security.c 32.4 KB
Newer Older
L
Linus Torvalds 已提交
1 2 3 4 5 6 7 8 9 10 11 12 13
/*
 * Security plug functions
 *
 * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
 * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
 * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 */

14
#include <linux/capability.h>
L
Linus Torvalds 已提交
15 16 17 18
#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/security.h>
19
#include <linux/ima.h>
L
Linus Torvalds 已提交
20

21
/* Boot-time LSM user choice */
J
John Johansen 已提交
22 23
static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
	CONFIG_DEFAULT_SECURITY;
L
Linus Torvalds 已提交
24

M
Miklos Szeredi 已提交
25
/* things that live in capability.c */
26
extern void __init security_fixup_ops(struct security_operations *ops);
L
Linus Torvalds 已提交
27

28 29 30 31
static struct security_operations *security_ops;
static struct security_operations default_security_ops = {
	.name	= "default",
};
32

33
static inline int __init verify(struct security_operations *ops)
L
Linus Torvalds 已提交
34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58
{
	/* verify the security_operations structure exists */
	if (!ops)
		return -EINVAL;
	security_fixup_ops(ops);
	return 0;
}

static void __init do_security_initcalls(void)
{
	initcall_t *call;
	call = __security_initcall_start;
	while (call < __security_initcall_end) {
		(*call) ();
		call++;
	}
}

/**
 * security_init - initializes the security framework
 *
 * This should be called early in the kernel initialization sequence.
 */
int __init security_init(void)
{
59
	printk(KERN_INFO "Security Framework initialized\n");
L
Linus Torvalds 已提交
60

M
Miklos Szeredi 已提交
61 62
	security_fixup_ops(&default_security_ops);
	security_ops = &default_security_ops;
L
Linus Torvalds 已提交
63 64 65 66 67
	do_security_initcalls();

	return 0;
}

68 69 70 71 72
void reset_security_ops(void)
{
	security_ops = &default_security_ops;
}

73 74 75 76 77 78 79 80 81 82 83 84 85 86
/* Save user chosen LSM */
static int __init choose_lsm(char *str)
{
	strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
	return 1;
}
__setup("security=", choose_lsm);

/**
 * security_module_enable - Load given security module on boot ?
 * @ops: a pointer to the struct security_operations that is to be checked.
 *
 * Each LSM must pass this method before registering its own operations
 * to avoid security registration races. This method may also be used
87
 * to check if your LSM is currently loaded during kernel initialization.
88 89 90
 *
 * Return true if:
 *	-The passed LSM is the one chosen by user at boot time,
J
John Johansen 已提交
91
 *	-or the passed LSM is configured as the default and the user did not
92
 *	 choose an alternate LSM at boot time.
93 94 95 96
 * Otherwise, return false.
 */
int __init security_module_enable(struct security_operations *ops)
{
97
	return !strcmp(ops->name, chosen_lsm);
98 99
}

L
Linus Torvalds 已提交
100 101 102 103
/**
 * register_security - registers a security framework with the kernel
 * @ops: a pointer to the struct security_options that is to be registered
 *
104
 * This function allows a security module to register itself with the
L
Linus Torvalds 已提交
105
 * kernel security subsystem.  Some rudimentary checking is done on the @ops
106 107
 * value passed to this function. You'll need to check first if your LSM
 * is allowed to register its @ops by calling security_module_enable(@ops).
L
Linus Torvalds 已提交
108 109
 *
 * If there is already a security module registered with the kernel,
110
 * an error will be returned.  Otherwise %0 is returned on success.
L
Linus Torvalds 已提交
111
 */
112
int __init register_security(struct security_operations *ops)
L
Linus Torvalds 已提交
113 114 115
{
	if (verify(ops)) {
		printk(KERN_DEBUG "%s could not verify "
116
		       "security_operations structure.\n", __func__);
L
Linus Torvalds 已提交
117 118 119
		return -EINVAL;
	}

M
Miklos Szeredi 已提交
120
	if (security_ops != &default_security_ops)
L
Linus Torvalds 已提交
121 122 123 124 125 126 127
		return -EAGAIN;

	security_ops = ops;

	return 0;
}

128 129
/* Security operations */

130
int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
131
{
132
	return security_ops->ptrace_access_check(child, mode);
133 134 135 136 137
}

int security_ptrace_traceme(struct task_struct *parent)
{
	return security_ops->ptrace_traceme(parent);
138 139 140 141 142 143 144 145 146 147
}

int security_capget(struct task_struct *target,
		     kernel_cap_t *effective,
		     kernel_cap_t *inheritable,
		     kernel_cap_t *permitted)
{
	return security_ops->capget(target, effective, inheritable, permitted);
}

D
David Howells 已提交
148 149 150 151
int security_capset(struct cred *new, const struct cred *old,
		    const kernel_cap_t *effective,
		    const kernel_cap_t *inheritable,
		    const kernel_cap_t *permitted)
152
{
D
David Howells 已提交
153 154
	return security_ops->capset(new, old,
				    effective, inheritable, permitted);
155 156
}

157
int security_capable(const struct cred *cred, int cap)
158
{
159
	return security_ops->capable(current, cred, cap, SECURITY_CAP_AUDIT);
160 161
}

162
int security_real_capable(struct task_struct *tsk, int cap)
163
{
164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181
	const struct cred *cred;
	int ret;

	cred = get_task_cred(tsk);
	ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_AUDIT);
	put_cred(cred);
	return ret;
}

int security_real_capable_noaudit(struct task_struct *tsk, int cap)
{
	const struct cred *cred;
	int ret;

	cred = get_task_cred(tsk);
	ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_NOAUDIT);
	put_cred(cred);
	return ret;
182 183 184 185 186 187 188 189 190 191 192 193
}

int security_quotactl(int cmds, int type, int id, struct super_block *sb)
{
	return security_ops->quotactl(cmds, type, id, sb);
}

int security_quota_on(struct dentry *dentry)
{
	return security_ops->quota_on(dentry);
}

194
int security_syslog(int type)
195
{
196
	return security_ops->syslog(type);
197 198
}

199
int security_settime(const struct timespec *ts, const struct timezone *tz)
200 201 202 203 204 205
{
	return security_ops->settime(ts, tz);
}

int security_vm_enough_memory(long pages)
{
A
Alan Cox 已提交
206
	WARN_ON(current->mm == NULL);
207 208 209 210 211
	return security_ops->vm_enough_memory(current->mm, pages);
}

int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
{
A
Alan Cox 已提交
212
	WARN_ON(mm == NULL);
213 214 215
	return security_ops->vm_enough_memory(mm, pages);
}

A
Alan Cox 已提交
216 217 218 219 220 221 222
int security_vm_enough_memory_kern(long pages)
{
	/* If current->mm is a kernel thread then we will pass NULL,
	   for this specific case that is fine */
	return security_ops->vm_enough_memory(current->mm, pages);
}

223
int security_bprm_set_creds(struct linux_binprm *bprm)
224
{
225
	return security_ops->bprm_set_creds(bprm);
226 227
}

228
int security_bprm_check(struct linux_binprm *bprm)
229
{
230 231 232 233 234 235
	int ret;

	ret = security_ops->bprm_check_security(bprm);
	if (ret)
		return ret;
	return ima_bprm_check(bprm);
236 237
}

238
void security_bprm_committing_creds(struct linux_binprm *bprm)
239
{
H
Hannes Eder 已提交
240
	security_ops->bprm_committing_creds(bprm);
241 242
}

243
void security_bprm_committed_creds(struct linux_binprm *bprm)
244
{
H
Hannes Eder 已提交
245
	security_ops->bprm_committed_creds(bprm);
246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262
}

int security_bprm_secureexec(struct linux_binprm *bprm)
{
	return security_ops->bprm_secureexec(bprm);
}

int security_sb_alloc(struct super_block *sb)
{
	return security_ops->sb_alloc_security(sb);
}

void security_sb_free(struct super_block *sb)
{
	security_ops->sb_free_security(sb);
}

263
int security_sb_copy_data(char *orig, char *copy)
264
{
265
	return security_ops->sb_copy_data(orig, copy);
266
}
267
EXPORT_SYMBOL(security_sb_copy_data);
268

269 270 271 272 273
int security_sb_remount(struct super_block *sb, void *data)
{
	return security_ops->sb_remount(sb, data);
}

274
int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
275
{
276
	return security_ops->sb_kern_mount(sb, flags, data);
277 278
}

279 280 281 282 283
int security_sb_show_options(struct seq_file *m, struct super_block *sb)
{
	return security_ops->sb_show_options(m, sb);
}

284 285 286 287 288
int security_sb_statfs(struct dentry *dentry)
{
	return security_ops->sb_statfs(dentry);
}

289
int security_sb_mount(char *dev_name, struct path *path,
290 291
                       char *type, unsigned long flags, void *data)
{
292
	return security_ops->sb_mount(dev_name, path, type, flags, data);
293 294 295 296 297 298 299
}

int security_sb_umount(struct vfsmount *mnt, int flags)
{
	return security_ops->sb_umount(mnt, flags);
}

300
int security_sb_pivotroot(struct path *old_path, struct path *new_path)
301
{
302
	return security_ops->sb_pivotroot(old_path, new_path);
303 304
}

305
int security_sb_set_mnt_opts(struct super_block *sb,
306
				struct security_mnt_opts *opts)
307
{
308
	return security_ops->sb_set_mnt_opts(sb, opts);
309
}
310
EXPORT_SYMBOL(security_sb_set_mnt_opts);
311 312 313 314 315 316

void security_sb_clone_mnt_opts(const struct super_block *oldsb,
				struct super_block *newsb)
{
	security_ops->sb_clone_mnt_opts(oldsb, newsb);
}
317 318 319 320 321 322 323
EXPORT_SYMBOL(security_sb_clone_mnt_opts);

int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
{
	return security_ops->sb_parse_opts_str(options, opts);
}
EXPORT_SYMBOL(security_sb_parse_opts_str);
324

325 326 327
int security_inode_alloc(struct inode *inode)
{
	inode->i_security = NULL;
E
Eric Paris 已提交
328
	return security_ops->inode_alloc_security(inode);
329 330 331 332
}

void security_inode_free(struct inode *inode)
{
333
	ima_inode_free(inode);
334 335 336 337
	security_ops->inode_free_security(inode);
}

int security_inode_init_security(struct inode *inode, struct inode *dir,
338 339
				 const struct qstr *qstr, char **name,
				 void **value, size_t *len)
340 341 342
{
	if (unlikely(IS_PRIVATE(inode)))
		return -EOPNOTSUPP;
343 344
	return security_ops->inode_init_security(inode, dir, qstr, name, value,
						 len);
345 346 347
}
EXPORT_SYMBOL(security_inode_init_security);

348
#ifdef CONFIG_SECURITY_PATH
349
int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
350 351
			unsigned int dev)
{
352
	if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
353
		return 0;
354
	return security_ops->path_mknod(dir, dentry, mode, dev);
355 356 357
}
EXPORT_SYMBOL(security_path_mknod);

358
int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode)
359
{
360
	if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
361
		return 0;
362
	return security_ops->path_mkdir(dir, dentry, mode);
363
}
364
EXPORT_SYMBOL(security_path_mkdir);
365

366
int security_path_rmdir(struct path *dir, struct dentry *dentry)
367
{
368
	if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
369
		return 0;
370
	return security_ops->path_rmdir(dir, dentry);
371 372
}

373
int security_path_unlink(struct path *dir, struct dentry *dentry)
374
{
375
	if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
376
		return 0;
377
	return security_ops->path_unlink(dir, dentry);
378
}
379
EXPORT_SYMBOL(security_path_unlink);
380

381
int security_path_symlink(struct path *dir, struct dentry *dentry,
382 383
			  const char *old_name)
{
384
	if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
385
		return 0;
386
	return security_ops->path_symlink(dir, dentry, old_name);
387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405
}

int security_path_link(struct dentry *old_dentry, struct path *new_dir,
		       struct dentry *new_dentry)
{
	if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
		return 0;
	return security_ops->path_link(old_dentry, new_dir, new_dentry);
}

int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
			 struct path *new_dir, struct dentry *new_dentry)
{
	if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
		     (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
		return 0;
	return security_ops->path_rename(old_dir, old_dentry, new_dir,
					 new_dentry);
}
406
EXPORT_SYMBOL(security_path_rename);
407

408
int security_path_truncate(struct path *path)
409 410 411
{
	if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
		return 0;
412
	return security_ops->path_truncate(path);
413
}
414 415 416 417 418 419 420 421 422 423 424 425 426 427 428

int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
			mode_t mode)
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->path_chmod(dentry, mnt, mode);
}

int security_path_chown(struct path *path, uid_t uid, gid_t gid)
{
	if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
		return 0;
	return security_ops->path_chown(path, uid, gid);
}
T
Tetsuo Handa 已提交
429 430 431 432 433

int security_path_chroot(struct path *path)
{
	return security_ops->path_chroot(path);
}
434 435
#endif

436 437 438 439 440 441
int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
{
	if (unlikely(IS_PRIVATE(dir)))
		return 0;
	return security_ops->inode_create(dir, dentry, mode);
}
442
EXPORT_SYMBOL_GPL(security_inode_create);
443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472

int security_inode_link(struct dentry *old_dentry, struct inode *dir,
			 struct dentry *new_dentry)
{
	if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
		return 0;
	return security_ops->inode_link(old_dentry, dir, new_dentry);
}

int security_inode_unlink(struct inode *dir, struct dentry *dentry)
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->inode_unlink(dir, dentry);
}

int security_inode_symlink(struct inode *dir, struct dentry *dentry,
			    const char *old_name)
{
	if (unlikely(IS_PRIVATE(dir)))
		return 0;
	return security_ops->inode_symlink(dir, dentry, old_name);
}

int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
{
	if (unlikely(IS_PRIVATE(dir)))
		return 0;
	return security_ops->inode_mkdir(dir, dentry, mode);
}
473
EXPORT_SYMBOL_GPL(security_inode_mkdir);
474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512

int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->inode_rmdir(dir, dentry);
}

int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
{
	if (unlikely(IS_PRIVATE(dir)))
		return 0;
	return security_ops->inode_mknod(dir, dentry, mode, dev);
}

int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
			   struct inode *new_dir, struct dentry *new_dentry)
{
        if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
            (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
		return 0;
	return security_ops->inode_rename(old_dir, old_dentry,
					   new_dir, new_dentry);
}

int security_inode_readlink(struct dentry *dentry)
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->inode_readlink(dentry);
}

int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->inode_follow_link(dentry, nd);
}

513
int security_inode_permission(struct inode *inode, int mask)
514 515 516
{
	if (unlikely(IS_PRIVATE(inode)))
		return 0;
517
	return security_ops->inode_permission(inode, mask);
518 519
}

N
Nick Piggin 已提交
520 521 522 523 524 525 526 527 528
int security_inode_exec_permission(struct inode *inode, unsigned int flags)
{
	if (unlikely(IS_PRIVATE(inode)))
		return 0;
	if (flags)
		return -ECHILD;
	return security_ops->inode_permission(inode, MAY_EXEC);
}

529 530 531 532 533 534
int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->inode_setattr(dentry, attr);
}
535
EXPORT_SYMBOL_GPL(security_inode_setattr);
536 537 538 539 540 541 542 543

int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->inode_getattr(mnt, dentry);
}

544 545
int security_inode_setxattr(struct dentry *dentry, const char *name,
			    const void *value, size_t size, int flags)
546 547 548 549 550 551
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->inode_setxattr(dentry, name, value, size, flags);
}

552 553
void security_inode_post_setxattr(struct dentry *dentry, const char *name,
				  const void *value, size_t size, int flags)
554 555 556 557 558 559
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return;
	security_ops->inode_post_setxattr(dentry, name, value, size, flags);
}

560
int security_inode_getxattr(struct dentry *dentry, const char *name)
561 562 563 564 565 566 567 568 569 570 571 572 573
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->inode_getxattr(dentry, name);
}

int security_inode_listxattr(struct dentry *dentry)
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->inode_listxattr(dentry);
}

574
int security_inode_removexattr(struct dentry *dentry, const char *name)
575 576 577 578 579 580
{
	if (unlikely(IS_PRIVATE(dentry->d_inode)))
		return 0;
	return security_ops->inode_removexattr(dentry, name);
}

581 582 583 584 585 586 587 588 589 590
int security_inode_need_killpriv(struct dentry *dentry)
{
	return security_ops->inode_need_killpriv(dentry);
}

int security_inode_killpriv(struct dentry *dentry)
{
	return security_ops->inode_killpriv(dentry);
}

591
int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
592 593
{
	if (unlikely(IS_PRIVATE(inode)))
594
		return -EOPNOTSUPP;
595
	return security_ops->inode_getsecurity(inode, name, buffer, alloc);
596 597 598 599 600
}

int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
{
	if (unlikely(IS_PRIVATE(inode)))
601
		return -EOPNOTSUPP;
602 603 604 605 606 607 608 609 610 611
	return security_ops->inode_setsecurity(inode, name, value, size, flags);
}

int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
{
	if (unlikely(IS_PRIVATE(inode)))
		return 0;
	return security_ops->inode_listsecurity(inode, buffer, buffer_size);
}

612 613 614 615 616
void security_inode_getsecid(const struct inode *inode, u32 *secid)
{
	security_ops->inode_getsecid(inode, secid);
}

617 618
int security_file_permission(struct file *file, int mask)
{
619 620 621 622 623 624 625
	int ret;

	ret = security_ops->file_permission(file, mask);
	if (ret)
		return ret;

	return fsnotify_perm(file, mask);
626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646
}

int security_file_alloc(struct file *file)
{
	return security_ops->file_alloc_security(file);
}

void security_file_free(struct file *file)
{
	security_ops->file_free_security(file);
}

int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
	return security_ops->file_ioctl(file, cmd, arg);
}

int security_file_mmap(struct file *file, unsigned long reqprot,
			unsigned long prot, unsigned long flags,
			unsigned long addr, unsigned long addr_only)
{
647 648 649 650 651 652
	int ret;

	ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
	if (ret)
		return ret;
	return ima_file_mmap(file, prot);
653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686
}

int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
			    unsigned long prot)
{
	return security_ops->file_mprotect(vma, reqprot, prot);
}

int security_file_lock(struct file *file, unsigned int cmd)
{
	return security_ops->file_lock(file, cmd);
}

int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
{
	return security_ops->file_fcntl(file, cmd, arg);
}

int security_file_set_fowner(struct file *file)
{
	return security_ops->file_set_fowner(file);
}

int security_file_send_sigiotask(struct task_struct *tsk,
				  struct fown_struct *fown, int sig)
{
	return security_ops->file_send_sigiotask(tsk, fown, sig);
}

int security_file_receive(struct file *file)
{
	return security_ops->file_receive(file);
}

687
int security_dentry_open(struct file *file, const struct cred *cred)
688
{
689 690 691 692 693 694 695
	int ret;

	ret = security_ops->dentry_open(file, cred);
	if (ret)
		return ret;

	return fsnotify_perm(file, MAY_OPEN);
696 697 698 699 700 701 702
}

int security_task_create(unsigned long clone_flags)
{
	return security_ops->task_create(clone_flags);
}

703 704 705 706 707
int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
{
	return security_ops->cred_alloc_blank(cred, gfp);
}

D
David Howells 已提交
708
void security_cred_free(struct cred *cred)
709
{
D
David Howells 已提交
710
	security_ops->cred_free(cred);
711 712
}

D
David Howells 已提交
713
int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
714
{
D
David Howells 已提交
715 716 717
	return security_ops->cred_prepare(new, old, gfp);
}

718 719 720 721 722
void security_transfer_creds(struct cred *new, const struct cred *old)
{
	security_ops->cred_transfer(new, old);
}

723 724 725 726 727 728 729 730 731 732
int security_kernel_act_as(struct cred *new, u32 secid)
{
	return security_ops->kernel_act_as(new, secid);
}

int security_kernel_create_files_as(struct cred *new, struct inode *inode)
{
	return security_ops->kernel_create_files_as(new, inode);
}

733
int security_kernel_module_request(char *kmod_name)
734
{
735
	return security_ops->kernel_module_request(kmod_name);
736 737
}

D
David Howells 已提交
738 739
int security_task_fix_setuid(struct cred *new, const struct cred *old,
			     int flags)
740
{
D
David Howells 已提交
741
	return security_ops->task_fix_setuid(new, old, flags);
742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779
}

int security_task_setpgid(struct task_struct *p, pid_t pgid)
{
	return security_ops->task_setpgid(p, pgid);
}

int security_task_getpgid(struct task_struct *p)
{
	return security_ops->task_getpgid(p);
}

int security_task_getsid(struct task_struct *p)
{
	return security_ops->task_getsid(p);
}

void security_task_getsecid(struct task_struct *p, u32 *secid)
{
	security_ops->task_getsecid(p, secid);
}
EXPORT_SYMBOL(security_task_getsecid);

int security_task_setnice(struct task_struct *p, int nice)
{
	return security_ops->task_setnice(p, nice);
}

int security_task_setioprio(struct task_struct *p, int ioprio)
{
	return security_ops->task_setioprio(p, ioprio);
}

int security_task_getioprio(struct task_struct *p)
{
	return security_ops->task_getioprio(p);
}

780 781
int security_task_setrlimit(struct task_struct *p, unsigned int resource,
		struct rlimit *new_rlim)
782
{
783
	return security_ops->task_setrlimit(p, resource, new_rlim);
784 785
}

786
int security_task_setscheduler(struct task_struct *p)
787
{
788
	return security_ops->task_setscheduler(p);
789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812
}

int security_task_getscheduler(struct task_struct *p)
{
	return security_ops->task_getscheduler(p);
}

int security_task_movememory(struct task_struct *p)
{
	return security_ops->task_movememory(p);
}

int security_task_kill(struct task_struct *p, struct siginfo *info,
			int sig, u32 secid)
{
	return security_ops->task_kill(p, info, sig, secid);
}

int security_task_wait(struct task_struct *p)
{
	return security_ops->task_wait(p);
}

int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
D
David Howells 已提交
813
			 unsigned long arg4, unsigned long arg5)
814
{
D
David Howells 已提交
815
	return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
816 817 818 819 820 821 822 823 824 825 826 827
}

void security_task_to_inode(struct task_struct *p, struct inode *inode)
{
	security_ops->task_to_inode(p, inode);
}

int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
{
	return security_ops->ipc_permission(ipcp, flag);
}

828 829 830 831 832
void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
{
	security_ops->ipc_getsecid(ipcp, secid);
}

833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960
int security_msg_msg_alloc(struct msg_msg *msg)
{
	return security_ops->msg_msg_alloc_security(msg);
}

void security_msg_msg_free(struct msg_msg *msg)
{
	security_ops->msg_msg_free_security(msg);
}

int security_msg_queue_alloc(struct msg_queue *msq)
{
	return security_ops->msg_queue_alloc_security(msq);
}

void security_msg_queue_free(struct msg_queue *msq)
{
	security_ops->msg_queue_free_security(msq);
}

int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
{
	return security_ops->msg_queue_associate(msq, msqflg);
}

int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
{
	return security_ops->msg_queue_msgctl(msq, cmd);
}

int security_msg_queue_msgsnd(struct msg_queue *msq,
			       struct msg_msg *msg, int msqflg)
{
	return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
}

int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
			       struct task_struct *target, long type, int mode)
{
	return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
}

int security_shm_alloc(struct shmid_kernel *shp)
{
	return security_ops->shm_alloc_security(shp);
}

void security_shm_free(struct shmid_kernel *shp)
{
	security_ops->shm_free_security(shp);
}

int security_shm_associate(struct shmid_kernel *shp, int shmflg)
{
	return security_ops->shm_associate(shp, shmflg);
}

int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
{
	return security_ops->shm_shmctl(shp, cmd);
}

int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
{
	return security_ops->shm_shmat(shp, shmaddr, shmflg);
}

int security_sem_alloc(struct sem_array *sma)
{
	return security_ops->sem_alloc_security(sma);
}

void security_sem_free(struct sem_array *sma)
{
	security_ops->sem_free_security(sma);
}

int security_sem_associate(struct sem_array *sma, int semflg)
{
	return security_ops->sem_associate(sma, semflg);
}

int security_sem_semctl(struct sem_array *sma, int cmd)
{
	return security_ops->sem_semctl(sma, cmd);
}

int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
			unsigned nsops, int alter)
{
	return security_ops->sem_semop(sma, sops, nsops, alter);
}

void security_d_instantiate(struct dentry *dentry, struct inode *inode)
{
	if (unlikely(inode && IS_PRIVATE(inode)))
		return;
	security_ops->d_instantiate(dentry, inode);
}
EXPORT_SYMBOL(security_d_instantiate);

int security_getprocattr(struct task_struct *p, char *name, char **value)
{
	return security_ops->getprocattr(p, name, value);
}

int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
{
	return security_ops->setprocattr(p, name, value, size);
}

int security_netlink_send(struct sock *sk, struct sk_buff *skb)
{
	return security_ops->netlink_send(sk, skb);
}

int security_netlink_recv(struct sk_buff *skb, int cap)
{
	return security_ops->netlink_recv(skb, cap);
}
EXPORT_SYMBOL(security_netlink_recv);

int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
{
	return security_ops->secid_to_secctx(secid, secdata, seclen);
}
EXPORT_SYMBOL(security_secid_to_secctx);

961
int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
962 963 964 965 966
{
	return security_ops->secctx_to_secid(secdata, seclen, secid);
}
EXPORT_SYMBOL(security_secctx_to_secid);

967 968
void security_release_secctx(char *secdata, u32 seclen)
{
969
	security_ops->release_secctx(secdata, seclen);
970 971 972
}
EXPORT_SYMBOL(security_release_secctx);

973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990
int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
{
	return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
}
EXPORT_SYMBOL(security_inode_notifysecctx);

int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
{
	return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
}
EXPORT_SYMBOL(security_inode_setsecctx);

int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
{
	return security_ops->inode_getsecctx(inode, ctx, ctxlen);
}
EXPORT_SYMBOL(security_inode_getsecctx);

991 992
#ifdef CONFIG_SECURITY_NETWORK

993
int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097
{
	return security_ops->unix_stream_connect(sock, other, newsk);
}
EXPORT_SYMBOL(security_unix_stream_connect);

int security_unix_may_send(struct socket *sock,  struct socket *other)
{
	return security_ops->unix_may_send(sock, other);
}
EXPORT_SYMBOL(security_unix_may_send);

int security_socket_create(int family, int type, int protocol, int kern)
{
	return security_ops->socket_create(family, type, protocol, kern);
}

int security_socket_post_create(struct socket *sock, int family,
				int type, int protocol, int kern)
{
	return security_ops->socket_post_create(sock, family, type,
						protocol, kern);
}

int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
{
	return security_ops->socket_bind(sock, address, addrlen);
}

int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
{
	return security_ops->socket_connect(sock, address, addrlen);
}

int security_socket_listen(struct socket *sock, int backlog)
{
	return security_ops->socket_listen(sock, backlog);
}

int security_socket_accept(struct socket *sock, struct socket *newsock)
{
	return security_ops->socket_accept(sock, newsock);
}

int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
{
	return security_ops->socket_sendmsg(sock, msg, size);
}

int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
			    int size, int flags)
{
	return security_ops->socket_recvmsg(sock, msg, size, flags);
}

int security_socket_getsockname(struct socket *sock)
{
	return security_ops->socket_getsockname(sock);
}

int security_socket_getpeername(struct socket *sock)
{
	return security_ops->socket_getpeername(sock);
}

int security_socket_getsockopt(struct socket *sock, int level, int optname)
{
	return security_ops->socket_getsockopt(sock, level, optname);
}

int security_socket_setsockopt(struct socket *sock, int level, int optname)
{
	return security_ops->socket_setsockopt(sock, level, optname);
}

int security_socket_shutdown(struct socket *sock, int how)
{
	return security_ops->socket_shutdown(sock, how);
}

int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
{
	return security_ops->socket_sock_rcv_skb(sk, skb);
}
EXPORT_SYMBOL(security_sock_rcv_skb);

int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
				      int __user *optlen, unsigned len)
{
	return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
}

int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
{
	return security_ops->socket_getpeersec_dgram(sock, skb, secid);
}
EXPORT_SYMBOL(security_socket_getpeersec_dgram);

int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
{
	return security_ops->sk_alloc_security(sk, family, priority);
}

void security_sk_free(struct sock *sk)
{
1098
	security_ops->sk_free_security(sk);
1099 1100 1101 1102
}

void security_sk_clone(const struct sock *sk, struct sock *newsk)
{
1103
	security_ops->sk_clone_security(sk, newsk);
1104 1105 1106 1107
}

void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
{
1108
	security_ops->sk_getsecid(sk, &fl->flowi_secid);
1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142
}
EXPORT_SYMBOL(security_sk_classify_flow);

void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
{
	security_ops->req_classify_flow(req, fl);
}
EXPORT_SYMBOL(security_req_classify_flow);

void security_sock_graft(struct sock *sk, struct socket *parent)
{
	security_ops->sock_graft(sk, parent);
}
EXPORT_SYMBOL(security_sock_graft);

int security_inet_conn_request(struct sock *sk,
			struct sk_buff *skb, struct request_sock *req)
{
	return security_ops->inet_conn_request(sk, skb, req);
}
EXPORT_SYMBOL(security_inet_conn_request);

void security_inet_csk_clone(struct sock *newsk,
			const struct request_sock *req)
{
	security_ops->inet_csk_clone(newsk, req);
}

void security_inet_conn_established(struct sock *sk,
			struct sk_buff *skb)
{
	security_ops->inet_conn_established(sk, skb);
}

1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160
int security_secmark_relabel_packet(u32 secid)
{
	return security_ops->secmark_relabel_packet(secid);
}
EXPORT_SYMBOL(security_secmark_relabel_packet);

void security_secmark_refcount_inc(void)
{
	security_ops->secmark_refcount_inc();
}
EXPORT_SYMBOL(security_secmark_refcount_inc);

void security_secmark_refcount_dec(void)
{
	security_ops->secmark_refcount_dec();
}
EXPORT_SYMBOL(security_secmark_refcount_dec);

P
Paul Moore 已提交
1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178
int security_tun_dev_create(void)
{
	return security_ops->tun_dev_create();
}
EXPORT_SYMBOL(security_tun_dev_create);

void security_tun_dev_post_create(struct sock *sk)
{
	return security_ops->tun_dev_post_create(sk);
}
EXPORT_SYMBOL(security_tun_dev_post_create);

int security_tun_dev_attach(struct sock *sk)
{
	return security_ops->tun_dev_attach(sk);
}
EXPORT_SYMBOL(security_tun_dev_attach);

1179 1180 1181 1182
#endif	/* CONFIG_SECURITY_NETWORK */

#ifdef CONFIG_SECURITY_NETWORK_XFRM

1183
int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1184
{
1185
	return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1186 1187 1188
}
EXPORT_SYMBOL(security_xfrm_policy_alloc);

1189 1190
int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
			      struct xfrm_sec_ctx **new_ctxp)
1191
{
1192
	return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1193 1194
}

1195
void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1196
{
1197
	security_ops->xfrm_policy_free_security(ctx);
1198 1199 1200
}
EXPORT_SYMBOL(security_xfrm_policy_free);

1201
int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1202
{
1203
	return security_ops->xfrm_policy_delete_security(ctx);
1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234
}

int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
{
	return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
}
EXPORT_SYMBOL(security_xfrm_state_alloc);

int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
				      struct xfrm_sec_ctx *polsec, u32 secid)
{
	if (!polsec)
		return 0;
	/*
	 * We want the context to be taken from secid which is usually
	 * from the sock.
	 */
	return security_ops->xfrm_state_alloc_security(x, NULL, secid);
}

int security_xfrm_state_delete(struct xfrm_state *x)
{
	return security_ops->xfrm_state_delete_security(x);
}
EXPORT_SYMBOL(security_xfrm_state_delete);

void security_xfrm_state_free(struct xfrm_state *x)
{
	security_ops->xfrm_state_free_security(x);
}

1235
int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1236
{
1237
	return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1238 1239 1240
}

int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1241 1242
				       struct xfrm_policy *xp,
				       const struct flowi *fl)
1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253
{
	return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
}

int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
{
	return security_ops->xfrm_decode_session(skb, secid, 1);
}

void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
{
1254
	int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1255 1256 1257 1258 1259 1260 1261 1262 1263

	BUG_ON(rc);
}
EXPORT_SYMBOL(security_skb_classify_flow);

#endif	/* CONFIG_SECURITY_NETWORK_XFRM */

#ifdef CONFIG_KEYS

D
David Howells 已提交
1264 1265
int security_key_alloc(struct key *key, const struct cred *cred,
		       unsigned long flags)
1266
{
D
David Howells 已提交
1267
	return security_ops->key_alloc(key, cred, flags);
1268 1269 1270 1271 1272 1273 1274 1275
}

void security_key_free(struct key *key)
{
	security_ops->key_free(key);
}

int security_key_permission(key_ref_t key_ref,
D
David Howells 已提交
1276
			    const struct cred *cred, key_perm_t perm)
1277
{
D
David Howells 已提交
1278
	return security_ops->key_permission(key_ref, cred, perm);
1279 1280
}

1281 1282 1283 1284 1285
int security_key_getsecurity(struct key *key, char **_buffer)
{
	return security_ops->key_getsecurity(key, _buffer);
}

1286
#endif	/* CONFIG_KEYS */
1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311

#ifdef CONFIG_AUDIT

int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
{
	return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
}

int security_audit_rule_known(struct audit_krule *krule)
{
	return security_ops->audit_rule_known(krule);
}

void security_audit_rule_free(void *lsmrule)
{
	security_ops->audit_rule_free(lsmrule);
}

int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
			      struct audit_context *actx)
{
	return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
}

#endif /* CONFIG_AUDIT */