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2874c5fd | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
1da177e4 LT |
2 | /* |
3 | * Security plug functions | |
4 | * | |
5 | * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> | |
6 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
7 | * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> | |
d291f1a6 | 8 | * Copyright (C) 2016 Mellanox Technologies |
1da177e4 LT |
9 | */ |
10 | ||
9b8c7c14 KC |
11 | #define pr_fmt(fmt) "LSM: " fmt |
12 | ||
afdb09c7 | 13 | #include <linux/bpf.h> |
c59ede7b | 14 | #include <linux/capability.h> |
d47be3df | 15 | #include <linux/dcache.h> |
876979c9 | 16 | #include <linux/export.h> |
1da177e4 LT |
17 | #include <linux/init.h> |
18 | #include <linux/kernel.h> | |
b89999d0 | 19 | #include <linux/kernel_read_file.h> |
3c4ed7bd | 20 | #include <linux/lsm_hooks.h> |
f381c272 | 21 | #include <linux/integrity.h> |
6c21a7fb | 22 | #include <linux/ima.h> |
3e1be52d | 23 | #include <linux/evm.h> |
40401530 | 24 | #include <linux/fsnotify.h> |
8b3ec681 AV |
25 | #include <linux/mman.h> |
26 | #include <linux/mount.h> | |
27 | #include <linux/personality.h> | |
75331a59 | 28 | #include <linux/backing-dev.h> |
3bb857e4 | 29 | #include <linux/string.h> |
ecd5f82e | 30 | #include <linux/msg.h> |
40401530 | 31 | #include <net/flow.h> |
1da177e4 | 32 | |
823eb1cc | 33 | #define MAX_LSM_EVM_XATTR 2 |
1da177e4 | 34 | |
2d4d5119 KC |
35 | /* How many LSMs were built into the kernel? */ |
36 | #define LSM_COUNT (__end_lsm_info - __start_lsm_info) | |
37 | ||
59438b46 SS |
38 | /* |
39 | * These are descriptions of the reasons that can be passed to the | |
40 | * security_locked_down() LSM hook. Placing this array here allows | |
41 | * all security modules to use the same descriptions for auditing | |
42 | * purposes. | |
43 | */ | |
44 | const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1] = { | |
45 | [LOCKDOWN_NONE] = "none", | |
46 | [LOCKDOWN_MODULE_SIGNATURE] = "unsigned module loading", | |
47 | [LOCKDOWN_DEV_MEM] = "/dev/mem,kmem,port", | |
48 | [LOCKDOWN_EFI_TEST] = "/dev/efi_test access", | |
49 | [LOCKDOWN_KEXEC] = "kexec of unsigned images", | |
50 | [LOCKDOWN_HIBERNATION] = "hibernation", | |
51 | [LOCKDOWN_PCI_ACCESS] = "direct PCI access", | |
52 | [LOCKDOWN_IOPORT] = "raw io port access", | |
53 | [LOCKDOWN_MSR] = "raw MSR access", | |
54 | [LOCKDOWN_ACPI_TABLES] = "modifying ACPI tables", | |
99df7a28 | 55 | [LOCKDOWN_DEVICE_TREE] = "modifying device tree contents", |
59438b46 SS |
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", |
eadb2f47 | 63 | [LOCKDOWN_DBG_WRITE_KERNEL] = "use of kgdb/kdb to write kernel RAM", |
b8f3e488 | 64 | [LOCKDOWN_RTAS_ERROR_INJECTION] = "RTAS error injection", |
59438b46 SS |
65 | [LOCKDOWN_INTEGRITY_MAX] = "integrity", |
66 | [LOCKDOWN_KCORE] = "/proc/kcore access", | |
67 | [LOCKDOWN_KPROBES] = "use of kprobes", | |
71330842 | 68 | [LOCKDOWN_BPF_READ_KERNEL] = "use of bpf to read kernel RAM", |
eadb2f47 | 69 | [LOCKDOWN_DBG_READ_KERNEL] = "use of kgdb/kdb to read kernel RAM", |
59438b46 SS |
70 | [LOCKDOWN_PERF] = "unsafe use of perf", |
71 | [LOCKDOWN_TRACEFS] = "use of tracefs", | |
72 | [LOCKDOWN_XMON_RW] = "xmon read and write access", | |
c7a5899e | 73 | [LOCKDOWN_XFRM_SECRET] = "xfrm SA secret", |
59438b46 SS |
74 | [LOCKDOWN_CONFIDENTIALITY_MAX] = "confidentiality", |
75 | }; | |
76 | ||
3dfc9b02 | 77 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; |
42df744c | 78 | static BLOCKING_NOTIFIER_HEAD(blocking_lsm_notifier_chain); |
8f408ab6 | 79 | |
33bf60ca | 80 | static struct kmem_cache *lsm_file_cache; |
afb1cbe3 | 81 | static struct kmem_cache *lsm_inode_cache; |
33bf60ca | 82 | |
d69dece5 | 83 | char *lsm_names; |
bbd3662a CS |
84 | static struct lsm_blob_sizes blob_sizes __lsm_ro_after_init; |
85 | ||
076c54c5 | 86 | /* Boot-time LSM user choice */ |
79f7865d | 87 | static __initdata const char *chosen_lsm_order; |
5ef4e419 | 88 | static __initdata const char *chosen_major_lsm; |
1da177e4 | 89 | |
13e735c0 KC |
90 | static __initconst const char * const builtin_lsm_order = CONFIG_LSM; |
91 | ||
2d4d5119 KC |
92 | /* Ordered list of LSMs to initialize. */ |
93 | static __initdata struct lsm_info **ordered_lsms; | |
14bd99c8 | 94 | static __initdata struct lsm_info *exclusive; |
2d4d5119 | 95 | |
9b8c7c14 KC |
96 | static __initdata bool debug; |
97 | #define init_debug(...) \ | |
98 | do { \ | |
99 | if (debug) \ | |
100 | pr_info(__VA_ARGS__); \ | |
101 | } while (0) | |
102 | ||
f4941d75 KC |
103 | static bool __init is_enabled(struct lsm_info *lsm) |
104 | { | |
a8027fb0 KC |
105 | if (!lsm->enabled) |
106 | return false; | |
f4941d75 | 107 | |
a8027fb0 | 108 | return *lsm->enabled; |
f4941d75 KC |
109 | } |
110 | ||
111 | /* Mark an LSM's enabled flag. */ | |
112 | static int lsm_enabled_true __initdata = 1; | |
113 | static int lsm_enabled_false __initdata = 0; | |
114 | static void __init set_enabled(struct lsm_info *lsm, bool enabled) | |
115 | { | |
116 | /* | |
117 | * When an LSM hasn't configured an enable variable, we can use | |
118 | * a hard-coded location for storing the default enabled state. | |
119 | */ | |
120 | if (!lsm->enabled) { | |
121 | if (enabled) | |
122 | lsm->enabled = &lsm_enabled_true; | |
123 | else | |
124 | lsm->enabled = &lsm_enabled_false; | |
125 | } else if (lsm->enabled == &lsm_enabled_true) { | |
126 | if (!enabled) | |
127 | lsm->enabled = &lsm_enabled_false; | |
128 | } else if (lsm->enabled == &lsm_enabled_false) { | |
129 | if (enabled) | |
130 | lsm->enabled = &lsm_enabled_true; | |
131 | } else { | |
132 | *lsm->enabled = enabled; | |
133 | } | |
134 | } | |
135 | ||
2d4d5119 KC |
136 | /* Is an LSM already listed in the ordered LSMs list? */ |
137 | static bool __init exists_ordered_lsm(struct lsm_info *lsm) | |
138 | { | |
139 | struct lsm_info **check; | |
140 | ||
141 | for (check = ordered_lsms; *check; check++) | |
142 | if (*check == lsm) | |
143 | return true; | |
144 | ||
145 | return false; | |
146 | } | |
147 | ||
148 | /* Append an LSM to the list of ordered LSMs to initialize. */ | |
149 | static int last_lsm __initdata; | |
150 | static void __init append_ordered_lsm(struct lsm_info *lsm, const char *from) | |
151 | { | |
152 | /* Ignore duplicate selections. */ | |
153 | if (exists_ordered_lsm(lsm)) | |
154 | return; | |
155 | ||
156 | if (WARN(last_lsm == LSM_COUNT, "%s: out of LSM slots!?\n", from)) | |
157 | return; | |
158 | ||
a8027fb0 KC |
159 | /* Enable this LSM, if it is not already set. */ |
160 | if (!lsm->enabled) | |
161 | lsm->enabled = &lsm_enabled_true; | |
2d4d5119 | 162 | ordered_lsms[last_lsm++] = lsm; |
a8027fb0 | 163 | |
2d4d5119 KC |
164 | init_debug("%s ordering: %s (%sabled)\n", from, lsm->name, |
165 | is_enabled(lsm) ? "en" : "dis"); | |
166 | } | |
167 | ||
f4941d75 KC |
168 | /* Is an LSM allowed to be initialized? */ |
169 | static bool __init lsm_allowed(struct lsm_info *lsm) | |
170 | { | |
171 | /* Skip if the LSM is disabled. */ | |
172 | if (!is_enabled(lsm)) | |
173 | return false; | |
174 | ||
14bd99c8 KC |
175 | /* Not allowed if another exclusive LSM already initialized. */ |
176 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && exclusive) { | |
177 | init_debug("exclusive disabled: %s\n", lsm->name); | |
178 | return false; | |
179 | } | |
180 | ||
f4941d75 KC |
181 | return true; |
182 | } | |
183 | ||
bbd3662a CS |
184 | static void __init lsm_set_blob_size(int *need, int *lbs) |
185 | { | |
186 | int offset; | |
187 | ||
188 | if (*need > 0) { | |
189 | offset = *lbs; | |
190 | *lbs += *need; | |
191 | *need = offset; | |
192 | } | |
193 | } | |
194 | ||
195 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
196 | { | |
197 | if (!needed) | |
198 | return; | |
199 | ||
200 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 201 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
202 | /* |
203 | * The inode blob gets an rcu_head in addition to | |
204 | * what the modules might need. | |
205 | */ | |
206 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
207 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
208 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
209 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
210 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
1aea7808 | 211 | lsm_set_blob_size(&needed->lbs_superblock, &blob_sizes.lbs_superblock); |
f4ad8f2c | 212 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
213 | } |
214 | ||
d8e9bbd4 KC |
215 | /* Prepare LSM for initialization. */ |
216 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
217 | { |
218 | int enabled = lsm_allowed(lsm); | |
219 | ||
220 | /* Record enablement (to handle any following exclusive LSMs). */ | |
221 | set_enabled(lsm, enabled); | |
222 | ||
d8e9bbd4 | 223 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 224 | if (enabled) { |
14bd99c8 KC |
225 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
226 | exclusive = lsm; | |
227 | init_debug("exclusive chosen: %s\n", lsm->name); | |
228 | } | |
bbd3662a CS |
229 | |
230 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
231 | } |
232 | } | |
233 | ||
234 | /* Initialize a given LSM, if it is enabled. */ | |
235 | static void __init initialize_lsm(struct lsm_info *lsm) | |
236 | { | |
237 | if (is_enabled(lsm)) { | |
238 | int ret; | |
14bd99c8 | 239 | |
f4941d75 KC |
240 | init_debug("initializing %s\n", lsm->name); |
241 | ret = lsm->init(); | |
242 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
243 | } | |
244 | } | |
245 | ||
13e735c0 | 246 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 247 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
248 | { |
249 | struct lsm_info *lsm; | |
13e735c0 KC |
250 | char *sep, *name, *next; |
251 | ||
e2bc445b KC |
252 | /* LSM_ORDER_FIRST is always first. */ |
253 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
254 | if (lsm->order == LSM_ORDER_FIRST) | |
255 | append_ordered_lsm(lsm, "first"); | |
256 | } | |
257 | ||
7e611486 | 258 | /* Process "security=", if given. */ |
7e611486 KC |
259 | if (chosen_major_lsm) { |
260 | struct lsm_info *major; | |
261 | ||
262 | /* | |
263 | * To match the original "security=" behavior, this | |
264 | * explicitly does NOT fallback to another Legacy Major | |
265 | * if the selected one was separately disabled: disable | |
266 | * all non-matching Legacy Major LSMs. | |
267 | */ | |
268 | for (major = __start_lsm_info; major < __end_lsm_info; | |
269 | major++) { | |
270 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
271 | strcmp(major->name, chosen_major_lsm) != 0) { | |
272 | set_enabled(major, false); | |
273 | init_debug("security=%s disabled: %s\n", | |
274 | chosen_major_lsm, major->name); | |
275 | } | |
276 | } | |
277 | } | |
5ef4e419 | 278 | |
13e735c0 KC |
279 | sep = kstrdup(order, GFP_KERNEL); |
280 | next = sep; | |
281 | /* Walk the list, looking for matching LSMs. */ | |
282 | while ((name = strsep(&next, ",")) != NULL) { | |
283 | bool found = false; | |
284 | ||
285 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
286 | if (lsm->order == LSM_ORDER_MUTABLE && |
287 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
288 | append_ordered_lsm(lsm, origin); |
289 | found = true; | |
290 | } | |
291 | } | |
292 | ||
293 | if (!found) | |
294 | init_debug("%s ignored: %s\n", origin, name); | |
657d910b | 295 | } |
c91d8106 CS |
296 | |
297 | /* Process "security=", if given. */ | |
298 | if (chosen_major_lsm) { | |
299 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
300 | if (exists_ordered_lsm(lsm)) | |
301 | continue; | |
302 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
303 | append_ordered_lsm(lsm, "security="); | |
304 | } | |
305 | } | |
306 | ||
307 | /* Disable all LSMs not in the ordered list. */ | |
308 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
309 | if (exists_ordered_lsm(lsm)) | |
310 | continue; | |
311 | set_enabled(lsm, false); | |
312 | init_debug("%s disabled: %s\n", origin, lsm->name); | |
313 | } | |
314 | ||
13e735c0 | 315 | kfree(sep); |
657d910b KC |
316 | } |
317 | ||
1cfb2a51 TH |
318 | static void __init lsm_early_cred(struct cred *cred); |
319 | static void __init lsm_early_task(struct task_struct *task); | |
320 | ||
e6b1db98 MG |
321 | static int lsm_append(const char *new, char **result); |
322 | ||
2d4d5119 KC |
323 | static void __init ordered_lsm_init(void) |
324 | { | |
325 | struct lsm_info **lsm; | |
326 | ||
327 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
328 | GFP_KERNEL); | |
329 | ||
89a9684e KC |
330 | if (chosen_lsm_order) { |
331 | if (chosen_major_lsm) { | |
332 | pr_info("security= is ignored because it is superseded by lsm=\n"); | |
333 | chosen_major_lsm = NULL; | |
334 | } | |
79f7865d | 335 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 336 | } else |
79f7865d | 337 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
338 | |
339 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
340 | prepare_lsm(*lsm); |
341 | ||
1aea7808 CS |
342 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
343 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); | |
344 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); | |
345 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); | |
346 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
347 | init_debug("superblock blob size = %d\n", blob_sizes.lbs_superblock); | |
348 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); | |
33bf60ca CS |
349 | |
350 | /* | |
351 | * Create any kmem_caches needed for blobs | |
352 | */ | |
353 | if (blob_sizes.lbs_file) | |
354 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
355 | blob_sizes.lbs_file, 0, | |
356 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
357 | if (blob_sizes.lbs_inode) |
358 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
359 | blob_sizes.lbs_inode, 0, | |
360 | SLAB_PANIC, NULL); | |
bbd3662a | 361 | |
1cfb2a51 TH |
362 | lsm_early_cred((struct cred *) current->cred); |
363 | lsm_early_task(current); | |
d8e9bbd4 KC |
364 | for (lsm = ordered_lsms; *lsm; lsm++) |
365 | initialize_lsm(*lsm); | |
2d4d5119 KC |
366 | |
367 | kfree(ordered_lsms); | |
368 | } | |
369 | ||
e6b1db98 MG |
370 | int __init early_security_init(void) |
371 | { | |
e6b1db98 MG |
372 | struct lsm_info *lsm; |
373 | ||
75c1182e BW |
374 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ |
375 | INIT_HLIST_HEAD(&security_hook_heads.NAME); | |
376 | #include "linux/lsm_hook_defs.h" | |
377 | #undef LSM_HOOK | |
e6b1db98 MG |
378 | |
379 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
380 | if (!lsm->enabled) | |
381 | lsm->enabled = &lsm_enabled_true; | |
382 | prepare_lsm(lsm); | |
383 | initialize_lsm(lsm); | |
384 | } | |
385 | ||
386 | return 0; | |
387 | } | |
388 | ||
1da177e4 LT |
389 | /** |
390 | * security_init - initializes the security framework | |
391 | * | |
392 | * This should be called early in the kernel initialization sequence. | |
393 | */ | |
394 | int __init security_init(void) | |
395 | { | |
e6b1db98 | 396 | struct lsm_info *lsm; |
3dfc9b02 | 397 | |
98d29170 KC |
398 | pr_info("Security Framework initializing\n"); |
399 | ||
e6b1db98 MG |
400 | /* |
401 | * Append the names of the early LSM modules now that kmalloc() is | |
402 | * available | |
403 | */ | |
404 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
405 | if (lsm->enabled) | |
406 | lsm_append(lsm->name, &lsm_names); | |
407 | } | |
1da177e4 | 408 | |
657d910b KC |
409 | /* Load LSMs in specified order. */ |
410 | ordered_lsm_init(); | |
411 | ||
1da177e4 LT |
412 | return 0; |
413 | } | |
414 | ||
076c54c5 | 415 | /* Save user chosen LSM */ |
5ef4e419 | 416 | static int __init choose_major_lsm(char *str) |
076c54c5 | 417 | { |
5ef4e419 | 418 | chosen_major_lsm = str; |
076c54c5 AD |
419 | return 1; |
420 | } | |
5ef4e419 | 421 | __setup("security=", choose_major_lsm); |
076c54c5 | 422 | |
79f7865d KC |
423 | /* Explicitly choose LSM initialization order. */ |
424 | static int __init choose_lsm_order(char *str) | |
425 | { | |
426 | chosen_lsm_order = str; | |
427 | return 1; | |
428 | } | |
429 | __setup("lsm=", choose_lsm_order); | |
430 | ||
9b8c7c14 KC |
431 | /* Enable LSM order debugging. */ |
432 | static int __init enable_debug(char *str) | |
433 | { | |
434 | debug = true; | |
435 | return 1; | |
436 | } | |
437 | __setup("lsm.debug", enable_debug); | |
438 | ||
3bb857e4 MS |
439 | static bool match_last_lsm(const char *list, const char *lsm) |
440 | { | |
441 | const char *last; | |
442 | ||
443 | if (WARN_ON(!list || !lsm)) | |
444 | return false; | |
445 | last = strrchr(list, ','); | |
446 | if (last) | |
447 | /* Pass the comma, strcmp() will check for '\0' */ | |
448 | last++; | |
449 | else | |
450 | last = list; | |
451 | return !strcmp(last, lsm); | |
452 | } | |
453 | ||
e6b1db98 | 454 | static int lsm_append(const char *new, char **result) |
d69dece5 CS |
455 | { |
456 | char *cp; | |
457 | ||
458 | if (*result == NULL) { | |
459 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
460 | if (*result == NULL) |
461 | return -ENOMEM; | |
d69dece5 | 462 | } else { |
3bb857e4 MS |
463 | /* Check if it is the last registered name */ |
464 | if (match_last_lsm(*result, new)) | |
465 | return 0; | |
d69dece5 CS |
466 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
467 | if (cp == NULL) | |
468 | return -ENOMEM; | |
469 | kfree(*result); | |
470 | *result = cp; | |
471 | } | |
472 | return 0; | |
473 | } | |
474 | ||
d69dece5 CS |
475 | /** |
476 | * security_add_hooks - Add a modules hooks to the hook lists. | |
477 | * @hooks: the hooks to add | |
478 | * @count: the number of hooks to add | |
479 | * @lsm: the name of the security module | |
480 | * | |
481 | * Each LSM has to register its hooks with the infrastructure. | |
482 | */ | |
483 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
1af0e4a0 | 484 | const char *lsm) |
d69dece5 CS |
485 | { |
486 | int i; | |
487 | ||
488 | for (i = 0; i < count; i++) { | |
489 | hooks[i].lsm = lsm; | |
df0ce173 | 490 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
d69dece5 | 491 | } |
e6b1db98 MG |
492 | |
493 | /* | |
494 | * Don't try to append during early_security_init(), we'll come back | |
495 | * and fix this up afterwards. | |
496 | */ | |
497 | if (slab_is_available()) { | |
498 | if (lsm_append(lsm, &lsm_names) < 0) | |
499 | panic("%s - Cannot get early memory.\n", __func__); | |
500 | } | |
d69dece5 CS |
501 | } |
502 | ||
42df744c | 503 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 504 | { |
42df744c JK |
505 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
506 | event, data); | |
8f408ab6 | 507 | } |
42df744c | 508 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 509 | |
42df744c | 510 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 511 | { |
42df744c JK |
512 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
513 | nb); | |
8f408ab6 | 514 | } |
42df744c | 515 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 516 | |
42df744c | 517 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 518 | { |
42df744c JK |
519 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
520 | nb); | |
8f408ab6 | 521 | } |
42df744c | 522 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 523 | |
bbd3662a CS |
524 | /** |
525 | * lsm_cred_alloc - allocate a composite cred blob | |
526 | * @cred: the cred that needs a blob | |
527 | * @gfp: allocation type | |
528 | * | |
529 | * Allocate the cred blob for all the modules | |
530 | * | |
531 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
532 | */ | |
533 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
534 | { | |
535 | if (blob_sizes.lbs_cred == 0) { | |
536 | cred->security = NULL; | |
537 | return 0; | |
538 | } | |
539 | ||
540 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
541 | if (cred->security == NULL) | |
542 | return -ENOMEM; | |
543 | return 0; | |
544 | } | |
545 | ||
546 | /** | |
547 | * lsm_early_cred - during initialization allocate a composite cred blob | |
548 | * @cred: the cred that needs a blob | |
549 | * | |
1cfb2a51 | 550 | * Allocate the cred blob for all the modules |
bbd3662a | 551 | */ |
1cfb2a51 | 552 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 553 | { |
1cfb2a51 | 554 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 555 | |
bbd3662a CS |
556 | if (rc) |
557 | panic("%s: Early cred alloc failed.\n", __func__); | |
558 | } | |
559 | ||
33bf60ca CS |
560 | /** |
561 | * lsm_file_alloc - allocate a composite file blob | |
562 | * @file: the file that needs a blob | |
563 | * | |
564 | * Allocate the file blob for all the modules | |
565 | * | |
566 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
567 | */ | |
568 | static int lsm_file_alloc(struct file *file) | |
569 | { | |
570 | if (!lsm_file_cache) { | |
571 | file->f_security = NULL; | |
572 | return 0; | |
573 | } | |
574 | ||
575 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
576 | if (file->f_security == NULL) | |
577 | return -ENOMEM; | |
578 | return 0; | |
579 | } | |
580 | ||
afb1cbe3 CS |
581 | /** |
582 | * lsm_inode_alloc - allocate a composite inode blob | |
583 | * @inode: the inode that needs a blob | |
584 | * | |
585 | * Allocate the inode blob for all the modules | |
586 | * | |
587 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
588 | */ | |
589 | int lsm_inode_alloc(struct inode *inode) | |
590 | { | |
591 | if (!lsm_inode_cache) { | |
592 | inode->i_security = NULL; | |
593 | return 0; | |
594 | } | |
595 | ||
596 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
597 | if (inode->i_security == NULL) | |
598 | return -ENOMEM; | |
599 | return 0; | |
600 | } | |
601 | ||
f4ad8f2c CS |
602 | /** |
603 | * lsm_task_alloc - allocate a composite task blob | |
604 | * @task: the task that needs a blob | |
605 | * | |
606 | * Allocate the task blob for all the modules | |
607 | * | |
608 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
609 | */ | |
3e8c7367 | 610 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c CS |
611 | { |
612 | if (blob_sizes.lbs_task == 0) { | |
613 | task->security = NULL; | |
614 | return 0; | |
615 | } | |
616 | ||
617 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
618 | if (task->security == NULL) | |
619 | return -ENOMEM; | |
620 | return 0; | |
621 | } | |
622 | ||
ecd5f82e CS |
623 | /** |
624 | * lsm_ipc_alloc - allocate a composite ipc blob | |
625 | * @kip: the ipc that needs a blob | |
626 | * | |
627 | * Allocate the ipc blob for all the modules | |
628 | * | |
629 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
630 | */ | |
3e8c7367 | 631 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
632 | { |
633 | if (blob_sizes.lbs_ipc == 0) { | |
634 | kip->security = NULL; | |
635 | return 0; | |
636 | } | |
637 | ||
638 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
639 | if (kip->security == NULL) | |
640 | return -ENOMEM; | |
641 | return 0; | |
642 | } | |
643 | ||
644 | /** | |
645 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
646 | * @mp: the msg_msg that needs a blob | |
647 | * | |
648 | * Allocate the ipc blob for all the modules | |
649 | * | |
650 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
651 | */ | |
3e8c7367 | 652 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
653 | { |
654 | if (blob_sizes.lbs_msg_msg == 0) { | |
655 | mp->security = NULL; | |
656 | return 0; | |
657 | } | |
658 | ||
659 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
660 | if (mp->security == NULL) | |
661 | return -ENOMEM; | |
662 | return 0; | |
663 | } | |
664 | ||
f4ad8f2c CS |
665 | /** |
666 | * lsm_early_task - during initialization allocate a composite task blob | |
667 | * @task: the task that needs a blob | |
668 | * | |
1cfb2a51 | 669 | * Allocate the task blob for all the modules |
f4ad8f2c | 670 | */ |
1cfb2a51 | 671 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 672 | { |
1cfb2a51 | 673 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 674 | |
f4ad8f2c CS |
675 | if (rc) |
676 | panic("%s: Early task alloc failed.\n", __func__); | |
677 | } | |
678 | ||
1aea7808 CS |
679 | /** |
680 | * lsm_superblock_alloc - allocate a composite superblock blob | |
681 | * @sb: the superblock that needs a blob | |
682 | * | |
683 | * Allocate the superblock blob for all the modules | |
684 | * | |
685 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
686 | */ | |
687 | static int lsm_superblock_alloc(struct super_block *sb) | |
688 | { | |
689 | if (blob_sizes.lbs_superblock == 0) { | |
690 | sb->s_security = NULL; | |
691 | return 0; | |
692 | } | |
693 | ||
694 | sb->s_security = kzalloc(blob_sizes.lbs_superblock, GFP_KERNEL); | |
695 | if (sb->s_security == NULL) | |
696 | return -ENOMEM; | |
697 | return 0; | |
698 | } | |
699 | ||
98e828a0 KS |
700 | /* |
701 | * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and | |
702 | * can be accessed with: | |
703 | * | |
704 | * LSM_RET_DEFAULT(<hook_name>) | |
705 | * | |
706 | * The macros below define static constants for the default value of each | |
707 | * LSM hook. | |
708 | */ | |
709 | #define LSM_RET_DEFAULT(NAME) (NAME##_default) | |
710 | #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME) | |
711 | #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \ | |
86dd9fd5 | 712 | static const int __maybe_unused LSM_RET_DEFAULT(NAME) = (DEFAULT); |
98e828a0 KS |
713 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ |
714 | DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME) | |
715 | ||
716 | #include <linux/lsm_hook_defs.h> | |
717 | #undef LSM_HOOK | |
718 | ||
f25fce3e | 719 | /* |
b1d9e6b0 | 720 | * Hook list operation macros. |
1da177e4 | 721 | * |
f25fce3e CS |
722 | * call_void_hook: |
723 | * This is a hook that does not return a value. | |
1da177e4 | 724 | * |
f25fce3e CS |
725 | * call_int_hook: |
726 | * This is a hook that returns a value. | |
1da177e4 | 727 | */ |
1da177e4 | 728 | |
b1d9e6b0 CS |
729 | #define call_void_hook(FUNC, ...) \ |
730 | do { \ | |
731 | struct security_hook_list *P; \ | |
732 | \ | |
df0ce173 | 733 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
734 | P->hook.FUNC(__VA_ARGS__); \ |
735 | } while (0) | |
736 | ||
737 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
738 | int RC = IRC; \ | |
739 | do { \ | |
740 | struct security_hook_list *P; \ | |
741 | \ | |
df0ce173 | 742 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
743 | RC = P->hook.FUNC(__VA_ARGS__); \ |
744 | if (RC != 0) \ | |
745 | break; \ | |
746 | } \ | |
747 | } while (0); \ | |
748 | RC; \ | |
749 | }) | |
1da177e4 | 750 | |
20510f2f JM |
751 | /* Security operations */ |
752 | ||
52f88693 | 753 | int security_binder_set_context_mgr(const struct cred *mgr) |
79af7307 | 754 | { |
f25fce3e | 755 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 SS |
756 | } |
757 | ||
52f88693 TK |
758 | int security_binder_transaction(const struct cred *from, |
759 | const struct cred *to) | |
79af7307 | 760 | { |
f25fce3e | 761 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 SS |
762 | } |
763 | ||
52f88693 TK |
764 | int security_binder_transfer_binder(const struct cred *from, |
765 | const struct cred *to) | |
79af7307 | 766 | { |
f25fce3e | 767 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 SS |
768 | } |
769 | ||
52f88693 TK |
770 | int security_binder_transfer_file(const struct cred *from, |
771 | const struct cred *to, struct file *file) | |
79af7307 | 772 | { |
f25fce3e | 773 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 SS |
774 | } |
775 | ||
9e48858f | 776 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 777 | { |
f25fce3e | 778 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
779 | } |
780 | ||
781 | int security_ptrace_traceme(struct task_struct *parent) | |
782 | { | |
f25fce3e | 783 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
784 | } |
785 | ||
786 | int security_capget(struct task_struct *target, | |
787 | kernel_cap_t *effective, | |
788 | kernel_cap_t *inheritable, | |
789 | kernel_cap_t *permitted) | |
790 | { | |
f25fce3e CS |
791 | return call_int_hook(capget, 0, target, |
792 | effective, inheritable, permitted); | |
20510f2f JM |
793 | } |
794 | ||
d84f4f99 DH |
795 | int security_capset(struct cred *new, const struct cred *old, |
796 | const kernel_cap_t *effective, | |
797 | const kernel_cap_t *inheritable, | |
798 | const kernel_cap_t *permitted) | |
20510f2f | 799 | { |
f25fce3e CS |
800 | return call_int_hook(capset, 0, new, old, |
801 | effective, inheritable, permitted); | |
20510f2f JM |
802 | } |
803 | ||
c1a85a00 MM |
804 | int security_capable(const struct cred *cred, |
805 | struct user_namespace *ns, | |
806 | int cap, | |
807 | unsigned int opts) | |
20510f2f | 808 | { |
c1a85a00 | 809 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
810 | } |
811 | ||
20510f2f JM |
812 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
813 | { | |
f25fce3e | 814 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
815 | } |
816 | ||
817 | int security_quota_on(struct dentry *dentry) | |
818 | { | |
f25fce3e | 819 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
820 | } |
821 | ||
12b3052c | 822 | int security_syslog(int type) |
20510f2f | 823 | { |
f25fce3e | 824 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
825 | } |
826 | ||
457db29b | 827 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 828 | { |
f25fce3e | 829 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
830 | } |
831 | ||
20510f2f JM |
832 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
833 | { | |
b1d9e6b0 CS |
834 | struct security_hook_list *hp; |
835 | int cap_sys_admin = 1; | |
836 | int rc; | |
837 | ||
838 | /* | |
839 | * The module will respond with a positive value if | |
840 | * it thinks the __vm_enough_memory() call should be | |
841 | * made with the cap_sys_admin set. If all of the modules | |
842 | * agree that it should be set it will. If any module | |
843 | * thinks it should not be set it won't. | |
844 | */ | |
df0ce173 | 845 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
846 | rc = hp->hook.vm_enough_memory(mm, pages); |
847 | if (rc <= 0) { | |
848 | cap_sys_admin = 0; | |
849 | break; | |
850 | } | |
851 | } | |
852 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
853 | } |
854 | ||
b8bff599 | 855 | int security_bprm_creds_for_exec(struct linux_binprm *bprm) |
20510f2f | 856 | { |
b8bff599 EB |
857 | return call_int_hook(bprm_creds_for_exec, 0, bprm); |
858 | } | |
859 | ||
56305aa9 | 860 | int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file) |
20510f2f | 861 | { |
56305aa9 | 862 | return call_int_hook(bprm_creds_from_file, 0, bprm, file); |
20510f2f JM |
863 | } |
864 | ||
a6f76f23 | 865 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 866 | { |
6c21a7fb MZ |
867 | int ret; |
868 | ||
f25fce3e | 869 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
870 | if (ret) |
871 | return ret; | |
872 | return ima_bprm_check(bprm); | |
20510f2f JM |
873 | } |
874 | ||
a6f76f23 | 875 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 876 | { |
f25fce3e | 877 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
878 | } |
879 | ||
a6f76f23 | 880 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 881 | { |
f25fce3e | 882 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
883 | } |
884 | ||
0b52075e AV |
885 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
886 | { | |
887 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
888 | } | |
889 | ||
ecff3057 CS |
890 | int security_fs_context_parse_param(struct fs_context *fc, |
891 | struct fs_parameter *param) | |
da2441fd | 892 | { |
ecff3057 CS |
893 | struct security_hook_list *hp; |
894 | int trc; | |
895 | int rc = -ENOPARAM; | |
896 | ||
897 | hlist_for_each_entry(hp, &security_hook_heads.fs_context_parse_param, | |
898 | list) { | |
899 | trc = hp->hook.fs_context_parse_param(fc, param); | |
900 | if (trc == 0) | |
901 | rc = 0; | |
902 | else if (trc != -ENOPARAM) | |
903 | return trc; | |
904 | } | |
905 | return rc; | |
da2441fd DH |
906 | } |
907 | ||
20510f2f JM |
908 | int security_sb_alloc(struct super_block *sb) |
909 | { | |
1aea7808 CS |
910 | int rc = lsm_superblock_alloc(sb); |
911 | ||
912 | if (unlikely(rc)) | |
913 | return rc; | |
914 | rc = call_int_hook(sb_alloc_security, 0, sb); | |
915 | if (unlikely(rc)) | |
916 | security_sb_free(sb); | |
917 | return rc; | |
20510f2f JM |
918 | } |
919 | ||
83e804f0 MS |
920 | void security_sb_delete(struct super_block *sb) |
921 | { | |
922 | call_void_hook(sb_delete, sb); | |
20510f2f JM |
923 | } |
924 | ||
925 | void security_sb_free(struct super_block *sb) | |
926 | { | |
f25fce3e | 927 | call_void_hook(sb_free_security, sb); |
1aea7808 CS |
928 | kfree(sb->s_security); |
929 | sb->s_security = NULL; | |
20510f2f JM |
930 | } |
931 | ||
204cc0cc | 932 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 933 | { |
204cc0cc AV |
934 | if (!*mnt_opts) |
935 | return; | |
936 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
937 | *mnt_opts = NULL; | |
20510f2f | 938 | } |
204cc0cc | 939 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 940 | |
204cc0cc | 941 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 942 | { |
204cc0cc | 943 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 944 | } |
f5c0c26d | 945 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 946 | |
69c4a42d OK |
947 | int security_sb_mnt_opts_compat(struct super_block *sb, |
948 | void *mnt_opts) | |
949 | { | |
950 | return call_int_hook(sb_mnt_opts_compat, 0, sb, mnt_opts); | |
951 | } | |
952 | EXPORT_SYMBOL(security_sb_mnt_opts_compat); | |
953 | ||
c039bc3c | 954 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 955 | void *mnt_opts) |
20510f2f | 956 | { |
204cc0cc | 957 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 958 | } |
a65001e8 | 959 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 960 | |
a10d7c22 | 961 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 962 | { |
a10d7c22 | 963 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
964 | } |
965 | ||
2069f457 EP |
966 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
967 | { | |
f25fce3e | 968 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
969 | } |
970 | ||
20510f2f JM |
971 | int security_sb_statfs(struct dentry *dentry) |
972 | { | |
f25fce3e | 973 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
974 | } |
975 | ||
8a04c43b | 976 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 977 | const char *type, unsigned long flags, void *data) |
20510f2f | 978 | { |
f25fce3e | 979 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
980 | } |
981 | ||
20510f2f JM |
982 | int security_sb_umount(struct vfsmount *mnt, int flags) |
983 | { | |
f25fce3e | 984 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
985 | } |
986 | ||
3b73b68c | 987 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 988 | { |
f25fce3e | 989 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
990 | } |
991 | ||
c9180a57 | 992 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 993 | void *mnt_opts, |
649f6e77 DQ |
994 | unsigned long kern_flags, |
995 | unsigned long *set_kern_flags) | |
c9180a57 | 996 | { |
b1d9e6b0 | 997 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
998 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
999 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 1000 | } |
e0007529 | 1001 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 1002 | |
094f7b69 | 1003 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
1004 | struct super_block *newsb, |
1005 | unsigned long kern_flags, | |
1006 | unsigned long *set_kern_flags) | |
c9180a57 | 1007 | { |
0b4d3452 SM |
1008 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
1009 | kern_flags, set_kern_flags); | |
c9180a57 | 1010 | } |
e0007529 EP |
1011 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
1012 | ||
2db154b3 DH |
1013 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
1014 | { | |
1015 | return call_int_hook(move_mount, 0, from_path, to_path); | |
1016 | } | |
1017 | ||
ac5656d8 AG |
1018 | int security_path_notify(const struct path *path, u64 mask, |
1019 | unsigned int obj_type) | |
1020 | { | |
1021 | return call_int_hook(path_notify, 0, path, mask, obj_type); | |
1022 | } | |
1023 | ||
20510f2f JM |
1024 | int security_inode_alloc(struct inode *inode) |
1025 | { | |
afb1cbe3 CS |
1026 | int rc = lsm_inode_alloc(inode); |
1027 | ||
1028 | if (unlikely(rc)) | |
1029 | return rc; | |
1030 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
1031 | if (unlikely(rc)) | |
1032 | security_inode_free(inode); | |
1033 | return rc; | |
1034 | } | |
1035 | ||
1036 | static void inode_free_by_rcu(struct rcu_head *head) | |
1037 | { | |
1038 | /* | |
1039 | * The rcu head is at the start of the inode blob | |
1040 | */ | |
1041 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
1042 | } |
1043 | ||
1044 | void security_inode_free(struct inode *inode) | |
1045 | { | |
f381c272 | 1046 | integrity_inode_free(inode); |
f25fce3e | 1047 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
1048 | /* |
1049 | * The inode may still be referenced in a path walk and | |
1050 | * a call to security_inode_permission() can be made | |
1051 | * after inode_free_security() is called. Ideally, the VFS | |
1052 | * wouldn't do this, but fixing that is a much harder | |
1053 | * job. For now, simply free the i_security via RCU, and | |
1054 | * leave the current inode->i_security pointer intact. | |
1055 | * The inode will be freed after the RCU grace period too. | |
1056 | */ | |
1057 | if (inode->i_security) | |
1058 | call_rcu((struct rcu_head *)inode->i_security, | |
1059 | inode_free_by_rcu); | |
20510f2f JM |
1060 | } |
1061 | ||
d47be3df | 1062 | int security_dentry_init_security(struct dentry *dentry, int mode, |
15bf3239 VG |
1063 | const struct qstr *name, |
1064 | const char **xattr_name, void **ctx, | |
1065 | u32 *ctxlen) | |
d47be3df | 1066 | { |
7f5056b9 VG |
1067 | struct security_hook_list *hp; |
1068 | int rc; | |
1069 | ||
1070 | /* | |
1071 | * Only one module will provide a security context. | |
1072 | */ | |
1073 | hlist_for_each_entry(hp, &security_hook_heads.dentry_init_security, list) { | |
1074 | rc = hp->hook.dentry_init_security(dentry, mode, name, | |
1075 | xattr_name, ctx, ctxlen); | |
1076 | if (rc != LSM_RET_DEFAULT(dentry_init_security)) | |
1077 | return rc; | |
1078 | } | |
1079 | return LSM_RET_DEFAULT(dentry_init_security); | |
d47be3df DQ |
1080 | } |
1081 | EXPORT_SYMBOL(security_dentry_init_security); | |
1082 | ||
2602625b VG |
1083 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
1084 | struct qstr *name, | |
1085 | const struct cred *old, struct cred *new) | |
1086 | { | |
1087 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
1088 | name, old, new); | |
1089 | } | |
1090 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
1091 | ||
20510f2f | 1092 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
1093 | const struct qstr *qstr, |
1094 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 1095 | { |
823eb1cc MZ |
1096 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
1097 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
1098 | int ret; |
1099 | ||
20510f2f | 1100 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 1101 | return 0; |
9d8f13ba | 1102 | |
9d8f13ba | 1103 | if (!initxattrs) |
e308fd3b JB |
1104 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
1105 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 1106 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 1107 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 1108 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
1109 | &lsm_xattr->name, |
1110 | &lsm_xattr->value, | |
1111 | &lsm_xattr->value_len); | |
1112 | if (ret) | |
1113 | goto out; | |
823eb1cc MZ |
1114 | |
1115 | evm_xattr = lsm_xattr + 1; | |
1116 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1117 | if (ret) | |
1118 | goto out; | |
9d8f13ba MZ |
1119 | ret = initxattrs(inode, new_xattrs, fs_data); |
1120 | out: | |
9548906b | 1121 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1122 | kfree(xattr->value); |
9d8f13ba MZ |
1123 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1124 | } | |
1125 | EXPORT_SYMBOL(security_inode_init_security); | |
1126 | ||
215b674b LG |
1127 | int security_inode_init_security_anon(struct inode *inode, |
1128 | const struct qstr *name, | |
1129 | const struct inode *context_inode) | |
1130 | { | |
1131 | return call_int_hook(inode_init_security_anon, 0, inode, name, | |
1132 | context_inode); | |
1133 | } | |
1134 | ||
9d8f13ba | 1135 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, |
9548906b | 1136 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1137 | void **value, size_t *len) |
20510f2f JM |
1138 | { |
1139 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1140 | return -EOPNOTSUPP; |
e308fd3b JB |
1141 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1142 | qstr, name, value, len); | |
20510f2f | 1143 | } |
9d8f13ba | 1144 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1145 | |
be6d3e56 | 1146 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1147 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1148 | unsigned int dev) |
1149 | { | |
c6f493d6 | 1150 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1151 | return 0; |
f25fce3e | 1152 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1153 | } |
1154 | EXPORT_SYMBOL(security_path_mknod); | |
1155 | ||
d3607752 | 1156 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1157 | { |
c6f493d6 | 1158 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1159 | return 0; |
f25fce3e | 1160 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1161 | } |
82140443 | 1162 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1163 | |
989f74e0 | 1164 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1165 | { |
c6f493d6 | 1166 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1167 | return 0; |
f25fce3e | 1168 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 KT |
1169 | } |
1170 | ||
989f74e0 | 1171 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1172 | { |
c6f493d6 | 1173 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1174 | return 0; |
f25fce3e | 1175 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1176 | } |
82140443 | 1177 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1178 | |
d3607752 | 1179 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1180 | const char *old_name) |
1181 | { | |
c6f493d6 | 1182 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1183 | return 0; |
f25fce3e | 1184 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 KT |
1185 | } |
1186 | ||
3ccee46a | 1187 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1188 | struct dentry *new_dentry) |
1189 | { | |
c6f493d6 | 1190 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1191 | return 0; |
f25fce3e | 1192 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 KT |
1193 | } |
1194 | ||
3ccee46a AV |
1195 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1196 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1197 | unsigned int flags) |
be6d3e56 | 1198 | { |
c6f493d6 DH |
1199 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1200 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1201 | return 0; |
da1ce067 | 1202 | |
f25fce3e | 1203 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
100f59d9 | 1204 | new_dentry, flags); |
be6d3e56 | 1205 | } |
82140443 | 1206 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1207 | |
81f4c506 | 1208 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1209 | { |
c6f493d6 | 1210 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1211 | return 0; |
f25fce3e | 1212 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1213 | } |
89eda068 | 1214 | |
be01f9f2 | 1215 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1216 | { |
c6f493d6 | 1217 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1218 | return 0; |
f25fce3e | 1219 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 TH |
1220 | } |
1221 | ||
7fd25dac | 1222 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1223 | { |
c6f493d6 | 1224 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1225 | return 0; |
f25fce3e | 1226 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1227 | } |
8b8efb44 | 1228 | |
77b286c0 | 1229 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1230 | { |
f25fce3e | 1231 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1232 | } |
be6d3e56 KT |
1233 | #endif |
1234 | ||
4acdaf27 | 1235 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1236 | { |
1237 | if (unlikely(IS_PRIVATE(dir))) | |
1238 | return 0; | |
f25fce3e | 1239 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1240 | } |
800a9647 | 1241 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1242 | |
1243 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1244 | struct dentry *new_dentry) | |
1245 | { | |
c6f493d6 | 1246 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1247 | return 0; |
f25fce3e | 1248 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1249 | } |
1250 | ||
1251 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1252 | { | |
c6f493d6 | 1253 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1254 | return 0; |
f25fce3e | 1255 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1256 | } |
1257 | ||
1258 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1259 | const char *old_name) | |
1260 | { | |
1261 | if (unlikely(IS_PRIVATE(dir))) | |
1262 | return 0; | |
f25fce3e | 1263 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1264 | } |
1265 | ||
18bb1db3 | 1266 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1267 | { |
1268 | if (unlikely(IS_PRIVATE(dir))) | |
1269 | return 0; | |
f25fce3e | 1270 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1271 | } |
800a9647 | 1272 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1273 | |
1274 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1275 | { | |
c6f493d6 | 1276 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1277 | return 0; |
f25fce3e | 1278 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1279 | } |
1280 | ||
1a67aafb | 1281 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1282 | { |
1283 | if (unlikely(IS_PRIVATE(dir))) | |
1284 | return 0; | |
f25fce3e | 1285 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1286 | } |
1287 | ||
1288 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1289 | struct inode *new_dir, struct dentry *new_dentry, |
1290 | unsigned int flags) | |
20510f2f | 1291 | { |
c6f493d6 DH |
1292 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1293 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1294 | return 0; |
da1ce067 MS |
1295 | |
1296 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1297 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1298 | old_dir, old_dentry); |
1299 | if (err) | |
1300 | return err; | |
1301 | } | |
1302 | ||
f25fce3e | 1303 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1304 | new_dir, new_dentry); |
1305 | } | |
1306 | ||
1307 | int security_inode_readlink(struct dentry *dentry) | |
1308 | { | |
c6f493d6 | 1309 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1310 | return 0; |
f25fce3e | 1311 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1312 | } |
1313 | ||
bda0be7a N |
1314 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1315 | bool rcu) | |
20510f2f | 1316 | { |
bda0be7a | 1317 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1318 | return 0; |
e22619a2 | 1319 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1320 | } |
1321 | ||
b77b0646 | 1322 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1323 | { |
1324 | if (unlikely(IS_PRIVATE(inode))) | |
1325 | return 0; | |
f25fce3e | 1326 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f JM |
1327 | } |
1328 | ||
0e363cf3 CB |
1329 | int security_inode_setattr(struct user_namespace *mnt_userns, |
1330 | struct dentry *dentry, struct iattr *attr) | |
20510f2f | 1331 | { |
817b54aa MZ |
1332 | int ret; |
1333 | ||
c6f493d6 | 1334 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1335 | return 0; |
f25fce3e | 1336 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1337 | if (ret) |
1338 | return ret; | |
0e363cf3 | 1339 | return evm_inode_setattr(mnt_userns, dentry, attr); |
20510f2f | 1340 | } |
b1da47e2 | 1341 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1342 | |
3f7036a0 | 1343 | int security_inode_getattr(const struct path *path) |
20510f2f | 1344 | { |
c6f493d6 | 1345 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1346 | return 0; |
f25fce3e | 1347 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1348 | } |
1349 | ||
71bc356f CB |
1350 | int security_inode_setxattr(struct user_namespace *mnt_userns, |
1351 | struct dentry *dentry, const char *name, | |
8f0cfa52 | 1352 | const void *value, size_t size, int flags) |
20510f2f | 1353 | { |
3e1be52d MZ |
1354 | int ret; |
1355 | ||
c6f493d6 | 1356 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1357 | return 0; |
b1d9e6b0 CS |
1358 | /* |
1359 | * SELinux and Smack integrate the cap call, | |
1360 | * so assume that all LSMs supplying this call do so. | |
1361 | */ | |
71bc356f CB |
1362 | ret = call_int_hook(inode_setxattr, 1, mnt_userns, dentry, name, value, |
1363 | size, flags); | |
b1d9e6b0 CS |
1364 | |
1365 | if (ret == 1) | |
1366 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1367 | if (ret) |
1368 | return ret; | |
1369 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1370 | if (ret) |
1371 | return ret; | |
7e135dc7 | 1372 | return evm_inode_setxattr(mnt_userns, dentry, name, value, size); |
20510f2f JM |
1373 | } |
1374 | ||
8f0cfa52 DH |
1375 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1376 | const void *value, size_t size, int flags) | |
20510f2f | 1377 | { |
c6f493d6 | 1378 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1379 | return; |
f25fce3e | 1380 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1381 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1382 | } |
1383 | ||
8f0cfa52 | 1384 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1385 | { |
c6f493d6 | 1386 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1387 | return 0; |
f25fce3e | 1388 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1389 | } |
1390 | ||
1391 | int security_inode_listxattr(struct dentry *dentry) | |
1392 | { | |
c6f493d6 | 1393 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1394 | return 0; |
f25fce3e | 1395 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1396 | } |
1397 | ||
71bc356f CB |
1398 | int security_inode_removexattr(struct user_namespace *mnt_userns, |
1399 | struct dentry *dentry, const char *name) | |
20510f2f | 1400 | { |
3e1be52d MZ |
1401 | int ret; |
1402 | ||
c6f493d6 | 1403 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1404 | return 0; |
b1d9e6b0 CS |
1405 | /* |
1406 | * SELinux and Smack integrate the cap call, | |
1407 | * so assume that all LSMs supplying this call do so. | |
1408 | */ | |
71bc356f | 1409 | ret = call_int_hook(inode_removexattr, 1, mnt_userns, dentry, name); |
b1d9e6b0 | 1410 | if (ret == 1) |
71bc356f | 1411 | ret = cap_inode_removexattr(mnt_userns, dentry, name); |
42c63330 MZ |
1412 | if (ret) |
1413 | return ret; | |
1414 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1415 | if (ret) |
1416 | return ret; | |
7e135dc7 | 1417 | return evm_inode_removexattr(mnt_userns, dentry, name); |
20510f2f JM |
1418 | } |
1419 | ||
b5376771 SH |
1420 | int security_inode_need_killpriv(struct dentry *dentry) |
1421 | { | |
f25fce3e | 1422 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1423 | } |
1424 | ||
71bc356f CB |
1425 | int security_inode_killpriv(struct user_namespace *mnt_userns, |
1426 | struct dentry *dentry) | |
b5376771 | 1427 | { |
71bc356f | 1428 | return call_int_hook(inode_killpriv, 0, mnt_userns, dentry); |
b5376771 SH |
1429 | } |
1430 | ||
71bc356f CB |
1431 | int security_inode_getsecurity(struct user_namespace *mnt_userns, |
1432 | struct inode *inode, const char *name, | |
1433 | void **buffer, bool alloc) | |
20510f2f | 1434 | { |
2885c1e3 CS |
1435 | struct security_hook_list *hp; |
1436 | int rc; | |
1437 | ||
20510f2f | 1438 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1439 | return LSM_RET_DEFAULT(inode_getsecurity); |
2885c1e3 CS |
1440 | /* |
1441 | * Only one module will provide an attribute with a given name. | |
1442 | */ | |
df0ce173 | 1443 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
71bc356f | 1444 | rc = hp->hook.inode_getsecurity(mnt_userns, inode, name, buffer, alloc); |
98e828a0 | 1445 | if (rc != LSM_RET_DEFAULT(inode_getsecurity)) |
2885c1e3 CS |
1446 | return rc; |
1447 | } | |
98e828a0 | 1448 | return LSM_RET_DEFAULT(inode_getsecurity); |
20510f2f JM |
1449 | } |
1450 | ||
1451 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1452 | { | |
2885c1e3 CS |
1453 | struct security_hook_list *hp; |
1454 | int rc; | |
1455 | ||
20510f2f | 1456 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1457 | return LSM_RET_DEFAULT(inode_setsecurity); |
2885c1e3 CS |
1458 | /* |
1459 | * Only one module will provide an attribute with a given name. | |
1460 | */ | |
df0ce173 | 1461 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1462 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1463 | flags); | |
98e828a0 | 1464 | if (rc != LSM_RET_DEFAULT(inode_setsecurity)) |
2885c1e3 CS |
1465 | return rc; |
1466 | } | |
98e828a0 | 1467 | return LSM_RET_DEFAULT(inode_setsecurity); |
20510f2f JM |
1468 | } |
1469 | ||
1470 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1471 | { | |
1472 | if (unlikely(IS_PRIVATE(inode))) | |
1473 | return 0; | |
f25fce3e | 1474 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1475 | } |
c9bccef6 | 1476 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1477 | |
d6335d77 | 1478 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1479 | { |
f25fce3e | 1480 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1481 | } |
1482 | ||
d8ad8b49 VG |
1483 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1484 | { | |
1485 | return call_int_hook(inode_copy_up, 0, src, new); | |
1486 | } | |
1487 | EXPORT_SYMBOL(security_inode_copy_up); | |
1488 | ||
121ab822 VG |
1489 | int security_inode_copy_up_xattr(const char *name) |
1490 | { | |
23e390cd KS |
1491 | struct security_hook_list *hp; |
1492 | int rc; | |
1493 | ||
1494 | /* | |
1495 | * The implementation can return 0 (accept the xattr), 1 (discard the | |
1496 | * xattr), -EOPNOTSUPP if it does not know anything about the xattr or | |
1497 | * any other error code incase of an error. | |
1498 | */ | |
1499 | hlist_for_each_entry(hp, | |
1500 | &security_hook_heads.inode_copy_up_xattr, list) { | |
1501 | rc = hp->hook.inode_copy_up_xattr(name); | |
1502 | if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr)) | |
1503 | return rc; | |
1504 | } | |
1505 | ||
1506 | return LSM_RET_DEFAULT(inode_copy_up_xattr); | |
121ab822 VG |
1507 | } |
1508 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1509 | ||
b230d5ab OM |
1510 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1511 | struct kernfs_node *kn) | |
1512 | { | |
1513 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1514 | } | |
1515 | ||
20510f2f JM |
1516 | int security_file_permission(struct file *file, int mask) |
1517 | { | |
c4ec54b4 EP |
1518 | int ret; |
1519 | ||
f25fce3e | 1520 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1521 | if (ret) |
1522 | return ret; | |
1523 | ||
1524 | return fsnotify_perm(file, mask); | |
20510f2f JM |
1525 | } |
1526 | ||
1527 | int security_file_alloc(struct file *file) | |
1528 | { | |
33bf60ca CS |
1529 | int rc = lsm_file_alloc(file); |
1530 | ||
1531 | if (rc) | |
1532 | return rc; | |
1533 | rc = call_int_hook(file_alloc_security, 0, file); | |
1534 | if (unlikely(rc)) | |
1535 | security_file_free(file); | |
1536 | return rc; | |
20510f2f JM |
1537 | } |
1538 | ||
1539 | void security_file_free(struct file *file) | |
1540 | { | |
33bf60ca CS |
1541 | void *blob; |
1542 | ||
f25fce3e | 1543 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1544 | |
1545 | blob = file->f_security; | |
1546 | if (blob) { | |
1547 | file->f_security = NULL; | |
1548 | kmem_cache_free(lsm_file_cache, blob); | |
1549 | } | |
20510f2f JM |
1550 | } |
1551 | ||
1552 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1553 | { | |
f25fce3e | 1554 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f | 1555 | } |
292f902a | 1556 | EXPORT_SYMBOL_GPL(security_file_ioctl); |
20510f2f | 1557 | |
98de59bf | 1558 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1559 | { |
8b3ec681 | 1560 | /* |
98de59bf AV |
1561 | * Does we have PROT_READ and does the application expect |
1562 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1563 | */ |
98de59bf AV |
1564 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1565 | return prot; | |
8b3ec681 | 1566 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1567 | return prot; |
1568 | /* | |
1569 | * if that's an anonymous mapping, let it. | |
1570 | */ | |
1571 | if (!file) | |
1572 | return prot | PROT_EXEC; | |
1573 | /* | |
1574 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1575 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1576 | */ |
90f8572b | 1577 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1578 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1579 | if (file->f_op->mmap_capabilities) { |
1580 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1581 | if (!(caps & NOMMU_MAP_EXEC)) | |
1582 | return prot; | |
1583 | } | |
8b3ec681 | 1584 | #endif |
98de59bf | 1585 | return prot | PROT_EXEC; |
8b3ec681 | 1586 | } |
98de59bf AV |
1587 | /* anything on noexec mount won't get PROT_EXEC */ |
1588 | return prot; | |
1589 | } | |
1590 | ||
1591 | int security_mmap_file(struct file *file, unsigned long prot, | |
1592 | unsigned long flags) | |
1593 | { | |
1594 | int ret; | |
f25fce3e | 1595 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1596 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1597 | if (ret) |
1598 | return ret; | |
1599 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1600 | } |
1601 | ||
e5467859 AV |
1602 | int security_mmap_addr(unsigned long addr) |
1603 | { | |
f25fce3e | 1604 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1605 | } |
1606 | ||
20510f2f JM |
1607 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1608 | unsigned long prot) | |
1609 | { | |
8eb613c0 MZ |
1610 | int ret; |
1611 | ||
1612 | ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot); | |
1613 | if (ret) | |
1614 | return ret; | |
1615 | return ima_file_mprotect(vma, prot); | |
20510f2f JM |
1616 | } |
1617 | ||
1618 | int security_file_lock(struct file *file, unsigned int cmd) | |
1619 | { | |
f25fce3e | 1620 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1621 | } |
1622 | ||
1623 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1624 | { | |
f25fce3e | 1625 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1626 | } |
1627 | ||
e0b93edd | 1628 | void security_file_set_fowner(struct file *file) |
20510f2f | 1629 | { |
f25fce3e | 1630 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1631 | } |
1632 | ||
1633 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1634 | struct fown_struct *fown, int sig) | |
1635 | { | |
f25fce3e | 1636 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1637 | } |
1638 | ||
1639 | int security_file_receive(struct file *file) | |
1640 | { | |
f25fce3e | 1641 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1642 | } |
1643 | ||
e3f20ae2 | 1644 | int security_file_open(struct file *file) |
20510f2f | 1645 | { |
c4ec54b4 EP |
1646 | int ret; |
1647 | ||
94817692 | 1648 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1649 | if (ret) |
1650 | return ret; | |
1651 | ||
1652 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1653 | } |
1654 | ||
e4e55b47 TH |
1655 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1656 | { | |
f4ad8f2c CS |
1657 | int rc = lsm_task_alloc(task); |
1658 | ||
1659 | if (rc) | |
1660 | return rc; | |
1661 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1662 | if (unlikely(rc)) | |
1663 | security_task_free(task); | |
1664 | return rc; | |
e4e55b47 TH |
1665 | } |
1666 | ||
1a2a4d06 KC |
1667 | void security_task_free(struct task_struct *task) |
1668 | { | |
f25fce3e | 1669 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1670 | |
1671 | kfree(task->security); | |
1672 | task->security = NULL; | |
1a2a4d06 KC |
1673 | } |
1674 | ||
ee18d64c DH |
1675 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1676 | { | |
bbd3662a CS |
1677 | int rc = lsm_cred_alloc(cred, gfp); |
1678 | ||
1679 | if (rc) | |
1680 | return rc; | |
1681 | ||
1682 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1683 | if (unlikely(rc)) |
bbd3662a CS |
1684 | security_cred_free(cred); |
1685 | return rc; | |
ee18d64c DH |
1686 | } |
1687 | ||
d84f4f99 | 1688 | void security_cred_free(struct cred *cred) |
20510f2f | 1689 | { |
a5795fd3 JM |
1690 | /* |
1691 | * There is a failure case in prepare_creds() that | |
1692 | * may result in a call here with ->security being NULL. | |
1693 | */ | |
1694 | if (unlikely(cred->security == NULL)) | |
1695 | return; | |
1696 | ||
f25fce3e | 1697 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1698 | |
1699 | kfree(cred->security); | |
1700 | cred->security = NULL; | |
20510f2f JM |
1701 | } |
1702 | ||
d84f4f99 | 1703 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1704 | { |
bbd3662a CS |
1705 | int rc = lsm_cred_alloc(new, gfp); |
1706 | ||
1707 | if (rc) | |
1708 | return rc; | |
1709 | ||
1710 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1711 | if (unlikely(rc)) |
bbd3662a CS |
1712 | security_cred_free(new); |
1713 | return rc; | |
d84f4f99 DH |
1714 | } |
1715 | ||
ee18d64c DH |
1716 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1717 | { | |
f25fce3e | 1718 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1719 | } |
1720 | ||
3ec30113 MG |
1721 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
1722 | { | |
1723 | *secid = 0; | |
1724 | call_void_hook(cred_getsecid, c, secid); | |
1725 | } | |
1726 | EXPORT_SYMBOL(security_cred_getsecid); | |
1727 | ||
3a3b7ce9 DH |
1728 | int security_kernel_act_as(struct cred *new, u32 secid) |
1729 | { | |
f25fce3e | 1730 | return call_int_hook(kernel_act_as, 0, new, secid); |
3a3b7ce9 DH |
1731 | } |
1732 | ||
1733 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1734 | { | |
f25fce3e | 1735 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1736 | } |
1737 | ||
dd8dbf2e | 1738 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1739 | { |
6eb864c1 MK |
1740 | int ret; |
1741 | ||
1742 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1743 | if (ret) | |
1744 | return ret; | |
1745 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1746 | } |
1747 | ||
2039bda1 KC |
1748 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, |
1749 | bool contents) | |
39eeb4fb MZ |
1750 | { |
1751 | int ret; | |
1752 | ||
2039bda1 | 1753 | ret = call_int_hook(kernel_read_file, 0, file, id, contents); |
39eeb4fb MZ |
1754 | if (ret) |
1755 | return ret; | |
2039bda1 | 1756 | return ima_read_file(file, id, contents); |
39eeb4fb MZ |
1757 | } |
1758 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1759 | ||
bc8ca5b9 MZ |
1760 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1761 | enum kernel_read_file_id id) | |
b44a7dfc | 1762 | { |
cf222217 MZ |
1763 | int ret; |
1764 | ||
1765 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1766 | if (ret) | |
1767 | return ret; | |
1768 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1769 | } |
1770 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1771 | ||
b64fcae7 | 1772 | int security_kernel_load_data(enum kernel_load_data_id id, bool contents) |
377179cd | 1773 | { |
16c267aa MZ |
1774 | int ret; |
1775 | ||
b64fcae7 | 1776 | ret = call_int_hook(kernel_load_data, 0, id, contents); |
16c267aa MZ |
1777 | if (ret) |
1778 | return ret; | |
b64fcae7 | 1779 | return ima_load_data(id, contents); |
377179cd | 1780 | } |
83a68a06 | 1781 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1782 | |
b64fcae7 KC |
1783 | int security_kernel_post_load_data(char *buf, loff_t size, |
1784 | enum kernel_load_data_id id, | |
1785 | char *description) | |
1786 | { | |
1787 | int ret; | |
1788 | ||
1789 | ret = call_int_hook(kernel_post_load_data, 0, buf, size, id, | |
1790 | description); | |
1791 | if (ret) | |
1792 | return ret; | |
1793 | return ima_post_load_data(buf, size, id, description); | |
1794 | } | |
1795 | EXPORT_SYMBOL_GPL(security_kernel_post_load_data); | |
1796 | ||
d84f4f99 DH |
1797 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1798 | int flags) | |
20510f2f | 1799 | { |
f25fce3e | 1800 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1801 | } |
1802 | ||
39030e13 TC |
1803 | int security_task_fix_setgid(struct cred *new, const struct cred *old, |
1804 | int flags) | |
1805 | { | |
1806 | return call_int_hook(task_fix_setgid, 0, new, old, flags); | |
1807 | } | |
1808 | ||
fcfe0ac2 MM |
1809 | int security_task_fix_setgroups(struct cred *new, const struct cred *old) |
1810 | { | |
1811 | return call_int_hook(task_fix_setgroups, 0, new, old); | |
1812 | } | |
1813 | ||
20510f2f JM |
1814 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1815 | { | |
f25fce3e | 1816 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1817 | } |
1818 | ||
1819 | int security_task_getpgid(struct task_struct *p) | |
1820 | { | |
f25fce3e | 1821 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1822 | } |
1823 | ||
1824 | int security_task_getsid(struct task_struct *p) | |
1825 | { | |
f25fce3e | 1826 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1827 | } |
1828 | ||
6326948f | 1829 | void security_current_getsecid_subj(u32 *secid) |
20510f2f | 1830 | { |
b1d9e6b0 | 1831 | *secid = 0; |
6326948f | 1832 | call_void_hook(current_getsecid_subj, secid); |
20510f2f | 1833 | } |
6326948f | 1834 | EXPORT_SYMBOL(security_current_getsecid_subj); |
4ebd7651 PM |
1835 | |
1836 | void security_task_getsecid_obj(struct task_struct *p, u32 *secid) | |
1837 | { | |
1838 | *secid = 0; | |
1839 | call_void_hook(task_getsecid_obj, p, secid); | |
1840 | } | |
1841 | EXPORT_SYMBOL(security_task_getsecid_obj); | |
20510f2f | 1842 | |
20510f2f JM |
1843 | int security_task_setnice(struct task_struct *p, int nice) |
1844 | { | |
f25fce3e | 1845 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1846 | } |
1847 | ||
1848 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1849 | { | |
f25fce3e | 1850 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1851 | } |
1852 | ||
1853 | int security_task_getioprio(struct task_struct *p) | |
1854 | { | |
f25fce3e | 1855 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1856 | } |
1857 | ||
791ec491 SS |
1858 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1859 | unsigned int flags) | |
1860 | { | |
1861 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1862 | } | |
1863 | ||
8fd00b4d JS |
1864 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1865 | struct rlimit *new_rlim) | |
20510f2f | 1866 | { |
f25fce3e | 1867 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1868 | } |
1869 | ||
b0ae1981 | 1870 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1871 | { |
f25fce3e | 1872 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1873 | } |
1874 | ||
1875 | int security_task_getscheduler(struct task_struct *p) | |
1876 | { | |
f25fce3e | 1877 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1878 | } |
1879 | ||
1880 | int security_task_movememory(struct task_struct *p) | |
1881 | { | |
f25fce3e | 1882 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1883 | } |
1884 | ||
ae7795bc | 1885 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 1886 | int sig, const struct cred *cred) |
20510f2f | 1887 | { |
6b4f3d01 | 1888 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
1889 | } |
1890 | ||
20510f2f | 1891 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1892 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1893 | { |
b1d9e6b0 | 1894 | int thisrc; |
98e828a0 | 1895 | int rc = LSM_RET_DEFAULT(task_prctl); |
b1d9e6b0 CS |
1896 | struct security_hook_list *hp; |
1897 | ||
df0ce173 | 1898 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 | 1899 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
98e828a0 | 1900 | if (thisrc != LSM_RET_DEFAULT(task_prctl)) { |
b1d9e6b0 CS |
1901 | rc = thisrc; |
1902 | if (thisrc != 0) | |
1903 | break; | |
1904 | } | |
1905 | } | |
1906 | return rc; | |
20510f2f JM |
1907 | } |
1908 | ||
1909 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1910 | { | |
f25fce3e | 1911 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1912 | } |
1913 | ||
7cd4c5c2 FL |
1914 | int security_create_user_ns(const struct cred *cred) |
1915 | { | |
1916 | return call_int_hook(userns_create, 0, cred); | |
1917 | } | |
20510f2f JM |
1918 | |
1919 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1920 | { | |
f25fce3e | 1921 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1922 | } |
1923 | ||
8a076191 AD |
1924 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
1925 | { | |
b1d9e6b0 | 1926 | *secid = 0; |
f25fce3e | 1927 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
1928 | } |
1929 | ||
20510f2f JM |
1930 | int security_msg_msg_alloc(struct msg_msg *msg) |
1931 | { | |
ecd5f82e CS |
1932 | int rc = lsm_msg_msg_alloc(msg); |
1933 | ||
1934 | if (unlikely(rc)) | |
1935 | return rc; | |
1936 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
1937 | if (unlikely(rc)) | |
1938 | security_msg_msg_free(msg); | |
1939 | return rc; | |
20510f2f JM |
1940 | } |
1941 | ||
1942 | void security_msg_msg_free(struct msg_msg *msg) | |
1943 | { | |
f25fce3e | 1944 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
1945 | kfree(msg->security); |
1946 | msg->security = NULL; | |
20510f2f JM |
1947 | } |
1948 | ||
d8c6e854 | 1949 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 1950 | { |
ecd5f82e CS |
1951 | int rc = lsm_ipc_alloc(msq); |
1952 | ||
1953 | if (unlikely(rc)) | |
1954 | return rc; | |
1955 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
1956 | if (unlikely(rc)) | |
1957 | security_msg_queue_free(msq); | |
1958 | return rc; | |
20510f2f JM |
1959 | } |
1960 | ||
d8c6e854 | 1961 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 1962 | { |
f25fce3e | 1963 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
1964 | kfree(msq->security); |
1965 | msq->security = NULL; | |
20510f2f JM |
1966 | } |
1967 | ||
d8c6e854 | 1968 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 1969 | { |
f25fce3e | 1970 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
1971 | } |
1972 | ||
d8c6e854 | 1973 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 1974 | { |
f25fce3e | 1975 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
1976 | } |
1977 | ||
d8c6e854 | 1978 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
1979 | struct msg_msg *msg, int msqflg) |
1980 | { | |
f25fce3e | 1981 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
1982 | } |
1983 | ||
d8c6e854 | 1984 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
1985 | struct task_struct *target, long type, int mode) |
1986 | { | |
f25fce3e | 1987 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
1988 | } |
1989 | ||
7191adff | 1990 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 1991 | { |
ecd5f82e CS |
1992 | int rc = lsm_ipc_alloc(shp); |
1993 | ||
1994 | if (unlikely(rc)) | |
1995 | return rc; | |
1996 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
1997 | if (unlikely(rc)) | |
1998 | security_shm_free(shp); | |
1999 | return rc; | |
20510f2f JM |
2000 | } |
2001 | ||
7191adff | 2002 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 2003 | { |
f25fce3e | 2004 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
2005 | kfree(shp->security); |
2006 | shp->security = NULL; | |
20510f2f JM |
2007 | } |
2008 | ||
7191adff | 2009 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 2010 | { |
f25fce3e | 2011 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
2012 | } |
2013 | ||
7191adff | 2014 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 2015 | { |
f25fce3e | 2016 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
2017 | } |
2018 | ||
7191adff | 2019 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 2020 | { |
f25fce3e | 2021 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
2022 | } |
2023 | ||
aefad959 | 2024 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 2025 | { |
ecd5f82e CS |
2026 | int rc = lsm_ipc_alloc(sma); |
2027 | ||
2028 | if (unlikely(rc)) | |
2029 | return rc; | |
2030 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
2031 | if (unlikely(rc)) | |
2032 | security_sem_free(sma); | |
2033 | return rc; | |
20510f2f JM |
2034 | } |
2035 | ||
aefad959 | 2036 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 2037 | { |
f25fce3e | 2038 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
2039 | kfree(sma->security); |
2040 | sma->security = NULL; | |
20510f2f JM |
2041 | } |
2042 | ||
aefad959 | 2043 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 2044 | { |
f25fce3e | 2045 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
2046 | } |
2047 | ||
aefad959 | 2048 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 2049 | { |
f25fce3e | 2050 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
2051 | } |
2052 | ||
aefad959 | 2053 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
2054 | unsigned nsops, int alter) |
2055 | { | |
f25fce3e | 2056 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
2057 | } |
2058 | ||
2059 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
2060 | { | |
2061 | if (unlikely(inode && IS_PRIVATE(inode))) | |
2062 | return; | |
f25fce3e | 2063 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
2064 | } |
2065 | EXPORT_SYMBOL(security_d_instantiate); | |
2066 | ||
c8e477c6 AV |
2067 | int security_getprocattr(struct task_struct *p, const char *lsm, |
2068 | const char *name, char **value) | |
20510f2f | 2069 | { |
6d9c939d CS |
2070 | struct security_hook_list *hp; |
2071 | ||
2072 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
2073 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
2074 | continue; | |
2075 | return hp->hook.getprocattr(p, name, value); | |
2076 | } | |
98e828a0 | 2077 | return LSM_RET_DEFAULT(getprocattr); |
20510f2f JM |
2078 | } |
2079 | ||
6d9c939d CS |
2080 | int security_setprocattr(const char *lsm, const char *name, void *value, |
2081 | size_t size) | |
20510f2f | 2082 | { |
6d9c939d CS |
2083 | struct security_hook_list *hp; |
2084 | ||
2085 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
2086 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
2087 | continue; | |
2088 | return hp->hook.setprocattr(name, value, size); | |
2089 | } | |
98e828a0 | 2090 | return LSM_RET_DEFAULT(setprocattr); |
20510f2f JM |
2091 | } |
2092 | ||
2093 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2094 | { | |
f25fce3e | 2095 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2096 | } |
20510f2f | 2097 | |
746df9b5 DQ |
2098 | int security_ismaclabel(const char *name) |
2099 | { | |
f25fce3e | 2100 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2101 | } |
2102 | EXPORT_SYMBOL(security_ismaclabel); | |
2103 | ||
20510f2f JM |
2104 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
2105 | { | |
0550cfe8 KS |
2106 | struct security_hook_list *hp; |
2107 | int rc; | |
2108 | ||
2109 | /* | |
2110 | * Currently, only one LSM can implement secid_to_secctx (i.e this | |
2111 | * LSM hook is not "stackable"). | |
2112 | */ | |
2113 | hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) { | |
2114 | rc = hp->hook.secid_to_secctx(secid, secdata, seclen); | |
2115 | if (rc != LSM_RET_DEFAULT(secid_to_secctx)) | |
2116 | return rc; | |
2117 | } | |
2118 | ||
2119 | return LSM_RET_DEFAULT(secid_to_secctx); | |
20510f2f JM |
2120 | } |
2121 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2122 | ||
7bf570dc | 2123 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 2124 | { |
b1d9e6b0 | 2125 | *secid = 0; |
f25fce3e | 2126 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
2127 | } |
2128 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2129 | ||
20510f2f JM |
2130 | void security_release_secctx(char *secdata, u32 seclen) |
2131 | { | |
f25fce3e | 2132 | call_void_hook(release_secctx, secdata, seclen); |
20510f2f JM |
2133 | } |
2134 | EXPORT_SYMBOL(security_release_secctx); | |
2135 | ||
6f3be9f5 AG |
2136 | void security_inode_invalidate_secctx(struct inode *inode) |
2137 | { | |
2138 | call_void_hook(inode_invalidate_secctx, inode); | |
2139 | } | |
2140 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2141 | ||
1ee65e37 DQ |
2142 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2143 | { | |
f25fce3e | 2144 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2145 | } |
2146 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2147 | ||
2148 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2149 | { | |
f25fce3e | 2150 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2151 | } |
2152 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2153 | ||
2154 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
2155 | { | |
b1d9e6b0 | 2156 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
2157 | } |
2158 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2159 | ||
344fa64e DH |
2160 | #ifdef CONFIG_WATCH_QUEUE |
2161 | int security_post_notification(const struct cred *w_cred, | |
2162 | const struct cred *cred, | |
2163 | struct watch_notification *n) | |
2164 | { | |
2165 | return call_int_hook(post_notification, 0, w_cred, cred, n); | |
2166 | } | |
2167 | #endif /* CONFIG_WATCH_QUEUE */ | |
2168 | ||
998f5040 DH |
2169 | #ifdef CONFIG_KEY_NOTIFICATIONS |
2170 | int security_watch_key(struct key *key) | |
2171 | { | |
2172 | return call_int_hook(watch_key, 0, key); | |
2173 | } | |
2174 | #endif | |
2175 | ||
20510f2f JM |
2176 | #ifdef CONFIG_SECURITY_NETWORK |
2177 | ||
3610cda5 | 2178 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2179 | { |
f25fce3e | 2180 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2181 | } |
2182 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2183 | ||
2184 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2185 | { | |
f25fce3e | 2186 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2187 | } |
2188 | EXPORT_SYMBOL(security_unix_may_send); | |
2189 | ||
2190 | int security_socket_create(int family, int type, int protocol, int kern) | |
2191 | { | |
f25fce3e | 2192 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2193 | } |
2194 | ||
2195 | int security_socket_post_create(struct socket *sock, int family, | |
2196 | int type, int protocol, int kern) | |
2197 | { | |
f25fce3e | 2198 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2199 | protocol, kern); |
2200 | } | |
2201 | ||
aae7cfcb DH |
2202 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
2203 | { | |
2204 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
2205 | } | |
2206 | EXPORT_SYMBOL(security_socket_socketpair); | |
2207 | ||
20510f2f JM |
2208 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
2209 | { | |
f25fce3e | 2210 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2211 | } |
2212 | ||
2213 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2214 | { | |
f25fce3e | 2215 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2216 | } |
2217 | ||
2218 | int security_socket_listen(struct socket *sock, int backlog) | |
2219 | { | |
f25fce3e | 2220 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2221 | } |
2222 | ||
2223 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2224 | { | |
f25fce3e | 2225 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2226 | } |
2227 | ||
20510f2f JM |
2228 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2229 | { | |
f25fce3e | 2230 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2231 | } |
2232 | ||
2233 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2234 | int size, int flags) | |
2235 | { | |
f25fce3e | 2236 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2237 | } |
2238 | ||
2239 | int security_socket_getsockname(struct socket *sock) | |
2240 | { | |
f25fce3e | 2241 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2242 | } |
2243 | ||
2244 | int security_socket_getpeername(struct socket *sock) | |
2245 | { | |
f25fce3e | 2246 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2247 | } |
2248 | ||
2249 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2250 | { | |
f25fce3e | 2251 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2252 | } |
2253 | ||
2254 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2255 | { | |
f25fce3e | 2256 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2257 | } |
2258 | ||
2259 | int security_socket_shutdown(struct socket *sock, int how) | |
2260 | { | |
f25fce3e | 2261 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2262 | } |
2263 | ||
2264 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2265 | { | |
f25fce3e | 2266 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2267 | } |
2268 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2269 | ||
2270 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
2271 | int __user *optlen, unsigned len) | |
2272 | { | |
b1d9e6b0 CS |
2273 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
2274 | optval, optlen, len); | |
20510f2f JM |
2275 | } |
2276 | ||
2277 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
2278 | { | |
e308fd3b JB |
2279 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
2280 | skb, secid); | |
20510f2f JM |
2281 | } |
2282 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2283 | ||
2284 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2285 | { | |
f25fce3e | 2286 | return call_int_hook(sk_alloc_security, 0, sk, family, priority); |
20510f2f JM |
2287 | } |
2288 | ||
2289 | void security_sk_free(struct sock *sk) | |
2290 | { | |
f25fce3e | 2291 | call_void_hook(sk_free_security, sk); |
20510f2f JM |
2292 | } |
2293 | ||
2294 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2295 | { | |
f25fce3e | 2296 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2297 | } |
6230c9b4 | 2298 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f | 2299 | |
3df98d79 | 2300 | void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic) |
20510f2f | 2301 | { |
3df98d79 | 2302 | call_void_hook(sk_getsecid, sk, &flic->flowic_secid); |
20510f2f JM |
2303 | } |
2304 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2305 | ||
3df98d79 PM |
2306 | void security_req_classify_flow(const struct request_sock *req, |
2307 | struct flowi_common *flic) | |
20510f2f | 2308 | { |
3df98d79 | 2309 | call_void_hook(req_classify_flow, req, flic); |
20510f2f JM |
2310 | } |
2311 | EXPORT_SYMBOL(security_req_classify_flow); | |
2312 | ||
2313 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2314 | { | |
f25fce3e | 2315 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2316 | } |
2317 | EXPORT_SYMBOL(security_sock_graft); | |
2318 | ||
41dd9596 | 2319 | int security_inet_conn_request(const struct sock *sk, |
20510f2f JM |
2320 | struct sk_buff *skb, struct request_sock *req) |
2321 | { | |
f25fce3e | 2322 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2323 | } |
2324 | EXPORT_SYMBOL(security_inet_conn_request); | |
2325 | ||
2326 | void security_inet_csk_clone(struct sock *newsk, | |
2327 | const struct request_sock *req) | |
2328 | { | |
f25fce3e | 2329 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2330 | } |
2331 | ||
2332 | void security_inet_conn_established(struct sock *sk, | |
2333 | struct sk_buff *skb) | |
2334 | { | |
f25fce3e | 2335 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2336 | } |
72e89f50 | 2337 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2338 | |
2606fd1f EP |
2339 | int security_secmark_relabel_packet(u32 secid) |
2340 | { | |
f25fce3e | 2341 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2342 | } |
2343 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2344 | ||
2345 | void security_secmark_refcount_inc(void) | |
2346 | { | |
f25fce3e | 2347 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2348 | } |
2349 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2350 | ||
2351 | void security_secmark_refcount_dec(void) | |
2352 | { | |
f25fce3e | 2353 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2354 | } |
2355 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2356 | ||
5dbbaf2d PM |
2357 | int security_tun_dev_alloc_security(void **security) |
2358 | { | |
f25fce3e | 2359 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2360 | } |
2361 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2362 | ||
2363 | void security_tun_dev_free_security(void *security) | |
2364 | { | |
f25fce3e | 2365 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2366 | } |
2367 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2368 | ||
2b980dbd PM |
2369 | int security_tun_dev_create(void) |
2370 | { | |
f25fce3e | 2371 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2372 | } |
2373 | EXPORT_SYMBOL(security_tun_dev_create); | |
2374 | ||
5dbbaf2d | 2375 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2376 | { |
f25fce3e | 2377 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2378 | } |
5dbbaf2d | 2379 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2380 | |
5dbbaf2d | 2381 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2382 | { |
f25fce3e | 2383 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2384 | } |
2385 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2386 | ||
5dbbaf2d PM |
2387 | int security_tun_dev_open(void *security) |
2388 | { | |
f25fce3e | 2389 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2390 | } |
2391 | EXPORT_SYMBOL(security_tun_dev_open); | |
2392 | ||
c081d53f | 2393 | int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb) |
72e89f50 | 2394 | { |
c081d53f | 2395 | return call_int_hook(sctp_assoc_request, 0, asoc, skb); |
72e89f50 RH |
2396 | } |
2397 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2398 | ||
2399 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2400 | struct sockaddr *address, int addrlen) | |
2401 | { | |
2402 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2403 | address, addrlen); | |
2404 | } | |
2405 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2406 | ||
c081d53f | 2407 | void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, |
72e89f50 RH |
2408 | struct sock *newsk) |
2409 | { | |
c081d53f | 2410 | call_void_hook(sctp_sk_clone, asoc, sk, newsk); |
72e89f50 RH |
2411 | } |
2412 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2413 | ||
5e50f5d4 OM |
2414 | int security_sctp_assoc_established(struct sctp_association *asoc, |
2415 | struct sk_buff *skb) | |
2416 | { | |
2417 | return call_int_hook(sctp_assoc_established, 0, asoc, skb); | |
2418 | } | |
2419 | EXPORT_SYMBOL(security_sctp_assoc_established); | |
2420 | ||
20510f2f JM |
2421 | #endif /* CONFIG_SECURITY_NETWORK */ |
2422 | ||
d291f1a6 DJ |
2423 | #ifdef CONFIG_SECURITY_INFINIBAND |
2424 | ||
2425 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2426 | { | |
2427 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2428 | } | |
2429 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2430 | ||
47a2b338 DJ |
2431 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2432 | { | |
2433 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2434 | } | |
2435 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2436 | ||
d291f1a6 DJ |
2437 | int security_ib_alloc_security(void **sec) |
2438 | { | |
2439 | return call_int_hook(ib_alloc_security, 0, sec); | |
2440 | } | |
2441 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2442 | ||
2443 | void security_ib_free_security(void *sec) | |
2444 | { | |
2445 | call_void_hook(ib_free_security, sec); | |
2446 | } | |
2447 | EXPORT_SYMBOL(security_ib_free_security); | |
2448 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2449 | ||
20510f2f JM |
2450 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2451 | ||
52a4c640 NA |
2452 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2453 | struct xfrm_user_sec_ctx *sec_ctx, | |
2454 | gfp_t gfp) | |
20510f2f | 2455 | { |
f25fce3e | 2456 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2457 | } |
2458 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2459 | ||
03e1ad7b PM |
2460 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2461 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2462 | { |
f25fce3e | 2463 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2464 | } |
2465 | ||
03e1ad7b | 2466 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2467 | { |
f25fce3e | 2468 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2469 | } |
2470 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2471 | ||
03e1ad7b | 2472 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2473 | { |
f25fce3e | 2474 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2475 | } |
2476 | ||
2e5aa866 PM |
2477 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2478 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2479 | { |
f25fce3e | 2480 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2481 | } |
2482 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2483 | ||
2484 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2485 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2486 | { | |
f25fce3e | 2487 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2488 | } |
2489 | ||
2490 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2491 | { | |
f25fce3e | 2492 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2493 | } |
2494 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2495 | ||
2496 | void security_xfrm_state_free(struct xfrm_state *x) | |
2497 | { | |
f25fce3e | 2498 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2499 | } |
2500 | ||
8a922805 | 2501 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) |
20510f2f | 2502 | { |
8a922805 | 2503 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid); |
20510f2f JM |
2504 | } |
2505 | ||
2506 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 | 2507 | struct xfrm_policy *xp, |
3df98d79 | 2508 | const struct flowi_common *flic) |
20510f2f | 2509 | { |
b1d9e6b0 | 2510 | struct security_hook_list *hp; |
98e828a0 | 2511 | int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match); |
b1d9e6b0 CS |
2512 | |
2513 | /* | |
2514 | * Since this function is expected to return 0 or 1, the judgment | |
2515 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2516 | * we can use the first LSM's judgment because currently only SELinux | |
2517 | * supplies this call. | |
2518 | * | |
2519 | * For speed optimization, we explicitly break the loop rather than | |
2520 | * using the macro | |
2521 | */ | |
df0ce173 | 2522 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 | 2523 | list) { |
3df98d79 | 2524 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic); |
b1d9e6b0 CS |
2525 | break; |
2526 | } | |
2527 | return rc; | |
20510f2f JM |
2528 | } |
2529 | ||
2530 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2531 | { | |
f25fce3e | 2532 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2533 | } |
2534 | ||
3df98d79 | 2535 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic) |
20510f2f | 2536 | { |
3df98d79 | 2537 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid, |
f25fce3e | 2538 | 0); |
20510f2f JM |
2539 | |
2540 | BUG_ON(rc); | |
2541 | } | |
2542 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2543 | ||
2544 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2545 | ||
2546 | #ifdef CONFIG_KEYS | |
2547 | ||
d84f4f99 DH |
2548 | int security_key_alloc(struct key *key, const struct cred *cred, |
2549 | unsigned long flags) | |
20510f2f | 2550 | { |
f25fce3e | 2551 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2552 | } |
2553 | ||
2554 | void security_key_free(struct key *key) | |
2555 | { | |
f25fce3e | 2556 | call_void_hook(key_free, key); |
20510f2f JM |
2557 | } |
2558 | ||
8c0637e9 DH |
2559 | int security_key_permission(key_ref_t key_ref, const struct cred *cred, |
2560 | enum key_need_perm need_perm) | |
20510f2f | 2561 | { |
8c0637e9 | 2562 | return call_int_hook(key_permission, 0, key_ref, cred, need_perm); |
20510f2f JM |
2563 | } |
2564 | ||
70a5bb72 DH |
2565 | int security_key_getsecurity(struct key *key, char **_buffer) |
2566 | { | |
b1d9e6b0 | 2567 | *_buffer = NULL; |
f25fce3e | 2568 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2569 | } |
2570 | ||
20510f2f | 2571 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2572 | |
2573 | #ifdef CONFIG_AUDIT | |
2574 | ||
2575 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2576 | { | |
f25fce3e | 2577 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
03d37d25 AD |
2578 | } |
2579 | ||
2580 | int security_audit_rule_known(struct audit_krule *krule) | |
2581 | { | |
f25fce3e | 2582 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2583 | } |
2584 | ||
2585 | void security_audit_rule_free(void *lsmrule) | |
2586 | { | |
f25fce3e | 2587 | call_void_hook(audit_rule_free, lsmrule); |
03d37d25 AD |
2588 | } |
2589 | ||
90462a5b | 2590 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule) |
03d37d25 | 2591 | { |
90462a5b | 2592 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule); |
03d37d25 | 2593 | } |
b1d9e6b0 | 2594 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2595 | |
2596 | #ifdef CONFIG_BPF_SYSCALL | |
2597 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2598 | { | |
2599 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2600 | } | |
2601 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2602 | { | |
2603 | return call_int_hook(bpf_map, 0, map, fmode); | |
2604 | } | |
2605 | int security_bpf_prog(struct bpf_prog *prog) | |
2606 | { | |
2607 | return call_int_hook(bpf_prog, 0, prog); | |
2608 | } | |
2609 | int security_bpf_map_alloc(struct bpf_map *map) | |
2610 | { | |
2611 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2612 | } | |
2613 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2614 | { | |
2615 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2616 | } | |
2617 | void security_bpf_map_free(struct bpf_map *map) | |
2618 | { | |
2619 | call_void_hook(bpf_map_free_security, map); | |
2620 | } | |
2621 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2622 | { | |
2623 | call_void_hook(bpf_prog_free_security, aux); | |
2624 | } | |
2625 | #endif /* CONFIG_BPF_SYSCALL */ | |
9e47d31d MG |
2626 | |
2627 | int security_locked_down(enum lockdown_reason what) | |
2628 | { | |
2629 | return call_int_hook(locked_down, 0, what); | |
2630 | } | |
2631 | EXPORT_SYMBOL(security_locked_down); | |
da97e184 JFG |
2632 | |
2633 | #ifdef CONFIG_PERF_EVENTS | |
2634 | int security_perf_event_open(struct perf_event_attr *attr, int type) | |
2635 | { | |
2636 | return call_int_hook(perf_event_open, 0, attr, type); | |
2637 | } | |
2638 | ||
2639 | int security_perf_event_alloc(struct perf_event *event) | |
2640 | { | |
2641 | return call_int_hook(perf_event_alloc, 0, event); | |
2642 | } | |
2643 | ||
2644 | void security_perf_event_free(struct perf_event *event) | |
2645 | { | |
2646 | call_void_hook(perf_event_free, event); | |
2647 | } | |
2648 | ||
2649 | int security_perf_event_read(struct perf_event *event) | |
2650 | { | |
2651 | return call_int_hook(perf_event_read, 0, event); | |
2652 | } | |
2653 | ||
2654 | int security_perf_event_write(struct perf_event *event) | |
2655 | { | |
2656 | return call_int_hook(perf_event_write, 0, event); | |
2657 | } | |
2658 | #endif /* CONFIG_PERF_EVENTS */ | |
cdc1404a PM |
2659 | |
2660 | #ifdef CONFIG_IO_URING | |
2661 | int security_uring_override_creds(const struct cred *new) | |
2662 | { | |
2663 | return call_int_hook(uring_override_creds, 0, new); | |
2664 | } | |
2665 | ||
2666 | int security_uring_sqpoll(void) | |
2667 | { | |
2668 | return call_int_hook(uring_sqpoll, 0); | |
2669 | } | |
2a584012 LC |
2670 | int security_uring_cmd(struct io_uring_cmd *ioucmd) |
2671 | { | |
2672 | return call_int_hook(uring_cmd, 0, ioucmd); | |
2673 | } | |
cdc1404a | 2674 | #endif /* CONFIG_IO_URING */ |