SELinux: do not allocate stack space for AVC data unless needed
[linux-2.6.git] / security / security.c
1 /*
2  * Security plug functions
3  *
4  * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5  * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6  * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7  *
8  *      This program is free software; you can redistribute it and/or modify
9  *      it under the terms of the GNU General Public License as published by
10  *      the Free Software Foundation; either version 2 of the License, or
11  *      (at your option) any later version.
12  */
13
14 #include <linux/capability.h>
15 #include <linux/module.h>
16 #include <linux/init.h>
17 #include <linux/kernel.h>
18 #include <linux/security.h>
19 #include <linux/integrity.h>
20 #include <linux/ima.h>
21 #include <linux/evm.h>
22 #include <linux/fsnotify.h>
23 #include <net/flow.h>
24
25 #define MAX_LSM_EVM_XATTR       2
26
27 /* Boot-time LSM user choice */
28 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
29         CONFIG_DEFAULT_SECURITY;
30
31 static struct security_operations *security_ops;
32 static struct security_operations default_security_ops = {
33         .name   = "default",
34 };
35
36 static inline int __init verify(struct security_operations *ops)
37 {
38         /* verify the security_operations structure exists */
39         if (!ops)
40                 return -EINVAL;
41         security_fixup_ops(ops);
42         return 0;
43 }
44
45 static void __init do_security_initcalls(void)
46 {
47         initcall_t *call;
48         call = __security_initcall_start;
49         while (call < __security_initcall_end) {
50                 (*call) ();
51                 call++;
52         }
53 }
54
55 /**
56  * security_init - initializes the security framework
57  *
58  * This should be called early in the kernel initialization sequence.
59  */
60 int __init security_init(void)
61 {
62         printk(KERN_INFO "Security Framework initialized\n");
63
64         security_fixup_ops(&default_security_ops);
65         security_ops = &default_security_ops;
66         do_security_initcalls();
67
68         return 0;
69 }
70
71 void reset_security_ops(void)
72 {
73         security_ops = &default_security_ops;
74 }
75
76 /* Save user chosen LSM */
77 static int __init choose_lsm(char *str)
78 {
79         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
80         return 1;
81 }
82 __setup("security=", choose_lsm);
83
84 /**
85  * security_module_enable - Load given security module on boot ?
86  * @ops: a pointer to the struct security_operations that is to be checked.
87  *
88  * Each LSM must pass this method before registering its own operations
89  * to avoid security registration races. This method may also be used
90  * to check if your LSM is currently loaded during kernel initialization.
91  *
92  * Return true if:
93  *      -The passed LSM is the one chosen by user at boot time,
94  *      -or the passed LSM is configured as the default and the user did not
95  *       choose an alternate LSM at boot time.
96  * Otherwise, return false.
97  */
98 int __init security_module_enable(struct security_operations *ops)
99 {
100         return !strcmp(ops->name, chosen_lsm);
101 }
102
103 /**
104  * register_security - registers a security framework with the kernel
105  * @ops: a pointer to the struct security_options that is to be registered
106  *
107  * This function allows a security module to register itself with the
108  * kernel security subsystem.  Some rudimentary checking is done on the @ops
109  * value passed to this function. You'll need to check first if your LSM
110  * is allowed to register its @ops by calling security_module_enable(@ops).
111  *
112  * If there is already a security module registered with the kernel,
113  * an error will be returned.  Otherwise %0 is returned on success.
114  */
115 int __init register_security(struct security_operations *ops)
116 {
117         if (verify(ops)) {
118                 printk(KERN_DEBUG "%s could not verify "
119                        "security_operations structure.\n", __func__);
120                 return -EINVAL;
121         }
122
123         if (security_ops != &default_security_ops)
124                 return -EAGAIN;
125
126         security_ops = ops;
127
128         return 0;
129 }
130
131 /* Security operations */
132
133 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
134 {
135         return security_ops->ptrace_access_check(child, mode);
136 }
137
138 int security_ptrace_traceme(struct task_struct *parent)
139 {
140         return security_ops->ptrace_traceme(parent);
141 }
142
143 int security_capget(struct task_struct *target,
144                      kernel_cap_t *effective,
145                      kernel_cap_t *inheritable,
146                      kernel_cap_t *permitted)
147 {
148         return security_ops->capget(target, effective, inheritable, permitted);
149 }
150
151 int security_capset(struct cred *new, const struct cred *old,
152                     const kernel_cap_t *effective,
153                     const kernel_cap_t *inheritable,
154                     const kernel_cap_t *permitted)
155 {
156         return security_ops->capset(new, old,
157                                     effective, inheritable, permitted);
158 }
159
160 int security_capable(const struct cred *cred, struct user_namespace *ns,
161                      int cap)
162 {
163         return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT);
164 }
165
166 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
167                              int cap)
168 {
169         return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
170 }
171
172 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
173 {
174         return security_ops->quotactl(cmds, type, id, sb);
175 }
176
177 int security_quota_on(struct dentry *dentry)
178 {
179         return security_ops->quota_on(dentry);
180 }
181
182 int security_syslog(int type)
183 {
184         return security_ops->syslog(type);
185 }
186
187 int security_settime(const struct timespec *ts, const struct timezone *tz)
188 {
189         return security_ops->settime(ts, tz);
190 }
191
192 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
193 {
194         return security_ops->vm_enough_memory(mm, pages);
195 }
196
197 int security_bprm_set_creds(struct linux_binprm *bprm)
198 {
199         return security_ops->bprm_set_creds(bprm);
200 }
201
202 int security_bprm_check(struct linux_binprm *bprm)
203 {
204         int ret;
205
206         ret = security_ops->bprm_check_security(bprm);
207         if (ret)
208                 return ret;
209         return ima_bprm_check(bprm);
210 }
211
212 void security_bprm_committing_creds(struct linux_binprm *bprm)
213 {
214         security_ops->bprm_committing_creds(bprm);
215 }
216
217 void security_bprm_committed_creds(struct linux_binprm *bprm)
218 {
219         security_ops->bprm_committed_creds(bprm);
220 }
221
222 int security_bprm_secureexec(struct linux_binprm *bprm)
223 {
224         return security_ops->bprm_secureexec(bprm);
225 }
226
227 int security_sb_alloc(struct super_block *sb)
228 {
229         return security_ops->sb_alloc_security(sb);
230 }
231
232 void security_sb_free(struct super_block *sb)
233 {
234         security_ops->sb_free_security(sb);
235 }
236
237 int security_sb_copy_data(char *orig, char *copy)
238 {
239         return security_ops->sb_copy_data(orig, copy);
240 }
241 EXPORT_SYMBOL(security_sb_copy_data);
242
243 int security_sb_remount(struct super_block *sb, void *data)
244 {
245         return security_ops->sb_remount(sb, data);
246 }
247
248 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
249 {
250         return security_ops->sb_kern_mount(sb, flags, data);
251 }
252
253 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
254 {
255         return security_ops->sb_show_options(m, sb);
256 }
257
258 int security_sb_statfs(struct dentry *dentry)
259 {
260         return security_ops->sb_statfs(dentry);
261 }
262
263 int security_sb_mount(char *dev_name, struct path *path,
264                        char *type, unsigned long flags, void *data)
265 {
266         return security_ops->sb_mount(dev_name, path, type, flags, data);
267 }
268
269 int security_sb_umount(struct vfsmount *mnt, int flags)
270 {
271         return security_ops->sb_umount(mnt, flags);
272 }
273
274 int security_sb_pivotroot(struct path *old_path, struct path *new_path)
275 {
276         return security_ops->sb_pivotroot(old_path, new_path);
277 }
278
279 int security_sb_set_mnt_opts(struct super_block *sb,
280                                 struct security_mnt_opts *opts)
281 {
282         return security_ops->sb_set_mnt_opts(sb, opts);
283 }
284 EXPORT_SYMBOL(security_sb_set_mnt_opts);
285
286 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
287                                 struct super_block *newsb)
288 {
289         security_ops->sb_clone_mnt_opts(oldsb, newsb);
290 }
291 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
292
293 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
294 {
295         return security_ops->sb_parse_opts_str(options, opts);
296 }
297 EXPORT_SYMBOL(security_sb_parse_opts_str);
298
299 int security_inode_alloc(struct inode *inode)
300 {
301         inode->i_security = NULL;
302         return security_ops->inode_alloc_security(inode);
303 }
304
305 void security_inode_free(struct inode *inode)
306 {
307         integrity_inode_free(inode);
308         security_ops->inode_free_security(inode);
309 }
310
311 int security_inode_init_security(struct inode *inode, struct inode *dir,
312                                  const struct qstr *qstr,
313                                  const initxattrs initxattrs, void *fs_data)
314 {
315         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
316         struct xattr *lsm_xattr, *evm_xattr, *xattr;
317         int ret;
318
319         if (unlikely(IS_PRIVATE(inode)))
320                 return 0;
321
322         memset(new_xattrs, 0, sizeof new_xattrs);
323         if (!initxattrs)
324                 return security_ops->inode_init_security(inode, dir, qstr,
325                                                          NULL, NULL, NULL);
326         lsm_xattr = new_xattrs;
327         ret = security_ops->inode_init_security(inode, dir, qstr,
328                                                 &lsm_xattr->name,
329                                                 &lsm_xattr->value,
330                                                 &lsm_xattr->value_len);
331         if (ret)
332                 goto out;
333
334         evm_xattr = lsm_xattr + 1;
335         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
336         if (ret)
337                 goto out;
338         ret = initxattrs(inode, new_xattrs, fs_data);
339 out:
340         for (xattr = new_xattrs; xattr->name != NULL; xattr++) {
341                 kfree(xattr->name);
342                 kfree(xattr->value);
343         }
344         return (ret == -EOPNOTSUPP) ? 0 : ret;
345 }
346 EXPORT_SYMBOL(security_inode_init_security);
347
348 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
349                                      const struct qstr *qstr, char **name,
350                                      void **value, size_t *len)
351 {
352         if (unlikely(IS_PRIVATE(inode)))
353                 return -EOPNOTSUPP;
354         return security_ops->inode_init_security(inode, dir, qstr, name, value,
355                                                  len);
356 }
357 EXPORT_SYMBOL(security_old_inode_init_security);
358
359 #ifdef CONFIG_SECURITY_PATH
360 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
361                         unsigned int dev)
362 {
363         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
364                 return 0;
365         return security_ops->path_mknod(dir, dentry, mode, dev);
366 }
367 EXPORT_SYMBOL(security_path_mknod);
368
369 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
370 {
371         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
372                 return 0;
373         return security_ops->path_mkdir(dir, dentry, mode);
374 }
375 EXPORT_SYMBOL(security_path_mkdir);
376
377 int security_path_rmdir(struct path *dir, struct dentry *dentry)
378 {
379         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
380                 return 0;
381         return security_ops->path_rmdir(dir, dentry);
382 }
383
384 int security_path_unlink(struct path *dir, struct dentry *dentry)
385 {
386         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
387                 return 0;
388         return security_ops->path_unlink(dir, dentry);
389 }
390 EXPORT_SYMBOL(security_path_unlink);
391
392 int security_path_symlink(struct path *dir, struct dentry *dentry,
393                           const char *old_name)
394 {
395         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
396                 return 0;
397         return security_ops->path_symlink(dir, dentry, old_name);
398 }
399
400 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
401                        struct dentry *new_dentry)
402 {
403         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
404                 return 0;
405         return security_ops->path_link(old_dentry, new_dir, new_dentry);
406 }
407
408 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
409                          struct path *new_dir, struct dentry *new_dentry)
410 {
411         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
412                      (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
413                 return 0;
414         return security_ops->path_rename(old_dir, old_dentry, new_dir,
415                                          new_dentry);
416 }
417 EXPORT_SYMBOL(security_path_rename);
418
419 int security_path_truncate(struct path *path)
420 {
421         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
422                 return 0;
423         return security_ops->path_truncate(path);
424 }
425
426 int security_path_chmod(struct path *path, umode_t mode)
427 {
428         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
429                 return 0;
430         return security_ops->path_chmod(path, mode);
431 }
432
433 int security_path_chown(struct path *path, uid_t uid, gid_t gid)
434 {
435         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
436                 return 0;
437         return security_ops->path_chown(path, uid, gid);
438 }
439
440 int security_path_chroot(struct path *path)
441 {
442         return security_ops->path_chroot(path);
443 }
444 #endif
445
446 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
447 {
448         if (unlikely(IS_PRIVATE(dir)))
449                 return 0;
450         return security_ops->inode_create(dir, dentry, mode);
451 }
452 EXPORT_SYMBOL_GPL(security_inode_create);
453
454 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
455                          struct dentry *new_dentry)
456 {
457         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
458                 return 0;
459         return security_ops->inode_link(old_dentry, dir, new_dentry);
460 }
461
462 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
463 {
464         if (unlikely(IS_PRIVATE(dentry->d_inode)))
465                 return 0;
466         return security_ops->inode_unlink(dir, dentry);
467 }
468
469 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
470                             const char *old_name)
471 {
472         if (unlikely(IS_PRIVATE(dir)))
473                 return 0;
474         return security_ops->inode_symlink(dir, dentry, old_name);
475 }
476
477 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
478 {
479         if (unlikely(IS_PRIVATE(dir)))
480                 return 0;
481         return security_ops->inode_mkdir(dir, dentry, mode);
482 }
483 EXPORT_SYMBOL_GPL(security_inode_mkdir);
484
485 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
486 {
487         if (unlikely(IS_PRIVATE(dentry->d_inode)))
488                 return 0;
489         return security_ops->inode_rmdir(dir, dentry);
490 }
491
492 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
493 {
494         if (unlikely(IS_PRIVATE(dir)))
495                 return 0;
496         return security_ops->inode_mknod(dir, dentry, mode, dev);
497 }
498
499 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
500                            struct inode *new_dir, struct dentry *new_dentry)
501 {
502         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
503             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
504                 return 0;
505         return security_ops->inode_rename(old_dir, old_dentry,
506                                            new_dir, new_dentry);
507 }
508
509 int security_inode_readlink(struct dentry *dentry)
510 {
511         if (unlikely(IS_PRIVATE(dentry->d_inode)))
512                 return 0;
513         return security_ops->inode_readlink(dentry);
514 }
515
516 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
517 {
518         if (unlikely(IS_PRIVATE(dentry->d_inode)))
519                 return 0;
520         return security_ops->inode_follow_link(dentry, nd);
521 }
522
523 int security_inode_permission(struct inode *inode, int mask)
524 {
525         if (unlikely(IS_PRIVATE(inode)))
526                 return 0;
527         return security_ops->inode_permission(inode, mask);
528 }
529
530 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
531 {
532         int ret;
533
534         if (unlikely(IS_PRIVATE(dentry->d_inode)))
535                 return 0;
536         ret = security_ops->inode_setattr(dentry, attr);
537         if (ret)
538                 return ret;
539         return evm_inode_setattr(dentry, attr);
540 }
541 EXPORT_SYMBOL_GPL(security_inode_setattr);
542
543 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
544 {
545         if (unlikely(IS_PRIVATE(dentry->d_inode)))
546                 return 0;
547         return security_ops->inode_getattr(mnt, dentry);
548 }
549
550 int security_inode_setxattr(struct dentry *dentry, const char *name,
551                             const void *value, size_t size, int flags)
552 {
553         int ret;
554
555         if (unlikely(IS_PRIVATE(dentry->d_inode)))
556                 return 0;
557         ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
558         if (ret)
559                 return ret;
560         return evm_inode_setxattr(dentry, name, value, size);
561 }
562
563 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
564                                   const void *value, size_t size, int flags)
565 {
566         if (unlikely(IS_PRIVATE(dentry->d_inode)))
567                 return;
568         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
569         evm_inode_post_setxattr(dentry, name, value, size);
570 }
571
572 int security_inode_getxattr(struct dentry *dentry, const char *name)
573 {
574         if (unlikely(IS_PRIVATE(dentry->d_inode)))
575                 return 0;
576         return security_ops->inode_getxattr(dentry, name);
577 }
578
579 int security_inode_listxattr(struct dentry *dentry)
580 {
581         if (unlikely(IS_PRIVATE(dentry->d_inode)))
582                 return 0;
583         return security_ops->inode_listxattr(dentry);
584 }
585
586 int security_inode_removexattr(struct dentry *dentry, const char *name)
587 {
588         int ret;
589
590         if (unlikely(IS_PRIVATE(dentry->d_inode)))
591                 return 0;
592         ret = security_ops->inode_removexattr(dentry, name);
593         if (ret)
594                 return ret;
595         return evm_inode_removexattr(dentry, name);
596 }
597
598 int security_inode_need_killpriv(struct dentry *dentry)
599 {
600         return security_ops->inode_need_killpriv(dentry);
601 }
602
603 int security_inode_killpriv(struct dentry *dentry)
604 {
605         return security_ops->inode_killpriv(dentry);
606 }
607
608 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
609 {
610         if (unlikely(IS_PRIVATE(inode)))
611                 return -EOPNOTSUPP;
612         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
613 }
614
615 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
616 {
617         if (unlikely(IS_PRIVATE(inode)))
618                 return -EOPNOTSUPP;
619         return security_ops->inode_setsecurity(inode, name, value, size, flags);
620 }
621
622 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
623 {
624         if (unlikely(IS_PRIVATE(inode)))
625                 return 0;
626         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
627 }
628
629 void security_inode_getsecid(const struct inode *inode, u32 *secid)
630 {
631         security_ops->inode_getsecid(inode, secid);
632 }
633
634 int security_file_permission(struct file *file, int mask)
635 {
636         int ret;
637
638         ret = security_ops->file_permission(file, mask);
639         if (ret)
640                 return ret;
641
642         return fsnotify_perm(file, mask);
643 }
644
645 int security_file_alloc(struct file *file)
646 {
647         return security_ops->file_alloc_security(file);
648 }
649
650 void security_file_free(struct file *file)
651 {
652         security_ops->file_free_security(file);
653 }
654
655 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
656 {
657         return security_ops->file_ioctl(file, cmd, arg);
658 }
659
660 int security_file_mmap(struct file *file, unsigned long reqprot,
661                         unsigned long prot, unsigned long flags,
662                         unsigned long addr, unsigned long addr_only)
663 {
664         int ret;
665
666         ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
667         if (ret)
668                 return ret;
669         return ima_file_mmap(file, prot);
670 }
671
672 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
673                             unsigned long prot)
674 {
675         return security_ops->file_mprotect(vma, reqprot, prot);
676 }
677
678 int security_file_lock(struct file *file, unsigned int cmd)
679 {
680         return security_ops->file_lock(file, cmd);
681 }
682
683 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
684 {
685         return security_ops->file_fcntl(file, cmd, arg);
686 }
687
688 int security_file_set_fowner(struct file *file)
689 {
690         return security_ops->file_set_fowner(file);
691 }
692
693 int security_file_send_sigiotask(struct task_struct *tsk,
694                                   struct fown_struct *fown, int sig)
695 {
696         return security_ops->file_send_sigiotask(tsk, fown, sig);
697 }
698
699 int security_file_receive(struct file *file)
700 {
701         return security_ops->file_receive(file);
702 }
703
704 int security_dentry_open(struct file *file, const struct cred *cred)
705 {
706         int ret;
707
708         ret = security_ops->dentry_open(file, cred);
709         if (ret)
710                 return ret;
711
712         return fsnotify_perm(file, MAY_OPEN);
713 }
714
715 int security_task_create(unsigned long clone_flags)
716 {
717         return security_ops->task_create(clone_flags);
718 }
719
720 void security_task_free(struct task_struct *task)
721 {
722         security_ops->task_free(task);
723 }
724
725 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
726 {
727         return security_ops->cred_alloc_blank(cred, gfp);
728 }
729
730 void security_cred_free(struct cred *cred)
731 {
732         security_ops->cred_free(cred);
733 }
734
735 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
736 {
737         return security_ops->cred_prepare(new, old, gfp);
738 }
739
740 void security_transfer_creds(struct cred *new, const struct cred *old)
741 {
742         security_ops->cred_transfer(new, old);
743 }
744
745 int security_kernel_act_as(struct cred *new, u32 secid)
746 {
747         return security_ops->kernel_act_as(new, secid);
748 }
749
750 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
751 {
752         return security_ops->kernel_create_files_as(new, inode);
753 }
754
755 int security_kernel_module_request(char *kmod_name)
756 {
757         return security_ops->kernel_module_request(kmod_name);
758 }
759
760 int security_task_fix_setuid(struct cred *new, const struct cred *old,
761                              int flags)
762 {
763         return security_ops->task_fix_setuid(new, old, flags);
764 }
765
766 int security_task_setpgid(struct task_struct *p, pid_t pgid)
767 {
768         return security_ops->task_setpgid(p, pgid);
769 }
770
771 int security_task_getpgid(struct task_struct *p)
772 {
773         return security_ops->task_getpgid(p);
774 }
775
776 int security_task_getsid(struct task_struct *p)
777 {
778         return security_ops->task_getsid(p);
779 }
780
781 void security_task_getsecid(struct task_struct *p, u32 *secid)
782 {
783         security_ops->task_getsecid(p, secid);
784 }
785 EXPORT_SYMBOL(security_task_getsecid);
786
787 int security_task_setnice(struct task_struct *p, int nice)
788 {
789         return security_ops->task_setnice(p, nice);
790 }
791
792 int security_task_setioprio(struct task_struct *p, int ioprio)
793 {
794         return security_ops->task_setioprio(p, ioprio);
795 }
796
797 int security_task_getioprio(struct task_struct *p)
798 {
799         return security_ops->task_getioprio(p);
800 }
801
802 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
803                 struct rlimit *new_rlim)
804 {
805         return security_ops->task_setrlimit(p, resource, new_rlim);
806 }
807
808 int security_task_setscheduler(struct task_struct *p)
809 {
810         return security_ops->task_setscheduler(p);
811 }
812
813 int security_task_getscheduler(struct task_struct *p)
814 {
815         return security_ops->task_getscheduler(p);
816 }
817
818 int security_task_movememory(struct task_struct *p)
819 {
820         return security_ops->task_movememory(p);
821 }
822
823 int security_task_kill(struct task_struct *p, struct siginfo *info,
824                         int sig, u32 secid)
825 {
826         return security_ops->task_kill(p, info, sig, secid);
827 }
828
829 int security_task_wait(struct task_struct *p)
830 {
831         return security_ops->task_wait(p);
832 }
833
834 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
835                          unsigned long arg4, unsigned long arg5)
836 {
837         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
838 }
839
840 void security_task_to_inode(struct task_struct *p, struct inode *inode)
841 {
842         security_ops->task_to_inode(p, inode);
843 }
844
845 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
846 {
847         return security_ops->ipc_permission(ipcp, flag);
848 }
849
850 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
851 {
852         security_ops->ipc_getsecid(ipcp, secid);
853 }
854
855 int security_msg_msg_alloc(struct msg_msg *msg)
856 {
857         return security_ops->msg_msg_alloc_security(msg);
858 }
859
860 void security_msg_msg_free(struct msg_msg *msg)
861 {
862         security_ops->msg_msg_free_security(msg);
863 }
864
865 int security_msg_queue_alloc(struct msg_queue *msq)
866 {
867         return security_ops->msg_queue_alloc_security(msq);
868 }
869
870 void security_msg_queue_free(struct msg_queue *msq)
871 {
872         security_ops->msg_queue_free_security(msq);
873 }
874
875 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
876 {
877         return security_ops->msg_queue_associate(msq, msqflg);
878 }
879
880 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
881 {
882         return security_ops->msg_queue_msgctl(msq, cmd);
883 }
884
885 int security_msg_queue_msgsnd(struct msg_queue *msq,
886                                struct msg_msg *msg, int msqflg)
887 {
888         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
889 }
890
891 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
892                                struct task_struct *target, long type, int mode)
893 {
894         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
895 }
896
897 int security_shm_alloc(struct shmid_kernel *shp)
898 {
899         return security_ops->shm_alloc_security(shp);
900 }
901
902 void security_shm_free(struct shmid_kernel *shp)
903 {
904         security_ops->shm_free_security(shp);
905 }
906
907 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
908 {
909         return security_ops->shm_associate(shp, shmflg);
910 }
911
912 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
913 {
914         return security_ops->shm_shmctl(shp, cmd);
915 }
916
917 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
918 {
919         return security_ops->shm_shmat(shp, shmaddr, shmflg);
920 }
921
922 int security_sem_alloc(struct sem_array *sma)
923 {
924         return security_ops->sem_alloc_security(sma);
925 }
926
927 void security_sem_free(struct sem_array *sma)
928 {
929         security_ops->sem_free_security(sma);
930 }
931
932 int security_sem_associate(struct sem_array *sma, int semflg)
933 {
934         return security_ops->sem_associate(sma, semflg);
935 }
936
937 int security_sem_semctl(struct sem_array *sma, int cmd)
938 {
939         return security_ops->sem_semctl(sma, cmd);
940 }
941
942 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
943                         unsigned nsops, int alter)
944 {
945         return security_ops->sem_semop(sma, sops, nsops, alter);
946 }
947
948 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
949 {
950         if (unlikely(inode && IS_PRIVATE(inode)))
951                 return;
952         security_ops->d_instantiate(dentry, inode);
953 }
954 EXPORT_SYMBOL(security_d_instantiate);
955
956 int security_getprocattr(struct task_struct *p, char *name, char **value)
957 {
958         return security_ops->getprocattr(p, name, value);
959 }
960
961 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
962 {
963         return security_ops->setprocattr(p, name, value, size);
964 }
965
966 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
967 {
968         return security_ops->netlink_send(sk, skb);
969 }
970
971 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
972 {
973         return security_ops->secid_to_secctx(secid, secdata, seclen);
974 }
975 EXPORT_SYMBOL(security_secid_to_secctx);
976
977 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
978 {
979         return security_ops->secctx_to_secid(secdata, seclen, secid);
980 }
981 EXPORT_SYMBOL(security_secctx_to_secid);
982
983 void security_release_secctx(char *secdata, u32 seclen)
984 {
985         security_ops->release_secctx(secdata, seclen);
986 }
987 EXPORT_SYMBOL(security_release_secctx);
988
989 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
990 {
991         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
992 }
993 EXPORT_SYMBOL(security_inode_notifysecctx);
994
995 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
996 {
997         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
998 }
999 EXPORT_SYMBOL(security_inode_setsecctx);
1000
1001 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1002 {
1003         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1004 }
1005 EXPORT_SYMBOL(security_inode_getsecctx);
1006
1007 #ifdef CONFIG_SECURITY_NETWORK
1008
1009 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1010 {
1011         return security_ops->unix_stream_connect(sock, other, newsk);
1012 }
1013 EXPORT_SYMBOL(security_unix_stream_connect);
1014
1015 int security_unix_may_send(struct socket *sock,  struct socket *other)
1016 {
1017         return security_ops->unix_may_send(sock, other);
1018 }
1019 EXPORT_SYMBOL(security_unix_may_send);
1020
1021 int security_socket_create(int family, int type, int protocol, int kern)
1022 {
1023         return security_ops->socket_create(family, type, protocol, kern);
1024 }
1025
1026 int security_socket_post_create(struct socket *sock, int family,
1027                                 int type, int protocol, int kern)
1028 {
1029         return security_ops->socket_post_create(sock, family, type,
1030                                                 protocol, kern);
1031 }
1032
1033 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1034 {
1035         return security_ops->socket_bind(sock, address, addrlen);
1036 }
1037
1038 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1039 {
1040         return security_ops->socket_connect(sock, address, addrlen);
1041 }
1042
1043 int security_socket_listen(struct socket *sock, int backlog)
1044 {
1045         return security_ops->socket_listen(sock, backlog);
1046 }
1047
1048 int security_socket_accept(struct socket *sock, struct socket *newsock)
1049 {
1050         return security_ops->socket_accept(sock, newsock);
1051 }
1052
1053 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1054 {
1055         return security_ops->socket_sendmsg(sock, msg, size);
1056 }
1057
1058 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1059                             int size, int flags)
1060 {
1061         return security_ops->socket_recvmsg(sock, msg, size, flags);
1062 }
1063
1064 int security_socket_getsockname(struct socket *sock)
1065 {
1066         return security_ops->socket_getsockname(sock);
1067 }
1068
1069 int security_socket_getpeername(struct socket *sock)
1070 {
1071         return security_ops->socket_getpeername(sock);
1072 }
1073
1074 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1075 {
1076         return security_ops->socket_getsockopt(sock, level, optname);
1077 }
1078
1079 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1080 {
1081         return security_ops->socket_setsockopt(sock, level, optname);
1082 }
1083
1084 int security_socket_shutdown(struct socket *sock, int how)
1085 {
1086         return security_ops->socket_shutdown(sock, how);
1087 }
1088
1089 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1090 {
1091         return security_ops->socket_sock_rcv_skb(sk, skb);
1092 }
1093 EXPORT_SYMBOL(security_sock_rcv_skb);
1094
1095 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1096                                       int __user *optlen, unsigned len)
1097 {
1098         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1099 }
1100
1101 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1102 {
1103         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1104 }
1105 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1106
1107 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1108 {
1109         return security_ops->sk_alloc_security(sk, family, priority);
1110 }
1111
1112 void security_sk_free(struct sock *sk)
1113 {
1114         security_ops->sk_free_security(sk);
1115 }
1116
1117 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1118 {
1119         security_ops->sk_clone_security(sk, newsk);
1120 }
1121 EXPORT_SYMBOL(security_sk_clone);
1122
1123 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1124 {
1125         security_ops->sk_getsecid(sk, &fl->flowi_secid);
1126 }
1127 EXPORT_SYMBOL(security_sk_classify_flow);
1128
1129 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1130 {
1131         security_ops->req_classify_flow(req, fl);
1132 }
1133 EXPORT_SYMBOL(security_req_classify_flow);
1134
1135 void security_sock_graft(struct sock *sk, struct socket *parent)
1136 {
1137         security_ops->sock_graft(sk, parent);
1138 }
1139 EXPORT_SYMBOL(security_sock_graft);
1140
1141 int security_inet_conn_request(struct sock *sk,
1142                         struct sk_buff *skb, struct request_sock *req)
1143 {
1144         return security_ops->inet_conn_request(sk, skb, req);
1145 }
1146 EXPORT_SYMBOL(security_inet_conn_request);
1147
1148 void security_inet_csk_clone(struct sock *newsk,
1149                         const struct request_sock *req)
1150 {
1151         security_ops->inet_csk_clone(newsk, req);
1152 }
1153
1154 void security_inet_conn_established(struct sock *sk,
1155                         struct sk_buff *skb)
1156 {
1157         security_ops->inet_conn_established(sk, skb);
1158 }
1159
1160 int security_secmark_relabel_packet(u32 secid)
1161 {
1162         return security_ops->secmark_relabel_packet(secid);
1163 }
1164 EXPORT_SYMBOL(security_secmark_relabel_packet);
1165
1166 void security_secmark_refcount_inc(void)
1167 {
1168         security_ops->secmark_refcount_inc();
1169 }
1170 EXPORT_SYMBOL(security_secmark_refcount_inc);
1171
1172 void security_secmark_refcount_dec(void)
1173 {
1174         security_ops->secmark_refcount_dec();
1175 }
1176 EXPORT_SYMBOL(security_secmark_refcount_dec);
1177
1178 int security_tun_dev_create(void)
1179 {
1180         return security_ops->tun_dev_create();
1181 }
1182 EXPORT_SYMBOL(security_tun_dev_create);
1183
1184 void security_tun_dev_post_create(struct sock *sk)
1185 {
1186         return security_ops->tun_dev_post_create(sk);
1187 }
1188 EXPORT_SYMBOL(security_tun_dev_post_create);
1189
1190 int security_tun_dev_attach(struct sock *sk)
1191 {
1192         return security_ops->tun_dev_attach(sk);
1193 }
1194 EXPORT_SYMBOL(security_tun_dev_attach);
1195
1196 #endif  /* CONFIG_SECURITY_NETWORK */
1197
1198 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1199
1200 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1201 {
1202         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1203 }
1204 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1205
1206 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1207                               struct xfrm_sec_ctx **new_ctxp)
1208 {
1209         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1210 }
1211
1212 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1213 {
1214         security_ops->xfrm_policy_free_security(ctx);
1215 }
1216 EXPORT_SYMBOL(security_xfrm_policy_free);
1217
1218 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1219 {
1220         return security_ops->xfrm_policy_delete_security(ctx);
1221 }
1222
1223 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1224 {
1225         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1226 }
1227 EXPORT_SYMBOL(security_xfrm_state_alloc);
1228
1229 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1230                                       struct xfrm_sec_ctx *polsec, u32 secid)
1231 {
1232         if (!polsec)
1233                 return 0;
1234         /*
1235          * We want the context to be taken from secid which is usually
1236          * from the sock.
1237          */
1238         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1239 }
1240
1241 int security_xfrm_state_delete(struct xfrm_state *x)
1242 {
1243         return security_ops->xfrm_state_delete_security(x);
1244 }
1245 EXPORT_SYMBOL(security_xfrm_state_delete);
1246
1247 void security_xfrm_state_free(struct xfrm_state *x)
1248 {
1249         security_ops->xfrm_state_free_security(x);
1250 }
1251
1252 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1253 {
1254         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1255 }
1256
1257 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1258                                        struct xfrm_policy *xp,
1259                                        const struct flowi *fl)
1260 {
1261         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1262 }
1263
1264 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1265 {
1266         return security_ops->xfrm_decode_session(skb, secid, 1);
1267 }
1268
1269 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1270 {
1271         int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1272
1273         BUG_ON(rc);
1274 }
1275 EXPORT_SYMBOL(security_skb_classify_flow);
1276
1277 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1278
1279 #ifdef CONFIG_KEYS
1280
1281 int security_key_alloc(struct key *key, const struct cred *cred,
1282                        unsigned long flags)
1283 {
1284         return security_ops->key_alloc(key, cred, flags);
1285 }
1286
1287 void security_key_free(struct key *key)
1288 {
1289         security_ops->key_free(key);
1290 }
1291
1292 int security_key_permission(key_ref_t key_ref,
1293                             const struct cred *cred, key_perm_t perm)
1294 {
1295         return security_ops->key_permission(key_ref, cred, perm);
1296 }
1297
1298 int security_key_getsecurity(struct key *key, char **_buffer)
1299 {
1300         return security_ops->key_getsecurity(key, _buffer);
1301 }
1302
1303 #endif  /* CONFIG_KEYS */
1304
1305 #ifdef CONFIG_AUDIT
1306
1307 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1308 {
1309         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1310 }
1311
1312 int security_audit_rule_known(struct audit_krule *krule)
1313 {
1314         return security_ops->audit_rule_known(krule);
1315 }
1316
1317 void security_audit_rule_free(void *lsmrule)
1318 {
1319         security_ops->audit_rule_free(lsmrule);
1320 }
1321
1322 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1323                               struct audit_context *actx)
1324 {
1325         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1326 }
1327
1328 #endif /* CONFIG_AUDIT */