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/module.h> 16 #include <linux/init.h> 17 #include <linux/kernel.h> 18 #include <linux/security.h> 19 #include <linux/integrity.h> 20 #include <linux/ima.h> 21 #include <linux/evm.h> 22 23 #define MAX_LSM_EVM_XATTR 2 24 25 /* Boot-time LSM user choice */ 26 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] = 27 CONFIG_DEFAULT_SECURITY; 28 29 static struct security_operations *security_ops; 30 static struct security_operations default_security_ops = { 31 .name = "default", 32 }; 33 34 static inline int __init verify(struct security_operations *ops) 35 { 36 /* verify the security_operations structure exists */ 37 if (!ops) 38 return -EINVAL; 39 security_fixup_ops(ops); 40 return 0; 41 } 42 43 static void __init do_security_initcalls(void) 44 { 45 initcall_t *call; 46 call = __security_initcall_start; 47 while (call < __security_initcall_end) { 48 (*call) (); 49 call++; 50 } 51 } 52 53 /** 54 * security_init - initializes the security framework 55 * 56 * This should be called early in the kernel initialization sequence. 57 */ 58 int __init security_init(void) 59 { 60 printk(KERN_INFO "Security Framework initialized\n"); 61 62 security_fixup_ops(&default_security_ops); 63 security_ops = &default_security_ops; 64 do_security_initcalls(); 65 66 return 0; 67 } 68 69 void reset_security_ops(void) 70 { 71 security_ops = &default_security_ops; 72 } 73 74 /* Save user chosen LSM */ 75 static int __init choose_lsm(char *str) 76 { 77 strncpy(chosen_lsm, str, SECURITY_NAME_MAX); 78 return 1; 79 } 80 __setup("security=", choose_lsm); 81 82 /** 83 * security_module_enable - Load given security module on boot ? 84 * @ops: a pointer to the struct security_operations that is to be checked. 85 * 86 * Each LSM must pass this method before registering its own operations 87 * to avoid security registration races. This method may also be used 88 * to check if your LSM is currently loaded during kernel initialization. 89 * 90 * Return true if: 91 * -The passed LSM is the one chosen by user at boot time, 92 * -or the passed LSM is configured as the default and the user did not 93 * choose an alternate LSM at boot time. 94 * Otherwise, return false. 95 */ 96 int __init security_module_enable(struct security_operations *ops) 97 { 98 return !strcmp(ops->name, chosen_lsm); 99 } 100 101 /** 102 * register_security - registers a security framework with the kernel 103 * @ops: a pointer to the struct security_options that is to be registered 104 * 105 * This function allows a security module to register itself with the 106 * kernel security subsystem. Some rudimentary checking is done on the @ops 107 * value passed to this function. You'll need to check first if your LSM 108 * is allowed to register its @ops by calling security_module_enable(@ops). 109 * 110 * If there is already a security module registered with the kernel, 111 * an error will be returned. Otherwise %0 is returned on success. 112 */ 113 int __init register_security(struct security_operations *ops) 114 { 115 if (verify(ops)) { 116 printk(KERN_DEBUG "%s could not verify " 117 "security_operations structure.\n", __func__); 118 return -EINVAL; 119 } 120 121 if (security_ops != &default_security_ops) 122 return -EAGAIN; 123 124 security_ops = ops; 125 126 return 0; 127 } 128 129 /* Security operations */ 130 131 int security_ptrace_access_check(struct task_struct *child, unsigned int mode) 132 { 133 return security_ops->ptrace_access_check(child, mode); 134 } 135 136 int security_ptrace_traceme(struct task_struct *parent) 137 { 138 return security_ops->ptrace_traceme(parent); 139 } 140 141 int security_capget(struct task_struct *target, 142 kernel_cap_t *effective, 143 kernel_cap_t *inheritable, 144 kernel_cap_t *permitted) 145 { 146 return security_ops->capget(target, effective, inheritable, permitted); 147 } 148 149 int security_capset(struct cred *new, const struct cred *old, 150 const kernel_cap_t *effective, 151 const kernel_cap_t *inheritable, 152 const kernel_cap_t *permitted) 153 { 154 return security_ops->capset(new, old, 155 effective, inheritable, permitted); 156 } 157 158 int security_capable(const struct cred *cred, struct user_namespace *ns, 159 int cap) 160 { 161 return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT); 162 } 163 164 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 165 int cap) 166 { 167 return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 168 } 169 170 int security_quotactl(int cmds, int type, int id, struct super_block *sb) 171 { 172 return security_ops->quotactl(cmds, type, id, sb); 173 } 174 175 int security_quota_on(struct dentry *dentry) 176 { 177 return security_ops->quota_on(dentry); 178 } 179 180 int security_syslog(int type) 181 { 182 return security_ops->syslog(type); 183 } 184 185 int security_settime(const struct timespec *ts, const struct timezone *tz) 186 { 187 return security_ops->settime(ts, tz); 188 } 189 190 int security_vm_enough_memory(long pages) 191 { 192 WARN_ON(current->mm == NULL); 193 return security_ops->vm_enough_memory(current->mm, pages); 194 } 195 196 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 197 { 198 WARN_ON(mm == NULL); 199 return security_ops->vm_enough_memory(mm, pages); 200 } 201 202 int security_vm_enough_memory_kern(long pages) 203 { 204 /* If current->mm is a kernel thread then we will pass NULL, 205 for this specific case that is fine */ 206 return security_ops->vm_enough_memory(current->mm, pages); 207 } 208 209 int security_bprm_set_creds(struct linux_binprm *bprm) 210 { 211 return security_ops->bprm_set_creds(bprm); 212 } 213 214 int security_bprm_check(struct linux_binprm *bprm) 215 { 216 int ret; 217 218 ret = security_ops->bprm_check_security(bprm); 219 if (ret) 220 return ret; 221 return ima_bprm_check(bprm); 222 } 223 224 void security_bprm_committing_creds(struct linux_binprm *bprm) 225 { 226 security_ops->bprm_committing_creds(bprm); 227 } 228 229 void security_bprm_committed_creds(struct linux_binprm *bprm) 230 { 231 security_ops->bprm_committed_creds(bprm); 232 } 233 234 int security_bprm_secureexec(struct linux_binprm *bprm) 235 { 236 return security_ops->bprm_secureexec(bprm); 237 } 238 239 int security_sb_alloc(struct super_block *sb) 240 { 241 return security_ops->sb_alloc_security(sb); 242 } 243 244 void security_sb_free(struct super_block *sb) 245 { 246 security_ops->sb_free_security(sb); 247 } 248 249 int security_sb_copy_data(char *orig, char *copy) 250 { 251 return security_ops->sb_copy_data(orig, copy); 252 } 253 EXPORT_SYMBOL(security_sb_copy_data); 254 255 int security_sb_remount(struct super_block *sb, void *data) 256 { 257 return security_ops->sb_remount(sb, data); 258 } 259 260 int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 261 { 262 return security_ops->sb_kern_mount(sb, flags, data); 263 } 264 265 int security_sb_show_options(struct seq_file *m, struct super_block *sb) 266 { 267 return security_ops->sb_show_options(m, sb); 268 } 269 270 int security_sb_statfs(struct dentry *dentry) 271 { 272 return security_ops->sb_statfs(dentry); 273 } 274 275 int security_sb_mount(char *dev_name, struct path *path, 276 char *type, unsigned long flags, void *data) 277 { 278 return security_ops->sb_mount(dev_name, path, type, flags, data); 279 } 280 281 int security_sb_umount(struct vfsmount *mnt, int flags) 282 { 283 return security_ops->sb_umount(mnt, flags); 284 } 285 286 int security_sb_pivotroot(struct path *old_path, struct path *new_path) 287 { 288 return security_ops->sb_pivotroot(old_path, new_path); 289 } 290 291 int security_sb_set_mnt_opts(struct super_block *sb, 292 struct security_mnt_opts *opts) 293 { 294 return security_ops->sb_set_mnt_opts(sb, opts); 295 } 296 EXPORT_SYMBOL(security_sb_set_mnt_opts); 297 298 void security_sb_clone_mnt_opts(const struct super_block *oldsb, 299 struct super_block *newsb) 300 { 301 security_ops->sb_clone_mnt_opts(oldsb, newsb); 302 } 303 EXPORT_SYMBOL(security_sb_clone_mnt_opts); 304 305 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 306 { 307 return security_ops->sb_parse_opts_str(options, opts); 308 } 309 EXPORT_SYMBOL(security_sb_parse_opts_str); 310 311 int security_inode_alloc(struct inode *inode) 312 { 313 inode->i_security = NULL; 314 return security_ops->inode_alloc_security(inode); 315 } 316 317 void security_inode_free(struct inode *inode) 318 { 319 integrity_inode_free(inode); 320 security_ops->inode_free_security(inode); 321 } 322 323 int security_inode_init_security(struct inode *inode, struct inode *dir, 324 const struct qstr *qstr, 325 const initxattrs initxattrs, void *fs_data) 326 { 327 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; 328 struct xattr *lsm_xattr, *evm_xattr, *xattr; 329 int ret; 330 331 if (unlikely(IS_PRIVATE(inode))) 332 return 0; 333 334 memset(new_xattrs, 0, sizeof new_xattrs); 335 if (!initxattrs) 336 return security_ops->inode_init_security(inode, dir, qstr, 337 NULL, NULL, NULL); 338 lsm_xattr = new_xattrs; 339 ret = security_ops->inode_init_security(inode, dir, qstr, 340 &lsm_xattr->name, 341 &lsm_xattr->value, 342 &lsm_xattr->value_len); 343 if (ret) 344 goto out; 345 346 evm_xattr = lsm_xattr + 1; 347 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); 348 if (ret) 349 goto out; 350 ret = initxattrs(inode, new_xattrs, fs_data); 351 out: 352 for (xattr = new_xattrs; xattr->name != NULL; xattr++) { 353 kfree(xattr->name); 354 kfree(xattr->value); 355 } 356 return (ret == -EOPNOTSUPP) ? 0 : ret; 357 } 358 EXPORT_SYMBOL(security_inode_init_security); 359 360 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 361 const struct qstr *qstr, char **name, 362 void **value, size_t *len) 363 { 364 if (unlikely(IS_PRIVATE(inode))) 365 return -EOPNOTSUPP; 366 return security_ops->inode_init_security(inode, dir, qstr, name, value, 367 len); 368 } 369 EXPORT_SYMBOL(security_old_inode_init_security); 370 371 #ifdef CONFIG_SECURITY_PATH 372 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode, 373 unsigned int dev) 374 { 375 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 376 return 0; 377 return security_ops->path_mknod(dir, dentry, mode, dev); 378 } 379 EXPORT_SYMBOL(security_path_mknod); 380 381 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode) 382 { 383 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 384 return 0; 385 return security_ops->path_mkdir(dir, dentry, mode); 386 } 387 EXPORT_SYMBOL(security_path_mkdir); 388 389 int security_path_rmdir(struct path *dir, struct dentry *dentry) 390 { 391 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 392 return 0; 393 return security_ops->path_rmdir(dir, dentry); 394 } 395 396 int security_path_unlink(struct path *dir, struct dentry *dentry) 397 { 398 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 399 return 0; 400 return security_ops->path_unlink(dir, dentry); 401 } 402 EXPORT_SYMBOL(security_path_unlink); 403 404 int security_path_symlink(struct path *dir, struct dentry *dentry, 405 const char *old_name) 406 { 407 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 408 return 0; 409 return security_ops->path_symlink(dir, dentry, old_name); 410 } 411 412 int security_path_link(struct dentry *old_dentry, struct path *new_dir, 413 struct dentry *new_dentry) 414 { 415 if (unlikely(IS_PRIVATE(old_dentry->d_inode))) 416 return 0; 417 return security_ops->path_link(old_dentry, new_dir, new_dentry); 418 } 419 420 int security_path_rename(struct path *old_dir, struct dentry *old_dentry, 421 struct path *new_dir, struct dentry *new_dentry) 422 { 423 if (unlikely(IS_PRIVATE(old_dentry->d_inode) || 424 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) 425 return 0; 426 return security_ops->path_rename(old_dir, old_dentry, new_dir, 427 new_dentry); 428 } 429 EXPORT_SYMBOL(security_path_rename); 430 431 int security_path_truncate(struct path *path) 432 { 433 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 434 return 0; 435 return security_ops->path_truncate(path); 436 } 437 438 int security_path_chmod(struct path *path, umode_t mode) 439 { 440 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 441 return 0; 442 return security_ops->path_chmod(path, mode); 443 } 444 445 int security_path_chown(struct path *path, uid_t uid, gid_t gid) 446 { 447 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 448 return 0; 449 return security_ops->path_chown(path, uid, gid); 450 } 451 452 int security_path_chroot(struct path *path) 453 { 454 return security_ops->path_chroot(path); 455 } 456 #endif 457 458 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) 459 { 460 if (unlikely(IS_PRIVATE(dir))) 461 return 0; 462 return security_ops->inode_create(dir, dentry, mode); 463 } 464 EXPORT_SYMBOL_GPL(security_inode_create); 465 466 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 467 struct dentry *new_dentry) 468 { 469 if (unlikely(IS_PRIVATE(old_dentry->d_inode))) 470 return 0; 471 return security_ops->inode_link(old_dentry, dir, new_dentry); 472 } 473 474 int security_inode_unlink(struct inode *dir, struct dentry *dentry) 475 { 476 if (unlikely(IS_PRIVATE(dentry->d_inode))) 477 return 0; 478 return security_ops->inode_unlink(dir, dentry); 479 } 480 481 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 482 const char *old_name) 483 { 484 if (unlikely(IS_PRIVATE(dir))) 485 return 0; 486 return security_ops->inode_symlink(dir, dentry, old_name); 487 } 488 489 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 490 { 491 if (unlikely(IS_PRIVATE(dir))) 492 return 0; 493 return security_ops->inode_mkdir(dir, dentry, mode); 494 } 495 EXPORT_SYMBOL_GPL(security_inode_mkdir); 496 497 int security_inode_rmdir(struct inode *dir, struct dentry *dentry) 498 { 499 if (unlikely(IS_PRIVATE(dentry->d_inode))) 500 return 0; 501 return security_ops->inode_rmdir(dir, dentry); 502 } 503 504 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) 505 { 506 if (unlikely(IS_PRIVATE(dir))) 507 return 0; 508 return security_ops->inode_mknod(dir, dentry, mode, dev); 509 } 510 511 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 512 struct inode *new_dir, struct dentry *new_dentry) 513 { 514 if (unlikely(IS_PRIVATE(old_dentry->d_inode) || 515 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) 516 return 0; 517 return security_ops->inode_rename(old_dir, old_dentry, 518 new_dir, new_dentry); 519 } 520 521 int security_inode_readlink(struct dentry *dentry) 522 { 523 if (unlikely(IS_PRIVATE(dentry->d_inode))) 524 return 0; 525 return security_ops->inode_readlink(dentry); 526 } 527 528 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd) 529 { 530 if (unlikely(IS_PRIVATE(dentry->d_inode))) 531 return 0; 532 return security_ops->inode_follow_link(dentry, nd); 533 } 534 535 int security_inode_permission(struct inode *inode, int mask) 536 { 537 if (unlikely(IS_PRIVATE(inode))) 538 return 0; 539 return security_ops->inode_permission(inode, mask); 540 } 541 542 int security_inode_setattr(struct dentry *dentry, struct iattr *attr) 543 { 544 int ret; 545 546 if (unlikely(IS_PRIVATE(dentry->d_inode))) 547 return 0; 548 ret = security_ops->inode_setattr(dentry, attr); 549 if (ret) 550 return ret; 551 return evm_inode_setattr(dentry, attr); 552 } 553 EXPORT_SYMBOL_GPL(security_inode_setattr); 554 555 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry) 556 { 557 if (unlikely(IS_PRIVATE(dentry->d_inode))) 558 return 0; 559 return security_ops->inode_getattr(mnt, dentry); 560 } 561 562 int security_inode_setxattr(struct dentry *dentry, const char *name, 563 const void *value, size_t size, int flags) 564 { 565 int ret; 566 567 if (unlikely(IS_PRIVATE(dentry->d_inode))) 568 return 0; 569 ret = security_ops->inode_setxattr(dentry, name, value, size, flags); 570 if (ret) 571 return ret; 572 return evm_inode_setxattr(dentry, name, value, size); 573 } 574 575 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 576 const void *value, size_t size, int flags) 577 { 578 if (unlikely(IS_PRIVATE(dentry->d_inode))) 579 return; 580 security_ops->inode_post_setxattr(dentry, name, value, size, flags); 581 evm_inode_post_setxattr(dentry, name, value, size); 582 } 583 584 int security_inode_getxattr(struct dentry *dentry, const char *name) 585 { 586 if (unlikely(IS_PRIVATE(dentry->d_inode))) 587 return 0; 588 return security_ops->inode_getxattr(dentry, name); 589 } 590 591 int security_inode_listxattr(struct dentry *dentry) 592 { 593 if (unlikely(IS_PRIVATE(dentry->d_inode))) 594 return 0; 595 return security_ops->inode_listxattr(dentry); 596 } 597 598 int security_inode_removexattr(struct dentry *dentry, const char *name) 599 { 600 int ret; 601 602 if (unlikely(IS_PRIVATE(dentry->d_inode))) 603 return 0; 604 ret = security_ops->inode_removexattr(dentry, name); 605 if (ret) 606 return ret; 607 return evm_inode_removexattr(dentry, name); 608 } 609 610 int security_inode_need_killpriv(struct dentry *dentry) 611 { 612 return security_ops->inode_need_killpriv(dentry); 613 } 614 615 int security_inode_killpriv(struct dentry *dentry) 616 { 617 return security_ops->inode_killpriv(dentry); 618 } 619 620 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc) 621 { 622 if (unlikely(IS_PRIVATE(inode))) 623 return -EOPNOTSUPP; 624 return security_ops->inode_getsecurity(inode, name, buffer, alloc); 625 } 626 627 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 628 { 629 if (unlikely(IS_PRIVATE(inode))) 630 return -EOPNOTSUPP; 631 return security_ops->inode_setsecurity(inode, name, value, size, flags); 632 } 633 634 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 635 { 636 if (unlikely(IS_PRIVATE(inode))) 637 return 0; 638 return security_ops->inode_listsecurity(inode, buffer, buffer_size); 639 } 640 641 void security_inode_getsecid(const struct inode *inode, u32 *secid) 642 { 643 security_ops->inode_getsecid(inode, secid); 644 } 645 646 int security_file_permission(struct file *file, int mask) 647 { 648 int ret; 649 650 ret = security_ops->file_permission(file, mask); 651 if (ret) 652 return ret; 653 654 return fsnotify_perm(file, mask); 655 } 656 657 int security_file_alloc(struct file *file) 658 { 659 return security_ops->file_alloc_security(file); 660 } 661 662 void security_file_free(struct file *file) 663 { 664 security_ops->file_free_security(file); 665 } 666 667 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 668 { 669 return security_ops->file_ioctl(file, cmd, arg); 670 } 671 672 int security_file_mmap(struct file *file, unsigned long reqprot, 673 unsigned long prot, unsigned long flags, 674 unsigned long addr, unsigned long addr_only) 675 { 676 int ret; 677 678 ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only); 679 if (ret) 680 return ret; 681 return ima_file_mmap(file, prot); 682 } 683 684 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 685 unsigned long prot) 686 { 687 return security_ops->file_mprotect(vma, reqprot, prot); 688 } 689 690 int security_file_lock(struct file *file, unsigned int cmd) 691 { 692 return security_ops->file_lock(file, cmd); 693 } 694 695 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) 696 { 697 return security_ops->file_fcntl(file, cmd, arg); 698 } 699 700 int security_file_set_fowner(struct file *file) 701 { 702 return security_ops->file_set_fowner(file); 703 } 704 705 int security_file_send_sigiotask(struct task_struct *tsk, 706 struct fown_struct *fown, int sig) 707 { 708 return security_ops->file_send_sigiotask(tsk, fown, sig); 709 } 710 711 int security_file_receive(struct file *file) 712 { 713 return security_ops->file_receive(file); 714 } 715 716 int security_dentry_open(struct file *file, const struct cred *cred) 717 { 718 int ret; 719 720 ret = security_ops->dentry_open(file, cred); 721 if (ret) 722 return ret; 723 724 return fsnotify_perm(file, MAY_OPEN); 725 } 726 727 int security_task_create(unsigned long clone_flags) 728 { 729 return security_ops->task_create(clone_flags); 730 } 731 732 void security_task_free(struct task_struct *task) 733 { 734 security_ops->task_free(task); 735 } 736 737 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 738 { 739 return security_ops->cred_alloc_blank(cred, gfp); 740 } 741 742 void security_cred_free(struct cred *cred) 743 { 744 security_ops->cred_free(cred); 745 } 746 747 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) 748 { 749 return security_ops->cred_prepare(new, old, gfp); 750 } 751 752 void security_transfer_creds(struct cred *new, const struct cred *old) 753 { 754 security_ops->cred_transfer(new, old); 755 } 756 757 int security_kernel_act_as(struct cred *new, u32 secid) 758 { 759 return security_ops->kernel_act_as(new, secid); 760 } 761 762 int security_kernel_create_files_as(struct cred *new, struct inode *inode) 763 { 764 return security_ops->kernel_create_files_as(new, inode); 765 } 766 767 int security_kernel_module_request(char *kmod_name) 768 { 769 return security_ops->kernel_module_request(kmod_name); 770 } 771 772 int security_task_fix_setuid(struct cred *new, const struct cred *old, 773 int flags) 774 { 775 return security_ops->task_fix_setuid(new, old, flags); 776 } 777 778 int security_task_setpgid(struct task_struct *p, pid_t pgid) 779 { 780 return security_ops->task_setpgid(p, pgid); 781 } 782 783 int security_task_getpgid(struct task_struct *p) 784 { 785 return security_ops->task_getpgid(p); 786 } 787 788 int security_task_getsid(struct task_struct *p) 789 { 790 return security_ops->task_getsid(p); 791 } 792 793 void security_task_getsecid(struct task_struct *p, u32 *secid) 794 { 795 security_ops->task_getsecid(p, secid); 796 } 797 EXPORT_SYMBOL(security_task_getsecid); 798 799 int security_task_setnice(struct task_struct *p, int nice) 800 { 801 return security_ops->task_setnice(p, nice); 802 } 803 804 int security_task_setioprio(struct task_struct *p, int ioprio) 805 { 806 return security_ops->task_setioprio(p, ioprio); 807 } 808 809 int security_task_getioprio(struct task_struct *p) 810 { 811 return security_ops->task_getioprio(p); 812 } 813 814 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 815 struct rlimit *new_rlim) 816 { 817 return security_ops->task_setrlimit(p, resource, new_rlim); 818 } 819 820 int security_task_setscheduler(struct task_struct *p) 821 { 822 return security_ops->task_setscheduler(p); 823 } 824 825 int security_task_getscheduler(struct task_struct *p) 826 { 827 return security_ops->task_getscheduler(p); 828 } 829 830 int security_task_movememory(struct task_struct *p) 831 { 832 return security_ops->task_movememory(p); 833 } 834 835 int security_task_kill(struct task_struct *p, struct siginfo *info, 836 int sig, u32 secid) 837 { 838 return security_ops->task_kill(p, info, sig, secid); 839 } 840 841 int security_task_wait(struct task_struct *p) 842 { 843 return security_ops->task_wait(p); 844 } 845 846 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 847 unsigned long arg4, unsigned long arg5) 848 { 849 return security_ops->task_prctl(option, arg2, arg3, arg4, arg5); 850 } 851 852 void security_task_to_inode(struct task_struct *p, struct inode *inode) 853 { 854 security_ops->task_to_inode(p, inode); 855 } 856 857 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) 858 { 859 return security_ops->ipc_permission(ipcp, flag); 860 } 861 862 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 863 { 864 security_ops->ipc_getsecid(ipcp, secid); 865 } 866 867 int security_msg_msg_alloc(struct msg_msg *msg) 868 { 869 return security_ops->msg_msg_alloc_security(msg); 870 } 871 872 void security_msg_msg_free(struct msg_msg *msg) 873 { 874 security_ops->msg_msg_free_security(msg); 875 } 876 877 int security_msg_queue_alloc(struct msg_queue *msq) 878 { 879 return security_ops->msg_queue_alloc_security(msq); 880 } 881 882 void security_msg_queue_free(struct msg_queue *msq) 883 { 884 security_ops->msg_queue_free_security(msq); 885 } 886 887 int security_msg_queue_associate(struct msg_queue *msq, int msqflg) 888 { 889 return security_ops->msg_queue_associate(msq, msqflg); 890 } 891 892 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 893 { 894 return security_ops->msg_queue_msgctl(msq, cmd); 895 } 896 897 int security_msg_queue_msgsnd(struct msg_queue *msq, 898 struct msg_msg *msg, int msqflg) 899 { 900 return security_ops->msg_queue_msgsnd(msq, msg, msqflg); 901 } 902 903 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 904 struct task_struct *target, long type, int mode) 905 { 906 return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode); 907 } 908 909 int security_shm_alloc(struct shmid_kernel *shp) 910 { 911 return security_ops->shm_alloc_security(shp); 912 } 913 914 void security_shm_free(struct shmid_kernel *shp) 915 { 916 security_ops->shm_free_security(shp); 917 } 918 919 int security_shm_associate(struct shmid_kernel *shp, int shmflg) 920 { 921 return security_ops->shm_associate(shp, shmflg); 922 } 923 924 int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 925 { 926 return security_ops->shm_shmctl(shp, cmd); 927 } 928 929 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) 930 { 931 return security_ops->shm_shmat(shp, shmaddr, shmflg); 932 } 933 934 int security_sem_alloc(struct sem_array *sma) 935 { 936 return security_ops->sem_alloc_security(sma); 937 } 938 939 void security_sem_free(struct sem_array *sma) 940 { 941 security_ops->sem_free_security(sma); 942 } 943 944 int security_sem_associate(struct sem_array *sma, int semflg) 945 { 946 return security_ops->sem_associate(sma, semflg); 947 } 948 949 int security_sem_semctl(struct sem_array *sma, int cmd) 950 { 951 return security_ops->sem_semctl(sma, cmd); 952 } 953 954 int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 955 unsigned nsops, int alter) 956 { 957 return security_ops->sem_semop(sma, sops, nsops, alter); 958 } 959 960 void security_d_instantiate(struct dentry *dentry, struct inode *inode) 961 { 962 if (unlikely(inode && IS_PRIVATE(inode))) 963 return; 964 security_ops->d_instantiate(dentry, inode); 965 } 966 EXPORT_SYMBOL(security_d_instantiate); 967 968 int security_getprocattr(struct task_struct *p, char *name, char **value) 969 { 970 return security_ops->getprocattr(p, name, value); 971 } 972 973 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) 974 { 975 return security_ops->setprocattr(p, name, value, size); 976 } 977 978 int security_netlink_send(struct sock *sk, struct sk_buff *skb) 979 { 980 return security_ops->netlink_send(sk, skb); 981 } 982 983 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 984 { 985 return security_ops->secid_to_secctx(secid, secdata, seclen); 986 } 987 EXPORT_SYMBOL(security_secid_to_secctx); 988 989 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) 990 { 991 return security_ops->secctx_to_secid(secdata, seclen, secid); 992 } 993 EXPORT_SYMBOL(security_secctx_to_secid); 994 995 void security_release_secctx(char *secdata, u32 seclen) 996 { 997 security_ops->release_secctx(secdata, seclen); 998 } 999 EXPORT_SYMBOL(security_release_secctx); 1000 1001 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1002 { 1003 return security_ops->inode_notifysecctx(inode, ctx, ctxlen); 1004 } 1005 EXPORT_SYMBOL(security_inode_notifysecctx); 1006 1007 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1008 { 1009 return security_ops->inode_setsecctx(dentry, ctx, ctxlen); 1010 } 1011 EXPORT_SYMBOL(security_inode_setsecctx); 1012 1013 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1014 { 1015 return security_ops->inode_getsecctx(inode, ctx, ctxlen); 1016 } 1017 EXPORT_SYMBOL(security_inode_getsecctx); 1018 1019 #ifdef CONFIG_SECURITY_NETWORK 1020 1021 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) 1022 { 1023 return security_ops->unix_stream_connect(sock, other, newsk); 1024 } 1025 EXPORT_SYMBOL(security_unix_stream_connect); 1026 1027 int security_unix_may_send(struct socket *sock, struct socket *other) 1028 { 1029 return security_ops->unix_may_send(sock, other); 1030 } 1031 EXPORT_SYMBOL(security_unix_may_send); 1032 1033 int security_socket_create(int family, int type, int protocol, int kern) 1034 { 1035 return security_ops->socket_create(family, type, protocol, kern); 1036 } 1037 1038 int security_socket_post_create(struct socket *sock, int family, 1039 int type, int protocol, int kern) 1040 { 1041 return security_ops->socket_post_create(sock, family, type, 1042 protocol, kern); 1043 } 1044 1045 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) 1046 { 1047 return security_ops->socket_bind(sock, address, addrlen); 1048 } 1049 1050 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) 1051 { 1052 return security_ops->socket_connect(sock, address, addrlen); 1053 } 1054 1055 int security_socket_listen(struct socket *sock, int backlog) 1056 { 1057 return security_ops->socket_listen(sock, backlog); 1058 } 1059 1060 int security_socket_accept(struct socket *sock, struct socket *newsock) 1061 { 1062 return security_ops->socket_accept(sock, newsock); 1063 } 1064 1065 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) 1066 { 1067 return security_ops->socket_sendmsg(sock, msg, size); 1068 } 1069 1070 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1071 int size, int flags) 1072 { 1073 return security_ops->socket_recvmsg(sock, msg, size, flags); 1074 } 1075 1076 int security_socket_getsockname(struct socket *sock) 1077 { 1078 return security_ops->socket_getsockname(sock); 1079 } 1080 1081 int security_socket_getpeername(struct socket *sock) 1082 { 1083 return security_ops->socket_getpeername(sock); 1084 } 1085 1086 int security_socket_getsockopt(struct socket *sock, int level, int optname) 1087 { 1088 return security_ops->socket_getsockopt(sock, level, optname); 1089 } 1090 1091 int security_socket_setsockopt(struct socket *sock, int level, int optname) 1092 { 1093 return security_ops->socket_setsockopt(sock, level, optname); 1094 } 1095 1096 int security_socket_shutdown(struct socket *sock, int how) 1097 { 1098 return security_ops->socket_shutdown(sock, how); 1099 } 1100 1101 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) 1102 { 1103 return security_ops->socket_sock_rcv_skb(sk, skb); 1104 } 1105 EXPORT_SYMBOL(security_sock_rcv_skb); 1106 1107 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1108 int __user *optlen, unsigned len) 1109 { 1110 return security_ops->socket_getpeersec_stream(sock, optval, optlen, len); 1111 } 1112 1113 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1114 { 1115 return security_ops->socket_getpeersec_dgram(sock, skb, secid); 1116 } 1117 EXPORT_SYMBOL(security_socket_getpeersec_dgram); 1118 1119 int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1120 { 1121 return security_ops->sk_alloc_security(sk, family, priority); 1122 } 1123 1124 void security_sk_free(struct sock *sk) 1125 { 1126 security_ops->sk_free_security(sk); 1127 } 1128 1129 void security_sk_clone(const struct sock *sk, struct sock *newsk) 1130 { 1131 security_ops->sk_clone_security(sk, newsk); 1132 } 1133 EXPORT_SYMBOL(security_sk_clone); 1134 1135 void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1136 { 1137 security_ops->sk_getsecid(sk, &fl->flowi_secid); 1138 } 1139 EXPORT_SYMBOL(security_sk_classify_flow); 1140 1141 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1142 { 1143 security_ops->req_classify_flow(req, fl); 1144 } 1145 EXPORT_SYMBOL(security_req_classify_flow); 1146 1147 void security_sock_graft(struct sock *sk, struct socket *parent) 1148 { 1149 security_ops->sock_graft(sk, parent); 1150 } 1151 EXPORT_SYMBOL(security_sock_graft); 1152 1153 int security_inet_conn_request(struct sock *sk, 1154 struct sk_buff *skb, struct request_sock *req) 1155 { 1156 return security_ops->inet_conn_request(sk, skb, req); 1157 } 1158 EXPORT_SYMBOL(security_inet_conn_request); 1159 1160 void security_inet_csk_clone(struct sock *newsk, 1161 const struct request_sock *req) 1162 { 1163 security_ops->inet_csk_clone(newsk, req); 1164 } 1165 1166 void security_inet_conn_established(struct sock *sk, 1167 struct sk_buff *skb) 1168 { 1169 security_ops->inet_conn_established(sk, skb); 1170 } 1171 1172 int security_secmark_relabel_packet(u32 secid) 1173 { 1174 return security_ops->secmark_relabel_packet(secid); 1175 } 1176 EXPORT_SYMBOL(security_secmark_relabel_packet); 1177 1178 void security_secmark_refcount_inc(void) 1179 { 1180 security_ops->secmark_refcount_inc(); 1181 } 1182 EXPORT_SYMBOL(security_secmark_refcount_inc); 1183 1184 void security_secmark_refcount_dec(void) 1185 { 1186 security_ops->secmark_refcount_dec(); 1187 } 1188 EXPORT_SYMBOL(security_secmark_refcount_dec); 1189 1190 int security_tun_dev_create(void) 1191 { 1192 return security_ops->tun_dev_create(); 1193 } 1194 EXPORT_SYMBOL(security_tun_dev_create); 1195 1196 void security_tun_dev_post_create(struct sock *sk) 1197 { 1198 return security_ops->tun_dev_post_create(sk); 1199 } 1200 EXPORT_SYMBOL(security_tun_dev_post_create); 1201 1202 int security_tun_dev_attach(struct sock *sk) 1203 { 1204 return security_ops->tun_dev_attach(sk); 1205 } 1206 EXPORT_SYMBOL(security_tun_dev_attach); 1207 1208 #endif /* CONFIG_SECURITY_NETWORK */ 1209 1210 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1211 1212 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx) 1213 { 1214 return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx); 1215 } 1216 EXPORT_SYMBOL(security_xfrm_policy_alloc); 1217 1218 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, 1219 struct xfrm_sec_ctx **new_ctxp) 1220 { 1221 return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp); 1222 } 1223 1224 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1225 { 1226 security_ops->xfrm_policy_free_security(ctx); 1227 } 1228 EXPORT_SYMBOL(security_xfrm_policy_free); 1229 1230 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1231 { 1232 return security_ops->xfrm_policy_delete_security(ctx); 1233 } 1234 1235 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx) 1236 { 1237 return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0); 1238 } 1239 EXPORT_SYMBOL(security_xfrm_state_alloc); 1240 1241 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1242 struct xfrm_sec_ctx *polsec, u32 secid) 1243 { 1244 if (!polsec) 1245 return 0; 1246 /* 1247 * We want the context to be taken from secid which is usually 1248 * from the sock. 1249 */ 1250 return security_ops->xfrm_state_alloc_security(x, NULL, secid); 1251 } 1252 1253 int security_xfrm_state_delete(struct xfrm_state *x) 1254 { 1255 return security_ops->xfrm_state_delete_security(x); 1256 } 1257 EXPORT_SYMBOL(security_xfrm_state_delete); 1258 1259 void security_xfrm_state_free(struct xfrm_state *x) 1260 { 1261 security_ops->xfrm_state_free_security(x); 1262 } 1263 1264 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1265 { 1266 return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir); 1267 } 1268 1269 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1270 struct xfrm_policy *xp, 1271 const struct flowi *fl) 1272 { 1273 return security_ops->xfrm_state_pol_flow_match(x, xp, fl); 1274 } 1275 1276 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1277 { 1278 return security_ops->xfrm_decode_session(skb, secid, 1); 1279 } 1280 1281 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1282 { 1283 int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0); 1284 1285 BUG_ON(rc); 1286 } 1287 EXPORT_SYMBOL(security_skb_classify_flow); 1288 1289 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1290 1291 #ifdef CONFIG_KEYS 1292 1293 int security_key_alloc(struct key *key, const struct cred *cred, 1294 unsigned long flags) 1295 { 1296 return security_ops->key_alloc(key, cred, flags); 1297 } 1298 1299 void security_key_free(struct key *key) 1300 { 1301 security_ops->key_free(key); 1302 } 1303 1304 int security_key_permission(key_ref_t key_ref, 1305 const struct cred *cred, key_perm_t perm) 1306 { 1307 return security_ops->key_permission(key_ref, cred, perm); 1308 } 1309 1310 int security_key_getsecurity(struct key *key, char **_buffer) 1311 { 1312 return security_ops->key_getsecurity(key, _buffer); 1313 } 1314 1315 #endif /* CONFIG_KEYS */ 1316 1317 #ifdef CONFIG_AUDIT 1318 1319 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) 1320 { 1321 return security_ops->audit_rule_init(field, op, rulestr, lsmrule); 1322 } 1323 1324 int security_audit_rule_known(struct audit_krule *krule) 1325 { 1326 return security_ops->audit_rule_known(krule); 1327 } 1328 1329 void security_audit_rule_free(void *lsmrule) 1330 { 1331 security_ops->audit_rule_free(lsmrule); 1332 } 1333 1334 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1335 struct audit_context *actx) 1336 { 1337 return security_ops->audit_rule_match(secid, field, op, lsmrule, actx); 1338 } 1339 1340 #endif /* CONFIG_AUDIT */ 1341