Date: Sun, 6 Dec 2015 15:09:44 -0500 From: Jake <milios@ccsys.com> To: Anton Sayetsky <vsasjason@gmail.com> Cc: =?utf-8?Q?Lu=C3=ADs_Fernando_Schultz_Xavier_da_Silveira?= <schultz@ime.usp.br>, freebsd-questions@freebsd.org Subject: Re: OSS in jail Message-ID: <4A96B34F-EC69-4036-8D49-73C9B1E662F1@ccsys.com> In-Reply-To: <CAA2O=b_SmMh6iU8-SVjh-qHyvZf9xyxkOLc8KwrynktBvDjsbg@mail.gmail.com> References: <20151206194401.GA3860@hpmini> <CAA2O=b_isQOHepigMgDyDGtOidpbYkLOmvEayCbETfLEbUsDKA@mail.gmail.com> <20151206194958.GB4044@hpmini> <CAA2O=b_SmMh6iU8-SVjh-qHyvZf9xyxkOLc8KwrynktBvDjsbg@mail.gmail.com>
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> On Dec 6, 2015, at 2:51 PM, Anton Sayetsky <vsasjason@gmail.com> wrote: > > 2015-12-06 21:49 GMT+02:00 Luís Fernando Schultz Xavier da Silveira > <schultz@ime.usp.br>: >> Sorry, I meant write-only mode. > If a user has write access, how do you want to prevent him to set permissions? I think that's what he's asking us, the general community. Maybe not for a solution as simple as the standard device nodes and permissions, since he also described his use case as the actual goal. Without actually forming a specific plan for u in detail, a setup involving network send/receive and on a solution such as what Jack2 (and others) provide comes to mind. That may work for you Fernando or it may not be low-level enough to fit all your desires. Perhaps a simpler solution using the append-only file flag would suffice and disallowing the jail to change flags is workable. See allow.chflags in man 8 jail and/or man 5 jail.conf. I believe there's a global setting and a per jail setting. I'm interested in hearing about what solutions you/we can come up with.
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