summaryrefslogtreecommitdiff
path: root/procps/kill.c
blob: c1e8ca2e5e876a10edfb1ca429eb64436b5e0fc8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
/* 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 <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;
	const char *name;

#ifdef CONFIG_KILLALL
	/* Figure out what we are trying to do here */
	whichApp = (strcmp(applet_name, "killall") == 0)? KILLALL : KILL; 
#else
	whichApp = KILL;
#endif

	argc--;
	argv++;
	/* Parse any options */
	if (argc < 1)
		show_usage();

	while (argc > 0 && **argv == '-') {
		while (*++(*argv)) {
			switch (**argv) {
			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_and_die( "Could not kill pid '%d'", pid);
			argv++;
		}
	} 
#ifdef CONFIG_KILLALL
	else {
		int all_found = TRUE;
		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) {
				all_found = FALSE;
				error_msg_and_die( "%s: no process killed", *argv);
			}

			for(; pidList && *pidList!=0; pidList++) {
				if (*pidList==myPid)
					continue;
				if (kill(*pidList, sig) != 0) 
					perror_msg_and_die( "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++;
		}
		if (! all_found)
			return EXIT_FAILURE;
	}
#endif

	return EXIT_SUCCESS;
}