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mx.zohomail.eu; dkim=pass header.i=rdklein.fr; spf=pass smtp.mailfrom=edou@rdklein.fr; dmarc=pass header.from= Received: from venerable (145.86.95.79.rev.sfr.net [79.95.86.145]) by mx.zoho.eu with SMTPS id 1698422807787544.922021650744; Fri, 27 Oct 2023 18:06:47 +0200 (CEST) User-agent: mu4e 1.8.9; emacs 28.2 From: Edouard Klein To: 9fans <9fans@9fans.net> Date: Fri, 27 Oct 2023 18:00:38 +0200 Message-ID: <87jzr8rqwh.fsf@rdklein.fr> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-ZohoMailClient: External Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: dae762f2-74e2-11ee-8900-b7e7078c7b06 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UYjVkMDM5ZjY3NWM1NDA0Ni1NMjQyM2UwMTc3ZWFjNGI1NDU1YThl?= =?UTF-8?B?ZDI4Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Subject: [9fans] Mounting a 9P filesystem under a Linux "user namespace" Content-Transfer-Encoding: quoted-printable List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M2423e0177eac4b5455a8ed28:1:khwrRFohb844IHI_O8Scigpqd97Ehb3eL6JTTrAP8Rg Dear 9fans, I'm trying to mount a 9p filesystem under a Linux user "namespace". Apparently this is verboten, because mounting filesystems is dangerous. So only fuse is permitted inside a user namespace. I've tried - using a setuid binary: does not work inside the user namespace, - 9pfuse and 9pfs: don't speak 9P2000.L, the only linux 9P2000 server I know of is inferno's export, - lklfuse: does not seem to be able to mount 9p, despite the code being there. I'm about to write my own 9P2000.L fuse wrapper, but before I dive into that, I thought I'd ask here: has anybody ever mounted a 9P filesystem from inside a Linux user namespace, or even better, a full blown container ? Thanks in advance, Cheers, Edouard. ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/Tb5d039f675c54046-M2423e= 0177eac4b5455a8ed28 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription