1 /*- 2 * Copyright (c) 2005 Tom Rhodes 3 * Copyright (c) 1999-2002, 2007 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/param.h> 46 #include <sys/acl.h> 47 #include <sys/kernel.h> 48 #include <sys/jail.h> 49 #include <sys/lock.h> 50 #include <sys/malloc.h> 51 #include <sys/module.h> 52 #include <sys/mount.h> 53 #include <sys/mutex.h> 54 #include <sys/systm.h> 55 #include <sys/vnode.h> 56 #include <sys/sysctl.h> 57 #include <sys/syslog.h> 58 59 #include <security/mac/mac_policy.h> 60 #include <security/mac_bsdextended/mac_bsdextended.h> 61 62 static struct mtx mac_bsdextended_mtx; 63 64 SYSCTL_DECL(_security_mac); 65 66 SYSCTL_NODE(_security_mac, OID_AUTO, bsdextended, CTLFLAG_RW, 0, 67 "TrustedBSD extended BSD MAC policy controls"); 68 69 static int mac_bsdextended_enabled = 1; 70 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, enabled, CTLFLAG_RW, 71 &mac_bsdextended_enabled, 0, "Enforce extended BSD policy"); 72 TUNABLE_INT("security.mac.bsdextended.enabled", &mac_bsdextended_enabled); 73 74 MALLOC_DEFINE(M_MACBSDEXTENDED, "mac_bsdextended", "BSD Extended MAC rule"); 75 76 #define MAC_BSDEXTENDED_MAXRULES 250 77 static struct mac_bsdextended_rule *rules[MAC_BSDEXTENDED_MAXRULES]; 78 static int rule_count = 0; 79 static int rule_slots = 0; 80 static int rule_version = MB_VERSION; 81 82 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_count, CTLFLAG_RD, 83 &rule_count, 0, "Number of defined rules\n"); 84 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_slots, CTLFLAG_RD, 85 &rule_slots, 0, "Number of used rule slots\n"); 86 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_version, CTLFLAG_RD, 87 &rule_version, 0, "Version number for API\n"); 88 89 /* 90 * This is just used for logging purposes, eventually we would like 91 * to log much more then failed requests. 92 */ 93 static int mac_bsdextended_logging; 94 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, logging, CTLFLAG_RW, 95 &mac_bsdextended_logging, 0, "Log failed authorization requests"); 96 97 /* 98 * This tunable is here for compatibility. It will allow the user 99 * to switch between the new mode (first rule matches) and the old 100 * functionality (all rules match). 101 */ 102 static int 103 mac_bsdextended_firstmatch_enabled; 104 SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, firstmatch_enabled, 105 CTLFLAG_RW, &mac_bsdextended_firstmatch_enabled, 1, 106 "Disable/enable match first rule functionality"); 107 108 static int 109 mac_bsdextended_rule_valid(struct mac_bsdextended_rule *rule) 110 { 111 112 if ((rule->mbr_subject.mbs_flags | MBS_ALL_FLAGS) != MBS_ALL_FLAGS) 113 return (EINVAL); 114 115 if ((rule->mbr_subject.mbs_neg | MBS_ALL_FLAGS) != MBS_ALL_FLAGS) 116 return (EINVAL); 117 118 if ((rule->mbr_object.mbo_flags | MBO_ALL_FLAGS) != MBO_ALL_FLAGS) 119 return (EINVAL); 120 121 if ((rule->mbr_object.mbo_neg | MBO_ALL_FLAGS) != MBO_ALL_FLAGS) 122 return (EINVAL); 123 124 if ((rule->mbr_object.mbo_neg | MBO_TYPE_DEFINED) && 125 (rule->mbr_object.mbo_type | MBO_ALL_TYPE) != MBO_ALL_TYPE) 126 return (EINVAL); 127 128 if ((rule->mbr_mode | MBI_ALLPERM) != MBI_ALLPERM) 129 return (EINVAL); 130 131 return (0); 132 } 133 134 static int 135 sysctl_rule(SYSCTL_HANDLER_ARGS) 136 { 137 struct mac_bsdextended_rule temprule, *ruleptr; 138 u_int namelen; 139 int error, index, *name; 140 141 error = 0; 142 name = (int *)arg1; 143 namelen = arg2; 144 145 /* printf("bsdextended sysctl handler (namelen %d)\n", namelen); */ 146 147 if (namelen != 1) 148 return (EINVAL); 149 150 index = name[0]; 151 if (index >= MAC_BSDEXTENDED_MAXRULES) 152 return (ENOENT); 153 154 ruleptr = NULL; 155 if (req->newptr && req->newlen != 0) { 156 error = SYSCTL_IN(req, &temprule, sizeof(temprule)); 157 if (error) 158 return (error); 159 MALLOC(ruleptr, struct mac_bsdextended_rule *, 160 sizeof(*ruleptr), M_MACBSDEXTENDED, M_WAITOK | M_ZERO); 161 } 162 163 mtx_lock(&mac_bsdextended_mtx); 164 165 if (req->oldptr) { 166 if (index < 0 || index > rule_slots + 1) { 167 error = ENOENT; 168 goto out; 169 } 170 if (rules[index] == NULL) { 171 error = ENOENT; 172 goto out; 173 } 174 temprule = *rules[index]; 175 } 176 177 if (req->newptr && req->newlen == 0) { 178 /* printf("deletion\n"); */ 179 KASSERT(ruleptr == NULL, ("sysctl_rule: ruleptr != NULL")); 180 ruleptr = rules[index]; 181 if (ruleptr == NULL) { 182 error = ENOENT; 183 goto out; 184 } 185 rule_count--; 186 rules[index] = NULL; 187 } else if (req->newptr) { 188 error = mac_bsdextended_rule_valid(&temprule); 189 if (error) 190 goto out; 191 192 if (rules[index] == NULL) { 193 /* printf("addition\n"); */ 194 *ruleptr = temprule; 195 rules[index] = ruleptr; 196 ruleptr = NULL; 197 if (index + 1 > rule_slots) 198 rule_slots = index + 1; 199 rule_count++; 200 } else { 201 /* printf("replacement\n"); */ 202 *rules[index] = temprule; 203 } 204 } 205 206 out: 207 mtx_unlock(&mac_bsdextended_mtx); 208 if (ruleptr != NULL) 209 FREE(ruleptr, M_MACBSDEXTENDED); 210 if (req->oldptr && error == 0) 211 error = SYSCTL_OUT(req, &temprule, sizeof(temprule)); 212 213 return (error); 214 } 215 216 SYSCTL_NODE(_security_mac_bsdextended, OID_AUTO, rules, 217 CTLFLAG_RW, sysctl_rule, "BSD extended MAC rules"); 218 219 static void 220 mac_bsdextended_init(struct mac_policy_conf *mpc) 221 { 222 223 /* Initialize ruleset lock. */ 224 mtx_init(&mac_bsdextended_mtx, "mac_bsdextended lock", NULL, MTX_DEF); 225 226 /* Register dynamic sysctl's for rules. */ 227 } 228 229 static void 230 mac_bsdextended_destroy(struct mac_policy_conf *mpc) 231 { 232 233 /* Destroy ruleset lock. */ 234 mtx_destroy(&mac_bsdextended_mtx); 235 236 /* Tear down sysctls. */ 237 } 238 239 static int 240 mac_bsdextended_rulecheck(struct mac_bsdextended_rule *rule, 241 struct ucred *cred, struct vnode *vp, struct vattr *vap, int acc_mode) 242 { 243 int match; 244 int i; 245 246 /* 247 * Is there a subject match? 248 */ 249 mtx_assert(&mac_bsdextended_mtx, MA_OWNED); 250 if (rule->mbr_subject.mbs_flags & MBS_UID_DEFINED) { 251 match = ((cred->cr_uid <= rule->mbr_subject.mbs_uid_max && 252 cred->cr_uid >= rule->mbr_subject.mbs_uid_min) || 253 (cred->cr_ruid <= rule->mbr_subject.mbs_uid_max && 254 cred->cr_ruid >= rule->mbr_subject.mbs_uid_min) || 255 (cred->cr_svuid <= rule->mbr_subject.mbs_uid_max && 256 cred->cr_svuid >= rule->mbr_subject.mbs_uid_min)); 257 258 if (rule->mbr_subject.mbs_neg & MBS_UID_DEFINED) 259 match = !match; 260 261 if (!match) 262 return (0); 263 } 264 265 if (rule->mbr_subject.mbs_flags & MBS_GID_DEFINED) { 266 match = ((cred->cr_rgid <= rule->mbr_subject.mbs_gid_max && 267 cred->cr_rgid >= rule->mbr_subject.mbs_gid_min) || 268 (cred->cr_svgid <= rule->mbr_subject.mbs_gid_max && 269 cred->cr_svgid >= rule->mbr_subject.mbs_gid_min)); 270 271 if (!match) { 272 for (i = 0; i < cred->cr_ngroups; i++) 273 if (cred->cr_groups[i] 274 <= rule->mbr_subject.mbs_gid_max && 275 cred->cr_groups[i] 276 >= rule->mbr_subject.mbs_gid_min) { 277 match = 1; 278 break; 279 } 280 } 281 282 if (rule->mbr_subject.mbs_neg & MBS_GID_DEFINED) 283 match = !match; 284 285 if (!match) 286 return (0); 287 } 288 289 if (rule->mbr_subject.mbs_flags & MBS_PRISON_DEFINED) { 290 match = (cred->cr_prison != NULL && 291 cred->cr_prison->pr_id == rule->mbr_subject.mbs_prison); 292 293 if (rule->mbr_subject.mbs_neg & MBS_PRISON_DEFINED) 294 match = !match; 295 296 if (!match) 297 return (0); 298 } 299 300 /* 301 * Is there an object match? 302 */ 303 if (rule->mbr_object.mbo_flags & MBO_UID_DEFINED) { 304 match = (vap->va_uid <= rule->mbr_object.mbo_uid_max && 305 vap->va_uid >= rule->mbr_object.mbo_uid_min); 306 307 if (rule->mbr_object.mbo_neg & MBO_UID_DEFINED) 308 match = !match; 309 310 if (!match) 311 return (0); 312 } 313 314 if (rule->mbr_object.mbo_flags & MBO_GID_DEFINED) { 315 match = (vap->va_gid <= rule->mbr_object.mbo_gid_max && 316 vap->va_gid >= rule->mbr_object.mbo_gid_min); 317 318 if (rule->mbr_object.mbo_neg & MBO_GID_DEFINED) 319 match = !match; 320 321 if (!match) 322 return (0); 323 } 324 325 if (rule->mbr_object.mbo_flags & MBO_FSID_DEFINED) { 326 match = (bcmp(&(vp->v_mount->mnt_stat.f_fsid), 327 &(rule->mbr_object.mbo_fsid), 328 sizeof(rule->mbr_object.mbo_fsid)) == 0); 329 330 if (rule->mbr_object.mbo_neg & MBO_FSID_DEFINED) 331 match = !match; 332 333 if (!match) 334 return 0; 335 } 336 337 if (rule->mbr_object.mbo_flags & MBO_SUID) { 338 match = (vap->va_mode & VSUID); 339 340 if (rule->mbr_object.mbo_neg & MBO_SUID) 341 match = !match; 342 343 if (!match) 344 return 0; 345 } 346 347 if (rule->mbr_object.mbo_flags & MBO_SGID) { 348 match = (vap->va_mode & VSGID); 349 350 if (rule->mbr_object.mbo_neg & MBO_SGID) 351 match = !match; 352 353 if (!match) 354 return 0; 355 } 356 357 if (rule->mbr_object.mbo_flags & MBO_UID_SUBJECT) { 358 match = (vap->va_uid == cred->cr_uid || 359 vap->va_uid == cred->cr_ruid || 360 vap->va_uid == cred->cr_svuid); 361 362 if (rule->mbr_object.mbo_neg & MBO_UID_SUBJECT) 363 match = !match; 364 365 if (!match) 366 return 0; 367 } 368 369 if (rule->mbr_object.mbo_flags & MBO_GID_SUBJECT) { 370 match = (groupmember(vap->va_gid, cred) || 371 vap->va_gid == cred->cr_rgid || 372 vap->va_gid == cred->cr_svgid); 373 374 if (rule->mbr_object.mbo_neg & MBO_GID_SUBJECT) 375 match = !match; 376 377 if (!match) 378 return 0; 379 } 380 381 if (rule->mbr_object.mbo_flags & MBO_TYPE_DEFINED) { 382 switch (vap->va_type) { 383 case VREG: 384 match = (rule->mbr_object.mbo_type & MBO_TYPE_REG); 385 break; 386 case VDIR: 387 match = (rule->mbr_object.mbo_type & MBO_TYPE_DIR); 388 break; 389 case VBLK: 390 match = (rule->mbr_object.mbo_type & MBO_TYPE_BLK); 391 break; 392 case VCHR: 393 match = (rule->mbr_object.mbo_type & MBO_TYPE_CHR); 394 break; 395 case VLNK: 396 match = (rule->mbr_object.mbo_type & MBO_TYPE_LNK); 397 break; 398 case VSOCK: 399 match = (rule->mbr_object.mbo_type & MBO_TYPE_SOCK); 400 break; 401 case VFIFO: 402 match = (rule->mbr_object.mbo_type & MBO_TYPE_FIFO); 403 break; 404 default: 405 match = 0; 406 } 407 408 if (rule->mbr_object.mbo_neg & MBO_TYPE_DEFINED) 409 match = !match; 410 411 if (!match) 412 return 0; 413 } 414 415 /* 416 * Is the access permitted? 417 */ 418 if ((rule->mbr_mode & acc_mode) != acc_mode) { 419 if (mac_bsdextended_logging) 420 log(LOG_AUTHPRIV, "mac_bsdextended: %d:%d request %d" 421 " on %d:%d failed. \n", cred->cr_ruid, 422 cred->cr_rgid, acc_mode, vap->va_uid, vap->va_gid); 423 return (EACCES); /* Matching rule denies access */ 424 } 425 426 /* 427 * If the rule matched, permits access, and first match is enabled, 428 * return success. 429 */ 430 if (mac_bsdextended_firstmatch_enabled) 431 return (EJUSTRETURN); 432 else 433 return(0); 434 } 435 436 static int 437 mac_bsdextended_check(struct ucred *cred, struct vnode *vp, struct vattr *vap, 438 int acc_mode) 439 { 440 int error, i; 441 442 /* 443 * XXXRW: More specific privilege selection needed? 444 */ 445 if (suser_cred(cred, 0) == 0) 446 return (0); 447 448 /* 449 * Since we do not separately handle append, map append to write. 450 */ 451 if (acc_mode & MBI_APPEND) { 452 acc_mode &= ~MBI_APPEND; 453 acc_mode |= MBI_WRITE; 454 } 455 456 mtx_lock(&mac_bsdextended_mtx); 457 for (i = 0; i < rule_slots; i++) { 458 if (rules[i] == NULL) 459 continue; 460 461 error = mac_bsdextended_rulecheck(rules[i], cred, 462 vp, vap, acc_mode); 463 if (error == EJUSTRETURN) 464 break; 465 if (error) { 466 mtx_unlock(&mac_bsdextended_mtx); 467 return (error); 468 } 469 } 470 mtx_unlock(&mac_bsdextended_mtx); 471 return (0); 472 } 473 474 static int 475 mac_bsdextended_check_vp(struct ucred *cred, struct vnode *vp, int acc_mode) 476 { 477 int error; 478 struct vattr vap; 479 480 if (!mac_bsdextended_enabled) 481 return (0); 482 483 error = VOP_GETATTR(vp, &vap, cred, curthread); 484 if (error) 485 return (error); 486 487 return (mac_bsdextended_check(cred, vp, &vap, acc_mode)); 488 } 489 490 static int 491 mac_bsdextended_check_system_swapon(struct ucred *cred, struct vnode *vp, 492 struct label *label) 493 { 494 495 return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 496 } 497 498 static int 499 mac_bsdextended_check_vnode_access(struct ucred *cred, struct vnode *vp, 500 struct label *label, int acc_mode) 501 { 502 503 return (mac_bsdextended_check_vp(cred, vp, acc_mode)); 504 } 505 506 static int 507 mac_bsdextended_check_vnode_chdir(struct ucred *cred, struct vnode *dvp, 508 struct label *dlabel) 509 { 510 511 return (mac_bsdextended_check_vp(cred, dvp, MBI_EXEC)); 512 } 513 514 static int 515 mac_bsdextended_check_vnode_chroot(struct ucred *cred, struct vnode *dvp, 516 struct label *dlabel) 517 { 518 519 return (mac_bsdextended_check_vp(cred, dvp, MBI_EXEC)); 520 } 521 522 static int 523 mac_bsdextended_check_create_vnode(struct ucred *cred, struct vnode *dvp, 524 struct label *dlabel, struct componentname *cnp, struct vattr *vap) 525 { 526 527 return (mac_bsdextended_check_vp(cred, dvp, MBI_WRITE)); 528 } 529 530 static int 531 mac_bsdextended_check_vnode_delete(struct ucred *cred, struct vnode *dvp, 532 struct label *dlabel, struct vnode *vp, struct label *label, 533 struct componentname *cnp) 534 { 535 int error; 536 537 error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 538 if (error) 539 return (error); 540 541 return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 542 } 543 544 static int 545 mac_bsdextended_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp, 546 struct label *label, acl_type_t type) 547 { 548 549 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 550 } 551 552 static int 553 mac_bsdextended_check_vnode_deleteextattr(struct ucred *cred, struct vnode *vp, 554 struct label *label, int attrnamespace, const char *name) 555 { 556 557 return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 558 } 559 560 static int 561 mac_bsdextended_check_vnode_exec(struct ucred *cred, struct vnode *vp, 562 struct label *label, struct image_params *imgp, 563 struct label *execlabel) 564 { 565 566 return (mac_bsdextended_check_vp(cred, vp, MBI_READ|MBI_EXEC)); 567 } 568 569 static int 570 mac_bsdextended_check_vnode_getacl(struct ucred *cred, struct vnode *vp, 571 struct label *label, acl_type_t type) 572 { 573 574 return (mac_bsdextended_check_vp(cred, vp, MBI_STAT)); 575 } 576 577 static int 578 mac_bsdextended_check_vnode_getextattr(struct ucred *cred, struct vnode *vp, 579 struct label *label, int attrnamespace, const char *name, struct uio *uio) 580 { 581 582 return (mac_bsdextended_check_vp(cred, vp, MBI_READ)); 583 } 584 585 static int 586 mac_bsdextended_check_vnode_link(struct ucred *cred, struct vnode *dvp, 587 struct label *dlabel, struct vnode *vp, struct label *label, 588 struct componentname *cnp) 589 { 590 int error; 591 592 error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 593 if (error) 594 return (error); 595 596 error = mac_bsdextended_check_vp(cred, vp, MBI_WRITE); 597 if (error) 598 return (error); 599 return (0); 600 } 601 602 static int 603 mac_bsdextended_check_vnode_listextattr(struct ucred *cred, struct vnode *vp, 604 struct label *label, int attrnamespace) 605 { 606 607 return (mac_bsdextended_check_vp(cred, vp, MBI_READ)); 608 } 609 610 static int 611 mac_bsdextended_check_vnode_lookup(struct ucred *cred, struct vnode *dvp, 612 struct label *dlabel, struct componentname *cnp) 613 { 614 615 return (mac_bsdextended_check_vp(cred, dvp, MBI_EXEC)); 616 } 617 618 static int 619 mac_bsdextended_check_vnode_open(struct ucred *cred, struct vnode *vp, 620 struct label *filelabel, int acc_mode) 621 { 622 623 return (mac_bsdextended_check_vp(cred, vp, acc_mode)); 624 } 625 626 static int 627 mac_bsdextended_check_vnode_readdir(struct ucred *cred, struct vnode *dvp, 628 struct label *dlabel) 629 { 630 631 return (mac_bsdextended_check_vp(cred, dvp, MBI_READ)); 632 } 633 634 static int 635 mac_bsdextended_check_vnode_readdlink(struct ucred *cred, struct vnode *vp, 636 struct label *label) 637 { 638 639 return (mac_bsdextended_check_vp(cred, vp, MBI_READ)); 640 } 641 642 static int 643 mac_bsdextended_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp, 644 struct label *dlabel, struct vnode *vp, struct label *label, 645 struct componentname *cnp) 646 { 647 int error; 648 649 error = mac_bsdextended_check_vp(cred, dvp, MBI_WRITE); 650 if (error) 651 return (error); 652 error = mac_bsdextended_check_vp(cred, vp, MBI_WRITE); 653 654 return (error); 655 } 656 657 static int 658 mac_bsdextended_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp, 659 struct label *dlabel, struct vnode *vp, struct label *label, int samedir, 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); 667 668 if (vp != NULL) 669 error = mac_bsdextended_check_vp(cred, vp, MBI_WRITE); 670 671 return (error); 672 } 673 674 static int 675 mac_bsdextended_check_vnode_revoke(struct ucred *cred, struct vnode *vp, 676 struct label *label) 677 { 678 679 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 680 } 681 682 static int 683 mac_bsdextended_check_setacl_vnode(struct ucred *cred, struct vnode *vp, 684 struct label *label, acl_type_t type, struct acl *acl) 685 { 686 687 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 688 } 689 690 static int 691 mac_bsdextended_check_vnode_setextattr(struct ucred *cred, struct vnode *vp, 692 struct label *label, int attrnamespace, const char *name, struct uio *uio) 693 { 694 695 return (mac_bsdextended_check_vp(cred, vp, MBI_WRITE)); 696 } 697 698 static int 699 mac_bsdextended_check_vnode_setflags(struct ucred *cred, struct vnode *vp, 700 struct label *label, u_long flags) 701 { 702 703 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 704 } 705 706 static int 707 mac_bsdextended_check_vnode_setmode(struct ucred *cred, struct vnode *vp, 708 struct label *label, mode_t mode) 709 { 710 711 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 712 } 713 714 static int 715 mac_bsdextended_check_vnode_setowner(struct ucred *cred, struct vnode *vp, 716 struct label *label, uid_t uid, gid_t gid) 717 { 718 719 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 720 } 721 722 static int 723 mac_bsdextended_check_vnode_setutimes(struct ucred *cred, struct vnode *vp, 724 struct label *label, struct timespec atime, struct timespec utime) 725 { 726 727 return (mac_bsdextended_check_vp(cred, vp, MBI_ADMIN)); 728 } 729 730 static int 731 mac_bsdextended_check_vnode_stat(struct ucred *active_cred, 732 struct ucred *file_cred, struct vnode *vp, struct label *label) 733 { 734 735 return (mac_bsdextended_check_vp(active_cred, vp, MBI_STAT)); 736 } 737 738 static struct mac_policy_ops mac_bsdextended_ops = 739 { 740 .mpo_destroy = mac_bsdextended_destroy, 741 .mpo_init = mac_bsdextended_init, 742 .mpo_check_system_swapon = mac_bsdextended_check_system_swapon, 743 .mpo_check_vnode_access = mac_bsdextended_check_vnode_access, 744 .mpo_check_vnode_chdir = mac_bsdextended_check_vnode_chdir, 745 .mpo_check_vnode_chroot = mac_bsdextended_check_vnode_chroot, 746 .mpo_check_vnode_create = mac_bsdextended_check_create_vnode, 747 .mpo_check_vnode_delete = mac_bsdextended_check_vnode_delete, 748 .mpo_check_vnode_deleteacl = mac_bsdextended_check_vnode_deleteacl, 749 .mpo_check_vnode_deleteextattr = mac_bsdextended_check_vnode_deleteextattr, 750 .mpo_check_vnode_exec = mac_bsdextended_check_vnode_exec, 751 .mpo_check_vnode_getacl = mac_bsdextended_check_vnode_getacl, 752 .mpo_check_vnode_getextattr = mac_bsdextended_check_vnode_getextattr, 753 .mpo_check_vnode_link = mac_bsdextended_check_vnode_link, 754 .mpo_check_vnode_listextattr = mac_bsdextended_check_vnode_listextattr, 755 .mpo_check_vnode_lookup = mac_bsdextended_check_vnode_lookup, 756 .mpo_check_vnode_open = mac_bsdextended_check_vnode_open, 757 .mpo_check_vnode_readdir = mac_bsdextended_check_vnode_readdir, 758 .mpo_check_vnode_readlink = mac_bsdextended_check_vnode_readdlink, 759 .mpo_check_vnode_rename_from = mac_bsdextended_check_vnode_rename_from, 760 .mpo_check_vnode_rename_to = mac_bsdextended_check_vnode_rename_to, 761 .mpo_check_vnode_revoke = mac_bsdextended_check_vnode_revoke, 762 .mpo_check_vnode_setacl = mac_bsdextended_check_setacl_vnode, 763 .mpo_check_vnode_setextattr = mac_bsdextended_check_vnode_setextattr, 764 .mpo_check_vnode_setflags = mac_bsdextended_check_vnode_setflags, 765 .mpo_check_vnode_setmode = mac_bsdextended_check_vnode_setmode, 766 .mpo_check_vnode_setowner = mac_bsdextended_check_vnode_setowner, 767 .mpo_check_vnode_setutimes = mac_bsdextended_check_vnode_setutimes, 768 .mpo_check_vnode_stat = mac_bsdextended_check_vnode_stat, 769 }; 770 771 MAC_POLICY_SET(&mac_bsdextended_ops, mac_bsdextended, 772 "TrustedBSD MAC/BSD Extended", MPC_LOADTIME_FLAG_UNLOADOK, NULL); 773