+static
+void
+make_empty_file(boost::filesystem::path file, off_t size)
+{
+ auto fd = open (file.string().c_str(), O_RDWR | O_CREAT, S_IRUSR | S_IWUSR);
+ BOOST_REQUIRE (fd != -1);
+ auto const r = posix_fallocate (fd, 0, size);
+ BOOST_REQUIRE_EQUAL (r, 0);
+ close (fd);
+}
+
+