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