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Date:      Sun, 27 Aug 2023 16:59:06 -0700
From:      Cy Schubert <Cy.Schubert@cschubert.com>
To:        freebsd-current@freebsd.org, Felix Palmen <zirias@freebsd.org>, current@freebsd.org
Subject:   Re: Possible issue with linux xattr support?
Message-ID:  <EA27BAE1-C687-47F9-BB6D-B72A85A5CA8D@cschubert.com>
In-Reply-To: <wuwg3egv3rilgfaa5hor47v3yjwzvxlt5krj4la4wvugcnhkg3@vgrtgfr7rc6i>
References:  <wngyoks3jy5wjrbv6tlqhv3g4jyu7z4s2broo7qcpit7iebawc@fbfb5iidxtp2> <3q2k3tje2ig2s6wzy4hzvjmoyejiecminvcvevivumtukxrgki@btnpjbztyfa6> <ZOuNvisMH_GXHHX2@heemeyer.club> <pzu4sxp4wvfpn3mzzo2giw3otvg6z5ewia6rr2tdgpkjurfcfe@aat2k6ywm6jm> <ZOuoH6Llw8PKgMJQ@heemeyer.club> <wuwg3egv3rilgfaa5hor47v3yjwzvxlt5krj4la4wvugcnhkg3@vgrtgfr7rc6i>

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On August 27, 2023 12:55:23 PM PDT, Felix Palmen <zirias@freebsd.org> wrote:
>* Dmitry Chagin <dchagin@freebsd.org> [20230827 22:46]:
>> On Sun, Aug 27, 2023 at 07:59:32PM +0200, Felix Palmen wrote:
>> > * Dmitry Chagin <dchagin@freebsd.org> [20230827 20:54]:
>> > > 1. which fs are you using?
>> > 
>> > ZFS.
>> > 
>> > > 2. jailed?
>> > 
>> > Yes, this is during building ports with poudriere.
>> > 
>> 
>> I think it's a weird prohibition on changing system namespace extattr
>> attributes, look to comments in extattr_check_cred()
>
>Maybe that's when I should finally start trying to understand the stuff
>in src.git ;)
>
>> I can fix this completely disabling exttatr for jailed proc,
>> however, it's gonna be bullshit, though
>
>Would probably be better than nothing. AFAIK, "Linux jails" are used a
>lot, probably with userlands from distributions actually using xattr.
>
>Cheers, Felix
>

If we are to break it to fix a problem, maybe a sysctl to enable/disable then?


-- 
Cheers,
Cy Schubert <Cy.Schubert@cschubert.com>
FreeBSD UNIX:  <cy@FreeBSD.org>  Web:  https://FreeBSD.org
NTP:                     <cy@nwtime.org>    Web:  https://nwtime.org
                                                    e^(i*pi)+1=0

Pardon the typos. Small keyboard in use.


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