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 const 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 #if 0 42 static char sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95"; 43 #endif 44 static const char rcsid[] = 45 "$FreeBSD$"; 46 #endif /* not lint */ 47 48 #include <ctype.h> 49 #include <err.h> 50 #include <errno.h> 51 #include <signal.h> 52 #include <stdio.h> 53 #include <stdlib.h> 54 #include <string.h> 55 56 int main __P((int, char *[])); 57 void nosig __P((char *)); 58 void printsignals __P((FILE *)); 59 int signame_to_signum __P((char *)); 60 void usage __P((void)); 61 62 int 63 main(argc, argv) 64 int argc; 65 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")) { 77 argc--, argv++; 78 if (argc > 1) 79 usage(); 80 if (argc == 1) { 81 if (!isdigit(**argv)) 82 usage(); 83 numsig = strtol(*argv, &ep, 10); 84 if (!**argv || *ep) 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 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(**argv)) { 112 if ((numsig = signame_to_signum(*argv)) < 0) 113 nosig(*argv); 114 } else if (isdigit(**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 } 141 142 int 143 signame_to_signum(sig) 144 char *sig; 145 { 146 int n; 147 148 if (!strncasecmp(sig, "sig", (size_t)3)) 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(name) 159 char *name; 160 { 161 162 warnx("unknown signal %s; valid signals:", name); 163 printsignals(stderr); 164 exit(1); 165 } 166 167 void 168 printsignals(fp) 169 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() 184 { 185 186 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 187 "usage: kill [-s signal_name] pid ...", 188 " kill -l [exit_status]", 189 " kill -signal_name pid ...", 190 " kill -signal_number pid ..."); 191 exit(1); 192 } 193