cleanfifo
cleanfifo("testfifo", -1, -1);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", -1, -1);
cleanfifo("testfifo", -1, -1);
cleanfifo("testfifo", -1, -1);
cleanfifo("testfifo", -1, -1);
cleanfifo("testfifo", -1, -1);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", -1, -1);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", reader_fd, writer_fd);
cleanfifo("testfifo", -1, -1);