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 EXPORT_SYMBOL(security_path_rmdir);
 377
 378 int security_path_unlink(struct path *dir, struct dentry *dentry)
 379 {
 380         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 381                 return 0;
 382         return security_ops->path_unlink(dir, dentry);
 383 }
 384 EXPORT_SYMBOL(security_path_unlink);
 385
 386 int security_path_symlink(struct path *dir, struct dentry *dentry,
 387                           const char *old_name)
 388 {
 389         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 390                 return 0;
 391         return security_ops->path_symlink(dir, dentry, old_name);
 392 }
 393 EXPORT_SYMBOL(security_path_symlink);
 394
 395 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
 396                        struct dentry *new_dentry)
 397 {
 398         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 399                 return 0;
 400         return security_ops->path_link(old_dentry, new_dir, new_dentry);
 401 }
 402 EXPORT_SYMBOL(security_path_link);
 403
 404 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
 405                          struct path *new_dir, struct dentry *new_dentry)
 406 {
 407         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 408                      (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 409                 return 0;
 410         return security_ops->path_rename(old_dir, old_dentry, new_dir,
 411                                          new_dentry);
 412 }
 413 EXPORT_SYMBOL(security_path_rename);
 414
 415 int security_path_truncate(struct path *path)
 416 {
 417         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 418                 return 0;
 419         return security_ops->path_truncate(path);
 420 }
 421 EXPORT_SYMBOL(security_path_truncate);
 422
 423 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
 424                         mode_t mode)
 425 {
 426         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 427                 return 0;
 428         return security_ops->path_chmod(dentry, mnt, mode);
 429 }
 430 EXPORT_SYMBOL(security_path_chmod);
 431
 432 int security_path_chown(struct path *path, uid_t uid, gid_t gid)
 433 {
 434         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 435                 return 0;
 436         return security_ops->path_chown(path, uid, gid);
 437 }
 438 EXPORT_SYMBOL(security_path_chown);
 439
 440 int security_path_chroot(struct path *path)
 441 {
 442         return security_ops->path_chroot(path);
 443 }
 444 #endif
 445
 446 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
 447 {
 448         if (unlikely(IS_PRIVATE(dir)))
 449                 return 0;
 450         return security_ops->inode_create(dir, dentry, mode);
 451 }
 452 EXPORT_SYMBOL_GPL(security_inode_create);
 453
 454 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 455                          struct dentry *new_dentry)
 456 {
 457         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 458                 return 0;
 459         return security_ops->inode_link(old_dentry, dir, new_dentry);
 460 }
 461
 462 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 463 {
 464         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 465                 return 0;
 466         return security_ops->inode_unlink(dir, dentry);
 467 }
 468
 469 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 470                             const char *old_name)
 471 {
 472         if (unlikely(IS_PRIVATE(dir)))
 473                 return 0;
 474         return security_ops->inode_symlink(dir, dentry, old_name);
 475 }
 476
 477 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 478 {
 479         if (unlikely(IS_PRIVATE(dir)))
 480                 return 0;
 481         return security_ops->inode_mkdir(dir, dentry, mode);
 482 }
 483 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 484
 485 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 486 {
 487         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 488                 return 0;
 489         return security_ops->inode_rmdir(dir, dentry);
 490 }
 491
 492 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 493 {
 494         if (unlikely(IS_PRIVATE(dir)))
 495                 return 0;
 496         return security_ops->inode_mknod(dir, dentry, mode, dev);
 497 }
 498
 499 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 500                            struct inode *new_dir, struct dentry *new_dentry)
 501 {
 502         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 503             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 504                 return 0;
 505         return security_ops->inode_rename(old_dir, old_dentry,
 506                                            new_dir, new_dentry);
 507 }
 508
 509 int security_inode_readlink(struct dentry *dentry)
 510 {
 511         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 512                 return 0;
 513         return security_ops->inode_readlink(dentry);
 514 }
 515 EXPORT_SYMBOL(security_inode_readlink);
 516
 517 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 518 {
 519         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 520                 return 0;
 521         return security_ops->inode_follow_link(dentry, nd);
 522 }
 523
 524 int security_inode_permission(struct inode *inode, int mask)
 525 {
 526         if (unlikely(IS_PRIVATE(inode)))
 527                 return 0;
 528         return security_ops->inode_permission(inode, mask, 0);
 529 }
 530 EXPORT_SYMBOL(security_inode_permission);
 531
 532 int security_inode_exec_permission(struct inode *inode, unsigned int flags)
 533 {
 534         if (unlikely(IS_PRIVATE(inode)))
 535                 return 0;
 536         return security_ops->inode_permission(inode, MAY_EXEC, flags);
 537 }
 538
 539 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 540 {
 541         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 542                 return 0;
 543         return security_ops->inode_setattr(dentry, attr);
 544 }
 545 EXPORT_SYMBOL_GPL(security_inode_setattr);
 546
 547 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 548 {
 549         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 550                 return 0;
 551         return security_ops->inode_getattr(mnt, dentry);
 552 }
 553
 554 int security_inode_setxattr(struct dentry *dentry, const char *name,
 555                             const void *value, size_t size, int flags)
 556 {
 557         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 558                 return 0;
 559         return security_ops->inode_setxattr(dentry, name, value, size, flags);
 560 }
 561
 562 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 563                                   const void *value, size_t size, int flags)
 564 {
 565         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 566                 return;
 567         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 568 }
 569
 570 int security_inode_getxattr(struct dentry *dentry, const char *name)
 571 {
 572         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 573                 return 0;
 574         return security_ops->inode_getxattr(dentry, name);
 575 }
 576
 577 int security_inode_listxattr(struct dentry *dentry)
 578 {
 579         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 580                 return 0;
 581         return security_ops->inode_listxattr(dentry);
 582 }
 583
 584 int security_inode_removexattr(struct dentry *dentry, const char *name)
 585 {
 586         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 587                 return 0;
 588         return security_ops->inode_removexattr(dentry, name);
 589 }
 590
 591 int security_inode_need_killpriv(struct dentry *dentry)
 592 {
 593         return security_ops->inode_need_killpriv(dentry);
 594 }
 595
 596 int security_inode_killpriv(struct dentry *dentry)
 597 {
 598         return security_ops->inode_killpriv(dentry);
 599 }
 600
 601 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 602 {
 603         if (unlikely(IS_PRIVATE(inode)))
 604                 return -EOPNOTSUPP;
 605         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 606 }
 607
 608 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 609 {
 610         if (unlikely(IS_PRIVATE(inode)))
 611                 return -EOPNOTSUPP;
 612         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 613 }
 614
 615 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 616 {
 617         if (unlikely(IS_PRIVATE(inode)))
 618                 return 0;
 619         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 620 }
 621
 622 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 623 {
 624         security_ops->inode_getsecid(inode, secid);
 625 }
 626
 627 int security_file_permission(struct file *file, int mask)
 628 {
 629         int ret;
 630
 631         ret = security_ops->file_permission(file, mask);
 632         if (ret)
 633                 return ret;
 634
 635         return fsnotify_perm(file, mask);
 636 }
 637 EXPORT_SYMBOL(security_file_permission);
 638
 639 int security_file_alloc(struct file *file)
 640 {
 641         return security_ops->file_alloc_security(file);
 642 }
 643
 644 void security_file_free(struct file *file)
 645 {
 646         security_ops->file_free_security(file);
 647 }
 648
 649 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 650 {
 651         return security_ops->file_ioctl(file, cmd, arg);
 652 }
 653
 654 int security_file_mmap(struct file *file, unsigned long reqprot,
 655                         unsigned long prot, unsigned long flags,
 656                         unsigned long addr, unsigned long addr_only)
 657 {
 658         int ret;
 659
 660         ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 661         if (ret)
 662                 return ret;
 663         return ima_file_mmap(file, prot);
 664 }
 665 EXPORT_SYMBOL(security_file_mmap);
 666
 667 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 668                             unsigned long prot)
 669 {
 670         return security_ops->file_mprotect(vma, reqprot, prot);
 671 }
 672
 673 int security_file_lock(struct file *file, unsigned int cmd)
 674 {
 675         return security_ops->file_lock(file, cmd);
 676 }
 677
 678 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 679 {
 680         return security_ops->file_fcntl(file, cmd, arg);
 681 }
 682
 683 int security_file_set_fowner(struct file *file)
 684 {
 685         return security_ops->file_set_fowner(file);
 686 }
 687
 688 int security_file_send_sigiotask(struct task_struct *tsk,
 689                                   struct fown_struct *fown, int sig)
 690 {
 691         return security_ops->file_send_sigiotask(tsk, fown, sig);
 692 }
 693
 694 int security_file_receive(struct file *file)
 695 {
 696         return security_ops->file_receive(file);
 697 }
 698
 699 int security_dentry_open(struct file *file, const struct cred *cred)
 700 {
 701         int ret;
 702
 703         ret = security_ops->dentry_open(file, cred);
 704         if (ret)
 705                 return ret;
 706
 707         return fsnotify_perm(file, MAY_OPEN);
 708 }
 709
 710 int security_task_create(unsigned long clone_flags)
 711 {
 712         return security_ops->task_create(clone_flags);
 713 }
 714
 715 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 716 {
 717         return security_ops->cred_alloc_blank(cred, gfp);
 718 }
 719
 720 void security_cred_free(struct cred *cred)
 721 {
 722         security_ops->cred_free(cred);
 723 }
 724
 725 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 726 {
 727         return security_ops->cred_prepare(new, old, gfp);
 728 }
 729
 730 void security_transfer_creds(struct cred *new, const struct cred *old)
 731 {
 732         security_ops->cred_transfer(new, old);
 733 }
 734
 735 int security_kernel_act_as(struct cred *new, u32 secid)
 736 {
 737         return security_ops->kernel_act_as(new, secid);
 738 }
 739
 740 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 741 {
 742         return security_ops->kernel_create_files_as(new, inode);
 743 }
 744
 745 int security_kernel_module_request(char *kmod_name)
 746 {
 747         return security_ops->kernel_module_request(kmod_name);
 748 }
 749
 750 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 751                              int flags)
 752 {
 753         return security_ops->task_fix_setuid(new, old, flags);
 754 }
 755
 756 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 757 {
 758         return security_ops->task_setpgid(p, pgid);
 759 }
 760
 761 int security_task_getpgid(struct task_struct *p)
 762 {
 763         return security_ops->task_getpgid(p);
 764 }
 765
 766 int security_task_getsid(struct task_struct *p)
 767 {
 768         return security_ops->task_getsid(p);
 769 }
 770
 771 void security_task_getsecid(struct task_struct *p, u32 *secid)
 772 {
 773         security_ops->task_getsecid(p, secid);
 774 }
 775 EXPORT_SYMBOL(security_task_getsecid);
 776
 777 int security_task_setnice(struct task_struct *p, int nice)
 778 {
 779         return security_ops->task_setnice(p, nice);
 780 }
 781
 782 int security_task_setioprio(struct task_struct *p, int ioprio)
 783 {
 784         return security_ops->task_setioprio(p, ioprio);
 785 }
 786
 787 int security_task_getioprio(struct task_struct *p)
 788 {
 789         return security_ops->task_getioprio(p);
 790 }
 791
 792 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 793                 struct rlimit *new_rlim)
 794 {
 795         return security_ops->task_setrlimit(p, resource, new_rlim);
 796 }
 797
 798 int security_task_setscheduler(struct task_struct *p)
 799 {
 800         return security_ops->task_setscheduler(p);
 801 }
 802
 803 int security_task_getscheduler(struct task_struct *p)
 804 {
 805         return security_ops->task_getscheduler(p);
 806 }
 807
 808 int security_task_movememory(struct task_struct *p)
 809 {
 810         return security_ops->task_movememory(p);
 811 }
 812
 813 int security_task_kill(struct task_struct *p, struct siginfo *info,
 814                         int sig, u32 secid)
 815 {
 816         return security_ops->task_kill(p, info, sig, secid);
 817 }
 818
 819 int security_task_wait(struct task_struct *p)
 820 {
 821         return security_ops->task_wait(p);
 822 }
 823
 824 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 825                          unsigned long arg4, unsigned long arg5)
 826 {
 827         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 828 }
 829
 830 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 831 {
 832         security_ops->task_to_inode(p, inode);
 833 }
 834
 835 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 836 {
 837         return security_ops->ipc_permission(ipcp, flag);
 838 }
 839
 840 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 841 {
 842         security_ops->ipc_getsecid(ipcp, secid);
 843 }
 844
 845 int security_msg_msg_alloc(struct msg_msg *msg)
 846 {
 847         return security_ops->msg_msg_alloc_security(msg);
 848 }
 849
 850 void security_msg_msg_free(struct msg_msg *msg)
 851 {
 852         security_ops->msg_msg_free_security(msg);
 853 }
 854
 855 int security_msg_queue_alloc(struct msg_queue *msq)
 856 {
 857         return security_ops->msg_queue_alloc_security(msq);
 858 }
 859
 860 void security_msg_queue_free(struct msg_queue *msq)
 861 {
 862         security_ops->msg_queue_free_security(msq);
 863 }
 864
 865 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 866 {
 867         return security_ops->msg_queue_associate(msq, msqflg);
 868 }
 869
 870 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 871 {
 872         return security_ops->msg_queue_msgctl(msq, cmd);
 873 }
 874
 875 int security_msg_queue_msgsnd(struct msg_queue *msq,
 876                                struct msg_msg *msg, int msqflg)
 877 {
 878         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 879 }
 880
 881 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 882                                struct task_struct *target, long type, int mode)
 883 {
 884         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 885 }
 886
 887 int security_shm_alloc(struct shmid_kernel *shp)
 888 {
 889         return security_ops->shm_alloc_security(shp);
 890 }
 891
 892 void security_shm_free(struct shmid_kernel *shp)
 893 {
 894         security_ops->shm_free_security(shp);
 895 }
 896
 897 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 898 {
 899         return security_ops->shm_associate(shp, shmflg);
 900 }
 901
 902 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 903 {
 904         return security_ops->shm_shmctl(shp, cmd);
 905 }
 906
 907 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 908 {
 909         return security_ops->shm_shmat(shp, shmaddr, shmflg);
 910 }
 911
 912 int security_sem_alloc(struct sem_array *sma)
 913 {
 914         return security_ops->sem_alloc_security(sma);
 915 }
 916
 917 void security_sem_free(struct sem_array *sma)
 918 {
 919         security_ops->sem_free_security(sma);
 920 }
 921
 922 int security_sem_associate(struct sem_array *sma, int semflg)
 923 {
 924         return security_ops->sem_associate(sma, semflg);
 925 }
 926
 927 int security_sem_semctl(struct sem_array *sma, int cmd)
 928 {
 929         return security_ops->sem_semctl(sma, cmd);
 930 }
 931
 932 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 933                         unsigned nsops, int alter)
 934 {
 935         return security_ops->sem_semop(sma, sops, nsops, alter);
 936 }
 937
 938 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 939 {
 940         if (unlikely(inode && IS_PRIVATE(inode)))
 941                 return;
 942         security_ops->d_instantiate(dentry, inode);
 943 }
 944 EXPORT_SYMBOL(security_d_instantiate);
 945
 946 int security_getprocattr(struct task_struct *p, char *name, char **value)
 947 {
 948         return security_ops->getprocattr(p, name, value);
 949 }
 950
 951 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 952 {
 953         return security_ops->setprocattr(p, name, value, size);
 954 }
 955
 956 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
 957 {
 958         return security_ops->netlink_send(sk, skb);
 959 }
 960
 961 int security_netlink_recv(struct sk_buff *skb, int cap)
 962 {
 963         return security_ops->netlink_recv(skb, cap);
 964 }
 965 EXPORT_SYMBOL(security_netlink_recv);
 966
 967 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
 968 {
 969         return security_ops->secid_to_secctx(secid, secdata, seclen);
 970 }
 971 EXPORT_SYMBOL(security_secid_to_secctx);
 972
 973 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 974 {
 975         return security_ops->secctx_to_secid(secdata, seclen, secid);
 976 }
 977 EXPORT_SYMBOL(security_secctx_to_secid);
 978
 979 void security_release_secctx(char *secdata, u32 seclen)
 980 {
 981         security_ops->release_secctx(secdata, seclen);
 982 }
 983 EXPORT_SYMBOL(security_release_secctx);
 984
 985 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
 986 {
 987         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
 988 }
 989 EXPORT_SYMBOL(security_inode_notifysecctx);
 990
 991 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
 992 {
 993         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
 994 }
 995 EXPORT_SYMBOL(security_inode_setsecctx);
 996
 997 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
 998 {
 999         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1000 }
1001 EXPORT_SYMBOL(security_inode_getsecctx);
1002
1003 #ifdef CONFIG_SECURITY_NETWORK
1004
1005 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1006 {
1007         return security_ops->unix_stream_connect(sock, other, newsk);
1008 }
1009 EXPORT_SYMBOL(security_unix_stream_connect);
1010
1011 int security_unix_may_send(struct socket *sock,  struct socket *other)
1012 {
1013         return security_ops->unix_may_send(sock, other);
1014 }
1015 EXPORT_SYMBOL(security_unix_may_send);
1016
1017 int security_socket_create(int family, int type, int protocol, int kern)
1018 {
1019         return security_ops->socket_create(family, type, protocol, kern);
1020 }
1021
1022 int security_socket_post_create(struct socket *sock, int family,
1023                                 int type, int protocol, int kern)
1024 {
1025         return security_ops->socket_post_create(sock, family, type,
1026                                                 protocol, kern);
1027 }
1028
1029 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1030 {
1031         return security_ops->socket_bind(sock, address, addrlen);
1032 }
1033
1034 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1035 {
1036         return security_ops->socket_connect(sock, address, addrlen);
1037 }
1038
1039 int security_socket_listen(struct socket *sock, int backlog)
1040 {
1041         return security_ops->socket_listen(sock, backlog);
1042 }
1043
1044 int security_socket_accept(struct socket *sock, struct socket *newsock)
1045 {
1046         return security_ops->socket_accept(sock, newsock);
1047 }
1048
1049 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1050 {
1051         return security_ops->socket_sendmsg(sock, msg, size);
1052 }
1053
1054 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1055                             int size, int flags)
1056 {
1057         return security_ops->socket_recvmsg(sock, msg, size, flags);
1058 }
1059
1060 int security_socket_getsockname(struct socket *sock)
1061 {
1062         return security_ops->socket_getsockname(sock);
1063 }
1064
1065 int security_socket_getpeername(struct socket *sock)
1066 {
1067         return security_ops->socket_getpeername(sock);
1068 }
1069
1070 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1071 {
1072         return security_ops->socket_getsockopt(sock, level, optname);
1073 }
1074
1075 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1076 {
1077         return security_ops->socket_setsockopt(sock, level, optname);
1078 }
1079
1080 int security_socket_shutdown(struct socket *sock, int how)
1081 {
1082         return security_ops->socket_shutdown(sock, how);
1083 }
1084
1085 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1086 {
1087         return security_ops->socket_sock_rcv_skb(sk, skb);
1088 }
1089 EXPORT_SYMBOL(security_sock_rcv_skb);
1090
1091 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1092                                       int __user *optlen, unsigned len)
1093 {
1094         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1095 }
1096
1097 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1098 {
1099         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1100 }
1101 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1102
1103 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1104 {
1105         return security_ops->sk_alloc_security(sk, family, priority);
1106 }
1107
1108 void security_sk_free(struct sock *sk)
1109 {
1110         security_ops->sk_free_security(sk);
1111 }
1112
1113 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1114 {
1115         security_ops->sk_clone_security(sk, newsk);
1116 }
1117
1118 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1119 {
1120         security_ops->sk_getsecid(sk, &fl->flowi_secid);
1121 }
1122 EXPORT_SYMBOL(security_sk_classify_flow);
1123
1124 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1125 {
1126         security_ops->req_classify_flow(req, fl);
1127 }
1128 EXPORT_SYMBOL(security_req_classify_flow);
1129
1130 void security_sock_graft(struct sock *sk, struct socket *parent)
1131 {
1132         security_ops->sock_graft(sk, parent);
1133 }
1134 EXPORT_SYMBOL(security_sock_graft);
1135
1136 int security_inet_conn_request(struct sock *sk,
1137                         struct sk_buff *skb, struct request_sock *req)
1138 {
1139         return security_ops->inet_conn_request(sk, skb, req);
1140 }
1141 EXPORT_SYMBOL(security_inet_conn_request);
1142
1143 void security_inet_csk_clone(struct sock *newsk,
1144                         const struct request_sock *req)
1145 {
1146         security_ops->inet_csk_clone(newsk, req);
1147 }
1148
1149 void security_inet_conn_established(struct sock *sk,
1150                         struct sk_buff *skb)
1151 {
1152         security_ops->inet_conn_established(sk, skb);
1153 }
1154
1155 int security_secmark_relabel_packet(u32 secid)
1156 {
1157         return security_ops->secmark_relabel_packet(secid);
1158 }
1159 EXPORT_SYMBOL(security_secmark_relabel_packet);
1160
1161 void security_secmark_refcount_inc(void)
1162 {
1163         security_ops->secmark_refcount_inc();
1164 }
1165 EXPORT_SYMBOL(security_secmark_refcount_inc);
1166
1167 void security_secmark_refcount_dec(void)
1168 {
1169         security_ops->secmark_refcount_dec();
1170 }
1171 EXPORT_SYMBOL(security_secmark_refcount_dec);
1172
1173 int security_tun_dev_create(void)
1174 {
1175         return security_ops->tun_dev_create();
1176 }
1177 EXPORT_SYMBOL(security_tun_dev_create);
1178
1179 void security_tun_dev_post_create(struct sock *sk)
1180 {
1181         return security_ops->tun_dev_post_create(sk);
1182 }
1183 EXPORT_SYMBOL(security_tun_dev_post_create);
1184
1185 int security_tun_dev_attach(struct sock *sk)
1186 {
1187         return security_ops->tun_dev_attach(sk);
1188 }
1189 EXPORT_SYMBOL(security_tun_dev_attach);
1190
1191 #endif  /* CONFIG_SECURITY_NETWORK */
1192
1193 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1194
1195 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1196 {
1197         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1198 }
1199 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1200
1201 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1202                               struct xfrm_sec_ctx **new_ctxp)
1203 {
1204         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1205 }
1206
1207 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1208 {
1209         security_ops->xfrm_policy_free_security(ctx);
1210 }
1211 EXPORT_SYMBOL(security_xfrm_policy_free);
1212
1213 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1214 {
1215         return security_ops->xfrm_policy_delete_security(ctx);
1216 }
1217
1218 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1219 {
1220         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1221 }
1222 EXPORT_SYMBOL(security_xfrm_state_alloc);
1223
1224 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1225                                       struct xfrm_sec_ctx *polsec, u32 secid)
1226 {
1227         if (!polsec)
1228                 return 0;
1229         /*
1230          * We want the context to be taken from secid which is usually
1231          * from the sock.
1232          */
1233         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1234 }
1235
1236 int security_xfrm_state_delete(struct xfrm_state *x)
1237 {
1238         return security_ops->xfrm_state_delete_security(x);
1239 }
1240 EXPORT_SYMBOL(security_xfrm_state_delete);
1241
1242 void security_xfrm_state_free(struct xfrm_state *x)
1243 {
1244         security_ops->xfrm_state_free_security(x);
1245 }
1246
1247 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1248 {
1249         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1250 }
1251
1252 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1253                                        struct xfrm_policy *xp,
1254                                        const struct flowi *fl)
1255 {
1256         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1257 }
1258
1259 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1260 {
1261         return security_ops->xfrm_decode_session(skb, secid, 1);
1262 }
1263
1264 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1265 {
1266         int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1267
1268         BUG_ON(rc);
1269 }
1270 EXPORT_SYMBOL(security_skb_classify_flow);
1271
1272 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1273
1274 #ifdef CONFIG_KEYS
1275
1276 int security_key_alloc(struct key *key, const struct cred *cred,
1277                        unsigned long flags)
1278 {
1279         return security_ops->key_alloc(key, cred, flags);
1280 }
1281
1282 void security_key_free(struct key *key)
1283 {
1284         security_ops->key_free(key);
1285 }
1286
1287 int security_key_permission(key_ref_t key_ref,
1288                             const struct cred *cred, key_perm_t perm)
1289 {
1290         return security_ops->key_permission(key_ref, cred, perm);
1291 }
1292
1293 int security_key_getsecurity(struct key *key, char **_buffer)
1294 {
1295         return security_ops->key_getsecurity(key, _buffer);
1296 }
1297
1298 #endif  /* CONFIG_KEYS */
1299
1300 #ifdef CONFIG_AUDIT
1301
1302 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1303 {
1304         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1305 }
1306
1307 int security_audit_rule_known(struct audit_krule *krule)
1308 {
1309         return security_ops->audit_rule_known(krule);
1310 }
1311
1312 void security_audit_rule_free(void *lsmrule)
1313 {
1314         security_ops->audit_rule_free(lsmrule);
1315 }
1316
1317 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1318                               struct audit_context *actx)
1319 {
1320         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1321 }
1322
1323 #endif /* CONFIG_AUDIT */