security/security.c

   1 /*
   2  * Security plug functions
   3  *
   4  * Copyright (C) 2001 WireX Communications, Inc <chris@wirex.com>
   5  * Copyright (C) 2001-2002 Greg Kroah-Hartman <greg@kroah.com>
   6  * Copyright (C) 2001 Networks Associates Technology, Inc <ssmalley@nai.com>
   7  * Copyright (C) 2016 Mellanox Technologies
   8  *
   9  *      This program is free software; you can redistribute it and/or modify
  10  *      it under the terms of the GNU General Public License as published by
  11  *      the Free Software Foundation; either version 2 of the License, or
  12  *      (at your option) any later version.
  13  */
  14
  15 #include <linux/bpf.h>
  16 #include <linux/capability.h>
  17 #include <linux/dcache.h>
  18 #include <linux/module.h>
  19 #include <linux/init.h>
  20 #include <linux/kernel.h>
  21 #include <linux/lsm_hooks.h>
  22 #include <linux/integrity.h>
  23 #include <linux/ima.h>
  24 #include <linux/evm.h>
  25 #include <linux/fsnotify.h>
  26 #include <linux/mman.h>
  27 #include <linux/mount.h>
  28 #include <linux/personality.h>
  29 #include <linux/backing-dev.h>
  30 #include <linux/string.h>
  31 #include <net/flow.h>
  32
  33 #include <trace/events/initcall.h>
  34
  35 #define MAX_LSM_EVM_XATTR       2
  36
  37 /* Maximum number of letters for an LSM name string */
  38 #define SECURITY_NAME_MAX       10
  39
  40 struct security_hook_heads security_hook_heads __lsm_ro_after_init;
  41 static ATOMIC_NOTIFIER_HEAD(lsm_notifier_chain);
  42
  43 char *lsm_names;
  44 /* Boot-time LSM user choice */
  45 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] =
  46         CONFIG_DEFAULT_SECURITY;
  47
  48 static void __init do_security_initcalls(void)
  49 {
  50         int ret;
  51         initcall_t *call;
  52         call = __security_initcall_start;
  53         trace_initcall_level("security");
  54         while (call < __security_initcall_end) {
  55                 trace_initcall_start((*call));
  56                 ret = (*call) ();
  57                 trace_initcall_finish((*call), ret);
  58                 call++;
  59         }
  60 }
  61
  62 /**
  63  * security_init - initializes the security framework
  64  *
  65  * This should be called early in the kernel initialization sequence.
  66  */
  67 int __init security_init(void)
  68 {
  69         int i;
  70         struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
  71
  72         for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
  73              i++)
  74                 INIT_HLIST_HEAD(&list[i]);
  75         pr_info("Security Framework initialized\n");
  76
  77         /*
  78          * Load minor LSMs, with the capability module always first.
  79          */
  80         capability_add_hooks();
  81         yama_add_hooks();
  82         loadpin_add_hooks();
  83
  84         /*
  85          * Load all the remaining security modules.
  86          */
  87         do_security_initcalls();
  88
  89         return 0;
  90 }
  91
  92 /* Save user chosen LSM */
  93 static int __init choose_lsm(char *str)
  94 {
  95         strncpy(chosen_lsm, str, SECURITY_NAME_MAX);
  96         return 1;
  97 }
  98 __setup("security=", choose_lsm);
  99
 100 static bool match_last_lsm(const char *list, const char *lsm)
 101 {
 102         const char *last;
 103
 104         if (WARN_ON(!list || !lsm))
 105                 return false;
 106         last = strrchr(list, ',');
 107         if (last)
 108                 /* Pass the comma, strcmp() will check for '\0' */
 109                 last++;
 110         else
 111                 last = list;
 112         return !strcmp(last, lsm);
 113 }
 114
 115 static int lsm_append(char *new, char **result)
 116 {
 117         char *cp;
 118
 119         if (*result == NULL) {
 120                 *result = kstrdup(new, GFP_KERNEL);
 121                 if (*result == NULL)
 122                         return -ENOMEM;
 123         } else {
 124                 /* Check if it is the last registered name */
 125                 if (match_last_lsm(*result, new))
 126                         return 0;
 127                 cp = kasprintf(GFP_KERNEL, "%s,%s", *result, new);
 128                 if (cp == NULL)
 129                         return -ENOMEM;
 130                 kfree(*result);
 131                 *result = cp;
 132         }
 133         return 0;
 134 }
 135
 136 /**
 137  * security_module_enable - Load given security module on boot ?
 138  * @module: the name of the module
 139  *
 140  * Each LSM must pass this method before registering its own operations
 141  * to avoid security registration races. This method may also be used
 142  * to check if your LSM is currently loaded during kernel initialization.
 143  *
 144  * Returns:
 145  *
 146  * true if:
 147  *
 148  * - The passed LSM is the one chosen by user at boot time,
 149  * - or the passed LSM is configured as the default and the user did not
 150  *   choose an alternate LSM at boot time.
 151  *
 152  * Otherwise, return false.
 153  */
 154 int __init security_module_enable(const char *module)
 155 {
 156         return !strcmp(module, chosen_lsm);
 157 }
 158
 159 /**
 160  * security_add_hooks - Add a modules hooks to the hook lists.
 161  * @hooks: the hooks to add
 162  * @count: the number of hooks to add
 163  * @lsm: the name of the security module
 164  *
 165  * Each LSM has to register its hooks with the infrastructure.
 166  */
 167 void __init security_add_hooks(struct security_hook_list *hooks, int count,
 168                                 char *lsm)
 169 {
 170         int i;
 171
 172         for (i = 0; i < count; i++) {
 173                 hooks[i].lsm = lsm;
 174                 hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
 175         }
 176         if (lsm_append(lsm, &lsm_names) < 0)
 177                 panic("%s - Cannot get early memory.\n", __func__);
 178 }
 179
 180 int call_lsm_notifier(enum lsm_event event, void *data)
 181 {
 182         return atomic_notifier_call_chain(&lsm_notifier_chain, event, data);
 183 }
 184 EXPORT_SYMBOL(call_lsm_notifier);
 185
 186 int register_lsm_notifier(struct notifier_block *nb)
 187 {
 188         return atomic_notifier_chain_register(&lsm_notifier_chain, nb);
 189 }
 190 EXPORT_SYMBOL(register_lsm_notifier);
 191
 192 int unregister_lsm_notifier(struct notifier_block *nb)
 193 {
 194         return atomic_notifier_chain_unregister(&lsm_notifier_chain, nb);
 195 }
 196 EXPORT_SYMBOL(unregister_lsm_notifier);
 197
 198 /*
 199  * Hook list operation macros.
 200  *
 201  * call_void_hook:
 202  *      This is a hook that does not return a value.
 203  *
 204  * call_int_hook:
 205  *      This is a hook that returns a value.
 206  */
 207
 208 #define call_void_hook(FUNC, ...)                               \
 209         do {                                                    \
 210                 struct security_hook_list *P;                   \
 211                                                                 \
 212                 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
 213                         P->hook.FUNC(__VA_ARGS__);              \
 214         } while (0)
 215
 216 #define call_int_hook(FUNC, IRC, ...) ({                        \
 217         int RC = IRC;                                           \
 218         do {                                                    \
 219                 struct security_hook_list *P;                   \
 220                                                                 \
 221                 hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
 222                         RC = P->hook.FUNC(__VA_ARGS__);         \
 223                         if (RC != 0)                            \
 224                                 break;                          \
 225                 }                                               \
 226         } while (0);                                            \
 227         RC;                                                     \
 228 })
 229
 230 /* Security operations */
 231
 232 int security_binder_set_context_mgr(struct task_struct *mgr)
 233 {
 234         return call_int_hook(binder_set_context_mgr, 0, mgr);
 235 }
 236
 237 int security_binder_transaction(struct task_struct *from,
 238                                 struct task_struct *to)
 239 {
 240         return call_int_hook(binder_transaction, 0, from, to);
 241 }
 242
 243 int security_binder_transfer_binder(struct task_struct *from,
 244                                     struct task_struct *to)
 245 {
 246         return call_int_hook(binder_transfer_binder, 0, from, to);
 247 }
 248
 249 int security_binder_transfer_file(struct task_struct *from,
 250                                   struct task_struct *to, struct file *file)
 251 {
 252         return call_int_hook(binder_transfer_file, 0, from, to, file);
 253 }
 254
 255 int security_ptrace_access_check(struct task_struct *child, unsigned int mode)
 256 {
 257         return call_int_hook(ptrace_access_check, 0, child, mode);
 258 }
 259
 260 int security_ptrace_traceme(struct task_struct *parent)
 261 {
 262         return call_int_hook(ptrace_traceme, 0, parent);
 263 }
 264
 265 int security_capget(struct task_struct *target,
 266                      kernel_cap_t *effective,
 267                      kernel_cap_t *inheritable,
 268                      kernel_cap_t *permitted)
 269 {
 270         return call_int_hook(capget, 0, target,
 271                                 effective, inheritable, permitted);
 272 }
 273
 274 int security_capset(struct cred *new, const struct cred *old,
 275                     const kernel_cap_t *effective,
 276                     const kernel_cap_t *inheritable,
 277                     const kernel_cap_t *permitted)
 278 {
 279         return call_int_hook(capset, 0, new, old,
 280                                 effective, inheritable, permitted);
 281 }
 282
 283 int security_capable(const struct cred *cred, struct user_namespace *ns,
 284                      int cap)
 285 {
 286         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT);
 287 }
 288
 289 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns,
 290                              int cap)
 291 {
 292         return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT);
 293 }
 294
 295 int security_quotactl(int cmds, int type, int id, struct super_block *sb)
 296 {
 297         return call_int_hook(quotactl, 0, cmds, type, id, sb);
 298 }
 299
 300 int security_quota_on(struct dentry *dentry)
 301 {
 302         return call_int_hook(quota_on, 0, dentry);
 303 }
 304
 305 int security_syslog(int type)
 306 {
 307         return call_int_hook(syslog, 0, type);
 308 }
 309
 310 int security_settime64(const struct timespec64 *ts, const struct timezone *tz)
 311 {
 312         return call_int_hook(settime, 0, ts, tz);
 313 }
 314
 315 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
 316 {
 317         struct security_hook_list *hp;
 318         int cap_sys_admin = 1;
 319         int rc;
 320
 321         /*
 322          * The module will respond with a positive value if
 323          * it thinks the __vm_enough_memory() call should be
 324          * made with the cap_sys_admin set. If all of the modules
 325          * agree that it should be set it will. If any module
 326          * thinks it should not be set it won't.
 327          */
 328         hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
 329                 rc = hp->hook.vm_enough_memory(mm, pages);
 330                 if (rc <= 0) {
 331                         cap_sys_admin = 0;
 332                         break;
 333                 }
 334         }
 335         return __vm_enough_memory(mm, pages, cap_sys_admin);
 336 }
 337
 338 int security_bprm_set_creds(struct linux_binprm *bprm)
 339 {
 340         return call_int_hook(bprm_set_creds, 0, bprm);
 341 }
 342
 343 int security_bprm_check(struct linux_binprm *bprm)
 344 {
 345         int ret;
 346
 347         ret = call_int_hook(bprm_check_security, 0, bprm);
 348         if (ret)
 349                 return ret;
 350         return ima_bprm_check(bprm);
 351 }
 352
 353 void security_bprm_committing_creds(struct linux_binprm *bprm)
 354 {
 355         call_void_hook(bprm_committing_creds, bprm);
 356 }
 357
 358 void security_bprm_committed_creds(struct linux_binprm *bprm)
 359 {
 360         call_void_hook(bprm_committed_creds, bprm);
 361 }
 362
 363 int security_sb_alloc(struct super_block *sb)
 364 {
 365         return call_int_hook(sb_alloc_security, 0, sb);
 366 }
 367
 368 void security_sb_free(struct super_block *sb)
 369 {
 370         call_void_hook(sb_free_security, sb);
 371 }
 372
 373 int security_sb_copy_data(char *orig, char *copy)
 374 {
 375         return call_int_hook(sb_copy_data, 0, orig, copy);
 376 }
 377 EXPORT_SYMBOL(security_sb_copy_data);
 378
 379 int security_sb_remount(struct super_block *sb, void *data)
 380 {
 381         return call_int_hook(sb_remount, 0, sb, data);
 382 }
 383
 384 int security_sb_kern_mount(struct super_block *sb, int flags, void *data)
 385 {
 386         return call_int_hook(sb_kern_mount, 0, sb, flags, data);
 387 }
 388
 389 int security_sb_show_options(struct seq_file *m, struct super_block *sb)
 390 {
 391         return call_int_hook(sb_show_options, 0, m, sb);
 392 }
 393
 394 int security_sb_statfs(struct dentry *dentry)
 395 {
 396         return call_int_hook(sb_statfs, 0, dentry);
 397 }
 398
 399 int security_sb_mount(const char *dev_name, const struct path *path,
 400                        const char *type, unsigned long flags, void *data)
 401 {
 402         return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data);
 403 }
 404
 405 int security_sb_umount(struct vfsmount *mnt, int flags)
 406 {
 407         return call_int_hook(sb_umount, 0, mnt, flags);
 408 }
 409
 410 int security_sb_pivotroot(const struct path *old_path, const struct path *new_path)
 411 {
 412         return call_int_hook(sb_pivotroot, 0, old_path, new_path);
 413 }
 414
 415 int security_sb_set_mnt_opts(struct super_block *sb,
 416                                 struct security_mnt_opts *opts,
 417                                 unsigned long kern_flags,
 418                                 unsigned long *set_kern_flags)
 419 {
 420         return call_int_hook(sb_set_mnt_opts,
 421                                 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb,
 422                                 opts, kern_flags, set_kern_flags);
 423 }
 424 EXPORT_SYMBOL(security_sb_set_mnt_opts);
 425
 426 int security_sb_clone_mnt_opts(const struct super_block *oldsb,
 427                                 struct super_block *newsb,
 428                                 unsigned long kern_flags,
 429                                 unsigned long *set_kern_flags)
 430 {
 431         return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb,
 432                                 kern_flags, set_kern_flags);
 433 }
 434 EXPORT_SYMBOL(security_sb_clone_mnt_opts);
 435
 436 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts)
 437 {
 438         return call_int_hook(sb_parse_opts_str, 0, options, opts);
 439 }
 440 EXPORT_SYMBOL(security_sb_parse_opts_str);
 441
 442 int security_inode_alloc(struct inode *inode)
 443 {
 444         inode->i_security = NULL;
 445         return call_int_hook(inode_alloc_security, 0, inode);
 446 }
 447
 448 void security_inode_free(struct inode *inode)
 449 {
 450         integrity_inode_free(inode);
 451         call_void_hook(inode_free_security, inode);
 452 }
 453
 454 int security_dentry_init_security(struct dentry *dentry, int mode,
 455                                         const struct qstr *name, void **ctx,
 456                                         u32 *ctxlen)
 457 {
 458         return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode,
 459                                 name, ctx, ctxlen);
 460 }
 461 EXPORT_SYMBOL(security_dentry_init_security);
 462
 463 int security_dentry_create_files_as(struct dentry *dentry, int mode,
 464                                     struct qstr *name,
 465                                     const struct cred *old, struct cred *new)
 466 {
 467         return call_int_hook(dentry_create_files_as, 0, dentry, mode,
 468                                 name, old, new);
 469 }
 470 EXPORT_SYMBOL(security_dentry_create_files_as);
 471
 472 int security_inode_init_security(struct inode *inode, struct inode *dir,
 473                                  const struct qstr *qstr,
 474                                  const initxattrs initxattrs, void *fs_data)
 475 {
 476         struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1];
 477         struct xattr *lsm_xattr, *evm_xattr, *xattr;
 478         int ret;
 479
 480         if (unlikely(IS_PRIVATE(inode)))
 481                 return 0;
 482
 483         if (!initxattrs)
 484                 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode,
 485                                      dir, qstr, NULL, NULL, NULL);
 486         memset(new_xattrs, 0, sizeof(new_xattrs));
 487         lsm_xattr = new_xattrs;
 488         ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr,
 489                                                 &lsm_xattr->name,
 490                                                 &lsm_xattr->value,
 491                                                 &lsm_xattr->value_len);
 492         if (ret)
 493                 goto out;
 494
 495         evm_xattr = lsm_xattr + 1;
 496         ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr);
 497         if (ret)
 498                 goto out;
 499         ret = initxattrs(inode, new_xattrs, fs_data);
 500 out:
 501         for (xattr = new_xattrs; xattr->value != NULL; xattr++)
 502                 kfree(xattr->value);
 503         return (ret == -EOPNOTSUPP) ? 0 : ret;
 504 }
 505 EXPORT_SYMBOL(security_inode_init_security);
 506
 507 int security_old_inode_init_security(struct inode *inode, struct inode *dir,
 508                                      const struct qstr *qstr, const char **name,
 509                                      void **value, size_t *len)
 510 {
 511         if (unlikely(IS_PRIVATE(inode)))
 512                 return -EOPNOTSUPP;
 513         return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir,
 514                              qstr, name, value, len);
 515 }
 516 EXPORT_SYMBOL(security_old_inode_init_security);
 517
 518 #ifdef CONFIG_SECURITY_PATH
 519 int security_path_mknod(const struct path *dir, struct dentry *dentry, umode_t mode,
 520                         unsigned int dev)
 521 {
 522         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 523                 return 0;
 524         return call_int_hook(path_mknod, 0, dir, dentry, mode, dev);
 525 }
 526 EXPORT_SYMBOL(security_path_mknod);
 527
 528 int security_path_mkdir(const struct path *dir, struct dentry *dentry, umode_t mode)
 529 {
 530         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 531                 return 0;
 532         return call_int_hook(path_mkdir, 0, dir, dentry, mode);
 533 }
 534 EXPORT_SYMBOL(security_path_mkdir);
 535
 536 int security_path_rmdir(const struct path *dir, struct dentry *dentry)
 537 {
 538         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 539                 return 0;
 540         return call_int_hook(path_rmdir, 0, dir, dentry);
 541 }
 542
 543 int security_path_unlink(const struct path *dir, struct dentry *dentry)
 544 {
 545         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 546                 return 0;
 547         return call_int_hook(path_unlink, 0, dir, dentry);
 548 }
 549 EXPORT_SYMBOL(security_path_unlink);
 550
 551 int security_path_symlink(const struct path *dir, struct dentry *dentry,
 552                           const char *old_name)
 553 {
 554         if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry))))
 555                 return 0;
 556         return call_int_hook(path_symlink, 0, dir, dentry, old_name);
 557 }
 558
 559 int security_path_link(struct dentry *old_dentry, const struct path *new_dir,
 560                        struct dentry *new_dentry)
 561 {
 562         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 563                 return 0;
 564         return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry);
 565 }
 566
 567 int security_path_rename(const struct path *old_dir, struct dentry *old_dentry,
 568                          const struct path *new_dir, struct dentry *new_dentry,
 569                          unsigned int flags)
 570 {
 571         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 572                      (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 573                 return 0;
 574
 575         if (flags & RENAME_EXCHANGE) {
 576                 int err = call_int_hook(path_rename, 0, new_dir, new_dentry,
 577                                         old_dir, old_dentry);
 578                 if (err)
 579                         return err;
 580         }
 581
 582         return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir,
 583                                 new_dentry);
 584 }
 585 EXPORT_SYMBOL(security_path_rename);
 586
 587 int security_path_truncate(const struct path *path)
 588 {
 589         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 590                 return 0;
 591         return call_int_hook(path_truncate, 0, path);
 592 }
 593
 594 int security_path_chmod(const struct path *path, umode_t mode)
 595 {
 596         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 597                 return 0;
 598         return call_int_hook(path_chmod, 0, path, mode);
 599 }
 600
 601 int security_path_chown(const struct path *path, kuid_t uid, kgid_t gid)
 602 {
 603         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 604                 return 0;
 605         return call_int_hook(path_chown, 0, path, uid, gid);
 606 }
 607
 608 int security_path_chroot(const struct path *path)
 609 {
 610         return call_int_hook(path_chroot, 0, path);
 611 }
 612 #endif
 613
 614 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode)
 615 {
 616         if (unlikely(IS_PRIVATE(dir)))
 617                 return 0;
 618         return call_int_hook(inode_create, 0, dir, dentry, mode);
 619 }
 620 EXPORT_SYMBOL_GPL(security_inode_create);
 621
 622 int security_inode_link(struct dentry *old_dentry, struct inode *dir,
 623                          struct dentry *new_dentry)
 624 {
 625         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry))))
 626                 return 0;
 627         return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry);
 628 }
 629
 630 int security_inode_unlink(struct inode *dir, struct dentry *dentry)
 631 {
 632         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 633                 return 0;
 634         return call_int_hook(inode_unlink, 0, dir, dentry);
 635 }
 636
 637 int security_inode_symlink(struct inode *dir, struct dentry *dentry,
 638                             const char *old_name)
 639 {
 640         if (unlikely(IS_PRIVATE(dir)))
 641                 return 0;
 642         return call_int_hook(inode_symlink, 0, dir, dentry, old_name);
 643 }
 644
 645 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
 646 {
 647         if (unlikely(IS_PRIVATE(dir)))
 648                 return 0;
 649         return call_int_hook(inode_mkdir, 0, dir, dentry, mode);
 650 }
 651 EXPORT_SYMBOL_GPL(security_inode_mkdir);
 652
 653 int security_inode_rmdir(struct inode *dir, struct dentry *dentry)
 654 {
 655         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 656                 return 0;
 657         return call_int_hook(inode_rmdir, 0, dir, dentry);
 658 }
 659
 660 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev)
 661 {
 662         if (unlikely(IS_PRIVATE(dir)))
 663                 return 0;
 664         return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev);
 665 }
 666
 667 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry,
 668                            struct inode *new_dir, struct dentry *new_dentry,
 669                            unsigned int flags)
 670 {
 671         if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) ||
 672             (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry)))))
 673                 return 0;
 674
 675         if (flags & RENAME_EXCHANGE) {
 676                 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry,
 677                                                      old_dir, old_dentry);
 678                 if (err)
 679                         return err;
 680         }
 681
 682         return call_int_hook(inode_rename, 0, old_dir, old_dentry,
 683                                            new_dir, new_dentry);
 684 }
 685
 686 int security_inode_readlink(struct dentry *dentry)
 687 {
 688         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 689                 return 0;
 690         return call_int_hook(inode_readlink, 0, dentry);
 691 }
 692
 693 int security_inode_follow_link(struct dentry *dentry, struct inode *inode,
 694                                bool rcu)
 695 {
 696         if (unlikely(IS_PRIVATE(inode)))
 697                 return 0;
 698         return call_int_hook(inode_follow_link, 0, dentry, inode, rcu);
 699 }
 700
 701 int security_inode_permission(struct inode *inode, int mask)
 702 {
 703         if (unlikely(IS_PRIVATE(inode)))
 704                 return 0;
 705         return call_int_hook(inode_permission, 0, inode, mask);
 706 }
 707
 708 int security_inode_setattr(struct dentry *dentry, struct iattr *attr)
 709 {
 710         int ret;
 711
 712         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 713                 return 0;
 714         ret = call_int_hook(inode_setattr, 0, dentry, attr);
 715         if (ret)
 716                 return ret;
 717         return evm_inode_setattr(dentry, attr);
 718 }
 719 EXPORT_SYMBOL_GPL(security_inode_setattr);
 720
 721 int security_inode_getattr(const struct path *path)
 722 {
 723         if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry))))
 724                 return 0;
 725         return call_int_hook(inode_getattr, 0, path);
 726 }
 727
 728 int security_inode_setxattr(struct dentry *dentry, const char *name,
 729                             const void *value, size_t size, int flags)
 730 {
 731         int ret;
 732
 733         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 734                 return 0;
 735         /*
 736          * SELinux and Smack integrate the cap call,
 737          * so assume that all LSMs supplying this call do so.
 738          */
 739         ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size,
 740                                 flags);
 741
 742         if (ret == 1)
 743                 ret = cap_inode_setxattr(dentry, name, value, size, flags);
 744         if (ret)
 745                 return ret;
 746         ret = ima_inode_setxattr(dentry, name, value, size);
 747         if (ret)
 748                 return ret;
 749         return evm_inode_setxattr(dentry, name, value, size);
 750 }
 751
 752 void security_inode_post_setxattr(struct dentry *dentry, const char *name,
 753                                   const void *value, size_t size, int flags)
 754 {
 755         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 756                 return;
 757         call_void_hook(inode_post_setxattr, dentry, name, value, size, flags);
 758         evm_inode_post_setxattr(dentry, name, value, size);
 759 }
 760
 761 int security_inode_getxattr(struct dentry *dentry, const char *name)
 762 {
 763         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 764                 return 0;
 765         return call_int_hook(inode_getxattr, 0, dentry, name);
 766 }
 767
 768 int security_inode_listxattr(struct dentry *dentry)
 769 {
 770         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 771                 return 0;
 772         return call_int_hook(inode_listxattr, 0, dentry);
 773 }
 774
 775 int security_inode_removexattr(struct dentry *dentry, const char *name)
 776 {
 777         int ret;
 778
 779         if (unlikely(IS_PRIVATE(d_backing_inode(dentry))))
 780                 return 0;
 781         /*
 782          * SELinux and Smack integrate the cap call,
 783          * so assume that all LSMs supplying this call do so.
 784          */
 785         ret = call_int_hook(inode_removexattr, 1, dentry, name);
 786         if (ret == 1)
 787                 ret = cap_inode_removexattr(dentry, name);
 788         if (ret)
 789                 return ret;
 790         ret = ima_inode_removexattr(dentry, name);
 791         if (ret)
 792                 return ret;
 793         return evm_inode_removexattr(dentry, name);
 794 }
 795
 796 int security_inode_need_killpriv(struct dentry *dentry)
 797 {
 798         return call_int_hook(inode_need_killpriv, 0, dentry);
 799 }
 800
 801 int security_inode_killpriv(struct dentry *dentry)
 802 {
 803         return call_int_hook(inode_killpriv, 0, dentry);
 804 }
 805
 806 int security_inode_getsecurity(struct inode *inode, const char *name, void **buffer, bool alloc)
 807 {
 808         struct security_hook_list *hp;
 809         int rc;
 810
 811         if (unlikely(IS_PRIVATE(inode)))
 812                 return -EOPNOTSUPP;
 813         /*
 814          * Only one module will provide an attribute with a given name.
 815          */
 816         hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
 817                 rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
 818                 if (rc != -EOPNOTSUPP)
 819                         return rc;
 820         }
 821         return -EOPNOTSUPP;
 822 }
 823
 824 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags)
 825 {
 826         struct security_hook_list *hp;
 827         int rc;
 828
 829         if (unlikely(IS_PRIVATE(inode)))
 830                 return -EOPNOTSUPP;
 831         /*
 832          * Only one module will provide an attribute with a given name.
 833          */
 834         hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
 835                 rc = hp->hook.inode_setsecurity(inode, name, value, size,
 836                                                                 flags);
 837                 if (rc != -EOPNOTSUPP)
 838                         return rc;
 839         }
 840         return -EOPNOTSUPP;
 841 }
 842
 843 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size)
 844 {
 845         if (unlikely(IS_PRIVATE(inode)))
 846                 return 0;
 847         return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size);
 848 }
 849 EXPORT_SYMBOL(security_inode_listsecurity);
 850
 851 void security_inode_getsecid(struct inode *inode, u32 *secid)
 852 {
 853         call_void_hook(inode_getsecid, inode, secid);
 854 }
 855
 856 int security_inode_copy_up(struct dentry *src, struct cred **new)
 857 {
 858         return call_int_hook(inode_copy_up, 0, src, new);
 859 }
 860 EXPORT_SYMBOL(security_inode_copy_up);
 861
 862 int security_inode_copy_up_xattr(const char *name)
 863 {
 864         return call_int_hook(inode_copy_up_xattr, -EOPNOTSUPP, name);
 865 }
 866 EXPORT_SYMBOL(security_inode_copy_up_xattr);
 867
 868 int security_file_permission(struct file *file, int mask)
 869 {
 870         int ret;
 871
 872         ret = call_int_hook(file_permission, 0, file, mask);
 873         if (ret)
 874                 return ret;
 875
 876         return fsnotify_perm(file, mask);
 877 }
 878
 879 int security_file_alloc(struct file *file)
 880 {
 881         return call_int_hook(file_alloc_security, 0, file);
 882 }
 883
 884 void security_file_free(struct file *file)
 885 {
 886         call_void_hook(file_free_security, file);
 887 }
 888
 889 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 890 {
 891         return call_int_hook(file_ioctl, 0, file, cmd, arg);
 892 }
 893
 894 static inline unsigned long mmap_prot(struct file *file, unsigned long prot)
 895 {
 896         /*
 897          * Does we have PROT_READ and does the application expect
 898          * it to imply PROT_EXEC?  If not, nothing to talk about...
 899          */
 900         if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ)
 901                 return prot;
 902         if (!(current->personality & READ_IMPLIES_EXEC))
 903                 return prot;
 904         /*
 905          * if that's an anonymous mapping, let it.
 906          */
 907         if (!file)
 908                 return prot | PROT_EXEC;
 909         /*
 910          * ditto if it's not on noexec mount, except that on !MMU we need
 911          * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case
 912          */
 913         if (!path_noexec(&file->f_path)) {
 914 #ifndef CONFIG_MMU
 915                 if (file->f_op->mmap_capabilities) {
 916                         unsigned caps = file->f_op->mmap_capabilities(file);
 917                         if (!(caps & NOMMU_MAP_EXEC))
 918                                 return prot;
 919                 }
 920 #endif
 921                 return prot | PROT_EXEC;
 922         }
 923         /* anything on noexec mount won't get PROT_EXEC */
 924         return prot;
 925 }
 926
 927 int security_mmap_file(struct file *file, unsigned long prot,
 928                         unsigned long flags)
 929 {
 930         int ret;
 931         ret = call_int_hook(mmap_file, 0, file, prot,
 932                                         mmap_prot(file, prot), flags);
 933         if (ret)
 934                 return ret;
 935         return ima_file_mmap(file, prot);
 936 }
 937
 938 int security_mmap_addr(unsigned long addr)
 939 {
 940         return call_int_hook(mmap_addr, 0, addr);
 941 }
 942
 943 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot,
 944                             unsigned long prot)
 945 {
 946         return call_int_hook(file_mprotect, 0, vma, reqprot, prot);
 947 }
 948
 949 int security_file_lock(struct file *file, unsigned int cmd)
 950 {
 951         return call_int_hook(file_lock, 0, file, cmd);
 952 }
 953
 954 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg)
 955 {
 956         return call_int_hook(file_fcntl, 0, file, cmd, arg);
 957 }
 958
 959 void security_file_set_fowner(struct file *file)
 960 {
 961         call_void_hook(file_set_fowner, file);
 962 }
 963
 964 int security_file_send_sigiotask(struct task_struct *tsk,
 965                                   struct fown_struct *fown, int sig)
 966 {
 967         return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig);
 968 }
 969
 970 int security_file_receive(struct file *file)
 971 {
 972         return call_int_hook(file_receive, 0, file);
 973 }
 974
 975 int security_file_open(struct file *file, const struct cred *cred)
 976 {
 977         int ret;
 978
 979         ret = call_int_hook(file_open, 0, file, cred);
 980         if (ret)
 981                 return ret;
 982
 983         return fsnotify_perm(file, MAY_OPEN);
 984 }
 985
 986 int security_task_alloc(struct task_struct *task, unsigned long clone_flags)
 987 {
 988         return call_int_hook(task_alloc, 0, task, clone_flags);
 989 }
 990
 991 void security_task_free(struct task_struct *task)
 992 {
 993         call_void_hook(task_free, task);
 994 }
 995
 996 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp)
 997 {
 998         return call_int_hook(cred_alloc_blank, 0, cred, gfp);
 999 }
1000
1001 void security_cred_free(struct cred *cred)
1002 {
1003         call_void_hook(cred_free, cred);
1004 }
1005
1006 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp)
1007 {
1008         return call_int_hook(cred_prepare, 0, new, old, gfp);
1009 }
1010
1011 void security_transfer_creds(struct cred *new, const struct cred *old)
1012 {
1013         call_void_hook(cred_transfer, new, old);
1014 }
1015
1016 void security_cred_getsecid(const struct cred *c, u32 *secid)
1017 {
1018         *secid = 0;
1019         call_void_hook(cred_getsecid, c, secid);
1020 }
1021 EXPORT_SYMBOL(security_cred_getsecid);
1022
1023 int security_kernel_act_as(struct cred *new, u32 secid)
1024 {
1025         return call_int_hook(kernel_act_as, 0, new, secid);
1026 }
1027
1028 int security_kernel_create_files_as(struct cred *new, struct inode *inode)
1029 {
1030         return call_int_hook(kernel_create_files_as, 0, new, inode);
1031 }
1032
1033 int security_kernel_module_request(char *kmod_name)
1034 {
1035         return call_int_hook(kernel_module_request, 0, kmod_name);
1036 }
1037
1038 int security_kernel_read_file(struct file *file, enum kernel_read_file_id id)
1039 {
1040         int ret;
1041
1042         ret = call_int_hook(kernel_read_file, 0, file, id);
1043         if (ret)
1044                 return ret;
1045         return ima_read_file(file, id);
1046 }
1047 EXPORT_SYMBOL_GPL(security_kernel_read_file);
1048
1049 int security_kernel_post_read_file(struct file *file, char *buf, loff_t size,
1050                                    enum kernel_read_file_id id)
1051 {
1052         int ret;
1053
1054         ret = call_int_hook(kernel_post_read_file, 0, file, buf, size, id);
1055         if (ret)
1056                 return ret;
1057         return ima_post_read_file(file, buf, size, id);
1058 }
1059 EXPORT_SYMBOL_GPL(security_kernel_post_read_file);
1060
1061 int security_kernel_load_data(enum kernel_load_data_id id)
1062 {
1063         int ret;
1064
1065         ret = call_int_hook(kernel_load_data, 0, id);
1066         if (ret)
1067                 return ret;
1068         return ima_load_data(id);
1069 }
1070 EXPORT_SYMBOL_GPL(security_kernel_load_data);
1071
1072 int security_task_fix_setuid(struct cred *new, const struct cred *old,
1073                              int flags)
1074 {
1075         return call_int_hook(task_fix_setuid, 0, new, old, flags);
1076 }
1077
1078 int security_task_setpgid(struct task_struct *p, pid_t pgid)
1079 {
1080         return call_int_hook(task_setpgid, 0, p, pgid);
1081 }
1082
1083 int security_task_getpgid(struct task_struct *p)
1084 {
1085         return call_int_hook(task_getpgid, 0, p);
1086 }
1087
1088 int security_task_getsid(struct task_struct *p)
1089 {
1090         return call_int_hook(task_getsid, 0, p);
1091 }
1092
1093 void security_task_getsecid(struct task_struct *p, u32 *secid)
1094 {
1095         *secid = 0;
1096         call_void_hook(task_getsecid, p, secid);
1097 }
1098 EXPORT_SYMBOL(security_task_getsecid);
1099
1100 int security_task_setnice(struct task_struct *p, int nice)
1101 {
1102         return call_int_hook(task_setnice, 0, p, nice);
1103 }
1104
1105 int security_task_setioprio(struct task_struct *p, int ioprio)
1106 {
1107         return call_int_hook(task_setioprio, 0, p, ioprio);
1108 }
1109
1110 int security_task_getioprio(struct task_struct *p)
1111 {
1112         return call_int_hook(task_getioprio, 0, p);
1113 }
1114
1115 int security_task_prlimit(const struct cred *cred, const struct cred *tcred,
1116                           unsigned int flags)
1117 {
1118         return call_int_hook(task_prlimit, 0, cred, tcred, flags);
1119 }
1120
1121 int security_task_setrlimit(struct task_struct *p, unsigned int resource,
1122                 struct rlimit *new_rlim)
1123 {
1124         return call_int_hook(task_setrlimit, 0, p, resource, new_rlim);
1125 }
1126
1127 int security_task_setscheduler(struct task_struct *p)
1128 {
1129         return call_int_hook(task_setscheduler, 0, p);
1130 }
1131
1132 int security_task_getscheduler(struct task_struct *p)
1133 {
1134         return call_int_hook(task_getscheduler, 0, p);
1135 }
1136
1137 int security_task_movememory(struct task_struct *p)
1138 {
1139         return call_int_hook(task_movememory, 0, p);
1140 }
1141
1142 int security_task_kill(struct task_struct *p, struct siginfo *info,
1143                         int sig, const struct cred *cred)
1144 {
1145         return call_int_hook(task_kill, 0, p, info, sig, cred);
1146 }
1147
1148 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
1149                          unsigned long arg4, unsigned long arg5)
1150 {
1151         int thisrc;
1152         int rc = -ENOSYS;
1153         struct security_hook_list *hp;
1154
1155         hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
1156                 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
1157                 if (thisrc != -ENOSYS) {
1158                         rc = thisrc;
1159                         if (thisrc != 0)
1160                                 break;
1161                 }
1162         }
1163         return rc;
1164 }
1165
1166 void security_task_to_inode(struct task_struct *p, struct inode *inode)
1167 {
1168         call_void_hook(task_to_inode, p, inode);
1169 }
1170
1171 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag)
1172 {
1173         return call_int_hook(ipc_permission, 0, ipcp, flag);
1174 }
1175
1176 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid)
1177 {
1178         *secid = 0;
1179         call_void_hook(ipc_getsecid, ipcp, secid);
1180 }
1181
1182 int security_msg_msg_alloc(struct msg_msg *msg)
1183 {
1184         return call_int_hook(msg_msg_alloc_security, 0, msg);
1185 }
1186
1187 void security_msg_msg_free(struct msg_msg *msg)
1188 {
1189         call_void_hook(msg_msg_free_security, msg);
1190 }
1191
1192 int security_msg_queue_alloc(struct kern_ipc_perm *msq)
1193 {
1194         return call_int_hook(msg_queue_alloc_security, 0, msq);
1195 }
1196
1197 void security_msg_queue_free(struct kern_ipc_perm *msq)
1198 {
1199         call_void_hook(msg_queue_free_security, msq);
1200 }
1201
1202 int security_msg_queue_associate(struct kern_ipc_perm *msq, int msqflg)
1203 {
1204         return call_int_hook(msg_queue_associate, 0, msq, msqflg);
1205 }
1206
1207 int security_msg_queue_msgctl(struct kern_ipc_perm *msq, int cmd)
1208 {
1209         return call_int_hook(msg_queue_msgctl, 0, msq, cmd);
1210 }
1211
1212 int security_msg_queue_msgsnd(struct kern_ipc_perm *msq,
1213                                struct msg_msg *msg, int msqflg)
1214 {
1215         return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg);
1216 }
1217
1218 int security_msg_queue_msgrcv(struct kern_ipc_perm *msq, struct msg_msg *msg,
1219                                struct task_struct *target, long type, int mode)
1220 {
1221         return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode);
1222 }
1223
1224 int security_shm_alloc(struct kern_ipc_perm *shp)
1225 {
1226         return call_int_hook(shm_alloc_security, 0, shp);
1227 }
1228
1229 void security_shm_free(struct kern_ipc_perm *shp)
1230 {
1231         call_void_hook(shm_free_security, shp);
1232 }
1233
1234 int security_shm_associate(struct kern_ipc_perm *shp, int shmflg)
1235 {
1236         return call_int_hook(shm_associate, 0, shp, shmflg);
1237 }
1238
1239 int security_shm_shmctl(struct kern_ipc_perm *shp, int cmd)
1240 {
1241         return call_int_hook(shm_shmctl, 0, shp, cmd);
1242 }
1243
1244 int security_shm_shmat(struct kern_ipc_perm *shp, char __user *shmaddr, int shmflg)
1245 {
1246         return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg);
1247 }
1248
1249 int security_sem_alloc(struct kern_ipc_perm *sma)
1250 {
1251         return call_int_hook(sem_alloc_security, 0, sma);
1252 }
1253
1254 void security_sem_free(struct kern_ipc_perm *sma)
1255 {
1256         call_void_hook(sem_free_security, sma);
1257 }
1258
1259 int security_sem_associate(struct kern_ipc_perm *sma, int semflg)
1260 {
1261         return call_int_hook(sem_associate, 0, sma, semflg);
1262 }
1263
1264 int security_sem_semctl(struct kern_ipc_perm *sma, int cmd)
1265 {
1266         return call_int_hook(sem_semctl, 0, sma, cmd);
1267 }
1268
1269 int security_sem_semop(struct kern_ipc_perm *sma, struct sembuf *sops,
1270                         unsigned nsops, int alter)
1271 {
1272         return call_int_hook(sem_semop, 0, sma, sops, nsops, alter);
1273 }
1274
1275 void security_d_instantiate(struct dentry *dentry, struct inode *inode)
1276 {
1277         if (unlikely(inode && IS_PRIVATE(inode)))
1278                 return;
1279         call_void_hook(d_instantiate, dentry, inode);
1280 }
1281 EXPORT_SYMBOL(security_d_instantiate);
1282
1283 int security_getprocattr(struct task_struct *p, char *name, char **value)
1284 {
1285         return call_int_hook(getprocattr, -EINVAL, p, name, value);
1286 }
1287
1288 int security_setprocattr(const char *name, void *value, size_t size)
1289 {
1290         return call_int_hook(setprocattr, -EINVAL, name, value, size);
1291 }
1292
1293 int security_netlink_send(struct sock *sk, struct sk_buff *skb)
1294 {
1295         return call_int_hook(netlink_send, 0, sk, skb);
1296 }
1297
1298 int security_ismaclabel(const char *name)
1299 {
1300         return call_int_hook(ismaclabel, 0, name);
1301 }
1302 EXPORT_SYMBOL(security_ismaclabel);
1303
1304 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen)
1305 {
1306         return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata,
1307                                 seclen);
1308 }
1309 EXPORT_SYMBOL(security_secid_to_secctx);
1310
1311 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid)
1312 {
1313         *secid = 0;
1314         return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid);
1315 }
1316 EXPORT_SYMBOL(security_secctx_to_secid);
1317
1318 void security_release_secctx(char *secdata, u32 seclen)
1319 {
1320         call_void_hook(release_secctx, secdata, seclen);
1321 }
1322 EXPORT_SYMBOL(security_release_secctx);
1323
1324 void security_inode_invalidate_secctx(struct inode *inode)
1325 {
1326         call_void_hook(inode_invalidate_secctx, inode);
1327 }
1328 EXPORT_SYMBOL(security_inode_invalidate_secctx);
1329
1330 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen)
1331 {
1332         return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen);
1333 }
1334 EXPORT_SYMBOL(security_inode_notifysecctx);
1335
1336 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen)
1337 {
1338         return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen);
1339 }
1340 EXPORT_SYMBOL(security_inode_setsecctx);
1341
1342 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen)
1343 {
1344         return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen);
1345 }
1346 EXPORT_SYMBOL(security_inode_getsecctx);
1347
1348 #ifdef CONFIG_SECURITY_NETWORK
1349
1350 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk)
1351 {
1352         return call_int_hook(unix_stream_connect, 0, sock, other, newsk);
1353 }
1354 EXPORT_SYMBOL(security_unix_stream_connect);
1355
1356 int security_unix_may_send(struct socket *sock,  struct socket *other)
1357 {
1358         return call_int_hook(unix_may_send, 0, sock, other);
1359 }
1360 EXPORT_SYMBOL(security_unix_may_send);
1361
1362 int security_socket_create(int family, int type, int protocol, int kern)
1363 {
1364         return call_int_hook(socket_create, 0, family, type, protocol, kern);
1365 }
1366
1367 int security_socket_post_create(struct socket *sock, int family,
1368                                 int type, int protocol, int kern)
1369 {
1370         return call_int_hook(socket_post_create, 0, sock, family, type,
1371                                                 protocol, kern);
1372 }
1373
1374 int security_socket_socketpair(struct socket *socka, struct socket *sockb)
1375 {
1376         return call_int_hook(socket_socketpair, 0, socka, sockb);
1377 }
1378 EXPORT_SYMBOL(security_socket_socketpair);
1379
1380 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen)
1381 {
1382         return call_int_hook(socket_bind, 0, sock, address, addrlen);
1383 }
1384
1385 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen)
1386 {
1387         return call_int_hook(socket_connect, 0, sock, address, addrlen);
1388 }
1389
1390 int security_socket_listen(struct socket *sock, int backlog)
1391 {
1392         return call_int_hook(socket_listen, 0, sock, backlog);
1393 }
1394
1395 int security_socket_accept(struct socket *sock, struct socket *newsock)
1396 {
1397         return call_int_hook(socket_accept, 0, sock, newsock);
1398 }
1399
1400 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size)
1401 {
1402         return call_int_hook(socket_sendmsg, 0, sock, msg, size);
1403 }
1404
1405 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg,
1406                             int size, int flags)
1407 {
1408         return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags);
1409 }
1410
1411 int security_socket_getsockname(struct socket *sock)
1412 {
1413         return call_int_hook(socket_getsockname, 0, sock);
1414 }
1415
1416 int security_socket_getpeername(struct socket *sock)
1417 {
1418         return call_int_hook(socket_getpeername, 0, sock);
1419 }
1420
1421 int security_socket_getsockopt(struct socket *sock, int level, int optname)
1422 {
1423         return call_int_hook(socket_getsockopt, 0, sock, level, optname);
1424 }
1425
1426 int security_socket_setsockopt(struct socket *sock, int level, int optname)
1427 {
1428         return call_int_hook(socket_setsockopt, 0, sock, level, optname);
1429 }
1430
1431 int security_socket_shutdown(struct socket *sock, int how)
1432 {
1433         return call_int_hook(socket_shutdown, 0, sock, how);
1434 }
1435
1436 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb)
1437 {
1438         return call_int_hook(socket_sock_rcv_skb, 0, sk, skb);
1439 }
1440 EXPORT_SYMBOL(security_sock_rcv_skb);
1441
1442 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval,
1443                                       int __user *optlen, unsigned len)
1444 {
1445         return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock,
1446                                 optval, optlen, len);
1447 }
1448
1449 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid)
1450 {
1451         return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock,
1452                              skb, secid);
1453 }
1454 EXPORT_SYMBOL(security_socket_getpeersec_dgram);
1455
1456 int security_sk_alloc(struct sock *sk, int family, gfp_t priority)
1457 {
1458         return call_int_hook(sk_alloc_security, 0, sk, family, priority);
1459 }
1460
1461 void security_sk_free(struct sock *sk)
1462 {
1463         call_void_hook(sk_free_security, sk);
1464 }
1465
1466 void security_sk_clone(const struct sock *sk, struct sock *newsk)
1467 {
1468         call_void_hook(sk_clone_security, sk, newsk);
1469 }
1470 EXPORT_SYMBOL(security_sk_clone);
1471
1472 void security_sk_classify_flow(struct sock *sk, struct flowi *fl)
1473 {
1474         call_void_hook(sk_getsecid, sk, &fl->flowi_secid);
1475 }
1476 EXPORT_SYMBOL(security_sk_classify_flow);
1477
1478 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl)
1479 {
1480         call_void_hook(req_classify_flow, req, fl);
1481 }
1482 EXPORT_SYMBOL(security_req_classify_flow);
1483
1484 void security_sock_graft(struct sock *sk, struct socket *parent)
1485 {
1486         call_void_hook(sock_graft, sk, parent);
1487 }
1488 EXPORT_SYMBOL(security_sock_graft);
1489
1490 int security_inet_conn_request(struct sock *sk,
1491                         struct sk_buff *skb, struct request_sock *req)
1492 {
1493         return call_int_hook(inet_conn_request, 0, sk, skb, req);
1494 }
1495 EXPORT_SYMBOL(security_inet_conn_request);
1496
1497 void security_inet_csk_clone(struct sock *newsk,
1498                         const struct request_sock *req)
1499 {
1500         call_void_hook(inet_csk_clone, newsk, req);
1501 }
1502
1503 void security_inet_conn_established(struct sock *sk,
1504                         struct sk_buff *skb)
1505 {
1506         call_void_hook(inet_conn_established, sk, skb);
1507 }
1508 EXPORT_SYMBOL(security_inet_conn_established);
1509
1510 int security_secmark_relabel_packet(u32 secid)
1511 {
1512         return call_int_hook(secmark_relabel_packet, 0, secid);
1513 }
1514 EXPORT_SYMBOL(security_secmark_relabel_packet);
1515
1516 void security_secmark_refcount_inc(void)
1517 {
1518         call_void_hook(secmark_refcount_inc);
1519 }
1520 EXPORT_SYMBOL(security_secmark_refcount_inc);
1521
1522 void security_secmark_refcount_dec(void)
1523 {
1524         call_void_hook(secmark_refcount_dec);
1525 }
1526 EXPORT_SYMBOL(security_secmark_refcount_dec);
1527
1528 int security_tun_dev_alloc_security(void **security)
1529 {
1530         return call_int_hook(tun_dev_alloc_security, 0, security);
1531 }
1532 EXPORT_SYMBOL(security_tun_dev_alloc_security);
1533
1534 void security_tun_dev_free_security(void *security)
1535 {
1536         call_void_hook(tun_dev_free_security, security);
1537 }
1538 EXPORT_SYMBOL(security_tun_dev_free_security);
1539
1540 int security_tun_dev_create(void)
1541 {
1542         return call_int_hook(tun_dev_create, 0);
1543 }
1544 EXPORT_SYMBOL(security_tun_dev_create);
1545
1546 int security_tun_dev_attach_queue(void *security)
1547 {
1548         return call_int_hook(tun_dev_attach_queue, 0, security);
1549 }
1550 EXPORT_SYMBOL(security_tun_dev_attach_queue);
1551
1552 int security_tun_dev_attach(struct sock *sk, void *security)
1553 {
1554         return call_int_hook(tun_dev_attach, 0, sk, security);
1555 }
1556 EXPORT_SYMBOL(security_tun_dev_attach);
1557
1558 int security_tun_dev_open(void *security)
1559 {
1560         return call_int_hook(tun_dev_open, 0, security);
1561 }
1562 EXPORT_SYMBOL(security_tun_dev_open);
1563
1564 int security_sctp_assoc_request(struct sctp_endpoint *ep, struct sk_buff *skb)
1565 {
1566         return call_int_hook(sctp_assoc_request, 0, ep, skb);
1567 }
1568 EXPORT_SYMBOL(security_sctp_assoc_request);
1569
1570 int security_sctp_bind_connect(struct sock *sk, int optname,
1571                                struct sockaddr *address, int addrlen)
1572 {
1573         return call_int_hook(sctp_bind_connect, 0, sk, optname,
1574                              address, addrlen);
1575 }
1576 EXPORT_SYMBOL(security_sctp_bind_connect);
1577
1578 void security_sctp_sk_clone(struct sctp_endpoint *ep, struct sock *sk,
1579                             struct sock *newsk)
1580 {
1581         call_void_hook(sctp_sk_clone, ep, sk, newsk);
1582 }
1583 EXPORT_SYMBOL(security_sctp_sk_clone);
1584
1585 #endif  /* CONFIG_SECURITY_NETWORK */
1586
1587 #ifdef CONFIG_SECURITY_INFINIBAND
1588
1589 int security_ib_pkey_access(void *sec, u64 subnet_prefix, u16 pkey)
1590 {
1591         return call_int_hook(ib_pkey_access, 0, sec, subnet_prefix, pkey);
1592 }
1593 EXPORT_SYMBOL(security_ib_pkey_access);
1594
1595 int security_ib_endport_manage_subnet(void *sec, const char *dev_name, u8 port_num)
1596 {
1597         return call_int_hook(ib_endport_manage_subnet, 0, sec, dev_name, port_num);
1598 }
1599 EXPORT_SYMBOL(security_ib_endport_manage_subnet);
1600
1601 int security_ib_alloc_security(void **sec)
1602 {
1603         return call_int_hook(ib_alloc_security, 0, sec);
1604 }
1605 EXPORT_SYMBOL(security_ib_alloc_security);
1606
1607 void security_ib_free_security(void *sec)
1608 {
1609         call_void_hook(ib_free_security, sec);
1610 }
1611 EXPORT_SYMBOL(security_ib_free_security);
1612 #endif  /* CONFIG_SECURITY_INFINIBAND */
1613
1614 #ifdef CONFIG_SECURITY_NETWORK_XFRM
1615
1616 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp,
1617                                struct xfrm_user_sec_ctx *sec_ctx,
1618                                gfp_t gfp)
1619 {
1620         return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp);
1621 }
1622 EXPORT_SYMBOL(security_xfrm_policy_alloc);
1623
1624 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx,
1625                               struct xfrm_sec_ctx **new_ctxp)
1626 {
1627         return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp);
1628 }
1629
1630 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx)
1631 {
1632         call_void_hook(xfrm_policy_free_security, ctx);
1633 }
1634 EXPORT_SYMBOL(security_xfrm_policy_free);
1635
1636 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx)
1637 {
1638         return call_int_hook(xfrm_policy_delete_security, 0, ctx);
1639 }
1640
1641 int security_xfrm_state_alloc(struct xfrm_state *x,
1642                               struct xfrm_user_sec_ctx *sec_ctx)
1643 {
1644         return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx);
1645 }
1646 EXPORT_SYMBOL(security_xfrm_state_alloc);
1647
1648 int security_xfrm_state_alloc_acquire(struct xfrm_state *x,
1649                                       struct xfrm_sec_ctx *polsec, u32 secid)
1650 {
1651         return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid);
1652 }
1653
1654 int security_xfrm_state_delete(struct xfrm_state *x)
1655 {
1656         return call_int_hook(xfrm_state_delete_security, 0, x);
1657 }
1658 EXPORT_SYMBOL(security_xfrm_state_delete);
1659
1660 void security_xfrm_state_free(struct xfrm_state *x)
1661 {
1662         call_void_hook(xfrm_state_free_security, x);
1663 }
1664
1665 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir)
1666 {
1667         return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir);
1668 }
1669
1670 int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
1671                                        struct xfrm_policy *xp,
1672                                        const struct flowi *fl)
1673 {
1674         struct security_hook_list *hp;
1675         int rc = 1;
1676
1677         /*
1678          * Since this function is expected to return 0 or 1, the judgment
1679          * becomes difficult if multiple LSMs supply this call. Fortunately,
1680          * we can use the first LSM's judgment because currently only SELinux
1681          * supplies this call.
1682          *
1683          * For speed optimization, we explicitly break the loop rather than
1684          * using the macro
1685          */
1686         hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
1687                                 list) {
1688                 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
1689                 break;
1690         }
1691         return rc;
1692 }
1693
1694 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid)
1695 {
1696         return call_int_hook(xfrm_decode_session, 0, skb, secid, 1);
1697 }
1698
1699 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl)
1700 {
1701         int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid,
1702                                 0);
1703
1704         BUG_ON(rc);
1705 }
1706 EXPORT_SYMBOL(security_skb_classify_flow);
1707
1708 #endif  /* CONFIG_SECURITY_NETWORK_XFRM */
1709
1710 #ifdef CONFIG_KEYS
1711
1712 int security_key_alloc(struct key *key, const struct cred *cred,
1713                        unsigned long flags)
1714 {
1715         return call_int_hook(key_alloc, 0, key, cred, flags);
1716 }
1717
1718 void security_key_free(struct key *key)
1719 {
1720         call_void_hook(key_free, key);
1721 }
1722
1723 int security_key_permission(key_ref_t key_ref,
1724                             const struct cred *cred, unsigned perm)
1725 {
1726         return call_int_hook(key_permission, 0, key_ref, cred, perm);
1727 }
1728
1729 int security_key_getsecurity(struct key *key, char **_buffer)
1730 {
1731         *_buffer = NULL;
1732         return call_int_hook(key_getsecurity, 0, key, _buffer);
1733 }
1734
1735 #endif  /* CONFIG_KEYS */
1736
1737 #ifdef CONFIG_AUDIT
1738
1739 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule)
1740 {
1741         return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule);
1742 }
1743
1744 int security_audit_rule_known(struct audit_krule *krule)
1745 {
1746         return call_int_hook(audit_rule_known, 0, krule);
1747 }
1748
1749 void security_audit_rule_free(void *lsmrule)
1750 {
1751         call_void_hook(audit_rule_free, lsmrule);
1752 }
1753
1754 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule,
1755                               struct audit_context *actx)
1756 {
1757         return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule,
1758                                 actx);
1759 }
1760 #endif /* CONFIG_AUDIT */
1761
1762 #ifdef CONFIG_BPF_SYSCALL
1763 int security_bpf(int cmd, union bpf_attr *attr, unsigned int size)
1764 {
1765         return call_int_hook(bpf, 0, cmd, attr, size);
1766 }
1767 int security_bpf_map(struct bpf_map *map, fmode_t fmode)
1768 {
1769         return call_int_hook(bpf_map, 0, map, fmode);
1770 }
1771 int security_bpf_prog(struct bpf_prog *prog)
1772 {
1773         return call_int_hook(bpf_prog, 0, prog);
1774 }
1775 int security_bpf_map_alloc(struct bpf_map *map)
1776 {
1777         return call_int_hook(bpf_map_alloc_security, 0, map);
1778 }
1779 int security_bpf_prog_alloc(struct bpf_prog_aux *aux)
1780 {
1781         return call_int_hook(bpf_prog_alloc_security, 0, aux);
1782 }
1783 void security_bpf_map_free(struct bpf_map *map)
1784 {
1785         call_void_hook(bpf_map_free_security, map);
1786 }
1787 void security_bpf_prog_free(struct bpf_prog_aux *aux)
1788 {
1789         call_void_hook(bpf_prog_free_security, aux);
1790 }
1791 #endif /* CONFIG_BPF_SYSCALL */