mirror of
https://github.com/sheumann/hush.git
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251 lines
5.3 KiB
C
251 lines
5.3 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* Mini kill/killall implementation for busybox
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*
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* Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include "internal.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <unistd.h>
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#include <signal.h>
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#include <ctype.h>
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#include <sys/stat.h>
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#include <unistd.h>
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static const char *kill_usage =
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"kill [-signal] process-id [process-id ...]\n\n"
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"Send a signal (default is SIGTERM) to the specified process(es).\n\n"
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"Options:\n" "\t-l\tList all signal names and numbers.\n\n";
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#ifdef BB_KILLALL
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static const char *killall_usage =
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"killall [-signal] process-name [process-name ...]\n\n"
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"Send a signal (default is SIGTERM) to the specified process(es).\n\n"
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"Options:\n" "\t-l\tList all signal names and numbers.\n\n";
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#endif
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#define KILL 0
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#define KILLALL 1
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struct signal_name {
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const char *name;
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int number;
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};
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const struct signal_name signames[] = {
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{"HUP", SIGHUP},
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{"INT", SIGINT},
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{"QUIT", SIGQUIT},
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{"ILL", SIGILL},
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{"TRAP", SIGTRAP},
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{"ABRT", SIGABRT},
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#ifndef __alpha__
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{"IOT", SIGIOT},
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#endif
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#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},
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{"KILL", SIGKILL},
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#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},
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#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},
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{"ALRM", SIGALRM},
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{"TERM", SIGTERM},
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#if defined(__sparc__) || defined(__alpha__)
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{"URG", SIGURG},
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{"STOP", SIGSTOP},
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{"TSTP", SIGTSTP},
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{"CONT", SIGCONT},
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{"CHLD", SIGCHLD},
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{"TTIN", SIGTTIN},
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{"TTOU", SIGTTOU},
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{"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},
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{"XFSZ", SIGXFSZ},
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{"VTALRM", SIGVTALRM},
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{"PROF", SIGPROF},
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{"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},
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{"USR2", SIGUSR2},
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#else
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{"STKFLT", SIGSTKFLT},
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{"CHLD", SIGCHLD},
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{"CONT", SIGCONT},
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{"STOP", SIGSTOP},
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{"TSTP", SIGTSTP},
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{"TTIN", SIGTTIN},
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{"TTOU", SIGTTOU},
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{"URG", SIGURG},
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{"XCPU", SIGXCPU},
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{"XFSZ", SIGXFSZ},
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{"VTALRM", SIGVTALRM},
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{"PROF", SIGPROF},
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{"WINCH", SIGWINCH},
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{"IO", SIGIO},
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{"POLL", SIGPOLL},
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{"PWR", SIGPWR},
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{"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 whichApp, sig = SIGTERM;
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const char *appUsage;
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#ifdef BB_KILLALL
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/* Figure out what we are trying to do here */
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whichApp = (strcmp(*argv, "killall") == 0)?
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KILLALL : KILL;
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appUsage = (whichApp == KILLALL)? killall_usage : kill_usage;
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#else
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whichApp = KILL;
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appUsage = kill_usage;
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#endif
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argc--;
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argv++;
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/* Parse any options */
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if (argc < 1)
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usage(appUsage);
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while (argc > 0 && **argv == '-') {
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while (*++(*argv)) {
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switch (**argv) {
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case 'l':
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{
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int col = 0;
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const struct signal_name *s = signames;
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while (s->name != 0) {
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col +=
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fprintf(stderr, "%2d) %-8s", s->number,
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(s++)->name);
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if (col > 60) {
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fprintf(stderr, "\n");
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col = 0;
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}
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}
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fprintf(stderr, "\n\n");
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exit(TRUE);
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}
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break;
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case '-':
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usage(appUsage);
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default:
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{
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if (isdigit(**argv)) {
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sig = atoi(*argv);
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if (sig < 0 || sig >= NSIG)
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goto end;
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else {
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argc--;
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argv++;
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goto do_it_now;
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}
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} else {
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const struct signal_name *s = signames;
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while (s->name != 0) {
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if (strcasecmp(s->name, *argv) == 0) {
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sig = s->number;
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argc--;
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argv++;
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goto do_it_now;
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}
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s++;
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}
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if (s->name == 0)
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goto end;
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}
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}
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}
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argc--;
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argv++;
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}
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}
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do_it_now:
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if (whichApp == KILL) {
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/* Looks like they want to do a kill. Do that */
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while (--argc >= 0) {
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int pid;
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if (!isdigit(**argv))
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fatalError( "Bad PID: %s\n", strerror(errno));
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pid = strtol(*argv, NULL, 0);
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if (kill(pid, sig) != 0)
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fatalError( "Could not kill pid '%d': %s\n", pid, strerror(errno));
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argv++;
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}
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}
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#ifdef BB_KILLALL
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else {
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pid_t myPid=getpid();
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/* Looks like they want to do a killall. Do that */
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while (--argc >= 0) {
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pid_t* pidList;
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pidList = findPidByName( *argv);
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for(; pidList && *pidList!=0; pidList++) {
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if (*pidList==myPid)
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continue;
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if (kill(*pidList, sig) != 0)
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fatalError( "Could not kill pid '%d': %s\n", *pidList, strerror(errno));
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}
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/* Note that we don't bother to free the memory
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* allocated in findPidByName(). It will be freed
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* upon exit, so we can save a byte or two */
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argv++;
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}
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}
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#endif
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exit(TRUE);
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end:
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fatalError( "bad signal name: %s\n", *argv);
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}
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