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(struct user_namespace *ns, const struct cred *cred, 159 int cap) 160 { 161 return security_ops->capable(current, cred, ns, cap, 162 SECURITY_CAP_AUDIT); 163 } 164 165 int security_real_capable(struct task_struct *tsk, struct user_namespace *ns, 166 int cap) 167 { 168 const struct cred *cred; 169 int ret; 170 171 cred = get_task_cred(tsk); 172 ret = security_ops->capable(tsk, cred, ns, cap, SECURITY_CAP_AUDIT); 173 put_cred(cred); 174 return ret; 175 } 176 177 int security_real_capable_noaudit(struct task_struct *tsk, 178 struct user_namespace *ns, int cap) 179 { 180 const struct cred *cred; 181 int ret; 182 183 cred = get_task_cred(tsk); 184 ret = security_ops->capable(tsk, cred, ns, cap, SECURITY_CAP_NOAUDIT); 185 put_cred(cred); 186 return ret; 187 } 188 189 int security_quotactl(int cmds, int type, int id, struct super_block *sb) 190 { 191 return security_ops->quotactl(cmds, type, id, sb); 192 } 193 194 int security_quota_on(struct dentry *dentry) 195 { 196 return security_ops->quota_on(dentry); 197 } 198 199 int security_syslog(int type) 200 { 201 return security_ops->syslog(type); 202 } 203 204 int security_settime(const struct timespec *ts, const struct timezone *tz) 205 { 206 return security_ops->settime(ts, tz); 207 } 208 209 int security_vm_enough_memory(long pages) 210 { 211 WARN_ON(current->mm == NULL); 212 return security_ops->vm_enough_memory(current->mm, pages); 213 } 214 215 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 216 { 217 WARN_ON(mm == NULL); 218 return security_ops->vm_enough_memory(mm, pages); 219 } 220 221 int security_vm_enough_memory_kern(long pages) 222 { 223 /* If current->mm is a kernel thread then we will pass NULL, 224 for this specific case that is fine */ 225 return security_ops->vm_enough_memory(current->mm, pages); 226 } 227 228 int security_bprm_set_creds(struct linux_binprm *bprm) 229 { 230 return security_ops->bprm_set_creds(bprm); 231 } 232 233 int security_bprm_check(struct linux_binprm *bprm) 234 { 235 int ret; 236 237 ret = security_ops->bprm_check_security(bprm); 238 if (ret) 239 return ret; 240 return ima_bprm_check(bprm); 241 } 242 243 void security_bprm_committing_creds(struct linux_binprm *bprm) 244 { 245 security_ops->bprm_committing_creds(bprm); 246 } 247 248 void security_bprm_committed_creds(struct linux_binprm *bprm) 249 { 250 security_ops->bprm_committed_creds(bprm); 251 } 252 253 int security_bprm_secureexec(struct linux_binprm *bprm) 254 { 255 return security_ops->bprm_secureexec(bprm); 256 } 257 258 int security_sb_alloc(struct super_block *sb) 259 { 260 return security_ops->sb_alloc_security(sb); 261 } 262 263 void security_sb_free(struct super_block *sb) 264 { 265 security_ops->sb_free_security(sb); 266 } 267 268 int security_sb_copy_data(char *orig, char *copy) 269 { 270 return security_ops->sb_copy_data(orig, copy); 271 } 272 EXPORT_SYMBOL(security_sb_copy_data); 273 274 int security_sb_remount(struct super_block *sb, void *data) 275 { 276 return security_ops->sb_remount(sb, data); 277 } 278 279 int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 280 { 281 return security_ops->sb_kern_mount(sb, flags, data); 282 } 283 284 int security_sb_show_options(struct seq_file *m, struct super_block *sb) 285 { 286 return security_ops->sb_show_options(m, sb); 287 } 288 289 int security_sb_statfs(struct dentry *dentry) 290 { 291 return security_ops->sb_statfs(dentry); 292 } 293 294 int security_sb_mount(char *dev_name, struct path *path, 295 char *type, unsigned long flags, void *data) 296 { 297 return security_ops->sb_mount(dev_name, path, type, flags, data); 298 } 299 300 int security_sb_umount(struct vfsmount *mnt, int flags) 301 { 302 return security_ops->sb_umount(mnt, flags); 303 } 304 305 int security_sb_pivotroot(struct path *old_path, struct path *new_path) 306 { 307 return security_ops->sb_pivotroot(old_path, new_path); 308 } 309 310 int security_sb_set_mnt_opts(struct super_block *sb, 311 struct security_mnt_opts *opts) 312 { 313 return security_ops->sb_set_mnt_opts(sb, opts); 314 } 315 EXPORT_SYMBOL(security_sb_set_mnt_opts); 316 317 void security_sb_clone_mnt_opts(const struct super_block *oldsb, 318 struct super_block *newsb) 319 { 320 security_ops->sb_clone_mnt_opts(oldsb, newsb); 321 } 322 EXPORT_SYMBOL(security_sb_clone_mnt_opts); 323 324 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 325 { 326 return security_ops->sb_parse_opts_str(options, opts); 327 } 328 EXPORT_SYMBOL(security_sb_parse_opts_str); 329 330 int security_inode_alloc(struct inode *inode) 331 { 332 inode->i_security = NULL; 333 return security_ops->inode_alloc_security(inode); 334 } 335 336 void security_inode_free(struct inode *inode) 337 { 338 integrity_inode_free(inode); 339 security_ops->inode_free_security(inode); 340 } 341 342 int security_inode_init_security(struct inode *inode, struct inode *dir, 343 const struct qstr *qstr, 344 const initxattrs initxattrs, void *fs_data) 345 { 346 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; 347 struct xattr *lsm_xattr, *evm_xattr, *xattr; 348 int ret; 349 350 if (unlikely(IS_PRIVATE(inode))) 351 return 0; 352 353 memset(new_xattrs, 0, sizeof new_xattrs); 354 if (!initxattrs) 355 return security_ops->inode_init_security(inode, dir, qstr, 356 NULL, NULL, NULL); 357 lsm_xattr = new_xattrs; 358 ret = security_ops->inode_init_security(inode, dir, qstr, 359 &lsm_xattr->name, 360 &lsm_xattr->value, 361 &lsm_xattr->value_len); 362 if (ret) 363 goto out; 364 365 evm_xattr = lsm_xattr + 1; 366 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); 367 if (ret) 368 goto out; 369 ret = initxattrs(inode, new_xattrs, fs_data); 370 out: 371 for (xattr = new_xattrs; xattr->name != NULL; xattr++) { 372 kfree(xattr->name); 373 kfree(xattr->value); 374 } 375 return (ret == -EOPNOTSUPP) ? 0 : ret; 376 } 377 EXPORT_SYMBOL(security_inode_init_security); 378 379 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 380 const struct qstr *qstr, char **name, 381 void **value, size_t *len) 382 { 383 if (unlikely(IS_PRIVATE(inode))) 384 return -EOPNOTSUPP; 385 return security_ops->inode_init_security(inode, dir, qstr, name, value, 386 len); 387 } 388 EXPORT_SYMBOL(security_old_inode_init_security); 389 390 #ifdef CONFIG_SECURITY_PATH 391 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode, 392 unsigned int dev) 393 { 394 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 395 return 0; 396 return security_ops->path_mknod(dir, dentry, mode, dev); 397 } 398 EXPORT_SYMBOL(security_path_mknod); 399 400 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode) 401 { 402 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 403 return 0; 404 return security_ops->path_mkdir(dir, dentry, mode); 405 } 406 EXPORT_SYMBOL(security_path_mkdir); 407 408 int security_path_rmdir(struct path *dir, struct dentry *dentry) 409 { 410 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 411 return 0; 412 return security_ops->path_rmdir(dir, dentry); 413 } 414 415 int security_path_unlink(struct path *dir, struct dentry *dentry) 416 { 417 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 418 return 0; 419 return security_ops->path_unlink(dir, dentry); 420 } 421 EXPORT_SYMBOL(security_path_unlink); 422 423 int security_path_symlink(struct path *dir, struct dentry *dentry, 424 const char *old_name) 425 { 426 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 427 return 0; 428 return security_ops->path_symlink(dir, dentry, old_name); 429 } 430 431 int security_path_link(struct dentry *old_dentry, struct path *new_dir, 432 struct dentry *new_dentry) 433 { 434 if (unlikely(IS_PRIVATE(old_dentry->d_inode))) 435 return 0; 436 return security_ops->path_link(old_dentry, new_dir, new_dentry); 437 } 438 439 int security_path_rename(struct path *old_dir, struct dentry *old_dentry, 440 struct path *new_dir, struct dentry *new_dentry) 441 { 442 if (unlikely(IS_PRIVATE(old_dentry->d_inode) || 443 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) 444 return 0; 445 return security_ops->path_rename(old_dir, old_dentry, new_dir, 446 new_dentry); 447 } 448 EXPORT_SYMBOL(security_path_rename); 449 450 int security_path_truncate(struct path *path) 451 { 452 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 453 return 0; 454 return security_ops->path_truncate(path); 455 } 456 457 int security_path_chmod(struct dentry *dentry, struct vfsmount *mnt, 458 umode_t mode) 459 { 460 if (unlikely(IS_PRIVATE(dentry->d_inode))) 461 return 0; 462 return security_ops->path_chmod(dentry, mnt, mode); 463 } 464 465 int security_path_chown(struct path *path, uid_t uid, gid_t gid) 466 { 467 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 468 return 0; 469 return security_ops->path_chown(path, uid, gid); 470 } 471 472 int security_path_chroot(struct path *path) 473 { 474 return security_ops->path_chroot(path); 475 } 476 #endif 477 478 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) 479 { 480 if (unlikely(IS_PRIVATE(dir))) 481 return 0; 482 return security_ops->inode_create(dir, dentry, mode); 483 } 484 EXPORT_SYMBOL_GPL(security_inode_create); 485 486 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 487 struct dentry *new_dentry) 488 { 489 if (unlikely(IS_PRIVATE(old_dentry->d_inode))) 490 return 0; 491 return security_ops->inode_link(old_dentry, dir, new_dentry); 492 } 493 494 int security_inode_unlink(struct inode *dir, struct dentry *dentry) 495 { 496 if (unlikely(IS_PRIVATE(dentry->d_inode))) 497 return 0; 498 return security_ops->inode_unlink(dir, dentry); 499 } 500 501 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 502 const char *old_name) 503 { 504 if (unlikely(IS_PRIVATE(dir))) 505 return 0; 506 return security_ops->inode_symlink(dir, dentry, old_name); 507 } 508 509 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 510 { 511 if (unlikely(IS_PRIVATE(dir))) 512 return 0; 513 return security_ops->inode_mkdir(dir, dentry, mode); 514 } 515 EXPORT_SYMBOL_GPL(security_inode_mkdir); 516 517 int security_inode_rmdir(struct inode *dir, struct dentry *dentry) 518 { 519 if (unlikely(IS_PRIVATE(dentry->d_inode))) 520 return 0; 521 return security_ops->inode_rmdir(dir, dentry); 522 } 523 524 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) 525 { 526 if (unlikely(IS_PRIVATE(dir))) 527 return 0; 528 return security_ops->inode_mknod(dir, dentry, mode, dev); 529 } 530 531 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 532 struct inode *new_dir, struct dentry *new_dentry) 533 { 534 if (unlikely(IS_PRIVATE(old_dentry->d_inode) || 535 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) 536 return 0; 537 return security_ops->inode_rename(old_dir, old_dentry, 538 new_dir, new_dentry); 539 } 540 541 int security_inode_readlink(struct dentry *dentry) 542 { 543 if (unlikely(IS_PRIVATE(dentry->d_inode))) 544 return 0; 545 return security_ops->inode_readlink(dentry); 546 } 547 548 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd) 549 { 550 if (unlikely(IS_PRIVATE(dentry->d_inode))) 551 return 0; 552 return security_ops->inode_follow_link(dentry, nd); 553 } 554 555 int security_inode_permission(struct inode *inode, int mask) 556 { 557 if (unlikely(IS_PRIVATE(inode))) 558 return 0; 559 return security_ops->inode_permission(inode, mask); 560 } 561 562 int security_inode_setattr(struct dentry *dentry, struct iattr *attr) 563 { 564 int ret; 565 566 if (unlikely(IS_PRIVATE(dentry->d_inode))) 567 return 0; 568 ret = security_ops->inode_setattr(dentry, attr); 569 if (ret) 570 return ret; 571 return evm_inode_setattr(dentry, attr); 572 } 573 EXPORT_SYMBOL_GPL(security_inode_setattr); 574 575 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry) 576 { 577 if (unlikely(IS_PRIVATE(dentry->d_inode))) 578 return 0; 579 return security_ops->inode_getattr(mnt, dentry); 580 } 581 582 int security_inode_setxattr(struct dentry *dentry, const char *name, 583 const void *value, size_t size, int flags) 584 { 585 int ret; 586 587 if (unlikely(IS_PRIVATE(dentry->d_inode))) 588 return 0; 589 ret = security_ops->inode_setxattr(dentry, name, value, size, flags); 590 if (ret) 591 return ret; 592 return evm_inode_setxattr(dentry, name, value, size); 593 } 594 595 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 596 const void *value, size_t size, int flags) 597 { 598 if (unlikely(IS_PRIVATE(dentry->d_inode))) 599 return; 600 security_ops->inode_post_setxattr(dentry, name, value, size, flags); 601 evm_inode_post_setxattr(dentry, name, value, size); 602 } 603 604 int security_inode_getxattr(struct dentry *dentry, const char *name) 605 { 606 if (unlikely(IS_PRIVATE(dentry->d_inode))) 607 return 0; 608 return security_ops->inode_getxattr(dentry, name); 609 } 610 611 int security_inode_listxattr(struct dentry *dentry) 612 { 613 if (unlikely(IS_PRIVATE(dentry->d_inode))) 614 return 0; 615 return security_ops->inode_listxattr(dentry); 616 } 617 618 int security_inode_removexattr(struct dentry *dentry, const char *name) 619 { 620 int ret; 621 622 if (unlikely(IS_PRIVATE(dentry->d_inode))) 623 return 0; 624 ret = security_ops->inode_removexattr(dentry, name); 625 if (ret) 626 return ret; 627 return evm_inode_removexattr(dentry, name); 628 } 629 630 int security_inode_need_killpriv(struct dentry *dentry) 631 { 632 return security_ops->inode_need_killpriv(dentry); 633 } 634 635 int security_inode_killpriv(struct dentry *dentry) 636 { 637 return security_ops->inode_killpriv(dentry); 638 } 639 640 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc) 641 { 642 if (unlikely(IS_PRIVATE(inode))) 643 return -EOPNOTSUPP; 644 return security_ops->inode_getsecurity(inode, name, buffer, alloc); 645 } 646 647 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 648 { 649 if (unlikely(IS_PRIVATE(inode))) 650 return -EOPNOTSUPP; 651 return security_ops->inode_setsecurity(inode, name, value, size, flags); 652 } 653 654 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 655 { 656 if (unlikely(IS_PRIVATE(inode))) 657 return 0; 658 return security_ops->inode_listsecurity(inode, buffer, buffer_size); 659 } 660 661 void security_inode_getsecid(const struct inode *inode, u32 *secid) 662 { 663 security_ops->inode_getsecid(inode, secid); 664 } 665 666 int security_file_permission(struct file *file, int mask) 667 { 668 int ret; 669 670 ret = security_ops->file_permission(file, mask); 671 if (ret) 672 return ret; 673 674 return fsnotify_perm(file, mask); 675 } 676 677 int security_file_alloc(struct file *file) 678 { 679 return security_ops->file_alloc_security(file); 680 } 681 682 void security_file_free(struct file *file) 683 { 684 security_ops->file_free_security(file); 685 } 686 687 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 688 { 689 return security_ops->file_ioctl(file, cmd, arg); 690 } 691 692 int security_file_mmap(struct file *file, unsigned long reqprot, 693 unsigned long prot, unsigned long flags, 694 unsigned long addr, unsigned long addr_only) 695 { 696 int ret; 697 698 ret = security_ops->file_mmap(file, reqprot, prot, flags, addr, addr_only); 699 if (ret) 700 return ret; 701 return ima_file_mmap(file, prot); 702 } 703 704 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 705 unsigned long prot) 706 { 707 return security_ops->file_mprotect(vma, reqprot, prot); 708 } 709 710 int security_file_lock(struct file *file, unsigned int cmd) 711 { 712 return security_ops->file_lock(file, cmd); 713 } 714 715 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) 716 { 717 return security_ops->file_fcntl(file, cmd, arg); 718 } 719 720 int security_file_set_fowner(struct file *file) 721 { 722 return security_ops->file_set_fowner(file); 723 } 724 725 int security_file_send_sigiotask(struct task_struct *tsk, 726 struct fown_struct *fown, int sig) 727 { 728 return security_ops->file_send_sigiotask(tsk, fown, sig); 729 } 730 731 int security_file_receive(struct file *file) 732 { 733 return security_ops->file_receive(file); 734 } 735 736 int security_dentry_open(struct file *file, const struct cred *cred) 737 { 738 int ret; 739 740 ret = security_ops->dentry_open(file, cred); 741 if (ret) 742 return ret; 743 744 return fsnotify_perm(file, MAY_OPEN); 745 } 746 747 int security_task_create(unsigned long clone_flags) 748 { 749 return security_ops->task_create(clone_flags); 750 } 751 752 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 753 { 754 return security_ops->cred_alloc_blank(cred, gfp); 755 } 756 757 void security_cred_free(struct cred *cred) 758 { 759 security_ops->cred_free(cred); 760 } 761 762 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) 763 { 764 return security_ops->cred_prepare(new, old, gfp); 765 } 766 767 void security_transfer_creds(struct cred *new, const struct cred *old) 768 { 769 security_ops->cred_transfer(new, old); 770 } 771 772 int security_kernel_act_as(struct cred *new, u32 secid) 773 { 774 return security_ops->kernel_act_as(new, secid); 775 } 776 777 int security_kernel_create_files_as(struct cred *new, struct inode *inode) 778 { 779 return security_ops->kernel_create_files_as(new, inode); 780 } 781 782 int security_kernel_module_request(char *kmod_name) 783 { 784 return security_ops->kernel_module_request(kmod_name); 785 } 786 787 int security_task_fix_setuid(struct cred *new, const struct cred *old, 788 int flags) 789 { 790 return security_ops->task_fix_setuid(new, old, flags); 791 } 792 793 int security_task_setpgid(struct task_struct *p, pid_t pgid) 794 { 795 return security_ops->task_setpgid(p, pgid); 796 } 797 798 int security_task_getpgid(struct task_struct *p) 799 { 800 return security_ops->task_getpgid(p); 801 } 802 803 int security_task_getsid(struct task_struct *p) 804 { 805 return security_ops->task_getsid(p); 806 } 807 808 void security_task_getsecid(struct task_struct *p, u32 *secid) 809 { 810 security_ops->task_getsecid(p, secid); 811 } 812 EXPORT_SYMBOL(security_task_getsecid); 813 814 int security_task_setnice(struct task_struct *p, int nice) 815 { 816 return security_ops->task_setnice(p, nice); 817 } 818 819 int security_task_setioprio(struct task_struct *p, int ioprio) 820 { 821 return security_ops->task_setioprio(p, ioprio); 822 } 823 824 int security_task_getioprio(struct task_struct *p) 825 { 826 return security_ops->task_getioprio(p); 827 } 828 829 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 830 struct rlimit *new_rlim) 831 { 832 return security_ops->task_setrlimit(p, resource, new_rlim); 833 } 834 835 int security_task_setscheduler(struct task_struct *p) 836 { 837 return security_ops->task_setscheduler(p); 838 } 839 840 int security_task_getscheduler(struct task_struct *p) 841 { 842 return security_ops->task_getscheduler(p); 843 } 844 845 int security_task_movememory(struct task_struct *p) 846 { 847 return security_ops->task_movememory(p); 848 } 849 850 int security_task_kill(struct task_struct *p, struct siginfo *info, 851 int sig, u32 secid) 852 { 853 return security_ops->task_kill(p, info, sig, secid); 854 } 855 856 int security_task_wait(struct task_struct *p) 857 { 858 return security_ops->task_wait(p); 859 } 860 861 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 862 unsigned long arg4, unsigned long arg5) 863 { 864 return security_ops->task_prctl(option, arg2, arg3, arg4, arg5); 865 } 866 867 void security_task_to_inode(struct task_struct *p, struct inode *inode) 868 { 869 security_ops->task_to_inode(p, inode); 870 } 871 872 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) 873 { 874 return security_ops->ipc_permission(ipcp, flag); 875 } 876 877 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 878 { 879 security_ops->ipc_getsecid(ipcp, secid); 880 } 881 882 int security_msg_msg_alloc(struct msg_msg *msg) 883 { 884 return security_ops->msg_msg_alloc_security(msg); 885 } 886 887 void security_msg_msg_free(struct msg_msg *msg) 888 { 889 security_ops->msg_msg_free_security(msg); 890 } 891 892 int security_msg_queue_alloc(struct msg_queue *msq) 893 { 894 return security_ops->msg_queue_alloc_security(msq); 895 } 896 897 void security_msg_queue_free(struct msg_queue *msq) 898 { 899 security_ops->msg_queue_free_security(msq); 900 } 901 902 int security_msg_queue_associate(struct msg_queue *msq, int msqflg) 903 { 904 return security_ops->msg_queue_associate(msq, msqflg); 905 } 906 907 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 908 { 909 return security_ops->msg_queue_msgctl(msq, cmd); 910 } 911 912 int security_msg_queue_msgsnd(struct msg_queue *msq, 913 struct msg_msg *msg, int msqflg) 914 { 915 return security_ops->msg_queue_msgsnd(msq, msg, msqflg); 916 } 917 918 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 919 struct task_struct *target, long type, int mode) 920 { 921 return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode); 922 } 923 924 int security_shm_alloc(struct shmid_kernel *shp) 925 { 926 return security_ops->shm_alloc_security(shp); 927 } 928 929 void security_shm_free(struct shmid_kernel *shp) 930 { 931 security_ops->shm_free_security(shp); 932 } 933 934 int security_shm_associate(struct shmid_kernel *shp, int shmflg) 935 { 936 return security_ops->shm_associate(shp, shmflg); 937 } 938 939 int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 940 { 941 return security_ops->shm_shmctl(shp, cmd); 942 } 943 944 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) 945 { 946 return security_ops->shm_shmat(shp, shmaddr, shmflg); 947 } 948 949 int security_sem_alloc(struct sem_array *sma) 950 { 951 return security_ops->sem_alloc_security(sma); 952 } 953 954 void security_sem_free(struct sem_array *sma) 955 { 956 security_ops->sem_free_security(sma); 957 } 958 959 int security_sem_associate(struct sem_array *sma, int semflg) 960 { 961 return security_ops->sem_associate(sma, semflg); 962 } 963 964 int security_sem_semctl(struct sem_array *sma, int cmd) 965 { 966 return security_ops->sem_semctl(sma, cmd); 967 } 968 969 int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 970 unsigned nsops, int alter) 971 { 972 return security_ops->sem_semop(sma, sops, nsops, alter); 973 } 974 975 void security_d_instantiate(struct dentry *dentry, struct inode *inode) 976 { 977 if (unlikely(inode && IS_PRIVATE(inode))) 978 return; 979 security_ops->d_instantiate(dentry, inode); 980 } 981 EXPORT_SYMBOL(security_d_instantiate); 982 983 int security_getprocattr(struct task_struct *p, char *name, char **value) 984 { 985 return security_ops->getprocattr(p, name, value); 986 } 987 988 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) 989 { 990 return security_ops->setprocattr(p, name, value, size); 991 } 992 993 int security_netlink_send(struct sock *sk, struct sk_buff *skb) 994 { 995 return security_ops->netlink_send(sk, skb); 996 } 997 998 int security_netlink_recv(struct sk_buff *skb, int cap) 999 { 1000 return security_ops->netlink_recv(skb, cap); 1001 } 1002 EXPORT_SYMBOL(security_netlink_recv); 1003 1004 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1005 { 1006 return security_ops->secid_to_secctx(secid, secdata, seclen); 1007 } 1008 EXPORT_SYMBOL(security_secid_to_secctx); 1009 1010 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) 1011 { 1012 return security_ops->secctx_to_secid(secdata, seclen, secid); 1013 } 1014 EXPORT_SYMBOL(security_secctx_to_secid); 1015 1016 void security_release_secctx(char *secdata, u32 seclen) 1017 { 1018 security_ops->release_secctx(secdata, seclen); 1019 } 1020 EXPORT_SYMBOL(security_release_secctx); 1021 1022 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1023 { 1024 return security_ops->inode_notifysecctx(inode, ctx, ctxlen); 1025 } 1026 EXPORT_SYMBOL(security_inode_notifysecctx); 1027 1028 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1029 { 1030 return security_ops->inode_setsecctx(dentry, ctx, ctxlen); 1031 } 1032 EXPORT_SYMBOL(security_inode_setsecctx); 1033 1034 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1035 { 1036 return security_ops->inode_getsecctx(inode, ctx, ctxlen); 1037 } 1038 EXPORT_SYMBOL(security_inode_getsecctx); 1039 1040 #ifdef CONFIG_SECURITY_NETWORK 1041 1042 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) 1043 { 1044 return security_ops->unix_stream_connect(sock, other, newsk); 1045 } 1046 EXPORT_SYMBOL(security_unix_stream_connect); 1047 1048 int security_unix_may_send(struct socket *sock, struct socket *other) 1049 { 1050 return security_ops->unix_may_send(sock, other); 1051 } 1052 EXPORT_SYMBOL(security_unix_may_send); 1053 1054 int security_socket_create(int family, int type, int protocol, int kern) 1055 { 1056 return security_ops->socket_create(family, type, protocol, kern); 1057 } 1058 1059 int security_socket_post_create(struct socket *sock, int family, 1060 int type, int protocol, int kern) 1061 { 1062 return security_ops->socket_post_create(sock, family, type, 1063 protocol, kern); 1064 } 1065 1066 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) 1067 { 1068 return security_ops->socket_bind(sock, address, addrlen); 1069 } 1070 1071 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) 1072 { 1073 return security_ops->socket_connect(sock, address, addrlen); 1074 } 1075 1076 int security_socket_listen(struct socket *sock, int backlog) 1077 { 1078 return security_ops->socket_listen(sock, backlog); 1079 } 1080 1081 int security_socket_accept(struct socket *sock, struct socket *newsock) 1082 { 1083 return security_ops->socket_accept(sock, newsock); 1084 } 1085 1086 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) 1087 { 1088 return security_ops->socket_sendmsg(sock, msg, size); 1089 } 1090 1091 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1092 int size, int flags) 1093 { 1094 return security_ops->socket_recvmsg(sock, msg, size, flags); 1095 } 1096 1097 int security_socket_getsockname(struct socket *sock) 1098 { 1099 return security_ops->socket_getsockname(sock); 1100 } 1101 1102 int security_socket_getpeername(struct socket *sock) 1103 { 1104 return security_ops->socket_getpeername(sock); 1105 } 1106 1107 int security_socket_getsockopt(struct socket *sock, int level, int optname) 1108 { 1109 return security_ops->socket_getsockopt(sock, level, optname); 1110 } 1111 1112 int security_socket_setsockopt(struct socket *sock, int level, int optname) 1113 { 1114 return security_ops->socket_setsockopt(sock, level, optname); 1115 } 1116 1117 int security_socket_shutdown(struct socket *sock, int how) 1118 { 1119 return security_ops->socket_shutdown(sock, how); 1120 } 1121 1122 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) 1123 { 1124 return security_ops->socket_sock_rcv_skb(sk, skb); 1125 } 1126 EXPORT_SYMBOL(security_sock_rcv_skb); 1127 1128 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1129 int __user *optlen, unsigned len) 1130 { 1131 return security_ops->socket_getpeersec_stream(sock, optval, optlen, len); 1132 } 1133 1134 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1135 { 1136 return security_ops->socket_getpeersec_dgram(sock, skb, secid); 1137 } 1138 EXPORT_SYMBOL(security_socket_getpeersec_dgram); 1139 1140 int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1141 { 1142 return security_ops->sk_alloc_security(sk, family, priority); 1143 } 1144 1145 void security_sk_free(struct sock *sk) 1146 { 1147 security_ops->sk_free_security(sk); 1148 } 1149 1150 void security_sk_clone(const struct sock *sk, struct sock *newsk) 1151 { 1152 security_ops->sk_clone_security(sk, newsk); 1153 } 1154 EXPORT_SYMBOL(security_sk_clone); 1155 1156 void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1157 { 1158 security_ops->sk_getsecid(sk, &fl->flowi_secid); 1159 } 1160 EXPORT_SYMBOL(security_sk_classify_flow); 1161 1162 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1163 { 1164 security_ops->req_classify_flow(req, fl); 1165 } 1166 EXPORT_SYMBOL(security_req_classify_flow); 1167 1168 void security_sock_graft(struct sock *sk, struct socket *parent) 1169 { 1170 security_ops->sock_graft(sk, parent); 1171 } 1172 EXPORT_SYMBOL(security_sock_graft); 1173 1174 int security_inet_conn_request(struct sock *sk, 1175 struct sk_buff *skb, struct request_sock *req) 1176 { 1177 return security_ops->inet_conn_request(sk, skb, req); 1178 } 1179 EXPORT_SYMBOL(security_inet_conn_request); 1180 1181 void security_inet_csk_clone(struct sock *newsk, 1182 const struct request_sock *req) 1183 { 1184 security_ops->inet_csk_clone(newsk, req); 1185 } 1186 1187 void security_inet_conn_established(struct sock *sk, 1188 struct sk_buff *skb) 1189 { 1190 security_ops->inet_conn_established(sk, skb); 1191 } 1192 1193 int security_secmark_relabel_packet(u32 secid) 1194 { 1195 return security_ops->secmark_relabel_packet(secid); 1196 } 1197 EXPORT_SYMBOL(security_secmark_relabel_packet); 1198 1199 void security_secmark_refcount_inc(void) 1200 { 1201 security_ops->secmark_refcount_inc(); 1202 } 1203 EXPORT_SYMBOL(security_secmark_refcount_inc); 1204 1205 void security_secmark_refcount_dec(void) 1206 { 1207 security_ops->secmark_refcount_dec(); 1208 } 1209 EXPORT_SYMBOL(security_secmark_refcount_dec); 1210 1211 int security_tun_dev_create(void) 1212 { 1213 return security_ops->tun_dev_create(); 1214 } 1215 EXPORT_SYMBOL(security_tun_dev_create); 1216 1217 void security_tun_dev_post_create(struct sock *sk) 1218 { 1219 return security_ops->tun_dev_post_create(sk); 1220 } 1221 EXPORT_SYMBOL(security_tun_dev_post_create); 1222 1223 int security_tun_dev_attach(struct sock *sk) 1224 { 1225 return security_ops->tun_dev_attach(sk); 1226 } 1227 EXPORT_SYMBOL(security_tun_dev_attach); 1228 1229 #endif /* CONFIG_SECURITY_NETWORK */ 1230 1231 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1232 1233 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx) 1234 { 1235 return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx); 1236 } 1237 EXPORT_SYMBOL(security_xfrm_policy_alloc); 1238 1239 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, 1240 struct xfrm_sec_ctx **new_ctxp) 1241 { 1242 return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp); 1243 } 1244 1245 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1246 { 1247 security_ops->xfrm_policy_free_security(ctx); 1248 } 1249 EXPORT_SYMBOL(security_xfrm_policy_free); 1250 1251 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1252 { 1253 return security_ops->xfrm_policy_delete_security(ctx); 1254 } 1255 1256 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx) 1257 { 1258 return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0); 1259 } 1260 EXPORT_SYMBOL(security_xfrm_state_alloc); 1261 1262 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1263 struct xfrm_sec_ctx *polsec, u32 secid) 1264 { 1265 if (!polsec) 1266 return 0; 1267 /* 1268 * We want the context to be taken from secid which is usually 1269 * from the sock. 1270 */ 1271 return security_ops->xfrm_state_alloc_security(x, NULL, secid); 1272 } 1273 1274 int security_xfrm_state_delete(struct xfrm_state *x) 1275 { 1276 return security_ops->xfrm_state_delete_security(x); 1277 } 1278 EXPORT_SYMBOL(security_xfrm_state_delete); 1279 1280 void security_xfrm_state_free(struct xfrm_state *x) 1281 { 1282 security_ops->xfrm_state_free_security(x); 1283 } 1284 1285 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1286 { 1287 return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir); 1288 } 1289 1290 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1291 struct xfrm_policy *xp, 1292 const struct flowi *fl) 1293 { 1294 return security_ops->xfrm_state_pol_flow_match(x, xp, fl); 1295 } 1296 1297 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1298 { 1299 return security_ops->xfrm_decode_session(skb, secid, 1); 1300 } 1301 1302 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1303 { 1304 int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0); 1305 1306 BUG_ON(rc); 1307 } 1308 EXPORT_SYMBOL(security_skb_classify_flow); 1309 1310 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1311 1312 #ifdef CONFIG_KEYS 1313 1314 int security_key_alloc(struct key *key, const struct cred *cred, 1315 unsigned long flags) 1316 { 1317 return security_ops->key_alloc(key, cred, flags); 1318 } 1319 1320 void security_key_free(struct key *key) 1321 { 1322 security_ops->key_free(key); 1323 } 1324 1325 int security_key_permission(key_ref_t key_ref, 1326 const struct cred *cred, key_perm_t perm) 1327 { 1328 return security_ops->key_permission(key_ref, cred, perm); 1329 } 1330 1331 int security_key_getsecurity(struct key *key, char **_buffer) 1332 { 1333 return security_ops->key_getsecurity(key, _buffer); 1334 } 1335 1336 #endif /* CONFIG_KEYS */ 1337 1338 #ifdef CONFIG_AUDIT 1339 1340 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) 1341 { 1342 return security_ops->audit_rule_init(field, op, rulestr, lsmrule); 1343 } 1344 1345 int security_audit_rule_known(struct audit_krule *krule) 1346 { 1347 return security_ops->audit_rule_known(krule); 1348 } 1349 1350 void security_audit_rule_free(void *lsmrule) 1351 { 1352 security_ops->audit_rule_free(lsmrule); 1353 } 1354 1355 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1356 struct audit_context *actx) 1357 { 1358 return security_ops->audit_rule_match(secid, field, op, lsmrule, actx); 1359 } 1360 1361 #endif /* CONFIG_AUDIT */ 1362