I'd look into NFS. For configuring on the mac try NFS Manager.app I've got os 10.10.4 nfs share to be seen on a real laptop running Fedora 22. On the mac, you will have to pick a mac user to map all incoming user to a mac user. Be sure your firewall has an opening for NFS. I turned off my firewall. example mount command:
mount 192.168.0.140:/Users/mac/shared /Home/me/shared