On Tue, Apr 29, 2025 at 3:45 PM Chuck Lever <chuck.lever@xxxxxxxxxx> wrote: > > On 4/29/25 9:10 AM, Sebastian Feld wrote: > > On Mon, Apr 28, 2025 at 4:15 PM Chuck Lever <chuck.lever@xxxxxxxxxx> wrote: > >> > >> Hi Sebastian - > >> > >> On 4/28/25 7:06 AM, Sebastian Feld wrote: > >>> I've been debating with Opentext support about their Windows NFS4.0 > >>> client about a problem that the Windows attributes HIDDEN and SYSTEM > >>> work with a Solaris NFSD, but not with a Linux NFSD. > >>> > >>> Their support said it's a known bug in LInux NFSD that "fattr4_hidden > >>> and fattr4_system, specified in RFC 3530, are broken in Linux NFSD". > >> > >> RFC 7530 updates and replaces RFC 3530. > >> > >> Section 5.7 lists "hidden" and "system" as RECOMMENDED attributes, > >> meaning that NFSv4 servers are not required to implement them. > >> > >> So that tells me that both the Solaris NFS server and the Linux NFS > >> server are spec compliant in this regard. This is NOTABUG, but rather it > >> is a server implementation choice that is permitted by RFC. > >> > >> It is more correct to say that the Linux NFS server does not currently > >> implement either of these attributes. The reason is that native Linux > >> file systems do not support these attributes, and I believe that neither > >> does the Linux VFS. So there is nowhere to store these, and no way to > >> access them in filesystems (such as the Linux port of NTFS) that do > >> implement them. > >> > >> We want to have a facility that can be used by native applications > >> (such as Wine), Samba, and NFSD. So implementing side-car storage > >> for such attributes that only NFSD can see and use is not really > >> desirable. > > > > I did a bit of digging, that debate started in 2002. > > > > 23 years later, nothing happened. No Solution. > > Very depressing. > > It's a hard problem. > > Focus on the recent work. It appears to be promising and there have > been few objections to it. Do you have any reference to that work? Are there status updates? Sebi -- Sebastian Feld - IT security consultant
