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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 | |
86ef3c73 KC |
164 | init_debug("%s ordered: %s (%s)\n", from, lsm->name, |
165 | is_enabled(lsm) ? "enabled" : "disabled"); | |
2d4d5119 KC |
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 | ||
b9f5ce27 GN |
188 | if (*need <= 0) |
189 | return; | |
190 | ||
191 | offset = ALIGN(*lbs, sizeof(void *)); | |
192 | *lbs = offset + *need; | |
193 | *need = offset; | |
bbd3662a CS |
194 | } |
195 | ||
196 | static void __init lsm_set_blob_sizes(struct lsm_blob_sizes *needed) | |
197 | { | |
198 | if (!needed) | |
199 | return; | |
200 | ||
201 | lsm_set_blob_size(&needed->lbs_cred, &blob_sizes.lbs_cred); | |
33bf60ca | 202 | lsm_set_blob_size(&needed->lbs_file, &blob_sizes.lbs_file); |
afb1cbe3 CS |
203 | /* |
204 | * The inode blob gets an rcu_head in addition to | |
205 | * what the modules might need. | |
206 | */ | |
207 | if (needed->lbs_inode && blob_sizes.lbs_inode == 0) | |
208 | blob_sizes.lbs_inode = sizeof(struct rcu_head); | |
209 | lsm_set_blob_size(&needed->lbs_inode, &blob_sizes.lbs_inode); | |
ecd5f82e CS |
210 | lsm_set_blob_size(&needed->lbs_ipc, &blob_sizes.lbs_ipc); |
211 | lsm_set_blob_size(&needed->lbs_msg_msg, &blob_sizes.lbs_msg_msg); | |
1aea7808 | 212 | lsm_set_blob_size(&needed->lbs_superblock, &blob_sizes.lbs_superblock); |
f4ad8f2c | 213 | lsm_set_blob_size(&needed->lbs_task, &blob_sizes.lbs_task); |
bbd3662a CS |
214 | } |
215 | ||
d8e9bbd4 KC |
216 | /* Prepare LSM for initialization. */ |
217 | static void __init prepare_lsm(struct lsm_info *lsm) | |
f4941d75 KC |
218 | { |
219 | int enabled = lsm_allowed(lsm); | |
220 | ||
221 | /* Record enablement (to handle any following exclusive LSMs). */ | |
222 | set_enabled(lsm, enabled); | |
223 | ||
d8e9bbd4 | 224 | /* If enabled, do pre-initialization work. */ |
f4941d75 | 225 | if (enabled) { |
14bd99c8 KC |
226 | if ((lsm->flags & LSM_FLAG_EXCLUSIVE) && !exclusive) { |
227 | exclusive = lsm; | |
86ef3c73 | 228 | init_debug("exclusive chosen: %s\n", lsm->name); |
14bd99c8 | 229 | } |
bbd3662a CS |
230 | |
231 | lsm_set_blob_sizes(lsm->blobs); | |
d8e9bbd4 KC |
232 | } |
233 | } | |
234 | ||
235 | /* Initialize a given LSM, if it is enabled. */ | |
236 | static void __init initialize_lsm(struct lsm_info *lsm) | |
237 | { | |
238 | if (is_enabled(lsm)) { | |
239 | int ret; | |
14bd99c8 | 240 | |
f4941d75 KC |
241 | init_debug("initializing %s\n", lsm->name); |
242 | ret = lsm->init(); | |
243 | WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret); | |
244 | } | |
245 | } | |
246 | ||
13e735c0 | 247 | /* Populate ordered LSMs list from comma-separated LSM name list. */ |
2d4d5119 | 248 | static void __init ordered_lsm_parse(const char *order, const char *origin) |
657d910b KC |
249 | { |
250 | struct lsm_info *lsm; | |
13e735c0 KC |
251 | char *sep, *name, *next; |
252 | ||
e2bc445b KC |
253 | /* LSM_ORDER_FIRST is always first. */ |
254 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
255 | if (lsm->order == LSM_ORDER_FIRST) | |
86ef3c73 | 256 | append_ordered_lsm(lsm, " first"); |
e2bc445b KC |
257 | } |
258 | ||
7e611486 | 259 | /* Process "security=", if given. */ |
7e611486 KC |
260 | if (chosen_major_lsm) { |
261 | struct lsm_info *major; | |
262 | ||
263 | /* | |
264 | * To match the original "security=" behavior, this | |
265 | * explicitly does NOT fallback to another Legacy Major | |
266 | * if the selected one was separately disabled: disable | |
267 | * all non-matching Legacy Major LSMs. | |
268 | */ | |
269 | for (major = __start_lsm_info; major < __end_lsm_info; | |
270 | major++) { | |
271 | if ((major->flags & LSM_FLAG_LEGACY_MAJOR) && | |
272 | strcmp(major->name, chosen_major_lsm) != 0) { | |
273 | set_enabled(major, false); | |
86ef3c73 | 274 | init_debug("security=%s disabled: %s (only one legacy major LSM)\n", |
7e611486 KC |
275 | chosen_major_lsm, major->name); |
276 | } | |
277 | } | |
278 | } | |
5ef4e419 | 279 | |
13e735c0 KC |
280 | sep = kstrdup(order, GFP_KERNEL); |
281 | next = sep; | |
282 | /* Walk the list, looking for matching LSMs. */ | |
283 | while ((name = strsep(&next, ",")) != NULL) { | |
284 | bool found = false; | |
285 | ||
286 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
e2bc445b KC |
287 | if (lsm->order == LSM_ORDER_MUTABLE && |
288 | strcmp(lsm->name, name) == 0) { | |
13e735c0 KC |
289 | append_ordered_lsm(lsm, origin); |
290 | found = true; | |
291 | } | |
292 | } | |
293 | ||
294 | if (!found) | |
86ef3c73 KC |
295 | init_debug("%s ignored: %s (not built into kernel)\n", |
296 | origin, name); | |
657d910b | 297 | } |
c91d8106 CS |
298 | |
299 | /* Process "security=", if given. */ | |
300 | if (chosen_major_lsm) { | |
301 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
302 | if (exists_ordered_lsm(lsm)) | |
303 | continue; | |
304 | if (strcmp(lsm->name, chosen_major_lsm) == 0) | |
305 | append_ordered_lsm(lsm, "security="); | |
306 | } | |
307 | } | |
308 | ||
309 | /* Disable all LSMs not in the ordered list. */ | |
310 | for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) { | |
311 | if (exists_ordered_lsm(lsm)) | |
312 | continue; | |
313 | set_enabled(lsm, false); | |
86ef3c73 KC |
314 | init_debug("%s skipped: %s (not in requested order)\n", |
315 | origin, lsm->name); | |
c91d8106 CS |
316 | } |
317 | ||
13e735c0 | 318 | kfree(sep); |
657d910b KC |
319 | } |
320 | ||
1cfb2a51 TH |
321 | static void __init lsm_early_cred(struct cred *cred); |
322 | static void __init lsm_early_task(struct task_struct *task); | |
323 | ||
e6b1db98 MG |
324 | static int lsm_append(const char *new, char **result); |
325 | ||
86ef3c73 KC |
326 | static void __init report_lsm_order(void) |
327 | { | |
328 | struct lsm_info **lsm, *early; | |
329 | int first = 0; | |
330 | ||
331 | pr_info("initializing lsm="); | |
332 | ||
333 | /* Report each enabled LSM name, comma separated. */ | |
334 | for (early = __start_early_lsm_info; early < __end_early_lsm_info; early++) | |
335 | if (is_enabled(early)) | |
336 | pr_cont("%s%s", first++ == 0 ? "" : ",", early->name); | |
337 | for (lsm = ordered_lsms; *lsm; lsm++) | |
338 | if (is_enabled(*lsm)) | |
339 | pr_cont("%s%s", first++ == 0 ? "" : ",", (*lsm)->name); | |
340 | ||
341 | pr_cont("\n"); | |
342 | } | |
343 | ||
2d4d5119 KC |
344 | static void __init ordered_lsm_init(void) |
345 | { | |
346 | struct lsm_info **lsm; | |
347 | ||
348 | ordered_lsms = kcalloc(LSM_COUNT + 1, sizeof(*ordered_lsms), | |
349 | GFP_KERNEL); | |
350 | ||
89a9684e KC |
351 | if (chosen_lsm_order) { |
352 | if (chosen_major_lsm) { | |
86ef3c73 KC |
353 | pr_warn("security=%s is ignored because it is superseded by lsm=%s\n", |
354 | chosen_major_lsm, chosen_lsm_order); | |
89a9684e KC |
355 | chosen_major_lsm = NULL; |
356 | } | |
79f7865d | 357 | ordered_lsm_parse(chosen_lsm_order, "cmdline"); |
89a9684e | 358 | } else |
79f7865d | 359 | ordered_lsm_parse(builtin_lsm_order, "builtin"); |
2d4d5119 KC |
360 | |
361 | for (lsm = ordered_lsms; *lsm; lsm++) | |
d8e9bbd4 KC |
362 | prepare_lsm(*lsm); |
363 | ||
86ef3c73 KC |
364 | report_lsm_order(); |
365 | ||
1aea7808 CS |
366 | init_debug("cred blob size = %d\n", blob_sizes.lbs_cred); |
367 | init_debug("file blob size = %d\n", blob_sizes.lbs_file); | |
368 | init_debug("inode blob size = %d\n", blob_sizes.lbs_inode); | |
369 | init_debug("ipc blob size = %d\n", blob_sizes.lbs_ipc); | |
370 | init_debug("msg_msg blob size = %d\n", blob_sizes.lbs_msg_msg); | |
371 | init_debug("superblock blob size = %d\n", blob_sizes.lbs_superblock); | |
372 | init_debug("task blob size = %d\n", blob_sizes.lbs_task); | |
33bf60ca CS |
373 | |
374 | /* | |
375 | * Create any kmem_caches needed for blobs | |
376 | */ | |
377 | if (blob_sizes.lbs_file) | |
378 | lsm_file_cache = kmem_cache_create("lsm_file_cache", | |
379 | blob_sizes.lbs_file, 0, | |
380 | SLAB_PANIC, NULL); | |
afb1cbe3 CS |
381 | if (blob_sizes.lbs_inode) |
382 | lsm_inode_cache = kmem_cache_create("lsm_inode_cache", | |
383 | blob_sizes.lbs_inode, 0, | |
384 | SLAB_PANIC, NULL); | |
bbd3662a | 385 | |
1cfb2a51 TH |
386 | lsm_early_cred((struct cred *) current->cred); |
387 | lsm_early_task(current); | |
d8e9bbd4 KC |
388 | for (lsm = ordered_lsms; *lsm; lsm++) |
389 | initialize_lsm(*lsm); | |
2d4d5119 KC |
390 | |
391 | kfree(ordered_lsms); | |
392 | } | |
393 | ||
e6b1db98 MG |
394 | int __init early_security_init(void) |
395 | { | |
e6b1db98 MG |
396 | struct lsm_info *lsm; |
397 | ||
75c1182e BW |
398 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ |
399 | INIT_HLIST_HEAD(&security_hook_heads.NAME); | |
400 | #include "linux/lsm_hook_defs.h" | |
401 | #undef LSM_HOOK | |
e6b1db98 MG |
402 | |
403 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
404 | if (!lsm->enabled) | |
405 | lsm->enabled = &lsm_enabled_true; | |
406 | prepare_lsm(lsm); | |
407 | initialize_lsm(lsm); | |
408 | } | |
409 | ||
410 | return 0; | |
411 | } | |
412 | ||
1da177e4 LT |
413 | /** |
414 | * security_init - initializes the security framework | |
415 | * | |
416 | * This should be called early in the kernel initialization sequence. | |
417 | */ | |
418 | int __init security_init(void) | |
419 | { | |
e6b1db98 | 420 | struct lsm_info *lsm; |
3dfc9b02 | 421 | |
86ef3c73 KC |
422 | init_debug("legacy security=%s\n", chosen_major_lsm ?: " *unspecified*"); |
423 | init_debug(" CONFIG_LSM=%s\n", builtin_lsm_order); | |
424 | init_debug("boot arg lsm=%s\n", chosen_lsm_order ?: " *unspecified*"); | |
98d29170 | 425 | |
e6b1db98 MG |
426 | /* |
427 | * Append the names of the early LSM modules now that kmalloc() is | |
428 | * available | |
429 | */ | |
430 | for (lsm = __start_early_lsm_info; lsm < __end_early_lsm_info; lsm++) { | |
86ef3c73 KC |
431 | init_debug(" early started: %s (%s)\n", lsm->name, |
432 | is_enabled(lsm) ? "enabled" : "disabled"); | |
e6b1db98 MG |
433 | if (lsm->enabled) |
434 | lsm_append(lsm->name, &lsm_names); | |
435 | } | |
1da177e4 | 436 | |
657d910b KC |
437 | /* Load LSMs in specified order. */ |
438 | ordered_lsm_init(); | |
439 | ||
1da177e4 LT |
440 | return 0; |
441 | } | |
442 | ||
076c54c5 | 443 | /* Save user chosen LSM */ |
5ef4e419 | 444 | static int __init choose_major_lsm(char *str) |
076c54c5 | 445 | { |
5ef4e419 | 446 | chosen_major_lsm = str; |
076c54c5 AD |
447 | return 1; |
448 | } | |
5ef4e419 | 449 | __setup("security=", choose_major_lsm); |
076c54c5 | 450 | |
79f7865d KC |
451 | /* Explicitly choose LSM initialization order. */ |
452 | static int __init choose_lsm_order(char *str) | |
453 | { | |
454 | chosen_lsm_order = str; | |
455 | return 1; | |
456 | } | |
457 | __setup("lsm=", choose_lsm_order); | |
458 | ||
9b8c7c14 KC |
459 | /* Enable LSM order debugging. */ |
460 | static int __init enable_debug(char *str) | |
461 | { | |
462 | debug = true; | |
463 | return 1; | |
464 | } | |
465 | __setup("lsm.debug", enable_debug); | |
466 | ||
3bb857e4 MS |
467 | static bool match_last_lsm(const char *list, const char *lsm) |
468 | { | |
469 | const char *last; | |
470 | ||
471 | if (WARN_ON(!list || !lsm)) | |
472 | return false; | |
473 | last = strrchr(list, ','); | |
474 | if (last) | |
475 | /* Pass the comma, strcmp() will check for '\0' */ | |
476 | last++; | |
477 | else | |
478 | last = list; | |
479 | return !strcmp(last, lsm); | |
480 | } | |
481 | ||
e6b1db98 | 482 | static int lsm_append(const char *new, char **result) |
d69dece5 CS |
483 | { |
484 | char *cp; | |
485 | ||
486 | if (*result == NULL) { | |
487 | *result = kstrdup(new, GFP_KERNEL); | |
87ea5843 EB |
488 | if (*result == NULL) |
489 | return -ENOMEM; | |
d69dece5 | 490 | } else { |
3bb857e4 MS |
491 | /* Check if it is the last registered name */ |
492 | if (match_last_lsm(*result, new)) | |
493 | return 0; | |
d69dece5 CS |
494 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); |
495 | if (cp == NULL) | |
496 | return -ENOMEM; | |
497 | kfree(*result); | |
498 | *result = cp; | |
499 | } | |
500 | return 0; | |
501 | } | |
502 | ||
d69dece5 CS |
503 | /** |
504 | * security_add_hooks - Add a modules hooks to the hook lists. | |
505 | * @hooks: the hooks to add | |
506 | * @count: the number of hooks to add | |
507 | * @lsm: the name of the security module | |
508 | * | |
509 | * Each LSM has to register its hooks with the infrastructure. | |
510 | */ | |
511 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
1af0e4a0 | 512 | const char *lsm) |
d69dece5 CS |
513 | { |
514 | int i; | |
515 | ||
516 | for (i = 0; i < count; i++) { | |
517 | hooks[i].lsm = lsm; | |
df0ce173 | 518 | hlist_add_tail_rcu(&hooks[i].list, hooks[i].head); |
d69dece5 | 519 | } |
e6b1db98 MG |
520 | |
521 | /* | |
522 | * Don't try to append during early_security_init(), we'll come back | |
523 | * and fix this up afterwards. | |
524 | */ | |
525 | if (slab_is_available()) { | |
526 | if (lsm_append(lsm, &lsm_names) < 0) | |
527 | panic("%s - Cannot get early memory.\n", __func__); | |
528 | } | |
d69dece5 CS |
529 | } |
530 | ||
42df744c | 531 | int call_blocking_lsm_notifier(enum lsm_event event, void *data) |
8f408ab6 | 532 | { |
42df744c JK |
533 | return blocking_notifier_call_chain(&blocking_lsm_notifier_chain, |
534 | event, data); | |
8f408ab6 | 535 | } |
42df744c | 536 | EXPORT_SYMBOL(call_blocking_lsm_notifier); |
8f408ab6 | 537 | |
42df744c | 538 | int register_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 539 | { |
42df744c JK |
540 | return blocking_notifier_chain_register(&blocking_lsm_notifier_chain, |
541 | nb); | |
8f408ab6 | 542 | } |
42df744c | 543 | EXPORT_SYMBOL(register_blocking_lsm_notifier); |
8f408ab6 | 544 | |
42df744c | 545 | int unregister_blocking_lsm_notifier(struct notifier_block *nb) |
8f408ab6 | 546 | { |
42df744c JK |
547 | return blocking_notifier_chain_unregister(&blocking_lsm_notifier_chain, |
548 | nb); | |
8f408ab6 | 549 | } |
42df744c | 550 | EXPORT_SYMBOL(unregister_blocking_lsm_notifier); |
8f408ab6 | 551 | |
bbd3662a CS |
552 | /** |
553 | * lsm_cred_alloc - allocate a composite cred blob | |
554 | * @cred: the cred that needs a blob | |
555 | * @gfp: allocation type | |
556 | * | |
557 | * Allocate the cred blob for all the modules | |
558 | * | |
559 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
560 | */ | |
561 | static int lsm_cred_alloc(struct cred *cred, gfp_t gfp) | |
562 | { | |
563 | if (blob_sizes.lbs_cred == 0) { | |
564 | cred->security = NULL; | |
565 | return 0; | |
566 | } | |
567 | ||
568 | cred->security = kzalloc(blob_sizes.lbs_cred, gfp); | |
569 | if (cred->security == NULL) | |
570 | return -ENOMEM; | |
571 | return 0; | |
572 | } | |
573 | ||
574 | /** | |
575 | * lsm_early_cred - during initialization allocate a composite cred blob | |
576 | * @cred: the cred that needs a blob | |
577 | * | |
1cfb2a51 | 578 | * Allocate the cred blob for all the modules |
bbd3662a | 579 | */ |
1cfb2a51 | 580 | static void __init lsm_early_cred(struct cred *cred) |
bbd3662a | 581 | { |
1cfb2a51 | 582 | int rc = lsm_cred_alloc(cred, GFP_KERNEL); |
bbd3662a | 583 | |
bbd3662a CS |
584 | if (rc) |
585 | panic("%s: Early cred alloc failed.\n", __func__); | |
586 | } | |
587 | ||
33bf60ca CS |
588 | /** |
589 | * lsm_file_alloc - allocate a composite file blob | |
590 | * @file: the file that needs a blob | |
591 | * | |
592 | * Allocate the file blob for all the modules | |
593 | * | |
594 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
595 | */ | |
596 | static int lsm_file_alloc(struct file *file) | |
597 | { | |
598 | if (!lsm_file_cache) { | |
599 | file->f_security = NULL; | |
600 | return 0; | |
601 | } | |
602 | ||
603 | file->f_security = kmem_cache_zalloc(lsm_file_cache, GFP_KERNEL); | |
604 | if (file->f_security == NULL) | |
605 | return -ENOMEM; | |
606 | return 0; | |
607 | } | |
608 | ||
afb1cbe3 CS |
609 | /** |
610 | * lsm_inode_alloc - allocate a composite inode blob | |
611 | * @inode: the inode that needs a blob | |
612 | * | |
613 | * Allocate the inode blob for all the modules | |
614 | * | |
615 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
616 | */ | |
617 | int lsm_inode_alloc(struct inode *inode) | |
618 | { | |
619 | if (!lsm_inode_cache) { | |
620 | inode->i_security = NULL; | |
621 | return 0; | |
622 | } | |
623 | ||
624 | inode->i_security = kmem_cache_zalloc(lsm_inode_cache, GFP_NOFS); | |
625 | if (inode->i_security == NULL) | |
626 | return -ENOMEM; | |
627 | return 0; | |
628 | } | |
629 | ||
f4ad8f2c CS |
630 | /** |
631 | * lsm_task_alloc - allocate a composite task blob | |
632 | * @task: the task that needs a blob | |
633 | * | |
634 | * Allocate the task blob for all the modules | |
635 | * | |
636 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
637 | */ | |
3e8c7367 | 638 | static int lsm_task_alloc(struct task_struct *task) |
f4ad8f2c CS |
639 | { |
640 | if (blob_sizes.lbs_task == 0) { | |
641 | task->security = NULL; | |
642 | return 0; | |
643 | } | |
644 | ||
645 | task->security = kzalloc(blob_sizes.lbs_task, GFP_KERNEL); | |
646 | if (task->security == NULL) | |
647 | return -ENOMEM; | |
648 | return 0; | |
649 | } | |
650 | ||
ecd5f82e CS |
651 | /** |
652 | * lsm_ipc_alloc - allocate a composite ipc blob | |
653 | * @kip: the ipc that needs a blob | |
654 | * | |
655 | * Allocate the ipc blob for all the modules | |
656 | * | |
657 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
658 | */ | |
3e8c7367 | 659 | static int lsm_ipc_alloc(struct kern_ipc_perm *kip) |
ecd5f82e CS |
660 | { |
661 | if (blob_sizes.lbs_ipc == 0) { | |
662 | kip->security = NULL; | |
663 | return 0; | |
664 | } | |
665 | ||
666 | kip->security = kzalloc(blob_sizes.lbs_ipc, GFP_KERNEL); | |
667 | if (kip->security == NULL) | |
668 | return -ENOMEM; | |
669 | return 0; | |
670 | } | |
671 | ||
672 | /** | |
673 | * lsm_msg_msg_alloc - allocate a composite msg_msg blob | |
674 | * @mp: the msg_msg that needs a blob | |
675 | * | |
676 | * Allocate the ipc blob for all the modules | |
677 | * | |
678 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
679 | */ | |
3e8c7367 | 680 | static int lsm_msg_msg_alloc(struct msg_msg *mp) |
ecd5f82e CS |
681 | { |
682 | if (blob_sizes.lbs_msg_msg == 0) { | |
683 | mp->security = NULL; | |
684 | return 0; | |
685 | } | |
686 | ||
687 | mp->security = kzalloc(blob_sizes.lbs_msg_msg, GFP_KERNEL); | |
688 | if (mp->security == NULL) | |
689 | return -ENOMEM; | |
690 | return 0; | |
691 | } | |
692 | ||
f4ad8f2c CS |
693 | /** |
694 | * lsm_early_task - during initialization allocate a composite task blob | |
695 | * @task: the task that needs a blob | |
696 | * | |
1cfb2a51 | 697 | * Allocate the task blob for all the modules |
f4ad8f2c | 698 | */ |
1cfb2a51 | 699 | static void __init lsm_early_task(struct task_struct *task) |
f4ad8f2c | 700 | { |
1cfb2a51 | 701 | int rc = lsm_task_alloc(task); |
f4ad8f2c | 702 | |
f4ad8f2c CS |
703 | if (rc) |
704 | panic("%s: Early task alloc failed.\n", __func__); | |
705 | } | |
706 | ||
1aea7808 CS |
707 | /** |
708 | * lsm_superblock_alloc - allocate a composite superblock blob | |
709 | * @sb: the superblock that needs a blob | |
710 | * | |
711 | * Allocate the superblock blob for all the modules | |
712 | * | |
713 | * Returns 0, or -ENOMEM if memory can't be allocated. | |
714 | */ | |
715 | static int lsm_superblock_alloc(struct super_block *sb) | |
716 | { | |
717 | if (blob_sizes.lbs_superblock == 0) { | |
718 | sb->s_security = NULL; | |
719 | return 0; | |
720 | } | |
721 | ||
722 | sb->s_security = kzalloc(blob_sizes.lbs_superblock, GFP_KERNEL); | |
723 | if (sb->s_security == NULL) | |
724 | return -ENOMEM; | |
725 | return 0; | |
726 | } | |
727 | ||
98e828a0 KS |
728 | /* |
729 | * The default value of the LSM hook is defined in linux/lsm_hook_defs.h and | |
730 | * can be accessed with: | |
731 | * | |
732 | * LSM_RET_DEFAULT(<hook_name>) | |
733 | * | |
734 | * The macros below define static constants for the default value of each | |
735 | * LSM hook. | |
736 | */ | |
737 | #define LSM_RET_DEFAULT(NAME) (NAME##_default) | |
738 | #define DECLARE_LSM_RET_DEFAULT_void(DEFAULT, NAME) | |
739 | #define DECLARE_LSM_RET_DEFAULT_int(DEFAULT, NAME) \ | |
86dd9fd5 | 740 | static const int __maybe_unused LSM_RET_DEFAULT(NAME) = (DEFAULT); |
98e828a0 KS |
741 | #define LSM_HOOK(RET, DEFAULT, NAME, ...) \ |
742 | DECLARE_LSM_RET_DEFAULT_##RET(DEFAULT, NAME) | |
743 | ||
744 | #include <linux/lsm_hook_defs.h> | |
745 | #undef LSM_HOOK | |
746 | ||
f25fce3e | 747 | /* |
b1d9e6b0 | 748 | * Hook list operation macros. |
1da177e4 | 749 | * |
f25fce3e CS |
750 | * call_void_hook: |
751 | * This is a hook that does not return a value. | |
1da177e4 | 752 | * |
f25fce3e CS |
753 | * call_int_hook: |
754 | * This is a hook that returns a value. | |
1da177e4 | 755 | */ |
1da177e4 | 756 | |
b1d9e6b0 CS |
757 | #define call_void_hook(FUNC, ...) \ |
758 | do { \ | |
759 | struct security_hook_list *P; \ | |
760 | \ | |
df0ce173 | 761 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \ |
b1d9e6b0 CS |
762 | P->hook.FUNC(__VA_ARGS__); \ |
763 | } while (0) | |
764 | ||
765 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
766 | int RC = IRC; \ | |
767 | do { \ | |
768 | struct security_hook_list *P; \ | |
769 | \ | |
df0ce173 | 770 | hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \ |
b1d9e6b0 CS |
771 | RC = P->hook.FUNC(__VA_ARGS__); \ |
772 | if (RC != 0) \ | |
773 | break; \ | |
774 | } \ | |
775 | } while (0); \ | |
776 | RC; \ | |
777 | }) | |
1da177e4 | 778 | |
20510f2f JM |
779 | /* Security operations */ |
780 | ||
52f88693 | 781 | int security_binder_set_context_mgr(const struct cred *mgr) |
79af7307 | 782 | { |
f25fce3e | 783 | return call_int_hook(binder_set_context_mgr, 0, mgr); |
79af7307 SS |
784 | } |
785 | ||
52f88693 TK |
786 | int security_binder_transaction(const struct cred *from, |
787 | const struct cred *to) | |
79af7307 | 788 | { |
f25fce3e | 789 | return call_int_hook(binder_transaction, 0, from, to); |
79af7307 SS |
790 | } |
791 | ||
52f88693 TK |
792 | int security_binder_transfer_binder(const struct cred *from, |
793 | const struct cred *to) | |
79af7307 | 794 | { |
f25fce3e | 795 | return call_int_hook(binder_transfer_binder, 0, from, to); |
79af7307 SS |
796 | } |
797 | ||
52f88693 TK |
798 | int security_binder_transfer_file(const struct cred *from, |
799 | const struct cred *to, struct file *file) | |
79af7307 | 800 | { |
f25fce3e | 801 | return call_int_hook(binder_transfer_file, 0, from, to, file); |
79af7307 SS |
802 | } |
803 | ||
9e48858f | 804 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) |
20510f2f | 805 | { |
f25fce3e | 806 | return call_int_hook(ptrace_access_check, 0, child, mode); |
5cd9c58f DH |
807 | } |
808 | ||
809 | int security_ptrace_traceme(struct task_struct *parent) | |
810 | { | |
f25fce3e | 811 | return call_int_hook(ptrace_traceme, 0, parent); |
20510f2f JM |
812 | } |
813 | ||
814 | int security_capget(struct task_struct *target, | |
815 | kernel_cap_t *effective, | |
816 | kernel_cap_t *inheritable, | |
817 | kernel_cap_t *permitted) | |
818 | { | |
f25fce3e CS |
819 | return call_int_hook(capget, 0, target, |
820 | effective, inheritable, permitted); | |
20510f2f JM |
821 | } |
822 | ||
d84f4f99 DH |
823 | int security_capset(struct cred *new, const struct cred *old, |
824 | const kernel_cap_t *effective, | |
825 | const kernel_cap_t *inheritable, | |
826 | const kernel_cap_t *permitted) | |
20510f2f | 827 | { |
f25fce3e CS |
828 | return call_int_hook(capset, 0, new, old, |
829 | effective, inheritable, permitted); | |
20510f2f JM |
830 | } |
831 | ||
c1a85a00 MM |
832 | int security_capable(const struct cred *cred, |
833 | struct user_namespace *ns, | |
834 | int cap, | |
835 | unsigned int opts) | |
20510f2f | 836 | { |
c1a85a00 | 837 | return call_int_hook(capable, 0, cred, ns, cap, opts); |
20510f2f JM |
838 | } |
839 | ||
20510f2f JM |
840 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) |
841 | { | |
f25fce3e | 842 | return call_int_hook(quotactl, 0, cmds, type, id, sb); |
20510f2f JM |
843 | } |
844 | ||
845 | int security_quota_on(struct dentry *dentry) | |
846 | { | |
f25fce3e | 847 | return call_int_hook(quota_on, 0, dentry); |
20510f2f JM |
848 | } |
849 | ||
12b3052c | 850 | int security_syslog(int type) |
20510f2f | 851 | { |
f25fce3e | 852 | return call_int_hook(syslog, 0, type); |
20510f2f JM |
853 | } |
854 | ||
457db29b | 855 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) |
20510f2f | 856 | { |
f25fce3e | 857 | return call_int_hook(settime, 0, ts, tz); |
20510f2f JM |
858 | } |
859 | ||
20510f2f JM |
860 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) |
861 | { | |
b1d9e6b0 CS |
862 | struct security_hook_list *hp; |
863 | int cap_sys_admin = 1; | |
864 | int rc; | |
865 | ||
866 | /* | |
867 | * The module will respond with a positive value if | |
868 | * it thinks the __vm_enough_memory() call should be | |
869 | * made with the cap_sys_admin set. If all of the modules | |
870 | * agree that it should be set it will. If any module | |
871 | * thinks it should not be set it won't. | |
872 | */ | |
df0ce173 | 873 | hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { |
b1d9e6b0 CS |
874 | rc = hp->hook.vm_enough_memory(mm, pages); |
875 | if (rc <= 0) { | |
876 | cap_sys_admin = 0; | |
877 | break; | |
878 | } | |
879 | } | |
880 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
20510f2f JM |
881 | } |
882 | ||
b8bff599 | 883 | int security_bprm_creds_for_exec(struct linux_binprm *bprm) |
20510f2f | 884 | { |
b8bff599 EB |
885 | return call_int_hook(bprm_creds_for_exec, 0, bprm); |
886 | } | |
887 | ||
56305aa9 | 888 | int security_bprm_creds_from_file(struct linux_binprm *bprm, struct file *file) |
20510f2f | 889 | { |
56305aa9 | 890 | return call_int_hook(bprm_creds_from_file, 0, bprm, file); |
20510f2f JM |
891 | } |
892 | ||
a6f76f23 | 893 | int security_bprm_check(struct linux_binprm *bprm) |
20510f2f | 894 | { |
6c21a7fb MZ |
895 | int ret; |
896 | ||
f25fce3e | 897 | ret = call_int_hook(bprm_check_security, 0, bprm); |
6c21a7fb MZ |
898 | if (ret) |
899 | return ret; | |
900 | return ima_bprm_check(bprm); | |
20510f2f JM |
901 | } |
902 | ||
a6f76f23 | 903 | void security_bprm_committing_creds(struct linux_binprm *bprm) |
20510f2f | 904 | { |
f25fce3e | 905 | call_void_hook(bprm_committing_creds, bprm); |
20510f2f JM |
906 | } |
907 | ||
a6f76f23 | 908 | void security_bprm_committed_creds(struct linux_binprm *bprm) |
20510f2f | 909 | { |
f25fce3e | 910 | call_void_hook(bprm_committed_creds, bprm); |
20510f2f JM |
911 | } |
912 | ||
0b52075e AV |
913 | int security_fs_context_dup(struct fs_context *fc, struct fs_context *src_fc) |
914 | { | |
915 | return call_int_hook(fs_context_dup, 0, fc, src_fc); | |
916 | } | |
917 | ||
ecff3057 CS |
918 | int security_fs_context_parse_param(struct fs_context *fc, |
919 | struct fs_parameter *param) | |
da2441fd | 920 | { |
ecff3057 CS |
921 | struct security_hook_list *hp; |
922 | int trc; | |
923 | int rc = -ENOPARAM; | |
924 | ||
925 | hlist_for_each_entry(hp, &security_hook_heads.fs_context_parse_param, | |
926 | list) { | |
927 | trc = hp->hook.fs_context_parse_param(fc, param); | |
928 | if (trc == 0) | |
929 | rc = 0; | |
930 | else if (trc != -ENOPARAM) | |
931 | return trc; | |
932 | } | |
933 | return rc; | |
da2441fd DH |
934 | } |
935 | ||
20510f2f JM |
936 | int security_sb_alloc(struct super_block *sb) |
937 | { | |
1aea7808 CS |
938 | int rc = lsm_superblock_alloc(sb); |
939 | ||
940 | if (unlikely(rc)) | |
941 | return rc; | |
942 | rc = call_int_hook(sb_alloc_security, 0, sb); | |
943 | if (unlikely(rc)) | |
944 | security_sb_free(sb); | |
945 | return rc; | |
20510f2f JM |
946 | } |
947 | ||
83e804f0 MS |
948 | void security_sb_delete(struct super_block *sb) |
949 | { | |
950 | call_void_hook(sb_delete, sb); | |
20510f2f JM |
951 | } |
952 | ||
953 | void security_sb_free(struct super_block *sb) | |
954 | { | |
f25fce3e | 955 | call_void_hook(sb_free_security, sb); |
1aea7808 CS |
956 | kfree(sb->s_security); |
957 | sb->s_security = NULL; | |
20510f2f JM |
958 | } |
959 | ||
204cc0cc | 960 | void security_free_mnt_opts(void **mnt_opts) |
20510f2f | 961 | { |
204cc0cc AV |
962 | if (!*mnt_opts) |
963 | return; | |
964 | call_void_hook(sb_free_mnt_opts, *mnt_opts); | |
965 | *mnt_opts = NULL; | |
20510f2f | 966 | } |
204cc0cc | 967 | EXPORT_SYMBOL(security_free_mnt_opts); |
20510f2f | 968 | |
204cc0cc | 969 | int security_sb_eat_lsm_opts(char *options, void **mnt_opts) |
ff36fe2c | 970 | { |
204cc0cc | 971 | return call_int_hook(sb_eat_lsm_opts, 0, options, mnt_opts); |
ff36fe2c | 972 | } |
f5c0c26d | 973 | EXPORT_SYMBOL(security_sb_eat_lsm_opts); |
ff36fe2c | 974 | |
69c4a42d OK |
975 | int security_sb_mnt_opts_compat(struct super_block *sb, |
976 | void *mnt_opts) | |
977 | { | |
978 | return call_int_hook(sb_mnt_opts_compat, 0, sb, mnt_opts); | |
979 | } | |
980 | EXPORT_SYMBOL(security_sb_mnt_opts_compat); | |
981 | ||
c039bc3c | 982 | int security_sb_remount(struct super_block *sb, |
204cc0cc | 983 | void *mnt_opts) |
20510f2f | 984 | { |
204cc0cc | 985 | return call_int_hook(sb_remount, 0, sb, mnt_opts); |
ff36fe2c | 986 | } |
a65001e8 | 987 | EXPORT_SYMBOL(security_sb_remount); |
ff36fe2c | 988 | |
a10d7c22 | 989 | int security_sb_kern_mount(struct super_block *sb) |
20510f2f | 990 | { |
a10d7c22 | 991 | return call_int_hook(sb_kern_mount, 0, sb); |
20510f2f JM |
992 | } |
993 | ||
2069f457 EP |
994 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) |
995 | { | |
f25fce3e | 996 | return call_int_hook(sb_show_options, 0, m, sb); |
2069f457 EP |
997 | } |
998 | ||
20510f2f JM |
999 | int security_sb_statfs(struct dentry *dentry) |
1000 | { | |
f25fce3e | 1001 | return call_int_hook(sb_statfs, 0, dentry); |
20510f2f JM |
1002 | } |
1003 | ||
8a04c43b | 1004 | int security_sb_mount(const char *dev_name, const struct path *path, |
808d4e3c | 1005 | const char *type, unsigned long flags, void *data) |
20510f2f | 1006 | { |
f25fce3e | 1007 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); |
20510f2f JM |
1008 | } |
1009 | ||
20510f2f JM |
1010 | int security_sb_umount(struct vfsmount *mnt, int flags) |
1011 | { | |
f25fce3e | 1012 | return call_int_hook(sb_umount, 0, mnt, flags); |
20510f2f JM |
1013 | } |
1014 | ||
3b73b68c | 1015 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) |
20510f2f | 1016 | { |
f25fce3e | 1017 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); |
20510f2f JM |
1018 | } |
1019 | ||
c9180a57 | 1020 | int security_sb_set_mnt_opts(struct super_block *sb, |
204cc0cc | 1021 | void *mnt_opts, |
649f6e77 DQ |
1022 | unsigned long kern_flags, |
1023 | unsigned long *set_kern_flags) | |
c9180a57 | 1024 | { |
b1d9e6b0 | 1025 | return call_int_hook(sb_set_mnt_opts, |
204cc0cc AV |
1026 | mnt_opts ? -EOPNOTSUPP : 0, sb, |
1027 | mnt_opts, kern_flags, set_kern_flags); | |
c9180a57 | 1028 | } |
e0007529 | 1029 | EXPORT_SYMBOL(security_sb_set_mnt_opts); |
c9180a57 | 1030 | |
094f7b69 | 1031 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, |
0b4d3452 SM |
1032 | struct super_block *newsb, |
1033 | unsigned long kern_flags, | |
1034 | unsigned long *set_kern_flags) | |
c9180a57 | 1035 | { |
0b4d3452 SM |
1036 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, |
1037 | kern_flags, set_kern_flags); | |
c9180a57 | 1038 | } |
e0007529 EP |
1039 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); |
1040 | ||
2db154b3 DH |
1041 | int security_move_mount(const struct path *from_path, const struct path *to_path) |
1042 | { | |
1043 | return call_int_hook(move_mount, 0, from_path, to_path); | |
1044 | } | |
1045 | ||
ac5656d8 AG |
1046 | int security_path_notify(const struct path *path, u64 mask, |
1047 | unsigned int obj_type) | |
1048 | { | |
1049 | return call_int_hook(path_notify, 0, path, mask, obj_type); | |
1050 | } | |
1051 | ||
20510f2f JM |
1052 | int security_inode_alloc(struct inode *inode) |
1053 | { | |
afb1cbe3 CS |
1054 | int rc = lsm_inode_alloc(inode); |
1055 | ||
1056 | if (unlikely(rc)) | |
1057 | return rc; | |
1058 | rc = call_int_hook(inode_alloc_security, 0, inode); | |
1059 | if (unlikely(rc)) | |
1060 | security_inode_free(inode); | |
1061 | return rc; | |
1062 | } | |
1063 | ||
1064 | static void inode_free_by_rcu(struct rcu_head *head) | |
1065 | { | |
1066 | /* | |
1067 | * The rcu head is at the start of the inode blob | |
1068 | */ | |
1069 | kmem_cache_free(lsm_inode_cache, head); | |
20510f2f JM |
1070 | } |
1071 | ||
1072 | void security_inode_free(struct inode *inode) | |
1073 | { | |
f381c272 | 1074 | integrity_inode_free(inode); |
f25fce3e | 1075 | call_void_hook(inode_free_security, inode); |
afb1cbe3 CS |
1076 | /* |
1077 | * The inode may still be referenced in a path walk and | |
1078 | * a call to security_inode_permission() can be made | |
1079 | * after inode_free_security() is called. Ideally, the VFS | |
1080 | * wouldn't do this, but fixing that is a much harder | |
1081 | * job. For now, simply free the i_security via RCU, and | |
1082 | * leave the current inode->i_security pointer intact. | |
1083 | * The inode will be freed after the RCU grace period too. | |
1084 | */ | |
1085 | if (inode->i_security) | |
1086 | call_rcu((struct rcu_head *)inode->i_security, | |
1087 | inode_free_by_rcu); | |
20510f2f JM |
1088 | } |
1089 | ||
d47be3df | 1090 | int security_dentry_init_security(struct dentry *dentry, int mode, |
15bf3239 VG |
1091 | const struct qstr *name, |
1092 | const char **xattr_name, void **ctx, | |
1093 | u32 *ctxlen) | |
d47be3df | 1094 | { |
7f5056b9 VG |
1095 | struct security_hook_list *hp; |
1096 | int rc; | |
1097 | ||
1098 | /* | |
1099 | * Only one module will provide a security context. | |
1100 | */ | |
1101 | hlist_for_each_entry(hp, &security_hook_heads.dentry_init_security, list) { | |
1102 | rc = hp->hook.dentry_init_security(dentry, mode, name, | |
1103 | xattr_name, ctx, ctxlen); | |
1104 | if (rc != LSM_RET_DEFAULT(dentry_init_security)) | |
1105 | return rc; | |
1106 | } | |
1107 | return LSM_RET_DEFAULT(dentry_init_security); | |
d47be3df DQ |
1108 | } |
1109 | EXPORT_SYMBOL(security_dentry_init_security); | |
1110 | ||
2602625b VG |
1111 | int security_dentry_create_files_as(struct dentry *dentry, int mode, |
1112 | struct qstr *name, | |
1113 | const struct cred *old, struct cred *new) | |
1114 | { | |
1115 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
1116 | name, old, new); | |
1117 | } | |
1118 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
1119 | ||
20510f2f | 1120 | int security_inode_init_security(struct inode *inode, struct inode *dir, |
9d8f13ba MZ |
1121 | const struct qstr *qstr, |
1122 | const initxattrs initxattrs, void *fs_data) | |
20510f2f | 1123 | { |
823eb1cc MZ |
1124 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; |
1125 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
9d8f13ba MZ |
1126 | int ret; |
1127 | ||
20510f2f | 1128 | if (unlikely(IS_PRIVATE(inode))) |
fb88c2b6 | 1129 | return 0; |
9d8f13ba | 1130 | |
9d8f13ba | 1131 | if (!initxattrs) |
e308fd3b JB |
1132 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, |
1133 | dir, qstr, NULL, NULL, NULL); | |
9548906b | 1134 | memset(new_xattrs, 0, sizeof(new_xattrs)); |
9d8f13ba | 1135 | lsm_xattr = new_xattrs; |
b1d9e6b0 | 1136 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, |
9d8f13ba MZ |
1137 | &lsm_xattr->name, |
1138 | &lsm_xattr->value, | |
1139 | &lsm_xattr->value_len); | |
1140 | if (ret) | |
1141 | goto out; | |
823eb1cc MZ |
1142 | |
1143 | evm_xattr = lsm_xattr + 1; | |
1144 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
1145 | if (ret) | |
1146 | goto out; | |
9d8f13ba MZ |
1147 | ret = initxattrs(inode, new_xattrs, fs_data); |
1148 | out: | |
9548906b | 1149 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) |
823eb1cc | 1150 | kfree(xattr->value); |
9d8f13ba MZ |
1151 | return (ret == -EOPNOTSUPP) ? 0 : ret; |
1152 | } | |
1153 | EXPORT_SYMBOL(security_inode_init_security); | |
1154 | ||
215b674b LG |
1155 | int security_inode_init_security_anon(struct inode *inode, |
1156 | const struct qstr *name, | |
1157 | const struct inode *context_inode) | |
1158 | { | |
1159 | return call_int_hook(inode_init_security_anon, 0, inode, name, | |
1160 | context_inode); | |
1161 | } | |
1162 | ||
9d8f13ba | 1163 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, |
9548906b | 1164 | const struct qstr *qstr, const char **name, |
9d8f13ba | 1165 | void **value, size_t *len) |
20510f2f JM |
1166 | { |
1167 | if (unlikely(IS_PRIVATE(inode))) | |
30e05324 | 1168 | return -EOPNOTSUPP; |
e308fd3b JB |
1169 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, |
1170 | qstr, name, value, len); | |
20510f2f | 1171 | } |
9d8f13ba | 1172 | EXPORT_SYMBOL(security_old_inode_init_security); |
20510f2f | 1173 | |
be6d3e56 | 1174 | #ifdef CONFIG_SECURITY_PATH |
d3607752 | 1175 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, |
be6d3e56 KT |
1176 | unsigned int dev) |
1177 | { | |
c6f493d6 | 1178 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1179 | return 0; |
f25fce3e | 1180 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); |
be6d3e56 KT |
1181 | } |
1182 | EXPORT_SYMBOL(security_path_mknod); | |
1183 | ||
d3607752 | 1184 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) |
be6d3e56 | 1185 | { |
c6f493d6 | 1186 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1187 | return 0; |
f25fce3e | 1188 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); |
be6d3e56 | 1189 | } |
82140443 | 1190 | EXPORT_SYMBOL(security_path_mkdir); |
be6d3e56 | 1191 | |
989f74e0 | 1192 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1193 | { |
c6f493d6 | 1194 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1195 | return 0; |
f25fce3e | 1196 | return call_int_hook(path_rmdir, 0, dir, dentry); |
be6d3e56 KT |
1197 | } |
1198 | ||
989f74e0 | 1199 | int security_path_unlink(const struct path *dir, struct dentry *dentry) |
be6d3e56 | 1200 | { |
c6f493d6 | 1201 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1202 | return 0; |
f25fce3e | 1203 | return call_int_hook(path_unlink, 0, dir, dentry); |
be6d3e56 | 1204 | } |
82140443 | 1205 | EXPORT_SYMBOL(security_path_unlink); |
be6d3e56 | 1206 | |
d3607752 | 1207 | int security_path_symlink(const struct path *dir, struct dentry *dentry, |
be6d3e56 KT |
1208 | const char *old_name) |
1209 | { | |
c6f493d6 | 1210 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) |
be6d3e56 | 1211 | return 0; |
f25fce3e | 1212 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); |
be6d3e56 KT |
1213 | } |
1214 | ||
3ccee46a | 1215 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, |
be6d3e56 KT |
1216 | struct dentry *new_dentry) |
1217 | { | |
c6f493d6 | 1218 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
be6d3e56 | 1219 | return 0; |
f25fce3e | 1220 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); |
be6d3e56 KT |
1221 | } |
1222 | ||
3ccee46a AV |
1223 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, |
1224 | const struct path *new_dir, struct dentry *new_dentry, | |
0b3974eb | 1225 | unsigned int flags) |
be6d3e56 | 1226 | { |
c6f493d6 DH |
1227 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1228 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
be6d3e56 | 1229 | return 0; |
da1ce067 | 1230 | |
f25fce3e | 1231 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, |
100f59d9 | 1232 | new_dentry, flags); |
be6d3e56 | 1233 | } |
82140443 | 1234 | EXPORT_SYMBOL(security_path_rename); |
be6d3e56 | 1235 | |
81f4c506 | 1236 | int security_path_truncate(const struct path *path) |
be6d3e56 | 1237 | { |
c6f493d6 | 1238 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
be6d3e56 | 1239 | return 0; |
f25fce3e | 1240 | return call_int_hook(path_truncate, 0, path); |
be6d3e56 | 1241 | } |
89eda068 | 1242 | |
be01f9f2 | 1243 | int security_path_chmod(const struct path *path, umode_t mode) |
89eda068 | 1244 | { |
c6f493d6 | 1245 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1246 | return 0; |
f25fce3e | 1247 | return call_int_hook(path_chmod, 0, path, mode); |
89eda068 TH |
1248 | } |
1249 | ||
7fd25dac | 1250 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) |
89eda068 | 1251 | { |
c6f493d6 | 1252 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
89eda068 | 1253 | return 0; |
f25fce3e | 1254 | return call_int_hook(path_chown, 0, path, uid, gid); |
89eda068 | 1255 | } |
8b8efb44 | 1256 | |
77b286c0 | 1257 | int security_path_chroot(const struct path *path) |
8b8efb44 | 1258 | { |
f25fce3e | 1259 | return call_int_hook(path_chroot, 0, path); |
8b8efb44 | 1260 | } |
be6d3e56 KT |
1261 | #endif |
1262 | ||
4acdaf27 | 1263 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1264 | { |
1265 | if (unlikely(IS_PRIVATE(dir))) | |
1266 | return 0; | |
f25fce3e | 1267 | return call_int_hook(inode_create, 0, dir, dentry, mode); |
20510f2f | 1268 | } |
800a9647 | 1269 | EXPORT_SYMBOL_GPL(security_inode_create); |
20510f2f JM |
1270 | |
1271 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
1272 | struct dentry *new_dentry) | |
1273 | { | |
c6f493d6 | 1274 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) |
20510f2f | 1275 | return 0; |
f25fce3e | 1276 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); |
20510f2f JM |
1277 | } |
1278 | ||
1279 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
1280 | { | |
c6f493d6 | 1281 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1282 | return 0; |
f25fce3e | 1283 | return call_int_hook(inode_unlink, 0, dir, dentry); |
20510f2f JM |
1284 | } |
1285 | ||
1286 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
1287 | const char *old_name) | |
1288 | { | |
1289 | if (unlikely(IS_PRIVATE(dir))) | |
1290 | return 0; | |
f25fce3e | 1291 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); |
20510f2f JM |
1292 | } |
1293 | ||
18bb1db3 | 1294 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) |
20510f2f JM |
1295 | { |
1296 | if (unlikely(IS_PRIVATE(dir))) | |
1297 | return 0; | |
f25fce3e | 1298 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); |
20510f2f | 1299 | } |
800a9647 | 1300 | EXPORT_SYMBOL_GPL(security_inode_mkdir); |
20510f2f JM |
1301 | |
1302 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
1303 | { | |
c6f493d6 | 1304 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1305 | return 0; |
f25fce3e | 1306 | return call_int_hook(inode_rmdir, 0, dir, dentry); |
20510f2f JM |
1307 | } |
1308 | ||
1a67aafb | 1309 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) |
20510f2f JM |
1310 | { |
1311 | if (unlikely(IS_PRIVATE(dir))) | |
1312 | return 0; | |
f25fce3e | 1313 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); |
20510f2f JM |
1314 | } |
1315 | ||
1316 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
0b3974eb MS |
1317 | struct inode *new_dir, struct dentry *new_dentry, |
1318 | unsigned int flags) | |
20510f2f | 1319 | { |
c6f493d6 DH |
1320 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || |
1321 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
20510f2f | 1322 | return 0; |
da1ce067 MS |
1323 | |
1324 | if (flags & RENAME_EXCHANGE) { | |
f25fce3e | 1325 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, |
da1ce067 MS |
1326 | old_dir, old_dentry); |
1327 | if (err) | |
1328 | return err; | |
1329 | } | |
1330 | ||
f25fce3e | 1331 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, |
20510f2f JM |
1332 | new_dir, new_dentry); |
1333 | } | |
1334 | ||
1335 | int security_inode_readlink(struct dentry *dentry) | |
1336 | { | |
c6f493d6 | 1337 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1338 | return 0; |
f25fce3e | 1339 | return call_int_hook(inode_readlink, 0, dentry); |
20510f2f JM |
1340 | } |
1341 | ||
bda0be7a N |
1342 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, |
1343 | bool rcu) | |
20510f2f | 1344 | { |
bda0be7a | 1345 | if (unlikely(IS_PRIVATE(inode))) |
20510f2f | 1346 | return 0; |
e22619a2 | 1347 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); |
20510f2f JM |
1348 | } |
1349 | ||
b77b0646 | 1350 | int security_inode_permission(struct inode *inode, int mask) |
20510f2f JM |
1351 | { |
1352 | if (unlikely(IS_PRIVATE(inode))) | |
1353 | return 0; | |
f25fce3e | 1354 | return call_int_hook(inode_permission, 0, inode, mask); |
20510f2f JM |
1355 | } |
1356 | ||
0e363cf3 CB |
1357 | int security_inode_setattr(struct user_namespace *mnt_userns, |
1358 | struct dentry *dentry, struct iattr *attr) | |
20510f2f | 1359 | { |
817b54aa MZ |
1360 | int ret; |
1361 | ||
c6f493d6 | 1362 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1363 | return 0; |
f25fce3e | 1364 | ret = call_int_hook(inode_setattr, 0, dentry, attr); |
817b54aa MZ |
1365 | if (ret) |
1366 | return ret; | |
0e363cf3 | 1367 | return evm_inode_setattr(mnt_userns, dentry, attr); |
20510f2f | 1368 | } |
b1da47e2 | 1369 | EXPORT_SYMBOL_GPL(security_inode_setattr); |
20510f2f | 1370 | |
3f7036a0 | 1371 | int security_inode_getattr(const struct path *path) |
20510f2f | 1372 | { |
c6f493d6 | 1373 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) |
20510f2f | 1374 | return 0; |
f25fce3e | 1375 | return call_int_hook(inode_getattr, 0, path); |
20510f2f JM |
1376 | } |
1377 | ||
71bc356f CB |
1378 | int security_inode_setxattr(struct user_namespace *mnt_userns, |
1379 | struct dentry *dentry, const char *name, | |
8f0cfa52 | 1380 | const void *value, size_t size, int flags) |
20510f2f | 1381 | { |
3e1be52d MZ |
1382 | int ret; |
1383 | ||
c6f493d6 | 1384 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1385 | return 0; |
b1d9e6b0 CS |
1386 | /* |
1387 | * SELinux and Smack integrate the cap call, | |
1388 | * so assume that all LSMs supplying this call do so. | |
1389 | */ | |
71bc356f CB |
1390 | ret = call_int_hook(inode_setxattr, 1, mnt_userns, dentry, name, value, |
1391 | size, flags); | |
b1d9e6b0 CS |
1392 | |
1393 | if (ret == 1) | |
1394 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
42c63330 MZ |
1395 | if (ret) |
1396 | return ret; | |
1397 | ret = ima_inode_setxattr(dentry, name, value, size); | |
3e1be52d MZ |
1398 | if (ret) |
1399 | return ret; | |
7e135dc7 | 1400 | return evm_inode_setxattr(mnt_userns, dentry, name, value, size); |
20510f2f JM |
1401 | } |
1402 | ||
72b3897e CB |
1403 | int security_inode_set_acl(struct user_namespace *mnt_userns, |
1404 | struct dentry *dentry, const char *acl_name, | |
1405 | struct posix_acl *kacl) | |
1406 | { | |
e61b135f CB |
1407 | int ret; |
1408 | ||
72b3897e CB |
1409 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
1410 | return 0; | |
e61b135f CB |
1411 | ret = call_int_hook(inode_set_acl, 0, mnt_userns, dentry, acl_name, |
1412 | kacl); | |
1413 | if (ret) | |
1414 | return ret; | |
1415 | ret = ima_inode_set_acl(mnt_userns, dentry, acl_name, kacl); | |
1416 | if (ret) | |
1417 | return ret; | |
1418 | return evm_inode_set_acl(mnt_userns, dentry, acl_name, kacl); | |
72b3897e CB |
1419 | } |
1420 | ||
1421 | int security_inode_get_acl(struct user_namespace *mnt_userns, | |
1422 | struct dentry *dentry, const char *acl_name) | |
1423 | { | |
1424 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) | |
1425 | return 0; | |
1426 | return call_int_hook(inode_get_acl, 0, mnt_userns, dentry, acl_name); | |
1427 | } | |
1428 | ||
1429 | int security_inode_remove_acl(struct user_namespace *mnt_userns, | |
1430 | struct dentry *dentry, const char *acl_name) | |
1431 | { | |
e61b135f CB |
1432 | int ret; |
1433 | ||
72b3897e CB |
1434 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
1435 | return 0; | |
e61b135f CB |
1436 | ret = call_int_hook(inode_remove_acl, 0, mnt_userns, dentry, acl_name); |
1437 | if (ret) | |
1438 | return ret; | |
1439 | ret = ima_inode_remove_acl(mnt_userns, dentry, acl_name); | |
1440 | if (ret) | |
1441 | return ret; | |
1442 | return evm_inode_remove_acl(mnt_userns, dentry, acl_name); | |
72b3897e CB |
1443 | } |
1444 | ||
8f0cfa52 DH |
1445 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, |
1446 | const void *value, size_t size, int flags) | |
20510f2f | 1447 | { |
c6f493d6 | 1448 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1449 | return; |
f25fce3e | 1450 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); |
3e1be52d | 1451 | evm_inode_post_setxattr(dentry, name, value, size); |
20510f2f JM |
1452 | } |
1453 | ||
8f0cfa52 | 1454 | int security_inode_getxattr(struct dentry *dentry, const char *name) |
20510f2f | 1455 | { |
c6f493d6 | 1456 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1457 | return 0; |
f25fce3e | 1458 | return call_int_hook(inode_getxattr, 0, dentry, name); |
20510f2f JM |
1459 | } |
1460 | ||
1461 | int security_inode_listxattr(struct dentry *dentry) | |
1462 | { | |
c6f493d6 | 1463 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1464 | return 0; |
f25fce3e | 1465 | return call_int_hook(inode_listxattr, 0, dentry); |
20510f2f JM |
1466 | } |
1467 | ||
71bc356f CB |
1468 | int security_inode_removexattr(struct user_namespace *mnt_userns, |
1469 | struct dentry *dentry, const char *name) | |
20510f2f | 1470 | { |
3e1be52d MZ |
1471 | int ret; |
1472 | ||
c6f493d6 | 1473 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) |
20510f2f | 1474 | return 0; |
b1d9e6b0 CS |
1475 | /* |
1476 | * SELinux and Smack integrate the cap call, | |
1477 | * so assume that all LSMs supplying this call do so. | |
1478 | */ | |
71bc356f | 1479 | ret = call_int_hook(inode_removexattr, 1, mnt_userns, dentry, name); |
b1d9e6b0 | 1480 | if (ret == 1) |
71bc356f | 1481 | ret = cap_inode_removexattr(mnt_userns, dentry, name); |
42c63330 MZ |
1482 | if (ret) |
1483 | return ret; | |
1484 | ret = ima_inode_removexattr(dentry, name); | |
3e1be52d MZ |
1485 | if (ret) |
1486 | return ret; | |
7e135dc7 | 1487 | return evm_inode_removexattr(mnt_userns, dentry, name); |
20510f2f JM |
1488 | } |
1489 | ||
b5376771 SH |
1490 | int security_inode_need_killpriv(struct dentry *dentry) |
1491 | { | |
f25fce3e | 1492 | return call_int_hook(inode_need_killpriv, 0, dentry); |
b5376771 SH |
1493 | } |
1494 | ||
71bc356f CB |
1495 | int security_inode_killpriv(struct user_namespace *mnt_userns, |
1496 | struct dentry *dentry) | |
b5376771 | 1497 | { |
71bc356f | 1498 | return call_int_hook(inode_killpriv, 0, mnt_userns, dentry); |
b5376771 SH |
1499 | } |
1500 | ||
71bc356f CB |
1501 | int security_inode_getsecurity(struct user_namespace *mnt_userns, |
1502 | struct inode *inode, const char *name, | |
1503 | void **buffer, bool alloc) | |
20510f2f | 1504 | { |
2885c1e3 CS |
1505 | struct security_hook_list *hp; |
1506 | int rc; | |
1507 | ||
20510f2f | 1508 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1509 | return LSM_RET_DEFAULT(inode_getsecurity); |
2885c1e3 CS |
1510 | /* |
1511 | * Only one module will provide an attribute with a given name. | |
1512 | */ | |
df0ce173 | 1513 | hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { |
71bc356f | 1514 | rc = hp->hook.inode_getsecurity(mnt_userns, inode, name, buffer, alloc); |
98e828a0 | 1515 | if (rc != LSM_RET_DEFAULT(inode_getsecurity)) |
2885c1e3 CS |
1516 | return rc; |
1517 | } | |
98e828a0 | 1518 | return LSM_RET_DEFAULT(inode_getsecurity); |
20510f2f JM |
1519 | } |
1520 | ||
1521 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
1522 | { | |
2885c1e3 CS |
1523 | struct security_hook_list *hp; |
1524 | int rc; | |
1525 | ||
20510f2f | 1526 | if (unlikely(IS_PRIVATE(inode))) |
98e828a0 | 1527 | return LSM_RET_DEFAULT(inode_setsecurity); |
2885c1e3 CS |
1528 | /* |
1529 | * Only one module will provide an attribute with a given name. | |
1530 | */ | |
df0ce173 | 1531 | hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { |
2885c1e3 CS |
1532 | rc = hp->hook.inode_setsecurity(inode, name, value, size, |
1533 | flags); | |
98e828a0 | 1534 | if (rc != LSM_RET_DEFAULT(inode_setsecurity)) |
2885c1e3 CS |
1535 | return rc; |
1536 | } | |
98e828a0 | 1537 | return LSM_RET_DEFAULT(inode_setsecurity); |
20510f2f JM |
1538 | } |
1539 | ||
1540 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
1541 | { | |
1542 | if (unlikely(IS_PRIVATE(inode))) | |
1543 | return 0; | |
f25fce3e | 1544 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); |
20510f2f | 1545 | } |
c9bccef6 | 1546 | EXPORT_SYMBOL(security_inode_listsecurity); |
20510f2f | 1547 | |
d6335d77 | 1548 | void security_inode_getsecid(struct inode *inode, u32 *secid) |
8a076191 | 1549 | { |
f25fce3e | 1550 | call_void_hook(inode_getsecid, inode, secid); |
8a076191 AD |
1551 | } |
1552 | ||
d8ad8b49 VG |
1553 | int security_inode_copy_up(struct dentry *src, struct cred **new) |
1554 | { | |
1555 | return call_int_hook(inode_copy_up, 0, src, new); | |
1556 | } | |
1557 | EXPORT_SYMBOL(security_inode_copy_up); | |
1558 | ||
121ab822 VG |
1559 | int security_inode_copy_up_xattr(const char *name) |
1560 | { | |
23e390cd KS |
1561 | struct security_hook_list *hp; |
1562 | int rc; | |
1563 | ||
1564 | /* | |
1565 | * The implementation can return 0 (accept the xattr), 1 (discard the | |
1566 | * xattr), -EOPNOTSUPP if it does not know anything about the xattr or | |
1567 | * any other error code incase of an error. | |
1568 | */ | |
1569 | hlist_for_each_entry(hp, | |
1570 | &security_hook_heads.inode_copy_up_xattr, list) { | |
1571 | rc = hp->hook.inode_copy_up_xattr(name); | |
1572 | if (rc != LSM_RET_DEFAULT(inode_copy_up_xattr)) | |
1573 | return rc; | |
1574 | } | |
1575 | ||
1576 | return LSM_RET_DEFAULT(inode_copy_up_xattr); | |
121ab822 VG |
1577 | } |
1578 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
1579 | ||
b230d5ab OM |
1580 | int security_kernfs_init_security(struct kernfs_node *kn_dir, |
1581 | struct kernfs_node *kn) | |
1582 | { | |
1583 | return call_int_hook(kernfs_init_security, 0, kn_dir, kn); | |
1584 | } | |
1585 | ||
20510f2f JM |
1586 | int security_file_permission(struct file *file, int mask) |
1587 | { | |
c4ec54b4 EP |
1588 | int ret; |
1589 | ||
f25fce3e | 1590 | ret = call_int_hook(file_permission, 0, file, mask); |
c4ec54b4 EP |
1591 | if (ret) |
1592 | return ret; | |
1593 | ||
1594 | return fsnotify_perm(file, mask); | |
20510f2f JM |
1595 | } |
1596 | ||
1597 | int security_file_alloc(struct file *file) | |
1598 | { | |
33bf60ca CS |
1599 | int rc = lsm_file_alloc(file); |
1600 | ||
1601 | if (rc) | |
1602 | return rc; | |
1603 | rc = call_int_hook(file_alloc_security, 0, file); | |
1604 | if (unlikely(rc)) | |
1605 | security_file_free(file); | |
1606 | return rc; | |
20510f2f JM |
1607 | } |
1608 | ||
1609 | void security_file_free(struct file *file) | |
1610 | { | |
33bf60ca CS |
1611 | void *blob; |
1612 | ||
f25fce3e | 1613 | call_void_hook(file_free_security, file); |
33bf60ca CS |
1614 | |
1615 | blob = file->f_security; | |
1616 | if (blob) { | |
1617 | file->f_security = NULL; | |
1618 | kmem_cache_free(lsm_file_cache, blob); | |
1619 | } | |
20510f2f JM |
1620 | } |
1621 | ||
1622 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
1623 | { | |
f25fce3e | 1624 | return call_int_hook(file_ioctl, 0, file, cmd, arg); |
20510f2f | 1625 | } |
292f902a | 1626 | EXPORT_SYMBOL_GPL(security_file_ioctl); |
20510f2f | 1627 | |
98de59bf | 1628 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) |
20510f2f | 1629 | { |
8b3ec681 | 1630 | /* |
98de59bf AV |
1631 | * Does we have PROT_READ and does the application expect |
1632 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
8b3ec681 | 1633 | */ |
98de59bf AV |
1634 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) |
1635 | return prot; | |
8b3ec681 | 1636 | if (!(current->personality & READ_IMPLIES_EXEC)) |
98de59bf AV |
1637 | return prot; |
1638 | /* | |
1639 | * if that's an anonymous mapping, let it. | |
1640 | */ | |
1641 | if (!file) | |
1642 | return prot | PROT_EXEC; | |
1643 | /* | |
1644 | * ditto if it's not on noexec mount, except that on !MMU we need | |
b4caecd4 | 1645 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case |
98de59bf | 1646 | */ |
90f8572b | 1647 | if (!path_noexec(&file->f_path)) { |
8b3ec681 | 1648 | #ifndef CONFIG_MMU |
b4caecd4 CH |
1649 | if (file->f_op->mmap_capabilities) { |
1650 | unsigned caps = file->f_op->mmap_capabilities(file); | |
1651 | if (!(caps & NOMMU_MAP_EXEC)) | |
1652 | return prot; | |
1653 | } | |
8b3ec681 | 1654 | #endif |
98de59bf | 1655 | return prot | PROT_EXEC; |
8b3ec681 | 1656 | } |
98de59bf AV |
1657 | /* anything on noexec mount won't get PROT_EXEC */ |
1658 | return prot; | |
1659 | } | |
1660 | ||
1661 | int security_mmap_file(struct file *file, unsigned long prot, | |
1662 | unsigned long flags) | |
1663 | { | |
1664 | int ret; | |
f25fce3e | 1665 | ret = call_int_hook(mmap_file, 0, file, prot, |
98de59bf | 1666 | mmap_prot(file, prot), flags); |
6c21a7fb MZ |
1667 | if (ret) |
1668 | return ret; | |
1669 | return ima_file_mmap(file, prot); | |
20510f2f JM |
1670 | } |
1671 | ||
e5467859 AV |
1672 | int security_mmap_addr(unsigned long addr) |
1673 | { | |
f25fce3e | 1674 | return call_int_hook(mmap_addr, 0, addr); |
e5467859 AV |
1675 | } |
1676 | ||
20510f2f JM |
1677 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, |
1678 | unsigned long prot) | |
1679 | { | |
8eb613c0 MZ |
1680 | int ret; |
1681 | ||
1682 | ret = call_int_hook(file_mprotect, 0, vma, reqprot, prot); | |
1683 | if (ret) | |
1684 | return ret; | |
1685 | return ima_file_mprotect(vma, prot); | |
20510f2f JM |
1686 | } |
1687 | ||
1688 | int security_file_lock(struct file *file, unsigned int cmd) | |
1689 | { | |
f25fce3e | 1690 | return call_int_hook(file_lock, 0, file, cmd); |
20510f2f JM |
1691 | } |
1692 | ||
1693 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
1694 | { | |
f25fce3e | 1695 | return call_int_hook(file_fcntl, 0, file, cmd, arg); |
20510f2f JM |
1696 | } |
1697 | ||
e0b93edd | 1698 | void security_file_set_fowner(struct file *file) |
20510f2f | 1699 | { |
f25fce3e | 1700 | call_void_hook(file_set_fowner, file); |
20510f2f JM |
1701 | } |
1702 | ||
1703 | int security_file_send_sigiotask(struct task_struct *tsk, | |
1704 | struct fown_struct *fown, int sig) | |
1705 | { | |
f25fce3e | 1706 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); |
20510f2f JM |
1707 | } |
1708 | ||
1709 | int security_file_receive(struct file *file) | |
1710 | { | |
f25fce3e | 1711 | return call_int_hook(file_receive, 0, file); |
20510f2f JM |
1712 | } |
1713 | ||
e3f20ae2 | 1714 | int security_file_open(struct file *file) |
20510f2f | 1715 | { |
c4ec54b4 EP |
1716 | int ret; |
1717 | ||
94817692 | 1718 | ret = call_int_hook(file_open, 0, file); |
c4ec54b4 EP |
1719 | if (ret) |
1720 | return ret; | |
1721 | ||
1722 | return fsnotify_perm(file, MAY_OPEN); | |
20510f2f JM |
1723 | } |
1724 | ||
3350607d GN |
1725 | int security_file_truncate(struct file *file) |
1726 | { | |
1727 | return call_int_hook(file_truncate, 0, file); | |
1728 | } | |
1729 | ||
e4e55b47 TH |
1730 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) |
1731 | { | |
f4ad8f2c CS |
1732 | int rc = lsm_task_alloc(task); |
1733 | ||
1734 | if (rc) | |
1735 | return rc; | |
1736 | rc = call_int_hook(task_alloc, 0, task, clone_flags); | |
1737 | if (unlikely(rc)) | |
1738 | security_task_free(task); | |
1739 | return rc; | |
e4e55b47 TH |
1740 | } |
1741 | ||
1a2a4d06 KC |
1742 | void security_task_free(struct task_struct *task) |
1743 | { | |
f25fce3e | 1744 | call_void_hook(task_free, task); |
f4ad8f2c CS |
1745 | |
1746 | kfree(task->security); | |
1747 | task->security = NULL; | |
1a2a4d06 KC |
1748 | } |
1749 | ||
ee18d64c DH |
1750 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) |
1751 | { | |
bbd3662a CS |
1752 | int rc = lsm_cred_alloc(cred, gfp); |
1753 | ||
1754 | if (rc) | |
1755 | return rc; | |
1756 | ||
1757 | rc = call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
33bf60ca | 1758 | if (unlikely(rc)) |
bbd3662a CS |
1759 | security_cred_free(cred); |
1760 | return rc; | |
ee18d64c DH |
1761 | } |
1762 | ||
d84f4f99 | 1763 | void security_cred_free(struct cred *cred) |
20510f2f | 1764 | { |
a5795fd3 JM |
1765 | /* |
1766 | * There is a failure case in prepare_creds() that | |
1767 | * may result in a call here with ->security being NULL. | |
1768 | */ | |
1769 | if (unlikely(cred->security == NULL)) | |
1770 | return; | |
1771 | ||
f25fce3e | 1772 | call_void_hook(cred_free, cred); |
bbd3662a CS |
1773 | |
1774 | kfree(cred->security); | |
1775 | cred->security = NULL; | |
20510f2f JM |
1776 | } |
1777 | ||
d84f4f99 | 1778 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) |
20510f2f | 1779 | { |
bbd3662a CS |
1780 | int rc = lsm_cred_alloc(new, gfp); |
1781 | ||
1782 | if (rc) | |
1783 | return rc; | |
1784 | ||
1785 | rc = call_int_hook(cred_prepare, 0, new, old, gfp); | |
33bf60ca | 1786 | if (unlikely(rc)) |
bbd3662a CS |
1787 | security_cred_free(new); |
1788 | return rc; | |
d84f4f99 DH |
1789 | } |
1790 | ||
ee18d64c DH |
1791 | void security_transfer_creds(struct cred *new, const struct cred *old) |
1792 | { | |
f25fce3e | 1793 | call_void_hook(cred_transfer, new, old); |
ee18d64c DH |
1794 | } |
1795 | ||
3ec30113 MG |
1796 | void security_cred_getsecid(const struct cred *c, u32 *secid) |
1797 | { | |
1798 | *secid = 0; | |
1799 | call_void_hook(cred_getsecid, c, secid); | |
1800 | } | |
1801 | EXPORT_SYMBOL(security_cred_getsecid); | |
1802 | ||
3a3b7ce9 DH |
1803 | int security_kernel_act_as(struct cred *new, u32 secid) |
1804 | { | |
f25fce3e | 1805 | return call_int_hook(kernel_act_as, 0, new, secid); |
3a3b7ce9 DH |
1806 | } |
1807 | ||
1808 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1809 | { | |
f25fce3e | 1810 | return call_int_hook(kernel_create_files_as, 0, new, inode); |
3a3b7ce9 DH |
1811 | } |
1812 | ||
dd8dbf2e | 1813 | int security_kernel_module_request(char *kmod_name) |
9188499c | 1814 | { |
6eb864c1 MK |
1815 | int ret; |
1816 | ||
1817 | ret = call_int_hook(kernel_module_request, 0, kmod_name); | |
1818 | if (ret) | |
1819 | return ret; | |
1820 | return integrity_kernel_module_request(kmod_name); | |
9188499c EP |
1821 | } |
1822 | ||
2039bda1 KC |
1823 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id, |
1824 | bool contents) | |
39eeb4fb MZ |
1825 | { |
1826 | int ret; | |
1827 | ||
2039bda1 | 1828 | ret = call_int_hook(kernel_read_file, 0, file, id, contents); |
39eeb4fb MZ |
1829 | if (ret) |
1830 | return ret; | |
2039bda1 | 1831 | return ima_read_file(file, id, contents); |
39eeb4fb MZ |
1832 | } |
1833 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1834 | ||
bc8ca5b9 MZ |
1835 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, |
1836 | enum kernel_read_file_id id) | |
b44a7dfc | 1837 | { |
cf222217 MZ |
1838 | int ret; |
1839 | ||
1840 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1841 | if (ret) | |
1842 | return ret; | |
1843 | return ima_post_read_file(file, buf, size, id); | |
b44a7dfc MZ |
1844 | } |
1845 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1846 | ||
b64fcae7 | 1847 | int security_kernel_load_data(enum kernel_load_data_id id, bool contents) |
377179cd | 1848 | { |
16c267aa MZ |
1849 | int ret; |
1850 | ||
b64fcae7 | 1851 | ret = call_int_hook(kernel_load_data, 0, id, contents); |
16c267aa MZ |
1852 | if (ret) |
1853 | return ret; | |
b64fcae7 | 1854 | return ima_load_data(id, contents); |
377179cd | 1855 | } |
83a68a06 | 1856 | EXPORT_SYMBOL_GPL(security_kernel_load_data); |
377179cd | 1857 | |
b64fcae7 KC |
1858 | int security_kernel_post_load_data(char *buf, loff_t size, |
1859 | enum kernel_load_data_id id, | |
1860 | char *description) | |
1861 | { | |
1862 | int ret; | |
1863 | ||
1864 | ret = call_int_hook(kernel_post_load_data, 0, buf, size, id, | |
1865 | description); | |
1866 | if (ret) | |
1867 | return ret; | |
1868 | return ima_post_load_data(buf, size, id, description); | |
1869 | } | |
1870 | EXPORT_SYMBOL_GPL(security_kernel_post_load_data); | |
1871 | ||
d84f4f99 DH |
1872 | int security_task_fix_setuid(struct cred *new, const struct cred *old, |
1873 | int flags) | |
20510f2f | 1874 | { |
f25fce3e | 1875 | return call_int_hook(task_fix_setuid, 0, new, old, flags); |
20510f2f JM |
1876 | } |
1877 | ||
39030e13 TC |
1878 | int security_task_fix_setgid(struct cred *new, const struct cred *old, |
1879 | int flags) | |
1880 | { | |
1881 | return call_int_hook(task_fix_setgid, 0, new, old, flags); | |
1882 | } | |
1883 | ||
fcfe0ac2 MM |
1884 | int security_task_fix_setgroups(struct cred *new, const struct cred *old) |
1885 | { | |
1886 | return call_int_hook(task_fix_setgroups, 0, new, old); | |
1887 | } | |
1888 | ||
20510f2f JM |
1889 | int security_task_setpgid(struct task_struct *p, pid_t pgid) |
1890 | { | |
f25fce3e | 1891 | return call_int_hook(task_setpgid, 0, p, pgid); |
20510f2f JM |
1892 | } |
1893 | ||
1894 | int security_task_getpgid(struct task_struct *p) | |
1895 | { | |
f25fce3e | 1896 | return call_int_hook(task_getpgid, 0, p); |
20510f2f JM |
1897 | } |
1898 | ||
1899 | int security_task_getsid(struct task_struct *p) | |
1900 | { | |
f25fce3e | 1901 | return call_int_hook(task_getsid, 0, p); |
20510f2f JM |
1902 | } |
1903 | ||
6326948f | 1904 | void security_current_getsecid_subj(u32 *secid) |
20510f2f | 1905 | { |
b1d9e6b0 | 1906 | *secid = 0; |
6326948f | 1907 | call_void_hook(current_getsecid_subj, secid); |
20510f2f | 1908 | } |
6326948f | 1909 | EXPORT_SYMBOL(security_current_getsecid_subj); |
4ebd7651 PM |
1910 | |
1911 | void security_task_getsecid_obj(struct task_struct *p, u32 *secid) | |
1912 | { | |
1913 | *secid = 0; | |
1914 | call_void_hook(task_getsecid_obj, p, secid); | |
1915 | } | |
1916 | EXPORT_SYMBOL(security_task_getsecid_obj); | |
20510f2f | 1917 | |
20510f2f JM |
1918 | int security_task_setnice(struct task_struct *p, int nice) |
1919 | { | |
f25fce3e | 1920 | return call_int_hook(task_setnice, 0, p, nice); |
20510f2f JM |
1921 | } |
1922 | ||
1923 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1924 | { | |
f25fce3e | 1925 | return call_int_hook(task_setioprio, 0, p, ioprio); |
20510f2f JM |
1926 | } |
1927 | ||
1928 | int security_task_getioprio(struct task_struct *p) | |
1929 | { | |
f25fce3e | 1930 | return call_int_hook(task_getioprio, 0, p); |
20510f2f JM |
1931 | } |
1932 | ||
791ec491 SS |
1933 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, |
1934 | unsigned int flags) | |
1935 | { | |
1936 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1937 | } | |
1938 | ||
8fd00b4d JS |
1939 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, |
1940 | struct rlimit *new_rlim) | |
20510f2f | 1941 | { |
f25fce3e | 1942 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); |
20510f2f JM |
1943 | } |
1944 | ||
b0ae1981 | 1945 | int security_task_setscheduler(struct task_struct *p) |
20510f2f | 1946 | { |
f25fce3e | 1947 | return call_int_hook(task_setscheduler, 0, p); |
20510f2f JM |
1948 | } |
1949 | ||
1950 | int security_task_getscheduler(struct task_struct *p) | |
1951 | { | |
f25fce3e | 1952 | return call_int_hook(task_getscheduler, 0, p); |
20510f2f JM |
1953 | } |
1954 | ||
1955 | int security_task_movememory(struct task_struct *p) | |
1956 | { | |
f25fce3e | 1957 | return call_int_hook(task_movememory, 0, p); |
20510f2f JM |
1958 | } |
1959 | ||
ae7795bc | 1960 | int security_task_kill(struct task_struct *p, struct kernel_siginfo *info, |
6b4f3d01 | 1961 | int sig, const struct cred *cred) |
20510f2f | 1962 | { |
6b4f3d01 | 1963 | return call_int_hook(task_kill, 0, p, info, sig, cred); |
20510f2f JM |
1964 | } |
1965 | ||
20510f2f | 1966 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, |
d84f4f99 | 1967 | unsigned long arg4, unsigned long arg5) |
20510f2f | 1968 | { |
b1d9e6b0 | 1969 | int thisrc; |
98e828a0 | 1970 | int rc = LSM_RET_DEFAULT(task_prctl); |
b1d9e6b0 CS |
1971 | struct security_hook_list *hp; |
1972 | ||
df0ce173 | 1973 | hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) { |
b1d9e6b0 | 1974 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); |
98e828a0 | 1975 | if (thisrc != LSM_RET_DEFAULT(task_prctl)) { |
b1d9e6b0 CS |
1976 | rc = thisrc; |
1977 | if (thisrc != 0) | |
1978 | break; | |
1979 | } | |
1980 | } | |
1981 | return rc; | |
20510f2f JM |
1982 | } |
1983 | ||
1984 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1985 | { | |
f25fce3e | 1986 | call_void_hook(task_to_inode, p, inode); |
20510f2f JM |
1987 | } |
1988 | ||
7cd4c5c2 FL |
1989 | int security_create_user_ns(const struct cred *cred) |
1990 | { | |
1991 | return call_int_hook(userns_create, 0, cred); | |
1992 | } | |
20510f2f JM |
1993 | |
1994 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1995 | { | |
f25fce3e | 1996 | return call_int_hook(ipc_permission, 0, ipcp, flag); |
20510f2f JM |
1997 | } |
1998 | ||
8a076191 AD |
1999 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) |
2000 | { | |
b1d9e6b0 | 2001 | *secid = 0; |
f25fce3e | 2002 | call_void_hook(ipc_getsecid, ipcp, secid); |
8a076191 AD |
2003 | } |
2004 | ||
20510f2f JM |
2005 | int security_msg_msg_alloc(struct msg_msg *msg) |
2006 | { | |
ecd5f82e CS |
2007 | int rc = lsm_msg_msg_alloc(msg); |
2008 | ||
2009 | if (unlikely(rc)) | |
2010 | return rc; | |
2011 | rc = call_int_hook(msg_msg_alloc_security, 0, msg); | |
2012 | if (unlikely(rc)) | |
2013 | security_msg_msg_free(msg); | |
2014 | return rc; | |
20510f2f JM |
2015 | } |
2016 | ||
2017 | void security_msg_msg_free(struct msg_msg *msg) | |
2018 | { | |
f25fce3e | 2019 | call_void_hook(msg_msg_free_security, msg); |
ecd5f82e CS |
2020 | kfree(msg->security); |
2021 | msg->security = NULL; | |
20510f2f JM |
2022 | } |
2023 | ||
d8c6e854 | 2024 | int security_msg_queue_alloc(struct kern_ipc_perm *msq) |
20510f2f | 2025 | { |
ecd5f82e CS |
2026 | int rc = lsm_ipc_alloc(msq); |
2027 | ||
2028 | if (unlikely(rc)) | |
2029 | return rc; | |
2030 | rc = call_int_hook(msg_queue_alloc_security, 0, msq); | |
2031 | if (unlikely(rc)) | |
2032 | security_msg_queue_free(msq); | |
2033 | return rc; | |
20510f2f JM |
2034 | } |
2035 | ||
d8c6e854 | 2036 | void security_msg_queue_free(struct kern_ipc_perm *msq) |
20510f2f | 2037 | { |
f25fce3e | 2038 | call_void_hook(msg_queue_free_security, msq); |
ecd5f82e CS |
2039 | kfree(msq->security); |
2040 | msq->security = NULL; | |
20510f2f JM |
2041 | } |
2042 | ||
d8c6e854 | 2043 | int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg) |
20510f2f | 2044 | { |
f25fce3e | 2045 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); |
20510f2f JM |
2046 | } |
2047 | ||
d8c6e854 | 2048 | int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd) |
20510f2f | 2049 | { |
f25fce3e | 2050 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); |
20510f2f JM |
2051 | } |
2052 | ||
d8c6e854 | 2053 | int security_msg_queue_msgsnd(struct kern_ipc_perm *msq, |
20510f2f JM |
2054 | struct msg_msg *msg, int msqflg) |
2055 | { | |
f25fce3e | 2056 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); |
20510f2f JM |
2057 | } |
2058 | ||
d8c6e854 | 2059 | int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg, |
20510f2f JM |
2060 | struct task_struct *target, long type, int mode) |
2061 | { | |
f25fce3e | 2062 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); |
20510f2f JM |
2063 | } |
2064 | ||
7191adff | 2065 | int security_shm_alloc(struct kern_ipc_perm *shp) |
20510f2f | 2066 | { |
ecd5f82e CS |
2067 | int rc = lsm_ipc_alloc(shp); |
2068 | ||
2069 | if (unlikely(rc)) | |
2070 | return rc; | |
2071 | rc = call_int_hook(shm_alloc_security, 0, shp); | |
2072 | if (unlikely(rc)) | |
2073 | security_shm_free(shp); | |
2074 | return rc; | |
20510f2f JM |
2075 | } |
2076 | ||
7191adff | 2077 | void security_shm_free(struct kern_ipc_perm *shp) |
20510f2f | 2078 | { |
f25fce3e | 2079 | call_void_hook(shm_free_security, shp); |
ecd5f82e CS |
2080 | kfree(shp->security); |
2081 | shp->security = NULL; | |
20510f2f JM |
2082 | } |
2083 | ||
7191adff | 2084 | int security_shm_associate(struct kern_ipc_perm *shp, int shmflg) |
20510f2f | 2085 | { |
f25fce3e | 2086 | return call_int_hook(shm_associate, 0, shp, shmflg); |
20510f2f JM |
2087 | } |
2088 | ||
7191adff | 2089 | int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd) |
20510f2f | 2090 | { |
f25fce3e | 2091 | return call_int_hook(shm_shmctl, 0, shp, cmd); |
20510f2f JM |
2092 | } |
2093 | ||
7191adff | 2094 | int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg) |
20510f2f | 2095 | { |
f25fce3e | 2096 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); |
20510f2f JM |
2097 | } |
2098 | ||
aefad959 | 2099 | int security_sem_alloc(struct kern_ipc_perm *sma) |
20510f2f | 2100 | { |
ecd5f82e CS |
2101 | int rc = lsm_ipc_alloc(sma); |
2102 | ||
2103 | if (unlikely(rc)) | |
2104 | return rc; | |
2105 | rc = call_int_hook(sem_alloc_security, 0, sma); | |
2106 | if (unlikely(rc)) | |
2107 | security_sem_free(sma); | |
2108 | return rc; | |
20510f2f JM |
2109 | } |
2110 | ||
aefad959 | 2111 | void security_sem_free(struct kern_ipc_perm *sma) |
20510f2f | 2112 | { |
f25fce3e | 2113 | call_void_hook(sem_free_security, sma); |
ecd5f82e CS |
2114 | kfree(sma->security); |
2115 | sma->security = NULL; | |
20510f2f JM |
2116 | } |
2117 | ||
aefad959 | 2118 | int security_sem_associate(struct kern_ipc_perm *sma, int semflg) |
20510f2f | 2119 | { |
f25fce3e | 2120 | return call_int_hook(sem_associate, 0, sma, semflg); |
20510f2f JM |
2121 | } |
2122 | ||
aefad959 | 2123 | int security_sem_semctl(struct kern_ipc_perm *sma, int cmd) |
20510f2f | 2124 | { |
f25fce3e | 2125 | return call_int_hook(sem_semctl, 0, sma, cmd); |
20510f2f JM |
2126 | } |
2127 | ||
aefad959 | 2128 | int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops, |
20510f2f JM |
2129 | unsigned nsops, int alter) |
2130 | { | |
f25fce3e | 2131 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); |
20510f2f JM |
2132 | } |
2133 | ||
2134 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
2135 | { | |
2136 | if (unlikely(inode && IS_PRIVATE(inode))) | |
2137 | return; | |
f25fce3e | 2138 | call_void_hook(d_instantiate, dentry, inode); |
20510f2f JM |
2139 | } |
2140 | EXPORT_SYMBOL(security_d_instantiate); | |
2141 | ||
c8e477c6 AV |
2142 | int security_getprocattr(struct task_struct *p, const char *lsm, |
2143 | const char *name, char **value) | |
20510f2f | 2144 | { |
6d9c939d CS |
2145 | struct security_hook_list *hp; |
2146 | ||
2147 | hlist_for_each_entry(hp, &security_hook_heads.getprocattr, list) { | |
2148 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
2149 | continue; | |
2150 | return hp->hook.getprocattr(p, name, value); | |
2151 | } | |
98e828a0 | 2152 | return LSM_RET_DEFAULT(getprocattr); |
20510f2f JM |
2153 | } |
2154 | ||
6d9c939d CS |
2155 | int security_setprocattr(const char *lsm, const char *name, void *value, |
2156 | size_t size) | |
20510f2f | 2157 | { |
6d9c939d CS |
2158 | struct security_hook_list *hp; |
2159 | ||
2160 | hlist_for_each_entry(hp, &security_hook_heads.setprocattr, list) { | |
2161 | if (lsm != NULL && strcmp(lsm, hp->lsm)) | |
2162 | continue; | |
2163 | return hp->hook.setprocattr(name, value, size); | |
2164 | } | |
98e828a0 | 2165 | return LSM_RET_DEFAULT(setprocattr); |
20510f2f JM |
2166 | } |
2167 | ||
2168 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
2169 | { | |
f25fce3e | 2170 | return call_int_hook(netlink_send, 0, sk, skb); |
20510f2f | 2171 | } |
20510f2f | 2172 | |
746df9b5 DQ |
2173 | int security_ismaclabel(const char *name) |
2174 | { | |
f25fce3e | 2175 | return call_int_hook(ismaclabel, 0, name); |
746df9b5 DQ |
2176 | } |
2177 | EXPORT_SYMBOL(security_ismaclabel); | |
2178 | ||
20510f2f JM |
2179 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) |
2180 | { | |
0550cfe8 KS |
2181 | struct security_hook_list *hp; |
2182 | int rc; | |
2183 | ||
2184 | /* | |
2185 | * Currently, only one LSM can implement secid_to_secctx (i.e this | |
2186 | * LSM hook is not "stackable"). | |
2187 | */ | |
2188 | hlist_for_each_entry(hp, &security_hook_heads.secid_to_secctx, list) { | |
2189 | rc = hp->hook.secid_to_secctx(secid, secdata, seclen); | |
2190 | if (rc != LSM_RET_DEFAULT(secid_to_secctx)) | |
2191 | return rc; | |
2192 | } | |
2193 | ||
2194 | return LSM_RET_DEFAULT(secid_to_secctx); | |
20510f2f JM |
2195 | } |
2196 | EXPORT_SYMBOL(security_secid_to_secctx); | |
2197 | ||
7bf570dc | 2198 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) |
63cb3449 | 2199 | { |
b1d9e6b0 | 2200 | *secid = 0; |
f25fce3e | 2201 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); |
63cb3449 DH |
2202 | } |
2203 | EXPORT_SYMBOL(security_secctx_to_secid); | |
2204 | ||
20510f2f JM |
2205 | void security_release_secctx(char *secdata, u32 seclen) |
2206 | { | |
f25fce3e | 2207 | call_void_hook(release_secctx, secdata, seclen); |
20510f2f JM |
2208 | } |
2209 | EXPORT_SYMBOL(security_release_secctx); | |
2210 | ||
6f3be9f5 AG |
2211 | void security_inode_invalidate_secctx(struct inode *inode) |
2212 | { | |
2213 | call_void_hook(inode_invalidate_secctx, inode); | |
2214 | } | |
2215 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
2216 | ||
1ee65e37 DQ |
2217 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) |
2218 | { | |
f25fce3e | 2219 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); |
1ee65e37 DQ |
2220 | } |
2221 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
2222 | ||
2223 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
2224 | { | |
f25fce3e | 2225 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); |
1ee65e37 DQ |
2226 | } |
2227 | EXPORT_SYMBOL(security_inode_setsecctx); | |
2228 | ||
2229 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
2230 | { | |
b1d9e6b0 | 2231 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); |
1ee65e37 DQ |
2232 | } |
2233 | EXPORT_SYMBOL(security_inode_getsecctx); | |
2234 | ||
344fa64e DH |
2235 | #ifdef CONFIG_WATCH_QUEUE |
2236 | int security_post_notification(const struct cred *w_cred, | |
2237 | const struct cred *cred, | |
2238 | struct watch_notification *n) | |
2239 | { | |
2240 | return call_int_hook(post_notification, 0, w_cred, cred, n); | |
2241 | } | |
2242 | #endif /* CONFIG_WATCH_QUEUE */ | |
2243 | ||
998f5040 DH |
2244 | #ifdef CONFIG_KEY_NOTIFICATIONS |
2245 | int security_watch_key(struct key *key) | |
2246 | { | |
2247 | return call_int_hook(watch_key, 0, key); | |
2248 | } | |
2249 | #endif | |
2250 | ||
20510f2f JM |
2251 | #ifdef CONFIG_SECURITY_NETWORK |
2252 | ||
3610cda5 | 2253 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) |
20510f2f | 2254 | { |
f25fce3e | 2255 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); |
20510f2f JM |
2256 | } |
2257 | EXPORT_SYMBOL(security_unix_stream_connect); | |
2258 | ||
2259 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
2260 | { | |
f25fce3e | 2261 | return call_int_hook(unix_may_send, 0, sock, other); |
20510f2f JM |
2262 | } |
2263 | EXPORT_SYMBOL(security_unix_may_send); | |
2264 | ||
2265 | int security_socket_create(int family, int type, int protocol, int kern) | |
2266 | { | |
f25fce3e | 2267 | return call_int_hook(socket_create, 0, family, type, protocol, kern); |
20510f2f JM |
2268 | } |
2269 | ||
2270 | int security_socket_post_create(struct socket *sock, int family, | |
2271 | int type, int protocol, int kern) | |
2272 | { | |
f25fce3e | 2273 | return call_int_hook(socket_post_create, 0, sock, family, type, |
20510f2f JM |
2274 | protocol, kern); |
2275 | } | |
2276 | ||
aae7cfcb DH |
2277 | int security_socket_socketpair(struct socket *socka, struct socket *sockb) |
2278 | { | |
2279 | return call_int_hook(socket_socketpair, 0, socka, sockb); | |
2280 | } | |
2281 | EXPORT_SYMBOL(security_socket_socketpair); | |
2282 | ||
20510f2f JM |
2283 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) |
2284 | { | |
f25fce3e | 2285 | return call_int_hook(socket_bind, 0, sock, address, addrlen); |
20510f2f JM |
2286 | } |
2287 | ||
2288 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
2289 | { | |
f25fce3e | 2290 | return call_int_hook(socket_connect, 0, sock, address, addrlen); |
20510f2f JM |
2291 | } |
2292 | ||
2293 | int security_socket_listen(struct socket *sock, int backlog) | |
2294 | { | |
f25fce3e | 2295 | return call_int_hook(socket_listen, 0, sock, backlog); |
20510f2f JM |
2296 | } |
2297 | ||
2298 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
2299 | { | |
f25fce3e | 2300 | return call_int_hook(socket_accept, 0, sock, newsock); |
20510f2f JM |
2301 | } |
2302 | ||
20510f2f JM |
2303 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) |
2304 | { | |
f25fce3e | 2305 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); |
20510f2f JM |
2306 | } |
2307 | ||
2308 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
2309 | int size, int flags) | |
2310 | { | |
f25fce3e | 2311 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); |
20510f2f JM |
2312 | } |
2313 | ||
2314 | int security_socket_getsockname(struct socket *sock) | |
2315 | { | |
f25fce3e | 2316 | return call_int_hook(socket_getsockname, 0, sock); |
20510f2f JM |
2317 | } |
2318 | ||
2319 | int security_socket_getpeername(struct socket *sock) | |
2320 | { | |
f25fce3e | 2321 | return call_int_hook(socket_getpeername, 0, sock); |
20510f2f JM |
2322 | } |
2323 | ||
2324 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
2325 | { | |
f25fce3e | 2326 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); |
20510f2f JM |
2327 | } |
2328 | ||
2329 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
2330 | { | |
f25fce3e | 2331 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); |
20510f2f JM |
2332 | } |
2333 | ||
2334 | int security_socket_shutdown(struct socket *sock, int how) | |
2335 | { | |
f25fce3e | 2336 | return call_int_hook(socket_shutdown, 0, sock, how); |
20510f2f JM |
2337 | } |
2338 | ||
2339 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
2340 | { | |
f25fce3e | 2341 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); |
20510f2f JM |
2342 | } |
2343 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
2344 | ||
b10b9c34 PM |
2345 | int security_socket_getpeersec_stream(struct socket *sock, sockptr_t optval, |
2346 | sockptr_t optlen, unsigned int len) | |
20510f2f | 2347 | { |
b1d9e6b0 | 2348 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, |
b10b9c34 | 2349 | optval, optlen, len); |
20510f2f JM |
2350 | } |
2351 | ||
2352 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
2353 | { | |
e308fd3b JB |
2354 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, |
2355 | skb, secid); | |
20510f2f JM |
2356 | } |
2357 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
2358 | ||
2359 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
2360 | { | |
f25fce3e | 2361 | return call_int_hook(sk_alloc_security, 0, sk, family, priority); |
20510f2f JM |
2362 | } |
2363 | ||
2364 | void security_sk_free(struct sock *sk) | |
2365 | { | |
f25fce3e | 2366 | call_void_hook(sk_free_security, sk); |
20510f2f JM |
2367 | } |
2368 | ||
2369 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
2370 | { | |
f25fce3e | 2371 | call_void_hook(sk_clone_security, sk, newsk); |
20510f2f | 2372 | } |
6230c9b4 | 2373 | EXPORT_SYMBOL(security_sk_clone); |
20510f2f | 2374 | |
3df98d79 | 2375 | void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic) |
20510f2f | 2376 | { |
3df98d79 | 2377 | call_void_hook(sk_getsecid, sk, &flic->flowic_secid); |
20510f2f JM |
2378 | } |
2379 | EXPORT_SYMBOL(security_sk_classify_flow); | |
2380 | ||
3df98d79 PM |
2381 | void security_req_classify_flow(const struct request_sock *req, |
2382 | struct flowi_common *flic) | |
20510f2f | 2383 | { |
3df98d79 | 2384 | call_void_hook(req_classify_flow, req, flic); |
20510f2f JM |
2385 | } |
2386 | EXPORT_SYMBOL(security_req_classify_flow); | |
2387 | ||
2388 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
2389 | { | |
f25fce3e | 2390 | call_void_hook(sock_graft, sk, parent); |
20510f2f JM |
2391 | } |
2392 | EXPORT_SYMBOL(security_sock_graft); | |
2393 | ||
41dd9596 | 2394 | int security_inet_conn_request(const struct sock *sk, |
20510f2f JM |
2395 | struct sk_buff *skb, struct request_sock *req) |
2396 | { | |
f25fce3e | 2397 | return call_int_hook(inet_conn_request, 0, sk, skb, req); |
20510f2f JM |
2398 | } |
2399 | EXPORT_SYMBOL(security_inet_conn_request); | |
2400 | ||
2401 | void security_inet_csk_clone(struct sock *newsk, | |
2402 | const struct request_sock *req) | |
2403 | { | |
f25fce3e | 2404 | call_void_hook(inet_csk_clone, newsk, req); |
20510f2f JM |
2405 | } |
2406 | ||
2407 | void security_inet_conn_established(struct sock *sk, | |
2408 | struct sk_buff *skb) | |
2409 | { | |
f25fce3e | 2410 | call_void_hook(inet_conn_established, sk, skb); |
20510f2f | 2411 | } |
72e89f50 | 2412 | EXPORT_SYMBOL(security_inet_conn_established); |
20510f2f | 2413 | |
2606fd1f EP |
2414 | int security_secmark_relabel_packet(u32 secid) |
2415 | { | |
f25fce3e | 2416 | return call_int_hook(secmark_relabel_packet, 0, secid); |
2606fd1f EP |
2417 | } |
2418 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
2419 | ||
2420 | void security_secmark_refcount_inc(void) | |
2421 | { | |
f25fce3e | 2422 | call_void_hook(secmark_refcount_inc); |
2606fd1f EP |
2423 | } |
2424 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
2425 | ||
2426 | void security_secmark_refcount_dec(void) | |
2427 | { | |
f25fce3e | 2428 | call_void_hook(secmark_refcount_dec); |
2606fd1f EP |
2429 | } |
2430 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
2431 | ||
5dbbaf2d PM |
2432 | int security_tun_dev_alloc_security(void **security) |
2433 | { | |
f25fce3e | 2434 | return call_int_hook(tun_dev_alloc_security, 0, security); |
5dbbaf2d PM |
2435 | } |
2436 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
2437 | ||
2438 | void security_tun_dev_free_security(void *security) | |
2439 | { | |
f25fce3e | 2440 | call_void_hook(tun_dev_free_security, security); |
5dbbaf2d PM |
2441 | } |
2442 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
2443 | ||
2b980dbd PM |
2444 | int security_tun_dev_create(void) |
2445 | { | |
f25fce3e | 2446 | return call_int_hook(tun_dev_create, 0); |
2b980dbd PM |
2447 | } |
2448 | EXPORT_SYMBOL(security_tun_dev_create); | |
2449 | ||
5dbbaf2d | 2450 | int security_tun_dev_attach_queue(void *security) |
2b980dbd | 2451 | { |
f25fce3e | 2452 | return call_int_hook(tun_dev_attach_queue, 0, security); |
2b980dbd | 2453 | } |
5dbbaf2d | 2454 | EXPORT_SYMBOL(security_tun_dev_attach_queue); |
2b980dbd | 2455 | |
5dbbaf2d | 2456 | int security_tun_dev_attach(struct sock *sk, void *security) |
2b980dbd | 2457 | { |
f25fce3e | 2458 | return call_int_hook(tun_dev_attach, 0, sk, security); |
2b980dbd PM |
2459 | } |
2460 | EXPORT_SYMBOL(security_tun_dev_attach); | |
2461 | ||
5dbbaf2d PM |
2462 | int security_tun_dev_open(void *security) |
2463 | { | |
f25fce3e | 2464 | return call_int_hook(tun_dev_open, 0, security); |
5dbbaf2d PM |
2465 | } |
2466 | EXPORT_SYMBOL(security_tun_dev_open); | |
2467 | ||
c081d53f | 2468 | int security_sctp_assoc_request(struct sctp_association *asoc, struct sk_buff *skb) |
72e89f50 | 2469 | { |
c081d53f | 2470 | return call_int_hook(sctp_assoc_request, 0, asoc, skb); |
72e89f50 RH |
2471 | } |
2472 | EXPORT_SYMBOL(security_sctp_assoc_request); | |
2473 | ||
2474 | int security_sctp_bind_connect(struct sock *sk, int optname, | |
2475 | struct sockaddr *address, int addrlen) | |
2476 | { | |
2477 | return call_int_hook(sctp_bind_connect, 0, sk, optname, | |
2478 | address, addrlen); | |
2479 | } | |
2480 | EXPORT_SYMBOL(security_sctp_bind_connect); | |
2481 | ||
c081d53f | 2482 | void security_sctp_sk_clone(struct sctp_association *asoc, struct sock *sk, |
72e89f50 RH |
2483 | struct sock *newsk) |
2484 | { | |
c081d53f | 2485 | call_void_hook(sctp_sk_clone, asoc, sk, newsk); |
72e89f50 RH |
2486 | } |
2487 | EXPORT_SYMBOL(security_sctp_sk_clone); | |
2488 | ||
5e50f5d4 OM |
2489 | int security_sctp_assoc_established(struct sctp_association *asoc, |
2490 | struct sk_buff *skb) | |
2491 | { | |
2492 | return call_int_hook(sctp_assoc_established, 0, asoc, skb); | |
2493 | } | |
2494 | EXPORT_SYMBOL(security_sctp_assoc_established); | |
2495 | ||
20510f2f JM |
2496 | #endif /* CONFIG_SECURITY_NETWORK */ |
2497 | ||
d291f1a6 DJ |
2498 | #ifdef CONFIG_SECURITY_INFINIBAND |
2499 | ||
2500 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
2501 | { | |
2502 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
2503 | } | |
2504 | EXPORT_SYMBOL(security_ib_pkey_access); | |
2505 | ||
47a2b338 DJ |
2506 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) |
2507 | { | |
2508 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
2509 | } | |
2510 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
2511 | ||
d291f1a6 DJ |
2512 | int security_ib_alloc_security(void **sec) |
2513 | { | |
2514 | return call_int_hook(ib_alloc_security, 0, sec); | |
2515 | } | |
2516 | EXPORT_SYMBOL(security_ib_alloc_security); | |
2517 | ||
2518 | void security_ib_free_security(void *sec) | |
2519 | { | |
2520 | call_void_hook(ib_free_security, sec); | |
2521 | } | |
2522 | EXPORT_SYMBOL(security_ib_free_security); | |
2523 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
2524 | ||
20510f2f JM |
2525 | #ifdef CONFIG_SECURITY_NETWORK_XFRM |
2526 | ||
52a4c640 NA |
2527 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, |
2528 | struct xfrm_user_sec_ctx *sec_ctx, | |
2529 | gfp_t gfp) | |
20510f2f | 2530 | { |
f25fce3e | 2531 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); |
20510f2f JM |
2532 | } |
2533 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
2534 | ||
03e1ad7b PM |
2535 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, |
2536 | struct xfrm_sec_ctx **new_ctxp) | |
20510f2f | 2537 | { |
f25fce3e | 2538 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); |
20510f2f JM |
2539 | } |
2540 | ||
03e1ad7b | 2541 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) |
20510f2f | 2542 | { |
f25fce3e | 2543 | call_void_hook(xfrm_policy_free_security, ctx); |
20510f2f JM |
2544 | } |
2545 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
2546 | ||
03e1ad7b | 2547 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) |
20510f2f | 2548 | { |
f25fce3e | 2549 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); |
20510f2f JM |
2550 | } |
2551 | ||
2e5aa866 PM |
2552 | int security_xfrm_state_alloc(struct xfrm_state *x, |
2553 | struct xfrm_user_sec_ctx *sec_ctx) | |
20510f2f | 2554 | { |
f25fce3e | 2555 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); |
20510f2f JM |
2556 | } |
2557 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
2558 | ||
2559 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
2560 | struct xfrm_sec_ctx *polsec, u32 secid) | |
2561 | { | |
f25fce3e | 2562 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); |
20510f2f JM |
2563 | } |
2564 | ||
2565 | int security_xfrm_state_delete(struct xfrm_state *x) | |
2566 | { | |
f25fce3e | 2567 | return call_int_hook(xfrm_state_delete_security, 0, x); |
20510f2f JM |
2568 | } |
2569 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
2570 | ||
2571 | void security_xfrm_state_free(struct xfrm_state *x) | |
2572 | { | |
f25fce3e | 2573 | call_void_hook(xfrm_state_free_security, x); |
20510f2f JM |
2574 | } |
2575 | ||
8a922805 | 2576 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid) |
20510f2f | 2577 | { |
8a922805 | 2578 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid); |
20510f2f JM |
2579 | } |
2580 | ||
2581 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
e33f7704 | 2582 | struct xfrm_policy *xp, |
3df98d79 | 2583 | const struct flowi_common *flic) |
20510f2f | 2584 | { |
b1d9e6b0 | 2585 | struct security_hook_list *hp; |
98e828a0 | 2586 | int rc = LSM_RET_DEFAULT(xfrm_state_pol_flow_match); |
b1d9e6b0 CS |
2587 | |
2588 | /* | |
2589 | * Since this function is expected to return 0 or 1, the judgment | |
2590 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
2591 | * we can use the first LSM's judgment because currently only SELinux | |
2592 | * supplies this call. | |
2593 | * | |
2594 | * For speed optimization, we explicitly break the loop rather than | |
2595 | * using the macro | |
2596 | */ | |
df0ce173 | 2597 | hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, |
b1d9e6b0 | 2598 | list) { |
3df98d79 | 2599 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, flic); |
b1d9e6b0 CS |
2600 | break; |
2601 | } | |
2602 | return rc; | |
20510f2f JM |
2603 | } |
2604 | ||
2605 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
2606 | { | |
f25fce3e | 2607 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); |
20510f2f JM |
2608 | } |
2609 | ||
3df98d79 | 2610 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi_common *flic) |
20510f2f | 2611 | { |
3df98d79 | 2612 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &flic->flowic_secid, |
f25fce3e | 2613 | 0); |
20510f2f JM |
2614 | |
2615 | BUG_ON(rc); | |
2616 | } | |
2617 | EXPORT_SYMBOL(security_skb_classify_flow); | |
2618 | ||
2619 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
2620 | ||
2621 | #ifdef CONFIG_KEYS | |
2622 | ||
d84f4f99 DH |
2623 | int security_key_alloc(struct key *key, const struct cred *cred, |
2624 | unsigned long flags) | |
20510f2f | 2625 | { |
f25fce3e | 2626 | return call_int_hook(key_alloc, 0, key, cred, flags); |
20510f2f JM |
2627 | } |
2628 | ||
2629 | void security_key_free(struct key *key) | |
2630 | { | |
f25fce3e | 2631 | call_void_hook(key_free, key); |
20510f2f JM |
2632 | } |
2633 | ||
8c0637e9 DH |
2634 | int security_key_permission(key_ref_t key_ref, const struct cred *cred, |
2635 | enum key_need_perm need_perm) | |
20510f2f | 2636 | { |
8c0637e9 | 2637 | return call_int_hook(key_permission, 0, key_ref, cred, need_perm); |
20510f2f JM |
2638 | } |
2639 | ||
70a5bb72 DH |
2640 | int security_key_getsecurity(struct key *key, char **_buffer) |
2641 | { | |
b1d9e6b0 | 2642 | *_buffer = NULL; |
f25fce3e | 2643 | return call_int_hook(key_getsecurity, 0, key, _buffer); |
70a5bb72 DH |
2644 | } |
2645 | ||
20510f2f | 2646 | #endif /* CONFIG_KEYS */ |
03d37d25 AD |
2647 | |
2648 | #ifdef CONFIG_AUDIT | |
2649 | ||
2650 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
2651 | { | |
f25fce3e | 2652 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); |
03d37d25 AD |
2653 | } |
2654 | ||
2655 | int security_audit_rule_known(struct audit_krule *krule) | |
2656 | { | |
f25fce3e | 2657 | return call_int_hook(audit_rule_known, 0, krule); |
03d37d25 AD |
2658 | } |
2659 | ||
2660 | void security_audit_rule_free(void *lsmrule) | |
2661 | { | |
f25fce3e | 2662 | call_void_hook(audit_rule_free, lsmrule); |
03d37d25 AD |
2663 | } |
2664 | ||
90462a5b | 2665 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule) |
03d37d25 | 2666 | { |
90462a5b | 2667 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule); |
03d37d25 | 2668 | } |
b1d9e6b0 | 2669 | #endif /* CONFIG_AUDIT */ |
afdb09c7 CF |
2670 | |
2671 | #ifdef CONFIG_BPF_SYSCALL | |
2672 | int security_bpf(int cmd, union bpf_attr *attr, unsigned int size) | |
2673 | { | |
2674 | return call_int_hook(bpf, 0, cmd, attr, size); | |
2675 | } | |
2676 | int security_bpf_map(struct bpf_map *map, fmode_t fmode) | |
2677 | { | |
2678 | return call_int_hook(bpf_map, 0, map, fmode); | |
2679 | } | |
2680 | int security_bpf_prog(struct bpf_prog *prog) | |
2681 | { | |
2682 | return call_int_hook(bpf_prog, 0, prog); | |
2683 | } | |
2684 | int security_bpf_map_alloc(struct bpf_map *map) | |
2685 | { | |
2686 | return call_int_hook(bpf_map_alloc_security, 0, map); | |
2687 | } | |
2688 | int security_bpf_prog_alloc(struct bpf_prog_aux *aux) | |
2689 | { | |
2690 | return call_int_hook(bpf_prog_alloc_security, 0, aux); | |
2691 | } | |
2692 | void security_bpf_map_free(struct bpf_map *map) | |
2693 | { | |
2694 | call_void_hook(bpf_map_free_security, map); | |
2695 | } | |
2696 | void security_bpf_prog_free(struct bpf_prog_aux *aux) | |
2697 | { | |
2698 | call_void_hook(bpf_prog_free_security, aux); | |
2699 | } | |
2700 | #endif /* CONFIG_BPF_SYSCALL */ | |
9e47d31d MG |
2701 | |
2702 | int security_locked_down(enum lockdown_reason what) | |
2703 | { | |
2704 | return call_int_hook(locked_down, 0, what); | |
2705 | } | |
2706 | EXPORT_SYMBOL(security_locked_down); | |
da97e184 JFG |
2707 | |
2708 | #ifdef CONFIG_PERF_EVENTS | |
2709 | int security_perf_event_open(struct perf_event_attr *attr, int type) | |
2710 | { | |
2711 | return call_int_hook(perf_event_open, 0, attr, type); | |
2712 | } | |
2713 | ||
2714 | int security_perf_event_alloc(struct perf_event *event) | |
2715 | { | |
2716 | return call_int_hook(perf_event_alloc, 0, event); | |
2717 | } | |
2718 | ||
2719 | void security_perf_event_free(struct perf_event *event) | |
2720 | { | |
2721 | call_void_hook(perf_event_free, event); | |
2722 | } | |
2723 | ||
2724 | int security_perf_event_read(struct perf_event *event) | |
2725 | { | |
2726 | return call_int_hook(perf_event_read, 0, event); | |
2727 | } | |
2728 | ||
2729 | int security_perf_event_write(struct perf_event *event) | |
2730 | { | |
2731 | return call_int_hook(perf_event_write, 0, event); | |
2732 | } | |
2733 | #endif /* CONFIG_PERF_EVENTS */ | |
cdc1404a PM |
2734 | |
2735 | #ifdef CONFIG_IO_URING | |
2736 | int security_uring_override_creds(const struct cred *new) | |
2737 | { | |
2738 | return call_int_hook(uring_override_creds, 0, new); | |
2739 | } | |
2740 | ||
2741 | int security_uring_sqpoll(void) | |
2742 | { | |
2743 | return call_int_hook(uring_sqpoll, 0); | |
2744 | } | |
2a584012 LC |
2745 | int security_uring_cmd(struct io_uring_cmd *ioucmd) |
2746 | { | |
2747 | return call_int_hook(uring_cmd, 0, ioucmd); | |
2748 | } | |
cdc1404a | 2749 | #endif /* CONFIG_IO_URING */ |