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 #include <linux/fsnotify.h> 23 #include <linux/mman.h> 24 #include <linux/mount.h> 25 #include <linux/personality.h> 26 #include <net/flow.h> 27 28 #define MAX_LSM_EVM_XATTR 2 29 30 /* Boot-time LSM user choice */ 31 static __initdata char chosen_lsm[SECURITY_NAME_MAX + 1] = 32 CONFIG_DEFAULT_SECURITY; 33 34 static struct security_operations *security_ops; 35 static struct security_operations default_security_ops = { 36 .name = "default", 37 }; 38 39 static inline int __init verify(struct security_operations *ops) 40 { 41 /* verify the security_operations structure exists */ 42 if (!ops) 43 return -EINVAL; 44 security_fixup_ops(ops); 45 return 0; 46 } 47 48 static void __init do_security_initcalls(void) 49 { 50 initcall_t *call; 51 call = __security_initcall_start; 52 while (call < __security_initcall_end) { 53 (*call) (); 54 call++; 55 } 56 } 57 58 /** 59 * security_init - initializes the security framework 60 * 61 * This should be called early in the kernel initialization sequence. 62 */ 63 int __init security_init(void) 64 { 65 printk(KERN_INFO "Security Framework initialized\n"); 66 67 security_fixup_ops(&default_security_ops); 68 security_ops = &default_security_ops; 69 do_security_initcalls(); 70 71 return 0; 72 } 73 74 void reset_security_ops(void) 75 { 76 security_ops = &default_security_ops; 77 } 78 79 /* Save user chosen LSM */ 80 static int __init choose_lsm(char *str) 81 { 82 strncpy(chosen_lsm, str, SECURITY_NAME_MAX); 83 return 1; 84 } 85 __setup("security=", choose_lsm); 86 87 /** 88 * security_module_enable - Load given security module on boot ? 89 * @ops: a pointer to the struct security_operations that is to be checked. 90 * 91 * Each LSM must pass this method before registering its own operations 92 * to avoid security registration races. This method may also be used 93 * to check if your LSM is currently loaded during kernel initialization. 94 * 95 * Return true if: 96 * -The passed LSM is the one chosen by user at boot time, 97 * -or the passed LSM is configured as the default and the user did not 98 * choose an alternate LSM at boot time. 99 * Otherwise, return false. 100 */ 101 int __init security_module_enable(struct security_operations *ops) 102 { 103 return !strcmp(ops->name, chosen_lsm); 104 } 105 106 /** 107 * register_security - registers a security framework with the kernel 108 * @ops: a pointer to the struct security_options that is to be registered 109 * 110 * This function allows a security module to register itself with the 111 * kernel security subsystem. Some rudimentary checking is done on the @ops 112 * value passed to this function. You'll need to check first if your LSM 113 * is allowed to register its @ops by calling security_module_enable(@ops). 114 * 115 * If there is already a security module registered with the kernel, 116 * an error will be returned. Otherwise %0 is returned on success. 117 */ 118 int __init register_security(struct security_operations *ops) 119 { 120 if (verify(ops)) { 121 printk(KERN_DEBUG "%s could not verify " 122 "security_operations structure.\n", __func__); 123 return -EINVAL; 124 } 125 126 if (security_ops != &default_security_ops) 127 return -EAGAIN; 128 129 security_ops = ops; 130 131 return 0; 132 } 133 134 /* Security operations */ 135 136 int security_ptrace_access_check(struct task_struct *child, unsigned int mode) 137 { 138 return security_ops->ptrace_access_check(child, mode); 139 } 140 141 int security_ptrace_traceme(struct task_struct *parent) 142 { 143 return security_ops->ptrace_traceme(parent); 144 } 145 146 int security_capget(struct task_struct *target, 147 kernel_cap_t *effective, 148 kernel_cap_t *inheritable, 149 kernel_cap_t *permitted) 150 { 151 return security_ops->capget(target, effective, inheritable, permitted); 152 } 153 154 int security_capset(struct cred *new, const struct cred *old, 155 const kernel_cap_t *effective, 156 const kernel_cap_t *inheritable, 157 const kernel_cap_t *permitted) 158 { 159 return security_ops->capset(new, old, 160 effective, inheritable, permitted); 161 } 162 163 int security_capable(const struct cred *cred, struct user_namespace *ns, 164 int cap) 165 { 166 return security_ops->capable(cred, ns, cap, SECURITY_CAP_AUDIT); 167 } 168 169 int security_capable_noaudit(const struct cred *cred, struct user_namespace *ns, 170 int cap) 171 { 172 return security_ops->capable(cred, ns, cap, SECURITY_CAP_NOAUDIT); 173 } 174 175 int security_quotactl(int cmds, int type, int id, struct super_block *sb) 176 { 177 return security_ops->quotactl(cmds, type, id, sb); 178 } 179 180 int security_quota_on(struct dentry *dentry) 181 { 182 return security_ops->quota_on(dentry); 183 } 184 185 int security_syslog(int type) 186 { 187 return security_ops->syslog(type); 188 } 189 190 int security_settime(const struct timespec *ts, const struct timezone *tz) 191 { 192 return security_ops->settime(ts, tz); 193 } 194 195 int security_vm_enough_memory_mm(struct mm_struct *mm, long pages) 196 { 197 return security_ops->vm_enough_memory(mm, pages); 198 } 199 200 int security_bprm_set_creds(struct linux_binprm *bprm) 201 { 202 return security_ops->bprm_set_creds(bprm); 203 } 204 205 int security_bprm_check(struct linux_binprm *bprm) 206 { 207 int ret; 208 209 ret = security_ops->bprm_check_security(bprm); 210 if (ret) 211 return ret; 212 return ima_bprm_check(bprm); 213 } 214 215 void security_bprm_committing_creds(struct linux_binprm *bprm) 216 { 217 security_ops->bprm_committing_creds(bprm); 218 } 219 220 void security_bprm_committed_creds(struct linux_binprm *bprm) 221 { 222 security_ops->bprm_committed_creds(bprm); 223 } 224 225 int security_bprm_secureexec(struct linux_binprm *bprm) 226 { 227 return security_ops->bprm_secureexec(bprm); 228 } 229 230 int security_sb_alloc(struct super_block *sb) 231 { 232 return security_ops->sb_alloc_security(sb); 233 } 234 235 void security_sb_free(struct super_block *sb) 236 { 237 security_ops->sb_free_security(sb); 238 } 239 240 int security_sb_copy_data(char *orig, char *copy) 241 { 242 return security_ops->sb_copy_data(orig, copy); 243 } 244 EXPORT_SYMBOL(security_sb_copy_data); 245 246 int security_sb_remount(struct super_block *sb, void *data) 247 { 248 return security_ops->sb_remount(sb, data); 249 } 250 251 int security_sb_kern_mount(struct super_block *sb, int flags, void *data) 252 { 253 return security_ops->sb_kern_mount(sb, flags, data); 254 } 255 256 int security_sb_show_options(struct seq_file *m, struct super_block *sb) 257 { 258 return security_ops->sb_show_options(m, sb); 259 } 260 261 int security_sb_statfs(struct dentry *dentry) 262 { 263 return security_ops->sb_statfs(dentry); 264 } 265 266 int security_sb_mount(char *dev_name, struct path *path, 267 char *type, unsigned long flags, void *data) 268 { 269 return security_ops->sb_mount(dev_name, path, type, flags, data); 270 } 271 272 int security_sb_umount(struct vfsmount *mnt, int flags) 273 { 274 return security_ops->sb_umount(mnt, flags); 275 } 276 277 int security_sb_pivotroot(struct path *old_path, struct path *new_path) 278 { 279 return security_ops->sb_pivotroot(old_path, new_path); 280 } 281 282 int security_sb_set_mnt_opts(struct super_block *sb, 283 struct security_mnt_opts *opts) 284 { 285 return security_ops->sb_set_mnt_opts(sb, opts); 286 } 287 EXPORT_SYMBOL(security_sb_set_mnt_opts); 288 289 void security_sb_clone_mnt_opts(const struct super_block *oldsb, 290 struct super_block *newsb) 291 { 292 security_ops->sb_clone_mnt_opts(oldsb, newsb); 293 } 294 EXPORT_SYMBOL(security_sb_clone_mnt_opts); 295 296 int security_sb_parse_opts_str(char *options, struct security_mnt_opts *opts) 297 { 298 return security_ops->sb_parse_opts_str(options, opts); 299 } 300 EXPORT_SYMBOL(security_sb_parse_opts_str); 301 302 int security_inode_alloc(struct inode *inode) 303 { 304 inode->i_security = NULL; 305 return security_ops->inode_alloc_security(inode); 306 } 307 308 void security_inode_free(struct inode *inode) 309 { 310 integrity_inode_free(inode); 311 security_ops->inode_free_security(inode); 312 } 313 314 int security_inode_init_security(struct inode *inode, struct inode *dir, 315 const struct qstr *qstr, 316 const initxattrs initxattrs, void *fs_data) 317 { 318 struct xattr new_xattrs[MAX_LSM_EVM_XATTR + 1]; 319 struct xattr *lsm_xattr, *evm_xattr, *xattr; 320 int ret; 321 322 if (unlikely(IS_PRIVATE(inode))) 323 return 0; 324 325 memset(new_xattrs, 0, sizeof new_xattrs); 326 if (!initxattrs) 327 return security_ops->inode_init_security(inode, dir, qstr, 328 NULL, NULL, NULL); 329 lsm_xattr = new_xattrs; 330 ret = security_ops->inode_init_security(inode, dir, qstr, 331 &lsm_xattr->name, 332 &lsm_xattr->value, 333 &lsm_xattr->value_len); 334 if (ret) 335 goto out; 336 337 evm_xattr = lsm_xattr + 1; 338 ret = evm_inode_init_security(inode, lsm_xattr, evm_xattr); 339 if (ret) 340 goto out; 341 ret = initxattrs(inode, new_xattrs, fs_data); 342 out: 343 for (xattr = new_xattrs; xattr->name != NULL; xattr++) { 344 kfree(xattr->name); 345 kfree(xattr->value); 346 } 347 return (ret == -EOPNOTSUPP) ? 0 : ret; 348 } 349 EXPORT_SYMBOL(security_inode_init_security); 350 351 int security_old_inode_init_security(struct inode *inode, struct inode *dir, 352 const struct qstr *qstr, char **name, 353 void **value, size_t *len) 354 { 355 if (unlikely(IS_PRIVATE(inode))) 356 return -EOPNOTSUPP; 357 return security_ops->inode_init_security(inode, dir, qstr, name, value, 358 len); 359 } 360 EXPORT_SYMBOL(security_old_inode_init_security); 361 362 #ifdef CONFIG_SECURITY_PATH 363 int security_path_mknod(struct path *dir, struct dentry *dentry, umode_t mode, 364 unsigned int dev) 365 { 366 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 367 return 0; 368 return security_ops->path_mknod(dir, dentry, mode, dev); 369 } 370 EXPORT_SYMBOL(security_path_mknod); 371 372 int security_path_mkdir(struct path *dir, struct dentry *dentry, umode_t mode) 373 { 374 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 375 return 0; 376 return security_ops->path_mkdir(dir, dentry, mode); 377 } 378 EXPORT_SYMBOL(security_path_mkdir); 379 380 int security_path_rmdir(struct path *dir, struct dentry *dentry) 381 { 382 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 383 return 0; 384 return security_ops->path_rmdir(dir, dentry); 385 } 386 387 int security_path_unlink(struct path *dir, struct dentry *dentry) 388 { 389 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 390 return 0; 391 return security_ops->path_unlink(dir, dentry); 392 } 393 EXPORT_SYMBOL(security_path_unlink); 394 395 int security_path_symlink(struct path *dir, struct dentry *dentry, 396 const char *old_name) 397 { 398 if (unlikely(IS_PRIVATE(dir->dentry->d_inode))) 399 return 0; 400 return security_ops->path_symlink(dir, dentry, old_name); 401 } 402 403 int security_path_link(struct dentry *old_dentry, struct path *new_dir, 404 struct dentry *new_dentry) 405 { 406 if (unlikely(IS_PRIVATE(old_dentry->d_inode))) 407 return 0; 408 return security_ops->path_link(old_dentry, new_dir, new_dentry); 409 } 410 411 int security_path_rename(struct path *old_dir, struct dentry *old_dentry, 412 struct path *new_dir, struct dentry *new_dentry) 413 { 414 if (unlikely(IS_PRIVATE(old_dentry->d_inode) || 415 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) 416 return 0; 417 return security_ops->path_rename(old_dir, old_dentry, new_dir, 418 new_dentry); 419 } 420 EXPORT_SYMBOL(security_path_rename); 421 422 int security_path_truncate(struct path *path) 423 { 424 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 425 return 0; 426 return security_ops->path_truncate(path); 427 } 428 429 int security_path_chmod(struct path *path, umode_t mode) 430 { 431 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 432 return 0; 433 return security_ops->path_chmod(path, mode); 434 } 435 436 int security_path_chown(struct path *path, uid_t uid, gid_t gid) 437 { 438 if (unlikely(IS_PRIVATE(path->dentry->d_inode))) 439 return 0; 440 return security_ops->path_chown(path, uid, gid); 441 } 442 443 int security_path_chroot(struct path *path) 444 { 445 return security_ops->path_chroot(path); 446 } 447 #endif 448 449 int security_inode_create(struct inode *dir, struct dentry *dentry, umode_t mode) 450 { 451 if (unlikely(IS_PRIVATE(dir))) 452 return 0; 453 return security_ops->inode_create(dir, dentry, mode); 454 } 455 EXPORT_SYMBOL_GPL(security_inode_create); 456 457 int security_inode_link(struct dentry *old_dentry, struct inode *dir, 458 struct dentry *new_dentry) 459 { 460 if (unlikely(IS_PRIVATE(old_dentry->d_inode))) 461 return 0; 462 return security_ops->inode_link(old_dentry, dir, new_dentry); 463 } 464 465 int security_inode_unlink(struct inode *dir, struct dentry *dentry) 466 { 467 if (unlikely(IS_PRIVATE(dentry->d_inode))) 468 return 0; 469 return security_ops->inode_unlink(dir, dentry); 470 } 471 472 int security_inode_symlink(struct inode *dir, struct dentry *dentry, 473 const char *old_name) 474 { 475 if (unlikely(IS_PRIVATE(dir))) 476 return 0; 477 return security_ops->inode_symlink(dir, dentry, old_name); 478 } 479 480 int security_inode_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode) 481 { 482 if (unlikely(IS_PRIVATE(dir))) 483 return 0; 484 return security_ops->inode_mkdir(dir, dentry, mode); 485 } 486 EXPORT_SYMBOL_GPL(security_inode_mkdir); 487 488 int security_inode_rmdir(struct inode *dir, struct dentry *dentry) 489 { 490 if (unlikely(IS_PRIVATE(dentry->d_inode))) 491 return 0; 492 return security_ops->inode_rmdir(dir, dentry); 493 } 494 495 int security_inode_mknod(struct inode *dir, struct dentry *dentry, umode_t mode, dev_t dev) 496 { 497 if (unlikely(IS_PRIVATE(dir))) 498 return 0; 499 return security_ops->inode_mknod(dir, dentry, mode, dev); 500 } 501 502 int security_inode_rename(struct inode *old_dir, struct dentry *old_dentry, 503 struct inode *new_dir, struct dentry *new_dentry) 504 { 505 if (unlikely(IS_PRIVATE(old_dentry->d_inode) || 506 (new_dentry->d_inode && IS_PRIVATE(new_dentry->d_inode)))) 507 return 0; 508 return security_ops->inode_rename(old_dir, old_dentry, 509 new_dir, new_dentry); 510 } 511 512 int security_inode_readlink(struct dentry *dentry) 513 { 514 if (unlikely(IS_PRIVATE(dentry->d_inode))) 515 return 0; 516 return security_ops->inode_readlink(dentry); 517 } 518 519 int security_inode_follow_link(struct dentry *dentry, struct nameidata *nd) 520 { 521 if (unlikely(IS_PRIVATE(dentry->d_inode))) 522 return 0; 523 return security_ops->inode_follow_link(dentry, nd); 524 } 525 526 int security_inode_permission(struct inode *inode, int mask) 527 { 528 if (unlikely(IS_PRIVATE(inode))) 529 return 0; 530 return security_ops->inode_permission(inode, mask); 531 } 532 533 int security_inode_setattr(struct dentry *dentry, struct iattr *attr) 534 { 535 int ret; 536 537 if (unlikely(IS_PRIVATE(dentry->d_inode))) 538 return 0; 539 ret = security_ops->inode_setattr(dentry, attr); 540 if (ret) 541 return ret; 542 return evm_inode_setattr(dentry, attr); 543 } 544 EXPORT_SYMBOL_GPL(security_inode_setattr); 545 546 int security_inode_getattr(struct vfsmount *mnt, struct dentry *dentry) 547 { 548 if (unlikely(IS_PRIVATE(dentry->d_inode))) 549 return 0; 550 return security_ops->inode_getattr(mnt, dentry); 551 } 552 553 int security_inode_setxattr(struct dentry *dentry, const char *name, 554 const void *value, size_t size, int flags) 555 { 556 int ret; 557 558 if (unlikely(IS_PRIVATE(dentry->d_inode))) 559 return 0; 560 ret = security_ops->inode_setxattr(dentry, name, value, size, flags); 561 if (ret) 562 return ret; 563 return evm_inode_setxattr(dentry, name, value, size); 564 } 565 566 void security_inode_post_setxattr(struct dentry *dentry, const char *name, 567 const void *value, size_t size, int flags) 568 { 569 if (unlikely(IS_PRIVATE(dentry->d_inode))) 570 return; 571 security_ops->inode_post_setxattr(dentry, name, value, size, flags); 572 evm_inode_post_setxattr(dentry, name, value, size); 573 } 574 575 int security_inode_getxattr(struct dentry *dentry, const char *name) 576 { 577 if (unlikely(IS_PRIVATE(dentry->d_inode))) 578 return 0; 579 return security_ops->inode_getxattr(dentry, name); 580 } 581 582 int security_inode_listxattr(struct dentry *dentry) 583 { 584 if (unlikely(IS_PRIVATE(dentry->d_inode))) 585 return 0; 586 return security_ops->inode_listxattr(dentry); 587 } 588 589 int security_inode_removexattr(struct dentry *dentry, const char *name) 590 { 591 int ret; 592 593 if (unlikely(IS_PRIVATE(dentry->d_inode))) 594 return 0; 595 ret = security_ops->inode_removexattr(dentry, name); 596 if (ret) 597 return ret; 598 return evm_inode_removexattr(dentry, name); 599 } 600 601 int security_inode_need_killpriv(struct dentry *dentry) 602 { 603 return security_ops->inode_need_killpriv(dentry); 604 } 605 606 int security_inode_killpriv(struct dentry *dentry) 607 { 608 return security_ops->inode_killpriv(dentry); 609 } 610 611 int security_inode_getsecurity(const struct inode *inode, const char *name, void **buffer, bool alloc) 612 { 613 if (unlikely(IS_PRIVATE(inode))) 614 return -EOPNOTSUPP; 615 return security_ops->inode_getsecurity(inode, name, buffer, alloc); 616 } 617 618 int security_inode_setsecurity(struct inode *inode, const char *name, const void *value, size_t size, int flags) 619 { 620 if (unlikely(IS_PRIVATE(inode))) 621 return -EOPNOTSUPP; 622 return security_ops->inode_setsecurity(inode, name, value, size, flags); 623 } 624 625 int security_inode_listsecurity(struct inode *inode, char *buffer, size_t buffer_size) 626 { 627 if (unlikely(IS_PRIVATE(inode))) 628 return 0; 629 return security_ops->inode_listsecurity(inode, buffer, buffer_size); 630 } 631 632 void security_inode_getsecid(const struct inode *inode, u32 *secid) 633 { 634 security_ops->inode_getsecid(inode, secid); 635 } 636 637 int security_file_permission(struct file *file, int mask) 638 { 639 int ret; 640 641 ret = security_ops->file_permission(file, mask); 642 if (ret) 643 return ret; 644 645 return fsnotify_perm(file, mask); 646 } 647 648 int security_file_alloc(struct file *file) 649 { 650 return security_ops->file_alloc_security(file); 651 } 652 653 void security_file_free(struct file *file) 654 { 655 security_ops->file_free_security(file); 656 } 657 658 int security_file_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 659 { 660 return security_ops->file_ioctl(file, cmd, arg); 661 } 662 663 static inline unsigned long mmap_prot(struct file *file, unsigned long prot) 664 { 665 /* 666 * Does we have PROT_READ and does the application expect 667 * it to imply PROT_EXEC? If not, nothing to talk about... 668 */ 669 if ((prot & (PROT_READ | PROT_EXEC)) != PROT_READ) 670 return prot; 671 if (!(current->personality & READ_IMPLIES_EXEC)) 672 return prot; 673 /* 674 * if that's an anonymous mapping, let it. 675 */ 676 if (!file) 677 return prot | PROT_EXEC; 678 /* 679 * ditto if it's not on noexec mount, except that on !MMU we need 680 * BDI_CAP_EXEC_MMAP (== VM_MAYEXEC) in this case 681 */ 682 if (!(file->f_path.mnt->mnt_flags & MNT_NOEXEC)) { 683 #ifndef CONFIG_MMU 684 unsigned long caps = 0; 685 struct address_space *mapping = file->f_mapping; 686 if (mapping && mapping->backing_dev_info) 687 caps = mapping->backing_dev_info->capabilities; 688 if (!(caps & BDI_CAP_EXEC_MAP)) 689 return prot; 690 #endif 691 return prot | PROT_EXEC; 692 } 693 /* anything on noexec mount won't get PROT_EXEC */ 694 return prot; 695 } 696 697 int security_mmap_file(struct file *file, unsigned long prot, 698 unsigned long flags) 699 { 700 int ret; 701 ret = security_ops->mmap_file(file, prot, 702 mmap_prot(file, prot), flags); 703 if (ret) 704 return ret; 705 return ima_file_mmap(file, prot); 706 } 707 708 int security_mmap_addr(unsigned long addr) 709 { 710 return security_ops->mmap_addr(addr); 711 } 712 713 int security_file_mprotect(struct vm_area_struct *vma, unsigned long reqprot, 714 unsigned long prot) 715 { 716 return security_ops->file_mprotect(vma, reqprot, prot); 717 } 718 719 int security_file_lock(struct file *file, unsigned int cmd) 720 { 721 return security_ops->file_lock(file, cmd); 722 } 723 724 int security_file_fcntl(struct file *file, unsigned int cmd, unsigned long arg) 725 { 726 return security_ops->file_fcntl(file, cmd, arg); 727 } 728 729 int security_file_set_fowner(struct file *file) 730 { 731 return security_ops->file_set_fowner(file); 732 } 733 734 int security_file_send_sigiotask(struct task_struct *tsk, 735 struct fown_struct *fown, int sig) 736 { 737 return security_ops->file_send_sigiotask(tsk, fown, sig); 738 } 739 740 int security_file_receive(struct file *file) 741 { 742 return security_ops->file_receive(file); 743 } 744 745 int security_file_open(struct file *file, const struct cred *cred) 746 { 747 int ret; 748 749 ret = security_ops->file_open(file, cred); 750 if (ret) 751 return ret; 752 753 return fsnotify_perm(file, MAY_OPEN); 754 } 755 756 int security_task_create(unsigned long clone_flags) 757 { 758 return security_ops->task_create(clone_flags); 759 } 760 761 void security_task_free(struct task_struct *task) 762 { 763 security_ops->task_free(task); 764 } 765 766 int security_cred_alloc_blank(struct cred *cred, gfp_t gfp) 767 { 768 return security_ops->cred_alloc_blank(cred, gfp); 769 } 770 771 void security_cred_free(struct cred *cred) 772 { 773 security_ops->cred_free(cred); 774 } 775 776 int security_prepare_creds(struct cred *new, const struct cred *old, gfp_t gfp) 777 { 778 return security_ops->cred_prepare(new, old, gfp); 779 } 780 781 void security_transfer_creds(struct cred *new, const struct cred *old) 782 { 783 security_ops->cred_transfer(new, old); 784 } 785 786 int security_kernel_act_as(struct cred *new, u32 secid) 787 { 788 return security_ops->kernel_act_as(new, secid); 789 } 790 791 int security_kernel_create_files_as(struct cred *new, struct inode *inode) 792 { 793 return security_ops->kernel_create_files_as(new, inode); 794 } 795 796 int security_kernel_module_request(char *kmod_name) 797 { 798 return security_ops->kernel_module_request(kmod_name); 799 } 800 801 int security_task_fix_setuid(struct cred *new, const struct cred *old, 802 int flags) 803 { 804 return security_ops->task_fix_setuid(new, old, flags); 805 } 806 807 int security_task_setpgid(struct task_struct *p, pid_t pgid) 808 { 809 return security_ops->task_setpgid(p, pgid); 810 } 811 812 int security_task_getpgid(struct task_struct *p) 813 { 814 return security_ops->task_getpgid(p); 815 } 816 817 int security_task_getsid(struct task_struct *p) 818 { 819 return security_ops->task_getsid(p); 820 } 821 822 void security_task_getsecid(struct task_struct *p, u32 *secid) 823 { 824 security_ops->task_getsecid(p, secid); 825 } 826 EXPORT_SYMBOL(security_task_getsecid); 827 828 int security_task_setnice(struct task_struct *p, int nice) 829 { 830 return security_ops->task_setnice(p, nice); 831 } 832 833 int security_task_setioprio(struct task_struct *p, int ioprio) 834 { 835 return security_ops->task_setioprio(p, ioprio); 836 } 837 838 int security_task_getioprio(struct task_struct *p) 839 { 840 return security_ops->task_getioprio(p); 841 } 842 843 int security_task_setrlimit(struct task_struct *p, unsigned int resource, 844 struct rlimit *new_rlim) 845 { 846 return security_ops->task_setrlimit(p, resource, new_rlim); 847 } 848 849 int security_task_setscheduler(struct task_struct *p) 850 { 851 return security_ops->task_setscheduler(p); 852 } 853 854 int security_task_getscheduler(struct task_struct *p) 855 { 856 return security_ops->task_getscheduler(p); 857 } 858 859 int security_task_movememory(struct task_struct *p) 860 { 861 return security_ops->task_movememory(p); 862 } 863 864 int security_task_kill(struct task_struct *p, struct siginfo *info, 865 int sig, u32 secid) 866 { 867 return security_ops->task_kill(p, info, sig, secid); 868 } 869 870 int security_task_wait(struct task_struct *p) 871 { 872 return security_ops->task_wait(p); 873 } 874 875 int security_task_prctl(int option, unsigned long arg2, unsigned long arg3, 876 unsigned long arg4, unsigned long arg5) 877 { 878 return security_ops->task_prctl(option, arg2, arg3, arg4, arg5); 879 } 880 881 void security_task_to_inode(struct task_struct *p, struct inode *inode) 882 { 883 security_ops->task_to_inode(p, inode); 884 } 885 886 int security_ipc_permission(struct kern_ipc_perm *ipcp, short flag) 887 { 888 return security_ops->ipc_permission(ipcp, flag); 889 } 890 891 void security_ipc_getsecid(struct kern_ipc_perm *ipcp, u32 *secid) 892 { 893 security_ops->ipc_getsecid(ipcp, secid); 894 } 895 896 int security_msg_msg_alloc(struct msg_msg *msg) 897 { 898 return security_ops->msg_msg_alloc_security(msg); 899 } 900 901 void security_msg_msg_free(struct msg_msg *msg) 902 { 903 security_ops->msg_msg_free_security(msg); 904 } 905 906 int security_msg_queue_alloc(struct msg_queue *msq) 907 { 908 return security_ops->msg_queue_alloc_security(msq); 909 } 910 911 void security_msg_queue_free(struct msg_queue *msq) 912 { 913 security_ops->msg_queue_free_security(msq); 914 } 915 916 int security_msg_queue_associate(struct msg_queue *msq, int msqflg) 917 { 918 return security_ops->msg_queue_associate(msq, msqflg); 919 } 920 921 int security_msg_queue_msgctl(struct msg_queue *msq, int cmd) 922 { 923 return security_ops->msg_queue_msgctl(msq, cmd); 924 } 925 926 int security_msg_queue_msgsnd(struct msg_queue *msq, 927 struct msg_msg *msg, int msqflg) 928 { 929 return security_ops->msg_queue_msgsnd(msq, msg, msqflg); 930 } 931 932 int security_msg_queue_msgrcv(struct msg_queue *msq, struct msg_msg *msg, 933 struct task_struct *target, long type, int mode) 934 { 935 return security_ops->msg_queue_msgrcv(msq, msg, target, type, mode); 936 } 937 938 int security_shm_alloc(struct shmid_kernel *shp) 939 { 940 return security_ops->shm_alloc_security(shp); 941 } 942 943 void security_shm_free(struct shmid_kernel *shp) 944 { 945 security_ops->shm_free_security(shp); 946 } 947 948 int security_shm_associate(struct shmid_kernel *shp, int shmflg) 949 { 950 return security_ops->shm_associate(shp, shmflg); 951 } 952 953 int security_shm_shmctl(struct shmid_kernel *shp, int cmd) 954 { 955 return security_ops->shm_shmctl(shp, cmd); 956 } 957 958 int security_shm_shmat(struct shmid_kernel *shp, char __user *shmaddr, int shmflg) 959 { 960 return security_ops->shm_shmat(shp, shmaddr, shmflg); 961 } 962 963 int security_sem_alloc(struct sem_array *sma) 964 { 965 return security_ops->sem_alloc_security(sma); 966 } 967 968 void security_sem_free(struct sem_array *sma) 969 { 970 security_ops->sem_free_security(sma); 971 } 972 973 int security_sem_associate(struct sem_array *sma, int semflg) 974 { 975 return security_ops->sem_associate(sma, semflg); 976 } 977 978 int security_sem_semctl(struct sem_array *sma, int cmd) 979 { 980 return security_ops->sem_semctl(sma, cmd); 981 } 982 983 int security_sem_semop(struct sem_array *sma, struct sembuf *sops, 984 unsigned nsops, int alter) 985 { 986 return security_ops->sem_semop(sma, sops, nsops, alter); 987 } 988 989 void security_d_instantiate(struct dentry *dentry, struct inode *inode) 990 { 991 if (unlikely(inode && IS_PRIVATE(inode))) 992 return; 993 security_ops->d_instantiate(dentry, inode); 994 } 995 EXPORT_SYMBOL(security_d_instantiate); 996 997 int security_getprocattr(struct task_struct *p, char *name, char **value) 998 { 999 return security_ops->getprocattr(p, name, value); 1000 } 1001 1002 int security_setprocattr(struct task_struct *p, char *name, void *value, size_t size) 1003 { 1004 return security_ops->setprocattr(p, name, value, size); 1005 } 1006 1007 int security_netlink_send(struct sock *sk, struct sk_buff *skb) 1008 { 1009 return security_ops->netlink_send(sk, skb); 1010 } 1011 1012 int security_secid_to_secctx(u32 secid, char **secdata, u32 *seclen) 1013 { 1014 return security_ops->secid_to_secctx(secid, secdata, seclen); 1015 } 1016 EXPORT_SYMBOL(security_secid_to_secctx); 1017 1018 int security_secctx_to_secid(const char *secdata, u32 seclen, u32 *secid) 1019 { 1020 return security_ops->secctx_to_secid(secdata, seclen, secid); 1021 } 1022 EXPORT_SYMBOL(security_secctx_to_secid); 1023 1024 void security_release_secctx(char *secdata, u32 seclen) 1025 { 1026 security_ops->release_secctx(secdata, seclen); 1027 } 1028 EXPORT_SYMBOL(security_release_secctx); 1029 1030 int security_inode_notifysecctx(struct inode *inode, void *ctx, u32 ctxlen) 1031 { 1032 return security_ops->inode_notifysecctx(inode, ctx, ctxlen); 1033 } 1034 EXPORT_SYMBOL(security_inode_notifysecctx); 1035 1036 int security_inode_setsecctx(struct dentry *dentry, void *ctx, u32 ctxlen) 1037 { 1038 return security_ops->inode_setsecctx(dentry, ctx, ctxlen); 1039 } 1040 EXPORT_SYMBOL(security_inode_setsecctx); 1041 1042 int security_inode_getsecctx(struct inode *inode, void **ctx, u32 *ctxlen) 1043 { 1044 return security_ops->inode_getsecctx(inode, ctx, ctxlen); 1045 } 1046 EXPORT_SYMBOL(security_inode_getsecctx); 1047 1048 #ifdef CONFIG_SECURITY_NETWORK 1049 1050 int security_unix_stream_connect(struct sock *sock, struct sock *other, struct sock *newsk) 1051 { 1052 return security_ops->unix_stream_connect(sock, other, newsk); 1053 } 1054 EXPORT_SYMBOL(security_unix_stream_connect); 1055 1056 int security_unix_may_send(struct socket *sock, struct socket *other) 1057 { 1058 return security_ops->unix_may_send(sock, other); 1059 } 1060 EXPORT_SYMBOL(security_unix_may_send); 1061 1062 int security_socket_create(int family, int type, int protocol, int kern) 1063 { 1064 return security_ops->socket_create(family, type, protocol, kern); 1065 } 1066 1067 int security_socket_post_create(struct socket *sock, int family, 1068 int type, int protocol, int kern) 1069 { 1070 return security_ops->socket_post_create(sock, family, type, 1071 protocol, kern); 1072 } 1073 1074 int security_socket_bind(struct socket *sock, struct sockaddr *address, int addrlen) 1075 { 1076 return security_ops->socket_bind(sock, address, addrlen); 1077 } 1078 1079 int security_socket_connect(struct socket *sock, struct sockaddr *address, int addrlen) 1080 { 1081 return security_ops->socket_connect(sock, address, addrlen); 1082 } 1083 1084 int security_socket_listen(struct socket *sock, int backlog) 1085 { 1086 return security_ops->socket_listen(sock, backlog); 1087 } 1088 1089 int security_socket_accept(struct socket *sock, struct socket *newsock) 1090 { 1091 return security_ops->socket_accept(sock, newsock); 1092 } 1093 1094 int security_socket_sendmsg(struct socket *sock, struct msghdr *msg, int size) 1095 { 1096 return security_ops->socket_sendmsg(sock, msg, size); 1097 } 1098 1099 int security_socket_recvmsg(struct socket *sock, struct msghdr *msg, 1100 int size, int flags) 1101 { 1102 return security_ops->socket_recvmsg(sock, msg, size, flags); 1103 } 1104 1105 int security_socket_getsockname(struct socket *sock) 1106 { 1107 return security_ops->socket_getsockname(sock); 1108 } 1109 1110 int security_socket_getpeername(struct socket *sock) 1111 { 1112 return security_ops->socket_getpeername(sock); 1113 } 1114 1115 int security_socket_getsockopt(struct socket *sock, int level, int optname) 1116 { 1117 return security_ops->socket_getsockopt(sock, level, optname); 1118 } 1119 1120 int security_socket_setsockopt(struct socket *sock, int level, int optname) 1121 { 1122 return security_ops->socket_setsockopt(sock, level, optname); 1123 } 1124 1125 int security_socket_shutdown(struct socket *sock, int how) 1126 { 1127 return security_ops->socket_shutdown(sock, how); 1128 } 1129 1130 int security_sock_rcv_skb(struct sock *sk, struct sk_buff *skb) 1131 { 1132 return security_ops->socket_sock_rcv_skb(sk, skb); 1133 } 1134 EXPORT_SYMBOL(security_sock_rcv_skb); 1135 1136 int security_socket_getpeersec_stream(struct socket *sock, char __user *optval, 1137 int __user *optlen, unsigned len) 1138 { 1139 return security_ops->socket_getpeersec_stream(sock, optval, optlen, len); 1140 } 1141 1142 int security_socket_getpeersec_dgram(struct socket *sock, struct sk_buff *skb, u32 *secid) 1143 { 1144 return security_ops->socket_getpeersec_dgram(sock, skb, secid); 1145 } 1146 EXPORT_SYMBOL(security_socket_getpeersec_dgram); 1147 1148 int security_sk_alloc(struct sock *sk, int family, gfp_t priority) 1149 { 1150 return security_ops->sk_alloc_security(sk, family, priority); 1151 } 1152 1153 void security_sk_free(struct sock *sk) 1154 { 1155 security_ops->sk_free_security(sk); 1156 } 1157 1158 void security_sk_clone(const struct sock *sk, struct sock *newsk) 1159 { 1160 security_ops->sk_clone_security(sk, newsk); 1161 } 1162 EXPORT_SYMBOL(security_sk_clone); 1163 1164 void security_sk_classify_flow(struct sock *sk, struct flowi *fl) 1165 { 1166 security_ops->sk_getsecid(sk, &fl->flowi_secid); 1167 } 1168 EXPORT_SYMBOL(security_sk_classify_flow); 1169 1170 void security_req_classify_flow(const struct request_sock *req, struct flowi *fl) 1171 { 1172 security_ops->req_classify_flow(req, fl); 1173 } 1174 EXPORT_SYMBOL(security_req_classify_flow); 1175 1176 void security_sock_graft(struct sock *sk, struct socket *parent) 1177 { 1178 security_ops->sock_graft(sk, parent); 1179 } 1180 EXPORT_SYMBOL(security_sock_graft); 1181 1182 int security_inet_conn_request(struct sock *sk, 1183 struct sk_buff *skb, struct request_sock *req) 1184 { 1185 return security_ops->inet_conn_request(sk, skb, req); 1186 } 1187 EXPORT_SYMBOL(security_inet_conn_request); 1188 1189 void security_inet_csk_clone(struct sock *newsk, 1190 const struct request_sock *req) 1191 { 1192 security_ops->inet_csk_clone(newsk, req); 1193 } 1194 1195 void security_inet_conn_established(struct sock *sk, 1196 struct sk_buff *skb) 1197 { 1198 security_ops->inet_conn_established(sk, skb); 1199 } 1200 1201 int security_secmark_relabel_packet(u32 secid) 1202 { 1203 return security_ops->secmark_relabel_packet(secid); 1204 } 1205 EXPORT_SYMBOL(security_secmark_relabel_packet); 1206 1207 void security_secmark_refcount_inc(void) 1208 { 1209 security_ops->secmark_refcount_inc(); 1210 } 1211 EXPORT_SYMBOL(security_secmark_refcount_inc); 1212 1213 void security_secmark_refcount_dec(void) 1214 { 1215 security_ops->secmark_refcount_dec(); 1216 } 1217 EXPORT_SYMBOL(security_secmark_refcount_dec); 1218 1219 int security_tun_dev_create(void) 1220 { 1221 return security_ops->tun_dev_create(); 1222 } 1223 EXPORT_SYMBOL(security_tun_dev_create); 1224 1225 void security_tun_dev_post_create(struct sock *sk) 1226 { 1227 return security_ops->tun_dev_post_create(sk); 1228 } 1229 EXPORT_SYMBOL(security_tun_dev_post_create); 1230 1231 int security_tun_dev_attach(struct sock *sk) 1232 { 1233 return security_ops->tun_dev_attach(sk); 1234 } 1235 EXPORT_SYMBOL(security_tun_dev_attach); 1236 1237 #endif /* CONFIG_SECURITY_NETWORK */ 1238 1239 #ifdef CONFIG_SECURITY_NETWORK_XFRM 1240 1241 int security_xfrm_policy_alloc(struct xfrm_sec_ctx **ctxp, struct xfrm_user_sec_ctx *sec_ctx) 1242 { 1243 return security_ops->xfrm_policy_alloc_security(ctxp, sec_ctx); 1244 } 1245 EXPORT_SYMBOL(security_xfrm_policy_alloc); 1246 1247 int security_xfrm_policy_clone(struct xfrm_sec_ctx *old_ctx, 1248 struct xfrm_sec_ctx **new_ctxp) 1249 { 1250 return security_ops->xfrm_policy_clone_security(old_ctx, new_ctxp); 1251 } 1252 1253 void security_xfrm_policy_free(struct xfrm_sec_ctx *ctx) 1254 { 1255 security_ops->xfrm_policy_free_security(ctx); 1256 } 1257 EXPORT_SYMBOL(security_xfrm_policy_free); 1258 1259 int security_xfrm_policy_delete(struct xfrm_sec_ctx *ctx) 1260 { 1261 return security_ops->xfrm_policy_delete_security(ctx); 1262 } 1263 1264 int security_xfrm_state_alloc(struct xfrm_state *x, struct xfrm_user_sec_ctx *sec_ctx) 1265 { 1266 return security_ops->xfrm_state_alloc_security(x, sec_ctx, 0); 1267 } 1268 EXPORT_SYMBOL(security_xfrm_state_alloc); 1269 1270 int security_xfrm_state_alloc_acquire(struct xfrm_state *x, 1271 struct xfrm_sec_ctx *polsec, u32 secid) 1272 { 1273 if (!polsec) 1274 return 0; 1275 /* 1276 * We want the context to be taken from secid which is usually 1277 * from the sock. 1278 */ 1279 return security_ops->xfrm_state_alloc_security(x, NULL, secid); 1280 } 1281 1282 int security_xfrm_state_delete(struct xfrm_state *x) 1283 { 1284 return security_ops->xfrm_state_delete_security(x); 1285 } 1286 EXPORT_SYMBOL(security_xfrm_state_delete); 1287 1288 void security_xfrm_state_free(struct xfrm_state *x) 1289 { 1290 security_ops->xfrm_state_free_security(x); 1291 } 1292 1293 int security_xfrm_policy_lookup(struct xfrm_sec_ctx *ctx, u32 fl_secid, u8 dir) 1294 { 1295 return security_ops->xfrm_policy_lookup(ctx, fl_secid, dir); 1296 } 1297 1298 int security_xfrm_state_pol_flow_match(struct xfrm_state *x, 1299 struct xfrm_policy *xp, 1300 const struct flowi *fl) 1301 { 1302 return security_ops->xfrm_state_pol_flow_match(x, xp, fl); 1303 } 1304 1305 int security_xfrm_decode_session(struct sk_buff *skb, u32 *secid) 1306 { 1307 return security_ops->xfrm_decode_session(skb, secid, 1); 1308 } 1309 1310 void security_skb_classify_flow(struct sk_buff *skb, struct flowi *fl) 1311 { 1312 int rc = security_ops->xfrm_decode_session(skb, &fl->flowi_secid, 0); 1313 1314 BUG_ON(rc); 1315 } 1316 EXPORT_SYMBOL(security_skb_classify_flow); 1317 1318 #endif /* CONFIG_SECURITY_NETWORK_XFRM */ 1319 1320 #ifdef CONFIG_KEYS 1321 1322 int security_key_alloc(struct key *key, const struct cred *cred, 1323 unsigned long flags) 1324 { 1325 return security_ops->key_alloc(key, cred, flags); 1326 } 1327 1328 void security_key_free(struct key *key) 1329 { 1330 security_ops->key_free(key); 1331 } 1332 1333 int security_key_permission(key_ref_t key_ref, 1334 const struct cred *cred, key_perm_t perm) 1335 { 1336 return security_ops->key_permission(key_ref, cred, perm); 1337 } 1338 1339 int security_key_getsecurity(struct key *key, char **_buffer) 1340 { 1341 return security_ops->key_getsecurity(key, _buffer); 1342 } 1343 1344 #endif /* CONFIG_KEYS */ 1345 1346 #ifdef CONFIG_AUDIT 1347 1348 int security_audit_rule_init(u32 field, u32 op, char *rulestr, void **lsmrule) 1349 { 1350 return security_ops->audit_rule_init(field, op, rulestr, lsmrule); 1351 } 1352 1353 int security_audit_rule_known(struct audit_krule *krule) 1354 { 1355 return security_ops->audit_rule_known(krule); 1356 } 1357 1358 void security_audit_rule_free(void *lsmrule) 1359 { 1360 security_ops->audit_rule_free(lsmrule); 1361 } 1362 1363 int security_audit_rule_match(u32 secid, u32 field, u32 op, void *lsmrule, 1364 struct audit_context *actx) 1365 { 1366 return security_ops->audit_rule_match(secid, field, op, lsmrule, actx); 1367 } 1368 1369 #endif /* CONFIG_AUDIT */ 1370