1/* vi: set sw=4 ts=4: */
2/*
3 * Mini kill/killall implementation for busybox
4 *
5 * Copyright (C) 1995, 1996 by Bruce Perens <bruce@pixar.com>.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 *
21 */
22
23
24#include <stdio.h>
25#include <stdlib.h>
26#include <errno.h>
27#include <unistd.h>
28#include <signal.h>
29#include <ctype.h>
30#include <string.h>
31#include <unistd.h>
32#include "busybox.h"
33
34static const int KILL = 0;
35static const int KILLALL = 1;
36
37
38extern int kill_main(int argc, char **argv)
39{
40	int whichApp, sig = SIGTERM;
41	const char *name;
42
43#ifdef BB_KILLALL
44	/* Figure out what we are trying to do here */
45	whichApp = (strcmp(applet_name, "killall") == 0)? KILLALL : KILL;
46#else
47	whichApp = KILL;
48#endif
49
50	argc--;
51	argv++;
52	/* Parse any options */
53	if (argc < 1)
54		show_usage();
55
56	while (argc > 0 && **argv == '-') {
57		while (*++(*argv)) {
58			switch (**argv) {
59			case 'l':
60				if(argc>1) {
61					for(argv++; *argv; argv++) {
62						name = u_signal_names(*argv, &sig, -1);
63						if(name!=NULL)
64							printf("%s\n", name);
65					}
66				} else {
67					int col = 0;
68					for(sig=1; sig < NSIG; sig++) {
69						name = u_signal_names(0, &sig, 1);
70						if(name==NULL)  /* unnamed */
71							continue;
72						col += printf("%2d) %-16s", sig, name);
73						if (col > 60) {
74							printf("\n");
75							col = 0;
76						}
77					}
78					printf("\n");
79				}
80				return EXIT_SUCCESS;
81			case '-':
82				show_usage();
83			default:
84				name = u_signal_names(*argv, &sig, 0);
85				if(name==NULL)
86					error_msg_and_die( "bad signal name: %s", *argv);
87								argc--;
88								argv++;
89								goto do_it_now;
90							}
91			argc--;
92			argv++;
93		}
94	}
95
96  do_it_now:
97
98	if (whichApp == KILL) {
99		/* Looks like they want to do a kill. Do that */
100		while (--argc >= 0) {
101			int pid;
102
103			if (!isdigit(**argv))
104				perror_msg_and_die( "Bad PID");
105			pid = strtol(*argv, NULL, 0);
106			if (kill(pid, sig) != 0)
107				perror_msg_and_die( "Could not kill pid '%d'", pid);
108			argv++;
109		}
110	}
111#ifdef BB_KILLALL
112	else {
113		int all_found = TRUE;
114		pid_t myPid=getpid();
115		/* Looks like they want to do a killall.  Do that */
116		while (--argc >= 0) {
117			pid_t* pidList;
118
119			pidList = find_pid_by_name( *argv);
120			if (!pidList || *pidList<=0) {
121				all_found = FALSE;
122				error_msg_and_die( "%s: no process killed", *argv);
123			}
124
125			for(; pidList && *pidList!=0; pidList++) {
126				if (*pidList==myPid)
127					continue;
128				if (kill(*pidList, sig) != 0)
129					perror_msg_and_die( "Could not kill pid '%d'", *pidList);
130			}
131			/* Note that we don't bother to free the memory
132			 * allocated in find_pid_by_name().  It will be freed
133			 * upon exit, so we can save a byte or two */
134			argv++;
135		}
136		if (all_found == FALSE)
137			return EXIT_FAILURE;
138	}
139#endif
140
141	return EXIT_SUCCESS;
142}
143