Re: io_select support for netfs

[Thomas Bushnell, BSG]

Marco Gerards <metgerards@student.han.nl> writes:

> In libnetfs/mutations.h the macro IO_SELECT_REPLY_PORT is not
> defined.  That means that the netfs_S_io_select function does not get
> the reply port.
> 
> If someone wants to override netfs_S_io_select, the function simply
> won't work correctly because the reply port is required.  The patch
> for the console client I sent in yesterday overrides netfs_S_io_select
> so this change is required in order to make it work correctly.

Be very careful in general with select on network thingies.  This
doesn't apply to your use, but I want it on the record.  To return
select true means that you can immediately do I/O with no waiting.

That means that you certainly already have the data to read here on
the local computer, you cannot reliably expect to read something over
a network, ever.

Thomas