busybox/kill.c

217 lines
4.5 KiB
C
Raw Normal View History

1999-10-21 03:38:37 +05:30
/*
* 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
*
*/
1999-10-05 21:54:54 +05:30
#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <signal.h>
1999-10-23 11:12:08 +05:30
#include <ctype.h>
1999-12-09 04:49:36 +05:30
#include <sys/stat.h>
#include <unistd.h>
static const char* kill_usage = "kill [-signal] process-id [process-id ...]\n\n"
"Send a signal (default is SIGTERM) to the specified process(es).\n\n"
"Options:\n"
"\t-l\tList all signal names and numbers.\n\n";
1999-10-05 21:54:54 +05:30
struct signal_name {
1999-10-13 03:56:06 +05:30
const char *name;
int number;
1999-10-05 21:54:54 +05:30
};
const struct signal_name signames[] = {
1999-10-13 03:56:06 +05:30
{"HUP", SIGHUP},
{"INT", SIGINT},
{"QUIT", SIGQUIT},
{"ILL", SIGILL},
{"TRAP", SIGTRAP},
{"ABRT", SIGABRT},
1999-10-05 21:54:54 +05:30
#ifndef __alpha__
1999-10-13 03:56:06 +05:30
{"IOT", SIGIOT},
1999-10-05 21:54:54 +05:30
#endif
#if defined(__sparc__) || defined(__alpha__)
1999-10-13 03:56:06 +05:30
{"EMT", SIGEMT},
1999-10-05 21:54:54 +05:30
#else
1999-10-13 03:56:06 +05:30
{"BUS", SIGBUS},
1999-10-05 21:54:54 +05:30
#endif
1999-10-13 03:56:06 +05:30
{"FPE", SIGFPE},
{"KILL", SIGKILL},
#if defined(__sparc__) || defined(__alpha__)
1999-10-13 03:56:06 +05:30
{"BUS", SIGBUS},
1999-10-05 21:54:54 +05:30
#else
1999-10-13 03:56:06 +05:30
{"USR1", SIGUSR1},
1999-10-05 21:54:54 +05:30
#endif
1999-10-13 03:56:06 +05:30
{"SEGV", SIGSEGV},
#if defined(__sparc__) || defined(__alpha__)
1999-10-13 03:56:06 +05:30
{"SYS", SIGSYS},
1999-10-05 21:54:54 +05:30
#else
1999-10-13 03:56:06 +05:30
{"USR2", SIGUSR2},
1999-10-05 21:54:54 +05:30
#endif
1999-10-13 03:56:06 +05:30
{"PIPE", SIGPIPE},
{"ALRM", SIGALRM},
{"TERM", SIGTERM},
#if defined(__sparc__) || defined(__alpha__)
1999-10-13 03:56:06 +05:30
{"URG", SIGURG},
{"STOP", SIGSTOP},
{"TSTP", SIGTSTP},
{"CONT", SIGCONT},
{"CHLD", SIGCHLD},
{"TTIN", SIGTTIN},
{"TTOU", SIGTTOU},
{"IO", SIGIO},
1999-10-05 21:54:54 +05:30
# ifndef __alpha__
1999-10-13 03:56:06 +05:30
{"POLL", SIGIO},
1999-10-05 21:54:54 +05:30
# endif
1999-10-13 03:56:06 +05:30
{"XCPU", SIGXCPU},
{"XFSZ", SIGXFSZ},
{"VTALRM", SIGVTALRM},
{"PROF", SIGPROF},
{"WINCH", SIGWINCH},
1999-10-05 21:54:54 +05:30
# ifdef __alpha__
1999-10-13 03:56:06 +05:30
{"INFO", SIGINFO},
1999-10-05 21:54:54 +05:30
# else
1999-10-13 03:56:06 +05:30
{"LOST", SIGLOST},
1999-10-05 21:54:54 +05:30
# endif
1999-10-13 03:56:06 +05:30
{"USR1", SIGUSR1},
{"USR2", SIGUSR2},
1999-10-05 21:54:54 +05:30
#else
1999-10-13 03:56:06 +05:30
{"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},
1999-10-05 21:54:54 +05:30
#endif
1999-10-13 03:56:06 +05:30
{0, 0}
1999-10-05 21:54:54 +05:30
};
1999-10-13 03:56:06 +05:30
extern int kill_main (int argc, char **argv)
1999-10-05 21:54:54 +05:30
{
1999-10-13 03:56:06 +05:30
int sig = SIGTERM;
1999-12-09 04:49:36 +05:30
argc--;
argv++;
/* Parse any options */
if (argc < 1)
usage(kill_usage);
1999-10-05 21:54:54 +05:30
1999-12-09 04:49:36 +05:30
while (argc > 0 && **argv == '-') {
while (*++(*argv)) {
switch (**argv) {
case 'l':
{
int col=0;
const struct signal_name *s = signames;
1999-10-13 03:56:06 +05:30
1999-12-09 04:49:36 +05:30
while (s->name != 0) {
col+=fprintf(stderr, "%2d) %-8s", s->number, (s++)->name);
if (col>60) {
fprintf(stderr, "\n");
col=0;
}
}
fprintf(stderr, "\n\n");
exit( TRUE);
}
break;
case '-':
usage(kill_usage);
default:
{
if (isdigit( **argv)) {
sig = atoi (*argv);
if (sig < 0 || sig >= NSIG)
goto end;
else {
argc--;
argv++;
goto do_it_now;
}
}
else {
const struct signal_name *s = signames;
while (s->name != 0) {
if (strcasecmp (s->name, *argv) == 0) {
sig = s->number;
argc--;
argv++;
goto do_it_now;
}
s++;
}
if (s->name == 0)
goto end;
}
1999-10-05 21:54:54 +05:30
}
1999-10-13 03:56:06 +05:30
}
1999-12-09 04:49:36 +05:30
argc--;
argv++;
1999-10-13 03:56:06 +05:30
}
}
1999-10-23 11:12:08 +05:30
1999-12-09 04:49:36 +05:30
do_it_now:
while (--argc >= 0) {
1999-12-09 04:49:36 +05:30
int pid;
struct stat statbuf;
char pidpath[20]="/proc/";
if (! isdigit( **argv)) {
fprintf(stderr, "bad PID: %s\n", *argv);
exit( FALSE);
}
pid = atoi (*argv);
snprintf(pidpath, 20, "/proc/%s/stat", *argv);
if (stat( pidpath, &statbuf)!=0) {
fprintf(stderr, "kill: (%d) - No such pid\n", pid);
exit( FALSE);
1999-10-05 21:54:54 +05:30
}
fprintf(stderr, "sig = %d\n", sig);
1999-12-09 04:49:36 +05:30
if (kill (pid, sig) != 0) {
perror (*argv);
exit ( FALSE);
}
argv++;
1999-10-13 03:56:06 +05:30
}
1999-12-09 04:49:36 +05:30
exit ( TRUE);
1999-10-23 11:12:08 +05:30
1999-10-13 03:56:06 +05:30
end:
1999-10-23 11:12:08 +05:30
fprintf(stderr, "bad signal name: %s\n", *argv);
1999-10-13 03:56:06 +05:30
exit (TRUE);
1999-10-05 21:54:54 +05:30
}
1999-10-23 11:12:08 +05:30