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/integrity.h>
  20 #include <linux/ima.h>
  21 #include <linux/evm.h>
  22
  23 #define MAX_LSM_EVM_XATTR       2
  24
  25 /* Boot-time LSM user choice */
  26 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  27         CONFIG_DEFAULT_SECURITY;
  28
  29 /* things that live in capability.c */
  30 extern void __init security_fixup_ops(struct security_operations *ops);
  31
  32 static struct security_operations *security_ops;
  33 static struct security_operations default_security_ops = {
  34         .name   = "default",
  35 };
  36
  37 static inline int __init verify(struct security_operations *ops)
  38 {
  39         /* verify the security_operations structure exists */
  40         if (!ops)
  41                 return -EINVAL;
  42         security_fixup_ops(ops);
  43         return 0;
  44 }
  45
  46 static void __init do_security_initcalls(void)
  47 {
  48         initcall_t *call;
  49         call = __security_initcall_start;
  50         while (call < __security_initcall_end) {
  51                 (*call) ();
  52                 call++;
  53         }
  54 }
  55
  56 /**
  57  * security_init - initializes the security framework
  58  *
  59  * This should be called early in the kernel initialization sequence.
  60  */
  61 int __init security_init(void)
  62 {
  63         printk(KERN_INFO "Security Framework initialized\n");
  64
  65         security_fixup_ops(&default_security_ops);
  66         security_ops = &default_security_ops;
  67         do_security_initcalls();
  68
  69         return 0;
  70 }
  71
  72 void reset_security_ops(void)
  73 {
  74         security_ops = &default_security_ops;
  75 }
  76
  77 /* Save user chosen LSM */
  78 static int __init choose_lsm(char *str)
  79 {
  80         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  81         return 1;
  82 }
  83 __setup("security=", choose_lsm);
  84
  85 /**
  86  * security_module_enable - Load given security module on boot ?
  87  * @ops: a pointer to the struct security_operations that is to be checked.
  88  *
  89  * Each LSM must pass this method before registering its own operations
  90  * to avoid security registration races. This method may also be used
  91  * to check if your LSM is currently loaded during kernel initialization.
  92  *
  93  * Return true if:
  94  *      -The passed LSM is the one chosen by user at boot time,
  95  *      -or the passed LSM is configured as the default and the user did not
  96  *       choose an alternate LSM at boot time.
  97  * Otherwise, return false.
  98  */
  99 int __init security_module_enable(struct security_operations *ops)
 100 {
 101         return !strcmp(ops->name, chosen_lsm);
 102 }
 103
 104 /**
 105  * register_security - registers a security framework with the kernel
 106  * @ops: a pointer to the struct security_options that is to be registered
 107  *
 108  * This function allows a security module to register itself with the
 109  * kernel security subsystem.  Some rudimentary checking is done on the @ops
 110  * value passed to this function. You'll need to check first if your LSM
 111  * is allowed to register its @ops by calling security_module_enable(@ops).
 112  *
 113  * If there is already a security module registered with the kernel,
 114  * an error will be returned.  Otherwise %0 is returned on success.
 115  */
 116 int __init register_security(struct security_operations *ops)
 117 {
 118         if (verify(ops)) {
 119                 printk(KERN_DEBUG "%s could not verify "
 120                        "security_operations structure.\n", __func__);
 121                 return -EINVAL;
 122         }
 123
 124         if (security_ops != &default_security_ops)
 125                 return -EAGAIN;
 126
 127         security_ops = ops;
 128
 129         return 0;
 130 }
 131
 132 /* Security operations */
 133
 134 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 135 {
 136         return security_ops->ptrace_access_check(child, mode);
 137 }
 138
 139 int security_ptrace_traceme(struct task_struct *parent)
 140 {
 141         return security_ops->ptrace_traceme(parent);
 142 }
 143
 144 int security_capget(struct task_struct *target,
 145                      kernel_cap_t *effective,
 146                      kernel_cap_t *inheritable,
 147                      kernel_cap_t *permitted)
 148 {
 149         return security_ops->capget(target, effective, inheritable, permitted);
 150 }
 151
 152 int security_capset(struct cred *new, const struct cred *old,
 153                     const kernel_cap_t *effective,
 154                     const kernel_cap_t *inheritable,
 155                     const kernel_cap_t *permitted)
 156 {
 157         return security_ops->capset(new, old,
 158                                     effective, inheritable, permitted);
 159 }
 160
 161 int security_capable(struct user_namespace *ns, const struct cred *cred,
 162                      int cap)
 163 {
 164         return security_ops->capable(current, cred, ns, cap,
 165                                      SECURITY_CAP_AUDIT);
 166 }
 167
 168 int security_real_capable(struct task_struct *tsk, struct user_namespace *ns,
 169                           int cap)
 170 {
 171         const struct cred *cred;
 172         int ret;
 173
 174         cred = get_task_cred(tsk);
 175         ret = security_ops->capable(tsk, cred, ns, cap, SECURITY_CAP_AUDIT);
 176         put_cred(cred);
 177         return ret;
 178 }
 179
 180 int security_real_capable_noaudit(struct task_struct *tsk,
 181                                   struct user_namespace *ns, int cap)
 182 {
 183         const struct cred *cred;
 184         int ret;
 185
 186         cred = get_task_cred(tsk);
 187         ret = security_ops->capable(tsk, cred, ns, cap, SECURITY_CAP_NOAUDIT);
 188         put_cred(cred);
 189         return ret;
 190 }
 191
 192 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 193 {
 194         return security_ops->quotactl(cmds, type, id, sb);
 195 }
 196
 197 int security_quota_on(struct dentry *dentry)
 198 {
 199         return security_ops->quota_on(dentry);
 200 }
 201
 202 int security_syslog(int type)
 203 {
 204         return security_ops->syslog(type);
 205 }
 206
 207 int security_settime(const struct timespec *ts, const struct timezone *tz)
 208 {
 209         return security_ops->settime(ts, tz);
 210 }
 211
 212 int security_vm_enough_memory(long pages)
 213 {
 214         WARN_ON(current->mm == NULL);
 215         return security_ops->vm_enough_memory(current->mm, pages);
 216 }
 217
 218 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 219 {
 220         WARN_ON(mm == NULL);
 221         return security_ops->vm_enough_memory(mm, pages);
 222 }
 223
 224 int security_vm_enough_memory_kern(long pages)
 225 {
 226         /* If current->mm is a kernel thread then we will pass NULL,
 227            for this specific case that is fine */
 228         return security_ops->vm_enough_memory(current->mm, pages);
 229 }
 230
 231 int security_bprm_set_creds(struct linux_binprm *bprm)
 232 {
 233         return security_ops->bprm_set_creds(bprm);
 234 }
 235
 236 int security_bprm_check(struct linux_binprm *bprm)
 237 {
 238         int ret;
 239
 240         ret = security_ops->bprm_check_security(bprm);
 241         if (ret)
 242                 return ret;
 243         return ima_bprm_check(bprm);
 244 }
 245
 246 void security_bprm_committing_creds(struct linux_binprm *bprm)
 247 {
 248         security_ops->bprm_committing_creds(bprm);
 249 }
 250
 251 void security_bprm_committed_creds(struct linux_binprm *bprm)
 252 {
 253         security_ops->bprm_committed_creds(bprm);
 254 }
 255
 256 int security_bprm_secureexec(struct linux_binprm *bprm)
 257 {
 258         return security_ops->bprm_secureexec(bprm);
 259 }
 260
 261 int security_sb_alloc(struct super_block *sb)
 262 {
 263         return security_ops->sb_alloc_security(sb);
 264 }
 265
 266 void security_sb_free(struct super_block *sb)
 267 {
 268         security_ops->sb_free_security(sb);
 269 }
 270
 271 int security_sb_copy_data(char *orig, char *copy)
 272 {
 273         return security_ops->sb_copy_data(orig, copy);
 274 }
 275 EXPORT_SYMBOL(security_sb_copy_data);
 276
 277 int security_sb_remount(struct super_block *sb, void *data)
 278 {
 279         return security_ops->sb_remount(sb, data);
 280 }
 281
 282 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 283 {
 284         return security_ops->sb_kern_mount(sb, flags, data);
 285 }
 286
 287 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 288 {
 289         return security_ops->sb_show_options(m, sb);
 290 }
 291
 292 int security_sb_statfs(struct dentry *dentry)
 293 {
 294         return security_ops->sb_statfs(dentry);
 295 }
 296
 297 int security_sb_mount(char *dev_name, struct path *path,
 298                        char *type, unsigned long flags, void *data)
 299 {
 300         return security_ops->sb_mount(dev_name, path, type, flags, data);
 301 }
 302
 303 int security_sb_umount(struct vfsmount *mnt, int flags)
 304 {
 305         return security_ops->sb_umount(mnt, flags);
 306 }
 307
 308 int security_sb_pivotroot(struct path *old_path, struct path *new_path)
 309 {
 310         return security_ops->sb_pivotroot(old_path, new_path);
 311 }
 312
 313 int security_sb_set_mnt_opts(struct super_block *sb,
 314                                 struct security_mnt_opts *opts)
 315 {
 316         return security_ops->sb_set_mnt_opts(sb, opts);
 317 }
 318 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 319
 320 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
 321                                 struct super_block *newsb)
 322 {
 323         security_ops->sb_clone_mnt_opts(oldsb, newsb);
 324 }
 325 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 326
 327 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 328 {
 329         return security_ops->sb_parse_opts_str(options, opts);
 330 }
 331 EXPORT_SYMBOL(security_sb_parse_opts_str);
 332
 333 int security_inode_alloc(struct inode *inode)
 334 {
 335         inode->i_security = NULL;
 336         return security_ops->inode_alloc_security(inode);
 337 }
 338
 339 void security_inode_free(struct inode *inode)
 340 {
 341         integrity_inode_free(inode);
 342         security_ops->inode_free_security(inode);
 343 }
 344
 345 int security_inode_init_security(struct inode *inode, struct inode *dir,
 346                                  const struct qstr *qstr,
 347                                  const initxattrs initxattrs, void *fs_data)
 348 {
 349         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
 350         struct xattr *lsm_xattr, *evm_xattr, *xattr;
 351         int ret;
 352
 353         if (unlikely(IS_PRIVATE(inode)))
 354                 return -EOPNOTSUPP;
 355
 356         memset(new_xattrs, 0, sizeof new_xattrs);
 357         if (!initxattrs)
 358                 return security_ops->inode_init_security(inode, dir, qstr,
 359                                                          NULL, NULL, NULL);
 360         lsm_xattr = new_xattrs;
 361         ret = security_ops->inode_init_security(inode, dir, qstr,
 362                                                 &lsm_xattr->name,
 363                                                 &lsm_xattr->value,
 364                                                 &lsm_xattr->value_len);
 365         if (ret)
 366                 goto out;
 367
 368         evm_xattr = lsm_xattr + 1;
 369         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
 370         if (ret)
 371                 goto out;
 372         ret = initxattrs(inode, new_xattrs, fs_data);
 373 out:
 374         for (xattr = new_xattrs; xattr->name != NULL; xattr++) {
 375                 kfree(xattr->name);
 376                 kfree(xattr->value);
 377         }
 378         return (ret == -EOPNOTSUPP) ? 0 : ret;
 379 }
 380 EXPORT_SYMBOL(security_inode_init_security);
 381
 382 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 383                                      const struct qstr *qstr, char **name,
 384                                      void **value, size_t *len)
 385 {
 386         if (unlikely(IS_PRIVATE(inode)))
 387                 return -EOPNOTSUPP;
 388         return security_ops->inode_init_security(inode, dir, qstr, name, value,
 389                                                  len);
 390 }
 391 EXPORT_SYMBOL(security_old_inode_init_security);
 392
 393 #ifdef CONFIG_SECURITY_PATH
 394 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
 395                         unsigned int dev)
 396 {
 397         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 398                 return 0;
 399         return security_ops->path_mknod(dir, dentry, mode, dev);
 400 }
 401 EXPORT_SYMBOL(security_path_mknod);
 402
 403 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode)
 404 {
 405         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 406                 return 0;
 407         return security_ops->path_mkdir(dir, dentry, mode);
 408 }
 409 EXPORT_SYMBOL(security_path_mkdir);
 410
 411 int security_path_rmdir(struct path *dir, struct dentry *dentry)
 412 {
 413         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 414                 return 0;
 415         return security_ops->path_rmdir(dir, dentry);
 416 }
 417
 418 int security_path_unlink(struct path *dir, struct dentry *dentry)
 419 {
 420         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 421                 return 0;
 422         return security_ops->path_unlink(dir, dentry);
 423 }
 424 EXPORT_SYMBOL(security_path_unlink);
 425
 426 int security_path_symlink(struct path *dir, struct dentry *dentry,
 427                           const char *old_name)
 428 {
 429         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 430                 return 0;
 431         return security_ops->path_symlink(dir, dentry, old_name);
 432 }
 433
 434 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
 435                        struct dentry *new_dentry)
 436 {
 437         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 438                 return 0;
 439         return security_ops->path_link(old_dentry, new_dir, new_dentry);
 440 }
 441
 442 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
 443                          struct path *new_dir, struct dentry *new_dentry)
 444 {
 445         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 446                      (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 447                 return 0;
 448         return security_ops->path_rename(old_dir, old_dentry, new_dir,
 449                                          new_dentry);
 450 }
 451 EXPORT_SYMBOL(security_path_rename);
 452
 453 int security_path_truncate(struct path *path)
 454 {
 455         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 456                 return 0;
 457         return security_ops->path_truncate(path);
 458 }
 459
 460 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
 461                         mode_t mode)
 462 {
 463         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 464                 return 0;
 465         return security_ops->path_chmod(dentry, mnt, mode);
 466 }
 467
 468 int security_path_chown(struct path *path, uid_t uid, gid_t gid)
 469 {
 470         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 471                 return 0;
 472         return security_ops->path_chown(path, uid, gid);
 473 }
 474
 475 int security_path_chroot(struct path *path)
 476 {
 477         return security_ops->path_chroot(path);
 478 }
 479 #endif
 480
 481 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
 482 {
 483         if (unlikely(IS_PRIVATE(dir)))
 484                 return 0;
 485         return security_ops->inode_create(dir, dentry, mode);
 486 }
 487 EXPORT_SYMBOL_GPL(security_inode_create);
 488
 489 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 490                          struct dentry *new_dentry)
 491 {
 492         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 493                 return 0;
 494         return security_ops->inode_link(old_dentry, dir, new_dentry);
 495 }
 496
 497 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 498 {
 499         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 500                 return 0;
 501         return security_ops->inode_unlink(dir, dentry);
 502 }
 503
 504 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 505                             const char *old_name)
 506 {
 507         if (unlikely(IS_PRIVATE(dir)))
 508                 return 0;
 509         return security_ops->inode_symlink(dir, dentry, old_name);
 510 }
 511
 512 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 513 {
 514         if (unlikely(IS_PRIVATE(dir)))
 515                 return 0;
 516         return security_ops->inode_mkdir(dir, dentry, mode);
 517 }
 518 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 519
 520 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 521 {
 522         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 523                 return 0;
 524         return security_ops->inode_rmdir(dir, dentry);
 525 }
 526
 527 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 528 {
 529         if (unlikely(IS_PRIVATE(dir)))
 530                 return 0;
 531         return security_ops->inode_mknod(dir, dentry, mode, dev);
 532 }
 533
 534 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 535                            struct inode *new_dir, struct dentry *new_dentry)
 536 {
 537         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 538             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 539                 return 0;
 540         return security_ops->inode_rename(old_dir, old_dentry,
 541                                            new_dir, new_dentry);
 542 }
 543
 544 int security_inode_readlink(struct dentry *dentry)
 545 {
 546         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 547                 return 0;
 548         return security_ops->inode_readlink(dentry);
 549 }
 550
 551 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 552 {
 553         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 554                 return 0;
 555         return security_ops->inode_follow_link(dentry, nd);
 556 }
 557
 558 int security_inode_permission(struct inode *inode, int mask)
 559 {
 560         if (unlikely(IS_PRIVATE(inode)))
 561                 return 0;
 562         return security_ops->inode_permission(inode, mask, 0);
 563 }
 564
 565 int security_inode_exec_permission(struct inode *inode, unsigned int flags)
 566 {
 567         if (unlikely(IS_PRIVATE(inode)))
 568                 return 0;
 569         return security_ops->inode_permission(inode, MAY_EXEC, flags);
 570 }
 571
 572 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 573 {
 574         int ret;
 575
 576         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 577                 return 0;
 578         ret = security_ops->inode_setattr(dentry, attr);
 579         if (ret)
 580                 return ret;
 581         return evm_inode_setattr(dentry, attr);
 582 }
 583 EXPORT_SYMBOL_GPL(security_inode_setattr);
 584
 585 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 586 {
 587         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 588                 return 0;
 589         return security_ops->inode_getattr(mnt, dentry);
 590 }
 591
 592 int security_inode_setxattr(struct dentry *dentry, const char *name,
 593                             const void *value, size_t size, int flags)
 594 {
 595         int ret;
 596
 597         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 598                 return 0;
 599         ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
 600         if (ret)
 601                 return ret;
 602         return evm_inode_setxattr(dentry, name, value, size);
 603 }
 604
 605 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 606                                   const void *value, size_t size, int flags)
 607 {
 608         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 609                 return;
 610         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 611         evm_inode_post_setxattr(dentry, name, value, size);
 612 }
 613
 614 int security_inode_getxattr(struct dentry *dentry, const char *name)
 615 {
 616         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 617                 return 0;
 618         return security_ops->inode_getxattr(dentry, name);
 619 }
 620
 621 int security_inode_listxattr(struct dentry *dentry)
 622 {
 623         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 624                 return 0;
 625         return security_ops->inode_listxattr(dentry);
 626 }
 627
 628 int security_inode_removexattr(struct dentry *dentry, const char *name)
 629 {
 630         int ret;
 631
 632         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 633                 return 0;
 634         ret = security_ops->inode_removexattr(dentry, name);
 635         if (ret)
 636                 return ret;
 637         return evm_inode_removexattr(dentry, name);
 638 }
 639
 640 int security_inode_need_killpriv(struct dentry *dentry)
 641 {
 642         return security_ops->inode_need_killpriv(dentry);
 643 }
 644
 645 int security_inode_killpriv(struct dentry *dentry)
 646 {
 647         return security_ops->inode_killpriv(dentry);
 648 }
 649
 650 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 651 {
 652         if (unlikely(IS_PRIVATE(inode)))
 653                 return -EOPNOTSUPP;
 654         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 655 }
 656
 657 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 658 {
 659         if (unlikely(IS_PRIVATE(inode)))
 660                 return -EOPNOTSUPP;
 661         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 662 }
 663
 664 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 665 {
 666         if (unlikely(IS_PRIVATE(inode)))
 667                 return 0;
 668         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 669 }
 670
 671 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 672 {
 673         security_ops->inode_getsecid(inode, secid);
 674 }
 675
 676 int security_file_permission(struct file *file, int mask)
 677 {
 678         int ret;
 679
 680         ret = security_ops->file_permission(file, mask);
 681         if (ret)
 682                 return ret;
 683
 684         return fsnotify_perm(file, mask);
 685 }
 686
 687 int security_file_alloc(struct file *file)
 688 {
 689         return security_ops->file_alloc_security(file);
 690 }
 691
 692 void security_file_free(struct file *file)
 693 {
 694         security_ops->file_free_security(file);
 695 }
 696
 697 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 698 {
 699         return security_ops->file_ioctl(file, cmd, arg);
 700 }
 701
 702 int security_file_mmap(struct file *file, unsigned long reqprot,
 703                         unsigned long prot, unsigned long flags,
 704                         unsigned long addr, unsigned long addr_only)
 705 {
 706         int ret;
 707
 708         ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 709         if (ret)
 710                 return ret;
 711         return ima_file_mmap(file, prot);
 712 }
 713
 714 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 715                             unsigned long prot)
 716 {
 717         return security_ops->file_mprotect(vma, reqprot, prot);
 718 }
 719
 720 int security_file_lock(struct file *file, unsigned int cmd)
 721 {
 722         return security_ops->file_lock(file, cmd);
 723 }
 724
 725 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 726 {
 727         return security_ops->file_fcntl(file, cmd, arg);
 728 }
 729
 730 int security_file_set_fowner(struct file *file)
 731 {
 732         return security_ops->file_set_fowner(file);
 733 }
 734
 735 int security_file_send_sigiotask(struct task_struct *tsk,
 736                                   struct fown_struct *fown, int sig)
 737 {
 738         return security_ops->file_send_sigiotask(tsk, fown, sig);
 739 }
 740
 741 int security_file_receive(struct file *file)
 742 {
 743         return security_ops->file_receive(file);
 744 }
 745
 746 int security_dentry_open(struct file *file, const struct cred *cred)
 747 {
 748         int ret;
 749
 750         ret = security_ops->dentry_open(file, cred);
 751         if (ret)
 752                 return ret;
 753
 754         return fsnotify_perm(file, MAY_OPEN);
 755 }
 756
 757 int security_task_create(unsigned long clone_flags)
 758 {
 759         return security_ops->task_create(clone_flags);
 760 }
 761
 762 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 763 {
 764         return security_ops->cred_alloc_blank(cred, gfp);
 765 }
 766
 767 void security_cred_free(struct cred *cred)
 768 {
 769         security_ops->cred_free(cred);
 770 }
 771
 772 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 773 {
 774         return security_ops->cred_prepare(new, old, gfp);
 775 }
 776
 777 void security_transfer_creds(struct cred *new, const struct cred *old)
 778 {
 779         security_ops->cred_transfer(new, old);
 780 }
 781
 782 int security_kernel_act_as(struct cred *new, u32 secid)
 783 {
 784         return security_ops->kernel_act_as(new, secid);
 785 }
 786
 787 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 788 {
 789         return security_ops->kernel_create_files_as(new, inode);
 790 }
 791
 792 int security_kernel_module_request(char *kmod_name)
 793 {
 794         return security_ops->kernel_module_request(kmod_name);
 795 }
 796
 797 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 798                              int flags)
 799 {
 800         return security_ops->task_fix_setuid(new, old, flags);
 801 }
 802
 803 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 804 {
 805         return security_ops->task_setpgid(p, pgid);
 806 }
 807
 808 int security_task_getpgid(struct task_struct *p)
 809 {
 810         return security_ops->task_getpgid(p);
 811 }
 812
 813 int security_task_getsid(struct task_struct *p)
 814 {
 815         return security_ops->task_getsid(p);
 816 }
 817
 818 void security_task_getsecid(struct task_struct *p, u32 *secid)
 819 {
 820         security_ops->task_getsecid(p, secid);
 821 }
 822 EXPORT_SYMBOL(security_task_getsecid);
 823
 824 int security_task_setnice(struct task_struct *p, int nice)
 825 {
 826         return security_ops->task_setnice(p, nice);
 827 }
 828
 829 int security_task_setioprio(struct task_struct *p, int ioprio)
 830 {
 831         return security_ops->task_setioprio(p, ioprio);
 832 }
 833
 834 int security_task_getioprio(struct task_struct *p)
 835 {
 836         return security_ops->task_getioprio(p);
 837 }
 838
 839 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 840                 struct rlimit *new_rlim)
 841 {
 842         return security_ops->task_setrlimit(p, resource, new_rlim);
 843 }
 844
 845 int security_task_setscheduler(struct task_struct *p)
 846 {
 847         return security_ops->task_setscheduler(p);
 848 }
 849
 850 int security_task_getscheduler(struct task_struct *p)
 851 {
 852         return security_ops->task_getscheduler(p);
 853 }
 854
 855 int security_task_movememory(struct task_struct *p)
 856 {
 857         return security_ops->task_movememory(p);
 858 }
 859
 860 int security_task_kill(struct task_struct *p, struct siginfo *info,
 861                         int sig, u32 secid)
 862 {
 863         return security_ops->task_kill(p, info, sig, secid);
 864 }
 865
 866 int security_task_wait(struct task_struct *p)
 867 {
 868         return security_ops->task_wait(p);
 869 }
 870
 871 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 872                          unsigned long arg4, unsigned long arg5)
 873 {
 874         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 875 }
 876
 877 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 878 {
 879         security_ops->task_to_inode(p, inode);
 880 }
 881
 882 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 883 {
 884         return security_ops->ipc_permission(ipcp, flag);
 885 }
 886
 887 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 888 {
 889         security_ops->ipc_getsecid(ipcp, secid);
 890 }
 891
 892 int security_msg_msg_alloc(struct msg_msg *msg)
 893 {
 894         return security_ops->msg_msg_alloc_security(msg);
 895 }
 896
 897 void security_msg_msg_free(struct msg_msg *msg)
 898 {
 899         security_ops->msg_msg_free_security(msg);
 900 }
 901
 902 int security_msg_queue_alloc(struct msg_queue *msq)
 903 {
 904         return security_ops->msg_queue_alloc_security(msq);
 905 }
 906
 907 void security_msg_queue_free(struct msg_queue *msq)
 908 {
 909         security_ops->msg_queue_free_security(msq);
 910 }
 911
 912 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 913 {
 914         return security_ops->msg_queue_associate(msq, msqflg);
 915 }
 916
 917 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 918 {
 919         return security_ops->msg_queue_msgctl(msq, cmd);
 920 }
 921
 922 int security_msg_queue_msgsnd(struct msg_queue *msq,
 923                                struct msg_msg *msg, int msqflg)
 924 {
 925         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 926 }
 927
 928 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 929                                struct task_struct *target, long type, int mode)
 930 {
 931         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 932 }
 933
 934 int security_shm_alloc(struct shmid_kernel *shp)
 935 {
 936         return security_ops->shm_alloc_security(shp);
 937 }
 938
 939 void security_shm_free(struct shmid_kernel *shp)
 940 {
 941         security_ops->shm_free_security(shp);
 942 }
 943
 944 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 945 {
 946         return security_ops->shm_associate(shp, shmflg);
 947 }
 948
 949 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 950 {
 951         return security_ops->shm_shmctl(shp, cmd);
 952 }
 953
 954 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 955 {
 956         return security_ops->shm_shmat(shp, shmaddr, shmflg);
 957 }
 958
 959 int security_sem_alloc(struct sem_array *sma)
 960 {
 961         return security_ops->sem_alloc_security(sma);
 962 }
 963
 964 void security_sem_free(struct sem_array *sma)
 965 {
 966         security_ops->sem_free_security(sma);
 967 }
 968
 969 int security_sem_associate(struct sem_array *sma, int semflg)
 970 {
 971         return security_ops->sem_associate(sma, semflg);
 972 }
 973
 974 int security_sem_semctl(struct sem_array *sma, int cmd)
 975 {
 976         return security_ops->sem_semctl(sma, cmd);
 977 }
 978
 979 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 980                         unsigned nsops, int alter)
 981 {
 982         return security_ops->sem_semop(sma, sops, nsops, alter);
 983 }
 984
 985 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 986 {
 987         if (unlikely(inode && IS_PRIVATE(inode)))
 988                 return;
 989         security_ops->d_instantiate(dentry, inode);
 990 }
 991 EXPORT_SYMBOL(security_d_instantiate);
 992
 993 int security_getprocattr(struct task_struct *p, char *name, char **value)
 994 {
 995         return security_ops->getprocattr(p, name, value);
 996 }
 997
 998 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 999 {
1000         return security_ops->setprocattr(p, name, value, size);
1001 }
1002
1003 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1004 {
1005         return security_ops->netlink_send(sk, skb);
1006 }
1007
1008 int security_netlink_recv(struct sk_buff *skb, int cap)
1009 {
1010         return security_ops->netlink_recv(skb, cap);
1011 }
1012 EXPORT_SYMBOL(security_netlink_recv);
1013
1014 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1015 {
1016         return security_ops->secid_to_secctx(secid, secdata, seclen);
1017 }
1018 EXPORT_SYMBOL(security_secid_to_secctx);
1019
1020 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1021 {
1022         return security_ops->secctx_to_secid(secdata, seclen, secid);
1023 }
1024 EXPORT_SYMBOL(security_secctx_to_secid);
1025
1026 void security_release_secctx(char *secdata, u32 seclen)
1027 {
1028         security_ops->release_secctx(secdata, seclen);
1029 }
1030 EXPORT_SYMBOL(security_release_secctx);
1031
1032 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1033 {
1034         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1035 }
1036 EXPORT_SYMBOL(security_inode_notifysecctx);
1037
1038 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1039 {
1040         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1041 }
1042 EXPORT_SYMBOL(security_inode_setsecctx);
1043
1044 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1045 {
1046         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1047 }
1048 EXPORT_SYMBOL(security_inode_getsecctx);
1049
1050 #ifdef CONFIG_SECURITY_NETWORK
1051
1052 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1053 {
1054         return security_ops->unix_stream_connect(sock, other, newsk);
1055 }
1056 EXPORT_SYMBOL(security_unix_stream_connect);
1057
1058 int security_unix_may_send(struct socket *sock,  struct socket *other)
1059 {
1060         return security_ops->unix_may_send(sock, other);
1061 }
1062 EXPORT_SYMBOL(security_unix_may_send);
1063
1064 int security_socket_create(int family, int type, int protocol, int kern)
1065 {
1066         return security_ops->socket_create(family, type, protocol, kern);
1067 }
1068
1069 int security_socket_post_create(struct socket *sock, int family,
1070                                 int type, int protocol, int kern)
1071 {
1072         return security_ops->socket_post_create(sock, family, type,
1073                                                 protocol, kern);
1074 }
1075
1076 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1077 {
1078         return security_ops->socket_bind(sock, address, addrlen);
1079 }
1080
1081 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1082 {
1083         return security_ops->socket_connect(sock, address, addrlen);
1084 }
1085
1086 int security_socket_listen(struct socket *sock, int backlog)
1087 {
1088         return security_ops->socket_listen(sock, backlog);
1089 }
1090
1091 int security_socket_accept(struct socket *sock, struct socket *newsock)
1092 {
1093         return security_ops->socket_accept(sock, newsock);
1094 }
1095
1096 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1097 {
1098         return security_ops->socket_sendmsg(sock, msg, size);
1099 }
1100
1101 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1102                             int size, int flags)
1103 {
1104         return security_ops->socket_recvmsg(sock, msg, size, flags);
1105 }
1106
1107 int security_socket_getsockname(struct socket *sock)
1108 {
1109         return security_ops->socket_getsockname(sock);
1110 }
1111
1112 int security_socket_getpeername(struct socket *sock)
1113 {
1114         return security_ops->socket_getpeername(sock);
1115 }
1116
1117 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1118 {
1119         return security_ops->socket_getsockopt(sock, level, optname);
1120 }
1121
1122 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1123 {
1124         return security_ops->socket_setsockopt(sock, level, optname);
1125 }
1126
1127 int security_socket_shutdown(struct socket *sock, int how)
1128 {
1129         return security_ops->socket_shutdown(sock, how);
1130 }
1131
1132 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1133 {
1134         return security_ops->socket_sock_rcv_skb(sk, skb);
1135 }
1136 EXPORT_SYMBOL(security_sock_rcv_skb);
1137
1138 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1139                                       int __user *optlen, unsigned len)
1140 {
1141         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1142 }
1143
1144 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1145 {
1146         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1147 }
1148 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1149
1150 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1151 {
1152         return security_ops->sk_alloc_security(sk, family, priority);
1153 }
1154
1155 void security_sk_free(struct sock *sk)
1156 {
1157         security_ops->sk_free_security(sk);
1158 }
1159
1160 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1161 {
1162         security_ops->sk_clone_security(sk, newsk);
1163 }
1164
1165 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1166 {
1167         security_ops->sk_getsecid(sk, &fl->flowi_secid);
1168 }
1169 EXPORT_SYMBOL(security_sk_classify_flow);
1170
1171 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1172 {
1173         security_ops->req_classify_flow(req, fl);
1174 }
1175 EXPORT_SYMBOL(security_req_classify_flow);
1176
1177 void security_sock_graft(struct sock *sk, struct socket *parent)
1178 {
1179         security_ops->sock_graft(sk, parent);
1180 }
1181 EXPORT_SYMBOL(security_sock_graft);
1182
1183 int security_inet_conn_request(struct sock *sk,
1184                         struct sk_buff *skb, struct request_sock *req)
1185 {
1186         return security_ops->inet_conn_request(sk, skb, req);
1187 }
1188 EXPORT_SYMBOL(security_inet_conn_request);
1189
1190 void security_inet_csk_clone(struct sock *newsk,
1191                         const struct request_sock *req)
1192 {
1193         security_ops->inet_csk_clone(newsk, req);
1194 }
1195
1196 void security_inet_conn_established(struct sock *sk,
1197                         struct sk_buff *skb)
1198 {
1199         security_ops->inet_conn_established(sk, skb);
1200 }
1201
1202 int security_secmark_relabel_packet(u32 secid)
1203 {
1204         return security_ops->secmark_relabel_packet(secid);
1205 }
1206 EXPORT_SYMBOL(security_secmark_relabel_packet);
1207
1208 void security_secmark_refcount_inc(void)
1209 {
1210         security_ops->secmark_refcount_inc();
1211 }
1212 EXPORT_SYMBOL(security_secmark_refcount_inc);
1213
1214 void security_secmark_refcount_dec(void)
1215 {
1216         security_ops->secmark_refcount_dec();
1217 }
1218 EXPORT_SYMBOL(security_secmark_refcount_dec);
1219
1220 int security_tun_dev_create(void)
1221 {
1222         return security_ops->tun_dev_create();
1223 }
1224 EXPORT_SYMBOL(security_tun_dev_create);
1225
1226 void security_tun_dev_post_create(struct sock *sk)
1227 {
1228         return security_ops->tun_dev_post_create(sk);
1229 }
1230 EXPORT_SYMBOL(security_tun_dev_post_create);
1231
1232 int security_tun_dev_attach(struct sock *sk)
1233 {
1234         return security_ops->tun_dev_attach(sk);
1235 }
1236 EXPORT_SYMBOL(security_tun_dev_attach);
1237
1238 #endif  /* CONFIG_SECURITY_NETWORK */
1239
1240 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1241
1242 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1243 {
1244         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1245 }
1246 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1247
1248 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1249                               struct xfrm_sec_ctx **new_ctxp)
1250 {
1251         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1252 }
1253
1254 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1255 {
1256         security_ops->xfrm_policy_free_security(ctx);
1257 }
1258 EXPORT_SYMBOL(security_xfrm_policy_free);
1259
1260 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1261 {
1262         return security_ops->xfrm_policy_delete_security(ctx);
1263 }
1264
1265 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1266 {
1267         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1268 }
1269 EXPORT_SYMBOL(security_xfrm_state_alloc);
1270
1271 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1272                                       struct xfrm_sec_ctx *polsec, u32 secid)
1273 {
1274         if (!polsec)
1275                 return 0;
1276         /*
1277          * We want the context to be taken from secid which is usually
1278          * from the sock.
1279          */
1280         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1281 }
1282
1283 int security_xfrm_state_delete(struct xfrm_state *x)
1284 {
1285         return security_ops->xfrm_state_delete_security(x);
1286 }
1287 EXPORT_SYMBOL(security_xfrm_state_delete);
1288
1289 void security_xfrm_state_free(struct xfrm_state *x)
1290 {
1291         security_ops->xfrm_state_free_security(x);
1292 }
1293
1294 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1295 {
1296         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1297 }
1298
1299 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1300                                        struct xfrm_policy *xp,
1301                                        const struct flowi *fl)
1302 {
1303         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1304 }
1305
1306 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1307 {
1308         return security_ops->xfrm_decode_session(skb, secid, 1);
1309 }
1310
1311 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1312 {
1313         int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1314
1315         BUG_ON(rc);
1316 }
1317 EXPORT_SYMBOL(security_skb_classify_flow);
1318
1319 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1320
1321 #ifdef CONFIG_KEYS
1322
1323 int security_key_alloc(struct key *key, const struct cred *cred,
1324                        unsigned long flags)
1325 {
1326         return security_ops->key_alloc(key, cred, flags);
1327 }
1328
1329 void security_key_free(struct key *key)
1330 {
1331         security_ops->key_free(key);
1332 }
1333
1334 int security_key_permission(key_ref_t key_ref,
1335                             const struct cred *cred, key_perm_t perm)
1336 {
1337         return security_ops->key_permission(key_ref, cred, perm);
1338 }
1339
1340 int security_key_getsecurity(struct key *key, char **_buffer)
1341 {
1342         return security_ops->key_getsecurity(key, _buffer);
1343 }
1344
1345 #endif  /* CONFIG_KEYS */
1346
1347 #ifdef CONFIG_AUDIT
1348
1349 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1350 {
1351         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1352 }
1353
1354 int security_audit_rule_known(struct audit_krule *krule)
1355 {
1356         return security_ops->audit_rule_known(krule);
1357 }
1358
1359 void security_audit_rule_free(void *lsmrule)
1360 {
1361         security_ops->audit_rule_free(lsmrule);
1362 }
1363
1364 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1365                               struct audit_context *actx)
1366 {
1367         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1368 }
1369
1370 #endif /* CONFIG_AUDIT */