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