2 * Copyright (c) 1988, 1993, 1994
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * Important: This file is used both as a standalone program /bin/kill and
31 * as a builtin for /bin/sh (#define SHELL).
36 static char const copyright[] =
37 "@(#) Copyright (c) 1988, 1993, 1994\n\
38 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)kill.c 8.4 (Berkeley) 4/28/95";
45 #include <sys/cdefs.h>
46 __FBSDID("$FreeBSD$");
58 #include "bltin/bltin.h"
62 static void nosig(const char *);
63 static void printsignals(FILE *);
64 static int signame_to_signum(const char *);
65 static void usage(void);
68 main(int argc, char *argv[])
81 if (!strcmp(*argv, "-l")) {
88 numsig = strtol(*argv, &ep, 10);
90 errx(2, "illegal signal number: %s", *argv);
93 if (numsig <= 0 || numsig >= sys_nsig)
95 printf("%s\n", sys_signame[numsig]);
102 if (!strcmp(*argv, "-s")) {
105 warnx("option requires an argument -- s");
108 if (strcmp(*argv, "0")) {
109 if ((numsig = signame_to_signum(*argv)) < 0)
114 } else if (**argv == '-' && *(*argv + 1) != '-') {
116 if (isalpha(**argv)) {
117 if ((numsig = signame_to_signum(*argv)) < 0)
119 } else if (isdigit(**argv)) {
120 numsig = strtol(*argv, &ep, 10);
122 errx(2, "illegal signal number: %s", *argv);
130 if (argc > 0 && strncmp(*argv, "--", 2) == 0)
136 for (errors = 0; argc; argc--, argv++) {
139 pid = getjobpgrp(*argv);
143 pidl = strtol(*argv, &ep, 10);
144 /* Check for overflow of pid_t. */
146 if (!**argv || *ep || pid != pidl)
147 errx(2, "illegal process id: %s", *argv);
149 if (kill(pid, numsig) == -1) {
159 signame_to_signum(const char *sig)
163 if (strncasecmp(sig, "SIG", 3) == 0)
165 for (n = 1; n < sys_nsig; n++) {
166 if (!strcasecmp(sys_signame[n], sig))
173 nosig(const char *name)
176 warnx("unknown signal %s; valid signals:", name);
177 printsignals(stderr);
186 printsignals(FILE *fp)
190 for (n = 1; n < sys_nsig; n++) {
191 (void)fprintf(fp, "%s", sys_signame[n]);
192 if (n == (sys_nsig / 2) || n == (sys_nsig - 1))
193 (void)fprintf(fp, "\n");
195 (void)fprintf(fp, " ");
203 (void)fprintf(stderr, "%s\n%s\n%s\n%s\n",
204 "usage: kill [-s signal_name] pid ...",
205 " kill -l [exit_status]",
206 " kill -signal_name pid ...",
207 " kill -signal_number pid ...");