]>
Commit | Line | Data |
---|---|---|
2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Security plug functions | |
4 | * | |
5 | * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> | |
6 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
7 | * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> | |
d291f1a6 | 8 | * Copyright (C) 2016 Mellanox Technologies |
1da177e4 LT |
9 | */ |
10 | ||
9b8c7c14 KC |
11 | #define pr_fmt(fmt) "LSM: " fmt |
12 | ||
afdb09c7 | 13 | #include <linux/bpf.h> |
c59ede7b | 14 | #include <linux/capability.h> |
d47be3df | 15 | #include <linux/dcache.h> |
876979c9 | 16 | #include <linux/export.h> |
1da177e4 LT |
17 | #include <linux/init.h> |
18 | #include <linux/kernel.h> | |
b89999d0 | 19 | #include <linux/kernel_read_file.h> |
3c4ed7bd | 20 | #include <linux/lsm_hooks.h> |
f381c272 | 21 | #include <linux/integrity.h> |
6c21a7fb | 22 | #include <linux/ima.h> |
3e1be52d | 23 | #include <linux/evm.h> |
40401530 | 24 | #include <linux/fsnotify.h> |
8b3ec681 AV |
25 | #include <linux/mman.h> |
26 | #include <linux/mount.h> | |
27 | #include <linux/personality.h> | |
75331a59 | 28 | #include <linux/backing-dev.h> |
3bb857e4 | 29 | #include <linux/string.h> |
ecd5f82e | 30 | #include <linux/msg.h> |
40401530 | 31 | #include <net/flow.h> |
716eca8c | 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", | |
62 | [LOCKDOWN_INTEGRITY_MAX] = "integrity", | |
63 | [LOCKDOWN_KCORE] = "/proc/kcore access", | |
64 | [LOCKDOWN_KPROBES] = "use of kprobes", | |
65 | [LOCKDOWN_BPF_READ] = "use of bpf to read kernel RAM", | |
66 | [LOCKDOWN_PERF] = "unsafe use of perf", | |
67 | [LOCKDOWN_TRACEFS] = "use of tracefs", | |
68 | [LOCKDOWN_XMON_RW] = "xmon read and write access", | |
c7a5899e | 69 | [LOCKDOWN_XFRM_SECRET] = "xfrm SA secret", |
59438b46 SS |
70 | [LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality", |
71 | }; | |
72 | ||
3dfc9b02 | 73 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
42df744c | 74 | static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain); |
8f408ab6 | 75 | |
33bf60ca | 76 | static struct kmem_cache *lsm_file_cache; |
afb1cbe3 | 77 | static struct kmem_cache *lsm_inode_cache; |
33bf60ca | 78 | |
d69dece5 | 79 | char *lsm_names; |
bbd3662a CS |
80 | static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init; |
81 | ||
076c54c5 | 82 | /* Boot-time LSM user choice */ |
79f7865d | 83 | static __initdata const char *chosen_lsm_order; |
5ef4e419 | 84 | static __initdata const char *chosen_major_lsm; |
1da177e4 | 85 | |
13e735c0 KC |
86 | static __initconst const char * const builtin_lsm_order = CONFIG_LSM; |
87 | ||
2d4d5119 KC |
88 | /* Ordered list of LSMs to initialize. */ |
89 | static __initdata struct lsm_info **ordered_lsms; | |
14bd99c8 | 90 | static __initdata struct lsm_info *exclusive; |
2d4d5119 | 91 | |
9b8c7c14 KC |
92 | static __initdata bool debug; |
93 | #define init_debug(...) \ | |
94 | do { \ | |
95 | if (debug) \ | |
96 | pr_info(__VA_ARGS__); \ | |
97 | } while (0) | |
98 | ||
f4941d75 KC |
99 | static bool __init is_enabled(struct lsm_info *lsm) |
100 | { | |
a8027fb0 KC |
101 | if (!lsm->enabled) |
102 | return false; | |
f4941d75 | 103 | |
a8027fb0 | 104 | return *lsm->enabled; |
f4941d75 KC |
105 | } |
106 | ||
107 | /* Mark an LSM's enabled flag. */ | |
108 | static int lsm_enabled_true __initdata = 1; | |
109 | static int lsm_enabled_false __initdata = 0; | |
110 | static void __init set_enabled(struct lsm_info *lsm, bool enabled) | |
111 | { | |
112 | /* | |
113 | * When an LSM hasn't configured an enable variable, we can use | |
114 | * a hard-coded location for storing the default enabled state. | |
115 | */ | |
116 | if (!lsm->enabled) { | |
117 | if (enabled) | |
118 | lsm->enabled = &lsm_enabled_true; | |
119 | else | |
120 | lsm->enabled = &lsm_enabled_false; | |
121 | } else if (lsm->enabled == &lsm_enabled_true) { | |
122 | if (!enabled) | |
123 | lsm->enabled = &lsm_enabled_false; | |
124 | } else if (lsm->enabled == &lsm_enabled_false) { | |
125 | if (enabled) | |
126 | lsm->enabled = &lsm_enabled_true; | |
127 | } else { | |
128 | *lsm->enabled = enabled; | |
129 | } | |
130 | } | |
131 | ||
2d4d5119 KC |
132 | /* Is an LSM already listed in the ordered LSMs list? */ |
133 | static bool __init exists_ordered_lsm(struct lsm_info *lsm) | |
134 | { | |
135 | struct lsm_info **check; | |
136 | ||
137 | for (check = ordered_lsms; *check; check++) | |
138 | if (*check == lsm) | |
139 | return true; | |
140 | ||
141 | return false; | |
142 | } | |
143 | ||
144 | /* Append an LSM to the list of ordered LSMs to initialize. */ | |
145 | static int last_lsm __initdata; | |
146 | static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from) | |
147 | { | |
148 | /* Ignore duplicate selections. */ | |
149 | if (exists_ordered_lsm(lsm)) | |
150 | return; | |
151 | ||
152 | if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from)) | |
153 | return; | |
154 | ||
a8027fb0 KC |
155 | /* Enable this LSM, if it is not already set. */ |
156 | if (!lsm->enabled) | |
157 | lsm->enabled = &lsm_enabled_true; | |
2d4d5119 | 158 | ordered_lsms[last_lsm++] = lsm; |
a8027fb0 | 159 | |
2d4d5119 KC |
160 | init_debug("%s ordering: %s (%sabled)\n", from, lsm->name, |
161 | is_enabled(lsm) ? "en" : "dis"); | |
162 | } | |
163 | ||
f4941d75 KC |
164 | /* Is an LSM allowed to be initialized? */ |
165 | static bool __init lsm_allowed(struct lsm_info *lsm) | |
166 | { | |
167 | /* Skip if the LSM is disabled. */ | |
168 | if (!is_enabled(lsm)) | |
169 | return false; | |
170 | ||
14bd99c8 KC |
171 | /* Not allowed if another exclusive LSM already initialized. */ |
172 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) { | |
173 | init_debug("exclusive disabled: %s\n", lsm->name); | |
174 | return false; | |
175 | } | |
176 | ||
f4941d75 KC |
177 | return true; |
178 | } | |
179 | ||
bbd3662a CS |
180 | static void __init lsm_set_blob_size(int *need, int *lbs) |
181 | { | |
182 | int offset; | |
183 | ||
184 | if (*need > 0) { | |
185 | offset = *lbs; | |
186 | *lbs += *need; | |
187 | *need = offset; | |
188 | } | |
189 | } | |
190 | ||
191 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
192 | { | |
193 | if (!needed) | |
194 | return; | |
195 | ||
196 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 197 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
198 | /* |
199 | * The inode blob gets an rcu_head in addition to | |
200 | * what the modules might need. | |
201 | */ | |
202 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
203 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
204 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
205 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
206 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
716eca8c | 207 | lsm_set_blob_size(&needed->lbs_sock, &blob_sizes.lbs_sock); |
f4ad8f2c | 208 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
209 | } |
210 | ||
d8e9bbd4 KC |
211 | /* Prepare LSM for initialization. */ |
212 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
213 | { |
214 | int enabled = lsm_allowed(lsm); | |
215 | ||
216 | /* Record enablement (to handle any following exclusive LSMs). */ | |
217 | set_enabled(lsm, enabled); | |
218 | ||
d8e9bbd4 | 219 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 220 | if (enabled) { |
14bd99c8 KC |
221 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
222 | exclusive = lsm; | |
223 | init_debug("exclusive chosen: %s\n", lsm->name); | |
224 | } | |
bbd3662a CS |
225 | |
226 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
227 | } |
228 | } | |
229 | ||
230 | /* Initialize a given LSM, if it is enabled. */ | |
231 | static void __init initialize_lsm(struct lsm_info *lsm) | |
232 | { | |
233 | if (is_enabled(lsm)) { | |
234 | int ret; | |
14bd99c8 | 235 | |
f4941d75 KC |
236 | init_debug("initializing %s\n", lsm->name); |
237 | ret = lsm->init(); | |
238 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
239 | } | |
240 | } | |
241 | ||
13e735c0 | 242 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 243 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
244 | { |
245 | struct lsm_info *lsm; | |
13e735c0 KC |
246 | char *sep, *name, *next; |
247 | ||
e2bc445b KC |
248 | /* LSM_ORDER_FIRST is always first. */ |
249 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
250 | if (lsm->order == LSM_ORDER_FIRST) | |
251 | append_ordered_lsm(lsm, "first"); | |
252 | } | |
253 | ||
7e611486 | 254 | /* Process "security=", if given. */ |
7e611486 KC |
255 | if (chosen_major_lsm) { |
256 | struct lsm_info *major; | |
257 | ||
258 | /* | |
259 | * To match the original "security=" behavior, this | |
260 | * explicitly does NOT fallback to another Legacy Major | |
261 | * if the selected one was separately disabled: disable | |
262 | * all non-matching Legacy Major LSMs. | |
263 | */ | |
264 | for (major = __start_lsm_info; major < __end_lsm_info; | |
265 | major++) { | |
266 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
267 | strcmp(major->name, chosen_major_lsm) != 0) { | |
268 | set_enabled(major, false); | |
269 | init_debug("security=%s disabled: %s\n", | |
270 | chosen_major_lsm, major->name); | |
271 | } | |
272 | } | |
273 | } | |
5ef4e419 | 274 | |
13e735c0 KC |
275 | sep = kstrdup(order, GFP_KERNEL); |
276 | next = sep; | |
277 | /* Walk the list, looking for matching LSMs. */ | |
278 | while ((name = strsep(&next, ",")) != NULL) { | |
279 | bool found = false; | |
280 | ||
281 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
282 | if (lsm->order == LSM_ORDER_MUTABLE && |
283 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
284 | append_ordered_lsm(lsm, origin); |
285 | found = true; | |
286 | } | |
287 | } | |
288 | ||
289 | if (!found) | |
290 | init_debug("%s ignored: %s\n", origin, name); | |
657d910b | 291 | } |
c91d8106 CS |
292 | |
293 | /* Process "security=", if given. */ | |
294 | if (chosen_major_lsm) { | |
295 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
296 | if (exists_ordered_lsm(lsm)) | |
297 | continue; | |
298 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
299 | append_ordered_lsm(lsm, "security="); | |
300 | } | |
301 | } | |
302 | ||
303 | /* Disable all LSMs not in the ordered list. */ | |
304 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
305 | if (exists_ordered_lsm(lsm)) | |
306 | continue; | |
307 | set_enabled(lsm, false); | |
308 | init_debug("%s disabled: %s\n", origin, lsm->name); | |
309 | } | |
310 | ||
13e735c0 | 311 | kfree(sep); |
657d910b KC |
312 | } |
313 | ||
1cfb2a51 TH |
314 | static void __init lsm_early_cred(struct cred *cred); |
315 | static void __init lsm_early_task(struct task_struct *task); | |
316 | ||
e6b1db98 MG |
317 | static int lsm_append(const char *new, char **result); |
318 | ||
2d4d5119 KC |
319 | static void __init ordered_lsm_init(void) |
320 | { | |
321 | struct lsm_info **lsm; | |
322 | ||
323 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
324 | GFP_KERNEL); | |
325 | ||
89a9684e KC |
326 | if (chosen_lsm_order) { |
327 | if (chosen_major_lsm) { | |
328 | pr_info("security= is ignored because it is superseded by lsm=\n"); | |
329 | chosen_major_lsm = NULL; | |
330 | } | |
79f7865d | 331 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 332 | } else |
79f7865d | 333 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
334 | |
335 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
336 | prepare_lsm(*lsm); |
337 | ||
bbd3662a | 338 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
33bf60ca | 339 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); |
afb1cbe3 | 340 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); |
ecd5f82e CS |
341 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); |
342 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
716eca8c | 343 | init_debug("sock blob size = %d\n", blob_sizes.lbs_sock); |
f4ad8f2c | 344 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); |
f4d92e4c | 345 | init_debug("lsmblob size = %zu\n", sizeof(struct lsmblob)); |
33bf60ca CS |
346 | |
347 | /* | |
348 | * Create any kmem_caches needed for blobs | |
349 | */ | |
350 | if (blob_sizes.lbs_file) | |
351 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
352 | blob_sizes.lbs_file, 0, | |
353 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
354 | if (blob_sizes.lbs_inode) |
355 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
356 | blob_sizes.lbs_inode, 0, | |
357 | SLAB_PANIC, NULL); | |
bbd3662a | 358 | |
1cfb2a51 TH |
359 | lsm_early_cred((struct cred *) current->cred); |
360 | lsm_early_task(current); | |
d8e9bbd4 KC |
361 | for (lsm = ordered_lsms; *lsm; lsm++) |
362 | initialize_lsm(*lsm); | |
2d4d5119 KC |
363 | |
364 | kfree(ordered_lsms); | |
365 | } | |
366 | ||
e6b1db98 MG |
367 | int __init early_security_init(void) |
368 | { | |
369 | int i; | |
370 | struct hlist_head *list = (struct hlist_head *) &security_hook_heads; | |
371 | struct lsm_info *lsm; | |
372 | ||
373 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head); | |
374 | i++) | |
375 | INIT_HLIST_HEAD(&list[i]); | |
376 | ||
377 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
378 | if (!lsm->enabled) | |
379 | lsm->enabled = &lsm_enabled_true; | |
380 | prepare_lsm(lsm); | |
381 | initialize_lsm(lsm); | |
382 | } | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
1da177e4 LT |
387 | /** |
388 | * security_init - initializes the security framework | |
389 | * | |
390 | * This should be called early in the kernel initialization sequence. | |
391 | */ | |
392 | int __init security_init(void) | |
393 | { | |
e6b1db98 | 394 | struct lsm_info *lsm; |
3dfc9b02 | 395 | |
98d29170 KC |
396 | pr_info("Security Framework initializing\n"); |
397 | ||
e6b1db98 MG |
398 | /* |
399 | * Append the names of the early LSM modules now that kmalloc() is | |
400 | * available | |
401 | */ | |
402 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
403 | if (lsm->enabled) | |
404 | lsm_append(lsm->name, &lsm_names); | |
405 | } | |
1da177e4 | 406 | |
657d910b KC |
407 | /* Load LSMs in specified order. */ |
408 | ordered_lsm_init(); | |
409 | ||
1da177e4 LT |
410 | return 0; |
411 | } | |
412 | ||
076c54c5 | 413 | /* Save user chosen LSM */ |
5ef4e419 | 414 | static int __init choose_major_lsm(char *str) |
076c54c5 | 415 | { |
5ef4e419 | 416 | chosen_major_lsm = str; |
076c54c5 AD |
417 | return 1; |
418 | } | |
5ef4e419 | 419 | __setup("security=", choose_major_lsm); |
076c54c5 | 420 | |
79f7865d KC |
421 | /* Explicitly choose LSM initialization order. */ |
422 | static int __init choose_lsm_order(char *str) | |
423 | { | |
424 | chosen_lsm_order = str; | |
425 | return 1; | |
426 | } | |
427 | __setup("lsm=", choose_lsm_order); | |
428 | ||
9b8c7c14 KC |
429 | /* Enable LSM order debugging. */ |
430 | static int __init enable_debug(char *str) | |
431 | { | |
432 | debug = true; | |
433 | return 1; | |
434 | } | |
435 | __setup("lsm.debug", enable_debug); | |
436 | ||
3bb857e4 MS |
437 | static bool match_last_lsm(const char *list, const char *lsm) |
438 | { | |
439 | const char *last; | |
440 | ||
441 | if (WARN_ON(!list || !lsm)) | |
442 | return false; | |
443 | last = strrchr(list, ','); | |
444 | if (last) | |
445 | /* Pass the comma, strcmp() will check for '\0' */ | |
446 | last++; | |
447 | else | |
448 | last = list; | |
449 | return !strcmp(last, lsm); | |
450 | } | |
451 | ||
e6b1db98 | 452 | static int lsm_append(const char *new, char **result) |
d69dece5 CS |
453 | { |
454 | char *cp; | |
455 | ||
456 | if (*result == NULL) { | |
457 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
458 | if (*result == NULL) |
459 | return -ENOMEM; | |
d69dece5 | 460 | } else { |
3bb857e4 MS |
461 | /* Check if it is the last registered name */ |
462 | if (match_last_lsm(*result, new)) | |
463 | return 0; | |
d69dece5 CS |
464 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
465 | if (cp == NULL) | |
466 | return -ENOMEM; | |
467 | kfree(*result); | |
468 | *result = cp; | |
469 | } | |
470 | return 0; | |
471 | } | |
472 | ||
f4d92e4c CS |
473 | /* |
474 | * Current index to use while initializing the lsmblob secid list. | |
475 | */ | |
476 | static int lsm_slot __lsm_ro_after_init; | |
477 | ||
d69dece5 CS |
478 | /** |
479 | * security_add_hooks - Add a modules hooks to the hook lists. | |
480 | * @hooks: the hooks to add | |
481 | * @count: the number of hooks to add | |
f4d92e4c | 482 | * @lsmid: the the identification information for the security module |
d69dece5 CS |
483 | * |
484 | * Each LSM has to register its hooks with the infrastructure. | |
f4d92e4c CS |
485 | * If the LSM is using hooks that export secids allocate a slot |
486 | * for it in the lsmblob. | |
d69dece5 CS |
487 | */ |
488 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
f4d92e4c | 489 | struct lsm_id *lsmid) |
d69dece5 CS |
490 | { |
491 | int i; | |
492 | ||
f4d92e4c CS |
493 | if (lsmid->slot == LSMBLOB_NEEDED) { |
494 | if (lsm_slot >= LSMBLOB_ENTRIES) | |
495 | panic("%s Too many LSMs registered.\n", __func__); | |
496 | lsmid->slot = lsm_slot++; | |
497 | init_debug("%s assigned lsmblob slot %d\n", lsmid->lsm, | |
498 | lsmid->slot); | |
499 | } | |
500 | ||
d69dece5 | 501 | for (i = 0; i < count; i++) { |
f4d92e4c | 502 | hooks[i].lsmid = lsmid; |
df0ce173 | 503 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
d69dece5 | 504 | } |
e6b1db98 MG |
505 | |
506 | /* | |
507 | * Don't try to append during early_security_init(), we'll come back | |
508 | * and fix this up afterwards. | |
509 | */ | |
510 | if (slab_is_available()) { | |
f4d92e4c | 511 | if (lsm_append(lsmid->lsm, &lsm_names) < 0) |
e6b1db98 MG |
512 | panic("%s - Cannot get early memory.\n", __func__); |
513 | } | |
d69dece5 CS |
514 | } |
515 | ||
42df744c | 516 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 517 | { |
42df744c JK |
518 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
519 | event, data); | |
8f408ab6 | 520 | } |
42df744c | 521 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 522 | |
42df744c | 523 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 524 | { |
42df744c JK |
525 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
526 | nb); | |
8f408ab6 | 527 | } |
42df744c | 528 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 529 | |
42df744c | 530 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 531 | { |
42df744c JK |
532 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
533 | nb); | |
8f408ab6 | 534 | } |
42df744c | 535 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 536 | |
bbd3662a CS |
537 | /** |
538 | * lsm_cred_alloc - allocate a composite cred blob | |
539 | * @cred: the cred that needs a blob | |
540 | * @gfp: allocation type | |
541 | * | |
542 | * Allocate the cred blob for all the modules | |
543 | * | |
544 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
545 | */ | |
546 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
547 | { | |
548 | if (blob_sizes.lbs_cred == 0) { | |
549 | cred->security = NULL; | |
550 | return 0; | |
551 | } | |
552 | ||
553 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
554 | if (cred->security == NULL) | |
555 | return -ENOMEM; | |
556 | return 0; | |
557 | } | |
558 | ||
559 | /** | |
560 | * lsm_early_cred - during initialization allocate a composite cred blob | |
561 | * @cred: the cred that needs a blob | |
562 | * | |
1cfb2a51 | 563 | * Allocate the cred blob for all the modules |
bbd3662a | 564 | */ |
1cfb2a51 | 565 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 566 | { |
1cfb2a51 | 567 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 568 | |
bbd3662a CS |
569 | if (rc) |
570 | panic("%s: Early cred alloc failed.\n", __func__); | |
571 | } | |
572 | ||
33bf60ca CS |
573 | /** |
574 | * lsm_file_alloc - allocate a composite file blob | |
575 | * @file: the file that needs a blob | |
576 | * | |
577 | * Allocate the file blob for all the modules | |
578 | * | |
579 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
580 | */ | |
581 | static int lsm_file_alloc(struct file *file) | |
582 | { | |
583 | if (!lsm_file_cache) { | |
584 | file->f_security = NULL; | |
585 | return 0; | |
586 | } | |
587 | ||
588 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
589 | if (file->f_security == NULL) | |
590 | return -ENOMEM; | |
591 | return 0; | |
592 | } | |
593 | ||
afb1cbe3 CS |
594 | /** |
595 | * lsm_inode_alloc - allocate a composite inode blob | |
596 | * @inode: the inode that needs a blob | |
597 | * | |
598 | * Allocate the inode blob for all the modules | |
599 | * | |
600 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
601 | */ | |
602 | int lsm_inode_alloc(struct inode *inode) | |
603 | { | |
604 | if (!lsm_inode_cache) { | |
605 | inode->i_security = NULL; | |
606 | return 0; | |
607 | } | |
608 | ||
609 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
610 | if (inode->i_security == NULL) | |
611 | return -ENOMEM; | |
612 | return 0; | |
613 | } | |
614 | ||
f4ad8f2c CS |
615 | /** |
616 | * lsm_task_alloc - allocate a composite task blob | |
617 | * @task: the task that needs a blob | |
618 | * | |
619 | * Allocate the task blob for all the modules | |
620 | * | |
621 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
622 | */ | |
3e8c7367 | 623 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c CS |
624 | { |
625 | if (blob_sizes.lbs_task == 0) { | |
626 | task->security = NULL; | |
627 | return 0; | |
628 | } | |
629 | ||
630 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
631 | if (task->security == NULL) | |
632 | return -ENOMEM; | |
633 | return 0; | |
634 | } | |
635 | ||
ecd5f82e CS |
636 | /** |
637 | * lsm_ipc_alloc - allocate a composite ipc blob | |
638 | * @kip: the ipc that needs a blob | |
639 | * | |
640 | * Allocate the ipc blob for all the modules | |
641 | * | |
642 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
643 | */ | |
3e8c7367 | 644 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
645 | { |
646 | if (blob_sizes.lbs_ipc == 0) { | |
647 | kip->security = NULL; | |
648 | return 0; | |
649 | } | |
650 | ||
651 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
652 | if (kip->security == NULL) | |
653 | return -ENOMEM; | |
654 | return 0; | |
655 | } | |
656 | ||
657 | /** | |
658 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
659 | * @mp: the msg_msg that needs a blob | |
660 | * | |
661 | * Allocate the ipc blob for all the modules | |
662 | * | |
663 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
664 | */ | |
3e8c7367 | 665 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
666 | { |
667 | if (blob_sizes.lbs_msg_msg == 0) { | |
668 | mp->security = NULL; | |
669 | return 0; | |
670 | } | |
671 | ||
672 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
673 | if (mp->security == NULL) | |
674 | return -ENOMEM; | |
675 | return 0; | |
676 | } | |
677 | ||
716eca8c CS |
678 | /** |
679 | * lsm_sock_alloc - allocate a composite sock blob | |
680 | * @sock: the sock that needs a blob | |
681 | * @priority: allocation mode | |
682 | * | |
683 | * Allocate the sock blob for all the modules | |
684 | * | |
685 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
686 | */ | |
687 | static int lsm_sock_alloc(struct sock *sock, gfp_t priority) | |
688 | { | |
689 | if (blob_sizes.lbs_sock == 0) { | |
690 | sock->sk_security = NULL; | |
691 | return 0; | |
692 | } | |
693 | ||
694 | sock->sk_security = kzalloc(blob_sizes.lbs_sock, priority); | |
695 | if (sock->sk_security == NULL) | |
696 | return -ENOMEM; | |
697 | return 0; | |
698 | } | |
699 | ||
f4ad8f2c CS |
700 | /** |
701 | * lsm_early_task - during initialization allocate a composite task blob | |
702 | * @task: the task that needs a blob | |
703 | * | |
1cfb2a51 | 704 | * Allocate the task blob for all the modules |
f4ad8f2c | 705 | */ |
1cfb2a51 | 706 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 707 | { |
1cfb2a51 | 708 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 709 | |
f4ad8f2c CS |
710 | if (rc) |
711 | panic("%s: Early task alloc failed.\n", __func__); | |
712 | } | |
713 | ||
98e828a0 KS |
714 | /* |
715 | * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and | |
716 | * can be accessed with: | |
717 | * | |
718 | * LSM_RET_DEFAULT(<hook_name>) | |
719 | * | |
720 | * The macros below define static constants for the default value of each | |
721 | * LSM hook. | |
722 | */ | |
723 | #define LSM_RET_DEFAULT(NAME) (NAME##_default) | |
724 | #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME) | |
725 | #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \ | |
726 | static const int LSM_RET_DEFAULT(NAME) = (DEFAULT); | |
727 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ | |
728 | DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME) | |
729 | ||
730 | #include <linux/lsm_hook_defs.h> | |
731 | #undef LSM_HOOK | |
732 | ||
f25fce3e | 733 | /* |
b1d9e6b0 | 734 | * Hook list operation macros. |
1da177e4 | 735 | * |
f25fce3e CS |
736 | * call_void_hook: |
737 | * This is a hook that does not return a value. | |
1da177e4 | 738 | * |
f25fce3e CS |
739 | * call_int_hook: |
740 | * This is a hook that returns a value. | |
1da177e4 | 741 | */ |
1da177e4 | 742 | |
b1d9e6b0 CS |
743 | #define call_void_hook(FUNC, ...) \ |
744 | do { \ | |
745 | struct security_hook_list *P; \ | |
746 | \ | |
df0ce173 | 747 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
748 | P->hook.FUNC(__VA_ARGS__); \ |
749 | } while (0) | |
750 | ||
751 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
752 | int RC = IRC; \ | |
753 | do { \ | |
754 | struct security_hook_list *P; \ | |
755 | \ | |
df0ce173 | 756 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
757 | RC = P->hook.FUNC(__VA_ARGS__); \ |
758 | if (RC != 0) \ | |
759 | break; \ | |
760 | } \ | |
761 | } while (0); \ | |
762 | RC; \ | |
763 | }) | |
1da177e4 | 764 | |
20510f2f JM |
765 | /* Security operations */ |
766 | ||
79af7307 SS |
767 | int security_binder_set_context_mgr(struct task_struct *mgr) |
768 | { | |
f25fce3e | 769 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 | 770 | } |
2e0647d3 | 771 | EXPORT_SYMBOL(security_binder_set_context_mgr); |
79af7307 SS |
772 | |
773 | int security_binder_transaction(struct task_struct *from, | |
774 | struct task_struct *to) | |
775 | { | |
f25fce3e | 776 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 | 777 | } |
2e0647d3 | 778 | EXPORT_SYMBOL(security_binder_transaction); |
79af7307 SS |
779 | |
780 | int security_binder_transfer_binder(struct task_struct *from, | |
781 | struct task_struct *to) | |
782 | { | |
f25fce3e | 783 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 | 784 | } |
2e0647d3 | 785 | EXPORT_SYMBOL(security_binder_transfer_binder); |
79af7307 SS |
786 | |
787 | int security_binder_transfer_file(struct task_struct *from, | |
788 | struct task_struct *to, struct file *file) | |
789 | { | |
f25fce3e | 790 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 | 791 | } |
2e0647d3 | 792 | EXPORT_SYMBOL(security_binder_transfer_file); |
79af7307 | 793 | |
9e48858f | 794 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 795 | { |
f25fce3e | 796 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
797 | } |
798 | ||
799 | int security_ptrace_traceme(struct task_struct *parent) | |
800 | { | |
f25fce3e | 801 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
802 | } |
803 | ||
804 | int security_capget(struct task_struct *target, | |
805 | kernel_cap_t *effective, | |
806 | kernel_cap_t *inheritable, | |
807 | kernel_cap_t *permitted) | |
808 | { | |
f25fce3e CS |
809 | return call_int_hook(capget, 0, target, |
810 | effective, inheritable, permitted); | |
20510f2f JM |
811 | } |
812 | ||
d84f4f99 DH |
813 | int security_capset(struct cred *new, const struct cred *old, |
814 | const kernel_cap_t *effective, | |
815 | const kernel_cap_t *inheritable, | |
816 | const kernel_cap_t *permitted) | |
20510f2f | 817 | { |
f25fce3e CS |
818 | return call_int_hook(capset, 0, new, old, |
819 | effective, inheritable, permitted); | |
20510f2f JM |
820 | } |
821 | ||
c1a85a00 MM |
822 | int security_capable(const struct cred *cred, |
823 | struct user_namespace *ns, | |
824 | int cap, | |
825 | unsigned int opts) | |
20510f2f | 826 | { |
c1a85a00 | 827 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
828 | } |
829 | ||
20510f2f JM |
830 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
831 | { | |
f25fce3e | 832 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
833 | } |
834 | ||
835 | int security_quota_on(struct dentry *dentry) | |
836 | { | |
f25fce3e | 837 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
838 | } |
839 | ||
12b3052c | 840 | int security_syslog(int type) |
20510f2f | 841 | { |
f25fce3e | 842 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
843 | } |
844 | ||
457db29b | 845 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 846 | { |
f25fce3e | 847 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
848 | } |
849 | ||
20510f2f JM |
850 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
851 | { | |
b1d9e6b0 CS |
852 | struct security_hook_list *hp; |
853 | int cap_sys_admin = 1; | |
854 | int rc; | |
855 | ||
856 | /* | |
857 | * The module will respond with a positive value if | |
858 | * it thinks the __vm_enough_memory() call should be | |
859 | * made with the cap_sys_admin set. If all of the modules | |
860 | * agree that it should be set it will. If any module | |
861 | * thinks it should not be set it won't. | |
862 | */ | |
df0ce173 | 863 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
864 | rc = hp->hook.vm_enough_memory(mm, pages); |
865 | if (rc <= 0) { | |
866 | cap_sys_admin = 0; | |
867 | break; | |
868 | } | |
869 | } | |
870 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
871 | } |
872 | ||
b8bff599 | 873 | int security_bprm_creds_for_exec(struct linux_binprm *bprm) |
20510f2f | 874 | { |
b8bff599 EB |
875 | return call_int_hook(bprm_creds_for_exec, 0, bprm); |
876 | } | |
877 | ||
56305aa9 | 878 | int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file) |
20510f2f | 879 | { |
56305aa9 | 880 | return call_int_hook(bprm_creds_from_file, 0, bprm, file); |
20510f2f JM |
881 | } |
882 | ||
a6f76f23 | 883 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 884 | { |
6c21a7fb MZ |
885 | int ret; |
886 | ||
f25fce3e | 887 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
888 | if (ret) |
889 | return ret; | |
890 | return ima_bprm_check(bprm); | |
20510f2f JM |
891 | } |
892 | ||
a6f76f23 | 893 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 894 | { |
f25fce3e | 895 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
896 | } |
897 | ||
a6f76f23 | 898 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 899 | { |
f25fce3e | 900 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
901 | } |
902 | ||
0b52075e AV |
903 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
904 | { | |
905 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
906 | } | |
907 | ||
da2441fd DH |
908 | int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param) |
909 | { | |
910 | return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param); | |
911 | } | |
912 | ||
20510f2f JM |
913 | int security_sb_alloc(struct super_block *sb) |
914 | { | |
f25fce3e | 915 | return call_int_hook(sb_alloc_security, 0, sb); |
20510f2f JM |
916 | } |
917 | ||
918 | void security_sb_free(struct super_block *sb) | |
919 | { | |
f25fce3e | 920 | call_void_hook(sb_free_security, sb); |
20510f2f JM |
921 | } |
922 | ||
204cc0cc | 923 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 924 | { |
204cc0cc AV |
925 | if (!*mnt_opts) |
926 | return; | |
927 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
928 | *mnt_opts = NULL; | |
20510f2f | 929 | } |
204cc0cc | 930 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 931 | |
204cc0cc | 932 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 933 | { |
204cc0cc | 934 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 935 | } |
f5c0c26d | 936 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 937 | |
c039bc3c | 938 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 939 | void *mnt_opts) |
20510f2f | 940 | { |
204cc0cc | 941 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 942 | } |
a65001e8 | 943 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 944 | |
a10d7c22 | 945 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 946 | { |
a10d7c22 | 947 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
948 | } |
949 | ||
2069f457 EP |
950 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
951 | { | |
f25fce3e | 952 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
953 | } |
954 | ||
20510f2f JM |
955 | int security_sb_statfs(struct dentry *dentry) |
956 | { | |
f25fce3e | 957 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
958 | } |
959 | ||
8a04c43b | 960 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 961 | const char *type, unsigned long flags, void *data) |
20510f2f | 962 | { |
f25fce3e | 963 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
964 | } |
965 | ||
20510f2f JM |
966 | int security_sb_umount(struct vfsmount *mnt, int flags) |
967 | { | |
f25fce3e | 968 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
969 | } |
970 | ||
3b73b68c | 971 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 972 | { |
f25fce3e | 973 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
974 | } |
975 | ||
c9180a57 | 976 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 977 | void *mnt_opts, |
649f6e77 DQ |
978 | unsigned long kern_flags, |
979 | unsigned long *set_kern_flags) | |
c9180a57 | 980 | { |
b1d9e6b0 | 981 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
982 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
983 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 984 | } |
e0007529 | 985 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 986 | |
094f7b69 | 987 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
988 | struct super_block *newsb, |
989 | unsigned long kern_flags, | |
990 | unsigned long *set_kern_flags) | |
c9180a57 | 991 | { |
0b4d3452 SM |
992 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
993 | kern_flags, set_kern_flags); | |
c9180a57 | 994 | } |
e0007529 EP |
995 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
996 | ||
757cbe59 AV |
997 | int security_add_mnt_opt(const char *option, const char *val, int len, |
998 | void **mnt_opts) | |
e0007529 | 999 | { |
757cbe59 AV |
1000 | return call_int_hook(sb_add_mnt_opt, -EINVAL, |
1001 | option, val, len, mnt_opts); | |
e0007529 | 1002 | } |
757cbe59 | 1003 | EXPORT_SYMBOL(security_add_mnt_opt); |
c9180a57 | 1004 | |
2db154b3 DH |
1005 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
1006 | { | |
1007 | return call_int_hook(move_mount, 0, from_path, to_path); | |
1008 | } | |
1009 | ||
ac5656d8 AG |
1010 | int security_path_notify(const struct path *path, u64 mask, |
1011 | unsigned int obj_type) | |
1012 | { | |
1013 | return call_int_hook(path_notify, 0, path, mask, obj_type); | |
1014 | } | |
1015 | ||
20510f2f JM |
1016 | int security_inode_alloc(struct inode *inode) |
1017 | { | |
afb1cbe3 CS |
1018 | int rc = lsm_inode_alloc(inode); |
1019 | ||
1020 | if (unlikely(rc)) | |
1021 | return rc; | |
1022 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
1023 | if (unlikely(rc)) | |
1024 | security_inode_free(inode); | |
1025 | return rc; | |
1026 | } | |
1027 | ||
1028 | static void inode_free_by_rcu(struct rcu_head *head) | |
1029 | { | |
1030 | /* | |
1031 | * The rcu head is at the start of the inode blob | |
1032 | */ | |
1033 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
1034 | } |
1035 | ||
1036 | void security_inode_free(struct inode *inode) | |
1037 | { | |
f381c272 | 1038 | integrity_inode_free(inode); |
f25fce3e | 1039 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
1040 | /* |
1041 | * The inode may still be referenced in a path walk and | |
1042 | * a call to security_inode_permission() can be made | |
1043 | * after inode_free_security() is called. Ideally, the VFS | |
1044 | * wouldn't do this, but fixing that is a much harder | |
1045 | * job. For now, simply free the i_security via RCU, and | |
1046 | * leave the current inode->i_security pointer intact. | |
1047 | * The inode will be freed after the RCU grace period too. | |
1048 | */ | |
1049 | if (inode->i_security) | |
1050 | call_rcu((struct rcu_head *)inode->i_security, | |
1051 | inode_free_by_rcu); | |
20510f2f JM |
1052 | } |
1053 | ||
d47be3df | 1054 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 1055 | const struct qstr *name, void **ctx, |
d47be3df DQ |
1056 | u32 *ctxlen) |
1057 | { | |
b1d9e6b0 CS |
1058 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
1059 | name, ctx, ctxlen); | |
d47be3df DQ |
1060 | } |
1061 | EXPORT_SYMBOL(security_dentry_init_security); | |
1062 | ||
2602625b VG |
1063 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
1064 | struct qstr *name, | |
1065 | const struct cred *old, struct cred *new) | |
1066 | { | |
1067 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
1068 | name, old, new); | |
1069 | } | |
1070 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
1071 | ||
20510f2f | 1072 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
1073 | const struct qstr *qstr, |
1074 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 1075 | { |
823eb1cc MZ |
1076 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
1077 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
1078 | int ret; |
1079 | ||
20510f2f | 1080 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 1081 | return 0; |
9d8f13ba | 1082 | |
9d8f13ba | 1083 | if (!initxattrs) |
e308fd3b JB |
1084 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
1085 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 1086 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 1087 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 1088 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
1089 | &lsm_xattr->name, |
1090 | &lsm_xattr->value, | |
1091 | &lsm_xattr->value_len); | |
1092 | if (ret) | |
1093 | goto out; | |
823eb1cc MZ |
1094 | |
1095 | evm_xattr = lsm_xattr + 1; | |
1096 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1097 | if (ret) | |
1098 | goto out; | |
9d8f13ba MZ |
1099 | ret = initxattrs(inode, new_xattrs, fs_data); |
1100 | out: | |
9548906b | 1101 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1102 | kfree(xattr->value); |
9d8f13ba MZ |
1103 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1104 | } | |
1105 | EXPORT_SYMBOL(security_inode_init_security); | |
1106 | ||
1107 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, | |
9548906b | 1108 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1109 | void **value, size_t *len) |
20510f2f JM |
1110 | { |
1111 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1112 | return -EOPNOTSUPP; |
e308fd3b JB |
1113 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1114 | qstr, name, value, len); | |
20510f2f | 1115 | } |
9d8f13ba | 1116 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1117 | |
be6d3e56 | 1118 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1119 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1120 | unsigned int dev) |
1121 | { | |
c6f493d6 | 1122 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1123 | return 0; |
f25fce3e | 1124 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1125 | } |
1126 | EXPORT_SYMBOL(security_path_mknod); | |
1127 | ||
d3607752 | 1128 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1129 | { |
c6f493d6 | 1130 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1131 | return 0; |
f25fce3e | 1132 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1133 | } |
82140443 | 1134 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1135 | |
989f74e0 | 1136 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1137 | { |
c6f493d6 | 1138 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1139 | return 0; |
f25fce3e | 1140 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 KT |
1141 | } |
1142 | ||
989f74e0 | 1143 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1144 | { |
c6f493d6 | 1145 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1146 | return 0; |
f25fce3e | 1147 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1148 | } |
82140443 | 1149 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1150 | |
d3607752 | 1151 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1152 | const char *old_name) |
1153 | { | |
c6f493d6 | 1154 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1155 | return 0; |
f25fce3e | 1156 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 KT |
1157 | } |
1158 | ||
3ccee46a | 1159 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1160 | struct dentry *new_dentry) |
1161 | { | |
c6f493d6 | 1162 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1163 | return 0; |
f25fce3e | 1164 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 KT |
1165 | } |
1166 | ||
3ccee46a AV |
1167 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1168 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1169 | unsigned int flags) |
be6d3e56 | 1170 | { |
c6f493d6 DH |
1171 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1172 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1173 | return 0; |
da1ce067 MS |
1174 | |
1175 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1176 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1177 | old_dir, old_dentry); | |
da1ce067 MS |
1178 | if (err) |
1179 | return err; | |
1180 | } | |
1181 | ||
f25fce3e CS |
1182 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1183 | new_dentry); | |
be6d3e56 | 1184 | } |
82140443 | 1185 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1186 | |
81f4c506 | 1187 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1188 | { |
c6f493d6 | 1189 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1190 | return 0; |
f25fce3e | 1191 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1192 | } |
89eda068 | 1193 | |
be01f9f2 | 1194 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1195 | { |
c6f493d6 | 1196 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1197 | return 0; |
f25fce3e | 1198 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 TH |
1199 | } |
1200 | ||
7fd25dac | 1201 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1202 | { |
c6f493d6 | 1203 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1204 | return 0; |
f25fce3e | 1205 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1206 | } |
8b8efb44 | 1207 | |
77b286c0 | 1208 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1209 | { |
f25fce3e | 1210 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1211 | } |
be6d3e56 KT |
1212 | #endif |
1213 | ||
4acdaf27 | 1214 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1215 | { |
1216 | if (unlikely(IS_PRIVATE(dir))) | |
1217 | return 0; | |
f25fce3e | 1218 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1219 | } |
800a9647 | 1220 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1221 | |
1222 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1223 | struct dentry *new_dentry) | |
1224 | { | |
c6f493d6 | 1225 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1226 | return 0; |
f25fce3e | 1227 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1228 | } |
1229 | ||
1230 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1231 | { | |
c6f493d6 | 1232 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1233 | return 0; |
f25fce3e | 1234 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1235 | } |
1236 | ||
1237 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1238 | const char *old_name) | |
1239 | { | |
1240 | if (unlikely(IS_PRIVATE(dir))) | |
1241 | return 0; | |
f25fce3e | 1242 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1243 | } |
1244 | ||
18bb1db3 | 1245 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1246 | { |
1247 | if (unlikely(IS_PRIVATE(dir))) | |
1248 | return 0; | |
f25fce3e | 1249 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1250 | } |
800a9647 | 1251 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1252 | |
1253 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1254 | { | |
c6f493d6 | 1255 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1256 | return 0; |
f25fce3e | 1257 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1258 | } |
1259 | ||
1a67aafb | 1260 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1261 | { |
1262 | if (unlikely(IS_PRIVATE(dir))) | |
1263 | return 0; | |
f25fce3e | 1264 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1265 | } |
1266 | ||
1267 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1268 | struct inode *new_dir, struct dentry *new_dentry, |
1269 | unsigned int flags) | |
20510f2f | 1270 | { |
c6f493d6 DH |
1271 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1272 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1273 | return 0; |
da1ce067 MS |
1274 | |
1275 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1276 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1277 | old_dir, old_dentry); |
1278 | if (err) | |
1279 | return err; | |
1280 | } | |
1281 | ||
f25fce3e | 1282 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1283 | new_dir, new_dentry); |
1284 | } | |
1285 | ||
1286 | int security_inode_readlink(struct dentry *dentry) | |
1287 | { | |
c6f493d6 | 1288 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1289 | return 0; |
f25fce3e | 1290 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1291 | } |
1292 | ||
bda0be7a N |
1293 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1294 | bool rcu) | |
20510f2f | 1295 | { |
bda0be7a | 1296 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1297 | return 0; |
e22619a2 | 1298 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1299 | } |
1300 | ||
b77b0646 | 1301 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1302 | { |
1303 | if (unlikely(IS_PRIVATE(inode))) | |
1304 | return 0; | |
f25fce3e | 1305 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f JM |
1306 | } |
1307 | ||
1308 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1309 | { | |
817b54aa MZ |
1310 | int ret; |
1311 | ||
c6f493d6 | 1312 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1313 | return 0; |
f25fce3e | 1314 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1315 | if (ret) |
1316 | return ret; | |
1317 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1318 | } |
b1da47e2 | 1319 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1320 | |
3f7036a0 | 1321 | int security_inode_getattr(const struct path *path) |
20510f2f | 1322 | { |
c6f493d6 | 1323 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1324 | return 0; |
f25fce3e | 1325 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1326 | } |
1327 | ||
8f0cfa52 DH |
1328 | int security_inode_setxattr(struct dentry *dentry, const char *name, |
1329 | const void *value, size_t size, int flags) | |
20510f2f | 1330 | { |
3e1be52d MZ |
1331 | int ret; |
1332 | ||
c6f493d6 | 1333 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1334 | return 0; |
b1d9e6b0 CS |
1335 | /* |
1336 | * SELinux and Smack integrate the cap call, | |
1337 | * so assume that all LSMs supplying this call do so. | |
1338 | */ | |
1339 | ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, | |
f25fce3e | 1340 | flags); |
b1d9e6b0 CS |
1341 | |
1342 | if (ret == 1) | |
1343 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1344 | if (ret) |
1345 | return ret; | |
1346 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1347 | if (ret) |
1348 | return ret; | |
1349 | return evm_inode_setxattr(dentry, name, value, size); | |
20510f2f JM |
1350 | } |
1351 | ||
8f0cfa52 DH |
1352 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1353 | const void *value, size_t size, int flags) | |
20510f2f | 1354 | { |
c6f493d6 | 1355 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1356 | return; |
f25fce3e | 1357 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1358 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1359 | } |
1360 | ||
8f0cfa52 | 1361 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1362 | { |
c6f493d6 | 1363 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1364 | return 0; |
f25fce3e | 1365 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1366 | } |
1367 | ||
1368 | int security_inode_listxattr(struct dentry *dentry) | |
1369 | { | |
c6f493d6 | 1370 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1371 | return 0; |
f25fce3e | 1372 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1373 | } |
1374 | ||
8f0cfa52 | 1375 | int security_inode_removexattr(struct dentry *dentry, const char *name) |
20510f2f | 1376 | { |
3e1be52d MZ |
1377 | int ret; |
1378 | ||
c6f493d6 | 1379 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1380 | return 0; |
b1d9e6b0 CS |
1381 | /* |
1382 | * SELinux and Smack integrate the cap call, | |
1383 | * so assume that all LSMs supplying this call do so. | |
1384 | */ | |
1385 | ret = call_int_hook(inode_removexattr, 1, dentry, name); | |
1386 | if (ret == 1) | |
1387 | ret = cap_inode_removexattr(dentry, name); | |
42c63330 MZ |
1388 | if (ret) |
1389 | return ret; | |
1390 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1391 | if (ret) |
1392 | return ret; | |
1393 | return evm_inode_removexattr(dentry, name); | |
20510f2f JM |
1394 | } |
1395 | ||
b5376771 SH |
1396 | int security_inode_need_killpriv(struct dentry *dentry) |
1397 | { | |
f25fce3e | 1398 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1399 | } |
1400 | ||
1401 | int security_inode_killpriv(struct dentry *dentry) | |
1402 | { | |
f25fce3e | 1403 | return call_int_hook(inode_killpriv, 0, dentry); |
b5376771 SH |
1404 | } |
1405 | ||
ea861dfd | 1406 | int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) |
20510f2f | 1407 | { |
2885c1e3 CS |
1408 | struct security_hook_list *hp; |
1409 | int rc; | |
1410 | ||
20510f2f | 1411 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1412 | return LSM_RET_DEFAULT(inode_getsecurity); |
2885c1e3 CS |
1413 | /* |
1414 | * Only one module will provide an attribute with a given name. | |
1415 | */ | |
df0ce173 | 1416 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
2885c1e3 | 1417 | rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); |
98e828a0 | 1418 | if (rc != LSM_RET_DEFAULT(inode_getsecurity)) |
2885c1e3 CS |
1419 | return rc; |
1420 | } | |
98e828a0 | 1421 | return LSM_RET_DEFAULT(inode_getsecurity); |
20510f2f JM |
1422 | } |
1423 | ||
1424 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1425 | { | |
2885c1e3 CS |
1426 | struct security_hook_list *hp; |
1427 | int rc; | |
1428 | ||
20510f2f | 1429 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1430 | return LSM_RET_DEFAULT(inode_setsecurity); |
2885c1e3 CS |
1431 | /* |
1432 | * Only one module will provide an attribute with a given name. | |
1433 | */ | |
df0ce173 | 1434 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1435 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1436 | flags); | |
98e828a0 | 1437 | if (rc != LSM_RET_DEFAULT(inode_setsecurity)) |
2885c1e3 CS |
1438 | return rc; |
1439 | } | |
98e828a0 | 1440 | return LSM_RET_DEFAULT(inode_setsecurity); |
20510f2f JM |
1441 | } |
1442 | ||
1443 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1444 | { | |
1445 | if (unlikely(IS_PRIVATE(inode))) | |
1446 | return 0; | |
f25fce3e | 1447 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1448 | } |
c9bccef6 | 1449 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1450 | |
d6335d77 | 1451 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1452 | { |
f25fce3e | 1453 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1454 | } |
1455 | ||
d8ad8b49 VG |
1456 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1457 | { | |
1458 | return call_int_hook(inode_copy_up, 0, src, new); | |
1459 | } | |
1460 | EXPORT_SYMBOL(security_inode_copy_up); | |
1461 | ||
121ab822 VG |
1462 | int security_inode_copy_up_xattr(const char *name) |
1463 | { | |
23e390cd KS |
1464 | struct security_hook_list *hp; |
1465 | int rc; | |
1466 | ||
1467 | /* | |
1468 | * The implementation can return 0 (accept the xattr), 1 (discard the | |
1469 | * xattr), -EOPNOTSUPP if it does not know anything about the xattr or | |
1470 | * any other error code incase of an error. | |
1471 | */ | |
1472 | hlist_for_each_entry(hp, | |
1473 | &security_hook_heads.inode_copy_up_xattr, list) { | |
1474 | rc = hp->hook.inode_copy_up_xattr(name); | |
1475 | if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr)) | |
1476 | return rc; | |
1477 | } | |
1478 | ||
1479 | return LSM_RET_DEFAULT(inode_copy_up_xattr); | |
121ab822 VG |
1480 | } |
1481 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1482 | ||
b230d5ab OM |
1483 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1484 | struct kernfs_node *kn) | |
1485 | { | |
1486 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1487 | } | |
1488 | ||
20510f2f JM |
1489 | int security_file_permission(struct file *file, int mask) |
1490 | { | |
c4ec54b4 EP |
1491 | int ret; |
1492 | ||
f25fce3e | 1493 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1494 | if (ret) |
1495 | return ret; | |
1496 | ||
1497 | return fsnotify_perm(file, mask); | |
20510f2f JM |
1498 | } |
1499 | ||
1500 | int security_file_alloc(struct file *file) | |
1501 | { | |
33bf60ca CS |
1502 | int rc = lsm_file_alloc(file); |
1503 | ||
1504 | if (rc) | |
1505 | return rc; | |
1506 | rc = call_int_hook(file_alloc_security, 0, file); | |
1507 | if (unlikely(rc)) | |
1508 | security_file_free(file); | |
1509 | return rc; | |
20510f2f JM |
1510 | } |
1511 | ||
1512 | void security_file_free(struct file *file) | |
1513 | { | |
33bf60ca CS |
1514 | void *blob; |
1515 | ||
f25fce3e | 1516 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1517 | |
1518 | blob = file->f_security; | |
1519 | if (blob) { | |
1520 | file->f_security = NULL; | |
1521 | kmem_cache_free(lsm_file_cache, blob); | |
1522 | } | |
20510f2f JM |
1523 | } |
1524 | ||
1525 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1526 | { | |
f25fce3e | 1527 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f | 1528 | } |
292f902a | 1529 | EXPORT_SYMBOL_GPL(security_file_ioctl); |
20510f2f | 1530 | |
98de59bf | 1531 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1532 | { |
8b3ec681 | 1533 | /* |
98de59bf AV |
1534 | * Does we have PROT_READ and does the application expect |
1535 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1536 | */ |
98de59bf AV |
1537 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1538 | return prot; | |
8b3ec681 | 1539 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1540 | return prot; |
1541 | /* | |
1542 | * if that's an anonymous mapping, let it. | |
1543 | */ | |
1544 | if (!file) | |
1545 | return prot | PROT_EXEC; | |
1546 | /* | |
1547 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1548 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1549 | */ |
90f8572b | 1550 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1551 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1552 | if (file->f_op->mmap_capabilities) { |
1553 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1554 | if (!(caps & NOMMU_MAP_EXEC)) | |
1555 | return prot; | |
1556 | } | |
8b3ec681 | 1557 | #endif |
98de59bf | 1558 | return prot | PROT_EXEC; |
8b3ec681 | 1559 | } |
98de59bf AV |
1560 | /* anything on noexec mount won't get PROT_EXEC */ |
1561 | return prot; | |
1562 | } | |
1563 | ||
1564 | int security_mmap_file(struct file *file, unsigned long prot, | |
1565 | unsigned long flags) | |
1566 | { | |
1567 | int ret; | |
f25fce3e | 1568 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1569 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1570 | if (ret) |
1571 | return ret; | |
1572 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1573 | } |
1574 | ||
e5467859 AV |
1575 | int security_mmap_addr(unsigned long addr) |
1576 | { | |
f25fce3e | 1577 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1578 | } |
1579 | ||
20510f2f JM |
1580 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1581 | unsigned long prot) | |
1582 | { | |
8eb613c0 MZ |
1583 | int ret; |
1584 | ||
1585 | ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot); | |
1586 | if (ret) | |
1587 | return ret; | |
1588 | return ima_file_mprotect(vma, prot); | |
20510f2f JM |
1589 | } |
1590 | ||
1591 | int security_file_lock(struct file *file, unsigned int cmd) | |
1592 | { | |
f25fce3e | 1593 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1594 | } |
1595 | ||
1596 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1597 | { | |
f25fce3e | 1598 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1599 | } |
1600 | ||
e0b93edd | 1601 | void security_file_set_fowner(struct file *file) |
20510f2f | 1602 | { |
f25fce3e | 1603 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1604 | } |
1605 | ||
1606 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1607 | struct fown_struct *fown, int sig) | |
1608 | { | |
f25fce3e | 1609 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1610 | } |
1611 | ||
1612 | int security_file_receive(struct file *file) | |
1613 | { | |
f25fce3e | 1614 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1615 | } |
1616 | ||
e3f20ae2 | 1617 | int security_file_open(struct file *file) |
20510f2f | 1618 | { |
c4ec54b4 EP |
1619 | int ret; |
1620 | ||
94817692 | 1621 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1622 | if (ret) |
1623 | return ret; | |
1624 | ||
1625 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1626 | } |
1627 | ||
e4e55b47 TH |
1628 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1629 | { | |
f4ad8f2c CS |
1630 | int rc = lsm_task_alloc(task); |
1631 | ||
1632 | if (rc) | |
1633 | return rc; | |
1634 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1635 | if (unlikely(rc)) | |
1636 | security_task_free(task); | |
1637 | return rc; | |
e4e55b47 TH |
1638 | } |
1639 | ||
1a2a4d06 KC |
1640 | void security_task_free(struct task_struct *task) |
1641 | { | |
f25fce3e | 1642 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1643 | |
1644 | kfree(task->security); | |
1645 | task->security = NULL; | |
1a2a4d06 KC |
1646 | } |
1647 | ||
ee18d64c DH |
1648 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1649 | { | |
bbd3662a CS |
1650 | int rc = lsm_cred_alloc(cred, gfp); |
1651 | ||
1652 | if (rc) | |
1653 | return rc; | |
1654 | ||
1655 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1656 | if (unlikely(rc)) |
bbd3662a CS |
1657 | security_cred_free(cred); |
1658 | return rc; | |
ee18d64c DH |
1659 | } |
1660 | ||
d84f4f99 | 1661 | void security_cred_free(struct cred *cred) |
20510f2f | 1662 | { |
a5795fd3 JM |
1663 | /* |
1664 | * There is a failure case in prepare_creds() that | |
1665 | * may result in a call here with ->security being NULL. | |
1666 | */ | |
1667 | if (unlikely(cred->security == NULL)) | |
1668 | return; | |
1669 | ||
f25fce3e | 1670 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1671 | |
1672 | kfree(cred->security); | |
1673 | cred->security = NULL; | |
20510f2f JM |
1674 | } |
1675 | ||
d84f4f99 | 1676 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1677 | { |
bbd3662a CS |
1678 | int rc = lsm_cred_alloc(new, gfp); |
1679 | ||
1680 | if (rc) | |
1681 | return rc; | |
1682 | ||
1683 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1684 | if (unlikely(rc)) |
bbd3662a CS |
1685 | security_cred_free(new); |
1686 | return rc; | |
d84f4f99 DH |
1687 | } |
1688 | ||
ee18d64c DH |
1689 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1690 | { | |
f25fce3e | 1691 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1692 | } |
1693 | ||
3ec30113 MG |
1694 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
1695 | { | |
1696 | *secid = 0; | |
1697 | call_void_hook(cred_getsecid, c, secid); | |
1698 | } | |
1699 | EXPORT_SYMBOL(security_cred_getsecid); | |
1700 | ||
83741abe | 1701 | int security_kernel_act_as(struct cred *new, struct lsmblob *blob) |
3a3b7ce9 | 1702 | { |
83741abe CS |
1703 | struct security_hook_list *hp; |
1704 | int rc; | |
1705 | ||
1706 | hlist_for_each_entry(hp, &security_hook_heads.kernel_act_as, list) { | |
1707 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
1708 | continue; | |
1709 | rc = hp->hook.kernel_act_as(new, blob->secid[hp->lsmid->slot]); | |
1710 | if (rc != 0) | |
1711 | return rc; | |
1712 | } | |
1713 | return 0; | |
3a3b7ce9 DH |
1714 | } |
1715 | ||
1716 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1717 | { | |
f25fce3e | 1718 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1719 | } |
1720 | ||
dd8dbf2e | 1721 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1722 | { |
6eb864c1 MK |
1723 | int ret; |
1724 | ||
1725 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1726 | if (ret) | |
1727 | return ret; | |
1728 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1729 | } |
1730 | ||
2039bda1 KC |
1731 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, |
1732 | bool contents) | |
39eeb4fb MZ |
1733 | { |
1734 | int ret; | |
1735 | ||
2039bda1 | 1736 | ret = call_int_hook(kernel_read_file, 0, file, id, contents); |
39eeb4fb MZ |
1737 | if (ret) |
1738 | return ret; | |
2039bda1 | 1739 | return ima_read_file(file, id, contents); |
39eeb4fb MZ |
1740 | } |
1741 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1742 | ||
bc8ca5b9 MZ |
1743 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1744 | enum kernel_read_file_id id) | |
b44a7dfc | 1745 | { |
cf222217 MZ |
1746 | int ret; |
1747 | ||
1748 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1749 | if (ret) | |
1750 | return ret; | |
1751 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1752 | } |
1753 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1754 | ||
b64fcae7 | 1755 | int security_kernel_load_data(enum kernel_load_data_id id, bool contents) |
377179cd | 1756 | { |
16c267aa MZ |
1757 | int ret; |
1758 | ||
b64fcae7 | 1759 | ret = call_int_hook(kernel_load_data, 0, id, contents); |
16c267aa MZ |
1760 | if (ret) |
1761 | return ret; | |
b64fcae7 | 1762 | return ima_load_data(id, contents); |
377179cd | 1763 | } |
83a68a06 | 1764 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1765 | |
b64fcae7 KC |
1766 | int security_kernel_post_load_data(char *buf, loff_t size, |
1767 | enum kernel_load_data_id id, | |
1768 | char *description) | |
1769 | { | |
1770 | int ret; | |
1771 | ||
1772 | ret = call_int_hook(kernel_post_load_data, 0, buf, size, id, | |
1773 | description); | |
1774 | if (ret) | |
1775 | return ret; | |
1776 | return ima_post_load_data(buf, size, id, description); | |
1777 | } | |
1778 | EXPORT_SYMBOL_GPL(security_kernel_post_load_data); | |
1779 | ||
d84f4f99 DH |
1780 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1781 | int flags) | |
20510f2f | 1782 | { |
f25fce3e | 1783 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1784 | } |
1785 | ||
39030e13 TC |
1786 | int security_task_fix_setgid(struct cred *new, const struct cred *old, |
1787 | int flags) | |
1788 | { | |
1789 | return call_int_hook(task_fix_setgid, 0, new, old, flags); | |
1790 | } | |
1791 | ||
20510f2f JM |
1792 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1793 | { | |
f25fce3e | 1794 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1795 | } |
1796 | ||
1797 | int security_task_getpgid(struct task_struct *p) | |
1798 | { | |
f25fce3e | 1799 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1800 | } |
1801 | ||
1802 | int security_task_getsid(struct task_struct *p) | |
1803 | { | |
f25fce3e | 1804 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1805 | } |
1806 | ||
1807 | void security_task_getsecid(struct task_struct *p, u32 *secid) | |
1808 | { | |
b1d9e6b0 | 1809 | *secid = 0; |
f25fce3e | 1810 | call_void_hook(task_getsecid, p, secid); |
20510f2f JM |
1811 | } |
1812 | EXPORT_SYMBOL(security_task_getsecid); | |
1813 | ||
20510f2f JM |
1814 | int security_task_setnice(struct task_struct *p, int nice) |
1815 | { | |
f25fce3e | 1816 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1817 | } |
1818 | ||
1819 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1820 | { | |
f25fce3e | 1821 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1822 | } |
1823 | ||
1824 | int security_task_getioprio(struct task_struct *p) | |
1825 | { | |
f25fce3e | 1826 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1827 | } |
1828 | ||
791ec491 SS |
1829 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1830 | unsigned int flags) | |
1831 | { | |
1832 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1833 | } | |
1834 | ||
8fd00b4d JS |
1835 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1836 | struct rlimit *new_rlim) | |
20510f2f | 1837 | { |
f25fce3e | 1838 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1839 | } |
1840 | ||
b0ae1981 | 1841 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1842 | { |
f25fce3e | 1843 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1844 | } |
1845 | ||
1846 | int security_task_getscheduler(struct task_struct *p) | |
1847 | { | |
f25fce3e | 1848 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1849 | } |
1850 | ||
1851 | int security_task_movememory(struct task_struct *p) | |
1852 | { | |
f25fce3e | 1853 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1854 | } |
1855 | ||
ae7795bc | 1856 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 1857 | int sig, const struct cred *cred) |
20510f2f | 1858 | { |
6b4f3d01 | 1859 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
1860 | } |
1861 | ||
20510f2f | 1862 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1863 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1864 | { |
b1d9e6b0 | 1865 | int thisrc; |
98e828a0 | 1866 | int rc = LSM_RET_DEFAULT(task_prctl); |
b1d9e6b0 CS |
1867 | struct security_hook_list *hp; |
1868 | ||
df0ce173 | 1869 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 | 1870 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
98e828a0 | 1871 | if (thisrc != LSM_RET_DEFAULT(task_prctl)) { |
b1d9e6b0 CS |
1872 | rc = thisrc; |
1873 | if (thisrc != 0) | |
1874 | break; | |
1875 | } | |
1876 | } | |
1877 | return rc; | |
20510f2f JM |
1878 | } |
1879 | ||
1880 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1881 | { | |
f25fce3e | 1882 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1883 | } |
1884 | ||
1885 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1886 | { | |
f25fce3e | 1887 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1888 | } |
1889 | ||
8a076191 AD |
1890 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1891 | { | |
b1d9e6b0 | 1892 | *secid = 0; |
f25fce3e | 1893 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1894 | } |
1895 | ||
20510f2f JM |
1896 | int security_msg_msg_alloc(struct msg_msg *msg) |
1897 | { | |
ecd5f82e CS |
1898 | int rc = lsm_msg_msg_alloc(msg); |
1899 | ||
1900 | if (unlikely(rc)) | |
1901 | return rc; | |
1902 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
1903 | if (unlikely(rc)) | |
1904 | security_msg_msg_free(msg); | |
1905 | return rc; | |
20510f2f JM |
1906 | } |
1907 | ||
1908 | void security_msg_msg_free(struct msg_msg *msg) | |
1909 | { | |
f25fce3e | 1910 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
1911 | kfree(msg->security); |
1912 | msg->security = NULL; | |
20510f2f JM |
1913 | } |
1914 | ||
d8c6e854 | 1915 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 1916 | { |
ecd5f82e CS |
1917 | int rc = lsm_ipc_alloc(msq); |
1918 | ||
1919 | if (unlikely(rc)) | |
1920 | return rc; | |
1921 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
1922 | if (unlikely(rc)) | |
1923 | security_msg_queue_free(msq); | |
1924 | return rc; | |
20510f2f JM |
1925 | } |
1926 | ||
d8c6e854 | 1927 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 1928 | { |
f25fce3e | 1929 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
1930 | kfree(msq->security); |
1931 | msq->security = NULL; | |
20510f2f JM |
1932 | } |
1933 | ||
d8c6e854 | 1934 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 1935 | { |
f25fce3e | 1936 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
1937 | } |
1938 | ||
d8c6e854 | 1939 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 1940 | { |
f25fce3e | 1941 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
1942 | } |
1943 | ||
d8c6e854 | 1944 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
1945 | struct msg_msg *msg, int msqflg) |
1946 | { | |
f25fce3e | 1947 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
1948 | } |
1949 | ||
d8c6e854 | 1950 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
1951 | struct task_struct *target, long type, int mode) |
1952 | { | |
f25fce3e | 1953 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
1954 | } |
1955 | ||
7191adff | 1956 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 1957 | { |
ecd5f82e CS |
1958 | int rc = lsm_ipc_alloc(shp); |
1959 | ||
1960 | if (unlikely(rc)) | |
1961 | return rc; | |
1962 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
1963 | if (unlikely(rc)) | |
1964 | security_shm_free(shp); | |
1965 | return rc; | |
20510f2f JM |
1966 | } |
1967 | ||
7191adff | 1968 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 1969 | { |
f25fce3e | 1970 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
1971 | kfree(shp->security); |
1972 | shp->security = NULL; | |
20510f2f JM |
1973 | } |
1974 | ||
7191adff | 1975 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 1976 | { |
f25fce3e | 1977 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
1978 | } |
1979 | ||
7191adff | 1980 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 1981 | { |
f25fce3e | 1982 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
1983 | } |
1984 | ||
7191adff | 1985 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 1986 | { |
f25fce3e | 1987 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
1988 | } |
1989 | ||
aefad959 | 1990 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 1991 | { |
ecd5f82e CS |
1992 | int rc = lsm_ipc_alloc(sma); |
1993 | ||
1994 | if (unlikely(rc)) | |
1995 | return rc; | |
1996 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
1997 | if (unlikely(rc)) | |
1998 | security_sem_free(sma); | |
1999 | return rc; | |
20510f2f JM |
2000 | } |
2001 | ||
aefad959 | 2002 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 2003 | { |
f25fce3e | 2004 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
2005 | kfree(sma->security); |
2006 | sma->security = NULL; | |
20510f2f JM |
2007 | } |
2008 | ||
aefad959 | 2009 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 2010 | { |
f25fce3e | 2011 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
2012 | } |
2013 | ||
aefad959 | 2014 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 2015 | { |
f25fce3e | 2016 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
2017 | } |
2018 | ||
aefad959 | 2019 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
2020 | unsigned nsops, int alter) |
2021 | { | |
f25fce3e | 2022 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
2023 | } |
2024 | ||
2025 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
2026 | { | |
2027 | if (unlikely(inode && IS_PRIVATE(inode))) | |
2028 | return; | |
f25fce3e | 2029 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
2030 | } |
2031 | EXPORT_SYMBOL(security_d_instantiate); | |
2032 | ||
6d9c939d CS |
2033 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
2034 | char **value) | |
20510f2f | 2035 | { |
6d9c939d CS |
2036 | struct security_hook_list *hp; |
2037 | ||
2038 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
f4d92e4c | 2039 | if (lsm != NULL && strcmp(lsm, hp->lsmid->lsm)) |
6d9c939d CS |
2040 | continue; |
2041 | return hp->hook.getprocattr(p, name, value); | |
2042 | } | |
98e828a0 | 2043 | return LSM_RET_DEFAULT(getprocattr); |
20510f2f JM |
2044 | } |
2045 | ||
6d9c939d CS |
2046 | int security_setprocattr(const char *lsm, const char *name, void *value, |
2047 | size_t size) | |
20510f2f | 2048 | { |
6d9c939d CS |
2049 | struct security_hook_list *hp; |
2050 | ||
2051 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
f4d92e4c | 2052 | if (lsm != NULL && strcmp(lsm, hp->lsmid->lsm)) |
6d9c939d CS |
2053 | continue; |
2054 | return hp->hook.setprocattr(name, value, size); | |
2055 | } | |
98e828a0 | 2056 | return LSM_RET_DEFAULT(setprocattr); |
20510f2f JM |
2057 | } |
2058 | ||
2059 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2060 | { | |
f25fce3e | 2061 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2062 | } |
20510f2f | 2063 | |
746df9b5 DQ |
2064 | int security_ismaclabel(const char *name) |
2065 | { | |
f25fce3e | 2066 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2067 | } |
2068 | EXPORT_SYMBOL(security_ismaclabel); | |
2069 | ||
20510f2f JM |
2070 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
2071 | { | |
0550cfe8 KS |
2072 | struct security_hook_list *hp; |
2073 | int rc; | |
2074 | ||
2075 | /* | |
2076 | * Currently, only one LSM can implement secid_to_secctx (i.e this | |
2077 | * LSM hook is not "stackable"). | |
2078 | */ | |
2079 | hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) { | |
2080 | rc = hp->hook.secid_to_secctx(secid, secdata, seclen); | |
2081 | if (rc != LSM_RET_DEFAULT(secid_to_secctx)) | |
2082 | return rc; | |
2083 | } | |
2084 | ||
2085 | return LSM_RET_DEFAULT(secid_to_secctx); | |
20510f2f JM |
2086 | } |
2087 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2088 | ||
7bf570dc | 2089 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 2090 | { |
b1d9e6b0 | 2091 | *secid = 0; |
f25fce3e | 2092 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
2093 | } |
2094 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2095 | ||
20510f2f JM |
2096 | void security_release_secctx(char *secdata, u32 seclen) |
2097 | { | |
f25fce3e | 2098 | call_void_hook(release_secctx, secdata, seclen); |
20510f2f JM |
2099 | } |
2100 | EXPORT_SYMBOL(security_release_secctx); | |
2101 | ||
6f3be9f5 AG |
2102 | void security_inode_invalidate_secctx(struct inode *inode) |
2103 | { | |
2104 | call_void_hook(inode_invalidate_secctx, inode); | |
2105 | } | |
2106 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2107 | ||
1ee65e37 DQ |
2108 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2109 | { | |
f25fce3e | 2110 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2111 | } |
2112 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2113 | ||
2114 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2115 | { | |
f25fce3e | 2116 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2117 | } |
2118 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2119 | ||
2120 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
2121 | { | |
b1d9e6b0 | 2122 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
2123 | } |
2124 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2125 | ||
344fa64e DH |
2126 | #ifdef CONFIG_WATCH_QUEUE |
2127 | int security_post_notification(const struct cred *w_cred, | |
2128 | const struct cred *cred, | |
2129 | struct watch_notification *n) | |
2130 | { | |
2131 | return call_int_hook(post_notification, 0, w_cred, cred, n); | |
2132 | } | |
2133 | #endif /* CONFIG_WATCH_QUEUE */ | |
2134 | ||
998f5040 DH |
2135 | #ifdef CONFIG_KEY_NOTIFICATIONS |
2136 | int security_watch_key(struct key *key) | |
2137 | { | |
2138 | return call_int_hook(watch_key, 0, key); | |
2139 | } | |
2140 | #endif | |
2141 | ||
20510f2f JM |
2142 | #ifdef CONFIG_SECURITY_NETWORK |
2143 | ||
3610cda5 | 2144 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2145 | { |
f25fce3e | 2146 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2147 | } |
2148 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2149 | ||
2150 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2151 | { | |
f25fce3e | 2152 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2153 | } |
2154 | EXPORT_SYMBOL(security_unix_may_send); | |
2155 | ||
2156 | int security_socket_create(int family, int type, int protocol, int kern) | |
2157 | { | |
f25fce3e | 2158 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2159 | } |
2160 | ||
2161 | int security_socket_post_create(struct socket *sock, int family, | |
2162 | int type, int protocol, int kern) | |
2163 | { | |
f25fce3e | 2164 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2165 | protocol, kern); |
2166 | } | |
2167 | ||
aae7cfcb DH |
2168 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
2169 | { | |
2170 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
2171 | } | |
2172 | EXPORT_SYMBOL(security_socket_socketpair); | |
2173 | ||
20510f2f JM |
2174 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
2175 | { | |
f25fce3e | 2176 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2177 | } |
2178 | ||
2179 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2180 | { | |
f25fce3e | 2181 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2182 | } |
2183 | ||
2184 | int security_socket_listen(struct socket *sock, int backlog) | |
2185 | { | |
f25fce3e | 2186 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2187 | } |
2188 | ||
2189 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2190 | { | |
f25fce3e | 2191 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2192 | } |
2193 | ||
20510f2f JM |
2194 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2195 | { | |
f25fce3e | 2196 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2197 | } |
2198 | ||
2199 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2200 | int size, int flags) | |
2201 | { | |
f25fce3e | 2202 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2203 | } |
2204 | ||
2205 | int security_socket_getsockname(struct socket *sock) | |
2206 | { | |
f25fce3e | 2207 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2208 | } |
2209 | ||
2210 | int security_socket_getpeername(struct socket *sock) | |
2211 | { | |
f25fce3e | 2212 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2213 | } |
2214 | ||
2215 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2216 | { | |
f25fce3e | 2217 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2218 | } |
2219 | ||
2220 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2221 | { | |
f25fce3e | 2222 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2223 | } |
2224 | ||
2225 | int security_socket_shutdown(struct socket *sock, int how) | |
2226 | { | |
f25fce3e | 2227 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2228 | } |
2229 | ||
2230 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2231 | { | |
f25fce3e | 2232 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2233 | } |
2234 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2235 | ||
2236 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2237 | int __user *optlen, unsigned len) | |
2238 | { | |
b1d9e6b0 CS |
2239 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
2240 | optval, optlen, len); | |
20510f2f JM |
2241 | } |
2242 | ||
8cad4719 CS |
2243 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, |
2244 | struct lsmblob *blob) | |
20510f2f | 2245 | { |
8cad4719 CS |
2246 | struct security_hook_list *hp; |
2247 | int rc = -ENOPROTOOPT; | |
2248 | ||
2249 | hlist_for_each_entry(hp, &security_hook_heads.socket_getpeersec_dgram, | |
2250 | list) { | |
2251 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2252 | continue; | |
2253 | rc = hp->hook.socket_getpeersec_dgram(sock, skb, | |
2254 | &blob->secid[hp->lsmid->slot]); | |
2255 | if (rc != 0) | |
2256 | break; | |
2257 | } | |
2258 | return rc; | |
20510f2f JM |
2259 | } |
2260 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2261 | ||
2262 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2263 | { | |
716eca8c CS |
2264 | int rc = lsm_sock_alloc(sk, priority); |
2265 | ||
2266 | if (unlikely(rc)) | |
2267 | return rc; | |
2268 | rc = call_int_hook(sk_alloc_security, 0, sk, family, priority); | |
2269 | if (unlikely(rc)) | |
2270 | security_sk_free(sk); | |
2271 | return rc; | |
20510f2f JM |
2272 | } |
2273 | ||
2274 | void security_sk_free(struct sock *sk) | |
2275 | { | |
f25fce3e | 2276 | call_void_hook(sk_free_security, sk); |
716eca8c CS |
2277 | kfree(sk->sk_security); |
2278 | sk->sk_security = NULL; | |
20510f2f JM |
2279 | } |
2280 | ||
2281 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2282 | { | |
f25fce3e | 2283 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2284 | } |
6230c9b4 | 2285 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f | 2286 | |
3df98d79 | 2287 | void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic) |
20510f2f | 2288 | { |
3df98d79 | 2289 | call_void_hook(sk_getsecid, sk, &flic->flowic_secid); |
20510f2f JM |
2290 | } |
2291 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2292 | ||
3df98d79 PM |
2293 | void security_req_classify_flow(const struct request_sock *req, |
2294 | struct flowi_common *flic) | |
20510f2f | 2295 | { |
3df98d79 | 2296 | call_void_hook(req_classify_flow, req, flic); |
20510f2f JM |
2297 | } |
2298 | EXPORT_SYMBOL(security_req_classify_flow); | |
2299 | ||
2300 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2301 | { | |
f25fce3e | 2302 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2303 | } |
2304 | EXPORT_SYMBOL(security_sock_graft); | |
2305 | ||
41dd9596 | 2306 | int security_inet_conn_request(const struct sock *sk, |
20510f2f JM |
2307 | struct sk_buff *skb, struct request_sock *req) |
2308 | { | |
f25fce3e | 2309 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2310 | } |
2311 | EXPORT_SYMBOL(security_inet_conn_request); | |
2312 | ||
2313 | void security_inet_csk_clone(struct sock *newsk, | |
2314 | const struct request_sock *req) | |
2315 | { | |
f25fce3e | 2316 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2317 | } |
2318 | ||
2319 | void security_inet_conn_established(struct sock *sk, | |
2320 | struct sk_buff *skb) | |
2321 | { | |
f25fce3e | 2322 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2323 | } |
72e89f50 | 2324 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2325 | |
2606fd1f EP |
2326 | int security_secmark_relabel_packet(u32 secid) |
2327 | { | |
f25fce3e | 2328 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2329 | } |
2330 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2331 | ||
2332 | void security_secmark_refcount_inc(void) | |
2333 | { | |
f25fce3e | 2334 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2335 | } |
2336 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2337 | ||
2338 | void security_secmark_refcount_dec(void) | |
2339 | { | |
f25fce3e | 2340 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2341 | } |
2342 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2343 | ||
5dbbaf2d PM |
2344 | int security_tun_dev_alloc_security(void **security) |
2345 | { | |
f25fce3e | 2346 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2347 | } |
2348 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2349 | ||
2350 | void security_tun_dev_free_security(void *security) | |
2351 | { | |
f25fce3e | 2352 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2353 | } |
2354 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2355 | ||
2b980dbd PM |
2356 | int security_tun_dev_create(void) |
2357 | { | |
f25fce3e | 2358 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2359 | } |
2360 | EXPORT_SYMBOL(security_tun_dev_create); | |
2361 | ||
5dbbaf2d | 2362 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2363 | { |
f25fce3e | 2364 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2365 | } |
5dbbaf2d | 2366 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2367 | |
5dbbaf2d | 2368 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2369 | { |
f25fce3e | 2370 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2371 | } |
2372 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2373 | ||
5dbbaf2d PM |
2374 | int security_tun_dev_open(void *security) |
2375 | { | |
f25fce3e | 2376 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2377 | } |
2378 | EXPORT_SYMBOL(security_tun_dev_open); | |
2379 | ||
72e89f50 RH |
2380 | int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) |
2381 | { | |
2382 | return call_int_hook(sctp_assoc_request, 0, ep, skb); | |
2383 | } | |
2384 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2385 | ||
2386 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2387 | struct sockaddr *address, int addrlen) | |
2388 | { | |
2389 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2390 | address, addrlen); | |
2391 | } | |
2392 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2393 | ||
2394 | void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, | |
2395 | struct sock *newsk) | |
2396 | { | |
2397 | call_void_hook(sctp_sk_clone, ep, sk, newsk); | |
2398 | } | |
2399 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2400 | ||
20510f2f JM |
2401 | #endif /* CONFIG_SECURITY_NETWORK */ |
2402 | ||
d291f1a6 DJ |
2403 | #ifdef CONFIG_SECURITY_INFINIBAND |
2404 | ||
2405 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2406 | { | |
2407 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2408 | } | |
2409 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2410 | ||
47a2b338 DJ |
2411 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2412 | { | |
2413 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2414 | } | |
2415 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2416 | ||
d291f1a6 DJ |
2417 | int security_ib_alloc_security(void **sec) |
2418 | { | |
2419 | return call_int_hook(ib_alloc_security, 0, sec); | |
2420 | } | |
2421 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2422 | ||
2423 | void security_ib_free_security(void *sec) | |
2424 | { | |
2425 | call_void_hook(ib_free_security, sec); | |
2426 | } | |
2427 | EXPORT_SYMBOL(security_ib_free_security); | |
2428 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2429 | ||
20510f2f JM |
2430 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2431 | ||
52a4c640 NA |
2432 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2433 | struct xfrm_user_sec_ctx *sec_ctx, | |
2434 | gfp_t gfp) | |
20510f2f | 2435 | { |
f25fce3e | 2436 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2437 | } |
2438 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2439 | ||
03e1ad7b PM |
2440 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2441 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2442 | { |
f25fce3e | 2443 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2444 | } |
2445 | ||
03e1ad7b | 2446 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2447 | { |
f25fce3e | 2448 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2449 | } |
2450 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2451 | ||
03e1ad7b | 2452 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2453 | { |
f25fce3e | 2454 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2455 | } |
2456 | ||
2e5aa866 PM |
2457 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2458 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2459 | { |
f25fce3e | 2460 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2461 | } |
2462 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2463 | ||
2464 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2465 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2466 | { | |
f25fce3e | 2467 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2468 | } |
2469 | ||
2470 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2471 | { | |
f25fce3e | 2472 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2473 | } |
2474 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2475 | ||
2476 | void security_xfrm_state_free(struct xfrm_state *x) | |
2477 | { | |
f25fce3e | 2478 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2479 | } |
2480 | ||
03e1ad7b | 2481 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
20510f2f | 2482 | { |
f25fce3e | 2483 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
20510f2f JM |
2484 | } |
2485 | ||
2486 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 | 2487 | struct xfrm_policy *xp, |
3df98d79 | 2488 | const struct flowi_common *flic) |
20510f2f | 2489 | { |
b1d9e6b0 | 2490 | struct security_hook_list *hp; |
98e828a0 | 2491 | int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match); |
b1d9e6b0 CS |
2492 | |
2493 | /* | |
2494 | * Since this function is expected to return 0 or 1, the judgment | |
2495 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2496 | * we can use the first LSM's judgment because currently only SELinux | |
2497 | * supplies this call. | |
2498 | * | |
2499 | * For speed optimization, we explicitly break the loop rather than | |
2500 | * using the macro | |
2501 | */ | |
df0ce173 | 2502 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 | 2503 | list) { |
3df98d79 | 2504 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic); |
b1d9e6b0 CS |
2505 | break; |
2506 | } | |
2507 | return rc; | |
20510f2f JM |
2508 | } |
2509 | ||
2510 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2511 | { | |
f25fce3e | 2512 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2513 | } |
2514 | ||
3df98d79 | 2515 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic) |
20510f2f | 2516 | { |
3df98d79 | 2517 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid, |
f25fce3e | 2518 | 0); |
20510f2f JM |
2519 | |
2520 | BUG_ON(rc); | |
2521 | } | |
2522 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2523 | ||
2524 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2525 | ||
2526 | #ifdef CONFIG_KEYS | |
2527 | ||
d84f4f99 DH |
2528 | int security_key_alloc(struct key *key, const struct cred *cred, |
2529 | unsigned long flags) | |
20510f2f | 2530 | { |
f25fce3e | 2531 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2532 | } |
2533 | ||
2534 | void security_key_free(struct key *key) | |
2535 | { | |
f25fce3e | 2536 | call_void_hook(key_free, key); |
20510f2f JM |
2537 | } |
2538 | ||
8c0637e9 DH |
2539 | int security_key_permission(key_ref_t key_ref, const struct cred *cred, |
2540 | enum key_need_perm need_perm) | |
20510f2f | 2541 | { |
8c0637e9 | 2542 | return call_int_hook(key_permission, 0, key_ref, cred, need_perm); |
20510f2f JM |
2543 | } |
2544 | ||
70a5bb72 DH |
2545 | int security_key_getsecurity(struct key *key, char **_buffer) |
2546 | { | |
b1d9e6b0 | 2547 | *_buffer = NULL; |
f25fce3e | 2548 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2549 | } |
2550 | ||
20510f2f | 2551 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2552 | |
2553 | #ifdef CONFIG_AUDIT | |
2554 | ||
2555 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2556 | { | |
f4d92e4c CS |
2557 | struct security_hook_list *hp; |
2558 | bool one_is_good = false; | |
2559 | int rc = 0; | |
2560 | int trc; | |
2561 | ||
2562 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_init, list) { | |
2563 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2564 | continue; | |
2565 | trc = hp->hook.audit_rule_init(field, op, rulestr, | |
2566 | &lsmrule[hp->lsmid->slot]); | |
2567 | if (trc == 0) | |
2568 | one_is_good = true; | |
2569 | else | |
2570 | rc = trc; | |
2571 | } | |
2572 | if (one_is_good) | |
2573 | return 0; | |
2574 | return rc; | |
03d37d25 AD |
2575 | } |
2576 | ||
2577 | int security_audit_rule_known(struct audit_krule *krule) | |
2578 | { | |
f25fce3e | 2579 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2580 | } |
2581 | ||
f4d92e4c | 2582 | void security_audit_rule_free(void **lsmrule) |
03d37d25 | 2583 | { |
f4d92e4c CS |
2584 | struct security_hook_list *hp; |
2585 | ||
2586 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_free, list) { | |
2587 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2588 | continue; | |
dc9ac6d8 CS |
2589 | if (lsmrule[hp->lsmid->slot] == NULL) |
2590 | continue; | |
f4d92e4c CS |
2591 | hp->hook.audit_rule_free(lsmrule[hp->lsmid->slot]); |
2592 | } | |
03d37d25 AD |
2593 | } |
2594 | ||
dc9ac6d8 CS |
2595 | int security_audit_rule_match(struct lsmblob *blob, u32 field, u32 op, |
2596 | void **lsmrule) | |
03d37d25 | 2597 | { |
f4d92e4c CS |
2598 | struct security_hook_list *hp; |
2599 | int rc; | |
2600 | ||
2601 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_match, list) { | |
2602 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2603 | continue; | |
dc9ac6d8 CS |
2604 | if (lsmrule[hp->lsmid->slot] == NULL) |
2605 | continue; | |
2606 | rc = hp->hook.audit_rule_match(blob->secid[hp->lsmid->slot], | |
2607 | field, op, | |
f4d92e4c CS |
2608 | &lsmrule[hp->lsmid->slot]); |
2609 | if (rc) | |
2610 | return rc; | |
2611 | } | |
2612 | return 0; | |
03d37d25 | 2613 | } |
b1d9e6b0 | 2614 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2615 | |
2616 | #ifdef CONFIG_BPF_SYSCALL | |
2617 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2618 | { | |
2619 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2620 | } | |
2621 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2622 | { | |
2623 | return call_int_hook(bpf_map, 0, map, fmode); | |
2624 | } | |
2625 | int security_bpf_prog(struct bpf_prog *prog) | |
2626 | { | |
2627 | return call_int_hook(bpf_prog, 0, prog); | |
2628 | } | |
2629 | int security_bpf_map_alloc(struct bpf_map *map) | |
2630 | { | |
2631 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2632 | } | |
2633 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2634 | { | |
2635 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2636 | } | |
2637 | void security_bpf_map_free(struct bpf_map *map) | |
2638 | { | |
2639 | call_void_hook(bpf_map_free_security, map); | |
2640 | } | |
2641 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2642 | { | |
2643 | call_void_hook(bpf_prog_free_security, aux); | |
2644 | } | |
2645 | #endif /* CONFIG_BPF_SYSCALL */ | |
9e47d31d MG |
2646 | |
2647 | int security_locked_down(enum lockdown_reason what) | |
2648 | { | |
2649 | return call_int_hook(locked_down, 0, what); | |
2650 | } | |
2651 | EXPORT_SYMBOL(security_locked_down); | |
da97e184 | 2652 | |
424c4cef JC |
2653 | int security_lock_kernel_down(const char *where, enum lockdown_reason level) |
2654 | { | |
2655 | return call_int_hook(lock_kernel_down, 0, where, level); | |
2656 | } | |
2657 | EXPORT_SYMBOL(security_lock_kernel_down); | |
2658 | ||
da97e184 JFG |
2659 | #ifdef CONFIG_PERF_EVENTS |
2660 | int security_perf_event_open(struct perf_event_attr *attr, int type) | |
2661 | { | |
2662 | return call_int_hook(perf_event_open, 0, attr, type); | |
2663 | } | |
2664 | ||
2665 | int security_perf_event_alloc(struct perf_event *event) | |
2666 | { | |
2667 | return call_int_hook(perf_event_alloc, 0, event); | |
2668 | } | |
2669 | ||
2670 | void security_perf_event_free(struct perf_event *event) | |
2671 | { | |
2672 | call_void_hook(perf_event_free, event); | |
2673 | } | |
2674 | ||
2675 | int security_perf_event_read(struct perf_event *event) | |
2676 | { | |
2677 | return call_int_hook(perf_event_read, 0, event); | |
2678 | } | |
2679 | ||
2680 | int security_perf_event_write(struct perf_event *event) | |
2681 | { | |
2682 | return call_int_hook(perf_event_write, 0, event); | |
2683 | } | |
2684 | #endif /* CONFIG_PERF_EVENTS */ |