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 void nosig __P((char *)); 57 void printsignals __P((FILE *)); 58 int signame_to_signum __P((char *)); 59 void usage __P((void)); 60 61 int 62 main(argc, argv) 63 int argc; 64 char *argv[]; 65 { 66 int errors, numsig, pid; 67 char *ep; 68 69 if (argc < 2) 70 usage(); 71 72 numsig = SIGTERM; 73 74 argc--, argv++; 75 if (!strcmp(*argv, "-l")) { 76 argc--, argv++; 77 if (argc > 1) 78 usage(); 79 if (argc == 1) { 80 if (!isdigit(**argv)) 81 usage(); 82 numsig = strtol(*argv, &ep, 10); 83 if (!**argv || *ep) 84 errx(1, "illegal signal number: %s", *argv); 85 if (numsig >= 128) 86 numsig -= 128; 87 if (numsig <= 0 || numsig >= NSIG) 88 nosig(*argv); 89 printf("%s\n", sys_signame[numsig]); 90 exit(0); 91 } 92 printsignals(stdout); 93 exit(0); 94 } 95 96 if (!strcmp(*argv, "-s")) { 97 argc--, argv++; 98 if (argc < 1) { 99 warnx("option requires an argument -- s"); 100 usage(); 101 } 102 if (strcmp(*argv, "0")) { 103 if ((numsig = signame_to_signum(*argv)) < 0) 104 nosig(*argv); 105 } else 106 numsig = 0; 107 argc--, argv++; 108 } else if (**argv == '-') { 109 ++*argv; 110 if (isalpha(**argv)) { 111 if ((numsig = signame_to_signum(*argv)) < 0) 112 nosig(*argv); 113 } else if (isdigit(**argv)) { 114 numsig = strtol(*argv, &ep, 10); 115 if (!**argv || *ep) 116 errx(1, "illegal signal number: %s", *argv); 117 if (numsig < 0 || numsig >= NSIG) 118 nosig(*argv); 119 } else 120 nosig(*argv); 121 argc--, argv++; 122 } 123 124 if (argc == 0) 125 usage(); 126 127 for (errors = 0; argc; argc--, argv++) { 128 pid = strtol(*argv, &ep, 10); 129 if (!**argv || *ep) { 130 warnx("illegal process id: %s", *argv); 131 errors = 1; 132 } else if (kill(pid, numsig) == -1) { 133 warn("%s", *argv); 134 errors = 1; 135 } 136 } 137 138 exit(errors); 139 } 140 141 int 142 signame_to_signum(sig) 143 char *sig; 144 { 145 int n; 146 147 if (!strncasecmp(sig, "sig", 3)) 148 sig += 3; 149 for (n = 1; n < NSIG; n++) { 150 if (!strcasecmp(sys_signame[n], sig)) 151 return (n); 152 } 153 return (-1); 154 } 155 156 void 157 nosig(name) 158 char *name; 159 { 160 161 warnx("unknown signal %s; valid signals:", name); 162 printsignals(stderr); 163 exit(1); 164 } 165 166 void 167 printsignals(fp) 168 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() 183 { 184 185 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n", 186 "usage: kill [-s signal_name] pid ...", 187 " kill -l [exit_status]", 188 " kill -signal_name pid ...", 189 " kill -signal_number pid ..."); 190 exit(1); 191 } 192