compiler/gcc4: Make quirk for asm_volatile_goto() unconditional
[sfrench/cifs-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/dcache.h>
16 #include <linux/module.h>
17 #include <linux/init.h>
18 #include <linux/kernel.h>
19 #include <linux/security.h>
20 #include <linux/integrity.h>
21 #include <linux/ima.h>
22 #include <linux/evm.h>
23 #include <linux/fsnotify.h>
24 #include <linux/mman.h>
25 #include <linux/mount.h>
26 #include <linux/personality.h>
27 #include <linux/backing-dev.h>
28 #include <net/flow.h>
29
30 #define MAX_LSM_EVM_XATTR       2
31
32 /* Boot-time LSM user choice */
33 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
34         CONFIG_DEFAULT_SECURITY;
35
36 static struct security_operations *security_ops;
37 static struct security_operations default_security_ops = {
38         .name   = "default",
39 };
40
41 static inline int __init verify(struct security_operations *ops)
42 {
43         /* verify the security_operations structure exists */
44         if (!ops)
45                 return -EINVAL;
46         security_fixup_ops(ops);
47         return 0;
48 }
49
50 static void __init do_security_initcalls(void)
51 {
52         initcall_t *call;
53         call = __security_initcall_start;
54         while (call < __security_initcall_end) {
55                 (*call) ();
56                 call++;
57         }
58 }
59
60 /**
61  * security_init - initializes the security framework
62  *
63  * This should be called early in the kernel initialization sequence.
64  */
65 int __init security_init(void)
66 {
67         printk(KERN_INFO "Security Framework initialized\n");
68
69         security_fixup_ops(&default_security_ops);
70         security_ops = &default_security_ops;
71         do_security_initcalls();
72
73         return 0;
74 }
75
76 void reset_security_ops(void)
77 {
78         security_ops = &default_security_ops;
79 }
80
81 /* Save user chosen LSM */
82 static int __init choose_lsm(char *str)
83 {
84         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
85         return 1;
86 }
87 __setup("security=", choose_lsm);
88
89 /**
90  * security_module_enable - Load given security module on boot ?
91  * @ops: a pointer to the struct security_operations that is to be checked.
92  *
93  * Each LSM must pass this method before registering its own operations
94  * to avoid security registration races. This method may also be used
95  * to check if your LSM is currently loaded during kernel initialization.
96  *
97  * Return true if:
98  *      -The passed LSM is the one chosen by user at boot time,
99  *      -or the passed LSM is configured as the default and the user did not
100  *       choose an alternate LSM at boot time.
101  * Otherwise, return false.
102  */
103 int __init security_module_enable(struct security_operations *ops)
104 {
105         return !strcmp(ops->name, chosen_lsm);
106 }
107
108 /**
109  * register_security - registers a security framework with the kernel
110  * @ops: a pointer to the struct security_options that is to be registered
111  *
112  * This function allows a security module to register itself with the
113  * kernel security subsystem.  Some rudimentary checking is done on the @ops
114  * value passed to this function. You'll need to check first if your LSM
115  * is allowed to register its @ops by calling security_module_enable(@ops).
116  *
117  * If there is already a security module registered with the kernel,
118  * an error will be returned.  Otherwise %0 is returned on success.
119  */
120 int __init register_security(struct security_operations *ops)
121 {
122         if (verify(ops)) {
123                 printk(KERN_DEBUG "%s could not verify "
124                        "security_operations structure.\n", __func__);
125                 return -EINVAL;
126         }
127
128         if (security_ops != &default_security_ops)
129                 return -EAGAIN;
130
131         security_ops = ops;
132
133         return 0;
134 }
135
136 /* Security operations */
137
138 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
139 {
140 #ifdef CONFIG_SECURITY_YAMA_STACKED
141         int rc;
142         rc = yama_ptrace_access_check(child, mode);
143         if (rc)
144                 return rc;
145 #endif
146         return security_ops->ptrace_access_check(child, mode);
147 }
148
149 int security_ptrace_traceme(struct task_struct *parent)
150 {
151 #ifdef CONFIG_SECURITY_YAMA_STACKED
152         int rc;
153         rc = yama_ptrace_traceme(parent);
154         if (rc)
155                 return rc;
156 #endif
157         return security_ops->ptrace_traceme(parent);
158 }
159
160 int security_capget(struct task_struct *target,
161                      kernel_cap_t *effective,
162                      kernel_cap_t *inheritable,
163                      kernel_cap_t *permitted)
164 {
165         return security_ops->capget(target, effective, inheritable, permitted);
166 }
167
168 int security_capset(struct cred *new, const struct cred *old,
169                     const kernel_cap_t *effective,
170                     const kernel_cap_t *inheritable,
171                     const kernel_cap_t *permitted)
172 {
173         return security_ops->capset(new, old,
174                                     effective, inheritable, permitted);
175 }
176
177 int security_capable(const struct cred *cred, struct user_namespace *ns,
178                      int cap)
179 {
180         return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT);
181 }
182
183 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
184                              int cap)
185 {
186         return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
187 }
188
189 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
190 {
191         return security_ops->quotactl(cmds, type, id, sb);
192 }
193
194 int security_quota_on(struct dentry *dentry)
195 {
196         return security_ops->quota_on(dentry);
197 }
198
199 int security_syslog(int type)
200 {
201         return security_ops->syslog(type);
202 }
203
204 int security_settime(const struct timespec *ts, const struct timezone *tz)
205 {
206         return security_ops->settime(ts, tz);
207 }
208
209 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
210 {
211         return security_ops->vm_enough_memory(mm, pages);
212 }
213
214 int security_bprm_set_creds(struct linux_binprm *bprm)
215 {
216         return security_ops->bprm_set_creds(bprm);
217 }
218
219 int security_bprm_check(struct linux_binprm *bprm)
220 {
221         int ret;
222
223         ret = security_ops->bprm_check_security(bprm);
224         if (ret)
225                 return ret;
226         return ima_bprm_check(bprm);
227 }
228
229 void security_bprm_committing_creds(struct linux_binprm *bprm)
230 {
231         security_ops->bprm_committing_creds(bprm);
232 }
233
234 void security_bprm_committed_creds(struct linux_binprm *bprm)
235 {
236         security_ops->bprm_committed_creds(bprm);
237 }
238
239 int security_bprm_secureexec(struct linux_binprm *bprm)
240 {
241         return security_ops->bprm_secureexec(bprm);
242 }
243
244 int security_sb_alloc(struct super_block *sb)
245 {
246         return security_ops->sb_alloc_security(sb);
247 }
248
249 void security_sb_free(struct super_block *sb)
250 {
251         security_ops->sb_free_security(sb);
252 }
253
254 int security_sb_copy_data(char *orig, char *copy)
255 {
256         return security_ops->sb_copy_data(orig, copy);
257 }
258 EXPORT_SYMBOL(security_sb_copy_data);
259
260 int security_sb_remount(struct super_block *sb, void *data)
261 {
262         return security_ops->sb_remount(sb, data);
263 }
264
265 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
266 {
267         return security_ops->sb_kern_mount(sb, flags, data);
268 }
269
270 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
271 {
272         return security_ops->sb_show_options(m, sb);
273 }
274
275 int security_sb_statfs(struct dentry *dentry)
276 {
277         return security_ops->sb_statfs(dentry);
278 }
279
280 int security_sb_mount(const char *dev_name, struct path *path,
281                        const char *type, unsigned long flags, void *data)
282 {
283         return security_ops->sb_mount(dev_name, path, type, flags, data);
284 }
285
286 int security_sb_umount(struct vfsmount *mnt, int flags)
287 {
288         return security_ops->sb_umount(mnt, flags);
289 }
290
291 int security_sb_pivotroot(struct path *old_path, struct path *new_path)
292 {
293         return security_ops->sb_pivotroot(old_path, new_path);
294 }
295
296 int security_sb_set_mnt_opts(struct super_block *sb,
297                                 struct security_mnt_opts *opts,
298                                 unsigned long kern_flags,
299                                 unsigned long *set_kern_flags)
300 {
301         return security_ops->sb_set_mnt_opts(sb, opts, kern_flags,
302                                                 set_kern_flags);
303 }
304 EXPORT_SYMBOL(security_sb_set_mnt_opts);
305
306 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
307                                 struct super_block *newsb)
308 {
309         return security_ops->sb_clone_mnt_opts(oldsb, newsb);
310 }
311 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
312
313 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
314 {
315         return security_ops->sb_parse_opts_str(options, opts);
316 }
317 EXPORT_SYMBOL(security_sb_parse_opts_str);
318
319 int security_inode_alloc(struct inode *inode)
320 {
321         inode->i_security = NULL;
322         return security_ops->inode_alloc_security(inode);
323 }
324
325 void security_inode_free(struct inode *inode)
326 {
327         integrity_inode_free(inode);
328         security_ops->inode_free_security(inode);
329 }
330
331 int security_dentry_init_security(struct dentry *dentry, int mode,
332                                         struct qstr *name, void **ctx,
333                                         u32 *ctxlen)
334 {
335         return security_ops->dentry_init_security(dentry, mode, name,
336                                                         ctx, ctxlen);
337 }
338 EXPORT_SYMBOL(security_dentry_init_security);
339
340 int security_inode_init_security(struct inode *inode, struct inode *dir,
341                                  const struct qstr *qstr,
342                                  const initxattrs initxattrs, void *fs_data)
343 {
344         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
345         struct xattr *lsm_xattr, *evm_xattr, *xattr;
346         int ret;
347
348         if (unlikely(IS_PRIVATE(inode)))
349                 return 0;
350
351         if (!initxattrs)
352                 return security_ops->inode_init_security(inode, dir, qstr,
353                                                          NULL, NULL, NULL);
354         memset(new_xattrs, 0, sizeof(new_xattrs));
355         lsm_xattr = new_xattrs;
356         ret = security_ops->inode_init_security(inode, dir, qstr,
357                                                 &lsm_xattr->name,
358                                                 &lsm_xattr->value,
359                                                 &lsm_xattr->value_len);
360         if (ret)
361                 goto out;
362
363         evm_xattr = lsm_xattr + 1;
364         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
365         if (ret)
366                 goto out;
367         ret = initxattrs(inode, new_xattrs, fs_data);
368 out:
369         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
370                 kfree(xattr->value);
371         return (ret == -EOPNOTSUPP) ? 0 : ret;
372 }
373 EXPORT_SYMBOL(security_inode_init_security);
374
375 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
376                                      const struct qstr *qstr, const char **name,
377                                      void **value, size_t *len)
378 {
379         if (unlikely(IS_PRIVATE(inode)))
380                 return -EOPNOTSUPP;
381         return security_ops->inode_init_security(inode, dir, qstr, name, value,
382                                                  len);
383 }
384 EXPORT_SYMBOL(security_old_inode_init_security);
385
386 #ifdef CONFIG_SECURITY_PATH
387 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
388                         unsigned int dev)
389 {
390         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
391                 return 0;
392         return security_ops->path_mknod(dir, dentry, mode, dev);
393 }
394 EXPORT_SYMBOL(security_path_mknod);
395
396 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
397 {
398         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
399                 return 0;
400         return security_ops->path_mkdir(dir, dentry, mode);
401 }
402 EXPORT_SYMBOL(security_path_mkdir);
403
404 int security_path_rmdir(struct path *dir, struct dentry *dentry)
405 {
406         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
407                 return 0;
408         return security_ops->path_rmdir(dir, dentry);
409 }
410
411 int security_path_unlink(struct path *dir, struct dentry *dentry)
412 {
413         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
414                 return 0;
415         return security_ops->path_unlink(dir, dentry);
416 }
417 EXPORT_SYMBOL(security_path_unlink);
418
419 int security_path_symlink(struct path *dir, struct dentry *dentry,
420                           const char *old_name)
421 {
422         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
423                 return 0;
424         return security_ops->path_symlink(dir, dentry, old_name);
425 }
426
427 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
428                        struct dentry *new_dentry)
429 {
430         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
431                 return 0;
432         return security_ops->path_link(old_dentry, new_dir, new_dentry);
433 }
434
435 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
436                          struct path *new_dir, struct dentry *new_dentry)
437 {
438         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
439                      (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
440                 return 0;
441         return security_ops->path_rename(old_dir, old_dentry, new_dir,
442                                          new_dentry);
443 }
444 EXPORT_SYMBOL(security_path_rename);
445
446 int security_path_truncate(struct path *path)
447 {
448         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
449                 return 0;
450         return security_ops->path_truncate(path);
451 }
452
453 int security_path_chmod(struct path *path, umode_t mode)
454 {
455         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
456                 return 0;
457         return security_ops->path_chmod(path, mode);
458 }
459
460 int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
461 {
462         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
463                 return 0;
464         return security_ops->path_chown(path, uid, gid);
465 }
466
467 int security_path_chroot(struct path *path)
468 {
469         return security_ops->path_chroot(path);
470 }
471 #endif
472
473 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
474 {
475         if (unlikely(IS_PRIVATE(dir)))
476                 return 0;
477         return security_ops->inode_create(dir, dentry, mode);
478 }
479 EXPORT_SYMBOL_GPL(security_inode_create);
480
481 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
482                          struct dentry *new_dentry)
483 {
484         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
485                 return 0;
486         return security_ops->inode_link(old_dentry, dir, new_dentry);
487 }
488
489 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
490 {
491         if (unlikely(IS_PRIVATE(dentry->d_inode)))
492                 return 0;
493         return security_ops->inode_unlink(dir, dentry);
494 }
495
496 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
497                             const char *old_name)
498 {
499         if (unlikely(IS_PRIVATE(dir)))
500                 return 0;
501         return security_ops->inode_symlink(dir, dentry, old_name);
502 }
503
504 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
505 {
506         if (unlikely(IS_PRIVATE(dir)))
507                 return 0;
508         return security_ops->inode_mkdir(dir, dentry, mode);
509 }
510 EXPORT_SYMBOL_GPL(security_inode_mkdir);
511
512 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
513 {
514         if (unlikely(IS_PRIVATE(dentry->d_inode)))
515                 return 0;
516         return security_ops->inode_rmdir(dir, dentry);
517 }
518
519 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
520 {
521         if (unlikely(IS_PRIVATE(dir)))
522                 return 0;
523         return security_ops->inode_mknod(dir, dentry, mode, dev);
524 }
525
526 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
527                            struct inode *new_dir, struct dentry *new_dentry)
528 {
529         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
530             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
531                 return 0;
532         return security_ops->inode_rename(old_dir, old_dentry,
533                                            new_dir, new_dentry);
534 }
535
536 int security_inode_readlink(struct dentry *dentry)
537 {
538         if (unlikely(IS_PRIVATE(dentry->d_inode)))
539                 return 0;
540         return security_ops->inode_readlink(dentry);
541 }
542
543 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
544 {
545         if (unlikely(IS_PRIVATE(dentry->d_inode)))
546                 return 0;
547         return security_ops->inode_follow_link(dentry, nd);
548 }
549
550 int security_inode_permission(struct inode *inode, int mask)
551 {
552         if (unlikely(IS_PRIVATE(inode)))
553                 return 0;
554         return security_ops->inode_permission(inode, mask);
555 }
556
557 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
558 {
559         int ret;
560
561         if (unlikely(IS_PRIVATE(dentry->d_inode)))
562                 return 0;
563         ret = security_ops->inode_setattr(dentry, attr);
564         if (ret)
565                 return ret;
566         return evm_inode_setattr(dentry, attr);
567 }
568 EXPORT_SYMBOL_GPL(security_inode_setattr);
569
570 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
571 {
572         if (unlikely(IS_PRIVATE(dentry->d_inode)))
573                 return 0;
574         return security_ops->inode_getattr(mnt, dentry);
575 }
576
577 int security_inode_setxattr(struct dentry *dentry, const char *name,
578                             const void *value, size_t size, int flags)
579 {
580         int ret;
581
582         if (unlikely(IS_PRIVATE(dentry->d_inode)))
583                 return 0;
584         ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
585         if (ret)
586                 return ret;
587         ret = ima_inode_setxattr(dentry, name, value, size);
588         if (ret)
589                 return ret;
590         return evm_inode_setxattr(dentry, name, value, size);
591 }
592
593 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
594                                   const void *value, size_t size, int flags)
595 {
596         if (unlikely(IS_PRIVATE(dentry->d_inode)))
597                 return;
598         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
599         evm_inode_post_setxattr(dentry, name, value, size);
600 }
601
602 int security_inode_getxattr(struct dentry *dentry, const char *name)
603 {
604         if (unlikely(IS_PRIVATE(dentry->d_inode)))
605                 return 0;
606         return security_ops->inode_getxattr(dentry, name);
607 }
608
609 int security_inode_listxattr(struct dentry *dentry)
610 {
611         if (unlikely(IS_PRIVATE(dentry->d_inode)))
612                 return 0;
613         return security_ops->inode_listxattr(dentry);
614 }
615
616 int security_inode_removexattr(struct dentry *dentry, const char *name)
617 {
618         int ret;
619
620         if (unlikely(IS_PRIVATE(dentry->d_inode)))
621                 return 0;
622         ret = security_ops->inode_removexattr(dentry, name);
623         if (ret)
624                 return ret;
625         ret = ima_inode_removexattr(dentry, name);
626         if (ret)
627                 return ret;
628         return evm_inode_removexattr(dentry, name);
629 }
630
631 int security_inode_need_killpriv(struct dentry *dentry)
632 {
633         return security_ops->inode_need_killpriv(dentry);
634 }
635
636 int security_inode_killpriv(struct dentry *dentry)
637 {
638         return security_ops->inode_killpriv(dentry);
639 }
640
641 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
642 {
643         if (unlikely(IS_PRIVATE(inode)))
644                 return -EOPNOTSUPP;
645         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
646 }
647
648 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
649 {
650         if (unlikely(IS_PRIVATE(inode)))
651                 return -EOPNOTSUPP;
652         return security_ops->inode_setsecurity(inode, name, value, size, flags);
653 }
654
655 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
656 {
657         if (unlikely(IS_PRIVATE(inode)))
658                 return 0;
659         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
660 }
661 EXPORT_SYMBOL(security_inode_listsecurity);
662
663 void security_inode_getsecid(const struct inode *inode, u32 *secid)
664 {
665         security_ops->inode_getsecid(inode, secid);
666 }
667
668 int security_file_permission(struct file *file, int mask)
669 {
670         int ret;
671
672         ret = security_ops->file_permission(file, mask);
673         if (ret)
674                 return ret;
675
676         return fsnotify_perm(file, mask);
677 }
678
679 int security_file_alloc(struct file *file)
680 {
681         return security_ops->file_alloc_security(file);
682 }
683
684 void security_file_free(struct file *file)
685 {
686         security_ops->file_free_security(file);
687 }
688
689 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
690 {
691         return security_ops->file_ioctl(file, cmd, arg);
692 }
693
694 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
695 {
696         /*
697          * Does we have PROT_READ and does the application expect
698          * it to imply PROT_EXEC?  If not, nothing to talk about...
699          */
700         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
701                 return prot;
702         if (!(current->personality & READ_IMPLIES_EXEC))
703                 return prot;
704         /*
705          * if that's an anonymous mapping, let it.
706          */
707         if (!file)
708                 return prot | PROT_EXEC;
709         /*
710          * ditto if it's not on noexec mount, except that on !MMU we need
711          * BDI_CAP_EXEC_MMAP (== VM_MAYEXEC) in this case
712          */
713         if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) {
714 #ifndef CONFIG_MMU
715                 unsigned long caps = 0;
716                 struct address_space *mapping = file->f_mapping;
717                 if (mapping && mapping->backing_dev_info)
718                         caps = mapping->backing_dev_info->capabilities;
719                 if (!(caps & BDI_CAP_EXEC_MAP))
720                         return prot;
721 #endif
722                 return prot | PROT_EXEC;
723         }
724         /* anything on noexec mount won't get PROT_EXEC */
725         return prot;
726 }
727
728 int security_mmap_file(struct file *file, unsigned long prot,
729                         unsigned long flags)
730 {
731         int ret;
732         ret = security_ops->mmap_file(file, prot,
733                                         mmap_prot(file, prot), flags);
734         if (ret)
735                 return ret;
736         return ima_file_mmap(file, prot);
737 }
738
739 int security_mmap_addr(unsigned long addr)
740 {
741         return security_ops->mmap_addr(addr);
742 }
743
744 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
745                             unsigned long prot)
746 {
747         return security_ops->file_mprotect(vma, reqprot, prot);
748 }
749
750 int security_file_lock(struct file *file, unsigned int cmd)
751 {
752         return security_ops->file_lock(file, cmd);
753 }
754
755 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
756 {
757         return security_ops->file_fcntl(file, cmd, arg);
758 }
759
760 int security_file_set_fowner(struct file *file)
761 {
762         return security_ops->file_set_fowner(file);
763 }
764
765 int security_file_send_sigiotask(struct task_struct *tsk,
766                                   struct fown_struct *fown, int sig)
767 {
768         return security_ops->file_send_sigiotask(tsk, fown, sig);
769 }
770
771 int security_file_receive(struct file *file)
772 {
773         return security_ops->file_receive(file);
774 }
775
776 int security_file_open(struct file *file, const struct cred *cred)
777 {
778         int ret;
779
780         ret = security_ops->file_open(file, cred);
781         if (ret)
782                 return ret;
783
784         return fsnotify_perm(file, MAY_OPEN);
785 }
786
787 int security_task_create(unsigned long clone_flags)
788 {
789         return security_ops->task_create(clone_flags);
790 }
791
792 void security_task_free(struct task_struct *task)
793 {
794 #ifdef CONFIG_SECURITY_YAMA_STACKED
795         yama_task_free(task);
796 #endif
797         security_ops->task_free(task);
798 }
799
800 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
801 {
802         return security_ops->cred_alloc_blank(cred, gfp);
803 }
804
805 void security_cred_free(struct cred *cred)
806 {
807         security_ops->cred_free(cred);
808 }
809
810 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
811 {
812         return security_ops->cred_prepare(new, old, gfp);
813 }
814
815 void security_transfer_creds(struct cred *new, const struct cred *old)
816 {
817         security_ops->cred_transfer(new, old);
818 }
819
820 int security_kernel_act_as(struct cred *new, u32 secid)
821 {
822         return security_ops->kernel_act_as(new, secid);
823 }
824
825 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
826 {
827         return security_ops->kernel_create_files_as(new, inode);
828 }
829
830 int security_kernel_module_request(char *kmod_name)
831 {
832         return security_ops->kernel_module_request(kmod_name);
833 }
834
835 int security_kernel_module_from_file(struct file *file)
836 {
837         int ret;
838
839         ret = security_ops->kernel_module_from_file(file);
840         if (ret)
841                 return ret;
842         return ima_module_check(file);
843 }
844
845 int security_task_fix_setuid(struct cred *new, const struct cred *old,
846                              int flags)
847 {
848         return security_ops->task_fix_setuid(new, old, flags);
849 }
850
851 int security_task_setpgid(struct task_struct *p, pid_t pgid)
852 {
853         return security_ops->task_setpgid(p, pgid);
854 }
855
856 int security_task_getpgid(struct task_struct *p)
857 {
858         return security_ops->task_getpgid(p);
859 }
860
861 int security_task_getsid(struct task_struct *p)
862 {
863         return security_ops->task_getsid(p);
864 }
865
866 void security_task_getsecid(struct task_struct *p, u32 *secid)
867 {
868         security_ops->task_getsecid(p, secid);
869 }
870 EXPORT_SYMBOL(security_task_getsecid);
871
872 int security_task_setnice(struct task_struct *p, int nice)
873 {
874         return security_ops->task_setnice(p, nice);
875 }
876
877 int security_task_setioprio(struct task_struct *p, int ioprio)
878 {
879         return security_ops->task_setioprio(p, ioprio);
880 }
881
882 int security_task_getioprio(struct task_struct *p)
883 {
884         return security_ops->task_getioprio(p);
885 }
886
887 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
888                 struct rlimit *new_rlim)
889 {
890         return security_ops->task_setrlimit(p, resource, new_rlim);
891 }
892
893 int security_task_setscheduler(struct task_struct *p)
894 {
895         return security_ops->task_setscheduler(p);
896 }
897
898 int security_task_getscheduler(struct task_struct *p)
899 {
900         return security_ops->task_getscheduler(p);
901 }
902
903 int security_task_movememory(struct task_struct *p)
904 {
905         return security_ops->task_movememory(p);
906 }
907
908 int security_task_kill(struct task_struct *p, struct siginfo *info,
909                         int sig, u32 secid)
910 {
911         return security_ops->task_kill(p, info, sig, secid);
912 }
913
914 int security_task_wait(struct task_struct *p)
915 {
916         return security_ops->task_wait(p);
917 }
918
919 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
920                          unsigned long arg4, unsigned long arg5)
921 {
922 #ifdef CONFIG_SECURITY_YAMA_STACKED
923         int rc;
924         rc = yama_task_prctl(option, arg2, arg3, arg4, arg5);
925         if (rc != -ENOSYS)
926                 return rc;
927 #endif
928         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
929 }
930
931 void security_task_to_inode(struct task_struct *p, struct inode *inode)
932 {
933         security_ops->task_to_inode(p, inode);
934 }
935
936 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
937 {
938         return security_ops->ipc_permission(ipcp, flag);
939 }
940
941 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
942 {
943         security_ops->ipc_getsecid(ipcp, secid);
944 }
945
946 int security_msg_msg_alloc(struct msg_msg *msg)
947 {
948         return security_ops->msg_msg_alloc_security(msg);
949 }
950
951 void security_msg_msg_free(struct msg_msg *msg)
952 {
953         security_ops->msg_msg_free_security(msg);
954 }
955
956 int security_msg_queue_alloc(struct msg_queue *msq)
957 {
958         return security_ops->msg_queue_alloc_security(msq);
959 }
960
961 void security_msg_queue_free(struct msg_queue *msq)
962 {
963         security_ops->msg_queue_free_security(msq);
964 }
965
966 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
967 {
968         return security_ops->msg_queue_associate(msq, msqflg);
969 }
970
971 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
972 {
973         return security_ops->msg_queue_msgctl(msq, cmd);
974 }
975
976 int security_msg_queue_msgsnd(struct msg_queue *msq,
977                                struct msg_msg *msg, int msqflg)
978 {
979         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
980 }
981
982 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
983                                struct task_struct *target, long type, int mode)
984 {
985         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
986 }
987
988 int security_shm_alloc(struct shmid_kernel *shp)
989 {
990         return security_ops->shm_alloc_security(shp);
991 }
992
993 void security_shm_free(struct shmid_kernel *shp)
994 {
995         security_ops->shm_free_security(shp);
996 }
997
998 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
999 {
1000         return security_ops->shm_associate(shp, shmflg);
1001 }
1002
1003 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1004 {
1005         return security_ops->shm_shmctl(shp, cmd);
1006 }
1007
1008 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1009 {
1010         return security_ops->shm_shmat(shp, shmaddr, shmflg);
1011 }
1012
1013 int security_sem_alloc(struct sem_array *sma)
1014 {
1015         return security_ops->sem_alloc_security(sma);
1016 }
1017
1018 void security_sem_free(struct sem_array *sma)
1019 {
1020         security_ops->sem_free_security(sma);
1021 }
1022
1023 int security_sem_associate(struct sem_array *sma, int semflg)
1024 {
1025         return security_ops->sem_associate(sma, semflg);
1026 }
1027
1028 int security_sem_semctl(struct sem_array *sma, int cmd)
1029 {
1030         return security_ops->sem_semctl(sma, cmd);
1031 }
1032
1033 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1034                         unsigned nsops, int alter)
1035 {
1036         return security_ops->sem_semop(sma, sops, nsops, alter);
1037 }
1038
1039 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1040 {
1041         if (unlikely(inode && IS_PRIVATE(inode)))
1042                 return;
1043         security_ops->d_instantiate(dentry, inode);
1044 }
1045 EXPORT_SYMBOL(security_d_instantiate);
1046
1047 int security_getprocattr(struct task_struct *p, char *name, char **value)
1048 {
1049         return security_ops->getprocattr(p, name, value);
1050 }
1051
1052 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1053 {
1054         return security_ops->setprocattr(p, name, value, size);
1055 }
1056
1057 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1058 {
1059         return security_ops->netlink_send(sk, skb);
1060 }
1061
1062 int security_ismaclabel(const char *name)
1063 {
1064         return security_ops->ismaclabel(name);
1065 }
1066 EXPORT_SYMBOL(security_ismaclabel);
1067
1068 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1069 {
1070         return security_ops->secid_to_secctx(secid, secdata, seclen);
1071 }
1072 EXPORT_SYMBOL(security_secid_to_secctx);
1073
1074 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1075 {
1076         return security_ops->secctx_to_secid(secdata, seclen, secid);
1077 }
1078 EXPORT_SYMBOL(security_secctx_to_secid);
1079
1080 void security_release_secctx(char *secdata, u32 seclen)
1081 {
1082         security_ops->release_secctx(secdata, seclen);
1083 }
1084 EXPORT_SYMBOL(security_release_secctx);
1085
1086 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1087 {
1088         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1089 }
1090 EXPORT_SYMBOL(security_inode_notifysecctx);
1091
1092 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1093 {
1094         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1095 }
1096 EXPORT_SYMBOL(security_inode_setsecctx);
1097
1098 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1099 {
1100         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1101 }
1102 EXPORT_SYMBOL(security_inode_getsecctx);
1103
1104 #ifdef CONFIG_SECURITY_NETWORK
1105
1106 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1107 {
1108         return security_ops->unix_stream_connect(sock, other, newsk);
1109 }
1110 EXPORT_SYMBOL(security_unix_stream_connect);
1111
1112 int security_unix_may_send(struct socket *sock,  struct socket *other)
1113 {
1114         return security_ops->unix_may_send(sock, other);
1115 }
1116 EXPORT_SYMBOL(security_unix_may_send);
1117
1118 int security_socket_create(int family, int type, int protocol, int kern)
1119 {
1120         return security_ops->socket_create(family, type, protocol, kern);
1121 }
1122
1123 int security_socket_post_create(struct socket *sock, int family,
1124                                 int type, int protocol, int kern)
1125 {
1126         return security_ops->socket_post_create(sock, family, type,
1127                                                 protocol, kern);
1128 }
1129
1130 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1131 {
1132         return security_ops->socket_bind(sock, address, addrlen);
1133 }
1134
1135 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1136 {
1137         return security_ops->socket_connect(sock, address, addrlen);
1138 }
1139
1140 int security_socket_listen(struct socket *sock, int backlog)
1141 {
1142         return security_ops->socket_listen(sock, backlog);
1143 }
1144
1145 int security_socket_accept(struct socket *sock, struct socket *newsock)
1146 {
1147         return security_ops->socket_accept(sock, newsock);
1148 }
1149
1150 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1151 {
1152         return security_ops->socket_sendmsg(sock, msg, size);
1153 }
1154
1155 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1156                             int size, int flags)
1157 {
1158         return security_ops->socket_recvmsg(sock, msg, size, flags);
1159 }
1160
1161 int security_socket_getsockname(struct socket *sock)
1162 {
1163         return security_ops->socket_getsockname(sock);
1164 }
1165
1166 int security_socket_getpeername(struct socket *sock)
1167 {
1168         return security_ops->socket_getpeername(sock);
1169 }
1170
1171 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1172 {
1173         return security_ops->socket_getsockopt(sock, level, optname);
1174 }
1175
1176 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1177 {
1178         return security_ops->socket_setsockopt(sock, level, optname);
1179 }
1180
1181 int security_socket_shutdown(struct socket *sock, int how)
1182 {
1183         return security_ops->socket_shutdown(sock, how);
1184 }
1185
1186 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1187 {
1188         return security_ops->socket_sock_rcv_skb(sk, skb);
1189 }
1190 EXPORT_SYMBOL(security_sock_rcv_skb);
1191
1192 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1193                                       int __user *optlen, unsigned len)
1194 {
1195         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1196 }
1197
1198 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1199 {
1200         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1201 }
1202 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1203
1204 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1205 {
1206         return security_ops->sk_alloc_security(sk, family, priority);
1207 }
1208
1209 void security_sk_free(struct sock *sk)
1210 {
1211         security_ops->sk_free_security(sk);
1212 }
1213
1214 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1215 {
1216         security_ops->sk_clone_security(sk, newsk);
1217 }
1218 EXPORT_SYMBOL(security_sk_clone);
1219
1220 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1221 {
1222         security_ops->sk_getsecid(sk, &fl->flowi_secid);
1223 }
1224 EXPORT_SYMBOL(security_sk_classify_flow);
1225
1226 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1227 {
1228         security_ops->req_classify_flow(req, fl);
1229 }
1230 EXPORT_SYMBOL(security_req_classify_flow);
1231
1232 void security_sock_graft(struct sock *sk, struct socket *parent)
1233 {
1234         security_ops->sock_graft(sk, parent);
1235 }
1236 EXPORT_SYMBOL(security_sock_graft);
1237
1238 int security_inet_conn_request(struct sock *sk,
1239                         struct sk_buff *skb, struct request_sock *req)
1240 {
1241         return security_ops->inet_conn_request(sk, skb, req);
1242 }
1243 EXPORT_SYMBOL(security_inet_conn_request);
1244
1245 void security_inet_csk_clone(struct sock *newsk,
1246                         const struct request_sock *req)
1247 {
1248         security_ops->inet_csk_clone(newsk, req);
1249 }
1250
1251 void security_inet_conn_established(struct sock *sk,
1252                         struct sk_buff *skb)
1253 {
1254         security_ops->inet_conn_established(sk, skb);
1255 }
1256
1257 int security_secmark_relabel_packet(u32 secid)
1258 {
1259         return security_ops->secmark_relabel_packet(secid);
1260 }
1261 EXPORT_SYMBOL(security_secmark_relabel_packet);
1262
1263 void security_secmark_refcount_inc(void)
1264 {
1265         security_ops->secmark_refcount_inc();
1266 }
1267 EXPORT_SYMBOL(security_secmark_refcount_inc);
1268
1269 void security_secmark_refcount_dec(void)
1270 {
1271         security_ops->secmark_refcount_dec();
1272 }
1273 EXPORT_SYMBOL(security_secmark_refcount_dec);
1274
1275 int security_tun_dev_alloc_security(void **security)
1276 {
1277         return security_ops->tun_dev_alloc_security(security);
1278 }
1279 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1280
1281 void security_tun_dev_free_security(void *security)
1282 {
1283         security_ops->tun_dev_free_security(security);
1284 }
1285 EXPORT_SYMBOL(security_tun_dev_free_security);
1286
1287 int security_tun_dev_create(void)
1288 {
1289         return security_ops->tun_dev_create();
1290 }
1291 EXPORT_SYMBOL(security_tun_dev_create);
1292
1293 int security_tun_dev_attach_queue(void *security)
1294 {
1295         return security_ops->tun_dev_attach_queue(security);
1296 }
1297 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1298
1299 int security_tun_dev_attach(struct sock *sk, void *security)
1300 {
1301         return security_ops->tun_dev_attach(sk, security);
1302 }
1303 EXPORT_SYMBOL(security_tun_dev_attach);
1304
1305 int security_tun_dev_open(void *security)
1306 {
1307         return security_ops->tun_dev_open(security);
1308 }
1309 EXPORT_SYMBOL(security_tun_dev_open);
1310
1311 void security_skb_owned_by(struct sk_buff *skb, struct sock *sk)
1312 {
1313         security_ops->skb_owned_by(skb, sk);
1314 }
1315
1316 #endif  /* CONFIG_SECURITY_NETWORK */
1317
1318 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1319
1320 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1321 {
1322         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1323 }
1324 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1325
1326 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1327                               struct xfrm_sec_ctx **new_ctxp)
1328 {
1329         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1330 }
1331
1332 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1333 {
1334         security_ops->xfrm_policy_free_security(ctx);
1335 }
1336 EXPORT_SYMBOL(security_xfrm_policy_free);
1337
1338 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1339 {
1340         return security_ops->xfrm_policy_delete_security(ctx);
1341 }
1342
1343 int security_xfrm_state_alloc(struct xfrm_state *x,
1344                               struct xfrm_user_sec_ctx *sec_ctx)
1345 {
1346         return security_ops->xfrm_state_alloc(x, sec_ctx);
1347 }
1348 EXPORT_SYMBOL(security_xfrm_state_alloc);
1349
1350 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1351                                       struct xfrm_sec_ctx *polsec, u32 secid)
1352 {
1353         return security_ops->xfrm_state_alloc_acquire(x, polsec, secid);
1354 }
1355
1356 int security_xfrm_state_delete(struct xfrm_state *x)
1357 {
1358         return security_ops->xfrm_state_delete_security(x);
1359 }
1360 EXPORT_SYMBOL(security_xfrm_state_delete);
1361
1362 void security_xfrm_state_free(struct xfrm_state *x)
1363 {
1364         security_ops->xfrm_state_free_security(x);
1365 }
1366
1367 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1368 {
1369         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1370 }
1371
1372 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1373                                        struct xfrm_policy *xp,
1374                                        const struct flowi *fl)
1375 {
1376         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1377 }
1378
1379 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1380 {
1381         return security_ops->xfrm_decode_session(skb, secid, 1);
1382 }
1383
1384 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1385 {
1386         int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1387
1388         BUG_ON(rc);
1389 }
1390 EXPORT_SYMBOL(security_skb_classify_flow);
1391
1392 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1393
1394 #ifdef CONFIG_KEYS
1395
1396 int security_key_alloc(struct key *key, const struct cred *cred,
1397                        unsigned long flags)
1398 {
1399         return security_ops->key_alloc(key, cred, flags);
1400 }
1401
1402 void security_key_free(struct key *key)
1403 {
1404         security_ops->key_free(key);
1405 }
1406
1407 int security_key_permission(key_ref_t key_ref,
1408                             const struct cred *cred, key_perm_t perm)
1409 {
1410         return security_ops->key_permission(key_ref, cred, perm);
1411 }
1412
1413 int security_key_getsecurity(struct key *key, char **_buffer)
1414 {
1415         return security_ops->key_getsecurity(key, _buffer);
1416 }
1417
1418 #endif  /* CONFIG_KEYS */
1419
1420 #ifdef CONFIG_AUDIT
1421
1422 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1423 {
1424         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1425 }
1426
1427 int security_audit_rule_known(struct audit_krule *krule)
1428 {
1429         return security_ops->audit_rule_known(krule);
1430 }
1431
1432 void security_audit_rule_free(void *lsmrule)
1433 {
1434         security_ops->audit_rule_free(lsmrule);
1435 }
1436
1437 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1438                               struct audit_context *actx)
1439 {
1440         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1441 }
1442
1443 #endif /* CONFIG_AUDIT */