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
35 static const char copyright[] =
36 "@(#) Copyright (c) 1988, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)ktrace.c 8.1 (Berkeley) 6/6/93";
46 #include <sys/cdefs.h>
47 __FBSDID("$FreeBSD$");
49 #include <sys/param.h>
53 #include <sys/errno.h>
55 #include <sys/ktrace.h>
65 static char def_tracefile[] = DEF_TRACEFILE;
67 static void no_ktrace(int);
68 static int rpid(char *);
69 static void usage(void);
72 main(int argc, char *argv[])
74 enum { NOTSET, CLEAR, CLEARALL } clear;
75 int append, ch, fd, inherit, ops, pid, pidset, trpoints;
76 const char *tracefile;
81 append = ops = pidset = inherit = 0;
82 trpoints = DEF_POINTS;
83 tracefile = def_tracefile;
84 while ((ch = getopt(argc,argv,"aCcdf:g:ip:t:")) != -1)
97 ops |= KTRFLAG_DESCEND;
114 trpoints = getpoints(optarg);
116 warnx("unknown facility in %s", optarg);
126 if ((pidset && *argv) || (!pidset && clear == NOTSET && !*argv))
130 trpoints |= KTRFAC_INHERIT;
132 (void)signal(SIGSYS, no_ktrace);
133 if (clear != NOTSET) {
134 if (clear == CLEARALL) {
135 ops = KTROP_CLEAR | KTRFLAG_DESCEND;
136 trpoints = ALL_POINTS;
139 ops |= pidset ? KTROP_CLEAR : KTROP_CLEARFILE;
141 if (ktrace(tracefile, ops, trpoints, pid) < 0)
142 err(1, "%s", tracefile);
146 omask = umask(S_IRWXG|S_IRWXO);
148 if ((fd = open(tracefile, O_CREAT | O_WRONLY | O_NONBLOCK,
150 err(1, "%s", tracefile);
151 if (fstat(fd, &sb) != 0 || sb.st_uid != getuid())
152 errx(1, "refuse to append to %s not owned by you",
154 if (!(S_ISREG(sb.st_mode)))
155 errx(1, "%s not regular file", tracefile);
157 if (unlink(tracefile) == -1 && errno != ENOENT)
158 err(1, "unlink %s", tracefile);
159 if ((fd = open(tracefile, O_CREAT | O_EXCL | O_WRONLY,
161 err(1, "%s", tracefile);
166 trpoints |= PROC_ABI_POINTS;
169 if (ktrace(tracefile, ops, trpoints, getpid()) < 0)
170 err(1, "%s", tracefile);
171 execvp(argv[0], &argv[0]);
172 err(1, "exec of '%s' failed", argv[0]);
174 else if (ktrace(tracefile, ops, trpoints, pid) < 0)
175 err(1, "%s", tracefile);
185 warnx("only one -g or -p flag is permitted");
189 warnx("illegal process id");
198 (void)fprintf(stderr, "%s\n%s\n",
199 "usage: ktrace [-aCcdi] [-f trfile] [-g pgrp | -p pid] [-t trstr]",
200 " ktrace [-adi] [-f trfile] [-t trstr] command");
205 no_ktrace(int sig __unused)
207 (void)fprintf(stderr,
208 "error:\tktrace() system call not supported in the running kernel\n\tre-compile kernel with 'options KTRACE'\n");