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From: ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org (Eric W. Biederman)
To: "Serge E. Hallyn" <serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org>
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Subject: Re: [PATCH] userns,pidns: Verify the userns for new pid namespaces
Date: Sat, 29 Apr 2017 23:33:24 -0500	[thread overview]
Message-ID: <87a86yseej.fsf@xmission.com> (raw)
In-Reply-To: <20170429205325.GB1119-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org> (Serge E. Hallyn's message of "Sat, 29 Apr 2017 15:53:25 -0500")

"Serge E. Hallyn" <serge-A9i7LUbDfNHQT0dZR+AlfA@public.gmane.org> writes:

> Quoting Eric W. Biederman (ebiederm-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org):
>> 
>> It is pointless and confusing to allow a pid namespace hierarchy and
>> the user namespace hierarchy to get out of sync.  The owner of a child
>> pid namespace should be the owner of the parent pid namespace or
>> a descendant of the owner of the parent pid namespace.
>> 
>> Otherwise it is possible to construct scenarios where it is legal to
>> do something in a parent pid namespace but in a child pid namespace.
>
> Hi,
>
> did you mean 'but not in a child...' above?

Actually I believe I meant:

>> Otherwise it is possible to construct scenarios where it is not legal
>> to do something in a parent pid namespace but it is legal a child pid
>> namespace.

I definitely need to fix that wording thank you.

Eric

  parent reply	other threads:[~2017-04-30  4:33 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-04-27 12:32 [PATCH v3] pid_ns: Introduce ioctl to set vector of ns_last_pid's on ns hierarhy Kirill Tkhai
     [not found] ` <149329634856.21195.14196911999722279118.stgit-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2017-04-27 15:15   ` Eric W. Biederman
     [not found]     ` <87mvb16fv7.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-04-27 15:52       ` Kirill Tkhai
     [not found]         ` <12a73543-79ea-4bac-7e96-6ab237534af2-5HdwGun5lf+gSpxsJD1C4w@public.gmane.org>
2017-04-27 16:07           ` Eric W. Biederman
     [not found]             ` <877f254yx0.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-04-28  9:13               ` Kirill Tkhai
     [not found]                 ` <a9941daf-861b-453c-37b8-e95389a9959b-5HdwGun5lf+gSpxsJD1C4w@public.gmane.org>
2017-04-29 19:12                   ` Eric W. Biederman
     [not found]                     ` <8737crt4dz.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-04-29 19:25                       ` [PATCH] userns,pidns: Verify the userns for new pid namespaces Eric W. Biederman
2017-04-29 20:53                         ` Serge E. Hallyn
     [not found]                           ` <20170429205325.GB1119-7LNsyQBKDXoIagZqoN9o3w@public.gmane.org>
2017-04-30  4:33                             ` Eric W. Biederman [this message]
     [not found]                               ` <87a86yseej.fsf-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-04-30  4:42                                 ` Eric W. Biederman
     [not found]                         ` <87vapnrp7f.fsf_-_-aS9lmoZGLiVWk0Htik3J/w@public.gmane.org>
2017-05-02 10:03                           ` Kirill Tkhai
2017-05-02 10:04                             ` Kirill Tkhai
     [not found]                               ` <fab323b8-a909-bbce-77d2-afbcd3b0452e-5HdwGun5lf+gSpxsJD1C4w@public.gmane.org>
2017-05-02 20:39                                 ` Eric W. Biederman
2017-05-02  9:53                     ` [PATCH v3] pid_ns: Introduce ioctl to set vector of ns_last_pid's on ns hierarhy Kirill Tkhai
     [not found]                       ` <d2b88252-d579-8deb-2c32-4118b8464b6b-5HdwGun5lf+gSpxsJD1C4w@public.gmane.org>
2017-05-02 21:26                         ` Eric W. Biederman

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