Operating System Concepts - Chapter 15: Security pdf

... FirewallNetwork Security Through Domain Separation Via Firewall Chapter 15: Security Chapter 15: Security 15.16Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 10, 2005 System ... malicious misuse15.34Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 10, 2005ManMan - - inin - - thethe - - middle Attack on Asymmetric middle Attack on Asymmetric ... Gagne ©2005 Operating System Concepts – 7thEdition, Jan 10, 2005The Security ProblemThe Security Problem Security must consider external environment of the system, and protect the system resources...

Operating System Concepts - Chapter 7: Deadlocks pdf

... 2005ResourceResource - - Allocation Graph and WaitAllocation Graph and Wait - - for Graphfor GraphResource-Allocation Graph Corresponding wait-for graph Chapter 7: Deadlocks Chapter 7: Deadlocks ... ©2005 Operating System Concepts - 7thEdition, Feb 14, 2005Graph With A Cycle But No DeadlockGraph With A Cycle But No Deadlock7.20Silberschatz, Galvin and Gagne ©2005 Operating System Concepts ... resource type. Rj.7.6Silberschatz, Galvin and Gagne ©2005 Operating System Concepts - 7thEdition, Feb 14, 2005 System Model System Model Resource types R1, R2, . . ., RmCPU cycles,...

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Operating System Concepts - Chapter 14: Protection pdf

... ©2005 Operating System Concepts – 7thEdition, Apr 11, 2005CapabilityCapability - - Based Systems Based Systems  Hydraz Fixed set of access rights known to and interpreted by the system. z ... access Examine capability and language-based protection systemsEnd of Chapter 14End of Chapter 1414.6Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Apr 11, 2005Domain ... ©2005 Operating System Concepts – 7thEdition, Apr 11, 2005Modified Access Matrix of Figure BModified Access Matrix of Figure B14.9Silberschatz, Galvin and Gagne ©2005 Operating System Concepts...

Operating System Concepts - Chapter 5: CPU Scheduling pdf

... create(&tid[i],&attr,runner,NULL);5.29Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 2, 2005RealReal - - Time SchedulingTime Scheduling Hard real-time systems – required to complete a critical ... ©2005 Operating System Concepts – 7thEdition, Feb 2, 2005 Chapter 5: CPU Scheduling Chapter 5: CPU Scheduling Basic Concepts  Scheduling Criteria  Scheduling Algorithms Multiple-Processor ... queue Q2.5.12Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 2, 2005ShortestShortest - - JobJob - - First (SJF) SchedulingFirst (SJF) Scheduling Associate...

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Operating System Concepts - Appendix A: UnixBSD pdf

... Gagne ©2005 Operating System Concepts – 7thEdition, Feb 11, 2005FileFile - - System Control Blocks System Control BlocksA.7Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – ... Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 11, 2005 System Calls System Calls System calls define the programmer interface to UNIX  The set of systems programs commonly ... ©2005 Operating System Concepts – 7thEdition, Feb 11, 2005Typical UNIX Directory StructureTypical UNIX Directory StructureA.50Silberschatz, Galvin and Gagne ©2005 Operating System Concepts...

Operating System Concepts - Chapter 1: Introduction.Chapter 1: IntroductionWhat Operating Systems Do Computer-System pot

... Introduction Chapter 1: Introduction What Operating Systems Do Computer -System Organization Computer -System Architecture Operating- System Structure Operating- System Operations Process Management ... and Security  Distributed Systems Special-Purpose Systems Computing Environments1.34Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 12, 2005I/O SubsystemI/O ... must be managedz Varies between WORM (write-once, read-many-times) and RW (read-write)1.19Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 12, 2005Storage...

Operating System Concepts - Chapter 2: Operating-System Structures doc

... of Chapter 2End of Chapter 22.4Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 14, 2005 Operating System Services Operating System Services One set of operating- system ... execution2.8Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 14, 2005User Operating System Interface User Operating System Interface - - GUIGUI User-friendly desktop metaphor ... and Gagne ©2005 Operating System Concepts – 7thEdition, Jan 14, 2005Layered Operating System Layered Operating System 2.24Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition,...

Operating System Concepts - Chapter 3: Processes ppt

... and Gagne ©2005 Operating System Concepts - 7thEdition, Feb 7, 2006Process in MemoryProcess in Memory3.39Silberschatz, Galvin and Gagne ©2005 Operating System Concepts - 7thEdition, Feb ... item;}3.24Silberschatz, Galvin and Gagne ©2005 Operating System Concepts - 7thEdition, Feb 7, 2006ProducerProducer - - Consumer ProblemConsumer Problem Paradigm for cooperating processes, producer process ... Some operating system do not allow child to continue if its parent terminates– All children terminated - cascading termination3.3Silberschatz, Galvin and Gagne ©2005 Operating System Concepts...

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Operating System Concepts - Chapter 4: Threads pot

... and Gagne ©2005 Operating System Concepts – 7thedition, Jan 23, 2005ManyMany - - toto - - One ModelOne Model4.15Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thedition, ... 2005TwoTwo - - level Modellevel Model4.8Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thedition, Jan 23, 2005ManyMany - - toto - - OneOne Many user-level threads ... and Gagne ©2005 Operating System Concepts – 7thedition, Jan 23, 2005ManyMany - - toto - - Many ModelMany Model4.10Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thedition,...

Operating System Concepts - Chapter 6: Process Synchronization potx

... x.signal can be implemented as:if (x-count > 0) {next-count++;signal(x-sem);wait(next);next-count ;}6.8Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – 7thEdition, Feb 8, ... Gagne ©2005 Operating System Concepts – 7thEdition, Feb 8, 2005Schematic view of a MonitorSchematic view of a Monitor6.39Silberschatz, Galvin and Gagne ©2005 Operating System Concepts – ... have:semaphore x-sem; // (initially = 0)int x-count = 0; The operation x.wait can be implemented as:x-count++;if (next-count > 0)signal(next);elsesignal(mutex);wait(x-sem);x-count ;6.10Silberschatz,...

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