security/security.c

   1 /*
   2  * Security plug functions
   3  *
   4  * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
   5  * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
   6  * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
   7  *
   8  *      This program is free software; you can redistribute it and/or modify
   9  *      it under the terms of the GNU General Public License as published by
  10  *      the Free Software Foundation; either version 2 of the License, or
  11  *      (at your option) any later version.
  12  */
  13
  14 #include <linux/capability.h>
  15 #include <linux/module.h>
  16 #include <linux/init.h>
  17 #include <linux/kernel.h>
  18 #include <linux/security.h>
  19 #include <linux/ima.h>
  20
  21 /* Boot-time LSM user choice */
  22 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  23         CONFIG_DEFAULT_SECURITY;
  24
  25 /* things that live in capability.c */
  26 extern void __init security_fixup_ops(struct security_operations *ops);
  27
  28 static struct security_operations *security_ops;
  29 static struct security_operations default_security_ops = {
  30         .name   = "default",
  31 };
  32
  33 static inline int __init verify(struct security_operations *ops)
  34 {
  35         /* verify the security_operations structure exists */
  36         if (!ops)
  37                 return -EINVAL;
  38         security_fixup_ops(ops);
  39         return 0;
  40 }
  41
  42 static void __init do_security_initcalls(void)
  43 {
  44         initcall_t *call;
  45         call = __security_initcall_start;
  46         while (call < __security_initcall_end) {
  47                 (*call) ();
  48                 call++;
  49         }
  50 }
  51
  52 /**
  53  * security_init - initializes the security framework
  54  *
  55  * This should be called early in the kernel initialization sequence.
  56  */
  57 int __init security_init(void)
  58 {
  59         printk(KERN_INFO "Security Framework initialized\n");
  60
  61         security_fixup_ops(&default_security_ops);
  62         security_ops = &default_security_ops;
  63         do_security_initcalls();
  64
  65         return 0;
  66 }
  67
  68 void reset_security_ops(void)
  69 {
  70         security_ops = &default_security_ops;
  71 }
  72
  73 /* Save user chosen LSM */
  74 static int __init choose_lsm(char *str)
  75 {
  76         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  77         return 1;
  78 }
  79 __setup("security=", choose_lsm);
  80
  81 /**
  82  * security_module_enable - Load given security module on boot ?
  83  * @ops: a pointer to the struct security_operations that is to be checked.
  84  *
  85  * Each LSM must pass this method before registering its own operations
  86  * to avoid security registration races. This method may also be used
  87  * to check if your LSM is currently loaded during kernel initialization.
  88  *
  89  * Return true if:
  90  *      -The passed LSM is the one chosen by user at boot time,
  91  *      -or the passed LSM is configured as the default and the user did not
  92  *       choose an alternate LSM at boot time,
  93  *      -or there is no default LSM set and the user didn't specify a
  94  *       specific LSM and we're the first to ask for registration permission,
  95  *      -or the passed LSM is currently loaded.
  96  * Otherwise, return false.
  97  */
  98 int __init security_module_enable(struct security_operations *ops)
  99 {
 100         if (!*chosen_lsm)
 101                 strncpy(chosen_lsm, ops->name, SECURITY_NAME_MAX);
 102         else if (strncmp(ops->name, chosen_lsm, SECURITY_NAME_MAX))
 103                 return 0;
 104
 105         return 1;
 106 }
 107
 108 /**
 109  * register_security - registers a security framework with the kernel
 110  * @ops: a pointer to the struct security_options that is to be registered
 111  *
 112  * This function allows a security module to register itself with the
 113  * kernel security subsystem.  Some rudimentary checking is done on the @ops
 114  * value passed to this function. You'll need to check first if your LSM
 115  * is allowed to register its @ops by calling security_module_enable(@ops).
 116  *
 117  * If there is already a security module registered with the kernel,
 118  * an error will be returned.  Otherwise %0 is returned on success.
 119  */
 120 int __init register_security(struct security_operations *ops)
 121 {
 122         if (verify(ops)) {
 123                 printk(KERN_DEBUG "%s could not verify "
 124                        "security_operations structure.\n", __func__);
 125                 return -EINVAL;
 126         }
 127
 128         if (security_ops != &default_security_ops)
 129                 return -EAGAIN;
 130
 131         security_ops = ops;
 132
 133         return 0;
 134 }
 135
 136 /* Security operations */
 137
 138 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 139 {
 140         return security_ops->ptrace_access_check(child, mode);
 141 }
 142
 143 int security_ptrace_traceme(struct task_struct *parent)
 144 {
 145         return security_ops->ptrace_traceme(parent);
 146 }
 147
 148 int security_capget(struct task_struct *target,
 149                      kernel_cap_t *effective,
 150                      kernel_cap_t *inheritable,
 151                      kernel_cap_t *permitted)
 152 {
 153         return security_ops->capget(target, effective, inheritable, permitted);
 154 }
 155
 156 int security_capset(struct cred *new, const struct cred *old,
 157                     const kernel_cap_t *effective,
 158                     const kernel_cap_t *inheritable,
 159                     const kernel_cap_t *permitted)
 160 {
 161         return security_ops->capset(new, old,
 162                                     effective, inheritable, permitted);
 163 }
 164
 165 int security_capable(int cap)
 166 {
 167         return security_ops->capable(current, current_cred(), cap,
 168                                      SECURITY_CAP_AUDIT);
 169 }
 170
 171 int security_real_capable(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_AUDIT);
 178         put_cred(cred);
 179         return ret;
 180 }
 181
 182 int security_real_capable_noaudit(struct task_struct *tsk, int cap)
 183 {
 184         const struct cred *cred;
 185         int ret;
 186
 187         cred = get_task_cred(tsk);
 188         ret = security_ops->capable(tsk, cred, cap, SECURITY_CAP_NOAUDIT);
 189         put_cred(cred);
 190         return ret;
 191 }
 192
 193 int security_sysctl(struct ctl_table *table, int op)
 194 {
 195         return security_ops->sysctl(table, op);
 196 }
 197
 198 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 199 {
 200         return security_ops->quotactl(cmds, type, id, sb);
 201 }
 202
 203 int security_quota_on(struct dentry *dentry)
 204 {
 205         return security_ops->quota_on(dentry);
 206 }
 207
 208 int security_syslog(int type, bool from_file)
 209 {
 210         return security_ops->syslog(type, from_file);
 211 }
 212
 213 int security_settime(struct timespec *ts, struct timezone *tz)
 214 {
 215         return security_ops->settime(ts, tz);
 216 }
 217
 218 int security_vm_enough_memory(long pages)
 219 {
 220         WARN_ON(current->mm == NULL);
 221         return security_ops->vm_enough_memory(current->mm, pages);
 222 }
 223
 224 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 225 {
 226         WARN_ON(mm == NULL);
 227         return security_ops->vm_enough_memory(mm, pages);
 228 }
 229
 230 int security_vm_enough_memory_kern(long pages)
 231 {
 232         /* If current->mm is a kernel thread then we will pass NULL,
 233            for this specific case that is fine */
 234         return security_ops->vm_enough_memory(current->mm, pages);
 235 }
 236
 237 int security_bprm_set_creds(struct linux_binprm *bprm)
 238 {
 239         return security_ops->bprm_set_creds(bprm);
 240 }
 241
 242 int security_bprm_check(struct linux_binprm *bprm)
 243 {
 244         int ret;
 245
 246         ret = security_ops->bprm_check_security(bprm);
 247         if (ret)
 248                 return ret;
 249         return ima_bprm_check(bprm);
 250 }
 251
 252 void security_bprm_committing_creds(struct linux_binprm *bprm)
 253 {
 254         security_ops->bprm_committing_creds(bprm);
 255 }
 256
 257 void security_bprm_committed_creds(struct linux_binprm *bprm)
 258 {
 259         security_ops->bprm_committed_creds(bprm);
 260 }
 261
 262 int security_bprm_secureexec(struct linux_binprm *bprm)
 263 {
 264         return security_ops->bprm_secureexec(bprm);
 265 }
 266
 267 int security_sb_alloc(struct super_block *sb)
 268 {
 269         return security_ops->sb_alloc_security(sb);
 270 }
 271
 272 void security_sb_free(struct super_block *sb)
 273 {
 274         security_ops->sb_free_security(sb);
 275 }
 276
 277 int security_sb_copy_data(char *orig, char *copy)
 278 {
 279         return security_ops->sb_copy_data(orig, copy);
 280 }
 281 EXPORT_SYMBOL(security_sb_copy_data);
 282
 283 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 284 {
 285         return security_ops->sb_kern_mount(sb, flags, data);
 286 }
 287
 288 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 289 {
 290         return security_ops->sb_show_options(m, sb);
 291 }
 292
 293 int security_sb_statfs(struct dentry *dentry)
 294 {
 295         return security_ops->sb_statfs(dentry);
 296 }
 297
 298 int security_sb_mount(char *dev_name, struct path *path,
 299                        char *type, unsigned long flags, void *data)
 300 {
 301         return security_ops->sb_mount(dev_name, path, type, flags, data);
 302 }
 303
 304 int security_sb_umount(struct vfsmount *mnt, int flags)
 305 {
 306         return security_ops->sb_umount(mnt, flags);
 307 }
 308
 309 int security_sb_pivotroot(struct path *old_path, struct path *new_path)
 310 {
 311         return security_ops->sb_pivotroot(old_path, new_path);
 312 }
 313
 314 int security_sb_set_mnt_opts(struct super_block *sb,
 315                                 struct security_mnt_opts *opts)
 316 {
 317         return security_ops->sb_set_mnt_opts(sb, opts);
 318 }
 319 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 320
 321 void security_sb_clone_mnt_opts(const struct super_block *oldsb,
 322                                 struct super_block *newsb)
 323 {
 324         security_ops->sb_clone_mnt_opts(oldsb, newsb);
 325 }
 326 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 327
 328 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 329 {
 330         return security_ops->sb_parse_opts_str(options, opts);
 331 }
 332 EXPORT_SYMBOL(security_sb_parse_opts_str);
 333
 334 int security_inode_alloc(struct inode *inode)
 335 {
 336         int ret;
 337
 338         inode->i_security = NULL;
 339         ret =  security_ops->inode_alloc_security(inode);
 340         if (ret)
 341                 return ret;
 342         ret = ima_inode_alloc(inode);
 343         if (ret)
 344                 security_inode_free(inode);
 345         return ret;
 346 }
 347
 348 void security_inode_free(struct inode *inode)
 349 {
 350         ima_inode_free(inode);
 351         security_ops->inode_free_security(inode);
 352 }
 353
 354 int security_inode_init_security(struct inode *inode, struct inode *dir,
 355                                   char **name, void **value, size_t *len)
 356 {
 357         if (unlikely(IS_PRIVATE(inode)))
 358                 return -EOPNOTSUPP;
 359         return security_ops->inode_init_security(inode, dir, name, value, len);
 360 }
 361 EXPORT_SYMBOL(security_inode_init_security);
 362
 363 #ifdef CONFIG_SECURITY_PATH
 364 int security_path_mknod(struct path *dir, struct dentry *dentry, int mode,
 365                         unsigned int dev)
 366 {
 367         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 368                 return 0;
 369         return security_ops->path_mknod(dir, dentry, mode, dev);
 370 }
 371 EXPORT_SYMBOL(security_path_mknod);
 372
 373 int security_path_mkdir(struct path *dir, struct dentry *dentry, int mode)
 374 {
 375         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 376                 return 0;
 377         return security_ops->path_mkdir(dir, dentry, mode);
 378 }
 379
 380 int security_path_rmdir(struct path *dir, struct dentry *dentry)
 381 {
 382         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 383                 return 0;
 384         return security_ops->path_rmdir(dir, dentry);
 385 }
 386
 387 int security_path_unlink(struct path *dir, struct dentry *dentry)
 388 {
 389         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 390                 return 0;
 391         return security_ops->path_unlink(dir, dentry);
 392 }
 393
 394 int security_path_symlink(struct path *dir, struct dentry *dentry,
 395                           const char *old_name)
 396 {
 397         if (unlikely(IS_PRIVATE(dir->dentry->d_inode)))
 398                 return 0;
 399         return security_ops->path_symlink(dir, dentry, old_name);
 400 }
 401
 402 int security_path_link(struct dentry *old_dentry, struct path *new_dir,
 403                        struct dentry *new_dentry)
 404 {
 405         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 406                 return 0;
 407         return security_ops->path_link(old_dentry, new_dir, new_dentry);
 408 }
 409
 410 int security_path_rename(struct path *old_dir, struct dentry *old_dentry,
 411                          struct path *new_dir, struct dentry *new_dentry)
 412 {
 413         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 414                      (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 415                 return 0;
 416         return security_ops->path_rename(old_dir, old_dentry, new_dir,
 417                                          new_dentry);
 418 }
 419
 420 int security_path_truncate(struct path *path, loff_t length,
 421                            unsigned int time_attrs)
 422 {
 423         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 424                 return 0;
 425         return security_ops->path_truncate(path, length, time_attrs);
 426 }
 427
 428 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
 429                         mode_t mode)
 430 {
 431         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 432                 return 0;
 433         return security_ops->path_chmod(dentry, mnt, mode);
 434 }
 435
 436 int security_path_chown(struct path *path, uid_t uid, gid_t gid)
 437 {
 438         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 439                 return 0;
 440         return security_ops->path_chown(path, uid, gid);
 441 }
 442
 443 int security_path_chroot(struct path *path)
 444 {
 445         return security_ops->path_chroot(path);
 446 }
 447 #endif
 448
 449 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
 450 {
 451         if (unlikely(IS_PRIVATE(dir)))
 452                 return 0;
 453         return security_ops->inode_create(dir, dentry, mode);
 454 }
 455 EXPORT_SYMBOL_GPL(security_inode_create);
 456
 457 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 458                          struct dentry *new_dentry)
 459 {
 460         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 461                 return 0;
 462         return security_ops->inode_link(old_dentry, dir, new_dentry);
 463 }
 464
 465 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 466 {
 467         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 468                 return 0;
 469         return security_ops->inode_unlink(dir, dentry);
 470 }
 471
 472 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 473                             const char *old_name)
 474 {
 475         if (unlikely(IS_PRIVATE(dir)))
 476                 return 0;
 477         return security_ops->inode_symlink(dir, dentry, old_name);
 478 }
 479
 480 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 481 {
 482         if (unlikely(IS_PRIVATE(dir)))
 483                 return 0;
 484         return security_ops->inode_mkdir(dir, dentry, mode);
 485 }
 486 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 487
 488 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 489 {
 490         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 491                 return 0;
 492         return security_ops->inode_rmdir(dir, dentry);
 493 }
 494
 495 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 496 {
 497         if (unlikely(IS_PRIVATE(dir)))
 498                 return 0;
 499         return security_ops->inode_mknod(dir, dentry, mode, dev);
 500 }
 501
 502 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 503                            struct inode *new_dir, struct dentry *new_dentry)
 504 {
 505         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 506             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 507                 return 0;
 508         return security_ops->inode_rename(old_dir, old_dentry,
 509                                            new_dir, new_dentry);
 510 }
 511
 512 int security_inode_readlink(struct dentry *dentry)
 513 {
 514         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 515                 return 0;
 516         return security_ops->inode_readlink(dentry);
 517 }
 518
 519 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 520 {
 521         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 522                 return 0;
 523         return security_ops->inode_follow_link(dentry, nd);
 524 }
 525
 526 int security_inode_permission(struct inode *inode, int mask)
 527 {
 528         if (unlikely(IS_PRIVATE(inode)))
 529                 return 0;
 530         return security_ops->inode_permission(inode, mask);
 531 }
 532
 533 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 534 {
 535         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 536                 return 0;
 537         return security_ops->inode_setattr(dentry, attr);
 538 }
 539 EXPORT_SYMBOL_GPL(security_inode_setattr);
 540
 541 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 542 {
 543         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 544                 return 0;
 545         return security_ops->inode_getattr(mnt, dentry);
 546 }
 547
 548 int security_inode_setxattr(struct dentry *dentry, const char *name,
 549                             const void *value, size_t size, int flags)
 550 {
 551         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 552                 return 0;
 553         return security_ops->inode_setxattr(dentry, name, value, size, flags);
 554 }
 555
 556 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 557                                   const void *value, size_t size, int flags)
 558 {
 559         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 560                 return;
 561         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 562 }
 563
 564 int security_inode_getxattr(struct dentry *dentry, const char *name)
 565 {
 566         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 567                 return 0;
 568         return security_ops->inode_getxattr(dentry, name);
 569 }
 570
 571 int security_inode_listxattr(struct dentry *dentry)
 572 {
 573         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 574                 return 0;
 575         return security_ops->inode_listxattr(dentry);
 576 }
 577
 578 int security_inode_removexattr(struct dentry *dentry, const char *name)
 579 {
 580         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 581                 return 0;
 582         return security_ops->inode_removexattr(dentry, name);
 583 }
 584
 585 int security_inode_need_killpriv(struct dentry *dentry)
 586 {
 587         return security_ops->inode_need_killpriv(dentry);
 588 }
 589
 590 int security_inode_killpriv(struct dentry *dentry)
 591 {
 592         return security_ops->inode_killpriv(dentry);
 593 }
 594
 595 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 596 {
 597         if (unlikely(IS_PRIVATE(inode)))
 598                 return -EOPNOTSUPP;
 599         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 600 }
 601
 602 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 603 {
 604         if (unlikely(IS_PRIVATE(inode)))
 605                 return -EOPNOTSUPP;
 606         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 607 }
 608
 609 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 610 {
 611         if (unlikely(IS_PRIVATE(inode)))
 612                 return 0;
 613         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 614 }
 615
 616 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 617 {
 618         security_ops->inode_getsecid(inode, secid);
 619 }
 620
 621 int security_file_permission(struct file *file, int mask)
 622 {
 623         return security_ops->file_permission(file, mask);
 624 }
 625
 626 int security_file_alloc(struct file *file)
 627 {
 628         return security_ops->file_alloc_security(file);
 629 }
 630
 631 void security_file_free(struct file *file)
 632 {
 633         security_ops->file_free_security(file);
 634 }
 635
 636 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 637 {
 638         return security_ops->file_ioctl(file, cmd, arg);
 639 }
 640
 641 int security_file_mmap(struct file *file, unsigned long reqprot,
 642                         unsigned long prot, unsigned long flags,
 643                         unsigned long addr, unsigned long addr_only)
 644 {
 645         int ret;
 646
 647         ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 648         if (ret)
 649                 return ret;
 650         return ima_file_mmap(file, prot);
 651 }
 652
 653 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 654                             unsigned long prot)
 655 {
 656         return security_ops->file_mprotect(vma, reqprot, prot);
 657 }
 658
 659 int security_file_lock(struct file *file, unsigned int cmd)
 660 {
 661         return security_ops->file_lock(file, cmd);
 662 }
 663
 664 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 665 {
 666         return security_ops->file_fcntl(file, cmd, arg);
 667 }
 668
 669 int security_file_set_fowner(struct file *file)
 670 {
 671         return security_ops->file_set_fowner(file);
 672 }
 673
 674 int security_file_send_sigiotask(struct task_struct *tsk,
 675                                   struct fown_struct *fown, int sig)
 676 {
 677         return security_ops->file_send_sigiotask(tsk, fown, sig);
 678 }
 679
 680 int security_file_receive(struct file *file)
 681 {
 682         return security_ops->file_receive(file);
 683 }
 684
 685 int security_dentry_open(struct file *file, const struct cred *cred)
 686 {
 687         return security_ops->dentry_open(file, cred);
 688 }
 689
 690 int security_task_create(unsigned long clone_flags)
 691 {
 692         return security_ops->task_create(clone_flags);
 693 }
 694
 695 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 696 {
 697         return security_ops->cred_alloc_blank(cred, gfp);
 698 }
 699
 700 void security_cred_free(struct cred *cred)
 701 {
 702         security_ops->cred_free(cred);
 703 }
 704
 705 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 706 {
 707         return security_ops->cred_prepare(new, old, gfp);
 708 }
 709
 710 void security_transfer_creds(struct cred *new, const struct cred *old)
 711 {
 712         security_ops->cred_transfer(new, old);
 713 }
 714
 715 int security_kernel_act_as(struct cred *new, u32 secid)
 716 {
 717         return security_ops->kernel_act_as(new, secid);
 718 }
 719
 720 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 721 {
 722         return security_ops->kernel_create_files_as(new, inode);
 723 }
 724
 725 int security_kernel_module_request(char *kmod_name)
 726 {
 727         return security_ops->kernel_module_request(kmod_name);
 728 }
 729
 730 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 731                              int flags)
 732 {
 733         return security_ops->task_fix_setuid(new, old, flags);
 734 }
 735
 736 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 737 {
 738         return security_ops->task_setpgid(p, pgid);
 739 }
 740
 741 int security_task_getpgid(struct task_struct *p)
 742 {
 743         return security_ops->task_getpgid(p);
 744 }
 745
 746 int security_task_getsid(struct task_struct *p)
 747 {
 748         return security_ops->task_getsid(p);
 749 }
 750
 751 void security_task_getsecid(struct task_struct *p, u32 *secid)
 752 {
 753         security_ops->task_getsecid(p, secid);
 754 }
 755 EXPORT_SYMBOL(security_task_getsecid);
 756
 757 int security_task_setnice(struct task_struct *p, int nice)
 758 {
 759         return security_ops->task_setnice(p, nice);
 760 }
 761
 762 int security_task_setioprio(struct task_struct *p, int ioprio)
 763 {
 764         return security_ops->task_setioprio(p, ioprio);
 765 }
 766
 767 int security_task_getioprio(struct task_struct *p)
 768 {
 769         return security_ops->task_getioprio(p);
 770 }
 771
 772 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim)
 773 {
 774         return security_ops->task_setrlimit(resource, new_rlim);
 775 }
 776
 777 int security_task_setscheduler(struct task_struct *p,
 778                                 int policy, struct sched_param *lp)
 779 {
 780         return security_ops->task_setscheduler(p, policy, lp);
 781 }
 782
 783 int security_task_getscheduler(struct task_struct *p)
 784 {
 785         return security_ops->task_getscheduler(p);
 786 }
 787
 788 int security_task_movememory(struct task_struct *p)
 789 {
 790         return security_ops->task_movememory(p);
 791 }
 792
 793 int security_task_kill(struct task_struct *p, struct siginfo *info,
 794                         int sig, u32 secid)
 795 {
 796         return security_ops->task_kill(p, info, sig, secid);
 797 }
 798
 799 int security_task_wait(struct task_struct *p)
 800 {
 801         return security_ops->task_wait(p);
 802 }
 803
 804 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 805                          unsigned long arg4, unsigned long arg5)
 806 {
 807         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 808 }
 809
 810 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 811 {
 812         security_ops->task_to_inode(p, inode);
 813 }
 814
 815 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 816 {
 817         return security_ops->ipc_permission(ipcp, flag);
 818 }
 819
 820 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 821 {
 822         security_ops->ipc_getsecid(ipcp, secid);
 823 }
 824
 825 int security_msg_msg_alloc(struct msg_msg *msg)
 826 {
 827         return security_ops->msg_msg_alloc_security(msg);
 828 }
 829
 830 void security_msg_msg_free(struct msg_msg *msg)
 831 {
 832         security_ops->msg_msg_free_security(msg);
 833 }
 834
 835 int security_msg_queue_alloc(struct msg_queue *msq)
 836 {
 837         return security_ops->msg_queue_alloc_security(msq);
 838 }
 839
 840 void security_msg_queue_free(struct msg_queue *msq)
 841 {
 842         security_ops->msg_queue_free_security(msq);
 843 }
 844
 845 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 846 {
 847         return security_ops->msg_queue_associate(msq, msqflg);
 848 }
 849
 850 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 851 {
 852         return security_ops->msg_queue_msgctl(msq, cmd);
 853 }
 854
 855 int security_msg_queue_msgsnd(struct msg_queue *msq,
 856                                struct msg_msg *msg, int msqflg)
 857 {
 858         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 859 }
 860
 861 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 862                                struct task_struct *target, long type, int mode)
 863 {
 864         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 865 }
 866
 867 int security_shm_alloc(struct shmid_kernel *shp)
 868 {
 869         return security_ops->shm_alloc_security(shp);
 870 }
 871
 872 void security_shm_free(struct shmid_kernel *shp)
 873 {
 874         security_ops->shm_free_security(shp);
 875 }
 876
 877 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 878 {
 879         return security_ops->shm_associate(shp, shmflg);
 880 }
 881
 882 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 883 {
 884         return security_ops->shm_shmctl(shp, cmd);
 885 }
 886
 887 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 888 {
 889         return security_ops->shm_shmat(shp, shmaddr, shmflg);
 890 }
 891
 892 int security_sem_alloc(struct sem_array *sma)
 893 {
 894         return security_ops->sem_alloc_security(sma);
 895 }
 896
 897 void security_sem_free(struct sem_array *sma)
 898 {
 899         security_ops->sem_free_security(sma);
 900 }
 901
 902 int security_sem_associate(struct sem_array *sma, int semflg)
 903 {
 904         return security_ops->sem_associate(sma, semflg);
 905 }
 906
 907 int security_sem_semctl(struct sem_array *sma, int cmd)
 908 {
 909         return security_ops->sem_semctl(sma, cmd);
 910 }
 911
 912 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 913                         unsigned nsops, int alter)
 914 {
 915         return security_ops->sem_semop(sma, sops, nsops, alter);
 916 }
 917
 918 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 919 {
 920         if (unlikely(inode && IS_PRIVATE(inode)))
 921                 return;
 922         security_ops->d_instantiate(dentry, inode);
 923 }
 924 EXPORT_SYMBOL(security_d_instantiate);
 925
 926 int security_getprocattr(struct task_struct *p, char *name, char **value)
 927 {
 928         return security_ops->getprocattr(p, name, value);
 929 }
 930
 931 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 932 {
 933         return security_ops->setprocattr(p, name, value, size);
 934 }
 935
 936 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
 937 {
 938         return security_ops->netlink_send(sk, skb);
 939 }
 940
 941 int security_netlink_recv(struct sk_buff *skb, int cap)
 942 {
 943         return security_ops->netlink_recv(skb, cap);
 944 }
 945 EXPORT_SYMBOL(security_netlink_recv);
 946
 947 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
 948 {
 949         return security_ops->secid_to_secctx(secid, secdata, seclen);
 950 }
 951 EXPORT_SYMBOL(security_secid_to_secctx);
 952
 953 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 954 {
 955         return security_ops->secctx_to_secid(secdata, seclen, secid);
 956 }
 957 EXPORT_SYMBOL(security_secctx_to_secid);
 958
 959 void security_release_secctx(char *secdata, u32 seclen)
 960 {
 961         security_ops->release_secctx(secdata, seclen);
 962 }
 963 EXPORT_SYMBOL(security_release_secctx);
 964
 965 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
 966 {
 967         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
 968 }
 969 EXPORT_SYMBOL(security_inode_notifysecctx);
 970
 971 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
 972 {
 973         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
 974 }
 975 EXPORT_SYMBOL(security_inode_setsecctx);
 976
 977 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
 978 {
 979         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
 980 }
 981 EXPORT_SYMBOL(security_inode_getsecctx);
 982
 983 #ifdef CONFIG_SECURITY_NETWORK
 984
 985 int security_unix_stream_connect(struct socket *sock, struct socket *other,
 986                                  struct sock *newsk)
 987 {
 988         return security_ops->unix_stream_connect(sock, other, newsk);
 989 }
 990 EXPORT_SYMBOL(security_unix_stream_connect);
 991
 992 int security_unix_may_send(struct socket *sock,  struct socket *other)
 993 {
 994         return security_ops->unix_may_send(sock, other);
 995 }
 996 EXPORT_SYMBOL(security_unix_may_send);
 997
 998 int security_socket_create(int family, int type, int protocol, int kern)
 999 {
1000         return security_ops->socket_create(family, type, protocol, kern);
1001 }
1002
1003 int security_socket_post_create(struct socket *sock, int family,
1004                                 int type, int protocol, int kern)
1005 {
1006         return security_ops->socket_post_create(sock, family, type,
1007                                                 protocol, kern);
1008 }
1009
1010 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1011 {
1012         return security_ops->socket_bind(sock, address, addrlen);
1013 }
1014
1015 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1016 {
1017         return security_ops->socket_connect(sock, address, addrlen);
1018 }
1019
1020 int security_socket_listen(struct socket *sock, int backlog)
1021 {
1022         return security_ops->socket_listen(sock, backlog);
1023 }
1024
1025 int security_socket_accept(struct socket *sock, struct socket *newsock)
1026 {
1027         return security_ops->socket_accept(sock, newsock);
1028 }
1029
1030 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1031 {
1032         return security_ops->socket_sendmsg(sock, msg, size);
1033 }
1034
1035 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1036                             int size, int flags)
1037 {
1038         return security_ops->socket_recvmsg(sock, msg, size, flags);
1039 }
1040
1041 int security_socket_getsockname(struct socket *sock)
1042 {
1043         return security_ops->socket_getsockname(sock);
1044 }
1045
1046 int security_socket_getpeername(struct socket *sock)
1047 {
1048         return security_ops->socket_getpeername(sock);
1049 }
1050
1051 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1052 {
1053         return security_ops->socket_getsockopt(sock, level, optname);
1054 }
1055
1056 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1057 {
1058         return security_ops->socket_setsockopt(sock, level, optname);
1059 }
1060
1061 int security_socket_shutdown(struct socket *sock, int how)
1062 {
1063         return security_ops->socket_shutdown(sock, how);
1064 }
1065
1066 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1067 {
1068         return security_ops->socket_sock_rcv_skb(sk, skb);
1069 }
1070 EXPORT_SYMBOL(security_sock_rcv_skb);
1071
1072 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1073                                       int __user *optlen, unsigned len)
1074 {
1075         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1076 }
1077
1078 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1079 {
1080         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1081 }
1082 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1083
1084 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1085 {
1086         return security_ops->sk_alloc_security(sk, family, priority);
1087 }
1088
1089 void security_sk_free(struct sock *sk)
1090 {
1091         security_ops->sk_free_security(sk);
1092 }
1093
1094 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1095 {
1096         security_ops->sk_clone_security(sk, newsk);
1097 }
1098
1099 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1100 {
1101         security_ops->sk_getsecid(sk, &fl->secid);
1102 }
1103 EXPORT_SYMBOL(security_sk_classify_flow);
1104
1105 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1106 {
1107         security_ops->req_classify_flow(req, fl);
1108 }
1109 EXPORT_SYMBOL(security_req_classify_flow);
1110
1111 void security_sock_graft(struct sock *sk, struct socket *parent)
1112 {
1113         security_ops->sock_graft(sk, parent);
1114 }
1115 EXPORT_SYMBOL(security_sock_graft);
1116
1117 int security_inet_conn_request(struct sock *sk,
1118                         struct sk_buff *skb, struct request_sock *req)
1119 {
1120         return security_ops->inet_conn_request(sk, skb, req);
1121 }
1122 EXPORT_SYMBOL(security_inet_conn_request);
1123
1124 void security_inet_csk_clone(struct sock *newsk,
1125                         const struct request_sock *req)
1126 {
1127         security_ops->inet_csk_clone(newsk, req);
1128 }
1129
1130 void security_inet_conn_established(struct sock *sk,
1131                         struct sk_buff *skb)
1132 {
1133         security_ops->inet_conn_established(sk, skb);
1134 }
1135
1136 int security_tun_dev_create(void)
1137 {
1138         return security_ops->tun_dev_create();
1139 }
1140 EXPORT_SYMBOL(security_tun_dev_create);
1141
1142 void security_tun_dev_post_create(struct sock *sk)
1143 {
1144         return security_ops->tun_dev_post_create(sk);
1145 }
1146 EXPORT_SYMBOL(security_tun_dev_post_create);
1147
1148 int security_tun_dev_attach(struct sock *sk)
1149 {
1150         return security_ops->tun_dev_attach(sk);
1151 }
1152 EXPORT_SYMBOL(security_tun_dev_attach);
1153
1154 #endif  /* CONFIG_SECURITY_NETWORK */
1155
1156 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1157
1158 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1159 {
1160         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1161 }
1162 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1163
1164 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1165                               struct xfrm_sec_ctx **new_ctxp)
1166 {
1167         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1168 }
1169
1170 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1171 {
1172         security_ops->xfrm_policy_free_security(ctx);
1173 }
1174 EXPORT_SYMBOL(security_xfrm_policy_free);
1175
1176 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1177 {
1178         return security_ops->xfrm_policy_delete_security(ctx);
1179 }
1180
1181 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1182 {
1183         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1184 }
1185 EXPORT_SYMBOL(security_xfrm_state_alloc);
1186
1187 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1188                                       struct xfrm_sec_ctx *polsec, u32 secid)
1189 {
1190         if (!polsec)
1191                 return 0;
1192         /*
1193          * We want the context to be taken from secid which is usually
1194          * from the sock.
1195          */
1196         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1197 }
1198
1199 int security_xfrm_state_delete(struct xfrm_state *x)
1200 {
1201         return security_ops->xfrm_state_delete_security(x);
1202 }
1203 EXPORT_SYMBOL(security_xfrm_state_delete);
1204
1205 void security_xfrm_state_free(struct xfrm_state *x)
1206 {
1207         security_ops->xfrm_state_free_security(x);
1208 }
1209
1210 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1211 {
1212         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1213 }
1214
1215 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1216                                        struct xfrm_policy *xp, struct flowi *fl)
1217 {
1218         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1219 }
1220
1221 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1222 {
1223         return security_ops->xfrm_decode_session(skb, secid, 1);
1224 }
1225
1226 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1227 {
1228         int rc = security_ops->xfrm_decode_session(skb, &fl->secid, 0);
1229
1230         BUG_ON(rc);
1231 }
1232 EXPORT_SYMBOL(security_skb_classify_flow);
1233
1234 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1235
1236 #ifdef CONFIG_KEYS
1237
1238 int security_key_alloc(struct key *key, const struct cred *cred,
1239                        unsigned long flags)
1240 {
1241         return security_ops->key_alloc(key, cred, flags);
1242 }
1243
1244 void security_key_free(struct key *key)
1245 {
1246         security_ops->key_free(key);
1247 }
1248
1249 int security_key_permission(key_ref_t key_ref,
1250                             const struct cred *cred, key_perm_t perm)
1251 {
1252         return security_ops->key_permission(key_ref, cred, perm);
1253 }
1254
1255 int security_key_getsecurity(struct key *key, char **_buffer)
1256 {
1257         return security_ops->key_getsecurity(key, _buffer);
1258 }
1259
1260 #endif  /* CONFIG_KEYS */
1261
1262 #ifdef CONFIG_AUDIT
1263
1264 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1265 {
1266         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1267 }
1268
1269 int security_audit_rule_known(struct audit_krule *krule)
1270 {
1271         return security_ops->audit_rule_known(krule);
1272 }
1273
1274 void security_audit_rule_free(void *lsmrule)
1275 {
1276         security_ops->audit_rule_free(lsmrule);
1277 }
1278
1279 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1280                               struct audit_context *actx)
1281 {
1282         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1283 }
1284
1285 #endif /* CONFIG_AUDIT */