mac_stub.c revision 164034
1/*- 2 * Copyright (c) 1999-2002 Robert N. M. Watson 3 * Copyright (c) 2001-2005 McAfee, Inc. 4 * Copyright (c) 2005 SPARTA, Inc. 5 * All rights reserved. 6 * 7 * This software was developed by Robert Watson for the TrustedBSD Project. 8 * 9 * This software was developed for the FreeBSD Project in part by McAfee 10 * Research, the Security Research Division of McAfee, Inc. under 11 * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA 12 * CHATS research program. 13 * 14 * This software was enhanced by SPARTA ISSO under SPAWAR contract 15 * N66001-04-C-6019 ("SEFOS"). 16 * 17 * Redistribution and use in source and binary forms, with or without 18 * modification, are permitted provided that the following conditions 19 * are met: 20 * 1. Redistributions of source code must retain the above copyright 21 * notice, this list of conditions and the following disclaimer. 22 * 2. Redistributions in binary form must reproduce the above copyright 23 * notice, this list of conditions and the following disclaimer in the 24 * documentation and/or other materials provided with the distribution. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * 38 * $FreeBSD: head/sys/security/mac_stub/mac_stub.c 164034 2006-11-06 13:45:45Z rwatson $ 39 */ 40 41/* 42 * Developed by the TrustedBSD Project. 43 * 44 * Stub module that implements a NOOP for most (if not all) MAC Framework 45 * policy entry points. 46 */ 47 48#include <sys/types.h> 49#include <sys/param.h> 50#include <sys/acl.h> 51#include <sys/conf.h> 52#include <sys/extattr.h> 53#include <sys/kernel.h> 54#include <sys/mac.h> 55#include <sys/mount.h> 56#include <sys/proc.h> 57#include <sys/systm.h> 58#include <sys/sysproto.h> 59#include <sys/sysent.h> 60#include <sys/vnode.h> 61#include <sys/file.h> 62#include <sys/socket.h> 63#include <sys/socketvar.h> 64#include <sys/pipe.h> 65#include <sys/sx.h> 66#include <sys/sysctl.h> 67#include <sys/msg.h> 68#include <sys/sem.h> 69#include <sys/shm.h> 70 71#include <posix4/ksem.h> 72 73#include <fs/devfs/devfs.h> 74 75#include <net/bpfdesc.h> 76#include <net/if.h> 77#include <net/if_types.h> 78#include <net/if_var.h> 79 80#include <netinet/in.h> 81#include <netinet/in_pcb.h> 82#include <netinet/ip_var.h> 83 84#include <vm/vm.h> 85 86#include <sys/mac_policy.h> 87 88SYSCTL_DECL(_security_mac); 89 90SYSCTL_NODE(_security_mac, OID_AUTO, stub, CTLFLAG_RW, 0, 91 "TrustedBSD mac_stub policy controls"); 92 93static int stub_enabled = 1; 94SYSCTL_INT(_security_mac_stub, OID_AUTO, enabled, CTLFLAG_RW, 95 &stub_enabled, 0, "Enforce mac_stub policy"); 96 97/* 98 * Policy module operations. 99 */ 100static void 101stub_destroy(struct mac_policy_conf *conf) 102{ 103 104} 105 106static void 107stub_init(struct mac_policy_conf *conf) 108{ 109 110} 111 112static int 113stub_syscall(struct thread *td, int call, void *arg) 114{ 115 116 return (0); 117} 118 119/* 120 * Label operations. 121 */ 122static void 123stub_init_label(struct label *label) 124{ 125 126} 127 128static int 129stub_init_label_waitcheck(struct label *label, int flag) 130{ 131 132 return (0); 133} 134 135static void 136stub_destroy_label(struct label *label) 137{ 138 139} 140 141static void 142stub_copy_label(struct label *src, struct label *dest) 143{ 144 145} 146 147static int 148stub_externalize_label(struct label *label, char *element_name, 149 struct sbuf *sb, int *claimed) 150{ 151 152 return (0); 153} 154 155static int 156stub_internalize_label(struct label *label, char *element_name, 157 char *element_data, int *claimed) 158{ 159 160 return (0); 161} 162 163/* 164 * Labeling event operations: file system objects, and things that look 165 * a lot like file system objects. 166 */ 167static void 168stub_associate_vnode_devfs(struct mount *mp, struct label *fslabel, 169 struct devfs_dirent *de, struct label *delabel, struct vnode *vp, 170 struct label *vlabel) 171{ 172 173} 174 175static int 176stub_associate_vnode_extattr(struct mount *mp, struct label *fslabel, 177 struct vnode *vp, struct label *vlabel) 178{ 179 180 return (0); 181} 182 183static void 184stub_associate_vnode_singlelabel(struct mount *mp, 185 struct label *fslabel, struct vnode *vp, struct label *vlabel) 186{ 187 188} 189 190static void 191stub_create_devfs_device(struct ucred *cred, struct mount *mp, 192 struct cdev *dev, struct devfs_dirent *devfs_dirent, struct label *label) 193{ 194 195} 196 197static void 198stub_create_devfs_directory(struct mount *mp, char *dirname, 199 int dirnamelen, struct devfs_dirent *devfs_dirent, struct label *label) 200{ 201 202} 203 204static void 205stub_create_devfs_symlink(struct ucred *cred, struct mount *mp, 206 struct devfs_dirent *dd, struct label *ddlabel, struct devfs_dirent *de, 207 struct label *delabel) 208{ 209 210} 211 212static int 213stub_create_vnode_extattr(struct ucred *cred, struct mount *mp, 214 struct label *fslabel, struct vnode *dvp, struct label *dlabel, 215 struct vnode *vp, struct label *vlabel, struct componentname *cnp) 216{ 217 218 return (0); 219} 220 221static void 222stub_create_mount(struct ucred *cred, struct mount *mp, 223 struct label *mntlabel, struct label *fslabel) 224{ 225 226} 227 228static void 229stub_relabel_vnode(struct ucred *cred, struct vnode *vp, 230 struct label *vnodelabel, struct label *label) 231{ 232 233} 234 235static int 236stub_setlabel_vnode_extattr(struct ucred *cred, struct vnode *vp, 237 struct label *vlabel, struct label *intlabel) 238{ 239 240 return (0); 241} 242 243static void 244stub_update_devfsdirent(struct mount *mp, 245 struct devfs_dirent *devfs_dirent, struct label *direntlabel, 246 struct vnode *vp, struct label *vnodelabel) 247{ 248 249} 250 251/* 252 * Labeling event operations: IPC object. 253 */ 254static void 255stub_create_mbuf_from_socket(struct socket *so, struct label *socketlabel, 256 struct mbuf *m, struct label *mbuflabel) 257{ 258 259} 260 261static void 262stub_create_socket(struct ucred *cred, struct socket *socket, 263 struct label *socketlabel) 264{ 265 266} 267 268static void 269stub_create_pipe(struct ucred *cred, struct pipepair *pp, 270 struct label *pipelabel) 271{ 272 273} 274 275static void 276stub_create_posix_sem(struct ucred *cred, struct ksem *ksemptr, 277 struct label *ks_label) 278{ 279 280} 281 282static void 283stub_create_socket_from_socket(struct socket *oldsocket, 284 struct label *oldsocketlabel, struct socket *newsocket, 285 struct label *newsocketlabel) 286{ 287 288} 289 290static void 291stub_relabel_socket(struct ucred *cred, struct socket *socket, 292 struct label *socketlabel, struct label *newlabel) 293{ 294 295} 296 297static void 298stub_relabel_pipe(struct ucred *cred, struct pipepair *pp, 299 struct label *pipelabel, struct label *newlabel) 300{ 301 302} 303 304static void 305stub_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct label *mbuflabel, 306 struct socket *socket, struct label *socketpeerlabel) 307{ 308 309} 310 311static void 312stub_set_socket_peer_from_socket(struct socket *oldsocket, 313 struct label *oldsocketlabel, struct socket *newsocket, 314 struct label *newsocketpeerlabel) 315{ 316 317} 318 319/* 320 * Labeling event operations: network objects. 321 */ 322static void 323stub_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d, 324 struct label *bpflabel) 325{ 326 327} 328 329static void 330stub_create_datagram_from_ipq(struct ipq *ipq, struct label *ipqlabel, 331 struct mbuf *datagram, struct label *datagramlabel) 332{ 333 334} 335 336static void 337stub_create_fragment(struct mbuf *datagram, struct label *datagramlabel, 338 struct mbuf *fragment, struct label *fragmentlabel) 339{ 340 341} 342 343static void 344stub_create_ifnet(struct ifnet *ifnet, struct label *ifnetlabel) 345{ 346 347} 348 349static void 350stub_create_inpcb_from_socket(struct socket *so, struct label *solabel, 351 struct inpcb *inp, struct label *inplabel) 352{ 353 354} 355 356static void 357stub_create_sysv_msgmsg(struct ucred *cred, struct msqid_kernel *msqkptr, 358 struct label *msqlabel, struct msg *msgptr, struct label *msglabel) 359{ 360 361} 362 363static void 364stub_create_sysv_msgqueue(struct ucred *cred, struct msqid_kernel *msqkptr, 365 struct label *msqlabel) 366{ 367 368} 369 370static void 371stub_create_sysv_sem(struct ucred *cred, struct semid_kernel *semakptr, 372 struct label *semalabel) 373{ 374 375} 376 377static void 378stub_create_sysv_shm(struct ucred *cred, struct shmid_kernel *shmsegptr, 379 struct label *shmalabel) 380{ 381 382} 383 384static void 385stub_create_ipq(struct mbuf *fragment, struct label *fragmentlabel, 386 struct ipq *ipq, struct label *ipqlabel) 387{ 388 389} 390 391static void 392stub_create_mbuf_from_inpcb(struct inpcb *inp, struct label *inplabel, 393 struct mbuf *m, struct label *mlabel) 394{ 395 396} 397 398static void 399stub_create_mbuf_linklayer(struct ifnet *ifnet, struct label *ifnetlabel, 400 struct mbuf *mbuf, struct label *mbuflabel) 401{ 402 403} 404 405static void 406stub_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct label *bpflabel, 407 struct mbuf *mbuf, struct label *mbuflabel) 408{ 409 410} 411 412static void 413stub_create_mbuf_from_ifnet(struct ifnet *ifnet, struct label *ifnetlabel, 414 struct mbuf *m, struct label *mbuflabel) 415{ 416 417} 418 419static void 420stub_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 421 struct label *oldmbuflabel, struct ifnet *ifnet, struct label *ifnetlabel, 422 struct mbuf *newmbuf, struct label *newmbuflabel) 423{ 424 425} 426 427static void 428stub_create_mbuf_netlayer(struct mbuf *oldmbuf, 429 struct label *oldmbuflabel, struct mbuf *newmbuf, struct label *newmbuflabel) 430{ 431 432} 433 434static int 435stub_fragment_match(struct mbuf *fragment, struct label *fragmentlabel, 436 struct ipq *ipq, struct label *ipqlabel) 437{ 438 439 return (1); 440} 441 442static void 443stub_reflect_mbuf_icmp(struct mbuf *m, struct label *mlabel) 444{ 445 446} 447 448static void 449stub_reflect_mbuf_tcp(struct mbuf *m, struct label *mlabel) 450{ 451 452} 453 454static void 455stub_relabel_ifnet(struct ucred *cred, struct ifnet *ifnet, 456 struct label *ifnetlabel, struct label *newlabel) 457{ 458 459} 460 461static void 462stub_update_ipq(struct mbuf *fragment, struct label *fragmentlabel, 463 struct ipq *ipq, struct label *ipqlabel) 464{ 465 466} 467 468static void 469stub_inpcb_sosetlabel(struct socket *so, struct label *solabel, 470 struct inpcb *inp, struct label *inplabel) 471{ 472 473} 474 475/* 476 * Labeling event operations: processes. 477 */ 478static void 479stub_execve_transition(struct ucred *old, struct ucred *new, 480 struct vnode *vp, struct label *vnodelabel, 481 struct label *interpvnodelabel, struct image_params *imgp, 482 struct label *execlabel) 483{ 484 485} 486 487static int 488stub_execve_will_transition(struct ucred *old, struct vnode *vp, 489 struct label *vnodelabel, struct label *interpvnodelabel, 490 struct image_params *imgp, struct label *execlabel) 491{ 492 493 return (0); 494} 495 496static void 497stub_create_proc0(struct ucred *cred) 498{ 499 500} 501 502static void 503stub_create_proc1(struct ucred *cred) 504{ 505 506} 507 508static void 509stub_relabel_cred(struct ucred *cred, struct label *newlabel) 510{ 511 512} 513 514static void 515stub_thread_userret(struct thread *td) 516{ 517 518} 519 520/* 521 * Label cleanup/flush operations 522 */ 523static void 524stub_cleanup_sysv_msgmsg(struct label *msglabel) 525{ 526 527} 528 529static void 530stub_cleanup_sysv_msgqueue(struct label *msqlabel) 531{ 532 533} 534 535static void 536stub_cleanup_sysv_sem(struct label *semalabel) 537{ 538 539} 540 541static void 542stub_cleanup_sysv_shm(struct label *shmlabel) 543{ 544 545} 546 547/* 548 * Access control checks. 549 */ 550static int 551stub_check_bpfdesc_receive(struct bpf_d *bpf_d, struct label *bpflabel, 552 struct ifnet *ifnet, struct label *ifnet_label) 553{ 554 555 return (0); 556} 557 558static int 559stub_check_cred_relabel(struct ucred *cred, struct label *newlabel) 560{ 561 562 return (0); 563} 564 565static int 566stub_check_cred_visible(struct ucred *u1, struct ucred *u2) 567{ 568 569 return (0); 570} 571 572static int 573stub_check_ifnet_relabel(struct ucred *cred, struct ifnet *ifnet, 574 struct label *ifnetlabel, struct label *newlabel) 575{ 576 577 return (0); 578} 579 580static int 581stub_check_ifnet_transmit(struct ifnet *ifnet, struct label *ifnetlabel, 582 struct mbuf *m, struct label *mbuflabel) 583{ 584 585 return (0); 586} 587 588static int 589stub_check_inpcb_deliver(struct inpcb *inp, struct label *inplabel, 590 struct mbuf *m, struct label *mlabel) 591{ 592 593 return (0); 594} 595 596static int 597stub_check_sysv_msgmsq(struct ucred *cred, struct msg *msgptr, 598 struct label *msglabel, struct msqid_kernel *msqkptr, 599 struct label *msqklabel) 600{ 601 602 return (0); 603} 604 605static int 606stub_check_sysv_msgrcv(struct ucred *cred, struct msg *msgptr, 607 struct label *msglabel) 608{ 609 610 return (0); 611} 612 613 614static int 615stub_check_sysv_msgrmid(struct ucred *cred, struct msg *msgptr, 616 struct label *msglabel) 617{ 618 619 return (0); 620} 621 622 623static int 624stub_check_sysv_msqget(struct ucred *cred, struct msqid_kernel *msqkptr, 625 struct label *msqklabel) 626{ 627 628 return (0); 629} 630 631 632static int 633stub_check_sysv_msqsnd(struct ucred *cred, struct msqid_kernel *msqkptr, 634 struct label *msqklabel) 635{ 636 637 return (0); 638} 639 640static int 641stub_check_sysv_msqrcv(struct ucred *cred, struct msqid_kernel *msqkptr, 642 struct label *msqklabel) 643{ 644 645 return (0); 646} 647 648 649static int 650stub_check_sysv_msqctl(struct ucred *cred, struct msqid_kernel *msqkptr, 651 struct label *msqklabel, int cmd) 652{ 653 654 return (0); 655} 656 657 658static int 659stub_check_sysv_semctl(struct ucred *cred, struct semid_kernel *semakptr, 660 struct label *semaklabel, int cmd) 661{ 662 663 return (0); 664} 665 666static int 667stub_check_sysv_semget(struct ucred *cred, struct semid_kernel *semakptr, 668 struct label *semaklabel) 669{ 670 671 return (0); 672} 673 674 675static int 676stub_check_sysv_semop(struct ucred *cred, struct semid_kernel *semakptr, 677 struct label *semaklabel, size_t accesstype) 678{ 679 680 return (0); 681} 682 683static int 684stub_check_sysv_shmat(struct ucred *cred, struct shmid_kernel *shmsegptr, 685 struct label *shmseglabel, int shmflg) 686{ 687 688 return (0); 689} 690 691static int 692stub_check_sysv_shmctl(struct ucred *cred, struct shmid_kernel *shmsegptr, 693 struct label *shmseglabel, int cmd) 694{ 695 696 return (0); 697} 698 699static int 700stub_check_sysv_shmdt(struct ucred *cred, struct shmid_kernel *shmsegptr, 701 struct label *shmseglabel) 702{ 703 704 return (0); 705} 706 707 708static int 709stub_check_sysv_shmget(struct ucred *cred, struct shmid_kernel *shmsegptr, 710 struct label *shmseglabel, int shmflg) 711{ 712 713 return (0); 714} 715 716static int 717stub_check_kenv_dump(struct ucred *cred) 718{ 719 720 return (0); 721} 722 723static int 724stub_check_kenv_get(struct ucred *cred, char *name) 725{ 726 727 return (0); 728} 729 730static int 731stub_check_kenv_set(struct ucred *cred, char *name, char *value) 732{ 733 734 return (0); 735} 736 737static int 738stub_check_kenv_unset(struct ucred *cred, char *name) 739{ 740 741 return (0); 742} 743 744static int 745stub_check_kld_load(struct ucred *cred, struct vnode *vp, 746 struct label *vlabel) 747{ 748 749 return (0); 750} 751 752static int 753stub_check_kld_stat(struct ucred *cred) 754{ 755 756 return (0); 757} 758 759static int 760stub_check_kld_unload(struct ucred *cred) 761{ 762 763 return (0); 764} 765 766static int 767stub_check_mount_stat(struct ucred *cred, struct mount *mp, 768 struct label *mntlabel) 769{ 770 771 return (0); 772} 773 774static int 775stub_check_pipe_ioctl(struct ucred *cred, struct pipepair *pp, 776 struct label *pipelabel, unsigned long cmd, void /* caddr_t */ *data) 777{ 778 779 return (0); 780} 781 782static int 783stub_check_pipe_poll(struct ucred *cred, struct pipepair *pp, 784 struct label *pipelabel) 785{ 786 787 return (0); 788} 789 790static int 791stub_check_pipe_read(struct ucred *cred, struct pipepair *pp, 792 struct label *pipelabel) 793{ 794 795 return (0); 796} 797 798static int 799stub_check_pipe_relabel(struct ucred *cred, struct pipepair *pp, 800 struct label *pipelabel, struct label *newlabel) 801{ 802 803 return (0); 804} 805 806static int 807stub_check_pipe_stat(struct ucred *cred, struct pipepair *pp, 808 struct label *pipelabel) 809{ 810 811 return (0); 812} 813 814static int 815stub_check_pipe_write(struct ucred *cred, struct pipepair *pp, 816 struct label *pipelabel) 817{ 818 819 return (0); 820} 821 822static int 823stub_check_posix_sem_destroy(struct ucred *cred, struct ksem *ksemptr, 824 struct label *ks_label) 825{ 826 827 return (0); 828} 829 830static int 831stub_check_posix_sem_getvalue(struct ucred *cred, struct ksem *ksemptr, 832 struct label *ks_label) 833{ 834 835 return (0); 836} 837 838static int 839stub_check_posix_sem_open(struct ucred *cred, struct ksem *ksemptr, 840 struct label *ks_label) 841{ 842 843 return (0); 844} 845 846static int 847stub_check_posix_sem_post(struct ucred *cred, struct ksem *ksemptr, 848 struct label *ks_label) 849{ 850 851 return (0); 852} 853 854static int 855stub_check_posix_sem_unlink(struct ucred *cred, struct ksem *ksemptr, 856 struct label *ks_label) 857{ 858 859 return (0); 860} 861 862static int 863stub_check_posix_sem_wait(struct ucred *cred, struct ksem *ksemptr, 864 struct label *ks_label) 865{ 866 867 return (0); 868} 869 870static int 871stub_check_proc_debug(struct ucred *cred, struct proc *proc) 872{ 873 874 return (0); 875} 876 877static int 878stub_check_proc_sched(struct ucred *cred, struct proc *proc) 879{ 880 881 return (0); 882} 883 884static int 885stub_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 886{ 887 888 return (0); 889} 890 891static int 892stub_check_proc_wait(struct ucred *cred, struct proc *proc) 893{ 894 895 return (0); 896} 897 898static int 899stub_check_proc_setuid(struct ucred *cred, uid_t uid) 900{ 901 902 return (0); 903} 904 905static int 906stub_check_proc_seteuid(struct ucred *cred, uid_t euid) 907{ 908 909 return (0); 910} 911 912static int 913stub_check_proc_setgid(struct ucred *cred, gid_t gid) 914{ 915 916 return (0); 917} 918 919static int 920stub_check_proc_setegid(struct ucred *cred, gid_t egid) 921{ 922 923 return (0); 924} 925 926static int 927stub_check_proc_setgroups(struct ucred *cred, int ngroups, 928 gid_t *gidset) 929{ 930 931 return (0); 932} 933 934static int 935stub_check_proc_setreuid(struct ucred *cred, uid_t ruid, uid_t euid) 936{ 937 938 return (0); 939} 940 941static int 942stub_check_proc_setregid(struct ucred *cred, gid_t rgid, gid_t egid) 943{ 944 945 return (0); 946} 947 948static int 949stub_check_proc_setresuid(struct ucred *cred, uid_t ruid, uid_t euid, 950 uid_t suid) 951{ 952 953 return (0); 954} 955 956static int 957stub_check_proc_setresgid(struct ucred *cred, gid_t rgid, gid_t egid, 958 gid_t sgid) 959{ 960 961 return (0); 962} 963 964static int 965stub_check_socket_accept(struct ucred *cred, struct socket *socket, 966 struct label *socketlabel) 967{ 968 969 return (0); 970} 971 972static int 973stub_check_socket_bind(struct ucred *cred, struct socket *socket, 974 struct label *socketlabel, struct sockaddr *sockaddr) 975{ 976 977 return (0); 978} 979 980static int 981stub_check_socket_connect(struct ucred *cred, struct socket *socket, 982 struct label *socketlabel, struct sockaddr *sockaddr) 983{ 984 985 return (0); 986} 987 988static int 989stub_check_socket_create(struct ucred *cred, int domain, int type, 990 int protocol) 991{ 992 993 return (0); 994} 995 996static int 997stub_check_socket_deliver(struct socket *so, struct label *socketlabel, 998 struct mbuf *m, struct label *mbuflabel) 999{ 1000 1001 return (0); 1002} 1003 1004static int 1005stub_check_socket_listen(struct ucred *cred, struct socket *so, 1006 struct label *socketlabel) 1007{ 1008 1009 return (0); 1010} 1011 1012static int 1013stub_check_socket_poll(struct ucred *cred, struct socket *so, 1014 struct label *socketlabel) 1015{ 1016 1017 return (0); 1018} 1019 1020static int 1021stub_check_socket_receive(struct ucred *cred, struct socket *so, 1022 struct label *socketlabel) 1023{ 1024 1025 return (0); 1026} 1027 1028static int 1029stub_check_socket_relabel(struct ucred *cred, struct socket *socket, 1030 struct label *socketlabel, struct label *newlabel) 1031{ 1032 1033 return (0); 1034} 1035static int 1036stub_check_socket_send(struct ucred *cred, struct socket *so, 1037 struct label *socketlabel) 1038{ 1039 1040 return (0); 1041} 1042 1043static int 1044stub_check_socket_stat(struct ucred *cred, struct socket *so, 1045 struct label *socketlabel) 1046{ 1047 1048 return (0); 1049} 1050 1051static int 1052stub_check_socket_visible(struct ucred *cred, struct socket *socket, 1053 struct label *socketlabel) 1054{ 1055 1056 return (0); 1057} 1058 1059static int 1060stub_check_sysarch_ioperm(struct ucred *cred) 1061{ 1062 1063 return (0); 1064} 1065 1066static int 1067stub_check_system_acct(struct ucred *cred, struct vnode *vp, 1068 struct label *vlabel) 1069{ 1070 1071 return (0); 1072} 1073 1074static int 1075stub_check_system_reboot(struct ucred *cred, int how) 1076{ 1077 1078 return (0); 1079} 1080 1081static int 1082stub_check_system_settime(struct ucred *cred) 1083{ 1084 1085 return (0); 1086} 1087 1088static int 1089stub_check_system_swapon(struct ucred *cred, struct vnode *vp, 1090 struct label *label) 1091{ 1092 1093 return (0); 1094} 1095 1096static int 1097stub_check_system_swapoff(struct ucred *cred, struct vnode *vp, 1098 struct label *label) 1099{ 1100 1101 return (0); 1102} 1103 1104static int 1105stub_check_system_sysctl(struct ucred *cred, struct sysctl_oid *oidp, 1106 void *arg1, int arg2, struct sysctl_req *req) 1107{ 1108 1109 return (0); 1110} 1111 1112static int 1113stub_check_vnode_access(struct ucred *cred, struct vnode *vp, 1114 struct label *label, int acc_mode) 1115{ 1116 1117 return (0); 1118} 1119 1120static int 1121stub_check_vnode_chdir(struct ucred *cred, struct vnode *dvp, 1122 struct label *dlabel) 1123{ 1124 1125 return (0); 1126} 1127 1128static int 1129stub_check_vnode_chroot(struct ucred *cred, struct vnode *dvp, 1130 struct label *dlabel) 1131{ 1132 1133 return (0); 1134} 1135 1136static int 1137stub_check_vnode_create(struct ucred *cred, struct vnode *dvp, 1138 struct label *dlabel, struct componentname *cnp, struct vattr *vap) 1139{ 1140 1141 return (0); 1142} 1143 1144static int 1145stub_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 1146 struct label *dlabel, struct vnode *vp, struct label *label, 1147 struct componentname *cnp) 1148{ 1149 1150 return (0); 1151} 1152 1153static int 1154stub_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 1155 struct label *label, acl_type_t type) 1156{ 1157 1158 return (0); 1159} 1160 1161static int 1162stub_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp, 1163 struct label *label, int attrnamespace, const char *name) 1164{ 1165 1166 return (0); 1167} 1168 1169static int 1170stub_check_vnode_exec(struct ucred *cred, struct vnode *vp, 1171 struct label *label, struct image_params *imgp, 1172 struct label *execlabel) 1173{ 1174 1175 return (0); 1176} 1177 1178static int 1179stub_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 1180 struct label *label, acl_type_t type) 1181{ 1182 1183 return (0); 1184} 1185 1186static int 1187stub_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 1188 struct label *label, int attrnamespace, const char *name, struct uio *uio) 1189{ 1190 1191 return (0); 1192} 1193 1194static int 1195stub_check_vnode_link(struct ucred *cred, struct vnode *dvp, 1196 struct label *dlabel, struct vnode *vp, struct label *label, 1197 struct componentname *cnp) 1198{ 1199 1200 return (0); 1201} 1202 1203static int 1204stub_check_vnode_listextattr(struct ucred *cred, struct vnode *vp, 1205 struct label *label, int attrnamespace) 1206{ 1207 1208 return (0); 1209} 1210 1211static int 1212stub_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 1213 struct label *dlabel, struct componentname *cnp) 1214{ 1215 1216 return (0); 1217} 1218 1219static int 1220stub_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 1221 struct label *label, int prot, int flags) 1222{ 1223 1224 return (0); 1225} 1226 1227static int 1228stub_check_vnode_open(struct ucred *cred, struct vnode *vp, 1229 struct label *filelabel, int acc_mode) 1230{ 1231 1232 return (0); 1233} 1234 1235static int 1236stub_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred, 1237 struct vnode *vp, struct label *label) 1238{ 1239 1240 return (0); 1241} 1242 1243static int 1244stub_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred, 1245 struct vnode *vp, struct label *label) 1246{ 1247 1248 return (0); 1249} 1250 1251static int 1252stub_check_vnode_readdir(struct ucred *cred, struct vnode *vp, 1253 struct label *dlabel) 1254{ 1255 1256 return (0); 1257} 1258 1259static int 1260stub_check_vnode_readlink(struct ucred *cred, struct vnode *vp, 1261 struct label *vnodelabel) 1262{ 1263 1264 return (0); 1265} 1266 1267static int 1268stub_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 1269 struct label *vnodelabel, struct label *newlabel) 1270{ 1271 1272 return (0); 1273} 1274 1275static int 1276stub_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 1277 struct label *dlabel, struct vnode *vp, struct label *label, 1278 struct componentname *cnp) 1279{ 1280 1281 return (0); 1282} 1283 1284static int 1285stub_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 1286 struct label *dlabel, struct vnode *vp, struct label *label, int samedir, 1287 struct componentname *cnp) 1288{ 1289 1290 return (0); 1291} 1292 1293static int 1294stub_check_vnode_revoke(struct ucred *cred, struct vnode *vp, 1295 struct label *label) 1296{ 1297 1298 return (0); 1299} 1300 1301static int 1302stub_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 1303 struct label *label, acl_type_t type, struct acl *acl) 1304{ 1305 1306 return (0); 1307} 1308 1309static int 1310stub_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 1311 struct label *label, int attrnamespace, const char *name, struct uio *uio) 1312{ 1313 1314 return (0); 1315} 1316 1317static int 1318stub_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 1319 struct label *label, u_long flags) 1320{ 1321 1322 return (0); 1323} 1324 1325static int 1326stub_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 1327 struct label *label, mode_t mode) 1328{ 1329 1330 return (0); 1331} 1332 1333static int 1334stub_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 1335 struct label *label, uid_t uid, gid_t gid) 1336{ 1337 1338 return (0); 1339} 1340 1341static int 1342stub_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 1343 struct label *label, struct timespec atime, struct timespec mtime) 1344{ 1345 1346 return (0); 1347} 1348 1349static int 1350stub_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred, 1351 struct vnode *vp, struct label *label) 1352{ 1353 1354 return (0); 1355} 1356 1357static int 1358stub_check_vnode_write(struct ucred *active_cred, 1359 struct ucred *file_cred, struct vnode *vp, struct label *label) 1360{ 1361 1362 return (0); 1363} 1364 1365static int 1366stub_priv_check(struct ucred *cred, int priv) 1367{ 1368 1369 return (0); 1370} 1371 1372static int 1373stub_priv_grant(struct ucred *cred, int priv) 1374{ 1375 1376 return (EPERM); 1377} 1378 1379static struct mac_policy_ops mac_stub_ops = 1380{ 1381 .mpo_destroy = stub_destroy, 1382 .mpo_init = stub_init, 1383 .mpo_syscall = stub_syscall, 1384 .mpo_init_bpfdesc_label = stub_init_label, 1385 .mpo_init_cred_label = stub_init_label, 1386 .mpo_init_devfsdirent_label = stub_init_label, 1387 .mpo_init_ifnet_label = stub_init_label, 1388 .mpo_init_inpcb_label = stub_init_label_waitcheck, 1389 .mpo_init_sysv_msgmsg_label = stub_init_label, 1390 .mpo_init_sysv_msgqueue_label = stub_init_label, 1391 .mpo_init_sysv_sem_label = stub_init_label, 1392 .mpo_init_sysv_shm_label = stub_init_label, 1393 .mpo_init_ipq_label = stub_init_label_waitcheck, 1394 .mpo_init_mbuf_label = stub_init_label_waitcheck, 1395 .mpo_init_mount_label = stub_init_label, 1396 .mpo_init_mount_fs_label = stub_init_label, 1397 .mpo_init_pipe_label = stub_init_label, 1398 .mpo_init_posix_sem_label = stub_init_label, 1399 .mpo_init_socket_label = stub_init_label_waitcheck, 1400 .mpo_init_socket_peer_label = stub_init_label_waitcheck, 1401 .mpo_init_vnode_label = stub_init_label, 1402 .mpo_destroy_bpfdesc_label = stub_destroy_label, 1403 .mpo_destroy_cred_label = stub_destroy_label, 1404 .mpo_destroy_devfsdirent_label = stub_destroy_label, 1405 .mpo_destroy_ifnet_label = stub_destroy_label, 1406 .mpo_destroy_inpcb_label = stub_destroy_label, 1407 .mpo_destroy_sysv_msgmsg_label = stub_destroy_label, 1408 .mpo_destroy_sysv_msgqueue_label = stub_destroy_label, 1409 .mpo_destroy_sysv_sem_label = stub_destroy_label, 1410 .mpo_destroy_sysv_shm_label = stub_destroy_label, 1411 .mpo_destroy_ipq_label = stub_destroy_label, 1412 .mpo_destroy_mbuf_label = stub_destroy_label, 1413 .mpo_destroy_mount_label = stub_destroy_label, 1414 .mpo_destroy_mount_fs_label = stub_destroy_label, 1415 .mpo_destroy_pipe_label = stub_destroy_label, 1416 .mpo_destroy_posix_sem_label = stub_destroy_label, 1417 .mpo_destroy_socket_label = stub_destroy_label, 1418 .mpo_destroy_socket_peer_label = stub_destroy_label, 1419 .mpo_destroy_vnode_label = stub_destroy_label, 1420 .mpo_copy_cred_label = stub_copy_label, 1421 .mpo_copy_ifnet_label = stub_copy_label, 1422 .mpo_copy_mbuf_label = stub_copy_label, 1423 .mpo_copy_pipe_label = stub_copy_label, 1424 .mpo_copy_socket_label = stub_copy_label, 1425 .mpo_copy_vnode_label = stub_copy_label, 1426 .mpo_externalize_cred_label = stub_externalize_label, 1427 .mpo_externalize_ifnet_label = stub_externalize_label, 1428 .mpo_externalize_pipe_label = stub_externalize_label, 1429 .mpo_externalize_socket_label = stub_externalize_label, 1430 .mpo_externalize_socket_peer_label = stub_externalize_label, 1431 .mpo_externalize_vnode_label = stub_externalize_label, 1432 .mpo_internalize_cred_label = stub_internalize_label, 1433 .mpo_internalize_ifnet_label = stub_internalize_label, 1434 .mpo_internalize_pipe_label = stub_internalize_label, 1435 .mpo_internalize_socket_label = stub_internalize_label, 1436 .mpo_internalize_vnode_label = stub_internalize_label, 1437 .mpo_associate_vnode_devfs = stub_associate_vnode_devfs, 1438 .mpo_associate_vnode_extattr = stub_associate_vnode_extattr, 1439 .mpo_associate_vnode_singlelabel = stub_associate_vnode_singlelabel, 1440 .mpo_create_devfs_device = stub_create_devfs_device, 1441 .mpo_create_devfs_directory = stub_create_devfs_directory, 1442 .mpo_create_devfs_symlink = stub_create_devfs_symlink, 1443 .mpo_create_sysv_msgmsg = stub_create_sysv_msgmsg, 1444 .mpo_create_sysv_msgqueue = stub_create_sysv_msgqueue, 1445 .mpo_create_sysv_sem = stub_create_sysv_sem, 1446 .mpo_create_sysv_shm = stub_create_sysv_shm, 1447 .mpo_create_vnode_extattr = stub_create_vnode_extattr, 1448 .mpo_create_mount = stub_create_mount, 1449 .mpo_relabel_vnode = stub_relabel_vnode, 1450 .mpo_setlabel_vnode_extattr = stub_setlabel_vnode_extattr, 1451 .mpo_update_devfsdirent = stub_update_devfsdirent, 1452 .mpo_create_mbuf_from_socket = stub_create_mbuf_from_socket, 1453 .mpo_create_pipe = stub_create_pipe, 1454 .mpo_create_posix_sem = stub_create_posix_sem, 1455 .mpo_create_socket = stub_create_socket, 1456 .mpo_create_socket_from_socket = stub_create_socket_from_socket, 1457 .mpo_relabel_pipe = stub_relabel_pipe, 1458 .mpo_relabel_socket = stub_relabel_socket, 1459 .mpo_set_socket_peer_from_mbuf = stub_set_socket_peer_from_mbuf, 1460 .mpo_set_socket_peer_from_socket = stub_set_socket_peer_from_socket, 1461 .mpo_create_bpfdesc = stub_create_bpfdesc, 1462 .mpo_create_ifnet = stub_create_ifnet, 1463 .mpo_create_inpcb_from_socket = stub_create_inpcb_from_socket, 1464 .mpo_create_ipq = stub_create_ipq, 1465 .mpo_create_datagram_from_ipq = stub_create_datagram_from_ipq, 1466 .mpo_create_fragment = stub_create_fragment, 1467 .mpo_create_mbuf_from_inpcb = stub_create_mbuf_from_inpcb, 1468 .mpo_create_mbuf_linklayer = stub_create_mbuf_linklayer, 1469 .mpo_create_mbuf_from_bpfdesc = stub_create_mbuf_from_bpfdesc, 1470 .mpo_create_mbuf_from_ifnet = stub_create_mbuf_from_ifnet, 1471 .mpo_create_mbuf_multicast_encap = stub_create_mbuf_multicast_encap, 1472 .mpo_create_mbuf_netlayer = stub_create_mbuf_netlayer, 1473 .mpo_fragment_match = stub_fragment_match, 1474 .mpo_reflect_mbuf_icmp = stub_reflect_mbuf_icmp, 1475 .mpo_reflect_mbuf_tcp = stub_reflect_mbuf_tcp, 1476 .mpo_relabel_ifnet = stub_relabel_ifnet, 1477 .mpo_update_ipq = stub_update_ipq, 1478 .mpo_inpcb_sosetlabel = stub_inpcb_sosetlabel, 1479 .mpo_execve_transition = stub_execve_transition, 1480 .mpo_execve_will_transition = stub_execve_will_transition, 1481 .mpo_create_proc0 = stub_create_proc0, 1482 .mpo_create_proc1 = stub_create_proc1, 1483 .mpo_relabel_cred = stub_relabel_cred, 1484 .mpo_thread_userret = stub_thread_userret, 1485 .mpo_cleanup_sysv_msgmsg = stub_cleanup_sysv_msgmsg, 1486 .mpo_cleanup_sysv_msgqueue = stub_cleanup_sysv_msgqueue, 1487 .mpo_cleanup_sysv_sem = stub_cleanup_sysv_sem, 1488 .mpo_cleanup_sysv_shm = stub_cleanup_sysv_shm, 1489 .mpo_check_bpfdesc_receive = stub_check_bpfdesc_receive, 1490 .mpo_check_cred_relabel = stub_check_cred_relabel, 1491 .mpo_check_cred_visible = stub_check_cred_visible, 1492 .mpo_check_ifnet_relabel = stub_check_ifnet_relabel, 1493 .mpo_check_ifnet_transmit = stub_check_ifnet_transmit, 1494 .mpo_check_inpcb_deliver = stub_check_inpcb_deliver, 1495 .mpo_check_sysv_msgmsq = stub_check_sysv_msgmsq, 1496 .mpo_check_sysv_msgrcv = stub_check_sysv_msgrcv, 1497 .mpo_check_sysv_msgrmid = stub_check_sysv_msgrmid, 1498 .mpo_check_sysv_msqget = stub_check_sysv_msqget, 1499 .mpo_check_sysv_msqsnd = stub_check_sysv_msqsnd, 1500 .mpo_check_sysv_msqrcv = stub_check_sysv_msqrcv, 1501 .mpo_check_sysv_msqctl = stub_check_sysv_msqctl, 1502 .mpo_check_sysv_semctl = stub_check_sysv_semctl, 1503 .mpo_check_sysv_semget = stub_check_sysv_semget, 1504 .mpo_check_sysv_semop = stub_check_sysv_semop, 1505 .mpo_check_sysv_shmat = stub_check_sysv_shmat, 1506 .mpo_check_sysv_shmctl = stub_check_sysv_shmctl, 1507 .mpo_check_sysv_shmdt = stub_check_sysv_shmdt, 1508 .mpo_check_sysv_shmget = stub_check_sysv_shmget, 1509 .mpo_check_kenv_dump = stub_check_kenv_dump, 1510 .mpo_check_kenv_get = stub_check_kenv_get, 1511 .mpo_check_kenv_set = stub_check_kenv_set, 1512 .mpo_check_kenv_unset = stub_check_kenv_unset, 1513 .mpo_check_kld_load = stub_check_kld_load, 1514 .mpo_check_kld_stat = stub_check_kld_stat, 1515 .mpo_check_kld_unload = stub_check_kld_unload, 1516 .mpo_check_mount_stat = stub_check_mount_stat, 1517 .mpo_check_pipe_ioctl = stub_check_pipe_ioctl, 1518 .mpo_check_pipe_poll = stub_check_pipe_poll, 1519 .mpo_check_pipe_read = stub_check_pipe_read, 1520 .mpo_check_pipe_relabel = stub_check_pipe_relabel, 1521 .mpo_check_pipe_stat = stub_check_pipe_stat, 1522 .mpo_check_pipe_write = stub_check_pipe_write, 1523 .mpo_check_posix_sem_destroy = stub_check_posix_sem_destroy, 1524 .mpo_check_posix_sem_getvalue = stub_check_posix_sem_getvalue, 1525 .mpo_check_posix_sem_open = stub_check_posix_sem_open, 1526 .mpo_check_posix_sem_post = stub_check_posix_sem_post, 1527 .mpo_check_posix_sem_unlink = stub_check_posix_sem_unlink, 1528 .mpo_check_posix_sem_wait = stub_check_posix_sem_wait, 1529 .mpo_check_proc_debug = stub_check_proc_debug, 1530 .mpo_check_proc_sched = stub_check_proc_sched, 1531 .mpo_check_proc_setuid = stub_check_proc_setuid, 1532 .mpo_check_proc_seteuid = stub_check_proc_seteuid, 1533 .mpo_check_proc_setgid = stub_check_proc_setgid, 1534 .mpo_check_proc_setegid = stub_check_proc_setegid, 1535 .mpo_check_proc_setgroups = stub_check_proc_setgroups, 1536 .mpo_check_proc_setreuid = stub_check_proc_setreuid, 1537 .mpo_check_proc_setregid = stub_check_proc_setregid, 1538 .mpo_check_proc_setresuid = stub_check_proc_setresuid, 1539 .mpo_check_proc_setresgid = stub_check_proc_setresgid, 1540 .mpo_check_proc_signal = stub_check_proc_signal, 1541 .mpo_check_proc_wait = stub_check_proc_wait, 1542 .mpo_check_socket_accept = stub_check_socket_accept, 1543 .mpo_check_socket_bind = stub_check_socket_bind, 1544 .mpo_check_socket_connect = stub_check_socket_connect, 1545 .mpo_check_socket_create = stub_check_socket_create, 1546 .mpo_check_socket_deliver = stub_check_socket_deliver, 1547 .mpo_check_socket_listen = stub_check_socket_listen, 1548 .mpo_check_socket_poll = stub_check_socket_poll, 1549 .mpo_check_socket_receive = stub_check_socket_receive, 1550 .mpo_check_socket_relabel = stub_check_socket_relabel, 1551 .mpo_check_socket_send = stub_check_socket_send, 1552 .mpo_check_socket_stat = stub_check_socket_stat, 1553 .mpo_check_socket_visible = stub_check_socket_visible, 1554 .mpo_check_sysarch_ioperm = stub_check_sysarch_ioperm, 1555 .mpo_check_system_acct = stub_check_system_acct, 1556 .mpo_check_system_reboot = stub_check_system_reboot, 1557 .mpo_check_system_settime = stub_check_system_settime, 1558 .mpo_check_system_swapon = stub_check_system_swapon, 1559 .mpo_check_system_swapoff = stub_check_system_swapoff, 1560 .mpo_check_system_sysctl = stub_check_system_sysctl, 1561 .mpo_check_vnode_access = stub_check_vnode_access, 1562 .mpo_check_vnode_chdir = stub_check_vnode_chdir, 1563 .mpo_check_vnode_chroot = stub_check_vnode_chroot, 1564 .mpo_check_vnode_create = stub_check_vnode_create, 1565 .mpo_check_vnode_delete = stub_check_vnode_delete, 1566 .mpo_check_vnode_deleteacl = stub_check_vnode_deleteacl, 1567 .mpo_check_vnode_deleteextattr = stub_check_vnode_deleteextattr, 1568 .mpo_check_vnode_exec = stub_check_vnode_exec, 1569 .mpo_check_vnode_getacl = stub_check_vnode_getacl, 1570 .mpo_check_vnode_getextattr = stub_check_vnode_getextattr, 1571 .mpo_check_vnode_link = stub_check_vnode_link, 1572 .mpo_check_vnode_listextattr = stub_check_vnode_listextattr, 1573 .mpo_check_vnode_lookup = stub_check_vnode_lookup, 1574 .mpo_check_vnode_mmap = stub_check_vnode_mmap, 1575 .mpo_check_vnode_open = stub_check_vnode_open, 1576 .mpo_check_vnode_poll = stub_check_vnode_poll, 1577 .mpo_check_vnode_read = stub_check_vnode_read, 1578 .mpo_check_vnode_readdir = stub_check_vnode_readdir, 1579 .mpo_check_vnode_readlink = stub_check_vnode_readlink, 1580 .mpo_check_vnode_relabel = stub_check_vnode_relabel, 1581 .mpo_check_vnode_rename_from = stub_check_vnode_rename_from, 1582 .mpo_check_vnode_rename_to = stub_check_vnode_rename_to, 1583 .mpo_check_vnode_revoke = stub_check_vnode_revoke, 1584 .mpo_check_vnode_setacl = stub_check_vnode_setacl, 1585 .mpo_check_vnode_setextattr = stub_check_vnode_setextattr, 1586 .mpo_check_vnode_setflags = stub_check_vnode_setflags, 1587 .mpo_check_vnode_setmode = stub_check_vnode_setmode, 1588 .mpo_check_vnode_setowner = stub_check_vnode_setowner, 1589 .mpo_check_vnode_setutimes = stub_check_vnode_setutimes, 1590 .mpo_check_vnode_stat = stub_check_vnode_stat, 1591 .mpo_check_vnode_write = stub_check_vnode_write, 1592 .mpo_priv_check = stub_priv_check, 1593 .mpo_priv_grant = stub_priv_grant, 1594}; 1595 1596MAC_POLICY_SET(&mac_stub_ops, mac_stub, "TrustedBSD MAC/Stub", 1597 MPC_LOADTIME_FLAG_UNLOADOK, NULL); 1598