hush/kill.c

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/*
* Mini kill implementation for busybox
*
* Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
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#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
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#include <ctype.h>
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const char kill_usage[] = "kill [-signal] process-id [process-id ...]\n";
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struct signal_name {
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const char *name;
int number;
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};
const struct signal_name signames[] = {
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{"HUP", SIGHUP},
{"INT", SIGINT},
{"QUIT", SIGQUIT},
{"ILL", SIGILL},
{"TRAP", SIGTRAP},
{"ABRT", SIGABRT},
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#ifndef __alpha__
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{"IOT", SIGIOT},
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#endif
#if defined(__sparc__) || defined(__alpha__)
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{"EMT", SIGEMT},
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#else
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{"BUS", SIGBUS},
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#endif
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{"FPE", SIGFPE},
{"KILL", SIGKILL},
#if defined(__sparc__) || defined(__alpha__)
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{"BUS", SIGBUS},
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#else
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{"USR1", SIGUSR1},
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#endif
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{"SEGV", SIGSEGV},
#if defined(__sparc__) || defined(__alpha__)
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{"SYS", SIGSYS},
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#else
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{"USR2", SIGUSR2},
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#endif
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{"PIPE", SIGPIPE},
{"ALRM", SIGALRM},
{"TERM", SIGTERM},
#if defined(__sparc__) || defined(__alpha__)
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{"URG", SIGURG},
{"STOP", SIGSTOP},
{"TSTP", SIGTSTP},
{"CONT", SIGCONT},
{"CHLD", SIGCHLD},
{"TTIN", SIGTTIN},
{"TTOU", SIGTTOU},
{"IO", SIGIO},
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# ifndef __alpha__
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{"POLL", SIGIO},
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# endif
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{"XCPU", SIGXCPU},
{"XFSZ", SIGXFSZ},
{"VTALRM", SIGVTALRM},
{"PROF", SIGPROF},
{"WINCH", SIGWINCH},
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# ifdef __alpha__
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{"INFO", SIGINFO},
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# else
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{"LOST", SIGLOST},
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# endif
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{"USR1", SIGUSR1},
{"USR2", SIGUSR2},
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#else
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{"STKFLT", SIGSTKFLT},
{"CHLD", SIGCHLD},
{"CONT", SIGCONT},
{"STOP", SIGSTOP},
{"TSTP", SIGTSTP},
{"TTIN", SIGTTIN},
{"TTOU", SIGTTOU},
{"URG", SIGURG},
{"XCPU", SIGXCPU},
{"XFSZ", SIGXFSZ},
{"VTALRM", SIGVTALRM},
{"PROF", SIGPROF},
{"WINCH", SIGWINCH},
{"IO", SIGIO},
{"POLL", SIGPOLL},
{"PWR", SIGPWR},
{"UNUSED", SIGUNUSED},
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#endif
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{0, 0}
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};
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extern int kill_main (int argc, char **argv)
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{
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int sig = SIGTERM;
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if ( argc < 2 )
usage (kill_usage);
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if ( **(argv+1) == '-' ) {
if (isdigit( *(*(++argv)+1) )) {
sig = atoi (*argv);
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if (sig < 0 || sig >= NSIG)
goto end;
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}
else {
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const struct signal_name *s = signames;
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while (s->name != 0) {
if (strcasecmp (s->name, *argv+1) == 0) {
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sig = s->number;
break;
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}
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s++;
}
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if (s->name == 0)
goto end;
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}
}
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while (--argc > 1) {
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int pid;
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if (! isdigit( **(++argv))) {
fprintf(stderr, "bad PID: %s\n", *argv);
exit( FALSE);
}
pid = atoi (*argv);
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if (kill (pid, sig) != 0) {
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perror (*argv);
exit ( FALSE);
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}
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}
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end:
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fprintf(stderr, "bad signal name: %s\n", *argv);
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exit (TRUE);
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}
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