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 0;
 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, int 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, int 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 dentry *dentry, struct vfsmount *mnt,
 458                         mode_t mode)
 459 {
 460         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 461                 return 0;
 462         return security_ops->path_chmod(dentry, mnt, mode);
 463 }
 464
 465 int security_path_chown(struct path *path, uid_t uid, gid_t gid)
 466 {
 467         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 468                 return 0;
 469         return security_ops->path_chown(path, uid, gid);
 470 }
 471
 472 int security_path_chroot(struct path *path)
 473 {
 474         return security_ops->path_chroot(path);
 475 }
 476 #endif
 477
 478 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
 479 {
 480         if (unlikely(IS_PRIVATE(dir)))
 481                 return 0;
 482         return security_ops->inode_create(dir, dentry, mode);
 483 }
 484 EXPORT_SYMBOL_GPL(security_inode_create);
 485
 486 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 487                          struct dentry *new_dentry)
 488 {
 489         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 490                 return 0;
 491         return security_ops->inode_link(old_dentry, dir, new_dentry);
 492 }
 493
 494 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 495 {
 496         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 497                 return 0;
 498         return security_ops->inode_unlink(dir, dentry);
 499 }
 500
 501 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 502                             const char *old_name)
 503 {
 504         if (unlikely(IS_PRIVATE(dir)))
 505                 return 0;
 506         return security_ops->inode_symlink(dir, dentry, old_name);
 507 }
 508
 509 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 510 {
 511         if (unlikely(IS_PRIVATE(dir)))
 512                 return 0;
 513         return security_ops->inode_mkdir(dir, dentry, mode);
 514 }
 515 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 516
 517 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 518 {
 519         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 520                 return 0;
 521         return security_ops->inode_rmdir(dir, dentry);
 522 }
 523
 524 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 525 {
 526         if (unlikely(IS_PRIVATE(dir)))
 527                 return 0;
 528         return security_ops->inode_mknod(dir, dentry, mode, dev);
 529 }
 530
 531 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 532                            struct inode *new_dir, struct dentry *new_dentry)
 533 {
 534         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 535             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 536                 return 0;
 537         return security_ops->inode_rename(old_dir, old_dentry,
 538                                            new_dir, new_dentry);
 539 }
 540
 541 int security_inode_readlink(struct dentry *dentry)
 542 {
 543         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 544                 return 0;
 545         return security_ops->inode_readlink(dentry);
 546 }
 547
 548 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 549 {
 550         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 551                 return 0;
 552         return security_ops->inode_follow_link(dentry, nd);
 553 }
 554
 555 int security_inode_permission(struct inode *inode, int mask)
 556 {
 557         if (unlikely(IS_PRIVATE(inode)))
 558                 return 0;
 559         return security_ops->inode_permission(inode, mask);
 560 }
 561
 562 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 563 {
 564         int ret;
 565
 566         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 567                 return 0;
 568         ret = security_ops->inode_setattr(dentry, attr);
 569         if (ret)
 570                 return ret;
 571         return evm_inode_setattr(dentry, attr);
 572 }
 573 EXPORT_SYMBOL_GPL(security_inode_setattr);
 574
 575 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 576 {
 577         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 578                 return 0;
 579         return security_ops->inode_getattr(mnt, dentry);
 580 }
 581
 582 int security_inode_setxattr(struct dentry *dentry, const char *name,
 583                             const void *value, size_t size, int flags)
 584 {
 585         int ret;
 586
 587         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 588                 return 0;
 589         ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
 590         if (ret)
 591                 return ret;
 592         return evm_inode_setxattr(dentry, name, value, size);
 593 }
 594
 595 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 596                                   const void *value, size_t size, int flags)
 597 {
 598         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 599                 return;
 600         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 601         evm_inode_post_setxattr(dentry, name, value, size);
 602 }
 603
 604 int security_inode_getxattr(struct dentry *dentry, const char *name)
 605 {
 606         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 607                 return 0;
 608         return security_ops->inode_getxattr(dentry, name);
 609 }
 610
 611 int security_inode_listxattr(struct dentry *dentry)
 612 {
 613         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 614                 return 0;
 615         return security_ops->inode_listxattr(dentry);
 616 }
 617
 618 int security_inode_removexattr(struct dentry *dentry, const char *name)
 619 {
 620         int ret;
 621
 622         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 623                 return 0;
 624         ret = security_ops->inode_removexattr(dentry, name);
 625         if (ret)
 626                 return ret;
 627         return evm_inode_removexattr(dentry, name);
 628 }
 629
 630 int security_inode_need_killpriv(struct dentry *dentry)
 631 {
 632         return security_ops->inode_need_killpriv(dentry);
 633 }
 634
 635 int security_inode_killpriv(struct dentry *dentry)
 636 {
 637         return security_ops->inode_killpriv(dentry);
 638 }
 639
 640 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 641 {
 642         if (unlikely(IS_PRIVATE(inode)))
 643                 return -EOPNOTSUPP;
 644         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 645 }
 646
 647 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 648 {
 649         if (unlikely(IS_PRIVATE(inode)))
 650                 return -EOPNOTSUPP;
 651         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 652 }
 653
 654 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 655 {
 656         if (unlikely(IS_PRIVATE(inode)))
 657                 return 0;
 658         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 659 }
 660
 661 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 662 {
 663         security_ops->inode_getsecid(inode, secid);
 664 }
 665
 666 int security_file_permission(struct file *file, int mask)
 667 {
 668         int ret;
 669
 670         ret = security_ops->file_permission(file, mask);
 671         if (ret)
 672                 return ret;
 673
 674         return fsnotify_perm(file, mask);
 675 }
 676
 677 int security_file_alloc(struct file *file)
 678 {
 679         return security_ops->file_alloc_security(file);
 680 }
 681
 682 void security_file_free(struct file *file)
 683 {
 684         security_ops->file_free_security(file);
 685 }
 686
 687 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 688 {
 689         return security_ops->file_ioctl(file, cmd, arg);
 690 }
 691
 692 int security_file_mmap(struct file *file, unsigned long reqprot,
 693                         unsigned long prot, unsigned long flags,
 694                         unsigned long addr, unsigned long addr_only)
 695 {
 696         int ret;
 697
 698         ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 699         if (ret)
 700                 return ret;
 701         return ima_file_mmap(file, prot);
 702 }
 703
 704 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 705                             unsigned long prot)
 706 {
 707         return security_ops->file_mprotect(vma, reqprot, prot);
 708 }
 709
 710 int security_file_lock(struct file *file, unsigned int cmd)
 711 {
 712         return security_ops->file_lock(file, cmd);
 713 }
 714
 715 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 716 {
 717         return security_ops->file_fcntl(file, cmd, arg);
 718 }
 719
 720 int security_file_set_fowner(struct file *file)
 721 {
 722         return security_ops->file_set_fowner(file);
 723 }
 724
 725 int security_file_send_sigiotask(struct task_struct *tsk,
 726                                   struct fown_struct *fown, int sig)
 727 {
 728         return security_ops->file_send_sigiotask(tsk, fown, sig);
 729 }
 730
 731 int security_file_receive(struct file *file)
 732 {
 733         return security_ops->file_receive(file);
 734 }
 735
 736 int security_dentry_open(struct file *file, const struct cred *cred)
 737 {
 738         int ret;
 739
 740         ret = security_ops->dentry_open(file, cred);
 741         if (ret)
 742                 return ret;
 743
 744         return fsnotify_perm(file, MAY_OPEN);
 745 }
 746
 747 int security_task_create(unsigned long clone_flags)
 748 {
 749         return security_ops->task_create(clone_flags);
 750 }
 751
 752 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 753 {
 754         return security_ops->cred_alloc_blank(cred, gfp);
 755 }
 756
 757 void security_cred_free(struct cred *cred)
 758 {
 759         security_ops->cred_free(cred);
 760 }
 761
 762 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 763 {
 764         return security_ops->cred_prepare(new, old, gfp);
 765 }
 766
 767 void security_transfer_creds(struct cred *new, const struct cred *old)
 768 {
 769         security_ops->cred_transfer(new, old);
 770 }
 771
 772 int security_kernel_act_as(struct cred *new, u32 secid)
 773 {
 774         return security_ops->kernel_act_as(new, secid);
 775 }
 776
 777 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 778 {
 779         return security_ops->kernel_create_files_as(new, inode);
 780 }
 781
 782 int security_kernel_module_request(char *kmod_name)
 783 {
 784         return security_ops->kernel_module_request(kmod_name);
 785 }
 786
 787 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 788                              int flags)
 789 {
 790         return security_ops->task_fix_setuid(new, old, flags);
 791 }
 792
 793 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 794 {
 795         return security_ops->task_setpgid(p, pgid);
 796 }
 797
 798 int security_task_getpgid(struct task_struct *p)
 799 {
 800         return security_ops->task_getpgid(p);
 801 }
 802
 803 int security_task_getsid(struct task_struct *p)
 804 {
 805         return security_ops->task_getsid(p);
 806 }
 807
 808 void security_task_getsecid(struct task_struct *p, u32 *secid)
 809 {
 810         security_ops->task_getsecid(p, secid);
 811 }
 812 EXPORT_SYMBOL(security_task_getsecid);
 813
 814 int security_task_setnice(struct task_struct *p, int nice)
 815 {
 816         return security_ops->task_setnice(p, nice);
 817 }
 818
 819 int security_task_setioprio(struct task_struct *p, int ioprio)
 820 {
 821         return security_ops->task_setioprio(p, ioprio);
 822 }
 823
 824 int security_task_getioprio(struct task_struct *p)
 825 {
 826         return security_ops->task_getioprio(p);
 827 }
 828
 829 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 830                 struct rlimit *new_rlim)
 831 {
 832         return security_ops->task_setrlimit(p, resource, new_rlim);
 833 }
 834
 835 int security_task_setscheduler(struct task_struct *p)
 836 {
 837         return security_ops->task_setscheduler(p);
 838 }
 839
 840 int security_task_getscheduler(struct task_struct *p)
 841 {
 842         return security_ops->task_getscheduler(p);
 843 }
 844
 845 int security_task_movememory(struct task_struct *p)
 846 {
 847         return security_ops->task_movememory(p);
 848 }
 849
 850 int security_task_kill(struct task_struct *p, struct siginfo *info,
 851                         int sig, u32 secid)
 852 {
 853         return security_ops->task_kill(p, info, sig, secid);
 854 }
 855
 856 int security_task_wait(struct task_struct *p)
 857 {
 858         return security_ops->task_wait(p);
 859 }
 860
 861 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 862                          unsigned long arg4, unsigned long arg5)
 863 {
 864         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 865 }
 866
 867 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 868 {
 869         security_ops->task_to_inode(p, inode);
 870 }
 871
 872 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 873 {
 874         return security_ops->ipc_permission(ipcp, flag);
 875 }
 876
 877 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 878 {
 879         security_ops->ipc_getsecid(ipcp, secid);
 880 }
 881
 882 int security_msg_msg_alloc(struct msg_msg *msg)
 883 {
 884         return security_ops->msg_msg_alloc_security(msg);
 885 }
 886
 887 void security_msg_msg_free(struct msg_msg *msg)
 888 {
 889         security_ops->msg_msg_free_security(msg);
 890 }
 891
 892 int security_msg_queue_alloc(struct msg_queue *msq)
 893 {
 894         return security_ops->msg_queue_alloc_security(msq);
 895 }
 896
 897 void security_msg_queue_free(struct msg_queue *msq)
 898 {
 899         security_ops->msg_queue_free_security(msq);
 900 }
 901
 902 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 903 {
 904         return security_ops->msg_queue_associate(msq, msqflg);
 905 }
 906
 907 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 908 {
 909         return security_ops->msg_queue_msgctl(msq, cmd);
 910 }
 911
 912 int security_msg_queue_msgsnd(struct msg_queue *msq,
 913                                struct msg_msg *msg, int msqflg)
 914 {
 915         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 916 }
 917
 918 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 919                                struct task_struct *target, long type, int mode)
 920 {
 921         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 922 }
 923
 924 int security_shm_alloc(struct shmid_kernel *shp)
 925 {
 926         return security_ops->shm_alloc_security(shp);
 927 }
 928
 929 void security_shm_free(struct shmid_kernel *shp)
 930 {
 931         security_ops->shm_free_security(shp);
 932 }
 933
 934 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 935 {
 936         return security_ops->shm_associate(shp, shmflg);
 937 }
 938
 939 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 940 {
 941         return security_ops->shm_shmctl(shp, cmd);
 942 }
 943
 944 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 945 {
 946         return security_ops->shm_shmat(shp, shmaddr, shmflg);
 947 }
 948
 949 int security_sem_alloc(struct sem_array *sma)
 950 {
 951         return security_ops->sem_alloc_security(sma);
 952 }
 953
 954 void security_sem_free(struct sem_array *sma)
 955 {
 956         security_ops->sem_free_security(sma);
 957 }
 958
 959 int security_sem_associate(struct sem_array *sma, int semflg)
 960 {
 961         return security_ops->sem_associate(sma, semflg);
 962 }
 963
 964 int security_sem_semctl(struct sem_array *sma, int cmd)
 965 {
 966         return security_ops->sem_semctl(sma, cmd);
 967 }
 968
 969 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 970                         unsigned nsops, int alter)
 971 {
 972         return security_ops->sem_semop(sma, sops, nsops, alter);
 973 }
 974
 975 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 976 {
 977         if (unlikely(inode && IS_PRIVATE(inode)))
 978                 return;
 979         security_ops->d_instantiate(dentry, inode);
 980 }
 981 EXPORT_SYMBOL(security_d_instantiate);
 982
 983 int security_getprocattr(struct task_struct *p, char *name, char **value)
 984 {
 985         return security_ops->getprocattr(p, name, value);
 986 }
 987
 988 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 989 {
 990         return security_ops->setprocattr(p, name, value, size);
 991 }
 992
 993 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
 994 {
 995         return security_ops->netlink_send(sk, skb);
 996 }
 997
 998 int security_netlink_recv(struct sk_buff *skb, int cap)
 999 {
1000         return security_ops->netlink_recv(skb, cap);
1001 }
1002 EXPORT_SYMBOL(security_netlink_recv);
1003
1004 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1005 {
1006         return security_ops->secid_to_secctx(secid, secdata, seclen);
1007 }
1008 EXPORT_SYMBOL(security_secid_to_secctx);
1009
1010 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1011 {
1012         return security_ops->secctx_to_secid(secdata, seclen, secid);
1013 }
1014 EXPORT_SYMBOL(security_secctx_to_secid);
1015
1016 void security_release_secctx(char *secdata, u32 seclen)
1017 {
1018         security_ops->release_secctx(secdata, seclen);
1019 }
1020 EXPORT_SYMBOL(security_release_secctx);
1021
1022 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1023 {
1024         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1025 }
1026 EXPORT_SYMBOL(security_inode_notifysecctx);
1027
1028 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1029 {
1030         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1031 }
1032 EXPORT_SYMBOL(security_inode_setsecctx);
1033
1034 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1035 {
1036         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1037 }
1038 EXPORT_SYMBOL(security_inode_getsecctx);
1039
1040 #ifdef CONFIG_SECURITY_NETWORK
1041
1042 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1043 {
1044         return security_ops->unix_stream_connect(sock, other, newsk);
1045 }
1046 EXPORT_SYMBOL(security_unix_stream_connect);
1047
1048 int security_unix_may_send(struct socket *sock,  struct socket *other)
1049 {
1050         return security_ops->unix_may_send(sock, other);
1051 }
1052 EXPORT_SYMBOL(security_unix_may_send);
1053
1054 int security_socket_create(int family, int type, int protocol, int kern)
1055 {
1056         return security_ops->socket_create(family, type, protocol, kern);
1057 }
1058
1059 int security_socket_post_create(struct socket *sock, int family,
1060                                 int type, int protocol, int kern)
1061 {
1062         return security_ops->socket_post_create(sock, family, type,
1063                                                 protocol, kern);
1064 }
1065
1066 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1067 {
1068         return security_ops->socket_bind(sock, address, addrlen);
1069 }
1070
1071 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1072 {
1073         return security_ops->socket_connect(sock, address, addrlen);
1074 }
1075
1076 int security_socket_listen(struct socket *sock, int backlog)
1077 {
1078         return security_ops->socket_listen(sock, backlog);
1079 }
1080
1081 int security_socket_accept(struct socket *sock, struct socket *newsock)
1082 {
1083         return security_ops->socket_accept(sock, newsock);
1084 }
1085
1086 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1087 {
1088         return security_ops->socket_sendmsg(sock, msg, size);
1089 }
1090
1091 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1092                             int size, int flags)
1093 {
1094         return security_ops->socket_recvmsg(sock, msg, size, flags);
1095 }
1096
1097 int security_socket_getsockname(struct socket *sock)
1098 {
1099         return security_ops->socket_getsockname(sock);
1100 }
1101
1102 int security_socket_getpeername(struct socket *sock)
1103 {
1104         return security_ops->socket_getpeername(sock);
1105 }
1106
1107 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1108 {
1109         return security_ops->socket_getsockopt(sock, level, optname);
1110 }
1111
1112 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1113 {
1114         return security_ops->socket_setsockopt(sock, level, optname);
1115 }
1116
1117 int security_socket_shutdown(struct socket *sock, int how)
1118 {
1119         return security_ops->socket_shutdown(sock, how);
1120 }
1121
1122 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1123 {
1124         return security_ops->socket_sock_rcv_skb(sk, skb);
1125 }
1126 EXPORT_SYMBOL(security_sock_rcv_skb);
1127
1128 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1129                                       int __user *optlen, unsigned len)
1130 {
1131         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1132 }
1133
1134 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1135 {
1136         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1137 }
1138 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1139
1140 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1141 {
1142         return security_ops->sk_alloc_security(sk, family, priority);
1143 }
1144
1145 void security_sk_free(struct sock *sk)
1146 {
1147         security_ops->sk_free_security(sk);
1148 }
1149
1150 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1151 {
1152         security_ops->sk_clone_security(sk, newsk);
1153 }
1154 EXPORT_SYMBOL(security_sk_clone);
1155
1156 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1157 {
1158         security_ops->sk_getsecid(sk, &fl->flowi_secid);
1159 }
1160 EXPORT_SYMBOL(security_sk_classify_flow);
1161
1162 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1163 {
1164         security_ops->req_classify_flow(req, fl);
1165 }
1166 EXPORT_SYMBOL(security_req_classify_flow);
1167
1168 void security_sock_graft(struct sock *sk, struct socket *parent)
1169 {
1170         security_ops->sock_graft(sk, parent);
1171 }
1172 EXPORT_SYMBOL(security_sock_graft);
1173
1174 int security_inet_conn_request(struct sock *sk,
1175                         struct sk_buff *skb, struct request_sock *req)
1176 {
1177         return security_ops->inet_conn_request(sk, skb, req);
1178 }
1179 EXPORT_SYMBOL(security_inet_conn_request);
1180
1181 void security_inet_csk_clone(struct sock *newsk,
1182                         const struct request_sock *req)
1183 {
1184         security_ops->inet_csk_clone(newsk, req);
1185 }
1186
1187 void security_inet_conn_established(struct sock *sk,
1188                         struct sk_buff *skb)
1189 {
1190         security_ops->inet_conn_established(sk, skb);
1191 }
1192
1193 int security_secmark_relabel_packet(u32 secid)
1194 {
1195         return security_ops->secmark_relabel_packet(secid);
1196 }
1197 EXPORT_SYMBOL(security_secmark_relabel_packet);
1198
1199 void security_secmark_refcount_inc(void)
1200 {
1201         security_ops->secmark_refcount_inc();
1202 }
1203 EXPORT_SYMBOL(security_secmark_refcount_inc);
1204
1205 void security_secmark_refcount_dec(void)
1206 {
1207         security_ops->secmark_refcount_dec();
1208 }
1209 EXPORT_SYMBOL(security_secmark_refcount_dec);
1210
1211 int security_tun_dev_create(void)
1212 {
1213         return security_ops->tun_dev_create();
1214 }
1215 EXPORT_SYMBOL(security_tun_dev_create);
1216
1217 void security_tun_dev_post_create(struct sock *sk)
1218 {
1219         return security_ops->tun_dev_post_create(sk);
1220 }
1221 EXPORT_SYMBOL(security_tun_dev_post_create);
1222
1223 int security_tun_dev_attach(struct sock *sk)
1224 {
1225         return security_ops->tun_dev_attach(sk);
1226 }
1227 EXPORT_SYMBOL(security_tun_dev_attach);
1228
1229 #endif  /* CONFIG_SECURITY_NETWORK */
1230
1231 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1232
1233 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1234 {
1235         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1236 }
1237 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1238
1239 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1240                               struct xfrm_sec_ctx **new_ctxp)
1241 {
1242         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1243 }
1244
1245 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1246 {
1247         security_ops->xfrm_policy_free_security(ctx);
1248 }
1249 EXPORT_SYMBOL(security_xfrm_policy_free);
1250
1251 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1252 {
1253         return security_ops->xfrm_policy_delete_security(ctx);
1254 }
1255
1256 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1257 {
1258         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1259 }
1260 EXPORT_SYMBOL(security_xfrm_state_alloc);
1261
1262 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1263                                       struct xfrm_sec_ctx *polsec, u32 secid)
1264 {
1265         if (!polsec)
1266                 return 0;
1267         /*
1268          * We want the context to be taken from secid which is usually
1269          * from the sock.
1270          */
1271         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1272 }
1273
1274 int security_xfrm_state_delete(struct xfrm_state *x)
1275 {
1276         return security_ops->xfrm_state_delete_security(x);
1277 }
1278 EXPORT_SYMBOL(security_xfrm_state_delete);
1279
1280 void security_xfrm_state_free(struct xfrm_state *x)
1281 {
1282         security_ops->xfrm_state_free_security(x);
1283 }
1284
1285 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1286 {
1287         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1288 }
1289
1290 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1291                                        struct xfrm_policy *xp,
1292                                        const struct flowi *fl)
1293 {
1294         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1295 }
1296
1297 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1298 {
1299         return security_ops->xfrm_decode_session(skb, secid, 1);
1300 }
1301
1302 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1303 {
1304         int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1305
1306         BUG_ON(rc);
1307 }
1308 EXPORT_SYMBOL(security_skb_classify_flow);
1309
1310 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1311
1312 #ifdef CONFIG_KEYS
1313
1314 int security_key_alloc(struct key *key, const struct cred *cred,
1315                        unsigned long flags)
1316 {
1317         return security_ops->key_alloc(key, cred, flags);
1318 }
1319
1320 void security_key_free(struct key *key)
1321 {
1322         security_ops->key_free(key);
1323 }
1324
1325 int security_key_permission(key_ref_t key_ref,
1326                             const struct cred *cred, key_perm_t perm)
1327 {
1328         return security_ops->key_permission(key_ref, cred, perm);
1329 }
1330
1331 int security_key_getsecurity(struct key *key, char **_buffer)
1332 {
1333         return security_ops->key_getsecurity(key, _buffer);
1334 }
1335
1336 #endif  /* CONFIG_KEYS */
1337
1338 #ifdef CONFIG_AUDIT
1339
1340 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1341 {
1342         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1343 }
1344
1345 int security_audit_rule_known(struct audit_krule *krule)
1346 {
1347         return security_ops->audit_rule_known(krule);
1348 }
1349
1350 void security_audit_rule_free(void *lsmrule)
1351 {
1352         security_ops->audit_rule_free(lsmrule);
1353 }
1354
1355 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1356                               struct audit_context *actx)
1357 {
1358         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1359 }
1360
1361 #endif /* CONFIG_AUDIT */