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