blob: 3ccfbbe973b6d3014ea9b8cf77015b206688bf6f [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/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
31static int dummy_ptrace (struct task_struct *parent, struct task_struct *child)
32{
33 return 0;
34}
35
36static 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;
Andrew Morgan72c2d582007-10-18 03:05:59 -070040 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;
Linus Torvalds1da177e2005-04-16 15:20:36 -070047 }
48 return 0;
49}
50
51static 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
59static 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
67static int dummy_acct (struct file *file)
68{
69 return 0;
70}
71
72static 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
79static int dummy_sysctl (ctl_table * table, int op)
80{
81 return 0;
82}
83
84static int dummy_quotactl (int cmds, int type, int id, struct super_block *sb)
85{
86 return 0;
87}
88
89static int dummy_quota_on (struct dentry *dentry)
90{
91 return 0;
92}
93
94static int dummy_syslog (int type)
95{
96 if ((type != 3 && type != 10) && current->euid)
97 return -EPERM;
98 return 0;
99}
100
101static int dummy_settime(struct timespec *ts, struct timezone *tz)
102{
103 if (!capable(CAP_SYS_TIME))
104 return -EPERM;
105 return 0;
106}
107
Alan Cox34b4e4a2007-08-22 14:01:28 -0700108static int dummy_vm_enough_memory(struct mm_struct *mm, long pages)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700109{
110 int cap_sys_admin = 0;
111
112 if (dummy_capable(current, CAP_SYS_ADMIN) == 0)
113 cap_sys_admin = 1;
Alan Cox34b4e4a2007-08-22 14:01:28 -0700114 return __vm_enough_memory(mm, pages, cap_sys_admin);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700115}
116
117static int dummy_bprm_alloc_security (struct linux_binprm *bprm)
118{
119 return 0;
120}
121
122static void dummy_bprm_free_security (struct linux_binprm *bprm)
123{
124 return;
125}
126
127static void dummy_bprm_apply_creds (struct linux_binprm *bprm, int unsafe)
128{
129 if (bprm->e_uid != current->uid || bprm->e_gid != current->gid) {
Kawai, Hidehiro6c5d5232007-07-19 01:48:27 -0700130 set_dumpable(current->mm, suid_dumpable);
Linus Torvalds1da177e2005-04-16 15:20:36 -0700131
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
144static void dummy_bprm_post_apply_creds (struct linux_binprm *bprm)
145{
146 return;
147}
148
149static int dummy_bprm_set_security (struct linux_binprm *bprm)
150{
151 return 0;
152}
153
154static int dummy_bprm_check_security (struct linux_binprm *bprm)
155{
156 return 0;
157}
158
159static 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
169static int dummy_sb_alloc_security (struct super_block *sb)
170{
171 return 0;
172}
173
174static void dummy_sb_free_security (struct super_block *sb)
175{
176 return;
177}
178
179static int dummy_sb_copy_data (struct file_system_type *type,
180 void *orig, void *copy)
181{
182 return 0;
183}
184
185static int dummy_sb_kern_mount (struct super_block *sb, void *data)
186{
187 return 0;
188}
189
David Howells726c3342006-06-23 02:02:58 -0700190static int dummy_sb_statfs (struct dentry *dentry)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700191{
192 return 0;
193}
194
195static int dummy_sb_mount (char *dev_name, struct nameidata *nd, char *type,
196 unsigned long flags, void *data)
197{
198 return 0;
199}
200
201static int dummy_sb_check_sb (struct vfsmount *mnt, struct nameidata *nd)
202{
203 return 0;
204}
205
206static int dummy_sb_umount (struct vfsmount *mnt, int flags)
207{
208 return 0;
209}
210
211static void dummy_sb_umount_close (struct vfsmount *mnt)
212{
213 return;
214}
215
216static void dummy_sb_umount_busy (struct vfsmount *mnt)
217{
218 return;
219}
220
221static void dummy_sb_post_remount (struct vfsmount *mnt, unsigned long flags,
222 void *data)
223{
224 return;
225}
226
227
228static void dummy_sb_post_mountroot (void)
229{
230 return;
231}
232
233static void dummy_sb_post_addmount (struct vfsmount *mnt, struct nameidata *nd)
234{
235 return;
236}
237
238static int dummy_sb_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
239{
240 return 0;
241}
242
243static void dummy_sb_post_pivotroot (struct nameidata *old_nd, struct nameidata *new_nd)
244{
245 return;
246}
247
248static int dummy_inode_alloc_security (struct inode *inode)
249{
250 return 0;
251}
252
253static void dummy_inode_free_security (struct inode *inode)
254{
255 return;
256}
257
Stephen Smalley5e41ff92005-09-09 13:01:35 -0700258static int dummy_inode_init_security (struct inode *inode, struct inode *dir,
259 char **name, void **value, size_t *len)
260{
261 return -EOPNOTSUPP;
262}
263
Linus Torvalds1da177e2005-04-16 15:20:36 -0700264static int dummy_inode_create (struct inode *inode, struct dentry *dentry,
265 int mask)
266{
267 return 0;
268}
269
Linus Torvalds1da177e2005-04-16 15:20:36 -0700270static int dummy_inode_link (struct dentry *old_dentry, struct inode *inode,
271 struct dentry *new_dentry)
272{
273 return 0;
274}
275
Linus Torvalds1da177e2005-04-16 15:20:36 -0700276static int dummy_inode_unlink (struct inode *inode, struct dentry *dentry)
277{
278 return 0;
279}
280
281static int dummy_inode_symlink (struct inode *inode, struct dentry *dentry,
282 const char *name)
283{
284 return 0;
285}
286
Linus Torvalds1da177e2005-04-16 15:20:36 -0700287static int dummy_inode_mkdir (struct inode *inode, struct dentry *dentry,
288 int mask)
289{
290 return 0;
291}
292
Linus Torvalds1da177e2005-04-16 15:20:36 -0700293static int dummy_inode_rmdir (struct inode *inode, struct dentry *dentry)
294{
295 return 0;
296}
297
298static int dummy_inode_mknod (struct inode *inode, struct dentry *dentry,
299 int mode, dev_t dev)
300{
301 return 0;
302}
303
Linus Torvalds1da177e2005-04-16 15:20:36 -0700304static int dummy_inode_rename (struct inode *old_inode,
305 struct dentry *old_dentry,
306 struct inode *new_inode,
307 struct dentry *new_dentry)
308{
309 return 0;
310}
311
Linus Torvalds1da177e2005-04-16 15:20:36 -0700312static int dummy_inode_readlink (struct dentry *dentry)
313{
314 return 0;
315}
316
317static int dummy_inode_follow_link (struct dentry *dentry,
318 struct nameidata *nameidata)
319{
320 return 0;
321}
322
323static int dummy_inode_permission (struct inode *inode, int mask, struct nameidata *nd)
324{
325 return 0;
326}
327
328static int dummy_inode_setattr (struct dentry *dentry, struct iattr *iattr)
329{
330 return 0;
331}
332
333static int dummy_inode_getattr (struct vfsmount *mnt, struct dentry *dentry)
334{
335 return 0;
336}
337
338static void dummy_inode_delete (struct inode *ino)
339{
340 return;
341}
342
343static int dummy_inode_setxattr (struct dentry *dentry, char *name, void *value,
344 size_t size, int flags)
345{
346 if (!strncmp(name, XATTR_SECURITY_PREFIX,
347 sizeof(XATTR_SECURITY_PREFIX) - 1) &&
348 !capable(CAP_SYS_ADMIN))
349 return -EPERM;
350 return 0;
351}
352
353static void dummy_inode_post_setxattr (struct dentry *dentry, char *name, void *value,
354 size_t size, int flags)
355{
356}
357
358static int dummy_inode_getxattr (struct dentry *dentry, char *name)
359{
360 return 0;
361}
362
363static int dummy_inode_listxattr (struct dentry *dentry)
364{
365 return 0;
366}
367
368static int dummy_inode_removexattr (struct dentry *dentry, char *name)
369{
370 if (!strncmp(name, XATTR_SECURITY_PREFIX,
371 sizeof(XATTR_SECURITY_PREFIX) - 1) &&
372 !capable(CAP_SYS_ADMIN))
373 return -EPERM;
374 return 0;
375}
376
Serge E. Hallynb5376772007-10-16 23:31:36 -0700377static int dummy_inode_need_killpriv(struct dentry *dentry)
378{
379 return 0;
380}
381
382static int dummy_inode_killpriv(struct dentry *dentry)
383{
384 return 0;
385}
386
Dustin Kirkland7306a0b2005-11-16 15:53:13 +0000387static 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 -0700388{
389 return -EOPNOTSUPP;
390}
391
392static int dummy_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
393{
394 return -EOPNOTSUPP;
395}
396
397static int dummy_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
398{
399 return 0;
400}
401
402static int dummy_file_permission (struct file *file, int mask)
403{
404 return 0;
405}
406
407static int dummy_file_alloc_security (struct file *file)
408{
409 return 0;
410}
411
412static void dummy_file_free_security (struct file *file)
413{
414 return;
415}
416
417static int dummy_file_ioctl (struct file *file, unsigned int command,
418 unsigned long arg)
419{
420 return 0;
421}
422
423static int dummy_file_mmap (struct file *file, unsigned long reqprot,
424 unsigned long prot,
Eric Parised032182007-06-28 15:55:21 -0400425 unsigned long flags,
426 unsigned long addr,
427 unsigned long addr_only)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700428{
Eric Parisab5a91a2007-11-26 18:47:46 -0500429 if ((addr < mmap_min_addr) && !capable(CAP_SYS_RAWIO))
Eric Parised032182007-06-28 15:55:21 -0400430 return -EACCES;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700431 return 0;
432}
433
434static int dummy_file_mprotect (struct vm_area_struct *vma,
435 unsigned long reqprot,
436 unsigned long prot)
437{
438 return 0;
439}
440
441static int dummy_file_lock (struct file *file, unsigned int cmd)
442{
443 return 0;
444}
445
446static int dummy_file_fcntl (struct file *file, unsigned int cmd,
447 unsigned long arg)
448{
449 return 0;
450}
451
452static int dummy_file_set_fowner (struct file *file)
453{
454 return 0;
455}
456
457static int dummy_file_send_sigiotask (struct task_struct *tsk,
458 struct fown_struct *fown, int sig)
459{
460 return 0;
461}
462
463static int dummy_file_receive (struct file *file)
464{
465 return 0;
466}
467
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +0900468static int dummy_dentry_open (struct file *file)
469{
470 return 0;
471}
472
Linus Torvalds1da177e2005-04-16 15:20:36 -0700473static int dummy_task_create (unsigned long clone_flags)
474{
475 return 0;
476}
477
478static int dummy_task_alloc_security (struct task_struct *p)
479{
480 return 0;
481}
482
483static void dummy_task_free_security (struct task_struct *p)
484{
485 return;
486}
487
488static int dummy_task_setuid (uid_t id0, uid_t id1, uid_t id2, int flags)
489{
490 return 0;
491}
492
493static int dummy_task_post_setuid (uid_t id0, uid_t id1, uid_t id2, int flags)
494{
495 dummy_capget(current, &current->cap_effective, &current->cap_inheritable, &current->cap_permitted);
496 return 0;
497}
498
499static int dummy_task_setgid (gid_t id0, gid_t id1, gid_t id2, int flags)
500{
501 return 0;
502}
503
504static int dummy_task_setpgid (struct task_struct *p, pid_t pgid)
505{
506 return 0;
507}
508
509static int dummy_task_getpgid (struct task_struct *p)
510{
511 return 0;
512}
513
514static int dummy_task_getsid (struct task_struct *p)
515{
516 return 0;
517}
518
David Quigleyf9008e42006-06-30 01:55:46 -0700519static void dummy_task_getsecid (struct task_struct *p, u32 *secid)
520{ }
521
Linus Torvalds1da177e2005-04-16 15:20:36 -0700522static int dummy_task_setgroups (struct group_info *group_info)
523{
524 return 0;
525}
526
527static int dummy_task_setnice (struct task_struct *p, int nice)
528{
529 return 0;
530}
531
James Morris03e68062006-06-23 02:03:58 -0700532static int dummy_task_setioprio (struct task_struct *p, int ioprio)
533{
534 return 0;
535}
536
David Quigleya1836a42006-06-30 01:55:49 -0700537static int dummy_task_getioprio (struct task_struct *p)
538{
539 return 0;
540}
541
Linus Torvalds1da177e2005-04-16 15:20:36 -0700542static int dummy_task_setrlimit (unsigned int resource, struct rlimit *new_rlim)
543{
544 return 0;
545}
546
547static int dummy_task_setscheduler (struct task_struct *p, int policy,
548 struct sched_param *lp)
549{
550 return 0;
551}
552
553static int dummy_task_getscheduler (struct task_struct *p)
554{
555 return 0;
556}
557
David Quigley35601542006-06-23 02:04:01 -0700558static int dummy_task_movememory (struct task_struct *p)
559{
560 return 0;
561}
562
Linus Torvalds1da177e2005-04-16 15:20:36 -0700563static int dummy_task_wait (struct task_struct *p)
564{
565 return 0;
566}
567
568static int dummy_task_kill (struct task_struct *p, struct siginfo *info,
David Quigleyf9008e42006-06-30 01:55:46 -0700569 int sig, u32 secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700570{
571 return 0;
572}
573
574static int dummy_task_prctl (int option, unsigned long arg2, unsigned long arg3,
575 unsigned long arg4, unsigned long arg5)
576{
577 return 0;
578}
579
580static void dummy_task_reparent_to_init (struct task_struct *p)
581{
582 p->euid = p->fsuid = 0;
583 return;
584}
585
586static void dummy_task_to_inode(struct task_struct *p, struct inode *inode)
587{ }
588
589static int dummy_ipc_permission (struct kern_ipc_perm *ipcp, short flag)
590{
591 return 0;
592}
593
594static int dummy_msg_msg_alloc_security (struct msg_msg *msg)
595{
596 return 0;
597}
598
599static void dummy_msg_msg_free_security (struct msg_msg *msg)
600{
601 return;
602}
603
604static int dummy_msg_queue_alloc_security (struct msg_queue *msq)
605{
606 return 0;
607}
608
609static void dummy_msg_queue_free_security (struct msg_queue *msq)
610{
611 return;
612}
613
614static int dummy_msg_queue_associate (struct msg_queue *msq,
615 int msqflg)
616{
617 return 0;
618}
619
620static int dummy_msg_queue_msgctl (struct msg_queue *msq, int cmd)
621{
622 return 0;
623}
624
625static int dummy_msg_queue_msgsnd (struct msg_queue *msq, struct msg_msg *msg,
626 int msgflg)
627{
628 return 0;
629}
630
631static int dummy_msg_queue_msgrcv (struct msg_queue *msq, struct msg_msg *msg,
632 struct task_struct *target, long type,
633 int mode)
634{
635 return 0;
636}
637
638static int dummy_shm_alloc_security (struct shmid_kernel *shp)
639{
640 return 0;
641}
642
643static void dummy_shm_free_security (struct shmid_kernel *shp)
644{
645 return;
646}
647
648static int dummy_shm_associate (struct shmid_kernel *shp, int shmflg)
649{
650 return 0;
651}
652
653static int dummy_shm_shmctl (struct shmid_kernel *shp, int cmd)
654{
655 return 0;
656}
657
658static int dummy_shm_shmat (struct shmid_kernel *shp, char __user *shmaddr,
659 int shmflg)
660{
661 return 0;
662}
663
664static int dummy_sem_alloc_security (struct sem_array *sma)
665{
666 return 0;
667}
668
669static void dummy_sem_free_security (struct sem_array *sma)
670{
671 return;
672}
673
674static int dummy_sem_associate (struct sem_array *sma, int semflg)
675{
676 return 0;
677}
678
679static int dummy_sem_semctl (struct sem_array *sma, int cmd)
680{
681 return 0;
682}
683
684static int dummy_sem_semop (struct sem_array *sma,
685 struct sembuf *sops, unsigned nsops, int alter)
686{
687 return 0;
688}
689
690static int dummy_netlink_send (struct sock *sk, struct sk_buff *skb)
691{
692 NETLINK_CB(skb).eff_cap = current->cap_effective;
693 return 0;
694}
695
Darrel Goeddelc7bdb542006-06-27 13:26:11 -0700696static int dummy_netlink_recv (struct sk_buff *skb, int cap)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700697{
Darrel Goeddelc7bdb542006-06-27 13:26:11 -0700698 if (!cap_raised (NETLINK_CB (skb).eff_cap, cap))
Linus Torvalds1da177e2005-04-16 15:20:36 -0700699 return -EPERM;
700 return 0;
701}
702
703#ifdef CONFIG_SECURITY_NETWORK
704static int dummy_unix_stream_connect (struct socket *sock,
705 struct socket *other,
706 struct sock *newsk)
707{
708 return 0;
709}
710
711static int dummy_unix_may_send (struct socket *sock,
712 struct socket *other)
713{
714 return 0;
715}
716
717static int dummy_socket_create (int family, int type,
718 int protocol, int kern)
719{
720 return 0;
721}
722
Venkat Yekkirala7420ed22006-08-04 23:17:57 -0700723static int dummy_socket_post_create (struct socket *sock, int family, int type,
724 int protocol, int kern)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700725{
Venkat Yekkirala7420ed22006-08-04 23:17:57 -0700726 return 0;
Linus Torvalds1da177e2005-04-16 15:20:36 -0700727}
728
729static int dummy_socket_bind (struct socket *sock, struct sockaddr *address,
730 int addrlen)
731{
732 return 0;
733}
734
735static int dummy_socket_connect (struct socket *sock, struct sockaddr *address,
736 int addrlen)
737{
738 return 0;
739}
740
741static int dummy_socket_listen (struct socket *sock, int backlog)
742{
743 return 0;
744}
745
746static int dummy_socket_accept (struct socket *sock, struct socket *newsock)
747{
748 return 0;
749}
750
751static void dummy_socket_post_accept (struct socket *sock,
752 struct socket *newsock)
753{
754 return;
755}
756
757static int dummy_socket_sendmsg (struct socket *sock, struct msghdr *msg,
758 int size)
759{
760 return 0;
761}
762
763static int dummy_socket_recvmsg (struct socket *sock, struct msghdr *msg,
764 int size, int flags)
765{
766 return 0;
767}
768
769static int dummy_socket_getsockname (struct socket *sock)
770{
771 return 0;
772}
773
774static int dummy_socket_getpeername (struct socket *sock)
775{
776 return 0;
777}
778
779static int dummy_socket_setsockopt (struct socket *sock, int level, int optname)
780{
781 return 0;
782}
783
784static int dummy_socket_getsockopt (struct socket *sock, int level, int optname)
785{
786 return 0;
787}
788
789static int dummy_socket_shutdown (struct socket *sock, int how)
790{
791 return 0;
792}
793
794static int dummy_socket_sock_rcv_skb (struct sock *sk, struct sk_buff *skb)
795{
796 return 0;
797}
798
Catherine Zhang2c7946a2006-03-20 22:41:23 -0800799static int dummy_socket_getpeersec_stream(struct socket *sock, char __user *optval,
800 int __user *optlen, unsigned len)
801{
802 return -ENOPROTOOPT;
803}
804
Catherine Zhangdc49c1f2006-08-02 14:12:06 -0700805static int dummy_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700806{
807 return -ENOPROTOOPT;
808}
809
Al Viro7d877f32005-10-21 03:20:43 -0400810static inline int dummy_sk_alloc_security (struct sock *sk, int family, gfp_t priority)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700811{
812 return 0;
813}
814
815static inline void dummy_sk_free_security (struct sock *sk)
816{
817}
Trent Jaegerdf718372005-12-13 23:12:27 -0800818
Venkat Yekkirala892c1412006-08-04 23:08:56 -0700819static inline void dummy_sk_clone_security (const struct sock *sk, struct sock *newsk)
820{
821}
822
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -0700823static inline void dummy_sk_getsecid(struct sock *sk, u32 *secid)
Trent Jaegerdf718372005-12-13 23:12:27 -0800824{
Trent Jaegerdf718372005-12-13 23:12:27 -0800825}
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700826
827static inline void dummy_sock_graft(struct sock* sk, struct socket *parent)
828{
829}
830
831static inline int dummy_inet_conn_request(struct sock *sk,
832 struct sk_buff *skb, struct request_sock *req)
833{
834 return 0;
835}
836
837static inline void dummy_inet_csk_clone(struct sock *newsk,
838 const struct request_sock *req)
839{
840}
841
Venkat Yekkirala6b877692006-11-08 17:04:09 -0600842static inline void dummy_inet_conn_established(struct sock *sk,
843 struct sk_buff *skb)
844{
845}
846
Venkat Yekkirala4237c752006-07-24 23:32:50 -0700847static inline void dummy_req_classify_flow(const struct request_sock *req,
848 struct flowi *fl)
849{
850}
Linus Torvalds1da177e2005-04-16 15:20:36 -0700851#endif /* CONFIG_SECURITY_NETWORK */
852
Trent Jaegerdf718372005-12-13 23:12:27 -0800853#ifdef CONFIG_SECURITY_NETWORK_XFRM
Venkat Yekkiralacb969f02006-07-24 23:32:20 -0700854static int dummy_xfrm_policy_alloc_security(struct xfrm_policy *xp,
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -0600855 struct xfrm_user_sec_ctx *sec_ctx)
Trent Jaegerdf718372005-12-13 23:12:27 -0800856{
857 return 0;
858}
859
860static inline int dummy_xfrm_policy_clone_security(struct xfrm_policy *old, struct xfrm_policy *new)
861{
862 return 0;
863}
864
865static void dummy_xfrm_policy_free_security(struct xfrm_policy *xp)
866{
867}
868
Catherine Zhangc8c05a82006-06-08 23:39:49 -0700869static int dummy_xfrm_policy_delete_security(struct xfrm_policy *xp)
870{
871 return 0;
872}
873
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700874static int dummy_xfrm_state_alloc_security(struct xfrm_state *x,
Venkat Yekkiralac1a856c2006-11-08 17:03:44 -0600875 struct xfrm_user_sec_ctx *sec_ctx, u32 secid)
Trent Jaegerdf718372005-12-13 23:12:27 -0800876{
877 return 0;
878}
879
880static void dummy_xfrm_state_free_security(struct xfrm_state *x)
881{
882}
883
Catherine Zhangc8c05a82006-06-08 23:39:49 -0700884static int dummy_xfrm_state_delete_security(struct xfrm_state *x)
885{
886 return 0;
887}
888
Trent Jaegerdf718372005-12-13 23:12:27 -0800889static int dummy_xfrm_policy_lookup(struct xfrm_policy *xp, u32 sk_sid, u8 dir)
890{
891 return 0;
892}
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700893
894static int dummy_xfrm_state_pol_flow_match(struct xfrm_state *x,
895 struct xfrm_policy *xp, struct flowi *fl)
896{
897 return 1;
898}
899
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -0700900static int dummy_xfrm_decode_session(struct sk_buff *skb, u32 *fl, int ckall)
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -0700901{
902 return 0;
903}
904
Trent Jaegerdf718372005-12-13 23:12:27 -0800905#endif /* CONFIG_SECURITY_NETWORK_XFRM */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700906static int dummy_register_security (const char *name, struct security_operations *ops)
907{
908 return -EINVAL;
909}
910
Linus Torvalds1da177e2005-04-16 15:20:36 -0700911static void dummy_d_instantiate (struct dentry *dentry, struct inode *inode)
912{
913 return;
914}
915
Al Viro04ff9702007-03-12 16:17:58 +0000916static int dummy_getprocattr(struct task_struct *p, char *name, char **value)
Linus Torvalds1da177e2005-04-16 15:20:36 -0700917{
918 return -EINVAL;
919}
920
921static int dummy_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
922{
923 return -EINVAL;
924}
925
Catherine Zhangdc49c1f2006-08-02 14:12:06 -0700926static int dummy_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
927{
928 return -EOPNOTSUPP;
929}
930
931static void dummy_release_secctx(char *secdata, u32 seclen)
932{
933}
934
David Howells29db9192005-10-30 15:02:44 -0800935#ifdef CONFIG_KEYS
David Howells7e047ef2006-06-26 00:24:50 -0700936static inline int dummy_key_alloc(struct key *key, struct task_struct *ctx,
937 unsigned long flags)
David Howells29db9192005-10-30 15:02:44 -0800938{
939 return 0;
940}
941
942static inline void dummy_key_free(struct key *key)
943{
944}
945
946static inline int dummy_key_permission(key_ref_t key_ref,
947 struct task_struct *context,
948 key_perm_t perm)
949{
950 return 0;
951}
952#endif /* CONFIG_KEYS */
Linus Torvalds1da177e2005-04-16 15:20:36 -0700953
954struct security_operations dummy_security_ops;
955
956#define set_to_dummy_if_null(ops, function) \
957 do { \
958 if (!ops->function) { \
959 ops->function = dummy_##function; \
960 pr_debug("Had to override the " #function \
961 " security operation with the dummy one.\n");\
962 } \
963 } while (0)
964
965void security_fixup_ops (struct security_operations *ops)
966{
967 set_to_dummy_if_null(ops, ptrace);
968 set_to_dummy_if_null(ops, capget);
969 set_to_dummy_if_null(ops, capset_check);
970 set_to_dummy_if_null(ops, capset_set);
971 set_to_dummy_if_null(ops, acct);
972 set_to_dummy_if_null(ops, capable);
973 set_to_dummy_if_null(ops, quotactl);
974 set_to_dummy_if_null(ops, quota_on);
975 set_to_dummy_if_null(ops, sysctl);
976 set_to_dummy_if_null(ops, syslog);
977 set_to_dummy_if_null(ops, settime);
978 set_to_dummy_if_null(ops, vm_enough_memory);
979 set_to_dummy_if_null(ops, bprm_alloc_security);
980 set_to_dummy_if_null(ops, bprm_free_security);
981 set_to_dummy_if_null(ops, bprm_apply_creds);
982 set_to_dummy_if_null(ops, bprm_post_apply_creds);
983 set_to_dummy_if_null(ops, bprm_set_security);
984 set_to_dummy_if_null(ops, bprm_check_security);
985 set_to_dummy_if_null(ops, bprm_secureexec);
986 set_to_dummy_if_null(ops, sb_alloc_security);
987 set_to_dummy_if_null(ops, sb_free_security);
988 set_to_dummy_if_null(ops, sb_copy_data);
989 set_to_dummy_if_null(ops, sb_kern_mount);
990 set_to_dummy_if_null(ops, sb_statfs);
991 set_to_dummy_if_null(ops, sb_mount);
992 set_to_dummy_if_null(ops, sb_check_sb);
993 set_to_dummy_if_null(ops, sb_umount);
994 set_to_dummy_if_null(ops, sb_umount_close);
995 set_to_dummy_if_null(ops, sb_umount_busy);
996 set_to_dummy_if_null(ops, sb_post_remount);
997 set_to_dummy_if_null(ops, sb_post_mountroot);
998 set_to_dummy_if_null(ops, sb_post_addmount);
999 set_to_dummy_if_null(ops, sb_pivotroot);
1000 set_to_dummy_if_null(ops, sb_post_pivotroot);
1001 set_to_dummy_if_null(ops, inode_alloc_security);
1002 set_to_dummy_if_null(ops, inode_free_security);
Stephen Smalley5e41ff92005-09-09 13:01:35 -07001003 set_to_dummy_if_null(ops, inode_init_security);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001004 set_to_dummy_if_null(ops, inode_create);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001005 set_to_dummy_if_null(ops, inode_link);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001006 set_to_dummy_if_null(ops, inode_unlink);
1007 set_to_dummy_if_null(ops, inode_symlink);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001008 set_to_dummy_if_null(ops, inode_mkdir);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001009 set_to_dummy_if_null(ops, inode_rmdir);
1010 set_to_dummy_if_null(ops, inode_mknod);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001011 set_to_dummy_if_null(ops, inode_rename);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001012 set_to_dummy_if_null(ops, inode_readlink);
1013 set_to_dummy_if_null(ops, inode_follow_link);
1014 set_to_dummy_if_null(ops, inode_permission);
1015 set_to_dummy_if_null(ops, inode_setattr);
1016 set_to_dummy_if_null(ops, inode_getattr);
1017 set_to_dummy_if_null(ops, inode_delete);
1018 set_to_dummy_if_null(ops, inode_setxattr);
1019 set_to_dummy_if_null(ops, inode_post_setxattr);
1020 set_to_dummy_if_null(ops, inode_getxattr);
1021 set_to_dummy_if_null(ops, inode_listxattr);
1022 set_to_dummy_if_null(ops, inode_removexattr);
Serge E. Hallynb5376772007-10-16 23:31:36 -07001023 set_to_dummy_if_null(ops, inode_need_killpriv);
1024 set_to_dummy_if_null(ops, inode_killpriv);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001025 set_to_dummy_if_null(ops, inode_getsecurity);
1026 set_to_dummy_if_null(ops, inode_setsecurity);
1027 set_to_dummy_if_null(ops, inode_listsecurity);
1028 set_to_dummy_if_null(ops, file_permission);
1029 set_to_dummy_if_null(ops, file_alloc_security);
1030 set_to_dummy_if_null(ops, file_free_security);
1031 set_to_dummy_if_null(ops, file_ioctl);
1032 set_to_dummy_if_null(ops, file_mmap);
1033 set_to_dummy_if_null(ops, file_mprotect);
1034 set_to_dummy_if_null(ops, file_lock);
1035 set_to_dummy_if_null(ops, file_fcntl);
1036 set_to_dummy_if_null(ops, file_set_fowner);
1037 set_to_dummy_if_null(ops, file_send_sigiotask);
1038 set_to_dummy_if_null(ops, file_receive);
Yuichi Nakamura788e7dd2007-09-14 09:27:07 +09001039 set_to_dummy_if_null(ops, dentry_open);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001040 set_to_dummy_if_null(ops, task_create);
1041 set_to_dummy_if_null(ops, task_alloc_security);
1042 set_to_dummy_if_null(ops, task_free_security);
1043 set_to_dummy_if_null(ops, task_setuid);
1044 set_to_dummy_if_null(ops, task_post_setuid);
1045 set_to_dummy_if_null(ops, task_setgid);
1046 set_to_dummy_if_null(ops, task_setpgid);
1047 set_to_dummy_if_null(ops, task_getpgid);
1048 set_to_dummy_if_null(ops, task_getsid);
David Quigleyf9008e42006-06-30 01:55:46 -07001049 set_to_dummy_if_null(ops, task_getsecid);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001050 set_to_dummy_if_null(ops, task_setgroups);
1051 set_to_dummy_if_null(ops, task_setnice);
James Morris03e68062006-06-23 02:03:58 -07001052 set_to_dummy_if_null(ops, task_setioprio);
David Quigleya1836a42006-06-30 01:55:49 -07001053 set_to_dummy_if_null(ops, task_getioprio);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001054 set_to_dummy_if_null(ops, task_setrlimit);
1055 set_to_dummy_if_null(ops, task_setscheduler);
1056 set_to_dummy_if_null(ops, task_getscheduler);
David Quigley35601542006-06-23 02:04:01 -07001057 set_to_dummy_if_null(ops, task_movememory);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001058 set_to_dummy_if_null(ops, task_wait);
1059 set_to_dummy_if_null(ops, task_kill);
1060 set_to_dummy_if_null(ops, task_prctl);
1061 set_to_dummy_if_null(ops, task_reparent_to_init);
1062 set_to_dummy_if_null(ops, task_to_inode);
1063 set_to_dummy_if_null(ops, ipc_permission);
1064 set_to_dummy_if_null(ops, msg_msg_alloc_security);
1065 set_to_dummy_if_null(ops, msg_msg_free_security);
1066 set_to_dummy_if_null(ops, msg_queue_alloc_security);
1067 set_to_dummy_if_null(ops, msg_queue_free_security);
1068 set_to_dummy_if_null(ops, msg_queue_associate);
1069 set_to_dummy_if_null(ops, msg_queue_msgctl);
1070 set_to_dummy_if_null(ops, msg_queue_msgsnd);
1071 set_to_dummy_if_null(ops, msg_queue_msgrcv);
1072 set_to_dummy_if_null(ops, shm_alloc_security);
1073 set_to_dummy_if_null(ops, shm_free_security);
1074 set_to_dummy_if_null(ops, shm_associate);
1075 set_to_dummy_if_null(ops, shm_shmctl);
1076 set_to_dummy_if_null(ops, shm_shmat);
1077 set_to_dummy_if_null(ops, sem_alloc_security);
1078 set_to_dummy_if_null(ops, sem_free_security);
1079 set_to_dummy_if_null(ops, sem_associate);
1080 set_to_dummy_if_null(ops, sem_semctl);
1081 set_to_dummy_if_null(ops, sem_semop);
1082 set_to_dummy_if_null(ops, netlink_send);
1083 set_to_dummy_if_null(ops, netlink_recv);
1084 set_to_dummy_if_null(ops, register_security);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001085 set_to_dummy_if_null(ops, d_instantiate);
1086 set_to_dummy_if_null(ops, getprocattr);
1087 set_to_dummy_if_null(ops, setprocattr);
Catherine Zhangdc49c1f2006-08-02 14:12:06 -07001088 set_to_dummy_if_null(ops, secid_to_secctx);
1089 set_to_dummy_if_null(ops, release_secctx);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001090#ifdef CONFIG_SECURITY_NETWORK
1091 set_to_dummy_if_null(ops, unix_stream_connect);
1092 set_to_dummy_if_null(ops, unix_may_send);
1093 set_to_dummy_if_null(ops, socket_create);
1094 set_to_dummy_if_null(ops, socket_post_create);
1095 set_to_dummy_if_null(ops, socket_bind);
1096 set_to_dummy_if_null(ops, socket_connect);
1097 set_to_dummy_if_null(ops, socket_listen);
1098 set_to_dummy_if_null(ops, socket_accept);
1099 set_to_dummy_if_null(ops, socket_post_accept);
1100 set_to_dummy_if_null(ops, socket_sendmsg);
1101 set_to_dummy_if_null(ops, socket_recvmsg);
1102 set_to_dummy_if_null(ops, socket_getsockname);
1103 set_to_dummy_if_null(ops, socket_getpeername);
1104 set_to_dummy_if_null(ops, socket_setsockopt);
1105 set_to_dummy_if_null(ops, socket_getsockopt);
1106 set_to_dummy_if_null(ops, socket_shutdown);
1107 set_to_dummy_if_null(ops, socket_sock_rcv_skb);
Arnaldo Carvalho de Meloc841aa02006-03-20 22:47:37 -08001108 set_to_dummy_if_null(ops, socket_getpeersec_stream);
1109 set_to_dummy_if_null(ops, socket_getpeersec_dgram);
Linus Torvalds1da177e2005-04-16 15:20:36 -07001110 set_to_dummy_if_null(ops, sk_alloc_security);
1111 set_to_dummy_if_null(ops, sk_free_security);
Venkat Yekkirala892c1412006-08-04 23:08:56 -07001112 set_to_dummy_if_null(ops, sk_clone_security);
Venkat Yekkiralabeb8d132006-08-04 23:12:42 -07001113 set_to_dummy_if_null(ops, sk_getsecid);
Venkat Yekkirala4237c752006-07-24 23:32:50 -07001114 set_to_dummy_if_null(ops, sock_graft);
1115 set_to_dummy_if_null(ops, inet_conn_request);
1116 set_to_dummy_if_null(ops, inet_csk_clone);
Venkat Yekkirala6b877692006-11-08 17:04:09 -06001117 set_to_dummy_if_null(ops, inet_conn_established);
Venkat Yekkirala4237c752006-07-24 23:32:50 -07001118 set_to_dummy_if_null(ops, req_classify_flow);
Trent Jaegerdf718372005-12-13 23:12:27 -08001119 #endif /* CONFIG_SECURITY_NETWORK */
1120#ifdef CONFIG_SECURITY_NETWORK_XFRM
1121 set_to_dummy_if_null(ops, xfrm_policy_alloc_security);
1122 set_to_dummy_if_null(ops, xfrm_policy_clone_security);
1123 set_to_dummy_if_null(ops, xfrm_policy_free_security);
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001124 set_to_dummy_if_null(ops, xfrm_policy_delete_security);
Trent Jaegerdf718372005-12-13 23:12:27 -08001125 set_to_dummy_if_null(ops, xfrm_state_alloc_security);
1126 set_to_dummy_if_null(ops, xfrm_state_free_security);
Catherine Zhangc8c05a82006-06-08 23:39:49 -07001127 set_to_dummy_if_null(ops, xfrm_state_delete_security);
Trent Jaegerdf718372005-12-13 23:12:27 -08001128 set_to_dummy_if_null(ops, xfrm_policy_lookup);
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001129 set_to_dummy_if_null(ops, xfrm_state_pol_flow_match);
Venkat Yekkiralae0d1caa2006-07-24 23:29:07 -07001130 set_to_dummy_if_null(ops, xfrm_decode_session);
Trent Jaegerdf718372005-12-13 23:12:27 -08001131#endif /* CONFIG_SECURITY_NETWORK_XFRM */
David Howells29db9192005-10-30 15:02:44 -08001132#ifdef CONFIG_KEYS
1133 set_to_dummy_if_null(ops, key_alloc);
1134 set_to_dummy_if_null(ops, key_free);
1135 set_to_dummy_if_null(ops, key_permission);
1136#endif /* CONFIG_KEYS */
1137
Linus Torvalds1da177e2005-04-16 15:20:36 -07001138}
1139