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);
 563 }
 564
 565 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 566 {
 567         int ret;
 568
 569         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 570                 return 0;
 571         ret = security_ops->inode_setattr(dentry, attr);
 572         if (ret)
 573                 return ret;
 574         return evm_inode_setattr(dentry, attr);
 575 }
 576 EXPORT_SYMBOL_GPL(security_inode_setattr);
 577
 578 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 579 {
 580         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 581                 return 0;
 582         return security_ops->inode_getattr(mnt, dentry);
 583 }
 584
 585 int security_inode_setxattr(struct dentry *dentry, const char *name,
 586                             const void *value, size_t size, int flags)
 587 {
 588         int ret;
 589
 590         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 591                 return 0;
 592         ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
 593         if (ret)
 594                 return ret;
 595         return evm_inode_setxattr(dentry, name, value, size);
 596 }
 597
 598 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 599                                   const void *value, size_t size, int flags)
 600 {
 601         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 602                 return;
 603         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 604         evm_inode_post_setxattr(dentry, name, value, size);
 605 }
 606
 607 int security_inode_getxattr(struct dentry *dentry, const char *name)
 608 {
 609         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 610                 return 0;
 611         return security_ops->inode_getxattr(dentry, name);
 612 }
 613
 614 int security_inode_listxattr(struct dentry *dentry)
 615 {
 616         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 617                 return 0;
 618         return security_ops->inode_listxattr(dentry);
 619 }
 620
 621 int security_inode_removexattr(struct dentry *dentry, const char *name)
 622 {
 623         int ret;
 624
 625         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 626                 return 0;
 627         ret = security_ops->inode_removexattr(dentry, name);
 628         if (ret)
 629                 return ret;
 630         return evm_inode_removexattr(dentry, name);
 631 }
 632
 633 int security_inode_need_killpriv(struct dentry *dentry)
 634 {
 635         return security_ops->inode_need_killpriv(dentry);
 636 }
 637
 638 int security_inode_killpriv(struct dentry *dentry)
 639 {
 640         return security_ops->inode_killpriv(dentry);
 641 }
 642
 643 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 644 {
 645         if (unlikely(IS_PRIVATE(inode)))
 646                 return -EOPNOTSUPP;
 647         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 648 }
 649
 650 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 651 {
 652         if (unlikely(IS_PRIVATE(inode)))
 653                 return -EOPNOTSUPP;
 654         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 655 }
 656
 657 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 658 {
 659         if (unlikely(IS_PRIVATE(inode)))
 660                 return 0;
 661         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 662 }
 663
 664 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 665 {
 666         security_ops->inode_getsecid(inode, secid);
 667 }
 668
 669 int security_file_permission(struct file *file, int mask)
 670 {
 671         int ret;
 672
 673         ret = security_ops->file_permission(file, mask);
 674         if (ret)
 675                 return ret;
 676
 677         return fsnotify_perm(file, mask);
 678 }
 679
 680 int security_file_alloc(struct file *file)
 681 {
 682         return security_ops->file_alloc_security(file);
 683 }
 684
 685 void security_file_free(struct file *file)
 686 {
 687         security_ops->file_free_security(file);
 688 }
 689
 690 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 691 {
 692         return security_ops->file_ioctl(file, cmd, arg);
 693 }
 694
 695 int security_file_mmap(struct file *file, unsigned long reqprot,
 696                         unsigned long prot, unsigned long flags,
 697                         unsigned long addr, unsigned long addr_only)
 698 {
 699         int ret;
 700
 701         ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 702         if (ret)
 703                 return ret;
 704         return ima_file_mmap(file, prot);
 705 }
 706
 707 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 708                             unsigned long prot)
 709 {
 710         return security_ops->file_mprotect(vma, reqprot, prot);
 711 }
 712
 713 int security_file_lock(struct file *file, unsigned int cmd)
 714 {
 715         return security_ops->file_lock(file, cmd);
 716 }
 717
 718 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 719 {
 720         return security_ops->file_fcntl(file, cmd, arg);
 721 }
 722
 723 int security_file_set_fowner(struct file *file)
 724 {
 725         return security_ops->file_set_fowner(file);
 726 }
 727
 728 int security_file_send_sigiotask(struct task_struct *tsk,
 729                                   struct fown_struct *fown, int sig)
 730 {
 731         return security_ops->file_send_sigiotask(tsk, fown, sig);
 732 }
 733
 734 int security_file_receive(struct file *file)
 735 {
 736         return security_ops->file_receive(file);
 737 }
 738
 739 int security_dentry_open(struct file *file, const struct cred *cred)
 740 {
 741         int ret;
 742
 743         ret = security_ops->dentry_open(file, cred);
 744         if (ret)
 745                 return ret;
 746
 747         return fsnotify_perm(file, MAY_OPEN);
 748 }
 749
 750 int security_task_create(unsigned long clone_flags)
 751 {
 752         return security_ops->task_create(clone_flags);
 753 }
 754
 755 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 756 {
 757         return security_ops->cred_alloc_blank(cred, gfp);
 758 }
 759
 760 void security_cred_free(struct cred *cred)
 761 {
 762         security_ops->cred_free(cred);
 763 }
 764
 765 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 766 {
 767         return security_ops->cred_prepare(new, old, gfp);
 768 }
 769
 770 void security_transfer_creds(struct cred *new, const struct cred *old)
 771 {
 772         security_ops->cred_transfer(new, old);
 773 }
 774
 775 int security_kernel_act_as(struct cred *new, u32 secid)
 776 {
 777         return security_ops->kernel_act_as(new, secid);
 778 }
 779
 780 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 781 {
 782         return security_ops->kernel_create_files_as(new, inode);
 783 }
 784
 785 int security_kernel_module_request(char *kmod_name)
 786 {
 787         return security_ops->kernel_module_request(kmod_name);
 788 }
 789
 790 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 791                              int flags)
 792 {
 793         return security_ops->task_fix_setuid(new, old, flags);
 794 }
 795
 796 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 797 {
 798         return security_ops->task_setpgid(p, pgid);
 799 }
 800
 801 int security_task_getpgid(struct task_struct *p)
 802 {
 803         return security_ops->task_getpgid(p);
 804 }
 805
 806 int security_task_getsid(struct task_struct *p)
 807 {
 808         return security_ops->task_getsid(p);
 809 }
 810
 811 void security_task_getsecid(struct task_struct *p, u32 *secid)
 812 {
 813         security_ops->task_getsecid(p, secid);
 814 }
 815 EXPORT_SYMBOL(security_task_getsecid);
 816
 817 int security_task_setnice(struct task_struct *p, int nice)
 818 {
 819         return security_ops->task_setnice(p, nice);
 820 }
 821
 822 int security_task_setioprio(struct task_struct *p, int ioprio)
 823 {
 824         return security_ops->task_setioprio(p, ioprio);
 825 }
 826
 827 int security_task_getioprio(struct task_struct *p)
 828 {
 829         return security_ops->task_getioprio(p);
 830 }
 831
 832 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 833                 struct rlimit *new_rlim)
 834 {
 835         return security_ops->task_setrlimit(p, resource, new_rlim);
 836 }
 837
 838 int security_task_setscheduler(struct task_struct *p)
 839 {
 840         return security_ops->task_setscheduler(p);
 841 }
 842
 843 int security_task_getscheduler(struct task_struct *p)
 844 {
 845         return security_ops->task_getscheduler(p);
 846 }
 847
 848 int security_task_movememory(struct task_struct *p)
 849 {
 850         return security_ops->task_movememory(p);
 851 }
 852
 853 int security_task_kill(struct task_struct *p, struct siginfo *info,
 854                         int sig, u32 secid)
 855 {
 856         return security_ops->task_kill(p, info, sig, secid);
 857 }
 858
 859 int security_task_wait(struct task_struct *p)
 860 {
 861         return security_ops->task_wait(p);
 862 }
 863
 864 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 865                          unsigned long arg4, unsigned long arg5)
 866 {
 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->flowi_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,
1294                                        const struct flowi *fl)
1295 {
1296         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1297 }
1298
1299 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1300 {
1301         return security_ops->xfrm_decode_session(skb, secid, 1);
1302 }
1303
1304 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1305 {
1306         int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1307
1308         BUG_ON(rc);
1309 }
1310 EXPORT_SYMBOL(security_skb_classify_flow);
1311
1312 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1313
1314 #ifdef CONFIG_KEYS
1315
1316 int security_key_alloc(struct key *key, const struct cred *cred,
1317                        unsigned long flags)
1318 {
1319         return security_ops->key_alloc(key, cred, flags);
1320 }
1321
1322 void security_key_free(struct key *key)
1323 {
1324         security_ops->key_free(key);
1325 }
1326
1327 int security_key_permission(key_ref_t key_ref,
1328                             const struct cred *cred, key_perm_t perm)
1329 {
1330         return security_ops->key_permission(key_ref, cred, perm);
1331 }
1332
1333 int security_key_getsecurity(struct key *key, char **_buffer)
1334 {
1335         return security_ops->key_getsecurity(key, _buffer);
1336 }
1337
1338 #endif  /* CONFIG_KEYS */
1339
1340 #ifdef CONFIG_AUDIT
1341
1342 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1343 {
1344         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1345 }
1346
1347 int security_audit_rule_known(struct audit_krule *krule)
1348 {
1349         return security_ops->audit_rule_known(krule);
1350 }
1351
1352 void security_audit_rule_free(void *lsmrule)
1353 {
1354         security_ops->audit_rule_free(lsmrule);
1355 }
1356
1357 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1358                               struct audit_context *actx)
1359 {
1360         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1361 }
1362
1363 #endif /* CONFIG_AUDIT */