File system

File system

1. File table - File open count - Disk location - access rights

2. Open file locking

3. Directories

   • Single level
   • Two level
   • Tree structured
   • Acyclic-graph
   • General graph
   • Linear List Hash table
   • Allocation
     • Contiguos Linked Indexed Mapping

4. Partitions

   • RAW
   • Formatted

5. Resides on secondary storage

6. Provides user interface to storage, mapping logical to physical

7. Layered

   • App programs Logical file system File organization module Basic file system I/O control devices

8. Virtual file system

   • OO way of implementation