Re: RFC: Solaris style extended attributes for FreeBSD

On Tue, Apr 22, 2025 at 3:34 AM Cedric Blancher
<[email protected]> wrote:
>
> On Sun, 9 Mar 2025 at 00:02, Rick Macklem <[email protected]> wrote:
> >
> > First off, I cross posted because I don't think many read freebsd-arch@.
> > There seems to be a nice market for Solaris style extended attributes.
> > Since ZFS is already wired for them, adding the basics is pretty
> > straightforward. I am not suggesting that they should replace the
> > current FreeBSD extended attributes.
> >
> > For those not familiar with them (I am not very familiar myself;-),
> > a Solaris style extended attribute is in a directory that hangs off
> > the file object and the entries in the directory (the attributes) can
> > be manipulated with open/read/write/lseek just like a regular file.
> > (They can be as large as a regular file, but there is no atomicity
> > guarantees.)
> >
> > At this point I have a couple of rough patches:
> > https://people.freebsd.org/~rmacklem/xattr.patch - the VFS/ZFS part
> > https://people.freebsd.org/~rmacklem/nfs-xattr.patch - the NFSv4 part
>
> Any timeframe when
> https://people.freebsd.org/~rmacklem/nfs-xattr.patch will land in
> FreeBSD?
I was going to wait until zfs-xattr.patch makes it in, since it is useless
without the zfs-xattr.patch changes.

I could do it sooner, if that makes things easier for people?

Btw, I had the semantics for O_NAMEDATTR different from Solaris's
O_XATTR, but that has been changed now.
I also have a "runat" command. It can be found at..
https://people.freebsd.org/~rmacklem/runat.c

rick

>
> Ced
> --
> Cedric Blancher <[email protected]>
> [https://plus.google.com/u/0/+CedricBlancher/]
> Institute Pasteur