PPT Slide
Files and File Systems
- A file system provides a convenient way for users to manage their data.
- A file is a sequence of bytes of arbitrary length.
- Files are implemented by the operating system to provide persistent storage.
- A file system provides a way of storing, naming and protecting files.
- Accessing file data occurs through layers: File system interface (system calls), device driver interface and disk hardware interface (Figure 16.1).
- By tracing the file concept down the line you can see what each part manages (Figure 16.2).