1 /*- 2 * Copyright (c) 2005 Tom Rhodes 3 * Copyright (c) 1999-2002 Robert N. M. Watson 4 * Copyright (c) 2001-2005 Networks Associates Technology, Inc. 5 * All rights reserved. 6 * 7 * This software was developed by Robert Watson for the TrustedBSD Project. 8 * It was later enhanced by Tom Rhodes for the TrustedBSD Project. 9 * 10 * This software was developed for the FreeBSD Project in part by Network 11 * Associates Laboratories, the Security Research Division of Network 12 * Associates, Inc. under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), 13 * as part of the DARPA CHATS research program. 14 * 15 * Redistribution and use in source and binary forms, with or without 16 * modification, are permitted provided that the following conditions 17 * are met: 18 * 1. Redistributions of source code must retain the above copyright 19 * notice, this list of conditions and the following disclaimer. 20 * 2. Redistributions in binary form must reproduce the above copyright 21 * notice, this list of conditions and the following disclaimer in the 22 * documentation and/or other materials provided with the distribution. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 * 36 * $FreeBSD$ 37 */ 38 39 /* 40 * Developed by the TrustedBSD Project. 41 * "BSD Extended" MAC policy, allowing the administrator to impose 42 * mandatory rules regarding users and some system objects. 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/jail.h> 51 #include <sys/lock.h> 52 #include <sys/mac.h> 53 #include <sys/malloc.h> 54 #include <sys/mount.h> 55 #include <sys/mutex.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/sysctl.h> 65 #include <sys/syslog.h> 66 #include <sys/ucred.h> 67 68 #include <net/bpfdesc.h> 69 #include <net/if.h> 70 #include <net/if_types.h> 71 #include <net/if_var.h> 72 73 #include <vm/vm.h> 74 75 #include <sys/mac_policy.h> 76 77 #include <security/mac_bsdextended/mac_bsdextended.h> 78 79 static struct mtx mac_bsdextended_mtx; 80 81 SYSCTL_DECL(_security_mac); 82 83 SYSCTL_NODE(_security_mac, OID_AUTO, bsdextended, CTLFLAG_RW, 0, 84 "TrustedBSD extended BSD MAC policy controls"); 85 86 static int mac_bsdextended_enabled = 1; 87 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, enabled, CTLFLAG_RW, 88 &mac_bsdextended_enabled, 0, "Enforce extended BSD policy"); 89 TUNABLE_INT("security.mac.bsdextended.enabled", &mac_bsdextended_enabled); 90 91 MALLOC_DEFINE(M_MACBSDEXTENDED, "mac_bsdextended", "BSD Extended MAC rule"); 92 93 #define MAC_BSDEXTENDED_MAXRULES 250 94 static struct mac_bsdextended_rule *rules[MAC_BSDEXTENDED_MAXRULES]; 95 static int rule_count = 0; 96 static int rule_slots = 0; 97 static int rule_version = MB_VERSION; 98 99 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_count, CTLFLAG_RD, 100 &rule_count, 0, "Number of defined rules\n"); 101 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_slots, CTLFLAG_RD, 102 &rule_slots, 0, "Number of used rule slots\n"); 103 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_version, CTLFLAG_RD, 104 &rule_version, 0, "Version number for API\n"); 105 106 /* 107 * This is just used for logging purposes, eventually we would like 108 * to log much more then failed requests. 109 */ 110 static int mac_bsdextended_logging; 111 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, logging, CTLFLAG_RW, 112 &mac_bsdextended_logging, 0, "Log failed authorization requests"); 113 114 /* 115 * This tunable is here for compatibility. It will allow the user 116 * to switch between the new mode (first rule matches) and the old 117 * functionality (all rules match). 118 */ 119 static int 120 mac_bsdextended_firstmatch_enabled; 121 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, firstmatch_enabled, 122 CTLFLAG_RW, &mac_bsdextended_firstmatch_enabled, 1, 123 "Disable/enable match first rule functionality"); 124 125 static int 126 mac_bsdextended_rule_valid(struct mac_bsdextended_rule *rule) 127 { 128 129 if ((rule->mbr_subject.mbs_flags | MBS_ALL_FLAGS) != MBS_ALL_FLAGS) 130 return (EINVAL); 131 132 if ((rule->mbr_subject.mbs_neg | MBS_ALL_FLAGS) != MBS_ALL_FLAGS) 133 return (EINVAL); 134 135 if ((rule->mbr_object.mbo_flags | MBO_ALL_FLAGS) != MBO_ALL_FLAGS) 136 return (EINVAL); 137 138 if ((rule->mbr_object.mbo_neg | MBO_ALL_FLAGS) != MBO_ALL_FLAGS) 139 return (EINVAL); 140 141 if ((rule->mbr_object.mbo_neg | MBO_TYPE_DEFINED) && 142 (rule->mbr_object.mbo_type | MBO_ALL_TYPE) != MBO_ALL_TYPE) 143 return (EINVAL); 144 145 if ((rule->mbr_mode | MBI_ALLPERM) != MBI_ALLPERM) 146 return (EINVAL); 147 148 return (0); 149 } 150 151 static int 152 sysctl_rule(SYSCTL_HANDLER_ARGS) 153 { 154 struct mac_bsdextended_rule temprule, *ruleptr; 155 u_int namelen; 156 int error, index, *name; 157 158 error = 0; 159 name = (int *)arg1; 160 namelen = arg2; 161 162 /* printf("bsdextended sysctl handler (namelen %d)\n", namelen); */ 163 164 if (namelen != 1) 165 return (EINVAL); 166 167 index = name[0]; 168 if (index >= MAC_BSDEXTENDED_MAXRULES) 169 return (ENOENT); 170 171 ruleptr = NULL; 172 if (req->newptr && req->newlen != 0) { 173 error = SYSCTL_IN(req, &temprule, sizeof(temprule)); 174 if (error) 175 return (error); 176 MALLOC(ruleptr, struct mac_bsdextended_rule *, 177 sizeof(*ruleptr), M_MACBSDEXTENDED, M_WAITOK | M_ZERO); 178 } 179 180 mtx_lock(&mac_bsdextended_mtx); 181 182 if (req->oldptr) { 183 if (index < 0 || index > rule_slots + 1) { 184 error = ENOENT; 185 goto out; 186 } 187 if (rules[index] == NULL) { 188 error = ENOENT; 189 goto out; 190 } 191 temprule = *rules[index]; 192 } 193 194 if (req->newptr && req->newlen == 0) { 195 /* printf("deletion\n"); */ 196 KASSERT(ruleptr == NULL, ("sysctl_rule: ruleptr != NULL")); 197 ruleptr = rules[index]; 198 if (ruleptr == NULL) { 199 error = ENOENT; 200 goto out; 201 } 202 rule_count--; 203 rules[index] = NULL; 204 } else if (req->newptr) { 205 error = mac_bsdextended_rule_valid(&temprule); 206 if (error) 207 goto out; 208 209 if (rules[index] == NULL) { 210 /* printf("addition\n"); */ 211 *ruleptr = temprule; 212 rules[index] = ruleptr; 213 ruleptr = NULL; 214 if (index + 1 > rule_slots) 215 rule_slots = index + 1; 216 rule_count++; 217 } else { 218 /* printf("replacement\n"); */ 219 *rules[index] = temprule; 220 } 221 } 222 223 out: 224 mtx_unlock(&mac_bsdextended_mtx); 225 if (ruleptr != NULL) 226 FREE(ruleptr, M_MACBSDEXTENDED); 227 if (req->oldptr && error == 0) 228 error = SYSCTL_OUT(req, &temprule, sizeof(temprule)); 229 230 return (error); 231 } 232 233 SYSCTL_NODE(_security_mac_bsdextended, OID_AUTO, rules, 234 CTLFLAG_RW, sysctl_rule, "BSD extended MAC rules"); 235 236 static void 237 mac_bsdextended_init(struct mac_policy_conf *mpc) 238 { 239 240 /* Initialize ruleset lock. */ 241 mtx_init(&mac_bsdextended_mtx, "mac_bsdextended lock", NULL, MTX_DEF); 242 243 /* Register dynamic sysctl's for rules. */ 244 } 245 246 static void 247 mac_bsdextended_destroy(struct mac_policy_conf *mpc) 248 { 249 250 /* Destroy ruleset lock. */ 251 mtx_destroy(&mac_bsdextended_mtx); 252 253 /* Tear down sysctls. */ 254 } 255 256 static int 257 mac_bsdextended_rulecheck(struct mac_bsdextended_rule *rule, 258 struct ucred *cred, struct vnode *vp, struct vattr *vap, int acc_mode) 259 { 260 int match; 261 int i; 262 263 /* 264 * Is there a subject match? 265 */ 266 mtx_assert(&mac_bsdextended_mtx, MA_OWNED); 267 if (rule->mbr_subject.mbs_flags & MBS_UID_DEFINED) { 268 match = ((cred->cr_uid <= rule->mbr_subject.mbs_uid_max && 269 cred->cr_uid >= rule->mbr_subject.mbs_uid_min) || 270 (cred->cr_ruid <= rule->mbr_subject.mbs_uid_max && 271 cred->cr_ruid >= rule->mbr_subject.mbs_uid_min) || 272 (cred->cr_svuid <= rule->mbr_subject.mbs_uid_max && 273 cred->cr_svuid >= rule->mbr_subject.mbs_uid_min)); 274 275 if (rule->mbr_subject.mbs_neg & MBS_UID_DEFINED) 276 match = !match; 277 278 if (!match) 279 return (0); 280 } 281 282 if (rule->mbr_subject.mbs_flags & MBS_GID_DEFINED) { 283 match = ((cred->cr_rgid <= rule->mbr_subject.mbs_gid_max && 284 cred->cr_rgid >= rule->mbr_subject.mbs_gid_min) || 285 (cred->cr_svgid <= rule->mbr_subject.mbs_gid_max && 286 cred->cr_svgid >= rule->mbr_subject.mbs_gid_min)); 287 288 if (!match) { 289 for (i = 0; i < cred->cr_ngroups; i++) 290 if (cred->cr_groups[i] 291 <= rule->mbr_subject.mbs_gid_max && 292 cred->cr_groups[i] 293 >= rule->mbr_subject.mbs_gid_min) { 294 match = 1; 295 break; 296 } 297 } 298 299 if (rule->mbr_subject.mbs_neg & MBS_GID_DEFINED) 300 match = !match; 301 302 if (!match) 303 return (0); 304 } 305 306 if (rule->mbr_subject.mbs_flags & MBS_PRISON_DEFINED) { 307 match = (cred->cr_prison != NULL && 308 cred->cr_prison->pr_id == rule->mbr_subject.mbs_prison); 309 310 if (rule->mbr_subject.mbs_neg & MBS_PRISON_DEFINED) 311 match = !match; 312 313 if (!match) 314 return (0); 315 } 316 317 /* 318 * Is there an object match? 319 */ 320 if (rule->mbr_object.mbo_flags & MBO_UID_DEFINED) { 321 match = (vap->va_uid <= rule->mbr_object.mbo_uid_max && 322 vap->va_uid >= rule->mbr_object.mbo_uid_min); 323 324 if (rule->mbr_object.mbo_neg & MBO_UID_DEFINED) 325 match = !match; 326 327 if (!match) 328 return (0); 329 } 330 331 if (rule->mbr_object.mbo_flags & MBO_GID_DEFINED) { 332 match = (vap->va_gid <= rule->mbr_object.mbo_gid_max && 333 vap->va_gid >= rule->mbr_object.mbo_gid_min); 334 335 if (rule->mbr_object.mbo_neg & MBO_GID_DEFINED) 336 match = !match; 337 338 if (!match) 339 return (0); 340 } 341 342 if (rule->mbr_object.mbo_flags & MBO_FSID_DEFINED) { 343 match = (bcmp(&(vp->v_mount->mnt_stat.f_fsid), 344 &(rule->mbr_object.mbo_fsid), 345 sizeof(rule->mbr_object.mbo_fsid)) == 0); 346 347 if (rule->mbr_object.mbo_neg & MBO_FSID_DEFINED) 348 match = !match; 349 350 if (!match) 351 return 0; 352 } 353 354 if (rule->mbr_object.mbo_flags & MBO_SUID) { 355 match = (vap->va_mode & VSUID); 356 357 if (rule->mbr_object.mbo_neg & MBO_SUID) 358 match = !match; 359 360 if (!match) 361 return 0; 362 } 363 364 if (rule->mbr_object.mbo_flags & MBO_SGID) { 365 match = (vap->va_mode & VSGID); 366 367 if (rule->mbr_object.mbo_neg & MBO_SGID) 368 match = !match; 369 370 if (!match) 371 return 0; 372 } 373 374 if (rule->mbr_object.mbo_flags & MBO_UID_SUBJECT) { 375 match = (vap->va_uid == cred->cr_uid || 376 vap->va_uid == cred->cr_ruid || 377 vap->va_uid == cred->cr_svuid); 378 379 if (rule->mbr_object.mbo_neg & MBO_UID_SUBJECT) 380 match = !match; 381 382 if (!match) 383 return 0; 384 } 385 386 if (rule->mbr_object.mbo_flags & MBO_GID_SUBJECT) { 387 match = (groupmember(vap->va_gid, cred) || 388 vap->va_gid == cred->cr_rgid || 389 vap->va_gid == cred->cr_svgid); 390 391 if (rule->mbr_object.mbo_neg & MBO_GID_SUBJECT) 392 match = !match; 393 394 if (!match) 395 return 0; 396 } 397 398 if (rule->mbr_object.mbo_flags & MBO_TYPE_DEFINED) { 399 switch (vap->va_type) { 400 case VREG: 401 match = (rule->mbr_object.mbo_type & MBO_TYPE_REG); 402 break; 403 case VDIR: 404 match = (rule->mbr_object.mbo_type & MBO_TYPE_DIR); 405 break; 406 case VBLK: 407 match = (rule->mbr_object.mbo_type & MBO_TYPE_BLK); 408 break; 409 case VCHR: 410 match = (rule->mbr_object.mbo_type & MBO_TYPE_CHR); 411 break; 412 case VLNK: 413 match = (rule->mbr_object.mbo_type & MBO_TYPE_LNK); 414 break; 415 case VSOCK: 416 match = (rule->mbr_object.mbo_type & MBO_TYPE_SOCK); 417 break; 418 case VFIFO: 419 match = (rule->mbr_object.mbo_type & MBO_TYPE_FIFO); 420 break; 421 default: 422 match = 0; 423 } 424 425 if (rule->mbr_object.mbo_neg & MBO_TYPE_DEFINED) 426 match = !match; 427 428 if (!match) 429 return 0; 430 } 431 432 /* 433 * Is the access permitted? 434 */ 435 if ((rule->mbr_mode & acc_mode) != acc_mode) { 436 if (mac_bsdextended_logging) 437 log(LOG_AUTHPRIV, "mac_bsdextended: %d:%d request %d" 438 " on %d:%d failed. \n", cred->cr_ruid, 439 cred->cr_rgid, acc_mode, vap->va_uid, vap->va_gid); 440 return (EACCES); /* Matching rule denies access */ 441 } 442 443 /* 444 * If the rule matched, permits access, and first match is enabled, 445 * return success. 446 */ 447 if (mac_bsdextended_firstmatch_enabled) 448 return (EJUSTRETURN); 449 else 450 return(0); 451 } 452 453 static int 454 mac_bsdextended_check(struct ucred *cred, struct vnode *vp, struct vattr *vap, 455 int acc_mode) 456 { 457 int error, i; 458 459 if (suser_cred(cred, 0) == 0) 460 return (0); 461 462 mtx_lock(&mac_bsdextended_mtx); 463 for (i = 0; i < rule_slots; i++) { 464 if (rules[i] == NULL) 465 continue; 466 467 /* 468 * Since we do not separately handle append, map append to 469 * write. 470 */ 471 if (acc_mode & MBI_APPEND) { 472 acc_mode &= ~MBI_APPEND; 473 acc_mode |= MBI_WRITE; 474 } 475 476 error = mac_bsdextended_rulecheck(rules[i], cred, 477 vp, vap, acc_mode); 478 if (error == EJUSTRETURN) 479 break; 480 if (error) { 481 mtx_unlock(&mac_bsdextended_mtx); 482 return (error); 483 } 484 } 485 mtx_unlock(&mac_bsdextended_mtx); 486 return (0); 487 } 488 489 static int 490 mac_bsdextended_check_vp(struct ucred *cred, struct vnode *vp, int acc_mode) 491 { 492 int error; 493 struct vattr vap; 494 495 if (!mac_bsdextended_enabled) 496 return (0); 497 498 error = VOP_GETATTR(vp, &vap, cred, curthread); 499 if (error) 500 return (error); 501 502 return (mac_bsdextended_check(cred, vp, &vap, acc_mode)); 503 } 504 505 static int 506 mac_bsdextended_check_system_swapon(struct ucred *cred, struct vnode *vp, 507 struct label *label) 508 { 509 510 return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 511 } 512 513 static int 514 mac_bsdextended_check_vnode_access(struct ucred *cred, struct vnode *vp, 515 struct label *label, int acc_mode) 516 { 517 518 return (mac_bsdextended_check_vp(cred, vp, acc_mode)); 519 } 520 521 static int 522 mac_bsdextended_check_vnode_chdir(struct ucred *cred, struct vnode *dvp, 523 struct label *dlabel) 524 { 525 526 return (mac_bsdextended_check_vp(cred, dvp, MBI_EXEC)); 527 } 528 529 static int 530 mac_bsdextended_check_vnode_chroot(struct ucred *cred, struct vnode *dvp, 531 struct label *dlabel) 532 { 533 534 return (mac_bsdextended_check_vp(cred, dvp, MBI_EXEC)); 535 } 536 537 static int 538 mac_bsdextended_check_create_vnode(struct ucred *cred, struct vnode *dvp, 539 struct label *dlabel, struct componentname *cnp, struct vattr *vap) 540 { 541 542 return (mac_bsdextended_check_vp(cred, dvp, MBI_WRITE)); 543 } 544 545 static int 546 mac_bsdextended_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 547 struct label *dlabel, struct vnode *vp, struct label *label, 548 struct componentname *cnp) 549 { 550 int error; 551 552 error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 553 if (error) 554 return (error); 555 556 return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 557 } 558 559 static int 560 mac_bsdextended_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 561 struct label *label, acl_type_t type) 562 { 563 564 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 565 } 566 567 static int 568 mac_bsdextended_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp, 569 struct label *label, int attrnamespace, const char *name) 570 { 571 572 return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 573 } 574 575 static int 576 mac_bsdextended_check_vnode_exec(struct ucred *cred, struct vnode *vp, 577 struct label *label, struct image_params *imgp, 578 struct label *execlabel) 579 { 580 581 return (mac_bsdextended_check_vp(cred, vp, MBI_READ|MBI_EXEC)); 582 } 583 584 static int 585 mac_bsdextended_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 586 struct label *label, acl_type_t type) 587 { 588 589 return (mac_bsdextended_check_vp(cred, vp, MBI_STAT)); 590 } 591 592 static int 593 mac_bsdextended_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 594 struct label *label, int attrnamespace, const char *name, struct uio *uio) 595 { 596 597 return (mac_bsdextended_check_vp(cred, vp, MBI_READ)); 598 } 599 600 static int 601 mac_bsdextended_check_vnode_link(struct ucred *cred, struct vnode *dvp, 602 struct label *dlabel, struct vnode *vp, struct label *label, 603 struct componentname *cnp) 604 { 605 int error; 606 607 error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 608 if (error) 609 return (error); 610 611 error = mac_bsdextended_check_vp(cred, vp, MBI_WRITE); 612 if (error) 613 return (error); 614 return (0); 615 } 616 617 static int 618 mac_bsdextended_check_vnode_listextattr(struct ucred *cred, struct vnode *vp, 619 struct label *label, int attrnamespace) 620 { 621 622 return (mac_bsdextended_check_vp(cred, vp, MBI_READ)); 623 } 624 625 static int 626 mac_bsdextended_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 627 struct label *dlabel, struct componentname *cnp) 628 { 629 630 return (mac_bsdextended_check_vp(cred, dvp, MBI_EXEC)); 631 } 632 633 static int 634 mac_bsdextended_check_vnode_open(struct ucred *cred, struct vnode *vp, 635 struct label *filelabel, int acc_mode) 636 { 637 638 return (mac_bsdextended_check_vp(cred, vp, acc_mode)); 639 } 640 641 static int 642 mac_bsdextended_check_vnode_readdir(struct ucred *cred, struct vnode *dvp, 643 struct label *dlabel) 644 { 645 646 return (mac_bsdextended_check_vp(cred, dvp, MBI_READ)); 647 } 648 649 static int 650 mac_bsdextended_check_vnode_readdlink(struct ucred *cred, struct vnode *vp, 651 struct label *label) 652 { 653 654 return (mac_bsdextended_check_vp(cred, vp, MBI_READ)); 655 } 656 657 static int 658 mac_bsdextended_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 659 struct label *dlabel, struct vnode *vp, struct label *label, 660 struct componentname *cnp) 661 { 662 int error; 663 664 error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 665 if (error) 666 return (error); 667 error = mac_bsdextended_check_vp(cred, vp, MBI_WRITE); 668 669 return (error); 670 } 671 672 static int 673 mac_bsdextended_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 674 struct label *dlabel, struct vnode *vp, struct label *label, int samedir, 675 struct componentname *cnp) 676 { 677 int error; 678 679 error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 680 if (error) 681 return (error); 682 683 if (vp != NULL) 684 error = mac_bsdextended_check_vp(cred, vp, MBI_WRITE); 685 686 return (error); 687 } 688 689 static int 690 mac_bsdextended_check_vnode_revoke(struct ucred *cred, struct vnode *vp, 691 struct label *label) 692 { 693 694 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 695 } 696 697 static int 698 mac_bsdextended_check_setacl_vnode(struct ucred *cred, struct vnode *vp, 699 struct label *label, acl_type_t type, struct acl *acl) 700 { 701 702 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 703 } 704 705 static int 706 mac_bsdextended_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 707 struct label *label, int attrnamespace, const char *name, struct uio *uio) 708 { 709 710 return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 711 } 712 713 static int 714 mac_bsdextended_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 715 struct label *label, u_long flags) 716 { 717 718 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 719 } 720 721 static int 722 mac_bsdextended_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 723 struct label *label, mode_t mode) 724 { 725 726 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 727 } 728 729 static int 730 mac_bsdextended_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 731 struct label *label, uid_t uid, gid_t gid) 732 { 733 734 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 735 } 736 737 static int 738 mac_bsdextended_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 739 struct label *label, struct timespec atime, struct timespec utime) 740 { 741 742 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 743 } 744 745 static int 746 mac_bsdextended_check_vnode_stat(struct ucred *active_cred, 747 struct ucred *file_cred, struct vnode *vp, struct label *label) 748 { 749 750 return (mac_bsdextended_check_vp(active_cred, vp, MBI_STAT)); 751 } 752 753 static struct mac_policy_ops mac_bsdextended_ops = 754 { 755 .mpo_destroy = mac_bsdextended_destroy, 756 .mpo_init = mac_bsdextended_init, 757 .mpo_check_system_swapon = mac_bsdextended_check_system_swapon, 758 .mpo_check_vnode_access = mac_bsdextended_check_vnode_access, 759 .mpo_check_vnode_chdir = mac_bsdextended_check_vnode_chdir, 760 .mpo_check_vnode_chroot = mac_bsdextended_check_vnode_chroot, 761 .mpo_check_vnode_create = mac_bsdextended_check_create_vnode, 762 .mpo_check_vnode_delete = mac_bsdextended_check_vnode_delete, 763 .mpo_check_vnode_deleteacl = mac_bsdextended_check_vnode_deleteacl, 764 .mpo_check_vnode_deleteextattr = mac_bsdextended_check_vnode_deleteextattr, 765 .mpo_check_vnode_exec = mac_bsdextended_check_vnode_exec, 766 .mpo_check_vnode_getacl = mac_bsdextended_check_vnode_getacl, 767 .mpo_check_vnode_getextattr = mac_bsdextended_check_vnode_getextattr, 768 .mpo_check_vnode_link = mac_bsdextended_check_vnode_link, 769 .mpo_check_vnode_listextattr = mac_bsdextended_check_vnode_listextattr, 770 .mpo_check_vnode_lookup = mac_bsdextended_check_vnode_lookup, 771 .mpo_check_vnode_open = mac_bsdextended_check_vnode_open, 772 .mpo_check_vnode_readdir = mac_bsdextended_check_vnode_readdir, 773 .mpo_check_vnode_readlink = mac_bsdextended_check_vnode_readdlink, 774 .mpo_check_vnode_rename_from = mac_bsdextended_check_vnode_rename_from, 775 .mpo_check_vnode_rename_to = mac_bsdextended_check_vnode_rename_to, 776 .mpo_check_vnode_revoke = mac_bsdextended_check_vnode_revoke, 777 .mpo_check_vnode_setacl = mac_bsdextended_check_setacl_vnode, 778 .mpo_check_vnode_setextattr = mac_bsdextended_check_vnode_setextattr, 779 .mpo_check_vnode_setflags = mac_bsdextended_check_vnode_setflags, 780 .mpo_check_vnode_setmode = mac_bsdextended_check_vnode_setmode, 781 .mpo_check_vnode_setowner = mac_bsdextended_check_vnode_setowner, 782 .mpo_check_vnode_setutimes = mac_bsdextended_check_vnode_setutimes, 783 .mpo_check_vnode_stat = mac_bsdextended_check_vnode_stat, 784 }; 785 786 MAC_POLICY_SET(&mac_bsdextended_ops, mac_bsdextended, 787 "TrustedBSD MAC/BSD Extended", MPC_LOADTIME_FLAG_UNLOADOK, NULL); 788