linux-kernel - Re: [PATCH 01/24] user_namespace: introduce fsid mappings infrastructure

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Message-ID: <25217d8b-f3e9-7362-e3d9-d8c37bf39558@infradead.org>
Date:   Tue, 11 Feb 2020 09:26:17 -0800
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Christian Brauner <christian.brauner@...ntu.com>,
        Stéphane Graber <stgraber@...ntu.com>,
        "Eric W. Biederman" <ebiederm@...ssion.com>,
        Aleksa Sarai <cyphar@...har.com>, Jann Horn <jannh@...gle.com>
Cc:     smbarber@...omium.org, Alexander Viro <viro@...iv.linux.org.uk>,
        Alexey Dobriyan <adobriyan@...il.com>,
        Serge Hallyn <serge@...lyn.com>,
        James Morris <jmorris@...ei.org>,
        Kees Cook <keescook@...omium.org>,
        Jonathan Corbet <corbet@....net>, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org,
        containers@...ts.linux-foundation.org,
        linux-security-module@...r.kernel.org, linux-api@...r.kernel.org
Subject: Re: [PATCH 01/24] user_namespace: introduce fsid mappings
 infrastructure

On 2/11/20 8:57 AM, Christian Brauner wrote:
> diff --git a/init/Kconfig b/init/Kconfig
> index a34064a031a5..4da082e4f787 100644
> --- a/init/Kconfig
> +++ b/init/Kconfig
> @@ -1102,6 +1102,17 @@ config USER_NS
>  
>  	  If unsure, say N.
>  
> +config USER_NS_FSID
> +	bool "User namespace fsid mappings"
> +	depends on USER_NS
> +	default n
> +	help
> +	  This allows containers, to alter their filesystem id mappings.

                   no comma   ^^^^

> +	  With this containers with different id mappings can still share
> +	  the same filesystem.
> +
> +	  If unsure, say N.
> +
>  config PID_NS
>  	bool "PID Namespaces"
>  	default y


-- 
~Randy