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  * Copyright (C) 2016 Mellanox Technologies
   8  *
   9  *      This program is free software; you can redistribute it and/or modify
  10  *      it under the terms of the GNU General Public License as published by
  11  *      the Free Software Foundation; either version 2 of the License, or
  12  *      (at your option) any later version.
  13  */
  14
  15 #include <linux/capability.h>
  16 #include <linux/dcache.h>
  17 #include <linux/module.h>
  18 #include <linux/init.h>
  19 #include <linux/kernel.h>
  20 #include <linux/lsm_hooks.h>
  21 #include <linux/integrity.h>
  22 #include <linux/ima.h>
  23 #include <linux/evm.h>
  24 #include <linux/fsnotify.h>
  25 #include <linux/mman.h>
  26 #include <linux/mount.h>
  27 #include <linux/personality.h>
  28 #include <linux/backing-dev.h>
  29 #include <linux/string.h>
  30 #include <net/flow.h>
  31
  32 #define MAX_LSM_EVM_XATTR       2
  33
  34 /* Maximum number of letters for an LSM name string */
  35 #define SECURITY_NAME_MAX       10
  36
  37 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
  38 static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain);
  39
  40 char *lsm_names;
  41 /* Boot-time LSM user choice */
  42 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  43         CONFIG_DEFAULT_SECURITY;
  44
  45 static void __init do_security_initcalls(void)
  46 {
  47         initcall_t *call;
  48         call = __security_initcall_start;
  49         while (call < __security_initcall_end) {
  50                 (*call) ();
  51                 call++;
  52         }
  53 }
  54
  55 /**
  56  * security_init - initializes the security framework
  57  *
  58  * This should be called early in the kernel initialization sequence.
  59  */
  60 int __init security_init(void)
  61 {
  62         int i;
  63         struct list_head *list = (struct list_head *) &security_hook_heads;
  64
  65         for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head);
  66              i++)
  67                 INIT_LIST_HEAD(&list[i]);
  68         pr_info("Security Framework initialized\n");
  69
  70         /*
  71          * Load minor LSMs, with the capability module always first.
  72          */
  73         capability_add_hooks();
  74         yama_add_hooks();
  75         loadpin_add_hooks();
  76
  77         /*
  78          * Load all the remaining security modules.
  79          */
  80         do_security_initcalls();
  81
  82         return 0;
  83 }
  84
  85 /* Save user chosen LSM */
  86 static int __init choose_lsm(char *str)
  87 {
  88         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  89         return 1;
  90 }
  91 __setup("security=", choose_lsm);
  92
  93 static bool match_last_lsm(const char *list, const char *lsm)
  94 {
  95         const char *last;
  96
  97         if (WARN_ON(!list || !lsm))
  98                 return false;
  99         last = strrchr(list, ',');
 100         if (last)
 101                 /* Pass the comma, strcmp() will check for '\0' */
 102                 last++;
 103         else
 104                 last = list;
 105         return !strcmp(last, lsm);
 106 }
 107
 108 static int lsm_append(char *new, char **result)
 109 {
 110         char *cp;
 111
 112         if (*result == NULL) {
 113                 *result = kstrdup(new, GFP_KERNEL);
 114         } else {
 115                 /* Check if it is the last registered name */
 116                 if (match_last_lsm(*result, new))
 117                         return 0;
 118                 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
 119                 if (cp == NULL)
 120                         return -ENOMEM;
 121                 kfree(*result);
 122                 *result = cp;
 123         }
 124         return 0;
 125 }
 126
 127 /**
 128  * security_module_enable - Load given security module on boot ?
 129  * @module: the name of the module
 130  *
 131  * Each LSM must pass this method before registering its own operations
 132  * to avoid security registration races. This method may also be used
 133  * to check if your LSM is currently loaded during kernel initialization.
 134  *
 135  * Returns:
 136  *
 137  * true if:
 138  *
 139  * - The passed LSM is the one chosen by user at boot time,
 140  * - or the passed LSM is configured as the default and the user did not
 141  *   choose an alternate LSM at boot time.
 142  *
 143  * Otherwise, return false.
 144  */
 145 int __init security_module_enable(const char *module)
 146 {
 147         return !strcmp(module, chosen_lsm);
 148 }
 149
 150 /**
 151  * security_add_hooks - Add a modules hooks to the hook lists.
 152  * @hooks: the hooks to add
 153  * @count: the number of hooks to add
 154  * @lsm: the name of the security module
 155  *
 156  * Each LSM has to register its hooks with the infrastructure.
 157  */
 158 void __init security_add_hooks(struct security_hook_list *hooks, int count,
 159                                 char *lsm)
 160 {
 161         int i;
 162
 163         for (i = 0; i < count; i++) {
 164                 hooks[i].lsm = lsm;
 165                 list_add_tail_rcu(&hooks[i].list, hooks[i].head);
 166         }
 167         if (lsm_append(lsm, &lsm_names) < 0)
 168                 panic("%s - Cannot get early memory.\n", __func__);
 169 }
 170
 171 int call_lsm_notifier(enum lsm_event event, void *data)
 172 {
 173         return atomic_notifier_call_chain(&lsm_notifier_chain, event, data);
 174 }
 175 EXPORT_SYMBOL(call_lsm_notifier);
 176
 177 int register_lsm_notifier(struct notifier_block *nb)
 178 {
 179         return atomic_notifier_chain_register(&lsm_notifier_chain, nb);
 180 }
 181 EXPORT_SYMBOL(register_lsm_notifier);
 182
 183 int unregister_lsm_notifier(struct notifier_block *nb)
 184 {
 185         return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb);
 186 }
 187 EXPORT_SYMBOL(unregister_lsm_notifier);
 188
 189 /*
 190  * Hook list operation macros.
 191  *
 192  * call_void_hook:
 193  *      This is a hook that does not return a value.
 194  *
 195  * call_int_hook:
 196  *      This is a hook that returns a value.
 197  */
 198
 199 #define call_void_hook(FUNC, ...)                               \
 200         do {                                                    \
 201                 struct security_hook_list *P;                   \
 202                                                                 \
 203                 list_for_each_entry(P, &security_hook_heads.FUNC, list) \
 204                         P->hook.FUNC(__VA_ARGS__);              \
 205         } while (0)
 206
 207 #define call_int_hook(FUNC, IRC, ...) ({                        \
 208         int RC = IRC;                                           \
 209         do {                                                    \
 210                 struct security_hook_list *P;                   \
 211                                                                 \
 212                 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
 213                         RC = P->hook.FUNC(__VA_ARGS__);         \
 214                         if (RC != 0)                            \
 215                                 break;                          \
 216                 }                                               \
 217         } while (0);                                            \
 218         RC;                                                     \
 219 })
 220
 221 /* Security operations */
 222
 223 int security_binder_set_context_mgr(struct task_struct *mgr)
 224 {
 225         return call_int_hook(binder_set_context_mgr, 0, mgr);
 226 }
 227
 228 int security_binder_transaction(struct task_struct *from,
 229                                 struct task_struct *to)
 230 {
 231         return call_int_hook(binder_transaction, 0, from, to);
 232 }
 233
 234 int security_binder_transfer_binder(struct task_struct *from,
 235                                     struct task_struct *to)
 236 {
 237         return call_int_hook(binder_transfer_binder, 0, from, to);
 238 }
 239
 240 int security_binder_transfer_file(struct task_struct *from,
 241                                   struct task_struct *to, struct file *file)
 242 {
 243         return call_int_hook(binder_transfer_file, 0, from, to, file);
 244 }
 245
 246 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 247 {
 248         return call_int_hook(ptrace_access_check, 0, child, mode);
 249 }
 250
 251 int security_ptrace_traceme(struct task_struct *parent)
 252 {
 253         return call_int_hook(ptrace_traceme, 0, parent);
 254 }
 255
 256 int security_capget(struct task_struct *target,
 257                      kernel_cap_t *effective,
 258                      kernel_cap_t *inheritable,
 259                      kernel_cap_t *permitted)
 260 {
 261         return call_int_hook(capget, 0, target,
 262                                 effective, inheritable, permitted);
 263 }
 264
 265 int security_capset(struct cred *new, const struct cred *old,
 266                     const kernel_cap_t *effective,
 267                     const kernel_cap_t *inheritable,
 268                     const kernel_cap_t *permitted)
 269 {
 270         return call_int_hook(capset, 0, new, old,
 271                                 effective, inheritable, permitted);
 272 }
 273
 274 int security_capable(const struct cred *cred, struct user_namespace *ns,
 275                      int cap)
 276 {
 277         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
 278 }
 279
 280 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 281                              int cap)
 282 {
 283         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
 284 }
 285
 286 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 287 {
 288         return call_int_hook(quotactl, 0, cmds, type, id, sb);
 289 }
 290
 291 int security_quota_on(struct dentry *dentry)
 292 {
 293         return call_int_hook(quota_on, 0, dentry);
 294 }
 295
 296 int security_syslog(int type)
 297 {
 298         return call_int_hook(syslog, 0, type);
 299 }
 300
 301 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
 302 {
 303         return call_int_hook(settime, 0, ts, tz);
 304 }
 305
 306 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 307 {
 308         struct security_hook_list *hp;
 309         int cap_sys_admin = 1;
 310         int rc;
 311
 312         /*
 313          * The module will respond with a positive value if
 314          * it thinks the __vm_enough_memory() call should be
 315          * made with the cap_sys_admin set. If all of the modules
 316          * agree that it should be set it will. If any module
 317          * thinks it should not be set it won't.
 318          */
 319         list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
 320                 rc = hp->hook.vm_enough_memory(mm, pages);
 321                 if (rc <= 0) {
 322                         cap_sys_admin = 0;
 323                         break;
 324                 }
 325         }
 326         return __vm_enough_memory(mm, pages, cap_sys_admin);
 327 }
 328
 329 int security_bprm_set_creds(struct linux_binprm *bprm)
 330 {
 331         return call_int_hook(bprm_set_creds, 0, bprm);
 332 }
 333
 334 int security_bprm_check(struct linux_binprm *bprm)
 335 {
 336         int ret;
 337
 338         ret = call_int_hook(bprm_check_security, 0, bprm);
 339         if (ret)
 340                 return ret;
 341         return ima_bprm_check(bprm);
 342 }
 343
 344 void security_bprm_committing_creds(struct linux_binprm *bprm)
 345 {
 346         call_void_hook(bprm_committing_creds, bprm);
 347 }
 348
 349 void security_bprm_committed_creds(struct linux_binprm *bprm)
 350 {
 351         call_void_hook(bprm_committed_creds, bprm);
 352 }
 353
 354 int security_sb_alloc(struct super_block *sb)
 355 {
 356         return call_int_hook(sb_alloc_security, 0, sb);
 357 }
 358
 359 void security_sb_free(struct super_block *sb)
 360 {
 361         call_void_hook(sb_free_security, sb);
 362 }
 363
 364 int security_sb_copy_data(char *orig, char *copy)
 365 {
 366         return call_int_hook(sb_copy_data, 0, orig, copy);
 367 }
 368 EXPORT_SYMBOL(security_sb_copy_data);
 369
 370 int security_sb_remount(struct super_block *sb, void *data)
 371 {
 372         return call_int_hook(sb_remount, 0, sb, data);
 373 }
 374
 375 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 376 {
 377         return call_int_hook(sb_kern_mount, 0, sb, flags, data);
 378 }
 379
 380 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 381 {
 382         return call_int_hook(sb_show_options, 0, m, sb);
 383 }
 384
 385 int security_sb_statfs(struct dentry *dentry)
 386 {
 387         return call_int_hook(sb_statfs, 0, dentry);
 388 }
 389
 390 int security_sb_mount(const char *dev_name, const struct path *path,
 391                        const char *type, unsigned long flags, void *data)
 392 {
 393         return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
 394 }
 395
 396 int security_sb_umount(struct vfsmount *mnt, int flags)
 397 {
 398         return call_int_hook(sb_umount, 0, mnt, flags);
 399 }
 400
 401 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
 402 {
 403         return call_int_hook(sb_pivotroot, 0, old_path, new_path);
 404 }
 405
 406 int security_sb_set_mnt_opts(struct super_block *sb,
 407                                 struct security_mnt_opts *opts,
 408                                 unsigned long kern_flags,
 409                                 unsigned long *set_kern_flags)
 410 {
 411         return call_int_hook(sb_set_mnt_opts,
 412                                 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
 413                                 opts, kern_flags, set_kern_flags);
 414 }
 415 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 416
 417 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 418                                 struct super_block *newsb,
 419                                 unsigned long kern_flags,
 420                                 unsigned long *set_kern_flags)
 421 {
 422         return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
 423                                 kern_flags, set_kern_flags);
 424 }
 425 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 426
 427 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 428 {
 429         return call_int_hook(sb_parse_opts_str, 0, options, opts);
 430 }
 431 EXPORT_SYMBOL(security_sb_parse_opts_str);
 432
 433 int security_inode_alloc(struct inode *inode)
 434 {
 435         inode->i_security = NULL;
 436         return call_int_hook(inode_alloc_security, 0, inode);
 437 }
 438
 439 void security_inode_free(struct inode *inode)
 440 {
 441         integrity_inode_free(inode);
 442         call_void_hook(inode_free_security, inode);
 443 }
 444
 445 int security_dentry_init_security(struct dentry *dentry, int mode,
 446                                         const struct qstr *name, void **ctx,
 447                                         u32 *ctxlen)
 448 {
 449         return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
 450                                 name, ctx, ctxlen);
 451 }
 452 EXPORT_SYMBOL(security_dentry_init_security);
 453
 454 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 455                                     struct qstr *name,
 456                                     const struct cred *old, struct cred *new)
 457 {
 458         return call_int_hook(dentry_create_files_as, 0, dentry, mode,
 459                                 name, old, new);
 460 }
 461 EXPORT_SYMBOL(security_dentry_create_files_as);
 462
 463 int security_inode_init_security(struct inode *inode, struct inode *dir,
 464                                  const struct qstr *qstr,
 465                                  const initxattrs initxattrs, void *fs_data)
 466 {
 467         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
 468         struct xattr *lsm_xattr, *evm_xattr, *xattr;
 469         int ret;
 470
 471         if (unlikely(IS_PRIVATE(inode)))
 472                 return 0;
 473
 474         if (!initxattrs)
 475                 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
 476                                      dir, qstr, NULL, NULL, NULL);
 477         memset(new_xattrs, 0, sizeof(new_xattrs));
 478         lsm_xattr = new_xattrs;
 479         ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
 480                                                 &lsm_xattr->name,
 481                                                 &lsm_xattr->value,
 482                                                 &lsm_xattr->value_len);
 483         if (ret)
 484                 goto out;
 485
 486         evm_xattr = lsm_xattr + 1;
 487         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
 488         if (ret)
 489                 goto out;
 490         ret = initxattrs(inode, new_xattrs, fs_data);
 491 out:
 492         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
 493                 kfree(xattr->value);
 494         return (ret == -EOPNOTSUPP) ? 0 : ret;
 495 }
 496 EXPORT_SYMBOL(security_inode_init_security);
 497
 498 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 499                                      const struct qstr *qstr, const char **name,
 500                                      void **value, size_t *len)
 501 {
 502         if (unlikely(IS_PRIVATE(inode)))
 503                 return -EOPNOTSUPP;
 504         return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
 505                              qstr, name, value, len);
 506 }
 507 EXPORT_SYMBOL(security_old_inode_init_security);
 508
 509 #ifdef CONFIG_SECURITY_PATH
 510 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
 511                         unsigned int dev)
 512 {
 513         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 514                 return 0;
 515         return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
 516 }
 517 EXPORT_SYMBOL(security_path_mknod);
 518
 519 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
 520 {
 521         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 522                 return 0;
 523         return call_int_hook(path_mkdir, 0, dir, dentry, mode);
 524 }
 525 EXPORT_SYMBOL(security_path_mkdir);
 526
 527 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
 528 {
 529         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 530                 return 0;
 531         return call_int_hook(path_rmdir, 0, dir, dentry);
 532 }
 533
 534 int security_path_unlink(const struct path *dir, struct dentry *dentry)
 535 {
 536         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 537                 return 0;
 538         return call_int_hook(path_unlink, 0, dir, dentry);
 539 }
 540 EXPORT_SYMBOL(security_path_unlink);
 541
 542 int security_path_symlink(const struct path *dir, struct dentry *dentry,
 543                           const char *old_name)
 544 {
 545         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 546                 return 0;
 547         return call_int_hook(path_symlink, 0, dir, dentry, old_name);
 548 }
 549
 550 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
 551                        struct dentry *new_dentry)
 552 {
 553         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 554                 return 0;
 555         return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
 556 }
 557
 558 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
 559                          const struct path *new_dir, struct dentry *new_dentry,
 560                          unsigned int flags)
 561 {
 562         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 563                      (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 564                 return 0;
 565
 566         if (flags & RENAME_EXCHANGE) {
 567                 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
 568                                         old_dir, old_dentry);
 569                 if (err)
 570                         return err;
 571         }
 572
 573         return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
 574                                 new_dentry);
 575 }
 576 EXPORT_SYMBOL(security_path_rename);
 577
 578 int security_path_truncate(const struct path *path)
 579 {
 580         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 581                 return 0;
 582         return call_int_hook(path_truncate, 0, path);
 583 }
 584
 585 int security_path_chmod(const struct path *path, umode_t mode)
 586 {
 587         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 588                 return 0;
 589         return call_int_hook(path_chmod, 0, path, mode);
 590 }
 591
 592 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 593 {
 594         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 595                 return 0;
 596         return call_int_hook(path_chown, 0, path, uid, gid);
 597 }
 598
 599 int security_path_chroot(const struct path *path)
 600 {
 601         return call_int_hook(path_chroot, 0, path);
 602 }
 603 #endif
 604
 605 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
 606 {
 607         if (unlikely(IS_PRIVATE(dir)))
 608                 return 0;
 609         return call_int_hook(inode_create, 0, dir, dentry, mode);
 610 }
 611 EXPORT_SYMBOL_GPL(security_inode_create);
 612
 613 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 614                          struct dentry *new_dentry)
 615 {
 616         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 617                 return 0;
 618         return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
 619 }
 620
 621 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 622 {
 623         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 624                 return 0;
 625         return call_int_hook(inode_unlink, 0, dir, dentry);
 626 }
 627
 628 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 629                             const char *old_name)
 630 {
 631         if (unlikely(IS_PRIVATE(dir)))
 632                 return 0;
 633         return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
 634 }
 635
 636 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 637 {
 638         if (unlikely(IS_PRIVATE(dir)))
 639                 return 0;
 640         return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
 641 }
 642 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 643
 644 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 645 {
 646         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 647                 return 0;
 648         return call_int_hook(inode_rmdir, 0, dir, dentry);
 649 }
 650
 651 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
 652 {
 653         if (unlikely(IS_PRIVATE(dir)))
 654                 return 0;
 655         return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
 656 }
 657
 658 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 659                            struct inode *new_dir, struct dentry *new_dentry,
 660                            unsigned int flags)
 661 {
 662         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 663             (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 664                 return 0;
 665
 666         if (flags & RENAME_EXCHANGE) {
 667                 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
 668                                                      old_dir, old_dentry);
 669                 if (err)
 670                         return err;
 671         }
 672
 673         return call_int_hook(inode_rename, 0, old_dir, old_dentry,
 674                                            new_dir, new_dentry);
 675 }
 676
 677 int security_inode_readlink(struct dentry *dentry)
 678 {
 679         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 680                 return 0;
 681         return call_int_hook(inode_readlink, 0, dentry);
 682 }
 683
 684 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 685                                bool rcu)
 686 {
 687         if (unlikely(IS_PRIVATE(inode)))
 688                 return 0;
 689         return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
 690 }
 691
 692 int security_inode_permission(struct inode *inode, int mask)
 693 {
 694         if (unlikely(IS_PRIVATE(inode)))
 695                 return 0;
 696         return call_int_hook(inode_permission, 0, inode, mask);
 697 }
 698
 699 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 700 {
 701         int ret;
 702
 703         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 704                 return 0;
 705         ret = call_int_hook(inode_setattr, 0, dentry, attr);
 706         if (ret)
 707                 return ret;
 708         return evm_inode_setattr(dentry, attr);
 709 }
 710 EXPORT_SYMBOL_GPL(security_inode_setattr);
 711
 712 int security_inode_getattr(const struct path *path)
 713 {
 714         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 715                 return 0;
 716         return call_int_hook(inode_getattr, 0, path);
 717 }
 718
 719 int security_inode_setxattr(struct dentry *dentry, const char *name,
 720                             const void *value, size_t size, int flags)
 721 {
 722         int ret;
 723
 724         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 725                 return 0;
 726         /*
 727          * SELinux and Smack integrate the cap call,
 728          * so assume that all LSMs supplying this call do so.
 729          */
 730         ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
 731                                 flags);
 732
 733         if (ret == 1)
 734                 ret = cap_inode_setxattr(dentry, name, value, size, flags);
 735         if (ret)
 736                 return ret;
 737         ret = ima_inode_setxattr(dentry, name, value, size);
 738         if (ret)
 739                 return ret;
 740         return evm_inode_setxattr(dentry, name, value, size);
 741 }
 742
 743 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 744                                   const void *value, size_t size, int flags)
 745 {
 746         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 747                 return;
 748         call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
 749         evm_inode_post_setxattr(dentry, name, value, size);
 750 }
 751
 752 int security_inode_getxattr(struct dentry *dentry, const char *name)
 753 {
 754         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 755                 return 0;
 756         return call_int_hook(inode_getxattr, 0, dentry, name);
 757 }
 758
 759 int security_inode_listxattr(struct dentry *dentry)
 760 {
 761         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 762                 return 0;
 763         return call_int_hook(inode_listxattr, 0, dentry);
 764 }
 765
 766 int security_inode_removexattr(struct dentry *dentry, const char *name)
 767 {
 768         int ret;
 769
 770         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 771                 return 0;
 772         /*
 773          * SELinux and Smack integrate the cap call,
 774          * so assume that all LSMs supplying this call do so.
 775          */
 776         ret = call_int_hook(inode_removexattr, 1, dentry, name);
 777         if (ret == 1)
 778                 ret = cap_inode_removexattr(dentry, name);
 779         if (ret)
 780                 return ret;
 781         ret = ima_inode_removexattr(dentry, name);
 782         if (ret)
 783                 return ret;
 784         return evm_inode_removexattr(dentry, name);
 785 }
 786
 787 int security_inode_need_killpriv(struct dentry *dentry)
 788 {
 789         return call_int_hook(inode_need_killpriv, 0, dentry);
 790 }
 791
 792 int security_inode_killpriv(struct dentry *dentry)
 793 {
 794         return call_int_hook(inode_killpriv, 0, dentry);
 795 }
 796
 797 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 798 {
 799         struct security_hook_list *hp;
 800         int rc;
 801
 802         if (unlikely(IS_PRIVATE(inode)))
 803                 return -EOPNOTSUPP;
 804         /*
 805          * Only one module will provide an attribute with a given name.
 806          */
 807         list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
 808                 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
 809                 if (rc != -EOPNOTSUPP)
 810                         return rc;
 811         }
 812         return -EOPNOTSUPP;
 813 }
 814
 815 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 816 {
 817         struct security_hook_list *hp;
 818         int rc;
 819
 820         if (unlikely(IS_PRIVATE(inode)))
 821                 return -EOPNOTSUPP;
 822         /*
 823          * Only one module will provide an attribute with a given name.
 824          */
 825         list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
 826                 rc = hp->hook.inode_setsecurity(inode, name, value, size,
 827                                                                 flags);
 828                 if (rc != -EOPNOTSUPP)
 829                         return rc;
 830         }
 831         return -EOPNOTSUPP;
 832 }
 833
 834 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 835 {
 836         if (unlikely(IS_PRIVATE(inode)))
 837                 return 0;
 838         return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
 839 }
 840 EXPORT_SYMBOL(security_inode_listsecurity);
 841
 842 void security_inode_getsecid(struct inode *inode, u32 *secid)
 843 {
 844         call_void_hook(inode_getsecid, inode, secid);
 845 }
 846
 847 int security_inode_copy_up(struct dentry *src, struct cred **new)
 848 {
 849         return call_int_hook(inode_copy_up, 0, src, new);
 850 }
 851 EXPORT_SYMBOL(security_inode_copy_up);
 852
 853 int security_inode_copy_up_xattr(const char *name)
 854 {
 855         return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
 856 }
 857 EXPORT_SYMBOL(security_inode_copy_up_xattr);
 858
 859 int security_file_permission(struct file *file, int mask)
 860 {
 861         int ret;
 862
 863         ret = call_int_hook(file_permission, 0, file, mask);
 864         if (ret)
 865                 return ret;
 866
 867         return fsnotify_perm(file, mask);
 868 }
 869
 870 int security_file_alloc(struct file *file)
 871 {
 872         return call_int_hook(file_alloc_security, 0, file);
 873 }
 874
 875 void security_file_free(struct file *file)
 876 {
 877         call_void_hook(file_free_security, file);
 878 }
 879
 880 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 881 {
 882         return call_int_hook(file_ioctl, 0, file, cmd, arg);
 883 }
 884
 885 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
 886 {
 887         /*
 888          * Does we have PROT_READ and does the application expect
 889          * it to imply PROT_EXEC?  If not, nothing to talk about...
 890          */
 891         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
 892                 return prot;
 893         if (!(current->personality & READ_IMPLIES_EXEC))
 894                 return prot;
 895         /*
 896          * if that's an anonymous mapping, let it.
 897          */
 898         if (!file)
 899                 return prot | PROT_EXEC;
 900         /*
 901          * ditto if it's not on noexec mount, except that on !MMU we need
 902          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
 903          */
 904         if (!path_noexec(&file->f_path)) {
 905 #ifndef CONFIG_MMU
 906                 if (file->f_op->mmap_capabilities) {
 907                         unsigned caps = file->f_op->mmap_capabilities(file);
 908                         if (!(caps & NOMMU_MAP_EXEC))
 909                                 return prot;
 910                 }
 911 #endif
 912                 return prot | PROT_EXEC;
 913         }
 914         /* anything on noexec mount won't get PROT_EXEC */
 915         return prot;
 916 }
 917
 918 int security_mmap_file(struct file *file, unsigned long prot,
 919                         unsigned long flags)
 920 {
 921         int ret;
 922         ret = call_int_hook(mmap_file, 0, file, prot,
 923                                         mmap_prot(file, prot), flags);
 924         if (ret)
 925                 return ret;
 926         return ima_file_mmap(file, prot);
 927 }
 928
 929 int security_mmap_addr(unsigned long addr)
 930 {
 931         return call_int_hook(mmap_addr, 0, addr);
 932 }
 933
 934 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 935                             unsigned long prot)
 936 {
 937         return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
 938 }
 939
 940 int security_file_lock(struct file *file, unsigned int cmd)
 941 {
 942         return call_int_hook(file_lock, 0, file, cmd);
 943 }
 944
 945 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 946 {
 947         return call_int_hook(file_fcntl, 0, file, cmd, arg);
 948 }
 949
 950 void security_file_set_fowner(struct file *file)
 951 {
 952         call_void_hook(file_set_fowner, file);
 953 }
 954
 955 int security_file_send_sigiotask(struct task_struct *tsk,
 956                                   struct fown_struct *fown, int sig)
 957 {
 958         return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
 959 }
 960
 961 int security_file_receive(struct file *file)
 962 {
 963         return call_int_hook(file_receive, 0, file);
 964 }
 965
 966 int security_file_open(struct file *file, const struct cred *cred)
 967 {
 968         int ret;
 969
 970         ret = call_int_hook(file_open, 0, file, cred);
 971         if (ret)
 972                 return ret;
 973
 974         return fsnotify_perm(file, MAY_OPEN);
 975 }
 976
 977 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
 978 {
 979         return call_int_hook(task_alloc, 0, task, clone_flags);
 980 }
 981
 982 void security_task_free(struct task_struct *task)
 983 {
 984         call_void_hook(task_free, task);
 985 }
 986
 987 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 988 {
 989         return call_int_hook(cred_alloc_blank, 0, cred, gfp);
 990 }
 991
 992 void security_cred_free(struct cred *cred)
 993 {
 994         call_void_hook(cred_free, cred);
 995 }
 996
 997 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
 998 {
 999         return call_int_hook(cred_prepare, 0, new, old, gfp);
1000 }
1001
1002 void security_transfer_creds(struct cred *new, const struct cred *old)
1003 {
1004         call_void_hook(cred_transfer, new, old);
1005 }
1006
1007 int security_kernel_act_as(struct cred *new, u32 secid)
1008 {
1009         return call_int_hook(kernel_act_as, 0, new, secid);
1010 }
1011
1012 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1013 {
1014         return call_int_hook(kernel_create_files_as, 0, new, inode);
1015 }
1016
1017 int security_kernel_module_request(char *kmod_name)
1018 {
1019         return call_int_hook(kernel_module_request, 0, kmod_name);
1020 }
1021
1022 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1023 {
1024         int ret;
1025
1026         ret = call_int_hook(kernel_read_file, 0, file, id);
1027         if (ret)
1028                 return ret;
1029         return ima_read_file(file, id);
1030 }
1031 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1032
1033 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1034                                    enum kernel_read_file_id id)
1035 {
1036         int ret;
1037
1038         ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1039         if (ret)
1040                 return ret;
1041         return ima_post_read_file(file, buf, size, id);
1042 }
1043 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1044
1045 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1046                              int flags)
1047 {
1048         return call_int_hook(task_fix_setuid, 0, new, old, flags);
1049 }
1050
1051 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1052 {
1053         return call_int_hook(task_setpgid, 0, p, pgid);
1054 }
1055
1056 int security_task_getpgid(struct task_struct *p)
1057 {
1058         return call_int_hook(task_getpgid, 0, p);
1059 }
1060
1061 int security_task_getsid(struct task_struct *p)
1062 {
1063         return call_int_hook(task_getsid, 0, p);
1064 }
1065
1066 void security_task_getsecid(struct task_struct *p, u32 *secid)
1067 {
1068         *secid = 0;
1069         call_void_hook(task_getsecid, p, secid);
1070 }
1071 EXPORT_SYMBOL(security_task_getsecid);
1072
1073 int security_task_setnice(struct task_struct *p, int nice)
1074 {
1075         return call_int_hook(task_setnice, 0, p, nice);
1076 }
1077
1078 int security_task_setioprio(struct task_struct *p, int ioprio)
1079 {
1080         return call_int_hook(task_setioprio, 0, p, ioprio);
1081 }
1082
1083 int security_task_getioprio(struct task_struct *p)
1084 {
1085         return call_int_hook(task_getioprio, 0, p);
1086 }
1087
1088 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1089                           unsigned int flags)
1090 {
1091         return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1092 }
1093
1094 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1095                 struct rlimit *new_rlim)
1096 {
1097         return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1098 }
1099
1100 int security_task_setscheduler(struct task_struct *p)
1101 {
1102         return call_int_hook(task_setscheduler, 0, p);
1103 }
1104
1105 int security_task_getscheduler(struct task_struct *p)
1106 {
1107         return call_int_hook(task_getscheduler, 0, p);
1108 }
1109
1110 int security_task_movememory(struct task_struct *p)
1111 {
1112         return call_int_hook(task_movememory, 0, p);
1113 }
1114
1115 int security_task_kill(struct task_struct *p, struct siginfo *info,
1116                         int sig, u32 secid)
1117 {
1118         return call_int_hook(task_kill, 0, p, info, sig, secid);
1119 }
1120
1121 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1122                          unsigned long arg4, unsigned long arg5)
1123 {
1124         int thisrc;
1125         int rc = -ENOSYS;
1126         struct security_hook_list *hp;
1127
1128         list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1129                 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1130                 if (thisrc != -ENOSYS) {
1131                         rc = thisrc;
1132                         if (thisrc != 0)
1133                                 break;
1134                 }
1135         }
1136         return rc;
1137 }
1138
1139 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1140 {
1141         call_void_hook(task_to_inode, p, inode);
1142 }
1143
1144 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1145 {
1146         return call_int_hook(ipc_permission, 0, ipcp, flag);
1147 }
1148
1149 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1150 {
1151         *secid = 0;
1152         call_void_hook(ipc_getsecid, ipcp, secid);
1153 }
1154
1155 int security_msg_msg_alloc(struct msg_msg *msg)
1156 {
1157         return call_int_hook(msg_msg_alloc_security, 0, msg);
1158 }
1159
1160 void security_msg_msg_free(struct msg_msg *msg)
1161 {
1162         call_void_hook(msg_msg_free_security, msg);
1163 }
1164
1165 int security_msg_queue_alloc(struct msg_queue *msq)
1166 {
1167         return call_int_hook(msg_queue_alloc_security, 0, msq);
1168 }
1169
1170 void security_msg_queue_free(struct msg_queue *msq)
1171 {
1172         call_void_hook(msg_queue_free_security, msq);
1173 }
1174
1175 int security_msg_queue_associate(struct msg_queue *msq, int msqflg)
1176 {
1177         return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1178 }
1179
1180 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd)
1181 {
1182         return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1183 }
1184
1185 int security_msg_queue_msgsnd(struct msg_queue *msq,
1186                                struct msg_msg *msg, int msqflg)
1187 {
1188         return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1189 }
1190
1191 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg,
1192                                struct task_struct *target, long type, int mode)
1193 {
1194         return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1195 }
1196
1197 int security_shm_alloc(struct shmid_kernel *shp)
1198 {
1199         return call_int_hook(shm_alloc_security, 0, shp);
1200 }
1201
1202 void security_shm_free(struct shmid_kernel *shp)
1203 {
1204         call_void_hook(shm_free_security, shp);
1205 }
1206
1207 int security_shm_associate(struct shmid_kernel *shp, int shmflg)
1208 {
1209         return call_int_hook(shm_associate, 0, shp, shmflg);
1210 }
1211
1212 int security_shm_shmctl(struct shmid_kernel *shp, int cmd)
1213 {
1214         return call_int_hook(shm_shmctl, 0, shp, cmd);
1215 }
1216
1217 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg)
1218 {
1219         return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1220 }
1221
1222 int security_sem_alloc(struct sem_array *sma)
1223 {
1224         return call_int_hook(sem_alloc_security, 0, sma);
1225 }
1226
1227 void security_sem_free(struct sem_array *sma)
1228 {
1229         call_void_hook(sem_free_security, sma);
1230 }
1231
1232 int security_sem_associate(struct sem_array *sma, int semflg)
1233 {
1234         return call_int_hook(sem_associate, 0, sma, semflg);
1235 }
1236
1237 int security_sem_semctl(struct sem_array *sma, int cmd)
1238 {
1239         return call_int_hook(sem_semctl, 0, sma, cmd);
1240 }
1241
1242 int security_sem_semop(struct sem_array *sma, struct sembuf *sops,
1243                         unsigned nsops, int alter)
1244 {
1245         return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1246 }
1247
1248 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1249 {
1250         if (unlikely(inode && IS_PRIVATE(inode)))
1251                 return;
1252         call_void_hook(d_instantiate, dentry, inode);
1253 }
1254 EXPORT_SYMBOL(security_d_instantiate);
1255
1256 int security_getprocattr(struct task_struct *p, char *name, char **value)
1257 {
1258         return call_int_hook(getprocattr, -EINVAL, p, name, value);
1259 }
1260
1261 int security_setprocattr(const char *name, void *value, size_t size)
1262 {
1263         return call_int_hook(setprocattr, -EINVAL, name, value, size);
1264 }
1265
1266 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1267 {
1268         return call_int_hook(netlink_send, 0, sk, skb);
1269 }
1270
1271 int security_ismaclabel(const char *name)
1272 {
1273         return call_int_hook(ismaclabel, 0, name);
1274 }
1275 EXPORT_SYMBOL(security_ismaclabel);
1276
1277 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1278 {
1279         return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1280                                 seclen);
1281 }
1282 EXPORT_SYMBOL(security_secid_to_secctx);
1283
1284 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1285 {
1286         *secid = 0;
1287         return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1288 }
1289 EXPORT_SYMBOL(security_secctx_to_secid);
1290
1291 void security_release_secctx(char *secdata, u32 seclen)
1292 {
1293         call_void_hook(release_secctx, secdata, seclen);
1294 }
1295 EXPORT_SYMBOL(security_release_secctx);
1296
1297 void security_inode_invalidate_secctx(struct inode *inode)
1298 {
1299         call_void_hook(inode_invalidate_secctx, inode);
1300 }
1301 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1302
1303 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1304 {
1305         return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1306 }
1307 EXPORT_SYMBOL(security_inode_notifysecctx);
1308
1309 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1310 {
1311         return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1312 }
1313 EXPORT_SYMBOL(security_inode_setsecctx);
1314
1315 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1316 {
1317         return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1318 }
1319 EXPORT_SYMBOL(security_inode_getsecctx);
1320
1321 #ifdef CONFIG_SECURITY_NETWORK
1322
1323 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1324 {
1325         return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1326 }
1327 EXPORT_SYMBOL(security_unix_stream_connect);
1328
1329 int security_unix_may_send(struct socket *sock,  struct socket *other)
1330 {
1331         return call_int_hook(unix_may_send, 0, sock, other);
1332 }
1333 EXPORT_SYMBOL(security_unix_may_send);
1334
1335 int security_socket_create(int family, int type, int protocol, int kern)
1336 {
1337         return call_int_hook(socket_create, 0, family, type, protocol, kern);
1338 }
1339
1340 int security_socket_post_create(struct socket *sock, int family,
1341                                 int type, int protocol, int kern)
1342 {
1343         return call_int_hook(socket_post_create, 0, sock, family, type,
1344                                                 protocol, kern);
1345 }
1346
1347 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1348 {
1349         return call_int_hook(socket_bind, 0, sock, address, addrlen);
1350 }
1351
1352 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1353 {
1354         return call_int_hook(socket_connect, 0, sock, address, addrlen);
1355 }
1356
1357 int security_socket_listen(struct socket *sock, int backlog)
1358 {
1359         return call_int_hook(socket_listen, 0, sock, backlog);
1360 }
1361
1362 int security_socket_accept(struct socket *sock, struct socket *newsock)
1363 {
1364         return call_int_hook(socket_accept, 0, sock, newsock);
1365 }
1366
1367 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1368 {
1369         return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1370 }
1371
1372 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1373                             int size, int flags)
1374 {
1375         return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1376 }
1377
1378 int security_socket_getsockname(struct socket *sock)
1379 {
1380         return call_int_hook(socket_getsockname, 0, sock);
1381 }
1382
1383 int security_socket_getpeername(struct socket *sock)
1384 {
1385         return call_int_hook(socket_getpeername, 0, sock);
1386 }
1387
1388 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1389 {
1390         return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1391 }
1392
1393 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1394 {
1395         return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1396 }
1397
1398 int security_socket_shutdown(struct socket *sock, int how)
1399 {
1400         return call_int_hook(socket_shutdown, 0, sock, how);
1401 }
1402
1403 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1404 {
1405         return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1406 }
1407 EXPORT_SYMBOL(security_sock_rcv_skb);
1408
1409 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1410                                       int __user *optlen, unsigned len)
1411 {
1412         return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1413                                 optval, optlen, len);
1414 }
1415
1416 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1417 {
1418         return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1419                              skb, secid);
1420 }
1421 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1422
1423 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1424 {
1425         return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1426 }
1427
1428 void security_sk_free(struct sock *sk)
1429 {
1430         call_void_hook(sk_free_security, sk);
1431 }
1432
1433 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1434 {
1435         call_void_hook(sk_clone_security, sk, newsk);
1436 }
1437 EXPORT_SYMBOL(security_sk_clone);
1438
1439 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1440 {
1441         call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1442 }
1443 EXPORT_SYMBOL(security_sk_classify_flow);
1444
1445 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1446 {
1447         call_void_hook(req_classify_flow, req, fl);
1448 }
1449 EXPORT_SYMBOL(security_req_classify_flow);
1450
1451 void security_sock_graft(struct sock *sk, struct socket *parent)
1452 {
1453         call_void_hook(sock_graft, sk, parent);
1454 }
1455 EXPORT_SYMBOL(security_sock_graft);
1456
1457 int security_inet_conn_request(struct sock *sk,
1458                         struct sk_buff *skb, struct request_sock *req)
1459 {
1460         return call_int_hook(inet_conn_request, 0, sk, skb, req);
1461 }
1462 EXPORT_SYMBOL(security_inet_conn_request);
1463
1464 void security_inet_csk_clone(struct sock *newsk,
1465                         const struct request_sock *req)
1466 {
1467         call_void_hook(inet_csk_clone, newsk, req);
1468 }
1469
1470 void security_inet_conn_established(struct sock *sk,
1471                         struct sk_buff *skb)
1472 {
1473         call_void_hook(inet_conn_established, sk, skb);
1474 }
1475
1476 int security_secmark_relabel_packet(u32 secid)
1477 {
1478         return call_int_hook(secmark_relabel_packet, 0, secid);
1479 }
1480 EXPORT_SYMBOL(security_secmark_relabel_packet);
1481
1482 void security_secmark_refcount_inc(void)
1483 {
1484         call_void_hook(secmark_refcount_inc);
1485 }
1486 EXPORT_SYMBOL(security_secmark_refcount_inc);
1487
1488 void security_secmark_refcount_dec(void)
1489 {
1490         call_void_hook(secmark_refcount_dec);
1491 }
1492 EXPORT_SYMBOL(security_secmark_refcount_dec);
1493
1494 int security_tun_dev_alloc_security(void **security)
1495 {
1496         return call_int_hook(tun_dev_alloc_security, 0, security);
1497 }
1498 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1499
1500 void security_tun_dev_free_security(void *security)
1501 {
1502         call_void_hook(tun_dev_free_security, security);
1503 }
1504 EXPORT_SYMBOL(security_tun_dev_free_security);
1505
1506 int security_tun_dev_create(void)
1507 {
1508         return call_int_hook(tun_dev_create, 0);
1509 }
1510 EXPORT_SYMBOL(security_tun_dev_create);
1511
1512 int security_tun_dev_attach_queue(void *security)
1513 {
1514         return call_int_hook(tun_dev_attach_queue, 0, security);
1515 }
1516 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1517
1518 int security_tun_dev_attach(struct sock *sk, void *security)
1519 {
1520         return call_int_hook(tun_dev_attach, 0, sk, security);
1521 }
1522 EXPORT_SYMBOL(security_tun_dev_attach);
1523
1524 int security_tun_dev_open(void *security)
1525 {
1526         return call_int_hook(tun_dev_open, 0, security);
1527 }
1528 EXPORT_SYMBOL(security_tun_dev_open);
1529
1530 #endif  /* CONFIG_SECURITY_NETWORK */
1531
1532 #ifdef CONFIG_SECURITY_INFINIBAND
1533
1534 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1535 {
1536         return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
1537 }
1538 EXPORT_SYMBOL(security_ib_pkey_access);
1539
1540 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1541 {
1542         return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
1543 }
1544 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
1545
1546 int security_ib_alloc_security(void **sec)
1547 {
1548         return call_int_hook(ib_alloc_security, 0, sec);
1549 }
1550 EXPORT_SYMBOL(security_ib_alloc_security);
1551
1552 void security_ib_free_security(void *sec)
1553 {
1554         call_void_hook(ib_free_security, sec);
1555 }
1556 EXPORT_SYMBOL(security_ib_free_security);
1557 #endif  /* CONFIG_SECURITY_INFINIBAND */
1558
1559 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1560
1561 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1562                                struct xfrm_user_sec_ctx *sec_ctx,
1563                                gfp_t gfp)
1564 {
1565         return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1566 }
1567 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1568
1569 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1570                               struct xfrm_sec_ctx **new_ctxp)
1571 {
1572         return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1573 }
1574
1575 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1576 {
1577         call_void_hook(xfrm_policy_free_security, ctx);
1578 }
1579 EXPORT_SYMBOL(security_xfrm_policy_free);
1580
1581 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1582 {
1583         return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1584 }
1585
1586 int security_xfrm_state_alloc(struct xfrm_state *x,
1587                               struct xfrm_user_sec_ctx *sec_ctx)
1588 {
1589         return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1590 }
1591 EXPORT_SYMBOL(security_xfrm_state_alloc);
1592
1593 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1594                                       struct xfrm_sec_ctx *polsec, u32 secid)
1595 {
1596         return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1597 }
1598
1599 int security_xfrm_state_delete(struct xfrm_state *x)
1600 {
1601         return call_int_hook(xfrm_state_delete_security, 0, x);
1602 }
1603 EXPORT_SYMBOL(security_xfrm_state_delete);
1604
1605 void security_xfrm_state_free(struct xfrm_state *x)
1606 {
1607         call_void_hook(xfrm_state_free_security, x);
1608 }
1609
1610 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1611 {
1612         return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1613 }
1614
1615 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1616                                        struct xfrm_policy *xp,
1617                                        const struct flowi *fl)
1618 {
1619         struct security_hook_list *hp;
1620         int rc = 1;
1621
1622         /*
1623          * Since this function is expected to return 0 or 1, the judgment
1624          * becomes difficult if multiple LSMs supply this call. Fortunately,
1625          * we can use the first LSM's judgment because currently only SELinux
1626          * supplies this call.
1627          *
1628          * For speed optimization, we explicitly break the loop rather than
1629          * using the macro
1630          */
1631         list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1632                                 list) {
1633                 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1634                 break;
1635         }
1636         return rc;
1637 }
1638
1639 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1640 {
1641         return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1642 }
1643
1644 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1645 {
1646         int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1647                                 0);
1648
1649         BUG_ON(rc);
1650 }
1651 EXPORT_SYMBOL(security_skb_classify_flow);
1652
1653 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1654
1655 #ifdef CONFIG_KEYS
1656
1657 int security_key_alloc(struct key *key, const struct cred *cred,
1658                        unsigned long flags)
1659 {
1660         return call_int_hook(key_alloc, 0, key, cred, flags);
1661 }
1662
1663 void security_key_free(struct key *key)
1664 {
1665         call_void_hook(key_free, key);
1666 }
1667
1668 int security_key_permission(key_ref_t key_ref,
1669                             const struct cred *cred, unsigned perm)
1670 {
1671         return call_int_hook(key_permission, 0, key_ref, cred, perm);
1672 }
1673
1674 int security_key_getsecurity(struct key *key, char **_buffer)
1675 {
1676         *_buffer = NULL;
1677         return call_int_hook(key_getsecurity, 0, key, _buffer);
1678 }
1679
1680 #endif  /* CONFIG_KEYS */
1681
1682 #ifdef CONFIG_AUDIT
1683
1684 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1685 {
1686         return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1687 }
1688
1689 int security_audit_rule_known(struct audit_krule *krule)
1690 {
1691         return call_int_hook(audit_rule_known, 0, krule);
1692 }
1693
1694 void security_audit_rule_free(void *lsmrule)
1695 {
1696         call_void_hook(audit_rule_free, lsmrule);
1697 }
1698
1699 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1700                               struct audit_context *actx)
1701 {
1702         return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1703                                 actx);
1704 }
1705 #endif /* CONFIG_AUDIT */