dummy.c 24 KB

12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091929394959697989910010110210310410510610710810911011111211311411511611711811912012112212312412512612712812913013113213313413513613713813914014114214314414514614714814915015115215315415515615715815916016116216316416516616716816917017117217317417517617717817918018118218318418518618718818919019119219319419519619719819920020120220320420520620720820921021121221321421521621721821922022122222322422522622722822923023123223323423523623723823924024124224324424524624724824925025125225325425525625725825926026126226326426526626726826927027127227327427527627727827928028128228328428528628728828929029129229329429529629729829930030130230330430530630730830931031131231331431531631731831932032132232332432532632732832933033133233333433533633733833934034134234334434534634734834935035135235335435535635735835936036136236336436536636736836937037137237337437537637737837938038138238338438538638738838939039139239339439539639739839940040140240340440540640740840941041141241341441541641741841942042142242342442542642742842943043143243343443543643743843944044144244344444544644744844945045145245345445545645745845946046146246346446546646746846947047147247347447547647747847948048148248348448548648748848949049149249349449549649749849950050150250350450550650750850951051151251351451551651751851952052152252352452552652752852953053153253353453553653753853954054154254354454554654754854955055155255355455555655755855956056156256356456556656756856957057157257357457557657757857958058158258358458558658758858959059159259359459559659759859960060160260360460560660760860961061161261361461561661761861962062162262362462562662762862963063163263363463563663763863964064164264364464564664764864965065165265365465565665765865966066166266366466566666766866967067167267367467567667767867968068168268368468568668768868969069169269369469569669769869970070170270370470570670770870971071171271371471571671771871972072172272372472572672772872973073173273373473573673773873974074174274374474574674774874975075175275375475575675775875976076176276376476576676776876977077177277377477577677777877978078178278378478578678778878979079179279379479579679779879980080180280380480580680780880981081181281381481581681781881982082182282382482582682782882983083183283383483583683783883984084184284384484584684784884985085185285385485585685785885986086186286386486586686786886987087187287387487587687787887988088188288388488588688788888989089189289389489589689789889990090190290390490590690790890991091191291391491591691791891992092192292392492592692792892993093193293393493593693793893994094194294394494594694794894995095195295395495595695795895996096196296396496596696796896997097197297397497597697797897998098198298398498598698798898999099199299399499599699799899910001001100210031004100510061007100810091010101110121013101410151016101710181019102010211022102310241025102610271028102910301031103210331034103510361037103810391040104110421043104410451046104710481049105010511052105310541055105610571058105910601061106210631064106510661067106810691070107110721073
  1. /*
  2. * Stub functions for the default security function pointers in case no
  3. * security model is loaded.
  4. *
  5. * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
  6. * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
  7. * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
  8. *
  9. * This program is free software; you can redistribute it and/or modify
  10. * it under the terms of the GNU General Public License as published by
  11. * the Free Software Foundation; either version 2 of the License, or
  12. * (at your option) any later version.
  13. */
  14. #undef DEBUG
  15. #include <linux/capability.h>
  16. #include <linux/config.h>
  17. #include <linux/module.h>
  18. #include <linux/kernel.h>
  19. #include <linux/mman.h>
  20. #include <linux/pagemap.h>
  21. #include <linux/swap.h>
  22. #include <linux/security.h>
  23. #include <linux/skbuff.h>
  24. #include <linux/netlink.h>
  25. #include <net/sock.h>
  26. #include <linux/xattr.h>
  27. #include <linux/hugetlb.h>
  28. #include <linux/ptrace.h>
  29. #include <linux/file.h>
  30. static int dummy_ptrace (struct task_struct *parent, struct task_struct *child)
  31. {
  32. return 0;
  33. }
  34. static int dummy_capget (struct task_struct *target, kernel_cap_t * effective,
  35. kernel_cap_t * inheritable, kernel_cap_t * permitted)
  36. {
  37. *effective = *inheritable = *permitted = 0;
  38. if (!issecure(SECURE_NOROOT)) {
  39. if (target->euid == 0) {
  40. *permitted |= (~0 & ~CAP_FS_MASK);
  41. *effective |= (~0 & ~CAP_TO_MASK(CAP_SETPCAP) & ~CAP_FS_MASK);
  42. }
  43. if (target->fsuid == 0) {
  44. *permitted |= CAP_FS_MASK;
  45. *effective |= CAP_FS_MASK;
  46. }
  47. }
  48. return 0;
  49. }
  50. static int dummy_capset_check (struct task_struct *target,
  51. kernel_cap_t * effective,
  52. kernel_cap_t * inheritable,
  53. kernel_cap_t * permitted)
  54. {
  55. return -EPERM;
  56. }
  57. static void dummy_capset_set (struct task_struct *target,
  58. kernel_cap_t * effective,
  59. kernel_cap_t * inheritable,
  60. kernel_cap_t * permitted)
  61. {
  62. return;
  63. }
  64. static int dummy_acct (struct file *file)
  65. {
  66. return 0;
  67. }
  68. static int dummy_capable (struct task_struct *tsk, int cap)
  69. {
  70. if (cap_raised (tsk->cap_effective, cap))
  71. return 0;
  72. return -EPERM;
  73. }
  74. static int dummy_sysctl (ctl_table * table, int op)
  75. {
  76. return 0;
  77. }
  78. static int dummy_quotactl (int cmds, int type, int id, struct super_block *sb)
  79. {
  80. return 0;
  81. }
  82. static int dummy_quota_on (struct dentry *dentry)
  83. {
  84. return 0;
  85. }
  86. static int dummy_syslog (int type)
  87. {
  88. if ((type != 3 && type != 10) && current->euid)
  89. return -EPERM;
  90. return 0;
  91. }
  92. static int dummy_settime(struct timespec *ts, struct timezone *tz)
  93. {
  94. if (!capable(CAP_SYS_TIME))
  95. return -EPERM;
  96. return 0;
  97. }
  98. static int dummy_vm_enough_memory(long pages)
  99. {
  100. int cap_sys_admin = 0;
  101. if (dummy_capable(current, CAP_SYS_ADMIN) == 0)
  102. cap_sys_admin = 1;
  103. return __vm_enough_memory(pages, cap_sys_admin);
  104. }
  105. static int dummy_bprm_alloc_security (struct linux_binprm *bprm)
  106. {
  107. return 0;
  108. }
  109. static void dummy_bprm_free_security (struct linux_binprm *bprm)
  110. {
  111. return;
  112. }
  113. static void dummy_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
  114. {
  115. if (bprm->e_uid != current->uid || bprm->e_gid != current->gid) {
  116. current->mm->dumpable = suid_dumpable;
  117. if ((unsafe & ~LSM_UNSAFE_PTRACE_CAP) && !capable(CAP_SETUID)) {
  118. bprm->e_uid = current->uid;
  119. bprm->e_gid = current->gid;
  120. }
  121. }
  122. current->suid = current->euid = current->fsuid = bprm->e_uid;
  123. current->sgid = current->egid = current->fsgid = bprm->e_gid;
  124. dummy_capget(current, &current->cap_effective, &current->cap_inheritable, &current->cap_permitted);
  125. }
  126. static void dummy_bprm_post_apply_creds (struct linux_binprm *bprm)
  127. {
  128. return;
  129. }
  130. static int dummy_bprm_set_security (struct linux_binprm *bprm)
  131. {
  132. return 0;
  133. }
  134. static int dummy_bprm_check_security (struct linux_binprm *bprm)
  135. {
  136. return 0;
  137. }
  138. static int dummy_bprm_secureexec (struct linux_binprm *bprm)
  139. {
  140. /* The new userland will simply use the value provided
  141. in the AT_SECURE field to decide whether secure mode
  142. is required. Hence, this logic is required to preserve
  143. the legacy decision algorithm used by the old userland. */
  144. return (current->euid != current->uid ||
  145. current->egid != current->gid);
  146. }
  147. static int dummy_sb_alloc_security (struct super_block *sb)
  148. {
  149. return 0;
  150. }
  151. static void dummy_sb_free_security (struct super_block *sb)
  152. {
  153. return;
  154. }
  155. static int dummy_sb_copy_data (struct file_system_type *type,
  156. void *orig, void *copy)
  157. {
  158. return 0;
  159. }
  160. static int dummy_sb_kern_mount (struct super_block *sb, void *data)
  161. {
  162. return 0;
  163. }
  164. static int dummy_sb_statfs (struct dentry *dentry)
  165. {
  166. return 0;
  167. }
  168. static int dummy_sb_mount (char *dev_name, struct nameidata *nd, char *type,
  169. unsigned long flags, void *data)
  170. {
  171. return 0;
  172. }
  173. static int dummy_sb_check_sb (struct vfsmount *mnt, struct nameidata *nd)
  174. {
  175. return 0;
  176. }
  177. static int dummy_sb_umount (struct vfsmount *mnt, int flags)
  178. {
  179. return 0;
  180. }
  181. static void dummy_sb_umount_close (struct vfsmount *mnt)
  182. {
  183. return;
  184. }
  185. static void dummy_sb_umount_busy (struct vfsmount *mnt)
  186. {
  187. return;
  188. }
  189. static void dummy_sb_post_remount (struct vfsmount *mnt, unsigned long flags,
  190. void *data)
  191. {
  192. return;
  193. }
  194. static void dummy_sb_post_mountroot (void)
  195. {
  196. return;
  197. }
  198. static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd)
  199. {
  200. return;
  201. }
  202. static int dummy_sb_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
  203. {
  204. return 0;
  205. }
  206. static void dummy_sb_post_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
  207. {
  208. return;
  209. }
  210. static int dummy_inode_alloc_security (struct inode *inode)
  211. {
  212. return 0;
  213. }
  214. static void dummy_inode_free_security (struct inode *inode)
  215. {
  216. return;
  217. }
  218. static int dummy_inode_init_security (struct inode *inode, struct inode *dir,
  219. char **name, void **value, size_t *len)
  220. {
  221. return -EOPNOTSUPP;
  222. }
  223. static int dummy_inode_create (struct inode *inode, struct dentry *dentry,
  224. int mask)
  225. {
  226. return 0;
  227. }
  228. static int dummy_inode_link (struct dentry *old_dentry, struct inode *inode,
  229. struct dentry *new_dentry)
  230. {
  231. return 0;
  232. }
  233. static int dummy_inode_unlink (struct inode *inode, struct dentry *dentry)
  234. {
  235. return 0;
  236. }
  237. static int dummy_inode_symlink (struct inode *inode, struct dentry *dentry,
  238. const char *name)
  239. {
  240. return 0;
  241. }
  242. static int dummy_inode_mkdir (struct inode *inode, struct dentry *dentry,
  243. int mask)
  244. {
  245. return 0;
  246. }
  247. static int dummy_inode_rmdir (struct inode *inode, struct dentry *dentry)
  248. {
  249. return 0;
  250. }
  251. static int dummy_inode_mknod (struct inode *inode, struct dentry *dentry,
  252. int mode, dev_t dev)
  253. {
  254. return 0;
  255. }
  256. static int dummy_inode_rename (struct inode *old_inode,
  257. struct dentry *old_dentry,
  258. struct inode *new_inode,
  259. struct dentry *new_dentry)
  260. {
  261. return 0;
  262. }
  263. static int dummy_inode_readlink (struct dentry *dentry)
  264. {
  265. return 0;
  266. }
  267. static int dummy_inode_follow_link (struct dentry *dentry,
  268. struct nameidata *nameidata)
  269. {
  270. return 0;
  271. }
  272. static int dummy_inode_permission (struct inode *inode, int mask, struct nameidata *nd)
  273. {
  274. return 0;
  275. }
  276. static int dummy_inode_setattr (struct dentry *dentry, struct iattr *iattr)
  277. {
  278. return 0;
  279. }
  280. static int dummy_inode_getattr (struct vfsmount *mnt, struct dentry *dentry)
  281. {
  282. return 0;
  283. }
  284. static void dummy_inode_delete (struct inode *ino)
  285. {
  286. return;
  287. }
  288. static int dummy_inode_setxattr (struct dentry *dentry, char *name, void *value,
  289. size_t size, int flags)
  290. {
  291. if (!strncmp(name, XATTR_SECURITY_PREFIX,
  292. sizeof(XATTR_SECURITY_PREFIX) - 1) &&
  293. !capable(CAP_SYS_ADMIN))
  294. return -EPERM;
  295. return 0;
  296. }
  297. static void dummy_inode_post_setxattr (struct dentry *dentry, char *name, void *value,
  298. size_t size, int flags)
  299. {
  300. }
  301. static int dummy_inode_getxattr (struct dentry *dentry, char *name)
  302. {
  303. return 0;
  304. }
  305. static int dummy_inode_listxattr (struct dentry *dentry)
  306. {
  307. return 0;
  308. }
  309. static int dummy_inode_removexattr (struct dentry *dentry, char *name)
  310. {
  311. if (!strncmp(name, XATTR_SECURITY_PREFIX,
  312. sizeof(XATTR_SECURITY_PREFIX) - 1) &&
  313. !capable(CAP_SYS_ADMIN))
  314. return -EPERM;
  315. return 0;
  316. }
  317. static int dummy_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err)
  318. {
  319. return -EOPNOTSUPP;
  320. }
  321. static int dummy_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
  322. {
  323. return -EOPNOTSUPP;
  324. }
  325. static int dummy_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
  326. {
  327. return 0;
  328. }
  329. static const char *dummy_inode_xattr_getsuffix(void)
  330. {
  331. return NULL;
  332. }
  333. static int dummy_file_permission (struct file *file, int mask)
  334. {
  335. return 0;
  336. }
  337. static int dummy_file_alloc_security (struct file *file)
  338. {
  339. return 0;
  340. }
  341. static void dummy_file_free_security (struct file *file)
  342. {
  343. return;
  344. }
  345. static int dummy_file_ioctl (struct file *file, unsigned int command,
  346. unsigned long arg)
  347. {
  348. return 0;
  349. }
  350. static int dummy_file_mmap (struct file *file, unsigned long reqprot,
  351. unsigned long prot,
  352. unsigned long flags)
  353. {
  354. return 0;
  355. }
  356. static int dummy_file_mprotect (struct vm_area_struct *vma,
  357. unsigned long reqprot,
  358. unsigned long prot)
  359. {
  360. return 0;
  361. }
  362. static int dummy_file_lock (struct file *file, unsigned int cmd)
  363. {
  364. return 0;
  365. }
  366. static int dummy_file_fcntl (struct file *file, unsigned int cmd,
  367. unsigned long arg)
  368. {
  369. return 0;
  370. }
  371. static int dummy_file_set_fowner (struct file *file)
  372. {
  373. return 0;
  374. }
  375. static int dummy_file_send_sigiotask (struct task_struct *tsk,
  376. struct fown_struct *fown, int sig)
  377. {
  378. return 0;
  379. }
  380. static int dummy_file_receive (struct file *file)
  381. {
  382. return 0;
  383. }
  384. static int dummy_task_create (unsigned long clone_flags)
  385. {
  386. return 0;
  387. }
  388. static int dummy_task_alloc_security (struct task_struct *p)
  389. {
  390. return 0;
  391. }
  392. static void dummy_task_free_security (struct task_struct *p)
  393. {
  394. return;
  395. }
  396. static int dummy_task_setuid (uid_t id0, uid_t id1, uid_t id2, int flags)
  397. {
  398. return 0;
  399. }
  400. static int dummy_task_post_setuid (uid_t id0, uid_t id1, uid_t id2, int flags)
  401. {
  402. dummy_capget(current, &current->cap_effective, &current->cap_inheritable, &current->cap_permitted);
  403. return 0;
  404. }
  405. static int dummy_task_setgid (gid_t id0, gid_t id1, gid_t id2, int flags)
  406. {
  407. return 0;
  408. }
  409. static int dummy_task_setpgid (struct task_struct *p, pid_t pgid)
  410. {
  411. return 0;
  412. }
  413. static int dummy_task_getpgid (struct task_struct *p)
  414. {
  415. return 0;
  416. }
  417. static int dummy_task_getsid (struct task_struct *p)
  418. {
  419. return 0;
  420. }
  421. static void dummy_task_getsecid (struct task_struct *p, u32 *secid)
  422. { }
  423. static int dummy_task_setgroups (struct group_info *group_info)
  424. {
  425. return 0;
  426. }
  427. static int dummy_task_setnice (struct task_struct *p, int nice)
  428. {
  429. return 0;
  430. }
  431. static int dummy_task_setioprio (struct task_struct *p, int ioprio)
  432. {
  433. return 0;
  434. }
  435. static int dummy_task_getioprio (struct task_struct *p)
  436. {
  437. return 0;
  438. }
  439. static int dummy_task_setrlimit (unsigned int resource, struct rlimit *new_rlim)
  440. {
  441. return 0;
  442. }
  443. static int dummy_task_setscheduler (struct task_struct *p, int policy,
  444. struct sched_param *lp)
  445. {
  446. return 0;
  447. }
  448. static int dummy_task_getscheduler (struct task_struct *p)
  449. {
  450. return 0;
  451. }
  452. static int dummy_task_movememory (struct task_struct *p)
  453. {
  454. return 0;
  455. }
  456. static int dummy_task_wait (struct task_struct *p)
  457. {
  458. return 0;
  459. }
  460. static int dummy_task_kill (struct task_struct *p, struct siginfo *info,
  461. int sig, u32 secid)
  462. {
  463. return 0;
  464. }
  465. static int dummy_task_prctl (int option, unsigned long arg2, unsigned long arg3,
  466. unsigned long arg4, unsigned long arg5)
  467. {
  468. return 0;
  469. }
  470. static void dummy_task_reparent_to_init (struct task_struct *p)
  471. {
  472. p->euid = p->fsuid = 0;
  473. return;
  474. }
  475. static void dummy_task_to_inode(struct task_struct *p, struct inode *inode)
  476. { }
  477. static int dummy_ipc_permission (struct kern_ipc_perm *ipcp, short flag)
  478. {
  479. return 0;
  480. }
  481. static int dummy_msg_msg_alloc_security (struct msg_msg *msg)
  482. {
  483. return 0;
  484. }
  485. static void dummy_msg_msg_free_security (struct msg_msg *msg)
  486. {
  487. return;
  488. }
  489. static int dummy_msg_queue_alloc_security (struct msg_queue *msq)
  490. {
  491. return 0;
  492. }
  493. static void dummy_msg_queue_free_security (struct msg_queue *msq)
  494. {
  495. return;
  496. }
  497. static int dummy_msg_queue_associate (struct msg_queue *msq,
  498. int msqflg)
  499. {
  500. return 0;
  501. }
  502. static int dummy_msg_queue_msgctl (struct msg_queue *msq, int cmd)
  503. {
  504. return 0;
  505. }
  506. static int dummy_msg_queue_msgsnd (struct msg_queue *msq, struct msg_msg *msg,
  507. int msgflg)
  508. {
  509. return 0;
  510. }
  511. static int dummy_msg_queue_msgrcv (struct msg_queue *msq, struct msg_msg *msg,
  512. struct task_struct *target, long type,
  513. int mode)
  514. {
  515. return 0;
  516. }
  517. static int dummy_shm_alloc_security (struct shmid_kernel *shp)
  518. {
  519. return 0;
  520. }
  521. static void dummy_shm_free_security (struct shmid_kernel *shp)
  522. {
  523. return;
  524. }
  525. static int dummy_shm_associate (struct shmid_kernel *shp, int shmflg)
  526. {
  527. return 0;
  528. }
  529. static int dummy_shm_shmctl (struct shmid_kernel *shp, int cmd)
  530. {
  531. return 0;
  532. }
  533. static int dummy_shm_shmat (struct shmid_kernel *shp, char __user *shmaddr,
  534. int shmflg)
  535. {
  536. return 0;
  537. }
  538. static int dummy_sem_alloc_security (struct sem_array *sma)
  539. {
  540. return 0;
  541. }
  542. static void dummy_sem_free_security (struct sem_array *sma)
  543. {
  544. return;
  545. }
  546. static int dummy_sem_associate (struct sem_array *sma, int semflg)
  547. {
  548. return 0;
  549. }
  550. static int dummy_sem_semctl (struct sem_array *sma, int cmd)
  551. {
  552. return 0;
  553. }
  554. static int dummy_sem_semop (struct sem_array *sma,
  555. struct sembuf *sops, unsigned nsops, int alter)
  556. {
  557. return 0;
  558. }
  559. static int dummy_netlink_send (struct sock *sk, struct sk_buff *skb)
  560. {
  561. NETLINK_CB(skb).eff_cap = current->cap_effective;
  562. return 0;
  563. }
  564. static int dummy_netlink_recv (struct sk_buff *skb, int cap)
  565. {
  566. if (!cap_raised (NETLINK_CB (skb).eff_cap, cap))
  567. return -EPERM;
  568. return 0;
  569. }
  570. #ifdef CONFIG_SECURITY_NETWORK
  571. static int dummy_unix_stream_connect (struct socket *sock,
  572. struct socket *other,
  573. struct sock *newsk)
  574. {
  575. return 0;
  576. }
  577. static int dummy_unix_may_send (struct socket *sock,
  578. struct socket *other)
  579. {
  580. return 0;
  581. }
  582. static int dummy_socket_create (int family, int type,
  583. int protocol, int kern)
  584. {
  585. return 0;
  586. }
  587. static void dummy_socket_post_create (struct socket *sock, int family, int type,
  588. int protocol, int kern)
  589. {
  590. return;
  591. }
  592. static int dummy_socket_bind (struct socket *sock, struct sockaddr *address,
  593. int addrlen)
  594. {
  595. return 0;
  596. }
  597. static int dummy_socket_connect (struct socket *sock, struct sockaddr *address,
  598. int addrlen)
  599. {
  600. return 0;
  601. }
  602. static int dummy_socket_listen (struct socket *sock, int backlog)
  603. {
  604. return 0;
  605. }
  606. static int dummy_socket_accept (struct socket *sock, struct socket *newsock)
  607. {
  608. return 0;
  609. }
  610. static void dummy_socket_post_accept (struct socket *sock,
  611. struct socket *newsock)
  612. {
  613. return;
  614. }
  615. static int dummy_socket_sendmsg (struct socket *sock, struct msghdr *msg,
  616. int size)
  617. {
  618. return 0;
  619. }
  620. static int dummy_socket_recvmsg (struct socket *sock, struct msghdr *msg,
  621. int size, int flags)
  622. {
  623. return 0;
  624. }
  625. static int dummy_socket_getsockname (struct socket *sock)
  626. {
  627. return 0;
  628. }
  629. static int dummy_socket_getpeername (struct socket *sock)
  630. {
  631. return 0;
  632. }
  633. static int dummy_socket_setsockopt (struct socket *sock, int level, int optname)
  634. {
  635. return 0;
  636. }
  637. static int dummy_socket_getsockopt (struct socket *sock, int level, int optname)
  638. {
  639. return 0;
  640. }
  641. static int dummy_socket_shutdown (struct socket *sock, int how)
  642. {
  643. return 0;
  644. }
  645. static int dummy_socket_sock_rcv_skb (struct sock *sk, struct sk_buff *skb)
  646. {
  647. return 0;
  648. }
  649. static int dummy_socket_getpeersec_stream(struct socket *sock, char __user *optval,
  650. int __user *optlen, unsigned len)
  651. {
  652. return -ENOPROTOOPT;
  653. }
  654. static int dummy_socket_getpeersec_dgram(struct sk_buff *skb, char **secdata,
  655. u32 *seclen)
  656. {
  657. return -ENOPROTOOPT;
  658. }
  659. static inline int dummy_sk_alloc_security (struct sock *sk, int family, gfp_t priority)
  660. {
  661. return 0;
  662. }
  663. static inline void dummy_sk_free_security (struct sock *sk)
  664. {
  665. }
  666. static unsigned int dummy_sk_getsid(struct sock *sk, struct flowi *fl, u8 dir)
  667. {
  668. return 0;
  669. }
  670. #endif /* CONFIG_SECURITY_NETWORK */
  671. #ifdef CONFIG_SECURITY_NETWORK_XFRM
  672. static int dummy_xfrm_policy_alloc_security(struct xfrm_policy *xp, struct xfrm_user_sec_ctx *sec_ctx)
  673. {
  674. return 0;
  675. }
  676. static inline int dummy_xfrm_policy_clone_security(struct xfrm_policy *old, struct xfrm_policy *new)
  677. {
  678. return 0;
  679. }
  680. static void dummy_xfrm_policy_free_security(struct xfrm_policy *xp)
  681. {
  682. }
  683. static int dummy_xfrm_policy_delete_security(struct xfrm_policy *xp)
  684. {
  685. return 0;
  686. }
  687. static int dummy_xfrm_state_alloc_security(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
  688. {
  689. return 0;
  690. }
  691. static void dummy_xfrm_state_free_security(struct xfrm_state *x)
  692. {
  693. }
  694. static int dummy_xfrm_state_delete_security(struct xfrm_state *x)
  695. {
  696. return 0;
  697. }
  698. static int dummy_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir)
  699. {
  700. return 0;
  701. }
  702. #endif /* CONFIG_SECURITY_NETWORK_XFRM */
  703. static int dummy_register_security (const char *name, struct security_operations *ops)
  704. {
  705. return -EINVAL;
  706. }
  707. static int dummy_unregister_security (const char *name, struct security_operations *ops)
  708. {
  709. return -EINVAL;
  710. }
  711. static void dummy_d_instantiate (struct dentry *dentry, struct inode *inode)
  712. {
  713. return;
  714. }
  715. static int dummy_getprocattr(struct task_struct *p, char *name, void *value, size_t size)
  716. {
  717. return -EINVAL;
  718. }
  719. static int dummy_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
  720. {
  721. return -EINVAL;
  722. }
  723. #ifdef CONFIG_KEYS
  724. static inline int dummy_key_alloc(struct key *key, struct task_struct *ctx,
  725. unsigned long flags)
  726. {
  727. return 0;
  728. }
  729. static inline void dummy_key_free(struct key *key)
  730. {
  731. }
  732. static inline int dummy_key_permission(key_ref_t key_ref,
  733. struct task_struct *context,
  734. key_perm_t perm)
  735. {
  736. return 0;
  737. }
  738. #endif /* CONFIG_KEYS */
  739. struct security_operations dummy_security_ops;
  740. #define set_to_dummy_if_null(ops, function) \
  741. do { \
  742. if (!ops->function) { \
  743. ops->function = dummy_##function; \
  744. pr_debug("Had to override the " #function \
  745. " security operation with the dummy one.\n");\
  746. } \
  747. } while (0)
  748. void security_fixup_ops (struct security_operations *ops)
  749. {
  750. set_to_dummy_if_null(ops, ptrace);
  751. set_to_dummy_if_null(ops, capget);
  752. set_to_dummy_if_null(ops, capset_check);
  753. set_to_dummy_if_null(ops, capset_set);
  754. set_to_dummy_if_null(ops, acct);
  755. set_to_dummy_if_null(ops, capable);
  756. set_to_dummy_if_null(ops, quotactl);
  757. set_to_dummy_if_null(ops, quota_on);
  758. set_to_dummy_if_null(ops, sysctl);
  759. set_to_dummy_if_null(ops, syslog);
  760. set_to_dummy_if_null(ops, settime);
  761. set_to_dummy_if_null(ops, vm_enough_memory);
  762. set_to_dummy_if_null(ops, bprm_alloc_security);
  763. set_to_dummy_if_null(ops, bprm_free_security);
  764. set_to_dummy_if_null(ops, bprm_apply_creds);
  765. set_to_dummy_if_null(ops, bprm_post_apply_creds);
  766. set_to_dummy_if_null(ops, bprm_set_security);
  767. set_to_dummy_if_null(ops, bprm_check_security);
  768. set_to_dummy_if_null(ops, bprm_secureexec);
  769. set_to_dummy_if_null(ops, sb_alloc_security);
  770. set_to_dummy_if_null(ops, sb_free_security);
  771. set_to_dummy_if_null(ops, sb_copy_data);
  772. set_to_dummy_if_null(ops, sb_kern_mount);
  773. set_to_dummy_if_null(ops, sb_statfs);
  774. set_to_dummy_if_null(ops, sb_mount);
  775. set_to_dummy_if_null(ops, sb_check_sb);
  776. set_to_dummy_if_null(ops, sb_umount);
  777. set_to_dummy_if_null(ops, sb_umount_close);
  778. set_to_dummy_if_null(ops, sb_umount_busy);
  779. set_to_dummy_if_null(ops, sb_post_remount);
  780. set_to_dummy_if_null(ops, sb_post_mountroot);
  781. set_to_dummy_if_null(ops, sb_post_addmount);
  782. set_to_dummy_if_null(ops, sb_pivotroot);
  783. set_to_dummy_if_null(ops, sb_post_pivotroot);
  784. set_to_dummy_if_null(ops, inode_alloc_security);
  785. set_to_dummy_if_null(ops, inode_free_security);
  786. set_to_dummy_if_null(ops, inode_init_security);
  787. set_to_dummy_if_null(ops, inode_create);
  788. set_to_dummy_if_null(ops, inode_link);
  789. set_to_dummy_if_null(ops, inode_unlink);
  790. set_to_dummy_if_null(ops, inode_symlink);
  791. set_to_dummy_if_null(ops, inode_mkdir);
  792. set_to_dummy_if_null(ops, inode_rmdir);
  793. set_to_dummy_if_null(ops, inode_mknod);
  794. set_to_dummy_if_null(ops, inode_rename);
  795. set_to_dummy_if_null(ops, inode_readlink);
  796. set_to_dummy_if_null(ops, inode_follow_link);
  797. set_to_dummy_if_null(ops, inode_permission);
  798. set_to_dummy_if_null(ops, inode_setattr);
  799. set_to_dummy_if_null(ops, inode_getattr);
  800. set_to_dummy_if_null(ops, inode_delete);
  801. set_to_dummy_if_null(ops, inode_setxattr);
  802. set_to_dummy_if_null(ops, inode_post_setxattr);
  803. set_to_dummy_if_null(ops, inode_getxattr);
  804. set_to_dummy_if_null(ops, inode_listxattr);
  805. set_to_dummy_if_null(ops, inode_removexattr);
  806. set_to_dummy_if_null(ops, inode_xattr_getsuffix);
  807. set_to_dummy_if_null(ops, inode_getsecurity);
  808. set_to_dummy_if_null(ops, inode_setsecurity);
  809. set_to_dummy_if_null(ops, inode_listsecurity);
  810. set_to_dummy_if_null(ops, file_permission);
  811. set_to_dummy_if_null(ops, file_alloc_security);
  812. set_to_dummy_if_null(ops, file_free_security);
  813. set_to_dummy_if_null(ops, file_ioctl);
  814. set_to_dummy_if_null(ops, file_mmap);
  815. set_to_dummy_if_null(ops, file_mprotect);
  816. set_to_dummy_if_null(ops, file_lock);
  817. set_to_dummy_if_null(ops, file_fcntl);
  818. set_to_dummy_if_null(ops, file_set_fowner);
  819. set_to_dummy_if_null(ops, file_send_sigiotask);
  820. set_to_dummy_if_null(ops, file_receive);
  821. set_to_dummy_if_null(ops, task_create);
  822. set_to_dummy_if_null(ops, task_alloc_security);
  823. set_to_dummy_if_null(ops, task_free_security);
  824. set_to_dummy_if_null(ops, task_setuid);
  825. set_to_dummy_if_null(ops, task_post_setuid);
  826. set_to_dummy_if_null(ops, task_setgid);
  827. set_to_dummy_if_null(ops, task_setpgid);
  828. set_to_dummy_if_null(ops, task_getpgid);
  829. set_to_dummy_if_null(ops, task_getsid);
  830. set_to_dummy_if_null(ops, task_getsecid);
  831. set_to_dummy_if_null(ops, task_setgroups);
  832. set_to_dummy_if_null(ops, task_setnice);
  833. set_to_dummy_if_null(ops, task_setioprio);
  834. set_to_dummy_if_null(ops, task_getioprio);
  835. set_to_dummy_if_null(ops, task_setrlimit);
  836. set_to_dummy_if_null(ops, task_setscheduler);
  837. set_to_dummy_if_null(ops, task_getscheduler);
  838. set_to_dummy_if_null(ops, task_movememory);
  839. set_to_dummy_if_null(ops, task_wait);
  840. set_to_dummy_if_null(ops, task_kill);
  841. set_to_dummy_if_null(ops, task_prctl);
  842. set_to_dummy_if_null(ops, task_reparent_to_init);
  843. set_to_dummy_if_null(ops, task_to_inode);
  844. set_to_dummy_if_null(ops, ipc_permission);
  845. set_to_dummy_if_null(ops, msg_msg_alloc_security);
  846. set_to_dummy_if_null(ops, msg_msg_free_security);
  847. set_to_dummy_if_null(ops, msg_queue_alloc_security);
  848. set_to_dummy_if_null(ops, msg_queue_free_security);
  849. set_to_dummy_if_null(ops, msg_queue_associate);
  850. set_to_dummy_if_null(ops, msg_queue_msgctl);
  851. set_to_dummy_if_null(ops, msg_queue_msgsnd);
  852. set_to_dummy_if_null(ops, msg_queue_msgrcv);
  853. set_to_dummy_if_null(ops, shm_alloc_security);
  854. set_to_dummy_if_null(ops, shm_free_security);
  855. set_to_dummy_if_null(ops, shm_associate);
  856. set_to_dummy_if_null(ops, shm_shmctl);
  857. set_to_dummy_if_null(ops, shm_shmat);
  858. set_to_dummy_if_null(ops, sem_alloc_security);
  859. set_to_dummy_if_null(ops, sem_free_security);
  860. set_to_dummy_if_null(ops, sem_associate);
  861. set_to_dummy_if_null(ops, sem_semctl);
  862. set_to_dummy_if_null(ops, sem_semop);
  863. set_to_dummy_if_null(ops, netlink_send);
  864. set_to_dummy_if_null(ops, netlink_recv);
  865. set_to_dummy_if_null(ops, register_security);
  866. set_to_dummy_if_null(ops, unregister_security);
  867. set_to_dummy_if_null(ops, d_instantiate);
  868. set_to_dummy_if_null(ops, getprocattr);
  869. set_to_dummy_if_null(ops, setprocattr);
  870. #ifdef CONFIG_SECURITY_NETWORK
  871. set_to_dummy_if_null(ops, unix_stream_connect);
  872. set_to_dummy_if_null(ops, unix_may_send);
  873. set_to_dummy_if_null(ops, socket_create);
  874. set_to_dummy_if_null(ops, socket_post_create);
  875. set_to_dummy_if_null(ops, socket_bind);
  876. set_to_dummy_if_null(ops, socket_connect);
  877. set_to_dummy_if_null(ops, socket_listen);
  878. set_to_dummy_if_null(ops, socket_accept);
  879. set_to_dummy_if_null(ops, socket_post_accept);
  880. set_to_dummy_if_null(ops, socket_sendmsg);
  881. set_to_dummy_if_null(ops, socket_recvmsg);
  882. set_to_dummy_if_null(ops, socket_getsockname);
  883. set_to_dummy_if_null(ops, socket_getpeername);
  884. set_to_dummy_if_null(ops, socket_setsockopt);
  885. set_to_dummy_if_null(ops, socket_getsockopt);
  886. set_to_dummy_if_null(ops, socket_shutdown);
  887. set_to_dummy_if_null(ops, socket_sock_rcv_skb);
  888. set_to_dummy_if_null(ops, socket_getpeersec_stream);
  889. set_to_dummy_if_null(ops, socket_getpeersec_dgram);
  890. set_to_dummy_if_null(ops, sk_alloc_security);
  891. set_to_dummy_if_null(ops, sk_free_security);
  892. set_to_dummy_if_null(ops, sk_getsid);
  893. #endif /* CONFIG_SECURITY_NETWORK */
  894. #ifdef CONFIG_SECURITY_NETWORK_XFRM
  895. set_to_dummy_if_null(ops, xfrm_policy_alloc_security);
  896. set_to_dummy_if_null(ops, xfrm_policy_clone_security);
  897. set_to_dummy_if_null(ops, xfrm_policy_free_security);
  898. set_to_dummy_if_null(ops, xfrm_policy_delete_security);
  899. set_to_dummy_if_null(ops, xfrm_state_alloc_security);
  900. set_to_dummy_if_null(ops, xfrm_state_free_security);
  901. set_to_dummy_if_null(ops, xfrm_state_delete_security);
  902. set_to_dummy_if_null(ops, xfrm_policy_lookup);
  903. #endif /* CONFIG_SECURITY_NETWORK_XFRM */
  904. #ifdef CONFIG_KEYS
  905. set_to_dummy_if_null(ops, key_alloc);
  906. set_to_dummy_if_null(ops, key_free);
  907. set_to_dummy_if_null(ops, key_permission);
  908. #endif /* CONFIG_KEYS */
  909. }