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/* vi: set sw=4 ts=4: */
/*
* Mini kill/killall 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
*
*/
#include "internal.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <signal.h>
#include <ctype.h>
#include <sys/stat.h>
#include <unistd.h>
static const char *kill_usage =
"kill [-signal] process-id [process-id ...]\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
"\nSend a signal (default is SIGTERM) to the specified process(es).\n\n"
"Options:\n" "\t-l\tList all signal names and numbers.\n\n"
#endif
;
#ifdef BB_KILLALL
static const char *killall_usage =
"killall [-signal] process-name [process-name ...]\n"
#ifndef BB_FEATURE_TRIVIAL_HELP
"\nSend a signal (default is SIGTERM) to the specified process(es).\n\n"
"Options:\n" "\t-l\tList all signal names and numbers.\n\n"
#endif
#endif
;
#define KILL 0
#define KILLALL 1
struct signal_name {
const char *name;
int number;
};
const struct signal_name signames[] = {
/* Everything, order not important */
{"HUP", SIGHUP},
{"INT", SIGINT},
{"QUIT", SIGQUIT},
{"ILL", SIGILL},
{"TRAP", SIGTRAP},
{"ABRT", SIGABRT},
{"FPE", SIGFPE},
{"KILL", SIGKILL},
{"SEGV", SIGSEGV},
{"PIPE", SIGPIPE},
{"ALRM", SIGALRM},
{"TERM", SIGTERM},
{"BUS", SIGBUS},
{"USR1", SIGUSR1},
{"USR2", SIGUSR2},
{"STOP", SIGSTOP},
{"CONT", SIGCONT},
{"TTIN", SIGTTIN},
{"TTOU", SIGTTOU},
{"IO", SIGIO},
{"TSTP", SIGTSTP},
{"CHLD", SIGCHLD},
{"XCPU", SIGXCPU},
{"XFSZ", SIGXFSZ},
{"PROF", SIGPROF},
{"WINCH", SIGWINCH},
{"URG", SIGURG},
{"VTALRM", SIGVTALRM},
#ifndef __alpha__
/* everything except alpha */
{"IOT", SIGIOT},
{"POLL", SIGPOLL},
#endif
#if defined(__sparc__) || defined(__alpha__) || defined(__mips__)
/* everthing except intel */
{"EMT", SIGEMT},
{"SYS", SIGSYS},
# ifdef __alpha__
/* alpha only */
{"LOST", SIGLOST},
#endif
#ifdef __sparc__
/* space only */
{"INFO", SIGINFO},
#endif
#ifdef __mips__
/* mips only */
{"CLD", SIGCLD},
{"PWR", SIGPWR},
#endif
#else
/* intel only */
{"STKFLT", SIGSTKFLT},
{"PWR", SIGPWR},
{"UNUSED", SIGUNUSED},
#endif
{0, 0}
};
extern int kill_main(int argc, char **argv)
{
int whichApp, sig = SIGTERM;
const char *appUsage;
#ifdef BB_KILLALL
/* Figure out what we are trying to do here */
whichApp = (strcmp(*argv, "killall") == 0)?
KILLALL : KILL;
appUsage = (whichApp == KILLALL)? killall_usage : kill_usage;
#else
whichApp = KILL;
appUsage = kill_usage;
#endif
argc--;
argv++;
/* Parse any options */
if (argc < 1)
usage(appUsage);
while (argc > 0 && **argv == '-') {
while (*++(*argv)) {
switch (**argv) {
case 'l':
{
int col = 0;
const struct signal_name *s = signames;
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(appUsage);
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;
}
}
}
argc--;
argv++;
}
}
do_it_now:
if (whichApp == KILL) {
/* Looks like they want to do a kill. Do that */
while (--argc >= 0) {
int pid;
if (!isdigit(**argv))
fatalError( "Bad PID: %s\n", strerror(errno));
pid = strtol(*argv, NULL, 0);
if (kill(pid, sig) != 0)
fatalError( "Could not kill pid '%d': %s\n", pid, strerror(errno));
argv++;
}
}
#ifdef BB_KILLALL
else {
int all_found = TRUE;
pid_t myPid=getpid();
/* Looks like they want to do a killall. Do that */
while (--argc >= 0) {
pid_t* pidList;
pidList = findPidByName( *argv);
if (!pidList) {
all_found = FALSE;
errorMsg( "%s: no process killed\n", *argv);
}
for(; pidList && *pidList!=0; pidList++) {
if (*pidList==myPid)
continue;
if (kill(*pidList, sig) != 0)
fatalError( "Could not kill pid '%d': %s\n", *pidList, strerror(errno));
}
/* Note that we don't bother to free the memory
* allocated in findPidByName(). It will be freed
* upon exit, so we can save a byte or two */
argv++;
}
exit (all_found);
}
#endif
exit(TRUE);
end:
fatalError( "bad signal name: %s\n", *argv);
}
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