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[] = "@(#)ktrace.c 8.1 (Berkeley) 6/6/93"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #include <sys/stat.h> 46 #include <sys/file.h> 47 #include <sys/time.h> 48 #include <sys/errno.h> 49 #include <sys/uio.h> 50 #include <sys/ktrace.h> 51 #include <stdio.h> 52 #include "ktrace.h" 53 54 main(argc, argv) 55 int argc; 56 char **argv; 57 { 58 extern int optind; 59 extern char *optarg; 60 enum { NOTSET, CLEAR, CLEARALL } clear; 61 int append, ch, fd, inherit, ops, pid, pidset, trpoints; 62 char *tracefile; 63 64 clear = NOTSET; 65 append = ops = pidset = inherit = 0; 66 trpoints = DEF_POINTS; 67 tracefile = DEF_TRACEFILE; 68 while ((ch = getopt(argc,argv,"aCcdf:g:ip:t:")) != EOF) 69 switch((char)ch) { 70 case 'a': 71 append = 1; 72 break; 73 case 'C': 74 clear = CLEARALL; 75 pidset = 1; 76 break; 77 case 'c': 78 clear = CLEAR; 79 break; 80 case 'd': 81 ops |= KTRFLAG_DESCEND; 82 break; 83 case 'f': 84 tracefile = optarg; 85 break; 86 case 'g': 87 pid = -rpid(optarg); 88 pidset = 1; 89 break; 90 case 'i': 91 inherit = 1; 92 break; 93 case 'p': 94 pid = rpid(optarg); 95 pidset = 1; 96 break; 97 case 't': 98 trpoints = getpoints(optarg); 99 if (trpoints < 0) { 100 (void)fprintf(stderr, 101 "ktrace: unknown facility in %s\n", optarg); 102 usage(); 103 } 104 break; 105 default: 106 usage(); 107 } 108 argv += optind; 109 argc -= optind; 110 111 if (pidset && *argv || !pidset && !*argv) 112 usage(); 113 114 if (inherit) 115 trpoints |= KTRFAC_INHERIT; 116 117 if (clear != NOTSET) { 118 if (clear == CLEARALL) { 119 ops = KTROP_CLEAR | KTRFLAG_DESCEND; 120 trpoints = ALL_POINTS; 121 pid = 1; 122 } else 123 ops |= pid ? KTROP_CLEAR : KTROP_CLEARFILE; 124 125 if (ktrace(tracefile, ops, trpoints, pid) < 0) 126 error(tracefile); 127 exit(0); 128 } 129 130 if ((fd = open(tracefile, O_CREAT | O_WRONLY | (append ? 0 : O_TRUNC), 131 DEFFILEMODE)) < 0) 132 error(tracefile); 133 (void)close(fd); 134 135 if (*argv) { 136 if (ktrace(tracefile, ops, trpoints, getpid()) < 0) 137 error(); 138 execvp(argv[0], &argv[0]); 139 error(argv[0]); 140 exit(1); 141 } 142 else if (ktrace(tracefile, ops, trpoints, pid) < 0) 143 error(tracefile); 144 exit(0); 145 } 146 147 rpid(p) 148 char *p; 149 { 150 static int first; 151 152 if (first++) { 153 (void)fprintf(stderr, 154 "ktrace: only one -g or -p flag is permitted.\n"); 155 usage(); 156 } 157 if (!*p) { 158 (void)fprintf(stderr, "ktrace: illegal process id.\n"); 159 usage(); 160 } 161 return(atoi(p)); 162 } 163 164 error(name) 165 char *name; 166 { 167 (void)fprintf(stderr, "ktrace: %s: %s.\n", name, strerror(errno)); 168 exit(1); 169 } 170 171 usage() 172 { 173 (void)fprintf(stderr, 174 "usage:\tktrace [-aCcid] [-f trfile] [-g pgid] [-p pid] [-t [acgn]\n\tktrace [-aCcid] [-f trfile] [-t [acgn] command\n"); 175 exit(1); 176 } 177