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Re: Re: ps and psql from PostgreSQL not working with cygwin-1.1.5-2

From: Jason Tishler <Jason(dot)Tishler(at)dothill(dot)com>
To: cygwin <cygwin(at)sources(dot)redhat(dot)com>, pgsql-ports(at)postgresql(dot)org
Subject: Re: Re: ps and psql from PostgreSQL not working with cygwin-1.1.5-2
Date: 2000-11-08 21:54:51
Message-ID: 20001108165451.B324@dothill.com (view raw or flat)
Thread:
Lists: pgsql-ports
On Tue, Nov 07, 2000 at 08:48:35AM +0000, Pete Forman wrote:
> Jason Tishler writes:
>  > Sorry for not letting this thread die...

I will let it die now...

>  > On Sat, Nov 04, 2000 at 01:19:50AM +0100, Corinna Vinschen wrote:
>  > > That's the problem. I thought about changing the behaviour of
>  > > connect two weeks ago. I'm not sure if it makes sense to change
>  > > the error code translation table for exactly that reason: Who
>  > > knows what that would break? Perhaps it's better to change only
>  > > the connect call to return EINPROGRESS. On the other hand Winsock
>  > > seem to have interchanged the meaning of WOULDBLOCK and
>  > > INPROGRESS (by mistake?). Hmmm.
>  > 
>  > Can some one very knowledgeable with socket programming (hopefully
>  > on many platforms) please help us out?  Should socket clients
>  > (e.g., psql) be expected to test errno for EWOULDBLOCK (a.k.a
>  > EAGAIN) when connect() returns -1?  Or, should cygwin map
>  > EWOULDBLOCK to EINPROGRESS, at least for connect()?
> 
> According to POSIX, connect() should never set errno to EAGAIN or
> EWOULDBLOCK.  (Those codes are appropriate for accept().)
> 
>   If the connection cannot be established immediately and O_NONBLOCK
>   is set for the file descriptor for the socket, connect( ) shall fail
>   and set errno to [EINPROGRESS], but the connection request shall not
>   be aborted, and the connection shall be established asynchronously.

I'm very happy to report that Cygwin 1.1.5 has changed to implement the
above.

Thanks to all involved for their help.

Jason

-- 
Jason Tishler
Director, Software Engineering       Phone: +1 (732) 264-8770 x235
Dot Hill Systems Corporation         Fax:   +1 (732) 264-8798
82 Bethany Road, Suite 7             Email: Jason(dot)Tishler(at)dothill(dot)com
Hazlet, NJ 07730 USA                 WWW:   http://www.dothill.com

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