Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / security / dummy.c
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
15 #undef DEBUG
16
17 #include <linux/capability.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
31 static int dummy_ptrace (struct task_struct *parent, struct task_struct *child)
32 {
33 return 0;
34 }
35
36 static int dummy_capget (struct task_struct *target, kernel_cap_t * effective,
37 kernel_cap_t * inheritable, kernel_cap_t * permitted)
38 {
39 if (target->euid == 0) {
40 cap_set_full(*permitted);
41 cap_set_init_eff(*effective);
42 } else {
43 cap_clear(*permitted);
44 cap_clear(*effective);
45 }
46
47 cap_clear(*inheritable);
48
49 if (target->fsuid != 0) {
50 *permitted = cap_drop_fs_set(*permitted);
51 *effective = cap_drop_fs_set(*effective);
52 }
53 return 0;
54 }
55
56 static int dummy_capset_check (struct task_struct *target,
57 kernel_cap_t * effective,
58 kernel_cap_t * inheritable,
59 kernel_cap_t * permitted)
60 {
61 return -EPERM;
62 }
63
64 static void dummy_capset_set (struct task_struct *target,
65 kernel_cap_t * effective,
66 kernel_cap_t * inheritable,
67 kernel_cap_t * permitted)
68 {
69 return;
70 }
71
72 static int dummy_acct (struct file *file)
73 {
74 return 0;
75 }
76
77 static int dummy_capable (struct task_struct *tsk, int cap)
78 {
79 if (cap_raised (tsk->cap_effective, cap))
80 return 0;
81 return -EPERM;
82 }
83
84 static int dummy_sysctl (ctl_table * table, int op)
85 {
86 return 0;
87 }
88
89 static int dummy_quotactl (int cmds, int type, int id, struct super_block *sb)
90 {
91 return 0;
92 }
93
94 static int dummy_quota_on (struct dentry *dentry)
95 {
96 return 0;
97 }
98
99 static int dummy_syslog (int type)
100 {
101 if ((type != 3 && type != 10) && current->euid)
102 return -EPERM;
103 return 0;
104 }
105
106 static int dummy_settime(struct timespec *ts, struct timezone *tz)
107 {
108 if (!capable(CAP_SYS_TIME))
109 return -EPERM;
110 return 0;
111 }
112
113 static int dummy_vm_enough_memory(struct mm_struct *mm, long pages)
114 {
115 int cap_sys_admin = 0;
116
117 if (dummy_capable(current, CAP_SYS_ADMIN) == 0)
118 cap_sys_admin = 1;
119 return __vm_enough_memory(mm, pages, cap_sys_admin);
120 }
121
122 static int dummy_bprm_alloc_security (struct linux_binprm *bprm)
123 {
124 return 0;
125 }
126
127 static void dummy_bprm_free_security (struct linux_binprm *bprm)
128 {
129 return;
130 }
131
132 static void dummy_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
133 {
134 if (bprm->e_uid != current->uid || bprm->e_gid != current->gid) {
135 set_dumpable(current->mm, suid_dumpable);
136
137 if ((unsafe & ~LSM_UNSAFE_PTRACE_CAP) && !capable(CAP_SETUID)) {
138 bprm->e_uid = current->uid;
139 bprm->e_gid = current->gid;
140 }
141 }
142
143 current->suid = current->euid = current->fsuid = bprm->e_uid;
144 current->sgid = current->egid = current->fsgid = bprm->e_gid;
145
146 dummy_capget(current, &current->cap_effective, &current->cap_inheritable, &current->cap_permitted);
147 }
148
149 static void dummy_bprm_post_apply_creds (struct linux_binprm *bprm)
150 {
151 return;
152 }
153
154 static int dummy_bprm_set_security (struct linux_binprm *bprm)
155 {
156 return 0;
157 }
158
159 static int dummy_bprm_check_security (struct linux_binprm *bprm)
160 {
161 return 0;
162 }
163
164 static int dummy_bprm_secureexec (struct linux_binprm *bprm)
165 {
166 /* The new userland will simply use the value provided
167 in the AT_SECURE field to decide whether secure mode
168 is required. Hence, this logic is required to preserve
169 the legacy decision algorithm used by the old userland. */
170 return (current->euid != current->uid ||
171 current->egid != current->gid);
172 }
173
174 static int dummy_sb_alloc_security (struct super_block *sb)
175 {
176 return 0;
177 }
178
179 static void dummy_sb_free_security (struct super_block *sb)
180 {
181 return;
182 }
183
184 static int dummy_sb_copy_data (struct file_system_type *type,
185 void *orig, void *copy)
186 {
187 return 0;
188 }
189
190 static int dummy_sb_kern_mount (struct super_block *sb, void *data)
191 {
192 return 0;
193 }
194
195 static int dummy_sb_statfs (struct dentry *dentry)
196 {
197 return 0;
198 }
199
200 static int dummy_sb_mount (char *dev_name, struct nameidata *nd, char *type,
201 unsigned long flags, void *data)
202 {
203 return 0;
204 }
205
206 static int dummy_sb_check_sb (struct vfsmount *mnt, struct nameidata *nd)
207 {
208 return 0;
209 }
210
211 static int dummy_sb_umount (struct vfsmount *mnt, int flags)
212 {
213 return 0;
214 }
215
216 static void dummy_sb_umount_close (struct vfsmount *mnt)
217 {
218 return;
219 }
220
221 static void dummy_sb_umount_busy (struct vfsmount *mnt)
222 {
223 return;
224 }
225
226 static void dummy_sb_post_remount (struct vfsmount *mnt, unsigned long flags,
227 void *data)
228 {
229 return;
230 }
231
232
233 static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd)
234 {
235 return;
236 }
237
238 static int dummy_sb_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
239 {
240 return 0;
241 }
242
243 static void dummy_sb_post_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
244 {
245 return;
246 }
247
248 static int dummy_sb_get_mnt_opts(const struct super_block *sb, char ***mount_options,
249 int **flags, int *num_opts)
250 {
251 *mount_options = NULL;
252 *flags = NULL;
253 *num_opts = 0;
254 return 0;
255 }
256
257 static int dummy_sb_set_mnt_opts(struct super_block *sb, char **mount_options,
258 int *flags, int num_opts)
259 {
260 if (unlikely(num_opts))
261 return -EOPNOTSUPP;
262 return 0;
263 }
264
265 static void dummy_sb_clone_mnt_opts(const struct super_block *oldsb,
266 struct super_block *newsb)
267 {
268 return;
269 }
270
271 static int dummy_inode_alloc_security (struct inode *inode)
272 {
273 return 0;
274 }
275
276 static void dummy_inode_free_security (struct inode *inode)
277 {
278 return;
279 }
280
281 static int dummy_inode_init_security (struct inode *inode, struct inode *dir,
282 char **name, void **value, size_t *len)
283 {
284 return -EOPNOTSUPP;
285 }
286
287 static int dummy_inode_create (struct inode *inode, struct dentry *dentry,
288 int mask)
289 {
290 return 0;
291 }
292
293 static int dummy_inode_link (struct dentry *old_dentry, struct inode *inode,
294 struct dentry *new_dentry)
295 {
296 return 0;
297 }
298
299 static int dummy_inode_unlink (struct inode *inode, struct dentry *dentry)
300 {
301 return 0;
302 }
303
304 static int dummy_inode_symlink (struct inode *inode, struct dentry *dentry,
305 const char *name)
306 {
307 return 0;
308 }
309
310 static int dummy_inode_mkdir (struct inode *inode, struct dentry *dentry,
311 int mask)
312 {
313 return 0;
314 }
315
316 static int dummy_inode_rmdir (struct inode *inode, struct dentry *dentry)
317 {
318 return 0;
319 }
320
321 static int dummy_inode_mknod (struct inode *inode, struct dentry *dentry,
322 int mode, dev_t dev)
323 {
324 return 0;
325 }
326
327 static int dummy_inode_rename (struct inode *old_inode,
328 struct dentry *old_dentry,
329 struct inode *new_inode,
330 struct dentry *new_dentry)
331 {
332 return 0;
333 }
334
335 static int dummy_inode_readlink (struct dentry *dentry)
336 {
337 return 0;
338 }
339
340 static int dummy_inode_follow_link (struct dentry *dentry,
341 struct nameidata *nameidata)
342 {
343 return 0;
344 }
345
346 static int dummy_inode_permission (struct inode *inode, int mask, struct nameidata *nd)
347 {
348 return 0;
349 }
350
351 static int dummy_inode_setattr (struct dentry *dentry, struct iattr *iattr)
352 {
353 return 0;
354 }
355
356 static int dummy_inode_getattr (struct vfsmount *mnt, struct dentry *dentry)
357 {
358 return 0;
359 }
360
361 static void dummy_inode_delete (struct inode *ino)
362 {
363 return;
364 }
365
366 static int dummy_inode_setxattr (struct dentry *dentry, char *name, void *value,
367 size_t size, int flags)
368 {
369 if (!strncmp(name, XATTR_SECURITY_PREFIX,
370 sizeof(XATTR_SECURITY_PREFIX) - 1) &&
371 !capable(CAP_SYS_ADMIN))
372 return -EPERM;
373 return 0;
374 }
375
376 static void dummy_inode_post_setxattr (struct dentry *dentry, char *name, void *value,
377 size_t size, int flags)
378 {
379 }
380
381 static int dummy_inode_getxattr (struct dentry *dentry, char *name)
382 {
383 return 0;
384 }
385
386 static int dummy_inode_listxattr (struct dentry *dentry)
387 {
388 return 0;
389 }
390
391 static int dummy_inode_removexattr (struct dentry *dentry, char *name)
392 {
393 if (!strncmp(name, XATTR_SECURITY_PREFIX,
394 sizeof(XATTR_SECURITY_PREFIX) - 1) &&
395 !capable(CAP_SYS_ADMIN))
396 return -EPERM;
397 return 0;
398 }
399
400 static int dummy_inode_need_killpriv(struct dentry *dentry)
401 {
402 return 0;
403 }
404
405 static int dummy_inode_killpriv(struct dentry *dentry)
406 {
407 return 0;
408 }
409
410 static int dummy_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
411 {
412 return -EOPNOTSUPP;
413 }
414
415 static int dummy_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
416 {
417 return -EOPNOTSUPP;
418 }
419
420 static int dummy_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
421 {
422 return 0;
423 }
424
425 static int dummy_file_permission (struct file *file, int mask)
426 {
427 return 0;
428 }
429
430 static int dummy_file_alloc_security (struct file *file)
431 {
432 return 0;
433 }
434
435 static void dummy_file_free_security (struct file *file)
436 {
437 return;
438 }
439
440 static int dummy_file_ioctl (struct file *file, unsigned int command,
441 unsigned long arg)
442 {
443 return 0;
444 }
445
446 static int dummy_file_mmap (struct file *file, unsigned long reqprot,
447 unsigned long prot,
448 unsigned long flags,
449 unsigned long addr,
450 unsigned long addr_only)
451 {
452 if ((addr < mmap_min_addr) && !capable(CAP_SYS_RAWIO))
453 return -EACCES;
454 return 0;
455 }
456
457 static int dummy_file_mprotect (struct vm_area_struct *vma,
458 unsigned long reqprot,
459 unsigned long prot)
460 {
461 return 0;
462 }
463
464 static int dummy_file_lock (struct file *file, unsigned int cmd)
465 {
466 return 0;
467 }
468
469 static int dummy_file_fcntl (struct file *file, unsigned int cmd,
470 unsigned long arg)
471 {
472 return 0;
473 }
474
475 static int dummy_file_set_fowner (struct file *file)
476 {
477 return 0;
478 }
479
480 static int dummy_file_send_sigiotask (struct task_struct *tsk,
481 struct fown_struct *fown, int sig)
482 {
483 return 0;
484 }
485
486 static int dummy_file_receive (struct file *file)
487 {
488 return 0;
489 }
490
491 static int dummy_dentry_open (struct file *file)
492 {
493 return 0;
494 }
495
496 static int dummy_task_create (unsigned long clone_flags)
497 {
498 return 0;
499 }
500
501 static int dummy_task_alloc_security (struct task_struct *p)
502 {
503 return 0;
504 }
505
506 static void dummy_task_free_security (struct task_struct *p)
507 {
508 return;
509 }
510
511 static int dummy_task_setuid (uid_t id0, uid_t id1, uid_t id2, int flags)
512 {
513 return 0;
514 }
515
516 static int dummy_task_post_setuid (uid_t id0, uid_t id1, uid_t id2, int flags)
517 {
518 dummy_capget(current, &current->cap_effective, &current->cap_inheritable, &current->cap_permitted);
519 return 0;
520 }
521
522 static int dummy_task_setgid (gid_t id0, gid_t id1, gid_t id2, int flags)
523 {
524 return 0;
525 }
526
527 static int dummy_task_setpgid (struct task_struct *p, pid_t pgid)
528 {
529 return 0;
530 }
531
532 static int dummy_task_getpgid (struct task_struct *p)
533 {
534 return 0;
535 }
536
537 static int dummy_task_getsid (struct task_struct *p)
538 {
539 return 0;
540 }
541
542 static void dummy_task_getsecid (struct task_struct *p, u32 *secid)
543 { }
544
545 static int dummy_task_setgroups (struct group_info *group_info)
546 {
547 return 0;
548 }
549
550 static int dummy_task_setnice (struct task_struct *p, int nice)
551 {
552 return 0;
553 }
554
555 static int dummy_task_setioprio (struct task_struct *p, int ioprio)
556 {
557 return 0;
558 }
559
560 static int dummy_task_getioprio (struct task_struct *p)
561 {
562 return 0;
563 }
564
565 static int dummy_task_setrlimit (unsigned int resource, struct rlimit *new_rlim)
566 {
567 return 0;
568 }
569
570 static int dummy_task_setscheduler (struct task_struct *p, int policy,
571 struct sched_param *lp)
572 {
573 return 0;
574 }
575
576 static int dummy_task_getscheduler (struct task_struct *p)
577 {
578 return 0;
579 }
580
581 static int dummy_task_movememory (struct task_struct *p)
582 {
583 return 0;
584 }
585
586 static int dummy_task_wait (struct task_struct *p)
587 {
588 return 0;
589 }
590
591 static int dummy_task_kill (struct task_struct *p, struct siginfo *info,
592 int sig, u32 secid)
593 {
594 return 0;
595 }
596
597 static int dummy_task_prctl (int option, unsigned long arg2, unsigned long arg3,
598 unsigned long arg4, unsigned long arg5)
599 {
600 return 0;
601 }
602
603 static void dummy_task_reparent_to_init (struct task_struct *p)
604 {
605 p->euid = p->fsuid = 0;
606 return;
607 }
608
609 static void dummy_task_to_inode(struct task_struct *p, struct inode *inode)
610 { }
611
612 static int dummy_ipc_permission (struct kern_ipc_perm *ipcp, short flag)
613 {
614 return 0;
615 }
616
617 static int dummy_msg_msg_alloc_security (struct msg_msg *msg)
618 {
619 return 0;
620 }
621
622 static void dummy_msg_msg_free_security (struct msg_msg *msg)
623 {
624 return;
625 }
626
627 static int dummy_msg_queue_alloc_security (struct msg_queue *msq)
628 {
629 return 0;
630 }
631
632 static void dummy_msg_queue_free_security (struct msg_queue *msq)
633 {
634 return;
635 }
636
637 static int dummy_msg_queue_associate (struct msg_queue *msq,
638 int msqflg)
639 {
640 return 0;
641 }
642
643 static int dummy_msg_queue_msgctl (struct msg_queue *msq, int cmd)
644 {
645 return 0;
646 }
647
648 static int dummy_msg_queue_msgsnd (struct msg_queue *msq, struct msg_msg *msg,
649 int msgflg)
650 {
651 return 0;
652 }
653
654 static int dummy_msg_queue_msgrcv (struct msg_queue *msq, struct msg_msg *msg,
655 struct task_struct *target, long type,
656 int mode)
657 {
658 return 0;
659 }
660
661 static int dummy_shm_alloc_security (struct shmid_kernel *shp)
662 {
663 return 0;
664 }
665
666 static void dummy_shm_free_security (struct shmid_kernel *shp)
667 {
668 return;
669 }
670
671 static int dummy_shm_associate (struct shmid_kernel *shp, int shmflg)
672 {
673 return 0;
674 }
675
676 static int dummy_shm_shmctl (struct shmid_kernel *shp, int cmd)
677 {
678 return 0;
679 }
680
681 static int dummy_shm_shmat (struct shmid_kernel *shp, char __user *shmaddr,
682 int shmflg)
683 {
684 return 0;
685 }
686
687 static int dummy_sem_alloc_security (struct sem_array *sma)
688 {
689 return 0;
690 }
691
692 static void dummy_sem_free_security (struct sem_array *sma)
693 {
694 return;
695 }
696
697 static int dummy_sem_associate (struct sem_array *sma, int semflg)
698 {
699 return 0;
700 }
701
702 static int dummy_sem_semctl (struct sem_array *sma, int cmd)
703 {
704 return 0;
705 }
706
707 static int dummy_sem_semop (struct sem_array *sma,
708 struct sembuf *sops, unsigned nsops, int alter)
709 {
710 return 0;
711 }
712
713 static int dummy_netlink_send (struct sock *sk, struct sk_buff *skb)
714 {
715 NETLINK_CB(skb).eff_cap = current->cap_effective;
716 return 0;
717 }
718
719 static int dummy_netlink_recv (struct sk_buff *skb, int cap)
720 {
721 if (!cap_raised (NETLINK_CB (skb).eff_cap, cap))
722 return -EPERM;
723 return 0;
724 }
725
726 #ifdef CONFIG_SECURITY_NETWORK
727 static int dummy_unix_stream_connect (struct socket *sock,
728 struct socket *other,
729 struct sock *newsk)
730 {
731 return 0;
732 }
733
734 static int dummy_unix_may_send (struct socket *sock,
735 struct socket *other)
736 {
737 return 0;
738 }
739
740 static int dummy_socket_create (int family, int type,
741 int protocol, int kern)
742 {
743 return 0;
744 }
745
746 static int dummy_socket_post_create (struct socket *sock, int family, int type,
747 int protocol, int kern)
748 {
749 return 0;
750 }
751
752 static int dummy_socket_bind (struct socket *sock, struct sockaddr *address,
753 int addrlen)
754 {
755 return 0;
756 }
757
758 static int dummy_socket_connect (struct socket *sock, struct sockaddr *address,
759 int addrlen)
760 {
761 return 0;
762 }
763
764 static int dummy_socket_listen (struct socket *sock, int backlog)
765 {
766 return 0;
767 }
768
769 static int dummy_socket_accept (struct socket *sock, struct socket *newsock)
770 {
771 return 0;
772 }
773
774 static void dummy_socket_post_accept (struct socket *sock,
775 struct socket *newsock)
776 {
777 return;
778 }
779
780 static int dummy_socket_sendmsg (struct socket *sock, struct msghdr *msg,
781 int size)
782 {
783 return 0;
784 }
785
786 static int dummy_socket_recvmsg (struct socket *sock, struct msghdr *msg,
787 int size, int flags)
788 {
789 return 0;
790 }
791
792 static int dummy_socket_getsockname (struct socket *sock)
793 {
794 return 0;
795 }
796
797 static int dummy_socket_getpeername (struct socket *sock)
798 {
799 return 0;
800 }
801
802 static int dummy_socket_setsockopt (struct socket *sock, int level, int optname)
803 {
804 return 0;
805 }
806
807 static int dummy_socket_getsockopt (struct socket *sock, int level, int optname)
808 {
809 return 0;
810 }
811
812 static int dummy_socket_shutdown (struct socket *sock, int how)
813 {
814 return 0;
815 }
816
817 static int dummy_socket_sock_rcv_skb (struct sock *sk, struct sk_buff *skb)
818 {
819 return 0;
820 }
821
822 static int dummy_socket_getpeersec_stream(struct socket *sock, char __user *optval,
823 int __user *optlen, unsigned len)
824 {
825 return -ENOPROTOOPT;
826 }
827
828 static int dummy_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
829 {
830 return -ENOPROTOOPT;
831 }
832
833 static inline int dummy_sk_alloc_security (struct sock *sk, int family, gfp_t priority)
834 {
835 return 0;
836 }
837
838 static inline void dummy_sk_free_security (struct sock *sk)
839 {
840 }
841
842 static inline void dummy_sk_clone_security (const struct sock *sk, struct sock *newsk)
843 {
844 }
845
846 static inline void dummy_sk_getsecid(struct sock *sk, u32 *secid)
847 {
848 }
849
850 static inline void dummy_sock_graft(struct sock* sk, struct socket *parent)
851 {
852 }
853
854 static inline int dummy_inet_conn_request(struct sock *sk,
855 struct sk_buff *skb, struct request_sock *req)
856 {
857 return 0;
858 }
859
860 static inline void dummy_inet_csk_clone(struct sock *newsk,
861 const struct request_sock *req)
862 {
863 }
864
865 static inline void dummy_inet_conn_established(struct sock *sk,
866 struct sk_buff *skb)
867 {
868 }
869
870 static inline void dummy_req_classify_flow(const struct request_sock *req,
871 struct flowi *fl)
872 {
873 }
874 #endif /* CONFIG_SECURITY_NETWORK */
875
876 #ifdef CONFIG_SECURITY_NETWORK_XFRM
877 static int dummy_xfrm_policy_alloc_security(struct xfrm_policy *xp,
878 struct xfrm_user_sec_ctx *sec_ctx)
879 {
880 return 0;
881 }
882
883 static inline int dummy_xfrm_policy_clone_security(struct xfrm_policy *old, struct xfrm_policy *new)
884 {
885 return 0;
886 }
887
888 static void dummy_xfrm_policy_free_security(struct xfrm_policy *xp)
889 {
890 }
891
892 static int dummy_xfrm_policy_delete_security(struct xfrm_policy *xp)
893 {
894 return 0;
895 }
896
897 static int dummy_xfrm_state_alloc_security(struct xfrm_state *x,
898 struct xfrm_user_sec_ctx *sec_ctx, u32 secid)
899 {
900 return 0;
901 }
902
903 static void dummy_xfrm_state_free_security(struct xfrm_state *x)
904 {
905 }
906
907 static int dummy_xfrm_state_delete_security(struct xfrm_state *x)
908 {
909 return 0;
910 }
911
912 static int dummy_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir)
913 {
914 return 0;
915 }
916
917 static int dummy_xfrm_state_pol_flow_match(struct xfrm_state *x,
918 struct xfrm_policy *xp, struct flowi *fl)
919 {
920 return 1;
921 }
922
923 static int dummy_xfrm_decode_session(struct sk_buff *skb, u32 *fl, int ckall)
924 {
925 return 0;
926 }
927
928 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
929 static int dummy_register_security (const char *name, struct security_operations *ops)
930 {
931 return -EINVAL;
932 }
933
934 static void dummy_d_instantiate (struct dentry *dentry, struct inode *inode)
935 {
936 return;
937 }
938
939 static int dummy_getprocattr(struct task_struct *p, char *name, char **value)
940 {
941 return -EINVAL;
942 }
943
944 static int dummy_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
945 {
946 return -EINVAL;
947 }
948
949 static int dummy_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
950 {
951 return -EOPNOTSUPP;
952 }
953
954 static int dummy_secctx_to_secid(char *secdata, u32 seclen, u32 *secid)
955 {
956 return -EOPNOTSUPP;
957 }
958
959 static void dummy_release_secctx(char *secdata, u32 seclen)
960 {
961 }
962
963 #ifdef CONFIG_KEYS
964 static inline int dummy_key_alloc(struct key *key, struct task_struct *ctx,
965 unsigned long flags)
966 {
967 return 0;
968 }
969
970 static inline void dummy_key_free(struct key *key)
971 {
972 }
973
974 static inline int dummy_key_permission(key_ref_t key_ref,
975 struct task_struct *context,
976 key_perm_t perm)
977 {
978 return 0;
979 }
980 #endif /* CONFIG_KEYS */
981
982 struct security_operations dummy_security_ops;
983
984 #define set_to_dummy_if_null(ops, function) \
985 do { \
986 if (!ops->function) { \
987 ops->function = dummy_##function; \
988 pr_debug("Had to override the " #function \
989 " security operation with the dummy one.\n");\
990 } \
991 } while (0)
992
993 void security_fixup_ops (struct security_operations *ops)
994 {
995 set_to_dummy_if_null(ops, ptrace);
996 set_to_dummy_if_null(ops, capget);
997 set_to_dummy_if_null(ops, capset_check);
998 set_to_dummy_if_null(ops, capset_set);
999 set_to_dummy_if_null(ops, acct);
1000 set_to_dummy_if_null(ops, capable);
1001 set_to_dummy_if_null(ops, quotactl);
1002 set_to_dummy_if_null(ops, quota_on);
1003 set_to_dummy_if_null(ops, sysctl);
1004 set_to_dummy_if_null(ops, syslog);
1005 set_to_dummy_if_null(ops, settime);
1006 set_to_dummy_if_null(ops, vm_enough_memory);
1007 set_to_dummy_if_null(ops, bprm_alloc_security);
1008 set_to_dummy_if_null(ops, bprm_free_security);
1009 set_to_dummy_if_null(ops, bprm_apply_creds);
1010 set_to_dummy_if_null(ops, bprm_post_apply_creds);
1011 set_to_dummy_if_null(ops, bprm_set_security);
1012 set_to_dummy_if_null(ops, bprm_check_security);
1013 set_to_dummy_if_null(ops, bprm_secureexec);
1014 set_to_dummy_if_null(ops, sb_alloc_security);
1015 set_to_dummy_if_null(ops, sb_free_security);
1016 set_to_dummy_if_null(ops, sb_copy_data);
1017 set_to_dummy_if_null(ops, sb_kern_mount);
1018 set_to_dummy_if_null(ops, sb_statfs);
1019 set_to_dummy_if_null(ops, sb_mount);
1020 set_to_dummy_if_null(ops, sb_check_sb);
1021 set_to_dummy_if_null(ops, sb_umount);
1022 set_to_dummy_if_null(ops, sb_umount_close);
1023 set_to_dummy_if_null(ops, sb_umount_busy);
1024 set_to_dummy_if_null(ops, sb_post_remount);
1025 set_to_dummy_if_null(ops, sb_post_addmount);
1026 set_to_dummy_if_null(ops, sb_pivotroot);
1027 set_to_dummy_if_null(ops, sb_post_pivotroot);
1028 set_to_dummy_if_null(ops, sb_get_mnt_opts);
1029 set_to_dummy_if_null(ops, sb_set_mnt_opts);
1030 set_to_dummy_if_null(ops, sb_clone_mnt_opts);
1031 set_to_dummy_if_null(ops, inode_alloc_security);
1032 set_to_dummy_if_null(ops, inode_free_security);
1033 set_to_dummy_if_null(ops, inode_init_security);
1034 set_to_dummy_if_null(ops, inode_create);
1035 set_to_dummy_if_null(ops, inode_link);
1036 set_to_dummy_if_null(ops, inode_unlink);
1037 set_to_dummy_if_null(ops, inode_symlink);
1038 set_to_dummy_if_null(ops, inode_mkdir);
1039 set_to_dummy_if_null(ops, inode_rmdir);
1040 set_to_dummy_if_null(ops, inode_mknod);
1041 set_to_dummy_if_null(ops, inode_rename);
1042 set_to_dummy_if_null(ops, inode_readlink);
1043 set_to_dummy_if_null(ops, inode_follow_link);
1044 set_to_dummy_if_null(ops, inode_permission);
1045 set_to_dummy_if_null(ops, inode_setattr);
1046 set_to_dummy_if_null(ops, inode_getattr);
1047 set_to_dummy_if_null(ops, inode_delete);
1048 set_to_dummy_if_null(ops, inode_setxattr);
1049 set_to_dummy_if_null(ops, inode_post_setxattr);
1050 set_to_dummy_if_null(ops, inode_getxattr);
1051 set_to_dummy_if_null(ops, inode_listxattr);
1052 set_to_dummy_if_null(ops, inode_removexattr);
1053 set_to_dummy_if_null(ops, inode_need_killpriv);
1054 set_to_dummy_if_null(ops, inode_killpriv);
1055 set_to_dummy_if_null(ops, inode_getsecurity);
1056 set_to_dummy_if_null(ops, inode_setsecurity);
1057 set_to_dummy_if_null(ops, inode_listsecurity);
1058 set_to_dummy_if_null(ops, file_permission);
1059 set_to_dummy_if_null(ops, file_alloc_security);
1060 set_to_dummy_if_null(ops, file_free_security);
1061 set_to_dummy_if_null(ops, file_ioctl);
1062 set_to_dummy_if_null(ops, file_mmap);
1063 set_to_dummy_if_null(ops, file_mprotect);
1064 set_to_dummy_if_null(ops, file_lock);
1065 set_to_dummy_if_null(ops, file_fcntl);
1066 set_to_dummy_if_null(ops, file_set_fowner);
1067 set_to_dummy_if_null(ops, file_send_sigiotask);
1068 set_to_dummy_if_null(ops, file_receive);
1069 set_to_dummy_if_null(ops, dentry_open);
1070 set_to_dummy_if_null(ops, task_create);
1071 set_to_dummy_if_null(ops, task_alloc_security);
1072 set_to_dummy_if_null(ops, task_free_security);
1073 set_to_dummy_if_null(ops, task_setuid);
1074 set_to_dummy_if_null(ops, task_post_setuid);
1075 set_to_dummy_if_null(ops, task_setgid);
1076 set_to_dummy_if_null(ops, task_setpgid);
1077 set_to_dummy_if_null(ops, task_getpgid);
1078 set_to_dummy_if_null(ops, task_getsid);
1079 set_to_dummy_if_null(ops, task_getsecid);
1080 set_to_dummy_if_null(ops, task_setgroups);
1081 set_to_dummy_if_null(ops, task_setnice);
1082 set_to_dummy_if_null(ops, task_setioprio);
1083 set_to_dummy_if_null(ops, task_getioprio);
1084 set_to_dummy_if_null(ops, task_setrlimit);
1085 set_to_dummy_if_null(ops, task_setscheduler);
1086 set_to_dummy_if_null(ops, task_getscheduler);
1087 set_to_dummy_if_null(ops, task_movememory);
1088 set_to_dummy_if_null(ops, task_wait);
1089 set_to_dummy_if_null(ops, task_kill);
1090 set_to_dummy_if_null(ops, task_prctl);
1091 set_to_dummy_if_null(ops, task_reparent_to_init);
1092 set_to_dummy_if_null(ops, task_to_inode);
1093 set_to_dummy_if_null(ops, ipc_permission);
1094 set_to_dummy_if_null(ops, msg_msg_alloc_security);
1095 set_to_dummy_if_null(ops, msg_msg_free_security);
1096 set_to_dummy_if_null(ops, msg_queue_alloc_security);
1097 set_to_dummy_if_null(ops, msg_queue_free_security);
1098 set_to_dummy_if_null(ops, msg_queue_associate);
1099 set_to_dummy_if_null(ops, msg_queue_msgctl);
1100 set_to_dummy_if_null(ops, msg_queue_msgsnd);
1101 set_to_dummy_if_null(ops, msg_queue_msgrcv);
1102 set_to_dummy_if_null(ops, shm_alloc_security);
1103 set_to_dummy_if_null(ops, shm_free_security);
1104 set_to_dummy_if_null(ops, shm_associate);
1105 set_to_dummy_if_null(ops, shm_shmctl);
1106 set_to_dummy_if_null(ops, shm_shmat);
1107 set_to_dummy_if_null(ops, sem_alloc_security);
1108 set_to_dummy_if_null(ops, sem_free_security);
1109 set_to_dummy_if_null(ops, sem_associate);
1110 set_to_dummy_if_null(ops, sem_semctl);
1111 set_to_dummy_if_null(ops, sem_semop);
1112 set_to_dummy_if_null(ops, netlink_send);
1113 set_to_dummy_if_null(ops, netlink_recv);
1114 set_to_dummy_if_null(ops, register_security);
1115 set_to_dummy_if_null(ops, d_instantiate);
1116 set_to_dummy_if_null(ops, getprocattr);
1117 set_to_dummy_if_null(ops, setprocattr);
1118 set_to_dummy_if_null(ops, secid_to_secctx);
1119 set_to_dummy_if_null(ops, secctx_to_secid);
1120 set_to_dummy_if_null(ops, release_secctx);
1121 #ifdef CONFIG_SECURITY_NETWORK
1122 set_to_dummy_if_null(ops, unix_stream_connect);
1123 set_to_dummy_if_null(ops, unix_may_send);
1124 set_to_dummy_if_null(ops, socket_create);
1125 set_to_dummy_if_null(ops, socket_post_create);
1126 set_to_dummy_if_null(ops, socket_bind);
1127 set_to_dummy_if_null(ops, socket_connect);
1128 set_to_dummy_if_null(ops, socket_listen);
1129 set_to_dummy_if_null(ops, socket_accept);
1130 set_to_dummy_if_null(ops, socket_post_accept);
1131 set_to_dummy_if_null(ops, socket_sendmsg);
1132 set_to_dummy_if_null(ops, socket_recvmsg);
1133 set_to_dummy_if_null(ops, socket_getsockname);
1134 set_to_dummy_if_null(ops, socket_getpeername);
1135 set_to_dummy_if_null(ops, socket_setsockopt);
1136 set_to_dummy_if_null(ops, socket_getsockopt);
1137 set_to_dummy_if_null(ops, socket_shutdown);
1138 set_to_dummy_if_null(ops, socket_sock_rcv_skb);
1139 set_to_dummy_if_null(ops, socket_getpeersec_stream);
1140 set_to_dummy_if_null(ops, socket_getpeersec_dgram);
1141 set_to_dummy_if_null(ops, sk_alloc_security);
1142 set_to_dummy_if_null(ops, sk_free_security);
1143 set_to_dummy_if_null(ops, sk_clone_security);
1144 set_to_dummy_if_null(ops, sk_getsecid);
1145 set_to_dummy_if_null(ops, sock_graft);
1146 set_to_dummy_if_null(ops, inet_conn_request);
1147 set_to_dummy_if_null(ops, inet_csk_clone);
1148 set_to_dummy_if_null(ops, inet_conn_established);
1149 set_to_dummy_if_null(ops, req_classify_flow);
1150 #endif /* CONFIG_SECURITY_NETWORK */
1151 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1152 set_to_dummy_if_null(ops, xfrm_policy_alloc_security);
1153 set_to_dummy_if_null(ops, xfrm_policy_clone_security);
1154 set_to_dummy_if_null(ops, xfrm_policy_free_security);
1155 set_to_dummy_if_null(ops, xfrm_policy_delete_security);
1156 set_to_dummy_if_null(ops, xfrm_state_alloc_security);
1157 set_to_dummy_if_null(ops, xfrm_state_free_security);
1158 set_to_dummy_if_null(ops, xfrm_state_delete_security);
1159 set_to_dummy_if_null(ops, xfrm_policy_lookup);
1160 set_to_dummy_if_null(ops, xfrm_state_pol_flow_match);
1161 set_to_dummy_if_null(ops, xfrm_decode_session);
1162 #endif /* CONFIG_SECURITY_NETWORK_XFRM */
1163 #ifdef CONFIG_KEYS
1164 set_to_dummy_if_null(ops, key_alloc);
1165 set_to_dummy_if_null(ops, key_free);
1166 set_to_dummy_if_null(ops, key_permission);
1167 #endif /* CONFIG_KEYS */
1168
1169 }
1170