Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 * Always load the capability module.
60 */
61 capability_add_hooks();
62#ifdef CONFIG_SECURITY_YAMA_STACKED
63 /*
64 * If Yama is configured for stacking load it next.
65 */
66 yama_add_hooks();
67#endif
68 /*
69 * Load the chosen module if there is one.
70 * This will also find yama if it is stacking
71 */
72 do_security_initcalls();
73
74 return 0;
75}
76
77/* Save user chosen LSM */
78static int __init choose_lsm(char *str)
79{
80 strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
81 return 1;
82}
83__setup("security=", choose_lsm);
84
85/**
86 * security_module_enable - Load given security module on boot ?
87 * @module: the name of the module
88 *
89 * Each LSM must pass this method before registering its own operations
90 * to avoid security registration races. This method may also be used
91 * to check if your LSM is currently loaded during kernel initialization.
92 *
93 * Return true if:
94 * -The passed LSM is the one chosen by user at boot time,
95 * -or the passed LSM is configured as the default and the user did not
96 * choose an alternate LSM at boot time.
97 * Otherwise, return false.
98 */
99int __init security_module_enable(const char *module)
100{
101 return !strcmp(module, chosen_lsm);
102}
103
104/*
105 * Hook list operation macros.
106 *
107 * call_void_hook:
108 * This is a hook that does not return a value.
109 *
110 * call_int_hook:
111 * This is a hook that returns a value.
112 */
113
114#define call_void_hook(FUNC, ...) \
115 do { \
116 struct security_hook_list *P; \
117 \
118 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
119 P->hook.FUNC(__VA_ARGS__); \
120 } while (0)
121
122#define call_int_hook(FUNC, IRC, ...) ({ \
123 int RC = IRC; \
124 do { \
125 struct security_hook_list *P; \
126 \
127 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
128 RC = P->hook.FUNC(__VA_ARGS__); \
129 if (RC != 0) \
130 break; \
131 } \
132 } while (0); \
133 RC; \
134})
135
136/* Security operations */
137
138int security_binder_set_context_mgr(struct task_struct *mgr)
139{
140 return call_int_hook(binder_set_context_mgr, 0, mgr);
141}
142
143int security_binder_transaction(struct task_struct *from,
144 struct task_struct *to)
145{
146 return call_int_hook(binder_transaction, 0, from, to);
147}
148
149int security_binder_transfer_binder(struct task_struct *from,
150 struct task_struct *to)
151{
152 return call_int_hook(binder_transfer_binder, 0, from, to);
153}
154
155int security_binder_transfer_file(struct task_struct *from,
156 struct task_struct *to, struct file *file)
157{
158 return call_int_hook(binder_transfer_file, 0, from, to, file);
159}
160
161int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
162{
163 return call_int_hook(ptrace_access_check, 0, child, mode);
164}
165
166int security_ptrace_traceme(struct task_struct *parent)
167{
168 return call_int_hook(ptrace_traceme, 0, parent);
169}
170
171int security_capget(struct task_struct *target,
172 kernel_cap_t *effective,
173 kernel_cap_t *inheritable,
174 kernel_cap_t *permitted)
175{
176 return call_int_hook(capget, 0, target,
177 effective, inheritable, permitted);
178}
179
180int security_capset(struct cred *new, const struct cred *old,
181 const kernel_cap_t *effective,
182 const kernel_cap_t *inheritable,
183 const kernel_cap_t *permitted)
184{
185 return call_int_hook(capset, 0, new, old,
186 effective, inheritable, permitted);
187}
188
189int security_capable(const struct cred *cred, struct user_namespace *ns,
190 int cap)
191{
192 return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
193}
194
195int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
196 int cap)
197{
198 return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
199}
200
201int security_quotactl(int cmds, int type, int id, struct super_block *sb)
202{
203 return call_int_hook(quotactl, 0, cmds, type, id, sb);
204}
205
206int security_quota_on(struct dentry *dentry)
207{
208 return call_int_hook(quota_on, 0, dentry);
209}
210
211int security_syslog(int type)
212{
213 return call_int_hook(syslog, 0, type);
214}
215
216int security_settime(const struct timespec *ts, const struct timezone *tz)
217{
218 return call_int_hook(settime, 0, ts, tz);
219}
220
221int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
222{
223 struct security_hook_list *hp;
224 int cap_sys_admin = 1;
225 int rc;
226
227 /*
228 * The module will respond with a positive value if
229 * it thinks the __vm_enough_memory() call should be
230 * made with the cap_sys_admin set. If all of the modules
231 * agree that it should be set it will. If any module
232 * thinks it should not be set it won't.
233 */
234 list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
235 rc = hp->hook.vm_enough_memory(mm, pages);
236 if (rc <= 0) {
237 cap_sys_admin = 0;
238 break;
239 }
240 }
241 return __vm_enough_memory(mm, pages, cap_sys_admin);
242}
243
244int security_bprm_set_creds(struct linux_binprm *bprm)
245{
246 return call_int_hook(bprm_set_creds, 0, bprm);
247}
248
249int security_bprm_check(struct linux_binprm *bprm)
250{
251 int ret;
252
253 ret = call_int_hook(bprm_check_security, 0, bprm);
254 if (ret)
255 return ret;
256 return ima_bprm_check(bprm);
257}
258
259void security_bprm_committing_creds(struct linux_binprm *bprm)
260{
261 call_void_hook(bprm_committing_creds, bprm);
262}
263
264void security_bprm_committed_creds(struct linux_binprm *bprm)
265{
266 call_void_hook(bprm_committed_creds, bprm);
267}
268
269int security_bprm_secureexec(struct linux_binprm *bprm)
270{
271 return call_int_hook(bprm_secureexec, 0, bprm);
272}
273
274int security_sb_alloc(struct super_block *sb)
275{
276 return call_int_hook(sb_alloc_security, 0, sb);
277}
278
279void security_sb_free(struct super_block *sb)
280{
281 call_void_hook(sb_free_security, sb);
282}
283
284int security_sb_copy_data(char *orig, char *copy)
285{
286 return call_int_hook(sb_copy_data, 0, orig, copy);
287}
288EXPORT_SYMBOL(security_sb_copy_data);
289
290int security_sb_remount(struct super_block *sb, void *data)
291{
292 return call_int_hook(sb_remount, 0, sb, data);
293}
294
295int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
296{
297 return call_int_hook(sb_kern_mount, 0, sb, flags, data);
298}
299
300int security_sb_show_options(struct seq_file *m, struct super_block *sb)
301{
302 return call_int_hook(sb_show_options, 0, m, sb);
303}
304
305int security_sb_statfs(struct dentry *dentry)
306{
307 return call_int_hook(sb_statfs, 0, dentry);
308}
309
310int security_sb_mount(const char *dev_name, struct path *path,
311 const char *type, unsigned long flags, void *data)
312{
313 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
314}
315
316int security_sb_umount(struct vfsmount *mnt, int flags)
317{
318 return call_int_hook(sb_umount, 0, mnt, flags);
319}
320
321int security_sb_pivotroot(struct path *old_path, struct path *new_path)
322{
323 return call_int_hook(sb_pivotroot, 0, old_path, new_path);
324}
325
326int security_sb_set_mnt_opts(struct super_block *sb,
327 struct security_mnt_opts *opts,
328 unsigned long kern_flags,
329 unsigned long *set_kern_flags)
330{
331 return call_int_hook(sb_set_mnt_opts,
332 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
333 opts, kern_flags, set_kern_flags);
334}
335EXPORT_SYMBOL(security_sb_set_mnt_opts);
336
337int security_sb_clone_mnt_opts(const struct super_block *oldsb,
338 struct super_block *newsb)
339{
340 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb);
341}
342EXPORT_SYMBOL(security_sb_clone_mnt_opts);
343
344int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
345{
346 return call_int_hook(sb_parse_opts_str, 0, options, opts);
347}
348EXPORT_SYMBOL(security_sb_parse_opts_str);
349
350int security_inode_alloc(struct inode *inode)
351{
352 inode->i_security = NULL;
353 return call_int_hook(inode_alloc_security, 0, inode);
354}
355
356void security_inode_free(struct inode *inode)
357{
358 integrity_inode_free(inode);
359 call_void_hook(inode_free_security, inode);
360}
361
362int security_dentry_init_security(struct dentry *dentry, int mode,
363 struct qstr *name, void **ctx,
364 u32 *ctxlen)
365{
366 return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
367 name, ctx, ctxlen);
368}
369EXPORT_SYMBOL(security_dentry_init_security);
370
371int security_inode_init_security(struct inode *inode, struct inode *dir,
372 const struct qstr *qstr,
373 const initxattrs initxattrs, void *fs_data)
374{
375 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
376 struct xattr *lsm_xattr, *evm_xattr, *xattr;
377 int ret;
378
379 if (unlikely(IS_PRIVATE(inode)))
380 return 0;
381
382 if (!initxattrs)
383 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
384 dir, qstr, NULL, NULL, NULL);
385 memset(new_xattrs, 0, sizeof(new_xattrs));
386 lsm_xattr = new_xattrs;
387 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
388 &lsm_xattr->name,
389 &lsm_xattr->value,
390 &lsm_xattr->value_len);
391 if (ret)
392 goto out;
393
394 evm_xattr = lsm_xattr + 1;
395 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
396 if (ret)
397 goto out;
398 ret = initxattrs(inode, new_xattrs, fs_data);
399out:
400 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
401 kfree(xattr->value);
402 return (ret == -EOPNOTSUPP) ? 0 : ret;
403}
404EXPORT_SYMBOL(security_inode_init_security);
405
406int security_old_inode_init_security(struct inode *inode, struct inode *dir,
407 const struct qstr *qstr, const char **name,
408 void **value, size_t *len)
409{
410 if (unlikely(IS_PRIVATE(inode)))
411 return -EOPNOTSUPP;
412 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
413 qstr, name, value, len);
414}
415EXPORT_SYMBOL(security_old_inode_init_security);
416
417#ifdef CONFIG_SECURITY_PATH
418int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
419 unsigned int dev)
420{
421 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
422 return 0;
423 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
424}
425EXPORT_SYMBOL(security_path_mknod);
426
427int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
428{
429 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
430 return 0;
431 return call_int_hook(path_mkdir, 0, dir, dentry, mode);
432}
433EXPORT_SYMBOL(security_path_mkdir);
434
435int security_path_rmdir(struct path *dir, struct dentry *dentry)
436{
437 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
438 return 0;
439 return call_int_hook(path_rmdir, 0, dir, dentry);
440}
441
442int security_path_unlink(struct path *dir, struct dentry *dentry)
443{
444 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
445 return 0;
446 return call_int_hook(path_unlink, 0, dir, dentry);
447}
448EXPORT_SYMBOL(security_path_unlink);
449
450int security_path_symlink(struct path *dir, struct dentry *dentry,
451 const char *old_name)
452{
453 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
454 return 0;
455 return call_int_hook(path_symlink, 0, dir, dentry, old_name);
456}
457
458int security_path_link(struct dentry *old_dentry, struct path *new_dir,
459 struct dentry *new_dentry)
460{
461 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
462 return 0;
463 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
464}
465
466int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
467 struct path *new_dir, struct dentry *new_dentry,
468 unsigned int flags)
469{
470 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
471 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
472 return 0;
473
474 if (flags & RENAME_EXCHANGE) {
475 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
476 old_dir, old_dentry);
477 if (err)
478 return err;
479 }
480
481 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
482 new_dentry);
483}
484EXPORT_SYMBOL(security_path_rename);
485
486int security_path_truncate(struct path *path)
487{
488 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
489 return 0;
490 return call_int_hook(path_truncate, 0, path);
491}
492
493int security_path_chmod(struct path *path, umode_t mode)
494{
495 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
496 return 0;
497 return call_int_hook(path_chmod, 0, path, mode);
498}
499
500int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
501{
502 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
503 return 0;
504 return call_int_hook(path_chown, 0, path, uid, gid);
505}
506
507int security_path_chroot(struct path *path)
508{
509 return call_int_hook(path_chroot, 0, path);
510}
511#endif
512
513int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
514{
515 if (unlikely(IS_PRIVATE(dir)))
516 return 0;
517 return call_int_hook(inode_create, 0, dir, dentry, mode);
518}
519EXPORT_SYMBOL_GPL(security_inode_create);
520
521int security_inode_link(struct dentry *old_dentry, struct inode *dir,
522 struct dentry *new_dentry)
523{
524 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
525 return 0;
526 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
527}
528
529int security_inode_unlink(struct inode *dir, struct dentry *dentry)
530{
531 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
532 return 0;
533 return call_int_hook(inode_unlink, 0, dir, dentry);
534}
535
536int security_inode_symlink(struct inode *dir, struct dentry *dentry,
537 const char *old_name)
538{
539 if (unlikely(IS_PRIVATE(dir)))
540 return 0;
541 return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
542}
543
544int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
545{
546 if (unlikely(IS_PRIVATE(dir)))
547 return 0;
548 return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
549}
550EXPORT_SYMBOL_GPL(security_inode_mkdir);
551
552int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
553{
554 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
555 return 0;
556 return call_int_hook(inode_rmdir, 0, dir, dentry);
557}
558
559int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
560{
561 if (unlikely(IS_PRIVATE(dir)))
562 return 0;
563 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
564}
565
566int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
567 struct inode *new_dir, struct dentry *new_dentry,
568 unsigned int flags)
569{
570 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
571 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
572 return 0;
573
574 if (flags & RENAME_EXCHANGE) {
575 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
576 old_dir, old_dentry);
577 if (err)
578 return err;
579 }
580
581 return call_int_hook(inode_rename, 0, old_dir, old_dentry,
582 new_dir, new_dentry);
583}
584
585int security_inode_readlink(struct dentry *dentry)
586{
587 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
588 return 0;
589 return call_int_hook(inode_readlink, 0, dentry);
590}
591
592int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
593 bool rcu)
594{
595 if (unlikely(IS_PRIVATE(inode)))
596 return 0;
597 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
598}
599
600int security_inode_permission(struct inode *inode, int mask)
601{
602 if (unlikely(IS_PRIVATE(inode)))
603 return 0;
604 return call_int_hook(inode_permission, 0, inode, mask);
605}
606
607int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
608{
609 int ret;
610
611 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
612 return 0;
613 ret = call_int_hook(inode_setattr, 0, dentry, attr);
614 if (ret)
615 return ret;
616 return evm_inode_setattr(dentry, attr);
617}
618EXPORT_SYMBOL_GPL(security_inode_setattr);
619
620int security_inode_getattr(const struct path *path)
621{
622 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
623 return 0;
624 return call_int_hook(inode_getattr, 0, path);
625}
626
627int security_inode_setxattr(struct dentry *dentry, const char *name,
628 const void *value, size_t size, int flags)
629{
630 int ret;
631
632 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
633 return 0;
634 /*
635 * SELinux and Smack integrate the cap call,
636 * so assume that all LSMs supplying this call do so.
637 */
638 ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
639 flags);
640
641 if (ret == 1)
642 ret = cap_inode_setxattr(dentry, name, value, size, flags);
643 if (ret)
644 return ret;
645 ret = ima_inode_setxattr(dentry, name, value, size);
646 if (ret)
647 return ret;
648 return evm_inode_setxattr(dentry, name, value, size);
649}
650
651void security_inode_post_setxattr(struct dentry *dentry, const char *name,
652 const void *value, size_t size, int flags)
653{
654 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
655 return;
656 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
657 evm_inode_post_setxattr(dentry, name, value, size);
658}
659
660int security_inode_getxattr(struct dentry *dentry, const char *name)
661{
662 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
663 return 0;
664 return call_int_hook(inode_getxattr, 0, dentry, name);
665}
666
667int security_inode_listxattr(struct dentry *dentry)
668{
669 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
670 return 0;
671 return call_int_hook(inode_listxattr, 0, dentry);
672}
673
674int security_inode_removexattr(struct dentry *dentry, const char *name)
675{
676 int ret;
677
678 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
679 return 0;
680 /*
681 * SELinux and Smack integrate the cap call,
682 * so assume that all LSMs supplying this call do so.
683 */
684 ret = call_int_hook(inode_removexattr, 1, dentry, name);
685 if (ret == 1)
686 ret = cap_inode_removexattr(dentry, name);
687 if (ret)
688 return ret;
689 ret = ima_inode_removexattr(dentry, name);
690 if (ret)
691 return ret;
692 return evm_inode_removexattr(dentry, name);
693}
694
695int security_inode_need_killpriv(struct dentry *dentry)
696{
697 return call_int_hook(inode_need_killpriv, 0, dentry);
698}
699
700int security_inode_killpriv(struct dentry *dentry)
701{
702 return call_int_hook(inode_killpriv, 0, dentry);
703}
704
705int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
706{
707 if (unlikely(IS_PRIVATE(inode)))
708 return -EOPNOTSUPP;
709 return call_int_hook(inode_getsecurity, -EOPNOTSUPP, inode, name,
710 buffer, alloc);
711}
712
713int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
714{
715 if (unlikely(IS_PRIVATE(inode)))
716 return -EOPNOTSUPP;
717 return call_int_hook(inode_setsecurity, -EOPNOTSUPP, inode, name,
718 value, size, flags);
719}
720
721int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
722{
723 if (unlikely(IS_PRIVATE(inode)))
724 return 0;
725 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
726}
727EXPORT_SYMBOL(security_inode_listsecurity);
728
729void security_inode_getsecid(const struct inode *inode, u32 *secid)
730{
731 call_void_hook(inode_getsecid, inode, secid);
732}
733
734int security_file_permission(struct file *file, int mask)
735{
736 int ret;
737
738 ret = call_int_hook(file_permission, 0, file, mask);
739 if (ret)
740 return ret;
741
742 return fsnotify_perm(file, mask);
743}
744
745int security_file_alloc(struct file *file)
746{
747 return call_int_hook(file_alloc_security, 0, file);
748}
749
750void security_file_free(struct file *file)
751{
752 call_void_hook(file_free_security, file);
753}
754
755int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
756{
757 return call_int_hook(file_ioctl, 0, file, cmd, arg);
758}
759
760static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
761{
762 /*
763 * Does we have PROT_READ and does the application expect
764 * it to imply PROT_EXEC? If not, nothing to talk about...
765 */
766 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
767 return prot;
768 if (!(current->personality & READ_IMPLIES_EXEC))
769 return prot;
770 /*
771 * if that's an anonymous mapping, let it.
772 */
773 if (!file)
774 return prot | PROT_EXEC;
775 /*
776 * ditto if it's not on noexec mount, except that on !MMU we need
777 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
778 */
779 if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) {
780#ifndef CONFIG_MMU
781 if (file->f_op->mmap_capabilities) {
782 unsigned caps = file->f_op->mmap_capabilities(file);
783 if (!(caps & NOMMU_MAP_EXEC))
784 return prot;
785 }
786#endif
787 return prot | PROT_EXEC;
788 }
789 /* anything on noexec mount won't get PROT_EXEC */
790 return prot;
791}
792
793int security_mmap_file(struct file *file, unsigned long prot,
794 unsigned long flags)
795{
796 int ret;
797 ret = call_int_hook(mmap_file, 0, file, prot,
798 mmap_prot(file, prot), flags);
799 if (ret)
800 return ret;
801 return ima_file_mmap(file, prot);
802}
803
804int security_mmap_addr(unsigned long addr)
805{
806 return call_int_hook(mmap_addr, 0, addr);
807}
808
809int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
810 unsigned long prot)
811{
812 return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
813}
814
815int security_file_lock(struct file *file, unsigned int cmd)
816{
817 return call_int_hook(file_lock, 0, file, cmd);
818}
819
820int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
821{
822 return call_int_hook(file_fcntl, 0, file, cmd, arg);
823}
824
825void security_file_set_fowner(struct file *file)
826{
827 call_void_hook(file_set_fowner, file);
828}
829
830int security_file_send_sigiotask(struct task_struct *tsk,
831 struct fown_struct *fown, int sig)
832{
833 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
834}
835
836int security_file_receive(struct file *file)
837{
838 return call_int_hook(file_receive, 0, file);
839}
840
841int security_file_open(struct file *file, const struct cred *cred)
842{
843 int ret;
844
845 ret = call_int_hook(file_open, 0, file, cred);
846 if (ret)
847 return ret;
848
849 return fsnotify_perm(file, MAY_OPEN);
850}
851
852int security_task_create(unsigned long clone_flags)
853{
854 return call_int_hook(task_create, 0, clone_flags);
855}
856
857void security_task_free(struct task_struct *task)
858{
859 call_void_hook(task_free, task);
860}
861
862int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
863{
864 return call_int_hook(cred_alloc_blank, 0, cred, gfp);
865}
866
867void security_cred_free(struct cred *cred)
868{
869 call_void_hook(cred_free, cred);
870}
871
872int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
873{
874 return call_int_hook(cred_prepare, 0, new, old, gfp);
875}
876
877void security_transfer_creds(struct cred *new, const struct cred *old)
878{
879 call_void_hook(cred_transfer, new, old);
880}
881
882int security_kernel_act_as(struct cred *new, u32 secid)
883{
884 return call_int_hook(kernel_act_as, 0, new, secid);
885}
886
887int security_kernel_create_files_as(struct cred *new, struct inode *inode)
888{
889 return call_int_hook(kernel_create_files_as, 0, new, inode);
890}
891
892int security_kernel_fw_from_file(struct file *file, char *buf, size_t size)
893{
894 int ret;
895
896 ret = call_int_hook(kernel_fw_from_file, 0, file, buf, size);
897 if (ret)
898 return ret;
899 return ima_fw_from_file(file, buf, size);
900}
901EXPORT_SYMBOL_GPL(security_kernel_fw_from_file);
902
903int security_kernel_module_request(char *kmod_name)
904{
905 return call_int_hook(kernel_module_request, 0, kmod_name);
906}
907
908int security_kernel_module_from_file(struct file *file)
909{
910 int ret;
911
912 ret = call_int_hook(kernel_module_from_file, 0, file);
913 if (ret)
914 return ret;
915 return ima_module_check(file);
916}
917
918int security_task_fix_setuid(struct cred *new, const struct cred *old,
919 int flags)
920{
921 return call_int_hook(task_fix_setuid, 0, new, old, flags);
922}
923
924int security_task_setpgid(struct task_struct *p, pid_t pgid)
925{
926 return call_int_hook(task_setpgid, 0, p, pgid);
927}
928
929int security_task_getpgid(struct task_struct *p)
930{
931 return call_int_hook(task_getpgid, 0, p);
932}
933
934int security_task_getsid(struct task_struct *p)
935{
936 return call_int_hook(task_getsid, 0, p);
937}
938
939void security_task_getsecid(struct task_struct *p, u32 *secid)
940{
941 *secid = 0;
942 call_void_hook(task_getsecid, p, secid);
943}
944EXPORT_SYMBOL(security_task_getsecid);
945
946int security_task_setnice(struct task_struct *p, int nice)
947{
948 return call_int_hook(task_setnice, 0, p, nice);
949}
950
951int security_task_setioprio(struct task_struct *p, int ioprio)
952{
953 return call_int_hook(task_setioprio, 0, p, ioprio);
954}
955
956int security_task_getioprio(struct task_struct *p)
957{
958 return call_int_hook(task_getioprio, 0, p);
959}
960
961int security_task_setrlimit(struct task_struct *p, unsigned int resource,
962 struct rlimit *new_rlim)
963{
964 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
965}
966
967int security_task_setscheduler(struct task_struct *p)
968{
969 return call_int_hook(task_setscheduler, 0, p);
970}
971
972int security_task_getscheduler(struct task_struct *p)
973{
974 return call_int_hook(task_getscheduler, 0, p);
975}
976
977int security_task_movememory(struct task_struct *p)
978{
979 return call_int_hook(task_movememory, 0, p);
980}
981
982int security_task_kill(struct task_struct *p, struct siginfo *info,
983 int sig, u32 secid)
984{
985 return call_int_hook(task_kill, 0, p, info, sig, secid);
986}
987
988int security_task_wait(struct task_struct *p)
989{
990 return call_int_hook(task_wait, 0, p);
991}
992
993int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
994 unsigned long arg4, unsigned long arg5)
995{
996 int thisrc;
997 int rc = -ENOSYS;
998 struct security_hook_list *hp;
999
1000 list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1001 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1002 if (thisrc != -ENOSYS) {
1003 rc = thisrc;
1004 if (thisrc != 0)
1005 break;
1006 }
1007 }
1008 return rc;
1009}
1010
1011void security_task_to_inode(struct task_struct *p, struct inode *inode)
1012{
1013 call_void_hook(task_to_inode, p, inode);
1014}
1015
1016int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1017{
1018 return call_int_hook(ipc_permission, 0, ipcp, flag);
1019}
1020
1021void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1022{
1023 *secid = 0;
1024 call_void_hook(ipc_getsecid, ipcp, secid);
1025}
1026
1027int security_msg_msg_alloc(struct msg_msg *msg)
1028{
1029 return call_int_hook(msg_msg_alloc_security, 0, msg);
1030}
1031
1032void security_msg_msg_free(struct msg_msg *msg)
1033{
1034 call_void_hook(msg_msg_free_security, msg);
1035}
1036
1037int security_msg_queue_alloc(struct msg_queue *msq)
1038{
1039 return call_int_hook(msg_queue_alloc_security, 0, msq);
1040}
1041
1042void security_msg_queue_free(struct msg_queue *msq)
1043{
1044 call_void_hook(msg_queue_free_security, msq);
1045}
1046
1047int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
1048{
1049 return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1050}
1051
1052int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1053{
1054 return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1055}
1056
1057int security_msg_queue_msgsnd(struct msg_queue *msq,
1058 struct msg_msg *msg, int msqflg)
1059{
1060 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1061}
1062
1063int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1064 struct task_struct *target, long type, int mode)
1065{
1066 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1067}
1068
1069int security_shm_alloc(struct shmid_kernel *shp)
1070{
1071 return call_int_hook(shm_alloc_security, 0, shp);
1072}
1073
1074void security_shm_free(struct shmid_kernel *shp)
1075{
1076 call_void_hook(shm_free_security, shp);
1077}
1078
1079int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1080{
1081 return call_int_hook(shm_associate, 0, shp, shmflg);
1082}
1083
1084int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1085{
1086 return call_int_hook(shm_shmctl, 0, shp, cmd);
1087}
1088
1089int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1090{
1091 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1092}
1093
1094int security_sem_alloc(struct sem_array *sma)
1095{
1096 return call_int_hook(sem_alloc_security, 0, sma);
1097}
1098
1099void security_sem_free(struct sem_array *sma)
1100{
1101 call_void_hook(sem_free_security, sma);
1102}
1103
1104int security_sem_associate(struct sem_array *sma, int semflg)
1105{
1106 return call_int_hook(sem_associate, 0, sma, semflg);
1107}
1108
1109int security_sem_semctl(struct sem_array *sma, int cmd)
1110{
1111 return call_int_hook(sem_semctl, 0, sma, cmd);
1112}
1113
1114int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1115 unsigned nsops, int alter)
1116{
1117 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1118}
1119
1120void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1121{
1122 if (unlikely(inode && IS_PRIVATE(inode)))
1123 return;
1124 call_void_hook(d_instantiate, dentry, inode);
1125}
1126EXPORT_SYMBOL(security_d_instantiate);
1127
1128int security_getprocattr(struct task_struct *p, char *name, char **value)
1129{
1130 return call_int_hook(getprocattr, -EINVAL, p, name, value);
1131}
1132
1133int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1134{
1135 return call_int_hook(setprocattr, -EINVAL, p, name, value, size);
1136}
1137
1138int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1139{
1140 return call_int_hook(netlink_send, 0, sk, skb);
1141}
1142
1143int security_ismaclabel(const char *name)
1144{
1145 return call_int_hook(ismaclabel, 0, name);
1146}
1147EXPORT_SYMBOL(security_ismaclabel);
1148
1149int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1150{
1151 return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1152 seclen);
1153}
1154EXPORT_SYMBOL(security_secid_to_secctx);
1155
1156int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1157{
1158 *secid = 0;
1159 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1160}
1161EXPORT_SYMBOL(security_secctx_to_secid);
1162
1163void security_release_secctx(char *secdata, u32 seclen)
1164{
1165 call_void_hook(release_secctx, secdata, seclen);
1166}
1167EXPORT_SYMBOL(security_release_secctx);
1168
1169int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1170{
1171 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1172}
1173EXPORT_SYMBOL(security_inode_notifysecctx);
1174
1175int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1176{
1177 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1178}
1179EXPORT_SYMBOL(security_inode_setsecctx);
1180
1181int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1182{
1183 return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1184}
1185EXPORT_SYMBOL(security_inode_getsecctx);
1186
1187#ifdef CONFIG_SECURITY_NETWORK
1188
1189int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1190{
1191 return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1192}
1193EXPORT_SYMBOL(security_unix_stream_connect);
1194
1195int security_unix_may_send(struct socket *sock, struct socket *other)
1196{
1197 return call_int_hook(unix_may_send, 0, sock, other);
1198}
1199EXPORT_SYMBOL(security_unix_may_send);
1200
1201int security_socket_create(int family, int type, int protocol, int kern)
1202{
1203 return call_int_hook(socket_create, 0, family, type, protocol, kern);
1204}
1205
1206int security_socket_post_create(struct socket *sock, int family,
1207 int type, int protocol, int kern)
1208{
1209 return call_int_hook(socket_post_create, 0, sock, family, type,
1210 protocol, kern);
1211}
1212
1213int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1214{
1215 return call_int_hook(socket_bind, 0, sock, address, addrlen);
1216}
1217
1218int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1219{
1220 return call_int_hook(socket_connect, 0, sock, address, addrlen);
1221}
1222
1223int security_socket_listen(struct socket *sock, int backlog)
1224{
1225 return call_int_hook(socket_listen, 0, sock, backlog);
1226}
1227
1228int security_socket_accept(struct socket *sock, struct socket *newsock)
1229{
1230 return call_int_hook(socket_accept, 0, sock, newsock);
1231}
1232
1233int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1234{
1235 return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1236}
1237
1238int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1239 int size, int flags)
1240{
1241 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1242}
1243
1244int security_socket_getsockname(struct socket *sock)
1245{
1246 return call_int_hook(socket_getsockname, 0, sock);
1247}
1248
1249int security_socket_getpeername(struct socket *sock)
1250{
1251 return call_int_hook(socket_getpeername, 0, sock);
1252}
1253
1254int security_socket_getsockopt(struct socket *sock, int level, int optname)
1255{
1256 return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1257}
1258
1259int security_socket_setsockopt(struct socket *sock, int level, int optname)
1260{
1261 return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1262}
1263
1264int security_socket_shutdown(struct socket *sock, int how)
1265{
1266 return call_int_hook(socket_shutdown, 0, sock, how);
1267}
1268
1269int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1270{
1271 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1272}
1273EXPORT_SYMBOL(security_sock_rcv_skb);
1274
1275int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1276 int __user *optlen, unsigned len)
1277{
1278 return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1279 optval, optlen, len);
1280}
1281
1282int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1283{
1284 return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1285 skb, secid);
1286}
1287EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1288
1289int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1290{
1291 return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1292}
1293
1294void security_sk_free(struct sock *sk)
1295{
1296 call_void_hook(sk_free_security, sk);
1297}
1298
1299void security_sk_clone(const struct sock *sk, struct sock *newsk)
1300{
1301 call_void_hook(sk_clone_security, sk, newsk);
1302}
1303EXPORT_SYMBOL(security_sk_clone);
1304
1305void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1306{
1307 call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1308}
1309EXPORT_SYMBOL(security_sk_classify_flow);
1310
1311void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1312{
1313 call_void_hook(req_classify_flow, req, fl);
1314}
1315EXPORT_SYMBOL(security_req_classify_flow);
1316
1317void security_sock_graft(struct sock *sk, struct socket *parent)
1318{
1319 call_void_hook(sock_graft, sk, parent);
1320}
1321EXPORT_SYMBOL(security_sock_graft);
1322
1323int security_inet_conn_request(struct sock *sk,
1324 struct sk_buff *skb, struct request_sock *req)
1325{
1326 return call_int_hook(inet_conn_request, 0, sk, skb, req);
1327}
1328EXPORT_SYMBOL(security_inet_conn_request);
1329
1330void security_inet_csk_clone(struct sock *newsk,
1331 const struct request_sock *req)
1332{
1333 call_void_hook(inet_csk_clone, newsk, req);
1334}
1335
1336void security_inet_conn_established(struct sock *sk,
1337 struct sk_buff *skb)
1338{
1339 call_void_hook(inet_conn_established, sk, skb);
1340}
1341
1342int security_secmark_relabel_packet(u32 secid)
1343{
1344 return call_int_hook(secmark_relabel_packet, 0, secid);
1345}
1346EXPORT_SYMBOL(security_secmark_relabel_packet);
1347
1348void security_secmark_refcount_inc(void)
1349{
1350 call_void_hook(secmark_refcount_inc);
1351}
1352EXPORT_SYMBOL(security_secmark_refcount_inc);
1353
1354void security_secmark_refcount_dec(void)
1355{
1356 call_void_hook(secmark_refcount_dec);
1357}
1358EXPORT_SYMBOL(security_secmark_refcount_dec);
1359
1360int security_tun_dev_alloc_security(void **security)
1361{
1362 return call_int_hook(tun_dev_alloc_security, 0, security);
1363}
1364EXPORT_SYMBOL(security_tun_dev_alloc_security);
1365
1366void security_tun_dev_free_security(void *security)
1367{
1368 call_void_hook(tun_dev_free_security, security);
1369}
1370EXPORT_SYMBOL(security_tun_dev_free_security);
1371
1372int security_tun_dev_create(void)
1373{
1374 return call_int_hook(tun_dev_create, 0);
1375}
1376EXPORT_SYMBOL(security_tun_dev_create);
1377
1378int security_tun_dev_attach_queue(void *security)
1379{
1380 return call_int_hook(tun_dev_attach_queue, 0, security);
1381}
1382EXPORT_SYMBOL(security_tun_dev_attach_queue);
1383
1384int security_tun_dev_attach(struct sock *sk, void *security)
1385{
1386 return call_int_hook(tun_dev_attach, 0, sk, security);
1387}
1388EXPORT_SYMBOL(security_tun_dev_attach);
1389
1390int security_tun_dev_open(void *security)
1391{
1392 return call_int_hook(tun_dev_open, 0, security);
1393}
1394EXPORT_SYMBOL(security_tun_dev_open);
1395
1396#endif /* CONFIG_SECURITY_NETWORK */
1397
1398#ifdef CONFIG_SECURITY_NETWORK_XFRM
1399
1400int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1401 struct xfrm_user_sec_ctx *sec_ctx,
1402 gfp_t gfp)
1403{
1404 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1405}
1406EXPORT_SYMBOL(security_xfrm_policy_alloc);
1407
1408int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1409 struct xfrm_sec_ctx **new_ctxp)
1410{
1411 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1412}
1413
1414void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1415{
1416 call_void_hook(xfrm_policy_free_security, ctx);
1417}
1418EXPORT_SYMBOL(security_xfrm_policy_free);
1419
1420int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1421{
1422 return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1423}
1424
1425int security_xfrm_state_alloc(struct xfrm_state *x,
1426 struct xfrm_user_sec_ctx *sec_ctx)
1427{
1428 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1429}
1430EXPORT_SYMBOL(security_xfrm_state_alloc);
1431
1432int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1433 struct xfrm_sec_ctx *polsec, u32 secid)
1434{
1435 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1436}
1437
1438int security_xfrm_state_delete(struct xfrm_state *x)
1439{
1440 return call_int_hook(xfrm_state_delete_security, 0, x);
1441}
1442EXPORT_SYMBOL(security_xfrm_state_delete);
1443
1444void security_xfrm_state_free(struct xfrm_state *x)
1445{
1446 call_void_hook(xfrm_state_free_security, x);
1447}
1448
1449int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1450{
1451 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1452}
1453
1454int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1455 struct xfrm_policy *xp,
1456 const struct flowi *fl)
1457{
1458 struct security_hook_list *hp;
1459 int rc = 1;
1460
1461 /*
1462 * Since this function is expected to return 0 or 1, the judgment
1463 * becomes difficult if multiple LSMs supply this call. Fortunately,
1464 * we can use the first LSM's judgment because currently only SELinux
1465 * supplies this call.
1466 *
1467 * For speed optimization, we explicitly break the loop rather than
1468 * using the macro
1469 */
1470 list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1471 list) {
1472 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1473 break;
1474 }
1475 return rc;
1476}
1477
1478int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1479{
1480 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1481}
1482
1483void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1484{
1485 int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1486 0);
1487
1488 BUG_ON(rc);
1489}
1490EXPORT_SYMBOL(security_skb_classify_flow);
1491
1492#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1493
1494#ifdef CONFIG_KEYS
1495
1496int security_key_alloc(struct key *key, const struct cred *cred,
1497 unsigned long flags)
1498{
1499 return call_int_hook(key_alloc, 0, key, cred, flags);
1500}
1501
1502void security_key_free(struct key *key)
1503{
1504 call_void_hook(key_free, key);
1505}
1506
1507int security_key_permission(key_ref_t key_ref,
1508 const struct cred *cred, unsigned perm)
1509{
1510 return call_int_hook(key_permission, 0, key_ref, cred, perm);
1511}
1512
1513int security_key_getsecurity(struct key *key, char **_buffer)
1514{
1515 *_buffer = NULL;
1516 return call_int_hook(key_getsecurity, 0, key, _buffer);
1517}
1518
1519#endif /* CONFIG_KEYS */
1520
1521#ifdef CONFIG_AUDIT
1522
1523int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1524{
1525 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1526}
1527
1528int security_audit_rule_known(struct audit_krule *krule)
1529{
1530 return call_int_hook(audit_rule_known, 0, krule);
1531}
1532
1533void security_audit_rule_free(void *lsmrule)
1534{
1535 call_void_hook(audit_rule_free, lsmrule);
1536}
1537
1538int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1539 struct audit_context *actx)
1540{
1541 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1542 actx);
1543}
1544#endif /* CONFIG_AUDIT */
1545
1546struct security_hook_heads security_hook_heads = {
1547 .binder_set_context_mgr =
1548 LIST_HEAD_INIT(security_hook_heads.binder_set_context_mgr),
1549 .binder_transaction =
1550 LIST_HEAD_INIT(security_hook_heads.binder_transaction),
1551 .binder_transfer_binder =
1552 LIST_HEAD_INIT(security_hook_heads.binder_transfer_binder),
1553 .binder_transfer_file =
1554 LIST_HEAD_INIT(security_hook_heads.binder_transfer_file),
1555
1556 .ptrace_access_check =
1557 LIST_HEAD_INIT(security_hook_heads.ptrace_access_check),
1558 .ptrace_traceme =
1559 LIST_HEAD_INIT(security_hook_heads.ptrace_traceme),
1560 .capget = LIST_HEAD_INIT(security_hook_heads.capget),
1561 .capset = LIST_HEAD_INIT(security_hook_heads.capset),
1562 .capable = LIST_HEAD_INIT(security_hook_heads.capable),
1563 .quotactl = LIST_HEAD_INIT(security_hook_heads.quotactl),
1564 .quota_on = LIST_HEAD_INIT(security_hook_heads.quota_on),
1565 .syslog = LIST_HEAD_INIT(security_hook_heads.syslog),
1566 .settime = LIST_HEAD_INIT(security_hook_heads.settime),
1567 .vm_enough_memory =
1568 LIST_HEAD_INIT(security_hook_heads.vm_enough_memory),
1569 .bprm_set_creds =
1570 LIST_HEAD_INIT(security_hook_heads.bprm_set_creds),
1571 .bprm_check_security =
1572 LIST_HEAD_INIT(security_hook_heads.bprm_check_security),
1573 .bprm_secureexec =
1574 LIST_HEAD_INIT(security_hook_heads.bprm_secureexec),
1575 .bprm_committing_creds =
1576 LIST_HEAD_INIT(security_hook_heads.bprm_committing_creds),
1577 .bprm_committed_creds =
1578 LIST_HEAD_INIT(security_hook_heads.bprm_committed_creds),
1579 .sb_alloc_security =
1580 LIST_HEAD_INIT(security_hook_heads.sb_alloc_security),
1581 .sb_free_security =
1582 LIST_HEAD_INIT(security_hook_heads.sb_free_security),
1583 .sb_copy_data = LIST_HEAD_INIT(security_hook_heads.sb_copy_data),
1584 .sb_remount = LIST_HEAD_INIT(security_hook_heads.sb_remount),
1585 .sb_kern_mount =
1586 LIST_HEAD_INIT(security_hook_heads.sb_kern_mount),
1587 .sb_show_options =
1588 LIST_HEAD_INIT(security_hook_heads.sb_show_options),
1589 .sb_statfs = LIST_HEAD_INIT(security_hook_heads.sb_statfs),
1590 .sb_mount = LIST_HEAD_INIT(security_hook_heads.sb_mount),
1591 .sb_umount = LIST_HEAD_INIT(security_hook_heads.sb_umount),
1592 .sb_pivotroot = LIST_HEAD_INIT(security_hook_heads.sb_pivotroot),
1593 .sb_set_mnt_opts =
1594 LIST_HEAD_INIT(security_hook_heads.sb_set_mnt_opts),
1595 .sb_clone_mnt_opts =
1596 LIST_HEAD_INIT(security_hook_heads.sb_clone_mnt_opts),
1597 .sb_parse_opts_str =
1598 LIST_HEAD_INIT(security_hook_heads.sb_parse_opts_str),
1599 .dentry_init_security =
1600 LIST_HEAD_INIT(security_hook_heads.dentry_init_security),
1601#ifdef CONFIG_SECURITY_PATH
1602 .path_unlink = LIST_HEAD_INIT(security_hook_heads.path_unlink),
1603 .path_mkdir = LIST_HEAD_INIT(security_hook_heads.path_mkdir),
1604 .path_rmdir = LIST_HEAD_INIT(security_hook_heads.path_rmdir),
1605 .path_mknod = LIST_HEAD_INIT(security_hook_heads.path_mknod),
1606 .path_truncate =
1607 LIST_HEAD_INIT(security_hook_heads.path_truncate),
1608 .path_symlink = LIST_HEAD_INIT(security_hook_heads.path_symlink),
1609 .path_link = LIST_HEAD_INIT(security_hook_heads.path_link),
1610 .path_rename = LIST_HEAD_INIT(security_hook_heads.path_rename),
1611 .path_chmod = LIST_HEAD_INIT(security_hook_heads.path_chmod),
1612 .path_chown = LIST_HEAD_INIT(security_hook_heads.path_chown),
1613 .path_chroot = LIST_HEAD_INIT(security_hook_heads.path_chroot),
1614#endif
1615 .inode_alloc_security =
1616 LIST_HEAD_INIT(security_hook_heads.inode_alloc_security),
1617 .inode_free_security =
1618 LIST_HEAD_INIT(security_hook_heads.inode_free_security),
1619 .inode_init_security =
1620 LIST_HEAD_INIT(security_hook_heads.inode_init_security),
1621 .inode_create = LIST_HEAD_INIT(security_hook_heads.inode_create),
1622 .inode_link = LIST_HEAD_INIT(security_hook_heads.inode_link),
1623 .inode_unlink = LIST_HEAD_INIT(security_hook_heads.inode_unlink),
1624 .inode_symlink =
1625 LIST_HEAD_INIT(security_hook_heads.inode_symlink),
1626 .inode_mkdir = LIST_HEAD_INIT(security_hook_heads.inode_mkdir),
1627 .inode_rmdir = LIST_HEAD_INIT(security_hook_heads.inode_rmdir),
1628 .inode_mknod = LIST_HEAD_INIT(security_hook_heads.inode_mknod),
1629 .inode_rename = LIST_HEAD_INIT(security_hook_heads.inode_rename),
1630 .inode_readlink =
1631 LIST_HEAD_INIT(security_hook_heads.inode_readlink),
1632 .inode_follow_link =
1633 LIST_HEAD_INIT(security_hook_heads.inode_follow_link),
1634 .inode_permission =
1635 LIST_HEAD_INIT(security_hook_heads.inode_permission),
1636 .inode_setattr =
1637 LIST_HEAD_INIT(security_hook_heads.inode_setattr),
1638 .inode_getattr =
1639 LIST_HEAD_INIT(security_hook_heads.inode_getattr),
1640 .inode_setxattr =
1641 LIST_HEAD_INIT(security_hook_heads.inode_setxattr),
1642 .inode_post_setxattr =
1643 LIST_HEAD_INIT(security_hook_heads.inode_post_setxattr),
1644 .inode_getxattr =
1645 LIST_HEAD_INIT(security_hook_heads.inode_getxattr),
1646 .inode_listxattr =
1647 LIST_HEAD_INIT(security_hook_heads.inode_listxattr),
1648 .inode_removexattr =
1649 LIST_HEAD_INIT(security_hook_heads.inode_removexattr),
1650 .inode_need_killpriv =
1651 LIST_HEAD_INIT(security_hook_heads.inode_need_killpriv),
1652 .inode_killpriv =
1653 LIST_HEAD_INIT(security_hook_heads.inode_killpriv),
1654 .inode_getsecurity =
1655 LIST_HEAD_INIT(security_hook_heads.inode_getsecurity),
1656 .inode_setsecurity =
1657 LIST_HEAD_INIT(security_hook_heads.inode_setsecurity),
1658 .inode_listsecurity =
1659 LIST_HEAD_INIT(security_hook_heads.inode_listsecurity),
1660 .inode_getsecid =
1661 LIST_HEAD_INIT(security_hook_heads.inode_getsecid),
1662 .file_permission =
1663 LIST_HEAD_INIT(security_hook_heads.file_permission),
1664 .file_alloc_security =
1665 LIST_HEAD_INIT(security_hook_heads.file_alloc_security),
1666 .file_free_security =
1667 LIST_HEAD_INIT(security_hook_heads.file_free_security),
1668 .file_ioctl = LIST_HEAD_INIT(security_hook_heads.file_ioctl),
1669 .mmap_addr = LIST_HEAD_INIT(security_hook_heads.mmap_addr),
1670 .mmap_file = LIST_HEAD_INIT(security_hook_heads.mmap_file),
1671 .file_mprotect =
1672 LIST_HEAD_INIT(security_hook_heads.file_mprotect),
1673 .file_lock = LIST_HEAD_INIT(security_hook_heads.file_lock),
1674 .file_fcntl = LIST_HEAD_INIT(security_hook_heads.file_fcntl),
1675 .file_set_fowner =
1676 LIST_HEAD_INIT(security_hook_heads.file_set_fowner),
1677 .file_send_sigiotask =
1678 LIST_HEAD_INIT(security_hook_heads.file_send_sigiotask),
1679 .file_receive = LIST_HEAD_INIT(security_hook_heads.file_receive),
1680 .file_open = LIST_HEAD_INIT(security_hook_heads.file_open),
1681 .task_create = LIST_HEAD_INIT(security_hook_heads.task_create),
1682 .task_free = LIST_HEAD_INIT(security_hook_heads.task_free),
1683 .cred_alloc_blank =
1684 LIST_HEAD_INIT(security_hook_heads.cred_alloc_blank),
1685 .cred_free = LIST_HEAD_INIT(security_hook_heads.cred_free),
1686 .cred_prepare = LIST_HEAD_INIT(security_hook_heads.cred_prepare),
1687 .cred_transfer =
1688 LIST_HEAD_INIT(security_hook_heads.cred_transfer),
1689 .kernel_act_as =
1690 LIST_HEAD_INIT(security_hook_heads.kernel_act_as),
1691 .kernel_create_files_as =
1692 LIST_HEAD_INIT(security_hook_heads.kernel_create_files_as),
1693 .kernel_fw_from_file =
1694 LIST_HEAD_INIT(security_hook_heads.kernel_fw_from_file),
1695 .kernel_module_request =
1696 LIST_HEAD_INIT(security_hook_heads.kernel_module_request),
1697 .kernel_module_from_file =
1698 LIST_HEAD_INIT(security_hook_heads.kernel_module_from_file),
1699 .task_fix_setuid =
1700 LIST_HEAD_INIT(security_hook_heads.task_fix_setuid),
1701 .task_setpgid = LIST_HEAD_INIT(security_hook_heads.task_setpgid),
1702 .task_getpgid = LIST_HEAD_INIT(security_hook_heads.task_getpgid),
1703 .task_getsid = LIST_HEAD_INIT(security_hook_heads.task_getsid),
1704 .task_getsecid =
1705 LIST_HEAD_INIT(security_hook_heads.task_getsecid),
1706 .task_setnice = LIST_HEAD_INIT(security_hook_heads.task_setnice),
1707 .task_setioprio =
1708 LIST_HEAD_INIT(security_hook_heads.task_setioprio),
1709 .task_getioprio =
1710 LIST_HEAD_INIT(security_hook_heads.task_getioprio),
1711 .task_setrlimit =
1712 LIST_HEAD_INIT(security_hook_heads.task_setrlimit),
1713 .task_setscheduler =
1714 LIST_HEAD_INIT(security_hook_heads.task_setscheduler),
1715 .task_getscheduler =
1716 LIST_HEAD_INIT(security_hook_heads.task_getscheduler),
1717 .task_movememory =
1718 LIST_HEAD_INIT(security_hook_heads.task_movememory),
1719 .task_kill = LIST_HEAD_INIT(security_hook_heads.task_kill),
1720 .task_wait = LIST_HEAD_INIT(security_hook_heads.task_wait),
1721 .task_prctl = LIST_HEAD_INIT(security_hook_heads.task_prctl),
1722 .task_to_inode =
1723 LIST_HEAD_INIT(security_hook_heads.task_to_inode),
1724 .ipc_permission =
1725 LIST_HEAD_INIT(security_hook_heads.ipc_permission),
1726 .ipc_getsecid = LIST_HEAD_INIT(security_hook_heads.ipc_getsecid),
1727 .msg_msg_alloc_security =
1728 LIST_HEAD_INIT(security_hook_heads.msg_msg_alloc_security),
1729 .msg_msg_free_security =
1730 LIST_HEAD_INIT(security_hook_heads.msg_msg_free_security),
1731 .msg_queue_alloc_security =
1732 LIST_HEAD_INIT(security_hook_heads.msg_queue_alloc_security),
1733 .msg_queue_free_security =
1734 LIST_HEAD_INIT(security_hook_heads.msg_queue_free_security),
1735 .msg_queue_associate =
1736 LIST_HEAD_INIT(security_hook_heads.msg_queue_associate),
1737 .msg_queue_msgctl =
1738 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgctl),
1739 .msg_queue_msgsnd =
1740 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgsnd),
1741 .msg_queue_msgrcv =
1742 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgrcv),
1743 .shm_alloc_security =
1744 LIST_HEAD_INIT(security_hook_heads.shm_alloc_security),
1745 .shm_free_security =
1746 LIST_HEAD_INIT(security_hook_heads.shm_free_security),
1747 .shm_associate =
1748 LIST_HEAD_INIT(security_hook_heads.shm_associate),
1749 .shm_shmctl = LIST_HEAD_INIT(security_hook_heads.shm_shmctl),
1750 .shm_shmat = LIST_HEAD_INIT(security_hook_heads.shm_shmat),
1751 .sem_alloc_security =
1752 LIST_HEAD_INIT(security_hook_heads.sem_alloc_security),
1753 .sem_free_security =
1754 LIST_HEAD_INIT(security_hook_heads.sem_free_security),
1755 .sem_associate =
1756 LIST_HEAD_INIT(security_hook_heads.sem_associate),
1757 .sem_semctl = LIST_HEAD_INIT(security_hook_heads.sem_semctl),
1758 .sem_semop = LIST_HEAD_INIT(security_hook_heads.sem_semop),
1759 .netlink_send = LIST_HEAD_INIT(security_hook_heads.netlink_send),
1760 .d_instantiate =
1761 LIST_HEAD_INIT(security_hook_heads.d_instantiate),
1762 .getprocattr = LIST_HEAD_INIT(security_hook_heads.getprocattr),
1763 .setprocattr = LIST_HEAD_INIT(security_hook_heads.setprocattr),
1764 .ismaclabel = LIST_HEAD_INIT(security_hook_heads.ismaclabel),
1765 .secid_to_secctx =
1766 LIST_HEAD_INIT(security_hook_heads.secid_to_secctx),
1767 .secctx_to_secid =
1768 LIST_HEAD_INIT(security_hook_heads.secctx_to_secid),
1769 .release_secctx =
1770 LIST_HEAD_INIT(security_hook_heads.release_secctx),
1771 .inode_notifysecctx =
1772 LIST_HEAD_INIT(security_hook_heads.inode_notifysecctx),
1773 .inode_setsecctx =
1774 LIST_HEAD_INIT(security_hook_heads.inode_setsecctx),
1775 .inode_getsecctx =
1776 LIST_HEAD_INIT(security_hook_heads.inode_getsecctx),
1777#ifdef CONFIG_SECURITY_NETWORK
1778 .unix_stream_connect =
1779 LIST_HEAD_INIT(security_hook_heads.unix_stream_connect),
1780 .unix_may_send =
1781 LIST_HEAD_INIT(security_hook_heads.unix_may_send),
1782 .socket_create =
1783 LIST_HEAD_INIT(security_hook_heads.socket_create),
1784 .socket_post_create =
1785 LIST_HEAD_INIT(security_hook_heads.socket_post_create),
1786 .socket_bind = LIST_HEAD_INIT(security_hook_heads.socket_bind),
1787 .socket_connect =
1788 LIST_HEAD_INIT(security_hook_heads.socket_connect),
1789 .socket_listen =
1790 LIST_HEAD_INIT(security_hook_heads.socket_listen),
1791 .socket_accept =
1792 LIST_HEAD_INIT(security_hook_heads.socket_accept),
1793 .socket_sendmsg =
1794 LIST_HEAD_INIT(security_hook_heads.socket_sendmsg),
1795 .socket_recvmsg =
1796 LIST_HEAD_INIT(security_hook_heads.socket_recvmsg),
1797 .socket_getsockname =
1798 LIST_HEAD_INIT(security_hook_heads.socket_getsockname),
1799 .socket_getpeername =
1800 LIST_HEAD_INIT(security_hook_heads.socket_getpeername),
1801 .socket_getsockopt =
1802 LIST_HEAD_INIT(security_hook_heads.socket_getsockopt),
1803 .socket_setsockopt =
1804 LIST_HEAD_INIT(security_hook_heads.socket_setsockopt),
1805 .socket_shutdown =
1806 LIST_HEAD_INIT(security_hook_heads.socket_shutdown),
1807 .socket_sock_rcv_skb =
1808 LIST_HEAD_INIT(security_hook_heads.socket_sock_rcv_skb),
1809 .socket_getpeersec_stream =
1810 LIST_HEAD_INIT(security_hook_heads.socket_getpeersec_stream),
1811 .socket_getpeersec_dgram =
1812 LIST_HEAD_INIT(security_hook_heads.socket_getpeersec_dgram),
1813 .sk_alloc_security =
1814 LIST_HEAD_INIT(security_hook_heads.sk_alloc_security),
1815 .sk_free_security =
1816 LIST_HEAD_INIT(security_hook_heads.sk_free_security),
1817 .sk_clone_security =
1818 LIST_HEAD_INIT(security_hook_heads.sk_clone_security),
1819 .sk_getsecid = LIST_HEAD_INIT(security_hook_heads.sk_getsecid),
1820 .sock_graft = LIST_HEAD_INIT(security_hook_heads.sock_graft),
1821 .inet_conn_request =
1822 LIST_HEAD_INIT(security_hook_heads.inet_conn_request),
1823 .inet_csk_clone =
1824 LIST_HEAD_INIT(security_hook_heads.inet_csk_clone),
1825 .inet_conn_established =
1826 LIST_HEAD_INIT(security_hook_heads.inet_conn_established),
1827 .secmark_relabel_packet =
1828 LIST_HEAD_INIT(security_hook_heads.secmark_relabel_packet),
1829 .secmark_refcount_inc =
1830 LIST_HEAD_INIT(security_hook_heads.secmark_refcount_inc),
1831 .secmark_refcount_dec =
1832 LIST_HEAD_INIT(security_hook_heads.secmark_refcount_dec),
1833 .req_classify_flow =
1834 LIST_HEAD_INIT(security_hook_heads.req_classify_flow),
1835 .tun_dev_alloc_security =
1836 LIST_HEAD_INIT(security_hook_heads.tun_dev_alloc_security),
1837 .tun_dev_free_security =
1838 LIST_HEAD_INIT(security_hook_heads.tun_dev_free_security),
1839 .tun_dev_create =
1840 LIST_HEAD_INIT(security_hook_heads.tun_dev_create),
1841 .tun_dev_attach_queue =
1842 LIST_HEAD_INIT(security_hook_heads.tun_dev_attach_queue),
1843 .tun_dev_attach =
1844 LIST_HEAD_INIT(security_hook_heads.tun_dev_attach),
1845 .tun_dev_open = LIST_HEAD_INIT(security_hook_heads.tun_dev_open),
1846 .skb_owned_by = LIST_HEAD_INIT(security_hook_heads.skb_owned_by),
1847#endif /* CONFIG_SECURITY_NETWORK */
1848#ifdef CONFIG_SECURITY_NETWORK_XFRM
1849 .xfrm_policy_alloc_security =
1850 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_alloc_security),
1851 .xfrm_policy_clone_security =
1852 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_clone_security),
1853 .xfrm_policy_free_security =
1854 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_free_security),
1855 .xfrm_policy_delete_security =
1856 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_delete_security),
1857 .xfrm_state_alloc =
1858 LIST_HEAD_INIT(security_hook_heads.xfrm_state_alloc),
1859 .xfrm_state_alloc_acquire =
1860 LIST_HEAD_INIT(security_hook_heads.xfrm_state_alloc_acquire),
1861 .xfrm_state_free_security =
1862 LIST_HEAD_INIT(security_hook_heads.xfrm_state_free_security),
1863 .xfrm_state_delete_security =
1864 LIST_HEAD_INIT(security_hook_heads.xfrm_state_delete_security),
1865 .xfrm_policy_lookup =
1866 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_lookup),
1867 .xfrm_state_pol_flow_match =
1868 LIST_HEAD_INIT(security_hook_heads.xfrm_state_pol_flow_match),
1869 .xfrm_decode_session =
1870 LIST_HEAD_INIT(security_hook_heads.xfrm_decode_session),
1871#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1872#ifdef CONFIG_KEYS
1873 .key_alloc = LIST_HEAD_INIT(security_hook_heads.key_alloc),
1874 .key_free = LIST_HEAD_INIT(security_hook_heads.key_free),
1875 .key_permission =
1876 LIST_HEAD_INIT(security_hook_heads.key_permission),
1877 .key_getsecurity =
1878 LIST_HEAD_INIT(security_hook_heads.key_getsecurity),
1879#endif /* CONFIG_KEYS */
1880#ifdef CONFIG_AUDIT
1881 .audit_rule_init =
1882 LIST_HEAD_INIT(security_hook_heads.audit_rule_init),
1883 .audit_rule_known =
1884 LIST_HEAD_INIT(security_hook_heads.audit_rule_known),
1885 .audit_rule_match =
1886 LIST_HEAD_INIT(security_hook_heads.audit_rule_match),
1887 .audit_rule_free =
1888 LIST_HEAD_INIT(security_hook_heads.audit_rule_free),
1889#endif /* CONFIG_AUDIT */
1890};