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