xref: /freebsd/sys/security/audit/audit_bsm.c (revision 3d11b6c8f01e1fca5936a11d6996448467851a94)
1 /*
2  * Copyright (c) 1999-2005 Apple Computer, 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 Computer, 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  * $FreeBSD$
30  */
31 
32 #include <sys/param.h>
33 #include <sys/vnode.h>
34 #include <sys/ipc.h>
35 #include <sys/lock.h>
36 #include <sys/malloc.h>
37 #include <sys/mutex.h>
38 #include <sys/socket.h>
39 #include <sys/fcntl.h>
40 #include <sys/user.h>
41 #include <sys/systm.h>
42 
43 #include <bsm/audit.h>
44 #include <bsm/audit_internal.h>
45 #include <bsm/audit_record.h>
46 #include <bsm/audit_kevents.h>
47 
48 #include <security/audit/audit.h>
49 #include <security/audit/audit_private.h>
50 
51 #include <netinet/in_systm.h>
52 #include <netinet/in.h>
53 #include <netinet/ip.h>
54 
55 MALLOC_DEFINE(M_AUDITBSM, "audit_bsm", "Audit BSM data");
56 
57 /*
58  * Forward declares.
59  */
60 static void	audit_sys_auditon(struct audit_record *ar,
61 		    struct au_record *rec);
62 
63 /*
64  * Initialize the BSM auditing subsystem.
65  */
66 void
67 kau_init(void)
68 {
69 
70 	printf("BSM auditing present\n");
71 	au_evclassmap_init();
72 }
73 
74 /*
75  * This call reserves memory for the audit record.  Memory must be guaranteed
76  * before any auditable event can be generated.  The au_record structure
77  * maintains a reference to the memory allocated above and also the list of
78  * tokens associated with this record
79  */
80 static struct au_record *
81 kau_open(void)
82 {
83 	struct au_record *rec;
84 
85 	rec = malloc(sizeof(*rec), M_AUDITBSM, M_WAITOK);
86 	rec->data = malloc(MAX_AUDIT_RECORD_SIZE * sizeof(u_char),
87 	    M_AUDITBSM, M_WAITOK | M_ZERO);
88 	TAILQ_INIT(&rec->token_q);
89 	rec->len = 0;
90 	rec->used = 1;
91 
92 	return (rec);
93 }
94 
95 /*
96  * Store the token with the record descriptor.
97  */
98 static void
99 kau_write(struct au_record *rec, struct au_token *tok)
100 {
101 
102 	KASSERT(tok != NULL, ("kau_write: tok == NULL"));
103 
104 	TAILQ_INSERT_TAIL(&rec->token_q, tok, tokens);
105 	rec->len += tok->len;
106 }
107 
108 /*
109  * Close out the audit record by adding the header token, identifying any
110  * missing tokens.  Write out the tokens to the record memory.
111  */
112 static void
113 kau_close(struct au_record *rec, struct timespec *ctime, short event)
114 {
115 	u_char *dptr;
116 	size_t tot_rec_size;
117 	token_t *cur, *hdr, *trail;
118 	struct timeval tm;
119 
120 	tot_rec_size = rec->len + BSM_HEADER_SIZE + BSM_TRAILER_SIZE;
121 	if (tot_rec_size <= MAX_AUDIT_RECORD_SIZE) {
122 		/* Create the header token */
123 		tm.tv_usec = ctime->tv_nsec / 1000;
124 		tm.tv_sec = ctime->tv_sec;
125 		hdr = au_to_header32(tot_rec_size, event, 0, tm);
126 		TAILQ_INSERT_HEAD(&rec->token_q, hdr, tokens);
127 
128 		trail = au_to_trailer(tot_rec_size);
129 		TAILQ_INSERT_TAIL(&rec->token_q, trail, tokens);
130 
131 		/* Serialize token data to the record. */
132 		rec->len = tot_rec_size;
133 		dptr = rec->data;
134 		TAILQ_FOREACH(cur, &rec->token_q, tokens) {
135 			memcpy(dptr, cur->t_data, cur->len);
136 			dptr += cur->len;
137 		}
138 	}
139 }
140 
141 /*
142  * Free a BSM audit record by releasing all the tokens and clearing the audit
143  * record information.
144  */
145 void
146 kau_free(struct au_record *rec)
147 {
148 	struct au_token *tok;
149 
150 	/* Free the token list. */
151 	while ((tok = TAILQ_FIRST(&rec->token_q))) {
152 		TAILQ_REMOVE(&rec->token_q, tok, tokens);
153 		free(tok->t_data, M_AUDITBSM);
154 		free(tok, M_AUDITBSM);
155 	}
156 
157 	rec->used = 0;
158 	rec->len = 0;
159 	free(rec->data, M_AUDITBSM);
160 	free(rec, M_AUDITBSM);
161 }
162 
163 /*
164  * XXX May want turn some (or all) of these macros into functions in order
165  * to reduce the generated code sized.
166  *
167  * XXXAUDIT: These macros assume that 'kar', 'ar', 'rec', and 'tok' in the
168  * caller are OK with this.
169  */
170 #define UPATH1_TOKENS do {						\
171 	if (ARG_IS_VALID(kar, ARG_UPATH1)) {				\
172 		tok = au_to_path(ar->ar_arg_upath1);			\
173 		kau_write(rec, tok);					\
174 	}								\
175 } while (0)
176 
177 #define UPATH2_TOKENS do {						\
178 	if (ARG_IS_VALID(kar, ARG_UPATH2)) {				\
179 		tok = au_to_path(ar->ar_arg_upath2);			\
180 		kau_write(rec, tok);					\
181 	}								\
182 } while (0)
183 
184 #define VNODE1_TOKENS do {						\
185 	if (ARG_IS_VALID(kar, ARG_VNODE1)) {  				\
186 		tok = au_to_attr32(&ar->ar_arg_vnode1);			\
187 		kau_write(rec, tok);					\
188 	}								\
189 } while (0)
190 
191 #define UPATH1_VNODE1_TOKENS do {					\
192 	if (ARG_IS_VALID(kar, ARG_UPATH1)) {  				\
193 		UPATH1_TOKENS;						\
194 	}								\
195 	if (ARG_IS_VALID(kar, ARG_VNODE1)) {  				\
196 		tok = au_to_attr32(&ar->ar_arg_vnode1);			\
197 		kau_write(rec, tok);					\
198 	}								\
199 } while (0)
200 
201 #define VNODE2_TOKENS do {						\
202 	if (ARG_IS_VALID(kar, ARG_VNODE2)) {  				\
203 		tok = au_to_attr32(&ar->ar_arg_vnode2);			\
204 		kau_write(rec, tok);					\
205 	}								\
206 } while (0)
207 
208 #define FD_VNODE1_TOKENS	do {					\
209 	if (ARG_IS_VALID(kar, ARG_VNODE1)) {				\
210 		if (ARG_IS_VALID(kar, ARG_FD)) {			\
211 			tok = au_to_arg32(1, "fd", ar->ar_arg_fd);	\
212 			kau_write(rec, tok);				\
213 		}							\
214 		tok = au_to_attr32(&ar->ar_arg_vnode1);			\
215 		kau_write(rec, tok);					\
216 	} else {							\
217 		if (ARG_IS_VALID(kar, ARG_FD)) {			\
218 			tok = au_to_arg32(1, "non-file: fd",		\
219 			    ar->ar_arg_fd);				\
220 			kau_write(rec, tok);				\
221 		}							\
222 	}								\
223 } while (0)
224 
225 #define PROCESS_PID_TOKENS(argn) do {					\
226 	if (ARG_IS_VALID(kar, ARG_PID)) {				\
227 		if ((ar->ar_arg_pid > 0) /* Kill a single process */	\
228 		    && (ARG_IS_VALID(kar, ARG_PROCESS))) {		\
229 			tok = au_to_process(ar->ar_arg_auid,		\
230 			    ar->ar_arg_euid, ar->ar_arg_egid,		\
231 			    ar->ar_arg_ruid, ar->ar_arg_rgid,		\
232 			    ar->ar_arg_pid, ar->ar_arg_asid,		\
233 			    &ar->ar_arg_termid);			\
234 			kau_write(rec, tok);				\
235 		} else {						\
236 			tok = au_to_arg32(argn, "process",		\
237 			    ar->ar_arg_pid);				\
238 			kau_write(rec, tok);				\
239 		}							\
240 	}								\
241 } while (0)								\
242 
243 /*
244  * Implement auditing for the auditon() system call. The audit tokens that
245  * are generated depend on the command that was sent into the auditon()
246  * system call.
247  */
248 static void
249 audit_sys_auditon(struct audit_record *ar, struct au_record *rec)
250 {
251 	struct au_token *tok;
252 
253 	switch (ar->ar_arg_cmd) {
254 	case A_SETPOLICY:
255 		if (sizeof(ar->ar_arg_auditon.au_flags) > 4)
256 			tok = au_to_arg64(1, "policy",
257 			    ar->ar_arg_auditon.au_flags);
258 		else
259 			tok = au_to_arg32(1, "policy",
260 			    ar->ar_arg_auditon.au_flags);
261 		kau_write(rec, tok);
262 		break;
263 
264 	case A_SETKMASK:
265 		tok = au_to_arg32(2, "setkmask:as_success",
266 		    ar->ar_arg_auditon.au_mask.am_success);
267 		kau_write(rec, tok);
268 		tok = au_to_arg32(2, "setkmask:as_failure",
269 		    ar->ar_arg_auditon.au_mask.am_failure);
270 		kau_write(rec, tok);
271 		break;
272 
273 	case A_SETQCTRL:
274 		tok = au_to_arg32(3, "setqctrl:aq_hiwater",
275 		    ar->ar_arg_auditon.au_qctrl.aq_hiwater);
276 		kau_write(rec, tok);
277 		tok = au_to_arg32(3, "setqctrl:aq_lowater",
278 		    ar->ar_arg_auditon.au_qctrl.aq_lowater);
279 		kau_write(rec, tok);
280 		tok = au_to_arg32(3, "setqctrl:aq_bufsz",
281 		    ar->ar_arg_auditon.au_qctrl.aq_bufsz);
282 		kau_write(rec, tok);
283 		tok = au_to_arg32(3, "setqctrl:aq_delay",
284 		    ar->ar_arg_auditon.au_qctrl.aq_delay);
285 		kau_write(rec, tok);
286 		tok = au_to_arg32(3, "setqctrl:aq_minfree",
287 		    ar->ar_arg_auditon.au_qctrl.aq_minfree);
288 		kau_write(rec, tok);
289 		break;
290 
291 	case A_SETUMASK:
292 		tok = au_to_arg32(3, "setumask:as_success",
293 		    ar->ar_arg_auditon.au_auinfo.ai_mask.am_success);
294 		kau_write(rec, tok);
295 		tok = au_to_arg32(3, "setumask:as_failure",
296 		    ar->ar_arg_auditon.au_auinfo.ai_mask.am_failure);
297 		kau_write(rec, tok);
298 		break;
299 
300 	case A_SETSMASK:
301 		tok = au_to_arg32(3, "setsmask:as_success",
302 		    ar->ar_arg_auditon.au_auinfo.ai_mask.am_success);
303 		kau_write(rec, tok);
304 		tok = au_to_arg32(3, "setsmask:as_failure",
305 		    ar->ar_arg_auditon.au_auinfo.ai_mask.am_failure);
306 		kau_write(rec, tok);
307 		break;
308 
309 	case A_SETCOND:
310 		if (sizeof(ar->ar_arg_auditon.au_cond) > 4)
311 			tok = au_to_arg64(3, "setcond",
312 			    ar->ar_arg_auditon.au_cond);
313 		else
314 			tok = au_to_arg32(3, "setcond",
315 			    ar->ar_arg_auditon.au_cond);
316 		kau_write(rec, tok);
317 		break;
318 
319 	case A_SETCLASS:
320 		tok = au_to_arg32(2, "setclass:ec_event",
321 		    ar->ar_arg_auditon.au_evclass.ec_number);
322 		kau_write(rec, tok);
323 		tok = au_to_arg32(3, "setclass:ec_class",
324 		    ar->ar_arg_auditon.au_evclass.ec_class);
325 		kau_write(rec, tok);
326 		break;
327 
328 	case A_SETPMASK:
329 		tok = au_to_arg32(2, "setpmask:as_success",
330 		    ar->ar_arg_auditon.au_aupinfo.ap_mask.am_success);
331 		kau_write(rec, tok);
332 		tok = au_to_arg32(2, "setpmask:as_failure",
333 		    ar->ar_arg_auditon.au_aupinfo.ap_mask.am_failure);
334 		kau_write(rec, tok);
335 		break;
336 
337 	case A_SETFSIZE:
338 		tok = au_to_arg32(2, "setfsize:filesize",
339 		    ar->ar_arg_auditon.au_fstat.af_filesz);
340 		kau_write(rec, tok);
341 		break;
342 
343 	default:
344 		break;
345 	}
346 }
347 
348 /*
349  * Convert an internal kernel audit record to a BSM record and return a
350  * success/failure indicator. The BSM record is passed as an out parameter to
351  * this function.
352  *
353  * Return conditions:
354  *   BSM_SUCCESS: The BSM record is valid
355  *   BSM_FAILURE: Failure; the BSM record is NULL.
356  *   BSM_NOAUDIT: The event is not auditable for BSM; the BSM record is NULL.
357  */
358 int
359 kaudit_to_bsm(struct kaudit_record *kar, struct au_record **pau)
360 {
361 	struct au_token *tok, *subj_tok;
362 	struct au_record *rec;
363 	au_tid_t tid;
364 	struct audit_record *ar;
365 	int ctr;
366 
367 	KASSERT(kar != NULL, ("kaudit_to_bsm: kar == NULL"));
368 
369 	*pau = NULL;
370 	ar = &kar->k_ar;
371 	rec = kau_open();
372 
373 	/* Create the subject token */
374 	tid.port = ar->ar_subj_term.port;
375 	tid.machine = ar->ar_subj_term.machine;
376 	subj_tok = au_to_subject32(ar->ar_subj_auid,  /* audit ID */
377 		ar->ar_subj_cred.cr_uid, /* eff uid */
378 		ar->ar_subj_egid,	/* eff group id */
379 		ar->ar_subj_ruid, 	/* real uid */
380 		ar->ar_subj_rgid, 	/* real group id */
381 		ar->ar_subj_pid,	/* process id */
382 		ar->ar_subj_asid,	/* session ID */
383 		&tid);
384 
385 	/*
386 	 * The logic inside each case fills in the tokens required for the
387 	 * event, except for the header, trailer, and return tokens.  The
388 	 * header and trailer tokens are added by the kau_close() function.
389 	 * The return token is added outside of the switch statement.
390 	 */
391 	switch(ar->ar_event) {
392 	case AUE_ACCEPT:
393 	case AUE_BIND:
394 	case AUE_CONNECT:
395 	case AUE_RECVFROM:
396 	case AUE_RECVMSG:
397 	case AUE_SENDMSG:
398 	case AUE_SENDTO:
399 		/*
400 		 * Socket-related events.
401 		 */
402 		if (ARG_IS_VALID(kar, ARG_FD)) {
403 			tok = au_to_arg32(1, "fd", ar->ar_arg_fd);
404 			kau_write(rec, tok);
405 		}
406 		if (ARG_IS_VALID(kar, ARG_SADDRINET)) {
407 			tok = au_to_sock_inet((struct sockaddr_in *)
408 			    &ar->ar_arg_sockaddr);
409 			kau_write(rec, tok);
410 		}
411 		if (ARG_IS_VALID(kar, ARG_SADDRUNIX)) {
412 			tok = au_to_sock_unix((struct sockaddr_un *)
413 			    &ar->ar_arg_sockaddr);
414 			kau_write(rec, tok);
415 			UPATH1_TOKENS;
416 		}
417 		/* XXX Need to handle ARG_SADDRINET6 */
418 		break;
419 
420 	case AUE_SOCKET:
421 	case AUE_SOCKETPAIR:
422 		if (ARG_IS_VALID(kar, ARG_SOCKINFO)) {
423 			tok = au_to_arg32(1,"domain",
424 			    ar->ar_arg_sockinfo.so_domain);
425 			kau_write(rec, tok);
426 			tok = au_to_arg32(2,"type",
427 			    ar->ar_arg_sockinfo.so_type);
428 			kau_write(rec, tok);
429 			tok = au_to_arg32(3,"protocol",
430 			    ar->ar_arg_sockinfo.so_protocol);
431 			kau_write(rec, tok);
432 		}
433 		break;
434 
435 	case AUE_SETSOCKOPT:
436 	case AUE_SHUTDOWN:
437 		if (ARG_IS_VALID(kar, ARG_FD)) {
438 			tok = au_to_arg32(1, "fd", ar->ar_arg_fd);
439 			kau_write(rec, tok);
440 		}
441 		break;
442 
443 	case AUE_ACCT:
444 		if (ARG_IS_VALID(kar, ARG_UPATH1)) {
445 			UPATH1_VNODE1_TOKENS;
446 		} else {
447 			tok = au_to_arg32(1, "accounting off", 0);
448 			kau_write(rec, tok);
449 		}
450 		break;
451 
452 	case AUE_SETAUID:
453 		if (ARG_IS_VALID(kar, ARG_AUID)) {
454 			tok = au_to_arg32(2, "setauid", ar->ar_arg_auid);
455 			kau_write(rec, tok);
456 		}
457 		break;
458 
459 	case AUE_SETAUDIT:
460 		if (ARG_IS_VALID(kar, ARG_AUID)) {
461 			tok = au_to_arg32(1, "setaudit:auid",
462 			    ar->ar_arg_auid);
463 			kau_write(rec, tok);
464 			tok = au_to_arg32(1, "setaudit:port",
465 			    ar->ar_arg_termid.port);
466 			kau_write(rec, tok);
467 			tok = au_to_arg32(1, "setaudit:machine",
468 			    ar->ar_arg_termid.machine);
469 			kau_write(rec, tok);
470 			tok = au_to_arg32(1, "setaudit:as_success",
471 			    ar->ar_arg_amask.am_success);
472 			kau_write(rec, tok);
473 			tok = au_to_arg32(1, "setaudit:as_failure",
474 			    ar->ar_arg_amask.am_failure);
475 			kau_write(rec, tok);
476 			tok = au_to_arg32(1, "setaudit:asid",
477 			    ar->ar_arg_asid);
478 			kau_write(rec, tok);
479 		}
480 		break;
481 
482 	case AUE_SETAUDIT_ADDR:
483 		break;		/* XXX need to add arguments */
484 
485 	case AUE_AUDITON:
486 		/*
487 		 * For AUDITON commands without own event, audit the cmd.
488 		 */
489 		if (ARG_IS_VALID(kar, ARG_CMD)) {
490 			tok = au_to_arg32(1, "cmd", ar->ar_arg_cmd);
491 			kau_write(rec, tok);
492 		}
493 		/* fall thru */
494 
495 	case AUE_AUDITON_GETCAR:
496 	case AUE_AUDITON_GETCLASS:
497 	case AUE_AUDITON_GETCOND:
498 	case AUE_AUDITON_GETCWD:
499 	case AUE_AUDITON_GETKMASK:
500 	case AUE_AUDITON_GETSTAT:
501 	case AUE_AUDITON_GPOLICY:
502 	case AUE_AUDITON_GQCTRL:
503 	case AUE_AUDITON_SETCLASS:
504 	case AUE_AUDITON_SETCOND:
505 	case AUE_AUDITON_SETKMASK:
506 	case AUE_AUDITON_SETSMASK:
507 	case AUE_AUDITON_SETSTAT:
508 	case AUE_AUDITON_SETUMASK:
509 	case AUE_AUDITON_SPOLICY:
510 	case AUE_AUDITON_SQCTRL:
511 		if (ARG_IS_VALID(kar, ARG_AUDITON))
512 			audit_sys_auditon(ar, rec);
513 		break;
514 
515 	case AUE_AUDITCTL:
516 		UPATH1_VNODE1_TOKENS;
517 		break;
518 
519 	case AUE_EXIT:
520 		if (ARG_IS_VALID(kar, ARG_EXIT)) {
521 			tok = au_to_exit(ar->ar_arg_exitretval,
522 			    ar->ar_arg_exitstatus);
523 			kau_write(rec, tok);
524 		}
525 		break;
526 
527 	case AUE_ADJTIME:
528 	case AUE_AUDIT:
529 	case AUE_GETAUDIT:
530 	case AUE_GETAUDIT_ADDR:
531 	case AUE_GETAUID:
532 	case AUE_GETFSSTAT:
533 	case AUE_PIPE:
534 	case AUE_SETPGRP:
535 	case AUE_SETRLIMIT:
536 	case AUE_SETSID:
537 	case AUE_SETTIMEOFDAY:
538 	case AUE_NEWSYSTEMSHREG:
539 		/*
540 		 * Header, subject, and return tokens added at end.
541 		 */
542 		break;
543 
544 	case AUE_ACCESS:
545 	case AUE_CHDIR:
546 	case AUE_CHROOT:
547 	case AUE_EACCESS:
548 	case AUE_EXECVE:
549 	case AUE_GETATTRLIST:
550 	case AUE_NFS_GETFH:
551 	case AUE_LSTAT:
552 	case AUE_MKFIFO:
553 	case AUE_PATHCONF:
554 	case AUE_READLINK:
555 	case AUE_REVOKE:
556 	case AUE_RMDIR:
557 	case AUE_SEARCHFS:
558 	case AUE_SETATTRLIST:
559 	case AUE_STAT:
560 	case AUE_STATFS:
561 	case AUE_TRUNCATE:
562 	case AUE_UNDELETE:
563 	case AUE_UNLINK:
564 	case AUE_UTIMES:
565 		UPATH1_VNODE1_TOKENS;
566 		break;
567 
568 	case AUE_CHFLAGS:
569 	case AUE_LCHFLAGS:
570 		if (ARG_IS_VALID(kar, ARG_FFLAGS)) {
571 			tok = au_to_arg32(2, "flags", ar->ar_arg_fflags);
572 			kau_write(rec, tok);
573 		}
574 		UPATH1_VNODE1_TOKENS;
575 		break;
576 
577 	case AUE_CHMOD:
578 	case AUE_LCHMOD:
579 		if (ARG_IS_VALID(kar, ARG_MODE)) {
580 			tok = au_to_arg32(2, "new file mode",
581 			    ar->ar_arg_mode);
582 			kau_write(rec, tok);
583 		}
584 		UPATH1_VNODE1_TOKENS;
585 		break;
586 
587 	case AUE_CHOWN:
588 	case AUE_LCHOWN:
589 		if (ARG_IS_VALID(kar, ARG_UID)) {
590 			tok = au_to_arg32(2, "new file uid", ar->ar_arg_uid);
591 			kau_write(rec, tok);
592 		}
593 		if (ARG_IS_VALID(kar, ARG_GID)) {
594 			tok = au_to_arg32(3, "new file gid", ar->ar_arg_gid);
595 			kau_write(rec, tok);
596 		}
597 		UPATH1_VNODE1_TOKENS;
598 		break;
599 
600 	case AUE_EXCHANGEDATA:
601 		UPATH1_VNODE1_TOKENS;
602 		UPATH2_TOKENS;
603 		break;
604 
605 	case AUE_CLOSE:
606 		if (ARG_IS_VALID(kar, ARG_FD)) {
607 			tok = au_to_arg32(2, "fd", ar->ar_arg_fd);
608 			kau_write(rec, tok);
609 		}
610 		UPATH1_VNODE1_TOKENS;
611 		break;
612 
613 	case AUE_FCHMOD:
614 		if (ARG_IS_VALID(kar, ARG_MODE)) {
615 			tok = au_to_arg32(2, "new file mode",
616 			    ar->ar_arg_mode);
617 			kau_write(rec, tok);
618 		}
619 		FD_VNODE1_TOKENS;
620 		break;
621 
622 	case AUE_FCHDIR:
623 	case AUE_FPATHCONF:
624 	case AUE_FSTAT:		/* XXX Need to handle sockets and shm */
625 	case AUE_FSTATFS:
626 	case AUE_FSYNC:
627 	case AUE_FTRUNCATE:
628 	case AUE_FUTIMES:
629 	case AUE_GETDIRENTRIES:
630 	case AUE_GETDIRENTRIESATTR:
631 		FD_VNODE1_TOKENS;
632 		break;
633 
634 	case AUE_FCHOWN:
635 		if (ARG_IS_VALID(kar, ARG_UID)) {
636 			tok = au_to_arg32(2, "new file uid", ar->ar_arg_uid);
637 			kau_write(rec, tok);
638 		}
639 		if (ARG_IS_VALID(kar, ARG_GID)) {
640 			tok = au_to_arg32(3, "new file gid", ar->ar_arg_gid);
641 			kau_write(rec, tok);
642 		}
643 		FD_VNODE1_TOKENS;
644 		break;
645 
646 	case AUE_FCNTL:
647 		if (ar->ar_arg_cmd == F_GETLK || ar->ar_arg_cmd == F_SETLK ||
648 			ar->ar_arg_cmd == F_SETLKW) {
649 			if (ARG_IS_VALID(kar, ARG_CMD)) {
650 				tok = au_to_arg32(2, "cmd", ar->ar_arg_cmd);
651 				kau_write(rec, tok);
652 			}
653 			FD_VNODE1_TOKENS;
654 		}
655 		break;
656 
657 	case AUE_FCHFLAGS:
658 		if (ARG_IS_VALID(kar, ARG_FFLAGS)) {
659 			tok = au_to_arg32(2, "flags", ar->ar_arg_fflags);
660 			kau_write(rec, tok);
661 		}
662 		FD_VNODE1_TOKENS;
663 		break;
664 
665 	case AUE_FLOCK:
666 		if (ARG_IS_VALID(kar, ARG_CMD)) {
667 			tok = au_to_arg32(2, "operation", ar->ar_arg_cmd);
668 			kau_write(rec, tok);
669 		}
670 		FD_VNODE1_TOKENS;
671 		break;
672 
673 	case AUE_RFORK:
674 		if (ARG_IS_VALID(kar, ARG_FFLAGS)) {
675 			tok = au_to_arg32(1, "flags", ar->ar_arg_fflags);
676 			kau_write(rec, tok);
677 		}
678 		/* fall through */
679 	case AUE_FORK:
680 	case AUE_VFORK:
681 		if (ARG_IS_VALID(kar, ARG_PID)) {
682 			tok = au_to_arg32(0, "child PID", ar->ar_arg_pid);
683 			kau_write(rec, tok);
684 		}
685 		break;
686 
687 	case AUE_IOCTL:
688 		if (ARG_IS_VALID(kar, ARG_CMD)) {
689 			tok = au_to_arg32(2, "cmd", ar->ar_arg_cmd);
690 			kau_write(rec, tok);
691 		}
692 		if (ARG_IS_VALID(kar, ARG_ADDR)) {
693 			tok = au_to_arg32(1, "arg",
694 			    (u_int32_t)(uintptr_t)ar->ar_arg_addr);
695 			kau_write(rec, tok);
696 		}
697 		if (ARG_IS_VALID(kar, ARG_VNODE1))
698 			FD_VNODE1_TOKENS;
699 		else {
700 			if (ARG_IS_VALID(kar, ARG_SOCKINFO)) {
701 				tok = kau_to_socket(&ar->ar_arg_sockinfo);
702 				kau_write(rec, tok);
703 			} else {
704 				if (ARG_IS_VALID(kar, ARG_FD)) {
705 					tok = au_to_arg32(1, "fd",
706 					    ar->ar_arg_fd);
707 			    		kau_write(rec, tok);
708 				}
709 			}
710 		}
711 		break;
712 
713 	case AUE_KILL:
714 		if (ARG_IS_VALID(kar, ARG_SIGNUM)) {
715 			tok = au_to_arg32(2, "signal", ar->ar_arg_signum);
716 			kau_write(rec, tok);
717 		}
718 		PROCESS_PID_TOKENS(1);
719 		break;
720 
721 	case AUE_KTRACE:
722 		if (ARG_IS_VALID(kar, ARG_CMD)) {
723 			tok = au_to_arg32(2, "ops", ar->ar_arg_cmd);
724 			kau_write(rec, tok);
725 		}
726 		if (ARG_IS_VALID(kar, ARG_VALUE)) {
727 			tok = au_to_arg32(3, "trpoints", ar->ar_arg_value);
728 			kau_write(rec, tok);
729 		}
730 		PROCESS_PID_TOKENS(4);
731 		UPATH1_VNODE1_TOKENS;
732 		break;
733 
734 	case AUE_LINK:
735 	case AUE_RENAME:
736 		UPATH1_VNODE1_TOKENS;
737 		UPATH2_TOKENS;
738 		break;
739 
740 	case AUE_LOADSHFILE:
741 		if (ARG_IS_VALID(kar, ARG_ADDR)) {
742 			tok = au_to_arg32(4, "base addr",
743 			    (u_int32_t)(uintptr_t)ar->ar_arg_addr);
744 			kau_write(rec, tok);
745 		}
746 		UPATH1_VNODE1_TOKENS;
747 		break;
748 
749 	case AUE_MKDIR:
750 		if (ARG_IS_VALID(kar, ARG_MODE)) {
751 			tok = au_to_arg32(2, "mode", ar->ar_arg_mode);
752 			kau_write(rec, tok);
753 		}
754 		UPATH1_VNODE1_TOKENS;
755 		break;
756 
757 	case AUE_MKNOD:
758 		if (ARG_IS_VALID(kar, ARG_MODE)) {
759 			tok = au_to_arg32(2, "mode", ar->ar_arg_mode);
760 			kau_write(rec, tok);
761 		}
762 		if (ARG_IS_VALID(kar, ARG_DEV)) {
763 			tok = au_to_arg32(3, "dev", ar->ar_arg_dev);
764 			kau_write(rec, tok);
765 		}
766 		UPATH1_VNODE1_TOKENS;
767 		break;
768 
769 	case AUE_MMAP:
770 	case AUE_MUNMAP:
771 	case AUE_MPROTECT:
772 	case AUE_MLOCK:
773 	case AUE_MUNLOCK:
774 	case AUE_MINHERIT:
775 		if (ARG_IS_VALID(kar, ARG_ADDR)) {
776 			tok = au_to_arg32(1, "addr",
777 			    (u_int32_t)(uintptr_t)ar->ar_arg_addr);
778 			kau_write(rec, tok);
779 		}
780 		if (ARG_IS_VALID(kar, ARG_LEN)) {
781 			tok = au_to_arg32(2, "len", ar->ar_arg_len);
782 			kau_write(rec, tok);
783 		}
784 		if (ar->ar_event == AUE_MMAP)
785 			FD_VNODE1_TOKENS;
786 		if (ar->ar_event == AUE_MPROTECT) {
787 			if (ARG_IS_VALID(kar, ARG_VALUE)) {
788 				tok = au_to_arg32(3, "protection",
789 				    ar->ar_arg_value);
790 				kau_write(rec, tok);
791 			}
792 		}
793 		if (ar->ar_event == AUE_MINHERIT) {
794 			if (ARG_IS_VALID(kar, ARG_VALUE)) {
795 				tok = au_to_arg32(3, "inherit",
796 				    ar->ar_arg_value);
797 				kau_write(rec, tok);
798 			}
799 		}
800 		break;
801 
802 	case AUE_MOUNT:
803 		/* XXX Need to handle NFS mounts */
804 		if (ARG_IS_VALID(kar, ARG_FFLAGS)) {
805 			tok = au_to_arg32(3, "flags", ar->ar_arg_fflags);
806 			kau_write(rec, tok);
807 		}
808 		if (ARG_IS_VALID(kar, ARG_TEXT)) {
809 			tok = au_to_text(ar->ar_arg_text);
810 			kau_write(rec, tok);
811 		}
812 		/* fall through */
813 
814 	case AUE_UMOUNT:
815 		UPATH1_VNODE1_TOKENS;
816 		break;
817 
818 	case AUE_MSGCTL:
819 		ar->ar_event = msgctl_to_event(ar->ar_arg_svipc_cmd);
820 		/* Fall through */
821 
822 	case AUE_MSGRCV:
823 	case AUE_MSGSND:
824 		tok = au_to_arg32(1, "msg ID", ar->ar_arg_svipc_id);
825 		kau_write(rec, tok);
826 		if (ar->ar_errno != EINVAL) {
827 			tok = au_to_ipc(AT_IPC_MSG, ar->ar_arg_svipc_id);
828 			kau_write(rec, tok);
829 		}
830 		break;
831 
832 	case AUE_MSGGET:
833 		if (ar->ar_errno == 0) {
834 			if (ARG_IS_VALID(kar, ARG_SVIPC_ID)) {
835 				tok = au_to_ipc(AT_IPC_MSG,
836 				    ar->ar_arg_svipc_id);
837 				kau_write(rec, tok);
838 			}
839 		}
840 		break;
841 
842 	case AUE_RESETSHFILE:
843 		if (ARG_IS_VALID(kar, ARG_ADDR)) {
844 			tok = au_to_arg32(1, "base addr",
845 			    (u_int32_t)(uintptr_t)ar->ar_arg_addr);
846 			kau_write(rec, tok);
847 		}
848 		break;
849 
850 	case AUE_OPEN_RC:
851 	case AUE_OPEN_RTC:
852 	case AUE_OPEN_RWC:
853 	case AUE_OPEN_RWTC:
854 	case AUE_OPEN_WC:
855 	case AUE_OPEN_WTC:
856 	/* case AUE_O_CREAT: */		/* AUE_O_CREAT == AUE_OPEN_RWTC */
857 		if (ARG_IS_VALID(kar, ARG_MODE)) {
858 			tok = au_to_arg32(3, "mode", ar->ar_arg_mode);
859 			kau_write(rec, tok);
860 		}
861 		/* fall through */
862 
863 	case AUE_OPEN_R:
864 	case AUE_OPEN_RT:
865 	case AUE_OPEN_RW:
866 	case AUE_OPEN_RWT:
867 	case AUE_OPEN_W:
868 	case AUE_OPEN_WT:
869 		if (ARG_IS_VALID(kar, ARG_FFLAGS)) {
870 			tok = au_to_arg32(2, "flags", ar->ar_arg_fflags);
871 			kau_write(rec, tok);
872 		}
873 		UPATH1_VNODE1_TOKENS;
874 		break;
875 
876 	case AUE_PTRACE:
877 		if (ARG_IS_VALID(kar, ARG_CMD)) {
878 			tok = au_to_arg32(1, "request", ar->ar_arg_cmd);
879 			kau_write(rec, tok);
880 		}
881 		if (ARG_IS_VALID(kar, ARG_ADDR)) {
882 			tok = au_to_arg32(3, "addr",
883 			    (u_int32_t)(uintptr_t)ar->ar_arg_addr);
884 			kau_write(rec, tok);
885 		}
886 		if (ARG_IS_VALID(kar, ARG_VALUE)) {
887 			tok = au_to_arg32(4, "data", ar->ar_arg_value);
888 			kau_write(rec, tok);
889 		}
890 		PROCESS_PID_TOKENS(2);
891 		break;
892 
893 	case AUE_QUOTACTL:
894 		if (ARG_IS_VALID(kar, ARG_CMD)) {
895 			tok = au_to_arg32(2, "command", ar->ar_arg_cmd);
896 			kau_write(rec, tok);
897 		}
898 		if (ARG_IS_VALID(kar, ARG_UID)) {
899 			tok = au_to_arg32(3, "uid", ar->ar_arg_uid);
900 			kau_write(rec, tok);
901 		}
902 		UPATH1_VNODE1_TOKENS;
903 		break;
904 
905 	case AUE_REBOOT:
906 		if (ARG_IS_VALID(kar, ARG_CMD)) {
907 			tok = au_to_arg32(1, "howto", ar->ar_arg_cmd);
908 			kau_write(rec, tok);
909 		}
910 		break;
911 
912 	case AUE_SEMCTL:
913 		ar->ar_event = semctl_to_event(ar->ar_arg_svipc_cmd);
914 		/* Fall through */
915 
916 	case AUE_SEMOP:
917 		if (ARG_IS_VALID(kar, ARG_SVIPC_ID)) {
918 			tok = au_to_arg32(1, "sem ID", ar->ar_arg_svipc_id);
919 			kau_write(rec, tok);
920 			if (ar->ar_errno != EINVAL) {
921 				tok = au_to_ipc(AT_IPC_SEM,
922 				    ar->ar_arg_svipc_id);
923 				kau_write(rec, tok);
924 			}
925 		}
926 		break;
927 
928 	case AUE_SEMGET:
929 		if (ar->ar_errno == 0) {
930 			if (ARG_IS_VALID(kar, ARG_SVIPC_ID)) {
931 				tok = au_to_ipc(AT_IPC_SEM,
932 				    ar->ar_arg_svipc_id);
933 				kau_write(rec, tok);
934 			}
935 		}
936 		break;
937 
938 	case AUE_SETEGID:
939 		if (ARG_IS_VALID(kar, ARG_EGID)) {
940 			tok = au_to_arg32(1, "gid", ar->ar_arg_egid);
941 			kau_write(rec, tok);
942 		}
943 		break;
944 
945 	case AUE_SETEUID:
946 		if (ARG_IS_VALID(kar, ARG_EUID)) {
947 			tok = au_to_arg32(1, "uid", ar->ar_arg_euid);
948 			kau_write(rec, tok);
949 		}
950 		break;
951 
952 	case AUE_SETREGID:
953 		if (ARG_IS_VALID(kar, ARG_RGID)) {
954 			tok = au_to_arg32(1, "rgid", ar->ar_arg_rgid);
955 			kau_write(rec, tok);
956 		}
957 		if (ARG_IS_VALID(kar, ARG_EGID)) {
958 			tok = au_to_arg32(2, "egid", ar->ar_arg_egid);
959 			kau_write(rec, tok);
960 		}
961 		break;
962 
963 	case AUE_SETREUID:
964 		if (ARG_IS_VALID(kar, ARG_RUID)) {
965 			tok = au_to_arg32(1, "ruid", ar->ar_arg_ruid);
966 			kau_write(rec, tok);
967 		}
968 		if (ARG_IS_VALID(kar, ARG_EUID)) {
969 			tok = au_to_arg32(2, "euid", ar->ar_arg_euid);
970 			kau_write(rec, tok);
971 		}
972 		break;
973 
974 	case AUE_SETRESGID:
975 		if (ARG_IS_VALID(kar, ARG_RGID)) {
976 			tok = au_to_arg32(1, "rgid", ar->ar_arg_rgid);
977 			kau_write(rec, tok);
978 		}
979 		if (ARG_IS_VALID(kar, ARG_EGID)) {
980 			tok = au_to_arg32(2, "egid", ar->ar_arg_egid);
981 			kau_write(rec, tok);
982 		}
983 		if (ARG_IS_VALID(kar, ARG_SGID)) {
984 			tok = au_to_arg32(3, "sgid", ar->ar_arg_sgid);
985 			kau_write(rec, tok);
986 		}
987 		break;
988 
989 	case AUE_SETRESUID:
990 		if (ARG_IS_VALID(kar, ARG_RUID)) {
991 			tok = au_to_arg32(1, "ruid", ar->ar_arg_ruid);
992 			kau_write(rec, tok);
993 		}
994 		if (ARG_IS_VALID(kar, ARG_EUID)) {
995 			tok = au_to_arg32(2, "euid", ar->ar_arg_euid);
996 			kau_write(rec, tok);
997 		}
998 		if (ARG_IS_VALID(kar, ARG_SUID)) {
999 			tok = au_to_arg32(3, "suid", ar->ar_arg_suid);
1000 			kau_write(rec, tok);
1001 		}
1002 		break;
1003 
1004 	case AUE_SETGID:
1005 		if (ARG_IS_VALID(kar, ARG_GID)) {
1006 			tok = au_to_arg32(1, "gid", ar->ar_arg_gid);
1007 			kau_write(rec, tok);
1008 		}
1009 		break;
1010 
1011 	case AUE_SETUID:
1012 		if (ARG_IS_VALID(kar, ARG_UID)) {
1013 			tok = au_to_arg32(1, "uid", ar->ar_arg_uid);
1014 			kau_write(rec, tok);
1015 		}
1016 		break;
1017 
1018 	case AUE_SETGROUPS:
1019 		if (ARG_IS_VALID(kar, ARG_GROUPSET)) {
1020 			for(ctr = 0; ctr < ar->ar_arg_groups.gidset_size; ctr++)
1021 			{
1022 				tok = au_to_arg32(1, "setgroups", 							ar->ar_arg_groups.gidset[ctr]);
1023 				kau_write(rec, tok);
1024 			}
1025 		}
1026 		break;
1027 
1028 	case AUE_SETLOGIN:
1029 		if (ARG_IS_VALID(kar, ARG_TEXT)) {
1030 			tok = au_to_text(ar->ar_arg_text);
1031 			kau_write(rec, tok);
1032 		}
1033 		break;
1034 
1035 	case AUE_SETPRIORITY:
1036 		if (ARG_IS_VALID(kar, ARG_CMD)) {
1037 			tok = au_to_arg32(1, "which", ar->ar_arg_cmd);
1038 			kau_write(rec, tok);
1039 		}
1040 		if (ARG_IS_VALID(kar, ARG_UID)) {
1041 			tok = au_to_arg32(2, "who", ar->ar_arg_uid);
1042 			kau_write(rec, tok);
1043 		}
1044 		if (ARG_IS_VALID(kar, ARG_VALUE)) {
1045 			tok = au_to_arg32(2, "priority", ar->ar_arg_value);
1046 			kau_write(rec, tok);
1047 		}
1048 		break;
1049 
1050 	case AUE_SETPRIVEXEC:
1051 		if (ARG_IS_VALID(kar, ARG_VALUE)) {
1052 			tok = au_to_arg32(1, "flag", ar->ar_arg_value);
1053 			kau_write(rec, tok);
1054 		}
1055 		break;
1056 
1057 	/* AUE_SHMAT, AUE_SHMCTL, AUE_SHMDT and AUE_SHMGET are SysV IPC */
1058 	case AUE_SHMAT:
1059 		if (ARG_IS_VALID(kar, ARG_SVIPC_ID)) {
1060 			tok = au_to_arg32(1, "shmid", ar->ar_arg_svipc_id);
1061 			kau_write(rec, tok);
1062 			/* XXXAUDIT: Does having the ipc token make sense? */
1063 			tok = au_to_ipc(AT_IPC_SHM, ar->ar_arg_svipc_id);
1064 			kau_write(rec, tok);
1065 		}
1066 		if (ARG_IS_VALID(kar, ARG_SVIPC_ADDR)) {
1067 			tok = au_to_arg32(2, "shmaddr",
1068 			    (int)(uintptr_t)ar->ar_arg_svipc_addr);
1069 			kau_write(rec, tok);
1070 		}
1071 		if (ARG_IS_VALID(kar, ARG_SVIPC_PERM)) {
1072 			tok = au_to_ipc_perm(&ar->ar_arg_svipc_perm);
1073 			kau_write(rec, tok);
1074 		}
1075 		break;
1076 
1077 	case AUE_SHMCTL:
1078 		if (ARG_IS_VALID(kar, ARG_SVIPC_ID)) {
1079 			tok = au_to_arg32(1, "shmid", ar->ar_arg_svipc_id);
1080 			kau_write(rec, tok);
1081 			/* XXXAUDIT: Does having the ipc token make sense? */
1082 			tok = au_to_ipc(AT_IPC_SHM, ar->ar_arg_svipc_id);
1083 			kau_write(rec, tok);
1084 		}
1085 		switch (ar->ar_arg_svipc_cmd) {
1086 		case IPC_STAT:
1087 			ar->ar_event = AUE_SHMCTL_STAT;
1088 			break;
1089 		case IPC_RMID:
1090 			ar->ar_event = AUE_SHMCTL_RMID;
1091 			break;
1092 		case IPC_SET:
1093 			ar->ar_event = AUE_SHMCTL_SET;
1094 			if (ARG_IS_VALID(kar, ARG_SVIPC_PERM)) {
1095 				tok = au_to_ipc_perm(&ar->ar_arg_svipc_perm);
1096 				kau_write(rec, tok);
1097 			}
1098 			break;
1099 		default:
1100 			break;	/* We will audit a bad command */
1101 		}
1102 		break;
1103 
1104 	case AUE_SHMDT:
1105 		if (ARG_IS_VALID(kar, ARG_SVIPC_ADDR)) {
1106 			tok = au_to_arg32(1, "shmaddr",
1107 			    (int)(uintptr_t)ar->ar_arg_svipc_addr);
1108 			kau_write(rec, tok);
1109 		}
1110 		break;
1111 
1112 	case AUE_SHMGET:
1113 		/* This is unusual; the return value is in an argument token */
1114 		if (ARG_IS_VALID(kar, ARG_SVIPC_ID)) {
1115 			tok = au_to_arg32(0, "shmid", ar->ar_arg_svipc_id);
1116 			kau_write(rec, tok);
1117 			tok = au_to_ipc(AT_IPC_SHM, ar->ar_arg_svipc_id);
1118 			kau_write(rec, tok);
1119 		}
1120 		if (ARG_IS_VALID(kar, ARG_SVIPC_PERM)) {
1121 			tok = au_to_ipc_perm(&ar->ar_arg_svipc_perm);
1122 			kau_write(rec, tok);
1123 		}
1124 		break;
1125 
1126 	/* AUE_SHMOPEN, AUE_SHMUNLINK, AUE_SEMOPEN, AUE_SEMCLOSE
1127 	 * and AUE_SEMUNLINK are Posix IPC */
1128 	case AUE_SHMOPEN:
1129 		if (ARG_IS_VALID(kar, ARG_SVIPC_ADDR)) {
1130 			tok = au_to_arg32(2, "flags", ar->ar_arg_fflags);
1131 			kau_write(rec, tok);
1132 		}
1133 		if (ARG_IS_VALID(kar, ARG_MODE)) {
1134 			tok = au_to_arg32(3, "mode", ar->ar_arg_mode);
1135 			kau_write(rec, tok);
1136 		}
1137 	case AUE_SHMUNLINK:
1138 		if (ARG_IS_VALID(kar, ARG_TEXT)) {
1139 			tok = au_to_text(ar->ar_arg_text);
1140 			kau_write(rec, tok);
1141 		}
1142 		if (ARG_IS_VALID(kar, ARG_POSIX_IPC_PERM)) {
1143 		/* Create an ipc_perm token */
1144 			struct ipc_perm perm;
1145 			perm.uid = ar->ar_arg_pipc_perm.pipc_uid;
1146 			perm.gid = ar->ar_arg_pipc_perm.pipc_gid;
1147 			perm.cuid = ar->ar_arg_pipc_perm.pipc_uid;
1148 			perm.cgid = ar->ar_arg_pipc_perm.pipc_gid;
1149 			perm.mode = ar->ar_arg_pipc_perm.pipc_mode;
1150 			perm.seq = 0;
1151 			perm.key = 0;
1152 			tok = au_to_ipc_perm(&perm);
1153 			kau_write(rec, tok);
1154 		}
1155 		break;
1156 
1157 	case AUE_SEMOPEN:
1158 		if (ARG_IS_VALID(kar, ARG_FFLAGS)) {
1159 			tok = au_to_arg32(2, "flags", ar->ar_arg_fflags);
1160 			kau_write(rec, tok);
1161 		}
1162 		if (ARG_IS_VALID(kar, ARG_MODE)) {
1163 			tok = au_to_arg32(3, "mode", ar->ar_arg_mode);
1164 			kau_write(rec, tok);
1165 		}
1166 		if (ARG_IS_VALID(kar, ARG_VALUE)) {
1167 			tok = au_to_arg32(4, "value", ar->ar_arg_value);
1168 			kau_write(rec, tok);
1169 		}
1170 		/* fall through */
1171 
1172 	case AUE_SEMUNLINK:
1173 		if (ARG_IS_VALID(kar, ARG_TEXT)) {
1174 			tok = au_to_text(ar->ar_arg_text);
1175 			kau_write(rec, tok);
1176 		}
1177 		if (ARG_IS_VALID(kar, ARG_POSIX_IPC_PERM)) {
1178 		/* Create an ipc_perm token */
1179 			struct ipc_perm perm;
1180 			perm.uid = ar->ar_arg_pipc_perm.pipc_uid;
1181 			perm.gid = ar->ar_arg_pipc_perm.pipc_gid;
1182 			perm.cuid = ar->ar_arg_pipc_perm.pipc_uid;
1183 			perm.cgid = ar->ar_arg_pipc_perm.pipc_gid;
1184 			perm.mode = ar->ar_arg_pipc_perm.pipc_mode;
1185 			perm.seq = 0;
1186 			perm.key = 0;
1187 			tok = au_to_ipc_perm(&perm);
1188 			kau_write(rec, tok);
1189 		}
1190 		break;
1191 
1192 	case AUE_SEMCLOSE:
1193 		if (ARG_IS_VALID(kar, ARG_FD)) {
1194 			tok = au_to_arg32(1, "sem", ar->ar_arg_fd);
1195 			kau_write(rec, tok);
1196 		}
1197 		break;
1198 
1199 	case AUE_SYMLINK:
1200 		if (ARG_IS_VALID(kar, ARG_TEXT)) {
1201 			tok = au_to_text(ar->ar_arg_text);
1202 			kau_write(rec, tok);
1203 		}
1204 		UPATH1_VNODE1_TOKENS;
1205 		break;
1206 
1207 	case AUE_SYSCTL:
1208 		if (ARG_IS_VALID(kar, ARG_CTLNAME | ARG_LEN)) {
1209 			for (ctr = 0; ctr < ar->ar_arg_len; ctr++) {
1210 				tok = au_to_arg32(1, "name",
1211 				    ar->ar_arg_ctlname[ctr]);
1212 				kau_write(rec, tok);
1213 			}
1214 		}
1215 		if (ARG_IS_VALID(kar, ARG_VALUE)) {
1216 			tok = au_to_arg32(5, "newval", ar->ar_arg_value);
1217 			kau_write(rec, tok);
1218 		}
1219 		if (ARG_IS_VALID(kar, ARG_TEXT)) {
1220 			tok = au_to_text(ar->ar_arg_text);
1221 			kau_write(rec, tok);
1222 		}
1223 		break;
1224 
1225 	case AUE_UMASK:
1226 		if (ARG_IS_VALID(kar, ARG_MASK)) {
1227 			tok = au_to_arg32(1, "new mask", ar->ar_arg_mask);
1228 			kau_write(rec, tok);
1229 		}
1230 		tok = au_to_arg32(0, "prev mask", ar->ar_retval);
1231 		kau_write(rec, tok);
1232 		break;
1233 
1234 	case AUE_WAIT4:
1235 		if (ARG_IS_VALID(kar, ARG_PID)) {
1236 			tok = au_to_arg32(0, "pid", ar->ar_arg_pid);
1237 			kau_write(rec, tok);
1238 		}
1239 		break;
1240 
1241 	default:
1242 		printf("BSM conversion requested for unknown event %d\n",
1243 		    ar->ar_event);
1244 		/* Write the subject token so it is properly freed here. */
1245 		kau_write(rec, subj_tok);
1246 		kau_free(rec);
1247 		return (BSM_NOAUDIT);
1248 	}
1249 
1250 	kau_write(rec, subj_tok);
1251 	tok = au_to_return32((char)ar->ar_errno, ar->ar_retval);
1252 	kau_write(rec, tok);  /* Every record gets a return token */
1253 
1254 	kau_close(rec, &ar->ar_endtime, ar->ar_event);
1255 
1256 	*pau = rec;
1257 	return (BSM_SUCCESS);
1258 }
1259 
1260 /*
1261  * Verify that a record is a valid BSM record. This verification is simple
1262  * now, but may be expanded on sometime in the future.  Return 1 if the
1263  * record is good, 0 otherwise.
1264  */
1265 int
1266 bsm_rec_verify(void *rec)
1267 {
1268 	char c = *(char *)rec;
1269 
1270 	/*
1271 	 * Check the token ID of the first token; it has to be a header
1272 	 * token.
1273 	 *
1274 	 * XXXAUDIT There needs to be a token structure to map a token.
1275 	 * XXXAUDIT 'Shouldn't be simply looking at the first char.
1276 	 */
1277 	if ((c != AUT_HEADER32) && (c != AUT_HEADER32_EX) &&
1278 	    (c != AUT_HEADER64) && (c != AUT_HEADER64_EX))
1279 		return (0);
1280 	return (1);
1281 }
1282