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 #if CONFIG_SECURITY_YAMA
  26 extern int yama_ptrace_access_check(struct task_struct *child,
  27                                     unsigned int mode);
  28 extern int yama_path_link(struct dentry *old_dentry, struct path *new_dir,
  29                           struct dentry *new_dentry);
  30 extern int yama_inode_follow_link(struct dentry *dentry,
  31                                   struct nameidata *nameidata);
  32 extern void yama_task_free(struct task_struct *task);
  33 extern int yama_task_prctl(int option, unsigned long arg2, unsigned long arg3,
  34                            unsigned long arg4, unsigned long arg5);
  35 #endif
  36
  37 /* things that live in capability.c */
  38 extern void __init security_fixup_ops(struct security_operations *ops);
  39
  40 static struct security_operations *security_ops;
  41 static struct security_operations default_security_ops = {
  42         .name   = "default",
  43 };
  44
  45 static inline int __init verify(struct security_operations *ops)
  46 {
  47         /* verify the security_operations structure exists */
  48         if (!ops)
  49                 return -EINVAL;
  50         security_fixup_ops(ops);
  51         return 0;
  52 }
  53
  54 static void __init do_security_initcalls(void)
  55 {
  56         initcall_t *call;
  57         call = __security_initcall_start;
  58         while (call < __security_initcall_end) {
  59                 (*call) ();
  60                 call++;
  61         }
  62 }
  63
  64 /**
  65  * security_init - initializes the security framework
  66  *
  67  * This should be called early in the kernel initialization sequence.
  68  */
  69 int __init security_init(void)
  70 {
  71         printk(KERN_INFO "Security Framework initialized\n");
  72
  73         security_fixup_ops(&default_security_ops);
  74         security_ops = &default_security_ops;
  75         do_security_initcalls();
  76
  77         return 0;
  78 }
  79
  80 void reset_security_ops(void)
  81 {
  82         security_ops = &default_security_ops;
  83 }
  84
  85 /* Save user chosen LSM */
  86 static int __init choose_lsm(char *str)
  87 {
  88         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  89         return 1;
  90 }
  91 __setup("security=", choose_lsm);
  92
  93 /**
  94  * security_module_enable - Load given security module on boot ?
  95  * @ops: a pointer to the struct security_operations that is to be checked.
  96  *
  97  * Each LSM must pass this method before registering its own operations
  98  * to avoid security registration races. This method may also be used
  99  * to check if your LSM is currently loaded during kernel initialization.
 100  *
 101  * Return true if:
 102  *      -The passed LSM is the one chosen by user at boot time,
 103  *      -or the passed LSM is configured as the default and the user did not
 104  *       choose an alternate LSM at boot time.
 105  * Otherwise, return false.
 106  */
 107 int __init security_module_enable(struct security_operations *ops)
 108 {
 109         return !strcmp(ops->name, chosen_lsm);
 110 }
 111
 112 /**
 113  * register_security - registers a security framework with the kernel
 114  * @ops: a pointer to the struct security_options that is to be registered
 115  *
 116  * This function allows a security module to register itself with the
 117  * kernel security subsystem.  Some rudimentary checking is done on the @ops
 118  * value passed to this function. You'll need to check first if your LSM
 119  * is allowed to register its @ops by calling security_module_enable(@ops).
 120  *
 121  * If there is already a security module registered with the kernel,
 122  * an error will be returned.  Otherwise %0 is returned on success.
 123  */
 124 int __init register_security(struct security_operations *ops)
 125 {
 126         if (verify(ops)) {
 127                 printk(KERN_DEBUG "%s could not verify "
 128                        "security_operations structure.\n", __func__);
 129                 return -EINVAL;
 130         }
 131
 132         if (security_ops != &default_security_ops)
 133                 return -EAGAIN;
 134
 135         security_ops = ops;
 136
 137         return 0;
 138 }
 139
 140 /* Security operations */
 141
 142 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 143 {
 144 #if CONFIG_SECURITY_YAMA
 145         int rc;
 146         rc = yama_ptrace_access_check(child, mode);
 147         if (rc || security_ops->ptrace_access_check == yama_ptrace_access_check)
 148                 return rc;
 149 #endif
 150         return security_ops->ptrace_access_check(child, mode);
 151 }
 152
 153 int security_ptrace_traceme(struct task_struct *parent)
 154 {
 155         return security_ops->ptrace_traceme(parent);
 156 }
 157
 158 int security_capget(struct task_struct *target,
 159                      kernel_cap_t *effective,
 160                      kernel_cap_t *inheritable,
 161                      kernel_cap_t *permitted)
 162 {
 163         return security_ops->capget(target, effective, inheritable, permitted);
 164 }
 165
 166 int security_capset(struct cred *new, const struct cred *old,
 167                     const kernel_cap_t *effective,
 168                     const kernel_cap_t *inheritable,
 169                     const kernel_cap_t *permitted)
 170 {
 171         return security_ops->capset(new, old,
 172                                     effective, inheritable, permitted);
 173 }
 174
 175 int security_capable(const struct cred *cred, int cap)
 176 {
 177         return security_ops->capable(current, cred, cap, SECURITY_CAP_AUDIT);
 178 }
 179
 180 int security_real_capable(struct task_struct *tsk, int cap)
 181 {
 182         const struct cred *cred;
 183         int ret;
 184
 185         cred = get_task_cred(tsk);
 186         ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_AUDIT);
 187         put_cred(cred);
 188         return ret;
 189 }
 190
 191 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
 192 {
 193         const struct cred *cred;
 194         int ret;
 195
 196         cred = get_task_cred(tsk);
 197         ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_NOAUDIT);
 198         put_cred(cred);
 199         return ret;
 200 }
 201
 202 int security_sysctl(struct ctl_table *table, int op)
 203 {
 204         return security_ops->sysctl(table, op);
 205 }
 206
 207 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 208 {
 209         return security_ops->quotactl(cmds, type, id, sb);
 210 }
 211
 212 int security_quota_on(struct dentry *dentry)
 213 {
 214         return security_ops->quota_on(dentry);
 215 }
 216
 217 int security_syslog(int type)
 218 {
 219         return security_ops->syslog(type);
 220 }
 221
 222 int security_settime(struct timespec *ts, struct timezone *tz)
 223 {
 224         return security_ops->settime(ts, tz);
 225 }
 226
 227 int security_vm_enough_memory(long pages)
 228 {
 229         WARN_ON(current->mm == NULL);
 230         return security_ops->vm_enough_memory(current->mm, pages);
 231 }
 232
 233 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 234 {
 235         WARN_ON(mm == NULL);
 236         return security_ops->vm_enough_memory(mm, pages);
 237 }
 238
 239 int security_vm_enough_memory_kern(long pages)
 240 {
 241         /* If current->mm is a kernel thread then we will pass NULL,
 242            for this specific case that is fine */
 243         return security_ops->vm_enough_memory(current->mm, pages);
 244 }
 245
 246 int security_bprm_set_creds(struct linux_binprm *bprm)
 247 {
 248         return security_ops->bprm_set_creds(bprm);
 249 }
 250
 251 int security_bprm_check(struct linux_binprm *bprm)
 252 {
 253         int ret;
 254
 255         ret = security_ops->bprm_check_security(bprm);
 256         if (ret)
 257                 return ret;
 258         return ima_bprm_check(bprm);
 259 }
 260
 261 void security_bprm_committing_creds(struct linux_binprm *bprm)
 262 {
 263         security_ops->bprm_committing_creds(bprm);
 264 }
 265
 266 void security_bprm_committed_creds(struct linux_binprm *bprm)
 267 {
 268         security_ops->bprm_committed_creds(bprm);
 269 }
 270
 271 int security_bprm_secureexec(struct linux_binprm *bprm)
 272 {
 273         return security_ops->bprm_secureexec(bprm);
 274 }
 275
 276 int security_sb_alloc(struct super_block *sb)
 277 {
 278         return security_ops->sb_alloc_security(sb);
 279 }
 280
 281 void security_sb_free(struct super_block *sb)
 282 {
 283         security_ops->sb_free_security(sb);
 284 }
 285
 286 int security_sb_copy_data(char *orig, char *copy)
 287 {
 288         return security_ops->sb_copy_data(orig, copy);
 289 }
 290 EXPORT_SYMBOL(security_sb_copy_data);
 291
 292 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 293 {
 294         return security_ops->sb_kern_mount(sb, flags, data);
 295 }
 296
 297 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 298 {
 299         return security_ops->sb_show_options(m, sb);
 300 }
 301
 302 int security_sb_statfs(struct dentry *dentry)
 303 {
 304         return security_ops->sb_statfs(dentry);
 305 }
 306
 307 int security_sb_mount(char *dev_name, struct path *path,
 308                        char *type, unsigned long flags, void *data)
 309 {
 310         return security_ops->sb_mount(dev_name, path, type, flags, data);
 311 }
 312
 313 int security_sb_umount(struct vfsmount *mnt, int flags)
 314 {
 315         return security_ops->sb_umount(mnt, flags);
 316 }
 317
 318 int security_sb_pivotroot(struct path *old_path, struct path *new_path)
 319 {
 320         return security_ops->sb_pivotroot(old_path, new_path);
 321 }
 322
 323 int security_sb_set_mnt_opts(struct super_block *sb,
 324                                 struct security_mnt_opts *opts)
 325 {
 326         return security_ops->sb_set_mnt_opts(sb, opts);
 327 }
 328 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 329
 330 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
 331                                 struct super_block *newsb)
 332 {
 333         security_ops->sb_clone_mnt_opts(oldsb, newsb);
 334 }
 335 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 336
 337 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 338 {
 339         return security_ops->sb_parse_opts_str(options, opts);
 340 }
 341 EXPORT_SYMBOL(security_sb_parse_opts_str);
 342
 343 int security_inode_alloc(struct inode *inode)
 344 {
 345         inode->i_security = NULL;
 346         return security_ops->inode_alloc_security(inode);
 347 }
 348
 349 void security_inode_free(struct inode *inode)
 350 {
 351         ima_inode_free(inode);
 352         security_ops->inode_free_security(inode);
 353 }
 354
 355 int security_inode_init_security(struct inode *inode, struct inode *dir,
 356                                   char **name, void **value, size_t *len)
 357 {
 358         if (unlikely(IS_PRIVATE(inode)))
 359                 return -EOPNOTSUPP;
 360         return security_ops->inode_init_security(inode, dir, name, value, len);
 361 }
 362 EXPORT_SYMBOL(security_inode_init_security);
 363
 364 #ifdef CONFIG_SECURITY_PATH
 365 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
 366                         unsigned int dev)
 367 {
 368         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 369                 return 0;
 370         return security_ops->path_mknod(dir, dentry, mode, dev);
 371 }
 372 EXPORT_SYMBOL(security_path_mknod);
 373
 374 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode)
 375 {
 376         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 377                 return 0;
 378         return security_ops->path_mkdir(dir, dentry, mode);
 379 }
 380 EXPORT_SYMBOL(security_path_mkdir);
 381
 382 int security_path_rmdir(struct path *dir, struct dentry *dentry)
 383 {
 384         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 385                 return 0;
 386         return security_ops->path_rmdir(dir, dentry);
 387 }
 388 EXPORT_SYMBOL(security_path_rmdir);
 389
 390 int security_path_unlink(struct path *dir, struct dentry *dentry)
 391 {
 392         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 393                 return 0;
 394         return security_ops->path_unlink(dir, dentry);
 395 }
 396 EXPORT_SYMBOL(security_path_unlink);
 397
 398 int security_path_symlink(struct path *dir, struct dentry *dentry,
 399                           const char *old_name)
 400 {
 401         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 402                 return 0;
 403         return security_ops->path_symlink(dir, dentry, old_name);
 404 }
 405 EXPORT_SYMBOL(security_path_symlink);
 406
 407 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
 408                        struct dentry *new_dentry)
 409 {
 410         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 411                 return 0;
 412 #if CONFIG_SECURITY_YAMA
 413         int rc = yama_path_link(old_dentry, new_dir, new_dentry);
 414         if (rc || security_ops->path_link == yama_path_link)
 415                 return rc;
 416 #endif
 417         return security_ops->path_link(old_dentry, new_dir, new_dentry);
 418 }
 419 EXPORT_SYMBOL(security_path_link);
 420
 421 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
 422                          struct path *new_dir, struct dentry *new_dentry)
 423 {
 424         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 425                      (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 426                 return 0;
 427         return security_ops->path_rename(old_dir, old_dentry, new_dir,
 428                                          new_dentry);
 429 }
 430 EXPORT_SYMBOL(security_path_rename);
 431
 432 int security_path_truncate(struct path *path)
 433 {
 434         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 435                 return 0;
 436         return security_ops->path_truncate(path);
 437 }
 438 EXPORT_SYMBOL(security_path_truncate);
 439
 440 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
 441                         mode_t mode)
 442 {
 443         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 444                 return 0;
 445         return security_ops->path_chmod(dentry, mnt, mode);
 446 }
 447 EXPORT_SYMBOL(security_path_chmod);
 448
 449 int security_path_chown(struct path *path, uid_t uid, gid_t gid)
 450 {
 451         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 452                 return 0;
 453         return security_ops->path_chown(path, uid, gid);
 454 }
 455 EXPORT_SYMBOL(security_path_chown);
 456
 457 int security_path_chroot(struct path *path)
 458 {
 459         return security_ops->path_chroot(path);
 460 }
 461 #endif
 462
 463 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
 464 {
 465         if (unlikely(IS_PRIVATE(dir)))
 466                 return 0;
 467         return security_ops->inode_create(dir, dentry, mode);
 468 }
 469 EXPORT_SYMBOL_GPL(security_inode_create);
 470
 471 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 472                          struct dentry *new_dentry)
 473 {
 474         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 475                 return 0;
 476         return security_ops->inode_link(old_dentry, dir, new_dentry);
 477 }
 478
 479 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 480 {
 481         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 482                 return 0;
 483         return security_ops->inode_unlink(dir, dentry);
 484 }
 485
 486 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 487                             const char *old_name)
 488 {
 489         if (unlikely(IS_PRIVATE(dir)))
 490                 return 0;
 491         return security_ops->inode_symlink(dir, dentry, old_name);
 492 }
 493
 494 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 495 {
 496         if (unlikely(IS_PRIVATE(dir)))
 497                 return 0;
 498         return security_ops->inode_mkdir(dir, dentry, mode);
 499 }
 500 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 501
 502 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 503 {
 504         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 505                 return 0;
 506         return security_ops->inode_rmdir(dir, dentry);
 507 }
 508
 509 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 510 {
 511         if (unlikely(IS_PRIVATE(dir)))
 512                 return 0;
 513         return security_ops->inode_mknod(dir, dentry, mode, dev);
 514 }
 515
 516 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 517                            struct inode *new_dir, struct dentry *new_dentry)
 518 {
 519         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 520             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 521                 return 0;
 522         return security_ops->inode_rename(old_dir, old_dentry,
 523                                            new_dir, new_dentry);
 524 }
 525
 526 int security_inode_readlink(struct dentry *dentry)
 527 {
 528         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 529                 return 0;
 530         return security_ops->inode_readlink(dentry);
 531 }
 532 EXPORT_SYMBOL(security_inode_readlink);
 533
 534 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 535 {
 536         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 537                 return 0;
 538 #if CONFIG_SECURITY_YAMA
 539         int rc = yama_inode_follow_link(dentry, nd);
 540         if (rc || security_ops->inode_follow_link == yama_inode_follow_link)
 541                 return rc;
 542 #endif
 543         return security_ops->inode_follow_link(dentry, nd);
 544 }
 545
 546 int security_inode_permission(struct inode *inode, int mask)
 547 {
 548         if (unlikely(IS_PRIVATE(inode)))
 549                 return 0;
 550         return security_ops->inode_permission(inode, mask);
 551 }
 552 EXPORT_SYMBOL(security_inode_permission);
 553
 554 int security_inode_exec_permission(struct inode *inode, unsigned int flags)
 555 {
 556         if (unlikely(IS_PRIVATE(inode)))
 557                 return 0;
 558         if (flags)
 559                 return -ECHILD;
 560         return security_ops->inode_permission(inode, MAY_EXEC);
 561 }
 562
 563 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 564 {
 565         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 566                 return 0;
 567         return security_ops->inode_setattr(dentry, attr);
 568 }
 569 EXPORT_SYMBOL_GPL(security_inode_setattr);
 570
 571 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 572 {
 573         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 574                 return 0;
 575         return security_ops->inode_getattr(mnt, dentry);
 576 }
 577
 578 int security_inode_setxattr(struct dentry *dentry, const char *name,
 579                             const void *value, size_t size, int flags)
 580 {
 581         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 582                 return 0;
 583         return security_ops->inode_setxattr(dentry, name, value, size, flags);
 584 }
 585
 586 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 587                                   const void *value, size_t size, int flags)
 588 {
 589         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 590                 return;
 591         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 592 }
 593
 594 int security_inode_getxattr(struct dentry *dentry, const char *name)
 595 {
 596         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 597                 return 0;
 598         return security_ops->inode_getxattr(dentry, name);
 599 }
 600
 601 int security_inode_listxattr(struct dentry *dentry)
 602 {
 603         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 604                 return 0;
 605         return security_ops->inode_listxattr(dentry);
 606 }
 607
 608 int security_inode_removexattr(struct dentry *dentry, const char *name)
 609 {
 610         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 611                 return 0;
 612         return security_ops->inode_removexattr(dentry, name);
 613 }
 614
 615 int security_inode_need_killpriv(struct dentry *dentry)
 616 {
 617         return security_ops->inode_need_killpriv(dentry);
 618 }
 619
 620 int security_inode_killpriv(struct dentry *dentry)
 621 {
 622         return security_ops->inode_killpriv(dentry);
 623 }
 624
 625 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 626 {
 627         if (unlikely(IS_PRIVATE(inode)))
 628                 return -EOPNOTSUPP;
 629         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 630 }
 631
 632 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 633 {
 634         if (unlikely(IS_PRIVATE(inode)))
 635                 return -EOPNOTSUPP;
 636         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 637 }
 638
 639 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 640 {
 641         if (unlikely(IS_PRIVATE(inode)))
 642                 return 0;
 643         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 644 }
 645
 646 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 647 {
 648         security_ops->inode_getsecid(inode, secid);
 649 }
 650
 651 int security_file_permission(struct file *file, int mask)
 652 {
 653         int ret;
 654
 655         ret = security_ops->file_permission(file, mask);
 656         if (ret)
 657                 return ret;
 658
 659         return fsnotify_perm(file, mask);
 660 }
 661 EXPORT_SYMBOL(security_file_permission);
 662
 663 int security_file_alloc(struct file *file)
 664 {
 665         return security_ops->file_alloc_security(file);
 666 }
 667
 668 void security_file_free(struct file *file)
 669 {
 670         security_ops->file_free_security(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 EXPORT_SYMBOL(security_file_mmap);
 690
 691 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 692                             unsigned long prot)
 693 {
 694         return security_ops->file_mprotect(vma, reqprot, prot);
 695 }
 696
 697 int security_file_lock(struct file *file, unsigned int cmd)
 698 {
 699         return security_ops->file_lock(file, cmd);
 700 }
 701
 702 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 703 {
 704         return security_ops->file_fcntl(file, cmd, arg);
 705 }
 706
 707 int security_file_set_fowner(struct file *file)
 708 {
 709         return security_ops->file_set_fowner(file);
 710 }
 711
 712 int security_file_send_sigiotask(struct task_struct *tsk,
 713                                   struct fown_struct *fown, int sig)
 714 {
 715         return security_ops->file_send_sigiotask(tsk, fown, sig);
 716 }
 717
 718 int security_file_receive(struct file *file)
 719 {
 720         return security_ops->file_receive(file);
 721 }
 722
 723 int security_dentry_open(struct file *file, const struct cred *cred)
 724 {
 725         int ret;
 726
 727         ret = security_ops->dentry_open(file, cred);
 728         if (ret)
 729                 return ret;
 730
 731         return fsnotify_perm(file, MAY_OPEN);
 732 }
 733
 734 int security_task_create(unsigned long clone_flags)
 735 {
 736         return security_ops->task_create(clone_flags);
 737 }
 738
 739 void security_task_free(struct task_struct *task)
 740 {
 741 #if CONFIG_SECURITY_YAMA
 742         yama_task_free(task);
 743         if (security_ops->task_free == yama_task_free)
 744                 return;
 745 #endif
 746         security_ops->task_free(task);
 747 }
 748
 749 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 750 {
 751         return security_ops->cred_alloc_blank(cred, gfp);
 752 }
 753
 754 void security_cred_free(struct cred *cred)
 755 {
 756         security_ops->cred_free(cred);
 757 }
 758
 759 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 760 {
 761         return security_ops->cred_prepare(new, old, gfp);
 762 }
 763
 764 void security_transfer_creds(struct cred *new, const struct cred *old)
 765 {
 766         security_ops->cred_transfer(new, old);
 767 }
 768
 769 int security_kernel_act_as(struct cred *new, u32 secid)
 770 {
 771         return security_ops->kernel_act_as(new, secid);
 772 }
 773
 774 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 775 {
 776         return security_ops->kernel_create_files_as(new, inode);
 777 }
 778
 779 int security_kernel_module_request(char *kmod_name)
 780 {
 781         return security_ops->kernel_module_request(kmod_name);
 782 }
 783
 784 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 785                              int flags)
 786 {
 787         return security_ops->task_fix_setuid(new, old, flags);
 788 }
 789
 790 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 791 {
 792         return security_ops->task_setpgid(p, pgid);
 793 }
 794
 795 int security_task_getpgid(struct task_struct *p)
 796 {
 797         return security_ops->task_getpgid(p);
 798 }
 799
 800 int security_task_getsid(struct task_struct *p)
 801 {
 802         return security_ops->task_getsid(p);
 803 }
 804
 805 void security_task_getsecid(struct task_struct *p, u32 *secid)
 806 {
 807         security_ops->task_getsecid(p, secid);
 808 }
 809 EXPORT_SYMBOL(security_task_getsecid);
 810
 811 int security_task_setnice(struct task_struct *p, int nice)
 812 {
 813         return security_ops->task_setnice(p, nice);
 814 }
 815
 816 int security_task_setioprio(struct task_struct *p, int ioprio)
 817 {
 818         return security_ops->task_setioprio(p, ioprio);
 819 }
 820
 821 int security_task_getioprio(struct task_struct *p)
 822 {
 823         return security_ops->task_getioprio(p);
 824 }
 825
 826 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 827                 struct rlimit *new_rlim)
 828 {
 829         return security_ops->task_setrlimit(p, resource, new_rlim);
 830 }
 831
 832 int security_task_setscheduler(struct task_struct *p)
 833 {
 834         return security_ops->task_setscheduler(p);
 835 }
 836
 837 int security_task_getscheduler(struct task_struct *p)
 838 {
 839         return security_ops->task_getscheduler(p);
 840 }
 841
 842 int security_task_movememory(struct task_struct *p)
 843 {
 844         return security_ops->task_movememory(p);
 845 }
 846
 847 int security_task_kill(struct task_struct *p, struct siginfo *info,
 848                         int sig, u32 secid)
 849 {
 850         return security_ops->task_kill(p, info, sig, secid);
 851 }
 852
 853 int security_task_wait(struct task_struct *p)
 854 {
 855         return security_ops->task_wait(p);
 856 }
 857
 858 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 859                          unsigned long arg4, unsigned long arg5)
 860 {
 861 #if CONFIG_SECURITY_YAMA
 862         int rc;
 863         rc = yama_task_prctl(option, arg2, arg3, arg4, arg5);
 864         if (rc != -ENOSYS || security_ops->task_prctl == yama_task_prctl)
 865                 return rc;
 866 #endif
 867         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 868 }
 869
 870 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 871 {
 872         security_ops->task_to_inode(p, inode);
 873 }
 874
 875 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 876 {
 877         return security_ops->ipc_permission(ipcp, flag);
 878 }
 879
 880 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 881 {
 882         security_ops->ipc_getsecid(ipcp, secid);
 883 }
 884
 885 int security_msg_msg_alloc(struct msg_msg *msg)
 886 {
 887         return security_ops->msg_msg_alloc_security(msg);
 888 }
 889
 890 void security_msg_msg_free(struct msg_msg *msg)
 891 {
 892         security_ops->msg_msg_free_security(msg);
 893 }
 894
 895 int security_msg_queue_alloc(struct msg_queue *msq)
 896 {
 897         return security_ops->msg_queue_alloc_security(msq);
 898 }
 899
 900 void security_msg_queue_free(struct msg_queue *msq)
 901 {
 902         security_ops->msg_queue_free_security(msq);
 903 }
 904
 905 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 906 {
 907         return security_ops->msg_queue_associate(msq, msqflg);
 908 }
 909
 910 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 911 {
 912         return security_ops->msg_queue_msgctl(msq, cmd);
 913 }
 914
 915 int security_msg_queue_msgsnd(struct msg_queue *msq,
 916                                struct msg_msg *msg, int msqflg)
 917 {
 918         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 919 }
 920
 921 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 922                                struct task_struct *target, long type, int mode)
 923 {
 924         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 925 }
 926
 927 int security_shm_alloc(struct shmid_kernel *shp)
 928 {
 929         return security_ops->shm_alloc_security(shp);
 930 }
 931
 932 void security_shm_free(struct shmid_kernel *shp)
 933 {
 934         security_ops->shm_free_security(shp);
 935 }
 936
 937 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 938 {
 939         return security_ops->shm_associate(shp, shmflg);
 940 }
 941
 942 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 943 {
 944         return security_ops->shm_shmctl(shp, cmd);
 945 }
 946
 947 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 948 {
 949         return security_ops->shm_shmat(shp, shmaddr, shmflg);
 950 }
 951
 952 int security_sem_alloc(struct sem_array *sma)
 953 {
 954         return security_ops->sem_alloc_security(sma);
 955 }
 956
 957 void security_sem_free(struct sem_array *sma)
 958 {
 959         security_ops->sem_free_security(sma);
 960 }
 961
 962 int security_sem_associate(struct sem_array *sma, int semflg)
 963 {
 964         return security_ops->sem_associate(sma, semflg);
 965 }
 966
 967 int security_sem_semctl(struct sem_array *sma, int cmd)
 968 {
 969         return security_ops->sem_semctl(sma, cmd);
 970 }
 971
 972 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 973                         unsigned nsops, int alter)
 974 {
 975         return security_ops->sem_semop(sma, sops, nsops, alter);
 976 }
 977
 978 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 979 {
 980         if (unlikely(inode && IS_PRIVATE(inode)))
 981                 return;
 982         security_ops->d_instantiate(dentry, inode);
 983 }
 984 EXPORT_SYMBOL(security_d_instantiate);
 985
 986 int security_getprocattr(struct task_struct *p, char *name, char **value)
 987 {
 988         return security_ops->getprocattr(p, name, value);
 989 }
 990
 991 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 992 {
 993         return security_ops->setprocattr(p, name, value, size);
 994 }
 995
 996 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
 997 {
 998         return security_ops->netlink_send(sk, skb);
 999 }
1000
1001 int security_netlink_recv(struct sk_buff *skb, int cap)
1002 {
1003         return security_ops->netlink_recv(skb, cap);
1004 }
1005 EXPORT_SYMBOL(security_netlink_recv);
1006
1007 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1008 {
1009         return security_ops->secid_to_secctx(secid, secdata, seclen);
1010 }
1011 EXPORT_SYMBOL(security_secid_to_secctx);
1012
1013 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1014 {
1015         return security_ops->secctx_to_secid(secdata, seclen, secid);
1016 }
1017 EXPORT_SYMBOL(security_secctx_to_secid);
1018
1019 void security_release_secctx(char *secdata, u32 seclen)
1020 {
1021         security_ops->release_secctx(secdata, seclen);
1022 }
1023 EXPORT_SYMBOL(security_release_secctx);
1024
1025 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1026 {
1027         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1028 }
1029 EXPORT_SYMBOL(security_inode_notifysecctx);
1030
1031 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1032 {
1033         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1034 }
1035 EXPORT_SYMBOL(security_inode_setsecctx);
1036
1037 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1038 {
1039         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1040 }
1041 EXPORT_SYMBOL(security_inode_getsecctx);
1042
1043 #ifdef CONFIG_SECURITY_NETWORK
1044
1045 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1046 {
1047         return security_ops->unix_stream_connect(sock, other, newsk);
1048 }
1049 EXPORT_SYMBOL(security_unix_stream_connect);
1050
1051 int security_unix_may_send(struct socket *sock,  struct socket *other)
1052 {
1053         return security_ops->unix_may_send(sock, other);
1054 }
1055 EXPORT_SYMBOL(security_unix_may_send);
1056
1057 int security_socket_create(int family, int type, int protocol, int kern)
1058 {
1059         return security_ops->socket_create(family, type, protocol, kern);
1060 }
1061
1062 int security_socket_post_create(struct socket *sock, int family,
1063                                 int type, int protocol, int kern)
1064 {
1065         return security_ops->socket_post_create(sock, family, type,
1066                                                 protocol, kern);
1067 }
1068
1069 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1070 {
1071         return security_ops->socket_bind(sock, address, addrlen);
1072 }
1073
1074 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1075 {
1076         return security_ops->socket_connect(sock, address, addrlen);
1077 }
1078
1079 int security_socket_listen(struct socket *sock, int backlog)
1080 {
1081         return security_ops->socket_listen(sock, backlog);
1082 }
1083
1084 int security_socket_accept(struct socket *sock, struct socket *newsock)
1085 {
1086         return security_ops->socket_accept(sock, newsock);
1087 }
1088
1089 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1090 {
1091         return security_ops->socket_sendmsg(sock, msg, size);
1092 }
1093
1094 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1095                             int size, int flags)
1096 {
1097         return security_ops->socket_recvmsg(sock, msg, size, flags);
1098 }
1099
1100 int security_socket_getsockname(struct socket *sock)
1101 {
1102         return security_ops->socket_getsockname(sock);
1103 }
1104
1105 int security_socket_getpeername(struct socket *sock)
1106 {
1107         return security_ops->socket_getpeername(sock);
1108 }
1109
1110 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1111 {
1112         return security_ops->socket_getsockopt(sock, level, optname);
1113 }
1114
1115 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1116 {
1117         return security_ops->socket_setsockopt(sock, level, optname);
1118 }
1119
1120 int security_socket_shutdown(struct socket *sock, int how)
1121 {
1122         return security_ops->socket_shutdown(sock, how);
1123 }
1124
1125 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1126 {
1127         return security_ops->socket_sock_rcv_skb(sk, skb);
1128 }
1129 EXPORT_SYMBOL(security_sock_rcv_skb);
1130
1131 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1132                                       int __user *optlen, unsigned len)
1133 {
1134         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1135 }
1136
1137 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1138 {
1139         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1140 }
1141 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1142
1143 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1144 {
1145         return security_ops->sk_alloc_security(sk, family, priority);
1146 }
1147
1148 void security_sk_free(struct sock *sk)
1149 {
1150         security_ops->sk_free_security(sk);
1151 }
1152
1153 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1154 {
1155         security_ops->sk_clone_security(sk, newsk);
1156 }
1157
1158 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1159 {
1160         security_ops->sk_getsecid(sk, &fl->secid);
1161 }
1162 EXPORT_SYMBOL(security_sk_classify_flow);
1163
1164 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1165 {
1166         security_ops->req_classify_flow(req, fl);
1167 }
1168 EXPORT_SYMBOL(security_req_classify_flow);
1169
1170 void security_sock_graft(struct sock *sk, struct socket *parent)
1171 {
1172         security_ops->sock_graft(sk, parent);
1173 }
1174 EXPORT_SYMBOL(security_sock_graft);
1175
1176 int security_inet_conn_request(struct sock *sk,
1177                         struct sk_buff *skb, struct request_sock *req)
1178 {
1179         return security_ops->inet_conn_request(sk, skb, req);
1180 }
1181 EXPORT_SYMBOL(security_inet_conn_request);
1182
1183 void security_inet_csk_clone(struct sock *newsk,
1184                         const struct request_sock *req)
1185 {
1186         security_ops->inet_csk_clone(newsk, req);
1187 }
1188
1189 void security_inet_conn_established(struct sock *sk,
1190                         struct sk_buff *skb)
1191 {
1192         security_ops->inet_conn_established(sk, skb);
1193 }
1194
1195 int security_secmark_relabel_packet(u32 secid)
1196 {
1197         return security_ops->secmark_relabel_packet(secid);
1198 }
1199 EXPORT_SYMBOL(security_secmark_relabel_packet);
1200
1201 void security_secmark_refcount_inc(void)
1202 {
1203         security_ops->secmark_refcount_inc();
1204 }
1205 EXPORT_SYMBOL(security_secmark_refcount_inc);
1206
1207 void security_secmark_refcount_dec(void)
1208 {
1209         security_ops->secmark_refcount_dec();
1210 }
1211 EXPORT_SYMBOL(security_secmark_refcount_dec);
1212
1213 int security_tun_dev_create(void)
1214 {
1215         return security_ops->tun_dev_create();
1216 }
1217 EXPORT_SYMBOL(security_tun_dev_create);
1218
1219 void security_tun_dev_post_create(struct sock *sk)
1220 {
1221         return security_ops->tun_dev_post_create(sk);
1222 }
1223 EXPORT_SYMBOL(security_tun_dev_post_create);
1224
1225 int security_tun_dev_attach(struct sock *sk)
1226 {
1227         return security_ops->tun_dev_attach(sk);
1228 }
1229 EXPORT_SYMBOL(security_tun_dev_attach);
1230
1231 #endif  /* CONFIG_SECURITY_NETWORK */
1232
1233 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1234
1235 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1236 {
1237         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1238 }
1239 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1240
1241 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1242                               struct xfrm_sec_ctx **new_ctxp)
1243 {
1244         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1245 }
1246
1247 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1248 {
1249         security_ops->xfrm_policy_free_security(ctx);
1250 }
1251 EXPORT_SYMBOL(security_xfrm_policy_free);
1252
1253 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1254 {
1255         return security_ops->xfrm_policy_delete_security(ctx);
1256 }
1257
1258 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1259 {
1260         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1261 }
1262 EXPORT_SYMBOL(security_xfrm_state_alloc);
1263
1264 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1265                                       struct xfrm_sec_ctx *polsec, u32 secid)
1266 {
1267         if (!polsec)
1268                 return 0;
1269         /*
1270          * We want the context to be taken from secid which is usually
1271          * from the sock.
1272          */
1273         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1274 }
1275
1276 int security_xfrm_state_delete(struct xfrm_state *x)
1277 {
1278         return security_ops->xfrm_state_delete_security(x);
1279 }
1280 EXPORT_SYMBOL(security_xfrm_state_delete);
1281
1282 void security_xfrm_state_free(struct xfrm_state *x)
1283 {
1284         security_ops->xfrm_state_free_security(x);
1285 }
1286
1287 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1288 {
1289         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1290 }
1291
1292 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1293                                        struct xfrm_policy *xp, struct flowi *fl)
1294 {
1295         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1296 }
1297
1298 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1299 {
1300         return security_ops->xfrm_decode_session(skb, secid, 1);
1301 }
1302
1303 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1304 {
1305         int rc = security_ops->xfrm_decode_session(skb, &fl->secid, 0);
1306
1307         BUG_ON(rc);
1308 }
1309 EXPORT_SYMBOL(security_skb_classify_flow);
1310
1311 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1312
1313 #ifdef CONFIG_KEYS
1314
1315 int security_key_alloc(struct key *key, const struct cred *cred,
1316                        unsigned long flags)
1317 {
1318         return security_ops->key_alloc(key, cred, flags);
1319 }
1320
1321 void security_key_free(struct key *key)
1322 {
1323         security_ops->key_free(key);
1324 }
1325
1326 int security_key_permission(key_ref_t key_ref,
1327                             const struct cred *cred, key_perm_t perm)
1328 {
1329         return security_ops->key_permission(key_ref, cred, perm);
1330 }
1331
1332 int security_key_getsecurity(struct key *key, char **_buffer)
1333 {
1334         return security_ops->key_getsecurity(key, _buffer);
1335 }
1336
1337 #endif  /* CONFIG_KEYS */
1338
1339 #ifdef CONFIG_AUDIT
1340
1341 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1342 {
1343         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1344 }
1345
1346 int security_audit_rule_known(struct audit_krule *krule)
1347 {
1348         return security_ops->audit_rule_known(krule);
1349 }
1350
1351 void security_audit_rule_free(void *lsmrule)
1352 {
1353         security_ops->audit_rule_free(lsmrule);
1354 }
1355
1356 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1357                               struct audit_context *actx)
1358 {
1359         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1360 }
1361
1362 #endif /* CONFIG_AUDIT */