1 /*- 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 20 * 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 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 static char copyright[] = 36 "@(#) Copyright (c) 1988, 1993\n\ 37 The Regents of the University of California. All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 /*static char sccsid[] = "from: @(#)ktrace.c 8.1 (Berkeley) 6/6/93";*/ 42 static char *rcsid = "$Id: ktrace.c,v 1.3 1995/01/03 07:04:18 glass Exp $"; 43 #endif /* not lint */ 44 45 #include <sys/param.h> 46 #include <sys/stat.h> 47 #include <sys/file.h> 48 #include <sys/time.h> 49 #include <sys/errno.h> 50 #include <sys/uio.h> 51 #include <sys/ktrace.h> 52 53 #include <err.h> 54 #include <stdio.h> 55 #include <unistd.h> 56 57 #include "ktrace.h" 58 59 void no_ktrace __P((int)); 60 void usage __P((void)); 61 62 main(argc, argv) 63 int argc; 64 char **argv; 65 { 66 enum { NOTSET, CLEAR, CLEARALL } clear; 67 int append, ch, fd, inherit, ops, pid, pidset, trpoints; 68 char *tracefile; 69 70 clear = NOTSET; 71 append = ops = pidset = inherit = 0; 72 trpoints = DEF_POINTS; 73 tracefile = DEF_TRACEFILE; 74 while ((ch = getopt(argc,argv,"aCcdf:g:ip:t:")) != EOF) 75 switch((char)ch) { 76 case 'a': 77 append = 1; 78 break; 79 case 'C': 80 clear = CLEARALL; 81 pidset = 1; 82 break; 83 case 'c': 84 clear = CLEAR; 85 break; 86 case 'd': 87 ops |= KTRFLAG_DESCEND; 88 break; 89 case 'f': 90 tracefile = optarg; 91 break; 92 case 'g': 93 pid = -rpid(optarg); 94 pidset = 1; 95 break; 96 case 'i': 97 inherit = 1; 98 break; 99 case 'p': 100 pid = rpid(optarg); 101 pidset = 1; 102 break; 103 case 't': 104 trpoints = getpoints(optarg); 105 if (trpoints < 0) { 106 warnx("unknown facility in %s", optarg); 107 usage(); 108 } 109 break; 110 default: 111 usage(); 112 } 113 argv += optind; 114 argc -= optind; 115 116 if (pidset && *argv || !pidset && !*argv) 117 usage(); 118 119 if (inherit) 120 trpoints |= KTRFAC_INHERIT; 121 122 (void)signal(SIGSYS, no_ktrace); 123 if (clear != NOTSET) { 124 if (clear == CLEARALL) { 125 ops = KTROP_CLEAR | KTRFLAG_DESCEND; 126 trpoints = ALL_POINTS; 127 pid = 1; 128 } else 129 ops |= pid ? KTROP_CLEAR : KTROP_CLEARFILE; 130 131 if (ktrace(tracefile, ops, trpoints, pid) < 0) 132 err(1, tracefile); 133 exit(0); 134 } 135 136 if ((fd = open(tracefile, O_CREAT | O_WRONLY | (append ? 0 : O_TRUNC), 137 DEFFILEMODE)) < 0) 138 err(1, tracefile); 139 (void)close(fd); 140 141 if (*argv) { 142 if (ktrace(tracefile, ops, trpoints, getpid()) < 0) 143 err(1, tracefile); 144 execvp(argv[0], &argv[0]); 145 err(1, "exec of '%s' failed", argv[0]); 146 } 147 else if (ktrace(tracefile, ops, trpoints, pid) < 0) 148 err(1, tracefile); 149 exit(0); 150 } 151 152 rpid(p) 153 char *p; 154 { 155 static int first; 156 157 if (first++) { 158 warnx("only one -g or -p flag is permitted."); 159 usage(); 160 } 161 if (!*p) { 162 warnx("illegal process id."); 163 usage(); 164 } 165 return(atoi(p)); 166 } 167 168 void 169 usage() 170 { 171 (void)fprintf(stderr, 172 "usage:\tktrace [-aCcid] [-f trfile] [-g pgid] [-p pid] [-t [acgn]\n\tktrace [-aCcid] [-f trfile] [-t [acgn] command\n"); 173 exit(1); 174 } 175 176 void 177 no_ktrace(sig) 178 int sig; 179 { 180 (void)fprintf(stderr, 181 "error:\tktrace() system call not supported in the running kernel\n\tre-compile kernel with 'options KTRACE'\n"); 182 exit(1); 183 } 184