From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 17 Dec 2004 07:30:54 -0500 From: Latchesar Ionkov To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu> Subject: Re: [9fans] Acme mailreader - now: User mode filesystems in linux Message-ID: <20041217123054.GA12947@ionkov.net> References: <20041217152456.3f377069.martin_ml@parvat.com> <6141d2bd887f96584eaafdd2bdd5c1d0@collyer.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <6141d2bd887f96584eaafdd2bdd5c1d0@collyer.net> User-Agent: Mutt/1.4.1i Topicbox-Message-UUID: 19e4ba20-eace-11e9-9e20-41e7f4b1d025 If you combine the restriction for mounting filesystems only on directories you have write access to, with the (enforced) creation of private namespace that Linux allows, mounting on /tmp is not a problem anymore. Lucho On Fri, Dec 17, 2004 at 02:22:22AM -0800, geoff@collyer.net said: > Someone at the 9bof claimed that at least one of the BSDs already > permits users to mount things on any directory for which they have > write permission. I suspect that the policy actually needs to be a > little stricter than that; you don't want people mounting > (system-wide) on /tmp. Perhaps any directory that you own would make > more sense. But we also heard that the maintainers of at least one of > the other BSDs or Linux have a religious aversion to users mounting > anything. Certainly one would want to think through the interactions > of set-id and user mounts.