300 lines
6.7 KiB
C
300 lines
6.7 KiB
C
/* $NetBSD: ktrace.c,v 1.8 1998/06/27 21:37:50 christos Exp $ */
|
|
|
|
/*-
|
|
* 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.
|
|
*/
|
|
|
|
#include <sys/cdefs.h>
|
|
#ifndef lint
|
|
__COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\
|
|
The Regents of the University of California. All rights reserved.\n");
|
|
#endif /* not lint */
|
|
|
|
#ifndef lint
|
|
#if 0
|
|
static char sccsid[] = "@(#)ktrace.c 8.2 (Berkeley) 4/28/95";
|
|
#else
|
|
__RCSID("$NetBSD: ktrace.c,v 1.8 1998/06/27 21:37:50 christos Exp $");
|
|
#endif
|
|
#endif /* not lint */
|
|
|
|
#include <sys/param.h>
|
|
#include <sys/stat.h>
|
|
#include <sys/file.h>
|
|
#include <sys/time.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/uio.h>
|
|
#include <sys/ktrace.h>
|
|
|
|
#include <err.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
|
|
#include "ktrace.h"
|
|
|
|
int main __P((int, char **));
|
|
int rpid __P((char *));
|
|
void usage __P((void));
|
|
int do_ktrace __P((char *, int, int,int));
|
|
void no_ktrace __P((int));
|
|
|
|
#ifdef KTRUSS
|
|
extern int timestamp, decimal, fancy, tail, maxdata;
|
|
#endif
|
|
|
|
int
|
|
main(argc, argv)
|
|
int argc;
|
|
char **argv;
|
|
{
|
|
enum { NOTSET, CLEAR, CLEARALL } clear;
|
|
int append, ch, fd, inherit, ops, pid, pidset, trpoints;
|
|
char *infile, *outfile;
|
|
|
|
clear = NOTSET;
|
|
append = ops = pidset = inherit = 0;
|
|
trpoints = DEF_POINTS;
|
|
pid = 0; /* Appease GCC */
|
|
|
|
#ifdef KTRUSS
|
|
# define OPTIONS "aCce:df:g:ilm:o:p:RTt:"
|
|
outfile = infile = NULL;
|
|
#else
|
|
# define OPTIONS "aCcdf:g:ip:t:"
|
|
outfile = infile = DEF_TRACEFILE;
|
|
#endif
|
|
|
|
while ((ch = getopt(argc,argv, OPTIONS)) != -1)
|
|
switch((char)ch) {
|
|
case 'a':
|
|
append = 1;
|
|
break;
|
|
case 'C':
|
|
clear = CLEARALL;
|
|
pidset = 1;
|
|
break;
|
|
case 'c':
|
|
clear = CLEAR;
|
|
pidset = 1;
|
|
break;
|
|
case 'd':
|
|
ops |= KTRFLAG_DESCEND;
|
|
break;
|
|
#ifdef KTRUSS
|
|
case 'e':
|
|
setemul(optarg);
|
|
break;
|
|
#endif
|
|
case 'f':
|
|
infile = optarg;
|
|
break;
|
|
case 'g':
|
|
pid = -rpid(optarg);
|
|
pidset = 1;
|
|
break;
|
|
case 'i':
|
|
inherit = 1;
|
|
break;
|
|
#ifdef KTRUSS
|
|
case 'l':
|
|
tail = 1;
|
|
break;
|
|
case 'm':
|
|
maxdata = atoi(optarg);
|
|
break;
|
|
case 'o':
|
|
outfile = optarg;
|
|
break;
|
|
#endif
|
|
case 'p':
|
|
pid = rpid(optarg);
|
|
pidset = 1;
|
|
break;
|
|
#ifdef KTRUSS
|
|
case 'R':
|
|
timestamp = 2; /* relative timestamp */
|
|
break;
|
|
case 'T':
|
|
timestamp = 1;
|
|
break;
|
|
#endif
|
|
case 't':
|
|
trpoints = getpoints(optarg);
|
|
if (trpoints < 0) {
|
|
warnx("unknown facility in %s", optarg);
|
|
usage();
|
|
}
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
argv += optind;
|
|
argc -= optind;
|
|
|
|
if (!infile && ((pidset && *argv) || (!pidset && !*argv)))
|
|
usage();
|
|
|
|
#ifdef KTRUSS
|
|
if (infile) {
|
|
dumpfile(infile, 0, trpoints);
|
|
exit(0);
|
|
}
|
|
#endif
|
|
if (inherit)
|
|
trpoints |= KTRFAC_INHERIT;
|
|
|
|
(void)signal(SIGSYS, no_ktrace);
|
|
if (clear != NOTSET) {
|
|
if (clear == CLEARALL) {
|
|
ops = KTROP_CLEAR | KTRFLAG_DESCEND;
|
|
trpoints = ALL_POINTS;
|
|
pid = 1;
|
|
} else
|
|
ops |= pid ? KTROP_CLEAR : KTROP_CLEARFILE;
|
|
|
|
(void)do_ktrace(outfile, ops, trpoints, pid);
|
|
exit(0);
|
|
}
|
|
|
|
if (outfile && strcmp(outfile, "-")) {
|
|
if ((fd = open(outfile, O_CREAT | O_WRONLY |
|
|
(append ? 0 : O_TRUNC), DEFFILEMODE)) < 0)
|
|
err(1, outfile);
|
|
(void)close(fd);
|
|
}
|
|
|
|
if (*argv) {
|
|
(void)do_ktrace(outfile, ops, trpoints, getpid());
|
|
execvp(argv[0], &argv[0]);
|
|
err(1, "exec of '%s' failed", argv[0]);
|
|
} else
|
|
(void)do_ktrace(outfile, ops, trpoints, pid);
|
|
exit(0);
|
|
}
|
|
|
|
int
|
|
rpid(p)
|
|
char *p;
|
|
{
|
|
static int first;
|
|
|
|
if (first++) {
|
|
warnx("only one -g or -p flag is permitted.");
|
|
usage();
|
|
}
|
|
if (!*p) {
|
|
warnx("illegal process id.");
|
|
usage();
|
|
}
|
|
return(atoi(p));
|
|
}
|
|
|
|
void
|
|
usage()
|
|
{
|
|
extern char *__progname;
|
|
#ifdef KTRUSS
|
|
# define LONG_OPTION "[-e emulation] [-m maxdata] [-o outfile] "
|
|
# define SHRT_OPTION "RT"
|
|
#else
|
|
# define LONG_OPTION ""
|
|
# define SHRT_OPTION ""
|
|
#endif
|
|
(void)fprintf(stderr,
|
|
"Usage:\t%s [-aCcid%s] %s[-f trfile] [-g pgid] [-p pid] [-t [cenisw+]]\n\t%s [-aCcid%s] %s[-f trfile] [-t [cenisw+]] command\n",
|
|
__progname, SHRT_OPTION, LONG_OPTION,
|
|
__progname, SHRT_OPTION, LONG_OPTION);
|
|
exit(1);
|
|
}
|
|
|
|
void
|
|
no_ktrace(sig)
|
|
int sig;
|
|
{
|
|
(void)fprintf(stderr,
|
|
"error:\tktrace() system call not supported in the running kernel\n\tre-compile kernel with 'options KTRACE'\n");
|
|
exit(1);
|
|
}
|
|
|
|
int
|
|
do_ktrace(tracefile, ops, trpoints, pid)
|
|
char *tracefile;
|
|
int ops;
|
|
int trpoints;
|
|
int pid;
|
|
{
|
|
int ret;
|
|
|
|
if (!tracefile || strcmp(tracefile, "-") == 0) {
|
|
int pi[2], nofork, fpid;
|
|
|
|
if (pipe(pi) < 0)
|
|
err(1, "pipe(2)");
|
|
fcntl(pi[0], F_SETFD, FD_CLOEXEC|fcntl(pi[0], F_GETFD, 0));
|
|
fcntl(pi[1], F_SETFD, FD_CLOEXEC|fcntl(pi[1], F_GETFD, 0));
|
|
|
|
nofork = (pid != getpid());
|
|
|
|
if (!nofork)
|
|
fpid = fork();
|
|
else
|
|
fpid = 0; /* XXX: Gcc */
|
|
if (nofork || !fpid) {
|
|
if (nofork)
|
|
ret = fktrace(pi[1], ops, trpoints, pid);
|
|
else
|
|
close(pi[1]);
|
|
#ifdef KTRUSS
|
|
dumpfile(NULL, pi[0], trpoints);
|
|
#else
|
|
{
|
|
char buf[512];
|
|
int n, cnt = 0;
|
|
|
|
while ((n = read(pi[0], buf, sizeof(buf)))>0) {
|
|
write(1, buf, n);
|
|
cnt += n;
|
|
}
|
|
}
|
|
#endif
|
|
return 0;
|
|
}
|
|
close(pi[0]);
|
|
ret = fktrace(pi[1], ops, trpoints, pid);
|
|
} else
|
|
ret = ktrace(tracefile, ops, trpoints, pid);
|
|
if (ret < 0)
|
|
err(1, tracefile);
|
|
return ret;
|
|
}
|