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To: cygwin AT cygwin DOT com
Subject: Re: struct msghdr in socket.h is wrong
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Reply-To: sds AT gnu DOT org
X-Attribution: Sam
X-Disclaimer: You should not expect anyone to agree with me.
From: Sam Steingold <sds AT gnu DOT org>
In-Reply-To: <20051012204234.GA9218@calimero.vinschen.de> (Corinna Vinschen's message of "Wed, 12 Oct 2005 22:42:34 +0200")
References: <ur7aqwno0 DOT fsf AT gnu DOT org> 	<20051012204234 DOT GA9218 AT calimero DOT vinschen DOT de>
Mail-Followup-To: cygwin AT cygwin DOT com
Date: Sat, 15 Oct 2005 22:23:20 -0400
Message-ID: <u64rydwtj.fsf@gnu.org>
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> * Corinna Vinschen <pbevaan-pltjva AT pltjva DOT pbz> [2005-10-12 22:42:34 +0200]:
>
> On Oct 12 15:17, Sam Steingold wrote:
>> cyswin/socket.h:
>> 
>> struct msghdr
>> {
>> 	void	*	msg_name;	/* Socket name			*/
>> 	int		msg_namelen;	/* Length of name		*/
>> 	struct iovec *	msg_iov;	/* Data blocks			*/
>> 	int		msg_iovlen;	/* Number of blocks		*/
>> 	void	*	msg_accrights;	/* Per protocol magic (eg BSD file descriptor passing) */
>> 	int		msg_accrightslen;	/* Length of rights list */
>> };
>
> This is the so called "older" implementation of struct msghdr as
> defined up to 4.2BSD.  Since it's quite useless so far and since

I am not sure I quite understand what you mean by useless.
is cygwin implementation somehow deficient?

> applications using this structure should accomodate the old
> implementation anyway, I don't see a good reason to change this right
> now.

the only reason applications have to accommodate the old implementation
is that some unixes still stick with it.
if you switch to the posix msghdr, I, for one, would not have to
accomodate the old implementation.

-- 
Sam Steingold (http://www.podval.org/~sds) running w2k
<http://www.mideasttruth.com/> <http://www.iris.org.il>
<http://www.jihadwatch.org/> <http://www.memri.org/> <http://ffii.org/>
Two wrongs don't make a right, but three rights make a left.

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