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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/ByteBuffer.h>
#include <AK/JsonArray.h>
#include <AK/JsonObject.h>
#include <AK/NumberFormat.h>
#include <AK/String.h>
#include <AK/Vector.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <fcntl.h>
#include <inttypes.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
static bool flag_human_readable = false;
struct FileSystem {
String fs;
size_t total_block_count { 0 };
size_t free_block_count { 0 };
size_t total_inode_count { 0 };
size_t free_inode_count { 0 };
size_t block_size { 0 };
String mount_point;
};
int main(int argc, char** argv)
{
Core::ArgsParser args_parser;
args_parser.set_general_help("Display free disk space of each partition.");
args_parser.add_option(flag_human_readable, "Print human-readable sizes", "human-readable", 'h');
args_parser.parse(argc, argv);
auto file = Core::File::construct("/proc/df");
if (!file->open(Core::IODevice::ReadOnly)) {
fprintf(stderr, "Failed to open /proc/df: %s\n", file->error_string());
return 1;
}
if (flag_human_readable) {
printf("Filesystem Size Used Available Mount point\n");
} else {
printf("Filesystem Blocks Used Available Mount point\n");
}
auto file_contents = file->read_all();
auto json_result = JsonValue::from_string(file_contents);
VERIFY(json_result.has_value());
auto json = json_result.value().as_array();
json.for_each([](auto& value) {
auto fs_object = value.as_object();
auto fs = fs_object.get("class_name").to_string();
auto total_block_count = fs_object.get("total_block_count").to_u64();
auto free_block_count = fs_object.get("free_block_count").to_u64();
[[maybe_unused]] auto total_inode_count = fs_object.get("total_inode_count").to_u64();
[[maybe_unused]] auto free_inode_count = fs_object.get("free_inode_count").to_u64();
auto block_size = fs_object.get("block_size").to_u64();
auto mount_point = fs_object.get("mount_point").to_string();
printf("%-10s", fs.characters());
if (flag_human_readable) {
printf("%10s ", human_readable_size(total_block_count * block_size).characters());
printf("%10s ", human_readable_size((total_block_count - free_block_count) * block_size).characters());
printf("%10s ", human_readable_size(free_block_count * block_size).characters());
} else {
printf("%10" PRIu64 " ", total_block_count);
printf("%10" PRIu64 " ", total_block_count - free_block_count);
printf("%10" PRIu64 " ", free_block_count);
}
printf("%s", mount_point.characters());
printf("\n");
});
return 0;
}
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