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