netdev - Re: [PATCH] netns: add /proc/*/net/id symlink

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Message-ID: <20110521223054.GA3198@p183>
Date:	Sun, 22 May 2011 01:30:54 +0300
From:	Alexey Dobriyan <adobriyan@...il.com>
To:	"Eric W. Biederman" <ebiederm@...ssion.com>
Cc:	davem@...emloft.net, netdev@...r.kernel.org, equinox@...c24.net
Subject: Re: [PATCH] netns: add /proc/*/net/id symlink

On Sat, May 21, 2011 at 08:39:37AM -0700, Eric W. Biederman wrote:
> Alexey Dobriyan <adobriyan@...il.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.
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