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