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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Security plug functions | |
4 | * | |
5 | * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> | |
6 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
7 | * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> | |
d291f1a6 | 8 | * Copyright (C) 2016 Mellanox Technologies |
1da177e4 LT |
9 | */ |
10 | ||
9b8c7c14 KC |
11 | #define pr_fmt(fmt) "LSM: " fmt |
12 | ||
afdb09c7 | 13 | #include <linux/bpf.h> |
c59ede7b | 14 | #include <linux/capability.h> |
d47be3df | 15 | #include <linux/dcache.h> |
876979c9 | 16 | #include <linux/export.h> |
1da177e4 LT |
17 | #include <linux/init.h> |
18 | #include <linux/kernel.h> | |
b89999d0 | 19 | #include <linux/kernel_read_file.h> |
3c4ed7bd | 20 | #include <linux/lsm_hooks.h> |
f381c272 | 21 | #include <linux/integrity.h> |
6c21a7fb | 22 | #include <linux/ima.h> |
3e1be52d | 23 | #include <linux/evm.h> |
40401530 | 24 | #include <linux/fsnotify.h> |
8b3ec681 AV |
25 | #include <linux/mman.h> |
26 | #include <linux/mount.h> | |
27 | #include <linux/personality.h> | |
75331a59 | 28 | #include <linux/backing-dev.h> |
3bb857e4 | 29 | #include <linux/string.h> |
ecd5f82e | 30 | #include <linux/msg.h> |
40401530 | 31 | #include <net/flow.h> |
12ddb08a | 32 | #include <net/sock.h> |
1da177e4 | 33 | |
823eb1cc | 34 | #define MAX_LSM_EVM_XATTR 2 |
1da177e4 | 35 | |
2d4d5119 KC |
36 | /* How many LSMs were built into the kernel? */ |
37 | #define LSM_COUNT (__end_lsm_info - __start_lsm_info) | |
38 | ||
59438b46 SS |
39 | /* |
40 | * These are descriptions of the reasons that can be passed to the | |
41 | * security_locked_down() LSM hook. Placing this array here allows | |
42 | * all security modules to use the same descriptions for auditing | |
43 | * purposes. | |
44 | */ | |
45 | const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = { | |
46 | [LOCKDOWN_NONE] = "none", | |
47 | [LOCKDOWN_MODULE_SIGNATURE] = "unsigned module loading", | |
48 | [LOCKDOWN_DEV_MEM] = "/dev/mem,kmem,port", | |
49 | [LOCKDOWN_EFI_TEST] = "/dev/efi_test access", | |
50 | [LOCKDOWN_KEXEC] = "kexec of unsigned images", | |
51 | [LOCKDOWN_HIBERNATION] = "hibernation", | |
52 | [LOCKDOWN_PCI_ACCESS] = "direct PCI access", | |
53 | [LOCKDOWN_IOPORT] = "raw io port access", | |
54 | [LOCKDOWN_MSR] = "raw MSR access", | |
55 | [LOCKDOWN_ACPI_TABLES] = "modifying ACPI tables", | |
56 | [LOCKDOWN_PCMCIA_CIS] = "direct PCMCIA CIS storage", | |
57 | [LOCKDOWN_TIOCSSERIAL] = "reconfiguration of serial port IO", | |
58 | [LOCKDOWN_MODULE_PARAMETERS] = "unsafe module parameters", | |
59 | [LOCKDOWN_MMIOTRACE] = "unsafe mmio", | |
60 | [LOCKDOWN_DEBUGFS] = "debugfs access", | |
61 | [LOCKDOWN_XMON_WR] = "xmon write access", | |
51e1bb9e | 62 | [LOCKDOWN_BPF_WRITE_USER] = "use of bpf to write user RAM", |
11a6af59 | 63 | [LOCKDOWN_KGDB] = "KDB or KGDB access", |
59438b46 SS |
64 | [LOCKDOWN_INTEGRITY_MAX] = "integrity", |
65 | [LOCKDOWN_KCORE] = "/proc/kcore access", | |
66 | [LOCKDOWN_KPROBES] = "use of kprobes", | |
71330842 | 67 | [LOCKDOWN_BPF_READ_KERNEL] = "use of bpf 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; |
6afcff0a CS |
82 | |
83 | /* | |
84 | * The task blob includes the "display" slot used for | |
85 | * chosing which module presents contexts. | |
86 | */ | |
87 | static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init = { | |
88 | .lbs_task = sizeof(int), | |
89 | }; | |
bbd3662a | 90 | |
076c54c5 | 91 | /* Boot-time LSM user choice */ |
79f7865d | 92 | static __initdata const char *chosen_lsm_order; |
5ef4e419 | 93 | static __initdata const char *chosen_major_lsm; |
1da177e4 | 94 | |
13e735c0 KC |
95 | static __initconst const char * const builtin_lsm_order = CONFIG_LSM; |
96 | ||
2d4d5119 KC |
97 | /* Ordered list of LSMs to initialize. */ |
98 | static __initdata struct lsm_info **ordered_lsms; | |
14bd99c8 | 99 | static __initdata struct lsm_info *exclusive; |
2d4d5119 | 100 | |
9b8c7c14 KC |
101 | static __initdata bool debug; |
102 | #define init_debug(...) \ | |
103 | do { \ | |
104 | if (debug) \ | |
105 | pr_info(__VA_ARGS__); \ | |
106 | } while (0) | |
107 | ||
f4941d75 KC |
108 | static bool __init is_enabled(struct lsm_info *lsm) |
109 | { | |
a8027fb0 KC |
110 | if (!lsm->enabled) |
111 | return false; | |
f4941d75 | 112 | |
a8027fb0 | 113 | return *lsm->enabled; |
f4941d75 KC |
114 | } |
115 | ||
116 | /* Mark an LSM's enabled flag. */ | |
117 | static int lsm_enabled_true __initdata = 1; | |
118 | static int lsm_enabled_false __initdata = 0; | |
119 | static void __init set_enabled(struct lsm_info *lsm, bool enabled) | |
120 | { | |
121 | /* | |
122 | * When an LSM hasn't configured an enable variable, we can use | |
123 | * a hard-coded location for storing the default enabled state. | |
124 | */ | |
125 | if (!lsm->enabled) { | |
126 | if (enabled) | |
127 | lsm->enabled = &lsm_enabled_true; | |
128 | else | |
129 | lsm->enabled = &lsm_enabled_false; | |
130 | } else if (lsm->enabled == &lsm_enabled_true) { | |
131 | if (!enabled) | |
132 | lsm->enabled = &lsm_enabled_false; | |
133 | } else if (lsm->enabled == &lsm_enabled_false) { | |
134 | if (enabled) | |
135 | lsm->enabled = &lsm_enabled_true; | |
136 | } else { | |
137 | *lsm->enabled = enabled; | |
138 | } | |
139 | } | |
140 | ||
2d4d5119 KC |
141 | /* Is an LSM already listed in the ordered LSMs list? */ |
142 | static bool __init exists_ordered_lsm(struct lsm_info *lsm) | |
143 | { | |
144 | struct lsm_info **check; | |
145 | ||
146 | for (check = ordered_lsms; *check; check++) | |
147 | if (*check == lsm) | |
148 | return true; | |
149 | ||
150 | return false; | |
151 | } | |
152 | ||
153 | /* Append an LSM to the list of ordered LSMs to initialize. */ | |
154 | static int last_lsm __initdata; | |
155 | static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from) | |
156 | { | |
157 | /* Ignore duplicate selections. */ | |
158 | if (exists_ordered_lsm(lsm)) | |
159 | return; | |
160 | ||
161 | if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from)) | |
162 | return; | |
163 | ||
a8027fb0 KC |
164 | /* Enable this LSM, if it is not already set. */ |
165 | if (!lsm->enabled) | |
166 | lsm->enabled = &lsm_enabled_true; | |
2d4d5119 | 167 | ordered_lsms[last_lsm++] = lsm; |
a8027fb0 | 168 | |
2d4d5119 KC |
169 | init_debug("%s ordering: %s (%sabled)\n", from, lsm->name, |
170 | is_enabled(lsm) ? "en" : "dis"); | |
171 | } | |
172 | ||
f4941d75 KC |
173 | /* Is an LSM allowed to be initialized? */ |
174 | static bool __init lsm_allowed(struct lsm_info *lsm) | |
175 | { | |
176 | /* Skip if the LSM is disabled. */ | |
177 | if (!is_enabled(lsm)) | |
178 | return false; | |
179 | ||
14bd99c8 KC |
180 | /* Not allowed if another exclusive LSM already initialized. */ |
181 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) { | |
182 | init_debug("exclusive disabled: %s\n", lsm->name); | |
183 | return false; | |
184 | } | |
185 | ||
f4941d75 KC |
186 | return true; |
187 | } | |
188 | ||
bbd3662a CS |
189 | static void __init lsm_set_blob_size(int *need, int *lbs) |
190 | { | |
191 | int offset; | |
192 | ||
193 | if (*need > 0) { | |
194 | offset = *lbs; | |
195 | *lbs += *need; | |
196 | *need = offset; | |
197 | } | |
198 | } | |
199 | ||
200 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
201 | { | |
202 | if (!needed) | |
203 | return; | |
204 | ||
205 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 206 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
207 | /* |
208 | * The inode blob gets an rcu_head in addition to | |
209 | * what the modules might need. | |
210 | */ | |
211 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
212 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
213 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
214 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
215 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
1aea7808 | 216 | lsm_set_blob_size(&needed->lbs_superblock, &blob_sizes.lbs_superblock); |
12ddb08a | 217 | lsm_set_blob_size(&needed->lbs_sock, &blob_sizes.lbs_sock); |
f4ad8f2c | 218 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
219 | } |
220 | ||
d8e9bbd4 KC |
221 | /* Prepare LSM for initialization. */ |
222 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
223 | { |
224 | int enabled = lsm_allowed(lsm); | |
225 | ||
226 | /* Record enablement (to handle any following exclusive LSMs). */ | |
227 | set_enabled(lsm, enabled); | |
228 | ||
d8e9bbd4 | 229 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 230 | if (enabled) { |
14bd99c8 KC |
231 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
232 | exclusive = lsm; | |
233 | init_debug("exclusive chosen: %s\n", lsm->name); | |
234 | } | |
bbd3662a CS |
235 | |
236 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
237 | } |
238 | } | |
239 | ||
240 | /* Initialize a given LSM, if it is enabled. */ | |
241 | static void __init initialize_lsm(struct lsm_info *lsm) | |
242 | { | |
243 | if (is_enabled(lsm)) { | |
244 | int ret; | |
14bd99c8 | 245 | |
f4941d75 KC |
246 | init_debug("initializing %s\n", lsm->name); |
247 | ret = lsm->init(); | |
248 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
249 | } | |
250 | } | |
251 | ||
13e735c0 | 252 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 253 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
254 | { |
255 | struct lsm_info *lsm; | |
13e735c0 KC |
256 | char *sep, *name, *next; |
257 | ||
e2bc445b KC |
258 | /* LSM_ORDER_FIRST is always first. */ |
259 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
260 | if (lsm->order == LSM_ORDER_FIRST) | |
261 | append_ordered_lsm(lsm, "first"); | |
262 | } | |
263 | ||
7e611486 | 264 | /* Process "security=", if given. */ |
7e611486 KC |
265 | if (chosen_major_lsm) { |
266 | struct lsm_info *major; | |
267 | ||
268 | /* | |
269 | * To match the original "security=" behavior, this | |
270 | * explicitly does NOT fallback to another Legacy Major | |
271 | * if the selected one was separately disabled: disable | |
272 | * all non-matching Legacy Major LSMs. | |
273 | */ | |
274 | for (major = __start_lsm_info; major < __end_lsm_info; | |
275 | major++) { | |
276 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
277 | strcmp(major->name, chosen_major_lsm) != 0) { | |
278 | set_enabled(major, false); | |
279 | init_debug("security=%s disabled: %s\n", | |
280 | chosen_major_lsm, major->name); | |
281 | } | |
282 | } | |
283 | } | |
5ef4e419 | 284 | |
13e735c0 KC |
285 | sep = kstrdup(order, GFP_KERNEL); |
286 | next = sep; | |
287 | /* Walk the list, looking for matching LSMs. */ | |
288 | while ((name = strsep(&next, ",")) != NULL) { | |
289 | bool found = false; | |
290 | ||
291 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
292 | if (lsm->order == LSM_ORDER_MUTABLE && |
293 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
294 | append_ordered_lsm(lsm, origin); |
295 | found = true; | |
296 | } | |
297 | } | |
298 | ||
299 | if (!found) | |
300 | init_debug("%s ignored: %s\n", origin, name); | |
657d910b | 301 | } |
c91d8106 CS |
302 | |
303 | /* Process "security=", if given. */ | |
304 | if (chosen_major_lsm) { | |
305 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
306 | if (exists_ordered_lsm(lsm)) | |
307 | continue; | |
308 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
309 | append_ordered_lsm(lsm, "security="); | |
310 | } | |
311 | } | |
312 | ||
313 | /* Disable all LSMs not in the ordered list. */ | |
314 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
315 | if (exists_ordered_lsm(lsm)) | |
316 | continue; | |
317 | set_enabled(lsm, false); | |
318 | init_debug("%s disabled: %s\n", origin, lsm->name); | |
319 | } | |
320 | ||
13e735c0 | 321 | kfree(sep); |
657d910b KC |
322 | } |
323 | ||
1cfb2a51 TH |
324 | static void __init lsm_early_cred(struct cred *cred); |
325 | static void __init lsm_early_task(struct task_struct *task); | |
326 | ||
e6b1db98 MG |
327 | static int lsm_append(const char *new, char **result); |
328 | ||
2d4d5119 KC |
329 | static void __init ordered_lsm_init(void) |
330 | { | |
331 | struct lsm_info **lsm; | |
332 | ||
333 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
334 | GFP_KERNEL); | |
335 | ||
89a9684e KC |
336 | if (chosen_lsm_order) { |
337 | if (chosen_major_lsm) { | |
338 | pr_info("security= is ignored because it is superseded by lsm=\n"); | |
339 | chosen_major_lsm = NULL; | |
340 | } | |
79f7865d | 341 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 342 | } else |
79f7865d | 343 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
344 | |
345 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
346 | prepare_lsm(*lsm); |
347 | ||
1aea7808 CS |
348 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
349 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); | |
350 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); | |
351 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); | |
352 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
353 | init_debug("superblock blob size = %d\n", blob_sizes.lbs_superblock); | |
12ddb08a | 354 | init_debug("sock blob size = %d\n", blob_sizes.lbs_sock); |
1aea7808 | 355 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); |
f17b27a2 | 356 | init_debug("lsmblob size = %zu\n", sizeof(struct lsmblob)); |
33bf60ca CS |
357 | |
358 | /* | |
359 | * Create any kmem_caches needed for blobs | |
360 | */ | |
361 | if (blob_sizes.lbs_file) | |
362 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
363 | blob_sizes.lbs_file, 0, | |
364 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
365 | if (blob_sizes.lbs_inode) |
366 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
367 | blob_sizes.lbs_inode, 0, | |
368 | SLAB_PANIC, NULL); | |
bbd3662a | 369 | |
1cfb2a51 TH |
370 | lsm_early_cred((struct cred *) current->cred); |
371 | lsm_early_task(current); | |
d8e9bbd4 KC |
372 | for (lsm = ordered_lsms; *lsm; lsm++) |
373 | initialize_lsm(*lsm); | |
2d4d5119 KC |
374 | |
375 | kfree(ordered_lsms); | |
376 | } | |
377 | ||
e6b1db98 MG |
378 | int __init early_security_init(void) |
379 | { | |
380 | int i; | |
381 | struct hlist_head *list = (struct hlist_head *) &security_hook_heads; | |
382 | struct lsm_info *lsm; | |
383 | ||
384 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head); | |
385 | i++) | |
386 | INIT_HLIST_HEAD(&list[i]); | |
387 | ||
388 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
389 | if (!lsm->enabled) | |
390 | lsm->enabled = &lsm_enabled_true; | |
391 | prepare_lsm(lsm); | |
392 | initialize_lsm(lsm); | |
393 | } | |
394 | ||
395 | return 0; | |
396 | } | |
397 | ||
1da177e4 LT |
398 | /** |
399 | * security_init - initializes the security framework | |
400 | * | |
401 | * This should be called early in the kernel initialization sequence. | |
402 | */ | |
403 | int __init security_init(void) | |
404 | { | |
e6b1db98 | 405 | struct lsm_info *lsm; |
3dfc9b02 | 406 | |
98d29170 KC |
407 | pr_info("Security Framework initializing\n"); |
408 | ||
e6b1db98 MG |
409 | /* |
410 | * Append the names of the early LSM modules now that kmalloc() is | |
411 | * available | |
412 | */ | |
413 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
414 | if (lsm->enabled) | |
415 | lsm_append(lsm->name, &lsm_names); | |
416 | } | |
1da177e4 | 417 | |
657d910b KC |
418 | /* Load LSMs in specified order. */ |
419 | ordered_lsm_init(); | |
420 | ||
1da177e4 LT |
421 | return 0; |
422 | } | |
423 | ||
076c54c5 | 424 | /* Save user chosen LSM */ |
5ef4e419 | 425 | static int __init choose_major_lsm(char *str) |
076c54c5 | 426 | { |
5ef4e419 | 427 | chosen_major_lsm = str; |
076c54c5 AD |
428 | return 1; |
429 | } | |
5ef4e419 | 430 | __setup("security=", choose_major_lsm); |
076c54c5 | 431 | |
79f7865d KC |
432 | /* Explicitly choose LSM initialization order. */ |
433 | static int __init choose_lsm_order(char *str) | |
434 | { | |
435 | chosen_lsm_order = str; | |
436 | return 1; | |
437 | } | |
438 | __setup("lsm=", choose_lsm_order); | |
439 | ||
9b8c7c14 KC |
440 | /* Enable LSM order debugging. */ |
441 | static int __init enable_debug(char *str) | |
442 | { | |
443 | debug = true; | |
444 | return 1; | |
445 | } | |
446 | __setup("lsm.debug", enable_debug); | |
447 | ||
3bb857e4 MS |
448 | static bool match_last_lsm(const char *list, const char *lsm) |
449 | { | |
450 | const char *last; | |
451 | ||
452 | if (WARN_ON(!list || !lsm)) | |
453 | return false; | |
454 | last = strrchr(list, ','); | |
455 | if (last) | |
456 | /* Pass the comma, strcmp() will check for '\0' */ | |
457 | last++; | |
458 | else | |
459 | last = list; | |
460 | return !strcmp(last, lsm); | |
461 | } | |
462 | ||
e6b1db98 | 463 | static int lsm_append(const char *new, char **result) |
d69dece5 CS |
464 | { |
465 | char *cp; | |
466 | ||
467 | if (*result == NULL) { | |
468 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
469 | if (*result == NULL) |
470 | return -ENOMEM; | |
d69dece5 | 471 | } else { |
3bb857e4 MS |
472 | /* Check if it is the last registered name */ |
473 | if (match_last_lsm(*result, new)) | |
474 | return 0; | |
d69dece5 CS |
475 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
476 | if (cp == NULL) | |
477 | return -ENOMEM; | |
478 | kfree(*result); | |
479 | *result = cp; | |
480 | } | |
481 | return 0; | |
482 | } | |
483 | ||
f17b27a2 CS |
484 | /* |
485 | * Current index to use while initializing the lsmblob secid list. | |
6afcff0a | 486 | * Pointers to the LSM id structures for local use. |
f17b27a2 CS |
487 | */ |
488 | static int lsm_slot __lsm_ro_after_init; | |
85ff5379 CS |
489 | static struct lsm_id *lsm_slotlist[LSMBLOB_ENTRIES] __lsm_ro_after_init; |
490 | ||
491 | /** | |
492 | * security_lsm_slot_name - Get the name of the security module in a slot | |
493 | * @slot: index into the "display" slot list. | |
494 | * | |
495 | * Provide the name of the security module associated with | |
496 | * a display slot. | |
497 | * | |
498 | * If @slot is LSMBLOB_INVALID return the value | |
499 | * for slot 0 if it has been set, otherwise NULL. | |
500 | * | |
501 | * Returns a pointer to the name string or NULL. | |
502 | */ | |
503 | const char *security_lsm_slot_name(int slot) | |
504 | { | |
505 | if (slot == LSMBLOB_INVALID) | |
506 | slot = 0; | |
507 | else if (slot >= LSMBLOB_ENTRIES || slot < 0) | |
508 | return NULL; | |
509 | ||
510 | if (lsm_slotlist[slot] == NULL) | |
511 | return NULL; | |
512 | return lsm_slotlist[slot]->lsm; | |
513 | } | |
f17b27a2 | 514 | |
d69dece5 CS |
515 | /** |
516 | * security_add_hooks - Add a modules hooks to the hook lists. | |
517 | * @hooks: the hooks to add | |
518 | * @count: the number of hooks to add | |
f17b27a2 | 519 | * @lsmid: the the identification information for the security module |
d69dece5 CS |
520 | * |
521 | * Each LSM has to register its hooks with the infrastructure. | |
f17b27a2 CS |
522 | * If the LSM is using hooks that export secids allocate a slot |
523 | * for it in the lsmblob. | |
d69dece5 CS |
524 | */ |
525 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
f17b27a2 | 526 | struct lsm_id *lsmid) |
d69dece5 CS |
527 | { |
528 | int i; | |
529 | ||
f17b27a2 CS |
530 | if (lsmid->slot == LSMBLOB_NEEDED) { |
531 | if (lsm_slot >= LSMBLOB_ENTRIES) | |
532 | panic("%s Too many LSMs registered.\n", __func__); | |
6afcff0a | 533 | lsm_slotlist[lsm_slot] = lsmid; |
f17b27a2 CS |
534 | lsmid->slot = lsm_slot++; |
535 | init_debug("%s assigned lsmblob slot %d\n", lsmid->lsm, | |
536 | lsmid->slot); | |
537 | } | |
538 | ||
d69dece5 | 539 | for (i = 0; i < count; i++) { |
f17b27a2 | 540 | hooks[i].lsmid = lsmid; |
df0ce173 | 541 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
d69dece5 | 542 | } |
e6b1db98 MG |
543 | |
544 | /* | |
545 | * Don't try to append during early_security_init(), we'll come back | |
546 | * and fix this up afterwards. | |
547 | */ | |
548 | if (slab_is_available()) { | |
f17b27a2 | 549 | if (lsm_append(lsmid->lsm, &lsm_names) < 0) |
e6b1db98 MG |
550 | panic("%s - Cannot get early memory.\n", __func__); |
551 | } | |
d69dece5 CS |
552 | } |
553 | ||
42df744c | 554 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 555 | { |
42df744c JK |
556 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
557 | event, data); | |
8f408ab6 | 558 | } |
42df744c | 559 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 560 | |
42df744c | 561 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 562 | { |
42df744c JK |
563 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
564 | nb); | |
8f408ab6 | 565 | } |
42df744c | 566 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 567 | |
42df744c | 568 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 569 | { |
42df744c JK |
570 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
571 | nb); | |
8f408ab6 | 572 | } |
42df744c | 573 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 574 | |
bbd3662a CS |
575 | /** |
576 | * lsm_cred_alloc - allocate a composite cred blob | |
577 | * @cred: the cred that needs a blob | |
578 | * @gfp: allocation type | |
579 | * | |
580 | * Allocate the cred blob for all the modules | |
581 | * | |
582 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
583 | */ | |
584 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
585 | { | |
586 | if (blob_sizes.lbs_cred == 0) { | |
587 | cred->security = NULL; | |
588 | return 0; | |
589 | } | |
590 | ||
591 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
592 | if (cred->security == NULL) | |
593 | return -ENOMEM; | |
594 | return 0; | |
595 | } | |
596 | ||
597 | /** | |
598 | * lsm_early_cred - during initialization allocate a composite cred blob | |
599 | * @cred: the cred that needs a blob | |
600 | * | |
1cfb2a51 | 601 | * Allocate the cred blob for all the modules |
bbd3662a | 602 | */ |
1cfb2a51 | 603 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 604 | { |
1cfb2a51 | 605 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 606 | |
bbd3662a CS |
607 | if (rc) |
608 | panic("%s: Early cred alloc failed.\n", __func__); | |
609 | } | |
610 | ||
33bf60ca CS |
611 | /** |
612 | * lsm_file_alloc - allocate a composite file blob | |
613 | * @file: the file that needs a blob | |
614 | * | |
615 | * Allocate the file blob for all the modules | |
616 | * | |
617 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
618 | */ | |
619 | static int lsm_file_alloc(struct file *file) | |
620 | { | |
621 | if (!lsm_file_cache) { | |
622 | file->f_security = NULL; | |
623 | return 0; | |
624 | } | |
625 | ||
626 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
627 | if (file->f_security == NULL) | |
628 | return -ENOMEM; | |
629 | return 0; | |
630 | } | |
631 | ||
afb1cbe3 CS |
632 | /** |
633 | * lsm_inode_alloc - allocate a composite inode blob | |
634 | * @inode: the inode that needs a blob | |
635 | * | |
636 | * Allocate the inode blob for all the modules | |
637 | * | |
638 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
639 | */ | |
640 | int lsm_inode_alloc(struct inode *inode) | |
641 | { | |
642 | if (!lsm_inode_cache) { | |
643 | inode->i_security = NULL; | |
644 | return 0; | |
645 | } | |
646 | ||
647 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
648 | if (inode->i_security == NULL) | |
649 | return -ENOMEM; | |
650 | return 0; | |
651 | } | |
652 | ||
f4ad8f2c CS |
653 | /** |
654 | * lsm_task_alloc - allocate a composite task blob | |
655 | * @task: the task that needs a blob | |
656 | * | |
657 | * Allocate the task blob for all the modules | |
658 | * | |
659 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
660 | */ | |
3e8c7367 | 661 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c | 662 | { |
6afcff0a CS |
663 | int *display; |
664 | ||
f4ad8f2c CS |
665 | if (blob_sizes.lbs_task == 0) { |
666 | task->security = NULL; | |
667 | return 0; | |
668 | } | |
669 | ||
670 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
671 | if (task->security == NULL) | |
672 | return -ENOMEM; | |
6afcff0a CS |
673 | |
674 | /* | |
675 | * The start of the task blob contains the "display" LSM slot number. | |
676 | * Start with it set to the invalid slot number, indicating that the | |
677 | * default first registered LSM be displayed. | |
678 | */ | |
679 | display = task->security; | |
680 | *display = LSMBLOB_INVALID; | |
681 | ||
f4ad8f2c CS |
682 | return 0; |
683 | } | |
684 | ||
ecd5f82e CS |
685 | /** |
686 | * lsm_ipc_alloc - allocate a composite ipc blob | |
687 | * @kip: the ipc that needs a blob | |
688 | * | |
689 | * Allocate the ipc blob for all the modules | |
690 | * | |
691 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
692 | */ | |
3e8c7367 | 693 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
694 | { |
695 | if (blob_sizes.lbs_ipc == 0) { | |
696 | kip->security = NULL; | |
697 | return 0; | |
698 | } | |
699 | ||
700 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
701 | if (kip->security == NULL) | |
702 | return -ENOMEM; | |
703 | return 0; | |
704 | } | |
705 | ||
706 | /** | |
707 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
708 | * @mp: the msg_msg that needs a blob | |
709 | * | |
710 | * Allocate the ipc blob for all the modules | |
711 | * | |
712 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
713 | */ | |
3e8c7367 | 714 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
715 | { |
716 | if (blob_sizes.lbs_msg_msg == 0) { | |
717 | mp->security = NULL; | |
718 | return 0; | |
719 | } | |
720 | ||
721 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
722 | if (mp->security == NULL) | |
723 | return -ENOMEM; | |
724 | return 0; | |
725 | } | |
726 | ||
12ddb08a CS |
727 | /** |
728 | * lsm_sock_alloc - allocate a composite sock blob | |
729 | * @sock: the sock that needs a blob | |
730 | * @priority: allocation mode | |
731 | * | |
732 | * Allocate the sock blob for all the modules | |
733 | * | |
734 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
735 | */ | |
736 | static int lsm_sock_alloc(struct sock *sock, gfp_t priority) | |
737 | { | |
738 | if (blob_sizes.lbs_sock == 0) { | |
739 | sock->sk_security = NULL; | |
740 | return 0; | |
741 | } | |
742 | ||
743 | sock->sk_security = kzalloc(blob_sizes.lbs_sock, priority); | |
744 | if (sock->sk_security == NULL) | |
745 | return -ENOMEM; | |
746 | return 0; | |
747 | } | |
748 | ||
f4ad8f2c CS |
749 | /** |
750 | * lsm_early_task - during initialization allocate a composite task blob | |
751 | * @task: the task that needs a blob | |
752 | * | |
1cfb2a51 | 753 | * Allocate the task blob for all the modules |
f4ad8f2c | 754 | */ |
1cfb2a51 | 755 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 756 | { |
1cfb2a51 | 757 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 758 | |
f4ad8f2c CS |
759 | if (rc) |
760 | panic("%s: Early task alloc failed.\n", __func__); | |
761 | } | |
762 | ||
58cb9520 CS |
763 | /** |
764 | * append_ctx - append a lsm/context pair to a compound context | |
765 | * @ctx: the existing compound context | |
766 | * @ctxlen: size of the old context, including terminating nul byte | |
767 | * @lsm: new lsm name, nul terminated | |
768 | * @new: new context, possibly nul terminated | |
769 | * @newlen: maximum size of @new | |
770 | * | |
771 | * replace @ctx with a new compound context, appending @newlsm and @new | |
772 | * to @ctx. On exit the new data replaces the old, which is freed. | |
773 | * @ctxlen is set to the new size, which includes a trailing nul byte. | |
774 | * | |
775 | * Returns 0 on success, -ENOMEM if no memory is available. | |
776 | */ | |
777 | static int append_ctx(char **ctx, int *ctxlen, const char *lsm, char *new, | |
778 | int newlen) | |
779 | { | |
780 | char *final; | |
781 | size_t llen; | |
782 | size_t nlen; | |
783 | size_t flen; | |
784 | ||
785 | llen = strlen(lsm) + 1; | |
786 | /* | |
787 | * A security module may or may not provide a trailing nul on | |
788 | * when returning a security context. There is no definition | |
789 | * of which it should be, and there are modules that do it | |
790 | * each way. | |
791 | */ | |
792 | nlen = strnlen(new, newlen); | |
793 | ||
794 | flen = *ctxlen + llen + nlen + 1; | |
795 | final = kzalloc(flen, GFP_KERNEL); | |
796 | ||
797 | if (final == NULL) | |
798 | return -ENOMEM; | |
799 | ||
800 | if (*ctxlen) | |
801 | memcpy(final, *ctx, *ctxlen); | |
802 | ||
803 | memcpy(final + *ctxlen, lsm, llen); | |
804 | memcpy(final + *ctxlen + llen, new, nlen); | |
805 | ||
806 | kfree(*ctx); | |
807 | ||
808 | *ctx = final; | |
809 | *ctxlen = flen; | |
810 | ||
811 | return 0; | |
812 | } | |
813 | ||
1aea7808 CS |
814 | /** |
815 | * lsm_superblock_alloc - allocate a composite superblock blob | |
816 | * @sb: the superblock that needs a blob | |
817 | * | |
818 | * Allocate the superblock blob for all the modules | |
819 | * | |
820 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
821 | */ | |
822 | static int lsm_superblock_alloc(struct super_block *sb) | |
823 | { | |
824 | if (blob_sizes.lbs_superblock == 0) { | |
825 | sb->s_security = NULL; | |
826 | return 0; | |
827 | } | |
828 | ||
829 | sb->s_security = kzalloc(blob_sizes.lbs_superblock, GFP_KERNEL); | |
830 | if (sb->s_security == NULL) | |
831 | return -ENOMEM; | |
832 | return 0; | |
833 | } | |
834 | ||
98e828a0 KS |
835 | /* |
836 | * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and | |
837 | * can be accessed with: | |
838 | * | |
839 | * LSM_RET_DEFAULT(<hook_name>) | |
840 | * | |
841 | * The macros below define static constants for the default value of each | |
842 | * LSM hook. | |
843 | */ | |
844 | #define LSM_RET_DEFAULT(NAME) (NAME##_default) | |
845 | #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME) | |
846 | #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \ | |
847 | static const int LSM_RET_DEFAULT(NAME) = (DEFAULT); | |
848 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ | |
849 | DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME) | |
850 | ||
851 | #include <linux/lsm_hook_defs.h> | |
852 | #undef LSM_HOOK | |
853 | ||
f25fce3e | 854 | /* |
b1d9e6b0 | 855 | * Hook list operation macros. |
1da177e4 | 856 | * |
f25fce3e CS |
857 | * call_void_hook: |
858 | * This is a hook that does not return a value. | |
1da177e4 | 859 | * |
f25fce3e CS |
860 | * call_int_hook: |
861 | * This is a hook that returns a value. | |
1da177e4 | 862 | */ |
1da177e4 | 863 | |
b1d9e6b0 CS |
864 | #define call_void_hook(FUNC, ...) \ |
865 | do { \ | |
866 | struct security_hook_list *P; \ | |
867 | \ | |
df0ce173 | 868 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
869 | P->hook.FUNC(__VA_ARGS__); \ |
870 | } while (0) | |
871 | ||
872 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
873 | int RC = IRC; \ | |
874 | do { \ | |
875 | struct security_hook_list *P; \ | |
876 | \ | |
df0ce173 | 877 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
878 | RC = P->hook.FUNC(__VA_ARGS__); \ |
879 | if (RC != 0) \ | |
880 | break; \ | |
881 | } \ | |
882 | } while (0); \ | |
883 | RC; \ | |
884 | }) | |
1da177e4 | 885 | |
20510f2f JM |
886 | /* Security operations */ |
887 | ||
c55515eb | 888 | int security_binder_set_context_mgr(const struct cred *mgr) |
79af7307 | 889 | { |
f25fce3e | 890 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 | 891 | } |
ebafbcf7 | 892 | EXPORT_SYMBOL(security_binder_set_context_mgr); |
79af7307 | 893 | |
004b6fd5 CS |
894 | /** |
895 | * security_binder_transaction - Binder driver transaction check | |
896 | * @from: source of the transaction | |
897 | * @to: destination of the transaction | |
898 | * | |
c55515eb | 899 | * Verify that the creds have the same LSM "display", then |
004b6fd5 CS |
900 | * call the security module hooks. |
901 | * | |
902 | * Returns -EINVAL if the displays don't match, or the | |
903 | * result of the security module checks. | |
904 | */ | |
c55515eb TK |
905 | int security_binder_transaction(const struct cred *from, |
906 | const struct cred *to) | |
79af7307 | 907 | { |
c55515eb TK |
908 | int from_display = lsm_cred_display(from); |
909 | int to_display = lsm_cred_display(to); | |
004b6fd5 CS |
910 | |
911 | /* | |
912 | * If the display is LSMBLOB_INVALID the first module that has | |
913 | * an entry is used. This will be in the 0 slot. | |
914 | * | |
915 | * This is currently only required if the server has requested | |
916 | * peer contexts, but it would be unwieldly to have too much of | |
917 | * the binder driver detail here. | |
918 | */ | |
919 | if (from_display == LSMBLOB_INVALID) | |
920 | from_display = 0; | |
921 | if (to_display == LSMBLOB_INVALID) | |
922 | to_display = 0; | |
923 | if (from_display != to_display) | |
924 | return -EINVAL; | |
925 | ||
f25fce3e | 926 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 | 927 | } |
ebafbcf7 | 928 | EXPORT_SYMBOL(security_binder_transaction); |
79af7307 | 929 | |
c55515eb TK |
930 | int security_binder_transfer_binder(const struct cred *from, |
931 | const struct cred *to) | |
79af7307 | 932 | { |
f25fce3e | 933 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 | 934 | } |
ebafbcf7 | 935 | EXPORT_SYMBOL(security_binder_transfer_binder); |
79af7307 | 936 | |
c55515eb TK |
937 | int security_binder_transfer_file(const struct cred *from, |
938 | const struct cred *to, struct file *file) | |
79af7307 | 939 | { |
f25fce3e | 940 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 | 941 | } |
ebafbcf7 | 942 | EXPORT_SYMBOL(security_binder_transfer_file); |
79af7307 | 943 | |
9e48858f | 944 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 945 | { |
f25fce3e | 946 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
947 | } |
948 | ||
949 | int security_ptrace_traceme(struct task_struct *parent) | |
950 | { | |
f25fce3e | 951 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
952 | } |
953 | ||
954 | int security_capget(struct task_struct *target, | |
955 | kernel_cap_t *effective, | |
956 | kernel_cap_t *inheritable, | |
957 | kernel_cap_t *permitted) | |
958 | { | |
f25fce3e CS |
959 | return call_int_hook(capget, 0, target, |
960 | effective, inheritable, permitted); | |
20510f2f JM |
961 | } |
962 | ||
d84f4f99 DH |
963 | int security_capset(struct cred *new, const struct cred *old, |
964 | const kernel_cap_t *effective, | |
965 | const kernel_cap_t *inheritable, | |
966 | const kernel_cap_t *permitted) | |
20510f2f | 967 | { |
f25fce3e CS |
968 | return call_int_hook(capset, 0, new, old, |
969 | effective, inheritable, permitted); | |
20510f2f JM |
970 | } |
971 | ||
c1a85a00 MM |
972 | int security_capable(const struct cred *cred, |
973 | struct user_namespace *ns, | |
974 | int cap, | |
975 | unsigned int opts) | |
20510f2f | 976 | { |
c1a85a00 | 977 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
978 | } |
979 | ||
20510f2f JM |
980 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
981 | { | |
f25fce3e | 982 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
983 | } |
984 | ||
985 | int security_quota_on(struct dentry *dentry) | |
986 | { | |
f25fce3e | 987 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
988 | } |
989 | ||
12b3052c | 990 | int security_syslog(int type) |
20510f2f | 991 | { |
f25fce3e | 992 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
993 | } |
994 | ||
457db29b | 995 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 996 | { |
f25fce3e | 997 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
998 | } |
999 | ||
20510f2f JM |
1000 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
1001 | { | |
b1d9e6b0 CS |
1002 | struct security_hook_list *hp; |
1003 | int cap_sys_admin = 1; | |
1004 | int rc; | |
1005 | ||
1006 | /* | |
1007 | * The module will respond with a positive value if | |
1008 | * it thinks the __vm_enough_memory() call should be | |
1009 | * made with the cap_sys_admin set. If all of the modules | |
1010 | * agree that it should be set it will. If any module | |
1011 | * thinks it should not be set it won't. | |
1012 | */ | |
df0ce173 | 1013 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
1014 | rc = hp->hook.vm_enough_memory(mm, pages); |
1015 | if (rc <= 0) { | |
1016 | cap_sys_admin = 0; | |
1017 | break; | |
1018 | } | |
1019 | } | |
1020 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
1021 | } |
1022 | ||
b8bff599 | 1023 | int security_bprm_creds_for_exec(struct linux_binprm *bprm) |
20510f2f | 1024 | { |
b8bff599 EB |
1025 | return call_int_hook(bprm_creds_for_exec, 0, bprm); |
1026 | } | |
1027 | ||
56305aa9 | 1028 | int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file) |
20510f2f | 1029 | { |
56305aa9 | 1030 | return call_int_hook(bprm_creds_from_file, 0, bprm, file); |
20510f2f JM |
1031 | } |
1032 | ||
a6f76f23 | 1033 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 1034 | { |
6c21a7fb MZ |
1035 | int ret; |
1036 | ||
f25fce3e | 1037 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
1038 | if (ret) |
1039 | return ret; | |
1040 | return ima_bprm_check(bprm); | |
20510f2f JM |
1041 | } |
1042 | ||
a6f76f23 | 1043 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 1044 | { |
f25fce3e | 1045 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
1046 | } |
1047 | ||
a6f76f23 | 1048 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 1049 | { |
f25fce3e | 1050 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
1051 | } |
1052 | ||
0b52075e AV |
1053 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
1054 | { | |
1055 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
1056 | } | |
1057 | ||
b0af8cdd CS |
1058 | int security_fs_context_parse_param(struct fs_context *fc, |
1059 | struct fs_parameter *param) | |
da2441fd | 1060 | { |
b0af8cdd CS |
1061 | struct security_hook_list *hp; |
1062 | int trc; | |
1063 | int rc = -ENOPARAM; | |
1064 | ||
1065 | hlist_for_each_entry(hp, &security_hook_heads.fs_context_parse_param, | |
1066 | list) { | |
1067 | trc = hp->hook.fs_context_parse_param(fc, param); | |
1068 | if (trc == 0) | |
1069 | rc = 0; | |
1070 | else if (trc != -ENOPARAM) | |
1071 | return trc; | |
1072 | } | |
1073 | return rc; | |
da2441fd DH |
1074 | } |
1075 | ||
20510f2f JM |
1076 | int security_sb_alloc(struct super_block *sb) |
1077 | { | |
1aea7808 CS |
1078 | int rc = lsm_superblock_alloc(sb); |
1079 | ||
1080 | if (unlikely(rc)) | |
1081 | return rc; | |
1082 | rc = call_int_hook(sb_alloc_security, 0, sb); | |
1083 | if (unlikely(rc)) | |
1084 | security_sb_free(sb); | |
1085 | return rc; | |
20510f2f JM |
1086 | } |
1087 | ||
83e804f0 MS |
1088 | void security_sb_delete(struct super_block *sb) |
1089 | { | |
1090 | call_void_hook(sb_delete, sb); | |
20510f2f JM |
1091 | } |
1092 | ||
1093 | void security_sb_free(struct super_block *sb) | |
1094 | { | |
f25fce3e | 1095 | call_void_hook(sb_free_security, sb); |
1aea7808 CS |
1096 | kfree(sb->s_security); |
1097 | sb->s_security = NULL; | |
20510f2f JM |
1098 | } |
1099 | ||
204cc0cc | 1100 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 1101 | { |
204cc0cc AV |
1102 | if (!*mnt_opts) |
1103 | return; | |
1104 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
1105 | *mnt_opts = NULL; | |
20510f2f | 1106 | } |
204cc0cc | 1107 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 1108 | |
204cc0cc | 1109 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 1110 | { |
204cc0cc | 1111 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 1112 | } |
f5c0c26d | 1113 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 1114 | |
69c4a42d OK |
1115 | int security_sb_mnt_opts_compat(struct super_block *sb, |
1116 | void *mnt_opts) | |
1117 | { | |
1118 | return call_int_hook(sb_mnt_opts_compat, 0, sb, mnt_opts); | |
1119 | } | |
1120 | EXPORT_SYMBOL(security_sb_mnt_opts_compat); | |
1121 | ||
c039bc3c | 1122 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 1123 | void *mnt_opts) |
20510f2f | 1124 | { |
204cc0cc | 1125 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 1126 | } |
a65001e8 | 1127 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 1128 | |
a10d7c22 | 1129 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 1130 | { |
a10d7c22 | 1131 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
1132 | } |
1133 | ||
2069f457 EP |
1134 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
1135 | { | |
f25fce3e | 1136 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
1137 | } |
1138 | ||
20510f2f JM |
1139 | int security_sb_statfs(struct dentry *dentry) |
1140 | { | |
f25fce3e | 1141 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
1142 | } |
1143 | ||
8a04c43b | 1144 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 1145 | const char *type, unsigned long flags, void *data) |
20510f2f | 1146 | { |
f25fce3e | 1147 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
1148 | } |
1149 | ||
20510f2f JM |
1150 | int security_sb_umount(struct vfsmount *mnt, int flags) |
1151 | { | |
f25fce3e | 1152 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
1153 | } |
1154 | ||
3b73b68c | 1155 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 1156 | { |
f25fce3e | 1157 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
1158 | } |
1159 | ||
c9180a57 | 1160 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 1161 | void *mnt_opts, |
649f6e77 DQ |
1162 | unsigned long kern_flags, |
1163 | unsigned long *set_kern_flags) | |
c9180a57 | 1164 | { |
b1d9e6b0 | 1165 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
1166 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
1167 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 1168 | } |
e0007529 | 1169 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 1170 | |
094f7b69 | 1171 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
1172 | struct super_block *newsb, |
1173 | unsigned long kern_flags, | |
1174 | unsigned long *set_kern_flags) | |
c9180a57 | 1175 | { |
0b4d3452 SM |
1176 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
1177 | kern_flags, set_kern_flags); | |
c9180a57 | 1178 | } |
e0007529 EP |
1179 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
1180 | ||
757cbe59 AV |
1181 | int security_add_mnt_opt(const char *option, const char *val, int len, |
1182 | void **mnt_opts) | |
e0007529 | 1183 | { |
757cbe59 AV |
1184 | return call_int_hook(sb_add_mnt_opt, -EINVAL, |
1185 | option, val, len, mnt_opts); | |
e0007529 | 1186 | } |
757cbe59 | 1187 | EXPORT_SYMBOL(security_add_mnt_opt); |
c9180a57 | 1188 | |
2db154b3 DH |
1189 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
1190 | { | |
1191 | return call_int_hook(move_mount, 0, from_path, to_path); | |
1192 | } | |
1193 | ||
ac5656d8 AG |
1194 | int security_path_notify(const struct path *path, u64 mask, |
1195 | unsigned int obj_type) | |
1196 | { | |
1197 | return call_int_hook(path_notify, 0, path, mask, obj_type); | |
1198 | } | |
1199 | ||
20510f2f JM |
1200 | int security_inode_alloc(struct inode *inode) |
1201 | { | |
afb1cbe3 CS |
1202 | int rc = lsm_inode_alloc(inode); |
1203 | ||
1204 | if (unlikely(rc)) | |
1205 | return rc; | |
1206 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
1207 | if (unlikely(rc)) | |
1208 | security_inode_free(inode); | |
1209 | return rc; | |
1210 | } | |
1211 | ||
1212 | static void inode_free_by_rcu(struct rcu_head *head) | |
1213 | { | |
1214 | /* | |
1215 | * The rcu head is at the start of the inode blob | |
1216 | */ | |
1217 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
1218 | } |
1219 | ||
1220 | void security_inode_free(struct inode *inode) | |
1221 | { | |
f381c272 | 1222 | integrity_inode_free(inode); |
f25fce3e | 1223 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
1224 | /* |
1225 | * The inode may still be referenced in a path walk and | |
1226 | * a call to security_inode_permission() can be made | |
1227 | * after inode_free_security() is called. Ideally, the VFS | |
1228 | * wouldn't do this, but fixing that is a much harder | |
1229 | * job. For now, simply free the i_security via RCU, and | |
1230 | * leave the current inode->i_security pointer intact. | |
1231 | * The inode will be freed after the RCU grace period too. | |
1232 | */ | |
1233 | if (inode->i_security) | |
1234 | call_rcu((struct rcu_head *)inode->i_security, | |
1235 | inode_free_by_rcu); | |
20510f2f JM |
1236 | } |
1237 | ||
d47be3df | 1238 | int security_dentry_init_security(struct dentry *dentry, int mode, |
4f3ccd76 | 1239 | const struct qstr *name, void **ctx, |
d47be3df DQ |
1240 | u32 *ctxlen) |
1241 | { | |
b1d9e6b0 CS |
1242 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, |
1243 | name, ctx, ctxlen); | |
d47be3df DQ |
1244 | } |
1245 | EXPORT_SYMBOL(security_dentry_init_security); | |
1246 | ||
2602625b VG |
1247 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
1248 | struct qstr *name, | |
1249 | const struct cred *old, struct cred *new) | |
1250 | { | |
1251 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
1252 | name, old, new); | |
1253 | } | |
1254 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
1255 | ||
20510f2f | 1256 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
1257 | const struct qstr *qstr, |
1258 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 1259 | { |
823eb1cc MZ |
1260 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
1261 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
1262 | int ret; |
1263 | ||
20510f2f | 1264 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 1265 | return 0; |
9d8f13ba | 1266 | |
9d8f13ba | 1267 | if (!initxattrs) |
e308fd3b JB |
1268 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
1269 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 1270 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 1271 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 1272 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
1273 | &lsm_xattr->name, |
1274 | &lsm_xattr->value, | |
1275 | &lsm_xattr->value_len); | |
1276 | if (ret) | |
1277 | goto out; | |
823eb1cc MZ |
1278 | |
1279 | evm_xattr = lsm_xattr + 1; | |
1280 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1281 | if (ret) | |
1282 | goto out; | |
9d8f13ba MZ |
1283 | ret = initxattrs(inode, new_xattrs, fs_data); |
1284 | out: | |
9548906b | 1285 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1286 | kfree(xattr->value); |
9d8f13ba MZ |
1287 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1288 | } | |
1289 | EXPORT_SYMBOL(security_inode_init_security); | |
1290 | ||
215b674b LG |
1291 | int security_inode_init_security_anon(struct inode *inode, |
1292 | const struct qstr *name, | |
1293 | const struct inode *context_inode) | |
1294 | { | |
1295 | return call_int_hook(inode_init_security_anon, 0, inode, name, | |
1296 | context_inode); | |
1297 | } | |
1298 | ||
9d8f13ba | 1299 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, |
9548906b | 1300 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1301 | void **value, size_t *len) |
20510f2f JM |
1302 | { |
1303 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1304 | return -EOPNOTSUPP; |
e308fd3b JB |
1305 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1306 | qstr, name, value, len); | |
20510f2f | 1307 | } |
9d8f13ba | 1308 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1309 | |
be6d3e56 | 1310 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1311 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1312 | unsigned int dev) |
1313 | { | |
c6f493d6 | 1314 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1315 | return 0; |
f25fce3e | 1316 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1317 | } |
1318 | EXPORT_SYMBOL(security_path_mknod); | |
1319 | ||
d3607752 | 1320 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1321 | { |
c6f493d6 | 1322 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1323 | return 0; |
f25fce3e | 1324 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1325 | } |
82140443 | 1326 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1327 | |
989f74e0 | 1328 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1329 | { |
c6f493d6 | 1330 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1331 | return 0; |
f25fce3e | 1332 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 | 1333 | } |
7fea21ae | 1334 | EXPORT_SYMBOL_GPL(security_path_rmdir); |
be6d3e56 | 1335 | |
989f74e0 | 1336 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1337 | { |
c6f493d6 | 1338 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1339 | return 0; |
f25fce3e | 1340 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1341 | } |
82140443 | 1342 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1343 | |
d3607752 | 1344 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1345 | const char *old_name) |
1346 | { | |
c6f493d6 | 1347 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1348 | return 0; |
f25fce3e | 1349 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 | 1350 | } |
7fea21ae | 1351 | EXPORT_SYMBOL_GPL(security_path_symlink); |
be6d3e56 | 1352 | |
3ccee46a | 1353 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1354 | struct dentry *new_dentry) |
1355 | { | |
c6f493d6 | 1356 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1357 | return 0; |
f25fce3e | 1358 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 | 1359 | } |
7fea21ae | 1360 | EXPORT_SYMBOL_GPL(security_path_link); |
be6d3e56 | 1361 | |
3ccee46a AV |
1362 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1363 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1364 | unsigned int flags) |
be6d3e56 | 1365 | { |
c6f493d6 DH |
1366 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1367 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1368 | return 0; |
da1ce067 MS |
1369 | |
1370 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e CS |
1371 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, |
1372 | old_dir, old_dentry); | |
da1ce067 MS |
1373 | if (err) |
1374 | return err; | |
1375 | } | |
1376 | ||
f25fce3e CS |
1377 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
1378 | new_dentry); | |
be6d3e56 | 1379 | } |
82140443 | 1380 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1381 | |
81f4c506 | 1382 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1383 | { |
c6f493d6 | 1384 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1385 | return 0; |
f25fce3e | 1386 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1387 | } |
7fea21ae | 1388 | EXPORT_SYMBOL_GPL(security_path_truncate); |
89eda068 | 1389 | |
be01f9f2 | 1390 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1391 | { |
c6f493d6 | 1392 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1393 | return 0; |
f25fce3e | 1394 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 | 1395 | } |
7fea21ae | 1396 | EXPORT_SYMBOL_GPL(security_path_chmod); |
89eda068 | 1397 | |
7fd25dac | 1398 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1399 | { |
c6f493d6 | 1400 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1401 | return 0; |
f25fce3e | 1402 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1403 | } |
7fea21ae | 1404 | EXPORT_SYMBOL_GPL(security_path_chown); |
8b8efb44 | 1405 | |
77b286c0 | 1406 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1407 | { |
f25fce3e | 1408 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1409 | } |
be6d3e56 KT |
1410 | #endif |
1411 | ||
4acdaf27 | 1412 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1413 | { |
1414 | if (unlikely(IS_PRIVATE(dir))) | |
1415 | return 0; | |
f25fce3e | 1416 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1417 | } |
800a9647 | 1418 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1419 | |
1420 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1421 | struct dentry *new_dentry) | |
1422 | { | |
c6f493d6 | 1423 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1424 | return 0; |
f25fce3e | 1425 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1426 | } |
1427 | ||
1428 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1429 | { | |
c6f493d6 | 1430 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1431 | return 0; |
f25fce3e | 1432 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1433 | } |
1434 | ||
1435 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1436 | const char *old_name) | |
1437 | { | |
1438 | if (unlikely(IS_PRIVATE(dir))) | |
1439 | return 0; | |
f25fce3e | 1440 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1441 | } |
1442 | ||
18bb1db3 | 1443 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1444 | { |
1445 | if (unlikely(IS_PRIVATE(dir))) | |
1446 | return 0; | |
f25fce3e | 1447 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1448 | } |
800a9647 | 1449 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1450 | |
1451 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1452 | { | |
c6f493d6 | 1453 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1454 | return 0; |
f25fce3e | 1455 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1456 | } |
1457 | ||
1a67aafb | 1458 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1459 | { |
1460 | if (unlikely(IS_PRIVATE(dir))) | |
1461 | return 0; | |
f25fce3e | 1462 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1463 | } |
1464 | ||
1465 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1466 | struct inode *new_dir, struct dentry *new_dentry, |
1467 | unsigned int flags) | |
20510f2f | 1468 | { |
c6f493d6 DH |
1469 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1470 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1471 | return 0; |
da1ce067 MS |
1472 | |
1473 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1474 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1475 | old_dir, old_dentry); |
1476 | if (err) | |
1477 | return err; | |
1478 | } | |
1479 | ||
f25fce3e | 1480 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1481 | new_dir, new_dentry); |
1482 | } | |
1483 | ||
1484 | int security_inode_readlink(struct dentry *dentry) | |
1485 | { | |
c6f493d6 | 1486 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1487 | return 0; |
f25fce3e | 1488 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1489 | } |
1490 | ||
bda0be7a N |
1491 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1492 | bool rcu) | |
20510f2f | 1493 | { |
bda0be7a | 1494 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1495 | return 0; |
e22619a2 | 1496 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1497 | } |
1498 | ||
b77b0646 | 1499 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1500 | { |
1501 | if (unlikely(IS_PRIVATE(inode))) | |
1502 | return 0; | |
f25fce3e | 1503 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f | 1504 | } |
7fea21ae | 1505 | EXPORT_SYMBOL_GPL(security_inode_permission); |
20510f2f JM |
1506 | |
1507 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
1508 | { | |
817b54aa MZ |
1509 | int ret; |
1510 | ||
c6f493d6 | 1511 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1512 | return 0; |
f25fce3e | 1513 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1514 | if (ret) |
1515 | return ret; | |
1516 | return evm_inode_setattr(dentry, attr); | |
20510f2f | 1517 | } |
b1da47e2 | 1518 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1519 | |
3f7036a0 | 1520 | int security_inode_getattr(const struct path *path) |
20510f2f | 1521 | { |
c6f493d6 | 1522 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1523 | return 0; |
f25fce3e | 1524 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1525 | } |
1526 | ||
71bc356f CB |
1527 | int security_inode_setxattr(struct user_namespace *mnt_userns, |
1528 | struct dentry *dentry, const char *name, | |
8f0cfa52 | 1529 | const void *value, size_t size, int flags) |
20510f2f | 1530 | { |
3e1be52d MZ |
1531 | int ret; |
1532 | ||
c6f493d6 | 1533 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1534 | return 0; |
b1d9e6b0 CS |
1535 | /* |
1536 | * SELinux and Smack integrate the cap call, | |
1537 | * so assume that all LSMs supplying this call do so. | |
1538 | */ | |
71bc356f CB |
1539 | ret = call_int_hook(inode_setxattr, 1, mnt_userns, dentry, name, value, |
1540 | size, flags); | |
b1d9e6b0 CS |
1541 | |
1542 | if (ret == 1) | |
1543 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1544 | if (ret) |
1545 | return ret; | |
1546 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1547 | if (ret) |
1548 | return ret; | |
7e135dc7 | 1549 | return evm_inode_setxattr(mnt_userns, dentry, name, value, size); |
20510f2f JM |
1550 | } |
1551 | ||
8f0cfa52 DH |
1552 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1553 | const void *value, size_t size, int flags) | |
20510f2f | 1554 | { |
c6f493d6 | 1555 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1556 | return; |
f25fce3e | 1557 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1558 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1559 | } |
1560 | ||
8f0cfa52 | 1561 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1562 | { |
c6f493d6 | 1563 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1564 | return 0; |
f25fce3e | 1565 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1566 | } |
1567 | ||
1568 | int security_inode_listxattr(struct dentry *dentry) | |
1569 | { | |
c6f493d6 | 1570 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1571 | return 0; |
f25fce3e | 1572 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1573 | } |
1574 | ||
71bc356f CB |
1575 | int security_inode_removexattr(struct user_namespace *mnt_userns, |
1576 | struct dentry *dentry, const char *name) | |
20510f2f | 1577 | { |
3e1be52d MZ |
1578 | int ret; |
1579 | ||
c6f493d6 | 1580 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1581 | return 0; |
b1d9e6b0 CS |
1582 | /* |
1583 | * SELinux and Smack integrate the cap call, | |
1584 | * so assume that all LSMs supplying this call do so. | |
1585 | */ | |
71bc356f | 1586 | ret = call_int_hook(inode_removexattr, 1, mnt_userns, dentry, name); |
b1d9e6b0 | 1587 | if (ret == 1) |
71bc356f | 1588 | ret = cap_inode_removexattr(mnt_userns, dentry, name); |
42c63330 MZ |
1589 | if (ret) |
1590 | return ret; | |
1591 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1592 | if (ret) |
1593 | return ret; | |
7e135dc7 | 1594 | return evm_inode_removexattr(mnt_userns, dentry, name); |
20510f2f JM |
1595 | } |
1596 | ||
b5376771 SH |
1597 | int security_inode_need_killpriv(struct dentry *dentry) |
1598 | { | |
f25fce3e | 1599 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1600 | } |
1601 | ||
71bc356f CB |
1602 | int security_inode_killpriv(struct user_namespace *mnt_userns, |
1603 | struct dentry *dentry) | |
b5376771 | 1604 | { |
71bc356f | 1605 | return call_int_hook(inode_killpriv, 0, mnt_userns, dentry); |
b5376771 SH |
1606 | } |
1607 | ||
71bc356f CB |
1608 | int security_inode_getsecurity(struct user_namespace *mnt_userns, |
1609 | struct inode *inode, const char *name, | |
1610 | void **buffer, bool alloc) | |
20510f2f | 1611 | { |
2885c1e3 CS |
1612 | struct security_hook_list *hp; |
1613 | int rc; | |
1614 | ||
20510f2f | 1615 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1616 | return LSM_RET_DEFAULT(inode_getsecurity); |
2885c1e3 CS |
1617 | /* |
1618 | * Only one module will provide an attribute with a given name. | |
1619 | */ | |
df0ce173 | 1620 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
71bc356f | 1621 | rc = hp->hook.inode_getsecurity(mnt_userns, inode, name, buffer, alloc); |
98e828a0 | 1622 | if (rc != LSM_RET_DEFAULT(inode_getsecurity)) |
2885c1e3 CS |
1623 | return rc; |
1624 | } | |
98e828a0 | 1625 | return LSM_RET_DEFAULT(inode_getsecurity); |
20510f2f JM |
1626 | } |
1627 | ||
1628 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1629 | { | |
2885c1e3 CS |
1630 | struct security_hook_list *hp; |
1631 | int rc; | |
1632 | ||
20510f2f | 1633 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1634 | return LSM_RET_DEFAULT(inode_setsecurity); |
2885c1e3 CS |
1635 | /* |
1636 | * Only one module will provide an attribute with a given name. | |
1637 | */ | |
df0ce173 | 1638 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1639 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1640 | flags); | |
98e828a0 | 1641 | if (rc != LSM_RET_DEFAULT(inode_setsecurity)) |
2885c1e3 CS |
1642 | return rc; |
1643 | } | |
98e828a0 | 1644 | return LSM_RET_DEFAULT(inode_setsecurity); |
20510f2f JM |
1645 | } |
1646 | ||
1647 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1648 | { | |
1649 | if (unlikely(IS_PRIVATE(inode))) | |
1650 | return 0; | |
f25fce3e | 1651 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1652 | } |
c9bccef6 | 1653 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1654 | |
59b31922 | 1655 | void security_inode_getsecid(struct inode *inode, struct lsmblob *blob) |
8a076191 | 1656 | { |
59b31922 CS |
1657 | struct security_hook_list *hp; |
1658 | ||
1659 | lsmblob_init(blob, 0); | |
1660 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecid, list) { | |
1661 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
1662 | continue; | |
1663 | hp->hook.inode_getsecid(inode, &blob->secid[hp->lsmid->slot]); | |
1664 | } | |
8a076191 AD |
1665 | } |
1666 | ||
d8ad8b49 VG |
1667 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1668 | { | |
1669 | return call_int_hook(inode_copy_up, 0, src, new); | |
1670 | } | |
1671 | EXPORT_SYMBOL(security_inode_copy_up); | |
1672 | ||
121ab822 VG |
1673 | int security_inode_copy_up_xattr(const char *name) |
1674 | { | |
23e390cd KS |
1675 | struct security_hook_list *hp; |
1676 | int rc; | |
1677 | ||
1678 | /* | |
1679 | * The implementation can return 0 (accept the xattr), 1 (discard the | |
1680 | * xattr), -EOPNOTSUPP if it does not know anything about the xattr or | |
1681 | * any other error code incase of an error. | |
1682 | */ | |
1683 | hlist_for_each_entry(hp, | |
1684 | &security_hook_heads.inode_copy_up_xattr, list) { | |
1685 | rc = hp->hook.inode_copy_up_xattr(name); | |
1686 | if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr)) | |
1687 | return rc; | |
1688 | } | |
1689 | ||
1690 | return LSM_RET_DEFAULT(inode_copy_up_xattr); | |
121ab822 VG |
1691 | } |
1692 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1693 | ||
b230d5ab OM |
1694 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1695 | struct kernfs_node *kn) | |
1696 | { | |
1697 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1698 | } | |
1699 | ||
20510f2f JM |
1700 | int security_file_permission(struct file *file, int mask) |
1701 | { | |
c4ec54b4 EP |
1702 | int ret; |
1703 | ||
f25fce3e | 1704 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1705 | if (ret) |
1706 | return ret; | |
1707 | ||
1708 | return fsnotify_perm(file, mask); | |
20510f2f | 1709 | } |
7fea21ae | 1710 | EXPORT_SYMBOL_GPL(security_file_permission); |
20510f2f JM |
1711 | |
1712 | int security_file_alloc(struct file *file) | |
1713 | { | |
33bf60ca CS |
1714 | int rc = lsm_file_alloc(file); |
1715 | ||
1716 | if (rc) | |
1717 | return rc; | |
1718 | rc = call_int_hook(file_alloc_security, 0, file); | |
1719 | if (unlikely(rc)) | |
1720 | security_file_free(file); | |
1721 | return rc; | |
20510f2f JM |
1722 | } |
1723 | ||
1724 | void security_file_free(struct file *file) | |
1725 | { | |
33bf60ca CS |
1726 | void *blob; |
1727 | ||
f25fce3e | 1728 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1729 | |
1730 | blob = file->f_security; | |
1731 | if (blob) { | |
1732 | file->f_security = NULL; | |
1733 | kmem_cache_free(lsm_file_cache, blob); | |
1734 | } | |
20510f2f JM |
1735 | } |
1736 | ||
1737 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1738 | { | |
f25fce3e | 1739 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f | 1740 | } |
292f902a | 1741 | EXPORT_SYMBOL_GPL(security_file_ioctl); |
20510f2f | 1742 | |
98de59bf | 1743 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1744 | { |
8b3ec681 | 1745 | /* |
98de59bf AV |
1746 | * Does we have PROT_READ and does the application expect |
1747 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1748 | */ |
98de59bf AV |
1749 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1750 | return prot; | |
8b3ec681 | 1751 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1752 | return prot; |
1753 | /* | |
1754 | * if that's an anonymous mapping, let it. | |
1755 | */ | |
1756 | if (!file) | |
1757 | return prot | PROT_EXEC; | |
1758 | /* | |
1759 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1760 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1761 | */ |
90f8572b | 1762 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1763 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1764 | if (file->f_op->mmap_capabilities) { |
1765 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1766 | if (!(caps & NOMMU_MAP_EXEC)) | |
1767 | return prot; | |
1768 | } | |
8b3ec681 | 1769 | #endif |
98de59bf | 1770 | return prot | PROT_EXEC; |
8b3ec681 | 1771 | } |
98de59bf AV |
1772 | /* anything on noexec mount won't get PROT_EXEC */ |
1773 | return prot; | |
1774 | } | |
1775 | ||
1776 | int security_mmap_file(struct file *file, unsigned long prot, | |
1777 | unsigned long flags) | |
1778 | { | |
1779 | int ret; | |
f25fce3e | 1780 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1781 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1782 | if (ret) |
1783 | return ret; | |
1784 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1785 | } |
1786 | ||
e5467859 AV |
1787 | int security_mmap_addr(unsigned long addr) |
1788 | { | |
f25fce3e | 1789 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1790 | } |
1791 | ||
20510f2f JM |
1792 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1793 | unsigned long prot) | |
1794 | { | |
8eb613c0 MZ |
1795 | int ret; |
1796 | ||
1797 | ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot); | |
1798 | if (ret) | |
1799 | return ret; | |
1800 | return ima_file_mprotect(vma, prot); | |
20510f2f JM |
1801 | } |
1802 | ||
1803 | int security_file_lock(struct file *file, unsigned int cmd) | |
1804 | { | |
f25fce3e | 1805 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1806 | } |
1807 | ||
1808 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1809 | { | |
f25fce3e | 1810 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1811 | } |
1812 | ||
e0b93edd | 1813 | void security_file_set_fowner(struct file *file) |
20510f2f | 1814 | { |
f25fce3e | 1815 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1816 | } |
1817 | ||
1818 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1819 | struct fown_struct *fown, int sig) | |
1820 | { | |
f25fce3e | 1821 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1822 | } |
1823 | ||
1824 | int security_file_receive(struct file *file) | |
1825 | { | |
f25fce3e | 1826 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1827 | } |
1828 | ||
e3f20ae2 | 1829 | int security_file_open(struct file *file) |
20510f2f | 1830 | { |
c4ec54b4 EP |
1831 | int ret; |
1832 | ||
94817692 | 1833 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1834 | if (ret) |
1835 | return ret; | |
1836 | ||
1837 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1838 | } |
1839 | ||
e4e55b47 TH |
1840 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1841 | { | |
6afcff0a CS |
1842 | int *odisplay = current->security; |
1843 | int *ndisplay; | |
f4ad8f2c CS |
1844 | int rc = lsm_task_alloc(task); |
1845 | ||
6afcff0a | 1846 | if (unlikely(rc)) |
f4ad8f2c | 1847 | return rc; |
6afcff0a | 1848 | |
f4ad8f2c | 1849 | rc = call_int_hook(task_alloc, 0, task, clone_flags); |
6afcff0a | 1850 | if (unlikely(rc)) { |
f4ad8f2c | 1851 | security_task_free(task); |
6afcff0a CS |
1852 | return rc; |
1853 | } | |
1854 | ||
1855 | if (odisplay) { | |
1856 | ndisplay = task->security; | |
1857 | if (ndisplay) | |
1858 | *ndisplay = *odisplay; | |
1859 | } | |
1860 | ||
1861 | return 0; | |
e4e55b47 TH |
1862 | } |
1863 | ||
1a2a4d06 KC |
1864 | void security_task_free(struct task_struct *task) |
1865 | { | |
f25fce3e | 1866 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1867 | |
1868 | kfree(task->security); | |
1869 | task->security = NULL; | |
1a2a4d06 KC |
1870 | } |
1871 | ||
ee18d64c DH |
1872 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1873 | { | |
bbd3662a CS |
1874 | int rc = lsm_cred_alloc(cred, gfp); |
1875 | ||
1876 | if (rc) | |
1877 | return rc; | |
1878 | ||
1879 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1880 | if (unlikely(rc)) |
bbd3662a CS |
1881 | security_cred_free(cred); |
1882 | return rc; | |
ee18d64c DH |
1883 | } |
1884 | ||
d84f4f99 | 1885 | void security_cred_free(struct cred *cred) |
20510f2f | 1886 | { |
a5795fd3 JM |
1887 | /* |
1888 | * There is a failure case in prepare_creds() that | |
1889 | * may result in a call here with ->security being NULL. | |
1890 | */ | |
1891 | if (unlikely(cred->security == NULL)) | |
1892 | return; | |
1893 | ||
f25fce3e | 1894 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1895 | |
1896 | kfree(cred->security); | |
1897 | cred->security = NULL; | |
20510f2f JM |
1898 | } |
1899 | ||
d84f4f99 | 1900 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1901 | { |
bbd3662a CS |
1902 | int rc = lsm_cred_alloc(new, gfp); |
1903 | ||
1904 | if (rc) | |
1905 | return rc; | |
1906 | ||
1907 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1908 | if (unlikely(rc)) |
bbd3662a CS |
1909 | security_cred_free(new); |
1910 | return rc; | |
d84f4f99 DH |
1911 | } |
1912 | ||
ee18d64c DH |
1913 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1914 | { | |
f25fce3e | 1915 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1916 | } |
1917 | ||
36fd78ba | 1918 | void security_cred_getsecid(const struct cred *c, struct lsmblob *blob) |
3ec30113 | 1919 | { |
36fd78ba CS |
1920 | struct security_hook_list *hp; |
1921 | ||
1922 | lsmblob_init(blob, 0); | |
1923 | hlist_for_each_entry(hp, &security_hook_heads.cred_getsecid, list) { | |
1924 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
1925 | continue; | |
1926 | hp->hook.cred_getsecid(c, &blob->secid[hp->lsmid->slot]); | |
1927 | } | |
3ec30113 MG |
1928 | } |
1929 | EXPORT_SYMBOL(security_cred_getsecid); | |
1930 | ||
27b390fd | 1931 | int security_kernel_act_as(struct cred *new, struct lsmblob *blob) |
3a3b7ce9 | 1932 | { |
27b390fd CS |
1933 | struct security_hook_list *hp; |
1934 | int rc; | |
1935 | ||
1936 | hlist_for_each_entry(hp, &security_hook_heads.kernel_act_as, list) { | |
1937 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
1938 | continue; | |
1939 | rc = hp->hook.kernel_act_as(new, blob->secid[hp->lsmid->slot]); | |
1940 | if (rc != 0) | |
1941 | return rc; | |
1942 | } | |
1943 | return 0; | |
3a3b7ce9 DH |
1944 | } |
1945 | ||
1946 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1947 | { | |
f25fce3e | 1948 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1949 | } |
1950 | ||
dd8dbf2e | 1951 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1952 | { |
6eb864c1 MK |
1953 | int ret; |
1954 | ||
1955 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1956 | if (ret) | |
1957 | return ret; | |
1958 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1959 | } |
1960 | ||
2039bda1 KC |
1961 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, |
1962 | bool contents) | |
39eeb4fb MZ |
1963 | { |
1964 | int ret; | |
1965 | ||
2039bda1 | 1966 | ret = call_int_hook(kernel_read_file, 0, file, id, contents); |
39eeb4fb MZ |
1967 | if (ret) |
1968 | return ret; | |
2039bda1 | 1969 | return ima_read_file(file, id, contents); |
39eeb4fb MZ |
1970 | } |
1971 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1972 | ||
bc8ca5b9 MZ |
1973 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1974 | enum kernel_read_file_id id) | |
b44a7dfc | 1975 | { |
cf222217 MZ |
1976 | int ret; |
1977 | ||
1978 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1979 | if (ret) | |
1980 | return ret; | |
1981 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1982 | } |
1983 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1984 | ||
b64fcae7 | 1985 | int security_kernel_load_data(enum kernel_load_data_id id, bool contents) |
377179cd | 1986 | { |
16c267aa MZ |
1987 | int ret; |
1988 | ||
b64fcae7 | 1989 | ret = call_int_hook(kernel_load_data, 0, id, contents); |
16c267aa MZ |
1990 | if (ret) |
1991 | return ret; | |
b64fcae7 | 1992 | return ima_load_data(id, contents); |
377179cd | 1993 | } |
83a68a06 | 1994 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1995 | |
b64fcae7 KC |
1996 | int security_kernel_post_load_data(char *buf, loff_t size, |
1997 | enum kernel_load_data_id id, | |
1998 | char *description) | |
1999 | { | |
2000 | int ret; | |
2001 | ||
2002 | ret = call_int_hook(kernel_post_load_data, 0, buf, size, id, | |
2003 | description); | |
2004 | if (ret) | |
2005 | return ret; | |
2006 | return ima_post_load_data(buf, size, id, description); | |
2007 | } | |
2008 | EXPORT_SYMBOL_GPL(security_kernel_post_load_data); | |
2009 | ||
d84f4f99 DH |
2010 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
2011 | int flags) | |
20510f2f | 2012 | { |
f25fce3e | 2013 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
2014 | } |
2015 | ||
39030e13 TC |
2016 | int security_task_fix_setgid(struct cred *new, const struct cred *old, |
2017 | int flags) | |
2018 | { | |
2019 | return call_int_hook(task_fix_setgid, 0, new, old, flags); | |
2020 | } | |
2021 | ||
20510f2f JM |
2022 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
2023 | { | |
f25fce3e | 2024 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
2025 | } |
2026 | ||
2027 | int security_task_getpgid(struct task_struct *p) | |
2028 | { | |
f25fce3e | 2029 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
2030 | } |
2031 | ||
2032 | int security_task_getsid(struct task_struct *p) | |
2033 | { | |
f25fce3e | 2034 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
2035 | } |
2036 | ||
e209474e | 2037 | void security_task_getsecid_subj(struct task_struct *p, struct lsmblob *blob) |
20510f2f | 2038 | { |
e209474e CS |
2039 | struct security_hook_list *hp; |
2040 | ||
2041 | lsmblob_init(blob, 0); | |
2042 | hlist_for_each_entry(hp, &security_hook_heads.task_getsecid_subj, list) { | |
2043 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2044 | continue; | |
2045 | hp->hook.task_getsecid_subj(p, &blob->secid[hp->lsmid->slot]); | |
2046 | } | |
20510f2f | 2047 | } |
4ebd7651 PM |
2048 | EXPORT_SYMBOL(security_task_getsecid_subj); |
2049 | ||
e209474e | 2050 | void security_task_getsecid_obj(struct task_struct *p, struct lsmblob *blob) |
4ebd7651 | 2051 | { |
e209474e CS |
2052 | struct security_hook_list *hp; |
2053 | ||
2054 | lsmblob_init(blob, 0); | |
2055 | hlist_for_each_entry(hp, &security_hook_heads.task_getsecid_obj, list) { | |
2056 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2057 | continue; | |
2058 | hp->hook.task_getsecid_obj(p, &blob->secid[hp->lsmid->slot]); | |
2059 | } | |
4ebd7651 PM |
2060 | } |
2061 | EXPORT_SYMBOL(security_task_getsecid_obj); | |
20510f2f | 2062 | |
20510f2f JM |
2063 | int security_task_setnice(struct task_struct *p, int nice) |
2064 | { | |
f25fce3e | 2065 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
2066 | } |
2067 | ||
2068 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
2069 | { | |
f25fce3e | 2070 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
2071 | } |
2072 | ||
2073 | int security_task_getioprio(struct task_struct *p) | |
2074 | { | |
f25fce3e | 2075 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
2076 | } |
2077 | ||
791ec491 SS |
2078 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
2079 | unsigned int flags) | |
2080 | { | |
2081 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
2082 | } | |
2083 | ||
8fd00b4d JS |
2084 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
2085 | struct rlimit *new_rlim) | |
20510f2f | 2086 | { |
f25fce3e | 2087 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
2088 | } |
2089 | ||
b0ae1981 | 2090 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 2091 | { |
f25fce3e | 2092 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
2093 | } |
2094 | ||
2095 | int security_task_getscheduler(struct task_struct *p) | |
2096 | { | |
f25fce3e | 2097 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
2098 | } |
2099 | ||
2100 | int security_task_movememory(struct task_struct *p) | |
2101 | { | |
f25fce3e | 2102 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
2103 | } |
2104 | ||
ae7795bc | 2105 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 2106 | int sig, const struct cred *cred) |
20510f2f | 2107 | { |
6b4f3d01 | 2108 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
2109 | } |
2110 | ||
20510f2f | 2111 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 2112 | unsigned long arg4, unsigned long arg5) |
20510f2f | 2113 | { |
b1d9e6b0 | 2114 | int thisrc; |
98e828a0 | 2115 | int rc = LSM_RET_DEFAULT(task_prctl); |
b1d9e6b0 CS |
2116 | struct security_hook_list *hp; |
2117 | ||
df0ce173 | 2118 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 | 2119 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
98e828a0 | 2120 | if (thisrc != LSM_RET_DEFAULT(task_prctl)) { |
b1d9e6b0 CS |
2121 | rc = thisrc; |
2122 | if (thisrc != 0) | |
2123 | break; | |
2124 | } | |
2125 | } | |
2126 | return rc; | |
20510f2f JM |
2127 | } |
2128 | ||
2129 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
2130 | { | |
f25fce3e | 2131 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
2132 | } |
2133 | ||
2134 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
2135 | { | |
f25fce3e | 2136 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
2137 | } |
2138 | ||
f9d254ba | 2139 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, struct lsmblob *blob) |
8a076191 | 2140 | { |
f9d254ba CS |
2141 | struct security_hook_list *hp; |
2142 | ||
2143 | lsmblob_init(blob, 0); | |
2144 | hlist_for_each_entry(hp, &security_hook_heads.ipc_getsecid, list) { | |
2145 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2146 | continue; | |
2147 | hp->hook.ipc_getsecid(ipcp, &blob->secid[hp->lsmid->slot]); | |
2148 | } | |
8a076191 AD |
2149 | } |
2150 | ||
20510f2f JM |
2151 | int security_msg_msg_alloc(struct msg_msg *msg) |
2152 | { | |
ecd5f82e CS |
2153 | int rc = lsm_msg_msg_alloc(msg); |
2154 | ||
2155 | if (unlikely(rc)) | |
2156 | return rc; | |
2157 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
2158 | if (unlikely(rc)) | |
2159 | security_msg_msg_free(msg); | |
2160 | return rc; | |
20510f2f JM |
2161 | } |
2162 | ||
2163 | void security_msg_msg_free(struct msg_msg *msg) | |
2164 | { | |
f25fce3e | 2165 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
2166 | kfree(msg->security); |
2167 | msg->security = NULL; | |
20510f2f JM |
2168 | } |
2169 | ||
d8c6e854 | 2170 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 2171 | { |
ecd5f82e CS |
2172 | int rc = lsm_ipc_alloc(msq); |
2173 | ||
2174 | if (unlikely(rc)) | |
2175 | return rc; | |
2176 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
2177 | if (unlikely(rc)) | |
2178 | security_msg_queue_free(msq); | |
2179 | return rc; | |
20510f2f JM |
2180 | } |
2181 | ||
d8c6e854 | 2182 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 2183 | { |
f25fce3e | 2184 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
2185 | kfree(msq->security); |
2186 | msq->security = NULL; | |
20510f2f JM |
2187 | } |
2188 | ||
d8c6e854 | 2189 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 2190 | { |
f25fce3e | 2191 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
2192 | } |
2193 | ||
d8c6e854 | 2194 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 2195 | { |
f25fce3e | 2196 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
2197 | } |
2198 | ||
d8c6e854 | 2199 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
2200 | struct msg_msg *msg, int msqflg) |
2201 | { | |
f25fce3e | 2202 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
2203 | } |
2204 | ||
d8c6e854 | 2205 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
2206 | struct task_struct *target, long type, int mode) |
2207 | { | |
f25fce3e | 2208 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
2209 | } |
2210 | ||
7191adff | 2211 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 2212 | { |
ecd5f82e CS |
2213 | int rc = lsm_ipc_alloc(shp); |
2214 | ||
2215 | if (unlikely(rc)) | |
2216 | return rc; | |
2217 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
2218 | if (unlikely(rc)) | |
2219 | security_shm_free(shp); | |
2220 | return rc; | |
20510f2f JM |
2221 | } |
2222 | ||
7191adff | 2223 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 2224 | { |
f25fce3e | 2225 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
2226 | kfree(shp->security); |
2227 | shp->security = NULL; | |
20510f2f JM |
2228 | } |
2229 | ||
7191adff | 2230 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 2231 | { |
f25fce3e | 2232 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
2233 | } |
2234 | ||
7191adff | 2235 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 2236 | { |
f25fce3e | 2237 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
2238 | } |
2239 | ||
7191adff | 2240 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 2241 | { |
f25fce3e | 2242 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
2243 | } |
2244 | ||
aefad959 | 2245 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 2246 | { |
ecd5f82e CS |
2247 | int rc = lsm_ipc_alloc(sma); |
2248 | ||
2249 | if (unlikely(rc)) | |
2250 | return rc; | |
2251 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
2252 | if (unlikely(rc)) | |
2253 | security_sem_free(sma); | |
2254 | return rc; | |
20510f2f JM |
2255 | } |
2256 | ||
aefad959 | 2257 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 2258 | { |
f25fce3e | 2259 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
2260 | kfree(sma->security); |
2261 | sma->security = NULL; | |
20510f2f JM |
2262 | } |
2263 | ||
aefad959 | 2264 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 2265 | { |
f25fce3e | 2266 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
2267 | } |
2268 | ||
aefad959 | 2269 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 2270 | { |
f25fce3e | 2271 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
2272 | } |
2273 | ||
aefad959 | 2274 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
2275 | unsigned nsops, int alter) |
2276 | { | |
f25fce3e | 2277 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
2278 | } |
2279 | ||
2280 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
2281 | { | |
2282 | if (unlikely(inode && IS_PRIVATE(inode))) | |
2283 | return; | |
f25fce3e | 2284 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
2285 | } |
2286 | EXPORT_SYMBOL(security_d_instantiate); | |
2287 | ||
6d9c939d CS |
2288 | int security_getprocattr(struct task_struct *p, const char *lsm, char *name, |
2289 | char **value) | |
20510f2f | 2290 | { |
6d9c939d | 2291 | struct security_hook_list *hp; |
58cb9520 CS |
2292 | char *final = NULL; |
2293 | char *cp; | |
2294 | int rc = 0; | |
2295 | int finallen = 0; | |
6afcff0a CS |
2296 | int display = lsm_task_display(current); |
2297 | int slot = 0; | |
2298 | ||
2299 | if (!strcmp(name, "display")) { | |
2300 | /* | |
2301 | * lsm_slot will be 0 if there are no displaying modules. | |
2302 | */ | |
2303 | if (lsm_slot == 0) | |
2304 | return -EINVAL; | |
2305 | ||
2306 | /* | |
2307 | * Only allow getting the current process' display. | |
2308 | * There are too few reasons to get another process' | |
2309 | * display and too many LSM policy issues. | |
2310 | */ | |
2311 | if (current != p) | |
2312 | return -EINVAL; | |
2313 | ||
2314 | display = lsm_task_display(p); | |
2315 | if (display != LSMBLOB_INVALID) | |
2316 | slot = display; | |
2317 | *value = kstrdup(lsm_slotlist[slot]->lsm, GFP_KERNEL); | |
2318 | if (*value) | |
2319 | return strlen(*value); | |
2320 | return -ENOMEM; | |
2321 | } | |
6d9c939d | 2322 | |
58cb9520 CS |
2323 | if (!strcmp(name, "context")) { |
2324 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, | |
2325 | list) { | |
2326 | rc = hp->hook.getprocattr(p, "context", &cp); | |
2327 | if (rc == -EINVAL) | |
2328 | continue; | |
2329 | if (rc < 0) { | |
2330 | kfree(final); | |
2331 | return rc; | |
2332 | } | |
2333 | rc = append_ctx(&final, &finallen, hp->lsmid->lsm, | |
2334 | cp, rc); | |
2335 | kfree(cp); | |
2336 | if (rc < 0) { | |
2337 | kfree(final); | |
2338 | return rc; | |
2339 | } | |
2340 | } | |
2341 | if (final == NULL) | |
2342 | return -EINVAL; | |
2343 | *value = final; | |
2344 | return finallen; | |
2345 | } | |
2346 | ||
6d9c939d | 2347 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { |
f17b27a2 | 2348 | if (lsm != NULL && strcmp(lsm, hp->lsmid->lsm)) |
6d9c939d | 2349 | continue; |
6afcff0a CS |
2350 | if (lsm == NULL && display != LSMBLOB_INVALID && |
2351 | display != hp->lsmid->slot) | |
2352 | continue; | |
6d9c939d CS |
2353 | return hp->hook.getprocattr(p, name, value); |
2354 | } | |
98e828a0 | 2355 | return LSM_RET_DEFAULT(getprocattr); |
20510f2f JM |
2356 | } |
2357 | ||
6afcff0a CS |
2358 | /** |
2359 | * security_setprocattr - Set process attributes via /proc | |
2360 | * @lsm: name of module involved, or NULL | |
2361 | * @name: name of the attribute | |
2362 | * @value: value to set the attribute to | |
2363 | * @size: size of the value | |
2364 | * | |
2365 | * Set the process attribute for the specified security module | |
2366 | * to the specified value. Note that this can only be used to set | |
2367 | * the process attributes for the current, or "self" process. | |
2368 | * The /proc code has already done this check. | |
2369 | * | |
2370 | * Returns 0 on success, an appropriate code otherwise. | |
2371 | */ | |
6d9c939d CS |
2372 | int security_setprocattr(const char *lsm, const char *name, void *value, |
2373 | size_t size) | |
20510f2f | 2374 | { |
6d9c939d | 2375 | struct security_hook_list *hp; |
6afcff0a CS |
2376 | char *termed; |
2377 | char *copy; | |
2378 | int *display = current->security; | |
2379 | int rc = -EINVAL; | |
2380 | int slot = 0; | |
2381 | ||
2382 | if (!strcmp(name, "display")) { | |
2383 | /* | |
2384 | * Change the "display" value only if all the security | |
2385 | * modules that support setting a procattr allow it. | |
2386 | * It is assumed that all such security modules will be | |
2387 | * cooperative. | |
2388 | */ | |
2389 | if (size == 0) | |
2390 | return -EINVAL; | |
2391 | ||
2392 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, | |
2393 | list) { | |
2394 | rc = hp->hook.setprocattr(name, value, size); | |
85ff5379 | 2395 | if (rc < 0 && rc != -EINVAL) |
6afcff0a CS |
2396 | return rc; |
2397 | } | |
2398 | ||
2399 | rc = -EINVAL; | |
2400 | ||
2401 | copy = kmemdup_nul(value, size, GFP_KERNEL); | |
2402 | if (copy == NULL) | |
2403 | return -ENOMEM; | |
2404 | ||
2405 | termed = strsep(©, " \n"); | |
2406 | ||
2407 | for (slot = 0; slot < lsm_slot; slot++) | |
2408 | if (!strcmp(termed, lsm_slotlist[slot]->lsm)) { | |
2409 | *display = lsm_slotlist[slot]->slot; | |
2410 | rc = size; | |
2411 | break; | |
2412 | } | |
2413 | ||
2414 | kfree(termed); | |
2415 | return rc; | |
2416 | } | |
6d9c939d CS |
2417 | |
2418 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
f17b27a2 | 2419 | if (lsm != NULL && strcmp(lsm, hp->lsmid->lsm)) |
6d9c939d | 2420 | continue; |
6afcff0a CS |
2421 | if (lsm == NULL && *display != LSMBLOB_INVALID && |
2422 | *display != hp->lsmid->slot) | |
2423 | continue; | |
6d9c939d CS |
2424 | return hp->hook.setprocattr(name, value, size); |
2425 | } | |
98e828a0 | 2426 | return LSM_RET_DEFAULT(setprocattr); |
20510f2f JM |
2427 | } |
2428 | ||
2429 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2430 | { | |
f25fce3e | 2431 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2432 | } |
20510f2f | 2433 | |
746df9b5 DQ |
2434 | int security_ismaclabel(const char *name) |
2435 | { | |
f25fce3e | 2436 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2437 | } |
2438 | EXPORT_SYMBOL(security_ismaclabel); | |
2439 | ||
85ff5379 CS |
2440 | int security_secid_to_secctx(struct lsmblob *blob, struct lsmcontext *cp, |
2441 | int display) | |
20510f2f | 2442 | { |
0550cfe8 | 2443 | struct security_hook_list *hp; |
0550cfe8 | 2444 | |
62e4d84c CS |
2445 | memset(cp, 0, sizeof(*cp)); |
2446 | ||
85ff5379 CS |
2447 | /* |
2448 | * display either is the slot number use for formatting | |
2449 | * or an instruction on which relative slot to use. | |
2450 | */ | |
2451 | if (display == LSMBLOB_DISPLAY) | |
2452 | display = lsm_task_display(current); | |
2453 | else if (display == LSMBLOB_FIRST) | |
2454 | display = LSMBLOB_INVALID; | |
2455 | else if (display < 0) { | |
2456 | WARN_ONCE(true, | |
2457 | "LSM: %s unknown display\n", __func__); | |
2458 | display = LSMBLOB_INVALID; | |
2459 | } else if (display >= lsm_slot) { | |
2460 | WARN_ONCE(true, | |
2461 | "LSM: %s invalid display\n", __func__); | |
2462 | display = LSMBLOB_INVALID; | |
2463 | } | |
2464 | ||
2465 | ||
0550cfe8 | 2466 | hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) { |
1c55161c CS |
2467 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) |
2468 | continue; | |
62e4d84c CS |
2469 | if (display == LSMBLOB_INVALID || display == hp->lsmid->slot) { |
2470 | cp->slot = hp->lsmid->slot; | |
6afcff0a CS |
2471 | return hp->hook.secid_to_secctx( |
2472 | blob->secid[hp->lsmid->slot], | |
62e4d84c CS |
2473 | &cp->context, &cp->len); |
2474 | } | |
0550cfe8 KS |
2475 | } |
2476 | ||
2477 | return LSM_RET_DEFAULT(secid_to_secctx); | |
20510f2f JM |
2478 | } |
2479 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2480 | ||
c0792283 CS |
2481 | int security_secctx_to_secid(const char *secdata, u32 seclen, |
2482 | struct lsmblob *blob) | |
63cb3449 | 2483 | { |
c0792283 | 2484 | struct security_hook_list *hp; |
6afcff0a | 2485 | int display = lsm_task_display(current); |
c0792283 CS |
2486 | |
2487 | lsmblob_init(blob, 0); | |
2488 | hlist_for_each_entry(hp, &security_hook_heads.secctx_to_secid, list) { | |
2489 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2490 | continue; | |
6afcff0a CS |
2491 | if (display == LSMBLOB_INVALID || display == hp->lsmid->slot) |
2492 | return hp->hook.secctx_to_secid(secdata, seclen, | |
2493 | &blob->secid[hp->lsmid->slot]); | |
c0792283 | 2494 | } |
85ff5379 | 2495 | return -EOPNOTSUPP; |
63cb3449 DH |
2496 | } |
2497 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2498 | ||
b1393bc0 | 2499 | void security_release_secctx(struct lsmcontext *cp) |
20510f2f | 2500 | { |
6afcff0a | 2501 | struct security_hook_list *hp; |
6afcff0a CS |
2502 | |
2503 | hlist_for_each_entry(hp, &security_hook_heads.release_secctx, list) | |
b1393bc0 CS |
2504 | if (cp->slot == hp->lsmid->slot) { |
2505 | hp->hook.release_secctx(cp->context, cp->len); | |
2506 | break; | |
6afcff0a | 2507 | } |
b1393bc0 CS |
2508 | |
2509 | memset(cp, 0, sizeof(*cp)); | |
20510f2f JM |
2510 | } |
2511 | EXPORT_SYMBOL(security_release_secctx); | |
2512 | ||
6f3be9f5 AG |
2513 | void security_inode_invalidate_secctx(struct inode *inode) |
2514 | { | |
2515 | call_void_hook(inode_invalidate_secctx, inode); | |
2516 | } | |
2517 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2518 | ||
1ee65e37 DQ |
2519 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2520 | { | |
f25fce3e | 2521 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2522 | } |
2523 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2524 | ||
2525 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2526 | { | |
f25fce3e | 2527 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2528 | } |
2529 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2530 | ||
1013a233 | 2531 | int security_inode_getsecctx(struct inode *inode, struct lsmcontext *cp) |
1ee65e37 | 2532 | { |
1013a233 CS |
2533 | struct security_hook_list *hp; |
2534 | ||
2535 | memset(cp, 0, sizeof(*cp)); | |
2536 | ||
2537 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecctx, list) { | |
2538 | cp->slot = hp->lsmid->slot; | |
2539 | return hp->hook.inode_getsecctx(inode, (void **)&cp->context, | |
2540 | &cp->len); | |
2541 | } | |
2542 | return -EOPNOTSUPP; | |
1ee65e37 DQ |
2543 | } |
2544 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2545 | ||
344fa64e DH |
2546 | #ifdef CONFIG_WATCH_QUEUE |
2547 | int security_post_notification(const struct cred *w_cred, | |
2548 | const struct cred *cred, | |
2549 | struct watch_notification *n) | |
2550 | { | |
2551 | return call_int_hook(post_notification, 0, w_cred, cred, n); | |
2552 | } | |
2553 | #endif /* CONFIG_WATCH_QUEUE */ | |
2554 | ||
998f5040 DH |
2555 | #ifdef CONFIG_KEY_NOTIFICATIONS |
2556 | int security_watch_key(struct key *key) | |
2557 | { | |
2558 | return call_int_hook(watch_key, 0, key); | |
2559 | } | |
2560 | #endif | |
2561 | ||
20510f2f JM |
2562 | #ifdef CONFIG_SECURITY_NETWORK |
2563 | ||
3610cda5 | 2564 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2565 | { |
f25fce3e | 2566 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2567 | } |
2568 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2569 | ||
2570 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2571 | { | |
f25fce3e | 2572 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2573 | } |
2574 | EXPORT_SYMBOL(security_unix_may_send); | |
2575 | ||
2576 | int security_socket_create(int family, int type, int protocol, int kern) | |
2577 | { | |
f25fce3e | 2578 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2579 | } |
2580 | ||
2581 | int security_socket_post_create(struct socket *sock, int family, | |
2582 | int type, int protocol, int kern) | |
2583 | { | |
f25fce3e | 2584 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2585 | protocol, kern); |
2586 | } | |
2587 | ||
aae7cfcb DH |
2588 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
2589 | { | |
2590 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
2591 | } | |
2592 | EXPORT_SYMBOL(security_socket_socketpair); | |
2593 | ||
20510f2f JM |
2594 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
2595 | { | |
f25fce3e | 2596 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2597 | } |
2598 | ||
2599 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2600 | { | |
f25fce3e | 2601 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2602 | } |
2603 | ||
2604 | int security_socket_listen(struct socket *sock, int backlog) | |
2605 | { | |
f25fce3e | 2606 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2607 | } |
2608 | ||
2609 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2610 | { | |
f25fce3e | 2611 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2612 | } |
2613 | ||
20510f2f JM |
2614 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2615 | { | |
f25fce3e | 2616 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2617 | } |
2618 | ||
2619 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2620 | int size, int flags) | |
2621 | { | |
f25fce3e | 2622 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2623 | } |
2624 | ||
2625 | int security_socket_getsockname(struct socket *sock) | |
2626 | { | |
f25fce3e | 2627 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2628 | } |
2629 | ||
2630 | int security_socket_getpeername(struct socket *sock) | |
2631 | { | |
f25fce3e | 2632 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2633 | } |
2634 | ||
2635 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2636 | { | |
f25fce3e | 2637 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2638 | } |
2639 | ||
2640 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2641 | { | |
f25fce3e | 2642 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2643 | } |
2644 | ||
2645 | int security_socket_shutdown(struct socket *sock, int how) | |
2646 | { | |
f25fce3e | 2647 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2648 | } |
2649 | ||
2650 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2651 | { | |
f25fce3e | 2652 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2653 | } |
2654 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2655 | ||
2656 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2657 | int __user *optlen, unsigned len) | |
2658 | { | |
6afcff0a CS |
2659 | int display = lsm_task_display(current); |
2660 | struct security_hook_list *hp; | |
2661 | ||
2662 | hlist_for_each_entry(hp, &security_hook_heads.socket_getpeersec_stream, | |
2663 | list) | |
2664 | if (display == LSMBLOB_INVALID || display == hp->lsmid->slot) | |
2665 | return hp->hook.socket_getpeersec_stream(sock, optval, | |
2666 | optlen, len); | |
2667 | return -ENOPROTOOPT; | |
20510f2f JM |
2668 | } |
2669 | ||
3d328ede CS |
2670 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, |
2671 | struct lsmblob *blob) | |
20510f2f | 2672 | { |
3d328ede CS |
2673 | struct security_hook_list *hp; |
2674 | int rc = -ENOPROTOOPT; | |
2675 | ||
2676 | hlist_for_each_entry(hp, &security_hook_heads.socket_getpeersec_dgram, | |
2677 | list) { | |
2678 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2679 | continue; | |
2680 | rc = hp->hook.socket_getpeersec_dgram(sock, skb, | |
2681 | &blob->secid[hp->lsmid->slot]); | |
2682 | if (rc != 0) | |
2683 | break; | |
2684 | } | |
2685 | return rc; | |
20510f2f JM |
2686 | } |
2687 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2688 | ||
2689 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2690 | { | |
12ddb08a CS |
2691 | int rc = lsm_sock_alloc(sk, priority); |
2692 | ||
2693 | if (unlikely(rc)) | |
2694 | return rc; | |
2695 | rc = call_int_hook(sk_alloc_security, 0, sk, family, priority); | |
2696 | if (unlikely(rc)) | |
2697 | security_sk_free(sk); | |
2698 | return rc; | |
20510f2f JM |
2699 | } |
2700 | ||
2701 | void security_sk_free(struct sock *sk) | |
2702 | { | |
f25fce3e | 2703 | call_void_hook(sk_free_security, sk); |
12ddb08a CS |
2704 | kfree(sk->sk_security); |
2705 | sk->sk_security = NULL; | |
20510f2f JM |
2706 | } |
2707 | ||
2708 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2709 | { | |
f25fce3e | 2710 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2711 | } |
6230c9b4 | 2712 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f | 2713 | |
3df98d79 | 2714 | void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic) |
20510f2f | 2715 | { |
3df98d79 | 2716 | call_void_hook(sk_getsecid, sk, &flic->flowic_secid); |
20510f2f JM |
2717 | } |
2718 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2719 | ||
3df98d79 PM |
2720 | void security_req_classify_flow(const struct request_sock *req, |
2721 | struct flowi_common *flic) | |
20510f2f | 2722 | { |
3df98d79 | 2723 | call_void_hook(req_classify_flow, req, flic); |
20510f2f JM |
2724 | } |
2725 | EXPORT_SYMBOL(security_req_classify_flow); | |
2726 | ||
2727 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2728 | { | |
f25fce3e | 2729 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2730 | } |
2731 | EXPORT_SYMBOL(security_sock_graft); | |
2732 | ||
41dd9596 | 2733 | int security_inet_conn_request(const struct sock *sk, |
20510f2f JM |
2734 | struct sk_buff *skb, struct request_sock *req) |
2735 | { | |
f25fce3e | 2736 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2737 | } |
2738 | EXPORT_SYMBOL(security_inet_conn_request); | |
2739 | ||
2740 | void security_inet_csk_clone(struct sock *newsk, | |
2741 | const struct request_sock *req) | |
2742 | { | |
f25fce3e | 2743 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2744 | } |
2745 | ||
2746 | void security_inet_conn_established(struct sock *sk, | |
2747 | struct sk_buff *skb) | |
2748 | { | |
f25fce3e | 2749 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2750 | } |
72e89f50 | 2751 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2752 | |
c0792283 | 2753 | int security_secmark_relabel_packet(struct lsmblob *blob) |
2606fd1f | 2754 | { |
c0792283 CS |
2755 | struct security_hook_list *hp; |
2756 | int rc = 0; | |
2757 | ||
2758 | hlist_for_each_entry(hp, &security_hook_heads.secmark_relabel_packet, | |
2759 | list) { | |
2760 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
2761 | continue; | |
2762 | rc = hp->hook.secmark_relabel_packet( | |
2763 | blob->secid[hp->lsmid->slot]); | |
2764 | if (rc != 0) | |
2765 | break; | |
2766 | } | |
2767 | return rc; | |
2606fd1f EP |
2768 | } |
2769 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2770 | ||
2771 | void security_secmark_refcount_inc(void) | |
2772 | { | |
f25fce3e | 2773 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2774 | } |
2775 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2776 | ||
2777 | void security_secmark_refcount_dec(void) | |
2778 | { | |
f25fce3e | 2779 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2780 | } |
2781 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2782 | ||
5dbbaf2d PM |
2783 | int security_tun_dev_alloc_security(void **security) |
2784 | { | |
f25fce3e | 2785 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2786 | } |
2787 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2788 | ||
2789 | void security_tun_dev_free_security(void *security) | |
2790 | { | |
f25fce3e | 2791 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2792 | } |
2793 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2794 | ||
2b980dbd PM |
2795 | int security_tun_dev_create(void) |
2796 | { | |
f25fce3e | 2797 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2798 | } |
2799 | EXPORT_SYMBOL(security_tun_dev_create); | |
2800 | ||
5dbbaf2d | 2801 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2802 | { |
f25fce3e | 2803 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2804 | } |
5dbbaf2d | 2805 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2806 | |
5dbbaf2d | 2807 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2808 | { |
f25fce3e | 2809 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2810 | } |
2811 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2812 | ||
5dbbaf2d PM |
2813 | int security_tun_dev_open(void *security) |
2814 | { | |
f25fce3e | 2815 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2816 | } |
2817 | EXPORT_SYMBOL(security_tun_dev_open); | |
2818 | ||
72e89f50 RH |
2819 | int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb) |
2820 | { | |
2821 | return call_int_hook(sctp_assoc_request, 0, ep, skb); | |
2822 | } | |
2823 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2824 | ||
2825 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2826 | struct sockaddr *address, int addrlen) | |
2827 | { | |
2828 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2829 | address, addrlen); | |
2830 | } | |
2831 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2832 | ||
2833 | void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk, | |
2834 | struct sock *newsk) | |
2835 | { | |
2836 | call_void_hook(sctp_sk_clone, ep, sk, newsk); | |
2837 | } | |
2838 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2839 | ||
20510f2f JM |
2840 | #endif /* CONFIG_SECURITY_NETWORK */ |
2841 | ||
d291f1a6 DJ |
2842 | #ifdef CONFIG_SECURITY_INFINIBAND |
2843 | ||
2844 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2845 | { | |
2846 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2847 | } | |
2848 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2849 | ||
47a2b338 DJ |
2850 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2851 | { | |
2852 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2853 | } | |
2854 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2855 | ||
d291f1a6 DJ |
2856 | int security_ib_alloc_security(void **sec) |
2857 | { | |
2858 | return call_int_hook(ib_alloc_security, 0, sec); | |
2859 | } | |
2860 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2861 | ||
2862 | void security_ib_free_security(void *sec) | |
2863 | { | |
2864 | call_void_hook(ib_free_security, sec); | |
2865 | } | |
2866 | EXPORT_SYMBOL(security_ib_free_security); | |
2867 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2868 | ||
20510f2f JM |
2869 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2870 | ||
52a4c640 NA |
2871 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2872 | struct xfrm_user_sec_ctx *sec_ctx, | |
2873 | gfp_t gfp) | |
20510f2f | 2874 | { |
f25fce3e | 2875 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2876 | } |
2877 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2878 | ||
03e1ad7b PM |
2879 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2880 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2881 | { |
f25fce3e | 2882 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2883 | } |
2884 | ||
03e1ad7b | 2885 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2886 | { |
f25fce3e | 2887 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2888 | } |
2889 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2890 | ||
03e1ad7b | 2891 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2892 | { |
f25fce3e | 2893 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2894 | } |
2895 | ||
2e5aa866 PM |
2896 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2897 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2898 | { |
f25fce3e | 2899 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2900 | } |
2901 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2902 | ||
2903 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2904 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2905 | { | |
f25fce3e | 2906 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2907 | } |
2908 | ||
2909 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2910 | { | |
f25fce3e | 2911 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2912 | } |
2913 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2914 | ||
2915 | void security_xfrm_state_free(struct xfrm_state *x) | |
2916 | { | |
f25fce3e | 2917 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2918 | } |
2919 | ||
8a922805 | 2920 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) |
20510f2f | 2921 | { |
8a922805 | 2922 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid); |
20510f2f JM |
2923 | } |
2924 | ||
2925 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 | 2926 | struct xfrm_policy *xp, |
3df98d79 | 2927 | const struct flowi_common *flic) |
20510f2f | 2928 | { |
b1d9e6b0 | 2929 | struct security_hook_list *hp; |
98e828a0 | 2930 | int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match); |
b1d9e6b0 CS |
2931 | |
2932 | /* | |
2933 | * Since this function is expected to return 0 or 1, the judgment | |
2934 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2935 | * we can use the first LSM's judgment because currently only SELinux | |
2936 | * supplies this call. | |
2937 | * | |
2938 | * For speed optimization, we explicitly break the loop rather than | |
2939 | * using the macro | |
2940 | */ | |
df0ce173 | 2941 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 | 2942 | list) { |
3df98d79 | 2943 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic); |
b1d9e6b0 CS |
2944 | break; |
2945 | } | |
2946 | return rc; | |
20510f2f JM |
2947 | } |
2948 | ||
2949 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2950 | { | |
f25fce3e | 2951 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2952 | } |
2953 | ||
3df98d79 | 2954 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic) |
20510f2f | 2955 | { |
3df98d79 | 2956 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid, |
f25fce3e | 2957 | 0); |
20510f2f JM |
2958 | |
2959 | BUG_ON(rc); | |
2960 | } | |
2961 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2962 | ||
2963 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2964 | ||
2965 | #ifdef CONFIG_KEYS | |
2966 | ||
d84f4f99 DH |
2967 | int security_key_alloc(struct key *key, const struct cred *cred, |
2968 | unsigned long flags) | |
20510f2f | 2969 | { |
f25fce3e | 2970 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2971 | } |
2972 | ||
2973 | void security_key_free(struct key *key) | |
2974 | { | |
f25fce3e | 2975 | call_void_hook(key_free, key); |
20510f2f JM |
2976 | } |
2977 | ||
8c0637e9 DH |
2978 | int security_key_permission(key_ref_t key_ref, const struct cred *cred, |
2979 | enum key_need_perm need_perm) | |
20510f2f | 2980 | { |
8c0637e9 | 2981 | return call_int_hook(key_permission, 0, key_ref, cred, need_perm); |
20510f2f JM |
2982 | } |
2983 | ||
70a5bb72 DH |
2984 | int security_key_getsecurity(struct key *key, char **_buffer) |
2985 | { | |
b1d9e6b0 | 2986 | *_buffer = NULL; |
f25fce3e | 2987 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2988 | } |
2989 | ||
20510f2f | 2990 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2991 | |
2992 | #ifdef CONFIG_AUDIT | |
2993 | ||
2994 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2995 | { | |
f17b27a2 | 2996 | struct security_hook_list *hp; |
85ff5379 | 2997 | int display = lsm_task_display(current); |
f17b27a2 CS |
2998 | |
2999 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_init, list) { | |
3000 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
3001 | continue; | |
85ff5379 CS |
3002 | if (display != LSMBLOB_INVALID && display != hp->lsmid->slot) |
3003 | continue; | |
3004 | return hp->hook.audit_rule_init(field, op, rulestr, | |
3005 | &lsmrule[hp->lsmid->slot]); | |
f17b27a2 | 3006 | } |
85ff5379 | 3007 | return 0; |
03d37d25 AD |
3008 | } |
3009 | ||
3010 | int security_audit_rule_known(struct audit_krule *krule) | |
3011 | { | |
f25fce3e | 3012 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
3013 | } |
3014 | ||
f17b27a2 | 3015 | void security_audit_rule_free(void **lsmrule) |
03d37d25 | 3016 | { |
f17b27a2 CS |
3017 | struct security_hook_list *hp; |
3018 | ||
3019 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_free, list) { | |
3020 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
3021 | continue; | |
eb182194 CS |
3022 | if (lsmrule[hp->lsmid->slot] == NULL) |
3023 | continue; | |
f17b27a2 CS |
3024 | hp->hook.audit_rule_free(lsmrule[hp->lsmid->slot]); |
3025 | } | |
03d37d25 AD |
3026 | } |
3027 | ||
eb182194 CS |
3028 | int security_audit_rule_match(struct lsmblob *blob, u32 field, u32 op, |
3029 | void **lsmrule) | |
03d37d25 | 3030 | { |
f17b27a2 CS |
3031 | struct security_hook_list *hp; |
3032 | int rc; | |
3033 | ||
3034 | hlist_for_each_entry(hp, &security_hook_heads.audit_rule_match, list) { | |
3035 | if (WARN_ON(hp->lsmid->slot < 0 || hp->lsmid->slot >= lsm_slot)) | |
3036 | continue; | |
eb182194 CS |
3037 | if (lsmrule[hp->lsmid->slot] == NULL) |
3038 | continue; | |
85ff5379 CS |
3039 | if (lsmrule[hp->lsmid->slot] == NULL) |
3040 | continue; | |
eb182194 CS |
3041 | rc = hp->hook.audit_rule_match(blob->secid[hp->lsmid->slot], |
3042 | field, op, | |
f17b27a2 CS |
3043 | &lsmrule[hp->lsmid->slot]); |
3044 | if (rc) | |
3045 | return rc; | |
3046 | } | |
3047 | return 0; | |
03d37d25 | 3048 | } |
b1d9e6b0 | 3049 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
3050 | |
3051 | #ifdef CONFIG_BPF_SYSCALL | |
3052 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
3053 | { | |
3054 | return call_int_hook(bpf, 0, cmd, attr, size); | |
3055 | } | |
3056 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
3057 | { | |
3058 | return call_int_hook(bpf_map, 0, map, fmode); | |
3059 | } | |
3060 | int security_bpf_prog(struct bpf_prog *prog) | |
3061 | { | |
3062 | return call_int_hook(bpf_prog, 0, prog); | |
3063 | } | |
3064 | int security_bpf_map_alloc(struct bpf_map *map) | |
3065 | { | |
3066 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
3067 | } | |
3068 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
3069 | { | |
3070 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
3071 | } | |
3072 | void security_bpf_map_free(struct bpf_map *map) | |
3073 | { | |
3074 | call_void_hook(bpf_map_free_security, map); | |
3075 | } | |
3076 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
3077 | { | |
3078 | call_void_hook(bpf_prog_free_security, aux); | |
3079 | } | |
3080 | #endif /* CONFIG_BPF_SYSCALL */ | |
9e47d31d MG |
3081 | |
3082 | int security_locked_down(enum lockdown_reason what) | |
3083 | { | |
3084 | return call_int_hook(locked_down, 0, what); | |
3085 | } | |
3086 | EXPORT_SYMBOL(security_locked_down); | |
da97e184 | 3087 | |
df8b9262 JC |
3088 | int security_lock_kernel_down(const char *where, enum lockdown_reason level) |
3089 | { | |
3090 | return call_int_hook(lock_kernel_down, 0, where, level); | |
3091 | } | |
3092 | EXPORT_SYMBOL(security_lock_kernel_down); | |
3093 | ||
da97e184 JFG |
3094 | #ifdef CONFIG_PERF_EVENTS |
3095 | int security_perf_event_open(struct perf_event_attr *attr, int type) | |
3096 | { | |
3097 | return call_int_hook(perf_event_open, 0, attr, type); | |
3098 | } | |
3099 | ||
3100 | int security_perf_event_alloc(struct perf_event *event) | |
3101 | { | |
3102 | return call_int_hook(perf_event_alloc, 0, event); | |
3103 | } | |
3104 | ||
3105 | void security_perf_event_free(struct perf_event *event) | |
3106 | { | |
3107 | call_void_hook(perf_event_free, event); | |
3108 | } | |
3109 | ||
3110 | int security_perf_event_read(struct perf_event *event) | |
3111 | { | |
3112 | return call_int_hook(perf_event_read, 0, event); | |
3113 | } | |
3114 | ||
3115 | int security_perf_event_write(struct perf_event *event) | |
3116 | { | |
3117 | return call_int_hook(perf_event_write, 0, event); | |
3118 | } | |
3119 | #endif /* CONFIG_PERF_EVENTS */ |