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