//  Copyright 2024 Andrey Semashev

//  Distributed under the Boost Software License, Version 1.0.
//  See http://www.boost.org/LICENSE_1_0.txt

//  See library home page at http://www.boost.org/libs/filesystem

#include "platform_config.hpp"

#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>

int main()
{
    int fd = open("file.txt", O_CREAT | O_TRUNC | O_WRONLY, S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
    int err = fallocate(fd, FALLOC_FL_KEEP_SIZE, 0, 4096);
    return err != 0;
}