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Serenity Operating System
1/*
2 * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this
9 * list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice,
12 * this list of conditions and the following disclaimer in the documentation
13 * and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
22 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
23 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include <AK/String.h>
28#include <LibCore/ProcessStatisticsReader.h>
29#include <signal.h>
30#include <stdio.h>
31#include <stdlib.h>
32#include <unistd.h>
33
34static void print_usage_and_exit()
35{
36 printf("usage: killall [-signal] process_name\n");
37 exit(1);
38}
39
40static int kill_all(const String& process_name, const unsigned signum)
41{
42 auto processes = Core::ProcessStatisticsReader().get_all();
43
44 for (auto& it : processes) {
45 if (it.value.name == process_name) {
46 int ret = kill(it.value.pid, signum);
47 if (ret < 0)
48 perror("kill");
49 }
50 }
51
52 return 0;
53}
54
55int main(int argc, char** argv)
56{
57 bool ok;
58 unsigned signum = SIGTERM;
59 int name_argi = 1;
60
61 if (argc != 2 && argc != 3)
62 print_usage_and_exit();
63
64 if (argc == 3) {
65 name_argi = 2;
66
67 if (argv[1][0] != '-')
68 print_usage_and_exit();
69
70 signum = String(&argv[1][1]).to_uint(ok);
71 if (!ok) {
72 printf("'%s' is not a valid signal number\n", &argv[1][1]);
73 return 2;
74 }
75 }
76
77 return kill_all(argv[name_argi], signum);
78}