[14972] in athena10
Re: [Debathena] #626: aufs doesn't support file capabilities
daemon@ATHENA.MIT.EDU (Debathena Trac)
Wed May 24 20:43:59 2017
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From: "Debathena Trac" <debathena@mit.edu>
Cc: debathena@mit.edu
To: geofft@mit.edu
Date: Thu, 25 May 2017 00:43:44 -0000
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#626: aufs doesn't support file capabilities
------------------------------+------------------------------------
Reporter: geofft | Owner:
Type: defect | Status: new
Priority: insignificant | Milestone: Upstream Utopia
Component: login chroot | Resolution:
Keywords: | Fixed in version:
Upstream bug: |
------------------------------+------------------------------------
Comment (by geofft):
So AUFS finally implemented support for xattrs and therefore for file
capabilities in March 2015:
https://github.com/sfjro/aufs4-standalone/commit/6660bf6 , behind the
CONFIG_AUFS_XATTR config option, which is off by default. (This support
should be in the versions of AUFS for kernel 4.0 and up, if I'm reading
this right.)
The CONFIG_AUFS_XATTR option was enabled in Ubuntu 15.10 with kernel
4.2.0-38.45, Ubuntu 16.04 with kernel 4.4.0-22.39, and Ubuntu 16.10 with
kernel 4.8.0-30.32. It looks like it's not supported at all in older
versions of Ubuntu, certainly not in 14.04. See https://pad.lv/1557776
The CONFIG_AUFS_XATTR option is not currently enabled in Debian. The
kernel in Debian 8 "Jessie" (current stable), 3.16, is too old anyway. In
Debian 9 "Stretch" (current testing), AUFS is in a separate package called
aufs-dkms, but the option is disabled. I've filed
https://bugs.debian.org/863166 requesting that it be enabled, although
it's likely too late for the Stretch release.
Debathena only uses AUFS on Ubuntu, right? Then this ticket can probably
be closed.
--
Ticket URL: <https://athena10.mit.edu/trac/ticket/626#comment:2>
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