POSIX has
[ENOTTY] Inappropriate I/O control operation
A control function was attempted for a file or special file
for which the operation was inappropriate.
which is quite a nice way of putting it.
--Malcolm
-- Malcolm Beattie <mbeattie@sable.ox.ac.uk> Unix Systems Programmer Oxford University Computing Services - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/