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 * @(#)ktrace.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.bin/ktrace/ktrace.c,v 1.12.2.3 2001/07/11 00:29:27 mikeh Exp $
36 * $DragonFly: src/usr.bin/ktrace/ktrace.c,v 1.3 2003/10/04 20:36:46 hmp Exp $
39 #include <sys/param.h>
43 #include <sys/errno.h>
45 #include <sys/ktrace.h>
56 main(int argc, char **argv)
58 enum { NOTSET, CLEAR, CLEARALL } clear;
59 int append, ch, fd, inherit, ops, pid, pidset, trpoints;
65 append = ops = pidset = inherit = 0;
66 trpoints = DEF_POINTS;
67 tracefile = DEF_TRACEFILE;
68 while ((ch = getopt(argc,argv,"aCcdf:g:ip:t:")) != -1)
81 ops |= KTRFLAG_DESCEND;
98 trpoints = getpoints(optarg);
100 warnx("unknown facility in %s", optarg);
110 if (pidset && *argv || !pidset && !*argv)
114 trpoints |= KTRFAC_INHERIT;
116 (void)signal(SIGSYS, no_ktrace);
117 if (clear != NOTSET) {
118 if (clear == CLEARALL) {
119 ops = KTROP_CLEAR | KTRFLAG_DESCEND;
120 trpoints = ALL_POINTS;
123 ops |= pidset ? KTROP_CLEAR : KTROP_CLEARFILE;
125 if (ktrace(tracefile, ops, trpoints, pid) < 0)
126 err(1, "%s", tracefile);
130 omask = umask(S_IRWXG|S_IRWXO);
132 if ((fd = open(tracefile, O_CREAT | O_WRONLY, DEFFILEMODE)) < 0)
133 err(1, "%s", tracefile);
134 if (fstat(fd, &sb) != 0 || sb.st_uid != getuid())
135 errx(1, "Refuse to append to %s not owned by you.",
138 if (unlink(tracefile) == -1 && errno != ENOENT)
139 err(1, "unlink %s", tracefile);
140 if ((fd = open(tracefile, O_CREAT | O_EXCL | O_WRONLY,
142 err(1, "%s", tracefile);
148 if (ktrace(tracefile, ops, trpoints, getpid()) < 0)
149 err(1, "%s", tracefile);
150 execvp(argv[0], &argv[0]);
151 err(1, "exec of '%s' failed", argv[0]);
153 else if (ktrace(tracefile, ops, trpoints, pid) < 0)
154 err(1, "%s", tracefile);
163 warnx("only one -g or -p flag is permitted.");
167 warnx("illegal process id.");
176 (void)fprintf(stderr, "%s\n%s\n",
177 "usage: ktrace [-aCcdi] [-f trfile] [-g pgrp | -p pid] [-t cnisuw]",
178 " ktrace [-adi] [-f trfile] [-t cnisuw] command");
185 (void)fprintf(stderr,
186 "error:\tktrace() system call not supported in the running kernel\n\tre-compile kernel with 'options KTRACE'\n");