Specifications

Therefore, new les and folders you create are not accessible by users if they are
created in a folder that users don’t have privileges for. When setting up share points,
make sure that items have the correct access privileges for the users you want to
share them with.
Kinds of Permissions
Mac OS X Server supports two kinds of le and folder permissions:
Standard Portable Operating System Interface (POSIX) permissions Â
Access Control Lists (ACLs) Â
Standard POSIX permissions enable you to control access to les and folders based on
three categories of users: Owner, Group, and Others. Although these permissions give
you adequate control over who can access a le or a folder, they lack the exibility and
granularity that many organizations require to deal with elaborate user environments.
This is where ACLs come in handy. An ACL provides an extended set of permissions for
a le or folder and enables you to set multiple users and groups as owners. In addition,
ACLs are compatible with Windows Server 2003 and Windows XP, giving you added
exibility in a multiplatform environment.
Standard Permissions
There are four types of standard POSIX access permissions that you can assign to a
share point, folder, or le: Read & Write, Read Only, Write Only, and None. The following
table shows how these permissions aect user access to shared items (les, folders,
and share points).
Users can Read & Write Read Only Write Only None
Open a shared le Yes Yes No No
Copy a shared le Yes Yes No No
Open a shared
folder or share
point
Yes Yes No No
Copy a shared
folder or share
point
Yes Yes No No
Edit a shared le Yes No No No
Move items to a
shared folder or
share point
Yes No Yes No
Move items from
a shared folder or
share point
Yes No No No
18 Chapter 2 Setting Up File Service Permissions