security/security.c

   1 /*
   2  * Security plug functions
   3  *
   4  * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
   5  * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
   6  * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
   7  *
   8  *      This program is free software; you can redistribute it and/or modify
   9  *      it under the terms of the GNU General Public License as published by
  10  *      the Free Software Foundation; either version 2 of the License, or
  11  *      (at your option) any later version.
  12  */
  13
  14 #include <linux/capability.h>
  15 #include <linux/module.h>
  16 #include <linux/init.h>
  17 #include <linux/kernel.h>
  18 #include <linux/security.h>
  19 #include <linux/integrity.h>
  20 #include <linux/ima.h>
  21 #include <linux/evm.h>
  22 #include <linux/fsnotify.h>
  23 #include <linux/mman.h>
  24 #include <linux/mount.h>
  25 #include <linux/personality.h>
  26 #include <linux/backing-dev.h>
  27 #include <net/flow.h>
  28
  29 #define MAX_LSM_EVM_XATTR       2
  30
  31 /* Boot-time LSM user choice */
  32 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  33         CONFIG_DEFAULT_SECURITY;
  34
  35 static struct security_operations *security_ops;
  36 static struct security_operations default_security_ops = {
  37         .name   = "default",
  38 };
  39
  40 static inline int __init verify(struct security_operations *ops)
  41 {
  42         /* verify the security_operations structure exists */
  43         if (!ops)
  44                 return -EINVAL;
  45         security_fixup_ops(ops);
  46         return 0;
  47 }
  48
  49 static void __init do_security_initcalls(void)
  50 {
  51         initcall_t *call;
  52         call = __security_initcall_start;
  53         while (call < __security_initcall_end) {
  54                 (*call) ();
  55                 call++;
  56         }
  57 }
  58
  59 /**
  60  * security_init - initializes the security framework
  61  *
  62  * This should be called early in the kernel initialization sequence.
  63  */
  64 int __init security_init(void)
  65 {
  66         printk(KERN_INFO "Security Framework initialized\n");
  67
  68         security_fixup_ops(&default_security_ops);
  69         security_ops = &default_security_ops;
  70         do_security_initcalls();
  71
  72         return 0;
  73 }
  74
  75 void reset_security_ops(void)
  76 {
  77         security_ops = &default_security_ops;
  78 }
  79
  80 /* Save user chosen LSM */
  81 static int __init choose_lsm(char *str)
  82 {
  83         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  84         return 1;
  85 }
  86 __setup("security=", choose_lsm);
  87
  88 /**
  89  * security_module_enable - Load given security module on boot ?
  90  * @ops: a pointer to the struct security_operations that is to be checked.
  91  *
  92  * Each LSM must pass this method before registering its own operations
  93  * to avoid security registration races. This method may also be used
  94  * to check if your LSM is currently loaded during kernel initialization.
  95  *
  96  * Return true if:
  97  *      -The passed LSM is the one chosen by user at boot time,
  98  *      -or the passed LSM is configured as the default and the user did not
  99  *       choose an alternate LSM at boot time.
 100  * Otherwise, return false.
 101  */
 102 int __init security_module_enable(struct security_operations *ops)
 103 {
 104         return !strcmp(ops->name, chosen_lsm);
 105 }
 106
 107 /**
 108  * register_security - registers a security framework with the kernel
 109  * @ops: a pointer to the struct security_options that is to be registered
 110  *
 111  * This function allows a security module to register itself with the
 112  * kernel security subsystem.  Some rudimentary checking is done on the @ops
 113  * value passed to this function. You'll need to check first if your LSM
 114  * is allowed to register its @ops by calling security_module_enable(@ops).
 115  *
 116  * If there is already a security module registered with the kernel,
 117  * an error will be returned.  Otherwise %0 is returned on success.
 118  */
 119 int __init register_security(struct security_operations *ops)
 120 {
 121         if (verify(ops)) {
 122                 printk(KERN_DEBUG "%s could not verify "
 123                        "security_operations structure.\n", __func__);
 124                 return -EINVAL;
 125         }
 126
 127         if (security_ops != &default_security_ops)
 128                 return -EAGAIN;
 129
 130         security_ops = ops;
 131
 132         return 0;
 133 }
 134
 135 /* Security operations */
 136
 137 int security_binder_set_context_mgr(struct task_struct *mgr)
 138 {
 139         return security_ops->binder_set_context_mgr(mgr);
 140 }
 141
 142 int security_binder_transaction(struct task_struct *from, struct task_struct *to)
 143 {
 144         return security_ops->binder_transaction(from, to);
 145 }
 146
 147 int security_binder_transfer_binder(struct task_struct *from, struct task_struct *to)
 148 {
 149         return security_ops->binder_transfer_binder(from, to);
 150 }
 151
 152 int security_binder_transfer_file(struct task_struct *from, struct task_struct *to, struct file *file)
 153 {
 154         return security_ops->binder_transfer_file(from, to, file);
 155 }
 156
 157 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 158 {
 159 #ifdef CONFIG_SECURITY_YAMA_STACKED
 160         int rc;
 161         rc = yama_ptrace_access_check(child, mode);
 162         if (rc)
 163                 return rc;
 164 #endif
 165         return security_ops->ptrace_access_check(child, mode);
 166 }
 167
 168 int security_ptrace_traceme(struct task_struct *parent)
 169 {
 170 #ifdef CONFIG_SECURITY_YAMA_STACKED
 171         int rc;
 172         rc = yama_ptrace_traceme(parent);
 173         if (rc)
 174                 return rc;
 175 #endif
 176         return security_ops->ptrace_traceme(parent);
 177 }
 178
 179 int security_capget(struct task_struct *target,
 180                      kernel_cap_t *effective,
 181                      kernel_cap_t *inheritable,
 182                      kernel_cap_t *permitted)
 183 {
 184         return security_ops->capget(target, effective, inheritable, permitted);
 185 }
 186
 187 int security_capset(struct cred *new, const struct cred *old,
 188                     const kernel_cap_t *effective,
 189                     const kernel_cap_t *inheritable,
 190                     const kernel_cap_t *permitted)
 191 {
 192         return security_ops->capset(new, old,
 193                                     effective, inheritable, permitted);
 194 }
 195
 196 int security_capable(const struct cred *cred, struct user_namespace *ns,
 197                      int cap)
 198 {
 199         return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 200 }
 201
 202 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 203                              int cap)
 204 {
 205         return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
 206 }
 207
 208 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 209 {
 210         return security_ops->quotactl(cmds, type, id, sb);
 211 }
 212
 213 int security_quota_on(struct dentry *dentry)
 214 {
 215         return security_ops->quota_on(dentry);
 216 }
 217
 218 int security_syslog(int type)
 219 {
 220         return security_ops->syslog(type);
 221 }
 222
 223 int security_settime(const struct timespec *ts, const struct timezone *tz)
 224 {
 225         return security_ops->settime(ts, tz);
 226 }
 227
 228 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 229 {
 230         return security_ops->vm_enough_memory(mm, pages);
 231 }
 232
 233 int security_bprm_set_creds(struct linux_binprm *bprm)
 234 {
 235         return security_ops->bprm_set_creds(bprm);
 236 }
 237
 238 int security_bprm_check(struct linux_binprm *bprm)
 239 {
 240         int ret;
 241
 242         ret = security_ops->bprm_check_security(bprm);
 243         if (ret)
 244                 return ret;
 245         return ima_bprm_check(bprm);
 246 }
 247
 248 void security_bprm_committing_creds(struct linux_binprm *bprm)
 249 {
 250         security_ops->bprm_committing_creds(bprm);
 251 }
 252
 253 void security_bprm_committed_creds(struct linux_binprm *bprm)
 254 {
 255         security_ops->bprm_committed_creds(bprm);
 256 }
 257
 258 int security_bprm_secureexec(struct linux_binprm *bprm)
 259 {
 260         return security_ops->bprm_secureexec(bprm);
 261 }
 262
 263 int security_sb_alloc(struct super_block *sb)
 264 {
 265         return security_ops->sb_alloc_security(sb);
 266 }
 267
 268 void security_sb_free(struct super_block *sb)
 269 {
 270         security_ops->sb_free_security(sb);
 271 }
 272
 273 int security_sb_copy_data(char *orig, char *copy)
 274 {
 275         return security_ops->sb_copy_data(orig, copy);
 276 }
 277 EXPORT_SYMBOL(security_sb_copy_data);
 278
 279 int security_sb_remount(struct super_block *sb, void *data)
 280 {
 281         return security_ops->sb_remount(sb, data);
 282 }
 283
 284 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 285 {
 286         return security_ops->sb_kern_mount(sb, flags, data);
 287 }
 288
 289 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 290 {
 291         return security_ops->sb_show_options(m, sb);
 292 }
 293
 294 int security_sb_statfs(struct dentry *dentry)
 295 {
 296         return security_ops->sb_statfs(dentry);
 297 }
 298
 299 int security_sb_mount(const char *dev_name, struct path *path,
 300                        const char *type, unsigned long flags, void *data)
 301 {
 302         return security_ops->sb_mount(dev_name, path, type, flags, data);
 303 }
 304
 305 int security_sb_umount(struct vfsmount *mnt, int flags)
 306 {
 307         return security_ops->sb_umount(mnt, flags);
 308 }
 309
 310 int security_sb_pivotroot(struct path *old_path, struct path *new_path)
 311 {
 312         return security_ops->sb_pivotroot(old_path, new_path);
 313 }
 314
 315 int security_sb_set_mnt_opts(struct super_block *sb,
 316                                 struct security_mnt_opts *opts)
 317 {
 318         return security_ops->sb_set_mnt_opts(sb, opts);
 319 }
 320 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 321
 322 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 323                                 struct super_block *newsb)
 324 {
 325         return security_ops->sb_clone_mnt_opts(oldsb, newsb);
 326 }
 327 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 328
 329 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 330 {
 331         return security_ops->sb_parse_opts_str(options, opts);
 332 }
 333 EXPORT_SYMBOL(security_sb_parse_opts_str);
 334
 335 int security_inode_alloc(struct inode *inode)
 336 {
 337         inode->i_security = NULL;
 338         return security_ops->inode_alloc_security(inode);
 339 }
 340
 341 void security_inode_free(struct inode *inode)
 342 {
 343         integrity_inode_free(inode);
 344         security_ops->inode_free_security(inode);
 345 }
 346
 347 int security_inode_init_security(struct inode *inode, struct inode *dir,
 348                                  const struct qstr *qstr,
 349                                  const initxattrs initxattrs, void *fs_data)
 350 {
 351         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
 352         struct xattr *lsm_xattr, *evm_xattr, *xattr;
 353         int ret;
 354
 355         if (unlikely(IS_PRIVATE(inode)))
 356                 return 0;
 357
 358         memset(new_xattrs, 0, sizeof new_xattrs);
 359         if (!initxattrs)
 360                 return security_ops->inode_init_security(inode, dir, qstr,
 361                                                          NULL, NULL, NULL);
 362         lsm_xattr = new_xattrs;
 363         ret = security_ops->inode_init_security(inode, dir, qstr,
 364                                                 &lsm_xattr->name,
 365                                                 &lsm_xattr->value,
 366                                                 &lsm_xattr->value_len);
 367         if (ret)
 368                 goto out;
 369
 370         evm_xattr = lsm_xattr + 1;
 371         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
 372         if (ret)
 373                 goto out;
 374         ret = initxattrs(inode, new_xattrs, fs_data);
 375 out:
 376         for (xattr = new_xattrs; xattr->name != NULL; xattr++) {
 377                 kfree(xattr->name);
 378                 kfree(xattr->value);
 379         }
 380         return (ret == -EOPNOTSUPP) ? 0 : ret;
 381 }
 382 EXPORT_SYMBOL(security_inode_init_security);
 383
 384 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 385                                      const struct qstr *qstr, char **name,
 386                                      void **value, size_t *len)
 387 {
 388         if (unlikely(IS_PRIVATE(inode)))
 389                 return -EOPNOTSUPP;
 390         return security_ops->inode_init_security(inode, dir, qstr, name, value,
 391                                                  len);
 392 }
 393 EXPORT_SYMBOL(security_old_inode_init_security);
 394
 395 #ifdef CONFIG_SECURITY_PATH
 396 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
 397                         unsigned int dev)
 398 {
 399         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 400                 return 0;
 401         return security_ops->path_mknod(dir, dentry, mode, dev);
 402 }
 403 EXPORT_SYMBOL(security_path_mknod);
 404
 405 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
 406 {
 407         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 408                 return 0;
 409         return security_ops->path_mkdir(dir, dentry, mode);
 410 }
 411 EXPORT_SYMBOL(security_path_mkdir);
 412
 413 int security_path_rmdir(struct path *dir, struct dentry *dentry)
 414 {
 415         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 416                 return 0;
 417         return security_ops->path_rmdir(dir, dentry);
 418 }
 419
 420 int security_path_unlink(struct path *dir, struct dentry *dentry)
 421 {
 422         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 423                 return 0;
 424         return security_ops->path_unlink(dir, dentry);
 425 }
 426 EXPORT_SYMBOL(security_path_unlink);
 427
 428 int security_path_symlink(struct path *dir, struct dentry *dentry,
 429                           const char *old_name)
 430 {
 431         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 432                 return 0;
 433         return security_ops->path_symlink(dir, dentry, old_name);
 434 }
 435
 436 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
 437                        struct dentry *new_dentry)
 438 {
 439         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 440                 return 0;
 441         return security_ops->path_link(old_dentry, new_dir, new_dentry);
 442 }
 443
 444 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
 445                          struct path *new_dir, struct dentry *new_dentry)
 446 {
 447         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 448                      (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 449                 return 0;
 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 {
 538         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 539             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 540                 return 0;
 541         return security_ops->inode_rename(old_dir, old_dentry,
 542                                            new_dir, new_dentry);
 543 }
 544
 545 int security_inode_readlink(struct dentry *dentry)
 546 {
 547         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 548                 return 0;
 549         return security_ops->inode_readlink(dentry);
 550 }
 551
 552 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 553 {
 554         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 555                 return 0;
 556         return security_ops->inode_follow_link(dentry, nd);
 557 }
 558
 559 int security_inode_permission(struct inode *inode, int mask)
 560 {
 561         if (unlikely(IS_PRIVATE(inode)))
 562                 return 0;
 563         return security_ops->inode_permission(inode, mask);
 564 }
 565
 566 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 567 {
 568         int ret;
 569
 570         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 571                 return 0;
 572         ret = security_ops->inode_setattr(dentry, attr);
 573         if (ret)
 574                 return ret;
 575         return evm_inode_setattr(dentry, attr);
 576 }
 577 EXPORT_SYMBOL_GPL(security_inode_setattr);
 578
 579 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 580 {
 581         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 582                 return 0;
 583         return security_ops->inode_getattr(mnt, dentry);
 584 }
 585
 586 int security_inode_setxattr(struct dentry *dentry, const char *name,
 587                             const void *value, size_t size, int flags)
 588 {
 589         int ret;
 590
 591         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 592                 return 0;
 593         ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
 594         if (ret)
 595                 return ret;
 596         ret = ima_inode_setxattr(dentry, name, value, size);
 597         if (ret)
 598                 return ret;
 599         return evm_inode_setxattr(dentry, name, value, size);
 600 }
 601
 602 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 603                                   const void *value, size_t size, int flags)
 604 {
 605         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 606                 return;
 607         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 608         evm_inode_post_setxattr(dentry, name, value, size);
 609 }
 610
 611 int security_inode_getxattr(struct dentry *dentry, const char *name)
 612 {
 613         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 614                 return 0;
 615         return security_ops->inode_getxattr(dentry, name);
 616 }
 617
 618 int security_inode_listxattr(struct dentry *dentry)
 619 {
 620         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 621                 return 0;
 622         return security_ops->inode_listxattr(dentry);
 623 }
 624
 625 int security_inode_removexattr(struct dentry *dentry, const char *name)
 626 {
 627         int ret;
 628
 629         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 630                 return 0;
 631         ret = security_ops->inode_removexattr(dentry, name);
 632         if (ret)
 633                 return ret;
 634         ret = ima_inode_removexattr(dentry, name);
 635         if (ret)
 636                 return ret;
 637         return evm_inode_removexattr(dentry, name);
 638 }
 639
 640 int security_inode_need_killpriv(struct dentry *dentry)
 641 {
 642         return security_ops->inode_need_killpriv(dentry);
 643 }
 644
 645 int security_inode_killpriv(struct dentry *dentry)
 646 {
 647         return security_ops->inode_killpriv(dentry);
 648 }
 649
 650 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 651 {
 652         if (unlikely(IS_PRIVATE(inode)))
 653                 return -EOPNOTSUPP;
 654         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 655 }
 656
 657 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 658 {
 659         if (unlikely(IS_PRIVATE(inode)))
 660                 return -EOPNOTSUPP;
 661         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 662 }
 663
 664 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 665 {
 666         if (unlikely(IS_PRIVATE(inode)))
 667                 return 0;
 668         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 669 }
 670
 671 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 672 {
 673         security_ops->inode_getsecid(inode, secid);
 674 }
 675
 676 int security_file_permission(struct file *file, int mask)
 677 {
 678         int ret;
 679
 680         ret = security_ops->file_permission(file, mask);
 681         if (ret)
 682                 return ret;
 683
 684         return fsnotify_perm(file, mask);
 685 }
 686
 687 int security_file_alloc(struct file *file)
 688 {
 689         return security_ops->file_alloc_security(file);
 690 }
 691
 692 void security_file_free(struct file *file)
 693 {
 694         security_ops->file_free_security(file);
 695 }
 696
 697 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 698 {
 699         return security_ops->file_ioctl(file, cmd, arg);
 700 }
 701
 702 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
 703 {
 704         /*
 705          * Does we have PROT_READ and does the application expect
 706          * it to imply PROT_EXEC?  If not, nothing to talk about...
 707          */
 708         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
 709                 return prot;
 710         if (!(current->personality & READ_IMPLIES_EXEC))
 711                 return prot;
 712         /*
 713          * if that's an anonymous mapping, let it.
 714          */
 715         if (!file)
 716                 return prot | PROT_EXEC;
 717         /*
 718          * ditto if it's not on noexec mount, except that on !MMU we need
 719          * BDI_CAP_EXEC_MMAP (== VM_MAYEXEC) in this case
 720          */
 721         if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) {
 722 #ifndef CONFIG_MMU
 723                 unsigned long caps = 0;
 724                 struct address_space *mapping = file->f_mapping;
 725                 if (mapping && mapping->backing_dev_info)
 726                         caps = mapping->backing_dev_info->capabilities;
 727                 if (!(caps & BDI_CAP_EXEC_MAP))
 728                         return prot;
 729 #endif
 730                 return prot | PROT_EXEC;
 731         }
 732         /* anything on noexec mount won't get PROT_EXEC */
 733         return prot;
 734 }
 735
 736 int security_mmap_file(struct file *file, unsigned long prot,
 737                         unsigned long flags)
 738 {
 739         int ret;
 740         ret = security_ops->mmap_file(file, prot,
 741                                         mmap_prot(file, prot), flags);
 742         if (ret)
 743                 return ret;
 744         return ima_file_mmap(file, prot);
 745 }
 746
 747 int security_mmap_addr(unsigned long addr)
 748 {
 749         return security_ops->mmap_addr(addr);
 750 }
 751
 752 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 753                             unsigned long prot)
 754 {
 755         return security_ops->file_mprotect(vma, reqprot, prot);
 756 }
 757
 758 int security_file_lock(struct file *file, unsigned int cmd)
 759 {
 760         return security_ops->file_lock(file, cmd);
 761 }
 762
 763 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 764 {
 765         return security_ops->file_fcntl(file, cmd, arg);
 766 }
 767
 768 int security_file_set_fowner(struct file *file)
 769 {
 770         return security_ops->file_set_fowner(file);
 771 }
 772
 773 int security_file_send_sigiotask(struct task_struct *tsk,
 774                                   struct fown_struct *fown, int sig)
 775 {
 776         return security_ops->file_send_sigiotask(tsk, fown, sig);
 777 }
 778
 779 int security_file_receive(struct file *file)
 780 {
 781         return security_ops->file_receive(file);
 782 }
 783
 784 int security_file_open(struct file *file, const struct cred *cred)
 785 {
 786         int ret;
 787
 788         ret = security_ops->file_open(file, cred);
 789         if (ret)
 790                 return ret;
 791
 792         return fsnotify_perm(file, MAY_OPEN);
 793 }
 794
 795 int security_task_create(unsigned long clone_flags)
 796 {
 797         return security_ops->task_create(clone_flags);
 798 }
 799
 800 void security_task_free(struct task_struct *task)
 801 {
 802 #ifdef CONFIG_SECURITY_YAMA_STACKED
 803         yama_task_free(task);
 804 #endif
 805         security_ops->task_free(task);
 806 }
 807
 808 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 809 {
 810         return security_ops->cred_alloc_blank(cred, gfp);
 811 }
 812
 813 void security_cred_free(struct cred *cred)
 814 {
 815         security_ops->cred_free(cred);
 816 }
 817
 818 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 819 {
 820         return security_ops->cred_prepare(new, old, gfp);
 821 }
 822
 823 void security_transfer_creds(struct cred *new, const struct cred *old)
 824 {
 825         security_ops->cred_transfer(new, old);
 826 }
 827
 828 int security_kernel_act_as(struct cred *new, u32 secid)
 829 {
 830         return security_ops->kernel_act_as(new, secid);
 831 }
 832
 833 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 834 {
 835         return security_ops->kernel_create_files_as(new, inode);
 836 }
 837
 838 int security_kernel_module_request(char *kmod_name)
 839 {
 840         return security_ops->kernel_module_request(kmod_name);
 841 }
 842
 843 int security_kernel_module_from_file(struct file *file)
 844 {
 845         int ret;
 846
 847         ret = security_ops->kernel_module_from_file(file);
 848         if (ret)
 849                 return ret;
 850         return ima_module_check(file);
 851 }
 852
 853 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 854                              int flags)
 855 {
 856         return security_ops->task_fix_setuid(new, old, flags);
 857 }
 858
 859 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 860 {
 861         return security_ops->task_setpgid(p, pgid);
 862 }
 863
 864 int security_task_getpgid(struct task_struct *p)
 865 {
 866         return security_ops->task_getpgid(p);
 867 }
 868
 869 int security_task_getsid(struct task_struct *p)
 870 {
 871         return security_ops->task_getsid(p);
 872 }
 873
 874 void security_task_getsecid(struct task_struct *p, u32 *secid)
 875 {
 876         security_ops->task_getsecid(p, secid);
 877 }
 878 EXPORT_SYMBOL(security_task_getsecid);
 879
 880 int security_task_setnice(struct task_struct *p, int nice)
 881 {
 882         return security_ops->task_setnice(p, nice);
 883 }
 884
 885 int security_task_setioprio(struct task_struct *p, int ioprio)
 886 {
 887         return security_ops->task_setioprio(p, ioprio);
 888 }
 889
 890 int security_task_getioprio(struct task_struct *p)
 891 {
 892         return security_ops->task_getioprio(p);
 893 }
 894
 895 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 896                 struct rlimit *new_rlim)
 897 {
 898         return security_ops->task_setrlimit(p, resource, new_rlim);
 899 }
 900
 901 int security_task_setscheduler(struct task_struct *p)
 902 {
 903         return security_ops->task_setscheduler(p);
 904 }
 905
 906 int security_task_getscheduler(struct task_struct *p)
 907 {
 908         return security_ops->task_getscheduler(p);
 909 }
 910
 911 int security_task_movememory(struct task_struct *p)
 912 {
 913         return security_ops->task_movememory(p);
 914 }
 915
 916 int security_task_kill(struct task_struct *p, struct siginfo *info,
 917                         int sig, u32 secid)
 918 {
 919         return security_ops->task_kill(p, info, sig, secid);
 920 }
 921
 922 int security_task_wait(struct task_struct *p)
 923 {
 924         return security_ops->task_wait(p);
 925 }
 926
 927 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 928                          unsigned long arg4, unsigned long arg5)
 929 {
 930 #ifdef CONFIG_SECURITY_YAMA_STACKED
 931         int rc;
 932         rc = yama_task_prctl(option, arg2, arg3, arg4, arg5);
 933         if (rc != -ENOSYS)
 934                 return rc;
 935 #endif
 936         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 937 }
 938
 939 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 940 {
 941         security_ops->task_to_inode(p, inode);
 942 }
 943
 944 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 945 {
 946         return security_ops->ipc_permission(ipcp, flag);
 947 }
 948
 949 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 950 {
 951         security_ops->ipc_getsecid(ipcp, secid);
 952 }
 953
 954 int security_msg_msg_alloc(struct msg_msg *msg)
 955 {
 956         return security_ops->msg_msg_alloc_security(msg);
 957 }
 958
 959 void security_msg_msg_free(struct msg_msg *msg)
 960 {
 961         security_ops->msg_msg_free_security(msg);
 962 }
 963
 964 int security_msg_queue_alloc(struct msg_queue *msq)
 965 {
 966         return security_ops->msg_queue_alloc_security(msq);
 967 }
 968
 969 void security_msg_queue_free(struct msg_queue *msq)
 970 {
 971         security_ops->msg_queue_free_security(msq);
 972 }
 973
 974 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 975 {
 976         return security_ops->msg_queue_associate(msq, msqflg);
 977 }
 978
 979 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 980 {
 981         return security_ops->msg_queue_msgctl(msq, cmd);
 982 }
 983
 984 int security_msg_queue_msgsnd(struct msg_queue *msq,
 985                                struct msg_msg *msg, int msqflg)
 986 {
 987         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 988 }
 989
 990 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 991                                struct task_struct *target, long type, int mode)
 992 {
 993         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 994 }
 995
 996 int security_shm_alloc(struct shmid_kernel *shp)
 997 {
 998         return security_ops->shm_alloc_security(shp);
 999 }
1000
1001 void security_shm_free(struct shmid_kernel *shp)
1002 {
1003         security_ops->shm_free_security(shp);
1004 }
1005
1006 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1007 {
1008         return security_ops->shm_associate(shp, shmflg);
1009 }
1010
1011 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1012 {
1013         return security_ops->shm_shmctl(shp, cmd);
1014 }
1015
1016 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1017 {
1018         return security_ops->shm_shmat(shp, shmaddr, shmflg);
1019 }
1020
1021 int security_sem_alloc(struct sem_array *sma)
1022 {
1023         return security_ops->sem_alloc_security(sma);
1024 }
1025
1026 void security_sem_free(struct sem_array *sma)
1027 {
1028         security_ops->sem_free_security(sma);
1029 }
1030
1031 int security_sem_associate(struct sem_array *sma, int semflg)
1032 {
1033         return security_ops->sem_associate(sma, semflg);
1034 }
1035
1036 int security_sem_semctl(struct sem_array *sma, int cmd)
1037 {
1038         return security_ops->sem_semctl(sma, cmd);
1039 }
1040
1041 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1042                         unsigned nsops, int alter)
1043 {
1044         return security_ops->sem_semop(sma, sops, nsops, alter);
1045 }
1046
1047 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1048 {
1049         if (unlikely(inode && IS_PRIVATE(inode)))
1050                 return;
1051         security_ops->d_instantiate(dentry, inode);
1052 }
1053 EXPORT_SYMBOL(security_d_instantiate);
1054
1055 int security_getprocattr(struct task_struct *p, char *name, char **value)
1056 {
1057         return security_ops->getprocattr(p, name, value);
1058 }
1059
1060 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
1061 {
1062         return security_ops->setprocattr(p, name, value, size);
1063 }
1064
1065 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1066 {
1067         return security_ops->netlink_send(sk, skb);
1068 }
1069
1070 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1071 {
1072         return security_ops->secid_to_secctx(secid, secdata, seclen);
1073 }
1074 EXPORT_SYMBOL(security_secid_to_secctx);
1075
1076 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1077 {
1078         return security_ops->secctx_to_secid(secdata, seclen, secid);
1079 }
1080 EXPORT_SYMBOL(security_secctx_to_secid);
1081
1082 void security_release_secctx(char *secdata, u32 seclen)
1083 {
1084         security_ops->release_secctx(secdata, seclen);
1085 }
1086 EXPORT_SYMBOL(security_release_secctx);
1087
1088 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1089 {
1090         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1091 }
1092 EXPORT_SYMBOL(security_inode_notifysecctx);
1093
1094 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1095 {
1096         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1097 }
1098 EXPORT_SYMBOL(security_inode_setsecctx);
1099
1100 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1101 {
1102         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1103 }
1104 EXPORT_SYMBOL(security_inode_getsecctx);
1105
1106 #ifdef CONFIG_SECURITY_NETWORK
1107
1108 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1109 {
1110         return security_ops->unix_stream_connect(sock, other, newsk);
1111 }
1112 EXPORT_SYMBOL(security_unix_stream_connect);
1113
1114 int security_unix_may_send(struct socket *sock,  struct socket *other)
1115 {
1116         return security_ops->unix_may_send(sock, other);
1117 }
1118 EXPORT_SYMBOL(security_unix_may_send);
1119
1120 int security_socket_create(int family, int type, int protocol, int kern)
1121 {
1122         return security_ops->socket_create(family, type, protocol, kern);
1123 }
1124
1125 int security_socket_post_create(struct socket *sock, int family,
1126                                 int type, int protocol, int kern)
1127 {
1128         return security_ops->socket_post_create(sock, family, type,
1129                                                 protocol, kern);
1130 }
1131
1132 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1133 {
1134         return security_ops->socket_bind(sock, address, addrlen);
1135 }
1136
1137 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1138 {
1139         return security_ops->socket_connect(sock, address, addrlen);
1140 }
1141
1142 int security_socket_listen(struct socket *sock, int backlog)
1143 {
1144         return security_ops->socket_listen(sock, backlog);
1145 }
1146
1147 int security_socket_accept(struct socket *sock, struct socket *newsock)
1148 {
1149         return security_ops->socket_accept(sock, newsock);
1150 }
1151
1152 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1153 {
1154         return security_ops->socket_sendmsg(sock, msg, size);
1155 }
1156
1157 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1158                             int size, int flags)
1159 {
1160         return security_ops->socket_recvmsg(sock, msg, size, flags);
1161 }
1162
1163 int security_socket_getsockname(struct socket *sock)
1164 {
1165         return security_ops->socket_getsockname(sock);
1166 }
1167
1168 int security_socket_getpeername(struct socket *sock)
1169 {
1170         return security_ops->socket_getpeername(sock);
1171 }
1172
1173 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1174 {
1175         return security_ops->socket_getsockopt(sock, level, optname);
1176 }
1177
1178 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1179 {
1180         return security_ops->socket_setsockopt(sock, level, optname);
1181 }
1182
1183 int security_socket_shutdown(struct socket *sock, int how)
1184 {
1185         return security_ops->socket_shutdown(sock, how);
1186 }
1187
1188 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1189 {
1190         return security_ops->socket_sock_rcv_skb(sk, skb);
1191 }
1192 EXPORT_SYMBOL(security_sock_rcv_skb);
1193
1194 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1195                                       int __user *optlen, unsigned len)
1196 {
1197         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1198 }
1199
1200 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1201 {
1202         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1203 }
1204 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1205
1206 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1207 {
1208         return security_ops->sk_alloc_security(sk, family, priority);
1209 }
1210
1211 void security_sk_free(struct sock *sk)
1212 {
1213         security_ops->sk_free_security(sk);
1214 }
1215
1216 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1217 {
1218         security_ops->sk_clone_security(sk, newsk);
1219 }
1220 EXPORT_SYMBOL(security_sk_clone);
1221
1222 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1223 {
1224         security_ops->sk_getsecid(sk, &fl->flowi_secid);
1225 }
1226 EXPORT_SYMBOL(security_sk_classify_flow);
1227
1228 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1229 {
1230         security_ops->req_classify_flow(req, fl);
1231 }
1232 EXPORT_SYMBOL(security_req_classify_flow);
1233
1234 void security_sock_graft(struct sock *sk, struct socket *parent)
1235 {
1236         security_ops->sock_graft(sk, parent);
1237 }
1238 EXPORT_SYMBOL(security_sock_graft);
1239
1240 int security_inet_conn_request(struct sock *sk,
1241                         struct sk_buff *skb, struct request_sock *req)
1242 {
1243         return security_ops->inet_conn_request(sk, skb, req);
1244 }
1245 EXPORT_SYMBOL(security_inet_conn_request);
1246
1247 void security_inet_csk_clone(struct sock *newsk,
1248                         const struct request_sock *req)
1249 {
1250         security_ops->inet_csk_clone(newsk, req);
1251 }
1252
1253 void security_inet_conn_established(struct sock *sk,
1254                         struct sk_buff *skb)
1255 {
1256         security_ops->inet_conn_established(sk, skb);
1257 }
1258
1259 int security_secmark_relabel_packet(u32 secid)
1260 {
1261         return security_ops->secmark_relabel_packet(secid);
1262 }
1263 EXPORT_SYMBOL(security_secmark_relabel_packet);
1264
1265 void security_secmark_refcount_inc(void)
1266 {
1267         security_ops->secmark_refcount_inc();
1268 }
1269 EXPORT_SYMBOL(security_secmark_refcount_inc);
1270
1271 void security_secmark_refcount_dec(void)
1272 {
1273         security_ops->secmark_refcount_dec();
1274 }
1275 EXPORT_SYMBOL(security_secmark_refcount_dec);
1276
1277 int security_tun_dev_alloc_security(void **security)
1278 {
1279         return security_ops->tun_dev_alloc_security(security);
1280 }
1281 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1282
1283 void security_tun_dev_free_security(void *security)
1284 {
1285         security_ops->tun_dev_free_security(security);
1286 }
1287 EXPORT_SYMBOL(security_tun_dev_free_security);
1288
1289 int security_tun_dev_create(void)
1290 {
1291         return security_ops->tun_dev_create();
1292 }
1293 EXPORT_SYMBOL(security_tun_dev_create);
1294
1295 int security_tun_dev_attach_queue(void *security)
1296 {
1297         return security_ops->tun_dev_attach_queue(security);
1298 }
1299 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1300
1301 int security_tun_dev_attach(struct sock *sk, void *security)
1302 {
1303         return security_ops->tun_dev_attach(sk, security);
1304 }
1305 EXPORT_SYMBOL(security_tun_dev_attach);
1306
1307 int security_tun_dev_open(void *security)
1308 {
1309         return security_ops->tun_dev_open(security);
1310 }
1311 EXPORT_SYMBOL(security_tun_dev_open);
1312
1313 void security_skb_owned_by(struct sk_buff *skb, struct sock *sk)
1314 {
1315         security_ops->skb_owned_by(skb, sk);
1316 }
1317
1318 #endif  /* CONFIG_SECURITY_NETWORK */
1319
1320 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1321
1322 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1323 {
1324         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1325 }
1326 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1327
1328 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1329                               struct xfrm_sec_ctx **new_ctxp)
1330 {
1331         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1332 }
1333
1334 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1335 {
1336         security_ops->xfrm_policy_free_security(ctx);
1337 }
1338 EXPORT_SYMBOL(security_xfrm_policy_free);
1339
1340 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1341 {
1342         return security_ops->xfrm_policy_delete_security(ctx);
1343 }
1344
1345 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1346 {
1347         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1348 }
1349 EXPORT_SYMBOL(security_xfrm_state_alloc);
1350
1351 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1352                                       struct xfrm_sec_ctx *polsec, u32 secid)
1353 {
1354         if (!polsec)
1355                 return 0;
1356         /*
1357          * We want the context to be taken from secid which is usually
1358          * from the sock.
1359          */
1360         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1361 }
1362
1363 int security_xfrm_state_delete(struct xfrm_state *x)
1364 {
1365         return security_ops->xfrm_state_delete_security(x);
1366 }
1367 EXPORT_SYMBOL(security_xfrm_state_delete);
1368
1369 void security_xfrm_state_free(struct xfrm_state *x)
1370 {
1371         security_ops->xfrm_state_free_security(x);
1372 }
1373
1374 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1375 {
1376         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1377 }
1378
1379 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1380                                        struct xfrm_policy *xp,
1381                                        const struct flowi *fl)
1382 {
1383         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1384 }
1385
1386 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1387 {
1388         return security_ops->xfrm_decode_session(skb, secid, 1);
1389 }
1390
1391 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1392 {
1393         int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1394
1395         BUG_ON(rc);
1396 }
1397 EXPORT_SYMBOL(security_skb_classify_flow);
1398
1399 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1400
1401 #ifdef CONFIG_KEYS
1402
1403 int security_key_alloc(struct key *key, const struct cred *cred,
1404                        unsigned long flags)
1405 {
1406         return security_ops->key_alloc(key, cred, flags);
1407 }
1408
1409 void security_key_free(struct key *key)
1410 {
1411         security_ops->key_free(key);
1412 }
1413
1414 int security_key_permission(key_ref_t key_ref,
1415                             const struct cred *cred, key_perm_t perm)
1416 {
1417         return security_ops->key_permission(key_ref, cred, perm);
1418 }
1419
1420 int security_key_getsecurity(struct key *key, char **_buffer)
1421 {
1422         return security_ops->key_getsecurity(key, _buffer);
1423 }
1424
1425 #endif  /* CONFIG_KEYS */
1426
1427 #ifdef CONFIG_AUDIT
1428
1429 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1430 {
1431         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1432 }
1433
1434 int security_audit_rule_known(struct audit_krule *krule)
1435 {
1436         return security_ops->audit_rule_known(krule);
1437 }
1438
1439 void security_audit_rule_free(void *lsmrule)
1440 {
1441         security_ops->audit_rule_free(lsmrule);
1442 }
1443
1444 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1445                               struct audit_context *actx)
1446 {
1447         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1448 }
1449
1450 #endif /* CONFIG_AUDIT */