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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> |
1da177e4 | 32 | |
823eb1cc | 33 | #define MAX_LSM_EVM_XATTR 2 |
1da177e4 | 34 | |
2d4d5119 KC |
35 | /* How many LSMs were built into the kernel? */ |
36 | #define LSM_COUNT (__end_lsm_info - __start_lsm_info) | |
37 | ||
59438b46 SS |
38 | /* |
39 | * These are descriptions of the reasons that can be passed to the | |
40 | * security_locked_down() LSM hook. Placing this array here allows | |
41 | * all security modules to use the same descriptions for auditing | |
42 | * purposes. | |
43 | */ | |
44 | const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = { | |
45 | [LOCKDOWN_NONE] = "none", | |
46 | [LOCKDOWN_MODULE_SIGNATURE] = "unsigned module loading", | |
47 | [LOCKDOWN_DEV_MEM] = "/dev/mem,kmem,port", | |
48 | [LOCKDOWN_EFI_TEST] = "/dev/efi_test access", | |
49 | [LOCKDOWN_KEXEC] = "kexec of unsigned images", | |
50 | [LOCKDOWN_HIBERNATION] = "hibernation", | |
51 | [LOCKDOWN_PCI_ACCESS] = "direct PCI access", | |
52 | [LOCKDOWN_IOPORT] = "raw io port access", | |
53 | [LOCKDOWN_MSR] = "raw MSR access", | |
54 | [LOCKDOWN_ACPI_TABLES] = "modifying ACPI tables", | |
55 | [LOCKDOWN_PCMCIA_CIS] = "direct PCMCIA CIS storage", | |
56 | [LOCKDOWN_TIOCSSERIAL] = "reconfiguration of serial port IO", | |
57 | [LOCKDOWN_MODULE_PARAMETERS] = "unsafe module parameters", | |
58 | [LOCKDOWN_MMIOTRACE] = "unsafe mmio", | |
59 | [LOCKDOWN_DEBUGFS] = "debugfs access", | |
60 | [LOCKDOWN_XMON_WR] = "xmon write access", | |
51e1bb9e | 61 | [LOCKDOWN_BPF_WRITE_USER] = "use of bpf to write user RAM", |
eadb2f47 | 62 | [LOCKDOWN_DBG_WRITE_KERNEL] = "use of kgdb/kdb to write kernel RAM", |
59438b46 SS |
63 | [LOCKDOWN_INTEGRITY_MAX] = "integrity", |
64 | [LOCKDOWN_KCORE] = "/proc/kcore access", | |
65 | [LOCKDOWN_KPROBES] = "use of kprobes", | |
71330842 | 66 | [LOCKDOWN_BPF_READ_KERNEL] = "use of bpf to read kernel RAM", |
eadb2f47 | 67 | [LOCKDOWN_DBG_READ_KERNEL] = "use of kgdb/kdb to read kernel RAM", |
59438b46 SS |
68 | [LOCKDOWN_PERF] = "unsafe use of perf", |
69 | [LOCKDOWN_TRACEFS] = "use of tracefs", | |
70 | [LOCKDOWN_XMON_RW] = "xmon read and write access", | |
c7a5899e | 71 | [LOCKDOWN_XFRM_SECRET] = "xfrm SA secret", |
59438b46 SS |
72 | [LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality", |
73 | }; | |
74 | ||
3dfc9b02 | 75 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
42df744c | 76 | static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain); |
8f408ab6 | 77 | |
33bf60ca | 78 | static struct kmem_cache *lsm_file_cache; |
afb1cbe3 | 79 | static struct kmem_cache *lsm_inode_cache; |
33bf60ca | 80 | |
d69dece5 | 81 | char *lsm_names; |
bbd3662a CS |
82 | static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init; |
83 | ||
076c54c5 | 84 | /* Boot-time LSM user choice */ |
79f7865d | 85 | static __initdata const char *chosen_lsm_order; |
5ef4e419 | 86 | static __initdata const char *chosen_major_lsm; |
1da177e4 | 87 | |
13e735c0 KC |
88 | static __initconst const char * const builtin_lsm_order = CONFIG_LSM; |
89 | ||
2d4d5119 KC |
90 | /* Ordered list of LSMs to initialize. */ |
91 | static __initdata struct lsm_info **ordered_lsms; | |
14bd99c8 | 92 | static __initdata struct lsm_info *exclusive; |
2d4d5119 | 93 | |
9b8c7c14 KC |
94 | static __initdata bool debug; |
95 | #define init_debug(...) \ | |
96 | do { \ | |
97 | if (debug) \ | |
98 | pr_info(__VA_ARGS__); \ | |
99 | } while (0) | |
100 | ||
f4941d75 KC |
101 | static bool __init is_enabled(struct lsm_info *lsm) |
102 | { | |
a8027fb0 KC |
103 | if (!lsm->enabled) |
104 | return false; | |
f4941d75 | 105 | |
a8027fb0 | 106 | return *lsm->enabled; |
f4941d75 KC |
107 | } |
108 | ||
109 | /* Mark an LSM's enabled flag. */ | |
110 | static int lsm_enabled_true __initdata = 1; | |
111 | static int lsm_enabled_false __initdata = 0; | |
112 | static void __init set_enabled(struct lsm_info *lsm, bool enabled) | |
113 | { | |
114 | /* | |
115 | * When an LSM hasn't configured an enable variable, we can use | |
116 | * a hard-coded location for storing the default enabled state. | |
117 | */ | |
118 | if (!lsm->enabled) { | |
119 | if (enabled) | |
120 | lsm->enabled = &lsm_enabled_true; | |
121 | else | |
122 | lsm->enabled = &lsm_enabled_false; | |
123 | } else if (lsm->enabled == &lsm_enabled_true) { | |
124 | if (!enabled) | |
125 | lsm->enabled = &lsm_enabled_false; | |
126 | } else if (lsm->enabled == &lsm_enabled_false) { | |
127 | if (enabled) | |
128 | lsm->enabled = &lsm_enabled_true; | |
129 | } else { | |
130 | *lsm->enabled = enabled; | |
131 | } | |
132 | } | |
133 | ||
2d4d5119 KC |
134 | /* Is an LSM already listed in the ordered LSMs list? */ |
135 | static bool __init exists_ordered_lsm(struct lsm_info *lsm) | |
136 | { | |
137 | struct lsm_info **check; | |
138 | ||
139 | for (check = ordered_lsms; *check; check++) | |
140 | if (*check == lsm) | |
141 | return true; | |
142 | ||
143 | return false; | |
144 | } | |
145 | ||
146 | /* Append an LSM to the list of ordered LSMs to initialize. */ | |
147 | static int last_lsm __initdata; | |
148 | static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from) | |
149 | { | |
150 | /* Ignore duplicate selections. */ | |
151 | if (exists_ordered_lsm(lsm)) | |
152 | return; | |
153 | ||
154 | if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from)) | |
155 | return; | |
156 | ||
a8027fb0 KC |
157 | /* Enable this LSM, if it is not already set. */ |
158 | if (!lsm->enabled) | |
159 | lsm->enabled = &lsm_enabled_true; | |
2d4d5119 | 160 | ordered_lsms[last_lsm++] = lsm; |
a8027fb0 | 161 | |
2d4d5119 KC |
162 | init_debug("%s ordering: %s (%sabled)\n", from, lsm->name, |
163 | is_enabled(lsm) ? "en" : "dis"); | |
164 | } | |
165 | ||
f4941d75 KC |
166 | /* Is an LSM allowed to be initialized? */ |
167 | static bool __init lsm_allowed(struct lsm_info *lsm) | |
168 | { | |
169 | /* Skip if the LSM is disabled. */ | |
170 | if (!is_enabled(lsm)) | |
171 | return false; | |
172 | ||
14bd99c8 KC |
173 | /* Not allowed if another exclusive LSM already initialized. */ |
174 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) { | |
175 | init_debug("exclusive disabled: %s\n", lsm->name); | |
176 | return false; | |
177 | } | |
178 | ||
f4941d75 KC |
179 | return true; |
180 | } | |
181 | ||
bbd3662a CS |
182 | static void __init lsm_set_blob_size(int *need, int *lbs) |
183 | { | |
184 | int offset; | |
185 | ||
186 | if (*need > 0) { | |
187 | offset = *lbs; | |
188 | *lbs += *need; | |
189 | *need = offset; | |
190 | } | |
191 | } | |
192 | ||
193 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
194 | { | |
195 | if (!needed) | |
196 | return; | |
197 | ||
198 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 199 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
200 | /* |
201 | * The inode blob gets an rcu_head in addition to | |
202 | * what the modules might need. | |
203 | */ | |
204 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
205 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
206 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
207 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
208 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
1aea7808 | 209 | lsm_set_blob_size(&needed->lbs_superblock, &blob_sizes.lbs_superblock); |
f4ad8f2c | 210 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
211 | } |
212 | ||
d8e9bbd4 KC |
213 | /* Prepare LSM for initialization. */ |
214 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
215 | { |
216 | int enabled = lsm_allowed(lsm); | |
217 | ||
218 | /* Record enablement (to handle any following exclusive LSMs). */ | |
219 | set_enabled(lsm, enabled); | |
220 | ||
d8e9bbd4 | 221 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 222 | if (enabled) { |
14bd99c8 KC |
223 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
224 | exclusive = lsm; | |
225 | init_debug("exclusive chosen: %s\n", lsm->name); | |
226 | } | |
bbd3662a CS |
227 | |
228 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
229 | } |
230 | } | |
231 | ||
232 | /* Initialize a given LSM, if it is enabled. */ | |
233 | static void __init initialize_lsm(struct lsm_info *lsm) | |
234 | { | |
235 | if (is_enabled(lsm)) { | |
236 | int ret; | |
14bd99c8 | 237 | |
f4941d75 KC |
238 | init_debug("initializing %s\n", lsm->name); |
239 | ret = lsm->init(); | |
240 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
241 | } | |
242 | } | |
243 | ||
13e735c0 | 244 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 245 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
246 | { |
247 | struct lsm_info *lsm; | |
13e735c0 KC |
248 | char *sep, *name, *next; |
249 | ||
e2bc445b KC |
250 | /* LSM_ORDER_FIRST is always first. */ |
251 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
252 | if (lsm->order == LSM_ORDER_FIRST) | |
253 | append_ordered_lsm(lsm, "first"); | |
254 | } | |
255 | ||
7e611486 | 256 | /* Process "security=", if given. */ |
7e611486 KC |
257 | if (chosen_major_lsm) { |
258 | struct lsm_info *major; | |
259 | ||
260 | /* | |
261 | * To match the original "security=" behavior, this | |
262 | * explicitly does NOT fallback to another Legacy Major | |
263 | * if the selected one was separately disabled: disable | |
264 | * all non-matching Legacy Major LSMs. | |
265 | */ | |
266 | for (major = __start_lsm_info; major < __end_lsm_info; | |
267 | major++) { | |
268 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
269 | strcmp(major->name, chosen_major_lsm) != 0) { | |
270 | set_enabled(major, false); | |
271 | init_debug("security=%s disabled: %s\n", | |
272 | chosen_major_lsm, major->name); | |
273 | } | |
274 | } | |
275 | } | |
5ef4e419 | 276 | |
13e735c0 KC |
277 | sep = kstrdup(order, GFP_KERNEL); |
278 | next = sep; | |
279 | /* Walk the list, looking for matching LSMs. */ | |
280 | while ((name = strsep(&next, ",")) != NULL) { | |
281 | bool found = false; | |
282 | ||
283 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
284 | if (lsm->order == LSM_ORDER_MUTABLE && |
285 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
286 | append_ordered_lsm(lsm, origin); |
287 | found = true; | |
288 | } | |
289 | } | |
290 | ||
291 | if (!found) | |
292 | init_debug("%s ignored: %s\n", origin, name); | |
657d910b | 293 | } |
c91d8106 CS |
294 | |
295 | /* Process "security=", if given. */ | |
296 | if (chosen_major_lsm) { | |
297 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
298 | if (exists_ordered_lsm(lsm)) | |
299 | continue; | |
300 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
301 | append_ordered_lsm(lsm, "security="); | |
302 | } | |
303 | } | |
304 | ||
305 | /* Disable all LSMs not in the ordered list. */ | |
306 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
307 | if (exists_ordered_lsm(lsm)) | |
308 | continue; | |
309 | set_enabled(lsm, false); | |
310 | init_debug("%s disabled: %s\n", origin, lsm->name); | |
311 | } | |
312 | ||
13e735c0 | 313 | kfree(sep); |
657d910b KC |
314 | } |
315 | ||
1cfb2a51 TH |
316 | static void __init lsm_early_cred(struct cred *cred); |
317 | static void __init lsm_early_task(struct task_struct *task); | |
318 | ||
e6b1db98 MG |
319 | static int lsm_append(const char *new, char **result); |
320 | ||
2d4d5119 KC |
321 | static void __init ordered_lsm_init(void) |
322 | { | |
323 | struct lsm_info **lsm; | |
324 | ||
325 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
326 | GFP_KERNEL); | |
327 | ||
89a9684e KC |
328 | if (chosen_lsm_order) { |
329 | if (chosen_major_lsm) { | |
330 | pr_info("security= is ignored because it is superseded by lsm=\n"); | |
331 | chosen_major_lsm = NULL; | |
332 | } | |
79f7865d | 333 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 334 | } else |
79f7865d | 335 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
336 | |
337 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
338 | prepare_lsm(*lsm); |
339 | ||
1aea7808 CS |
340 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
341 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); | |
342 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); | |
343 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); | |
344 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
345 | init_debug("superblock blob size = %d\n", blob_sizes.lbs_superblock); | |
346 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); | |
33bf60ca CS |
347 | |
348 | /* | |
349 | * Create any kmem_caches needed for blobs | |
350 | */ | |
351 | if (blob_sizes.lbs_file) | |
352 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
353 | blob_sizes.lbs_file, 0, | |
354 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
355 | if (blob_sizes.lbs_inode) |
356 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
357 | blob_sizes.lbs_inode, 0, | |
358 | SLAB_PANIC, NULL); | |
bbd3662a | 359 | |
1cfb2a51 TH |
360 | lsm_early_cred((struct cred *) current->cred); |
361 | lsm_early_task(current); | |
d8e9bbd4 KC |
362 | for (lsm = ordered_lsms; *lsm; lsm++) |
363 | initialize_lsm(*lsm); | |
2d4d5119 KC |
364 | |
365 | kfree(ordered_lsms); | |
366 | } | |
367 | ||
e6b1db98 MG |
368 | int __init early_security_init(void) |
369 | { | |
e6b1db98 MG |
370 | struct lsm_info *lsm; |
371 | ||
75c1182e BW |
372 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ |
373 | INIT_HLIST_HEAD(&security_hook_heads.NAME); | |
374 | #include "linux/lsm_hook_defs.h" | |
375 | #undef LSM_HOOK | |
e6b1db98 MG |
376 | |
377 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
378 | if (!lsm->enabled) | |
379 | lsm->enabled = &lsm_enabled_true; | |
380 | prepare_lsm(lsm); | |
381 | initialize_lsm(lsm); | |
382 | } | |
383 | ||
384 | return 0; | |
385 | } | |
386 | ||
1da177e4 LT |
387 | /** |
388 | * security_init - initializes the security framework | |
389 | * | |
390 | * This should be called early in the kernel initialization sequence. | |
391 | */ | |
392 | int __init security_init(void) | |
393 | { | |
e6b1db98 | 394 | struct lsm_info *lsm; |
3dfc9b02 | 395 | |
98d29170 KC |
396 | pr_info("Security Framework initializing\n"); |
397 | ||
e6b1db98 MG |
398 | /* |
399 | * Append the names of the early LSM modules now that kmalloc() is | |
400 | * available | |
401 | */ | |
402 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
403 | if (lsm->enabled) | |
404 | lsm_append(lsm->name, &lsm_names); | |
405 | } | |
1da177e4 | 406 | |
657d910b KC |
407 | /* Load LSMs in specified order. */ |
408 | ordered_lsm_init(); | |
409 | ||
1da177e4 LT |
410 | return 0; |
411 | } | |
412 | ||
076c54c5 | 413 | /* Save user chosen LSM */ |
5ef4e419 | 414 | static int __init choose_major_lsm(char *str) |
076c54c5 | 415 | { |
5ef4e419 | 416 | chosen_major_lsm = str; |
076c54c5 AD |
417 | return 1; |
418 | } | |
5ef4e419 | 419 | __setup("security=", choose_major_lsm); |
076c54c5 | 420 | |
79f7865d KC |
421 | /* Explicitly choose LSM initialization order. */ |
422 | static int __init choose_lsm_order(char *str) | |
423 | { | |
424 | chosen_lsm_order = str; | |
425 | return 1; | |
426 | } | |
427 | __setup("lsm=", choose_lsm_order); | |
428 | ||
9b8c7c14 KC |
429 | /* Enable LSM order debugging. */ |
430 | static int __init enable_debug(char *str) | |
431 | { | |
432 | debug = true; | |
433 | return 1; | |
434 | } | |
435 | __setup("lsm.debug", enable_debug); | |
436 | ||
3bb857e4 MS |
437 | static bool match_last_lsm(const char *list, const char *lsm) |
438 | { | |
439 | const char *last; | |
440 | ||
441 | if (WARN_ON(!list || !lsm)) | |
442 | return false; | |
443 | last = strrchr(list, ','); | |
444 | if (last) | |
445 | /* Pass the comma, strcmp() will check for '\0' */ | |
446 | last++; | |
447 | else | |
448 | last = list; | |
449 | return !strcmp(last, lsm); | |
450 | } | |
451 | ||
e6b1db98 | 452 | static int lsm_append(const char *new, char **result) |
d69dece5 CS |
453 | { |
454 | char *cp; | |
455 | ||
456 | if (*result == NULL) { | |
457 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
458 | if (*result == NULL) |
459 | return -ENOMEM; | |
d69dece5 | 460 | } else { |
3bb857e4 MS |
461 | /* Check if it is the last registered name */ |
462 | if (match_last_lsm(*result, new)) | |
463 | return 0; | |
d69dece5 CS |
464 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
465 | if (cp == NULL) | |
466 | return -ENOMEM; | |
467 | kfree(*result); | |
468 | *result = cp; | |
469 | } | |
470 | return 0; | |
471 | } | |
472 | ||
d69dece5 CS |
473 | /** |
474 | * security_add_hooks - Add a modules hooks to the hook lists. | |
475 | * @hooks: the hooks to add | |
476 | * @count: the number of hooks to add | |
477 | * @lsm: the name of the security module | |
478 | * | |
479 | * Each LSM has to register its hooks with the infrastructure. | |
480 | */ | |
481 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
1af0e4a0 | 482 | const char *lsm) |
d69dece5 CS |
483 | { |
484 | int i; | |
485 | ||
486 | for (i = 0; i < count; i++) { | |
487 | hooks[i].lsm = lsm; | |
df0ce173 | 488 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
d69dece5 | 489 | } |
e6b1db98 MG |
490 | |
491 | /* | |
492 | * Don't try to append during early_security_init(), we'll come back | |
493 | * and fix this up afterwards. | |
494 | */ | |
495 | if (slab_is_available()) { | |
496 | if (lsm_append(lsm, &lsm_names) < 0) | |
497 | panic("%s - Cannot get early memory.\n", __func__); | |
498 | } | |
d69dece5 CS |
499 | } |
500 | ||
42df744c | 501 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 502 | { |
42df744c JK |
503 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
504 | event, data); | |
8f408ab6 | 505 | } |
42df744c | 506 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 507 | |
42df744c | 508 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 509 | { |
42df744c JK |
510 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
511 | nb); | |
8f408ab6 | 512 | } |
42df744c | 513 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 514 | |
42df744c | 515 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 516 | { |
42df744c JK |
517 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
518 | nb); | |
8f408ab6 | 519 | } |
42df744c | 520 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 521 | |
bbd3662a CS |
522 | /** |
523 | * lsm_cred_alloc - allocate a composite cred blob | |
524 | * @cred: the cred that needs a blob | |
525 | * @gfp: allocation type | |
526 | * | |
527 | * Allocate the cred blob for all the modules | |
528 | * | |
529 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
530 | */ | |
531 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
532 | { | |
533 | if (blob_sizes.lbs_cred == 0) { | |
534 | cred->security = NULL; | |
535 | return 0; | |
536 | } | |
537 | ||
538 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
539 | if (cred->security == NULL) | |
540 | return -ENOMEM; | |
541 | return 0; | |
542 | } | |
543 | ||
544 | /** | |
545 | * lsm_early_cred - during initialization allocate a composite cred blob | |
546 | * @cred: the cred that needs a blob | |
547 | * | |
1cfb2a51 | 548 | * Allocate the cred blob for all the modules |
bbd3662a | 549 | */ |
1cfb2a51 | 550 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 551 | { |
1cfb2a51 | 552 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 553 | |
bbd3662a CS |
554 | if (rc) |
555 | panic("%s: Early cred alloc failed.\n", __func__); | |
556 | } | |
557 | ||
33bf60ca CS |
558 | /** |
559 | * lsm_file_alloc - allocate a composite file blob | |
560 | * @file: the file that needs a blob | |
561 | * | |
562 | * Allocate the file blob for all the modules | |
563 | * | |
564 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
565 | */ | |
566 | static int lsm_file_alloc(struct file *file) | |
567 | { | |
568 | if (!lsm_file_cache) { | |
569 | file->f_security = NULL; | |
570 | return 0; | |
571 | } | |
572 | ||
573 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
574 | if (file->f_security == NULL) | |
575 | return -ENOMEM; | |
576 | return 0; | |
577 | } | |
578 | ||
afb1cbe3 CS |
579 | /** |
580 | * lsm_inode_alloc - allocate a composite inode blob | |
581 | * @inode: the inode that needs a blob | |
582 | * | |
583 | * Allocate the inode blob for all the modules | |
584 | * | |
585 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
586 | */ | |
587 | int lsm_inode_alloc(struct inode *inode) | |
588 | { | |
589 | if (!lsm_inode_cache) { | |
590 | inode->i_security = NULL; | |
591 | return 0; | |
592 | } | |
593 | ||
594 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
595 | if (inode->i_security == NULL) | |
596 | return -ENOMEM; | |
597 | return 0; | |
598 | } | |
599 | ||
f4ad8f2c CS |
600 | /** |
601 | * lsm_task_alloc - allocate a composite task blob | |
602 | * @task: the task that needs a blob | |
603 | * | |
604 | * Allocate the task blob for all the modules | |
605 | * | |
606 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
607 | */ | |
3e8c7367 | 608 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c CS |
609 | { |
610 | if (blob_sizes.lbs_task == 0) { | |
611 | task->security = NULL; | |
612 | return 0; | |
613 | } | |
614 | ||
615 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
616 | if (task->security == NULL) | |
617 | return -ENOMEM; | |
618 | return 0; | |
619 | } | |
620 | ||
ecd5f82e CS |
621 | /** |
622 | * lsm_ipc_alloc - allocate a composite ipc blob | |
623 | * @kip: the ipc that needs a blob | |
624 | * | |
625 | * Allocate the ipc blob for all the modules | |
626 | * | |
627 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
628 | */ | |
3e8c7367 | 629 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
630 | { |
631 | if (blob_sizes.lbs_ipc == 0) { | |
632 | kip->security = NULL; | |
633 | return 0; | |
634 | } | |
635 | ||
636 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
637 | if (kip->security == NULL) | |
638 | return -ENOMEM; | |
639 | return 0; | |
640 | } | |
641 | ||
642 | /** | |
643 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
644 | * @mp: the msg_msg that needs a blob | |
645 | * | |
646 | * Allocate the ipc blob for all the modules | |
647 | * | |
648 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
649 | */ | |
3e8c7367 | 650 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
651 | { |
652 | if (blob_sizes.lbs_msg_msg == 0) { | |
653 | mp->security = NULL; | |
654 | return 0; | |
655 | } | |
656 | ||
657 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
658 | if (mp->security == NULL) | |
659 | return -ENOMEM; | |
660 | return 0; | |
661 | } | |
662 | ||
f4ad8f2c CS |
663 | /** |
664 | * lsm_early_task - during initialization allocate a composite task blob | |
665 | * @task: the task that needs a blob | |
666 | * | |
1cfb2a51 | 667 | * Allocate the task blob for all the modules |
f4ad8f2c | 668 | */ |
1cfb2a51 | 669 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 670 | { |
1cfb2a51 | 671 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 672 | |
f4ad8f2c CS |
673 | if (rc) |
674 | panic("%s: Early task alloc failed.\n", __func__); | |
675 | } | |
676 | ||
1aea7808 CS |
677 | /** |
678 | * lsm_superblock_alloc - allocate a composite superblock blob | |
679 | * @sb: the superblock that needs a blob | |
680 | * | |
681 | * Allocate the superblock blob for all the modules | |
682 | * | |
683 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
684 | */ | |
685 | static int lsm_superblock_alloc(struct super_block *sb) | |
686 | { | |
687 | if (blob_sizes.lbs_superblock == 0) { | |
688 | sb->s_security = NULL; | |
689 | return 0; | |
690 | } | |
691 | ||
692 | sb->s_security = kzalloc(blob_sizes.lbs_superblock, GFP_KERNEL); | |
693 | if (sb->s_security == NULL) | |
694 | return -ENOMEM; | |
695 | return 0; | |
696 | } | |
697 | ||
98e828a0 KS |
698 | /* |
699 | * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and | |
700 | * can be accessed with: | |
701 | * | |
702 | * LSM_RET_DEFAULT(<hook_name>) | |
703 | * | |
704 | * The macros below define static constants for the default value of each | |
705 | * LSM hook. | |
706 | */ | |
707 | #define LSM_RET_DEFAULT(NAME) (NAME##_default) | |
708 | #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME) | |
709 | #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \ | |
86dd9fd5 | 710 | static const int __maybe_unused LSM_RET_DEFAULT(NAME) = (DEFAULT); |
98e828a0 KS |
711 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ |
712 | DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME) | |
713 | ||
714 | #include <linux/lsm_hook_defs.h> | |
715 | #undef LSM_HOOK | |
716 | ||
f25fce3e | 717 | /* |
b1d9e6b0 | 718 | * Hook list operation macros. |
1da177e4 | 719 | * |
f25fce3e CS |
720 | * call_void_hook: |
721 | * This is a hook that does not return a value. | |
1da177e4 | 722 | * |
f25fce3e CS |
723 | * call_int_hook: |
724 | * This is a hook that returns a value. | |
1da177e4 | 725 | */ |
1da177e4 | 726 | |
b1d9e6b0 CS |
727 | #define call_void_hook(FUNC, ...) \ |
728 | do { \ | |
729 | struct security_hook_list *P; \ | |
730 | \ | |
df0ce173 | 731 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
732 | P->hook.FUNC(__VA_ARGS__); \ |
733 | } while (0) | |
734 | ||
735 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
736 | int RC = IRC; \ | |
737 | do { \ | |
738 | struct security_hook_list *P; \ | |
739 | \ | |
df0ce173 | 740 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
741 | RC = P->hook.FUNC(__VA_ARGS__); \ |
742 | if (RC != 0) \ | |
743 | break; \ | |
744 | } \ | |
745 | } while (0); \ | |
746 | RC; \ | |
747 | }) | |
1da177e4 | 748 | |
20510f2f JM |
749 | /* Security operations */ |
750 | ||
52f88693 | 751 | int security_binder_set_context_mgr(const struct cred *mgr) |
79af7307 | 752 | { |
f25fce3e | 753 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 SS |
754 | } |
755 | ||
52f88693 TK |
756 | int security_binder_transaction(const struct cred *from, |
757 | const struct cred *to) | |
79af7307 | 758 | { |
f25fce3e | 759 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 SS |
760 | } |
761 | ||
52f88693 TK |
762 | int security_binder_transfer_binder(const struct cred *from, |
763 | const struct cred *to) | |
79af7307 | 764 | { |
f25fce3e | 765 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 SS |
766 | } |
767 | ||
52f88693 TK |
768 | int security_binder_transfer_file(const struct cred *from, |
769 | const struct cred *to, struct file *file) | |
79af7307 | 770 | { |
f25fce3e | 771 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 SS |
772 | } |
773 | ||
9e48858f | 774 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 775 | { |
f25fce3e | 776 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
777 | } |
778 | ||
779 | int security_ptrace_traceme(struct task_struct *parent) | |
780 | { | |
f25fce3e | 781 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
782 | } |
783 | ||
784 | int security_capget(struct task_struct *target, | |
785 | kernel_cap_t *effective, | |
786 | kernel_cap_t *inheritable, | |
787 | kernel_cap_t *permitted) | |
788 | { | |
f25fce3e CS |
789 | return call_int_hook(capget, 0, target, |
790 | effective, inheritable, permitted); | |
20510f2f JM |
791 | } |
792 | ||
d84f4f99 DH |
793 | int security_capset(struct cred *new, const struct cred *old, |
794 | const kernel_cap_t *effective, | |
795 | const kernel_cap_t *inheritable, | |
796 | const kernel_cap_t *permitted) | |
20510f2f | 797 | { |
f25fce3e CS |
798 | return call_int_hook(capset, 0, new, old, |
799 | effective, inheritable, permitted); | |
20510f2f JM |
800 | } |
801 | ||
c1a85a00 MM |
802 | int security_capable(const struct cred *cred, |
803 | struct user_namespace *ns, | |
804 | int cap, | |
805 | unsigned int opts) | |
20510f2f | 806 | { |
c1a85a00 | 807 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
808 | } |
809 | ||
20510f2f JM |
810 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
811 | { | |
f25fce3e | 812 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
813 | } |
814 | ||
815 | int security_quota_on(struct dentry *dentry) | |
816 | { | |
f25fce3e | 817 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
818 | } |
819 | ||
12b3052c | 820 | int security_syslog(int type) |
20510f2f | 821 | { |
f25fce3e | 822 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
823 | } |
824 | ||
457db29b | 825 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 826 | { |
f25fce3e | 827 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
828 | } |
829 | ||
20510f2f JM |
830 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
831 | { | |
b1d9e6b0 CS |
832 | struct security_hook_list *hp; |
833 | int cap_sys_admin = 1; | |
834 | int rc; | |
835 | ||
836 | /* | |
837 | * The module will respond with a positive value if | |
838 | * it thinks the __vm_enough_memory() call should be | |
839 | * made with the cap_sys_admin set. If all of the modules | |
840 | * agree that it should be set it will. If any module | |
841 | * thinks it should not be set it won't. | |
842 | */ | |
df0ce173 | 843 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
844 | rc = hp->hook.vm_enough_memory(mm, pages); |
845 | if (rc <= 0) { | |
846 | cap_sys_admin = 0; | |
847 | break; | |
848 | } | |
849 | } | |
850 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
851 | } |
852 | ||
b8bff599 | 853 | int security_bprm_creds_for_exec(struct linux_binprm *bprm) |
20510f2f | 854 | { |
b8bff599 EB |
855 | return call_int_hook(bprm_creds_for_exec, 0, bprm); |
856 | } | |
857 | ||
56305aa9 | 858 | int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file) |
20510f2f | 859 | { |
56305aa9 | 860 | return call_int_hook(bprm_creds_from_file, 0, bprm, file); |
20510f2f JM |
861 | } |
862 | ||
a6f76f23 | 863 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 864 | { |
6c21a7fb MZ |
865 | int ret; |
866 | ||
f25fce3e | 867 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
868 | if (ret) |
869 | return ret; | |
870 | return ima_bprm_check(bprm); | |
20510f2f JM |
871 | } |
872 | ||
a6f76f23 | 873 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 874 | { |
f25fce3e | 875 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
876 | } |
877 | ||
a6f76f23 | 878 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 879 | { |
f25fce3e | 880 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
881 | } |
882 | ||
0b52075e AV |
883 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
884 | { | |
885 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
886 | } | |
887 | ||
ecff3057 CS |
888 | int security_fs_context_parse_param(struct fs_context *fc, |
889 | struct fs_parameter *param) | |
da2441fd | 890 | { |
ecff3057 CS |
891 | struct security_hook_list *hp; |
892 | int trc; | |
893 | int rc = -ENOPARAM; | |
894 | ||
895 | hlist_for_each_entry(hp, &security_hook_heads.fs_context_parse_param, | |
896 | list) { | |
897 | trc = hp->hook.fs_context_parse_param(fc, param); | |
898 | if (trc == 0) | |
899 | rc = 0; | |
900 | else if (trc != -ENOPARAM) | |
901 | return trc; | |
902 | } | |
903 | return rc; | |
da2441fd DH |
904 | } |
905 | ||
20510f2f JM |
906 | int security_sb_alloc(struct super_block *sb) |
907 | { | |
1aea7808 CS |
908 | int rc = lsm_superblock_alloc(sb); |
909 | ||
910 | if (unlikely(rc)) | |
911 | return rc; | |
912 | rc = call_int_hook(sb_alloc_security, 0, sb); | |
913 | if (unlikely(rc)) | |
914 | security_sb_free(sb); | |
915 | return rc; | |
20510f2f JM |
916 | } |
917 | ||
83e804f0 MS |
918 | void security_sb_delete(struct super_block *sb) |
919 | { | |
920 | call_void_hook(sb_delete, sb); | |
20510f2f JM |
921 | } |
922 | ||
923 | void security_sb_free(struct super_block *sb) | |
924 | { | |
f25fce3e | 925 | call_void_hook(sb_free_security, sb); |
1aea7808 CS |
926 | kfree(sb->s_security); |
927 | sb->s_security = NULL; | |
20510f2f JM |
928 | } |
929 | ||
204cc0cc | 930 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 931 | { |
204cc0cc AV |
932 | if (!*mnt_opts) |
933 | return; | |
934 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
935 | *mnt_opts = NULL; | |
20510f2f | 936 | } |
204cc0cc | 937 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 938 | |
204cc0cc | 939 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 940 | { |
204cc0cc | 941 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 942 | } |
f5c0c26d | 943 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 944 | |
69c4a42d OK |
945 | int security_sb_mnt_opts_compat(struct super_block *sb, |
946 | void *mnt_opts) | |
947 | { | |
948 | return call_int_hook(sb_mnt_opts_compat, 0, sb, mnt_opts); | |
949 | } | |
950 | EXPORT_SYMBOL(security_sb_mnt_opts_compat); | |
951 | ||
c039bc3c | 952 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 953 | void *mnt_opts) |
20510f2f | 954 | { |
204cc0cc | 955 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 956 | } |
a65001e8 | 957 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 958 | |
a10d7c22 | 959 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 960 | { |
a10d7c22 | 961 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
962 | } |
963 | ||
2069f457 EP |
964 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
965 | { | |
f25fce3e | 966 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
967 | } |
968 | ||
20510f2f JM |
969 | int security_sb_statfs(struct dentry *dentry) |
970 | { | |
f25fce3e | 971 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
972 | } |
973 | ||
8a04c43b | 974 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 975 | const char *type, unsigned long flags, void *data) |
20510f2f | 976 | { |
f25fce3e | 977 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
978 | } |
979 | ||
20510f2f JM |
980 | int security_sb_umount(struct vfsmount *mnt, int flags) |
981 | { | |
f25fce3e | 982 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
983 | } |
984 | ||
3b73b68c | 985 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 986 | { |
f25fce3e | 987 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
988 | } |
989 | ||
c9180a57 | 990 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 991 | void *mnt_opts, |
649f6e77 DQ |
992 | unsigned long kern_flags, |
993 | unsigned long *set_kern_flags) | |
c9180a57 | 994 | { |
b1d9e6b0 | 995 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
996 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
997 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 998 | } |
e0007529 | 999 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 1000 | |
094f7b69 | 1001 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
1002 | struct super_block *newsb, |
1003 | unsigned long kern_flags, | |
1004 | unsigned long *set_kern_flags) | |
c9180a57 | 1005 | { |
0b4d3452 SM |
1006 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
1007 | kern_flags, set_kern_flags); | |
c9180a57 | 1008 | } |
e0007529 EP |
1009 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
1010 | ||
2db154b3 DH |
1011 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
1012 | { | |
1013 | return call_int_hook(move_mount, 0, from_path, to_path); | |
1014 | } | |
1015 | ||
ac5656d8 AG |
1016 | int security_path_notify(const struct path *path, u64 mask, |
1017 | unsigned int obj_type) | |
1018 | { | |
1019 | return call_int_hook(path_notify, 0, path, mask, obj_type); | |
1020 | } | |
1021 | ||
20510f2f JM |
1022 | int security_inode_alloc(struct inode *inode) |
1023 | { | |
afb1cbe3 CS |
1024 | int rc = lsm_inode_alloc(inode); |
1025 | ||
1026 | if (unlikely(rc)) | |
1027 | return rc; | |
1028 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
1029 | if (unlikely(rc)) | |
1030 | security_inode_free(inode); | |
1031 | return rc; | |
1032 | } | |
1033 | ||
1034 | static void inode_free_by_rcu(struct rcu_head *head) | |
1035 | { | |
1036 | /* | |
1037 | * The rcu head is at the start of the inode blob | |
1038 | */ | |
1039 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
1040 | } |
1041 | ||
1042 | void security_inode_free(struct inode *inode) | |
1043 | { | |
f381c272 | 1044 | integrity_inode_free(inode); |
f25fce3e | 1045 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
1046 | /* |
1047 | * The inode may still be referenced in a path walk and | |
1048 | * a call to security_inode_permission() can be made | |
1049 | * after inode_free_security() is called. Ideally, the VFS | |
1050 | * wouldn't do this, but fixing that is a much harder | |
1051 | * job. For now, simply free the i_security via RCU, and | |
1052 | * leave the current inode->i_security pointer intact. | |
1053 | * The inode will be freed after the RCU grace period too. | |
1054 | */ | |
1055 | if (inode->i_security) | |
1056 | call_rcu((struct rcu_head *)inode->i_security, | |
1057 | inode_free_by_rcu); | |
20510f2f JM |
1058 | } |
1059 | ||
d47be3df | 1060 | int security_dentry_init_security(struct dentry *dentry, int mode, |
15bf3239 VG |
1061 | const struct qstr *name, |
1062 | const char **xattr_name, void **ctx, | |
1063 | u32 *ctxlen) | |
d47be3df | 1064 | { |
7f5056b9 VG |
1065 | struct security_hook_list *hp; |
1066 | int rc; | |
1067 | ||
1068 | /* | |
1069 | * Only one module will provide a security context. | |
1070 | */ | |
1071 | hlist_for_each_entry(hp, &security_hook_heads.dentry_init_security, list) { | |
1072 | rc = hp->hook.dentry_init_security(dentry, mode, name, | |
1073 | xattr_name, ctx, ctxlen); | |
1074 | if (rc != LSM_RET_DEFAULT(dentry_init_security)) | |
1075 | return rc; | |
1076 | } | |
1077 | return LSM_RET_DEFAULT(dentry_init_security); | |
d47be3df DQ |
1078 | } |
1079 | EXPORT_SYMBOL(security_dentry_init_security); | |
1080 | ||
2602625b VG |
1081 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
1082 | struct qstr *name, | |
1083 | const struct cred *old, struct cred *new) | |
1084 | { | |
1085 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
1086 | name, old, new); | |
1087 | } | |
1088 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
1089 | ||
20510f2f | 1090 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
1091 | const struct qstr *qstr, |
1092 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 1093 | { |
823eb1cc MZ |
1094 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
1095 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
1096 | int ret; |
1097 | ||
20510f2f | 1098 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 1099 | return 0; |
9d8f13ba | 1100 | |
9d8f13ba | 1101 | if (!initxattrs) |
e308fd3b JB |
1102 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
1103 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 1104 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 1105 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 1106 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
1107 | &lsm_xattr->name, |
1108 | &lsm_xattr->value, | |
1109 | &lsm_xattr->value_len); | |
1110 | if (ret) | |
1111 | goto out; | |
823eb1cc MZ |
1112 | |
1113 | evm_xattr = lsm_xattr + 1; | |
1114 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1115 | if (ret) | |
1116 | goto out; | |
9d8f13ba MZ |
1117 | ret = initxattrs(inode, new_xattrs, fs_data); |
1118 | out: | |
9548906b | 1119 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1120 | kfree(xattr->value); |
9d8f13ba MZ |
1121 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1122 | } | |
1123 | EXPORT_SYMBOL(security_inode_init_security); | |
1124 | ||
215b674b LG |
1125 | int security_inode_init_security_anon(struct inode *inode, |
1126 | const struct qstr *name, | |
1127 | const struct inode *context_inode) | |
1128 | { | |
1129 | return call_int_hook(inode_init_security_anon, 0, inode, name, | |
1130 | context_inode); | |
1131 | } | |
1132 | ||
9d8f13ba | 1133 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, |
9548906b | 1134 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1135 | void **value, size_t *len) |
20510f2f JM |
1136 | { |
1137 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1138 | return -EOPNOTSUPP; |
e308fd3b JB |
1139 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1140 | qstr, name, value, len); | |
20510f2f | 1141 | } |
9d8f13ba | 1142 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1143 | |
be6d3e56 | 1144 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1145 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1146 | unsigned int dev) |
1147 | { | |
c6f493d6 | 1148 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1149 | return 0; |
f25fce3e | 1150 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1151 | } |
1152 | EXPORT_SYMBOL(security_path_mknod); | |
1153 | ||
d3607752 | 1154 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1155 | { |
c6f493d6 | 1156 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1157 | return 0; |
f25fce3e | 1158 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1159 | } |
82140443 | 1160 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1161 | |
989f74e0 | 1162 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1163 | { |
c6f493d6 | 1164 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1165 | return 0; |
f25fce3e | 1166 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 KT |
1167 | } |
1168 | ||
989f74e0 | 1169 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1170 | { |
c6f493d6 | 1171 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1172 | return 0; |
f25fce3e | 1173 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1174 | } |
82140443 | 1175 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1176 | |
d3607752 | 1177 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1178 | const char *old_name) |
1179 | { | |
c6f493d6 | 1180 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1181 | return 0; |
f25fce3e | 1182 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 KT |
1183 | } |
1184 | ||
3ccee46a | 1185 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1186 | struct dentry *new_dentry) |
1187 | { | |
c6f493d6 | 1188 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1189 | return 0; |
f25fce3e | 1190 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 KT |
1191 | } |
1192 | ||
3ccee46a AV |
1193 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1194 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1195 | unsigned int flags) |
be6d3e56 | 1196 | { |
c6f493d6 DH |
1197 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1198 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1199 | return 0; |
da1ce067 | 1200 | |
f25fce3e | 1201 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
100f59d9 | 1202 | new_dentry, flags); |
be6d3e56 | 1203 | } |
82140443 | 1204 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1205 | |
81f4c506 | 1206 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1207 | { |
c6f493d6 | 1208 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1209 | return 0; |
f25fce3e | 1210 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1211 | } |
89eda068 | 1212 | |
be01f9f2 | 1213 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1214 | { |
c6f493d6 | 1215 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1216 | return 0; |
f25fce3e | 1217 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 TH |
1218 | } |
1219 | ||
7fd25dac | 1220 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1221 | { |
c6f493d6 | 1222 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1223 | return 0; |
f25fce3e | 1224 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1225 | } |
8b8efb44 | 1226 | |
77b286c0 | 1227 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1228 | { |
f25fce3e | 1229 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1230 | } |
be6d3e56 KT |
1231 | #endif |
1232 | ||
4acdaf27 | 1233 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1234 | { |
1235 | if (unlikely(IS_PRIVATE(dir))) | |
1236 | return 0; | |
f25fce3e | 1237 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1238 | } |
800a9647 | 1239 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1240 | |
1241 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1242 | struct dentry *new_dentry) | |
1243 | { | |
c6f493d6 | 1244 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1245 | return 0; |
f25fce3e | 1246 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1247 | } |
1248 | ||
1249 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1250 | { | |
c6f493d6 | 1251 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1252 | return 0; |
f25fce3e | 1253 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1254 | } |
1255 | ||
1256 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1257 | const char *old_name) | |
1258 | { | |
1259 | if (unlikely(IS_PRIVATE(dir))) | |
1260 | return 0; | |
f25fce3e | 1261 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1262 | } |
1263 | ||
18bb1db3 | 1264 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1265 | { |
1266 | if (unlikely(IS_PRIVATE(dir))) | |
1267 | return 0; | |
f25fce3e | 1268 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1269 | } |
800a9647 | 1270 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1271 | |
1272 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1273 | { | |
c6f493d6 | 1274 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1275 | return 0; |
f25fce3e | 1276 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1277 | } |
1278 | ||
1a67aafb | 1279 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1280 | { |
1281 | if (unlikely(IS_PRIVATE(dir))) | |
1282 | return 0; | |
f25fce3e | 1283 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1284 | } |
1285 | ||
1286 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1287 | struct inode *new_dir, struct dentry *new_dentry, |
1288 | unsigned int flags) | |
20510f2f | 1289 | { |
c6f493d6 DH |
1290 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1291 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1292 | return 0; |
da1ce067 MS |
1293 | |
1294 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1295 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1296 | old_dir, old_dentry); |
1297 | if (err) | |
1298 | return err; | |
1299 | } | |
1300 | ||
f25fce3e | 1301 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1302 | new_dir, new_dentry); |
1303 | } | |
1304 | ||
1305 | int security_inode_readlink(struct dentry *dentry) | |
1306 | { | |
c6f493d6 | 1307 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1308 | return 0; |
f25fce3e | 1309 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1310 | } |
1311 | ||
bda0be7a N |
1312 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1313 | bool rcu) | |
20510f2f | 1314 | { |
bda0be7a | 1315 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1316 | return 0; |
e22619a2 | 1317 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1318 | } |
1319 | ||
b77b0646 | 1320 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1321 | { |
1322 | if (unlikely(IS_PRIVATE(inode))) | |
1323 | return 0; | |
f25fce3e | 1324 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f JM |
1325 | } |
1326 | ||
1327 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1328 | { | |
817b54aa MZ |
1329 | int ret; |
1330 | ||
c6f493d6 | 1331 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1332 | return 0; |
f25fce3e | 1333 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1334 | if (ret) |
1335 | return ret; | |
1336 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1337 | } |
b1da47e2 | 1338 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1339 | |
3f7036a0 | 1340 | int security_inode_getattr(const struct path *path) |
20510f2f | 1341 | { |
c6f493d6 | 1342 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1343 | return 0; |
f25fce3e | 1344 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1345 | } |
1346 | ||
71bc356f CB |
1347 | int security_inode_setxattr(struct user_namespace *mnt_userns, |
1348 | struct dentry *dentry, const char *name, | |
8f0cfa52 | 1349 | const void *value, size_t size, int flags) |
20510f2f | 1350 | { |
3e1be52d MZ |
1351 | int ret; |
1352 | ||
c6f493d6 | 1353 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1354 | return 0; |
b1d9e6b0 CS |
1355 | /* |
1356 | * SELinux and Smack integrate the cap call, | |
1357 | * so assume that all LSMs supplying this call do so. | |
1358 | */ | |
71bc356f CB |
1359 | ret = call_int_hook(inode_setxattr, 1, mnt_userns, dentry, name, value, |
1360 | size, flags); | |
b1d9e6b0 CS |
1361 | |
1362 | if (ret == 1) | |
1363 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1364 | if (ret) |
1365 | return ret; | |
1366 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1367 | if (ret) |
1368 | return ret; | |
7e135dc7 | 1369 | return evm_inode_setxattr(mnt_userns, dentry, name, value, size); |
20510f2f JM |
1370 | } |
1371 | ||
8f0cfa52 DH |
1372 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1373 | const void *value, size_t size, int flags) | |
20510f2f | 1374 | { |
c6f493d6 | 1375 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1376 | return; |
f25fce3e | 1377 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1378 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1379 | } |
1380 | ||
8f0cfa52 | 1381 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1382 | { |
c6f493d6 | 1383 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1384 | return 0; |
f25fce3e | 1385 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1386 | } |
1387 | ||
1388 | int security_inode_listxattr(struct dentry *dentry) | |
1389 | { | |
c6f493d6 | 1390 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1391 | return 0; |
f25fce3e | 1392 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1393 | } |
1394 | ||
71bc356f CB |
1395 | int security_inode_removexattr(struct user_namespace *mnt_userns, |
1396 | struct dentry *dentry, const char *name) | |
20510f2f | 1397 | { |
3e1be52d MZ |
1398 | int ret; |
1399 | ||
c6f493d6 | 1400 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1401 | return 0; |
b1d9e6b0 CS |
1402 | /* |
1403 | * SELinux and Smack integrate the cap call, | |
1404 | * so assume that all LSMs supplying this call do so. | |
1405 | */ | |
71bc356f | 1406 | ret = call_int_hook(inode_removexattr, 1, mnt_userns, dentry, name); |
b1d9e6b0 | 1407 | if (ret == 1) |
71bc356f | 1408 | ret = cap_inode_removexattr(mnt_userns, dentry, name); |
42c63330 MZ |
1409 | if (ret) |
1410 | return ret; | |
1411 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1412 | if (ret) |
1413 | return ret; | |
7e135dc7 | 1414 | return evm_inode_removexattr(mnt_userns, dentry, name); |
20510f2f JM |
1415 | } |
1416 | ||
b5376771 SH |
1417 | int security_inode_need_killpriv(struct dentry *dentry) |
1418 | { | |
f25fce3e | 1419 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1420 | } |
1421 | ||
71bc356f CB |
1422 | int security_inode_killpriv(struct user_namespace *mnt_userns, |
1423 | struct dentry *dentry) | |
b5376771 | 1424 | { |
71bc356f | 1425 | return call_int_hook(inode_killpriv, 0, mnt_userns, dentry); |
b5376771 SH |
1426 | } |
1427 | ||
71bc356f CB |
1428 | int security_inode_getsecurity(struct user_namespace *mnt_userns, |
1429 | struct inode *inode, const char *name, | |
1430 | void **buffer, bool alloc) | |
20510f2f | 1431 | { |
2885c1e3 CS |
1432 | struct security_hook_list *hp; |
1433 | int rc; | |
1434 | ||
20510f2f | 1435 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1436 | return LSM_RET_DEFAULT(inode_getsecurity); |
2885c1e3 CS |
1437 | /* |
1438 | * Only one module will provide an attribute with a given name. | |
1439 | */ | |
df0ce173 | 1440 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
71bc356f | 1441 | rc = hp->hook.inode_getsecurity(mnt_userns, inode, name, buffer, alloc); |
98e828a0 | 1442 | if (rc != LSM_RET_DEFAULT(inode_getsecurity)) |
2885c1e3 CS |
1443 | return rc; |
1444 | } | |
98e828a0 | 1445 | return LSM_RET_DEFAULT(inode_getsecurity); |
20510f2f JM |
1446 | } |
1447 | ||
1448 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1449 | { | |
2885c1e3 CS |
1450 | struct security_hook_list *hp; |
1451 | int rc; | |
1452 | ||
20510f2f | 1453 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1454 | return LSM_RET_DEFAULT(inode_setsecurity); |
2885c1e3 CS |
1455 | /* |
1456 | * Only one module will provide an attribute with a given name. | |
1457 | */ | |
df0ce173 | 1458 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1459 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1460 | flags); | |
98e828a0 | 1461 | if (rc != LSM_RET_DEFAULT(inode_setsecurity)) |
2885c1e3 CS |
1462 | return rc; |
1463 | } | |
98e828a0 | 1464 | return LSM_RET_DEFAULT(inode_setsecurity); |
20510f2f JM |
1465 | } |
1466 | ||
1467 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1468 | { | |
1469 | if (unlikely(IS_PRIVATE(inode))) | |
1470 | return 0; | |
f25fce3e | 1471 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1472 | } |
c9bccef6 | 1473 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1474 | |
d6335d77 | 1475 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1476 | { |
f25fce3e | 1477 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1478 | } |
1479 | ||
d8ad8b49 VG |
1480 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1481 | { | |
1482 | return call_int_hook(inode_copy_up, 0, src, new); | |
1483 | } | |
1484 | EXPORT_SYMBOL(security_inode_copy_up); | |
1485 | ||
121ab822 VG |
1486 | int security_inode_copy_up_xattr(const char *name) |
1487 | { | |
23e390cd KS |
1488 | struct security_hook_list *hp; |
1489 | int rc; | |
1490 | ||
1491 | /* | |
1492 | * The implementation can return 0 (accept the xattr), 1 (discard the | |
1493 | * xattr), -EOPNOTSUPP if it does not know anything about the xattr or | |
1494 | * any other error code incase of an error. | |
1495 | */ | |
1496 | hlist_for_each_entry(hp, | |
1497 | &security_hook_heads.inode_copy_up_xattr, list) { | |
1498 | rc = hp->hook.inode_copy_up_xattr(name); | |
1499 | if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr)) | |
1500 | return rc; | |
1501 | } | |
1502 | ||
1503 | return LSM_RET_DEFAULT(inode_copy_up_xattr); | |
121ab822 VG |
1504 | } |
1505 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1506 | ||
b230d5ab OM |
1507 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1508 | struct kernfs_node *kn) | |
1509 | { | |
1510 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1511 | } | |
1512 | ||
20510f2f JM |
1513 | int security_file_permission(struct file *file, int mask) |
1514 | { | |
c4ec54b4 EP |
1515 | int ret; |
1516 | ||
f25fce3e | 1517 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1518 | if (ret) |
1519 | return ret; | |
1520 | ||
1521 | return fsnotify_perm(file, mask); | |
20510f2f JM |
1522 | } |
1523 | ||
1524 | int security_file_alloc(struct file *file) | |
1525 | { | |
33bf60ca CS |
1526 | int rc = lsm_file_alloc(file); |
1527 | ||
1528 | if (rc) | |
1529 | return rc; | |
1530 | rc = call_int_hook(file_alloc_security, 0, file); | |
1531 | if (unlikely(rc)) | |
1532 | security_file_free(file); | |
1533 | return rc; | |
20510f2f JM |
1534 | } |
1535 | ||
1536 | void security_file_free(struct file *file) | |
1537 | { | |
33bf60ca CS |
1538 | void *blob; |
1539 | ||
f25fce3e | 1540 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1541 | |
1542 | blob = file->f_security; | |
1543 | if (blob) { | |
1544 | file->f_security = NULL; | |
1545 | kmem_cache_free(lsm_file_cache, blob); | |
1546 | } | |
20510f2f JM |
1547 | } |
1548 | ||
1549 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1550 | { | |
f25fce3e | 1551 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f | 1552 | } |
292f902a | 1553 | EXPORT_SYMBOL_GPL(security_file_ioctl); |
20510f2f | 1554 | |
98de59bf | 1555 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1556 | { |
8b3ec681 | 1557 | /* |
98de59bf AV |
1558 | * Does we have PROT_READ and does the application expect |
1559 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1560 | */ |
98de59bf AV |
1561 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1562 | return prot; | |
8b3ec681 | 1563 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1564 | return prot; |
1565 | /* | |
1566 | * if that's an anonymous mapping, let it. | |
1567 | */ | |
1568 | if (!file) | |
1569 | return prot | PROT_EXEC; | |
1570 | /* | |
1571 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1572 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1573 | */ |
90f8572b | 1574 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1575 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1576 | if (file->f_op->mmap_capabilities) { |
1577 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1578 | if (!(caps & NOMMU_MAP_EXEC)) | |
1579 | return prot; | |
1580 | } | |
8b3ec681 | 1581 | #endif |
98de59bf | 1582 | return prot | PROT_EXEC; |
8b3ec681 | 1583 | } |
98de59bf AV |
1584 | /* anything on noexec mount won't get PROT_EXEC */ |
1585 | return prot; | |
1586 | } | |
1587 | ||
1588 | int security_mmap_file(struct file *file, unsigned long prot, | |
1589 | unsigned long flags) | |
1590 | { | |
1591 | int ret; | |
f25fce3e | 1592 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1593 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1594 | if (ret) |
1595 | return ret; | |
1596 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1597 | } |
1598 | ||
e5467859 AV |
1599 | int security_mmap_addr(unsigned long addr) |
1600 | { | |
f25fce3e | 1601 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1602 | } |
1603 | ||
20510f2f JM |
1604 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1605 | unsigned long prot) | |
1606 | { | |
8eb613c0 MZ |
1607 | int ret; |
1608 | ||
1609 | ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot); | |
1610 | if (ret) | |
1611 | return ret; | |
1612 | return ima_file_mprotect(vma, prot); | |
20510f2f JM |
1613 | } |
1614 | ||
1615 | int security_file_lock(struct file *file, unsigned int cmd) | |
1616 | { | |
f25fce3e | 1617 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1618 | } |
1619 | ||
1620 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1621 | { | |
f25fce3e | 1622 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1623 | } |
1624 | ||
e0b93edd | 1625 | void security_file_set_fowner(struct file *file) |
20510f2f | 1626 | { |
f25fce3e | 1627 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1628 | } |
1629 | ||
1630 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1631 | struct fown_struct *fown, int sig) | |
1632 | { | |
f25fce3e | 1633 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1634 | } |
1635 | ||
1636 | int security_file_receive(struct file *file) | |
1637 | { | |
f25fce3e | 1638 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1639 | } |
1640 | ||
e3f20ae2 | 1641 | int security_file_open(struct file *file) |
20510f2f | 1642 | { |
c4ec54b4 EP |
1643 | int ret; |
1644 | ||
94817692 | 1645 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1646 | if (ret) |
1647 | return ret; | |
1648 | ||
1649 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1650 | } |
1651 | ||
e4e55b47 TH |
1652 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1653 | { | |
f4ad8f2c CS |
1654 | int rc = lsm_task_alloc(task); |
1655 | ||
1656 | if (rc) | |
1657 | return rc; | |
1658 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1659 | if (unlikely(rc)) | |
1660 | security_task_free(task); | |
1661 | return rc; | |
e4e55b47 TH |
1662 | } |
1663 | ||
1a2a4d06 KC |
1664 | void security_task_free(struct task_struct *task) |
1665 | { | |
f25fce3e | 1666 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1667 | |
1668 | kfree(task->security); | |
1669 | task->security = NULL; | |
1a2a4d06 KC |
1670 | } |
1671 | ||
ee18d64c DH |
1672 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1673 | { | |
bbd3662a CS |
1674 | int rc = lsm_cred_alloc(cred, gfp); |
1675 | ||
1676 | if (rc) | |
1677 | return rc; | |
1678 | ||
1679 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1680 | if (unlikely(rc)) |
bbd3662a CS |
1681 | security_cred_free(cred); |
1682 | return rc; | |
ee18d64c DH |
1683 | } |
1684 | ||
d84f4f99 | 1685 | void security_cred_free(struct cred *cred) |
20510f2f | 1686 | { |
a5795fd3 JM |
1687 | /* |
1688 | * There is a failure case in prepare_creds() that | |
1689 | * may result in a call here with ->security being NULL. | |
1690 | */ | |
1691 | if (unlikely(cred->security == NULL)) | |
1692 | return; | |
1693 | ||
f25fce3e | 1694 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1695 | |
1696 | kfree(cred->security); | |
1697 | cred->security = NULL; | |
20510f2f JM |
1698 | } |
1699 | ||
d84f4f99 | 1700 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1701 | { |
bbd3662a CS |
1702 | int rc = lsm_cred_alloc(new, gfp); |
1703 | ||
1704 | if (rc) | |
1705 | return rc; | |
1706 | ||
1707 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1708 | if (unlikely(rc)) |
bbd3662a CS |
1709 | security_cred_free(new); |
1710 | return rc; | |
d84f4f99 DH |
1711 | } |
1712 | ||
ee18d64c DH |
1713 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1714 | { | |
f25fce3e | 1715 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1716 | } |
1717 | ||
3ec30113 MG |
1718 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
1719 | { | |
1720 | *secid = 0; | |
1721 | call_void_hook(cred_getsecid, c, secid); | |
1722 | } | |
1723 | EXPORT_SYMBOL(security_cred_getsecid); | |
1724 | ||
3a3b7ce9 DH |
1725 | int security_kernel_act_as(struct cred *new, u32 secid) |
1726 | { | |
f25fce3e | 1727 | return call_int_hook(kernel_act_as, 0, new, secid); |
3a3b7ce9 DH |
1728 | } |
1729 | ||
1730 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1731 | { | |
f25fce3e | 1732 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1733 | } |
1734 | ||
dd8dbf2e | 1735 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1736 | { |
6eb864c1 MK |
1737 | int ret; |
1738 | ||
1739 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1740 | if (ret) | |
1741 | return ret; | |
1742 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1743 | } |
1744 | ||
2039bda1 KC |
1745 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, |
1746 | bool contents) | |
39eeb4fb MZ |
1747 | { |
1748 | int ret; | |
1749 | ||
2039bda1 | 1750 | ret = call_int_hook(kernel_read_file, 0, file, id, contents); |
39eeb4fb MZ |
1751 | if (ret) |
1752 | return ret; | |
2039bda1 | 1753 | return ima_read_file(file, id, contents); |
39eeb4fb MZ |
1754 | } |
1755 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1756 | ||
bc8ca5b9 MZ |
1757 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1758 | enum kernel_read_file_id id) | |
b44a7dfc | 1759 | { |
cf222217 MZ |
1760 | int ret; |
1761 | ||
1762 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1763 | if (ret) | |
1764 | return ret; | |
1765 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1766 | } |
1767 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1768 | ||
b64fcae7 | 1769 | int security_kernel_load_data(enum kernel_load_data_id id, bool contents) |
377179cd | 1770 | { |
16c267aa MZ |
1771 | int ret; |
1772 | ||
b64fcae7 | 1773 | ret = call_int_hook(kernel_load_data, 0, id, contents); |
16c267aa MZ |
1774 | if (ret) |
1775 | return ret; | |
b64fcae7 | 1776 | return ima_load_data(id, contents); |
377179cd | 1777 | } |
83a68a06 | 1778 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1779 | |
b64fcae7 KC |
1780 | int security_kernel_post_load_data(char *buf, loff_t size, |
1781 | enum kernel_load_data_id id, | |
1782 | char *description) | |
1783 | { | |
1784 | int ret; | |
1785 | ||
1786 | ret = call_int_hook(kernel_post_load_data, 0, buf, size, id, | |
1787 | description); | |
1788 | if (ret) | |
1789 | return ret; | |
1790 | return ima_post_load_data(buf, size, id, description); | |
1791 | } | |
1792 | EXPORT_SYMBOL_GPL(security_kernel_post_load_data); | |
1793 | ||
d84f4f99 DH |
1794 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1795 | int flags) | |
20510f2f | 1796 | { |
f25fce3e | 1797 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1798 | } |
1799 | ||
39030e13 TC |
1800 | int security_task_fix_setgid(struct cred *new, const struct cred *old, |
1801 | int flags) | |
1802 | { | |
1803 | return call_int_hook(task_fix_setgid, 0, new, old, flags); | |
1804 | } | |
1805 | ||
20510f2f JM |
1806 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1807 | { | |
f25fce3e | 1808 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1809 | } |
1810 | ||
1811 | int security_task_getpgid(struct task_struct *p) | |
1812 | { | |
f25fce3e | 1813 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1814 | } |
1815 | ||
1816 | int security_task_getsid(struct task_struct *p) | |
1817 | { | |
f25fce3e | 1818 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1819 | } |
1820 | ||
6326948f | 1821 | void security_current_getsecid_subj(u32 *secid) |
20510f2f | 1822 | { |
b1d9e6b0 | 1823 | *secid = 0; |
6326948f | 1824 | call_void_hook(current_getsecid_subj, secid); |
20510f2f | 1825 | } |
6326948f | 1826 | EXPORT_SYMBOL(security_current_getsecid_subj); |
4ebd7651 PM |
1827 | |
1828 | void security_task_getsecid_obj(struct task_struct *p, u32 *secid) | |
1829 | { | |
1830 | *secid = 0; | |
1831 | call_void_hook(task_getsecid_obj, p, secid); | |
1832 | } | |
1833 | EXPORT_SYMBOL(security_task_getsecid_obj); | |
20510f2f | 1834 | |
20510f2f JM |
1835 | int security_task_setnice(struct task_struct *p, int nice) |
1836 | { | |
f25fce3e | 1837 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1838 | } |
1839 | ||
1840 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1841 | { | |
f25fce3e | 1842 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1843 | } |
1844 | ||
1845 | int security_task_getioprio(struct task_struct *p) | |
1846 | { | |
f25fce3e | 1847 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1848 | } |
1849 | ||
791ec491 SS |
1850 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1851 | unsigned int flags) | |
1852 | { | |
1853 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1854 | } | |
1855 | ||
8fd00b4d JS |
1856 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1857 | struct rlimit *new_rlim) | |
20510f2f | 1858 | { |
f25fce3e | 1859 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1860 | } |
1861 | ||
b0ae1981 | 1862 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1863 | { |
f25fce3e | 1864 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1865 | } |
1866 | ||
1867 | int security_task_getscheduler(struct task_struct *p) | |
1868 | { | |
f25fce3e | 1869 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1870 | } |
1871 | ||
1872 | int security_task_movememory(struct task_struct *p) | |
1873 | { | |
f25fce3e | 1874 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1875 | } |
1876 | ||
ae7795bc | 1877 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 1878 | int sig, const struct cred *cred) |
20510f2f | 1879 | { |
6b4f3d01 | 1880 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
1881 | } |
1882 | ||
20510f2f | 1883 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1884 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1885 | { |
b1d9e6b0 | 1886 | int thisrc; |
98e828a0 | 1887 | int rc = LSM_RET_DEFAULT(task_prctl); |
b1d9e6b0 CS |
1888 | struct security_hook_list *hp; |
1889 | ||
df0ce173 | 1890 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 | 1891 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
98e828a0 | 1892 | if (thisrc != LSM_RET_DEFAULT(task_prctl)) { |
b1d9e6b0 CS |
1893 | rc = thisrc; |
1894 | if (thisrc != 0) | |
1895 | break; | |
1896 | } | |
1897 | } | |
1898 | return rc; | |
20510f2f JM |
1899 | } |
1900 | ||
1901 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1902 | { | |
f25fce3e | 1903 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1904 | } |
1905 | ||
1906 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1907 | { | |
f25fce3e | 1908 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1909 | } |
1910 | ||
8a076191 AD |
1911 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1912 | { | |
b1d9e6b0 | 1913 | *secid = 0; |
f25fce3e | 1914 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1915 | } |
1916 | ||
20510f2f JM |
1917 | int security_msg_msg_alloc(struct msg_msg *msg) |
1918 | { | |
ecd5f82e CS |
1919 | int rc = lsm_msg_msg_alloc(msg); |
1920 | ||
1921 | if (unlikely(rc)) | |
1922 | return rc; | |
1923 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
1924 | if (unlikely(rc)) | |
1925 | security_msg_msg_free(msg); | |
1926 | return rc; | |
20510f2f JM |
1927 | } |
1928 | ||
1929 | void security_msg_msg_free(struct msg_msg *msg) | |
1930 | { | |
f25fce3e | 1931 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
1932 | kfree(msg->security); |
1933 | msg->security = NULL; | |
20510f2f JM |
1934 | } |
1935 | ||
d8c6e854 | 1936 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 1937 | { |
ecd5f82e CS |
1938 | int rc = lsm_ipc_alloc(msq); |
1939 | ||
1940 | if (unlikely(rc)) | |
1941 | return rc; | |
1942 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
1943 | if (unlikely(rc)) | |
1944 | security_msg_queue_free(msq); | |
1945 | return rc; | |
20510f2f JM |
1946 | } |
1947 | ||
d8c6e854 | 1948 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 1949 | { |
f25fce3e | 1950 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
1951 | kfree(msq->security); |
1952 | msq->security = NULL; | |
20510f2f JM |
1953 | } |
1954 | ||
d8c6e854 | 1955 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 1956 | { |
f25fce3e | 1957 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
1958 | } |
1959 | ||
d8c6e854 | 1960 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 1961 | { |
f25fce3e | 1962 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
1963 | } |
1964 | ||
d8c6e854 | 1965 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
1966 | struct msg_msg *msg, int msqflg) |
1967 | { | |
f25fce3e | 1968 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
1969 | } |
1970 | ||
d8c6e854 | 1971 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
1972 | struct task_struct *target, long type, int mode) |
1973 | { | |
f25fce3e | 1974 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
1975 | } |
1976 | ||
7191adff | 1977 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 1978 | { |
ecd5f82e CS |
1979 | int rc = lsm_ipc_alloc(shp); |
1980 | ||
1981 | if (unlikely(rc)) | |
1982 | return rc; | |
1983 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
1984 | if (unlikely(rc)) | |
1985 | security_shm_free(shp); | |
1986 | return rc; | |
20510f2f JM |
1987 | } |
1988 | ||
7191adff | 1989 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 1990 | { |
f25fce3e | 1991 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
1992 | kfree(shp->security); |
1993 | shp->security = NULL; | |
20510f2f JM |
1994 | } |
1995 | ||
7191adff | 1996 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 1997 | { |
f25fce3e | 1998 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
1999 | } |
2000 | ||
7191adff | 2001 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 2002 | { |
f25fce3e | 2003 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
2004 | } |
2005 | ||
7191adff | 2006 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 2007 | { |
f25fce3e | 2008 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
2009 | } |
2010 | ||
aefad959 | 2011 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 2012 | { |
ecd5f82e CS |
2013 | int rc = lsm_ipc_alloc(sma); |
2014 | ||
2015 | if (unlikely(rc)) | |
2016 | return rc; | |
2017 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
2018 | if (unlikely(rc)) | |
2019 | security_sem_free(sma); | |
2020 | return rc; | |
20510f2f JM |
2021 | } |
2022 | ||
aefad959 | 2023 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 2024 | { |
f25fce3e | 2025 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
2026 | kfree(sma->security); |
2027 | sma->security = NULL; | |
20510f2f JM |
2028 | } |
2029 | ||
aefad959 | 2030 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 2031 | { |
f25fce3e | 2032 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
2033 | } |
2034 | ||
aefad959 | 2035 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 2036 | { |
f25fce3e | 2037 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
2038 | } |
2039 | ||
aefad959 | 2040 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
2041 | unsigned nsops, int alter) |
2042 | { | |
f25fce3e | 2043 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
2044 | } |
2045 | ||
2046 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
2047 | { | |
2048 | if (unlikely(inode && IS_PRIVATE(inode))) | |
2049 | return; | |
f25fce3e | 2050 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
2051 | } |
2052 | EXPORT_SYMBOL(security_d_instantiate); | |
2053 | ||
6d9c939d CS |
2054 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
2055 | char **value) | |
20510f2f | 2056 | { |
6d9c939d CS |
2057 | struct security_hook_list *hp; |
2058 | ||
2059 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
2060 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
2061 | continue; | |
2062 | return hp->hook.getprocattr(p, name, value); | |
2063 | } | |
98e828a0 | 2064 | return LSM_RET_DEFAULT(getprocattr); |
20510f2f JM |
2065 | } |
2066 | ||
6d9c939d CS |
2067 | int security_setprocattr(const char *lsm, const char *name, void *value, |
2068 | size_t size) | |
20510f2f | 2069 | { |
6d9c939d CS |
2070 | struct security_hook_list *hp; |
2071 | ||
2072 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
2073 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
2074 | continue; | |
2075 | return hp->hook.setprocattr(name, value, size); | |
2076 | } | |
98e828a0 | 2077 | return LSM_RET_DEFAULT(setprocattr); |
20510f2f JM |
2078 | } |
2079 | ||
2080 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2081 | { | |
f25fce3e | 2082 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2083 | } |
20510f2f | 2084 | |
746df9b5 DQ |
2085 | int security_ismaclabel(const char *name) |
2086 | { | |
f25fce3e | 2087 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2088 | } |
2089 | EXPORT_SYMBOL(security_ismaclabel); | |
2090 | ||
20510f2f JM |
2091 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
2092 | { | |
0550cfe8 KS |
2093 | struct security_hook_list *hp; |
2094 | int rc; | |
2095 | ||
2096 | /* | |
2097 | * Currently, only one LSM can implement secid_to_secctx (i.e this | |
2098 | * LSM hook is not "stackable"). | |
2099 | */ | |
2100 | hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) { | |
2101 | rc = hp->hook.secid_to_secctx(secid, secdata, seclen); | |
2102 | if (rc != LSM_RET_DEFAULT(secid_to_secctx)) | |
2103 | return rc; | |
2104 | } | |
2105 | ||
2106 | return LSM_RET_DEFAULT(secid_to_secctx); | |
20510f2f JM |
2107 | } |
2108 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2109 | ||
7bf570dc | 2110 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 2111 | { |
b1d9e6b0 | 2112 | *secid = 0; |
f25fce3e | 2113 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
2114 | } |
2115 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2116 | ||
20510f2f JM |
2117 | void security_release_secctx(char *secdata, u32 seclen) |
2118 | { | |
f25fce3e | 2119 | call_void_hook(release_secctx, secdata, seclen); |
20510f2f JM |
2120 | } |
2121 | EXPORT_SYMBOL(security_release_secctx); | |
2122 | ||
6f3be9f5 AG |
2123 | void security_inode_invalidate_secctx(struct inode *inode) |
2124 | { | |
2125 | call_void_hook(inode_invalidate_secctx, inode); | |
2126 | } | |
2127 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2128 | ||
1ee65e37 DQ |
2129 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2130 | { | |
f25fce3e | 2131 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2132 | } |
2133 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2134 | ||
2135 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2136 | { | |
f25fce3e | 2137 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2138 | } |
2139 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2140 | ||
2141 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
2142 | { | |
b1d9e6b0 | 2143 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
2144 | } |
2145 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2146 | ||
344fa64e DH |
2147 | #ifdef CONFIG_WATCH_QUEUE |
2148 | int security_post_notification(const struct cred *w_cred, | |
2149 | const struct cred *cred, | |
2150 | struct watch_notification *n) | |
2151 | { | |
2152 | return call_int_hook(post_notification, 0, w_cred, cred, n); | |
2153 | } | |
2154 | #endif /* CONFIG_WATCH_QUEUE */ | |
2155 | ||
998f5040 DH |
2156 | #ifdef CONFIG_KEY_NOTIFICATIONS |
2157 | int security_watch_key(struct key *key) | |
2158 | { | |
2159 | return call_int_hook(watch_key, 0, key); | |
2160 | } | |
2161 | #endif | |
2162 | ||
20510f2f JM |
2163 | #ifdef CONFIG_SECURITY_NETWORK |
2164 | ||
3610cda5 | 2165 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2166 | { |
f25fce3e | 2167 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2168 | } |
2169 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2170 | ||
2171 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2172 | { | |
f25fce3e | 2173 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2174 | } |
2175 | EXPORT_SYMBOL(security_unix_may_send); | |
2176 | ||
2177 | int security_socket_create(int family, int type, int protocol, int kern) | |
2178 | { | |
f25fce3e | 2179 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2180 | } |
2181 | ||
2182 | int security_socket_post_create(struct socket *sock, int family, | |
2183 | int type, int protocol, int kern) | |
2184 | { | |
f25fce3e | 2185 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2186 | protocol, kern); |
2187 | } | |
2188 | ||
aae7cfcb DH |
2189 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
2190 | { | |
2191 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
2192 | } | |
2193 | EXPORT_SYMBOL(security_socket_socketpair); | |
2194 | ||
20510f2f JM |
2195 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
2196 | { | |
f25fce3e | 2197 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2198 | } |
2199 | ||
2200 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2201 | { | |
f25fce3e | 2202 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2203 | } |
2204 | ||
2205 | int security_socket_listen(struct socket *sock, int backlog) | |
2206 | { | |
f25fce3e | 2207 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2208 | } |
2209 | ||
2210 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2211 | { | |
f25fce3e | 2212 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2213 | } |
2214 | ||
20510f2f JM |
2215 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2216 | { | |
f25fce3e | 2217 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2218 | } |
2219 | ||
2220 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2221 | int size, int flags) | |
2222 | { | |
f25fce3e | 2223 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2224 | } |
2225 | ||
2226 | int security_socket_getsockname(struct socket *sock) | |
2227 | { | |
f25fce3e | 2228 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2229 | } |
2230 | ||
2231 | int security_socket_getpeername(struct socket *sock) | |
2232 | { | |
f25fce3e | 2233 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2234 | } |
2235 | ||
2236 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2237 | { | |
f25fce3e | 2238 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2239 | } |
2240 | ||
2241 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2242 | { | |
f25fce3e | 2243 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2244 | } |
2245 | ||
2246 | int security_socket_shutdown(struct socket *sock, int how) | |
2247 | { | |
f25fce3e | 2248 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2249 | } |
2250 | ||
2251 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2252 | { | |
f25fce3e | 2253 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2254 | } |
2255 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2256 | ||
2257 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2258 | int __user *optlen, unsigned len) | |
2259 | { | |
b1d9e6b0 CS |
2260 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
2261 | optval, optlen, len); | |
20510f2f JM |
2262 | } |
2263 | ||
2264 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
2265 | { | |
e308fd3b JB |
2266 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
2267 | skb, secid); | |
20510f2f JM |
2268 | } |
2269 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2270 | ||
2271 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2272 | { | |
f25fce3e | 2273 | return call_int_hook(sk_alloc_security, 0, sk, family, priority); |
20510f2f JM |
2274 | } |
2275 | ||
2276 | void security_sk_free(struct sock *sk) | |
2277 | { | |
f25fce3e | 2278 | call_void_hook(sk_free_security, sk); |
20510f2f JM |
2279 | } |
2280 | ||
2281 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2282 | { | |
f25fce3e | 2283 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2284 | } |
6230c9b4 | 2285 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f | 2286 | |
3df98d79 | 2287 | void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic) |
20510f2f | 2288 | { |
3df98d79 | 2289 | call_void_hook(sk_getsecid, sk, &flic->flowic_secid); |
20510f2f JM |
2290 | } |
2291 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2292 | ||
3df98d79 PM |
2293 | void security_req_classify_flow(const struct request_sock *req, |
2294 | struct flowi_common *flic) | |
20510f2f | 2295 | { |
3df98d79 | 2296 | call_void_hook(req_classify_flow, req, flic); |
20510f2f JM |
2297 | } |
2298 | EXPORT_SYMBOL(security_req_classify_flow); | |
2299 | ||
2300 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2301 | { | |
f25fce3e | 2302 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2303 | } |
2304 | EXPORT_SYMBOL(security_sock_graft); | |
2305 | ||
41dd9596 | 2306 | int security_inet_conn_request(const struct sock *sk, |
20510f2f JM |
2307 | struct sk_buff *skb, struct request_sock *req) |
2308 | { | |
f25fce3e | 2309 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2310 | } |
2311 | EXPORT_SYMBOL(security_inet_conn_request); | |
2312 | ||
2313 | void security_inet_csk_clone(struct sock *newsk, | |
2314 | const struct request_sock *req) | |
2315 | { | |
f25fce3e | 2316 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2317 | } |
2318 | ||
2319 | void security_inet_conn_established(struct sock *sk, | |
2320 | struct sk_buff *skb) | |
2321 | { | |
f25fce3e | 2322 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2323 | } |
72e89f50 | 2324 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2325 | |
2606fd1f EP |
2326 | int security_secmark_relabel_packet(u32 secid) |
2327 | { | |
f25fce3e | 2328 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2329 | } |
2330 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2331 | ||
2332 | void security_secmark_refcount_inc(void) | |
2333 | { | |
f25fce3e | 2334 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2335 | } |
2336 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2337 | ||
2338 | void security_secmark_refcount_dec(void) | |
2339 | { | |
f25fce3e | 2340 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2341 | } |
2342 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2343 | ||
5dbbaf2d PM |
2344 | int security_tun_dev_alloc_security(void **security) |
2345 | { | |
f25fce3e | 2346 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2347 | } |
2348 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2349 | ||
2350 | void security_tun_dev_free_security(void *security) | |
2351 | { | |
f25fce3e | 2352 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2353 | } |
2354 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2355 | ||
2b980dbd PM |
2356 | int security_tun_dev_create(void) |
2357 | { | |
f25fce3e | 2358 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2359 | } |
2360 | EXPORT_SYMBOL(security_tun_dev_create); | |
2361 | ||
5dbbaf2d | 2362 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2363 | { |
f25fce3e | 2364 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2365 | } |
5dbbaf2d | 2366 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2367 | |
5dbbaf2d | 2368 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2369 | { |
f25fce3e | 2370 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2371 | } |
2372 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2373 | ||
5dbbaf2d PM |
2374 | int security_tun_dev_open(void *security) |
2375 | { | |
f25fce3e | 2376 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2377 | } |
2378 | EXPORT_SYMBOL(security_tun_dev_open); | |
2379 | ||
c081d53f | 2380 | int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb) |
72e89f50 | 2381 | { |
c081d53f | 2382 | return call_int_hook(sctp_assoc_request, 0, asoc, skb); |
72e89f50 RH |
2383 | } |
2384 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2385 | ||
2386 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2387 | struct sockaddr *address, int addrlen) | |
2388 | { | |
2389 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2390 | address, addrlen); | |
2391 | } | |
2392 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2393 | ||
c081d53f | 2394 | void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, |
72e89f50 RH |
2395 | struct sock *newsk) |
2396 | { | |
c081d53f | 2397 | call_void_hook(sctp_sk_clone, asoc, sk, newsk); |
72e89f50 RH |
2398 | } |
2399 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2400 | ||
5e50f5d4 OM |
2401 | int security_sctp_assoc_established(struct sctp_association *asoc, |
2402 | struct sk_buff *skb) | |
2403 | { | |
2404 | return call_int_hook(sctp_assoc_established, 0, asoc, skb); | |
2405 | } | |
2406 | EXPORT_SYMBOL(security_sctp_assoc_established); | |
2407 | ||
20510f2f JM |
2408 | #endif /* CONFIG_SECURITY_NETWORK */ |
2409 | ||
d291f1a6 DJ |
2410 | #ifdef CONFIG_SECURITY_INFINIBAND |
2411 | ||
2412 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2413 | { | |
2414 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2415 | } | |
2416 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2417 | ||
47a2b338 DJ |
2418 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2419 | { | |
2420 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2421 | } | |
2422 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2423 | ||
d291f1a6 DJ |
2424 | int security_ib_alloc_security(void **sec) |
2425 | { | |
2426 | return call_int_hook(ib_alloc_security, 0, sec); | |
2427 | } | |
2428 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2429 | ||
2430 | void security_ib_free_security(void *sec) | |
2431 | { | |
2432 | call_void_hook(ib_free_security, sec); | |
2433 | } | |
2434 | EXPORT_SYMBOL(security_ib_free_security); | |
2435 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2436 | ||
20510f2f JM |
2437 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2438 | ||
52a4c640 NA |
2439 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2440 | struct xfrm_user_sec_ctx *sec_ctx, | |
2441 | gfp_t gfp) | |
20510f2f | 2442 | { |
f25fce3e | 2443 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2444 | } |
2445 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2446 | ||
03e1ad7b PM |
2447 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2448 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2449 | { |
f25fce3e | 2450 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2451 | } |
2452 | ||
03e1ad7b | 2453 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2454 | { |
f25fce3e | 2455 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2456 | } |
2457 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2458 | ||
03e1ad7b | 2459 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2460 | { |
f25fce3e | 2461 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2462 | } |
2463 | ||
2e5aa866 PM |
2464 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2465 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2466 | { |
f25fce3e | 2467 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2468 | } |
2469 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2470 | ||
2471 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2472 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2473 | { | |
f25fce3e | 2474 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2475 | } |
2476 | ||
2477 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2478 | { | |
f25fce3e | 2479 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2480 | } |
2481 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2482 | ||
2483 | void security_xfrm_state_free(struct xfrm_state *x) | |
2484 | { | |
f25fce3e | 2485 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2486 | } |
2487 | ||
8a922805 | 2488 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) |
20510f2f | 2489 | { |
8a922805 | 2490 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid); |
20510f2f JM |
2491 | } |
2492 | ||
2493 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 | 2494 | struct xfrm_policy *xp, |
3df98d79 | 2495 | const struct flowi_common *flic) |
20510f2f | 2496 | { |
b1d9e6b0 | 2497 | struct security_hook_list *hp; |
98e828a0 | 2498 | int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match); |
b1d9e6b0 CS |
2499 | |
2500 | /* | |
2501 | * Since this function is expected to return 0 or 1, the judgment | |
2502 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2503 | * we can use the first LSM's judgment because currently only SELinux | |
2504 | * supplies this call. | |
2505 | * | |
2506 | * For speed optimization, we explicitly break the loop rather than | |
2507 | * using the macro | |
2508 | */ | |
df0ce173 | 2509 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 | 2510 | list) { |
3df98d79 | 2511 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic); |
b1d9e6b0 CS |
2512 | break; |
2513 | } | |
2514 | return rc; | |
20510f2f JM |
2515 | } |
2516 | ||
2517 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2518 | { | |
f25fce3e | 2519 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2520 | } |
2521 | ||
3df98d79 | 2522 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic) |
20510f2f | 2523 | { |
3df98d79 | 2524 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid, |
f25fce3e | 2525 | 0); |
20510f2f JM |
2526 | |
2527 | BUG_ON(rc); | |
2528 | } | |
2529 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2530 | ||
2531 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2532 | ||
2533 | #ifdef CONFIG_KEYS | |
2534 | ||
d84f4f99 DH |
2535 | int security_key_alloc(struct key *key, const struct cred *cred, |
2536 | unsigned long flags) | |
20510f2f | 2537 | { |
f25fce3e | 2538 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2539 | } |
2540 | ||
2541 | void security_key_free(struct key *key) | |
2542 | { | |
f25fce3e | 2543 | call_void_hook(key_free, key); |
20510f2f JM |
2544 | } |
2545 | ||
8c0637e9 DH |
2546 | int security_key_permission(key_ref_t key_ref, const struct cred *cred, |
2547 | enum key_need_perm need_perm) | |
20510f2f | 2548 | { |
8c0637e9 | 2549 | return call_int_hook(key_permission, 0, key_ref, cred, need_perm); |
20510f2f JM |
2550 | } |
2551 | ||
70a5bb72 DH |
2552 | int security_key_getsecurity(struct key *key, char **_buffer) |
2553 | { | |
b1d9e6b0 | 2554 | *_buffer = NULL; |
f25fce3e | 2555 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2556 | } |
2557 | ||
20510f2f | 2558 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2559 | |
2560 | #ifdef CONFIG_AUDIT | |
2561 | ||
2562 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2563 | { | |
f25fce3e | 2564 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
03d37d25 AD |
2565 | } |
2566 | ||
2567 | int security_audit_rule_known(struct audit_krule *krule) | |
2568 | { | |
f25fce3e | 2569 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2570 | } |
2571 | ||
2572 | void security_audit_rule_free(void *lsmrule) | |
2573 | { | |
f25fce3e | 2574 | call_void_hook(audit_rule_free, lsmrule); |
03d37d25 AD |
2575 | } |
2576 | ||
90462a5b | 2577 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule) |
03d37d25 | 2578 | { |
90462a5b | 2579 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule); |
03d37d25 | 2580 | } |
b1d9e6b0 | 2581 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2582 | |
2583 | #ifdef CONFIG_BPF_SYSCALL | |
2584 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2585 | { | |
2586 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2587 | } | |
2588 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2589 | { | |
2590 | return call_int_hook(bpf_map, 0, map, fmode); | |
2591 | } | |
2592 | int security_bpf_prog(struct bpf_prog *prog) | |
2593 | { | |
2594 | return call_int_hook(bpf_prog, 0, prog); | |
2595 | } | |
2596 | int security_bpf_map_alloc(struct bpf_map *map) | |
2597 | { | |
2598 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2599 | } | |
2600 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2601 | { | |
2602 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2603 | } | |
2604 | void security_bpf_map_free(struct bpf_map *map) | |
2605 | { | |
2606 | call_void_hook(bpf_map_free_security, map); | |
2607 | } | |
2608 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2609 | { | |
2610 | call_void_hook(bpf_prog_free_security, aux); | |
2611 | } | |
2612 | #endif /* CONFIG_BPF_SYSCALL */ | |
9e47d31d MG |
2613 | |
2614 | int security_locked_down(enum lockdown_reason what) | |
2615 | { | |
2616 | return call_int_hook(locked_down, 0, what); | |
2617 | } | |
2618 | EXPORT_SYMBOL(security_locked_down); | |
da97e184 JFG |
2619 | |
2620 | #ifdef CONFIG_PERF_EVENTS | |
2621 | int security_perf_event_open(struct perf_event_attr *attr, int type) | |
2622 | { | |
2623 | return call_int_hook(perf_event_open, 0, attr, type); | |
2624 | } | |
2625 | ||
2626 | int security_perf_event_alloc(struct perf_event *event) | |
2627 | { | |
2628 | return call_int_hook(perf_event_alloc, 0, event); | |
2629 | } | |
2630 | ||
2631 | void security_perf_event_free(struct perf_event *event) | |
2632 | { | |
2633 | call_void_hook(perf_event_free, event); | |
2634 | } | |
2635 | ||
2636 | int security_perf_event_read(struct perf_event *event) | |
2637 | { | |
2638 | return call_int_hook(perf_event_read, 0, event); | |
2639 | } | |
2640 | ||
2641 | int security_perf_event_write(struct perf_event *event) | |
2642 | { | |
2643 | return call_int_hook(perf_event_write, 0, event); | |
2644 | } | |
2645 | #endif /* CONFIG_PERF_EVENTS */ | |
cdc1404a PM |
2646 | |
2647 | #ifdef CONFIG_IO_URING | |
2648 | int security_uring_override_creds(const struct cred *new) | |
2649 | { | |
2650 | return call_int_hook(uring_override_creds, 0, new); | |
2651 | } | |
2652 | ||
2653 | int security_uring_sqpoll(void) | |
2654 | { | |
2655 | return call_int_hook(uring_sqpoll, 0); | |
2656 | } | |
2657 | #endif /* CONFIG_IO_URING */ |