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Date: Fri, 3 Aug 2001 14:07:04 +0200
From: Corinna Vinschen <cygwin AT cygwin DOT com>
To: cygwin AT cygwin DOT com
Subject: Re: BUG - 1.3.n accept fails if NULL sockaddr * argument and other related stuff.
Message-ID: <20010803140704.W23782@cygbert.vinschen.de>
Mail-Followup-To: cygwin AT cygwin DOT com
References: <00a201c11a39$a1b55c40$0cb4a8c0 AT brisbane DOT paradigmgeo DOT com>
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In-Reply-To: <00a201c11a39$a1b55c40$0cb4a8c0@brisbane.paradigmgeo.com>; from miketh@brisbane.paradigmgeo.com on Wed, Aug 01, 2001 at 01:25:29PM +1000

On Wed, Aug 01, 2001 at 01:25:29PM +1000, Mike Thomas wrote:
>     return accept (sockfd, (struct sockaddr *) NULL, NULL);

Should work now in the next developers snapshot.

> 1. socket.h does not include a type "socklen_t" which is apparently defined
> on some Unix platforms.

Defined as `int' in cygwin/socket.h now.

> 2. Although not relevant to the code above, I noticed while looking in
> socket.h and friends that Cygwin provides sockaddr and sockaddr_un, which
> differ in terms of how much space is made for the name of the socket.  The
> sockaddr member sa_data is only very short (14 bytes, compared to
> UNIX_PATH_LEN for the sun_path member of sockaddr_un) which would not
> suffice for a long file name.  Unfortunately accept is defined in terms of
> sockaddr rather than sockaddr_un which could potentially cause string
> overwrites.

Should be no problem. Winsock accept doesn't know about AF_UNIX sockets.
They are faked using AF_INET sockets in Cygwin.

Hope, that helps,
Corinna

-- 
Corinna Vinschen                  Please, send mails regarding Cygwin to
Cygwin Developer                                mailto:cygwin AT cygwin DOT com
Red Hat, Inc.

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