My (limited) understanding of basic Unix is that any files that are created will be created based on the permissions of the creating user. In particular, the group assigned will be the creating user's ...
I'm running Samba 3.6.8-1 on my x64 Arch Linux installation. I recently decided to have my samba share support NTFS's Alternate Data Streams by using streams_xattr or streams_depot. With streams_xattr ...