security/security.c

   1 /*
   2  * Security plug functions
   3  *
   4  * Copyright (C) 2001 WireX Communications, Inc <[email protected]>
   5  * Copyright (C) 2001-2002 Greg Kroah-Hartman <[email protected]>
   6  * Copyright (C) 2001 Networks Associates Technology, Inc <[email protected]>
   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/dcache.h>
  16 #include <linux/module.h>
  17 #include <linux/init.h>
  18 #include <linux/kernel.h>
  19 #include <linux/lsm_hooks.h>
  20 #include <linux/integrity.h>
  21 #include <linux/ima.h>
  22 #include <linux/evm.h>
  23 #include <linux/fsnotify.h>
  24 #include <linux/mman.h>
  25 #include <linux/mount.h>
  26 #include <linux/personality.h>
  27 #include <linux/backing-dev.h>
  28 #include <linux/string.h>
  29 #include <net/flow.h>
  30
  31 #define MAX_LSM_EVM_XATTR       2
  32
  33 /* Maximum number of letters for an LSM name string */
  34 #define SECURITY_NAME_MAX       10
  35
  36 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
  37 char *lsm_names;
  38 /* Boot-time LSM user choice */
  39 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  40         CONFIG_DEFAULT_SECURITY;
  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         int i;
  60         struct list_head *list = (struct list_head *) &security_hook_heads;
  61
  62         for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head);
  63              i++)
  64                 INIT_LIST_HEAD(&list[i]);
  65         pr_info("Security Framework initialized\n");
  66
  67         /*
  68          * Load minor LSMs, with the capability module always first.
  69          */
  70         capability_add_hooks();
  71         yama_add_hooks();
  72         loadpin_add_hooks();
  73
  74         /*
  75          * Load all the remaining security modules.
  76          */
  77         do_security_initcalls();
  78
  79         return 0;
  80 }
  81
  82 /* Save user chosen LSM */
  83 static int __init choose_lsm(char *str)
  84 {
  85         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  86         return 1;
  87 }
  88 __setup("security=", choose_lsm);
  89
  90 static bool match_last_lsm(const char *list, const char *lsm)
  91 {
  92         const char *last;
  93
  94         if (WARN_ON(!list || !lsm))
  95                 return false;
  96         last = strrchr(list, ',');
  97         if (last)
  98                 /* Pass the comma, strcmp() will check for '\0' */
  99                 last++;
 100         else
 101                 last = list;
 102         return !strcmp(last, lsm);
 103 }
 104
 105 static int lsm_append(char *new, char **result)
 106 {
 107         char *cp;
 108
 109         if (*result == NULL) {
 110                 *result = kstrdup(new, GFP_KERNEL);
 111         } else {
 112                 /* Check if it is the last registered name */
 113                 if (match_last_lsm(*result, new))
 114                         return 0;
 115                 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
 116                 if (cp == NULL)
 117                         return -ENOMEM;
 118                 kfree(*result);
 119                 *result = cp;
 120         }
 121         return 0;
 122 }
 123
 124 /**
 125  * security_module_enable - Load given security module on boot ?
 126  * @module: the name of the module
 127  *
 128  * Each LSM must pass this method before registering its own operations
 129  * to avoid security registration races. This method may also be used
 130  * to check if your LSM is currently loaded during kernel initialization.
 131  *
 132  * Returns:
 133  *
 134  * true if:
 135  *
 136  * - The passed LSM is the one chosen by user at boot time,
 137  * - or the passed LSM is configured as the default and the user did not
 138  *   choose an alternate LSM at boot time.
 139  *
 140  * Otherwise, return false.
 141  */
 142 int __init security_module_enable(const char *module)
 143 {
 144         return !strcmp(module, chosen_lsm);
 145 }
 146
 147 /**
 148  * security_add_hooks - Add a modules hooks to the hook lists.
 149  * @hooks: the hooks to add
 150  * @count: the number of hooks to add
 151  * @lsm: the name of the security module
 152  *
 153  * Each LSM has to register its hooks with the infrastructure.
 154  */
 155 void __init security_add_hooks(struct security_hook_list *hooks, int count,
 156                                 char *lsm)
 157 {
 158         int i;
 159
 160         for (i = 0; i < count; i++) {
 161                 hooks[i].lsm = lsm;
 162                 list_add_tail_rcu(&hooks[i].list, hooks[i].head);
 163         }
 164         if (lsm_append(lsm, &lsm_names) < 0)
 165                 panic("%s - Cannot get early memory.\n", __func__);
 166 }
 167
 168 /*
 169  * Hook list operation macros.
 170  *
 171  * call_void_hook:
 172  *      This is a hook that does not return a value.
 173  *
 174  * call_int_hook:
 175  *      This is a hook that returns a value.
 176  */
 177
 178 #define call_void_hook(FUNC, ...)                               \
 179         do {                                                    \
 180                 struct security_hook_list *P;                   \
 181                                                                 \
 182                 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
 183                         P->hook.FUNC(__VA_ARGS__);              \
 184         } while (0)
 185
 186 #define call_int_hook(FUNC, IRC, ...) ({                        \
 187         int RC = IRC;                                           \
 188         do {                                                    \
 189                 struct security_hook_list *P;                   \
 190                                                                 \
 191                 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
 192                         RC = P->hook.FUNC(__VA_ARGS__);         \
 193                         if (RC != 0)                            \
 194                                 break;                          \
 195                 }                                               \
 196         } while (0);                                            \
 197         RC;                                                     \
 198 })
 199
 200 /* Security operations */
 201
 202 int security_binder_set_context_mgr(struct task_struct *mgr)
 203 {
 204         return call_int_hook(binder_set_context_mgr, 0, mgr);
 205 }
 206
 207 int security_binder_transaction(struct task_struct *from,
 208                                 struct task_struct *to)
 209 {
 210         return call_int_hook(binder_transaction, 0, from, to);
 211 }
 212
 213 int security_binder_transfer_binder(struct task_struct *from,
 214                                     struct task_struct *to)
 215 {
 216         return call_int_hook(binder_transfer_binder, 0, from, to);
 217 }
 218
 219 int security_binder_transfer_file(struct task_struct *from,
 220                                   struct task_struct *to, struct file *file)
 221 {
 222         return call_int_hook(binder_transfer_file, 0, from, to, file);
 223 }
 224
 225 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 226 {
 227         return call_int_hook(ptrace_access_check, 0, child, mode);
 228 }
 229
 230 int security_ptrace_traceme(struct task_struct *parent)
 231 {
 232         return call_int_hook(ptrace_traceme, 0, parent);
 233 }
 234
 235 int security_capget(struct task_struct *target,
 236                      kernel_cap_t *effective,
 237                      kernel_cap_t *inheritable,
 238                      kernel_cap_t *permitted)
 239 {
 240         return call_int_hook(capget, 0, target,
 241                                 effective, inheritable, permitted);
 242 }
 243
 244 int security_capset(struct cred *new, const struct cred *old,
 245                     const kernel_cap_t *effective,
 246                     const kernel_cap_t *inheritable,
 247                     const kernel_cap_t *permitted)
 248 {
 249         return call_int_hook(capset, 0, new, old,
 250                                 effective, inheritable, permitted);
 251 }
 252
 253 int security_capable(const struct cred *cred, struct user_namespace *ns,
 254                      int cap)
 255 {
 256         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
 257 }
 258
 259 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 260                              int cap)
 261 {
 262         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
 263 }
 264
 265 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 266 {
 267         return call_int_hook(quotactl, 0, cmds, type, id, sb);
 268 }
 269
 270 int security_quota_on(struct dentry *dentry)
 271 {
 272         return call_int_hook(quota_on, 0, dentry);
 273 }
 274
 275 int security_syslog(int type)
 276 {
 277         return call_int_hook(syslog, 0, type);
 278 }
 279
 280 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
 281 {
 282         return call_int_hook(settime, 0, ts, tz);
 283 }
 284
 285 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 286 {
 287         struct security_hook_list *hp;
 288         int cap_sys_admin = 1;
 289         int rc;
 290
 291         /*
 292          * The module will respond with a positive value if
 293          * it thinks the __vm_enough_memory() call should be
 294          * made with the cap_sys_admin set. If all of the modules
 295          * agree that it should be set it will. If any module
 296          * thinks it should not be set it won't.
 297          */
 298         list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
 299                 rc = hp->hook.vm_enough_memory(mm, pages);
 300                 if (rc <= 0) {
 301                         cap_sys_admin = 0;
 302                         break;
 303                 }
 304         }
 305         return __vm_enough_memory(mm, pages, cap_sys_admin);
 306 }
 307
 308 int security_bprm_set_creds(struct linux_binprm *bprm)
 309 {
 310         return call_int_hook(bprm_set_creds, 0, bprm);
 311 }
 312
 313 int security_bprm_check(struct linux_binprm *bprm)
 314 {
 315         int ret;
 316
 317         ret = call_int_hook(bprm_check_security, 0, bprm);
 318         if (ret)
 319                 return ret;
 320         return ima_bprm_check(bprm);
 321 }
 322
 323 void security_bprm_committing_creds(struct linux_binprm *bprm)
 324 {
 325         call_void_hook(bprm_committing_creds, bprm);
 326 }
 327
 328 void security_bprm_committed_creds(struct linux_binprm *bprm)
 329 {
 330         call_void_hook(bprm_committed_creds, bprm);
 331 }
 332
 333 int security_bprm_secureexec(struct linux_binprm *bprm)
 334 {
 335         return call_int_hook(bprm_secureexec, 0, bprm);
 336 }
 337
 338 int security_sb_alloc(struct super_block *sb)
 339 {
 340         return call_int_hook(sb_alloc_security, 0, sb);
 341 }
 342
 343 void security_sb_free(struct super_block *sb)
 344 {
 345         call_void_hook(sb_free_security, sb);
 346 }
 347
 348 int security_sb_copy_data(char *orig, char *copy)
 349 {
 350         return call_int_hook(sb_copy_data, 0, orig, copy);
 351 }
 352 EXPORT_SYMBOL(security_sb_copy_data);
 353
 354 int security_sb_remount(struct super_block *sb, void *data)
 355 {
 356         return call_int_hook(sb_remount, 0, sb, data);
 357 }
 358
 359 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 360 {
 361         return call_int_hook(sb_kern_mount, 0, sb, flags, data);
 362 }
 363
 364 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 365 {
 366         return call_int_hook(sb_show_options, 0, m, sb);
 367 }
 368
 369 int security_sb_statfs(struct dentry *dentry)
 370 {
 371         return call_int_hook(sb_statfs, 0, dentry);
 372 }
 373
 374 int security_sb_mount(const char *dev_name, const struct path *path,
 375                        const char *type, unsigned long flags, void *data)
 376 {
 377         return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
 378 }
 379
 380 int security_sb_umount(struct vfsmount *mnt, int flags)
 381 {
 382         return call_int_hook(sb_umount, 0, mnt, flags);
 383 }
 384
 385 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
 386 {
 387         return call_int_hook(sb_pivotroot, 0, old_path, new_path);
 388 }
 389
 390 int security_sb_set_mnt_opts(struct super_block *sb,
 391                                 struct security_mnt_opts *opts,
 392                                 unsigned long kern_flags,
 393                                 unsigned long *set_kern_flags)
 394 {
 395         return call_int_hook(sb_set_mnt_opts,
 396                                 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
 397                                 opts, kern_flags, set_kern_flags);
 398 }
 399 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 400
 401 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 402                                 struct super_block *newsb)
 403 {
 404         return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb);
 405 }
 406 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 407
 408 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 409 {
 410         return call_int_hook(sb_parse_opts_str, 0, options, opts);
 411 }
 412 EXPORT_SYMBOL(security_sb_parse_opts_str);
 413
 414 int security_inode_alloc(struct inode *inode)
 415 {
 416         inode->i_security = NULL;
 417         return call_int_hook(inode_alloc_security, 0, inode);
 418 }
 419
 420 void security_inode_free(struct inode *inode)
 421 {
 422         integrity_inode_free(inode);
 423         call_void_hook(inode_free_security, inode);
 424 }
 425
 426 int security_dentry_init_security(struct dentry *dentry, int mode,
 427                                         const struct qstr *name, void **ctx,
 428                                         u32 *ctxlen)
 429 {
 430         return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
 431                                 name, ctx, ctxlen);
 432 }
 433 EXPORT_SYMBOL(security_dentry_init_security);
 434
 435 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 436                                     struct qstr *name,
 437                                     const struct cred *old, struct cred *new)
 438 {
 439         return call_int_hook(dentry_create_files_as, 0, dentry, mode,
 440                                 name, old, new);
 441 }
 442 EXPORT_SYMBOL(security_dentry_create_files_as);
 443
 444 int security_inode_init_security(struct inode *inode, struct inode *dir,
 445                                  const struct qstr *qstr,
 446                                  const initxattrs initxattrs, void *fs_data)
 447 {
 448         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
 449         struct xattr *lsm_xattr, *evm_xattr, *xattr;
 450         int ret;
 451
 452         if (unlikely(IS_PRIVATE(inode)))
 453                 return 0;
 454
 455         if (!initxattrs)
 456                 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
 457                                      dir, qstr, NULL, NULL, NULL);
 458         memset(new_xattrs, 0, sizeof(new_xattrs));
 459         lsm_xattr = new_xattrs;
 460         ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
 461                                                 &lsm_xattr->name,
 462                                                 &lsm_xattr->value,
 463                                                 &lsm_xattr->value_len);
 464         if (ret)
 465                 goto out;
 466
 467         evm_xattr = lsm_xattr + 1;
 468         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
 469         if (ret)
 470                 goto out;
 471         ret = initxattrs(inode, new_xattrs, fs_data);
 472 out:
 473         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
 474                 kfree(xattr->value);
 475         return (ret == -EOPNOTSUPP) ? 0 : ret;
 476 }
 477 EXPORT_SYMBOL(security_inode_init_security);
 478
 479 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 480                                      const struct qstr *qstr, const char **name,
 481                                      void **value, size_t *len)
 482 {
 483         if (unlikely(IS_PRIVATE(inode)))
 484                 return -EOPNOTSUPP;
 485         return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
 486                              qstr, name, value, len);
 487 }
 488 EXPORT_SYMBOL(security_old_inode_init_security);
 489
 490 #ifdef CONFIG_SECURITY_PATH
 491 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
 492                         unsigned int dev)
 493 {
 494         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 495                 return 0;
 496         return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
 497 }
 498 EXPORT_SYMBOL(security_path_mknod);
 499
 500 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
 501 {
 502         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 503                 return 0;
 504         return call_int_hook(path_mkdir, 0, dir, dentry, mode);
 505 }
 506 EXPORT_SYMBOL(security_path_mkdir);
 507
 508 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
 509 {
 510         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 511                 return 0;
 512         return call_int_hook(path_rmdir, 0, dir, dentry);
 513 }
 514
 515 int security_path_unlink(const struct path *dir, struct dentry *dentry)
 516 {
 517         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 518                 return 0;
 519         return call_int_hook(path_unlink, 0, dir, dentry);
 520 }
 521 EXPORT_SYMBOL(security_path_unlink);
 522
 523 int security_path_symlink(const struct path *dir, struct dentry *dentry,
 524                           const char *old_name)
 525 {
 526         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 527                 return 0;
 528         return call_int_hook(path_symlink, 0, dir, dentry, old_name);
 529 }
 530
 531 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
 532                        struct dentry *new_dentry)
 533 {
 534         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 535                 return 0;
 536         return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
 537 }
 538
 539 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
 540                          const struct path *new_dir, struct dentry *new_dentry,
 541                          unsigned int flags)
 542 {
 543         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 544                      (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 545                 return 0;
 546
 547         if (flags & RENAME_EXCHANGE) {
 548                 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
 549                                         old_dir, old_dentry);
 550                 if (err)
 551                         return err;
 552         }
 553
 554         return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
 555                                 new_dentry);
 556 }
 557 EXPORT_SYMBOL(security_path_rename);
 558
 559 int security_path_truncate(const struct path *path)
 560 {
 561         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 562                 return 0;
 563         return call_int_hook(path_truncate, 0, path);
 564 }
 565
 566 int security_path_chmod(const struct path *path, umode_t mode)
 567 {
 568         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 569                 return 0;
 570         return call_int_hook(path_chmod, 0, path, mode);
 571 }
 572
 573 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 574 {
 575         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 576                 return 0;
 577         return call_int_hook(path_chown, 0, path, uid, gid);
 578 }
 579
 580 int security_path_chroot(const struct path *path)
 581 {
 582         return call_int_hook(path_chroot, 0, path);
 583 }
 584 #endif
 585
 586 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
 587 {
 588         if (unlikely(IS_PRIVATE(dir)))
 589                 return 0;
 590         return call_int_hook(inode_create, 0, dir, dentry, mode);
 591 }
 592 EXPORT_SYMBOL_GPL(security_inode_create);
 593
 594 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 595                          struct dentry *new_dentry)
 596 {
 597         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 598                 return 0;
 599         return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
 600 }
 601
 602 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 603 {
 604         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 605                 return 0;
 606         return call_int_hook(inode_unlink, 0, dir, dentry);
 607 }
 608
 609 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 610                             const char *old_name)
 611 {
 612         if (unlikely(IS_PRIVATE(dir)))
 613                 return 0;
 614         return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
 615 }
 616
 617 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 618 {
 619         if (unlikely(IS_PRIVATE(dir)))
 620                 return 0;
 621         return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
 622 }
 623 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 624
 625 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 626 {
 627         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 628                 return 0;
 629         return call_int_hook(inode_rmdir, 0, dir, dentry);
 630 }
 631
 632 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
 633 {
 634         if (unlikely(IS_PRIVATE(dir)))
 635                 return 0;
 636         return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
 637 }
 638
 639 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 640                            struct inode *new_dir, struct dentry *new_dentry,
 641                            unsigned int flags)
 642 {
 643         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 644             (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 645                 return 0;
 646
 647         if (flags & RENAME_EXCHANGE) {
 648                 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
 649                                                      old_dir, old_dentry);
 650                 if (err)
 651                         return err;
 652         }
 653
 654         return call_int_hook(inode_rename, 0, old_dir, old_dentry,
 655                                            new_dir, new_dentry);
 656 }
 657
 658 int security_inode_readlink(struct dentry *dentry)
 659 {
 660         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 661                 return 0;
 662         return call_int_hook(inode_readlink, 0, dentry);
 663 }
 664
 665 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 666                                bool rcu)
 667 {
 668         if (unlikely(IS_PRIVATE(inode)))
 669                 return 0;
 670         return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
 671 }
 672
 673 int security_inode_permission(struct inode *inode, int mask)
 674 {
 675         if (unlikely(IS_PRIVATE(inode)))
 676                 return 0;
 677         return call_int_hook(inode_permission, 0, inode, mask);
 678 }
 679
 680 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 681 {
 682         int ret;
 683
 684         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 685                 return 0;
 686         ret = call_int_hook(inode_setattr, 0, dentry, attr);
 687         if (ret)
 688                 return ret;
 689         return evm_inode_setattr(dentry, attr);
 690 }
 691 EXPORT_SYMBOL_GPL(security_inode_setattr);
 692
 693 int security_inode_getattr(const struct path *path)
 694 {
 695         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 696                 return 0;
 697         return call_int_hook(inode_getattr, 0, path);
 698 }
 699
 700 int security_inode_setxattr(struct dentry *dentry, const char *name,
 701                             const void *value, size_t size, int flags)
 702 {
 703         int ret;
 704
 705         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 706                 return 0;
 707         /*
 708          * SELinux and Smack integrate the cap call,
 709          * so assume that all LSMs supplying this call do so.
 710          */
 711         ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
 712                                 flags);
 713
 714         if (ret == 1)
 715                 ret = cap_inode_setxattr(dentry, name, value, size, flags);
 716         if (ret)
 717                 return ret;
 718         ret = ima_inode_setxattr(dentry, name, value, size);
 719         if (ret)
 720                 return ret;
 721         return evm_inode_setxattr(dentry, name, value, size);
 722 }
 723
 724 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 725                                   const void *value, size_t size, int flags)
 726 {
 727         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 728                 return;
 729         call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
 730         evm_inode_post_setxattr(dentry, name, value, size);
 731 }
 732
 733 int security_inode_getxattr(struct dentry *dentry, const char *name)
 734 {
 735         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 736                 return 0;
 737         return call_int_hook(inode_getxattr, 0, dentry, name);
 738 }
 739
 740 int security_inode_listxattr(struct dentry *dentry)
 741 {
 742         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 743                 return 0;
 744         return call_int_hook(inode_listxattr, 0, dentry);
 745 }
 746
 747 int security_inode_removexattr(struct dentry *dentry, const char *name)
 748 {
 749         int ret;
 750
 751         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 752                 return 0;
 753         /*
 754          * SELinux and Smack integrate the cap call,
 755          * so assume that all LSMs supplying this call do so.
 756          */
 757         ret = call_int_hook(inode_removexattr, 1, dentry, name);
 758         if (ret == 1)
 759                 ret = cap_inode_removexattr(dentry, name);
 760         if (ret)
 761                 return ret;
 762         ret = ima_inode_removexattr(dentry, name);
 763         if (ret)
 764                 return ret;
 765         return evm_inode_removexattr(dentry, name);
 766 }
 767
 768 int security_inode_need_killpriv(struct dentry *dentry)
 769 {
 770         return call_int_hook(inode_need_killpriv, 0, dentry);
 771 }
 772
 773 int security_inode_killpriv(struct dentry *dentry)
 774 {
 775         return call_int_hook(inode_killpriv, 0, dentry);
 776 }
 777
 778 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 779 {
 780         struct security_hook_list *hp;
 781         int rc;
 782
 783         if (unlikely(IS_PRIVATE(inode)))
 784                 return -EOPNOTSUPP;
 785         /*
 786          * Only one module will provide an attribute with a given name.
 787          */
 788         list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
 789                 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
 790                 if (rc != -EOPNOTSUPP)
 791                         return rc;
 792         }
 793         return -EOPNOTSUPP;
 794 }
 795
 796 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 797 {
 798         struct security_hook_list *hp;
 799         int rc;
 800
 801         if (unlikely(IS_PRIVATE(inode)))
 802                 return -EOPNOTSUPP;
 803         /*
 804          * Only one module will provide an attribute with a given name.
 805          */
 806         list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
 807                 rc = hp->hook.inode_setsecurity(inode, name, value, size,
 808                                                                 flags);
 809                 if (rc != -EOPNOTSUPP)
 810                         return rc;
 811         }
 812         return -EOPNOTSUPP;
 813 }
 814
 815 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 816 {
 817         if (unlikely(IS_PRIVATE(inode)))
 818                 return 0;
 819         return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
 820 }
 821 EXPORT_SYMBOL(security_inode_listsecurity);
 822
 823 void security_inode_getsecid(struct inode *inode, u32 *secid)
 824 {
 825         call_void_hook(inode_getsecid, inode, secid);
 826 }
 827
 828 int security_inode_copy_up(struct dentry *src, struct cred **new)
 829 {
 830         return call_int_hook(inode_copy_up, 0, src, new);
 831 }
 832 EXPORT_SYMBOL(security_inode_copy_up);
 833
 834 int security_inode_copy_up_xattr(const char *name)
 835 {
 836         return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
 837 }
 838 EXPORT_SYMBOL(security_inode_copy_up_xattr);
 839
 840 int security_file_permission(struct file *file, int mask)
 841 {
 842         int ret;
 843
 844         ret = call_int_hook(file_permission, 0, file, mask);
 845         if (ret)
 846                 return ret;
 847
 848         return fsnotify_perm(file, mask);
 849 }
 850
 851 int security_file_alloc(struct file *file)
 852 {
 853         return call_int_hook(file_alloc_security, 0, file);
 854 }
 855
 856 void security_file_free(struct file *file)
 857 {
 858         call_void_hook(file_free_security, file);
 859 }
 860
 861 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 862 {
 863         return call_int_hook(file_ioctl, 0, file, cmd, arg);
 864 }
 865
 866 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
 867 {
 868         /*
 869          * Does we have PROT_READ and does the application expect
 870          * it to imply PROT_EXEC?  If not, nothing to talk about...
 871          */
 872         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
 873                 return prot;
 874         if (!(current->personality & READ_IMPLIES_EXEC))
 875                 return prot;
 876         /*
 877          * if that's an anonymous mapping, let it.
 878          */
 879         if (!file)
 880                 return prot | PROT_EXEC;
 881         /*
 882          * ditto if it's not on noexec mount, except that on !MMU we need
 883          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
 884          */
 885         if (!path_noexec(&file->f_path)) {
 886 #ifndef CONFIG_MMU
 887                 if (file->f_op->mmap_capabilities) {
 888                         unsigned caps = file->f_op->mmap_capabilities(file);
 889                         if (!(caps & NOMMU_MAP_EXEC))
 890                                 return prot;
 891                 }
 892 #endif
 893                 return prot | PROT_EXEC;
 894         }
 895         /* anything on noexec mount won't get PROT_EXEC */
 896         return prot;
 897 }
 898
 899 int security_mmap_file(struct file *file, unsigned long prot,
 900                         unsigned long flags)
 901 {
 902         int ret;
 903         ret = call_int_hook(mmap_file, 0, file, prot,
 904                                         mmap_prot(file, prot), flags);
 905         if (ret)
 906                 return ret;
 907         return ima_file_mmap(file, prot);
 908 }
 909
 910 int security_mmap_addr(unsigned long addr)
 911 {
 912         return call_int_hook(mmap_addr, 0, addr);
 913 }
 914
 915 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 916                             unsigned long prot)
 917 {
 918         return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
 919 }
 920
 921 int security_file_lock(struct file *file, unsigned int cmd)
 922 {
 923         return call_int_hook(file_lock, 0, file, cmd);
 924 }
 925
 926 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 927 {
 928         return call_int_hook(file_fcntl, 0, file, cmd, arg);
 929 }
 930
 931 void security_file_set_fowner(struct file *file)
 932 {
 933         call_void_hook(file_set_fowner, file);
 934 }
 935
 936 int security_file_send_sigiotask(struct task_struct *tsk,
 937                                   struct fown_struct *fown, int sig)
 938 {
 939         return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
 940 }
 941
 942 int security_file_receive(struct file *file)
 943 {
 944         return call_int_hook(file_receive, 0, file);
 945 }
 946
 947 int security_file_open(struct file *file, const struct cred *cred)
 948 {
 949         int ret;
 950
 951         ret = call_int_hook(file_open, 0, file, cred);
 952         if (ret)
 953                 return ret;
 954
 955         return fsnotify_perm(file, MAY_OPEN);
 956 }
 957
 958 int security_task_create(unsigned long clone_flags)
 959 {
 960         return call_int_hook(task_create, 0, clone_flags);
 961 }
 962
 963 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
 964 {
 965         return call_int_hook(task_alloc, 0, task, clone_flags);
 966 }
 967
 968 void security_task_free(struct task_struct *task)
 969 {
 970         call_void_hook(task_free, task);
 971 }
 972
 973 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 974 {
 975         return call_int_hook(cred_alloc_blank, 0, cred, gfp);
 976 }
 977
 978 void security_cred_free(struct cred *cred)
 979 {
 980         call_void_hook(cred_free, cred);
 981 }
 982
 983 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 984 {
 985         return call_int_hook(cred_prepare, 0, new, old, gfp);
 986 }
 987
 988 void security_transfer_creds(struct cred *new, const struct cred *old)
 989 {
 990         call_void_hook(cred_transfer, new, old);
 991 }
 992
 993 int security_kernel_act_as(struct cred *new, u32 secid)
 994 {
 995         return call_int_hook(kernel_act_as, 0, new, secid);
 996 }
 997
 998 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
 999 {
1000         return call_int_hook(kernel_create_files_as, 0, new, inode);
1001 }
1002
1003 int security_kernel_module_request(char *kmod_name)
1004 {
1005         return call_int_hook(kernel_module_request, 0, kmod_name);
1006 }
1007
1008 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1009 {
1010         int ret;
1011
1012         ret = call_int_hook(kernel_read_file, 0, file, id);
1013         if (ret)
1014                 return ret;
1015         return ima_read_file(file, id);
1016 }
1017 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1018
1019 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1020                                    enum kernel_read_file_id id)
1021 {
1022         int ret;
1023
1024         ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1025         if (ret)
1026                 return ret;
1027         return ima_post_read_file(file, buf, size, id);
1028 }
1029 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1030
1031 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1032                              int flags)
1033 {
1034         return call_int_hook(task_fix_setuid, 0, new, old, flags);
1035 }
1036
1037 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1038 {
1039         return call_int_hook(task_setpgid, 0, p, pgid);
1040 }
1041
1042 int security_task_getpgid(struct task_struct *p)
1043 {
1044         return call_int_hook(task_getpgid, 0, p);
1045 }
1046
1047 int security_task_getsid(struct task_struct *p)
1048 {
1049         return call_int_hook(task_getsid, 0, p);
1050 }
1051
1052 void security_task_getsecid(struct task_struct *p, u32 *secid)
1053 {
1054         *secid = 0;
1055         call_void_hook(task_getsecid, p, secid);
1056 }
1057 EXPORT_SYMBOL(security_task_getsecid);
1058
1059 int security_task_setnice(struct task_struct *p, int nice)
1060 {
1061         return call_int_hook(task_setnice, 0, p, nice);
1062 }
1063
1064 int security_task_setioprio(struct task_struct *p, int ioprio)
1065 {
1066         return call_int_hook(task_setioprio, 0, p, ioprio);
1067 }
1068
1069 int security_task_getioprio(struct task_struct *p)
1070 {
1071         return call_int_hook(task_getioprio, 0, p);
1072 }
1073
1074 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1075                           unsigned int flags)
1076 {
1077         return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1078 }
1079
1080 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1081                 struct rlimit *new_rlim)
1082 {
1083         return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1084 }
1085
1086 int security_task_setscheduler(struct task_struct *p)
1087 {
1088         return call_int_hook(task_setscheduler, 0, p);
1089 }
1090
1091 int security_task_getscheduler(struct task_struct *p)
1092 {
1093         return call_int_hook(task_getscheduler, 0, p);
1094 }
1095
1096 int security_task_movememory(struct task_struct *p)
1097 {
1098         return call_int_hook(task_movememory, 0, p);
1099 }
1100
1101 int security_task_kill(struct task_struct *p, struct siginfo *info,
1102                         int sig, u32 secid)
1103 {
1104         return call_int_hook(task_kill, 0, p, info, sig, secid);
1105 }
1106
1107 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1108                          unsigned long arg4, unsigned long arg5)
1109 {
1110         int thisrc;
1111         int rc = -ENOSYS;
1112         struct security_hook_list *hp;
1113
1114         list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1115                 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1116                 if (thisrc != -ENOSYS) {
1117                         rc = thisrc;
1118                         if (thisrc != 0)
1119                                 break;
1120                 }
1121         }
1122         return rc;
1123 }
1124
1125 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1126 {
1127         call_void_hook(task_to_inode, p, inode);
1128 }
1129
1130 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1131 {
1132         return call_int_hook(ipc_permission, 0, ipcp, flag);
1133 }
1134
1135 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1136 {
1137         *secid = 0;
1138         call_void_hook(ipc_getsecid, ipcp, secid);
1139 }
1140
1141 int security_msg_msg_alloc(struct msg_msg *msg)
1142 {
1143         return call_int_hook(msg_msg_alloc_security, 0, msg);
1144 }
1145
1146 void security_msg_msg_free(struct msg_msg *msg)
1147 {
1148         call_void_hook(msg_msg_free_security, msg);
1149 }
1150
1151 int security_msg_queue_alloc(struct msg_queue *msq)
1152 {
1153         return call_int_hook(msg_queue_alloc_security, 0, msq);
1154 }
1155
1156 void security_msg_queue_free(struct msg_queue *msq)
1157 {
1158         call_void_hook(msg_queue_free_security, msq);
1159 }
1160
1161 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
1162 {
1163         return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1164 }
1165
1166 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1167 {
1168         return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1169 }
1170
1171 int security_msg_queue_msgsnd(struct msg_queue *msq,
1172                                struct msg_msg *msg, int msqflg)
1173 {
1174         return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1175 }
1176
1177 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1178                                struct task_struct *target, long type, int mode)
1179 {
1180         return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1181 }
1182
1183 int security_shm_alloc(struct shmid_kernel *shp)
1184 {
1185         return call_int_hook(shm_alloc_security, 0, shp);
1186 }
1187
1188 void security_shm_free(struct shmid_kernel *shp)
1189 {
1190         call_void_hook(shm_free_security, shp);
1191 }
1192
1193 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1194 {
1195         return call_int_hook(shm_associate, 0, shp, shmflg);
1196 }
1197
1198 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1199 {
1200         return call_int_hook(shm_shmctl, 0, shp, cmd);
1201 }
1202
1203 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1204 {
1205         return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1206 }
1207
1208 int security_sem_alloc(struct sem_array *sma)
1209 {
1210         return call_int_hook(sem_alloc_security, 0, sma);
1211 }
1212
1213 void security_sem_free(struct sem_array *sma)
1214 {
1215         call_void_hook(sem_free_security, sma);
1216 }
1217
1218 int security_sem_associate(struct sem_array *sma, int semflg)
1219 {
1220         return call_int_hook(sem_associate, 0, sma, semflg);
1221 }
1222
1223 int security_sem_semctl(struct sem_array *sma, int cmd)
1224 {
1225         return call_int_hook(sem_semctl, 0, sma, cmd);
1226 }
1227
1228 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1229                         unsigned nsops, int alter)
1230 {
1231         return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1232 }
1233
1234 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1235 {
1236         if (unlikely(inode && IS_PRIVATE(inode)))
1237                 return;
1238         call_void_hook(d_instantiate, dentry, inode);
1239 }
1240 EXPORT_SYMBOL(security_d_instantiate);
1241
1242 int security_getprocattr(struct task_struct *p, char *name, char **value)
1243 {
1244         return call_int_hook(getprocattr, -EINVAL, p, name, value);
1245 }
1246
1247 int security_setprocattr(const char *name, void *value, size_t size)
1248 {
1249         return call_int_hook(setprocattr, -EINVAL, name, value, size);
1250 }
1251
1252 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1253 {
1254         return call_int_hook(netlink_send, 0, sk, skb);
1255 }
1256
1257 int security_ismaclabel(const char *name)
1258 {
1259         return call_int_hook(ismaclabel, 0, name);
1260 }
1261 EXPORT_SYMBOL(security_ismaclabel);
1262
1263 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1264 {
1265         return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1266                                 seclen);
1267 }
1268 EXPORT_SYMBOL(security_secid_to_secctx);
1269
1270 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1271 {
1272         *secid = 0;
1273         return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1274 }
1275 EXPORT_SYMBOL(security_secctx_to_secid);
1276
1277 void security_release_secctx(char *secdata, u32 seclen)
1278 {
1279         call_void_hook(release_secctx, secdata, seclen);
1280 }
1281 EXPORT_SYMBOL(security_release_secctx);
1282
1283 void security_inode_invalidate_secctx(struct inode *inode)
1284 {
1285         call_void_hook(inode_invalidate_secctx, inode);
1286 }
1287 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1288
1289 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1290 {
1291         return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1292 }
1293 EXPORT_SYMBOL(security_inode_notifysecctx);
1294
1295 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1296 {
1297         return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1298 }
1299 EXPORT_SYMBOL(security_inode_setsecctx);
1300
1301 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1302 {
1303         return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1304 }
1305 EXPORT_SYMBOL(security_inode_getsecctx);
1306
1307 #ifdef CONFIG_SECURITY_NETWORK
1308
1309 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1310 {
1311         return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1312 }
1313 EXPORT_SYMBOL(security_unix_stream_connect);
1314
1315 int security_unix_may_send(struct socket *sock,  struct socket *other)
1316 {
1317         return call_int_hook(unix_may_send, 0, sock, other);
1318 }
1319 EXPORT_SYMBOL(security_unix_may_send);
1320
1321 int security_socket_create(int family, int type, int protocol, int kern)
1322 {
1323         return call_int_hook(socket_create, 0, family, type, protocol, kern);
1324 }
1325
1326 int security_socket_post_create(struct socket *sock, int family,
1327                                 int type, int protocol, int kern)
1328 {
1329         return call_int_hook(socket_post_create, 0, sock, family, type,
1330                                                 protocol, kern);
1331 }
1332
1333 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1334 {
1335         return call_int_hook(socket_bind, 0, sock, address, addrlen);
1336 }
1337
1338 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1339 {
1340         return call_int_hook(socket_connect, 0, sock, address, addrlen);
1341 }
1342
1343 int security_socket_listen(struct socket *sock, int backlog)
1344 {
1345         return call_int_hook(socket_listen, 0, sock, backlog);
1346 }
1347
1348 int security_socket_accept(struct socket *sock, struct socket *newsock)
1349 {
1350         return call_int_hook(socket_accept, 0, sock, newsock);
1351 }
1352
1353 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1354 {
1355         return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1356 }
1357
1358 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1359                             int size, int flags)
1360 {
1361         return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1362 }
1363
1364 int security_socket_getsockname(struct socket *sock)
1365 {
1366         return call_int_hook(socket_getsockname, 0, sock);
1367 }
1368
1369 int security_socket_getpeername(struct socket *sock)
1370 {
1371         return call_int_hook(socket_getpeername, 0, sock);
1372 }
1373
1374 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1375 {
1376         return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1377 }
1378
1379 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1380 {
1381         return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1382 }
1383
1384 int security_socket_shutdown(struct socket *sock, int how)
1385 {
1386         return call_int_hook(socket_shutdown, 0, sock, how);
1387 }
1388
1389 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1390 {
1391         return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1392 }
1393 EXPORT_SYMBOL(security_sock_rcv_skb);
1394
1395 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1396                                       int __user *optlen, unsigned len)
1397 {
1398         return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1399                                 optval, optlen, len);
1400 }
1401
1402 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1403 {
1404         return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1405                              skb, secid);
1406 }
1407 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1408
1409 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1410 {
1411         return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1412 }
1413
1414 void security_sk_free(struct sock *sk)
1415 {
1416         call_void_hook(sk_free_security, sk);
1417 }
1418
1419 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1420 {
1421         call_void_hook(sk_clone_security, sk, newsk);
1422 }
1423 EXPORT_SYMBOL(security_sk_clone);
1424
1425 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1426 {
1427         call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1428 }
1429 EXPORT_SYMBOL(security_sk_classify_flow);
1430
1431 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1432 {
1433         call_void_hook(req_classify_flow, req, fl);
1434 }
1435 EXPORT_SYMBOL(security_req_classify_flow);
1436
1437 void security_sock_graft(struct sock *sk, struct socket *parent)
1438 {
1439         call_void_hook(sock_graft, sk, parent);
1440 }
1441 EXPORT_SYMBOL(security_sock_graft);
1442
1443 int security_inet_conn_request(struct sock *sk,
1444                         struct sk_buff *skb, struct request_sock *req)
1445 {
1446         return call_int_hook(inet_conn_request, 0, sk, skb, req);
1447 }
1448 EXPORT_SYMBOL(security_inet_conn_request);
1449
1450 void security_inet_csk_clone(struct sock *newsk,
1451                         const struct request_sock *req)
1452 {
1453         call_void_hook(inet_csk_clone, newsk, req);
1454 }
1455
1456 void security_inet_conn_established(struct sock *sk,
1457                         struct sk_buff *skb)
1458 {
1459         call_void_hook(inet_conn_established, sk, skb);
1460 }
1461
1462 int security_secmark_relabel_packet(u32 secid)
1463 {
1464         return call_int_hook(secmark_relabel_packet, 0, secid);
1465 }
1466 EXPORT_SYMBOL(security_secmark_relabel_packet);
1467
1468 void security_secmark_refcount_inc(void)
1469 {
1470         call_void_hook(secmark_refcount_inc);
1471 }
1472 EXPORT_SYMBOL(security_secmark_refcount_inc);
1473
1474 void security_secmark_refcount_dec(void)
1475 {
1476         call_void_hook(secmark_refcount_dec);
1477 }
1478 EXPORT_SYMBOL(security_secmark_refcount_dec);
1479
1480 int security_tun_dev_alloc_security(void **security)
1481 {
1482         return call_int_hook(tun_dev_alloc_security, 0, security);
1483 }
1484 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1485
1486 void security_tun_dev_free_security(void *security)
1487 {
1488         call_void_hook(tun_dev_free_security, security);
1489 }
1490 EXPORT_SYMBOL(security_tun_dev_free_security);
1491
1492 int security_tun_dev_create(void)
1493 {
1494         return call_int_hook(tun_dev_create, 0);
1495 }
1496 EXPORT_SYMBOL(security_tun_dev_create);
1497
1498 int security_tun_dev_attach_queue(void *security)
1499 {
1500         return call_int_hook(tun_dev_attach_queue, 0, security);
1501 }
1502 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1503
1504 int security_tun_dev_attach(struct sock *sk, void *security)
1505 {
1506         return call_int_hook(tun_dev_attach, 0, sk, security);
1507 }
1508 EXPORT_SYMBOL(security_tun_dev_attach);
1509
1510 int security_tun_dev_open(void *security)
1511 {
1512         return call_int_hook(tun_dev_open, 0, security);
1513 }
1514 EXPORT_SYMBOL(security_tun_dev_open);
1515
1516 #endif  /* CONFIG_SECURITY_NETWORK */
1517
1518 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1519
1520 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1521                                struct xfrm_user_sec_ctx *sec_ctx,
1522                                gfp_t gfp)
1523 {
1524         return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1525 }
1526 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1527
1528 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1529                               struct xfrm_sec_ctx **new_ctxp)
1530 {
1531         return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1532 }
1533
1534 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1535 {
1536         call_void_hook(xfrm_policy_free_security, ctx);
1537 }
1538 EXPORT_SYMBOL(security_xfrm_policy_free);
1539
1540 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1541 {
1542         return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1543 }
1544
1545 int security_xfrm_state_alloc(struct xfrm_state *x,
1546                               struct xfrm_user_sec_ctx *sec_ctx)
1547 {
1548         return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1549 }
1550 EXPORT_SYMBOL(security_xfrm_state_alloc);
1551
1552 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1553                                       struct xfrm_sec_ctx *polsec, u32 secid)
1554 {
1555         return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1556 }
1557
1558 int security_xfrm_state_delete(struct xfrm_state *x)
1559 {
1560         return call_int_hook(xfrm_state_delete_security, 0, x);
1561 }
1562 EXPORT_SYMBOL(security_xfrm_state_delete);
1563
1564 void security_xfrm_state_free(struct xfrm_state *x)
1565 {
1566         call_void_hook(xfrm_state_free_security, x);
1567 }
1568
1569 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1570 {
1571         return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1572 }
1573
1574 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1575                                        struct xfrm_policy *xp,
1576                                        const struct flowi *fl)
1577 {
1578         struct security_hook_list *hp;
1579         int rc = 1;
1580
1581         /*
1582          * Since this function is expected to return 0 or 1, the judgment
1583          * becomes difficult if multiple LSMs supply this call. Fortunately,
1584          * we can use the first LSM's judgment because currently only SELinux
1585          * supplies this call.
1586          *
1587          * For speed optimization, we explicitly break the loop rather than
1588          * using the macro
1589          */
1590         list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1591                                 list) {
1592                 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1593                 break;
1594         }
1595         return rc;
1596 }
1597
1598 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1599 {
1600         return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1601 }
1602
1603 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1604 {
1605         int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1606                                 0);
1607
1608         BUG_ON(rc);
1609 }
1610 EXPORT_SYMBOL(security_skb_classify_flow);
1611
1612 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1613
1614 #ifdef CONFIG_KEYS
1615
1616 int security_key_alloc(struct key *key, const struct cred *cred,
1617                        unsigned long flags)
1618 {
1619         return call_int_hook(key_alloc, 0, key, cred, flags);
1620 }
1621
1622 void security_key_free(struct key *key)
1623 {
1624         call_void_hook(key_free, key);
1625 }
1626
1627 int security_key_permission(key_ref_t key_ref,
1628                             const struct cred *cred, unsigned perm)
1629 {
1630         return call_int_hook(key_permission, 0, key_ref, cred, perm);
1631 }
1632
1633 int security_key_getsecurity(struct key *key, char **_buffer)
1634 {
1635         *_buffer = NULL;
1636         return call_int_hook(key_getsecurity, 0, key, _buffer);
1637 }
1638
1639 #endif  /* CONFIG_KEYS */
1640
1641 #ifdef CONFIG_AUDIT
1642
1643 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1644 {
1645         return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1646 }
1647
1648 int security_audit_rule_known(struct audit_krule *krule)
1649 {
1650         return call_int_hook(audit_rule_known, 0, krule);
1651 }
1652
1653 void security_audit_rule_free(void *lsmrule)
1654 {
1655         call_void_hook(audit_rule_free, lsmrule);
1656 }
1657
1658 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1659                               struct audit_context *actx)
1660 {
1661         return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1662                                 actx);
1663 }
1664 #endif /* CONFIG_AUDIT */