From: Pavel Emelyanov <xemul-GEFAQzZX7r8dnm+yROfE0A@public•gmane.org>
To: "Eric W. Biederman"
<ebiederm-aS9lmoZGLiVWk0Htik3J/w@public•gmane.org>,
David Miller <davem-fT/PcQaiUtIeIZ0/mPfg9Q@public•gmane.org>
Cc: Linux Containers
<containers-qjLDD68F18O7TbgM5vRIOg@public•gmane.org>,
Serge Hallyn <serue-r/Jw6+rmf7HQT0dZR+AlfA@public•gmane.org>,
netdev-u79uwXL29TY76Z2rM5mHXA@public•gmane.org
Subject: Re: [PATCH 2/8] user_ns: Introduce user_nsmap_uid and user_ns_map_gid.
Date: Tue, 15 Jun 2010 12:02:17 +0400 [thread overview]
Message-ID: <4C173389.1010000@openvz.org> (raw)
In-Reply-To: <m17hm3hxjw.fsf_-_-+imSwln9KH6u2/kzUuoCbdi2O/JbrIOy@public.gmane.org>
On 06/13/2010 05:28 PM, Eric W. Biederman wrote:
>
> Define what happens when a we view a uid from one user_namespace
> in another user_namepece.
>
> - If the user namespaces are the same no mapping is necessary.
>
> - For most cases of difference use overflowuid and overflowgid,
> the uid and gid currently used for 16bit apis when we have a 32bit uid
> that does fit in 16bits. Effectively the situation is the same,
> we want to return a uid or gid that is not assigned to any user.
>
> - For the case when we happen to be mapping the uid or gid of the
> creator of the target user namespace use uid 0 and gid as confusing
> that user with root is not a problem.
>
> Signed-off-by: Eric W. Biederman <ebiederm-aS9lmoZGLiVWk0Htik3J/w@public•gmane.org>
I suppose this one should go via Andrew, not Dave.
Anyway, Acked-by: Pavel Emelyanov <xemul-GEFAQzZX7r8dnm+yROfE0A@public•gmane.org>
next prev parent reply other threads:[~2010-06-15 8:02 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-06-13 13:25 [PATCH 0/8] Support unix domain sockets across namespaces Eric W. Biederman
2010-06-13 13:27 ` [PATCH 1/8] scm: Reorder scm_cookie Eric W. Biederman
2010-06-13 13:28 ` [PATCH 2/8] user_ns: Introduce user_nsmap_uid and user_ns_map_gid Eric W. Biederman
[not found] ` <m17hm3hxjw.fsf_-_-+imSwln9KH6u2/kzUuoCbdi2O/JbrIOy@public.gmane.org>
2010-06-15 8:02 ` Pavel Emelyanov [this message]
2010-06-15 22:37 ` Eric W. Biederman
2010-06-15 20:58 ` Serge E. Hallyn
2010-06-15 8:00 ` [PATCH 1/8] scm: Reorder scm_cookie Pavel Emelyanov
2010-06-13 13:28 ` [PATCH 3/8] sock: Introduce cred_to_ucred Eric W. Biederman
2010-06-15 8:03 ` Pavel Emelyanov
2010-06-13 13:30 ` [PATCH 4/8] af_unix: Allow SO_PEERCRED to work across namespaces Eric W. Biederman
2010-06-14 13:37 ` Daniel Lezcano
2010-06-15 8:04 ` Pavel Emelyanov
2010-06-13 13:31 ` [PATCH 5/8] af_netlink: Add needed scm_destroy after scm_send Eric W. Biederman
2010-06-14 13:37 ` Daniel Lezcano
2010-06-15 8:06 ` Pavel Emelyanov
2010-06-13 13:32 ` [PATCH 6/8] scm: Capture the full credentials of the scm sender Eric W. Biederman
2010-06-15 8:08 ` Pavel Emelyanov
2010-06-15 9:53 ` Eric W. Biederman
2010-06-15 21:45 ` Serge E. Hallyn
2010-06-15 22:08 ` Eric W. Biederman
2010-06-16 4:47 ` Serge E. Hallyn
2010-06-13 13:34 ` [PATCH 7/8] af_unix: Allow credentials to work across user and pid namespaces Eric W. Biederman
[not found] ` <m17hm3giom.fsf-+imSwln9KH6u2/kzUuoCbdi2O/JbrIOy@public.gmane.org>
2010-06-15 8:11 ` Pavel Emelyanov
2010-06-13 13:35 ` [PATCH 8/8] af_unix: Allow connecting to sockets in other network namespaces Eric W. Biederman
2010-06-14 13:37 ` Daniel Lezcano
[not found] ` <m11vcbgimj.fsf-+imSwln9KH6u2/kzUuoCbdi2O/JbrIOy@public.gmane.org>
2010-06-15 8:12 ` Pavel Emelyanov
2010-06-16 22:15 ` [PATCH 0/8] Support unix domain sockets across namespaces David Miller
2010-06-16 23:17 ` David Miller
2010-06-16 23:32 ` Eric W. Biederman
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