Merge branch 'next-integrity' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorri...
[muen/linux.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/bpf.h>
16 #include <linux/capability.h>
17 #include <linux/dcache.h>
18 #include <linux/module.h>
19 #include <linux/init.h>
20 #include <linux/kernel.h>
21 #include <linux/lsm_hooks.h>
22 #include <linux/integrity.h>
23 #include <linux/ima.h>
24 #include <linux/evm.h>
25 #include <linux/fsnotify.h>
26 #include <linux/mman.h>
27 #include <linux/mount.h>
28 #include <linux/personality.h>
29 #include <linux/backing-dev.h>
30 #include <linux/string.h>
31 #include <net/flow.h>
32
33 #define MAX_LSM_EVM_XATTR       2
34
35 /* Maximum number of letters for an LSM name string */
36 #define SECURITY_NAME_MAX       10
37
38 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
39 static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain);
40
41 char *lsm_names;
42 /* Boot-time LSM user choice */
43 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
44         CONFIG_DEFAULT_SECURITY;
45
46 static void __init do_security_initcalls(void)
47 {
48         initcall_t *call;
49         call = __security_initcall_start;
50         while (call < __security_initcall_end) {
51                 (*call) ();
52                 call++;
53         }
54 }
55
56 /**
57  * security_init - initializes the security framework
58  *
59  * This should be called early in the kernel initialization sequence.
60  */
61 int __init security_init(void)
62 {
63         int i;
64         struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
65
66         for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
67              i++)
68                 INIT_HLIST_HEAD(&list[i]);
69         pr_info("Security Framework initialized\n");
70
71         /*
72          * Load minor LSMs, with the capability module always first.
73          */
74         capability_add_hooks();
75         yama_add_hooks();
76         loadpin_add_hooks();
77
78         /*
79          * Load all the remaining security modules.
80          */
81         do_security_initcalls();
82
83         return 0;
84 }
85
86 /* Save user chosen LSM */
87 static int __init choose_lsm(char *str)
88 {
89         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
90         return 1;
91 }
92 __setup("security=", choose_lsm);
93
94 static bool match_last_lsm(const char *list, const char *lsm)
95 {
96         const char *last;
97
98         if (WARN_ON(!list || !lsm))
99                 return false;
100         last = strrchr(list, ',');
101         if (last)
102                 /* Pass the comma, strcmp() will check for '\0' */
103                 last++;
104         else
105                 last = list;
106         return !strcmp(last, lsm);
107 }
108
109 static int lsm_append(char *new, char **result)
110 {
111         char *cp;
112
113         if (*result == NULL) {
114                 *result = kstrdup(new, GFP_KERNEL);
115         } else {
116                 /* Check if it is the last registered name */
117                 if (match_last_lsm(*result, new))
118                         return 0;
119                 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
120                 if (cp == NULL)
121                         return -ENOMEM;
122                 kfree(*result);
123                 *result = cp;
124         }
125         return 0;
126 }
127
128 /**
129  * security_module_enable - Load given security module on boot ?
130  * @module: the name of the module
131  *
132  * Each LSM must pass this method before registering its own operations
133  * to avoid security registration races. This method may also be used
134  * to check if your LSM is currently loaded during kernel initialization.
135  *
136  * Returns:
137  *
138  * true if:
139  *
140  * - The passed LSM is the one chosen by user at boot time,
141  * - or the passed LSM is configured as the default and the user did not
142  *   choose an alternate LSM at boot time.
143  *
144  * Otherwise, return false.
145  */
146 int __init security_module_enable(const char *module)
147 {
148         return !strcmp(module, chosen_lsm);
149 }
150
151 /**
152  * security_add_hooks - Add a modules hooks to the hook lists.
153  * @hooks: the hooks to add
154  * @count: the number of hooks to add
155  * @lsm: the name of the security module
156  *
157  * Each LSM has to register its hooks with the infrastructure.
158  */
159 void __init security_add_hooks(struct security_hook_list *hooks, int count,
160                                 char *lsm)
161 {
162         int i;
163
164         for (i = 0; i < count; i++) {
165                 hooks[i].lsm = lsm;
166                 hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
167         }
168         if (lsm_append(lsm, &lsm_names) < 0)
169                 panic("%s - Cannot get early memory.\n", __func__);
170 }
171
172 int call_lsm_notifier(enum lsm_event event, void *data)
173 {
174         return atomic_notifier_call_chain(&lsm_notifier_chain, event, data);
175 }
176 EXPORT_SYMBOL(call_lsm_notifier);
177
178 int register_lsm_notifier(struct notifier_block *nb)
179 {
180         return atomic_notifier_chain_register(&lsm_notifier_chain, nb);
181 }
182 EXPORT_SYMBOL(register_lsm_notifier);
183
184 int unregister_lsm_notifier(struct notifier_block *nb)
185 {
186         return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb);
187 }
188 EXPORT_SYMBOL(unregister_lsm_notifier);
189
190 /*
191  * Hook list operation macros.
192  *
193  * call_void_hook:
194  *      This is a hook that does not return a value.
195  *
196  * call_int_hook:
197  *      This is a hook that returns a value.
198  */
199
200 #define call_void_hook(FUNC, ...)                               \
201         do {                                                    \
202                 struct security_hook_list *P;                   \
203                                                                 \
204                 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
205                         P->hook.FUNC(__VA_ARGS__);              \
206         } while (0)
207
208 #define call_int_hook(FUNC, IRC, ...) ({                        \
209         int RC = IRC;                                           \
210         do {                                                    \
211                 struct security_hook_list *P;                   \
212                                                                 \
213                 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
214                         RC = P->hook.FUNC(__VA_ARGS__);         \
215                         if (RC != 0)                            \
216                                 break;                          \
217                 }                                               \
218         } while (0);                                            \
219         RC;                                                     \
220 })
221
222 /* Security operations */
223
224 int security_binder_set_context_mgr(struct task_struct *mgr)
225 {
226         return call_int_hook(binder_set_context_mgr, 0, mgr);
227 }
228
229 int security_binder_transaction(struct task_struct *from,
230                                 struct task_struct *to)
231 {
232         return call_int_hook(binder_transaction, 0, from, to);
233 }
234
235 int security_binder_transfer_binder(struct task_struct *from,
236                                     struct task_struct *to)
237 {
238         return call_int_hook(binder_transfer_binder, 0, from, to);
239 }
240
241 int security_binder_transfer_file(struct task_struct *from,
242                                   struct task_struct *to, struct file *file)
243 {
244         return call_int_hook(binder_transfer_file, 0, from, to, file);
245 }
246
247 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
248 {
249         return call_int_hook(ptrace_access_check, 0, child, mode);
250 }
251
252 int security_ptrace_traceme(struct task_struct *parent)
253 {
254         return call_int_hook(ptrace_traceme, 0, parent);
255 }
256
257 int security_capget(struct task_struct *target,
258                      kernel_cap_t *effective,
259                      kernel_cap_t *inheritable,
260                      kernel_cap_t *permitted)
261 {
262         return call_int_hook(capget, 0, target,
263                                 effective, inheritable, permitted);
264 }
265
266 int security_capset(struct cred *new, const struct cred *old,
267                     const kernel_cap_t *effective,
268                     const kernel_cap_t *inheritable,
269                     const kernel_cap_t *permitted)
270 {
271         return call_int_hook(capset, 0, new, old,
272                                 effective, inheritable, permitted);
273 }
274
275 int security_capable(const struct cred *cred, struct user_namespace *ns,
276                      int cap)
277 {
278         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
279 }
280
281 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
282                              int cap)
283 {
284         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
285 }
286
287 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
288 {
289         return call_int_hook(quotactl, 0, cmds, type, id, sb);
290 }
291
292 int security_quota_on(struct dentry *dentry)
293 {
294         return call_int_hook(quota_on, 0, dentry);
295 }
296
297 int security_syslog(int type)
298 {
299         return call_int_hook(syslog, 0, type);
300 }
301
302 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
303 {
304         return call_int_hook(settime, 0, ts, tz);
305 }
306
307 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
308 {
309         struct security_hook_list *hp;
310         int cap_sys_admin = 1;
311         int rc;
312
313         /*
314          * The module will respond with a positive value if
315          * it thinks the __vm_enough_memory() call should be
316          * made with the cap_sys_admin set. If all of the modules
317          * agree that it should be set it will. If any module
318          * thinks it should not be set it won't.
319          */
320         hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
321                 rc = hp->hook.vm_enough_memory(mm, pages);
322                 if (rc <= 0) {
323                         cap_sys_admin = 0;
324                         break;
325                 }
326         }
327         return __vm_enough_memory(mm, pages, cap_sys_admin);
328 }
329
330 int security_bprm_set_creds(struct linux_binprm *bprm)
331 {
332         return call_int_hook(bprm_set_creds, 0, bprm);
333 }
334
335 int security_bprm_check(struct linux_binprm *bprm)
336 {
337         int ret;
338
339         ret = call_int_hook(bprm_check_security, 0, bprm);
340         if (ret)
341                 return ret;
342         return ima_bprm_check(bprm);
343 }
344
345 void security_bprm_committing_creds(struct linux_binprm *bprm)
346 {
347         call_void_hook(bprm_committing_creds, bprm);
348 }
349
350 void security_bprm_committed_creds(struct linux_binprm *bprm)
351 {
352         call_void_hook(bprm_committed_creds, bprm);
353 }
354
355 int security_sb_alloc(struct super_block *sb)
356 {
357         return call_int_hook(sb_alloc_security, 0, sb);
358 }
359
360 void security_sb_free(struct super_block *sb)
361 {
362         call_void_hook(sb_free_security, sb);
363 }
364
365 int security_sb_copy_data(char *orig, char *copy)
366 {
367         return call_int_hook(sb_copy_data, 0, orig, copy);
368 }
369 EXPORT_SYMBOL(security_sb_copy_data);
370
371 int security_sb_remount(struct super_block *sb, void *data)
372 {
373         return call_int_hook(sb_remount, 0, sb, data);
374 }
375
376 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
377 {
378         return call_int_hook(sb_kern_mount, 0, sb, flags, data);
379 }
380
381 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
382 {
383         return call_int_hook(sb_show_options, 0, m, sb);
384 }
385
386 int security_sb_statfs(struct dentry *dentry)
387 {
388         return call_int_hook(sb_statfs, 0, dentry);
389 }
390
391 int security_sb_mount(const char *dev_name, const struct path *path,
392                        const char *type, unsigned long flags, void *data)
393 {
394         return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
395 }
396
397 int security_sb_umount(struct vfsmount *mnt, int flags)
398 {
399         return call_int_hook(sb_umount, 0, mnt, flags);
400 }
401
402 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
403 {
404         return call_int_hook(sb_pivotroot, 0, old_path, new_path);
405 }
406
407 int security_sb_set_mnt_opts(struct super_block *sb,
408                                 struct security_mnt_opts *opts,
409                                 unsigned long kern_flags,
410                                 unsigned long *set_kern_flags)
411 {
412         return call_int_hook(sb_set_mnt_opts,
413                                 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
414                                 opts, kern_flags, set_kern_flags);
415 }
416 EXPORT_SYMBOL(security_sb_set_mnt_opts);
417
418 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
419                                 struct super_block *newsb,
420                                 unsigned long kern_flags,
421                                 unsigned long *set_kern_flags)
422 {
423         return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
424                                 kern_flags, set_kern_flags);
425 }
426 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
427
428 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
429 {
430         return call_int_hook(sb_parse_opts_str, 0, options, opts);
431 }
432 EXPORT_SYMBOL(security_sb_parse_opts_str);
433
434 int security_inode_alloc(struct inode *inode)
435 {
436         inode->i_security = NULL;
437         return call_int_hook(inode_alloc_security, 0, inode);
438 }
439
440 void security_inode_free(struct inode *inode)
441 {
442         integrity_inode_free(inode);
443         call_void_hook(inode_free_security, inode);
444 }
445
446 int security_dentry_init_security(struct dentry *dentry, int mode,
447                                         const struct qstr *name, void **ctx,
448                                         u32 *ctxlen)
449 {
450         return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
451                                 name, ctx, ctxlen);
452 }
453 EXPORT_SYMBOL(security_dentry_init_security);
454
455 int security_dentry_create_files_as(struct dentry *dentry, int mode,
456                                     struct qstr *name,
457                                     const struct cred *old, struct cred *new)
458 {
459         return call_int_hook(dentry_create_files_as, 0, dentry, mode,
460                                 name, old, new);
461 }
462 EXPORT_SYMBOL(security_dentry_create_files_as);
463
464 int security_inode_init_security(struct inode *inode, struct inode *dir,
465                                  const struct qstr *qstr,
466                                  const initxattrs initxattrs, void *fs_data)
467 {
468         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
469         struct xattr *lsm_xattr, *evm_xattr, *xattr;
470         int ret;
471
472         if (unlikely(IS_PRIVATE(inode)))
473                 return 0;
474
475         if (!initxattrs)
476                 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
477                                      dir, qstr, NULL, NULL, NULL);
478         memset(new_xattrs, 0, sizeof(new_xattrs));
479         lsm_xattr = new_xattrs;
480         ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
481                                                 &lsm_xattr->name,
482                                                 &lsm_xattr->value,
483                                                 &lsm_xattr->value_len);
484         if (ret)
485                 goto out;
486
487         evm_xattr = lsm_xattr + 1;
488         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
489         if (ret)
490                 goto out;
491         ret = initxattrs(inode, new_xattrs, fs_data);
492 out:
493         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
494                 kfree(xattr->value);
495         return (ret == -EOPNOTSUPP) ? 0 : ret;
496 }
497 EXPORT_SYMBOL(security_inode_init_security);
498
499 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
500                                      const struct qstr *qstr, const char **name,
501                                      void **value, size_t *len)
502 {
503         if (unlikely(IS_PRIVATE(inode)))
504                 return -EOPNOTSUPP;
505         return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
506                              qstr, name, value, len);
507 }
508 EXPORT_SYMBOL(security_old_inode_init_security);
509
510 #ifdef CONFIG_SECURITY_PATH
511 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
512                         unsigned int dev)
513 {
514         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
515                 return 0;
516         return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
517 }
518 EXPORT_SYMBOL(security_path_mknod);
519
520 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
521 {
522         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
523                 return 0;
524         return call_int_hook(path_mkdir, 0, dir, dentry, mode);
525 }
526 EXPORT_SYMBOL(security_path_mkdir);
527
528 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
529 {
530         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
531                 return 0;
532         return call_int_hook(path_rmdir, 0, dir, dentry);
533 }
534
535 int security_path_unlink(const struct path *dir, struct dentry *dentry)
536 {
537         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
538                 return 0;
539         return call_int_hook(path_unlink, 0, dir, dentry);
540 }
541 EXPORT_SYMBOL(security_path_unlink);
542
543 int security_path_symlink(const struct path *dir, struct dentry *dentry,
544                           const char *old_name)
545 {
546         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
547                 return 0;
548         return call_int_hook(path_symlink, 0, dir, dentry, old_name);
549 }
550
551 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
552                        struct dentry *new_dentry)
553 {
554         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
555                 return 0;
556         return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
557 }
558
559 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
560                          const struct path *new_dir, struct dentry *new_dentry,
561                          unsigned int flags)
562 {
563         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
564                      (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
565                 return 0;
566
567         if (flags & RENAME_EXCHANGE) {
568                 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
569                                         old_dir, old_dentry);
570                 if (err)
571                         return err;
572         }
573
574         return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
575                                 new_dentry);
576 }
577 EXPORT_SYMBOL(security_path_rename);
578
579 int security_path_truncate(const struct path *path)
580 {
581         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
582                 return 0;
583         return call_int_hook(path_truncate, 0, path);
584 }
585
586 int security_path_chmod(const struct path *path, umode_t mode)
587 {
588         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
589                 return 0;
590         return call_int_hook(path_chmod, 0, path, mode);
591 }
592
593 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
594 {
595         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
596                 return 0;
597         return call_int_hook(path_chown, 0, path, uid, gid);
598 }
599
600 int security_path_chroot(const struct path *path)
601 {
602         return call_int_hook(path_chroot, 0, path);
603 }
604 #endif
605
606 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
607 {
608         if (unlikely(IS_PRIVATE(dir)))
609                 return 0;
610         return call_int_hook(inode_create, 0, dir, dentry, mode);
611 }
612 EXPORT_SYMBOL_GPL(security_inode_create);
613
614 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
615                          struct dentry *new_dentry)
616 {
617         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
618                 return 0;
619         return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
620 }
621
622 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
623 {
624         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
625                 return 0;
626         return call_int_hook(inode_unlink, 0, dir, dentry);
627 }
628
629 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
630                             const char *old_name)
631 {
632         if (unlikely(IS_PRIVATE(dir)))
633                 return 0;
634         return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
635 }
636
637 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
638 {
639         if (unlikely(IS_PRIVATE(dir)))
640                 return 0;
641         return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
642 }
643 EXPORT_SYMBOL_GPL(security_inode_mkdir);
644
645 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
646 {
647         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
648                 return 0;
649         return call_int_hook(inode_rmdir, 0, dir, dentry);
650 }
651
652 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
653 {
654         if (unlikely(IS_PRIVATE(dir)))
655                 return 0;
656         return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
657 }
658
659 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
660                            struct inode *new_dir, struct dentry *new_dentry,
661                            unsigned int flags)
662 {
663         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
664             (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
665                 return 0;
666
667         if (flags & RENAME_EXCHANGE) {
668                 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
669                                                      old_dir, old_dentry);
670                 if (err)
671                         return err;
672         }
673
674         return call_int_hook(inode_rename, 0, old_dir, old_dentry,
675                                            new_dir, new_dentry);
676 }
677
678 int security_inode_readlink(struct dentry *dentry)
679 {
680         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
681                 return 0;
682         return call_int_hook(inode_readlink, 0, dentry);
683 }
684
685 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
686                                bool rcu)
687 {
688         if (unlikely(IS_PRIVATE(inode)))
689                 return 0;
690         return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
691 }
692
693 int security_inode_permission(struct inode *inode, int mask)
694 {
695         if (unlikely(IS_PRIVATE(inode)))
696                 return 0;
697         return call_int_hook(inode_permission, 0, inode, mask);
698 }
699
700 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
701 {
702         int ret;
703
704         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
705                 return 0;
706         ret = call_int_hook(inode_setattr, 0, dentry, attr);
707         if (ret)
708                 return ret;
709         return evm_inode_setattr(dentry, attr);
710 }
711 EXPORT_SYMBOL_GPL(security_inode_setattr);
712
713 int security_inode_getattr(const struct path *path)
714 {
715         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
716                 return 0;
717         return call_int_hook(inode_getattr, 0, path);
718 }
719
720 int security_inode_setxattr(struct dentry *dentry, const char *name,
721                             const void *value, size_t size, int flags)
722 {
723         int ret;
724
725         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
726                 return 0;
727         /*
728          * SELinux and Smack integrate the cap call,
729          * so assume that all LSMs supplying this call do so.
730          */
731         ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
732                                 flags);
733
734         if (ret == 1)
735                 ret = cap_inode_setxattr(dentry, name, value, size, flags);
736         if (ret)
737                 return ret;
738         ret = ima_inode_setxattr(dentry, name, value, size);
739         if (ret)
740                 return ret;
741         return evm_inode_setxattr(dentry, name, value, size);
742 }
743
744 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
745                                   const void *value, size_t size, int flags)
746 {
747         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
748                 return;
749         call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
750         evm_inode_post_setxattr(dentry, name, value, size);
751 }
752
753 int security_inode_getxattr(struct dentry *dentry, const char *name)
754 {
755         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
756                 return 0;
757         return call_int_hook(inode_getxattr, 0, dentry, name);
758 }
759
760 int security_inode_listxattr(struct dentry *dentry)
761 {
762         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
763                 return 0;
764         return call_int_hook(inode_listxattr, 0, dentry);
765 }
766
767 int security_inode_removexattr(struct dentry *dentry, const char *name)
768 {
769         int ret;
770
771         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
772                 return 0;
773         /*
774          * SELinux and Smack integrate the cap call,
775          * so assume that all LSMs supplying this call do so.
776          */
777         ret = call_int_hook(inode_removexattr, 1, dentry, name);
778         if (ret == 1)
779                 ret = cap_inode_removexattr(dentry, name);
780         if (ret)
781                 return ret;
782         ret = ima_inode_removexattr(dentry, name);
783         if (ret)
784                 return ret;
785         return evm_inode_removexattr(dentry, name);
786 }
787
788 int security_inode_need_killpriv(struct dentry *dentry)
789 {
790         return call_int_hook(inode_need_killpriv, 0, dentry);
791 }
792
793 int security_inode_killpriv(struct dentry *dentry)
794 {
795         return call_int_hook(inode_killpriv, 0, dentry);
796 }
797
798 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
799 {
800         struct security_hook_list *hp;
801         int rc;
802
803         if (unlikely(IS_PRIVATE(inode)))
804                 return -EOPNOTSUPP;
805         /*
806          * Only one module will provide an attribute with a given name.
807          */
808         hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
809                 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
810                 if (rc != -EOPNOTSUPP)
811                         return rc;
812         }
813         return -EOPNOTSUPP;
814 }
815
816 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
817 {
818         struct security_hook_list *hp;
819         int rc;
820
821         if (unlikely(IS_PRIVATE(inode)))
822                 return -EOPNOTSUPP;
823         /*
824          * Only one module will provide an attribute with a given name.
825          */
826         hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
827                 rc = hp->hook.inode_setsecurity(inode, name, value, size,
828                                                                 flags);
829                 if (rc != -EOPNOTSUPP)
830                         return rc;
831         }
832         return -EOPNOTSUPP;
833 }
834
835 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
836 {
837         if (unlikely(IS_PRIVATE(inode)))
838                 return 0;
839         return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
840 }
841 EXPORT_SYMBOL(security_inode_listsecurity);
842
843 void security_inode_getsecid(struct inode *inode, u32 *secid)
844 {
845         call_void_hook(inode_getsecid, inode, secid);
846 }
847
848 int security_inode_copy_up(struct dentry *src, struct cred **new)
849 {
850         return call_int_hook(inode_copy_up, 0, src, new);
851 }
852 EXPORT_SYMBOL(security_inode_copy_up);
853
854 int security_inode_copy_up_xattr(const char *name)
855 {
856         return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
857 }
858 EXPORT_SYMBOL(security_inode_copy_up_xattr);
859
860 int security_file_permission(struct file *file, int mask)
861 {
862         int ret;
863
864         ret = call_int_hook(file_permission, 0, file, mask);
865         if (ret)
866                 return ret;
867
868         return fsnotify_perm(file, mask);
869 }
870
871 int security_file_alloc(struct file *file)
872 {
873         return call_int_hook(file_alloc_security, 0, file);
874 }
875
876 void security_file_free(struct file *file)
877 {
878         call_void_hook(file_free_security, file);
879 }
880
881 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
882 {
883         return call_int_hook(file_ioctl, 0, file, cmd, arg);
884 }
885
886 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
887 {
888         /*
889          * Does we have PROT_READ and does the application expect
890          * it to imply PROT_EXEC?  If not, nothing to talk about...
891          */
892         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
893                 return prot;
894         if (!(current->personality & READ_IMPLIES_EXEC))
895                 return prot;
896         /*
897          * if that's an anonymous mapping, let it.
898          */
899         if (!file)
900                 return prot | PROT_EXEC;
901         /*
902          * ditto if it's not on noexec mount, except that on !MMU we need
903          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
904          */
905         if (!path_noexec(&file->f_path)) {
906 #ifndef CONFIG_MMU
907                 if (file->f_op->mmap_capabilities) {
908                         unsigned caps = file->f_op->mmap_capabilities(file);
909                         if (!(caps & NOMMU_MAP_EXEC))
910                                 return prot;
911                 }
912 #endif
913                 return prot | PROT_EXEC;
914         }
915         /* anything on noexec mount won't get PROT_EXEC */
916         return prot;
917 }
918
919 int security_mmap_file(struct file *file, unsigned long prot,
920                         unsigned long flags)
921 {
922         int ret;
923         ret = call_int_hook(mmap_file, 0, file, prot,
924                                         mmap_prot(file, prot), flags);
925         if (ret)
926                 return ret;
927         return ima_file_mmap(file, prot);
928 }
929
930 int security_mmap_addr(unsigned long addr)
931 {
932         return call_int_hook(mmap_addr, 0, addr);
933 }
934
935 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
936                             unsigned long prot)
937 {
938         return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
939 }
940
941 int security_file_lock(struct file *file, unsigned int cmd)
942 {
943         return call_int_hook(file_lock, 0, file, cmd);
944 }
945
946 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
947 {
948         return call_int_hook(file_fcntl, 0, file, cmd, arg);
949 }
950
951 void security_file_set_fowner(struct file *file)
952 {
953         call_void_hook(file_set_fowner, file);
954 }
955
956 int security_file_send_sigiotask(struct task_struct *tsk,
957                                   struct fown_struct *fown, int sig)
958 {
959         return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
960 }
961
962 int security_file_receive(struct file *file)
963 {
964         return call_int_hook(file_receive, 0, file);
965 }
966
967 int security_file_open(struct file *file, const struct cred *cred)
968 {
969         int ret;
970
971         ret = call_int_hook(file_open, 0, file, cred);
972         if (ret)
973                 return ret;
974
975         return fsnotify_perm(file, MAY_OPEN);
976 }
977
978 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
979 {
980         return call_int_hook(task_alloc, 0, task, clone_flags);
981 }
982
983 void security_task_free(struct task_struct *task)
984 {
985         call_void_hook(task_free, task);
986 }
987
988 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
989 {
990         return call_int_hook(cred_alloc_blank, 0, cred, gfp);
991 }
992
993 void security_cred_free(struct cred *cred)
994 {
995         call_void_hook(cred_free, cred);
996 }
997
998 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
999 {
1000         return call_int_hook(cred_prepare, 0, new, old, gfp);
1001 }
1002
1003 void security_transfer_creds(struct cred *new, const struct cred *old)
1004 {
1005         call_void_hook(cred_transfer, new, old);
1006 }
1007
1008 void security_cred_getsecid(const struct cred *c, u32 *secid)
1009 {
1010         *secid = 0;
1011         call_void_hook(cred_getsecid, c, secid);
1012 }
1013 EXPORT_SYMBOL(security_cred_getsecid);
1014
1015 int security_kernel_act_as(struct cred *new, u32 secid)
1016 {
1017         return call_int_hook(kernel_act_as, 0, new, secid);
1018 }
1019
1020 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1021 {
1022         return call_int_hook(kernel_create_files_as, 0, new, inode);
1023 }
1024
1025 int security_kernel_module_request(char *kmod_name)
1026 {
1027         return call_int_hook(kernel_module_request, 0, kmod_name);
1028 }
1029
1030 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1031 {
1032         int ret;
1033
1034         ret = call_int_hook(kernel_read_file, 0, file, id);
1035         if (ret)
1036                 return ret;
1037         return ima_read_file(file, id);
1038 }
1039 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1040
1041 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1042                                    enum kernel_read_file_id id)
1043 {
1044         int ret;
1045
1046         ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1047         if (ret)
1048                 return ret;
1049         return ima_post_read_file(file, buf, size, id);
1050 }
1051 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1052
1053 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1054                              int flags)
1055 {
1056         return call_int_hook(task_fix_setuid, 0, new, old, flags);
1057 }
1058
1059 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1060 {
1061         return call_int_hook(task_setpgid, 0, p, pgid);
1062 }
1063
1064 int security_task_getpgid(struct task_struct *p)
1065 {
1066         return call_int_hook(task_getpgid, 0, p);
1067 }
1068
1069 int security_task_getsid(struct task_struct *p)
1070 {
1071         return call_int_hook(task_getsid, 0, p);
1072 }
1073
1074 void security_task_getsecid(struct task_struct *p, u32 *secid)
1075 {
1076         *secid = 0;
1077         call_void_hook(task_getsecid, p, secid);
1078 }
1079 EXPORT_SYMBOL(security_task_getsecid);
1080
1081 int security_task_setnice(struct task_struct *p, int nice)
1082 {
1083         return call_int_hook(task_setnice, 0, p, nice);
1084 }
1085
1086 int security_task_setioprio(struct task_struct *p, int ioprio)
1087 {
1088         return call_int_hook(task_setioprio, 0, p, ioprio);
1089 }
1090
1091 int security_task_getioprio(struct task_struct *p)
1092 {
1093         return call_int_hook(task_getioprio, 0, p);
1094 }
1095
1096 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1097                           unsigned int flags)
1098 {
1099         return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1100 }
1101
1102 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1103                 struct rlimit *new_rlim)
1104 {
1105         return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1106 }
1107
1108 int security_task_setscheduler(struct task_struct *p)
1109 {
1110         return call_int_hook(task_setscheduler, 0, p);
1111 }
1112
1113 int security_task_getscheduler(struct task_struct *p)
1114 {
1115         return call_int_hook(task_getscheduler, 0, p);
1116 }
1117
1118 int security_task_movememory(struct task_struct *p)
1119 {
1120         return call_int_hook(task_movememory, 0, p);
1121 }
1122
1123 int security_task_kill(struct task_struct *p, struct siginfo *info,
1124                         int sig, const struct cred *cred)
1125 {
1126         return call_int_hook(task_kill, 0, p, info, sig, cred);
1127 }
1128
1129 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1130                          unsigned long arg4, unsigned long arg5)
1131 {
1132         int thisrc;
1133         int rc = -ENOSYS;
1134         struct security_hook_list *hp;
1135
1136         hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1137                 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1138                 if (thisrc != -ENOSYS) {
1139                         rc = thisrc;
1140                         if (thisrc != 0)
1141                                 break;
1142                 }
1143         }
1144         return rc;
1145 }
1146
1147 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1148 {
1149         call_void_hook(task_to_inode, p, inode);
1150 }
1151
1152 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1153 {
1154         return call_int_hook(ipc_permission, 0, ipcp, flag);
1155 }
1156
1157 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1158 {
1159         *secid = 0;
1160         call_void_hook(ipc_getsecid, ipcp, secid);
1161 }
1162
1163 int security_msg_msg_alloc(struct msg_msg *msg)
1164 {
1165         return call_int_hook(msg_msg_alloc_security, 0, msg);
1166 }
1167
1168 void security_msg_msg_free(struct msg_msg *msg)
1169 {
1170         call_void_hook(msg_msg_free_security, msg);
1171 }
1172
1173 int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1174 {
1175         return call_int_hook(msg_queue_alloc_security, 0, msq);
1176 }
1177
1178 void security_msg_queue_free(struct kern_ipc_perm *msq)
1179 {
1180         call_void_hook(msg_queue_free_security, msq);
1181 }
1182
1183 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1184 {
1185         return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1186 }
1187
1188 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1189 {
1190         return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1191 }
1192
1193 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1194                                struct msg_msg *msg, int msqflg)
1195 {
1196         return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1197 }
1198
1199 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1200                                struct task_struct *target, long type, int mode)
1201 {
1202         return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1203 }
1204
1205 int security_shm_alloc(struct kern_ipc_perm *shp)
1206 {
1207         return call_int_hook(shm_alloc_security, 0, shp);
1208 }
1209
1210 void security_shm_free(struct kern_ipc_perm *shp)
1211 {
1212         call_void_hook(shm_free_security, shp);
1213 }
1214
1215 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
1216 {
1217         return call_int_hook(shm_associate, 0, shp, shmflg);
1218 }
1219
1220 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1221 {
1222         return call_int_hook(shm_shmctl, 0, shp, cmd);
1223 }
1224
1225 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
1226 {
1227         return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1228 }
1229
1230 int security_sem_alloc(struct kern_ipc_perm *sma)
1231 {
1232         return call_int_hook(sem_alloc_security, 0, sma);
1233 }
1234
1235 void security_sem_free(struct kern_ipc_perm *sma)
1236 {
1237         call_void_hook(sem_free_security, sma);
1238 }
1239
1240 int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1241 {
1242         return call_int_hook(sem_associate, 0, sma, semflg);
1243 }
1244
1245 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1246 {
1247         return call_int_hook(sem_semctl, 0, sma, cmd);
1248 }
1249
1250 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
1251                         unsigned nsops, int alter)
1252 {
1253         return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1254 }
1255
1256 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1257 {
1258         if (unlikely(inode && IS_PRIVATE(inode)))
1259                 return;
1260         call_void_hook(d_instantiate, dentry, inode);
1261 }
1262 EXPORT_SYMBOL(security_d_instantiate);
1263
1264 int security_getprocattr(struct task_struct *p, char *name, char **value)
1265 {
1266         return call_int_hook(getprocattr, -EINVAL, p, name, value);
1267 }
1268
1269 int security_setprocattr(const char *name, void *value, size_t size)
1270 {
1271         return call_int_hook(setprocattr, -EINVAL, name, value, size);
1272 }
1273
1274 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1275 {
1276         return call_int_hook(netlink_send, 0, sk, skb);
1277 }
1278
1279 int security_ismaclabel(const char *name)
1280 {
1281         return call_int_hook(ismaclabel, 0, name);
1282 }
1283 EXPORT_SYMBOL(security_ismaclabel);
1284
1285 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1286 {
1287         return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1288                                 seclen);
1289 }
1290 EXPORT_SYMBOL(security_secid_to_secctx);
1291
1292 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1293 {
1294         *secid = 0;
1295         return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1296 }
1297 EXPORT_SYMBOL(security_secctx_to_secid);
1298
1299 void security_release_secctx(char *secdata, u32 seclen)
1300 {
1301         call_void_hook(release_secctx, secdata, seclen);
1302 }
1303 EXPORT_SYMBOL(security_release_secctx);
1304
1305 void security_inode_invalidate_secctx(struct inode *inode)
1306 {
1307         call_void_hook(inode_invalidate_secctx, inode);
1308 }
1309 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1310
1311 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1312 {
1313         return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1314 }
1315 EXPORT_SYMBOL(security_inode_notifysecctx);
1316
1317 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1318 {
1319         return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1320 }
1321 EXPORT_SYMBOL(security_inode_setsecctx);
1322
1323 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1324 {
1325         return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1326 }
1327 EXPORT_SYMBOL(security_inode_getsecctx);
1328
1329 #ifdef CONFIG_SECURITY_NETWORK
1330
1331 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1332 {
1333         return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1334 }
1335 EXPORT_SYMBOL(security_unix_stream_connect);
1336
1337 int security_unix_may_send(struct socket *sock,  struct socket *other)
1338 {
1339         return call_int_hook(unix_may_send, 0, sock, other);
1340 }
1341 EXPORT_SYMBOL(security_unix_may_send);
1342
1343 int security_socket_create(int family, int type, int protocol, int kern)
1344 {
1345         return call_int_hook(socket_create, 0, family, type, protocol, kern);
1346 }
1347
1348 int security_socket_post_create(struct socket *sock, int family,
1349                                 int type, int protocol, int kern)
1350 {
1351         return call_int_hook(socket_post_create, 0, sock, family, type,
1352                                                 protocol, kern);
1353 }
1354
1355 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1356 {
1357         return call_int_hook(socket_bind, 0, sock, address, addrlen);
1358 }
1359
1360 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1361 {
1362         return call_int_hook(socket_connect, 0, sock, address, addrlen);
1363 }
1364
1365 int security_socket_listen(struct socket *sock, int backlog)
1366 {
1367         return call_int_hook(socket_listen, 0, sock, backlog);
1368 }
1369
1370 int security_socket_accept(struct socket *sock, struct socket *newsock)
1371 {
1372         return call_int_hook(socket_accept, 0, sock, newsock);
1373 }
1374
1375 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1376 {
1377         return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1378 }
1379
1380 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1381                             int size, int flags)
1382 {
1383         return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1384 }
1385
1386 int security_socket_getsockname(struct socket *sock)
1387 {
1388         return call_int_hook(socket_getsockname, 0, sock);
1389 }
1390
1391 int security_socket_getpeername(struct socket *sock)
1392 {
1393         return call_int_hook(socket_getpeername, 0, sock);
1394 }
1395
1396 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1397 {
1398         return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1399 }
1400
1401 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1402 {
1403         return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1404 }
1405
1406 int security_socket_shutdown(struct socket *sock, int how)
1407 {
1408         return call_int_hook(socket_shutdown, 0, sock, how);
1409 }
1410
1411 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1412 {
1413         return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1414 }
1415 EXPORT_SYMBOL(security_sock_rcv_skb);
1416
1417 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1418                                       int __user *optlen, unsigned len)
1419 {
1420         return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1421                                 optval, optlen, len);
1422 }
1423
1424 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1425 {
1426         return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1427                              skb, secid);
1428 }
1429 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1430
1431 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1432 {
1433         return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1434 }
1435
1436 void security_sk_free(struct sock *sk)
1437 {
1438         call_void_hook(sk_free_security, sk);
1439 }
1440
1441 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1442 {
1443         call_void_hook(sk_clone_security, sk, newsk);
1444 }
1445 EXPORT_SYMBOL(security_sk_clone);
1446
1447 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1448 {
1449         call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1450 }
1451 EXPORT_SYMBOL(security_sk_classify_flow);
1452
1453 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1454 {
1455         call_void_hook(req_classify_flow, req, fl);
1456 }
1457 EXPORT_SYMBOL(security_req_classify_flow);
1458
1459 void security_sock_graft(struct sock *sk, struct socket *parent)
1460 {
1461         call_void_hook(sock_graft, sk, parent);
1462 }
1463 EXPORT_SYMBOL(security_sock_graft);
1464
1465 int security_inet_conn_request(struct sock *sk,
1466                         struct sk_buff *skb, struct request_sock *req)
1467 {
1468         return call_int_hook(inet_conn_request, 0, sk, skb, req);
1469 }
1470 EXPORT_SYMBOL(security_inet_conn_request);
1471
1472 void security_inet_csk_clone(struct sock *newsk,
1473                         const struct request_sock *req)
1474 {
1475         call_void_hook(inet_csk_clone, newsk, req);
1476 }
1477
1478 void security_inet_conn_established(struct sock *sk,
1479                         struct sk_buff *skb)
1480 {
1481         call_void_hook(inet_conn_established, sk, skb);
1482 }
1483 EXPORT_SYMBOL(security_inet_conn_established);
1484
1485 int security_secmark_relabel_packet(u32 secid)
1486 {
1487         return call_int_hook(secmark_relabel_packet, 0, secid);
1488 }
1489 EXPORT_SYMBOL(security_secmark_relabel_packet);
1490
1491 void security_secmark_refcount_inc(void)
1492 {
1493         call_void_hook(secmark_refcount_inc);
1494 }
1495 EXPORT_SYMBOL(security_secmark_refcount_inc);
1496
1497 void security_secmark_refcount_dec(void)
1498 {
1499         call_void_hook(secmark_refcount_dec);
1500 }
1501 EXPORT_SYMBOL(security_secmark_refcount_dec);
1502
1503 int security_tun_dev_alloc_security(void **security)
1504 {
1505         return call_int_hook(tun_dev_alloc_security, 0, security);
1506 }
1507 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1508
1509 void security_tun_dev_free_security(void *security)
1510 {
1511         call_void_hook(tun_dev_free_security, security);
1512 }
1513 EXPORT_SYMBOL(security_tun_dev_free_security);
1514
1515 int security_tun_dev_create(void)
1516 {
1517         return call_int_hook(tun_dev_create, 0);
1518 }
1519 EXPORT_SYMBOL(security_tun_dev_create);
1520
1521 int security_tun_dev_attach_queue(void *security)
1522 {
1523         return call_int_hook(tun_dev_attach_queue, 0, security);
1524 }
1525 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1526
1527 int security_tun_dev_attach(struct sock *sk, void *security)
1528 {
1529         return call_int_hook(tun_dev_attach, 0, sk, security);
1530 }
1531 EXPORT_SYMBOL(security_tun_dev_attach);
1532
1533 int security_tun_dev_open(void *security)
1534 {
1535         return call_int_hook(tun_dev_open, 0, security);
1536 }
1537 EXPORT_SYMBOL(security_tun_dev_open);
1538
1539 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb)
1540 {
1541         return call_int_hook(sctp_assoc_request, 0, ep, skb);
1542 }
1543 EXPORT_SYMBOL(security_sctp_assoc_request);
1544
1545 int security_sctp_bind_connect(struct sock *sk, int optname,
1546                                struct sockaddr *address, int addrlen)
1547 {
1548         return call_int_hook(sctp_bind_connect, 0, sk, optname,
1549                              address, addrlen);
1550 }
1551 EXPORT_SYMBOL(security_sctp_bind_connect);
1552
1553 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1554                             struct sock *newsk)
1555 {
1556         call_void_hook(sctp_sk_clone, ep, sk, newsk);
1557 }
1558 EXPORT_SYMBOL(security_sctp_sk_clone);
1559
1560 #endif  /* CONFIG_SECURITY_NETWORK */
1561
1562 #ifdef CONFIG_SECURITY_INFINIBAND
1563
1564 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1565 {
1566         return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
1567 }
1568 EXPORT_SYMBOL(security_ib_pkey_access);
1569
1570 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1571 {
1572         return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
1573 }
1574 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
1575
1576 int security_ib_alloc_security(void **sec)
1577 {
1578         return call_int_hook(ib_alloc_security, 0, sec);
1579 }
1580 EXPORT_SYMBOL(security_ib_alloc_security);
1581
1582 void security_ib_free_security(void *sec)
1583 {
1584         call_void_hook(ib_free_security, sec);
1585 }
1586 EXPORT_SYMBOL(security_ib_free_security);
1587 #endif  /* CONFIG_SECURITY_INFINIBAND */
1588
1589 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1590
1591 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1592                                struct xfrm_user_sec_ctx *sec_ctx,
1593                                gfp_t gfp)
1594 {
1595         return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1596 }
1597 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1598
1599 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1600                               struct xfrm_sec_ctx **new_ctxp)
1601 {
1602         return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1603 }
1604
1605 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1606 {
1607         call_void_hook(xfrm_policy_free_security, ctx);
1608 }
1609 EXPORT_SYMBOL(security_xfrm_policy_free);
1610
1611 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1612 {
1613         return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1614 }
1615
1616 int security_xfrm_state_alloc(struct xfrm_state *x,
1617                               struct xfrm_user_sec_ctx *sec_ctx)
1618 {
1619         return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1620 }
1621 EXPORT_SYMBOL(security_xfrm_state_alloc);
1622
1623 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1624                                       struct xfrm_sec_ctx *polsec, u32 secid)
1625 {
1626         return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1627 }
1628
1629 int security_xfrm_state_delete(struct xfrm_state *x)
1630 {
1631         return call_int_hook(xfrm_state_delete_security, 0, x);
1632 }
1633 EXPORT_SYMBOL(security_xfrm_state_delete);
1634
1635 void security_xfrm_state_free(struct xfrm_state *x)
1636 {
1637         call_void_hook(xfrm_state_free_security, x);
1638 }
1639
1640 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1641 {
1642         return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1643 }
1644
1645 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1646                                        struct xfrm_policy *xp,
1647                                        const struct flowi *fl)
1648 {
1649         struct security_hook_list *hp;
1650         int rc = 1;
1651
1652         /*
1653          * Since this function is expected to return 0 or 1, the judgment
1654          * becomes difficult if multiple LSMs supply this call. Fortunately,
1655          * we can use the first LSM's judgment because currently only SELinux
1656          * supplies this call.
1657          *
1658          * For speed optimization, we explicitly break the loop rather than
1659          * using the macro
1660          */
1661         hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1662                                 list) {
1663                 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1664                 break;
1665         }
1666         return rc;
1667 }
1668
1669 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1670 {
1671         return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1672 }
1673
1674 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1675 {
1676         int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1677                                 0);
1678
1679         BUG_ON(rc);
1680 }
1681 EXPORT_SYMBOL(security_skb_classify_flow);
1682
1683 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1684
1685 #ifdef CONFIG_KEYS
1686
1687 int security_key_alloc(struct key *key, const struct cred *cred,
1688                        unsigned long flags)
1689 {
1690         return call_int_hook(key_alloc, 0, key, cred, flags);
1691 }
1692
1693 void security_key_free(struct key *key)
1694 {
1695         call_void_hook(key_free, key);
1696 }
1697
1698 int security_key_permission(key_ref_t key_ref,
1699                             const struct cred *cred, unsigned perm)
1700 {
1701         return call_int_hook(key_permission, 0, key_ref, cred, perm);
1702 }
1703
1704 int security_key_getsecurity(struct key *key, char **_buffer)
1705 {
1706         *_buffer = NULL;
1707         return call_int_hook(key_getsecurity, 0, key, _buffer);
1708 }
1709
1710 #endif  /* CONFIG_KEYS */
1711
1712 #ifdef CONFIG_AUDIT
1713
1714 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1715 {
1716         return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1717 }
1718
1719 int security_audit_rule_known(struct audit_krule *krule)
1720 {
1721         return call_int_hook(audit_rule_known, 0, krule);
1722 }
1723
1724 void security_audit_rule_free(void *lsmrule)
1725 {
1726         call_void_hook(audit_rule_free, lsmrule);
1727 }
1728
1729 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1730                               struct audit_context *actx)
1731 {
1732         return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1733                                 actx);
1734 }
1735 #endif /* CONFIG_AUDIT */
1736
1737 #ifdef CONFIG_BPF_SYSCALL
1738 int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
1739 {
1740         return call_int_hook(bpf, 0, cmd, attr, size);
1741 }
1742 int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1743 {
1744         return call_int_hook(bpf_map, 0, map, fmode);
1745 }
1746 int security_bpf_prog(struct bpf_prog *prog)
1747 {
1748         return call_int_hook(bpf_prog, 0, prog);
1749 }
1750 int security_bpf_map_alloc(struct bpf_map *map)
1751 {
1752         return call_int_hook(bpf_map_alloc_security, 0, map);
1753 }
1754 int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1755 {
1756         return call_int_hook(bpf_prog_alloc_security, 0, aux);
1757 }
1758 void security_bpf_map_free(struct bpf_map *map)
1759 {
1760         call_void_hook(bpf_map_free_security, map);
1761 }
1762 void security_bpf_prog_free(struct bpf_prog_aux *aux)
1763 {
1764         call_void_hook(bpf_prog_free_security, aux);
1765 }
1766 #endif /* CONFIG_BPF_SYSCALL */