1 /* $OpenBSD: kill.c,v 1.3 1997/02/06 13:29:08 deraadt Exp $ */ 2 /* $NetBSD: kill.c,v 1.11 1995/09/07 06:30:27 jtc Exp $ */ 3 4 /* 5 * Copyright (c) 1988, 1993, 1994 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by the University of 19 * California, Berkeley and its contributors. 20 * 4. Neither the name of the University nor the names of its contributors 21 * may be used to endorse or promote products derived from this software 22 * without specific prior written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 34 * SUCH DAMAGE. 35 */ 36 37 #ifndef lint 38 static char copyright[] = 39 "@(#) Copyright (c) 1988, 1993, 1994\n\ 40 The Regents of the University of California. All rights reserved.\n"; 41 #endif /* not lint */ 42 43 #ifndef lint 44 #if 0 45 static char sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95"; 46 #else 47 static char rcsid[] = "$OpenBSD: kill.c,v 1.3 1997/02/06 13:29:08 deraadt Exp $"; 48 #endif 49 #endif /* not lint */ 50 51 #include <ctype.h> 52 #include <err.h> 53 #include <errno.h> 54 #include <signal.h> 55 #include <stdio.h> 56 #include <stdlib.h> 57 #include <string.h> 58 59 void nosig __P((char *)); 60 void printsignals __P((FILE *)); 61 int signame_to_signum __P((char *)); 62 void usage __P((void)); 63 64 int 65 main(argc, argv) 66 int argc; 67 char *argv[]; 68 { 69 int errors, numsig, pid; 70 char *ep; 71 72 if (argc < 2) 73 usage(); 74 75 numsig = SIGTERM; 76 77 argc--, argv++; 78 if (!strcmp(*argv, "-l")) { 79 argc--, argv++; 80 if (argc > 1) 81 usage(); 82 if (argc == 1) { 83 if (!isdigit(**argv)) 84 usage(); 85 numsig = strtol(*argv, &ep, 10); 86 if (!*argv || *ep) 87 errx(1, "illegal signal number: %s", *argv); 88 if (numsig >= 128) 89 numsig -= 128; 90 if (numsig <= 0 || numsig >= NSIG) 91 nosig(*argv); 92 printf("%s\n", sys_signame[numsig]); 93 exit(0); 94 } 95 printsignals(stdout); 96 exit(0); 97 } 98 99 if (!strcmp(*argv, "-s")) { 100 argc--, argv++; 101 if (argc < 1) { 102 warnx("option requires an argument -- s"); 103 usage(); 104 } 105 if (strcmp(*argv, "0")) { 106 if ((numsig = signame_to_signum(*argv)) < 0) 107 nosig(*argv); 108 } else 109 numsig = 0; 110 argc--, argv++; 111 } else if (**argv == '-') { 112 ++*argv; 113 if (isalpha(**argv)) { 114 if ((numsig = signame_to_signum(*argv)) < 0) 115 nosig(*argv); 116 } else if (isdigit(**argv)) { 117 numsig = strtol(*argv, &ep, 10); 118 if (*ep) 119 errx(1, "illegal signal number: %s", *argv); 120 if (numsig < 0 || numsig >= NSIG) 121 nosig(*argv); 122 } else 123 nosig(*argv); 124 argc--, argv++; 125 } 126 127 if (argc == 0) 128 usage(); 129 130 for (errors = 0; argc; argc--, argv++) { 131 pid = strtol(*argv, &ep, 10); 132 if (!**argv || *ep) { 133 warnx("illegal process id: %s", *argv); 134 errors = 1; 135 } else if (kill(pid, numsig) == -1) { 136 warn("%s", *argv); 137 errors = 1; 138 } 139 } 140 141 exit(errors); 142 } 143 144 int 145 signame_to_signum(sig) 146 char *sig; 147 { 148 int n; 149 150 if (!strncasecmp(sig, "sig", 3)) 151 sig += 3; 152 for (n = 1; n < NSIG; n++) { 153 if (!strcasecmp(sys_signame[n], sig)) 154 return (n); 155 } 156 return (-1); 157 } 158 159 void 160 nosig(name) 161 char *name; 162 { 163 164 warnx("unknown signal %s; valid signals:", name); 165 printsignals(stderr); 166 exit(1); 167 } 168 169 void 170 printsignals(fp) 171 FILE *fp; 172 { 173 int n; 174 175 for (n = 1; n < NSIG; n++) { 176 (void)fprintf(fp, "%s", sys_signame[n]); 177 if (n == (NSIG / 2) || n == (NSIG - 1)) 178 (void)fprintf(fp, "\n"); 179 else 180 (void)fprintf(fp, " "); 181 } 182 } 183 184 void 185 usage() 186 { 187 188 (void)fprintf(stderr, "usage: kill [-s signal_name] pid ...\n"); 189 (void)fprintf(stderr, " kill -l [exit_status]\n"); 190 (void)fprintf(stderr, " kill -signal_name pid ...\n"); 191 (void)fprintf(stderr, " kill -signal_number pid ...\n"); 192 exit(1); 193 } 194