tape_read
HANDL(tape_read, 2, 2),
HANDL(tape_read, 3, 3),
HANDL(tape_read, 3, 4),
n = tape_read(session, &data[count]);
n = tape_read(session, session->ns_mover.md_buf);
n = tape_read(session, buf->tb_buffer_data);
static int tape_read(ndmpd_session_t *session, char *data);