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