security/security.c

   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/ima.h>
  20
  21 /* Boot-time LSM user choice */
  22 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  23         CONFIG_DEFAULT_SECURITY;
  24
  25 /* things that live in capability.c */
  26 extern void security_fixup_ops(struct security_operations *ops);
  27
  28 static struct security_operations *security_ops;
  29 static struct security_operations default_security_ops = {
  30         .name   = "default",
  31 };
  32
  33 static inline int verify(struct security_operations *ops)
  34 {
  35         /* verify the security_operations structure exists */
  36         if (!ops)
  37                 return -EINVAL;
  38         security_fixup_ops(ops);
  39         return 0;
  40 }
  41
  42 static void __init do_security_initcalls(void)
  43 {
  44         initcall_t *call;
  45         call = __security_initcall_start;
  46         while (call < __security_initcall_end) {
  47                 (*call) ();
  48                 call++;
  49         }
  50 }
  51
  52 /**
  53  * security_init - initializes the security framework
  54  *
  55  * This should be called early in the kernel initialization sequence.
  56  */
  57 int __init security_init(void)
  58 {
  59         printk(KERN_INFO "Security Framework initialized\n");
  60
  61         security_fixup_ops(&default_security_ops);
  62         security_ops = &default_security_ops;
  63         do_security_initcalls();
  64
  65         return 0;
  66 }
  67
  68 void reset_security_ops(void)
  69 {
  70         security_ops = &default_security_ops;
  71 }
  72
  73 /* Save user chosen LSM */
  74 static int __init choose_lsm(char *str)
  75 {
  76         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  77         return 1;
  78 }
  79 __setup("security=", choose_lsm);
  80
  81 /**
  82  * security_module_enable - Load given security module on boot ?
  83  * @ops: a pointer to the struct security_operations that is to be checked.
  84  *
  85  * Each LSM must pass this method before registering its own operations
  86  * to avoid security registration races. This method may also be used
  87  * to check if your LSM is currently loaded during kernel initialization.
  88  *
  89  * Return true if:
  90  *      -The passed LSM is the one chosen by user at boot time,
  91  *      -or the passed LSM is configured as the default and the user did not
  92  *       choose an alternate LSM at boot time,
  93  *      -or there is no default LSM set and the user didn't specify a
  94  *       specific LSM and we're the first to ask for registration permission,
  95  *      -or the passed LSM is currently loaded.
  96  * Otherwise, return false.
  97  */
  98 int __init security_module_enable(struct security_operations *ops)
  99 {
 100         if (!*chosen_lsm)
 101                 strncpy(chosen_lsm, ops->name, SECURITY_NAME_MAX);
 102         else if (strncmp(ops->name, chosen_lsm, SECURITY_NAME_MAX))
 103                 return 0;
 104
 105         return 1;
 106 }
 107
 108 /**
 109  * register_security - registers a security framework with the kernel
 110  * @ops: a pointer to the struct security_options that is to be registered
 111  *
 112  * This function allows a security module to register itself with the
 113  * kernel security subsystem.  Some rudimentary checking is done on the @ops
 114  * value passed to this function. You'll need to check first if your LSM
 115  * is allowed to register its @ops by calling security_module_enable(@ops).
 116  *
 117  * If there is already a security module registered with the kernel,
 118  * an error will be returned.  Otherwise %0 is returned on success.
 119  */
 120 int register_security(struct security_operations *ops)
 121 {
 122         if (verify(ops)) {
 123                 printk(KERN_DEBUG "%s could not verify "
 124                        "security_operations structure.\n", __func__);
 125                 return -EINVAL;
 126         }
 127
 128         if (security_ops != &default_security_ops)
 129                 return -EAGAIN;
 130
 131         security_ops = ops;
 132
 133         return 0;
 134 }
 135
 136 /* Security operations */
 137
 138 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 139 {
 140         return security_ops->ptrace_access_check(child, mode);
 141 }
 142
 143 int security_ptrace_traceme(struct task_struct *parent)
 144 {
 145         return security_ops->ptrace_traceme(parent);
 146 }
 147
 148 int security_capget(struct task_struct *target,
 149                      kernel_cap_t *effective,
 150                      kernel_cap_t *inheritable,
 151                      kernel_cap_t *permitted)
 152 {
 153         return security_ops->capget(target, effective, inheritable, permitted);
 154 }
 155
 156 int security_capset(struct cred *new, const struct cred *old,
 157                     const kernel_cap_t *effective,
 158                     const kernel_cap_t *inheritable,
 159                     const kernel_cap_t *permitted)
 160 {
 161         return security_ops->capset(new, old,
 162                                     effective, inheritable, permitted);
 163 }
 164
 165 int security_capable(int cap)
 166 {
 167         return security_ops->capable(current, current_cred(), cap,
 168                                      SECURITY_CAP_AUDIT);
 169 }
 170
 171 int security_real_capable(struct task_struct *tsk, int cap)
 172 {
 173         const struct cred *cred;
 174         int ret;
 175
 176         cred = get_task_cred(tsk);
 177         ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_AUDIT);
 178         put_cred(cred);
 179         return ret;
 180 }
 181
 182 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
 183 {
 184         const struct cred *cred;
 185         int ret;
 186
 187         cred = get_task_cred(tsk);
 188         ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_NOAUDIT);
 189         put_cred(cred);
 190         return ret;
 191 }
 192
 193 int security_acct(struct file *file)
 194 {
 195         return security_ops->acct(file);
 196 }
 197
 198 int security_sysctl(struct ctl_table *table, int op)
 199 {
 200         return security_ops->sysctl(table, op);
 201 }
 202
 203 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 204 {
 205         return security_ops->quotactl(cmds, type, id, sb);
 206 }
 207
 208 int security_quota_on(struct dentry *dentry)
 209 {
 210         return security_ops->quota_on(dentry);
 211 }
 212
 213 int security_syslog(int type, bool from_file)
 214 {
 215         return security_ops->syslog(type, from_file);
 216 }
 217
 218 int security_settime(struct timespec *ts, struct timezone *tz)
 219 {
 220         return security_ops->settime(ts, tz);
 221 }
 222
 223 int security_vm_enough_memory(long pages)
 224 {
 225         WARN_ON(current->mm == NULL);
 226         return security_ops->vm_enough_memory(current->mm, pages);
 227 }
 228
 229 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 230 {
 231         WARN_ON(mm == NULL);
 232         return security_ops->vm_enough_memory(mm, pages);
 233 }
 234
 235 int security_vm_enough_memory_kern(long pages)
 236 {
 237         /* If current->mm is a kernel thread then we will pass NULL,
 238            for this specific case that is fine */
 239         return security_ops->vm_enough_memory(current->mm, pages);
 240 }
 241
 242 int security_bprm_set_creds(struct linux_binprm *bprm)
 243 {
 244         return security_ops->bprm_set_creds(bprm);
 245 }
 246
 247 int security_bprm_check(struct linux_binprm *bprm)
 248 {
 249         int ret;
 250
 251         ret = security_ops->bprm_check_security(bprm);
 252         if (ret)
 253                 return ret;
 254         return ima_bprm_check(bprm);
 255 }
 256
 257 void security_bprm_committing_creds(struct linux_binprm *bprm)
 258 {
 259         security_ops->bprm_committing_creds(bprm);
 260 }
 261
 262 void security_bprm_committed_creds(struct linux_binprm *bprm)
 263 {
 264         security_ops->bprm_committed_creds(bprm);
 265 }
 266
 267 int security_bprm_secureexec(struct linux_binprm *bprm)
 268 {
 269         return security_ops->bprm_secureexec(bprm);
 270 }
 271
 272 int security_sb_alloc(struct super_block *sb)
 273 {
 274         return security_ops->sb_alloc_security(sb);
 275 }
 276
 277 void security_sb_free(struct super_block *sb)
 278 {
 279         security_ops->sb_free_security(sb);
 280 }
 281
 282 int security_sb_copy_data(char *orig, char *copy)
 283 {
 284         return security_ops->sb_copy_data(orig, copy);
 285 }
 286 EXPORT_SYMBOL(security_sb_copy_data);
 287
 288 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 289 {
 290         return security_ops->sb_kern_mount(sb, flags, data);
 291 }
 292
 293 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 294 {
 295         return security_ops->sb_show_options(m, sb);
 296 }
 297
 298 int security_sb_statfs(struct dentry *dentry)
 299 {
 300         return security_ops->sb_statfs(dentry);
 301 }
 302
 303 int security_sb_mount(char *dev_name, struct path *path,
 304                        char *type, unsigned long flags, void *data)
 305 {
 306         return security_ops->sb_mount(dev_name, path, type, flags, data);
 307 }
 308
 309 int security_sb_check_sb(struct vfsmount *mnt, struct path *path)
 310 {
 311         return security_ops->sb_check_sb(mnt, path);
 312 }
 313
 314 int security_sb_umount(struct vfsmount *mnt, int flags)
 315 {
 316         return security_ops->sb_umount(mnt, flags);
 317 }
 318
 319 void security_sb_umount_close(struct vfsmount *mnt)
 320 {
 321         security_ops->sb_umount_close(mnt);
 322 }
 323
 324 void security_sb_umount_busy(struct vfsmount *mnt)
 325 {
 326         security_ops->sb_umount_busy(mnt);
 327 }
 328
 329 void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data)
 330 {
 331         security_ops->sb_post_remount(mnt, flags, data);
 332 }
 333
 334 void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint)
 335 {
 336         security_ops->sb_post_addmount(mnt, mountpoint);
 337 }
 338
 339 int security_sb_pivotroot(struct path *old_path, struct path *new_path)
 340 {
 341         return security_ops->sb_pivotroot(old_path, new_path);
 342 }
 343
 344 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path)
 345 {
 346         security_ops->sb_post_pivotroot(old_path, new_path);
 347 }
 348
 349 int security_sb_set_mnt_opts(struct super_block *sb,
 350                                 struct security_mnt_opts *opts)
 351 {
 352         return security_ops->sb_set_mnt_opts(sb, opts);
 353 }
 354 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 355
 356 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
 357                                 struct super_block *newsb)
 358 {
 359         security_ops->sb_clone_mnt_opts(oldsb, newsb);
 360 }
 361 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 362
 363 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 364 {
 365         return security_ops->sb_parse_opts_str(options, opts);
 366 }
 367 EXPORT_SYMBOL(security_sb_parse_opts_str);
 368
 369 int security_inode_alloc(struct inode *inode)
 370 {
 371         int ret;
 372
 373         inode->i_security = NULL;
 374         ret =  security_ops->inode_alloc_security(inode);
 375         if (ret)
 376                 return ret;
 377         ret = ima_inode_alloc(inode);
 378         if (ret)
 379                 security_inode_free(inode);
 380         return ret;
 381 }
 382
 383 void security_inode_free(struct inode *inode)
 384 {
 385         ima_inode_free(inode);
 386         security_ops->inode_free_security(inode);
 387 }
 388
 389 int security_inode_init_security(struct inode *inode, struct inode *dir,
 390                                   char **name, void **value, size_t *len)
 391 {
 392         if (unlikely(IS_PRIVATE(inode)))
 393                 return -EOPNOTSUPP;
 394         return security_ops->inode_init_security(inode, dir, name, value, len);
 395 }
 396 EXPORT_SYMBOL(security_inode_init_security);
 397
 398 #ifdef CONFIG_SECURITY_PATH
 399 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
 400                         unsigned int dev)
 401 {
 402         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 403                 return 0;
 404         return security_ops->path_mknod(dir, dentry, mode, dev);
 405 }
 406 EXPORT_SYMBOL(security_path_mknod);
 407
 408 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode)
 409 {
 410         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 411                 return 0;
 412         return security_ops->path_mkdir(dir, dentry, mode);
 413 }
 414
 415 int security_path_rmdir(struct path *dir, struct dentry *dentry)
 416 {
 417         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 418                 return 0;
 419         return security_ops->path_rmdir(dir, dentry);
 420 }
 421
 422 int security_path_unlink(struct path *dir, struct dentry *dentry)
 423 {
 424         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 425                 return 0;
 426         return security_ops->path_unlink(dir, dentry);
 427 }
 428
 429 int security_path_symlink(struct path *dir, struct dentry *dentry,
 430                           const char *old_name)
 431 {
 432         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 433                 return 0;
 434         return security_ops->path_symlink(dir, dentry, old_name);
 435 }
 436
 437 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
 438                        struct dentry *new_dentry)
 439 {
 440         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 441                 return 0;
 442         return security_ops->path_link(old_dentry, new_dir, new_dentry);
 443 }
 444
 445 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
 446                          struct path *new_dir, struct dentry *new_dentry)
 447 {
 448         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 449                      (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 450                 return 0;
 451         return security_ops->path_rename(old_dir, old_dentry, new_dir,
 452                                          new_dentry);
 453 }
 454
 455 int security_path_truncate(struct path *path, loff_t length,
 456                            unsigned int time_attrs)
 457 {
 458         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 459                 return 0;
 460         return security_ops->path_truncate(path, length, time_attrs);
 461 }
 462
 463 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
 464                         mode_t mode)
 465 {
 466         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 467                 return 0;
 468         return security_ops->path_chmod(dentry, mnt, mode);
 469 }
 470
 471 int security_path_chown(struct path *path, uid_t uid, gid_t gid)
 472 {
 473         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 474                 return 0;
 475         return security_ops->path_chown(path, uid, gid);
 476 }
 477
 478 int security_path_chroot(struct path *path)
 479 {
 480         return security_ops->path_chroot(path);
 481 }
 482 #endif
 483
 484 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
 485 {
 486         if (unlikely(IS_PRIVATE(dir)))
 487                 return 0;
 488         return security_ops->inode_create(dir, dentry, mode);
 489 }
 490 EXPORT_SYMBOL_GPL(security_inode_create);
 491
 492 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 493                          struct dentry *new_dentry)
 494 {
 495         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 496                 return 0;
 497         return security_ops->inode_link(old_dentry, dir, new_dentry);
 498 }
 499
 500 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 501 {
 502         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 503                 return 0;
 504         return security_ops->inode_unlink(dir, dentry);
 505 }
 506
 507 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 508                             const char *old_name)
 509 {
 510         if (unlikely(IS_PRIVATE(dir)))
 511                 return 0;
 512         return security_ops->inode_symlink(dir, dentry, old_name);
 513 }
 514
 515 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 516 {
 517         if (unlikely(IS_PRIVATE(dir)))
 518                 return 0;
 519         return security_ops->inode_mkdir(dir, dentry, mode);
 520 }
 521 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 522
 523 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 524 {
 525         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 526                 return 0;
 527         return security_ops->inode_rmdir(dir, dentry);
 528 }
 529
 530 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 531 {
 532         if (unlikely(IS_PRIVATE(dir)))
 533                 return 0;
 534         return security_ops->inode_mknod(dir, dentry, mode, dev);
 535 }
 536
 537 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 538                            struct inode *new_dir, struct dentry *new_dentry)
 539 {
 540         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 541             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 542                 return 0;
 543         return security_ops->inode_rename(old_dir, old_dentry,
 544                                            new_dir, new_dentry);
 545 }
 546
 547 int security_inode_readlink(struct dentry *dentry)
 548 {
 549         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 550                 return 0;
 551         return security_ops->inode_readlink(dentry);
 552 }
 553
 554 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 555 {
 556         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 557                 return 0;
 558         return security_ops->inode_follow_link(dentry, nd);
 559 }
 560
 561 int security_inode_permission(struct inode *inode, int mask)
 562 {
 563         if (unlikely(IS_PRIVATE(inode)))
 564                 return 0;
 565         return security_ops->inode_permission(inode, mask);
 566 }
 567
 568 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 569 {
 570         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 571                 return 0;
 572         return security_ops->inode_setattr(dentry, attr);
 573 }
 574 EXPORT_SYMBOL_GPL(security_inode_setattr);
 575
 576 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 577 {
 578         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 579                 return 0;
 580         return security_ops->inode_getattr(mnt, dentry);
 581 }
 582
 583 void security_inode_delete(struct inode *inode)
 584 {
 585         if (unlikely(IS_PRIVATE(inode)))
 586                 return;
 587         security_ops->inode_delete(inode);
 588 }
 589
 590 int security_inode_setxattr(struct dentry *dentry, const char *name,
 591                             const void *value, size_t size, int flags)
 592 {
 593         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 594                 return 0;
 595         return security_ops->inode_setxattr(dentry, name, value, size, flags);
 596 }
 597
 598 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 599                                   const void *value, size_t size, int flags)
 600 {
 601         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 602                 return;
 603         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 604 }
 605
 606 int security_inode_getxattr(struct dentry *dentry, const char *name)
 607 {
 608         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 609                 return 0;
 610         return security_ops->inode_getxattr(dentry, name);
 611 }
 612
 613 int security_inode_listxattr(struct dentry *dentry)
 614 {
 615         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 616                 return 0;
 617         return security_ops->inode_listxattr(dentry);
 618 }
 619
 620 int security_inode_removexattr(struct dentry *dentry, const char *name)
 621 {
 622         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 623                 return 0;
 624         return security_ops->inode_removexattr(dentry, name);
 625 }
 626
 627 int security_inode_need_killpriv(struct dentry *dentry)
 628 {
 629         return security_ops->inode_need_killpriv(dentry);
 630 }
 631
 632 int security_inode_killpriv(struct dentry *dentry)
 633 {
 634         return security_ops->inode_killpriv(dentry);
 635 }
 636
 637 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 638 {
 639         if (unlikely(IS_PRIVATE(inode)))
 640                 return -EOPNOTSUPP;
 641         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 642 }
 643
 644 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 645 {
 646         if (unlikely(IS_PRIVATE(inode)))
 647                 return -EOPNOTSUPP;
 648         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 649 }
 650
 651 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 652 {
 653         if (unlikely(IS_PRIVATE(inode)))
 654                 return 0;
 655         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 656 }
 657
 658 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 659 {
 660         security_ops->inode_getsecid(inode, secid);
 661 }
 662
 663 int security_file_permission(struct file *file, int mask)
 664 {
 665         return security_ops->file_permission(file, mask);
 666 }
 667
 668 int security_file_alloc(struct file *file)
 669 {
 670         return security_ops->file_alloc_security(file);
 671 }
 672
 673 void security_file_free(struct file *file)
 674 {
 675         security_ops->file_free_security(file);
 676 }
 677
 678 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 679 {
 680         return security_ops->file_ioctl(file, cmd, arg);
 681 }
 682
 683 int security_file_mmap(struct file *file, unsigned long reqprot,
 684                         unsigned long prot, unsigned long flags,
 685                         unsigned long addr, unsigned long addr_only)
 686 {
 687         int ret;
 688
 689         ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 690         if (ret)
 691                 return ret;
 692         return ima_file_mmap(file, prot);
 693 }
 694
 695 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 696                             unsigned long prot)
 697 {
 698         return security_ops->file_mprotect(vma, reqprot, prot);
 699 }
 700
 701 int security_file_lock(struct file *file, unsigned int cmd)
 702 {
 703         return security_ops->file_lock(file, cmd);
 704 }
 705
 706 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 707 {
 708         return security_ops->file_fcntl(file, cmd, arg);
 709 }
 710
 711 int security_file_set_fowner(struct file *file)
 712 {
 713         return security_ops->file_set_fowner(file);
 714 }
 715
 716 int security_file_send_sigiotask(struct task_struct *tsk,
 717                                   struct fown_struct *fown, int sig)
 718 {
 719         return security_ops->file_send_sigiotask(tsk, fown, sig);
 720 }
 721
 722 int security_file_receive(struct file *file)
 723 {
 724         return security_ops->file_receive(file);
 725 }
 726
 727 int security_dentry_open(struct file *file, const struct cred *cred)
 728 {
 729         return security_ops->dentry_open(file, cred);
 730 }
 731
 732 int security_task_create(unsigned long clone_flags)
 733 {
 734         return security_ops->task_create(clone_flags);
 735 }
 736
 737 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 738 {
 739         return security_ops->cred_alloc_blank(cred, gfp);
 740 }
 741
 742 void security_cred_free(struct cred *cred)
 743 {
 744         security_ops->cred_free(cred);
 745 }
 746
 747 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 748 {
 749         return security_ops->cred_prepare(new, old, gfp);
 750 }
 751
 752 void security_commit_creds(struct cred *new, const struct cred *old)
 753 {
 754         security_ops->cred_commit(new, old);
 755 }
 756
 757 void security_transfer_creds(struct cred *new, const struct cred *old)
 758 {
 759         security_ops->cred_transfer(new, old);
 760 }
 761
 762 int security_kernel_act_as(struct cred *new, u32 secid)
 763 {
 764         return security_ops->kernel_act_as(new, secid);
 765 }
 766
 767 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 768 {
 769         return security_ops->kernel_create_files_as(new, inode);
 770 }
 771
 772 int security_kernel_module_request(char *kmod_name)
 773 {
 774         return security_ops->kernel_module_request(kmod_name);
 775 }
 776
 777 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
 778 {
 779         return security_ops->task_setuid(id0, id1, id2, flags);
 780 }
 781
 782 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 783                              int flags)
 784 {
 785         return security_ops->task_fix_setuid(new, old, flags);
 786 }
 787
 788 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags)
 789 {
 790         return security_ops->task_setgid(id0, id1, id2, flags);
 791 }
 792
 793 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 794 {
 795         return security_ops->task_setpgid(p, pgid);
 796 }
 797
 798 int security_task_getpgid(struct task_struct *p)
 799 {
 800         return security_ops->task_getpgid(p);
 801 }
 802
 803 int security_task_getsid(struct task_struct *p)
 804 {
 805         return security_ops->task_getsid(p);
 806 }
 807
 808 void security_task_getsecid(struct task_struct *p, u32 *secid)
 809 {
 810         security_ops->task_getsecid(p, secid);
 811 }
 812 EXPORT_SYMBOL(security_task_getsecid);
 813
 814 int security_task_setgroups(struct group_info *group_info)
 815 {
 816         return security_ops->task_setgroups(group_info);
 817 }
 818
 819 int security_task_setnice(struct task_struct *p, int nice)
 820 {
 821         return security_ops->task_setnice(p, nice);
 822 }
 823
 824 int security_task_setioprio(struct task_struct *p, int ioprio)
 825 {
 826         return security_ops->task_setioprio(p, ioprio);
 827 }
 828
 829 int security_task_getioprio(struct task_struct *p)
 830 {
 831         return security_ops->task_getioprio(p);
 832 }
 833
 834 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim)
 835 {
 836         return security_ops->task_setrlimit(resource, new_rlim);
 837 }
 838
 839 int security_task_setscheduler(struct task_struct *p,
 840                                 int policy, struct sched_param *lp)
 841 {
 842         return security_ops->task_setscheduler(p, policy, lp);
 843 }
 844
 845 int security_task_getscheduler(struct task_struct *p)
 846 {
 847         return security_ops->task_getscheduler(p);
 848 }
 849
 850 int security_task_movememory(struct task_struct *p)
 851 {
 852         return security_ops->task_movememory(p);
 853 }
 854
 855 int security_task_kill(struct task_struct *p, struct siginfo *info,
 856                         int sig, u32 secid)
 857 {
 858         return security_ops->task_kill(p, info, sig, secid);
 859 }
 860
 861 int security_task_wait(struct task_struct *p)
 862 {
 863         return security_ops->task_wait(p);
 864 }
 865
 866 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 867                          unsigned long arg4, unsigned long arg5)
 868 {
 869         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 870 }
 871
 872 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 873 {
 874         security_ops->task_to_inode(p, inode);
 875 }
 876
 877 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 878 {
 879         return security_ops->ipc_permission(ipcp, flag);
 880 }
 881
 882 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 883 {
 884         security_ops->ipc_getsecid(ipcp, secid);
 885 }
 886
 887 int security_msg_msg_alloc(struct msg_msg *msg)
 888 {
 889         return security_ops->msg_msg_alloc_security(msg);
 890 }
 891
 892 void security_msg_msg_free(struct msg_msg *msg)
 893 {
 894         security_ops->msg_msg_free_security(msg);
 895 }
 896
 897 int security_msg_queue_alloc(struct msg_queue *msq)
 898 {
 899         return security_ops->msg_queue_alloc_security(msq);
 900 }
 901
 902 void security_msg_queue_free(struct msg_queue *msq)
 903 {
 904         security_ops->msg_queue_free_security(msq);
 905 }
 906
 907 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 908 {
 909         return security_ops->msg_queue_associate(msq, msqflg);
 910 }
 911
 912 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 913 {
 914         return security_ops->msg_queue_msgctl(msq, cmd);
 915 }
 916
 917 int security_msg_queue_msgsnd(struct msg_queue *msq,
 918                                struct msg_msg *msg, int msqflg)
 919 {
 920         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 921 }
 922
 923 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 924                                struct task_struct *target, long type, int mode)
 925 {
 926         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 927 }
 928
 929 int security_shm_alloc(struct shmid_kernel *shp)
 930 {
 931         return security_ops->shm_alloc_security(shp);
 932 }
 933
 934 void security_shm_free(struct shmid_kernel *shp)
 935 {
 936         security_ops->shm_free_security(shp);
 937 }
 938
 939 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 940 {
 941         return security_ops->shm_associate(shp, shmflg);
 942 }
 943
 944 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 945 {
 946         return security_ops->shm_shmctl(shp, cmd);
 947 }
 948
 949 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 950 {
 951         return security_ops->shm_shmat(shp, shmaddr, shmflg);
 952 }
 953
 954 int security_sem_alloc(struct sem_array *sma)
 955 {
 956         return security_ops->sem_alloc_security(sma);
 957 }
 958
 959 void security_sem_free(struct sem_array *sma)
 960 {
 961         security_ops->sem_free_security(sma);
 962 }
 963
 964 int security_sem_associate(struct sem_array *sma, int semflg)
 965 {
 966         return security_ops->sem_associate(sma, semflg);
 967 }
 968
 969 int security_sem_semctl(struct sem_array *sma, int cmd)
 970 {
 971         return security_ops->sem_semctl(sma, cmd);
 972 }
 973
 974 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 975                         unsigned nsops, int alter)
 976 {
 977         return security_ops->sem_semop(sma, sops, nsops, alter);
 978 }
 979
 980 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 981 {
 982         if (unlikely(inode && IS_PRIVATE(inode)))
 983                 return;
 984         security_ops->d_instantiate(dentry, inode);
 985 }
 986 EXPORT_SYMBOL(security_d_instantiate);
 987
 988 int security_getprocattr(struct task_struct *p, char *name, char **value)
 989 {
 990         return security_ops->getprocattr(p, name, value);
 991 }
 992
 993 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 994 {
 995         return security_ops->setprocattr(p, name, value, size);
 996 }
 997
 998 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
 999 {
1000         return security_ops->netlink_send(sk, skb);
1001 }
1002
1003 int security_netlink_recv(struct sk_buff *skb, int cap)
1004 {
1005         return security_ops->netlink_recv(skb, cap);
1006 }
1007 EXPORT_SYMBOL(security_netlink_recv);
1008
1009 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1010 {
1011         return security_ops->secid_to_secctx(secid, secdata, seclen);
1012 }
1013 EXPORT_SYMBOL(security_secid_to_secctx);
1014
1015 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1016 {
1017         return security_ops->secctx_to_secid(secdata, seclen, secid);
1018 }
1019 EXPORT_SYMBOL(security_secctx_to_secid);
1020
1021 void security_release_secctx(char *secdata, u32 seclen)
1022 {
1023         security_ops->release_secctx(secdata, seclen);
1024 }
1025 EXPORT_SYMBOL(security_release_secctx);
1026
1027 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1028 {
1029         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1030 }
1031 EXPORT_SYMBOL(security_inode_notifysecctx);
1032
1033 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1034 {
1035         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1036 }
1037 EXPORT_SYMBOL(security_inode_setsecctx);
1038
1039 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1040 {
1041         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1042 }
1043 EXPORT_SYMBOL(security_inode_getsecctx);
1044
1045 #ifdef CONFIG_SECURITY_NETWORK
1046
1047 int security_unix_stream_connect(struct socket *sock, struct socket *other,
1048                                  struct sock *newsk)
1049 {
1050         return security_ops->unix_stream_connect(sock, other, newsk);
1051 }
1052 EXPORT_SYMBOL(security_unix_stream_connect);
1053
1054 int security_unix_may_send(struct socket *sock,  struct socket *other)
1055 {
1056         return security_ops->unix_may_send(sock, other);
1057 }
1058 EXPORT_SYMBOL(security_unix_may_send);
1059
1060 int security_socket_create(int family, int type, int protocol, int kern)
1061 {
1062         return security_ops->socket_create(family, type, protocol, kern);
1063 }
1064
1065 int security_socket_post_create(struct socket *sock, int family,
1066                                 int type, int protocol, int kern)
1067 {
1068         return security_ops->socket_post_create(sock, family, type,
1069                                                 protocol, kern);
1070 }
1071
1072 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1073 {
1074         return security_ops->socket_bind(sock, address, addrlen);
1075 }
1076
1077 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1078 {
1079         return security_ops->socket_connect(sock, address, addrlen);
1080 }
1081
1082 int security_socket_listen(struct socket *sock, int backlog)
1083 {
1084         return security_ops->socket_listen(sock, backlog);
1085 }
1086
1087 int security_socket_accept(struct socket *sock, struct socket *newsock)
1088 {
1089         return security_ops->socket_accept(sock, newsock);
1090 }
1091
1092 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1093 {
1094         return security_ops->socket_sendmsg(sock, msg, size);
1095 }
1096
1097 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1098                             int size, int flags)
1099 {
1100         return security_ops->socket_recvmsg(sock, msg, size, flags);
1101 }
1102
1103 int security_socket_getsockname(struct socket *sock)
1104 {
1105         return security_ops->socket_getsockname(sock);
1106 }
1107
1108 int security_socket_getpeername(struct socket *sock)
1109 {
1110         return security_ops->socket_getpeername(sock);
1111 }
1112
1113 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1114 {
1115         return security_ops->socket_getsockopt(sock, level, optname);
1116 }
1117
1118 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1119 {
1120         return security_ops->socket_setsockopt(sock, level, optname);
1121 }
1122
1123 int security_socket_shutdown(struct socket *sock, int how)
1124 {
1125         return security_ops->socket_shutdown(sock, how);
1126 }
1127
1128 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1129 {
1130         return security_ops->socket_sock_rcv_skb(sk, skb);
1131 }
1132 EXPORT_SYMBOL(security_sock_rcv_skb);
1133
1134 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1135                                       int __user *optlen, unsigned len)
1136 {
1137         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1138 }
1139
1140 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1141 {
1142         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1143 }
1144 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1145
1146 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1147 {
1148         return security_ops->sk_alloc_security(sk, family, priority);
1149 }
1150
1151 void security_sk_free(struct sock *sk)
1152 {
1153         security_ops->sk_free_security(sk);
1154 }
1155
1156 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1157 {
1158         security_ops->sk_clone_security(sk, newsk);
1159 }
1160
1161 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1162 {
1163         security_ops->sk_getsecid(sk, &fl->secid);
1164 }
1165 EXPORT_SYMBOL(security_sk_classify_flow);
1166
1167 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1168 {
1169         security_ops->req_classify_flow(req, fl);
1170 }
1171 EXPORT_SYMBOL(security_req_classify_flow);
1172
1173 void security_sock_graft(struct sock *sk, struct socket *parent)
1174 {
1175         security_ops->sock_graft(sk, parent);
1176 }
1177 EXPORT_SYMBOL(security_sock_graft);
1178
1179 int security_inet_conn_request(struct sock *sk,
1180                         struct sk_buff *skb, struct request_sock *req)
1181 {
1182         return security_ops->inet_conn_request(sk, skb, req);
1183 }
1184 EXPORT_SYMBOL(security_inet_conn_request);
1185
1186 void security_inet_csk_clone(struct sock *newsk,
1187                         const struct request_sock *req)
1188 {
1189         security_ops->inet_csk_clone(newsk, req);
1190 }
1191
1192 void security_inet_conn_established(struct sock *sk,
1193                         struct sk_buff *skb)
1194 {
1195         security_ops->inet_conn_established(sk, skb);
1196 }
1197
1198 int security_tun_dev_create(void)
1199 {
1200         return security_ops->tun_dev_create();
1201 }
1202 EXPORT_SYMBOL(security_tun_dev_create);
1203
1204 void security_tun_dev_post_create(struct sock *sk)
1205 {
1206         return security_ops->tun_dev_post_create(sk);
1207 }
1208 EXPORT_SYMBOL(security_tun_dev_post_create);
1209
1210 int security_tun_dev_attach(struct sock *sk)
1211 {
1212         return security_ops->tun_dev_attach(sk);
1213 }
1214 EXPORT_SYMBOL(security_tun_dev_attach);
1215
1216 #endif  /* CONFIG_SECURITY_NETWORK */
1217
1218 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1219
1220 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1221 {
1222         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1223 }
1224 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1225
1226 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1227                               struct xfrm_sec_ctx **new_ctxp)
1228 {
1229         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1230 }
1231
1232 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1233 {
1234         security_ops->xfrm_policy_free_security(ctx);
1235 }
1236 EXPORT_SYMBOL(security_xfrm_policy_free);
1237
1238 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1239 {
1240         return security_ops->xfrm_policy_delete_security(ctx);
1241 }
1242
1243 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1244 {
1245         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1246 }
1247 EXPORT_SYMBOL(security_xfrm_state_alloc);
1248
1249 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1250                                       struct xfrm_sec_ctx *polsec, u32 secid)
1251 {
1252         if (!polsec)
1253                 return 0;
1254         /*
1255          * We want the context to be taken from secid which is usually
1256          * from the sock.
1257          */
1258         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1259 }
1260
1261 int security_xfrm_state_delete(struct xfrm_state *x)
1262 {
1263         return security_ops->xfrm_state_delete_security(x);
1264 }
1265 EXPORT_SYMBOL(security_xfrm_state_delete);
1266
1267 void security_xfrm_state_free(struct xfrm_state *x)
1268 {
1269         security_ops->xfrm_state_free_security(x);
1270 }
1271
1272 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1273 {
1274         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1275 }
1276
1277 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1278                                        struct xfrm_policy *xp, struct flowi *fl)
1279 {
1280         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1281 }
1282
1283 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1284 {
1285         return security_ops->xfrm_decode_session(skb, secid, 1);
1286 }
1287
1288 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1289 {
1290         int rc = security_ops->xfrm_decode_session(skb, &fl->secid, 0);
1291
1292         BUG_ON(rc);
1293 }
1294 EXPORT_SYMBOL(security_skb_classify_flow);
1295
1296 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1297
1298 #ifdef CONFIG_KEYS
1299
1300 int security_key_alloc(struct key *key, const struct cred *cred,
1301                        unsigned long flags)
1302 {
1303         return security_ops->key_alloc(key, cred, flags);
1304 }
1305
1306 void security_key_free(struct key *key)
1307 {
1308         security_ops->key_free(key);
1309 }
1310
1311 int security_key_permission(key_ref_t key_ref,
1312                             const struct cred *cred, key_perm_t perm)
1313 {
1314         return security_ops->key_permission(key_ref, cred, perm);
1315 }
1316
1317 int security_key_getsecurity(struct key *key, char **_buffer)
1318 {
1319         return security_ops->key_getsecurity(key, _buffer);
1320 }
1321
1322 int security_key_session_to_parent(const struct cred *cred,
1323                                    const struct cred *parent_cred,
1324                                    struct key *key)
1325 {
1326         return security_ops->key_session_to_parent(cred, parent_cred, key);
1327 }
1328
1329 #endif  /* CONFIG_KEYS */
1330
1331 #ifdef CONFIG_AUDIT
1332
1333 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1334 {
1335         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1336 }
1337
1338 int security_audit_rule_known(struct audit_krule *krule)
1339 {
1340         return security_ops->audit_rule_known(krule);
1341 }
1342
1343 void security_audit_rule_free(void *lsmrule)
1344 {
1345         security_ops->audit_rule_free(lsmrule);
1346 }
1347
1348 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1349                               struct audit_context *actx)
1350 {
1351         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1352 }
1353
1354 #endif /* CONFIG_AUDIT */