3.5.4 Open Flags ---------------- Moreover, the following flags are available: `sync' All i/o operations are done synchronously `nodelay' The device or file is opened with the O_NDELAY flag. This is needed on some non-Linux architectures. `exclusive' The device or file is opened with the O_EXCL flag. On Linux, this ensures exclusive access to the floppy drive. On most other architectures, and for plain files it has no effect at all.