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 1.7 2006/07/20 22:57:47 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>
58 int timestamp
, decimal
, fancy
= 1, tail
, maxdata
= 64;
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
)
66 int ch
, col
, ktrlen
, size
;
69 int trpoints
= ALL_POINTS
;
72 (void) setlocale(LC_CTYPE
, "");
74 while ((ch
= getopt(argc
,argv
,"f:dlm:np:RTt:")) != -1)
86 maxdata
= atoi(optarg
);
92 do_pid
= strtoul(optarg
, &cp
, 0);
94 errx(1,"invalid number %s", optarg
);
97 timestamp
= 2; /* relative timestamp */
103 trpoints
= getpoints(optarg
);
105 errx(1, "unknown trace point in %s", optarg
);
114 m
= (void *)malloc(size
= 1025);
116 errx(1, "%s", strerror(ENOMEM
));
117 if (!freopen(tracefile
, "r", stdin
))
118 err(1, "%s", tracefile
);
119 while (fread_tail(&ktr_header
, sizeof(struct ktr_header
), 1)) {
120 if (trpoints
& (1 << ktr_header
.ktr_type
) &&
121 (do_pid
== -1 || ktr_header
.ktr_pid
== do_pid
))
122 col
= dumpheader(&ktr_header
);
125 if ((ktrlen
= ktr_header
.ktr_len
) < 0)
126 errx(1, "bogus length 0x%x", ktrlen
);
128 m
= (void *)realloc(m
, ktrlen
+1);
130 errx(1, "%s", strerror(ENOMEM
));
133 if (ktrlen
&& fread_tail(m
, ktrlen
, 1) == 0)
134 errx(1, "data too short");
135 if ((trpoints
& (1<<ktr_header
.ktr_type
)) == 0)
139 switch (ktr_header
.ktr_type
) {
141 ktrsyscall((struct ktr_syscall
*)m
);
144 ktrsysret((struct ktr_sysret
*)m
);
150 ktrgenio((struct ktr_genio
*)m
, ktrlen
);
153 ktrpsig((struct ktr_psig
*)m
);
156 ktrcsw((struct ktr_csw
*)m
);
163 (void)fflush(stdout
);
167 fread_tail(char *buf
, int size
, int num
)
171 while ((i
= fread(buf
, size
, num
, stdin
)) == 0 && tail
) {
178 dumpheader(struct ktr_header
*kth
)
180 static char unknown
[64];
181 static struct timeval prevtime
, temp
;
185 switch (kth
->ktr_type
) {
208 (void)sprintf(unknown
, "UNKNOWN(%d)", kth
->ktr_type
);
212 col
= printf("%6d %-8.*s ", kth
->ktr_pid
, MAXCOMLEN
, kth
->ktr_comm
);
214 if (timestamp
== 2) {
215 temp
= kth
->ktr_time
;
216 timevalsub(&kth
->ktr_time
, &prevtime
);
219 col
+= printf("%ld.%06ld ",
220 kth
->ktr_time
.tv_sec
, kth
->ktr_time
.tv_usec
);
222 col
+= printf("%s ", type
);
226 #include <sys/syscall.h>
228 #include <sys/kern/syscalls.c>
230 int nsyscalls
= sizeof (syscallnames
) / sizeof (syscallnames
[0]);
232 static char *ptrace_ops
[] = {
233 "PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U",
234 "PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE",
235 "PT_KILL", "PT_STEP", "PT_ATTACH", "PT_DETACH",
238 ktrsyscall(register struct ktr_syscall
*ktr
)
240 register narg
= ktr
->ktr_narg
;
241 register register_t
*ip
;
244 if (ktr
->ktr_code
>= nsyscalls
|| ktr
->ktr_code
< 0)
245 (void)printf("[%d]", ktr
->ktr_code
);
247 (void)printf("%s", syscallnames
[ktr
->ktr_code
]);
248 ip
= &ktr
->ktr_args
[0];
252 if (ktr
->ktr_code
== SYS_ioctl
) {
255 (void)printf("(%ld", (long)*ip
);
257 (void)printf("(%#lx", (long)*ip
);
260 if ((cp
= ioctlname(*ip
)) != NULL
)
261 (void)printf(",%s", cp
);
264 (void)printf(",%ld", (long)*ip
);
266 (void)printf(",%#lx ", (long)*ip
);
271 } else if (ktr
->ktr_code
== SYS_ptrace
) {
272 if (*ip
< sizeof(ptrace_ops
) /
273 sizeof(ptrace_ops
[0]) && *ip
>= 0)
274 (void)printf("(%s", ptrace_ops
[*ip
]);
276 else if (*ip
== PT_GETREGS
)
277 (void)printf("(%s", "PT_GETREGS");
280 else if (*ip
== PT_SETREGS
)
281 (void)printf("(%s", "PT_SETREGS");
284 else if (*ip
== PT_GETFPREGS
)
285 (void)printf("(%s", "PT_GETFPREGS");
288 else if (*ip
== PT_SETFPREGS
)
289 (void)printf("(%s", "PT_SETFPREGS");
292 else if (*ip
== PT_GETDBREGS
)
293 (void)printf("(%s", "PT_GETDBREGS");
296 else if (*ip
== PT_SETDBREGS
)
297 (void)printf("(%s", "PT_SETDBREGS");
300 (void)printf("(%ld", (long)*ip
);
308 (void)printf("%c%ld", c
, (long)*ip
);
310 (void)printf("%c%#lx", c
, (long)*ip
);
320 ktrsysret(struct ktr_sysret
*ktr
)
322 register register_t ret
= ktr
->ktr_retval
;
323 register int error
= ktr
->ktr_error
;
324 register int code
= ktr
->ktr_code
;
326 if (code
>= nsyscalls
|| code
< 0)
327 (void)printf("[%d] ", code
);
329 (void)printf("%s ", syscallnames
[code
]);
333 (void)printf("%d", ret
);
334 if (ret
< 0 || ret
> 9)
335 (void)printf("/%#lx", (long)ret
);
338 (void)printf("%ld", (long)ret
);
340 (void)printf("%#lx", (long)ret
);
342 } else if (error
== ERESTART
)
343 (void)printf("RESTART");
344 else if (error
== EJUSTRETURN
)
345 (void)printf("JUSTRETURN");
347 (void)printf("-1 errno %d", ktr
->ktr_error
);
349 (void)printf(" %s", strerror(ktr
->ktr_error
));
354 ktrnamei(char *cp
, int len
)
356 (void)printf("\"%.*s\"\n", len
, cp
);
359 ktrgenio(struct ktr_genio
*ktr
, int len
)
361 register int datalen
= len
- sizeof (struct ktr_genio
);
362 register char *dp
= (char *)ktr
+ sizeof (struct ktr_genio
);
364 register int col
= 0;
367 static screenwidth
= 0;
369 if (screenwidth
== 0) {
372 if (fancy
&& ioctl(fileno(stderr
), TIOCGWINSZ
, &ws
) != -1 &&
374 screenwidth
= ws
.ws_col
;
378 printf("fd %d %s %d byte%s\n", ktr
->ktr_fd
,
379 ktr
->ktr_rw
== UIO_READ
? "read" : "wrote", datalen
,
380 datalen
== 1 ? "" : "s");
381 if (maxdata
&& datalen
> maxdata
)
385 for (;datalen
> 0; datalen
--, dp
++) {
386 (void) vis(visbuf
, *dp
, VIS_CSTYLE
, *(dp
+1));
389 * Keep track of printables and
390 * space chars (like fold(1)).
402 width
= 8 - (col
&07);
407 if (col
+ width
> (screenwidth
-2)) {
408 (void)printf("\\\n\t");
413 (void)putchar(*cp
++);
418 (void)printf("\"\n");
422 "NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", /* 1 - 6 */
423 "EMT", "FPE", "KILL", "BUS", "SEGV", "SYS", /* 7 - 12 */
424 "PIPE", "ALRM", "TERM", "URG", "STOP", "TSTP", /* 13 - 18 */
425 "CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU", /* 19 - 24 */
426 "XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1", /* 25 - 30 */
427 "USR2", NULL
, /* 31 - 32 */
430 ktrpsig(struct ktr_psig
*psig
)
432 (void)printf("SIG%s ", signames
[psig
->signo
]);
433 if (psig
->action
== SIG_DFL
)
434 (void)printf("SIG_DFL\n");
436 (void)printf("caught handler=0x%lx mask=0x%x code=0x%x\n",
437 (u_long
)psig
->action
, psig
->mask
, psig
->code
);
440 ktrcsw(struct ktr_csw
*cs
)
442 (void)printf("%s %s\n", cs
->out
? "stop" : "resume",
443 cs
->user
? "user" : "kernel");
446 ktruser(int len
, unsigned char *p
)
448 (void)printf("%d ", len
);
450 (void)printf(" %02x", *p
++);
457 (void)fprintf(stderr
,
458 "usage: kdump [-dnlRT] [-f trfile] [-m maxdata] [-t [cnisuw]] [-p pid]\n");
462 timevalsub(struct timeval
*t1
, struct timeval
*t2
)
464 t1
->tv_sec
-= t2
->tv_sec
;
465 t1
->tv_usec
-= t2
->tv_usec
;
469 timevalfix(struct timeval
*t1
)
471 if (t1
->tv_usec
< 0) {
473 t1
->tv_usec
+= 1000000;
475 if (t1
->tv_usec
>= 1000000) {
477 t1
->tv_usec
-= 1000000;