From: Alejandro Colomar <alx@kernel.org>
To: Richard Weinberger <richard@nod.at>
Cc: "Serge E. Hallyn" <serge@hallyn.com>,
christian <christian@brauner.io>, ipedrosa <ipedrosa@redhat.com>,
gscrivan <gscrivan@redhat.com>,
"Andreas Grünbacher" <andreas.gruenbacher@gmail.com>,
acl-devel <acl-devel@nongnu.org>,
linux-man <linux-man@vger.kernel.org>,
linux-api <linux-api@vger.kernel.org>,
linux-fsdevel <linux-fsdevel@vger.kernel.org>,
ebiederm <ebiederm@xmission.com>
Subject: Re: [PATCH 2/3] user_namespaces.7: Document pitfall with negative permissions and user namespaces
Date: Tue, 29 Aug 2023 23:40:34 +0200 [thread overview]
Message-ID: <941ad196-c6ae-728c-a8d5-2a866c20114a@kernel.org> (raw)
In-Reply-To: <300010998.1870230.1693345150665.JavaMail.zimbra@nod.at>
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On 2023-08-29 23:39, Richard Weinberger wrote:
> ----- Ursprüngliche Mail -----
>> Von: "Alejandro Colomar" <alx@kernel.org>
>> $ unshare ‐S 0 ‐G 0 ‐‐map‐users=100000,0,65536 ‐‐map‐groups=100000,0,65536 id
>> unshare: failed to execute ‐S: No such file or directory
>
> Well, maybe your unshare tool is too old.
> AFAIK it uses newuidmap only in recent versions.
I'm on Debian Sid. That's quite unlikely :p
(Although Debian Sid still runs make-4.3, so it wouldn't be crazy).
>
> You can achieve the very same als using podman in rootless mode.
> e.g.
> podman run -it -v /scratch:/scratch/ bash -c "cat /scratch/games/game.txt"
>
> Thanks,
> //richard
--
<http://www.alejandro-colomar.es/>
GPG key fingerprint: A9348594CE31283A826FBDD8D57633D441E25BB5
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next prev parent reply other threads:[~2023-08-29 21:41 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-08-29 20:58 [PATCH 0/3] Document impact of user namespaces and negative permissions Richard Weinberger
2023-08-29 20:58 ` [PATCH 1/3] man: Document pitfall with negative permissions and user namespaces Richard Weinberger
2023-08-30 8:19 ` Christian Brauner
2023-08-29 20:58 ` [PATCH 2/3] user_namespaces.7: " Richard Weinberger
2023-08-29 21:32 ` Alejandro Colomar
2023-08-29 21:38 ` Alejandro Colomar
2023-08-29 21:40 ` Richard Weinberger
2023-08-29 21:39 ` Richard Weinberger
2023-08-29 21:40 ` Alejandro Colomar [this message]
2023-08-30 9:26 ` Alejandro Colomar
2023-08-30 8:18 ` Christian Brauner
2023-08-29 20:58 ` [PATCH 3/3] man: " Richard Weinberger
2023-08-30 8:19 ` Christian Brauner
2023-08-29 21:26 ` [PATCH 0/3] Document impact of user namespaces and negative permissions Alejandro Colomar
2023-08-29 21:32 ` Richard Weinberger
2023-09-13 14:35 ` Alejandro Colomar
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