1 /*-
2 * Copyright (c) 1999-2005 Apple Inc.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. Neither the name of Apple Inc. ("Apple") nor the names of
14 * its contributors may be used to endorse or promote products derived
15 * from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR
21 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
25 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
26 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
27 * POSSIBILITY OF SUCH DAMAGE.
28 */
29
30 #include <sys/cdefs.h>
31 __FBSDID("$FreeBSD$");
32
33 #include <sys/param.h>
34 #include <sys/filedesc.h>
35 #include <sys/ipc.h>
36 #include <sys/mount.h>
37 #include <sys/proc.h>
38 #include <sys/socket.h>
39 #include <sys/socketvar.h>
40 #include <sys/protosw.h>
41 #include <sys/domain.h>
42 #include <sys/sbuf.h>
43 #include <sys/systm.h>
44 #include <sys/un.h>
45 #include <sys/vnode.h>
46
47 #include <netinet/in.h>
48 #include <netinet/in_pcb.h>
49
50 #include <security/audit/audit.h>
51 #include <security/audit/audit_private.h>
52
53 /*
54 * Calls to manipulate elements of the audit record structure from system
55 * call code. Macro wrappers will prevent this functions from being entered
56 * if auditing is disabled, avoiding the function call cost. We check the
57 * thread audit record pointer anyway, as the audit condition could change,
58 * and pre-selection may not have allocated an audit record for this event.
59 *
60 * XXXAUDIT: Should we assert, in each case, that this field of the record
61 * hasn't already been filled in?
62 */
63 void
64 audit_arg_addr(void *addr)
65 {
66 struct kaudit_record *ar;
67
68 ar = currecord();
69 if (ar == NULL)
70 return;
71
72 ar->k_ar.ar_arg_addr = addr;
73 ARG_SET_VALID(ar, ARG_ADDR);
74 }
75
76 void
77 audit_arg_exit(int status, int retval)
78 {
79 struct kaudit_record *ar;
80
81 ar = currecord();
82 if (ar == NULL)
83 return;
84
85 ar->k_ar.ar_arg_exitstatus = status;
86 ar->k_ar.ar_arg_exitretval = retval;
87 ARG_SET_VALID(ar, ARG_EXIT);
88 }
89
90 void
91 audit_arg_len(int len)
92 {
93 struct kaudit_record *ar;
94
95 ar = currecord();
96 if (ar == NULL)
97 return;
98
99 ar->k_ar.ar_arg_len = len;
100 ARG_SET_VALID(ar, ARG_LEN);
101 }
102
103 void
104 audit_arg_atfd1(int atfd)
105 {
106 struct kaudit_record *ar;
107
108 ar = currecord();
109 if (ar == NULL)
110 return;
111
112 ar->k_ar.ar_arg_atfd1 = atfd;
113 ARG_SET_VALID(ar, ARG_ATFD1);
114 }
115
116 void
117 audit_arg_atfd2(int atfd)
118 {
119 struct kaudit_record *ar;
120
121 ar = currecord();
122 if (ar == NULL)
123 return;
124
125 ar->k_ar.ar_arg_atfd2 = atfd;
126 ARG_SET_VALID(ar, ARG_ATFD2);
127 }
128
129 void
130 audit_arg_fd(int fd)
131 {
132 struct kaudit_record *ar;
133
134 ar = currecord();
135 if (ar == NULL)
136 return;
137
138 ar->k_ar.ar_arg_fd = fd;
139 ARG_SET_VALID(ar, ARG_FD);
140 }
141
142 void
143 audit_arg_fflags(int fflags)
144 {
145 struct kaudit_record *ar;
146
147 ar = currecord();
148 if (ar == NULL)
149 return;
150
151 ar->k_ar.ar_arg_fflags = fflags;
152 ARG_SET_VALID(ar, ARG_FFLAGS);
153 }
154
155 void
156 audit_arg_gid(gid_t gid)
157 {
158 struct kaudit_record *ar;
159
160 ar = currecord();
161 if (ar == NULL)
162 return;
163
164 ar->k_ar.ar_arg_gid = gid;
165 ARG_SET_VALID(ar, ARG_GID);
166 }
167
168 void
169 audit_arg_uid(uid_t uid)
170 {
171 struct kaudit_record *ar;
172
173 ar = currecord();
174 if (ar == NULL)
175 return;
176
177 ar->k_ar.ar_arg_uid = uid;
178 ARG_SET_VALID(ar, ARG_UID);
179 }
180
181 void
182 audit_arg_egid(gid_t egid)
183 {
184 struct kaudit_record *ar;
185
186 ar = currecord();
187 if (ar == NULL)
188 return;
189
190 ar->k_ar.ar_arg_egid = egid;
191 ARG_SET_VALID(ar, ARG_EGID);
192 }
193
194 void
195 audit_arg_euid(uid_t euid)
196 {
197 struct kaudit_record *ar;
198
199 ar = currecord();
200 if (ar == NULL)
201 return;
202
203 ar->k_ar.ar_arg_euid = euid;
204 ARG_SET_VALID(ar, ARG_EUID);
205 }
206
207 void
208 audit_arg_rgid(gid_t rgid)
209 {
210 struct kaudit_record *ar;
211
212 ar = currecord();
213 if (ar == NULL)
214 return;
215
216 ar->k_ar.ar_arg_rgid = rgid;
217 ARG_SET_VALID(ar, ARG_RGID);
218 }
219
220 void
221 audit_arg_ruid(uid_t ruid)
222 {
223 struct kaudit_record *ar;
224
225 ar = currecord();
226 if (ar == NULL)
227 return;
228
229 ar->k_ar.ar_arg_ruid = ruid;
230 ARG_SET_VALID(ar, ARG_RUID);
231 }
232
233 void
234 audit_arg_sgid(gid_t sgid)
235 {
236 struct kaudit_record *ar;
237
238 ar = currecord();
239 if (ar == NULL)
240 return;
241
242 ar->k_ar.ar_arg_sgid = sgid;
243 ARG_SET_VALID(ar, ARG_SGID);
244 }
245
246 void
247 audit_arg_suid(uid_t suid)
248 {
249 struct kaudit_record *ar;
250
251 ar = currecord();
252 if (ar == NULL)
253 return;
254
255 ar->k_ar.ar_arg_suid = suid;
256 ARG_SET_VALID(ar, ARG_SUID);
257 }
258
259 void
260 audit_arg_groupset(gid_t *gidset, u_int gidset_size)
261 {
262 u_int i;
263 struct kaudit_record *ar;
264
265 KASSERT(gidset_size <= ngroups_max + 1,
266 ("audit_arg_groupset: gidset_size > (kern.ngroups + 1)"));
267
268 ar = currecord();
269 if (ar == NULL)
270 return;
271
272 if (ar->k_ar.ar_arg_groups.gidset == NULL)
273 ar->k_ar.ar_arg_groups.gidset = malloc(
274 sizeof(gid_t) * gidset_size, M_AUDITGIDSET, M_WAITOK);
275
276 for (i = 0; i < gidset_size; i++)
277 ar->k_ar.ar_arg_groups.gidset[i] = gidset[i];
278 ar->k_ar.ar_arg_groups.gidset_size = gidset_size;
279 ARG_SET_VALID(ar, ARG_GROUPSET);
280 }
281
282 void
283 audit_arg_login(char *login)
284 {
285 struct kaudit_record *ar;
286
287 ar = currecord();
288 if (ar == NULL)
289 return;
290
291 strlcpy(ar->k_ar.ar_arg_login, login, MAXLOGNAME);
292 ARG_SET_VALID(ar, ARG_LOGIN);
293 }
294
295 void
296 audit_arg_ctlname(int *name, int namelen)
297 {
298 struct kaudit_record *ar;
299
300 ar = currecord();
301 if (ar == NULL)
302 return;
303
304 bcopy(name, &ar->k_ar.ar_arg_ctlname, namelen * sizeof(int));
305 ar->k_ar.ar_arg_len = namelen;
306 ARG_SET_VALID(ar, ARG_CTLNAME | ARG_LEN);
307 }
308
309 void
310 audit_arg_mask(int mask)
311 {
312 struct kaudit_record *ar;
313
314 ar = currecord();
315 if (ar == NULL)
316 return;
317
318 ar->k_ar.ar_arg_mask = mask;
319 ARG_SET_VALID(ar, ARG_MASK);
320 }
321
322 void
323 audit_arg_mode(mode_t mode)
324 {
325 struct kaudit_record *ar;
326
327 ar = currecord();
328 if (ar == NULL)
329 return;
330
331 ar->k_ar.ar_arg_mode = mode;
332 ARG_SET_VALID(ar, ARG_MODE);
333 }
334
335 void
336 audit_arg_dev(int dev)
337 {
338 struct kaudit_record *ar;
339
340 ar = currecord();
341 if (ar == NULL)
342 return;
343
344 ar->k_ar.ar_arg_dev = dev;
345 ARG_SET_VALID(ar, ARG_DEV);
346 }
347
348 void
349 audit_arg_value(long value)
350 {
351 struct kaudit_record *ar;
352
353 ar = currecord();
354 if (ar == NULL)
355 return;
356
357 ar->k_ar.ar_arg_value = value;
358 ARG_SET_VALID(ar, ARG_VALUE);
359 }
360
361 void
362 audit_arg_owner(uid_t uid, gid_t gid)
363 {
364 struct kaudit_record *ar;
365
366 ar = currecord();
367 if (ar == NULL)
368 return;
369
370 ar->k_ar.ar_arg_uid = uid;
371 ar->k_ar.ar_arg_gid = gid;
372 ARG_SET_VALID(ar, ARG_UID | ARG_GID);
373 }
374
375 void
376 audit_arg_pid(pid_t pid)
377 {
378 struct kaudit_record *ar;
379
380 ar = currecord();
381 if (ar == NULL)
382 return;
383
384 ar->k_ar.ar_arg_pid = pid;
385 ARG_SET_VALID(ar, ARG_PID);
386 }
387
388 void
389 audit_arg_process(struct proc *p)
390 {
391 struct kaudit_record *ar;
392 struct ucred *cred;
393
394 KASSERT(p != NULL, ("audit_arg_process: p == NULL"));
395
396 PROC_LOCK_ASSERT(p, MA_OWNED);
397
398 ar = currecord();
399 if (ar == NULL)
400 return;
401
402 cred = p->p_ucred;
403 ar->k_ar.ar_arg_auid = cred->cr_audit.ai_auid;
404 ar->k_ar.ar_arg_euid = cred->cr_uid;
405 ar->k_ar.ar_arg_egid = cred->cr_groups[0];
406 ar->k_ar.ar_arg_ruid = cred->cr_ruid;
407 ar->k_ar.ar_arg_rgid = cred->cr_rgid;
408 ar->k_ar.ar_arg_asid = cred->cr_audit.ai_asid;
409 ar->k_ar.ar_arg_termid_addr = cred->cr_audit.ai_termid;
410 ar->k_ar.ar_arg_pid = p->p_pid;
411 ARG_SET_VALID(ar, ARG_AUID | ARG_EUID | ARG_EGID | ARG_RUID |
412 ARG_RGID | ARG_ASID | ARG_TERMID_ADDR | ARG_PID | ARG_PROCESS);
413 }
414
415 void
416 audit_arg_signum(u_int signum)
417 {
418 struct kaudit_record *ar;
419
420 ar = currecord();
421 if (ar == NULL)
422 return;
423
424 ar->k_ar.ar_arg_signum = signum;
425 ARG_SET_VALID(ar, ARG_SIGNUM);
426 }
427
428 void
429 audit_arg_socket(int sodomain, int sotype, int soprotocol)
430 {
431 struct kaudit_record *ar;
432
433 ar = currecord();
434 if (ar == NULL)
435 return;
436
437 ar->k_ar.ar_arg_sockinfo.so_domain = sodomain;
438 ar->k_ar.ar_arg_sockinfo.so_type = sotype;
439 ar->k_ar.ar_arg_sockinfo.so_protocol = soprotocol;
440 ARG_SET_VALID(ar, ARG_SOCKINFO);
441 }
442
443 void
444 audit_arg_sockaddr(struct thread *td, int dirfd, struct sockaddr *sa)
445 {
446 struct kaudit_record *ar;
447
448 KASSERT(td != NULL, ("audit_arg_sockaddr: td == NULL"));
449 KASSERT(sa != NULL, ("audit_arg_sockaddr: sa == NULL"));
450
451 ar = currecord();
452 if (ar == NULL)
453 return;
454
455 bcopy(sa, &ar->k_ar.ar_arg_sockaddr, sa->sa_len);
456 switch (sa->sa_family) {
457 case AF_INET:
458 ARG_SET_VALID(ar, ARG_SADDRINET);
459 break;
460
461 case AF_INET6:
462 ARG_SET_VALID(ar, ARG_SADDRINET6);
463 break;
464
465 case AF_UNIX:
466 if (dirfd != AT_FDCWD)
467 audit_arg_atfd1(dirfd);
468 audit_arg_upath1(td, dirfd,
469 ((struct sockaddr_un *)sa)->sun_path);
470 ARG_SET_VALID(ar, ARG_SADDRUNIX);
471 break;
472 /* XXXAUDIT: default:? */
473 }
474 }
475
476 void
477 audit_arg_auid(uid_t auid)
478 {
479 struct kaudit_record *ar;
480
481 ar = currecord();
482 if (ar == NULL)
483 return;
484
485 ar->k_ar.ar_arg_auid = auid;
486 ARG_SET_VALID(ar, ARG_AUID);
487 }
488
489 void
490 audit_arg_auditinfo(struct auditinfo *au_info)
491 {
492 struct kaudit_record *ar;
493
494 ar = currecord();
495 if (ar == NULL)
496 return;
497
498 ar->k_ar.ar_arg_auid = au_info->ai_auid;
499 ar->k_ar.ar_arg_asid = au_info->ai_asid;
500 ar->k_ar.ar_arg_amask.am_success = au_info->ai_mask.am_success;
501 ar->k_ar.ar_arg_amask.am_failure = au_info->ai_mask.am_failure;
502 ar->k_ar.ar_arg_termid.port = au_info->ai_termid.port;
503 ar->k_ar.ar_arg_termid.machine = au_info->ai_termid.machine;
504 ARG_SET_VALID(ar, ARG_AUID | ARG_ASID | ARG_AMASK | ARG_TERMID);
505 }
506
507 void
508 audit_arg_auditinfo_addr(struct auditinfo_addr *au_info)
509 {
510 struct kaudit_record *ar;
511
512 ar = currecord();
513 if (ar == NULL)
514 return;
515
516 ar->k_ar.ar_arg_auid = au_info->ai_auid;
517 ar->k_ar.ar_arg_asid = au_info->ai_asid;
518 ar->k_ar.ar_arg_amask.am_success = au_info->ai_mask.am_success;
519 ar->k_ar.ar_arg_amask.am_failure = au_info->ai_mask.am_failure;
520 ar->k_ar.ar_arg_termid_addr.at_type = au_info->ai_termid.at_type;
521 ar->k_ar.ar_arg_termid_addr.at_port = au_info->ai_termid.at_port;
522 ar->k_ar.ar_arg_termid_addr.at_addr[0] = au_info->ai_termid.at_addr[0];
523 ar->k_ar.ar_arg_termid_addr.at_addr[1] = au_info->ai_termid.at_addr[1];
524 ar->k_ar.ar_arg_termid_addr.at_addr[2] = au_info->ai_termid.at_addr[2];
525 ar->k_ar.ar_arg_termid_addr.at_addr[3] = au_info->ai_termid.at_addr[3];
526 ARG_SET_VALID(ar, ARG_AUID | ARG_ASID | ARG_AMASK | ARG_TERMID_ADDR);
527 }
528
529 void
530 audit_arg_text(char *text)
531 {
532 struct kaudit_record *ar;
533
534 KASSERT(text != NULL, ("audit_arg_text: text == NULL"));
535
536 ar = currecord();
537 if (ar == NULL)
538 return;
539
540 /* Invalidate the text string */
541 ar->k_ar.ar_valid_arg &= (ARG_ALL ^ ARG_TEXT);
542
543 if (ar->k_ar.ar_arg_text == NULL)
544 ar->k_ar.ar_arg_text = malloc(MAXPATHLEN, M_AUDITTEXT,
545 M_WAITOK);
546
547 strncpy(ar->k_ar.ar_arg_text, text, MAXPATHLEN);
548 ARG_SET_VALID(ar, ARG_TEXT);
549 }
550
551 void
552 audit_arg_cmd(int cmd)
553 {
554 struct kaudit_record *ar;
555
556 ar = currecord();
557 if (ar == NULL)
558 return;
559
560 ar->k_ar.ar_arg_cmd = cmd;
561 ARG_SET_VALID(ar, ARG_CMD);
562 }
563
564 void
565 audit_arg_svipc_cmd(int cmd)
566 {
567 struct kaudit_record *ar;
568
569 ar = currecord();
570 if (ar == NULL)
571 return;
572
573 ar->k_ar.ar_arg_svipc_cmd = cmd;
574 ARG_SET_VALID(ar, ARG_SVIPC_CMD);
575 }
576
577 void
578 audit_arg_svipc_perm(struct ipc_perm *perm)
579 {
580 struct kaudit_record *ar;
581
582 ar = currecord();
583 if (ar == NULL)
584 return;
585
586 bcopy(perm, &ar->k_ar.ar_arg_svipc_perm,
587 sizeof(ar->k_ar.ar_arg_svipc_perm));
588 ARG_SET_VALID(ar, ARG_SVIPC_PERM);
589 }
590
591 void
592 audit_arg_svipc_id(int id)
593 {
594 struct kaudit_record *ar;
595
596 ar = currecord();
597 if (ar == NULL)
598 return;
599
600 ar->k_ar.ar_arg_svipc_id = id;
601 ARG_SET_VALID(ar, ARG_SVIPC_ID);
602 }
603
604 void
605 audit_arg_svipc_addr(void * addr)
606 {
607 struct kaudit_record *ar;
608
609 ar = currecord();
610 if (ar == NULL)
611 return;
612
613 ar->k_ar.ar_arg_svipc_addr = addr;
614 ARG_SET_VALID(ar, ARG_SVIPC_ADDR);
615 }
616
617 void
618 audit_arg_posix_ipc_perm(uid_t uid, gid_t gid, mode_t mode)
619 {
620 struct kaudit_record *ar;
621
622 ar = currecord();
623 if (ar == NULL)
624 return;
625
626 ar->k_ar.ar_arg_pipc_perm.pipc_uid = uid;
627 ar->k_ar.ar_arg_pipc_perm.pipc_gid = gid;
628 ar->k_ar.ar_arg_pipc_perm.pipc_mode = mode;
629 ARG_SET_VALID(ar, ARG_POSIX_IPC_PERM);
630 }
631
632 void
633 audit_arg_auditon(union auditon_udata *udata)
634 {
635 struct kaudit_record *ar;
636
637 ar = currecord();
638 if (ar == NULL)
639 return;
640
641 bcopy((void *)udata, &ar->k_ar.ar_arg_auditon,
642 sizeof(ar->k_ar.ar_arg_auditon));
643 ARG_SET_VALID(ar, ARG_AUDITON);
644 }
645
646 /*
647 * Audit information about a file, either the file's vnode info, or its
648 * socket address info.
649 */
650 void
651 audit_arg_file(struct proc *p, struct file *fp)
652 {
653 struct kaudit_record *ar;
654 struct socket *so;
655 struct inpcb *pcb;
656 struct vnode *vp;
657
658 ar = currecord();
659 if (ar == NULL)
660 return;
661
662 switch (fp->f_type) {
663 case DTYPE_VNODE:
664 case DTYPE_FIFO:
665 /*
666 * XXXAUDIT: Only possibly to record as first vnode?
667 */
668 vp = fp->f_vnode;
669 vn_lock(vp, LK_SHARED | LK_RETRY);
670 audit_arg_vnode1(vp);
671 VOP_UNLOCK(vp, 0);
672 break;
673
674 case DTYPE_SOCKET:
675 so = (struct socket *)fp->f_data;
676 if (INP_CHECK_SOCKAF(so, PF_INET)) {
677 SOCK_LOCK(so);
678 ar->k_ar.ar_arg_sockinfo.so_type =
679 so->so_type;
680 ar->k_ar.ar_arg_sockinfo.so_domain =
681 INP_SOCKAF(so);
682 ar->k_ar.ar_arg_sockinfo.so_protocol =
683 so->so_proto->pr_protocol;
684 SOCK_UNLOCK(so);
685 pcb = (struct inpcb *)so->so_pcb;
686 INP_RLOCK(pcb);
687 ar->k_ar.ar_arg_sockinfo.so_raddr =
688 pcb->inp_faddr.s_addr;
689 ar->k_ar.ar_arg_sockinfo.so_laddr =
690 pcb->inp_laddr.s_addr;
691 ar->k_ar.ar_arg_sockinfo.so_rport =
692 pcb->inp_fport;
693 ar->k_ar.ar_arg_sockinfo.so_lport =
694 pcb->inp_lport;
695 INP_RUNLOCK(pcb);
696 ARG_SET_VALID(ar, ARG_SOCKINFO);
697 }
698 break;
699
700 default:
701 /* XXXAUDIT: else? */
702 break;
703 }
704 }
705
706 /*
707 * Store a path as given by the user process for auditing into the audit
708 * record stored on the user thread. This function will allocate the memory
709 * to store the path info if not already available. This memory will be
710 * freed when the audit record is freed.
711 */
712 static void
713 audit_arg_upath(struct thread *td, int dirfd, char *upath, char **pathp)
714 {
715
716 if (*pathp == NULL)
717 *pathp = malloc(MAXPATHLEN, M_AUDITPATH, M_WAITOK);
718 audit_canon_path(td, dirfd, upath, *pathp);
719 }
720
721 void
722 audit_arg_upath1(struct thread *td, int dirfd, char *upath)
723 {
724 struct kaudit_record *ar;
725
726 ar = currecord();
727 if (ar == NULL)
728 return;
729
730 audit_arg_upath(td, dirfd, upath, &ar->k_ar.ar_arg_upath1);
731 ARG_SET_VALID(ar, ARG_UPATH1);
732 }
733
734 void
735 audit_arg_upath2(struct thread *td, int dirfd, char *upath)
736 {
737 struct kaudit_record *ar;
738
739 ar = currecord();
740 if (ar == NULL)
741 return;
742
743 audit_arg_upath(td, dirfd, upath, &ar->k_ar.ar_arg_upath2);
744 ARG_SET_VALID(ar, ARG_UPATH2);
745 }
746
747 /*
748 * Function to save the path and vnode attr information into the audit
749 * record.
750 *
751 * It is assumed that the caller will hold any vnode locks necessary to
752 * perform a VOP_GETATTR() on the passed vnode.
753 *
754 * XXX: The attr code is very similar to vfs_vnops.c:vn_stat(), but always
755 * provides access to the generation number as we need that to construct the
756 * BSM file ID.
757 *
758 * XXX: We should accept the process argument from the caller, since it's
759 * very likely they already have a reference.
760 *
761 * XXX: Error handling in this function is poor.
762 *
763 * XXXAUDIT: Possibly KASSERT the path pointer is NULL?
764 */
765 static int
766 audit_arg_vnode(struct vnode *vp, struct vnode_au_info *vnp)
767 {
768 struct vattr vattr;
769 int error;
770
771 ASSERT_VOP_LOCKED(vp, "audit_arg_vnode");
772
773 error = VOP_GETATTR(vp, &vattr, curthread->td_ucred);
774 if (error) {
775 /* XXX: How to handle this case? */
776 return (error);
777 }
778
779 vnp->vn_mode = vattr.va_mode;
780 vnp->vn_uid = vattr.va_uid;
781 vnp->vn_gid = vattr.va_gid;
782 vnp->vn_dev = vattr.va_rdev;
783 vnp->vn_fsid = vattr.va_fsid;
784 vnp->vn_fileid = vattr.va_fileid;
785 vnp->vn_gen = vattr.va_gen;
786 return (0);
787 }
788
789 void
790 audit_arg_vnode1(struct vnode *vp)
791 {
792 struct kaudit_record *ar;
793 int error;
794
795 ar = currecord();
796 if (ar == NULL)
797 return;
798
799 ARG_CLEAR_VALID(ar, ARG_VNODE1);
800 error = audit_arg_vnode(vp, &ar->k_ar.ar_arg_vnode1);
801 if (error == 0)
802 ARG_SET_VALID(ar, ARG_VNODE1);
803 }
804
805 void
806 audit_arg_vnode2(struct vnode *vp)
807 {
808 struct kaudit_record *ar;
809 int error;
810
811 ar = currecord();
812 if (ar == NULL)
813 return;
814
815 ARG_CLEAR_VALID(ar, ARG_VNODE2);
816 error = audit_arg_vnode(vp, &ar->k_ar.ar_arg_vnode2);
817 if (error == 0)
818 ARG_SET_VALID(ar, ARG_VNODE2);
819 }
820
821 /*
822 * Audit the argument strings passed to exec.
823 */
824 void
825 audit_arg_argv(char *argv, int argc, int length)
826 {
827 struct kaudit_record *ar;
828
829 if (audit_argv == 0)
830 return;
831
832 ar = currecord();
833 if (ar == NULL)
834 return;
835
836 ar->k_ar.ar_arg_argv = malloc(length, M_AUDITTEXT, M_WAITOK);
837 bcopy(argv, ar->k_ar.ar_arg_argv, length);
838 ar->k_ar.ar_arg_argc = argc;
839 ARG_SET_VALID(ar, ARG_ARGV);
840 }
841
842 /*
843 * Audit the environment strings passed to exec.
844 */
845 void
846 audit_arg_envv(char *envv, int envc, int length)
847 {
848 struct kaudit_record *ar;
849
850 if (audit_arge == 0)
851 return;
852
853 ar = currecord();
854 if (ar == NULL)
855 return;
856
857 ar->k_ar.ar_arg_envv = malloc(length, M_AUDITTEXT, M_WAITOK);
858 bcopy(envv, ar->k_ar.ar_arg_envv, length);
859 ar->k_ar.ar_arg_envc = envc;
860 ARG_SET_VALID(ar, ARG_ENVV);
861 }
862
863 void
864 audit_arg_rights(cap_rights_t *rightsp)
865 {
866 struct kaudit_record *ar;
867
868 ar = currecord();
869 if (ar == NULL)
870 return;
871
872 ar->k_ar.ar_arg_rights = *rightsp;
873 ARG_SET_VALID(ar, ARG_RIGHTS);
874 }
875
876 void
877 audit_arg_fcntl_rights(uint32_t fcntlrights)
878 {
879 struct kaudit_record *ar;
880
881 ar = currecord();
882 if (ar == NULL)
883 return;
884
885 ar->k_ar.ar_arg_fcntl_rights = fcntlrights;
886 ARG_SET_VALID(ar, ARG_FCNTL_RIGHTS);
887 }
888
889 /*
890 * The close() system call uses it's own audit call to capture the path/vnode
891 * information because those pieces are not easily obtained within the system
892 * call itself.
893 */
894 void
895 audit_sysclose(struct thread *td, int fd)
896 {
897 struct kaudit_record *ar;
898 struct vnode *vp;
899 struct file *fp;
900
901 KASSERT(td != NULL, ("audit_sysclose: td == NULL"));
902
903 ar = currecord();
904 if (ar == NULL)
905 return;
906
907 audit_arg_fd(fd);
908
909 if (getvnode(td->td_proc->p_fd, fd, 0, &fp) != 0)
910 return;
911
912 vp = fp->f_vnode;
913 vn_lock(vp, LK_SHARED | LK_RETRY);
914 audit_arg_vnode1(vp);
915 VOP_UNLOCK(vp, 0);
916 fdrop(fp, td);
917 }
Cache object: 74abda5a0b034ff40e7f3d93902dcc84
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