xref: /freebsd/usr.bin/kdump/kdump.c (revision 8a4217aacf57330755501a349d0ea662d4880386)
1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
3  *
4  * Copyright (c) 1988, 1993
5  *	The Regents of the University of California.  All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  * 3. Neither the name of the University nor the names of its contributors
16  *    may be used to endorse or promote products derived from this software
17  *    without specific prior written permission.
18  *
19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29  * SUCH DAMAGE.
30  */
31 
32 #ifndef lint
33 static const char copyright[] =
34 "@(#) Copyright (c) 1988, 1993\n\
35 	The Regents of the University of California.  All rights reserved.\n";
36 #endif /* not lint */
37 
38 #ifndef lint
39 #if 0
40 static char sccsid[] = "@(#)kdump.c	8.1 (Berkeley) 6/6/93";
41 #endif
42 #endif /* not lint */
43 #include <sys/cdefs.h>
44 __FBSDID("$FreeBSD$");
45 
46 #define _WANT_KERNEL_ERRNO
47 #include <sys/param.h>
48 #include <sys/capsicum.h>
49 #include <sys/errno.h>
50 #include <sys/time.h>
51 #include <sys/uio.h>
52 #include <sys/ktrace.h>
53 #include <sys/ioctl.h>
54 #include <sys/socket.h>
55 #include <sys/stat.h>
56 #include <sys/sysent.h>
57 #include <sys/umtx.h>
58 #include <sys/un.h>
59 #include <sys/queue.h>
60 #include <sys/wait.h>
61 #ifdef WITH_CASPER
62 #include <sys/nv.h>
63 #endif
64 #include <arpa/inet.h>
65 #include <netinet/in.h>
66 #include <ctype.h>
67 #include <capsicum_helpers.h>
68 #include <err.h>
69 #include <grp.h>
70 #include <inttypes.h>
71 #include <locale.h>
72 #include <netdb.h>
73 #include <nl_types.h>
74 #include <pwd.h>
75 #include <stddef.h>
76 #include <stdio.h>
77 #include <stdlib.h>
78 #include <string.h>
79 #include <sysdecode.h>
80 #include <time.h>
81 #include <unistd.h>
82 #include <vis.h>
83 #include "ktrace.h"
84 
85 #ifdef WITH_CASPER
86 #include <libcasper.h>
87 
88 #include <casper/cap_grp.h>
89 #include <casper/cap_pwd.h>
90 #endif
91 
92 u_int abidump(struct ktr_header *);
93 int fetchprocinfo(struct ktr_header *, u_int *);
94 int fread_tail(void *, int, int);
95 void dumpheader(struct ktr_header *);
96 void ktrsyscall(struct ktr_syscall *, u_int);
97 void ktrsysret(struct ktr_sysret *, u_int);
98 void ktrnamei(char *, int);
99 void hexdump(char *, int, int);
100 void visdump(char *, int, int);
101 void ktrgenio(struct ktr_genio *, int);
102 void ktrpsig(struct ktr_psig *);
103 void ktrcsw(struct ktr_csw *);
104 void ktrcsw_old(struct ktr_csw_old *);
105 void ktruser(int, void *);
106 void ktrcaprights(cap_rights_t *);
107 void ktritimerval(struct itimerval *it);
108 void ktrsockaddr(struct sockaddr *);
109 void ktrstat(struct stat *);
110 void ktrstruct(char *, size_t);
111 void ktrcapfail(struct ktr_cap_fail *);
112 void ktrfault(struct ktr_fault *);
113 void ktrfaultend(struct ktr_faultend *);
114 void usage(void);
115 
116 #define	TIMESTAMP_NONE		0x0
117 #define	TIMESTAMP_ABSOLUTE	0x1
118 #define	TIMESTAMP_ELAPSED	0x2
119 #define	TIMESTAMP_RELATIVE	0x4
120 
121 static int timestamp, decimal, fancy = 1, suppressdata, tail, threads, maxdata,
122     resolv = 0, abiflag = 0, syscallno = 0;
123 static const char *tracefile = DEF_TRACEFILE;
124 static struct ktr_header ktr_header;
125 
126 #define TIME_FORMAT	"%b %e %T %Y"
127 #define eqs(s1, s2)	(strcmp((s1), (s2)) == 0)
128 
129 #define	print_number64(first,i,n,c) do {				\
130 	uint64_t __v;							\
131 									\
132 	if (quad_align && (((ptrdiff_t)((i) - (first))) & 1) == 1) {	\
133 		(i)++;							\
134 		(n)--;							\
135 	}								\
136 	if (quad_slots == 2)						\
137 		__v = (uint64_t)(uint32_t)(i)[0] |			\
138 		    ((uint64_t)(uint32_t)(i)[1]) << 32;			\
139 	else								\
140 		__v = (uint64_t)*(i);					\
141 	if (decimal)							\
142 		printf("%c%jd", (c), (intmax_t)__v);			\
143 	else								\
144 		printf("%c%#jx", (c), (uintmax_t)__v);			\
145 	(i) += quad_slots;						\
146 	(n) -= quad_slots;						\
147 	(c) = ',';							\
148 } while (0)
149 
150 #define print_number(i,n,c) do {					\
151 	if (decimal)							\
152 		printf("%c%jd", c, (intmax_t)*i);			\
153 	else								\
154 		printf("%c%#jx", c, (uintmax_t)(u_register_t)*i);	\
155 	i++;								\
156 	n--;								\
157 	c = ',';							\
158 } while (0)
159 
160 struct proc_info
161 {
162 	TAILQ_ENTRY(proc_info)	info;
163 	u_int			sv_flags;
164 	pid_t			pid;
165 };
166 
167 static TAILQ_HEAD(trace_procs, proc_info) trace_procs;
168 
169 #ifdef WITH_CASPER
170 static cap_channel_t *cappwd, *capgrp;
171 #endif
172 
173 static void
174 strerror_init(void)
175 {
176 
177 	/*
178 	 * Cache NLS data before entering capability mode.
179 	 * XXXPJD: There should be strerror_init() and strsignal_init() in libc.
180 	 */
181 	(void)catopen("libc", NL_CAT_LOCALE);
182 }
183 
184 static void
185 localtime_init(void)
186 {
187 	time_t ltime;
188 
189 	/*
190 	 * Allow localtime(3) to cache /etc/localtime content before entering
191 	 * capability mode.
192 	 * XXXPJD: There should be localtime_init() in libc.
193 	 */
194 	(void)time(&ltime);
195 	(void)localtime(&ltime);
196 }
197 
198 #ifdef WITH_CASPER
199 static int
200 cappwdgrp_setup(cap_channel_t **cappwdp, cap_channel_t **capgrpp)
201 {
202 	cap_channel_t *capcas, *cappwdloc, *capgrploc;
203 	const char *cmds[1], *fields[1];
204 
205 	capcas = cap_init();
206 	if (capcas == NULL) {
207 		err(1, "unable to create casper process");
208 		exit(1);
209 	}
210 	cappwdloc = cap_service_open(capcas, "system.pwd");
211 	capgrploc = cap_service_open(capcas, "system.grp");
212 	/* Casper capability no longer needed. */
213 	cap_close(capcas);
214 	if (cappwdloc == NULL || capgrploc == NULL) {
215 		if (cappwdloc == NULL)
216 			warn("unable to open system.pwd service");
217 		if (capgrploc == NULL)
218 			warn("unable to open system.grp service");
219 		exit(1);
220 	}
221 	/* Limit system.pwd to only getpwuid() function and pw_name field. */
222 	cmds[0] = "getpwuid";
223 	if (cap_pwd_limit_cmds(cappwdloc, cmds, 1) < 0)
224 		err(1, "unable to limit system.pwd service");
225 	fields[0] = "pw_name";
226 	if (cap_pwd_limit_fields(cappwdloc, fields, 1) < 0)
227 		err(1, "unable to limit system.pwd service");
228 	/* Limit system.grp to only getgrgid() function and gr_name field. */
229 	cmds[0] = "getgrgid";
230 	if (cap_grp_limit_cmds(capgrploc, cmds, 1) < 0)
231 		err(1, "unable to limit system.grp service");
232 	fields[0] = "gr_name";
233 	if (cap_grp_limit_fields(capgrploc, fields, 1) < 0)
234 		err(1, "unable to limit system.grp service");
235 
236 	*cappwdp = cappwdloc;
237 	*capgrpp = capgrploc;
238 	return (0);
239 }
240 #endif	/* WITH_CASPER */
241 
242 static void
243 print_integer_arg(const char *(*decoder)(int), int value)
244 {
245 	const char *str;
246 
247 	str = decoder(value);
248 	if (str != NULL)
249 		printf("%s", str);
250 	else {
251 		if (decimal)
252 			printf("<invalid=%d>", value);
253 		else
254 			printf("<invalid=%#x>", value);
255 	}
256 }
257 
258 /* Like print_integer_arg but unknown values are treated as valid. */
259 static void
260 print_integer_arg_valid(const char *(*decoder)(int), int value)
261 {
262 	const char *str;
263 
264 	str = decoder(value);
265 	if (str != NULL)
266 		printf("%s", str);
267 	else {
268 		if (decimal)
269 			printf("%d", value);
270 		else
271 			printf("%#x", value);
272 	}
273 }
274 
275 static void
276 print_mask_arg(bool (*decoder)(FILE *, int, int *), int value)
277 {
278 	bool invalid;
279 	int rem;
280 
281 	printf("%#x<", value);
282 	invalid = !decoder(stdout, value, &rem);
283 	printf(">");
284 	if (invalid)
285 		printf("<invalid>%u", rem);
286 }
287 
288 static void
289 print_mask_arg0(bool (*decoder)(FILE *, int, int *), int value)
290 {
291 	bool invalid;
292 	int rem;
293 
294 	if (value == 0) {
295 		printf("0");
296 		return;
297 	}
298 	printf("%#x<", value);
299 	invalid = !decoder(stdout, value, &rem);
300 	printf(">");
301 	if (invalid)
302 		printf("<invalid>%u", rem);
303 }
304 
305 static void
306 decode_fileflags(fflags_t value)
307 {
308 	bool invalid;
309 	fflags_t rem;
310 
311 	if (value == 0) {
312 		printf("0");
313 		return;
314 	}
315 	printf("%#x<", value);
316 	invalid = !sysdecode_fileflags(stdout, value, &rem);
317 	printf(">");
318 	if (invalid)
319 		printf("<invalid>%u", rem);
320 }
321 
322 static void
323 decode_filemode(int value)
324 {
325 	bool invalid;
326 	int rem;
327 
328 	if (value == 0) {
329 		printf("0");
330 		return;
331 	}
332 	printf("%#o<", value);
333 	invalid = !sysdecode_filemode(stdout, value, &rem);
334 	printf(">");
335 	if (invalid)
336 		printf("<invalid>%u", rem);
337 }
338 
339 static void
340 print_mask_arg32(bool (*decoder)(FILE *, uint32_t, uint32_t *), uint32_t value)
341 {
342 	bool invalid;
343 	uint32_t rem;
344 
345 	printf("%#x<", value);
346 	invalid = !decoder(stdout, value, &rem);
347 	printf(">");
348 	if (invalid)
349 		printf("<invalid>%u", rem);
350 }
351 
352 static void
353 print_mask_argul(bool (*decoder)(FILE *, u_long, u_long *), u_long value)
354 {
355 	bool invalid;
356 	u_long rem;
357 
358 	if (value == 0) {
359 		printf("0");
360 		return;
361 	}
362 	printf("%#lx<", value);
363 	invalid = !decoder(stdout, value, &rem);
364 	printf(">");
365 	if (invalid)
366 		printf("<invalid>%lu", rem);
367 }
368 
369 int
370 main(int argc, char *argv[])
371 {
372 	int ch, ktrlen, size;
373 	void *m;
374 	int trpoints = ALL_POINTS;
375 	int drop_logged;
376 	pid_t pid = 0;
377 	u_int sv_flags;
378 
379 	setlocale(LC_CTYPE, "");
380 
381 	timestamp = TIMESTAMP_NONE;
382 
383 	while ((ch = getopt(argc,argv,"f:dElm:np:AHRrSsTt:")) != -1)
384 		switch (ch) {
385 		case 'A':
386 			abiflag = 1;
387 			break;
388 		case 'f':
389 			tracefile = optarg;
390 			break;
391 		case 'd':
392 			decimal = 1;
393 			break;
394 		case 'l':
395 			tail = 1;
396 			break;
397 		case 'm':
398 			maxdata = atoi(optarg);
399 			break;
400 		case 'n':
401 			fancy = 0;
402 			break;
403 		case 'p':
404 			pid = atoi(optarg);
405 			break;
406 		case 'r':
407 			resolv = 1;
408 			break;
409 		case 'S':
410 			syscallno = 1;
411 			break;
412 		case 's':
413 			suppressdata = 1;
414 			break;
415 		case 'E':
416 			timestamp |= TIMESTAMP_ELAPSED;
417 			break;
418 		case 'H':
419 			threads = 1;
420 			break;
421 		case 'R':
422 			timestamp |= TIMESTAMP_RELATIVE;
423 			break;
424 		case 'T':
425 			timestamp |= TIMESTAMP_ABSOLUTE;
426 			break;
427 		case 't':
428 			trpoints = getpoints(optarg);
429 			if (trpoints < 0)
430 				errx(1, "unknown trace point in %s", optarg);
431 			break;
432 		default:
433 			usage();
434 		}
435 
436 	if (argc > optind)
437 		usage();
438 
439 	m = malloc(size = 1025);
440 	if (m == NULL)
441 		errx(1, "%s", strerror(ENOMEM));
442 	if (strcmp(tracefile, "-") != 0)
443 		if (!freopen(tracefile, "r", stdin))
444 			err(1, "%s", tracefile);
445 
446 	strerror_init();
447 	localtime_init();
448 #ifdef WITH_CASPER
449 	if (resolv != 0) {
450 		if (cappwdgrp_setup(&cappwd, &capgrp) < 0) {
451 			cappwd = NULL;
452 			capgrp = NULL;
453 		}
454 	}
455 	if (resolv == 0 || (cappwd != NULL && capgrp != NULL)) {
456 		if (cap_enter() < 0 && errno != ENOSYS)
457 			err(1, "unable to enter capability mode");
458 	}
459 #else
460 	if (resolv == 0) {
461 		if (cap_enter() < 0 && errno != ENOSYS)
462 			err(1, "unable to enter capability mode");
463 	}
464 #endif
465 	if (caph_limit_stdio() == -1)
466 		err(1, "unable to limit stdio");
467 
468 	TAILQ_INIT(&trace_procs);
469 	drop_logged = 0;
470 	while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
471 		if (ktr_header.ktr_type & KTR_DROP) {
472 			ktr_header.ktr_type &= ~KTR_DROP;
473 			if (!drop_logged && threads) {
474 				printf(
475 				    "%6jd %6jd %-8.*s Events dropped.\n",
476 				    (intmax_t)ktr_header.ktr_pid,
477 				    ktr_header.ktr_tid > 0 ?
478 				    (intmax_t)ktr_header.ktr_tid : 0,
479 				    MAXCOMLEN, ktr_header.ktr_comm);
480 				drop_logged = 1;
481 			} else if (!drop_logged) {
482 				printf("%6jd %-8.*s Events dropped.\n",
483 				    (intmax_t)ktr_header.ktr_pid, MAXCOMLEN,
484 				    ktr_header.ktr_comm);
485 				drop_logged = 1;
486 			}
487 		}
488 		if (trpoints & (1<<ktr_header.ktr_type))
489 			if (pid == 0 || ktr_header.ktr_pid == pid ||
490 			    ktr_header.ktr_tid == pid)
491 				dumpheader(&ktr_header);
492 		if ((ktrlen = ktr_header.ktr_len) < 0)
493 			errx(1, "bogus length 0x%x", ktrlen);
494 		if (ktrlen > size) {
495 			m = realloc(m, ktrlen+1);
496 			if (m == NULL)
497 				errx(1, "%s", strerror(ENOMEM));
498 			size = ktrlen;
499 		}
500 		if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
501 			errx(1, "data too short");
502 		if (fetchprocinfo(&ktr_header, (u_int *)m) != 0)
503 			continue;
504 		sv_flags = abidump(&ktr_header);
505 		if (pid && ktr_header.ktr_pid != pid &&
506 		    ktr_header.ktr_tid != pid)
507 			continue;
508 		if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
509 			continue;
510 		drop_logged = 0;
511 		switch (ktr_header.ktr_type) {
512 		case KTR_SYSCALL:
513 			ktrsyscall((struct ktr_syscall *)m, sv_flags);
514 			break;
515 		case KTR_SYSRET:
516 			ktrsysret((struct ktr_sysret *)m, sv_flags);
517 			break;
518 		case KTR_NAMEI:
519 		case KTR_SYSCTL:
520 			ktrnamei(m, ktrlen);
521 			break;
522 		case KTR_GENIO:
523 			ktrgenio((struct ktr_genio *)m, ktrlen);
524 			break;
525 		case KTR_PSIG:
526 			ktrpsig((struct ktr_psig *)m);
527 			break;
528 		case KTR_CSW:
529 			if (ktrlen == sizeof(struct ktr_csw_old))
530 				ktrcsw_old((struct ktr_csw_old *)m);
531 			else
532 				ktrcsw((struct ktr_csw *)m);
533 			break;
534 		case KTR_USER:
535 			ktruser(ktrlen, m);
536 			break;
537 		case KTR_STRUCT:
538 			ktrstruct(m, ktrlen);
539 			break;
540 		case KTR_CAPFAIL:
541 			ktrcapfail((struct ktr_cap_fail *)m);
542 			break;
543 		case KTR_FAULT:
544 			ktrfault((struct ktr_fault *)m);
545 			break;
546 		case KTR_FAULTEND:
547 			ktrfaultend((struct ktr_faultend *)m);
548 			break;
549 		default:
550 			printf("\n");
551 			break;
552 		}
553 		if (tail)
554 			fflush(stdout);
555 	}
556 	return 0;
557 }
558 
559 int
560 fread_tail(void *buf, int size, int num)
561 {
562 	int i;
563 
564 	while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
565 		sleep(1);
566 		clearerr(stdin);
567 	}
568 	return (i);
569 }
570 
571 int
572 fetchprocinfo(struct ktr_header *kth, u_int *flags)
573 {
574 	struct proc_info *pi;
575 
576 	switch (kth->ktr_type) {
577 	case KTR_PROCCTOR:
578 		TAILQ_FOREACH(pi, &trace_procs, info) {
579 			if (pi->pid == kth->ktr_pid) {
580 				TAILQ_REMOVE(&trace_procs, pi, info);
581 				break;
582 			}
583 		}
584 		pi = malloc(sizeof(struct proc_info));
585 		if (pi == NULL)
586 			errx(1, "%s", strerror(ENOMEM));
587 		pi->sv_flags = *flags;
588 		pi->pid = kth->ktr_pid;
589 		TAILQ_INSERT_TAIL(&trace_procs, pi, info);
590 		return (1);
591 
592 	case KTR_PROCDTOR:
593 		TAILQ_FOREACH(pi, &trace_procs, info) {
594 			if (pi->pid == kth->ktr_pid) {
595 				TAILQ_REMOVE(&trace_procs, pi, info);
596 				free(pi);
597 				break;
598 			}
599 		}
600 		return (1);
601 	}
602 
603 	return (0);
604 }
605 
606 u_int
607 abidump(struct ktr_header *kth)
608 {
609 	struct proc_info *pi;
610 	const char *abi;
611 	const char *arch;
612 	u_int flags = 0;
613 
614 	TAILQ_FOREACH(pi, &trace_procs, info) {
615 		if (pi->pid == kth->ktr_pid) {
616 			flags = pi->sv_flags;
617 			break;
618 		}
619 	}
620 
621 	if (abiflag == 0)
622 		return (flags);
623 
624 	switch (flags & SV_ABI_MASK) {
625 	case SV_ABI_LINUX:
626 		abi = "L";
627 		break;
628 	case SV_ABI_FREEBSD:
629 		abi = "F";
630 		break;
631 	case SV_ABI_CLOUDABI:
632 		abi = "C";
633 		break;
634 	default:
635 		abi = "U";
636 		break;
637 	}
638 
639 	if (flags & SV_LP64)
640 		arch = "64";
641 	else if (flags & SV_ILP32)
642 		arch = "32";
643 	else
644 		arch = "00";
645 
646 	printf("%s%s  ", abi, arch);
647 
648 	return (flags);
649 }
650 
651 void
652 dumpheader(struct ktr_header *kth)
653 {
654 	static char unknown[64];
655 	static struct timeval prevtime, prevtime_e;
656 	struct timeval temp;
657 	const char *type;
658 	const char *sign;
659 
660 	switch (kth->ktr_type) {
661 	case KTR_SYSCALL:
662 		type = "CALL";
663 		break;
664 	case KTR_SYSRET:
665 		type = "RET ";
666 		break;
667 	case KTR_NAMEI:
668 		type = "NAMI";
669 		break;
670 	case KTR_GENIO:
671 		type = "GIO ";
672 		break;
673 	case KTR_PSIG:
674 		type = "PSIG";
675 		break;
676 	case KTR_CSW:
677 		type = "CSW ";
678 		break;
679 	case KTR_USER:
680 		type = "USER";
681 		break;
682 	case KTR_STRUCT:
683 		type = "STRU";
684 		break;
685 	case KTR_SYSCTL:
686 		type = "SCTL";
687 		break;
688 	case KTR_PROCCTOR:
689 		/* FALLTHROUGH */
690 	case KTR_PROCDTOR:
691 		return;
692 	case KTR_CAPFAIL:
693 		type = "CAP ";
694 		break;
695 	case KTR_FAULT:
696 		type = "PFLT";
697 		break;
698 	case KTR_FAULTEND:
699 		type = "PRET";
700 		break;
701 	default:
702 		sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
703 		type = unknown;
704 	}
705 
706 	/*
707 	 * The ktr_tid field was previously the ktr_buffer field, which held
708 	 * the kernel pointer value for the buffer associated with data
709 	 * following the record header.  It now holds a threadid, but only
710 	 * for trace files after the change.  Older trace files still contain
711 	 * kernel pointers.  Detect this and suppress the results by printing
712 	 * negative tid's as 0.
713 	 */
714 	if (threads)
715 		printf("%6jd %6jd %-8.*s ", (intmax_t)kth->ktr_pid,
716 		    kth->ktr_tid > 0 ? (intmax_t)kth->ktr_tid : 0,
717 		    MAXCOMLEN, kth->ktr_comm);
718 	else
719 		printf("%6jd %-8.*s ", (intmax_t)kth->ktr_pid, MAXCOMLEN,
720 		    kth->ktr_comm);
721         if (timestamp) {
722 		if (timestamp & TIMESTAMP_ABSOLUTE) {
723 			printf("%jd.%06ld ", (intmax_t)kth->ktr_time.tv_sec,
724 			    kth->ktr_time.tv_usec);
725 		}
726 		if (timestamp & TIMESTAMP_ELAPSED) {
727 			if (prevtime_e.tv_sec == 0)
728 				prevtime_e = kth->ktr_time;
729 			timersub(&kth->ktr_time, &prevtime_e, &temp);
730 			printf("%jd.%06ld ", (intmax_t)temp.tv_sec,
731 			    temp.tv_usec);
732 		}
733 		if (timestamp & TIMESTAMP_RELATIVE) {
734 			if (prevtime.tv_sec == 0)
735 				prevtime = kth->ktr_time;
736 			if (timercmp(&kth->ktr_time, &prevtime, <)) {
737 				timersub(&prevtime, &kth->ktr_time, &temp);
738 				sign = "-";
739 			} else {
740 				timersub(&kth->ktr_time, &prevtime, &temp);
741 				sign = "";
742 			}
743 			prevtime = kth->ktr_time;
744 			printf("%s%jd.%06ld ", sign, (intmax_t)temp.tv_sec,
745 			    temp.tv_usec);
746 		}
747 	}
748 	printf("%s  ", type);
749 }
750 
751 #include <sys/syscall.h>
752 
753 static void
754 ioctlname(unsigned long val)
755 {
756 	const char *str;
757 
758 	str = sysdecode_ioctlname(val);
759 	if (str != NULL)
760 		printf("%s", str);
761 	else if (decimal)
762 		printf("%lu", val);
763 	else
764 		printf("%#lx", val);
765 }
766 
767 static enum sysdecode_abi
768 syscallabi(u_int sv_flags)
769 {
770 
771 	if (sv_flags == 0)
772 		return (SYSDECODE_ABI_FREEBSD);
773 	switch (sv_flags & SV_ABI_MASK) {
774 	case SV_ABI_FREEBSD:
775 		return (SYSDECODE_ABI_FREEBSD);
776 #if defined(__amd64__) || defined(__i386__)
777 	case SV_ABI_LINUX:
778 #ifdef __amd64__
779 		if (sv_flags & SV_ILP32)
780 			return (SYSDECODE_ABI_LINUX32);
781 #endif
782 		return (SYSDECODE_ABI_LINUX);
783 #endif
784 #if defined(__aarch64__) || defined(__amd64__)
785 	case SV_ABI_CLOUDABI:
786 		return (SYSDECODE_ABI_CLOUDABI64);
787 #endif
788 	default:
789 		return (SYSDECODE_ABI_UNKNOWN);
790 	}
791 }
792 
793 static void
794 syscallname(u_int code, u_int sv_flags)
795 {
796 	const char *name;
797 
798 	name = sysdecode_syscallname(syscallabi(sv_flags), code);
799 	if (name == NULL)
800 		printf("[%d]", code);
801 	else {
802 		printf("%s", name);
803 		if (syscallno)
804 			printf("[%d]", code);
805 	}
806 }
807 
808 static void
809 print_signal(int signo)
810 {
811 	const char *signame;
812 
813 	signame = sysdecode_signal(signo);
814 	if (signame != NULL)
815 		printf("%s", signame);
816 	else
817 		printf("SIG %d", signo);
818 }
819 
820 void
821 ktrsyscall(struct ktr_syscall *ktr, u_int sv_flags)
822 {
823 	int narg = ktr->ktr_narg;
824 	register_t *ip, *first;
825 	intmax_t arg;
826 	int quad_align, quad_slots;
827 
828 	syscallname(ktr->ktr_code, sv_flags);
829 	ip = first = &ktr->ktr_args[0];
830 	if (narg) {
831 		char c = '(';
832 		if (fancy &&
833 		    (sv_flags == 0 ||
834 		    (sv_flags & SV_ABI_MASK) == SV_ABI_FREEBSD)) {
835 			quad_align = 0;
836 			if (sv_flags & SV_ILP32) {
837 #ifdef __powerpc__
838 				quad_align = 1;
839 #endif
840 				quad_slots = 2;
841 			} else
842 				quad_slots = 1;
843 			switch (ktr->ktr_code) {
844 			case SYS_bindat:
845 			case SYS_chflagsat:
846 			case SYS_connectat:
847 			case SYS_faccessat:
848 			case SYS_fchmodat:
849 			case SYS_fchownat:
850 			case SYS_fstatat:
851 			case SYS_futimesat:
852 			case SYS_linkat:
853 			case SYS_mkdirat:
854 			case SYS_mkfifoat:
855 			case SYS_mknodat:
856 			case SYS_openat:
857 			case SYS_readlinkat:
858 			case SYS_renameat:
859 			case SYS_unlinkat:
860 			case SYS_utimensat:
861 				putchar('(');
862 				print_integer_arg_valid(sysdecode_atfd, *ip);
863 				c = ',';
864 				ip++;
865 				narg--;
866 				break;
867 			}
868 			switch (ktr->ktr_code) {
869 			case SYS_ioctl: {
870 				print_number(ip, narg, c);
871 				putchar(c);
872 				ioctlname(*ip);
873 				c = ',';
874 				ip++;
875 				narg--;
876 				break;
877 			}
878 			case SYS_ptrace:
879 				putchar('(');
880 				print_integer_arg(sysdecode_ptrace_request, *ip);
881 				c = ',';
882 				ip++;
883 				narg--;
884 				break;
885 			case SYS_access:
886 			case SYS_eaccess:
887 			case SYS_faccessat:
888 				print_number(ip, narg, c);
889 				putchar(',');
890 				print_mask_arg(sysdecode_access_mode, *ip);
891 				ip++;
892 				narg--;
893 				break;
894 			case SYS_open:
895 			case SYS_openat:
896 				print_number(ip, narg, c);
897 				putchar(',');
898 				print_mask_arg(sysdecode_open_flags, ip[0]);
899 				if ((ip[0] & O_CREAT) == O_CREAT) {
900 					putchar(',');
901 					decode_filemode(ip[1]);
902 				}
903 				ip += 2;
904 				narg -= 2;
905 				break;
906 			case SYS_wait4:
907 				print_number(ip, narg, c);
908 				print_number(ip, narg, c);
909 				putchar(',');
910 				print_mask_arg0(sysdecode_wait4_options, *ip);
911 				ip++;
912 				narg--;
913 				break;
914 			case SYS_wait6:
915 				putchar('(');
916 				print_integer_arg(sysdecode_idtype, *ip);
917 				c = ',';
918 				ip++;
919 				narg--;
920 				print_number64(first, ip, narg, c);
921 				print_number(ip, narg, c);
922 				putchar(',');
923 				print_mask_arg(sysdecode_wait6_options, *ip);
924 				ip++;
925 				narg--;
926 				break;
927 			case SYS_chmod:
928 			case SYS_fchmod:
929 			case SYS_lchmod:
930 			case SYS_fchmodat:
931 				print_number(ip, narg, c);
932 				putchar(',');
933 				decode_filemode(*ip);
934 				ip++;
935 				narg--;
936 				break;
937 			case SYS_mknodat:
938 				print_number(ip, narg, c);
939 				putchar(',');
940 				decode_filemode(*ip);
941 				ip++;
942 				narg--;
943 				break;
944 			case SYS_getfsstat:
945 				print_number(ip, narg, c);
946 				print_number(ip, narg, c);
947 				putchar(',');
948 				print_integer_arg(sysdecode_getfsstat_mode, *ip);
949 				ip++;
950 				narg--;
951 				break;
952 			case SYS_mount:
953 				print_number(ip, narg, c);
954 				print_number(ip, narg, c);
955 				putchar(',');
956 				print_mask_arg(sysdecode_mount_flags, *ip);
957 				ip++;
958 				narg--;
959 				break;
960 			case SYS_unmount:
961 				print_number(ip, narg, c);
962 				putchar(',');
963 				print_mask_arg(sysdecode_mount_flags, *ip);
964 				ip++;
965 				narg--;
966 				break;
967 			case SYS_recvmsg:
968 			case SYS_sendmsg:
969 				print_number(ip, narg, c);
970 				print_number(ip, narg, c);
971 				putchar(',');
972 				print_mask_arg0(sysdecode_msg_flags, *ip);
973 				ip++;
974 				narg--;
975 				break;
976 			case SYS_recvfrom:
977 			case SYS_sendto:
978 				print_number(ip, narg, c);
979 				print_number(ip, narg, c);
980 				print_number(ip, narg, c);
981 				putchar(',');
982 				print_mask_arg0(sysdecode_msg_flags, *ip);
983 				ip++;
984 				narg--;
985 				break;
986 			case SYS_chflags:
987 			case SYS_chflagsat:
988 			case SYS_fchflags:
989 			case SYS_lchflags:
990 				print_number(ip, narg, c);
991 				putchar(',');
992 				decode_fileflags(*ip);
993 				ip++;
994 				narg--;
995 				break;
996 			case SYS_kill:
997 				print_number(ip, narg, c);
998 				putchar(',');
999 				print_signal(*ip);
1000 				ip++;
1001 				narg--;
1002 				break;
1003 			case SYS_reboot:
1004 				putchar('(');
1005 				print_mask_arg(sysdecode_reboot_howto, *ip);
1006 				ip++;
1007 				narg--;
1008 				break;
1009 			case SYS_umask:
1010 				putchar('(');
1011 				decode_filemode(*ip);
1012 				ip++;
1013 				narg--;
1014 				break;
1015 			case SYS_msync:
1016 				print_number(ip, narg, c);
1017 				print_number(ip, narg, c);
1018 				putchar(',');
1019 				print_mask_arg(sysdecode_msync_flags, *ip);
1020 				ip++;
1021 				narg--;
1022 				break;
1023 #ifdef SYS_freebsd6_mmap
1024 			case SYS_freebsd6_mmap:
1025 				print_number(ip, narg, c);
1026 				print_number(ip, narg, c);
1027 				putchar(',');
1028 				print_mask_arg(sysdecode_mmap_prot, *ip);
1029 				putchar(',');
1030 				ip++;
1031 				narg--;
1032 				print_mask_arg(sysdecode_mmap_flags, *ip);
1033 				ip++;
1034 				narg--;
1035 				break;
1036 #endif
1037 			case SYS_mmap:
1038 				print_number(ip, narg, c);
1039 				print_number(ip, narg, c);
1040 				putchar(',');
1041 				print_mask_arg(sysdecode_mmap_prot, *ip);
1042 				putchar(',');
1043 				ip++;
1044 				narg--;
1045 				print_mask_arg(sysdecode_mmap_flags, *ip);
1046 				ip++;
1047 				narg--;
1048 				break;
1049 			case SYS_mprotect:
1050 				print_number(ip, narg, c);
1051 				print_number(ip, narg, c);
1052 				putchar(',');
1053 				print_mask_arg(sysdecode_mmap_prot, *ip);
1054 				ip++;
1055 				narg--;
1056 				break;
1057 			case SYS_madvise:
1058 				print_number(ip, narg, c);
1059 				print_number(ip, narg, c);
1060 				putchar(',');
1061 				print_integer_arg(sysdecode_madvice, *ip);
1062 				ip++;
1063 				narg--;
1064 				break;
1065 			case SYS_pathconf:
1066 			case SYS_lpathconf:
1067 			case SYS_fpathconf:
1068 				print_number(ip, narg, c);
1069 				putchar(',');
1070 				print_integer_arg(sysdecode_pathconf_name, *ip);
1071 				ip++;
1072 				narg--;
1073 				break;
1074 			case SYS_getpriority:
1075 			case SYS_setpriority:
1076 				putchar('(');
1077 				print_integer_arg(sysdecode_prio_which, *ip);
1078 				c = ',';
1079 				ip++;
1080 				narg--;
1081 				break;
1082 			case SYS_fcntl:
1083 				print_number(ip, narg, c);
1084 				putchar(',');
1085 				print_integer_arg(sysdecode_fcntl_cmd, ip[0]);
1086 				if (sysdecode_fcntl_arg_p(ip[0])) {
1087 					putchar(',');
1088 					if (ip[0] == F_SETFL)
1089 						print_mask_arg(
1090 						    sysdecode_fcntl_fileflags,
1091 							ip[1]);
1092 					else
1093 						sysdecode_fcntl_arg(stdout,
1094 						    ip[0], ip[1],
1095 						    decimal ? 10 : 16);
1096 				}
1097 				ip += 2;
1098 				narg -= 2;
1099 				break;
1100 			case SYS_socket: {
1101 				int sockdomain;
1102 				putchar('(');
1103 				sockdomain = *ip;
1104 				print_integer_arg(sysdecode_socketdomain,
1105 				    sockdomain);
1106 				ip++;
1107 				narg--;
1108 				putchar(',');
1109 				print_mask_arg(sysdecode_socket_type, *ip);
1110 				ip++;
1111 				narg--;
1112 				if (sockdomain == PF_INET ||
1113 				    sockdomain == PF_INET6) {
1114 					putchar(',');
1115 					print_integer_arg(sysdecode_ipproto,
1116 					    *ip);
1117 					ip++;
1118 					narg--;
1119 				}
1120 				c = ',';
1121 				break;
1122 			}
1123 			case SYS_setsockopt:
1124 			case SYS_getsockopt: {
1125 				const char *str;
1126 
1127 				print_number(ip, narg, c);
1128 				putchar(',');
1129 				print_integer_arg_valid(sysdecode_sockopt_level,
1130 				    *ip);
1131 				str = sysdecode_sockopt_name(ip[0], ip[1]);
1132 				if (str != NULL) {
1133 					printf(",%s", str);
1134 					ip++;
1135 					narg--;
1136 				}
1137 				ip++;
1138 				narg--;
1139 				break;
1140 			}
1141 #ifdef SYS_freebsd6_lseek
1142 			case SYS_freebsd6_lseek:
1143 				print_number(ip, narg, c);
1144 				/* Hidden 'pad' argument, not in lseek(2) */
1145 				print_number(ip, narg, c);
1146 				print_number64(first, ip, narg, c);
1147 				putchar(',');
1148 				print_integer_arg(sysdecode_whence, *ip);
1149 				ip++;
1150 				narg--;
1151 				break;
1152 #endif
1153 			case SYS_lseek:
1154 				print_number(ip, narg, c);
1155 				print_number64(first, ip, narg, c);
1156 				putchar(',');
1157 				print_integer_arg(sysdecode_whence, *ip);
1158 				ip++;
1159 				narg--;
1160 				break;
1161 			case SYS_flock:
1162 				print_number(ip, narg, c);
1163 				putchar(',');
1164 				print_mask_arg(sysdecode_flock_operation, *ip);
1165 				ip++;
1166 				narg--;
1167 				break;
1168 			case SYS_mkfifo:
1169 			case SYS_mkfifoat:
1170 			case SYS_mkdir:
1171 			case SYS_mkdirat:
1172 				print_number(ip, narg, c);
1173 				putchar(',');
1174 				decode_filemode(*ip);
1175 				ip++;
1176 				narg--;
1177 				break;
1178 			case SYS_shutdown:
1179 				print_number(ip, narg, c);
1180 				putchar(',');
1181 				print_integer_arg(sysdecode_shutdown_how, *ip);
1182 				ip++;
1183 				narg--;
1184 				break;
1185 			case SYS_socketpair:
1186 				putchar('(');
1187 				print_integer_arg(sysdecode_socketdomain, *ip);
1188 				ip++;
1189 				narg--;
1190 				putchar(',');
1191 				print_mask_arg(sysdecode_socket_type, *ip);
1192 				ip++;
1193 				narg--;
1194 				c = ',';
1195 				break;
1196 			case SYS_getrlimit:
1197 			case SYS_setrlimit:
1198 				putchar('(');
1199 				print_integer_arg(sysdecode_rlimit, *ip);
1200 				ip++;
1201 				narg--;
1202 				c = ',';
1203 				break;
1204 			case SYS_getrusage:
1205 				putchar('(');
1206 				print_integer_arg(sysdecode_getrusage_who, *ip);
1207 				ip++;
1208 				narg--;
1209 				c = ',';
1210 				break;
1211 			case SYS_quotactl:
1212 				print_number(ip, narg, c);
1213 				putchar(',');
1214 				if (!sysdecode_quotactl_cmd(stdout, *ip)) {
1215 					if (decimal)
1216 						printf("<invalid=%d>", (int)*ip);
1217 					else
1218 						printf("<invalid=%#x>",
1219 						    (int)*ip);
1220 				}
1221 				ip++;
1222 				narg--;
1223 				c = ',';
1224 				break;
1225 			case SYS_nfssvc:
1226 				putchar('(');
1227 				print_integer_arg(sysdecode_nfssvc_flags, *ip);
1228 				ip++;
1229 				narg--;
1230 				c = ',';
1231 				break;
1232 			case SYS_rtprio:
1233 			case SYS_rtprio_thread:
1234 				putchar('(');
1235 				print_integer_arg(sysdecode_rtprio_function,
1236 				    *ip);
1237 				ip++;
1238 				narg--;
1239 				c = ',';
1240 				break;
1241 			case SYS___semctl:
1242 				print_number(ip, narg, c);
1243 				print_number(ip, narg, c);
1244 				putchar(',');
1245 				print_integer_arg(sysdecode_semctl_cmd, *ip);
1246 				ip++;
1247 				narg--;
1248 				break;
1249 			case SYS_semget:
1250 				print_number(ip, narg, c);
1251 				print_number(ip, narg, c);
1252 				putchar(',');
1253 				print_mask_arg(sysdecode_semget_flags, *ip);
1254 				ip++;
1255 				narg--;
1256 				break;
1257 			case SYS_msgctl:
1258 				print_number(ip, narg, c);
1259 				putchar(',');
1260 				print_integer_arg(sysdecode_msgctl_cmd, *ip);
1261 				ip++;
1262 				narg--;
1263 				break;
1264 			case SYS_shmat:
1265 				print_number(ip, narg, c);
1266 				print_number(ip, narg, c);
1267 				putchar(',');
1268 				print_mask_arg(sysdecode_shmat_flags, *ip);
1269 				ip++;
1270 				narg--;
1271 				break;
1272 			case SYS_shmctl:
1273 				print_number(ip, narg, c);
1274 				putchar(',');
1275 				print_integer_arg(sysdecode_shmctl_cmd, *ip);
1276 				ip++;
1277 				narg--;
1278 				break;
1279 			case SYS_shm_open:
1280 				print_number(ip, narg, c);
1281 				putchar(',');
1282 				print_mask_arg(sysdecode_open_flags, ip[0]);
1283 				putchar(',');
1284 				decode_filemode(ip[1]);
1285 				ip += 2;
1286 				narg -= 2;
1287 				break;
1288 			case SYS_minherit:
1289 				print_number(ip, narg, c);
1290 				print_number(ip, narg, c);
1291 				putchar(',');
1292 				print_integer_arg(sysdecode_minherit_inherit,
1293 				    *ip);
1294 				ip++;
1295 				narg--;
1296 				break;
1297 			case SYS_rfork:
1298 				putchar('(');
1299 				print_mask_arg(sysdecode_rfork_flags, *ip);
1300 				ip++;
1301 				narg--;
1302 				c = ',';
1303 				break;
1304 			case SYS_lio_listio:
1305 				putchar('(');
1306 				print_integer_arg(sysdecode_lio_listio_mode,
1307 				    *ip);
1308 				ip++;
1309 				narg--;
1310 				c = ',';
1311 				break;
1312 			case SYS_mlockall:
1313 				putchar('(');
1314 				print_mask_arg(sysdecode_mlockall_flags, *ip);
1315 				ip++;
1316 				narg--;
1317 				break;
1318 			case SYS_sched_setscheduler:
1319 				print_number(ip, narg, c);
1320 				putchar(',');
1321 				print_integer_arg(sysdecode_scheduler_policy,
1322 				    *ip);
1323 				ip++;
1324 				narg--;
1325 				break;
1326 			case SYS_sched_get_priority_max:
1327 			case SYS_sched_get_priority_min:
1328 				putchar('(');
1329 				print_integer_arg(sysdecode_scheduler_policy,
1330 				    *ip);
1331 				ip++;
1332 				narg--;
1333 				break;
1334 			case SYS_sendfile:
1335 				print_number(ip, narg, c);
1336 				print_number(ip, narg, c);
1337 				print_number(ip, narg, c);
1338 				print_number(ip, narg, c);
1339 				print_number(ip, narg, c);
1340 				print_number(ip, narg, c);
1341 				putchar(',');
1342 				print_mask_arg(sysdecode_sendfile_flags, *ip);
1343 				ip++;
1344 				narg--;
1345 				break;
1346 			case SYS_kldsym:
1347 				print_number(ip, narg, c);
1348 				putchar(',');
1349 				print_integer_arg(sysdecode_kldsym_cmd, *ip);
1350 				ip++;
1351 				narg--;
1352 				break;
1353 			case SYS_sigprocmask:
1354 				putchar('(');
1355 				print_integer_arg(sysdecode_sigprocmask_how,
1356 				    *ip);
1357 				ip++;
1358 				narg--;
1359 				c = ',';
1360 				break;
1361 			case SYS___acl_get_file:
1362 			case SYS___acl_set_file:
1363 			case SYS___acl_get_fd:
1364 			case SYS___acl_set_fd:
1365 			case SYS___acl_delete_file:
1366 			case SYS___acl_delete_fd:
1367 			case SYS___acl_aclcheck_file:
1368 			case SYS___acl_aclcheck_fd:
1369 			case SYS___acl_get_link:
1370 			case SYS___acl_set_link:
1371 			case SYS___acl_delete_link:
1372 			case SYS___acl_aclcheck_link:
1373 				print_number(ip, narg, c);
1374 				putchar(',');
1375 				print_integer_arg(sysdecode_acltype, *ip);
1376 				ip++;
1377 				narg--;
1378 				break;
1379 			case SYS_sigaction:
1380 				putchar('(');
1381 				print_signal(*ip);
1382 				ip++;
1383 				narg--;
1384 				c = ',';
1385 				break;
1386 			case SYS_extattrctl:
1387 				print_number(ip, narg, c);
1388 				putchar(',');
1389 				print_integer_arg(sysdecode_extattrnamespace,
1390 				    *ip);
1391 				ip++;
1392 				narg--;
1393 				break;
1394 			case SYS_nmount:
1395 				print_number(ip, narg, c);
1396 				print_number(ip, narg, c);
1397 				putchar(',');
1398 				print_mask_arg(sysdecode_mount_flags, *ip);
1399 				ip++;
1400 				narg--;
1401 				break;
1402 			case SYS_thr_create:
1403 				print_number(ip, narg, c);
1404 				print_number(ip, narg, c);
1405 				putchar(',');
1406 				print_mask_arg(sysdecode_thr_create_flags, *ip);
1407 				ip++;
1408 				narg--;
1409 				break;
1410 			case SYS_thr_kill:
1411 				print_number(ip, narg, c);
1412 				putchar(',');
1413 				print_signal(*ip);
1414 				ip++;
1415 				narg--;
1416 				break;
1417 			case SYS_kldunloadf:
1418 				print_number(ip, narg, c);
1419 				putchar(',');
1420 				print_integer_arg(sysdecode_kldunload_flags,
1421 				    *ip);
1422 				ip++;
1423 				narg--;
1424 				break;
1425 			case SYS_linkat:
1426 			case SYS_renameat:
1427 			case SYS_symlinkat:
1428 				print_number(ip, narg, c);
1429 				putchar(',');
1430 				print_integer_arg_valid(sysdecode_atfd, *ip);
1431 				ip++;
1432 				narg--;
1433 				print_number(ip, narg, c);
1434 				break;
1435 			case SYS_cap_fcntls_limit:
1436 				print_number(ip, narg, c);
1437 				putchar(',');
1438 				arg = *ip;
1439 				ip++;
1440 				narg--;
1441 				print_mask_arg32(sysdecode_cap_fcntlrights, arg);
1442 				break;
1443 			case SYS_posix_fadvise:
1444 				print_number(ip, narg, c);
1445 				print_number(ip, narg, c);
1446 				print_number(ip, narg, c);
1447 				(void)putchar(',');
1448 				print_integer_arg(sysdecode_fadvice, *ip);
1449 				ip++;
1450 				narg--;
1451 				break;
1452 			case SYS_procctl:
1453 				putchar('(');
1454 				print_integer_arg(sysdecode_idtype, *ip);
1455 				c = ',';
1456 				ip++;
1457 				narg--;
1458 				print_number64(first, ip, narg, c);
1459 				putchar(',');
1460 				print_integer_arg(sysdecode_procctl_cmd, *ip);
1461 				ip++;
1462 				narg--;
1463 				break;
1464 			case SYS__umtx_op:
1465 				print_number(ip, narg, c);
1466 				putchar(',');
1467 				print_integer_arg(sysdecode_umtx_op, *ip);
1468 				switch (*ip) {
1469 				case UMTX_OP_CV_WAIT:
1470 					ip++;
1471 					narg--;
1472 					putchar(',');
1473 					print_mask_argul(
1474 					    sysdecode_umtx_cvwait_flags, *ip);
1475 					break;
1476 				case UMTX_OP_RW_RDLOCK:
1477 					ip++;
1478 					narg--;
1479 					putchar(',');
1480 					print_mask_argul(
1481 					    sysdecode_umtx_rwlock_flags, *ip);
1482 					break;
1483 				}
1484 				ip++;
1485 				narg--;
1486 				break;
1487 			case SYS_ftruncate:
1488 			case SYS_truncate:
1489 				print_number(ip, narg, c);
1490 				print_number64(first, ip, narg, c);
1491 				break;
1492 			case SYS_fchownat:
1493 				print_number(ip, narg, c);
1494 				print_number(ip, narg, c);
1495 				print_number(ip, narg, c);
1496 				break;
1497 			case SYS_fstatat:
1498 			case SYS_utimensat:
1499 				print_number(ip, narg, c);
1500 				print_number(ip, narg, c);
1501 				break;
1502 			case SYS_unlinkat:
1503 				print_number(ip, narg, c);
1504 				break;
1505 			case SYS_sysarch:
1506 				putchar('(');
1507 				print_integer_arg(sysdecode_sysarch_number, *ip);
1508 				ip++;
1509 				narg--;
1510 				c = ',';
1511 				break;
1512 			}
1513 			switch (ktr->ktr_code) {
1514 			case SYS_chflagsat:
1515 			case SYS_fchownat:
1516 			case SYS_faccessat:
1517 			case SYS_fchmodat:
1518 			case SYS_fstatat:
1519 			case SYS_linkat:
1520 			case SYS_unlinkat:
1521 			case SYS_utimensat:
1522 				putchar(',');
1523 				print_mask_arg0(sysdecode_atflags, *ip);
1524 				ip++;
1525 				narg--;
1526 				break;
1527 			}
1528 		}
1529 		while (narg > 0) {
1530 			print_number(ip, narg, c);
1531 		}
1532 		putchar(')');
1533 	}
1534 	putchar('\n');
1535 }
1536 
1537 void
1538 ktrsysret(struct ktr_sysret *ktr, u_int sv_flags)
1539 {
1540 	register_t ret = ktr->ktr_retval;
1541 	int error = ktr->ktr_error;
1542 
1543 	syscallname(ktr->ktr_code, sv_flags);
1544 	printf(" ");
1545 
1546 	if (error == 0) {
1547 		if (fancy) {
1548 			printf("%ld", (long)ret);
1549 			if (ret < 0 || ret > 9)
1550 				printf("/%#lx", (unsigned long)ret);
1551 		} else {
1552 			if (decimal)
1553 				printf("%ld", (long)ret);
1554 			else
1555 				printf("%#lx", (unsigned long)ret);
1556 		}
1557 	} else if (error == ERESTART)
1558 		printf("RESTART");
1559 	else if (error == EJUSTRETURN)
1560 		printf("JUSTRETURN");
1561 	else {
1562 		printf("-1 errno %d", sysdecode_freebsd_to_abi_errno(
1563 		    syscallabi(sv_flags), error));
1564 		if (fancy)
1565 			printf(" %s", strerror(ktr->ktr_error));
1566 	}
1567 	putchar('\n');
1568 }
1569 
1570 void
1571 ktrnamei(char *cp, int len)
1572 {
1573 	printf("\"%.*s\"\n", len, cp);
1574 }
1575 
1576 void
1577 hexdump(char *p, int len, int screenwidth)
1578 {
1579 	int n, i;
1580 	int width;
1581 
1582 	width = 0;
1583 	do {
1584 		width += 2;
1585 		i = 13;			/* base offset */
1586 		i += (width / 2) + 1;	/* spaces every second byte */
1587 		i += (width * 2);	/* width of bytes */
1588 		i += 3;			/* "  |" */
1589 		i += width;		/* each byte */
1590 		i += 1;			/* "|" */
1591 	} while (i < screenwidth);
1592 	width -= 2;
1593 
1594 	for (n = 0; n < len; n += width) {
1595 		for (i = n; i < n + width; i++) {
1596 			if ((i % width) == 0) {	/* beginning of line */
1597 				printf("       0x%04x", i);
1598 			}
1599 			if ((i % 2) == 0) {
1600 				printf(" ");
1601 			}
1602 			if (i < len)
1603 				printf("%02x", p[i] & 0xff);
1604 			else
1605 				printf("  ");
1606 		}
1607 		printf("  |");
1608 		for (i = n; i < n + width; i++) {
1609 			if (i >= len)
1610 				break;
1611 			if (p[i] >= ' ' && p[i] <= '~')
1612 				printf("%c", p[i]);
1613 			else
1614 				printf(".");
1615 		}
1616 		printf("|\n");
1617 	}
1618 	if ((i % width) != 0)
1619 		printf("\n");
1620 }
1621 
1622 void
1623 visdump(char *dp, int datalen, int screenwidth)
1624 {
1625 	int col = 0;
1626 	char *cp;
1627 	int width;
1628 	char visbuf[5];
1629 
1630 	printf("       \"");
1631 	col = 8;
1632 	for (;datalen > 0; datalen--, dp++) {
1633 		 vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
1634 		cp = visbuf;
1635 		/*
1636 		 * Keep track of printables and
1637 		 * space chars (like fold(1)).
1638 		 */
1639 		if (col == 0) {
1640 			putchar('\t');
1641 			col = 8;
1642 		}
1643 		switch(*cp) {
1644 		case '\n':
1645 			col = 0;
1646 			putchar('\n');
1647 			continue;
1648 		case '\t':
1649 			width = 8 - (col&07);
1650 			break;
1651 		default:
1652 			width = strlen(cp);
1653 		}
1654 		if (col + width > (screenwidth-2)) {
1655 			printf("\\\n\t");
1656 			col = 8;
1657 		}
1658 		col += width;
1659 		do {
1660 			putchar(*cp++);
1661 		} while (*cp);
1662 	}
1663 	if (col == 0)
1664 		printf("       ");
1665 	printf("\"\n");
1666 }
1667 
1668 void
1669 ktrgenio(struct ktr_genio *ktr, int len)
1670 {
1671 	int datalen = len - sizeof (struct ktr_genio);
1672 	char *dp = (char *)ktr + sizeof (struct ktr_genio);
1673 	static int screenwidth = 0;
1674 	int i, binary;
1675 
1676 	printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
1677 		ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
1678 		datalen == 1 ? "" : "s");
1679 	if (suppressdata)
1680 		return;
1681 	if (screenwidth == 0) {
1682 		struct winsize ws;
1683 
1684 		if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
1685 		    ws.ws_col > 8)
1686 			screenwidth = ws.ws_col;
1687 		else
1688 			screenwidth = 80;
1689 	}
1690 	if (maxdata && datalen > maxdata)
1691 		datalen = maxdata;
1692 
1693 	for (i = 0, binary = 0; i < datalen && binary == 0; i++)  {
1694 		if (dp[i] >= 32 && dp[i] < 127)
1695 			continue;
1696 		if (dp[i] == 10 || dp[i] == 13 || dp[i] == 0 || dp[i] == 9)
1697 			continue;
1698 		binary = 1;
1699 	}
1700 	if (binary)
1701 		hexdump(dp, datalen, screenwidth);
1702 	else
1703 		visdump(dp, datalen, screenwidth);
1704 }
1705 
1706 void
1707 ktrpsig(struct ktr_psig *psig)
1708 {
1709 	const char *str;
1710 
1711 	print_signal(psig->signo);
1712 	if (psig->action == SIG_DFL) {
1713 		printf(" SIG_DFL");
1714 	} else {
1715 		printf(" caught handler=0x%lx mask=0x%x",
1716 		    (u_long)psig->action, psig->mask.__bits[0]);
1717 	}
1718 	printf(" code=");
1719 	str = sysdecode_sigcode(psig->signo, psig->code);
1720 	if (str != NULL)
1721 		printf("%s", str);
1722 	else
1723 		printf("<invalid=%#x>", psig->code);
1724 	putchar('\n');
1725 }
1726 
1727 void
1728 ktrcsw_old(struct ktr_csw_old *cs)
1729 {
1730 	printf("%s %s\n", cs->out ? "stop" : "resume",
1731 		cs->user ? "user" : "kernel");
1732 }
1733 
1734 void
1735 ktrcsw(struct ktr_csw *cs)
1736 {
1737 	printf("%s %s \"%s\"\n", cs->out ? "stop" : "resume",
1738 	    cs->user ? "user" : "kernel", cs->wmesg);
1739 }
1740 
1741 void
1742 ktruser(int len, void *p)
1743 {
1744 	unsigned char *cp;
1745 
1746 	if (sysdecode_utrace(stdout, p, len)) {
1747 		printf("\n");
1748 		return;
1749 	}
1750 
1751 	printf("%d ", len);
1752 	cp = p;
1753 	while (len--)
1754 		if (decimal)
1755 			printf(" %d", *cp++);
1756 		else
1757 			printf(" %02x", *cp++);
1758 	printf("\n");
1759 }
1760 
1761 void
1762 ktrcaprights(cap_rights_t *rightsp)
1763 {
1764 
1765 	printf("cap_rights_t ");
1766 	sysdecode_cap_rights(stdout, rightsp);
1767 	printf("\n");
1768 }
1769 
1770 static void
1771 ktrtimeval(struct timeval *tv)
1772 {
1773 
1774 	printf("{%ld, %ld}", (long)tv->tv_sec, tv->tv_usec);
1775 }
1776 
1777 void
1778 ktritimerval(struct itimerval *it)
1779 {
1780 
1781 	printf("itimerval { .interval = ");
1782 	ktrtimeval(&it->it_interval);
1783 	printf(", .value = ");
1784 	ktrtimeval(&it->it_value);
1785 	printf(" }\n");
1786 }
1787 
1788 void
1789 ktrsockaddr(struct sockaddr *sa)
1790 {
1791 /*
1792  TODO: Support additional address families
1793 	#include <netsmb/netbios.h>
1794 	struct sockaddr_nb	*nb;
1795 */
1796 	const char *str;
1797 	char addr[64];
1798 
1799 	/*
1800 	 * note: ktrstruct() has already verified that sa points to a
1801 	 * buffer at least sizeof(struct sockaddr) bytes long and exactly
1802 	 * sa->sa_len bytes long.
1803 	 */
1804 	printf("struct sockaddr { ");
1805 	str = sysdecode_sockaddr_family(sa->sa_family);
1806 	if (str != NULL)
1807 		printf("%s", str);
1808 	else
1809 		printf("<invalid=%d>", sa->sa_family);
1810 	printf(", ");
1811 
1812 #define check_sockaddr_len(n)					\
1813 	if (sa_##n.s##n##_len < sizeof(struct sockaddr_##n)) {	\
1814 		printf("invalid");				\
1815 		break;						\
1816 	}
1817 
1818 	switch(sa->sa_family) {
1819 	case AF_INET: {
1820 		struct sockaddr_in sa_in;
1821 
1822 		memset(&sa_in, 0, sizeof(sa_in));
1823 		memcpy(&sa_in, sa, sa->sa_len);
1824 		check_sockaddr_len(in);
1825 		inet_ntop(AF_INET, &sa_in.sin_addr, addr, sizeof addr);
1826 		printf("%s:%u", addr, ntohs(sa_in.sin_port));
1827 		break;
1828 	}
1829 	case AF_INET6: {
1830 		struct sockaddr_in6 sa_in6;
1831 
1832 		memset(&sa_in6, 0, sizeof(sa_in6));
1833 		memcpy(&sa_in6, sa, sa->sa_len);
1834 		check_sockaddr_len(in6);
1835 		getnameinfo((struct sockaddr *)&sa_in6, sizeof(sa_in6),
1836 		    addr, sizeof(addr), NULL, 0, NI_NUMERICHOST);
1837 		printf("[%s]:%u", addr, htons(sa_in6.sin6_port));
1838 		break;
1839 	}
1840 	case AF_UNIX: {
1841 		struct sockaddr_un sa_un;
1842 
1843 		memset(&sa_un, 0, sizeof(sa_un));
1844 		memcpy(&sa_un, sa, sa->sa_len);
1845 		printf("%.*s", (int)sizeof(sa_un.sun_path), sa_un.sun_path);
1846 		break;
1847 	}
1848 	default:
1849 		printf("unknown address family");
1850 	}
1851 	printf(" }\n");
1852 }
1853 
1854 void
1855 ktrstat(struct stat *statp)
1856 {
1857 	char mode[12], timestr[PATH_MAX + 4];
1858 	struct passwd *pwd;
1859 	struct group  *grp;
1860 	struct tm *tm;
1861 
1862 	/*
1863 	 * note: ktrstruct() has already verified that statp points to a
1864 	 * buffer exactly sizeof(struct stat) bytes long.
1865 	 */
1866 	printf("struct stat {");
1867 	printf("dev=%ju, ino=%ju, ",
1868 		(uintmax_t)statp->st_dev, (uintmax_t)statp->st_ino);
1869 	if (resolv == 0)
1870 		printf("mode=0%jo, ", (uintmax_t)statp->st_mode);
1871 	else {
1872 		strmode(statp->st_mode, mode);
1873 		printf("mode=%s, ", mode);
1874 	}
1875 	printf("nlink=%ju, ", (uintmax_t)statp->st_nlink);
1876 	if (resolv == 0) {
1877 		pwd = NULL;
1878 	} else {
1879 #ifdef WITH_CASPER
1880 		if (cappwd != NULL)
1881 			pwd = cap_getpwuid(cappwd, statp->st_uid);
1882 		else
1883 #endif
1884 			pwd = getpwuid(statp->st_uid);
1885 	}
1886 	if (pwd == NULL)
1887 		printf("uid=%ju, ", (uintmax_t)statp->st_uid);
1888 	else
1889 		printf("uid=\"%s\", ", pwd->pw_name);
1890 	if (resolv == 0) {
1891 		grp = NULL;
1892 	} else {
1893 #ifdef WITH_CASPER
1894 		if (capgrp != NULL)
1895 			grp = cap_getgrgid(capgrp, statp->st_gid);
1896 		else
1897 #endif
1898 			grp = getgrgid(statp->st_gid);
1899 	}
1900 	if (grp == NULL)
1901 		printf("gid=%ju, ", (uintmax_t)statp->st_gid);
1902 	else
1903 		printf("gid=\"%s\", ", grp->gr_name);
1904 	printf("rdev=%ju, ", (uintmax_t)statp->st_rdev);
1905 	printf("atime=");
1906 	if (resolv == 0)
1907 		printf("%jd", (intmax_t)statp->st_atim.tv_sec);
1908 	else {
1909 		tm = localtime(&statp->st_atim.tv_sec);
1910 		strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1911 		printf("\"%s\"", timestr);
1912 	}
1913 	if (statp->st_atim.tv_nsec != 0)
1914 		printf(".%09ld, ", statp->st_atim.tv_nsec);
1915 	else
1916 		printf(", ");
1917 	printf("mtime=");
1918 	if (resolv == 0)
1919 		printf("%jd", (intmax_t)statp->st_mtim.tv_sec);
1920 	else {
1921 		tm = localtime(&statp->st_mtim.tv_sec);
1922 		strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1923 		printf("\"%s\"", timestr);
1924 	}
1925 	if (statp->st_mtim.tv_nsec != 0)
1926 		printf(".%09ld, ", statp->st_mtim.tv_nsec);
1927 	else
1928 		printf(", ");
1929 	printf("ctime=");
1930 	if (resolv == 0)
1931 		printf("%jd", (intmax_t)statp->st_ctim.tv_sec);
1932 	else {
1933 		tm = localtime(&statp->st_ctim.tv_sec);
1934 		strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1935 		printf("\"%s\"", timestr);
1936 	}
1937 	if (statp->st_ctim.tv_nsec != 0)
1938 		printf(".%09ld, ", statp->st_ctim.tv_nsec);
1939 	else
1940 		printf(", ");
1941 	printf("birthtime=");
1942 	if (resolv == 0)
1943 		printf("%jd", (intmax_t)statp->st_birthtim.tv_sec);
1944 	else {
1945 		tm = localtime(&statp->st_birthtim.tv_sec);
1946 		strftime(timestr, sizeof(timestr), TIME_FORMAT, tm);
1947 		printf("\"%s\"", timestr);
1948 	}
1949 	if (statp->st_birthtim.tv_nsec != 0)
1950 		printf(".%09ld, ", statp->st_birthtim.tv_nsec);
1951 	else
1952 		printf(", ");
1953 	printf("size=%jd, blksize=%ju, blocks=%jd, flags=0x%x",
1954 		(uintmax_t)statp->st_size, (uintmax_t)statp->st_blksize,
1955 		(intmax_t)statp->st_blocks, statp->st_flags);
1956 	printf(" }\n");
1957 }
1958 
1959 void
1960 ktrstruct(char *buf, size_t buflen)
1961 {
1962 	char *name, *data;
1963 	size_t namelen, datalen;
1964 	int i;
1965 	cap_rights_t rights;
1966 	struct itimerval it;
1967 	struct stat sb;
1968 	struct sockaddr_storage ss;
1969 
1970 	for (name = buf, namelen = 0;
1971 	     namelen < buflen && name[namelen] != '\0';
1972 	     ++namelen)
1973 		/* nothing */;
1974 	if (namelen == buflen)
1975 		goto invalid;
1976 	if (name[namelen] != '\0')
1977 		goto invalid;
1978 	data = buf + namelen + 1;
1979 	datalen = buflen - namelen - 1;
1980 	if (datalen == 0)
1981 		goto invalid;
1982 	/* sanity check */
1983 	for (i = 0; i < (int)namelen; ++i)
1984 		if (!isalpha(name[i]))
1985 			goto invalid;
1986 	if (strcmp(name, "caprights") == 0) {
1987 		if (datalen != sizeof(cap_rights_t))
1988 			goto invalid;
1989 		memcpy(&rights, data, datalen);
1990 		ktrcaprights(&rights);
1991 	} else if (strcmp(name, "itimerval") == 0) {
1992 		if (datalen != sizeof(struct itimerval))
1993 			goto invalid;
1994 		memcpy(&it, data, datalen);
1995 		ktritimerval(&it);
1996 	} else if (strcmp(name, "stat") == 0) {
1997 		if (datalen != sizeof(struct stat))
1998 			goto invalid;
1999 		memcpy(&sb, data, datalen);
2000 		ktrstat(&sb);
2001 	} else if (strcmp(name, "sockaddr") == 0) {
2002 		if (datalen > sizeof(ss))
2003 			goto invalid;
2004 		memcpy(&ss, data, datalen);
2005 		if (datalen != ss.ss_len)
2006 			goto invalid;
2007 		ktrsockaddr((struct sockaddr *)&ss);
2008 	} else {
2009 		printf("unknown structure\n");
2010 	}
2011 	return;
2012 invalid:
2013 	printf("invalid record\n");
2014 }
2015 
2016 void
2017 ktrcapfail(struct ktr_cap_fail *ktr)
2018 {
2019 	switch (ktr->cap_type) {
2020 	case CAPFAIL_NOTCAPABLE:
2021 		/* operation on fd with insufficient capabilities */
2022 		printf("operation requires ");
2023 		sysdecode_cap_rights(stdout, &ktr->cap_needed);
2024 		printf(", descriptor holds ");
2025 		sysdecode_cap_rights(stdout, &ktr->cap_held);
2026 		break;
2027 	case CAPFAIL_INCREASE:
2028 		/* requested more capabilities than fd already has */
2029 		printf("attempt to increase capabilities from ");
2030 		sysdecode_cap_rights(stdout, &ktr->cap_held);
2031 		printf(" to ");
2032 		sysdecode_cap_rights(stdout, &ktr->cap_needed);
2033 		break;
2034 	case CAPFAIL_SYSCALL:
2035 		/* called restricted syscall */
2036 		printf("disallowed system call");
2037 		break;
2038 	case CAPFAIL_LOOKUP:
2039 		/* used ".." in strict-relative mode */
2040 		printf("restricted VFS lookup");
2041 		break;
2042 	default:
2043 		printf("unknown capability failure: ");
2044 		sysdecode_cap_rights(stdout, &ktr->cap_needed);
2045 		printf(" ");
2046 		sysdecode_cap_rights(stdout, &ktr->cap_held);
2047 		break;
2048 	}
2049 	printf("\n");
2050 }
2051 
2052 void
2053 ktrfault(struct ktr_fault *ktr)
2054 {
2055 
2056 	printf("0x%jx ", (uintmax_t)ktr->vaddr);
2057 	print_mask_arg(sysdecode_vmprot, ktr->type);
2058 	printf("\n");
2059 }
2060 
2061 void
2062 ktrfaultend(struct ktr_faultend *ktr)
2063 {
2064 	const char *str;
2065 
2066 	str = sysdecode_vmresult(ktr->result);
2067 	if (str != NULL)
2068 		printf("%s", str);
2069 	else
2070 		printf("<invalid=%d>", ktr->result);
2071 	printf("\n");
2072 }
2073 
2074 void
2075 usage(void)
2076 {
2077 	fprintf(stderr, "usage: kdump [-dEnlHRrSsTA] [-f trfile] "
2078 	    "[-m maxdata] [-p pid] [-t trstr]\n");
2079 	exit(1);
2080 }
2081