From: ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org (Eric W. Biederman)
To: "Serge E. Hallyn" <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
Cc: Linux Containers
<containers-qjLDD68F18O7TbgM5vRIOg@public.gmane.org>,
"Eric W. Biederman"
<ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH 4/6] user namespaces: add user_ns to super block
Date: Fri, 01 Aug 2008 18:49:34 -0700 [thread overview]
Message-ID: <m1wsj0i3td.fsf@frodo.ebiederm.org> (raw)
In-Reply-To: <20080802000609.GA10211-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org> (Serge E. Hallyn's message of "Fri, 1 Aug 2008 19:06:09 -0500")
"Serge E. Hallyn" <serue-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org> writes:
> Ok I wasn't thinking right. We still can't get to a user_ns from
> an inode *.
>
> So playing with this a bit tonight, it seems like the best way
> to pass the user_namespace up to the fs is just to define new
> super_operations which handle the conversions. Something like
> the following.
I'm pretty certain you want to pass in the entire inode instead
of just inode->i_uid. That would allow you to pass one less argument
and give the filesystems more information to work with.
Eric
next prev parent reply other threads:[~2008-08-02 1:49 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-26 0:27 [PATCH 0/6] user namespaces: introduction Serge E. Hallyn
[not found] ` <20080726002700.GA29686-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-26 0:27 ` [PATCH 1/6] user namespaces: introduce user_struct->user_namespace relationship Serge E. Hallyn
[not found] ` <20080726002725.GA29874-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-26 2:07 ` [Devel] " Alexey Dobriyan
[not found] ` <20080726020731.GA5115-QDJVlCTZ4KWTKS93B3g+7KFoa47nwP16@public.gmane.org>
2008-07-26 3:31 ` Serge E. Hallyn
2008-07-26 0:27 ` [PATCH 2/6] user namespaces: move user_ns from nsproxy into user struct Serge E. Hallyn
[not found] ` <20080726002735.GB29874-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-28 21:41 ` Eric W. Biederman
[not found] ` <m1k5f5it4i.fsf-B27657KtZYmhTnVgQlOflh2eb7JE58TQ@public.gmane.org>
2008-07-29 17:59 ` Serge E. Hallyn
2008-07-26 0:27 ` [PATCH 3/6] user namespaces: rig generic_permission for simple userns check Serge E. Hallyn
2008-07-26 0:27 ` [PATCH 4/6] user namespaces: add user_ns to super block Serge E. Hallyn
[not found] ` <20080726002754.GD29874-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-28 21:53 ` Eric W. Biederman
[not found] ` <m13altislf.fsf-B27657KtZYmhTnVgQlOflh2eb7JE58TQ@public.gmane.org>
2008-07-28 22:47 ` Matt Helsley
[not found] ` <1217285230.25300.19.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2008-07-28 23:03 ` Eric W. Biederman
[not found] ` <m1skttehm6.fsf-B27657KtZYmhTnVgQlOflh2eb7JE58TQ@public.gmane.org>
2008-07-29 18:09 ` Serge E. Hallyn
2008-07-29 18:05 ` Serge E. Hallyn
[not found] ` <20080729180515.GB365-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-07-29 19:22 ` Eric W. Biederman
[not found] ` <m13alscx7e.fsf-B27657KtZYmhTnVgQlOflh2eb7JE58TQ@public.gmane.org>
2008-08-02 0:06 ` Serge E. Hallyn
[not found] ` <20080802000609.GA10211-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>
2008-08-02 1:49 ` Eric W. Biederman [this message]
[not found] ` <m1wsj0i3td.fsf-B27657KtZYmhTnVgQlOflh2eb7JE58TQ@public.gmane.org>
2008-08-03 0:37 ` Serge E. Hallyn
2008-07-26 0:28 ` [PATCH 5/6] user namespaces: refuse create in other user_ns Serge E. Hallyn
2008-07-26 0:28 ` [PATCH 6/6] user_namespace: move put_user_ns outside lock Serge E. Hallyn
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