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