GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: bin/kill/kill.c Lines: 0 80 0.0 %
Date: 2017-11-13 Branches: 0 64 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: kill.c,v 1.14 2017/03/29 22:40:15 millert Exp $	*/
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/*	$NetBSD: kill.c,v 1.11 1995/09/07 06:30:27 jtc Exp $	*/
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/*
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 * Copyright (c) 1988, 1993, 1994
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or without
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 * modification, are permitted provided that the following conditions
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 * are met:
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 * 1. Redistributions of source code must retain the above copyright
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 *    notice, this list of conditions and the following disclaimer.
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 * 2. Redistributions in binary form must reproduce the above copyright
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 *    notice, this list of conditions and the following disclaimer in the
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 *    documentation and/or other materials provided with the distribution.
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 * 3. Neither the name of the University nor the names of its contributors
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 *    may be used to endorse or promote products derived from this software
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 *    without specific prior written permission.
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 *
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 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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 * SUCH DAMAGE.
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 */
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#include <ctype.h>
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#include <err.h>
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#include <errno.h>
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#include <limits.h>
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#include <signal.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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extern	char *__progname;
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void nosig(char *);
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void printsignals(FILE *);
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int signame_to_signum(char *);
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void usage(void);
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int
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main(int argc, char *argv[])
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{
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	int errors, numsig, pid;
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	const char *errstr;
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	if (pledge("stdio proc flock rpath cpath wpath", NULL) == -1)
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		err(1, "pledge");
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	if (argc < 2)
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		usage();
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	numsig = SIGTERM;
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	argc--, argv++;
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	if (!strcmp(*argv, "-l")) {
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		argc--, argv++;
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		if (argc > 0 && !strcmp(*argv, "--"))
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			argc--, argv++;
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		if (argc > 1)
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			usage();
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		if (argc == 1) {
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			if (!isdigit((unsigned char)**argv))
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				usage();
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			numsig = strtonum(*argv, 1, NSIG + 127, &errstr);
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			if (errstr != NULL) {
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				if (errno == ERANGE)
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					nosig(*argv);
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				errx(1, "illegal signal number: %s", *argv);
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			}
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			printf("%s\n", sys_signame[numsig & 127]);
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			exit(0);
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		}
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		printsignals(stdout);
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		exit(0);
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	}
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	if (!strcmp(*argv, "-s")) {
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		argc--, argv++;
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		if (argc > 0 && !strcmp(*argv, "--"))
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			argc--, argv++;
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		if (argc < 1) {
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			warnx("option requires an argument -- s");
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			usage();
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		}
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		if (strcmp(*argv, "0")) {
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			if ((numsig = signame_to_signum(*argv)) < 0)
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				nosig(*argv);
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		} else
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			numsig = 0;
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		argc--, argv++;
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	} else if (**argv == '-') {
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		if (strcmp(*argv, "--")) {
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			++*argv;
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			if (isalpha((unsigned char)**argv)) {
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				if ((numsig = signame_to_signum(*argv)) < 0)
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					nosig(*argv);
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			} else if (isdigit((unsigned char)**argv)) {
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				numsig = strtonum(*argv, 0, NSIG - 1, &errstr);
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				if (errstr != NULL) {
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					if (errno == ERANGE)
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						nosig(*argv);
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					errx(1, "illegal signal number: %s", *argv);
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				}
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			} else
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				nosig(*argv);
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		}
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		argc--, argv++;
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	}
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	if (argc == 0)
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		usage();
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	for (errors = 0; argc; argc--, argv++) {
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		pid = strtonum(*argv, -INT_MAX, INT_MAX, &errstr);
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		if (errstr != NULL) {
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			warnx("illegal process id: %s", *argv);
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			errors = 1;
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		} else if (kill(pid, numsig) == -1) {
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			warn("%s", *argv);
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			errors = 1;
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		}
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	}
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	exit(errors);
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}
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int
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signame_to_signum(char *sig)
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{
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	int n;
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	if (!strncasecmp(sig, "sig", 3))
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		sig += 3;
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	for (n = 1; n < NSIG; n++) {
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		if (!strcasecmp(sys_signame[n], sig))
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			return (n);
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	}
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	return (-1);
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}
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void
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nosig(char *name)
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{
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	warnx("unknown signal %s; valid signals:", name);
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	printsignals(stderr);
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	exit(1);
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}
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void
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printsignals(FILE *fp)
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{
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	int n;
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	for (n = 1; n < NSIG; n++) {
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		(void)fprintf(fp, "%s", sys_signame[n]);
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		if (n == (NSIG / 2) || n == (NSIG - 1))
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			(void)fprintf(fp, "\n");
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		else
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			(void)fprintf(fp, " ");
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	}
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}
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void
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usage(void)
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{
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	(void)fprintf(stderr, "usage: %s [-s signal_name] pid ...\n",
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	    __progname);
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	(void)fprintf(stderr, "       %s -l [exit_status]\n", __progname);
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	(void)fprintf(stderr, "       %s -signal_name pid ...\n",
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	    __progname);
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	(void)fprintf(stderr, "       %s -signal_number pid ...\n",
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	    __progname);
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	exit(1);
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}