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