#include <boost/iostreams/filtering_streambuf.hpp>
#include <boost/iostreams/copy.hpp>
#include <boost/iostreams/device/file.hpp>

int main()
{
    using namespace boost::iostreams;
    file_sink   ofs("/dev/full");
    file_source ifs("/dev/zero");

    filtering_streambuf<output> filters(ofs);
    copy(ifs, filters);
}