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From: "M. Tavasti" <tawz@nic.fi>
To: Ketil Froyn <ketil@froyn.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: Re: Select with device and stdin not working
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Date: 25 Jul 2001 16:35:05 +0300
In-Reply-To: Ketil Froyn's message of "Wed, 25 Jul 2001 15:53:34 +0200 (CEST)"
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Ketil Froyn <ketil@froyn.com> writes:

> > while(1) {
> >         FD_ZERO(&rfds);
> >         FD_SET(fd,&rfds);
> >         FD_SET(fileno(stdin),&rfds);
> >         if( select(fd+1, &rfds, NULL, NULL, NULL  ) > 0) {
(Lines removed)
> > }
> 
> It looks like you are sending the original fd_set to select. Remember that
> it is modified in place. 

But one would at least expect FD_ZERO() to really clean up rfds, and
after it FD_SET() is used again, for every call of select().  And this
code works fine in 2.0 kernels, and also with 2.2 and 2.4 if I'm using
named pipe and stdin. Therefore I have strong belief problem is not
usage of select() but something else.

-- 
M. Tavasti /  tawz@nic.fi  /   +358-40-5078254
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