987afe3d464c5f818d937eef264751279d09a7cf
[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 #include <trace/events/initcall.h>
34
35 #define MAX_LSM_EVM_XATTR       2
36
37 /* Maximum number of letters for an LSM name string */
38 #define SECURITY_NAME_MAX       10
39
40 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
41 static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain);
42
43 char *lsm_names;
44 /* Boot-time LSM user choice */
45 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
46         CONFIG_DEFAULT_SECURITY;
47
48 static void __init do_security_initcalls(void)
49 {
50         int ret;
51         initcall_t *call;
52         call = __security_initcall_start;
53         trace_initcall_level("security");
54         while (call < __security_initcall_end) {
55                 trace_initcall_start((*call));
56                 ret = (*call) ();
57                 trace_initcall_finish((*call), ret);
58                 call++;
59         }
60 }
61
62 /**
63  * security_init - initializes the security framework
64  *
65  * This should be called early in the kernel initialization sequence.
66  */
67 int __init security_init(void)
68 {
69         int i;
70         struct list_head *list = (struct list_head *) &security_hook_heads;
71
72         for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head);
73              i++)
74                 INIT_LIST_HEAD(&list[i]);
75         pr_info("Security Framework initialized\n");
76
77         /*
78          * Load minor LSMs, with the capability module always first.
79          */
80         capability_add_hooks();
81         yama_add_hooks();
82         loadpin_add_hooks();
83
84         /*
85          * Load all the remaining security modules.
86          */
87         do_security_initcalls();
88
89         return 0;
90 }
91
92 /* Save user chosen LSM */
93 static int __init choose_lsm(char *str)
94 {
95         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
96         return 1;
97 }
98 __setup("security=", choose_lsm);
99
100 static bool match_last_lsm(const char *list, const char *lsm)
101 {
102         const char *last;
103
104         if (WARN_ON(!list || !lsm))
105                 return false;
106         last = strrchr(list, ',');
107         if (last)
108                 /* Pass the comma, strcmp() will check for '\0' */
109                 last++;
110         else
111                 last = list;
112         return !strcmp(last, lsm);
113 }
114
115 static int lsm_append(char *new, char **result)
116 {
117         char *cp;
118
119         if (*result == NULL) {
120                 *result = kstrdup(new, GFP_KERNEL);
121         } else {
122                 /* Check if it is the last registered name */
123                 if (match_last_lsm(*result, new))
124                         return 0;
125                 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
126                 if (cp == NULL)
127                         return -ENOMEM;
128                 kfree(*result);
129                 *result = cp;
130         }
131         return 0;
132 }
133
134 /**
135  * security_module_enable - Load given security module on boot ?
136  * @module: the name of the module
137  *
138  * Each LSM must pass this method before registering its own operations
139  * to avoid security registration races. This method may also be used
140  * to check if your LSM is currently loaded during kernel initialization.
141  *
142  * Returns:
143  *
144  * true if:
145  *
146  * - The passed LSM is the one chosen by user at boot time,
147  * - or the passed LSM is configured as the default and the user did not
148  *   choose an alternate LSM at boot time.
149  *
150  * Otherwise, return false.
151  */
152 int __init security_module_enable(const char *module)
153 {
154         return !strcmp(module, chosen_lsm);
155 }
156
157 /**
158  * security_add_hooks - Add a modules hooks to the hook lists.
159  * @hooks: the hooks to add
160  * @count: the number of hooks to add
161  * @lsm: the name of the security module
162  *
163  * Each LSM has to register its hooks with the infrastructure.
164  */
165 void __init security_add_hooks(struct security_hook_list *hooks, int count,
166                                 char *lsm)
167 {
168         int i;
169
170         for (i = 0; i < count; i++) {
171                 hooks[i].lsm = lsm;
172                 list_add_tail_rcu(&hooks[i].list, hooks[i].head);
173         }
174         if (lsm_append(lsm, &lsm_names) < 0)
175                 panic("%s - Cannot get early memory.\n", __func__);
176 }
177
178 int call_lsm_notifier(enum lsm_event event, void *data)
179 {
180         return atomic_notifier_call_chain(&lsm_notifier_chain, event, data);
181 }
182 EXPORT_SYMBOL(call_lsm_notifier);
183
184 int register_lsm_notifier(struct notifier_block *nb)
185 {
186         return atomic_notifier_chain_register(&lsm_notifier_chain, nb);
187 }
188 EXPORT_SYMBOL(register_lsm_notifier);
189
190 int unregister_lsm_notifier(struct notifier_block *nb)
191 {
192         return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb);
193 }
194 EXPORT_SYMBOL(unregister_lsm_notifier);
195
196 /*
197  * Hook list operation macros.
198  *
199  * call_void_hook:
200  *      This is a hook that does not return a value.
201  *
202  * call_int_hook:
203  *      This is a hook that returns a value.
204  */
205
206 #define call_void_hook(FUNC, ...)                               \
207         do {                                                    \
208                 struct security_hook_list *P;                   \
209                                                                 \
210                 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
211                         P->hook.FUNC(__VA_ARGS__);              \
212         } while (0)
213
214 #define call_int_hook(FUNC, IRC, ...) ({                        \
215         int RC = IRC;                                           \
216         do {                                                    \
217                 struct security_hook_list *P;                   \
218                                                                 \
219                 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
220                         RC = P->hook.FUNC(__VA_ARGS__);         \
221                         if (RC != 0)                            \
222                                 break;                          \
223                 }                                               \
224         } while (0);                                            \
225         RC;                                                     \
226 })
227
228 /* Security operations */
229
230 int security_binder_set_context_mgr(struct task_struct *mgr)
231 {
232         return call_int_hook(binder_set_context_mgr, 0, mgr);
233 }
234
235 int security_binder_transaction(struct task_struct *from,
236                                 struct task_struct *to)
237 {
238         return call_int_hook(binder_transaction, 0, from, to);
239 }
240
241 int security_binder_transfer_binder(struct task_struct *from,
242                                     struct task_struct *to)
243 {
244         return call_int_hook(binder_transfer_binder, 0, from, to);
245 }
246
247 int security_binder_transfer_file(struct task_struct *from,
248                                   struct task_struct *to, struct file *file)
249 {
250         return call_int_hook(binder_transfer_file, 0, from, to, file);
251 }
252
253 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
254 {
255         return call_int_hook(ptrace_access_check, 0, child, mode);
256 }
257
258 int security_ptrace_traceme(struct task_struct *parent)
259 {
260         return call_int_hook(ptrace_traceme, 0, parent);
261 }
262
263 int security_capget(struct task_struct *target,
264                      kernel_cap_t *effective,
265                      kernel_cap_t *inheritable,
266                      kernel_cap_t *permitted)
267 {
268         return call_int_hook(capget, 0, target,
269                                 effective, inheritable, permitted);
270 }
271
272 int security_capset(struct cred *new, const struct cred *old,
273                     const kernel_cap_t *effective,
274                     const kernel_cap_t *inheritable,
275                     const kernel_cap_t *permitted)
276 {
277         return call_int_hook(capset, 0, new, old,
278                                 effective, inheritable, permitted);
279 }
280
281 int security_capable(const struct cred *cred, struct user_namespace *ns,
282                      int cap)
283 {
284         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
285 }
286
287 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
288                              int cap)
289 {
290         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
291 }
292
293 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
294 {
295         return call_int_hook(quotactl, 0, cmds, type, id, sb);
296 }
297
298 int security_quota_on(struct dentry *dentry)
299 {
300         return call_int_hook(quota_on, 0, dentry);
301 }
302
303 int security_syslog(int type)
304 {
305         return call_int_hook(syslog, 0, type);
306 }
307
308 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
309 {
310         return call_int_hook(settime, 0, ts, tz);
311 }
312
313 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
314 {
315         struct security_hook_list *hp;
316         int cap_sys_admin = 1;
317         int rc;
318
319         /*
320          * The module will respond with a positive value if
321          * it thinks the __vm_enough_memory() call should be
322          * made with the cap_sys_admin set. If all of the modules
323          * agree that it should be set it will. If any module
324          * thinks it should not be set it won't.
325          */
326         list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
327                 rc = hp->hook.vm_enough_memory(mm, pages);
328                 if (rc <= 0) {
329                         cap_sys_admin = 0;
330                         break;
331                 }
332         }
333         return __vm_enough_memory(mm, pages, cap_sys_admin);
334 }
335
336 int security_bprm_set_creds(struct linux_binprm *bprm)
337 {
338         return call_int_hook(bprm_set_creds, 0, bprm);
339 }
340
341 int security_bprm_check(struct linux_binprm *bprm)
342 {
343         int ret;
344
345         ret = call_int_hook(bprm_check_security, 0, bprm);
346         if (ret)
347                 return ret;
348         return ima_bprm_check(bprm);
349 }
350
351 void security_bprm_committing_creds(struct linux_binprm *bprm)
352 {
353         call_void_hook(bprm_committing_creds, bprm);
354 }
355
356 void security_bprm_committed_creds(struct linux_binprm *bprm)
357 {
358         call_void_hook(bprm_committed_creds, bprm);
359 }
360
361 int security_sb_alloc(struct super_block *sb)
362 {
363         return call_int_hook(sb_alloc_security, 0, sb);
364 }
365
366 void security_sb_free(struct super_block *sb)
367 {
368         call_void_hook(sb_free_security, sb);
369 }
370
371 int security_sb_copy_data(char *orig, char *copy)
372 {
373         return call_int_hook(sb_copy_data, 0, orig, copy);
374 }
375 EXPORT_SYMBOL(security_sb_copy_data);
376
377 int security_sb_remount(struct super_block *sb, void *data)
378 {
379         return call_int_hook(sb_remount, 0, sb, data);
380 }
381
382 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
383 {
384         return call_int_hook(sb_kern_mount, 0, sb, flags, data);
385 }
386
387 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
388 {
389         return call_int_hook(sb_show_options, 0, m, sb);
390 }
391
392 int security_sb_statfs(struct dentry *dentry)
393 {
394         return call_int_hook(sb_statfs, 0, dentry);
395 }
396
397 int security_sb_mount(const char *dev_name, const struct path *path,
398                        const char *type, unsigned long flags, void *data)
399 {
400         return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
401 }
402
403 int security_sb_umount(struct vfsmount *mnt, int flags)
404 {
405         return call_int_hook(sb_umount, 0, mnt, flags);
406 }
407
408 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
409 {
410         return call_int_hook(sb_pivotroot, 0, old_path, new_path);
411 }
412
413 int security_sb_set_mnt_opts(struct super_block *sb,
414                                 struct security_mnt_opts *opts,
415                                 unsigned long kern_flags,
416                                 unsigned long *set_kern_flags)
417 {
418         return call_int_hook(sb_set_mnt_opts,
419                                 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
420                                 opts, kern_flags, set_kern_flags);
421 }
422 EXPORT_SYMBOL(security_sb_set_mnt_opts);
423
424 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
425                                 struct super_block *newsb,
426                                 unsigned long kern_flags,
427                                 unsigned long *set_kern_flags)
428 {
429         return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
430                                 kern_flags, set_kern_flags);
431 }
432 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
433
434 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
435 {
436         return call_int_hook(sb_parse_opts_str, 0, options, opts);
437 }
438 EXPORT_SYMBOL(security_sb_parse_opts_str);
439
440 int security_inode_alloc(struct inode *inode)
441 {
442         inode->i_security = NULL;
443         return call_int_hook(inode_alloc_security, 0, inode);
444 }
445
446 void security_inode_free(struct inode *inode)
447 {
448         integrity_inode_free(inode);
449         call_void_hook(inode_free_security, inode);
450 }
451
452 int security_dentry_init_security(struct dentry *dentry, int mode,
453                                         const struct qstr *name, void **ctx,
454                                         u32 *ctxlen)
455 {
456         return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
457                                 name, ctx, ctxlen);
458 }
459 EXPORT_SYMBOL(security_dentry_init_security);
460
461 int security_dentry_create_files_as(struct dentry *dentry, int mode,
462                                     struct qstr *name,
463                                     const struct cred *old, struct cred *new)
464 {
465         return call_int_hook(dentry_create_files_as, 0, dentry, mode,
466                                 name, old, new);
467 }
468 EXPORT_SYMBOL(security_dentry_create_files_as);
469
470 int security_inode_init_security(struct inode *inode, struct inode *dir,
471                                  const struct qstr *qstr,
472                                  const initxattrs initxattrs, void *fs_data)
473 {
474         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
475         struct xattr *lsm_xattr, *evm_xattr, *xattr;
476         int ret;
477
478         if (unlikely(IS_PRIVATE(inode)))
479                 return 0;
480
481         if (!initxattrs)
482                 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
483                                      dir, qstr, NULL, NULL, NULL);
484         memset(new_xattrs, 0, sizeof(new_xattrs));
485         lsm_xattr = new_xattrs;
486         ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
487                                                 &lsm_xattr->name,
488                                                 &lsm_xattr->value,
489                                                 &lsm_xattr->value_len);
490         if (ret)
491                 goto out;
492
493         evm_xattr = lsm_xattr + 1;
494         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
495         if (ret)
496                 goto out;
497         ret = initxattrs(inode, new_xattrs, fs_data);
498 out:
499         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
500                 kfree(xattr->value);
501         return (ret == -EOPNOTSUPP) ? 0 : ret;
502 }
503 EXPORT_SYMBOL(security_inode_init_security);
504
505 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
506                                      const struct qstr *qstr, const char **name,
507                                      void **value, size_t *len)
508 {
509         if (unlikely(IS_PRIVATE(inode)))
510                 return -EOPNOTSUPP;
511         return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
512                              qstr, name, value, len);
513 }
514 EXPORT_SYMBOL(security_old_inode_init_security);
515
516 #ifdef CONFIG_SECURITY_PATH
517 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
518                         unsigned int dev)
519 {
520         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
521                 return 0;
522         return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
523 }
524 EXPORT_SYMBOL(security_path_mknod);
525
526 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
527 {
528         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
529                 return 0;
530         return call_int_hook(path_mkdir, 0, dir, dentry, mode);
531 }
532 EXPORT_SYMBOL(security_path_mkdir);
533
534 int security_path_rmdir(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_rmdir, 0, dir, dentry);
539 }
540
541 int security_path_unlink(const struct path *dir, struct dentry *dentry)
542 {
543         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
544                 return 0;
545         return call_int_hook(path_unlink, 0, dir, dentry);
546 }
547 EXPORT_SYMBOL(security_path_unlink);
548
549 int security_path_symlink(const struct path *dir, struct dentry *dentry,
550                           const char *old_name)
551 {
552         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
553                 return 0;
554         return call_int_hook(path_symlink, 0, dir, dentry, old_name);
555 }
556
557 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
558                        struct dentry *new_dentry)
559 {
560         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
561                 return 0;
562         return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
563 }
564
565 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
566                          const struct path *new_dir, struct dentry *new_dentry,
567                          unsigned int flags)
568 {
569         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
570                      (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
571                 return 0;
572
573         if (flags & RENAME_EXCHANGE) {
574                 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
575                                         old_dir, old_dentry);
576                 if (err)
577                         return err;
578         }
579
580         return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
581                                 new_dentry);
582 }
583 EXPORT_SYMBOL(security_path_rename);
584
585 int security_path_truncate(const struct path *path)
586 {
587         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
588                 return 0;
589         return call_int_hook(path_truncate, 0, path);
590 }
591
592 int security_path_chmod(const struct path *path, umode_t mode)
593 {
594         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
595                 return 0;
596         return call_int_hook(path_chmod, 0, path, mode);
597 }
598
599 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
600 {
601         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
602                 return 0;
603         return call_int_hook(path_chown, 0, path, uid, gid);
604 }
605
606 int security_path_chroot(const struct path *path)
607 {
608         return call_int_hook(path_chroot, 0, path);
609 }
610 #endif
611
612 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
613 {
614         if (unlikely(IS_PRIVATE(dir)))
615                 return 0;
616         return call_int_hook(inode_create, 0, dir, dentry, mode);
617 }
618 EXPORT_SYMBOL_GPL(security_inode_create);
619
620 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
621                          struct dentry *new_dentry)
622 {
623         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
624                 return 0;
625         return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
626 }
627
628 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
629 {
630         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
631                 return 0;
632         return call_int_hook(inode_unlink, 0, dir, dentry);
633 }
634
635 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
636                             const char *old_name)
637 {
638         if (unlikely(IS_PRIVATE(dir)))
639                 return 0;
640         return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
641 }
642
643 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
644 {
645         if (unlikely(IS_PRIVATE(dir)))
646                 return 0;
647         return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
648 }
649 EXPORT_SYMBOL_GPL(security_inode_mkdir);
650
651 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
652 {
653         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
654                 return 0;
655         return call_int_hook(inode_rmdir, 0, dir, dentry);
656 }
657
658 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
659 {
660         if (unlikely(IS_PRIVATE(dir)))
661                 return 0;
662         return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
663 }
664
665 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
666                            struct inode *new_dir, struct dentry *new_dentry,
667                            unsigned int flags)
668 {
669         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
670             (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
671                 return 0;
672
673         if (flags & RENAME_EXCHANGE) {
674                 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
675                                                      old_dir, old_dentry);
676                 if (err)
677                         return err;
678         }
679
680         return call_int_hook(inode_rename, 0, old_dir, old_dentry,
681                                            new_dir, new_dentry);
682 }
683
684 int security_inode_readlink(struct dentry *dentry)
685 {
686         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
687                 return 0;
688         return call_int_hook(inode_readlink, 0, dentry);
689 }
690
691 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
692                                bool rcu)
693 {
694         if (unlikely(IS_PRIVATE(inode)))
695                 return 0;
696         return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
697 }
698
699 int security_inode_permission(struct inode *inode, int mask)
700 {
701         if (unlikely(IS_PRIVATE(inode)))
702                 return 0;
703         return call_int_hook(inode_permission, 0, inode, mask);
704 }
705
706 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
707 {
708         int ret;
709
710         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
711                 return 0;
712         ret = call_int_hook(inode_setattr, 0, dentry, attr);
713         if (ret)
714                 return ret;
715         return evm_inode_setattr(dentry, attr);
716 }
717 EXPORT_SYMBOL_GPL(security_inode_setattr);
718
719 int security_inode_getattr(const struct path *path)
720 {
721         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
722                 return 0;
723         return call_int_hook(inode_getattr, 0, path);
724 }
725
726 int security_inode_setxattr(struct dentry *dentry, const char *name,
727                             const void *value, size_t size, int flags)
728 {
729         int ret;
730
731         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
732                 return 0;
733         /*
734          * SELinux and Smack integrate the cap call,
735          * so assume that all LSMs supplying this call do so.
736          */
737         ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
738                                 flags);
739
740         if (ret == 1)
741                 ret = cap_inode_setxattr(dentry, name, value, size, flags);
742         if (ret)
743                 return ret;
744         ret = ima_inode_setxattr(dentry, name, value, size);
745         if (ret)
746                 return ret;
747         return evm_inode_setxattr(dentry, name, value, size);
748 }
749
750 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
751                                   const void *value, size_t size, int flags)
752 {
753         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
754                 return;
755         call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
756         evm_inode_post_setxattr(dentry, name, value, size);
757 }
758
759 int security_inode_getxattr(struct dentry *dentry, const char *name)
760 {
761         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
762                 return 0;
763         return call_int_hook(inode_getxattr, 0, dentry, name);
764 }
765
766 int security_inode_listxattr(struct dentry *dentry)
767 {
768         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
769                 return 0;
770         return call_int_hook(inode_listxattr, 0, dentry);
771 }
772
773 int security_inode_removexattr(struct dentry *dentry, const char *name)
774 {
775         int ret;
776
777         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
778                 return 0;
779         /*
780          * SELinux and Smack integrate the cap call,
781          * so assume that all LSMs supplying this call do so.
782          */
783         ret = call_int_hook(inode_removexattr, 1, dentry, name);
784         if (ret == 1)
785                 ret = cap_inode_removexattr(dentry, name);
786         if (ret)
787                 return ret;
788         ret = ima_inode_removexattr(dentry, name);
789         if (ret)
790                 return ret;
791         return evm_inode_removexattr(dentry, name);
792 }
793
794 int security_inode_need_killpriv(struct dentry *dentry)
795 {
796         return call_int_hook(inode_need_killpriv, 0, dentry);
797 }
798
799 int security_inode_killpriv(struct dentry *dentry)
800 {
801         return call_int_hook(inode_killpriv, 0, dentry);
802 }
803
804 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
805 {
806         struct security_hook_list *hp;
807         int rc;
808
809         if (unlikely(IS_PRIVATE(inode)))
810                 return -EOPNOTSUPP;
811         /*
812          * Only one module will provide an attribute with a given name.
813          */
814         list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
815                 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
816                 if (rc != -EOPNOTSUPP)
817                         return rc;
818         }
819         return -EOPNOTSUPP;
820 }
821
822 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
823 {
824         struct security_hook_list *hp;
825         int rc;
826
827         if (unlikely(IS_PRIVATE(inode)))
828                 return -EOPNOTSUPP;
829         /*
830          * Only one module will provide an attribute with a given name.
831          */
832         list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
833                 rc = hp->hook.inode_setsecurity(inode, name, value, size,
834                                                                 flags);
835                 if (rc != -EOPNOTSUPP)
836                         return rc;
837         }
838         return -EOPNOTSUPP;
839 }
840
841 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
842 {
843         if (unlikely(IS_PRIVATE(inode)))
844                 return 0;
845         return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
846 }
847 EXPORT_SYMBOL(security_inode_listsecurity);
848
849 void security_inode_getsecid(struct inode *inode, u32 *secid)
850 {
851         call_void_hook(inode_getsecid, inode, secid);
852 }
853
854 int security_inode_copy_up(struct dentry *src, struct cred **new)
855 {
856         return call_int_hook(inode_copy_up, 0, src, new);
857 }
858 EXPORT_SYMBOL(security_inode_copy_up);
859
860 int security_inode_copy_up_xattr(const char *name)
861 {
862         return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
863 }
864 EXPORT_SYMBOL(security_inode_copy_up_xattr);
865
866 int security_file_permission(struct file *file, int mask)
867 {
868         int ret;
869
870         ret = call_int_hook(file_permission, 0, file, mask);
871         if (ret)
872                 return ret;
873
874         return fsnotify_perm(file, mask);
875 }
876
877 int security_file_alloc(struct file *file)
878 {
879         return call_int_hook(file_alloc_security, 0, file);
880 }
881
882 void security_file_free(struct file *file)
883 {
884         call_void_hook(file_free_security, file);
885 }
886
887 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
888 {
889         return call_int_hook(file_ioctl, 0, file, cmd, arg);
890 }
891
892 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
893 {
894         /*
895          * Does we have PROT_READ and does the application expect
896          * it to imply PROT_EXEC?  If not, nothing to talk about...
897          */
898         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
899                 return prot;
900         if (!(current->personality & READ_IMPLIES_EXEC))
901                 return prot;
902         /*
903          * if that's an anonymous mapping, let it.
904          */
905         if (!file)
906                 return prot | PROT_EXEC;
907         /*
908          * ditto if it's not on noexec mount, except that on !MMU we need
909          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
910          */
911         if (!path_noexec(&file->f_path)) {
912 #ifndef CONFIG_MMU
913                 if (file->f_op->mmap_capabilities) {
914                         unsigned caps = file->f_op->mmap_capabilities(file);
915                         if (!(caps & NOMMU_MAP_EXEC))
916                                 return prot;
917                 }
918 #endif
919                 return prot | PROT_EXEC;
920         }
921         /* anything on noexec mount won't get PROT_EXEC */
922         return prot;
923 }
924
925 int security_mmap_file(struct file *file, unsigned long prot,
926                         unsigned long flags)
927 {
928         int ret;
929         ret = call_int_hook(mmap_file, 0, file, prot,
930                                         mmap_prot(file, prot), flags);
931         if (ret)
932                 return ret;
933         return ima_file_mmap(file, prot);
934 }
935
936 int security_mmap_addr(unsigned long addr)
937 {
938         return call_int_hook(mmap_addr, 0, addr);
939 }
940
941 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
942                             unsigned long prot)
943 {
944         return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
945 }
946
947 int security_file_lock(struct file *file, unsigned int cmd)
948 {
949         return call_int_hook(file_lock, 0, file, cmd);
950 }
951
952 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
953 {
954         return call_int_hook(file_fcntl, 0, file, cmd, arg);
955 }
956
957 void security_file_set_fowner(struct file *file)
958 {
959         call_void_hook(file_set_fowner, file);
960 }
961
962 int security_file_send_sigiotask(struct task_struct *tsk,
963                                   struct fown_struct *fown, int sig)
964 {
965         return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
966 }
967
968 int security_file_receive(struct file *file)
969 {
970         return call_int_hook(file_receive, 0, file);
971 }
972
973 int security_file_open(struct file *file, const struct cred *cred)
974 {
975         int ret;
976
977         ret = call_int_hook(file_open, 0, file, cred);
978         if (ret)
979                 return ret;
980
981         return fsnotify_perm(file, MAY_OPEN);
982 }
983
984 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
985 {
986         return call_int_hook(task_alloc, 0, task, clone_flags);
987 }
988
989 void security_task_free(struct task_struct *task)
990 {
991         call_void_hook(task_free, task);
992 }
993
994 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
995 {
996         return call_int_hook(cred_alloc_blank, 0, cred, gfp);
997 }
998
999 void security_cred_free(struct cred *cred)
1000 {
1001         call_void_hook(cred_free, cred);
1002 }
1003
1004 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1005 {
1006         return call_int_hook(cred_prepare, 0, new, old, gfp);
1007 }
1008
1009 void security_transfer_creds(struct cred *new, const struct cred *old)
1010 {
1011         call_void_hook(cred_transfer, new, old);
1012 }
1013
1014 int security_kernel_act_as(struct cred *new, u32 secid)
1015 {
1016         return call_int_hook(kernel_act_as, 0, new, secid);
1017 }
1018
1019 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1020 {
1021         return call_int_hook(kernel_create_files_as, 0, new, inode);
1022 }
1023
1024 int security_kernel_module_request(char *kmod_name)
1025 {
1026         return call_int_hook(kernel_module_request, 0, kmod_name);
1027 }
1028
1029 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1030 {
1031         int ret;
1032
1033         ret = call_int_hook(kernel_read_file, 0, file, id);
1034         if (ret)
1035                 return ret;
1036         return ima_read_file(file, id);
1037 }
1038 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1039
1040 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1041                                    enum kernel_read_file_id id)
1042 {
1043         int ret;
1044
1045         ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1046         if (ret)
1047                 return ret;
1048         return ima_post_read_file(file, buf, size, id);
1049 }
1050 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1051
1052 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1053                              int flags)
1054 {
1055         return call_int_hook(task_fix_setuid, 0, new, old, flags);
1056 }
1057
1058 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1059 {
1060         return call_int_hook(task_setpgid, 0, p, pgid);
1061 }
1062
1063 int security_task_getpgid(struct task_struct *p)
1064 {
1065         return call_int_hook(task_getpgid, 0, p);
1066 }
1067
1068 int security_task_getsid(struct task_struct *p)
1069 {
1070         return call_int_hook(task_getsid, 0, p);
1071 }
1072
1073 void security_task_getsecid(struct task_struct *p, u32 *secid)
1074 {
1075         *secid = 0;
1076         call_void_hook(task_getsecid, p, secid);
1077 }
1078 EXPORT_SYMBOL(security_task_getsecid);
1079
1080 int security_task_setnice(struct task_struct *p, int nice)
1081 {
1082         return call_int_hook(task_setnice, 0, p, nice);
1083 }
1084
1085 int security_task_setioprio(struct task_struct *p, int ioprio)
1086 {
1087         return call_int_hook(task_setioprio, 0, p, ioprio);
1088 }
1089
1090 int security_task_getioprio(struct task_struct *p)
1091 {
1092         return call_int_hook(task_getioprio, 0, p);
1093 }
1094
1095 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1096                           unsigned int flags)
1097 {
1098         return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1099 }
1100
1101 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1102                 struct rlimit *new_rlim)
1103 {
1104         return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1105 }
1106
1107 int security_task_setscheduler(struct task_struct *p)
1108 {
1109         return call_int_hook(task_setscheduler, 0, p);
1110 }
1111
1112 int security_task_getscheduler(struct task_struct *p)
1113 {
1114         return call_int_hook(task_getscheduler, 0, p);
1115 }
1116
1117 int security_task_movememory(struct task_struct *p)
1118 {
1119         return call_int_hook(task_movememory, 0, p);
1120 }
1121
1122 int security_task_kill(struct task_struct *p, struct siginfo *info,
1123                         int sig, u32 secid)
1124 {
1125         return call_int_hook(task_kill, 0, p, info, sig, secid);
1126 }
1127
1128 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1129                          unsigned long arg4, unsigned long arg5)
1130 {
1131         int thisrc;
1132         int rc = -ENOSYS;
1133         struct security_hook_list *hp;
1134
1135         list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1136                 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1137                 if (thisrc != -ENOSYS) {
1138                         rc = thisrc;
1139                         if (thisrc != 0)
1140                                 break;
1141                 }
1142         }
1143         return rc;
1144 }
1145
1146 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1147 {
1148         call_void_hook(task_to_inode, p, inode);
1149 }
1150
1151 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1152 {
1153         return call_int_hook(ipc_permission, 0, ipcp, flag);
1154 }
1155
1156 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1157 {
1158         *secid = 0;
1159         call_void_hook(ipc_getsecid, ipcp, secid);
1160 }
1161
1162 int security_msg_msg_alloc(struct msg_msg *msg)
1163 {
1164         return call_int_hook(msg_msg_alloc_security, 0, msg);
1165 }
1166
1167 void security_msg_msg_free(struct msg_msg *msg)
1168 {
1169         call_void_hook(msg_msg_free_security, msg);
1170 }
1171
1172 int security_msg_queue_alloc(struct msg_queue *msq)
1173 {
1174         return call_int_hook(msg_queue_alloc_security, 0, msq);
1175 }
1176
1177 void security_msg_queue_free(struct msg_queue *msq)
1178 {
1179         call_void_hook(msg_queue_free_security, msq);
1180 }
1181
1182 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
1183 {
1184         return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1185 }
1186
1187 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1188 {
1189         return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1190 }
1191
1192 int security_msg_queue_msgsnd(struct msg_queue *msq,
1193                                struct msg_msg *msg, int msqflg)
1194 {
1195         return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1196 }
1197
1198 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1199                                struct task_struct *target, long type, int mode)
1200 {
1201         return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1202 }
1203
1204 int security_shm_alloc(struct shmid_kernel *shp)
1205 {
1206         return call_int_hook(shm_alloc_security, 0, shp);
1207 }
1208
1209 void security_shm_free(struct shmid_kernel *shp)
1210 {
1211         call_void_hook(shm_free_security, shp);
1212 }
1213
1214 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1215 {
1216         return call_int_hook(shm_associate, 0, shp, shmflg);
1217 }
1218
1219 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1220 {
1221         return call_int_hook(shm_shmctl, 0, shp, cmd);
1222 }
1223
1224 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1225 {
1226         return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1227 }
1228
1229 int security_sem_alloc(struct sem_array *sma)
1230 {
1231         return call_int_hook(sem_alloc_security, 0, sma);
1232 }
1233
1234 void security_sem_free(struct sem_array *sma)
1235 {
1236         call_void_hook(sem_free_security, sma);
1237 }
1238
1239 int security_sem_associate(struct sem_array *sma, int semflg)
1240 {
1241         return call_int_hook(sem_associate, 0, sma, semflg);
1242 }
1243
1244 int security_sem_semctl(struct sem_array *sma, int cmd)
1245 {
1246         return call_int_hook(sem_semctl, 0, sma, cmd);
1247 }
1248
1249 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1250                         unsigned nsops, int alter)
1251 {
1252         return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1253 }
1254
1255 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1256 {
1257         if (unlikely(inode && IS_PRIVATE(inode)))
1258                 return;
1259         call_void_hook(d_instantiate, dentry, inode);
1260 }
1261 EXPORT_SYMBOL(security_d_instantiate);
1262
1263 int security_getprocattr(struct task_struct *p, char *name, char **value)
1264 {
1265         return call_int_hook(getprocattr, -EINVAL, p, name, value);
1266 }
1267
1268 int security_setprocattr(const char *name, void *value, size_t size)
1269 {
1270         return call_int_hook(setprocattr, -EINVAL, name, value, size);
1271 }
1272
1273 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1274 {
1275         return call_int_hook(netlink_send, 0, sk, skb);
1276 }
1277
1278 int security_ismaclabel(const char *name)
1279 {
1280         return call_int_hook(ismaclabel, 0, name);
1281 }
1282 EXPORT_SYMBOL(security_ismaclabel);
1283
1284 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1285 {
1286         return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1287                                 seclen);
1288 }
1289 EXPORT_SYMBOL(security_secid_to_secctx);
1290
1291 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1292 {
1293         *secid = 0;
1294         return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1295 }
1296 EXPORT_SYMBOL(security_secctx_to_secid);
1297
1298 void security_release_secctx(char *secdata, u32 seclen)
1299 {
1300         call_void_hook(release_secctx, secdata, seclen);
1301 }
1302 EXPORT_SYMBOL(security_release_secctx);
1303
1304 void security_inode_invalidate_secctx(struct inode *inode)
1305 {
1306         call_void_hook(inode_invalidate_secctx, inode);
1307 }
1308 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1309
1310 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1311 {
1312         return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1313 }
1314 EXPORT_SYMBOL(security_inode_notifysecctx);
1315
1316 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1317 {
1318         return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1319 }
1320 EXPORT_SYMBOL(security_inode_setsecctx);
1321
1322 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1323 {
1324         return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1325 }
1326 EXPORT_SYMBOL(security_inode_getsecctx);
1327
1328 #ifdef CONFIG_SECURITY_NETWORK
1329
1330 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1331 {
1332         return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1333 }
1334 EXPORT_SYMBOL(security_unix_stream_connect);
1335
1336 int security_unix_may_send(struct socket *sock,  struct socket *other)
1337 {
1338         return call_int_hook(unix_may_send, 0, sock, other);
1339 }
1340 EXPORT_SYMBOL(security_unix_may_send);
1341
1342 int security_socket_create(int family, int type, int protocol, int kern)
1343 {
1344         return call_int_hook(socket_create, 0, family, type, protocol, kern);
1345 }
1346
1347 int security_socket_post_create(struct socket *sock, int family,
1348                                 int type, int protocol, int kern)
1349 {
1350         return call_int_hook(socket_post_create, 0, sock, family, type,
1351                                                 protocol, kern);
1352 }
1353
1354 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1355 {
1356         return call_int_hook(socket_bind, 0, sock, address, addrlen);
1357 }
1358
1359 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1360 {
1361         return call_int_hook(socket_connect, 0, sock, address, addrlen);
1362 }
1363
1364 int security_socket_listen(struct socket *sock, int backlog)
1365 {
1366         return call_int_hook(socket_listen, 0, sock, backlog);
1367 }
1368
1369 int security_socket_accept(struct socket *sock, struct socket *newsock)
1370 {
1371         return call_int_hook(socket_accept, 0, sock, newsock);
1372 }
1373
1374 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1375 {
1376         return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1377 }
1378
1379 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1380                             int size, int flags)
1381 {
1382         return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1383 }
1384
1385 int security_socket_getsockname(struct socket *sock)
1386 {
1387         return call_int_hook(socket_getsockname, 0, sock);
1388 }
1389
1390 int security_socket_getpeername(struct socket *sock)
1391 {
1392         return call_int_hook(socket_getpeername, 0, sock);
1393 }
1394
1395 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1396 {
1397         return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1398 }
1399
1400 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1401 {
1402         return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1403 }
1404
1405 int security_socket_shutdown(struct socket *sock, int how)
1406 {
1407         return call_int_hook(socket_shutdown, 0, sock, how);
1408 }
1409
1410 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1411 {
1412         return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1413 }
1414 EXPORT_SYMBOL(security_sock_rcv_skb);
1415
1416 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1417                                       int __user *optlen, unsigned len)
1418 {
1419         return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1420                                 optval, optlen, len);
1421 }
1422
1423 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1424 {
1425         return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1426                              skb, secid);
1427 }
1428 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1429
1430 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1431 {
1432         return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1433 }
1434
1435 void security_sk_free(struct sock *sk)
1436 {
1437         call_void_hook(sk_free_security, sk);
1438 }
1439
1440 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1441 {
1442         call_void_hook(sk_clone_security, sk, newsk);
1443 }
1444 EXPORT_SYMBOL(security_sk_clone);
1445
1446 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1447 {
1448         call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1449 }
1450 EXPORT_SYMBOL(security_sk_classify_flow);
1451
1452 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1453 {
1454         call_void_hook(req_classify_flow, req, fl);
1455 }
1456 EXPORT_SYMBOL(security_req_classify_flow);
1457
1458 void security_sock_graft(struct sock *sk, struct socket *parent)
1459 {
1460         call_void_hook(sock_graft, sk, parent);
1461 }
1462 EXPORT_SYMBOL(security_sock_graft);
1463
1464 int security_inet_conn_request(struct sock *sk,
1465                         struct sk_buff *skb, struct request_sock *req)
1466 {
1467         return call_int_hook(inet_conn_request, 0, sk, skb, req);
1468 }
1469 EXPORT_SYMBOL(security_inet_conn_request);
1470
1471 void security_inet_csk_clone(struct sock *newsk,
1472                         const struct request_sock *req)
1473 {
1474         call_void_hook(inet_csk_clone, newsk, req);
1475 }
1476
1477 void security_inet_conn_established(struct sock *sk,
1478                         struct sk_buff *skb)
1479 {
1480         call_void_hook(inet_conn_established, sk, skb);
1481 }
1482
1483 int security_secmark_relabel_packet(u32 secid)
1484 {
1485         return call_int_hook(secmark_relabel_packet, 0, secid);
1486 }
1487 EXPORT_SYMBOL(security_secmark_relabel_packet);
1488
1489 void security_secmark_refcount_inc(void)
1490 {
1491         call_void_hook(secmark_refcount_inc);
1492 }
1493 EXPORT_SYMBOL(security_secmark_refcount_inc);
1494
1495 void security_secmark_refcount_dec(void)
1496 {
1497         call_void_hook(secmark_refcount_dec);
1498 }
1499 EXPORT_SYMBOL(security_secmark_refcount_dec);
1500
1501 int security_tun_dev_alloc_security(void **security)
1502 {
1503         return call_int_hook(tun_dev_alloc_security, 0, security);
1504 }
1505 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1506
1507 void security_tun_dev_free_security(void *security)
1508 {
1509         call_void_hook(tun_dev_free_security, security);
1510 }
1511 EXPORT_SYMBOL(security_tun_dev_free_security);
1512
1513 int security_tun_dev_create(void)
1514 {
1515         return call_int_hook(tun_dev_create, 0);
1516 }
1517 EXPORT_SYMBOL(security_tun_dev_create);
1518
1519 int security_tun_dev_attach_queue(void *security)
1520 {
1521         return call_int_hook(tun_dev_attach_queue, 0, security);
1522 }
1523 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1524
1525 int security_tun_dev_attach(struct sock *sk, void *security)
1526 {
1527         return call_int_hook(tun_dev_attach, 0, sk, security);
1528 }
1529 EXPORT_SYMBOL(security_tun_dev_attach);
1530
1531 int security_tun_dev_open(void *security)
1532 {
1533         return call_int_hook(tun_dev_open, 0, security);
1534 }
1535 EXPORT_SYMBOL(security_tun_dev_open);
1536
1537 #endif  /* CONFIG_SECURITY_NETWORK */
1538
1539 #ifdef CONFIG_SECURITY_INFINIBAND
1540
1541 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1542 {
1543         return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
1544 }
1545 EXPORT_SYMBOL(security_ib_pkey_access);
1546
1547 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1548 {
1549         return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
1550 }
1551 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
1552
1553 int security_ib_alloc_security(void **sec)
1554 {
1555         return call_int_hook(ib_alloc_security, 0, sec);
1556 }
1557 EXPORT_SYMBOL(security_ib_alloc_security);
1558
1559 void security_ib_free_security(void *sec)
1560 {
1561         call_void_hook(ib_free_security, sec);
1562 }
1563 EXPORT_SYMBOL(security_ib_free_security);
1564 #endif  /* CONFIG_SECURITY_INFINIBAND */
1565
1566 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1567
1568 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1569                                struct xfrm_user_sec_ctx *sec_ctx,
1570                                gfp_t gfp)
1571 {
1572         return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1573 }
1574 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1575
1576 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1577                               struct xfrm_sec_ctx **new_ctxp)
1578 {
1579         return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1580 }
1581
1582 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1583 {
1584         call_void_hook(xfrm_policy_free_security, ctx);
1585 }
1586 EXPORT_SYMBOL(security_xfrm_policy_free);
1587
1588 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1589 {
1590         return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1591 }
1592
1593 int security_xfrm_state_alloc(struct xfrm_state *x,
1594                               struct xfrm_user_sec_ctx *sec_ctx)
1595 {
1596         return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1597 }
1598 EXPORT_SYMBOL(security_xfrm_state_alloc);
1599
1600 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1601                                       struct xfrm_sec_ctx *polsec, u32 secid)
1602 {
1603         return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1604 }
1605
1606 int security_xfrm_state_delete(struct xfrm_state *x)
1607 {
1608         return call_int_hook(xfrm_state_delete_security, 0, x);
1609 }
1610 EXPORT_SYMBOL(security_xfrm_state_delete);
1611
1612 void security_xfrm_state_free(struct xfrm_state *x)
1613 {
1614         call_void_hook(xfrm_state_free_security, x);
1615 }
1616
1617 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1618 {
1619         return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1620 }
1621
1622 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1623                                        struct xfrm_policy *xp,
1624                                        const struct flowi *fl)
1625 {
1626         struct security_hook_list *hp;
1627         int rc = 1;
1628
1629         /*
1630          * Since this function is expected to return 0 or 1, the judgment
1631          * becomes difficult if multiple LSMs supply this call. Fortunately,
1632          * we can use the first LSM's judgment because currently only SELinux
1633          * supplies this call.
1634          *
1635          * For speed optimization, we explicitly break the loop rather than
1636          * using the macro
1637          */
1638         list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1639                                 list) {
1640                 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1641                 break;
1642         }
1643         return rc;
1644 }
1645
1646 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1647 {
1648         return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1649 }
1650
1651 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1652 {
1653         int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1654                                 0);
1655
1656         BUG_ON(rc);
1657 }
1658 EXPORT_SYMBOL(security_skb_classify_flow);
1659
1660 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1661
1662 #ifdef CONFIG_KEYS
1663
1664 int security_key_alloc(struct key *key, const struct cred *cred,
1665                        unsigned long flags)
1666 {
1667         return call_int_hook(key_alloc, 0, key, cred, flags);
1668 }
1669
1670 void security_key_free(struct key *key)
1671 {
1672         call_void_hook(key_free, key);
1673 }
1674
1675 int security_key_permission(key_ref_t key_ref,
1676                             const struct cred *cred, unsigned perm)
1677 {
1678         return call_int_hook(key_permission, 0, key_ref, cred, perm);
1679 }
1680
1681 int security_key_getsecurity(struct key *key, char **_buffer)
1682 {
1683         *_buffer = NULL;
1684         return call_int_hook(key_getsecurity, 0, key, _buffer);
1685 }
1686
1687 #endif  /* CONFIG_KEYS */
1688
1689 #ifdef CONFIG_AUDIT
1690
1691 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1692 {
1693         return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1694 }
1695
1696 int security_audit_rule_known(struct audit_krule *krule)
1697 {
1698         return call_int_hook(audit_rule_known, 0, krule);
1699 }
1700
1701 void security_audit_rule_free(void *lsmrule)
1702 {
1703         call_void_hook(audit_rule_free, lsmrule);
1704 }
1705
1706 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1707                               struct audit_context *actx)
1708 {
1709         return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1710                                 actx);
1711 }
1712 #endif /* CONFIG_AUDIT */
1713
1714 #ifdef CONFIG_BPF_SYSCALL
1715 int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
1716 {
1717         return call_int_hook(bpf, 0, cmd, attr, size);
1718 }
1719 int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1720 {
1721         return call_int_hook(bpf_map, 0, map, fmode);
1722 }
1723 int security_bpf_prog(struct bpf_prog *prog)
1724 {
1725         return call_int_hook(bpf_prog, 0, prog);
1726 }
1727 int security_bpf_map_alloc(struct bpf_map *map)
1728 {
1729         return call_int_hook(bpf_map_alloc_security, 0, map);
1730 }
1731 int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1732 {
1733         return call_int_hook(bpf_prog_alloc_security, 0, aux);
1734 }
1735 void security_bpf_map_free(struct bpf_map *map)
1736 {
1737         call_void_hook(bpf_map_free_security, map);
1738 }
1739 void security_bpf_prog_free(struct bpf_prog_aux *aux)
1740 {
1741         call_void_hook(bpf_prog_free_security, aux);
1742 }
1743 #endif /* CONFIG_BPF_SYSCALL */