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 1.17 1999/12/29 05:05:33 peter Exp $
36 * $DragonFly: src/usr.bin/kdump/kdump.c,v 1.8 2007/05/07 15:43:31 dillon 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>
58 int timestamp, decimal, fancy = 1, tail, maxdata = 64;
60 char *tracefile = DEF_TRACEFILE;
61 struct ktr_header ktr_header;
63 #define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
65 main(int argc, char **argv)
67 int ch, col, ktrlen, size;
70 int trpoints = ALL_POINTS;
73 (void) setlocale(LC_CTYPE, "");
75 while ((ch = getopt(argc,argv,"f:djlm:np:RTt:")) != -1)
90 maxdata = atoi(optarg);
96 do_pid = strtoul(optarg, &cp, 0);
98 errx(1,"invalid number %s", optarg);
101 timestamp = 2; /* relative timestamp */
107 trpoints = getpoints(optarg);
109 errx(1, "unknown trace point in %s", optarg);
118 m = (void *)malloc(size = 1025);
120 errx(1, "%s", strerror(ENOMEM));
121 if (!freopen(tracefile, "r", stdin))
122 err(1, "%s", tracefile);
123 while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
124 if (trpoints & (1 << ktr_header.ktr_type) &&
125 (do_pid == -1 || ktr_header.ktr_pid == do_pid))
126 col = dumpheader(&ktr_header);
129 if ((ktrlen = ktr_header.ktr_len) < 0)
130 errx(1, "bogus length 0x%x", ktrlen);
132 m = (void *)realloc(m, ktrlen+1);
134 errx(1, "%s", strerror(ENOMEM));
137 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
138 errx(1, "data too short");
139 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
143 switch (ktr_header.ktr_type) {
145 ktrsyscall((struct ktr_syscall *)m);
148 ktrsysret((struct ktr_sysret *)m);
154 ktrgenio((struct ktr_genio *)m, ktrlen);
157 ktrpsig((struct ktr_psig *)m);
160 ktrcsw((struct ktr_csw *)m);
167 (void)fflush(stdout);
171 fread_tail(char *buf, int size, int num)
175 while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
182 dumpheader(struct ktr_header *kth)
184 static char unknown[64];
185 static struct timeval prevtime, temp;
189 switch (kth->ktr_type) {
212 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
216 if (kth->ktr_tid || (kth->ktr_flags & KTRH_THREADED) || fixedformat)
217 col = printf("%5d:%-4d", kth->ktr_pid, kth->ktr_tid);
219 col = printf("%5d", kth->ktr_pid);
220 col += printf(" %-8.*s ", MAXCOMLEN, kth->ktr_comm);
222 if (timestamp == 2) {
223 temp = kth->ktr_time;
224 timevalsub(&kth->ktr_time, &prevtime);
227 col += printf("%ld.%06ld ",
228 kth->ktr_time.tv_sec, kth->ktr_time.tv_usec);
230 col += printf("%s ", type);
234 #include <sys/syscall.h>
236 #include <sys/kern/syscalls.c>
238 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
240 static char *ptrace_ops[] = {
241 "PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U",
242 "PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE",
243 "PT_KILL", "PT_STEP", "PT_ATTACH", "PT_DETACH",
246 ktrsyscall(register struct ktr_syscall *ktr)
248 register narg = ktr->ktr_narg;
249 register register_t *ip;
252 if (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0)
253 (void)printf("[%d]", ktr->ktr_code);
255 (void)printf("%s", syscallnames[ktr->ktr_code]);
256 ip = &ktr->ktr_args[0];
260 if (ktr->ktr_code == SYS_ioctl) {
263 (void)printf("(%ld", (long)*ip);
265 (void)printf("(%#lx", (long)*ip);
268 if ((cp = ioctlname(*ip)) != NULL)
269 (void)printf(",%s", cp);
272 (void)printf(",%ld", (long)*ip);
274 (void)printf(",%#lx ", (long)*ip);
279 } else if (ktr->ktr_code == SYS_ptrace) {
280 if (*ip < sizeof(ptrace_ops) /
281 sizeof(ptrace_ops[0]) && *ip >= 0)
282 (void)printf("(%s", ptrace_ops[*ip]);
284 else if (*ip == PT_GETREGS)
285 (void)printf("(%s", "PT_GETREGS");
288 else if (*ip == PT_SETREGS)
289 (void)printf("(%s", "PT_SETREGS");
292 else if (*ip == PT_GETFPREGS)
293 (void)printf("(%s", "PT_GETFPREGS");
296 else if (*ip == PT_SETFPREGS)
297 (void)printf("(%s", "PT_SETFPREGS");
300 else if (*ip == PT_GETDBREGS)
301 (void)printf("(%s", "PT_GETDBREGS");
304 else if (*ip == PT_SETDBREGS)
305 (void)printf("(%s", "PT_SETDBREGS");
308 (void)printf("(%ld", (long)*ip);
316 (void)printf("%c%ld", c, (long)*ip);
318 (void)printf("%c%#lx", c, (long)*ip);
328 ktrsysret(struct ktr_sysret *ktr)
330 register register_t ret = ktr->ktr_retval;
331 register int error = ktr->ktr_error;
332 register int code = ktr->ktr_code;
334 if (code >= nsyscalls || code < 0)
335 (void)printf("[%d] ", code);
337 (void)printf("%s ", syscallnames[code]);
341 (void)printf("%d", ret);
342 if (ret < 0 || ret > 9)
343 (void)printf("/%#lx", (long)ret);
346 (void)printf("%ld", (long)ret);
348 (void)printf("%#lx", (long)ret);
350 } else if (error == ERESTART)
351 (void)printf("RESTART");
352 else if (error == EJUSTRETURN)
353 (void)printf("JUSTRETURN");
355 (void)printf("-1 errno %d", ktr->ktr_error);
357 (void)printf(" %s", strerror(ktr->ktr_error));
362 ktrnamei(char *cp, int len)
364 (void)printf("\"%.*s\"\n", len, cp);
367 ktrgenio(struct ktr_genio *ktr, int len)
369 register int datalen = len - sizeof (struct ktr_genio);
370 register char *dp = (char *)ktr + sizeof (struct ktr_genio);
372 register int col = 0;
375 static screenwidth = 0;
377 if (screenwidth == 0) {
380 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
382 screenwidth = ws.ws_col;
386 printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
387 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
388 datalen == 1 ? "" : "s");
389 if (maxdata && datalen > maxdata)
393 for (;datalen > 0; datalen--, dp++) {
394 (void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
397 * Keep track of printables and
398 * space chars (like fold(1)).
410 width = 8 - (col&07);
415 if (col + width > (screenwidth-2)) {
416 (void)printf("\\\n\t");
421 (void)putchar(*cp++);
426 (void)printf("\"\n");
430 "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", /* 1 - 6 */
431 "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS", /* 7 - 12 */
432 "PIPE", "ALRM", "TERM", "URG", "STOP", "TSTP", /* 13 - 18 */
433 "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU", /* 19 - 24 */
434 "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1", /* 25 - 30 */
435 "USR2", NULL, /* 31 - 32 */
438 ktrpsig(struct ktr_psig *psig)
440 (void)printf("SIG%s ", signames[psig->signo]);
441 if (psig->action == SIG_DFL)
442 (void)printf("SIG_DFL\n");
444 (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
445 (u_long)psig->action, psig->mask, psig->code);
448 ktrcsw(struct ktr_csw *cs)
450 (void)printf("%s %s\n", cs->out ? "stop" : "resume",
451 cs->user ? "user" : "kernel");
454 ktruser(int len, unsigned char *p)
456 (void)printf("%d ", len);
458 (void)printf(" %02x", *p++);
465 (void)fprintf(stderr,
466 "usage: kdump [-dnlRT] [-f trfile] [-m maxdata] [-t [cnisuw]] [-p pid]\n");
470 timevalsub(struct timeval *t1, struct timeval *t2)
472 t1->tv_sec -= t2->tv_sec;
473 t1->tv_usec -= t2->tv_usec;
477 timevalfix(struct timeval *t1)
479 if (t1->tv_usec < 0) {
481 t1->tv_usec += 1000000;
483 if (t1->tv_usec >= 1000000) {
485 t1->tv_usec -= 1000000;