1 /*- 2 * Copyright (c) 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * %sccs.include.redist.c% 6 */ 7 8 #ifndef lint 9 static char copyright[] = 10 "@(#) Copyright (c) 1988, 1993\n\ 11 The Regents of the University of California. All rights reserved.\n"; 12 #endif /* not lint */ 13 14 #ifndef lint 15 static char sccsid[] = "@(#)ktrace.c 8.1 (Berkeley) 06/06/93"; 16 #endif /* not lint */ 17 18 #include <sys/param.h> 19 #include <sys/stat.h> 20 #include <sys/file.h> 21 #include <sys/time.h> 22 #include <sys/errno.h> 23 #include <sys/uio.h> 24 #include <sys/ktrace.h> 25 #include <stdio.h> 26 #include "ktrace.h" 27 28 main(argc, argv) 29 int argc; 30 char **argv; 31 { 32 extern int optind; 33 extern char *optarg; 34 enum { NOTSET, CLEAR, CLEARALL } clear; 35 int append, ch, fd, inherit, ops, pid, pidset, trpoints; 36 char *tracefile; 37 38 clear = NOTSET; 39 append = ops = pidset = inherit = 0; 40 trpoints = DEF_POINTS; 41 tracefile = DEF_TRACEFILE; 42 while ((ch = getopt(argc,argv,"aCcdf:g:ip:t:")) != EOF) 43 switch((char)ch) { 44 case 'a': 45 append = 1; 46 break; 47 case 'C': 48 clear = CLEARALL; 49 pidset = 1; 50 break; 51 case 'c': 52 clear = CLEAR; 53 break; 54 case 'd': 55 ops |= KTRFLAG_DESCEND; 56 break; 57 case 'f': 58 tracefile = optarg; 59 break; 60 case 'g': 61 pid = -rpid(optarg); 62 pidset = 1; 63 break; 64 case 'i': 65 inherit = 1; 66 break; 67 case 'p': 68 pid = rpid(optarg); 69 pidset = 1; 70 break; 71 case 't': 72 trpoints = getpoints(optarg); 73 if (trpoints < 0) { 74 (void)fprintf(stderr, 75 "ktrace: unknown facility in %s\n", optarg); 76 usage(); 77 } 78 break; 79 default: 80 usage(); 81 } 82 argv += optind; 83 argc -= optind; 84 85 if (pidset && *argv || !pidset && !*argv) 86 usage(); 87 88 if (inherit) 89 trpoints |= KTRFAC_INHERIT; 90 91 if (clear != NOTSET) { 92 if (clear == CLEARALL) { 93 ops = KTROP_CLEAR | KTRFLAG_DESCEND; 94 trpoints = ALL_POINTS; 95 pid = 1; 96 } else 97 ops |= pid ? KTROP_CLEAR : KTROP_CLEARFILE; 98 99 if (ktrace(tracefile, ops, trpoints, pid) < 0) 100 error(tracefile); 101 exit(0); 102 } 103 104 if ((fd = open(tracefile, O_CREAT | O_WRONLY | (append ? 0 : O_TRUNC), 105 DEFFILEMODE)) < 0) 106 error(tracefile); 107 (void)close(fd); 108 109 if (*argv) { 110 if (ktrace(tracefile, ops, trpoints, getpid()) < 0) 111 error(); 112 execvp(argv[0], &argv[0]); 113 error(argv[0]); 114 exit(1); 115 } 116 else if (ktrace(tracefile, ops, trpoints, pid) < 0) 117 error(tracefile); 118 exit(0); 119 } 120 121 rpid(p) 122 char *p; 123 { 124 static int first; 125 126 if (first++) { 127 (void)fprintf(stderr, 128 "ktrace: only one -g or -p flag is permitted.\n"); 129 usage(); 130 } 131 if (!*p) { 132 (void)fprintf(stderr, "ktrace: illegal process id.\n"); 133 usage(); 134 } 135 return(atoi(p)); 136 } 137 138 error(name) 139 char *name; 140 { 141 (void)fprintf(stderr, "ktrace: %s: %s.\n", name, strerror(errno)); 142 exit(1); 143 } 144 145 usage() 146 { 147 (void)fprintf(stderr, 148 "usage:\tktrace [-aCcid] [-f trfile] [-g pgid] [-p pid] [-t [acgn]\n\tktrace [-aCcid] [-f trfile] [-t [acgn] command\n"); 149 exit(1); 150 } 151