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