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BSD 4_4 release
[unix-history] / usr / src / usr.bin / kdump / kdump.c
/*-
* Copyright (c) 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1988, 1993\n\
The Regents of the University of California. All rights reserved.\n";
#endif /* not lint */
#ifndef lint
static char sccsid[] = "@(#)kdump.c 8.1 (Berkeley) 6/6/93";
#endif /* not lint */
#include <sys/param.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <sys/ktrace.h>
#include <sys/ioctl.h>
#include <sys/ptrace.h>
#define KERNEL
#include <sys/errno.h>
#undef KERNEL
#include <vis.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "ktrace.h"
int timestamp, decimal, fancy = 1, tail, maxdata;
char *tracefile = DEF_TRACEFILE;
struct ktr_header ktr_header;
#define eqs(s1, s2) (strcmp((s1), (s2)) == 0)
main(argc, argv)
int argc;
char *argv[];
{
extern int optind;
extern char *optarg;
int ch, ktrlen, size;
register void *m;
int trpoints = ALL_POINTS;
while ((ch = getopt(argc,argv,"f:dlm:nRTt:")) != EOF)
switch((char)ch) {
case 'f':
tracefile = optarg;
break;
case 'd':
decimal = 1;
break;
case 'l':
tail = 1;
break;
case 'm':
maxdata = atoi(optarg);
break;
case 'n':
fancy = 0;
break;
case 'R':
timestamp = 2; /* relative timestamp */
break;
case 'T':
timestamp = 1;
break;
case 't':
trpoints = getpoints(optarg);
if (trpoints < 0) {
(void)fprintf(stderr,
"kdump: unknown trace point in %s\n",
optarg);
exit(1);
}
break;
default:
usage();
}
argv += optind;
argc -= optind;
if (argc > 1)
usage();
m = (void *)malloc(size = 1025);
if (m == NULL) {
(void)fprintf(stderr, "kdump: %s.\n", strerror(ENOMEM));
exit(1);
}
if (!freopen(tracefile, "r", stdin)) {
(void)fprintf(stderr,
"kdump: %s: %s.\n", tracefile, strerror(errno));
exit(1);
}
while (fread_tail(&ktr_header, sizeof(struct ktr_header), 1)) {
if (trpoints & (1<<ktr_header.ktr_type))
dumpheader(&ktr_header);
if ((ktrlen = ktr_header.ktr_len) < 0) {
(void)fprintf(stderr,
"kdump: bogus length 0x%x\n", ktrlen);
exit(1);
}
if (ktrlen > size) {
m = (void *)realloc(m, ktrlen+1);
if (m == NULL) {
(void)fprintf(stderr,
"kdump: %s.\n", strerror(ENOMEM));
exit(1);
}
size = ktrlen;
}
if (ktrlen && fread_tail(m, ktrlen, 1) == 0) {
(void)fprintf(stderr, "kdump: data too short.\n");
exit(1);
}
if ((trpoints & (1<<ktr_header.ktr_type)) == 0)
continue;
switch (ktr_header.ktr_type) {
case KTR_SYSCALL:
ktrsyscall((struct ktr_syscall *)m);
break;
case KTR_SYSRET:
ktrsysret((struct ktr_sysret *)m);
break;
case KTR_NAMEI:
ktrnamei(m, ktrlen);
break;
case KTR_GENIO:
ktrgenio((struct ktr_genio *)m, ktrlen);
break;
case KTR_PSIG:
ktrpsig((struct ktr_psig *)m);
break;
case KTR_CSW:
ktrcsw((struct ktr_csw *)m);
break;
}
if (tail)
(void)fflush(stdout);
}
}
fread_tail(buf, size, num)
char *buf;
int num, size;
{
int i;
while ((i = fread(buf, size, num, stdin)) == 0 && tail) {
(void)sleep(1);
clearerr(stdin);
}
return (i);
}
dumpheader(kth)
struct ktr_header *kth;
{
static char unknown[64];
static struct timeval prevtime, temp;
char *type;
switch (kth->ktr_type) {
case KTR_SYSCALL:
type = "CALL";
break;
case KTR_SYSRET:
type = "RET ";
break;
case KTR_NAMEI:
type = "NAMI";
break;
case KTR_GENIO:
type = "GIO ";
break;
case KTR_PSIG:
type = "PSIG";
break;
case KTR_CSW:
type = "CSW";
break;
default:
(void)sprintf(unknown, "UNKNOWN(%d)", kth->ktr_type);
type = unknown;
}
(void)printf("%6d %-8s ", kth->ktr_pid, kth->ktr_comm);
if (timestamp) {
if (timestamp == 2) {
temp = kth->ktr_time;
timevalsub(&kth->ktr_time, &prevtime);
prevtime = temp;
}
(void)printf("%ld.%06ld ",
kth->ktr_time.tv_sec, kth->ktr_time.tv_usec);
}
(void)printf("%s ", type);
}
#include <sys/syscall.h>
#define KTRACE
#include "/sys/kern/syscalls.c"
#undef KTRACE
int nsyscalls = sizeof (syscallnames) / sizeof (syscallnames[0]);
static char *ptrace_ops[] = {
"PT_TRACE_ME", "PT_READ_I", "PT_READ_D", "PT_READ_U",
"PT_WRITE_I", "PT_WRITE_D", "PT_WRITE_U", "PT_CONTINUE",
"PT_KILL", "PT_STEP",
};
ktrsyscall(ktr)
register struct ktr_syscall *ktr;
{
register narg = ktr->ktr_narg;
register int *ip;
char *ioctlname();
if (ktr->ktr_code >= nsyscalls || ktr->ktr_code < 0)
(void)printf("[%d]", ktr->ktr_code);
else
(void)printf("%s", syscallnames[ktr->ktr_code]);
ip = (int *)((char *)ktr + sizeof(struct ktr_syscall));
if (narg) {
char c = '(';
if (fancy) {
if (ktr->ktr_code == SYS_ioctl) {
char *cp;
if (decimal)
(void)printf("(%d", *ip);
else
(void)printf("(%#x", *ip);
ip++;
narg--;
if ((cp = ioctlname(*ip)) != NULL)
(void)printf(",%s", cp);
else {
if (decimal)
(void)printf(",%d", *ip);
else
(void)printf(",%#x ", *ip);
}
c = ',';
ip++;
narg--;
} else if (ktr->ktr_code == SYS_ptrace) {
if (*ip <= PT_STEP && *ip >= 0)
(void)printf("(%s", ptrace_ops[*ip]);
else
(void)printf("(%d", *ip);
c = ',';
ip++;
narg--;
}
}
while (narg) {
if (decimal)
(void)printf("%c%d", c, *ip);
else
(void)printf("%c%#x", c, *ip);
c = ',';
ip++;
narg--;
}
(void)putchar(')');
}
(void)putchar('\n');
}
ktrsysret(ktr)
struct ktr_sysret *ktr;
{
register int ret = ktr->ktr_retval;
register int error = ktr->ktr_error;
register int code = ktr->ktr_code;
if (code >= nsyscalls || code < 0)
(void)printf("[%d] ", code);
else
(void)printf("%s ", syscallnames[code]);
if (error == 0) {
if (fancy) {
(void)printf("%d", ret);
if (ret < 0 || ret > 9)
(void)printf("/%#x", ret);
} else {
if (decimal)
(void)printf("%d", ret);
else
(void)printf("%#x", ret);
}
} else if (error == ERESTART)
(void)printf("RESTART");
else if (error == EJUSTRETURN)
(void)printf("JUSTRETURN");
else {
(void)printf("-1 errno %d", ktr->ktr_error);
if (fancy)
(void)printf(" %s", strerror(ktr->ktr_error));
}
(void)putchar('\n');
}
ktrnamei(cp, len)
char *cp;
{
(void)printf("\"%.*s\"\n", len, cp);
}
ktrgenio(ktr, len)
struct ktr_genio *ktr;
{
register int datalen = len - sizeof (struct ktr_genio);
register char *dp = (char *)ktr + sizeof (struct ktr_genio);
register char *cp;
register int col = 0;
register width;
char visbuf[5];
static screenwidth = 0;
if (screenwidth == 0) {
struct winsize ws;
if (fancy && ioctl(fileno(stderr), TIOCGWINSZ, &ws) != -1 &&
ws.ws_col > 8)
screenwidth = ws.ws_col;
else
screenwidth = 80;
}
printf("fd %d %s %d bytes\n", ktr->ktr_fd,
ktr->ktr_rw == UIO_READ ? "read" : "wrote", datalen);
if (maxdata && datalen > maxdata)
datalen = maxdata;
(void)printf(" \"");
col = 8;
for (;datalen > 0; datalen--, dp++) {
(void) vis(visbuf, *dp, VIS_CSTYLE, *(dp+1));
cp = visbuf;
/*
* Keep track of printables and
* space chars (like fold(1)).
*/
if (col == 0) {
(void)putchar('\t');
col = 8;
}
switch(*cp) {
case '\n':
col = 0;
(void)putchar('\n');
continue;
case '\t':
width = 8 - (col&07);
break;
default:
width = strlen(cp);
}
if (col + width > (screenwidth-2)) {
(void)printf("\\\n\t");
col = 8;
}
col += width;
do {
(void)putchar(*cp++);
} while (*cp);
}
if (col == 0)
(void)printf(" ");
(void)printf("\"\n");
}
char *signames[] = {
"NULL", "HUP", "INT", "QUIT", "ILL", "TRAP", "IOT", /* 1 - 6 */
"EMT", "FPE", "KILL", "BUS", "SEGV", "SYS", /* 7 - 12 */
"PIPE", "ALRM", "TERM", "URG", "STOP", "TSTP", /* 13 - 18 */
"CONT", "CHLD", "TTIN", "TTOU", "IO", "XCPU", /* 19 - 24 */
"XFSZ", "VTALRM", "PROF", "WINCH", "29", "USR1", /* 25 - 30 */
"USR2", NULL, /* 31 - 32 */
};
ktrpsig(psig)
struct ktr_psig *psig;
{
(void)printf("SIG%s ", signames[psig->signo]);
if (psig->action == SIG_DFL)
(void)printf("SIG_DFL\n");
else
(void)printf("caught handler=0x%x mask=0x%x code=0x%x\n",
(u_int)psig->action, psig->mask, psig->code);
}
ktrcsw(cs)
struct ktr_csw *cs;
{
(void)printf("%s %s\n", cs->out ? "stop" : "resume",
cs->user ? "user" : "kernel");
}
usage()
{
(void)fprintf(stderr,
"usage: kdump [-dnlRT] [-f trfile] [-m maxdata] [-t [cnis]]\n");
exit(1);
}
Continuous source code history from original PDP-7 UNIX to FreeBSD 2, the first fully unencumbered FreeBSD release.