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Subject: Re: Defect report: ENOTSOCK on close
From: Krzysztof =?UTF-8?Q?=C5=BBelechowski?= <program DOT spe AT home DOT pl>
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In-Reply-To: <20080115101528.GE5097@calimero.vinschen.de>
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Date: Thu, 17 Jan 2008 19:29:47 +0100
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Dnia 15-01-2008, Wt o godzinie 11:15 +0100, Corinna Vinschen pisze:
> On Jan 15 09:19, Christopher Yeleigton wrote:
> > Summary:
> > Unexpected error ENOTSOCK upon closing filedes[0] obtained via socketpair
> >
> > Test case:
> >
> > #include <stdio.h>
> > #include <stdlib.h>
> > #include <sys/socket.h>
> >
> > int main(int argc, char *argv[])
> > {
> > auto int a_fd[02];
> > if(socketpair(AF_LOCAL, SOCK_STREAM, 0, a_fd))
> > perror("socketpair");
> > else
> > {
> > auto int an_ix = 0;
> > for(; an_ix < 02; ++an_ix)
> > if(close(a_fd[an_ix]))
> >   { enum BufLen { BUF_LEN = 040 };
> > auto char a_buf[BUF_LEN];
> > perror(snprintf(a_buf, BUF_LEN, "close %d", an_ix) > 0? a_buf:
> > "sprintf"); }}
> > return EXIT_SUCCESS; }
> >
> > Error message:
> > close 0: Socket operation on non-socket
> >
> > (Note it occurs with filedes[0] only, even if close is called for 
> > filedes[1]
> > first).
> >
> > OpenBSD does not exhibit this malfunction.
> 
> I tried your test application multiple times on XP SP2, 2003 Server x64,
> as well as on 2008 Server RC1.  I can not reproduce the above problem.
> On all three machines (all running Cygwin 1.5.25-7), the sockets are
> closed without failure every time.  Maybe that's a bad interaction with
> a third party product?  Did you check the FAQ?

The FAQ does not mention any of the products I have, namely, Panda
Internet Security and nVidia ForceWare.  The problem went away when I
uninstalled Panda and I hope it will not return even though I am going
to reinstall it, albeit without the firewall component.  (Having two
firewalls is a bad thing, of course; I thought the installer would be
smart enough not to install its firewall on top of the other.).

> 
>   http://cygwin.com/faq/faq.using.html#faq.using.bloda
> 
> 
> Corinna
> 

Thanks,
Chris


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