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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_inet_conn_established(struct sock *sk,
832 struct sk_buff *skb)
833 {
834 }
835
836 static inline void dummy_req_classify_flow(const struct request_sock *req,
837 struct flowi *fl)
838 {
839 }
840 #endif /* CONFIG_SECURITY_NETWORK */
841
842 #ifdef CONFIG_SECURITY_NETWORK_XFRM
843 static int dummy_xfrm_policy_alloc_security(struct xfrm_policy *xp,
844 struct xfrm_user_sec_ctx *sec_ctx)
845 {
846 return 0;
847 }
848
849 static inline int dummy_xfrm_policy_clone_security(struct xfrm_policy *old, struct xfrm_policy *new)
850 {
851 return 0;
852 }
853
854 static void dummy_xfrm_policy_free_security(struct xfrm_policy *xp)
855 {
856 }
857
858 static int dummy_xfrm_policy_delete_security(struct xfrm_policy *xp)
859 {
860 return 0;
861 }
862
863 static int dummy_xfrm_state_alloc_security(struct xfrm_state *x,
864 struct xfrm_user_sec_ctx *sec_ctx, u32 secid)
865 {
866 return 0;
867 }
868
869 static void dummy_xfrm_state_free_security(struct xfrm_state *x)
870 {
871 }
872
873 static int dummy_xfrm_state_delete_security(struct xfrm_state *x)
874 {
875 return 0;
876 }
877
878 static int dummy_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir)
879 {
880 return 0;
881 }
882
883 static int dummy_xfrm_state_pol_flow_match(struct xfrm_state *x,
884 struct xfrm_policy *xp, struct flowi *fl)
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, inet_conn_established);
1111 set_to_dummy_if_null(ops, req_classify_flow);
1112 #endif /* CONFIG_SECURITY_NETWORK */
1113 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1114 set_to_dummy_if_null(ops, xfrm_policy_alloc_security);
1115 set_to_dummy_if_null(ops, xfrm_policy_clone_security);
1116 set_to_dummy_if_null(ops, xfrm_policy_free_security);
1117 set_to_dummy_if_null(ops, xfrm_policy_delete_security);
1118 set_to_dummy_if_null(ops, xfrm_state_alloc_security);
1119 set_to_dummy_if_null(ops, xfrm_state_free_security);
1120 set_to_dummy_if_null(ops, xfrm_state_delete_security);
1121 set_to_dummy_if_null(ops, xfrm_policy_lookup);
1122 set_to_dummy_if_null(ops, xfrm_state_pol_flow_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