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/dcache.h>
  16 #include <linux/module.h>
  17 #include <linux/init.h>
  18 #include <linux/kernel.h>
  19 #include <linux/security.h>
  20 #include <linux/integrity.h>
  21 #include <linux/ima.h>
  22 #include <linux/evm.h>
  23 #include <linux/fsnotify.h>
  24 #include <linux/mman.h>
  25 #include <linux/mount.h>
  26 #include <linux/personality.h>
  27 #include <linux/backing-dev.h>
  28 #include <net/flow.h>
  29
  30 #define MAX_LSM_EVM_XATTR       2
  31
  32 /* Boot-time LSM user choice */
  33 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  34         CONFIG_DEFAULT_SECURITY;
  35
  36 static struct security_operations *security_ops;
  37 static struct security_operations default_security_ops = {
  38         .name   = "default",
  39 };
  40
  41 static inline int __init verify(struct security_operations *ops)
  42 {
  43         /* verify the security_operations structure exists */
  44         if (!ops)
  45                 return -EINVAL;
  46         security_fixup_ops(ops);
  47         return 0;
  48 }
  49
  50 static void __init do_security_initcalls(void)
  51 {
  52         initcall_t *call;
  53         call = __security_initcall_start;
  54         while (call < __security_initcall_end) {
  55                 (*call) ();
  56                 call++;
  57         }
  58 }
  59
  60 /**
  61  * security_init - initializes the security framework
  62  *
  63  * This should be called early in the kernel initialization sequence.
  64  */
  65 int __init security_init(void)
  66 {
  67         printk(KERN_INFO "Security Framework initialized\n");
  68
  69         security_fixup_ops(&default_security_ops);
  70         security_ops = &default_security_ops;
  71         do_security_initcalls();
  72
  73         return 0;
  74 }
  75
  76 void reset_security_ops(void)
  77 {
  78         security_ops = &default_security_ops;
  79 }
  80
  81 /* Save user chosen LSM */
  82 static int __init choose_lsm(char *str)
  83 {
  84         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  85         return 1;
  86 }
  87 __setup("security=", choose_lsm);
  88
  89 /**
  90  * security_module_enable - Load given security module on boot ?
  91  * @ops: a pointer to the struct security_operations that is to be checked.
  92  *
  93  * Each LSM must pass this method before registering its own operations
  94  * to avoid security registration races. This method may also be used
  95  * to check if your LSM is currently loaded during kernel initialization.
  96  *
  97  * Return true if:
  98  *      -The passed LSM is the one chosen by user at boot time,
  99  *      -or the passed LSM is configured as the default and the user did not
 100  *       choose an alternate LSM at boot time.
 101  * Otherwise, return false.
 102  */
 103 int __init security_module_enable(struct security_operations *ops)
 104 {
 105         return !strcmp(ops->name, chosen_lsm);
 106 }
 107
 108 /**
 109  * register_security - registers a security framework with the kernel
 110  * @ops: a pointer to the struct security_options that is to be registered
 111  *
 112  * This function allows a security module to register itself with the
 113  * kernel security subsystem.  Some rudimentary checking is done on the @ops
 114  * value passed to this function. You'll need to check first if your LSM
 115  * is allowed to register its @ops by calling security_module_enable(@ops).
 116  *
 117  * If there is already a security module registered with the kernel,
 118  * an error will be returned.  Otherwise %0 is returned on success.
 119  */
 120 int __init register_security(struct security_operations *ops)
 121 {
 122         if (verify(ops)) {
 123                 printk(KERN_DEBUG "%s could not verify "
 124                        "security_operations structure.\n", __func__);
 125                 return -EINVAL;
 126         }
 127
 128         if (security_ops != &default_security_ops)
 129                 return -EAGAIN;
 130
 131         security_ops = ops;
 132
 133         return 0;
 134 }
 135
 136 /* Security operations */
 137
 138 int security_binder_set_context_mgr(struct task_struct *mgr)
 139 {
 140         return security_ops->binder_set_context_mgr(mgr);
 141 }
 142
 143 int security_binder_transaction(struct task_struct *from,
 144                                 struct task_struct *to)
 145 {
 146         return security_ops->binder_transaction(from, to);
 147 }
 148
 149 int security_binder_transfer_binder(struct task_struct *from,
 150                                     struct task_struct *to)
 151 {
 152         return security_ops->binder_transfer_binder(from, to);
 153 }
 154
 155 int security_binder_transfer_file(struct task_struct *from,
 156                                   struct task_struct *to, struct file *file)
 157 {
 158         return security_ops->binder_transfer_file(from, to, file);
 159 }
 160
 161 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 162 {
 163 #ifdef CONFIG_SECURITY_YAMA_STACKED
 164         int rc;
 165         rc = yama_ptrace_access_check(child, mode);
 166         if (rc)
 167                 return rc;
 168 #endif
 169         return security_ops->ptrace_access_check(child, mode);
 170 }
 171
 172 int security_ptrace_traceme(struct task_struct *parent)
 173 {
 174 #ifdef CONFIG_SECURITY_YAMA_STACKED
 175         int rc;
 176         rc = yama_ptrace_traceme(parent);
 177         if (rc)
 178                 return rc;
 179 #endif
 180         return security_ops->ptrace_traceme(parent);
 181 }
 182
 183 int security_capget(struct task_struct *target,
 184                      kernel_cap_t *effective,
 185                      kernel_cap_t *inheritable,
 186                      kernel_cap_t *permitted)
 187 {
 188         return security_ops->capget(target, effective, inheritable, permitted);
 189 }
 190
 191 int security_capset(struct cred *new, const struct cred *old,
 192                     const kernel_cap_t *effective,
 193                     const kernel_cap_t *inheritable,
 194                     const kernel_cap_t *permitted)
 195 {
 196         return security_ops->capset(new, old,
 197                                     effective, inheritable, permitted);
 198 }
 199
 200 int security_capable(const struct cred *cred, struct user_namespace *ns,
 201                      int cap)
 202 {
 203         return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 204 }
 205
 206 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 207                              int cap)
 208 {
 209         return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
 210 }
 211
 212 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 213 {
 214         return security_ops->quotactl(cmds, type, id, sb);
 215 }
 216
 217 int security_quota_on(struct dentry *dentry)
 218 {
 219         return security_ops->quota_on(dentry);
 220 }
 221
 222 int security_syslog(int type)
 223 {
 224         return security_ops->syslog(type);
 225 }
 226
 227 int security_settime(const struct timespec *ts, const struct timezone *tz)
 228 {
 229         return security_ops->settime(ts, tz);
 230 }
 231
 232 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 233 {
 234         return security_ops->vm_enough_memory(mm, pages);
 235 }
 236
 237 int security_bprm_set_creds(struct linux_binprm *bprm)
 238 {
 239         return security_ops->bprm_set_creds(bprm);
 240 }
 241
 242 int security_bprm_check(struct linux_binprm *bprm)
 243 {
 244         int ret;
 245
 246         ret = security_ops->bprm_check_security(bprm);
 247         if (ret)
 248                 return ret;
 249         return ima_bprm_check(bprm);
 250 }
 251
 252 void security_bprm_committing_creds(struct linux_binprm *bprm)
 253 {
 254         security_ops->bprm_committing_creds(bprm);
 255 }
 256
 257 void security_bprm_committed_creds(struct linux_binprm *bprm)
 258 {
 259         security_ops->bprm_committed_creds(bprm);
 260 }
 261
 262 int security_bprm_secureexec(struct linux_binprm *bprm)
 263 {
 264         return security_ops->bprm_secureexec(bprm);
 265 }
 266
 267 int security_sb_alloc(struct super_block *sb)
 268 {
 269         return security_ops->sb_alloc_security(sb);
 270 }
 271
 272 void security_sb_free(struct super_block *sb)
 273 {
 274         security_ops->sb_free_security(sb);
 275 }
 276
 277 int security_sb_copy_data(char *orig, char *copy)
 278 {
 279         return security_ops->sb_copy_data(orig, copy);
 280 }
 281 EXPORT_SYMBOL(security_sb_copy_data);
 282
 283 int security_sb_remount(struct super_block *sb, void *data)
 284 {
 285         return security_ops->sb_remount(sb, data);
 286 }
 287
 288 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 289 {
 290         return security_ops->sb_kern_mount(sb, flags, data);
 291 }
 292
 293 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 294 {
 295         return security_ops->sb_show_options(m, sb);
 296 }
 297
 298 int security_sb_statfs(struct dentry *dentry)
 299 {
 300         return security_ops->sb_statfs(dentry);
 301 }
 302
 303 int security_sb_mount(const char *dev_name, struct path *path,
 304                        const char *type, unsigned long flags, void *data)
 305 {
 306         return security_ops->sb_mount(dev_name, path, type, flags, data);
 307 }
 308
 309 int security_sb_umount(struct vfsmount *mnt, int flags)
 310 {
 311         return security_ops->sb_umount(mnt, flags);
 312 }
 313
 314 int security_sb_pivotroot(struct path *old_path, struct path *new_path)
 315 {
 316         return security_ops->sb_pivotroot(old_path, new_path);
 317 }
 318
 319 int security_sb_set_mnt_opts(struct super_block *sb,
 320                                 struct security_mnt_opts *opts,
 321                                 unsigned long kern_flags,
 322                                 unsigned long *set_kern_flags)
 323 {
 324         return security_ops->sb_set_mnt_opts(sb, opts, kern_flags,
 325                                                 set_kern_flags);
 326 }
 327 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 328
 329 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 330                                 struct super_block *newsb)
 331 {
 332         return security_ops->sb_clone_mnt_opts(oldsb, newsb);
 333 }
 334 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 335
 336 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 337 {
 338         return security_ops->sb_parse_opts_str(options, opts);
 339 }
 340 EXPORT_SYMBOL(security_sb_parse_opts_str);
 341
 342 int security_inode_alloc(struct inode *inode)
 343 {
 344         inode->i_security = NULL;
 345         return security_ops->inode_alloc_security(inode);
 346 }
 347
 348 void security_inode_free(struct inode *inode)
 349 {
 350         integrity_inode_free(inode);
 351         security_ops->inode_free_security(inode);
 352 }
 353
 354 int security_dentry_init_security(struct dentry *dentry, int mode,
 355                                         struct qstr *name, void **ctx,
 356                                         u32 *ctxlen)
 357 {
 358         return security_ops->dentry_init_security(dentry, mode, name,
 359                                                         ctx, ctxlen);
 360 }
 361 EXPORT_SYMBOL(security_dentry_init_security);
 362
 363 int security_inode_init_security(struct inode *inode, struct inode *dir,
 364                                  const struct qstr *qstr,
 365                                  const initxattrs initxattrs, void *fs_data)
 366 {
 367         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
 368         struct xattr *lsm_xattr, *evm_xattr, *xattr;
 369         int ret;
 370
 371         if (unlikely(IS_PRIVATE(inode)))
 372                 return 0;
 373
 374         if (!initxattrs)
 375                 return security_ops->inode_init_security(inode, dir, qstr,
 376                                                          NULL, NULL, NULL);
 377         memset(new_xattrs, 0, sizeof(new_xattrs));
 378         lsm_xattr = new_xattrs;
 379         ret = security_ops->inode_init_security(inode, dir, qstr,
 380                                                 &lsm_xattr->name,
 381                                                 &lsm_xattr->value,
 382                                                 &lsm_xattr->value_len);
 383         if (ret)
 384                 goto out;
 385
 386         evm_xattr = lsm_xattr + 1;
 387         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
 388         if (ret)
 389                 goto out;
 390         ret = initxattrs(inode, new_xattrs, fs_data);
 391 out:
 392         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
 393                 kfree(xattr->value);
 394         return (ret == -EOPNOTSUPP) ? 0 : ret;
 395 }
 396 EXPORT_SYMBOL(security_inode_init_security);
 397
 398 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 399                                      const struct qstr *qstr, const char **name,
 400                                      void **value, size_t *len)
 401 {
 402         if (unlikely(IS_PRIVATE(inode)))
 403                 return -EOPNOTSUPP;
 404         return security_ops->inode_init_security(inode, dir, qstr, name, value,
 405                                                  len);
 406 }
 407 EXPORT_SYMBOL(security_old_inode_init_security);
 408
 409 #ifdef CONFIG_SECURITY_PATH
 410 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
 411                         unsigned int dev)
 412 {
 413         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 414                 return 0;
 415         return security_ops->path_mknod(dir, dentry, mode, dev);
 416 }
 417 EXPORT_SYMBOL(security_path_mknod);
 418
 419 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
 420 {
 421         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 422                 return 0;
 423         return security_ops->path_mkdir(dir, dentry, mode);
 424 }
 425 EXPORT_SYMBOL(security_path_mkdir);
 426
 427 int security_path_rmdir(struct path *dir, struct dentry *dentry)
 428 {
 429         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 430                 return 0;
 431         return security_ops->path_rmdir(dir, dentry);
 432 }
 433
 434 int security_path_unlink(struct path *dir, struct dentry *dentry)
 435 {
 436         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 437                 return 0;
 438         return security_ops->path_unlink(dir, dentry);
 439 }
 440 EXPORT_SYMBOL(security_path_unlink);
 441
 442 int security_path_symlink(struct path *dir, struct dentry *dentry,
 443                           const char *old_name)
 444 {
 445         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 446                 return 0;
 447         return security_ops->path_symlink(dir, dentry, old_name);
 448 }
 449
 450 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
 451                        struct dentry *new_dentry)
 452 {
 453         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 454                 return 0;
 455         return security_ops->path_link(old_dentry, new_dir, new_dentry);
 456 }
 457
 458 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
 459                          struct path *new_dir, struct dentry *new_dentry,
 460                          unsigned int flags)
 461 {
 462         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 463                      (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 464                 return 0;
 465
 466         if (flags & RENAME_EXCHANGE) {
 467                 int err = security_ops->path_rename(new_dir, new_dentry,
 468                                                     old_dir, old_dentry);
 469                 if (err)
 470                         return err;
 471         }
 472
 473         return security_ops->path_rename(old_dir, old_dentry, new_dir,
 474                                          new_dentry);
 475 }
 476 EXPORT_SYMBOL(security_path_rename);
 477
 478 int security_path_truncate(struct path *path)
 479 {
 480         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 481                 return 0;
 482         return security_ops->path_truncate(path);
 483 }
 484
 485 int security_path_chmod(struct path *path, umode_t mode)
 486 {
 487         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 488                 return 0;
 489         return security_ops->path_chmod(path, mode);
 490 }
 491
 492 int security_path_chown(struct path *path, kuid_t uid, kgid_t gid)
 493 {
 494         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 495                 return 0;
 496         return security_ops->path_chown(path, uid, gid);
 497 }
 498
 499 int security_path_chroot(struct path *path)
 500 {
 501         return security_ops->path_chroot(path);
 502 }
 503 #endif
 504
 505 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
 506 {
 507         if (unlikely(IS_PRIVATE(dir)))
 508                 return 0;
 509         return security_ops->inode_create(dir, dentry, mode);
 510 }
 511 EXPORT_SYMBOL_GPL(security_inode_create);
 512
 513 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 514                          struct dentry *new_dentry)
 515 {
 516         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 517                 return 0;
 518         return security_ops->inode_link(old_dentry, dir, new_dentry);
 519 }
 520
 521 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 522 {
 523         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 524                 return 0;
 525         return security_ops->inode_unlink(dir, dentry);
 526 }
 527
 528 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 529                             const char *old_name)
 530 {
 531         if (unlikely(IS_PRIVATE(dir)))
 532                 return 0;
 533         return security_ops->inode_symlink(dir, dentry, old_name);
 534 }
 535
 536 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 537 {
 538         if (unlikely(IS_PRIVATE(dir)))
 539                 return 0;
 540         return security_ops->inode_mkdir(dir, dentry, mode);
 541 }
 542 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 543
 544 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 545 {
 546         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 547                 return 0;
 548         return security_ops->inode_rmdir(dir, dentry);
 549 }
 550
 551 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
 552 {
 553         if (unlikely(IS_PRIVATE(dir)))
 554                 return 0;
 555         return security_ops->inode_mknod(dir, dentry, mode, dev);
 556 }
 557
 558 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 559                            struct inode *new_dir, struct dentry *new_dentry,
 560                            unsigned int flags)
 561 {
 562         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 563             (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 564                 return 0;
 565
 566         if (flags & RENAME_EXCHANGE) {
 567                 int err = security_ops->inode_rename(new_dir, new_dentry,
 568                                                      old_dir, old_dentry);
 569                 if (err)
 570                         return err;
 571         }
 572
 573         return security_ops->inode_rename(old_dir, old_dentry,
 574                                            new_dir, new_dentry);
 575 }
 576
 577 int security_inode_readlink(struct dentry *dentry)
 578 {
 579         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 580                 return 0;
 581         return security_ops->inode_readlink(dentry);
 582 }
 583
 584 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 585                                bool rcu)
 586 {
 587         if (unlikely(IS_PRIVATE(inode)))
 588                 return 0;
 589         return security_ops->inode_follow_link(dentry, inode, rcu);
 590 }
 591
 592 int security_inode_permission(struct inode *inode, int mask)
 593 {
 594         if (unlikely(IS_PRIVATE(inode)))
 595                 return 0;
 596         return security_ops->inode_permission(inode, mask);
 597 }
 598
 599 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 600 {
 601         int ret;
 602
 603         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 604                 return 0;
 605         ret = security_ops->inode_setattr(dentry, attr);
 606         if (ret)
 607                 return ret;
 608         return evm_inode_setattr(dentry, attr);
 609 }
 610 EXPORT_SYMBOL_GPL(security_inode_setattr);
 611
 612 int security_inode_getattr(const struct path *path)
 613 {
 614         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 615                 return 0;
 616         return security_ops->inode_getattr(path);
 617 }
 618
 619 int security_inode_setxattr(struct dentry *dentry, const char *name,
 620                             const void *value, size_t size, int flags)
 621 {
 622         int ret;
 623
 624         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 625                 return 0;
 626         ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
 627         if (ret)
 628                 return ret;
 629         ret = ima_inode_setxattr(dentry, name, value, size);
 630         if (ret)
 631                 return ret;
 632         return evm_inode_setxattr(dentry, name, value, size);
 633 }
 634
 635 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 636                                   const void *value, size_t size, int flags)
 637 {
 638         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 639                 return;
 640         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 641         evm_inode_post_setxattr(dentry, name, value, size);
 642 }
 643
 644 int security_inode_getxattr(struct dentry *dentry, const char *name)
 645 {
 646         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 647                 return 0;
 648         return security_ops->inode_getxattr(dentry, name);
 649 }
 650
 651 int security_inode_listxattr(struct dentry *dentry)
 652 {
 653         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 654                 return 0;
 655         return security_ops->inode_listxattr(dentry);
 656 }
 657
 658 int security_inode_removexattr(struct dentry *dentry, const char *name)
 659 {
 660         int ret;
 661
 662         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 663                 return 0;
 664         ret = security_ops->inode_removexattr(dentry, name);
 665         if (ret)
 666                 return ret;
 667         ret = ima_inode_removexattr(dentry, name);
 668         if (ret)
 669                 return ret;
 670         return evm_inode_removexattr(dentry, name);
 671 }
 672
 673 int security_inode_need_killpriv(struct dentry *dentry)
 674 {
 675         return security_ops->inode_need_killpriv(dentry);
 676 }
 677
 678 int security_inode_killpriv(struct dentry *dentry)
 679 {
 680         return security_ops->inode_killpriv(dentry);
 681 }
 682
 683 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 684 {
 685         if (unlikely(IS_PRIVATE(inode)))
 686                 return -EOPNOTSUPP;
 687         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 688 }
 689
 690 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 691 {
 692         if (unlikely(IS_PRIVATE(inode)))
 693                 return -EOPNOTSUPP;
 694         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 695 }
 696
 697 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 698 {
 699         if (unlikely(IS_PRIVATE(inode)))
 700                 return 0;
 701         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 702 }
 703 EXPORT_SYMBOL(security_inode_listsecurity);
 704
 705 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 706 {
 707         security_ops->inode_getsecid(inode, secid);
 708 }
 709
 710 int security_file_permission(struct file *file, int mask)
 711 {
 712         int ret;
 713
 714         ret = security_ops->file_permission(file, mask);
 715         if (ret)
 716                 return ret;
 717
 718         return fsnotify_perm(file, mask);
 719 }
 720
 721 int security_file_alloc(struct file *file)
 722 {
 723         return security_ops->file_alloc_security(file);
 724 }
 725
 726 void security_file_free(struct file *file)
 727 {
 728         security_ops->file_free_security(file);
 729 }
 730
 731 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 732 {
 733         return security_ops->file_ioctl(file, cmd, arg);
 734 }
 735
 736 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
 737 {
 738         /*
 739          * Does we have PROT_READ and does the application expect
 740          * it to imply PROT_EXEC?  If not, nothing to talk about...
 741          */
 742         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
 743                 return prot;
 744         if (!(current->personality & READ_IMPLIES_EXEC))
 745                 return prot;
 746         /*
 747          * if that's an anonymous mapping, let it.
 748          */
 749         if (!file)
 750                 return prot | PROT_EXEC;
 751         /*
 752          * ditto if it's not on noexec mount, except that on !MMU we need
 753          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
 754          */
 755         if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) {
 756 #ifndef CONFIG_MMU
 757                 if (file->f_op->mmap_capabilities) {
 758                         unsigned caps = file->f_op->mmap_capabilities(file);
 759                         if (!(caps & NOMMU_MAP_EXEC))
 760                                 return prot;
 761                 }
 762 #endif
 763                 return prot | PROT_EXEC;
 764         }
 765         /* anything on noexec mount won't get PROT_EXEC */
 766         return prot;
 767 }
 768
 769 int security_mmap_file(struct file *file, unsigned long prot,
 770                         unsigned long flags)
 771 {
 772         int ret;
 773         ret = security_ops->mmap_file(file, prot,
 774                                         mmap_prot(file, prot), flags);
 775         if (ret)
 776                 return ret;
 777         return ima_file_mmap(file, prot);
 778 }
 779
 780 int security_mmap_addr(unsigned long addr)
 781 {
 782         return security_ops->mmap_addr(addr);
 783 }
 784
 785 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 786                             unsigned long prot)
 787 {
 788         return security_ops->file_mprotect(vma, reqprot, prot);
 789 }
 790
 791 int security_file_lock(struct file *file, unsigned int cmd)
 792 {
 793         return security_ops->file_lock(file, cmd);
 794 }
 795
 796 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 797 {
 798         return security_ops->file_fcntl(file, cmd, arg);
 799 }
 800
 801 void security_file_set_fowner(struct file *file)
 802 {
 803         security_ops->file_set_fowner(file);
 804 }
 805
 806 int security_file_send_sigiotask(struct task_struct *tsk,
 807                                   struct fown_struct *fown, int sig)
 808 {
 809         return security_ops->file_send_sigiotask(tsk, fown, sig);
 810 }
 811
 812 int security_file_receive(struct file *file)
 813 {
 814         return security_ops->file_receive(file);
 815 }
 816
 817 int security_file_open(struct file *file, const struct cred *cred)
 818 {
 819         int ret;
 820
 821         ret = security_ops->file_open(file, cred);
 822         if (ret)
 823                 return ret;
 824
 825         return fsnotify_perm(file, MAY_OPEN);
 826 }
 827
 828 int security_task_create(unsigned long clone_flags)
 829 {
 830         return security_ops->task_create(clone_flags);
 831 }
 832
 833 void security_task_free(struct task_struct *task)
 834 {
 835 #ifdef CONFIG_SECURITY_YAMA_STACKED
 836         yama_task_free(task);
 837 #endif
 838         security_ops->task_free(task);
 839 }
 840
 841 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 842 {
 843         return security_ops->cred_alloc_blank(cred, gfp);
 844 }
 845
 846 void security_cred_free(struct cred *cred)
 847 {
 848         security_ops->cred_free(cred);
 849 }
 850
 851 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 852 {
 853         return security_ops->cred_prepare(new, old, gfp);
 854 }
 855
 856 void security_transfer_creds(struct cred *new, const struct cred *old)
 857 {
 858         security_ops->cred_transfer(new, old);
 859 }
 860
 861 int security_kernel_act_as(struct cred *new, u32 secid)
 862 {
 863         return security_ops->kernel_act_as(new, secid);
 864 }
 865
 866 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 867 {
 868         return security_ops->kernel_create_files_as(new, inode);
 869 }
 870
 871 int security_kernel_fw_from_file(struct file *file, char *buf, size_t size)
 872 {
 873         int ret;
 874
 875         ret = security_ops->kernel_fw_from_file(file, buf, size);
 876         if (ret)
 877                 return ret;
 878         return ima_fw_from_file(file, buf, size);
 879 }
 880 EXPORT_SYMBOL_GPL(security_kernel_fw_from_file);
 881
 882 int security_kernel_module_request(char *kmod_name)
 883 {
 884         return security_ops->kernel_module_request(kmod_name);
 885 }
 886
 887 int security_kernel_module_from_file(struct file *file)
 888 {
 889         int ret;
 890
 891         ret = security_ops->kernel_module_from_file(file);
 892         if (ret)
 893                 return ret;
 894         return ima_module_check(file);
 895 }
 896
 897 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 898                              int flags)
 899 {
 900         return security_ops->task_fix_setuid(new, old, flags);
 901 }
 902
 903 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 904 {
 905         return security_ops->task_setpgid(p, pgid);
 906 }
 907
 908 int security_task_getpgid(struct task_struct *p)
 909 {
 910         return security_ops->task_getpgid(p);
 911 }
 912
 913 int security_task_getsid(struct task_struct *p)
 914 {
 915         return security_ops->task_getsid(p);
 916 }
 917
 918 void security_task_getsecid(struct task_struct *p, u32 *secid)
 919 {
 920         security_ops->task_getsecid(p, secid);
 921 }
 922 EXPORT_SYMBOL(security_task_getsecid);
 923
 924 int security_task_setnice(struct task_struct *p, int nice)
 925 {
 926         return security_ops->task_setnice(p, nice);
 927 }
 928
 929 int security_task_setioprio(struct task_struct *p, int ioprio)
 930 {
 931         return security_ops->task_setioprio(p, ioprio);
 932 }
 933
 934 int security_task_getioprio(struct task_struct *p)
 935 {
 936         return security_ops->task_getioprio(p);
 937 }
 938
 939 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 940                 struct rlimit *new_rlim)
 941 {
 942         return security_ops->task_setrlimit(p, resource, new_rlim);
 943 }
 944
 945 int security_task_setscheduler(struct task_struct *p)
 946 {
 947         return security_ops->task_setscheduler(p);
 948 }
 949
 950 int security_task_getscheduler(struct task_struct *p)
 951 {
 952         return security_ops->task_getscheduler(p);
 953 }
 954
 955 int security_task_movememory(struct task_struct *p)
 956 {
 957         return security_ops->task_movememory(p);
 958 }
 959
 960 int security_task_kill(struct task_struct *p, struct siginfo *info,
 961                         int sig, u32 secid)
 962 {
 963         return security_ops->task_kill(p, info, sig, secid);
 964 }
 965
 966 int security_task_wait(struct task_struct *p)
 967 {
 968         return security_ops->task_wait(p);
 969 }
 970
 971 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 972                          unsigned long arg4, unsigned long arg5)
 973 {
 974 #ifdef CONFIG_SECURITY_YAMA_STACKED
 975         int rc;
 976         rc = yama_task_prctl(option, arg2, arg3, arg4, arg5);
 977         if (rc != -ENOSYS)
 978                 return rc;
 979 #endif
 980         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 981 }
 982
 983 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 984 {
 985         security_ops->task_to_inode(p, inode);
 986 }
 987
 988 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 989 {
 990         return security_ops->ipc_permission(ipcp, flag);
 991 }
 992
 993 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 994 {
 995         security_ops->ipc_getsecid(ipcp, secid);
 996 }
 997
 998 int security_msg_msg_alloc(struct msg_msg *msg)
 999 {
1000         return security_ops->msg_msg_alloc_security(msg);
1001 }
1002
1003 void security_msg_msg_free(struct msg_msg *msg)
1004 {
1005         security_ops->msg_msg_free_security(msg);
1006 }
1007
1008 int security_msg_queue_alloc(struct msg_queue *msq)
1009 {
1010         return security_ops->msg_queue_alloc_security(msq);
1011 }
1012
1013 void security_msg_queue_free(struct msg_queue *msq)
1014 {
1015         security_ops->msg_queue_free_security(msq);
1016 }
1017
1018 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
1019 {
1020         return security_ops->msg_queue_associate(msq, msqflg);
1021 }
1022
1023 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1024 {
1025         return security_ops->msg_queue_msgctl(msq, cmd);
1026 }
1027
1028 int security_msg_queue_msgsnd(struct msg_queue *msq,
1029                                struct msg_msg *msg, int msqflg)
1030 {
1031         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
1032 }
1033
1034 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1035                                struct task_struct *target, long type, int mode)
1036 {
1037         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
1038 }
1039
1040 int security_shm_alloc(struct shmid_kernel *shp)
1041 {
1042         return security_ops->shm_alloc_security(shp);
1043 }
1044
1045 void security_shm_free(struct shmid_kernel *shp)
1046 {
1047         security_ops->shm_free_security(shp);
1048 }
1049
1050 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1051 {
1052         return security_ops->shm_associate(shp, shmflg);
1053 }
1054
1055 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1056 {
1057         return security_ops->shm_shmctl(shp, cmd);
1058 }
1059
1060 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1061 {
1062         return security_ops->shm_shmat(shp, shmaddr, shmflg);
1063 }
1064
1065 int security_sem_alloc(struct sem_array *sma)
1066 {
1067         return security_ops->sem_alloc_security(sma);
1068 }
1069
1070 void security_sem_free(struct sem_array *sma)
1071 {
1072         security_ops->sem_free_security(sma);
1073 }
1074
1075 int security_sem_associate(struct sem_array *sma, int semflg)
1076 {
1077         return security_ops->sem_associate(sma, semflg);
1078 }
1079
1080 int security_sem_semctl(struct sem_array *sma, int cmd)
1081 {
1082         return security_ops->sem_semctl(sma, cmd);
1083 }
1084
1085 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1086                         unsigned nsops, int alter)
1087 {
1088         return security_ops->sem_semop(sma, sops, nsops, alter);
1089 }
1090
1091 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1092 {
1093         if (unlikely(inode && IS_PRIVATE(inode)))
1094                 return;
1095         security_ops->d_instantiate(dentry, inode);
1096 }
1097 EXPORT_SYMBOL(security_d_instantiate);
1098
1099 int security_getprocattr(struct task_struct *p, char *name, char **value)
1100 {
1101         return security_ops->getprocattr(p, name, value);
1102 }
1103
1104 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1105 {
1106         return security_ops->setprocattr(p, name, value, size);
1107 }
1108
1109 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1110 {
1111         return security_ops->netlink_send(sk, skb);
1112 }
1113
1114 int security_ismaclabel(const char *name)
1115 {
1116         return security_ops->ismaclabel(name);
1117 }
1118 EXPORT_SYMBOL(security_ismaclabel);
1119
1120 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1121 {
1122         return security_ops->secid_to_secctx(secid, secdata, seclen);
1123 }
1124 EXPORT_SYMBOL(security_secid_to_secctx);
1125
1126 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1127 {
1128         return security_ops->secctx_to_secid(secdata, seclen, secid);
1129 }
1130 EXPORT_SYMBOL(security_secctx_to_secid);
1131
1132 void security_release_secctx(char *secdata, u32 seclen)
1133 {
1134         security_ops->release_secctx(secdata, seclen);
1135 }
1136 EXPORT_SYMBOL(security_release_secctx);
1137
1138 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1139 {
1140         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1141 }
1142 EXPORT_SYMBOL(security_inode_notifysecctx);
1143
1144 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1145 {
1146         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1147 }
1148 EXPORT_SYMBOL(security_inode_setsecctx);
1149
1150 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1151 {
1152         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1153 }
1154 EXPORT_SYMBOL(security_inode_getsecctx);
1155
1156 #ifdef CONFIG_SECURITY_NETWORK
1157
1158 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1159 {
1160         return security_ops->unix_stream_connect(sock, other, newsk);
1161 }
1162 EXPORT_SYMBOL(security_unix_stream_connect);
1163
1164 int security_unix_may_send(struct socket *sock,  struct socket *other)
1165 {
1166         return security_ops->unix_may_send(sock, other);
1167 }
1168 EXPORT_SYMBOL(security_unix_may_send);
1169
1170 int security_socket_create(int family, int type, int protocol, int kern)
1171 {
1172         return security_ops->socket_create(family, type, protocol, kern);
1173 }
1174
1175 int security_socket_post_create(struct socket *sock, int family,
1176                                 int type, int protocol, int kern)
1177 {
1178         return security_ops->socket_post_create(sock, family, type,
1179                                                 protocol, kern);
1180 }
1181
1182 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1183 {
1184         return security_ops->socket_bind(sock, address, addrlen);
1185 }
1186
1187 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1188 {
1189         return security_ops->socket_connect(sock, address, addrlen);
1190 }
1191
1192 int security_socket_listen(struct socket *sock, int backlog)
1193 {
1194         return security_ops->socket_listen(sock, backlog);
1195 }
1196
1197 int security_socket_accept(struct socket *sock, struct socket *newsock)
1198 {
1199         return security_ops->socket_accept(sock, newsock);
1200 }
1201
1202 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1203 {
1204         return security_ops->socket_sendmsg(sock, msg, size);
1205 }
1206
1207 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1208                             int size, int flags)
1209 {
1210         return security_ops->socket_recvmsg(sock, msg, size, flags);
1211 }
1212
1213 int security_socket_getsockname(struct socket *sock)
1214 {
1215         return security_ops->socket_getsockname(sock);
1216 }
1217
1218 int security_socket_getpeername(struct socket *sock)
1219 {
1220         return security_ops->socket_getpeername(sock);
1221 }
1222
1223 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1224 {
1225         return security_ops->socket_getsockopt(sock, level, optname);
1226 }
1227
1228 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1229 {
1230         return security_ops->socket_setsockopt(sock, level, optname);
1231 }
1232
1233 int security_socket_shutdown(struct socket *sock, int how)
1234 {
1235         return security_ops->socket_shutdown(sock, how);
1236 }
1237
1238 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1239 {
1240         return security_ops->socket_sock_rcv_skb(sk, skb);
1241 }
1242 EXPORT_SYMBOL(security_sock_rcv_skb);
1243
1244 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1245                                       int __user *optlen, unsigned len)
1246 {
1247         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1248 }
1249
1250 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1251 {
1252         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1253 }
1254 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1255
1256 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1257 {
1258         return security_ops->sk_alloc_security(sk, family, priority);
1259 }
1260
1261 void security_sk_free(struct sock *sk)
1262 {
1263         security_ops->sk_free_security(sk);
1264 }
1265
1266 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1267 {
1268         security_ops->sk_clone_security(sk, newsk);
1269 }
1270 EXPORT_SYMBOL(security_sk_clone);
1271
1272 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1273 {
1274         security_ops->sk_getsecid(sk, &fl->flowi_secid);
1275 }
1276 EXPORT_SYMBOL(security_sk_classify_flow);
1277
1278 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1279 {
1280         security_ops->req_classify_flow(req, fl);
1281 }
1282 EXPORT_SYMBOL(security_req_classify_flow);
1283
1284 void security_sock_graft(struct sock *sk, struct socket *parent)
1285 {
1286         security_ops->sock_graft(sk, parent);
1287 }
1288 EXPORT_SYMBOL(security_sock_graft);
1289
1290 int security_inet_conn_request(struct sock *sk,
1291                         struct sk_buff *skb, struct request_sock *req)
1292 {
1293         return security_ops->inet_conn_request(sk, skb, req);
1294 }
1295 EXPORT_SYMBOL(security_inet_conn_request);
1296
1297 void security_inet_csk_clone(struct sock *newsk,
1298                         const struct request_sock *req)
1299 {
1300         security_ops->inet_csk_clone(newsk, req);
1301 }
1302
1303 void security_inet_conn_established(struct sock *sk,
1304                         struct sk_buff *skb)
1305 {
1306         security_ops->inet_conn_established(sk, skb);
1307 }
1308
1309 int security_secmark_relabel_packet(u32 secid)
1310 {
1311         return security_ops->secmark_relabel_packet(secid);
1312 }
1313 EXPORT_SYMBOL(security_secmark_relabel_packet);
1314
1315 void security_secmark_refcount_inc(void)
1316 {
1317         security_ops->secmark_refcount_inc();
1318 }
1319 EXPORT_SYMBOL(security_secmark_refcount_inc);
1320
1321 void security_secmark_refcount_dec(void)
1322 {
1323         security_ops->secmark_refcount_dec();
1324 }
1325 EXPORT_SYMBOL(security_secmark_refcount_dec);
1326
1327 int security_tun_dev_alloc_security(void **security)
1328 {
1329         return security_ops->tun_dev_alloc_security(security);
1330 }
1331 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1332
1333 void security_tun_dev_free_security(void *security)
1334 {
1335         security_ops->tun_dev_free_security(security);
1336 }
1337 EXPORT_SYMBOL(security_tun_dev_free_security);
1338
1339 int security_tun_dev_create(void)
1340 {
1341         return security_ops->tun_dev_create();
1342 }
1343 EXPORT_SYMBOL(security_tun_dev_create);
1344
1345 int security_tun_dev_attach_queue(void *security)
1346 {
1347         return security_ops->tun_dev_attach_queue(security);
1348 }
1349 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1350
1351 int security_tun_dev_attach(struct sock *sk, void *security)
1352 {
1353         return security_ops->tun_dev_attach(sk, security);
1354 }
1355 EXPORT_SYMBOL(security_tun_dev_attach);
1356
1357 int security_tun_dev_open(void *security)
1358 {
1359         return security_ops->tun_dev_open(security);
1360 }
1361 EXPORT_SYMBOL(security_tun_dev_open);
1362
1363 #endif  /* CONFIG_SECURITY_NETWORK */
1364
1365 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1366
1367 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1368                                struct xfrm_user_sec_ctx *sec_ctx,
1369                                gfp_t gfp)
1370 {
1371         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx, gfp);
1372 }
1373 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1374
1375 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1376                               struct xfrm_sec_ctx **new_ctxp)
1377 {
1378         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1379 }
1380
1381 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1382 {
1383         security_ops->xfrm_policy_free_security(ctx);
1384 }
1385 EXPORT_SYMBOL(security_xfrm_policy_free);
1386
1387 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1388 {
1389         return security_ops->xfrm_policy_delete_security(ctx);
1390 }
1391
1392 int security_xfrm_state_alloc(struct xfrm_state *x,
1393                               struct xfrm_user_sec_ctx *sec_ctx)
1394 {
1395         return security_ops->xfrm_state_alloc(x, sec_ctx);
1396 }
1397 EXPORT_SYMBOL(security_xfrm_state_alloc);
1398
1399 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1400                                       struct xfrm_sec_ctx *polsec, u32 secid)
1401 {
1402         return security_ops->xfrm_state_alloc_acquire(x, polsec, secid);
1403 }
1404
1405 int security_xfrm_state_delete(struct xfrm_state *x)
1406 {
1407         return security_ops->xfrm_state_delete_security(x);
1408 }
1409 EXPORT_SYMBOL(security_xfrm_state_delete);
1410
1411 void security_xfrm_state_free(struct xfrm_state *x)
1412 {
1413         security_ops->xfrm_state_free_security(x);
1414 }
1415
1416 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1417 {
1418         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1419 }
1420
1421 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1422                                        struct xfrm_policy *xp,
1423                                        const struct flowi *fl)
1424 {
1425         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1426 }
1427
1428 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1429 {
1430         return security_ops->xfrm_decode_session(skb, secid, 1);
1431 }
1432
1433 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1434 {
1435         int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1436
1437         BUG_ON(rc);
1438 }
1439 EXPORT_SYMBOL(security_skb_classify_flow);
1440
1441 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1442
1443 #ifdef CONFIG_KEYS
1444
1445 int security_key_alloc(struct key *key, const struct cred *cred,
1446                        unsigned long flags)
1447 {
1448         return security_ops->key_alloc(key, cred, flags);
1449 }
1450
1451 void security_key_free(struct key *key)
1452 {
1453         security_ops->key_free(key);
1454 }
1455
1456 int security_key_permission(key_ref_t key_ref,
1457                             const struct cred *cred, unsigned perm)
1458 {
1459         return security_ops->key_permission(key_ref, cred, perm);
1460 }
1461
1462 int security_key_getsecurity(struct key *key, char **_buffer)
1463 {
1464         return security_ops->key_getsecurity(key, _buffer);
1465 }
1466
1467 #endif  /* CONFIG_KEYS */
1468
1469 #ifdef CONFIG_AUDIT
1470
1471 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1472 {
1473         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1474 }
1475
1476 int security_audit_rule_known(struct audit_krule *krule)
1477 {
1478         return security_ops->audit_rule_known(krule);
1479 }
1480
1481 void security_audit_rule_free(void *lsmrule)
1482 {
1483         security_ops->audit_rule_free(lsmrule);
1484 }
1485
1486 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1487                               struct audit_context *actx)
1488 {
1489         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1490 }
1491
1492 #endif /* CONFIG_AUDIT */