1 /* $NetBSD: kill.c,v 1.18 2001/07/29 22:46:36 wiz Exp $ */ 2 3 /* 4 * Copyright (c) 1988, 1993, 1994 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 __COPYRIGHT("@(#) Copyright (c) 1988, 1993, 1994\n\ 39 The Regents of the University of California. All rights reserved.\n"); 40 #endif /* not lint */ 41 42 #ifndef lint 43 #if 0 44 static char sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95"; 45 #else 46 __RCSID("$NetBSD: kill.c,v 1.18 2001/07/29 22:46:36 wiz Exp $"); 47 #endif 48 #endif /* not lint */ 49 50 #include <ctype.h> 51 #include <err.h> 52 #include <errno.h> 53 #include <signal.h> 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <string.h> 57 58 void nosig(char *); 59 void printsignals(FILE *); 60 int signame_to_signum(char *); 61 void usage(void); 62 int main(int, char *[]); 63 64 int 65 main(int argc, char *argv[]) 66 { 67 int errors, numsig, pid; 68 char *ep; 69 70 if (argc < 2) 71 usage(); 72 73 numsig = SIGTERM; 74 75 argc--, argv++; 76 if (strcmp(*argv, "-l") == 0) { 77 argc--, argv++; 78 if (argc > 1) 79 usage(); 80 if (argc == 1) { 81 if (isdigit((unsigned char)**argv) == 0) 82 usage(); 83 numsig = strtol(*argv, &ep, 10); 84 if (*ep != '\0') 85 errx(1, "illegal signal number: %s", *argv); 86 if (numsig >= 128) 87 numsig -= 128; 88 if (numsig <= 0 || numsig >= NSIG) 89 nosig(*argv); 90 (void)printf("%s\n", sys_signame[numsig]); 91 exit(0); 92 } 93 printsignals(stdout); 94 exit(0); 95 } 96 97 if (!strcmp(*argv, "-s")) { 98 argc--, argv++; 99 if (argc < 1) { 100 warnx("option requires an argument -- s"); 101 usage(); 102 } 103 if (strcmp(*argv, "0")) { 104 if ((numsig = signame_to_signum(*argv)) < 0) 105 nosig(*argv); 106 } else 107 numsig = 0; 108 argc--, argv++; 109 } else if (**argv == '-') { 110 ++*argv; 111 if (isalpha((unsigned char)**argv)) { 112 if ((numsig = signame_to_signum(*argv)) < 0) 113 nosig(*argv); 114 } else if (isdigit((unsigned char)**argv)) { 115 numsig = strtol(*argv, &ep, 10); 116 if (!*argv || *ep) 117 errx(1, "illegal signal number: %s", *argv); 118 if (numsig < 0 || numsig >= NSIG) 119 nosig(*argv); 120 } else 121 nosig(*argv); 122 argc--, argv++; 123 } 124 125 if (argc == 0) 126 usage(); 127 128 for (errors = 0; argc; argc--, argv++) { 129 pid = strtol(*argv, &ep, 10); 130 if (!**argv || *ep) { 131 warnx("illegal process id: %s", *argv); 132 errors = 1; 133 } else if (kill(pid, numsig) == -1) { 134 warn("%s", *argv); 135 errors = 1; 136 } 137 } 138 139 exit(errors); 140 /* NOTREACHED */ 141 } 142 143 int 144 signame_to_signum(char *sig) 145 { 146 int n; 147 148 if (strncasecmp(sig, "sig", 3) == 0) 149 sig += 3; 150 for (n = 1; n < NSIG; n++) { 151 if (!strcasecmp(sys_signame[n], sig)) 152 return (n); 153 } 154 return (-1); 155 } 156 157 void 158 nosig(char *name) 159 { 160 161 warnx("unknown signal %s; valid signals:", name); 162 printsignals(stderr); 163 exit(1); 164 /* NOTREACHED */ 165 } 166 167 void 168 printsignals(FILE *fp) 169 { 170 int n; 171 172 for (n = 1; n < NSIG; n++) { 173 (void)fprintf(fp, "%s", sys_signame[n]); 174 if (n == (NSIG / 2) || n == (NSIG - 1)) 175 (void)fprintf(fp, "\n"); 176 else 177 (void)fprintf(fp, " "); 178 } 179 } 180 181 void 182 usage(void) 183 { 184 185 (void)fprintf(stderr, "usage: kill [-s signal_name] pid ...\n"); 186 (void)fprintf(stderr, " kill -l [exit_status]\n"); 187 (void)fprintf(stderr, " kill -signal_name pid ...\n"); 188 (void)fprintf(stderr, " kill -signal_number pid ...\n"); 189 exit(1); 190 /* NOTREACHED */ 191 } 192