[Samba] Fruit & uchg

[Andrew Walker]

>
> A script could of course set the flag completely from the client side,
> finding files through AFP that have uchg set and set it on the same file
> through SMB. Probably easier to do it that way anyway but I’m still
> interested what actually gets stored in that attribute.
>
https://gitlab.com/samba-team/devel/samba/-/raw/master/librpc/idl/xattr.idl

This should give an idea about what's stored in the xattr.