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kill.c revision 1.3 
      1 /*
      2  * Copyright (c) 1988 Regents of the University of California.
      3  * 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 char copyright[] =
     36 "@(#) Copyright (c) 1988 Regents of the University of California.\n\
     37  All rights reserved.\n";
     38 #endif /* not lint */
     39 
     40 #ifndef lint
     41 static char sccsid[] = "@(#)kill.c	5.3 (Berkeley) 7/1/91";
     42 static char rcsid[] = "$Header: /tank/opengrok/rsync2/NetBSD/src/bin/kill/kill.c,v 1.3 1993/03/23 00:25:54 cgd Exp $";
     43 #endif /* not lint */
     44 
     45 #include <signal.h>
     46 #include <errno.h>
     47 #include <stdio.h>
     48 #include <stdlib.h>
     49 #include <string.h>
     50 #include <ctype.h>
     51 
     52 static char *signals[] = {
     53 	"hup", "int", "quit", "ill", "trap", "iot",		/*  1 - 6  */
     54 	"emt", "fpe", "kill", "bus", "segv", "sys",		/*  7 - 12 */
     55 	"pipe", "alrm",  "term", "urg", "stop", "tstp",		/* 13 - 18 */
     56 	"cont", "chld", "ttin", "ttou", "io", "xcpu",		/* 19 - 24 */
     57 	"xfsz", "vtalrm", "prof", "winch", "info", "usr1",	/* 25 - 30 */
     58 	"usr2", NULL,						/* 31 - 32 */
     59 };
     60 
     61 main(argc, argv)
     62 	int argc;
     63 	char **argv;
     64 {
     65 	register int errors, numsig, pid;
     66 	register char **p;
     67 	char *ep;
     68 
     69 	if (argc < 2)
     70 		usage();
     71 
     72 	if (!strcmp(*++argv, "-l")) {
     73 		printsig(stdout);
     74 		exit(0);
     75 	}
     76 
     77 	numsig = SIGTERM;
     78 	if (**argv == '-') {
     79 		++*argv;
     80 		if (isalpha(**argv)) {
     81 			if (!strncasecmp(*argv, "sig", 3))
     82 				*argv += 3;
     83 			for (p = signals;; ++p) {
     84 				if (!*p)
     85 					nosig(*argv);
     86 				if (!strcasecmp(*p, *argv)) {
     87 					numsig = p - signals + 1;
     88 					break;
     89 				}
     90 			}
     91 		} else if (isdigit(**argv)) {
     92 			numsig = strtol(*argv, &ep, 10);
     93 			if (!*argv || *ep) {
     94 				(void)fprintf(stderr,
     95 				    "kill: illegal signal number %s\n", *argv);
     96 				exit(1);
     97 			}
     98 			if (numsig <= 0 || numsig > NSIG)
     99 				nosig(*argv);
    100 		} else
    101 			nosig(*argv);
    102 		++argv;
    103 	}
    104 
    105 	if (!*argv)
    106 		usage();
    107 
    108 	for (errors = 0; *argv; ++argv) {
    109 		pid = strtol(*argv, &ep, 10);
    110 		if (!*argv || *ep) {
    111 			(void)fprintf(stderr,
    112 			    "kill: illegal process id %s\n", *argv);
    113 			continue;
    114 		}
    115 		if (kill(pid, numsig) == -1) {
    116 			(void)fprintf(stderr,
    117 			    "kill: %s: %s\n", *argv, strerror(errno));
    118 			errors = 1;
    119 		}
    120 	}
    121 	exit(errors);
    122 }
    123 
    124 nosig(name)
    125 	char *name;
    126 {
    127 	(void)fprintf(stderr,
    128 	    "kill: unknown signal %s; valid signals:\n", name);
    129 	printsig(stderr);
    130 	exit(1);
    131 }
    132 
    133 printsig(fp)
    134 	FILE *fp;
    135 {
    136 	register char **p;
    137 
    138 	for (p = signals; *p; ++p) {
    139 		(void)fprintf(fp, "%s ", *p);
    140 		if ((p - signals) == NSIG / 2 - 1)
    141 			(void)fprintf(fp, "\n");
    142 	}
    143 	(void)fprintf(fp, "\n");
    144 }
    145 
    146 usage()
    147 {
    148 	(void)fprintf(stderr, "usage: kill [-l] [-sig] pid ...\n");
    149 	exit(1);
    150 }
    151