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/integrity.h>
  20 #include <linux/ima.h>
  21 #include <linux/evm.h>
  22
  23 #define MAX_LSM_EVM_XATTR       2
  24
  25 /* Boot-time LSM user choice */
  26 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  27         CONFIG_DEFAULT_SECURITY;
  28
  29 static struct security_operations *security_ops;
  30 static struct security_operations default_security_ops = {
  31         .name   = "default",
  32 };
  33
  34 static inline int __init verify(struct security_operations *ops)
  35 {
  36         /* verify the security_operations structure exists */
  37         if (!ops)
  38                 return -EINVAL;
  39         security_fixup_ops(ops);
  40         return 0;
  41 }
  42
  43 static void __init do_security_initcalls(void)
  44 {
  45         initcall_t *call;
  46         call = __security_initcall_start;
  47         while (call < __security_initcall_end) {
  48                 (*call) ();
  49                 call++;
  50         }
  51 }
  52
  53 /**
  54  * security_init - initializes the security framework
  55  *
  56  * This should be called early in the kernel initialization sequence.
  57  */
  58 int __init security_init(void)
  59 {
  60         printk(KERN_INFO "Security Framework initialized\n");
  61
  62         security_fixup_ops(&default_security_ops);
  63         security_ops = &default_security_ops;
  64         do_security_initcalls();
  65
  66         return 0;
  67 }
  68
  69 void reset_security_ops(void)
  70 {
  71         security_ops = &default_security_ops;
  72 }
  73
  74 /* Save user chosen LSM */
  75 static int __init choose_lsm(char *str)
  76 {
  77         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  78         return 1;
  79 }
  80 __setup("security=", choose_lsm);
  81
  82 /**
  83  * security_module_enable - Load given security module on boot ?
  84  * @ops: a pointer to the struct security_operations that is to be checked.
  85  *
  86  * Each LSM must pass this method before registering its own operations
  87  * to avoid security registration races. This method may also be used
  88  * to check if your LSM is currently loaded during kernel initialization.
  89  *
  90  * Return true if:
  91  *      -The passed LSM is the one chosen by user at boot time,
  92  *      -or the passed LSM is configured as the default and the user did not
  93  *       choose an alternate LSM at boot time.
  94  * Otherwise, return false.
  95  */
  96 int __init security_module_enable(struct security_operations *ops)
  97 {
  98         return !strcmp(ops->name, chosen_lsm);
  99 }
 100
 101 /**
 102  * register_security - registers a security framework with the kernel
 103  * @ops: a pointer to the struct security_options that is to be registered
 104  *
 105  * This function allows a security module to register itself with the
 106  * kernel security subsystem.  Some rudimentary checking is done on the @ops
 107  * value passed to this function. You'll need to check first if your LSM
 108  * is allowed to register its @ops by calling security_module_enable(@ops).
 109  *
 110  * If there is already a security module registered with the kernel,
 111  * an error will be returned.  Otherwise %0 is returned on success.
 112  */
 113 int __init register_security(struct security_operations *ops)
 114 {
 115         if (verify(ops)) {
 116                 printk(KERN_DEBUG "%s could not verify "
 117                        "security_operations structure.\n", __func__);
 118                 return -EINVAL;
 119         }
 120
 121         if (security_ops != &default_security_ops)
 122                 return -EAGAIN;
 123
 124         security_ops = ops;
 125
 126         return 0;
 127 }
 128
 129 /* Security operations */
 130
 131 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 132 {
 133         return security_ops->ptrace_access_check(child, mode);
 134 }
 135
 136 int security_ptrace_traceme(struct task_struct *parent)
 137 {
 138         return security_ops->ptrace_traceme(parent);
 139 }
 140
 141 int security_capget(struct task_struct *target,
 142                      kernel_cap_t *effective,
 143                      kernel_cap_t *inheritable,
 144                      kernel_cap_t *permitted)
 145 {
 146         return security_ops->capget(target, effective, inheritable, permitted);
 147 }
 148
 149 int security_capset(struct cred *new, const struct cred *old,
 150                     const kernel_cap_t *effective,
 151                     const kernel_cap_t *inheritable,
 152                     const kernel_cap_t *permitted)
 153 {
 154         return security_ops->capset(new, old,
 155                                     effective, inheritable, permitted);
 156 }
 157
 158 int security_capable(const struct cred *cred, struct user_namespace *ns,
 159                      int cap)
 160 {
 161         return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT);
 162 }
 163
 164 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 165                              int cap)
 166 {
 167         return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT);
 168 }
 169
 170 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 171 {
 172         return security_ops->quotactl(cmds, type, id, sb);
 173 }
 174
 175 int security_quota_on(struct dentry *dentry)
 176 {
 177         return security_ops->quota_on(dentry);
 178 }
 179
 180 int security_syslog(int type)
 181 {
 182         return security_ops->syslog(type);
 183 }
 184
 185 int security_settime(const struct timespec *ts, const struct timezone *tz)
 186 {
 187         return security_ops->settime(ts, tz);
 188 }
 189
 190 int security_vm_enough_memory(long pages)
 191 {
 192         WARN_ON(current->mm == NULL);
 193         return security_ops->vm_enough_memory(current->mm, pages);
 194 }
 195
 196 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 197 {
 198         WARN_ON(mm == NULL);
 199         return security_ops->vm_enough_memory(mm, pages);
 200 }
 201
 202 int security_vm_enough_memory_kern(long pages)
 203 {
 204         /* If current->mm is a kernel thread then we will pass NULL,
 205            for this specific case that is fine */
 206         return security_ops->vm_enough_memory(current->mm, pages);
 207 }
 208
 209 int security_bprm_set_creds(struct linux_binprm *bprm)
 210 {
 211         return security_ops->bprm_set_creds(bprm);
 212 }
 213
 214 int security_bprm_check(struct linux_binprm *bprm)
 215 {
 216         int ret;
 217
 218         ret = security_ops->bprm_check_security(bprm);
 219         if (ret)
 220                 return ret;
 221         return ima_bprm_check(bprm);
 222 }
 223
 224 void security_bprm_committing_creds(struct linux_binprm *bprm)
 225 {
 226         security_ops->bprm_committing_creds(bprm);
 227 }
 228
 229 void security_bprm_committed_creds(struct linux_binprm *bprm)
 230 {
 231         security_ops->bprm_committed_creds(bprm);
 232 }
 233
 234 int security_bprm_secureexec(struct linux_binprm *bprm)
 235 {
 236         return security_ops->bprm_secureexec(bprm);
 237 }
 238
 239 int security_sb_alloc(struct super_block *sb)
 240 {
 241         return security_ops->sb_alloc_security(sb);
 242 }
 243
 244 void security_sb_free(struct super_block *sb)
 245 {
 246         security_ops->sb_free_security(sb);
 247 }
 248
 249 int security_sb_copy_data(char *orig, char *copy)
 250 {
 251         return security_ops->sb_copy_data(orig, copy);
 252 }
 253 EXPORT_SYMBOL(security_sb_copy_data);
 254
 255 int security_sb_remount(struct super_block *sb, void *data)
 256 {
 257         return security_ops->sb_remount(sb, data);
 258 }
 259
 260 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 261 {
 262         return security_ops->sb_kern_mount(sb, flags, data);
 263 }
 264
 265 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 266 {
 267         return security_ops->sb_show_options(m, sb);
 268 }
 269
 270 int security_sb_statfs(struct dentry *dentry)
 271 {
 272         return security_ops->sb_statfs(dentry);
 273 }
 274
 275 int security_sb_mount(char *dev_name, struct path *path,
 276                        char *type, unsigned long flags, void *data)
 277 {
 278         return security_ops->sb_mount(dev_name, path, type, flags, data);
 279 }
 280
 281 int security_sb_umount(struct vfsmount *mnt, int flags)
 282 {
 283         return security_ops->sb_umount(mnt, flags);
 284 }
 285
 286 int security_sb_pivotroot(struct path *old_path, struct path *new_path)
 287 {
 288         return security_ops->sb_pivotroot(old_path, new_path);
 289 }
 290
 291 int security_sb_set_mnt_opts(struct super_block *sb,
 292                                 struct security_mnt_opts *opts)
 293 {
 294         return security_ops->sb_set_mnt_opts(sb, opts);
 295 }
 296 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 297
 298 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
 299                                 struct super_block *newsb)
 300 {
 301         security_ops->sb_clone_mnt_opts(oldsb, newsb);
 302 }
 303 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 304
 305 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 306 {
 307         return security_ops->sb_parse_opts_str(options, opts);
 308 }
 309 EXPORT_SYMBOL(security_sb_parse_opts_str);
 310
 311 int security_inode_alloc(struct inode *inode)
 312 {
 313         inode->i_security = NULL;
 314         return security_ops->inode_alloc_security(inode);
 315 }
 316
 317 void security_inode_free(struct inode *inode)
 318 {
 319         integrity_inode_free(inode);
 320         security_ops->inode_free_security(inode);
 321 }
 322
 323 int security_inode_init_security(struct inode *inode, struct inode *dir,
 324                                  const struct qstr *qstr,
 325                                  const initxattrs initxattrs, void *fs_data)
 326 {
 327         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
 328         struct xattr *lsm_xattr, *evm_xattr, *xattr;
 329         int ret;
 330
 331         if (unlikely(IS_PRIVATE(inode)))
 332                 return 0;
 333
 334         memset(new_xattrs, 0, sizeof new_xattrs);
 335         if (!initxattrs)
 336                 return security_ops->inode_init_security(inode, dir, qstr,
 337                                                          NULL, NULL, NULL);
 338         lsm_xattr = new_xattrs;
 339         ret = security_ops->inode_init_security(inode, dir, qstr,
 340                                                 &lsm_xattr->name,
 341                                                 &lsm_xattr->value,
 342                                                 &lsm_xattr->value_len);
 343         if (ret)
 344                 goto out;
 345
 346         evm_xattr = lsm_xattr + 1;
 347         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
 348         if (ret)
 349                 goto out;
 350         ret = initxattrs(inode, new_xattrs, fs_data);
 351 out:
 352         for (xattr = new_xattrs; xattr->name != NULL; xattr++) {
 353                 kfree(xattr->name);
 354                 kfree(xattr->value);
 355         }
 356         return (ret == -EOPNOTSUPP) ? 0 : ret;
 357 }
 358 EXPORT_SYMBOL(security_inode_init_security);
 359
 360 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 361                                      const struct qstr *qstr, char **name,
 362                                      void **value, size_t *len)
 363 {
 364         if (unlikely(IS_PRIVATE(inode)))
 365                 return -EOPNOTSUPP;
 366         return security_ops->inode_init_security(inode, dir, qstr, name, value,
 367                                                  len);
 368 }
 369 EXPORT_SYMBOL(security_old_inode_init_security);
 370
 371 #ifdef CONFIG_SECURITY_PATH
 372 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode,
 373                         unsigned int dev)
 374 {
 375         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 376                 return 0;
 377         return security_ops->path_mknod(dir, dentry, mode, dev);
 378 }
 379 EXPORT_SYMBOL(security_path_mknod);
 380
 381 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode)
 382 {
 383         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 384                 return 0;
 385         return security_ops->path_mkdir(dir, dentry, mode);
 386 }
 387 EXPORT_SYMBOL(security_path_mkdir);
 388
 389 int security_path_rmdir(struct path *dir, struct dentry *dentry)
 390 {
 391         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 392                 return 0;
 393         return security_ops->path_rmdir(dir, dentry);
 394 }
 395
 396 int security_path_unlink(struct path *dir, struct dentry *dentry)
 397 {
 398         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 399                 return 0;
 400         return security_ops->path_unlink(dir, dentry);
 401 }
 402 EXPORT_SYMBOL(security_path_unlink);
 403
 404 int security_path_symlink(struct path *dir, struct dentry *dentry,
 405                           const char *old_name)
 406 {
 407         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 408                 return 0;
 409         return security_ops->path_symlink(dir, 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 EXPORT_SYMBOL(security_path_rename);
 430
 431 int security_path_truncate(struct path *path)
 432 {
 433         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 434                 return 0;
 435         return security_ops->path_truncate(path);
 436 }
 437
 438 int security_path_chmod(struct path *path, umode_t mode)
 439 {
 440         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 441                 return 0;
 442         return security_ops->path_chmod(path, mode);
 443 }
 444
 445 int security_path_chown(struct path *path, uid_t uid, gid_t gid)
 446 {
 447         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 448                 return 0;
 449         return security_ops->path_chown(path, uid, gid);
 450 }
 451
 452 int security_path_chroot(struct path *path)
 453 {
 454         return security_ops->path_chroot(path);
 455 }
 456 #endif
 457
 458 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
 459 {
 460         if (unlikely(IS_PRIVATE(dir)))
 461                 return 0;
 462         return security_ops->inode_create(dir, dentry, mode);
 463 }
 464 EXPORT_SYMBOL_GPL(security_inode_create);
 465
 466 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 467                          struct dentry *new_dentry)
 468 {
 469         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 470                 return 0;
 471         return security_ops->inode_link(old_dentry, dir, new_dentry);
 472 }
 473
 474 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 475 {
 476         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 477                 return 0;
 478         return security_ops->inode_unlink(dir, dentry);
 479 }
 480
 481 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 482                             const char *old_name)
 483 {
 484         if (unlikely(IS_PRIVATE(dir)))
 485                 return 0;
 486         return security_ops->inode_symlink(dir, dentry, old_name);
 487 }
 488
 489 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 490 {
 491         if (unlikely(IS_PRIVATE(dir)))
 492                 return 0;
 493         return security_ops->inode_mkdir(dir, dentry, mode);
 494 }
 495 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 496
 497 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 498 {
 499         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 500                 return 0;
 501         return security_ops->inode_rmdir(dir, dentry);
 502 }
 503
 504 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
 505 {
 506         if (unlikely(IS_PRIVATE(dir)))
 507                 return 0;
 508         return security_ops->inode_mknod(dir, dentry, mode, dev);
 509 }
 510
 511 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 512                            struct inode *new_dir, struct dentry *new_dentry)
 513 {
 514         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 515             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 516                 return 0;
 517         return security_ops->inode_rename(old_dir, old_dentry,
 518                                            new_dir, new_dentry);
 519 }
 520
 521 int security_inode_readlink(struct dentry *dentry)
 522 {
 523         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 524                 return 0;
 525         return security_ops->inode_readlink(dentry);
 526 }
 527
 528 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 529 {
 530         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 531                 return 0;
 532         return security_ops->inode_follow_link(dentry, nd);
 533 }
 534
 535 int security_inode_permission(struct inode *inode, int mask)
 536 {
 537         if (unlikely(IS_PRIVATE(inode)))
 538                 return 0;
 539         return security_ops->inode_permission(inode, mask);
 540 }
 541
 542 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 543 {
 544         int ret;
 545
 546         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 547                 return 0;
 548         ret = security_ops->inode_setattr(dentry, attr);
 549         if (ret)
 550                 return ret;
 551         return evm_inode_setattr(dentry, attr);
 552 }
 553 EXPORT_SYMBOL_GPL(security_inode_setattr);
 554
 555 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 556 {
 557         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 558                 return 0;
 559         return security_ops->inode_getattr(mnt, dentry);
 560 }
 561
 562 int security_inode_setxattr(struct dentry *dentry, const char *name,
 563                             const void *value, size_t size, int flags)
 564 {
 565         int ret;
 566
 567         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 568                 return 0;
 569         ret = security_ops->inode_setxattr(dentry, name, value, size, flags);
 570         if (ret)
 571                 return ret;
 572         return evm_inode_setxattr(dentry, name, value, size);
 573 }
 574
 575 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 576                                   const void *value, size_t size, int flags)
 577 {
 578         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 579                 return;
 580         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 581         evm_inode_post_setxattr(dentry, name, value, size);
 582 }
 583
 584 int security_inode_getxattr(struct dentry *dentry, const char *name)
 585 {
 586         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 587                 return 0;
 588         return security_ops->inode_getxattr(dentry, name);
 589 }
 590
 591 int security_inode_listxattr(struct dentry *dentry)
 592 {
 593         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 594                 return 0;
 595         return security_ops->inode_listxattr(dentry);
 596 }
 597
 598 int security_inode_removexattr(struct dentry *dentry, const char *name)
 599 {
 600         int ret;
 601
 602         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 603                 return 0;
 604         ret = security_ops->inode_removexattr(dentry, name);
 605         if (ret)
 606                 return ret;
 607         return evm_inode_removexattr(dentry, name);
 608 }
 609
 610 int security_inode_need_killpriv(struct dentry *dentry)
 611 {
 612         return security_ops->inode_need_killpriv(dentry);
 613 }
 614
 615 int security_inode_killpriv(struct dentry *dentry)
 616 {
 617         return security_ops->inode_killpriv(dentry);
 618 }
 619
 620 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 621 {
 622         if (unlikely(IS_PRIVATE(inode)))
 623                 return -EOPNOTSUPP;
 624         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 625 }
 626
 627 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 628 {
 629         if (unlikely(IS_PRIVATE(inode)))
 630                 return -EOPNOTSUPP;
 631         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 632 }
 633
 634 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 635 {
 636         if (unlikely(IS_PRIVATE(inode)))
 637                 return 0;
 638         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 639 }
 640
 641 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 642 {
 643         security_ops->inode_getsecid(inode, secid);
 644 }
 645
 646 int security_file_permission(struct file *file, int mask)
 647 {
 648         int ret;
 649
 650         ret = security_ops->file_permission(file, mask);
 651         if (ret)
 652                 return ret;
 653
 654         return fsnotify_perm(file, mask);
 655 }
 656
 657 int security_file_alloc(struct file *file)
 658 {
 659         return security_ops->file_alloc_security(file);
 660 }
 661
 662 void security_file_free(struct file *file)
 663 {
 664         security_ops->file_free_security(file);
 665 }
 666
 667 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 668 {
 669         return security_ops->file_ioctl(file, cmd, arg);
 670 }
 671
 672 int security_file_mmap(struct file *file, unsigned long reqprot,
 673                         unsigned long prot, unsigned long flags,
 674                         unsigned long addr, unsigned long addr_only)
 675 {
 676         int ret;
 677
 678         ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 679         if (ret)
 680                 return ret;
 681         return ima_file_mmap(file, prot);
 682 }
 683
 684 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 685                             unsigned long prot)
 686 {
 687         return security_ops->file_mprotect(vma, reqprot, prot);
 688 }
 689
 690 int security_file_lock(struct file *file, unsigned int cmd)
 691 {
 692         return security_ops->file_lock(file, cmd);
 693 }
 694
 695 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 696 {
 697         return security_ops->file_fcntl(file, cmd, arg);
 698 }
 699
 700 int security_file_set_fowner(struct file *file)
 701 {
 702         return security_ops->file_set_fowner(file);
 703 }
 704
 705 int security_file_send_sigiotask(struct task_struct *tsk,
 706                                   struct fown_struct *fown, int sig)
 707 {
 708         return security_ops->file_send_sigiotask(tsk, fown, sig);
 709 }
 710
 711 int security_file_receive(struct file *file)
 712 {
 713         return security_ops->file_receive(file);
 714 }
 715
 716 int security_dentry_open(struct file *file, const struct cred *cred)
 717 {
 718         int ret;
 719
 720         ret = security_ops->dentry_open(file, cred);
 721         if (ret)
 722                 return ret;
 723
 724         return fsnotify_perm(file, MAY_OPEN);
 725 }
 726
 727 int security_task_create(unsigned long clone_flags)
 728 {
 729         return security_ops->task_create(clone_flags);
 730 }
 731
 732 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 733 {
 734         return security_ops->cred_alloc_blank(cred, gfp);
 735 }
 736
 737 void security_cred_free(struct cred *cred)
 738 {
 739         security_ops->cred_free(cred);
 740 }
 741
 742 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 743 {
 744         return security_ops->cred_prepare(new, old, gfp);
 745 }
 746
 747 void security_transfer_creds(struct cred *new, const struct cred *old)
 748 {
 749         security_ops->cred_transfer(new, old);
 750 }
 751
 752 int security_kernel_act_as(struct cred *new, u32 secid)
 753 {
 754         return security_ops->kernel_act_as(new, secid);
 755 }
 756
 757 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 758 {
 759         return security_ops->kernel_create_files_as(new, inode);
 760 }
 761
 762 int security_kernel_module_request(char *kmod_name)
 763 {
 764         return security_ops->kernel_module_request(kmod_name);
 765 }
 766
 767 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 768                              int flags)
 769 {
 770         return security_ops->task_fix_setuid(new, old, flags);
 771 }
 772
 773 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 774 {
 775         return security_ops->task_setpgid(p, pgid);
 776 }
 777
 778 int security_task_getpgid(struct task_struct *p)
 779 {
 780         return security_ops->task_getpgid(p);
 781 }
 782
 783 int security_task_getsid(struct task_struct *p)
 784 {
 785         return security_ops->task_getsid(p);
 786 }
 787
 788 void security_task_getsecid(struct task_struct *p, u32 *secid)
 789 {
 790         security_ops->task_getsecid(p, secid);
 791 }
 792 EXPORT_SYMBOL(security_task_getsecid);
 793
 794 int security_task_setnice(struct task_struct *p, int nice)
 795 {
 796         return security_ops->task_setnice(p, nice);
 797 }
 798
 799 int security_task_setioprio(struct task_struct *p, int ioprio)
 800 {
 801         return security_ops->task_setioprio(p, ioprio);
 802 }
 803
 804 int security_task_getioprio(struct task_struct *p)
 805 {
 806         return security_ops->task_getioprio(p);
 807 }
 808
 809 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
 810                 struct rlimit *new_rlim)
 811 {
 812         return security_ops->task_setrlimit(p, resource, new_rlim);
 813 }
 814
 815 int security_task_setscheduler(struct task_struct *p)
 816 {
 817         return security_ops->task_setscheduler(p);
 818 }
 819
 820 int security_task_getscheduler(struct task_struct *p)
 821 {
 822         return security_ops->task_getscheduler(p);
 823 }
 824
 825 int security_task_movememory(struct task_struct *p)
 826 {
 827         return security_ops->task_movememory(p);
 828 }
 829
 830 int security_task_kill(struct task_struct *p, struct siginfo *info,
 831                         int sig, u32 secid)
 832 {
 833         return security_ops->task_kill(p, info, sig, secid);
 834 }
 835
 836 int security_task_wait(struct task_struct *p)
 837 {
 838         return security_ops->task_wait(p);
 839 }
 840
 841 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 842                          unsigned long arg4, unsigned long arg5)
 843 {
 844         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 845 }
 846
 847 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 848 {
 849         security_ops->task_to_inode(p, inode);
 850 }
 851
 852 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 853 {
 854         return security_ops->ipc_permission(ipcp, flag);
 855 }
 856
 857 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 858 {
 859         security_ops->ipc_getsecid(ipcp, secid);
 860 }
 861
 862 int security_msg_msg_alloc(struct msg_msg *msg)
 863 {
 864         return security_ops->msg_msg_alloc_security(msg);
 865 }
 866
 867 void security_msg_msg_free(struct msg_msg *msg)
 868 {
 869         security_ops->msg_msg_free_security(msg);
 870 }
 871
 872 int security_msg_queue_alloc(struct msg_queue *msq)
 873 {
 874         return security_ops->msg_queue_alloc_security(msq);
 875 }
 876
 877 void security_msg_queue_free(struct msg_queue *msq)
 878 {
 879         security_ops->msg_queue_free_security(msq);
 880 }
 881
 882 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 883 {
 884         return security_ops->msg_queue_associate(msq, msqflg);
 885 }
 886
 887 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 888 {
 889         return security_ops->msg_queue_msgctl(msq, cmd);
 890 }
 891
 892 int security_msg_queue_msgsnd(struct msg_queue *msq,
 893                                struct msg_msg *msg, int msqflg)
 894 {
 895         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 896 }
 897
 898 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 899                                struct task_struct *target, long type, int mode)
 900 {
 901         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 902 }
 903
 904 int security_shm_alloc(struct shmid_kernel *shp)
 905 {
 906         return security_ops->shm_alloc_security(shp);
 907 }
 908
 909 void security_shm_free(struct shmid_kernel *shp)
 910 {
 911         security_ops->shm_free_security(shp);
 912 }
 913
 914 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 915 {
 916         return security_ops->shm_associate(shp, shmflg);
 917 }
 918
 919 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 920 {
 921         return security_ops->shm_shmctl(shp, cmd);
 922 }
 923
 924 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 925 {
 926         return security_ops->shm_shmat(shp, shmaddr, shmflg);
 927 }
 928
 929 int security_sem_alloc(struct sem_array *sma)
 930 {
 931         return security_ops->sem_alloc_security(sma);
 932 }
 933
 934 void security_sem_free(struct sem_array *sma)
 935 {
 936         security_ops->sem_free_security(sma);
 937 }
 938
 939 int security_sem_associate(struct sem_array *sma, int semflg)
 940 {
 941         return security_ops->sem_associate(sma, semflg);
 942 }
 943
 944 int security_sem_semctl(struct sem_array *sma, int cmd)
 945 {
 946         return security_ops->sem_semctl(sma, cmd);
 947 }
 948
 949 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 950                         unsigned nsops, int alter)
 951 {
 952         return security_ops->sem_semop(sma, sops, nsops, alter);
 953 }
 954
 955 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 956 {
 957         if (unlikely(inode && IS_PRIVATE(inode)))
 958                 return;
 959         security_ops->d_instantiate(dentry, inode);
 960 }
 961 EXPORT_SYMBOL(security_d_instantiate);
 962
 963 int security_getprocattr(struct task_struct *p, char *name, char **value)
 964 {
 965         return security_ops->getprocattr(p, name, value);
 966 }
 967
 968 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 969 {
 970         return security_ops->setprocattr(p, name, value, size);
 971 }
 972
 973 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
 974 {
 975         return security_ops->netlink_send(sk, skb);
 976 }
 977
 978 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
 979 {
 980         return security_ops->secid_to_secctx(secid, secdata, seclen);
 981 }
 982 EXPORT_SYMBOL(security_secid_to_secctx);
 983
 984 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 985 {
 986         return security_ops->secctx_to_secid(secdata, seclen, secid);
 987 }
 988 EXPORT_SYMBOL(security_secctx_to_secid);
 989
 990 void security_release_secctx(char *secdata, u32 seclen)
 991 {
 992         security_ops->release_secctx(secdata, seclen);
 993 }
 994 EXPORT_SYMBOL(security_release_secctx);
 995
 996 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
 997 {
 998         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
 999 }
1000 EXPORT_SYMBOL(security_inode_notifysecctx);
1001
1002 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1003 {
1004         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
1005 }
1006 EXPORT_SYMBOL(security_inode_setsecctx);
1007
1008 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1009 {
1010         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
1011 }
1012 EXPORT_SYMBOL(security_inode_getsecctx);
1013
1014 #ifdef CONFIG_SECURITY_NETWORK
1015
1016 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1017 {
1018         return security_ops->unix_stream_connect(sock, other, newsk);
1019 }
1020 EXPORT_SYMBOL(security_unix_stream_connect);
1021
1022 int security_unix_may_send(struct socket *sock,  struct socket *other)
1023 {
1024         return security_ops->unix_may_send(sock, other);
1025 }
1026 EXPORT_SYMBOL(security_unix_may_send);
1027
1028 int security_socket_create(int family, int type, int protocol, int kern)
1029 {
1030         return security_ops->socket_create(family, type, protocol, kern);
1031 }
1032
1033 int security_socket_post_create(struct socket *sock, int family,
1034                                 int type, int protocol, int kern)
1035 {
1036         return security_ops->socket_post_create(sock, family, type,
1037                                                 protocol, kern);
1038 }
1039
1040 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1041 {
1042         return security_ops->socket_bind(sock, address, addrlen);
1043 }
1044
1045 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1046 {
1047         return security_ops->socket_connect(sock, address, addrlen);
1048 }
1049
1050 int security_socket_listen(struct socket *sock, int backlog)
1051 {
1052         return security_ops->socket_listen(sock, backlog);
1053 }
1054
1055 int security_socket_accept(struct socket *sock, struct socket *newsock)
1056 {
1057         return security_ops->socket_accept(sock, newsock);
1058 }
1059
1060 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1061 {
1062         return security_ops->socket_sendmsg(sock, msg, size);
1063 }
1064
1065 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1066                             int size, int flags)
1067 {
1068         return security_ops->socket_recvmsg(sock, msg, size, flags);
1069 }
1070
1071 int security_socket_getsockname(struct socket *sock)
1072 {
1073         return security_ops->socket_getsockname(sock);
1074 }
1075
1076 int security_socket_getpeername(struct socket *sock)
1077 {
1078         return security_ops->socket_getpeername(sock);
1079 }
1080
1081 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1082 {
1083         return security_ops->socket_getsockopt(sock, level, optname);
1084 }
1085
1086 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1087 {
1088         return security_ops->socket_setsockopt(sock, level, optname);
1089 }
1090
1091 int security_socket_shutdown(struct socket *sock, int how)
1092 {
1093         return security_ops->socket_shutdown(sock, how);
1094 }
1095
1096 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1097 {
1098         return security_ops->socket_sock_rcv_skb(sk, skb);
1099 }
1100 EXPORT_SYMBOL(security_sock_rcv_skb);
1101
1102 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1103                                       int __user *optlen, unsigned len)
1104 {
1105         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1106 }
1107
1108 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1109 {
1110         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1111 }
1112 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1113
1114 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1115 {
1116         return security_ops->sk_alloc_security(sk, family, priority);
1117 }
1118
1119 void security_sk_free(struct sock *sk)
1120 {
1121         security_ops->sk_free_security(sk);
1122 }
1123
1124 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1125 {
1126         security_ops->sk_clone_security(sk, newsk);
1127 }
1128 EXPORT_SYMBOL(security_sk_clone);
1129
1130 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1131 {
1132         security_ops->sk_getsecid(sk, &fl->flowi_secid);
1133 }
1134 EXPORT_SYMBOL(security_sk_classify_flow);
1135
1136 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1137 {
1138         security_ops->req_classify_flow(req, fl);
1139 }
1140 EXPORT_SYMBOL(security_req_classify_flow);
1141
1142 void security_sock_graft(struct sock *sk, struct socket *parent)
1143 {
1144         security_ops->sock_graft(sk, parent);
1145 }
1146 EXPORT_SYMBOL(security_sock_graft);
1147
1148 int security_inet_conn_request(struct sock *sk,
1149                         struct sk_buff *skb, struct request_sock *req)
1150 {
1151         return security_ops->inet_conn_request(sk, skb, req);
1152 }
1153 EXPORT_SYMBOL(security_inet_conn_request);
1154
1155 void security_inet_csk_clone(struct sock *newsk,
1156                         const struct request_sock *req)
1157 {
1158         security_ops->inet_csk_clone(newsk, req);
1159 }
1160
1161 void security_inet_conn_established(struct sock *sk,
1162                         struct sk_buff *skb)
1163 {
1164         security_ops->inet_conn_established(sk, skb);
1165 }
1166
1167 int security_secmark_relabel_packet(u32 secid)
1168 {
1169         return security_ops->secmark_relabel_packet(secid);
1170 }
1171 EXPORT_SYMBOL(security_secmark_relabel_packet);
1172
1173 void security_secmark_refcount_inc(void)
1174 {
1175         security_ops->secmark_refcount_inc();
1176 }
1177 EXPORT_SYMBOL(security_secmark_refcount_inc);
1178
1179 void security_secmark_refcount_dec(void)
1180 {
1181         security_ops->secmark_refcount_dec();
1182 }
1183 EXPORT_SYMBOL(security_secmark_refcount_dec);
1184
1185 int security_tun_dev_create(void)
1186 {
1187         return security_ops->tun_dev_create();
1188 }
1189 EXPORT_SYMBOL(security_tun_dev_create);
1190
1191 void security_tun_dev_post_create(struct sock *sk)
1192 {
1193         return security_ops->tun_dev_post_create(sk);
1194 }
1195 EXPORT_SYMBOL(security_tun_dev_post_create);
1196
1197 int security_tun_dev_attach(struct sock *sk)
1198 {
1199         return security_ops->tun_dev_attach(sk);
1200 }
1201 EXPORT_SYMBOL(security_tun_dev_attach);
1202
1203 #endif  /* CONFIG_SECURITY_NETWORK */
1204
1205 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1206
1207 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1208 {
1209         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1210 }
1211 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1212
1213 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1214                               struct xfrm_sec_ctx **new_ctxp)
1215 {
1216         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1217 }
1218
1219 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1220 {
1221         security_ops->xfrm_policy_free_security(ctx);
1222 }
1223 EXPORT_SYMBOL(security_xfrm_policy_free);
1224
1225 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1226 {
1227         return security_ops->xfrm_policy_delete_security(ctx);
1228 }
1229
1230 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1231 {
1232         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1233 }
1234 EXPORT_SYMBOL(security_xfrm_state_alloc);
1235
1236 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1237                                       struct xfrm_sec_ctx *polsec, u32 secid)
1238 {
1239         if (!polsec)
1240                 return 0;
1241         /*
1242          * We want the context to be taken from secid which is usually
1243          * from the sock.
1244          */
1245         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1246 }
1247
1248 int security_xfrm_state_delete(struct xfrm_state *x)
1249 {
1250         return security_ops->xfrm_state_delete_security(x);
1251 }
1252 EXPORT_SYMBOL(security_xfrm_state_delete);
1253
1254 void security_xfrm_state_free(struct xfrm_state *x)
1255 {
1256         security_ops->xfrm_state_free_security(x);
1257 }
1258
1259 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1260 {
1261         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1262 }
1263
1264 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1265                                        struct xfrm_policy *xp,
1266                                        const struct flowi *fl)
1267 {
1268         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1269 }
1270
1271 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1272 {
1273         return security_ops->xfrm_decode_session(skb, secid, 1);
1274 }
1275
1276 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1277 {
1278         int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0);
1279
1280         BUG_ON(rc);
1281 }
1282 EXPORT_SYMBOL(security_skb_classify_flow);
1283
1284 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1285
1286 #ifdef CONFIG_KEYS
1287
1288 int security_key_alloc(struct key *key, const struct cred *cred,
1289                        unsigned long flags)
1290 {
1291         return security_ops->key_alloc(key, cred, flags);
1292 }
1293
1294 void security_key_free(struct key *key)
1295 {
1296         security_ops->key_free(key);
1297 }
1298
1299 int security_key_permission(key_ref_t key_ref,
1300                             const struct cred *cred, key_perm_t perm)
1301 {
1302         return security_ops->key_permission(key_ref, cred, perm);
1303 }
1304
1305 int security_key_getsecurity(struct key *key, char **_buffer)
1306 {
1307         return security_ops->key_getsecurity(key, _buffer);
1308 }
1309
1310 #endif  /* CONFIG_KEYS */
1311
1312 #ifdef CONFIG_AUDIT
1313
1314 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1315 {
1316         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1317 }
1318
1319 int security_audit_rule_known(struct audit_krule *krule)
1320 {
1321         return security_ops->audit_rule_known(krule);
1322 }
1323
1324 void security_audit_rule_free(void *lsmrule)
1325 {
1326         security_ops->audit_rule_free(lsmrule);
1327 }
1328
1329 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1330                               struct audit_context *actx)
1331 {
1332         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1333 }
1334
1335 #endif /* CONFIG_AUDIT */