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)
 421 {
 422         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 423                 return 0;
 424         return security_ops->path_truncate(path);
 425 }
 426
 427 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt,
 428                         mode_t mode)
 429 {
 430         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 431                 return 0;
 432         return security_ops->path_chmod(dentry, mnt, mode);
 433 }
 434
 435 int security_path_chown(struct path *path, uid_t uid, gid_t gid)
 436 {
 437         if (unlikely(IS_PRIVATE(path->dentry->d_inode)))
 438                 return 0;
 439         return security_ops->path_chown(path, uid, gid);
 440 }
 441
 442 int security_path_chroot(struct path *path)
 443 {
 444         return security_ops->path_chroot(path);
 445 }
 446 #endif
 447
 448 int security_inode_create(struct inode *dir, struct dentry *dentry, int mode)
 449 {
 450         if (unlikely(IS_PRIVATE(dir)))
 451                 return 0;
 452         return security_ops->inode_create(dir, dentry, mode);
 453 }
 454 EXPORT_SYMBOL_GPL(security_inode_create);
 455
 456 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 457                          struct dentry *new_dentry)
 458 {
 459         if (unlikely(IS_PRIVATE(old_dentry->d_inode)))
 460                 return 0;
 461         return security_ops->inode_link(old_dentry, dir, new_dentry);
 462 }
 463
 464 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 465 {
 466         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 467                 return 0;
 468         return security_ops->inode_unlink(dir, dentry);
 469 }
 470
 471 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 472                             const char *old_name)
 473 {
 474         if (unlikely(IS_PRIVATE(dir)))
 475                 return 0;
 476         return security_ops->inode_symlink(dir, dentry, old_name);
 477 }
 478
 479 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, int mode)
 480 {
 481         if (unlikely(IS_PRIVATE(dir)))
 482                 return 0;
 483         return security_ops->inode_mkdir(dir, dentry, mode);
 484 }
 485 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 486
 487 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 488 {
 489         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 490                 return 0;
 491         return security_ops->inode_rmdir(dir, dentry);
 492 }
 493
 494 int security_inode_mknod(struct inode *dir, struct dentry *dentry, int mode, dev_t dev)
 495 {
 496         if (unlikely(IS_PRIVATE(dir)))
 497                 return 0;
 498         return security_ops->inode_mknod(dir, dentry, mode, dev);
 499 }
 500
 501 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 502                            struct inode *new_dir, struct dentry *new_dentry)
 503 {
 504         if (unlikely(IS_PRIVATE(old_dentry->d_inode) ||
 505             (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode))))
 506                 return 0;
 507         return security_ops->inode_rename(old_dir, old_dentry,
 508                                            new_dir, new_dentry);
 509 }
 510
 511 int security_inode_readlink(struct dentry *dentry)
 512 {
 513         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 514                 return 0;
 515         return security_ops->inode_readlink(dentry);
 516 }
 517
 518 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd)
 519 {
 520         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 521                 return 0;
 522         return security_ops->inode_follow_link(dentry, nd);
 523 }
 524
 525 int security_inode_permission(struct inode *inode, int mask)
 526 {
 527         if (unlikely(IS_PRIVATE(inode)))
 528                 return 0;
 529         return security_ops->inode_permission(inode, mask);
 530 }
 531
 532 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 533 {
 534         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 535                 return 0;
 536         return security_ops->inode_setattr(dentry, attr);
 537 }
 538 EXPORT_SYMBOL_GPL(security_inode_setattr);
 539
 540 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry)
 541 {
 542         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 543                 return 0;
 544         return security_ops->inode_getattr(mnt, dentry);
 545 }
 546
 547 int security_inode_setxattr(struct dentry *dentry, const char *name,
 548                             const void *value, size_t size, int flags)
 549 {
 550         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 551                 return 0;
 552         return security_ops->inode_setxattr(dentry, name, value, size, flags);
 553 }
 554
 555 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 556                                   const void *value, size_t size, int flags)
 557 {
 558         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 559                 return;
 560         security_ops->inode_post_setxattr(dentry, name, value, size, flags);
 561 }
 562
 563 int security_inode_getxattr(struct dentry *dentry, const char *name)
 564 {
 565         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 566                 return 0;
 567         return security_ops->inode_getxattr(dentry, name);
 568 }
 569
 570 int security_inode_listxattr(struct dentry *dentry)
 571 {
 572         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 573                 return 0;
 574         return security_ops->inode_listxattr(dentry);
 575 }
 576
 577 int security_inode_removexattr(struct dentry *dentry, const char *name)
 578 {
 579         if (unlikely(IS_PRIVATE(dentry->d_inode)))
 580                 return 0;
 581         return security_ops->inode_removexattr(dentry, name);
 582 }
 583
 584 int security_inode_need_killpriv(struct dentry *dentry)
 585 {
 586         return security_ops->inode_need_killpriv(dentry);
 587 }
 588
 589 int security_inode_killpriv(struct dentry *dentry)
 590 {
 591         return security_ops->inode_killpriv(dentry);
 592 }
 593
 594 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc)
 595 {
 596         if (unlikely(IS_PRIVATE(inode)))
 597                 return -EOPNOTSUPP;
 598         return security_ops->inode_getsecurity(inode, name, buffer, alloc);
 599 }
 600
 601 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 602 {
 603         if (unlikely(IS_PRIVATE(inode)))
 604                 return -EOPNOTSUPP;
 605         return security_ops->inode_setsecurity(inode, name, value, size, flags);
 606 }
 607
 608 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 609 {
 610         if (unlikely(IS_PRIVATE(inode)))
 611                 return 0;
 612         return security_ops->inode_listsecurity(inode, buffer, buffer_size);
 613 }
 614
 615 void security_inode_getsecid(const struct inode *inode, u32 *secid)
 616 {
 617         security_ops->inode_getsecid(inode, secid);
 618 }
 619
 620 int security_file_permission(struct file *file, int mask)
 621 {
 622         int ret;
 623
 624         ret = security_ops->file_permission(file, mask);
 625         if (ret)
 626                 return ret;
 627
 628         return fsnotify_perm(file, mask);
 629 }
 630
 631 int security_file_alloc(struct file *file)
 632 {
 633         return security_ops->file_alloc_security(file);
 634 }
 635
 636 void security_file_free(struct file *file)
 637 {
 638         security_ops->file_free_security(file);
 639 }
 640
 641 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 642 {
 643         return security_ops->file_ioctl(file, cmd, arg);
 644 }
 645
 646 int security_file_mmap(struct file *file, unsigned long reqprot,
 647                         unsigned long prot, unsigned long flags,
 648                         unsigned long addr, unsigned long addr_only)
 649 {
 650         int ret;
 651
 652         ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only);
 653         if (ret)
 654                 return ret;
 655         return ima_file_mmap(file, prot);
 656 }
 657
 658 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 659                             unsigned long prot)
 660 {
 661         return security_ops->file_mprotect(vma, reqprot, prot);
 662 }
 663
 664 int security_file_lock(struct file *file, unsigned int cmd)
 665 {
 666         return security_ops->file_lock(file, cmd);
 667 }
 668
 669 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 670 {
 671         return security_ops->file_fcntl(file, cmd, arg);
 672 }
 673
 674 int security_file_set_fowner(struct file *file)
 675 {
 676         return security_ops->file_set_fowner(file);
 677 }
 678
 679 int security_file_send_sigiotask(struct task_struct *tsk,
 680                                   struct fown_struct *fown, int sig)
 681 {
 682         return security_ops->file_send_sigiotask(tsk, fown, sig);
 683 }
 684
 685 int security_file_receive(struct file *file)
 686 {
 687         return security_ops->file_receive(file);
 688 }
 689
 690 int security_dentry_open(struct file *file, const struct cred *cred)
 691 {
 692         int ret;
 693
 694         ret = security_ops->dentry_open(file, cred);
 695         if (ret)
 696                 return ret;
 697
 698         return fsnotify_perm(file, MAY_OPEN);
 699 }
 700
 701 int security_task_create(unsigned long clone_flags)
 702 {
 703         return security_ops->task_create(clone_flags);
 704 }
 705
 706 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 707 {
 708         return security_ops->cred_alloc_blank(cred, gfp);
 709 }
 710
 711 void security_cred_free(struct cred *cred)
 712 {
 713         security_ops->cred_free(cred);
 714 }
 715
 716 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 717 {
 718         return security_ops->cred_prepare(new, old, gfp);
 719 }
 720
 721 void security_transfer_creds(struct cred *new, const struct cred *old)
 722 {
 723         security_ops->cred_transfer(new, old);
 724 }
 725
 726 int security_kernel_act_as(struct cred *new, u32 secid)
 727 {
 728         return security_ops->kernel_act_as(new, secid);
 729 }
 730
 731 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 732 {
 733         return security_ops->kernel_create_files_as(new, inode);
 734 }
 735
 736 int security_kernel_module_request(char *kmod_name)
 737 {
 738         return security_ops->kernel_module_request(kmod_name);
 739 }
 740
 741 int security_task_fix_setuid(struct cred *new, const struct cred *old,
 742                              int flags)
 743 {
 744         return security_ops->task_fix_setuid(new, old, flags);
 745 }
 746
 747 int security_task_setpgid(struct task_struct *p, pid_t pgid)
 748 {
 749         return security_ops->task_setpgid(p, pgid);
 750 }
 751
 752 int security_task_getpgid(struct task_struct *p)
 753 {
 754         return security_ops->task_getpgid(p);
 755 }
 756
 757 int security_task_getsid(struct task_struct *p)
 758 {
 759         return security_ops->task_getsid(p);
 760 }
 761
 762 void security_task_getsecid(struct task_struct *p, u32 *secid)
 763 {
 764         security_ops->task_getsecid(p, secid);
 765 }
 766 EXPORT_SYMBOL(security_task_getsecid);
 767
 768 int security_task_setnice(struct task_struct *p, int nice)
 769 {
 770         return security_ops->task_setnice(p, nice);
 771 }
 772
 773 int security_task_setioprio(struct task_struct *p, int ioprio)
 774 {
 775         return security_ops->task_setioprio(p, ioprio);
 776 }
 777
 778 int security_task_getioprio(struct task_struct *p)
 779 {
 780         return security_ops->task_getioprio(p);
 781 }
 782
 783 int security_task_setrlimit(unsigned int resource, struct rlimit *new_rlim)
 784 {
 785         return security_ops->task_setrlimit(resource, new_rlim);
 786 }
 787
 788 int security_task_setscheduler(struct task_struct *p,
 789                                 int policy, struct sched_param *lp)
 790 {
 791         return security_ops->task_setscheduler(p, policy, lp);
 792 }
 793
 794 int security_task_getscheduler(struct task_struct *p)
 795 {
 796         return security_ops->task_getscheduler(p);
 797 }
 798
 799 int security_task_movememory(struct task_struct *p)
 800 {
 801         return security_ops->task_movememory(p);
 802 }
 803
 804 int security_task_kill(struct task_struct *p, struct siginfo *info,
 805                         int sig, u32 secid)
 806 {
 807         return security_ops->task_kill(p, info, sig, secid);
 808 }
 809
 810 int security_task_wait(struct task_struct *p)
 811 {
 812         return security_ops->task_wait(p);
 813 }
 814
 815 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
 816                          unsigned long arg4, unsigned long arg5)
 817 {
 818         return security_ops->task_prctl(option, arg2, arg3, arg4, arg5);
 819 }
 820
 821 void security_task_to_inode(struct task_struct *p, struct inode *inode)
 822 {
 823         security_ops->task_to_inode(p, inode);
 824 }
 825
 826 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
 827 {
 828         return security_ops->ipc_permission(ipcp, flag);
 829 }
 830
 831 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
 832 {
 833         security_ops->ipc_getsecid(ipcp, secid);
 834 }
 835
 836 int security_msg_msg_alloc(struct msg_msg *msg)
 837 {
 838         return security_ops->msg_msg_alloc_security(msg);
 839 }
 840
 841 void security_msg_msg_free(struct msg_msg *msg)
 842 {
 843         security_ops->msg_msg_free_security(msg);
 844 }
 845
 846 int security_msg_queue_alloc(struct msg_queue *msq)
 847 {
 848         return security_ops->msg_queue_alloc_security(msq);
 849 }
 850
 851 void security_msg_queue_free(struct msg_queue *msq)
 852 {
 853         security_ops->msg_queue_free_security(msq);
 854 }
 855
 856 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
 857 {
 858         return security_ops->msg_queue_associate(msq, msqflg);
 859 }
 860
 861 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
 862 {
 863         return security_ops->msg_queue_msgctl(msq, cmd);
 864 }
 865
 866 int security_msg_queue_msgsnd(struct msg_queue *msq,
 867                                struct msg_msg *msg, int msqflg)
 868 {
 869         return security_ops->msg_queue_msgsnd(msq, msg, msqflg);
 870 }
 871
 872 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
 873                                struct task_struct *target, long type, int mode)
 874 {
 875         return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode);
 876 }
 877
 878 int security_shm_alloc(struct shmid_kernel *shp)
 879 {
 880         return security_ops->shm_alloc_security(shp);
 881 }
 882
 883 void security_shm_free(struct shmid_kernel *shp)
 884 {
 885         security_ops->shm_free_security(shp);
 886 }
 887
 888 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
 889 {
 890         return security_ops->shm_associate(shp, shmflg);
 891 }
 892
 893 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
 894 {
 895         return security_ops->shm_shmctl(shp, cmd);
 896 }
 897
 898 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
 899 {
 900         return security_ops->shm_shmat(shp, shmaddr, shmflg);
 901 }
 902
 903 int security_sem_alloc(struct sem_array *sma)
 904 {
 905         return security_ops->sem_alloc_security(sma);
 906 }
 907
 908 void security_sem_free(struct sem_array *sma)
 909 {
 910         security_ops->sem_free_security(sma);
 911 }
 912
 913 int security_sem_associate(struct sem_array *sma, int semflg)
 914 {
 915         return security_ops->sem_associate(sma, semflg);
 916 }
 917
 918 int security_sem_semctl(struct sem_array *sma, int cmd)
 919 {
 920         return security_ops->sem_semctl(sma, cmd);
 921 }
 922
 923 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
 924                         unsigned nsops, int alter)
 925 {
 926         return security_ops->sem_semop(sma, sops, nsops, alter);
 927 }
 928
 929 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
 930 {
 931         if (unlikely(inode && IS_PRIVATE(inode)))
 932                 return;
 933         security_ops->d_instantiate(dentry, inode);
 934 }
 935 EXPORT_SYMBOL(security_d_instantiate);
 936
 937 int security_getprocattr(struct task_struct *p, char *name, char **value)
 938 {
 939         return security_ops->getprocattr(p, name, value);
 940 }
 941
 942 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size)
 943 {
 944         return security_ops->setprocattr(p, name, value, size);
 945 }
 946
 947 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
 948 {
 949         return security_ops->netlink_send(sk, skb);
 950 }
 951
 952 int security_netlink_recv(struct sk_buff *skb, int cap)
 953 {
 954         return security_ops->netlink_recv(skb, cap);
 955 }
 956 EXPORT_SYMBOL(security_netlink_recv);
 957
 958 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
 959 {
 960         return security_ops->secid_to_secctx(secid, secdata, seclen);
 961 }
 962 EXPORT_SYMBOL(security_secid_to_secctx);
 963
 964 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
 965 {
 966         return security_ops->secctx_to_secid(secdata, seclen, secid);
 967 }
 968 EXPORT_SYMBOL(security_secctx_to_secid);
 969
 970 void security_release_secctx(char *secdata, u32 seclen)
 971 {
 972         security_ops->release_secctx(secdata, seclen);
 973 }
 974 EXPORT_SYMBOL(security_release_secctx);
 975
 976 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
 977 {
 978         return security_ops->inode_notifysecctx(inode, ctx, ctxlen);
 979 }
 980 EXPORT_SYMBOL(security_inode_notifysecctx);
 981
 982 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
 983 {
 984         return security_ops->inode_setsecctx(dentry, ctx, ctxlen);
 985 }
 986 EXPORT_SYMBOL(security_inode_setsecctx);
 987
 988 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
 989 {
 990         return security_ops->inode_getsecctx(inode, ctx, ctxlen);
 991 }
 992 EXPORT_SYMBOL(security_inode_getsecctx);
 993
 994 #ifdef CONFIG_SECURITY_NETWORK
 995
 996 int security_unix_stream_connect(struct socket *sock, struct socket *other,
 997                                  struct sock *newsk)
 998 {
 999         return security_ops->unix_stream_connect(sock, other, newsk);
1000 }
1001 EXPORT_SYMBOL(security_unix_stream_connect);
1002
1003 int security_unix_may_send(struct socket *sock,  struct socket *other)
1004 {
1005         return security_ops->unix_may_send(sock, other);
1006 }
1007 EXPORT_SYMBOL(security_unix_may_send);
1008
1009 int security_socket_create(int family, int type, int protocol, int kern)
1010 {
1011         return security_ops->socket_create(family, type, protocol, kern);
1012 }
1013
1014 int security_socket_post_create(struct socket *sock, int family,
1015                                 int type, int protocol, int kern)
1016 {
1017         return security_ops->socket_post_create(sock, family, type,
1018                                                 protocol, kern);
1019 }
1020
1021 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1022 {
1023         return security_ops->socket_bind(sock, address, addrlen);
1024 }
1025
1026 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1027 {
1028         return security_ops->socket_connect(sock, address, addrlen);
1029 }
1030
1031 int security_socket_listen(struct socket *sock, int backlog)
1032 {
1033         return security_ops->socket_listen(sock, backlog);
1034 }
1035
1036 int security_socket_accept(struct socket *sock, struct socket *newsock)
1037 {
1038         return security_ops->socket_accept(sock, newsock);
1039 }
1040
1041 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1042 {
1043         return security_ops->socket_sendmsg(sock, msg, size);
1044 }
1045
1046 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1047                             int size, int flags)
1048 {
1049         return security_ops->socket_recvmsg(sock, msg, size, flags);
1050 }
1051
1052 int security_socket_getsockname(struct socket *sock)
1053 {
1054         return security_ops->socket_getsockname(sock);
1055 }
1056
1057 int security_socket_getpeername(struct socket *sock)
1058 {
1059         return security_ops->socket_getpeername(sock);
1060 }
1061
1062 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1063 {
1064         return security_ops->socket_getsockopt(sock, level, optname);
1065 }
1066
1067 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1068 {
1069         return security_ops->socket_setsockopt(sock, level, optname);
1070 }
1071
1072 int security_socket_shutdown(struct socket *sock, int how)
1073 {
1074         return security_ops->socket_shutdown(sock, how);
1075 }
1076
1077 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1078 {
1079         return security_ops->socket_sock_rcv_skb(sk, skb);
1080 }
1081 EXPORT_SYMBOL(security_sock_rcv_skb);
1082
1083 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1084                                       int __user *optlen, unsigned len)
1085 {
1086         return security_ops->socket_getpeersec_stream(sock, optval, optlen, len);
1087 }
1088
1089 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1090 {
1091         return security_ops->socket_getpeersec_dgram(sock, skb, secid);
1092 }
1093 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1094
1095 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1096 {
1097         return security_ops->sk_alloc_security(sk, family, priority);
1098 }
1099
1100 void security_sk_free(struct sock *sk)
1101 {
1102         security_ops->sk_free_security(sk);
1103 }
1104
1105 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1106 {
1107         security_ops->sk_clone_security(sk, newsk);
1108 }
1109
1110 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1111 {
1112         security_ops->sk_getsecid(sk, &fl->secid);
1113 }
1114 EXPORT_SYMBOL(security_sk_classify_flow);
1115
1116 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1117 {
1118         security_ops->req_classify_flow(req, fl);
1119 }
1120 EXPORT_SYMBOL(security_req_classify_flow);
1121
1122 void security_sock_graft(struct sock *sk, struct socket *parent)
1123 {
1124         security_ops->sock_graft(sk, parent);
1125 }
1126 EXPORT_SYMBOL(security_sock_graft);
1127
1128 int security_inet_conn_request(struct sock *sk,
1129                         struct sk_buff *skb, struct request_sock *req)
1130 {
1131         return security_ops->inet_conn_request(sk, skb, req);
1132 }
1133 EXPORT_SYMBOL(security_inet_conn_request);
1134
1135 void security_inet_csk_clone(struct sock *newsk,
1136                         const struct request_sock *req)
1137 {
1138         security_ops->inet_csk_clone(newsk, req);
1139 }
1140
1141 void security_inet_conn_established(struct sock *sk,
1142                         struct sk_buff *skb)
1143 {
1144         security_ops->inet_conn_established(sk, skb);
1145 }
1146
1147 int security_tun_dev_create(void)
1148 {
1149         return security_ops->tun_dev_create();
1150 }
1151 EXPORT_SYMBOL(security_tun_dev_create);
1152
1153 void security_tun_dev_post_create(struct sock *sk)
1154 {
1155         return security_ops->tun_dev_post_create(sk);
1156 }
1157 EXPORT_SYMBOL(security_tun_dev_post_create);
1158
1159 int security_tun_dev_attach(struct sock *sk)
1160 {
1161         return security_ops->tun_dev_attach(sk);
1162 }
1163 EXPORT_SYMBOL(security_tun_dev_attach);
1164
1165 #endif  /* CONFIG_SECURITY_NETWORK */
1166
1167 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1168
1169 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx)
1170 {
1171         return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx);
1172 }
1173 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1174
1175 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1176                               struct xfrm_sec_ctx **new_ctxp)
1177 {
1178         return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp);
1179 }
1180
1181 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1182 {
1183         security_ops->xfrm_policy_free_security(ctx);
1184 }
1185 EXPORT_SYMBOL(security_xfrm_policy_free);
1186
1187 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1188 {
1189         return security_ops->xfrm_policy_delete_security(ctx);
1190 }
1191
1192 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx)
1193 {
1194         return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0);
1195 }
1196 EXPORT_SYMBOL(security_xfrm_state_alloc);
1197
1198 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1199                                       struct xfrm_sec_ctx *polsec, u32 secid)
1200 {
1201         if (!polsec)
1202                 return 0;
1203         /*
1204          * We want the context to be taken from secid which is usually
1205          * from the sock.
1206          */
1207         return security_ops->xfrm_state_alloc_security(x, NULL, secid);
1208 }
1209
1210 int security_xfrm_state_delete(struct xfrm_state *x)
1211 {
1212         return security_ops->xfrm_state_delete_security(x);
1213 }
1214 EXPORT_SYMBOL(security_xfrm_state_delete);
1215
1216 void security_xfrm_state_free(struct xfrm_state *x)
1217 {
1218         security_ops->xfrm_state_free_security(x);
1219 }
1220
1221 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1222 {
1223         return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir);
1224 }
1225
1226 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1227                                        struct xfrm_policy *xp, struct flowi *fl)
1228 {
1229         return security_ops->xfrm_state_pol_flow_match(x, xp, fl);
1230 }
1231
1232 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1233 {
1234         return security_ops->xfrm_decode_session(skb, secid, 1);
1235 }
1236
1237 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1238 {
1239         int rc = security_ops->xfrm_decode_session(skb, &fl->secid, 0);
1240
1241         BUG_ON(rc);
1242 }
1243 EXPORT_SYMBOL(security_skb_classify_flow);
1244
1245 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1246
1247 #ifdef CONFIG_KEYS
1248
1249 int security_key_alloc(struct key *key, const struct cred *cred,
1250                        unsigned long flags)
1251 {
1252         return security_ops->key_alloc(key, cred, flags);
1253 }
1254
1255 void security_key_free(struct key *key)
1256 {
1257         security_ops->key_free(key);
1258 }
1259
1260 int security_key_permission(key_ref_t key_ref,
1261                             const struct cred *cred, key_perm_t perm)
1262 {
1263         return security_ops->key_permission(key_ref, cred, perm);
1264 }
1265
1266 int security_key_getsecurity(struct key *key, char **_buffer)
1267 {
1268         return security_ops->key_getsecurity(key, _buffer);
1269 }
1270
1271 #endif  /* CONFIG_KEYS */
1272
1273 #ifdef CONFIG_AUDIT
1274
1275 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1276 {
1277         return security_ops->audit_rule_init(field, op, rulestr, lsmrule);
1278 }
1279
1280 int security_audit_rule_known(struct audit_krule *krule)
1281 {
1282         return security_ops->audit_rule_known(krule);
1283 }
1284
1285 void security_audit_rule_free(void *lsmrule)
1286 {
1287         security_ops->audit_rule_free(lsmrule);
1288 }
1289
1290 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1291                               struct audit_context *actx)
1292 {
1293         return security_ops->audit_rule_match(secid, field, op, lsmrule, actx);
1294 }
1295
1296 #endif /* CONFIG_AUDIT */