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Userland: Introduce the lsblk utility to show list of storage devices

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Liav A 2022-06-10 10:05:39 +03:00 • committed by Andreas Kling
parent 1dbd32488f
commit a660040806
3 changed files with 95 additions and 0 deletions
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Userland/Utilities/lsblk.cpp Normal file
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/*
* Copyright (c) 2022, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/Hex.h>
#include <AK/String.h>
#include <AK/StringView.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/DirIterator.h>
#include <LibCore/File.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
static constexpr StringView format_row = "{:10s}\t{:10s}\t{:10s}\t{:10s}\t{:10s}"sv;
ErrorOr<int> serenity_main(Main::Arguments arguments)
{
TRY(Core::System::pledge("stdio rpath"));
TRY(Core::System::unveil("/sys/devices/storage", "r"));
TRY(Core::System::unveil(nullptr, nullptr));
Core::ArgsParser args_parser;
args_parser.set_general_help("List Storage (Block) devices.");
args_parser.parse(arguments);
Core::DirIterator di("/sys/devices/storage/", Core::DirIterator::SkipParentAndBaseDir);
if (di.has_error()) {
warnln("Failed to open /sys/devices/storage - {}", di.error());
return 1;
}
outln(format_row, "LUN"sv, "Interface type"sv, "Command set"sv, "Block Size"sv, "Last LBA"sv);
TRY(Core::System::pledge("stdio rpath"));
while (di.has_next()) {
auto dir = di.next_path();
auto command_set_file = Core::File::construct(String::formatted("/sys/devices/storage/{}/command_set", dir));
if (!command_set_file->open(Core::OpenMode::ReadOnly)) {
dbgln("Error: Could not open {}: {}", command_set_file->name(), command_set_file->error_string());
continue;
}
auto interface_type_file = Core::File::construct(String::formatted("/sys/devices/storage/{}/interface_type", dir));
if (!interface_type_file->open(Core::OpenMode::ReadOnly)) {
dbgln("Error: Could not open {}: {}", interface_type_file->name(), interface_type_file->error_string());
continue;
}
auto last_lba_file = Core::File::construct(String::formatted("/sys/devices/storage/{}/last_lba", dir));
if (!last_lba_file->open(Core::OpenMode::ReadOnly)) {
dbgln("Error: Could not open {}: {}", last_lba_file->name(), last_lba_file->error_string());
continue;
}
auto sector_size_file = Core::File::construct(String::formatted("/sys/devices/storage/{}/sector_size", dir));
if (!sector_size_file->open(Core::OpenMode::ReadOnly)) {
dbgln("Error: Could not open {}: {}", sector_size_file->name(), sector_size_file->error_string());
continue;
}
String command_set = StringView(command_set_file->read_all().bytes());
String interface_type = StringView(interface_type_file->read_all().bytes());
String last_lba = StringView(last_lba_file->read_all().bytes());
String sector_size = StringView(sector_size_file->read_all().bytes());
outln(format_row, dir, interface_type, command_set, sector_size, last_lba);
}
return 0;
}