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_access_check(struct task_struct *child, unsigned int mode)
 128 {
 129         return security_ops->ptrace_access_check(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
 438 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
 439                         mode_t mode)
 440 {
 441         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 442                 return 0;
 443         return security_ops->path_chmod(dentry, mnt, mode);
 444 }
 445
 446 int security_path_chown(struct path *path, uid_t uid, gid_t gid)
 447 {
 448         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 449                 return 0;
 450         return security_ops->path_chown(path, uid, gid);
 451 }
 452
 453 int security_path_chroot(struct path *path)
 454 {
 455         return security_ops->path_chroot(path);
 456 }
 457 #endif
 458
 459 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
 460 {
 461         if (unlikely(IS_PRIVATE(dir)))
 462                 return 0;
 463         return security_ops->inode_create(dir, dentry, mode);
 464 }
 465 EXPORT_SYMBOL_GPL(security_inode_create);
 466
 467 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 468                          struct dentry *new_dentry)
 469 {
 470         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 471                 return 0;
 472         return security_ops->inode_link(old_dentry, dir, new_dentry);
 473 }
 474
 475 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 476 {
 477         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 478                 return 0;
 479         return security_ops->inode_unlink(dir, dentry);
 480 }
 481
 482 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 483                             const char *old_name)
 484 {
 485         if (unlikely(IS_PRIVATE(dir)))
 486                 return 0;
 487         return security_ops->inode_symlink(dir, dentry, old_name);
 488 }
 489
 490 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 491 {
 492         if (unlikely(IS_PRIVATE(dir)))
 493                 return 0;
 494         return security_ops->inode_mkdir(dir, dentry, mode);
 495 }
 496 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 497
 498 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 499 {
 500         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 501                 return 0;
 502         return security_ops->inode_rmdir(dir, dentry);
 503 }
 504
 505 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 506 {
 507         if (unlikely(IS_PRIVATE(dir)))
 508                 return 0;
 509         return security_ops->inode_mknod(dir, dentry, mode, dev);
 510 }
 511
 512 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 513                            struct inode *new_dir, struct dentry *new_dentry)
 514 {
 515         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 516             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 517                 return 0;
 518         return security_ops->inode_rename(old_dir, old_dentry,
 519                                            new_dir, new_dentry);
 520 }
 521
 522 int security_inode_readlink(struct dentry *dentry)
 523 {
 524         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 525                 return 0;
 526         return security_ops->inode_readlink(dentry);
 527 }
 528
 529 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 530 {
 531         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 532                 return 0;
 533         return security_ops->inode_follow_link(dentry, nd);
 534 }
 535
 536 int security_inode_permission(struct inode *inode, int mask)
 537 {
 538         if (unlikely(IS_PRIVATE(inode)))
 539                 return 0;
 540         return security_ops->inode_permission(inode, mask);
 541 }
 542
 543 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 544 {
 545         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 546                 return 0;
 547         return security_ops->inode_setattr(dentry, attr);
 548 }
 549 EXPORT_SYMBOL_GPL(security_inode_setattr);
 550
 551 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 552 {
 553         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 554                 return 0;
 555         return security_ops->inode_getattr(mnt, dentry);
 556 }
 557
 558 void security_inode_delete(struct inode *inode)
 559 {
 560         if (unlikely(IS_PRIVATE(inode)))
 561                 return;
 562         security_ops->inode_delete(inode);
 563 }
 564
 565 int security_inode_setxattr(struct dentry *dentry, const char *name,
 566                             const void *value, size_t size, int flags)
 567 {
 568         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 569                 return 0;
 570         return security_ops->inode_setxattr(dentry, name, value, size, flags);
 571 }
 572
 573 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 574                                   const void *value, size_t size, int flags)
 575 {
 576         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 577                 return;
 578         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 579 }
 580
 581 int security_inode_getxattr(struct dentry *dentry, const char *name)
 582 {
 583         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 584                 return 0;
 585         return security_ops->inode_getxattr(dentry, name);
 586 }
 587
 588 int security_inode_listxattr(struct dentry *dentry)
 589 {
 590         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 591                 return 0;
 592         return security_ops->inode_listxattr(dentry);
 593 }
 594
 595 int security_inode_removexattr(struct dentry *dentry, const char *name)
 596 {
 597         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 598                 return 0;
 599         return security_ops->inode_removexattr(dentry, name);
 600 }
 601
 602 int security_inode_need_killpriv(struct dentry *dentry)
 603 {
 604         return security_ops->inode_need_killpriv(dentry);
 605 }
 606
 607 int security_inode_killpriv(struct dentry *dentry)
 608 {
 609         return security_ops->inode_killpriv(dentry);
 610 }
 611
 612 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 613 {
 614         if (unlikely(IS_PRIVATE(inode)))
 615                 return 0;
 616         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 617 }
 618
 619 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 620 {
 621         if (unlikely(IS_PRIVATE(inode)))
 622                 return 0;
 623         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 624 }
 625
 626 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 627 {
 628         if (unlikely(IS_PRIVATE(inode)))
 629                 return 0;
 630         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 631 }
 632
 633 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 634 {
 635         security_ops->inode_getsecid(inode, secid);
 636 }
 637
 638 int security_file_permission(struct file *file, int mask)
 639 {
 640         return security_ops->file_permission(file, mask);
 641 }
 642
 643 int security_file_alloc(struct file *file)
 644 {
 645         return security_ops->file_alloc_security(file);
 646 }
 647
 648 void security_file_free(struct file *file)
 649 {
 650         security_ops->file_free_security(file);
 651 }
 652
 653 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 654 {
 655         return security_ops->file_ioctl(file, cmd, arg);
 656 }
 657
 658 int security_file_mmap(struct file *file, unsigned long reqprot,
 659                         unsigned long prot, unsigned long flags,
 660                         unsigned long addr, unsigned long addr_only)
 661 {
 662         return security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 663 }
 664
 665 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 666                             unsigned long prot)
 667 {
 668         return security_ops->file_mprotect(vma, reqprot, prot);
 669 }
 670
 671 int security_file_lock(struct file *file, unsigned int cmd)
 672 {
 673         return security_ops->file_lock(file, cmd);
 674 }
 675
 676 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 677 {
 678         return security_ops->file_fcntl(file, cmd, arg);
 679 }
 680
 681 int security_file_set_fowner(struct file *file)
 682 {
 683         return security_ops->file_set_fowner(file);
 684 }
 685
 686 int security_file_send_sigiotask(struct task_struct *tsk,
 687                                   struct fown_struct *fown, int sig)
 688 {
 689         return security_ops->file_send_sigiotask(tsk, fown, sig);
 690 }
 691
 692 int security_file_receive(struct file *file)
 693 {
 694         return security_ops->file_receive(file);
 695 }
 696
 697 int security_dentry_open(struct file *file, const struct cred *cred)
 698 {
 699         return security_ops->dentry_open(file, cred);
 700 }
 701
 702 int security_task_create(unsigned long clone_flags)
 703 {
 704         return security_ops->task_create(clone_flags);
 705 }
 706
 707 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 708 {
 709         return security_ops->cred_alloc_blank(cred, gfp);
 710 }
 711
 712 void security_cred_free(struct cred *cred)
 713 {
 714         security_ops->cred_free(cred);
 715 }
 716
 717 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 718 {
 719         return security_ops->cred_prepare(new, old, gfp);
 720 }
 721
 722 void security_commit_creds(struct cred *new, const struct cred *old)
 723 {
 724         security_ops->cred_commit(new, old);
 725 }
 726
 727 void security_transfer_creds(struct cred *new, const struct cred *old)
 728 {
 729         security_ops->cred_transfer(new, old);
 730 }
 731
 732 int security_kernel_act_as(struct cred *new, u32 secid)
 733 {
 734         return security_ops->kernel_act_as(new, secid);
 735 }
 736
 737 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 738 {
 739         return security_ops->kernel_create_files_as(new, inode);
 740 }
 741
 742 int security_kernel_module_request(void)
 743 {
 744         return security_ops->kernel_module_request();
 745 }
 746
 747 int security_task_setuid(uid_t id0, uid_t id1, uid_t id2, int flags)
 748 {
 749         return security_ops->task_setuid(id0, id1, id2, flags);
 750 }
 751
 752 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 753                              int flags)
 754 {
 755         return security_ops->task_fix_setuid(new, old, flags);
 756 }
 757
 758 int security_task_setgid(gid_t id0, gid_t id1, gid_t id2, int flags)
 759 {
 760         return security_ops->task_setgid(id0, id1, id2, flags);
 761 }
 762
 763 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 764 {
 765         return security_ops->task_setpgid(p, pgid);
 766 }
 767
 768 int security_task_getpgid(struct task_struct *p)
 769 {
 770         return security_ops->task_getpgid(p);
 771 }
 772
 773 int security_task_getsid(struct task_struct *p)
 774 {
 775         return security_ops->task_getsid(p);
 776 }
 777
 778 void security_task_getsecid(struct task_struct *p, u32 *secid)
 779 {
 780         security_ops->task_getsecid(p, secid);
 781 }
 782 EXPORT_SYMBOL(security_task_getsecid);
 783
 784 int security_task_setgroups(struct group_info *group_info)
 785 {
 786         return security_ops->task_setgroups(group_info);
 787 }
 788
 789 int security_task_setnice(struct task_struct *p, int nice)
 790 {
 791         return security_ops->task_setnice(p, nice);
 792 }
 793
 794 int security_task_setioprio(struct task_struct *p, int ioprio)
 795 {
 796         return security_ops->task_setioprio(p, ioprio);
 797 }
 798
 799 int security_task_getioprio(struct task_struct *p)
 800 {
 801         return security_ops->task_getioprio(p);
 802 }
 803
 804 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim)
 805 {
 806         return security_ops->task_setrlimit(resource, new_rlim);
 807 }
 808
 809 int security_task_setscheduler(struct task_struct *p,
 810                                 int policy, struct sched_param *lp)
 811 {
 812         return security_ops->task_setscheduler(p, policy, lp);
 813 }
 814
 815 int security_task_getscheduler(struct task_struct *p)
 816 {
 817         return security_ops->task_getscheduler(p);
 818 }
 819
 820 int security_task_movememory(struct task_struct *p)
 821 {
 822         return security_ops->task_movememory(p);
 823 }
 824
 825 int security_task_kill(struct task_struct *p, struct siginfo *info,
 826                         int sig, u32 secid)
 827 {
 828         return security_ops->task_kill(p, info, sig, secid);
 829 }
 830
 831 int security_task_wait(struct task_struct *p)
 832 {
 833         return security_ops->task_wait(p);
 834 }
 835
 836 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 837                          unsigned long arg4, unsigned long arg5)
 838 {
 839         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 840 }
 841
 842 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 843 {
 844         security_ops->task_to_inode(p, inode);
 845 }
 846
 847 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 848 {
 849         return security_ops->ipc_permission(ipcp, flag);
 850 }
 851
 852 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 853 {
 854         security_ops->ipc_getsecid(ipcp, secid);
 855 }
 856
 857 int security_msg_msg_alloc(struct msg_msg *msg)
 858 {
 859         return security_ops->msg_msg_alloc_security(msg);
 860 }
 861
 862 void security_msg_msg_free(struct msg_msg *msg)
 863 {
 864         security_ops->msg_msg_free_security(msg);
 865 }
 866
 867 int security_msg_queue_alloc(struct msg_queue *msq)
 868 {
 869         return security_ops->msg_queue_alloc_security(msq);
 870 }
 871
 872 void security_msg_queue_free(struct msg_queue *msq)
 873 {
 874         security_ops->msg_queue_free_security(msq);
 875 }
 876
 877 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 878 {
 879         return security_ops->msg_queue_associate(msq, msqflg);
 880 }
 881
 882 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 883 {
 884         return security_ops->msg_queue_msgctl(msq, cmd);
 885 }
 886
 887 int security_msg_queue_msgsnd(struct msg_queue *msq,
 888                                struct msg_msg *msg, int msqflg)
 889 {
 890         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 891 }
 892
 893 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 894                                struct task_struct *target, long type, int mode)
 895 {
 896         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 897 }
 898
 899 int security_shm_alloc(struct shmid_kernel *shp)
 900 {
 901         return security_ops->shm_alloc_security(shp);
 902 }
 903
 904 void security_shm_free(struct shmid_kernel *shp)
 905 {
 906         security_ops->shm_free_security(shp);
 907 }
 908
 909 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 910 {
 911         return security_ops->shm_associate(shp, shmflg);
 912 }
 913
 914 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 915 {
 916         return security_ops->shm_shmctl(shp, cmd);
 917 }
 918
 919 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 920 {
 921         return security_ops->shm_shmat(shp, shmaddr, shmflg);
 922 }
 923
 924 int security_sem_alloc(struct sem_array *sma)
 925 {
 926         return security_ops->sem_alloc_security(sma);
 927 }
 928
 929 void security_sem_free(struct sem_array *sma)
 930 {
 931         security_ops->sem_free_security(sma);
 932 }
 933
 934 int security_sem_associate(struct sem_array *sma, int semflg)
 935 {
 936         return security_ops->sem_associate(sma, semflg);
 937 }
 938
 939 int security_sem_semctl(struct sem_array *sma, int cmd)
 940 {
 941         return security_ops->sem_semctl(sma, cmd);
 942 }
 943
 944 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 945                         unsigned nsops, int alter)
 946 {
 947         return security_ops->sem_semop(sma, sops, nsops, alter);
 948 }
 949
 950 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 951 {
 952         if (unlikely(inode && IS_PRIVATE(inode)))
 953                 return;
 954         security_ops->d_instantiate(dentry, inode);
 955 }
 956 EXPORT_SYMBOL(security_d_instantiate);
 957
 958 int security_getprocattr(struct task_struct *p, char *name, char **value)
 959 {
 960         return security_ops->getprocattr(p, name, value);
 961 }
 962
 963 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 964 {
 965         return security_ops->setprocattr(p, name, value, size);
 966 }
 967
 968 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
 969 {
 970         return security_ops->netlink_send(sk, skb);
 971 }
 972
 973 int security_netlink_recv(struct sk_buff *skb, int cap)
 974 {
 975         return security_ops->netlink_recv(skb, cap);
 976 }
 977 EXPORT_SYMBOL(security_netlink_recv);
 978
 979 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
 980 {
 981         return security_ops->secid_to_secctx(secid, secdata, seclen);
 982 }
 983 EXPORT_SYMBOL(security_secid_to_secctx);
 984
 985 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 986 {
 987         return security_ops->secctx_to_secid(secdata, seclen, secid);
 988 }
 989 EXPORT_SYMBOL(security_secctx_to_secid);
 990
 991 void security_release_secctx(char *secdata, u32 seclen)
 992 {
 993         security_ops->release_secctx(secdata, seclen);
 994 }
 995 EXPORT_SYMBOL(security_release_secctx);
 996
 997 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
 998 {
 999         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
1000 }
1001 EXPORT_SYMBOL(security_inode_notifysecctx);
1002
1003 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1004 {
1005         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1006 }
1007 EXPORT_SYMBOL(security_inode_setsecctx);
1008
1009 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1010 {
1011         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1012 }
1013 EXPORT_SYMBOL(security_inode_getsecctx);
1014
1015 #ifdef CONFIG_SECURITY_NETWORK
1016
1017 int security_unix_stream_connect(struct socket *sock, struct socket *other,
1018                                  struct sock *newsk)
1019 {
1020         return security_ops->unix_stream_connect(sock, other, newsk);
1021 }
1022 EXPORT_SYMBOL(security_unix_stream_connect);
1023
1024 int security_unix_may_send(struct socket *sock,  struct socket *other)
1025 {
1026         return security_ops->unix_may_send(sock, other);
1027 }
1028 EXPORT_SYMBOL(security_unix_may_send);
1029
1030 int security_socket_create(int family, int type, int protocol, int kern)
1031 {
1032         return security_ops->socket_create(family, type, protocol, kern);
1033 }
1034
1035 int security_socket_post_create(struct socket *sock, int family,
1036                                 int type, int protocol, int kern)
1037 {
1038         return security_ops->socket_post_create(sock, family, type,
1039                                                 protocol, kern);
1040 }
1041
1042 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1043 {
1044         return security_ops->socket_bind(sock, address, addrlen);
1045 }
1046
1047 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1048 {
1049         return security_ops->socket_connect(sock, address, addrlen);
1050 }
1051
1052 int security_socket_listen(struct socket *sock, int backlog)
1053 {
1054         return security_ops->socket_listen(sock, backlog);
1055 }
1056
1057 int security_socket_accept(struct socket *sock, struct socket *newsock)
1058 {
1059         return security_ops->socket_accept(sock, newsock);
1060 }
1061
1062 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1063 {
1064         return security_ops->socket_sendmsg(sock, msg, size);
1065 }
1066
1067 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1068                             int size, int flags)
1069 {
1070         return security_ops->socket_recvmsg(sock, msg, size, flags);
1071 }
1072
1073 int security_socket_getsockname(struct socket *sock)
1074 {
1075         return security_ops->socket_getsockname(sock);
1076 }
1077
1078 int security_socket_getpeername(struct socket *sock)
1079 {
1080         return security_ops->socket_getpeername(sock);
1081 }
1082
1083 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1084 {
1085         return security_ops->socket_getsockopt(sock, level, optname);
1086 }
1087
1088 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1089 {
1090         return security_ops->socket_setsockopt(sock, level, optname);
1091 }
1092
1093 int security_socket_shutdown(struct socket *sock, int how)
1094 {
1095         return security_ops->socket_shutdown(sock, how);
1096 }
1097
1098 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1099 {
1100         return security_ops->socket_sock_rcv_skb(sk, skb);
1101 }
1102 EXPORT_SYMBOL(security_sock_rcv_skb);
1103
1104 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1105                                       int __user *optlen, unsigned len)
1106 {
1107         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1108 }
1109
1110 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1111 {
1112         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1113 }
1114 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1115
1116 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1117 {
1118         return security_ops->sk_alloc_security(sk, family, priority);
1119 }
1120
1121 void security_sk_free(struct sock *sk)
1122 {
1123         security_ops->sk_free_security(sk);
1124 }
1125
1126 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1127 {
1128         security_ops->sk_clone_security(sk, newsk);
1129 }
1130
1131 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1132 {
1133         security_ops->sk_getsecid(sk, &fl->secid);
1134 }
1135 EXPORT_SYMBOL(security_sk_classify_flow);
1136
1137 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1138 {
1139         security_ops->req_classify_flow(req, fl);
1140 }
1141 EXPORT_SYMBOL(security_req_classify_flow);
1142
1143 void security_sock_graft(struct sock *sk, struct socket *parent)
1144 {
1145         security_ops->sock_graft(sk, parent);
1146 }
1147 EXPORT_SYMBOL(security_sock_graft);
1148
1149 int security_inet_conn_request(struct sock *sk,
1150                         struct sk_buff *skb, struct request_sock *req)
1151 {
1152         return security_ops->inet_conn_request(sk, skb, req);
1153 }
1154 EXPORT_SYMBOL(security_inet_conn_request);
1155
1156 void security_inet_csk_clone(struct sock *newsk,
1157                         const struct request_sock *req)
1158 {
1159         security_ops->inet_csk_clone(newsk, req);
1160 }
1161
1162 void security_inet_conn_established(struct sock *sk,
1163                         struct sk_buff *skb)
1164 {
1165         security_ops->inet_conn_established(sk, skb);
1166 }
1167
1168 int security_tun_dev_create(void)
1169 {
1170         return security_ops->tun_dev_create();
1171 }
1172 EXPORT_SYMBOL(security_tun_dev_create);
1173
1174 void security_tun_dev_post_create(struct sock *sk)
1175 {
1176         return security_ops->tun_dev_post_create(sk);
1177 }
1178 EXPORT_SYMBOL(security_tun_dev_post_create);
1179
1180 int security_tun_dev_attach(struct sock *sk)
1181 {
1182         return security_ops->tun_dev_attach(sk);
1183 }
1184 EXPORT_SYMBOL(security_tun_dev_attach);
1185
1186 #endif  /* CONFIG_SECURITY_NETWORK */
1187
1188 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1189
1190 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1191 {
1192         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1193 }
1194 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1195
1196 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1197                               struct xfrm_sec_ctx **new_ctxp)
1198 {
1199         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1200 }
1201
1202 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1203 {
1204         security_ops->xfrm_policy_free_security(ctx);
1205 }
1206 EXPORT_SYMBOL(security_xfrm_policy_free);
1207
1208 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1209 {
1210         return security_ops->xfrm_policy_delete_security(ctx);
1211 }
1212
1213 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1214 {
1215         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1216 }
1217 EXPORT_SYMBOL(security_xfrm_state_alloc);
1218
1219 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1220                                       struct xfrm_sec_ctx *polsec, u32 secid)
1221 {
1222         if (!polsec)
1223                 return 0;
1224         /*
1225          * We want the context to be taken from secid which is usually
1226          * from the sock.
1227          */
1228         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1229 }
1230
1231 int security_xfrm_state_delete(struct xfrm_state *x)
1232 {
1233         return security_ops->xfrm_state_delete_security(x);
1234 }
1235 EXPORT_SYMBOL(security_xfrm_state_delete);
1236
1237 void security_xfrm_state_free(struct xfrm_state *x)
1238 {
1239         security_ops->xfrm_state_free_security(x);
1240 }
1241
1242 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1243 {
1244         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1245 }
1246
1247 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1248                                        struct xfrm_policy *xp, struct flowi *fl)
1249 {
1250         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1251 }
1252
1253 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1254 {
1255         return security_ops->xfrm_decode_session(skb, secid, 1);
1256 }
1257
1258 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1259 {
1260         int rc = security_ops->xfrm_decode_session(skb, &fl->secid, 0);
1261
1262         BUG_ON(rc);
1263 }
1264 EXPORT_SYMBOL(security_skb_classify_flow);
1265
1266 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1267
1268 #ifdef CONFIG_KEYS
1269
1270 int security_key_alloc(struct key *key, const struct cred *cred,
1271                        unsigned long flags)
1272 {
1273         return security_ops->key_alloc(key, cred, flags);
1274 }
1275
1276 void security_key_free(struct key *key)
1277 {
1278         security_ops->key_free(key);
1279 }
1280
1281 int security_key_permission(key_ref_t key_ref,
1282                             const struct cred *cred, key_perm_t perm)
1283 {
1284         return security_ops->key_permission(key_ref, cred, perm);
1285 }
1286
1287 int security_key_getsecurity(struct key *key, char **_buffer)
1288 {
1289         return security_ops->key_getsecurity(key, _buffer);
1290 }
1291
1292 int security_key_session_to_parent(const struct cred *cred,
1293                                    const struct cred *parent_cred,
1294                                    struct key *key)
1295 {
1296         return security_ops->key_session_to_parent(cred, parent_cred, key);
1297 }
1298
1299 #endif  /* CONFIG_KEYS */
1300
1301 #ifdef CONFIG_AUDIT
1302
1303 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1304 {
1305         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1306 }
1307
1308 int security_audit_rule_known(struct audit_krule *krule)
1309 {
1310         return security_ops->audit_rule_known(krule);
1311 }
1312
1313 void security_audit_rule_free(void *lsmrule)
1314 {
1315         security_ops->audit_rule_free(lsmrule);
1316 }
1317
1318 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1319                               struct audit_context *actx)
1320 {
1321         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1322 }
1323
1324 #endif /* CONFIG_AUDIT */