Date: Wed, 5 Apr 2017 14:38:59 -0400 From: "James B. Byrne" <byrnejb@harte-lyne.ca> To: "Ernie Luzar" <luzar722@gmail.com> Cc: freebsd-questions@freebsd.org Subject: Re: X11 and ezjails Message-ID: <f3053c25fd03679968f84cbe47b5b583.squirrel@webmail.harte-lyne.ca> In-Reply-To: <58E50AC2.7010909@gmail.com> References: <7f49f81e25d0eb05aad1af66df49c525.squirrel@webmail.harte-lyne.ca> <20170331204517.f30e0f3b.freebsd@edvax.de> <af012e38f42d0eac2190c87c0a523276.squirrel@webmail.harte-lyne.ca> <58E50AC2.7010909@gmail.com>
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On Wed, April 5, 2017 11:18, Ernie Luzar wrote:
>>
>>
> This is the problem
> E233: cannot open display
>
> gvim will not work if run in a jail. gvim uses x11 and x11 needs
> kernel access to talk to the x11 display. Jails are designed on
> purpose to deny kernel access to secure the host system from
> attack. This is why you can never get a desktop to run in a jail.
> The other authentication error messages are bogus and can be
> ignored as misleading.
>
> This is also why gvin works when run on the host system.
>
> The bottom line here is that what your trying to run in a jail will
> NEVER work. Ezjail has no baring on this problem, its a design feature
> of jsil(8).
>
Thank you very much. That saves me from much futile effort.
Since all of the files used by a jail lie under /usr/jails/<name>/ I
can just edit the appropriate files directly from the host instead.
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