security.c 33 KB

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