TAILIEUCHUNG - Lecture Operating system concepts - Lecture 17

The various processes in an operating system must be protected from one another’s activities. For that purpose, various mechanisms exist that can be used to ensure that the files, memory segments, CPU, and other resources can be operated on by only those processes that have gained proper authorization from the operating system. In this chapter, we examine the problem of protection in great detail and develop a unifying model for implementing protection. | CSC 322 Operating Systems Concepts Lecture - 19: by Ahmed Mumtaz Mustehsan Special Thanks To: Tanenbaum, Modern Operating Systems 3 e, (c) 2008 Prentice-Hall, Inc. (Chapter-3) Silberschatz, Galvin and Gagne 2002, Operating System Concepts, Ahmed Mumtaz Mustehsan, CIIT, Islamabad 1 Chapter 4 File System Lecture-19 Ahmed Mumtaz Mustehsan, CIIT, Islamabad 2 Computers can store information on various storage media The operating system abstracts from the physical properties of its storage devices to define a logical storage unit called a file Files are mapped by the operating system onto non volatile physical devices A file is a named collection of related information that is recorded on secondary storage File Systems Introduction Lecture-19 Ahmed Mumtaz Mustehsan, CIIT, Islamabad 3 For a user’s perspective, a file is the smallest allotment of logical secondary storage (., data supposedly cannot be written to secondary storage unless written in a file) Files commonly represent .

• Hệ điều hành
• Operating system
• Operating system concept
• Memory management
• File systems
• Operating systems design
• Operating system structure
• Operating system concepts
• Lecture Operating system concepts
• Operating system services
• Operating system structures
• Operating system design
• Hệ điều hành
• Computer system organization
• Operating System Debugging
• Operating System Generation
• Types of System Calls
• Lecture Operating system principles
• Computer system
• Modern operating systems
• Evolution of operating systems
• Computer system structures
• File system interface
• File system implementation
• Computer system architecture
• The Linux system