mac_biba.c revision 104546
1271294Sngie/*- 2271294Sngie * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson 3271294Sngie * Copyright (c) 2001, 2002 Networks Associates Technology, Inc. 4271294Sngie * All rights reserved. 5271294Sngie * 6271294Sngie * This software was developed by Robert Watson for the TrustedBSD Project. 7271294Sngie * 8271294Sngie * This software was developed for the FreeBSD Project in part by NAI Labs, 9271294Sngie * the Security Research Division of Network Associates, Inc. under 10271294Sngie * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA 11271294Sngie * CHATS research program. 12271294Sngie * 13271294Sngie * Redistribution and use in source and binary forms, with or without 14271294Sngie * modification, are permitted provided that the following conditions 15271294Sngie * are met: 16271294Sngie * 1. Redistributions of source code must retain the above copyright 17271294Sngie * notice, this list of conditions and the following disclaimer. 18271294Sngie * 2. Redistributions in binary form must reproduce the above copyright 19271294Sngie * notice, this list of conditions and the following disclaimer in the 20271294Sngie * documentation and/or other materials provided with the distribution. 21 * 3. The names of the authors may not be used to endorse or promote 22 * products derived from this software without specific prior written 23 * permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 27 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 28 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 29 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 30 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 31 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 32 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 33 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 34 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 35 * SUCH DAMAGE. 36 * 37 * $FreeBSD: head/sys/security/mac_biba/mac_biba.c 104546 2002-10-06 02:46:26Z rwatson $ 38 */ 39 40/* 41 * Developed by the TrustedBSD Project. 42 * Biba fixed label mandatory integrity policy. 43 */ 44 45#include <sys/types.h> 46#include <sys/param.h> 47#include <sys/acl.h> 48#include <sys/conf.h> 49#include <sys/kernel.h> 50#include <sys/mac.h> 51#include <sys/malloc.h> 52#include <sys/mount.h> 53#include <sys/proc.h> 54#include <sys/systm.h> 55#include <sys/sysproto.h> 56#include <sys/sysent.h> 57#include <sys/vnode.h> 58#include <sys/file.h> 59#include <sys/socket.h> 60#include <sys/socketvar.h> 61#include <sys/pipe.h> 62#include <sys/sysctl.h> 63 64#include <fs/devfs/devfs.h> 65 66#include <net/bpfdesc.h> 67#include <net/if.h> 68#include <net/if_types.h> 69#include <net/if_var.h> 70 71#include <netinet/in.h> 72#include <netinet/ip_var.h> 73 74#include <vm/vm.h> 75 76#include <sys/mac_policy.h> 77 78#include <security/mac_biba/mac_biba.h> 79 80SYSCTL_DECL(_security_mac); 81 82SYSCTL_NODE(_security_mac, OID_AUTO, biba, CTLFLAG_RW, 0, 83 "TrustedBSD mac_biba policy controls"); 84 85static int mac_biba_enabled = 0; 86SYSCTL_INT(_security_mac_biba, OID_AUTO, enabled, CTLFLAG_RW, 87 &mac_biba_enabled, 0, "Enforce MAC/Biba policy"); 88TUNABLE_INT("security.mac.biba.enabled", &mac_biba_enabled); 89 90static int destroyed_not_inited; 91SYSCTL_INT(_security_mac_biba, OID_AUTO, destroyed_not_inited, CTLFLAG_RD, 92 &destroyed_not_inited, 0, "Count of labels destroyed but not inited"); 93 94static int trust_all_interfaces = 0; 95SYSCTL_INT(_security_mac_biba, OID_AUTO, trust_all_interfaces, CTLFLAG_RD, 96 &trust_all_interfaces, 0, "Consider all interfaces 'trusted' by MAC/Biba"); 97TUNABLE_INT("security.mac.biba.trust_all_interfaces", &trust_all_interfaces); 98 99static char trusted_interfaces[128]; 100SYSCTL_STRING(_security_mac_biba, OID_AUTO, trusted_interfaces, CTLFLAG_RD, 101 trusted_interfaces, 0, "Interfaces considered 'trusted' by MAC/Biba"); 102TUNABLE_STR("security.mac.biba.trusted_interfaces", trusted_interfaces, 103 sizeof(trusted_interfaces)); 104 105static int mac_biba_revocation_enabled = 0; 106SYSCTL_INT(_security_mac_biba, OID_AUTO, revocation_enabled, CTLFLAG_RW, 107 &mac_biba_revocation_enabled, 0, "Revoke access to objects on relabel"); 108TUNABLE_INT("security.mac.biba.revocation_enabled", 109 &mac_biba_revocation_enabled); 110 111static int mac_biba_slot; 112#define SLOT(l) ((struct mac_biba *)LABEL_TO_SLOT((l), mac_biba_slot).l_ptr) 113 114MALLOC_DEFINE(M_MACBIBA, "biba label", "MAC/Biba labels"); 115 116static int mac_biba_check_vnode_open(struct ucred *cred, struct vnode *vp, 117 struct label *vnodelabel, mode_t acc_mode); 118 119static struct mac_biba * 120biba_alloc(int flag) 121{ 122 struct mac_biba *mac_biba; 123 124 mac_biba = malloc(sizeof(struct mac_biba), M_MACBIBA, M_ZERO | flag); 125 126 return (mac_biba); 127} 128 129static void 130biba_free(struct mac_biba *mac_biba) 131{ 132 133 if (mac_biba != NULL) 134 free(mac_biba, M_MACBIBA); 135 else 136 atomic_add_int(&destroyed_not_inited, 1); 137} 138 139static int 140mac_biba_dominate_element(struct mac_biba_element *a, 141 struct mac_biba_element *b) 142{ 143 144 switch(a->mbe_type) { 145 case MAC_BIBA_TYPE_EQUAL: 146 case MAC_BIBA_TYPE_HIGH: 147 return (1); 148 149 case MAC_BIBA_TYPE_LOW: 150 switch (b->mbe_type) { 151 case MAC_BIBA_TYPE_GRADE: 152 case MAC_BIBA_TYPE_HIGH: 153 return (0); 154 155 case MAC_BIBA_TYPE_EQUAL: 156 case MAC_BIBA_TYPE_LOW: 157 return (1); 158 159 default: 160 panic("mac_biba_dominate_element: b->mbe_type invalid"); 161 } 162 163 case MAC_BIBA_TYPE_GRADE: 164 switch (b->mbe_type) { 165 case MAC_BIBA_TYPE_EQUAL: 166 case MAC_BIBA_TYPE_LOW: 167 return (1); 168 169 case MAC_BIBA_TYPE_HIGH: 170 return (0); 171 172 case MAC_BIBA_TYPE_GRADE: 173 return (a->mbe_grade >= b->mbe_grade); 174 175 default: 176 panic("mac_biba_dominate_element: b->mbe_type invalid"); 177 } 178 179 default: 180 panic("mac_biba_dominate_element: a->mbe_type invalid"); 181 } 182 183 return (0); 184} 185 186static int 187mac_biba_range_in_range(struct mac_biba *rangea, struct mac_biba *rangeb) 188{ 189 190 return (mac_biba_dominate_element(&rangeb->mb_rangehigh, 191 &rangea->mb_rangehigh) && 192 mac_biba_dominate_element(&rangea->mb_rangelow, 193 &rangeb->mb_rangelow)); 194} 195 196static int 197mac_biba_single_in_range(struct mac_biba *single, struct mac_biba *range) 198{ 199 200 KASSERT((single->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0, 201 ("mac_biba_single_in_range: a not single")); 202 KASSERT((range->mb_flags & MAC_BIBA_FLAG_RANGE) != 0, 203 ("mac_biba_single_in_range: b not range")); 204 205 return (mac_biba_dominate_element(&range->mb_rangehigh, 206 &single->mb_single) && 207 mac_biba_dominate_element(&single->mb_single, 208 &range->mb_rangelow)); 209 210 return (1); 211} 212 213static int 214mac_biba_dominate_single(struct mac_biba *a, struct mac_biba *b) 215{ 216 KASSERT((a->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0, 217 ("mac_biba_dominate_single: a not single")); 218 KASSERT((b->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0, 219 ("mac_biba_dominate_single: b not single")); 220 221 return (mac_biba_dominate_element(&a->mb_single, &b->mb_single)); 222} 223 224static int 225mac_biba_equal_element(struct mac_biba_element *a, struct mac_biba_element *b) 226{ 227 228 if (a->mbe_type == MAC_BIBA_TYPE_EQUAL || 229 b->mbe_type == MAC_BIBA_TYPE_EQUAL) 230 return (1); 231 232 return (a->mbe_type == b->mbe_type && a->mbe_grade == b->mbe_grade); 233} 234 235static int 236mac_biba_equal_single(struct mac_biba *a, struct mac_biba *b) 237{ 238 239 KASSERT((a->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0, 240 ("mac_biba_equal_single: a not single")); 241 KASSERT((b->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0, 242 ("mac_biba_equal_single: b not single")); 243 244 return (mac_biba_equal_element(&a->mb_single, &b->mb_single)); 245} 246 247static int 248mac_biba_valid(struct mac_biba *mac_biba) 249{ 250 251 if (mac_biba->mb_flags & MAC_BIBA_FLAG_SINGLE) { 252 switch (mac_biba->mb_single.mbe_type) { 253 case MAC_BIBA_TYPE_GRADE: 254 break; 255 256 case MAC_BIBA_TYPE_EQUAL: 257 case MAC_BIBA_TYPE_HIGH: 258 case MAC_BIBA_TYPE_LOW: 259 if (mac_biba->mb_single.mbe_grade != 0) 260 return (EINVAL); 261 break; 262 263 default: 264 return (EINVAL); 265 } 266 } else { 267 if (mac_biba->mb_single.mbe_type != MAC_BIBA_TYPE_UNDEF) 268 return (EINVAL); 269 } 270 271 if (mac_biba->mb_flags & MAC_BIBA_FLAG_RANGE) { 272 switch (mac_biba->mb_rangelow.mbe_type) { 273 case MAC_BIBA_TYPE_GRADE: 274 break; 275 276 case MAC_BIBA_TYPE_EQUAL: 277 case MAC_BIBA_TYPE_HIGH: 278 case MAC_BIBA_TYPE_LOW: 279 if (mac_biba->mb_rangelow.mbe_grade != 0) 280 return (EINVAL); 281 break; 282 283 default: 284 return (EINVAL); 285 } 286 287 switch (mac_biba->mb_rangehigh.mbe_type) { 288 case MAC_BIBA_TYPE_GRADE: 289 break; 290 291 case MAC_BIBA_TYPE_EQUAL: 292 case MAC_BIBA_TYPE_HIGH: 293 case MAC_BIBA_TYPE_LOW: 294 if (mac_biba->mb_rangehigh.mbe_grade != 0) 295 return (EINVAL); 296 break; 297 298 default: 299 return (EINVAL); 300 } 301 if (!mac_biba_dominate_element(&mac_biba->mb_rangehigh, 302 &mac_biba->mb_rangelow)) 303 return (EINVAL); 304 } else { 305 if (mac_biba->mb_rangelow.mbe_type != MAC_BIBA_TYPE_UNDEF || 306 mac_biba->mb_rangehigh.mbe_type != MAC_BIBA_TYPE_UNDEF) 307 return (EINVAL); 308 } 309 310 return (0); 311} 312 313static void 314mac_biba_set_range(struct mac_biba *mac_biba, u_short typelow, 315 u_short gradelow, u_short typehigh, u_short gradehigh) 316{ 317 318 mac_biba->mb_rangelow.mbe_type = typelow; 319 mac_biba->mb_rangelow.mbe_grade = gradelow; 320 mac_biba->mb_rangehigh.mbe_type = typehigh; 321 mac_biba->mb_rangehigh.mbe_grade = gradehigh; 322 mac_biba->mb_flags |= MAC_BIBA_FLAG_RANGE; 323} 324 325static void 326mac_biba_set_single(struct mac_biba *mac_biba, u_short type, u_short grade) 327{ 328 329 mac_biba->mb_single.mbe_type = type; 330 mac_biba->mb_single.mbe_grade = grade; 331 mac_biba->mb_flags |= MAC_BIBA_FLAG_SINGLE; 332} 333 334static void 335mac_biba_copy_range(struct mac_biba *labelfrom, struct mac_biba *labelto) 336{ 337 KASSERT((labelfrom->mb_flags & MAC_BIBA_FLAG_RANGE) != 0, 338 ("mac_biba_copy_range: labelfrom not range")); 339 340 labelto->mb_rangelow = labelfrom->mb_rangelow; 341 labelto->mb_rangehigh = labelfrom->mb_rangehigh; 342 labelto->mb_flags |= MAC_BIBA_FLAG_RANGE; 343} 344 345static void 346mac_biba_copy_single(struct mac_biba *labelfrom, struct mac_biba *labelto) 347{ 348 349 KASSERT((labelfrom->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0, 350 ("mac_biba_copy_single: labelfrom not single")); 351 352 labelto->mb_single = labelfrom->mb_single; 353 labelto->mb_flags |= MAC_BIBA_FLAG_SINGLE; 354} 355 356static void 357mac_biba_copy_single_to_range(struct mac_biba *labelfrom, 358 struct mac_biba *labelto) 359{ 360 361 KASSERT((labelfrom->mb_flags & MAC_BIBA_FLAG_SINGLE) != 0, 362 ("mac_biba_copy_single_to_range: labelfrom not single")); 363 364 labelto->mb_rangelow = labelfrom->mb_single; 365 labelto->mb_rangehigh = labelfrom->mb_single; 366 labelto->mb_flags |= MAC_BIBA_FLAG_RANGE; 367} 368 369/* 370 * Policy module operations. 371 */ 372static void 373mac_biba_destroy(struct mac_policy_conf *conf) 374{ 375 376} 377 378static void 379mac_biba_init(struct mac_policy_conf *conf) 380{ 381 382} 383 384/* 385 * Label operations. 386 */ 387static void 388mac_biba_init_label(struct label *label) 389{ 390 391 SLOT(label) = biba_alloc(M_WAITOK); 392} 393 394static int 395mac_biba_init_label_waitcheck(struct label *label, int flag) 396{ 397 398 SLOT(label) = biba_alloc(flag); 399 if (SLOT(label) == NULL) 400 return (ENOMEM); 401 402 return (0); 403} 404 405static void 406mac_biba_destroy_label(struct label *label) 407{ 408 409 biba_free(SLOT(label)); 410 SLOT(label) = NULL; 411} 412 413static int 414mac_biba_externalize(struct label *label, struct mac *extmac) 415{ 416 struct mac_biba *mac_biba; 417 418 mac_biba = SLOT(label); 419 420 if (mac_biba == NULL) { 421 printf("mac_biba_externalize: NULL pointer\n"); 422 return (0); 423 } 424 425 extmac->m_biba = *mac_biba; 426 427 return (0); 428} 429 430static int 431mac_biba_internalize(struct label *label, struct mac *extmac) 432{ 433 struct mac_biba *mac_biba; 434 int error; 435 436 mac_biba = SLOT(label); 437 438 error = mac_biba_valid(mac_biba); 439 if (error) 440 return (error); 441 442 *mac_biba = extmac->m_biba; 443 444 return (0); 445} 446 447/* 448 * Labeling event operations: file system objects, and things that look 449 * a lot like file system objects. 450 */ 451static void 452mac_biba_create_devfs_device(dev_t dev, struct devfs_dirent *devfs_dirent, 453 struct label *label) 454{ 455 struct mac_biba *mac_biba; 456 int biba_type; 457 458 mac_biba = SLOT(label); 459 if (strcmp(dev->si_name, "null") == 0 || 460 strcmp(dev->si_name, "zero") == 0 || 461 strcmp(dev->si_name, "random") == 0 || 462 strncmp(dev->si_name, "fd/", strlen("fd/")) == 0) 463 biba_type = MAC_BIBA_TYPE_EQUAL; 464 else 465 biba_type = MAC_BIBA_TYPE_HIGH; 466 mac_biba_set_single(mac_biba, biba_type, 0); 467} 468 469static void 470mac_biba_create_devfs_directory(char *dirname, int dirnamelen, 471 struct devfs_dirent *devfs_dirent, struct label *label) 472{ 473 struct mac_biba *mac_biba; 474 475 mac_biba = SLOT(label); 476 mac_biba_set_single(mac_biba, MAC_BIBA_TYPE_HIGH, 0); 477} 478 479static void 480mac_biba_create_devfs_symlink(struct ucred *cred, struct devfs_dirent *dd, 481 struct label *ddlabel, struct devfs_dirent *de, struct label *delabel) 482{ 483 struct mac_biba *source, *dest; 484 485 source = SLOT(&cred->cr_label); 486 dest = SLOT(delabel); 487 488 mac_biba_copy_single(source, dest); 489} 490 491static void 492mac_biba_create_devfs_vnode(struct devfs_dirent *devfs_dirent, 493 struct label *direntlabel, struct vnode *vp, struct label *vnodelabel) 494{ 495 struct mac_biba *source, *dest; 496 497 source = SLOT(direntlabel); 498 dest = SLOT(vnodelabel); 499 mac_biba_copy_single(source, dest); 500} 501 502static void 503mac_biba_create_vnode(struct ucred *cred, struct vnode *parent, 504 struct label *parentlabel, struct vnode *child, struct label *childlabel) 505{ 506 struct mac_biba *source, *dest; 507 508 source = SLOT(&cred->cr_label); 509 dest = SLOT(childlabel); 510 511 mac_biba_copy_single(source, dest); 512} 513 514static void 515mac_biba_create_mount(struct ucred *cred, struct mount *mp, 516 struct label *mntlabel, struct label *fslabel) 517{ 518 struct mac_biba *source, *dest; 519 520 source = SLOT(&cred->cr_label); 521 dest = SLOT(mntlabel); 522 mac_biba_copy_single(source, dest); 523 dest = SLOT(fslabel); 524 mac_biba_copy_single(source, dest); 525} 526 527static void 528mac_biba_create_root_mount(struct ucred *cred, struct mount *mp, 529 struct label *mntlabel, struct label *fslabel) 530{ 531 struct mac_biba *mac_biba; 532 533 /* Always mount root as high integrity. */ 534 mac_biba = SLOT(fslabel); 535 mac_biba_set_single(mac_biba, MAC_BIBA_TYPE_HIGH, 0); 536 mac_biba = SLOT(mntlabel); 537 mac_biba_set_single(mac_biba, MAC_BIBA_TYPE_HIGH, 0); 538} 539 540static void 541mac_biba_relabel_vnode(struct ucred *cred, struct vnode *vp, 542 struct label *vnodelabel, struct label *label) 543{ 544 struct mac_biba *source, *dest; 545 546 source = SLOT(label); 547 dest = SLOT(vnodelabel); 548 549 mac_biba_copy_single(source, dest); 550} 551 552static void 553mac_biba_update_devfsdirent(struct devfs_dirent *devfs_dirent, 554 struct label *direntlabel, struct vnode *vp, struct label *vnodelabel) 555{ 556 struct mac_biba *source, *dest; 557 558 source = SLOT(vnodelabel); 559 dest = SLOT(direntlabel); 560 561 mac_biba_copy_single(source, dest); 562} 563 564static void 565mac_biba_update_procfsvnode(struct vnode *vp, struct label *vnodelabel, 566 struct ucred *cred) 567{ 568 struct mac_biba *source, *dest; 569 570 source = SLOT(&cred->cr_label); 571 dest = SLOT(vnodelabel); 572 573 /* 574 * Only copy the single, not the range, since vnodes only have 575 * a single. 576 */ 577 mac_biba_copy_single(source, dest); 578} 579 580static int 581mac_biba_update_vnode_from_externalized(struct vnode *vp, 582 struct label *vnodelabel, struct mac *extmac) 583{ 584 struct mac_biba *source, *dest; 585 int error; 586 587 source = &extmac->m_biba; 588 dest = SLOT(vnodelabel); 589 590 error = mac_biba_valid(source); 591 if (error) 592 return (error); 593 594 if ((source->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAG_SINGLE) 595 return (EINVAL); 596 597 mac_biba_copy_single(source, dest); 598 599 return (0); 600} 601 602static void 603mac_biba_update_vnode_from_mount(struct vnode *vp, struct label *vnodelabel, 604 struct mount *mp, struct label *fslabel) 605{ 606 struct mac_biba *source, *dest; 607 608 source = SLOT(fslabel); 609 dest = SLOT(vnodelabel); 610 611 mac_biba_copy_single(source, dest); 612} 613 614/* 615 * Labeling event operations: IPC object. 616 */ 617static void 618mac_biba_create_mbuf_from_socket(struct socket *so, struct label *socketlabel, 619 struct mbuf *m, struct label *mbuflabel) 620{ 621 struct mac_biba *source, *dest; 622 623 source = SLOT(socketlabel); 624 dest = SLOT(mbuflabel); 625 626 mac_biba_copy_single(source, dest); 627} 628 629static void 630mac_biba_create_socket(struct ucred *cred, struct socket *socket, 631 struct label *socketlabel) 632{ 633 struct mac_biba *source, *dest; 634 635 source = SLOT(&cred->cr_label); 636 dest = SLOT(socketlabel); 637 638 mac_biba_copy_single(source, dest); 639 mac_biba_copy_single_to_range(source, dest); 640} 641 642static void 643mac_biba_create_pipe(struct ucred *cred, struct pipe *pipe, 644 struct label *pipelabel) 645{ 646 struct mac_biba *source, *dest; 647 648 source = SLOT(&cred->cr_label); 649 dest = SLOT(pipelabel); 650 651 mac_biba_copy_single(source, dest); 652} 653 654static void 655mac_biba_create_socket_from_socket(struct socket *oldsocket, 656 struct label *oldsocketlabel, struct socket *newsocket, 657 struct label *newsocketlabel) 658{ 659 struct mac_biba *source, *dest; 660 661 source = SLOT(oldsocketlabel); 662 dest = SLOT(newsocketlabel); 663 664 mac_biba_copy_single(source, dest); 665 mac_biba_copy_range(source, dest); 666} 667 668static void 669mac_biba_relabel_socket(struct ucred *cred, struct socket *socket, 670 struct label *socketlabel, struct label *newlabel) 671{ 672 struct mac_biba *source, *dest; 673 674 source = SLOT(newlabel); 675 dest = SLOT(socketlabel); 676 677 mac_biba_copy_single(source, dest); 678 mac_biba_copy_range(source, dest); 679} 680 681static void 682mac_biba_relabel_pipe(struct ucred *cred, struct pipe *pipe, 683 struct label *pipelabel, struct label *newlabel) 684{ 685 struct mac_biba *source, *dest; 686 687 source = SLOT(newlabel); 688 dest = SLOT(pipelabel); 689 690 mac_biba_copy_single(source, dest); 691} 692 693static void 694mac_biba_set_socket_peer_from_mbuf(struct mbuf *mbuf, struct label *mbuflabel, 695 struct socket *socket, struct label *socketpeerlabel) 696{ 697 struct mac_biba *source, *dest; 698 699 source = SLOT(mbuflabel); 700 dest = SLOT(socketpeerlabel); 701 702 mac_biba_copy_single(source, dest); 703} 704 705/* 706 * Labeling event operations: network objects. 707 */ 708static void 709mac_biba_set_socket_peer_from_socket(struct socket *oldsocket, 710 struct label *oldsocketlabel, struct socket *newsocket, 711 struct label *newsocketpeerlabel) 712{ 713 struct mac_biba *source, *dest; 714 715 source = SLOT(oldsocketlabel); 716 dest = SLOT(newsocketpeerlabel); 717 718 mac_biba_copy_single(source, dest); 719} 720 721static void 722mac_biba_create_bpfdesc(struct ucred *cred, struct bpf_d *bpf_d, 723 struct label *bpflabel) 724{ 725 struct mac_biba *source, *dest; 726 727 source = SLOT(&cred->cr_label); 728 dest = SLOT(bpflabel); 729 730 mac_biba_copy_single(source, dest); 731} 732 733static void 734mac_biba_create_ifnet(struct ifnet *ifnet, struct label *ifnetlabel) 735{ 736 char tifname[IFNAMSIZ], ifname[IFNAMSIZ], *p, *q; 737 char tiflist[sizeof(trusted_interfaces)]; 738 struct mac_biba *dest; 739 int len, grade; 740 741 dest = SLOT(ifnetlabel); 742 743 if (ifnet->if_type == IFT_LOOP) { 744 grade = MAC_BIBA_TYPE_EQUAL; 745 goto set; 746 } 747 748 if (trust_all_interfaces) { 749 grade = MAC_BIBA_TYPE_HIGH; 750 goto set; 751 } 752 753 grade = MAC_BIBA_TYPE_LOW; 754 755 if (trusted_interfaces[0] == '\0' || 756 !strvalid(trusted_interfaces, sizeof(trusted_interfaces))) 757 goto set; 758 759 for (p = trusted_interfaces, q = tiflist; *p != '\0'; p++, q++) 760 if(*p != ' ' && *p != '\t') 761 *q = *p; 762 763 snprintf(ifname, IFNAMSIZ, "%s%d", ifnet->if_name, ifnet->if_unit); 764 765 for (p = q = tiflist;; p++) { 766 if (*p == ',' || *p == '\0') { 767 len = p - q; 768 if (len < IFNAMSIZ) { 769 bzero(tifname, sizeof(tifname)); 770 bcopy(q, tifname, len); 771 if (strcmp(tifname, ifname) == 0) { 772 grade = MAC_BIBA_TYPE_HIGH; 773 break; 774 } 775 } 776 if (*p == '\0') 777 break; 778 q = p + 1; 779 } 780 } 781set: 782 mac_biba_set_single(dest, grade, 0); 783 mac_biba_set_range(dest, grade, 0, grade, 0); 784} 785 786static void 787mac_biba_create_ipq(struct mbuf *fragment, struct label *fragmentlabel, 788 struct ipq *ipq, struct label *ipqlabel) 789{ 790 struct mac_biba *source, *dest; 791 792 source = SLOT(fragmentlabel); 793 dest = SLOT(ipqlabel); 794 795 mac_biba_copy_single(source, dest); 796} 797 798static void 799mac_biba_create_datagram_from_ipq(struct ipq *ipq, struct label *ipqlabel, 800 struct mbuf *datagram, struct label *datagramlabel) 801{ 802 struct mac_biba *source, *dest; 803 804 source = SLOT(ipqlabel); 805 dest = SLOT(datagramlabel); 806 807 /* Just use the head, since we require them all to match. */ 808 mac_biba_copy_single(source, dest); 809} 810 811static void 812mac_biba_create_fragment(struct mbuf *datagram, struct label *datagramlabel, 813 struct mbuf *fragment, struct label *fragmentlabel) 814{ 815 struct mac_biba *source, *dest; 816 817 source = SLOT(datagramlabel); 818 dest = SLOT(fragmentlabel); 819 820 mac_biba_copy_single(source, dest); 821} 822 823static void 824mac_biba_create_mbuf_from_mbuf(struct mbuf *oldmbuf, 825 struct label *oldmbuflabel, struct mbuf *newmbuf, 826 struct label *newmbuflabel) 827{ 828 struct mac_biba *source, *dest; 829 830 source = SLOT(oldmbuflabel); 831 dest = SLOT(newmbuflabel); 832 833 mac_biba_copy_single(source, dest); 834} 835 836static void 837mac_biba_create_mbuf_linklayer(struct ifnet *ifnet, struct label *ifnetlabel, 838 struct mbuf *mbuf, struct label *mbuflabel) 839{ 840 struct mac_biba *dest; 841 842 dest = SLOT(mbuflabel); 843 844 mac_biba_set_single(dest, MAC_BIBA_TYPE_EQUAL, 0); 845} 846 847static void 848mac_biba_create_mbuf_from_bpfdesc(struct bpf_d *bpf_d, struct label *bpflabel, 849 struct mbuf *mbuf, struct label *mbuflabel) 850{ 851 struct mac_biba *source, *dest; 852 853 source = SLOT(bpflabel); 854 dest = SLOT(mbuflabel); 855 856 mac_biba_copy_single(source, dest); 857} 858 859static void 860mac_biba_create_mbuf_from_ifnet(struct ifnet *ifnet, struct label *ifnetlabel, 861 struct mbuf *m, struct label *mbuflabel) 862{ 863 struct mac_biba *source, *dest; 864 865 source = SLOT(ifnetlabel); 866 dest = SLOT(mbuflabel); 867 868 mac_biba_copy_single(source, dest); 869} 870 871static void 872mac_biba_create_mbuf_multicast_encap(struct mbuf *oldmbuf, 873 struct label *oldmbuflabel, struct ifnet *ifnet, struct label *ifnetlabel, 874 struct mbuf *newmbuf, struct label *newmbuflabel) 875{ 876 struct mac_biba *source, *dest; 877 878 source = SLOT(oldmbuflabel); 879 dest = SLOT(newmbuflabel); 880 881 mac_biba_copy_single(source, dest); 882} 883 884static void 885mac_biba_create_mbuf_netlayer(struct mbuf *oldmbuf, struct label *oldmbuflabel, 886 struct mbuf *newmbuf, struct label *newmbuflabel) 887{ 888 struct mac_biba *source, *dest; 889 890 source = SLOT(oldmbuflabel); 891 dest = SLOT(newmbuflabel); 892 893 mac_biba_copy_single(source, dest); 894} 895 896static int 897mac_biba_fragment_match(struct mbuf *fragment, struct label *fragmentlabel, 898 struct ipq *ipq, struct label *ipqlabel) 899{ 900 struct mac_biba *a, *b; 901 902 a = SLOT(ipqlabel); 903 b = SLOT(fragmentlabel); 904 905 return (mac_biba_equal_single(a, b)); 906} 907 908static void 909mac_biba_relabel_ifnet(struct ucred *cred, struct ifnet *ifnet, 910 struct label *ifnetlabel, struct label *newlabel) 911{ 912 struct mac_biba *source, *dest; 913 914 source = SLOT(newlabel); 915 dest = SLOT(ifnetlabel); 916 917 mac_biba_copy_single(source, dest); 918 mac_biba_copy_range(source, dest); 919} 920 921static void 922mac_biba_update_ipq(struct mbuf *fragment, struct label *fragmentlabel, 923 struct ipq *ipq, struct label *ipqlabel) 924{ 925 926 /* NOOP: we only accept matching labels, so no need to update */ 927} 928 929/* 930 * Labeling event operations: processes. 931 */ 932static void 933mac_biba_create_cred(struct ucred *cred_parent, struct ucred *cred_child) 934{ 935 struct mac_biba *source, *dest; 936 937 source = SLOT(&cred_parent->cr_label); 938 dest = SLOT(&cred_child->cr_label); 939 940 mac_biba_copy_single(source, dest); 941 mac_biba_copy_range(source, dest); 942} 943 944static void 945mac_biba_execve_transition(struct ucred *old, struct ucred *new, 946 struct vnode *vp, struct mac *vnodelabel) 947{ 948 struct mac_biba *source, *dest; 949 950 source = SLOT(&old->cr_label); 951 dest = SLOT(&new->cr_label); 952 953 mac_biba_copy_single(source, dest); 954 mac_biba_copy_range(source, dest); 955} 956 957static int 958mac_biba_execve_will_transition(struct ucred *old, struct vnode *vp, 959 struct mac *vnodelabel) 960{ 961 962 return (0); 963} 964 965static void 966mac_biba_create_proc0(struct ucred *cred) 967{ 968 struct mac_biba *dest; 969 970 dest = SLOT(&cred->cr_label); 971 972 mac_biba_set_single(dest, MAC_BIBA_TYPE_EQUAL, 0); 973 mac_biba_set_range(dest, MAC_BIBA_TYPE_LOW, 0, MAC_BIBA_TYPE_HIGH, 0); 974} 975 976static void 977mac_biba_create_proc1(struct ucred *cred) 978{ 979 struct mac_biba *dest; 980 981 dest = SLOT(&cred->cr_label); 982 983 mac_biba_set_single(dest, MAC_BIBA_TYPE_HIGH, 0); 984 mac_biba_set_range(dest, MAC_BIBA_TYPE_LOW, 0, MAC_BIBA_TYPE_HIGH, 0); 985} 986 987static void 988mac_biba_relabel_cred(struct ucred *cred, struct label *newlabel) 989{ 990 struct mac_biba *source, *dest; 991 992 source = SLOT(newlabel); 993 dest = SLOT(&cred->cr_label); 994 995 mac_biba_copy_single(source, dest); 996 mac_biba_copy_range(source, dest); 997} 998 999/* 1000 * Access control checks. 1001 */ 1002static int 1003mac_biba_check_bpfdesc_receive(struct bpf_d *bpf_d, struct label *bpflabel, 1004 struct ifnet *ifnet, struct label *ifnetlabel) 1005{ 1006 struct mac_biba *a, *b; 1007 1008 if (!mac_biba_enabled) 1009 return (0); 1010 1011 a = SLOT(bpflabel); 1012 b = SLOT(ifnetlabel); 1013 1014 if (mac_biba_equal_single(a, b)) 1015 return (0); 1016 return (EACCES); 1017} 1018 1019static int 1020mac_biba_check_cred_relabel(struct ucred *cred, struct label *newlabel) 1021{ 1022 struct mac_biba *subj, *new; 1023 1024 subj = SLOT(&cred->cr_label); 1025 new = SLOT(newlabel); 1026 1027 if ((new->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAGS_BOTH) 1028 return (EINVAL); 1029 1030 /* 1031 * XXX: Allow processes with root privilege to set labels outside 1032 * their range, so suid things like "su" work. This WILL go away 1033 * when we figure out the 'correct' solution... 1034 */ 1035 if (!suser_cred(cred, 0)) 1036 return (0); 1037 1038 /* 1039 * The new single must be in the old range. 1040 */ 1041 if (!mac_biba_single_in_range(new, subj)) 1042 return (EPERM); 1043 1044 /* 1045 * The new range must be in the old range. 1046 */ 1047 if (!mac_biba_range_in_range(new, subj)) 1048 return (EPERM); 1049 1050 /* 1051 * XXX: Don't permit EQUAL in a label unless the subject has EQUAL. 1052 */ 1053 1054 return (0); 1055} 1056 1057static int 1058mac_biba_check_cred_visible(struct ucred *u1, struct ucred *u2) 1059{ 1060 struct mac_biba *subj, *obj; 1061 1062 if (!mac_biba_enabled) 1063 return (0); 1064 1065 subj = SLOT(&u1->cr_label); 1066 obj = SLOT(&u2->cr_label); 1067 1068 /* XXX: range */ 1069 if (!mac_biba_dominate_single(obj, subj)) 1070 return (ESRCH); 1071 1072 return (0); 1073} 1074 1075static int 1076mac_biba_check_ifnet_relabel(struct ucred *cred, struct ifnet *ifnet, 1077 struct label *ifnetlabel, struct label *newlabel) 1078{ 1079 struct mac_biba *subj, *new; 1080 1081 subj = SLOT(&cred->cr_label); 1082 new = SLOT(newlabel); 1083 1084 if ((new->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAGS_BOTH) 1085 return (EINVAL); 1086 1087 return (suser_cred(cred, 0)); 1088} 1089 1090static int 1091mac_biba_check_ifnet_transmit(struct ifnet *ifnet, struct label *ifnetlabel, 1092 struct mbuf *m, struct label *mbuflabel) 1093{ 1094 struct mac_biba *p, *i; 1095 1096 if (!mac_biba_enabled) 1097 return (0); 1098 1099 p = SLOT(mbuflabel); 1100 i = SLOT(ifnetlabel); 1101 1102 return (mac_biba_single_in_range(p, i) ? 0 : EACCES); 1103} 1104 1105static int 1106mac_biba_check_mount_stat(struct ucred *cred, struct mount *mp, 1107 struct label *mntlabel) 1108{ 1109 struct mac_biba *subj, *obj; 1110 1111 if (!mac_biba_enabled) 1112 return (0); 1113 1114 subj = SLOT(&cred->cr_label); 1115 obj = SLOT(mntlabel); 1116 1117 if (!mac_biba_dominate_single(obj, subj)) 1118 return (EACCES); 1119 1120 return (0); 1121} 1122 1123static int 1124mac_biba_check_pipe_ioctl(struct ucred *cred, struct pipe *pipe, 1125 struct label *pipelabel, unsigned long cmd, void /* caddr_t */ *data) 1126{ 1127 1128 if(!mac_biba_enabled) 1129 return (0); 1130 1131 /* XXX: This will be implemented soon... */ 1132 1133 return (0); 1134} 1135 1136static int 1137mac_biba_check_pipe_poll(struct ucred *cred, struct pipe *pipe, 1138 struct label *pipelabel) 1139{ 1140 struct mac_biba *subj, *obj; 1141 1142 if (!mac_biba_enabled) 1143 return (0); 1144 1145 subj = SLOT(&cred->cr_label); 1146 obj = SLOT((pipelabel)); 1147 1148 if (!mac_biba_dominate_single(obj, subj)) 1149 return (EACCES); 1150 1151 return (0); 1152} 1153 1154static int 1155mac_biba_check_pipe_read(struct ucred *cred, struct pipe *pipe, 1156 struct label *pipelabel) 1157{ 1158 struct mac_biba *subj, *obj; 1159 1160 if (!mac_biba_enabled) 1161 return (0); 1162 1163 subj = SLOT(&cred->cr_label); 1164 obj = SLOT((pipelabel)); 1165 1166 if (!mac_biba_dominate_single(obj, subj)) 1167 return (EACCES); 1168 1169 return (0); 1170} 1171 1172static int 1173mac_biba_check_pipe_relabel(struct ucred *cred, struct pipe *pipe, 1174 struct label *pipelabel, struct label *newlabel) 1175{ 1176 struct mac_biba *subj, *obj, *new; 1177 1178 new = SLOT(newlabel); 1179 subj = SLOT(&cred->cr_label); 1180 obj = SLOT(pipelabel); 1181 1182 if ((new->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAG_SINGLE) 1183 return (EINVAL); 1184 1185 /* 1186 * To relabel a pipe, the old pipe label must be in the subject 1187 * range. 1188 */ 1189 if (!mac_biba_single_in_range(obj, subj)) 1190 return (EPERM); 1191 1192 /* 1193 * To relabel a pipe, the new pipe label must be in the subject 1194 * range. 1195 */ 1196 if (!mac_biba_single_in_range(new, subj)) 1197 return (EPERM); 1198 1199 /* 1200 * XXX: Don't permit EQUAL in a label unless the subject has EQUAL. 1201 */ 1202 1203 return (0); 1204} 1205 1206static int 1207mac_biba_check_pipe_stat(struct ucred *cred, struct pipe *pipe, 1208 struct label *pipelabel) 1209{ 1210 struct mac_biba *subj, *obj; 1211 1212 if (!mac_biba_enabled) 1213 return (0); 1214 1215 subj = SLOT(&cred->cr_label); 1216 obj = SLOT((pipelabel)); 1217 1218 if (!mac_biba_dominate_single(obj, subj)) 1219 return (EACCES); 1220 1221 return (0); 1222} 1223 1224static int 1225mac_biba_check_pipe_write(struct ucred *cred, struct pipe *pipe, 1226 struct label *pipelabel) 1227{ 1228 struct mac_biba *subj, *obj; 1229 1230 if (!mac_biba_enabled) 1231 return (0); 1232 1233 subj = SLOT(&cred->cr_label); 1234 obj = SLOT((pipelabel)); 1235 1236 if (!mac_biba_dominate_single(subj, obj)) 1237 return (EACCES); 1238 1239 return (0); 1240} 1241 1242static int 1243mac_biba_check_proc_debug(struct ucred *cred, struct proc *proc) 1244{ 1245 struct mac_biba *subj, *obj; 1246 1247 if (!mac_biba_enabled) 1248 return (0); 1249 1250 subj = SLOT(&cred->cr_label); 1251 obj = SLOT(&proc->p_ucred->cr_label); 1252 1253 /* XXX: range checks */ 1254 if (!mac_biba_dominate_single(obj, subj)) 1255 return (ESRCH); 1256 if (!mac_biba_dominate_single(subj, obj)) 1257 return (EACCES); 1258 1259 return (0); 1260} 1261 1262static int 1263mac_biba_check_proc_sched(struct ucred *cred, struct proc *proc) 1264{ 1265 struct mac_biba *subj, *obj; 1266 1267 if (!mac_biba_enabled) 1268 return (0); 1269 1270 subj = SLOT(&cred->cr_label); 1271 obj = SLOT(&proc->p_ucred->cr_label); 1272 1273 /* XXX: range checks */ 1274 if (!mac_biba_dominate_single(obj, subj)) 1275 return (ESRCH); 1276 if (!mac_biba_dominate_single(subj, obj)) 1277 return (EACCES); 1278 1279 return (0); 1280} 1281 1282static int 1283mac_biba_check_proc_signal(struct ucred *cred, struct proc *proc, int signum) 1284{ 1285 struct mac_biba *subj, *obj; 1286 1287 if (!mac_biba_enabled) 1288 return (0); 1289 1290 subj = SLOT(&cred->cr_label); 1291 obj = SLOT(&proc->p_ucred->cr_label); 1292 1293 /* XXX: range checks */ 1294 if (!mac_biba_dominate_single(obj, subj)) 1295 return (ESRCH); 1296 if (!mac_biba_dominate_single(subj, obj)) 1297 return (EACCES); 1298 1299 return (0); 1300} 1301 1302static int 1303mac_biba_check_socket_deliver(struct socket *so, struct label *socketlabel, 1304 struct mbuf *m, struct label *mbuflabel) 1305{ 1306 struct mac_biba *p, *s; 1307 1308 if (!mac_biba_enabled) 1309 return (0); 1310 1311 p = SLOT(mbuflabel); 1312 s = SLOT(socketlabel); 1313 1314 return (mac_biba_equal_single(p, s) ? 0 : EACCES); 1315} 1316 1317static int 1318mac_biba_check_socket_relabel(struct ucred *cred, struct socket *socket, 1319 struct label *socketlabel, struct label *newlabel) 1320{ 1321 struct mac_biba *subj, *obj, *new; 1322 1323 new = SLOT(newlabel); 1324 subj = SLOT(&cred->cr_label); 1325 obj = SLOT(socketlabel); 1326 1327 if ((new->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAG_SINGLE) 1328 return (EINVAL); 1329 1330 /* 1331 * To relabel a socket, the old socket label must be in the subject 1332 * range. 1333 */ 1334 if (!mac_biba_single_in_range(obj, subj)) 1335 return (EPERM); 1336 1337 /* 1338 * To relabel a socket, the new socket label must be in the subject 1339 * range. 1340 */ 1341 if (!mac_biba_single_in_range(new, subj)) 1342 return (EPERM); 1343 1344 /* 1345 * XXX: Don't permit EQUAL in a label unless the subject has EQUAL. 1346 */ 1347 1348 return (0); 1349} 1350 1351static int 1352mac_biba_check_socket_visible(struct ucred *cred, struct socket *socket, 1353 struct label *socketlabel) 1354{ 1355 struct mac_biba *subj, *obj; 1356 1357 subj = SLOT(&cred->cr_label); 1358 obj = SLOT(socketlabel); 1359 1360 if (!mac_biba_dominate_single(obj, subj)) 1361 return (ENOENT); 1362 1363 return (0); 1364} 1365 1366static int 1367mac_biba_check_vnode_access(struct ucred *cred, struct vnode *vp, 1368 struct label *label, mode_t flags) 1369{ 1370 1371 return (mac_biba_check_vnode_open(cred, vp, label, flags)); 1372} 1373 1374static int 1375mac_biba_check_vnode_chdir(struct ucred *cred, struct vnode *dvp, 1376 struct label *dlabel) 1377{ 1378 struct mac_biba *subj, *obj; 1379 1380 if (!mac_biba_enabled) 1381 return (0); 1382 1383 subj = SLOT(&cred->cr_label); 1384 obj = SLOT(dlabel); 1385 1386 if (!mac_biba_dominate_single(obj, subj)) 1387 return (EACCES); 1388 1389 return (0); 1390} 1391 1392static int 1393mac_biba_check_vnode_chroot(struct ucred *cred, struct vnode *dvp, 1394 struct label *dlabel) 1395{ 1396 struct mac_biba *subj, *obj; 1397 1398 if (!mac_biba_enabled) 1399 return (0); 1400 1401 subj = SLOT(&cred->cr_label); 1402 obj = SLOT(dlabel); 1403 1404 if (!mac_biba_dominate_single(obj, subj)) 1405 return (EACCES); 1406 1407 return (0); 1408} 1409 1410static int 1411mac_biba_check_vnode_create(struct ucred *cred, struct vnode *dvp, 1412 struct label *dlabel, struct componentname *cnp, struct vattr *vap) 1413{ 1414 struct mac_biba *subj, *obj; 1415 1416 if (!mac_biba_enabled) 1417 return (0); 1418 1419 subj = SLOT(&cred->cr_label); 1420 obj = SLOT(dlabel); 1421 1422 if (!mac_biba_dominate_single(subj, obj)) 1423 return (EACCES); 1424 1425 return (0); 1426} 1427 1428static int 1429mac_biba_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 1430 struct label *dlabel, struct vnode *vp, struct label *label, 1431 struct componentname *cnp) 1432{ 1433 struct mac_biba *subj, *obj; 1434 1435 if (!mac_biba_enabled) 1436 return (0); 1437 1438 subj = SLOT(&cred->cr_label); 1439 obj = SLOT(dlabel); 1440 1441 if (!mac_biba_dominate_single(subj, obj)) 1442 return (EACCES); 1443 1444 obj = SLOT(label); 1445 1446 if (!mac_biba_dominate_single(subj, obj)) 1447 return (EACCES); 1448 1449 return (0); 1450} 1451 1452static int 1453mac_biba_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 1454 struct label *label, acl_type_t type) 1455{ 1456 struct mac_biba *subj, *obj; 1457 1458 if (!mac_biba_enabled) 1459 return (0); 1460 1461 subj = SLOT(&cred->cr_label); 1462 obj = SLOT(label); 1463 1464 if (!mac_biba_dominate_single(subj, obj)) 1465 return (EACCES); 1466 1467 return (0); 1468} 1469 1470static int 1471mac_biba_check_vnode_exec(struct ucred *cred, struct vnode *vp, 1472 struct label *label) 1473{ 1474 struct mac_biba *subj, *obj; 1475 1476 if (!mac_biba_enabled) 1477 return (0); 1478 1479 subj = SLOT(&cred->cr_label); 1480 obj = SLOT(label); 1481 1482 if (!mac_biba_dominate_single(obj, subj)) 1483 return (EACCES); 1484 1485 return (0); 1486} 1487 1488static int 1489mac_biba_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 1490 struct label *label, acl_type_t type) 1491{ 1492 struct mac_biba *subj, *obj; 1493 1494 if (!mac_biba_enabled) 1495 return (0); 1496 1497 subj = SLOT(&cred->cr_label); 1498 obj = SLOT(label); 1499 1500 if (!mac_biba_dominate_single(obj, subj)) 1501 return (EACCES); 1502 1503 return (0); 1504} 1505 1506static int 1507mac_biba_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 1508 struct label *label, int attrnamespace, const char *name, struct uio *uio) 1509{ 1510 struct mac_biba *subj, *obj; 1511 1512 if (!mac_biba_enabled) 1513 return (0); 1514 1515 subj = SLOT(&cred->cr_label); 1516 obj = SLOT(label); 1517 1518 if (!mac_biba_dominate_single(obj, subj)) 1519 return (EACCES); 1520 1521 return (0); 1522} 1523 1524static int 1525mac_biba_check_vnode_link(struct ucred *cred, struct vnode *dvp, 1526 struct label *dlabel, struct vnode *vp, struct label *label, 1527 struct componentname *cnp) 1528{ 1529 struct mac_biba *subj, *obj; 1530 1531 if (!mac_biba_enabled) 1532 return (0); 1533 1534 subj = SLOT(&cred->cr_label); 1535 obj = SLOT(dlabel); 1536 1537 if (!mac_biba_dominate_single(subj, obj)) 1538 return (EACCES); 1539 1540 obj = SLOT(label); 1541 1542 if (!mac_biba_dominate_single(subj, obj)) 1543 return (EACCES); 1544 1545 return (0); 1546} 1547 1548static int 1549mac_biba_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 1550 struct label *dlabel, struct componentname *cnp) 1551{ 1552 struct mac_biba *subj, *obj; 1553 1554 if (!mac_biba_enabled) 1555 return (0); 1556 1557 subj = SLOT(&cred->cr_label); 1558 obj = SLOT(dlabel); 1559 1560 if (!mac_biba_dominate_single(obj, subj)) 1561 return (EACCES); 1562 1563 return (0); 1564} 1565 1566static int 1567mac_biba_check_vnode_mmap(struct ucred *cred, struct vnode *vp, 1568 struct label *label, int prot) 1569{ 1570 struct mac_biba *subj, *obj; 1571 1572 /* 1573 * Rely on the use of open()-time protections to handle 1574 * non-revocation cases. 1575 */ 1576 if (!mac_biba_enabled || !mac_biba_revocation_enabled) 1577 return (0); 1578 1579 subj = SLOT(&cred->cr_label); 1580 obj = SLOT(label); 1581 1582 if (prot & (VM_PROT_READ | VM_PROT_EXECUTE)) { 1583 if (!mac_biba_dominate_single(obj, subj)) 1584 return (EACCES); 1585 } 1586 if (prot & VM_PROT_WRITE) { 1587 if (!mac_biba_dominate_single(subj, obj)) 1588 return (EACCES); 1589 } 1590 1591 return (0); 1592} 1593 1594static int 1595mac_biba_check_vnode_open(struct ucred *cred, struct vnode *vp, 1596 struct label *vnodelabel, mode_t acc_mode) 1597{ 1598 struct mac_biba *subj, *obj; 1599 1600 if (!mac_biba_enabled) 1601 return (0); 1602 1603 subj = SLOT(&cred->cr_label); 1604 obj = SLOT(vnodelabel); 1605 1606 /* XXX privilege override for admin? */ 1607 if (acc_mode & (VREAD | VEXEC | VSTAT)) { 1608 if (!mac_biba_dominate_single(obj, subj)) 1609 return (EACCES); 1610 } 1611 if (acc_mode & (VWRITE | VAPPEND | VADMIN)) { 1612 if (!mac_biba_dominate_single(subj, obj)) 1613 return (EACCES); 1614 } 1615 1616 return (0); 1617} 1618 1619static int 1620mac_biba_check_vnode_poll(struct ucred *active_cred, struct ucred *file_cred, 1621 struct vnode *vp, struct label *label) 1622{ 1623 struct mac_biba *subj, *obj; 1624 1625 if (!mac_biba_enabled || !mac_biba_revocation_enabled) 1626 return (0); 1627 1628 subj = SLOT(&active_cred->cr_label); 1629 obj = SLOT(label); 1630 1631 if (!mac_biba_dominate_single(obj, subj)) 1632 return (EACCES); 1633 1634 return (0); 1635} 1636 1637static int 1638mac_biba_check_vnode_read(struct ucred *active_cred, struct ucred *file_cred, 1639 struct vnode *vp, struct label *label) 1640{ 1641 struct mac_biba *subj, *obj; 1642 1643 if (!mac_biba_enabled || !mac_biba_revocation_enabled) 1644 return (0); 1645 1646 subj = SLOT(&active_cred->cr_label); 1647 obj = SLOT(label); 1648 1649 if (!mac_biba_dominate_single(obj, subj)) 1650 return (EACCES); 1651 1652 return (0); 1653} 1654 1655static int 1656mac_biba_check_vnode_readdir(struct ucred *cred, struct vnode *dvp, 1657 struct label *dlabel) 1658{ 1659 struct mac_biba *subj, *obj; 1660 1661 if (!mac_biba_enabled) 1662 return (0); 1663 1664 subj = SLOT(&cred->cr_label); 1665 obj = SLOT(dlabel); 1666 1667 if (!mac_biba_dominate_single(obj, subj)) 1668 return (EACCES); 1669 1670 return (0); 1671} 1672 1673static int 1674mac_biba_check_vnode_readlink(struct ucred *cred, struct vnode *vp, 1675 struct label *label) 1676{ 1677 struct mac_biba *subj, *obj; 1678 1679 if (!mac_biba_enabled) 1680 return (0); 1681 1682 subj = SLOT(&cred->cr_label); 1683 obj = SLOT(label); 1684 1685 if (!mac_biba_dominate_single(obj, subj)) 1686 return (EACCES); 1687 1688 return (0); 1689} 1690 1691static int 1692mac_biba_check_vnode_relabel(struct ucred *cred, struct vnode *vp, 1693 struct label *vnodelabel, struct label *newlabel) 1694{ 1695 struct mac_biba *old, *new, *subj; 1696 1697 old = SLOT(vnodelabel); 1698 new = SLOT(newlabel); 1699 subj = SLOT(&cred->cr_label); 1700 1701 if ((new->mb_flags & MAC_BIBA_FLAGS_BOTH) != MAC_BIBA_FLAG_SINGLE) 1702 return (EINVAL); 1703 1704 /* 1705 * To relabel a vnode, the old vnode label must be in the subject 1706 * range. 1707 */ 1708 if (!mac_biba_single_in_range(old, subj)) 1709 return (EPERM); 1710 1711 /* 1712 * To relabel a vnode, the new vnode label must be in the subject 1713 * range. 1714 */ 1715 if (!mac_biba_single_in_range(new, subj)) 1716 return (EPERM); 1717 1718 /* 1719 * XXX: Don't permit EQUAL in a label unless the subject has EQUAL. 1720 */ 1721 1722 return (suser_cred(cred, 0)); 1723} 1724 1725static int 1726mac_biba_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 1727 struct label *dlabel, struct vnode *vp, struct label *label, 1728 struct componentname *cnp) 1729{ 1730 struct mac_biba *subj, *obj; 1731 1732 if (!mac_biba_enabled) 1733 return (0); 1734 1735 subj = SLOT(&cred->cr_label); 1736 obj = SLOT(dlabel); 1737 1738 if (!mac_biba_dominate_single(subj, obj)) 1739 return (EACCES); 1740 1741 obj = SLOT(label); 1742 1743 if (!mac_biba_dominate_single(subj, obj)) 1744 return (EACCES); 1745 1746 return (0); 1747} 1748 1749static int 1750mac_biba_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 1751 struct label *dlabel, struct vnode *vp, struct label *label, int samedir, 1752 struct componentname *cnp) 1753{ 1754 struct mac_biba *subj, *obj; 1755 1756 if (!mac_biba_enabled) 1757 return (0); 1758 1759 subj = SLOT(&cred->cr_label); 1760 obj = SLOT(dlabel); 1761 1762 if (!mac_biba_dominate_single(subj, obj)) 1763 return (EACCES); 1764 1765 if (vp != NULL) { 1766 obj = SLOT(label); 1767 1768 if (!mac_biba_dominate_single(subj, obj)) 1769 return (EACCES); 1770 } 1771 1772 return (0); 1773} 1774 1775static int 1776mac_biba_check_vnode_revoke(struct ucred *cred, struct vnode *vp, 1777 struct label *label) 1778{ 1779 struct mac_biba *subj, *obj; 1780 1781 if (!mac_biba_enabled) 1782 return (0); 1783 1784 subj = SLOT(&cred->cr_label); 1785 obj = SLOT(label); 1786 1787 if (!mac_biba_dominate_single(subj, obj)) 1788 return (EACCES); 1789 1790 return (0); 1791} 1792 1793static int 1794mac_biba_check_vnode_setacl(struct ucred *cred, struct vnode *vp, 1795 struct label *label, acl_type_t type, struct acl *acl) 1796{ 1797 struct mac_biba *subj, *obj; 1798 1799 if (!mac_biba_enabled) 1800 return (0); 1801 1802 subj = SLOT(&cred->cr_label); 1803 obj = SLOT(label); 1804 1805 if (!mac_biba_dominate_single(subj, obj)) 1806 return (EACCES); 1807 1808 return (0); 1809} 1810 1811static int 1812mac_biba_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 1813 struct label *vnodelabel, int attrnamespace, const char *name, 1814 struct uio *uio) 1815{ 1816 struct mac_biba *subj, *obj; 1817 1818 if (!mac_biba_enabled) 1819 return (0); 1820 1821 subj = SLOT(&cred->cr_label); 1822 obj = SLOT(vnodelabel); 1823 1824 if (!mac_biba_dominate_single(subj, obj)) 1825 return (EACCES); 1826 1827 /* XXX: protect the MAC EA in a special way? */ 1828 1829 return (0); 1830} 1831 1832static int 1833mac_biba_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 1834 struct label *vnodelabel, u_long flags) 1835{ 1836 struct mac_biba *subj, *obj; 1837 1838 if (!mac_biba_enabled) 1839 return (0); 1840 1841 subj = SLOT(&cred->cr_label); 1842 obj = SLOT(vnodelabel); 1843 1844 if (!mac_biba_dominate_single(subj, obj)) 1845 return (EACCES); 1846 1847 return (0); 1848} 1849 1850static int 1851mac_biba_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 1852 struct label *vnodelabel, mode_t mode) 1853{ 1854 struct mac_biba *subj, *obj; 1855 1856 if (!mac_biba_enabled) 1857 return (0); 1858 1859 subj = SLOT(&cred->cr_label); 1860 obj = SLOT(vnodelabel); 1861 1862 if (!mac_biba_dominate_single(subj, obj)) 1863 return (EACCES); 1864 1865 return (0); 1866} 1867 1868static int 1869mac_biba_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 1870 struct label *vnodelabel, uid_t uid, gid_t gid) 1871{ 1872 struct mac_biba *subj, *obj; 1873 1874 if (!mac_biba_enabled) 1875 return (0); 1876 1877 subj = SLOT(&cred->cr_label); 1878 obj = SLOT(vnodelabel); 1879 1880 if (!mac_biba_dominate_single(subj, obj)) 1881 return (EACCES); 1882 1883 return (0); 1884} 1885 1886static int 1887mac_biba_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 1888 struct label *vnodelabel, struct timespec atime, struct timespec mtime) 1889{ 1890 struct mac_biba *subj, *obj; 1891 1892 if (!mac_biba_enabled) 1893 return (0); 1894 1895 subj = SLOT(&cred->cr_label); 1896 obj = SLOT(vnodelabel); 1897 1898 if (!mac_biba_dominate_single(subj, obj)) 1899 return (EACCES); 1900 1901 return (0); 1902} 1903 1904static int 1905mac_biba_check_vnode_stat(struct ucred *active_cred, struct ucred *file_cred, 1906 struct vnode *vp, struct label *vnodelabel) 1907{ 1908 struct mac_biba *subj, *obj; 1909 1910 if (!mac_biba_enabled) 1911 return (0); 1912 1913 subj = SLOT(&active_cred->cr_label); 1914 obj = SLOT(vnodelabel); 1915 1916 if (!mac_biba_dominate_single(obj, subj)) 1917 return (EACCES); 1918 1919 return (0); 1920} 1921 1922static int 1923mac_biba_check_vnode_write(struct ucred *active_cred, 1924 struct ucred *file_cred, struct vnode *vp, struct label *label) 1925{ 1926 struct mac_biba *subj, *obj; 1927 1928 if (!mac_biba_enabled || !mac_biba_revocation_enabled) 1929 return (0); 1930 1931 subj = SLOT(&active_cred->cr_label); 1932 obj = SLOT(label); 1933 1934 if (!mac_biba_dominate_single(subj, obj)) 1935 return (EACCES); 1936 1937 return (0); 1938} 1939 1940static struct mac_policy_op_entry mac_biba_ops[] = 1941{ 1942 { MAC_DESTROY, 1943 (macop_t)mac_biba_destroy }, 1944 { MAC_INIT, 1945 (macop_t)mac_biba_init }, 1946 { MAC_INIT_BPFDESC_LABEL, 1947 (macop_t)mac_biba_init_label }, 1948 { MAC_INIT_CRED_LABEL, 1949 (macop_t)mac_biba_init_label }, 1950 { MAC_INIT_DEVFSDIRENT_LABEL, 1951 (macop_t)mac_biba_init_label }, 1952 { MAC_INIT_IFNET_LABEL, 1953 (macop_t)mac_biba_init_label }, 1954 { MAC_INIT_IPQ_LABEL, 1955 (macop_t)mac_biba_init_label }, 1956 { MAC_INIT_MBUF_LABEL, 1957 (macop_t)mac_biba_init_label_waitcheck }, 1958 { MAC_INIT_MOUNT_LABEL, 1959 (macop_t)mac_biba_init_label }, 1960 { MAC_INIT_MOUNT_FS_LABEL, 1961 (macop_t)mac_biba_init_label }, 1962 { MAC_INIT_PIPE_LABEL, 1963 (macop_t)mac_biba_init_label }, 1964 { MAC_INIT_SOCKET_LABEL, 1965 (macop_t)mac_biba_init_label_waitcheck }, 1966 { MAC_INIT_SOCKET_PEER_LABEL, 1967 (macop_t)mac_biba_init_label_waitcheck }, 1968 { MAC_INIT_TEMP_LABEL, 1969 (macop_t)mac_biba_init_label }, 1970 { MAC_INIT_VNODE_LABEL, 1971 (macop_t)mac_biba_init_label }, 1972 { MAC_DESTROY_BPFDESC_LABEL, 1973 (macop_t)mac_biba_destroy_label }, 1974 { MAC_DESTROY_CRED_LABEL, 1975 (macop_t)mac_biba_destroy_label }, 1976 { MAC_DESTROY_DEVFSDIRENT_LABEL, 1977 (macop_t)mac_biba_destroy_label }, 1978 { MAC_DESTROY_IFNET_LABEL, 1979 (macop_t)mac_biba_destroy_label }, 1980 { MAC_DESTROY_IPQ_LABEL, 1981 (macop_t)mac_biba_destroy_label }, 1982 { MAC_DESTROY_MBUF_LABEL, 1983 (macop_t)mac_biba_destroy_label }, 1984 { MAC_DESTROY_MOUNT_LABEL, 1985 (macop_t)mac_biba_destroy_label }, 1986 { MAC_DESTROY_MOUNT_FS_LABEL, 1987 (macop_t)mac_biba_destroy_label }, 1988 { MAC_DESTROY_PIPE_LABEL, 1989 (macop_t)mac_biba_destroy_label }, 1990 { MAC_DESTROY_SOCKET_LABEL, 1991 (macop_t)mac_biba_destroy_label }, 1992 { MAC_DESTROY_SOCKET_PEER_LABEL, 1993 (macop_t)mac_biba_destroy_label }, 1994 { MAC_DESTROY_TEMP_LABEL, 1995 (macop_t)mac_biba_destroy_label }, 1996 { MAC_DESTROY_VNODE_LABEL, 1997 (macop_t)mac_biba_destroy_label }, 1998 { MAC_EXTERNALIZE, 1999 (macop_t)mac_biba_externalize }, 2000 { MAC_INTERNALIZE, 2001 (macop_t)mac_biba_internalize }, 2002 { MAC_CREATE_DEVFS_DEVICE, 2003 (macop_t)mac_biba_create_devfs_device }, 2004 { MAC_CREATE_DEVFS_DIRECTORY, 2005 (macop_t)mac_biba_create_devfs_directory }, 2006 { MAC_CREATE_DEVFS_SYMLINK, 2007 (macop_t)mac_biba_create_devfs_symlink }, 2008 { MAC_CREATE_DEVFS_VNODE, 2009 (macop_t)mac_biba_create_devfs_vnode }, 2010 { MAC_CREATE_VNODE, 2011 (macop_t)mac_biba_create_vnode }, 2012 { MAC_CREATE_MOUNT, 2013 (macop_t)mac_biba_create_mount }, 2014 { MAC_CREATE_ROOT_MOUNT, 2015 (macop_t)mac_biba_create_root_mount }, 2016 { MAC_RELABEL_VNODE, 2017 (macop_t)mac_biba_relabel_vnode }, 2018 { MAC_UPDATE_DEVFSDIRENT, 2019 (macop_t)mac_biba_update_devfsdirent }, 2020 { MAC_UPDATE_PROCFSVNODE, 2021 (macop_t)mac_biba_update_procfsvnode }, 2022 { MAC_UPDATE_VNODE_FROM_EXTERNALIZED, 2023 (macop_t)mac_biba_update_vnode_from_externalized }, 2024 { MAC_UPDATE_VNODE_FROM_MOUNT, 2025 (macop_t)mac_biba_update_vnode_from_mount }, 2026 { MAC_CREATE_MBUF_FROM_SOCKET, 2027 (macop_t)mac_biba_create_mbuf_from_socket }, 2028 { MAC_CREATE_PIPE, 2029 (macop_t)mac_biba_create_pipe }, 2030 { MAC_CREATE_SOCKET, 2031 (macop_t)mac_biba_create_socket }, 2032 { MAC_CREATE_SOCKET_FROM_SOCKET, 2033 (macop_t)mac_biba_create_socket_from_socket }, 2034 { MAC_RELABEL_PIPE, 2035 (macop_t)mac_biba_relabel_pipe }, 2036 { MAC_RELABEL_SOCKET, 2037 (macop_t)mac_biba_relabel_socket }, 2038 { MAC_SET_SOCKET_PEER_FROM_MBUF, 2039 (macop_t)mac_biba_set_socket_peer_from_mbuf }, 2040 { MAC_SET_SOCKET_PEER_FROM_SOCKET, 2041 (macop_t)mac_biba_set_socket_peer_from_socket }, 2042 { MAC_CREATE_BPFDESC, 2043 (macop_t)mac_biba_create_bpfdesc }, 2044 { MAC_CREATE_DATAGRAM_FROM_IPQ, 2045 (macop_t)mac_biba_create_datagram_from_ipq }, 2046 { MAC_CREATE_FRAGMENT, 2047 (macop_t)mac_biba_create_fragment }, 2048 { MAC_CREATE_IFNET, 2049 (macop_t)mac_biba_create_ifnet }, 2050 { MAC_CREATE_IPQ, 2051 (macop_t)mac_biba_create_ipq }, 2052 { MAC_CREATE_MBUF_FROM_MBUF, 2053 (macop_t)mac_biba_create_mbuf_from_mbuf }, 2054 { MAC_CREATE_MBUF_LINKLAYER, 2055 (macop_t)mac_biba_create_mbuf_linklayer }, 2056 { MAC_CREATE_MBUF_FROM_BPFDESC, 2057 (macop_t)mac_biba_create_mbuf_from_bpfdesc }, 2058 { MAC_CREATE_MBUF_FROM_IFNET, 2059 (macop_t)mac_biba_create_mbuf_from_ifnet }, 2060 { MAC_CREATE_MBUF_MULTICAST_ENCAP, 2061 (macop_t)mac_biba_create_mbuf_multicast_encap }, 2062 { MAC_CREATE_MBUF_NETLAYER, 2063 (macop_t)mac_biba_create_mbuf_netlayer }, 2064 { MAC_FRAGMENT_MATCH, 2065 (macop_t)mac_biba_fragment_match }, 2066 { MAC_RELABEL_IFNET, 2067 (macop_t)mac_biba_relabel_ifnet }, 2068 { MAC_UPDATE_IPQ, 2069 (macop_t)mac_biba_update_ipq }, 2070 { MAC_CREATE_CRED, 2071 (macop_t)mac_biba_create_cred }, 2072 { MAC_EXECVE_TRANSITION, 2073 (macop_t)mac_biba_execve_transition }, 2074 { MAC_EXECVE_WILL_TRANSITION, 2075 (macop_t)mac_biba_execve_will_transition }, 2076 { MAC_CREATE_PROC0, 2077 (macop_t)mac_biba_create_proc0 }, 2078 { MAC_CREATE_PROC1, 2079 (macop_t)mac_biba_create_proc1 }, 2080 { MAC_RELABEL_CRED, 2081 (macop_t)mac_biba_relabel_cred }, 2082 { MAC_CHECK_BPFDESC_RECEIVE, 2083 (macop_t)mac_biba_check_bpfdesc_receive }, 2084 { MAC_CHECK_CRED_RELABEL, 2085 (macop_t)mac_biba_check_cred_relabel }, 2086 { MAC_CHECK_CRED_VISIBLE, 2087 (macop_t)mac_biba_check_cred_visible }, 2088 { MAC_CHECK_IFNET_RELABEL, 2089 (macop_t)mac_biba_check_ifnet_relabel }, 2090 { MAC_CHECK_IFNET_TRANSMIT, 2091 (macop_t)mac_biba_check_ifnet_transmit }, 2092 { MAC_CHECK_MOUNT_STAT, 2093 (macop_t)mac_biba_check_mount_stat }, 2094 { MAC_CHECK_PIPE_IOCTL, 2095 (macop_t)mac_biba_check_pipe_ioctl }, 2096 { MAC_CHECK_PIPE_POLL, 2097 (macop_t)mac_biba_check_pipe_poll }, 2098 { MAC_CHECK_PIPE_READ, 2099 (macop_t)mac_biba_check_pipe_read }, 2100 { MAC_CHECK_PIPE_RELABEL, 2101 (macop_t)mac_biba_check_pipe_relabel }, 2102 { MAC_CHECK_PIPE_STAT, 2103 (macop_t)mac_biba_check_pipe_stat }, 2104 { MAC_CHECK_PIPE_WRITE, 2105 (macop_t)mac_biba_check_pipe_write }, 2106 { MAC_CHECK_PROC_DEBUG, 2107 (macop_t)mac_biba_check_proc_debug }, 2108 { MAC_CHECK_PROC_SCHED, 2109 (macop_t)mac_biba_check_proc_sched }, 2110 { MAC_CHECK_PROC_SIGNAL, 2111 (macop_t)mac_biba_check_proc_signal }, 2112 { MAC_CHECK_SOCKET_DELIVER, 2113 (macop_t)mac_biba_check_socket_deliver }, 2114 { MAC_CHECK_SOCKET_RELABEL, 2115 (macop_t)mac_biba_check_socket_relabel }, 2116 { MAC_CHECK_SOCKET_VISIBLE, 2117 (macop_t)mac_biba_check_socket_visible }, 2118 { MAC_CHECK_VNODE_ACCESS, 2119 (macop_t)mac_biba_check_vnode_access }, 2120 { MAC_CHECK_VNODE_CHDIR, 2121 (macop_t)mac_biba_check_vnode_chdir }, 2122 { MAC_CHECK_VNODE_CHROOT, 2123 (macop_t)mac_biba_check_vnode_chroot }, 2124 { MAC_CHECK_VNODE_CREATE, 2125 (macop_t)mac_biba_check_vnode_create }, 2126 { MAC_CHECK_VNODE_DELETE, 2127 (macop_t)mac_biba_check_vnode_delete }, 2128 { MAC_CHECK_VNODE_DELETEACL, 2129 (macop_t)mac_biba_check_vnode_deleteacl }, 2130 { MAC_CHECK_VNODE_EXEC, 2131 (macop_t)mac_biba_check_vnode_exec }, 2132 { MAC_CHECK_VNODE_GETACL, 2133 (macop_t)mac_biba_check_vnode_getacl }, 2134 { MAC_CHECK_VNODE_GETEXTATTR, 2135 (macop_t)mac_biba_check_vnode_getextattr }, 2136 { MAC_CHECK_VNODE_LINK, 2137 (macop_t)mac_biba_check_vnode_link }, 2138 { MAC_CHECK_VNODE_LOOKUP, 2139 (macop_t)mac_biba_check_vnode_lookup }, 2140 { MAC_CHECK_VNODE_MMAP, 2141 (macop_t)mac_biba_check_vnode_mmap }, 2142 { MAC_CHECK_VNODE_MPROTECT, 2143 (macop_t)mac_biba_check_vnode_mmap }, 2144 { MAC_CHECK_VNODE_OPEN, 2145 (macop_t)mac_biba_check_vnode_open }, 2146 { MAC_CHECK_VNODE_POLL, 2147 (macop_t)mac_biba_check_vnode_poll }, 2148 { MAC_CHECK_VNODE_READ, 2149 (macop_t)mac_biba_check_vnode_read }, 2150 { MAC_CHECK_VNODE_READDIR, 2151 (macop_t)mac_biba_check_vnode_readdir }, 2152 { MAC_CHECK_VNODE_READLINK, 2153 (macop_t)mac_biba_check_vnode_readlink }, 2154 { MAC_CHECK_VNODE_RELABEL, 2155 (macop_t)mac_biba_check_vnode_relabel }, 2156 { MAC_CHECK_VNODE_RENAME_FROM, 2157 (macop_t)mac_biba_check_vnode_rename_from }, 2158 { MAC_CHECK_VNODE_RENAME_TO, 2159 (macop_t)mac_biba_check_vnode_rename_to }, 2160 { MAC_CHECK_VNODE_REVOKE, 2161 (macop_t)mac_biba_check_vnode_revoke }, 2162 { MAC_CHECK_VNODE_SETACL, 2163 (macop_t)mac_biba_check_vnode_setacl }, 2164 { MAC_CHECK_VNODE_SETEXTATTR, 2165 (macop_t)mac_biba_check_vnode_setextattr }, 2166 { MAC_CHECK_VNODE_SETFLAGS, 2167 (macop_t)mac_biba_check_vnode_setflags }, 2168 { MAC_CHECK_VNODE_SETMODE, 2169 (macop_t)mac_biba_check_vnode_setmode }, 2170 { MAC_CHECK_VNODE_SETOWNER, 2171 (macop_t)mac_biba_check_vnode_setowner }, 2172 { MAC_CHECK_VNODE_SETUTIMES, 2173 (macop_t)mac_biba_check_vnode_setutimes }, 2174 { MAC_CHECK_VNODE_STAT, 2175 (macop_t)mac_biba_check_vnode_stat }, 2176 { MAC_CHECK_VNODE_WRITE, 2177 (macop_t)mac_biba_check_vnode_write }, 2178 { MAC_OP_LAST, NULL } 2179}; 2180 2181MAC_POLICY_SET(mac_biba_ops, trustedbsd_mac_biba, "TrustedBSD MAC/Biba", 2182 MPC_LOADTIME_FLAG_NOTLATE, &mac_biba_slot); 2183