netdev - Re: [PATCH 1/8] networking/fanotify: declare fanotify socket numbers

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Message-ID: <20090911204602.GA19371@shareable.org>
Date:	Fri, 11 Sep 2009 21:46:02 +0100
From:	Jamie Lokier <jamie@...reable.org>
To:	Eric Paris <eparis@...hat.com>
Cc:	David Miller <davem@...emloft.net>, linux-kernel@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, netdev@...r.kernel.org,
	viro@...iv.linux.org.uk, alan@...ux.intel.com, hch@...radead.org
Subject: Re: [PATCH 1/8] networking/fanotify: declare fanotify socket numbers

Eric Paris wrote:
> > I would really prefer if you worked on eliminating the problem that
> > prevents you from using netlink instead.
> 
> I'm not really sure if I can, although I'd love to hear input from
> someone who knows the netlink code on how I can make it do what I need.
> I'm really not duplicating much other than the NLMSG_OK and NLMSG_NEXT
> macros.  My code doesn't even use skbs and I'm not savy enough to really
> know how I could.  I'm more than willing to work on it if someone can
> point me to how it might work.

Let's turn the question around.

Since you're doing lots of non-sockety things, and can't tolerate
dropped packets - why isn't it a character device?  What's the reason
for using a socket at all?

(I'm reminded of /dev/poll, /dev/epoll and /dev/inotify :-)

-- Jamie
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