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 * 4. 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
31 static const char copyright[] =
32 "@(#) Copyright (c) 1988, 1993\n\
33 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)ktrace.c 8.1 (Berkeley) 6/6/93";
42 #include <sys/cdefs.h>
43 __FBSDID("$FreeBSD$");
45 #include <sys/param.h>
49 #include <sys/errno.h>
51 #include <sys/ktrace.h>
60 static char def_tracefile[] = DEF_TRACEFILE;
62 static void no_ktrace(int);
63 static int rpid(char *);
64 static void usage(void);
67 main(int argc, char *argv[])
69 enum { NOTSET, CLEAR, CLEARALL } clear;
70 int append, ch, fd, inherit, ops, pid, pidset, trpoints;
71 const char *tracefile;
76 append = ops = pidset = inherit = 0;
77 trpoints = DEF_POINTS;
78 tracefile = def_tracefile;
79 while ((ch = getopt(argc,argv,"aCcdf:g:ip:t:")) != -1)
92 ops |= KTRFLAG_DESCEND;
109 trpoints = getpoints(optarg);
111 warnx("unknown facility in %s", optarg);
121 if ((pidset && *argv) || (!pidset && clear == NOTSET && !*argv))
125 trpoints |= KTRFAC_INHERIT;
127 (void)signal(SIGSYS, no_ktrace);
128 if (clear != NOTSET) {
129 if (clear == CLEARALL) {
130 ops = KTROP_CLEAR | KTRFLAG_DESCEND;
131 trpoints = ALL_POINTS;
134 ops |= pidset ? KTROP_CLEAR : KTROP_CLEARFILE;
136 if (ktrace(tracefile, ops, trpoints, pid) < 0)
137 err(1, "%s", tracefile);
141 omask = umask(S_IRWXG|S_IRWXO);
143 if ((fd = open(tracefile, O_CREAT | O_WRONLY | O_NONBLOCK,
145 err(1, "%s", tracefile);
146 if (fstat(fd, &sb) != 0 || sb.st_uid != getuid())
147 errx(1, "refuse to append to %s not owned by you",
149 if (!(S_ISREG(sb.st_mode)))
150 errx(1, "%s not regular file", tracefile);
152 if (unlink(tracefile) == -1 && errno != ENOENT)
153 err(1, "unlink %s", tracefile);
154 if ((fd = open(tracefile, O_CREAT | O_EXCL | O_WRONLY,
156 err(1, "%s", tracefile);
161 trpoints |= PROC_ABI_POINTS;
164 if (ktrace(tracefile, ops, trpoints, getpid()) < 0)
165 err(1, "%s", tracefile);
166 execvp(argv[0], &argv[0]);
167 err(1, "exec of '%s' failed", argv[0]);
169 else if (ktrace(tracefile, ops, trpoints, pid) < 0)
170 err(1, "%s", tracefile);
180 warnx("only one -g or -p flag is permitted");
184 warnx("illegal process id");
193 (void)fprintf(stderr, "%s\n%s\n",
194 "usage: ktrace [-aCcdi] [-f trfile] [-g pgrp | -p pid] [-t trstr]",
195 " ktrace [-adi] [-f trfile] [-t trstr] command");
200 no_ktrace(int sig __unused)
202 (void)fprintf(stderr,
203 "error:\tktrace() system call not supported in the running kernel\n\tre-compile kernel with 'options KTRACE'\n");