System Administration Guide: Naming and Directory Services (FNS and NIS+)

File Namespace

A file namespace (or file system) provides a namespace for naming files. File names are identified by the prefixes fs/or _fs/. For example the name fs/etc/motd identifies the file motd which is stored in the /etc directory.

The file namespace is described in more detail in .Files-Based naming files and file contexts are discussed in File Contexts Administration.