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 #define pr_fmt(fmt) "LSM: " fmt
  16
  17 #include <linux/bpf.h>
  18 #include <linux/capability.h>
  19 #include <linux/dcache.h>
  20 #include <linux/export.h>
  21 #include <linux/init.h>
  22 #include <linux/kernel.h>
  23 #include <linux/lsm_hooks.h>
  24 #include <linux/integrity.h>
  25 #include <linux/ima.h>
  26 #include <linux/evm.h>
  27 #include <linux/fsnotify.h>
  28 #include <linux/mman.h>
  29 #include <linux/mount.h>
  30 #include <linux/personality.h>
  31 #include <linux/backing-dev.h>
  32 #include <linux/string.h>
  33 #include <net/flow.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 __initdata bool debug;
  49 #define init_debug(...)                                         \
  50         do {                                                    \
  51                 if (debug)                                      \
  52                         pr_info(__VA_ARGS__);                   \
  53         } while (0)
  54
  55 static void __init major_lsm_init(void)
  56 {
  57         struct lsm_info *lsm;
  58         int ret;
  59
  60         for (lsm = __start_lsm_info; lsm < __end_lsm_info; lsm++) {
  61                 init_debug("initializing %s\n", lsm->name);
  62                 ret = lsm->init();
  63                 WARN(ret, "%s failed to initialize: %d\n", lsm->name, ret);
  64         }
  65 }
  66
  67 /**
  68  * security_init - initializes the security framework
  69  *
  70  * This should be called early in the kernel initialization sequence.
  71  */
  72 int __init security_init(void)
  73 {
  74         int i;
  75         struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
  76
  77         pr_info("Security Framework initializing\n");
  78
  79         for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
  80              i++)
  81                 INIT_HLIST_HEAD(&list[i]);
  82
  83         /*
  84          * Load minor LSMs, with the capability module always first.
  85          */
  86         capability_add_hooks();
  87         yama_add_hooks();
  88         loadpin_add_hooks();
  89
  90         /*
  91          * Load all the remaining security modules.
  92          */
  93         major_lsm_init();
  94
  95         return 0;
  96 }
  97
  98 /* Save user chosen LSM */
  99 static int __init choose_lsm(char *str)
 100 {
 101         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
 102         return 1;
 103 }
 104 __setup("security=", choose_lsm);
 105
 106 /* Enable LSM order debugging. */
 107 static int __init enable_debug(char *str)
 108 {
 109         debug = true;
 110         return 1;
 111 }
 112 __setup("lsm.debug", enable_debug);
 113
 114 static bool match_last_lsm(const char *list, const char *lsm)
 115 {
 116         const char *last;
 117
 118         if (WARN_ON(!list || !lsm))
 119                 return false;
 120         last = strrchr(list, ',');
 121         if (last)
 122                 /* Pass the comma, strcmp() will check for '\0' */
 123                 last++;
 124         else
 125                 last = list;
 126         return !strcmp(last, lsm);
 127 }
 128
 129 static int lsm_append(char *new, char **result)
 130 {
 131         char *cp;
 132
 133         if (*result == NULL) {
 134                 *result = kstrdup(new, GFP_KERNEL);
 135                 if (*result == NULL)
 136                         return -ENOMEM;
 137         } else {
 138                 /* Check if it is the last registered name */
 139                 if (match_last_lsm(*result, new))
 140                         return 0;
 141                 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
 142                 if (cp == NULL)
 143                         return -ENOMEM;
 144                 kfree(*result);
 145                 *result = cp;
 146         }
 147         return 0;
 148 }
 149
 150 /**
 151  * security_module_enable - Load given security module on boot ?
 152  * @module: the name of the module
 153  *
 154  * Each LSM must pass this method before registering its own operations
 155  * to avoid security registration races. This method may also be used
 156  * to check if your LSM is currently loaded during kernel initialization.
 157  *
 158  * Returns:
 159  *
 160  * true if:
 161  *
 162  * - The passed LSM is the one chosen by user at boot time,
 163  * - or the passed LSM is configured as the default and the user did not
 164  *   choose an alternate LSM at boot time.
 165  *
 166  * Otherwise, return false.
 167  */
 168 int __init security_module_enable(const char *module)
 169 {
 170         return !strcmp(module, chosen_lsm);
 171 }
 172
 173 /**
 174  * security_add_hooks - Add a modules hooks to the hook lists.
 175  * @hooks: the hooks to add
 176  * @count: the number of hooks to add
 177  * @lsm: the name of the security module
 178  *
 179  * Each LSM has to register its hooks with the infrastructure.
 180  */
 181 void __init security_add_hooks(struct security_hook_list *hooks, int count,
 182                                 char *lsm)
 183 {
 184         int i;
 185
 186         for (i = 0; i < count; i++) {
 187                 hooks[i].lsm = lsm;
 188                 hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
 189         }
 190         if (lsm_append(lsm, &lsm_names) < 0)
 191                 panic("%s - Cannot get early memory.\n", __func__);
 192 }
 193
 194 int call_lsm_notifier(enum lsm_event event, void *data)
 195 {
 196         return atomic_notifier_call_chain(&lsm_notifier_chain, event, data);
 197 }
 198 EXPORT_SYMBOL(call_lsm_notifier);
 199
 200 int register_lsm_notifier(struct notifier_block *nb)
 201 {
 202         return atomic_notifier_chain_register(&lsm_notifier_chain, nb);
 203 }
 204 EXPORT_SYMBOL(register_lsm_notifier);
 205
 206 int unregister_lsm_notifier(struct notifier_block *nb)
 207 {
 208         return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb);
 209 }
 210 EXPORT_SYMBOL(unregister_lsm_notifier);
 211
 212 /*
 213  * Hook list operation macros.
 214  *
 215  * call_void_hook:
 216  *      This is a hook that does not return a value.
 217  *
 218  * call_int_hook:
 219  *      This is a hook that returns a value.
 220  */
 221
 222 #define call_void_hook(FUNC, ...)                               \
 223         do {                                                    \
 224                 struct security_hook_list *P;                   \
 225                                                                 \
 226                 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
 227                         P->hook.FUNC(__VA_ARGS__);              \
 228         } while (0)
 229
 230 #define call_int_hook(FUNC, IRC, ...) ({                        \
 231         int RC = IRC;                                           \
 232         do {                                                    \
 233                 struct security_hook_list *P;                   \
 234                                                                 \
 235                 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
 236                         RC = P->hook.FUNC(__VA_ARGS__);         \
 237                         if (RC != 0)                            \
 238                                 break;                          \
 239                 }                                               \
 240         } while (0);                                            \
 241         RC;                                                     \
 242 })
 243
 244 /* Security operations */
 245
 246 int security_binder_set_context_mgr(struct task_struct *mgr)
 247 {
 248         return call_int_hook(binder_set_context_mgr, 0, mgr);
 249 }
 250
 251 int security_binder_transaction(struct task_struct *from,
 252                                 struct task_struct *to)
 253 {
 254         return call_int_hook(binder_transaction, 0, from, to);
 255 }
 256
 257 int security_binder_transfer_binder(struct task_struct *from,
 258                                     struct task_struct *to)
 259 {
 260         return call_int_hook(binder_transfer_binder, 0, from, to);
 261 }
 262
 263 int security_binder_transfer_file(struct task_struct *from,
 264                                   struct task_struct *to, struct file *file)
 265 {
 266         return call_int_hook(binder_transfer_file, 0, from, to, file);
 267 }
 268
 269 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 270 {
 271         return call_int_hook(ptrace_access_check, 0, child, mode);
 272 }
 273
 274 int security_ptrace_traceme(struct task_struct *parent)
 275 {
 276         return call_int_hook(ptrace_traceme, 0, parent);
 277 }
 278
 279 int security_capget(struct task_struct *target,
 280                      kernel_cap_t *effective,
 281                      kernel_cap_t *inheritable,
 282                      kernel_cap_t *permitted)
 283 {
 284         return call_int_hook(capget, 0, target,
 285                                 effective, inheritable, permitted);
 286 }
 287
 288 int security_capset(struct cred *new, const struct cred *old,
 289                     const kernel_cap_t *effective,
 290                     const kernel_cap_t *inheritable,
 291                     const kernel_cap_t *permitted)
 292 {
 293         return call_int_hook(capset, 0, new, old,
 294                                 effective, inheritable, permitted);
 295 }
 296
 297 int security_capable(const struct cred *cred, struct user_namespace *ns,
 298                      int cap)
 299 {
 300         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
 301 }
 302
 303 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 304                              int cap)
 305 {
 306         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
 307 }
 308
 309 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 310 {
 311         return call_int_hook(quotactl, 0, cmds, type, id, sb);
 312 }
 313
 314 int security_quota_on(struct dentry *dentry)
 315 {
 316         return call_int_hook(quota_on, 0, dentry);
 317 }
 318
 319 int security_syslog(int type)
 320 {
 321         return call_int_hook(syslog, 0, type);
 322 }
 323
 324 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
 325 {
 326         return call_int_hook(settime, 0, ts, tz);
 327 }
 328
 329 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 330 {
 331         struct security_hook_list *hp;
 332         int cap_sys_admin = 1;
 333         int rc;
 334
 335         /*
 336          * The module will respond with a positive value if
 337          * it thinks the __vm_enough_memory() call should be
 338          * made with the cap_sys_admin set. If all of the modules
 339          * agree that it should be set it will. If any module
 340          * thinks it should not be set it won't.
 341          */
 342         hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
 343                 rc = hp->hook.vm_enough_memory(mm, pages);
 344                 if (rc <= 0) {
 345                         cap_sys_admin = 0;
 346                         break;
 347                 }
 348         }
 349         return __vm_enough_memory(mm, pages, cap_sys_admin);
 350 }
 351
 352 int security_bprm_set_creds(struct linux_binprm *bprm)
 353 {
 354         return call_int_hook(bprm_set_creds, 0, bprm);
 355 }
 356
 357 int security_bprm_check(struct linux_binprm *bprm)
 358 {
 359         int ret;
 360
 361         ret = call_int_hook(bprm_check_security, 0, bprm);
 362         if (ret)
 363                 return ret;
 364         return ima_bprm_check(bprm);
 365 }
 366
 367 void security_bprm_committing_creds(struct linux_binprm *bprm)
 368 {
 369         call_void_hook(bprm_committing_creds, bprm);
 370 }
 371
 372 void security_bprm_committed_creds(struct linux_binprm *bprm)
 373 {
 374         call_void_hook(bprm_committed_creds, bprm);
 375 }
 376
 377 int security_sb_alloc(struct super_block *sb)
 378 {
 379         return call_int_hook(sb_alloc_security, 0, sb);
 380 }
 381
 382 void security_sb_free(struct super_block *sb)
 383 {
 384         call_void_hook(sb_free_security, sb);
 385 }
 386
 387 int security_sb_copy_data(char *orig, char *copy)
 388 {
 389         return call_int_hook(sb_copy_data, 0, orig, copy);
 390 }
 391 EXPORT_SYMBOL(security_sb_copy_data);
 392
 393 int security_sb_remount(struct super_block *sb, void *data)
 394 {
 395         return call_int_hook(sb_remount, 0, sb, data);
 396 }
 397
 398 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 399 {
 400         return call_int_hook(sb_kern_mount, 0, sb, flags, data);
 401 }
 402
 403 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 404 {
 405         return call_int_hook(sb_show_options, 0, m, sb);
 406 }
 407
 408 int security_sb_statfs(struct dentry *dentry)
 409 {
 410         return call_int_hook(sb_statfs, 0, dentry);
 411 }
 412
 413 int security_sb_mount(const char *dev_name, const struct path *path,
 414                        const char *type, unsigned long flags, void *data)
 415 {
 416         return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
 417 }
 418
 419 int security_sb_umount(struct vfsmount *mnt, int flags)
 420 {
 421         return call_int_hook(sb_umount, 0, mnt, flags);
 422 }
 423
 424 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
 425 {
 426         return call_int_hook(sb_pivotroot, 0, old_path, new_path);
 427 }
 428
 429 int security_sb_set_mnt_opts(struct super_block *sb,
 430                                 struct security_mnt_opts *opts,
 431                                 unsigned long kern_flags,
 432                                 unsigned long *set_kern_flags)
 433 {
 434         return call_int_hook(sb_set_mnt_opts,
 435                                 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
 436                                 opts, kern_flags, set_kern_flags);
 437 }
 438 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 439
 440 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 441                                 struct super_block *newsb,
 442                                 unsigned long kern_flags,
 443                                 unsigned long *set_kern_flags)
 444 {
 445         return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
 446                                 kern_flags, set_kern_flags);
 447 }
 448 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 449
 450 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 451 {
 452         return call_int_hook(sb_parse_opts_str, 0, options, opts);
 453 }
 454 EXPORT_SYMBOL(security_sb_parse_opts_str);
 455
 456 int security_inode_alloc(struct inode *inode)
 457 {
 458         inode->i_security = NULL;
 459         return call_int_hook(inode_alloc_security, 0, inode);
 460 }
 461
 462 void security_inode_free(struct inode *inode)
 463 {
 464         integrity_inode_free(inode);
 465         call_void_hook(inode_free_security, inode);
 466 }
 467
 468 int security_dentry_init_security(struct dentry *dentry, int mode,
 469                                         const struct qstr *name, void **ctx,
 470                                         u32 *ctxlen)
 471 {
 472         return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
 473                                 name, ctx, ctxlen);
 474 }
 475 EXPORT_SYMBOL(security_dentry_init_security);
 476
 477 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 478                                     struct qstr *name,
 479                                     const struct cred *old, struct cred *new)
 480 {
 481         return call_int_hook(dentry_create_files_as, 0, dentry, mode,
 482                                 name, old, new);
 483 }
 484 EXPORT_SYMBOL(security_dentry_create_files_as);
 485
 486 int security_inode_init_security(struct inode *inode, struct inode *dir,
 487                                  const struct qstr *qstr,
 488                                  const initxattrs initxattrs, void *fs_data)
 489 {
 490         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
 491         struct xattr *lsm_xattr, *evm_xattr, *xattr;
 492         int ret;
 493
 494         if (unlikely(IS_PRIVATE(inode)))
 495                 return 0;
 496
 497         if (!initxattrs)
 498                 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
 499                                      dir, qstr, NULL, NULL, NULL);
 500         memset(new_xattrs, 0, sizeof(new_xattrs));
 501         lsm_xattr = new_xattrs;
 502         ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
 503                                                 &lsm_xattr->name,
 504                                                 &lsm_xattr->value,
 505                                                 &lsm_xattr->value_len);
 506         if (ret)
 507                 goto out;
 508
 509         evm_xattr = lsm_xattr + 1;
 510         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
 511         if (ret)
 512                 goto out;
 513         ret = initxattrs(inode, new_xattrs, fs_data);
 514 out:
 515         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
 516                 kfree(xattr->value);
 517         return (ret == -EOPNOTSUPP) ? 0 : ret;
 518 }
 519 EXPORT_SYMBOL(security_inode_init_security);
 520
 521 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 522                                      const struct qstr *qstr, const char **name,
 523                                      void **value, size_t *len)
 524 {
 525         if (unlikely(IS_PRIVATE(inode)))
 526                 return -EOPNOTSUPP;
 527         return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
 528                              qstr, name, value, len);
 529 }
 530 EXPORT_SYMBOL(security_old_inode_init_security);
 531
 532 #ifdef CONFIG_SECURITY_PATH
 533 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
 534                         unsigned int dev)
 535 {
 536         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 537                 return 0;
 538         return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
 539 }
 540 EXPORT_SYMBOL(security_path_mknod);
 541
 542 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
 543 {
 544         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 545                 return 0;
 546         return call_int_hook(path_mkdir, 0, dir, dentry, mode);
 547 }
 548 EXPORT_SYMBOL(security_path_mkdir);
 549
 550 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
 551 {
 552         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 553                 return 0;
 554         return call_int_hook(path_rmdir, 0, dir, dentry);
 555 }
 556
 557 int security_path_unlink(const struct path *dir, struct dentry *dentry)
 558 {
 559         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 560                 return 0;
 561         return call_int_hook(path_unlink, 0, dir, dentry);
 562 }
 563 EXPORT_SYMBOL(security_path_unlink);
 564
 565 int security_path_symlink(const struct path *dir, struct dentry *dentry,
 566                           const char *old_name)
 567 {
 568         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 569                 return 0;
 570         return call_int_hook(path_symlink, 0, dir, dentry, old_name);
 571 }
 572
 573 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
 574                        struct dentry *new_dentry)
 575 {
 576         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 577                 return 0;
 578         return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
 579 }
 580
 581 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
 582                          const struct path *new_dir, struct dentry *new_dentry,
 583                          unsigned int flags)
 584 {
 585         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 586                      (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 587                 return 0;
 588
 589         if (flags & RENAME_EXCHANGE) {
 590                 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
 591                                         old_dir, old_dentry);
 592                 if (err)
 593                         return err;
 594         }
 595
 596         return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
 597                                 new_dentry);
 598 }
 599 EXPORT_SYMBOL(security_path_rename);
 600
 601 int security_path_truncate(const struct path *path)
 602 {
 603         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 604                 return 0;
 605         return call_int_hook(path_truncate, 0, path);
 606 }
 607
 608 int security_path_chmod(const struct path *path, umode_t mode)
 609 {
 610         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 611                 return 0;
 612         return call_int_hook(path_chmod, 0, path, mode);
 613 }
 614
 615 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 616 {
 617         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 618                 return 0;
 619         return call_int_hook(path_chown, 0, path, uid, gid);
 620 }
 621
 622 int security_path_chroot(const struct path *path)
 623 {
 624         return call_int_hook(path_chroot, 0, path);
 625 }
 626 #endif
 627
 628 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
 629 {
 630         if (unlikely(IS_PRIVATE(dir)))
 631                 return 0;
 632         return call_int_hook(inode_create, 0, dir, dentry, mode);
 633 }
 634 EXPORT_SYMBOL_GPL(security_inode_create);
 635
 636 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 637                          struct dentry *new_dentry)
 638 {
 639         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 640                 return 0;
 641         return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
 642 }
 643
 644 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 645 {
 646         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 647                 return 0;
 648         return call_int_hook(inode_unlink, 0, dir, dentry);
 649 }
 650
 651 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 652                             const char *old_name)
 653 {
 654         if (unlikely(IS_PRIVATE(dir)))
 655                 return 0;
 656         return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
 657 }
 658
 659 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 660 {
 661         if (unlikely(IS_PRIVATE(dir)))
 662                 return 0;
 663         return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
 664 }
 665 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 666
 667 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 668 {
 669         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 670                 return 0;
 671         return call_int_hook(inode_rmdir, 0, dir, dentry);
 672 }
 673
 674 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
 675 {
 676         if (unlikely(IS_PRIVATE(dir)))
 677                 return 0;
 678         return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
 679 }
 680
 681 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 682                            struct inode *new_dir, struct dentry *new_dentry,
 683                            unsigned int flags)
 684 {
 685         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 686             (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 687                 return 0;
 688
 689         if (flags & RENAME_EXCHANGE) {
 690                 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
 691                                                      old_dir, old_dentry);
 692                 if (err)
 693                         return err;
 694         }
 695
 696         return call_int_hook(inode_rename, 0, old_dir, old_dentry,
 697                                            new_dir, new_dentry);
 698 }
 699
 700 int security_inode_readlink(struct dentry *dentry)
 701 {
 702         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 703                 return 0;
 704         return call_int_hook(inode_readlink, 0, dentry);
 705 }
 706
 707 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 708                                bool rcu)
 709 {
 710         if (unlikely(IS_PRIVATE(inode)))
 711                 return 0;
 712         return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
 713 }
 714
 715 int security_inode_permission(struct inode *inode, int mask)
 716 {
 717         if (unlikely(IS_PRIVATE(inode)))
 718                 return 0;
 719         return call_int_hook(inode_permission, 0, inode, mask);
 720 }
 721
 722 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 723 {
 724         int ret;
 725
 726         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 727                 return 0;
 728         ret = call_int_hook(inode_setattr, 0, dentry, attr);
 729         if (ret)
 730                 return ret;
 731         return evm_inode_setattr(dentry, attr);
 732 }
 733 EXPORT_SYMBOL_GPL(security_inode_setattr);
 734
 735 int security_inode_getattr(const struct path *path)
 736 {
 737         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 738                 return 0;
 739         return call_int_hook(inode_getattr, 0, path);
 740 }
 741
 742 int security_inode_setxattr(struct dentry *dentry, const char *name,
 743                             const void *value, size_t size, int flags)
 744 {
 745         int ret;
 746
 747         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 748                 return 0;
 749         /*
 750          * SELinux and Smack integrate the cap call,
 751          * so assume that all LSMs supplying this call do so.
 752          */
 753         ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
 754                                 flags);
 755
 756         if (ret == 1)
 757                 ret = cap_inode_setxattr(dentry, name, value, size, flags);
 758         if (ret)
 759                 return ret;
 760         ret = ima_inode_setxattr(dentry, name, value, size);
 761         if (ret)
 762                 return ret;
 763         return evm_inode_setxattr(dentry, name, value, size);
 764 }
 765
 766 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 767                                   const void *value, size_t size, int flags)
 768 {
 769         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 770                 return;
 771         call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
 772         evm_inode_post_setxattr(dentry, name, value, size);
 773 }
 774
 775 int security_inode_getxattr(struct dentry *dentry, const char *name)
 776 {
 777         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 778                 return 0;
 779         return call_int_hook(inode_getxattr, 0, dentry, name);
 780 }
 781
 782 int security_inode_listxattr(struct dentry *dentry)
 783 {
 784         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 785                 return 0;
 786         return call_int_hook(inode_listxattr, 0, dentry);
 787 }
 788
 789 int security_inode_removexattr(struct dentry *dentry, const char *name)
 790 {
 791         int ret;
 792
 793         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 794                 return 0;
 795         /*
 796          * SELinux and Smack integrate the cap call,
 797          * so assume that all LSMs supplying this call do so.
 798          */
 799         ret = call_int_hook(inode_removexattr, 1, dentry, name);
 800         if (ret == 1)
 801                 ret = cap_inode_removexattr(dentry, name);
 802         if (ret)
 803                 return ret;
 804         ret = ima_inode_removexattr(dentry, name);
 805         if (ret)
 806                 return ret;
 807         return evm_inode_removexattr(dentry, name);
 808 }
 809
 810 int security_inode_need_killpriv(struct dentry *dentry)
 811 {
 812         return call_int_hook(inode_need_killpriv, 0, dentry);
 813 }
 814
 815 int security_inode_killpriv(struct dentry *dentry)
 816 {
 817         return call_int_hook(inode_killpriv, 0, dentry);
 818 }
 819
 820 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 821 {
 822         struct security_hook_list *hp;
 823         int rc;
 824
 825         if (unlikely(IS_PRIVATE(inode)))
 826                 return -EOPNOTSUPP;
 827         /*
 828          * Only one module will provide an attribute with a given name.
 829          */
 830         hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
 831                 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
 832                 if (rc != -EOPNOTSUPP)
 833                         return rc;
 834         }
 835         return -EOPNOTSUPP;
 836 }
 837
 838 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 839 {
 840         struct security_hook_list *hp;
 841         int rc;
 842
 843         if (unlikely(IS_PRIVATE(inode)))
 844                 return -EOPNOTSUPP;
 845         /*
 846          * Only one module will provide an attribute with a given name.
 847          */
 848         hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
 849                 rc = hp->hook.inode_setsecurity(inode, name, value, size,
 850                                                                 flags);
 851                 if (rc != -EOPNOTSUPP)
 852                         return rc;
 853         }
 854         return -EOPNOTSUPP;
 855 }
 856
 857 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 858 {
 859         if (unlikely(IS_PRIVATE(inode)))
 860                 return 0;
 861         return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
 862 }
 863 EXPORT_SYMBOL(security_inode_listsecurity);
 864
 865 void security_inode_getsecid(struct inode *inode, u32 *secid)
 866 {
 867         call_void_hook(inode_getsecid, inode, secid);
 868 }
 869
 870 int security_inode_copy_up(struct dentry *src, struct cred **new)
 871 {
 872         return call_int_hook(inode_copy_up, 0, src, new);
 873 }
 874 EXPORT_SYMBOL(security_inode_copy_up);
 875
 876 int security_inode_copy_up_xattr(const char *name)
 877 {
 878         return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
 879 }
 880 EXPORT_SYMBOL(security_inode_copy_up_xattr);
 881
 882 int security_file_permission(struct file *file, int mask)
 883 {
 884         int ret;
 885
 886         ret = call_int_hook(file_permission, 0, file, mask);
 887         if (ret)
 888                 return ret;
 889
 890         return fsnotify_perm(file, mask);
 891 }
 892
 893 int security_file_alloc(struct file *file)
 894 {
 895         return call_int_hook(file_alloc_security, 0, file);
 896 }
 897
 898 void security_file_free(struct file *file)
 899 {
 900         call_void_hook(file_free_security, file);
 901 }
 902
 903 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 904 {
 905         return call_int_hook(file_ioctl, 0, file, cmd, arg);
 906 }
 907
 908 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
 909 {
 910         /*
 911          * Does we have PROT_READ and does the application expect
 912          * it to imply PROT_EXEC?  If not, nothing to talk about...
 913          */
 914         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
 915                 return prot;
 916         if (!(current->personality & READ_IMPLIES_EXEC))
 917                 return prot;
 918         /*
 919          * if that's an anonymous mapping, let it.
 920          */
 921         if (!file)
 922                 return prot | PROT_EXEC;
 923         /*
 924          * ditto if it's not on noexec mount, except that on !MMU we need
 925          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
 926          */
 927         if (!path_noexec(&file->f_path)) {
 928 #ifndef CONFIG_MMU
 929                 if (file->f_op->mmap_capabilities) {
 930                         unsigned caps = file->f_op->mmap_capabilities(file);
 931                         if (!(caps & NOMMU_MAP_EXEC))
 932                                 return prot;
 933                 }
 934 #endif
 935                 return prot | PROT_EXEC;
 936         }
 937         /* anything on noexec mount won't get PROT_EXEC */
 938         return prot;
 939 }
 940
 941 int security_mmap_file(struct file *file, unsigned long prot,
 942                         unsigned long flags)
 943 {
 944         int ret;
 945         ret = call_int_hook(mmap_file, 0, file, prot,
 946                                         mmap_prot(file, prot), flags);
 947         if (ret)
 948                 return ret;
 949         return ima_file_mmap(file, prot);
 950 }
 951
 952 int security_mmap_addr(unsigned long addr)
 953 {
 954         return call_int_hook(mmap_addr, 0, addr);
 955 }
 956
 957 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 958                             unsigned long prot)
 959 {
 960         return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
 961 }
 962
 963 int security_file_lock(struct file *file, unsigned int cmd)
 964 {
 965         return call_int_hook(file_lock, 0, file, cmd);
 966 }
 967
 968 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 969 {
 970         return call_int_hook(file_fcntl, 0, file, cmd, arg);
 971 }
 972
 973 void security_file_set_fowner(struct file *file)
 974 {
 975         call_void_hook(file_set_fowner, file);
 976 }
 977
 978 int security_file_send_sigiotask(struct task_struct *tsk,
 979                                   struct fown_struct *fown, int sig)
 980 {
 981         return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
 982 }
 983
 984 int security_file_receive(struct file *file)
 985 {
 986         return call_int_hook(file_receive, 0, file);
 987 }
 988
 989 int security_file_open(struct file *file)
 990 {
 991         int ret;
 992
 993         ret = call_int_hook(file_open, 0, file);
 994         if (ret)
 995                 return ret;
 996
 997         return fsnotify_perm(file, MAY_OPEN);
 998 }
 999
1000 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
1001 {
1002         return call_int_hook(task_alloc, 0, task, clone_flags);
1003 }
1004
1005 void security_task_free(struct task_struct *task)
1006 {
1007         call_void_hook(task_free, task);
1008 }
1009
1010 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
1011 {
1012         return call_int_hook(cred_alloc_blank, 0, cred, gfp);
1013 }
1014
1015 void security_cred_free(struct cred *cred)
1016 {
1017         call_void_hook(cred_free, cred);
1018 }
1019
1020 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1021 {
1022         return call_int_hook(cred_prepare, 0, new, old, gfp);
1023 }
1024
1025 void security_transfer_creds(struct cred *new, const struct cred *old)
1026 {
1027         call_void_hook(cred_transfer, new, old);
1028 }
1029
1030 void security_cred_getsecid(const struct cred *c, u32 *secid)
1031 {
1032         *secid = 0;
1033         call_void_hook(cred_getsecid, c, secid);
1034 }
1035 EXPORT_SYMBOL(security_cred_getsecid);
1036
1037 int security_kernel_act_as(struct cred *new, u32 secid)
1038 {
1039         return call_int_hook(kernel_act_as, 0, new, secid);
1040 }
1041
1042 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1043 {
1044         return call_int_hook(kernel_create_files_as, 0, new, inode);
1045 }
1046
1047 int security_kernel_module_request(char *kmod_name)
1048 {
1049         int ret;
1050
1051         ret = call_int_hook(kernel_module_request, 0, kmod_name);
1052         if (ret)
1053                 return ret;
1054         return integrity_kernel_module_request(kmod_name);
1055 }
1056
1057 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1058 {
1059         int ret;
1060
1061         ret = call_int_hook(kernel_read_file, 0, file, id);
1062         if (ret)
1063                 return ret;
1064         return ima_read_file(file, id);
1065 }
1066 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1067
1068 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1069                                    enum kernel_read_file_id id)
1070 {
1071         int ret;
1072
1073         ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1074         if (ret)
1075                 return ret;
1076         return ima_post_read_file(file, buf, size, id);
1077 }
1078 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1079
1080 int security_kernel_load_data(enum kernel_load_data_id id)
1081 {
1082         int ret;
1083
1084         ret = call_int_hook(kernel_load_data, 0, id);
1085         if (ret)
1086                 return ret;
1087         return ima_load_data(id);
1088 }
1089 EXPORT_SYMBOL_GPL(security_kernel_load_data);
1090
1091 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1092                              int flags)
1093 {
1094         return call_int_hook(task_fix_setuid, 0, new, old, flags);
1095 }
1096
1097 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1098 {
1099         return call_int_hook(task_setpgid, 0, p, pgid);
1100 }
1101
1102 int security_task_getpgid(struct task_struct *p)
1103 {
1104         return call_int_hook(task_getpgid, 0, p);
1105 }
1106
1107 int security_task_getsid(struct task_struct *p)
1108 {
1109         return call_int_hook(task_getsid, 0, p);
1110 }
1111
1112 void security_task_getsecid(struct task_struct *p, u32 *secid)
1113 {
1114         *secid = 0;
1115         call_void_hook(task_getsecid, p, secid);
1116 }
1117 EXPORT_SYMBOL(security_task_getsecid);
1118
1119 int security_task_setnice(struct task_struct *p, int nice)
1120 {
1121         return call_int_hook(task_setnice, 0, p, nice);
1122 }
1123
1124 int security_task_setioprio(struct task_struct *p, int ioprio)
1125 {
1126         return call_int_hook(task_setioprio, 0, p, ioprio);
1127 }
1128
1129 int security_task_getioprio(struct task_struct *p)
1130 {
1131         return call_int_hook(task_getioprio, 0, p);
1132 }
1133
1134 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1135                           unsigned int flags)
1136 {
1137         return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1138 }
1139
1140 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1141                 struct rlimit *new_rlim)
1142 {
1143         return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1144 }
1145
1146 int security_task_setscheduler(struct task_struct *p)
1147 {
1148         return call_int_hook(task_setscheduler, 0, p);
1149 }
1150
1151 int security_task_getscheduler(struct task_struct *p)
1152 {
1153         return call_int_hook(task_getscheduler, 0, p);
1154 }
1155
1156 int security_task_movememory(struct task_struct *p)
1157 {
1158         return call_int_hook(task_movememory, 0, p);
1159 }
1160
1161 int security_task_kill(struct task_struct *p, struct kernel_siginfo *info,
1162                         int sig, const struct cred *cred)
1163 {
1164         return call_int_hook(task_kill, 0, p, info, sig, cred);
1165 }
1166
1167 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1168                          unsigned long arg4, unsigned long arg5)
1169 {
1170         int thisrc;
1171         int rc = -ENOSYS;
1172         struct security_hook_list *hp;
1173
1174         hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1175                 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1176                 if (thisrc != -ENOSYS) {
1177                         rc = thisrc;
1178                         if (thisrc != 0)
1179                                 break;
1180                 }
1181         }
1182         return rc;
1183 }
1184
1185 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1186 {
1187         call_void_hook(task_to_inode, p, inode);
1188 }
1189
1190 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1191 {
1192         return call_int_hook(ipc_permission, 0, ipcp, flag);
1193 }
1194
1195 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1196 {
1197         *secid = 0;
1198         call_void_hook(ipc_getsecid, ipcp, secid);
1199 }
1200
1201 int security_msg_msg_alloc(struct msg_msg *msg)
1202 {
1203         return call_int_hook(msg_msg_alloc_security, 0, msg);
1204 }
1205
1206 void security_msg_msg_free(struct msg_msg *msg)
1207 {
1208         call_void_hook(msg_msg_free_security, msg);
1209 }
1210
1211 int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1212 {
1213         return call_int_hook(msg_queue_alloc_security, 0, msq);
1214 }
1215
1216 void security_msg_queue_free(struct kern_ipc_perm *msq)
1217 {
1218         call_void_hook(msg_queue_free_security, msq);
1219 }
1220
1221 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1222 {
1223         return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1224 }
1225
1226 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1227 {
1228         return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1229 }
1230
1231 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1232                                struct msg_msg *msg, int msqflg)
1233 {
1234         return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1235 }
1236
1237 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1238                                struct task_struct *target, long type, int mode)
1239 {
1240         return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1241 }
1242
1243 int security_shm_alloc(struct kern_ipc_perm *shp)
1244 {
1245         return call_int_hook(shm_alloc_security, 0, shp);
1246 }
1247
1248 void security_shm_free(struct kern_ipc_perm *shp)
1249 {
1250         call_void_hook(shm_free_security, shp);
1251 }
1252
1253 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
1254 {
1255         return call_int_hook(shm_associate, 0, shp, shmflg);
1256 }
1257
1258 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1259 {
1260         return call_int_hook(shm_shmctl, 0, shp, cmd);
1261 }
1262
1263 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
1264 {
1265         return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1266 }
1267
1268 int security_sem_alloc(struct kern_ipc_perm *sma)
1269 {
1270         return call_int_hook(sem_alloc_security, 0, sma);
1271 }
1272
1273 void security_sem_free(struct kern_ipc_perm *sma)
1274 {
1275         call_void_hook(sem_free_security, sma);
1276 }
1277
1278 int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1279 {
1280         return call_int_hook(sem_associate, 0, sma, semflg);
1281 }
1282
1283 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1284 {
1285         return call_int_hook(sem_semctl, 0, sma, cmd);
1286 }
1287
1288 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
1289                         unsigned nsops, int alter)
1290 {
1291         return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1292 }
1293
1294 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1295 {
1296         if (unlikely(inode && IS_PRIVATE(inode)))
1297                 return;
1298         call_void_hook(d_instantiate, dentry, inode);
1299 }
1300 EXPORT_SYMBOL(security_d_instantiate);
1301
1302 int security_getprocattr(struct task_struct *p, char *name, char **value)
1303 {
1304         return call_int_hook(getprocattr, -EINVAL, p, name, value);
1305 }
1306
1307 int security_setprocattr(const char *name, void *value, size_t size)
1308 {
1309         return call_int_hook(setprocattr, -EINVAL, name, value, size);
1310 }
1311
1312 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1313 {
1314         return call_int_hook(netlink_send, 0, sk, skb);
1315 }
1316
1317 int security_ismaclabel(const char *name)
1318 {
1319         return call_int_hook(ismaclabel, 0, name);
1320 }
1321 EXPORT_SYMBOL(security_ismaclabel);
1322
1323 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1324 {
1325         return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1326                                 seclen);
1327 }
1328 EXPORT_SYMBOL(security_secid_to_secctx);
1329
1330 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1331 {
1332         *secid = 0;
1333         return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1334 }
1335 EXPORT_SYMBOL(security_secctx_to_secid);
1336
1337 void security_release_secctx(char *secdata, u32 seclen)
1338 {
1339         call_void_hook(release_secctx, secdata, seclen);
1340 }
1341 EXPORT_SYMBOL(security_release_secctx);
1342
1343 void security_inode_invalidate_secctx(struct inode *inode)
1344 {
1345         call_void_hook(inode_invalidate_secctx, inode);
1346 }
1347 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1348
1349 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1350 {
1351         return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1352 }
1353 EXPORT_SYMBOL(security_inode_notifysecctx);
1354
1355 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1356 {
1357         return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1358 }
1359 EXPORT_SYMBOL(security_inode_setsecctx);
1360
1361 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1362 {
1363         return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1364 }
1365 EXPORT_SYMBOL(security_inode_getsecctx);
1366
1367 #ifdef CONFIG_SECURITY_NETWORK
1368
1369 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1370 {
1371         return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1372 }
1373 EXPORT_SYMBOL(security_unix_stream_connect);
1374
1375 int security_unix_may_send(struct socket *sock,  struct socket *other)
1376 {
1377         return call_int_hook(unix_may_send, 0, sock, other);
1378 }
1379 EXPORT_SYMBOL(security_unix_may_send);
1380
1381 int security_socket_create(int family, int type, int protocol, int kern)
1382 {
1383         return call_int_hook(socket_create, 0, family, type, protocol, kern);
1384 }
1385
1386 int security_socket_post_create(struct socket *sock, int family,
1387                                 int type, int protocol, int kern)
1388 {
1389         return call_int_hook(socket_post_create, 0, sock, family, type,
1390                                                 protocol, kern);
1391 }
1392
1393 int security_socket_socketpair(struct socket *socka, struct socket *sockb)
1394 {
1395         return call_int_hook(socket_socketpair, 0, socka, sockb);
1396 }
1397 EXPORT_SYMBOL(security_socket_socketpair);
1398
1399 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1400 {
1401         return call_int_hook(socket_bind, 0, sock, address, addrlen);
1402 }
1403
1404 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1405 {
1406         return call_int_hook(socket_connect, 0, sock, address, addrlen);
1407 }
1408
1409 int security_socket_listen(struct socket *sock, int backlog)
1410 {
1411         return call_int_hook(socket_listen, 0, sock, backlog);
1412 }
1413
1414 int security_socket_accept(struct socket *sock, struct socket *newsock)
1415 {
1416         return call_int_hook(socket_accept, 0, sock, newsock);
1417 }
1418
1419 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1420 {
1421         return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1422 }
1423
1424 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1425                             int size, int flags)
1426 {
1427         return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1428 }
1429
1430 int security_socket_getsockname(struct socket *sock)
1431 {
1432         return call_int_hook(socket_getsockname, 0, sock);
1433 }
1434
1435 int security_socket_getpeername(struct socket *sock)
1436 {
1437         return call_int_hook(socket_getpeername, 0, sock);
1438 }
1439
1440 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1441 {
1442         return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1443 }
1444
1445 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1446 {
1447         return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1448 }
1449
1450 int security_socket_shutdown(struct socket *sock, int how)
1451 {
1452         return call_int_hook(socket_shutdown, 0, sock, how);
1453 }
1454
1455 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1456 {
1457         return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1458 }
1459 EXPORT_SYMBOL(security_sock_rcv_skb);
1460
1461 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1462                                       int __user *optlen, unsigned len)
1463 {
1464         return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1465                                 optval, optlen, len);
1466 }
1467
1468 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1469 {
1470         return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1471                              skb, secid);
1472 }
1473 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1474
1475 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1476 {
1477         return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1478 }
1479
1480 void security_sk_free(struct sock *sk)
1481 {
1482         call_void_hook(sk_free_security, sk);
1483 }
1484
1485 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1486 {
1487         call_void_hook(sk_clone_security, sk, newsk);
1488 }
1489 EXPORT_SYMBOL(security_sk_clone);
1490
1491 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1492 {
1493         call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1494 }
1495 EXPORT_SYMBOL(security_sk_classify_flow);
1496
1497 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1498 {
1499         call_void_hook(req_classify_flow, req, fl);
1500 }
1501 EXPORT_SYMBOL(security_req_classify_flow);
1502
1503 void security_sock_graft(struct sock *sk, struct socket *parent)
1504 {
1505         call_void_hook(sock_graft, sk, parent);
1506 }
1507 EXPORT_SYMBOL(security_sock_graft);
1508
1509 int security_inet_conn_request(struct sock *sk,
1510                         struct sk_buff *skb, struct request_sock *req)
1511 {
1512         return call_int_hook(inet_conn_request, 0, sk, skb, req);
1513 }
1514 EXPORT_SYMBOL(security_inet_conn_request);
1515
1516 void security_inet_csk_clone(struct sock *newsk,
1517                         const struct request_sock *req)
1518 {
1519         call_void_hook(inet_csk_clone, newsk, req);
1520 }
1521
1522 void security_inet_conn_established(struct sock *sk,
1523                         struct sk_buff *skb)
1524 {
1525         call_void_hook(inet_conn_established, sk, skb);
1526 }
1527 EXPORT_SYMBOL(security_inet_conn_established);
1528
1529 int security_secmark_relabel_packet(u32 secid)
1530 {
1531         return call_int_hook(secmark_relabel_packet, 0, secid);
1532 }
1533 EXPORT_SYMBOL(security_secmark_relabel_packet);
1534
1535 void security_secmark_refcount_inc(void)
1536 {
1537         call_void_hook(secmark_refcount_inc);
1538 }
1539 EXPORT_SYMBOL(security_secmark_refcount_inc);
1540
1541 void security_secmark_refcount_dec(void)
1542 {
1543         call_void_hook(secmark_refcount_dec);
1544 }
1545 EXPORT_SYMBOL(security_secmark_refcount_dec);
1546
1547 int security_tun_dev_alloc_security(void **security)
1548 {
1549         return call_int_hook(tun_dev_alloc_security, 0, security);
1550 }
1551 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1552
1553 void security_tun_dev_free_security(void *security)
1554 {
1555         call_void_hook(tun_dev_free_security, security);
1556 }
1557 EXPORT_SYMBOL(security_tun_dev_free_security);
1558
1559 int security_tun_dev_create(void)
1560 {
1561         return call_int_hook(tun_dev_create, 0);
1562 }
1563 EXPORT_SYMBOL(security_tun_dev_create);
1564
1565 int security_tun_dev_attach_queue(void *security)
1566 {
1567         return call_int_hook(tun_dev_attach_queue, 0, security);
1568 }
1569 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1570
1571 int security_tun_dev_attach(struct sock *sk, void *security)
1572 {
1573         return call_int_hook(tun_dev_attach, 0, sk, security);
1574 }
1575 EXPORT_SYMBOL(security_tun_dev_attach);
1576
1577 int security_tun_dev_open(void *security)
1578 {
1579         return call_int_hook(tun_dev_open, 0, security);
1580 }
1581 EXPORT_SYMBOL(security_tun_dev_open);
1582
1583 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb)
1584 {
1585         return call_int_hook(sctp_assoc_request, 0, ep, skb);
1586 }
1587 EXPORT_SYMBOL(security_sctp_assoc_request);
1588
1589 int security_sctp_bind_connect(struct sock *sk, int optname,
1590                                struct sockaddr *address, int addrlen)
1591 {
1592         return call_int_hook(sctp_bind_connect, 0, sk, optname,
1593                              address, addrlen);
1594 }
1595 EXPORT_SYMBOL(security_sctp_bind_connect);
1596
1597 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1598                             struct sock *newsk)
1599 {
1600         call_void_hook(sctp_sk_clone, ep, sk, newsk);
1601 }
1602 EXPORT_SYMBOL(security_sctp_sk_clone);
1603
1604 #endif  /* CONFIG_SECURITY_NETWORK */
1605
1606 #ifdef CONFIG_SECURITY_INFINIBAND
1607
1608 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1609 {
1610         return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
1611 }
1612 EXPORT_SYMBOL(security_ib_pkey_access);
1613
1614 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1615 {
1616         return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
1617 }
1618 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
1619
1620 int security_ib_alloc_security(void **sec)
1621 {
1622         return call_int_hook(ib_alloc_security, 0, sec);
1623 }
1624 EXPORT_SYMBOL(security_ib_alloc_security);
1625
1626 void security_ib_free_security(void *sec)
1627 {
1628         call_void_hook(ib_free_security, sec);
1629 }
1630 EXPORT_SYMBOL(security_ib_free_security);
1631 #endif  /* CONFIG_SECURITY_INFINIBAND */
1632
1633 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1634
1635 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1636                                struct xfrm_user_sec_ctx *sec_ctx,
1637                                gfp_t gfp)
1638 {
1639         return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1640 }
1641 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1642
1643 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1644                               struct xfrm_sec_ctx **new_ctxp)
1645 {
1646         return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1647 }
1648
1649 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1650 {
1651         call_void_hook(xfrm_policy_free_security, ctx);
1652 }
1653 EXPORT_SYMBOL(security_xfrm_policy_free);
1654
1655 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1656 {
1657         return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1658 }
1659
1660 int security_xfrm_state_alloc(struct xfrm_state *x,
1661                               struct xfrm_user_sec_ctx *sec_ctx)
1662 {
1663         return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1664 }
1665 EXPORT_SYMBOL(security_xfrm_state_alloc);
1666
1667 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1668                                       struct xfrm_sec_ctx *polsec, u32 secid)
1669 {
1670         return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1671 }
1672
1673 int security_xfrm_state_delete(struct xfrm_state *x)
1674 {
1675         return call_int_hook(xfrm_state_delete_security, 0, x);
1676 }
1677 EXPORT_SYMBOL(security_xfrm_state_delete);
1678
1679 void security_xfrm_state_free(struct xfrm_state *x)
1680 {
1681         call_void_hook(xfrm_state_free_security, x);
1682 }
1683
1684 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1685 {
1686         return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1687 }
1688
1689 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1690                                        struct xfrm_policy *xp,
1691                                        const struct flowi *fl)
1692 {
1693         struct security_hook_list *hp;
1694         int rc = 1;
1695
1696         /*
1697          * Since this function is expected to return 0 or 1, the judgment
1698          * becomes difficult if multiple LSMs supply this call. Fortunately,
1699          * we can use the first LSM's judgment because currently only SELinux
1700          * supplies this call.
1701          *
1702          * For speed optimization, we explicitly break the loop rather than
1703          * using the macro
1704          */
1705         hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1706                                 list) {
1707                 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1708                 break;
1709         }
1710         return rc;
1711 }
1712
1713 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1714 {
1715         return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1716 }
1717
1718 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1719 {
1720         int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1721                                 0);
1722
1723         BUG_ON(rc);
1724 }
1725 EXPORT_SYMBOL(security_skb_classify_flow);
1726
1727 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1728
1729 #ifdef CONFIG_KEYS
1730
1731 int security_key_alloc(struct key *key, const struct cred *cred,
1732                        unsigned long flags)
1733 {
1734         return call_int_hook(key_alloc, 0, key, cred, flags);
1735 }
1736
1737 void security_key_free(struct key *key)
1738 {
1739         call_void_hook(key_free, key);
1740 }
1741
1742 int security_key_permission(key_ref_t key_ref,
1743                             const struct cred *cred, unsigned perm)
1744 {
1745         return call_int_hook(key_permission, 0, key_ref, cred, perm);
1746 }
1747
1748 int security_key_getsecurity(struct key *key, char **_buffer)
1749 {
1750         *_buffer = NULL;
1751         return call_int_hook(key_getsecurity, 0, key, _buffer);
1752 }
1753
1754 #endif  /* CONFIG_KEYS */
1755
1756 #ifdef CONFIG_AUDIT
1757
1758 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1759 {
1760         return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1761 }
1762
1763 int security_audit_rule_known(struct audit_krule *krule)
1764 {
1765         return call_int_hook(audit_rule_known, 0, krule);
1766 }
1767
1768 void security_audit_rule_free(void *lsmrule)
1769 {
1770         call_void_hook(audit_rule_free, lsmrule);
1771 }
1772
1773 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1774                               struct audit_context *actx)
1775 {
1776         return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1777                                 actx);
1778 }
1779 #endif /* CONFIG_AUDIT */
1780
1781 #ifdef CONFIG_BPF_SYSCALL
1782 int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
1783 {
1784         return call_int_hook(bpf, 0, cmd, attr, size);
1785 }
1786 int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1787 {
1788         return call_int_hook(bpf_map, 0, map, fmode);
1789 }
1790 int security_bpf_prog(struct bpf_prog *prog)
1791 {
1792         return call_int_hook(bpf_prog, 0, prog);
1793 }
1794 int security_bpf_map_alloc(struct bpf_map *map)
1795 {
1796         return call_int_hook(bpf_map_alloc_security, 0, map);
1797 }
1798 int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1799 {
1800         return call_int_hook(bpf_prog_alloc_security, 0, aux);
1801 }
1802 void security_bpf_map_free(struct bpf_map *map)
1803 {
1804         call_void_hook(bpf_map_free_security, map);
1805 }
1806 void security_bpf_prog_free(struct bpf_prog_aux *aux)
1807 {
1808         call_void_hook(bpf_prog_free_security, aux);
1809 }
1810 #endif /* CONFIG_BPF_SYSCALL */