security.c 33 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128112911301131113211331134113511361137113811391140114111421143114411451146114711481149115011511152115311541155115611571158115911601161116211631164116511661167116811691170117111721173117411751176117711781179118011811182118311841185118611871188118911901191119211931194119511961197119811991200120112021203120412051206120712081209121012111212121312141215121612171218121912201221122212231224122512261227122812291230123112321233123412351236123712381239124012411242124312441245124612471248124912501251125212531254125512561257125812591260126112621263126412651266126712681269127012711272127312741275127612771278127912801281128212831284128512861287128812891290129112921293129412951296129712981299130013011302130313041305130613071308130913101311131213131314131513161317131813191320132113221323132413251326132713281329133013311332133313341335133613371338133913401341134213431344134513461347
  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 struct security_operations default_security_ops;
  24. extern void security_fixup_ops(struct security_operations *ops);
  25. struct security_operations *security_ops; /* Initialized to NULL */
  26. static inline int verify(struct security_operations *ops)
  27. {
  28. /* verify the security_operations structure exists */
  29. if (!ops)
  30. return -EINVAL;
  31. security_fixup_ops(ops);
  32. return 0;
  33. }
  34. static void __init do_security_initcalls(void)
  35. {
  36. initcall_t *call;
  37. call = __security_initcall_start;
  38. while (call < __security_initcall_end) {
  39. (*call) ();
  40. call++;
  41. }
  42. }
  43. /**
  44. * security_init - initializes the security framework
  45. *
  46. * This should be called early in the kernel initialization sequence.
  47. */
  48. int __init security_init(void)
  49. {
  50. printk(KERN_INFO "Security Framework initialized\n");
  51. security_fixup_ops(&default_security_ops);
  52. security_ops = &default_security_ops;
  53. do_security_initcalls();
  54. return 0;
  55. }
  56. /* Save user chosen LSM */
  57. static int __init choose_lsm(char *str)
  58. {
  59. strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  60. return 1;
  61. }
  62. __setup("security=", choose_lsm);
  63. /**
  64. * security_module_enable - Load given security module on boot ?
  65. * @ops: a pointer to the struct security_operations that is to be checked.
  66. *
  67. * Each LSM must pass this method before registering its own operations
  68. * to avoid security registration races. This method may also be used
  69. * to check if your LSM is currently loaded during kernel initialization.
  70. *
  71. * Return true if:
  72. * -The passed LSM is the one chosen by user at boot time,
  73. * -or the passed LSM is configured as the default and the user did not
  74. * choose an alternate LSM at boot time,
  75. * -or there is no default LSM set and the user didn't specify a
  76. * specific LSM and we're the first to ask for registration permission,
  77. * -or the passed LSM is currently loaded.
  78. * Otherwise, return false.
  79. */
  80. int __init security_module_enable(struct security_operations *ops)
  81. {
  82. if (!*chosen_lsm)
  83. strncpy(chosen_lsm, ops->name, SECURITY_NAME_MAX);
  84. else if (strncmp(ops->name, chosen_lsm, SECURITY_NAME_MAX))
  85. return 0;
  86. return 1;
  87. }
  88. /**
  89. * register_security - registers a security framework with the kernel
  90. * @ops: a pointer to the struct security_options that is to be registered
  91. *
  92. * This function allows a security module to register itself with the
  93. * kernel security subsystem. Some rudimentary checking is done on the @ops
  94. * value passed to this function. You'll need to check first if your LSM
  95. * is allowed to register its @ops by calling security_module_enable(@ops).
  96. *
  97. * If there is already a security module registered with the kernel,
  98. * an error will be returned. Otherwise %0 is returned on success.
  99. */
  100. int __init register_security(struct security_operations *ops)
  101. {
  102. if (verify(ops)) {
  103. printk(KERN_DEBUG "%s could not verify "
  104. "security_operations structure.\n", __func__);
  105. return -EINVAL;
  106. }
  107. if (security_ops != &default_security_ops)
  108. return -EAGAIN;
  109. security_ops = ops;
  110. return 0;
  111. }
  112. /* Security operations */
  113. int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
  114. {
  115. return security_ops->ptrace_access_check(child, mode);
  116. }
  117. int security_ptrace_traceme(struct task_struct *parent)
  118. {
  119. return security_ops->ptrace_traceme(parent);
  120. }
  121. int security_capget(struct task_struct *target,
  122. kernel_cap_t *effective,
  123. kernel_cap_t *inheritable,
  124. kernel_cap_t *permitted)
  125. {
  126. return security_ops->capget(target, effective, inheritable, permitted);
  127. }
  128. int security_capset(struct cred *new, const struct cred *old,
  129. const kernel_cap_t *effective,
  130. const kernel_cap_t *inheritable,
  131. const kernel_cap_t *permitted)
  132. {
  133. return security_ops->capset(new, old,
  134. effective, inheritable, permitted);
  135. }
  136. int security_capable(int cap)
  137. {
  138. return security_ops->capable(current, current_cred(), cap,
  139. SECURITY_CAP_AUDIT);
  140. }
  141. int security_real_capable(struct task_struct *tsk, int cap)
  142. {
  143. const struct cred *cred;
  144. int ret;
  145. cred = get_task_cred(tsk);
  146. ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_AUDIT);
  147. put_cred(cred);
  148. return ret;
  149. }
  150. int security_real_capable_noaudit(struct task_struct *tsk, int cap)
  151. {
  152. const struct cred *cred;
  153. int ret;
  154. cred = get_task_cred(tsk);
  155. ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_NOAUDIT);
  156. put_cred(cred);
  157. return ret;
  158. }
  159. int security_acct(struct file *file)
  160. {
  161. return security_ops->acct(file);
  162. }
  163. int security_sysctl(struct ctl_table *table, int op)
  164. {
  165. return security_ops->sysctl(table, op);
  166. }
  167. int security_quotactl(int cmds, int type, int id, struct super_block *sb)
  168. {
  169. return security_ops->quotactl(cmds, type, id, sb);
  170. }
  171. int security_quota_on(struct dentry *dentry)
  172. {
  173. return security_ops->quota_on(dentry);
  174. }
  175. int security_syslog(int type)
  176. {
  177. return security_ops->syslog(type);
  178. }
  179. int security_settime(struct timespec *ts, struct timezone *tz)
  180. {
  181. return security_ops->settime(ts, tz);
  182. }
  183. int security_vm_enough_memory(long pages)
  184. {
  185. WARN_ON(current->mm == NULL);
  186. return security_ops->vm_enough_memory(current->mm, pages);
  187. }
  188. int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
  189. {
  190. WARN_ON(mm == NULL);
  191. return security_ops->vm_enough_memory(mm, pages);
  192. }
  193. int security_vm_enough_memory_kern(long pages)
  194. {
  195. /* If current->mm is a kernel thread then we will pass NULL,
  196. for this specific case that is fine */
  197. return security_ops->vm_enough_memory(current->mm, pages);
  198. }
  199. int security_bprm_set_creds(struct linux_binprm *bprm)
  200. {
  201. return security_ops->bprm_set_creds(bprm);
  202. }
  203. int security_bprm_check(struct linux_binprm *bprm)
  204. {
  205. int ret;
  206. ret = security_ops->bprm_check_security(bprm);
  207. if (ret)
  208. return ret;
  209. return ima_bprm_check(bprm);
  210. }
  211. void security_bprm_committing_creds(struct linux_binprm *bprm)
  212. {
  213. security_ops->bprm_committing_creds(bprm);
  214. }
  215. void security_bprm_committed_creds(struct linux_binprm *bprm)
  216. {
  217. security_ops->bprm_committed_creds(bprm);
  218. }
  219. int security_bprm_secureexec(struct linux_binprm *bprm)
  220. {
  221. return security_ops->bprm_secureexec(bprm);
  222. }
  223. int security_sb_alloc(struct super_block *sb)
  224. {
  225. return security_ops->sb_alloc_security(sb);
  226. }
  227. void security_sb_free(struct super_block *sb)
  228. {
  229. security_ops->sb_free_security(sb);
  230. }
  231. int security_sb_copy_data(char *orig, char *copy)
  232. {
  233. return security_ops->sb_copy_data(orig, copy);
  234. }
  235. EXPORT_SYMBOL(security_sb_copy_data);
  236. int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
  237. {
  238. return security_ops->sb_kern_mount(sb, flags, data);
  239. }
  240. int security_sb_show_options(struct seq_file *m, struct super_block *sb)
  241. {
  242. return security_ops->sb_show_options(m, sb);
  243. }
  244. int security_sb_statfs(struct dentry *dentry)
  245. {
  246. return security_ops->sb_statfs(dentry);
  247. }
  248. int security_sb_mount(char *dev_name, struct path *path,
  249. char *type, unsigned long flags, void *data)
  250. {
  251. return security_ops->sb_mount(dev_name, path, type, flags, data);
  252. }
  253. int security_sb_check_sb(struct vfsmount *mnt, struct path *path)
  254. {
  255. return security_ops->sb_check_sb(mnt, path);
  256. }
  257. int security_sb_umount(struct vfsmount *mnt, int flags)
  258. {
  259. return security_ops->sb_umount(mnt, flags);
  260. }
  261. void security_sb_umount_close(struct vfsmount *mnt)
  262. {
  263. security_ops->sb_umount_close(mnt);
  264. }
  265. void security_sb_umount_busy(struct vfsmount *mnt)
  266. {
  267. security_ops->sb_umount_busy(mnt);
  268. }
  269. void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data)
  270. {
  271. security_ops->sb_post_remount(mnt, flags, data);
  272. }
  273. void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint)
  274. {
  275. security_ops->sb_post_addmount(mnt, mountpoint);
  276. }
  277. int security_sb_pivotroot(struct path *old_path, struct path *new_path)
  278. {
  279. return security_ops->sb_pivotroot(old_path, new_path);
  280. }
  281. void security_sb_post_pivotroot(struct path *old_path, struct path *new_path)
  282. {
  283. security_ops->sb_post_pivotroot(old_path, new_path);
  284. }
  285. int security_sb_set_mnt_opts(struct super_block *sb,
  286. struct security_mnt_opts *opts)
  287. {
  288. return security_ops->sb_set_mnt_opts(sb, opts);
  289. }
  290. EXPORT_SYMBOL(security_sb_set_mnt_opts);
  291. void security_sb_clone_mnt_opts(const struct super_block *oldsb,
  292. struct super_block *newsb)
  293. {
  294. security_ops->sb_clone_mnt_opts(oldsb, newsb);
  295. }
  296. EXPORT_SYMBOL(security_sb_clone_mnt_opts);
  297. int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
  298. {
  299. return security_ops->sb_parse_opts_str(options, opts);
  300. }
  301. EXPORT_SYMBOL(security_sb_parse_opts_str);
  302. int security_inode_alloc(struct inode *inode)
  303. {
  304. int ret;
  305. inode->i_security = NULL;
  306. ret = security_ops->inode_alloc_security(inode);
  307. if (ret)
  308. return ret;
  309. ret = ima_inode_alloc(inode);
  310. if (ret)
  311. security_inode_free(inode);
  312. return ret;
  313. }
  314. void security_inode_free(struct inode *inode)
  315. {
  316. ima_inode_free(inode);
  317. security_ops->inode_free_security(inode);
  318. }
  319. int security_inode_init_security(struct inode *inode, struct inode *dir,
  320. char **name, void **value, size_t *len)
  321. {
  322. if (unlikely(IS_PRIVATE(inode)))
  323. return -EOPNOTSUPP;
  324. return security_ops->inode_init_security(inode, dir, name, value, len);
  325. }
  326. EXPORT_SYMBOL(security_inode_init_security);
  327. #ifdef CONFIG_SECURITY_PATH
  328. int security_path_mknod(struct path *path, struct dentry *dentry, int mode,
  329. unsigned int dev)
  330. {
  331. if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
  332. return 0;
  333. return security_ops->path_mknod(path, dentry, mode, dev);
  334. }
  335. EXPORT_SYMBOL(security_path_mknod);
  336. int security_path_mkdir(struct path *path, struct dentry *dentry, int mode)
  337. {
  338. if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
  339. return 0;
  340. return security_ops->path_mkdir(path, dentry, mode);
  341. }
  342. int security_path_rmdir(struct path *path, struct dentry *dentry)
  343. {
  344. if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
  345. return 0;
  346. return security_ops->path_rmdir(path, dentry);
  347. }
  348. int security_path_unlink(struct path *path, struct dentry *dentry)
  349. {
  350. if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
  351. return 0;
  352. return security_ops->path_unlink(path, dentry);
  353. }
  354. int security_path_symlink(struct path *path, struct dentry *dentry,
  355. const char *old_name)
  356. {
  357. if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
  358. return 0;
  359. return security_ops->path_symlink(path, dentry, old_name);
  360. }
  361. int security_path_link(struct dentry *old_dentry, struct path *new_dir,
  362. struct dentry *new_dentry)
  363. {
  364. if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
  365. return 0;
  366. return security_ops->path_link(old_dentry, new_dir, new_dentry);
  367. }
  368. int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
  369. struct path *new_dir, struct dentry *new_dentry)
  370. {
  371. if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
  372. (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
  373. return 0;
  374. return security_ops->path_rename(old_dir, old_dentry, new_dir,
  375. new_dentry);
  376. }
  377. int security_path_truncate(struct path *path, loff_t length,
  378. unsigned int time_attrs)
  379. {
  380. if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
  381. return 0;
  382. return security_ops->path_truncate(path, length, time_attrs);
  383. }
  384. int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
  385. mode_t mode)
  386. {
  387. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  388. return 0;
  389. return security_ops->path_chmod(dentry, mnt, mode);
  390. }
  391. int security_path_chown(struct path *path, uid_t uid, gid_t gid)
  392. {
  393. if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
  394. return 0;
  395. return security_ops->path_chown(path, uid, gid);
  396. }
  397. int security_path_chroot(struct path *path)
  398. {
  399. return security_ops->path_chroot(path);
  400. }
  401. #endif
  402. int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
  403. {
  404. if (unlikely(IS_PRIVATE(dir)))
  405. return 0;
  406. return security_ops->inode_create(dir, dentry, mode);
  407. }
  408. EXPORT_SYMBOL_GPL(security_inode_create);
  409. int security_inode_link(struct dentry *old_dentry, struct inode *dir,
  410. struct dentry *new_dentry)
  411. {
  412. if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
  413. return 0;
  414. return security_ops->inode_link(old_dentry, dir, new_dentry);
  415. }
  416. int security_inode_unlink(struct inode *dir, struct dentry *dentry)
  417. {
  418. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  419. return 0;
  420. return security_ops->inode_unlink(dir, dentry);
  421. }
  422. int security_inode_symlink(struct inode *dir, struct dentry *dentry,
  423. const char *old_name)
  424. {
  425. if (unlikely(IS_PRIVATE(dir)))
  426. return 0;
  427. return security_ops->inode_symlink(dir, dentry, old_name);
  428. }
  429. int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
  430. {
  431. if (unlikely(IS_PRIVATE(dir)))
  432. return 0;
  433. return security_ops->inode_mkdir(dir, dentry, mode);
  434. }
  435. EXPORT_SYMBOL_GPL(security_inode_mkdir);
  436. int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
  437. {
  438. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  439. return 0;
  440. return security_ops->inode_rmdir(dir, dentry);
  441. }
  442. int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
  443. {
  444. if (unlikely(IS_PRIVATE(dir)))
  445. return 0;
  446. return security_ops->inode_mknod(dir, dentry, mode, dev);
  447. }
  448. int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
  449. struct inode *new_dir, struct dentry *new_dentry)
  450. {
  451. if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
  452. (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
  453. return 0;
  454. return security_ops->inode_rename(old_dir, old_dentry,
  455. new_dir, new_dentry);
  456. }
  457. int security_inode_readlink(struct dentry *dentry)
  458. {
  459. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  460. return 0;
  461. return security_ops->inode_readlink(dentry);
  462. }
  463. int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
  464. {
  465. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  466. return 0;
  467. return security_ops->inode_follow_link(dentry, nd);
  468. }
  469. int security_inode_permission(struct inode *inode, int mask)
  470. {
  471. if (unlikely(IS_PRIVATE(inode)))
  472. return 0;
  473. return security_ops->inode_permission(inode, mask);
  474. }
  475. int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
  476. {
  477. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  478. return 0;
  479. return security_ops->inode_setattr(dentry, attr);
  480. }
  481. EXPORT_SYMBOL_GPL(security_inode_setattr);
  482. int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
  483. {
  484. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  485. return 0;
  486. return security_ops->inode_getattr(mnt, dentry);
  487. }
  488. void security_inode_delete(struct inode *inode)
  489. {
  490. if (unlikely(IS_PRIVATE(inode)))
  491. return;
  492. security_ops->inode_delete(inode);
  493. }
  494. int security_inode_setxattr(struct dentry *dentry, const char *name,
  495. const void *value, size_t size, int flags)
  496. {
  497. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  498. return 0;
  499. return security_ops->inode_setxattr(dentry, name, value, size, flags);
  500. }
  501. void security_inode_post_setxattr(struct dentry *dentry, const char *name,
  502. const void *value, size_t size, int flags)
  503. {
  504. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  505. return;
  506. security_ops->inode_post_setxattr(dentry, name, value, size, flags);
  507. }
  508. int security_inode_getxattr(struct dentry *dentry, const char *name)
  509. {
  510. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  511. return 0;
  512. return security_ops->inode_getxattr(dentry, name);
  513. }
  514. int security_inode_listxattr(struct dentry *dentry)
  515. {
  516. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  517. return 0;
  518. return security_ops->inode_listxattr(dentry);
  519. }
  520. int security_inode_removexattr(struct dentry *dentry, const char *name)
  521. {
  522. if (unlikely(IS_PRIVATE(dentry->d_inode)))
  523. return 0;
  524. return security_ops->inode_removexattr(dentry, name);
  525. }
  526. int security_inode_need_killpriv(struct dentry *dentry)
  527. {
  528. return security_ops->inode_need_killpriv(dentry);
  529. }
  530. int security_inode_killpriv(struct dentry *dentry)
  531. {
  532. return security_ops->inode_killpriv(dentry);
  533. }
  534. int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
  535. {
  536. if (unlikely(IS_PRIVATE(inode)))
  537. return 0;
  538. return security_ops->inode_getsecurity(inode, name, buffer, alloc);
  539. }
  540. int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
  541. {
  542. if (unlikely(IS_PRIVATE(inode)))
  543. return 0;
  544. return security_ops->inode_setsecurity(inode, name, value, size, flags);
  545. }
  546. int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
  547. {
  548. if (unlikely(IS_PRIVATE(inode)))
  549. return 0;
  550. return security_ops->inode_listsecurity(inode, buffer, buffer_size);
  551. }
  552. void security_inode_getsecid(const struct inode *inode, u32 *secid)
  553. {
  554. security_ops->inode_getsecid(inode, secid);
  555. }
  556. int security_file_permission(struct file *file, int mask)
  557. {
  558. return security_ops->file_permission(file, mask);
  559. }
  560. int security_file_alloc(struct file *file)
  561. {
  562. return security_ops->file_alloc_security(file);
  563. }
  564. void security_file_free(struct file *file)
  565. {
  566. security_ops->file_free_security(file);
  567. }
  568. int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
  569. {
  570. return security_ops->file_ioctl(file, cmd, arg);
  571. }
  572. int security_file_mmap(struct file *file, unsigned long reqprot,
  573. unsigned long prot, unsigned long flags,
  574. unsigned long addr, unsigned long addr_only)
  575. {
  576. int ret;
  577. ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
  578. if (ret)
  579. return ret;
  580. return ima_file_mmap(file, prot);
  581. }
  582. int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
  583. unsigned long prot)
  584. {
  585. return security_ops->file_mprotect(vma, reqprot, prot);
  586. }
  587. int security_file_lock(struct file *file, unsigned int cmd)
  588. {
  589. return security_ops->file_lock(file, cmd);
  590. }
  591. int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
  592. {
  593. return security_ops->file_fcntl(file, cmd, arg);
  594. }
  595. int security_file_set_fowner(struct file *file)
  596. {
  597. return security_ops->file_set_fowner(file);
  598. }
  599. int security_file_send_sigiotask(struct task_struct *tsk,
  600. struct fown_struct *fown, int sig)
  601. {
  602. return security_ops->file_send_sigiotask(tsk, fown, sig);
  603. }
  604. int security_file_receive(struct file *file)
  605. {
  606. return security_ops->file_receive(file);
  607. }
  608. int security_dentry_open(struct file *file, const struct cred *cred)
  609. {
  610. return security_ops->dentry_open(file, cred);
  611. }
  612. int security_task_create(unsigned long clone_flags)
  613. {
  614. return security_ops->task_create(clone_flags);
  615. }
  616. int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
  617. {
  618. return security_ops->cred_alloc_blank(cred, gfp);
  619. }
  620. void security_cred_free(struct cred *cred)
  621. {
  622. security_ops->cred_free(cred);
  623. }
  624. int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
  625. {
  626. return security_ops->cred_prepare(new, old, gfp);
  627. }
  628. void security_commit_creds(struct cred *new, const struct cred *old)
  629. {
  630. security_ops->cred_commit(new, old);
  631. }
  632. void security_transfer_creds(struct cred *new, const struct cred *old)
  633. {
  634. security_ops->cred_transfer(new, old);
  635. }
  636. int security_kernel_act_as(struct cred *new, u32 secid)
  637. {
  638. return security_ops->kernel_act_as(new, secid);
  639. }
  640. int security_kernel_create_files_as(struct cred *new, struct inode *inode)
  641. {
  642. return security_ops->kernel_create_files_as(new, inode);
  643. }
  644. int security_kernel_module_request(char *kmod_name)
  645. {
  646. return security_ops->kernel_module_request(kmod_name);
  647. }
  648. int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
  649. {
  650. return security_ops->task_setuid(id0, id1, id2, flags);
  651. }
  652. int security_task_fix_setuid(struct cred *new, const struct cred *old,
  653. int flags)
  654. {
  655. return security_ops->task_fix_setuid(new, old, flags);
  656. }
  657. int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags)
  658. {
  659. return security_ops->task_setgid(id0, id1, id2, flags);
  660. }
  661. int security_task_setpgid(struct task_struct *p, pid_t pgid)
  662. {
  663. return security_ops->task_setpgid(p, pgid);
  664. }
  665. int security_task_getpgid(struct task_struct *p)
  666. {
  667. return security_ops->task_getpgid(p);
  668. }
  669. int security_task_getsid(struct task_struct *p)
  670. {
  671. return security_ops->task_getsid(p);
  672. }
  673. void security_task_getsecid(struct task_struct *p, u32 *secid)
  674. {
  675. security_ops->task_getsecid(p, secid);
  676. }
  677. EXPORT_SYMBOL(security_task_getsecid);
  678. int security_task_setgroups(struct group_info *group_info)
  679. {
  680. return security_ops->task_setgroups(group_info);
  681. }
  682. int security_task_setnice(struct task_struct *p, int nice)
  683. {
  684. return security_ops->task_setnice(p, nice);
  685. }
  686. int security_task_setioprio(struct task_struct *p, int ioprio)
  687. {
  688. return security_ops->task_setioprio(p, ioprio);
  689. }
  690. int security_task_getioprio(struct task_struct *p)
  691. {
  692. return security_ops->task_getioprio(p);
  693. }
  694. int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim)
  695. {
  696. return security_ops->task_setrlimit(resource, new_rlim);
  697. }
  698. int security_task_setscheduler(struct task_struct *p,
  699. int policy, struct sched_param *lp)
  700. {
  701. return security_ops->task_setscheduler(p, policy, lp);
  702. }
  703. int security_task_getscheduler(struct task_struct *p)
  704. {
  705. return security_ops->task_getscheduler(p);
  706. }
  707. int security_task_movememory(struct task_struct *p)
  708. {
  709. return security_ops->task_movememory(p);
  710. }
  711. int security_task_kill(struct task_struct *p, struct siginfo *info,
  712. int sig, u32 secid)
  713. {
  714. return security_ops->task_kill(p, info, sig, secid);
  715. }
  716. int security_task_wait(struct task_struct *p)
  717. {
  718. return security_ops->task_wait(p);
  719. }
  720. int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
  721. unsigned long arg4, unsigned long arg5)
  722. {
  723. return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
  724. }
  725. void security_task_to_inode(struct task_struct *p, struct inode *inode)
  726. {
  727. security_ops->task_to_inode(p, inode);
  728. }
  729. int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
  730. {
  731. return security_ops->ipc_permission(ipcp, flag);
  732. }
  733. void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
  734. {
  735. security_ops->ipc_getsecid(ipcp, secid);
  736. }
  737. int security_msg_msg_alloc(struct msg_msg *msg)
  738. {
  739. return security_ops->msg_msg_alloc_security(msg);
  740. }
  741. void security_msg_msg_free(struct msg_msg *msg)
  742. {
  743. security_ops->msg_msg_free_security(msg);
  744. }
  745. int security_msg_queue_alloc(struct msg_queue *msq)
  746. {
  747. return security_ops->msg_queue_alloc_security(msq);
  748. }
  749. void security_msg_queue_free(struct msg_queue *msq)
  750. {
  751. security_ops->msg_queue_free_security(msq);
  752. }
  753. int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
  754. {
  755. return security_ops->msg_queue_associate(msq, msqflg);
  756. }
  757. int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
  758. {
  759. return security_ops->msg_queue_msgctl(msq, cmd);
  760. }
  761. int security_msg_queue_msgsnd(struct msg_queue *msq,
  762. struct msg_msg *msg, int msqflg)
  763. {
  764. return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
  765. }
  766. int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
  767. struct task_struct *target, long type, int mode)
  768. {
  769. return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
  770. }
  771. int security_shm_alloc(struct shmid_kernel *shp)
  772. {
  773. return security_ops->shm_alloc_security(shp);
  774. }
  775. void security_shm_free(struct shmid_kernel *shp)
  776. {
  777. security_ops->shm_free_security(shp);
  778. }
  779. int security_shm_associate(struct shmid_kernel *shp, int shmflg)
  780. {
  781. return security_ops->shm_associate(shp, shmflg);
  782. }
  783. int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
  784. {
  785. return security_ops->shm_shmctl(shp, cmd);
  786. }
  787. int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
  788. {
  789. return security_ops->shm_shmat(shp, shmaddr, shmflg);
  790. }
  791. int security_sem_alloc(struct sem_array *sma)
  792. {
  793. return security_ops->sem_alloc_security(sma);
  794. }
  795. void security_sem_free(struct sem_array *sma)
  796. {
  797. security_ops->sem_free_security(sma);
  798. }
  799. int security_sem_associate(struct sem_array *sma, int semflg)
  800. {
  801. return security_ops->sem_associate(sma, semflg);
  802. }
  803. int security_sem_semctl(struct sem_array *sma, int cmd)
  804. {
  805. return security_ops->sem_semctl(sma, cmd);
  806. }
  807. int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
  808. unsigned nsops, int alter)
  809. {
  810. return security_ops->sem_semop(sma, sops, nsops, alter);
  811. }
  812. void security_d_instantiate(struct dentry *dentry, struct inode *inode)
  813. {
  814. if (unlikely(inode && IS_PRIVATE(inode)))
  815. return;
  816. security_ops->d_instantiate(dentry, inode);
  817. }
  818. EXPORT_SYMBOL(security_d_instantiate);
  819. int security_getprocattr(struct task_struct *p, char *name, char **value)
  820. {
  821. return security_ops->getprocattr(p, name, value);
  822. }
  823. int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
  824. {
  825. return security_ops->setprocattr(p, name, value, size);
  826. }
  827. int security_netlink_send(struct sock *sk, struct sk_buff *skb)
  828. {
  829. return security_ops->netlink_send(sk, skb);
  830. }
  831. int security_netlink_recv(struct sk_buff *skb, int cap)
  832. {
  833. return security_ops->netlink_recv(skb, cap);
  834. }
  835. EXPORT_SYMBOL(security_netlink_recv);
  836. int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
  837. {
  838. return security_ops->secid_to_secctx(secid, secdata, seclen);
  839. }
  840. EXPORT_SYMBOL(security_secid_to_secctx);
  841. int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
  842. {
  843. return security_ops->secctx_to_secid(secdata, seclen, secid);
  844. }
  845. EXPORT_SYMBOL(security_secctx_to_secid);
  846. void security_release_secctx(char *secdata, u32 seclen)
  847. {
  848. security_ops->release_secctx(secdata, seclen);
  849. }
  850. EXPORT_SYMBOL(security_release_secctx);
  851. int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
  852. {
  853. return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
  854. }
  855. EXPORT_SYMBOL(security_inode_notifysecctx);
  856. int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
  857. {
  858. return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
  859. }
  860. EXPORT_SYMBOL(security_inode_setsecctx);
  861. int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
  862. {
  863. return security_ops->inode_getsecctx(inode, ctx, ctxlen);
  864. }
  865. EXPORT_SYMBOL(security_inode_getsecctx);
  866. #ifdef CONFIG_SECURITY_NETWORK
  867. int security_unix_stream_connect(struct socket *sock, struct socket *other,
  868. struct sock *newsk)
  869. {
  870. return security_ops->unix_stream_connect(sock, other, newsk);
  871. }
  872. EXPORT_SYMBOL(security_unix_stream_connect);
  873. int security_unix_may_send(struct socket *sock, struct socket *other)
  874. {
  875. return security_ops->unix_may_send(sock, other);
  876. }
  877. EXPORT_SYMBOL(security_unix_may_send);
  878. int security_socket_create(int family, int type, int protocol, int kern)
  879. {
  880. return security_ops->socket_create(family, type, protocol, kern);
  881. }
  882. int security_socket_post_create(struct socket *sock, int family,
  883. int type, int protocol, int kern)
  884. {
  885. return security_ops->socket_post_create(sock, family, type,
  886. protocol, kern);
  887. }
  888. int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
  889. {
  890. return security_ops->socket_bind(sock, address, addrlen);
  891. }
  892. int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
  893. {
  894. return security_ops->socket_connect(sock, address, addrlen);
  895. }
  896. int security_socket_listen(struct socket *sock, int backlog)
  897. {
  898. return security_ops->socket_listen(sock, backlog);
  899. }
  900. int security_socket_accept(struct socket *sock, struct socket *newsock)
  901. {
  902. return security_ops->socket_accept(sock, newsock);
  903. }
  904. int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
  905. {
  906. return security_ops->socket_sendmsg(sock, msg, size);
  907. }
  908. int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
  909. int size, int flags)
  910. {
  911. return security_ops->socket_recvmsg(sock, msg, size, flags);
  912. }
  913. int security_socket_getsockname(struct socket *sock)
  914. {
  915. return security_ops->socket_getsockname(sock);
  916. }
  917. int security_socket_getpeername(struct socket *sock)
  918. {
  919. return security_ops->socket_getpeername(sock);
  920. }
  921. int security_socket_getsockopt(struct socket *sock, int level, int optname)
  922. {
  923. return security_ops->socket_getsockopt(sock, level, optname);
  924. }
  925. int security_socket_setsockopt(struct socket *sock, int level, int optname)
  926. {
  927. return security_ops->socket_setsockopt(sock, level, optname);
  928. }
  929. int security_socket_shutdown(struct socket *sock, int how)
  930. {
  931. return security_ops->socket_shutdown(sock, how);
  932. }
  933. int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
  934. {
  935. return security_ops->socket_sock_rcv_skb(sk, skb);
  936. }
  937. EXPORT_SYMBOL(security_sock_rcv_skb);
  938. int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
  939. int __user *optlen, unsigned len)
  940. {
  941. return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
  942. }
  943. int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
  944. {
  945. return security_ops->socket_getpeersec_dgram(sock, skb, secid);
  946. }
  947. EXPORT_SYMBOL(security_socket_getpeersec_dgram);
  948. int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
  949. {
  950. return security_ops->sk_alloc_security(sk, family, priority);
  951. }
  952. void security_sk_free(struct sock *sk)
  953. {
  954. security_ops->sk_free_security(sk);
  955. }
  956. void security_sk_clone(const struct sock *sk, struct sock *newsk)
  957. {
  958. security_ops->sk_clone_security(sk, newsk);
  959. }
  960. void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
  961. {
  962. security_ops->sk_getsecid(sk, &fl->secid);
  963. }
  964. EXPORT_SYMBOL(security_sk_classify_flow);
  965. void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
  966. {
  967. security_ops->req_classify_flow(req, fl);
  968. }
  969. EXPORT_SYMBOL(security_req_classify_flow);
  970. void security_sock_graft(struct sock *sk, struct socket *parent)
  971. {
  972. security_ops->sock_graft(sk, parent);
  973. }
  974. EXPORT_SYMBOL(security_sock_graft);
  975. int security_inet_conn_request(struct sock *sk,
  976. struct sk_buff *skb, struct request_sock *req)
  977. {
  978. return security_ops->inet_conn_request(sk, skb, req);
  979. }
  980. EXPORT_SYMBOL(security_inet_conn_request);
  981. void security_inet_csk_clone(struct sock *newsk,
  982. const struct request_sock *req)
  983. {
  984. security_ops->inet_csk_clone(newsk, req);
  985. }
  986. void security_inet_conn_established(struct sock *sk,
  987. struct sk_buff *skb)
  988. {
  989. security_ops->inet_conn_established(sk, skb);
  990. }
  991. int security_tun_dev_create(void)
  992. {
  993. return security_ops->tun_dev_create();
  994. }
  995. EXPORT_SYMBOL(security_tun_dev_create);
  996. void security_tun_dev_post_create(struct sock *sk)
  997. {
  998. return security_ops->tun_dev_post_create(sk);
  999. }
  1000. EXPORT_SYMBOL(security_tun_dev_post_create);
  1001. int security_tun_dev_attach(struct sock *sk)
  1002. {
  1003. return security_ops->tun_dev_attach(sk);
  1004. }
  1005. EXPORT_SYMBOL(security_tun_dev_attach);
  1006. #endif /* CONFIG_SECURITY_NETWORK */
  1007. #ifdef CONFIG_SECURITY_NETWORK_XFRM
  1008. int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
  1009. {
  1010. return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
  1011. }
  1012. EXPORT_SYMBOL(security_xfrm_policy_alloc);
  1013. int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
  1014. struct xfrm_sec_ctx **new_ctxp)
  1015. {
  1016. return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
  1017. }
  1018. void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
  1019. {
  1020. security_ops->xfrm_policy_free_security(ctx);
  1021. }
  1022. EXPORT_SYMBOL(security_xfrm_policy_free);
  1023. int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
  1024. {
  1025. return security_ops->xfrm_policy_delete_security(ctx);
  1026. }
  1027. int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
  1028. {
  1029. return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
  1030. }
  1031. EXPORT_SYMBOL(security_xfrm_state_alloc);
  1032. int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
  1033. struct xfrm_sec_ctx *polsec, u32 secid)
  1034. {
  1035. if (!polsec)
  1036. return 0;
  1037. /*
  1038. * We want the context to be taken from secid which is usually
  1039. * from the sock.
  1040. */
  1041. return security_ops->xfrm_state_alloc_security(x, NULL, secid);
  1042. }
  1043. int security_xfrm_state_delete(struct xfrm_state *x)
  1044. {
  1045. return security_ops->xfrm_state_delete_security(x);
  1046. }
  1047. EXPORT_SYMBOL(security_xfrm_state_delete);
  1048. void security_xfrm_state_free(struct xfrm_state *x)
  1049. {
  1050. security_ops->xfrm_state_free_security(x);
  1051. }
  1052. int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
  1053. {
  1054. return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
  1055. }
  1056. int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
  1057. struct xfrm_policy *xp, struct flowi *fl)
  1058. {
  1059. return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
  1060. }
  1061. int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
  1062. {
  1063. return security_ops->xfrm_decode_session(skb, secid, 1);
  1064. }
  1065. void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
  1066. {
  1067. int rc = security_ops->xfrm_decode_session(skb, &fl->secid, 0);
  1068. BUG_ON(rc);
  1069. }
  1070. EXPORT_SYMBOL(security_skb_classify_flow);
  1071. #endif /* CONFIG_SECURITY_NETWORK_XFRM */
  1072. #ifdef CONFIG_KEYS
  1073. int security_key_alloc(struct key *key, const struct cred *cred,
  1074. unsigned long flags)
  1075. {
  1076. return security_ops->key_alloc(key, cred, flags);
  1077. }
  1078. void security_key_free(struct key *key)
  1079. {
  1080. security_ops->key_free(key);
  1081. }
  1082. int security_key_permission(key_ref_t key_ref,
  1083. const struct cred *cred, key_perm_t perm)
  1084. {
  1085. return security_ops->key_permission(key_ref, cred, perm);
  1086. }
  1087. int security_key_getsecurity(struct key *key, char **_buffer)
  1088. {
  1089. return security_ops->key_getsecurity(key, _buffer);
  1090. }
  1091. int security_key_session_to_parent(const struct cred *cred,
  1092. const struct cred *parent_cred,
  1093. struct key *key)
  1094. {
  1095. return security_ops->key_session_to_parent(cred, parent_cred, key);
  1096. }
  1097. #endif /* CONFIG_KEYS */
  1098. #ifdef CONFIG_AUDIT
  1099. int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
  1100. {
  1101. return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
  1102. }
  1103. int security_audit_rule_known(struct audit_krule *krule)
  1104. {
  1105. return security_ops->audit_rule_known(krule);
  1106. }
  1107. void security_audit_rule_free(void *lsmrule)
  1108. {
  1109. security_ops->audit_rule_free(lsmrule);
  1110. }
  1111. int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
  1112. struct audit_context *actx)
  1113. {
  1114. return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
  1115. }
  1116. #endif /* CONFIG_AUDIT */