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From: Frank van der Linden <fllinden@amazon.com>
To: Murphy Zhou <jencce.kernel@gmail.com>
Cc: linux-nfs <linux-nfs@vger.kernel.org>,
	Anna Schumaker <anna.schumaker@netapp.com>,
	Trond Myklebust <trond.myklebust@hammerspace.com>
Subject: Re: [PATCH v3 12/13] NFSv4.2: hook in the user extended attribute handlers
Date: Fri, 21 Aug 2020 16:03:38 +0000	[thread overview]
Message-ID: <20200821160338.GA30541@dev-dsk-fllinden-2c-c1893d73.us-west-2.amazon.com> (raw)
In-Reply-To: <CADJHv_tVZ3KzO_RZ18V=e6QBYEFnX5SbyVU6yhh6yCqYMmvmRQ@mail.gmail.com>

On Fri, Aug 21, 2020 at 02:50:59PM +0800, Murphy Zhou wrote:
> Hi,
> 
> On Wed, Jun 24, 2020 at 6:51 AM Frank van der Linden
> <fllinden@amazon.com> wrote:
[...]
> >  static const struct inode_operations nfs4_dir_inode_operations = {
> > @@ -10146,10 +10254,21 @@ static const struct xattr_handler nfs4_xattr_nfs4_acl_handler = {
> >         .set    = nfs4_xattr_set_nfs4_acl,
> >  };
> >
> > +#ifdef CONFIG_NFS_V4_2
> > +static const struct xattr_handler nfs4_xattr_nfs4_user_handler = {
> > +       .prefix = XATTR_USER_PREFIX,
> > +       .get    = nfs4_xattr_get_nfs4_user,
> > +       .set    = nfs4_xattr_set_nfs4_user,
> > +};
> > +#endif
> > +
> 
> Any plan to support XATTR_TRUSTED_PREFIX ?
> 
> Thanks.

This is an implementation of RFC 8276, which explicitly restricts itself
to the "user" namespace.

There is currently no portable way to implement the "trusted" namespace
within the boundaries of the NFS specification(s), so it's not
supported.

- Frank

  reply	other threads:[~2020-08-21 16:03 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-23 22:38 [PATCH v3 00/13] client side user xattr (RFC8276) support Frank van der Linden
2020-06-23 22:38 ` [PATCH v3 01/13] nfs,nfsd: NFSv4.2 extended attribute protocol definitions Frank van der Linden
2020-06-23 22:38 ` [PATCH v3 02/13] nfs: add client side only definitions for user xattrs Frank van der Linden
2020-06-23 22:38 ` [PATCH v3 03/13] NFSv4.2: define limits and sizes for user xattr handling Frank van der Linden
2020-06-23 22:38 ` [PATCH v3 04/13] NFSv4.2: query the server for extended attribute support Frank van der Linden
2020-06-23 22:38 ` [PATCH v3 05/13] NFSv4.2: add client side XDR handling for extended attributes Frank van der Linden
2020-06-23 22:38 ` [PATCH v3 06/13] nfs: define nfs_access_get_cached function Frank van der Linden
2020-06-23 22:38 ` [PATCH v3 07/13] NFSv4.2: query the extended attribute access bits Frank van der Linden
2020-06-23 22:38 ` [PATCH v3 08/13] nfs: modify update_changeattr to deal with regular files Frank van der Linden
2020-06-23 22:39 ` [PATCH v3 09/13] nfs: define and use the NFS_INO_INVALID_XATTR flag Frank van der Linden
2020-06-23 22:39 ` [PATCH v3 10/13] nfs: make the buf_to_pages_noslab function available to the nfs code Frank van der Linden
2020-06-23 22:39 ` [PATCH v3 11/13] NFSv4.2: add the extended attribute proc functions Frank van der Linden
2020-06-23 22:39 ` [PATCH v3 12/13] NFSv4.2: hook in the user extended attribute handlers Frank van der Linden
2020-08-21  6:50   ` Murphy Zhou
2020-08-21 16:03     ` Frank van der Linden [this message]
2020-08-21 16:41       ` Trond Myklebust
2020-08-24  0:13         ` Murphy Zhou
2020-08-24 16:16           ` Frank van der Linden
2020-08-25  0:14             ` Murphy Zhou
2020-06-23 22:39 ` [PATCH v3 13/13] NFSv4.2: add client side xattr caching Frank van der Linden
2020-07-14 17:20 ` [PATCH v3 00/13] client side user xattr (RFC8276) support van der Linden, Frank

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