File Systems

  1. File Concepts
    1. File Abstraction
      1. Definition of a File
        1. File as a Sequence of Bytes
          1. File as a Collection of Records
            1. Logical vs. Physical File Structure
            2. File Attributes and Metadata
              1. Basic Attributes
                1. Name
                  1. Identifier
                    1. Type
                      1. Location
                        1. Size
                        2. Protection and Permissions
                          1. Access Rights
                            1. Owner Information
                              1. Group Information
                              2. Timestamps
                                1. Creation Time
                                  1. Last Access Time
                                    1. Last Modification Time
                                      1. Status Change Time
                                      2. Extended Attributes
                                        1. Custom Metadata
                                          1. Application-Specific Attributes
                                        2. File Operations
                                          1. Basic Operations
                                            1. Create
                                              1. Open
                                                1. Read
                                                  1. Write
                                                    1. Close
                                                      1. Delete
                                                      2. Advanced Operations
                                                        1. Seek
                                                          1. Truncate
                                                            1. Append
                                                              1. Rename
                                                                1. Copy
                                                                  1. Move
                                                                  2. Atomic Operations
                                                                    1. Atomic File Creation
                                                                      1. Atomic File Replacement
                                                                    2. File Access Methods
                                                                      1. Sequential Access
                                                                        1. Characteristics
                                                                          1. Use Cases
                                                                            1. Performance Considerations
                                                                            2. Direct Access
                                                                              1. Random Access Characteristics
                                                                                1. Use Cases
                                                                                  1. Implementation Requirements
                                                                                  2. Indexed Access
                                                                                    1. Index Structure
                                                                                      1. Use Cases
                                                                                        1. Performance Trade-offs
                                                                                        2. Memory-Mapped Files
                                                                                          1. Virtual Memory Integration
                                                                                            1. Benefits and Limitations
                                                                                          2. File Types and Structure
                                                                                            1. Unstructured Files
                                                                                              1. Byte Sequence Files
                                                                                                1. Binary Files
                                                                                                  1. Text Files
                                                                                                  2. Structured Files
                                                                                                    1. Fixed-Length Records
                                                                                                      1. Variable-Length Records
                                                                                                        1. Tagged Records
                                                                                                        2. Special File Types
                                                                                                          1. Executable Files
                                                                                                            1. Device Files
                                                                                                              1. Named Pipes

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                                                                                                          2. File System Architecture

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                                                                                                          4. Directory Systems and Naming