From mboxrd@z Thu Jan  1 00:00:00 1970
From: Alexey Dobriyan <adobriyan@gmail.com>
Subject: Re: [PATCH] netns: add /proc/*/net/id symlink
Date: Sun, 22 May 2011 01:30:54 +0300
Message-ID: <20110521223054.GA3198@p183>
References: <20110521093936.GA3015@p183>
 <m11uzsxdty.fsf@fess.ebiederm.org>
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Cc: davem@davemloft.net, netdev@vger.kernel.org, equinox@diac24.net
To: "Eric W. Biederman" <ebiederm@xmission.com>
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On Sat, May 21, 2011 at 08:39:37AM -0700, Eric W. Biederman wrote:
> Alexey Dobriyan <adobriyan@gmail.com> writes:
> > * init_net always has id 0
> > * two netns do not have same id
> > * id is unsigned integer
> 
> I don't like this patch because we already have a proc interface
> that already solves this in production kernels today.
> 
> - stat is a single syscall
> - two netns do not have the same id
> - id is an ino_t.

Yeah, stat /proc/*/net/dev works.
If you document this, it means we can't change the way ->low_ino is set.
And we can't do other things inside irregular part of procfs.

But can we add clean interface once in a while.