linux-ext4 - Re: [PATCH 23/25] libext2fs: support modifying arbitrary extended attributes

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Message-ID: <20131130202436.GB9541@birch.djwong.org>
Date:	Sat, 30 Nov 2013 12:24:36 -0800
From:	"Darrick J. Wong" <darrick.wong@...cle.com>
To:	Jan Kara <jack@...e.cz>
Cc:	Zheng Liu <gnehzuil.liu@...il.com>, tytso@....edu,
	linux-ext4@...r.kernel.org
Subject: Re: [PATCH 23/25] libext2fs: support modifying arbitrary extended
 attributes

On Fri, Nov 29, 2013 at 09:17:07AM +0100, Jan Kara wrote:
> On Fri 29-11-13 13:30:13, Zheng Liu wrote:
> > On Tue, Nov 26, 2013 at 05:56:17PM -0800, Darrick J. Wong wrote:
> > [...]
> > > > > +static struct ea_name_index ea_names[] = {
> > > > > +	{1, "user."},
> > > > > +	{2, "system.posix_acl_access"},
> > > > > +	{3, "system.posix_acl_default"},
> > > > > +	{4, "trusted."},
> > > > > +	{6, "security."},
> > > > > +	{7, "system."},
> > > > 
> > > > It seems that we also have a _RICHACL name here.
> > > 
> > > Yes.  Do you know what it's used for?  EXT4_XATTR_INDEX_RICHACL isn't used as
> > > of 3.13-rc1.
> > 
> > Sorry, I just look at this mail.  If I remember correctly, this flag is
> > added by Jan Kara because he want to reserve this flag for rich acl
> > which has been implemented out of upstream kernel tree.
>   Yes, SUSE kernels use EXT4_XATTR_INDEX_RICHACL to store Samba acls.

Just to confirm, the prefix is 'system.richacl'?

Also, does anyone know if the value 5 maps to anything?

/me adds the attribute name index map to the wiki page.

--D
> 
> 								Honza
> -- 
> Jan Kara <jack@...e.cz>
> SUSE Labs, CR
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