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Serenity Operating System
1/*
2 * Copyright (c) 2020, Liav A. <liavalb@hotmail.co.il>
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/JsonArray.h>
28#include <AK/JsonObject.h>
29#include <AK/String.h>
30#include <LibCore/File.h>
31#include <stdio.h>
32
33int main(int argc, char** argv)
34{
35 UNUSED_PARAM(argc);
36 UNUSED_PARAM(argv);
37
38 if (pledge("stdio rpath", nullptr) < 0) {
39 perror("pledge");
40 return 1;
41 }
42
43 if (unveil("/proc/interrupts", "r") < 0) {
44 perror("unveil");
45 return 1;
46 }
47
48 unveil(nullptr, nullptr);
49
50 auto proc_interrupts = Core::File::construct("/proc/interrupts");
51 if (!proc_interrupts->open(Core::IODevice::ReadOnly)) {
52 fprintf(stderr, "Error: %s\n", proc_interrupts->error_string());
53 return 1;
54 }
55
56 if (pledge("stdio", nullptr) < 0) {
57 perror("pledge");
58 return 1;
59 }
60
61 printf("%-18s %-10s %-13s\n", "Device", "Interrupt", "Call Counter");
62 auto file_contents = proc_interrupts->read_all();
63 auto json = JsonValue::from_string(file_contents).as_array();
64 json.for_each([](auto& value) {
65 auto handler = value.as_object();
66 auto purpose = handler.get("purpose").to_string();
67 auto interrupt = handler.get("interrupt_line").to_string();
68 auto call_count = handler.get("call_count").to_string();
69
70 printf("%-18s %-10s %-13s\n",
71 purpose.characters(), interrupt.characters(), call_count.characters());
72 });
73
74 return 0;
75}