File Systems

File Systems

1. File System Interface

   • Access methods
     • Sequential Acces
     • Direct Acces
     • Other Acces Methods
   • Directory Structure
     • Kinds
       • None - sequence of words, bytes
       • Simple record structure
       • Complex Structures
   • Protection
     • Permissions
       • read
       • write
       • execute
       • append
       • delete
       • list

2. File System Implementation

   • Allocation and Free Space Management
     • File System Structure
       • Application Programs
       • Logical File System
       • File-organization Module
       • Basic File System
       • IO Control
       • Devices
     • Allocation Methods
       • Contiguos Allocation
       • Linked Allocation
       • Indexed Allocation
       • Unix Method
   • Directory Implementation
     • GAINING CONSISTENCY
     • THE DISK CACHE MECHANISM

3. Attributes of a File

   • Name
   • Identifier
   • Type
   • Location
   • Size
   • Protection
   • Time, date and user identification

4. Information of a Directory

   • Name
   • Type
   • Location
   • Size
   • Position
   • Protection
   • Usage
   • Mounting

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