44.1.1. Discretionary Access Control (DAC)

44.1.1. Discretionary Access Control (DAC)

Discretionary Access Control (DAC) defines the basic access controls for objects in a filesystem. This is the typical access control provided by file permissions, sharing, etc. Such access is generally at the discretion of the owner of the object (file, directory, device, etc.).

DAC provides a means of restricting access to objects based on the identity of the users or groups (subjects) that try to access those objects. Depending on a subject's access permissions, they may also be able to pass permissions to other subjects.


Note: This documentation is provided {and copyrighted} by Red Hat®, Inc. and is released via the Open Publication License. The copyright holder has added the further requirement that Distribution of substantively modified versions of this document is prohibited without the explicit permission of the copyright holder. The CentOS project redistributes these original works (in their unmodified form) as a reference for CentOS-5 because CentOS-5 is built from publicly available, open source SRPMS. The documentation is unmodified to be compliant with upstream distribution policy. Neither CentOS-5 nor the CentOS Project are in any way affiliated with or sponsored by Red Hat®, Inc.