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104 lines
3.1 KiB
C++
104 lines
3.1 KiB
C++
/*
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* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/ByteBuffer.h>
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#include <AK/JsonArray.h>
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#include <AK/JsonObject.h>
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#include <AK/String.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/File.h>
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#include <LibPCIDB/Database.h>
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#include <stdio.h>
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#include <unistd.h>
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static bool flag_show_numerical = false;
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static const char* format_numerical = "{:04x}:{:02x}:{:02x}.{} {}: {}:{} (rev {:02x})";
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static const char* format_textual = "{:04x}:{:02x}:{:02x}.{} {}: {} {} (rev {:02x})";
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int main(int argc, char** argv)
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{
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if (pledge("stdio rpath", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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if (unveil("/res/pci.ids", "r") < 0) {
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perror("unveil");
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return 1;
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}
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if (unveil("/proc/pci", "r") < 0) {
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perror("unveil");
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return 1;
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}
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unveil(nullptr, nullptr);
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Core::ArgsParser args_parser;
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args_parser.set_general_help("List PCI devices.");
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args_parser.add_option(flag_show_numerical, "Show numerical IDs", "numerical", 'n');
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args_parser.parse(argc, argv);
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const char* format = flag_show_numerical ? format_numerical : format_textual;
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RefPtr<PCIDB::Database> db;
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if (!flag_show_numerical) {
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db = PCIDB::Database::open();
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if (!db) {
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warnln("Couldn't open PCI ID database");
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flag_show_numerical = true;
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}
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}
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auto proc_pci = Core::File::construct("/proc/pci");
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if (!proc_pci->open(Core::OpenMode::ReadOnly)) {
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fprintf(stderr, "Error: %s\n", proc_pci->error_string());
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return 1;
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}
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if (pledge("stdio", nullptr) < 0) {
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perror("pledge");
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return 1;
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}
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auto file_contents = proc_pci->read_all();
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auto json = JsonValue::from_string(file_contents);
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VERIFY(json.has_value());
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json.value().as_array().for_each([db, format](auto& value) {
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auto dev = value.as_object();
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auto seg = dev.get("seg").to_u32();
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auto bus = dev.get("bus").to_u32();
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auto device = dev.get("device").to_u32();
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auto function = dev.get("function").to_u32();
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auto vendor_id = dev.get("vendor_id").to_u32();
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auto device_id = dev.get("device_id").to_u32();
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auto revision_id = dev.get("revision_id").to_u32();
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auto class_id = dev.get("class").to_u32();
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auto subclass_id = dev.get("subclass").to_u32();
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String vendor_name;
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String device_name;
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String class_name;
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if (db) {
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vendor_name = db->get_vendor(vendor_id);
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device_name = db->get_device(vendor_id, device_id);
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class_name = db->get_class(class_id);
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}
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if (vendor_name.is_empty())
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vendor_name = String::formatted("{:04x}", vendor_id);
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if (device_name.is_empty())
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device_name = String::formatted("{:04x}", device_id);
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if (class_name.is_empty())
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class_name = String::formatted("{:02x}{:02x}", class_id, subclass_id);
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outln(format, seg, bus, device, function, class_name, vendor_name, device_name, revision_id);
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});
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return 0;
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}
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