1 /* 2 * Copyright (c) 1988, 1993, 1994 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, 1994\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: @(#)kill.c 8.3 (Berkeley) 4/2/94";*/ 42 static char *rcsid = "$Id: kill.c,v 1.9 1995/03/17 05:48:48 jtc Exp $"; 43 #endif /* not lint */ 44 45 #include <ctype.h> 46 #include <err.h> 47 #include <errno.h> 48 #include <signal.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 53 void nosig __P((char *)); 54 void printsignals __P((FILE *)); 55 int signame_to_signum __P((char *)); 56 void usage __P((void)); 57 58 int 59 main(argc, argv) 60 int argc; 61 char *argv[]; 62 { 63 int errors, numsig, pid; 64 char *ep; 65 66 if (argc < 2) 67 usage(); 68 69 numsig = SIGTERM; 70 71 argc--, argv++; 72 if (!strcmp(*argv, "-l")) { 73 argc--, argv++; 74 if (argc > 1) 75 usage(); 76 if (argc == 1) { 77 if (!isdigit(**argv)) 78 usage(); 79 numsig = strtol(*argv, &ep, 10); 80 if (!*argv || *ep) 81 errx(1, "illegal signal number: %s", *argv); 82 if (numsig >= 128) 83 numsig -= 128; 84 if (numsig <= 0 || numsig >= NSIG) 85 nosig(*argv); 86 printf("%s\n", sys_signame[numsig]); 87 exit(0); 88 } 89 printsignals(stdout); 90 exit(0); 91 } 92 93 if (!strcmp(*argv, "-s")) { 94 argc--, argv++; 95 if (argc < 1) { 96 warnx("option requires an argument -- s"); 97 usage(); 98 } 99 if (strcmp(*argv, "0")) { 100 if ((numsig = signame_to_signum(*argv)) < 0) 101 nosig(*argv); 102 } else 103 numsig = 0; 104 argc--, argv++; 105 } else if (**argv == '-') { 106 ++*argv; 107 if (isalpha(**argv)) { 108 if ((numsig = signame_to_signum(*argv)) < 0) 109 nosig(*argv); 110 } else if (isdigit(**argv)) { 111 numsig = strtol(*argv, &ep, 10); 112 if (!*argv || *ep) 113 errx(1, "illegal signal number: %s", *argv); 114 if (numsig < 0 || numsig >= NSIG) 115 nosig(*argv); 116 } else 117 nosig(*argv); 118 argc--, argv++; 119 } 120 121 if (argc == 0) 122 usage(); 123 124 for (errors = 0; argc; argc--, argv++) { 125 pid = strtol(*argv, &ep, 10); 126 if (!*argv || *ep) { 127 warnx("illegal process id: %s", *argv); 128 errors = 1; 129 } else if (kill(pid, numsig) == -1) { 130 warn("%s", *argv); 131 errors = 1; 132 } 133 } 134 135 exit(errors); 136 } 137 138 int 139 signame_to_signum(sig) 140 char *sig; 141 { 142 int n; 143 144 if (!strncasecmp(sig, "sig", 3)) 145 sig += 3; 146 for (n = 1; n < NSIG; n++) { 147 if (!strcasecmp(sys_signame[n], sig)) 148 return (n); 149 } 150 return (-1); 151 } 152 153 void 154 nosig(name) 155 char *name; 156 { 157 158 warnx("unknown signal %s; valid signals:", name); 159 printsignals(stderr); 160 exit(1); 161 } 162 163 void 164 printsignals(fp) 165 FILE *fp; 166 { 167 int n; 168 169 for (n = 1; n < NSIG; n++) { 170 (void)fprintf(fp, "%s", sys_signame[n]); 171 if (n == (NSIG / 2) || n == (NSIG - 1)) 172 (void)fprintf(fp, "\n"); 173 else 174 (void)fprintf(fp, " "); 175 } 176 } 177 178 void 179 usage() 180 { 181 182 (void)fprintf(stderr, "usage: kill [-s signal_name] pid ...\n"); 183 (void)fprintf(stderr, " kill -l [exit_status]\n"); 184 (void)fprintf(stderr, " kill -signal_name pid ...\n"); 185 (void)fprintf(stderr, " kill -signal_number pid ...\n"); 186 exit(1); 187 } 188