tailieunhanh - Lecture Operating system concepts (9th Ed) - Chapter 14: Protection

Lecture Operating system concepts (9th Ed) - Chapter 14 includes: Discuss the goals and principles of protection in a modern computer system, explain how protection domains combined with an access matrix are used to specify the resources a process may access, examine capability and language-based protection systems. | Chapter 14: Protection Operating System Concepts – 9th Edition Silberschatz, Galvin and Gagne ©2013 Chapter 14: Protection Goals of Protection Principles of Protection Domain of Protection Access Matrix Implementation of Access Matrix Access Control Revocation of Access Rights Capability-Based Systems Language-Based Protection Operating System Concepts – 9th Edition Silberschatz, Galvin and Gagne ©2013 Objectives Discuss the goals and principles of protection in a modern computer system Explain how protection domains combined with an access matrix are used to specify the resources a process may access Examine capability and language-based protection systems Operating System Concepts – 9th Edition Silberschatz, Galvin and Gagne ©2013 Goals of Protection In one protection model, computer consists of a collection of objects, hardware or software Each object has a unique name and can be accessed through a well-defined set of operations Protection problem - ensure that each object is accessed correctly and only by those processes that are allowed to do so Operating System Concepts – 9th Edition Silberschatz, Galvin and Gagne ©2013 Principles of Protection Guiding principle – principle of least privilege Programs, users and systems should be given just enough privileges to perform their tasks Limits damage if entity has a bug, gets abused Can be static (during life of system, during life of process) Or dynamic (changed by process as needed) – domain switching, privilege escalation “Need to know” a similar concept regarding access to data Operating System Concepts – 9th Edition Silberschatz, Galvin and Gagne .

• Hệ điều hành
• Operating system concepts
• Lecture Operating system concepts
• Operating system
• Principles of protection
• Domain of protection
• Access matrix
• Operating system services
• Operating system structures
• Operating system design
• Operating system structure
• Hệ điều hành
• Computer system organization
• Operating System Debugging
• Operating System Generation
• Types of System Calls
• Computer system structures
• File system interface
• File system implementation
• Computer system architecture
• The Linux system