1 /*- 2 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 3 * Copyright (c) 2001, 2002 Networks Associates Technology, Inc. 4 * All rights reserved. 5 * 6 * This software was developed by Robert Watson for the TrustedBSD Project. 7 * 8 * This software was developed for the FreeBSD Project in part by Network 9 * Associates Laboratories, the Security Research Division of Network 10 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 11 * as part of the DARPA CHATS research program. 12 * 13 * Redistribution and use in source and binary forms, with or without 14 * modification, are permitted provided that the following conditions 15 * are met: 16 * 1. Redistributions of source code must retain the above copyright 17 * notice, this list of conditions and the following disclaimer. 18 * 2. Redistributions in binary form must reproduce the above copyright 19 * notice, this list of conditions and the following disclaimer in the 20 * documentation and/or other materials provided with the distribution. 21 * 22 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 * 34 * $FreeBSD$ 35 */ 36 37 /* 38 * Developed by the TrustedBSD Project. 39 * Generic mandatory access module that does nothing. 40 */ 41 42 #include <sys/types.h> 43 #include <sys/param.h> 44 #include <sys/acl.h> 45 #include <sys/conf.h> 46 #include <sys/extattr.h> 47 #include <sys/kernel.h> 48 #include <sys/mac.h> 49 #include <sys/mount.h> 50 #include <sys/proc.h> 51 #include <sys/systm.h> 52 #include <sys/sysproto.h> 53 #include <sys/sysent.h> 54 #include <sys/vnode.h> 55 #include <sys/file.h> 56 #include <sys/socket.h> 57 #include <sys/socketvar.h> 58 #include <sys/pipe.h> 59 #include <sys/sysctl.h> 60 61 #include <fs/devfs/devfs.h> 62 63 #include <net/bpfdesc.h> 64 #include <net/if.h> 65 #include <net/if_types.h> 66 #include <net/if_var.h> 67 68 #include <netinet/in.h> 69 #include <netinet/ip_var.h> 70 71 #include <vm/vm.h> 72 73 #include <sys/mac_policy.h> 74 75 SYSCTL_DECL(_security_mac); 76 77 SYSCTL_NODE(_security_mac, OID_AUTO, none, CTLFLAG_RW, 0, 78 "TrustedBSD mac_none policy controls"); 79 80 static int mac_none_enabled = 1; 81 SYSCTL_INT(_security_mac_none, OID_AUTO, enabled, CTLFLAG_RW, 82 &mac_none_enabled, 0, "Enforce none policy"); 83 84 /* 85 * Policy module operations. 86 */ 87 static void 88 mac_none_destroy(struct mac_policy_conf *conf) 89 { 90 91 } 92 93 static void 94 mac_none_init(struct mac_policy_conf *conf) 95 { 96 97 } 98 99 static int 100 mac_none_syscall(struct thread *td, int call, void *arg) 101 { 102 103 return (0); 104 } 105 106 /* 107 * Label operations. 108 */ 109 static void 110 mac_none_init_label(struct label *label) 111 { 112 113 } 114 115 static int 116 mac_none_init_label_waitcheck(struct label *label, int flag) 117 { 118 119 return (0); 120 } 121 122 static void 123 mac_none_destroy_label(struct label *label) 124 { 125 126 } 127 128 static int 129 mac_none_externalize_label(struct label *label, char *element_name, 130 char *element_data, size_t size, size_t *len, int *claimed) 131 { 132 133 return (0); 134 } 135 136 static int 137 mac_none_internalize_label(struct label *label, char *element_name, 138 char *element_data, int *claimed) 139 { 140 141 return (0); 142 } 143 144 /* 145 * Labeling event operations: file system objects, and things that look 146 * a lot like file system objects. 147 */ 148 static void 149 mac_none_associate_vnode_devfs(struct mount *mp, struct label *fslabel, 150 struct devfs_dirent *de, struct label *delabel, struct vnode *vp, 151 struct label *vlabel) 152 { 153 154 } 155 156 static int 157 mac_none_associate_vnode_extattr(struct mount *mp, struct label *fslabel, 158 struct vnode *vp, struct label *vlabel) 159 { 160 161 return (0); 162 } 163 164 static void 165 mac_none_associate_vnode_singlelabel(struct mount *mp, 166 struct label *fslabel, struct vnode *vp, struct label *vlabel) 167 { 168 169 } 170 171 static void 172 mac_none_create_devfs_device(struct mount *mp, dev_t dev, 173 struct devfs_dirent *devfs_dirent, struct label *label) 174 { 175 176 } 177 178 static void 179 mac_none_create_devfs_directory(struct mount *mp, char *dirname, 180 int dirnamelen, struct devfs_dirent *devfs_dirent, struct label *label) 181 { 182 183 } 184 185 static void 186 mac_none_create_devfs_symlink(struct ucred *cred, struct mount *mp, 187 struct devfs_dirent *dd, struct label *ddlabel, struct devfs_dirent *de, 188 struct label *delabel) 189 { 190 191 } 192 193 static int 194 mac_none_create_vnode_extattr(struct ucred *cred, struct mount *mp, 195 struct label *fslabel, struct vnode *dvp, struct label *dlabel, 196 struct vnode *vp, struct label *vlabel, struct componentname *cnp) 197 { 198 199 return (0); 200 } 201 202 static void 203 mac_none_create_mount(struct ucred *cred, struct mount *mp, 204 struct label *mntlabel, struct label *fslabel) 205 { 206 207 } 208 209 static void 210 mac_none_create_root_mount(struct ucred *cred, struct mount *mp, 211 struct label *mntlabel, struct label *fslabel) 212 { 213 214 } 215 216 static void 217 mac_none_relabel_vnode(struct ucred *cred, struct vnode *vp, 218 struct label *vnodelabel, struct label *label) 219 { 220 221 } 222 223 static int 224 mac_none_setlabel_vnode_extattr(struct ucred *cred, struct vnode *vp, 225 struct label *vlabel, struct label *intlabel) 226 { 227 228 return (0); 229 } 230 231 static void 232 mac_none_update_devfsdirent(struct mount *mp, 233 struct devfs_dirent *devfs_dirent, struct label *direntlabel, 234 struct vnode *vp, struct label *vnodelabel) 235 { 236 237 } 238 239 /* 240 * Labeling event operations: IPC object. 241 */ 242 static void 243 mac_none_create_mbuf_from_socket(struct socket *so, struct label *socketlabel, 244 struct mbuf *m, struct label *mbuflabel) 245 { 246 247 } 248 249 static void 250 mac_none_create_socket(struct ucred *cred, struct socket *socket, 251 struct label *socketlabel) 252 { 253 254 } 255 256 static void 257 mac_none_create_pipe(struct ucred *cred, struct pipe *pipe, 258 struct label *pipelabel) 259 { 260 261 } 262 263 static void 264 mac_none_create_socket_from_socket(struct socket *oldsocket, 265 struct label *oldsocketlabel, struct socket *newsocket, 266 struct label *newsocketlabel) 267 { 268 269 } 270 271 static void 272 mac_none_relabel_socket(struct ucred *cred, struct socket *socket, 273 struct label *socketlabel, struct label *newlabel) 274 { 275 276 } 277 278 static void 279 mac_none_relabel_pipe(struct ucred *cred, struct pipe *pipe, 280 struct label *pipelabel, struct label *newlabel) 281 { 282 283 } 284 285 static void 286 mac_none_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct label *mbuflabel, 287 struct socket *socket, struct label *socketpeerlabel) 288 { 289 290 } 291 292 static void 293 mac_none_set_socket_peer_from_socket(struct socket *oldsocket, 294 struct label *oldsocketlabel, struct socket *newsocket, 295 struct label *newsocketpeerlabel) 296 { 297 298 } 299 300 /* 301 * Labeling event operations: network objects. 302 */ 303 static void 304 mac_none_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d, 305 struct label *bpflabel) 306 { 307 308 } 309 310 static void 311 mac_none_create_datagram_from_ipq(struct ipq *ipq, struct label *ipqlabel, 312 struct mbuf *datagram, struct label *datagramlabel) 313 { 314 315 } 316 317 static void 318 mac_none_create_fragment(struct mbuf *datagram, struct label *datagramlabel, 319 struct mbuf *fragment, struct label *fragmentlabel) 320 { 321 322 } 323 324 static void 325 mac_none_create_ifnet(struct ifnet *ifnet, struct label *ifnetlabel) 326 { 327 328 } 329 330 static void 331 mac_none_create_ipq(struct mbuf *fragment, struct label *fragmentlabel, 332 struct ipq *ipq, struct label *ipqlabel) 333 { 334 335 } 336 337 static void 338 mac_none_create_mbuf_from_mbuf(struct mbuf *oldmbuf, 339 struct label *oldmbuflabel, struct mbuf *newmbuf, 340 struct label *newmbuflabel) 341 { 342 343 } 344 345 static void 346 mac_none_create_mbuf_linklayer(struct ifnet *ifnet, struct label *ifnetlabel, 347 struct mbuf *mbuf, struct label *mbuflabel) 348 { 349 350 } 351 352 static void 353 mac_none_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct label *bpflabel, 354 struct mbuf *mbuf, struct label *mbuflabel) 355 { 356 357 } 358 359 static void 360 mac_none_create_mbuf_from_ifnet(struct ifnet *ifnet, struct label *ifnetlabel, 361 struct mbuf *m, struct label *mbuflabel) 362 { 363 364 } 365 366 static void 367 mac_none_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 368 struct label *oldmbuflabel, struct ifnet *ifnet, struct label *ifnetlabel, 369 struct mbuf *newmbuf, struct label *newmbuflabel) 370 { 371 372 } 373 374 static void 375 mac_none_create_mbuf_netlayer(struct mbuf *oldmbuf, 376 struct label *oldmbuflabel, struct mbuf *newmbuf, struct label *newmbuflabel) 377 { 378 379 } 380 381 static int 382 mac_none_fragment_match(struct mbuf *fragment, struct label *fragmentlabel, 383 struct ipq *ipq, struct label *ipqlabel) 384 { 385 386 return (1); 387 } 388 389 static void 390 mac_none_relabel_ifnet(struct ucred *cred, struct ifnet *ifnet, 391 struct label *ifnetlabel, struct label *newlabel) 392 { 393 394 } 395 396 static void 397 mac_none_update_ipq(struct mbuf *fragment, struct label *fragmentlabel, 398 struct ipq *ipq, struct label *ipqlabel) 399 { 400 401 } 402 403 /* 404 * Labeling event operations: processes. 405 */ 406 static void 407 mac_none_create_cred(struct ucred *cred_parent, struct ucred *cred_child) 408 { 409 410 } 411 412 static void 413 mac_none_execve_transition(struct ucred *old, struct ucred *new, 414 struct vnode *vp, struct label *vnodelabel, 415 struct label *interpvnodelabel, struct image_params *imgp, 416 struct label *execlabel) 417 { 418 419 } 420 421 static int 422 mac_none_execve_will_transition(struct ucred *old, struct vnode *vp, 423 struct label *vnodelabel, struct label *interpvnodelabel, 424 struct image_params *imgp, struct label *execlabel) 425 { 426 427 return (0); 428 } 429 430 static void 431 mac_none_create_proc0(struct ucred *cred) 432 { 433 434 } 435 436 static void 437 mac_none_create_proc1(struct ucred *cred) 438 { 439 440 } 441 442 static void 443 mac_none_relabel_cred(struct ucred *cred, struct label *newlabel) 444 { 445 446 } 447 448 static void 449 mac_none_thread_userret(struct thread *td) 450 { 451 452 } 453 454 /* 455 * Access control checks. 456 */ 457 static int 458 mac_none_check_bpfdesc_receive(struct bpf_d *bpf_d, struct label *bpflabel, 459 struct ifnet *ifnet, struct label *ifnet_label) 460 { 461 462 return (0); 463 } 464 465 static int 466 mac_none_check_cred_relabel(struct ucred *cred, struct label *newlabel) 467 { 468 469 return (0); 470 } 471 472 static int 473 mac_none_check_cred_visible(struct ucred *u1, struct ucred *u2) 474 { 475 476 return (0); 477 } 478 479 static int 480 mac_none_check_ifnet_relabel(struct ucred *cred, struct ifnet *ifnet, 481 struct label *ifnetlabel, struct label *newlabel) 482 { 483 484 return (0); 485 } 486 487 static int 488 mac_none_check_ifnet_transmit(struct ifnet *ifnet, struct label *ifnetlabel, 489 struct mbuf *m, struct label *mbuflabel) 490 { 491 492 return (0); 493 } 494 495 static int 496 mac_none_check_kenv_dump(struct ucred *cred) 497 { 498 499 return (0); 500 } 501 502 static int 503 mac_none_check_kenv_get(struct ucred *cred, char *name) 504 { 505 506 return (0); 507 } 508 509 static int 510 mac_none_check_kenv_set(struct ucred *cred, char *name, char *value) 511 { 512 513 return (0); 514 } 515 516 static int 517 mac_none_check_kenv_unset(struct ucred *cred, char *name) 518 { 519 520 return (0); 521 } 522 523 static int 524 mac_none_check_kld_load(struct ucred *cred, struct vnode *vp, 525 struct label *vlabel) 526 { 527 528 return (0); 529 } 530 531 static int 532 mac_none_check_kld_stat(struct ucred *cred) 533 { 534 535 return (0); 536 } 537 538 static int 539 mac_none_check_kld_unload(struct ucred *cred) 540 { 541 542 return (0); 543 } 544 545 static int 546 mac_none_check_mount_stat(struct ucred *cred, struct mount *mp, 547 struct label *mntlabel) 548 { 549 550 return (0); 551 } 552 553 static int 554 mac_none_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, 555 struct label *pipelabel, unsigned long cmd, void /* caddr_t */ *data) 556 { 557 558 return (0); 559 } 560 561 static int 562 mac_none_check_pipe_poll(struct ucred *cred, struct pipe *pipe, 563 struct label *pipelabel) 564 { 565 566 return (0); 567 } 568 569 static int 570 mac_none_check_pipe_read(struct ucred *cred, struct pipe *pipe, 571 struct label *pipelabel) 572 { 573 574 return (0); 575 } 576 577 static int 578 mac_none_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 579 struct label *pipelabel, struct label *newlabel) 580 { 581 582 return (0); 583 } 584 585 static int 586 mac_none_check_pipe_stat(struct ucred *cred, struct pipe *pipe, 587 struct label *pipelabel) 588 { 589 590 return (0); 591 } 592 593 static int 594 mac_none_check_pipe_write(struct ucred *cred, struct pipe *pipe, 595 struct label *pipelabel) 596 { 597 598 return (0); 599 } 600 601 static int 602 mac_none_check_proc_debug(struct ucred *cred, struct proc *proc) 603 { 604 605 return (0); 606 } 607 608 static int 609 mac_none_check_proc_sched(struct ucred *cred, struct proc *proc) 610 { 611 612 return (0); 613 } 614 615 static int 616 mac_none_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 617 { 618 619 return (0); 620 } 621 622 static int 623 mac_none_check_socket_bind(struct ucred *cred, struct socket *socket, 624 struct label *socketlabel, struct sockaddr *sockaddr) 625 { 626 627 return (0); 628 } 629 630 static int 631 mac_none_check_socket_connect(struct ucred *cred, struct socket *socket, 632 struct label *socketlabel, struct sockaddr *sockaddr) 633 { 634 635 return (0); 636 } 637 638 static int 639 mac_none_check_socket_deliver(struct socket *so, struct label *socketlabel, 640 struct mbuf *m, struct label *mbuflabel) 641 { 642 643 return (0); 644 } 645 646 static int 647 mac_none_check_socket_listen(struct ucred *cred, struct socket *so, 648 struct label *socketlabel) 649 { 650 651 return (0); 652 } 653 654 static int 655 mac_none_check_socket_relabel(struct ucred *cred, struct socket *socket, 656 struct label *socketlabel, struct label *newlabel) 657 { 658 659 return (0); 660 } 661 662 static int 663 mac_none_check_socket_visible(struct ucred *cred, struct socket *socket, 664 struct label *socketlabel) 665 { 666 667 return (0); 668 } 669 670 static int 671 mac_none_check_sysarch_ioperm(struct ucred *cred) 672 { 673 674 return (0); 675 } 676 677 static int 678 mac_none_check_system_acct(struct ucred *cred, struct vnode *vp, 679 struct label *vlabel) 680 { 681 682 return (0); 683 } 684 685 static int 686 mac_none_check_system_reboot(struct ucred *cred, int how) 687 { 688 689 return (0); 690 } 691 692 static int 693 mac_none_check_system_settime(struct ucred *cred) 694 { 695 696 return (0); 697 } 698 699 static int 700 mac_none_check_system_swapon(struct ucred *cred, struct vnode *vp, 701 struct label *label) 702 { 703 704 return (0); 705 } 706 707 static int 708 mac_none_check_system_swapoff(struct ucred *cred, struct vnode *vp, 709 struct label *label) 710 { 711 712 return (0); 713 } 714 715 static int 716 mac_none_check_system_sysctl(struct ucred *cred, int *name, u_int namelen, 717 void *old, size_t *oldlenp, int inkernel, void *new, size_t newlen) 718 { 719 720 return (0); 721 } 722 723 static int 724 mac_none_check_vnode_access(struct ucred *cred, struct vnode *vp, 725 struct label *label, int acc_mode) 726 { 727 728 return (0); 729 } 730 731 static int 732 mac_none_check_vnode_chdir(struct ucred *cred, struct vnode *dvp, 733 struct label *dlabel) 734 { 735 736 return (0); 737 } 738 739 static int 740 mac_none_check_vnode_chroot(struct ucred *cred, struct vnode *dvp, 741 struct label *dlabel) 742 { 743 744 return (0); 745 } 746 747 static int 748 mac_none_check_vnode_create(struct ucred *cred, struct vnode *dvp, 749 struct label *dlabel, struct componentname *cnp, struct vattr *vap) 750 { 751 752 return (0); 753 } 754 755 static int 756 mac_none_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 757 struct label *dlabel, struct vnode *vp, struct label *label, 758 struct componentname *cnp) 759 { 760 761 return (0); 762 } 763 764 static int 765 mac_none_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 766 struct label *label, acl_type_t type) 767 { 768 769 return (0); 770 } 771 772 static int 773 mac_none_check_vnode_exec(struct ucred *cred, struct vnode *vp, 774 struct label *label, struct image_params *imgp, 775 struct label *execlabel) 776 { 777 778 return (0); 779 } 780 781 static int 782 mac_none_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 783 struct label *label, acl_type_t type) 784 { 785 786 return (0); 787 } 788 789 static int 790 mac_none_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 791 struct label *label, int attrnamespace, const char *name, struct uio *uio) 792 { 793 794 return (0); 795 } 796 797 static int 798 mac_none_check_vnode_link(struct ucred *cred, struct vnode *dvp, 799 struct label *dlabel, struct vnode *vp, struct label *label, 800 struct componentname *cnp) 801 { 802 803 return (0); 804 } 805 806 static int 807 mac_none_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 808 struct label *dlabel, struct componentname *cnp) 809 { 810 811 return (0); 812 } 813 814 static int 815 mac_none_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 816 struct label *label, int prot) 817 { 818 819 return (0); 820 } 821 822 static int 823 mac_none_check_vnode_mprotect(struct ucred *cred, struct vnode *vp, 824 struct label *label, int prot) 825 { 826 827 return (0); 828 } 829 830 static int 831 mac_none_check_vnode_open(struct ucred *cred, struct vnode *vp, 832 struct label *filelabel, int acc_mode) 833 { 834 835 return (0); 836 } 837 838 static int 839 mac_none_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred, 840 struct vnode *vp, struct label *label) 841 { 842 843 return (0); 844 } 845 846 static int 847 mac_none_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred, 848 struct vnode *vp, struct label *label) 849 { 850 851 return (0); 852 } 853 854 static int 855 mac_none_check_vnode_readdir(struct ucred *cred, struct vnode *vp, 856 struct label *dlabel) 857 { 858 859 return (0); 860 } 861 862 static int 863 mac_none_check_vnode_readlink(struct ucred *cred, struct vnode *vp, 864 struct label *vnodelabel) 865 { 866 867 return (0); 868 } 869 870 static int 871 mac_none_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 872 struct label *vnodelabel, struct label *newlabel) 873 { 874 875 return (0); 876 } 877 878 static int 879 mac_none_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 880 struct label *dlabel, struct vnode *vp, struct label *label, 881 struct componentname *cnp) 882 { 883 884 return (0); 885 } 886 887 static int 888 mac_none_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 889 struct label *dlabel, struct vnode *vp, struct label *label, int samedir, 890 struct componentname *cnp) 891 { 892 893 return (0); 894 } 895 896 static int 897 mac_none_check_vnode_revoke(struct ucred *cred, struct vnode *vp, 898 struct label *label) 899 { 900 901 return (0); 902 } 903 904 static int 905 mac_none_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 906 struct label *label, acl_type_t type, struct acl *acl) 907 { 908 909 return (0); 910 } 911 912 static int 913 mac_none_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 914 struct label *label, int attrnamespace, const char *name, struct uio *uio) 915 { 916 917 return (0); 918 } 919 920 static int 921 mac_none_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 922 struct label *label, u_long flags) 923 { 924 925 return (0); 926 } 927 928 static int 929 mac_none_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 930 struct label *label, mode_t mode) 931 { 932 933 return (0); 934 } 935 936 static int 937 mac_none_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 938 struct label *label, uid_t uid, gid_t gid) 939 { 940 941 return (0); 942 } 943 944 static int 945 mac_none_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 946 struct label *label, struct timespec atime, struct timespec mtime) 947 { 948 949 return (0); 950 } 951 952 static int 953 mac_none_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred, 954 struct vnode *vp, struct label *label) 955 { 956 957 return (0); 958 } 959 960 static int 961 mac_none_check_vnode_write(struct ucred *active_cred, 962 struct ucred *file_cred, struct vnode *vp, struct label *label) 963 { 964 965 return (0); 966 } 967 968 static struct mac_policy_ops mac_none_ops = 969 { 970 .mpo_destroy = mac_none_destroy, 971 .mpo_init = mac_none_init, 972 .mpo_syscall = mac_none_syscall, 973 .mpo_init_bpfdesc_label = mac_none_init_label, 974 .mpo_init_cred_label = mac_none_init_label, 975 .mpo_init_devfsdirent_label = mac_none_init_label, 976 .mpo_init_ifnet_label = mac_none_init_label, 977 .mpo_init_ipq_label = mac_none_init_label_waitcheck, 978 .mpo_init_mbuf_label = mac_none_init_label_waitcheck, 979 .mpo_init_mount_label = mac_none_init_label, 980 .mpo_init_mount_fs_label = mac_none_init_label, 981 .mpo_init_pipe_label = mac_none_init_label, 982 .mpo_init_socket_label = mac_none_init_label_waitcheck, 983 .mpo_init_socket_peer_label = mac_none_init_label_waitcheck, 984 .mpo_init_vnode_label = mac_none_init_label, 985 .mpo_destroy_bpfdesc_label = mac_none_destroy_label, 986 .mpo_destroy_cred_label = mac_none_destroy_label, 987 .mpo_destroy_devfsdirent_label = mac_none_destroy_label, 988 .mpo_destroy_ifnet_label = mac_none_destroy_label, 989 .mpo_destroy_ipq_label = mac_none_destroy_label, 990 .mpo_destroy_mbuf_label = mac_none_destroy_label, 991 .mpo_destroy_mount_label = mac_none_destroy_label, 992 .mpo_destroy_mount_fs_label = mac_none_destroy_label, 993 .mpo_destroy_pipe_label = mac_none_destroy_label, 994 .mpo_destroy_socket_label = mac_none_destroy_label, 995 .mpo_destroy_socket_peer_label = mac_none_destroy_label, 996 .mpo_destroy_vnode_label = mac_none_destroy_label, 997 .mpo_externalize_cred_label = mac_none_externalize_label, 998 .mpo_externalize_ifnet_label = mac_none_externalize_label, 999 .mpo_externalize_pipe_label = mac_none_externalize_label, 1000 .mpo_externalize_socket_label = mac_none_externalize_label, 1001 .mpo_externalize_socket_peer_label = mac_none_externalize_label, 1002 .mpo_externalize_vnode_label = mac_none_externalize_label, 1003 .mpo_internalize_cred_label = mac_none_internalize_label, 1004 .mpo_internalize_ifnet_label = mac_none_internalize_label, 1005 .mpo_internalize_pipe_label = mac_none_internalize_label, 1006 .mpo_internalize_socket_label = mac_none_internalize_label, 1007 .mpo_internalize_vnode_label = mac_none_internalize_label, 1008 .mpo_associate_vnode_devfs = mac_none_associate_vnode_devfs, 1009 .mpo_associate_vnode_extattr = mac_none_associate_vnode_extattr, 1010 .mpo_associate_vnode_singlelabel = mac_none_associate_vnode_singlelabel, 1011 .mpo_create_devfs_device = mac_none_create_devfs_device, 1012 .mpo_create_devfs_directory = mac_none_create_devfs_directory, 1013 .mpo_create_devfs_symlink = mac_none_create_devfs_symlink, 1014 .mpo_create_vnode_extattr = mac_none_create_vnode_extattr, 1015 .mpo_create_mount = mac_none_create_mount, 1016 .mpo_create_root_mount = mac_none_create_root_mount, 1017 .mpo_relabel_vnode = mac_none_relabel_vnode, 1018 .mpo_setlabel_vnode_extattr = mac_none_setlabel_vnode_extattr, 1019 .mpo_update_devfsdirent = mac_none_update_devfsdirent, 1020 .mpo_create_mbuf_from_socket = mac_none_create_mbuf_from_socket, 1021 .mpo_create_pipe = mac_none_create_pipe, 1022 .mpo_create_socket = mac_none_create_socket, 1023 .mpo_create_socket_from_socket = mac_none_create_socket_from_socket, 1024 .mpo_relabel_pipe = mac_none_relabel_pipe, 1025 .mpo_relabel_socket = mac_none_relabel_socket, 1026 .mpo_set_socket_peer_from_mbuf = mac_none_set_socket_peer_from_mbuf, 1027 .mpo_set_socket_peer_from_socket = mac_none_set_socket_peer_from_socket, 1028 .mpo_create_bpfdesc = mac_none_create_bpfdesc, 1029 .mpo_create_ifnet = mac_none_create_ifnet, 1030 .mpo_create_ipq = mac_none_create_ipq, 1031 .mpo_create_datagram_from_ipq = mac_none_create_datagram_from_ipq, 1032 .mpo_create_fragment = mac_none_create_fragment, 1033 .mpo_create_ipq = mac_none_create_ipq, 1034 .mpo_create_mbuf_from_mbuf = mac_none_create_mbuf_from_mbuf, 1035 .mpo_create_mbuf_linklayer = mac_none_create_mbuf_linklayer, 1036 .mpo_create_mbuf_from_bpfdesc = mac_none_create_mbuf_from_bpfdesc, 1037 .mpo_create_mbuf_from_ifnet = mac_none_create_mbuf_from_ifnet, 1038 .mpo_create_mbuf_multicast_encap = mac_none_create_mbuf_multicast_encap, 1039 .mpo_create_mbuf_netlayer = mac_none_create_mbuf_netlayer, 1040 .mpo_fragment_match = mac_none_fragment_match, 1041 .mpo_relabel_ifnet = mac_none_relabel_ifnet, 1042 .mpo_update_ipq = mac_none_update_ipq, 1043 .mpo_create_cred = mac_none_create_cred, 1044 .mpo_execve_transition = mac_none_execve_transition, 1045 .mpo_execve_will_transition = mac_none_execve_will_transition, 1046 .mpo_create_proc0 = mac_none_create_proc0, 1047 .mpo_create_proc1 = mac_none_create_proc1, 1048 .mpo_relabel_cred = mac_none_relabel_cred, 1049 .mpo_thread_userret = mac_none_thread_userret, 1050 .mpo_check_bpfdesc_receive = mac_none_check_bpfdesc_receive, 1051 .mpo_check_cred_relabel = mac_none_check_cred_relabel, 1052 .mpo_check_cred_visible = mac_none_check_cred_visible, 1053 .mpo_check_ifnet_relabel = mac_none_check_ifnet_relabel, 1054 .mpo_check_ifnet_transmit = mac_none_check_ifnet_transmit, 1055 .mpo_check_kenv_dump = mac_none_check_kenv_dump, 1056 .mpo_check_kenv_get = mac_none_check_kenv_get, 1057 .mpo_check_kenv_set = mac_none_check_kenv_set, 1058 .mpo_check_kenv_unset = mac_none_check_kenv_unset, 1059 .mpo_check_kld_load = mac_none_check_kld_load, 1060 .mpo_check_kld_stat = mac_none_check_kld_stat, 1061 .mpo_check_kld_unload = mac_none_check_kld_unload, 1062 .mpo_check_mount_stat = mac_none_check_mount_stat, 1063 .mpo_check_pipe_ioctl = mac_none_check_pipe_ioctl, 1064 .mpo_check_pipe_poll = mac_none_check_pipe_poll, 1065 .mpo_check_pipe_read = mac_none_check_pipe_read, 1066 .mpo_check_pipe_relabel = mac_none_check_pipe_relabel, 1067 .mpo_check_pipe_stat = mac_none_check_pipe_stat, 1068 .mpo_check_pipe_write = mac_none_check_pipe_write, 1069 .mpo_check_proc_debug = mac_none_check_proc_debug, 1070 .mpo_check_proc_sched = mac_none_check_proc_sched, 1071 .mpo_check_proc_signal = mac_none_check_proc_signal, 1072 .mpo_check_socket_bind = mac_none_check_socket_bind, 1073 .mpo_check_socket_connect = mac_none_check_socket_connect, 1074 .mpo_check_socket_deliver = mac_none_check_socket_deliver, 1075 .mpo_check_socket_listen = mac_none_check_socket_listen, 1076 .mpo_check_socket_relabel = mac_none_check_socket_relabel, 1077 .mpo_check_socket_visible = mac_none_check_socket_visible, 1078 .mpo_check_sysarch_ioperm = mac_none_check_sysarch_ioperm, 1079 .mpo_check_system_acct = mac_none_check_system_acct, 1080 .mpo_check_system_reboot = mac_none_check_system_reboot, 1081 .mpo_check_system_settime = mac_none_check_system_settime, 1082 .mpo_check_system_swapon = mac_none_check_system_swapon, 1083 .mpo_check_system_swapoff = mac_none_check_system_swapoff, 1084 .mpo_check_system_sysctl = mac_none_check_system_sysctl, 1085 .mpo_check_vnode_access = mac_none_check_vnode_access, 1086 .mpo_check_vnode_chdir = mac_none_check_vnode_chdir, 1087 .mpo_check_vnode_chroot = mac_none_check_vnode_chroot, 1088 .mpo_check_vnode_create = mac_none_check_vnode_create, 1089 .mpo_check_vnode_delete = mac_none_check_vnode_delete, 1090 .mpo_check_vnode_deleteacl = mac_none_check_vnode_deleteacl, 1091 .mpo_check_vnode_exec = mac_none_check_vnode_exec, 1092 .mpo_check_vnode_getacl = mac_none_check_vnode_getacl, 1093 .mpo_check_vnode_getextattr = mac_none_check_vnode_getextattr, 1094 .mpo_check_vnode_link = mac_none_check_vnode_link, 1095 .mpo_check_vnode_lookup = mac_none_check_vnode_lookup, 1096 .mpo_check_vnode_mmap = mac_none_check_vnode_mmap, 1097 .mpo_check_vnode_mprotect = mac_none_check_vnode_mprotect, 1098 .mpo_check_vnode_open = mac_none_check_vnode_open, 1099 .mpo_check_vnode_poll = mac_none_check_vnode_poll, 1100 .mpo_check_vnode_read = mac_none_check_vnode_read, 1101 .mpo_check_vnode_readdir = mac_none_check_vnode_readdir, 1102 .mpo_check_vnode_readlink = mac_none_check_vnode_readlink, 1103 .mpo_check_vnode_relabel = mac_none_check_vnode_relabel, 1104 .mpo_check_vnode_rename_from = mac_none_check_vnode_rename_from, 1105 .mpo_check_vnode_rename_to = mac_none_check_vnode_rename_to, 1106 .mpo_check_vnode_revoke = mac_none_check_vnode_revoke, 1107 .mpo_check_vnode_setacl = mac_none_check_vnode_setacl, 1108 .mpo_check_vnode_setextattr = mac_none_check_vnode_setextattr, 1109 .mpo_check_vnode_setflags = mac_none_check_vnode_setflags, 1110 .mpo_check_vnode_setmode = mac_none_check_vnode_setmode, 1111 .mpo_check_vnode_setowner = mac_none_check_vnode_setowner, 1112 .mpo_check_vnode_setutimes = mac_none_check_vnode_setutimes, 1113 .mpo_check_vnode_stat = mac_none_check_vnode_stat, 1114 .mpo_check_vnode_write = mac_none_check_vnode_write, 1115 }; 1116 1117 MAC_POLICY_SET(&mac_none_ops, mac_none, "TrustedBSD MAC/None", 1118 MPC_LOADTIME_FLAG_UNLOADOK, NULL); 1119