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Date: Fri, 20 Feb 2004 19:11:46 +0100 (CET)
From: Krzysztof Benedyczak <golbi@mat.uni.torun.pl>
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To: Arnd Bergmann <arnd@arndb.de>
cc: linux-kernel@vger.kernel.org
Subject: Re: [RFC][PATCH] 2/6 POSIX message queues
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On Fri, 20 Feb 2004, Arnd Bergmann wrote:

> Krzysztof Benedyczak wrote:
>
> > +
> > +struct mq_attr {
> > +	long	mq_flags;	/* message queue flags			*/
> > +	long	mq_maxmsg;	/* maximum number of messages		*/
> > +	long	mq_msgsize;	/* maximum message size			*/
> > +	long	mq_curmsgs;	/* number of messages currently queued	*/
> > +};
> > +
>
> Does POSIX mandate that these have to be 'long'? If you can change them
> all to any of 'int', '__s32' or '__s64', the handlers for 32 bit system
> call emulation on 64 bit machines will get a lot simpler because the
> 32 bit user structures are then identical to the 64 bit ones.
>
Yes, POSIX defines it to longs. And quess that compability issues should
be handled in kernel?

Krzysztof Benedyczak