Date: Mon, 4 Aug 1997 09:12:03 +0930 (CST) From: Michael Smith <msmith@atrad.adelaide.edu.au> To: henrich@crh.cl.msu.edu (Charles Henrich) Cc: msmith@atrad.adelaide.edu.au, tom@sdf.com, freebsd-hackers@FreeBSD.ORG Subject: Re: tty-level buffer overflows Message-ID: <199708032342.JAA15646@genesis.atrad.adelaide.edu.au> In-Reply-To: <19970803112147.21483@crh.cl.msu.edu> from Charles Henrich at "Aug 3, 97 11:21:47 am"
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Charles Henrich stands accused of saying:
>
> > > Not in this case, its a 16550A, on a 486/66 doing absolutely nothing
> > > except trying to do filetransfer over the serial port with a custom app I
> > > wrote..
> >
> > And of course if you bothered to read the sio(4) manpage it would tell you
> > what the error message means. Or if you'd mentioned that you're using a
>
> Ooh, arent we high and mighty. I did read the man page, one line that says
> "The application is broken" is about as useless as it gets. As my original
Actually, the manpage says :
sio%d: tty-level buffer overflow. Problem in the application. Input has
arrived faster than the given module could process it and some has been
lost.
I don't know how your problem could be more succinctly described.
> > Your application is busted; data is arriving faster than your app is reading
> > it, and the kernel has run out of patience and started throwing the data
> > away.
>
> Im afraid not, the application is a software Upload, with a singly byte ack
> every 2k, if the serial port cant handle that, theres a problem. I would
> presume that if the buffer is full, a write() should block.
... you haven't read the manpage then. It is the receiving side of
your application that is at fault, not the transmitting side.
--
]] Mike Smith, Software Engineer msmith@gsoft.com.au [[
]] Genesis Software genesis@gsoft.com.au [[
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