Merge tag 'selinux-pr-20170831' of git://git.kernel.org/pub/scm/linux/kernel/git...
[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  * Copyright (C) 2016 Mellanox Technologies
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 #include <linux/capability.h>
16 #include <linux/dcache.h>
17 #include <linux/module.h>
18 #include <linux/init.h>
19 #include <linux/kernel.h>
20 #include <linux/lsm_hooks.h>
21 #include <linux/integrity.h>
22 #include <linux/ima.h>
23 #include <linux/evm.h>
24 #include <linux/fsnotify.h>
25 #include <linux/mman.h>
26 #include <linux/mount.h>
27 #include <linux/personality.h>
28 #include <linux/backing-dev.h>
29 #include <linux/string.h>
30 #include <net/flow.h>
31
32 #define MAX_LSM_EVM_XATTR       2
33
34 /* Maximum number of letters for an LSM name string */
35 #define SECURITY_NAME_MAX       10
36
37 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
38 static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain);
39
40 char *lsm_names;
41 /* Boot-time LSM user choice */
42 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
43         CONFIG_DEFAULT_SECURITY;
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         int i;
63         struct list_head *list = (struct list_head *) &security_hook_heads;
64
65         for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head);
66              i++)
67                 INIT_LIST_HEAD(&list[i]);
68         pr_info("Security Framework initialized\n");
69
70         /*
71          * Load minor LSMs, with the capability module always first.
72          */
73         capability_add_hooks();
74         yama_add_hooks();
75         loadpin_add_hooks();
76
77         /*
78          * Load all the remaining security modules.
79          */
80         do_security_initcalls();
81
82         return 0;
83 }
84
85 /* Save user chosen LSM */
86 static int __init choose_lsm(char *str)
87 {
88         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
89         return 1;
90 }
91 __setup("security=", choose_lsm);
92
93 static bool match_last_lsm(const char *list, const char *lsm)
94 {
95         const char *last;
96
97         if (WARN_ON(!list || !lsm))
98                 return false;
99         last = strrchr(list, ',');
100         if (last)
101                 /* Pass the comma, strcmp() will check for '\0' */
102                 last++;
103         else
104                 last = list;
105         return !strcmp(last, lsm);
106 }
107
108 static int lsm_append(char *new, char **result)
109 {
110         char *cp;
111
112         if (*result == NULL) {
113                 *result = kstrdup(new, GFP_KERNEL);
114         } else {
115                 /* Check if it is the last registered name */
116                 if (match_last_lsm(*result, new))
117                         return 0;
118                 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
119                 if (cp == NULL)
120                         return -ENOMEM;
121                 kfree(*result);
122                 *result = cp;
123         }
124         return 0;
125 }
126
127 /**
128  * security_module_enable - Load given security module on boot ?
129  * @module: the name of the module
130  *
131  * Each LSM must pass this method before registering its own operations
132  * to avoid security registration races. This method may also be used
133  * to check if your LSM is currently loaded during kernel initialization.
134  *
135  * Returns:
136  *
137  * true if:
138  *
139  * - The passed LSM is the one chosen by user at boot time,
140  * - or the passed LSM is configured as the default and the user did not
141  *   choose an alternate LSM at boot time.
142  *
143  * Otherwise, return false.
144  */
145 int __init security_module_enable(const char *module)
146 {
147         return !strcmp(module, chosen_lsm);
148 }
149
150 /**
151  * security_add_hooks - Add a modules hooks to the hook lists.
152  * @hooks: the hooks to add
153  * @count: the number of hooks to add
154  * @lsm: the name of the security module
155  *
156  * Each LSM has to register its hooks with the infrastructure.
157  */
158 void __init security_add_hooks(struct security_hook_list *hooks, int count,
159                                 char *lsm)
160 {
161         int i;
162
163         for (i = 0; i < count; i++) {
164                 hooks[i].lsm = lsm;
165                 list_add_tail_rcu(&hooks[i].list, hooks[i].head);
166         }
167         if (lsm_append(lsm, &lsm_names) < 0)
168                 panic("%s - Cannot get early memory.\n", __func__);
169 }
170
171 int call_lsm_notifier(enum lsm_event event, void *data)
172 {
173         return atomic_notifier_call_chain(&lsm_notifier_chain, event, data);
174 }
175 EXPORT_SYMBOL(call_lsm_notifier);
176
177 int register_lsm_notifier(struct notifier_block *nb)
178 {
179         return atomic_notifier_chain_register(&lsm_notifier_chain, nb);
180 }
181 EXPORT_SYMBOL(register_lsm_notifier);
182
183 int unregister_lsm_notifier(struct notifier_block *nb)
184 {
185         return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb);
186 }
187 EXPORT_SYMBOL(unregister_lsm_notifier);
188
189 /*
190  * Hook list operation macros.
191  *
192  * call_void_hook:
193  *      This is a hook that does not return a value.
194  *
195  * call_int_hook:
196  *      This is a hook that returns a value.
197  */
198
199 #define call_void_hook(FUNC, ...)                               \
200         do {                                                    \
201                 struct security_hook_list *P;                   \
202                                                                 \
203                 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
204                         P->hook.FUNC(__VA_ARGS__);              \
205         } while (0)
206
207 #define call_int_hook(FUNC, IRC, ...) ({                        \
208         int RC = IRC;                                           \
209         do {                                                    \
210                 struct security_hook_list *P;                   \
211                                                                 \
212                 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
213                         RC = P->hook.FUNC(__VA_ARGS__);         \
214                         if (RC != 0)                            \
215                                 break;                          \
216                 }                                               \
217         } while (0);                                            \
218         RC;                                                     \
219 })
220
221 /* Security operations */
222
223 int security_binder_set_context_mgr(struct task_struct *mgr)
224 {
225         return call_int_hook(binder_set_context_mgr, 0, mgr);
226 }
227
228 int security_binder_transaction(struct task_struct *from,
229                                 struct task_struct *to)
230 {
231         return call_int_hook(binder_transaction, 0, from, to);
232 }
233
234 int security_binder_transfer_binder(struct task_struct *from,
235                                     struct task_struct *to)
236 {
237         return call_int_hook(binder_transfer_binder, 0, from, to);
238 }
239
240 int security_binder_transfer_file(struct task_struct *from,
241                                   struct task_struct *to, struct file *file)
242 {
243         return call_int_hook(binder_transfer_file, 0, from, to, file);
244 }
245
246 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
247 {
248         return call_int_hook(ptrace_access_check, 0, child, mode);
249 }
250
251 int security_ptrace_traceme(struct task_struct *parent)
252 {
253         return call_int_hook(ptrace_traceme, 0, parent);
254 }
255
256 int security_capget(struct task_struct *target,
257                      kernel_cap_t *effective,
258                      kernel_cap_t *inheritable,
259                      kernel_cap_t *permitted)
260 {
261         return call_int_hook(capget, 0, target,
262                                 effective, inheritable, permitted);
263 }
264
265 int security_capset(struct cred *new, const struct cred *old,
266                     const kernel_cap_t *effective,
267                     const kernel_cap_t *inheritable,
268                     const kernel_cap_t *permitted)
269 {
270         return call_int_hook(capset, 0, new, old,
271                                 effective, inheritable, permitted);
272 }
273
274 int security_capable(const struct cred *cred, struct user_namespace *ns,
275                      int cap)
276 {
277         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
278 }
279
280 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
281                              int cap)
282 {
283         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
284 }
285
286 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
287 {
288         return call_int_hook(quotactl, 0, cmds, type, id, sb);
289 }
290
291 int security_quota_on(struct dentry *dentry)
292 {
293         return call_int_hook(quota_on, 0, dentry);
294 }
295
296 int security_syslog(int type)
297 {
298         return call_int_hook(syslog, 0, type);
299 }
300
301 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
302 {
303         return call_int_hook(settime, 0, ts, tz);
304 }
305
306 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
307 {
308         struct security_hook_list *hp;
309         int cap_sys_admin = 1;
310         int rc;
311
312         /*
313          * The module will respond with a positive value if
314          * it thinks the __vm_enough_memory() call should be
315          * made with the cap_sys_admin set. If all of the modules
316          * agree that it should be set it will. If any module
317          * thinks it should not be set it won't.
318          */
319         list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
320                 rc = hp->hook.vm_enough_memory(mm, pages);
321                 if (rc <= 0) {
322                         cap_sys_admin = 0;
323                         break;
324                 }
325         }
326         return __vm_enough_memory(mm, pages, cap_sys_admin);
327 }
328
329 int security_bprm_set_creds(struct linux_binprm *bprm)
330 {
331         return call_int_hook(bprm_set_creds, 0, bprm);
332 }
333
334 int security_bprm_check(struct linux_binprm *bprm)
335 {
336         int ret;
337
338         ret = call_int_hook(bprm_check_security, 0, bprm);
339         if (ret)
340                 return ret;
341         return ima_bprm_check(bprm);
342 }
343
344 void security_bprm_committing_creds(struct linux_binprm *bprm)
345 {
346         call_void_hook(bprm_committing_creds, bprm);
347 }
348
349 void security_bprm_committed_creds(struct linux_binprm *bprm)
350 {
351         call_void_hook(bprm_committed_creds, bprm);
352 }
353
354 int security_sb_alloc(struct super_block *sb)
355 {
356         return call_int_hook(sb_alloc_security, 0, sb);
357 }
358
359 void security_sb_free(struct super_block *sb)
360 {
361         call_void_hook(sb_free_security, sb);
362 }
363
364 int security_sb_copy_data(char *orig, char *copy)
365 {
366         return call_int_hook(sb_copy_data, 0, orig, copy);
367 }
368 EXPORT_SYMBOL(security_sb_copy_data);
369
370 int security_sb_remount(struct super_block *sb, void *data)
371 {
372         return call_int_hook(sb_remount, 0, sb, data);
373 }
374
375 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
376 {
377         return call_int_hook(sb_kern_mount, 0, sb, flags, data);
378 }
379
380 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
381 {
382         return call_int_hook(sb_show_options, 0, m, sb);
383 }
384
385 int security_sb_statfs(struct dentry *dentry)
386 {
387         return call_int_hook(sb_statfs, 0, dentry);
388 }
389
390 int security_sb_mount(const char *dev_name, const struct path *path,
391                        const char *type, unsigned long flags, void *data)
392 {
393         return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
394 }
395
396 int security_sb_umount(struct vfsmount *mnt, int flags)
397 {
398         return call_int_hook(sb_umount, 0, mnt, flags);
399 }
400
401 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
402 {
403         return call_int_hook(sb_pivotroot, 0, old_path, new_path);
404 }
405
406 int security_sb_set_mnt_opts(struct super_block *sb,
407                                 struct security_mnt_opts *opts,
408                                 unsigned long kern_flags,
409                                 unsigned long *set_kern_flags)
410 {
411         return call_int_hook(sb_set_mnt_opts,
412                                 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
413                                 opts, kern_flags, set_kern_flags);
414 }
415 EXPORT_SYMBOL(security_sb_set_mnt_opts);
416
417 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
418                                 struct super_block *newsb,
419                                 unsigned long kern_flags,
420                                 unsigned long *set_kern_flags)
421 {
422         return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
423                                 kern_flags, set_kern_flags);
424 }
425 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
426
427 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
428 {
429         return call_int_hook(sb_parse_opts_str, 0, options, opts);
430 }
431 EXPORT_SYMBOL(security_sb_parse_opts_str);
432
433 int security_inode_alloc(struct inode *inode)
434 {
435         inode->i_security = NULL;
436         return call_int_hook(inode_alloc_security, 0, inode);
437 }
438
439 void security_inode_free(struct inode *inode)
440 {
441         integrity_inode_free(inode);
442         call_void_hook(inode_free_security, inode);
443 }
444
445 int security_dentry_init_security(struct dentry *dentry, int mode,
446                                         const struct qstr *name, void **ctx,
447                                         u32 *ctxlen)
448 {
449         return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
450                                 name, ctx, ctxlen);
451 }
452 EXPORT_SYMBOL(security_dentry_init_security);
453
454 int security_dentry_create_files_as(struct dentry *dentry, int mode,
455                                     struct qstr *name,
456                                     const struct cred *old, struct cred *new)
457 {
458         return call_int_hook(dentry_create_files_as, 0, dentry, mode,
459                                 name, old, new);
460 }
461 EXPORT_SYMBOL(security_dentry_create_files_as);
462
463 int security_inode_init_security(struct inode *inode, struct inode *dir,
464                                  const struct qstr *qstr,
465                                  const initxattrs initxattrs, void *fs_data)
466 {
467         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
468         struct xattr *lsm_xattr, *evm_xattr, *xattr;
469         int ret;
470
471         if (unlikely(IS_PRIVATE(inode)))
472                 return 0;
473
474         if (!initxattrs)
475                 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
476                                      dir, qstr, NULL, NULL, NULL);
477         memset(new_xattrs, 0, sizeof(new_xattrs));
478         lsm_xattr = new_xattrs;
479         ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
480                                                 &lsm_xattr->name,
481                                                 &lsm_xattr->value,
482                                                 &lsm_xattr->value_len);
483         if (ret)
484                 goto out;
485
486         evm_xattr = lsm_xattr + 1;
487         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
488         if (ret)
489                 goto out;
490         ret = initxattrs(inode, new_xattrs, fs_data);
491 out:
492         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
493                 kfree(xattr->value);
494         return (ret == -EOPNOTSUPP) ? 0 : ret;
495 }
496 EXPORT_SYMBOL(security_inode_init_security);
497
498 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
499                                      const struct qstr *qstr, const char **name,
500                                      void **value, size_t *len)
501 {
502         if (unlikely(IS_PRIVATE(inode)))
503                 return -EOPNOTSUPP;
504         return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
505                              qstr, name, value, len);
506 }
507 EXPORT_SYMBOL(security_old_inode_init_security);
508
509 #ifdef CONFIG_SECURITY_PATH
510 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
511                         unsigned int dev)
512 {
513         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
514                 return 0;
515         return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
516 }
517 EXPORT_SYMBOL(security_path_mknod);
518
519 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
520 {
521         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
522                 return 0;
523         return call_int_hook(path_mkdir, 0, dir, dentry, mode);
524 }
525 EXPORT_SYMBOL(security_path_mkdir);
526
527 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
528 {
529         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
530                 return 0;
531         return call_int_hook(path_rmdir, 0, dir, dentry);
532 }
533
534 int security_path_unlink(const struct path *dir, struct dentry *dentry)
535 {
536         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
537                 return 0;
538         return call_int_hook(path_unlink, 0, dir, dentry);
539 }
540 EXPORT_SYMBOL(security_path_unlink);
541
542 int security_path_symlink(const struct path *dir, struct dentry *dentry,
543                           const char *old_name)
544 {
545         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
546                 return 0;
547         return call_int_hook(path_symlink, 0, dir, dentry, old_name);
548 }
549
550 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
551                        struct dentry *new_dentry)
552 {
553         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
554                 return 0;
555         return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
556 }
557
558 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
559                          const struct path *new_dir, struct dentry *new_dentry,
560                          unsigned int flags)
561 {
562         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
563                      (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
564                 return 0;
565
566         if (flags & RENAME_EXCHANGE) {
567                 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
568                                         old_dir, old_dentry);
569                 if (err)
570                         return err;
571         }
572
573         return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
574                                 new_dentry);
575 }
576 EXPORT_SYMBOL(security_path_rename);
577
578 int security_path_truncate(const struct path *path)
579 {
580         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
581                 return 0;
582         return call_int_hook(path_truncate, 0, path);
583 }
584
585 int security_path_chmod(const struct path *path, umode_t mode)
586 {
587         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
588                 return 0;
589         return call_int_hook(path_chmod, 0, path, mode);
590 }
591
592 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
593 {
594         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
595                 return 0;
596         return call_int_hook(path_chown, 0, path, uid, gid);
597 }
598
599 int security_path_chroot(const struct path *path)
600 {
601         return call_int_hook(path_chroot, 0, path);
602 }
603 #endif
604
605 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
606 {
607         if (unlikely(IS_PRIVATE(dir)))
608                 return 0;
609         return call_int_hook(inode_create, 0, dir, dentry, mode);
610 }
611 EXPORT_SYMBOL_GPL(security_inode_create);
612
613 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
614                          struct dentry *new_dentry)
615 {
616         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
617                 return 0;
618         return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
619 }
620
621 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
622 {
623         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
624                 return 0;
625         return call_int_hook(inode_unlink, 0, dir, dentry);
626 }
627
628 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
629                             const char *old_name)
630 {
631         if (unlikely(IS_PRIVATE(dir)))
632                 return 0;
633         return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
634 }
635
636 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
637 {
638         if (unlikely(IS_PRIVATE(dir)))
639                 return 0;
640         return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
641 }
642 EXPORT_SYMBOL_GPL(security_inode_mkdir);
643
644 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
645 {
646         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
647                 return 0;
648         return call_int_hook(inode_rmdir, 0, dir, dentry);
649 }
650
651 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
652 {
653         if (unlikely(IS_PRIVATE(dir)))
654                 return 0;
655         return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
656 }
657
658 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
659                            struct inode *new_dir, struct dentry *new_dentry,
660                            unsigned int flags)
661 {
662         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
663             (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
664                 return 0;
665
666         if (flags & RENAME_EXCHANGE) {
667                 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
668                                                      old_dir, old_dentry);
669                 if (err)
670                         return err;
671         }
672
673         return call_int_hook(inode_rename, 0, old_dir, old_dentry,
674                                            new_dir, new_dentry);
675 }
676
677 int security_inode_readlink(struct dentry *dentry)
678 {
679         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
680                 return 0;
681         return call_int_hook(inode_readlink, 0, dentry);
682 }
683
684 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
685                                bool rcu)
686 {
687         if (unlikely(IS_PRIVATE(inode)))
688                 return 0;
689         return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
690 }
691
692 int security_inode_permission(struct inode *inode, int mask)
693 {
694         if (unlikely(IS_PRIVATE(inode)))
695                 return 0;
696         return call_int_hook(inode_permission, 0, inode, mask);
697 }
698
699 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
700 {
701         int ret;
702
703         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
704                 return 0;
705         ret = call_int_hook(inode_setattr, 0, dentry, attr);
706         if (ret)
707                 return ret;
708         return evm_inode_setattr(dentry, attr);
709 }
710 EXPORT_SYMBOL_GPL(security_inode_setattr);
711
712 int security_inode_getattr(const struct path *path)
713 {
714         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
715                 return 0;
716         return call_int_hook(inode_getattr, 0, path);
717 }
718
719 int security_inode_setxattr(struct dentry *dentry, const char *name,
720                             const void *value, size_t size, int flags)
721 {
722         int ret;
723
724         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
725                 return 0;
726         /*
727          * SELinux and Smack integrate the cap call,
728          * so assume that all LSMs supplying this call do so.
729          */
730         ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
731                                 flags);
732
733         if (ret == 1)
734                 ret = cap_inode_setxattr(dentry, name, value, size, flags);
735         if (ret)
736                 return ret;
737         ret = ima_inode_setxattr(dentry, name, value, size);
738         if (ret)
739                 return ret;
740         return evm_inode_setxattr(dentry, name, value, size);
741 }
742
743 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
744                                   const void *value, size_t size, int flags)
745 {
746         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
747                 return;
748         call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
749         evm_inode_post_setxattr(dentry, name, value, size);
750 }
751
752 int security_inode_getxattr(struct dentry *dentry, const char *name)
753 {
754         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
755                 return 0;
756         return call_int_hook(inode_getxattr, 0, dentry, name);
757 }
758
759 int security_inode_listxattr(struct dentry *dentry)
760 {
761         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
762                 return 0;
763         return call_int_hook(inode_listxattr, 0, dentry);
764 }
765
766 int security_inode_removexattr(struct dentry *dentry, const char *name)
767 {
768         int ret;
769
770         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
771                 return 0;
772         /*
773          * SELinux and Smack integrate the cap call,
774          * so assume that all LSMs supplying this call do so.
775          */
776         ret = call_int_hook(inode_removexattr, 1, dentry, name);
777         if (ret == 1)
778                 ret = cap_inode_removexattr(dentry, name);
779         if (ret)
780                 return ret;
781         ret = ima_inode_removexattr(dentry, name);
782         if (ret)
783                 return ret;
784         return evm_inode_removexattr(dentry, name);
785 }
786
787 int security_inode_need_killpriv(struct dentry *dentry)
788 {
789         return call_int_hook(inode_need_killpriv, 0, dentry);
790 }
791
792 int security_inode_killpriv(struct dentry *dentry)
793 {
794         return call_int_hook(inode_killpriv, 0, dentry);
795 }
796
797 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
798 {
799         struct security_hook_list *hp;
800         int rc;
801
802         if (unlikely(IS_PRIVATE(inode)))
803                 return -EOPNOTSUPP;
804         /*
805          * Only one module will provide an attribute with a given name.
806          */
807         list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
808                 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
809                 if (rc != -EOPNOTSUPP)
810                         return rc;
811         }
812         return -EOPNOTSUPP;
813 }
814
815 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
816 {
817         struct security_hook_list *hp;
818         int rc;
819
820         if (unlikely(IS_PRIVATE(inode)))
821                 return -EOPNOTSUPP;
822         /*
823          * Only one module will provide an attribute with a given name.
824          */
825         list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
826                 rc = hp->hook.inode_setsecurity(inode, name, value, size,
827                                                                 flags);
828                 if (rc != -EOPNOTSUPP)
829                         return rc;
830         }
831         return -EOPNOTSUPP;
832 }
833
834 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
835 {
836         if (unlikely(IS_PRIVATE(inode)))
837                 return 0;
838         return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
839 }
840 EXPORT_SYMBOL(security_inode_listsecurity);
841
842 void security_inode_getsecid(struct inode *inode, u32 *secid)
843 {
844         call_void_hook(inode_getsecid, inode, secid);
845 }
846
847 int security_inode_copy_up(struct dentry *src, struct cred **new)
848 {
849         return call_int_hook(inode_copy_up, 0, src, new);
850 }
851 EXPORT_SYMBOL(security_inode_copy_up);
852
853 int security_inode_copy_up_xattr(const char *name)
854 {
855         return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
856 }
857 EXPORT_SYMBOL(security_inode_copy_up_xattr);
858
859 int security_file_permission(struct file *file, int mask)
860 {
861         int ret;
862
863         ret = call_int_hook(file_permission, 0, file, mask);
864         if (ret)
865                 return ret;
866
867         return fsnotify_perm(file, mask);
868 }
869
870 int security_file_alloc(struct file *file)
871 {
872         return call_int_hook(file_alloc_security, 0, file);
873 }
874
875 void security_file_free(struct file *file)
876 {
877         call_void_hook(file_free_security, file);
878 }
879
880 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
881 {
882         return call_int_hook(file_ioctl, 0, file, cmd, arg);
883 }
884
885 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
886 {
887         /*
888          * Does we have PROT_READ and does the application expect
889          * it to imply PROT_EXEC?  If not, nothing to talk about...
890          */
891         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
892                 return prot;
893         if (!(current->personality & READ_IMPLIES_EXEC))
894                 return prot;
895         /*
896          * if that's an anonymous mapping, let it.
897          */
898         if (!file)
899                 return prot | PROT_EXEC;
900         /*
901          * ditto if it's not on noexec mount, except that on !MMU we need
902          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
903          */
904         if (!path_noexec(&file->f_path)) {
905 #ifndef CONFIG_MMU
906                 if (file->f_op->mmap_capabilities) {
907                         unsigned caps = file->f_op->mmap_capabilities(file);
908                         if (!(caps & NOMMU_MAP_EXEC))
909                                 return prot;
910                 }
911 #endif
912                 return prot | PROT_EXEC;
913         }
914         /* anything on noexec mount won't get PROT_EXEC */
915         return prot;
916 }
917
918 int security_mmap_file(struct file *file, unsigned long prot,
919                         unsigned long flags)
920 {
921         int ret;
922         ret = call_int_hook(mmap_file, 0, file, prot,
923                                         mmap_prot(file, prot), flags);
924         if (ret)
925                 return ret;
926         return ima_file_mmap(file, prot);
927 }
928
929 int security_mmap_addr(unsigned long addr)
930 {
931         return call_int_hook(mmap_addr, 0, addr);
932 }
933
934 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
935                             unsigned long prot)
936 {
937         return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
938 }
939
940 int security_file_lock(struct file *file, unsigned int cmd)
941 {
942         return call_int_hook(file_lock, 0, file, cmd);
943 }
944
945 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
946 {
947         return call_int_hook(file_fcntl, 0, file, cmd, arg);
948 }
949
950 void security_file_set_fowner(struct file *file)
951 {
952         call_void_hook(file_set_fowner, file);
953 }
954
955 int security_file_send_sigiotask(struct task_struct *tsk,
956                                   struct fown_struct *fown, int sig)
957 {
958         return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
959 }
960
961 int security_file_receive(struct file *file)
962 {
963         return call_int_hook(file_receive, 0, file);
964 }
965
966 int security_file_open(struct file *file, const struct cred *cred)
967 {
968         int ret;
969
970         ret = call_int_hook(file_open, 0, file, cred);
971         if (ret)
972                 return ret;
973
974         return fsnotify_perm(file, MAY_OPEN);
975 }
976
977 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
978 {
979         return call_int_hook(task_alloc, 0, task, clone_flags);
980 }
981
982 void security_task_free(struct task_struct *task)
983 {
984         call_void_hook(task_free, task);
985 }
986
987 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
988 {
989         return call_int_hook(cred_alloc_blank, 0, cred, gfp);
990 }
991
992 void security_cred_free(struct cred *cred)
993 {
994         call_void_hook(cred_free, cred);
995 }
996
997 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
998 {
999         return call_int_hook(cred_prepare, 0, new, old, gfp);
1000 }
1001
1002 void security_transfer_creds(struct cred *new, const struct cred *old)
1003 {
1004         call_void_hook(cred_transfer, new, old);
1005 }
1006
1007 int security_kernel_act_as(struct cred *new, u32 secid)
1008 {
1009         return call_int_hook(kernel_act_as, 0, new, secid);
1010 }
1011
1012 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1013 {
1014         return call_int_hook(kernel_create_files_as, 0, new, inode);
1015 }
1016
1017 int security_kernel_module_request(char *kmod_name)
1018 {
1019         return call_int_hook(kernel_module_request, 0, kmod_name);
1020 }
1021
1022 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1023 {
1024         int ret;
1025
1026         ret = call_int_hook(kernel_read_file, 0, file, id);
1027         if (ret)
1028                 return ret;
1029         return ima_read_file(file, id);
1030 }
1031 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1032
1033 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1034                                    enum kernel_read_file_id id)
1035 {
1036         int ret;
1037
1038         ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1039         if (ret)
1040                 return ret;
1041         return ima_post_read_file(file, buf, size, id);
1042 }
1043 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1044
1045 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1046                              int flags)
1047 {
1048         return call_int_hook(task_fix_setuid, 0, new, old, flags);
1049 }
1050
1051 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1052 {
1053         return call_int_hook(task_setpgid, 0, p, pgid);
1054 }
1055
1056 int security_task_getpgid(struct task_struct *p)
1057 {
1058         return call_int_hook(task_getpgid, 0, p);
1059 }
1060
1061 int security_task_getsid(struct task_struct *p)
1062 {
1063         return call_int_hook(task_getsid, 0, p);
1064 }
1065
1066 void security_task_getsecid(struct task_struct *p, u32 *secid)
1067 {
1068         *secid = 0;
1069         call_void_hook(task_getsecid, p, secid);
1070 }
1071 EXPORT_SYMBOL(security_task_getsecid);
1072
1073 int security_task_setnice(struct task_struct *p, int nice)
1074 {
1075         return call_int_hook(task_setnice, 0, p, nice);
1076 }
1077
1078 int security_task_setioprio(struct task_struct *p, int ioprio)
1079 {
1080         return call_int_hook(task_setioprio, 0, p, ioprio);
1081 }
1082
1083 int security_task_getioprio(struct task_struct *p)
1084 {
1085         return call_int_hook(task_getioprio, 0, p);
1086 }
1087
1088 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1089                           unsigned int flags)
1090 {
1091         return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1092 }
1093
1094 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1095                 struct rlimit *new_rlim)
1096 {
1097         return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1098 }
1099
1100 int security_task_setscheduler(struct task_struct *p)
1101 {
1102         return call_int_hook(task_setscheduler, 0, p);
1103 }
1104
1105 int security_task_getscheduler(struct task_struct *p)
1106 {
1107         return call_int_hook(task_getscheduler, 0, p);
1108 }
1109
1110 int security_task_movememory(struct task_struct *p)
1111 {
1112         return call_int_hook(task_movememory, 0, p);
1113 }
1114
1115 int security_task_kill(struct task_struct *p, struct siginfo *info,
1116                         int sig, u32 secid)
1117 {
1118         return call_int_hook(task_kill, 0, p, info, sig, secid);
1119 }
1120
1121 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1122                          unsigned long arg4, unsigned long arg5)
1123 {
1124         int thisrc;
1125         int rc = -ENOSYS;
1126         struct security_hook_list *hp;
1127
1128         list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1129                 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1130                 if (thisrc != -ENOSYS) {
1131                         rc = thisrc;
1132                         if (thisrc != 0)
1133                                 break;
1134                 }
1135         }
1136         return rc;
1137 }
1138
1139 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1140 {
1141         call_void_hook(task_to_inode, p, inode);
1142 }
1143
1144 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1145 {
1146         return call_int_hook(ipc_permission, 0, ipcp, flag);
1147 }
1148
1149 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1150 {
1151         *secid = 0;
1152         call_void_hook(ipc_getsecid, ipcp, secid);
1153 }
1154
1155 int security_msg_msg_alloc(struct msg_msg *msg)
1156 {
1157         return call_int_hook(msg_msg_alloc_security, 0, msg);
1158 }
1159
1160 void security_msg_msg_free(struct msg_msg *msg)
1161 {
1162         call_void_hook(msg_msg_free_security, msg);
1163 }
1164
1165 int security_msg_queue_alloc(struct msg_queue *msq)
1166 {
1167         return call_int_hook(msg_queue_alloc_security, 0, msq);
1168 }
1169
1170 void security_msg_queue_free(struct msg_queue *msq)
1171 {
1172         call_void_hook(msg_queue_free_security, msq);
1173 }
1174
1175 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
1176 {
1177         return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1178 }
1179
1180 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1181 {
1182         return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1183 }
1184
1185 int security_msg_queue_msgsnd(struct msg_queue *msq,
1186                                struct msg_msg *msg, int msqflg)
1187 {
1188         return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1189 }
1190
1191 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1192                                struct task_struct *target, long type, int mode)
1193 {
1194         return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1195 }
1196
1197 int security_shm_alloc(struct shmid_kernel *shp)
1198 {
1199         return call_int_hook(shm_alloc_security, 0, shp);
1200 }
1201
1202 void security_shm_free(struct shmid_kernel *shp)
1203 {
1204         call_void_hook(shm_free_security, shp);
1205 }
1206
1207 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1208 {
1209         return call_int_hook(shm_associate, 0, shp, shmflg);
1210 }
1211
1212 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1213 {
1214         return call_int_hook(shm_shmctl, 0, shp, cmd);
1215 }
1216
1217 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1218 {
1219         return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1220 }
1221
1222 int security_sem_alloc(struct sem_array *sma)
1223 {
1224         return call_int_hook(sem_alloc_security, 0, sma);
1225 }
1226
1227 void security_sem_free(struct sem_array *sma)
1228 {
1229         call_void_hook(sem_free_security, sma);
1230 }
1231
1232 int security_sem_associate(struct sem_array *sma, int semflg)
1233 {
1234         return call_int_hook(sem_associate, 0, sma, semflg);
1235 }
1236
1237 int security_sem_semctl(struct sem_array *sma, int cmd)
1238 {
1239         return call_int_hook(sem_semctl, 0, sma, cmd);
1240 }
1241
1242 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1243                         unsigned nsops, int alter)
1244 {
1245         return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1246 }
1247
1248 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1249 {
1250         if (unlikely(inode && IS_PRIVATE(inode)))
1251                 return;
1252         call_void_hook(d_instantiate, dentry, inode);
1253 }
1254 EXPORT_SYMBOL(security_d_instantiate);
1255
1256 int security_getprocattr(struct task_struct *p, char *name, char **value)
1257 {
1258         return call_int_hook(getprocattr, -EINVAL, p, name, value);
1259 }
1260
1261 int security_setprocattr(const char *name, void *value, size_t size)
1262 {
1263         return call_int_hook(setprocattr, -EINVAL, name, value, size);
1264 }
1265
1266 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1267 {
1268         return call_int_hook(netlink_send, 0, sk, skb);
1269 }
1270
1271 int security_ismaclabel(const char *name)
1272 {
1273         return call_int_hook(ismaclabel, 0, name);
1274 }
1275 EXPORT_SYMBOL(security_ismaclabel);
1276
1277 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1278 {
1279         return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1280                                 seclen);
1281 }
1282 EXPORT_SYMBOL(security_secid_to_secctx);
1283
1284 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1285 {
1286         *secid = 0;
1287         return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1288 }
1289 EXPORT_SYMBOL(security_secctx_to_secid);
1290
1291 void security_release_secctx(char *secdata, u32 seclen)
1292 {
1293         call_void_hook(release_secctx, secdata, seclen);
1294 }
1295 EXPORT_SYMBOL(security_release_secctx);
1296
1297 void security_inode_invalidate_secctx(struct inode *inode)
1298 {
1299         call_void_hook(inode_invalidate_secctx, inode);
1300 }
1301 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1302
1303 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1304 {
1305         return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1306 }
1307 EXPORT_SYMBOL(security_inode_notifysecctx);
1308
1309 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1310 {
1311         return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1312 }
1313 EXPORT_SYMBOL(security_inode_setsecctx);
1314
1315 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1316 {
1317         return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1318 }
1319 EXPORT_SYMBOL(security_inode_getsecctx);
1320
1321 #ifdef CONFIG_SECURITY_NETWORK
1322
1323 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1324 {
1325         return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1326 }
1327 EXPORT_SYMBOL(security_unix_stream_connect);
1328
1329 int security_unix_may_send(struct socket *sock,  struct socket *other)
1330 {
1331         return call_int_hook(unix_may_send, 0, sock, other);
1332 }
1333 EXPORT_SYMBOL(security_unix_may_send);
1334
1335 int security_socket_create(int family, int type, int protocol, int kern)
1336 {
1337         return call_int_hook(socket_create, 0, family, type, protocol, kern);
1338 }
1339
1340 int security_socket_post_create(struct socket *sock, int family,
1341                                 int type, int protocol, int kern)
1342 {
1343         return call_int_hook(socket_post_create, 0, sock, family, type,
1344                                                 protocol, kern);
1345 }
1346
1347 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1348 {
1349         return call_int_hook(socket_bind, 0, sock, address, addrlen);
1350 }
1351
1352 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1353 {
1354         return call_int_hook(socket_connect, 0, sock, address, addrlen);
1355 }
1356
1357 int security_socket_listen(struct socket *sock, int backlog)
1358 {
1359         return call_int_hook(socket_listen, 0, sock, backlog);
1360 }
1361
1362 int security_socket_accept(struct socket *sock, struct socket *newsock)
1363 {
1364         return call_int_hook(socket_accept, 0, sock, newsock);
1365 }
1366
1367 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1368 {
1369         return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1370 }
1371
1372 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1373                             int size, int flags)
1374 {
1375         return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1376 }
1377
1378 int security_socket_getsockname(struct socket *sock)
1379 {
1380         return call_int_hook(socket_getsockname, 0, sock);
1381 }
1382
1383 int security_socket_getpeername(struct socket *sock)
1384 {
1385         return call_int_hook(socket_getpeername, 0, sock);
1386 }
1387
1388 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1389 {
1390         return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1391 }
1392
1393 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1394 {
1395         return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1396 }
1397
1398 int security_socket_shutdown(struct socket *sock, int how)
1399 {
1400         return call_int_hook(socket_shutdown, 0, sock, how);
1401 }
1402
1403 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1404 {
1405         return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1406 }
1407 EXPORT_SYMBOL(security_sock_rcv_skb);
1408
1409 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1410                                       int __user *optlen, unsigned len)
1411 {
1412         return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1413                                 optval, optlen, len);
1414 }
1415
1416 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1417 {
1418         return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1419                              skb, secid);
1420 }
1421 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1422
1423 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1424 {
1425         return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1426 }
1427
1428 void security_sk_free(struct sock *sk)
1429 {
1430         call_void_hook(sk_free_security, sk);
1431 }
1432
1433 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1434 {
1435         call_void_hook(sk_clone_security, sk, newsk);
1436 }
1437 EXPORT_SYMBOL(security_sk_clone);
1438
1439 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1440 {
1441         call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1442 }
1443 EXPORT_SYMBOL(security_sk_classify_flow);
1444
1445 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1446 {
1447         call_void_hook(req_classify_flow, req, fl);
1448 }
1449 EXPORT_SYMBOL(security_req_classify_flow);
1450
1451 void security_sock_graft(struct sock *sk, struct socket *parent)
1452 {
1453         call_void_hook(sock_graft, sk, parent);
1454 }
1455 EXPORT_SYMBOL(security_sock_graft);
1456
1457 int security_inet_conn_request(struct sock *sk,
1458                         struct sk_buff *skb, struct request_sock *req)
1459 {
1460         return call_int_hook(inet_conn_request, 0, sk, skb, req);
1461 }
1462 EXPORT_SYMBOL(security_inet_conn_request);
1463
1464 void security_inet_csk_clone(struct sock *newsk,
1465                         const struct request_sock *req)
1466 {
1467         call_void_hook(inet_csk_clone, newsk, req);
1468 }
1469
1470 void security_inet_conn_established(struct sock *sk,
1471                         struct sk_buff *skb)
1472 {
1473         call_void_hook(inet_conn_established, sk, skb);
1474 }
1475
1476 int security_secmark_relabel_packet(u32 secid)
1477 {
1478         return call_int_hook(secmark_relabel_packet, 0, secid);
1479 }
1480 EXPORT_SYMBOL(security_secmark_relabel_packet);
1481
1482 void security_secmark_refcount_inc(void)
1483 {
1484         call_void_hook(secmark_refcount_inc);
1485 }
1486 EXPORT_SYMBOL(security_secmark_refcount_inc);
1487
1488 void security_secmark_refcount_dec(void)
1489 {
1490         call_void_hook(secmark_refcount_dec);
1491 }
1492 EXPORT_SYMBOL(security_secmark_refcount_dec);
1493
1494 int security_tun_dev_alloc_security(void **security)
1495 {
1496         return call_int_hook(tun_dev_alloc_security, 0, security);
1497 }
1498 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1499
1500 void security_tun_dev_free_security(void *security)
1501 {
1502         call_void_hook(tun_dev_free_security, security);
1503 }
1504 EXPORT_SYMBOL(security_tun_dev_free_security);
1505
1506 int security_tun_dev_create(void)
1507 {
1508         return call_int_hook(tun_dev_create, 0);
1509 }
1510 EXPORT_SYMBOL(security_tun_dev_create);
1511
1512 int security_tun_dev_attach_queue(void *security)
1513 {
1514         return call_int_hook(tun_dev_attach_queue, 0, security);
1515 }
1516 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1517
1518 int security_tun_dev_attach(struct sock *sk, void *security)
1519 {
1520         return call_int_hook(tun_dev_attach, 0, sk, security);
1521 }
1522 EXPORT_SYMBOL(security_tun_dev_attach);
1523
1524 int security_tun_dev_open(void *security)
1525 {
1526         return call_int_hook(tun_dev_open, 0, security);
1527 }
1528 EXPORT_SYMBOL(security_tun_dev_open);
1529
1530 #endif  /* CONFIG_SECURITY_NETWORK */
1531
1532 #ifdef CONFIG_SECURITY_INFINIBAND
1533
1534 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1535 {
1536         return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
1537 }
1538 EXPORT_SYMBOL(security_ib_pkey_access);
1539
1540 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1541 {
1542         return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
1543 }
1544 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
1545
1546 int security_ib_alloc_security(void **sec)
1547 {
1548         return call_int_hook(ib_alloc_security, 0, sec);
1549 }
1550 EXPORT_SYMBOL(security_ib_alloc_security);
1551
1552 void security_ib_free_security(void *sec)
1553 {
1554         call_void_hook(ib_free_security, sec);
1555 }
1556 EXPORT_SYMBOL(security_ib_free_security);
1557 #endif  /* CONFIG_SECURITY_INFINIBAND */
1558
1559 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1560
1561 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1562                                struct xfrm_user_sec_ctx *sec_ctx,
1563                                gfp_t gfp)
1564 {
1565         return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1566 }
1567 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1568
1569 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1570                               struct xfrm_sec_ctx **new_ctxp)
1571 {
1572         return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1573 }
1574
1575 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1576 {
1577         call_void_hook(xfrm_policy_free_security, ctx);
1578 }
1579 EXPORT_SYMBOL(security_xfrm_policy_free);
1580
1581 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1582 {
1583         return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1584 }
1585
1586 int security_xfrm_state_alloc(struct xfrm_state *x,
1587                               struct xfrm_user_sec_ctx *sec_ctx)
1588 {
1589         return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1590 }
1591 EXPORT_SYMBOL(security_xfrm_state_alloc);
1592
1593 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1594                                       struct xfrm_sec_ctx *polsec, u32 secid)
1595 {
1596         return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1597 }
1598
1599 int security_xfrm_state_delete(struct xfrm_state *x)
1600 {
1601         return call_int_hook(xfrm_state_delete_security, 0, x);
1602 }
1603 EXPORT_SYMBOL(security_xfrm_state_delete);
1604
1605 void security_xfrm_state_free(struct xfrm_state *x)
1606 {
1607         call_void_hook(xfrm_state_free_security, x);
1608 }
1609
1610 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1611 {
1612         return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1613 }
1614
1615 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1616                                        struct xfrm_policy *xp,
1617                                        const struct flowi *fl)
1618 {
1619         struct security_hook_list *hp;
1620         int rc = 1;
1621
1622         /*
1623          * Since this function is expected to return 0 or 1, the judgment
1624          * becomes difficult if multiple LSMs supply this call. Fortunately,
1625          * we can use the first LSM's judgment because currently only SELinux
1626          * supplies this call.
1627          *
1628          * For speed optimization, we explicitly break the loop rather than
1629          * using the macro
1630          */
1631         list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1632                                 list) {
1633                 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1634                 break;
1635         }
1636         return rc;
1637 }
1638
1639 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1640 {
1641         return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1642 }
1643
1644 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1645 {
1646         int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1647                                 0);
1648
1649         BUG_ON(rc);
1650 }
1651 EXPORT_SYMBOL(security_skb_classify_flow);
1652
1653 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1654
1655 #ifdef CONFIG_KEYS
1656
1657 int security_key_alloc(struct key *key, const struct cred *cred,
1658                        unsigned long flags)
1659 {
1660         return call_int_hook(key_alloc, 0, key, cred, flags);
1661 }
1662
1663 void security_key_free(struct key *key)
1664 {
1665         call_void_hook(key_free, key);
1666 }
1667
1668 int security_key_permission(key_ref_t key_ref,
1669                             const struct cred *cred, unsigned perm)
1670 {
1671         return call_int_hook(key_permission, 0, key_ref, cred, perm);
1672 }
1673
1674 int security_key_getsecurity(struct key *key, char **_buffer)
1675 {
1676         *_buffer = NULL;
1677         return call_int_hook(key_getsecurity, 0, key, _buffer);
1678 }
1679
1680 #endif  /* CONFIG_KEYS */
1681
1682 #ifdef CONFIG_AUDIT
1683
1684 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1685 {
1686         return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1687 }
1688
1689 int security_audit_rule_known(struct audit_krule *krule)
1690 {
1691         return call_int_hook(audit_rule_known, 0, krule);
1692 }
1693
1694 void security_audit_rule_free(void *lsmrule)
1695 {
1696         call_void_hook(audit_rule_free, lsmrule);
1697 }
1698
1699 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1700                               struct audit_context *actx)
1701 {
1702         return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1703                                 actx);
1704 }
1705 #endif /* CONFIG_AUDIT */