capability.c 24 KB

123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652653654655656657658659660661662663664665666667668669670671672673674675676677678679680681682683684685686687688689690691692693694695696697698699700701702703704705706707708709710711712713714715716717718719720721722723724725726727728729730731732733734735736737738739740741742743744745746747748749750751752753754755756757758759760761762763764765766767768769770771772773774775776777778779780781782783784785786787788789790791792793794795796797798799800801802803804805806807808809810811812813814815816817818819820821822823824825826827828829830831832833834835836837838839840841842843844845846847848849850851852853854855856857858859860861862863864865866867868869870871872873874875876877878879880881882883884885886887888889890891892893894895896897898899900901902903904905906907908909910911912913914915916917918919920921922923924925926927928929930931932933934935936937938939940941942943944945946947948949950951952953954955956957958959960961962963964965966967968969970971972973974975976977978979980981982983984985986987988989990991992993994995996997998999100010011002100310041005100610071008100910101011101210131014101510161017101810191020102110221023102410251026102710281029103010311032103310341035103610371038103910401041104210431044104510461047104810491050105110521053105410551056105710581059106010611062106310641065106610671068106910701071107210731074107510761077107810791080108110821083108410851086108710881089109010911092109310941095109610971098109911001101110211031104110511061107110811091110111111121113111411151116111711181119112011211122112311241125112611271128
  1. /*
  2. * Capabilities Linux Security Module
  3. *
  4. * This is the default security module in case no other module is loaded.
  5. *
  6. * This program is free software; you can redistribute it and/or modify
  7. * it under the terms of the GNU General Public License as published by
  8. * the Free Software Foundation; either version 2 of the License, or
  9. * (at your option) any later version.
  10. *
  11. */
  12. #include <linux/security.h>
  13. static int cap_acct(struct file *file)
  14. {
  15. return 0;
  16. }
  17. static int cap_sysctl(ctl_table *table, int op)
  18. {
  19. return 0;
  20. }
  21. static int cap_quotactl(int cmds, int type, int id, struct super_block *sb)
  22. {
  23. return 0;
  24. }
  25. static int cap_quota_on(struct dentry *dentry)
  26. {
  27. return 0;
  28. }
  29. static int cap_bprm_check_security (struct linux_binprm *bprm)
  30. {
  31. return 0;
  32. }
  33. static void cap_bprm_committing_creds(struct linux_binprm *bprm)
  34. {
  35. }
  36. static void cap_bprm_committed_creds(struct linux_binprm *bprm)
  37. {
  38. }
  39. static int cap_sb_alloc_security(struct super_block *sb)
  40. {
  41. return 0;
  42. }
  43. static void cap_sb_free_security(struct super_block *sb)
  44. {
  45. }
  46. static int cap_sb_copy_data(char *orig, char *copy)
  47. {
  48. return 0;
  49. }
  50. static int cap_sb_kern_mount(struct super_block *sb, int flags, void *data)
  51. {
  52. return 0;
  53. }
  54. static int cap_sb_show_options(struct seq_file *m, struct super_block *sb)
  55. {
  56. return 0;
  57. }
  58. static int cap_sb_statfs(struct dentry *dentry)
  59. {
  60. return 0;
  61. }
  62. static int cap_sb_mount(char *dev_name, struct path *path, char *type,
  63. unsigned long flags, void *data)
  64. {
  65. return 0;
  66. }
  67. static int cap_sb_check_sb(struct vfsmount *mnt, struct path *path)
  68. {
  69. return 0;
  70. }
  71. static int cap_sb_umount(struct vfsmount *mnt, int flags)
  72. {
  73. return 0;
  74. }
  75. static void cap_sb_umount_close(struct vfsmount *mnt)
  76. {
  77. }
  78. static void cap_sb_umount_busy(struct vfsmount *mnt)
  79. {
  80. }
  81. static void cap_sb_post_remount(struct vfsmount *mnt, unsigned long flags,
  82. void *data)
  83. {
  84. }
  85. static void cap_sb_post_addmount(struct vfsmount *mnt, struct path *path)
  86. {
  87. }
  88. static int cap_sb_pivotroot(struct path *old_path, struct path *new_path)
  89. {
  90. return 0;
  91. }
  92. static void cap_sb_post_pivotroot(struct path *old_path, struct path *new_path)
  93. {
  94. }
  95. static int cap_sb_set_mnt_opts(struct super_block *sb,
  96. struct security_mnt_opts *opts)
  97. {
  98. if (unlikely(opts->num_mnt_opts))
  99. return -EOPNOTSUPP;
  100. return 0;
  101. }
  102. static void cap_sb_clone_mnt_opts(const struct super_block *oldsb,
  103. struct super_block *newsb)
  104. {
  105. }
  106. static int cap_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
  107. {
  108. return 0;
  109. }
  110. static int cap_inode_alloc_security(struct inode *inode)
  111. {
  112. return 0;
  113. }
  114. static void cap_inode_free_security(struct inode *inode)
  115. {
  116. }
  117. static int cap_inode_init_security(struct inode *inode, struct inode *dir,
  118. char **name, void **value, size_t *len)
  119. {
  120. return -EOPNOTSUPP;
  121. }
  122. static int cap_inode_create(struct inode *inode, struct dentry *dentry,
  123. int mask)
  124. {
  125. return 0;
  126. }
  127. static int cap_inode_link(struct dentry *old_dentry, struct inode *inode,
  128. struct dentry *new_dentry)
  129. {
  130. return 0;
  131. }
  132. static int cap_inode_unlink(struct inode *inode, struct dentry *dentry)
  133. {
  134. return 0;
  135. }
  136. static int cap_inode_symlink(struct inode *inode, struct dentry *dentry,
  137. const char *name)
  138. {
  139. return 0;
  140. }
  141. static int cap_inode_mkdir(struct inode *inode, struct dentry *dentry,
  142. int mask)
  143. {
  144. return 0;
  145. }
  146. static int cap_inode_rmdir(struct inode *inode, struct dentry *dentry)
  147. {
  148. return 0;
  149. }
  150. static int cap_inode_mknod(struct inode *inode, struct dentry *dentry,
  151. int mode, dev_t dev)
  152. {
  153. return 0;
  154. }
  155. static int cap_inode_rename(struct inode *old_inode, struct dentry *old_dentry,
  156. struct inode *new_inode, struct dentry *new_dentry)
  157. {
  158. return 0;
  159. }
  160. static int cap_inode_readlink(struct dentry *dentry)
  161. {
  162. return 0;
  163. }
  164. static int cap_inode_follow_link(struct dentry *dentry,
  165. struct nameidata *nameidata)
  166. {
  167. return 0;
  168. }
  169. static int cap_inode_permission(struct inode *inode, int mask)
  170. {
  171. return 0;
  172. }
  173. static int cap_inode_setattr(struct dentry *dentry, struct iattr *iattr)
  174. {
  175. return 0;
  176. }
  177. static int cap_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
  178. {
  179. return 0;
  180. }
  181. static void cap_inode_delete(struct inode *ino)
  182. {
  183. }
  184. static void cap_inode_post_setxattr(struct dentry *dentry, const char *name,
  185. const void *value, size_t size, int flags)
  186. {
  187. }
  188. static int cap_inode_getxattr(struct dentry *dentry, const char *name)
  189. {
  190. return 0;
  191. }
  192. static int cap_inode_listxattr(struct dentry *dentry)
  193. {
  194. return 0;
  195. }
  196. static int cap_inode_getsecurity(const struct inode *inode, const char *name,
  197. void **buffer, bool alloc)
  198. {
  199. return -EOPNOTSUPP;
  200. }
  201. static int cap_inode_setsecurity(struct inode *inode, const char *name,
  202. const void *value, size_t size, int flags)
  203. {
  204. return -EOPNOTSUPP;
  205. }
  206. static int cap_inode_listsecurity(struct inode *inode, char *buffer,
  207. size_t buffer_size)
  208. {
  209. return 0;
  210. }
  211. static void cap_inode_getsecid(const struct inode *inode, u32 *secid)
  212. {
  213. *secid = 0;
  214. }
  215. #ifdef CONFIG_SECURITY_PATH
  216. static int cap_path_mknod(struct path *dir, struct dentry *dentry, int mode,
  217. unsigned int dev)
  218. {
  219. return 0;
  220. }
  221. static int cap_path_mkdir(struct path *dir, struct dentry *dentry, int mode)
  222. {
  223. return 0;
  224. }
  225. static int cap_path_rmdir(struct path *dir, struct dentry *dentry)
  226. {
  227. return 0;
  228. }
  229. static int cap_path_unlink(struct path *dir, struct dentry *dentry)
  230. {
  231. return 0;
  232. }
  233. static int cap_path_symlink(struct path *dir, struct dentry *dentry,
  234. const char *old_name)
  235. {
  236. return 0;
  237. }
  238. static int cap_path_link(struct dentry *old_dentry, struct path *new_dir,
  239. struct dentry *new_dentry)
  240. {
  241. return 0;
  242. }
  243. static int cap_path_rename(struct path *old_path, struct dentry *old_dentry,
  244. struct path *new_path, struct dentry *new_dentry)
  245. {
  246. return 0;
  247. }
  248. static int cap_path_truncate(struct path *path, loff_t length,
  249. unsigned int time_attrs)
  250. {
  251. return 0;
  252. }
  253. static int cap_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
  254. mode_t mode)
  255. {
  256. return 0;
  257. }
  258. static int cap_path_chown(struct path *path, uid_t uid, gid_t gid)
  259. {
  260. return 0;
  261. }
  262. static int cap_path_chroot(struct path *root)
  263. {
  264. return 0;
  265. }
  266. #endif
  267. static int cap_file_permission(struct file *file, int mask)
  268. {
  269. return 0;
  270. }
  271. static int cap_file_alloc_security(struct file *file)
  272. {
  273. return 0;
  274. }
  275. static void cap_file_free_security(struct file *file)
  276. {
  277. }
  278. static int cap_file_ioctl(struct file *file, unsigned int command,
  279. unsigned long arg)
  280. {
  281. return 0;
  282. }
  283. static int cap_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
  284. unsigned long prot)
  285. {
  286. return 0;
  287. }
  288. static int cap_file_lock(struct file *file, unsigned int cmd)
  289. {
  290. return 0;
  291. }
  292. static int cap_file_fcntl(struct file *file, unsigned int cmd,
  293. unsigned long arg)
  294. {
  295. return 0;
  296. }
  297. static int cap_file_set_fowner(struct file *file)
  298. {
  299. return 0;
  300. }
  301. static int cap_file_send_sigiotask(struct task_struct *tsk,
  302. struct fown_struct *fown, int sig)
  303. {
  304. return 0;
  305. }
  306. static int cap_file_receive(struct file *file)
  307. {
  308. return 0;
  309. }
  310. static int cap_dentry_open(struct file *file, const struct cred *cred)
  311. {
  312. return 0;
  313. }
  314. static int cap_task_create(unsigned long clone_flags)
  315. {
  316. return 0;
  317. }
  318. static int cap_cred_alloc_blank(struct cred *cred, gfp_t gfp)
  319. {
  320. return 0;
  321. }
  322. static void cap_cred_free(struct cred *cred)
  323. {
  324. }
  325. static int cap_cred_prepare(struct cred *new, const struct cred *old, gfp_t gfp)
  326. {
  327. return 0;
  328. }
  329. static void cap_cred_commit(struct cred *new, const struct cred *old)
  330. {
  331. }
  332. static void cap_cred_transfer(struct cred *new, const struct cred *old)
  333. {
  334. }
  335. static int cap_kernel_act_as(struct cred *new, u32 secid)
  336. {
  337. return 0;
  338. }
  339. static int cap_kernel_create_files_as(struct cred *new, struct inode *inode)
  340. {
  341. return 0;
  342. }
  343. static int cap_kernel_module_request(char *kmod_name)
  344. {
  345. return 0;
  346. }
  347. static int cap_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
  348. {
  349. return 0;
  350. }
  351. static int cap_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags)
  352. {
  353. return 0;
  354. }
  355. static int cap_task_setpgid(struct task_struct *p, pid_t pgid)
  356. {
  357. return 0;
  358. }
  359. static int cap_task_getpgid(struct task_struct *p)
  360. {
  361. return 0;
  362. }
  363. static int cap_task_getsid(struct task_struct *p)
  364. {
  365. return 0;
  366. }
  367. static void cap_task_getsecid(struct task_struct *p, u32 *secid)
  368. {
  369. *secid = 0;
  370. }
  371. static int cap_task_setgroups(struct group_info *group_info)
  372. {
  373. return 0;
  374. }
  375. static int cap_task_getioprio(struct task_struct *p)
  376. {
  377. return 0;
  378. }
  379. static int cap_task_setrlimit(unsigned int resource, struct rlimit *new_rlim)
  380. {
  381. return 0;
  382. }
  383. static int cap_task_getscheduler(struct task_struct *p)
  384. {
  385. return 0;
  386. }
  387. static int cap_task_movememory(struct task_struct *p)
  388. {
  389. return 0;
  390. }
  391. static int cap_task_wait(struct task_struct *p)
  392. {
  393. return 0;
  394. }
  395. static int cap_task_kill(struct task_struct *p, struct siginfo *info,
  396. int sig, u32 secid)
  397. {
  398. return 0;
  399. }
  400. static void cap_task_to_inode(struct task_struct *p, struct inode *inode)
  401. {
  402. }
  403. static int cap_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
  404. {
  405. return 0;
  406. }
  407. static void cap_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
  408. {
  409. *secid = 0;
  410. }
  411. static int cap_msg_msg_alloc_security(struct msg_msg *msg)
  412. {
  413. return 0;
  414. }
  415. static void cap_msg_msg_free_security(struct msg_msg *msg)
  416. {
  417. }
  418. static int cap_msg_queue_alloc_security(struct msg_queue *msq)
  419. {
  420. return 0;
  421. }
  422. static void cap_msg_queue_free_security(struct msg_queue *msq)
  423. {
  424. }
  425. static int cap_msg_queue_associate(struct msg_queue *msq, int msqflg)
  426. {
  427. return 0;
  428. }
  429. static int cap_msg_queue_msgctl(struct msg_queue *msq, int cmd)
  430. {
  431. return 0;
  432. }
  433. static int cap_msg_queue_msgsnd(struct msg_queue *msq, struct msg_msg *msg,
  434. int msgflg)
  435. {
  436. return 0;
  437. }
  438. static int cap_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
  439. struct task_struct *target, long type, int mode)
  440. {
  441. return 0;
  442. }
  443. static int cap_shm_alloc_security(struct shmid_kernel *shp)
  444. {
  445. return 0;
  446. }
  447. static void cap_shm_free_security(struct shmid_kernel *shp)
  448. {
  449. }
  450. static int cap_shm_associate(struct shmid_kernel *shp, int shmflg)
  451. {
  452. return 0;
  453. }
  454. static int cap_shm_shmctl(struct shmid_kernel *shp, int cmd)
  455. {
  456. return 0;
  457. }
  458. static int cap_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr,
  459. int shmflg)
  460. {
  461. return 0;
  462. }
  463. static int cap_sem_alloc_security(struct sem_array *sma)
  464. {
  465. return 0;
  466. }
  467. static void cap_sem_free_security(struct sem_array *sma)
  468. {
  469. }
  470. static int cap_sem_associate(struct sem_array *sma, int semflg)
  471. {
  472. return 0;
  473. }
  474. static int cap_sem_semctl(struct sem_array *sma, int cmd)
  475. {
  476. return 0;
  477. }
  478. static int cap_sem_semop(struct sem_array *sma, struct sembuf *sops,
  479. unsigned nsops, int alter)
  480. {
  481. return 0;
  482. }
  483. #ifdef CONFIG_SECURITY_NETWORK
  484. static int cap_unix_stream_connect(struct socket *sock, struct socket *other,
  485. struct sock *newsk)
  486. {
  487. return 0;
  488. }
  489. static int cap_unix_may_send(struct socket *sock, struct socket *other)
  490. {
  491. return 0;
  492. }
  493. static int cap_socket_create(int family, int type, int protocol, int kern)
  494. {
  495. return 0;
  496. }
  497. static int cap_socket_post_create(struct socket *sock, int family, int type,
  498. int protocol, int kern)
  499. {
  500. return 0;
  501. }
  502. static int cap_socket_bind(struct socket *sock, struct sockaddr *address,
  503. int addrlen)
  504. {
  505. return 0;
  506. }
  507. static int cap_socket_connect(struct socket *sock, struct sockaddr *address,
  508. int addrlen)
  509. {
  510. return 0;
  511. }
  512. static int cap_socket_listen(struct socket *sock, int backlog)
  513. {
  514. return 0;
  515. }
  516. static int cap_socket_accept(struct socket *sock, struct socket *newsock)
  517. {
  518. return 0;
  519. }
  520. static int cap_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
  521. {
  522. return 0;
  523. }
  524. static int cap_socket_recvmsg(struct socket *sock, struct msghdr *msg,
  525. int size, int flags)
  526. {
  527. return 0;
  528. }
  529. static int cap_socket_getsockname(struct socket *sock)
  530. {
  531. return 0;
  532. }
  533. static int cap_socket_getpeername(struct socket *sock)
  534. {
  535. return 0;
  536. }
  537. static int cap_socket_setsockopt(struct socket *sock, int level, int optname)
  538. {
  539. return 0;
  540. }
  541. static int cap_socket_getsockopt(struct socket *sock, int level, int optname)
  542. {
  543. return 0;
  544. }
  545. static int cap_socket_shutdown(struct socket *sock, int how)
  546. {
  547. return 0;
  548. }
  549. static int cap_socket_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
  550. {
  551. return 0;
  552. }
  553. static int cap_socket_getpeersec_stream(struct socket *sock,
  554. char __user *optval,
  555. int __user *optlen, unsigned len)
  556. {
  557. return -ENOPROTOOPT;
  558. }
  559. static int cap_socket_getpeersec_dgram(struct socket *sock,
  560. struct sk_buff *skb, u32 *secid)
  561. {
  562. return -ENOPROTOOPT;
  563. }
  564. static int cap_sk_alloc_security(struct sock *sk, int family, gfp_t priority)
  565. {
  566. return 0;
  567. }
  568. static void cap_sk_free_security(struct sock *sk)
  569. {
  570. }
  571. static void cap_sk_clone_security(const struct sock *sk, struct sock *newsk)
  572. {
  573. }
  574. static void cap_sk_getsecid(struct sock *sk, u32 *secid)
  575. {
  576. }
  577. static void cap_sock_graft(struct sock *sk, struct socket *parent)
  578. {
  579. }
  580. static int cap_inet_conn_request(struct sock *sk, struct sk_buff *skb,
  581. struct request_sock *req)
  582. {
  583. return 0;
  584. }
  585. static void cap_inet_csk_clone(struct sock *newsk,
  586. const struct request_sock *req)
  587. {
  588. }
  589. static void cap_inet_conn_established(struct sock *sk, struct sk_buff *skb)
  590. {
  591. }
  592. static void cap_req_classify_flow(const struct request_sock *req,
  593. struct flowi *fl)
  594. {
  595. }
  596. static int cap_tun_dev_create(void)
  597. {
  598. return 0;
  599. }
  600. static void cap_tun_dev_post_create(struct sock *sk)
  601. {
  602. }
  603. static int cap_tun_dev_attach(struct sock *sk)
  604. {
  605. return 0;
  606. }
  607. #endif /* CONFIG_SECURITY_NETWORK */
  608. #ifdef CONFIG_SECURITY_NETWORK_XFRM
  609. static int cap_xfrm_policy_alloc_security(struct xfrm_sec_ctx **ctxp,
  610. struct xfrm_user_sec_ctx *sec_ctx)
  611. {
  612. return 0;
  613. }
  614. static int cap_xfrm_policy_clone_security(struct xfrm_sec_ctx *old_ctx,
  615. struct xfrm_sec_ctx **new_ctxp)
  616. {
  617. return 0;
  618. }
  619. static void cap_xfrm_policy_free_security(struct xfrm_sec_ctx *ctx)
  620. {
  621. }
  622. static int cap_xfrm_policy_delete_security(struct xfrm_sec_ctx *ctx)
  623. {
  624. return 0;
  625. }
  626. static int cap_xfrm_state_alloc_security(struct xfrm_state *x,
  627. struct xfrm_user_sec_ctx *sec_ctx,
  628. u32 secid)
  629. {
  630. return 0;
  631. }
  632. static void cap_xfrm_state_free_security(struct xfrm_state *x)
  633. {
  634. }
  635. static int cap_xfrm_state_delete_security(struct xfrm_state *x)
  636. {
  637. return 0;
  638. }
  639. static int cap_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 sk_sid, u8 dir)
  640. {
  641. return 0;
  642. }
  643. static int cap_xfrm_state_pol_flow_match(struct xfrm_state *x,
  644. struct xfrm_policy *xp,
  645. struct flowi *fl)
  646. {
  647. return 1;
  648. }
  649. static int cap_xfrm_decode_session(struct sk_buff *skb, u32 *fl, int ckall)
  650. {
  651. return 0;
  652. }
  653. #endif /* CONFIG_SECURITY_NETWORK_XFRM */
  654. static void cap_d_instantiate(struct dentry *dentry, struct inode *inode)
  655. {
  656. }
  657. static int cap_getprocattr(struct task_struct *p, char *name, char **value)
  658. {
  659. return -EINVAL;
  660. }
  661. static int cap_setprocattr(struct task_struct *p, char *name, void *value,
  662. size_t size)
  663. {
  664. return -EINVAL;
  665. }
  666. static int cap_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
  667. {
  668. return -EOPNOTSUPP;
  669. }
  670. static int cap_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
  671. {
  672. return -EOPNOTSUPP;
  673. }
  674. static void cap_release_secctx(char *secdata, u32 seclen)
  675. {
  676. }
  677. static int cap_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
  678. {
  679. return 0;
  680. }
  681. static int cap_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
  682. {
  683. return 0;
  684. }
  685. static int cap_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
  686. {
  687. return 0;
  688. }
  689. #ifdef CONFIG_KEYS
  690. static int cap_key_alloc(struct key *key, const struct cred *cred,
  691. unsigned long flags)
  692. {
  693. return 0;
  694. }
  695. static void cap_key_free(struct key *key)
  696. {
  697. }
  698. static int cap_key_permission(key_ref_t key_ref, const struct cred *cred,
  699. key_perm_t perm)
  700. {
  701. return 0;
  702. }
  703. static int cap_key_getsecurity(struct key *key, char **_buffer)
  704. {
  705. *_buffer = NULL;
  706. return 0;
  707. }
  708. static int cap_key_session_to_parent(const struct cred *cred,
  709. const struct cred *parent_cred,
  710. struct key *key)
  711. {
  712. return 0;
  713. }
  714. #endif /* CONFIG_KEYS */
  715. #ifdef CONFIG_AUDIT
  716. static int cap_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
  717. {
  718. return 0;
  719. }
  720. static int cap_audit_rule_known(struct audit_krule *krule)
  721. {
  722. return 0;
  723. }
  724. static int cap_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
  725. struct audit_context *actx)
  726. {
  727. return 0;
  728. }
  729. static void cap_audit_rule_free(void *lsmrule)
  730. {
  731. }
  732. #endif /* CONFIG_AUDIT */
  733. struct security_operations default_security_ops = {
  734. .name = "default",
  735. };
  736. #define set_to_cap_if_null(ops, function) \
  737. do { \
  738. if (!ops->function) { \
  739. ops->function = cap_##function; \
  740. pr_debug("Had to override the " #function \
  741. " security operation with the default.\n");\
  742. } \
  743. } while (0)
  744. void security_fixup_ops(struct security_operations *ops)
  745. {
  746. set_to_cap_if_null(ops, ptrace_access_check);
  747. set_to_cap_if_null(ops, ptrace_traceme);
  748. set_to_cap_if_null(ops, capget);
  749. set_to_cap_if_null(ops, capset);
  750. set_to_cap_if_null(ops, acct);
  751. set_to_cap_if_null(ops, capable);
  752. set_to_cap_if_null(ops, quotactl);
  753. set_to_cap_if_null(ops, quota_on);
  754. set_to_cap_if_null(ops, sysctl);
  755. set_to_cap_if_null(ops, syslog);
  756. set_to_cap_if_null(ops, settime);
  757. set_to_cap_if_null(ops, vm_enough_memory);
  758. set_to_cap_if_null(ops, bprm_set_creds);
  759. set_to_cap_if_null(ops, bprm_committing_creds);
  760. set_to_cap_if_null(ops, bprm_committed_creds);
  761. set_to_cap_if_null(ops, bprm_check_security);
  762. set_to_cap_if_null(ops, bprm_secureexec);
  763. set_to_cap_if_null(ops, sb_alloc_security);
  764. set_to_cap_if_null(ops, sb_free_security);
  765. set_to_cap_if_null(ops, sb_copy_data);
  766. set_to_cap_if_null(ops, sb_kern_mount);
  767. set_to_cap_if_null(ops, sb_show_options);
  768. set_to_cap_if_null(ops, sb_statfs);
  769. set_to_cap_if_null(ops, sb_mount);
  770. set_to_cap_if_null(ops, sb_check_sb);
  771. set_to_cap_if_null(ops, sb_umount);
  772. set_to_cap_if_null(ops, sb_umount_close);
  773. set_to_cap_if_null(ops, sb_umount_busy);
  774. set_to_cap_if_null(ops, sb_post_remount);
  775. set_to_cap_if_null(ops, sb_post_addmount);
  776. set_to_cap_if_null(ops, sb_pivotroot);
  777. set_to_cap_if_null(ops, sb_post_pivotroot);
  778. set_to_cap_if_null(ops, sb_set_mnt_opts);
  779. set_to_cap_if_null(ops, sb_clone_mnt_opts);
  780. set_to_cap_if_null(ops, sb_parse_opts_str);
  781. set_to_cap_if_null(ops, inode_alloc_security);
  782. set_to_cap_if_null(ops, inode_free_security);
  783. set_to_cap_if_null(ops, inode_init_security);
  784. set_to_cap_if_null(ops, inode_create);
  785. set_to_cap_if_null(ops, inode_link);
  786. set_to_cap_if_null(ops, inode_unlink);
  787. set_to_cap_if_null(ops, inode_symlink);
  788. set_to_cap_if_null(ops, inode_mkdir);
  789. set_to_cap_if_null(ops, inode_rmdir);
  790. set_to_cap_if_null(ops, inode_mknod);
  791. set_to_cap_if_null(ops, inode_rename);
  792. set_to_cap_if_null(ops, inode_readlink);
  793. set_to_cap_if_null(ops, inode_follow_link);
  794. set_to_cap_if_null(ops, inode_permission);
  795. set_to_cap_if_null(ops, inode_setattr);
  796. set_to_cap_if_null(ops, inode_getattr);
  797. set_to_cap_if_null(ops, inode_delete);
  798. set_to_cap_if_null(ops, inode_setxattr);
  799. set_to_cap_if_null(ops, inode_post_setxattr);
  800. set_to_cap_if_null(ops, inode_getxattr);
  801. set_to_cap_if_null(ops, inode_listxattr);
  802. set_to_cap_if_null(ops, inode_removexattr);
  803. set_to_cap_if_null(ops, inode_need_killpriv);
  804. set_to_cap_if_null(ops, inode_killpriv);
  805. set_to_cap_if_null(ops, inode_getsecurity);
  806. set_to_cap_if_null(ops, inode_setsecurity);
  807. set_to_cap_if_null(ops, inode_listsecurity);
  808. set_to_cap_if_null(ops, inode_getsecid);
  809. #ifdef CONFIG_SECURITY_PATH
  810. set_to_cap_if_null(ops, path_mknod);
  811. set_to_cap_if_null(ops, path_mkdir);
  812. set_to_cap_if_null(ops, path_rmdir);
  813. set_to_cap_if_null(ops, path_unlink);
  814. set_to_cap_if_null(ops, path_symlink);
  815. set_to_cap_if_null(ops, path_link);
  816. set_to_cap_if_null(ops, path_rename);
  817. set_to_cap_if_null(ops, path_truncate);
  818. set_to_cap_if_null(ops, path_chmod);
  819. set_to_cap_if_null(ops, path_chown);
  820. set_to_cap_if_null(ops, path_chroot);
  821. #endif
  822. set_to_cap_if_null(ops, file_permission);
  823. set_to_cap_if_null(ops, file_alloc_security);
  824. set_to_cap_if_null(ops, file_free_security);
  825. set_to_cap_if_null(ops, file_ioctl);
  826. set_to_cap_if_null(ops, file_mmap);
  827. set_to_cap_if_null(ops, file_mprotect);
  828. set_to_cap_if_null(ops, file_lock);
  829. set_to_cap_if_null(ops, file_fcntl);
  830. set_to_cap_if_null(ops, file_set_fowner);
  831. set_to_cap_if_null(ops, file_send_sigiotask);
  832. set_to_cap_if_null(ops, file_receive);
  833. set_to_cap_if_null(ops, dentry_open);
  834. set_to_cap_if_null(ops, task_create);
  835. set_to_cap_if_null(ops, cred_alloc_blank);
  836. set_to_cap_if_null(ops, cred_free);
  837. set_to_cap_if_null(ops, cred_prepare);
  838. set_to_cap_if_null(ops, cred_commit);
  839. set_to_cap_if_null(ops, cred_transfer);
  840. set_to_cap_if_null(ops, kernel_act_as);
  841. set_to_cap_if_null(ops, kernel_create_files_as);
  842. set_to_cap_if_null(ops, kernel_module_request);
  843. set_to_cap_if_null(ops, task_setuid);
  844. set_to_cap_if_null(ops, task_fix_setuid);
  845. set_to_cap_if_null(ops, task_setgid);
  846. set_to_cap_if_null(ops, task_setpgid);
  847. set_to_cap_if_null(ops, task_getpgid);
  848. set_to_cap_if_null(ops, task_getsid);
  849. set_to_cap_if_null(ops, task_getsecid);
  850. set_to_cap_if_null(ops, task_setgroups);
  851. set_to_cap_if_null(ops, task_setnice);
  852. set_to_cap_if_null(ops, task_setioprio);
  853. set_to_cap_if_null(ops, task_getioprio);
  854. set_to_cap_if_null(ops, task_setrlimit);
  855. set_to_cap_if_null(ops, task_setscheduler);
  856. set_to_cap_if_null(ops, task_getscheduler);
  857. set_to_cap_if_null(ops, task_movememory);
  858. set_to_cap_if_null(ops, task_wait);
  859. set_to_cap_if_null(ops, task_kill);
  860. set_to_cap_if_null(ops, task_prctl);
  861. set_to_cap_if_null(ops, task_to_inode);
  862. set_to_cap_if_null(ops, ipc_permission);
  863. set_to_cap_if_null(ops, ipc_getsecid);
  864. set_to_cap_if_null(ops, msg_msg_alloc_security);
  865. set_to_cap_if_null(ops, msg_msg_free_security);
  866. set_to_cap_if_null(ops, msg_queue_alloc_security);
  867. set_to_cap_if_null(ops, msg_queue_free_security);
  868. set_to_cap_if_null(ops, msg_queue_associate);
  869. set_to_cap_if_null(ops, msg_queue_msgctl);
  870. set_to_cap_if_null(ops, msg_queue_msgsnd);
  871. set_to_cap_if_null(ops, msg_queue_msgrcv);
  872. set_to_cap_if_null(ops, shm_alloc_security);
  873. set_to_cap_if_null(ops, shm_free_security);
  874. set_to_cap_if_null(ops, shm_associate);
  875. set_to_cap_if_null(ops, shm_shmctl);
  876. set_to_cap_if_null(ops, shm_shmat);
  877. set_to_cap_if_null(ops, sem_alloc_security);
  878. set_to_cap_if_null(ops, sem_free_security);
  879. set_to_cap_if_null(ops, sem_associate);
  880. set_to_cap_if_null(ops, sem_semctl);
  881. set_to_cap_if_null(ops, sem_semop);
  882. set_to_cap_if_null(ops, netlink_send);
  883. set_to_cap_if_null(ops, netlink_recv);
  884. set_to_cap_if_null(ops, d_instantiate);
  885. set_to_cap_if_null(ops, getprocattr);
  886. set_to_cap_if_null(ops, setprocattr);
  887. set_to_cap_if_null(ops, secid_to_secctx);
  888. set_to_cap_if_null(ops, secctx_to_secid);
  889. set_to_cap_if_null(ops, release_secctx);
  890. set_to_cap_if_null(ops, inode_notifysecctx);
  891. set_to_cap_if_null(ops, inode_setsecctx);
  892. set_to_cap_if_null(ops, inode_getsecctx);
  893. #ifdef CONFIG_SECURITY_NETWORK
  894. set_to_cap_if_null(ops, unix_stream_connect);
  895. set_to_cap_if_null(ops, unix_may_send);
  896. set_to_cap_if_null(ops, socket_create);
  897. set_to_cap_if_null(ops, socket_post_create);
  898. set_to_cap_if_null(ops, socket_bind);
  899. set_to_cap_if_null(ops, socket_connect);
  900. set_to_cap_if_null(ops, socket_listen);
  901. set_to_cap_if_null(ops, socket_accept);
  902. set_to_cap_if_null(ops, socket_sendmsg);
  903. set_to_cap_if_null(ops, socket_recvmsg);
  904. set_to_cap_if_null(ops, socket_getsockname);
  905. set_to_cap_if_null(ops, socket_getpeername);
  906. set_to_cap_if_null(ops, socket_setsockopt);
  907. set_to_cap_if_null(ops, socket_getsockopt);
  908. set_to_cap_if_null(ops, socket_shutdown);
  909. set_to_cap_if_null(ops, socket_sock_rcv_skb);
  910. set_to_cap_if_null(ops, socket_getpeersec_stream);
  911. set_to_cap_if_null(ops, socket_getpeersec_dgram);
  912. set_to_cap_if_null(ops, sk_alloc_security);
  913. set_to_cap_if_null(ops, sk_free_security);
  914. set_to_cap_if_null(ops, sk_clone_security);
  915. set_to_cap_if_null(ops, sk_getsecid);
  916. set_to_cap_if_null(ops, sock_graft);
  917. set_to_cap_if_null(ops, inet_conn_request);
  918. set_to_cap_if_null(ops, inet_csk_clone);
  919. set_to_cap_if_null(ops, inet_conn_established);
  920. set_to_cap_if_null(ops, req_classify_flow);
  921. set_to_cap_if_null(ops, tun_dev_create);
  922. set_to_cap_if_null(ops, tun_dev_post_create);
  923. set_to_cap_if_null(ops, tun_dev_attach);
  924. #endif /* CONFIG_SECURITY_NETWORK */
  925. #ifdef CONFIG_SECURITY_NETWORK_XFRM
  926. set_to_cap_if_null(ops, xfrm_policy_alloc_security);
  927. set_to_cap_if_null(ops, xfrm_policy_clone_security);
  928. set_to_cap_if_null(ops, xfrm_policy_free_security);
  929. set_to_cap_if_null(ops, xfrm_policy_delete_security);
  930. set_to_cap_if_null(ops, xfrm_state_alloc_security);
  931. set_to_cap_if_null(ops, xfrm_state_free_security);
  932. set_to_cap_if_null(ops, xfrm_state_delete_security);
  933. set_to_cap_if_null(ops, xfrm_policy_lookup);
  934. set_to_cap_if_null(ops, xfrm_state_pol_flow_match);
  935. set_to_cap_if_null(ops, xfrm_decode_session);
  936. #endif /* CONFIG_SECURITY_NETWORK_XFRM */
  937. #ifdef CONFIG_KEYS
  938. set_to_cap_if_null(ops, key_alloc);
  939. set_to_cap_if_null(ops, key_free);
  940. set_to_cap_if_null(ops, key_permission);
  941. set_to_cap_if_null(ops, key_getsecurity);
  942. set_to_cap_if_null(ops, key_session_to_parent);
  943. #endif /* CONFIG_KEYS */
  944. #ifdef CONFIG_AUDIT
  945. set_to_cap_if_null(ops, audit_rule_init);
  946. set_to_cap_if_null(ops, audit_rule_known);
  947. set_to_cap_if_null(ops, audit_rule_match);
  948. set_to_cap_if_null(ops, audit_rule_free);
  949. #endif
  950. }