1/*-
2 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
3 * Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed by Robert Watson for the TrustedBSD Project.
7 *
8 * This software was developed for the FreeBSD Project in part by NAI Labs,
9 * the Security Research Division of Network Associates, Inc. under
10 * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
11 * CHATS research program.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 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_bsdextended/mac_bsdextended.c 102129 2002-08-19 19:04:53Z rwatson $
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 * XXX: Much locking support required here.
45 */
46
47#include <sys/types.h>
48#include <sys/param.h>
49#include <sys/acl.h>
50#include <sys/conf.h>
51#include <sys/kernel.h>
52#include <sys/mac.h>
53#include <sys/malloc.h>
54#include <sys/mount.h>
55#include <sys/proc.h>
56#include <sys/systm.h>
57#include <sys/sysproto.h>
58#include <sys/sysent.h>
59#include <sys/vnode.h>
60#include <sys/file.h>
61#include <sys/socket.h>
62#include <sys/socketvar.h>
63#include <sys/sysctl.h>
64
65#include <net/bpfdesc.h>
66#include <net/if.h>
67#include <net/if_types.h>
68#include <net/if_var.h>
69
70#include <vm/vm.h>
71
72#include <sys/mac_policy.h>
73
74#include <security/mac_bsdextended/mac_bsdextended.h>
75
76SYSCTL_DECL(_security_mac);
77
78SYSCTL_NODE(_security_mac, OID_AUTO, bsdextended, CTLFLAG_RW, 0,
79 "TrustedBSD extended BSD MAC policy controls");
80
81static int mac_bsdextended_enabled = 1;
82SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, enabled, CTLFLAG_RW,
83 &mac_bsdextended_enabled, 0, "Enforce extended BSD policy");
84TUNABLE_INT("security.mac.bsdextended.enabled", &mac_bsdextended_enabled);
85
86MALLOC_DEFINE(M_MACBSDEXTENDED, "mac_bsdextended", "BSD Extended MAC rule");
87
88#define MAC_BSDEXTENDED_MAXRULES 250
89static struct mac_bsdextended_rule *rules[MAC_BSDEXTENDED_MAXRULES];
90static int rule_count = 0;
91static int rule_slots = 0;
92
93SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_count, CTLFLAG_RD,
94 &rule_count, 0, "Number of defined rules\n");
95SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_slots, CTLFLAG_RD,
96 &rule_slots, 0, "Number of used rule slots\n");
97
98static int mac_bsdextended_debugging;
99SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, debugging, CTLFLAG_RW,
100 &mac_bsdextended_debugging, 0, "Enable debugging on failure");
101
102static int
103mac_bsdextended_rule_valid(struct mac_bsdextended_rule *rule)
104{
105
106 if ((rule->mbr_subject.mbi_flags | MBI_BITS) != MBI_BITS)
107 return (EINVAL);
108
109 if ((rule->mbr_object.mbi_flags | MBI_BITS) != MBI_BITS)
110 return (EINVAL);
111
112 if ((rule->mbr_mode | VALLPERM) != VALLPERM)
113 return (EINVAL);
114
115 return (0);
116}
117
118static int
119sysctl_rule(SYSCTL_HANDLER_ARGS)
120{
121 struct mac_bsdextended_rule temprule, *ruleptr;
122 u_int namelen;
123 int error, index, *name;
124
125 name = (int *)arg1;
126 namelen = arg2;
127
128 /* printf("bsdextended sysctl handler (namelen %d)\n", namelen); */
129
130 if (namelen != 1)
131 return (EINVAL);
132
133 index = name[0];
134 if (index < 0 || index > rule_slots + 1)
135 return (ENOENT);
136 if (rule_slots >= MAC_BSDEXTENDED_MAXRULES)
137 return (ENOENT);
138
139 if (req->oldptr) {
140 if (rules[index] == NULL)
141 return (ENOENT);
142
143 error = SYSCTL_OUT(req, rules[index], sizeof(*rules[index]));
144 if (error)
145 return (error);
146 }
147
148 if (req->newptr) {
149 if (req->newlen == 0) {
150 /* printf("deletion\n"); */
151 ruleptr = rules[index];
152 if (ruleptr == NULL)
153 return (ENOENT);
154 rule_count--;
155 rules[index] = NULL;
156 FREE(ruleptr, M_MACBSDEXTENDED);
157 return(0);
158 }
159 error = SYSCTL_IN(req, &temprule, sizeof(temprule));
160 if (error)
161 return (error);
162
163 error = mac_bsdextended_rule_valid(&temprule);
164 if (error)
165 return (error);
166
167 if (rules[index] == NULL) {
168 /* printf("addition\n"); */
169 MALLOC(ruleptr, struct mac_bsdextended_rule *,
170 sizeof(*ruleptr), M_MACBSDEXTENDED, M_WAITOK |
171 M_ZERO);
172 *ruleptr = temprule;
173 rules[index] = ruleptr;
174 if (index+1 > rule_slots)
175 rule_slots = index+1;
176 rule_count++;
177 } else {
178 /* printf("replacement\n"); */
179 *rules[index] = temprule;
180 }
181 }
182
183 return (0);
184}
185
186SYSCTL_NODE(_security_mac_bsdextended, OID_AUTO, rules,
187 CTLFLAG_RW, sysctl_rule, "BSD extended MAC rules");
188
189static void
190mac_bsdextended_init(struct mac_policy_conf *mpc)
191{
192
193 /* Initialize ruleset lock. */
194 /* Register dynamic sysctl's for rules. */
195}
196
197static void
198mac_bsdextended_destroy(struct mac_policy_conf *mpc)
199{
200
201 /* Tear down sysctls. */
202 /* Destroy ruleset lock. */
203}
204
205static int
206mac_bsdextended_rulecheck(struct mac_bsdextended_rule *rule,
207 struct ucred *cred, uid_t object_uid, gid_t object_gid, mode_t acc_mode)
208{
209 int match;
210
211 /*
212 * Is there a subject match?
213 */
214 if (rule->mbr_subject.mbi_flags & MBI_UID_DEFINED) {
215 match = (rule->mbr_subject.mbi_uid == cred->cr_uid ||
216 rule->mbr_subject.mbi_uid == cred->cr_ruid ||
217 rule->mbr_subject.mbi_uid == cred->cr_svuid);
218
219 if (rule->mbr_subject.mbi_flags & MBI_NEGATED)
220 match = !match;
221
222 if (!match)
223 return (0);
224 }
225
226 if (rule->mbr_subject.mbi_flags & MBI_GID_DEFINED) {
227 match = (groupmember(rule->mbr_subject.mbi_gid, cred) ||
228 rule->mbr_subject.mbi_gid == cred->cr_rgid ||
229 rule->mbr_subject.mbi_gid == cred->cr_svgid);
230
231 if (rule->mbr_subject.mbi_flags & MBI_NEGATED)
232 match = !match;
233
234 if (!match)
235 return (0);
236 }
237
238 /*
239 * Is there an object match?
240 */
241 if (rule->mbr_object.mbi_flags & MBI_UID_DEFINED) {
242 match = (rule->mbr_object.mbi_uid == object_uid);
243
244 if (rule->mbr_object.mbi_flags & MBI_NEGATED)
245 match = !match;
246
247 if (!match)
248 return (0);
249 }
250
251 if (rule->mbr_object.mbi_flags & MBI_GID_DEFINED) {
252 match = (rule->mbr_object.mbi_gid == object_gid);
253
254 if (rule->mbr_object.mbi_flags & MBI_NEGATED)
255 match = !match;
256
257 if (!match)
258 return (0);
259 }
260
261 /*
262 * Is the access permitted?
263 */
264 if ((rule->mbr_mode & acc_mode) != acc_mode) {
265 if (mac_bsdextended_debugging)
266 printf("mac_bsdextended: %d:%d request %d on %d:%d"
267 " fails\n", cred->cr_ruid, cred->cr_rgid,
268 acc_mode, object_uid, object_gid);
269 return (EACCES);
270 }
271
272 return (0);
273}
274
275static int
276mac_bsdextended_check(struct ucred *cred, uid_t object_uid, gid_t object_gid,
277 mode_t acc_mode)
278{
279 int error, i;
280
281 for (i = 0; i < rule_slots; i++) {
282 if (rules[i] == NULL)
283 continue;
284
285 error = mac_bsdextended_rulecheck(rules[i], cred, object_uid,
286 object_gid, acc_mode);
287 if (error)
288 return (error);
289 }
290
291 return (0);
292}
293
294static int
295mac_bsdextended_check_vnode_access(struct ucred *cred, struct vnode *vp,
296 struct label *label, mode_t flags)
297{
298 struct vattr vap;
299 int error;
300
301 if (!mac_bsdextended_enabled)
302 return (0);
303
304 error = VOP_GETATTR(vp, &vap, cred, curthread);
305 if (error)
306 return (error);
307 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, flags));
308}
309
310static int
311mac_bsdextended_check_vnode_chdir(struct ucred *cred, struct vnode *dvp,
312 struct label *dlabel)
313{
314 struct vattr vap;
315 int error;
316
317 if (!mac_bsdextended_enabled)
318 return (0);
319
320 error = VOP_GETATTR(dvp, &vap, cred, curthread);
321 if (error)
322 return (error);
323 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
324}
325
326static int
327mac_bsdextended_check_vnode_chroot(struct ucred *cred, struct vnode *dvp,
328 struct label *dlabel)
329{
330 struct vattr vap;
331 int error;
332
333 if (!mac_bsdextended_enabled)
334 return (0);
335
336 error = VOP_GETATTR(dvp, &vap, cred, curthread);
337 if (error)
338 return (error);
339 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
340}
341
342static int
343mac_bsdextended_check_create_vnode(struct ucred *cred, struct vnode *dvp,
344 struct label *dlabel, struct componentname *cnp, struct vattr *vap)
345{
346 struct vattr dvap;
347 int error;
348
349 if (!mac_bsdextended_enabled)
350 return (0);
351
352 error = VOP_GETATTR(dvp, &dvap, cred, curthread);
353 if (error)
354 return (error);
355 return (mac_bsdextended_check(cred, dvap.va_uid, dvap.va_gid, VWRITE));
356}
357
358static int
359mac_bsdextended_check_vnode_delete(struct ucred *cred, struct vnode *dvp,
360 struct label *dlabel, struct vnode *vp, struct label *label,
361 struct componentname *cnp)
362{
363 struct vattr vap;
364 int error;
365
366 if (!mac_bsdextended_enabled)
367 return (0);
368
369 error = VOP_GETATTR(dvp, &vap, cred, curthread);
370 if (error)
371 return (error);
372 error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
373 if (error)
374 return (error);
375
376 error = VOP_GETATTR(vp, &vap, cred, curthread);
377 if (error)
378 return (error);
379 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE));
380}
381
382static int
383mac_bsdextended_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp,
384 struct label *label, acl_type_t type)
385{
386 struct vattr vap;
387 int error;
388
389 if (!mac_bsdextended_enabled)
390 return (0);
391
392 error = VOP_GETATTR(vp, &vap, cred, curthread);
393 if (error)
394 return (error);
395 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
396}
397
398static int
399mac_bsdextended_check_vnode_exec(struct ucred *cred, struct vnode *vp,
400 struct label *label)
401{
402 struct vattr vap;
403 int error;
404
405 if (!mac_bsdextended_enabled)
406 return (0);
407
408 error = VOP_GETATTR(vp, &vap, cred, curthread);
409 if (error)
410 return (error);
411 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid,
412 VREAD|VEXEC));
413}
414
415static int
416mac_bsdextended_check_vnode_getacl(struct ucred *cred, struct vnode *vp,
417 struct label *label, acl_type_t type)
418{
419 struct vattr vap;
420 int error;
421
422 if (!mac_bsdextended_enabled)
423 return (0);
424
425 error = VOP_GETATTR(vp, &vap, cred, curthread);
426 if (error)
427 return (error);
428 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VSTAT));
429}
430
431static int
432mac_bsdextended_check_vnode_getextattr(struct ucred *cred, struct vnode *vp,
433 struct label *label, int attrnamespace, const char *name, struct uio *uio)
434{
435 struct vattr vap;
436 int error;
437
438 if (!mac_bsdextended_enabled)
439 return (0);
440
441 error = VOP_GETATTR(vp, &vap, cred, curthread);
442 if (error)
443 return (error);
444 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
445}
446
447static int
448mac_bsdextended_check_vnode_lookup(struct ucred *cred, struct vnode *dvp,
449 struct label *dlabel, struct componentname *cnp)
450{
451 struct vattr vap;
452 int error;
453
454 if (!mac_bsdextended_enabled)
455 return (0);
456
457 error = VOP_GETATTR(dvp, &vap, cred, curthread);
458 if (error)
459 return (error);
460 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
461}
462
463static int
464mac_bsdextended_check_vnode_open(struct ucred *cred, struct vnode *vp,
465 struct label *filelabel, mode_t acc_mode)
466{
467 struct vattr vap;
468 int error;
469
470 if (!mac_bsdextended_enabled)
471 return (0);
472
473 error = VOP_GETATTR(vp, &vap, cred, curthread);
474 if (error)
475 return (error);
476 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, acc_mode));
477}
478
479static int
480mac_bsdextended_check_vnode_readdir(struct ucred *cred, struct vnode *dvp,
481 struct label *dlabel)
482{
483 struct vattr vap;
484 int error;
485
486 if (!mac_bsdextended_enabled)
487 return (0);
488
489 error = VOP_GETATTR(dvp, &vap, cred, curthread);
490 if (error)
491 return (error);
492 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
493}
494
495static int
496mac_bsdextended_check_vnode_readdlink(struct ucred *cred, struct vnode *vp,
497 struct label *label)
498{
499 struct vattr vap;
500 int error;
501
502 if (!mac_bsdextended_enabled)
503 return (0);
504
505 error = VOP_GETATTR(vp, &vap, cred, curthread);
506 if (error)
507 return (error);
508 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
509}
510
511static int
512mac_bsdextended_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp,
513 struct label *dlabel, struct vnode *vp, struct label *label,
514 struct componentname *cnp)
515{
516 struct vattr vap;
517 int error;
518
519 if (!mac_bsdextended_enabled)
520 return (0);
521
522 error = VOP_GETATTR(dvp, &vap, cred, curthread);
523 if (error)
524 return (error);
525 error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
526 if (error)
527 return (error);
528 error = VOP_GETATTR(vp, &vap, cred, curthread);
529 if (error)
530 return (error);
531 error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
532
533 return (error);
534}
535
536static int
537mac_bsdextended_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp,
538 struct label *dlabel, struct vnode *vp, struct label *label, int samedir,
539 struct componentname *cnp)
540{
541 struct vattr vap;
542 int error;
543
544 if (!mac_bsdextended_enabled)
545 return (0);
546
547 error = VOP_GETATTR(dvp, &vap, cred, curthread);
548 if (error)
549 return (error);
550 error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
551 if (error)
552 return (error);
553
554 if (vp != NULL) {
555 error = VOP_GETATTR(vp, &vap, cred, curthread);
556 if (error)
557 return (error);
558 error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid,
559 VWRITE);
560 }
561
562 return (error);
563}
564
565static int
566mac_bsdextended_check_vnode_revoke(struct ucred *cred, struct vnode *vp,
567 struct label *label)
568{
569 struct vattr vap;
570 int error;
571
572 if (!mac_bsdextended_enabled)
573 return (0);
574
575 error = VOP_GETATTR(vp, &vap, cred, curthread);
576 if (error)
577 return (error);
578 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
579}
580
581static int
582mac_bsdextended_check_setacl_vnode(struct ucred *cred, struct vnode *vp,
583 struct label *label, acl_type_t type, struct acl *acl)
584{
585 struct vattr vap;
586 int error;
587
588 if (!mac_bsdextended_enabled)
589 return (0);
590
591 error = VOP_GETATTR(vp, &vap, cred, curthread);
592 if (error)
593 return (error);
594 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
595}
596
597static int
598mac_bsdextended_check_vnode_setextattr(struct ucred *cred, struct vnode *vp,
599 struct label *label, int attrnamespace, const char *name, struct uio *uio)
600{
601 struct vattr vap;
602 int error;
603
604 if (!mac_bsdextended_enabled)
605 return (0);
606
607 error = VOP_GETATTR(vp, &vap, cred, curthread);
608 if (error)
609 return (error);
610 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE));
611}
612
613static int
614mac_bsdextended_check_vnode_setflags(struct ucred *cred, struct vnode *vp,
615 struct label *label, u_long flags)
616{
617 struct vattr vap;
618 int error;
619
620 if (!mac_bsdextended_enabled)
621 return (0);
622
623 error = VOP_GETATTR(vp, &vap, cred, curthread);
624 if (error)
625 return (error);
626 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
627}
628
629static int
630mac_bsdextended_check_vnode_setmode(struct ucred *cred, struct vnode *vp,
631 struct label *label, mode_t mode)
632{
633 struct vattr vap;
634 int error;
635
636 if (!mac_bsdextended_enabled)
637 return (0);
638
639 error = VOP_GETATTR(vp, &vap, cred, curthread);
640 if (error)
641 return (error);
642 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
643}
644
645static int
646mac_bsdextended_check_vnode_setowner(struct ucred *cred, struct vnode *vp,
647 struct label *label, uid_t uid, gid_t gid)
648{
649 struct vattr vap;
650 int error;
651
652 if (!mac_bsdextended_enabled)
653 return (0);
654
655 error = VOP_GETATTR(vp, &vap, cred, curthread);
656 if (error)
657 return (error);
658 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
659}
660
661static int
662mac_bsdextended_check_vnode_setutimes(struct ucred *cred, struct vnode *vp,
663 struct label *label, struct timespec atime, struct timespec utime)
664{
665 struct vattr vap;
666 int error;
667
668 if (!mac_bsdextended_enabled)
669 return (0);
670
671 error = VOP_GETATTR(vp, &vap, cred, curthread);
672 if (error)
673 return (error);
674 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
675}
676
677static int
678mac_bsdextended_check_vnode_stat(struct ucred *active_cred,
679 struct ucred *file_cred, struct vnode *vp, struct label *label)
680{
681 struct vattr vap;
682 int error;
683
684 if (!mac_bsdextended_enabled)
685 return (0);
686
687 error = VOP_GETATTR(vp, &vap, active_cred, curthread);
688 if (error)
689 return (error);
690 return (mac_bsdextended_check(active_cred, vap.va_uid, vap.va_gid,
691 VSTAT));
692}
693
694static struct mac_policy_op_entry mac_bsdextended_ops[] =
695{
696 { MAC_DESTROY,
697 (macop_t)mac_bsdextended_destroy },
698 { MAC_INIT,
699 (macop_t)mac_bsdextended_init },
700 { MAC_CHECK_VNODE_ACCESS,
701 (macop_t)mac_bsdextended_check_vnode_access },
702 { MAC_CHECK_VNODE_CHDIR,
703 (macop_t)mac_bsdextended_check_vnode_chdir },
704 { MAC_CHECK_VNODE_CHROOT,
705 (macop_t)mac_bsdextended_check_vnode_chroot },
706 { MAC_CHECK_VNODE_CREATE,
707 (macop_t)mac_bsdextended_check_create_vnode },
708 { MAC_CHECK_VNODE_DELETE,
709 (macop_t)mac_bsdextended_check_vnode_delete },
710 { MAC_CHECK_VNODE_DELETEACL,
711 (macop_t)mac_bsdextended_check_vnode_deleteacl },
712 { MAC_CHECK_VNODE_EXEC,
713 (macop_t)mac_bsdextended_check_vnode_exec },
714 { MAC_CHECK_VNODE_GETACL,
715 (macop_t)mac_bsdextended_check_vnode_getacl },
716 { MAC_CHECK_VNODE_GETEXTATTR,
717 (macop_t)mac_bsdextended_check_vnode_getextattr },
718 { MAC_CHECK_VNODE_LOOKUP,
719 (macop_t)mac_bsdextended_check_vnode_lookup },
720 { MAC_CHECK_VNODE_OPEN,
721 (macop_t)mac_bsdextended_check_vnode_open },
722 { MAC_CHECK_VNODE_READDIR,
723 (macop_t)mac_bsdextended_check_vnode_readdir },
724 { MAC_CHECK_VNODE_READLINK,
725 (macop_t)mac_bsdextended_check_vnode_readdlink },
726 { MAC_CHECK_VNODE_RENAME_FROM,
727 (macop_t)mac_bsdextended_check_vnode_rename_from },
728 { MAC_CHECK_VNODE_RENAME_TO,
729 (macop_t)mac_bsdextended_check_vnode_rename_to },
730 { MAC_CHECK_VNODE_REVOKE,
731 (macop_t)mac_bsdextended_check_vnode_revoke },
732 { MAC_CHECK_VNODE_SETACL,
733 (macop_t)mac_bsdextended_check_setacl_vnode },
734 { MAC_CHECK_VNODE_SETEXTATTR,
735 (macop_t)mac_bsdextended_check_vnode_setextattr },
736 { MAC_CHECK_VNODE_SETFLAGS,
737 (macop_t)mac_bsdextended_check_vnode_setflags },
738 { MAC_CHECK_VNODE_SETMODE,
739 (macop_t)mac_bsdextended_check_vnode_setmode },
740 { MAC_CHECK_VNODE_SETOWNER,
741 (macop_t)mac_bsdextended_check_vnode_setowner },
742 { MAC_CHECK_VNODE_SETUTIMES,
743 (macop_t)mac_bsdextended_check_vnode_setutimes },
744 { MAC_CHECK_VNODE_STAT,
745 (macop_t)mac_bsdextended_check_vnode_stat },
746 { MAC_OP_LAST, NULL }
747};
748
749MAC_POLICY_SET(mac_bsdextended_ops, trustedbsd_mac_bsdextended,
750 "TrustedBSD MAC/BSD Extended", MPC_LOADTIME_FLAG_UNLOADOK, NULL);
2 * Copyright (c) 1999, 2000, 2001, 2002 Robert N. M. Watson
3 * Copyright (c) 2001, 2002 Networks Associates Technology, Inc.
4 * All rights reserved.
5 *
6 * This software was developed by Robert Watson for the TrustedBSD Project.
7 *
8 * This software was developed for the FreeBSD Project in part by NAI Labs,
9 * the Security Research Division of Network Associates, Inc. under
10 * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
11 * CHATS research program.
12 *
13 * Redistribution and use in source and binary forms, with or without
14 * modification, are permitted provided that the following conditions
15 * are met:
16 * 1. Redistributions of source code must retain the above copyright
17 * notice, this list of conditions and the following disclaimer.
18 * 2. Redistributions in binary form must reproduce the above copyright
19 * notice, this list of conditions and the following disclaimer in the
20 * documentation and/or other materials provided with the distribution.
21 * 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_bsdextended/mac_bsdextended.c 102129 2002-08-19 19:04:53Z rwatson $
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 * XXX: Much locking support required here.
45 */
46
47#include <sys/types.h>
48#include <sys/param.h>
49#include <sys/acl.h>
50#include <sys/conf.h>
51#include <sys/kernel.h>
52#include <sys/mac.h>
53#include <sys/malloc.h>
54#include <sys/mount.h>
55#include <sys/proc.h>
56#include <sys/systm.h>
57#include <sys/sysproto.h>
58#include <sys/sysent.h>
59#include <sys/vnode.h>
60#include <sys/file.h>
61#include <sys/socket.h>
62#include <sys/socketvar.h>
63#include <sys/sysctl.h>
64
65#include <net/bpfdesc.h>
66#include <net/if.h>
67#include <net/if_types.h>
68#include <net/if_var.h>
69
70#include <vm/vm.h>
71
72#include <sys/mac_policy.h>
73
74#include <security/mac_bsdextended/mac_bsdextended.h>
75
76SYSCTL_DECL(_security_mac);
77
78SYSCTL_NODE(_security_mac, OID_AUTO, bsdextended, CTLFLAG_RW, 0,
79 "TrustedBSD extended BSD MAC policy controls");
80
81static int mac_bsdextended_enabled = 1;
82SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, enabled, CTLFLAG_RW,
83 &mac_bsdextended_enabled, 0, "Enforce extended BSD policy");
84TUNABLE_INT("security.mac.bsdextended.enabled", &mac_bsdextended_enabled);
85
86MALLOC_DEFINE(M_MACBSDEXTENDED, "mac_bsdextended", "BSD Extended MAC rule");
87
88#define MAC_BSDEXTENDED_MAXRULES 250
89static struct mac_bsdextended_rule *rules[MAC_BSDEXTENDED_MAXRULES];
90static int rule_count = 0;
91static int rule_slots = 0;
92
93SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_count, CTLFLAG_RD,
94 &rule_count, 0, "Number of defined rules\n");
95SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, rule_slots, CTLFLAG_RD,
96 &rule_slots, 0, "Number of used rule slots\n");
97
98static int mac_bsdextended_debugging;
99SYSCTL_INT(_security_mac_bsdextended, OID_AUTO, debugging, CTLFLAG_RW,
100 &mac_bsdextended_debugging, 0, "Enable debugging on failure");
101
102static int
103mac_bsdextended_rule_valid(struct mac_bsdextended_rule *rule)
104{
105
106 if ((rule->mbr_subject.mbi_flags | MBI_BITS) != MBI_BITS)
107 return (EINVAL);
108
109 if ((rule->mbr_object.mbi_flags | MBI_BITS) != MBI_BITS)
110 return (EINVAL);
111
112 if ((rule->mbr_mode | VALLPERM) != VALLPERM)
113 return (EINVAL);
114
115 return (0);
116}
117
118static int
119sysctl_rule(SYSCTL_HANDLER_ARGS)
120{
121 struct mac_bsdextended_rule temprule, *ruleptr;
122 u_int namelen;
123 int error, index, *name;
124
125 name = (int *)arg1;
126 namelen = arg2;
127
128 /* printf("bsdextended sysctl handler (namelen %d)\n", namelen); */
129
130 if (namelen != 1)
131 return (EINVAL);
132
133 index = name[0];
134 if (index < 0 || index > rule_slots + 1)
135 return (ENOENT);
136 if (rule_slots >= MAC_BSDEXTENDED_MAXRULES)
137 return (ENOENT);
138
139 if (req->oldptr) {
140 if (rules[index] == NULL)
141 return (ENOENT);
142
143 error = SYSCTL_OUT(req, rules[index], sizeof(*rules[index]));
144 if (error)
145 return (error);
146 }
147
148 if (req->newptr) {
149 if (req->newlen == 0) {
150 /* printf("deletion\n"); */
151 ruleptr = rules[index];
152 if (ruleptr == NULL)
153 return (ENOENT);
154 rule_count--;
155 rules[index] = NULL;
156 FREE(ruleptr, M_MACBSDEXTENDED);
157 return(0);
158 }
159 error = SYSCTL_IN(req, &temprule, sizeof(temprule));
160 if (error)
161 return (error);
162
163 error = mac_bsdextended_rule_valid(&temprule);
164 if (error)
165 return (error);
166
167 if (rules[index] == NULL) {
168 /* printf("addition\n"); */
169 MALLOC(ruleptr, struct mac_bsdextended_rule *,
170 sizeof(*ruleptr), M_MACBSDEXTENDED, M_WAITOK |
171 M_ZERO);
172 *ruleptr = temprule;
173 rules[index] = ruleptr;
174 if (index+1 > rule_slots)
175 rule_slots = index+1;
176 rule_count++;
177 } else {
178 /* printf("replacement\n"); */
179 *rules[index] = temprule;
180 }
181 }
182
183 return (0);
184}
185
186SYSCTL_NODE(_security_mac_bsdextended, OID_AUTO, rules,
187 CTLFLAG_RW, sysctl_rule, "BSD extended MAC rules");
188
189static void
190mac_bsdextended_init(struct mac_policy_conf *mpc)
191{
192
193 /* Initialize ruleset lock. */
194 /* Register dynamic sysctl's for rules. */
195}
196
197static void
198mac_bsdextended_destroy(struct mac_policy_conf *mpc)
199{
200
201 /* Tear down sysctls. */
202 /* Destroy ruleset lock. */
203}
204
205static int
206mac_bsdextended_rulecheck(struct mac_bsdextended_rule *rule,
207 struct ucred *cred, uid_t object_uid, gid_t object_gid, mode_t acc_mode)
208{
209 int match;
210
211 /*
212 * Is there a subject match?
213 */
214 if (rule->mbr_subject.mbi_flags & MBI_UID_DEFINED) {
215 match = (rule->mbr_subject.mbi_uid == cred->cr_uid ||
216 rule->mbr_subject.mbi_uid == cred->cr_ruid ||
217 rule->mbr_subject.mbi_uid == cred->cr_svuid);
218
219 if (rule->mbr_subject.mbi_flags & MBI_NEGATED)
220 match = !match;
221
222 if (!match)
223 return (0);
224 }
225
226 if (rule->mbr_subject.mbi_flags & MBI_GID_DEFINED) {
227 match = (groupmember(rule->mbr_subject.mbi_gid, cred) ||
228 rule->mbr_subject.mbi_gid == cred->cr_rgid ||
229 rule->mbr_subject.mbi_gid == cred->cr_svgid);
230
231 if (rule->mbr_subject.mbi_flags & MBI_NEGATED)
232 match = !match;
233
234 if (!match)
235 return (0);
236 }
237
238 /*
239 * Is there an object match?
240 */
241 if (rule->mbr_object.mbi_flags & MBI_UID_DEFINED) {
242 match = (rule->mbr_object.mbi_uid == object_uid);
243
244 if (rule->mbr_object.mbi_flags & MBI_NEGATED)
245 match = !match;
246
247 if (!match)
248 return (0);
249 }
250
251 if (rule->mbr_object.mbi_flags & MBI_GID_DEFINED) {
252 match = (rule->mbr_object.mbi_gid == object_gid);
253
254 if (rule->mbr_object.mbi_flags & MBI_NEGATED)
255 match = !match;
256
257 if (!match)
258 return (0);
259 }
260
261 /*
262 * Is the access permitted?
263 */
264 if ((rule->mbr_mode & acc_mode) != acc_mode) {
265 if (mac_bsdextended_debugging)
266 printf("mac_bsdextended: %d:%d request %d on %d:%d"
267 " fails\n", cred->cr_ruid, cred->cr_rgid,
268 acc_mode, object_uid, object_gid);
269 return (EACCES);
270 }
271
272 return (0);
273}
274
275static int
276mac_bsdextended_check(struct ucred *cred, uid_t object_uid, gid_t object_gid,
277 mode_t acc_mode)
278{
279 int error, i;
280
281 for (i = 0; i < rule_slots; i++) {
282 if (rules[i] == NULL)
283 continue;
284
285 error = mac_bsdextended_rulecheck(rules[i], cred, object_uid,
286 object_gid, acc_mode);
287 if (error)
288 return (error);
289 }
290
291 return (0);
292}
293
294static int
295mac_bsdextended_check_vnode_access(struct ucred *cred, struct vnode *vp,
296 struct label *label, mode_t flags)
297{
298 struct vattr vap;
299 int error;
300
301 if (!mac_bsdextended_enabled)
302 return (0);
303
304 error = VOP_GETATTR(vp, &vap, cred, curthread);
305 if (error)
306 return (error);
307 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, flags));
308}
309
310static int
311mac_bsdextended_check_vnode_chdir(struct ucred *cred, struct vnode *dvp,
312 struct label *dlabel)
313{
314 struct vattr vap;
315 int error;
316
317 if (!mac_bsdextended_enabled)
318 return (0);
319
320 error = VOP_GETATTR(dvp, &vap, cred, curthread);
321 if (error)
322 return (error);
323 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
324}
325
326static int
327mac_bsdextended_check_vnode_chroot(struct ucred *cred, struct vnode *dvp,
328 struct label *dlabel)
329{
330 struct vattr vap;
331 int error;
332
333 if (!mac_bsdextended_enabled)
334 return (0);
335
336 error = VOP_GETATTR(dvp, &vap, cred, curthread);
337 if (error)
338 return (error);
339 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
340}
341
342static int
343mac_bsdextended_check_create_vnode(struct ucred *cred, struct vnode *dvp,
344 struct label *dlabel, struct componentname *cnp, struct vattr *vap)
345{
346 struct vattr dvap;
347 int error;
348
349 if (!mac_bsdextended_enabled)
350 return (0);
351
352 error = VOP_GETATTR(dvp, &dvap, cred, curthread);
353 if (error)
354 return (error);
355 return (mac_bsdextended_check(cred, dvap.va_uid, dvap.va_gid, VWRITE));
356}
357
358static int
359mac_bsdextended_check_vnode_delete(struct ucred *cred, struct vnode *dvp,
360 struct label *dlabel, struct vnode *vp, struct label *label,
361 struct componentname *cnp)
362{
363 struct vattr vap;
364 int error;
365
366 if (!mac_bsdextended_enabled)
367 return (0);
368
369 error = VOP_GETATTR(dvp, &vap, cred, curthread);
370 if (error)
371 return (error);
372 error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
373 if (error)
374 return (error);
375
376 error = VOP_GETATTR(vp, &vap, cred, curthread);
377 if (error)
378 return (error);
379 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE));
380}
381
382static int
383mac_bsdextended_check_vnode_deleteacl(struct ucred *cred, struct vnode *vp,
384 struct label *label, acl_type_t type)
385{
386 struct vattr vap;
387 int error;
388
389 if (!mac_bsdextended_enabled)
390 return (0);
391
392 error = VOP_GETATTR(vp, &vap, cred, curthread);
393 if (error)
394 return (error);
395 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
396}
397
398static int
399mac_bsdextended_check_vnode_exec(struct ucred *cred, struct vnode *vp,
400 struct label *label)
401{
402 struct vattr vap;
403 int error;
404
405 if (!mac_bsdextended_enabled)
406 return (0);
407
408 error = VOP_GETATTR(vp, &vap, cred, curthread);
409 if (error)
410 return (error);
411 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid,
412 VREAD|VEXEC));
413}
414
415static int
416mac_bsdextended_check_vnode_getacl(struct ucred *cred, struct vnode *vp,
417 struct label *label, acl_type_t type)
418{
419 struct vattr vap;
420 int error;
421
422 if (!mac_bsdextended_enabled)
423 return (0);
424
425 error = VOP_GETATTR(vp, &vap, cred, curthread);
426 if (error)
427 return (error);
428 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VSTAT));
429}
430
431static int
432mac_bsdextended_check_vnode_getextattr(struct ucred *cred, struct vnode *vp,
433 struct label *label, int attrnamespace, const char *name, struct uio *uio)
434{
435 struct vattr vap;
436 int error;
437
438 if (!mac_bsdextended_enabled)
439 return (0);
440
441 error = VOP_GETATTR(vp, &vap, cred, curthread);
442 if (error)
443 return (error);
444 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
445}
446
447static int
448mac_bsdextended_check_vnode_lookup(struct ucred *cred, struct vnode *dvp,
449 struct label *dlabel, struct componentname *cnp)
450{
451 struct vattr vap;
452 int error;
453
454 if (!mac_bsdextended_enabled)
455 return (0);
456
457 error = VOP_GETATTR(dvp, &vap, cred, curthread);
458 if (error)
459 return (error);
460 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VEXEC));
461}
462
463static int
464mac_bsdextended_check_vnode_open(struct ucred *cred, struct vnode *vp,
465 struct label *filelabel, mode_t acc_mode)
466{
467 struct vattr vap;
468 int error;
469
470 if (!mac_bsdextended_enabled)
471 return (0);
472
473 error = VOP_GETATTR(vp, &vap, cred, curthread);
474 if (error)
475 return (error);
476 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, acc_mode));
477}
478
479static int
480mac_bsdextended_check_vnode_readdir(struct ucred *cred, struct vnode *dvp,
481 struct label *dlabel)
482{
483 struct vattr vap;
484 int error;
485
486 if (!mac_bsdextended_enabled)
487 return (0);
488
489 error = VOP_GETATTR(dvp, &vap, cred, curthread);
490 if (error)
491 return (error);
492 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
493}
494
495static int
496mac_bsdextended_check_vnode_readdlink(struct ucred *cred, struct vnode *vp,
497 struct label *label)
498{
499 struct vattr vap;
500 int error;
501
502 if (!mac_bsdextended_enabled)
503 return (0);
504
505 error = VOP_GETATTR(vp, &vap, cred, curthread);
506 if (error)
507 return (error);
508 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VREAD));
509}
510
511static int
512mac_bsdextended_check_vnode_rename_from(struct ucred *cred, struct vnode *dvp,
513 struct label *dlabel, struct vnode *vp, struct label *label,
514 struct componentname *cnp)
515{
516 struct vattr vap;
517 int error;
518
519 if (!mac_bsdextended_enabled)
520 return (0);
521
522 error = VOP_GETATTR(dvp, &vap, cred, curthread);
523 if (error)
524 return (error);
525 error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
526 if (error)
527 return (error);
528 error = VOP_GETATTR(vp, &vap, cred, curthread);
529 if (error)
530 return (error);
531 error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
532
533 return (error);
534}
535
536static int
537mac_bsdextended_check_vnode_rename_to(struct ucred *cred, struct vnode *dvp,
538 struct label *dlabel, struct vnode *vp, struct label *label, int samedir,
539 struct componentname *cnp)
540{
541 struct vattr vap;
542 int error;
543
544 if (!mac_bsdextended_enabled)
545 return (0);
546
547 error = VOP_GETATTR(dvp, &vap, cred, curthread);
548 if (error)
549 return (error);
550 error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE);
551 if (error)
552 return (error);
553
554 if (vp != NULL) {
555 error = VOP_GETATTR(vp, &vap, cred, curthread);
556 if (error)
557 return (error);
558 error = mac_bsdextended_check(cred, vap.va_uid, vap.va_gid,
559 VWRITE);
560 }
561
562 return (error);
563}
564
565static int
566mac_bsdextended_check_vnode_revoke(struct ucred *cred, struct vnode *vp,
567 struct label *label)
568{
569 struct vattr vap;
570 int error;
571
572 if (!mac_bsdextended_enabled)
573 return (0);
574
575 error = VOP_GETATTR(vp, &vap, cred, curthread);
576 if (error)
577 return (error);
578 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
579}
580
581static int
582mac_bsdextended_check_setacl_vnode(struct ucred *cred, struct vnode *vp,
583 struct label *label, acl_type_t type, struct acl *acl)
584{
585 struct vattr vap;
586 int error;
587
588 if (!mac_bsdextended_enabled)
589 return (0);
590
591 error = VOP_GETATTR(vp, &vap, cred, curthread);
592 if (error)
593 return (error);
594 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
595}
596
597static int
598mac_bsdextended_check_vnode_setextattr(struct ucred *cred, struct vnode *vp,
599 struct label *label, int attrnamespace, const char *name, struct uio *uio)
600{
601 struct vattr vap;
602 int error;
603
604 if (!mac_bsdextended_enabled)
605 return (0);
606
607 error = VOP_GETATTR(vp, &vap, cred, curthread);
608 if (error)
609 return (error);
610 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VWRITE));
611}
612
613static int
614mac_bsdextended_check_vnode_setflags(struct ucred *cred, struct vnode *vp,
615 struct label *label, u_long flags)
616{
617 struct vattr vap;
618 int error;
619
620 if (!mac_bsdextended_enabled)
621 return (0);
622
623 error = VOP_GETATTR(vp, &vap, cred, curthread);
624 if (error)
625 return (error);
626 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
627}
628
629static int
630mac_bsdextended_check_vnode_setmode(struct ucred *cred, struct vnode *vp,
631 struct label *label, mode_t mode)
632{
633 struct vattr vap;
634 int error;
635
636 if (!mac_bsdextended_enabled)
637 return (0);
638
639 error = VOP_GETATTR(vp, &vap, cred, curthread);
640 if (error)
641 return (error);
642 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
643}
644
645static int
646mac_bsdextended_check_vnode_setowner(struct ucred *cred, struct vnode *vp,
647 struct label *label, uid_t uid, gid_t gid)
648{
649 struct vattr vap;
650 int error;
651
652 if (!mac_bsdextended_enabled)
653 return (0);
654
655 error = VOP_GETATTR(vp, &vap, cred, curthread);
656 if (error)
657 return (error);
658 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
659}
660
661static int
662mac_bsdextended_check_vnode_setutimes(struct ucred *cred, struct vnode *vp,
663 struct label *label, struct timespec atime, struct timespec utime)
664{
665 struct vattr vap;
666 int error;
667
668 if (!mac_bsdextended_enabled)
669 return (0);
670
671 error = VOP_GETATTR(vp, &vap, cred, curthread);
672 if (error)
673 return (error);
674 return (mac_bsdextended_check(cred, vap.va_uid, vap.va_gid, VADMIN));
675}
676
677static int
678mac_bsdextended_check_vnode_stat(struct ucred *active_cred,
679 struct ucred *file_cred, struct vnode *vp, struct label *label)
680{
681 struct vattr vap;
682 int error;
683
684 if (!mac_bsdextended_enabled)
685 return (0);
686
687 error = VOP_GETATTR(vp, &vap, active_cred, curthread);
688 if (error)
689 return (error);
690 return (mac_bsdextended_check(active_cred, vap.va_uid, vap.va_gid,
691 VSTAT));
692}
693
694static struct mac_policy_op_entry mac_bsdextended_ops[] =
695{
696 { MAC_DESTROY,
697 (macop_t)mac_bsdextended_destroy },
698 { MAC_INIT,
699 (macop_t)mac_bsdextended_init },
700 { MAC_CHECK_VNODE_ACCESS,
701 (macop_t)mac_bsdextended_check_vnode_access },
702 { MAC_CHECK_VNODE_CHDIR,
703 (macop_t)mac_bsdextended_check_vnode_chdir },
704 { MAC_CHECK_VNODE_CHROOT,
705 (macop_t)mac_bsdextended_check_vnode_chroot },
706 { MAC_CHECK_VNODE_CREATE,
707 (macop_t)mac_bsdextended_check_create_vnode },
708 { MAC_CHECK_VNODE_DELETE,
709 (macop_t)mac_bsdextended_check_vnode_delete },
710 { MAC_CHECK_VNODE_DELETEACL,
711 (macop_t)mac_bsdextended_check_vnode_deleteacl },
712 { MAC_CHECK_VNODE_EXEC,
713 (macop_t)mac_bsdextended_check_vnode_exec },
714 { MAC_CHECK_VNODE_GETACL,
715 (macop_t)mac_bsdextended_check_vnode_getacl },
716 { MAC_CHECK_VNODE_GETEXTATTR,
717 (macop_t)mac_bsdextended_check_vnode_getextattr },
718 { MAC_CHECK_VNODE_LOOKUP,
719 (macop_t)mac_bsdextended_check_vnode_lookup },
720 { MAC_CHECK_VNODE_OPEN,
721 (macop_t)mac_bsdextended_check_vnode_open },
722 { MAC_CHECK_VNODE_READDIR,
723 (macop_t)mac_bsdextended_check_vnode_readdir },
724 { MAC_CHECK_VNODE_READLINK,
725 (macop_t)mac_bsdextended_check_vnode_readdlink },
726 { MAC_CHECK_VNODE_RENAME_FROM,
727 (macop_t)mac_bsdextended_check_vnode_rename_from },
728 { MAC_CHECK_VNODE_RENAME_TO,
729 (macop_t)mac_bsdextended_check_vnode_rename_to },
730 { MAC_CHECK_VNODE_REVOKE,
731 (macop_t)mac_bsdextended_check_vnode_revoke },
732 { MAC_CHECK_VNODE_SETACL,
733 (macop_t)mac_bsdextended_check_setacl_vnode },
734 { MAC_CHECK_VNODE_SETEXTATTR,
735 (macop_t)mac_bsdextended_check_vnode_setextattr },
736 { MAC_CHECK_VNODE_SETFLAGS,
737 (macop_t)mac_bsdextended_check_vnode_setflags },
738 { MAC_CHECK_VNODE_SETMODE,
739 (macop_t)mac_bsdextended_check_vnode_setmode },
740 { MAC_CHECK_VNODE_SETOWNER,
741 (macop_t)mac_bsdextended_check_vnode_setowner },
742 { MAC_CHECK_VNODE_SETUTIMES,
743 (macop_t)mac_bsdextended_check_vnode_setutimes },
744 { MAC_CHECK_VNODE_STAT,
745 (macop_t)mac_bsdextended_check_vnode_stat },
746 { MAC_OP_LAST, NULL }
747};
748
749MAC_POLICY_SET(mac_bsdextended_ops, trustedbsd_mac_bsdextended,
750 "TrustedBSD MAC/BSD Extended", MPC_LOADTIME_FLAG_UNLOADOK, NULL);