i2c: rcar: init new messages in irq
[deliverable/linux.git] / security / security.c
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CommitLineData
1/*
2 * Security plug functions
3 *
4 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
5 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
6 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 */
13
14#include <linux/capability.h>
15#include <linux/dcache.h>
16#include <linux/module.h>
17#include <linux/init.h>
18#include <linux/kernel.h>
19#include <linux/lsm_hooks.h>
20#include <linux/integrity.h>
21#include <linux/ima.h>
22#include <linux/evm.h>
23#include <linux/fsnotify.h>
24#include <linux/mman.h>
25#include <linux/mount.h>
26#include <linux/personality.h>
27#include <linux/backing-dev.h>
28#include <net/flow.h>
29
30#define MAX_LSM_EVM_XATTR 2
31
32/* Maximum number of letters for an LSM name string */
33#define SECURITY_NAME_MAX 10
34
35/* Boot-time LSM user choice */
36static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
37 CONFIG_DEFAULT_SECURITY;
38
39static void __init do_security_initcalls(void)
40{
41 initcall_t *call;
42 call = __security_initcall_start;
43 while (call < __security_initcall_end) {
44 (*call) ();
45 call++;
46 }
47}
48
49/**
50 * security_init - initializes the security framework
51 *
52 * This should be called early in the kernel initialization sequence.
53 */
54int __init security_init(void)
55{
56 pr_info("Security Framework initialized\n");
57
58 /*
59 * Load minor LSMs, with the capability module always first.
60 */
61 capability_add_hooks();
62 yama_add_hooks();
63
64 /*
65 * Load all the remaining security modules.
66 */
67 do_security_initcalls();
68
69 return 0;
70}
71
72/* Save user chosen LSM */
73static int __init choose_lsm(char *str)
74{
75 strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
76 return 1;
77}
78__setup("security=", choose_lsm);
79
80/**
81 * security_module_enable - Load given security module on boot ?
82 * @module: the name of the module
83 *
84 * Each LSM must pass this method before registering its own operations
85 * to avoid security registration races. This method may also be used
86 * to check if your LSM is currently loaded during kernel initialization.
87 *
88 * Return true if:
89 * -The passed LSM is the one chosen by user at boot time,
90 * -or the passed LSM is configured as the default and the user did not
91 * choose an alternate LSM at boot time.
92 * Otherwise, return false.
93 */
94int __init security_module_enable(const char *module)
95{
96 return !strcmp(module, chosen_lsm);
97}
98
99/*
100 * Hook list operation macros.
101 *
102 * call_void_hook:
103 * This is a hook that does not return a value.
104 *
105 * call_int_hook:
106 * This is a hook that returns a value.
107 */
108
109#define call_void_hook(FUNC, ...) \
110 do { \
111 struct security_hook_list *P; \
112 \
113 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
114 P->hook.FUNC(__VA_ARGS__); \
115 } while (0)
116
117#define call_int_hook(FUNC, IRC, ...) ({ \
118 int RC = IRC; \
119 do { \
120 struct security_hook_list *P; \
121 \
122 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
123 RC = P->hook.FUNC(__VA_ARGS__); \
124 if (RC != 0) \
125 break; \
126 } \
127 } while (0); \
128 RC; \
129})
130
131/* Security operations */
132
133int security_binder_set_context_mgr(struct task_struct *mgr)
134{
135 return call_int_hook(binder_set_context_mgr, 0, mgr);
136}
137
138int security_binder_transaction(struct task_struct *from,
139 struct task_struct *to)
140{
141 return call_int_hook(binder_transaction, 0, from, to);
142}
143
144int security_binder_transfer_binder(struct task_struct *from,
145 struct task_struct *to)
146{
147 return call_int_hook(binder_transfer_binder, 0, from, to);
148}
149
150int security_binder_transfer_file(struct task_struct *from,
151 struct task_struct *to, struct file *file)
152{
153 return call_int_hook(binder_transfer_file, 0, from, to, file);
154}
155
156int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
157{
158 return call_int_hook(ptrace_access_check, 0, child, mode);
159}
160
161int security_ptrace_traceme(struct task_struct *parent)
162{
163 return call_int_hook(ptrace_traceme, 0, parent);
164}
165
166int security_capget(struct task_struct *target,
167 kernel_cap_t *effective,
168 kernel_cap_t *inheritable,
169 kernel_cap_t *permitted)
170{
171 return call_int_hook(capget, 0, target,
172 effective, inheritable, permitted);
173}
174
175int security_capset(struct cred *new, const struct cred *old,
176 const kernel_cap_t *effective,
177 const kernel_cap_t *inheritable,
178 const kernel_cap_t *permitted)
179{
180 return call_int_hook(capset, 0, new, old,
181 effective, inheritable, permitted);
182}
183
184int security_capable(const struct cred *cred, struct user_namespace *ns,
185 int cap)
186{
187 return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
188}
189
190int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
191 int cap)
192{
193 return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
194}
195
196int security_quotactl(int cmds, int type, int id, struct super_block *sb)
197{
198 return call_int_hook(quotactl, 0, cmds, type, id, sb);
199}
200
201int security_quota_on(struct dentry *dentry)
202{
203 return call_int_hook(quota_on, 0, dentry);
204}
205
206int security_syslog(int type)
207{
208 return call_int_hook(syslog, 0, type);
209}
210
211int security_settime(const struct timespec *ts, const struct timezone *tz)
212{
213 return call_int_hook(settime, 0, ts, tz);
214}
215
216int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
217{
218 struct security_hook_list *hp;
219 int cap_sys_admin = 1;
220 int rc;
221
222 /*
223 * The module will respond with a positive value if
224 * it thinks the __vm_enough_memory() call should be
225 * made with the cap_sys_admin set. If all of the modules
226 * agree that it should be set it will. If any module
227 * thinks it should not be set it won't.
228 */
229 list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
230 rc = hp->hook.vm_enough_memory(mm, pages);
231 if (rc <= 0) {
232 cap_sys_admin = 0;
233 break;
234 }
235 }
236 return __vm_enough_memory(mm, pages, cap_sys_admin);
237}
238
239int security_bprm_set_creds(struct linux_binprm *bprm)
240{
241 return call_int_hook(bprm_set_creds, 0, bprm);
242}
243
244int security_bprm_check(struct linux_binprm *bprm)
245{
246 int ret;
247
248 ret = call_int_hook(bprm_check_security, 0, bprm);
249 if (ret)
250 return ret;
251 return ima_bprm_check(bprm);
252}
253
254void security_bprm_committing_creds(struct linux_binprm *bprm)
255{
256 call_void_hook(bprm_committing_creds, bprm);
257}
258
259void security_bprm_committed_creds(struct linux_binprm *bprm)
260{
261 call_void_hook(bprm_committed_creds, bprm);
262}
263
264int security_bprm_secureexec(struct linux_binprm *bprm)
265{
266 return call_int_hook(bprm_secureexec, 0, bprm);
267}
268
269int security_sb_alloc(struct super_block *sb)
270{
271 return call_int_hook(sb_alloc_security, 0, sb);
272}
273
274void security_sb_free(struct super_block *sb)
275{
276 call_void_hook(sb_free_security, sb);
277}
278
279int security_sb_copy_data(char *orig, char *copy)
280{
281 return call_int_hook(sb_copy_data, 0, orig, copy);
282}
283EXPORT_SYMBOL(security_sb_copy_data);
284
285int security_sb_remount(struct super_block *sb, void *data)
286{
287 return call_int_hook(sb_remount, 0, sb, data);
288}
289
290int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
291{
292 return call_int_hook(sb_kern_mount, 0, sb, flags, data);
293}
294
295int security_sb_show_options(struct seq_file *m, struct super_block *sb)
296{
297 return call_int_hook(sb_show_options, 0, m, sb);
298}
299
300int security_sb_statfs(struct dentry *dentry)
301{
302 return call_int_hook(sb_statfs, 0, dentry);
303}
304
305int security_sb_mount(const char *dev_name, struct path *path,
306 const char *type, unsigned long flags, void *data)
307{
308 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
309}
310
311int security_sb_umount(struct vfsmount *mnt, int flags)
312{
313 return call_int_hook(sb_umount, 0, mnt, flags);
314}
315
316int security_sb_pivotroot(struct path *old_path, struct path *new_path)
317{
318 return call_int_hook(sb_pivotroot, 0, old_path, new_path);
319}
320
321int security_sb_set_mnt_opts(struct super_block *sb,
322 struct security_mnt_opts *opts,
323 unsigned long kern_flags,
324 unsigned long *set_kern_flags)
325{
326 return call_int_hook(sb_set_mnt_opts,
327 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
328 opts, kern_flags, set_kern_flags);
329}
330EXPORT_SYMBOL(security_sb_set_mnt_opts);
331
332int security_sb_clone_mnt_opts(const struct super_block *oldsb,
333 struct super_block *newsb)
334{
335 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb);
336}
337EXPORT_SYMBOL(security_sb_clone_mnt_opts);
338
339int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
340{
341 return call_int_hook(sb_parse_opts_str, 0, options, opts);
342}
343EXPORT_SYMBOL(security_sb_parse_opts_str);
344
345int security_inode_alloc(struct inode *inode)
346{
347 inode->i_security = NULL;
348 return call_int_hook(inode_alloc_security, 0, inode);
349}
350
351void security_inode_free(struct inode *inode)
352{
353 integrity_inode_free(inode);
354 call_void_hook(inode_free_security, inode);
355}
356
357int security_dentry_init_security(struct dentry *dentry, int mode,
358 struct qstr *name, void **ctx,
359 u32 *ctxlen)
360{
361 return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
362 name, ctx, ctxlen);
363}
364EXPORT_SYMBOL(security_dentry_init_security);
365
366int security_inode_init_security(struct inode *inode, struct inode *dir,
367 const struct qstr *qstr,
368 const initxattrs initxattrs, void *fs_data)
369{
370 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
371 struct xattr *lsm_xattr, *evm_xattr, *xattr;
372 int ret;
373
374 if (unlikely(IS_PRIVATE(inode)))
375 return 0;
376
377 if (!initxattrs)
378 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
379 dir, qstr, NULL, NULL, NULL);
380 memset(new_xattrs, 0, sizeof(new_xattrs));
381 lsm_xattr = new_xattrs;
382 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
383 &lsm_xattr->name,
384 &lsm_xattr->value,
385 &lsm_xattr->value_len);
386 if (ret)
387 goto out;
388
389 evm_xattr = lsm_xattr + 1;
390 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
391 if (ret)
392 goto out;
393 ret = initxattrs(inode, new_xattrs, fs_data);
394out:
395 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
396 kfree(xattr->value);
397 return (ret == -EOPNOTSUPP) ? 0 : ret;
398}
399EXPORT_SYMBOL(security_inode_init_security);
400
401int security_old_inode_init_security(struct inode *inode, struct inode *dir,
402 const struct qstr *qstr, const char **name,
403 void **value, size_t *len)
404{
405 if (unlikely(IS_PRIVATE(inode)))
406 return -EOPNOTSUPP;
407 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
408 qstr, name, value, len);
409}
410EXPORT_SYMBOL(security_old_inode_init_security);
411
412#ifdef CONFIG_SECURITY_PATH
413int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
414 unsigned int dev)
415{
416 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
417 return 0;
418 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
419}
420EXPORT_SYMBOL(security_path_mknod);
421
422int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
423{
424 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
425 return 0;
426 return call_int_hook(path_mkdir, 0, dir, dentry, mode);
427}
428EXPORT_SYMBOL(security_path_mkdir);
429
430int security_path_rmdir(struct path *dir, struct dentry *dentry)
431{
432 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
433 return 0;
434 return call_int_hook(path_rmdir, 0, dir, dentry);
435}
436
437int security_path_unlink(struct path *dir, struct dentry *dentry)
438{
439 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
440 return 0;
441 return call_int_hook(path_unlink, 0, dir, dentry);
442}
443EXPORT_SYMBOL(security_path_unlink);
444
445int security_path_symlink(struct path *dir, struct dentry *dentry,
446 const char *old_name)
447{
448 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
449 return 0;
450 return call_int_hook(path_symlink, 0, dir, dentry, old_name);
451}
452
453int security_path_link(struct dentry *old_dentry, struct path *new_dir,
454 struct dentry *new_dentry)
455{
456 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
457 return 0;
458 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
459}
460
461int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
462 struct path *new_dir, struct dentry *new_dentry,
463 unsigned int flags)
464{
465 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
466 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
467 return 0;
468
469 if (flags & RENAME_EXCHANGE) {
470 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
471 old_dir, old_dentry);
472 if (err)
473 return err;
474 }
475
476 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
477 new_dentry);
478}
479EXPORT_SYMBOL(security_path_rename);
480
481int security_path_truncate(struct path *path)
482{
483 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
484 return 0;
485 return call_int_hook(path_truncate, 0, path);
486}
487
488int security_path_chmod(struct path *path, umode_t mode)
489{
490 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
491 return 0;
492 return call_int_hook(path_chmod, 0, path, mode);
493}
494
495int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
496{
497 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
498 return 0;
499 return call_int_hook(path_chown, 0, path, uid, gid);
500}
501
502int security_path_chroot(struct path *path)
503{
504 return call_int_hook(path_chroot, 0, path);
505}
506#endif
507
508int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
509{
510 if (unlikely(IS_PRIVATE(dir)))
511 return 0;
512 return call_int_hook(inode_create, 0, dir, dentry, mode);
513}
514EXPORT_SYMBOL_GPL(security_inode_create);
515
516int security_inode_link(struct dentry *old_dentry, struct inode *dir,
517 struct dentry *new_dentry)
518{
519 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
520 return 0;
521 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
522}
523
524int security_inode_unlink(struct inode *dir, struct dentry *dentry)
525{
526 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
527 return 0;
528 return call_int_hook(inode_unlink, 0, dir, dentry);
529}
530
531int security_inode_symlink(struct inode *dir, struct dentry *dentry,
532 const char *old_name)
533{
534 if (unlikely(IS_PRIVATE(dir)))
535 return 0;
536 return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
537}
538
539int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
540{
541 if (unlikely(IS_PRIVATE(dir)))
542 return 0;
543 return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
544}
545EXPORT_SYMBOL_GPL(security_inode_mkdir);
546
547int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
548{
549 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
550 return 0;
551 return call_int_hook(inode_rmdir, 0, dir, dentry);
552}
553
554int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
555{
556 if (unlikely(IS_PRIVATE(dir)))
557 return 0;
558 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
559}
560
561int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
562 struct inode *new_dir, struct dentry *new_dentry,
563 unsigned int flags)
564{
565 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
566 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
567 return 0;
568
569 if (flags & RENAME_EXCHANGE) {
570 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
571 old_dir, old_dentry);
572 if (err)
573 return err;
574 }
575
576 return call_int_hook(inode_rename, 0, old_dir, old_dentry,
577 new_dir, new_dentry);
578}
579
580int security_inode_readlink(struct dentry *dentry)
581{
582 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
583 return 0;
584 return call_int_hook(inode_readlink, 0, dentry);
585}
586
587int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
588 bool rcu)
589{
590 if (unlikely(IS_PRIVATE(inode)))
591 return 0;
592 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
593}
594
595int security_inode_permission(struct inode *inode, int mask)
596{
597 if (unlikely(IS_PRIVATE(inode)))
598 return 0;
599 return call_int_hook(inode_permission, 0, inode, mask);
600}
601
602int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
603{
604 int ret;
605
606 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
607 return 0;
608 ret = call_int_hook(inode_setattr, 0, dentry, attr);
609 if (ret)
610 return ret;
611 return evm_inode_setattr(dentry, attr);
612}
613EXPORT_SYMBOL_GPL(security_inode_setattr);
614
615int security_inode_getattr(const struct path *path)
616{
617 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
618 return 0;
619 return call_int_hook(inode_getattr, 0, path);
620}
621
622int security_inode_setxattr(struct dentry *dentry, const char *name,
623 const void *value, size_t size, int flags)
624{
625 int ret;
626
627 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
628 return 0;
629 /*
630 * SELinux and Smack integrate the cap call,
631 * so assume that all LSMs supplying this call do so.
632 */
633 ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
634 flags);
635
636 if (ret == 1)
637 ret = cap_inode_setxattr(dentry, name, value, size, flags);
638 if (ret)
639 return ret;
640 ret = ima_inode_setxattr(dentry, name, value, size);
641 if (ret)
642 return ret;
643 return evm_inode_setxattr(dentry, name, value, size);
644}
645
646void security_inode_post_setxattr(struct dentry *dentry, const char *name,
647 const void *value, size_t size, int flags)
648{
649 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
650 return;
651 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
652 evm_inode_post_setxattr(dentry, name, value, size);
653}
654
655int security_inode_getxattr(struct dentry *dentry, const char *name)
656{
657 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
658 return 0;
659 return call_int_hook(inode_getxattr, 0, dentry, name);
660}
661
662int security_inode_listxattr(struct dentry *dentry)
663{
664 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
665 return 0;
666 return call_int_hook(inode_listxattr, 0, dentry);
667}
668
669int security_inode_removexattr(struct dentry *dentry, const char *name)
670{
671 int ret;
672
673 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
674 return 0;
675 /*
676 * SELinux and Smack integrate the cap call,
677 * so assume that all LSMs supplying this call do so.
678 */
679 ret = call_int_hook(inode_removexattr, 1, dentry, name);
680 if (ret == 1)
681 ret = cap_inode_removexattr(dentry, name);
682 if (ret)
683 return ret;
684 ret = ima_inode_removexattr(dentry, name);
685 if (ret)
686 return ret;
687 return evm_inode_removexattr(dentry, name);
688}
689
690int security_inode_need_killpriv(struct dentry *dentry)
691{
692 return call_int_hook(inode_need_killpriv, 0, dentry);
693}
694
695int security_inode_killpriv(struct dentry *dentry)
696{
697 return call_int_hook(inode_killpriv, 0, dentry);
698}
699
700int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
701{
702 if (unlikely(IS_PRIVATE(inode)))
703 return -EOPNOTSUPP;
704 return call_int_hook(inode_getsecurity, -EOPNOTSUPP, inode, name,
705 buffer, alloc);
706}
707
708int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
709{
710 if (unlikely(IS_PRIVATE(inode)))
711 return -EOPNOTSUPP;
712 return call_int_hook(inode_setsecurity, -EOPNOTSUPP, inode, name,
713 value, size, flags);
714}
715
716int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
717{
718 if (unlikely(IS_PRIVATE(inode)))
719 return 0;
720 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
721}
722EXPORT_SYMBOL(security_inode_listsecurity);
723
724void security_inode_getsecid(const struct inode *inode, u32 *secid)
725{
726 call_void_hook(inode_getsecid, inode, secid);
727}
728
729int security_file_permission(struct file *file, int mask)
730{
731 int ret;
732
733 ret = call_int_hook(file_permission, 0, file, mask);
734 if (ret)
735 return ret;
736
737 return fsnotify_perm(file, mask);
738}
739
740int security_file_alloc(struct file *file)
741{
742 return call_int_hook(file_alloc_security, 0, file);
743}
744
745void security_file_free(struct file *file)
746{
747 call_void_hook(file_free_security, file);
748}
749
750int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
751{
752 return call_int_hook(file_ioctl, 0, file, cmd, arg);
753}
754
755static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
756{
757 /*
758 * Does we have PROT_READ and does the application expect
759 * it to imply PROT_EXEC? If not, nothing to talk about...
760 */
761 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
762 return prot;
763 if (!(current->personality & READ_IMPLIES_EXEC))
764 return prot;
765 /*
766 * if that's an anonymous mapping, let it.
767 */
768 if (!file)
769 return prot | PROT_EXEC;
770 /*
771 * ditto if it's not on noexec mount, except that on !MMU we need
772 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
773 */
774 if (!path_noexec(&file->f_path)) {
775#ifndef CONFIG_MMU
776 if (file->f_op->mmap_capabilities) {
777 unsigned caps = file->f_op->mmap_capabilities(file);
778 if (!(caps & NOMMU_MAP_EXEC))
779 return prot;
780 }
781#endif
782 return prot | PROT_EXEC;
783 }
784 /* anything on noexec mount won't get PROT_EXEC */
785 return prot;
786}
787
788int security_mmap_file(struct file *file, unsigned long prot,
789 unsigned long flags)
790{
791 int ret;
792 ret = call_int_hook(mmap_file, 0, file, prot,
793 mmap_prot(file, prot), flags);
794 if (ret)
795 return ret;
796 return ima_file_mmap(file, prot);
797}
798
799int security_mmap_addr(unsigned long addr)
800{
801 return call_int_hook(mmap_addr, 0, addr);
802}
803
804int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
805 unsigned long prot)
806{
807 return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
808}
809
810int security_file_lock(struct file *file, unsigned int cmd)
811{
812 return call_int_hook(file_lock, 0, file, cmd);
813}
814
815int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
816{
817 return call_int_hook(file_fcntl, 0, file, cmd, arg);
818}
819
820void security_file_set_fowner(struct file *file)
821{
822 call_void_hook(file_set_fowner, file);
823}
824
825int security_file_send_sigiotask(struct task_struct *tsk,
826 struct fown_struct *fown, int sig)
827{
828 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
829}
830
831int security_file_receive(struct file *file)
832{
833 return call_int_hook(file_receive, 0, file);
834}
835
836int security_file_open(struct file *file, const struct cred *cred)
837{
838 int ret;
839
840 ret = call_int_hook(file_open, 0, file, cred);
841 if (ret)
842 return ret;
843
844 return fsnotify_perm(file, MAY_OPEN);
845}
846
847int security_task_create(unsigned long clone_flags)
848{
849 return call_int_hook(task_create, 0, clone_flags);
850}
851
852void security_task_free(struct task_struct *task)
853{
854 call_void_hook(task_free, task);
855}
856
857int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
858{
859 return call_int_hook(cred_alloc_blank, 0, cred, gfp);
860}
861
862void security_cred_free(struct cred *cred)
863{
864 call_void_hook(cred_free, cred);
865}
866
867int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
868{
869 return call_int_hook(cred_prepare, 0, new, old, gfp);
870}
871
872void security_transfer_creds(struct cred *new, const struct cred *old)
873{
874 call_void_hook(cred_transfer, new, old);
875}
876
877int security_kernel_act_as(struct cred *new, u32 secid)
878{
879 return call_int_hook(kernel_act_as, 0, new, secid);
880}
881
882int security_kernel_create_files_as(struct cred *new, struct inode *inode)
883{
884 return call_int_hook(kernel_create_files_as, 0, new, inode);
885}
886
887int security_kernel_fw_from_file(struct file *file, char *buf, size_t size)
888{
889 int ret;
890
891 ret = call_int_hook(kernel_fw_from_file, 0, file, buf, size);
892 if (ret)
893 return ret;
894 return ima_fw_from_file(file, buf, size);
895}
896EXPORT_SYMBOL_GPL(security_kernel_fw_from_file);
897
898int security_kernel_module_request(char *kmod_name)
899{
900 return call_int_hook(kernel_module_request, 0, kmod_name);
901}
902
903int security_kernel_module_from_file(struct file *file)
904{
905 int ret;
906
907 ret = call_int_hook(kernel_module_from_file, 0, file);
908 if (ret)
909 return ret;
910 return ima_module_check(file);
911}
912
913int security_task_fix_setuid(struct cred *new, const struct cred *old,
914 int flags)
915{
916 return call_int_hook(task_fix_setuid, 0, new, old, flags);
917}
918
919int security_task_setpgid(struct task_struct *p, pid_t pgid)
920{
921 return call_int_hook(task_setpgid, 0, p, pgid);
922}
923
924int security_task_getpgid(struct task_struct *p)
925{
926 return call_int_hook(task_getpgid, 0, p);
927}
928
929int security_task_getsid(struct task_struct *p)
930{
931 return call_int_hook(task_getsid, 0, p);
932}
933
934void security_task_getsecid(struct task_struct *p, u32 *secid)
935{
936 *secid = 0;
937 call_void_hook(task_getsecid, p, secid);
938}
939EXPORT_SYMBOL(security_task_getsecid);
940
941int security_task_setnice(struct task_struct *p, int nice)
942{
943 return call_int_hook(task_setnice, 0, p, nice);
944}
945
946int security_task_setioprio(struct task_struct *p, int ioprio)
947{
948 return call_int_hook(task_setioprio, 0, p, ioprio);
949}
950
951int security_task_getioprio(struct task_struct *p)
952{
953 return call_int_hook(task_getioprio, 0, p);
954}
955
956int security_task_setrlimit(struct task_struct *p, unsigned int resource,
957 struct rlimit *new_rlim)
958{
959 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
960}
961
962int security_task_setscheduler(struct task_struct *p)
963{
964 return call_int_hook(task_setscheduler, 0, p);
965}
966
967int security_task_getscheduler(struct task_struct *p)
968{
969 return call_int_hook(task_getscheduler, 0, p);
970}
971
972int security_task_movememory(struct task_struct *p)
973{
974 return call_int_hook(task_movememory, 0, p);
975}
976
977int security_task_kill(struct task_struct *p, struct siginfo *info,
978 int sig, u32 secid)
979{
980 return call_int_hook(task_kill, 0, p, info, sig, secid);
981}
982
983int security_task_wait(struct task_struct *p)
984{
985 return call_int_hook(task_wait, 0, p);
986}
987
988int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
989 unsigned long arg4, unsigned long arg5)
990{
991 int thisrc;
992 int rc = -ENOSYS;
993 struct security_hook_list *hp;
994
995 list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
996 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
997 if (thisrc != -ENOSYS) {
998 rc = thisrc;
999 if (thisrc != 0)
1000 break;
1001 }
1002 }
1003 return rc;
1004}
1005
1006void security_task_to_inode(struct task_struct *p, struct inode *inode)
1007{
1008 call_void_hook(task_to_inode, p, inode);
1009}
1010
1011int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1012{
1013 return call_int_hook(ipc_permission, 0, ipcp, flag);
1014}
1015
1016void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1017{
1018 *secid = 0;
1019 call_void_hook(ipc_getsecid, ipcp, secid);
1020}
1021
1022int security_msg_msg_alloc(struct msg_msg *msg)
1023{
1024 return call_int_hook(msg_msg_alloc_security, 0, msg);
1025}
1026
1027void security_msg_msg_free(struct msg_msg *msg)
1028{
1029 call_void_hook(msg_msg_free_security, msg);
1030}
1031
1032int security_msg_queue_alloc(struct msg_queue *msq)
1033{
1034 return call_int_hook(msg_queue_alloc_security, 0, msq);
1035}
1036
1037void security_msg_queue_free(struct msg_queue *msq)
1038{
1039 call_void_hook(msg_queue_free_security, msq);
1040}
1041
1042int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
1043{
1044 return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1045}
1046
1047int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1048{
1049 return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1050}
1051
1052int security_msg_queue_msgsnd(struct msg_queue *msq,
1053 struct msg_msg *msg, int msqflg)
1054{
1055 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1056}
1057
1058int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1059 struct task_struct *target, long type, int mode)
1060{
1061 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1062}
1063
1064int security_shm_alloc(struct shmid_kernel *shp)
1065{
1066 return call_int_hook(shm_alloc_security, 0, shp);
1067}
1068
1069void security_shm_free(struct shmid_kernel *shp)
1070{
1071 call_void_hook(shm_free_security, shp);
1072}
1073
1074int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1075{
1076 return call_int_hook(shm_associate, 0, shp, shmflg);
1077}
1078
1079int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1080{
1081 return call_int_hook(shm_shmctl, 0, shp, cmd);
1082}
1083
1084int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1085{
1086 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1087}
1088
1089int security_sem_alloc(struct sem_array *sma)
1090{
1091 return call_int_hook(sem_alloc_security, 0, sma);
1092}
1093
1094void security_sem_free(struct sem_array *sma)
1095{
1096 call_void_hook(sem_free_security, sma);
1097}
1098
1099int security_sem_associate(struct sem_array *sma, int semflg)
1100{
1101 return call_int_hook(sem_associate, 0, sma, semflg);
1102}
1103
1104int security_sem_semctl(struct sem_array *sma, int cmd)
1105{
1106 return call_int_hook(sem_semctl, 0, sma, cmd);
1107}
1108
1109int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1110 unsigned nsops, int alter)
1111{
1112 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1113}
1114
1115void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1116{
1117 if (unlikely(inode && IS_PRIVATE(inode)))
1118 return;
1119 call_void_hook(d_instantiate, dentry, inode);
1120}
1121EXPORT_SYMBOL(security_d_instantiate);
1122
1123int security_getprocattr(struct task_struct *p, char *name, char **value)
1124{
1125 return call_int_hook(getprocattr, -EINVAL, p, name, value);
1126}
1127
1128int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1129{
1130 return call_int_hook(setprocattr, -EINVAL, p, name, value, size);
1131}
1132
1133int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1134{
1135 return call_int_hook(netlink_send, 0, sk, skb);
1136}
1137
1138int security_ismaclabel(const char *name)
1139{
1140 return call_int_hook(ismaclabel, 0, name);
1141}
1142EXPORT_SYMBOL(security_ismaclabel);
1143
1144int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1145{
1146 return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1147 seclen);
1148}
1149EXPORT_SYMBOL(security_secid_to_secctx);
1150
1151int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1152{
1153 *secid = 0;
1154 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1155}
1156EXPORT_SYMBOL(security_secctx_to_secid);
1157
1158void security_release_secctx(char *secdata, u32 seclen)
1159{
1160 call_void_hook(release_secctx, secdata, seclen);
1161}
1162EXPORT_SYMBOL(security_release_secctx);
1163
1164int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1165{
1166 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1167}
1168EXPORT_SYMBOL(security_inode_notifysecctx);
1169
1170int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1171{
1172 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1173}
1174EXPORT_SYMBOL(security_inode_setsecctx);
1175
1176int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1177{
1178 return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1179}
1180EXPORT_SYMBOL(security_inode_getsecctx);
1181
1182#ifdef CONFIG_SECURITY_NETWORK
1183
1184int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1185{
1186 return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1187}
1188EXPORT_SYMBOL(security_unix_stream_connect);
1189
1190int security_unix_may_send(struct socket *sock, struct socket *other)
1191{
1192 return call_int_hook(unix_may_send, 0, sock, other);
1193}
1194EXPORT_SYMBOL(security_unix_may_send);
1195
1196int security_socket_create(int family, int type, int protocol, int kern)
1197{
1198 return call_int_hook(socket_create, 0, family, type, protocol, kern);
1199}
1200
1201int security_socket_post_create(struct socket *sock, int family,
1202 int type, int protocol, int kern)
1203{
1204 return call_int_hook(socket_post_create, 0, sock, family, type,
1205 protocol, kern);
1206}
1207
1208int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1209{
1210 return call_int_hook(socket_bind, 0, sock, address, addrlen);
1211}
1212
1213int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1214{
1215 return call_int_hook(socket_connect, 0, sock, address, addrlen);
1216}
1217
1218int security_socket_listen(struct socket *sock, int backlog)
1219{
1220 return call_int_hook(socket_listen, 0, sock, backlog);
1221}
1222
1223int security_socket_accept(struct socket *sock, struct socket *newsock)
1224{
1225 return call_int_hook(socket_accept, 0, sock, newsock);
1226}
1227
1228int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1229{
1230 return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1231}
1232
1233int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1234 int size, int flags)
1235{
1236 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1237}
1238
1239int security_socket_getsockname(struct socket *sock)
1240{
1241 return call_int_hook(socket_getsockname, 0, sock);
1242}
1243
1244int security_socket_getpeername(struct socket *sock)
1245{
1246 return call_int_hook(socket_getpeername, 0, sock);
1247}
1248
1249int security_socket_getsockopt(struct socket *sock, int level, int optname)
1250{
1251 return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1252}
1253
1254int security_socket_setsockopt(struct socket *sock, int level, int optname)
1255{
1256 return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1257}
1258
1259int security_socket_shutdown(struct socket *sock, int how)
1260{
1261 return call_int_hook(socket_shutdown, 0, sock, how);
1262}
1263
1264int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1265{
1266 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1267}
1268EXPORT_SYMBOL(security_sock_rcv_skb);
1269
1270int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1271 int __user *optlen, unsigned len)
1272{
1273 return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1274 optval, optlen, len);
1275}
1276
1277int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1278{
1279 return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1280 skb, secid);
1281}
1282EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1283
1284int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1285{
1286 return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1287}
1288
1289void security_sk_free(struct sock *sk)
1290{
1291 call_void_hook(sk_free_security, sk);
1292}
1293
1294void security_sk_clone(const struct sock *sk, struct sock *newsk)
1295{
1296 call_void_hook(sk_clone_security, sk, newsk);
1297}
1298EXPORT_SYMBOL(security_sk_clone);
1299
1300void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1301{
1302 call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1303}
1304EXPORT_SYMBOL(security_sk_classify_flow);
1305
1306void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1307{
1308 call_void_hook(req_classify_flow, req, fl);
1309}
1310EXPORT_SYMBOL(security_req_classify_flow);
1311
1312void security_sock_graft(struct sock *sk, struct socket *parent)
1313{
1314 call_void_hook(sock_graft, sk, parent);
1315}
1316EXPORT_SYMBOL(security_sock_graft);
1317
1318int security_inet_conn_request(struct sock *sk,
1319 struct sk_buff *skb, struct request_sock *req)
1320{
1321 return call_int_hook(inet_conn_request, 0, sk, skb, req);
1322}
1323EXPORT_SYMBOL(security_inet_conn_request);
1324
1325void security_inet_csk_clone(struct sock *newsk,
1326 const struct request_sock *req)
1327{
1328 call_void_hook(inet_csk_clone, newsk, req);
1329}
1330
1331void security_inet_conn_established(struct sock *sk,
1332 struct sk_buff *skb)
1333{
1334 call_void_hook(inet_conn_established, sk, skb);
1335}
1336
1337int security_secmark_relabel_packet(u32 secid)
1338{
1339 return call_int_hook(secmark_relabel_packet, 0, secid);
1340}
1341EXPORT_SYMBOL(security_secmark_relabel_packet);
1342
1343void security_secmark_refcount_inc(void)
1344{
1345 call_void_hook(secmark_refcount_inc);
1346}
1347EXPORT_SYMBOL(security_secmark_refcount_inc);
1348
1349void security_secmark_refcount_dec(void)
1350{
1351 call_void_hook(secmark_refcount_dec);
1352}
1353EXPORT_SYMBOL(security_secmark_refcount_dec);
1354
1355int security_tun_dev_alloc_security(void **security)
1356{
1357 return call_int_hook(tun_dev_alloc_security, 0, security);
1358}
1359EXPORT_SYMBOL(security_tun_dev_alloc_security);
1360
1361void security_tun_dev_free_security(void *security)
1362{
1363 call_void_hook(tun_dev_free_security, security);
1364}
1365EXPORT_SYMBOL(security_tun_dev_free_security);
1366
1367int security_tun_dev_create(void)
1368{
1369 return call_int_hook(tun_dev_create, 0);
1370}
1371EXPORT_SYMBOL(security_tun_dev_create);
1372
1373int security_tun_dev_attach_queue(void *security)
1374{
1375 return call_int_hook(tun_dev_attach_queue, 0, security);
1376}
1377EXPORT_SYMBOL(security_tun_dev_attach_queue);
1378
1379int security_tun_dev_attach(struct sock *sk, void *security)
1380{
1381 return call_int_hook(tun_dev_attach, 0, sk, security);
1382}
1383EXPORT_SYMBOL(security_tun_dev_attach);
1384
1385int security_tun_dev_open(void *security)
1386{
1387 return call_int_hook(tun_dev_open, 0, security);
1388}
1389EXPORT_SYMBOL(security_tun_dev_open);
1390
1391#endif /* CONFIG_SECURITY_NETWORK */
1392
1393#ifdef CONFIG_SECURITY_NETWORK_XFRM
1394
1395int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1396 struct xfrm_user_sec_ctx *sec_ctx,
1397 gfp_t gfp)
1398{
1399 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1400}
1401EXPORT_SYMBOL(security_xfrm_policy_alloc);
1402
1403int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1404 struct xfrm_sec_ctx **new_ctxp)
1405{
1406 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1407}
1408
1409void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1410{
1411 call_void_hook(xfrm_policy_free_security, ctx);
1412}
1413EXPORT_SYMBOL(security_xfrm_policy_free);
1414
1415int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1416{
1417 return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1418}
1419
1420int security_xfrm_state_alloc(struct xfrm_state *x,
1421 struct xfrm_user_sec_ctx *sec_ctx)
1422{
1423 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1424}
1425EXPORT_SYMBOL(security_xfrm_state_alloc);
1426
1427int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1428 struct xfrm_sec_ctx *polsec, u32 secid)
1429{
1430 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1431}
1432
1433int security_xfrm_state_delete(struct xfrm_state *x)
1434{
1435 return call_int_hook(xfrm_state_delete_security, 0, x);
1436}
1437EXPORT_SYMBOL(security_xfrm_state_delete);
1438
1439void security_xfrm_state_free(struct xfrm_state *x)
1440{
1441 call_void_hook(xfrm_state_free_security, x);
1442}
1443
1444int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1445{
1446 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1447}
1448
1449int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1450 struct xfrm_policy *xp,
1451 const struct flowi *fl)
1452{
1453 struct security_hook_list *hp;
1454 int rc = 1;
1455
1456 /*
1457 * Since this function is expected to return 0 or 1, the judgment
1458 * becomes difficult if multiple LSMs supply this call. Fortunately,
1459 * we can use the first LSM's judgment because currently only SELinux
1460 * supplies this call.
1461 *
1462 * For speed optimization, we explicitly break the loop rather than
1463 * using the macro
1464 */
1465 list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1466 list) {
1467 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1468 break;
1469 }
1470 return rc;
1471}
1472
1473int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1474{
1475 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1476}
1477
1478void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1479{
1480 int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1481 0);
1482
1483 BUG_ON(rc);
1484}
1485EXPORT_SYMBOL(security_skb_classify_flow);
1486
1487#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1488
1489#ifdef CONFIG_KEYS
1490
1491int security_key_alloc(struct key *key, const struct cred *cred,
1492 unsigned long flags)
1493{
1494 return call_int_hook(key_alloc, 0, key, cred, flags);
1495}
1496
1497void security_key_free(struct key *key)
1498{
1499 call_void_hook(key_free, key);
1500}
1501
1502int security_key_permission(key_ref_t key_ref,
1503 const struct cred *cred, unsigned perm)
1504{
1505 return call_int_hook(key_permission, 0, key_ref, cred, perm);
1506}
1507
1508int security_key_getsecurity(struct key *key, char **_buffer)
1509{
1510 *_buffer = NULL;
1511 return call_int_hook(key_getsecurity, 0, key, _buffer);
1512}
1513
1514#endif /* CONFIG_KEYS */
1515
1516#ifdef CONFIG_AUDIT
1517
1518int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1519{
1520 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1521}
1522
1523int security_audit_rule_known(struct audit_krule *krule)
1524{
1525 return call_int_hook(audit_rule_known, 0, krule);
1526}
1527
1528void security_audit_rule_free(void *lsmrule)
1529{
1530 call_void_hook(audit_rule_free, lsmrule);
1531}
1532
1533int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1534 struct audit_context *actx)
1535{
1536 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1537 actx);
1538}
1539#endif /* CONFIG_AUDIT */
1540
1541struct security_hook_heads security_hook_heads = {
1542 .binder_set_context_mgr =
1543 LIST_HEAD_INIT(security_hook_heads.binder_set_context_mgr),
1544 .binder_transaction =
1545 LIST_HEAD_INIT(security_hook_heads.binder_transaction),
1546 .binder_transfer_binder =
1547 LIST_HEAD_INIT(security_hook_heads.binder_transfer_binder),
1548 .binder_transfer_file =
1549 LIST_HEAD_INIT(security_hook_heads.binder_transfer_file),
1550
1551 .ptrace_access_check =
1552 LIST_HEAD_INIT(security_hook_heads.ptrace_access_check),
1553 .ptrace_traceme =
1554 LIST_HEAD_INIT(security_hook_heads.ptrace_traceme),
1555 .capget = LIST_HEAD_INIT(security_hook_heads.capget),
1556 .capset = LIST_HEAD_INIT(security_hook_heads.capset),
1557 .capable = LIST_HEAD_INIT(security_hook_heads.capable),
1558 .quotactl = LIST_HEAD_INIT(security_hook_heads.quotactl),
1559 .quota_on = LIST_HEAD_INIT(security_hook_heads.quota_on),
1560 .syslog = LIST_HEAD_INIT(security_hook_heads.syslog),
1561 .settime = LIST_HEAD_INIT(security_hook_heads.settime),
1562 .vm_enough_memory =
1563 LIST_HEAD_INIT(security_hook_heads.vm_enough_memory),
1564 .bprm_set_creds =
1565 LIST_HEAD_INIT(security_hook_heads.bprm_set_creds),
1566 .bprm_check_security =
1567 LIST_HEAD_INIT(security_hook_heads.bprm_check_security),
1568 .bprm_secureexec =
1569 LIST_HEAD_INIT(security_hook_heads.bprm_secureexec),
1570 .bprm_committing_creds =
1571 LIST_HEAD_INIT(security_hook_heads.bprm_committing_creds),
1572 .bprm_committed_creds =
1573 LIST_HEAD_INIT(security_hook_heads.bprm_committed_creds),
1574 .sb_alloc_security =
1575 LIST_HEAD_INIT(security_hook_heads.sb_alloc_security),
1576 .sb_free_security =
1577 LIST_HEAD_INIT(security_hook_heads.sb_free_security),
1578 .sb_copy_data = LIST_HEAD_INIT(security_hook_heads.sb_copy_data),
1579 .sb_remount = LIST_HEAD_INIT(security_hook_heads.sb_remount),
1580 .sb_kern_mount =
1581 LIST_HEAD_INIT(security_hook_heads.sb_kern_mount),
1582 .sb_show_options =
1583 LIST_HEAD_INIT(security_hook_heads.sb_show_options),
1584 .sb_statfs = LIST_HEAD_INIT(security_hook_heads.sb_statfs),
1585 .sb_mount = LIST_HEAD_INIT(security_hook_heads.sb_mount),
1586 .sb_umount = LIST_HEAD_INIT(security_hook_heads.sb_umount),
1587 .sb_pivotroot = LIST_HEAD_INIT(security_hook_heads.sb_pivotroot),
1588 .sb_set_mnt_opts =
1589 LIST_HEAD_INIT(security_hook_heads.sb_set_mnt_opts),
1590 .sb_clone_mnt_opts =
1591 LIST_HEAD_INIT(security_hook_heads.sb_clone_mnt_opts),
1592 .sb_parse_opts_str =
1593 LIST_HEAD_INIT(security_hook_heads.sb_parse_opts_str),
1594 .dentry_init_security =
1595 LIST_HEAD_INIT(security_hook_heads.dentry_init_security),
1596#ifdef CONFIG_SECURITY_PATH
1597 .path_unlink = LIST_HEAD_INIT(security_hook_heads.path_unlink),
1598 .path_mkdir = LIST_HEAD_INIT(security_hook_heads.path_mkdir),
1599 .path_rmdir = LIST_HEAD_INIT(security_hook_heads.path_rmdir),
1600 .path_mknod = LIST_HEAD_INIT(security_hook_heads.path_mknod),
1601 .path_truncate =
1602 LIST_HEAD_INIT(security_hook_heads.path_truncate),
1603 .path_symlink = LIST_HEAD_INIT(security_hook_heads.path_symlink),
1604 .path_link = LIST_HEAD_INIT(security_hook_heads.path_link),
1605 .path_rename = LIST_HEAD_INIT(security_hook_heads.path_rename),
1606 .path_chmod = LIST_HEAD_INIT(security_hook_heads.path_chmod),
1607 .path_chown = LIST_HEAD_INIT(security_hook_heads.path_chown),
1608 .path_chroot = LIST_HEAD_INIT(security_hook_heads.path_chroot),
1609#endif
1610 .inode_alloc_security =
1611 LIST_HEAD_INIT(security_hook_heads.inode_alloc_security),
1612 .inode_free_security =
1613 LIST_HEAD_INIT(security_hook_heads.inode_free_security),
1614 .inode_init_security =
1615 LIST_HEAD_INIT(security_hook_heads.inode_init_security),
1616 .inode_create = LIST_HEAD_INIT(security_hook_heads.inode_create),
1617 .inode_link = LIST_HEAD_INIT(security_hook_heads.inode_link),
1618 .inode_unlink = LIST_HEAD_INIT(security_hook_heads.inode_unlink),
1619 .inode_symlink =
1620 LIST_HEAD_INIT(security_hook_heads.inode_symlink),
1621 .inode_mkdir = LIST_HEAD_INIT(security_hook_heads.inode_mkdir),
1622 .inode_rmdir = LIST_HEAD_INIT(security_hook_heads.inode_rmdir),
1623 .inode_mknod = LIST_HEAD_INIT(security_hook_heads.inode_mknod),
1624 .inode_rename = LIST_HEAD_INIT(security_hook_heads.inode_rename),
1625 .inode_readlink =
1626 LIST_HEAD_INIT(security_hook_heads.inode_readlink),
1627 .inode_follow_link =
1628 LIST_HEAD_INIT(security_hook_heads.inode_follow_link),
1629 .inode_permission =
1630 LIST_HEAD_INIT(security_hook_heads.inode_permission),
1631 .inode_setattr =
1632 LIST_HEAD_INIT(security_hook_heads.inode_setattr),
1633 .inode_getattr =
1634 LIST_HEAD_INIT(security_hook_heads.inode_getattr),
1635 .inode_setxattr =
1636 LIST_HEAD_INIT(security_hook_heads.inode_setxattr),
1637 .inode_post_setxattr =
1638 LIST_HEAD_INIT(security_hook_heads.inode_post_setxattr),
1639 .inode_getxattr =
1640 LIST_HEAD_INIT(security_hook_heads.inode_getxattr),
1641 .inode_listxattr =
1642 LIST_HEAD_INIT(security_hook_heads.inode_listxattr),
1643 .inode_removexattr =
1644 LIST_HEAD_INIT(security_hook_heads.inode_removexattr),
1645 .inode_need_killpriv =
1646 LIST_HEAD_INIT(security_hook_heads.inode_need_killpriv),
1647 .inode_killpriv =
1648 LIST_HEAD_INIT(security_hook_heads.inode_killpriv),
1649 .inode_getsecurity =
1650 LIST_HEAD_INIT(security_hook_heads.inode_getsecurity),
1651 .inode_setsecurity =
1652 LIST_HEAD_INIT(security_hook_heads.inode_setsecurity),
1653 .inode_listsecurity =
1654 LIST_HEAD_INIT(security_hook_heads.inode_listsecurity),
1655 .inode_getsecid =
1656 LIST_HEAD_INIT(security_hook_heads.inode_getsecid),
1657 .file_permission =
1658 LIST_HEAD_INIT(security_hook_heads.file_permission),
1659 .file_alloc_security =
1660 LIST_HEAD_INIT(security_hook_heads.file_alloc_security),
1661 .file_free_security =
1662 LIST_HEAD_INIT(security_hook_heads.file_free_security),
1663 .file_ioctl = LIST_HEAD_INIT(security_hook_heads.file_ioctl),
1664 .mmap_addr = LIST_HEAD_INIT(security_hook_heads.mmap_addr),
1665 .mmap_file = LIST_HEAD_INIT(security_hook_heads.mmap_file),
1666 .file_mprotect =
1667 LIST_HEAD_INIT(security_hook_heads.file_mprotect),
1668 .file_lock = LIST_HEAD_INIT(security_hook_heads.file_lock),
1669 .file_fcntl = LIST_HEAD_INIT(security_hook_heads.file_fcntl),
1670 .file_set_fowner =
1671 LIST_HEAD_INIT(security_hook_heads.file_set_fowner),
1672 .file_send_sigiotask =
1673 LIST_HEAD_INIT(security_hook_heads.file_send_sigiotask),
1674 .file_receive = LIST_HEAD_INIT(security_hook_heads.file_receive),
1675 .file_open = LIST_HEAD_INIT(security_hook_heads.file_open),
1676 .task_create = LIST_HEAD_INIT(security_hook_heads.task_create),
1677 .task_free = LIST_HEAD_INIT(security_hook_heads.task_free),
1678 .cred_alloc_blank =
1679 LIST_HEAD_INIT(security_hook_heads.cred_alloc_blank),
1680 .cred_free = LIST_HEAD_INIT(security_hook_heads.cred_free),
1681 .cred_prepare = LIST_HEAD_INIT(security_hook_heads.cred_prepare),
1682 .cred_transfer =
1683 LIST_HEAD_INIT(security_hook_heads.cred_transfer),
1684 .kernel_act_as =
1685 LIST_HEAD_INIT(security_hook_heads.kernel_act_as),
1686 .kernel_create_files_as =
1687 LIST_HEAD_INIT(security_hook_heads.kernel_create_files_as),
1688 .kernel_fw_from_file =
1689 LIST_HEAD_INIT(security_hook_heads.kernel_fw_from_file),
1690 .kernel_module_request =
1691 LIST_HEAD_INIT(security_hook_heads.kernel_module_request),
1692 .kernel_module_from_file =
1693 LIST_HEAD_INIT(security_hook_heads.kernel_module_from_file),
1694 .task_fix_setuid =
1695 LIST_HEAD_INIT(security_hook_heads.task_fix_setuid),
1696 .task_setpgid = LIST_HEAD_INIT(security_hook_heads.task_setpgid),
1697 .task_getpgid = LIST_HEAD_INIT(security_hook_heads.task_getpgid),
1698 .task_getsid = LIST_HEAD_INIT(security_hook_heads.task_getsid),
1699 .task_getsecid =
1700 LIST_HEAD_INIT(security_hook_heads.task_getsecid),
1701 .task_setnice = LIST_HEAD_INIT(security_hook_heads.task_setnice),
1702 .task_setioprio =
1703 LIST_HEAD_INIT(security_hook_heads.task_setioprio),
1704 .task_getioprio =
1705 LIST_HEAD_INIT(security_hook_heads.task_getioprio),
1706 .task_setrlimit =
1707 LIST_HEAD_INIT(security_hook_heads.task_setrlimit),
1708 .task_setscheduler =
1709 LIST_HEAD_INIT(security_hook_heads.task_setscheduler),
1710 .task_getscheduler =
1711 LIST_HEAD_INIT(security_hook_heads.task_getscheduler),
1712 .task_movememory =
1713 LIST_HEAD_INIT(security_hook_heads.task_movememory),
1714 .task_kill = LIST_HEAD_INIT(security_hook_heads.task_kill),
1715 .task_wait = LIST_HEAD_INIT(security_hook_heads.task_wait),
1716 .task_prctl = LIST_HEAD_INIT(security_hook_heads.task_prctl),
1717 .task_to_inode =
1718 LIST_HEAD_INIT(security_hook_heads.task_to_inode),
1719 .ipc_permission =
1720 LIST_HEAD_INIT(security_hook_heads.ipc_permission),
1721 .ipc_getsecid = LIST_HEAD_INIT(security_hook_heads.ipc_getsecid),
1722 .msg_msg_alloc_security =
1723 LIST_HEAD_INIT(security_hook_heads.msg_msg_alloc_security),
1724 .msg_msg_free_security =
1725 LIST_HEAD_INIT(security_hook_heads.msg_msg_free_security),
1726 .msg_queue_alloc_security =
1727 LIST_HEAD_INIT(security_hook_heads.msg_queue_alloc_security),
1728 .msg_queue_free_security =
1729 LIST_HEAD_INIT(security_hook_heads.msg_queue_free_security),
1730 .msg_queue_associate =
1731 LIST_HEAD_INIT(security_hook_heads.msg_queue_associate),
1732 .msg_queue_msgctl =
1733 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgctl),
1734 .msg_queue_msgsnd =
1735 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgsnd),
1736 .msg_queue_msgrcv =
1737 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgrcv),
1738 .shm_alloc_security =
1739 LIST_HEAD_INIT(security_hook_heads.shm_alloc_security),
1740 .shm_free_security =
1741 LIST_HEAD_INIT(security_hook_heads.shm_free_security),
1742 .shm_associate =
1743 LIST_HEAD_INIT(security_hook_heads.shm_associate),
1744 .shm_shmctl = LIST_HEAD_INIT(security_hook_heads.shm_shmctl),
1745 .shm_shmat = LIST_HEAD_INIT(security_hook_heads.shm_shmat),
1746 .sem_alloc_security =
1747 LIST_HEAD_INIT(security_hook_heads.sem_alloc_security),
1748 .sem_free_security =
1749 LIST_HEAD_INIT(security_hook_heads.sem_free_security),
1750 .sem_associate =
1751 LIST_HEAD_INIT(security_hook_heads.sem_associate),
1752 .sem_semctl = LIST_HEAD_INIT(security_hook_heads.sem_semctl),
1753 .sem_semop = LIST_HEAD_INIT(security_hook_heads.sem_semop),
1754 .netlink_send = LIST_HEAD_INIT(security_hook_heads.netlink_send),
1755 .d_instantiate =
1756 LIST_HEAD_INIT(security_hook_heads.d_instantiate),
1757 .getprocattr = LIST_HEAD_INIT(security_hook_heads.getprocattr),
1758 .setprocattr = LIST_HEAD_INIT(security_hook_heads.setprocattr),
1759 .ismaclabel = LIST_HEAD_INIT(security_hook_heads.ismaclabel),
1760 .secid_to_secctx =
1761 LIST_HEAD_INIT(security_hook_heads.secid_to_secctx),
1762 .secctx_to_secid =
1763 LIST_HEAD_INIT(security_hook_heads.secctx_to_secid),
1764 .release_secctx =
1765 LIST_HEAD_INIT(security_hook_heads.release_secctx),
1766 .inode_notifysecctx =
1767 LIST_HEAD_INIT(security_hook_heads.inode_notifysecctx),
1768 .inode_setsecctx =
1769 LIST_HEAD_INIT(security_hook_heads.inode_setsecctx),
1770 .inode_getsecctx =
1771 LIST_HEAD_INIT(security_hook_heads.inode_getsecctx),
1772#ifdef CONFIG_SECURITY_NETWORK
1773 .unix_stream_connect =
1774 LIST_HEAD_INIT(security_hook_heads.unix_stream_connect),
1775 .unix_may_send =
1776 LIST_HEAD_INIT(security_hook_heads.unix_may_send),
1777 .socket_create =
1778 LIST_HEAD_INIT(security_hook_heads.socket_create),
1779 .socket_post_create =
1780 LIST_HEAD_INIT(security_hook_heads.socket_post_create),
1781 .socket_bind = LIST_HEAD_INIT(security_hook_heads.socket_bind),
1782 .socket_connect =
1783 LIST_HEAD_INIT(security_hook_heads.socket_connect),
1784 .socket_listen =
1785 LIST_HEAD_INIT(security_hook_heads.socket_listen),
1786 .socket_accept =
1787 LIST_HEAD_INIT(security_hook_heads.socket_accept),
1788 .socket_sendmsg =
1789 LIST_HEAD_INIT(security_hook_heads.socket_sendmsg),
1790 .socket_recvmsg =
1791 LIST_HEAD_INIT(security_hook_heads.socket_recvmsg),
1792 .socket_getsockname =
1793 LIST_HEAD_INIT(security_hook_heads.socket_getsockname),
1794 .socket_getpeername =
1795 LIST_HEAD_INIT(security_hook_heads.socket_getpeername),
1796 .socket_getsockopt =
1797 LIST_HEAD_INIT(security_hook_heads.socket_getsockopt),
1798 .socket_setsockopt =
1799 LIST_HEAD_INIT(security_hook_heads.socket_setsockopt),
1800 .socket_shutdown =
1801 LIST_HEAD_INIT(security_hook_heads.socket_shutdown),
1802 .socket_sock_rcv_skb =
1803 LIST_HEAD_INIT(security_hook_heads.socket_sock_rcv_skb),
1804 .socket_getpeersec_stream =
1805 LIST_HEAD_INIT(security_hook_heads.socket_getpeersec_stream),
1806 .socket_getpeersec_dgram =
1807 LIST_HEAD_INIT(security_hook_heads.socket_getpeersec_dgram),
1808 .sk_alloc_security =
1809 LIST_HEAD_INIT(security_hook_heads.sk_alloc_security),
1810 .sk_free_security =
1811 LIST_HEAD_INIT(security_hook_heads.sk_free_security),
1812 .sk_clone_security =
1813 LIST_HEAD_INIT(security_hook_heads.sk_clone_security),
1814 .sk_getsecid = LIST_HEAD_INIT(security_hook_heads.sk_getsecid),
1815 .sock_graft = LIST_HEAD_INIT(security_hook_heads.sock_graft),
1816 .inet_conn_request =
1817 LIST_HEAD_INIT(security_hook_heads.inet_conn_request),
1818 .inet_csk_clone =
1819 LIST_HEAD_INIT(security_hook_heads.inet_csk_clone),
1820 .inet_conn_established =
1821 LIST_HEAD_INIT(security_hook_heads.inet_conn_established),
1822 .secmark_relabel_packet =
1823 LIST_HEAD_INIT(security_hook_heads.secmark_relabel_packet),
1824 .secmark_refcount_inc =
1825 LIST_HEAD_INIT(security_hook_heads.secmark_refcount_inc),
1826 .secmark_refcount_dec =
1827 LIST_HEAD_INIT(security_hook_heads.secmark_refcount_dec),
1828 .req_classify_flow =
1829 LIST_HEAD_INIT(security_hook_heads.req_classify_flow),
1830 .tun_dev_alloc_security =
1831 LIST_HEAD_INIT(security_hook_heads.tun_dev_alloc_security),
1832 .tun_dev_free_security =
1833 LIST_HEAD_INIT(security_hook_heads.tun_dev_free_security),
1834 .tun_dev_create =
1835 LIST_HEAD_INIT(security_hook_heads.tun_dev_create),
1836 .tun_dev_attach_queue =
1837 LIST_HEAD_INIT(security_hook_heads.tun_dev_attach_queue),
1838 .tun_dev_attach =
1839 LIST_HEAD_INIT(security_hook_heads.tun_dev_attach),
1840 .tun_dev_open = LIST_HEAD_INIT(security_hook_heads.tun_dev_open),
1841 .skb_owned_by = LIST_HEAD_INIT(security_hook_heads.skb_owned_by),
1842#endif /* CONFIG_SECURITY_NETWORK */
1843#ifdef CONFIG_SECURITY_NETWORK_XFRM
1844 .xfrm_policy_alloc_security =
1845 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_alloc_security),
1846 .xfrm_policy_clone_security =
1847 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_clone_security),
1848 .xfrm_policy_free_security =
1849 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_free_security),
1850 .xfrm_policy_delete_security =
1851 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_delete_security),
1852 .xfrm_state_alloc =
1853 LIST_HEAD_INIT(security_hook_heads.xfrm_state_alloc),
1854 .xfrm_state_alloc_acquire =
1855 LIST_HEAD_INIT(security_hook_heads.xfrm_state_alloc_acquire),
1856 .xfrm_state_free_security =
1857 LIST_HEAD_INIT(security_hook_heads.xfrm_state_free_security),
1858 .xfrm_state_delete_security =
1859 LIST_HEAD_INIT(security_hook_heads.xfrm_state_delete_security),
1860 .xfrm_policy_lookup =
1861 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_lookup),
1862 .xfrm_state_pol_flow_match =
1863 LIST_HEAD_INIT(security_hook_heads.xfrm_state_pol_flow_match),
1864 .xfrm_decode_session =
1865 LIST_HEAD_INIT(security_hook_heads.xfrm_decode_session),
1866#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1867#ifdef CONFIG_KEYS
1868 .key_alloc = LIST_HEAD_INIT(security_hook_heads.key_alloc),
1869 .key_free = LIST_HEAD_INIT(security_hook_heads.key_free),
1870 .key_permission =
1871 LIST_HEAD_INIT(security_hook_heads.key_permission),
1872 .key_getsecurity =
1873 LIST_HEAD_INIT(security_hook_heads.key_getsecurity),
1874#endif /* CONFIG_KEYS */
1875#ifdef CONFIG_AUDIT
1876 .audit_rule_init =
1877 LIST_HEAD_INIT(security_hook_heads.audit_rule_init),
1878 .audit_rule_known =
1879 LIST_HEAD_INIT(security_hook_heads.audit_rule_known),
1880 .audit_rule_match =
1881 LIST_HEAD_INIT(security_hook_heads.audit_rule_match),
1882 .audit_rule_free =
1883 LIST_HEAD_INIT(security_hook_heads.audit_rule_free),
1884#endif /* CONFIG_AUDIT */
1885};
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