]>
Commit | Line | Data |
---|---|---|
1 | /* | |
2 | * Security plug functions | |
3 | * | |
4 | * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com> | |
5 | * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com> | |
6 | * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com> | |
7 | * Copyright (C) 2016 Mellanox Technologies | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | */ | |
14 | ||
15 | #include <linux/capability.h> | |
16 | #include <linux/dcache.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/init.h> | |
19 | #include <linux/kernel.h> | |
20 | #include <linux/lsm_hooks.h> | |
21 | #include <linux/integrity.h> | |
22 | #include <linux/ima.h> | |
23 | #include <linux/evm.h> | |
24 | #include <linux/fsnotify.h> | |
25 | #include <linux/mman.h> | |
26 | #include <linux/mount.h> | |
27 | #include <linux/personality.h> | |
28 | #include <linux/backing-dev.h> | |
29 | #include <linux/string.h> | |
30 | #include <net/flow.h> | |
31 | ||
32 | #define MAX_LSM_EVM_XATTR 2 | |
33 | ||
34 | /* Maximum number of letters for an LSM name string */ | |
35 | #define SECURITY_NAME_MAX 10 | |
36 | ||
37 | struct security_hook_heads security_hook_heads __lsm_ro_after_init; | |
38 | static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain); | |
39 | ||
40 | char *lsm_names; | |
41 | /* Boot-time LSM user choice */ | |
42 | static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] = | |
43 | CONFIG_DEFAULT_SECURITY; | |
44 | ||
45 | static void __init do_security_initcalls(void) | |
46 | { | |
47 | initcall_t *call; | |
48 | call = __security_initcall_start; | |
49 | while (call < __security_initcall_end) { | |
50 | (*call) (); | |
51 | call++; | |
52 | } | |
53 | } | |
54 | ||
55 | /** | |
56 | * security_init - initializes the security framework | |
57 | * | |
58 | * This should be called early in the kernel initialization sequence. | |
59 | */ | |
60 | int __init security_init(void) | |
61 | { | |
62 | int i; | |
63 | struct list_head *list = (struct list_head *) &security_hook_heads; | |
64 | ||
65 | for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head); | |
66 | i++) | |
67 | INIT_LIST_HEAD(&list[i]); | |
68 | pr_info("Security Framework initialized\n"); | |
69 | ||
70 | /* | |
71 | * Load minor LSMs, with the capability module always first. | |
72 | */ | |
73 | capability_add_hooks(); | |
74 | yama_add_hooks(); | |
75 | loadpin_add_hooks(); | |
76 | ||
77 | /* | |
78 | * Load all the remaining security modules. | |
79 | */ | |
80 | do_security_initcalls(); | |
81 | ||
82 | return 0; | |
83 | } | |
84 | ||
85 | /* Save user chosen LSM */ | |
86 | static int __init choose_lsm(char *str) | |
87 | { | |
88 | strncpy(chosen_lsm, str, SECURITY_NAME_MAX); | |
89 | return 1; | |
90 | } | |
91 | __setup("security=", choose_lsm); | |
92 | ||
93 | static bool match_last_lsm(const char *list, const char *lsm) | |
94 | { | |
95 | const char *last; | |
96 | ||
97 | if (WARN_ON(!list || !lsm)) | |
98 | return false; | |
99 | last = strrchr(list, ','); | |
100 | if (last) | |
101 | /* Pass the comma, strcmp() will check for '\0' */ | |
102 | last++; | |
103 | else | |
104 | last = list; | |
105 | return !strcmp(last, lsm); | |
106 | } | |
107 | ||
108 | static int lsm_append(char *new, char **result) | |
109 | { | |
110 | char *cp; | |
111 | ||
112 | if (*result == NULL) { | |
113 | *result = kstrdup(new, GFP_KERNEL); | |
114 | } else { | |
115 | /* Check if it is the last registered name */ | |
116 | if (match_last_lsm(*result, new)) | |
117 | return 0; | |
118 | cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new); | |
119 | if (cp == NULL) | |
120 | return -ENOMEM; | |
121 | kfree(*result); | |
122 | *result = cp; | |
123 | } | |
124 | return 0; | |
125 | } | |
126 | ||
127 | /** | |
128 | * security_module_enable - Load given security module on boot ? | |
129 | * @module: the name of the module | |
130 | * | |
131 | * Each LSM must pass this method before registering its own operations | |
132 | * to avoid security registration races. This method may also be used | |
133 | * to check if your LSM is currently loaded during kernel initialization. | |
134 | * | |
135 | * Returns: | |
136 | * | |
137 | * true if: | |
138 | * | |
139 | * - The passed LSM is the one chosen by user at boot time, | |
140 | * - or the passed LSM is configured as the default and the user did not | |
141 | * choose an alternate LSM at boot time. | |
142 | * | |
143 | * Otherwise, return false. | |
144 | */ | |
145 | int __init security_module_enable(const char *module) | |
146 | { | |
147 | return !strcmp(module, chosen_lsm); | |
148 | } | |
149 | ||
150 | /** | |
151 | * security_add_hooks - Add a modules hooks to the hook lists. | |
152 | * @hooks: the hooks to add | |
153 | * @count: the number of hooks to add | |
154 | * @lsm: the name of the security module | |
155 | * | |
156 | * Each LSM has to register its hooks with the infrastructure. | |
157 | */ | |
158 | void __init security_add_hooks(struct security_hook_list *hooks, int count, | |
159 | char *lsm) | |
160 | { | |
161 | int i; | |
162 | ||
163 | for (i = 0; i < count; i++) { | |
164 | hooks[i].lsm = lsm; | |
165 | list_add_tail_rcu(&hooks[i].list, hooks[i].head); | |
166 | } | |
167 | if (lsm_append(lsm, &lsm_names) < 0) | |
168 | panic("%s - Cannot get early memory.\n", __func__); | |
169 | } | |
170 | ||
171 | int call_lsm_notifier(enum lsm_event event, void *data) | |
172 | { | |
173 | return atomic_notifier_call_chain(&lsm_notifier_chain, event, data); | |
174 | } | |
175 | EXPORT_SYMBOL(call_lsm_notifier); | |
176 | ||
177 | int register_lsm_notifier(struct notifier_block *nb) | |
178 | { | |
179 | return atomic_notifier_chain_register(&lsm_notifier_chain, nb); | |
180 | } | |
181 | EXPORT_SYMBOL(register_lsm_notifier); | |
182 | ||
183 | int unregister_lsm_notifier(struct notifier_block *nb) | |
184 | { | |
185 | return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb); | |
186 | } | |
187 | EXPORT_SYMBOL(unregister_lsm_notifier); | |
188 | ||
189 | /* | |
190 | * Hook list operation macros. | |
191 | * | |
192 | * call_void_hook: | |
193 | * This is a hook that does not return a value. | |
194 | * | |
195 | * call_int_hook: | |
196 | * This is a hook that returns a value. | |
197 | */ | |
198 | ||
199 | #define call_void_hook(FUNC, ...) \ | |
200 | do { \ | |
201 | struct security_hook_list *P; \ | |
202 | \ | |
203 | list_for_each_entry(P, &security_hook_heads.FUNC, list) \ | |
204 | P->hook.FUNC(__VA_ARGS__); \ | |
205 | } while (0) | |
206 | ||
207 | #define call_int_hook(FUNC, IRC, ...) ({ \ | |
208 | int RC = IRC; \ | |
209 | do { \ | |
210 | struct security_hook_list *P; \ | |
211 | \ | |
212 | list_for_each_entry(P, &security_hook_heads.FUNC, list) { \ | |
213 | RC = P->hook.FUNC(__VA_ARGS__); \ | |
214 | if (RC != 0) \ | |
215 | break; \ | |
216 | } \ | |
217 | } while (0); \ | |
218 | RC; \ | |
219 | }) | |
220 | ||
221 | /* Security operations */ | |
222 | ||
223 | int security_binder_set_context_mgr(struct task_struct *mgr) | |
224 | { | |
225 | return call_int_hook(binder_set_context_mgr, 0, mgr); | |
226 | } | |
227 | ||
228 | int security_binder_transaction(struct task_struct *from, | |
229 | struct task_struct *to) | |
230 | { | |
231 | return call_int_hook(binder_transaction, 0, from, to); | |
232 | } | |
233 | ||
234 | int security_binder_transfer_binder(struct task_struct *from, | |
235 | struct task_struct *to) | |
236 | { | |
237 | return call_int_hook(binder_transfer_binder, 0, from, to); | |
238 | } | |
239 | ||
240 | int security_binder_transfer_file(struct task_struct *from, | |
241 | struct task_struct *to, struct file *file) | |
242 | { | |
243 | return call_int_hook(binder_transfer_file, 0, from, to, file); | |
244 | } | |
245 | ||
246 | int security_ptrace_access_check(struct task_struct *child, unsigned int mode) | |
247 | { | |
248 | return call_int_hook(ptrace_access_check, 0, child, mode); | |
249 | } | |
250 | ||
251 | int security_ptrace_traceme(struct task_struct *parent) | |
252 | { | |
253 | return call_int_hook(ptrace_traceme, 0, parent); | |
254 | } | |
255 | ||
256 | int security_capget(struct task_struct *target, | |
257 | kernel_cap_t *effective, | |
258 | kernel_cap_t *inheritable, | |
259 | kernel_cap_t *permitted) | |
260 | { | |
261 | return call_int_hook(capget, 0, target, | |
262 | effective, inheritable, permitted); | |
263 | } | |
264 | ||
265 | int security_capset(struct cred *new, const struct cred *old, | |
266 | const kernel_cap_t *effective, | |
267 | const kernel_cap_t *inheritable, | |
268 | const kernel_cap_t *permitted) | |
269 | { | |
270 | return call_int_hook(capset, 0, new, old, | |
271 | effective, inheritable, permitted); | |
272 | } | |
273 | ||
274 | int security_capable(const struct cred *cred, struct user_namespace *ns, | |
275 | int cap) | |
276 | { | |
277 | return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT); | |
278 | } | |
279 | ||
280 | int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, | |
281 | int cap) | |
282 | { | |
283 | return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT); | |
284 | } | |
285 | ||
286 | int security_quotactl(int cmds, int type, int id, struct super_block *sb) | |
287 | { | |
288 | return call_int_hook(quotactl, 0, cmds, type, id, sb); | |
289 | } | |
290 | ||
291 | int security_quota_on(struct dentry *dentry) | |
292 | { | |
293 | return call_int_hook(quota_on, 0, dentry); | |
294 | } | |
295 | ||
296 | int security_syslog(int type) | |
297 | { | |
298 | return call_int_hook(syslog, 0, type); | |
299 | } | |
300 | ||
301 | int security_settime64(const struct timespec64 *ts, const struct timezone *tz) | |
302 | { | |
303 | return call_int_hook(settime, 0, ts, tz); | |
304 | } | |
305 | ||
306 | int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) | |
307 | { | |
308 | struct security_hook_list *hp; | |
309 | int cap_sys_admin = 1; | |
310 | int rc; | |
311 | ||
312 | /* | |
313 | * The module will respond with a positive value if | |
314 | * it thinks the __vm_enough_memory() call should be | |
315 | * made with the cap_sys_admin set. If all of the modules | |
316 | * agree that it should be set it will. If any module | |
317 | * thinks it should not be set it won't. | |
318 | */ | |
319 | list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { | |
320 | rc = hp->hook.vm_enough_memory(mm, pages); | |
321 | if (rc <= 0) { | |
322 | cap_sys_admin = 0; | |
323 | break; | |
324 | } | |
325 | } | |
326 | return __vm_enough_memory(mm, pages, cap_sys_admin); | |
327 | } | |
328 | ||
329 | int security_bprm_set_creds(struct linux_binprm *bprm) | |
330 | { | |
331 | return call_int_hook(bprm_set_creds, 0, bprm); | |
332 | } | |
333 | ||
334 | int security_bprm_check(struct linux_binprm *bprm) | |
335 | { | |
336 | int ret; | |
337 | ||
338 | ret = call_int_hook(bprm_check_security, 0, bprm); | |
339 | if (ret) | |
340 | return ret; | |
341 | return ima_bprm_check(bprm); | |
342 | } | |
343 | ||
344 | void security_bprm_committing_creds(struct linux_binprm *bprm) | |
345 | { | |
346 | call_void_hook(bprm_committing_creds, bprm); | |
347 | } | |
348 | ||
349 | void security_bprm_committed_creds(struct linux_binprm *bprm) | |
350 | { | |
351 | call_void_hook(bprm_committed_creds, bprm); | |
352 | } | |
353 | ||
354 | int security_bprm_secureexec(struct linux_binprm *bprm) | |
355 | { | |
356 | return call_int_hook(bprm_secureexec, 0, bprm); | |
357 | } | |
358 | ||
359 | int security_sb_alloc(struct super_block *sb) | |
360 | { | |
361 | return call_int_hook(sb_alloc_security, 0, sb); | |
362 | } | |
363 | ||
364 | void security_sb_free(struct super_block *sb) | |
365 | { | |
366 | call_void_hook(sb_free_security, sb); | |
367 | } | |
368 | ||
369 | int security_sb_copy_data(char *orig, char *copy) | |
370 | { | |
371 | return call_int_hook(sb_copy_data, 0, orig, copy); | |
372 | } | |
373 | EXPORT_SYMBOL(security_sb_copy_data); | |
374 | ||
375 | int security_sb_remount(struct super_block *sb, void *data) | |
376 | { | |
377 | return call_int_hook(sb_remount, 0, sb, data); | |
378 | } | |
379 | ||
380 | int security_sb_kern_mount(struct super_block *sb, int flags, void *data) | |
381 | { | |
382 | return call_int_hook(sb_kern_mount, 0, sb, flags, data); | |
383 | } | |
384 | ||
385 | int security_sb_show_options(struct seq_file *m, struct super_block *sb) | |
386 | { | |
387 | return call_int_hook(sb_show_options, 0, m, sb); | |
388 | } | |
389 | ||
390 | int security_sb_statfs(struct dentry *dentry) | |
391 | { | |
392 | return call_int_hook(sb_statfs, 0, dentry); | |
393 | } | |
394 | ||
395 | int security_sb_mount(const char *dev_name, const struct path *path, | |
396 | const char *type, unsigned long flags, void *data) | |
397 | { | |
398 | return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); | |
399 | } | |
400 | ||
401 | int security_sb_umount(struct vfsmount *mnt, int flags) | |
402 | { | |
403 | return call_int_hook(sb_umount, 0, mnt, flags); | |
404 | } | |
405 | ||
406 | int security_sb_pivotroot(const struct path *old_path, const struct path *new_path) | |
407 | { | |
408 | return call_int_hook(sb_pivotroot, 0, old_path, new_path); | |
409 | } | |
410 | ||
411 | int security_sb_set_mnt_opts(struct super_block *sb, | |
412 | struct security_mnt_opts *opts, | |
413 | unsigned long kern_flags, | |
414 | unsigned long *set_kern_flags) | |
415 | { | |
416 | return call_int_hook(sb_set_mnt_opts, | |
417 | opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb, | |
418 | opts, kern_flags, set_kern_flags); | |
419 | } | |
420 | EXPORT_SYMBOL(security_sb_set_mnt_opts); | |
421 | ||
422 | int security_sb_clone_mnt_opts(const struct super_block *oldsb, | |
423 | struct super_block *newsb, | |
424 | unsigned long kern_flags, | |
425 | unsigned long *set_kern_flags) | |
426 | { | |
427 | return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb, | |
428 | kern_flags, set_kern_flags); | |
429 | } | |
430 | EXPORT_SYMBOL(security_sb_clone_mnt_opts); | |
431 | ||
432 | int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) | |
433 | { | |
434 | return call_int_hook(sb_parse_opts_str, 0, options, opts); | |
435 | } | |
436 | EXPORT_SYMBOL(security_sb_parse_opts_str); | |
437 | ||
438 | int security_inode_alloc(struct inode *inode) | |
439 | { | |
440 | inode->i_security = NULL; | |
441 | return call_int_hook(inode_alloc_security, 0, inode); | |
442 | } | |
443 | ||
444 | void security_inode_free(struct inode *inode) | |
445 | { | |
446 | integrity_inode_free(inode); | |
447 | call_void_hook(inode_free_security, inode); | |
448 | } | |
449 | ||
450 | int security_dentry_init_security(struct dentry *dentry, int mode, | |
451 | const struct qstr *name, void **ctx, | |
452 | u32 *ctxlen) | |
453 | { | |
454 | return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, | |
455 | name, ctx, ctxlen); | |
456 | } | |
457 | EXPORT_SYMBOL(security_dentry_init_security); | |
458 | ||
459 | int security_dentry_create_files_as(struct dentry *dentry, int mode, | |
460 | struct qstr *name, | |
461 | const struct cred *old, struct cred *new) | |
462 | { | |
463 | return call_int_hook(dentry_create_files_as, 0, dentry, mode, | |
464 | name, old, new); | |
465 | } | |
466 | EXPORT_SYMBOL(security_dentry_create_files_as); | |
467 | ||
468 | int security_inode_init_security(struct inode *inode, struct inode *dir, | |
469 | const struct qstr *qstr, | |
470 | const initxattrs initxattrs, void *fs_data) | |
471 | { | |
472 | struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; | |
473 | struct xattr *lsm_xattr, *evm_xattr, *xattr; | |
474 | int ret; | |
475 | ||
476 | if (unlikely(IS_PRIVATE(inode))) | |
477 | return 0; | |
478 | ||
479 | if (!initxattrs) | |
480 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, | |
481 | dir, qstr, NULL, NULL, NULL); | |
482 | memset(new_xattrs, 0, sizeof(new_xattrs)); | |
483 | lsm_xattr = new_xattrs; | |
484 | ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, | |
485 | &lsm_xattr->name, | |
486 | &lsm_xattr->value, | |
487 | &lsm_xattr->value_len); | |
488 | if (ret) | |
489 | goto out; | |
490 | ||
491 | evm_xattr = lsm_xattr + 1; | |
492 | ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); | |
493 | if (ret) | |
494 | goto out; | |
495 | ret = initxattrs(inode, new_xattrs, fs_data); | |
496 | out: | |
497 | for (xattr = new_xattrs; xattr->value != NULL; xattr++) | |
498 | kfree(xattr->value); | |
499 | return (ret == -EOPNOTSUPP) ? 0 : ret; | |
500 | } | |
501 | EXPORT_SYMBOL(security_inode_init_security); | |
502 | ||
503 | int security_old_inode_init_security(struct inode *inode, struct inode *dir, | |
504 | const struct qstr *qstr, const char **name, | |
505 | void **value, size_t *len) | |
506 | { | |
507 | if (unlikely(IS_PRIVATE(inode))) | |
508 | return -EOPNOTSUPP; | |
509 | return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, | |
510 | qstr, name, value, len); | |
511 | } | |
512 | EXPORT_SYMBOL(security_old_inode_init_security); | |
513 | ||
514 | #ifdef CONFIG_SECURITY_PATH | |
515 | int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode, | |
516 | unsigned int dev) | |
517 | { | |
518 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) | |
519 | return 0; | |
520 | return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); | |
521 | } | |
522 | EXPORT_SYMBOL(security_path_mknod); | |
523 | ||
524 | int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode) | |
525 | { | |
526 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) | |
527 | return 0; | |
528 | return call_int_hook(path_mkdir, 0, dir, dentry, mode); | |
529 | } | |
530 | EXPORT_SYMBOL(security_path_mkdir); | |
531 | ||
532 | int security_path_rmdir(const struct path *dir, struct dentry *dentry) | |
533 | { | |
534 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) | |
535 | return 0; | |
536 | return call_int_hook(path_rmdir, 0, dir, dentry); | |
537 | } | |
538 | ||
539 | int security_path_unlink(const struct path *dir, struct dentry *dentry) | |
540 | { | |
541 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) | |
542 | return 0; | |
543 | return call_int_hook(path_unlink, 0, dir, dentry); | |
544 | } | |
545 | EXPORT_SYMBOL(security_path_unlink); | |
546 | ||
547 | int security_path_symlink(const struct path *dir, struct dentry *dentry, | |
548 | const char *old_name) | |
549 | { | |
550 | if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) | |
551 | return 0; | |
552 | return call_int_hook(path_symlink, 0, dir, dentry, old_name); | |
553 | } | |
554 | ||
555 | int security_path_link(struct dentry *old_dentry, const struct path *new_dir, | |
556 | struct dentry *new_dentry) | |
557 | { | |
558 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) | |
559 | return 0; | |
560 | return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); | |
561 | } | |
562 | ||
563 | int security_path_rename(const struct path *old_dir, struct dentry *old_dentry, | |
564 | const struct path *new_dir, struct dentry *new_dentry, | |
565 | unsigned int flags) | |
566 | { | |
567 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || | |
568 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
569 | return 0; | |
570 | ||
571 | if (flags & RENAME_EXCHANGE) { | |
572 | int err = call_int_hook(path_rename, 0, new_dir, new_dentry, | |
573 | old_dir, old_dentry); | |
574 | if (err) | |
575 | return err; | |
576 | } | |
577 | ||
578 | return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, | |
579 | new_dentry); | |
580 | } | |
581 | EXPORT_SYMBOL(security_path_rename); | |
582 | ||
583 | int security_path_truncate(const struct path *path) | |
584 | { | |
585 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) | |
586 | return 0; | |
587 | return call_int_hook(path_truncate, 0, path); | |
588 | } | |
589 | ||
590 | int security_path_chmod(const struct path *path, umode_t mode) | |
591 | { | |
592 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) | |
593 | return 0; | |
594 | return call_int_hook(path_chmod, 0, path, mode); | |
595 | } | |
596 | ||
597 | int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid) | |
598 | { | |
599 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) | |
600 | return 0; | |
601 | return call_int_hook(path_chown, 0, path, uid, gid); | |
602 | } | |
603 | ||
604 | int security_path_chroot(const struct path *path) | |
605 | { | |
606 | return call_int_hook(path_chroot, 0, path); | |
607 | } | |
608 | #endif | |
609 | ||
610 | int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) | |
611 | { | |
612 | if (unlikely(IS_PRIVATE(dir))) | |
613 | return 0; | |
614 | return call_int_hook(inode_create, 0, dir, dentry, mode); | |
615 | } | |
616 | EXPORT_SYMBOL_GPL(security_inode_create); | |
617 | ||
618 | int security_inode_link(struct dentry *old_dentry, struct inode *dir, | |
619 | struct dentry *new_dentry) | |
620 | { | |
621 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) | |
622 | return 0; | |
623 | return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); | |
624 | } | |
625 | ||
626 | int security_inode_unlink(struct inode *dir, struct dentry *dentry) | |
627 | { | |
628 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) | |
629 | return 0; | |
630 | return call_int_hook(inode_unlink, 0, dir, dentry); | |
631 | } | |
632 | ||
633 | int security_inode_symlink(struct inode *dir, struct dentry *dentry, | |
634 | const char *old_name) | |
635 | { | |
636 | if (unlikely(IS_PRIVATE(dir))) | |
637 | return 0; | |
638 | return call_int_hook(inode_symlink, 0, dir, dentry, old_name); | |
639 | } | |
640 | ||
641 | int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) | |
642 | { | |
643 | if (unlikely(IS_PRIVATE(dir))) | |
644 | return 0; | |
645 | return call_int_hook(inode_mkdir, 0, dir, dentry, mode); | |
646 | } | |
647 | EXPORT_SYMBOL_GPL(security_inode_mkdir); | |
648 | ||
649 | int security_inode_rmdir(struct inode *dir, struct dentry *dentry) | |
650 | { | |
651 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) | |
652 | return 0; | |
653 | return call_int_hook(inode_rmdir, 0, dir, dentry); | |
654 | } | |
655 | ||
656 | int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) | |
657 | { | |
658 | if (unlikely(IS_PRIVATE(dir))) | |
659 | return 0; | |
660 | return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); | |
661 | } | |
662 | ||
663 | int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, | |
664 | struct inode *new_dir, struct dentry *new_dentry, | |
665 | unsigned int flags) | |
666 | { | |
667 | if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || | |
668 | (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) | |
669 | return 0; | |
670 | ||
671 | if (flags & RENAME_EXCHANGE) { | |
672 | int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, | |
673 | old_dir, old_dentry); | |
674 | if (err) | |
675 | return err; | |
676 | } | |
677 | ||
678 | return call_int_hook(inode_rename, 0, old_dir, old_dentry, | |
679 | new_dir, new_dentry); | |
680 | } | |
681 | ||
682 | int security_inode_readlink(struct dentry *dentry) | |
683 | { | |
684 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) | |
685 | return 0; | |
686 | return call_int_hook(inode_readlink, 0, dentry); | |
687 | } | |
688 | ||
689 | int security_inode_follow_link(struct dentry *dentry, struct inode *inode, | |
690 | bool rcu) | |
691 | { | |
692 | if (unlikely(IS_PRIVATE(inode))) | |
693 | return 0; | |
694 | return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); | |
695 | } | |
696 | ||
697 | int security_inode_permission(struct inode *inode, int mask) | |
698 | { | |
699 | if (unlikely(IS_PRIVATE(inode))) | |
700 | return 0; | |
701 | return call_int_hook(inode_permission, 0, inode, mask); | |
702 | } | |
703 | ||
704 | int security_inode_setattr(struct dentry *dentry, struct iattr *attr) | |
705 | { | |
706 | int ret; | |
707 | ||
708 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) | |
709 | return 0; | |
710 | ret = call_int_hook(inode_setattr, 0, dentry, attr); | |
711 | if (ret) | |
712 | return ret; | |
713 | return evm_inode_setattr(dentry, attr); | |
714 | } | |
715 | EXPORT_SYMBOL_GPL(security_inode_setattr); | |
716 | ||
717 | int security_inode_getattr(const struct path *path) | |
718 | { | |
719 | if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) | |
720 | return 0; | |
721 | return call_int_hook(inode_getattr, 0, path); | |
722 | } | |
723 | ||
724 | int security_inode_setxattr(struct dentry *dentry, const char *name, | |
725 | const void *value, size_t size, int flags) | |
726 | { | |
727 | int ret; | |
728 | ||
729 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) | |
730 | return 0; | |
731 | /* | |
732 | * SELinux and Smack integrate the cap call, | |
733 | * so assume that all LSMs supplying this call do so. | |
734 | */ | |
735 | ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, | |
736 | flags); | |
737 | ||
738 | if (ret == 1) | |
739 | ret = cap_inode_setxattr(dentry, name, value, size, flags); | |
740 | if (ret) | |
741 | return ret; | |
742 | ret = ima_inode_setxattr(dentry, name, value, size); | |
743 | if (ret) | |
744 | return ret; | |
745 | return evm_inode_setxattr(dentry, name, value, size); | |
746 | } | |
747 | ||
748 | void security_inode_post_setxattr(struct dentry *dentry, const char *name, | |
749 | const void *value, size_t size, int flags) | |
750 | { | |
751 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) | |
752 | return; | |
753 | call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); | |
754 | evm_inode_post_setxattr(dentry, name, value, size); | |
755 | } | |
756 | ||
757 | int security_inode_getxattr(struct dentry *dentry, const char *name) | |
758 | { | |
759 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) | |
760 | return 0; | |
761 | return call_int_hook(inode_getxattr, 0, dentry, name); | |
762 | } | |
763 | ||
764 | int security_inode_listxattr(struct dentry *dentry) | |
765 | { | |
766 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) | |
767 | return 0; | |
768 | return call_int_hook(inode_listxattr, 0, dentry); | |
769 | } | |
770 | ||
771 | int security_inode_removexattr(struct dentry *dentry, const char *name) | |
772 | { | |
773 | int ret; | |
774 | ||
775 | if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) | |
776 | return 0; | |
777 | /* | |
778 | * SELinux and Smack integrate the cap call, | |
779 | * so assume that all LSMs supplying this call do so. | |
780 | */ | |
781 | ret = call_int_hook(inode_removexattr, 1, dentry, name); | |
782 | if (ret == 1) | |
783 | ret = cap_inode_removexattr(dentry, name); | |
784 | if (ret) | |
785 | return ret; | |
786 | ret = ima_inode_removexattr(dentry, name); | |
787 | if (ret) | |
788 | return ret; | |
789 | return evm_inode_removexattr(dentry, name); | |
790 | } | |
791 | ||
792 | int security_inode_need_killpriv(struct dentry *dentry) | |
793 | { | |
794 | return call_int_hook(inode_need_killpriv, 0, dentry); | |
795 | } | |
796 | ||
797 | int security_inode_killpriv(struct dentry *dentry) | |
798 | { | |
799 | return call_int_hook(inode_killpriv, 0, dentry); | |
800 | } | |
801 | ||
802 | int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc) | |
803 | { | |
804 | struct security_hook_list *hp; | |
805 | int rc; | |
806 | ||
807 | if (unlikely(IS_PRIVATE(inode))) | |
808 | return -EOPNOTSUPP; | |
809 | /* | |
810 | * Only one module will provide an attribute with a given name. | |
811 | */ | |
812 | list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) { | |
813 | rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc); | |
814 | if (rc != -EOPNOTSUPP) | |
815 | return rc; | |
816 | } | |
817 | return -EOPNOTSUPP; | |
818 | } | |
819 | ||
820 | int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) | |
821 | { | |
822 | struct security_hook_list *hp; | |
823 | int rc; | |
824 | ||
825 | if (unlikely(IS_PRIVATE(inode))) | |
826 | return -EOPNOTSUPP; | |
827 | /* | |
828 | * Only one module will provide an attribute with a given name. | |
829 | */ | |
830 | list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) { | |
831 | rc = hp->hook.inode_setsecurity(inode, name, value, size, | |
832 | flags); | |
833 | if (rc != -EOPNOTSUPP) | |
834 | return rc; | |
835 | } | |
836 | return -EOPNOTSUPP; | |
837 | } | |
838 | ||
839 | int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) | |
840 | { | |
841 | if (unlikely(IS_PRIVATE(inode))) | |
842 | return 0; | |
843 | return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); | |
844 | } | |
845 | EXPORT_SYMBOL(security_inode_listsecurity); | |
846 | ||
847 | void security_inode_getsecid(struct inode *inode, u32 *secid) | |
848 | { | |
849 | call_void_hook(inode_getsecid, inode, secid); | |
850 | } | |
851 | ||
852 | int security_inode_copy_up(struct dentry *src, struct cred **new) | |
853 | { | |
854 | return call_int_hook(inode_copy_up, 0, src, new); | |
855 | } | |
856 | EXPORT_SYMBOL(security_inode_copy_up); | |
857 | ||
858 | int security_inode_copy_up_xattr(const char *name) | |
859 | { | |
860 | return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name); | |
861 | } | |
862 | EXPORT_SYMBOL(security_inode_copy_up_xattr); | |
863 | ||
864 | int security_file_permission(struct file *file, int mask) | |
865 | { | |
866 | int ret; | |
867 | ||
868 | ret = call_int_hook(file_permission, 0, file, mask); | |
869 | if (ret) | |
870 | return ret; | |
871 | ||
872 | return fsnotify_perm(file, mask); | |
873 | } | |
874 | ||
875 | int security_file_alloc(struct file *file) | |
876 | { | |
877 | return call_int_hook(file_alloc_security, 0, file); | |
878 | } | |
879 | ||
880 | void security_file_free(struct file *file) | |
881 | { | |
882 | call_void_hook(file_free_security, file); | |
883 | } | |
884 | ||
885 | int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) | |
886 | { | |
887 | return call_int_hook(file_ioctl, 0, file, cmd, arg); | |
888 | } | |
889 | ||
890 | static inline unsigned long mmap_prot(struct file *file, unsigned long prot) | |
891 | { | |
892 | /* | |
893 | * Does we have PROT_READ and does the application expect | |
894 | * it to imply PROT_EXEC? If not, nothing to talk about... | |
895 | */ | |
896 | if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) | |
897 | return prot; | |
898 | if (!(current->personality & READ_IMPLIES_EXEC)) | |
899 | return prot; | |
900 | /* | |
901 | * if that's an anonymous mapping, let it. | |
902 | */ | |
903 | if (!file) | |
904 | return prot | PROT_EXEC; | |
905 | /* | |
906 | * ditto if it's not on noexec mount, except that on !MMU we need | |
907 | * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case | |
908 | */ | |
909 | if (!path_noexec(&file->f_path)) { | |
910 | #ifndef CONFIG_MMU | |
911 | if (file->f_op->mmap_capabilities) { | |
912 | unsigned caps = file->f_op->mmap_capabilities(file); | |
913 | if (!(caps & NOMMU_MAP_EXEC)) | |
914 | return prot; | |
915 | } | |
916 | #endif | |
917 | return prot | PROT_EXEC; | |
918 | } | |
919 | /* anything on noexec mount won't get PROT_EXEC */ | |
920 | return prot; | |
921 | } | |
922 | ||
923 | int security_mmap_file(struct file *file, unsigned long prot, | |
924 | unsigned long flags) | |
925 | { | |
926 | int ret; | |
927 | ret = call_int_hook(mmap_file, 0, file, prot, | |
928 | mmap_prot(file, prot), flags); | |
929 | if (ret) | |
930 | return ret; | |
931 | return ima_file_mmap(file, prot); | |
932 | } | |
933 | ||
934 | int security_mmap_addr(unsigned long addr) | |
935 | { | |
936 | return call_int_hook(mmap_addr, 0, addr); | |
937 | } | |
938 | ||
939 | int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, | |
940 | unsigned long prot) | |
941 | { | |
942 | return call_int_hook(file_mprotect, 0, vma, reqprot, prot); | |
943 | } | |
944 | ||
945 | int security_file_lock(struct file *file, unsigned int cmd) | |
946 | { | |
947 | return call_int_hook(file_lock, 0, file, cmd); | |
948 | } | |
949 | ||
950 | int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) | |
951 | { | |
952 | return call_int_hook(file_fcntl, 0, file, cmd, arg); | |
953 | } | |
954 | ||
955 | void security_file_set_fowner(struct file *file) | |
956 | { | |
957 | call_void_hook(file_set_fowner, file); | |
958 | } | |
959 | ||
960 | int security_file_send_sigiotask(struct task_struct *tsk, | |
961 | struct fown_struct *fown, int sig) | |
962 | { | |
963 | return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); | |
964 | } | |
965 | ||
966 | int security_file_receive(struct file *file) | |
967 | { | |
968 | return call_int_hook(file_receive, 0, file); | |
969 | } | |
970 | ||
971 | int security_file_open(struct file *file, const struct cred *cred) | |
972 | { | |
973 | int ret; | |
974 | ||
975 | ret = call_int_hook(file_open, 0, file, cred); | |
976 | if (ret) | |
977 | return ret; | |
978 | ||
979 | return fsnotify_perm(file, MAY_OPEN); | |
980 | } | |
981 | ||
982 | int security_task_create(unsigned long clone_flags) | |
983 | { | |
984 | return call_int_hook(task_create, 0, clone_flags); | |
985 | } | |
986 | ||
987 | int security_task_alloc(struct task_struct *task, unsigned long clone_flags) | |
988 | { | |
989 | return call_int_hook(task_alloc, 0, task, clone_flags); | |
990 | } | |
991 | ||
992 | void security_task_free(struct task_struct *task) | |
993 | { | |
994 | call_void_hook(task_free, task); | |
995 | } | |
996 | ||
997 | int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) | |
998 | { | |
999 | return call_int_hook(cred_alloc_blank, 0, cred, gfp); | |
1000 | } | |
1001 | ||
1002 | void security_cred_free(struct cred *cred) | |
1003 | { | |
1004 | call_void_hook(cred_free, cred); | |
1005 | } | |
1006 | ||
1007 | int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) | |
1008 | { | |
1009 | return call_int_hook(cred_prepare, 0, new, old, gfp); | |
1010 | } | |
1011 | ||
1012 | void security_transfer_creds(struct cred *new, const struct cred *old) | |
1013 | { | |
1014 | call_void_hook(cred_transfer, new, old); | |
1015 | } | |
1016 | ||
1017 | int security_kernel_act_as(struct cred *new, u32 secid) | |
1018 | { | |
1019 | return call_int_hook(kernel_act_as, 0, new, secid); | |
1020 | } | |
1021 | ||
1022 | int security_kernel_create_files_as(struct cred *new, struct inode *inode) | |
1023 | { | |
1024 | return call_int_hook(kernel_create_files_as, 0, new, inode); | |
1025 | } | |
1026 | ||
1027 | int security_kernel_module_request(char *kmod_name) | |
1028 | { | |
1029 | return call_int_hook(kernel_module_request, 0, kmod_name); | |
1030 | } | |
1031 | ||
1032 | int security_kernel_read_file(struct file *file, enum kernel_read_file_id id) | |
1033 | { | |
1034 | int ret; | |
1035 | ||
1036 | ret = call_int_hook(kernel_read_file, 0, file, id); | |
1037 | if (ret) | |
1038 | return ret; | |
1039 | return ima_read_file(file, id); | |
1040 | } | |
1041 | EXPORT_SYMBOL_GPL(security_kernel_read_file); | |
1042 | ||
1043 | int security_kernel_post_read_file(struct file *file, char *buf, loff_t size, | |
1044 | enum kernel_read_file_id id) | |
1045 | { | |
1046 | int ret; | |
1047 | ||
1048 | ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id); | |
1049 | if (ret) | |
1050 | return ret; | |
1051 | return ima_post_read_file(file, buf, size, id); | |
1052 | } | |
1053 | EXPORT_SYMBOL_GPL(security_kernel_post_read_file); | |
1054 | ||
1055 | int security_task_fix_setuid(struct cred *new, const struct cred *old, | |
1056 | int flags) | |
1057 | { | |
1058 | return call_int_hook(task_fix_setuid, 0, new, old, flags); | |
1059 | } | |
1060 | ||
1061 | int security_task_setpgid(struct task_struct *p, pid_t pgid) | |
1062 | { | |
1063 | return call_int_hook(task_setpgid, 0, p, pgid); | |
1064 | } | |
1065 | ||
1066 | int security_task_getpgid(struct task_struct *p) | |
1067 | { | |
1068 | return call_int_hook(task_getpgid, 0, p); | |
1069 | } | |
1070 | ||
1071 | int security_task_getsid(struct task_struct *p) | |
1072 | { | |
1073 | return call_int_hook(task_getsid, 0, p); | |
1074 | } | |
1075 | ||
1076 | void security_task_getsecid(struct task_struct *p, u32 *secid) | |
1077 | { | |
1078 | *secid = 0; | |
1079 | call_void_hook(task_getsecid, p, secid); | |
1080 | } | |
1081 | EXPORT_SYMBOL(security_task_getsecid); | |
1082 | ||
1083 | int security_task_setnice(struct task_struct *p, int nice) | |
1084 | { | |
1085 | return call_int_hook(task_setnice, 0, p, nice); | |
1086 | } | |
1087 | ||
1088 | int security_task_setioprio(struct task_struct *p, int ioprio) | |
1089 | { | |
1090 | return call_int_hook(task_setioprio, 0, p, ioprio); | |
1091 | } | |
1092 | ||
1093 | int security_task_getioprio(struct task_struct *p) | |
1094 | { | |
1095 | return call_int_hook(task_getioprio, 0, p); | |
1096 | } | |
1097 | ||
1098 | int security_task_prlimit(const struct cred *cred, const struct cred *tcred, | |
1099 | unsigned int flags) | |
1100 | { | |
1101 | return call_int_hook(task_prlimit, 0, cred, tcred, flags); | |
1102 | } | |
1103 | ||
1104 | int security_task_setrlimit(struct task_struct *p, unsigned int resource, | |
1105 | struct rlimit *new_rlim) | |
1106 | { | |
1107 | return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); | |
1108 | } | |
1109 | ||
1110 | int security_task_setscheduler(struct task_struct *p) | |
1111 | { | |
1112 | return call_int_hook(task_setscheduler, 0, p); | |
1113 | } | |
1114 | ||
1115 | int security_task_getscheduler(struct task_struct *p) | |
1116 | { | |
1117 | return call_int_hook(task_getscheduler, 0, p); | |
1118 | } | |
1119 | ||
1120 | int security_task_movememory(struct task_struct *p) | |
1121 | { | |
1122 | return call_int_hook(task_movememory, 0, p); | |
1123 | } | |
1124 | ||
1125 | int security_task_kill(struct task_struct *p, struct siginfo *info, | |
1126 | int sig, u32 secid) | |
1127 | { | |
1128 | return call_int_hook(task_kill, 0, p, info, sig, secid); | |
1129 | } | |
1130 | ||
1131 | int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, | |
1132 | unsigned long arg4, unsigned long arg5) | |
1133 | { | |
1134 | int thisrc; | |
1135 | int rc = -ENOSYS; | |
1136 | struct security_hook_list *hp; | |
1137 | ||
1138 | list_for_each_entry(hp, &security_hook_heads.task_prctl, list) { | |
1139 | thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); | |
1140 | if (thisrc != -ENOSYS) { | |
1141 | rc = thisrc; | |
1142 | if (thisrc != 0) | |
1143 | break; | |
1144 | } | |
1145 | } | |
1146 | return rc; | |
1147 | } | |
1148 | ||
1149 | void security_task_to_inode(struct task_struct *p, struct inode *inode) | |
1150 | { | |
1151 | call_void_hook(task_to_inode, p, inode); | |
1152 | } | |
1153 | ||
1154 | int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) | |
1155 | { | |
1156 | return call_int_hook(ipc_permission, 0, ipcp, flag); | |
1157 | } | |
1158 | ||
1159 | void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) | |
1160 | { | |
1161 | *secid = 0; | |
1162 | call_void_hook(ipc_getsecid, ipcp, secid); | |
1163 | } | |
1164 | ||
1165 | int security_msg_msg_alloc(struct msg_msg *msg) | |
1166 | { | |
1167 | return call_int_hook(msg_msg_alloc_security, 0, msg); | |
1168 | } | |
1169 | ||
1170 | void security_msg_msg_free(struct msg_msg *msg) | |
1171 | { | |
1172 | call_void_hook(msg_msg_free_security, msg); | |
1173 | } | |
1174 | ||
1175 | int security_msg_queue_alloc(struct msg_queue *msq) | |
1176 | { | |
1177 | return call_int_hook(msg_queue_alloc_security, 0, msq); | |
1178 | } | |
1179 | ||
1180 | void security_msg_queue_free(struct msg_queue *msq) | |
1181 | { | |
1182 | call_void_hook(msg_queue_free_security, msq); | |
1183 | } | |
1184 | ||
1185 | int security_msg_queue_associate(struct msg_queue *msq, int msqflg) | |
1186 | { | |
1187 | return call_int_hook(msg_queue_associate, 0, msq, msqflg); | |
1188 | } | |
1189 | ||
1190 | int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) | |
1191 | { | |
1192 | return call_int_hook(msg_queue_msgctl, 0, msq, cmd); | |
1193 | } | |
1194 | ||
1195 | int security_msg_queue_msgsnd(struct msg_queue *msq, | |
1196 | struct msg_msg *msg, int msqflg) | |
1197 | { | |
1198 | return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); | |
1199 | } | |
1200 | ||
1201 | int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, | |
1202 | struct task_struct *target, long type, int mode) | |
1203 | { | |
1204 | return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); | |
1205 | } | |
1206 | ||
1207 | int security_shm_alloc(struct shmid_kernel *shp) | |
1208 | { | |
1209 | return call_int_hook(shm_alloc_security, 0, shp); | |
1210 | } | |
1211 | ||
1212 | void security_shm_free(struct shmid_kernel *shp) | |
1213 | { | |
1214 | call_void_hook(shm_free_security, shp); | |
1215 | } | |
1216 | ||
1217 | int security_shm_associate(struct shmid_kernel *shp, int shmflg) | |
1218 | { | |
1219 | return call_int_hook(shm_associate, 0, shp, shmflg); | |
1220 | } | |
1221 | ||
1222 | int security_shm_shmctl(struct shmid_kernel *shp, int cmd) | |
1223 | { | |
1224 | return call_int_hook(shm_shmctl, 0, shp, cmd); | |
1225 | } | |
1226 | ||
1227 | int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) | |
1228 | { | |
1229 | return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); | |
1230 | } | |
1231 | ||
1232 | int security_sem_alloc(struct sem_array *sma) | |
1233 | { | |
1234 | return call_int_hook(sem_alloc_security, 0, sma); | |
1235 | } | |
1236 | ||
1237 | void security_sem_free(struct sem_array *sma) | |
1238 | { | |
1239 | call_void_hook(sem_free_security, sma); | |
1240 | } | |
1241 | ||
1242 | int security_sem_associate(struct sem_array *sma, int semflg) | |
1243 | { | |
1244 | return call_int_hook(sem_associate, 0, sma, semflg); | |
1245 | } | |
1246 | ||
1247 | int security_sem_semctl(struct sem_array *sma, int cmd) | |
1248 | { | |
1249 | return call_int_hook(sem_semctl, 0, sma, cmd); | |
1250 | } | |
1251 | ||
1252 | int security_sem_semop(struct sem_array *sma, struct sembuf *sops, | |
1253 | unsigned nsops, int alter) | |
1254 | { | |
1255 | return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); | |
1256 | } | |
1257 | ||
1258 | void security_d_instantiate(struct dentry *dentry, struct inode *inode) | |
1259 | { | |
1260 | if (unlikely(inode && IS_PRIVATE(inode))) | |
1261 | return; | |
1262 | call_void_hook(d_instantiate, dentry, inode); | |
1263 | } | |
1264 | EXPORT_SYMBOL(security_d_instantiate); | |
1265 | ||
1266 | int security_getprocattr(struct task_struct *p, char *name, char **value) | |
1267 | { | |
1268 | return call_int_hook(getprocattr, -EINVAL, p, name, value); | |
1269 | } | |
1270 | ||
1271 | int security_setprocattr(const char *name, void *value, size_t size) | |
1272 | { | |
1273 | return call_int_hook(setprocattr, -EINVAL, name, value, size); | |
1274 | } | |
1275 | ||
1276 | int security_netlink_send(struct sock *sk, struct sk_buff *skb) | |
1277 | { | |
1278 | return call_int_hook(netlink_send, 0, sk, skb); | |
1279 | } | |
1280 | ||
1281 | int security_ismaclabel(const char *name) | |
1282 | { | |
1283 | return call_int_hook(ismaclabel, 0, name); | |
1284 | } | |
1285 | EXPORT_SYMBOL(security_ismaclabel); | |
1286 | ||
1287 | int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) | |
1288 | { | |
1289 | return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata, | |
1290 | seclen); | |
1291 | } | |
1292 | EXPORT_SYMBOL(security_secid_to_secctx); | |
1293 | ||
1294 | int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) | |
1295 | { | |
1296 | *secid = 0; | |
1297 | return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); | |
1298 | } | |
1299 | EXPORT_SYMBOL(security_secctx_to_secid); | |
1300 | ||
1301 | void security_release_secctx(char *secdata, u32 seclen) | |
1302 | { | |
1303 | call_void_hook(release_secctx, secdata, seclen); | |
1304 | } | |
1305 | EXPORT_SYMBOL(security_release_secctx); | |
1306 | ||
1307 | void security_inode_invalidate_secctx(struct inode *inode) | |
1308 | { | |
1309 | call_void_hook(inode_invalidate_secctx, inode); | |
1310 | } | |
1311 | EXPORT_SYMBOL(security_inode_invalidate_secctx); | |
1312 | ||
1313 | int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) | |
1314 | { | |
1315 | return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); | |
1316 | } | |
1317 | EXPORT_SYMBOL(security_inode_notifysecctx); | |
1318 | ||
1319 | int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) | |
1320 | { | |
1321 | return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); | |
1322 | } | |
1323 | EXPORT_SYMBOL(security_inode_setsecctx); | |
1324 | ||
1325 | int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) | |
1326 | { | |
1327 | return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); | |
1328 | } | |
1329 | EXPORT_SYMBOL(security_inode_getsecctx); | |
1330 | ||
1331 | #ifdef CONFIG_SECURITY_NETWORK | |
1332 | ||
1333 | int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) | |
1334 | { | |
1335 | return call_int_hook(unix_stream_connect, 0, sock, other, newsk); | |
1336 | } | |
1337 | EXPORT_SYMBOL(security_unix_stream_connect); | |
1338 | ||
1339 | int security_unix_may_send(struct socket *sock, struct socket *other) | |
1340 | { | |
1341 | return call_int_hook(unix_may_send, 0, sock, other); | |
1342 | } | |
1343 | EXPORT_SYMBOL(security_unix_may_send); | |
1344 | ||
1345 | int security_socket_create(int family, int type, int protocol, int kern) | |
1346 | { | |
1347 | return call_int_hook(socket_create, 0, family, type, protocol, kern); | |
1348 | } | |
1349 | ||
1350 | int security_socket_post_create(struct socket *sock, int family, | |
1351 | int type, int protocol, int kern) | |
1352 | { | |
1353 | return call_int_hook(socket_post_create, 0, sock, family, type, | |
1354 | protocol, kern); | |
1355 | } | |
1356 | ||
1357 | int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) | |
1358 | { | |
1359 | return call_int_hook(socket_bind, 0, sock, address, addrlen); | |
1360 | } | |
1361 | ||
1362 | int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) | |
1363 | { | |
1364 | return call_int_hook(socket_connect, 0, sock, address, addrlen); | |
1365 | } | |
1366 | ||
1367 | int security_socket_listen(struct socket *sock, int backlog) | |
1368 | { | |
1369 | return call_int_hook(socket_listen, 0, sock, backlog); | |
1370 | } | |
1371 | ||
1372 | int security_socket_accept(struct socket *sock, struct socket *newsock) | |
1373 | { | |
1374 | return call_int_hook(socket_accept, 0, sock, newsock); | |
1375 | } | |
1376 | ||
1377 | int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) | |
1378 | { | |
1379 | return call_int_hook(socket_sendmsg, 0, sock, msg, size); | |
1380 | } | |
1381 | ||
1382 | int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, | |
1383 | int size, int flags) | |
1384 | { | |
1385 | return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); | |
1386 | } | |
1387 | ||
1388 | int security_socket_getsockname(struct socket *sock) | |
1389 | { | |
1390 | return call_int_hook(socket_getsockname, 0, sock); | |
1391 | } | |
1392 | ||
1393 | int security_socket_getpeername(struct socket *sock) | |
1394 | { | |
1395 | return call_int_hook(socket_getpeername, 0, sock); | |
1396 | } | |
1397 | ||
1398 | int security_socket_getsockopt(struct socket *sock, int level, int optname) | |
1399 | { | |
1400 | return call_int_hook(socket_getsockopt, 0, sock, level, optname); | |
1401 | } | |
1402 | ||
1403 | int security_socket_setsockopt(struct socket *sock, int level, int optname) | |
1404 | { | |
1405 | return call_int_hook(socket_setsockopt, 0, sock, level, optname); | |
1406 | } | |
1407 | ||
1408 | int security_socket_shutdown(struct socket *sock, int how) | |
1409 | { | |
1410 | return call_int_hook(socket_shutdown, 0, sock, how); | |
1411 | } | |
1412 | ||
1413 | int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) | |
1414 | { | |
1415 | return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); | |
1416 | } | |
1417 | EXPORT_SYMBOL(security_sock_rcv_skb); | |
1418 | ||
1419 | int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, | |
1420 | int __user *optlen, unsigned len) | |
1421 | { | |
1422 | return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, | |
1423 | optval, optlen, len); | |
1424 | } | |
1425 | ||
1426 | int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) | |
1427 | { | |
1428 | return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, | |
1429 | skb, secid); | |
1430 | } | |
1431 | EXPORT_SYMBOL(security_socket_getpeersec_dgram); | |
1432 | ||
1433 | int security_sk_alloc(struct sock *sk, int family, gfp_t priority) | |
1434 | { | |
1435 | return call_int_hook(sk_alloc_security, 0, sk, family, priority); | |
1436 | } | |
1437 | ||
1438 | void security_sk_free(struct sock *sk) | |
1439 | { | |
1440 | call_void_hook(sk_free_security, sk); | |
1441 | } | |
1442 | ||
1443 | void security_sk_clone(const struct sock *sk, struct sock *newsk) | |
1444 | { | |
1445 | call_void_hook(sk_clone_security, sk, newsk); | |
1446 | } | |
1447 | EXPORT_SYMBOL(security_sk_clone); | |
1448 | ||
1449 | void security_sk_classify_flow(struct sock *sk, struct flowi *fl) | |
1450 | { | |
1451 | call_void_hook(sk_getsecid, sk, &fl->flowi_secid); | |
1452 | } | |
1453 | EXPORT_SYMBOL(security_sk_classify_flow); | |
1454 | ||
1455 | void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) | |
1456 | { | |
1457 | call_void_hook(req_classify_flow, req, fl); | |
1458 | } | |
1459 | EXPORT_SYMBOL(security_req_classify_flow); | |
1460 | ||
1461 | void security_sock_graft(struct sock *sk, struct socket *parent) | |
1462 | { | |
1463 | call_void_hook(sock_graft, sk, parent); | |
1464 | } | |
1465 | EXPORT_SYMBOL(security_sock_graft); | |
1466 | ||
1467 | int security_inet_conn_request(struct sock *sk, | |
1468 | struct sk_buff *skb, struct request_sock *req) | |
1469 | { | |
1470 | return call_int_hook(inet_conn_request, 0, sk, skb, req); | |
1471 | } | |
1472 | EXPORT_SYMBOL(security_inet_conn_request); | |
1473 | ||
1474 | void security_inet_csk_clone(struct sock *newsk, | |
1475 | const struct request_sock *req) | |
1476 | { | |
1477 | call_void_hook(inet_csk_clone, newsk, req); | |
1478 | } | |
1479 | ||
1480 | void security_inet_conn_established(struct sock *sk, | |
1481 | struct sk_buff *skb) | |
1482 | { | |
1483 | call_void_hook(inet_conn_established, sk, skb); | |
1484 | } | |
1485 | ||
1486 | int security_secmark_relabel_packet(u32 secid) | |
1487 | { | |
1488 | return call_int_hook(secmark_relabel_packet, 0, secid); | |
1489 | } | |
1490 | EXPORT_SYMBOL(security_secmark_relabel_packet); | |
1491 | ||
1492 | void security_secmark_refcount_inc(void) | |
1493 | { | |
1494 | call_void_hook(secmark_refcount_inc); | |
1495 | } | |
1496 | EXPORT_SYMBOL(security_secmark_refcount_inc); | |
1497 | ||
1498 | void security_secmark_refcount_dec(void) | |
1499 | { | |
1500 | call_void_hook(secmark_refcount_dec); | |
1501 | } | |
1502 | EXPORT_SYMBOL(security_secmark_refcount_dec); | |
1503 | ||
1504 | int security_tun_dev_alloc_security(void **security) | |
1505 | { | |
1506 | return call_int_hook(tun_dev_alloc_security, 0, security); | |
1507 | } | |
1508 | EXPORT_SYMBOL(security_tun_dev_alloc_security); | |
1509 | ||
1510 | void security_tun_dev_free_security(void *security) | |
1511 | { | |
1512 | call_void_hook(tun_dev_free_security, security); | |
1513 | } | |
1514 | EXPORT_SYMBOL(security_tun_dev_free_security); | |
1515 | ||
1516 | int security_tun_dev_create(void) | |
1517 | { | |
1518 | return call_int_hook(tun_dev_create, 0); | |
1519 | } | |
1520 | EXPORT_SYMBOL(security_tun_dev_create); | |
1521 | ||
1522 | int security_tun_dev_attach_queue(void *security) | |
1523 | { | |
1524 | return call_int_hook(tun_dev_attach_queue, 0, security); | |
1525 | } | |
1526 | EXPORT_SYMBOL(security_tun_dev_attach_queue); | |
1527 | ||
1528 | int security_tun_dev_attach(struct sock *sk, void *security) | |
1529 | { | |
1530 | return call_int_hook(tun_dev_attach, 0, sk, security); | |
1531 | } | |
1532 | EXPORT_SYMBOL(security_tun_dev_attach); | |
1533 | ||
1534 | int security_tun_dev_open(void *security) | |
1535 | { | |
1536 | return call_int_hook(tun_dev_open, 0, security); | |
1537 | } | |
1538 | EXPORT_SYMBOL(security_tun_dev_open); | |
1539 | ||
1540 | #endif /* CONFIG_SECURITY_NETWORK */ | |
1541 | ||
1542 | #ifdef CONFIG_SECURITY_INFINIBAND | |
1543 | ||
1544 | int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey) | |
1545 | { | |
1546 | return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey); | |
1547 | } | |
1548 | EXPORT_SYMBOL(security_ib_pkey_access); | |
1549 | ||
1550 | int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num) | |
1551 | { | |
1552 | return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num); | |
1553 | } | |
1554 | EXPORT_SYMBOL(security_ib_endport_manage_subnet); | |
1555 | ||
1556 | int security_ib_alloc_security(void **sec) | |
1557 | { | |
1558 | return call_int_hook(ib_alloc_security, 0, sec); | |
1559 | } | |
1560 | EXPORT_SYMBOL(security_ib_alloc_security); | |
1561 | ||
1562 | void security_ib_free_security(void *sec) | |
1563 | { | |
1564 | call_void_hook(ib_free_security, sec); | |
1565 | } | |
1566 | EXPORT_SYMBOL(security_ib_free_security); | |
1567 | #endif /* CONFIG_SECURITY_INFINIBAND */ | |
1568 | ||
1569 | #ifdef CONFIG_SECURITY_NETWORK_XFRM | |
1570 | ||
1571 | int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, | |
1572 | struct xfrm_user_sec_ctx *sec_ctx, | |
1573 | gfp_t gfp) | |
1574 | { | |
1575 | return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); | |
1576 | } | |
1577 | EXPORT_SYMBOL(security_xfrm_policy_alloc); | |
1578 | ||
1579 | int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, | |
1580 | struct xfrm_sec_ctx **new_ctxp) | |
1581 | { | |
1582 | return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); | |
1583 | } | |
1584 | ||
1585 | void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) | |
1586 | { | |
1587 | call_void_hook(xfrm_policy_free_security, ctx); | |
1588 | } | |
1589 | EXPORT_SYMBOL(security_xfrm_policy_free); | |
1590 | ||
1591 | int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) | |
1592 | { | |
1593 | return call_int_hook(xfrm_policy_delete_security, 0, ctx); | |
1594 | } | |
1595 | ||
1596 | int security_xfrm_state_alloc(struct xfrm_state *x, | |
1597 | struct xfrm_user_sec_ctx *sec_ctx) | |
1598 | { | |
1599 | return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); | |
1600 | } | |
1601 | EXPORT_SYMBOL(security_xfrm_state_alloc); | |
1602 | ||
1603 | int security_xfrm_state_alloc_acquire(struct xfrm_state *x, | |
1604 | struct xfrm_sec_ctx *polsec, u32 secid) | |
1605 | { | |
1606 | return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); | |
1607 | } | |
1608 | ||
1609 | int security_xfrm_state_delete(struct xfrm_state *x) | |
1610 | { | |
1611 | return call_int_hook(xfrm_state_delete_security, 0, x); | |
1612 | } | |
1613 | EXPORT_SYMBOL(security_xfrm_state_delete); | |
1614 | ||
1615 | void security_xfrm_state_free(struct xfrm_state *x) | |
1616 | { | |
1617 | call_void_hook(xfrm_state_free_security, x); | |
1618 | } | |
1619 | ||
1620 | int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) | |
1621 | { | |
1622 | return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); | |
1623 | } | |
1624 | ||
1625 | int security_xfrm_state_pol_flow_match(struct xfrm_state *x, | |
1626 | struct xfrm_policy *xp, | |
1627 | const struct flowi *fl) | |
1628 | { | |
1629 | struct security_hook_list *hp; | |
1630 | int rc = 1; | |
1631 | ||
1632 | /* | |
1633 | * Since this function is expected to return 0 or 1, the judgment | |
1634 | * becomes difficult if multiple LSMs supply this call. Fortunately, | |
1635 | * we can use the first LSM's judgment because currently only SELinux | |
1636 | * supplies this call. | |
1637 | * | |
1638 | * For speed optimization, we explicitly break the loop rather than | |
1639 | * using the macro | |
1640 | */ | |
1641 | list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, | |
1642 | list) { | |
1643 | rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl); | |
1644 | break; | |
1645 | } | |
1646 | return rc; | |
1647 | } | |
1648 | ||
1649 | int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) | |
1650 | { | |
1651 | return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); | |
1652 | } | |
1653 | ||
1654 | void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) | |
1655 | { | |
1656 | int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, | |
1657 | 0); | |
1658 | ||
1659 | BUG_ON(rc); | |
1660 | } | |
1661 | EXPORT_SYMBOL(security_skb_classify_flow); | |
1662 | ||
1663 | #endif /* CONFIG_SECURITY_NETWORK_XFRM */ | |
1664 | ||
1665 | #ifdef CONFIG_KEYS | |
1666 | ||
1667 | int security_key_alloc(struct key *key, const struct cred *cred, | |
1668 | unsigned long flags) | |
1669 | { | |
1670 | return call_int_hook(key_alloc, 0, key, cred, flags); | |
1671 | } | |
1672 | ||
1673 | void security_key_free(struct key *key) | |
1674 | { | |
1675 | call_void_hook(key_free, key); | |
1676 | } | |
1677 | ||
1678 | int security_key_permission(key_ref_t key_ref, | |
1679 | const struct cred *cred, unsigned perm) | |
1680 | { | |
1681 | return call_int_hook(key_permission, 0, key_ref, cred, perm); | |
1682 | } | |
1683 | ||
1684 | int security_key_getsecurity(struct key *key, char **_buffer) | |
1685 | { | |
1686 | *_buffer = NULL; | |
1687 | return call_int_hook(key_getsecurity, 0, key, _buffer); | |
1688 | } | |
1689 | ||
1690 | #endif /* CONFIG_KEYS */ | |
1691 | ||
1692 | #ifdef CONFIG_AUDIT | |
1693 | ||
1694 | int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) | |
1695 | { | |
1696 | return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); | |
1697 | } | |
1698 | ||
1699 | int security_audit_rule_known(struct audit_krule *krule) | |
1700 | { | |
1701 | return call_int_hook(audit_rule_known, 0, krule); | |
1702 | } | |
1703 | ||
1704 | void security_audit_rule_free(void *lsmrule) | |
1705 | { | |
1706 | call_void_hook(audit_rule_free, lsmrule); | |
1707 | } | |
1708 | ||
1709 | int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, | |
1710 | struct audit_context *actx) | |
1711 | { | |
1712 | return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule, | |
1713 | actx); | |
1714 | } | |
1715 | #endif /* CONFIG_AUDIT */ |