All of lore.kernel.org
 help / color / mirror / Atom feed
From: ebiederm@xmission.com (Eric W. Biederman)
To: Pavel Emelyanov <xemul@openvz.org>
Cc: David Miller <davem@davemloft.net>,
	Serge Hallyn <serue@us.ibm.com>,
	Linux Containers <containers@lists.osdl.org>,
	Daniel Lezcano <daniel.lezcano@free.fr>,
	netdev@vger.kernel.org
Subject: Re: [PATCH 2/8] user_ns: Introduce user_nsmap_uid and user_ns_map_gid.
Date: Tue, 15 Jun 2010 15:37:51 -0700	[thread overview]
Message-ID: <m1typ3udkw.fsf@fess.ebiederm.org> (raw)
In-Reply-To: <4C173389.1010000@openvz.org> (Pavel Emelyanov's message of "Tue\, 15 Jun 2010 12\:02\:17 +0400")

Pavel Emelyanov <xemul@openvz.org> writes:

> 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@xmission.com>
>
> I suppose this one should go via Andrew, not Dave.

If it was stand alone I would send it that way.

In this case I'm hope Dave will indulge me because this bit is
simple, the only user for now is the network stack, and the people
maintaining the code have already acked the patch.

Eric

  reply	other threads:[~2010-06-15 22:37 UTC|newest]

Thread overview: 38+ 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 13:25 ` Eric W. Biederman
2010-06-13 13:27 ` [PATCH 1/8] scm: Reorder scm_cookie Eric W. Biederman
2010-06-13 13:27   ` 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
2010-06-13 13:28     ` Eric W. Biederman
     [not found]     ` <m17hm3hxjw.fsf_-_-+imSwln9KH6u2/kzUuoCbdi2O/JbrIOy@public.gmane.org>
2010-06-15  8:02       ` Pavel Emelyanov
2010-06-15 22:37         ` Eric W. Biederman [this message]
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
2010-06-13 13:28   ` 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
2010-06-13 13:30   ` 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
2010-06-13 13:31   ` 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
2010-06-13 13:32   ` 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
2010-06-13 13:34   ` 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
2010-06-13 13:35   ` 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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=m1typ3udkw.fsf@fess.ebiederm.org \
    --to=ebiederm@xmission.com \
    --cc=containers@lists.osdl.org \
    --cc=daniel.lezcano@free.fr \
    --cc=davem@davemloft.net \
    --cc=netdev@vger.kernel.org \
    --cc=serue@us.ibm.com \
    --cc=xemul@openvz.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.