security.c 33 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314
  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. *
  8. * This program is free software; you can redistribute it and/or modify
  9. * it under the terms of the GNU General Public License as published by
  10. * the Free Software Foundation; either version 2 of the License, or
  11. * (at your option) any later version.
  12. */
  13. #include <linux/capability.h>
  14. #include <linux/module.h>
  15. #include <linux/init.h>
  16. #include <linux/kernel.h>
  17. #include <linux/security.h>
  18. #include <linux/ima.h>
  19. /* Boot-time LSM user choice */
  20. static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  21. CONFIG_DEFAULT_SECURITY;
  22. /* things that live in capability.c */
  23. extern void __init security_fixup_ops(struct security_operations *ops);
  24. static struct security_operations *security_ops;
  25. static struct security_operations default_security_ops = {
  26. .name = "default",
  27. };
  28. static inline int __init verify(struct security_operations *ops)
  29. {
  30. /* verify the security_operations structure exists */
  31. if (!ops)
  32. return -EINVAL;
  33. security_fixup_ops(ops);
  34. return 0;
  35. }
  36. static void __init do_security_initcalls(void)
  37. {
  38. initcall_t *call;
  39. call = __security_initcall_start;
  40. while (call < __security_initcall_end) {
  41. (*call) ();
  42. call++;
  43. }
  44. }
  45. /**
  46. * security_init - initializes the security framework
  47. *
  48. * This should be called early in the kernel initialization sequence.
  49. */
  50. int __init security_init(void)
  51. {
  52. printk(KERN_INFO "Security Framework initialized\n");
  53. security_fixup_ops(&default_security_ops);
  54. security_ops = &default_security_ops;
  55. do_security_initcalls();
  56. return 0;
  57. }
  58. void reset_security_ops(void)
  59. {
  60. security_ops = &default_security_ops;
  61. }
  62. /* Save user chosen LSM */
  63. static int __init choose_lsm(char *str)
  64. {
  65. strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  66. return 1;
  67. }
  68. __setup("security=", choose_lsm);
  69. /**
  70. * security_module_enable - Load given security module on boot ?
  71. * @ops: a pointer to the struct security_operations that is to be checked.
  72. *
  73. * Each LSM must pass this method before registering its own operations
  74. * to avoid security registration races. This method may also be used
  75. * to check if your LSM is currently loaded during kernel initialization.
  76. *
  77. * Return true if:
  78. * -The passed LSM is the one chosen by user at boot time,
  79. * -or the passed LSM is configured as the default and the user did not
  80. * choose an alternate LSM at boot time.
  81. * Otherwise, return false.
  82. */
  83. int __init security_module_enable(struct security_operations *ops)
  84. {
  85. return !strcmp(ops->name, chosen_lsm);
  86. }
  87. /**
  88. * register_security - registers a security framework with the kernel
  89. * @ops: a pointer to the struct security_options that is to be registered
  90. *
  91. * This function allows a security module to register itself with the
  92. * kernel security subsystem. Some rudimentary checking is done on the @ops
  93. * value passed to this function. You'll need to check first if your LSM
  94. * is allowed to register its @ops by calling security_module_enable(@ops).
  95. *
  96. * If there is already a security module registered with the kernel,
  97. * an error will be returned. Otherwise %0 is returned on success.
  98. */
  99. int __init register_security(struct security_operations *ops)
  100. {
  101. if (verify(ops)) {
  102. printk(KERN_DEBUG "%s could not verify "
  103. "security_operations structure.\n", __func__);
  104. return -EINVAL;
  105. }
  106. if (security_ops != &default_security_ops)
  107. return -EAGAIN;
  108. security_ops = ops;
  109. return 0;
  110. }
  111. /* Security operations */
  112. int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
  113. {
  114. return security_ops->ptrace_access_check(child, mode);
  115. }
  116. int security_ptrace_traceme(struct task_struct *parent)
  117. {
  118. return security_ops->ptrace_traceme(parent);
  119. }
  120. int security_capget(struct task_struct *target,
  121. kernel_cap_t *effective,
  122. kernel_cap_t *inheritable,
  123. kernel_cap_t *permitted)
  124. {
  125. return security_ops->capget(target, effective, inheritable, permitted);
  126. }
  127. int security_capset(struct cred *new, const struct cred *old,
  128. const kernel_cap_t *effective,
  129. const kernel_cap_t *inheritable,
  130. const kernel_cap_t *permitted)
  131. {
  132. return security_ops->capset(new, old,
  133. effective, inheritable, permitted);
  134. }
  135. int security_capable(struct user_namespace *ns, const struct cred *cred,
  136. int cap)
  137. {
  138. return security_ops->capable(current, cred, ns, cap,
  139. SECURITY_CAP_AUDIT);
  140. }
  141. int security_real_capable(struct task_struct *tsk, struct user_namespace *ns,
  142. int cap)
  143. {
  144. const struct cred *cred;
  145. int ret;
  146. cred = get_task_cred(tsk);
  147. ret = security_ops->capable(tsk, cred, ns, cap, SECURITY_CAP_AUDIT);
  148. put_cred(cred);
  149. return ret;
  150. }
  151. int security_real_capable_noaudit(struct task_struct *tsk,
  152. struct user_namespace *ns, int cap)
  153. {
  154. const struct cred *cred;
  155. int ret;
  156. cred = get_task_cred(tsk);
  157. ret = security_ops->capable(tsk, cred, ns, cap, SECURITY_CAP_NOAUDIT);
  158. put_cred(cred);
  159. return ret;
  160. }
  161. int security_quotactl(int cmds, int type, int id, struct super_block *sb)
  162. {
  163. return security_ops->quotactl(cmds, type, id, sb);
  164. }
  165. int security_quota_on(struct dentry *dentry)
  166. {
  167. return security_ops->quota_on(dentry);
  168. }
  169. int security_syslog(int type)
  170. {
  171. return security_ops->syslog(type);
  172. }
  173. int security_settime(const struct timespec *ts, const struct timezone *tz)
  174. {
  175. return security_ops->settime(ts, tz);
  176. }
  177. int security_vm_enough_memory(long pages)
  178. {
  179. WARN_ON(current->mm == NULL);
  180. return security_ops->vm_enough_memory(current->mm, pages);
  181. }
  182. int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
  183. {
  184. WARN_ON(mm == NULL);
  185. return security_ops->vm_enough_memory(mm, pages);
  186. }
  187. int security_vm_enough_memory_kern(long pages)
  188. {
  189. /* If current->mm is a kernel thread then we will pass NULL,
  190. for this specific case that is fine */
  191. return security_ops->vm_enough_memory(current->mm, pages);
  192. }
  193. int security_bprm_set_creds(struct linux_binprm *bprm)
  194. {
  195. return security_ops->bprm_set_creds(bprm);
  196. }
  197. int security_bprm_check(struct linux_binprm *bprm)
  198. {
  199. int ret;
  200. ret = security_ops->bprm_check_security(bprm);
  201. if (ret)
  202. return ret;
  203. return ima_bprm_check(bprm);
  204. }
  205. void security_bprm_committing_creds(struct linux_binprm *bprm)
  206. {
  207. security_ops->bprm_committing_creds(bprm);
  208. }
  209. void security_bprm_committed_creds(struct linux_binprm *bprm)
  210. {
  211. security_ops->bprm_committed_creds(bprm);
  212. }
  213. int security_bprm_secureexec(struct linux_binprm *bprm)
  214. {
  215. return security_ops->bprm_secureexec(bprm);
  216. }
  217. int security_sb_alloc(struct super_block *sb)
  218. {
  219. return security_ops->sb_alloc_security(sb);
  220. }
  221. void security_sb_free(struct super_block *sb)
  222. {
  223. security_ops->sb_free_security(sb);
  224. }
  225. int security_sb_copy_data(char *orig, char *copy)
  226. {
  227. return security_ops->sb_copy_data(orig, copy);
  228. }
  229. EXPORT_SYMBOL(security_sb_copy_data);
  230. int security_sb_remount(struct super_block *sb, void *data)
  231. {
  232. return security_ops->sb_remount(sb, data);
  233. }
  234. int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
  235. {
  236. return security_ops->sb_kern_mount(sb, flags, data);
  237. }
  238. int security_sb_show_options(struct seq_file *m, struct super_block *sb)
  239. {
  240. return security_ops->sb_show_options(m, sb);
  241. }
  242. int security_sb_statfs(struct dentry *dentry)
  243. {
  244. return security_ops->sb_statfs(dentry);
  245. }
  246. int security_sb_mount(char *dev_name, struct path *path,
  247. char *type, unsigned long flags, void *data)
  248. {
  249. return security_ops->sb_mount(dev_name, path, type, flags, data);
  250. }
  251. int security_sb_umount(struct vfsmount *mnt, int flags)
  252. {
  253. return security_ops->sb_umount(mnt, flags);
  254. }
  255. int security_sb_pivotroot(struct path *old_path, struct path *new_path)
  256. {
  257. return security_ops->sb_pivotroot(old_path, new_path);
  258. }
  259. int security_sb_set_mnt_opts(struct super_block *sb,
  260. struct security_mnt_opts *opts)
  261. {
  262. return security_ops->sb_set_mnt_opts(sb, opts);
  263. }
  264. EXPORT_SYMBOL(security_sb_set_mnt_opts);
  265. void security_sb_clone_mnt_opts(const struct super_block *oldsb,
  266. struct super_block *newsb)
  267. {
  268. security_ops->sb_clone_mnt_opts(oldsb, newsb);
  269. }
  270. EXPORT_SYMBOL(security_sb_clone_mnt_opts);
  271. int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
  272. {
  273. return security_ops->sb_parse_opts_str(options, opts);
  274. }
  275. EXPORT_SYMBOL(security_sb_parse_opts_str);
  276. int security_inode_alloc(struct inode *inode)
  277. {
  278. inode->i_security = NULL;
  279. return security_ops->inode_alloc_security(inode);
  280. }
  281. void security_inode_free(struct inode *inode)
  282. {
  283. ima_inode_free(inode);
  284. security_ops->inode_free_security(inode);
  285. }
  286. int security_inode_init_security(struct inode *inode, struct inode *dir,
  287. const struct qstr *qstr, char **name,
  288. void **value, size_t *len)
  289. {
  290. if (unlikely(IS_PRIVATE(inode)))
  291. return -EOPNOTSUPP;
  292. return security_ops->inode_init_security(inode, dir, qstr, name, value,
  293. len);
  294. }
  295. EXPORT_SYMBOL(security_inode_init_security);
  296. #ifdef CONFIG_SECURITY_PATH
  297. int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
  298. unsigned int dev)
  299. {
  300. if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
  301. return 0;
  302. return security_ops->path_mknod(dir, dentry, mode, dev);
  303. }
  304. EXPORT_SYMBOL(security_path_mknod);
  305. int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode)
  306. {
  307. if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
  308. return 0;
  309. return security_ops->path_mkdir(dir, dentry, mode);
  310. }
  311. EXPORT_SYMBOL(security_path_mkdir);
  312. int security_path_rmdir(struct path *dir, struct dentry *dentry)
  313. {
  314. if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
  315. return 0;
  316. return security_ops->path_rmdir(dir, dentry);
  317. }
  318. int security_path_unlink(struct path *dir, struct dentry *dentry)
  319. {
  320. if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
  321. return 0;
  322. return security_ops->path_unlink(dir, dentry);
  323. }
  324. EXPORT_SYMBOL(security_path_unlink);
  325. int security_path_symlink(struct path *dir, struct dentry *dentry,
  326. const char *old_name)
  327. {
  328. if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
  329. return 0;
  330. return security_ops->path_symlink(dir, dentry, old_name);
  331. }
  332. int security_path_link(struct dentry *old_dentry, struct path *new_dir,
  333. struct dentry *new_dentry)
  334. {
  335. if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
  336. return 0;
  337. return security_ops->path_link(old_dentry, new_dir, new_dentry);
  338. }
  339. int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
  340. struct path *new_dir, struct dentry *new_dentry)
  341. {
  342. if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
  343. (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
  344. return 0;
  345. return security_ops->path_rename(old_dir, old_dentry, new_dir,
  346. new_dentry);
  347. }
  348. EXPORT_SYMBOL(security_path_rename);
  349. int security_path_truncate(struct path *path)
  350. {
  351. if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
  352. return 0;
  353. return security_ops->path_truncate(path);
  354. }
  355. int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
  356. mode_t mode)
  357. {
  358. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  359. return 0;
  360. return security_ops->path_chmod(dentry, mnt, mode);
  361. }
  362. int security_path_chown(struct path *path, uid_t uid, gid_t gid)
  363. {
  364. if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
  365. return 0;
  366. return security_ops->path_chown(path, uid, gid);
  367. }
  368. int security_path_chroot(struct path *path)
  369. {
  370. return security_ops->path_chroot(path);
  371. }
  372. #endif
  373. int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
  374. {
  375. if (unlikely(IS_PRIVATE(dir)))
  376. return 0;
  377. return security_ops->inode_create(dir, dentry, mode);
  378. }
  379. EXPORT_SYMBOL_GPL(security_inode_create);
  380. int security_inode_link(struct dentry *old_dentry, struct inode *dir,
  381. struct dentry *new_dentry)
  382. {
  383. if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
  384. return 0;
  385. return security_ops->inode_link(old_dentry, dir, new_dentry);
  386. }
  387. int security_inode_unlink(struct inode *dir, struct dentry *dentry)
  388. {
  389. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  390. return 0;
  391. return security_ops->inode_unlink(dir, dentry);
  392. }
  393. int security_inode_symlink(struct inode *dir, struct dentry *dentry,
  394. const char *old_name)
  395. {
  396. if (unlikely(IS_PRIVATE(dir)))
  397. return 0;
  398. return security_ops->inode_symlink(dir, dentry, old_name);
  399. }
  400. int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
  401. {
  402. if (unlikely(IS_PRIVATE(dir)))
  403. return 0;
  404. return security_ops->inode_mkdir(dir, dentry, mode);
  405. }
  406. EXPORT_SYMBOL_GPL(security_inode_mkdir);
  407. int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
  408. {
  409. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  410. return 0;
  411. return security_ops->inode_rmdir(dir, dentry);
  412. }
  413. int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
  414. {
  415. if (unlikely(IS_PRIVATE(dir)))
  416. return 0;
  417. return security_ops->inode_mknod(dir, dentry, mode, dev);
  418. }
  419. int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
  420. struct inode *new_dir, struct dentry *new_dentry)
  421. {
  422. if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
  423. (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
  424. return 0;
  425. return security_ops->inode_rename(old_dir, old_dentry,
  426. new_dir, new_dentry);
  427. }
  428. int security_inode_readlink(struct dentry *dentry)
  429. {
  430. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  431. return 0;
  432. return security_ops->inode_readlink(dentry);
  433. }
  434. int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
  435. {
  436. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  437. return 0;
  438. return security_ops->inode_follow_link(dentry, nd);
  439. }
  440. int security_inode_permission(struct inode *inode, int mask)
  441. {
  442. if (unlikely(IS_PRIVATE(inode)))
  443. return 0;
  444. return security_ops->inode_permission(inode, mask, 0);
  445. }
  446. int security_inode_exec_permission(struct inode *inode, unsigned int flags)
  447. {
  448. if (unlikely(IS_PRIVATE(inode)))
  449. return 0;
  450. return security_ops->inode_permission(inode, MAY_EXEC, flags);
  451. }
  452. int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
  453. {
  454. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  455. return 0;
  456. return security_ops->inode_setattr(dentry, attr);
  457. }
  458. EXPORT_SYMBOL_GPL(security_inode_setattr);
  459. int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
  460. {
  461. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  462. return 0;
  463. return security_ops->inode_getattr(mnt, dentry);
  464. }
  465. int security_inode_setxattr(struct dentry *dentry, const char *name,
  466. const void *value, size_t size, int flags)
  467. {
  468. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  469. return 0;
  470. return security_ops->inode_setxattr(dentry, name, value, size, flags);
  471. }
  472. void security_inode_post_setxattr(struct dentry *dentry, const char *name,
  473. const void *value, size_t size, int flags)
  474. {
  475. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  476. return;
  477. security_ops->inode_post_setxattr(dentry, name, value, size, flags);
  478. }
  479. int security_inode_getxattr(struct dentry *dentry, const char *name)
  480. {
  481. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  482. return 0;
  483. return security_ops->inode_getxattr(dentry, name);
  484. }
  485. int security_inode_listxattr(struct dentry *dentry)
  486. {
  487. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  488. return 0;
  489. return security_ops->inode_listxattr(dentry);
  490. }
  491. int security_inode_removexattr(struct dentry *dentry, const char *name)
  492. {
  493. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  494. return 0;
  495. return security_ops->inode_removexattr(dentry, name);
  496. }
  497. int security_inode_need_killpriv(struct dentry *dentry)
  498. {
  499. return security_ops->inode_need_killpriv(dentry);
  500. }
  501. int security_inode_killpriv(struct dentry *dentry)
  502. {
  503. return security_ops->inode_killpriv(dentry);
  504. }
  505. int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
  506. {
  507. if (unlikely(IS_PRIVATE(inode)))
  508. return -EOPNOTSUPP;
  509. return security_ops->inode_getsecurity(inode, name, buffer, alloc);
  510. }
  511. int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
  512. {
  513. if (unlikely(IS_PRIVATE(inode)))
  514. return -EOPNOTSUPP;
  515. return security_ops->inode_setsecurity(inode, name, value, size, flags);
  516. }
  517. int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
  518. {
  519. if (unlikely(IS_PRIVATE(inode)))
  520. return 0;
  521. return security_ops->inode_listsecurity(inode, buffer, buffer_size);
  522. }
  523. void security_inode_getsecid(const struct inode *inode, u32 *secid)
  524. {
  525. security_ops->inode_getsecid(inode, secid);
  526. }
  527. int security_file_permission(struct file *file, int mask)
  528. {
  529. int ret;
  530. ret = security_ops->file_permission(file, mask);
  531. if (ret)
  532. return ret;
  533. return fsnotify_perm(file, mask);
  534. }
  535. int security_file_alloc(struct file *file)
  536. {
  537. return security_ops->file_alloc_security(file);
  538. }
  539. void security_file_free(struct file *file)
  540. {
  541. security_ops->file_free_security(file);
  542. }
  543. int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
  544. {
  545. return security_ops->file_ioctl(file, cmd, arg);
  546. }
  547. int security_file_mmap(struct file *file, unsigned long reqprot,
  548. unsigned long prot, unsigned long flags,
  549. unsigned long addr, unsigned long addr_only)
  550. {
  551. int ret;
  552. ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
  553. if (ret)
  554. return ret;
  555. return ima_file_mmap(file, prot);
  556. }
  557. int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
  558. unsigned long prot)
  559. {
  560. return security_ops->file_mprotect(vma, reqprot, prot);
  561. }
  562. int security_file_lock(struct file *file, unsigned int cmd)
  563. {
  564. return security_ops->file_lock(file, cmd);
  565. }
  566. int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
  567. {
  568. return security_ops->file_fcntl(file, cmd, arg);
  569. }
  570. int security_file_set_fowner(struct file *file)
  571. {
  572. return security_ops->file_set_fowner(file);
  573. }
  574. int security_file_send_sigiotask(struct task_struct *tsk,
  575. struct fown_struct *fown, int sig)
  576. {
  577. return security_ops->file_send_sigiotask(tsk, fown, sig);
  578. }
  579. int security_file_receive(struct file *file)
  580. {
  581. return security_ops->file_receive(file);
  582. }
  583. int security_dentry_open(struct file *file, const struct cred *cred)
  584. {
  585. int ret;
  586. ret = security_ops->dentry_open(file, cred);
  587. if (ret)
  588. return ret;
  589. return fsnotify_perm(file, MAY_OPEN);
  590. }
  591. int security_task_create(unsigned long clone_flags)
  592. {
  593. return security_ops->task_create(clone_flags);
  594. }
  595. int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
  596. {
  597. return security_ops->cred_alloc_blank(cred, gfp);
  598. }
  599. void security_cred_free(struct cred *cred)
  600. {
  601. security_ops->cred_free(cred);
  602. }
  603. int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
  604. {
  605. return security_ops->cred_prepare(new, old, gfp);
  606. }
  607. void security_transfer_creds(struct cred *new, const struct cred *old)
  608. {
  609. security_ops->cred_transfer(new, old);
  610. }
  611. int security_kernel_act_as(struct cred *new, u32 secid)
  612. {
  613. return security_ops->kernel_act_as(new, secid);
  614. }
  615. int security_kernel_create_files_as(struct cred *new, struct inode *inode)
  616. {
  617. return security_ops->kernel_create_files_as(new, inode);
  618. }
  619. int security_kernel_module_request(char *kmod_name)
  620. {
  621. return security_ops->kernel_module_request(kmod_name);
  622. }
  623. int security_task_fix_setuid(struct cred *new, const struct cred *old,
  624. int flags)
  625. {
  626. return security_ops->task_fix_setuid(new, old, flags);
  627. }
  628. int security_task_setpgid(struct task_struct *p, pid_t pgid)
  629. {
  630. return security_ops->task_setpgid(p, pgid);
  631. }
  632. int security_task_getpgid(struct task_struct *p)
  633. {
  634. return security_ops->task_getpgid(p);
  635. }
  636. int security_task_getsid(struct task_struct *p)
  637. {
  638. return security_ops->task_getsid(p);
  639. }
  640. void security_task_getsecid(struct task_struct *p, u32 *secid)
  641. {
  642. security_ops->task_getsecid(p, secid);
  643. }
  644. EXPORT_SYMBOL(security_task_getsecid);
  645. int security_task_setnice(struct task_struct *p, int nice)
  646. {
  647. return security_ops->task_setnice(p, nice);
  648. }
  649. int security_task_setioprio(struct task_struct *p, int ioprio)
  650. {
  651. return security_ops->task_setioprio(p, ioprio);
  652. }
  653. int security_task_getioprio(struct task_struct *p)
  654. {
  655. return security_ops->task_getioprio(p);
  656. }
  657. int security_task_setrlimit(struct task_struct *p, unsigned int resource,
  658. struct rlimit *new_rlim)
  659. {
  660. return security_ops->task_setrlimit(p, resource, new_rlim);
  661. }
  662. int security_task_setscheduler(struct task_struct *p)
  663. {
  664. return security_ops->task_setscheduler(p);
  665. }
  666. int security_task_getscheduler(struct task_struct *p)
  667. {
  668. return security_ops->task_getscheduler(p);
  669. }
  670. int security_task_movememory(struct task_struct *p)
  671. {
  672. return security_ops->task_movememory(p);
  673. }
  674. int security_task_kill(struct task_struct *p, struct siginfo *info,
  675. int sig, u32 secid)
  676. {
  677. return security_ops->task_kill(p, info, sig, secid);
  678. }
  679. int security_task_wait(struct task_struct *p)
  680. {
  681. return security_ops->task_wait(p);
  682. }
  683. int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
  684. unsigned long arg4, unsigned long arg5)
  685. {
  686. return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
  687. }
  688. void security_task_to_inode(struct task_struct *p, struct inode *inode)
  689. {
  690. security_ops->task_to_inode(p, inode);
  691. }
  692. int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
  693. {
  694. return security_ops->ipc_permission(ipcp, flag);
  695. }
  696. void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
  697. {
  698. security_ops->ipc_getsecid(ipcp, secid);
  699. }
  700. int security_msg_msg_alloc(struct msg_msg *msg)
  701. {
  702. return security_ops->msg_msg_alloc_security(msg);
  703. }
  704. void security_msg_msg_free(struct msg_msg *msg)
  705. {
  706. security_ops->msg_msg_free_security(msg);
  707. }
  708. int security_msg_queue_alloc(struct msg_queue *msq)
  709. {
  710. return security_ops->msg_queue_alloc_security(msq);
  711. }
  712. void security_msg_queue_free(struct msg_queue *msq)
  713. {
  714. security_ops->msg_queue_free_security(msq);
  715. }
  716. int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
  717. {
  718. return security_ops->msg_queue_associate(msq, msqflg);
  719. }
  720. int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
  721. {
  722. return security_ops->msg_queue_msgctl(msq, cmd);
  723. }
  724. int security_msg_queue_msgsnd(struct msg_queue *msq,
  725. struct msg_msg *msg, int msqflg)
  726. {
  727. return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
  728. }
  729. int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
  730. struct task_struct *target, long type, int mode)
  731. {
  732. return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
  733. }
  734. int security_shm_alloc(struct shmid_kernel *shp)
  735. {
  736. return security_ops->shm_alloc_security(shp);
  737. }
  738. void security_shm_free(struct shmid_kernel *shp)
  739. {
  740. security_ops->shm_free_security(shp);
  741. }
  742. int security_shm_associate(struct shmid_kernel *shp, int shmflg)
  743. {
  744. return security_ops->shm_associate(shp, shmflg);
  745. }
  746. int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
  747. {
  748. return security_ops->shm_shmctl(shp, cmd);
  749. }
  750. int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
  751. {
  752. return security_ops->shm_shmat(shp, shmaddr, shmflg);
  753. }
  754. int security_sem_alloc(struct sem_array *sma)
  755. {
  756. return security_ops->sem_alloc_security(sma);
  757. }
  758. void security_sem_free(struct sem_array *sma)
  759. {
  760. security_ops->sem_free_security(sma);
  761. }
  762. int security_sem_associate(struct sem_array *sma, int semflg)
  763. {
  764. return security_ops->sem_associate(sma, semflg);
  765. }
  766. int security_sem_semctl(struct sem_array *sma, int cmd)
  767. {
  768. return security_ops->sem_semctl(sma, cmd);
  769. }
  770. int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
  771. unsigned nsops, int alter)
  772. {
  773. return security_ops->sem_semop(sma, sops, nsops, alter);
  774. }
  775. void security_d_instantiate(struct dentry *dentry, struct inode *inode)
  776. {
  777. if (unlikely(inode && IS_PRIVATE(inode)))
  778. return;
  779. security_ops->d_instantiate(dentry, inode);
  780. }
  781. EXPORT_SYMBOL(security_d_instantiate);
  782. int security_getprocattr(struct task_struct *p, char *name, char **value)
  783. {
  784. return security_ops->getprocattr(p, name, value);
  785. }
  786. int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
  787. {
  788. return security_ops->setprocattr(p, name, value, size);
  789. }
  790. int security_netlink_send(struct sock *sk, struct sk_buff *skb)
  791. {
  792. return security_ops->netlink_send(sk, skb);
  793. }
  794. int security_netlink_recv(struct sk_buff *skb, int cap)
  795. {
  796. return security_ops->netlink_recv(skb, cap);
  797. }
  798. EXPORT_SYMBOL(security_netlink_recv);
  799. int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
  800. {
  801. return security_ops->secid_to_secctx(secid, secdata, seclen);
  802. }
  803. EXPORT_SYMBOL(security_secid_to_secctx);
  804. int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
  805. {
  806. return security_ops->secctx_to_secid(secdata, seclen, secid);
  807. }
  808. EXPORT_SYMBOL(security_secctx_to_secid);
  809. void security_release_secctx(char *secdata, u32 seclen)
  810. {
  811. security_ops->release_secctx(secdata, seclen);
  812. }
  813. EXPORT_SYMBOL(security_release_secctx);
  814. int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
  815. {
  816. return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
  817. }
  818. EXPORT_SYMBOL(security_inode_notifysecctx);
  819. int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
  820. {
  821. return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
  822. }
  823. EXPORT_SYMBOL(security_inode_setsecctx);
  824. int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
  825. {
  826. return security_ops->inode_getsecctx(inode, ctx, ctxlen);
  827. }
  828. EXPORT_SYMBOL(security_inode_getsecctx);
  829. #ifdef CONFIG_SECURITY_NETWORK
  830. int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
  831. {
  832. return security_ops->unix_stream_connect(sock, other, newsk);
  833. }
  834. EXPORT_SYMBOL(security_unix_stream_connect);
  835. int security_unix_may_send(struct socket *sock, struct socket *other)
  836. {
  837. return security_ops->unix_may_send(sock, other);
  838. }
  839. EXPORT_SYMBOL(security_unix_may_send);
  840. int security_socket_create(int family, int type, int protocol, int kern)
  841. {
  842. return security_ops->socket_create(family, type, protocol, kern);
  843. }
  844. int security_socket_post_create(struct socket *sock, int family,
  845. int type, int protocol, int kern)
  846. {
  847. return security_ops->socket_post_create(sock, family, type,
  848. protocol, kern);
  849. }
  850. int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
  851. {
  852. return security_ops->socket_bind(sock, address, addrlen);
  853. }
  854. int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
  855. {
  856. return security_ops->socket_connect(sock, address, addrlen);
  857. }
  858. int security_socket_listen(struct socket *sock, int backlog)
  859. {
  860. return security_ops->socket_listen(sock, backlog);
  861. }
  862. int security_socket_accept(struct socket *sock, struct socket *newsock)
  863. {
  864. return security_ops->socket_accept(sock, newsock);
  865. }
  866. int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
  867. {
  868. return security_ops->socket_sendmsg(sock, msg, size);
  869. }
  870. int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
  871. int size, int flags)
  872. {
  873. return security_ops->socket_recvmsg(sock, msg, size, flags);
  874. }
  875. int security_socket_getsockname(struct socket *sock)
  876. {
  877. return security_ops->socket_getsockname(sock);
  878. }
  879. int security_socket_getpeername(struct socket *sock)
  880. {
  881. return security_ops->socket_getpeername(sock);
  882. }
  883. int security_socket_getsockopt(struct socket *sock, int level, int optname)
  884. {
  885. return security_ops->socket_getsockopt(sock, level, optname);
  886. }
  887. int security_socket_setsockopt(struct socket *sock, int level, int optname)
  888. {
  889. return security_ops->socket_setsockopt(sock, level, optname);
  890. }
  891. int security_socket_shutdown(struct socket *sock, int how)
  892. {
  893. return security_ops->socket_shutdown(sock, how);
  894. }
  895. int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
  896. {
  897. return security_ops->socket_sock_rcv_skb(sk, skb);
  898. }
  899. EXPORT_SYMBOL(security_sock_rcv_skb);
  900. int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
  901. int __user *optlen, unsigned len)
  902. {
  903. return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
  904. }
  905. int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
  906. {
  907. return security_ops->socket_getpeersec_dgram(sock, skb, secid);
  908. }
  909. EXPORT_SYMBOL(security_socket_getpeersec_dgram);
  910. int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
  911. {
  912. return security_ops->sk_alloc_security(sk, family, priority);
  913. }
  914. void security_sk_free(struct sock *sk)
  915. {
  916. security_ops->sk_free_security(sk);
  917. }
  918. void security_sk_clone(const struct sock *sk, struct sock *newsk)
  919. {
  920. security_ops->sk_clone_security(sk, newsk);
  921. }
  922. void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
  923. {
  924. security_ops->sk_getsecid(sk, &fl->flowi_secid);
  925. }
  926. EXPORT_SYMBOL(security_sk_classify_flow);
  927. void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
  928. {
  929. security_ops->req_classify_flow(req, fl);
  930. }
  931. EXPORT_SYMBOL(security_req_classify_flow);
  932. void security_sock_graft(struct sock *sk, struct socket *parent)
  933. {
  934. security_ops->sock_graft(sk, parent);
  935. }
  936. EXPORT_SYMBOL(security_sock_graft);
  937. int security_inet_conn_request(struct sock *sk,
  938. struct sk_buff *skb, struct request_sock *req)
  939. {
  940. return security_ops->inet_conn_request(sk, skb, req);
  941. }
  942. EXPORT_SYMBOL(security_inet_conn_request);
  943. void security_inet_csk_clone(struct sock *newsk,
  944. const struct request_sock *req)
  945. {
  946. security_ops->inet_csk_clone(newsk, req);
  947. }
  948. void security_inet_conn_established(struct sock *sk,
  949. struct sk_buff *skb)
  950. {
  951. security_ops->inet_conn_established(sk, skb);
  952. }
  953. int security_secmark_relabel_packet(u32 secid)
  954. {
  955. return security_ops->secmark_relabel_packet(secid);
  956. }
  957. EXPORT_SYMBOL(security_secmark_relabel_packet);
  958. void security_secmark_refcount_inc(void)
  959. {
  960. security_ops->secmark_refcount_inc();
  961. }
  962. EXPORT_SYMBOL(security_secmark_refcount_inc);
  963. void security_secmark_refcount_dec(void)
  964. {
  965. security_ops->secmark_refcount_dec();
  966. }
  967. EXPORT_SYMBOL(security_secmark_refcount_dec);
  968. int security_tun_dev_create(void)
  969. {
  970. return security_ops->tun_dev_create();
  971. }
  972. EXPORT_SYMBOL(security_tun_dev_create);
  973. void security_tun_dev_post_create(struct sock *sk)
  974. {
  975. return security_ops->tun_dev_post_create(sk);
  976. }
  977. EXPORT_SYMBOL(security_tun_dev_post_create);
  978. int security_tun_dev_attach(struct sock *sk)
  979. {
  980. return security_ops->tun_dev_attach(sk);
  981. }
  982. EXPORT_SYMBOL(security_tun_dev_attach);
  983. #endif /* CONFIG_SECURITY_NETWORK */
  984. #ifdef CONFIG_SECURITY_NETWORK_XFRM
  985. int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
  986. {
  987. return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
  988. }
  989. EXPORT_SYMBOL(security_xfrm_policy_alloc);
  990. int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
  991. struct xfrm_sec_ctx **new_ctxp)
  992. {
  993. return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
  994. }
  995. void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
  996. {
  997. security_ops->xfrm_policy_free_security(ctx);
  998. }
  999. EXPORT_SYMBOL(security_xfrm_policy_free);
  1000. int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
  1001. {
  1002. return security_ops->xfrm_policy_delete_security(ctx);
  1003. }
  1004. int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
  1005. {
  1006. return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
  1007. }
  1008. EXPORT_SYMBOL(security_xfrm_state_alloc);
  1009. int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
  1010. struct xfrm_sec_ctx *polsec, u32 secid)
  1011. {
  1012. if (!polsec)
  1013. return 0;
  1014. /*
  1015. * We want the context to be taken from secid which is usually
  1016. * from the sock.
  1017. */
  1018. return security_ops->xfrm_state_alloc_security(x, NULL, secid);
  1019. }
  1020. int security_xfrm_state_delete(struct xfrm_state *x)
  1021. {
  1022. return security_ops->xfrm_state_delete_security(x);
  1023. }
  1024. EXPORT_SYMBOL(security_xfrm_state_delete);
  1025. void security_xfrm_state_free(struct xfrm_state *x)
  1026. {
  1027. security_ops->xfrm_state_free_security(x);
  1028. }
  1029. int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
  1030. {
  1031. return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
  1032. }
  1033. int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
  1034. struct xfrm_policy *xp,
  1035. const struct flowi *fl)
  1036. {
  1037. return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
  1038. }
  1039. int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
  1040. {
  1041. return security_ops->xfrm_decode_session(skb, secid, 1);
  1042. }
  1043. void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
  1044. {
  1045. int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
  1046. BUG_ON(rc);
  1047. }
  1048. EXPORT_SYMBOL(security_skb_classify_flow);
  1049. #endif /* CONFIG_SECURITY_NETWORK_XFRM */
  1050. #ifdef CONFIG_KEYS
  1051. int security_key_alloc(struct key *key, const struct cred *cred,
  1052. unsigned long flags)
  1053. {
  1054. return security_ops->key_alloc(key, cred, flags);
  1055. }
  1056. void security_key_free(struct key *key)
  1057. {
  1058. security_ops->key_free(key);
  1059. }
  1060. int security_key_permission(key_ref_t key_ref,
  1061. const struct cred *cred, key_perm_t perm)
  1062. {
  1063. return security_ops->key_permission(key_ref, cred, perm);
  1064. }
  1065. int security_key_getsecurity(struct key *key, char **_buffer)
  1066. {
  1067. return security_ops->key_getsecurity(key, _buffer);
  1068. }
  1069. #endif /* CONFIG_KEYS */
  1070. #ifdef CONFIG_AUDIT
  1071. int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
  1072. {
  1073. return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
  1074. }
  1075. int security_audit_rule_known(struct audit_krule *krule)
  1076. {
  1077. return security_ops->audit_rule_known(krule);
  1078. }
  1079. void security_audit_rule_free(void *lsmrule)
  1080. {
  1081. security_ops->audit_rule_free(lsmrule);
  1082. }
  1083. int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
  1084. struct audit_context *actx)
  1085. {
  1086. return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
  1087. }
  1088. #endif /* CONFIG_AUDIT */