry *dentry) |
1452 | { | |
f25fce3e | 1453 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1454 | } |
1455 | ||
71bc356f CB |
1456 | int security_inode_killpriv(struct user_namespace *mnt_userns, |
1457 | struct dentry *dentry) | |
b5376771 | 1458 | { |
71bc356f | 1459 | return call_int_hook(inode_killpriv, 0, mnt_userns, dentry); |
b5376771 SH |
1460 | } |
1461 | ||
71bc356f CB |
1462 | int security_inode_getsecurity(struct user_namespace *mnt_userns, |
1463 | struct inode *inode, const char *name, | |
1464 | void **buffer, bool alloc) | |
20510f2f | 1465 | { |
2885c1e3 CS |
1466 | struct security_hook_list *hp; |
1467 | int rc; | |
1468 | ||
20510f2f | 1469 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1470 | return LSM_RET_DEFAULT(inode_getsecurity); |
2885c1e3 CS |
1471 | /* |
1472 | * Only one module will provide an attribute with a given name. | |
1473 | */ | |
df0ce173 | 1474 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
71bc356f | 1475 | rc = hp->hook.inode_getsecurity(mnt_userns, inode, name, buffer, alloc); |
98e828a0 | 1476 | if (rc != LSM_RET_DEFAULT(inode_getsecurity)) |
2885c1e3 CS |
1477 | return rc; |
1478 | } | |
98e828a0 | 1479 | return LSM_RET_DEFAULT(inode_getsecurity); |
20510f2f JM |
1480 | } |
1481 | ||
1482 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1483 | { | |
2885c1e3 CS |
1484 | struct security_hook_list *hp; |
1485 | int rc; | |
1486 | ||
20510f2f | 1487 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1488 | return LSM_RET_DEFAULT(inode_setsecurity); |
2885c1e3 CS |
1489 | /* |
1490 | * Only one module will provide an attribute with a given name. | |
1491 | */ | |
df0ce173 | 1492 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1493 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1494 | flags); | |
98e828a0 | 1495 | if (rc != LSM_RET_DEFAULT(inode_setsecurity)) |
2885c1e3 CS |
1496 | return rc; |
1497 | } | |
98e828a0 | 1498 | return LSM_RET_DEFAULT(inode_setsecurity); |
20510f2f JM |
1499 | } |
1500 | ||
1501 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1502 | { | |
1503 | if (unlikely(IS_PRIVATE(inode))) | |
1504 | return 0; | |
f25fce3e | 1505 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1506 | } |
c9bccef6 | 1507 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1508 | |
d6335d77 | 1509 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1510 | { |
f25fce3e | 1511 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1512 | } |
1513 | ||
d8ad8b49 VG |
1514 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1515 | { | |
1516 | return call_int_hook(inode_copy_up, 0, src, new); | |
1517 | } | |
1518 | EXPORT_SYMBOL(security_inode_copy_up); | |
1519 | ||
121ab822 VG |
1520 | int security_inode_copy_up_xattr(const char *name) |
1521 | { | |
23e390cd KS |
1522 | struct security_hook_list *hp; |
1523 | int rc; | |
1524 | ||
1525 | /* | |
1526 | * The implementation can return 0 (accept the xattr), 1 (discard the | |
1527 | * xattr), -EOPNOTSUPP if it does not know anything about the xattr or | |
1528 | * any other error code incase of an error. | |
1529 | */ | |
1530 | hlist_for_each_entry(hp, | |
1531 | &security_hook_heads.inode_copy_up_xattr, list) { | |
1532 | rc = hp->hook.inode_copy_up_xattr(name); | |
1533 | if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr)) | |
1534 | return rc; | |
1535 | } | |
1536 | ||
1537 | return LSM_RET_DEFAULT(inode_copy_up_xattr); | |
121ab822 VG |
1538 | } |
1539 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1540 | ||
b230d5ab OM |
1541 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1542 | struct kernfs_node *kn) | |
1543 | { | |
1544 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1545 | } | |
1546 | ||
20510f2f JM |
1547 | int security_file_permission(struct file *file, int mask) |
1548 | { | |
c4ec54b4 EP |
1549 | int ret; |
1550 | ||
f25fce3e | 1551 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1552 | if (ret) |
1553 | return ret; | |
1554 | ||
1555 | return fsnotify_perm(file, mask); | |
20510f2f JM |
1556 | } |
1557 | ||
1558 | int security_file_alloc(struct file *file) | |
1559 | { | |
33bf60ca CS |
1560 | int rc = lsm_file_alloc(file); |
1561 | ||
1562 | if (rc) | |
1563 | return rc; | |
1564 | rc = call_int_hook(file_alloc_security, 0, file); | |
1565 | if (unlikely(rc)) | |
1566 | security_file_free(file); | |
1567 | return rc; | |
20510f2f JM |
1568 | } |
1569 | ||
1570 | void security_file_free(struct file *file) | |
1571 | { | |
33bf60ca CS |
1572 | void *blob; |
1573 | ||
f25fce3e | 1574 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1575 | |
1576 | blob = file->f_security; | |
1577 | if (blob) { | |
1578 | file->f_security = NULL; | |
1579 | kmem_cache_free(lsm_file_cache, blob); | |
1580 | } | |
20510f2f JM |
1581 | } |
1582 | ||
1583 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1584 | { | |
f25fce3e | 1585 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f | 1586 | } |
292f902a | 1587 | EXPORT_SYMBOL_GPL(security_file_ioctl); |
20510f2f | 1588 | |
98de59bf | 1589 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1590 | { |
8b3ec681 | 1591 | /* |
98de59bf AV |
1592 | * Does we have PROT_READ and does the application expect |
1593 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1594 | */ |
98de59bf AV |
1595 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1596 | return prot; | |
8b3ec681 | 1597 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1598 | return prot; |
1599 | /* | |
1600 | * if that's an anonymous mapping, let it. | |
1601 | */ | |
1602 | if (!file) | |
1603 | return prot | PROT_EXEC; | |
1604 | /* | |
1605 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1606 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1607 | */ |
90f8572b | 1608 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1609 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1610 | if (file->f_op->mmap_capabilities) { |
1611 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1612 | if (!(caps & NOMMU_MAP_EXEC)) | |
1613 | return prot; | |
1614 | } | |
8b3ec681 | 1615 | #endif |
98de59bf | 1616 | return prot | PROT_EXEC; |
8b3ec681 | 1617 | } |
98de59bf AV |
1618 | /* anything on noexec mount won't get PROT_EXEC */ |
1619 | return prot; | |
1620 | } | |
1621 | ||
1622 | int security_mmap_file(struct file *file, unsigned long prot, | |
1623 | unsigned long flags) | |
1624 | { | |
1625 | int ret; | |
f25fce3e | 1626 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1627 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1628 | if (ret) |
1629 | return ret; | |
1630 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1631 | } |
1632 | ||
e5467859 AV |
1633 | int security_mmap_addr(unsigned long addr) |
1634 | { | |
f25fce3e | 1635 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1636 | } |
1637 | ||
20510f2f JM |
1638 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1639 | unsigned long prot) | |
1640 | { | |
8eb613c0 MZ |
1641 | int ret; |
1642 | ||
1643 | ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot); | |
1644 | if (ret) | |
1645 | return ret; | |
1646 | return ima_file_mprotect(vma, prot); | |
20510f2f JM |
1647 | } |
1648 | ||
1649 | int security_file_lock(struct file *file, unsigned int cmd) | |
1650 | { | |
f25fce3e | 1651 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1652 | } |
1653 | ||
1654 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1655 | { | |
f25fce3e | 1656 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1657 | } |
1658 | ||
e0b93edd | 1659 | void security_file_set_fowner(struct file *file) |
20510f2f | 1660 | { |
f25fce3e | 1661 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1662 | } |
1663 | ||
1664 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1665 | struct fown_struct *fown, int sig) | |
1666 | { | |
f25fce3e | 1667 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1668 | } |
1669 | ||
1670 | int security_file_receive(struct file *file) | |
1671 | { | |
f25fce3e | 1672 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1673 | } |
1674 | ||
e3f20ae2 | 1675 | int security_file_open(struct file *file) |
20510f2f | 1676 | { |
c4ec54b4 EP |
1677 | int ret; |
1678 | ||
94817692 | 1679 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1680 | if (ret) |
1681 | return ret; | |
1682 | ||
1683 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1684 | } |
1685 | ||
e4e55b47 TH |
1686 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1687 | { | |
f4ad8f2c CS |
1688 | int rc = lsm_task_alloc(task); |
1689 | ||
1690 | if (rc) | |
1691 | return rc; | |
1692 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1693 | if (unlikely(rc)) | |
1694 | security_task_free(task); | |
1695 | return rc; | |
e4e55b47 TH |
1696 | } |
1697 | ||
1a2a4d06 KC |
1698 | void security_task_free(struct task_struct *task) |
1699 | { | |
f25fce3e | 1700 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1701 | |
1702 | kfree(task->security); | |
1703 | task->security = NULL; | |
1a2a4d06 KC |
1704 | } |
1705 | ||
ee18d64c DH |
1706 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1707 | { | |
bbd3662a CS |
1708 | int rc = lsm_cred_alloc(cred, gfp); |
1709 | ||
1710 | if (rc) | |
1711 | return rc; | |
1712 | ||
1713 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1714 | if (unlikely(rc)) |
bbd3662a CS |
1715 | security_cred_free(cred); |
1716 | return rc; | |
ee18d64c DH |
1717 | } |
1718 | ||
d84f4f99 | 1719 | void security_cred_free(struct cred *cred) |
20510f2f | 1720 | { |
a5795fd3 JM |
1721 | /* |
1722 | * There is a failure case in prepare_creds() that | |
1723 | * may result in a call here with ->security being NULL. | |
1724 | */ | |
1725 | if (unlikely(cred->security == NULL)) | |
1726 | return; | |
1727 | ||
f25fce3e | 1728 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1729 | |
1730 | kfree(cred->security); | |
1731 | cred->security = NULL; | |
20510f2f JM |
1732 | } |
1733 | ||
d84f4f99 | 1734 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1735 | { |
bbd3662a CS |
1736 | int rc = lsm_cred_alloc(new, gfp); |
1737 | ||
1738 | if (rc) | |
1739 | return rc; | |
1740 | ||
1741 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1742 | if (unlikely(rc)) |
bbd3662a CS |
1743 | security_cred_free(new); |
1744 | return rc; | |
d84f4f99 DH |
1745 | } |
1746 | ||
ee18d64c DH |
1747 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1748 | { | |
f25fce3e | 1749 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1750 | } |
1751 | ||
3ec30113 MG |
1752 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
1753 | { | |
1754 | *secid = 0; | |
1755 | call_void_hook(cred_getsecid, c, secid); | |
1756 | } | |
1757 | EXPORT_SYMBOL(security_cred_getsecid); | |
1758 | ||
27b390fd | 1759 | int security_kernel_act_as(struct cred *new, struct lsmblob *blob) |
3a3b7ce9 | 1760 | { |
27b390fd CS |
1761 | struct security_hook_list *hp; |
1762 | int rc; | |
1763 | ||
1764 | hlist_for_each_entry(hp, &security_hook_heads.kernel_act_as, list) { | |
1765 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
1766 | continue; | |
1767 | rc = hp->hook.kernel_act_as(new, blob->secid[hp->lsmid->slot]); | |
1768 | if (rc != 0) | |
1769 | return rc; | |
1770 | } | |
1771 | return 0; | |
3a3b7ce9 DH |
1772 | } |
1773 | ||
1774 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1775 | { | |
f25fce3e | 1776 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1777 | } |
1778 | ||
dd8dbf2e | 1779 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1780 | { |
6eb864c1 MK |
1781 | int ret; |
1782 | ||
1783 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1784 | if (ret) | |
1785 | return ret; | |
1786 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1787 | } |
1788 | ||
2039bda1 KC |
1789 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, |
1790 | bool contents) | |
39eeb4fb MZ |
1791 | { |
1792 | int ret; | |
1793 | ||
2039bda1 | 1794 | ret = call_int_hook(kernel_read_file, 0, file, id, contents); |
39eeb4fb MZ |
1795 | if (ret) |
1796 | return ret; | |
2039bda1 | 1797 | return ima_read_file(file, id, contents); |
39eeb4fb MZ |
1798 | } |
1799 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1800 | ||
bc8ca5b9 MZ |
1801 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1802 | enum kernel_read_file_id id) | |
b44a7dfc | 1803 | { |
cf222217 MZ |
1804 | int ret; |
1805 | ||
1806 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1807 | if (ret) | |
1808 | return ret; | |
1809 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1810 | } |
1811 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1812 | ||
b64fcae7 | 1813 | int security_kernel_load_data(enum kernel_load_data_id id, bool contents) |
377179cd | 1814 | { |
16c267aa MZ |
1815 | int ret; |
1816 | ||
b64fcae7 | 1817 | ret = call_int_hook(kernel_load_data, 0, id, contents); |
16c267aa MZ |
1818 | if (ret) |
1819 | return ret; | |
b64fcae7 | 1820 | return ima_load_data(id, contents); |
377179cd | 1821 | } |
83a68a06 | 1822 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1823 | |
b64fcae7 KC |
1824 | int security_kernel_post_load_data(char *buf, loff_t size, |
1825 | enum kernel_load_data_id id, | |
1826 | char *description) | |
1827 | { | |
1828 | int ret; | |
1829 | ||
1830 | ret = call_int_hook(kernel_post_load_data, 0, buf, size, id, | |
1831 | description); | |
1832 | if (ret) | |
1833 | return ret; | |
1834 | return ima_post_load_data(buf, size, id, description); | |
1835 | } | |
1836 | EXPORT_SYMBOL_GPL(security_kernel_post_load_data); | |
1837 | ||
d84f4f99 DH |
1838 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1839 | int flags) | |
20510f2f | 1840 | { |
f25fce3e | 1841 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1842 | } |
1843 | ||
39030e13 TC |
1844 | int security_task_fix_setgid(struct cred *new, const struct cred *old, |
1845 | int flags) | |
1846 | { | |
1847 | return call_int_hook(task_fix_setgid, 0, new, old, flags); | |
1848 | } | |
1849 | ||
20510f2f JM |
1850 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1851 | { | |
f25fce3e | 1852 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1853 | } |
1854 | ||
1855 | int security_task_getpgid(struct task_struct *p) | |
1856 | { | |
f25fce3e | 1857 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1858 | } |
1859 | ||
1860 | int security_task_getsid(struct task_struct *p) | |
1861 | { | |
f25fce3e | 1862 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1863 | } |
1864 | ||
4ebd7651 | 1865 | void security_task_getsecid_subj(struct task_struct *p, u32 *secid) |
20510f2f | 1866 | { |
b1d9e6b0 | 1867 | *secid = 0; |
4ebd7651 | 1868 | call_void_hook(task_getsecid_subj, p, secid); |
20510f2f | 1869 | } |
4ebd7651 PM |
1870 | EXPORT_SYMBOL(security_task_getsecid_subj); |
1871 | ||
1872 | void security_task_getsecid_obj(struct task_struct *p, u32 *secid) | |
1873 | { | |
1874 | *secid = 0; | |
1875 | call_void_hook(task_getsecid_obj, p, secid); | |
1876 | } | |
1877 | EXPORT_SYMBOL(security_task_getsecid_obj); | |
20510f2f | 1878 | |
20510f2f JM |
1879 | int security_task_setnice(struct task_struct *p, int nice) |
1880 | { | |
f25fce3e | 1881 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1882 | } |
1883 | ||
1884 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1885 | { | |
f25fce3e | 1886 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1887 | } |
1888 | ||
1889 | int security_task_getioprio(struct task_struct *p) | |
1890 | { | |
f25fce3e | 1891 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1892 | } |
1893 | ||
791ec491 SS |
1894 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1895 | unsigned int flags) | |
1896 | { | |
1897 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1898 | } | |
1899 | ||
8fd00b4d JS |
1900 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1901 | struct rlimit *new_rlim) | |
20510f2f | 1902 | { |
f25fce3e | 1903 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1904 | } |
1905 | ||
b0ae1981 | 1906 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1907 | { |
f25fce3e | 1908 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1909 | } |
1910 | ||
1911 | int security_task_getscheduler(struct task_struct *p) | |
1912 | { | |
f25fce3e | 1913 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1914 | } |
1915 | ||
1916 | int security_task_movememory(struct task_struct *p) | |
1917 | { | |
f25fce3e | 1918 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1919 | } |
1920 | ||
ae7795bc | 1921 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 1922 | int sig, const struct cred *cred) |
20510f2f | 1923 | { |
6b4f3d01 | 1924 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
1925 | } |
1926 | ||
20510f2f | 1927 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1928 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1929 | { |
b1d9e6b0 | 1930 | int thisrc; |
98e828a0 | 1931 | int rc = LSM_RET_DEFAULT(task_prctl); |
b1d9e6b0 CS |
1932 | struct security_hook_list *hp; |
1933 | ||
df0ce173 | 1934 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 | 1935 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
98e828a0 | 1936 | if (thisrc != LSM_RET_DEFAULT(task_prctl)) { |
b1d9e6b0 CS |
1937 | rc = thisrc; |
1938 | if (thisrc != 0) | |
1939 | break; | |
1940 | } | |
1941 | } | |
1942 | return rc; | |
20510f2f JM |
1943 | } |
1944 | ||
1945 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1946 | { | |
f25fce3e | 1947 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1948 | } |
1949 | ||
1950 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1951 | { | |
f25fce3e | 1952 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1953 | } |
1954 | ||
8a076191 AD |
1955 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1956 | { | |
b1d9e6b0 | 1957 | *secid = 0; |
f25fce3e | 1958 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1959 | } |
1960 | ||
20510f2f JM |
1961 | int security_msg_msg_alloc(struct msg_msg *msg) |
1962 | { | |
ecd5f82e CS |
1963 | int rc = lsm_msg_msg_alloc(msg); |
1964 | ||
1965 | if (unlikely(rc)) | |
1966 | return rc; | |
1967 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
1968 | if (unlikely(rc)) | |
1969 | security_msg_msg_free(msg); | |
1970 | return rc; | |
20510f2f JM |
1971 | } |
1972 | ||
1973 | void security_msg_msg_free(struct msg_msg *msg) | |
1974 | { | |
f25fce3e | 1975 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
1976 | kfree(msg->security); |
1977 | msg->security = NULL; | |
20510f2f JM |
1978 | } |
1979 | ||
d8c6e854 | 1980 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 1981 | { |
ecd5f82e CS |
1982 | int rc = lsm_ipc_alloc(msq); |
1983 | ||
1984 | if (unlikely(rc)) | |
1985 | return rc; | |
1986 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
1987 | if (unlikely(rc)) | |
1988 | security_msg_queue_free(msq); | |
1989 | return rc; | |
20510f2f JM |
1990 | } |
1991 | ||
d8c6e854 | 1992 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 1993 | { |
f25fce3e | 1994 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
1995 | kfree(msq->security); |
1996 | msq->security = NULL; | |
20510f2f JM |
1997 | } |
1998 | ||
d8c6e854 | 1999 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 2000 | { |
f25fce3e | 2001 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
2002 | } |
2003 | ||
d8c6e854 | 2004 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 2005 | { |
f25fce3e | 2006 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
2007 | } |
2008 | ||
d8c6e854 | 2009 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
2010 | struct msg_msg *msg, int msqflg) |
2011 | { | |
f25fce3e | 2012 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
2013 | } |
2014 | ||
d8c6e854 | 2015 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
2016 | struct task_struct *target, long type, int mode) |
2017 | { | |
f25fce3e | 2018 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
2019 | } |
2020 | ||
7191adff | 2021 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 2022 | { |
ecd5f82e CS |
2023 | int rc = lsm_ipc_alloc(shp); |
2024 | ||
2025 | if (unlikely(rc)) | |
2026 | return rc; | |
2027 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
2028 | if (unlikely(rc)) | |
2029 | security_shm_free(shp); | |
2030 | return rc; | |
20510f2f JM |
2031 | } |
2032 | ||
7191adff | 2033 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 2034 | { |
f25fce3e | 2035 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
2036 | kfree(shp->security); |
2037 | shp->security = NULL; | |
20510f2f JM |
2038 | } |
2039 | ||
7191adff | 2040 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 2041 | { |
f25fce3e | 2042 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
2043 | } |
2044 | ||
7191adff | 2045 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 2046 | { |
f25fce3e | 2047 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
2048 | } |
2049 | ||
7191adff | 2050 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 2051 | { |
f25fce3e | 2052 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
2053 | } |
2054 | ||
aefad959 | 2055 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 2056 | { |
ecd5f82e CS |
2057 | int rc = lsm_ipc_alloc(sma); |
2058 | ||
2059 | if (unlikely(rc)) | |
2060 | return rc; | |
2061 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
2062 | if (unlikely(rc)) | |
2063 | security_sem_free(sma); | |
2064 | return rc; | |
20510f2f JM |
2065 | } |
2066 | ||
aefad959 | 2067 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 2068 | { |
f25fce3e | 2069 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
2070 | kfree(sma->security); |
2071 | sma->security = NULL; | |
20510f2f JM |
2072 | } |
2073 | ||
aefad959 | 2074 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 2075 | { |
f25fce3e | 2076 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
2077 | } |
2078 | ||
aefad959 | 2079 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 2080 | { |
f25fce3e | 2081 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
2082 | } |
2083 | ||
aefad959 | 2084 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
2085 | unsigned nsops, int alter) |
2086 | { | |
f25fce3e | 2087 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
2088 | } |
2089 | ||
2090 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
2091 | { | |
2092 | if (unlikely(inode && IS_PRIVATE(inode))) | |
2093 | return; | |
f25fce3e | 2094 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
2095 | } |
2096 | EXPORT_SYMBOL(security_d_instantiate); | |
2097 | ||
6d9c939d CS |
2098 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
2099 | char **value) | |
20510f2f | 2100 | { |
6d9c939d CS |
2101 | struct security_hook_list *hp; |
2102 | ||
2103 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
f17b27a2 | 2104 | if (lsm != NULL && strcmp(lsm, hp->lsmid->lsm)) |
6d9c939d CS |
2105 | continue; |
2106 | return hp->hook.getprocattr(p, name, value); | |
2107 | } | |
98e828a0 | 2108 | return LSM_RET_DEFAULT(getprocattr); |
20510f2f JM |
2109 | } |
2110 | ||
6d9c939d CS |
2111 | int security_setprocattr(const char *lsm, const char *name, void *value, |
2112 | size_t size) | |
20510f2f | 2113 | { |
6d9c939d CS |
2114 | struct security_hook_list *hp; |
2115 | ||
2116 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
f17b27a2 | 2117 | if (lsm != NULL && strcmp(lsm, hp->lsmid->lsm)) |
6d9c939d CS |
2118 | continue; |
2119 | return hp->hook.setprocattr(name, value, size); | |
2120 | } | |
98e828a0 | 2121 | return LSM_RET_DEFAULT(setprocattr); |
20510f2f JM |
2122 | } |
2123 | ||
2124 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2125 | { | |
f25fce3e | 2126 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2127 | } |
20510f2f | 2128 | |
746df9b5 DQ |
2129 | int security_ismaclabel(const char *name) |
2130 | { | |
f25fce3e | 2131 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2132 | } |
2133 | EXPORT_SYMBOL(security_ismaclabel); | |
2134 | ||
20510f2f JM |
2135 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
2136 | { | |
0550cfe8 KS |
2137 | struct security_hook_list *hp; |
2138 | int rc; | |
2139 | ||
2140 | /* | |
2141 | * Currently, only one LSM can implement secid_to_secctx (i.e this | |
2142 | * LSM hook is not "stackable"). | |
2143 | */ | |
2144 | hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) { | |
2145 | rc = hp->hook.secid_to_secctx(secid, secdata, seclen); | |
2146 | if (rc != LSM_RET_DEFAULT(secid_to_secctx)) | |
2147 | return rc; | |
2148 | } | |
2149 | ||
2150 | return LSM_RET_DEFAULT(secid_to_secctx); | |
20510f2f JM |
2151 | } |
2152 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2153 | ||
7bf570dc | 2154 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 2155 | { |
b1d9e6b0 | 2156 | *secid = 0; |
f25fce3e | 2157 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
2158 | } |
2159 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2160 | ||
20510f2f JM |
2161 | void security_release_secctx(char *secdata, u32 seclen) |
2162 | { | |
f25fce3e | 2163 | call_void_hook(release_secctx, secdata, seclen); |
20510f2f JM |
2164 | } |
2165 | EXPORT_SYMBOL(security_release_secctx); | |
2166 | ||
6f3be9f5 AG |
2167 | void security_inode_invalidate_secctx(struct inode *inode) |
2168 | { | |
2169 | call_void_hook(inode_invalidate_secctx, inode); | |
2170 | } | |
2171 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2172 | ||
1ee65e37 DQ |
2173 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2174 | { | |
f25fce3e | 2175 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2176 | } |
2177 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2178 | ||
2179 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2180 | { | |
f25fce3e | 2181 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2182 | } |
2183 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2184 | ||
2185 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
2186 | { | |
b1d9e6b0 | 2187 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
2188 | } |
2189 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2190 | ||
344fa64e DH |
2191 | #ifdef CONFIG_WATCH_QUEUE |
2192 | int security_post_notification(const struct cred *w_cred, | |
2193 | const struct cred *cred, | |
2194 | struct watch_notification *n) | |
2195 | { | |
2196 | return call_int_hook(post_notification, 0, w_cred, cred, n); | |
2197 | } | |
2198 | #endif /* CONFIG_WATCH_QUEUE */ | |
2199 | ||
998f5040 DH |
2200 | #ifdef CONFIG_KEY_NOTIFICATIONS |
2201 | int security_watch_key(struct key *key) | |
2202 | { | |
2203 | return call_int_hook(watch_key, 0, key); | |
2204 | } | |
2205 | #endif | |
2206 | ||
20510f2f JM |
2207 | #ifdef CONFIG_SECURITY_NETWORK |
2208 | ||
3610cda5 | 2209 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2210 | { |
f25fce3e | 2211 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2212 | } |
2213 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2214 | ||
2215 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2216 | { | |
f25fce3e | 2217 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2218 | } |
2219 | EXPORT_SYMBOL(security_unix_may_send); | |
2220 | ||
2221 | int security_socket_create(int family, int type, int protocol, int kern) | |
2222 | { | |
f25fce3e | 2223 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2224 | } |
2225 | ||
2226 | int security_socket_post_create(struct socket *sock, int family, | |
2227 | int type, int protocol, int kern) | |
2228 | { | |
f25fce3e | 2229 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2230 | protocol, kern); |
2231 | } | |
2232 | ||
aae7cfcb DH |
2233 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
2234 | { | |
2235 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
2236 | } | |
2237 | EXPORT_SYMBOL(security_socket_socketpair); | |
2238 | ||
20510f2f JM |
2239 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
2240 | { | |
f25fce3e | 2241 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2242 | } |
2243 | ||
2244 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2245 | { | |
f25fce3e | 2246 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2247 | } |
2248 | ||
2249 | int security_socket_listen(struct socket *sock, int backlog) | |
2250 | { | |
f25fce3e | 2251 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2252 | } |
2253 | ||
2254 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2255 | { | |
f25fce3e | 2256 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2257 | } |
2258 | ||
20510f2f JM |
2259 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2260 | { | |
f25fce3e | 2261 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2262 | } |
2263 | ||
2264 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2265 | int size, int flags) | |
2266 | { | |
f25fce3e | 2267 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2268 | } |
2269 | ||
2270 | int security_socket_getsockname(struct socket *sock) | |
2271 | { | |
f25fce3e | 2272 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2273 | } |
2274 | ||
2275 | int security_socket_getpeername(struct socket *sock) | |
2276 | { | |
f25fce3e | 2277 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2278 | } |
2279 | ||
2280 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2281 | { | |
f25fce3e | 2282 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2283 | } |
2284 | ||
2285 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2286 | { | |
f25fce3e | 2287 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2288 | } |
2289 | ||
2290 | int security_socket_shutdown(struct socket *sock, int how) | |
2291 | { | |
f25fce3e | 2292 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2293 | } |
2294 | ||
2295 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2296 | { | |
f25fce3e | 2297 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2298 | } |
2299 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2300 | ||
2301 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2302 | int __user *optlen, unsigned len) | |
2303 | { | |
b1d9e6b0 CS |
2304 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
2305 | optval, optlen, len); | |
20510f2f JM |
2306 | } |
2307 | ||
3d328ede CS |
2308 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, |
2309 | struct lsmblob *blob) | |
20510f2f | 2310 | { |
3d328ede CS |
2311 | struct security_hook_list *hp; |
2312 | int rc = -ENOPROTOOPT; | |
2313 | ||
2314 | hlist_for_each_entry(hp, &security_hook_heads.socket_getpeersec_dgram, | |
2315 | list) { | |
2316 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2317 | continue; | |
2318 | rc = hp->hook.socket_getpeersec_dgram(sock, skb, | |
2319 | &blob->secid[hp->lsmid->slot]); | |
2320 | if (rc != 0) | |
2321 | break; | |
2322 | } | |
2323 | return rc; | |
20510f2f JM |
2324 | } |
2325 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2326 | ||
2327 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2328 | { | |
12ddb08a CS |
2329 | int rc = lsm_sock_alloc(sk, priority); |
2330 | ||
2331 | if (unlikely(rc)) | |
2332 | return rc; | |
2333 | rc = call_int_hook(sk_alloc_security, 0, sk, family, priority); | |
2334 | if (unlikely(rc)) | |
2335 | security_sk_free(sk); | |
2336 | return rc; | |
20510f2f JM |
2337 | } |
2338 | ||
2339 | void security_sk_free(struct sock *sk) | |
2340 | { | |
f25fce3e | 2341 | call_void_hook(sk_free_security, sk); |
12ddb08a CS |
2342 | kfree(sk->sk_security); |
2343 | sk->sk_security = NULL; | |
20510f2f JM |
2344 | } |
2345 | ||
2346 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2347 | { | |
f25fce3e | 2348 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2349 | } |
6230c9b4 | 2350 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f | 2351 | |
3df98d79 | 2352 | void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic) |
20510f2f | 2353 | { |
3df98d79 | 2354 | call_void_hook(sk_getsecid, sk, &flic->flowic_secid); |
20510f2f JM |
2355 | } |
2356 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2357 | ||
3df98d79 PM |
2358 | void security_req_classify_flow(const struct request_sock *req, |
2359 | struct flowi_common *flic) | |
20510f2f | 2360 | { |
3df98d79 | 2361 | call_void_hook(req_classify_flow, req, flic); |
20510f2f JM |
2362 | } |
2363 | EXPORT_SYMBOL(security_req_classify_flow); | |
2364 | ||
2365 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2366 | { | |
f25fce3e | 2367 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2368 | } |
2369 | EXPORT_SYMBOL(security_sock_graft); | |
2370 | ||
41dd9596 | 2371 | int security_inet_conn_request(const struct sock *sk, |
20510f2f JM |
2372 | struct sk_buff *skb, struct request_sock *req) |
2373 | { | |
f25fce3e | 2374 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2375 | } |
2376 | EXPORT_SYMBOL(security_inet_conn_request); | |
2377 | ||
2378 | void security_inet_csk_clone(struct sock *newsk, | |
2379 | const struct request_sock *req) | |
2380 | { | |
f25fce3e | 2381 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2382 | } |
2383 | ||
2384 | void security_inet_conn_established(struct sock *sk, | |
2385 | struct sk_buff *skb) | |
2386 | { | |
f25fce3e | 2387 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2388 | } |
72e89f50 | 2389 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2390 | |
2606fd1f EP |
2391 | int security_secmark_relabel_packet(u32 secid) |
2392 | { | |
f25fce3e | 2393 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2394 | } |
2395 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2396 | ||
2397 | void security_secmark_refcount_inc(void) | |
2398 | { | |
f25fce3e | 2399 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2400 | } |
2401 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2402 | ||
2403 | void security_secmark_refcount_dec(void) | |
2404 | { | |
f25fce3e | 2405 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2406 | } |
2407 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2408 | ||
5dbbaf2d PM |
2409 | int security_tun_dev_alloc_security(void **security) |
2410 | { | |
f25fce3e | 2411 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2412 | } |
2413 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2414 | ||
2415 | void security_tun_dev_free_security(void *security) | |
2416 | { | |
f25fce3e | 2417 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2418 | } |
2419 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2420 | ||
2b980dbd PM |
2421 | int security_tun_dev_create(void) |
2422 | { | |
f25fce3e | 2423 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2424 | } |
2425 | EXPORT_SYMBOL(security_tun_dev_create); | |
2426 | ||
5dbbaf2d | 2427 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2428 | { |
f25fce3e | 2429 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2430 | } |
5dbbaf2d | 2431 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2432 | |
5dbbaf2d | 2433 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2434 | { |
f25fce3e | 2435 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2436 | } |
2437 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2438 | ||
5dbbaf2d PM |
2439 | int security_tun_dev_open(void *security) |
2440 | { | |
f25fce3e | 2441 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2442 | } |
2443 | EXPORT_SYMBOL(security_tun_dev_open); | |
2444 | ||
72e89f50 RH |
2445 | int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) |
2446 | { | |
2447 | return call_int_hook(sctp_assoc_request, 0, ep, skb); | |
2448 | } | |
2449 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2450 | ||
2451 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2452 | struct sockaddr *address, int addrlen) | |
2453 | { | |
2454 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2455 | address, addrlen); | |
2456 | } | |
2457 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2458 | ||
2459 | void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, | |
2460 | struct sock *newsk) | |
2461 | { | |
2462 | call_void_hook(sctp_sk_clone, ep, sk, newsk); | |
2463 | } | |
2464 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2465 | ||
20510f2f JM |
2466 | #endif /* CONFIG_SECURITY_NETWORK */ |
2467 | ||
d291f1a6 DJ |
2468 | #ifdef CONFIG_SECURITY_INFINIBAND |
2469 | ||
2470 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2471 | { | |
2472 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2473 | } | |
2474 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2475 | ||
47a2b338 DJ |
2476 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2477 | { | |
2478 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2479 | } | |
2480 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2481 | ||
d291f1a6 DJ |
2482 | int security_ib_alloc_security(void **sec) |
2483 | { | |
2484 | return call_int_hook(ib_alloc_security, 0, sec); | |
2485 | } | |
2486 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2487 | ||
2488 | void security_ib_free_security(void *sec) | |
2489 | { | |
2490 | call_void_hook(ib_free_security, sec); | |
2491 | } | |
2492 | EXPORT_SYMBOL(security_ib_free_security); | |
2493 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2494 | ||
20510f2f JM |
2495 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2496 | ||
52a4c640 NA |
2497 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2498 | struct xfrm_user_sec_ctx *sec_ctx, | |
2499 | gfp_t gfp) | |
20510f2f | 2500 | { |
f25fce3e | 2501 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2502 | } |
2503 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2504 | ||
03e1ad7b PM |
2505 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2506 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2507 | { |
f25fce3e | 2508 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2509 | } |
2510 | ||
03e1ad7b | 2511 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2512 | { |
f25fce3e | 2513 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2514 | } |
2515 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2516 | ||
03e1ad7b | 2517 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2518 | { |
f25fce3e | 2519 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2520 | } |
2521 | ||
2e5aa866 PM |
2522 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2523 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2524 | { |
f25fce3e | 2525 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2526 | } |
2527 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2528 | ||
2529 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2530 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2531 | { | |
f25fce3e | 2532 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2533 | } |
2534 | ||
2535 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2536 | { | |
f25fce3e | 2537 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2538 | } |
2539 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2540 | ||
2541 | void security_xfrm_state_free(struct xfrm_state *x) | |
2542 | { | |
f25fce3e | 2543 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2544 | } |
2545 | ||
8a922805 | 2546 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) |
20510f2f | 2547 | { |
8a922805 | 2548 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid); |
20510f2f JM |
2549 | } |
2550 | ||
2551 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 | 2552 | struct xfrm_policy *xp, |
3df98d79 | 2553 | const struct flowi_common *flic) |
20510f2f | 2554 | { |
b1d9e6b0 | 2555 | struct security_hook_list *hp; |
98e828a0 | 2556 | int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match); |
b1d9e6b0 CS |
2557 | |
2558 | /* | |
2559 | * Since this function is expected to return 0 or 1, the judgment | |
2560 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2561 | * we can use the first LSM's judgment because currently only SELinux | |
2562 | * supplies this call. | |
2563 | * | |
2564 | * For speed optimization, we explicitly break the loop rather than | |
2565 | * using the macro | |
2566 | */ | |
df0ce173 | 2567 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 | 2568 | list) { |
3df98d79 | 2569 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic); |
b1d9e6b0 CS |
2570 | break; |
2571 | } | |
2572 | return rc; | |
20510f2f JM |
2573 | } |
2574 | ||
2575 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2576 | { | |
f25fce3e | 2577 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2578 | } |
2579 | ||
3df98d79 | 2580 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic) |
20510f2f | 2581 | { |
3df98d79 | 2582 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid, |
f25fce3e | 2583 | 0); |
20510f2f JM |
2584 | |
2585 | BUG_ON(rc); | |
2586 | } | |
2587 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2588 | ||
2589 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2590 | ||
2591 | #ifdef CONFIG_KEYS | |
2592 | ||
d84f4f99 DH |
2593 | int security_key_alloc(struct key *key, const struct cred *cred, |
2594 | unsigned long flags) | |
20510f2f | 2595 | { |
f25fce3e | 2596 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2597 | } |
2598 | ||
2599 | void security_key_free(struct key *key) | |
2600 | { | |
f25fce3e | 2601 | call_void_hook(key_free, key); |
20510f2f JM |
2602 | } |
2603 | ||
8c0637e9 DH |
2604 | int security_key_permission(key_ref_t key_ref, const struct cred *cred, |
2605 | enum key_need_perm need_perm) | |
20510f2f | 2606 | { |
8c0637e9 | 2607 | return call_int_hook(key_permission, 0, key_ref, cred, need_perm); |
20510f2f JM |
2608 | } |
2609 | ||
70a5bb72 DH |
2610 | int security_key_getsecurity(struct key *key, char **_buffer) |
2611 | { | |
b1d9e6b0 | 2612 | *_buffer = NULL; |
f25fce3e | 2613 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2614 | } |
2615 | ||
20510f2f | 2616 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2617 | |
2618 | #ifdef CONFIG_AUDIT | |
2619 | ||
2620 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2621 | { | |
f17b27a2 CS |
2622 | struct security_hook_list *hp; |
2623 | bool one_is_good = false; | |
2624 | int rc = 0; | |
2625 | int trc; | |
2626 | ||
2627 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_init, list) { | |
2628 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2629 | continue; | |
2630 | trc = hp->hook.audit_rule_init(field, op, rulestr, | |
2631 | &lsmrule[hp->lsmid->slot]); | |
2632 | if (trc == 0) | |
2633 | one_is_good = true; | |
2634 | else | |
2635 | rc = trc; | |
2636 | } | |
2637 | if (one_is_good) | |
2638 | return 0; | |
2639 | return rc; | |
03d37d25 AD |
2640 | } |
2641 | ||
2642 | int security_audit_rule_known(struct audit_krule *krule) | |
2643 | { | |
f25fce3e | 2644 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2645 | } |
2646 | ||
f17b27a2 | 2647 | void security_audit_rule_free(void **lsmrule) |
03d37d25 | 2648 | { |
f17b27a2 CS |
2649 | struct security_hook_list *hp; |
2650 | ||
2651 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_free, list) { | |
2652 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2653 | continue; | |
eb182194 CS |
2654 | if (lsmrule[hp->lsmid->slot] == NULL) |
2655 | continue; | |
f17b27a2 CS |
2656 | hp->hook.audit_rule_free(lsmrule[hp->lsmid->slot]); |
2657 | } | |
03d37d25 AD |
2658 | } |
2659 | ||
eb182194 CS |
2660 | int security_audit_rule_match(struct lsmblob *blob, u32 field, u32 op, |
2661 | void **lsmrule) | |
03d37d25 | 2662 | { |
f17b27a2 CS |
2663 | struct security_hook_list *hp; |
2664 | int rc; | |
2665 | ||
2666 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_match, list) { | |
2667 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2668 | continue; | |
eb182194 CS |
2669 | if (lsmrule[hp->lsmid->slot] == NULL) |
2670 | continue; | |
2671 | rc = hp->hook.audit_rule_match(blob->secid[hp->lsmid->slot], | |
2672 | field, op, | |
f17b27a2 CS |
2673 | &lsmrule[hp->lsmid->slot]); |
2674 | if (rc) | |
2675 | return rc; | |
2676 | } | |
2677 | return 0; | |
03d37d25 | 2678 | } |
b1d9e6b0 | 2679 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2680 | |
2681 | #ifdef CONFIG_BPF_SYSCALL | |
2682 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2683 | { | |
2684 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2685 | } | |
2686 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2687 | { | |
2688 | return call_int_hook(bpf_map, 0, map, fmode); | |
2689 | } | |
2690 | int security_bpf_prog(struct bpf_prog *prog) | |
2691 | { | |
2692 | return call_int_hook(bpf_prog, 0, prog); | |
2693 | } | |
2694 | int security_bpf_map_alloc(struct bpf_map *map) | |
2695 | { | |
2696 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2697 | } | |
2698 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2699 | { | |
2700 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2701 | } | |
2702 | void security_bpf_map_free(struct bpf_map *map) | |
2703 | { | |
2704 | call_void_hook(bpf_map_free_security, map); | |
2705 | } | |
2706 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2707 | { | |
2708 | call_void_hook(bpf_prog_free_security, aux); | |
2709 | } | |
2710 | #endif /* CONFIG_BPF_SYSCALL */ | |
9e47d31d MG |
2711 | |
2712 | int security_locked_down(enum lockdown_reason what) | |
2713 | { | |
2714 | return call_int_hook(locked_down, 0, what); | |
2715 | } | |
2716 | EXPORT_SYMBOL(security_locked_down); | |
da97e184 JFG |
2717 | |
2718 | #ifdef CONFIG_PERF_EVENTS | |
2719 | int security_perf_event_open(struct perf_event_attr *attr, int type) | |
2720 | { | |
2721 | return call_int_hook(perf_event_open, 0, attr, type); | |
2722 | } | |
2723 | ||
2724 | int security_perf_event_alloc(struct perf_event *event) | |
2725 | { | |
2726 | return call_int_hook(perf_event_alloc, 0, event); | |
2727 | } | |
2728 | ||
2729 | void security_perf_event_free(struct perf_event *event) | |
2730 | { | |
2731 | call_void_hook(perf_event_free, event); | |
2732 | } | |
2733 | ||
2734 | int security_perf_event_read(struct perf_event *event) | |
2735 | { | |
2736 | return call_int_hook(perf_event_read, 0, event); | |
2737 | } | |
2738 | ||
2739 | int security_perf_event_write(struct perf_event *event) | |
2740 | { | |
2741 | return call_int_hook(perf_event_write, 0, event); | |
2742 | } | |
2743 | #endif /* CONFIG_PERF_EVENTS */ |