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. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * @(#) Copyright (c) 1988, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)ktrace.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.bin/ktrace/ktrace.c,v 1.12.2.3 2001/07/11 00:29:27 mikeh Exp $
32 * $DragonFly: src/usr.bin/ktrace/ktrace.c,v 1.4 2005/06/01 03:05:40 swildner Exp $
35 #include <sys/param.h>
39 #include <sys/errno.h>
41 #include <sys/ktrace.h>
50 static void no_ktrace(int);
51 static int rpid(char *p);
52 static void usage(void);
55 main(int argc, char **argv)
57 enum { NOTSET, CLEAR, CLEARALL } clear;
58 int append, ch, fd, inherit, ops, pid, pidset, trpoints;
59 const char *tracefile;
64 append = ops = pid = pidset = inherit = 0;
65 trpoints = DEF_POINTS;
66 tracefile = DEF_TRACEFILE;
67 while ((ch = getopt(argc, argv, "aCcdf:g:ip:t:")) != -1)
80 ops |= KTRFLAG_DESCEND;
97 trpoints = getpoints(optarg);
99 warnx("unknown facility in %s", optarg);
109 if ((pidset && *argv) || (!pidset && clear == NOTSET && !*argv))
113 trpoints |= KTRFAC_INHERIT;
115 signal(SIGSYS, no_ktrace);
116 if (clear != NOTSET) {
117 if (clear == CLEARALL) {
118 ops = KTROP_CLEAR | KTRFLAG_DESCEND;
119 trpoints = ALL_POINTS;
122 ops |= pidset ? KTROP_CLEAR : KTROP_CLEARFILE;
124 if (ktrace(tracefile, ops, trpoints, pid) < 0)
125 err(1, "%s", tracefile);
129 omask = umask(S_IRWXG|S_IRWXO);
131 if ((fd = open(tracefile, O_CREAT | O_WRONLY, DEFFILEMODE)) < 0)
132 err(1, "%s", tracefile);
133 if (fstat(fd, &sb) != 0 || sb.st_uid != getuid())
134 errx(1, "Refuse to append to %s not owned by you.",
137 if (unlink(tracefile) == -1 && errno != ENOENT)
138 err(1, "unlink %s", tracefile);
139 if ((fd = open(tracefile, O_CREAT | O_EXCL | O_WRONLY,
141 err(1, "%s", tracefile);
147 if (ktrace(tracefile, ops, trpoints, getpid()) < 0)
148 err(1, "%s", tracefile);
149 execvp(argv[0], &argv[0]);
150 err(1, "exec of '%s' failed", argv[0]);
152 else if (ktrace(tracefile, ops, trpoints, pid) < 0)
153 err(1, "%s", tracefile);
163 warnx("only one -g or -p flag is permitted.");
167 warnx("illegal process id.");
176 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");
183 no_ktrace(int sig __unused)
186 "error:\tktrace() system call not supported in the running kernel\n\tre-compile kernel with 'options KTRACE'\n");