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Date:      Sun, 6 Dec 2015 19:44:56 -0200
From:      =?utf-8?B?THXDrXM=?= Fernando Schultz Xavier da Silveira <schultz@ime.usp.br>
To:        Terje Elde <terje@elde.net>
Cc:        Anton Sayetsky <vsasjason@gmail.com>, freebsd-questions@freebsd.org
Subject:   Re: OSS in jail
Message-ID:  <20151206214455.GA5435@hpmini>
In-Reply-To: <87C55BB9-84B2-43B0-BD7D-2E045753C83C@elde.net>
References:  <20151206194401.GA3860@hpmini> <CAA2O=b_isQOHepigMgDyDGtOidpbYkLOmvEayCbETfLEbUsDKA@mail.gmail.com> <20151206194851.GA4044@hpmini> <CAA2O=b_o=Jfmg=ny6JDvgeznR_HVpBr+BO0anPFDfsUBp_RBKQ@mail.gmail.com> <20151206195709.GA4100@hpmini> <87C55BB9-84B2-43B0-BD7D-2E045753C83C@elde.net>

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This is very promising. I will give it a shot.
Thanks very much.

On Sun, Dec 06, 2015 at 09:19:24PM +0100, Terje Elde wrote:
> 
> > On 06 Dec 2015, at 20:57, Luís Fernando Schultz Xavier da Silveira <schultz@ime.usp.br> wrote:
> > 
> > This is the precise problem.
> > I need either a stronger form of access control than unix permissions
> > or two separate devices for playback and recording.
> > Or maybe a separate OSS stack, in the spirit of VIMAGE.
> > These options seem unrealistic, but the use case does not seem
> > unreasonable, which is why I pose the question.
> 
> Although I haven't tested it for devices, it's likely you can solve this by using MAC, and the "file system firewall"; mac_bsdextended
> 
> Effectively you can define "firewall rules" for the file system, and thus block reads from the dsp.
> 
> Might be a learning curve to get things right though. 
> 
> Terje
> 
> 
> 
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