The idmap_hash plugin implements a hashing algorithm used to map SIDs for domain users and groups to 31-bit uids and gids, respectively. This plugin also implements the nss_info API and can be used to support a local name mapping files if enabled via the "winbind normalize names" and "winbind nss info" parameters in smb.conf.
The following example utilizes the idmap_hash plugin for the idmap and nss_info information.
[global] idmap backend = hash idmap uid = 1000-4000000000 idmap gid = 1000-4000000000 winbind nss info = hash winbind normalize names = yes idmap_hash:name_map = /etc/samba/name_map.cfg
The original Samba software and related utilities were created by Andrew Tridgell. Samba is now developed by the Samba Team as an Open Source project similar to the way the Linux kernel is developed.