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
  20 /* Boot-time LSM user choice */
  21 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1];
  22
  23 /* things that live in capability.c */
  24 extern struct security_operations default_security_ops;
  25 extern void security_fixup_ops(struct security_operations *ops);
  26
  27 struct security_operations *security_ops;       /* Initialized to NULL */
  28
  29 static inline int verify(struct security_operations *ops)
  30 {
  31         /* verify the security_operations structure exists */
  32         if (!ops)
  33                 return -EINVAL;
  34         security_fixup_ops(ops);
  35         return 0;
  36 }
  37
  38 static void __init do_security_initcalls(void)
  39 {
  40         initcall_t *call;
  41         call = __security_initcall_start;
  42         while (call < __security_initcall_end) {
  43                 (*call) ();
  44                 call++;
  45         }
  46 }
  47
  48 /**
  49  * security_init - initializes the security framework
  50  *
  51  * This should be called early in the kernel initialization sequence.
  52  */
  53 int __init security_init(void)
  54 {
  55         printk(KERN_INFO "Security Framework initialized\n");
  56
  57         security_fixup_ops(&default_security_ops);
  58         security_ops = &default_security_ops;
  59         do_security_initcalls();
  60
  61         return 0;
  62 }
  63
  64 /* Save user chosen LSM */
  65 static int __init choose_lsm(char *str)
  66 {
  67         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  68         return 1;
  69 }
  70 __setup("security=", choose_lsm);
  71
  72 /**
  73  * security_module_enable - Load given security module on boot ?
  74  * @ops: a pointer to the struct security_operations that is to be checked.
  75  *
  76  * Each LSM must pass this method before registering its own operations
  77  * to avoid security registration races. This method may also be used
  78  * to check if your LSM is currently loaded during kernel initialization.
  79  *
  80  * Return true if:
  81  *      -The passed LSM is the one chosen by user at boot time,
  82  *      -or user didn't specify a specific LSM and we're the first to ask
  83  *       for registration permission,
  84  *      -or the passed LSM is currently loaded.
  85  * Otherwise, return false.
  86  */
  87 int __init security_module_enable(struct security_operations *ops)
  88 {
  89         if (!*chosen_lsm)
  90                 strncpy(chosen_lsm, ops->name, SECURITY_NAME_MAX);
  91         else if (strncmp(ops->name, chosen_lsm, SECURITY_NAME_MAX))
  92                 return 0;
  93
  94         return 1;
  95 }
  96
  97 /**
  98  * register_security - registers a security framework with the kernel
  99  * @ops: a pointer to the struct security_options that is to be registered
 100  *
 101  * This function allows a security module to register itself with the
 102  * kernel security subsystem.  Some rudimentary checking is done on the @ops
 103  * value passed to this function. You'll need to check first if your LSM
 104  * is allowed to register its @ops by calling security_module_enable(@ops).
 105  *
 106  * If there is already a security module registered with the kernel,
 107  * an error will be returned.  Otherwise %0 is returned on success.
 108  */
 109 int register_security(struct security_operations *ops)
 110 {
 111         if (verify(ops)) {
 112                 printk(KERN_DEBUG "%s could not verify "
 113                        "security_operations structure.\n", __func__);
 114                 return -EINVAL;
 115         }
 116
 117         if (security_ops != &default_security_ops)
 118                 return -EAGAIN;
 119
 120         security_ops = ops;
 121
 122         return 0;
 123 }
 124
 125 /* Security operations */
 126
 127 int security_ptrace_may_access(struct task_struct *child, unsigned int mode)
 128 {
 129         return security_ops->ptrace_may_access(child, mode);
 130 }
 131
 132 int security_ptrace_traceme(struct task_struct *parent)
 133 {
 134         return security_ops->ptrace_traceme(parent);
 135 }
 136
 137 int security_capget(struct task_struct *target,
 138                      kernel_cap_t *effective,
 139                      kernel_cap_t *inheritable,
 140                      kernel_cap_t *permitted)
 141 {
 142         return security_ops->capget(target, effective, inheritable, permitted);
 143 }
 144
 145 int security_capset(struct cred *new, const struct cred *old,
 146                     const kernel_cap_t *effective,
 147                     const kernel_cap_t *inheritable,
 148                     const kernel_cap_t *permitted)
 149 {
 150         return security_ops->capset(new, old,
 151                                     effective, inheritable, permitted);
 152 }
 153
 154 int security_capable(int cap)
 155 {
 156         return security_ops->capable(current, current_cred(), cap,
 157                                      SECURITY_CAP_AUDIT);
 158 }
 159
 160 int security_real_capable(struct task_struct *tsk, int cap)
 161 {
 162         const struct cred *cred;
 163         int ret;
 164
 165         cred = get_task_cred(tsk);
 166         ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_AUDIT);
 167         put_cred(cred);
 168         return ret;
 169 }
 170
 171 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
 172 {
 173         const struct cred *cred;
 174         int ret;
 175
 176         cred = get_task_cred(tsk);
 177         ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_NOAUDIT);
 178         put_cred(cred);
 179         return ret;
 180 }
 181
 182 int security_acct(struct file *file)
 183 {
 184         return security_ops->acct(file);
 185 }
 186
 187 int security_sysctl(struct ctl_table *table, int op)
 188 {
 189         return security_ops->sysctl(table, op);
 190 }
 191
 192 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 193 {
 194         return security_ops->quotactl(cmds, type, id, sb);
 195 }
 196
 197 int security_quota_on(struct dentry *dentry)
 198 {
 199         return security_ops->quota_on(dentry);
 200 }
 201
 202 int security_syslog(int type)
 203 {
 204         return security_ops->syslog(type);
 205 }
 206
 207 int security_settime(struct timespec *ts, struct timezone *tz)
 208 {
 209         return security_ops->settime(ts, tz);
 210 }
 211
 212 int security_vm_enough_memory(long pages)
 213 {
 214         WARN_ON(current->mm == NULL);
 215         return security_ops->vm_enough_memory(current->mm, pages);
 216 }
 217
 218 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 219 {
 220         WARN_ON(mm == NULL);
 221         return security_ops->vm_enough_memory(mm, pages);
 222 }
 223
 224 int security_vm_enough_memory_kern(long pages)
 225 {
 226         /* If current->mm is a kernel thread then we will pass NULL,
 227            for this specific case that is fine */
 228         return security_ops->vm_enough_memory(current->mm, pages);
 229 }
 230
 231 int security_bprm_set_creds(struct linux_binprm *bprm)
 232 {
 233         return security_ops->bprm_set_creds(bprm);
 234 }
 235
 236 int security_bprm_check(struct linux_binprm *bprm)
 237 {
 238         return security_ops->bprm_check_security(bprm);
 239 }
 240
 241 void security_bprm_committing_creds(struct linux_binprm *bprm)
 242 {
 243         security_ops->bprm_committing_creds(bprm);
 244 }
 245
 246 void security_bprm_committed_creds(struct linux_binprm *bprm)
 247 {
 248         security_ops->bprm_committed_creds(bprm);
 249 }
 250
 251 int security_bprm_secureexec(struct linux_binprm *bprm)
 252 {
 253         return security_ops->bprm_secureexec(bprm);
 254 }
 255
 256 int security_sb_alloc(struct super_block *sb)
 257 {
 258         return security_ops->sb_alloc_security(sb);
 259 }
 260
 261 void security_sb_free(struct super_block *sb)
 262 {
 263         security_ops->sb_free_security(sb);
 264 }
 265
 266 int security_sb_copy_data(char *orig, char *copy)
 267 {
 268         return security_ops->sb_copy_data(orig, copy);
 269 }
 270 EXPORT_SYMBOL(security_sb_copy_data);
 271
 272 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 273 {
 274         return security_ops->sb_kern_mount(sb, flags, data);
 275 }
 276
 277 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 278 {
 279         return security_ops->sb_show_options(m, sb);
 280 }
 281
 282 int security_sb_statfs(struct dentry *dentry)
 283 {
 284         return security_ops->sb_statfs(dentry);
 285 }
 286
 287 int security_sb_mount(char *dev_name, struct path *path,
 288                        char *type, unsigned long flags, void *data)
 289 {
 290         return security_ops->sb_mount(dev_name, path, type, flags, data);
 291 }
 292
 293 int security_sb_check_sb(struct vfsmount *mnt, struct path *path)
 294 {
 295         return security_ops->sb_check_sb(mnt, path);
 296 }
 297
 298 int security_sb_umount(struct vfsmount *mnt, int flags)
 299 {
 300         return security_ops->sb_umount(mnt, flags);
 301 }
 302
 303 void security_sb_umount_close(struct vfsmount *mnt)
 304 {
 305         security_ops->sb_umount_close(mnt);
 306 }
 307
 308 void security_sb_umount_busy(struct vfsmount *mnt)
 309 {
 310         security_ops->sb_umount_busy(mnt);
 311 }
 312
 313 void security_sb_post_remount(struct vfsmount *mnt, unsigned long flags, void *data)
 314 {
 315         security_ops->sb_post_remount(mnt, flags, data);
 316 }
 317
 318 void security_sb_post_addmount(struct vfsmount *mnt, struct path *mountpoint)
 319 {
 320         security_ops->sb_post_addmount(mnt, mountpoint);
 321 }
 322
 323 int security_sb_pivotroot(struct path *old_path, struct path *new_path)
 324 {
 325         return security_ops->sb_pivotroot(old_path, new_path);
 326 }
 327
 328 void security_sb_post_pivotroot(struct path *old_path, struct path *new_path)
 329 {
 330         security_ops->sb_post_pivotroot(old_path, new_path);
 331 }
 332
 333 int security_sb_set_mnt_opts(struct super_block *sb,
 334                                 struct security_mnt_opts *opts)
 335 {
 336         return security_ops->sb_set_mnt_opts(sb, opts);
 337 }
 338 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 339
 340 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
 341                                 struct super_block *newsb)
 342 {
 343         security_ops->sb_clone_mnt_opts(oldsb, newsb);
 344 }
 345 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 346
 347 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 348 {
 349         return security_ops->sb_parse_opts_str(options, opts);
 350 }
 351 EXPORT_SYMBOL(security_sb_parse_opts_str);
 352
 353 int security_inode_alloc(struct inode *inode)
 354 {
 355         inode->i_security = NULL;
 356         return security_ops->inode_alloc_security(inode);
 357 }
 358
 359 void security_inode_free(struct inode *inode)
 360 {
 361         security_ops->inode_free_security(inode);
 362 }
 363
 364 int security_inode_init_security(struct inode *inode, struct inode *dir,
 365                                   char **name, void **value, size_t *len)
 366 {
 367         if (unlikely(IS_PRIVATE(inode)))
 368                 return -EOPNOTSUPP;
 369         return security_ops->inode_init_security(inode, dir, name, value, len);
 370 }
 371 EXPORT_SYMBOL(security_inode_init_security);
 372
 373 #ifdef CONFIG_SECURITY_PATH
 374 int security_path_mknod(struct path *path, struct dentry *dentry, int mode,
 375                         unsigned int dev)
 376 {
 377         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 378                 return 0;
 379         return security_ops->path_mknod(path, dentry, mode, dev);
 380 }
 381 EXPORT_SYMBOL(security_path_mknod);
 382
 383 int security_path_mkdir(struct path *path, struct dentry *dentry, int mode)
 384 {
 385         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 386                 return 0;
 387         return security_ops->path_mkdir(path, dentry, mode);
 388 }
 389
 390 int security_path_rmdir(struct path *path, struct dentry *dentry)
 391 {
 392         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 393                 return 0;
 394         return security_ops->path_rmdir(path, dentry);
 395 }
 396
 397 int security_path_unlink(struct path *path, struct dentry *dentry)
 398 {
 399         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 400                 return 0;
 401         return security_ops->path_unlink(path, dentry);
 402 }
 403
 404 int security_path_symlink(struct path *path, struct dentry *dentry,
 405                           const char *old_name)
 406 {
 407         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 408                 return 0;
 409         return security_ops->path_symlink(path, dentry, old_name);
 410 }
 411
 412 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
 413                        struct dentry *new_dentry)
 414 {
 415         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 416                 return 0;
 417         return security_ops->path_link(old_dentry, new_dir, new_dentry);
 418 }
 419
 420 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
 421                          struct path *new_dir, struct dentry *new_dentry)
 422 {
 423         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 424                      (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 425                 return 0;
 426         return security_ops->path_rename(old_dir, old_dentry, new_dir,
 427                                          new_dentry);
 428 }
 429
 430 int security_path_truncate(struct path *path, loff_t length,
 431                            unsigned int time_attrs)
 432 {
 433         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 434                 return 0;
 435         return security_ops->path_truncate(path, length, time_attrs);
 436 }
 437 #endif
 438
 439 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
 440 {
 441         if (unlikely(IS_PRIVATE(dir)))
 442                 return 0;
 443         return security_ops->inode_create(dir, dentry, mode);
 444 }
 445 EXPORT_SYMBOL_GPL(security_inode_create);
 446
 447 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 448                          struct dentry *new_dentry)
 449 {
 450         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 451                 return 0;
 452         return security_ops->inode_link(old_dentry, dir, new_dentry);
 453 }
 454
 455 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 456 {
 457         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 458                 return 0;
 459         return security_ops->inode_unlink(dir, dentry);
 460 }
 461
 462 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 463                             const char *old_name)
 464 {
 465         if (unlikely(IS_PRIVATE(dir)))
 466                 return 0;
 467         return security_ops->inode_symlink(dir, dentry, old_name);
 468 }
 469
 470 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 471 {
 472         if (unlikely(IS_PRIVATE(dir)))
 473                 return 0;
 474         return security_ops->inode_mkdir(dir, dentry, mode);
 475 }
 476 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 477
 478 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 479 {
 480         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 481                 return 0;
 482         return security_ops->inode_rmdir(dir, dentry);
 483 }
 484
 485 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 486 {
 487         if (unlikely(IS_PRIVATE(dir)))
 488                 return 0;
 489         return security_ops->inode_mknod(dir, dentry, mode, dev);
 490 }
 491
 492 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 493                            struct inode *new_dir, struct dentry *new_dentry)
 494 {
 495         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 496             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 497                 return 0;
 498         return security_ops->inode_rename(old_dir, old_dentry,
 499                                            new_dir, new_dentry);
 500 }
 501
 502 int security_inode_readlink(struct dentry *dentry)
 503 {
 504         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 505                 return 0;
 506         return security_ops->inode_readlink(dentry);
 507 }
 508
 509 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 510 {
 511         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 512                 return 0;
 513         return security_ops->inode_follow_link(dentry, nd);
 514 }
 515
 516 int security_inode_permission(struct inode *inode, int mask)
 517 {
 518         if (unlikely(IS_PRIVATE(inode)))
 519                 return 0;
 520         return security_ops->inode_permission(inode, mask);
 521 }
 522
 523 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 524 {
 525         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 526                 return 0;
 527         return security_ops->inode_setattr(dentry, attr);
 528 }
 529 EXPORT_SYMBOL_GPL(security_inode_setattr);
 530
 531 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 532 {
 533         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 534                 return 0;
 535         return security_ops->inode_getattr(mnt, dentry);
 536 }
 537
 538 void security_inode_delete(struct inode *inode)
 539 {
 540         if (unlikely(IS_PRIVATE(inode)))
 541                 return;
 542         security_ops->inode_delete(inode);
 543 }
 544
 545 int security_inode_setxattr(struct dentry *dentry, const char *name,
 546                             const void *value, size_t size, int flags)
 547 {
 548         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 549                 return 0;
 550         return security_ops->inode_setxattr(dentry, name, value, size, flags);
 551 }
 552
 553 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 554                                   const void *value, size_t size, int flags)
 555 {
 556         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 557                 return;
 558         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 559 }
 560
 561 int security_inode_getxattr(struct dentry *dentry, const char *name)
 562 {
 563         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 564                 return 0;
 565         return security_ops->inode_getxattr(dentry, name);
 566 }
 567
 568 int security_inode_listxattr(struct dentry *dentry)
 569 {
 570         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 571                 return 0;
 572         return security_ops->inode_listxattr(dentry);
 573 }
 574
 575 int security_inode_removexattr(struct dentry *dentry, const char *name)
 576 {
 577         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 578                 return 0;
 579         return security_ops->inode_removexattr(dentry, name);
 580 }
 581
 582 int security_inode_need_killpriv(struct dentry *dentry)
 583 {
 584         return security_ops->inode_need_killpriv(dentry);
 585 }
 586
 587 int security_inode_killpriv(struct dentry *dentry)
 588 {
 589         return security_ops->inode_killpriv(dentry);
 590 }
 591
 592 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 593 {
 594         if (unlikely(IS_PRIVATE(inode)))
 595                 return 0;
 596         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 597 }
 598
 599 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 600 {
 601         if (unlikely(IS_PRIVATE(inode)))
 602                 return 0;
 603         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 604 }
 605
 606 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 607 {
 608         if (unlikely(IS_PRIVATE(inode)))
 609                 return 0;
 610         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 611 }
 612
 613 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 614 {
 615         security_ops->inode_getsecid(inode, secid);
 616 }
 617
 618 int security_file_permission(struct file *file, int mask)
 619 {
 620         return security_ops->file_permission(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         return security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 643 }
 644
 645 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 646                             unsigned long prot)
 647 {
 648         return security_ops->file_mprotect(vma, reqprot, prot);
 649 }
 650
 651 int security_file_lock(struct file *file, unsigned int cmd)
 652 {
 653         return security_ops->file_lock(file, cmd);
 654 }
 655
 656 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 657 {
 658         return security_ops->file_fcntl(file, cmd, arg);
 659 }
 660
 661 int security_file_set_fowner(struct file *file)
 662 {
 663         return security_ops->file_set_fowner(file);
 664 }
 665
 666 int security_file_send_sigiotask(struct task_struct *tsk,
 667                                   struct fown_struct *fown, int sig)
 668 {
 669         return security_ops->file_send_sigiotask(tsk, fown, sig);
 670 }
 671
 672 int security_file_receive(struct file *file)
 673 {
 674         return security_ops->file_receive(file);
 675 }
 676
 677 int security_dentry_open(struct file *file, const struct cred *cred)
 678 {
 679         return security_ops->dentry_open(file, cred);
 680 }
 681
 682 int security_task_create(unsigned long clone_flags)
 683 {
 684         return security_ops->task_create(clone_flags);
 685 }
 686
 687 void security_cred_free(struct cred *cred)
 688 {
 689         security_ops->cred_free(cred);
 690 }
 691
 692 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 693 {
 694         return security_ops->cred_prepare(new, old, gfp);
 695 }
 696
 697 void security_commit_creds(struct cred *new, const struct cred *old)
 698 {
 699         security_ops->cred_commit(new, old);
 700 }
 701
 702 int security_kernel_act_as(struct cred *new, u32 secid)
 703 {
 704         return security_ops->kernel_act_as(new, secid);
 705 }
 706
 707 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 708 {
 709         return security_ops->kernel_create_files_as(new, inode);
 710 }
 711
 712 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
 713 {
 714         return security_ops->task_setuid(id0, id1, id2, flags);
 715 }
 716
 717 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 718                              int flags)
 719 {
 720         return security_ops->task_fix_setuid(new, old, flags);
 721 }
 722
 723 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags)
 724 {
 725         return security_ops->task_setgid(id0, id1, id2, flags);
 726 }
 727
 728 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 729 {
 730         return security_ops->task_setpgid(p, pgid);
 731 }
 732
 733 int security_task_getpgid(struct task_struct *p)
 734 {
 735         return security_ops->task_getpgid(p);
 736 }
 737
 738 int security_task_getsid(struct task_struct *p)
 739 {
 740         return security_ops->task_getsid(p);
 741 }
 742
 743 void security_task_getsecid(struct task_struct *p, u32 *secid)
 744 {
 745         security_ops->task_getsecid(p, secid);
 746 }
 747 EXPORT_SYMBOL(security_task_getsecid);
 748
 749 int security_task_setgroups(struct group_info *group_info)
 750 {
 751         return security_ops->task_setgroups(group_info);
 752 }
 753
 754 int security_task_setnice(struct task_struct *p, int nice)
 755 {
 756         return security_ops->task_setnice(p, nice);
 757 }
 758
 759 int security_task_setioprio(struct task_struct *p, int ioprio)
 760 {
 761         return security_ops->task_setioprio(p, ioprio);
 762 }
 763
 764 int security_task_getioprio(struct task_struct *p)
 765 {
 766         return security_ops->task_getioprio(p);
 767 }
 768
 769 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim)
 770 {
 771         return security_ops->task_setrlimit(resource, new_rlim);
 772 }
 773
 774 int security_task_setscheduler(struct task_struct *p,
 775                                 int policy, struct sched_param *lp)
 776 {
 777         return security_ops->task_setscheduler(p, policy, lp);
 778 }
 779
 780 int security_task_getscheduler(struct task_struct *p)
 781 {
 782         return security_ops->task_getscheduler(p);
 783 }
 784
 785 int security_task_movememory(struct task_struct *p)
 786 {
 787         return security_ops->task_movememory(p);
 788 }
 789
 790 int security_task_kill(struct task_struct *p, struct siginfo *info,
 791                         int sig, u32 secid)
 792 {
 793         return security_ops->task_kill(p, info, sig, secid);
 794 }
 795
 796 int security_task_wait(struct task_struct *p)
 797 {
 798         return security_ops->task_wait(p);
 799 }
 800
 801 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 802                          unsigned long arg4, unsigned long arg5)
 803 {
 804         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 805 }
 806
 807 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 808 {
 809         security_ops->task_to_inode(p, inode);
 810 }
 811
 812 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 813 {
 814         return security_ops->ipc_permission(ipcp, flag);
 815 }
 816
 817 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 818 {
 819         security_ops->ipc_getsecid(ipcp, secid);
 820 }
 821
 822 int security_msg_msg_alloc(struct msg_msg *msg)
 823 {
 824         return security_ops->msg_msg_alloc_security(msg);
 825 }
 826
 827 void security_msg_msg_free(struct msg_msg *msg)
 828 {
 829         security_ops->msg_msg_free_security(msg);
 830 }
 831
 832 int security_msg_queue_alloc(struct msg_queue *msq)
 833 {
 834         return security_ops->msg_queue_alloc_security(msq);
 835 }
 836
 837 void security_msg_queue_free(struct msg_queue *msq)
 838 {
 839         security_ops->msg_queue_free_security(msq);
 840 }
 841
 842 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 843 {
 844         return security_ops->msg_queue_associate(msq, msqflg);
 845 }
 846
 847 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 848 {
 849         return security_ops->msg_queue_msgctl(msq, cmd);
 850 }
 851
 852 int security_msg_queue_msgsnd(struct msg_queue *msq,
 853                                struct msg_msg *msg, int msqflg)
 854 {
 855         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 856 }
 857
 858 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 859                                struct task_struct *target, long type, int mode)
 860 {
 861         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 862 }
 863
 864 int security_shm_alloc(struct shmid_kernel *shp)
 865 {
 866         return security_ops->shm_alloc_security(shp);
 867 }
 868
 869 void security_shm_free(struct shmid_kernel *shp)
 870 {
 871         security_ops->shm_free_security(shp);
 872 }
 873
 874 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 875 {
 876         return security_ops->shm_associate(shp, shmflg);
 877 }
 878
 879 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 880 {
 881         return security_ops->shm_shmctl(shp, cmd);
 882 }
 883
 884 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 885 {
 886         return security_ops->shm_shmat(shp, shmaddr, shmflg);
 887 }
 888
 889 int security_sem_alloc(struct sem_array *sma)
 890 {
 891         return security_ops->sem_alloc_security(sma);
 892 }
 893
 894 void security_sem_free(struct sem_array *sma)
 895 {
 896         security_ops->sem_free_security(sma);
 897 }
 898
 899 int security_sem_associate(struct sem_array *sma, int semflg)
 900 {
 901         return security_ops->sem_associate(sma, semflg);
 902 }
 903
 904 int security_sem_semctl(struct sem_array *sma, int cmd)
 905 {
 906         return security_ops->sem_semctl(sma, cmd);
 907 }
 908
 909 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 910                         unsigned nsops, int alter)
 911 {
 912         return security_ops->sem_semop(sma, sops, nsops, alter);
 913 }
 914
 915 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 916 {
 917         if (unlikely(inode && IS_PRIVATE(inode)))
 918                 return;
 919         security_ops->d_instantiate(dentry, inode);
 920 }
 921 EXPORT_SYMBOL(security_d_instantiate);
 922
 923 int security_getprocattr(struct task_struct *p, char *name, char **value)
 924 {
 925         return security_ops->getprocattr(p, name, value);
 926 }
 927
 928 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 929 {
 930         return security_ops->setprocattr(p, name, value, size);
 931 }
 932
 933 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
 934 {
 935         return security_ops->netlink_send(sk, skb);
 936 }
 937
 938 int security_netlink_recv(struct sk_buff *skb, int cap)
 939 {
 940         return security_ops->netlink_recv(skb, cap);
 941 }
 942 EXPORT_SYMBOL(security_netlink_recv);
 943
 944 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
 945 {
 946         return security_ops->secid_to_secctx(secid, secdata, seclen);
 947 }
 948 EXPORT_SYMBOL(security_secid_to_secctx);
 949
 950 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 951 {
 952         return security_ops->secctx_to_secid(secdata, seclen, secid);
 953 }
 954 EXPORT_SYMBOL(security_secctx_to_secid);
 955
 956 void security_release_secctx(char *secdata, u32 seclen)
 957 {
 958         security_ops->release_secctx(secdata, seclen);
 959 }
 960 EXPORT_SYMBOL(security_release_secctx);
 961
 962 #ifdef CONFIG_SECURITY_NETWORK
 963
 964 int security_unix_stream_connect(struct socket *sock, struct socket *other,
 965                                  struct sock *newsk)
 966 {
 967         return security_ops->unix_stream_connect(sock, other, newsk);
 968 }
 969 EXPORT_SYMBOL(security_unix_stream_connect);
 970
 971 int security_unix_may_send(struct socket *sock,  struct socket *other)
 972 {
 973         return security_ops->unix_may_send(sock, other);
 974 }
 975 EXPORT_SYMBOL(security_unix_may_send);
 976
 977 int security_socket_create(int family, int type, int protocol, int kern)
 978 {
 979         return security_ops->socket_create(family, type, protocol, kern);
 980 }
 981
 982 int security_socket_post_create(struct socket *sock, int family,
 983                                 int type, int protocol, int kern)
 984 {
 985         return security_ops->socket_post_create(sock, family, type,
 986                                                 protocol, kern);
 987 }
 988
 989 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
 990 {
 991         return security_ops->socket_bind(sock, address, addrlen);
 992 }
 993
 994 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
 995 {
 996         return security_ops->socket_connect(sock, address, addrlen);
 997 }
 998
 999 int security_socket_listen(struct socket *sock, int backlog)
1000 {
1001         return security_ops->socket_listen(sock, backlog);
1002 }
1003
1004 int security_socket_accept(struct socket *sock, struct socket *newsock)
1005 {
1006         return security_ops->socket_accept(sock, newsock);
1007 }
1008
1009 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1010 {
1011         return security_ops->socket_sendmsg(sock, msg, size);
1012 }
1013
1014 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1015                             int size, int flags)
1016 {
1017         return security_ops->socket_recvmsg(sock, msg, size, flags);
1018 }
1019
1020 int security_socket_getsockname(struct socket *sock)
1021 {
1022         return security_ops->socket_getsockname(sock);
1023 }
1024
1025 int security_socket_getpeername(struct socket *sock)
1026 {
1027         return security_ops->socket_getpeername(sock);
1028 }
1029
1030 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1031 {
1032         return security_ops->socket_getsockopt(sock, level, optname);
1033 }
1034
1035 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1036 {
1037         return security_ops->socket_setsockopt(sock, level, optname);
1038 }
1039
1040 int security_socket_shutdown(struct socket *sock, int how)
1041 {
1042         return security_ops->socket_shutdown(sock, how);
1043 }
1044
1045 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1046 {
1047         return security_ops->socket_sock_rcv_skb(sk, skb);
1048 }
1049 EXPORT_SYMBOL(security_sock_rcv_skb);
1050
1051 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1052                                       int __user *optlen, unsigned len)
1053 {
1054         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1055 }
1056
1057 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1058 {
1059         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1060 }
1061 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1062
1063 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1064 {
1065         return security_ops->sk_alloc_security(sk, family, priority);
1066 }
1067
1068 void security_sk_free(struct sock *sk)
1069 {
1070         security_ops->sk_free_security(sk);
1071 }
1072
1073 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1074 {
1075         security_ops->sk_clone_security(sk, newsk);
1076 }
1077
1078 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1079 {
1080         security_ops->sk_getsecid(sk, &fl->secid);
1081 }
1082 EXPORT_SYMBOL(security_sk_classify_flow);
1083
1084 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1085 {
1086         security_ops->req_classify_flow(req, fl);
1087 }
1088 EXPORT_SYMBOL(security_req_classify_flow);
1089
1090 void security_sock_graft(struct sock *sk, struct socket *parent)
1091 {
1092         security_ops->sock_graft(sk, parent);
1093 }
1094 EXPORT_SYMBOL(security_sock_graft);
1095
1096 int security_inet_conn_request(struct sock *sk,
1097                         struct sk_buff *skb, struct request_sock *req)
1098 {
1099         return security_ops->inet_conn_request(sk, skb, req);
1100 }
1101 EXPORT_SYMBOL(security_inet_conn_request);
1102
1103 void security_inet_csk_clone(struct sock *newsk,
1104                         const struct request_sock *req)
1105 {
1106         security_ops->inet_csk_clone(newsk, req);
1107 }
1108
1109 void security_inet_conn_established(struct sock *sk,
1110                         struct sk_buff *skb)
1111 {
1112         security_ops->inet_conn_established(sk, skb);
1113 }
1114
1115 #endif  /* CONFIG_SECURITY_NETWORK */
1116
1117 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1118
1119 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1120 {
1121         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1122 }
1123 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1124
1125 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1126                               struct xfrm_sec_ctx **new_ctxp)
1127 {
1128         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1129 }
1130
1131 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1132 {
1133         security_ops->xfrm_policy_free_security(ctx);
1134 }
1135 EXPORT_SYMBOL(security_xfrm_policy_free);
1136
1137 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1138 {
1139         return security_ops->xfrm_policy_delete_security(ctx);
1140 }
1141
1142 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1143 {
1144         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1145 }
1146 EXPORT_SYMBOL(security_xfrm_state_alloc);
1147
1148 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1149                                       struct xfrm_sec_ctx *polsec, u32 secid)
1150 {
1151         if (!polsec)
1152                 return 0;
1153         /*
1154          * We want the context to be taken from secid which is usually
1155          * from the sock.
1156          */
1157         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1158 }
1159
1160 int security_xfrm_state_delete(struct xfrm_state *x)
1161 {
1162         return security_ops->xfrm_state_delete_security(x);
1163 }
1164 EXPORT_SYMBOL(security_xfrm_state_delete);
1165
1166 void security_xfrm_state_free(struct xfrm_state *x)
1167 {
1168         security_ops->xfrm_state_free_security(x);
1169 }
1170
1171 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1172 {
1173         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1174 }
1175
1176 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1177                                        struct xfrm_policy *xp, struct flowi *fl)
1178 {
1179         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1180 }
1181
1182 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1183 {
1184         return security_ops->xfrm_decode_session(skb, secid, 1);
1185 }
1186
1187 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1188 {
1189         int rc = security_ops->xfrm_decode_session(skb, &fl->secid, 0);
1190
1191         BUG_ON(rc);
1192 }
1193 EXPORT_SYMBOL(security_skb_classify_flow);
1194
1195 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1196
1197 #ifdef CONFIG_KEYS
1198
1199 int security_key_alloc(struct key *key, const struct cred *cred,
1200                        unsigned long flags)
1201 {
1202         return security_ops->key_alloc(key, cred, flags);
1203 }
1204
1205 void security_key_free(struct key *key)
1206 {
1207         security_ops->key_free(key);
1208 }
1209
1210 int security_key_permission(key_ref_t key_ref,
1211                             const struct cred *cred, key_perm_t perm)
1212 {
1213         return security_ops->key_permission(key_ref, cred, perm);
1214 }
1215
1216 int security_key_getsecurity(struct key *key, char **_buffer)
1217 {
1218         return security_ops->key_getsecurity(key, _buffer);
1219 }
1220
1221 #endif  /* CONFIG_KEYS */
1222
1223 #ifdef CONFIG_AUDIT
1224
1225 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1226 {
1227         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1228 }
1229
1230 int security_audit_rule_known(struct audit_krule *krule)
1231 {
1232         return security_ops->audit_rule_known(krule);
1233 }
1234
1235 void security_audit_rule_free(void *lsmrule)
1236 {
1237         security_ops->audit_rule_free(lsmrule);
1238 }
1239
1240 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1241                               struct audit_context *actx)
1242 {
1243         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1244 }
1245
1246 #endif /* CONFIG_AUDIT */