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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/lsm_hooks.h>
20#include <linux/integrity.h>
21#include <linux/ima.h>
22#include <linux/evm.h>
23#include <linux/fsnotify.h>
24#include <linux/mman.h>
25#include <linux/mount.h>
26#include <linux/personality.h>
27#include <linux/backing-dev.h>
28#include <net/flow.h>
29
30#define MAX_LSM_EVM_XATTR 2
31
32/* Maximum number of letters for an LSM name string */
33#define SECURITY_NAME_MAX 10
34
35/* Boot-time LSM user choice */
36static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
37 CONFIG_DEFAULT_SECURITY;
38
39static void __init do_security_initcalls(void)
40{
41 initcall_t *call;
42 call = __security_initcall_start;
43 while (call < __security_initcall_end) {
44 (*call) ();
45 call++;
46 }
47}
48
49/**
50 * security_init - initializes the security framework
51 *
52 * This should be called early in the kernel initialization sequence.
53 */
54int __init security_init(void)
55{
56 pr_info("Security Framework initialized\n");
57
58 /*
59 * Load minor LSMs, with the capability module always first.
60 */
61 capability_add_hooks();
62 yama_add_hooks();
63
64 /*
65 * Load all the remaining security modules.
66 */
67 do_security_initcalls();
68
69 return 0;
70}
71
72/* Save user chosen LSM */
73static int __init choose_lsm(char *str)
74{
75 strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
76 return 1;
77}
78__setup("security=", choose_lsm);
79
80/**
81 * security_module_enable - Load given security module on boot ?
82 * @module: the name of the module
83 *
84 * Each LSM must pass this method before registering its own operations
85 * to avoid security registration races. This method may also be used
86 * to check if your LSM is currently loaded during kernel initialization.
87 *
88 * Return true if:
89 * -The passed LSM is the one chosen by user at boot time,
90 * -or the passed LSM is configured as the default and the user did not
91 * choose an alternate LSM at boot time.
92 * Otherwise, return false.
93 */
94int __init security_module_enable(const char *module)
95{
96 return !strcmp(module, chosen_lsm);
97}
98
99/*
100 * Hook list operation macros.
101 *
102 * call_void_hook:
103 * This is a hook that does not return a value.
104 *
105 * call_int_hook:
106 * This is a hook that returns a value.
107 */
108
109#define call_void_hook(FUNC, ...) \
110 do { \
111 struct security_hook_list *P; \
112 \
113 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
114 P->hook.FUNC(__VA_ARGS__); \
115 } while (0)
116
117#define call_int_hook(FUNC, IRC, ...) ({ \
118 int RC = IRC; \
119 do { \
120 struct security_hook_list *P; \
121 \
122 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
123 RC = P->hook.FUNC(__VA_ARGS__); \
124 if (RC != 0) \
125 break; \
126 } \
127 } while (0); \
128 RC; \
129})
130
131/* Security operations */
132
133int security_binder_set_context_mgr(struct task_struct *mgr)
134{
135 return call_int_hook(binder_set_context_mgr, 0, mgr);
136}
137
138int security_binder_transaction(struct task_struct *from,
139 struct task_struct *to)
140{
141 return call_int_hook(binder_transaction, 0, from, to);
142}
143
144int security_binder_transfer_binder(struct task_struct *from,
145 struct task_struct *to)
146{
147 return call_int_hook(binder_transfer_binder, 0, from, to);
148}
149
150int security_binder_transfer_file(struct task_struct *from,
151 struct task_struct *to, struct file *file)
152{
153 return call_int_hook(binder_transfer_file, 0, from, to, file);
154}
155
156int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
157{
158 return call_int_hook(ptrace_access_check, 0, child, mode);
159}
160
161int security_ptrace_traceme(struct task_struct *parent)
162{
163 return call_int_hook(ptrace_traceme, 0, parent);
164}
165
166int security_capget(struct task_struct *target,
167 kernel_cap_t *effective,
168 kernel_cap_t *inheritable,
169 kernel_cap_t *permitted)
170{
171 return call_int_hook(capget, 0, target,
172 effective, inheritable, permitted);
173}
174
175int security_capset(struct cred *new, const struct cred *old,
176 const kernel_cap_t *effective,
177 const kernel_cap_t *inheritable,
178 const kernel_cap_t *permitted)
179{
180 return call_int_hook(capset, 0, new, old,
181 effective, inheritable, permitted);
182}
183
184int security_capable(const struct cred *cred, struct user_namespace *ns,
185 int cap)
186{
187 return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
188}
189
190int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
191 int cap)
192{
193 return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
194}
195
196int security_quotactl(int cmds, int type, int id, struct super_block *sb)
197{
198 return call_int_hook(quotactl, 0, cmds, type, id, sb);
199}
200
201int security_quota_on(struct dentry *dentry)
202{
203 return call_int_hook(quota_on, 0, dentry);
204}
205
206int security_syslog(int type)
207{
208 return call_int_hook(syslog, 0, type);
209}
210
211int security_settime(const struct timespec *ts, const struct timezone *tz)
212{
213 return call_int_hook(settime, 0, ts, tz);
214}
215
216int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
217{
218 struct security_hook_list *hp;
219 int cap_sys_admin = 1;
220 int rc;
221
222 /*
223 * The module will respond with a positive value if
224 * it thinks the __vm_enough_memory() call should be
225 * made with the cap_sys_admin set. If all of the modules
226 * agree that it should be set it will. If any module
227 * thinks it should not be set it won't.
228 */
229 list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
230 rc = hp->hook.vm_enough_memory(mm, pages);
231 if (rc <= 0) {
232 cap_sys_admin = 0;
233 break;
234 }
235 }
236 return __vm_enough_memory(mm, pages, cap_sys_admin);
237}
238
239int security_bprm_set_creds(struct linux_binprm *bprm)
240{
241 return call_int_hook(bprm_set_creds, 0, bprm);
242}
243
244int security_bprm_check(struct linux_binprm *bprm)
245{
246 int ret;
247
248 ret = call_int_hook(bprm_check_security, 0, bprm);
249 if (ret)
250 return ret;
251 return ima_bprm_check(bprm);
252}
253
254void security_bprm_committing_creds(struct linux_binprm *bprm)
255{
256 call_void_hook(bprm_committing_creds, bprm);
257}
258
259void security_bprm_committed_creds(struct linux_binprm *bprm)
260{
261 call_void_hook(bprm_committed_creds, bprm);
262}
263
264int security_bprm_secureexec(struct linux_binprm *bprm)
265{
266 return call_int_hook(bprm_secureexec, 0, bprm);
267}
268
269int security_sb_alloc(struct super_block *sb)
270{
271 return call_int_hook(sb_alloc_security, 0, sb);
272}
273
274void security_sb_free(struct super_block *sb)
275{
276 call_void_hook(sb_free_security, sb);
277}
278
279int security_sb_copy_data(char *orig, char *copy)
280{
281 return call_int_hook(sb_copy_data, 0, orig, copy);
282}
283EXPORT_SYMBOL(security_sb_copy_data);
284
285int security_sb_remount(struct super_block *sb, void *data)
286{
287 return call_int_hook(sb_remount, 0, sb, data);
288}
289
290int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
291{
292 return call_int_hook(sb_kern_mount, 0, sb, flags, data);
293}
294
295int security_sb_show_options(struct seq_file *m, struct super_block *sb)
296{
297 return call_int_hook(sb_show_options, 0, m, sb);
298}
299
300int security_sb_statfs(struct dentry *dentry)
301{
302 return call_int_hook(sb_statfs, 0, dentry);
303}
304
305int security_sb_mount(const char *dev_name, struct path *path,
306 const char *type, unsigned long flags, void *data)
307{
308 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
309}
310
311int security_sb_umount(struct vfsmount *mnt, int flags)
312{
313 return call_int_hook(sb_umount, 0, mnt, flags);
314}
315
316int security_sb_pivotroot(struct path *old_path, struct path *new_path)
317{
318 return call_int_hook(sb_pivotroot, 0, old_path, new_path);
319}
320
321int security_sb_set_mnt_opts(struct super_block *sb,
322 struct security_mnt_opts *opts,
323 unsigned long kern_flags,
324 unsigned long *set_kern_flags)
325{
326 return call_int_hook(sb_set_mnt_opts,
327 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
328 opts, kern_flags, set_kern_flags);
329}
330EXPORT_SYMBOL(security_sb_set_mnt_opts);
331
332int security_sb_clone_mnt_opts(const struct super_block *oldsb,
333 struct super_block *newsb)
334{
335 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb);
336}
337EXPORT_SYMBOL(security_sb_clone_mnt_opts);
338
339int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
340{
341 return call_int_hook(sb_parse_opts_str, 0, options, opts);
342}
343EXPORT_SYMBOL(security_sb_parse_opts_str);
344
345int security_inode_alloc(struct inode *inode)
346{
347 inode->i_security = NULL;
348 return call_int_hook(inode_alloc_security, 0, inode);
349}
350
351void security_inode_free(struct inode *inode)
352{
353 integrity_inode_free(inode);
354 call_void_hook(inode_free_security, inode);
355}
356
357int security_dentry_init_security(struct dentry *dentry, int mode,
358 struct qstr *name, void **ctx,
359 u32 *ctxlen)
360{
361 return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
362 name, ctx, ctxlen);
363}
364EXPORT_SYMBOL(security_dentry_init_security);
365
366int security_inode_init_security(struct inode *inode, struct inode *dir,
367 const struct qstr *qstr,
368 const initxattrs initxattrs, void *fs_data)
369{
370 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
371 struct xattr *lsm_xattr, *evm_xattr, *xattr;
372 int ret;
373
374 if (unlikely(IS_PRIVATE(inode)))
375 return 0;
376
377 if (!initxattrs)
378 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
379 dir, qstr, NULL, NULL, NULL);
380 memset(new_xattrs, 0, sizeof(new_xattrs));
381 lsm_xattr = new_xattrs;
382 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
383 &lsm_xattr->name,
384 &lsm_xattr->value,
385 &lsm_xattr->value_len);
386 if (ret)
387 goto out;
388
389 evm_xattr = lsm_xattr + 1;
390 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
391 if (ret)
392 goto out;
393 ret = initxattrs(inode, new_xattrs, fs_data);
394out:
395 for (xattr = new_xattrs; xattr->value != NULL; xattr++)
396 kfree(xattr->value);
397 return (ret == -EOPNOTSUPP) ? 0 : ret;
398}
399EXPORT_SYMBOL(security_inode_init_security);
400
401int security_old_inode_init_security(struct inode *inode, struct inode *dir,
402 const struct qstr *qstr, const char **name,
403 void **value, size_t *len)
404{
405 if (unlikely(IS_PRIVATE(inode)))
406 return -EOPNOTSUPP;
407 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
408 qstr, name, value, len);
409}
410EXPORT_SYMBOL(security_old_inode_init_security);
411
412#ifdef CONFIG_SECURITY_PATH
413int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
414 unsigned int dev)
415{
416 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
417 return 0;
418 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
419}
420EXPORT_SYMBOL(security_path_mknod);
421
422int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
423{
424 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
425 return 0;
426 return call_int_hook(path_mkdir, 0, dir, dentry, mode);
427}
428EXPORT_SYMBOL(security_path_mkdir);
429
430int security_path_rmdir(struct path *dir, struct dentry *dentry)
431{
432 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
433 return 0;
434 return call_int_hook(path_rmdir, 0, dir, dentry);
435}
436
437int security_path_unlink(struct path *dir, struct dentry *dentry)
438{
439 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
440 return 0;
441 return call_int_hook(path_unlink, 0, dir, dentry);
442}
443EXPORT_SYMBOL(security_path_unlink);
444
445int security_path_symlink(struct path *dir, struct dentry *dentry,
446 const char *old_name)
447{
448 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
449 return 0;
450 return call_int_hook(path_symlink, 0, dir, dentry, old_name);
451}
452
453int security_path_link(struct dentry *old_dentry, struct path *new_dir,
454 struct dentry *new_dentry)
455{
456 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
457 return 0;
458 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
459}
460
461int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
462 struct path *new_dir, struct dentry *new_dentry,
463 unsigned int flags)
464{
465 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
466 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
467 return 0;
468
469 if (flags & RENAME_EXCHANGE) {
470 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
471 old_dir, old_dentry);
472 if (err)
473 return err;
474 }
475
476 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
477 new_dentry);
478}
479EXPORT_SYMBOL(security_path_rename);
480
481int security_path_truncate(struct path *path)
482{
483 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
484 return 0;
485 return call_int_hook(path_truncate, 0, path);
486}
487
488int security_path_chmod(struct path *path, umode_t mode)
489{
490 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
491 return 0;
492 return call_int_hook(path_chmod, 0, path, mode);
493}
494
495int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
496{
497 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
498 return 0;
499 return call_int_hook(path_chown, 0, path, uid, gid);
500}
501
502int security_path_chroot(struct path *path)
503{
504 return call_int_hook(path_chroot, 0, path);
505}
506#endif
507
508int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
509{
510 if (unlikely(IS_PRIVATE(dir)))
511 return 0;
512 return call_int_hook(inode_create, 0, dir, dentry, mode);
513}
514EXPORT_SYMBOL_GPL(security_inode_create);
515
516int security_inode_link(struct dentry *old_dentry, struct inode *dir,
517 struct dentry *new_dentry)
518{
519 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
520 return 0;
521 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
522}
523
524int security_inode_unlink(struct inode *dir, struct dentry *dentry)
525{
526 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
527 return 0;
528 return call_int_hook(inode_unlink, 0, dir, dentry);
529}
530
531int security_inode_symlink(struct inode *dir, struct dentry *dentry,
532 const char *old_name)
533{
534 if (unlikely(IS_PRIVATE(dir)))
535 return 0;
536 return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
537}
538
539int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
540{
541 if (unlikely(IS_PRIVATE(dir)))
542 return 0;
543 return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
544}
545EXPORT_SYMBOL_GPL(security_inode_mkdir);
546
547int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
548{
549 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
550 return 0;
551 return call_int_hook(inode_rmdir, 0, dir, dentry);
552}
553
554int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
555{
556 if (unlikely(IS_PRIVATE(dir)))
557 return 0;
558 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
559}
560
561int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
562 struct inode *new_dir, struct dentry *new_dentry,
563 unsigned int flags)
564{
565 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
566 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
567 return 0;
568
569 if (flags & RENAME_EXCHANGE) {
570 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
571 old_dir, old_dentry);
572 if (err)
573 return err;
574 }
575
576 return call_int_hook(inode_rename, 0, old_dir, old_dentry,
577 new_dir, new_dentry);
578}
579
580int security_inode_readlink(struct dentry *dentry)
581{
582 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
583 return 0;
584 return call_int_hook(inode_readlink, 0, dentry);
585}
586
587int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
588 bool rcu)
589{
590 if (unlikely(IS_PRIVATE(inode)))
591 return 0;
592 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
593}
594
595int security_inode_permission(struct inode *inode, int mask)
596{
597 if (unlikely(IS_PRIVATE(inode)))
598 return 0;
599 return call_int_hook(inode_permission, 0, inode, mask);
600}
601
602int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
603{
604 int ret;
605
606 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
607 return 0;
608 ret = call_int_hook(inode_setattr, 0, dentry, attr);
609 if (ret)
610 return ret;
611 return evm_inode_setattr(dentry, attr);
612}
613EXPORT_SYMBOL_GPL(security_inode_setattr);
614
615int security_inode_getattr(const struct path *path)
616{
617 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
618 return 0;
619 return call_int_hook(inode_getattr, 0, path);
620}
621
622int security_inode_setxattr(struct dentry *dentry, const char *name,
623 const void *value, size_t size, int flags)
624{
625 int ret;
626
627 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
628 return 0;
629 /*
630 * SELinux and Smack integrate the cap call,
631 * so assume that all LSMs supplying this call do so.
632 */
633 ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
634 flags);
635
636 if (ret == 1)
637 ret = cap_inode_setxattr(dentry, name, value, size, flags);
638 if (ret)
639 return ret;
640 ret = ima_inode_setxattr(dentry, name, value, size);
641 if (ret)
642 return ret;
643 return evm_inode_setxattr(dentry, name, value, size);
644}
645
646void security_inode_post_setxattr(struct dentry *dentry, const char *name,
647 const void *value, size_t size, int flags)
648{
649 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
650 return;
651 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
652 evm_inode_post_setxattr(dentry, name, value, size);
653}
654
655int security_inode_getxattr(struct dentry *dentry, const char *name)
656{
657 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
658 return 0;
659 return call_int_hook(inode_getxattr, 0, dentry, name);
660}
661
662int security_inode_listxattr(struct dentry *dentry)
663{
664 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
665 return 0;
666 return call_int_hook(inode_listxattr, 0, dentry);
667}
668
669int security_inode_removexattr(struct dentry *dentry, const char *name)
670{
671 int ret;
672
673 if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
674 return 0;
675 /*
676 * SELinux and Smack integrate the cap call,
677 * so assume that all LSMs supplying this call do so.
678 */
679 ret = call_int_hook(inode_removexattr, 1, dentry, name);
680 if (ret == 1)
681 ret = cap_inode_removexattr(dentry, name);
682 if (ret)
683 return ret;
684 ret = ima_inode_removexattr(dentry, name);
685 if (ret)
686 return ret;
687 return evm_inode_removexattr(dentry, name);
688}
689
690int security_inode_need_killpriv(struct dentry *dentry)
691{
692 return call_int_hook(inode_need_killpriv, 0, dentry);
693}
694
695int security_inode_killpriv(struct dentry *dentry)
696{
697 return call_int_hook(inode_killpriv, 0, dentry);
698}
699
700int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
701{
702 if (unlikely(IS_PRIVATE(inode)))
703 return -EOPNOTSUPP;
704 return call_int_hook(inode_getsecurity, -EOPNOTSUPP, inode, name,
705 buffer, alloc);
706}
707
708int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
709{
710 if (unlikely(IS_PRIVATE(inode)))
711 return -EOPNOTSUPP;
712 return call_int_hook(inode_setsecurity, -EOPNOTSUPP, inode, name,
713 value, size, flags);
714}
715
716int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
717{
718 if (unlikely(IS_PRIVATE(inode)))
719 return 0;
720 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
721}
722EXPORT_SYMBOL(security_inode_listsecurity);
723
724void security_inode_getsecid(struct inode *inode, u32 *secid)
725{
726 call_void_hook(inode_getsecid, inode, secid);
727}
728
729int security_file_permission(struct file *file, int mask)
730{
731 int ret;
732
733 ret = call_int_hook(file_permission, 0, file, mask);
734 if (ret)
735 return ret;
736
737 return fsnotify_perm(file, mask);
738}
739
740int security_file_alloc(struct file *file)
741{
742 return call_int_hook(file_alloc_security, 0, file);
743}
744
745void security_file_free(struct file *file)
746{
747 call_void_hook(file_free_security, file);
748}
749
750int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
751{
752 return call_int_hook(file_ioctl, 0, file, cmd, arg);
753}
754
755static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
756{
757 /*
758 * Does we have PROT_READ and does the application expect
759 * it to imply PROT_EXEC? If not, nothing to talk about...
760 */
761 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
762 return prot;
763 if (!(current->personality & READ_IMPLIES_EXEC))
764 return prot;
765 /*
766 * if that's an anonymous mapping, let it.
767 */
768 if (!file)
769 return prot | PROT_EXEC;
770 /*
771 * ditto if it's not on noexec mount, except that on !MMU we need
772 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
773 */
774 if (!path_noexec(&file->f_path)) {
775#ifndef CONFIG_MMU
776 if (file->f_op->mmap_capabilities) {
777 unsigned caps = file->f_op->mmap_capabilities(file);
778 if (!(caps & NOMMU_MAP_EXEC))
779 return prot;
780 }
781#endif
782 return prot | PROT_EXEC;
783 }
784 /* anything on noexec mount won't get PROT_EXEC */
785 return prot;
786}
787
788int security_mmap_file(struct file *file, unsigned long prot,
789 unsigned long flags)
790{
791 int ret;
792 ret = call_int_hook(mmap_file, 0, file, prot,
793 mmap_prot(file, prot), flags);
794 if (ret)
795 return ret;
796 return ima_file_mmap(file, prot);
797}
798
799int security_mmap_addr(unsigned long addr)
800{
801 return call_int_hook(mmap_addr, 0, addr);
802}
803
804int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
805 unsigned long prot)
806{
807 return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
808}
809
810int security_file_lock(struct file *file, unsigned int cmd)
811{
812 return call_int_hook(file_lock, 0, file, cmd);
813}
814
815int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
816{
817 return call_int_hook(file_fcntl, 0, file, cmd, arg);
818}
819
820void security_file_set_fowner(struct file *file)
821{
822 call_void_hook(file_set_fowner, file);
823}
824
825int security_file_send_sigiotask(struct task_struct *tsk,
826 struct fown_struct *fown, int sig)
827{
828 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
829}
830
831int security_file_receive(struct file *file)
832{
833 return call_int_hook(file_receive, 0, file);
834}
835
836int security_file_open(struct file *file, const struct cred *cred)
837{
838 int ret;
839
840 ret = call_int_hook(file_open, 0, file, cred);
841 if (ret)
842 return ret;
843
844 return fsnotify_perm(file, MAY_OPEN);
845}
846
847int security_task_create(unsigned long clone_flags)
848{
849 return call_int_hook(task_create, 0, clone_flags);
850}
851
852void security_task_free(struct task_struct *task)
853{
854 call_void_hook(task_free, task);
855}
856
857int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
858{
859 return call_int_hook(cred_alloc_blank, 0, cred, gfp);
860}
861
862void security_cred_free(struct cred *cred)
863{
864 call_void_hook(cred_free, cred);
865}
866
867int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
868{
869 return call_int_hook(cred_prepare, 0, new, old, gfp);
870}
871
872void security_transfer_creds(struct cred *new, const struct cred *old)
873{
874 call_void_hook(cred_transfer, new, old);
875}
876
877int security_kernel_act_as(struct cred *new, u32 secid)
878{
879 return call_int_hook(kernel_act_as, 0, new, secid);
880}
881
882int security_kernel_create_files_as(struct cred *new, struct inode *inode)
883{
884 return call_int_hook(kernel_create_files_as, 0, new, inode);
885}
886
887int security_kernel_module_request(char *kmod_name)
888{
889 return call_int_hook(kernel_module_request, 0, kmod_name);
890}
891
892int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
893{
894 int ret;
895
896 ret = call_int_hook(kernel_read_file, 0, file, id);
897 if (ret)
898 return ret;
899 return ima_read_file(file, id);
900}
901EXPORT_SYMBOL_GPL(security_kernel_read_file);
902
903int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
904 enum kernel_read_file_id id)
905{
906 int ret;
907
908 ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
909 if (ret)
910 return ret;
911 return ima_post_read_file(file, buf, size, id);
912}
913EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
914
915int security_task_fix_setuid(struct cred *new, const struct cred *old,
916 int flags)
917{
918 return call_int_hook(task_fix_setuid, 0, new, old, flags);
919}
920
921int security_task_setpgid(struct task_struct *p, pid_t pgid)
922{
923 return call_int_hook(task_setpgid, 0, p, pgid);
924}
925
926int security_task_getpgid(struct task_struct *p)
927{
928 return call_int_hook(task_getpgid, 0, p);
929}
930
931int security_task_getsid(struct task_struct *p)
932{
933 return call_int_hook(task_getsid, 0, p);
934}
935
936void security_task_getsecid(struct task_struct *p, u32 *secid)
937{
938 *secid = 0;
939 call_void_hook(task_getsecid, p, secid);
940}
941EXPORT_SYMBOL(security_task_getsecid);
942
943int security_task_setnice(struct task_struct *p, int nice)
944{
945 return call_int_hook(task_setnice, 0, p, nice);
946}
947
948int security_task_setioprio(struct task_struct *p, int ioprio)
949{
950 return call_int_hook(task_setioprio, 0, p, ioprio);
951}
952
953int security_task_getioprio(struct task_struct *p)
954{
955 return call_int_hook(task_getioprio, 0, p);
956}
957
958int security_task_setrlimit(struct task_struct *p, unsigned int resource,
959 struct rlimit *new_rlim)
960{
961 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
962}
963
964int security_task_setscheduler(struct task_struct *p)
965{
966 return call_int_hook(task_setscheduler, 0, p);
967}
968
969int security_task_getscheduler(struct task_struct *p)
970{
971 return call_int_hook(task_getscheduler, 0, p);
972}
973
974int security_task_movememory(struct task_struct *p)
975{
976 return call_int_hook(task_movememory, 0, p);
977}
978
979int security_task_kill(struct task_struct *p, struct siginfo *info,
980 int sig, u32 secid)
981{
982 return call_int_hook(task_kill, 0, p, info, sig, secid);
983}
984
985int security_task_wait(struct task_struct *p)
986{
987 return call_int_hook(task_wait, 0, p);
988}
989
990int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
991 unsigned long arg4, unsigned long arg5)
992{
993 int thisrc;
994 int rc = -ENOSYS;
995 struct security_hook_list *hp;
996
997 list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
998 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
999 if (thisrc != -ENOSYS) {
1000 rc = thisrc;
1001 if (thisrc != 0)
1002 break;
1003 }
1004 }
1005 return rc;
1006}
1007
1008void security_task_to_inode(struct task_struct *p, struct inode *inode)
1009{
1010 call_void_hook(task_to_inode, p, inode);
1011}
1012
1013int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1014{
1015 return call_int_hook(ipc_permission, 0, ipcp, flag);
1016}
1017
1018void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1019{
1020 *secid = 0;
1021 call_void_hook(ipc_getsecid, ipcp, secid);
1022}
1023
1024int security_msg_msg_alloc(struct msg_msg *msg)
1025{
1026 return call_int_hook(msg_msg_alloc_security, 0, msg);
1027}
1028
1029void security_msg_msg_free(struct msg_msg *msg)
1030{
1031 call_void_hook(msg_msg_free_security, msg);
1032}
1033
1034int security_msg_queue_alloc(struct msg_queue *msq)
1035{
1036 return call_int_hook(msg_queue_alloc_security, 0, msq);
1037}
1038
1039void security_msg_queue_free(struct msg_queue *msq)
1040{
1041 call_void_hook(msg_queue_free_security, msq);
1042}
1043
1044int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
1045{
1046 return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1047}
1048
1049int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1050{
1051 return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1052}
1053
1054int security_msg_queue_msgsnd(struct msg_queue *msq,
1055 struct msg_msg *msg, int msqflg)
1056{
1057 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1058}
1059
1060int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1061 struct task_struct *target, long type, int mode)
1062{
1063 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1064}
1065
1066int security_shm_alloc(struct shmid_kernel *shp)
1067{
1068 return call_int_hook(shm_alloc_security, 0, shp);
1069}
1070
1071void security_shm_free(struct shmid_kernel *shp)
1072{
1073 call_void_hook(shm_free_security, shp);
1074}
1075
1076int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1077{
1078 return call_int_hook(shm_associate, 0, shp, shmflg);
1079}
1080
1081int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1082{
1083 return call_int_hook(shm_shmctl, 0, shp, cmd);
1084}
1085
1086int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1087{
1088 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1089}
1090
1091int security_sem_alloc(struct sem_array *sma)
1092{
1093 return call_int_hook(sem_alloc_security, 0, sma);
1094}
1095
1096void security_sem_free(struct sem_array *sma)
1097{
1098 call_void_hook(sem_free_security, sma);
1099}
1100
1101int security_sem_associate(struct sem_array *sma, int semflg)
1102{
1103 return call_int_hook(sem_associate, 0, sma, semflg);
1104}
1105
1106int security_sem_semctl(struct sem_array *sma, int cmd)
1107{
1108 return call_int_hook(sem_semctl, 0, sma, cmd);
1109}
1110
1111int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1112 unsigned nsops, int alter)
1113{
1114 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1115}
1116
1117void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1118{
1119 if (unlikely(inode && IS_PRIVATE(inode)))
1120 return;
1121 call_void_hook(d_instantiate, dentry, inode);
1122}
1123EXPORT_SYMBOL(security_d_instantiate);
1124
1125int security_getprocattr(struct task_struct *p, char *name, char **value)
1126{
1127 return call_int_hook(getprocattr, -EINVAL, p, name, value);
1128}
1129
1130int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1131{
1132 return call_int_hook(setprocattr, -EINVAL, p, name, value, size);
1133}
1134
1135int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1136{
1137 return call_int_hook(netlink_send, 0, sk, skb);
1138}
1139
1140int security_ismaclabel(const char *name)
1141{
1142 return call_int_hook(ismaclabel, 0, name);
1143}
1144EXPORT_SYMBOL(security_ismaclabel);
1145
1146int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1147{
1148 return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1149 seclen);
1150}
1151EXPORT_SYMBOL(security_secid_to_secctx);
1152
1153int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1154{
1155 *secid = 0;
1156 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1157}
1158EXPORT_SYMBOL(security_secctx_to_secid);
1159
1160void security_release_secctx(char *secdata, u32 seclen)
1161{
1162 call_void_hook(release_secctx, secdata, seclen);
1163}
1164EXPORT_SYMBOL(security_release_secctx);
1165
1166void security_inode_invalidate_secctx(struct inode *inode)
1167{
1168 call_void_hook(inode_invalidate_secctx, inode);
1169}
1170EXPORT_SYMBOL(security_inode_invalidate_secctx);
1171
1172int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1173{
1174 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1175}
1176EXPORT_SYMBOL(security_inode_notifysecctx);
1177
1178int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1179{
1180 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1181}
1182EXPORT_SYMBOL(security_inode_setsecctx);
1183
1184int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1185{
1186 return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1187}
1188EXPORT_SYMBOL(security_inode_getsecctx);
1189
1190#ifdef CONFIG_SECURITY_NETWORK
1191
1192int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1193{
1194 return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1195}
1196EXPORT_SYMBOL(security_unix_stream_connect);
1197
1198int security_unix_may_send(struct socket *sock, struct socket *other)
1199{
1200 return call_int_hook(unix_may_send, 0, sock, other);
1201}
1202EXPORT_SYMBOL(security_unix_may_send);
1203
1204int security_socket_create(int family, int type, int protocol, int kern)
1205{
1206 return call_int_hook(socket_create, 0, family, type, protocol, kern);
1207}
1208
1209int security_socket_post_create(struct socket *sock, int family,
1210 int type, int protocol, int kern)
1211{
1212 return call_int_hook(socket_post_create, 0, sock, family, type,
1213 protocol, kern);
1214}
1215
1216int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1217{
1218 return call_int_hook(socket_bind, 0, sock, address, addrlen);
1219}
1220
1221int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1222{
1223 return call_int_hook(socket_connect, 0, sock, address, addrlen);
1224}
1225
1226int security_socket_listen(struct socket *sock, int backlog)
1227{
1228 return call_int_hook(socket_listen, 0, sock, backlog);
1229}
1230
1231int security_socket_accept(struct socket *sock, struct socket *newsock)
1232{
1233 return call_int_hook(socket_accept, 0, sock, newsock);
1234}
1235
1236int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1237{
1238 return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1239}
1240
1241int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1242 int size, int flags)
1243{
1244 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1245}
1246
1247int security_socket_getsockname(struct socket *sock)
1248{
1249 return call_int_hook(socket_getsockname, 0, sock);
1250}
1251
1252int security_socket_getpeername(struct socket *sock)
1253{
1254 return call_int_hook(socket_getpeername, 0, sock);
1255}
1256
1257int security_socket_getsockopt(struct socket *sock, int level, int optname)
1258{
1259 return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1260}
1261
1262int security_socket_setsockopt(struct socket *sock, int level, int optname)
1263{
1264 return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1265}
1266
1267int security_socket_shutdown(struct socket *sock, int how)
1268{
1269 return call_int_hook(socket_shutdown, 0, sock, how);
1270}
1271
1272int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1273{
1274 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1275}
1276EXPORT_SYMBOL(security_sock_rcv_skb);
1277
1278int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1279 int __user *optlen, unsigned len)
1280{
1281 return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1282 optval, optlen, len);
1283}
1284
1285int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1286{
1287 return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1288 skb, secid);
1289}
1290EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1291
1292int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1293{
1294 return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1295}
1296
1297void security_sk_free(struct sock *sk)
1298{
1299 call_void_hook(sk_free_security, sk);
1300}
1301
1302void security_sk_clone(const struct sock *sk, struct sock *newsk)
1303{
1304 call_void_hook(sk_clone_security, sk, newsk);
1305}
1306EXPORT_SYMBOL(security_sk_clone);
1307
1308void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1309{
1310 call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1311}
1312EXPORT_SYMBOL(security_sk_classify_flow);
1313
1314void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1315{
1316 call_void_hook(req_classify_flow, req, fl);
1317}
1318EXPORT_SYMBOL(security_req_classify_flow);
1319
1320void security_sock_graft(struct sock *sk, struct socket *parent)
1321{
1322 call_void_hook(sock_graft, sk, parent);
1323}
1324EXPORT_SYMBOL(security_sock_graft);
1325
1326int security_inet_conn_request(struct sock *sk,
1327 struct sk_buff *skb, struct request_sock *req)
1328{
1329 return call_int_hook(inet_conn_request, 0, sk, skb, req);
1330}
1331EXPORT_SYMBOL(security_inet_conn_request);
1332
1333void security_inet_csk_clone(struct sock *newsk,
1334 const struct request_sock *req)
1335{
1336 call_void_hook(inet_csk_clone, newsk, req);
1337}
1338
1339void security_inet_conn_established(struct sock *sk,
1340 struct sk_buff *skb)
1341{
1342 call_void_hook(inet_conn_established, sk, skb);
1343}
1344
1345int security_secmark_relabel_packet(u32 secid)
1346{
1347 return call_int_hook(secmark_relabel_packet, 0, secid);
1348}
1349EXPORT_SYMBOL(security_secmark_relabel_packet);
1350
1351void security_secmark_refcount_inc(void)
1352{
1353 call_void_hook(secmark_refcount_inc);
1354}
1355EXPORT_SYMBOL(security_secmark_refcount_inc);
1356
1357void security_secmark_refcount_dec(void)
1358{
1359 call_void_hook(secmark_refcount_dec);
1360}
1361EXPORT_SYMBOL(security_secmark_refcount_dec);
1362
1363int security_tun_dev_alloc_security(void **security)
1364{
1365 return call_int_hook(tun_dev_alloc_security, 0, security);
1366}
1367EXPORT_SYMBOL(security_tun_dev_alloc_security);
1368
1369void security_tun_dev_free_security(void *security)
1370{
1371 call_void_hook(tun_dev_free_security, security);
1372}
1373EXPORT_SYMBOL(security_tun_dev_free_security);
1374
1375int security_tun_dev_create(void)
1376{
1377 return call_int_hook(tun_dev_create, 0);
1378}
1379EXPORT_SYMBOL(security_tun_dev_create);
1380
1381int security_tun_dev_attach_queue(void *security)
1382{
1383 return call_int_hook(tun_dev_attach_queue, 0, security);
1384}
1385EXPORT_SYMBOL(security_tun_dev_attach_queue);
1386
1387int security_tun_dev_attach(struct sock *sk, void *security)
1388{
1389 return call_int_hook(tun_dev_attach, 0, sk, security);
1390}
1391EXPORT_SYMBOL(security_tun_dev_attach);
1392
1393int security_tun_dev_open(void *security)
1394{
1395 return call_int_hook(tun_dev_open, 0, security);
1396}
1397EXPORT_SYMBOL(security_tun_dev_open);
1398
1399#endif /* CONFIG_SECURITY_NETWORK */
1400
1401#ifdef CONFIG_SECURITY_NETWORK_XFRM
1402
1403int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1404 struct xfrm_user_sec_ctx *sec_ctx,
1405 gfp_t gfp)
1406{
1407 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1408}
1409EXPORT_SYMBOL(security_xfrm_policy_alloc);
1410
1411int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1412 struct xfrm_sec_ctx **new_ctxp)
1413{
1414 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1415}
1416
1417void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1418{
1419 call_void_hook(xfrm_policy_free_security, ctx);
1420}
1421EXPORT_SYMBOL(security_xfrm_policy_free);
1422
1423int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1424{
1425 return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1426}
1427
1428int security_xfrm_state_alloc(struct xfrm_state *x,
1429 struct xfrm_user_sec_ctx *sec_ctx)
1430{
1431 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1432}
1433EXPORT_SYMBOL(security_xfrm_state_alloc);
1434
1435int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1436 struct xfrm_sec_ctx *polsec, u32 secid)
1437{
1438 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1439}
1440
1441int security_xfrm_state_delete(struct xfrm_state *x)
1442{
1443 return call_int_hook(xfrm_state_delete_security, 0, x);
1444}
1445EXPORT_SYMBOL(security_xfrm_state_delete);
1446
1447void security_xfrm_state_free(struct xfrm_state *x)
1448{
1449 call_void_hook(xfrm_state_free_security, x);
1450}
1451
1452int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1453{
1454 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1455}
1456
1457int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1458 struct xfrm_policy *xp,
1459 const struct flowi *fl)
1460{
1461 struct security_hook_list *hp;
1462 int rc = 1;
1463
1464 /*
1465 * Since this function is expected to return 0 or 1, the judgment
1466 * becomes difficult if multiple LSMs supply this call. Fortunately,
1467 * we can use the first LSM's judgment because currently only SELinux
1468 * supplies this call.
1469 *
1470 * For speed optimization, we explicitly break the loop rather than
1471 * using the macro
1472 */
1473 list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1474 list) {
1475 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1476 break;
1477 }
1478 return rc;
1479}
1480
1481int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1482{
1483 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1484}
1485
1486void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1487{
1488 int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1489 0);
1490
1491 BUG_ON(rc);
1492}
1493EXPORT_SYMBOL(security_skb_classify_flow);
1494
1495#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1496
1497#ifdef CONFIG_KEYS
1498
1499int security_key_alloc(struct key *key, const struct cred *cred,
1500 unsigned long flags)
1501{
1502 return call_int_hook(key_alloc, 0, key, cred, flags);
1503}
1504
1505void security_key_free(struct key *key)
1506{
1507 call_void_hook(key_free, key);
1508}
1509
1510int security_key_permission(key_ref_t key_ref,
1511 const struct cred *cred, unsigned perm)
1512{
1513 return call_int_hook(key_permission, 0, key_ref, cred, perm);
1514}
1515
1516int security_key_getsecurity(struct key *key, char **_buffer)
1517{
1518 *_buffer = NULL;
1519 return call_int_hook(key_getsecurity, 0, key, _buffer);
1520}
1521
1522#endif /* CONFIG_KEYS */
1523
1524#ifdef CONFIG_AUDIT
1525
1526int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1527{
1528 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1529}
1530
1531int security_audit_rule_known(struct audit_krule *krule)
1532{
1533 return call_int_hook(audit_rule_known, 0, krule);
1534}
1535
1536void security_audit_rule_free(void *lsmrule)
1537{
1538 call_void_hook(audit_rule_free, lsmrule);
1539}
1540
1541int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1542 struct audit_context *actx)
1543{
1544 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1545 actx);
1546}
1547#endif /* CONFIG_AUDIT */
1548
1549struct security_hook_heads security_hook_heads = {
1550 .binder_set_context_mgr =
1551 LIST_HEAD_INIT(security_hook_heads.binder_set_context_mgr),
1552 .binder_transaction =
1553 LIST_HEAD_INIT(security_hook_heads.binder_transaction),
1554 .binder_transfer_binder =
1555 LIST_HEAD_INIT(security_hook_heads.binder_transfer_binder),
1556 .binder_transfer_file =
1557 LIST_HEAD_INIT(security_hook_heads.binder_transfer_file),
1558
1559 .ptrace_access_check =
1560 LIST_HEAD_INIT(security_hook_heads.ptrace_access_check),
1561 .ptrace_traceme =
1562 LIST_HEAD_INIT(security_hook_heads.ptrace_traceme),
1563 .capget = LIST_HEAD_INIT(security_hook_heads.capget),
1564 .capset = LIST_HEAD_INIT(security_hook_heads.capset),
1565 .capable = LIST_HEAD_INIT(security_hook_heads.capable),
1566 .quotactl = LIST_HEAD_INIT(security_hook_heads.quotactl),
1567 .quota_on = LIST_HEAD_INIT(security_hook_heads.quota_on),
1568 .syslog = LIST_HEAD_INIT(security_hook_heads.syslog),
1569 .settime = LIST_HEAD_INIT(security_hook_heads.settime),
1570 .vm_enough_memory =
1571 LIST_HEAD_INIT(security_hook_heads.vm_enough_memory),
1572 .bprm_set_creds =
1573 LIST_HEAD_INIT(security_hook_heads.bprm_set_creds),
1574 .bprm_check_security =
1575 LIST_HEAD_INIT(security_hook_heads.bprm_check_security),
1576 .bprm_secureexec =
1577 LIST_HEAD_INIT(security_hook_heads.bprm_secureexec),
1578 .bprm_committing_creds =
1579 LIST_HEAD_INIT(security_hook_heads.bprm_committing_creds),
1580 .bprm_committed_creds =
1581 LIST_HEAD_INIT(security_hook_heads.bprm_committed_creds),
1582 .sb_alloc_security =
1583 LIST_HEAD_INIT(security_hook_heads.sb_alloc_security),
1584 .sb_free_security =
1585 LIST_HEAD_INIT(security_hook_heads.sb_free_security),
1586 .sb_copy_data = LIST_HEAD_INIT(security_hook_heads.sb_copy_data),
1587 .sb_remount = LIST_HEAD_INIT(security_hook_heads.sb_remount),
1588 .sb_kern_mount =
1589 LIST_HEAD_INIT(security_hook_heads.sb_kern_mount),
1590 .sb_show_options =
1591 LIST_HEAD_INIT(security_hook_heads.sb_show_options),
1592 .sb_statfs = LIST_HEAD_INIT(security_hook_heads.sb_statfs),
1593 .sb_mount = LIST_HEAD_INIT(security_hook_heads.sb_mount),
1594 .sb_umount = LIST_HEAD_INIT(security_hook_heads.sb_umount),
1595 .sb_pivotroot = LIST_HEAD_INIT(security_hook_heads.sb_pivotroot),
1596 .sb_set_mnt_opts =
1597 LIST_HEAD_INIT(security_hook_heads.sb_set_mnt_opts),
1598 .sb_clone_mnt_opts =
1599 LIST_HEAD_INIT(security_hook_heads.sb_clone_mnt_opts),
1600 .sb_parse_opts_str =
1601 LIST_HEAD_INIT(security_hook_heads.sb_parse_opts_str),
1602 .dentry_init_security =
1603 LIST_HEAD_INIT(security_hook_heads.dentry_init_security),
1604#ifdef CONFIG_SECURITY_PATH
1605 .path_unlink = LIST_HEAD_INIT(security_hook_heads.path_unlink),
1606 .path_mkdir = LIST_HEAD_INIT(security_hook_heads.path_mkdir),
1607 .path_rmdir = LIST_HEAD_INIT(security_hook_heads.path_rmdir),
1608 .path_mknod = LIST_HEAD_INIT(security_hook_heads.path_mknod),
1609 .path_truncate =
1610 LIST_HEAD_INIT(security_hook_heads.path_truncate),
1611 .path_symlink = LIST_HEAD_INIT(security_hook_heads.path_symlink),
1612 .path_link = LIST_HEAD_INIT(security_hook_heads.path_link),
1613 .path_rename = LIST_HEAD_INIT(security_hook_heads.path_rename),
1614 .path_chmod = LIST_HEAD_INIT(security_hook_heads.path_chmod),
1615 .path_chown = LIST_HEAD_INIT(security_hook_heads.path_chown),
1616 .path_chroot = LIST_HEAD_INIT(security_hook_heads.path_chroot),
1617#endif
1618 .inode_alloc_security =
1619 LIST_HEAD_INIT(security_hook_heads.inode_alloc_security),
1620 .inode_free_security =
1621 LIST_HEAD_INIT(security_hook_heads.inode_free_security),
1622 .inode_init_security =
1623 LIST_HEAD_INIT(security_hook_heads.inode_init_security),
1624 .inode_create = LIST_HEAD_INIT(security_hook_heads.inode_create),
1625 .inode_link = LIST_HEAD_INIT(security_hook_heads.inode_link),
1626 .inode_unlink = LIST_HEAD_INIT(security_hook_heads.inode_unlink),
1627 .inode_symlink =
1628 LIST_HEAD_INIT(security_hook_heads.inode_symlink),
1629 .inode_mkdir = LIST_HEAD_INIT(security_hook_heads.inode_mkdir),
1630 .inode_rmdir = LIST_HEAD_INIT(security_hook_heads.inode_rmdir),
1631 .inode_mknod = LIST_HEAD_INIT(security_hook_heads.inode_mknod),
1632 .inode_rename = LIST_HEAD_INIT(security_hook_heads.inode_rename),
1633 .inode_readlink =
1634 LIST_HEAD_INIT(security_hook_heads.inode_readlink),
1635 .inode_follow_link =
1636 LIST_HEAD_INIT(security_hook_heads.inode_follow_link),
1637 .inode_permission =
1638 LIST_HEAD_INIT(security_hook_heads.inode_permission),
1639 .inode_setattr =
1640 LIST_HEAD_INIT(security_hook_heads.inode_setattr),
1641 .inode_getattr =
1642 LIST_HEAD_INIT(security_hook_heads.inode_getattr),
1643 .inode_setxattr =
1644 LIST_HEAD_INIT(security_hook_heads.inode_setxattr),
1645 .inode_post_setxattr =
1646 LIST_HEAD_INIT(security_hook_heads.inode_post_setxattr),
1647 .inode_getxattr =
1648 LIST_HEAD_INIT(security_hook_heads.inode_getxattr),
1649 .inode_listxattr =
1650 LIST_HEAD_INIT(security_hook_heads.inode_listxattr),
1651 .inode_removexattr =
1652 LIST_HEAD_INIT(security_hook_heads.inode_removexattr),
1653 .inode_need_killpriv =
1654 LIST_HEAD_INIT(security_hook_heads.inode_need_killpriv),
1655 .inode_killpriv =
1656 LIST_HEAD_INIT(security_hook_heads.inode_killpriv),
1657 .inode_getsecurity =
1658 LIST_HEAD_INIT(security_hook_heads.inode_getsecurity),
1659 .inode_setsecurity =
1660 LIST_HEAD_INIT(security_hook_heads.inode_setsecurity),
1661 .inode_listsecurity =
1662 LIST_HEAD_INIT(security_hook_heads.inode_listsecurity),
1663 .inode_getsecid =
1664 LIST_HEAD_INIT(security_hook_heads.inode_getsecid),
1665 .file_permission =
1666 LIST_HEAD_INIT(security_hook_heads.file_permission),
1667 .file_alloc_security =
1668 LIST_HEAD_INIT(security_hook_heads.file_alloc_security),
1669 .file_free_security =
1670 LIST_HEAD_INIT(security_hook_heads.file_free_security),
1671 .file_ioctl = LIST_HEAD_INIT(security_hook_heads.file_ioctl),
1672 .mmap_addr = LIST_HEAD_INIT(security_hook_heads.mmap_addr),
1673 .mmap_file = LIST_HEAD_INIT(security_hook_heads.mmap_file),
1674 .file_mprotect =
1675 LIST_HEAD_INIT(security_hook_heads.file_mprotect),
1676 .file_lock = LIST_HEAD_INIT(security_hook_heads.file_lock),
1677 .file_fcntl = LIST_HEAD_INIT(security_hook_heads.file_fcntl),
1678 .file_set_fowner =
1679 LIST_HEAD_INIT(security_hook_heads.file_set_fowner),
1680 .file_send_sigiotask =
1681 LIST_HEAD_INIT(security_hook_heads.file_send_sigiotask),
1682 .file_receive = LIST_HEAD_INIT(security_hook_heads.file_receive),
1683 .file_open = LIST_HEAD_INIT(security_hook_heads.file_open),
1684 .task_create = LIST_HEAD_INIT(security_hook_heads.task_create),
1685 .task_free = LIST_HEAD_INIT(security_hook_heads.task_free),
1686 .cred_alloc_blank =
1687 LIST_HEAD_INIT(security_hook_heads.cred_alloc_blank),
1688 .cred_free = LIST_HEAD_INIT(security_hook_heads.cred_free),
1689 .cred_prepare = LIST_HEAD_INIT(security_hook_heads.cred_prepare),
1690 .cred_transfer =
1691 LIST_HEAD_INIT(security_hook_heads.cred_transfer),
1692 .kernel_act_as =
1693 LIST_HEAD_INIT(security_hook_heads.kernel_act_as),
1694 .kernel_create_files_as =
1695 LIST_HEAD_INIT(security_hook_heads.kernel_create_files_as),
1696 .kernel_module_request =
1697 LIST_HEAD_INIT(security_hook_heads.kernel_module_request),
1698 .kernel_read_file =
1699 LIST_HEAD_INIT(security_hook_heads.kernel_read_file),
1700 .kernel_post_read_file =
1701 LIST_HEAD_INIT(security_hook_heads.kernel_post_read_file),
1702 .task_fix_setuid =
1703 LIST_HEAD_INIT(security_hook_heads.task_fix_setuid),
1704 .task_setpgid = LIST_HEAD_INIT(security_hook_heads.task_setpgid),
1705 .task_getpgid = LIST_HEAD_INIT(security_hook_heads.task_getpgid),
1706 .task_getsid = LIST_HEAD_INIT(security_hook_heads.task_getsid),
1707 .task_getsecid =
1708 LIST_HEAD_INIT(security_hook_heads.task_getsecid),
1709 .task_setnice = LIST_HEAD_INIT(security_hook_heads.task_setnice),
1710 .task_setioprio =
1711 LIST_HEAD_INIT(security_hook_heads.task_setioprio),
1712 .task_getioprio =
1713 LIST_HEAD_INIT(security_hook_heads.task_getioprio),
1714 .task_setrlimit =
1715 LIST_HEAD_INIT(security_hook_heads.task_setrlimit),
1716 .task_setscheduler =
1717 LIST_HEAD_INIT(security_hook_heads.task_setscheduler),
1718 .task_getscheduler =
1719 LIST_HEAD_INIT(security_hook_heads.task_getscheduler),
1720 .task_movememory =
1721 LIST_HEAD_INIT(security_hook_heads.task_movememory),
1722 .task_kill = LIST_HEAD_INIT(security_hook_heads.task_kill),
1723 .task_wait = LIST_HEAD_INIT(security_hook_heads.task_wait),
1724 .task_prctl = LIST_HEAD_INIT(security_hook_heads.task_prctl),
1725 .task_to_inode =
1726 LIST_HEAD_INIT(security_hook_heads.task_to_inode),
1727 .ipc_permission =
1728 LIST_HEAD_INIT(security_hook_heads.ipc_permission),
1729 .ipc_getsecid = LIST_HEAD_INIT(security_hook_heads.ipc_getsecid),
1730 .msg_msg_alloc_security =
1731 LIST_HEAD_INIT(security_hook_heads.msg_msg_alloc_security),
1732 .msg_msg_free_security =
1733 LIST_HEAD_INIT(security_hook_heads.msg_msg_free_security),
1734 .msg_queue_alloc_security =
1735 LIST_HEAD_INIT(security_hook_heads.msg_queue_alloc_security),
1736 .msg_queue_free_security =
1737 LIST_HEAD_INIT(security_hook_heads.msg_queue_free_security),
1738 .msg_queue_associate =
1739 LIST_HEAD_INIT(security_hook_heads.msg_queue_associate),
1740 .msg_queue_msgctl =
1741 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgctl),
1742 .msg_queue_msgsnd =
1743 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgsnd),
1744 .msg_queue_msgrcv =
1745 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgrcv),
1746 .shm_alloc_security =
1747 LIST_HEAD_INIT(security_hook_heads.shm_alloc_security),
1748 .shm_free_security =
1749 LIST_HEAD_INIT(security_hook_heads.shm_free_security),
1750 .shm_associate =
1751 LIST_HEAD_INIT(security_hook_heads.shm_associate),
1752 .shm_shmctl = LIST_HEAD_INIT(security_hook_heads.shm_shmctl),
1753 .shm_shmat = LIST_HEAD_INIT(security_hook_heads.shm_shmat),
1754 .sem_alloc_security =
1755 LIST_HEAD_INIT(security_hook_heads.sem_alloc_security),
1756 .sem_free_security =
1757 LIST_HEAD_INIT(security_hook_heads.sem_free_security),
1758 .sem_associate =
1759 LIST_HEAD_INIT(security_hook_heads.sem_associate),
1760 .sem_semctl = LIST_HEAD_INIT(security_hook_heads.sem_semctl),
1761 .sem_semop = LIST_HEAD_INIT(security_hook_heads.sem_semop),
1762 .netlink_send = LIST_HEAD_INIT(security_hook_heads.netlink_send),
1763 .d_instantiate =
1764 LIST_HEAD_INIT(security_hook_heads.d_instantiate),
1765 .getprocattr = LIST_HEAD_INIT(security_hook_heads.getprocattr),
1766 .setprocattr = LIST_HEAD_INIT(security_hook_heads.setprocattr),
1767 .ismaclabel = LIST_HEAD_INIT(security_hook_heads.ismaclabel),
1768 .secid_to_secctx =
1769 LIST_HEAD_INIT(security_hook_heads.secid_to_secctx),
1770 .secctx_to_secid =
1771 LIST_HEAD_INIT(security_hook_heads.secctx_to_secid),
1772 .release_secctx =
1773 LIST_HEAD_INIT(security_hook_heads.release_secctx),
1774 .inode_invalidate_secctx =
1775 LIST_HEAD_INIT(security_hook_heads.inode_invalidate_secctx),
1776 .inode_notifysecctx =
1777 LIST_HEAD_INIT(security_hook_heads.inode_notifysecctx),
1778 .inode_setsecctx =
1779 LIST_HEAD_INIT(security_hook_heads.inode_setsecctx),
1780 .inode_getsecctx =
1781 LIST_HEAD_INIT(security_hook_heads.inode_getsecctx),
1782#ifdef CONFIG_SECURITY_NETWORK
1783 .unix_stream_connect =
1784 LIST_HEAD_INIT(security_hook_heads.unix_stream_connect),
1785 .unix_may_send =
1786 LIST_HEAD_INIT(security_hook_heads.unix_may_send),
1787 .socket_create =
1788 LIST_HEAD_INIT(security_hook_heads.socket_create),
1789 .socket_post_create =
1790 LIST_HEAD_INIT(security_hook_heads.socket_post_create),
1791 .socket_bind = LIST_HEAD_INIT(security_hook_heads.socket_bind),
1792 .socket_connect =
1793 LIST_HEAD_INIT(security_hook_heads.socket_connect),
1794 .socket_listen =
1795 LIST_HEAD_INIT(security_hook_heads.socket_listen),
1796 .socket_accept =
1797 LIST_HEAD_INIT(security_hook_heads.socket_accept),
1798 .socket_sendmsg =
1799 LIST_HEAD_INIT(security_hook_heads.socket_sendmsg),
1800 .socket_recvmsg =
1801 LIST_HEAD_INIT(security_hook_heads.socket_recvmsg),
1802 .socket_getsockname =
1803 LIST_HEAD_INIT(security_hook_heads.socket_getsockname),
1804 .socket_getpeername =
1805 LIST_HEAD_INIT(security_hook_heads.socket_getpeername),
1806 .socket_getsockopt =
1807 LIST_HEAD_INIT(security_hook_heads.socket_getsockopt),
1808 .socket_setsockopt =
1809 LIST_HEAD_INIT(security_hook_heads.socket_setsockopt),
1810 .socket_shutdown =
1811 LIST_HEAD_INIT(security_hook_heads.socket_shutdown),
1812 .socket_sock_rcv_skb =
1813 LIST_HEAD_INIT(security_hook_heads.socket_sock_rcv_skb),
1814 .socket_getpeersec_stream =
1815 LIST_HEAD_INIT(security_hook_heads.socket_getpeersec_stream),
1816 .socket_getpeersec_dgram =
1817 LIST_HEAD_INIT(security_hook_heads.socket_getpeersec_dgram),
1818 .sk_alloc_security =
1819 LIST_HEAD_INIT(security_hook_heads.sk_alloc_security),
1820 .sk_free_security =
1821 LIST_HEAD_INIT(security_hook_heads.sk_free_security),
1822 .sk_clone_security =
1823 LIST_HEAD_INIT(security_hook_heads.sk_clone_security),
1824 .sk_getsecid = LIST_HEAD_INIT(security_hook_heads.sk_getsecid),
1825 .sock_graft = LIST_HEAD_INIT(security_hook_heads.sock_graft),
1826 .inet_conn_request =
1827 LIST_HEAD_INIT(security_hook_heads.inet_conn_request),
1828 .inet_csk_clone =
1829 LIST_HEAD_INIT(security_hook_heads.inet_csk_clone),
1830 .inet_conn_established =
1831 LIST_HEAD_INIT(security_hook_heads.inet_conn_established),
1832 .secmark_relabel_packet =
1833 LIST_HEAD_INIT(security_hook_heads.secmark_relabel_packet),
1834 .secmark_refcount_inc =
1835 LIST_HEAD_INIT(security_hook_heads.secmark_refcount_inc),
1836 .secmark_refcount_dec =
1837 LIST_HEAD_INIT(security_hook_heads.secmark_refcount_dec),
1838 .req_classify_flow =
1839 LIST_HEAD_INIT(security_hook_heads.req_classify_flow),
1840 .tun_dev_alloc_security =
1841 LIST_HEAD_INIT(security_hook_heads.tun_dev_alloc_security),
1842 .tun_dev_free_security =
1843 LIST_HEAD_INIT(security_hook_heads.tun_dev_free_security),
1844 .tun_dev_create =
1845 LIST_HEAD_INIT(security_hook_heads.tun_dev_create),
1846 .tun_dev_attach_queue =
1847 LIST_HEAD_INIT(security_hook_heads.tun_dev_attach_queue),
1848 .tun_dev_attach =
1849 LIST_HEAD_INIT(security_hook_heads.tun_dev_attach),
1850 .tun_dev_open = LIST_HEAD_INIT(security_hook_heads.tun_dev_open),
1851 .skb_owned_by = LIST_HEAD_INIT(security_hook_heads.skb_owned_by),
1852#endif /* CONFIG_SECURITY_NETWORK */
1853#ifdef CONFIG_SECURITY_NETWORK_XFRM
1854 .xfrm_policy_alloc_security =
1855 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_alloc_security),
1856 .xfrm_policy_clone_security =
1857 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_clone_security),
1858 .xfrm_policy_free_security =
1859 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_free_security),
1860 .xfrm_policy_delete_security =
1861 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_delete_security),
1862 .xfrm_state_alloc =
1863 LIST_HEAD_INIT(security_hook_heads.xfrm_state_alloc),
1864 .xfrm_state_alloc_acquire =
1865 LIST_HEAD_INIT(security_hook_heads.xfrm_state_alloc_acquire),
1866 .xfrm_state_free_security =
1867 LIST_HEAD_INIT(security_hook_heads.xfrm_state_free_security),
1868 .xfrm_state_delete_security =
1869 LIST_HEAD_INIT(security_hook_heads.xfrm_state_delete_security),
1870 .xfrm_policy_lookup =
1871 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_lookup),
1872 .xfrm_state_pol_flow_match =
1873 LIST_HEAD_INIT(security_hook_heads.xfrm_state_pol_flow_match),
1874 .xfrm_decode_session =
1875 LIST_HEAD_INIT(security_hook_heads.xfrm_decode_session),
1876#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1877#ifdef CONFIG_KEYS
1878 .key_alloc = LIST_HEAD_INIT(security_hook_heads.key_alloc),
1879 .key_free = LIST_HEAD_INIT(security_hook_heads.key_free),
1880 .key_permission =
1881 LIST_HEAD_INIT(security_hook_heads.key_permission),
1882 .key_getsecurity =
1883 LIST_HEAD_INIT(security_hook_heads.key_getsecurity),
1884#endif /* CONFIG_KEYS */
1885#ifdef CONFIG_AUDIT
1886 .audit_rule_init =
1887 LIST_HEAD_INIT(security_hook_heads.audit_rule_init),
1888 .audit_rule_known =
1889 LIST_HEAD_INIT(security_hook_heads.audit_rule_known),
1890 .audit_rule_match =
1891 LIST_HEAD_INIT(security_hook_heads.audit_rule_match),
1892 .audit_rule_free =
1893 LIST_HEAD_INIT(security_hook_heads.audit_rule_free),
1894#endif /* CONFIG_AUDIT */
1895};
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/module.h>
16#include <linux/init.h>
17#include <linux/kernel.h>
18#include <linux/security.h>
19#include <linux/integrity.h>
20#include <linux/ima.h>
21#include <linux/evm.h>
22#include <linux/fsnotify.h>
23#include <linux/mman.h>
24#include <linux/mount.h>
25#include <linux/personality.h>
26#include <linux/backing-dev.h>
27#include <net/flow.h>
28
29#define MAX_LSM_EVM_XATTR 2
30
31/* Boot-time LSM user choice */
32static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
33 CONFIG_DEFAULT_SECURITY;
34
35static struct security_operations *security_ops;
36static struct security_operations default_security_ops = {
37 .name = "default",
38};
39
40static inline int __init verify(struct security_operations *ops)
41{
42 /* verify the security_operations structure exists */
43 if (!ops)
44 return -EINVAL;
45 security_fixup_ops(ops);
46 return 0;
47}
48
49static void __init do_security_initcalls(void)
50{
51 initcall_t *call;
52 call = __security_initcall_start;
53 while (call < __security_initcall_end) {
54 (*call) ();
55 call++;
56 }
57}
58
59/**
60 * security_init - initializes the security framework
61 *
62 * This should be called early in the kernel initialization sequence.
63 */
64int __init security_init(void)
65{
66 printk(KERN_INFO "Security Framework initialized\n");
67
68 security_fixup_ops(&default_security_ops);
69 security_ops = &default_security_ops;
70 do_security_initcalls();
71
72 return 0;
73}
74
75void reset_security_ops(void)
76{
77 security_ops = &default_security_ops;
78}
79
80/* Save user chosen LSM */
81static int __init choose_lsm(char *str)
82{
83 strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
84 return 1;
85}
86__setup("security=", choose_lsm);
87
88/**
89 * security_module_enable - Load given security module on boot ?
90 * @ops: a pointer to the struct security_operations that is to be checked.
91 *
92 * Each LSM must pass this method before registering its own operations
93 * to avoid security registration races. This method may also be used
94 * to check if your LSM is currently loaded during kernel initialization.
95 *
96 * Return true if:
97 * -The passed LSM is the one chosen by user at boot time,
98 * -or the passed LSM is configured as the default and the user did not
99 * choose an alternate LSM at boot time.
100 * Otherwise, return false.
101 */
102int __init security_module_enable(struct security_operations *ops)
103{
104 return !strcmp(ops->name, chosen_lsm);
105}
106
107/**
108 * register_security - registers a security framework with the kernel
109 * @ops: a pointer to the struct security_options that is to be registered
110 *
111 * This function allows a security module to register itself with the
112 * kernel security subsystem. Some rudimentary checking is done on the @ops
113 * value passed to this function. You'll need to check first if your LSM
114 * is allowed to register its @ops by calling security_module_enable(@ops).
115 *
116 * If there is already a security module registered with the kernel,
117 * an error will be returned. Otherwise %0 is returned on success.
118 */
119int __init register_security(struct security_operations *ops)
120{
121 if (verify(ops)) {
122 printk(KERN_DEBUG "%s could not verify "
123 "security_operations structure.\n", __func__);
124 return -EINVAL;
125 }
126
127 if (security_ops != &default_security_ops)
128 return -EAGAIN;
129
130 security_ops = ops;
131
132 return 0;
133}
134
135/* Security operations */
136
137int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
138{
139 return security_ops->ptrace_access_check(child, mode);
140}
141
142int security_ptrace_traceme(struct task_struct *parent)
143{
144 return security_ops->ptrace_traceme(parent);
145}
146
147int security_capget(struct task_struct *target,
148 kernel_cap_t *effective,
149 kernel_cap_t *inheritable,
150 kernel_cap_t *permitted)
151{
152 return security_ops->capget(target, effective, inheritable, permitted);
153}
154
155int security_capset(struct cred *new, const struct cred *old,
156 const kernel_cap_t *effective,
157 const kernel_cap_t *inheritable,
158 const kernel_cap_t *permitted)
159{
160 return security_ops->capset(new, old,
161 effective, inheritable, permitted);
162}
163
164int security_capable(const struct cred *cred, struct user_namespace *ns,
165 int cap)
166{
167 return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT);
168}
169
170int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
171 int cap)
172{
173 return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
174}
175
176int security_quotactl(int cmds, int type, int id, struct super_block *sb)
177{
178 return security_ops->quotactl(cmds, type, id, sb);
179}
180
181int security_quota_on(struct dentry *dentry)
182{
183 return security_ops->quota_on(dentry);
184}
185
186int security_syslog(int type)
187{
188 return security_ops->syslog(type);
189}
190
191int security_settime(const struct timespec *ts, const struct timezone *tz)
192{
193 return security_ops->settime(ts, tz);
194}
195
196int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
197{
198 return security_ops->vm_enough_memory(mm, pages);
199}
200
201int security_bprm_set_creds(struct linux_binprm *bprm)
202{
203 return security_ops->bprm_set_creds(bprm);
204}
205
206int security_bprm_check(struct linux_binprm *bprm)
207{
208 int ret;
209
210 ret = security_ops->bprm_check_security(bprm);
211 if (ret)
212 return ret;
213 return ima_bprm_check(bprm);
214}
215
216void security_bprm_committing_creds(struct linux_binprm *bprm)
217{
218 security_ops->bprm_committing_creds(bprm);
219}
220
221void security_bprm_committed_creds(struct linux_binprm *bprm)
222{
223 security_ops->bprm_committed_creds(bprm);
224}
225
226int security_bprm_secureexec(struct linux_binprm *bprm)
227{
228 return security_ops->bprm_secureexec(bprm);
229}
230
231int security_sb_alloc(struct super_block *sb)
232{
233 return security_ops->sb_alloc_security(sb);
234}
235
236void security_sb_free(struct super_block *sb)
237{
238 security_ops->sb_free_security(sb);
239}
240
241int security_sb_copy_data(char *orig, char *copy)
242{
243 return security_ops->sb_copy_data(orig, copy);
244}
245EXPORT_SYMBOL(security_sb_copy_data);
246
247int security_sb_remount(struct super_block *sb, void *data)
248{
249 return security_ops->sb_remount(sb, data);
250}
251
252int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
253{
254 return security_ops->sb_kern_mount(sb, flags, data);
255}
256
257int security_sb_show_options(struct seq_file *m, struct super_block *sb)
258{
259 return security_ops->sb_show_options(m, sb);
260}
261
262int security_sb_statfs(struct dentry *dentry)
263{
264 return security_ops->sb_statfs(dentry);
265}
266
267int security_sb_mount(char *dev_name, struct path *path,
268 char *type, unsigned long flags, void *data)
269{
270 return security_ops->sb_mount(dev_name, path, type, flags, data);
271}
272
273int security_sb_umount(struct vfsmount *mnt, int flags)
274{
275 return security_ops->sb_umount(mnt, flags);
276}
277
278int security_sb_pivotroot(struct path *old_path, struct path *new_path)
279{
280 return security_ops->sb_pivotroot(old_path, new_path);
281}
282
283int security_sb_set_mnt_opts(struct super_block *sb,
284 struct security_mnt_opts *opts)
285{
286 return security_ops->sb_set_mnt_opts(sb, opts);
287}
288EXPORT_SYMBOL(security_sb_set_mnt_opts);
289
290void security_sb_clone_mnt_opts(const struct super_block *oldsb,
291 struct super_block *newsb)
292{
293 security_ops->sb_clone_mnt_opts(oldsb, newsb);
294}
295EXPORT_SYMBOL(security_sb_clone_mnt_opts);
296
297int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
298{
299 return security_ops->sb_parse_opts_str(options, opts);
300}
301EXPORT_SYMBOL(security_sb_parse_opts_str);
302
303int security_inode_alloc(struct inode *inode)
304{
305 inode->i_security = NULL;
306 return security_ops->inode_alloc_security(inode);
307}
308
309void security_inode_free(struct inode *inode)
310{
311 integrity_inode_free(inode);
312 security_ops->inode_free_security(inode);
313}
314
315int security_inode_init_security(struct inode *inode, struct inode *dir,
316 const struct qstr *qstr,
317 const initxattrs initxattrs, void *fs_data)
318{
319 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
320 struct xattr *lsm_xattr, *evm_xattr, *xattr;
321 int ret;
322
323 if (unlikely(IS_PRIVATE(inode)))
324 return 0;
325
326 memset(new_xattrs, 0, sizeof new_xattrs);
327 if (!initxattrs)
328 return security_ops->inode_init_security(inode, dir, qstr,
329 NULL, NULL, NULL);
330 lsm_xattr = new_xattrs;
331 ret = security_ops->inode_init_security(inode, dir, qstr,
332 &lsm_xattr->name,
333 &lsm_xattr->value,
334 &lsm_xattr->value_len);
335 if (ret)
336 goto out;
337
338 evm_xattr = lsm_xattr + 1;
339 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
340 if (ret)
341 goto out;
342 ret = initxattrs(inode, new_xattrs, fs_data);
343out:
344 for (xattr = new_xattrs; xattr->name != NULL; xattr++) {
345 kfree(xattr->name);
346 kfree(xattr->value);
347 }
348 return (ret == -EOPNOTSUPP) ? 0 : ret;
349}
350EXPORT_SYMBOL(security_inode_init_security);
351
352int security_old_inode_init_security(struct inode *inode, struct inode *dir,
353 const struct qstr *qstr, char **name,
354 void **value, size_t *len)
355{
356 if (unlikely(IS_PRIVATE(inode)))
357 return -EOPNOTSUPP;
358 return security_ops->inode_init_security(inode, dir, qstr, name, value,
359 len);
360}
361EXPORT_SYMBOL(security_old_inode_init_security);
362
363#ifdef CONFIG_SECURITY_PATH
364int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
365 unsigned int dev)
366{
367 if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
368 return 0;
369 return security_ops->path_mknod(dir, dentry, mode, dev);
370}
371EXPORT_SYMBOL(security_path_mknod);
372
373int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
374{
375 if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
376 return 0;
377 return security_ops->path_mkdir(dir, dentry, mode);
378}
379EXPORT_SYMBOL(security_path_mkdir);
380
381int security_path_rmdir(struct path *dir, struct dentry *dentry)
382{
383 if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
384 return 0;
385 return security_ops->path_rmdir(dir, dentry);
386}
387
388int security_path_unlink(struct path *dir, struct dentry *dentry)
389{
390 if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
391 return 0;
392 return security_ops->path_unlink(dir, dentry);
393}
394EXPORT_SYMBOL(security_path_unlink);
395
396int security_path_symlink(struct path *dir, struct dentry *dentry,
397 const char *old_name)
398{
399 if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
400 return 0;
401 return security_ops->path_symlink(dir, dentry, old_name);
402}
403
404int security_path_link(struct dentry *old_dentry, struct path *new_dir,
405 struct dentry *new_dentry)
406{
407 if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
408 return 0;
409 return security_ops->path_link(old_dentry, new_dir, new_dentry);
410}
411
412int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
413 struct path *new_dir, struct dentry *new_dentry)
414{
415 if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
416 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
417 return 0;
418 return security_ops->path_rename(old_dir, old_dentry, new_dir,
419 new_dentry);
420}
421EXPORT_SYMBOL(security_path_rename);
422
423int security_path_truncate(struct path *path)
424{
425 if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
426 return 0;
427 return security_ops->path_truncate(path);
428}
429
430int security_path_chmod(struct path *path, umode_t mode)
431{
432 if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
433 return 0;
434 return security_ops->path_chmod(path, mode);
435}
436
437int security_path_chown(struct path *path, uid_t uid, gid_t gid)
438{
439 if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
440 return 0;
441 return security_ops->path_chown(path, uid, gid);
442}
443
444int security_path_chroot(struct path *path)
445{
446 return security_ops->path_chroot(path);
447}
448#endif
449
450int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
451{
452 if (unlikely(IS_PRIVATE(dir)))
453 return 0;
454 return security_ops->inode_create(dir, dentry, mode);
455}
456EXPORT_SYMBOL_GPL(security_inode_create);
457
458int security_inode_link(struct dentry *old_dentry, struct inode *dir,
459 struct dentry *new_dentry)
460{
461 if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
462 return 0;
463 return security_ops->inode_link(old_dentry, dir, new_dentry);
464}
465
466int security_inode_unlink(struct inode *dir, struct dentry *dentry)
467{
468 if (unlikely(IS_PRIVATE(dentry->d_inode)))
469 return 0;
470 return security_ops->inode_unlink(dir, dentry);
471}
472
473int security_inode_symlink(struct inode *dir, struct dentry *dentry,
474 const char *old_name)
475{
476 if (unlikely(IS_PRIVATE(dir)))
477 return 0;
478 return security_ops->inode_symlink(dir, dentry, old_name);
479}
480
481int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
482{
483 if (unlikely(IS_PRIVATE(dir)))
484 return 0;
485 return security_ops->inode_mkdir(dir, dentry, mode);
486}
487EXPORT_SYMBOL_GPL(security_inode_mkdir);
488
489int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
490{
491 if (unlikely(IS_PRIVATE(dentry->d_inode)))
492 return 0;
493 return security_ops->inode_rmdir(dir, dentry);
494}
495
496int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
497{
498 if (unlikely(IS_PRIVATE(dir)))
499 return 0;
500 return security_ops->inode_mknod(dir, dentry, mode, dev);
501}
502
503int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
504 struct inode *new_dir, struct dentry *new_dentry)
505{
506 if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
507 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
508 return 0;
509 return security_ops->inode_rename(old_dir, old_dentry,
510 new_dir, new_dentry);
511}
512
513int security_inode_readlink(struct dentry *dentry)
514{
515 if (unlikely(IS_PRIVATE(dentry->d_inode)))
516 return 0;
517 return security_ops->inode_readlink(dentry);
518}
519
520int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
521{
522 if (unlikely(IS_PRIVATE(dentry->d_inode)))
523 return 0;
524 return security_ops->inode_follow_link(dentry, nd);
525}
526
527int security_inode_permission(struct inode *inode, int mask)
528{
529 if (unlikely(IS_PRIVATE(inode)))
530 return 0;
531 return security_ops->inode_permission(inode, mask);
532}
533
534int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
535{
536 int ret;
537
538 if (unlikely(IS_PRIVATE(dentry->d_inode)))
539 return 0;
540 ret = security_ops->inode_setattr(dentry, attr);
541 if (ret)
542 return ret;
543 return evm_inode_setattr(dentry, attr);
544}
545EXPORT_SYMBOL_GPL(security_inode_setattr);
546
547int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
548{
549 if (unlikely(IS_PRIVATE(dentry->d_inode)))
550 return 0;
551 return security_ops->inode_getattr(mnt, dentry);
552}
553
554int security_inode_setxattr(struct dentry *dentry, const char *name,
555 const void *value, size_t size, int flags)
556{
557 int ret;
558
559 if (unlikely(IS_PRIVATE(dentry->d_inode)))
560 return 0;
561 ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
562 if (ret)
563 return ret;
564 return evm_inode_setxattr(dentry, name, value, size);
565}
566
567void security_inode_post_setxattr(struct dentry *dentry, const char *name,
568 const void *value, size_t size, int flags)
569{
570 if (unlikely(IS_PRIVATE(dentry->d_inode)))
571 return;
572 security_ops->inode_post_setxattr(dentry, name, value, size, flags);
573 evm_inode_post_setxattr(dentry, name, value, size);
574}
575
576int security_inode_getxattr(struct dentry *dentry, const char *name)
577{
578 if (unlikely(IS_PRIVATE(dentry->d_inode)))
579 return 0;
580 return security_ops->inode_getxattr(dentry, name);
581}
582
583int security_inode_listxattr(struct dentry *dentry)
584{
585 if (unlikely(IS_PRIVATE(dentry->d_inode)))
586 return 0;
587 return security_ops->inode_listxattr(dentry);
588}
589
590int security_inode_removexattr(struct dentry *dentry, const char *name)
591{
592 int ret;
593
594 if (unlikely(IS_PRIVATE(dentry->d_inode)))
595 return 0;
596 ret = security_ops->inode_removexattr(dentry, name);
597 if (ret)
598 return ret;
599 return evm_inode_removexattr(dentry, name);
600}
601
602int security_inode_need_killpriv(struct dentry *dentry)
603{
604 return security_ops->inode_need_killpriv(dentry);
605}
606
607int security_inode_killpriv(struct dentry *dentry)
608{
609 return security_ops->inode_killpriv(dentry);
610}
611
612int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
613{
614 if (unlikely(IS_PRIVATE(inode)))
615 return -EOPNOTSUPP;
616 return security_ops->inode_getsecurity(inode, name, buffer, alloc);
617}
618
619int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
620{
621 if (unlikely(IS_PRIVATE(inode)))
622 return -EOPNOTSUPP;
623 return security_ops->inode_setsecurity(inode, name, value, size, flags);
624}
625
626int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
627{
628 if (unlikely(IS_PRIVATE(inode)))
629 return 0;
630 return security_ops->inode_listsecurity(inode, buffer, buffer_size);
631}
632
633void security_inode_getsecid(const struct inode *inode, u32 *secid)
634{
635 security_ops->inode_getsecid(inode, secid);
636}
637
638int security_file_permission(struct file *file, int mask)
639{
640 int ret;
641
642 ret = security_ops->file_permission(file, mask);
643 if (ret)
644 return ret;
645
646 return fsnotify_perm(file, mask);
647}
648
649int security_file_alloc(struct file *file)
650{
651 return security_ops->file_alloc_security(file);
652}
653
654void security_file_free(struct file *file)
655{
656 security_ops->file_free_security(file);
657}
658
659int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
660{
661 return security_ops->file_ioctl(file, cmd, arg);
662}
663
664static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
665{
666 /*
667 * Does we have PROT_READ and does the application expect
668 * it to imply PROT_EXEC? If not, nothing to talk about...
669 */
670 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
671 return prot;
672 if (!(current->personality & READ_IMPLIES_EXEC))
673 return prot;
674 /*
675 * if that's an anonymous mapping, let it.
676 */
677 if (!file)
678 return prot | PROT_EXEC;
679 /*
680 * ditto if it's not on noexec mount, except that on !MMU we need
681 * BDI_CAP_EXEC_MMAP (== VM_MAYEXEC) in this case
682 */
683 if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) {
684#ifndef CONFIG_MMU
685 unsigned long caps = 0;
686 struct address_space *mapping = file->f_mapping;
687 if (mapping && mapping->backing_dev_info)
688 caps = mapping->backing_dev_info->capabilities;
689 if (!(caps & BDI_CAP_EXEC_MAP))
690 return prot;
691#endif
692 return prot | PROT_EXEC;
693 }
694 /* anything on noexec mount won't get PROT_EXEC */
695 return prot;
696}
697
698int security_mmap_file(struct file *file, unsigned long prot,
699 unsigned long flags)
700{
701 int ret;
702 ret = security_ops->mmap_file(file, prot,
703 mmap_prot(file, prot), flags);
704 if (ret)
705 return ret;
706 return ima_file_mmap(file, prot);
707}
708
709int security_mmap_addr(unsigned long addr)
710{
711 return security_ops->mmap_addr(addr);
712}
713
714int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
715 unsigned long prot)
716{
717 return security_ops->file_mprotect(vma, reqprot, prot);
718}
719
720int security_file_lock(struct file *file, unsigned int cmd)
721{
722 return security_ops->file_lock(file, cmd);
723}
724
725int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
726{
727 return security_ops->file_fcntl(file, cmd, arg);
728}
729
730int security_file_set_fowner(struct file *file)
731{
732 return security_ops->file_set_fowner(file);
733}
734
735int security_file_send_sigiotask(struct task_struct *tsk,
736 struct fown_struct *fown, int sig)
737{
738 return security_ops->file_send_sigiotask(tsk, fown, sig);
739}
740
741int security_file_receive(struct file *file)
742{
743 return security_ops->file_receive(file);
744}
745
746int security_file_open(struct file *file, const struct cred *cred)
747{
748 int ret;
749
750 ret = security_ops->file_open(file, cred);
751 if (ret)
752 return ret;
753
754 return fsnotify_perm(file, MAY_OPEN);
755}
756
757int security_task_create(unsigned long clone_flags)
758{
759 return security_ops->task_create(clone_flags);
760}
761
762void security_task_free(struct task_struct *task)
763{
764 security_ops->task_free(task);
765}
766
767int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
768{
769 return security_ops->cred_alloc_blank(cred, gfp);
770}
771
772void security_cred_free(struct cred *cred)
773{
774 security_ops->cred_free(cred);
775}
776
777int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
778{
779 return security_ops->cred_prepare(new, old, gfp);
780}
781
782void security_transfer_creds(struct cred *new, const struct cred *old)
783{
784 security_ops->cred_transfer(new, old);
785}
786
787int security_kernel_act_as(struct cred *new, u32 secid)
788{
789 return security_ops->kernel_act_as(new, secid);
790}
791
792int security_kernel_create_files_as(struct cred *new, struct inode *inode)
793{
794 return security_ops->kernel_create_files_as(new, inode);
795}
796
797int security_kernel_module_request(char *kmod_name)
798{
799 return security_ops->kernel_module_request(kmod_name);
800}
801
802int security_task_fix_setuid(struct cred *new, const struct cred *old,
803 int flags)
804{
805 return security_ops->task_fix_setuid(new, old, flags);
806}
807
808int security_task_setpgid(struct task_struct *p, pid_t pgid)
809{
810 return security_ops->task_setpgid(p, pgid);
811}
812
813int security_task_getpgid(struct task_struct *p)
814{
815 return security_ops->task_getpgid(p);
816}
817
818int security_task_getsid(struct task_struct *p)
819{
820 return security_ops->task_getsid(p);
821}
822
823void security_task_getsecid(struct task_struct *p, u32 *secid)
824{
825 security_ops->task_getsecid(p, secid);
826}
827EXPORT_SYMBOL(security_task_getsecid);
828
829int security_task_setnice(struct task_struct *p, int nice)
830{
831 return security_ops->task_setnice(p, nice);
832}
833
834int security_task_setioprio(struct task_struct *p, int ioprio)
835{
836 return security_ops->task_setioprio(p, ioprio);
837}
838
839int security_task_getioprio(struct task_struct *p)
840{
841 return security_ops->task_getioprio(p);
842}
843
844int security_task_setrlimit(struct task_struct *p, unsigned int resource,
845 struct rlimit *new_rlim)
846{
847 return security_ops->task_setrlimit(p, resource, new_rlim);
848}
849
850int security_task_setscheduler(struct task_struct *p)
851{
852 return security_ops->task_setscheduler(p);
853}
854
855int security_task_getscheduler(struct task_struct *p)
856{
857 return security_ops->task_getscheduler(p);
858}
859
860int security_task_movememory(struct task_struct *p)
861{
862 return security_ops->task_movememory(p);
863}
864
865int security_task_kill(struct task_struct *p, struct siginfo *info,
866 int sig, u32 secid)
867{
868 return security_ops->task_kill(p, info, sig, secid);
869}
870
871int security_task_wait(struct task_struct *p)
872{
873 return security_ops->task_wait(p);
874}
875
876int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
877 unsigned long arg4, unsigned long arg5)
878{
879 return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
880}
881
882void security_task_to_inode(struct task_struct *p, struct inode *inode)
883{
884 security_ops->task_to_inode(p, inode);
885}
886
887int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
888{
889 return security_ops->ipc_permission(ipcp, flag);
890}
891
892void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
893{
894 security_ops->ipc_getsecid(ipcp, secid);
895}
896
897int security_msg_msg_alloc(struct msg_msg *msg)
898{
899 return security_ops->msg_msg_alloc_security(msg);
900}
901
902void security_msg_msg_free(struct msg_msg *msg)
903{
904 security_ops->msg_msg_free_security(msg);
905}
906
907int security_msg_queue_alloc(struct msg_queue *msq)
908{
909 return security_ops->msg_queue_alloc_security(msq);
910}
911
912void security_msg_queue_free(struct msg_queue *msq)
913{
914 security_ops->msg_queue_free_security(msq);
915}
916
917int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
918{
919 return security_ops->msg_queue_associate(msq, msqflg);
920}
921
922int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
923{
924 return security_ops->msg_queue_msgctl(msq, cmd);
925}
926
927int security_msg_queue_msgsnd(struct msg_queue *msq,
928 struct msg_msg *msg, int msqflg)
929{
930 return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
931}
932
933int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
934 struct task_struct *target, long type, int mode)
935{
936 return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
937}
938
939int security_shm_alloc(struct shmid_kernel *shp)
940{
941 return security_ops->shm_alloc_security(shp);
942}
943
944void security_shm_free(struct shmid_kernel *shp)
945{
946 security_ops->shm_free_security(shp);
947}
948
949int security_shm_associate(struct shmid_kernel *shp, int shmflg)
950{
951 return security_ops->shm_associate(shp, shmflg);
952}
953
954int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
955{
956 return security_ops->shm_shmctl(shp, cmd);
957}
958
959int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
960{
961 return security_ops->shm_shmat(shp, shmaddr, shmflg);
962}
963
964int security_sem_alloc(struct sem_array *sma)
965{
966 return security_ops->sem_alloc_security(sma);
967}
968
969void security_sem_free(struct sem_array *sma)
970{
971 security_ops->sem_free_security(sma);
972}
973
974int security_sem_associate(struct sem_array *sma, int semflg)
975{
976 return security_ops->sem_associate(sma, semflg);
977}
978
979int security_sem_semctl(struct sem_array *sma, int cmd)
980{
981 return security_ops->sem_semctl(sma, cmd);
982}
983
984int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
985 unsigned nsops, int alter)
986{
987 return security_ops->sem_semop(sma, sops, nsops, alter);
988}
989
990void security_d_instantiate(struct dentry *dentry, struct inode *inode)
991{
992 if (unlikely(inode && IS_PRIVATE(inode)))
993 return;
994 security_ops->d_instantiate(dentry, inode);
995}
996EXPORT_SYMBOL(security_d_instantiate);
997
998int security_getprocattr(struct task_struct *p, char *name, char **value)
999{
1000 return security_ops->getprocattr(p, name, value);
1001}
1002
1003int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1004{
1005 return security_ops->setprocattr(p, name, value, size);
1006}
1007
1008int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1009{
1010 return security_ops->netlink_send(sk, skb);
1011}
1012
1013int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1014{
1015 return security_ops->secid_to_secctx(secid, secdata, seclen);
1016}
1017EXPORT_SYMBOL(security_secid_to_secctx);
1018
1019int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1020{
1021 return security_ops->secctx_to_secid(secdata, seclen, secid);
1022}
1023EXPORT_SYMBOL(security_secctx_to_secid);
1024
1025void security_release_secctx(char *secdata, u32 seclen)
1026{
1027 security_ops->release_secctx(secdata, seclen);
1028}
1029EXPORT_SYMBOL(security_release_secctx);
1030
1031int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1032{
1033 return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1034}
1035EXPORT_SYMBOL(security_inode_notifysecctx);
1036
1037int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1038{
1039 return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1040}
1041EXPORT_SYMBOL(security_inode_setsecctx);
1042
1043int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1044{
1045 return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1046}
1047EXPORT_SYMBOL(security_inode_getsecctx);
1048
1049#ifdef CONFIG_SECURITY_NETWORK
1050
1051int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1052{
1053 return security_ops->unix_stream_connect(sock, other, newsk);
1054}
1055EXPORT_SYMBOL(security_unix_stream_connect);
1056
1057int security_unix_may_send(struct socket *sock, struct socket *other)
1058{
1059 return security_ops->unix_may_send(sock, other);
1060}
1061EXPORT_SYMBOL(security_unix_may_send);
1062
1063int security_socket_create(int family, int type, int protocol, int kern)
1064{
1065 return security_ops->socket_create(family, type, protocol, kern);
1066}
1067
1068int security_socket_post_create(struct socket *sock, int family,
1069 int type, int protocol, int kern)
1070{
1071 return security_ops->socket_post_create(sock, family, type,
1072 protocol, kern);
1073}
1074
1075int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1076{
1077 return security_ops->socket_bind(sock, address, addrlen);
1078}
1079
1080int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1081{
1082 return security_ops->socket_connect(sock, address, addrlen);
1083}
1084
1085int security_socket_listen(struct socket *sock, int backlog)
1086{
1087 return security_ops->socket_listen(sock, backlog);
1088}
1089
1090int security_socket_accept(struct socket *sock, struct socket *newsock)
1091{
1092 return security_ops->socket_accept(sock, newsock);
1093}
1094
1095int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1096{
1097 return security_ops->socket_sendmsg(sock, msg, size);
1098}
1099
1100int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1101 int size, int flags)
1102{
1103 return security_ops->socket_recvmsg(sock, msg, size, flags);
1104}
1105
1106int security_socket_getsockname(struct socket *sock)
1107{
1108 return security_ops->socket_getsockname(sock);
1109}
1110
1111int security_socket_getpeername(struct socket *sock)
1112{
1113 return security_ops->socket_getpeername(sock);
1114}
1115
1116int security_socket_getsockopt(struct socket *sock, int level, int optname)
1117{
1118 return security_ops->socket_getsockopt(sock, level, optname);
1119}
1120
1121int security_socket_setsockopt(struct socket *sock, int level, int optname)
1122{
1123 return security_ops->socket_setsockopt(sock, level, optname);
1124}
1125
1126int security_socket_shutdown(struct socket *sock, int how)
1127{
1128 return security_ops->socket_shutdown(sock, how);
1129}
1130
1131int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1132{
1133 return security_ops->socket_sock_rcv_skb(sk, skb);
1134}
1135EXPORT_SYMBOL(security_sock_rcv_skb);
1136
1137int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1138 int __user *optlen, unsigned len)
1139{
1140 return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1141}
1142
1143int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1144{
1145 return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1146}
1147EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1148
1149int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1150{
1151 return security_ops->sk_alloc_security(sk, family, priority);
1152}
1153
1154void security_sk_free(struct sock *sk)
1155{
1156 security_ops->sk_free_security(sk);
1157}
1158
1159void security_sk_clone(const struct sock *sk, struct sock *newsk)
1160{
1161 security_ops->sk_clone_security(sk, newsk);
1162}
1163EXPORT_SYMBOL(security_sk_clone);
1164
1165void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1166{
1167 security_ops->sk_getsecid(sk, &fl->flowi_secid);
1168}
1169EXPORT_SYMBOL(security_sk_classify_flow);
1170
1171void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1172{
1173 security_ops->req_classify_flow(req, fl);
1174}
1175EXPORT_SYMBOL(security_req_classify_flow);
1176
1177void security_sock_graft(struct sock *sk, struct socket *parent)
1178{
1179 security_ops->sock_graft(sk, parent);
1180}
1181EXPORT_SYMBOL(security_sock_graft);
1182
1183int security_inet_conn_request(struct sock *sk,
1184 struct sk_buff *skb, struct request_sock *req)
1185{
1186 return security_ops->inet_conn_request(sk, skb, req);
1187}
1188EXPORT_SYMBOL(security_inet_conn_request);
1189
1190void security_inet_csk_clone(struct sock *newsk,
1191 const struct request_sock *req)
1192{
1193 security_ops->inet_csk_clone(newsk, req);
1194}
1195
1196void security_inet_conn_established(struct sock *sk,
1197 struct sk_buff *skb)
1198{
1199 security_ops->inet_conn_established(sk, skb);
1200}
1201
1202int security_secmark_relabel_packet(u32 secid)
1203{
1204 return security_ops->secmark_relabel_packet(secid);
1205}
1206EXPORT_SYMBOL(security_secmark_relabel_packet);
1207
1208void security_secmark_refcount_inc(void)
1209{
1210 security_ops->secmark_refcount_inc();
1211}
1212EXPORT_SYMBOL(security_secmark_refcount_inc);
1213
1214void security_secmark_refcount_dec(void)
1215{
1216 security_ops->secmark_refcount_dec();
1217}
1218EXPORT_SYMBOL(security_secmark_refcount_dec);
1219
1220int security_tun_dev_create(void)
1221{
1222 return security_ops->tun_dev_create();
1223}
1224EXPORT_SYMBOL(security_tun_dev_create);
1225
1226void security_tun_dev_post_create(struct sock *sk)
1227{
1228 return security_ops->tun_dev_post_create(sk);
1229}
1230EXPORT_SYMBOL(security_tun_dev_post_create);
1231
1232int security_tun_dev_attach(struct sock *sk)
1233{
1234 return security_ops->tun_dev_attach(sk);
1235}
1236EXPORT_SYMBOL(security_tun_dev_attach);
1237
1238#endif /* CONFIG_SECURITY_NETWORK */
1239
1240#ifdef CONFIG_SECURITY_NETWORK_XFRM
1241
1242int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1243{
1244 return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1245}
1246EXPORT_SYMBOL(security_xfrm_policy_alloc);
1247
1248int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1249 struct xfrm_sec_ctx **new_ctxp)
1250{
1251 return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1252}
1253
1254void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1255{
1256 security_ops->xfrm_policy_free_security(ctx);
1257}
1258EXPORT_SYMBOL(security_xfrm_policy_free);
1259
1260int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1261{
1262 return security_ops->xfrm_policy_delete_security(ctx);
1263}
1264
1265int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1266{
1267 return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1268}
1269EXPORT_SYMBOL(security_xfrm_state_alloc);
1270
1271int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1272 struct xfrm_sec_ctx *polsec, u32 secid)
1273{
1274 if (!polsec)
1275 return 0;
1276 /*
1277 * We want the context to be taken from secid which is usually
1278 * from the sock.
1279 */
1280 return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1281}
1282
1283int security_xfrm_state_delete(struct xfrm_state *x)
1284{
1285 return security_ops->xfrm_state_delete_security(x);
1286}
1287EXPORT_SYMBOL(security_xfrm_state_delete);
1288
1289void security_xfrm_state_free(struct xfrm_state *x)
1290{
1291 security_ops->xfrm_state_free_security(x);
1292}
1293
1294int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1295{
1296 return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1297}
1298
1299int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1300 struct xfrm_policy *xp,
1301 const struct flowi *fl)
1302{
1303 return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1304}
1305
1306int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1307{
1308 return security_ops->xfrm_decode_session(skb, secid, 1);
1309}
1310
1311void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1312{
1313 int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1314
1315 BUG_ON(rc);
1316}
1317EXPORT_SYMBOL(security_skb_classify_flow);
1318
1319#endif /* CONFIG_SECURITY_NETWORK_XFRM */
1320
1321#ifdef CONFIG_KEYS
1322
1323int security_key_alloc(struct key *key, const struct cred *cred,
1324 unsigned long flags)
1325{
1326 return security_ops->key_alloc(key, cred, flags);
1327}
1328
1329void security_key_free(struct key *key)
1330{
1331 security_ops->key_free(key);
1332}
1333
1334int security_key_permission(key_ref_t key_ref,
1335 const struct cred *cred, key_perm_t perm)
1336{
1337 return security_ops->key_permission(key_ref, cred, perm);
1338}
1339
1340int security_key_getsecurity(struct key *key, char **_buffer)
1341{
1342 return security_ops->key_getsecurity(key, _buffer);
1343}
1344
1345#endif /* CONFIG_KEYS */
1346
1347#ifdef CONFIG_AUDIT
1348
1349int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1350{
1351 return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1352}
1353
1354int security_audit_rule_known(struct audit_krule *krule)
1355{
1356 return security_ops->audit_rule_known(krule);
1357}
1358
1359void security_audit_rule_free(void *lsmrule)
1360{
1361 security_ops->audit_rule_free(lsmrule);
1362}
1363
1364int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1365 struct audit_context *actx)
1366{
1367 return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1368}
1369
1370#endif /* CONFIG_AUDIT */