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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/security.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/* Boot-time LSM user choice */
33static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
34 CONFIG_DEFAULT_SECURITY;
35
36static struct security_operations *security_ops;
37static struct security_operations default_security_ops = {
38 .name = "default",
39};
40
41static inline int __init verify(struct security_operations *ops)
42{
43 /* verify the security_operations structure exists */
44 if (!ops)
45 return -EINVAL;
46 security_fixup_ops(ops);
47 return 0;
48}
49
50static void __init do_security_initcalls(void)
51{
52 initcall_t *call;
53 call = __security_initcall_start;
54 while (call < __security_initcall_end) {
55 (*call) ();
56 call++;
57 }
58}
59
60/**
61 * security_init - initializes the security framework
62 *
63 * This should be called early in the kernel initialization sequence.
64 */
65int __init security_init(void)
66{
67 printk(KERN_INFO "Security Framework initialized\n");
68
69 security_fixup_ops(&default_security_ops);
70 security_ops = &default_security_ops;
71 do_security_initcalls();
72
73 return 0;
74}
75
76void reset_security_ops(void)
77{
78 security_ops = &default_security_ops;
79}
80
81/* Save user chosen LSM */
82static int __init choose_lsm(char *str)
83{
84 strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
85 return 1;
86}
87__setup("security=", choose_lsm);
88
89/**
90 * security_module_enable - Load given security module on boot ?
91 * @ops: a pointer to the struct security_operations that is to be checked.
92 *
93 * Each LSM must pass this method before registering its own operations
94 * to avoid security registration races. This method may also be used
95 * to check if your LSM is currently loaded during kernel initialization.
96 *
97 * Return true if:
98 * -The passed LSM is the one chosen by user at boot time,
99 * -or the passed LSM is configured as the default and the user did not
100 * choose an alternate LSM at boot time.
101 * Otherwise, return false.
102 */
103int __init security_module_enable(struct security_operations *ops)
104{
105 return !strcmp(ops->name, chosen_lsm);
106}
107
108/**
109 * register_security - registers a security framework with the kernel
110 * @ops: a pointer to the struct security_options that is to be registered
111 *
112 * This function allows a security module to register itself with the
113 * kernel security subsystem. Some rudimentary checking is done on the @ops
114 * value passed to this function. You'll need to check first if your LSM
115 * is allowed to register its @ops by calling security_module_enable(@ops).
116 *
117 * If there is already a security module registered with the kernel,
118 * an error will be returned. Otherwise %0 is returned on success.
119 */
120int __init register_security(struct security_operations *ops)
121{
122 if (verify(ops)) {
123 printk(KERN_DEBUG "%s could not verify "
124 "security_operations structure.\n", __func__);
125 return -EINVAL;
126 }
127
128 if (security_ops != &default_security_ops)
129 return -EAGAIN;
130
131 security_ops = ops;
132
133 return 0;
134}
135
136/* Security operations */
137
138int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
139{
140#ifdef CONFIG_SECURITY_YAMA_STACKED
141 int rc;
142 rc = yama_ptrace_access_check(child, mode);
143 if (rc)
144 return rc;
145#endif
146 return security_ops->ptrace_access_check(child, mode);
147}
148
149int security_ptrace_traceme(struct task_struct *parent)
150{
151#ifdef CONFIG_SECURITY_YAMA_STACKED
152 int rc;
153 rc = yama_ptrace_traceme(parent);
154 if (rc)
155 return rc;
156#endif
157 return security_ops->ptrace_traceme(parent);
158}
159
160int security_capget(struct task_struct *target,
161 kernel_cap_t *effective,
162 kernel_cap_t *inheritable,
163 kernel_cap_t *permitted)
164{
165 return security_ops->capget(target, effective, inheritable, permitted);
166}
167
168int security_capset(struct cred *new, const struct cred *old,
169 const kernel_cap_t *effective,
170 const kernel_cap_t *inheritable,
171 const kernel_cap_t *permitted)
172{
173 return security_ops->capset(new, old,
174 effective, inheritable, permitted);
175}
176
177int security_capable(const struct cred *cred, struct user_namespace *ns,
178 int cap)
179{
180 return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT);
181}
182
183int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
184 int cap)
185{
186 return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
187}
188
189int security_quotactl(int cmds, int type, int id, struct super_block *sb)
190{
191 return security_ops->quotactl(cmds, type, id, sb);
192}
193
194int security_quota_on(struct dentry *dentry)
195{
196 return security_ops->quota_on(dentry);
197}
198
199int security_syslog(int type)
200{
201 return security_ops->syslog(type);
202}
203
204int security_settime(const struct timespec *ts, const struct timezone *tz)
205{
206 return security_ops->settime(ts, tz);
207}
208
209int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
210{
211 return security_ops->vm_enough_memory(mm, pages);
212}
213
214int security_bprm_set_creds(struct linux_binprm *bprm)
215{
216 return security_ops->bprm_set_creds(bprm);
217}
218
219int security_bprm_check(struct linux_binprm *bprm)
220{
221 int ret;
222
223 ret = security_ops->bprm_check_security(bprm);
224 if (ret)
225 return ret;
226 return ima_bprm_check(bprm);
227}
228
229void security_bprm_committing_creds(struct linux_binprm *bprm)
230{
231 security_ops->bprm_committing_creds(bprm);
232}
233
234void security_bprm_committed_creds(struct linux_binprm *bprm)
235{
236 security_ops->bprm_committed_creds(bprm);
237}
238
239int security_bprm_secureexec(struct linux_binprm *bprm)
240{
241 return security_ops->bprm_secureexec(bprm);
242}
243
244int security_sb_alloc(struct super_block *sb)
245{
246 return security_ops->sb_alloc_security(sb);
247}
248
249void security_sb_free(struct super_block *sb)
250{
251 security_ops->sb_free_security(sb);
252}
253
254int security_sb_copy_data(char *orig, char *copy)
255{
256 return security_ops->sb_copy_data(orig, copy);
257}
258EXPORT_SYMBOL(security_sb_copy_data);
259
260int security_sb_remount(struct super_block *sb, void *data)
261{
262 return security_ops->sb_remount(sb, data);
263}
264
265int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
266{
267 return security_ops->sb_kern_mount(sb, flags, data);
268}
269
270int security_sb_show_options(struct seq_file *m, struct super_block *sb)
271{
272 return security_ops->sb_show_options(m, sb);
273}
274
275int security_sb_statfs(struct dentry *dentry)
276{
277 return security_ops->sb_statfs(dentry);
278}
279
280int security_sb_mount(const char *dev_name, struct path *path,
281 const char *type, unsigned long flags, void *data)
282{
283 return security_ops->sb_mount(dev_name, path, type, flags, data);
284}
285
286int security_sb_umount(struct vfsmount *mnt, int flags)
287{
288 return security_ops->sb_umount(mnt, flags);
289}
290
291int security_sb_pivotroot(struct path *old_path, struct path *new_path)
292{
293 return security_ops->sb_pivotroot(old_path, new_path);
294}
295
296int security_sb_set_mnt_opts(struct super_block *sb,
297 struct security_mnt_opts *opts,
298 unsigned long kern_flags,
299 unsigned long *set_kern_flags)
300{
301 return security_ops->sb_set_mnt_opts(sb, opts, kern_flags,
302 set_kern_flags);
303}
304EXPORT_SYMBOL(security_sb_set_mnt_opts);
305
306int security_sb_clone_mnt_opts(const struct super_block *oldsb,
307 struct super_block *newsb)
308{
309 return security_ops->sb_clone_mnt_opts(oldsb, newsb);
310}
311EXPORT_SYMBOL(security_sb_clone_mnt_opts);
312
313int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
314{
315 return security_ops->sb_parse_opts_str(options, opts);
316}
317EXPORT_SYMBOL(security_sb_parse_opts_str);
318
319int security_inode_alloc(struct inode *inode)
320{
321 inode->i_security = NULL;
322 return security_ops->inode_alloc_security(inode);
323}
324
325void security_inode_free(struct inode *inode)
326{
327 integrity_inode_free(inode);
328 security_ops->inode_free_security(inode);
329}
330
331int security_dentry_init_security(struct dentry *dentry, int mode,
332 struct qstr *name, void **ctx,
333 u32 *ctxlen)
334{
335 return security_ops->dentry_init_security(dentry, mode, name,
336 ctx, ctxlen);
337}
338EXPORT_SYMBOL(security_dentry_init_security);
339
340int security_inode_init_security(struct inode *inode, struct inode *dir,
341 const struct qstr *qstr,
342 const initxattrs initxattrs, void *fs_data)
343{
344 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
345 struct xattr *lsm_xattr, *evm_xattr, *xattr;
346 int ret;
347
348 if (unlikely(IS_PRIVATE(inode)))
349 return 0;
350
351 if (!initxattrs)
352 return security_ops->inode_init_security(inode, dir, qstr,
353 NULL, NULL, NULL);
354 memset(new_xattrs, 0, sizeof(new_xattrs));
355 lsm_xattr = new_xattrs;
356 ret = security_ops->inode_init_security(inode, dir, qstr,
357 &lsm_xattr->name,
358 &lsm_xattr->value,
359 &lsm_xattr->value_len);
360 if (ret)
361 goto out;
362
363 evm_xattr = lsm_xattr + 1;
364 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
365 if (ret)
366 goto out;
367 ret = initxattrs(inode, new_xattrs, fs_data);
368out:
369 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
370 kfree(xattr->value);
371 return (ret == -EOPNOTSUPP) ? 0 : ret;
372}
373EXPORT_SYMBOL(security_inode_init_security);
374
375int security_old_inode_init_security(struct inode *inode, struct inode *dir,
376 const struct qstr *qstr, const char **name,
377 void **value, size_t *len)
378{
379 if (unlikely(IS_PRIVATE(inode)))
380 return -EOPNOTSUPP;
381 return security_ops->inode_init_security(inode, dir, qstr, name, value,
382 len);
383}
384EXPORT_SYMBOL(security_old_inode_init_security);
385
386#ifdef CONFIG_SECURITY_PATH
387int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
388 unsigned int dev)
389{
390 if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
391 return 0;
392 return security_ops->path_mknod(dir, dentry, mode, dev);
393}
394EXPORT_SYMBOL(security_path_mknod);
395
396int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
397{
398 if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
399 return 0;
400 return security_ops->path_mkdir(dir, dentry, mode);
401}
402EXPORT_SYMBOL(security_path_mkdir);
403
404int security_path_rmdir(struct path *dir, struct dentry *dentry)
405{
406 if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
407 return 0;
408 return security_ops->path_rmdir(dir, dentry);
409}
410
411int security_path_unlink(struct path *dir, struct dentry *dentry)
412{
413 if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
414 return 0;
415 return security_ops->path_unlink(dir, dentry);
416}
417EXPORT_SYMBOL(security_path_unlink);
418
419int security_path_symlink(struct path *dir, struct dentry *dentry,
420 const char *old_name)
421{
422 if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
423 return 0;
424 return security_ops->path_symlink(dir, dentry, old_name);
425}
426
427int security_path_link(struct dentry *old_dentry, struct path *new_dir,
428 struct dentry *new_dentry)
429{
430 if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
431 return 0;
432 return security_ops->path_link(old_dentry, new_dir, new_dentry);
433}
434
435int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
436 struct path *new_dir, struct dentry *new_dentry,
437 unsigned int flags)
438{
439 if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
440 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
441 return 0;
442
443 if (flags & RENAME_EXCHANGE) {
444 int err = security_ops->path_rename(new_dir, new_dentry,
445 old_dir, old_dentry);
446 if (err)
447 return err;
448 }
449
450 return security_ops->path_rename(old_dir, old_dentry, new_dir,
451 new_dentry);
452}
453EXPORT_SYMBOL(security_path_rename);
454
455int security_path_truncate(struct path *path)
456{
457 if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
458 return 0;
459 return security_ops->path_truncate(path);
460}
461
462int security_path_chmod(struct path *path, umode_t mode)
463{
464 if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
465 return 0;
466 return security_ops->path_chmod(path, mode);
467}
468
469int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
470{
471 if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
472 return 0;
473 return security_ops->path_chown(path, uid, gid);
474}
475
476int security_path_chroot(struct path *path)
477{
478 return security_ops->path_chroot(path);
479}
480#endif
481
482int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
483{
484 if (unlikely(IS_PRIVATE(dir)))
485 return 0;
486 return security_ops->inode_create(dir, dentry, mode);
487}
488EXPORT_SYMBOL_GPL(security_inode_create);
489
490int security_inode_link(struct dentry *old_dentry, struct inode *dir,
491 struct dentry *new_dentry)
492{
493 if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
494 return 0;
495 return security_ops->inode_link(old_dentry, dir, new_dentry);
496}
497
498int security_inode_unlink(struct inode *dir, struct dentry *dentry)
499{
500 if (unlikely(IS_PRIVATE(dentry->d_inode)))
501 return 0;
502 return security_ops->inode_unlink(dir, dentry);
503}
504
505int security_inode_symlink(struct inode *dir, struct dentry *dentry,
506 const char *old_name)
507{
508 if (unlikely(IS_PRIVATE(dir)))
509 return 0;
510 return security_ops->inode_symlink(dir, dentry, old_name);
511}
512
513int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
514{
515 if (unlikely(IS_PRIVATE(dir)))
516 return 0;
517 return security_ops->inode_mkdir(dir, dentry, mode);
518}
519EXPORT_SYMBOL_GPL(security_inode_mkdir);
520
521int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
522{
523 if (unlikely(IS_PRIVATE(dentry->d_inode)))
524 return 0;
525 return security_ops->inode_rmdir(dir, dentry);
526}
527
528int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
529{
530 if (unlikely(IS_PRIVATE(dir)))
531 return 0;
532 return security_ops->inode_mknod(dir, dentry, mode, dev);
533}
534
535int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
536 struct inode *new_dir, struct dentry *new_dentry,
537 unsigned int flags)
538{
539 if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
540 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
541 return 0;
542
543 if (flags & RENAME_EXCHANGE) {
544 int err = security_ops->inode_rename(new_dir, new_dentry,
545 old_dir, old_dentry);
546 if (err)
547 return err;
548 }
549
550 return security_ops->inode_rename(old_dir, old_dentry,
551 new_dir, new_dentry);
552}
553
554int security_inode_readlink(struct dentry *dentry)
555{
556 if (unlikely(IS_PRIVATE(dentry->d_inode)))
557 return 0;
558 return security_ops->inode_readlink(dentry);
559}
560
561int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
562{
563 if (unlikely(IS_PRIVATE(dentry->d_inode)))
564 return 0;
565 return security_ops->inode_follow_link(dentry, nd);
566}
567
568int security_inode_permission(struct inode *inode, int mask)
569{
570 if (unlikely(IS_PRIVATE(inode)))
571 return 0;
572 return security_ops->inode_permission(inode, mask);
573}
574
575int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
576{
577 int ret;
578
579 if (unlikely(IS_PRIVATE(dentry->d_inode)))
580 return 0;
581 ret = security_ops->inode_setattr(dentry, attr);
582 if (ret)
583 return ret;
584 return evm_inode_setattr(dentry, attr);
585}
586EXPORT_SYMBOL_GPL(security_inode_setattr);
587
588int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
589{
590 if (unlikely(IS_PRIVATE(dentry->d_inode)))
591 return 0;
592 return security_ops->inode_getattr(mnt, dentry);
593}
594
595int security_inode_setxattr(struct dentry *dentry, const char *name,
596 const void *value, size_t size, int flags)
597{
598 int ret;
599
600 if (unlikely(IS_PRIVATE(dentry->d_inode)))
601 return 0;
602 ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
603 if (ret)
604 return ret;
605 ret = ima_inode_setxattr(dentry, name, value, size);
606 if (ret)
607 return ret;
608 return evm_inode_setxattr(dentry, name, value, size);
609}
610
611void security_inode_post_setxattr(struct dentry *dentry, const char *name,
612 const void *value, size_t size, int flags)
613{
614 if (unlikely(IS_PRIVATE(dentry->d_inode)))
615 return;
616 security_ops->inode_post_setxattr(dentry, name, value, size, flags);
617 evm_inode_post_setxattr(dentry, name, value, size);
618}
619
620int security_inode_getxattr(struct dentry *dentry, const char *name)
621{
622 if (unlikely(IS_PRIVATE(dentry->d_inode)))
623 return 0;
624 return security_ops->inode_getxattr(dentry, name);
625}
626
627int security_inode_listxattr(struct dentry *dentry)
628{
629 if (unlikely(IS_PRIVATE(dentry->d_inode)))
630 return 0;
631 return security_ops->inode_listxattr(dentry);
632}
633
634int security_inode_removexattr(struct dentry *dentry, const char *name)
635{
636 int ret;
637
638 if (unlikely(IS_PRIVATE(dentry->d_inode)))
639 return 0;
640 ret = security_ops->inode_removexattr(dentry, name);
641 if (ret)
642 return ret;
643 ret = ima_inode_removexattr(dentry, name);
644 if (ret)
645 return ret;
646 return evm_inode_removexattr(dentry, name);
647}
648
649int security_inode_need_killpriv(struct dentry *dentry)
650{
651 return security_ops->inode_need_killpriv(dentry);
652}
653
654int security_inode_killpriv(struct dentry *dentry)
655{
656 return security_ops->inode_killpriv(dentry);
657}
658
659int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
660{
661 if (unlikely(IS_PRIVATE(inode)))
662 return -EOPNOTSUPP;
663 return security_ops->inode_getsecurity(inode, name, buffer, alloc);
664}
665
666int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
667{
668 if (unlikely(IS_PRIVATE(inode)))
669 return -EOPNOTSUPP;
670 return security_ops->inode_setsecurity(inode, name, value, size, flags);
671}
672
673int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
674{
675 if (unlikely(IS_PRIVATE(inode)))
676 return 0;
677 return security_ops->inode_listsecurity(inode, buffer, buffer_size);
678}
679EXPORT_SYMBOL(security_inode_listsecurity);
680
681void security_inode_getsecid(const struct inode *inode, u32 *secid)
682{
683 security_ops->inode_getsecid(inode, secid);
684}
685
686int security_file_permission(struct file *file, int mask)
687{
688 int ret;
689
690 ret = security_ops->file_permission(file, mask);
691 if (ret)
692 return ret;
693
694 return fsnotify_perm(file, mask);
695}
696
697int security_file_alloc(struct file *file)
698{
699 return security_ops->file_alloc_security(file);
700}
701
702void security_file_free(struct file *file)
703{
704 security_ops->file_free_security(file);
705}
706
707int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
708{
709 return security_ops->file_ioctl(file, cmd, arg);
710}
711
712static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
713{
714 /*
715 * Does we have PROT_READ and does the application expect
716 * it to imply PROT_EXEC? If not, nothing to talk about...
717 */
718 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
719 return prot;
720 if (!(current->personality & READ_IMPLIES_EXEC))
721 return prot;
722 /*
723 * if that's an anonymous mapping, let it.
724 */
725 if (!file)
726 return prot | PROT_EXEC;
727 /*
728 * ditto if it's not on noexec mount, except that on !MMU we need
729 * BDI_CAP_EXEC_MMAP (== VM_MAYEXEC) in this case
730 */
731 if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) {
732#ifndef CONFIG_MMU
733 unsigned long caps = 0;
734 struct address_space *mapping = file->f_mapping;
735 if (mapping && mapping->backing_dev_info)
736 caps = mapping->backing_dev_info->capabilities;
737 if (!(caps & BDI_CAP_EXEC_MAP))
738 return prot;
739#endif
740 return prot | PROT_EXEC;
741 }
742 /* anything on noexec mount won't get PROT_EXEC */
743 return prot;
744}
745
746int security_mmap_file(struct file *file, unsigned long prot,
747 unsigned long flags)
748{
749 int ret;
750 ret = security_ops->mmap_file(file, prot,
751 mmap_prot(file, prot), flags);
752 if (ret)
753 return ret;
754 return ima_file_mmap(file, prot);
755}
756
757int security_mmap_addr(unsigned long addr)
758{
759 return security_ops->mmap_addr(addr);
760}
761
762int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
763 unsigned long prot)
764{
765 return security_ops->file_mprotect(vma, reqprot, prot);
766}
767
768int security_file_lock(struct file *file, unsigned int cmd)
769{
770 return security_ops->file_lock(file, cmd);
771}
772
773int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
774{
775 return security_ops->file_fcntl(file, cmd, arg);
776}
777
778int security_file_set_fowner(struct file *file)
779{
780 return security_ops->file_set_fowner(file);
781}
782
783int security_file_send_sigiotask(struct task_struct *tsk,
784 struct fown_struct *fown, int sig)
785{
786 return security_ops->file_send_sigiotask(tsk, fown, sig);
787}
788
789int security_file_receive(struct file *file)
790{
791 return security_ops->file_receive(file);
792}
793
794int security_file_open(struct file *file, const struct cred *cred)
795{
796 int ret;
797
798 ret = security_ops->file_open(file, cred);
799 if (ret)
800 return ret;
801
802 return fsnotify_perm(file, MAY_OPEN);
803}
804
805int security_task_create(unsigned long clone_flags)
806{
807 return security_ops->task_create(clone_flags);
808}
809
810void security_task_free(struct task_struct *task)
811{
812#ifdef CONFIG_SECURITY_YAMA_STACKED
813 yama_task_free(task);
814#endif
815 security_ops->task_free(task);
816}
817
818int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
819{
820 return security_ops->cred_alloc_blank(cred, gfp);
821}
822
823void security_cred_free(struct cred *cred)
824{
825 security_ops->cred_free(cred);
826}
827
828int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
829{
830 return security_ops->cred_prepare(new, old, gfp);
831}
832
833void security_transfer_creds(struct cred *new, const struct cred *old)
834{
835 security_ops->cred_transfer(new, old);
836}
837
838int security_kernel_act_as(struct cred *new, u32 secid)
839{
840 return security_ops->kernel_act_as(new, secid);
841}
842
843int security_kernel_create_files_as(struct cred *new, struct inode *inode)
844{
845 return security_ops->kernel_create_files_as(new, inode);
846}
847
848int security_kernel_module_request(char *kmod_name)
849{
850 return security_ops->kernel_module_request(kmod_name);
851}
852
853int security_kernel_module_from_file(struct file *file)
854{
855 int ret;
856
857 ret = security_ops->kernel_module_from_file(file);
858 if (ret)
859 return ret;
860 return ima_module_check(file);
861}
862
863int security_task_fix_setuid(struct cred *new, const struct cred *old,
864 int flags)
865{
866 return security_ops->task_fix_setuid(new, old, flags);
867}
868
869int security_task_setpgid(struct task_struct *p, pid_t pgid)
870{
871 return security_ops->task_setpgid(p, pgid);
872}
873
874int security_task_getpgid(struct task_struct *p)
875{
876 return security_ops->task_getpgid(p);
877}
878
879int security_task_getsid(struct task_struct *p)
880{
881 return security_ops->task_getsid(p);
882}
883
884void security_task_getsecid(struct task_struct *p, u32 *secid)
885{
886 security_ops->task_getsecid(p, secid);
887}
888EXPORT_SYMBOL(security_task_getsecid);
889
890int security_task_setnice(struct task_struct *p, int nice)
891{
892 return security_ops->task_setnice(p, nice);
893}
894
895int security_task_setioprio(struct task_struct *p, int ioprio)
896{
897 return security_ops->task_setioprio(p, ioprio);
898}
899
900int security_task_getioprio(struct task_struct *p)
901{
902 return security_ops->task_getioprio(p);
903}
904
905int security_task_setrlimit(struct task_struct *p, unsigned int resource,
906 struct rlimit *new_rlim)
907{
908 return security_ops->task_setrlimit(p, resource, new_rlim);
909}
910
911int security_task_setscheduler(struct task_struct *p)
912{
913 return security_ops->task_setscheduler(p);
914}
915
916int security_task_getscheduler(struct task_struct *p)
917{
918 return security_ops->task_getscheduler(p);
919}
920
921int security_task_movememory(struct task_struct *p)
922{
923 return security_ops->task_movememory(p);
924}
925
926int security_task_kill(struct task_struct *p, struct siginfo *info,
927 int sig, u32 secid)
928{
929 return security_ops->task_kill(p, info, sig, secid);
930}
931
932int security_task_wait(struct task_struct *p)
933{
934 return security_ops->task_wait(p);
935}
936
937int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
938 unsigned long arg4, unsigned long arg5)
939{
940#ifdef CONFIG_SECURITY_YAMA_STACKED
941 int rc;
942 rc = yama_task_prctl(option, arg2, arg3, arg4, arg5);
943 if (rc != -ENOSYS)
944 return rc;
945#endif
946 return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
947}
948
949void security_task_to_inode(struct task_struct *p, struct inode *inode)
950{
951 security_ops->task_to_inode(p, inode);
952}
953
954int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
955{
956 return security_ops->ipc_permission(ipcp, flag);
957}
958
959void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
960{
961 security_ops->ipc_getsecid(ipcp, secid);
962}
963
964int security_msg_msg_alloc(struct msg_msg *msg)
965{
966 return security_ops->msg_msg_alloc_security(msg);
967}
968
969void security_msg_msg_free(struct msg_msg *msg)
970{
971 security_ops->msg_msg_free_security(msg);
972}
973
974int security_msg_queue_alloc(struct msg_queue *msq)
975{
976 return security_ops->msg_queue_alloc_security(msq);
977}
978
979void security_msg_queue_free(struct msg_queue *msq)
980{
981 security_ops->msg_queue_free_security(msq);
982}
983
984int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
985{
986 return security_ops->msg_queue_associate(msq, msqflg);
987}
988
989int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
990{
991 return security_ops->msg_queue_msgctl(msq, cmd);
992}
993
994int security_msg_queue_msgsnd(struct msg_queue *msq,
995 struct msg_msg *msg, int msqflg)
996{
997 return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
998}
999
1000int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1001 struct task_struct *target, long type, int mode)
1002{
1003 return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
1004}
1005
1006int security_shm_alloc(struct shmid_kernel *shp)
1007{
1008 return security_ops->shm_alloc_security(shp);
1009}
1010
1011void security_shm_free(struct shmid_kernel *shp)
1012{
1013 security_ops->shm_free_security(shp);
1014}
1015
1016int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1017{
1018 return security_ops->shm_associate(shp, shmflg);
1019}
1020
1021int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1022{
1023 return security_ops->shm_shmctl(shp, cmd);
1024}
1025
1026int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1027{
1028 return security_ops->shm_shmat(shp, shmaddr, shmflg);
1029}
1030
1031int security_sem_alloc(struct sem_array *sma)
1032{
1033 return security_ops->sem_alloc_security(sma);
1034}
1035
1036void security_sem_free(struct sem_array *sma)
1037{
1038 security_ops->sem_free_security(sma);
1039}
1040
1041int security_sem_associate(struct sem_array *sma, int semflg)
1042{
1043 return security_ops->sem_associate(sma, semflg);
1044}
1045
1046int security_sem_semctl(struct sem_array *sma, int cmd)
1047{
1048 return security_ops->sem_semctl(sma, cmd);
1049}
1050
1051int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1052 unsigned nsops, int alter)
1053{
1054 return security_ops->sem_semop(sma, sops, nsops, alter);
1055}
1056
1057void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1058{
1059 if (unlikely(inode && IS_PRIVATE(inode)))
1060 return;
1061 security_ops->d_instantiate(dentry, inode);
1062}
1063EXPORT_SYMBOL(security_d_instantiate);
1064
1065int security_getprocattr(struct task_struct *p, char *name, char **value)
1066{
1067 return security_ops->getprocattr(p, name, value);
1068}
1069
1070int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1071{
1072 return security_ops->setprocattr(p, name, value, size);
1073}
1074
1075int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1076{
1077 return security_ops->netlink_send(sk, skb);
1078}
1079
1080int security_ismaclabel(const char *name)
1081{
1082 return security_ops->ismaclabel(name);
1083}
1084EXPORT_SYMBOL(security_ismaclabel);
1085
1086int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1087{
1088 return security_ops->secid_to_secctx(secid, secdata, seclen);
1089}
1090EXPORT_SYMBOL(security_secid_to_secctx);
1091
1092int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1093{
1094 return security_ops->secctx_to_secid(secdata, seclen, secid);
1095}
1096EXPORT_SYMBOL(security_secctx_to_secid);
1097
1098void security_release_secctx(char *secdata, u32 seclen)
1099{
1100 security_ops->release_secctx(secdata, seclen);
1101}
1102EXPORT_SYMBOL(security_release_secctx);
1103
1104int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1105{
1106 return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1107}
1108EXPORT_SYMBOL(security_inode_notifysecctx);
1109
1110int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1111{
1112 return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1113}
1114EXPORT_SYMBOL(security_inode_setsecctx);
1115
1116int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1117{
1118 return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1119}
1120EXPORT_SYMBOL(security_inode_getsecctx);
1121
1122#ifdef CONFIG_SECURITY_NETWORK
1123
1124int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1125{
1126 return security_ops->unix_stream_connect(sock, other, newsk);
1127}
1128EXPORT_SYMBOL(security_unix_stream_connect);
1129
1130int security_unix_may_send(struct socket *sock, struct socket *other)
1131{
1132 return security_ops->unix_may_send(sock, other);
1133}
1134EXPORT_SYMBOL(security_unix_may_send);
1135
1136int security_socket_create(int family, int type, int protocol, int kern)
1137{
1138 return security_ops->socket_create(family, type, protocol, kern);
1139}
1140
1141int security_socket_post_create(struct socket *sock, int family,
1142 int type, int protocol, int kern)
1143{
1144 return security_ops->socket_post_create(sock, family, type,
1145 protocol, kern);
1146}
1147
1148int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1149{
1150 return security_ops->socket_bind(sock, address, addrlen);
1151}
1152
1153int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1154{
1155 return security_ops->socket_connect(sock, address, addrlen);
1156}
1157
1158int security_socket_listen(struct socket *sock, int backlog)
1159{
1160 return security_ops->socket_listen(sock, backlog);
1161}
1162
1163int security_socket_accept(struct socket *sock, struct socket *newsock)
1164{
1165 return security_ops->socket_accept(sock, newsock);
1166}
1167
1168int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1169{
1170 return security_ops->socket_sendmsg(sock, msg, size);
1171}
1172
1173int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1174 int size, int flags)
1175{
1176 return security_ops->socket_recvmsg(sock, msg, size, flags);
1177}
1178
1179int security_socket_getsockname(struct socket *sock)
1180{
1181 return security_ops->socket_getsockname(sock);
1182}
1183
1184int security_socket_getpeername(struct socket *sock)
1185{
1186 return security_ops->socket_getpeername(sock);
1187}
1188
1189int security_socket_getsockopt(struct socket *sock, int level, int optname)
1190{
1191 return security_ops->socket_getsockopt(sock, level, optname);
1192}
1193
1194int security_socket_setsockopt(struct socket *sock, int level, int optname)
1195{
1196 return security_ops->socket_setsockopt(sock, level, optname);
1197}
1198
1199int security_socket_shutdown(struct socket *sock, int how)
1200{
1201 return security_ops->socket_shutdown(sock, how);
1202}
1203
1204int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1205{
1206 return security_ops->socket_sock_rcv_skb(sk, skb);
1207}
1208EXPORT_SYMBOL(security_sock_rcv_skb);
1209
1210int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1211 int __user *optlen, unsigned len)
1212{
1213 return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1214}
1215
1216int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1217{
1218 return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1219}
1220EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1221
1222int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1223{
1224 return security_ops->sk_alloc_security(sk, family, priority);
1225}
1226
1227void security_sk_free(struct sock *sk)
1228{
1229 security_ops->sk_free_security(sk);
1230}
1231
1232void security_sk_clone(const struct sock *sk, struct sock *newsk)
1233{
1234 security_ops->sk_clone_security(sk, newsk);
1235}
1236EXPORT_SYMBOL(security_sk_clone);
1237
1238void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1239{
1240 security_ops->sk_getsecid(sk, &fl->flowi_secid);
1241}
1242EXPORT_SYMBOL(security_sk_classify_flow);
1243
1244void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1245{
1246 security_ops->req_classify_flow(req, fl);
1247}
1248EXPORT_SYMBOL(security_req_classify_flow);
1249
1250void security_sock_graft(struct sock *sk, struct socket *parent)
1251{
1252 security_ops->sock_graft(sk, parent);
1253}
1254EXPORT_SYMBOL(security_sock_graft);
1255
1256int security_inet_conn_request(struct sock *sk,
1257 struct sk_buff *skb, struct request_sock *req)
1258{
1259 return security_ops->inet_conn_request(sk, skb, req);
1260}
1261EXPORT_SYMBOL(security_inet_conn_request);
1262
1263void security_inet_csk_clone(struct sock *newsk,
1264 const struct request_sock *req)
1265{
1266 security_ops->inet_csk_clone(newsk, req);
1267}
1268
1269void security_inet_conn_established(struct sock *sk,
1270 struct sk_buff *skb)
1271{
1272 security_ops->inet_conn_established(sk, skb);
1273}
1274
1275int security_secmark_relabel_packet(u32 secid)
1276{
1277 return security_ops->secmark_relabel_packet(secid);
1278}
1279EXPORT_SYMBOL(security_secmark_relabel_packet);
1280
1281void security_secmark_refcount_inc(void)
1282{
1283 security_ops->secmark_refcount_inc();
1284}
1285EXPORT_SYMBOL(security_secmark_refcount_inc);
1286
1287void security_secmark_refcount_dec(void)
1288{
1289 security_ops->secmark_refcount_dec();
1290}
1291EXPORT_SYMBOL(security_secmark_refcount_dec);
1292
1293int security_tun_dev_alloc_security(void **security)
1294{
1295 return security_ops->tun_dev_alloc_security(security);
1296}
1297EXPORT_SYMBOL(security_tun_dev_alloc_security);
1298
1299void security_tun_dev_free_security(void *security)
1300{
1301 security_ops->tun_dev_free_security(security);
1302}
1303EXPORT_SYMBOL(security_tun_dev_free_security);
1304
1305int security_tun_dev_create(void)
1306{
1307 return security_ops->tun_dev_create();
1308}
1309EXPORT_SYMBOL(security_tun_dev_create);
1310
1311int security_tun_dev_attach_queue(void *security)
1312{
1313 return security_ops->tun_dev_attach_queue(security);
1314}
1315EXPORT_SYMBOL(security_tun_dev_attach_queue);
1316
1317int security_tun_dev_attach(struct sock *sk, void *security)
1318{
1319 return security_ops->tun_dev_attach(sk, security);
1320}
1321EXPORT_SYMBOL(security_tun_dev_attach);
1322
1323int security_tun_dev_open(void *security)
1324{
1325 return security_ops->tun_dev_open(security);
1326}
1327EXPORT_SYMBOL(security_tun_dev_open);
1328
1329void security_skb_owned_by(struct sk_buff *skb, struct sock *sk)
1330{
1331 security_ops->skb_owned_by(skb, sk);
1332}
1333
1334#endif /* CONFIG_SECURITY_NETWORK */
1335
1336#ifdef CONFIG_SECURITY_NETWORK_XFRM
1337
1338int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1339 struct xfrm_user_sec_ctx *sec_ctx,
1340 gfp_t gfp)
1341{
1342 return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx, gfp);
1343}
1344EXPORT_SYMBOL(security_xfrm_policy_alloc);
1345
1346int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1347 struct xfrm_sec_ctx **new_ctxp)
1348{
1349 return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1350}
1351
1352void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1353{
1354 security_ops->xfrm_policy_free_security(ctx);
1355}
1356EXPORT_SYMBOL(security_xfrm_policy_free);
1357
1358int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1359{
1360 return security_ops->xfrm_policy_delete_security(ctx);
1361}
1362
1363int security_xfrm_state_alloc(struct xfrm_state *x,
1364 struct xfrm_user_sec_ctx *sec_ctx)
1365{
1366 return security_ops->xfrm_state_alloc(x, sec_ctx);
1367}
1368EXPORT_SYMBOL(security_xfrm_state_alloc);
1369
1370int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1371 struct xfrm_sec_ctx *polsec, u32 secid)
1372{
1373 return security_ops->xfrm_state_alloc_acquire(x, polsec, secid);
1374}
1375
1376int security_xfrm_state_delete(struct xfrm_state *x)
1377{
1378 return security_ops->xfrm_state_delete_security(x);
1379}
1380EXPORT_SYMBOL(security_xfrm_state_delete);
1381
1382void security_xfrm_state_free(struct xfrm_state *x)
1383{
1384 security_ops->xfrm_state_free_security(x);
1385}
1386
1387int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1388{
1389 return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1390}
1391
1392int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1393 struct xfrm_policy *xp,
1394 const struct flowi *fl)
1395{
1396 return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1397}
1398
1399int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1400{
1401 return security_ops->xfrm_decode_session(skb, secid, 1);
1402}
1403
1404void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1405{
1406 int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1407
1408 BUG_ON(rc);
1409}
1410EXPORT_SYMBOL(security_skb_classify_flow);
1411
1412#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1413
1414#ifdef CONFIG_KEYS
1415
1416int security_key_alloc(struct key *key, const struct cred *cred,
1417 unsigned long flags)
1418{
1419 return security_ops->key_alloc(key, cred, flags);
1420}
1421
1422void security_key_free(struct key *key)
1423{
1424 security_ops->key_free(key);
1425}
1426
1427int security_key_permission(key_ref_t key_ref,
1428 const struct cred *cred, key_perm_t perm)
1429{
1430 return security_ops->key_permission(key_ref, cred, perm);
1431}
1432
1433int security_key_getsecurity(struct key *key, char **_buffer)
1434{
1435 return security_ops->key_getsecurity(key, _buffer);
1436}
1437
1438#endif /* CONFIG_KEYS */
1439
1440#ifdef CONFIG_AUDIT
1441
1442int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1443{
1444 return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1445}
1446
1447int security_audit_rule_known(struct audit_krule *krule)
1448{
1449 return security_ops->audit_rule_known(krule);
1450}
1451
1452void security_audit_rule_free(void *lsmrule)
1453{
1454 security_ops->audit_rule_free(lsmrule);
1455}
1456
1457int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1458 struct audit_context *actx)
1459{
1460 return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1461}
1462
1463#endif /* CONFIG_AUDIT */
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 loadpin_add_hooks();
64
65 /*
66 * Load all the remaining security modules.
67 */
68 do_security_initcalls();
69
70 return 0;
71}
72
73/* Save user chosen LSM */
74static int __init choose_lsm(char *str)
75{
76 strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
77 return 1;
78}
79__setup("security=", choose_lsm);
80
81/**
82 * security_module_enable - Load given security module on boot ?
83 * @module: the name of the module
84 *
85 * Each LSM must pass this method before registering its own operations
86 * to avoid security registration races. This method may also be used
87 * to check if your LSM is currently loaded during kernel initialization.
88 *
89 * Return true if:
90 * -The passed LSM is the one chosen by user at boot time,
91 * -or the passed LSM is configured as the default and the user did not
92 * choose an alternate LSM at boot time.
93 * Otherwise, return false.
94 */
95int __init security_module_enable(const char *module)
96{
97 return !strcmp(module, chosen_lsm);
98}
99
100/*
101 * Hook list operation macros.
102 *
103 * call_void_hook:
104 * This is a hook that does not return a value.
105 *
106 * call_int_hook:
107 * This is a hook that returns a value.
108 */
109
110#define call_void_hook(FUNC, ...) \
111 do { \
112 struct security_hook_list *P; \
113 \
114 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
115 P->hook.FUNC(__VA_ARGS__); \
116 } while (0)
117
118#define call_int_hook(FUNC, IRC, ...) ({ \
119 int RC = IRC; \
120 do { \
121 struct security_hook_list *P; \
122 \
123 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
124 RC = P->hook.FUNC(__VA_ARGS__); \
125 if (RC != 0) \
126 break; \
127 } \
128 } while (0); \
129 RC; \
130})
131
132/* Security operations */
133
134int security_binder_set_context_mgr(struct task_struct *mgr)
135{
136 return call_int_hook(binder_set_context_mgr, 0, mgr);
137}
138
139int security_binder_transaction(struct task_struct *from,
140 struct task_struct *to)
141{
142 return call_int_hook(binder_transaction, 0, from, to);
143}
144
145int security_binder_transfer_binder(struct task_struct *from,
146 struct task_struct *to)
147{
148 return call_int_hook(binder_transfer_binder, 0, from, to);
149}
150
151int security_binder_transfer_file(struct task_struct *from,
152 struct task_struct *to, struct file *file)
153{
154 return call_int_hook(binder_transfer_file, 0, from, to, file);
155}
156
157int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
158{
159 return call_int_hook(ptrace_access_check, 0, child, mode);
160}
161
162int security_ptrace_traceme(struct task_struct *parent)
163{
164 return call_int_hook(ptrace_traceme, 0, parent);
165}
166
167int security_capget(struct task_struct *target,
168 kernel_cap_t *effective,
169 kernel_cap_t *inheritable,
170 kernel_cap_t *permitted)
171{
172 return call_int_hook(capget, 0, target,
173 effective, inheritable, permitted);
174}
175
176int security_capset(struct cred *new, const struct cred *old,
177 const kernel_cap_t *effective,
178 const kernel_cap_t *inheritable,
179 const kernel_cap_t *permitted)
180{
181 return call_int_hook(capset, 0, new, old,
182 effective, inheritable, permitted);
183}
184
185int security_capable(const struct cred *cred, struct user_namespace *ns,
186 int cap)
187{
188 return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
189}
190
191int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
192 int cap)
193{
194 return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
195}
196
197int security_quotactl(int cmds, int type, int id, struct super_block *sb)
198{
199 return call_int_hook(quotactl, 0, cmds, type, id, sb);
200}
201
202int security_quota_on(struct dentry *dentry)
203{
204 return call_int_hook(quota_on, 0, dentry);
205}
206
207int security_syslog(int type)
208{
209 return call_int_hook(syslog, 0, type);
210}
211
212int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
213{
214 return call_int_hook(settime, 0, ts, tz);
215}
216
217int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
218{
219 struct security_hook_list *hp;
220 int cap_sys_admin = 1;
221 int rc;
222
223 /*
224 * The module will respond with a positive value if
225 * it thinks the __vm_enough_memory() call should be
226 * made with the cap_sys_admin set. If all of the modules
227 * agree that it should be set it will. If any module
228 * thinks it should not be set it won't.
229 */
230 list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
231 rc = hp->hook.vm_enough_memory(mm, pages);
232 if (rc <= 0) {
233 cap_sys_admin = 0;
234 break;
235 }
236 }
237 return __vm_enough_memory(mm, pages, cap_sys_admin);
238}
239
240int security_bprm_set_creds(struct linux_binprm *bprm)
241{
242 return call_int_hook(bprm_set_creds, 0, bprm);
243}
244
245int security_bprm_check(struct linux_binprm *bprm)
246{
247 int ret;
248
249 ret = call_int_hook(bprm_check_security, 0, bprm);
250 if (ret)
251 return ret;
252 return ima_bprm_check(bprm);
253}
254
255void security_bprm_committing_creds(struct linux_binprm *bprm)
256{
257 call_void_hook(bprm_committing_creds, bprm);
258}
259
260void security_bprm_committed_creds(struct linux_binprm *bprm)
261{
262 call_void_hook(bprm_committed_creds, bprm);
263}
264
265int security_bprm_secureexec(struct linux_binprm *bprm)
266{
267 return call_int_hook(bprm_secureexec, 0, bprm);
268}
269
270int security_sb_alloc(struct super_block *sb)
271{
272 return call_int_hook(sb_alloc_security, 0, sb);
273}
274
275void security_sb_free(struct super_block *sb)
276{
277 call_void_hook(sb_free_security, sb);
278}
279
280int security_sb_copy_data(char *orig, char *copy)
281{
282 return call_int_hook(sb_copy_data, 0, orig, copy);
283}
284EXPORT_SYMBOL(security_sb_copy_data);
285
286int security_sb_remount(struct super_block *sb, void *data)
287{
288 return call_int_hook(sb_remount, 0, sb, data);
289}
290
291int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
292{
293 return call_int_hook(sb_kern_mount, 0, sb, flags, data);
294}
295
296int security_sb_show_options(struct seq_file *m, struct super_block *sb)
297{
298 return call_int_hook(sb_show_options, 0, m, sb);
299}
300
301int security_sb_statfs(struct dentry *dentry)
302{
303 return call_int_hook(sb_statfs, 0, dentry);
304}
305
306int security_sb_mount(const char *dev_name, const struct path *path,
307 const char *type, unsigned long flags, void *data)
308{
309 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
310}
311
312int security_sb_umount(struct vfsmount *mnt, int flags)
313{
314 return call_int_hook(sb_umount, 0, mnt, flags);
315}
316
317int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
318{
319 return call_int_hook(sb_pivotroot, 0, old_path, new_path);
320}
321
322int security_sb_set_mnt_opts(struct super_block *sb,
323 struct security_mnt_opts *opts,
324 unsigned long kern_flags,
325 unsigned long *set_kern_flags)
326{
327 return call_int_hook(sb_set_mnt_opts,
328 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
329 opts, kern_flags, set_kern_flags);
330}
331EXPORT_SYMBOL(security_sb_set_mnt_opts);
332
333int security_sb_clone_mnt_opts(const struct super_block *oldsb,
334 struct super_block *newsb)
335{
336 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb);
337}
338EXPORT_SYMBOL(security_sb_clone_mnt_opts);
339
340int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
341{
342 return call_int_hook(sb_parse_opts_str, 0, options, opts);
343}
344EXPORT_SYMBOL(security_sb_parse_opts_str);
345
346int security_inode_alloc(struct inode *inode)
347{
348 inode->i_security = NULL;
349 return call_int_hook(inode_alloc_security, 0, inode);
350}
351
352void security_inode_free(struct inode *inode)
353{
354 integrity_inode_free(inode);
355 call_void_hook(inode_free_security, inode);
356}
357
358int security_dentry_init_security(struct dentry *dentry, int mode,
359 const struct qstr *name, void **ctx,
360 u32 *ctxlen)
361{
362 return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
363 name, ctx, ctxlen);
364}
365EXPORT_SYMBOL(security_dentry_init_security);
366
367int security_dentry_create_files_as(struct dentry *dentry, int mode,
368 struct qstr *name,
369 const struct cred *old, struct cred *new)
370{
371 return call_int_hook(dentry_create_files_as, 0, dentry, mode,
372 name, old, new);
373}
374EXPORT_SYMBOL(security_dentry_create_files_as);
375
376int security_inode_init_security(struct inode *inode, struct inode *dir,
377 const struct qstr *qstr,
378 const initxattrs initxattrs, void *fs_data)
379{
380 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
381 struct xattr *lsm_xattr, *evm_xattr, *xattr;
382 int ret;
383
384 if (unlikely(IS_PRIVATE(inode)))
385 return 0;
386
387 if (!initxattrs)
388 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
389 dir, qstr, NULL, NULL, NULL);
390 memset(new_xattrs, 0, sizeof(new_xattrs));
391 lsm_xattr = new_xattrs;
392 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
393 &lsm_xattr->name,
394 &lsm_xattr->value,
395 &lsm_xattr->value_len);
396 if (ret)
397 goto out;
398
399 evm_xattr = lsm_xattr + 1;
400 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
401 if (ret)
402 goto out;
403 ret = initxattrs(inode, new_xattrs, fs_data);
404out:
405 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
406 kfree(xattr->value);
407 return (ret == -EOPNOTSUPP) ? 0 : ret;
408}
409EXPORT_SYMBOL(security_inode_init_security);
410
411int security_old_inode_init_security(struct inode *inode, struct inode *dir,
412 const struct qstr *qstr, const char **name,
413 void **value, size_t *len)
414{
415 if (unlikely(IS_PRIVATE(inode)))
416 return -EOPNOTSUPP;
417 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
418 qstr, name, value, len);
419}
420EXPORT_SYMBOL(security_old_inode_init_security);
421
422#ifdef CONFIG_SECURITY_PATH
423int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
424 unsigned int dev)
425{
426 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
427 return 0;
428 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
429}
430EXPORT_SYMBOL(security_path_mknod);
431
432int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
433{
434 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
435 return 0;
436 return call_int_hook(path_mkdir, 0, dir, dentry, mode);
437}
438EXPORT_SYMBOL(security_path_mkdir);
439
440int security_path_rmdir(const struct path *dir, struct dentry *dentry)
441{
442 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
443 return 0;
444 return call_int_hook(path_rmdir, 0, dir, dentry);
445}
446
447int security_path_unlink(const struct path *dir, struct dentry *dentry)
448{
449 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
450 return 0;
451 return call_int_hook(path_unlink, 0, dir, dentry);
452}
453EXPORT_SYMBOL(security_path_unlink);
454
455int security_path_symlink(const struct path *dir, struct dentry *dentry,
456 const char *old_name)
457{
458 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
459 return 0;
460 return call_int_hook(path_symlink, 0, dir, dentry, old_name);
461}
462
463int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
464 struct dentry *new_dentry)
465{
466 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
467 return 0;
468 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
469}
470
471int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
472 const struct path *new_dir, struct dentry *new_dentry,
473 unsigned int flags)
474{
475 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
476 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
477 return 0;
478
479 if (flags & RENAME_EXCHANGE) {
480 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
481 old_dir, old_dentry);
482 if (err)
483 return err;
484 }
485
486 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
487 new_dentry);
488}
489EXPORT_SYMBOL(security_path_rename);
490
491int security_path_truncate(const struct path *path)
492{
493 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
494 return 0;
495 return call_int_hook(path_truncate, 0, path);
496}
497
498int security_path_chmod(const struct path *path, umode_t mode)
499{
500 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
501 return 0;
502 return call_int_hook(path_chmod, 0, path, mode);
503}
504
505int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
506{
507 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
508 return 0;
509 return call_int_hook(path_chown, 0, path, uid, gid);
510}
511
512int security_path_chroot(const struct path *path)
513{
514 return call_int_hook(path_chroot, 0, path);
515}
516#endif
517
518int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
519{
520 if (unlikely(IS_PRIVATE(dir)))
521 return 0;
522 return call_int_hook(inode_create, 0, dir, dentry, mode);
523}
524EXPORT_SYMBOL_GPL(security_inode_create);
525
526int security_inode_link(struct dentry *old_dentry, struct inode *dir,
527 struct dentry *new_dentry)
528{
529 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
530 return 0;
531 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
532}
533
534int security_inode_unlink(struct inode *dir, struct dentry *dentry)
535{
536 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
537 return 0;
538 return call_int_hook(inode_unlink, 0, dir, dentry);
539}
540
541int security_inode_symlink(struct inode *dir, struct dentry *dentry,
542 const char *old_name)
543{
544 if (unlikely(IS_PRIVATE(dir)))
545 return 0;
546 return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
547}
548
549int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
550{
551 if (unlikely(IS_PRIVATE(dir)))
552 return 0;
553 return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
554}
555EXPORT_SYMBOL_GPL(security_inode_mkdir);
556
557int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
558{
559 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
560 return 0;
561 return call_int_hook(inode_rmdir, 0, dir, dentry);
562}
563
564int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
565{
566 if (unlikely(IS_PRIVATE(dir)))
567 return 0;
568 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
569}
570
571int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
572 struct inode *new_dir, struct dentry *new_dentry,
573 unsigned int flags)
574{
575 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
576 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
577 return 0;
578
579 if (flags & RENAME_EXCHANGE) {
580 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
581 old_dir, old_dentry);
582 if (err)
583 return err;
584 }
585
586 return call_int_hook(inode_rename, 0, old_dir, old_dentry,
587 new_dir, new_dentry);
588}
589
590int security_inode_readlink(struct dentry *dentry)
591{
592 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
593 return 0;
594 return call_int_hook(inode_readlink, 0, dentry);
595}
596
597int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
598 bool rcu)
599{
600 if (unlikely(IS_PRIVATE(inode)))
601 return 0;
602 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
603}
604
605int security_inode_permission(struct inode *inode, int mask)
606{
607 if (unlikely(IS_PRIVATE(inode)))
608 return 0;
609 return call_int_hook(inode_permission, 0, inode, mask);
610}
611
612int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
613{
614 int ret;
615
616 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
617 return 0;
618 ret = call_int_hook(inode_setattr, 0, dentry, attr);
619 if (ret)
620 return ret;
621 return evm_inode_setattr(dentry, attr);
622}
623EXPORT_SYMBOL_GPL(security_inode_setattr);
624
625int security_inode_getattr(const struct path *path)
626{
627 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
628 return 0;
629 return call_int_hook(inode_getattr, 0, path);
630}
631
632int security_inode_setxattr(struct dentry *dentry, const char *name,
633 const void *value, size_t size, int flags)
634{
635 int ret;
636
637 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
638 return 0;
639 /*
640 * SELinux and Smack integrate the cap call,
641 * so assume that all LSMs supplying this call do so.
642 */
643 ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
644 flags);
645
646 if (ret == 1)
647 ret = cap_inode_setxattr(dentry, name, value, size, flags);
648 if (ret)
649 return ret;
650 ret = ima_inode_setxattr(dentry, name, value, size);
651 if (ret)
652 return ret;
653 return evm_inode_setxattr(dentry, name, value, size);
654}
655
656void security_inode_post_setxattr(struct dentry *dentry, const char *name,
657 const void *value, size_t size, int flags)
658{
659 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
660 return;
661 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
662 evm_inode_post_setxattr(dentry, name, value, size);
663}
664
665int security_inode_getxattr(struct dentry *dentry, const char *name)
666{
667 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
668 return 0;
669 return call_int_hook(inode_getxattr, 0, dentry, name);
670}
671
672int security_inode_listxattr(struct dentry *dentry)
673{
674 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
675 return 0;
676 return call_int_hook(inode_listxattr, 0, dentry);
677}
678
679int security_inode_removexattr(struct dentry *dentry, const char *name)
680{
681 int ret;
682
683 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
684 return 0;
685 /*
686 * SELinux and Smack integrate the cap call,
687 * so assume that all LSMs supplying this call do so.
688 */
689 ret = call_int_hook(inode_removexattr, 1, dentry, name);
690 if (ret == 1)
691 ret = cap_inode_removexattr(dentry, name);
692 if (ret)
693 return ret;
694 ret = ima_inode_removexattr(dentry, name);
695 if (ret)
696 return ret;
697 return evm_inode_removexattr(dentry, name);
698}
699
700int security_inode_need_killpriv(struct dentry *dentry)
701{
702 return call_int_hook(inode_need_killpriv, 0, dentry);
703}
704
705int security_inode_killpriv(struct dentry *dentry)
706{
707 return call_int_hook(inode_killpriv, 0, dentry);
708}
709
710int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
711{
712 struct security_hook_list *hp;
713 int rc;
714
715 if (unlikely(IS_PRIVATE(inode)))
716 return -EOPNOTSUPP;
717 /*
718 * Only one module will provide an attribute with a given name.
719 */
720 list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
721 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
722 if (rc != -EOPNOTSUPP)
723 return rc;
724 }
725 return -EOPNOTSUPP;
726}
727
728int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
729{
730 struct security_hook_list *hp;
731 int rc;
732
733 if (unlikely(IS_PRIVATE(inode)))
734 return -EOPNOTSUPP;
735 /*
736 * Only one module will provide an attribute with a given name.
737 */
738 list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
739 rc = hp->hook.inode_setsecurity(inode, name, value, size,
740 flags);
741 if (rc != -EOPNOTSUPP)
742 return rc;
743 }
744 return -EOPNOTSUPP;
745}
746
747int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
748{
749 if (unlikely(IS_PRIVATE(inode)))
750 return 0;
751 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
752}
753EXPORT_SYMBOL(security_inode_listsecurity);
754
755void security_inode_getsecid(struct inode *inode, u32 *secid)
756{
757 call_void_hook(inode_getsecid, inode, secid);
758}
759
760int security_inode_copy_up(struct dentry *src, struct cred **new)
761{
762 return call_int_hook(inode_copy_up, 0, src, new);
763}
764EXPORT_SYMBOL(security_inode_copy_up);
765
766int security_inode_copy_up_xattr(const char *name)
767{
768 return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
769}
770EXPORT_SYMBOL(security_inode_copy_up_xattr);
771
772int security_file_permission(struct file *file, int mask)
773{
774 int ret;
775
776 ret = call_int_hook(file_permission, 0, file, mask);
777 if (ret)
778 return ret;
779
780 return fsnotify_perm(file, mask);
781}
782
783int security_file_alloc(struct file *file)
784{
785 return call_int_hook(file_alloc_security, 0, file);
786}
787
788void security_file_free(struct file *file)
789{
790 call_void_hook(file_free_security, file);
791}
792
793int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
794{
795 return call_int_hook(file_ioctl, 0, file, cmd, arg);
796}
797
798static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
799{
800 /*
801 * Does we have PROT_READ and does the application expect
802 * it to imply PROT_EXEC? If not, nothing to talk about...
803 */
804 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
805 return prot;
806 if (!(current->personality & READ_IMPLIES_EXEC))
807 return prot;
808 /*
809 * if that's an anonymous mapping, let it.
810 */
811 if (!file)
812 return prot | PROT_EXEC;
813 /*
814 * ditto if it's not on noexec mount, except that on !MMU we need
815 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
816 */
817 if (!path_noexec(&file->f_path)) {
818#ifndef CONFIG_MMU
819 if (file->f_op->mmap_capabilities) {
820 unsigned caps = file->f_op->mmap_capabilities(file);
821 if (!(caps & NOMMU_MAP_EXEC))
822 return prot;
823 }
824#endif
825 return prot | PROT_EXEC;
826 }
827 /* anything on noexec mount won't get PROT_EXEC */
828 return prot;
829}
830
831int security_mmap_file(struct file *file, unsigned long prot,
832 unsigned long flags)
833{
834 int ret;
835 ret = call_int_hook(mmap_file, 0, file, prot,
836 mmap_prot(file, prot), flags);
837 if (ret)
838 return ret;
839 return ima_file_mmap(file, prot);
840}
841
842int security_mmap_addr(unsigned long addr)
843{
844 return call_int_hook(mmap_addr, 0, addr);
845}
846
847int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
848 unsigned long prot)
849{
850 return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
851}
852
853int security_file_lock(struct file *file, unsigned int cmd)
854{
855 return call_int_hook(file_lock, 0, file, cmd);
856}
857
858int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
859{
860 return call_int_hook(file_fcntl, 0, file, cmd, arg);
861}
862
863void security_file_set_fowner(struct file *file)
864{
865 call_void_hook(file_set_fowner, file);
866}
867
868int security_file_send_sigiotask(struct task_struct *tsk,
869 struct fown_struct *fown, int sig)
870{
871 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
872}
873
874int security_file_receive(struct file *file)
875{
876 return call_int_hook(file_receive, 0, file);
877}
878
879int security_file_open(struct file *file, const struct cred *cred)
880{
881 int ret;
882
883 ret = call_int_hook(file_open, 0, file, cred);
884 if (ret)
885 return ret;
886
887 return fsnotify_perm(file, MAY_OPEN);
888}
889
890int security_task_create(unsigned long clone_flags)
891{
892 return call_int_hook(task_create, 0, clone_flags);
893}
894
895void security_task_free(struct task_struct *task)
896{
897 call_void_hook(task_free, task);
898}
899
900int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
901{
902 return call_int_hook(cred_alloc_blank, 0, cred, gfp);
903}
904
905void security_cred_free(struct cred *cred)
906{
907 call_void_hook(cred_free, cred);
908}
909
910int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
911{
912 return call_int_hook(cred_prepare, 0, new, old, gfp);
913}
914
915void security_transfer_creds(struct cred *new, const struct cred *old)
916{
917 call_void_hook(cred_transfer, new, old);
918}
919
920int security_kernel_act_as(struct cred *new, u32 secid)
921{
922 return call_int_hook(kernel_act_as, 0, new, secid);
923}
924
925int security_kernel_create_files_as(struct cred *new, struct inode *inode)
926{
927 return call_int_hook(kernel_create_files_as, 0, new, inode);
928}
929
930int security_kernel_module_request(char *kmod_name)
931{
932 return call_int_hook(kernel_module_request, 0, kmod_name);
933}
934
935int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
936{
937 int ret;
938
939 ret = call_int_hook(kernel_read_file, 0, file, id);
940 if (ret)
941 return ret;
942 return ima_read_file(file, id);
943}
944EXPORT_SYMBOL_GPL(security_kernel_read_file);
945
946int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
947 enum kernel_read_file_id id)
948{
949 int ret;
950
951 ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
952 if (ret)
953 return ret;
954 return ima_post_read_file(file, buf, size, id);
955}
956EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
957
958int security_task_fix_setuid(struct cred *new, const struct cred *old,
959 int flags)
960{
961 return call_int_hook(task_fix_setuid, 0, new, old, flags);
962}
963
964int security_task_setpgid(struct task_struct *p, pid_t pgid)
965{
966 return call_int_hook(task_setpgid, 0, p, pgid);
967}
968
969int security_task_getpgid(struct task_struct *p)
970{
971 return call_int_hook(task_getpgid, 0, p);
972}
973
974int security_task_getsid(struct task_struct *p)
975{
976 return call_int_hook(task_getsid, 0, p);
977}
978
979void security_task_getsecid(struct task_struct *p, u32 *secid)
980{
981 *secid = 0;
982 call_void_hook(task_getsecid, p, secid);
983}
984EXPORT_SYMBOL(security_task_getsecid);
985
986int security_task_setnice(struct task_struct *p, int nice)
987{
988 return call_int_hook(task_setnice, 0, p, nice);
989}
990
991int security_task_setioprio(struct task_struct *p, int ioprio)
992{
993 return call_int_hook(task_setioprio, 0, p, ioprio);
994}
995
996int security_task_getioprio(struct task_struct *p)
997{
998 return call_int_hook(task_getioprio, 0, p);
999}
1000
1001int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1002 struct rlimit *new_rlim)
1003{
1004 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1005}
1006
1007int security_task_setscheduler(struct task_struct *p)
1008{
1009 return call_int_hook(task_setscheduler, 0, p);
1010}
1011
1012int security_task_getscheduler(struct task_struct *p)
1013{
1014 return call_int_hook(task_getscheduler, 0, p);
1015}
1016
1017int security_task_movememory(struct task_struct *p)
1018{
1019 return call_int_hook(task_movememory, 0, p);
1020}
1021
1022int security_task_kill(struct task_struct *p, struct siginfo *info,
1023 int sig, u32 secid)
1024{
1025 return call_int_hook(task_kill, 0, p, info, sig, secid);
1026}
1027
1028int security_task_wait(struct task_struct *p)
1029{
1030 return call_int_hook(task_wait, 0, p);
1031}
1032
1033int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1034 unsigned long arg4, unsigned long arg5)
1035{
1036 int thisrc;
1037 int rc = -ENOSYS;
1038 struct security_hook_list *hp;
1039
1040 list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1041 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1042 if (thisrc != -ENOSYS) {
1043 rc = thisrc;
1044 if (thisrc != 0)
1045 break;
1046 }
1047 }
1048 return rc;
1049}
1050
1051void security_task_to_inode(struct task_struct *p, struct inode *inode)
1052{
1053 call_void_hook(task_to_inode, p, inode);
1054}
1055
1056int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1057{
1058 return call_int_hook(ipc_permission, 0, ipcp, flag);
1059}
1060
1061void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1062{
1063 *secid = 0;
1064 call_void_hook(ipc_getsecid, ipcp, secid);
1065}
1066
1067int security_msg_msg_alloc(struct msg_msg *msg)
1068{
1069 return call_int_hook(msg_msg_alloc_security, 0, msg);
1070}
1071
1072void security_msg_msg_free(struct msg_msg *msg)
1073{
1074 call_void_hook(msg_msg_free_security, msg);
1075}
1076
1077int security_msg_queue_alloc(struct msg_queue *msq)
1078{
1079 return call_int_hook(msg_queue_alloc_security, 0, msq);
1080}
1081
1082void security_msg_queue_free(struct msg_queue *msq)
1083{
1084 call_void_hook(msg_queue_free_security, msq);
1085}
1086
1087int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
1088{
1089 return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1090}
1091
1092int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1093{
1094 return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1095}
1096
1097int security_msg_queue_msgsnd(struct msg_queue *msq,
1098 struct msg_msg *msg, int msqflg)
1099{
1100 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1101}
1102
1103int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1104 struct task_struct *target, long type, int mode)
1105{
1106 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1107}
1108
1109int security_shm_alloc(struct shmid_kernel *shp)
1110{
1111 return call_int_hook(shm_alloc_security, 0, shp);
1112}
1113
1114void security_shm_free(struct shmid_kernel *shp)
1115{
1116 call_void_hook(shm_free_security, shp);
1117}
1118
1119int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1120{
1121 return call_int_hook(shm_associate, 0, shp, shmflg);
1122}
1123
1124int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1125{
1126 return call_int_hook(shm_shmctl, 0, shp, cmd);
1127}
1128
1129int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1130{
1131 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1132}
1133
1134int security_sem_alloc(struct sem_array *sma)
1135{
1136 return call_int_hook(sem_alloc_security, 0, sma);
1137}
1138
1139void security_sem_free(struct sem_array *sma)
1140{
1141 call_void_hook(sem_free_security, sma);
1142}
1143
1144int security_sem_associate(struct sem_array *sma, int semflg)
1145{
1146 return call_int_hook(sem_associate, 0, sma, semflg);
1147}
1148
1149int security_sem_semctl(struct sem_array *sma, int cmd)
1150{
1151 return call_int_hook(sem_semctl, 0, sma, cmd);
1152}
1153
1154int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1155 unsigned nsops, int alter)
1156{
1157 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1158}
1159
1160void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1161{
1162 if (unlikely(inode && IS_PRIVATE(inode)))
1163 return;
1164 call_void_hook(d_instantiate, dentry, inode);
1165}
1166EXPORT_SYMBOL(security_d_instantiate);
1167
1168int security_getprocattr(struct task_struct *p, char *name, char **value)
1169{
1170 return call_int_hook(getprocattr, -EINVAL, p, name, value);
1171}
1172
1173int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1174{
1175 return call_int_hook(setprocattr, -EINVAL, p, name, value, size);
1176}
1177
1178int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1179{
1180 return call_int_hook(netlink_send, 0, sk, skb);
1181}
1182
1183int security_ismaclabel(const char *name)
1184{
1185 return call_int_hook(ismaclabel, 0, name);
1186}
1187EXPORT_SYMBOL(security_ismaclabel);
1188
1189int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1190{
1191 return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1192 seclen);
1193}
1194EXPORT_SYMBOL(security_secid_to_secctx);
1195
1196int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1197{
1198 *secid = 0;
1199 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1200}
1201EXPORT_SYMBOL(security_secctx_to_secid);
1202
1203void security_release_secctx(char *secdata, u32 seclen)
1204{
1205 call_void_hook(release_secctx, secdata, seclen);
1206}
1207EXPORT_SYMBOL(security_release_secctx);
1208
1209void security_inode_invalidate_secctx(struct inode *inode)
1210{
1211 call_void_hook(inode_invalidate_secctx, inode);
1212}
1213EXPORT_SYMBOL(security_inode_invalidate_secctx);
1214
1215int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1216{
1217 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1218}
1219EXPORT_SYMBOL(security_inode_notifysecctx);
1220
1221int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1222{
1223 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1224}
1225EXPORT_SYMBOL(security_inode_setsecctx);
1226
1227int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1228{
1229 return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1230}
1231EXPORT_SYMBOL(security_inode_getsecctx);
1232
1233#ifdef CONFIG_SECURITY_NETWORK
1234
1235int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1236{
1237 return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1238}
1239EXPORT_SYMBOL(security_unix_stream_connect);
1240
1241int security_unix_may_send(struct socket *sock, struct socket *other)
1242{
1243 return call_int_hook(unix_may_send, 0, sock, other);
1244}
1245EXPORT_SYMBOL(security_unix_may_send);
1246
1247int security_socket_create(int family, int type, int protocol, int kern)
1248{
1249 return call_int_hook(socket_create, 0, family, type, protocol, kern);
1250}
1251
1252int security_socket_post_create(struct socket *sock, int family,
1253 int type, int protocol, int kern)
1254{
1255 return call_int_hook(socket_post_create, 0, sock, family, type,
1256 protocol, kern);
1257}
1258
1259int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1260{
1261 return call_int_hook(socket_bind, 0, sock, address, addrlen);
1262}
1263
1264int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1265{
1266 return call_int_hook(socket_connect, 0, sock, address, addrlen);
1267}
1268
1269int security_socket_listen(struct socket *sock, int backlog)
1270{
1271 return call_int_hook(socket_listen, 0, sock, backlog);
1272}
1273
1274int security_socket_accept(struct socket *sock, struct socket *newsock)
1275{
1276 return call_int_hook(socket_accept, 0, sock, newsock);
1277}
1278
1279int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1280{
1281 return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1282}
1283
1284int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1285 int size, int flags)
1286{
1287 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1288}
1289
1290int security_socket_getsockname(struct socket *sock)
1291{
1292 return call_int_hook(socket_getsockname, 0, sock);
1293}
1294
1295int security_socket_getpeername(struct socket *sock)
1296{
1297 return call_int_hook(socket_getpeername, 0, sock);
1298}
1299
1300int security_socket_getsockopt(struct socket *sock, int level, int optname)
1301{
1302 return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1303}
1304
1305int security_socket_setsockopt(struct socket *sock, int level, int optname)
1306{
1307 return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1308}
1309
1310int security_socket_shutdown(struct socket *sock, int how)
1311{
1312 return call_int_hook(socket_shutdown, 0, sock, how);
1313}
1314
1315int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1316{
1317 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1318}
1319EXPORT_SYMBOL(security_sock_rcv_skb);
1320
1321int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1322 int __user *optlen, unsigned len)
1323{
1324 return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1325 optval, optlen, len);
1326}
1327
1328int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1329{
1330 return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1331 skb, secid);
1332}
1333EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1334
1335int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1336{
1337 return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1338}
1339
1340void security_sk_free(struct sock *sk)
1341{
1342 call_void_hook(sk_free_security, sk);
1343}
1344
1345void security_sk_clone(const struct sock *sk, struct sock *newsk)
1346{
1347 call_void_hook(sk_clone_security, sk, newsk);
1348}
1349EXPORT_SYMBOL(security_sk_clone);
1350
1351void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1352{
1353 call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1354}
1355EXPORT_SYMBOL(security_sk_classify_flow);
1356
1357void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1358{
1359 call_void_hook(req_classify_flow, req, fl);
1360}
1361EXPORT_SYMBOL(security_req_classify_flow);
1362
1363void security_sock_graft(struct sock *sk, struct socket *parent)
1364{
1365 call_void_hook(sock_graft, sk, parent);
1366}
1367EXPORT_SYMBOL(security_sock_graft);
1368
1369int security_inet_conn_request(struct sock *sk,
1370 struct sk_buff *skb, struct request_sock *req)
1371{
1372 return call_int_hook(inet_conn_request, 0, sk, skb, req);
1373}
1374EXPORT_SYMBOL(security_inet_conn_request);
1375
1376void security_inet_csk_clone(struct sock *newsk,
1377 const struct request_sock *req)
1378{
1379 call_void_hook(inet_csk_clone, newsk, req);
1380}
1381
1382void security_inet_conn_established(struct sock *sk,
1383 struct sk_buff *skb)
1384{
1385 call_void_hook(inet_conn_established, sk, skb);
1386}
1387
1388int security_secmark_relabel_packet(u32 secid)
1389{
1390 return call_int_hook(secmark_relabel_packet, 0, secid);
1391}
1392EXPORT_SYMBOL(security_secmark_relabel_packet);
1393
1394void security_secmark_refcount_inc(void)
1395{
1396 call_void_hook(secmark_refcount_inc);
1397}
1398EXPORT_SYMBOL(security_secmark_refcount_inc);
1399
1400void security_secmark_refcount_dec(void)
1401{
1402 call_void_hook(secmark_refcount_dec);
1403}
1404EXPORT_SYMBOL(security_secmark_refcount_dec);
1405
1406int security_tun_dev_alloc_security(void **security)
1407{
1408 return call_int_hook(tun_dev_alloc_security, 0, security);
1409}
1410EXPORT_SYMBOL(security_tun_dev_alloc_security);
1411
1412void security_tun_dev_free_security(void *security)
1413{
1414 call_void_hook(tun_dev_free_security, security);
1415}
1416EXPORT_SYMBOL(security_tun_dev_free_security);
1417
1418int security_tun_dev_create(void)
1419{
1420 return call_int_hook(tun_dev_create, 0);
1421}
1422EXPORT_SYMBOL(security_tun_dev_create);
1423
1424int security_tun_dev_attach_queue(void *security)
1425{
1426 return call_int_hook(tun_dev_attach_queue, 0, security);
1427}
1428EXPORT_SYMBOL(security_tun_dev_attach_queue);
1429
1430int security_tun_dev_attach(struct sock *sk, void *security)
1431{
1432 return call_int_hook(tun_dev_attach, 0, sk, security);
1433}
1434EXPORT_SYMBOL(security_tun_dev_attach);
1435
1436int security_tun_dev_open(void *security)
1437{
1438 return call_int_hook(tun_dev_open, 0, security);
1439}
1440EXPORT_SYMBOL(security_tun_dev_open);
1441
1442#endif /* CONFIG_SECURITY_NETWORK */
1443
1444#ifdef CONFIG_SECURITY_NETWORK_XFRM
1445
1446int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1447 struct xfrm_user_sec_ctx *sec_ctx,
1448 gfp_t gfp)
1449{
1450 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1451}
1452EXPORT_SYMBOL(security_xfrm_policy_alloc);
1453
1454int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1455 struct xfrm_sec_ctx **new_ctxp)
1456{
1457 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1458}
1459
1460void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1461{
1462 call_void_hook(xfrm_policy_free_security, ctx);
1463}
1464EXPORT_SYMBOL(security_xfrm_policy_free);
1465
1466int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1467{
1468 return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1469}
1470
1471int security_xfrm_state_alloc(struct xfrm_state *x,
1472 struct xfrm_user_sec_ctx *sec_ctx)
1473{
1474 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1475}
1476EXPORT_SYMBOL(security_xfrm_state_alloc);
1477
1478int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1479 struct xfrm_sec_ctx *polsec, u32 secid)
1480{
1481 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1482}
1483
1484int security_xfrm_state_delete(struct xfrm_state *x)
1485{
1486 return call_int_hook(xfrm_state_delete_security, 0, x);
1487}
1488EXPORT_SYMBOL(security_xfrm_state_delete);
1489
1490void security_xfrm_state_free(struct xfrm_state *x)
1491{
1492 call_void_hook(xfrm_state_free_security, x);
1493}
1494
1495int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1496{
1497 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1498}
1499
1500int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1501 struct xfrm_policy *xp,
1502 const struct flowi *fl)
1503{
1504 struct security_hook_list *hp;
1505 int rc = 1;
1506
1507 /*
1508 * Since this function is expected to return 0 or 1, the judgment
1509 * becomes difficult if multiple LSMs supply this call. Fortunately,
1510 * we can use the first LSM's judgment because currently only SELinux
1511 * supplies this call.
1512 *
1513 * For speed optimization, we explicitly break the loop rather than
1514 * using the macro
1515 */
1516 list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1517 list) {
1518 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1519 break;
1520 }
1521 return rc;
1522}
1523
1524int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1525{
1526 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1527}
1528
1529void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1530{
1531 int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1532 0);
1533
1534 BUG_ON(rc);
1535}
1536EXPORT_SYMBOL(security_skb_classify_flow);
1537
1538#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1539
1540#ifdef CONFIG_KEYS
1541
1542int security_key_alloc(struct key *key, const struct cred *cred,
1543 unsigned long flags)
1544{
1545 return call_int_hook(key_alloc, 0, key, cred, flags);
1546}
1547
1548void security_key_free(struct key *key)
1549{
1550 call_void_hook(key_free, key);
1551}
1552
1553int security_key_permission(key_ref_t key_ref,
1554 const struct cred *cred, unsigned perm)
1555{
1556 return call_int_hook(key_permission, 0, key_ref, cred, perm);
1557}
1558
1559int security_key_getsecurity(struct key *key, char **_buffer)
1560{
1561 *_buffer = NULL;
1562 return call_int_hook(key_getsecurity, 0, key, _buffer);
1563}
1564
1565#endif /* CONFIG_KEYS */
1566
1567#ifdef CONFIG_AUDIT
1568
1569int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1570{
1571 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1572}
1573
1574int security_audit_rule_known(struct audit_krule *krule)
1575{
1576 return call_int_hook(audit_rule_known, 0, krule);
1577}
1578
1579void security_audit_rule_free(void *lsmrule)
1580{
1581 call_void_hook(audit_rule_free, lsmrule);
1582}
1583
1584int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1585 struct audit_context *actx)
1586{
1587 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1588 actx);
1589}
1590#endif /* CONFIG_AUDIT */
1591
1592struct security_hook_heads security_hook_heads = {
1593 .binder_set_context_mgr =
1594 LIST_HEAD_INIT(security_hook_heads.binder_set_context_mgr),
1595 .binder_transaction =
1596 LIST_HEAD_INIT(security_hook_heads.binder_transaction),
1597 .binder_transfer_binder =
1598 LIST_HEAD_INIT(security_hook_heads.binder_transfer_binder),
1599 .binder_transfer_file =
1600 LIST_HEAD_INIT(security_hook_heads.binder_transfer_file),
1601
1602 .ptrace_access_check =
1603 LIST_HEAD_INIT(security_hook_heads.ptrace_access_check),
1604 .ptrace_traceme =
1605 LIST_HEAD_INIT(security_hook_heads.ptrace_traceme),
1606 .capget = LIST_HEAD_INIT(security_hook_heads.capget),
1607 .capset = LIST_HEAD_INIT(security_hook_heads.capset),
1608 .capable = LIST_HEAD_INIT(security_hook_heads.capable),
1609 .quotactl = LIST_HEAD_INIT(security_hook_heads.quotactl),
1610 .quota_on = LIST_HEAD_INIT(security_hook_heads.quota_on),
1611 .syslog = LIST_HEAD_INIT(security_hook_heads.syslog),
1612 .settime = LIST_HEAD_INIT(security_hook_heads.settime),
1613 .vm_enough_memory =
1614 LIST_HEAD_INIT(security_hook_heads.vm_enough_memory),
1615 .bprm_set_creds =
1616 LIST_HEAD_INIT(security_hook_heads.bprm_set_creds),
1617 .bprm_check_security =
1618 LIST_HEAD_INIT(security_hook_heads.bprm_check_security),
1619 .bprm_secureexec =
1620 LIST_HEAD_INIT(security_hook_heads.bprm_secureexec),
1621 .bprm_committing_creds =
1622 LIST_HEAD_INIT(security_hook_heads.bprm_committing_creds),
1623 .bprm_committed_creds =
1624 LIST_HEAD_INIT(security_hook_heads.bprm_committed_creds),
1625 .sb_alloc_security =
1626 LIST_HEAD_INIT(security_hook_heads.sb_alloc_security),
1627 .sb_free_security =
1628 LIST_HEAD_INIT(security_hook_heads.sb_free_security),
1629 .sb_copy_data = LIST_HEAD_INIT(security_hook_heads.sb_copy_data),
1630 .sb_remount = LIST_HEAD_INIT(security_hook_heads.sb_remount),
1631 .sb_kern_mount =
1632 LIST_HEAD_INIT(security_hook_heads.sb_kern_mount),
1633 .sb_show_options =
1634 LIST_HEAD_INIT(security_hook_heads.sb_show_options),
1635 .sb_statfs = LIST_HEAD_INIT(security_hook_heads.sb_statfs),
1636 .sb_mount = LIST_HEAD_INIT(security_hook_heads.sb_mount),
1637 .sb_umount = LIST_HEAD_INIT(security_hook_heads.sb_umount),
1638 .sb_pivotroot = LIST_HEAD_INIT(security_hook_heads.sb_pivotroot),
1639 .sb_set_mnt_opts =
1640 LIST_HEAD_INIT(security_hook_heads.sb_set_mnt_opts),
1641 .sb_clone_mnt_opts =
1642 LIST_HEAD_INIT(security_hook_heads.sb_clone_mnt_opts),
1643 .sb_parse_opts_str =
1644 LIST_HEAD_INIT(security_hook_heads.sb_parse_opts_str),
1645 .dentry_init_security =
1646 LIST_HEAD_INIT(security_hook_heads.dentry_init_security),
1647 .dentry_create_files_as =
1648 LIST_HEAD_INIT(security_hook_heads.dentry_create_files_as),
1649#ifdef CONFIG_SECURITY_PATH
1650 .path_unlink = LIST_HEAD_INIT(security_hook_heads.path_unlink),
1651 .path_mkdir = LIST_HEAD_INIT(security_hook_heads.path_mkdir),
1652 .path_rmdir = LIST_HEAD_INIT(security_hook_heads.path_rmdir),
1653 .path_mknod = LIST_HEAD_INIT(security_hook_heads.path_mknod),
1654 .path_truncate =
1655 LIST_HEAD_INIT(security_hook_heads.path_truncate),
1656 .path_symlink = LIST_HEAD_INIT(security_hook_heads.path_symlink),
1657 .path_link = LIST_HEAD_INIT(security_hook_heads.path_link),
1658 .path_rename = LIST_HEAD_INIT(security_hook_heads.path_rename),
1659 .path_chmod = LIST_HEAD_INIT(security_hook_heads.path_chmod),
1660 .path_chown = LIST_HEAD_INIT(security_hook_heads.path_chown),
1661 .path_chroot = LIST_HEAD_INIT(security_hook_heads.path_chroot),
1662#endif
1663 .inode_alloc_security =
1664 LIST_HEAD_INIT(security_hook_heads.inode_alloc_security),
1665 .inode_free_security =
1666 LIST_HEAD_INIT(security_hook_heads.inode_free_security),
1667 .inode_init_security =
1668 LIST_HEAD_INIT(security_hook_heads.inode_init_security),
1669 .inode_create = LIST_HEAD_INIT(security_hook_heads.inode_create),
1670 .inode_link = LIST_HEAD_INIT(security_hook_heads.inode_link),
1671 .inode_unlink = LIST_HEAD_INIT(security_hook_heads.inode_unlink),
1672 .inode_symlink =
1673 LIST_HEAD_INIT(security_hook_heads.inode_symlink),
1674 .inode_mkdir = LIST_HEAD_INIT(security_hook_heads.inode_mkdir),
1675 .inode_rmdir = LIST_HEAD_INIT(security_hook_heads.inode_rmdir),
1676 .inode_mknod = LIST_HEAD_INIT(security_hook_heads.inode_mknod),
1677 .inode_rename = LIST_HEAD_INIT(security_hook_heads.inode_rename),
1678 .inode_readlink =
1679 LIST_HEAD_INIT(security_hook_heads.inode_readlink),
1680 .inode_follow_link =
1681 LIST_HEAD_INIT(security_hook_heads.inode_follow_link),
1682 .inode_permission =
1683 LIST_HEAD_INIT(security_hook_heads.inode_permission),
1684 .inode_setattr =
1685 LIST_HEAD_INIT(security_hook_heads.inode_setattr),
1686 .inode_getattr =
1687 LIST_HEAD_INIT(security_hook_heads.inode_getattr),
1688 .inode_setxattr =
1689 LIST_HEAD_INIT(security_hook_heads.inode_setxattr),
1690 .inode_post_setxattr =
1691 LIST_HEAD_INIT(security_hook_heads.inode_post_setxattr),
1692 .inode_getxattr =
1693 LIST_HEAD_INIT(security_hook_heads.inode_getxattr),
1694 .inode_listxattr =
1695 LIST_HEAD_INIT(security_hook_heads.inode_listxattr),
1696 .inode_removexattr =
1697 LIST_HEAD_INIT(security_hook_heads.inode_removexattr),
1698 .inode_need_killpriv =
1699 LIST_HEAD_INIT(security_hook_heads.inode_need_killpriv),
1700 .inode_killpriv =
1701 LIST_HEAD_INIT(security_hook_heads.inode_killpriv),
1702 .inode_getsecurity =
1703 LIST_HEAD_INIT(security_hook_heads.inode_getsecurity),
1704 .inode_setsecurity =
1705 LIST_HEAD_INIT(security_hook_heads.inode_setsecurity),
1706 .inode_listsecurity =
1707 LIST_HEAD_INIT(security_hook_heads.inode_listsecurity),
1708 .inode_getsecid =
1709 LIST_HEAD_INIT(security_hook_heads.inode_getsecid),
1710 .inode_copy_up =
1711 LIST_HEAD_INIT(security_hook_heads.inode_copy_up),
1712 .inode_copy_up_xattr =
1713 LIST_HEAD_INIT(security_hook_heads.inode_copy_up_xattr),
1714 .file_permission =
1715 LIST_HEAD_INIT(security_hook_heads.file_permission),
1716 .file_alloc_security =
1717 LIST_HEAD_INIT(security_hook_heads.file_alloc_security),
1718 .file_free_security =
1719 LIST_HEAD_INIT(security_hook_heads.file_free_security),
1720 .file_ioctl = LIST_HEAD_INIT(security_hook_heads.file_ioctl),
1721 .mmap_addr = LIST_HEAD_INIT(security_hook_heads.mmap_addr),
1722 .mmap_file = LIST_HEAD_INIT(security_hook_heads.mmap_file),
1723 .file_mprotect =
1724 LIST_HEAD_INIT(security_hook_heads.file_mprotect),
1725 .file_lock = LIST_HEAD_INIT(security_hook_heads.file_lock),
1726 .file_fcntl = LIST_HEAD_INIT(security_hook_heads.file_fcntl),
1727 .file_set_fowner =
1728 LIST_HEAD_INIT(security_hook_heads.file_set_fowner),
1729 .file_send_sigiotask =
1730 LIST_HEAD_INIT(security_hook_heads.file_send_sigiotask),
1731 .file_receive = LIST_HEAD_INIT(security_hook_heads.file_receive),
1732 .file_open = LIST_HEAD_INIT(security_hook_heads.file_open),
1733 .task_create = LIST_HEAD_INIT(security_hook_heads.task_create),
1734 .task_free = LIST_HEAD_INIT(security_hook_heads.task_free),
1735 .cred_alloc_blank =
1736 LIST_HEAD_INIT(security_hook_heads.cred_alloc_blank),
1737 .cred_free = LIST_HEAD_INIT(security_hook_heads.cred_free),
1738 .cred_prepare = LIST_HEAD_INIT(security_hook_heads.cred_prepare),
1739 .cred_transfer =
1740 LIST_HEAD_INIT(security_hook_heads.cred_transfer),
1741 .kernel_act_as =
1742 LIST_HEAD_INIT(security_hook_heads.kernel_act_as),
1743 .kernel_create_files_as =
1744 LIST_HEAD_INIT(security_hook_heads.kernel_create_files_as),
1745 .kernel_module_request =
1746 LIST_HEAD_INIT(security_hook_heads.kernel_module_request),
1747 .kernel_read_file =
1748 LIST_HEAD_INIT(security_hook_heads.kernel_read_file),
1749 .kernel_post_read_file =
1750 LIST_HEAD_INIT(security_hook_heads.kernel_post_read_file),
1751 .task_fix_setuid =
1752 LIST_HEAD_INIT(security_hook_heads.task_fix_setuid),
1753 .task_setpgid = LIST_HEAD_INIT(security_hook_heads.task_setpgid),
1754 .task_getpgid = LIST_HEAD_INIT(security_hook_heads.task_getpgid),
1755 .task_getsid = LIST_HEAD_INIT(security_hook_heads.task_getsid),
1756 .task_getsecid =
1757 LIST_HEAD_INIT(security_hook_heads.task_getsecid),
1758 .task_setnice = LIST_HEAD_INIT(security_hook_heads.task_setnice),
1759 .task_setioprio =
1760 LIST_HEAD_INIT(security_hook_heads.task_setioprio),
1761 .task_getioprio =
1762 LIST_HEAD_INIT(security_hook_heads.task_getioprio),
1763 .task_setrlimit =
1764 LIST_HEAD_INIT(security_hook_heads.task_setrlimit),
1765 .task_setscheduler =
1766 LIST_HEAD_INIT(security_hook_heads.task_setscheduler),
1767 .task_getscheduler =
1768 LIST_HEAD_INIT(security_hook_heads.task_getscheduler),
1769 .task_movememory =
1770 LIST_HEAD_INIT(security_hook_heads.task_movememory),
1771 .task_kill = LIST_HEAD_INIT(security_hook_heads.task_kill),
1772 .task_wait = LIST_HEAD_INIT(security_hook_heads.task_wait),
1773 .task_prctl = LIST_HEAD_INIT(security_hook_heads.task_prctl),
1774 .task_to_inode =
1775 LIST_HEAD_INIT(security_hook_heads.task_to_inode),
1776 .ipc_permission =
1777 LIST_HEAD_INIT(security_hook_heads.ipc_permission),
1778 .ipc_getsecid = LIST_HEAD_INIT(security_hook_heads.ipc_getsecid),
1779 .msg_msg_alloc_security =
1780 LIST_HEAD_INIT(security_hook_heads.msg_msg_alloc_security),
1781 .msg_msg_free_security =
1782 LIST_HEAD_INIT(security_hook_heads.msg_msg_free_security),
1783 .msg_queue_alloc_security =
1784 LIST_HEAD_INIT(security_hook_heads.msg_queue_alloc_security),
1785 .msg_queue_free_security =
1786 LIST_HEAD_INIT(security_hook_heads.msg_queue_free_security),
1787 .msg_queue_associate =
1788 LIST_HEAD_INIT(security_hook_heads.msg_queue_associate),
1789 .msg_queue_msgctl =
1790 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgctl),
1791 .msg_queue_msgsnd =
1792 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgsnd),
1793 .msg_queue_msgrcv =
1794 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgrcv),
1795 .shm_alloc_security =
1796 LIST_HEAD_INIT(security_hook_heads.shm_alloc_security),
1797 .shm_free_security =
1798 LIST_HEAD_INIT(security_hook_heads.shm_free_security),
1799 .shm_associate =
1800 LIST_HEAD_INIT(security_hook_heads.shm_associate),
1801 .shm_shmctl = LIST_HEAD_INIT(security_hook_heads.shm_shmctl),
1802 .shm_shmat = LIST_HEAD_INIT(security_hook_heads.shm_shmat),
1803 .sem_alloc_security =
1804 LIST_HEAD_INIT(security_hook_heads.sem_alloc_security),
1805 .sem_free_security =
1806 LIST_HEAD_INIT(security_hook_heads.sem_free_security),
1807 .sem_associate =
1808 LIST_HEAD_INIT(security_hook_heads.sem_associate),
1809 .sem_semctl = LIST_HEAD_INIT(security_hook_heads.sem_semctl),
1810 .sem_semop = LIST_HEAD_INIT(security_hook_heads.sem_semop),
1811 .netlink_send = LIST_HEAD_INIT(security_hook_heads.netlink_send),
1812 .d_instantiate =
1813 LIST_HEAD_INIT(security_hook_heads.d_instantiate),
1814 .getprocattr = LIST_HEAD_INIT(security_hook_heads.getprocattr),
1815 .setprocattr = LIST_HEAD_INIT(security_hook_heads.setprocattr),
1816 .ismaclabel = LIST_HEAD_INIT(security_hook_heads.ismaclabel),
1817 .secid_to_secctx =
1818 LIST_HEAD_INIT(security_hook_heads.secid_to_secctx),
1819 .secctx_to_secid =
1820 LIST_HEAD_INIT(security_hook_heads.secctx_to_secid),
1821 .release_secctx =
1822 LIST_HEAD_INIT(security_hook_heads.release_secctx),
1823 .inode_invalidate_secctx =
1824 LIST_HEAD_INIT(security_hook_heads.inode_invalidate_secctx),
1825 .inode_notifysecctx =
1826 LIST_HEAD_INIT(security_hook_heads.inode_notifysecctx),
1827 .inode_setsecctx =
1828 LIST_HEAD_INIT(security_hook_heads.inode_setsecctx),
1829 .inode_getsecctx =
1830 LIST_HEAD_INIT(security_hook_heads.inode_getsecctx),
1831#ifdef CONFIG_SECURITY_NETWORK
1832 .unix_stream_connect =
1833 LIST_HEAD_INIT(security_hook_heads.unix_stream_connect),
1834 .unix_may_send =
1835 LIST_HEAD_INIT(security_hook_heads.unix_may_send),
1836 .socket_create =
1837 LIST_HEAD_INIT(security_hook_heads.socket_create),
1838 .socket_post_create =
1839 LIST_HEAD_INIT(security_hook_heads.socket_post_create),
1840 .socket_bind = LIST_HEAD_INIT(security_hook_heads.socket_bind),
1841 .socket_connect =
1842 LIST_HEAD_INIT(security_hook_heads.socket_connect),
1843 .socket_listen =
1844 LIST_HEAD_INIT(security_hook_heads.socket_listen),
1845 .socket_accept =
1846 LIST_HEAD_INIT(security_hook_heads.socket_accept),
1847 .socket_sendmsg =
1848 LIST_HEAD_INIT(security_hook_heads.socket_sendmsg),
1849 .socket_recvmsg =
1850 LIST_HEAD_INIT(security_hook_heads.socket_recvmsg),
1851 .socket_getsockname =
1852 LIST_HEAD_INIT(security_hook_heads.socket_getsockname),
1853 .socket_getpeername =
1854 LIST_HEAD_INIT(security_hook_heads.socket_getpeername),
1855 .socket_getsockopt =
1856 LIST_HEAD_INIT(security_hook_heads.socket_getsockopt),
1857 .socket_setsockopt =
1858 LIST_HEAD_INIT(security_hook_heads.socket_setsockopt),
1859 .socket_shutdown =
1860 LIST_HEAD_INIT(security_hook_heads.socket_shutdown),
1861 .socket_sock_rcv_skb =
1862 LIST_HEAD_INIT(security_hook_heads.socket_sock_rcv_skb),
1863 .socket_getpeersec_stream =
1864 LIST_HEAD_INIT(security_hook_heads.socket_getpeersec_stream),
1865 .socket_getpeersec_dgram =
1866 LIST_HEAD_INIT(security_hook_heads.socket_getpeersec_dgram),
1867 .sk_alloc_security =
1868 LIST_HEAD_INIT(security_hook_heads.sk_alloc_security),
1869 .sk_free_security =
1870 LIST_HEAD_INIT(security_hook_heads.sk_free_security),
1871 .sk_clone_security =
1872 LIST_HEAD_INIT(security_hook_heads.sk_clone_security),
1873 .sk_getsecid = LIST_HEAD_INIT(security_hook_heads.sk_getsecid),
1874 .sock_graft = LIST_HEAD_INIT(security_hook_heads.sock_graft),
1875 .inet_conn_request =
1876 LIST_HEAD_INIT(security_hook_heads.inet_conn_request),
1877 .inet_csk_clone =
1878 LIST_HEAD_INIT(security_hook_heads.inet_csk_clone),
1879 .inet_conn_established =
1880 LIST_HEAD_INIT(security_hook_heads.inet_conn_established),
1881 .secmark_relabel_packet =
1882 LIST_HEAD_INIT(security_hook_heads.secmark_relabel_packet),
1883 .secmark_refcount_inc =
1884 LIST_HEAD_INIT(security_hook_heads.secmark_refcount_inc),
1885 .secmark_refcount_dec =
1886 LIST_HEAD_INIT(security_hook_heads.secmark_refcount_dec),
1887 .req_classify_flow =
1888 LIST_HEAD_INIT(security_hook_heads.req_classify_flow),
1889 .tun_dev_alloc_security =
1890 LIST_HEAD_INIT(security_hook_heads.tun_dev_alloc_security),
1891 .tun_dev_free_security =
1892 LIST_HEAD_INIT(security_hook_heads.tun_dev_free_security),
1893 .tun_dev_create =
1894 LIST_HEAD_INIT(security_hook_heads.tun_dev_create),
1895 .tun_dev_attach_queue =
1896 LIST_HEAD_INIT(security_hook_heads.tun_dev_attach_queue),
1897 .tun_dev_attach =
1898 LIST_HEAD_INIT(security_hook_heads.tun_dev_attach),
1899 .tun_dev_open = LIST_HEAD_INIT(security_hook_heads.tun_dev_open),
1900#endif /* CONFIG_SECURITY_NETWORK */
1901#ifdef CONFIG_SECURITY_NETWORK_XFRM
1902 .xfrm_policy_alloc_security =
1903 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_alloc_security),
1904 .xfrm_policy_clone_security =
1905 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_clone_security),
1906 .xfrm_policy_free_security =
1907 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_free_security),
1908 .xfrm_policy_delete_security =
1909 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_delete_security),
1910 .xfrm_state_alloc =
1911 LIST_HEAD_INIT(security_hook_heads.xfrm_state_alloc),
1912 .xfrm_state_alloc_acquire =
1913 LIST_HEAD_INIT(security_hook_heads.xfrm_state_alloc_acquire),
1914 .xfrm_state_free_security =
1915 LIST_HEAD_INIT(security_hook_heads.xfrm_state_free_security),
1916 .xfrm_state_delete_security =
1917 LIST_HEAD_INIT(security_hook_heads.xfrm_state_delete_security),
1918 .xfrm_policy_lookup =
1919 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_lookup),
1920 .xfrm_state_pol_flow_match =
1921 LIST_HEAD_INIT(security_hook_heads.xfrm_state_pol_flow_match),
1922 .xfrm_decode_session =
1923 LIST_HEAD_INIT(security_hook_heads.xfrm_decode_session),
1924#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1925#ifdef CONFIG_KEYS
1926 .key_alloc = LIST_HEAD_INIT(security_hook_heads.key_alloc),
1927 .key_free = LIST_HEAD_INIT(security_hook_heads.key_free),
1928 .key_permission =
1929 LIST_HEAD_INIT(security_hook_heads.key_permission),
1930 .key_getsecurity =
1931 LIST_HEAD_INIT(security_hook_heads.key_getsecurity),
1932#endif /* CONFIG_KEYS */
1933#ifdef CONFIG_AUDIT
1934 .audit_rule_init =
1935 LIST_HEAD_INIT(security_hook_heads.audit_rule_init),
1936 .audit_rule_known =
1937 LIST_HEAD_INIT(security_hook_heads.audit_rule_known),
1938 .audit_rule_match =
1939 LIST_HEAD_INIT(security_hook_heads.audit_rule_match),
1940 .audit_rule_free =
1941 LIST_HEAD_INIT(security_hook_heads.audit_rule_free),
1942#endif /* CONFIG_AUDIT */
1943};