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