1 /* $NetBSD: kill.c,v 1.19 2001/09/16 13:55:09 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 1.19 2001/09/16 13:55:09 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 setprogname(argv[0]); 71 if (argc < 2) 72 usage(); 73 74 numsig = SIGTERM; 75 76 argc--, argv++; 77 if (strcmp(*argv, "-l") == 0) { 78 argc--, argv++; 79 if (argc > 1) 80 usage(); 81 if (argc == 1) { 82 if (isdigit((unsigned char)**argv) == 0) 83 usage(); 84 numsig = strtol(*argv, &ep, 10); 85 if (*ep != '\0') 86 errx(1, "illegal signal number: %s", *argv); 87 if (numsig >= 128) 88 numsig -= 128; 89 if (numsig <= 0 || numsig >= NSIG) 90 nosig(*argv); 91 (void)printf("%s\n", sys_signame[numsig]); 92 exit(0); 93 } 94 printsignals(stdout); 95 exit(0); 96 } 97 98 if (!strcmp(*argv, "-s")) { 99 argc--, argv++; 100 if (argc < 1) { 101 warnx("option requires an argument -- s"); 102 usage(); 103 } 104 if (strcmp(*argv, "0")) { 105 if ((numsig = signame_to_signum(*argv)) < 0) 106 nosig(*argv); 107 } else 108 numsig = 0; 109 argc--, argv++; 110 } else if (**argv == '-') { 111 ++*argv; 112 if (isalpha((unsigned char)**argv)) { 113 if ((numsig = signame_to_signum(*argv)) < 0) 114 nosig(*argv); 115 } else if (isdigit((unsigned char)**argv)) { 116 numsig = strtol(*argv, &ep, 10); 117 if (!*argv || *ep) 118 errx(1, "illegal signal number: %s", *argv); 119 if (numsig < 0 || numsig >= NSIG) 120 nosig(*argv); 121 } else 122 nosig(*argv); 123 argc--, argv++; 124 } 125 126 if (argc == 0) 127 usage(); 128 129 for (errors = 0; argc; argc--, argv++) { 130 pid = strtol(*argv, &ep, 10); 131 if (!**argv || *ep) { 132 warnx("illegal process id: %s", *argv); 133 errors = 1; 134 } else if (kill(pid, numsig) == -1) { 135 warn("%s", *argv); 136 errors = 1; 137 } 138 } 139 140 exit(errors); 141 /* NOTREACHED */ 142 } 143 144 int 145 signame_to_signum(char *sig) 146 { 147 int n; 148 149 if (strncasecmp(sig, "sig", 3) == 0) 150 sig += 3; 151 for (n = 1; n < NSIG; n++) { 152 if (!strcasecmp(sys_signame[n], sig)) 153 return (n); 154 } 155 return (-1); 156 } 157 158 void 159 nosig(char *name) 160 { 161 162 warnx("unknown signal %s; valid signals:", name); 163 printsignals(stderr); 164 exit(1); 165 /* NOTREACHED */ 166 } 167 168 void 169 printsignals(FILE *fp) 170 { 171 int n; 172 173 for (n = 1; n < NSIG; n++) { 174 (void)fprintf(fp, "%s", sys_signame[n]); 175 if (n == (NSIG / 2) || n == (NSIG - 1)) 176 (void)fprintf(fp, "\n"); 177 else 178 (void)fprintf(fp, " "); 179 } 180 } 181 182 void 183 usage(void) 184 { 185 186 (void)fprintf(stderr, "usage: %s [-s signal_name] pid ...\n" 187 " %s -l [exit_status]\n" 188 " %s -signal_name pid ...\n" 189 " %s -signal_number pid ...\n", 190 getprogname(), getprogname(), getprogname(), getprogname()); 191 exit(1); 192 /* NOTREACHED */ 193 } 194