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(const struct cred *mgr)
 236 {
 237         return call_int_hook(binder_set_context_mgr, 0, mgr);
 238 }
 239
 240 int security_binder_transaction(const struct cred *from,
 241                                 const struct cred *to)
 242 {
 243         return call_int_hook(binder_transaction, 0, from, to);
 244 }
 245
 246 int security_binder_transfer_binder(const struct cred *from,
 247                                     const struct cred *to)
 248 {
 249         return call_int_hook(binder_transfer_binder, 0, from, to);
 250 }
 251
 252 int security_binder_transfer_file(const struct cred *from,
 253                                   const struct cred *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 /**
 894  * security_file_ioctl_compat() - Check if an ioctl is allowed in compat mode
 895  * @file: associated file
 896  * @cmd: ioctl cmd
 897  * @arg: ioctl arguments
 898  *
 899  * Compat version of security_file_ioctl() that correctly handles 32-bit
 900  * processes running on 64-bit kernels.
 901  *
 902  * Return: Returns 0 if permission is granted.
 903  */
 904 int security_file_ioctl_compat(struct file *file, unsigned int cmd,
 905                                unsigned long arg)
 906 {
 907         return call_int_hook(file_ioctl_compat, 0, file, cmd, arg);
 908 }
 909
 910 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
 911 {
 912         /*
 913          * Does we have PROT_READ and does the application expect
 914          * it to imply PROT_EXEC?  If not, nothing to talk about...
 915          */
 916         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
 917                 return prot;
 918         if (!(current->personality & READ_IMPLIES_EXEC))
 919                 return prot;
 920         /*
 921          * if that's an anonymous mapping, let it.
 922          */
 923         if (!file)
 924                 return prot | PROT_EXEC;
 925         /*
 926          * ditto if it's not on noexec mount, except that on !MMU we need
 927          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
 928          */
 929         if (!path_noexec(&file->f_path)) {
 930 #ifndef CONFIG_MMU
 931                 if (file->f_op->mmap_capabilities) {
 932                         unsigned caps = file->f_op->mmap_capabilities(file);
 933                         if (!(caps & NOMMU_MAP_EXEC))
 934                                 return prot;
 935                 }
 936 #endif
 937                 return prot | PROT_EXEC;
 938         }
 939         /* anything on noexec mount won't get PROT_EXEC */
 940         return prot;
 941 }
 942
 943 int security_mmap_file(struct file *file, unsigned long prot,
 944                         unsigned long flags)
 945 {
 946         unsigned long prot_adj = mmap_prot(file, prot);
 947         int ret;
 948
 949         ret = call_int_hook(mmap_file, 0, file, prot, prot_adj, flags);
 950         if (ret)
 951                 return ret;
 952         return ima_file_mmap(file, prot, prot_adj, flags);
 953 }
 954
 955 int security_mmap_addr(unsigned long addr)
 956 {
 957         return call_int_hook(mmap_addr, 0, addr);
 958 }
 959
 960 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 961                             unsigned long prot)
 962 {
 963         return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
 964 }
 965
 966 int security_file_lock(struct file *file, unsigned int cmd)
 967 {
 968         return call_int_hook(file_lock, 0, file, cmd);
 969 }
 970
 971 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 972 {
 973         return call_int_hook(file_fcntl, 0, file, cmd, arg);
 974 }
 975
 976 void security_file_set_fowner(struct file *file)
 977 {
 978         call_void_hook(file_set_fowner, file);
 979 }
 980
 981 int security_file_send_sigiotask(struct task_struct *tsk,
 982                                   struct fown_struct *fown, int sig)
 983 {
 984         return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
 985 }
 986
 987 int security_file_receive(struct file *file)
 988 {
 989         return call_int_hook(file_receive, 0, file);
 990 }
 991
 992 int security_file_open(struct file *file)
 993 {
 994         int ret;
 995
 996         ret = call_int_hook(file_open, 0, file);
 997         if (ret)
 998                 return ret;
 999
1000         return fsnotify_perm(file, MAY_OPEN);
1001 }
1002
1003 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
1004 {
1005         return call_int_hook(task_alloc, 0, task, clone_flags);
1006 }
1007
1008 void security_task_free(struct task_struct *task)
1009 {
1010         call_void_hook(task_free, task);
1011 }
1012
1013 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1014 {
1015         return call_int_hook(cred_alloc_blank, 0, cred, gfp);
1016 }
1017
1018 void security_cred_free(struct cred *cred)
1019 {
1020         /*
1021          * There is a failure case in prepare_creds() that
1022          * may result in a call here with ->security being NULL.
1023          */
1024         if (unlikely(cred->security == NULL))
1025                 return;
1026
1027         call_void_hook(cred_free, cred);
1028 }
1029
1030 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1031 {
1032         return call_int_hook(cred_prepare, 0, new, old, gfp);
1033 }
1034
1035 void security_transfer_creds(struct cred *new, const struct cred *old)
1036 {
1037         call_void_hook(cred_transfer, new, old);
1038 }
1039
1040 void security_cred_getsecid(const struct cred *c, u32 *secid)
1041 {
1042         *secid = 0;
1043         call_void_hook(cred_getsecid, c, secid);
1044 }
1045 EXPORT_SYMBOL(security_cred_getsecid);
1046
1047 int security_kernel_act_as(struct cred *new, u32 secid)
1048 {
1049         return call_int_hook(kernel_act_as, 0, new, secid);
1050 }
1051
1052 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1053 {
1054         return call_int_hook(kernel_create_files_as, 0, new, inode);
1055 }
1056
1057 int security_kernel_module_request(char *kmod_name)
1058 {
1059         int ret;
1060
1061         ret = call_int_hook(kernel_module_request, 0, kmod_name);
1062         if (ret)
1063                 return ret;
1064         return integrity_kernel_module_request(kmod_name);
1065 }
1066
1067 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1068 {
1069         int ret;
1070
1071         ret = call_int_hook(kernel_read_file, 0, file, id);
1072         if (ret)
1073                 return ret;
1074         return ima_read_file(file, id);
1075 }
1076 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1077
1078 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1079                                    enum kernel_read_file_id id)
1080 {
1081         int ret;
1082
1083         ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1084         if (ret)
1085                 return ret;
1086         return ima_post_read_file(file, buf, size, id);
1087 }
1088 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1089
1090 int security_kernel_load_data(enum kernel_load_data_id id)
1091 {
1092         int ret;
1093
1094         ret = call_int_hook(kernel_load_data, 0, id);
1095         if (ret)
1096                 return ret;
1097         return ima_load_data(id);
1098 }
1099 EXPORT_SYMBOL_GPL(security_kernel_load_data);
1100
1101 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1102                              int flags)
1103 {
1104         return call_int_hook(task_fix_setuid, 0, new, old, flags);
1105 }
1106
1107 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1108 {
1109         return call_int_hook(task_setpgid, 0, p, pgid);
1110 }
1111
1112 int security_task_getpgid(struct task_struct *p)
1113 {
1114         return call_int_hook(task_getpgid, 0, p);
1115 }
1116
1117 int security_task_getsid(struct task_struct *p)
1118 {
1119         return call_int_hook(task_getsid, 0, p);
1120 }
1121
1122 void security_task_getsecid(struct task_struct *p, u32 *secid)
1123 {
1124         *secid = 0;
1125         call_void_hook(task_getsecid, p, secid);
1126 }
1127 EXPORT_SYMBOL(security_task_getsecid);
1128
1129 int security_task_setnice(struct task_struct *p, int nice)
1130 {
1131         return call_int_hook(task_setnice, 0, p, nice);
1132 }
1133
1134 int security_task_setioprio(struct task_struct *p, int ioprio)
1135 {
1136         return call_int_hook(task_setioprio, 0, p, ioprio);
1137 }
1138
1139 int security_task_getioprio(struct task_struct *p)
1140 {
1141         return call_int_hook(task_getioprio, 0, p);
1142 }
1143
1144 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1145                           unsigned int flags)
1146 {
1147         return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1148 }
1149
1150 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1151                 struct rlimit *new_rlim)
1152 {
1153         return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1154 }
1155
1156 int security_task_setscheduler(struct task_struct *p)
1157 {
1158         return call_int_hook(task_setscheduler, 0, p);
1159 }
1160
1161 int security_task_getscheduler(struct task_struct *p)
1162 {
1163         return call_int_hook(task_getscheduler, 0, p);
1164 }
1165
1166 int security_task_movememory(struct task_struct *p)
1167 {
1168         return call_int_hook(task_movememory, 0, p);
1169 }
1170
1171 int security_task_kill(struct task_struct *p, struct siginfo *info,
1172                         int sig, const struct cred *cred)
1173 {
1174         return call_int_hook(task_kill, 0, p, info, sig, cred);
1175 }
1176
1177 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1178                          unsigned long arg4, unsigned long arg5)
1179 {
1180         int thisrc;
1181         int rc = -ENOSYS;
1182         struct security_hook_list *hp;
1183
1184         hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1185                 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1186                 if (thisrc != -ENOSYS) {
1187                         rc = thisrc;
1188                         if (thisrc != 0)
1189                                 break;
1190                 }
1191         }
1192         return rc;
1193 }
1194
1195 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1196 {
1197         call_void_hook(task_to_inode, p, inode);
1198 }
1199
1200 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1201 {
1202         return call_int_hook(ipc_permission, 0, ipcp, flag);
1203 }
1204
1205 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1206 {
1207         *secid = 0;
1208         call_void_hook(ipc_getsecid, ipcp, secid);
1209 }
1210
1211 int security_msg_msg_alloc(struct msg_msg *msg)
1212 {
1213         return call_int_hook(msg_msg_alloc_security, 0, msg);
1214 }
1215
1216 void security_msg_msg_free(struct msg_msg *msg)
1217 {
1218         call_void_hook(msg_msg_free_security, msg);
1219 }
1220
1221 int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1222 {
1223         return call_int_hook(msg_queue_alloc_security, 0, msq);
1224 }
1225
1226 void security_msg_queue_free(struct kern_ipc_perm *msq)
1227 {
1228         call_void_hook(msg_queue_free_security, msq);
1229 }
1230
1231 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1232 {
1233         return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1234 }
1235
1236 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1237 {
1238         return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1239 }
1240
1241 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1242                                struct msg_msg *msg, int msqflg)
1243 {
1244         return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1245 }
1246
1247 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1248                                struct task_struct *target, long type, int mode)
1249 {
1250         return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1251 }
1252
1253 int security_shm_alloc(struct kern_ipc_perm *shp)
1254 {
1255         return call_int_hook(shm_alloc_security, 0, shp);
1256 }
1257
1258 void security_shm_free(struct kern_ipc_perm *shp)
1259 {
1260         call_void_hook(shm_free_security, shp);
1261 }
1262
1263 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
1264 {
1265         return call_int_hook(shm_associate, 0, shp, shmflg);
1266 }
1267
1268 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1269 {
1270         return call_int_hook(shm_shmctl, 0, shp, cmd);
1271 }
1272
1273 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
1274 {
1275         return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1276 }
1277
1278 int security_sem_alloc(struct kern_ipc_perm *sma)
1279 {
1280         return call_int_hook(sem_alloc_security, 0, sma);
1281 }
1282
1283 void security_sem_free(struct kern_ipc_perm *sma)
1284 {
1285         call_void_hook(sem_free_security, sma);
1286 }
1287
1288 int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1289 {
1290         return call_int_hook(sem_associate, 0, sma, semflg);
1291 }
1292
1293 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1294 {
1295         return call_int_hook(sem_semctl, 0, sma, cmd);
1296 }
1297
1298 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
1299                         unsigned nsops, int alter)
1300 {
1301         return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1302 }
1303
1304 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1305 {
1306         if (unlikely(inode && IS_PRIVATE(inode)))
1307                 return;
1308         call_void_hook(d_instantiate, dentry, inode);
1309 }
1310 EXPORT_SYMBOL(security_d_instantiate);
1311
1312 int security_getprocattr(struct task_struct *p, char *name, char **value)
1313 {
1314         return call_int_hook(getprocattr, -EINVAL, p, name, value);
1315 }
1316
1317 int security_setprocattr(const char *name, void *value, size_t size)
1318 {
1319         return call_int_hook(setprocattr, -EINVAL, name, value, size);
1320 }
1321
1322 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1323 {
1324         return call_int_hook(netlink_send, 0, sk, skb);
1325 }
1326
1327 int security_ismaclabel(const char *name)
1328 {
1329         return call_int_hook(ismaclabel, 0, name);
1330 }
1331 EXPORT_SYMBOL(security_ismaclabel);
1332
1333 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1334 {
1335         return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1336                                 seclen);
1337 }
1338 EXPORT_SYMBOL(security_secid_to_secctx);
1339
1340 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1341 {
1342         *secid = 0;
1343         return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1344 }
1345 EXPORT_SYMBOL(security_secctx_to_secid);
1346
1347 void security_release_secctx(char *secdata, u32 seclen)
1348 {
1349         call_void_hook(release_secctx, secdata, seclen);
1350 }
1351 EXPORT_SYMBOL(security_release_secctx);
1352
1353 void security_inode_invalidate_secctx(struct inode *inode)
1354 {
1355         call_void_hook(inode_invalidate_secctx, inode);
1356 }
1357 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1358
1359 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1360 {
1361         return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1362 }
1363 EXPORT_SYMBOL(security_inode_notifysecctx);
1364
1365 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1366 {
1367         return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1368 }
1369 EXPORT_SYMBOL(security_inode_setsecctx);
1370
1371 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1372 {
1373         return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1374 }
1375 EXPORT_SYMBOL(security_inode_getsecctx);
1376
1377 #ifdef CONFIG_SECURITY_NETWORK
1378
1379 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1380 {
1381         return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1382 }
1383 EXPORT_SYMBOL(security_unix_stream_connect);
1384
1385 int security_unix_may_send(struct socket *sock,  struct socket *other)
1386 {
1387         return call_int_hook(unix_may_send, 0, sock, other);
1388 }
1389 EXPORT_SYMBOL(security_unix_may_send);
1390
1391 int security_socket_create(int family, int type, int protocol, int kern)
1392 {
1393         return call_int_hook(socket_create, 0, family, type, protocol, kern);
1394 }
1395
1396 int security_socket_post_create(struct socket *sock, int family,
1397                                 int type, int protocol, int kern)
1398 {
1399         return call_int_hook(socket_post_create, 0, sock, family, type,
1400                                                 protocol, kern);
1401 }
1402
1403 int security_socket_socketpair(struct socket *socka, struct socket *sockb)
1404 {
1405         return call_int_hook(socket_socketpair, 0, socka, sockb);
1406 }
1407 EXPORT_SYMBOL(security_socket_socketpair);
1408
1409 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1410 {
1411         return call_int_hook(socket_bind, 0, sock, address, addrlen);
1412 }
1413
1414 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1415 {
1416         return call_int_hook(socket_connect, 0, sock, address, addrlen);
1417 }
1418
1419 int security_socket_listen(struct socket *sock, int backlog)
1420 {
1421         return call_int_hook(socket_listen, 0, sock, backlog);
1422 }
1423
1424 int security_socket_accept(struct socket *sock, struct socket *newsock)
1425 {
1426         return call_int_hook(socket_accept, 0, sock, newsock);
1427 }
1428
1429 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1430 {
1431         return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1432 }
1433
1434 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1435                             int size, int flags)
1436 {
1437         return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1438 }
1439
1440 int security_socket_getsockname(struct socket *sock)
1441 {
1442         return call_int_hook(socket_getsockname, 0, sock);
1443 }
1444
1445 int security_socket_getpeername(struct socket *sock)
1446 {
1447         return call_int_hook(socket_getpeername, 0, sock);
1448 }
1449
1450 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1451 {
1452         return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1453 }
1454
1455 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1456 {
1457         return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1458 }
1459
1460 int security_socket_shutdown(struct socket *sock, int how)
1461 {
1462         return call_int_hook(socket_shutdown, 0, sock, how);
1463 }
1464
1465 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1466 {
1467         return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1468 }
1469 EXPORT_SYMBOL(security_sock_rcv_skb);
1470
1471 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1472                                       int __user *optlen, unsigned len)
1473 {
1474         return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1475                                 optval, optlen, len);
1476 }
1477
1478 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1479 {
1480         return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1481                              skb, secid);
1482 }
1483 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1484
1485 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1486 {
1487         return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1488 }
1489
1490 void security_sk_free(struct sock *sk)
1491 {
1492         call_void_hook(sk_free_security, sk);
1493 }
1494
1495 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1496 {
1497         call_void_hook(sk_clone_security, sk, newsk);
1498 }
1499 EXPORT_SYMBOL(security_sk_clone);
1500
1501 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1502 {
1503         call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1504 }
1505 EXPORT_SYMBOL(security_sk_classify_flow);
1506
1507 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1508 {
1509         call_void_hook(req_classify_flow, req, fl);
1510 }
1511 EXPORT_SYMBOL(security_req_classify_flow);
1512
1513 void security_sock_graft(struct sock *sk, struct socket *parent)
1514 {
1515         call_void_hook(sock_graft, sk, parent);
1516 }
1517 EXPORT_SYMBOL(security_sock_graft);
1518
1519 int security_inet_conn_request(struct sock *sk,
1520                         struct sk_buff *skb, struct request_sock *req)
1521 {
1522         return call_int_hook(inet_conn_request, 0, sk, skb, req);
1523 }
1524 EXPORT_SYMBOL(security_inet_conn_request);
1525
1526 void security_inet_csk_clone(struct sock *newsk,
1527                         const struct request_sock *req)
1528 {
1529         call_void_hook(inet_csk_clone, newsk, req);
1530 }
1531
1532 void security_inet_conn_established(struct sock *sk,
1533                         struct sk_buff *skb)
1534 {
1535         call_void_hook(inet_conn_established, sk, skb);
1536 }
1537 EXPORT_SYMBOL(security_inet_conn_established);
1538
1539 int security_secmark_relabel_packet(u32 secid)
1540 {
1541         return call_int_hook(secmark_relabel_packet, 0, secid);
1542 }
1543 EXPORT_SYMBOL(security_secmark_relabel_packet);
1544
1545 void security_secmark_refcount_inc(void)
1546 {
1547         call_void_hook(secmark_refcount_inc);
1548 }
1549 EXPORT_SYMBOL(security_secmark_refcount_inc);
1550
1551 void security_secmark_refcount_dec(void)
1552 {
1553         call_void_hook(secmark_refcount_dec);
1554 }
1555 EXPORT_SYMBOL(security_secmark_refcount_dec);
1556
1557 int security_tun_dev_alloc_security(void **security)
1558 {
1559         return call_int_hook(tun_dev_alloc_security, 0, security);
1560 }
1561 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1562
1563 void security_tun_dev_free_security(void *security)
1564 {
1565         call_void_hook(tun_dev_free_security, security);
1566 }
1567 EXPORT_SYMBOL(security_tun_dev_free_security);
1568
1569 int security_tun_dev_create(void)
1570 {
1571         return call_int_hook(tun_dev_create, 0);
1572 }
1573 EXPORT_SYMBOL(security_tun_dev_create);
1574
1575 int security_tun_dev_attach_queue(void *security)
1576 {
1577         return call_int_hook(tun_dev_attach_queue, 0, security);
1578 }
1579 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1580
1581 int security_tun_dev_attach(struct sock *sk, void *security)
1582 {
1583         return call_int_hook(tun_dev_attach, 0, sk, security);
1584 }
1585 EXPORT_SYMBOL(security_tun_dev_attach);
1586
1587 int security_tun_dev_open(void *security)
1588 {
1589         return call_int_hook(tun_dev_open, 0, security);
1590 }
1591 EXPORT_SYMBOL(security_tun_dev_open);
1592
1593 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb)
1594 {
1595         return call_int_hook(sctp_assoc_request, 0, ep, skb);
1596 }
1597 EXPORT_SYMBOL(security_sctp_assoc_request);
1598
1599 int security_sctp_bind_connect(struct sock *sk, int optname,
1600                                struct sockaddr *address, int addrlen)
1601 {
1602         return call_int_hook(sctp_bind_connect, 0, sk, optname,
1603                              address, addrlen);
1604 }
1605 EXPORT_SYMBOL(security_sctp_bind_connect);
1606
1607 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1608                             struct sock *newsk)
1609 {
1610         call_void_hook(sctp_sk_clone, ep, sk, newsk);
1611 }
1612 EXPORT_SYMBOL(security_sctp_sk_clone);
1613
1614 #endif  /* CONFIG_SECURITY_NETWORK */
1615
1616 #ifdef CONFIG_SECURITY_INFINIBAND
1617
1618 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1619 {
1620         return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
1621 }
1622 EXPORT_SYMBOL(security_ib_pkey_access);
1623
1624 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1625 {
1626         return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
1627 }
1628 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
1629
1630 int security_ib_alloc_security(void **sec)
1631 {
1632         return call_int_hook(ib_alloc_security, 0, sec);
1633 }
1634 EXPORT_SYMBOL(security_ib_alloc_security);
1635
1636 void security_ib_free_security(void *sec)
1637 {
1638         call_void_hook(ib_free_security, sec);
1639 }
1640 EXPORT_SYMBOL(security_ib_free_security);
1641 #endif  /* CONFIG_SECURITY_INFINIBAND */
1642
1643 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1644
1645 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1646                                struct xfrm_user_sec_ctx *sec_ctx,
1647                                gfp_t gfp)
1648 {
1649         return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1650 }
1651 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1652
1653 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1654                               struct xfrm_sec_ctx **new_ctxp)
1655 {
1656         return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1657 }
1658
1659 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1660 {
1661         call_void_hook(xfrm_policy_free_security, ctx);
1662 }
1663 EXPORT_SYMBOL(security_xfrm_policy_free);
1664
1665 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1666 {
1667         return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1668 }
1669
1670 int security_xfrm_state_alloc(struct xfrm_state *x,
1671                               struct xfrm_user_sec_ctx *sec_ctx)
1672 {
1673         return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1674 }
1675 EXPORT_SYMBOL(security_xfrm_state_alloc);
1676
1677 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1678                                       struct xfrm_sec_ctx *polsec, u32 secid)
1679 {
1680         return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1681 }
1682
1683 int security_xfrm_state_delete(struct xfrm_state *x)
1684 {
1685         return call_int_hook(xfrm_state_delete_security, 0, x);
1686 }
1687 EXPORT_SYMBOL(security_xfrm_state_delete);
1688
1689 void security_xfrm_state_free(struct xfrm_state *x)
1690 {
1691         call_void_hook(xfrm_state_free_security, x);
1692 }
1693
1694 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1695 {
1696         return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1697 }
1698
1699 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1700                                        struct xfrm_policy *xp,
1701                                        const struct flowi *fl)
1702 {
1703         struct security_hook_list *hp;
1704         int rc = 1;
1705
1706         /*
1707          * Since this function is expected to return 0 or 1, the judgment
1708          * becomes difficult if multiple LSMs supply this call. Fortunately,
1709          * we can use the first LSM's judgment because currently only SELinux
1710          * supplies this call.
1711          *
1712          * For speed optimization, we explicitly break the loop rather than
1713          * using the macro
1714          */
1715         hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1716                                 list) {
1717                 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1718                 break;
1719         }
1720         return rc;
1721 }
1722
1723 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1724 {
1725         return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1726 }
1727
1728 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1729 {
1730         int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1731                                 0);
1732
1733         BUG_ON(rc);
1734 }
1735 EXPORT_SYMBOL(security_skb_classify_flow);
1736
1737 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1738
1739 #ifdef CONFIG_KEYS
1740
1741 int security_key_alloc(struct key *key, const struct cred *cred,
1742                        unsigned long flags)
1743 {
1744         return call_int_hook(key_alloc, 0, key, cred, flags);
1745 }
1746
1747 void security_key_free(struct key *key)
1748 {
1749         call_void_hook(key_free, key);
1750 }
1751
1752 int security_key_permission(key_ref_t key_ref,
1753                             const struct cred *cred, unsigned perm)
1754 {
1755         return call_int_hook(key_permission, 0, key_ref, cred, perm);
1756 }
1757
1758 int security_key_getsecurity(struct key *key, char **_buffer)
1759 {
1760         *_buffer = NULL;
1761         return call_int_hook(key_getsecurity, 0, key, _buffer);
1762 }
1763
1764 #endif  /* CONFIG_KEYS */
1765
1766 #ifdef CONFIG_AUDIT
1767
1768 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1769 {
1770         return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1771 }
1772
1773 int security_audit_rule_known(struct audit_krule *krule)
1774 {
1775         return call_int_hook(audit_rule_known, 0, krule);
1776 }
1777
1778 void security_audit_rule_free(void *lsmrule)
1779 {
1780         call_void_hook(audit_rule_free, lsmrule);
1781 }
1782
1783 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1784                               struct audit_context *actx)
1785 {
1786         return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1787                                 actx);
1788 }
1789 #endif /* CONFIG_AUDIT */
1790
1791 #ifdef CONFIG_BPF_SYSCALL
1792 int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
1793 {
1794         return call_int_hook(bpf, 0, cmd, attr, size);
1795 }
1796 int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1797 {
1798         return call_int_hook(bpf_map, 0, map, fmode);
1799 }
1800 int security_bpf_prog(struct bpf_prog *prog)
1801 {
1802         return call_int_hook(bpf_prog, 0, prog);
1803 }
1804 int security_bpf_map_alloc(struct bpf_map *map)
1805 {
1806         return call_int_hook(bpf_map_alloc_security, 0, map);
1807 }
1808 int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1809 {
1810         return call_int_hook(bpf_prog_alloc_security, 0, aux);
1811 }
1812 void security_bpf_map_free(struct bpf_map *map)
1813 {
1814         call_void_hook(bpf_map_free_security, map);
1815 }
1816 void security_bpf_prog_free(struct bpf_prog_aux *aux)
1817 {
1818         call_void_hook(bpf_prog_free_security, aux);
1819 }
1820 #endif /* CONFIG_BPF_SYSCALL */