Oracle Solaris ACL Model

The Oracle Solaris ACL model fully supports the interoperability that NFSv4 offers between UNIX and non-UNIX clients. ZFS ACLs are similar to Windows NT-style ACLs, and provide more fine-grained access control than standard file permissions provide. ACLs are set and displayed with the chmod and ls commands.

The ACL model has two types of Access Control Entries (ACEs) that affect access checking: ALLOW and DENY. Therefore, you cannot infer from any single ACE that defines a set of permissions whether the permissions that are not defined in that ACE are allowed or denied.

For information about ACLs and backup products, see Saving ZFS Data With Other Backup Products in Managing ZFS File Systems in Oracle Solaris 11.4.