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