[Samba] Operation Not Supported error for GETXATTR when VFS plugin "nfs4acl_xattr" is used
slow at samba.org
Fri Apr 6 19:22:17 UTC 2018
On Fri, Apr 06, 2018 at 10:27:32AM -0700, Jeremy Allison via samba wrote:
> On Fri, Apr 06, 2018 at 01:44:50PM +0530, Akash Jain wrote:
> > Hi All
> > I found there is one bug in the plugin. The name of the attribute for ACL as
> > per strace output of nfs4_setfacl is system.nfs4_acl.
> > The source code has defined it as
> > #define NFS4ACL_XATTR_NAME ( "system.nfs4acl" )
> > Note there is missing underscore.
> > After this, the EOPNOTSUPP error is not observed.
> > Hope this helps
> Hmmm. This has been changed for Samba 4.8.0 and above,
> with commit df99ac27106dededcf0a98a251e58c24b90bf6d1.
> This would seem to be a correct fix, as it seems
> "The "system" xattr namespace is reserved for the kernel. Any attempt to
> use xattrs in that namesspace will fail with EOPNOTSUPP, regardless of
> Can you check with 4.8.x ?
I guess that statement may not be correct, depending on which kernel subsystem
exposes the xattr? My testing was with local filesytems, not with nfsv4
mounts. Apparantly it works with nfs4_getfacl|nfs4_setfacl...
Ralph Boehme, Samba Team https://samba.org/
Samba Developer, SerNet GmbH https://sernet.de/en/samba/
GPG Key Fingerprint: FAE2 C608 8A24 2520 51C5
59E4 AA1E 9B71 2639 9E46
More information about the samba