/* vi: set sw=4 ts=4: *//* * Mini kill/killall implementation for busybox * * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>. * Copyright (C) 1999-2002 by Erik Andersen <andersee@debian.org> * * 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 <stdio.h>#include <stdlib.h>#include <errno.h>#include <unistd.h>#include <signal.h>#include <ctype.h>#include <string.h>#include <unistd.h>#include "busybox.h"static const int KILL = 0;static const int KILLALL = 1;extern int kill_main(int argc, char **argv){	int whichApp, sig = SIGTERM, quiet, errors;	const char *name;#ifdef BB_KILLALL	/* Figure out what we are trying to do here */	whichApp = (strcmp(applet_name, "killall") == 0)? KILLALL : KILL; #else	whichApp = KILL;#endif	errors=0;	quiet=0;	argc--;	argv++;	/* Parse any options */	if (argc < 1)		show_usage();	while (argc > 0 && **argv == '-') {		while (*++(*argv)) {			switch (**argv) {#ifdef BB_KILLALL				case 'q':					quiet++;					break;#endif				case 'l':					if(argc>1) {						for(argv++; *argv; argv++) {							name = u_signal_names(*argv, &sig, -1);							if(name!=NULL)								printf("%s\n", name);						}					} else {						int col = 0;						for(sig=1; sig < NSIG; sig++) {							name = u_signal_names(0, &sig, 1);							if(name==NULL)  /* unnamed */								continue;							col += printf("%2d) %-16s", sig, name);							if (col > 60) {								printf("\n");								col = 0;							}						}						printf("\n");					}					return EXIT_SUCCESS;				case '-':					show_usage();				default:					name = u_signal_names(*argv, &sig, 0);					if(name==NULL)						error_msg_and_die( "bad signal name: %s", *argv);					argc--;					argv++;					goto do_it_now;			}			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))				perror_msg_and_die( "Bad PID");			pid = strtol(*argv, NULL, 0);			if (kill(pid, sig) != 0) {				perror_msg( "Could not kill pid '%d'", pid);				errors++;			}			argv++;		}	} #ifdef BB_KILLALL	else {		pid_t myPid=getpid();		/* Looks like they want to do a killall.  Do that */		while (--argc >= 0) {			long* pidList;			pidList = find_pid_by_name(*argv);			if (!pidList || *pidList<=0) {				errors++;				if (!quiet)					error_msg( "%s: no process killed", *argv);			} else {				for(; *pidList!=0; pidList++) {					if (*pidList==myPid)						continue;					if (kill(*pidList, sig) != 0) {						errors++;						if (!quiet)							perror_msg( "Could not kill pid '%d'", *pidList);					}				}			}			/* Note that we don't bother to free the memory			 * allocated in find_pid_by_name().  It will be freed			 * upon exit, so we can save a byte or two */			argv++;		}	}#endif	return errors;}