Page 90 - slides.dvi
P. 90

1.
                        2.
            •
                 •
                               •
                                    •
                                                                                                               File
                                                  Filing
   Operating
                        Storage
                                    maps
   Systems
                                           Directory
                               handles
   —
            includes
                 provides
                                                  systems
                                    from
   Filing
                        Service
                                                  have
                               access
                                           Service
            means
   Systems
                               &
                                                                                                               Management
                                    names
            to
                                                  two
                 mechanism
                                    to
                                                                                           filing system
                                                                                               user space
                                                               I/O subsystem
                 to
                                                  main
                                    file
                               existence
                                                                                                     text name
                 store
            implement
                                                                                    Service
                                                                                       Directory
                 data
                               control
                                    identifiers.
                                                                                                     user file-id
                 on
                                                  components:
            directory
                 disk
                                                            Disk Handler
            service
                                                                       Storage Service






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