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/bpf.h>
  16 #include <linux/capability.h>
  17 #include <linux/dcache.h>
  18 #include <linux/module.h>
  19 #include <linux/init.h>
  20 #include <linux/kernel.h>
  21 #include <linux/lsm_hooks.h>
  22 #include <linux/integrity.h>
  23 #include <linux/ima.h>
  24 #include <linux/evm.h>
  25 #include <linux/fsnotify.h>
  26 #include <linux/mman.h>
  27 #include <linux/mount.h>
  28 #include <linux/personality.h>
  29 #include <linux/backing-dev.h>
  30 #include <linux/string.h>
  31 #include <net/flow.h>
  32
  33 #include <trace/events/initcall.h>
  34
  35 #define MAX_LSM_EVM_XATTR       2
  36
  37 /* Maximum number of letters for an LSM name string */
  38 #define SECURITY_NAME_MAX       10
  39
  40 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
  41 static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain);
  42
  43 char *lsm_names;
  44 /* Boot-time LSM user choice */
  45 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  46         CONFIG_DEFAULT_SECURITY;
  47
  48 static void __init do_security_initcalls(void)
  49 {
  50         int ret;
  51         initcall_t call;
  52         initcall_entry_t *ce;
  53
  54         ce = __security_initcall_start;
  55         trace_initcall_level("security");
  56         while (ce < __security_initcall_end) {
  57                 call = initcall_from_entry(ce);
  58                 trace_initcall_start(call);
  59                 ret = call();
  60                 trace_initcall_finish(call, ret);
  61                 ce++;
  62         }
  63 }
  64
  65 /**
  66  * security_init - initializes the security framework
  67  *
  68  * This should be called early in the kernel initialization sequence.
  69  */
  70 int __init security_init(void)
  71 {
  72         int i;
  73         struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
  74
  75         for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
  76              i++)
  77                 INIT_HLIST_HEAD(&list[i]);
  78         pr_info("Security Framework initialized\n");
  79
  80         /*
  81          * Load minor LSMs, with the capability module always first.
  82          */
  83         capability_add_hooks();
  84         yama_add_hooks();
  85         loadpin_add_hooks();
  86
  87         /*
  88          * Load all the remaining security modules.
  89          */
  90         do_security_initcalls();
  91
  92         return 0;
  93 }
  94
  95 /* Save user chosen LSM */
  96 static int __init choose_lsm(char *str)
  97 {
  98         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  99         return 1;
 100 }
 101 __setup("security=", choose_lsm);
 102
 103 static bool match_last_lsm(const char *list, const char *lsm)
 104 {
 105         const char *last;
 106
 107         if (WARN_ON(!list || !lsm))
 108                 return false;
 109         last = strrchr(list, ',');
 110         if (last)
 111                 /* Pass the comma, strcmp() will check for '\0' */
 112                 last++;
 113         else
 114                 last = list;
 115         return !strcmp(last, lsm);
 116 }
 117
 118 static int lsm_append(char *new, char **result)
 119 {
 120         char *cp;
 121
 122         if (*result == NULL) {
 123                 *result = kstrdup(new, GFP_KERNEL);
 124                 if (*result == NULL)
 125                         return -ENOMEM;
 126         } else {
 127                 /* Check if it is the last registered name */
 128                 if (match_last_lsm(*result, new))
 129                         return 0;
 130                 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
 131                 if (cp == NULL)
 132                         return -ENOMEM;
 133                 kfree(*result);
 134                 *result = cp;
 135         }
 136         return 0;
 137 }
 138
 139 /**
 140  * security_module_enable - Load given security module on boot ?
 141  * @module: the name of the module
 142  *
 143  * Each LSM must pass this method before registering its own operations
 144  * to avoid security registration races. This method may also be used
 145  * to check if your LSM is currently loaded during kernel initialization.
 146  *
 147  * Returns:
 148  *
 149  * true if:
 150  *
 151  * - The passed LSM is the one chosen by user at boot time,
 152  * - or the passed LSM is configured as the default and the user did not
 153  *   choose an alternate LSM at boot time.
 154  *
 155  * Otherwise, return false.
 156  */
 157 int __init security_module_enable(const char *module)
 158 {
 159         return !strcmp(module, chosen_lsm);
 160 }
 161
 162 /**
 163  * security_add_hooks - Add a modules hooks to the hook lists.
 164  * @hooks: the hooks to add
 165  * @count: the number of hooks to add
 166  * @lsm: the name of the security module
 167  *
 168  * Each LSM has to register its hooks with the infrastructure.
 169  */
 170 void __init security_add_hooks(struct security_hook_list *hooks, int count,
 171                                 char *lsm)
 172 {
 173         int i;
 174
 175         for (i = 0; i < count; i++) {
 176                 hooks[i].lsm = lsm;
 177                 hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
 178         }
 179         if (lsm_append(lsm, &lsm_names) < 0)
 180                 panic("%s - Cannot get early memory.\n", __func__);
 181 }
 182
 183 int call_lsm_notifier(enum lsm_event event, void *data)
 184 {
 185         return atomic_notifier_call_chain(&lsm_notifier_chain, event, data);
 186 }
 187 EXPORT_SYMBOL(call_lsm_notifier);
 188
 189 int register_lsm_notifier(struct notifier_block *nb)
 190 {
 191         return atomic_notifier_chain_register(&lsm_notifier_chain, nb);
 192 }
 193 EXPORT_SYMBOL(register_lsm_notifier);
 194
 195 int unregister_lsm_notifier(struct notifier_block *nb)
 196 {
 197         return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb);
 198 }
 199 EXPORT_SYMBOL(unregister_lsm_notifier);
 200
 201 /*
 202  * Hook list operation macros.
 203  *
 204  * call_void_hook:
 205  *      This is a hook that does not return a value.
 206  *
 207  * call_int_hook:
 208  *      This is a hook that returns a value.
 209  */
 210
 211 #define call_void_hook(FUNC, ...)                               \
 212         do {                                                    \
 213                 struct security_hook_list *P;                   \
 214                                                                 \
 215                 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
 216                         P->hook.FUNC(__VA_ARGS__);              \
 217         } while (0)
 218
 219 #define call_int_hook(FUNC, IRC, ...) ({                        \
 220         int RC = IRC;                                           \
 221         do {                                                    \
 222                 struct security_hook_list *P;                   \
 223                                                                 \
 224                 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
 225                         RC = P->hook.FUNC(__VA_ARGS__);         \
 226                         if (RC != 0)                            \
 227                                 break;                          \
 228                 }                                               \
 229         } while (0);                                            \
 230         RC;                                                     \
 231 })
 232
 233 /* Security operations */
 234
 235 int security_binder_set_context_mgr(struct task_struct *mgr)
 236 {
 237         return call_int_hook(binder_set_context_mgr, 0, mgr);
 238 }
 239
 240 int security_binder_transaction(struct task_struct *from,
 241                                 struct task_struct *to)
 242 {
 243         return call_int_hook(binder_transaction, 0, from, to);
 244 }
 245
 246 int security_binder_transfer_binder(struct task_struct *from,
 247                                     struct task_struct *to)
 248 {
 249         return call_int_hook(binder_transfer_binder, 0, from, to);
 250 }
 251
 252 int security_binder_transfer_file(struct task_struct *from,
 253                                   struct task_struct *to, struct file *file)
 254 {
 255         return call_int_hook(binder_transfer_file, 0, from, to, file);
 256 }
 257
 258 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 259 {
 260         return call_int_hook(ptrace_access_check, 0, child, mode);
 261 }
 262
 263 int security_ptrace_traceme(struct task_struct *parent)
 264 {
 265         return call_int_hook(ptrace_traceme, 0, parent);
 266 }
 267
 268 int security_capget(struct task_struct *target,
 269                      kernel_cap_t *effective,
 270                      kernel_cap_t *inheritable,
 271                      kernel_cap_t *permitted)
 272 {
 273         return call_int_hook(capget, 0, target,
 274                                 effective, inheritable, permitted);
 275 }
 276
 277 int security_capset(struct cred *new, const struct cred *old,
 278                     const kernel_cap_t *effective,
 279                     const kernel_cap_t *inheritable,
 280                     const kernel_cap_t *permitted)
 281 {
 282         return call_int_hook(capset, 0, new, old,
 283                                 effective, inheritable, permitted);
 284 }
 285
 286 int security_capable(const struct cred *cred,
 287                      struct user_namespace *ns,
 288                      int cap,
 289                      unsigned int opts)
 290 {
 291         return call_int_hook(capable, 0, cred, ns, cap, opts);
 292 }
 293
 294 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 295 {
 296         return call_int_hook(quotactl, 0, cmds, type, id, sb);
 297 }
 298
 299 int security_quota_on(struct dentry *dentry)
 300 {
 301         return call_int_hook(quota_on, 0, dentry);
 302 }
 303
 304 int security_syslog(int type)
 305 {
 306         return call_int_hook(syslog, 0, type);
 307 }
 308
 309 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
 310 {
 311         return call_int_hook(settime, 0, ts, tz);
 312 }
 313
 314 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 315 {
 316         struct security_hook_list *hp;
 317         int cap_sys_admin = 1;
 318         int rc;
 319
 320         /*
 321          * The module will respond with a positive value if
 322          * it thinks the __vm_enough_memory() call should be
 323          * made with the cap_sys_admin set. If all of the modules
 324          * agree that it should be set it will. If any module
 325          * thinks it should not be set it won't.
 326          */
 327         hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
 328                 rc = hp->hook.vm_enough_memory(mm, pages);
 329                 if (rc <= 0) {
 330                         cap_sys_admin = 0;
 331                         break;
 332                 }
 333         }
 334         return __vm_enough_memory(mm, pages, cap_sys_admin);
 335 }
 336
 337 int security_bprm_set_creds(struct linux_binprm *bprm)
 338 {
 339         return call_int_hook(bprm_set_creds, 0, bprm);
 340 }
 341
 342 int security_bprm_check(struct linux_binprm *bprm)
 343 {
 344         int ret;
 345
 346         ret = call_int_hook(bprm_check_security, 0, bprm);
 347         if (ret)
 348                 return ret;
 349         return ima_bprm_check(bprm);
 350 }
 351
 352 void security_bprm_committing_creds(struct linux_binprm *bprm)
 353 {
 354         call_void_hook(bprm_committing_creds, bprm);
 355 }
 356
 357 void security_bprm_committed_creds(struct linux_binprm *bprm)
 358 {
 359         call_void_hook(bprm_committed_creds, bprm);
 360 }
 361
 362 int security_sb_alloc(struct super_block *sb)
 363 {
 364         return call_int_hook(sb_alloc_security, 0, sb);
 365 }
 366
 367 void security_sb_free(struct super_block *sb)
 368 {
 369         call_void_hook(sb_free_security, sb);
 370 }
 371
 372 int security_sb_copy_data(char *orig, char *copy)
 373 {
 374         return call_int_hook(sb_copy_data, 0, orig, copy);
 375 }
 376 EXPORT_SYMBOL(security_sb_copy_data);
 377
 378 int security_sb_remount(struct super_block *sb, void *data)
 379 {
 380         return call_int_hook(sb_remount, 0, sb, data);
 381 }
 382
 383 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 384 {
 385         return call_int_hook(sb_kern_mount, 0, sb, flags, data);
 386 }
 387
 388 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 389 {
 390         return call_int_hook(sb_show_options, 0, m, sb);
 391 }
 392
 393 int security_sb_statfs(struct dentry *dentry)
 394 {
 395         return call_int_hook(sb_statfs, 0, dentry);
 396 }
 397
 398 int security_sb_mount(const char *dev_name, const struct path *path,
 399                        const char *type, unsigned long flags, void *data)
 400 {
 401         return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
 402 }
 403
 404 int security_sb_umount(struct vfsmount *mnt, int flags)
 405 {
 406         return call_int_hook(sb_umount, 0, mnt, flags);
 407 }
 408
 409 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
 410 {
 411         return call_int_hook(sb_pivotroot, 0, old_path, new_path);
 412 }
 413
 414 int security_sb_set_mnt_opts(struct super_block *sb,
 415                                 struct security_mnt_opts *opts,
 416                                 unsigned long kern_flags,
 417                                 unsigned long *set_kern_flags)
 418 {
 419         return call_int_hook(sb_set_mnt_opts,
 420                                 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
 421                                 opts, kern_flags, set_kern_flags);
 422 }
 423 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 424
 425 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 426                                 struct super_block *newsb,
 427                                 unsigned long kern_flags,
 428                                 unsigned long *set_kern_flags)
 429 {
 430         return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
 431                                 kern_flags, set_kern_flags);
 432 }
 433 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 434
 435 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 436 {
 437         return call_int_hook(sb_parse_opts_str, 0, options, opts);
 438 }
 439 EXPORT_SYMBOL(security_sb_parse_opts_str);
 440
 441 int security_inode_alloc(struct inode *inode)
 442 {
 443         inode->i_security = NULL;
 444         return call_int_hook(inode_alloc_security, 0, inode);
 445 }
 446
 447 void security_inode_free(struct inode *inode)
 448 {
 449         integrity_inode_free(inode);
 450         call_void_hook(inode_free_security, inode);
 451 }
 452
 453 int security_dentry_init_security(struct dentry *dentry, int mode,
 454                                         const struct qstr *name, void **ctx,
 455                                         u32 *ctxlen)
 456 {
 457         return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
 458                                 name, ctx, ctxlen);
 459 }
 460 EXPORT_SYMBOL(security_dentry_init_security);
 461
 462 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 463                                     struct qstr *name,
 464                                     const struct cred *old, struct cred *new)
 465 {
 466         return call_int_hook(dentry_create_files_as, 0, dentry, mode,
 467                                 name, old, new);
 468 }
 469 EXPORT_SYMBOL(security_dentry_create_files_as);
 470
 471 int security_inode_init_security(struct inode *inode, struct inode *dir,
 472                                  const struct qstr *qstr,
 473                                  const initxattrs initxattrs, void *fs_data)
 474 {
 475         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
 476         struct xattr *lsm_xattr, *evm_xattr, *xattr;
 477         int ret;
 478
 479         if (unlikely(IS_PRIVATE(inode)))
 480                 return 0;
 481
 482         if (!initxattrs)
 483                 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
 484                                      dir, qstr, NULL, NULL, NULL);
 485         memset(new_xattrs, 0, sizeof(new_xattrs));
 486         lsm_xattr = new_xattrs;
 487         ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
 488                                                 &lsm_xattr->name,
 489                                                 &lsm_xattr->value,
 490                                                 &lsm_xattr->value_len);
 491         if (ret)
 492                 goto out;
 493
 494         evm_xattr = lsm_xattr + 1;
 495         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
 496         if (ret)
 497                 goto out;
 498         ret = initxattrs(inode, new_xattrs, fs_data);
 499 out:
 500         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
 501                 kfree(xattr->value);
 502         return (ret == -EOPNOTSUPP) ? 0 : ret;
 503 }
 504 EXPORT_SYMBOL(security_inode_init_security);
 505
 506 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 507                                      const struct qstr *qstr, const char **name,
 508                                      void **value, size_t *len)
 509 {
 510         if (unlikely(IS_PRIVATE(inode)))
 511                 return -EOPNOTSUPP;
 512         return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
 513                              qstr, name, value, len);
 514 }
 515 EXPORT_SYMBOL(security_old_inode_init_security);
 516
 517 #ifdef CONFIG_SECURITY_PATH
 518 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
 519                         unsigned int dev)
 520 {
 521         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 522                 return 0;
 523         return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
 524 }
 525 EXPORT_SYMBOL(security_path_mknod);
 526
 527 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
 528 {
 529         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 530                 return 0;
 531         return call_int_hook(path_mkdir, 0, dir, dentry, mode);
 532 }
 533 EXPORT_SYMBOL(security_path_mkdir);
 534
 535 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
 536 {
 537         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 538                 return 0;
 539         return call_int_hook(path_rmdir, 0, dir, dentry);
 540 }
 541
 542 int security_path_unlink(const struct path *dir, struct dentry *dentry)
 543 {
 544         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 545                 return 0;
 546         return call_int_hook(path_unlink, 0, dir, dentry);
 547 }
 548 EXPORT_SYMBOL(security_path_unlink);
 549
 550 int security_path_symlink(const struct path *dir, struct dentry *dentry,
 551                           const char *old_name)
 552 {
 553         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 554                 return 0;
 555         return call_int_hook(path_symlink, 0, dir, dentry, old_name);
 556 }
 557
 558 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
 559                        struct dentry *new_dentry)
 560 {
 561         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 562                 return 0;
 563         return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
 564 }
 565
 566 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
 567                          const struct path *new_dir, struct dentry *new_dentry,
 568                          unsigned int flags)
 569 {
 570         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 571                      (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 572                 return 0;
 573
 574         if (flags & RENAME_EXCHANGE) {
 575                 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
 576                                         old_dir, old_dentry);
 577                 if (err)
 578                         return err;
 579         }
 580
 581         return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
 582                                 new_dentry);
 583 }
 584 EXPORT_SYMBOL(security_path_rename);
 585
 586 int security_path_truncate(const struct path *path)
 587 {
 588         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 589                 return 0;
 590         return call_int_hook(path_truncate, 0, path);
 591 }
 592
 593 int security_path_chmod(const struct path *path, umode_t mode)
 594 {
 595         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 596                 return 0;
 597         return call_int_hook(path_chmod, 0, path, mode);
 598 }
 599
 600 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 601 {
 602         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 603                 return 0;
 604         return call_int_hook(path_chown, 0, path, uid, gid);
 605 }
 606
 607 int security_path_chroot(const struct path *path)
 608 {
 609         return call_int_hook(path_chroot, 0, path);
 610 }
 611 #endif
 612
 613 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
 614 {
 615         if (unlikely(IS_PRIVATE(dir)))
 616                 return 0;
 617         return call_int_hook(inode_create, 0, dir, dentry, mode);
 618 }
 619 EXPORT_SYMBOL_GPL(security_inode_create);
 620
 621 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 622                          struct dentry *new_dentry)
 623 {
 624         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 625                 return 0;
 626         return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
 627 }
 628
 629 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 630 {
 631         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 632                 return 0;
 633         return call_int_hook(inode_unlink, 0, dir, dentry);
 634 }
 635
 636 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 637                             const char *old_name)
 638 {
 639         if (unlikely(IS_PRIVATE(dir)))
 640                 return 0;
 641         return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
 642 }
 643
 644 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 645 {
 646         if (unlikely(IS_PRIVATE(dir)))
 647                 return 0;
 648         return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
 649 }
 650 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 651
 652 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 653 {
 654         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 655                 return 0;
 656         return call_int_hook(inode_rmdir, 0, dir, dentry);
 657 }
 658
 659 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
 660 {
 661         if (unlikely(IS_PRIVATE(dir)))
 662                 return 0;
 663         return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
 664 }
 665
 666 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 667                            struct inode *new_dir, struct dentry *new_dentry,
 668                            unsigned int flags)
 669 {
 670         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 671             (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 672                 return 0;
 673
 674         if (flags & RENAME_EXCHANGE) {
 675                 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
 676                                                      old_dir, old_dentry);
 677                 if (err)
 678                         return err;
 679         }
 680
 681         return call_int_hook(inode_rename, 0, old_dir, old_dentry,
 682                                            new_dir, new_dentry);
 683 }
 684
 685 int security_inode_readlink(struct dentry *dentry)
 686 {
 687         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 688                 return 0;
 689         return call_int_hook(inode_readlink, 0, dentry);
 690 }
 691
 692 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 693                                bool rcu)
 694 {
 695         if (unlikely(IS_PRIVATE(inode)))
 696                 return 0;
 697         return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
 698 }
 699
 700 int security_inode_permission(struct inode *inode, int mask)
 701 {
 702         if (unlikely(IS_PRIVATE(inode)))
 703                 return 0;
 704         return call_int_hook(inode_permission, 0, inode, mask);
 705 }
 706
 707 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 708 {
 709         int ret;
 710
 711         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 712                 return 0;
 713         ret = call_int_hook(inode_setattr, 0, dentry, attr);
 714         if (ret)
 715                 return ret;
 716         return evm_inode_setattr(dentry, attr);
 717 }
 718 EXPORT_SYMBOL_GPL(security_inode_setattr);
 719
 720 int security_inode_getattr(const struct path *path)
 721 {
 722         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 723                 return 0;
 724         return call_int_hook(inode_getattr, 0, path);
 725 }
 726
 727 int security_inode_setxattr(struct dentry *dentry, const char *name,
 728                             const void *value, size_t size, int flags)
 729 {
 730         int ret;
 731
 732         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 733                 return 0;
 734         /*
 735          * SELinux and Smack integrate the cap call,
 736          * so assume that all LSMs supplying this call do so.
 737          */
 738         ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
 739                                 flags);
 740
 741         if (ret == 1)
 742                 ret = cap_inode_setxattr(dentry, name, value, size, flags);
 743         if (ret)
 744                 return ret;
 745         ret = ima_inode_setxattr(dentry, name, value, size);
 746         if (ret)
 747                 return ret;
 748         return evm_inode_setxattr(dentry, name, value, size);
 749 }
 750
 751 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 752                                   const void *value, size_t size, int flags)
 753 {
 754         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 755                 return;
 756         call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
 757         evm_inode_post_setxattr(dentry, name, value, size);
 758 }
 759
 760 int security_inode_getxattr(struct dentry *dentry, const char *name)
 761 {
 762         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 763                 return 0;
 764         return call_int_hook(inode_getxattr, 0, dentry, name);
 765 }
 766
 767 int security_inode_listxattr(struct dentry *dentry)
 768 {
 769         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 770                 return 0;
 771         return call_int_hook(inode_listxattr, 0, dentry);
 772 }
 773
 774 int security_inode_removexattr(struct dentry *dentry, const char *name)
 775 {
 776         int ret;
 777
 778         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 779                 return 0;
 780         /*
 781          * SELinux and Smack integrate the cap call,
 782          * so assume that all LSMs supplying this call do so.
 783          */
 784         ret = call_int_hook(inode_removexattr, 1, dentry, name);
 785         if (ret == 1)
 786                 ret = cap_inode_removexattr(dentry, name);
 787         if (ret)
 788                 return ret;
 789         ret = ima_inode_removexattr(dentry, name);
 790         if (ret)
 791                 return ret;
 792         return evm_inode_removexattr(dentry, name);
 793 }
 794
 795 int security_inode_need_killpriv(struct dentry *dentry)
 796 {
 797         return call_int_hook(inode_need_killpriv, 0, dentry);
 798 }
 799
 800 int security_inode_killpriv(struct dentry *dentry)
 801 {
 802         return call_int_hook(inode_killpriv, 0, dentry);
 803 }
 804
 805 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 806 {
 807         struct security_hook_list *hp;
 808         int rc;
 809
 810         if (unlikely(IS_PRIVATE(inode)))
 811                 return -EOPNOTSUPP;
 812         /*
 813          * Only one module will provide an attribute with a given name.
 814          */
 815         hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
 816                 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
 817                 if (rc != -EOPNOTSUPP)
 818                         return rc;
 819         }
 820         return -EOPNOTSUPP;
 821 }
 822
 823 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 824 {
 825         struct security_hook_list *hp;
 826         int rc;
 827
 828         if (unlikely(IS_PRIVATE(inode)))
 829                 return -EOPNOTSUPP;
 830         /*
 831          * Only one module will provide an attribute with a given name.
 832          */
 833         hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
 834                 rc = hp->hook.inode_setsecurity(inode, name, value, size,
 835                                                                 flags);
 836                 if (rc != -EOPNOTSUPP)
 837                         return rc;
 838         }
 839         return -EOPNOTSUPP;
 840 }
 841
 842 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 843 {
 844         if (unlikely(IS_PRIVATE(inode)))
 845                 return 0;
 846         return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
 847 }
 848 EXPORT_SYMBOL(security_inode_listsecurity);
 849
 850 void security_inode_getsecid(struct inode *inode, u32 *secid)
 851 {
 852         call_void_hook(inode_getsecid, inode, secid);
 853 }
 854
 855 int security_inode_copy_up(struct dentry *src, struct cred **new)
 856 {
 857         return call_int_hook(inode_copy_up, 0, src, new);
 858 }
 859 EXPORT_SYMBOL(security_inode_copy_up);
 860
 861 int security_inode_copy_up_xattr(const char *name)
 862 {
 863         return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
 864 }
 865 EXPORT_SYMBOL(security_inode_copy_up_xattr);
 866
 867 int security_file_permission(struct file *file, int mask)
 868 {
 869         int ret;
 870
 871         ret = call_int_hook(file_permission, 0, file, mask);
 872         if (ret)
 873                 return ret;
 874
 875         return fsnotify_perm(file, mask);
 876 }
 877
 878 int security_file_alloc(struct file *file)
 879 {
 880         return call_int_hook(file_alloc_security, 0, file);
 881 }
 882
 883 void security_file_free(struct file *file)
 884 {
 885         call_void_hook(file_free_security, file);
 886 }
 887
 888 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 889 {
 890         return call_int_hook(file_ioctl, 0, file, cmd, arg);
 891 }
 892
 893 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
 894 {
 895         /*
 896          * Does we have PROT_READ and does the application expect
 897          * it to imply PROT_EXEC?  If not, nothing to talk about...
 898          */
 899         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
 900                 return prot;
 901         if (!(current->personality & READ_IMPLIES_EXEC))
 902                 return prot;
 903         /*
 904          * if that's an anonymous mapping, let it.
 905          */
 906         if (!file)
 907                 return prot | PROT_EXEC;
 908         /*
 909          * ditto if it's not on noexec mount, except that on !MMU we need
 910          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
 911          */
 912         if (!path_noexec(&file->f_path)) {
 913 #ifndef CONFIG_MMU
 914                 if (file->f_op->mmap_capabilities) {
 915                         unsigned caps = file->f_op->mmap_capabilities(file);
 916                         if (!(caps & NOMMU_MAP_EXEC))
 917                                 return prot;
 918                 }
 919 #endif
 920                 return prot | PROT_EXEC;
 921         }
 922         /* anything on noexec mount won't get PROT_EXEC */
 923         return prot;
 924 }
 925
 926 int security_mmap_file(struct file *file, unsigned long prot,
 927                         unsigned long flags)
 928 {
 929         int ret;
 930         ret = call_int_hook(mmap_file, 0, file, prot,
 931                                         mmap_prot(file, prot), flags);
 932         if (ret)
 933                 return ret;
 934         return ima_file_mmap(file, prot);
 935 }
 936
 937 int security_mmap_addr(unsigned long addr)
 938 {
 939         return call_int_hook(mmap_addr, 0, addr);
 940 }
 941
 942 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 943                             unsigned long prot)
 944 {
 945         return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
 946 }
 947
 948 int security_file_lock(struct file *file, unsigned int cmd)
 949 {
 950         return call_int_hook(file_lock, 0, file, cmd);
 951 }
 952
 953 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 954 {
 955         return call_int_hook(file_fcntl, 0, file, cmd, arg);
 956 }
 957
 958 void security_file_set_fowner(struct file *file)
 959 {
 960         call_void_hook(file_set_fowner, file);
 961 }
 962
 963 int security_file_send_sigiotask(struct task_struct *tsk,
 964                                   struct fown_struct *fown, int sig)
 965 {
 966         return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
 967 }
 968
 969 int security_file_receive(struct file *file)
 970 {
 971         return call_int_hook(file_receive, 0, file);
 972 }
 973
 974 int security_file_open(struct file *file)
 975 {
 976         int ret;
 977
 978         ret = call_int_hook(file_open, 0, file);
 979         if (ret)
 980                 return ret;
 981
 982         return fsnotify_perm(file, MAY_OPEN);
 983 }
 984
 985 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
 986 {
 987         return call_int_hook(task_alloc, 0, task, clone_flags);
 988 }
 989
 990 void security_task_free(struct task_struct *task)
 991 {
 992         call_void_hook(task_free, task);
 993 }
 994
 995 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 996 {
 997         return call_int_hook(cred_alloc_blank, 0, cred, gfp);
 998 }
 999
1000 void security_cred_free(struct cred *cred)
1001 {
1002         /*
1003          * There is a failure case in prepare_creds() that
1004          * may result in a call here with ->security being NULL.
1005          */
1006         if (unlikely(cred->security == NULL))
1007                 return;
1008
1009         call_void_hook(cred_free, cred);
1010 }
1011
1012 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1013 {
1014         return call_int_hook(cred_prepare, 0, new, old, gfp);
1015 }
1016
1017 void security_transfer_creds(struct cred *new, const struct cred *old)
1018 {
1019         call_void_hook(cred_transfer, new, old);
1020 }
1021
1022 void security_cred_getsecid(const struct cred *c, u32 *secid)
1023 {
1024         *secid = 0;
1025         call_void_hook(cred_getsecid, c, secid);
1026 }
1027 EXPORT_SYMBOL(security_cred_getsecid);
1028
1029 int security_kernel_act_as(struct cred *new, u32 secid)
1030 {
1031         return call_int_hook(kernel_act_as, 0, new, secid);
1032 }
1033
1034 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1035 {
1036         return call_int_hook(kernel_create_files_as, 0, new, inode);
1037 }
1038
1039 int security_kernel_module_request(char *kmod_name)
1040 {
1041         int ret;
1042
1043         ret = call_int_hook(kernel_module_request, 0, kmod_name);
1044         if (ret)
1045                 return ret;
1046         return integrity_kernel_module_request(kmod_name);
1047 }
1048
1049 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1050 {
1051         int ret;
1052
1053         ret = call_int_hook(kernel_read_file, 0, file, id);
1054         if (ret)
1055                 return ret;
1056         return ima_read_file(file, id);
1057 }
1058 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1059
1060 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1061                                    enum kernel_read_file_id id)
1062 {
1063         int ret;
1064
1065         ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1066         if (ret)
1067                 return ret;
1068         return ima_post_read_file(file, buf, size, id);
1069 }
1070 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1071
1072 int security_kernel_load_data(enum kernel_load_data_id id)
1073 {
1074         int ret;
1075
1076         ret = call_int_hook(kernel_load_data, 0, id);
1077         if (ret)
1078                 return ret;
1079         return ima_load_data(id);
1080 }
1081 EXPORT_SYMBOL_GPL(security_kernel_load_data);
1082
1083 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1084                              int flags)
1085 {
1086         return call_int_hook(task_fix_setuid, 0, new, old, flags);
1087 }
1088
1089 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1090 {
1091         return call_int_hook(task_setpgid, 0, p, pgid);
1092 }
1093
1094 int security_task_getpgid(struct task_struct *p)
1095 {
1096         return call_int_hook(task_getpgid, 0, p);
1097 }
1098
1099 int security_task_getsid(struct task_struct *p)
1100 {
1101         return call_int_hook(task_getsid, 0, p);
1102 }
1103
1104 void security_task_getsecid(struct task_struct *p, u32 *secid)
1105 {
1106         *secid = 0;
1107         call_void_hook(task_getsecid, p, secid);
1108 }
1109 EXPORT_SYMBOL(security_task_getsecid);
1110
1111 int security_task_setnice(struct task_struct *p, int nice)
1112 {
1113         return call_int_hook(task_setnice, 0, p, nice);
1114 }
1115
1116 int security_task_setioprio(struct task_struct *p, int ioprio)
1117 {
1118         return call_int_hook(task_setioprio, 0, p, ioprio);
1119 }
1120
1121 int security_task_getioprio(struct task_struct *p)
1122 {
1123         return call_int_hook(task_getioprio, 0, p);
1124 }
1125
1126 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1127                           unsigned int flags)
1128 {
1129         return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1130 }
1131
1132 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1133                 struct rlimit *new_rlim)
1134 {
1135         return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1136 }
1137
1138 int security_task_setscheduler(struct task_struct *p)
1139 {
1140         return call_int_hook(task_setscheduler, 0, p);
1141 }
1142
1143 int security_task_getscheduler(struct task_struct *p)
1144 {
1145         return call_int_hook(task_getscheduler, 0, p);
1146 }
1147
1148 int security_task_movememory(struct task_struct *p)
1149 {
1150         return call_int_hook(task_movememory, 0, p);
1151 }
1152
1153 int security_task_kill(struct task_struct *p, struct siginfo *info,
1154                         int sig, const struct cred *cred)
1155 {
1156         return call_int_hook(task_kill, 0, p, info, sig, cred);
1157 }
1158
1159 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1160                          unsigned long arg4, unsigned long arg5)
1161 {
1162         int thisrc;
1163         int rc = -ENOSYS;
1164         struct security_hook_list *hp;
1165
1166         hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1167                 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1168                 if (thisrc != -ENOSYS) {
1169                         rc = thisrc;
1170                         if (thisrc != 0)
1171                                 break;
1172                 }
1173         }
1174         return rc;
1175 }
1176
1177 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1178 {
1179         call_void_hook(task_to_inode, p, inode);
1180 }
1181
1182 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1183 {
1184         return call_int_hook(ipc_permission, 0, ipcp, flag);
1185 }
1186
1187 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1188 {
1189         *secid = 0;
1190         call_void_hook(ipc_getsecid, ipcp, secid);
1191 }
1192
1193 int security_msg_msg_alloc(struct msg_msg *msg)
1194 {
1195         return call_int_hook(msg_msg_alloc_security, 0, msg);
1196 }
1197
1198 void security_msg_msg_free(struct msg_msg *msg)
1199 {
1200         call_void_hook(msg_msg_free_security, msg);
1201 }
1202
1203 int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1204 {
1205         return call_int_hook(msg_queue_alloc_security, 0, msq);
1206 }
1207
1208 void security_msg_queue_free(struct kern_ipc_perm *msq)
1209 {
1210         call_void_hook(msg_queue_free_security, msq);
1211 }
1212
1213 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1214 {
1215         return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1216 }
1217
1218 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1219 {
1220         return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1221 }
1222
1223 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1224                                struct msg_msg *msg, int msqflg)
1225 {
1226         return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1227 }
1228
1229 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1230                                struct task_struct *target, long type, int mode)
1231 {
1232         return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1233 }
1234
1235 int security_shm_alloc(struct kern_ipc_perm *shp)
1236 {
1237         return call_int_hook(shm_alloc_security, 0, shp);
1238 }
1239
1240 void security_shm_free(struct kern_ipc_perm *shp)
1241 {
1242         call_void_hook(shm_free_security, shp);
1243 }
1244
1245 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
1246 {
1247         return call_int_hook(shm_associate, 0, shp, shmflg);
1248 }
1249
1250 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1251 {
1252         return call_int_hook(shm_shmctl, 0, shp, cmd);
1253 }
1254
1255 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
1256 {
1257         return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1258 }
1259
1260 int security_sem_alloc(struct kern_ipc_perm *sma)
1261 {
1262         return call_int_hook(sem_alloc_security, 0, sma);
1263 }
1264
1265 void security_sem_free(struct kern_ipc_perm *sma)
1266 {
1267         call_void_hook(sem_free_security, sma);
1268 }
1269
1270 int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1271 {
1272         return call_int_hook(sem_associate, 0, sma, semflg);
1273 }
1274
1275 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1276 {
1277         return call_int_hook(sem_semctl, 0, sma, cmd);
1278 }
1279
1280 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
1281                         unsigned nsops, int alter)
1282 {
1283         return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1284 }
1285
1286 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1287 {
1288         if (unlikely(inode && IS_PRIVATE(inode)))
1289                 return;
1290         call_void_hook(d_instantiate, dentry, inode);
1291 }
1292 EXPORT_SYMBOL(security_d_instantiate);
1293
1294 int security_getprocattr(struct task_struct *p, char *name, char **value)
1295 {
1296         return call_int_hook(getprocattr, -EINVAL, p, name, value);
1297 }
1298
1299 int security_setprocattr(const char *name, void *value, size_t size)
1300 {
1301         return call_int_hook(setprocattr, -EINVAL, name, value, size);
1302 }
1303
1304 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1305 {
1306         return call_int_hook(netlink_send, 0, sk, skb);
1307 }
1308
1309 int security_ismaclabel(const char *name)
1310 {
1311         return call_int_hook(ismaclabel, 0, name);
1312 }
1313 EXPORT_SYMBOL(security_ismaclabel);
1314
1315 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1316 {
1317         return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1318                                 seclen);
1319 }
1320 EXPORT_SYMBOL(security_secid_to_secctx);
1321
1322 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1323 {
1324         *secid = 0;
1325         return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1326 }
1327 EXPORT_SYMBOL(security_secctx_to_secid);
1328
1329 void security_release_secctx(char *secdata, u32 seclen)
1330 {
1331         call_void_hook(release_secctx, secdata, seclen);
1332 }
1333 EXPORT_SYMBOL(security_release_secctx);
1334
1335 void security_inode_invalidate_secctx(struct inode *inode)
1336 {
1337         call_void_hook(inode_invalidate_secctx, inode);
1338 }
1339 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1340
1341 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1342 {
1343         return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1344 }
1345 EXPORT_SYMBOL(security_inode_notifysecctx);
1346
1347 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1348 {
1349         return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1350 }
1351 EXPORT_SYMBOL(security_inode_setsecctx);
1352
1353 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1354 {
1355         return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1356 }
1357 EXPORT_SYMBOL(security_inode_getsecctx);
1358
1359 #ifdef CONFIG_SECURITY_NETWORK
1360
1361 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1362 {
1363         return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1364 }
1365 EXPORT_SYMBOL(security_unix_stream_connect);
1366
1367 int security_unix_may_send(struct socket *sock,  struct socket *other)
1368 {
1369         return call_int_hook(unix_may_send, 0, sock, other);
1370 }
1371 EXPORT_SYMBOL(security_unix_may_send);
1372
1373 int security_socket_create(int family, int type, int protocol, int kern)
1374 {
1375         return call_int_hook(socket_create, 0, family, type, protocol, kern);
1376 }
1377
1378 int security_socket_post_create(struct socket *sock, int family,
1379                                 int type, int protocol, int kern)
1380 {
1381         return call_int_hook(socket_post_create, 0, sock, family, type,
1382                                                 protocol, kern);
1383 }
1384
1385 int security_socket_socketpair(struct socket *socka, struct socket *sockb)
1386 {
1387         return call_int_hook(socket_socketpair, 0, socka, sockb);
1388 }
1389 EXPORT_SYMBOL(security_socket_socketpair);
1390
1391 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1392 {
1393         return call_int_hook(socket_bind, 0, sock, address, addrlen);
1394 }
1395
1396 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1397 {
1398         return call_int_hook(socket_connect, 0, sock, address, addrlen);
1399 }
1400
1401 int security_socket_listen(struct socket *sock, int backlog)
1402 {
1403         return call_int_hook(socket_listen, 0, sock, backlog);
1404 }
1405
1406 int security_socket_accept(struct socket *sock, struct socket *newsock)
1407 {
1408         return call_int_hook(socket_accept, 0, sock, newsock);
1409 }
1410
1411 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1412 {
1413         return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1414 }
1415
1416 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1417                             int size, int flags)
1418 {
1419         return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1420 }
1421
1422 int security_socket_getsockname(struct socket *sock)
1423 {
1424         return call_int_hook(socket_getsockname, 0, sock);
1425 }
1426
1427 int security_socket_getpeername(struct socket *sock)
1428 {
1429         return call_int_hook(socket_getpeername, 0, sock);
1430 }
1431
1432 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1433 {
1434         return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1435 }
1436
1437 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1438 {
1439         return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1440 }
1441
1442 int security_socket_shutdown(struct socket *sock, int how)
1443 {
1444         return call_int_hook(socket_shutdown, 0, sock, how);
1445 }
1446
1447 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1448 {
1449         return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1450 }
1451 EXPORT_SYMBOL(security_sock_rcv_skb);
1452
1453 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1454                                       int __user *optlen, unsigned len)
1455 {
1456         return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1457                                 optval, optlen, len);
1458 }
1459
1460 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1461 {
1462         return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1463                              skb, secid);
1464 }
1465 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1466
1467 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1468 {
1469         return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1470 }
1471
1472 void security_sk_free(struct sock *sk)
1473 {
1474         call_void_hook(sk_free_security, sk);
1475 }
1476
1477 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1478 {
1479         call_void_hook(sk_clone_security, sk, newsk);
1480 }
1481 EXPORT_SYMBOL(security_sk_clone);
1482
1483 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1484 {
1485         call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1486 }
1487 EXPORT_SYMBOL(security_sk_classify_flow);
1488
1489 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1490 {
1491         call_void_hook(req_classify_flow, req, fl);
1492 }
1493 EXPORT_SYMBOL(security_req_classify_flow);
1494
1495 void security_sock_graft(struct sock *sk, struct socket *parent)
1496 {
1497         call_void_hook(sock_graft, sk, parent);
1498 }
1499 EXPORT_SYMBOL(security_sock_graft);
1500
1501 int security_inet_conn_request(struct sock *sk,
1502                         struct sk_buff *skb, struct request_sock *req)
1503 {
1504         return call_int_hook(inet_conn_request, 0, sk, skb, req);
1505 }
1506 EXPORT_SYMBOL(security_inet_conn_request);
1507
1508 void security_inet_csk_clone(struct sock *newsk,
1509                         const struct request_sock *req)
1510 {
1511         call_void_hook(inet_csk_clone, newsk, req);
1512 }
1513
1514 void security_inet_conn_established(struct sock *sk,
1515                         struct sk_buff *skb)
1516 {
1517         call_void_hook(inet_conn_established, sk, skb);
1518 }
1519 EXPORT_SYMBOL(security_inet_conn_established);
1520
1521 int security_secmark_relabel_packet(u32 secid)
1522 {
1523         return call_int_hook(secmark_relabel_packet, 0, secid);
1524 }
1525 EXPORT_SYMBOL(security_secmark_relabel_packet);
1526
1527 void security_secmark_refcount_inc(void)
1528 {
1529         call_void_hook(secmark_refcount_inc);
1530 }
1531 EXPORT_SYMBOL(security_secmark_refcount_inc);
1532
1533 void security_secmark_refcount_dec(void)
1534 {
1535         call_void_hook(secmark_refcount_dec);
1536 }
1537 EXPORT_SYMBOL(security_secmark_refcount_dec);
1538
1539 int security_tun_dev_alloc_security(void **security)
1540 {
1541         return call_int_hook(tun_dev_alloc_security, 0, security);
1542 }
1543 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1544
1545 void security_tun_dev_free_security(void *security)
1546 {
1547         call_void_hook(tun_dev_free_security, security);
1548 }
1549 EXPORT_SYMBOL(security_tun_dev_free_security);
1550
1551 int security_tun_dev_create(void)
1552 {
1553         return call_int_hook(tun_dev_create, 0);
1554 }
1555 EXPORT_SYMBOL(security_tun_dev_create);
1556
1557 int security_tun_dev_attach_queue(void *security)
1558 {
1559         return call_int_hook(tun_dev_attach_queue, 0, security);
1560 }
1561 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1562
1563 int security_tun_dev_attach(struct sock *sk, void *security)
1564 {
1565         return call_int_hook(tun_dev_attach, 0, sk, security);
1566 }
1567 EXPORT_SYMBOL(security_tun_dev_attach);
1568
1569 int security_tun_dev_open(void *security)
1570 {
1571         return call_int_hook(tun_dev_open, 0, security);
1572 }
1573 EXPORT_SYMBOL(security_tun_dev_open);
1574
1575 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb)
1576 {
1577         return call_int_hook(sctp_assoc_request, 0, ep, skb);
1578 }
1579 EXPORT_SYMBOL(security_sctp_assoc_request);
1580
1581 int security_sctp_bind_connect(struct sock *sk, int optname,
1582                                struct sockaddr *address, int addrlen)
1583 {
1584         return call_int_hook(sctp_bind_connect, 0, sk, optname,
1585                              address, addrlen);
1586 }
1587 EXPORT_SYMBOL(security_sctp_bind_connect);
1588
1589 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1590                             struct sock *newsk)
1591 {
1592         call_void_hook(sctp_sk_clone, ep, sk, newsk);
1593 }
1594 EXPORT_SYMBOL(security_sctp_sk_clone);
1595
1596 #endif  /* CONFIG_SECURITY_NETWORK */
1597
1598 #ifdef CONFIG_SECURITY_INFINIBAND
1599
1600 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1601 {
1602         return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
1603 }
1604 EXPORT_SYMBOL(security_ib_pkey_access);
1605
1606 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1607 {
1608         return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
1609 }
1610 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
1611
1612 int security_ib_alloc_security(void **sec)
1613 {
1614         return call_int_hook(ib_alloc_security, 0, sec);
1615 }
1616 EXPORT_SYMBOL(security_ib_alloc_security);
1617
1618 void security_ib_free_security(void *sec)
1619 {
1620         call_void_hook(ib_free_security, sec);
1621 }
1622 EXPORT_SYMBOL(security_ib_free_security);
1623 #endif  /* CONFIG_SECURITY_INFINIBAND */
1624
1625 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1626
1627 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1628                                struct xfrm_user_sec_ctx *sec_ctx,
1629                                gfp_t gfp)
1630 {
1631         return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1632 }
1633 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1634
1635 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1636                               struct xfrm_sec_ctx **new_ctxp)
1637 {
1638         return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1639 }
1640
1641 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1642 {
1643         call_void_hook(xfrm_policy_free_security, ctx);
1644 }
1645 EXPORT_SYMBOL(security_xfrm_policy_free);
1646
1647 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1648 {
1649         return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1650 }
1651
1652 int security_xfrm_state_alloc(struct xfrm_state *x,
1653                               struct xfrm_user_sec_ctx *sec_ctx)
1654 {
1655         return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1656 }
1657 EXPORT_SYMBOL(security_xfrm_state_alloc);
1658
1659 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1660                                       struct xfrm_sec_ctx *polsec, u32 secid)
1661 {
1662         return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1663 }
1664
1665 int security_xfrm_state_delete(struct xfrm_state *x)
1666 {
1667         return call_int_hook(xfrm_state_delete_security, 0, x);
1668 }
1669 EXPORT_SYMBOL(security_xfrm_state_delete);
1670
1671 void security_xfrm_state_free(struct xfrm_state *x)
1672 {
1673         call_void_hook(xfrm_state_free_security, x);
1674 }
1675
1676 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1677 {
1678         return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1679 }
1680
1681 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1682                                        struct xfrm_policy *xp,
1683                                        const struct flowi *fl)
1684 {
1685         struct security_hook_list *hp;
1686         int rc = 1;
1687
1688         /*
1689          * Since this function is expected to return 0 or 1, the judgment
1690          * becomes difficult if multiple LSMs supply this call. Fortunately,
1691          * we can use the first LSM's judgment because currently only SELinux
1692          * supplies this call.
1693          *
1694          * For speed optimization, we explicitly break the loop rather than
1695          * using the macro
1696          */
1697         hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1698                                 list) {
1699                 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1700                 break;
1701         }
1702         return rc;
1703 }
1704
1705 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1706 {
1707         return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1708 }
1709
1710 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1711 {
1712         int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1713                                 0);
1714
1715         BUG_ON(rc);
1716 }
1717 EXPORT_SYMBOL(security_skb_classify_flow);
1718
1719 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1720
1721 #ifdef CONFIG_KEYS
1722
1723 int security_key_alloc(struct key *key, const struct cred *cred,
1724                        unsigned long flags)
1725 {
1726         return call_int_hook(key_alloc, 0, key, cred, flags);
1727 }
1728
1729 void security_key_free(struct key *key)
1730 {
1731         call_void_hook(key_free, key);
1732 }
1733
1734 int security_key_permission(key_ref_t key_ref,
1735                             const struct cred *cred, unsigned perm)
1736 {
1737         return call_int_hook(key_permission, 0, key_ref, cred, perm);
1738 }
1739
1740 int security_key_getsecurity(struct key *key, char **_buffer)
1741 {
1742         *_buffer = NULL;
1743         return call_int_hook(key_getsecurity, 0, key, _buffer);
1744 }
1745
1746 #endif  /* CONFIG_KEYS */
1747
1748 #ifdef CONFIG_AUDIT
1749
1750 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1751 {
1752         return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1753 }
1754
1755 int security_audit_rule_known(struct audit_krule *krule)
1756 {
1757         return call_int_hook(audit_rule_known, 0, krule);
1758 }
1759
1760 void security_audit_rule_free(void *lsmrule)
1761 {
1762         call_void_hook(audit_rule_free, lsmrule);
1763 }
1764
1765 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1766                               struct audit_context *actx)
1767 {
1768         return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1769                                 actx);
1770 }
1771 #endif /* CONFIG_AUDIT */
1772
1773 #ifdef CONFIG_BPF_SYSCALL
1774 int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
1775 {
1776         return call_int_hook(bpf, 0, cmd, attr, size);
1777 }
1778 int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1779 {
1780         return call_int_hook(bpf_map, 0, map, fmode);
1781 }
1782 int security_bpf_prog(struct bpf_prog *prog)
1783 {
1784         return call_int_hook(bpf_prog, 0, prog);
1785 }
1786 int security_bpf_map_alloc(struct bpf_map *map)
1787 {
1788         return call_int_hook(bpf_map_alloc_security, 0, map);
1789 }
1790 int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1791 {
1792         return call_int_hook(bpf_prog_alloc_security, 0, aux);
1793 }
1794 void security_bpf_map_free(struct bpf_map *map)
1795 {
1796         call_void_hook(bpf_map_free_security, map);
1797 }
1798 void security_bpf_prog_free(struct bpf_prog_aux *aux)
1799 {
1800         call_void_hook(bpf_prog_free_security, aux);
1801 }
1802 #endif /* CONFIG_BPF_SYSCALL */