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 1.4 2003/10/04 20:36:46 hmp 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;
59 char *tracefile = DEF_TRACEFILE;
60 struct ktr_header ktr_header;
62 #define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
64 main(int argc, char **argv)
68 int trpoints = ALL_POINTS;
70 (void) setlocale(LC_CTYPE, "");
72 while ((ch = getopt(argc,argv,"f:dlm:nRTt:")) != -1)
84 maxdata = atoi(optarg);
90 timestamp = 2; /* relative timestamp */
96 trpoints = getpoints(optarg);
98 errx(1, "unknown trace point in %s", optarg);
107 m = (void *)malloc(size = 1025);
109 errx(1, "%s", strerror(ENOMEM));
110 if (!freopen(tracefile, "r", stdin))
111 err(1, "%s", tracefile);
112 while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
113 if (trpoints & (1<<ktr_header.ktr_type))
114 dumpheader(&ktr_header);
115 if ((ktrlen = ktr_header.ktr_len) < 0)
116 errx(1, "bogus length 0x%x", ktrlen);
118 m = (void *)realloc(m, ktrlen+1);
120 errx(1, "%s", strerror(ENOMEM));
123 if (ktrlen && fread_tail(m, ktrlen, 1) == 0)
124 errx(1, "data too short");
125 if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
127 switch (ktr_header.ktr_type) {
129 ktrsyscall((struct ktr_syscall *)m);
132 ktrsysret((struct ktr_sysret *)m);
138 ktrgenio((struct ktr_genio *)m, ktrlen);
141 ktrpsig((struct ktr_psig *)m);
144 ktrcsw((struct ktr_csw *)m);
151 (void)fflush(stdout);
155 fread_tail(char *buf, int size, int num)
159 while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
166 dumpheader(struct ktr_header *kth)
168 static char unknown[64];
169 static struct timeval prevtime, temp;
172 switch (kth->ktr_type) {
195 (void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
199 (void)printf("%6d %-8.*s ", kth->ktr_pid, MAXCOMLEN, kth->ktr_comm);
201 if (timestamp == 2) {
202 temp = kth->ktr_time;
203 timevalsub(&kth->ktr_time, &prevtime);
206 (void)printf("%ld.%06ld ",
207 kth->ktr_time.tv_sec, kth->ktr_time.tv_usec);
209 (void)printf("%s ", type);
212 #include <sys/syscall.h>
214 #include <sys/kern/syscalls.c>
216 int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
218 static char *ptrace_ops[] = {
219 "PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U",
220 "PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE",
221 "PT_KILL", "PT_STEP", "PT_ATTACH", "PT_DETACH",
224 ktrsyscall(register struct ktr_syscall *ktr)
226 register narg = ktr->ktr_narg;
227 register register_t *ip;
230 if (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0)
231 (void)printf("[%d]", ktr->ktr_code);
233 (void)printf("%s", syscallnames[ktr->ktr_code]);
234 ip = &ktr->ktr_args[0];
238 if (ktr->ktr_code == SYS_ioctl) {
241 (void)printf("(%ld", (long)*ip);
243 (void)printf("(%#lx", (long)*ip);
246 if ((cp = ioctlname(*ip)) != NULL)
247 (void)printf(",%s", cp);
250 (void)printf(",%ld", (long)*ip);
252 (void)printf(",%#lx ", (long)*ip);
257 } else if (ktr->ktr_code == SYS_ptrace) {
258 if (*ip < sizeof(ptrace_ops) /
259 sizeof(ptrace_ops[0]) && *ip >= 0)
260 (void)printf("(%s", ptrace_ops[*ip]);
262 else if (*ip == PT_GETREGS)
263 (void)printf("(%s", "PT_GETREGS");
266 else if (*ip == PT_SETREGS)
267 (void)printf("(%s", "PT_SETREGS");
270 else if (*ip == PT_GETFPREGS)
271 (void)printf("(%s", "PT_GETFPREGS");
274 else if (*ip == PT_SETFPREGS)
275 (void)printf("(%s", "PT_SETFPREGS");
278 else if (*ip == PT_GETDBREGS)
279 (void)printf("(%s", "PT_GETDBREGS");
282 else if (*ip == PT_SETDBREGS)
283 (void)printf("(%s", "PT_SETDBREGS");
286 (void)printf("(%ld", (long)*ip);
294 (void)printf("%c%ld", c, (long)*ip);
296 (void)printf("%c%#lx", c, (long)*ip);
306 ktrsysret(struct ktr_sysret *ktr)
308 register register_t ret = ktr->ktr_retval;
309 register int error = ktr->ktr_error;
310 register int code = ktr->ktr_code;
312 if (code >= nsyscalls || code < 0)
313 (void)printf("[%d] ", code);
315 (void)printf("%s ", syscallnames[code]);
319 (void)printf("%d", ret);
320 if (ret < 0 || ret > 9)
321 (void)printf("/%#lx", (long)ret);
324 (void)printf("%ld", (long)ret);
326 (void)printf("%#lx", (long)ret);
328 } else if (error == ERESTART)
329 (void)printf("RESTART");
330 else if (error == EJUSTRETURN)
331 (void)printf("JUSTRETURN");
333 (void)printf("-1 errno %d", ktr->ktr_error);
335 (void)printf(" %s", strerror(ktr->ktr_error));
340 ktrnamei(char *cp, int len)
342 (void)printf("\"%.*s\"\n", len, cp);
345 ktrgenio(struct ktr_genio *ktr, int len)
347 register int datalen = len - sizeof (struct ktr_genio);
348 register char *dp = (char *)ktr + sizeof (struct ktr_genio);
350 register int col = 0;
353 static screenwidth = 0;
355 if (screenwidth == 0) {
358 if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
360 screenwidth = ws.ws_col;
364 printf("fd %d %s %d byte%s\n", ktr->ktr_fd,
365 ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen,
366 datalen == 1 ? "" : "s");
367 if (maxdata && datalen > maxdata)
371 for (;datalen > 0; datalen--, dp++) {
372 (void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
375 * Keep track of printables and
376 * space chars (like fold(1)).
388 width = 8 - (col&07);
393 if (col + width > (screenwidth-2)) {
394 (void)printf("\\\n\t");
399 (void)putchar(*cp++);
404 (void)printf("\"\n");
408 "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", /* 1 - 6 */
409 "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS", /* 7 - 12 */
410 "PIPE", "ALRM", "TERM", "URG", "STOP", "TSTP", /* 13 - 18 */
411 "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU", /* 19 - 24 */
412 "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1", /* 25 - 30 */
413 "USR2", NULL, /* 31 - 32 */
416 ktrpsig(struct ktr_psig *psig)
418 (void)printf("SIG%s ", signames[psig->signo]);
419 if (psig->action == SIG_DFL)
420 (void)printf("SIG_DFL\n");
422 (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
423 (u_long)psig->action, psig->mask, psig->code);
426 ktrcsw(struct ktr_csw *cs)
428 (void)printf("%s %s\n", cs->out ? "stop" : "resume",
429 cs->user ? "user" : "kernel");
432 ktruser(int len, unsigned char *p)
434 (void)printf("%d ", len);
436 (void)printf(" %02x", *p++);
443 (void)fprintf(stderr,
444 "usage: kdump [-dnlRT] [-f trfile] [-m maxdata] [-t [cnisuw]]\n");