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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Security plug functions | |
4 | * | |
5 | * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> | |
6 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
7 | * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> | |
d291f1a6 | 8 | * Copyright (C) 2016 Mellanox Technologies |
1da177e4 LT |
9 | */ |
10 | ||
9b8c7c14 KC |
11 | #define pr_fmt(fmt) "LSM: " fmt |
12 | ||
afdb09c7 | 13 | #include <linux/bpf.h> |
c59ede7b | 14 | #include <linux/capability.h> |
d47be3df | 15 | #include <linux/dcache.h> |
876979c9 | 16 | #include <linux/export.h> |
1da177e4 LT |
17 | #include <linux/init.h> |
18 | #include <linux/kernel.h> | |
b89999d0 | 19 | #include <linux/kernel_read_file.h> |
3c4ed7bd | 20 | #include <linux/lsm_hooks.h> |
f381c272 | 21 | #include <linux/integrity.h> |
6c21a7fb | 22 | #include <linux/ima.h> |
3e1be52d | 23 | #include <linux/evm.h> |
40401530 | 24 | #include <linux/fsnotify.h> |
8b3ec681 AV |
25 | #include <linux/mman.h> |
26 | #include <linux/mount.h> | |
27 | #include <linux/personality.h> | |
75331a59 | 28 | #include <linux/backing-dev.h> |
3bb857e4 | 29 | #include <linux/string.h> |
ecd5f82e | 30 | #include <linux/msg.h> |
40401530 | 31 | #include <net/flow.h> |
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; |
3ddd2931 CS |
80 | |
81 | /* | |
82 | * The task blob includes the "display" slot used for | |
83 | * chosing which module presents contexts. | |
84 | */ | |
85 | static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init = { | |
86 | .lbs_task = sizeof(int), | |
87 | }; | |
bbd3662a | 88 | |
076c54c5 | 89 | /* Boot-time LSM user choice */ |
79f7865d | 90 | static __initdata const char *chosen_lsm_order; |
5ef4e419 | 91 | static __initdata const char *chosen_major_lsm; |
1da177e4 | 92 | |
13e735c0 KC |
93 | static __initconst const char * const builtin_lsm_order = CONFIG_LSM; |
94 | ||
2d4d5119 KC |
95 | /* Ordered list of LSMs to initialize. */ |
96 | static __initdata struct lsm_info **ordered_lsms; | |
14bd99c8 | 97 | static __initdata struct lsm_info *exclusive; |
2d4d5119 | 98 | |
9b8c7c14 KC |
99 | static __initdata bool debug; |
100 | #define init_debug(...) \ | |
101 | do { \ | |
102 | if (debug) \ | |
103 | pr_info(__VA_ARGS__); \ | |
104 | } while (0) | |
105 | ||
f4941d75 KC |
106 | static bool __init is_enabled(struct lsm_info *lsm) |
107 | { | |
a8027fb0 KC |
108 | if (!lsm->enabled) |
109 | return false; | |
f4941d75 | 110 | |
a8027fb0 | 111 | return *lsm->enabled; |
f4941d75 KC |
112 | } |
113 | ||
114 | /* Mark an LSM's enabled flag. */ | |
115 | static int lsm_enabled_true __initdata = 1; | |
116 | static int lsm_enabled_false __initdata = 0; | |
117 | static void __init set_enabled(struct lsm_info *lsm, bool enabled) | |
118 | { | |
119 | /* | |
120 | * When an LSM hasn't configured an enable variable, we can use | |
121 | * a hard-coded location for storing the default enabled state. | |
122 | */ | |
123 | if (!lsm->enabled) { | |
124 | if (enabled) | |
125 | lsm->enabled = &lsm_enabled_true; | |
126 | else | |
127 | lsm->enabled = &lsm_enabled_false; | |
128 | } else if (lsm->enabled == &lsm_enabled_true) { | |
129 | if (!enabled) | |
130 | lsm->enabled = &lsm_enabled_false; | |
131 | } else if (lsm->enabled == &lsm_enabled_false) { | |
132 | if (enabled) | |
133 | lsm->enabled = &lsm_enabled_true; | |
134 | } else { | |
135 | *lsm->enabled = enabled; | |
136 | } | |
137 | } | |
138 | ||
2d4d5119 KC |
139 | /* Is an LSM already listed in the ordered LSMs list? */ |
140 | static bool __init exists_ordered_lsm(struct lsm_info *lsm) | |
141 | { | |
142 | struct lsm_info **check; | |
143 | ||
144 | for (check = ordered_lsms; *check; check++) | |
145 | if (*check == lsm) | |
146 | return true; | |
147 | ||
148 | return false; | |
149 | } | |
150 | ||
151 | /* Append an LSM to the list of ordered LSMs to initialize. */ | |
152 | static int last_lsm __initdata; | |
153 | static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from) | |
154 | { | |
155 | /* Ignore duplicate selections. */ | |
156 | if (exists_ordered_lsm(lsm)) | |
157 | return; | |
158 | ||
159 | if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from)) | |
160 | return; | |
161 | ||
a8027fb0 KC |
162 | /* Enable this LSM, if it is not already set. */ |
163 | if (!lsm->enabled) | |
164 | lsm->enabled = &lsm_enabled_true; | |
2d4d5119 | 165 | ordered_lsms[last_lsm++] = lsm; |
a8027fb0 | 166 | |
2d4d5119 KC |
167 | init_debug("%s ordering: %s (%sabled)\n", from, lsm->name, |
168 | is_enabled(lsm) ? "en" : "dis"); | |
169 | } | |
170 | ||
f4941d75 KC |
171 | /* Is an LSM allowed to be initialized? */ |
172 | static bool __init lsm_allowed(struct lsm_info *lsm) | |
173 | { | |
174 | /* Skip if the LSM is disabled. */ | |
175 | if (!is_enabled(lsm)) | |
176 | return false; | |
177 | ||
14bd99c8 KC |
178 | /* Not allowed if another exclusive LSM already initialized. */ |
179 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) { | |
180 | init_debug("exclusive disabled: %s\n", lsm->name); | |
181 | return false; | |
182 | } | |
183 | ||
f4941d75 KC |
184 | return true; |
185 | } | |
186 | ||
bbd3662a CS |
187 | static void __init lsm_set_blob_size(int *need, int *lbs) |
188 | { | |
189 | int offset; | |
190 | ||
191 | if (*need > 0) { | |
192 | offset = *lbs; | |
193 | *lbs += *need; | |
194 | *need = offset; | |
195 | } | |
196 | } | |
197 | ||
198 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
199 | { | |
200 | if (!needed) | |
201 | return; | |
202 | ||
203 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 204 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
205 | /* |
206 | * The inode blob gets an rcu_head in addition to | |
207 | * what the modules might need. | |
208 | */ | |
209 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
210 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
211 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
212 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
213 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
716eca8c | 214 | lsm_set_blob_size(&needed->lbs_sock, &blob_sizes.lbs_sock); |
f4ad8f2c | 215 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
216 | } |
217 | ||
d8e9bbd4 KC |
218 | /* Prepare LSM for initialization. */ |
219 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
220 | { |
221 | int enabled = lsm_allowed(lsm); | |
222 | ||
223 | /* Record enablement (to handle any following exclusive LSMs). */ | |
224 | set_enabled(lsm, enabled); | |
225 | ||
d8e9bbd4 | 226 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 227 | if (enabled) { |
14bd99c8 KC |
228 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
229 | exclusive = lsm; | |
230 | init_debug("exclusive chosen: %s\n", lsm->name); | |
231 | } | |
bbd3662a CS |
232 | |
233 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
234 | } |
235 | } | |
236 | ||
237 | /* Initialize a given LSM, if it is enabled. */ | |
238 | static void __init initialize_lsm(struct lsm_info *lsm) | |
239 | { | |
240 | if (is_enabled(lsm)) { | |
241 | int ret; | |
14bd99c8 | 242 | |
f4941d75 KC |
243 | init_debug("initializing %s\n", lsm->name); |
244 | ret = lsm->init(); | |
245 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
246 | } | |
247 | } | |
248 | ||
13e735c0 | 249 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 250 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
251 | { |
252 | struct lsm_info *lsm; | |
13e735c0 KC |
253 | char *sep, *name, *next; |
254 | ||
e2bc445b KC |
255 | /* LSM_ORDER_FIRST is always first. */ |
256 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
257 | if (lsm->order == LSM_ORDER_FIRST) | |
258 | append_ordered_lsm(lsm, "first"); | |
259 | } | |
260 | ||
7e611486 | 261 | /* Process "security=", if given. */ |
7e611486 KC |
262 | if (chosen_major_lsm) { |
263 | struct lsm_info *major; | |
264 | ||
265 | /* | |
266 | * To match the original "security=" behavior, this | |
267 | * explicitly does NOT fallback to another Legacy Major | |
268 | * if the selected one was separately disabled: disable | |
269 | * all non-matching Legacy Major LSMs. | |
270 | */ | |
271 | for (major = __start_lsm_info; major < __end_lsm_info; | |
272 | major++) { | |
273 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
274 | strcmp(major->name, chosen_major_lsm) != 0) { | |
275 | set_enabled(major, false); | |
276 | init_debug("security=%s disabled: %s\n", | |
277 | chosen_major_lsm, major->name); | |
278 | } | |
279 | } | |
280 | } | |
5ef4e419 | 281 | |
13e735c0 KC |
282 | sep = kstrdup(order, GFP_KERNEL); |
283 | next = sep; | |
284 | /* Walk the list, looking for matching LSMs. */ | |
285 | while ((name = strsep(&next, ",")) != NULL) { | |
286 | bool found = false; | |
287 | ||
288 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
289 | if (lsm->order == LSM_ORDER_MUTABLE && |
290 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
291 | append_ordered_lsm(lsm, origin); |
292 | found = true; | |
293 | } | |
294 | } | |
295 | ||
296 | if (!found) | |
297 | init_debug("%s ignored: %s\n", origin, name); | |
657d910b | 298 | } |
c91d8106 CS |
299 | |
300 | /* Process "security=", if given. */ | |
301 | if (chosen_major_lsm) { | |
302 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
303 | if (exists_ordered_lsm(lsm)) | |
304 | continue; | |
305 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
306 | append_ordered_lsm(lsm, "security="); | |
307 | } | |
308 | } | |
309 | ||
310 | /* Disable all LSMs not in the ordered list. */ | |
311 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
312 | if (exists_ordered_lsm(lsm)) | |
313 | continue; | |
314 | set_enabled(lsm, false); | |
315 | init_debug("%s disabled: %s\n", origin, lsm->name); | |
316 | } | |
317 | ||
13e735c0 | 318 | kfree(sep); |
657d910b KC |
319 | } |
320 | ||
1cfb2a51 TH |
321 | static void __init lsm_early_cred(struct cred *cred); |
322 | static void __init lsm_early_task(struct task_struct *task); | |
323 | ||
e6b1db98 MG |
324 | static int lsm_append(const char *new, char **result); |
325 | ||
2d4d5119 KC |
326 | static void __init ordered_lsm_init(void) |
327 | { | |
328 | struct lsm_info **lsm; | |
329 | ||
330 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
331 | GFP_KERNEL); | |
332 | ||
89a9684e KC |
333 | if (chosen_lsm_order) { |
334 | if (chosen_major_lsm) { | |
335 | pr_info("security= is ignored because it is superseded by lsm=\n"); | |
336 | chosen_major_lsm = NULL; | |
337 | } | |
79f7865d | 338 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 339 | } else |
79f7865d | 340 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
341 | |
342 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
343 | prepare_lsm(*lsm); |
344 | ||
bbd3662a | 345 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
33bf60ca | 346 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); |
afb1cbe3 | 347 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); |
ecd5f82e CS |
348 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); |
349 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
716eca8c | 350 | init_debug("sock blob size = %d\n", blob_sizes.lbs_sock); |
f4ad8f2c | 351 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); |
f4d92e4c | 352 | init_debug("lsmblob size = %zu\n", sizeof(struct lsmblob)); |
33bf60ca CS |
353 | |
354 | /* | |
355 | * Create any kmem_caches needed for blobs | |
356 | */ | |
357 | if (blob_sizes.lbs_file) | |
358 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
359 | blob_sizes.lbs_file, 0, | |
360 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
361 | if (blob_sizes.lbs_inode) |
362 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
363 | blob_sizes.lbs_inode, 0, | |
364 | SLAB_PANIC, NULL); | |
bbd3662a | 365 | |
1cfb2a51 TH |
366 | lsm_early_cred((struct cred *) current->cred); |
367 | lsm_early_task(current); | |
d8e9bbd4 KC |
368 | for (lsm = ordered_lsms; *lsm; lsm++) |
369 | initialize_lsm(*lsm); | |
2d4d5119 KC |
370 | |
371 | kfree(ordered_lsms); | |
372 | } | |
373 | ||
e6b1db98 MG |
374 | int __init early_security_init(void) |
375 | { | |
376 | int i; | |
377 | struct hlist_head *list = (struct hlist_head *) &security_hook_heads; | |
378 | struct lsm_info *lsm; | |
379 | ||
380 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head); | |
381 | i++) | |
382 | INIT_HLIST_HEAD(&list[i]); | |
383 | ||
384 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
385 | if (!lsm->enabled) | |
386 | lsm->enabled = &lsm_enabled_true; | |
387 | prepare_lsm(lsm); | |
388 | initialize_lsm(lsm); | |
389 | } | |
390 | ||
391 | return 0; | |
392 | } | |
393 | ||
1da177e4 LT |
394 | /** |
395 | * security_init - initializes the security framework | |
396 | * | |
397 | * This should be called early in the kernel initialization sequence. | |
398 | */ | |
399 | int __init security_init(void) | |
400 | { | |
e6b1db98 | 401 | struct lsm_info *lsm; |
3dfc9b02 | 402 | |
98d29170 KC |
403 | pr_info("Security Framework initializing\n"); |
404 | ||
e6b1db98 MG |
405 | /* |
406 | * Append the names of the early LSM modules now that kmalloc() is | |
407 | * available | |
408 | */ | |
409 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
410 | if (lsm->enabled) | |
411 | lsm_append(lsm->name, &lsm_names); | |
412 | } | |
1da177e4 | 413 | |
657d910b KC |
414 | /* Load LSMs in specified order. */ |
415 | ordered_lsm_init(); | |
416 | ||
1da177e4 LT |
417 | return 0; |
418 | } | |
419 | ||
076c54c5 | 420 | /* Save user chosen LSM */ |
5ef4e419 | 421 | static int __init choose_major_lsm(char *str) |
076c54c5 | 422 | { |
5ef4e419 | 423 | chosen_major_lsm = str; |
076c54c5 AD |
424 | return 1; |
425 | } | |
5ef4e419 | 426 | __setup("security=", choose_major_lsm); |
076c54c5 | 427 | |
79f7865d KC |
428 | /* Explicitly choose LSM initialization order. */ |
429 | static int __init choose_lsm_order(char *str) | |
430 | { | |
431 | chosen_lsm_order = str; | |
432 | return 1; | |
433 | } | |
434 | __setup("lsm=", choose_lsm_order); | |
435 | ||
9b8c7c14 KC |
436 | /* Enable LSM order debugging. */ |
437 | static int __init enable_debug(char *str) | |
438 | { | |
439 | debug = true; | |
440 | return 1; | |
441 | } | |
442 | __setup("lsm.debug", enable_debug); | |
443 | ||
3bb857e4 MS |
444 | static bool match_last_lsm(const char *list, const char *lsm) |
445 | { | |
446 | const char *last; | |
447 | ||
448 | if (WARN_ON(!list || !lsm)) | |
449 | return false; | |
450 | last = strrchr(list, ','); | |
451 | if (last) | |
452 | /* Pass the comma, strcmp() will check for '\0' */ | |
453 | last++; | |
454 | else | |
455 | last = list; | |
456 | return !strcmp(last, lsm); | |
457 | } | |
458 | ||
e6b1db98 | 459 | static int lsm_append(const char *new, char **result) |
d69dece5 CS |
460 | { |
461 | char *cp; | |
462 | ||
463 | if (*result == NULL) { | |
464 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
465 | if (*result == NULL) |
466 | return -ENOMEM; | |
d69dece5 | 467 | } else { |
3bb857e4 MS |
468 | /* Check if it is the last registered name */ |
469 | if (match_last_lsm(*result, new)) | |
470 | return 0; | |
d69dece5 CS |
471 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
472 | if (cp == NULL) | |
473 | return -ENOMEM; | |
474 | kfree(*result); | |
475 | *result = cp; | |
476 | } | |
477 | return 0; | |
478 | } | |
479 | ||
f4d92e4c CS |
480 | /* |
481 | * Current index to use while initializing the lsmblob secid list. | |
3ddd2931 | 482 | * Pointers to the LSM id structures for local use. |
f4d92e4c CS |
483 | */ |
484 | static int lsm_slot __lsm_ro_after_init; | |
f5c2b5f7 CS |
485 | static struct lsm_id *lsm_slotlist[LSMBLOB_ENTRIES] __lsm_ro_after_init; |
486 | ||
487 | /** | |
488 | * security_lsm_slot_name - Get the name of the security module in a slot | |
489 | * @slot: index into the "display" slot list. | |
490 | * | |
491 | * Provide the name of the security module associated with | |
492 | * a display slot. | |
493 | * | |
494 | * If @slot is LSMBLOB_INVALID return the value | |
495 | * for slot 0 if it has been set, otherwise NULL. | |
496 | * | |
497 | * Returns a pointer to the name string or NULL. | |
498 | */ | |
499 | const char *security_lsm_slot_name(int slot) | |
500 | { | |
501 | if (slot == LSMBLOB_INVALID) | |
502 | slot = 0; | |
503 | else if (slot >= LSMBLOB_ENTRIES || slot < 0) | |
504 | return NULL; | |
505 | ||
506 | if (lsm_slotlist[slot] == NULL) | |
507 | return NULL; | |
508 | return lsm_slotlist[slot]->lsm; | |
509 | } | |
f4d92e4c | 510 | |
d69dece5 CS |
511 | /** |
512 | * security_add_hooks - Add a modules hooks to the hook lists. | |
513 | * @hooks: the hooks to add | |
514 | * @count: the number of hooks to add | |
f4d92e4c | 515 | * @lsmid: the the identification information for the security module |
d69dece5 CS |
516 | * |
517 | * Each LSM has to register its hooks with the infrastructure. | |
f4d92e4c CS |
518 | * If the LSM is using hooks that export secids allocate a slot |
519 | * for it in the lsmblob. | |
d69dece5 CS |
520 | */ |
521 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
f4d92e4c | 522 | struct lsm_id *lsmid) |
d69dece5 CS |
523 | { |
524 | int i; | |
525 | ||
f4d92e4c CS |
526 | if (lsmid->slot == LSMBLOB_NEEDED) { |
527 | if (lsm_slot >= LSMBLOB_ENTRIES) | |
528 | panic("%s Too many LSMs registered.\n", __func__); | |
3ddd2931 | 529 | lsm_slotlist[lsm_slot] = lsmid; |
f4d92e4c CS |
530 | lsmid->slot = lsm_slot++; |
531 | init_debug("%s assigned lsmblob slot %d\n", lsmid->lsm, | |
532 | lsmid->slot); | |
533 | } | |
534 | ||
d69dece5 | 535 | for (i = 0; i < count; i++) { |
f4d92e4c | 536 | hooks[i].lsmid = lsmid; |
df0ce173 | 537 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
d69dece5 | 538 | } |
e6b1db98 MG |
539 | |
540 | /* | |
541 | * Don't try to append during early_security_init(), we'll come back | |
542 | * and fix this up afterwards. | |
543 | */ | |
544 | if (slab_is_available()) { | |
f4d92e4c | 545 | if (lsm_append(lsmid->lsm, &lsm_names) < 0) |
e6b1db98 MG |
546 | panic("%s - Cannot get early memory.\n", __func__); |
547 | } | |
d69dece5 CS |
548 | } |
549 | ||
42df744c | 550 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 551 | { |
42df744c JK |
552 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
553 | event, data); | |
8f408ab6 | 554 | } |
42df744c | 555 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 556 | |
42df744c | 557 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 558 | { |
42df744c JK |
559 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
560 | nb); | |
8f408ab6 | 561 | } |
42df744c | 562 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 563 | |
42df744c | 564 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 565 | { |
42df744c JK |
566 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
567 | nb); | |
8f408ab6 | 568 | } |
42df744c | 569 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 570 | |
bbd3662a CS |
571 | /** |
572 | * lsm_cred_alloc - allocate a composite cred blob | |
573 | * @cred: the cred that needs a blob | |
574 | * @gfp: allocation type | |
575 | * | |
576 | * Allocate the cred blob for all the modules | |
577 | * | |
578 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
579 | */ | |
580 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
581 | { | |
582 | if (blob_sizes.lbs_cred == 0) { | |
583 | cred->security = NULL; | |
584 | return 0; | |
585 | } | |
586 | ||
587 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
588 | if (cred->security == NULL) | |
589 | return -ENOMEM; | |
590 | return 0; | |
591 | } | |
592 | ||
593 | /** | |
594 | * lsm_early_cred - during initialization allocate a composite cred blob | |
595 | * @cred: the cred that needs a blob | |
596 | * | |
1cfb2a51 | 597 | * Allocate the cred blob for all the modules |
bbd3662a | 598 | */ |
1cfb2a51 | 599 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 600 | { |
1cfb2a51 | 601 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 602 | |
bbd3662a CS |
603 | if (rc) |
604 | panic("%s: Early cred alloc failed.\n", __func__); | |
605 | } | |
606 | ||
33bf60ca CS |
607 | /** |
608 | * lsm_file_alloc - allocate a composite file blob | |
609 | * @file: the file that needs a blob | |
610 | * | |
611 | * Allocate the file blob for all the modules | |
612 | * | |
613 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
614 | */ | |
615 | static int lsm_file_alloc(struct file *file) | |
616 | { | |
617 | if (!lsm_file_cache) { | |
618 | file->f_security = NULL; | |
619 | return 0; | |
620 | } | |
621 | ||
622 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
623 | if (file->f_security == NULL) | |
624 | return -ENOMEM; | |
625 | return 0; | |
626 | } | |
627 | ||
afb1cbe3 CS |
628 | /** |
629 | * lsm_inode_alloc - allocate a composite inode blob | |
630 | * @inode: the inode that needs a blob | |
631 | * | |
632 | * Allocate the inode blob for all the modules | |
633 | * | |
634 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
635 | */ | |
636 | int lsm_inode_alloc(struct inode *inode) | |
637 | { | |
638 | if (!lsm_inode_cache) { | |
639 | inode->i_security = NULL; | |
640 | return 0; | |
641 | } | |
642 | ||
643 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
644 | if (inode->i_security == NULL) | |
645 | return -ENOMEM; | |
646 | return 0; | |
647 | } | |
648 | ||
f4ad8f2c CS |
649 | /** |
650 | * lsm_task_alloc - allocate a composite task blob | |
651 | * @task: the task that needs a blob | |
652 | * | |
653 | * Allocate the task blob for all the modules | |
654 | * | |
655 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
656 | */ | |
3e8c7367 | 657 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c | 658 | { |
3ddd2931 CS |
659 | int *display; |
660 | ||
f4ad8f2c CS |
661 | if (blob_sizes.lbs_task == 0) { |
662 | task->security = NULL; | |
663 | return 0; | |
664 | } | |
665 | ||
666 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
667 | if (task->security == NULL) | |
668 | return -ENOMEM; | |
3ddd2931 CS |
669 | |
670 | /* | |
671 | * The start of the task blob contains the "display" LSM slot number. | |
672 | * Start with it set to the invalid slot number, indicating that the | |
673 | * default first registered LSM be displayed. | |
674 | */ | |
675 | display = task->security; | |
676 | *display = LSMBLOB_INVALID; | |
677 | ||
f4ad8f2c CS |
678 | return 0; |
679 | } | |
680 | ||
ecd5f82e CS |
681 | /** |
682 | * lsm_ipc_alloc - allocate a composite ipc blob | |
683 | * @kip: the ipc that needs a blob | |
684 | * | |
685 | * Allocate the ipc blob for all the modules | |
686 | * | |
687 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
688 | */ | |
3e8c7367 | 689 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
690 | { |
691 | if (blob_sizes.lbs_ipc == 0) { | |
692 | kip->security = NULL; | |
693 | return 0; | |
694 | } | |
695 | ||
696 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
697 | if (kip->security == NULL) | |
698 | return -ENOMEM; | |
699 | return 0; | |
700 | } | |
701 | ||
702 | /** | |
703 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
704 | * @mp: the msg_msg that needs a blob | |
705 | * | |
706 | * Allocate the ipc blob for all the modules | |
707 | * | |
708 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
709 | */ | |
3e8c7367 | 710 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
711 | { |
712 | if (blob_sizes.lbs_msg_msg == 0) { | |
713 | mp->security = NULL; | |
714 | return 0; | |
715 | } | |
716 | ||
717 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
718 | if (mp->security == NULL) | |
719 | return -ENOMEM; | |
720 | return 0; | |
721 | } | |
722 | ||
716eca8c CS |
723 | /** |
724 | * lsm_sock_alloc - allocate a composite sock blob | |
725 | * @sock: the sock that needs a blob | |
726 | * @priority: allocation mode | |
727 | * | |
728 | * Allocate the sock blob for all the modules | |
729 | * | |
730 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
731 | */ | |
732 | static int lsm_sock_alloc(struct sock *sock, gfp_t priority) | |
733 | { | |
734 | if (blob_sizes.lbs_sock == 0) { | |
735 | sock->sk_security = NULL; | |
736 | return 0; | |
737 | } | |
738 | ||
739 | sock->sk_security = kzalloc(blob_sizes.lbs_sock, priority); | |
740 | if (sock->sk_security == NULL) | |
741 | return -ENOMEM; | |
742 | return 0; | |
743 | } | |
744 | ||
f4ad8f2c CS |
745 | /** |
746 | * lsm_early_task - during initialization allocate a composite task blob | |
747 | * @task: the task that needs a blob | |
748 | * | |
1cfb2a51 | 749 | * Allocate the task blob for all the modules |
f4ad8f2c | 750 | */ |
1cfb2a51 | 751 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 752 | { |
1cfb2a51 | 753 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 754 | |
f4ad8f2c CS |
755 | if (rc) |
756 | panic("%s: Early task alloc failed.\n", __func__); | |
757 | } | |
758 | ||
2925d862 CS |
759 | /** |
760 | * append_ctx - append a lsm/context pair to a compound context | |
761 | * @ctx: the existing compound context | |
762 | * @ctxlen: size of the old context, including terminating nul byte | |
763 | * @lsm: new lsm name, nul terminated | |
764 | * @new: new context, possibly nul terminated | |
765 | * @newlen: maximum size of @new | |
766 | * | |
767 | * replace @ctx with a new compound context, appending @newlsm and @new | |
768 | * to @ctx. On exit the new data replaces the old, which is freed. | |
769 | * @ctxlen is set to the new size, which includes a trailing nul byte. | |
770 | * | |
771 | * Returns 0 on success, -ENOMEM if no memory is available. | |
772 | */ | |
773 | static int append_ctx(char **ctx, int *ctxlen, const char *lsm, char *new, | |
774 | int newlen) | |
775 | { | |
776 | char *final; | |
777 | size_t llen; | |
778 | size_t nlen; | |
779 | size_t flen; | |
780 | ||
781 | llen = strlen(lsm) + 1; | |
782 | /* | |
783 | * A security module may or may not provide a trailing nul on | |
784 | * when returning a security context. There is no definition | |
785 | * of which it should be, and there are modules that do it | |
786 | * each way. | |
787 | */ | |
788 | nlen = strnlen(new, newlen); | |
789 | ||
790 | flen = *ctxlen + llen + nlen + 1; | |
791 | final = kzalloc(flen, GFP_KERNEL); | |
792 | ||
793 | if (final == NULL) | |
794 | return -ENOMEM; | |
795 | ||
796 | if (*ctxlen) | |
797 | memcpy(final, *ctx, *ctxlen); | |
798 | ||
799 | memcpy(final + *ctxlen, lsm, llen); | |
800 | memcpy(final + *ctxlen + llen, new, nlen); | |
801 | ||
802 | kfree(*ctx); | |
803 | ||
804 | *ctx = final; | |
805 | *ctxlen = flen; | |
806 | ||
807 | return 0; | |
808 | } | |
809 | ||
98e828a0 KS |
810 | /* |
811 | * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and | |
812 | * can be accessed with: | |
813 | * | |
814 | * LSM_RET_DEFAULT(<hook_name>) | |
815 | * | |
816 | * The macros below define static constants for the default value of each | |
817 | * LSM hook. | |
818 | */ | |
819 | #define LSM_RET_DEFAULT(NAME) (NAME##_default) | |
820 | #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME) | |
821 | #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \ | |
822 | static const int LSM_RET_DEFAULT(NAME) = (DEFAULT); | |
823 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ | |
824 | DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME) | |
825 | ||
826 | #include <linux/lsm_hook_defs.h> | |
827 | #undef LSM_HOOK | |
828 | ||
f25fce3e | 829 | /* |
b1d9e6b0 | 830 | * Hook list operation macros. |
1da177e4 | 831 | * |
f25fce3e CS |
832 | * call_void_hook: |
833 | * This is a hook that does not return a value. | |
1da177e4 | 834 | * |
f25fce3e CS |
835 | * call_int_hook: |
836 | * This is a hook that returns a value. | |
1da177e4 | 837 | */ |
1da177e4 | 838 | |
b1d9e6b0 CS |
839 | #define call_void_hook(FUNC, ...) \ |
840 | do { \ | |
841 | struct security_hook_list *P; \ | |
842 | \ | |
df0ce173 | 843 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
844 | P->hook.FUNC(__VA_ARGS__); \ |
845 | } while (0) | |
846 | ||
847 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
848 | int RC = IRC; \ | |
849 | do { \ | |
850 | struct security_hook_list *P; \ | |
851 | \ | |
df0ce173 | 852 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
853 | RC = P->hook.FUNC(__VA_ARGS__); \ |
854 | if (RC != 0) \ | |
855 | break; \ | |
856 | } \ | |
857 | } while (0); \ | |
858 | RC; \ | |
859 | }) | |
1da177e4 | 860 | |
20510f2f JM |
861 | /* Security operations */ |
862 | ||
79af7307 SS |
863 | int security_binder_set_context_mgr(struct task_struct *mgr) |
864 | { | |
f25fce3e | 865 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 | 866 | } |
2e0647d3 | 867 | EXPORT_SYMBOL(security_binder_set_context_mgr); |
79af7307 | 868 | |
0bf1c724 CS |
869 | /** |
870 | * security_binder_transaction - Binder driver transaction check | |
871 | * @from: source of the transaction | |
872 | * @to: destination of the transaction | |
873 | * | |
874 | * Verify that the tasks have the same LSM "display", then | |
875 | * call the security module hooks. | |
876 | * | |
877 | * Returns -EINVAL if the displays don't match, or the | |
878 | * result of the security module checks. | |
879 | */ | |
79af7307 SS |
880 | int security_binder_transaction(struct task_struct *from, |
881 | struct task_struct *to) | |
882 | { | |
0bf1c724 CS |
883 | int from_display = lsm_task_display(from); |
884 | int to_display = lsm_task_display(to); | |
885 | ||
886 | /* | |
887 | * If the display is LSMBLOB_INVALID the first module that has | |
888 | * an entry is used. This will be in the 0 slot. | |
889 | * | |
890 | * This is currently only required if the server has requested | |
891 | * peer contexts, but it would be unwieldly to have too much of | |
892 | * the binder driver detail here. | |
893 | */ | |
894 | if (from_display == LSMBLOB_INVALID) | |
895 | from_display = 0; | |
896 | if (to_display == LSMBLOB_INVALID) | |
897 | to_display = 0; | |
898 | if (from_display != to_display) | |
899 | return -EINVAL; | |
900 | ||
f25fce3e | 901 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 | 902 | } |
2e0647d3 | 903 | EXPORT_SYMBOL(security_binder_transaction); |
79af7307 SS |
904 | |
905 | int security_binder_transfer_binder(struct task_struct *from, | |
906 | struct task_struct *to) | |
907 | { | |
f25fce3e | 908 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 | 909 | } |
2e0647d3 | 910 | EXPORT_SYMBOL(security_binder_transfer_binder); |
79af7307 SS |
911 | |
912 | int security_binder_transfer_file(struct task_struct *from, | |
913 | struct task_struct *to, struct file *file) | |
914 | { | |
f25fce3e | 915 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 | 916 | } |
2e0647d3 | 917 | EXPORT_SYMBOL(security_binder_transfer_file); |
79af7307 | 918 | |
9e48858f | 919 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 920 | { |
f25fce3e | 921 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
922 | } |
923 | ||
924 | int security_ptrace_traceme(struct task_struct *parent) | |
925 | { | |
f25fce3e | 926 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
927 | } |
928 | ||
929 | int security_capget(struct task_struct *target, | |
930 | kernel_cap_t *effective, | |
931 | kernel_cap_t *inheritable, | |
932 | kernel_cap_t *permitted) | |
933 | { | |
f25fce3e CS |
934 | return call_int_hook(capget, 0, target, |
935 | effective, inheritable, permitted); | |
20510f2f JM |
936 | } |
937 | ||
d84f4f99 DH |
938 | int security_capset(struct cred *new, const struct cred *old, |
939 | const kernel_cap_t *effective, | |
940 | const kernel_cap_t *inheritable, | |
941 | const kernel_cap_t *permitted) | |
20510f2f | 942 | { |
f25fce3e CS |
943 | return call_int_hook(capset, 0, new, old, |
944 | effective, inheritable, permitted); | |
20510f2f JM |
945 | } |
946 | ||
c1a85a00 MM |
947 | int security_capable(const struct cred *cred, |
948 | struct user_namespace *ns, | |
949 | int cap, | |
950 | unsigned int opts) | |
20510f2f | 951 | { |
c1a85a00 | 952 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
953 | } |
954 | ||
20510f2f JM |
955 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
956 | { | |
f25fce3e | 957 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
958 | } |
959 | ||
960 | int security_quota_on(struct dentry *dentry) | |
961 | { | |
f25fce3e | 962 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
963 | } |
964 | ||
12b3052c | 965 | int security_syslog(int type) |
20510f2f | 966 | { |
f25fce3e | 967 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
968 | } |
969 | ||
457db29b | 970 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 971 | { |
f25fce3e | 972 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
973 | } |
974 | ||
20510f2f JM |
975 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
976 | { | |
b1d9e6b0 CS |
977 | struct security_hook_list *hp; |
978 | int cap_sys_admin = 1; | |
979 | int rc; | |
980 | ||
981 | /* | |
982 | * The module will respond with a positive value if | |
983 | * it thinks the __vm_enough_memory() call should be | |
984 | * made with the cap_sys_admin set. If all of the modules | |
985 | * agree that it should be set it will. If any module | |
986 | * thinks it should not be set it won't. | |
987 | */ | |
df0ce173 | 988 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
989 | rc = hp->hook.vm_enough_memory(mm, pages); |
990 | if (rc <= 0) { | |
991 | cap_sys_admin = 0; | |
992 | break; | |
993 | } | |
994 | } | |
995 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
996 | } |
997 | ||
b8bff599 | 998 | int security_bprm_creds_for_exec(struct linux_binprm *bprm) |
20510f2f | 999 | { |
b8bff599 EB |
1000 | return call_int_hook(bprm_creds_for_exec, 0, bprm); |
1001 | } | |
1002 | ||
56305aa9 | 1003 | int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file) |
20510f2f | 1004 | { |
56305aa9 | 1005 | return call_int_hook(bprm_creds_from_file, 0, bprm, file); |
20510f2f JM |
1006 | } |
1007 | ||
a6f76f23 | 1008 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 1009 | { |
6c21a7fb MZ |
1010 | int ret; |
1011 | ||
f25fce3e | 1012 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
1013 | if (ret) |
1014 | return ret; | |
1015 | return ima_bprm_check(bprm); | |
20510f2f JM |
1016 | } |
1017 | ||
a6f76f23 | 1018 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 1019 | { |
f25fce3e | 1020 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
1021 | } |
1022 | ||
a6f76f23 | 1023 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 1024 | { |
f25fce3e | 1025 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
1026 | } |
1027 | ||
0b52075e AV |
1028 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
1029 | { | |
1030 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
1031 | } | |
1032 | ||
da2441fd DH |
1033 | int security_fs_context_parse_param(struct fs_context *fc, struct fs_parameter *param) |
1034 | { | |
1035 | return call_int_hook(fs_context_parse_param, -ENOPARAM, fc, param); | |
1036 | } | |
1037 | ||
20510f2f JM |
1038 | int security_sb_alloc(struct super_block *sb) |
1039 | { | |
f25fce3e | 1040 | return call_int_hook(sb_alloc_security, 0, sb); |
20510f2f JM |
1041 | } |
1042 | ||
1043 | void security_sb_free(struct super_block *sb) | |
1044 | { | |
f25fce3e | 1045 | call_void_hook(sb_free_security, sb); |
20510f2f JM |
1046 | } |
1047 | ||
204cc0cc | 1048 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 1049 | { |
204cc0cc AV |
1050 | if (!*mnt_opts) |
1051 | return; | |
1052 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
1053 | *mnt_opts = NULL; | |
20510f2f | 1054 | } |
204cc0cc | 1055 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 1056 | |
204cc0cc | 1057 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 1058 | { |
204cc0cc | 1059 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 1060 | } |
f5c0c26d | 1061 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 1062 | |
c039bc3c | 1063 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 1064 | void *mnt_opts) |
20510f2f | 1065 | { |
204cc0cc | 1066 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 1067 | } |
a65001e8 | 1068 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 1069 | |
a10d7c22 | 1070 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 1071 | { |
a10d7c22 | 1072 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
1073 | } |
1074 | ||
2069f457 EP |
1075 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
1076 | { | |
f25fce3e | 1077 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
1078 | } |
1079 | ||
20510f2f JM |
1080 | int security_sb_statfs(struct dentry *dentry) |
1081 | { | |
f25fce3e | 1082 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
1083 | } |
1084 | ||
8a04c43b | 1085 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 1086 | const char *type, unsigned long flags, void *data) |
20510f2f | 1087 | { |
f25fce3e | 1088 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
1089 | } |
1090 | ||
20510f2f JM |
1091 | int security_sb_umount(struct vfsmount *mnt, int flags) |
1092 | { | |
f25fce3e | 1093 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
1094 | } |
1095 | ||
3b73b68c | 1096 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 1097 | { |
f25fce3e | 1098 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
1099 | } |
1100 | ||
c9180a57 | 1101 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 1102 | void *mnt_opts, |
649f6e77 DQ |
1103 | unsigned long kern_flags, |
1104 | unsigned long *set_kern_flags) | |
c9180a57 | 1105 | { |
b1d9e6b0 | 1106 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
1107 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
1108 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 1109 | } |
e0007529 | 1110 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 1111 | |
094f7b69 | 1112 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
1113 | struct super_block *newsb, |
1114 | unsigned long kern_flags, | |
1115 | unsigned long *set_kern_flags) | |
c9180a57 | 1116 | { |
0b4d3452 SM |
1117 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
1118 | kern_flags, set_kern_flags); | |
c9180a57 | 1119 | } |
e0007529 EP |
1120 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
1121 | ||
757cbe59 AV |
1122 | int security_add_mnt_opt(const char *option, const char *val, int len, |
1123 | void **mnt_opts) | |
e0007529 | 1124 | { |
757cbe59 AV |
1125 | return call_int_hook(sb_add_mnt_opt, -EINVAL, |
1126 | option, val, len, mnt_opts); | |
e0007529 | 1127 | } |
757cbe59 | 1128 | EXPORT_SYMBOL(security_add_mnt_opt); |
c9180a57 | 1129 | |
2db154b3 DH |
1130 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
1131 | { | |
1132 | return call_int_hook(move_mount, 0, from_path, to_path); | |
1133 | } | |
1134 | ||
ac5656d8 AG |
1135 | int security_path_notify(const struct path *path, u64 mask, |
1136 | unsigned int obj_type) | |
1137 | { | |
1138 | return call_int_hook(path_notify, 0, path, mask, obj_type); | |
1139 | } | |
1140 | ||
20510f2f JM |
1141 | int security_inode_alloc(struct inode *inode) |
1142 | { | |
afb1cbe3 CS |
1143 | int rc = lsm_inode_alloc(inode); |
1144 | ||
1145 | if (unlikely(rc)) | |
1146 | return rc; | |
1147 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
1148 | if (unlikely(rc)) | |
1149 | security_inode_free(inode); | |
1150 | return rc; | |
1151 | } | |
1152 | ||
1153 | static void inode_free_by_rcu(struct rcu_head *head) | |
1154 | { | |
1155 | /* | |
1156 | * The rcu head is at the start of the inode blob | |
1157 | */ | |
1158 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
1159 | } |
1160 | ||
1161 | void security_inode_free(struct inode *inode) | |
1162 | { | |
f381c272 | 1163 | integrity_inode_free(inode); |
f25fce3e | 1164 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
1165 | /* |
1166 | * The inode may still be referenced in a path walk and | |
1167 | * a call to security_inode_permission() can be made | |
1168 | * after inode_free_security() is called. Ideally, the VFS | |
1169 | * wouldn't do this, but fixing that is a much harder | |
1170 | * job. For now, simply free the i_security via RCU, and | |
1171 | * leave the current inode->i_security pointer intact. | |
1172 | * The inode will be freed after the RCU grace period too. | |
1173 | */ | |
1174 | if (inode->i_security) | |
1175 | call_rcu((struct rcu_head *)inode->i_security, | |
1176 | inode_free_by_rcu); | |
20510f2f JM |
1177 | } |
1178 | ||
d47be3df | 1179 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 1180 | const struct qstr *name, void **ctx, |
d47be3df DQ |
1181 | u32 *ctxlen) |
1182 | { | |
b1d9e6b0 CS |
1183 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
1184 | name, ctx, ctxlen); | |
d47be3df DQ |
1185 | } |
1186 | EXPORT_SYMBOL(security_dentry_init_security); | |
1187 | ||
2602625b VG |
1188 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
1189 | struct qstr *name, | |
1190 | const struct cred *old, struct cred *new) | |
1191 | { | |
1192 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
1193 | name, old, new); | |
1194 | } | |
1195 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
1196 | ||
20510f2f | 1197 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
1198 | const struct qstr *qstr, |
1199 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 1200 | { |
823eb1cc MZ |
1201 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
1202 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
1203 | int ret; |
1204 | ||
20510f2f | 1205 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 1206 | return 0; |
9d8f13ba | 1207 | |
9d8f13ba | 1208 | if (!initxattrs) |
e308fd3b JB |
1209 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
1210 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 1211 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 1212 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 1213 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
1214 | &lsm_xattr->name, |
1215 | &lsm_xattr->value, | |
1216 | &lsm_xattr->value_len); | |
1217 | if (ret) | |
1218 | goto out; | |
823eb1cc MZ |
1219 | |
1220 | evm_xattr = lsm_xattr + 1; | |
1221 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1222 | if (ret) | |
1223 | goto out; | |
9d8f13ba MZ |
1224 | ret = initxattrs(inode, new_xattrs, fs_data); |
1225 | out: | |
9548906b | 1226 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1227 | kfree(xattr->value); |
9d8f13ba MZ |
1228 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1229 | } | |
1230 | EXPORT_SYMBOL(security_inode_init_security); | |
1231 | ||
1232 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, | |
9548906b | 1233 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1234 | void **value, size_t *len) |
20510f2f JM |
1235 | { |
1236 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1237 | return -EOPNOTSUPP; |
e308fd3b JB |
1238 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1239 | qstr, name, value, len); | |
20510f2f | 1240 | } |
9d8f13ba | 1241 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1242 | |
be6d3e56 | 1243 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1244 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1245 | unsigned int dev) |
1246 | { | |
c6f493d6 | 1247 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1248 | return 0; |
f25fce3e | 1249 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1250 | } |
1251 | EXPORT_SYMBOL(security_path_mknod); | |
1252 | ||
d3607752 | 1253 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1254 | { |
c6f493d6 | 1255 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1256 | return 0; |
f25fce3e | 1257 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1258 | } |
82140443 | 1259 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1260 | |
989f74e0 | 1261 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1262 | { |
c6f493d6 | 1263 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1264 | return 0; |
f25fce3e | 1265 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 | 1266 | } |
0d331203 | 1267 | EXPORT_SYMBOL_GPL(security_path_rmdir); |
be6d3e56 | 1268 | |
989f74e0 | 1269 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1270 | { |
c6f493d6 | 1271 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1272 | return 0; |
f25fce3e | 1273 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1274 | } |
82140443 | 1275 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1276 | |
d3607752 | 1277 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1278 | const char *old_name) |
1279 | { | |
c6f493d6 | 1280 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1281 | return 0; |
f25fce3e | 1282 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 | 1283 | } |
0d331203 | 1284 | EXPORT_SYMBOL_GPL(security_path_symlink); |
be6d3e56 | 1285 | |
3ccee46a | 1286 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1287 | struct dentry *new_dentry) |
1288 | { | |
c6f493d6 | 1289 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1290 | return 0; |
f25fce3e | 1291 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 | 1292 | } |
0d331203 | 1293 | EXPORT_SYMBOL_GPL(security_path_link); |
be6d3e56 | 1294 | |
3ccee46a AV |
1295 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1296 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1297 | unsigned int flags) |
be6d3e56 | 1298 | { |
c6f493d6 DH |
1299 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1300 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1301 | return 0; |
da1ce067 MS |
1302 | |
1303 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1304 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1305 | old_dir, old_dentry); | |
da1ce067 MS |
1306 | if (err) |
1307 | return err; | |
1308 | } | |
1309 | ||
f25fce3e CS |
1310 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1311 | new_dentry); | |
be6d3e56 | 1312 | } |
82140443 | 1313 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1314 | |
81f4c506 | 1315 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1316 | { |
c6f493d6 | 1317 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1318 | return 0; |
f25fce3e | 1319 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1320 | } |
0d331203 | 1321 | EXPORT_SYMBOL_GPL(security_path_truncate); |
89eda068 | 1322 | |
be01f9f2 | 1323 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1324 | { |
c6f493d6 | 1325 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1326 | return 0; |
f25fce3e | 1327 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 | 1328 | } |
0d331203 | 1329 | EXPORT_SYMBOL_GPL(security_path_chmod); |
89eda068 | 1330 | |
7fd25dac | 1331 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1332 | { |
c6f493d6 | 1333 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1334 | return 0; |
f25fce3e | 1335 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1336 | } |
0d331203 | 1337 | EXPORT_SYMBOL_GPL(security_path_chown); |
8b8efb44 | 1338 | |
77b286c0 | 1339 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1340 | { |
f25fce3e | 1341 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1342 | } |
be6d3e56 KT |
1343 | #endif |
1344 | ||
4acdaf27 | 1345 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1346 | { |
1347 | if (unlikely(IS_PRIVATE(dir))) | |
1348 | return 0; | |
f25fce3e | 1349 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1350 | } |
800a9647 | 1351 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1352 | |
1353 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1354 | struct dentry *new_dentry) | |
1355 | { | |
c6f493d6 | 1356 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1357 | return 0; |
f25fce3e | 1358 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1359 | } |
1360 | ||
1361 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1362 | { | |
c6f493d6 | 1363 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1364 | return 0; |
f25fce3e | 1365 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1366 | } |
1367 | ||
1368 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1369 | const char *old_name) | |
1370 | { | |
1371 | if (unlikely(IS_PRIVATE(dir))) | |
1372 | return 0; | |
f25fce3e | 1373 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1374 | } |
1375 | ||
18bb1db3 | 1376 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1377 | { |
1378 | if (unlikely(IS_PRIVATE(dir))) | |
1379 | return 0; | |
f25fce3e | 1380 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1381 | } |
800a9647 | 1382 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1383 | |
1384 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1385 | { | |
c6f493d6 | 1386 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1387 | return 0; |
f25fce3e | 1388 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1389 | } |
1390 | ||
1a67aafb | 1391 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1392 | { |
1393 | if (unlikely(IS_PRIVATE(dir))) | |
1394 | return 0; | |
f25fce3e | 1395 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1396 | } |
1397 | ||
1398 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1399 | struct inode *new_dir, struct dentry *new_dentry, |
1400 | unsigned int flags) | |
20510f2f | 1401 | { |
c6f493d6 DH |
1402 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1403 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1404 | return 0; |
da1ce067 MS |
1405 | |
1406 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1407 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1408 | old_dir, old_dentry); |
1409 | if (err) | |
1410 | return err; | |
1411 | } | |
1412 | ||
f25fce3e | 1413 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1414 | new_dir, new_dentry); |
1415 | } | |
1416 | ||
1417 | int security_inode_readlink(struct dentry *dentry) | |
1418 | { | |
c6f493d6 | 1419 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1420 | return 0; |
f25fce3e | 1421 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1422 | } |
1423 | ||
bda0be7a N |
1424 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1425 | bool rcu) | |
20510f2f | 1426 | { |
bda0be7a | 1427 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1428 | return 0; |
e22619a2 | 1429 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1430 | } |
1431 | ||
b77b0646 | 1432 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1433 | { |
1434 | if (unlikely(IS_PRIVATE(inode))) | |
1435 | return 0; | |
f25fce3e | 1436 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f | 1437 | } |
0d331203 | 1438 | EXPORT_SYMBOL_GPL(security_inode_permission); |
20510f2f JM |
1439 | |
1440 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1441 | { | |
817b54aa MZ |
1442 | int ret; |
1443 | ||
c6f493d6 | 1444 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1445 | return 0; |
f25fce3e | 1446 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1447 | if (ret) |
1448 | return ret; | |
1449 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1450 | } |
b1da47e2 | 1451 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1452 | |
3f7036a0 | 1453 | int security_inode_getattr(const struct path *path) |
20510f2f | 1454 | { |
c6f493d6 | 1455 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1456 | return 0; |
f25fce3e | 1457 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1458 | } |
1459 | ||
8f0cfa52 DH |
1460 | int security_inode_setxattr(struct dentry *dentry, const char *name, |
1461 | const void *value, size_t size, int flags) | |
20510f2f | 1462 | { |
3e1be52d MZ |
1463 | int ret; |
1464 | ||
c6f493d6 | 1465 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1466 | return 0; |
b1d9e6b0 CS |
1467 | /* |
1468 | * SELinux and Smack integrate the cap call, | |
1469 | * so assume that all LSMs supplying this call do so. | |
1470 | */ | |
1471 | ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, | |
f25fce3e | 1472 | flags); |
b1d9e6b0 CS |
1473 | |
1474 | if (ret == 1) | |
1475 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1476 | if (ret) |
1477 | return ret; | |
1478 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1479 | if (ret) |
1480 | return ret; | |
1481 | return evm_inode_setxattr(dentry, name, value, size); | |
20510f2f JM |
1482 | } |
1483 | ||
8f0cfa52 DH |
1484 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1485 | const void *value, size_t size, int flags) | |
20510f2f | 1486 | { |
c6f493d6 | 1487 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1488 | return; |
f25fce3e | 1489 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1490 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1491 | } |
1492 | ||
8f0cfa52 | 1493 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1494 | { |
c6f493d6 | 1495 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1496 | return 0; |
f25fce3e | 1497 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1498 | } |
1499 | ||
1500 | int security_inode_listxattr(struct dentry *dentry) | |
1501 | { | |
c6f493d6 | 1502 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1503 | return 0; |
f25fce3e | 1504 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1505 | } |
1506 | ||
8f0cfa52 | 1507 | int security_inode_removexattr(struct dentry *dentry, const char *name) |
20510f2f | 1508 | { |
3e1be52d MZ |
1509 | int ret; |
1510 | ||
c6f493d6 | 1511 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1512 | return 0; |
b1d9e6b0 CS |
1513 | /* |
1514 | * SELinux and Smack integrate the cap call, | |
1515 | * so assume that all LSMs supplying this call do so. | |
1516 | */ | |
1517 | ret = call_int_hook(inode_removexattr, 1, dentry, name); | |
1518 | if (ret == 1) | |
1519 | ret = cap_inode_removexattr(dentry, name); | |
42c63330 MZ |
1520 | if (ret) |
1521 | return ret; | |
1522 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1523 | if (ret) |
1524 | return ret; | |
1525 | return evm_inode_removexattr(dentry, name); | |
20510f2f JM |
1526 | } |
1527 | ||
b5376771 SH |
1528 | int security_inode_need_killpriv(struct dentry *dentry) |
1529 | { | |
f25fce3e | 1530 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1531 | } |
1532 | ||
1533 | int security_inode_killpriv(struct dentry *dentry) | |
1534 | { | |
f25fce3e | 1535 | return call_int_hook(inode_killpriv, 0, dentry); |
b5376771 SH |
1536 | } |
1537 | ||
ea861dfd | 1538 | int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) |
20510f2f | 1539 | { |
2885c1e3 CS |
1540 | struct security_hook_list *hp; |
1541 | int rc; | |
1542 | ||
20510f2f | 1543 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1544 | return LSM_RET_DEFAULT(inode_getsecurity); |
2885c1e3 CS |
1545 | /* |
1546 | * Only one module will provide an attribute with a given name. | |
1547 | */ | |
df0ce173 | 1548 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
2885c1e3 | 1549 | rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); |
98e828a0 | 1550 | if (rc != LSM_RET_DEFAULT(inode_getsecurity)) |
2885c1e3 CS |
1551 | return rc; |
1552 | } | |
98e828a0 | 1553 | return LSM_RET_DEFAULT(inode_getsecurity); |
20510f2f JM |
1554 | } |
1555 | ||
1556 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1557 | { | |
2885c1e3 CS |
1558 | struct security_hook_list *hp; |
1559 | int rc; | |
1560 | ||
20510f2f | 1561 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1562 | return LSM_RET_DEFAULT(inode_setsecurity); |
2885c1e3 CS |
1563 | /* |
1564 | * Only one module will provide an attribute with a given name. | |
1565 | */ | |
df0ce173 | 1566 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1567 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1568 | flags); | |
98e828a0 | 1569 | if (rc != LSM_RET_DEFAULT(inode_setsecurity)) |
2885c1e3 CS |
1570 | return rc; |
1571 | } | |
98e828a0 | 1572 | return LSM_RET_DEFAULT(inode_setsecurity); |
20510f2f JM |
1573 | } |
1574 | ||
1575 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1576 | { | |
1577 | if (unlikely(IS_PRIVATE(inode))) | |
1578 | return 0; | |
f25fce3e | 1579 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1580 | } |
c9bccef6 | 1581 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1582 | |
abc734db | 1583 | void security_inode_getsecid(struct inode *inode, struct lsmblob *blob) |
8a076191 | 1584 | { |
abc734db CS |
1585 | struct security_hook_list *hp; |
1586 | ||
1587 | lsmblob_init(blob, 0); | |
1588 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecid, list) { | |
1589 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
1590 | continue; | |
1591 | hp->hook.inode_getsecid(inode, &blob->secid[hp->lsmid->slot]); | |
1592 | } | |
8a076191 AD |
1593 | } |
1594 | ||
d8ad8b49 VG |
1595 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1596 | { | |
1597 | return call_int_hook(inode_copy_up, 0, src, new); | |
1598 | } | |
1599 | EXPORT_SYMBOL(security_inode_copy_up); | |
1600 | ||
121ab822 VG |
1601 | int security_inode_copy_up_xattr(const char *name) |
1602 | { | |
23e390cd KS |
1603 | struct security_hook_list *hp; |
1604 | int rc; | |
1605 | ||
1606 | /* | |
1607 | * The implementation can return 0 (accept the xattr), 1 (discard the | |
1608 | * xattr), -EOPNOTSUPP if it does not know anything about the xattr or | |
1609 | * any other error code incase of an error. | |
1610 | */ | |
1611 | hlist_for_each_entry(hp, | |
1612 | &security_hook_heads.inode_copy_up_xattr, list) { | |
1613 | rc = hp->hook.inode_copy_up_xattr(name); | |
1614 | if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr)) | |
1615 | return rc; | |
1616 | } | |
1617 | ||
1618 | return LSM_RET_DEFAULT(inode_copy_up_xattr); | |
121ab822 VG |
1619 | } |
1620 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1621 | ||
b230d5ab OM |
1622 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1623 | struct kernfs_node *kn) | |
1624 | { | |
1625 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1626 | } | |
1627 | ||
20510f2f JM |
1628 | int security_file_permission(struct file *file, int mask) |
1629 | { | |
c4ec54b4 EP |
1630 | int ret; |
1631 | ||
f25fce3e | 1632 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1633 | if (ret) |
1634 | return ret; | |
1635 | ||
1636 | return fsnotify_perm(file, mask); | |
20510f2f | 1637 | } |
0d331203 | 1638 | EXPORT_SYMBOL_GPL(security_file_permission); |
20510f2f JM |
1639 | |
1640 | int security_file_alloc(struct file *file) | |
1641 | { | |
33bf60ca CS |
1642 | int rc = lsm_file_alloc(file); |
1643 | ||
1644 | if (rc) | |
1645 | return rc; | |
1646 | rc = call_int_hook(file_alloc_security, 0, file); | |
1647 | if (unlikely(rc)) | |
1648 | security_file_free(file); | |
1649 | return rc; | |
20510f2f JM |
1650 | } |
1651 | ||
1652 | void security_file_free(struct file *file) | |
1653 | { | |
33bf60ca CS |
1654 | void *blob; |
1655 | ||
f25fce3e | 1656 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1657 | |
1658 | blob = file->f_security; | |
1659 | if (blob) { | |
1660 | file->f_security = NULL; | |
1661 | kmem_cache_free(lsm_file_cache, blob); | |
1662 | } | |
20510f2f JM |
1663 | } |
1664 | ||
1665 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1666 | { | |
f25fce3e | 1667 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f | 1668 | } |
292f902a | 1669 | EXPORT_SYMBOL_GPL(security_file_ioctl); |
20510f2f | 1670 | |
98de59bf | 1671 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1672 | { |
8b3ec681 | 1673 | /* |
98de59bf AV |
1674 | * Does we have PROT_READ and does the application expect |
1675 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1676 | */ |
98de59bf AV |
1677 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1678 | return prot; | |
8b3ec681 | 1679 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1680 | return prot; |
1681 | /* | |
1682 | * if that's an anonymous mapping, let it. | |
1683 | */ | |
1684 | if (!file) | |
1685 | return prot | PROT_EXEC; | |
1686 | /* | |
1687 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1688 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1689 | */ |
90f8572b | 1690 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1691 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1692 | if (file->f_op->mmap_capabilities) { |
1693 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1694 | if (!(caps & NOMMU_MAP_EXEC)) | |
1695 | return prot; | |
1696 | } | |
8b3ec681 | 1697 | #endif |
98de59bf | 1698 | return prot | PROT_EXEC; |
8b3ec681 | 1699 | } |
98de59bf AV |
1700 | /* anything on noexec mount won't get PROT_EXEC */ |
1701 | return prot; | |
1702 | } | |
1703 | ||
1704 | int security_mmap_file(struct file *file, unsigned long prot, | |
1705 | unsigned long flags) | |
1706 | { | |
1707 | int ret; | |
f25fce3e | 1708 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1709 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1710 | if (ret) |
1711 | return ret; | |
1712 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1713 | } |
1714 | ||
e5467859 AV |
1715 | int security_mmap_addr(unsigned long addr) |
1716 | { | |
f25fce3e | 1717 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1718 | } |
1719 | ||
20510f2f JM |
1720 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1721 | unsigned long prot) | |
1722 | { | |
8eb613c0 MZ |
1723 | int ret; |
1724 | ||
1725 | ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot); | |
1726 | if (ret) | |
1727 | return ret; | |
1728 | return ima_file_mprotect(vma, prot); | |
20510f2f JM |
1729 | } |
1730 | ||
1731 | int security_file_lock(struct file *file, unsigned int cmd) | |
1732 | { | |
f25fce3e | 1733 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1734 | } |
1735 | ||
1736 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1737 | { | |
f25fce3e | 1738 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1739 | } |
1740 | ||
e0b93edd | 1741 | void security_file_set_fowner(struct file *file) |
20510f2f | 1742 | { |
f25fce3e | 1743 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1744 | } |
1745 | ||
1746 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1747 | struct fown_struct *fown, int sig) | |
1748 | { | |
f25fce3e | 1749 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1750 | } |
1751 | ||
1752 | int security_file_receive(struct file *file) | |
1753 | { | |
f25fce3e | 1754 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1755 | } |
1756 | ||
e3f20ae2 | 1757 | int security_file_open(struct file *file) |
20510f2f | 1758 | { |
c4ec54b4 EP |
1759 | int ret; |
1760 | ||
94817692 | 1761 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1762 | if (ret) |
1763 | return ret; | |
1764 | ||
1765 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1766 | } |
1767 | ||
e4e55b47 TH |
1768 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1769 | { | |
3ddd2931 CS |
1770 | int *odisplay = current->security; |
1771 | int *ndisplay; | |
f4ad8f2c CS |
1772 | int rc = lsm_task_alloc(task); |
1773 | ||
3ddd2931 | 1774 | if (unlikely(rc)) |
f4ad8f2c | 1775 | return rc; |
3ddd2931 | 1776 | |
f4ad8f2c | 1777 | rc = call_int_hook(task_alloc, 0, task, clone_flags); |
3ddd2931 | 1778 | if (unlikely(rc)) { |
f4ad8f2c | 1779 | security_task_free(task); |
3ddd2931 CS |
1780 | return rc; |
1781 | } | |
1782 | ||
1783 | if (odisplay) { | |
1784 | ndisplay = task->security; | |
1785 | if (ndisplay) | |
1786 | *ndisplay = *odisplay; | |
1787 | } | |
1788 | ||
1789 | return 0; | |
e4e55b47 TH |
1790 | } |
1791 | ||
1a2a4d06 KC |
1792 | void security_task_free(struct task_struct *task) |
1793 | { | |
f25fce3e | 1794 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1795 | |
1796 | kfree(task->security); | |
1797 | task->security = NULL; | |
1a2a4d06 KC |
1798 | } |
1799 | ||
ee18d64c DH |
1800 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1801 | { | |
bbd3662a CS |
1802 | int rc = lsm_cred_alloc(cred, gfp); |
1803 | ||
1804 | if (rc) | |
1805 | return rc; | |
1806 | ||
1807 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1808 | if (unlikely(rc)) |
bbd3662a CS |
1809 | security_cred_free(cred); |
1810 | return rc; | |
ee18d64c DH |
1811 | } |
1812 | ||
d84f4f99 | 1813 | void security_cred_free(struct cred *cred) |
20510f2f | 1814 | { |
a5795fd3 JM |
1815 | /* |
1816 | * There is a failure case in prepare_creds() that | |
1817 | * may result in a call here with ->security being NULL. | |
1818 | */ | |
1819 | if (unlikely(cred->security == NULL)) | |
1820 | return; | |
1821 | ||
f25fce3e | 1822 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1823 | |
1824 | kfree(cred->security); | |
1825 | cred->security = NULL; | |
20510f2f JM |
1826 | } |
1827 | ||
d84f4f99 | 1828 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1829 | { |
bbd3662a CS |
1830 | int rc = lsm_cred_alloc(new, gfp); |
1831 | ||
1832 | if (rc) | |
1833 | return rc; | |
1834 | ||
1835 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1836 | if (unlikely(rc)) |
bbd3662a CS |
1837 | security_cred_free(new); |
1838 | return rc; | |
d84f4f99 DH |
1839 | } |
1840 | ||
ee18d64c DH |
1841 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1842 | { | |
f25fce3e | 1843 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1844 | } |
1845 | ||
ab9c17a8 | 1846 | void security_cred_getsecid(const struct cred *c, struct lsmblob *blob) |
3ec30113 | 1847 | { |
ab9c17a8 CS |
1848 | struct security_hook_list *hp; |
1849 | ||
1850 | lsmblob_init(blob, 0); | |
1851 | hlist_for_each_entry(hp, &security_hook_heads.cred_getsecid, list) { | |
1852 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
1853 | continue; | |
1854 | hp->hook.cred_getsecid(c, &blob->secid[hp->lsmid->slot]); | |
1855 | } | |
3ec30113 MG |
1856 | } |
1857 | EXPORT_SYMBOL(security_cred_getsecid); | |
1858 | ||
83741abe | 1859 | int security_kernel_act_as(struct cred *new, struct lsmblob *blob) |
3a3b7ce9 | 1860 | { |
83741abe CS |
1861 | struct security_hook_list *hp; |
1862 | int rc; | |
1863 | ||
1864 | hlist_for_each_entry(hp, &security_hook_heads.kernel_act_as, list) { | |
1865 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
1866 | continue; | |
1867 | rc = hp->hook.kernel_act_as(new, blob->secid[hp->lsmid->slot]); | |
1868 | if (rc != 0) | |
1869 | return rc; | |
1870 | } | |
1871 | return 0; | |
3a3b7ce9 DH |
1872 | } |
1873 | ||
1874 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1875 | { | |
f25fce3e | 1876 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1877 | } |
1878 | ||
dd8dbf2e | 1879 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1880 | { |
6eb864c1 MK |
1881 | int ret; |
1882 | ||
1883 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1884 | if (ret) | |
1885 | return ret; | |
1886 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1887 | } |
1888 | ||
2039bda1 KC |
1889 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, |
1890 | bool contents) | |
39eeb4fb MZ |
1891 | { |
1892 | int ret; | |
1893 | ||
2039bda1 | 1894 | ret = call_int_hook(kernel_read_file, 0, file, id, contents); |
39eeb4fb MZ |
1895 | if (ret) |
1896 | return ret; | |
2039bda1 | 1897 | return ima_read_file(file, id, contents); |
39eeb4fb MZ |
1898 | } |
1899 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1900 | ||
bc8ca5b9 MZ |
1901 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1902 | enum kernel_read_file_id id) | |
b44a7dfc | 1903 | { |
cf222217 MZ |
1904 | int ret; |
1905 | ||
1906 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1907 | if (ret) | |
1908 | return ret; | |
1909 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1910 | } |
1911 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1912 | ||
b64fcae7 | 1913 | int security_kernel_load_data(enum kernel_load_data_id id, bool contents) |
377179cd | 1914 | { |
16c267aa MZ |
1915 | int ret; |
1916 | ||
b64fcae7 | 1917 | ret = call_int_hook(kernel_load_data, 0, id, contents); |
16c267aa MZ |
1918 | if (ret) |
1919 | return ret; | |
b64fcae7 | 1920 | return ima_load_data(id, contents); |
377179cd | 1921 | } |
83a68a06 | 1922 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1923 | |
b64fcae7 KC |
1924 | int security_kernel_post_load_data(char *buf, loff_t size, |
1925 | enum kernel_load_data_id id, | |
1926 | char *description) | |
1927 | { | |
1928 | int ret; | |
1929 | ||
1930 | ret = call_int_hook(kernel_post_load_data, 0, buf, size, id, | |
1931 | description); | |
1932 | if (ret) | |
1933 | return ret; | |
1934 | return ima_post_load_data(buf, size, id, description); | |
1935 | } | |
1936 | EXPORT_SYMBOL_GPL(security_kernel_post_load_data); | |
1937 | ||
d84f4f99 DH |
1938 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1939 | int flags) | |
20510f2f | 1940 | { |
f25fce3e | 1941 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1942 | } |
1943 | ||
39030e13 TC |
1944 | int security_task_fix_setgid(struct cred *new, const struct cred *old, |
1945 | int flags) | |
1946 | { | |
1947 | return call_int_hook(task_fix_setgid, 0, new, old, flags); | |
1948 | } | |
1949 | ||
20510f2f JM |
1950 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1951 | { | |
f25fce3e | 1952 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1953 | } |
1954 | ||
1955 | int security_task_getpgid(struct task_struct *p) | |
1956 | { | |
f25fce3e | 1957 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1958 | } |
1959 | ||
1960 | int security_task_getsid(struct task_struct *p) | |
1961 | { | |
f25fce3e | 1962 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1963 | } |
1964 | ||
ffa754bb | 1965 | void security_task_getsecid(struct task_struct *p, struct lsmblob *blob) |
20510f2f | 1966 | { |
ffa754bb CS |
1967 | struct security_hook_list *hp; |
1968 | ||
1969 | lsmblob_init(blob, 0); | |
1970 | hlist_for_each_entry(hp, &security_hook_heads.task_getsecid, list) { | |
1971 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
1972 | continue; | |
1973 | hp->hook.task_getsecid(p, &blob->secid[hp->lsmid->slot]); | |
1974 | } | |
20510f2f JM |
1975 | } |
1976 | EXPORT_SYMBOL(security_task_getsecid); | |
1977 | ||
20510f2f JM |
1978 | int security_task_setnice(struct task_struct *p, int nice) |
1979 | { | |
f25fce3e | 1980 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1981 | } |
1982 | ||
1983 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1984 | { | |
f25fce3e | 1985 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1986 | } |
1987 | ||
1988 | int security_task_getioprio(struct task_struct *p) | |
1989 | { | |
f25fce3e | 1990 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1991 | } |
1992 | ||
791ec491 SS |
1993 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1994 | unsigned int flags) | |
1995 | { | |
1996 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1997 | } | |
1998 | ||
8fd00b4d JS |
1999 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
2000 | struct rlimit *new_rlim) | |
20510f2f | 2001 | { |
f25fce3e | 2002 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
2003 | } |
2004 | ||
b0ae1981 | 2005 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 2006 | { |
f25fce3e | 2007 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
2008 | } |
2009 | ||
2010 | int security_task_getscheduler(struct task_struct *p) | |
2011 | { | |
f25fce3e | 2012 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
2013 | } |
2014 | ||
2015 | int security_task_movememory(struct task_struct *p) | |
2016 | { | |
f25fce3e | 2017 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
2018 | } |
2019 | ||
ae7795bc | 2020 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 2021 | int sig, const struct cred *cred) |
20510f2f | 2022 | { |
6b4f3d01 | 2023 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
2024 | } |
2025 | ||
20510f2f | 2026 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 2027 | unsigned long arg4, unsigned long arg5) |
20510f2f | 2028 | { |
b1d9e6b0 | 2029 | int thisrc; |
98e828a0 | 2030 | int rc = LSM_RET_DEFAULT(task_prctl); |
b1d9e6b0 CS |
2031 | struct security_hook_list *hp; |
2032 | ||
df0ce173 | 2033 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 | 2034 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
98e828a0 | 2035 | if (thisrc != LSM_RET_DEFAULT(task_prctl)) { |
b1d9e6b0 CS |
2036 | rc = thisrc; |
2037 | if (thisrc != 0) | |
2038 | break; | |
2039 | } | |
2040 | } | |
2041 | return rc; | |
20510f2f JM |
2042 | } |
2043 | ||
2044 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
2045 | { | |
f25fce3e | 2046 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
2047 | } |
2048 | ||
2049 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
2050 | { | |
f25fce3e | 2051 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
2052 | } |
2053 | ||
f7e4e9c5 | 2054 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, struct lsmblob *blob) |
8a076191 | 2055 | { |
f7e4e9c5 CS |
2056 | struct security_hook_list *hp; |
2057 | ||
2058 | lsmblob_init(blob, 0); | |
2059 | hlist_for_each_entry(hp, &security_hook_heads.ipc_getsecid, list) { | |
2060 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2061 | continue; | |
2062 | hp->hook.ipc_getsecid(ipcp, &blob->secid[hp->lsmid->slot]); | |
2063 | } | |
8a076191 AD |
2064 | } |
2065 | ||
20510f2f JM |
2066 | int security_msg_msg_alloc(struct msg_msg *msg) |
2067 | { | |
ecd5f82e CS |
2068 | int rc = lsm_msg_msg_alloc(msg); |
2069 | ||
2070 | if (unlikely(rc)) | |
2071 | return rc; | |
2072 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
2073 | if (unlikely(rc)) | |
2074 | security_msg_msg_free(msg); | |
2075 | return rc; | |
20510f2f JM |
2076 | } |
2077 | ||
2078 | void security_msg_msg_free(struct msg_msg *msg) | |
2079 | { | |
f25fce3e | 2080 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
2081 | kfree(msg->security); |
2082 | msg->security = NULL; | |
20510f2f JM |
2083 | } |
2084 | ||
d8c6e854 | 2085 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 2086 | { |
ecd5f82e CS |
2087 | int rc = lsm_ipc_alloc(msq); |
2088 | ||
2089 | if (unlikely(rc)) | |
2090 | return rc; | |
2091 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
2092 | if (unlikely(rc)) | |
2093 | security_msg_queue_free(msq); | |
2094 | return rc; | |
20510f2f JM |
2095 | } |
2096 | ||
d8c6e854 | 2097 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 2098 | { |
f25fce3e | 2099 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
2100 | kfree(msq->security); |
2101 | msq->security = NULL; | |
20510f2f JM |
2102 | } |
2103 | ||
d8c6e854 | 2104 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 2105 | { |
f25fce3e | 2106 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
2107 | } |
2108 | ||
d8c6e854 | 2109 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 2110 | { |
f25fce3e | 2111 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
2112 | } |
2113 | ||
d8c6e854 | 2114 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
2115 | struct msg_msg *msg, int msqflg) |
2116 | { | |
f25fce3e | 2117 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
2118 | } |
2119 | ||
d8c6e854 | 2120 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
2121 | struct task_struct *target, long type, int mode) |
2122 | { | |
f25fce3e | 2123 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
2124 | } |
2125 | ||
7191adff | 2126 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 2127 | { |
ecd5f82e CS |
2128 | int rc = lsm_ipc_alloc(shp); |
2129 | ||
2130 | if (unlikely(rc)) | |
2131 | return rc; | |
2132 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
2133 | if (unlikely(rc)) | |
2134 | security_shm_free(shp); | |
2135 | return rc; | |
20510f2f JM |
2136 | } |
2137 | ||
7191adff | 2138 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 2139 | { |
f25fce3e | 2140 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
2141 | kfree(shp->security); |
2142 | shp->security = NULL; | |
20510f2f JM |
2143 | } |
2144 | ||
7191adff | 2145 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 2146 | { |
f25fce3e | 2147 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
2148 | } |
2149 | ||
7191adff | 2150 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 2151 | { |
f25fce3e | 2152 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
2153 | } |
2154 | ||
7191adff | 2155 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 2156 | { |
f25fce3e | 2157 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
2158 | } |
2159 | ||
aefad959 | 2160 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 2161 | { |
ecd5f82e CS |
2162 | int rc = lsm_ipc_alloc(sma); |
2163 | ||
2164 | if (unlikely(rc)) | |
2165 | return rc; | |
2166 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
2167 | if (unlikely(rc)) | |
2168 | security_sem_free(sma); | |
2169 | return rc; | |
20510f2f JM |
2170 | } |
2171 | ||
aefad959 | 2172 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 2173 | { |
f25fce3e | 2174 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
2175 | kfree(sma->security); |
2176 | sma->security = NULL; | |
20510f2f JM |
2177 | } |
2178 | ||
aefad959 | 2179 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 2180 | { |
f25fce3e | 2181 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
2182 | } |
2183 | ||
aefad959 | 2184 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 2185 | { |
f25fce3e | 2186 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
2187 | } |
2188 | ||
aefad959 | 2189 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
2190 | unsigned nsops, int alter) |
2191 | { | |
f25fce3e | 2192 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
2193 | } |
2194 | ||
2195 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
2196 | { | |
2197 | if (unlikely(inode && IS_PRIVATE(inode))) | |
2198 | return; | |
f25fce3e | 2199 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
2200 | } |
2201 | EXPORT_SYMBOL(security_d_instantiate); | |
2202 | ||
6d9c939d CS |
2203 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
2204 | char **value) | |
20510f2f | 2205 | { |
6d9c939d | 2206 | struct security_hook_list *hp; |
2925d862 CS |
2207 | char *final = NULL; |
2208 | char *cp; | |
2209 | int rc = 0; | |
2210 | int finallen = 0; | |
3ddd2931 CS |
2211 | int display = lsm_task_display(current); |
2212 | int slot = 0; | |
2213 | ||
2214 | if (!strcmp(name, "display")) { | |
2215 | /* | |
2216 | * lsm_slot will be 0 if there are no displaying modules. | |
2217 | */ | |
2218 | if (lsm_slot == 0) | |
2219 | return -EINVAL; | |
2220 | ||
2221 | /* | |
2222 | * Only allow getting the current process' display. | |
2223 | * There are too few reasons to get another process' | |
2224 | * display and too many LSM policy issues. | |
2225 | */ | |
2226 | if (current != p) | |
2227 | return -EINVAL; | |
2228 | ||
2229 | display = lsm_task_display(p); | |
2230 | if (display != LSMBLOB_INVALID) | |
2231 | slot = display; | |
2232 | *value = kstrdup(lsm_slotlist[slot]->lsm, GFP_KERNEL); | |
2233 | if (*value) | |
2234 | return strlen(*value); | |
2235 | return -ENOMEM; | |
2236 | } | |
6d9c939d | 2237 | |
2925d862 CS |
2238 | if (!strcmp(name, "context")) { |
2239 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, | |
2240 | list) { | |
2241 | rc = hp->hook.getprocattr(p, "context", &cp); | |
2242 | if (rc == -EINVAL) | |
2243 | continue; | |
2244 | if (rc < 0) { | |
2245 | kfree(final); | |
2246 | return rc; | |
2247 | } | |
2248 | rc = append_ctx(&final, &finallen, hp->lsmid->lsm, | |
2249 | cp, rc); | |
2250 | kfree(cp); | |
2251 | if (rc < 0) { | |
2252 | kfree(final); | |
2253 | return rc; | |
2254 | } | |
2255 | } | |
2256 | if (final == NULL) | |
2257 | return -EINVAL; | |
2258 | *value = final; | |
2259 | return finallen; | |
2260 | } | |
2261 | ||
6d9c939d | 2262 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { |
f4d92e4c | 2263 | if (lsm != NULL && strcmp(lsm, hp->lsmid->lsm)) |
6d9c939d | 2264 | continue; |
3ddd2931 CS |
2265 | if (lsm == NULL && display != LSMBLOB_INVALID && |
2266 | display != hp->lsmid->slot) | |
2267 | continue; | |
6d9c939d CS |
2268 | return hp->hook.getprocattr(p, name, value); |
2269 | } | |
98e828a0 | 2270 | return LSM_RET_DEFAULT(getprocattr); |
20510f2f JM |
2271 | } |
2272 | ||
3ddd2931 CS |
2273 | /** |
2274 | * security_setprocattr - Set process attributes via /proc | |
2275 | * @lsm: name of module involved, or NULL | |
2276 | * @name: name of the attribute | |
2277 | * @value: value to set the attribute to | |
2278 | * @size: size of the value | |
2279 | * | |
2280 | * Set the process attribute for the specified security module | |
2281 | * to the specified value. Note that this can only be used to set | |
2282 | * the process attributes for the current, or "self" process. | |
2283 | * The /proc code has already done this check. | |
2284 | * | |
2285 | * Returns 0 on success, an appropriate code otherwise. | |
2286 | */ | |
6d9c939d CS |
2287 | int security_setprocattr(const char *lsm, const char *name, void *value, |
2288 | size_t size) | |
20510f2f | 2289 | { |
6d9c939d | 2290 | struct security_hook_list *hp; |
3ddd2931 CS |
2291 | char *termed; |
2292 | char *copy; | |
2293 | int *display = current->security; | |
2294 | int rc = -EINVAL; | |
2295 | int slot = 0; | |
2296 | ||
2297 | if (!strcmp(name, "display")) { | |
2298 | /* | |
2299 | * Change the "display" value only if all the security | |
2300 | * modules that support setting a procattr allow it. | |
2301 | * It is assumed that all such security modules will be | |
2302 | * cooperative. | |
2303 | */ | |
2304 | if (size == 0) | |
2305 | return -EINVAL; | |
2306 | ||
2307 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, | |
2308 | list) { | |
2309 | rc = hp->hook.setprocattr(name, value, size); | |
f5c2b5f7 | 2310 | if (rc < 0 && rc != -EINVAL) |
3ddd2931 CS |
2311 | return rc; |
2312 | } | |
2313 | ||
2314 | rc = -EINVAL; | |
2315 | ||
2316 | copy = kmemdup_nul(value, size, GFP_KERNEL); | |
2317 | if (copy == NULL) | |
2318 | return -ENOMEM; | |
2319 | ||
2320 | termed = strsep(©, " \n"); | |
2321 | ||
2322 | for (slot = 0; slot < lsm_slot; slot++) | |
2323 | if (!strcmp(termed, lsm_slotlist[slot]->lsm)) { | |
2324 | *display = lsm_slotlist[slot]->slot; | |
2325 | rc = size; | |
2326 | break; | |
2327 | } | |
2328 | ||
2329 | kfree(termed); | |
2330 | return rc; | |
2331 | } | |
6d9c939d CS |
2332 | |
2333 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
f4d92e4c | 2334 | if (lsm != NULL && strcmp(lsm, hp->lsmid->lsm)) |
6d9c939d | 2335 | continue; |
3ddd2931 CS |
2336 | if (lsm == NULL && *display != LSMBLOB_INVALID && |
2337 | *display != hp->lsmid->slot) | |
2338 | continue; | |
6d9c939d CS |
2339 | return hp->hook.setprocattr(name, value, size); |
2340 | } | |
98e828a0 | 2341 | return LSM_RET_DEFAULT(setprocattr); |
20510f2f JM |
2342 | } |
2343 | ||
2344 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2345 | { | |
f25fce3e | 2346 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2347 | } |
20510f2f | 2348 | |
746df9b5 DQ |
2349 | int security_ismaclabel(const char *name) |
2350 | { | |
f25fce3e | 2351 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2352 | } |
2353 | EXPORT_SYMBOL(security_ismaclabel); | |
2354 | ||
f5c2b5f7 CS |
2355 | int security_secid_to_secctx(struct lsmblob *blob, struct lsmcontext *cp, |
2356 | int display) | |
20510f2f | 2357 | { |
0550cfe8 | 2358 | struct security_hook_list *hp; |
0550cfe8 | 2359 | |
ba9f64e1 CS |
2360 | memset(cp, 0, sizeof(*cp)); |
2361 | ||
f5c2b5f7 CS |
2362 | /* |
2363 | * display either is the slot number use for formatting | |
2364 | * or an instruction on which relative slot to use. | |
2365 | */ | |
2366 | if (display == LSMBLOB_DISPLAY) | |
2367 | display = lsm_task_display(current); | |
2368 | else if (display == LSMBLOB_FIRST) | |
2369 | display = LSMBLOB_INVALID; | |
2370 | else if (display < 0) { | |
2371 | WARN_ONCE(true, | |
2372 | "LSM: %s unknown display\n", __func__); | |
2373 | display = LSMBLOB_INVALID; | |
2374 | } else if (display >= lsm_slot) { | |
2375 | WARN_ONCE(true, | |
2376 | "LSM: %s invalid display\n", __func__); | |
2377 | display = LSMBLOB_INVALID; | |
2378 | } | |
2379 | ||
2380 | ||
0550cfe8 | 2381 | hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) { |
ad80741e CS |
2382 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) |
2383 | continue; | |
ba9f64e1 CS |
2384 | if (display == LSMBLOB_INVALID || display == hp->lsmid->slot) { |
2385 | cp->slot = hp->lsmid->slot; | |
3ddd2931 CS |
2386 | return hp->hook.secid_to_secctx( |
2387 | blob->secid[hp->lsmid->slot], | |
ba9f64e1 CS |
2388 | &cp->context, &cp->len); |
2389 | } | |
0550cfe8 KS |
2390 | } |
2391 | ||
2392 | return LSM_RET_DEFAULT(secid_to_secctx); | |
20510f2f JM |
2393 | } |
2394 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2395 | ||
e5881044 CS |
2396 | int security_secctx_to_secid(const char *secdata, u32 seclen, |
2397 | struct lsmblob *blob) | |
63cb3449 | 2398 | { |
e5881044 | 2399 | struct security_hook_list *hp; |
3ddd2931 | 2400 | int display = lsm_task_display(current); |
e5881044 CS |
2401 | |
2402 | lsmblob_init(blob, 0); | |
2403 | hlist_for_each_entry(hp, &security_hook_heads.secctx_to_secid, list) { | |
2404 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2405 | continue; | |
3ddd2931 CS |
2406 | if (display == LSMBLOB_INVALID || display == hp->lsmid->slot) |
2407 | return hp->hook.secctx_to_secid(secdata, seclen, | |
2408 | &blob->secid[hp->lsmid->slot]); | |
e5881044 | 2409 | } |
f5c2b5f7 | 2410 | return -EOPNOTSUPP; |
63cb3449 DH |
2411 | } |
2412 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2413 | ||
a6ea17fe | 2414 | void security_release_secctx(struct lsmcontext *cp) |
20510f2f | 2415 | { |
3ddd2931 | 2416 | struct security_hook_list *hp; |
3ddd2931 CS |
2417 | |
2418 | hlist_for_each_entry(hp, &security_hook_heads.release_secctx, list) | |
a6ea17fe CS |
2419 | if (cp->slot == hp->lsmid->slot) { |
2420 | hp->hook.release_secctx(cp->context, cp->len); | |
2421 | break; | |
3ddd2931 | 2422 | } |
a6ea17fe CS |
2423 | |
2424 | memset(cp, 0, sizeof(*cp)); | |
20510f2f JM |
2425 | } |
2426 | EXPORT_SYMBOL(security_release_secctx); | |
2427 | ||
6f3be9f5 AG |
2428 | void security_inode_invalidate_secctx(struct inode *inode) |
2429 | { | |
2430 | call_void_hook(inode_invalidate_secctx, inode); | |
2431 | } | |
2432 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2433 | ||
1ee65e37 DQ |
2434 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2435 | { | |
f25fce3e | 2436 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2437 | } |
2438 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2439 | ||
2440 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2441 | { | |
f25fce3e | 2442 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2443 | } |
2444 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2445 | ||
8aec0122 | 2446 | int security_inode_getsecctx(struct inode *inode, struct lsmcontext *cp) |
1ee65e37 | 2447 | { |
8aec0122 CS |
2448 | struct security_hook_list *hp; |
2449 | ||
2450 | memset(cp, 0, sizeof(*cp)); | |
2451 | ||
2452 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecctx, list) { | |
2453 | cp->slot = hp->lsmid->slot; | |
2454 | return hp->hook.inode_getsecctx(inode, (void **)&cp->context, | |
2455 | &cp->len); | |
2456 | } | |
2457 | return -EOPNOTSUPP; | |
1ee65e37 DQ |
2458 | } |
2459 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2460 | ||
344fa64e DH |
2461 | #ifdef CONFIG_WATCH_QUEUE |
2462 | int security_post_notification(const struct cred *w_cred, | |
2463 | const struct cred *cred, | |
2464 | struct watch_notification *n) | |
2465 | { | |
2466 | return call_int_hook(post_notification, 0, w_cred, cred, n); | |
2467 | } | |
2468 | #endif /* CONFIG_WATCH_QUEUE */ | |
2469 | ||
998f5040 DH |
2470 | #ifdef CONFIG_KEY_NOTIFICATIONS |
2471 | int security_watch_key(struct key *key) | |
2472 | { | |
2473 | return call_int_hook(watch_key, 0, key); | |
2474 | } | |
2475 | #endif | |
2476 | ||
20510f2f JM |
2477 | #ifdef CONFIG_SECURITY_NETWORK |
2478 | ||
3610cda5 | 2479 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2480 | { |
f25fce3e | 2481 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2482 | } |
2483 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2484 | ||
2485 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2486 | { | |
f25fce3e | 2487 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2488 | } |
2489 | EXPORT_SYMBOL(security_unix_may_send); | |
2490 | ||
2491 | int security_socket_create(int family, int type, int protocol, int kern) | |
2492 | { | |
f25fce3e | 2493 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2494 | } |
2495 | ||
2496 | int security_socket_post_create(struct socket *sock, int family, | |
2497 | int type, int protocol, int kern) | |
2498 | { | |
f25fce3e | 2499 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2500 | protocol, kern); |
2501 | } | |
2502 | ||
aae7cfcb DH |
2503 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
2504 | { | |
2505 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
2506 | } | |
2507 | EXPORT_SYMBOL(security_socket_socketpair); | |
2508 | ||
20510f2f JM |
2509 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
2510 | { | |
f25fce3e | 2511 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2512 | } |
2513 | ||
2514 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2515 | { | |
f25fce3e | 2516 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2517 | } |
2518 | ||
2519 | int security_socket_listen(struct socket *sock, int backlog) | |
2520 | { | |
f25fce3e | 2521 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2522 | } |
2523 | ||
2524 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2525 | { | |
f25fce3e | 2526 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2527 | } |
2528 | ||
20510f2f JM |
2529 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2530 | { | |
f25fce3e | 2531 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2532 | } |
2533 | ||
2534 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2535 | int size, int flags) | |
2536 | { | |
f25fce3e | 2537 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2538 | } |
2539 | ||
2540 | int security_socket_getsockname(struct socket *sock) | |
2541 | { | |
f25fce3e | 2542 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2543 | } |
2544 | ||
2545 | int security_socket_getpeername(struct socket *sock) | |
2546 | { | |
f25fce3e | 2547 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2548 | } |
2549 | ||
2550 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2551 | { | |
f25fce3e | 2552 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2553 | } |
2554 | ||
2555 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2556 | { | |
f25fce3e | 2557 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2558 | } |
2559 | ||
2560 | int security_socket_shutdown(struct socket *sock, int how) | |
2561 | { | |
f25fce3e | 2562 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2563 | } |
2564 | ||
2565 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2566 | { | |
f25fce3e | 2567 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2568 | } |
2569 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2570 | ||
2571 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2572 | int __user *optlen, unsigned len) | |
2573 | { | |
3ddd2931 CS |
2574 | int display = lsm_task_display(current); |
2575 | struct security_hook_list *hp; | |
2576 | ||
2577 | hlist_for_each_entry(hp, &security_hook_heads.socket_getpeersec_stream, | |
2578 | list) | |
2579 | if (display == LSMBLOB_INVALID || display == hp->lsmid->slot) | |
2580 | return hp->hook.socket_getpeersec_stream(sock, optval, | |
2581 | optlen, len); | |
2582 | return -ENOPROTOOPT; | |
20510f2f JM |
2583 | } |
2584 | ||
8cad4719 CS |
2585 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, |
2586 | struct lsmblob *blob) | |
20510f2f | 2587 | { |
8cad4719 CS |
2588 | struct security_hook_list *hp; |
2589 | int rc = -ENOPROTOOPT; | |
2590 | ||
2591 | hlist_for_each_entry(hp, &security_hook_heads.socket_getpeersec_dgram, | |
2592 | list) { | |
2593 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2594 | continue; | |
2595 | rc = hp->hook.socket_getpeersec_dgram(sock, skb, | |
2596 | &blob->secid[hp->lsmid->slot]); | |
2597 | if (rc != 0) | |
2598 | break; | |
2599 | } | |
2600 | return rc; | |
20510f2f JM |
2601 | } |
2602 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2603 | ||
2604 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2605 | { | |
716eca8c CS |
2606 | int rc = lsm_sock_alloc(sk, priority); |
2607 | ||
2608 | if (unlikely(rc)) | |
2609 | return rc; | |
2610 | rc = call_int_hook(sk_alloc_security, 0, sk, family, priority); | |
2611 | if (unlikely(rc)) | |
2612 | security_sk_free(sk); | |
2613 | return rc; | |
20510f2f JM |
2614 | } |
2615 | ||
2616 | void security_sk_free(struct sock *sk) | |
2617 | { | |
f25fce3e | 2618 | call_void_hook(sk_free_security, sk); |
716eca8c CS |
2619 | kfree(sk->sk_security); |
2620 | sk->sk_security = NULL; | |
20510f2f JM |
2621 | } |
2622 | ||
2623 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2624 | { | |
f25fce3e | 2625 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2626 | } |
6230c9b4 | 2627 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f | 2628 | |
3df98d79 | 2629 | void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic) |
20510f2f | 2630 | { |
3df98d79 | 2631 | call_void_hook(sk_getsecid, sk, &flic->flowic_secid); |
20510f2f JM |
2632 | } |
2633 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2634 | ||
3df98d79 PM |
2635 | void security_req_classify_flow(const struct request_sock *req, |
2636 | struct flowi_common *flic) | |
20510f2f | 2637 | { |
3df98d79 | 2638 | call_void_hook(req_classify_flow, req, flic); |
20510f2f JM |
2639 | } |
2640 | EXPORT_SYMBOL(security_req_classify_flow); | |
2641 | ||
2642 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2643 | { | |
f25fce3e | 2644 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2645 | } |
2646 | EXPORT_SYMBOL(security_sock_graft); | |
2647 | ||
41dd9596 | 2648 | int security_inet_conn_request(const struct sock *sk, |
20510f2f JM |
2649 | struct sk_buff *skb, struct request_sock *req) |
2650 | { | |
f25fce3e | 2651 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2652 | } |
2653 | EXPORT_SYMBOL(security_inet_conn_request); | |
2654 | ||
2655 | void security_inet_csk_clone(struct sock *newsk, | |
2656 | const struct request_sock *req) | |
2657 | { | |
f25fce3e | 2658 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2659 | } |
2660 | ||
2661 | void security_inet_conn_established(struct sock *sk, | |
2662 | struct sk_buff *skb) | |
2663 | { | |
f25fce3e | 2664 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2665 | } |
72e89f50 | 2666 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2667 | |
e5881044 | 2668 | int security_secmark_relabel_packet(struct lsmblob *blob) |
2606fd1f | 2669 | { |
e5881044 CS |
2670 | struct security_hook_list *hp; |
2671 | int rc = 0; | |
2672 | ||
2673 | hlist_for_each_entry(hp, &security_hook_heads.secmark_relabel_packet, | |
2674 | list) { | |
2675 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2676 | continue; | |
2677 | rc = hp->hook.secmark_relabel_packet( | |
2678 | blob->secid[hp->lsmid->slot]); | |
2679 | if (rc != 0) | |
2680 | break; | |
2681 | } | |
2682 | return rc; | |
2606fd1f EP |
2683 | } |
2684 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2685 | ||
2686 | void security_secmark_refcount_inc(void) | |
2687 | { | |
f25fce3e | 2688 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2689 | } |
2690 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2691 | ||
2692 | void security_secmark_refcount_dec(void) | |
2693 | { | |
f25fce3e | 2694 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2695 | } |
2696 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2697 | ||
5dbbaf2d PM |
2698 | int security_tun_dev_alloc_security(void **security) |
2699 | { | |
f25fce3e | 2700 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2701 | } |
2702 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2703 | ||
2704 | void security_tun_dev_free_security(void *security) | |
2705 | { | |
f25fce3e | 2706 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2707 | } |
2708 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2709 | ||
2b980dbd PM |
2710 | int security_tun_dev_create(void) |
2711 | { | |
f25fce3e | 2712 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2713 | } |
2714 | EXPORT_SYMBOL(security_tun_dev_create); | |
2715 | ||
5dbbaf2d | 2716 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2717 | { |
f25fce3e | 2718 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2719 | } |
5dbbaf2d | 2720 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2721 | |
5dbbaf2d | 2722 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2723 | { |
f25fce3e | 2724 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2725 | } |
2726 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2727 | ||
5dbbaf2d PM |
2728 | int security_tun_dev_open(void *security) |
2729 | { | |
f25fce3e | 2730 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2731 | } |
2732 | EXPORT_SYMBOL(security_tun_dev_open); | |
2733 | ||
72e89f50 RH |
2734 | int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) |
2735 | { | |
2736 | return call_int_hook(sctp_assoc_request, 0, ep, skb); | |
2737 | } | |
2738 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2739 | ||
2740 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2741 | struct sockaddr *address, int addrlen) | |
2742 | { | |
2743 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2744 | address, addrlen); | |
2745 | } | |
2746 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2747 | ||
2748 | void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, | |
2749 | struct sock *newsk) | |
2750 | { | |
2751 | call_void_hook(sctp_sk_clone, ep, sk, newsk); | |
2752 | } | |
2753 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2754 | ||
20510f2f JM |
2755 | #endif /* CONFIG_SECURITY_NETWORK */ |
2756 | ||
d291f1a6 DJ |
2757 | #ifdef CONFIG_SECURITY_INFINIBAND |
2758 | ||
2759 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2760 | { | |
2761 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2762 | } | |
2763 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2764 | ||
47a2b338 DJ |
2765 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2766 | { | |
2767 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2768 | } | |
2769 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2770 | ||
d291f1a6 DJ |
2771 | int security_ib_alloc_security(void **sec) |
2772 | { | |
2773 | return call_int_hook(ib_alloc_security, 0, sec); | |
2774 | } | |
2775 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2776 | ||
2777 | void security_ib_free_security(void *sec) | |
2778 | { | |
2779 | call_void_hook(ib_free_security, sec); | |
2780 | } | |
2781 | EXPORT_SYMBOL(security_ib_free_security); | |
2782 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2783 | ||
20510f2f JM |
2784 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2785 | ||
52a4c640 NA |
2786 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2787 | struct xfrm_user_sec_ctx *sec_ctx, | |
2788 | gfp_t gfp) | |
20510f2f | 2789 | { |
f25fce3e | 2790 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2791 | } |
2792 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2793 | ||
03e1ad7b PM |
2794 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2795 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2796 | { |
f25fce3e | 2797 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2798 | } |
2799 | ||
03e1ad7b | 2800 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2801 | { |
f25fce3e | 2802 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2803 | } |
2804 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2805 | ||
03e1ad7b | 2806 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2807 | { |
f25fce3e | 2808 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2809 | } |
2810 | ||
2e5aa866 PM |
2811 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2812 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2813 | { |
f25fce3e | 2814 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2815 | } |
2816 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2817 | ||
2818 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2819 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2820 | { | |
f25fce3e | 2821 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2822 | } |
2823 | ||
2824 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2825 | { | |
f25fce3e | 2826 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2827 | } |
2828 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2829 | ||
2830 | void security_xfrm_state_free(struct xfrm_state *x) | |
2831 | { | |
f25fce3e | 2832 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2833 | } |
2834 | ||
03e1ad7b | 2835 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) |
20510f2f | 2836 | { |
f25fce3e | 2837 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); |
20510f2f JM |
2838 | } |
2839 | ||
2840 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 | 2841 | struct xfrm_policy *xp, |
3df98d79 | 2842 | const struct flowi_common *flic) |
20510f2f | 2843 | { |
b1d9e6b0 | 2844 | struct security_hook_list *hp; |
98e828a0 | 2845 | int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match); |
b1d9e6b0 CS |
2846 | |
2847 | /* | |
2848 | * Since this function is expected to return 0 or 1, the judgment | |
2849 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2850 | * we can use the first LSM's judgment because currently only SELinux | |
2851 | * supplies this call. | |
2852 | * | |
2853 | * For speed optimization, we explicitly break the loop rather than | |
2854 | * using the macro | |
2855 | */ | |
df0ce173 | 2856 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 | 2857 | list) { |
3df98d79 | 2858 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic); |
b1d9e6b0 CS |
2859 | break; |
2860 | } | |
2861 | return rc; | |
20510f2f JM |
2862 | } |
2863 | ||
2864 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2865 | { | |
f25fce3e | 2866 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2867 | } |
2868 | ||
3df98d79 | 2869 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic) |
20510f2f | 2870 | { |
3df98d79 | 2871 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid, |
f25fce3e | 2872 | 0); |
20510f2f JM |
2873 | |
2874 | BUG_ON(rc); | |
2875 | } | |
2876 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2877 | ||
2878 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2879 | ||
2880 | #ifdef CONFIG_KEYS | |
2881 | ||
d84f4f99 DH |
2882 | int security_key_alloc(struct key *key, const struct cred *cred, |
2883 | unsigned long flags) | |
20510f2f | 2884 | { |
f25fce3e | 2885 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2886 | } |
2887 | ||
2888 | void security_key_free(struct key *key) | |
2889 | { | |
f25fce3e | 2890 | call_void_hook(key_free, key); |
20510f2f JM |
2891 | } |
2892 | ||
8c0637e9 DH |
2893 | int security_key_permission(key_ref_t key_ref, const struct cred *cred, |
2894 | enum key_need_perm need_perm) | |
20510f2f | 2895 | { |
8c0637e9 | 2896 | return call_int_hook(key_permission, 0, key_ref, cred, need_perm); |
20510f2f JM |
2897 | } |
2898 | ||
70a5bb72 DH |
2899 | int security_key_getsecurity(struct key *key, char **_buffer) |
2900 | { | |
b1d9e6b0 | 2901 | *_buffer = NULL; |
f25fce3e | 2902 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2903 | } |
2904 | ||
20510f2f | 2905 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2906 | |
2907 | #ifdef CONFIG_AUDIT | |
2908 | ||
2909 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2910 | { | |
f4d92e4c | 2911 | struct security_hook_list *hp; |
f5c2b5f7 | 2912 | int display = lsm_task_display(current); |
f4d92e4c CS |
2913 | |
2914 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_init, list) { | |
2915 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2916 | continue; | |
f5c2b5f7 CS |
2917 | if (display != LSMBLOB_INVALID && display != hp->lsmid->slot) |
2918 | continue; | |
2919 | return hp->hook.audit_rule_init(field, op, rulestr, | |
2920 | &lsmrule[hp->lsmid->slot]); | |
f4d92e4c | 2921 | } |
f5c2b5f7 | 2922 | return 0; |
03d37d25 AD |
2923 | } |
2924 | ||
2925 | int security_audit_rule_known(struct audit_krule *krule) | |
2926 | { | |
f25fce3e | 2927 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2928 | } |
2929 | ||
f4d92e4c | 2930 | void security_audit_rule_free(void **lsmrule) |
03d37d25 | 2931 | { |
f4d92e4c CS |
2932 | struct security_hook_list *hp; |
2933 | ||
2934 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_free, list) { | |
2935 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2936 | continue; | |
dc9ac6d8 CS |
2937 | if (lsmrule[hp->lsmid->slot] == NULL) |
2938 | continue; | |
f4d92e4c CS |
2939 | hp->hook.audit_rule_free(lsmrule[hp->lsmid->slot]); |
2940 | } | |
03d37d25 AD |
2941 | } |
2942 | ||
dc9ac6d8 CS |
2943 | int security_audit_rule_match(struct lsmblob *blob, u32 field, u32 op, |
2944 | void **lsmrule) | |
03d37d25 | 2945 | { |
f4d92e4c CS |
2946 | struct security_hook_list *hp; |
2947 | int rc; | |
2948 | ||
2949 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_match, list) { | |
2950 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2951 | continue; | |
dc9ac6d8 CS |
2952 | if (lsmrule[hp->lsmid->slot] == NULL) |
2953 | continue; | |
f5c2b5f7 CS |
2954 | if (lsmrule[hp->lsmid->slot] == NULL) |
2955 | continue; | |
dc9ac6d8 CS |
2956 | rc = hp->hook.audit_rule_match(blob->secid[hp->lsmid->slot], |
2957 | field, op, | |
f4d92e4c CS |
2958 | &lsmrule[hp->lsmid->slot]); |
2959 | if (rc) | |
2960 | return rc; | |
2961 | } | |
2962 | return 0; | |
03d37d25 | 2963 | } |
b1d9e6b0 | 2964 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2965 | |
2966 | #ifdef CONFIG_BPF_SYSCALL | |
2967 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2968 | { | |
2969 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2970 | } | |
2971 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2972 | { | |
2973 | return call_int_hook(bpf_map, 0, map, fmode); | |
2974 | } | |
2975 | int security_bpf_prog(struct bpf_prog *prog) | |
2976 | { | |
2977 | return call_int_hook(bpf_prog, 0, prog); | |
2978 | } | |
2979 | int security_bpf_map_alloc(struct bpf_map *map) | |
2980 | { | |
2981 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2982 | } | |
2983 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2984 | { | |
2985 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2986 | } | |
2987 | void security_bpf_map_free(struct bpf_map *map) | |
2988 | { | |
2989 | call_void_hook(bpf_map_free_security, map); | |
2990 | } | |
2991 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2992 | { | |
2993 | call_void_hook(bpf_prog_free_security, aux); | |
2994 | } | |
2995 | #endif /* CONFIG_BPF_SYSCALL */ | |
9e47d31d MG |
2996 | |
2997 | int security_locked_down(enum lockdown_reason what) | |
2998 | { | |
2999 | return call_int_hook(locked_down, 0, what); | |
3000 | } | |
3001 | EXPORT_SYMBOL(security_locked_down); | |
da97e184 | 3002 | |
424c4cef JC |
3003 | int security_lock_kernel_down(const char *where, enum lockdown_reason level) |
3004 | { | |
3005 | return call_int_hook(lock_kernel_down, 0, where, level); | |
3006 | } | |
3007 | EXPORT_SYMBOL(security_lock_kernel_down); | |
3008 | ||
da97e184 JFG |
3009 | #ifdef CONFIG_PERF_EVENTS |
3010 | int security_perf_event_open(struct perf_event_attr *attr, int type) | |
3011 | { | |
3012 | return call_int_hook(perf_event_open, 0, attr, type); | |
3013 | } | |
3014 | ||
3015 | int security_perf_event_alloc(struct perf_event *event) | |
3016 | { | |
3017 | return call_int_hook(perf_event_alloc, 0, event); | |
3018 | } | |
3019 | ||
3020 | void security_perf_event_free(struct perf_event *event) | |
3021 | { | |
3022 | call_void_hook(perf_event_free, event); | |
3023 | } | |
3024 | ||
3025 | int security_perf_event_read(struct perf_event *event) | |
3026 | { | |
3027 | return call_int_hook(perf_event_read, 0, event); | |
3028 | } | |
3029 | ||
3030 | int security_perf_event_write(struct perf_event *event) | |
3031 | { | |
3032 | return call_int_hook(perf_event_write, 0, event); | |
3033 | } | |
3034 | #endif /* CONFIG_PERF_EVENTS */ |