2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * @(#) Copyright (c) 1988, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)kdump.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.bin/kdump/kdump.c,v 1.29 2006/05/20 14:27:22 netchild Exp $
36 * $DragonFly: src/usr.bin/kdump/kdump.c,v 1.10 2008/01/07 01:35:43 corecode Exp $
39 #define _KERNEL_STRUCTURES
41 #include <sys/errno.h>
42 #include <sys/param.h>
43 #include <sys/errno.h>
46 #include <sys/ktrace.h>
47 #include <sys/ioctl.h>
48 #include <sys/ptrace.h>
57 #include "kdump_subr.h"
59 int timestamp, decimal, fancy = 1, tail, maxdata = 64;
61 char *tracefile = DEF_TRACEFILE;
62 struct ktr_header ktr_header;
64 #define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
66 main(int argc, char **argv)
68 int ch, col, ktrlen, size;
71 int trpoints = ALL_POINTS;
74 (void) setlocale(LC_CTYPE, "");
76 while ((ch = getopt(argc,argv,"f:djlm:np:RTt:")) != -1)
91 maxdata = atoi(optarg);
97 do_pid = strtoul(optarg, &cp, 0);
99 errx(1,"invalid number %s", optarg);
102 timestamp = 2; /* relative timestamp */
108 trpoints = getpoints(optarg);
110 errx(1, "unknown trace point in %s", optarg);
119 m = (void *)malloc(size = 1025);
121 errx(1, "%s", strerror(ENOMEM));
122 if (!freopen(tracefile, "r", stdin))
123 err(1, "%s", tracefile);
124 while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
125 if (trpoints & (1 << ktr_header.ktr_type) &&
126 (do_pid == -1 || ktr_header.ktr_pid == do_pid))
127 col = dumpheader(&ktr_header);
130 if ((ktrlen = ktr_header.ktr_len) < 0)
131 errx(1, "bogus length 0x%x", ktrlen);
133 m = (void *)realloc(m, ktrlen+1);
135 errx(1, "%s", strerror(ENOMEM));
138 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
139 errx(1, "data too short");
140 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
144 switch (ktr_header.ktr_type) {
146 ktrsyscall((struct ktr_syscall *)m);
149 ktrsysret((struct ktr_sysret *)m);
155 ktrgenio((struct ktr_genio *)m, ktrlen);
158 ktrpsig((struct ktr_psig *)m);
161 ktrcsw((struct ktr_csw *)m);
168 (void)fflush(stdout);
172 fread_tail(char *buf, int size, int num)
176 while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
183 dumpheader(struct ktr_header *kth)
185 static char unknown[64];
186 static struct timeval prevtime, temp;
190 switch (kth->ktr_type) {
213 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
217 if (kth->ktr_tid || (kth->ktr_flags & KTRH_THREADED) || fixedformat)
218 col = printf("%5d:%-4d", kth->ktr_pid, kth->ktr_tid);
220 col = printf("%5d", kth->ktr_pid);
221 col += printf(" %-8.*s ", MAXCOMLEN, kth->ktr_comm);
223 if (timestamp == 2) {
224 temp = kth->ktr_time;
225 timevalsub(&kth->ktr_time, &prevtime);
228 col += printf("%ld.%06ld ",
229 kth->ktr_time.tv_sec, kth->ktr_time.tv_usec);
231 col += printf("%s ", type);
235 #include <sys/syscall.h>
237 #include <sys/kern/syscalls.c>
239 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
241 static char *ptrace_ops[] = {
242 "PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U",
243 "PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE",
244 "PT_KILL", "PT_STEP", "PT_ATTACH", "PT_DETACH",
247 ktrsyscall(register struct ktr_syscall *ktr)
249 register narg = ktr->ktr_narg;
250 register register_t *ip;
253 if (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0)
254 (void)printf("[%d]", ktr->ktr_code);
256 (void)printf("%s", syscallnames[ktr->ktr_code]);
257 ip = &ktr->ktr_args[0];
262 #define print_number(i,n,c) do { \
264 (void)printf("%c%ld", c, (long)*i); \
266 (void)printf("%c%#lx", c, (long)*i); \
272 if (ktr->ktr_code == SYS_ioctl) {
274 print_number(ip,narg,c);
275 if ((cp = ioctlname(*ip)) != NULL)
276 (void)printf(",%s", cp);
279 (void)printf(",%ld", (long)*ip);
281 (void)printf(",%#lx ", (long)*ip);
286 } else if (ktr->ktr_code == SYS_access) {
287 print_number(ip,narg,c);
289 accessmodename ((int)*ip);
292 } else if (ktr->ktr_code == SYS_open) {
295 print_number(ip,narg,c);
299 flagsandmodename (flags, mode, decimal);
302 } else if (ktr->ktr_code == SYS_wait4) {
303 print_number(ip,narg,c);
304 print_number(ip,narg,c);
306 wait4optname ((int)*ip);
309 } else if (ktr->ktr_code == SYS_chmod ||
310 ktr->ktr_code == SYS_fchmod ||
311 ktr->ktr_code == SYS_lchmod) {
312 print_number(ip,narg,c);
317 } else if (ktr->ktr_code == SYS_mknod) {
318 print_number(ip,narg,c);
323 } else if (ktr->ktr_code == SYS_getfsstat) {
324 print_number(ip,narg,c);
325 print_number(ip,narg,c);
327 getfsstatflagsname ((int)*ip);
330 } else if (ktr->ktr_code == SYS_mount) {
331 print_number(ip,narg,c);
332 print_number(ip,narg,c);
334 mountflagsname ((int)*ip);
337 } else if (ktr->ktr_code == SYS_unmount) {
338 print_number(ip,narg,c);
340 mountflagsname ((int)*ip);
343 } else if (ktr->ktr_code == SYS_recvmsg ||
344 ktr->ktr_code == SYS_sendmsg) {
345 print_number(ip,narg,c);
346 print_number(ip,narg,c);
348 sendrecvflagsname ((int)*ip);
351 } else if (ktr->ktr_code == SYS_recvfrom ||
352 ktr->ktr_code == SYS_sendto) {
353 print_number(ip,narg,c);
354 print_number(ip,narg,c);
355 print_number(ip,narg,c);
357 sendrecvflagsname ((int)*ip);
360 } else if (ktr->ktr_code == SYS_chflags ||
361 ktr->ktr_code == SYS_fchflags) {
362 print_number(ip,narg,c);
367 } else if (ktr->ktr_code == SYS_kill) {
368 print_number(ip,narg,c);
373 } else if (ktr->ktr_code == SYS_reboot) {
375 rebootoptname((int)*ip);
378 } else if (ktr->ktr_code == SYS_umask) {
383 } else if (ktr->ktr_code == SYS_msync) {
384 print_number(ip,narg,c);
385 print_number(ip,narg,c);
387 msyncflagsname((int)*ip);
390 } else if (ktr->ktr_code == SYS_mmap) {
391 print_number(ip,narg,c);
392 print_number(ip,narg,c);
394 mmapprotname ((int)*ip);
398 mmapflagsname ((int)*ip);
401 } else if (ktr->ktr_code == SYS_mprotect) {
402 print_number(ip,narg,c);
403 print_number(ip,narg,c);
405 mmapprotname ((int)*ip);
408 } else if (ktr->ktr_code == SYS_madvise) {
409 print_number(ip,narg,c);
410 print_number(ip,narg,c);
412 madvisebehavname((int)*ip);
415 } else if (ktr->ktr_code == SYS_setpriority) {
416 print_number(ip,narg,c);
417 print_number(ip,narg,c);
422 } else if (ktr->ktr_code == SYS_fcntl) {
425 print_number(ip,narg,c);
429 fcntlcmdname(cmd, arg, decimal);
432 } else if (ktr->ktr_code == SYS_socket) {
434 sockdomainname((int)*ip);
438 socktypename((int)*ip);
442 } else if (ktr->ktr_code == SYS_setsockopt ||
443 ktr->ktr_code == SYS_getsockopt) {
444 print_number(ip,narg,c);
446 sockoptlevelname((int)*ip, decimal);
450 sockoptname((int)*ip);
453 } else if (ktr->ktr_code == SYS_lseek) {
454 print_number(ip,narg,c);
455 /* Hidden 'pad' argument, not in lseek(2) */
456 print_number(ip,narg,c);
457 print_number(ip,narg,c);
459 whencename ((int)*ip);
462 } else if (ktr->ktr_code == SYS_flock) {
463 print_number(ip,narg,c);
468 } else if (ktr->ktr_code == SYS_mkfifo ||
469 ktr->ktr_code == SYS_mkdir) {
470 print_number(ip,narg,c);
475 } else if (ktr->ktr_code == SYS_shutdown) {
476 print_number(ip,narg,c);
478 shutdownhowname((int)*ip);
481 } else if (ktr->ktr_code == SYS_socketpair) {
483 sockdomainname((int)*ip);
487 socktypename((int)*ip);
491 } else if (ktr->ktr_code == SYS_getrlimit ||
492 ktr->ktr_code == SYS_setrlimit) {
494 rlimitname((int)*ip);
498 } else if (ktr->ktr_code == SYS_quotactl) {
499 print_number(ip,narg,c);
500 quotactlname((int)*ip);
504 } else if (ktr->ktr_code == SYS_rtprio) {
506 rtprioname((int)*ip);
510 } else if (ktr->ktr_code == SYS___semctl) {
511 print_number(ip,narg,c);
512 print_number(ip,narg,c);
513 semctlname((int)*ip);
516 } else if (ktr->ktr_code == SYS_semget) {
517 print_number(ip,narg,c);
518 print_number(ip,narg,c);
519 semgetname((int)*ip);
522 } else if (ktr->ktr_code == SYS_msgctl) {
523 print_number(ip,narg,c);
524 shmctlname((int)*ip);
527 } else if (ktr->ktr_code == SYS_shmat) {
528 print_number(ip,narg,c);
529 print_number(ip,narg,c);
533 } else if (ktr->ktr_code == SYS_shmctl) {
534 print_number(ip,narg,c);
535 shmctlname((int)*ip);
538 } else if (ktr->ktr_code == SYS_minherit) {
539 print_number(ip,narg,c);
540 print_number(ip,narg,c);
541 minheritname((int)*ip);
544 } else if (ktr->ktr_code == SYS_rfork) {
550 } else if (ktr->ktr_code == SYS_lio_listio) {
552 lio_listioname((int)*ip);
556 } else if (ktr->ktr_code == SYS_mlockall) {
558 mlockallname((int)*ip);
561 } else if (ktr->ktr_code == SYS_sched_setscheduler) {
562 print_number(ip,narg,c);
563 schedpolicyname((int)*ip);
566 } else if (ktr->ktr_code == SYS_sched_get_priority_max ||
567 ktr->ktr_code == SYS_sched_get_priority_min) {
569 schedpolicyname((int)*ip);
572 } else if (ktr->ktr_code == SYS_sendfile) {
573 print_number(ip,narg,c);
574 print_number(ip,narg,c);
575 print_number(ip,narg,c);
576 print_number(ip,narg,c);
577 print_number(ip,narg,c);
578 print_number(ip,narg,c);
579 sendfileflagsname((int)*ip);
582 } else if (ktr->ktr_code == SYS_kldsym) {
583 print_number(ip,narg,c);
584 kldsymcmdname((int)*ip);
587 } else if (ktr->ktr_code == SYS_sigprocmask) {
589 sigprocmaskhowname((int)*ip);
593 } else if (ktr->ktr_code == SYS___acl_get_file ||
594 ktr->ktr_code == SYS___acl_set_file ||
595 ktr->ktr_code == SYS___acl_get_fd ||
596 ktr->ktr_code == SYS___acl_set_fd ||
597 ktr->ktr_code == SYS___acl_delete_file ||
598 ktr->ktr_code == SYS___acl_delete_fd ||
599 ktr->ktr_code == SYS___acl_aclcheck_file ||
600 ktr->ktr_code == SYS___acl_aclcheck_fd) {
601 print_number(ip,narg,c);
602 acltypename((int)*ip);
605 } else if (ktr->ktr_code == SYS_sigaction) {
611 } else if (ktr->ktr_code == SYS_extattrctl) {
612 print_number(ip,narg,c);
613 extattrctlname((int)*ip);
616 } else if (ktr->ktr_code == SYS_ptrace) {
617 if (*ip < sizeof(ptrace_ops) /
618 sizeof(ptrace_ops[0]) && *ip >= 0)
619 (void)printf("(%s", ptrace_ops[*ip]);
621 else if (*ip == PT_GETREGS)
622 (void)printf("(%s", "PT_GETREGS");
625 else if (*ip == PT_SETREGS)
626 (void)printf("(%s", "PT_SETREGS");
629 else if (*ip == PT_GETFPREGS)
630 (void)printf("(%s", "PT_GETFPREGS");
633 else if (*ip == PT_SETFPREGS)
634 (void)printf("(%s", "PT_SETFPREGS");
637 else if (*ip == PT_GETDBREGS)
638 (void)printf("(%s", "PT_GETDBREGS");
641 else if (*ip == PT_SETDBREGS)
642 (void)printf("(%s", "PT_SETDBREGS");
645 (void)printf("(%ld", (long)*ip);
652 print_number(ip,narg,c);
659 ktrsysret(struct ktr_sysret *ktr)
661 register register_t ret = ktr->ktr_retval;
662 register int error = ktr->ktr_error;
663 register int code = ktr->ktr_code;
665 if (code >= nsyscalls || code < 0)
666 (void)printf("[%d] ", code);
668 (void)printf("%s ", syscallnames[code]);
672 (void)printf("%d", ret);
673 if (ret < 0 || ret > 9)
674 (void)printf("/%#lx", (long)ret);
677 (void)printf("%ld", (long)ret);
679 (void)printf("%#lx", (long)ret);
681 } else if (error == ERESTART)
682 (void)printf("RESTART");
683 else if (error == EJUSTRETURN)
684 (void)printf("JUSTRETURN");
686 (void)printf("-1 errno %d", ktr->ktr_error);
688 (void)printf(" %s", strerror(ktr->ktr_error));
693 ktrnamei(char *cp, int len)
695 (void)printf("\"%.*s\"\n", len, cp);
698 ktrgenio(struct ktr_genio *ktr, int len)
700 register int datalen = len - sizeof (struct ktr_genio);
701 register char *dp = (char *)ktr + sizeof (struct ktr_genio);
703 register int col = 0;
706 static screenwidth = 0;
708 if (screenwidth == 0) {
711 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
713 screenwidth = ws.ws_col;
717 printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
718 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
719 datalen == 1 ? "" : "s");
720 if (maxdata && datalen > maxdata)
724 for (;datalen > 0; datalen--, dp++) {
725 (void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
728 * Keep track of printables and
729 * space chars (like fold(1)).
741 width = 8 - (col&07);
746 if (col + width > (screenwidth-2)) {
747 (void)printf("\\\n\t");
752 (void)putchar(*cp++);
757 (void)printf("\"\n");
760 char *signames[NSIG] = {
761 "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", /* 1 - 6 */
762 "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS", /* 7 - 12 */
763 "PIPE", "ALRM", "TERM", "URG", "STOP", "TSTP", /* 13 - 18 */
764 "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU", /* 19 - 24 */
765 "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1", /* 25 - 30 */
766 "USR2", NULL, /* 31 - 32 */
769 ktrpsig(struct ktr_psig *psig)
771 (void)printf("SIG%s ", signames[psig->signo]);
772 if (psig->action == SIG_DFL)
773 (void)printf("SIG_DFL\n");
775 (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
776 (u_long)psig->action, psig->mask, psig->code);
779 ktrcsw(struct ktr_csw *cs)
781 (void)printf("%s %s\n", cs->out ? "stop" : "resume",
782 cs->user ? "user" : "kernel");
785 ktruser(int len, unsigned char *p)
787 (void)printf("%d ", len);
789 (void)printf(" %02x", *p++);
796 (void)fprintf(stderr,
797 "usage: kdump [-dnlRT] [-f trfile] [-m maxdata] [-t [cnisuw]] [-p pid]\n");
801 timevalsub(struct timeval *t1, struct timeval *t2)
803 t1->tv_sec -= t2->tv_sec;
804 t1->tv_usec -= t2->tv_usec;
808 timevalfix(struct timeval *t1)
810 if (t1->tv_usec < 0) {
812 t1->tv_usec += 1000000;
814 if (t1->tv_usec >= 1000000) {
816 t1->tv_usec -= 1000000;