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From: Al Viro <viro@parcelfarce.linux.theplanet.co.uk>
To: Miklos Szeredi <miklos@szeredi.hu>
Cc: ecki-news2004-05@lina.inka.de, linux-kernel@vger.kernel.org
Subject: Re: Problem with ioctl command TCGETS
Date: Sun, 28 Nov 2004 12:18:00 +0000
Message-ID: <20041128121800.GZ26051@parcelfarce.linux.theplanet.co.uk> (raw)
In-Reply-To: <E1CYN7z-0001bZ-00@dorka.pomaz.szeredi.hu>

On Sun, Nov 28, 2004 at 12:22:03PM +0100, Miklos Szeredi wrote:
> > The set-get is supposed to be used for queries, too? The size of value is
> > only used for the get case to describe the buffer length in that case?
> > because otherwise the set-get case may require a short value in and a large
> > answer structure out.
> 
> You misunderstand the motivation.  This is to get/set small compact
> parameters, not huge structures or big data.  Think get/setsockopt().

Think read(2)/write(2).  We already have several barfbags too many,
and that includes both ioctl() and setsockopt().  We are stuck with
them for compatibility reasons, but why the hell would we need yet
another one?

  reply index

Thread overview: 28+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-11-28  0:22 Ozan Eren Bilgen
2004-11-28  0:39 ` Al Viro
2004-11-28  9:59   ` Miklos Szeredi
2004-11-28 10:08     ` Jan Engelhardt
2004-11-28 10:18       ` Miklos Szeredi
2004-11-28 10:28     ` Bernd Eckenfels
2004-11-28 10:56       ` Wichert Akkerman
2004-11-28 11:52         ` Bernd Eckenfels
2004-11-28 11:22       ` Miklos Szeredi
2004-11-28 12:18         ` Al Viro [this message]
2004-11-28 12:32           ` Miklos Szeredi
2004-11-28 12:48             ` Al Viro
2004-11-28 12:52               ` Miklos Szeredi
2004-11-28 13:03                 ` Al Viro
2004-11-28 14:30                   ` Tomas Carnecky
2004-11-28 15:27                     ` Al Viro
2004-11-28 18:23                       ` Tomas Carnecky
2004-11-28 18:51                         ` Miklos Szeredi
2004-12-10  4:01                   ` Ingo Oeser
2004-11-28 13:20                 ` Tomas Carnecky
2004-11-28 14:05                   ` Al Viro
2004-11-28 13:07           ` Tomas Carnecky
2004-11-28 13:11             ` Al Viro
2004-11-28 13:19               ` Tomas Carnecky
2004-11-28 17:42           ` Alan Cox
2004-11-30 13:26           ` Pavel Machek
2004-11-30 15:46             ` Al Viro
2004-11-28 12:23         ` Bernd Eckenfels

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