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/* Boot-time LSM user choice */ 36static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] = 37 CONFIG_DEFAULT_SECURITY; 38 39static void __init do_security_initcalls(void) 40{ 41 initcall_t *call; 42 call = __security_initcall_start; 43 while (call < __security_initcall_end) { 44 (*call) (); 45 call++; 46 } 47} 48 49/** 50 * security_init - initializes the security framework 51 * 52 * This should be called early in the kernel initialization sequence. 53 */ 54int __init security_init(void) 55{ 56 pr_info("Security Framework initialized\n"); 57 58 /* 59 * Load minor LSMs, with the capability module always first. 60 */ 61 capability_add_hooks(); 62 yama_add_hooks(); 63 64 /* 65 * Load all the remaining security modules. 66 */ 67 do_security_initcalls(); 68 69 return 0; 70} 71 72/* Save user chosen LSM */ 73static int __init choose_lsm(char *str) 74{ 75 strncpy(chosen_lsm, str, SECURITY_NAME_MAX); 76 return 1; 77} 78__setup("security=", choose_lsm); 79 80/** 81 * security_module_enable - Load given security module on boot ? 82 * @module: the name of the module 83 * 84 * Each LSM must pass this method before registering its own operations 85 * to avoid security registration races. This method may also be used 86 * to check if your LSM is currently loaded during kernel initialization. 87 * 88 * Return true if: 89 * -The passed LSM is the one chosen by user at boot time, 90 * -or the passed LSM is configured as the default and the user did not 91 * choose an alternate LSM at boot time. 92 * Otherwise, return false. 93 */ 94int __init security_module_enable(const char *module) 95{ 96 return !strcmp(module, chosen_lsm); 97} 98 99/* 100 * Hook list operation macros. 101 * 102 * call_void_hook: 103 * This is a hook that does not return a value. 104 * 105 * call_int_hook: 106 * This is a hook that returns a value. 107 */ 108 109#define call_void_hook(FUNC, ...) \ 110 do { \ 111 struct security_hook_list *P; \ 112 \ 113 list_for_each_entry(P, &security_hook_heads.FUNC, list) \ 114 P->hook.FUNC(__VA_ARGS__); \ 115 } while (0) 116 117#define call_int_hook(FUNC, IRC, ...) ({ \ 118 int RC = IRC; \ 119 do { \ 120 struct security_hook_list *P; \ 121 \ 122 list_for_each_entry(P, &security_hook_heads.FUNC, list) { \ 123 RC = P->hook.FUNC(__VA_ARGS__); \ 124 if (RC != 0) \ 125 break; \ 126 } \ 127 } while (0); \ 128 RC; \ 129}) 130 131/* Security operations */ 132 133int security_binder_set_context_mgr(struct task_struct *mgr) 134{ 135 return call_int_hook(binder_set_context_mgr, 0, mgr); 136} 137 138int security_binder_transaction(struct task_struct *from, 139 struct task_struct *to) 140{ 141 return call_int_hook(binder_transaction, 0, from, to); 142} 143 144int security_binder_transfer_binder(struct task_struct *from, 145 struct task_struct *to) 146{ 147 return call_int_hook(binder_transfer_binder, 0, from, to); 148} 149 150int security_binder_transfer_file(struct task_struct *from, 151 struct task_struct *to, struct file *file) 152{ 153 return call_int_hook(binder_transfer_file, 0, from, to, file); 154} 155 156int security_ptrace_access_check(struct task_struct *child, unsigned int mode) 157{ 158 return call_int_hook(ptrace_access_check, 0, child, mode); 159} 160 161int security_ptrace_traceme(struct task_struct *parent) 162{ 163 return call_int_hook(ptrace_traceme, 0, parent); 164} 165 166int security_capget(struct task_struct *target, 167 kernel_cap_t *effective, 168 kernel_cap_t *inheritable, 169 kernel_cap_t *permitted) 170{ 171 return call_int_hook(capget, 0, target, 172 effective, inheritable, permitted); 173} 174 175int security_capset(struct cred *new, const struct cred *old, 176 const kernel_cap_t *effective, 177 const kernel_cap_t *inheritable, 178 const kernel_cap_t *permitted) 179{ 180 return call_int_hook(capset, 0, new, old, 181 effective, inheritable, permitted); 182} 183 184int security_capable(const struct cred *cred, struct user_namespace *ns, 185 int cap) 186{ 187 return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_AUDIT); 188} 189 190int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 191 int cap) 192{ 193 return call_int_hook(capable, 0, cred, ns, cap, SECURITY_CAP_NOAUDIT); 194} 195 196int security_quotactl(int cmds, int type, int id, struct super_block *sb) 197{ 198 return call_int_hook(quotactl, 0, cmds, type, id, sb); 199} 200 201int security_quota_on(struct dentry *dentry) 202{ 203 return call_int_hook(quota_on, 0, dentry); 204} 205 206int security_syslog(int type) 207{ 208 return call_int_hook(syslog, 0, type); 209} 210 211int security_settime(const struct timespec *ts, const struct timezone *tz) 212{ 213 return call_int_hook(settime, 0, ts, tz); 214} 215 216int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 217{ 218 struct security_hook_list *hp; 219 int cap_sys_admin = 1; 220 int rc; 221 222 /* 223 * The module will respond with a positive value if 224 * it thinks the __vm_enough_memory() call should be 225 * made with the cap_sys_admin set. If all of the modules 226 * agree that it should be set it will. If any module 227 * thinks it should not be set it won't. 228 */ 229 list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) { 230 rc = hp->hook.vm_enough_memory(mm, pages); 231 if (rc <= 0) { 232 cap_sys_admin = 0; 233 break; 234 } 235 } 236 return __vm_enough_memory(mm, pages, cap_sys_admin); 237} 238 239int security_bprm_set_creds(struct linux_binprm *bprm) 240{ 241 return call_int_hook(bprm_set_creds, 0, bprm); 242} 243 244int security_bprm_check(struct linux_binprm *bprm) 245{ 246 int ret; 247 248 ret = call_int_hook(bprm_check_security, 0, bprm); 249 if (ret) 250 return ret; 251 return ima_bprm_check(bprm); 252} 253 254void security_bprm_committing_creds(struct linux_binprm *bprm) 255{ 256 call_void_hook(bprm_committing_creds, bprm); 257} 258 259void security_bprm_committed_creds(struct linux_binprm *bprm) 260{ 261 call_void_hook(bprm_committed_creds, bprm); 262} 263 264int security_bprm_secureexec(struct linux_binprm *bprm) 265{ 266 return call_int_hook(bprm_secureexec, 0, bprm); 267} 268 269int security_sb_alloc(struct super_block *sb) 270{ 271 return call_int_hook(sb_alloc_security, 0, sb); 272} 273 274void security_sb_free(struct super_block *sb) 275{ 276 call_void_hook(sb_free_security, sb); 277} 278 279int security_sb_copy_data(char *orig, char *copy) 280{ 281 return call_int_hook(sb_copy_data, 0, orig, copy); 282} 283EXPORT_SYMBOL(security_sb_copy_data); 284 285int security_sb_remount(struct super_block *sb, void *data) 286{ 287 return call_int_hook(sb_remount, 0, sb, data); 288} 289 290int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 291{ 292 return call_int_hook(sb_kern_mount, 0, sb, flags, data); 293} 294 295int security_sb_show_options(struct seq_file *m, struct super_block *sb) 296{ 297 return call_int_hook(sb_show_options, 0, m, sb); 298} 299 300int security_sb_statfs(struct dentry *dentry) 301{ 302 return call_int_hook(sb_statfs, 0, dentry); 303} 304 305int security_sb_mount(const char *dev_name, struct path *path, 306 const char *type, unsigned long flags, void *data) 307{ 308 return call_int_hook(sb_mount, 0, dev_name, path, type, flags, data); 309} 310 311int security_sb_umount(struct vfsmount *mnt, int flags) 312{ 313 return call_int_hook(sb_umount, 0, mnt, flags); 314} 315 316int security_sb_pivotroot(struct path *old_path, struct path *new_path) 317{ 318 return call_int_hook(sb_pivotroot, 0, old_path, new_path); 319} 320 321int security_sb_set_mnt_opts(struct super_block *sb, 322 struct security_mnt_opts *opts, 323 unsigned long kern_flags, 324 unsigned long *set_kern_flags) 325{ 326 return call_int_hook(sb_set_mnt_opts, 327 opts->num_mnt_opts ? -EOPNOTSUPP : 0, sb, 328 opts, kern_flags, set_kern_flags); 329} 330EXPORT_SYMBOL(security_sb_set_mnt_opts); 331 332int security_sb_clone_mnt_opts(const struct super_block *oldsb, 333 struct super_block *newsb) 334{ 335 return call_int_hook(sb_clone_mnt_opts, 0, oldsb, newsb); 336} 337EXPORT_SYMBOL(security_sb_clone_mnt_opts); 338 339int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 340{ 341 return call_int_hook(sb_parse_opts_str, 0, options, opts); 342} 343EXPORT_SYMBOL(security_sb_parse_opts_str); 344 345int security_inode_alloc(struct inode *inode) 346{ 347 inode->i_security = NULL; 348 return call_int_hook(inode_alloc_security, 0, inode); 349} 350 351void security_inode_free(struct inode *inode) 352{ 353 integrity_inode_free(inode); 354 call_void_hook(inode_free_security, inode); 355} 356 357int security_dentry_init_security(struct dentry *dentry, int mode, 358 struct qstr *name, void **ctx, 359 u32 *ctxlen) 360{ 361 return call_int_hook(dentry_init_security, -EOPNOTSUPP, dentry, mode, 362 name, ctx, ctxlen); 363} 364EXPORT_SYMBOL(security_dentry_init_security); 365 366int security_inode_init_security(struct inode *inode, struct inode *dir, 367 const struct qstr *qstr, 368 const initxattrs initxattrs, void *fs_data) 369{ 370 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; 371 struct xattr *lsm_xattr, *evm_xattr, *xattr; 372 int ret; 373 374 if (unlikely(IS_PRIVATE(inode))) 375 return 0; 376 377 if (!initxattrs) 378 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, 379 dir, qstr, NULL, NULL, NULL); 380 memset(new_xattrs, 0, sizeof(new_xattrs)); 381 lsm_xattr = new_xattrs; 382 ret = call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, qstr, 383 &lsm_xattr->name, 384 &lsm_xattr->value, 385 &lsm_xattr->value_len); 386 if (ret) 387 goto out; 388 389 evm_xattr = lsm_xattr + 1; 390 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); 391 if (ret) 392 goto out; 393 ret = initxattrs(inode, new_xattrs, fs_data); 394out: 395 for (xattr = new_xattrs; xattr->value != NULL; xattr++) 396 kfree(xattr->value); 397 return (ret == -EOPNOTSUPP) ? 0 : ret; 398} 399EXPORT_SYMBOL(security_inode_init_security); 400 401int security_old_inode_init_security(struct inode *inode, struct inode *dir, 402 const struct qstr *qstr, const char **name, 403 void **value, size_t *len) 404{ 405 if (unlikely(IS_PRIVATE(inode))) 406 return -EOPNOTSUPP; 407 return call_int_hook(inode_init_security, -EOPNOTSUPP, inode, dir, 408 qstr, name, value, len); 409} 410EXPORT_SYMBOL(security_old_inode_init_security); 411 412#ifdef CONFIG_SECURITY_PATH 413int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode, 414 unsigned int dev) 415{ 416 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) 417 return 0; 418 return call_int_hook(path_mknod, 0, dir, dentry, mode, dev); 419} 420EXPORT_SYMBOL(security_path_mknod); 421 422int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode) 423{ 424 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) 425 return 0; 426 return call_int_hook(path_mkdir, 0, dir, dentry, mode); 427} 428EXPORT_SYMBOL(security_path_mkdir); 429 430int security_path_rmdir(struct path *dir, struct dentry *dentry) 431{ 432 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) 433 return 0; 434 return call_int_hook(path_rmdir, 0, dir, dentry); 435} 436 437int security_path_unlink(struct path *dir, struct dentry *dentry) 438{ 439 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) 440 return 0; 441 return call_int_hook(path_unlink, 0, dir, dentry); 442} 443EXPORT_SYMBOL(security_path_unlink); 444 445int security_path_symlink(struct path *dir, struct dentry *dentry, 446 const char *old_name) 447{ 448 if (unlikely(IS_PRIVATE(d_backing_inode(dir->dentry)))) 449 return 0; 450 return call_int_hook(path_symlink, 0, dir, dentry, old_name); 451} 452 453int security_path_link(struct dentry *old_dentry, struct path *new_dir, 454 struct dentry *new_dentry) 455{ 456 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) 457 return 0; 458 return call_int_hook(path_link, 0, old_dentry, new_dir, new_dentry); 459} 460 461int security_path_rename(struct path *old_dir, struct dentry *old_dentry, 462 struct path *new_dir, struct dentry *new_dentry, 463 unsigned int flags) 464{ 465 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || 466 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) 467 return 0; 468 469 if (flags & RENAME_EXCHANGE) { 470 int err = call_int_hook(path_rename, 0, new_dir, new_dentry, 471 old_dir, old_dentry); 472 if (err) 473 return err; 474 } 475 476 return call_int_hook(path_rename, 0, old_dir, old_dentry, new_dir, 477 new_dentry); 478} 479EXPORT_SYMBOL(security_path_rename); 480 481int security_path_truncate(struct path *path) 482{ 483 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) 484 return 0; 485 return call_int_hook(path_truncate, 0, path); 486} 487 488int security_path_chmod(struct path *path, umode_t mode) 489{ 490 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) 491 return 0; 492 return call_int_hook(path_chmod, 0, path, mode); 493} 494 495int security_path_chown(struct path *path, kuid_t uid, kgid_t gid) 496{ 497 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) 498 return 0; 499 return call_int_hook(path_chown, 0, path, uid, gid); 500} 501 502int security_path_chroot(struct path *path) 503{ 504 return call_int_hook(path_chroot, 0, path); 505} 506#endif 507 508int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) 509{ 510 if (unlikely(IS_PRIVATE(dir))) 511 return 0; 512 return call_int_hook(inode_create, 0, dir, dentry, mode); 513} 514EXPORT_SYMBOL_GPL(security_inode_create); 515 516int security_inode_link(struct dentry *old_dentry, struct inode *dir, 517 struct dentry *new_dentry) 518{ 519 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)))) 520 return 0; 521 return call_int_hook(inode_link, 0, old_dentry, dir, new_dentry); 522} 523 524int security_inode_unlink(struct inode *dir, struct dentry *dentry) 525{ 526 if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) 527 return 0; 528 return call_int_hook(inode_unlink, 0, dir, dentry); 529} 530 531int security_inode_symlink(struct inode *dir, struct dentry *dentry, 532 const char *old_name) 533{ 534 if (unlikely(IS_PRIVATE(dir))) 535 return 0; 536 return call_int_hook(inode_symlink, 0, dir, dentry, old_name); 537} 538 539int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 540{ 541 if (unlikely(IS_PRIVATE(dir))) 542 return 0; 543 return call_int_hook(inode_mkdir, 0, dir, dentry, mode); 544} 545EXPORT_SYMBOL_GPL(security_inode_mkdir); 546 547int security_inode_rmdir(struct inode *dir, struct dentry *dentry) 548{ 549 if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) 550 return 0; 551 return call_int_hook(inode_rmdir, 0, dir, dentry); 552} 553 554int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) 555{ 556 if (unlikely(IS_PRIVATE(dir))) 557 return 0; 558 return call_int_hook(inode_mknod, 0, dir, dentry, mode, dev); 559} 560 561int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 562 struct inode *new_dir, struct dentry *new_dentry, 563 unsigned int flags) 564{ 565 if (unlikely(IS_PRIVATE(d_backing_inode(old_dentry)) || 566 (d_is_positive(new_dentry) && IS_PRIVATE(d_backing_inode(new_dentry))))) 567 return 0; 568 569 if (flags & RENAME_EXCHANGE) { 570 int err = call_int_hook(inode_rename, 0, new_dir, new_dentry, 571 old_dir, old_dentry); 572 if (err) 573 return err; 574 } 575 576 return call_int_hook(inode_rename, 0, old_dir, old_dentry, 577 new_dir, new_dentry); 578} 579 580int security_inode_readlink(struct dentry *dentry) 581{ 582 if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) 583 return 0; 584 return call_int_hook(inode_readlink, 0, dentry); 585} 586 587int security_inode_follow_link(struct dentry *dentry, struct inode *inode, 588 bool rcu) 589{ 590 if (unlikely(IS_PRIVATE(inode))) 591 return 0; 592 return call_int_hook(inode_follow_link, 0, dentry, inode, rcu); 593} 594 595int security_inode_permission(struct inode *inode, int mask) 596{ 597 if (unlikely(IS_PRIVATE(inode))) 598 return 0; 599 return call_int_hook(inode_permission, 0, inode, mask); 600} 601 602int security_inode_setattr(struct dentry *dentry, struct iattr *attr) 603{ 604 int ret; 605 606 if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) 607 return 0; 608 ret = call_int_hook(inode_setattr, 0, dentry, attr); 609 if (ret) 610 return ret; 611 return evm_inode_setattr(dentry, attr); 612} 613EXPORT_SYMBOL_GPL(security_inode_setattr); 614 615int security_inode_getattr(const struct path *path) 616{ 617 if (unlikely(IS_PRIVATE(d_backing_inode(path->dentry)))) 618 return 0; 619 return call_int_hook(inode_getattr, 0, path); 620} 621 622int security_inode_setxattr(struct dentry *dentry, const char *name, 623 const void *value, size_t size, int flags) 624{ 625 int ret; 626 627 if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) 628 return 0; 629 /* 630 * SELinux and Smack integrate the cap call, 631 * so assume that all LSMs supplying this call do so. 632 */ 633 ret = call_int_hook(inode_setxattr, 1, dentry, name, value, size, 634 flags); 635 636 if (ret == 1) 637 ret = cap_inode_setxattr(dentry, name, value, size, flags); 638 if (ret) 639 return ret; 640 ret = ima_inode_setxattr(dentry, name, value, size); 641 if (ret) 642 return ret; 643 return evm_inode_setxattr(dentry, name, value, size); 644} 645 646void security_inode_post_setxattr(struct dentry *dentry, const char *name, 647 const void *value, size_t size, int flags) 648{ 649 if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) 650 return; 651 call_void_hook(inode_post_setxattr, dentry, name, value, size, flags); 652 evm_inode_post_setxattr(dentry, name, value, size); 653} 654 655int security_inode_getxattr(struct dentry *dentry, const char *name) 656{ 657 if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) 658 return 0; 659 return call_int_hook(inode_getxattr, 0, dentry, name); 660} 661 662int security_inode_listxattr(struct dentry *dentry) 663{ 664 if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) 665 return 0; 666 return call_int_hook(inode_listxattr, 0, dentry); 667} 668 669int security_inode_removexattr(struct dentry *dentry, const char *name) 670{ 671 int ret; 672 673 if (unlikely(IS_PRIVATE(d_backing_inode(dentry)))) 674 return 0; 675 /* 676 * SELinux and Smack integrate the cap call, 677 * so assume that all LSMs supplying this call do so. 678 */ 679 ret = call_int_hook(inode_removexattr, 1, dentry, name); 680 if (ret == 1) 681 ret = cap_inode_removexattr(dentry, name); 682 if (ret) 683 return ret; 684 ret = ima_inode_removexattr(dentry, name); 685 if (ret) 686 return ret; 687 return evm_inode_removexattr(dentry, name); 688} 689 690int security_inode_need_killpriv(struct dentry *dentry) 691{ 692 return call_int_hook(inode_need_killpriv, 0, dentry); 693} 694 695int security_inode_killpriv(struct dentry *dentry) 696{ 697 return call_int_hook(inode_killpriv, 0, dentry); 698} 699 700int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc) 701{ 702 if (unlikely(IS_PRIVATE(inode))) 703 return -EOPNOTSUPP; 704 return call_int_hook(inode_getsecurity, -EOPNOTSUPP, inode, name, 705 buffer, alloc); 706} 707 708int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 709{ 710 if (unlikely(IS_PRIVATE(inode))) 711 return -EOPNOTSUPP; 712 return call_int_hook(inode_setsecurity, -EOPNOTSUPP, inode, name, 713 value, size, flags); 714} 715 716int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 717{ 718 if (unlikely(IS_PRIVATE(inode))) 719 return 0; 720 return call_int_hook(inode_listsecurity, 0, inode, buffer, buffer_size); 721} 722EXPORT_SYMBOL(security_inode_listsecurity); 723 724void security_inode_getsecid(const struct inode *inode, u32 *secid) 725{ 726 call_void_hook(inode_getsecid, inode, secid); 727} 728 729int security_file_permission(struct file *file, int mask) 730{ 731 int ret; 732 733 ret = call_int_hook(file_permission, 0, file, mask); 734 if (ret) 735 return ret; 736 737 return fsnotify_perm(file, mask); 738} 739 740int security_file_alloc(struct file *file) 741{ 742 return call_int_hook(file_alloc_security, 0, file); 743} 744 745void security_file_free(struct file *file) 746{ 747 call_void_hook(file_free_security, file); 748} 749 750int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 751{ 752 return call_int_hook(file_ioctl, 0, file, cmd, arg); 753} 754 755static inline unsigned long mmap_prot(struct file *file, unsigned long prot) 756{ 757 /* 758 * Does we have PROT_READ and does the application expect 759 * it to imply PROT_EXEC? If not, nothing to talk about... 760 */ 761 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) 762 return prot; 763 if (!(current->personality & READ_IMPLIES_EXEC)) 764 return prot; 765 /* 766 * if that's an anonymous mapping, let it. 767 */ 768 if (!file) 769 return prot | PROT_EXEC; 770 /* 771 * ditto if it's not on noexec mount, except that on !MMU we need 772 * NOMMU_MAP_EXEC (== VM_MAYEXEC) in this case 773 */ 774 if (!path_noexec(&file->f_path)) { 775#ifndef CONFIG_MMU 776 if (file->f_op->mmap_capabilities) { 777 unsigned caps = file->f_op->mmap_capabilities(file); 778 if (!(caps & NOMMU_MAP_EXEC)) 779 return prot; 780 } 781#endif 782 return prot | PROT_EXEC; 783 } 784 /* anything on noexec mount won't get PROT_EXEC */ 785 return prot; 786} 787 788int security_mmap_file(struct file *file, unsigned long prot, 789 unsigned long flags) 790{ 791 int ret; 792 ret = call_int_hook(mmap_file, 0, file, prot, 793 mmap_prot(file, prot), flags); 794 if (ret) 795 return ret; 796 return ima_file_mmap(file, prot); 797} 798 799int security_mmap_addr(unsigned long addr) 800{ 801 return call_int_hook(mmap_addr, 0, addr); 802} 803 804int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 805 unsigned long prot) 806{ 807 return call_int_hook(file_mprotect, 0, vma, reqprot, prot); 808} 809 810int security_file_lock(struct file *file, unsigned int cmd) 811{ 812 return call_int_hook(file_lock, 0, file, cmd); 813} 814 815int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) 816{ 817 return call_int_hook(file_fcntl, 0, file, cmd, arg); 818} 819 820void security_file_set_fowner(struct file *file) 821{ 822 call_void_hook(file_set_fowner, file); 823} 824 825int security_file_send_sigiotask(struct task_struct *tsk, 826 struct fown_struct *fown, int sig) 827{ 828 return call_int_hook(file_send_sigiotask, 0, tsk, fown, sig); 829} 830 831int security_file_receive(struct file *file) 832{ 833 return call_int_hook(file_receive, 0, file); 834} 835 836int security_file_open(struct file *file, const struct cred *cred) 837{ 838 int ret; 839 840 ret = call_int_hook(file_open, 0, file, cred); 841 if (ret) 842 return ret; 843 844 return fsnotify_perm(file, MAY_OPEN); 845} 846 847int security_task_create(unsigned long clone_flags) 848{ 849 return call_int_hook(task_create, 0, clone_flags); 850} 851 852void security_task_free(struct task_struct *task) 853{ 854 call_void_hook(task_free, task); 855} 856 857int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 858{ 859 return call_int_hook(cred_alloc_blank, 0, cred, gfp); 860} 861 862void security_cred_free(struct cred *cred) 863{ 864 call_void_hook(cred_free, cred); 865} 866 867int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) 868{ 869 return call_int_hook(cred_prepare, 0, new, old, gfp); 870} 871 872void security_transfer_creds(struct cred *new, const struct cred *old) 873{ 874 call_void_hook(cred_transfer, new, old); 875} 876 877int security_kernel_act_as(struct cred *new, u32 secid) 878{ 879 return call_int_hook(kernel_act_as, 0, new, secid); 880} 881 882int security_kernel_create_files_as(struct cred *new, struct inode *inode) 883{ 884 return call_int_hook(kernel_create_files_as, 0, new, inode); 885} 886 887int security_kernel_fw_from_file(struct file *file, char *buf, size_t size) 888{ 889 int ret; 890 891 ret = call_int_hook(kernel_fw_from_file, 0, file, buf, size); 892 if (ret) 893 return ret; 894 return ima_fw_from_file(file, buf, size); 895} 896EXPORT_SYMBOL_GPL(security_kernel_fw_from_file); 897 898int security_kernel_module_request(char *kmod_name) 899{ 900 return call_int_hook(kernel_module_request, 0, kmod_name); 901} 902 903int security_kernel_module_from_file(struct file *file) 904{ 905 int ret; 906 907 ret = call_int_hook(kernel_module_from_file, 0, file); 908 if (ret) 909 return ret; 910 return ima_module_check(file); 911} 912 913int security_task_fix_setuid(struct cred *new, const struct cred *old, 914 int flags) 915{ 916 return call_int_hook(task_fix_setuid, 0, new, old, flags); 917} 918 919int security_task_setpgid(struct task_struct *p, pid_t pgid) 920{ 921 return call_int_hook(task_setpgid, 0, p, pgid); 922} 923 924int security_task_getpgid(struct task_struct *p) 925{ 926 return call_int_hook(task_getpgid, 0, p); 927} 928 929int security_task_getsid(struct task_struct *p) 930{ 931 return call_int_hook(task_getsid, 0, p); 932} 933 934void security_task_getsecid(struct task_struct *p, u32 *secid) 935{ 936 *secid = 0; 937 call_void_hook(task_getsecid, p, secid); 938} 939EXPORT_SYMBOL(security_task_getsecid); 940 941int security_task_setnice(struct task_struct *p, int nice) 942{ 943 return call_int_hook(task_setnice, 0, p, nice); 944} 945 946int security_task_setioprio(struct task_struct *p, int ioprio) 947{ 948 return call_int_hook(task_setioprio, 0, p, ioprio); 949} 950 951int security_task_getioprio(struct task_struct *p) 952{ 953 return call_int_hook(task_getioprio, 0, p); 954} 955 956int security_task_setrlimit(struct task_struct *p, unsigned int resource, 957 struct rlimit *new_rlim) 958{ 959 return call_int_hook(task_setrlimit, 0, p, resource, new_rlim); 960} 961 962int security_task_setscheduler(struct task_struct *p) 963{ 964 return call_int_hook(task_setscheduler, 0, p); 965} 966 967int security_task_getscheduler(struct task_struct *p) 968{ 969 return call_int_hook(task_getscheduler, 0, p); 970} 971 972int security_task_movememory(struct task_struct *p) 973{ 974 return call_int_hook(task_movememory, 0, p); 975} 976 977int security_task_kill(struct task_struct *p, struct siginfo *info, 978 int sig, u32 secid) 979{ 980 return call_int_hook(task_kill, 0, p, info, sig, secid); 981} 982 983int security_task_wait(struct task_struct *p) 984{ 985 return call_int_hook(task_wait, 0, p); 986} 987 988int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 989 unsigned long arg4, unsigned long arg5) 990{ 991 int thisrc; 992 int rc = -ENOSYS; 993 struct security_hook_list *hp; 994 995 list_for_each_entry(hp, &security_hook_heads.task_prctl, list) { 996 thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5); 997 if (thisrc != -ENOSYS) { 998 rc = thisrc; 999 if (thisrc != 0) 1000 break; 1001 } 1002 } 1003 return rc; 1004} 1005 1006void security_task_to_inode(struct task_struct *p, struct inode *inode) 1007{ 1008 call_void_hook(task_to_inode, p, inode); 1009} 1010 1011int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) 1012{ 1013 return call_int_hook(ipc_permission, 0, ipcp, flag); 1014} 1015 1016void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 1017{ 1018 *secid = 0; 1019 call_void_hook(ipc_getsecid, ipcp, secid); 1020} 1021 1022int security_msg_msg_alloc(struct msg_msg *msg) 1023{ 1024 return call_int_hook(msg_msg_alloc_security, 0, msg); 1025} 1026 1027void security_msg_msg_free(struct msg_msg *msg) 1028{ 1029 call_void_hook(msg_msg_free_security, msg); 1030} 1031 1032int security_msg_queue_alloc(struct msg_queue *msq) 1033{ 1034 return call_int_hook(msg_queue_alloc_security, 0, msq); 1035} 1036 1037void security_msg_queue_free(struct msg_queue *msq) 1038{ 1039 call_void_hook(msg_queue_free_security, msq); 1040} 1041 1042int security_msg_queue_associate(struct msg_queue *msq, int msqflg) 1043{ 1044 return call_int_hook(msg_queue_associate, 0, msq, msqflg); 1045} 1046 1047int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 1048{ 1049 return call_int_hook(msg_queue_msgctl, 0, msq, cmd); 1050} 1051 1052int security_msg_queue_msgsnd(struct msg_queue *msq, 1053 struct msg_msg *msg, int msqflg) 1054{ 1055 return call_int_hook(msg_queue_msgsnd, 0, msq, msg, msqflg); 1056} 1057 1058int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 1059 struct task_struct *target, long type, int mode) 1060{ 1061 return call_int_hook(msg_queue_msgrcv, 0, msq, msg, target, type, mode); 1062} 1063 1064int security_shm_alloc(struct shmid_kernel *shp) 1065{ 1066 return call_int_hook(shm_alloc_security, 0, shp); 1067} 1068 1069void security_shm_free(struct shmid_kernel *shp) 1070{ 1071 call_void_hook(shm_free_security, shp); 1072} 1073 1074int security_shm_associate(struct shmid_kernel *shp, int shmflg) 1075{ 1076 return call_int_hook(shm_associate, 0, shp, shmflg); 1077} 1078 1079int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 1080{ 1081 return call_int_hook(shm_shmctl, 0, shp, cmd); 1082} 1083 1084int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) 1085{ 1086 return call_int_hook(shm_shmat, 0, shp, shmaddr, shmflg); 1087} 1088 1089int security_sem_alloc(struct sem_array *sma) 1090{ 1091 return call_int_hook(sem_alloc_security, 0, sma); 1092} 1093 1094void security_sem_free(struct sem_array *sma) 1095{ 1096 call_void_hook(sem_free_security, sma); 1097} 1098 1099int security_sem_associate(struct sem_array *sma, int semflg) 1100{ 1101 return call_int_hook(sem_associate, 0, sma, semflg); 1102} 1103 1104int security_sem_semctl(struct sem_array *sma, int cmd) 1105{ 1106 return call_int_hook(sem_semctl, 0, sma, cmd); 1107} 1108 1109int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 1110 unsigned nsops, int alter) 1111{ 1112 return call_int_hook(sem_semop, 0, sma, sops, nsops, alter); 1113} 1114 1115void security_d_instantiate(struct dentry *dentry, struct inode *inode) 1116{ 1117 if (unlikely(inode && IS_PRIVATE(inode))) 1118 return; 1119 call_void_hook(d_instantiate, dentry, inode); 1120} 1121EXPORT_SYMBOL(security_d_instantiate); 1122 1123int security_getprocattr(struct task_struct *p, char *name, char **value) 1124{ 1125 return call_int_hook(getprocattr, -EINVAL, p, name, value); 1126} 1127 1128int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) 1129{ 1130 return call_int_hook(setprocattr, -EINVAL, p, name, value, size); 1131} 1132 1133int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1134{ 1135 return call_int_hook(netlink_send, 0, sk, skb); 1136} 1137 1138int security_ismaclabel(const char *name) 1139{ 1140 return call_int_hook(ismaclabel, 0, name); 1141} 1142EXPORT_SYMBOL(security_ismaclabel); 1143 1144int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1145{ 1146 return call_int_hook(secid_to_secctx, -EOPNOTSUPP, secid, secdata, 1147 seclen); 1148} 1149EXPORT_SYMBOL(security_secid_to_secctx); 1150 1151int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) 1152{ 1153 *secid = 0; 1154 return call_int_hook(secctx_to_secid, 0, secdata, seclen, secid); 1155} 1156EXPORT_SYMBOL(security_secctx_to_secid); 1157 1158void security_release_secctx(char *secdata, u32 seclen) 1159{ 1160 call_void_hook(release_secctx, secdata, seclen); 1161} 1162EXPORT_SYMBOL(security_release_secctx); 1163 1164int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1165{ 1166 return call_int_hook(inode_notifysecctx, 0, inode, ctx, ctxlen); 1167} 1168EXPORT_SYMBOL(security_inode_notifysecctx); 1169 1170int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1171{ 1172 return call_int_hook(inode_setsecctx, 0, dentry, ctx, ctxlen); 1173} 1174EXPORT_SYMBOL(security_inode_setsecctx); 1175 1176int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1177{ 1178 return call_int_hook(inode_getsecctx, -EOPNOTSUPP, inode, ctx, ctxlen); 1179} 1180EXPORT_SYMBOL(security_inode_getsecctx); 1181 1182#ifdef CONFIG_SECURITY_NETWORK 1183 1184int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) 1185{ 1186 return call_int_hook(unix_stream_connect, 0, sock, other, newsk); 1187} 1188EXPORT_SYMBOL(security_unix_stream_connect); 1189 1190int security_unix_may_send(struct socket *sock, struct socket *other) 1191{ 1192 return call_int_hook(unix_may_send, 0, sock, other); 1193} 1194EXPORT_SYMBOL(security_unix_may_send); 1195 1196int security_socket_create(int family, int type, int protocol, int kern) 1197{ 1198 return call_int_hook(socket_create, 0, family, type, protocol, kern); 1199} 1200 1201int security_socket_post_create(struct socket *sock, int family, 1202 int type, int protocol, int kern) 1203{ 1204 return call_int_hook(socket_post_create, 0, sock, family, type, 1205 protocol, kern); 1206} 1207 1208int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) 1209{ 1210 return call_int_hook(socket_bind, 0, sock, address, addrlen); 1211} 1212 1213int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) 1214{ 1215 return call_int_hook(socket_connect, 0, sock, address, addrlen); 1216} 1217 1218int security_socket_listen(struct socket *sock, int backlog) 1219{ 1220 return call_int_hook(socket_listen, 0, sock, backlog); 1221} 1222 1223int security_socket_accept(struct socket *sock, struct socket *newsock) 1224{ 1225 return call_int_hook(socket_accept, 0, sock, newsock); 1226} 1227 1228int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) 1229{ 1230 return call_int_hook(socket_sendmsg, 0, sock, msg, size); 1231} 1232 1233int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1234 int size, int flags) 1235{ 1236 return call_int_hook(socket_recvmsg, 0, sock, msg, size, flags); 1237} 1238 1239int security_socket_getsockname(struct socket *sock) 1240{ 1241 return call_int_hook(socket_getsockname, 0, sock); 1242} 1243 1244int security_socket_getpeername(struct socket *sock) 1245{ 1246 return call_int_hook(socket_getpeername, 0, sock); 1247} 1248 1249int security_socket_getsockopt(struct socket *sock, int level, int optname) 1250{ 1251 return call_int_hook(socket_getsockopt, 0, sock, level, optname); 1252} 1253 1254int security_socket_setsockopt(struct socket *sock, int level, int optname) 1255{ 1256 return call_int_hook(socket_setsockopt, 0, sock, level, optname); 1257} 1258 1259int security_socket_shutdown(struct socket *sock, int how) 1260{ 1261 return call_int_hook(socket_shutdown, 0, sock, how); 1262} 1263 1264int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) 1265{ 1266 return call_int_hook(socket_sock_rcv_skb, 0, sk, skb); 1267} 1268EXPORT_SYMBOL(security_sock_rcv_skb); 1269 1270int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1271 int __user *optlen, unsigned len) 1272{ 1273 return call_int_hook(socket_getpeersec_stream, -ENOPROTOOPT, sock, 1274 optval, optlen, len); 1275} 1276 1277int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1278{ 1279 return call_int_hook(socket_getpeersec_dgram, -ENOPROTOOPT, sock, 1280 skb, secid); 1281} 1282EXPORT_SYMBOL(security_socket_getpeersec_dgram); 1283 1284int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1285{ 1286 return call_int_hook(sk_alloc_security, 0, sk, family, priority); 1287} 1288 1289void security_sk_free(struct sock *sk) 1290{ 1291 call_void_hook(sk_free_security, sk); 1292} 1293 1294void security_sk_clone(const struct sock *sk, struct sock *newsk) 1295{ 1296 call_void_hook(sk_clone_security, sk, newsk); 1297} 1298EXPORT_SYMBOL(security_sk_clone); 1299 1300void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1301{ 1302 call_void_hook(sk_getsecid, sk, &fl->flowi_secid); 1303} 1304EXPORT_SYMBOL(security_sk_classify_flow); 1305 1306void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1307{ 1308 call_void_hook(req_classify_flow, req, fl); 1309} 1310EXPORT_SYMBOL(security_req_classify_flow); 1311 1312void security_sock_graft(struct sock *sk, struct socket *parent) 1313{ 1314 call_void_hook(sock_graft, sk, parent); 1315} 1316EXPORT_SYMBOL(security_sock_graft); 1317 1318int security_inet_conn_request(struct sock *sk, 1319 struct sk_buff *skb, struct request_sock *req) 1320{ 1321 return call_int_hook(inet_conn_request, 0, sk, skb, req); 1322} 1323EXPORT_SYMBOL(security_inet_conn_request); 1324 1325void security_inet_csk_clone(struct sock *newsk, 1326 const struct request_sock *req) 1327{ 1328 call_void_hook(inet_csk_clone, newsk, req); 1329} 1330 1331void security_inet_conn_established(struct sock *sk, 1332 struct sk_buff *skb) 1333{ 1334 call_void_hook(inet_conn_established, sk, skb); 1335} 1336 1337int security_secmark_relabel_packet(u32 secid) 1338{ 1339 return call_int_hook(secmark_relabel_packet, 0, secid); 1340} 1341EXPORT_SYMBOL(security_secmark_relabel_packet); 1342 1343void security_secmark_refcount_inc(void) 1344{ 1345 call_void_hook(secmark_refcount_inc); 1346} 1347EXPORT_SYMBOL(security_secmark_refcount_inc); 1348 1349void security_secmark_refcount_dec(void) 1350{ 1351 call_void_hook(secmark_refcount_dec); 1352} 1353EXPORT_SYMBOL(security_secmark_refcount_dec); 1354 1355int security_tun_dev_alloc_security(void **security) 1356{ 1357 return call_int_hook(tun_dev_alloc_security, 0, security); 1358} 1359EXPORT_SYMBOL(security_tun_dev_alloc_security); 1360 1361void security_tun_dev_free_security(void *security) 1362{ 1363 call_void_hook(tun_dev_free_security, security); 1364} 1365EXPORT_SYMBOL(security_tun_dev_free_security); 1366 1367int security_tun_dev_create(void) 1368{ 1369 return call_int_hook(tun_dev_create, 0); 1370} 1371EXPORT_SYMBOL(security_tun_dev_create); 1372 1373int security_tun_dev_attach_queue(void *security) 1374{ 1375 return call_int_hook(tun_dev_attach_queue, 0, security); 1376} 1377EXPORT_SYMBOL(security_tun_dev_attach_queue); 1378 1379int security_tun_dev_attach(struct sock *sk, void *security) 1380{ 1381 return call_int_hook(tun_dev_attach, 0, sk, security); 1382} 1383EXPORT_SYMBOL(security_tun_dev_attach); 1384 1385int security_tun_dev_open(void *security) 1386{ 1387 return call_int_hook(tun_dev_open, 0, security); 1388} 1389EXPORT_SYMBOL(security_tun_dev_open); 1390 1391#endif /* CONFIG_SECURITY_NETWORK */ 1392 1393#ifdef CONFIG_SECURITY_NETWORK_XFRM 1394 1395int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, 1396 struct xfrm_user_sec_ctx *sec_ctx, 1397 gfp_t gfp) 1398{ 1399 return call_int_hook(xfrm_policy_alloc_security, 0, ctxp, sec_ctx, gfp); 1400} 1401EXPORT_SYMBOL(security_xfrm_policy_alloc); 1402 1403int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, 1404 struct xfrm_sec_ctx **new_ctxp) 1405{ 1406 return call_int_hook(xfrm_policy_clone_security, 0, old_ctx, new_ctxp); 1407} 1408 1409void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1410{ 1411 call_void_hook(xfrm_policy_free_security, ctx); 1412} 1413EXPORT_SYMBOL(security_xfrm_policy_free); 1414 1415int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1416{ 1417 return call_int_hook(xfrm_policy_delete_security, 0, ctx); 1418} 1419 1420int security_xfrm_state_alloc(struct xfrm_state *x, 1421 struct xfrm_user_sec_ctx *sec_ctx) 1422{ 1423 return call_int_hook(xfrm_state_alloc, 0, x, sec_ctx); 1424} 1425EXPORT_SYMBOL(security_xfrm_state_alloc); 1426 1427int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1428 struct xfrm_sec_ctx *polsec, u32 secid) 1429{ 1430 return call_int_hook(xfrm_state_alloc_acquire, 0, x, polsec, secid); 1431} 1432 1433int security_xfrm_state_delete(struct xfrm_state *x) 1434{ 1435 return call_int_hook(xfrm_state_delete_security, 0, x); 1436} 1437EXPORT_SYMBOL(security_xfrm_state_delete); 1438 1439void security_xfrm_state_free(struct xfrm_state *x) 1440{ 1441 call_void_hook(xfrm_state_free_security, x); 1442} 1443 1444int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1445{ 1446 return call_int_hook(xfrm_policy_lookup, 0, ctx, fl_secid, dir); 1447} 1448 1449int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1450 struct xfrm_policy *xp, 1451 const struct flowi *fl) 1452{ 1453 struct security_hook_list *hp; 1454 int rc = 1; 1455 1456 /* 1457 * Since this function is expected to return 0 or 1, the judgment 1458 * becomes difficult if multiple LSMs supply this call. Fortunately, 1459 * we can use the first LSM's judgment because currently only SELinux 1460 * supplies this call. 1461 * 1462 * For speed optimization, we explicitly break the loop rather than 1463 * using the macro 1464 */ 1465 list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match, 1466 list) { 1467 rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl); 1468 break; 1469 } 1470 return rc; 1471} 1472 1473int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1474{ 1475 return call_int_hook(xfrm_decode_session, 0, skb, secid, 1); 1476} 1477 1478void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1479{ 1480 int rc = call_int_hook(xfrm_decode_session, 0, skb, &fl->flowi_secid, 1481 0); 1482 1483 BUG_ON(rc); 1484} 1485EXPORT_SYMBOL(security_skb_classify_flow); 1486 1487#endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1488 1489#ifdef CONFIG_KEYS 1490 1491int security_key_alloc(struct key *key, const struct cred *cred, 1492 unsigned long flags) 1493{ 1494 return call_int_hook(key_alloc, 0, key, cred, flags); 1495} 1496 1497void security_key_free(struct key *key) 1498{ 1499 call_void_hook(key_free, key); 1500} 1501 1502int security_key_permission(key_ref_t key_ref, 1503 const struct cred *cred, unsigned perm) 1504{ 1505 return call_int_hook(key_permission, 0, key_ref, cred, perm); 1506} 1507 1508int security_key_getsecurity(struct key *key, char **_buffer) 1509{ 1510 *_buffer = NULL; 1511 return call_int_hook(key_getsecurity, 0, key, _buffer); 1512} 1513 1514#endif /* CONFIG_KEYS */ 1515 1516#ifdef CONFIG_AUDIT 1517 1518int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) 1519{ 1520 return call_int_hook(audit_rule_init, 0, field, op, rulestr, lsmrule); 1521} 1522 1523int security_audit_rule_known(struct audit_krule *krule) 1524{ 1525 return call_int_hook(audit_rule_known, 0, krule); 1526} 1527 1528void security_audit_rule_free(void *lsmrule) 1529{ 1530 call_void_hook(audit_rule_free, lsmrule); 1531} 1532 1533int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1534 struct audit_context *actx) 1535{ 1536 return call_int_hook(audit_rule_match, 0, secid, field, op, lsmrule, 1537 actx); 1538} 1539#endif /* CONFIG_AUDIT */ 1540 1541struct security_hook_heads security_hook_heads = { 1542 .binder_set_context_mgr = 1543 LIST_HEAD_INIT(security_hook_heads.binder_set_context_mgr), 1544 .binder_transaction = 1545 LIST_HEAD_INIT(security_hook_heads.binder_transaction), 1546 .binder_transfer_binder = 1547 LIST_HEAD_INIT(security_hook_heads.binder_transfer_binder), 1548 .binder_transfer_file = 1549 LIST_HEAD_INIT(security_hook_heads.binder_transfer_file), 1550 1551 .ptrace_access_check = 1552 LIST_HEAD_INIT(security_hook_heads.ptrace_access_check), 1553 .ptrace_traceme = 1554 LIST_HEAD_INIT(security_hook_heads.ptrace_traceme), 1555 .capget = LIST_HEAD_INIT(security_hook_heads.capget), 1556 .capset = LIST_HEAD_INIT(security_hook_heads.capset), 1557 .capable = LIST_HEAD_INIT(security_hook_heads.capable), 1558 .quotactl = LIST_HEAD_INIT(security_hook_heads.quotactl), 1559 .quota_on = LIST_HEAD_INIT(security_hook_heads.quota_on), 1560 .syslog = LIST_HEAD_INIT(security_hook_heads.syslog), 1561 .settime = LIST_HEAD_INIT(security_hook_heads.settime), 1562 .vm_enough_memory = 1563 LIST_HEAD_INIT(security_hook_heads.vm_enough_memory), 1564 .bprm_set_creds = 1565 LIST_HEAD_INIT(security_hook_heads.bprm_set_creds), 1566 .bprm_check_security = 1567 LIST_HEAD_INIT(security_hook_heads.bprm_check_security), 1568 .bprm_secureexec = 1569 LIST_HEAD_INIT(security_hook_heads.bprm_secureexec), 1570 .bprm_committing_creds = 1571 LIST_HEAD_INIT(security_hook_heads.bprm_committing_creds), 1572 .bprm_committed_creds = 1573 LIST_HEAD_INIT(security_hook_heads.bprm_committed_creds), 1574 .sb_alloc_security = 1575 LIST_HEAD_INIT(security_hook_heads.sb_alloc_security), 1576 .sb_free_security = 1577 LIST_HEAD_INIT(security_hook_heads.sb_free_security), 1578 .sb_copy_data = LIST_HEAD_INIT(security_hook_heads.sb_copy_data), 1579 .sb_remount = LIST_HEAD_INIT(security_hook_heads.sb_remount), 1580 .sb_kern_mount = 1581 LIST_HEAD_INIT(security_hook_heads.sb_kern_mount), 1582 .sb_show_options = 1583 LIST_HEAD_INIT(security_hook_heads.sb_show_options), 1584 .sb_statfs = LIST_HEAD_INIT(security_hook_heads.sb_statfs), 1585 .sb_mount = LIST_HEAD_INIT(security_hook_heads.sb_mount), 1586 .sb_umount = LIST_HEAD_INIT(security_hook_heads.sb_umount), 1587 .sb_pivotroot = LIST_HEAD_INIT(security_hook_heads.sb_pivotroot), 1588 .sb_set_mnt_opts = 1589 LIST_HEAD_INIT(security_hook_heads.sb_set_mnt_opts), 1590 .sb_clone_mnt_opts = 1591 LIST_HEAD_INIT(security_hook_heads.sb_clone_mnt_opts), 1592 .sb_parse_opts_str = 1593 LIST_HEAD_INIT(security_hook_heads.sb_parse_opts_str), 1594 .dentry_init_security = 1595 LIST_HEAD_INIT(security_hook_heads.dentry_init_security), 1596#ifdef CONFIG_SECURITY_PATH 1597 .path_unlink = LIST_HEAD_INIT(security_hook_heads.path_unlink), 1598 .path_mkdir = LIST_HEAD_INIT(security_hook_heads.path_mkdir), 1599 .path_rmdir = LIST_HEAD_INIT(security_hook_heads.path_rmdir), 1600 .path_mknod = LIST_HEAD_INIT(security_hook_heads.path_mknod), 1601 .path_truncate = 1602 LIST_HEAD_INIT(security_hook_heads.path_truncate), 1603 .path_symlink = LIST_HEAD_INIT(security_hook_heads.path_symlink), 1604 .path_link = LIST_HEAD_INIT(security_hook_heads.path_link), 1605 .path_rename = LIST_HEAD_INIT(security_hook_heads.path_rename), 1606 .path_chmod = LIST_HEAD_INIT(security_hook_heads.path_chmod), 1607 .path_chown = LIST_HEAD_INIT(security_hook_heads.path_chown), 1608 .path_chroot = LIST_HEAD_INIT(security_hook_heads.path_chroot), 1609#endif 1610 .inode_alloc_security = 1611 LIST_HEAD_INIT(security_hook_heads.inode_alloc_security), 1612 .inode_free_security = 1613 LIST_HEAD_INIT(security_hook_heads.inode_free_security), 1614 .inode_init_security = 1615 LIST_HEAD_INIT(security_hook_heads.inode_init_security), 1616 .inode_create = LIST_HEAD_INIT(security_hook_heads.inode_create), 1617 .inode_link = LIST_HEAD_INIT(security_hook_heads.inode_link), 1618 .inode_unlink = LIST_HEAD_INIT(security_hook_heads.inode_unlink), 1619 .inode_symlink = 1620 LIST_HEAD_INIT(security_hook_heads.inode_symlink), 1621 .inode_mkdir = LIST_HEAD_INIT(security_hook_heads.inode_mkdir), 1622 .inode_rmdir = LIST_HEAD_INIT(security_hook_heads.inode_rmdir), 1623 .inode_mknod = LIST_HEAD_INIT(security_hook_heads.inode_mknod), 1624 .inode_rename = LIST_HEAD_INIT(security_hook_heads.inode_rename), 1625 .inode_readlink = 1626 LIST_HEAD_INIT(security_hook_heads.inode_readlink), 1627 .inode_follow_link = 1628 LIST_HEAD_INIT(security_hook_heads.inode_follow_link), 1629 .inode_permission = 1630 LIST_HEAD_INIT(security_hook_heads.inode_permission), 1631 .inode_setattr = 1632 LIST_HEAD_INIT(security_hook_heads.inode_setattr), 1633 .inode_getattr = 1634 LIST_HEAD_INIT(security_hook_heads.inode_getattr), 1635 .inode_setxattr = 1636 LIST_HEAD_INIT(security_hook_heads.inode_setxattr), 1637 .inode_post_setxattr = 1638 LIST_HEAD_INIT(security_hook_heads.inode_post_setxattr), 1639 .inode_getxattr = 1640 LIST_HEAD_INIT(security_hook_heads.inode_getxattr), 1641 .inode_listxattr = 1642 LIST_HEAD_INIT(security_hook_heads.inode_listxattr), 1643 .inode_removexattr = 1644 LIST_HEAD_INIT(security_hook_heads.inode_removexattr), 1645 .inode_need_killpriv = 1646 LIST_HEAD_INIT(security_hook_heads.inode_need_killpriv), 1647 .inode_killpriv = 1648 LIST_HEAD_INIT(security_hook_heads.inode_killpriv), 1649 .inode_getsecurity = 1650 LIST_HEAD_INIT(security_hook_heads.inode_getsecurity), 1651 .inode_setsecurity = 1652 LIST_HEAD_INIT(security_hook_heads.inode_setsecurity), 1653 .inode_listsecurity = 1654 LIST_HEAD_INIT(security_hook_heads.inode_listsecurity), 1655 .inode_getsecid = 1656 LIST_HEAD_INIT(security_hook_heads.inode_getsecid), 1657 .file_permission = 1658 LIST_HEAD_INIT(security_hook_heads.file_permission), 1659 .file_alloc_security = 1660 LIST_HEAD_INIT(security_hook_heads.file_alloc_security), 1661 .file_free_security = 1662 LIST_HEAD_INIT(security_hook_heads.file_free_security), 1663 .file_ioctl = LIST_HEAD_INIT(security_hook_heads.file_ioctl), 1664 .mmap_addr = LIST_HEAD_INIT(security_hook_heads.mmap_addr), 1665 .mmap_file = LIST_HEAD_INIT(security_hook_heads.mmap_file), 1666 .file_mprotect = 1667 LIST_HEAD_INIT(security_hook_heads.file_mprotect), 1668 .file_lock = LIST_HEAD_INIT(security_hook_heads.file_lock), 1669 .file_fcntl = LIST_HEAD_INIT(security_hook_heads.file_fcntl), 1670 .file_set_fowner = 1671 LIST_HEAD_INIT(security_hook_heads.file_set_fowner), 1672 .file_send_sigiotask = 1673 LIST_HEAD_INIT(security_hook_heads.file_send_sigiotask), 1674 .file_receive = LIST_HEAD_INIT(security_hook_heads.file_receive), 1675 .file_open = LIST_HEAD_INIT(security_hook_heads.file_open), 1676 .task_create = LIST_HEAD_INIT(security_hook_heads.task_create), 1677 .task_free = LIST_HEAD_INIT(security_hook_heads.task_free), 1678 .cred_alloc_blank = 1679 LIST_HEAD_INIT(security_hook_heads.cred_alloc_blank), 1680 .cred_free = LIST_HEAD_INIT(security_hook_heads.cred_free), 1681 .cred_prepare = LIST_HEAD_INIT(security_hook_heads.cred_prepare), 1682 .cred_transfer = 1683 LIST_HEAD_INIT(security_hook_heads.cred_transfer), 1684 .kernel_act_as = 1685 LIST_HEAD_INIT(security_hook_heads.kernel_act_as), 1686 .kernel_create_files_as = 1687 LIST_HEAD_INIT(security_hook_heads.kernel_create_files_as), 1688 .kernel_fw_from_file = 1689 LIST_HEAD_INIT(security_hook_heads.kernel_fw_from_file), 1690 .kernel_module_request = 1691 LIST_HEAD_INIT(security_hook_heads.kernel_module_request), 1692 .kernel_module_from_file = 1693 LIST_HEAD_INIT(security_hook_heads.kernel_module_from_file), 1694 .task_fix_setuid = 1695 LIST_HEAD_INIT(security_hook_heads.task_fix_setuid), 1696 .task_setpgid = LIST_HEAD_INIT(security_hook_heads.task_setpgid), 1697 .task_getpgid = LIST_HEAD_INIT(security_hook_heads.task_getpgid), 1698 .task_getsid = LIST_HEAD_INIT(security_hook_heads.task_getsid), 1699 .task_getsecid = 1700 LIST_HEAD_INIT(security_hook_heads.task_getsecid), 1701 .task_setnice = LIST_HEAD_INIT(security_hook_heads.task_setnice), 1702 .task_setioprio = 1703 LIST_HEAD_INIT(security_hook_heads.task_setioprio), 1704 .task_getioprio = 1705 LIST_HEAD_INIT(security_hook_heads.task_getioprio), 1706 .task_setrlimit = 1707 LIST_HEAD_INIT(security_hook_heads.task_setrlimit), 1708 .task_setscheduler = 1709 LIST_HEAD_INIT(security_hook_heads.task_setscheduler), 1710 .task_getscheduler = 1711 LIST_HEAD_INIT(security_hook_heads.task_getscheduler), 1712 .task_movememory = 1713 LIST_HEAD_INIT(security_hook_heads.task_movememory), 1714 .task_kill = LIST_HEAD_INIT(security_hook_heads.task_kill), 1715 .task_wait = LIST_HEAD_INIT(security_hook_heads.task_wait), 1716 .task_prctl = LIST_HEAD_INIT(security_hook_heads.task_prctl), 1717 .task_to_inode = 1718 LIST_HEAD_INIT(security_hook_heads.task_to_inode), 1719 .ipc_permission = 1720 LIST_HEAD_INIT(security_hook_heads.ipc_permission), 1721 .ipc_getsecid = LIST_HEAD_INIT(security_hook_heads.ipc_getsecid), 1722 .msg_msg_alloc_security = 1723 LIST_HEAD_INIT(security_hook_heads.msg_msg_alloc_security), 1724 .msg_msg_free_security = 1725 LIST_HEAD_INIT(security_hook_heads.msg_msg_free_security), 1726 .msg_queue_alloc_security = 1727 LIST_HEAD_INIT(security_hook_heads.msg_queue_alloc_security), 1728 .msg_queue_free_security = 1729 LIST_HEAD_INIT(security_hook_heads.msg_queue_free_security), 1730 .msg_queue_associate = 1731 LIST_HEAD_INIT(security_hook_heads.msg_queue_associate), 1732 .msg_queue_msgctl = 1733 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgctl), 1734 .msg_queue_msgsnd = 1735 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgsnd), 1736 .msg_queue_msgrcv = 1737 LIST_HEAD_INIT(security_hook_heads.msg_queue_msgrcv), 1738 .shm_alloc_security = 1739 LIST_HEAD_INIT(security_hook_heads.shm_alloc_security), 1740 .shm_free_security = 1741 LIST_HEAD_INIT(security_hook_heads.shm_free_security), 1742 .shm_associate = 1743 LIST_HEAD_INIT(security_hook_heads.shm_associate), 1744 .shm_shmctl = LIST_HEAD_INIT(security_hook_heads.shm_shmctl), 1745 .shm_shmat = LIST_HEAD_INIT(security_hook_heads.shm_shmat), 1746 .sem_alloc_security = 1747 LIST_HEAD_INIT(security_hook_heads.sem_alloc_security), 1748 .sem_free_security = 1749 LIST_HEAD_INIT(security_hook_heads.sem_free_security), 1750 .sem_associate = 1751 LIST_HEAD_INIT(security_hook_heads.sem_associate), 1752 .sem_semctl = LIST_HEAD_INIT(security_hook_heads.sem_semctl), 1753 .sem_semop = LIST_HEAD_INIT(security_hook_heads.sem_semop), 1754 .netlink_send = LIST_HEAD_INIT(security_hook_heads.netlink_send), 1755 .d_instantiate = 1756 LIST_HEAD_INIT(security_hook_heads.d_instantiate), 1757 .getprocattr = LIST_HEAD_INIT(security_hook_heads.getprocattr), 1758 .setprocattr = LIST_HEAD_INIT(security_hook_heads.setprocattr), 1759 .ismaclabel = LIST_HEAD_INIT(security_hook_heads.ismaclabel), 1760 .secid_to_secctx = 1761 LIST_HEAD_INIT(security_hook_heads.secid_to_secctx), 1762 .secctx_to_secid = 1763 LIST_HEAD_INIT(security_hook_heads.secctx_to_secid), 1764 .release_secctx = 1765 LIST_HEAD_INIT(security_hook_heads.release_secctx), 1766 .inode_notifysecctx = 1767 LIST_HEAD_INIT(security_hook_heads.inode_notifysecctx), 1768 .inode_setsecctx = 1769 LIST_HEAD_INIT(security_hook_heads.inode_setsecctx), 1770 .inode_getsecctx = 1771 LIST_HEAD_INIT(security_hook_heads.inode_getsecctx), 1772#ifdef CONFIG_SECURITY_NETWORK 1773 .unix_stream_connect = 1774 LIST_HEAD_INIT(security_hook_heads.unix_stream_connect), 1775 .unix_may_send = 1776 LIST_HEAD_INIT(security_hook_heads.unix_may_send), 1777 .socket_create = 1778 LIST_HEAD_INIT(security_hook_heads.socket_create), 1779 .socket_post_create = 1780 LIST_HEAD_INIT(security_hook_heads.socket_post_create), 1781 .socket_bind = LIST_HEAD_INIT(security_hook_heads.socket_bind), 1782 .socket_connect = 1783 LIST_HEAD_INIT(security_hook_heads.socket_connect), 1784 .socket_listen = 1785 LIST_HEAD_INIT(security_hook_heads.socket_listen), 1786 .socket_accept = 1787 LIST_HEAD_INIT(security_hook_heads.socket_accept), 1788 .socket_sendmsg = 1789 LIST_HEAD_INIT(security_hook_heads.socket_sendmsg), 1790 .socket_recvmsg = 1791 LIST_HEAD_INIT(security_hook_heads.socket_recvmsg), 1792 .socket_getsockname = 1793 LIST_HEAD_INIT(security_hook_heads.socket_getsockname), 1794 .socket_getpeername = 1795 LIST_HEAD_INIT(security_hook_heads.socket_getpeername), 1796 .socket_getsockopt = 1797 LIST_HEAD_INIT(security_hook_heads.socket_getsockopt), 1798 .socket_setsockopt = 1799 LIST_HEAD_INIT(security_hook_heads.socket_setsockopt), 1800 .socket_shutdown = 1801 LIST_HEAD_INIT(security_hook_heads.socket_shutdown), 1802 .socket_sock_rcv_skb = 1803 LIST_HEAD_INIT(security_hook_heads.socket_sock_rcv_skb), 1804 .socket_getpeersec_stream = 1805 LIST_HEAD_INIT(security_hook_heads.socket_getpeersec_stream), 1806 .socket_getpeersec_dgram = 1807 LIST_HEAD_INIT(security_hook_heads.socket_getpeersec_dgram), 1808 .sk_alloc_security = 1809 LIST_HEAD_INIT(security_hook_heads.sk_alloc_security), 1810 .sk_free_security = 1811 LIST_HEAD_INIT(security_hook_heads.sk_free_security), 1812 .sk_clone_security = 1813 LIST_HEAD_INIT(security_hook_heads.sk_clone_security), 1814 .sk_getsecid = LIST_HEAD_INIT(security_hook_heads.sk_getsecid), 1815 .sock_graft = LIST_HEAD_INIT(security_hook_heads.sock_graft), 1816 .inet_conn_request = 1817 LIST_HEAD_INIT(security_hook_heads.inet_conn_request), 1818 .inet_csk_clone = 1819 LIST_HEAD_INIT(security_hook_heads.inet_csk_clone), 1820 .inet_conn_established = 1821 LIST_HEAD_INIT(security_hook_heads.inet_conn_established), 1822 .secmark_relabel_packet = 1823 LIST_HEAD_INIT(security_hook_heads.secmark_relabel_packet), 1824 .secmark_refcount_inc = 1825 LIST_HEAD_INIT(security_hook_heads.secmark_refcount_inc), 1826 .secmark_refcount_dec = 1827 LIST_HEAD_INIT(security_hook_heads.secmark_refcount_dec), 1828 .req_classify_flow = 1829 LIST_HEAD_INIT(security_hook_heads.req_classify_flow), 1830 .tun_dev_alloc_security = 1831 LIST_HEAD_INIT(security_hook_heads.tun_dev_alloc_security), 1832 .tun_dev_free_security = 1833 LIST_HEAD_INIT(security_hook_heads.tun_dev_free_security), 1834 .tun_dev_create = 1835 LIST_HEAD_INIT(security_hook_heads.tun_dev_create), 1836 .tun_dev_attach_queue = 1837 LIST_HEAD_INIT(security_hook_heads.tun_dev_attach_queue), 1838 .tun_dev_attach = 1839 LIST_HEAD_INIT(security_hook_heads.tun_dev_attach), 1840 .tun_dev_open = LIST_HEAD_INIT(security_hook_heads.tun_dev_open), 1841 .skb_owned_by = LIST_HEAD_INIT(security_hook_heads.skb_owned_by), 1842#endif /* CONFIG_SECURITY_NETWORK */ 1843#ifdef CONFIG_SECURITY_NETWORK_XFRM 1844 .xfrm_policy_alloc_security = 1845 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_alloc_security), 1846 .xfrm_policy_clone_security = 1847 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_clone_security), 1848 .xfrm_policy_free_security = 1849 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_free_security), 1850 .xfrm_policy_delete_security = 1851 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_delete_security), 1852 .xfrm_state_alloc = 1853 LIST_HEAD_INIT(security_hook_heads.xfrm_state_alloc), 1854 .xfrm_state_alloc_acquire = 1855 LIST_HEAD_INIT(security_hook_heads.xfrm_state_alloc_acquire), 1856 .xfrm_state_free_security = 1857 LIST_HEAD_INIT(security_hook_heads.xfrm_state_free_security), 1858 .xfrm_state_delete_security = 1859 LIST_HEAD_INIT(security_hook_heads.xfrm_state_delete_security), 1860 .xfrm_policy_lookup = 1861 LIST_HEAD_INIT(security_hook_heads.xfrm_policy_lookup), 1862 .xfrm_state_pol_flow_match = 1863 LIST_HEAD_INIT(security_hook_heads.xfrm_state_pol_flow_match), 1864 .xfrm_decode_session = 1865 LIST_HEAD_INIT(security_hook_heads.xfrm_decode_session), 1866#endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1867#ifdef CONFIG_KEYS 1868 .key_alloc = LIST_HEAD_INIT(security_hook_heads.key_alloc), 1869 .key_free = LIST_HEAD_INIT(security_hook_heads.key_free), 1870 .key_permission = 1871 LIST_HEAD_INIT(security_hook_heads.key_permission), 1872 .key_getsecurity = 1873 LIST_HEAD_INIT(security_hook_heads.key_getsecurity), 1874#endif /* CONFIG_KEYS */ 1875#ifdef CONFIG_AUDIT 1876 .audit_rule_init = 1877 LIST_HEAD_INIT(security_hook_heads.audit_rule_init), 1878 .audit_rule_known = 1879 LIST_HEAD_INIT(security_hook_heads.audit_rule_known), 1880 .audit_rule_match = 1881 LIST_HEAD_INIT(security_hook_heads.audit_rule_match), 1882 .audit_rule_free = 1883 LIST_HEAD_INIT(security_hook_heads.audit_rule_free), 1884#endif /* CONFIG_AUDIT */ 1885}; 1886