blob: aeee70565509dd8e6c843591e142f452fb721e96 [file] [log] [blame]
Linus Torvalds1da177e2005-04-16 15:20:36 -07001/*
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
Randy.Dunlapc59ede72006-01-11 12:17:46 -080017#include <linux/capability.h>
Linus Torvalds1da177e2005-04-16 15:20:36 -070018#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
32static int dummy_ptrace (struct task_struct *parent, struct task_struct *child)
33{
34 return 0;
35}
36
37static 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
54static 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
62static 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
70static int dummy_acct (struct file *file)
71{
72 return 0;
73}
74
75static 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
82static int dummy_sysctl (ctl_table * table, int op)
83{
84 return 0;
85}
86
87static int dummy_quotactl (int cmds, int type, int id, struct super_block *sb)
88{
89 return 0;
90}
91
92static int dummy_quota_on (struct dentry *dentry)
93{
94 return 0;
95}
96
97static int dummy_syslog (int type)
98{
99 if ((type != 3 && type != 10) && current->euid)
100 return -EPERM;
101 return 0;
102}
103
104static int dummy_settime(struct timespec *ts, struct timezone *tz)
105{
106 if (!capable(CAP_SYS_TIME))
107 return -EPERM;
108 return 0;
109}
110
111static 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
120static int dummy_bprm_alloc_security (struct linux_binprm *bprm)
121{
122 return 0;
123}
124
125static void dummy_bprm_free_security (struct linux_binprm *bprm)
126{
127 return;
128}
129
130static void dummy_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
131{
132 if (bprm->e_uid != current->uid || bprm->e_gid != current->gid) {
Alan Coxd6e71142005-06-23 00:09:43 -0700133 current->mm->dumpable = suid_dumpable;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700134
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
147static void dummy_bprm_post_apply_creds (struct linux_binprm *bprm)
148{
149 return;
150}
151
152static int dummy_bprm_set_security (struct linux_binprm *bprm)
153{
154 return 0;
155}
156
157static int dummy_bprm_check_security (struct linux_binprm *bprm)
158{
159 return 0;
160}
161
162static 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
172static int dummy_sb_alloc_security (struct super_block *sb)
173{
174 return 0;
175}
176
177static void dummy_sb_free_security (struct super_block *sb)
178{
179 return;
180}
181
182static int dummy_sb_copy_data (struct file_system_type *type,
183 void *orig, void *copy)
184{
185 return 0;
186}
187
188static int dummy_sb_kern_mount (struct super_block *sb, void *data)
189{
190 return 0;
191}
192
David Howells726c3342006-06-23 02:02:58 -0700193static int dummy_sb_statfs (struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700194{
195 return 0;
196}
197
198static int dummy_sb_mount (char *dev_name, struct nameidata *nd, char *type,
199 unsigned long flags, void *data)
200{
201 return 0;
202}
203
204static int dummy_sb_check_sb (struct vfsmount *mnt, struct nameidata *nd)
205{
206 return 0;
207}
208
209static int dummy_sb_umount (struct vfsmount *mnt, int flags)
210{
211 return 0;
212}
213
214static void dummy_sb_umount_close (struct vfsmount *mnt)
215{
216 return;
217}
218
219static void dummy_sb_umount_busy (struct vfsmount *mnt)
220{
221 return;
222}
223
224static void dummy_sb_post_remount (struct vfsmount *mnt, unsigned long flags,
225 void *data)
226{
227 return;
228}
229
230
231static void dummy_sb_post_mountroot (void)
232{
233 return;
234}
235
236static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd)
237{
238 return;
239}
240
241static int dummy_sb_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
242{
243 return 0;
244}
245
246static void dummy_sb_post_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
247{
248 return;
249}
250
251static int dummy_inode_alloc_security (struct inode *inode)
252{
253 return 0;
254}
255
256static void dummy_inode_free_security (struct inode *inode)
257{
258 return;
259}
260
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700261static 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700267static int dummy_inode_create (struct inode *inode, struct dentry *dentry,
268 int mask)
269{
270 return 0;
271}
272
Linus Torvalds1da177e2005-04-16 15:20:36 -0700273static int dummy_inode_link (struct dentry *old_dentry, struct inode *inode,
274 struct dentry *new_dentry)
275{
276 return 0;
277}
278
Linus Torvalds1da177e2005-04-16 15:20:36 -0700279static int dummy_inode_unlink (struct inode *inode, struct dentry *dentry)
280{
281 return 0;
282}
283
284static int dummy_inode_symlink (struct inode *inode, struct dentry *dentry,
285 const char *name)
286{
287 return 0;
288}
289
Linus Torvalds1da177e2005-04-16 15:20:36 -0700290static int dummy_inode_mkdir (struct inode *inode, struct dentry *dentry,
291 int mask)
292{
293 return 0;
294}
295
Linus Torvalds1da177e2005-04-16 15:20:36 -0700296static int dummy_inode_rmdir (struct inode *inode, struct dentry *dentry)
297{
298 return 0;
299}
300
301static int dummy_inode_mknod (struct inode *inode, struct dentry *dentry,
302 int mode, dev_t dev)
303{
304 return 0;
305}
306
Linus Torvalds1da177e2005-04-16 15:20:36 -0700307static 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
Linus Torvalds1da177e2005-04-16 15:20:36 -0700315static int dummy_inode_readlink (struct dentry *dentry)
316{
317 return 0;
318}
319
320static int dummy_inode_follow_link (struct dentry *dentry,
321 struct nameidata *nameidata)
322{
323 return 0;
324}
325
326static int dummy_inode_permission (struct inode *inode, int mask, struct nameidata *nd)
327{
328 return 0;
329}
330
331static int dummy_inode_setattr (struct dentry *dentry, struct iattr *iattr)
332{
333 return 0;
334}
335
336static int dummy_inode_getattr (struct vfsmount *mnt, struct dentry *dentry)
337{
338 return 0;
339}
340
341static void dummy_inode_delete (struct inode *ino)
342{
343 return;
344}
345
346static 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
356static void dummy_inode_post_setxattr (struct dentry *dentry, char *name, void *value,
357 size_t size, int flags)
358{
359}
360
361static int dummy_inode_getxattr (struct dentry *dentry, char *name)
362{
363 return 0;
364}
365
366static int dummy_inode_listxattr (struct dentry *dentry)
367{
368 return 0;
369}
370
371static 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
Dustin Kirkland7306a0b2005-11-16 15:53:13 +0000380static int dummy_inode_getsecurity(const struct inode *inode, const char *name, void *buffer, size_t size, int err)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700381{
382 return -EOPNOTSUPP;
383}
384
385static int dummy_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
386{
387 return -EOPNOTSUPP;
388}
389
390static int dummy_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
391{
392 return 0;
393}
394
Dustin Kirkland7306a0b2005-11-16 15:53:13 +0000395static const char *dummy_inode_xattr_getsuffix(void)
396{
397 return NULL;
398}
399
Linus Torvalds1da177e2005-04-16 15:20:36 -0700400static int dummy_file_permission (struct file *file, int mask)
401{
402 return 0;
403}
404
405static int dummy_file_alloc_security (struct file *file)
406{
407 return 0;
408}
409
410static void dummy_file_free_security (struct file *file)
411{
412 return;
413}
414
415static int dummy_file_ioctl (struct file *file, unsigned int command,
416 unsigned long arg)
417{
418 return 0;
419}
420
421static int dummy_file_mmap (struct file *file, unsigned long reqprot,
422 unsigned long prot,
423 unsigned long flags)
424{
425 return 0;
426}
427
428static int dummy_file_mprotect (struct vm_area_struct *vma,
429 unsigned long reqprot,
430 unsigned long prot)
431{
432 return 0;
433}
434
435static int dummy_file_lock (struct file *file, unsigned int cmd)
436{
437 return 0;
438}
439
440static int dummy_file_fcntl (struct file *file, unsigned int cmd,
441 unsigned long arg)
442{
443 return 0;
444}
445
446static int dummy_file_set_fowner (struct file *file)
447{
448 return 0;
449}
450
451static int dummy_file_send_sigiotask (struct task_struct *tsk,
452 struct fown_struct *fown, int sig)
453{
454 return 0;
455}
456
457static int dummy_file_receive (struct file *file)
458{
459 return 0;
460}
461
462static int dummy_task_create (unsigned long clone_flags)
463{
464 return 0;
465}
466
467static int dummy_task_alloc_security (struct task_struct *p)
468{
469 return 0;
470}
471
472static void dummy_task_free_security (struct task_struct *p)
473{
474 return;
475}
476
477static int dummy_task_setuid (uid_t id0, uid_t id1, uid_t id2, int flags)
478{
479 return 0;
480}
481
482static 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
488static int dummy_task_setgid (gid_t id0, gid_t id1, gid_t id2, int flags)
489{
490 return 0;
491}
492
493static int dummy_task_setpgid (struct task_struct *p, pid_t pgid)
494{
495 return 0;
496}
497
498static int dummy_task_getpgid (struct task_struct *p)
499{
500 return 0;
501}
502
503static int dummy_task_getsid (struct task_struct *p)
504{
505 return 0;
506}
507
David Quigleyf9008e42006-06-30 01:55:46 -0700508static void dummy_task_getsecid (struct task_struct *p, u32 *secid)
509{ }
510
Linus Torvalds1da177e2005-04-16 15:20:36 -0700511static int dummy_task_setgroups (struct group_info *group_info)
512{
513 return 0;
514}
515
516static int dummy_task_setnice (struct task_struct *p, int nice)
517{
518 return 0;
519}
520
James Morris03e68062006-06-23 02:03:58 -0700521static int dummy_task_setioprio (struct task_struct *p, int ioprio)
522{
523 return 0;
524}
525
David Quigleya1836a42006-06-30 01:55:49 -0700526static int dummy_task_getioprio (struct task_struct *p)
527{
528 return 0;
529}
530
Linus Torvalds1da177e2005-04-16 15:20:36 -0700531static int dummy_task_setrlimit (unsigned int resource, struct rlimit *new_rlim)
532{
533 return 0;
534}
535
536static int dummy_task_setscheduler (struct task_struct *p, int policy,
537 struct sched_param *lp)
538{
539 return 0;
540}
541
542static int dummy_task_getscheduler (struct task_struct *p)
543{
544 return 0;
545}
546
David Quigley35601542006-06-23 02:04:01 -0700547static int dummy_task_movememory (struct task_struct *p)
548{
549 return 0;
550}
551
Linus Torvalds1da177e2005-04-16 15:20:36 -0700552static int dummy_task_wait (struct task_struct *p)
553{
554 return 0;
555}
556
557static int dummy_task_kill (struct task_struct *p, struct siginfo *info,
David Quigleyf9008e42006-06-30 01:55:46 -0700558 int sig, u32 secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700559{
560 return 0;
561}
562
563static 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
569static void dummy_task_reparent_to_init (struct task_struct *p)
570{
571 p->euid = p->fsuid = 0;
572 return;
573}
574
575static void dummy_task_to_inode(struct task_struct *p, struct inode *inode)
576{ }
577
578static int dummy_ipc_permission (struct kern_ipc_perm *ipcp, short flag)
579{
580 return 0;
581}
582
583static int dummy_msg_msg_alloc_security (struct msg_msg *msg)
584{
585 return 0;
586}
587
588static void dummy_msg_msg_free_security (struct msg_msg *msg)
589{
590 return;
591}
592
593static int dummy_msg_queue_alloc_security (struct msg_queue *msq)
594{
595 return 0;
596}
597
598static void dummy_msg_queue_free_security (struct msg_queue *msq)
599{
600 return;
601}
602
603static int dummy_msg_queue_associate (struct msg_queue *msq,
604 int msqflg)
605{
606 return 0;
607}
608
609static int dummy_msg_queue_msgctl (struct msg_queue *msq, int cmd)
610{
611 return 0;
612}
613
614static int dummy_msg_queue_msgsnd (struct msg_queue *msq, struct msg_msg *msg,
615 int msgflg)
616{
617 return 0;
618}
619
620static 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
627static int dummy_shm_alloc_security (struct shmid_kernel *shp)
628{
629 return 0;
630}
631
632static void dummy_shm_free_security (struct shmid_kernel *shp)
633{
634 return;
635}
636
637static int dummy_shm_associate (struct shmid_kernel *shp, int shmflg)
638{
639 return 0;
640}
641
642static int dummy_shm_shmctl (struct shmid_kernel *shp, int cmd)
643{
644 return 0;
645}
646
647static int dummy_shm_shmat (struct shmid_kernel *shp, char __user *shmaddr,
648 int shmflg)
649{
650 return 0;
651}
652
653static int dummy_sem_alloc_security (struct sem_array *sma)
654{
655 return 0;
656}
657
658static void dummy_sem_free_security (struct sem_array *sma)
659{
660 return;
661}
662
663static int dummy_sem_associate (struct sem_array *sma, int semflg)
664{
665 return 0;
666}
667
668static int dummy_sem_semctl (struct sem_array *sma, int cmd)
669{
670 return 0;
671}
672
673static int dummy_sem_semop (struct sem_array *sma,
674 struct sembuf *sops, unsigned nsops, int alter)
675{
676 return 0;
677}
678
679static 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
Darrel Goeddelc7bdb542006-06-27 13:26:11 -0700685static int dummy_netlink_recv (struct sk_buff *skb, int cap)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700686{
Darrel Goeddelc7bdb542006-06-27 13:26:11 -0700687 if (!cap_raised (NETLINK_CB (skb).eff_cap, cap))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700688 return -EPERM;
689 return 0;
690}
691
692#ifdef CONFIG_SECURITY_NETWORK
693static int dummy_unix_stream_connect (struct socket *sock,
694 struct socket *other,
695 struct sock *newsk)
696{
697 return 0;
698}
699
700static int dummy_unix_may_send (struct socket *sock,
701 struct socket *other)
702{
703 return 0;
704}
705
706static int dummy_socket_create (int family, int type,
707 int protocol, int kern)
708{
709 return 0;
710}
711
Venkat Yekkirala7420ed22006-08-04 23:17:57 -0700712static int dummy_socket_post_create (struct socket *sock, int family, int type,
713 int protocol, int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700714{
Venkat Yekkirala7420ed22006-08-04 23:17:57 -0700715 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700716}
717
718static int dummy_socket_bind (struct socket *sock, struct sockaddr *address,
719 int addrlen)
720{
721 return 0;
722}
723
724static int dummy_socket_connect (struct socket *sock, struct sockaddr *address,
725 int addrlen)
726{
727 return 0;
728}
729
730static int dummy_socket_listen (struct socket *sock, int backlog)
731{
732 return 0;
733}
734
735static int dummy_socket_accept (struct socket *sock, struct socket *newsock)
736{
737 return 0;
738}
739
740static void dummy_socket_post_accept (struct socket *sock,
741 struct socket *newsock)
742{
743 return;
744}
745
746static int dummy_socket_sendmsg (struct socket *sock, struct msghdr *msg,
747 int size)
748{
749 return 0;
750}
751
752static int dummy_socket_recvmsg (struct socket *sock, struct msghdr *msg,
753 int size, int flags)
754{
755 return 0;
756}
757
758static int dummy_socket_getsockname (struct socket *sock)
759{
760 return 0;
761}
762
763static int dummy_socket_getpeername (struct socket *sock)
764{
765 return 0;
766}
767
768static int dummy_socket_setsockopt (struct socket *sock, int level, int optname)
769{
770 return 0;
771}
772
773static int dummy_socket_getsockopt (struct socket *sock, int level, int optname)
774{
775 return 0;
776}
777
778static int dummy_socket_shutdown (struct socket *sock, int how)
779{
780 return 0;
781}
782
783static int dummy_socket_sock_rcv_skb (struct sock *sk, struct sk_buff *skb)
784{
785 return 0;
786}
787
Catherine Zhang2c7946a2006-03-20 22:41:23 -0800788static int dummy_socket_getpeersec_stream(struct socket *sock, char __user *optval,
789 int __user *optlen, unsigned len)
790{
791 return -ENOPROTOOPT;
792}
793
Catherine Zhangdc49c1f2006-08-02 14:12:06 -0700794static int dummy_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700795{
796 return -ENOPROTOOPT;
797}
798
Al Viro7d877f32005-10-21 03:20:43 -0400799static inline int dummy_sk_alloc_security (struct sock *sk, int family, gfp_t priority)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700800{
801 return 0;
802}
803
804static inline void dummy_sk_free_security (struct sock *sk)
805{
806}
Trent Jaegerdf718372005-12-13 23:12:27 -0800807
Venkat Yekkirala892c1412006-08-04 23:08:56 -0700808static inline void dummy_sk_clone_security (const struct sock *sk, struct sock *newsk)
809{
810}
811
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -0700812static inline void dummy_sk_getsecid(struct sock *sk, u32 *secid)
Trent Jaegerdf718372005-12-13 23:12:27 -0800813{
Trent Jaegerdf718372005-12-13 23:12:27 -0800814}
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700815
816static inline void dummy_sock_graft(struct sock* sk, struct socket *parent)
817{
818}
819
820static inline int dummy_inet_conn_request(struct sock *sk,
821 struct sk_buff *skb, struct request_sock *req)
822{
823 return 0;
824}
825
826static inline void dummy_inet_csk_clone(struct sock *newsk,
827 const struct request_sock *req)
828{
829}
830
831static inline void dummy_req_classify_flow(const struct request_sock *req,
832 struct flowi *fl)
833{
834}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700835#endif /* CONFIG_SECURITY_NETWORK */
836
Trent Jaegerdf718372005-12-13 23:12:27 -0800837#ifdef CONFIG_SECURITY_NETWORK_XFRM
Venkat Yekkiralacb969f02006-07-24 23:32:20 -0700838static int dummy_xfrm_policy_alloc_security(struct xfrm_policy *xp,
839 struct xfrm_user_sec_ctx *sec_ctx, struct sock *sk)
Trent Jaegerdf718372005-12-13 23:12:27 -0800840{
841 return 0;
842}
843
844static inline int dummy_xfrm_policy_clone_security(struct xfrm_policy *old, struct xfrm_policy *new)
845{
846 return 0;
847}
848
849static void dummy_xfrm_policy_free_security(struct xfrm_policy *xp)
850{
851}
852
Catherine Zhangc8c05a82006-06-08 23:39:49 -0700853static int dummy_xfrm_policy_delete_security(struct xfrm_policy *xp)
854{
855 return 0;
856}
857
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700858static 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)
Trent Jaegerdf718372005-12-13 23:12:27 -0800860{
861 return 0;
862}
863
864static void dummy_xfrm_state_free_security(struct xfrm_state *x)
865{
866}
867
Catherine Zhangc8c05a82006-06-08 23:39:49 -0700868static int dummy_xfrm_state_delete_security(struct xfrm_state *x)
869{
870 return 0;
871}
872
Trent Jaegerdf718372005-12-13 23:12:27 -0800873static int dummy_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir)
874{
875 return 0;
876}
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700877
878static 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
884static int dummy_xfrm_flow_state_match(struct flowi *fl, struct xfrm_state *xfrm)
885{
886 return 1;
887}
888
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -0700889static int dummy_xfrm_decode_session(struct sk_buff *skb, u32 *fl, int ckall)
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700890{
891 return 0;
892}
893
Trent Jaegerdf718372005-12-13 23:12:27 -0800894#endif /* CONFIG_SECURITY_NETWORK_XFRM */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700895static int dummy_register_security (const char *name, struct security_operations *ops)
896{
897 return -EINVAL;
898}
899
900static int dummy_unregister_security (const char *name, struct security_operations *ops)
901{
902 return -EINVAL;
903}
904
905static void dummy_d_instantiate (struct dentry *dentry, struct inode *inode)
906{
907 return;
908}
909
910static int dummy_getprocattr(struct task_struct *p, char *name, void *value, size_t size)
911{
912 return -EINVAL;
913}
914
915static int dummy_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
916{
917 return -EINVAL;
918}
919
Catherine Zhangdc49c1f2006-08-02 14:12:06 -0700920static int dummy_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
921{
922 return -EOPNOTSUPP;
923}
924
925static void dummy_release_secctx(char *secdata, u32 seclen)
926{
927}
928
David Howells29db9192005-10-30 15:02:44 -0800929#ifdef CONFIG_KEYS
David Howells7e047ef2006-06-26 00:24:50 -0700930static inline int dummy_key_alloc(struct key *key, struct task_struct *ctx,
931 unsigned long flags)
David Howells29db9192005-10-30 15:02:44 -0800932{
933 return 0;
934}
935
936static inline void dummy_key_free(struct key *key)
937{
938}
939
940static 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 */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700947
948struct 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
959void 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);
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700997 set_to_dummy_if_null(ops, inode_init_security);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700998 set_to_dummy_if_null(ops, inode_create);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700999 set_to_dummy_if_null(ops, inode_link);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001000 set_to_dummy_if_null(ops, inode_unlink);
1001 set_to_dummy_if_null(ops, inode_symlink);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001002 set_to_dummy_if_null(ops, inode_mkdir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001003 set_to_dummy_if_null(ops, inode_rmdir);
1004 set_to_dummy_if_null(ops, inode_mknod);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005 set_to_dummy_if_null(ops, inode_rename);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 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);
Dustin Kirkland7306a0b2005-11-16 15:53:13 +00001017 set_to_dummy_if_null(ops, inode_xattr_getsuffix);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001018 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);
David Quigleyf9008e42006-06-30 01:55:46 -07001041 set_to_dummy_if_null(ops, task_getsecid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001042 set_to_dummy_if_null(ops, task_setgroups);
1043 set_to_dummy_if_null(ops, task_setnice);
James Morris03e68062006-06-23 02:03:58 -07001044 set_to_dummy_if_null(ops, task_setioprio);
David Quigleya1836a42006-06-30 01:55:49 -07001045 set_to_dummy_if_null(ops, task_getioprio);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001046 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);
David Quigley35601542006-06-23 02:04:01 -07001049 set_to_dummy_if_null(ops, task_movememory);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050 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);
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001081 set_to_dummy_if_null(ops, secid_to_secctx);
1082 set_to_dummy_if_null(ops, release_secctx);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001083#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);
Arnaldo Carvalho de Meloc841aa02006-03-20 22:47:37 -08001101 set_to_dummy_if_null(ops, socket_getpeersec_stream);
1102 set_to_dummy_if_null(ops, socket_getpeersec_dgram);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001103 set_to_dummy_if_null(ops, sk_alloc_security);
1104 set_to_dummy_if_null(ops, sk_free_security);
Venkat Yekkirala892c1412006-08-04 23:08:56 -07001105 set_to_dummy_if_null(ops, sk_clone_security);
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001106 set_to_dummy_if_null(ops, sk_getsecid);
Venkat Yekkirala4237c752006-07-24 23:32:50 -07001107 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);
Trent Jaegerdf718372005-12-13 23:12:27 -08001111 #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);
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001116 set_to_dummy_if_null(ops, xfrm_policy_delete_security);
Trent Jaegerdf718372005-12-13 23:12:27 -08001117 set_to_dummy_if_null(ops, xfrm_state_alloc_security);
1118 set_to_dummy_if_null(ops, xfrm_state_free_security);
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001119 set_to_dummy_if_null(ops, xfrm_state_delete_security);
Trent Jaegerdf718372005-12-13 23:12:27 -08001120 set_to_dummy_if_null(ops, xfrm_policy_lookup);
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001121 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);
Trent Jaegerdf718372005-12-13 23:12:27 -08001124#endif /* CONFIG_SECURITY_NETWORK_XFRM */
David Howells29db9192005-10-30 15:02:44 -08001125#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
Linus Torvalds1da177e2005-04-16 15:20:36 -07001131}
1132